Abstract:
The present invention relates to a chuck mechanism of a charge-discharge test device for a thin secondary battery, and aims to provide a chuck mechanism having excellent action controllability. The chuck mechanism includes: a chuck drive part which is movable in a direction toward a battery container housing a thin secondary battery; and a chuck activation part which is located away from the chuck drive part in the direction toward the battery container and whose movement in the same direction is restricted. In the chuck mechanism, when the chuck unit is moved in the direction toward the battery container, the chuck drive part activates a chuck member of the chuck activation part whose movement in the same direction is restricted.

Description:
TECHNICAL FIELD 
       [0001]    The present invention relates to a mechanism for chucking electrode terminals, used in a charge-discharge test device for a plate-shaped thin secondary battery. 
       BACKGROUND ART 
       [0002]    A thin secondary battery  1  having a plate shape as in  FIGS. 13 and 14  is used in many technical fields. The thin secondary battery  1  has a configuration in which a pair of sheet-shaped electrode terminals  5 ,  7  project out of a flat case  3  in one direction. 
         [0003]    As in the case of a conventional secondary battery, after being produced in a factory, the thin secondary battery  1  undergoes several charge-discharge tests for quality inspection, and then only that of acceptable quality is shipped in a half-charged state as a product. Patent Document 1 discloses a charge-discharge and inspection system for thin secondary batteries of this type. 
         [0004]    The conventional example includes: a battery container in which multiple thin secondary batteries are housed and arranged in a certain direction by inserting electrode terminals of thin secondary batteries into multiple insertion holes formed in a bottom plate of the battery container; a chuck mechanism for chucking the electrode terminals projecting from the insertion holes of the battery container; a first action (elevating) mechanism for moving the chuck mechanism; and a second action (elevating) mechanism for driving the chuck mechanism. The conventional example is configured such that after placing and arranging the multiple thin secondary batteries in the battery container, the chuck mechanism is moved closer to the battery container by the first action mechanism and is then driven to chuck the electrode terminals by the second action mechanism. 
       PRIOR ART DOCUMENT 
     Patent Document 
       [0000]    
       
         Patent Document 1: Japanese Patent Application Publication No. 2004-319334 
       
     
       SUMMARY OF INVENTION 
     Technical Problem 
       [0006]    However, as mentioned earlier, the conventional example includes individual mechanisms for the first action (elevating) of moving the chuck mechanism closer to the battery container, and the second action (elevating) of chucking the electrode terminals by the chuck mechanism. Accordingly, the actions need to be controlled independently, which may complicate the action controllability. 
         [0007]    The present invention has been made in view of the above circumstances, and aims to provide a chuck mechanism of a charge-discharge test device for a thin secondary battery, the mechanism having excellent action controllability. 
       Solution to Problem 
       [0008]    To achieve the above objective, a chuck mechanism of a charge-discharge test device for a thin secondary battery according to the first aspect includes a chuck unit including: a chuck drive part which is movable in a direction toward a battery container body housing a thin secondary battery; and a chuck activation part which is located away from the chuck drive part in the direction toward the battery container body and whose movement in the same direction is restricted. In the chuck mechanism, when the chuck unit is moved in the direction toward the battery container body, the chuck drive part activates a chuck member of the chuck activation part whose movement in the same direction is restricted. 
         [0009]    In addition, according to the invention of the second aspect, in the chuck mechanism of a charge-discharge test device for a thin secondary battery according to the first aspect, the chuck drive part is a roller holding member formed to be movable in a front-rear direction of a supporting base by driving of drive means attached to the supporting base, and including on a front surface thereof multiple pairs of rollers rotatably disposed in parallel in a left-right direction of the supporting base; the chuck activation part is a chuck holding member attached in front of the roller holding member via a spring member, and including multiple chuck members each formed of a pair of strip-shaped metal plates which are inserted between the corresponding pair of rollers and whose tip end sides are spread open toward the front in a substantially V-shape in plan view; the supporting base includes a restriction part for restricting a forward movement of the chuck holding member; and the movement of the chuck holding member moved forward together with the roller holding member by the driving of the drive means is restricted by the restriction part, as well as the tip end sides of each of the chuck members inserted between the corresponding pair of rollers are closed by the corresponding pair of rollers when the roller holding member moves forward even further against a spring force of the spring member, so that each of the chuck members chucks an electrode terminal of each of thin secondary batteries housed in the battery container body in correspondence with the chuck members. 
         [0010]    Further, according to the invention of the third aspect, in the chuck mechanism of a charge-discharge test device for a thin secondary battery according to the second aspect, the roller holding member is formed by disposing multiple divided roller holding members in parallel on two upper and lower shafts arranged in the left-right direction of the supporting base; the chuck holding member is formed by disposing multiple divided chuck holding members in parallel on two upper and lower shafts arranged in the left-right direction of the supporting base; and the spring member extends between each of coupling brackets attached to left and right outer peripheries of the roller holding member and a corresponding one of coupling brackets attached to left and right outer peripheries of the chuck holding member. 
         [0011]    Further, according to the invention of the fourth aspect, in the chuck mechanism of a charge-discharge test device for a thin secondary battery according to the second aspect, an oxide film peeling and nipping member is attached to tip ends of the pair of metal plates. Furthermore, according to the invention of the fifth aspect, in the chuck mechanism of a charge-discharge test device for a thin secondary battery according to the fourth aspect, a slit is formed in the tip ends of the pair of metal plates in a front-rear direction, and the oxide film peeling and nipping member is attached to each of tip ends of each metal plate partitioned by the slit. 
       Effects of the Invention 
       [0012]    According to the present invention, the operation of moving the chuck unit in the direction toward the battery container enables the chuck drive part to activate the chuck member of the chuck activation part to chuck a thin secondary battery. Hence, the present invention has an advantage of excellent action controllability. 
     
    
     
       BRIEF DESCRIPTION OF DRAWINGS 
         [0013]      FIG. 1  is a front perspective view of a chuck mechanism of an embodiment according to claims  1  to  5 . 
           [0014]      FIG. 2  is a back perspective view of the chuck mechanism. 
           [0015]      FIG. 3  is a back perspective view of the chuck mechanism. 
           [0016]      FIG. 4  is a plan view of the chuck mechanism. 
           [0017]      FIG. 5  is a front perspective view of a divided roller holding member and a divided chuck holding member. 
           [0018]      FIG. 6  is a back perspective view of the divided roller holding member and the divided chuck holding member. 
           [0019]      FIG. 7  is a lateral view of the chuck mechanism. 
           [0020]      FIG. 8  is a plan view of the chuck mechanism. 
           [0021]      FIG. 9  is a lateral view of the chuck mechanism. 
           [0022]      FIG. 10  is a plan view of the chuck mechanism where chuck members are closed by rollers. 
           [0023]      FIG. 11  is a lateral view of the chuck mechanism where the chuck members are closed by the rollers. 
           [0024]      FIG. 12  is a plan view of the chuck mechanism and a magazine. 
           [0025]      FIG. 13  is a perspective view of a thin secondary battery. 
           [0026]      FIG. 14  is a plan view of the thin secondary battery. 
       
    
    
     DESCRIPTION OF EMBODIMENTS 
       [0027]      FIGS. 1 to 12  show an embodiment of a chuck mechanism according to claims  1  to  5 . In  FIGS. 1 to 3 , reference sign  31  denotes a supporting base having a rectangular solid shape formed of 15 columns  31   a  to  31   o  arranged in the front, back, left, and right of the supporting base  31 . A supporting plate  33  covering an area between the center of the supporting base  31  in a front-rear direction and a back portion side thereof is fixed on three columns  31   i  to  31   k  laid laterally across substantial centers of the left and right sides and a substantial center of the back side of the support base  31 . As in  FIG. 4 , a double-acting air cylinder (drive means)  36  including a piston rod  35  extending and contracting in the front-rear direction of the supporting base  31  is mounted in the center of the supporting plate  33 . 
         [0028]    Then, a roller holding member (chuck drive part)  37  including multiple pairs of rollers  89  for activating chuck members  101  of a later-mentioned chuck holding member (chuck activation part)  41  is attached to a tip end of the piston rod  35 , and the chuck holding member  41  is attached in front of the roller holding member  37  with two each of left and right coil springs  39  interposed between the chuck holding member  41  and the roller holding member  37 . 
         [0029]    Specifically, as in  FIGS. 1 to 4 , columnar guide members  43  are inserted in a casing  36   a  of the air cylinder  36  on the respective left and right sides of the piston rod  35  along the piston rod  35 , and a thick plate-shaped coupling member  45  is fixed on tip ends of both guide members  43  and of the piston rod  35 . Moreover, a long supporting bracket  47  substantially U-shaped in plan view for supporting the roller holding member  37  is attached to the coupling member  45  in such a manner as to extend in the left-right direction of the supporting base  31 . Left and right flanges  49  of the supporting bracket  47  are bent in an L-shape toward the front of the supporting base  31 . 
         [0030]    Additionally, the roller holding member  37  is formed by disposing multiple divided roller holding members  55  laterally in parallel on two upper and lower shafts  51 ,  53  installed across the left and right flanges  49 . 
         [0031]      FIGS. 5 and 6  each show one of the divided roller holding members  55  and a divided chuck holding member  57 . As mentioned earlier, the roller holding member  37  is formed by disposing the multiple divided roller holding members  55  in parallel on the shafts  51 ,  53 , and as will be mentioned later, the chuck holding member  41  is formed by disposing multiple divided chuck holding members  57  in parallel on two upper and lower shafts  59 ,  61 . 
         [0032]    As in  FIGS. 5 and 6 , first of all in the divided roller holding member  55 , two upper and lower block members  63 ,  65  having a rectangular solid shape are coupled by a single coupling plate  67 . A shaft insertion hole  69  into which the shaft  51  is inserted is formed in the center of the upper block member  63 , and a shaft insertion hole  71  into which the shaft  53  is inserted is provided in the center of the lower block member  65 . Tubular spacers  73  through which the shaft insertion holes  69 ,  71  are open project on left and right sides of each of the block members  63 ,  65 . 
         [0033]    A pair of upper and lower arm members  75  substantially L-shaped in cross section are respectively screwed on the front sides of the block members  63 ,  65 . A roller attachment plate  81  in which upper and lower rectangular openings  77 ,  79  are formed is integrally formed on tip ends of the arm members  75 , and the roller attachment plate  81  is disposed to face the coupling plate  67 . 
         [0034]    Moreover, a pair of roller attachment brackets  83 ,  85  are fixed in upper and lower parts of each of the openings  77 ,  79  of the roller attachment plate  81 , and an even number of roller attachment holes  87  are provided at equal intervals on tip end sides of each of the roller attachment brackets  83 ,  85  in such a manner that the sets of roller attachment holes  87  face each other. In addition, the multiple pairs of rollers  89  (four pairs on each of the upper and lower pairs of brackets in the embodiment) are rotatably attached to the roller attachment holes  87  between the upper and lower pairs of roller attachment brackets  83 ,  85 . 
         [0035]    The divided roller holding member  55  is thus configured, and as mentioned earlier, the two upper and lower shafts  51 ,  53  installed across the left and right flanges  49  of the supporting bracket  47  are inserted into the upper and lower shaft insertion holes  71  of each of the divided roller holding members  55  (block member  63 ,  65 ). As in  FIGS. 2 and 3 , the two shafts  51 ,  53  are inserted into holding members  91  extending frontward from the centers of upper and lower parts of the supporting bracket  47 , respectively. On left and right sides of the holding members  91 , four each of the divided roller holding members  55  are disposed in parallel between the shafts  51 ,  53  with the spacers  73  interposed therebetween. The roller holding member  37  is supported by the supporting bracket  47 . Additionally, a coupling bracket  93  L-shaped in cross section is attached to an outer periphery of each of the left and right flanges  49 . 
         [0036]    Next, a description is given of a configuration of the chuck holding member  41 . As in  FIG. 1 , the chuck holding member  41  also has a configuration in which the multiple divided chuck holding members  57  are disposed laterally in parallel on the two upper and lower shafts  59 ,  61  arranged in the left-right direction of the supporting base  31 . 
         [0037]    As in  FIGS. 5 and 6 , the divided chuck holding member  57  is paired with the divided roller holding member  55  to form a unit, and thus the roller holding member  37  and the chuck holding member  41  form a chuck unit as a whole. 
         [0038]    In the drawings, reference sign  95  denotes a thick plate-shaped chuck attachment member disposed along the roller attachment plate  81  between the arm members  75 , and the shafts  59 ,  61  are inserted into shaft insertion holes  97 ,  99 , which are provided in upper and lower parts of the center of the chuck attachment member, in such a manner as to extend in the left-right direction of the supporting base  31 . Then, the multiple (four each in upper and lower parts of the chuck attachment member  95  in the embodiment) chuck members  101  are disposed laterally in parallel in upper and lower rows in correspondence with the aforementioned pairs of rollers  89 , in upper and lower parts of a front surface of the chuck attachment member  95 . 
         [0039]    As shown in the drawings, the chuck member  101  is formed of a pair of strip-shaped metal plates  103 ,  105  made of phosphor bronze, for example, having a spring-like nature. The back end sides of the metal plates  103 ,  105  are lapped and joined together and penetrate a through hole (not shown) formed in the chuck attachment member  95 . The back end of one metal plate  103  projecting from a back surface of the chuck attachment member  95  is bent in an L-shape along the back surface of the chuck attachment member  95 , and screwed onto the back surface. Similarly, the back end of the other metal plate  105  projecting from the back surface of the chuck attachment member  95  is bent in an L-shape along the back surface of the chuck attachment member  95 , and screwed onto the back surface. As in  FIG. 6 , the back ends of the metal plates  103 ,  105  are cut into short lengths in upper and lower directions and disposed in upper and lower parts of the back surface of the chuck attachment member  95 . Moreover, wires of a charge-discharge test device can be connected to the back ends of the metal plates  103 ,  105  projecting from the back surface of the chuck attachment member  95 . 
         [0040]    Additionally, the aforementioned pair of rollers  89  are disposed in correspondence with each chuck member  101  (the metal plates  103 ,  105 ) projecting toward the front of the chuck attachment member  95 , and each pair of metal plates  103 ,  105  are inserted between the corresponding pair of rollers  89 . 
         [0041]    As in  FIG. 5 , the tip end sides of the metal plates  103 ,  105  inserted between the pair of rollers  89  spread open in a substantially V-shape in plan view, and the tip ends thereof are bent slightly inward. As will be mentioned later, when the roller holding member  37  is moved forward by driving of the air cylinder  36 , the metal plates  103 ,  105  (the chuck member  101 ) being spread open in the substantially V-shape in plan view are closed by the pair of rollers  89 . 
         [0042]    In addition, a slit  106  is formed in the front-rear direction at the tip end of each of the metal plates  103 ,  105 . As in  FIG. 5 , a pair of oxide film peeling and nipping members (hereinafter referred to as “peeling and nipping members”)  108  are fixed by riveting, on the tip end sides of the metal plates  103 ,  105  partitioned by the slit  106 . 
         [0043]    Specifically, as in  FIG. 1 , an attachment hole  110  to which the peeling and nipping member  108  is fixed by riveting is provided on the tip end side of each of the metal plates  103 ,  105  partitioned by the slit  106 . As in  FIG. 5 , the peeling and nipping member  108  is formed of a leg member  108   a  fixed by riveting to the attachment hole  110 , and a thick disk-shaped head portion  108   b  having a circular shape in plan view integrally formed with the leg member  108   a . Moreover, irregularities  108   c  are formed by knurling on a nipping surface which is a top part of the head portion  108   b . As will be mentioned later, when the metal plates  103 ,  105  are closed by the pair of rollers  89  with the electrode terminals  5 ,  7  of the thin secondary battery  1  being disposed between the metal plates  103 ,  105 , the irregularities  108   c  of the pair of peeling and nipping members  108  are pressed against the front and back sides of the electrode terminals  5 ,  7  to peel off the oxide film formed on the surfaces of the electrode terminals  5 ,  7 . 
         [0044]    The chuck member  101  is configured in the above-mentioned manner, and as has been described, the four chuck members  101  are disposed laterally in parallel at upper and lower parts of the front surface of the chuck attachment member  95 . Additionally, the chuck holding member  41  is formed by disposing the divided chuck holding members  57  in parallel between the two shafts  59 ,  61  in correspondence with the divided roller holding members  55 . 
         [0045]    As in  FIGS. 1 to 3 , a coupling bracket  107  L-shaped in cross section is attached to projecting ends of the shafts  59 ,  61  projecting outward from each of the left and right divided chuck holding members  57 . 
         [0046]    The coupling brackets  107  and the coupling brackets  93  are held to be movable in the front-rear direction of the supporting base  31  by guide members  109  attached on left and right sides of the supporting base  31 . One guide member  109  is supported by a plate  111  which is attached among the columns  31   g ,  31   l ,  31   i  on the right side of the supporting base  31 , and the other guide member  109  is supported by a plate  113  which is attached among the columns  31   h ,  31   j ,  31   m  on the left side of the supporting base  31 . 
         [0047]    Moreover, as in  FIG. 1 , two shafts  117  inserted through upper and lower shaft insertion holes  115  provided in each coupling bracket  107  are attached to the corresponding coupling bracket  93  in parallel. Additionally, the coil spring (spring member)  39  is wound around each of the shafts  117 . As in  FIGS. 1 to 7 , when the piston rod  35  of the air cylinder  36  is retracted, the chuck member  101  is inserted between the rollers  89 , the tip end sides of the chuck member  101  are spread open in the V-shape, and the chuck holding member  41  is located away from the roller holding member  37  at the front thereof by a spring force of the coil spring  39 . 
         [0048]    Note that in this state, the chuck member  101  is disposed inside the supporting base  31  as in  FIGS. 4 and 7 . 
         [0049]    Then, when the air cylinder  36  is driven and the piston rod  35  extends forward from the state in  FIGS. 1 to 7 , the roller holding member  37  attached to the piston rod  35  and the chuck holding member  41  attached to the roller holding member  37  are moved forward. As in  FIGS. 8 and 9 , when the coupling brackets  107  attached to the left and right outer peripheries of the chuck holding member  41  reach the left and right columns  31   l ,  31   m  of the supporting base  31 , the coupling brackets  107  come into contact with the columns (restriction parts)  31   l ,  31   m  to restrict forward movement of the chuck holding member  41 . 
         [0050]    Additionally, as in  FIG. 1 , a column  119  (restriction part) is installed to vertically bridge the columns  31   a ,  31   b  of the supporting base  31  at the centers thereof. When the left and right coupling brackets  107  come into contact with the columns  31   l ,  31   m  as mentioned above, the shafts  59 ,  61  also come into contact with the column  119  to restrict forward movement of the chuck holding member  41 . 
         [0051]    When forward movement of the chuck holding member  41  is thus restricted, the chuck members  101  project toward the front of the supporting base  31  as in  FIGS. 8 and 9 . 
         [0052]    Besides, such restriction on the forward movement of the chuck holding member  41  does not hinder driving of the air cylinder  36  at all, and the piston rod  35  extends even further. With this, the roller holding member  37  moves even further forward against the spring force of the left and right coil springs  39  as in  FIGS. 10 and 11 , causing the pairs of rollers  89  to move forward. Hence, the metal plates  103 ,  105  of each chuck member  101  being spread open in the substantially V-shape in plan view are closed by the corresponding pair of rollers  89 , the pairs of peeling and nipping members  108  attached on the tip ends of the metal plates  103 ,  105  are pressed against each other, and the piston rod  35  stops its extension at this position. 
         [0053]    Incidentally, in the drawings, reference signs  121 ,  123  denote connectors for connecting wires of a charge-discharge device to the back ends of the metal plates  103 ,  105  projecting from the back surface of the chuck attachment member  95 . 
         [0054]    The chuck mechanism  125  of the embodiment is configured in the above-mentioned manner. Accordingly, to carry out a charge-discharge test for the thin secondary battery  1  using the chuck mechanism  125 , it suffices that a magazine (resin spacer)  127  in which multiple thin secondary batteries  1  are housed be moved closer to the chuck mechanism  125  as in  FIG. 12  by moving means not shown. Note that the piston rod  35  of the air cylinder  36  should be retracted as in  FIG. 4  at this time. 
         [0055]    As in  FIG. 12 , in the magazine  127 , one each of the multiple thin secondary batteries  1  is housed in each of housing chambers  131  segmented by multiple separation walls  129 , in such a manner as to project the pairs of electrode terminals  5 ,  7  frontward. The magazine  127  is moved closer to the chuck mechanism  125 , with the electrode terminals  5 ,  7  of the thin secondary battery  1  away from the chuck mechanism  125  by a distance equal to a stroke of the piston rod  35 , such that the electrode terminals  5 ,  7  can later be inserted between the pairs of spread-open metal plates  103 ,  105  of the chuck member  101 . 
         [0056]    Then, when the air cylinder  36  is driven while the wires of the charge-discharge test device are connected to the back ends of the metal plates  103 ,  105  projecting from the back surface of the chuck attachment member  95 , the piston rod  35  extends forward, and the roller holding member  37  as well as the chuck holding member  41  attached to the roller holding member  37  are moved forward. 
         [0057]    Thereafter, when the chuck holding member  41  thus moves, the coupling brackets  107  attached to left and right sides of the chuck holding member  41  come into contact with the left and right columns  31   l ,  31   m  of the supporting base  31 , and the shafts  59 ,  61  come into contact with the column  119  to restrict forward movement of the chuck holding member  41 . 
         [0058]    At this time, as in  FIG. 12 , the chuck members  101  have moved to a position where the chuck members  101  can nip the upper and lower electrode terminals  5 ,  7  of the thin secondary battery  1 . 
         [0059]    Further, such restriction on the movement of the chuck holding member  41  does not hinder driving of the air cylinder  36  at all, and the piston rod  35  extends even further. Accordingly, the roller holding member  37  moves even further forward against the spring force of the left and right coil springs  39  as in  FIGS. 10 and 11 , causing the pairs of rollers  89  to move forward. Hence, the metal plates  103 ,  105  of each chuck member  101  being spread open in the substantially V-shape in plan view are closed by the corresponding pair of rollers  89 . Thus, the peeling and nipping members  108  attached on the tip ends of the metal plates  103 ,  105  nip the upper and lower electrode terminals  5 ,  7  of the thin secondary battery  1  from left and right sides. 
         [0060]    In the embodiment, the tip end sides of the metal plates  103 ,  105  are segmented by providing the slit  106  in each of the tip ends of the metal plates  103 ,  105  in the front-rear direction. For this reason, even if there is an assembly error or the like in the metal plates  103 ,  105 , the peeling and nipping members  108  are surely pressed against the surfaces of the electrode terminals  5 ,  7  so that the irregularities  108   c  of the nipping surfaces may peel off the oxide film formed on the surfaces of the electrode terminals  5 ,  7 . 
         [0061]    Thereafter, electricity is supplied through the wires of the charge-discharge test connected to the back end side of the chuck member  101  (the metal plates  103 ,  105 ), and the charge-discharge test for the thin secondary batteries  1  nipped by the chuck members  101  is started. 
         [0062]    Then, after completion of the test, the piston rod  35  of the air cylinder  36  is retracted to move the roller holding member  37  and the chuck holding member  41  backward. With this, the metal plates  103 ,  105  of the chuck member  101  which were closed by the roller  89  are spread open again, and are separated from the electrode terminals  5 ,  7 . 
         [0063]    Thus, use of the chuck mechanism  125  of the embodiment when carrying out a charge-discharge test for the thin secondary battery  1  not only makes it possible to carry out the charge-discharge test for a large number of thin secondary batteries  1  at once, but also has the following advantage. Specifically, the chuck mechanism  125  is configured such that only a simple mechanism of driving the air cylinder  36  to extend the piston rod  35  is required for the multiple pairs of rollers  89  of the roller holding member  37  to make the chuck members  101  (the multiple pairs of metal plates  1031 ,  105 ) of the chuck holding member  41  perform the chucking action. Thus, action controllability is improved significantly as compared to the conventional example disclosed in Patent Document 1. 
         [0064]    The use of the chuck mechanism  125  also has the following advantages. Specifically, since the mechanism is configured such that the pair of rollers  89  are used to close the metal plates  103 ,  105  of the chuck member  101  being spread open, opening and closing actions of the metal plates  103 ,  105  can be performed smoothly. Moreover, since the tip end sides of the metal plates  103 ,  105  are segmented by providing the slit  106  in each of the tip ends of the metal plates  103 ,  105  in the front-rear direction, the metal plates  103 ,  105  (the peeling and nipping members  108 ) can surely nip the electrode terminals  5 ,  7  as well as can favorably peel off the oxide film on the surfaces of the electrode terminals  5 ,  7  by using the irregularities  110   c , even if there is an assembly error or the like in the metal plates  103 ,  105 . 
         [0065]    Furthermore, the roller holding member  37  is formed by disposing the multiple divided roller holding members  55  laterally in parallel, and the chuck holding member  41  is formed by disposing the multiple divided chuck holding members  57  laterally in parallel. Hence, the chuck mechanism  125  has an advantage that its maintenance is easy since the individual parts can be changed easily. 
         [0066]    Note that although the embodiment uses the air cylinder  36  as the drive means for moving the roller holding member  37  and other components forward and backward, the drive means is not limited to the air cylinder, but may be a motor or another actuator. 
       REFERENCE SIGNS LIST 
       [0000]    
       
         
           
               1  thin secondary battery 
               5 ,  7  electrode terminal 
               31  supporting base 
               31   a  to  31   o ,  119  column 
               33  supporting plate 
               35  piston rod 
               36  air cylinder 
               37  roller holding member 
               39  coil spring 
               41  chuck holding member 
               43 ,  109  guide member 
               45  coupling member 
               47  supporting bracket 
               51 ,  53 ,  59 ,  61  shaft 
               55  divided roller holding member 
               57  divided chuck holding member 
               63 ,  65  block member 
               67  coupling plate 
               69 ,  71 ,  97 ,  99 ,  115  shaft insertion hole 
               75  arm member 
               81  roller attachment plate 
               83 ,  85  roller attachment bracket 
               87  roller attachment hole 
               89  roller 
               91  holding member 
               93 ,  107  coupling bracket 
               95  chuck attachment member 
               101  chuck member 
               103 ,  105  metal plate 
               106  slit 
               108  peeling and nipping member 
               111 ,  113  plate 
               117  shaft 
               125  chuck mechanism 
               127  magazine