JP3153551U - Clamp for work holding jig and work holding jig provided with the same - Google Patents

Abstract

A workpiece holding jig clamping tool capable of performing plating treatment on both surfaces of a plate-like or sheet-like workpiece, and a workpiece holding jig including the same. A workpiece holding jig holding tool that is attached to a workpiece holding jig for immersing a plate-like or sheet-like workpiece W in a plating solution and can hold the workpiece W. A first holding member having a holding portion 33a that can be electrically conductive with the main body and that can be conductively contacted with one surface of the work W, and is electrically connected to the first holding member and is connected to the other surface of the work W. And a second clamping member having a clamping part 33b that can be contacted in a conductive manner. [Selection] Figure 4

Description

  The present invention relates to a work holding jig for holding a work so as to immerse the work in a plating solution in a plating process, and a work holding jig clamping tool for fixing the work to the work holding jig. About.

  Conventionally, what is shown in FIG. 7 and FIG. 8 is known as a workpiece holding jig for holding a plate-shaped or sheet-shaped workpiece during plating. The work holding jig 100 fixes a work frame 101 to a holding frame 101 that surrounds the periphery of the holding frame 101 when a plate-shaped or sheet-shaped work w (see FIG. 8) is held. The holding tool 110 is provided.

  The holding frame 101 is formed of a conductive material, and includes left and right vertical frame members 102, an upper horizontal frame member 103, and a lower horizontal frame member 104. The holding tool 110 includes an upper holding tool 111 provided at the lower portion of the upper horizontal frame member 103 and a lower holding tool 112 provided at the lower horizontal frame member 104.

  The upper holding tool 111 has a SUS plate member 113 spanned between the left and right vertical frame members 102 and a work clamp 115 provided on the horizontal shaft 114 below the upper horizontal frame member 103. The work clamp 115 is rotatably supported by the horizontal shaft 114 so that the tip end portion 115a contacts and separates from the plate member 113 by rotating about the horizontal shaft 114. A SUS-made round bar 116 coated with resin is welded to the tip of the work clamp 115, and the upper clamping device 111 has an upper end portion of the plate-like work w between the round bar 116 and the plate member 113. Is sandwiched from both sides.

  The lower clamping tool 112 includes a resin plate 117 that is stretched along the lower horizontal frame member 104 and a plate spring 119 that is provided with a resin-coated round bar 118 at the tip. The lower clamping tool 112 is configured so that the round bar 118 and the resin plate 117 are brought into contact with and separated from each other when the plate spring 119 is elastically deformed and elastically restored, whereby the lower end of the plate-like workpiece w is interposed between the round bar 118 and the resin plate 117. The part is sandwiched from both sides.

Japanese Utility Model Publication No. 07-4074

  In the workpiece holding jig 100, the upper and lower ends of the workpiece w are respectively clamped by the clamping tools 110 (the upper clamping tool 111 and the lower clamping tool 112) provided at intervals in the vertical direction, whereby the plate is placed in the holding frame 101. The workpiece w is held. In this state, the workpiece w is dipped in the plating solution together with the holding frame 101, and electricity is supplied to the workpiece holding jig 100, whereby the workpiece w immersed in the plating solution via the holding frame 101 and the upper clamping tool 111 is obtained. Electricity is supplied to the surface, and the surface of the workpiece w is plated.

  At this time, since the round bar 116 at the tip of the work clamp 115 constituting the upper clamping tool 111 is coated with resin, the surface of the workpiece w sandwiched between the upper clamping tool 111 that is in contact with the round bar 116 is in contact with the electrical surface. In other words, the electricity is supplied only to the surface in contact with the plate member 113, and therefore, only one surface of the plate-like workpiece w (the surface in contact with the plate member 113) can be plated.

  Therefore, in view of the above problems, the present invention provides a workpiece holding jig clamping tool capable of performing plating on both surfaces of a plate-like or sheet-like workpiece, and a workpiece holding jig including the same. Is an issue.

  Therefore, in order to solve the above-mentioned problems, the present invention is a work holding jig clamping tool which is attached to a work holding jig for immersing a plate-like or sheet-like work in a plating solution and can hold the work. A first holding member having a holding portion which can be electrically conductive with the main body of the workpiece holding jig and can be conductively contacted with one surface of the workpiece, and is electrically connected to the first holding member. And a second clamping member having a clamping part that can be brought into conductive contact with the other surface of the workpiece.

  By using the workpiece holding jig clamping tool configured as described above as a workpiece holding jig, electricity (electrons) supplied to the workpiece holding jig clamping tool through the main body of the workpiece holding jig can be used for each clamping part. To both sides of the plate-like or sheet-like workpiece, whereby it is possible to perform plating on both sides of the plate-like or sheet-like workpiece.

  In the holding tool for a workpiece holding jig according to the present invention, it is preferable that the first and second holding members are connected to each other via a rotating shaft so as to be relatively rotatable so that the holding portions come in contact with each other. .

  According to such a configuration, it is possible to realize a configuration in which the holding portions of the pair of holding members are in contact with and separated from each other with a simple configuration.

  The first clamping member is provided with a fixing part for attaching the first clamping member to the main body, and the clamping part of the first clamping member holds the workpiece when the workpiece is clamped. A first clamping surface that is in contact with one surface of the workpiece in a parallel state, and the clamping portion of the second clamping member bulges toward the other surface of the workpiece when the workpiece is sandwiched. It is preferable to have a second clamping surface in contact with the other surface in a curved state.

  According to this configuration, when the workpiece is sandwiched by the workpiece holding jig clamping tool, it is possible to effectively prevent the workpiece from being detached from the workpiece holding jig clamping tool and from being damaged.

  Specifically, if both the sandwiching portions of the pair of sandwiching members each have the first sandwiching surface, when the thickness of the workpiece changes, the first sandwiching surface has an angle with the sandwiched surface of the workpiece. Therefore, the clamping portion having the first clamping surface comes into contact with the workpiece at the corner portion of the first clamping surface, and the workpiece is easily damaged at the portion. Also, assuming that both sandwiching portions of the pair of sandwiching members have the second sandwiching surfaces, respectively, when the workpiece is sandwiched, both the second sandwiching surfaces are only part of the sandwiched surfaces of the workpieces. Since they are in contact with each other, a sufficient contact area with the workpiece cannot be ensured on both the second clamping surfaces, and the workpiece is easily detached from the workpiece holding jig clamping tool.

  Therefore, when the thickness of the workpiece to be sandwiched changes, the posture of the workpiece with respect to the sandwiched surface does not change. The sandwiching surface of the first sandwiching member is the first sandwiching surface, and the workpiece has a posture with respect to the sandwiched surface. By setting the holding surface of the second holding member to be changed as the second holding surface, the work at the corners of the periphery of the holding surface can be secured even if the thickness of the work changes while ensuring a sufficient contact area for holding the work. Can be prevented. Specifically, when the first clamping member is fixed to the workpiece holding jig, the posture of the clamping surface of the clamping member changes with respect to the clamped surface of the workpiece regardless of the thickness of the workpiece to be sandwiched. do not do. On the other hand, since the second clamping member rotates with respect to the first clamping member, the posture of the clamping surface with respect to the clamping surface of the workpiece changes according to the thickness of the workpiece to be sandwiched. Therefore, by setting the clamping surface of the first clamping member as the first clamping surface constituted by the plane, and the clamping surface of the second clamping member as the second clamping surface constituted by the curved surface, The entire clamping surface of 1 is brought into contact with the workpiece to secure a contact area with the workpiece, and damage to the workpiece is suppressed by the second clamping surface coming into contact with the workpiece at a curved portion instead of a corner portion. The

  Each of the first and second clamping members includes a clamping member main body provided with the clamping part at a distal end part, and each clamping part is disposed on the opposite side from the clamping member main body provided with the clamping part. It is preferable to project toward the clamping part of the clamping member and to have the first or second clamping surface at the tip.

  According to this configuration, when the workpiece is sandwiched, it is possible to prevent contact between the workpiece and a portion other than the clamping surface of each clamping member.

  It is preferable to provide a biasing means for biasing the first and second clamping members in a direction in which the clamping parts approach each other.

  In this way, the pair of clamping members are urged by the urging means, so that even if the thickness of the workpiece changes, the workpiece can be suitably sandwiched between the both clamping portions by the urging force. Also, the workpiece can be easily attached to and detached from the workpiece holding jig.

  Moreover, it is preferable that the urging means is constituted by a helical spring connected to the first and second clamping members.

  Thus, by using the helical spring having various general-purpose products as the biasing means, it is possible to reduce the manufacturing cost and reduce the weight.

  It is preferable that the first and second holding members conduct electricity via at least one of the rotating shaft and the urging means.

  According to this configuration, electrical connection between the first clamping member and the second clamping member is achieved without separately providing a conductive member such as an electric wire that connects the first clamping member and the second clamping member. be able to.

  Moreover, it is preferable that the first and second holding members are each made of a conductive material.

  According to such a configuration, electrical connection between the main body of the workpiece holding jig and each clamping portion of the pair of clamping members can be more easily achieved.

  Further, in order to solve the above-mentioned problems, the present invention is a work holding jig for holding a plate-like or sheet-like work soaked in a plating solution, and a main body of the work holding jig and the main body. The workpiece holding jig clamping tool according to any one of claims 1 to 8, wherein the workpiece is fixed to the workpiece holding jig.

  According to such a configuration, the work holding jig holding tool attached to the main body of the work holding jig holds the work in a state where each holding portion is in conductive contact with both surfaces of the plate-like or sheet-like work. By fixing to, electricity can be supplied to both sides of the workpiece. Thereby, it becomes possible to perform a plating process on both surfaces of a plate-shaped or sheet-shaped workpiece.

  As described above, according to the present invention, it is possible to provide a workpiece holding jig clamping tool capable of performing plating on both surfaces of a plate-like or sheet-like workpiece, and a workpiece holding jig including the workpiece holding jig.

It is a front view of the workpiece holding jig concerning this embodiment. It is AA sectional drawing of FIG. It is an expansion perspective view of the front-end | tip part in the clamping tool of the said workpiece holding jig. (A) in the said clamping tool is an enlarged side view of the front-end | tip part of the state which pinched | interposed the thin workpiece | work, (b) is an enlarged side view of the front-end | tip part of the state which pinched | interposed the thick work. It is a center longitudinal cross-sectional view of the lower clamp in the said workpiece holding jig. In the clamping device, (a) is an enlarged side view of a tip portion in a state where a thin workpiece is sandwiched between clamping portions in which both clamping surfaces are flat, and (b) is a thick workpiece between the clamping portions. It is an expanded side view of the front-end | tip part of the clamped state, (c) is an enlarged side view of the front-end | tip part of the state which pinched | interposed the workpiece | work between the clamping parts comprised by the curved surface so that both clamping surfaces may mutually bulge. It is. It is a front view of the conventional workpiece holding jig. It is BB sectional drawing of FIG.

  Hereinafter, an embodiment of the present invention will be described with reference to the accompanying drawings.

  As shown in FIG. 1 and FIG. 2, the workpiece holding jig 10 according to the present embodiment immerses the workpiece W in a plating solution when the plate-like or sheet-like workpiece W is plated. To hold for. The work holding jig 10 includes a work holding frame (main body) 25, and is detachably connected to a traveling unit 12 that travels along the transport track 11 via a suspension member 13. That is, when the workpiece W is attached to or detached from the workpiece holding jig 10, the workpiece holding jig 10 is removed from the traveling unit 12, and the workpiece W is attached to or detached from the workpiece holding jig 10 in that state, and then the workpiece holding is performed. The jig 10 can be connected to the traveling unit 12.

  The transport track 11 includes a travel rail R, a transport chain 14 that moves around by driving means (not shown), and a power supply rail 15 connected to the cathode side of the DC power source. Although not shown in the drawings, the transport track 11 is laid so as to go from the work loading station to the top of the pretreatment tank, the plating tank, and the washing tank tower, to return to the work loading station through the work unloading station. Yes.

  The traveling rail R and the power supply rail 15 are arranged in parallel to each other and are supported by the track base 16 via connecting members, respectively. The track base 16 is formed in a U-shaped cross section, and chain guides 16a are provided on the upper surfaces of the upper and lower walls. The conveyor chain 14 that moves in a circular manner has an upper portion guided by the chain guide 16a on the upper wall and a lower portion guided by the chain guide 16a on the lower wall.

  The traveling unit 12 includes a traveling unit main body 17 slidably disposed along the upper end surface of the traveling rail R, a sprocket gear 18 supported by a support shaft 18 a on the upper end of the traveling unit 12, and the traveling unit main body 17. A pair of left and right upper guide wheels 19 a provided at the upper end portion, a pair of left and right lower guide wheels 19 b provided at the lower end portion of the traveling portion main body 17, and a current collecting slide contact that contacts the power supply rail 15 from above. 20.

  The work holding frame 25 extends in parallel or substantially in parallel with the upper horizontal frame member 26 at a position spaced apart from the upper horizontal frame member 26 extending horizontally or substantially horizontally to the left and right. The lower horizontal frame member 27, a pair of vertical frame members 28 that connect the left and right ends of both horizontal frame members (upper horizontal frame member and lower horizontal frame member) 26, 27, and the workpiece holding frame 25 And a workpiece holding jig clamping tool (hereinafter, also simply referred to as “clamping tool”) 30 for fixing the workpiece W. The work holding frame 25 is formed in a vertically long rectangular shape by the upper and lower horizontal frame members 26 and 27 and the left and right vertical frame members 28.

  The upper horizontal frame member 26 and the left and right vertical frame members 28 are made of conductive metal (for example, copper, stainless steel, etc.), and the lower horizontal frame member 27 is made of a non-conductive material (for example, Hard vinyl chloride resin (CVPC) etc.).

  The clamping tool 30 is respectively arranged on the upper part and the lower part of the work holding frame 25. Hereinafter, the clamping tool 30 disposed on the upper part of the work holding frame 25 is referred to as an upper clamp 30a, and the clamping tool 30 disposed on the lower part is referred to as a lower clamp 30b. The upper clamp 30a is provided on the upper lateral frame member 26, and clamps (holds) the upper end of the workpiece W to fix the workpiece W and to supply power to the workpiece W. In the present embodiment, the upper horizontal frame member 26 is provided with three upper clamps 30a. More specifically, the upper clamp 30a extends from the upper lateral frame member 26 toward the lower lateral frame member 27 at the center and both ends in the lateral width direction (the lateral direction in FIG. 1) of the upper lateral frame member 26. Each is provided so that the side protrudes. Each upper clamp 30a is connected to the current collector sliding contact 20 of the traveling unit 12 through the work holding frame 25 (specifically, the upper horizontal frame member 26) and the suspension member 13 so as to be conductive.

  The upper clamp 30a includes a pair of clamp levers (clamping members) including a first clamp lever (first clamping member) 31a and a second clamp lever (second clamping member) 31b. The first clamp lever 31a has a holding portion 33a that can be electrically conductive with the workpiece holding frame 25 and can be electrically conductively contacted with one surface of the workpiece W. On the other hand, the second clamp lever 31b is connected to the first clamp lever 31a in a conductive manner, and has a holding portion 33b that can contact the other surface of the workpiece W in a conductive manner.

  Specifically, each clamp lever 31a, 31b includes a clamp lever main body (clamping member main body) 32a, 32b, a clamping portion 33a, 33b provided at the tip of the clamp lever main body 32a, 32b, a clamp lever main body 32a, It has connection part 34a, 34b provided in the center part of 32b, respectively. The pair of clamp levers 31a and 31b are connected by connecting the connecting portions 34a and 34b to each other by the rotating shaft 35 so as to be rotatable relative to each other so that the sandwiching portions 33a and 33b come in contact with each other. By being connected in this way, the sandwiching portions 33 a and 33 b are brought into contact with and separated from each other along a plane orthogonal to the rotation shaft 35.

  The pair of clamp levers 31a and 31b is provided with a biasing means 36 that biases the first and second clamp levers 31a and 31b in a direction in which the holding portions 33a and 33b approach each other. In this embodiment, the biasing means 36 is constituted by a helical spring that connects the rear end portion of the first clamp lever 31a and the rear end portion of the second clamp lever 31b. The biasing means 36 is not limited to the helical spring, and may be constituted by another elastic body such as a torsion spring.

  The first clamp lever 31a has a fixing portion 37 for fixing the first clamp lever 31a to the upper lateral frame member 26 of the work holding frame 25 in a conductive state. The fixing portion 37 is provided on the rear end portion of the first clamp lever 31a, specifically on the rear end side with respect to the connecting portion 34a. In the present embodiment, the fixing portion 37 is screwed with a screw hole, and the fixing portion 37 is fixed to the upper horizontal frame member 26 of the work holding frame 25 by the fixing bolt 38, whereby the first clamp lever 31a, That is, the upper clamp 30a is attached to the upper lateral frame member 26 in a conductive state. The upper clamp 30a only needs to be attached in a state where at least the first clamp lever main body 32a and the sandwiching portions 33a and 33b can conduct with the upper lateral frame member 26.

  The pair of clamp levers 31a and 31b are each formed of a conductive member. The pair of clamp levers 31 a and 31 b are configured to conduct through the rotating shaft 35 and the urging means 36. Therefore, the clamping portions 33a and 33b provided at the distal ends of the clamp levers 31a and 31b and the fixing portion 37 of the first clamp lever 31a can be electrically conductive. In the present embodiment, the pair of clamp levers 31a and 31b are configured to conduct through the rotating shaft 35 and the urging means 36. However, the present invention is not limited to this, and the rotating shaft 35 or the urging means is not limited thereto. It may be configured to conduct through at least one of 36. That is, one of the rotating shaft 35 or the urging means 36 may be composed of a non-conductive member. Alternatively, the first clamp lever 31a and the second clamp lever 31b may be configured to conduct by separately providing a conductive member such as an electric wire.

  As shown in FIG. 3, the clamping portions 33 a and 33 b provided on the first and second clamp levers 31 a and 31 b are first to second clamp lever bodies 32 a (or 32 b). It protrudes toward the clamping part 33b (or 33a) of the second clamp lever 31b (or the first clamp lever 31a), and has a clamping surface 39a (or 39b) at its tip. The sandwiching surface 39a (or 39b) is a surface that contacts the sandwiched surface of the workpiece W when the workpiece W is sandwiched between the sandwiching portions 33a and 33b. Specifically, the clamping surface (first clamping surface) 39a of the clamping part 33a of the first clamp lever 31a sandwiches the workpiece W as shown in FIGS. 4 (a) and 4 (b). Sometimes, it comes into contact with one surface of the workpiece W in a parallel state. The clamping surface (second clamping surface) 39b of the clamping part 33b of the second clamp lever 31b is curved in such a manner that it bulges toward the other surface of the workpiece W when the workpiece W is sandwiched. It touches the face.

  Specifically, the clamping portion 33a of the first clamp lever 31a is located at the tip of the first clamp lever main body 32a from the first clamp lever main body 32a to the counterpart clamp lever (ie, the second clamp lever). Lever) 31b protrudes toward the clamping portion 33b of the lever 31b and extends in parallel with the rotation shaft 35. In this clamping part 33a, the surface formed on the clamping part 33b side of the second clamp lever 31b constitutes the first clamping surface 39a. On the other hand, the clamping portion 33b of the second clamp lever 31b is a clamp lever on the opposite side from the second clamp lever main body 32b (that is, the first clamp lever) at the tip of the second clamp lever main body 32b. It protrudes toward the clamping portion 33a of 31a and extends parallel to the rotation shaft 35. A surface formed on the clamping portion 33a side of the first clamp lever 31a of the clamping portion 33b constitutes a second clamping surface 39b.

  The lower clamp 30 b is provided on the lower horizontal frame member 27, sandwiches the lower end portion of the work W, fixes the work W, and supplies power to the work W. In the present embodiment, the lower horizontal frame member 27 is provided with two lower clamps 30b. Specifically, the lower clamp 30b is provided at both ends in the left-right direction (left-right direction in FIG. 1) of the lower horizontal frame member 27 so that the tip side protrudes upward from the lower horizontal frame member 27. It has been. Each lower clamp 30 b is connected to the vertical frame member 28 via the power supply plate 29 so as to be conductive.

  Hereinafter, the lower clamp 30b will be described with reference to FIG. 5 as well, but the same components as those of the upper clamp 30a will be denoted by the same reference numerals, detailed description thereof will be omitted, and only different components will be described in detail. One clamp lever (first clamp lever) 31a includes a power receiving unit 40 that is conductively connected to the work holding frame 25, and the first clamp lever 31a is connected to the work holding frame 25 (specifically, the lower side). It has a fixing part 37 for attachment to the lateral frame member 27). That is, in the upper clamp 30a, the fixing portion 37 is configured to also serve as the power receiving unit 40, but in the lower clamp 30b, the fixing unit 37 and the power receiving unit 40 are configured in different parts.

  The power receiving unit 40 is provided on the rear end side of the first clamp lever 31a, specifically, on the rear end side of the connecting portion 34a. By connecting the power feeding plate 29 to the power receiving unit 40 in a conductive manner, the work holding frame 25 and the power receiving unit 40 are electrically connected.

  The fixing portion 37 is provided on the rear end portion of the first clamp lever 31a, specifically, on the rear end side further than the power receiving portion 40. In the present embodiment, the fixing portion 37 is screwed with a screw hole, and the fixing portion 37 is fixed to the lower horizontal frame member 27 of the work holding frame 25 by the fixing bolt 38, whereby the first clamp lever 31a. That is, the lower clamp 30 b is attached to the lower horizontal frame member 27.

  Next, the work for attaching the workpiece W to the workpiece holding jig 10 will be described. In the present embodiment, the work attachment work to the work holding jig 10 is automatically performed by an automatic attachment device (not shown). Specifically, in the workpiece loading station, the upper and lower clamps 30a and 30b are opened and the workpiece W is inserted into a predetermined position in the workpiece holding frame 25, and the upper and lower ends of the workpiece W are clamped by the clamps 30a and 30b. The Specifically, in the work loading station, the rear end of the second clamp lever 31b of each of the clamps 30a and 30b is urged by the urging force of the urging means 36 (in this embodiment, the resilient force of the helical spring) by the automatic attachment device. ) Against the rear end side of the first clamp lever 31a. As a result, the distal ends of the clamps 30a and 30b are opened, that is, the distal ends of the second clamp levers 31b are separated from the distal ends of the first clamp levers 31a and the clamping portions 33a and 33b of the pair of clamp levers 31a and 31b are separated. They are separated from each other. The workpiece W is inserted by the automatic attachment device so that the upper end portion or the lower end portion of the workpiece W is positioned between the sandwiching portions 33a and 33b thus separated, and in this state, the second clamp lever 31b by the automatic attachment device is inserted. The rear edge is released. Thereby, the rear end of the second clamp lever 31b is pushed in a direction away from the rear end of the first clamp lever 31a by the biasing force of the biasing means 36, and the clamping portions 33a of the pair of clamp levers 31a and 31b 33b approaches and pinches | interposes the workpiece | work W from both sides. In this way, the workpiece W is fixed by sandwiching the upper and lower ends of the workpiece W by the clamps 30a and 30b.

  Next, the plating process for the workpiece W held by the workpiece holding jig 10 will be described. The workpiece W held by the workpiece holding jig 10 is immersed in the plating tank. When the traveling unit 12 moves along the conveyance track 11, the workpiece holding jig 10 is conveyed in the plating tank. At this time, electricity (electrons) supplied to the traveling unit 12 through the power supply rail 15 and the current collecting sliding contact 20 is supplied to the upper clamp 30a and the lower clamp through the suspension member 13, the upper horizontal frame member 26, and the vertical frame member 28. Power is supplied to 30b. This electricity is supplied to the clamping portions 33a and 33b at the tip portions of the clamp levers 31a and 31b, and is supplied to both surfaces of the workpiece W from the clamping portions 33a and 33b via the clamping surfaces 39a and 39b. Thereby, a plating layer (plating film) is formed on both surfaces of the workpiece W.

  As described above, in the present embodiment, the holding tool 30 (upper clamp 30a or lower clamp 30b) configured as described above is used for the work holding jig 10 to hold the holding tool 30 through the work holding frame 25. Electricity (electrons) supplied to 30 is supplied to both sides of the plate-like or sheet-like workpiece W via the respective sandwiching portions 33a, 33b, thereby plating on both sides of the plate-like or sheet-like workpiece W. Processing can be performed.

  In the present embodiment, the first clamp lever 31a has the first clamping surface 39a, and the second clamp lever 31b has the second clamping surface 39b, so that the workpiece W is clamped by the clamping tool 30. At this time, it is possible to effectively prevent the workpiece from detaching from the clamping tool 30 and damage to the workpiece.

  Specifically, if both the clamping portions 33a and 33b of the pair of clamp levers 31a and 31b have the first clamping surfaces 39a and 39a (see FIG. 6A), the thickness of the workpiece W is If it changes, since one 1st clamping surface 39a will be in the state which has an angle with the to-be-clamped surface of the workpiece | work W, the clamping part 33b which has the said 1st clamping surface 39a is the corner | angular part of the 1st clamping surface 39a periphery Then, the workpiece W comes into contact with the workpiece W (see FIG. 6B), and the workpiece W is easily damaged at the portion. Further, if both the clamping portions 33a and 33b of the pair of clamp levers 31a and 31b have the second clamping surfaces 39b and 39b (see FIG. 6C), both when the workpiece W is sandwiched. Since the second clamping surfaces 39b and 39b are in contact with the clamped surface of the workpiece W by only a part of the second clamping surfaces 39b and 39b, a sufficient contact area with the workpiece W is secured on both the second clamping surfaces 39b and 39b. Therefore, the workpiece W can be easily detached from the clamping tool 30.

  Therefore, the sandwiching surface of the first clamp lever 31a whose posture with respect to the sandwiched surface of the workpiece W does not change when the thickness of the sandwiched workpiece W changes is used as the first sandwiching surface 39a and the workpiece W is covered. By making the clamping surface of the second clamp lever 31b whose posture with respect to the clamping surface changes the second clamping surface 39b, the thickness of the workpiece W is changed while ensuring a sufficient contact area for holding the workpiece W. In addition, it is possible to prevent contact with the workpieces W at the corners on the periphery of the clamping surface. Specifically, when the first clamp lever 31a is fixed to the work holding frame 25, the clamping surface of the clamp lever 31a is in relation to the clamping surface of the workpiece W regardless of the thickness of the workpiece W to be sandwiched. The posture does not change (see FIGS. 4A and 4B). On the other hand, since the second clamp lever 31b rotates relative to the first clamp lever 31a, the second clamp lever 31b is clamped with respect to the clamped surface of the workpiece W according to the thickness of the workpiece W to be clamped. The posture of the surface changes. Therefore, the clamping surface of the first clamp lever 31a is a first clamping surface 39a constituted by the plane, and the clamping surface of the second clamp lever 31b is a second clamping surface 39b constituted by the curved surface. As a result, regardless of the thickness of the workpiece W, the entire first clamping surface 39a is in contact with the workpiece W to secure a contact area with the workpiece W and the second clamping surface 39b is curved instead of a corner portion. By contacting the workpiece W at the portion that has been removed, damage to the workpiece W is suppressed.

  Further, in this embodiment, each clamping portion 33a (or 33b) is clamped from the clamp lever body 32a (or 32b) provided with the clamping portion 33a (or 33b) to the clamping lever 31b (or 31a) on the other side. Since it protrudes toward 33b (or 33a) and has a first clamping surface 39a (or second clamping surface 39b) at its tip, the workpiece W and each clamp lever 31a (or 31b) when the workpiece W is sandwiched ) Can be prevented from contacting any part other than the clamping surface 39a (or 39b).

  In the present embodiment, the pair of clamp levers 31a and 31b are urged by the urging means 36, so that even if the thickness of the work W changes, the work W is held between the sandwiching portions 33a and 33b by the urging force. Can be suitably sandwiched. In addition, the workpiece W can be easily attached to and detached from the workpiece holding frame 25 of the workpiece holding jig 10. In addition, by using a helical spring having various general-purpose products as the biasing means 36, it is possible to reduce the manufacturing cost and reduce the weight.

  In the present embodiment, since the first and second clamp levers 31a and 31b conduct through the rotary shaft 35 and the urging means 36, a conductive member such as an electric wire connecting the clamp levers 31a and 31b is used. Without providing them separately, it is possible to achieve conduction between the two plan levers 31a and 31b.

  Moreover, in this embodiment, since both clamp levers 31a and 31b are each comprised with an electroconductive material, between the workpiece holding frame 25 of the workpiece holding jig 10, and each clamping part 33a, 33b of a pair of clamp lever 31a, 31b. Conduction between them can be more easily achieved.

  The work holding jig clamping tool and the work holding jig provided with the same according to the present invention are not limited to the above embodiment, and various modifications can be made without departing from the scope of the present invention. Of course.

  In the above-described embodiment, the pair of clamp levers 31a and 31b are coupled so as to be capable of relative rotation, but may be configured to be able to contact and separate while maintaining a parallel posture.

  Moreover, in the said embodiment, clamping part 33a, 33b protrudes from clamp lever main body 32a, 32b, and it has clamping surface 39a, 39b in the front-end | tip, but clamp lever main body 32a, 32b has clamping surface 39a, 39b directly. It may be.

  In the above embodiment, the clamping portions 33a and 33b, the coupling portions 34a and 34b, and the urging means 36 are arranged in order from the distal end side of the clamp lever main bodies 32a and 32b, but the clamping portions 33a and 33b, The biasing means 36 and the connecting portions 34a and 34b may be arranged in this order.

10 Work holding jig 25 Work holding frame (main body)
30 Workpiece holding jig clamping tool 30a Upper clamp 30b Lower clamp 31a First clamp lever (first clamping member)
31b Second clamp lever (second clamping member)
32a First clamp lever main body (first clamping member main body)
32b Second clamp lever body (second clamping member body)
33a Clamping part 33b Clamping part 35 Rotating shaft 36 Biasing means 39a First clamping surface 39b Second clamping surface W Workpiece

Claims (9)

It is attached to a work holding jig for immersing a plate-like or sheet-like work in a plating solution, and is a work holding jig holding tool capable of holding the work,
A first clamping member having a clamping part that can be electrically conductive with the main body of the workpiece holding jig and can be conductively contacted with one surface of the workpiece;
A workpiece holding jig clamping device comprising: a second clamping member that is conductively connected to the first clamping member and has a clamping portion that can be conductively contacted with the other surface of the workpiece. .   2. The workpiece holding jig clamping according to claim 1, wherein the first and second clamping members are coupled via a rotation shaft so as to be relatively rotatable so that the clamping portions come into contact with and away from each other. Ingredients. The first clamping member is provided with a fixing portion for attaching the first clamping member to the main body,
The sandwiching portion of the first sandwiching member has a first sandwiching surface that is in contact with one surface of the workpiece in a parallel state when the workpiece is sandwiched,
The clamping portion of the second clamping member has a second clamping surface that is in contact with the other surface in a curved state so as to bulge toward the other surface of the workpiece when the workpiece is sandwiched. The clamping tool for a workpiece holding jig according to claim 2.   Each of the first and second holding members includes a holding member main body in which the holding portion is provided at a tip portion, and each holding portion is a holding member on the opposite side from the holding member main body provided with the holding portion. The holding tool for a workpiece holding jig according to claim 3, wherein the holding tool protrudes toward the holding portion and has the first or second holding surface at a tip thereof.   5. The work holding jig according to claim 1, further comprising a biasing unit that biases the first and second clamping members in a direction in which the clamping parts approach each other. Nippers.   6. The clamping tool for a workpiece holding jig according to claim 5, wherein the biasing means is constituted by a helical spring connected to each of the first and second clamping members.   The workpiece holding jig clamping device according to claim 5 or 6, wherein the first and second clamping members conduct electricity through at least one of the rotating shaft and the urging means.   The workpiece holding jig clamping device according to any one of claims 1 to 7, wherein each of the first and second clamping members is made of a conductive material. A workpiece holding jig for holding a plate-like or sheet-like workpiece for immersion in a plating solution,
A body of the workpiece holding jig;
A workpiece holding jig comprising: the workpiece holding jig clamping tool according to claim 1, wherein the workpiece is fixed to the main body.

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