A special tooling fixture for electroplating

Abstract

The utility model relates to a frock clamp special for electroplating, including support frame and hoisting frame, the support frame includes the support ring and 2 ears, the top surface of support ring is the support plane, 2 ears are fixed symmetrically in the both sides of support ring, the hoisting frame includes the connecting ring and 2 lifting lugs, the inner ring of connecting ring is the screw hole, the bottom surface of connecting ring is the supported plane, 2 lifting lugs are fixed symmetrically in the both sides of connecting ring, the connecting ring is placed on the support ring, the supported plane of connecting ring and the support plane of support ring are pasted, and the supported plane of connecting ring and the support plane of support ring between support ring are equipped with the positioning structure, the positioning structure includes the positioning block set up on one of connecting ring or support ring and the positioning groove set up on the other of connecting ring or support ring, and the positioning block and positioning groove are mutually nested positioning. The utility model has the characteristics such as simple structure, reasonable in design, when applying, can make the axis of long axle workpiece and the liquid level of electroplating liquid perpendicular, to guarantee the evenness of long axle workpiece chrome plating.

Description

Technical Field

[0001] This utility model relates to the field of hoisting fixture technology, and in particular to a special tooling fixture for electroplating. Background Technology

[0002] To coat the surface of long shaft workpieces with a hard, smooth, and corrosion-resistant protective layer, enabling them to have a longer lifespan, more stable performance, and lower maintenance costs in harsh working environments, manufacturers typically perform chrome plating on long shaft workpieces during production. Currently, while tooling fixtures can clamp long shaft workpieces and they can be lifted by hoisting equipment to place them into the electroplating tank, the axis of the long shaft workpiece is often difficult to align perpendicularly to the surface of the electroplating solution. This compromises the alignment of the axis with the anode during electroplating, resulting in uneven chrome plating, a phenomenon known as "pigmentation bias," and negatively impacting product quality. Utility Model Content

[0003] The purpose of this utility model is to provide a special tooling fixture for electroplating. This special tooling fixture has the advantages of simple structure, reasonable design, and the ability to make the axis of long shaft workpiece perpendicular to the liquid surface of electroplating solution during application, so as to ensure the uniformity of chromium plating on long shaft workpiece.

[0004] The technical solution of this utility model is implemented as follows: A special tooling fixture for electroplating, specifically comprising a support frame and a lifting frame; the support frame includes a support ring and two hanging ears; the top surface of the support ring is a support plane; the two hanging ears are symmetrically fixed on both sides of the support ring; the lifting frame includes a connecting ring and two lifting ears; the inner ring of the connecting ring is a threaded hole, and the bottom surface of the connecting ring is a supported plane; the two lifting ears are symmetrically fixed on both sides of the connecting ring; the connecting ring is placed on the support ring, the supported plane of the connecting ring fits against the support plane of the support ring, and a positioning structure is provided between the supported plane of the connecting ring and the support plane of the support ring; the positioning structure includes a positioning block provided on one of the connecting ring or the support ring and a positioning groove provided on the other of the connecting ring or the support ring, the positioning block and the positioning groove being nested and positioned together.

[0005] In this design, the support frame is installed in the well-type electroplating tank via hanging lugs. Adjustment is made to ensure the supporting plane of the support ring in the electroplating tank is parallel to the surface of the electroplating solution. The threaded hole of the connecting ring of the lifting frame is threadedly connected to a long shaft workpiece with external threads at one end. The lifting equipment then lifts the lifting frame and the long shaft workpiece together using the lifting lugs. After the other end of the long shaft workpiece passes through the support ring, the supported plane of the connecting ring aligns with the supporting plane of the support ring, ensuring that the axis of the long shaft workpiece is perpendicular to the surface of the electroplating solution. This ensures that the axis of the long shaft workpiece is parallel to the anode during electroplating, allowing for uniform chromium plating without uneven chromium distribution, significantly improving product quality. Furthermore, the design includes a positioning structure to prevent the long shaft workpiece from rotating relative to this design, further enhancing the quality of the chromium plating.

[0006] The positioning structure includes two positioning blocks on the connecting ring and two positioning slots on the supporting ring. The two positioning blocks are symmetrically arranged on both sides of the inner ring of the connecting ring; the two positioning slots are symmetrically arranged on both sides of the inner ring of the supporting ring. Each positioning block corresponds one-to-one with its corresponding positioning slot, and the positioning blocks and their corresponding slots are nested within each other. This symmetrical distribution of the positioning structure facilitates alignment during application, making it easier to place the connecting ring onto the supporting ring.

[0007] The positioning block is a convex rib with a triangular cross-section; the positioning groove is a V-shaped groove that matches and nests with the positioning block. This structure ensures that the supported plane of the connecting ring and the supported plane of the supporting ring fit tightly together, resulting in better structural stability after the connecting ring and the supporting ring are assembled, thus ensuring that the axis of the long shaft workpiece can be perpendicular to the surface of the electroplating solution during use.

[0008] The connecting ring comprises two first semi-ring components; each first semi-ring component has a positioning block on its bottom surface, and the two ends of the two first semi-ring components are aligned and fixed into a ring shape by screws; each lifting lug is simultaneously connected to the end of the two first semi-ring components. This solution is applied to the electroplating process of heavy, long shaft workpieces. The connecting ring will be relatively large in volume. By adopting a structure of split molding and then reassembling, this solution is easier to manufacture.

[0009] The support ring comprises two second semi-ring components; each second semi-ring component has a positioning groove on its top surface. The two ends of the two second semi-ring components face each other and are fixed into a ring shape with screws. Two lugs correspond one-to-one with the two second semi-ring components, and the lugs are connected together with their corresponding second semi-ring components. This solution is applied to the electroplating process of heavy, long, long shaft workpieces. The support ring will be relatively large in size. By adopting a structure of split molding and then reassembling, this solution is easier to manufacture.

[0010] Each hook includes a mounting plate and a connecting plate; the middle of the mounting plate is connected to the top of the connecting plate to form a T-shaped structure, and the bottom of the connecting plate is connected to the second semi-ring. The plate-shaped hooks are easy to manufacture as a single piece, further reducing production costs.

[0011] The line connecting the centers of the two hanging lugs is perpendicular to the line connecting the centers of the two suspension lugs. This prevents the suspension lugs from colliding with the hanging lugs and causing damage during use.

[0012] The advantages of this utility model are: simple structure, reasonable design, and the ability to make the axis of the long shaft workpiece perpendicular to the surface of the electroplating solution during application, so as to ensure the uniformity of chromium plating on the long shaft workpiece. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of an embodiment.

[0014] Figure 2 This is a schematic diagram of the disassembly and assembly structure for an embodiment.

[0015] Explanation of reference numerals in the attached drawings: 1-Support bracket; 2-Lifting frame; 3-Supporting ring; 31-Supporting plane; 32-Second half-ring; 4-Hanging lug; 41-Hanging plate; 42-Connecting plate; 5-Connecting ring; 51-Threaded hole; 52-First half-ring; 6-Lifting lug; 7-Positioning structure; 71-Positioning block; 72-Positioning groove. Detailed Implementation

[0016] like Figure 1 , Figure 2As shown, this embodiment of a special tooling fixture for electroplating includes a support frame 1 and a lifting frame 2. The support frame 1 includes a support ring 3 and two hanging ears 4. The top surface of the support ring 3 is a support plane 31. The two hanging ears 4 are symmetrically fixed on both sides of the support ring 3. The lifting frame 2 includes a connecting ring 5 and two lifting ears 6. The inner rings of the connecting ring 5 and the support ring 3 are circular. The inner ring of the connecting ring 5 is a threaded hole 51, and the bottom surface of the connecting ring 5 is a supported plane. The two lifting ears 6 are symmetrically fixed on both sides of the connecting ring 5. The connecting ring 5 is placed on the support ring 3, and the supported plane of the connecting ring 5 fits against the support plane 31 of the support ring 3. A positioning structure 7 is provided between the supported plane of the connecting ring 5 and the support plane 31 of the support ring 3. The positioning structure 7 includes a positioning block 71 provided on the connecting ring 5 and a positioning groove 72 provided on the support ring 3. The positioning block 71 and the positioning groove 72 are nested and positioned with each other. In use, the support frame 1 is installed in the well-type electroplating tank via the hanging lug 4, and the support plane 31 of the support ring 3 in the electroplating tank is adjusted to be parallel to the surface of the electroplating solution in the electroplating tank. The threaded hole 51 of the connecting ring 5 of the hoisting frame 2 is threadedly connected to the long shaft workpiece with external threads at one end. Then, the hoisting equipment lifts the hoisting frame 2 together with the long shaft workpiece through the hoisting lug 6. After the other end of the long shaft workpiece passes through the support ring 3, the supported plane of the connecting ring 5 is made to fit with the support plane 31 of the support ring 3, so that the axis of the long shaft workpiece can be perpendicular to the surface of the electroplating solution. During the electroplating process, it can ensure that the axis of the long shaft workpiece is parallel to the anode, so that the long shaft workpiece can be chromium plated evenly without the phenomenon of uneven chromium plating, which greatly improves the quality of the product. The design of the positioning structure 7 also prevents the long shaft workpiece from rotating relative to this electroplating special tooling fixture, further improving the quality of chromium plating.

[0017] like Figure 1 , Figure 2 As shown, the positioning structure 7 includes two positioning blocks 71 disposed on the connecting ring 5 and two positioning grooves 72 disposed on the supporting ring 3. The two positioning blocks 71 are symmetrically arranged on both sides of the inner ring of the connecting ring 5; the two positioning grooves 72 are symmetrically arranged on both sides of the inner ring of the supporting ring 3. The two positioning blocks 71 and the two positioning grooves 72 correspond one-to-one, and the positioning blocks 71 and their corresponding positioning grooves 72 are nested together. The symmetrical distribution of the positioning structure 7 makes it easier to align during application, making it easier to place the connecting ring 5 on the supporting ring 3.

[0018] like Figure 1 , Figure 2 As shown, the positioning block 71 is a convex rib with a triangular cross-section; the positioning groove 72 is a V-shaped groove that matches and nests with the positioning block 71. This structure allows the supported plane of the connecting ring 5 to fit tightly with the supported plane 31 of the supporting ring 3, resulting in better structural stability after the connecting ring 5 and the supporting ring 3 are assembled, ensuring that the axis of the long shaft workpiece can be perpendicular to the surface of the electroplating solution during use.

[0019] like Figure 1 , Figure 2 As shown, the connecting ring 5 includes two first semi-ring parts 52; each first semi-ring part 52 has a positioning block 71 on its bottom surface, and the two ends of the two first semi-ring parts 52 are aligned and fixed into a ring shape by screws; each lifting lug 6 is connected to the end of the two first semi-ring parts 52 simultaneously. This electroplating special tooling fixture is used in the electroplating process of heavy, long shaft workpieces. The connecting ring 5 will be made relatively large. By adopting a split molding and reassembly structure, the production of this electroplating special tooling fixture is made easier.

[0020] like Figure 1 , Figure 2 As shown, the support ring 3 includes two second semi-ring parts 32; each second semi-ring part 32 has a positioning groove 72 on its top surface, and the two ends of the two second semi-ring parts 32 are aligned and fixed into a ring shape by screws; two hanging ears 4 correspond one-to-one with the two second semi-ring parts 32, and the hanging ears 4 are connected together with their corresponding second semi-ring parts 32. This electroplating special tooling fixture is used in the electroplating process of heavy, long shaft workpieces. The support ring 3 will be made relatively large. By adopting a structure of split molding and then reassembling, the production of this electroplating special tooling fixture is made easier.

[0021] like Figure 1 , Figure 2 As shown, each hook 4 includes a mounting plate portion 41 and a connecting plate portion 42; the middle part of the mounting plate portion 41 is connected to the top end of the connecting plate portion 42 to form a T-shaped structure, and the bottom end of the connecting plate portion 42 is connected to the second semi-ring 32. The plate-shaped hook 4 is convenient to manufacture as a single piece during production, further reducing production costs.

[0022] like Figure 1 As shown, the line connecting the centers of the two lugs 4 is perpendicular to the line connecting the centers of the two hanging lugs 6. This prevents the hanging lugs 6 from colliding with the lugs 4 and being damaged during use.

Claims

1. A special tooling fixture for electroplating, characterized in that: The system includes a support frame and a lifting frame. The support frame includes a support ring and two hanging ears. The top surface of the support ring is a support plane. The two hanging ears are symmetrically fixed on both sides of the support ring. The lifting frame includes a connecting ring and two lifting ears. The inner ring of the connecting ring is a threaded hole, and the bottom surface of the connecting ring is a supported plane. The two lifting ears are symmetrically fixed on both sides of the connecting ring. The connecting ring is placed on the support ring, and the supported plane of the connecting ring fits against the support plane of the support ring. A positioning structure is provided between the supported plane of the connecting ring and the support plane of the support ring. The positioning structure includes a positioning block provided on one of the connecting ring or the support ring and a positioning groove provided on the other of the connecting ring or the support ring. The positioning block and the positioning groove are nested and positioned together.

2. The electroplating-specific tooling fixture according to claim 1, characterized in that: The positioning structure includes two positioning blocks on the connecting ring and two positioning grooves on the supporting ring; the two positioning blocks are symmetrically arranged on both sides of the inner ring of the connecting ring; the two positioning grooves are symmetrically arranged on both sides of the inner ring of the supporting ring; the two positioning blocks and the two positioning grooves correspond one-to-one, and the positioning blocks and their corresponding positioning grooves are nested together.

3. The electroplating-specific tooling fixture according to claim 2, characterized in that: The positioning block is a convex rib with a triangular cross-section; the positioning groove is a V-shaped groove that matches and nests with the positioning block.

4. The electroplating-specific tooling fixture according to claim 3, characterized in that: The connecting ring includes two first semi-ring parts; each first semi-ring part has a positioning block on its bottom surface, and the two ends of the two first semi-ring parts are aligned and fixed into a ring shape by screws; each lifting lug is connected to the end of the two first semi-ring parts at the same time.

5. A special tooling fixture for electroplating according to claim 3 or 4, characterized in that: The supporting ring includes two second semi-ring parts; each second semi-ring part has a positioning groove on its top surface, and the two ends of the two second semi-ring parts are aligned and fixed into a ring shape by screws; two hanging ears correspond one-to-one with the two second semi-ring parts, and the hanging ears are connected together with their corresponding second semi-ring parts.

6. The electroplating-specific tooling fixture according to claim 5, characterized in that: Each hanging ear includes a mounting plate and a connecting plate; the middle part of the mounting plate is connected to the top of the connecting plate to form a T-shaped structure, and the bottom end of the connecting plate is connected to the second half-ring.

7. The electroplating-specific tooling fixture according to claim 1, characterized in that: The line connecting the centers of the two lugs is perpendicular to the line connecting the centers of the two hanging lugs.

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