Patent Publication Number: US-2023156993-A1

Title: Component supply device

Description:
BACKGROUND 
     1. Technical Field 
     The present disclosure relates to a component supply device that conveys a component supply tape storing a component and supplies the component to a component supply position. 
     2. Description of the Related Art 
     Conventionally, a component mounting device that mounts a component on a substrate is known. As a component supply device that supplies a component to a component mounting device, often used is a tape feeder using a carrier tape (component supply tape) formed by sticking a cover tape to a base tape that stores a component. A tape feeder includes, on a frame having a conveyance path for a carrier tape, a sprocket that conveys the carrier tape on the conveyance path, and a peeling part that peels off a cover tape from a base tape of the carrier tape conveyed by the sprocket. 
     Among such component supply devices, from a viewpoint of reduction in the number of components, and the like, there is known, as a configuration for driving a certain gear, a configuration in which the target gear is driven using a sprocket for conveying a carrier tape instead of a gear (e.g., PTL 1 below). In this case, a disk-shaped member is provided concentrically with the target gear to be driven, and a pin of a rotating sprocket is brought into contact with a recess provided in an outer peripheral portion of the disk-shaped member to transmit rotation of the sprocket to the target gear. 
     CITATION LIST 
     Patent Literature 
     PTL 1: Unexamined Japanese Patent Publication No. 2021-125625 
     SUMMARY 
     However, since a pin of a sprocket conventionally has a conical shape due to processability and ease of releasing of a carrier tape from a feed hole, when the pin of the sprocket contacts a recess of a disk-shaped member, the pin comes into point contact with an inner surface of the recess (i.e., locally abuts) to cause wear, which might cause deterioration in durability of the pin. 
     Therefore, an object of the present disclosure is to provide a component supply device enabling reduction in wear of a pin of a sprocket that transmits rotation to a wheel. 
     A component supply device of the present disclosure is a component supply device that supplies a component to a component supply position using a component supply tape including a base tape and a cover tape, the base tape having a storage part storing the component, and the cover tape being attached to the base tape to cover the storage part, the component supply device including: a frame including a conveyance path for the component supply tape; a sprocket that is provided in the frame, includes a pin, and rotates with the pin engaged with a feed hole of the component supply tape on the conveyance path to convey the component supply tape; and a disk-shaped member that rotates in accordance with rotation of the sprocket when the pin of the rotating sprocket comes into contact with a recess provided on an outer periphery of the disk-shaped member. 
     According to the present disclosure, it is possible to reduce wear of a pin of a sprocket that transmits rotation to a wheel. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG.  1    is a side view illustrating a schematic configuration of a component mounting device including a tape feeder according to one exemplary embodiment of the present disclosure; 
         FIG.  2    is a perspective view illustrating a carrier tape used in the tape feeder according to the exemplary embodiment of the present disclosure together with a reel; 
         FIG.  3    is a perspective view of a part of the carrier tape used in the tape feeder according to the exemplary embodiment of the present disclosure; 
         FIG.  4    is a side view of the tape feeder according to the exemplary embodiment of the present disclosure; 
         FIG.  5    is a side view of a part of the tape feeder according to the exemplary embodiment of the present disclosure; 
         FIG.  6    is a side view of a part of the tape feeder according to the exemplary embodiment of the present disclosure; 
         FIG.  7    is a side view of a part of the tape feeder according to the exemplary embodiment of the present disclosure; 
         FIG.  8    is a perspective view of a part of the tape feeder according to the exemplary embodiment of the present disclosure; 
       Part (a) of  FIG.  9    is a plan view of a part of the tape feeder according to the exemplary embodiment of the present disclosure, and part (b) of  FIG.  9    is a side view of a part of the tape feeder according to the exemplary embodiment of the present disclosure; 
         FIG.  10 A  is a side view of a neighborhood of a portion where an outer peripheral pin of an introduction sprocket included in the tape feeder and a recess of a wheel contact each other in the exemplary embodiment of the present disclosure; 
         FIG.  10 B  is a partial cross-sectional perspective view of a neighborhood of a portion where an outer peripheral pin of an introduction sprocket included in the tape feeder and a recess of a wheel contact each other in the exemplary embodiment of the present disclosure; 
         FIG.  11    is a cross-sectional perspective view of the neighborhood of the portion where the outer peripheral pin of the introduction sprocket included in the tape feeder and the recess of the wheel contact each other in the exemplary embodiment of the present disclosure; 
         FIG.  12 A ,  FIG.  12 B , and  FIG.  12 C  are side views of the neighborhood of the portion where the outer peripheral pin of the introduction sprocket included in the tape feeder and the recess of the wheel contact each other in the exemplary embodiment of the present disclosure; 
         FIG.  13    is a cross-sectional perspective view of a part of the tape feeder according to the exemplary embodiment of the present disclosure; 
         FIG.  14 A  and  FIG.  14 B  are perspective views each illustrating a second guide member included in the tape feeder according to the exemplary embodiment of the present disclosure together with a peeling gear; 
         FIG.  15    is a cross-sectional side view of a part of the tape feeder according to the exemplary embodiment of the present disclosure; 
         FIG.  16 A  and  FIG.  16 B  are views each for explaining a procedure for conveying the carrier tape by the tape feeder according to the exemplary embodiment of the present disclosure; 
         FIG.  17 A  and  FIG.  17 B  are views each for explaining a procedure for conveying the carrier tape by the tape feeder according to the exemplary embodiment of the present disclosure; 
         FIG.  18 A  and  FIG.  18 B  are views each for explaining a procedure for conveying the carrier tape by the tape feeder according to the exemplary embodiment of the present disclosure; and 
         FIG.  19 A  and  FIG.  19 B  are views each for explaining a procedure for conveying the carrier tape by the tape feeder according to the exemplary embodiment of the present disclosure. 
     
    
    
     DETAILED DESCRIPTIONS 
     In the following, an exemplary embodiment of the present disclosure will be described with reference to the drawings.  FIG.  1    shows component mounting device  1  according to the exemplary embodiment of the present disclosure. Component mounting device  1  is a device that repeatedly executes component mounting work of horizontally conveying substrate KB fed from an upstream process side, positioning substrate KB at a work position, mounting component BH on substrate KB, and carrying component BH out to a downstream process side. 
     In  FIG.  1   , component mounting device  1  includes base  11 , substrate conveyance unit  12 , tape feeder  13 , mounting head  14 , and head moving mechanism  15 . In the present exemplary embodiment, for convenience of description, a direction in which substrate KB is conveyed is defined as X direction (a left-right direction as viewed from operator OP), and a horizontal direction orthogonal to X direction is defined as Y direction (a front-rear direction as viewed from operator OP). An up-down direction is defined as Z direction. 
     In  FIG.  1   , substrate conveyance unit  12  includes a pair of belt conveyors  12   a  extending on base  11  in X direction. Substrate conveyance unit  12  conveys substrate KB in X direction and positions substrate KB at the work position by simultaneously causing the pair of belt conveyors  12   a  to work. Feeder carriage FD is coupled to base  11 , and tape feeder  13  is detachably attached to feeder base FB provided at an upper portion of feeder carriage FD. A plurality of tape feeders  13  can be attached to feeder base FB side by side in X direction. 
     Tape feeder  13  is a component supply unit (component supply device) in component mounting device  1 , and conveys carrier tape CT as a component supply tape storing component BH to supply component BH to component supply position  13 P ( FIG.  1   ). As illustrated in  FIG.  2    and  FIG.  3    ( FIG.  3    shows region AE 1  in  FIG.  2   ), carrier tape CT is configured to include base tape BT and cover tape TT stuck to an upper surface of base tape BT. Carrier tape CT is supplied while being wound around reel RL ( FIG.  2   ). 
     Base tape BT has a plurality of pockets PK arranged in a line in a longitudinal direction. Each pocket PK stores component BH. Cover tape TT prevents component BH from falling off from each pocket PK in a state of being stuck to base tape BT. Base tape BT has formed a plurality of feed holes KH that are arranged in a line in a longitudinal direction of carrier tape CT in parallel with a row of pockets PK ( FIG.  3   ). 
     As described above, in the present exemplary embodiment, carrier tape CT is configured to have base tape BT having pocket PK as a storage part in which component BH is stored, and cover tape TT stuck to base tape BT to cover pocket PK. 
     In  FIG.  1   , mounting head  14  includes a plurality of nozzles  14 N extending downward. Head moving mechanism  15  includes, for example, an XY robot, and moves mounting head  14  in a horizontal plane. Mounting head  14  sucks component BH to a lower end of nozzle  14 N to pick up the component, the component having been supplied to component supply position  13 P by tape feeder  13 . Thus, in the present exemplary embodiment, tape feeder  13  is configured to supply component BH to component mounting device  1  using carrier tape CT as the component supply tape. 
     In  FIG.  1   , component mounting device  1  includes control device  16 . Control device  16  controls each operation of substrate conveyance unit  12 , each tape feeder  13 , mounting head  14 , and head moving mechanism  15 . Manipulation panel PN is connected to control device  16 . Operator OP can perform input operation to control device  16  through manipulation panel PN. 
     When component mounting device  1  performs the component mounting work, control device  16  first causes substrate conveyance unit  12  to work, thereby receiving substrate KB fed from the upstream process side and conveying substrate KB to the work position to position the substrate. Then, after substrate KB is positioned, the control device causes head moving mechanism  15  to work, thereby causing mounting head  14  to repeatedly perform component moving operation while causing tape feeder  13  to work to supply component BH to component supply position  13 P. The component moving operation includes operation of causing nozzle  14 N to suck component BH supplied by tape feeder  13 , and operation of mounting component BH sucked by nozzle  14 N onto substrate KB. 
     After causing mounting head  14  to repeatedly perform the component moving operation to mount all components BH to be mounted on substrate KB, control device  16  causes substrate conveyance unit  12  to work to carry out substrate KB to the downstream process side. As a result, the component mounting work per one substrate KB is completed. 
     Next, a configuration and operation of tape feeder  13  will be described. As illustrated in  FIG.  4   , tape feeder  13  includes frame  21 , tape draw-in mechanism  22 , conveyance mechanism  23 , cover member  24 , cover tape peeling mechanism  25 , manipulation and display part  26 , and controller  27 . 
     Frame  21  of tape feeder  13  is attached to feeder base FB of feeder carriage FD. In a state where tape feeder  13  (frame  21 ) is attached to feeder base FB, a width direction of frame  21  coincides with X direction, and the front-rear direction coincides with Y direction. Of ends of frame  21  in Y direction, a side close to substrate conveyance unit  12  is referred to as a front end side, and a side away from substrate conveyance unit  12  is referred to as a rear end side. 
     In  FIG.  4   , conveyance path  21 L of carrier tape CT extending from the rear end side to the front end side of frame  21  is provided in frame  21 . Conveyance path  21 L has tape inlet  21 K (an introduction position of carrier tape CT) opened at the rear end of frame  21 , and tape outlet  21 T opened at the front end side of frame  21 . 
     Carrier tape CT is inserted from tape inlet  21 K and conveyed so as to be ejected from tape outlet  21 T. Hereinafter, a side of frame  21  on which tape inlet  21 K is provided is referred to as an “upstream side”, and a side on which tape outlet  21 T is provided is referred to as “downstream side”. 
     In  FIG.  4   , conveyance path  21 L is formed as a whole in a route extending from an upstream side lower portion toward a downstream side upper portion in frame  21 . Specifically, conveyance path  21 L is formed in a route extending substantially along Y direction from tape inlet  21 K toward the downstream side, extending obliquely upward from an intermediate portion of frame  21  toward the downstream side, and then extending further toward the downstream side in a state of being exposed at an upper portion of frame  21  to reach tape outlet  21 T. 
     In  FIG.  4   , a hollow region is formed on the upstream side of frame  21 . As will be described later, the hollow region is a housing part  21 S in which cover tape TT peeled off from base tape BT is housed. 
     In  FIG.  4   , a coupling part  21 R having a shape extending in Y direction is provided in a downstream side lower portion of frame  21 . Tape feeder  13  is coupled to feeder base FB (i.e., to feeder carriage FD) by insertion of coupling part  21 R into a slot (not illustrated) provided in feeder base FB. 
     In  FIG.  4   , tape draw-in mechanism  22  includes insertion detector  22   a , draw-in sprocket  22   b , and draw-in motor  22   c . Insertion detector  22   a  is provided at the upstream side lower portion of frame  21 , and detects a head portion of carrier tape CT inserted into conveyance path  21 L from tape inlet  21 K. 
     Draw-in sprocket  22   b , which is also located at the upstream side lower portion of frame  21 , is rotatably provided around a shaft along X direction (i.e., in a direction along YZ plane). Draw-in sprocket  22   b  has a plurality of pins (not illustrated) on an outer peripheral portion thereof, and a lowermost pin among the plurality of pins is located in conveyance path  21 L. 
     When insertion detector  22   a  detects the head portion of carrier tape CT being inserted into tape inlet  21 K, draw-in motor  22   c  rotates draw-in sprocket  22   b . At this time, draw-in sprocket  22   b  is rotated in a direction (arrow Ra in  FIG.  4   ) in which a pin on a lower end side moves toward the downstream side. 
     When draw-in sprocket  22   b  rotates in the direction in which the pin on the lower end side moves toward the downstream side, the lowermost pin of draw-in sprocket  22   b  is engaged with feed hole KH of carrier tape CT in conveyance path  21 L, and carrier tape CT is conveyed in a downstream direction (a direction toward the downstream side, i.e., a direction from a left side toward a right side of a sheet of  FIG.  4   ). As a result, carrier tape CT is drawn into frame  21 , and the head portion of carrier tape CT advances on conveyance path  21 L toward the downstream side. 
     In  FIG.  4   , conveyance mechanism  23  is provided on the downstream side of frame  21 . Conveyance mechanism  23  is a mechanism part that receives carrier tape CT drawn into conveyance path  21 L by tape draw-in mechanism  22  and conveys carrier tape CT toward component supply position  13 P. As described above, in the present exemplary embodiment, tape feeder  13  is configured to include conveyance path  21 L leading from tape inlet  21 K, which is an introduction position of carrier tape CT, to component supply position  13 P, and conveyance mechanism  23  that conveys carrier tape CT on conveyance path  21 L to component supply position  13 P. 
     In  FIG.  5    ( FIG.  5    is an enlarged view of region AE 2  in  FIG.  4   ), conveyance mechanism  23  includes drive motor  31 , drive gear  32 , reduction gear  33 , first intermediate gear  34 , introduction sprocket  35 , positioning sprocket  36 , second intermediate gear  37 , and ejection sprocket  38 . Drive motor  31  is installed at the downstream side lower portion of frame  21 , and rotates drive gear  32  around a shaft along X direction. Drive motor  31  is capable of rotating drive gear  32  in either of forward and reverse directions. 
     Reduction gear  33  and first intermediate gear  34  are each rotatably provided around a shaft along X direction. Reduction gear  33  meshes with drive gear  32  ( FIG.  5   ). Reduction gear  33  is formed integrally with small-diameter gear  33 T provided concentrically with the reduction gear, and small-diameter gear  33 T meshes with first intermediate gear  34  ( FIG.  5   ). Reduction gear  33  decelerates rotation of drive motor  31 , increases a torque generated by drive motor  31 , and transmits the increased torque to first intermediate gear  34 . 
     In  FIG.  5   , introduction sprocket  35  is located above an upstream side of first intermediate gear  34  and below an obliquely upward extending part of an intermediate portion of conveyance path  21 L. Introduction sprocket  35  is rotatable around a shaft along 
     X direction, and of a plurality of pins provided on an outer periphery thereof (referred to as “outer peripheral pins  35 T”), a pin located slightly upstream side of an uppermost pin is located in conveyance path  21 L ( FIG.  5   ). 
     Introduction sprocket  35  is configured integrally with introduction sprocket drive gear  35 G provided concentrically with the introduction sprocket. Introduction sprocket drive gear  35 G meshes with first intermediate gear  34  ( FIG.  5   ). Therefore, when first intermediate gear  34  rotates, introduction sprocket  35  rotates via introduction sprocket drive gear  35 G. 
     In  FIG.  5   , positioning sprocket  36  is provided slightly downstream above first intermediate gear  34  (above a downstream side of introduction sprocket  35 ) and below conveyance path  21 L. Positioning sprocket  36  is rotatable around a shaft along X direction, and an uppermost pin among a plurality of pins provided on an outer periphery of the positioning sprocket is located in conveyance path  21 L ( FIG.  5   ). 
     Positioning sprocket  36  is configured integrally with positioning sprocket drive gear  36 G provided concentrically with the positioning sprocket. Positioning sprocket  36  meshes with first intermediate gear  34  ( FIG.  5   ), and when first intermediate gear  34  rotates, positioning sprocket rotates in the same direction as introduction sprocket  35  via positioning sprocket drive gear  36 G. 
     In  FIG.  5   , second intermediate gear  37  is located below a downstream side of positioning sprocket  36 . Second intermediate gear  37  is rotatable around a shaft along X direction and meshes with positioning sprocket drive gear  36 G. 
     In  FIG.  5   , ejection sprocket  38  is provided on the downstream side of positioning sprocket  36  and below conveyance path  21 L (above second intermediate gear  37 ). Ejection sprocket  38  is rotatable around a shaft along X direction, and an uppermost pin among a plurality of pins provided on an outer periphery of the ejection sprocket is located in conveyance path  21 L. 
     Ejection sprocket  38  is configured integrally with ejection sprocket drive gear  38 G provided concentrically the with the ejection sprocket. Ejection sprocket  38  meshes with second intermediate gear  37  ( FIG.  5   ), and when second intermediate gear  37  rotates, ejection sprocket  38  rotates in the same direction as positioning sprocket  36  (and introduction sprocket  35 ) via ejection sprocket drive gear  38 G. 
     As described above, in tape feeder  13  according to the present exemplary embodiment, introduction sprocket  35 , positioning sprocket  36 , and ejection sprocket  38  are configured to rotate in the same direction upon reception of a driving force of drive motor  31 . 
     As described above, some of the pins provided on the outer periphery of each of the three sprockets (introduction sprocket  35 , positioning sprocket  36 , and ejection sprocket  38 ) constituting conveyance mechanism  23  are located in conveyance path  21 L. Each of introduction sprocket  35 , positioning sprocket  36 , and ejection sprocket  38  rotates with a pin engaged with feed hole KH of carrier tape CT on conveyance path  21 L, thereby conveying carrier tape CT. 
     Introduction sprocket  35  rotates in a direction in which outer peripheral pin  35 T on an upper end side is moved to the downstream side (arrow R 1  illustrated in  FIG.  5   ), thereby conveying carrier tape CT on conveyance path  21 L in the downstream direction. 
     The rotation direction of introduction sprocket  35  is hereinafter referred to as “tape advancing direction”. Positioning sprocket  36  and ejection sprocket  38  also rotate in a direction in which the pins on the upper end side are moved to the downstream side in this manner, thereby conveying carrier tape CT in the downstream direction. 
     Introduction sprocket  35  receives carrier tape CT fed from draw-in sprocket  22   b  and conveys the fed carrier tape CT in the downstream direction. Positioning sprocket  36  conveys carrier tape CT received from introduction sprocket  35  in the downstream direction, and ejection sprocket  38  conveys carrier tape CT received from positioning sprocket  36  in the downstream direction, and ejects carrier tape CT from tape outlet  21 T of frame  21 . 
     Introduction sprocket  35  also rotates in a direction in which outer peripheral pin  35 T on the upper end side is moved to the upstream side (a direction opposite to arrow R 1  illustrated in  FIG.  5   ), thereby conveying carrier tape CT on conveyance path  21 L in the upstream direction (a direction toward the upstream side, i.e., a direction from the right side toward the left side of the sheet of  FIG.  4   ). A rotation direction of introduction sprocket  35  that conveys carrier tape CT in the upstream direction in a manner as described above is hereinafter referred to as “tape retracting direction”. Note that the rotation of introduction sprocket  35  in the tape retracting direction is performed with an extremely small rotation amount in a situation where the head portion of carrier tape CT is not delivered from introduction sprocket  35  to positioning sprocket  36  (to be described later). 
     In  FIG.  5   , cover member  24  is provided to extend in Y direction above conveyance mechanism  23 . Cover member  24  covers a downstream side upper portion of frame  21  from above, and has a function of pressing, from above, carrier tape CT conveyed on conveyance path  21 L by the three sprockets (introduction sprocket  35 , positioning sprocket  36 , and ejection sprocket  38 ) constituting conveyance mechanism  23 . 
     In  FIG.  5    and  FIG.  6    ( FIG.  6    is an enlarged view of region AE 3  in  FIG.  5   ), opening  24 K opened upward is provided in an intermediate portion of cover member  24  in Y direction. Component supply position  13 P is set in opening  24 K. 
     In  FIG.  6   ,  FIG.  7   ,  FIG.  8   , and part (a) and part (b) of  FIG.  9   , cover tape peeling mechanism  25  includes wheel  40 , three transmission gears, and three peeling gears. The three transmission gears include first transmission gear  41   a , second transmission gear  41   b , and third transmission gear  41   c , each of which is rotatable around a shaft along the X direction. The three peeling gears include first peeling gear  51 , second peeling gear  52 , and third peeling gear  53 , each of which is rotatable around a shaft along the X direction. 
     In  FIG.  7   ,  FIG.  8   , and part (b) of  FIG.  9   , wheel  40  is provided at a position opposed to introduction sprocket  35  across conveyance path  21 L (above conveyance path  21 L). Wheel  40  is made of a member having a disk-shape (disk-shaped member) expanding along YZ plane, and is provided rotatably around a shaft along X direction. 
     A plurality of recesses  40 B are provided on an outer periphery of wheel  40  ( FIG.  8   , and  FIG.  10 A  and  FIG.  10 B ). Recesses  40 B are arranged at a pitch corresponding to a pitch of outer peripheral pins  35 T of introduction sprocket  35 . In a state where introduction sprocket  35  is rotating, outer peripheral pin  35 T is inserted into recess  40 B of wheel  40  from below to bring outer peripheral pin  35 T into contact with an inner surface of recess  40 B ( FIG.  10 A  and  FIG.  10 B , and  FIG.  11    which is a cross-sectional view taken along line V-V in  FIG.  10 A ), thereby rotating wheel  40 . At this time, a rotation direction of wheel  40  is a direction opposite to that of introduction sprocket  35  (arrow R 2  illustrated in  FIG.  7   ). 
     As described above, in the present exemplary embodiment, wheel  40  that is a disk-shaped member is rotatably provided, and is configured to rotate in accordance with the rotation of introduction sprocket  35  as a result of bringing outer peripheral pin  35 T ( FIG.  10 A  and  FIG.  10 B , and  FIG.  11   ) of rotating introduction sprocket  35  into contact with recesses  40 B provided on the outer periphery of the introduction sprocket. Since introduction sprocket  35  and wheel  40  that generates a rotation force for causing cover tape peeling mechanism  25  to work are provided with conveyance path  21 L provided therebetween, outer peripheral pin  35 T of introduction sprocket  35  penetrates through feed hole KH of carrier tape CT to come into contact with recess  40 B of wheel  40 , thereby transmitting rotation force. Such an arrangement eliminates a need of a motor for causing cover tape peeling mechanism  25  to work, thereby enabling downsizing and cost saving of tape feeder  13 . 
     In  FIG.  10 A , outer peripheral pin  35 T of introduction sprocket  35  engaged with feed hole KH of carrier tape CT on conveyance path  21 L passes through feed hole KH from below. Therefore, even in a state of being engaged with feed hole KH of carrier tape CT, outer peripheral pin  35 T can enter recess  40 B of wheel  40 , and introduction sprocket  35  can rotate wheel  40  while conveying carrier tape CT on conveyance path  21 L ( FIG.  10 A  and  FIG.  10 B ). 
     As illustrated in  FIG.  10 B , in an inclined surface portion of a surface of outer peripheral pin  35 T of introduction sprocket  35 , a portion (referred to as “contact surface  35 H”) in contact with an inner surface of recess  40 B of wheel  40  is a flat surface. In addition, of the inner surface of recess  40 B of wheel  40 , a portion (referred to as “contacted surface  40 H”) with which contact surface  35 H of introduction sprocket  35  contact is also formed of a flat surface. As described above, since contact surface  35 H contacting recess  40 B of outer peripheral pin  35 T and contacted surface  40 H with which outer peripheral pin  35 T contacts out of the inner surface of recess  40 B are both formed of flat surfaces, contact surface  35 H and contacted surface  40 H come into line contact with each other ( FIG.  10 B ). 
     When outer peripheral pin  35 T of introduction sprocket  35  contacts the inner surface of recess  40 B, first, a distal end side of contact surface  35 H of outer peripheral pin  35 T comes into contact with contacted surface  40 H (see contact portion TB in  FIG.  12 A ). With progress of rotation of introduction sprocket  35 , outer peripheral pin  35 T and recess  40 B come relatively close to each other, so that contact portion TB between outer peripheral pin  35 T and the inner surface of recess  40 B moves from a distal end portion of outer peripheral pin  35 T to a base side (an inlet side of recess  40 B) ( FIG.  12 A → FIG.  12 B ). As introduction sprocket  35  further rotates, outer peripheral pin  35 T and recess  40 B are relatively separated from each other, so that contact portion TB moves to the distal end side of outer peripheral pin  35 T again ( FIG.  12 B → FIG.  12 C ). 
     In the present exemplary embodiment, since a portion (contact surface  35 H) of outer peripheral pin  35 T contacting recess  40 B and a portion (contacted surface  40 H) of the inner surface of recess  40 B contacting outer peripheral pin  35 T are both flat surfaces, even when contact portion TB moves ( FIG.  12 A → FIG.  12 B → FIG.  12 C ), contact surface  35 H of outer peripheral pin  35 T and contacted surface  40 H of recess  40 B maintain the state of being in line contact. 
     Here, in a case where outer peripheral pin  35 T of introduction sprocket  35  has a conventional conical shape, and the inclined surface portion contacting the inner surface of recess  40 B is a curved surface, even when the inner surface of recess  40 B is a flat surface, outer peripheral pin  35 T comes into point contact with the inner surface of recess  40 B. In the present exemplary embodiment, as described above, outer peripheral pin  35 T and the inner surface of recess  40 B are not in point contact but in line contact, and outer peripheral pin  35 T does not locally contact the inner surface of recess  40 B. Therefore, wear of outer peripheral pin  35 T can be reduced, and durability of not only introduction sprocket  35  but also wheel  40  can be improved. 
     In  FIG.  7    and  FIG.  8   , and part (a) and part (b) of  FIG.  9   , first transmission gear  41   a  is provided concentrically with wheel  40 . A slip clutch (not illustrated) is interposed between first transmission gear  41   a  and wheel  40 . While transmitting a torque from wheel  40  side to first transmission gear  41   a , the slip clutch does not transmit a torque from first transmission gear  41   a  side to wheel  40 . Therefore, when wheel  40  is driven by introduction sprocket  35 , first transmission gear  41   a  rotates. However, even when first transmission gear  41   a  is driven by an external force (driven by manual manipulation of third peeling gear  53  to be described later), wheel  40  does not rotate. 
     In  FIG.  7    and  FIG.  8   , and part (a) and part (b) of  FIG.  9   , second transmission gear  41   b  meshes with first transmission gear  41   a  on a downstream side of first transmission gear  41   a , and third transmission gear  41   c  meshes with second transmission gear  41   b  on a downstream side of second transmission gear  41   b . Therefore, when first transmission gear  41   a  rotates, second transmission gear  41   b  rotates in a direction opposite to the rotation direction of first transmission gear  41   a , and third transmission gear  41   c  rotates in a direction opposite to the rotation direction of second transmission gear  41   b  (the same rotation direction as that of first transmission gear  41   a ). 
     In  FIG.  8   , part (a) and part (b) of  FIG.  9   , and  FIG.  13   , first peeling gear  51  is attached to third transmission gear shaft  42  which is a rotation shaft of third transmission gear  41   c . Therefore, first peeling gear  51  rotates integrally with third transmission gear  41   c  around an axis of third transmission gear shaft  42 . 
     In part (a) and part (b) of  FIG.  9   , and  FIG.  13   , two first peeling gears  51  are provided side by side in the direction (X direction) of third transmission gear shaft  42 . These two first peeling gears  51  are integrally formed. Two second peeling gears  52  are located on a downstream side of first peeling gear  51 , and provided side by side in X direction. Two third peeling gears  53  are provided side by side in X direction on third peeling gear shaft  53 J located above first peeling gear  51  (part (a) and part (b) of  FIG.  9   ). 
     In  FIG.  7   ,  FIG.  8   , and part (a) and part (b) of  FIG.  9   , one of two second peeling gears  52  meshes with one of two first peeling gears  51 , and the other of two second peeling gears  52  meshes with the other of two first peeling gears  51 . One of two third peeling gears  53  meshes with one of two first peeling gears  51 , and the other of two third peeling gears  53  meshes with the other of two first peeling gears  51 . When third transmission gear  41   c  rotates, first peeling gear  51  rotates in the same direction as that of third transmission gear  41   c , and second peeling gear  52  and third peeling gear  53  rotate in a direction opposite to the rotation direction of first peeling gear  51 . 
     In  FIG.  7   ,  FIG.  8   , and part (a) and part (b) of  FIG.  9   , cover tape peeling mechanism  25  further includes first guide member  61  and second guide member  62 . As illustrated in  FIG.  14 A  and  FIG.  14 B , first guide member  61  is made of a plate-shaped member along YZ plane, and is provided between two second peeling gears  52  arranged in X direction. An end surface located on an upstream side of first guide member  61  is guide part  61 M formed of a curved guide surface. Guide part  61 M is located on a downstream side of an outer peripheral surface of first peeling gear  51 , and has a shape recessed toward the downstream side along an outer peripheral shape of first peeling gear  51  (part (b) of  FIG.  9   ). 
     In  FIG.  7   ,  FIG.  8   , part (a) and part (b) of  FIG.  9   ,  FIG.  14 A  and  FIG.  14 B , second guide member  62  has a shape like a table fork of three teeth as a whole, and includes a base part  62 P corresponding to a part of the three teeth and main body part  62 Q corresponding to a part of a handle. Second guide member  62  is installed in housing part  21 S in an attitude in which base part  62 P is directed to the downstream side and main body part  62 Q is extended to the upstream side. 
     Base part  62 P includes first locking part  62   a  corresponding to a center tooth of the three teeth of the table fork, and two second locking parts  62   b  corresponding to two teeth on both sides of the three teeth. First locking part  62   a  is positioned between two first peeling gears  51 . Two second locking parts  62   b  are respectively located on both outer sides of two first peeling gears  51 , and are engaged with third transmission gear shaft  42  from above (part (a) and part (b) of  FIG.  9   , and  FIG.  14 A ). 
     When introduction sprocket  35  rotates in the tape advancing direction (arrow R 1  illustrated in  FIG.  5    and  FIG.  7   ), wheel  40  rotated by introduction sprocket  35  rotates in a direction of moving recess  40 B on a lower end side to the downstream side, and accordingly, first transmission gear  41   a  also rotates in a direction of moving lower end side teeth to the downstream side (arrow R 2  illustrated in  FIG.  7    and part (b) of  FIG.  9   ). Then, by the rotation of first transmission gear  41   a , second transmission gear  41   b  rotates in a direction of moving upper end side teeth to the downstream side, and third transmission gear  41   c  rotates in a direction of moving lower end side teeth to the downstream side (the same direction as that of first transmission gear  41   a ). 
     When third transmission gear  41   c  rotates in the direction of moving the lower end side teeth to the downstream side, first peeling gear  51  rotates integrally with third transmission gear  41   c  in a direction of moving lower end side teeth to the downstream side (arrow Rn illustrated in part (b) of  FIG.  9   ). When first peeling gear  51  rotates in the direction of moving the lower end side teeth to the downstream side, second peeling gear  52  and third peeling gear  53  meshing with first peeling gear  51  rotate in a direction of moving upper end side teeth to the downstream side. Thus, the rotation directions of the three transmission gears (first transmission gear  41   a , second transmission gear  41   b , and third transmission gear  41   c ) and the three peeling gears (first peeling gear  51 , second peeling gear  52 , and third peeling gear  53 ) when introduction sprocket  35  rotates in the tape advancing direction as described above are hereinafter referred to as “feeding direction”. 
     On the other hand, when tape feeder  13  starts conveying new carrier tape CT, introduction sprocket  35  may rotate in the tape retracting direction in order that first peeling gear  51  and second peeling gear  52  catch cover tape TT from new carrier tape CT. Wheel  40  rotated by introduction sprocket  35  rotates in a direction of moving recess  40 B on the lower end side to the upstream side, and accordingly, first transmission gear  41   a  also rotates in a direction of moving the lower end side teeth to the upstream side (a direction opposite to arrow R 2  illustrated in  FIG.  7    and part (b) of  FIG.  9   ). Then, by the rotation of first transmission gear  41   a , second transmission gear  41   b  rotates in a direction of moving the lower end side teeth to the downstream side, and third transmission gear  41   c  rotates in a direction of moving upper end side teeth to the downstream side (the same rotation direction as first transmission gear  41   a ). 
     When third transmission gear  41   c  rotates in the direction of moving the upper end side teeth to the downstream side, first peeling gear  51  rotates integrally with third transmission gear  41   c  in a direction of moving upper end side teeth to the downstream side (direction opposite to arrow Rn illustrated in part (b) of  FIG.  9   ). When first peeling gear  51  rotates in the direction of moving the upper end side teeth to the downstream side, second peeling gear  52  and third peeling gear  53  both meshing with first peeling gear  51  rotate in a direction of moving lower end side teeth to the downstream side. Thus, the rotation directions of the three transmission gears (first transmission gear  41   a , second transmission gear  41   b , and third transmission gear  41   c ) and the three peeling gears (first peeling gear  51 , second peeling gear  52 , and third peeling gear  53 ) when introduction sprocket  35  rotates in the tape retracting direction as described above are hereinafter referred to as “reverse direction”. 
     In  FIG.  6   ,  FIG.  7   , and part (b) of  FIG.  9   , an upper end portion of third peeling gear  53  protrudes upward from cover member  24 . Operator OP can manipulate a portion of third peeling gear  53  protruding upward from cover member  24  toward the downstream side (i.e., in the feeding direction), so that third peeling gear  53  and first peeling gear  51  meshed with third peeling gear  53  can be rotated in the feeding direction. 
     In  FIG.  6   ,  FIG.  7   , part (b) of  FIG.  9   , and  FIG.  15   , tape pressing member  64  extending in Y direction is provided at a position below cover member  24  in frame  21 . Tape pressing member  64  is arranged above conveyance path  21 L with a predetermined interval from conveyance path  21 L. An upstream side end portion of tape pressing member  64  is located on an upstream side of first peeling gear  51  ( FIG.  15   ). 
     In part (b) of  FIG.  9    and  FIG.  15   , through hole  64 H penetrating tape pressing member  64  in a thickness direction is provided at a position near the upstream side end portion of tape pressing member  64 . Through hole  64 H is located substantially below a contact portion (meshing portion) between first peeling gear  51  and second peeling gear  52 . Carrier tape CT conveyed on conveyance path  21 L in the downstream direction by introduction sprocket  35  passes under tape pressing member  64  from the upstream side end portion of tape pressing member  64  and reaches positioning sprocket  36 . 
     In  FIG.  15   , air blow-out port  71  opened upward toward conveyance path  21 L is provided at a position below through hole  64 H provided in tape pressing member  64 . Air blow-out part  73  is connected to air blow-out port  71  via air path  72  formed in frame  21 . Air blow-out part  73  has a function of blowing out air from air blow-out port  71  into conveyance path  21 L from below through air path  72 . 
     In  FIG.  15   , manipulation piece path  81  opened to conveyance path  21 L from below is provided at a position on a downstream side of air blow-out port  71  in frame  21 . Manipulation piece path  81  is located below through hole  64 H of tape pressing member  64 . Manipulation piece  82  is housed in manipulation piece path  81 , and is movable in the up-down direction in manipulation piece path  81 . Manipulation piece  82  is movable between a “protruding position” where an upper end thereof protrudes into conveyance path  21 L and a “non-protruding position” where the upper end thereof does not protrude into conveyance path  21 L (housed in manipulation piece path  81 ). Manipulation piece  82  is energized toward the protruding position side by energizing spring  83 . 
     While manipulation piece  82  is located at the protruding position in a state where carrier tape CT is not located immediately above manipulation piece path  81  ( FIG.  15   ), the manipulation piece is pushed into manipulation piece path  81  by carrier tape CT and located at the non-protruding position in a state where carrier tape CT is located immediately above manipulation piece path  81 . In  FIG.  15   , information on the position of manipulation piece  82  in manipulation piece path  81  is detected by manipulation piece position detector  84 . 
     In  FIG.  4   , manipulation and display part  26  is provided on an upper surface of grip part  21 G provided in an upper portion of frame  21  on the upstream side in a state of being exposed upward. Manipulation and display part  26  is provided with buttons and the like for operator OP to instruct controller  27  to perform necessary work, a lamp for giving various notifications to operator OP, and the like. 
     In  FIG.  4   , controller  27  is provided in frame  21 . Controller  27  receives information input by operator OP from manipulation and display part  26 , information indicating insertion of the head portion of carrier tape CT into tape inlet  21 K, the insertion being detected by insertion detector  22   a , and other information. Controller  27  controls draw-in motor  22   c , drive motor  31 , air blow-out part  73 , and the like based on these pieces of input information. 
     Next, operation of tape feeder  13  will be described. For tape feeder  13  according to the present exemplary embodiment, there are prepared a “manual mode” in which operator OP manually performs initial peeling of cover tape TT from base tape BT, and an “automatic mode” in which the initial peeling is automatically performed without depending on the manual work of operator OP. Operator OP can select a desired mode from the manual mode and the automatic mode by performing predetermined manipulation through manipulation and display part  26 . 
     First, operation of tape feeder  13  conducted when operator OP selects the manual mode will be described. Regardless of whether operator OP selects the manual mode or the automatic mode, first, in a case of loading carrier tape CT to tape feeder  13 , operator OP processes the head portion of carrier tape CT drawn out from reel RL such that a head portion of cover tape TT is longer than the head portion of base tape BT by a predetermined length (e.g., about several centimeters). Thus, formed protruding portion of cover tape TT from the head portion of base tape BT is hereinafter referred to as “cover tape protruding portion TS” ( FIG.  2   ). 
     After performing the processing of forming cover tape protruding portion TS at the head portion of carrier tape CT, operator OP performs manipulation of selecting the manual mode through manipulation and display part  26 . Then, the head portion of carrier tape CT at which cover tape protruding portion TS is formed is inserted from tape inlet  21 K ( FIG.  4   ) of frame  21 . At this time, operator OP inserts carrier tape CT into tape inlet  21 K with cover tape protruding portion TS extending straight from a distal end of base tape BT. 
     When insertion detector  22   a  detects the head portion of carrier tape CT (base tape BT) being inserted into tape inlet  21 K, controller  27  causes draw-in motor  22   c  to work. As a result, draw-in sprocket  22   b  rotates (arrow Ra illustrated in  FIG.  4   ), and carrier tape CT is drawn into conveyance path  21 L. 
     When there is no preceding carrier tape CT in conveyance path  21 L, carrier tape CT drawn into conveyance path  21 L is delivered to introduction sprocket  35  as it is, and when there is preceding carrier tape CT in conveyance path  21 L, carrier tape CT is delivered to introduction sprocket  35  after waiting for the preceding carrier tape CT to be ejected from tape outlet  21 T. When carrier tape CT is delivered from draw-in sprocket  22   b  to introduction sprocket  35 , controller  27  stops draw-in motor  22   c . As a result, draw-in sprocket  22   b  is brought into a free rotation state in which conveyance of carrier tape CT by introduction sprocket  35  is not hindered. 
     Controller  27  then stops drive motor  31  at timing when cover tape protruding portion TS of carrier tape CT conveyed in the downstream direction by introduction sprocket  35  reaches opening  24 K of cover member  24 . Then, the controller causes manipulation and display part  26  to turn on a predetermined lamp and to urge operator OP to perform work (setting work) of setting cover tape TT on cover tape peeling mechanism  25 . After visually recognizing lighting of the lamp of manipulation and display part  26 , operator OP executes the setting work. 
     In the setting work, operator OP first draws out cover tape protruding portion TS (i.e., cover tape TT) above cover member  24  from cover tape draw-out portion  24 H ( FIG.  6   ) provided on the upper surface of cover member  24 . Cover tape draw-out portion  24 H is located on an upstream side of opening  24 K of cover member  24 . After drawing out cover tape TT from cover tape draw-out portion  24 H, operator OP moves carrier tape CT to the downstream side while pulling cover tape TT to the upstream side, so that a predetermined length of cover tape TT is peeled off from base tape BT. 
     In  FIG.  7   ,  FIG.  13   , and  FIG.  15   , insertion guide  24 G extending substantially horizontally toward the downstream side is provided at a position of cover member  24  above first peeling gear  51 . A space below insertion guide  24 G is cover tape insertion port  24 E. Operator OP inserts the head portion of cover tape TT from cover tape insertion port  24 E to abut the head portion of cover tape TT on a contact portion (meshing portion) between first peeling gear  51  and third peeling gear  53 , and then manipulates third peeling gear  53  with a finger to rotate in the feeding direction (arrow R 3  illustrated in part (b) of  FIG.  9   ) so that a head portion of cover tape protruding portion TS is sandwiched between first peeling gear  51  and third peeling gear  53 . 
     When the head portion of cover tape TT (cover tape protruding portion TS) is sandwiched between first peeling gear  51  and third peeling gear  53 , operator OP further rotates third peeling gear  53  in the feeding direction to feed a part of cover tape TT into housing part  21 S. Accordingly, when an appropriate tension is applied to cover tape TT, the setting work is finished (see  FIG.  6   ). 
     In such setting work, when operator OP manipulates third peeling gear  53  in the feeding direction, first transmission gear  41   a  also rotates in the feeding direction via first peeling gear  51 , third transmission gear  41   c , and second transmission gear  41   b . However, even when first transmission gear  41   a  rotates, wheel  40  does not rotate by action of the above-described slip clutch provided between first transmission gear  41   a  and the wheel (first transmission gear  41   a  idles with respect to wheel  40 ), and carrier tape CT maintains a stationary state. Thus, operator OP can apply tension to cover tape TT by manipulating third peeling gear  53  without affecting the position of carrier tape CT on conveyance path  21 L. 
     When the setting work is finished, operator OP performs predetermined manipulation through manipulation and display part  26 . When detecting the predetermined manipulation being performed through the manipulation and display part, controller  27  causes drive motor  31  to restart the working, thereby causing introduction sprocket  35  to intermittently rotate in the tape advancing direction. As a result, carrier tape CT advances on conveyance path  21 L, is delivered to positioning sprocket  36 , and then advances in the further downstream direction. 
     A pitch feeding interval of carrier tape CT corresponds to an interval of pockets PK included in carrier tape CT. Therefore, when positioning sprocket  36  pitch-feeds carrier tape CT, each pocket PK stops at component supply position  13 P, and component BH in pocket PK is positioned at component supply position  13 P. 
     When introduction sprocket  35  intermittently rotates in the tape advancing direction and carrier tape CT is pitch-fed in the downstream direction, the gears of cover tape peeling mechanism  25  rotate in accordance with the intermittent rotation of introduction sprocket  35 , and the three peeling gears (first peeling gear  51 , second peeling gear  52 , and third peeling gear  53 ) intermittently rotate in the feeding direction. As a result, the head portion of cover tape TT is fed to the upstream side (inside housing part  21 S), while carrier tape CT advances to the downstream side, resulting in being gradually peeled off from base tape BT. 
     As described above, component supply position  13 P is located downstream of cover tape draw-out portion  24 H, which is the position where cover tape TT is peeled off from base tape BT. Therefore, at a time point where pocket PK storing component BH reaches component supply position  13 P, cover tape TT covering pocket PK is already peeled off from base tape BT, and component BH is exposed upward. Mounting head  14  therefore can suck and take out component BH exposed from pocket PK at component supply position  13 P by nozzle  14 N. 
     Carrier tape CT (base tape BT) after pocket PK passes through component supply position  13 P is delivered from positioning sprocket  36  to ejection sprocket  38 . Carrier tape CT delivered to ejection sprocket  38  is further conveyed in the downstream direction by ejection sprocket  38  to be ejected from tape outlet  21 T to an outside of cover member  24  (i.e., an outside of tape feeder  13 ) ( FIG.  4   ). Since ejection sprocket  38  is provided near tape outlet  21 T, it is possible to reliably eject, from tape outlet  21 T, carrier tape CT just before component shortage, and even carrier tape CT having a rear portion separated from engagement with the pins of positioning sprocket  36 . 
     First peeling gear  51  and third peeling gear  53  rotate in the feeding direction in conjunction with the rotation operation of introduction sprocket  35  in the tape advancing direction. Therefore, cover tape TT peeled off from base tape BT and sandwiched between first peeling gear  51  and third peeling gear  53  is fed (ejected) into housing part  21 S as carrier tape CT is conveyed in the downstream direction. Cover tape TT fed into housing part  21 S is then collected by operator OP. 
     As described above, in tape feeder  13  according to the present exemplary embodiment, introduction sprocket  35 , positioning sprocket  36 , ejection sprocket  38 , first peeling gear  51 , and third peeling gear  53  are driven upon reception of rotational power of drive motor  31 , and conveyance operation of carrier tape CT and feeding operation of cover tape TT to housing part  21 S can be performed by one power source (drive motor  31 ). 
     Next, operation of tape feeder  13  conducted when operator OP selects the automatic mode will be described. After selecting the automatic mode through manipulation and display part  26 , operator OP inserts, into tape inlet  21 K of frame  21 , the head portion of carrier tape CT on which cover tape protruding portion TS is formed. 
     When insertion detector  22   a  detects the head portion of carrier tape CT (base tape BT) being inserted into tape inlet  21 K, controller  27  causes draw-in motor  22   c  to work. As a result, draw-in sprocket  22   b  rotates (arrow Ra illustrated in  FIG.  4   ), and carrier tape CT is drawn into conveyance path  21 L. Similarly to the case where the manual mode is set, when there is no preceding carrier tape CT in conveyance path  21 L, carrier tape CT drawn into conveyance path  21 L is delivered to introduction sprocket  35  as it is, and when there is preceding carrier tape CT in conveyance path  21 L, carrier tape CT is delivered to introduction sprocket  35  after waiting for preceding carrier tape CT to be ejected from tape outlet  21 T. Then, similarly to the case where the manual mode is set, when carrier tape CT is delivered from draw-in sprocket  22   b  to introduction sprocket  35 , controller  27  stops draw-in motor  22   c  to bring draw-in sprocket  22   b  into the free rotation state. 
     When the head portion of carrier tape CT (base tape BT) conveyed by introduction sprocket  35  in the downstream direction reaches above manipulation piece  82 , manipulation piece  82  energized by energizing spring  83  and positioned at the protruding position is pushed down by carrier tape CT and displaced to the non-protruding position ( FIG.  16 A , arrow Y 1  illustrated in the figure). In a case where the automatic mode is set, when manipulation piece position detector  84  detects manipulation piece  82  being displaced from the protruding position to the non-protruding position, controller  27  switches operation direction of drive motor  31 . 
     Introduction sprocket  35  rotating in the tape advancing direction temporarily stops due to switching of the operation direction of drive motor  31  and then rotates in the tape retracting direction (arrow RR illustrated in  FIG.  16 B ). As a result, carrier tape CT is conveyed toward the upstream side, and the three peeling gears (first peeling gear  51 , second peeling gear  52 , and third peeling gear  53 ) rotate in reverse directions (arrow Rr illustrated in  FIG.  16 B ). 
     When the head portion of carrier tape CT (base tape BT) is positioned on an upstream side of manipulation piece  82  as carrier tape CT is conveyed toward the upstream side, manipulation piece  82  is not pushed downward by carrier tape CT, and thus returns to the protruding position by an energizing force of energizing spring  83  (arrow Y 2  illustrated in  FIG.  16 B ). When manipulation piece position detector  84  detects manipulation piece  82  being returned to the protruding position, controller  27  switches the operation direction of drive motor  31  again at timing when the head portion of cover tape protruding portion TS is located upstream of air blow-out port  71  ( FIG.  16 B ). 
     When the operation direction of drive motor  31  is switched, introduction sprocket  35  rotating in the tape retracting direction temporarily stops and then rotates in the tape advancing direction (arrow R 1  illustrated in  FIG.  17 A ), and carrier tape CT is conveyed again toward the downstream direction. When introduction sprocket  35  rotates in the tape advancing direction, each of first peeling gear  51 , second peeling gear  52 , and third peeling gear  53  rotates in the feeding direction (arrow Rn illustrated in  FIG.  17 A ). 
     After switching the operation direction of drive motor  31 , controller  27  causes air blow-out part  73  to work and causes air Air to blow out from air blow-out port  71  into conveyance path  21 L for a fixed period of time ( FIG.  17 A ). As a result, when passing above air blow-out port  71 , cover tape protruding portion TS of carrier tape CT to be conveyed in the downstream direction is blown up by the air blown out from air blow-out port  71 . Then, cover tape protruding portion TS passes through through hole  64 H of tape pressing member  64  to move upward of tape pressing member  64  ( FIG.  17 A ). 
     When carrier tape CT with cover tape protruding portion TS moved upward of tape pressing member  64  is conveyed in the downstream direction, the distal end portion of cover tape protruding portion TS approaches, from below, the contact portion (meshing portion) between first peeling gear  51  and second peeling gear  52  rotating in the feeding direction. Then, upon arrival of the distal end portion of cover tape protruding portion TS at the contact portion (meshing portion) between first peeling gear  51  and second peeling gear  52 , cover tape protruding portion TS is sandwiched between first peeling gear  51  and second peeling gear  52  ( FIG.  17 B ). 
     As described above, when first peeling gear  51  and second peeling gear  52  rotate in the feeding direction with cover tape protruding portion TS sandwiched between first peeling gear  51  and second peeling gear  52  (carrier tape CT is conveyed in the downstream direction), cover tape TT is peeled off from base tape BT. Then, a state continues in which cover tape TT is peeled off from base tape BT as introduction sprocket  35  rotates in the tape advancing direction. 
     In consideration of a case where one blowing of air Air from air blow-out port  71  does not cause cover tape protruding portion TS to move upward of tape pressing member  64  through through hole  64 H, advancing operation and retreating operation of carrier tape CT may be repeated several times in such a manner as  FIG.  18 A → FIG.  17 B - FIG.  18 A  before the processing proceeds from  FIG.  18 A  to  FIG.  18 B . 
     Cover tape TT peeled off from base tape BT is fed upward while being sandwiched between first peeling gear  51  and second peeling gear  52  that rotate in the feeding direction. At this time, cover tape TT is guided by guide part  61 M of first guide member  61  to advance in a curved route along an outer periphery of first peeling gear  51  toward a direction of the contact portion between first peeling gear  51  and third peeling gear  53 . 
     Specifically, in the present exemplary embodiment, guide part  61 M of first guide member  61  is configured to guide cover tape TT to move along the outer periphery of first peeling gear  51  in the curved route toward the contact portion between first peeling gear  51  and third peeling gear  53 , cover tape TT being peeled off from base tape BT by first peeling gear  51  and second peeling gear  52 . 
     As described above, in the present exemplary embodiment, first peeling gear  51  as a first rotation body and second peeling gear  52  as a second rotation body that rotate in contact with each other serve as peeling parts that feed cover tape TT sandwiched therebetween to peel cover tape TT from base tape BT. In addition, in the present exemplary embodiment, first guide member  61  is configured to guide cover tape TT so as to move along the outer periphery of first peeling gear  51  toward the part between first peeling gear  51  and third peeling gear  53  (the contact portion between first peeling gear  51  and third peeling gear  53 ), cover tape TT being peeled off from base tape BT by first peeling gear  51  and second peeling gear  52 . 
     At start of conveying new carrier tape CT by tape feeder  13 , when new carrier tape CT is conveyed in the upstream direction in order that first peeling gear  51  and second peeling gear  52  catch cover tape TT from carrier tape CT, first peeling gear  51  and third peeling gear  53  rotate in the reverse directions. As a result, although a rear portion of cover tape TT is returned in a direction opposite to an ejection direction, at this time, the rear portion of cover tape TT moves in a route different from the curved route guided by first guide member  61 . Specifically, the rear portion of cover tape TT is conveyed along an upper surface of first guide member  61  by first guide member  61  and ejected from cover tape insertion port  24 E of cover member  24 . 
     Cover tape TT (cover tape protruding portion TS) peeled off from base tape BT by first peeling gear  51  and second peeling gear  52  reaches the contact portion between first peeling gear  51  and third peeling gear  53  as a result of being guided by first guide member  61  so as to move along the outer periphery of first peeling gear  51 . Then, after being sandwiched between first peeling gear  51  and third peeling gear  53  that rotate in the feeding direction along with the rotation of introduction sprocket  35  ( FIG.  18 A ), the head portion of cover tape TT having reached the contact portion between first peeling gear  51  and third peeling gear  53  is fed to housing part  21 S and ejected into housing part  21 S ( FIG.  18 B ). 
     As described above, in the present exemplary embodiment, first peeling gear  51  and third peeling gear  53  as a third rotation body which rotate in a contact state serve as ejection parts which eject cover tape TT peeled off from base tape BT by first peeling gear  51  and second peeling gear  52  by sandwiching and feeding cover tape TT. 
     Here, as described above, first locking part  62   a  of second guide member  62  is positioned between two first peeling gears  51 , and first guide member  61  is positioned between two second peeling gears  52 . Further, as illustrated in  FIG.  15   , plate-shaped part  24 R attached to third peeling gear shaft  53 J which is a rotation shaft of third peeling gear  53  (or provided as a part of cover member  24 ) is located between lower regions of two third peeling gears  53 . Therefore, it is possible to prevent occurrence of an operation trouble of tape feeder  13  caused by winding of cover tape TT (including cover tape protruding portion TS), which can be easily deformed due to its small thickness, around the two gears arranged in the X direction, or caused by cover tape TT entering between the two gears or getting entangled. 
     As described above, in the present exemplary embodiment, first locking part  62   a  of second guide member  62  is located between two first peeling gears  51  to serve as a first winding prevention part that prevents cover tape TT from winding around two first peeling gears  51 . First guide member  61  is located between two second peeling gears  52  and serves as a second winding prevention part that prevents cover tape TT from winding around two second peeling gears  52 . Plate-shaped part  24 R is located between two third peeling gears  53  and serves as a third winding prevention part that prevents cover tape TT from winding around two third peeling gears  53 . 
     Here, it is assumed that immediately after a rear portion of carrier tape CT getting near to component shortage passes through through hole  64 H, a head portion of subsequent carrier tape CT is inserted into tape inlet  21 K. In this case, there may occur a situation where in a state where the rear portion of cover tape TT being peeled off from preceding carrier tape CT and completely separated from base tape BT thereof has not yet passed through the contact portion between first peeling gear  51  and third peeling gear  53 , manipulation piece  82  is pushed down by the head portion of subsequent carrier tape CT that has advanced in the downstream direction ( FIG.  19 A ). 
     In such a situation, immediately after that, introduction sprocket  35  is rotated in the tape retracting direction (arrow RR illustrated in  FIG.  19 B ), so that the three peeling gears (first peeling gear  51 , second peeling gear  52 , and third peeling gear  53 ) rotate in the reverse directions (arrow Rr illustrated in  FIG.  19 B ). As a result, first peeling gear  51  and third peeling gear  53  return cover tape TT being sandwiched with the rear portion thereof as a head to a direction opposite to the ejection direction (direction toward housing part  21 S). 
     However, when cover tape TT is returned by first peeling gear  51  and third peeling gear  53 , unlike time of peeling off cover tape TT, cover tape TT is not guided by such a curved guide surface as guide part  61 M, and thus cover tape TT advance substantially straight along a tangential direction of first peeling gear  51  and third peeling gear  53 . For this reason, the rear portion of cover tape TT returned from first peeling gear  51  and third peeling gear  53  does not return along the route through which the cover tape is fed by first peeling gear  51  and second peeling gear  52 , but advances in a direction (specifically, as illustrated in  FIG.  19 B , a direction passing above first guide member  61  toward cover tape insertion port  24 E) different from a direction toward guide part  61 M from between third peeling gear  53  and guide part  61 M. 
     Specifically, in the present exemplary embodiment, guide part  61 M is provided that guides cover tape TT separated from base tape BT by first peeling gear  51  and second peeling gear  52  so as to advance in the route toward the contact portion between first peeling gear  51  and third peeling gear  53 , and in a case where after the rear portion of cover tape TT received by first peeling gear  51  and third peeling gear  53  from first peeling gear  51  and second peeling gear  52  passes through guide part  61 M, cover tape TT is fed back, the rear portion of cover tape TT advances in the direction different from the direction toward guide part  61 M from between third peeling gear  53  and guide part  61 M. Therefore, even in a case where peeled off cover tape TT is returned in the direction opposite to the direction at the time of peeling-off because subsequent carrier tape CT is loaded following preceding carrier tape CT, cover tape TT does not return to guide part  61 M, and thus does not flow back to conveyance path  21 L of carrier tape CT. Therefore, it is possible to prevent cover tape TT of preceding carrier tape CT from interfering with peeling of cover tape TT of subsequent carrier tape CT. 
     As described above, in tape feeder  13  according to the present exemplary embodiment, outer peripheral pin  35 T of introduction sprocket  35  that conveys carrier tape CT is brought into contact with recess  40 B provided on the outer periphery of wheel  40 , so that the wheel rotates in accordance with the rotation of the introduction sprocket  35 . Since contact surface  35 H of outer peripheral pin  35 T contacting the inner surface of recess  40 B, and contacted surface  40 H with which outer peripheral pin  35 T contacts out of the inner surface of recess  40 B are both formed of flat surfaces, and contact surface  35 H and contacted surface  40 H come into line contact with each other, outer peripheral pin  35 T does not come into point contact (do not locally abut) with the inner surface of recess  40 B unlike a case where outer peripheral pin  35 T has a conical shape. Therefore, wear of outer peripheral pin  35 T can be reduced, and durability of not only introduction sprocket  35  but also wheel  40  can be improved. 
     Although the exemplary embodiment of the present disclosure has been described in the foregoing, the present disclosure is not limited to the above exemplary embodiment, and various modifications and the like can be made. For example, the configuration of conveyance mechanism  23  described in the above exemplary embodiment is an example, and other configurations may be provided as long as carrier tape CT on conveyance path  21 L can be conveyed. 
     Further, each of the three peeling gears (first peeling gear  51 , second peeling gear  52 , and third peeling gear  53 ) constituting the peeling part and the ejection part of cover tape peeling mechanism  25  may be changed to another rotation body such as a roller member. In other words, the peeling part only needs to include the first rotation body and the second rotation body that rotate in the contact state, and the ejection part only needs to include the first rotation body and the third rotation body that rotate in the contact state. 
     The present disclosure is applicable to a component supply device that conveys a component supply tape storing a component and supplies the component to a component supply position.