JP2007321242A - Clip type workpiece hanger in electroplating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To allow the clip part in a workpiece hanger to have satisfactory water drainability, an excellent product holding function, an excellent energizing efficiency to a product and an excellent sealing effect by insulation caps, and to make the contact efficiency of each contact certain even to products with different thicknesses. <P>SOLUTION: Each workpiece clip 4 in a workpiece hanger 1 is provided with: a fixed side holding pounder 5 having a fixed side contact 7; and a movable side holding pounder 6 having a movable side contact 8 energized to a direction close to the fixed side contact, a liquid draining groove part 15 is formed at the lower edge part of each holding pounder, and the respective contacts 7, 8 are formed at forked parts separated with the liquid draining groove part sandwiched. The respective contacts are formed, so as to be elliptic or elliptical shape with the longitudinal direction as the minor axis and the horizontal direction as the major axis. Each contact is formed in such a manner that the fixed side contact is made into vertical planar shape, and the movable side contact is made into R-projected circular face shape. The lower side of each workpiece clip is coated with an insulation cap 20 except for each contact freely attachable/detachable. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention has an electroplating structure having a clip portion for holding an upper part of a flat workpiece such as a printed circuit board to be plated in a suspended state, and the product holding portion of the clip portion is configured as a contact for energizing the workpiece. The present invention relates to a clip-type work hanger in an apparatus, and relates to an improvement of a clip portion of the work hanger.

  A clip type in an electroplating apparatus having a clip part for holding the upper part of a flat plate work such as a printed circuit board to be plated in a suspended state, and the product holding part of the clip part as a contact for energizing the work The present applicant has provided a work hanger of utility model registration No. 3085849 and Japanese Patent No. 3677488. The clip-type work hanger provided by the applicant of the present application supports a flat work to be plated in a plating solution to be suspended, and supplies current to the work from a cathode bar that functions as a transfer rail. A work hanger in an electroplating apparatus, and the work hanger includes a support member that has both a support function that is suspended and supported by the cathode bar so as to be laterally movable and a contact function that is conductively connected to the cathode bar. The lower part of the support member is integrally formed with the support member or is fixed in a surface contact state so as to be electrically connected to the lower part of the support member, and extends along the direction of the lateral long side of the workpiece. And a plurality of holding clips which are attached to the horizontally long board, hold the upper part of the work, and support the work in a suspended state. The support member that is each component of the work hanger so that current is passed from the cathode bar to the support member, the horizontally long substrate, the clamping clip, and from each clamping clip to the workpiece, The horizontally long substrate and the holding clip are formed of a conductive material, and the holding clip is fixed in a surface contact state so that the upper portion is electrically connected to the horizontally long substrate, and a fixed side contact is provided on the lower portion. A fixed-side clamping rod provided; and a movable-side clamping rod having an intermediate portion pivotally attached to an intermediate portion of the fixed-side clamping rod via an axial pin, and the fixed-side contact at a lower portion of the movable-side clamping rod And an elastic member such as a coil spring is interposed between the upper side of the fixed side holding rod and the upper side of the movable side holding rod, and the shaft pin is supported by the elastic force of the elastic member. As said yes The side contact is biased in the closing direction with respect to the fixed side contact, and the upper part of the workpiece can be sandwiched between the movable side contact closed with respect to the fixed side contact. is there.

  In the clip-type work hanger of the Japanese Patent No. 3677488, a rectangular movable body functioning as a movable contact is provided at the lower part of the movable clamping pin, and a rectangular opposing surface (movable contact) of the movable body is provided. It formed so that it could rotate up and down via a support shaft. Thus, the rectangular opposing surface (movable side contact) of the movable body is brought into surface contact with a flat plate-like workpiece having a different thickness.

  Further, in the work hanger of the utility model registration No. 3085849, the fixed side contact and the movable side contact are formed on the top surface of the projection, and in the illustrated embodiment, the top surface that functions as each contact is formed in a circle. In the work hanger disclosed in Japanese Patent No. 3677488, as described above, the rectangular opposing surface of the movable body is used as the movable contact, and the fixed contact is formed from the rectangular top surface of the protrusion.

  Further, in the clip-type work hanger of Japanese Patent No. 3677488, the lower part of the plate-like member serving as the fixed-side clamping rod is cut leaving a contact portion, and this contact portion is used as the protruding fixed contact. Formed.

  Further, in the clip type work hanger of Japanese Patent No. 3676488, a replaceable rubber (preferably silicon rubber) insulating cap is provided, and the fixed-side clamping cage that is put into the plating solution together with the workpiece by this insulating cap. And each lower side of the movable side holding rod can be detachably covered. The insulating cap is formed with an opening that exposes only a rectangular contact, and a protruding edge that surrounds the opening is slightly protruded from the protruding position of the contact. This replaceable insulating cap is a dedicated insulating cap that matches the shapes of the lower side of the fixed side holding rod and the movable side holding rod having different shapes.

Utility Model Registration No. 3085849 Japanese Patent No. 3677488

  However, since the conventional clip-type work hanger described above does not devise measures to cope with liquid drainage or cleaning at the work clamping part of the clip part, the liquid drainage of the liquid adhered to the clip part carried out from the liquid In particular, there was a bad effect that the work pinching portion of the clip portion was not sufficiently drained, and the liquid remained in the work pinching portion. For this reason, there is a problem that the clip portion carried out of the liquid is carried into the liquid of a different order with the previous liquid attached. In addition, it is particularly difficult to clean the work clamping part of the clip part when air cleaning or sponge cleaning of the clip part from which the work has been removed during unloading.

  Further, in the conventional clip-type work hanger described above, each contact is formed in a circle or a rectangle. In the case of circular contacts, if the area of the circular contact is increased, the contact holding range in the vertical direction (height direction) with respect to a flat workpiece (for example, a rectangular substrate product) also becomes wider, so that the upper grip by the contact with the rectangular substrate product can be held. There was a drawback that the range was widened. This disadvantage is that the upper grip margin range by contact with a square substrate product does not become a substrate product, so if the upper grip margin range becomes wider, the product range in the vertical direction (height direction) becomes narrower. Means. Further, in the rectangular contact, it is difficult to reliably seal the peripheral wall of the projection portion having the corner with the insulating cap, and there is a problem that a gap is easily formed around the contact. There is a problem that a plating lump is generated and adhered to the gap around the contact, and the plating lump (for example, a shell-shaped plating lump) adhering to the contact causes each contact to be poorly contacted, so that reliable energization is not performed. was there.

  Further, the conventional clip-type work hanger described above is rotated in the vertical direction via the support shaft at the lower part of the movable side holding rod in order to cope with the change in the thickness of the flat work (for example, the substrate product). A rectangular movable body is provided, and the rectangular opposing surface of the movable body is used as a movable side contact. However, there is a problem that the energization efficiency is inferior because there is no unity between the movable body to be rotated and the movable side clamping rod. In addition, there is a drawback in that it is necessary to increase the manufacturing cost of the clip part in order to provide a movable body that can be rotated in the vertical direction on the movable side clamping rod. A plurality of clips are required for one hanger. Since a large number of hangers must be prepared, the manufacturing cost of the entire apparatus is increased.

  In addition, since the conventional clip-type work hanger described above is formed by cutting the fixed-side contact of the clip portion one by one, the processing requires skill, and the fixed-side contact with the same precision is cut. It was difficult to do.

  In addition, the above-described conventional clip-type work hanger uses a dedicated insulating cap that matches each shape of the lower side of the fixed side holding rod and the movable side holding rod as different replaceable insulating caps. . For this reason, two types of dedicated insulating caps have to be formed, which raises the problem of increasing the manufacturing cost of the insulating cap. In addition, when replacing the insulating cap, it is necessary to fit dedicated insulating caps on the fixed side and the movable side, respectively.

  In view of such a situation, an object of the present invention is to provide a clip-type work hanger in which all the disadvantages of the prior art described above are improved.

  The clip-type work hanger in the electroplating apparatus according to the present invention includes a support portion (2) supported by the transfer rail (B) so as to be laterally movable, and a horizontally long clip mounting substrate integrally connected to the support portion. Part (3), and a plurality of work clips (4) attached to the clip attachment board part at a predetermined interval in the width direction of the board part, the support part, the clip attachment board part, and the work A clip is formed of a conductive material, and an upper portion of a flat plate workpiece (W) such as a printed board to be plated with the work clip is held in a suspended state, and the clamping portion of the work clip is energized to the flat plate workpiece. The work clip (4) is fixed in a surface contact state so that the upper portion is electrically connected to the clip mounting board portion. A fixed-side clamping rod (5) extending downward from the lower end of the clip mounting board portion, and an intermediate portion thereof is pivotally attached to an intermediate portion of the fixed-side clamping rod via a shaft pin (10). A movable side holding rod (6), a fixed side contact (7) protruding from the lower portion of the fixed side holding rod, and a movable side contact (8) facing the fixed side contact at the lower portion of the movable side holding rod ) And an elastic member (11) such as a compression coil spring is interposed between the upper side of the fixed side holding rod and the upper side of the movable side holding rod, and the shaft pin is moved by the elastic force of the elastic member. The movable contact is urged in a closing direction toward the fixed contact as a fulcrum so that the upper portion of the flat workpiece can be held in a suspended state between the closed fixed contact and the movable contact. Before being put into the plating solution together with the flat plate work Each lower portion of the fixed pressing Ji杆 the movable clamping Ji杆 is constructed by covering with an insulating coating of non-conductive material except for the contact portions (20).

  And the clip type work hanger of this invention improved the said work clip (4) as follows, in order to solve an above described subject. That is, a drainage groove portion (15) cut out in the longitudinal direction (height direction) from the lower edge of each clamping rod is formed at the intermediate position in the lateral width direction of each lower end portion of the fixed side clamping rod and the movable side clamping rod. The bifurcated portions (16, 16) spaced apart in the lateral width direction are formed at the lower end portions of the fixed-side clamping rod and the movable-side clamping rod, respectively, with the liquid draining groove portion therebetween, and from the lower end portions of the bifurcated portions. The fixed contact (7) and the movable contact (8) are formed on the opposing top surfaces of the protrusions (17, 17) that protrude in the opposing direction, respectively, and the fixed clamping pin and the movable clamp Each lower side of the side clamping rod was covered with the insulating coating portion (20) adapted to each bifurcated shape except for each contact portion. And this insulation coating | coated part (20) is comprised with the insulation cap (20) which has the bifurcated coating | coated part (21,21) which detachably fits according to the said bifurcated part, and has this bifurcated coating | coated part. The insulating cap is formed of an insulating rubber-based resin having chemical resistance and elasticity, and an opening (22) is formed so as not to cover the contact portion projecting in the facing direction. The peripheral edge (23) of the opening is formed so as to cover the peripheral wall of the protrusion closely and slightly protrude from the projecting position of the contact, except for the contact portion not covered by the opening. The sandwiching rod and each lower side of the movable side sandwiching rod are configured to be detachably fitted from below.

  Thus, in the present invention, the liquid drain groove portion (15) is formed at each lower end portion of the fixed side clamp rod and the movable side clamp rod, and the liquid drain groove portion (15) is interposed therebetween so as to be separated in the lateral width direction. The bifurcated portions (16, 16) are respectively formed, and a plurality of contacts spaced apart in the lateral width direction are projected from the lower ends of the bifurcated portions. The liquid adhering to the work clip discharged from the liquid is quickly removed by the liquid cut groove portion, and the liquid cut is good. It is possible to prevent the work clip carried out of the liquid from being carried into the liquid of a different order with the previous liquid attached. Further, when the work clip is cleaned by injecting air toward the work clip from which the work has been removed during unloading, the adhering liquid is quickly removed by the liquid cut groove (15), so that the liquid can be smoothly cut. In addition, the work clip clamping part is configured as a contact point for energizing the flat plate work, and the contact point of each work clip is a two-point contact that is spaced apart in the width direction. Can be made.

  The clip-type work hanger of the present invention has the work clip (4) improved as follows in order to solve the above-described problems. That is, the fixed-side contact (7) and the movable-side contact (8) are projected from the lowermost ends of the fixed-side holding rod (5) and the movable-side holding rod (6) in the opposing direction. 17, 17), and the top surface (each contact point) is an ellipse or an ellipse whose longitudinal direction (height direction) has a minor axis and whose lateral direction (width direction) has a major axis. Formed in shape. And the said insulation coating | coated part (20) is shape | molded by the insulating rubber-type resin which has chemical resistance and elasticity, and does not coat | cover the said ellipse or ellipse-shaped contact part which protruded toward the opposing direction An elliptical or elliptical opening (22) is formed, and the elliptical or elliptical opening peripheral part (23) of the opening is a peripheral wall of the projection (17) (peripheral wall of an elliptical cylinder) Are formed so as to protrude slightly from the projecting position of the contact, and the lower side of the fixed side holding rod and the movable side holding rod except for the contact portion not covered by the opening, respectively. The insulating cap (20) is detachably fitted from below.

  As described above, the present invention clamps the upper part of a flat work (W) such as a printed circuit board to be plated with the work clip in a suspended state, and energizes the flat work with the sandwiched portion of the work clip. This contact point is formed at the lowermost end of each holding rod, and each contact point has a longitudinal direction (height direction) as a short diameter and a lateral direction (width direction) as a long diameter. It was formed in an oval or elliptical shape. For this reason, the contact area can be formed relatively large, and the contact pinching range in the vertical direction (height direction) with respect to a flat workpiece (for example, a rectangular substrate product) can be relatively narrowed. The upper grip margin range by the contact can be made relatively narrow. Since the upper gripping range by the contact point for a square substrate product is not a substrate product, the product range can be relatively reduced in the vertical direction (height direction) by making the upper gripping range by the contact point that does not become this substrate product as narrow as possible. Can be wide. In addition, since the contacts are formed in an oval or elliptical shape, the electrical conductivity is excellent.

  Further, each contact is formed in an oval or elliptical shape, and this elliptical or elliptical contact does not have a corner as in the rectangular contact, so that the shape of the peripheral wall of the protrusion is the opening peripheral edge of the insulating cap. It is easy to cover closely (circular wall of an oval or elliptical cylinder) and the sealing effect by the insulating cap is high. In particular, the sealing effect is high compared to rectangular contacts. As described above, since the sealing effect around the contact is high, the generation of a gap around the contact can be prevented, and the adverse effect that the plating lump is generated and adhered to the gap around the contact can be eliminated. It is possible to prevent contact failure of each contact.

  The clip-type work hanger of the present invention has the work clip (4) improved as follows in order to solve the above-described problems. That is, the fixed-side contact (7) and the movable-side contact (8) are projected from the lowermost ends of the fixed-side holding rod (5) and the movable-side holding rod (6) in the opposing direction. 17, 17) opposed top surfaces, the fixed contact (7) is a vertical flat top surface, and the movable contact (8) is rounded in the direction facing the fixed contact. It was formed on the top surface of the arcuate surface shape protruding into And the said insulation coating part (20) is shape | molded with the insulating rubber-type resin which has chemical resistance and elasticity, and the opening part (22) which does not coat | cover the said contact part protruded toward the opposing direction The peripheral edge (23) of the opening is formed so as to cover the peripheral wall of the protrusion closely and slightly protrude from the projecting position of the contact, and is not covered by the opening. Except for the portion, each of the lower side of the fixed side holding rod and the movable side holding rod is constituted by an insulating cap (20) that is detachably fitted from below.

  A flat workpiece as a workpiece, for example, a printed circuit board, has a thin plate of about 0.1 mm to a thick plate of about 2.6 mm. According to the present invention, since the both sides of the printed board are sandwiched between the fixed side contact formed in a vertical planar shape and the movable side contact formed in an arcuate shape projecting in a round shape, printed boards having different thicknesses are provided. Even when sandwiched in a suspended state, the fixed side contact can always be brought into contact with the substrate surface of these substrates with a constant contact efficiency, and the movable side contact formed in the arcuate surface shape is also always constant. Can contact with contact efficiency. Therefore, the contact efficiency of each contact on the fixed side and the movable side can always be made constant even when the thickness of the printed board changes. And the subject which concerns can be achieved, without raising manufacturing cost.

  The clip-type work hanger of the present invention is formed by integrally casting the fixed side holding rod (5) and the movable side holding rod (6) of the work clip with each contact by the lost wax method. For example, a metal material such as SUS stainless steel is preferable. Each contact point of each clamping rod integrally cast by the lost wax method is finished with high accuracy and a smooth surface of the contact point.

  Further, the clip-type work hanger of the present invention substantially includes the lower side of the fixed side holding rod (5) and the movable side holding rod (6) covered with the insulating cap (20) of the work clip. It is formed in substantially the same shape that is symmetric with respect to the left and right, and each lower part of each of the holding rods that are formed in the substantially same shape is attached and detached with the insulating cap (20) that is formed in the substantially same shape including the peripheral edge portion (23) I was able to fit freely.

  As a result, the integrally formed substantially identical insulating cap can be used both on the fixed side and on the movable side, the manufacturing cost of the insulating cap can be reduced, and the working efficiency of fitting the insulating cap to each holding rod is improved. Can do.

  In the clip-type work hanger of the present invention, it is preferable that the insulating cap (20) of the work clip is integrally formed of chloroprene rubber excellent in elasticity, wear resistance, and chemical resistance.

  Therefore, according to the clip-type work hanger in the electroplating apparatus according to the present invention, it is possible to smoothly perform the liquid breakage by the liquid breakage groove portion, and furthermore, the contact points of each work clip are two-point contacts that are separated in the lateral width method. In addition, the function of sandwiching the flat workpiece and the energization efficiency can be stabilized.

  In addition, according to the clip-type work hanger in the electroplating apparatus according to the present invention, each contact is formed at the lowermost end portion of each clamping rod, and the longitudinal direction (height direction) is the short diameter, and the lateral direction ( By forming an ellipse or ellipse with a major axis in the width direction, the contact area can be made relatively large, and the contact clamping range in the vertical direction (height direction) with respect to a flat workpiece (for example, a rectangular substrate product) Can be made relatively narrow, so that the range of the upper grip by the contact point for the rectangular substrate product can be made relatively narrow. In addition, since the contacts are formed in an oval or elliptical shape, the electrical conductivity is excellent. Further, each contact is formed in an oval or elliptical shape, and this elliptical or elliptical contact does not have a corner as in the rectangular contact, so that the shape of the peripheral wall of the protrusion is the opening peripheral edge of the insulating cap. It is easy to cover closely (circular wall of an oval or elliptical cylinder) and the sealing effect by the insulating cap is high. As described above, since the sealing effect around the contact is high, the generation of a gap around the contact can be prevented, and the adverse effect that the plating lump is generated and adhered to the gap around the contact can be eliminated. It is possible to prevent contact failure of each contact.

  Further, according to the clip-type work hanger in the electroplating apparatus according to the present invention, the movable side formed in a circular arc shape protruding in a round shape with the fixed side contact formed on both sides of the printed board in a vertical plane shape. Since it is clamped by the contact, even when the substantially flat workpiece is replaced with a workpiece having a thickness other than the setting, the contact of the movable contact with the workpiece surface can always be made constant, and the contact efficiency can be made constant. And the subject which concerns can be achieved, without raising manufacturing cost.

  Embodiments of the present invention will be described with reference to the drawings. 1 to 4 are embodiments of the present invention, FIG. 1 is a front view, FIG. 2 is a partially longitudinal side view, FIG. 3 is an enlarged side view of a clip portion, and A is a closed state sandwiching a thin plate-like workpiece. FIG. 4 is an enlarged side view, B is an enlarged side view in a fully opened state, and FIG. 4 is an enlarged exploded front view of a clip portion. FIG. 5 is an enlarged exploded front view of another embodiment of the clip portion of the present invention. FIG. 6 is an enlarged side view of the contact portion of the present invention common to the embodiments of FIGS. 1 to 4 and 5.

  In addition, in the following description, description of embodiment which does not specifically limit a figure is common to embodiment of FIGS. 1-4, and embodiment of FIG.

  In the figure, reference numeral 1 denotes a clip-type work hanger used in an electroplating apparatus. The clip-type work hanger 1 is a rectangular flat plate work such as a printed circuit board that is put in a plating solution A and plated. W is suspended in a suspended state, and a current is passed through the workpiece hanger 1 to the plate-like workpiece W. The clip-type work hanger 1 has a supporting function that is supported by hanging on a transfer rail B (in this embodiment, the transfer rail functions as a cathode rail) B and is electrically conductive on the transfer rail B. It is fixed in a surface contact state by a fixing bolt C1 so as to be integrally connected to the lower portion of the support portion 2 having a contact function to be connected, and in the direction of the horizontally long side of the flat workpiece W. A rectangular horizontally long clip mounting board 3 extending along the board, and the clip mounting board 3 attached to the clip mounting board 3 at a predetermined interval in the width direction of the board 3, A plurality (four in the figure) of work clips 4 are provided to hold and support the flat work W in a suspended state. Each component of the work hanger 1 (the support part 2, the clip mounting board part 3, and the work clip 4) is formed of a conductive material. Specifically, in consideration of electrical conductivity and tensile strength, the support part 2 and the work clip 4 are made of stainless steel, and the clip mounting board part 3 is made of copper or brass. When the transfer rail functions as a cathode rail, current flows from the transfer rail B through the support portion 2, the clip mounting substrate portion 3, and the work clip 4 to the work W from the clamping portion of each work clip 4. Is energized.

  The work clip 4 is fixed in surface contact with a fixing bolt C2 so that the upper part is electrically connected to the clip mounting board part 3, and the lower part is extended downward from the lower end of the clip mounting board part 3. A fixed-side clamping rod 5 and a movable-side clamping rod 6 having an intermediate portion pivotally attached to a bracket 9 fixed to an intermediate portion of the fixed-side clamping rod 5 via a shaft pin 10. A fixed-side contact 7 projects from the lower end of the sandwiching rod 5, and a movable-side contact 8 facing the fixed-side contact 7 projects from the lower end of the movable-side sandwiching rod 6. Further, an elastic member 11 made of a compression coil spring is interposed between the upper side of the fixed side holding rod 5 and the upper side of the movable side holding rod 6, and the shaft pin is driven by the elasticity of the elastic member (compression coil spring) 11. The movable contact 8 is urged in a closing direction with respect to the fixed contact 7 with 10 as a fulcrum, and the closed fixed contact 7 and the movable contact 8 are closed as shown in FIG. The upper part of the flat work W can be held in a suspended state. When the elastic member (compression coil spring) 11 resists the elasticity and the upper side of the movable side holding rod 6 is pressed toward the upper side of the fixed side holding rod 5 in the direction of the arrow in FIG. The movable contact 8 is moved away from the fixed contact 7, and the contacts are opened as shown in FIG. Further, the lower side of the fixed side holding rod 5 and the movable side holding rod 6 put in the plating solution together with the plate-like workpiece W to be plated is an insulating covering portion 20 made of a non-conductive material except for each contact portion. Covered. In this embodiment, a detachable insulating cap (described later) is used as the insulating coating portion 20. When the flat work W is attached to or detached from the work clip 4, the upper side of each movable clamping pin 6 of each of the plurality of work clips 4 is simultaneously resisted by the elasticity of the elastic member (compression coil spring) 11. Although pressing is performed, this pressing is performed using a mechanical forcing force (not shown).

  In the embodiment shown in FIG. 1 to FIG. 4, in the middle position in the width direction of each lower end portion of the fixed side holding rod 5 and the movable side holding rod 6 from the lower edge of each holding rod 5, 6 in the vertical direction (high Inverted U-shaped liquid cut groove portions 15 that are notched in the vertical direction) are formed, respectively, and the liquid cut groove portions 15 are interposed between the lower end portions of the fixed side holding rod 5 and the movable side holding rod 6 so as to be separated in the lateral width direction. The bifurcated portions 16 and 16 were formed. The opposing top surfaces of the projections 17, 17 projecting in the opposing direction from the lower ends of the bifurcated portions 16, 16 are formed as the fixed contact 7 and the movable contact 8. As described above, the lower side portions of the fixed side holding rod 5 and the movable side holding rod 6 that are put in the plating solution together with the plate-like workpiece W to be plated are bifurcated portions 16, 16 except for the respective contact portions. It is covered with the insulating covering portion 20 according to the shape.

  In the embodiment, an insulating cap 20 having bifurcated covering portions 21 and 21 detachably fitted to the bifurcated portions 16 and 16 is used as the insulating covering portion 20. The insulating cap 20 having the bifurcated covering portions 21 and 21 is an insulating rubber-based resin having chemical resistance and elasticity (preferably chloroprene rubber particularly excellent in elasticity, wear resistance, and chemical resistance). Opening portions 22 and 22 are formed so as not to cover the contact portions projecting in the opposite direction, and the opening peripheral portions 23 and 23 of the opening portions 22 and 22 are formed on the protruding portions 17 and 22. The peripheral wall of 17 is closely covered and slightly protruded from the projecting position of the contact, and the fixed side except for the contact portion (the top surface of the protrusion) that is not covered by the openings 22 and 22. The lower part of the holding hook 5 and the movable side holding hook 6 can be detachably fitted from below.

  In the work clip 4 of the embodiment shown in FIGS. 1 to 4, liquid can be smoothly cut by the liquid cut groove 15, and the contact points 7, 8 of each work clip 4 are separated by a lateral width method. Since the point contact is made, the function of holding the flat workpiece W and the energization efficiency can be stabilized.

  The other embodiment of the clip portion shown in FIG. 5 has a configuration in which the liquid drain groove portion 15 is not formed, and the other configuration is substantially the same as the configuration of the work clip 4 shown in the embodiment of FIGS. It is. Therefore, the description of the same reference numerals as those of FIG. 4 shown in FIG. In the embodiment of FIG. 5, the two contacts 7 and 8 are formed so as to project apart from each other in the lateral width direction. However, the present invention is not limited to this. It can be implemented.

  The work clip 4 shown in the embodiment of FIGS. 1 to 4 and 5 includes the fixed side contact 7 and the movable side contact 8 at the lowermost ends of the fixed side holding rod 5 and the movable side holding rod 6. The protrusions 17 and 17 projecting in the opposite direction from the respective portions are formed on the opposite top surfaces, and the top surfaces (the contact points) have a longitudinal direction (height direction) as a short diameter and a lateral direction (width). It is formed in an oval shape (or an elliptical shape) with a major axis in the direction. The insulating cap 20 is formed with an oval (or oval) opening 22 that does not cover the oval (or oval) contact portion projecting in the facing direction. The elliptical (or elliptical) peripheral edge 23 of the opening 22 closely covers the peripheral wall of the projection 17 (the peripheral wall of the elliptical or elliptical cylinder), and is clearly shown in FIG. As shown, each of the lower portions of the fixed-side holding rod 5 and the movable-side holding rod 6 is formed by slightly projecting from the projecting position of the contacts 7, 8 except for the contact portion not covered by the opening 22. Each side can be detachably fitted from below.

  As described above, the insulating cap 20 is an insulating rubber-based resin having chemical resistance and elasticity, and is preferably integrally formed with chloroprene rubber particularly excellent in elasticity, wear resistance, and chemical resistance. A projecting edge peripheral edge 23 surrounding the opening 22 is formed integrally with the insulating cap 20 made of chloroprene rubber. As described above, the peripheral edge 23 of the opening closely covers the peripheral wall of the protrusion 17 (the peripheral wall of an oval or elliptical cylinder), and as clearly shown in FIG. 8 is formed so as to protrude slightly from the protruding position, but in the open state where the contacts 7 and 8 are opened, it is in a state of protruding from the contacts 7 and 8 and the contacts 7 and 8 are closed. Then, it deform | transforms so that each contact 7 and 8 may be press-contacted on both sides of the said flat workpiece W. In this way, the lower side of the fixed side holding rod 5 and the movable side holding rod 6 put in the plating solution A together with the work W is plated by the insulating cap 20 except for the contacts 7 and 8. Securely isolated from A and reliably insulated. Further, since the insulating cap 20 made of chloroprene rubber has particularly excellent elasticity, it is easily deformed corresponding to the protruding form of the contacts 7 and 8 when mounting and dismounting the cap. It is easy to attach to or detach from 5 or 6, and to easily replace the insulating cap.

  Further, each of the contacts 7 and 8 is formed in an ellipse or an ellipse, and the contact of the ellipse or ellipse does not have a corner like a rectangular contact. Thus, the peripheral wall of the protrusion 17 (the elliptical or elliptical cylindrical peripheral wall) can be easily covered closely, and the sealing effect by the insulating cap 20 is high. In particular, the sealing effect is high compared to rectangular contacts. As described above, since the sealing effect around the contact is high, the generation of a gap around the contact can be prevented, and the adverse effect that the plating lump is generated and adhered to the gap around the contact can be eliminated. It is possible to prevent contact failure of each contact.

  The work clip 4 shown in the embodiment of FIGS. 1 to 4 and 5 includes the fixed side contact 7 and the movable side contact 8 at the lowermost ends of the fixed side holding rod 5 and the movable side holding rod 6. As shown clearly in FIG. 6, the fixed-side contact 7 is formed as a vertical plane top surface (FIG. 6). The movable side contact 8 is formed on the top surface of the arcuate surface that protrudes in a rounded shape in the direction opposite to the fixed side contact 7. As a result, even when the printed circuit boards having different thicknesses are held in a suspended state, the fixed side contact 7 composed of the top surface of the plane shape perpendicular to the substrate surfaces of these substrates is always paired with a constant contact efficiency. Needless to say, the movable contact 8 that is movable with the shaft pin 10 as a fulcrum is also formed on the top surface of the arcuate surface, so that contact can always be made with a constant contact efficiency. Therefore, the contact efficiency of the contacts 7 and 8 on the fixed side and the movable side can always be constant even when the thickness of the printed circuit board changes.

  Further, the fixed-side clamping rod 5 and the movable-side clamping rod 6 of the work clip 4 are integrally formed with each contact by a known lost wax method, and are formed of SUS stainless steel. Each contact point of each clamping rod integrally cast by the lost wax method is finished with high accuracy and a smooth surface of the contact point.

  As shown in FIGS. 2 to 6, the lower side of the fixed side holding rod 5 and the movable side holding rod 6 covered with the insulating cap 20 have substantially the same shape which is substantially symmetric. Formed. By forming the lower sides of the holding rods 5 and 6 in substantially the same shape, one type of insulating cap 20 having the same shape can be used both on the fixed side and on the movable side. Since the insulating cap can be used both, the manufacturing cost of the insulating cap can be reduced, and the working efficiency of fitting the insulating cap to each holding rod can be improved.

It is a front view of the present invention. It is a partially vertical side view of the present invention. It is an enlarged side view of the clip part of this invention, A is an enlarged side view of the closed state which pinched | interposed the thin plate-shaped workpiece, B is an enlarged side view of a full open state. It is an expansion exploded front view of the clip part of the present invention. It is an expansion exploded front view of other embodiments of a clip part of the present invention. It is an enlarged side view of the contact part of this invention.

Explanation of symbols

1 Work hanger W Flat work A A plating solution B Transfer rail (cathode bar)
DESCRIPTION OF SYMBOLS 2 Support part 3 Clip attachment board | substrate part 4 Work clip 5 Fixed side clamping rod 6 Movable side clamping rod 7 Fixed side contact 8 Movable side contact 9 Bracket 10 Axis pin 11 Elastic member (compression coil spring)
15 Liquid cut groove 16, 16 Fork 17, 17, Projection 20 Insulation coating (insulation cap)
21, 21 Bifurcated covering part 22, 22 opening part 23, 23 opening peripheral part

Claims (9)

A support portion (2) supported by the transfer rail so as to be laterally movable, a horizontally long clip attachment substrate portion (3) integrally connected to the support portion, and a width direction of the substrate portion on the clip attachment substrate portion A plurality of work clips (4) attached at predetermined intervals to each other, wherein the support part, the clip attachment board part, and the work clip are formed of a conductive material and plated with the work clip. A clip-type work hanger (1) in an electroplating apparatus in which the upper part of a flat work (W) such as is held in a suspended state and the holding part of the work clip is configured as a contact point for energizing the flat work. The work clip (4) is fixed in a surface contact state so as to be electrically connected to the clip mounting substrate portion at the top, A fixed-side clamping rod (5) extending downward from the lower end of the bottom substrate portion, and a movable side pivotally attached to the intermediate portion of the fixed-side clamping rod via a shaft pin (10) A clamping contact (6), a fixed contact (7) projecting from the lower part of the fixed clamping pin, and a movable contact (8) facing the fixed contact at the lower part of the movable clamping pin An elastic member (11) such as a compression coil spring is interposed between the upper side of the fixed side holding rod and the upper side of the movable side holding rod, and the shaft pin is used as a fulcrum by the elasticity of this elastic member. The movable contact is urged in a closing direction toward the fixed contact, and the upper portion of the flat workpiece can be held in a suspended state between the closed fixed contact and the movable contact. And the fixed-side clamping rod that is put in the plating solution together with the flat plate-shaped workpiece. In what each lower side of the serial movable clamping Ji杆 constructed covered with an insulating coating of non-conductive material except for the contact portions (20),
A liquid drainage groove (15) is formed in the middle of each lower end of each of the fixed-side holding rod and the movable-side holding rod in the width direction, and is formed by vertically cutting from the lower edge of each holding rod. Bifurcated portions (16, 16) spaced apart in the lateral width direction are formed at the lower end portions of the movable-side clamping rods with the liquid drainage groove portion therebetween, and projecting in opposite directions from the lower end portions of the bifurcated portions, respectively. The fixed-side contact (7) and the movable-side contact (8) are formed on the opposing top surfaces of the protrusions (17, 17), respectively, and the lower side of the fixed-side holding rod and the movable-side holding rod A clip-type work hanger in an electroplating apparatus, characterized in that it is covered with the insulating coating portion (20) that matches each bifurcated shape except for each contact portion. A support portion (2) supported by the transfer rail so as to be laterally movable, a horizontally long clip attachment substrate portion (3) integrally connected to the support portion, and a width direction of the substrate portion on the clip attachment substrate portion A plurality of work clips (4) attached at predetermined intervals to each other, wherein the support part, the clip attachment board part, and the work clip are formed of a conductive material and plated with the work clip. A clip-type work hanger (1) in an electroplating apparatus in which the upper part of a flat work (W) such as is held in a suspended state and the holding part of the work clip is configured as a contact point for energizing the flat work. The work clip (4) is fixed in a surface contact state so as to be electrically connected to the clip mounting substrate portion at the top, A fixed-side clamping rod (5) extending downward from the lower end of the bottom substrate portion, and a movable side pivotally attached to the intermediate portion of the fixed-side clamping rod via a shaft pin (10) A clamping contact (6), a fixed contact (7) projecting from the lower part of the fixed clamping pin, and a movable contact (8) facing the fixed contact at the lower part of the movable clamping pin An elastic member (11) such as a compression coil spring is interposed between the upper side of the fixed side holding rod and the upper side of the movable side holding rod, and the shaft pin is used as a fulcrum by the elasticity of this elastic member. The movable contact is urged in a closing direction toward the fixed contact, and the upper portion of the flat workpiece can be held in a suspended state between the closed fixed contact and the movable contact. And the fixed-side clamping rod that is put in the plating solution together with the flat plate-shaped workpiece. In what each lower side of the serial movable clamping Ji杆 constructed covered with an insulating coating of non-conductive material except for the contact portions (20),
The fixed-side contact (7) and the movable-side contact (8) are opposed to top portions of projecting portions (17, 17) protruding in opposite directions from the lowermost ends of the fixed-side holding rod and the movable-side holding rod, respectively. A clip in an electroplating apparatus, characterized in that each contact formed on a top surface is formed into an ellipse or an ellipse having a minor axis in the longitudinal direction and a major axis in the lateral direction. Expression work hanger. A support portion (2) supported by the transfer rail so as to be laterally movable, a horizontally long clip attachment substrate portion (3) integrally connected to the support portion, and a width direction of the substrate portion on the clip attachment substrate portion A plurality of work clips (4) attached at predetermined intervals to each other, wherein the support part, the clip attachment board part, and the work clip are formed of a conductive material and plated with the work clip. A clip-type work hanger (1) in an electroplating apparatus in which the upper part of a flat work (W) such as is held in a suspended state, and the work clip holding part is configured as a contact for energizing the flat work. The work clip (4) is fixed in a surface contact state so as to be electrically connected to the clip mounting substrate portion at the top, A fixed-side clamping rod (5) extending downward from the lower end of the bottom substrate portion, and a movable side pivotally attached to the intermediate portion of the fixed-side clamping rod via a shaft pin (10) A clamping contact (6), a fixed contact (7) projecting from the lower part of the fixed clamping pin, and a movable contact (8) facing the fixed contact at the lower part of the movable clamping pin An elastic member (11) such as a compression coil spring is interposed between the upper side of the fixed side holding rod and the upper side of the movable side holding rod, and the shaft pin is used as a fulcrum by the elasticity of this elastic member. The movable contact is urged in the closing direction toward the fixed contact, and the upper part of the flat workpiece can be held in a suspended state between the closed fixed contact and the movable contact. And the fixed-side clamping rod that is put in the plating solution together with the flat plate-shaped workpiece. In what each lower side of the serial movable clamping Ji杆 constructed covered with an insulating coating of non-conductive material except for the contact portions (20),
The fixed-side contact (7) and the movable-side contact (8) are opposed to top portions of projecting portions (17, 17) protruding in opposite directions from the lowermost ends of the fixed-side holding rod and the movable-side holding rod, respectively. The fixed contact point is formed on a top surface having a vertical planar shape, and the movable contact point is formed on a top surface having an arcuate shape protruding in a round shape in a direction opposite to the fixed side contact. A clip-type work hanger in the electroplating machine.   The electroplating apparatus according to any one of claims 1 to 3, wherein the fixed-side clamping rod (5) and the movable-side clamping rod (6) are integrally cast with each contact by a lost wax method. Clip-type work hanger.   The insulating covering portion (20) is constituted by an insulating cap (20) having a bifurcated covering portion (21, 21) that is detachably fitted in accordance with the bifurcated portion (16, 16). The insulating cap having a shape is formed of an insulating rubber-based resin having chemical resistance and elasticity, and an opening (22) is formed so as not to cover the contact portion protruding in the facing direction. The opening peripheral edge portion (23) of the opening portion is formed so as to cover the peripheral wall of the protrusion portion closely and slightly protrude from the protruding position of the contact point, except for the contact portion not covered by the opening portion. 2. The clip-type work hanger in an electroplating apparatus according to claim 1, wherein each of the fixed side holding rod and the lower side of the movable side holding rod is detachably fitted from below.   The insulating coating portion (20) is formed of an insulating rubber-based resin having chemical resistance and elasticity so as not to cover the oval or elliptical contact portion projecting in the facing direction. An elliptical or elliptical opening (22) is formed, and the elliptical or elliptical opening peripheral edge (23) of the opening closely covers the peripheral wall of the protrusion and the projecting position of the contact An insulating cap (20) formed so as to protrude slightly, and detachably fitted to each lower side of the fixed side holding rod and the movable side holding rod from below, except for a contact portion not covered by the opening. The clip-type work hanger in the electroplating apparatus according to claim 2, wherein   The insulating coating portion (20) is formed of an insulating rubber-based resin having chemical resistance and elasticity, and has an opening (22) for not covering the contact portion projecting in the facing direction. An opening peripheral portion (23) of the opening is formed so as to cover the peripheral wall of the protrusion closely and slightly protrude from the protruding position of the contact, and to form a contact portion not covered by the opening. The electroplating apparatus according to claim 3, further comprising an insulating cap (20) that is detachably fitted to each of the lower side of the fixed side holding rod and the movable side holding rod from below. Clip-type work hanger.   The lower side of the fixed side holding rod (5) and the movable side holding rod (6) covered with the insulating cap (20) are formed in substantially the same shape that is substantially symmetrical, and formed in the substantially same shape. 6. The lower part of each of said holding jaws can be detachably fitted with said insulating cap (20) formed in substantially the same shape including said opening peripheral edge (23). A clip-type work hanger in the electroplating apparatus according to any one of 1 to 7. The clip-type work hanger in an electroplating apparatus according to any one of claims 5 to 7, wherein the rubber-based resin is chloroprene rubber.

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