Patent Description:
A weld tip remover is a device of a weld tip exchanger, which removes a used weld tip before a new weld tip is combined with a shank.

Korean Patent Publication <CIT>) discloses an example of a weld tip remover of a weld tip exchanger. Document <CIT> discloses a weld tip remover comprising: a cylindrical tubular case a rotating plate axially rotatably mounted inside the cylindrical tubular case defining a tip receiving hole formed through an inner circumferential surface thereof; and a hinge bar having one end hinged to a translational actuator, a body portion hinged to one side of the rotating plate, and another end at which a driving jaw exposed to one side of an inner circumferential surface of the rotating plate is provided.

Therefore, the present invention has been made in view of the above problems, and it is an object of the invention to provide a weld tip remover for improving work efficient for removing a weld tip from a shank and preventing the shank and the weld tip from being bent during a weld tip removal process.

In accordance with the invention, the above and other objects can be accomplished by the provision of a weld tip remover according to a first embodiment including a cylindrical tubular case with an inclined guide groove formed therein along a circumference of a tube wall, a rotating plate axially rotatably mounted inside the cylindrical tubular case by a guide bar provided on an outer circumferential surface thereof and inserted into the inclined guide groove, and defining a tip receiving hole formed through an inner circumferential surface thereof, and a hinge bar having one end hinged to a translational actuator, a body portion hinged to one side of the rotating plate, and another end at which a driving jaw exposed to one side of an inner circumferential surface of the rotating plate is provided.

In a weld tip remover according to a second embodiment, a first weld tip remover (first device) and a second weld tip remover (second device) may overlap in an axial direction, an inclined guide groove of the first device and an inclined guide groove of the second device may be inclined in opposite directions, and one end of a hinge bar of the first device and one end of a hinge bar of the second device may be hinged to the same translational actuator.

In a weld tip remover according to a third embodiment, a first weld tip remover (first device) and a second weld tip remover (second device) may be arranged side by side in a perpendicular direction to an axial direction, an inclined guide groove of the first device and an inclined guide groove of the second device may be inclined in opposite directions, and one end of a hinge bar of the first device and one end of a hinge bar of the second device may be hinged to the same translational actuator.

The weld tip remover according to the first to third embodiments may further include a block piece driven by rotation of the rotating plate and blocking at least a portion of an edge of the tip receiving hole at one end in an axial direction of the cylindrical tubular case.

In the weld tip remover according to the first to third embodiments, the inclined guide groove may include a first region parallel to a circumference direction of the cylindrical tubular case and a second region inclined with respect to the circumference direction of the cylindrical tubular case.

The above and other objects, features and other advantages of the invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:.

The invention will now be described more fully with reference to the accompanying drawings, in which exemplary embodiments of the invention are shown. The invention may, however, be embodied in many different forms and should not be construed as being limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the invention to those skilled in the art. Like reference numerals in the drawings denote like elements.

With reference to the drawings, weld tip removers <NUM>, <NUM>', and <NUM>' according to first to third embodiments will be described in detail.

With reference to <FIG>, the weld tip remover <NUM> according to the first embodiment (hereinafter referred to as 'the weld tip remover <NUM>') will be described in detail.

<FIG> is a perspective view of the weld tip remover <NUM>. <FIG> is an exploded view of the weld tip remover <NUM>. <FIG> is a cross-sectional view of a use example of the weld tip remover <NUM>. <FIG> is a perspective view of a use example of the weld tip remover <NUM>.

Referring to <FIG> and <FIG>, the weld tip remover <NUM> includes a cylindrical tubular case <NUM>, a rotating plate <NUM>, and a hinge bar <NUM>.

The cylindrical tubular case <NUM> has a certain height, and an inclined guide groove <NUM> is formed along a circumference of a tube wall 110a.

The inclined guide groove <NUM> is formed obliquely along the circumference of the tube wall 110a. Here, the meaning of 'inclined' does not mean that a tangent line at all points in an entire section from a start point to an end point is inclined, but means that a straight line connecting the start point and the end point is inclined. In detail, the inclined guide groove <NUM> may include a first region 111a that extends in parallel to the circumference of the tube wall 110a and a second region 111b that extends from the first region 111a to be inclined with respect to the circumference of the tube wall 110a.

The rotating plate <NUM> is provided on an inner circumferential surface of the cylindrical tubular case <NUM> and includes a guide bar <NUM> and a tip receiving hole <NUM>.

A side groove <NUM> accommodating one end of the guide bar <NUM> may be formed on an outer circumferential surface of the rotating plate <NUM>.

One end of the guide bar <NUM> is accommodated in the side groove <NUM> of the rotating plate <NUM>, and the other end is accommodated in the inclined guide groove <NUM>. Thus, the rotating plate <NUM> is rotatably coupled inside the cylindrical tubular case <NUM>.

Although the inclined guide groove <NUM> is shown as being formed through the tube wall 110a according to an embodiment, the inclined guide groove <NUM> may be a groove that does not penetrate an inner circumferential surface of the cylindrical tubular case <NUM>, and the guide bar <NUM> may be a ball plunger that is installed on an outer circumferential surface of the rotating plate <NUM> and is elastically deformed in and out of a radial direction of the rotating plate <NUM>.

The tip receiving hole <NUM> is formed through the center of the rotating plate <NUM> such that an inner circumferential surface of the rotating plate <NUM> defines the tip receiving hole <NUM>.

The rotating plate <NUM> may include a fixed jaw <NUM> exposed inside the tip receiving hole <NUM>. The fixed jaw <NUM> fixes a weld tip T together with a driving jaw <NUM> to be described later.

The hinge bar <NUM> has one end hinged to a translational actuator <NUM> and a body portion hinged to one side of the rotating plate <NUM>.

The driving jaw <NUM> exposed to one side of the inner circumferential surface of the rotating plate <NUM> is provided at the other end of the hinge bar <NUM>.

As the body portion of the hinge bar <NUM> is rotated at a predetermined angle by driving of the translational actuator <NUM>, the driving jaw <NUM> protrudes toward the center of the tip receiving hole <NUM>.

With reference to <FIG>, a process of removing the weld tip T by the weld tip remover <NUM> will be described in detail.

In an initial state of the weld tip remover <NUM>, the guide bar <NUM> is located at an end of the first region 111a of the inclined guide groove <NUM>. In detail, the guide bar <NUM> is located on an opposite side to a portion in which the first region 111a and the second region 111b are connected to each other.

When the weld tip T is inserted into the tip receiving hole <NUM>, the translational actuator <NUM> is driven.

In the weld tip remover <NUM>, when the translational actuator <NUM> is driven, the hinge bar <NUM> rotates and the driving jaw <NUM> at the other end of the hinge bar <NUM> protrudes toward the center of the tip receiving hole <NUM>. In this case, the driving jaw <NUM> fixes the weld tip T together with the fixed jaw <NUM>.

When the hinge bar <NUM> rotates to an extent that the driving jaw <NUM> fixes the weld tip T together with the fixed jaw <NUM>, the hinge bar <NUM> comes into contact with a flange <NUM> provided on the rotating plate <NUM>, and thus rotation of the hinge bar <NUM> relative to the rotating plate <NUM> is stopped.

Then, rotation of the hinge bar <NUM> by the translational actuator <NUM> rotates the rotating plate <NUM> in the cylindrical tubular case <NUM>.

Although the case in which rotation of the hinge bar <NUM> with respect to the rotating plate <NUM> is stopped by the flange <NUM> has been described according to an embodiment, the hinge bar <NUM> may rotate to the extent that the driving jaw <NUM> fixes the weld tip T together with the fixed jaw <NUM> without the flange <NUM>, and then as the fixed jaw <NUM> rotates together with the hinge bar <NUM>, the rotating plate <NUM> integrated with the fixed jaw <NUM> may also rotate together.

In this case, the guide bar <NUM> of the rotating plate <NUM> is moved in the order of the first region 111a and the second region 111b in the inclined guide groove <NUM>. In detail, the first region 111a extends parallel to a circumference of the tube wall 110a, the rotating plate <NUM> rotates along the guide bar <NUM> without changing a height thereof. Accordingly, the driving jaw <NUM> fixes the weld tip T together with the fixed jaw <NUM>.

Then, the second region 111b extends obliquely to the circumference of the tube wall 110a, the rotating plate <NUM> rotates the guide bar <NUM> in a circumference direction of the cylindrical tubular case <NUM> and simultaneously is moved in an axial direction. Accordingly, the weld tip T moves together with the rotating plate <NUM> and is removed from a shank S. That is, while the rotating plate <NUM> rotates along the guide bar <NUM> without changing the height, the driving jaw <NUM> grips the weld tip T inserted into the shank S, and then while the rotating plate <NUM> moves in the axial direction, the weld tip T is completely removed from the shank S. Accordingly, the weld tip remover <NUM> rotates both sides of the weld tip T while fixing the weld tip T, and thus the shank S and the weld tip T may not be bent and the weld tip T may be removed from the shank S.

The weld tip remover <NUM> may further include a ball plunger <NUM> disposed in the tip receiving hole <NUM>, and the ball plunger <NUM> pushes the weld tip T out of the tip receiving hole <NUM>, and thus the weld tip T may be induced to smoothly move downward.

Referring to <FIG>, the weld tip remover <NUM> may include a first cover <NUM>, a second cover <NUM>, and a block piece <NUM> that is inserted between the weld tip T and the shank S when the weld tip T is inserted into the tip receiving hole <NUM>.

The first cover <NUM> may be disposed above the cylindrical tubular case <NUM> to cover an upper surface of the cylindrical tubular case <NUM>. The first cover <NUM> may include a first block piece receiver <NUM> that accommodates a lower portion of the block piece <NUM> and provides a path through which the block piece <NUM> is withdrawn towards the tip receiving hole <NUM>.

The second cover <NUM> may be disposed above the first cover <NUM> to cover an upper surface of the first cover <NUM>. The second cover <NUM> may include a second block piece receiver <NUM> that accommodates an upper portion of the block piece <NUM> and provides a path through which the block piece <NUM> is withdrawn towards the tip receiving hole <NUM>.

The block piece <NUM> may be disposed between the first block piece receiver <NUM> of the first cover <NUM> and the second block piece receiver <NUM> of the second cover <NUM> and may block at least a part of an edge of the tip receiving hole <NUM> when the block piece <NUM> is withdrawn toward the tip receiving hole <NUM>.

The weld tip remover <NUM> may include a rod <NUM> such that power is transferred to the block piece <NUM> from rotation of the rotating plate <NUM>.

The rod <NUM> is disposed in a manner of successively passing through the rotating plate <NUM>, the first cover <NUM>, and the block piece <NUM>.

A rod guide groove <NUM> is formed through the rotating plate <NUM> in an axial direction of the rotating plate <NUM>. In detail, the rod guide groove <NUM> is obliquely formed through the center of the rotating plate <NUM> to move the rod <NUM> forward or backward.

In the first cover <NUM>, a hole communicates with the rod guide groove <NUM> in the axial direction and is formed a long way through the rotating plate <NUM> in a radial direction thereof.

A rod receiving hole <NUM> communicating with the rod guide groove <NUM> and the hole of the first cover <NUM> is formed in the block piece <NUM>. An end of the rod <NUM> is received in the rod receiving hole <NUM>.

With reference to <FIG>, an operation process of the block piece <NUM> of the weld tip remover <NUM> will be described in detail.

Referring to <FIG>, when the translational actuator <NUM> is driven, the hinge bar <NUM> comes into contact with one side of the tip receiving hole <NUM> of the rotating plate <NUM>, and thus the rotating plate <NUM> rotates in the cylindrical tubular case <NUM>.

When the rotating plate <NUM> is rotated, the position of the rod guide groove <NUM> is changed, and the rod <NUM> is moved toward the tip receiving hole <NUM> along the rod guide groove <NUM>.

The rod <NUM> is connected to the block piece <NUM>, and thus when the block piece <NUM> is withdrawn toward the tip receiving hole <NUM> according to the position of the rod <NUM> and is inserted between the weld tip T and the shank S to remove the weld tip T in the axial direction, the shank S is prevented from moving in the axial direction. Similarly, when force is applied to the block piece <NUM> in a direction away from the tip receiving hole <NUM>, the block piece <NUM> needs to be moved along the rod guide groove <NUM>, and thus a direct load on the translational actuator <NUM> is reduced.

With reference to <FIG>, the weld tip remover <NUM>' according to a second embodiment (hereinafter referred to as 'the weld tip remover <NUM>") will be described in detail. However, 'a cylindrical tubular case <NUM>', a tube wall 110a', an inclined guide groove <NUM>', a first region 111a', a second region 111b', a rotating plate <NUM>', a side groove <NUM>', a guide bar <NUM>', a tip receiving hole <NUM>', a fixed jaw <NUM>', a rod guide groove <NUM>', a rod <NUM>', a hinge bar <NUM>', a driving jaw <NUM>', a block piece <NUM>', a rod receiving hole <NUM>', a first cover <NUM>', a first block piece receiver <NUM>', a second cover <NUM>', and a second block piece receiver <NUM>" has the same coupling structure as the aforementioned 'the cylindrical tubular case <NUM>, the tube wall 110a, the inclined guide groove <NUM>, the first region 111a, the second region 111b, the rotating plate <NUM>, the side groove <NUM>, the guide bar <NUM>, the tip receiving hole <NUM>, the fixed jaw <NUM>, the rod guide groove <NUM>, the rod <NUM>, the hinge bar <NUM>, the driving jaw <NUM>, the block piece <NUM>, the rod receiving hole <NUM>, the first cover <NUM>, the first block piece receiver <NUM>, the second cover <NUM>, and a second block piece receiver <NUM>' and a coupling direction is changed up and down, and thus a description of the shape and coupling relationship will be omitted.

<FIG> is a perspective view of the weld tip remover <NUM>'. <FIG> is an exploded view of the weld tip remover <NUM>'. <FIG> is a cross-sectional view of a use example of the weld tip remover <NUM>'.

Referring to <FIG>, the weld tip remover <NUM>' may move the hinge bars <NUM> and <NUM>', the rotating plates <NUM> and <NUM>', and the block pieces <NUM> and <NUM>' by using one translational actuator <NUM> and remove the weld tip T inserted from above and the weld tip T inserted from below.

Referring to <FIG>, the cylindrical tubular cases <NUM> and <NUM>' overlap each other, the inclined guide groove <NUM> of the cylindrical tubular case <NUM> located on an upper side is inclined downward, and the inclined guide groove <NUM>' of the cylindrical tubular case <NUM>' located on a lower side is disposed inclined upward. In detail, the inclined guide groove <NUM>' of the cylindrical tubular case <NUM>' located at the lower side may include the first region 111a' that extends in a circumference direction of the tube wall 110a' and the second region 111b' that extends upward based on an axial direction of the cylindrical tubular case <NUM>'. For reference, in a state in which the driving jaws <NUM> and <NUM>' are in contact with the weld tip T, the rotating plates <NUM> and <NUM>' are rotated by the hinge bars <NUM> and <NUM>', but the rotating plate <NUM> disposed at the upper side is moved downward based on the axial direction of the cylindrical tubular case <NUM>, and the rotating plate <NUM>' disposed at the lower side is moved upward based on the axial direction of the cylindrical tubular case <NUM>'.

Accordingly, to remove the weld tip T from the weld tip remover <NUM>', the weld tip T that descends may be inserted into the tip receiving hole <NUM> located at the upper side, and the weld tip T that ascends may be inserted into the tip receiving hole <NUM>' located at the lower side.

The weld tip remover <NUM>' may remove the ascending and descending weld tip T after sequentially accommodating the ascending and descending weld tip T. However, the order of removing the ascending and descending weld tip T using the weld tip remover <NUM>' is not limited.

Referring to <FIG>, a process of removing the weld tip T of 'the cylindrical tubular case <NUM>, the tube wall 110a, the inclined guide groove <NUM>, the first region 111a, the second region 111b, the rotating plate <NUM>, the side groove <NUM>, the guide bar <NUM>, the tip receiving hole <NUM>, the fixed jaw <NUM>, the hinge bar <NUM>, and the driving jaw <NUM>' located at the upper side is the same as the above description, and thus a description thereof is omitted, and a process of removing the weld tip T of 'the cylindrical tubular case <NUM>', the tube wall 110a', the inclined guide groove <NUM>', the first region 111a', the second region 111b', the rotating plate <NUM>', the side groove <NUM>', the guide bar <NUM>', the tip receiving hole <NUM>', the fixed jaw <NUM>', the hinge bar <NUM>', and the driving jaw <NUM>" located at the lower side will be described.

When the weld tip T is inserted into the tip receiving hole <NUM>', the translational actuator <NUM> is driven.

In the weld tip remover <NUM>', when the translational actuator <NUM> is driven, the hinge bar <NUM>' rotates based on one side of the rotating plate <NUM>', and the driving jaw <NUM>' rotates toward the center of the tip receiving hole <NUM>'. In this case, the driving jaw <NUM>' may fix the weld tip T together with the fixed jaw <NUM>', and eventually the driving jaw <NUM>' may not protrude toward the center of the rotating plate <NUM>'.

With the driving jaw <NUM>' in contact with the weld tip T, the hinge bar <NUM>' rotates the rotating plate <NUM>' in the cylindrical tubular case <NUM>'. In this case, the guide bar <NUM>' of the rotating plate <NUM>' moves in the order of the first region 111a' and the second region 111b' in the inclined guide groove <NUM>'. In detail, the first region 111a' extends parallel to the circumference of the tube wall 110a', and thus the rotating plate <NUM>' rotates along the guide bar <NUM>' without changing the height thereof. Accordingly, the driving jaw <NUM> fixes the weld tip T together with the fixed jaw <NUM>.

Then, the second region 111b' extends obliquely upward from the circumference of the tube wall 110a', and thus the rotating plates <NUM> and <NUM>' rotate the guide bar <NUM>' in the circumference direction of the cylindrical tubular case <NUM>' and at the same time rotate the cylindrical tubular case <NUM>' is moved upward relative to the axial direction thereof. As a result, the weld tip T moves upward based on the shank S and is separated from the shank S.

The weld tip remover <NUM> may further include the ball plunger <NUM> disposed in the tip receiving hole <NUM>, and the ball plunger <NUM> pushes the weld tip T out of the tip receiving hole <NUM>, and thus the weld tip T may be induced to smoothly move downward.

Referring to <FIG> and <FIG>, a process of operating the block pieces <NUM> and <NUM>' of 'the cylindrical tubular case <NUM>, the tube wall 110a, the inclined guide groove <NUM>, the first region 111a, the second region 111b, the rotating plate <NUM>, the side groove <NUM>, the guide bar <NUM>, the tip receiving hole <NUM>, the fixed jaw <NUM>, the rod guide groove <NUM>, the rod <NUM>, the hinge bar <NUM>, the driving jaw <NUM>, the block piece <NUM>, the rod receiving hole <NUM>, the first cover <NUM>, the first block piece receiver <NUM>, the second cover <NUM>, and the second block piece receiver <NUM>' located at the upper side is the same as the above description, and thus a detailed description thereof is omitted, and a process of operating the block piece <NUM>' of 'the cylindrical tubular case <NUM>', the tube wall 110a' the inclined guide groove <NUM>', the first region 111a', the second region 111b', the rotating plate <NUM>', the side groove <NUM>', the guide bar <NUM>', the tip receiving hole <NUM>', the fixed jaw <NUM>', the rod guide groove <NUM>', the rod <NUM>, the hinge bar <NUM>', the driving jaw <NUM>', the block piece <NUM>', the rod receiving hole <NUM>', the first cover <NUM>', the first block piece receiver <NUM>', the second cover <NUM>', and the second block piece receiver <NUM>" located at the lower side will be described.

Referring to <FIG> and <FIG>, when the weld tip T is inserted into the tip receiving hole <NUM>', the translational actuator <NUM> is driven.

When the rotating plate <NUM>' rotates, the position of the rod guide groove <NUM>' is changed, and the rod <NUM> is moved toward the tip receiving hole <NUM>' along the rod guide groove <NUM>'.

The rod <NUM> is connected to the block piece <NUM>', and thus when the block piece <NUM>' is withdrawn toward the tip receiving hole <NUM>' depending on the position of the rod <NUM>, and is inserted between the weld tip T and the shank S to remove the weld tip T in an axial direction, the shank S may not move in the axial direction.

With reference to <FIG>, <FIG>, and <FIG>, the weld tip remover <NUM>" according to a third embodiment (hereinafter referred to as 'the weld tip remover <NUM>‴) will be described in detail. However, 'the cylindrical tubular cases <NUM> and <NUM>', the tube walls 110a and 110a', the inclined guide grooves <NUM> and <NUM>', the first regions 111a and 111a', the second regions 111b and 111b', the rotating plates <NUM> and <NUM>', the side grooves <NUM> and <NUM>, the guide bars <NUM> and <NUM>', the tip receiving holes <NUM> and <NUM>', the fixed jaws <NUM> and <NUM>', the rod guide grooves <NUM> and <NUM>', the rods <NUM> and <NUM>', the hinge bars <NUM> and <NUM>', the driving jaws <NUM> and <NUM>', the block pieces <NUM> and <NUM>', the rod receiving holes <NUM> and <NUM>', the first covers <NUM> and <NUM>', the first block piece receivers <NUM> and <NUM>', the second covers <NUM> and <NUM>', and the second block piece receivers <NUM> and <NUM>' of the weld tip remover <NUM>" has the same arrangement and coupling structure as 'the cylindrical tubular cases <NUM> and <NUM>', the tube walls 110a and 110a', the inclined guide grooves <NUM> and <NUM>', the first regions 111a and 111a', the second regions 111b and 111b', the rotating plates <NUM> and <NUM>', the side grooves <NUM> and <NUM>, the guide bars <NUM> and <NUM>', the tip receiving holes <NUM> and <NUM>', the fixed jaws <NUM> and <NUM>', the rod guide grooves <NUM> and <NUM>', the rods <NUM> and <NUM>', the hinge bars <NUM> and <NUM>', the driving jaws <NUM> and <NUM>', the block pieces <NUM> and <NUM>', the rod receiving holes <NUM> and <NUM>', the first covers <NUM> and <NUM>', the first block piece receivers <NUM> and <NUM>', the second covers <NUM> and <NUM>', and the second block piece receivers <NUM> and <NUM>' of the aforementioned weld tip remover <NUM>', and thus a detailed description thereof will be omitted.

<FIG> is a perspective view of the weld tip remover <NUM>". <FIG> is an exploded view of the weld tip remover <NUM>".

Referring to <FIG> and <FIG>, the weld tip remover <NUM>" may remove the weld tip T inserted into the tip receiving hole <NUM> located at a front side and the weld tip T inserted into the tip receiving hole <NUM>' located at a rear side by moving the hinge bars <NUM> and <NUM>', the rotating plates <NUM> and <NUM>', and the block pieces <NUM> and <NUM>' using one translational actuator <NUM>.

Referring to <FIG>, the cylindrical tubular cases <NUM> and <NUM>' are arranged side by side on the front and rear sides, the inclined guide groove <NUM> of the cylindrical tubular case <NUM> located on the front side is inclined downward, and the inclined guide groove <NUM>' of the cylindrical tubular case <NUM>' located at the rear side is inclined upward. In detail, the inclined guide groove <NUM> of the cylindrical tubular case <NUM> located at the front side may include the first region 111a extending in a circumference of the tube wall 110a and the second region 111b extending downward based on an axial direction of the cylindrical tubular case <NUM>. The inclined guide groove <NUM>' of the cylindrical tubular case <NUM>' located at the rear side may include the first region 111a' extending in a circumference of the tube wall 110a' and the second region 111b' extending upward based on an axial direction of the cylindrical tubular case <NUM>'.

For reference, in a state in which each of the driving jaws <NUM> and <NUM>' is in contact with the weld tip T, each of the two rotating plates <NUM> and <NUM>' is rotated in a direction relative to an axis by each of the hinge bars <NUM> and <NUM>', but the rotating plate <NUM> disposed on the front side is moved downward, and the rotating plate <NUM>' disposed on the rear side is moved upward.

Thus, the descending weld tip T may be inserted into the tip receiving hole <NUM> located at the front side, and the ascending weld tip T may be inserted into the tip receiving hole <NUM>' located at the rear side.

Referring to <FIG> and <FIG>, the weld tip remover <NUM>" may simultaneously accommodate and remove the ascending and descending weld tips T. However, when the ascending and descending weld tips T are sequentially accommodated in any one of the tip receiving holes <NUM> and <NUM>', the order of removing the ascending and descending weld tips T using the weld tip remover <NUM>" is not limited.

Referring to <FIG>, <FIG>, and <FIG>, a process of removing the weld tip T of 'the cylindrical tubular case <NUM>, the inclined guide groove <NUM>, the first region 111a, the second region 111b, the rotating plate <NUM>, the side groove <NUM>, the guide bar <NUM>, the tip receiving hole <NUM>, the fixed jaw <NUM>, the hinge bar <NUM>, and the driving jaw <NUM>' located at the front side is the same as the process of removing the weld tip T of 'the cylindrical tubular case <NUM>, the inclined guide groove <NUM>, the first region 111a, the second region 111b, the rotating plate <NUM>, the side groove <NUM>, the guide bar <NUM>, the tip receiving hole <NUM>, the fixed jaw <NUM>, the hinge bar <NUM>, and the driving jaw <NUM>' located at the upper side of the weld tip removers <NUM> and <NUM>' according to the first or second embodiment.

A process of removing the weld tip T of 'the cylindrical tubular case <NUM>', the inclined guide groove <NUM>', the first region 111a', the second region 111b', the rotating plate <NUM>', the side groove <NUM>', the guide bar <NUM>', the tip receiving hole <NUM>', the fixed jaw <NUM>', the hinge bar <NUM>', and the driving jaw <NUM>" located at the rear side is the same as the process of removing the weld tip T of 'the cylindrical tubular case <NUM>', the inclined guide groove <NUM>', the first region 111a', the second region 111b', the rotating plate <NUM>', the side groove <NUM>', the guide bar <NUM>', the tip receiving hole <NUM>', the fixed jaw <NUM>', the hinge bar <NUM>', the driving jaw <NUM>" located at the lower side of the weld tip remover <NUM>' according to the second embodiment.

Referring to <FIG>, <FIG>, and <FIG>, a process of operating the block piece <NUM> of 'the cylindrical tubular case <NUM>, the inclined guide groove <NUM>, the first region 111a, the second region 111b, the rotating plate <NUM>, the side groove <NUM>, the guide bar <NUM>, the tip receiving hole <NUM>, the fixed jaw <NUM>, the hinge bar <NUM>, and the driving jaw <NUM>' located at the front side is the same as a process of operating the block piece <NUM> of 'the cylindrical tubular case <NUM>, the inclined guide groove <NUM>, the first region 111a, the second region 111b, the rotating plate <NUM>, the side groove <NUM>, the guide bar <NUM>, the tip receiving hole <NUM>, the fixed jaw <NUM>, the hinge bar <NUM>, and the driving jaw <NUM>' located at the upper side of the weld tip removers <NUM> and <NUM>' according to the first or second embodiment.

A process of operating the block piece <NUM>' of 'the cylindrical tubular case <NUM>', the inclined guide groove <NUM>', the first region 111a', the second region 111b', the rotating plate <NUM>', the side groove <NUM>', the guide bar <NUM>', the tip receiving hole <NUM>', the fixed jaw <NUM>', the hinge bar <NUM>', and the driving jaw <NUM>" located at the rear side is the same as the process of operating the block piece <NUM>' of 'the cylindrical tubular case <NUM>', the inclined guide groove <NUM>', the first region 111a', the second region 111b', the rotating plate <NUM>', the side groove <NUM>', the guide bar <NUM>', the tip receiving hole <NUM>', the fixed jaw <NUM>', the hinge bar <NUM>', and the driving jaw <NUM>" located at the lower side of the weld tip remover <NUM>" according to the second embodiment.

The weld tip remover <NUM>" may remove the weld tip T through the cylindrical tubular case <NUM> in which one of the two spot welders is disposed at the front side and components combined therewith, and remove the weld tip T through the cylindrical tubular case <NUM>' in which the other of the two spot welders is disposed at the rear side and the components combined therewith.

The weld tip remover according to an embodiment has a small number of parts and a simple structure, and thus there is no minor failure and high durability.

The weld tip remover according to an embodiment has a simple power transmission structure and excellent removal work efficiency.

As the weld tip remover according to an embodiment is configured not to apply force in a direction in which an axis of a shank and a weld tip is inclined, bending of the shank and the weld tip is prevented during a process of removing the weld tip.

Claim 1:
A weld tip remover comprising:
a cylindrical tubular case with an inclined guide groove formed therein along a circumference of a tube wall;
a rotating plate axially rotatably mounted inside the cylindrical tubular case by a guide bar provided on an outer circumferential surface thereof and inserted into the inclined guide groove, and defining a tip receiving hole formed through an inner circumferential surface thereof; and
a hinge bar having one end hinged to a translational actuator, a body portion hinged to one side of the rotating plate, and another end at which a driving jaw exposed to one side of an inner circumferential surface of the rotating plate is provided.