Adjustable coating clamp

Abstract

The utility model discloses an adjustable coating clamp. The adjustable coating clamp comprises a circular truncated cone, an air cylinder, a bracket and a clamping component, the air cylinder is installed below the circular truncated cone through a stand column, and a piston rod of the air cylinder penetrates through the circular hole to be connected with the center of the bracket. The bracket comprises at least three supporting rods which are distributed at equal angles and used for supporting workpieces. And one end of each clamping jaw is mounted on the outer edge of the circular truncated cone, and the other end of each clamping jaw is connected with the corresponding supporting rod through a pivot. When the piston rod of the air cylinder retracts, the bracket moves downwards to drive the clamping jaws to retract inwards to clamp workpieces, and workpieces with different diameters are adapted by adjusting the stroke of the piston rod. The clamping jaw comprises a base, a connecting piece, a grabbing arm, a guide rod and a clamping head, and clamping stability and flexibility are guaranteed. The limiting column and the auxiliary support are arranged at the end of the supporting rod, the gasket is arranged on the boss, and the workpiece positioning precision and the damage prevention effect are improved. The device is simple in structure, convenient to operate and capable of quickly adapting to workpieces of various specifications, and production efficiency and applicability are improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a plated film clamp technical field, concretely relates to an adjustable plated film clamp. BACKGROUND

[0002] In the field of precision manufacturing and surface treatment, plating technology is widely used on various material surfaces. The clamping and fixing of workpieces is a key step, especially for circular sheet-shaped workpieces, which are usually very thin and prone to bending, so a clamp that can firmly clamp without damaging the workpiece is needed during plating.

[0003] Traditionally, for clamping and plating operations of circular sheet-shaped workpieces, the industry generally adopts customized clamp design, i.e., a set of clamp system is specially designed for each size of workpiece. This system usually includes a fixed support structure, and the position of the clamping jaw is adjusted to adapt to different workpiece sizes through manual or automatic control.

[0004] Although the existing technology can meet the plating needs of multiple sizes of workpieces to some extent, the customized design means that a new clamp needs to be redesigned and manufactured whenever a new workpiece size appears, which not only increases the cost but also prolongs the preparation period, so an adjustable plated film clamp is needed to adapt to circular sheet-shaped workpieces of different diameters. SUMMARY

[0005] The utility model aims at overcoming the above-mentioned defects, and provides an adjustable plated film clamp, which realizes quick and accurate clamping and adjustment of circular sheet-shaped workpieces of different diameters through the cooperative work of the cylinder-driven bracket and the clamping jaw assembly.

[0006] Technical scheme: The utility model provides an adjustable plated film clamp, which comprises a circular table, a cylinder, a bracket and a clamping assembly. The circular table is provided with a circular hole in the center, and the cylinder is installed below the circular table through a group of vertical columns. The bracket comprises at least three supporting rods, which are arranged in a scattered manner with the center of the bracket as the center. The piston rod of the cylinder is arranged in the circular hole and connected to the center of the bracket above the circular table. The bracket is used to support the workpiece when the piston rod is extended. The clamping assembly comprises at least three clamping jaws, which are in one-to-one correspondence with the supporting rods. One end of the clamping jaw is installed on the outer edge above the circular table, and the other end is pivotally connected to the supporting rod. When the piston rod of the cylinder is retracted, the bracket is lowered, the supporting rods drive the clamping jaws to shrink inward in the circumferential direction to clamp the workpiece, and the stroke of the piston rod is adjusted to adapt to workpieces of different diameters. Through the cooperative work of the cylinder-driven bracket and the clamping jaw assembly, circular sheet-shaped workpieces of different diameters can be quickly and accurately clamped and adjusted. Specifically, the extension and retraction of the piston rod of the cylinder control the upward and downward movement of the bracket, respectively, and then drive the actions of the supporting rods and the clamping jaws to realize the support and clamping of the workpiece.

[0007] Further, the adjustable coating fixture in the application, the clamping jaw comprises a base, a first connecting piece, a grabbing arm, a first guide rod, a second guide rod, a chuck, the base is installed on the outer edge above the circular table, the connecting piece is respectively pivotally connected with the base and one end of the grabbing arm, the first guide rod and the second guide rod are respectively arranged at the end of the grabbing arm away from the connecting piece, the first guide rod and the second guide rod are arranged in parallel and vertically to the grabbing arm, the two ends of the first guide rod and the second guide rod are connected through the second connecting piece, the chuck is installed on the second connecting piece and used for clamping the outer edge of the workpiece. The base is fixed on the outer edge of the circular table, and the first connecting piece is pivotally connected with the grabbing arm, so that the grabbing arm can move flexibly. The first guide rod and the second guide rod are arranged in parallel and vertically to the grabbing arm, and the two ends are connected through the second connecting piece, so as to provide stable support for the chuck. The chuck is installed on the second connecting piece and used for directly clamping the outer edge of the workpiece. The structure design makes the clamping jaw more fit the outer edge of the workpiece with different shapes when clamping the workpiece, the connecting piece ensures the flexibility of the grabbing arm, and the guide rod ensures the stability and directivity of the movement of the chuck, so that the workpiece can be reliably clamped.

[0008] Further, the adjustable coating fixture in the application, the end of the supporting rod is provided with a pair of limiting columns, the limiting columns are used for limiting the outer edge of the workpiece, the end of the supporting rod is rotatably connected with the first guide rod, a circular boss is arranged at the center of the bracket, and the boss is used for supporting the workpiece when the piston rod is ejected. The pair of limiting columns arranged at the end of the supporting rod can limit the outer edge of the workpiece, prevent the workpiece from moving radially on the bracket, ensure the position accuracy of the workpiece on the fixture, the end of the supporting rod is rotatably connected with the first guide rod, cooperates with the movement of other components of the clamping jaw, realizes the inward shrinking and opening action of the clamping jaw in the circumferential direction, and thus clamps or loosens the workpiece with different diameters.

[0009] Further, the adjustable coating fixture in the application, a gasket is arranged on the boss, and an auxiliary support is further arranged at the end of the supporting rod away from the boss, and the auxiliary support is used for supporting the workpiece together with the boss. The gasket arranged on the boss can play a buffering role when the boss contacts the workpiece, so as to avoid that the workpiece is damaged due to hard contact with the boss. The auxiliary support arranged at the end of the supporting rod away from the boss forms multi-point support together with the boss, and supports the workpiece together, thereby improving the support effect on the workpiece.

[0010] Further, the adjustable coating fixture in the application, one side of the supporting rod facing the circular table is provided with a missing part, when the piston rod of the air cylinder is retracted to drive the bracket to move downward, the first connecting piece connected with the grabbing arm rotates accordingly, and the missing part is used for accommodating the connecting part of the first connecting piece and the grabbing arm. The missing part is arranged on the side of the supporting rod facing the circular table, so as to avoid interference and collision between the components.

[0011] Furthermore, in this application, an adjustable coating fixture is provided, wherein the chuck is cylindrical with a notch at its upper end, the notch being adapted to the outer edge of the workpiece. The upper notch adapting to the outer edge of the workpiece allows for a tight fit against the edge of a circular, thin-film workpiece, achieving stable clamping of the workpiece.

[0012] As can be seen from the above technical solution, this utility model has the following beneficial effects:

[0013] 1. The adjustable coating fixture of this utility model adopts a unique mechanical structure in which the cylinder drives the bracket and the gripper assembly to work together. It abandons the traditional customized fixture design mode. By adjusting the piston rod stroke, it can quickly adapt to the clamping requirements of circular thin sheet workpieces of different diameters. It greatly reduces the cost of redesigning and manufacturing fixtures due to new workpiece sizes, significantly shortens the production preparation cycle, and improves production efficiency and economic benefits.

[0014] 2. The adjustable coating fixture of this utility model, through the structural design of the gripper, can better fit the outer edge of the workpiece, ensuring the stability and reliability of clamping. The combined design of the gripper base, connecting parts, gripping arms, guide rods, and chucks allows the gripper to move flexibly when clamping the workpiece. At the same time, the parallel arrangement of the guide rods ensures the stability and guidance of the chuck movement, preventing the workpiece from shifting or being damaged during clamping. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of an adjustable coating fixture according to the present invention;

[0016] Figure 2 This is a schematic diagram of an adjustable coating fixture for removing workpieces and a bracket structure according to the present invention;

[0017] Figure 3 This is a schematic diagram of an adjustable coating fixture for removing workpieces according to this utility model;

[0018] Figure 4 for Figure 3 Enlarged schematic diagram of region A in the middle.

[0019] Explanation of reference numerals in the accompanying drawings: 1-Frustum, 2-Cylinder, 3-Bracket, 31-Bracket rod, 311-Limiting post, 312-Auxiliary support, 313-Notch, 32-Boss, 321-Washer, 4-Clamping assembly, 41-Gripper, 411-Base, 412-First connector, 413-Grip arm, 415-First guide rod, 416-Second guide rod, 417-Clamping head, 4171-Notch, 418-Second connector, 5-Column. Detailed Implementation

[0020] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments.

[0021] Example 1

[0022] Reference Figure 1 , Figure 2 , Figure 3 and Figure 4 An adjustable coating fixture includes a frustum 1, a cylinder 2, a bracket 3, and a clamping assembly 4. The frustum 1 has a circular hole in the center, and the cylinder 2 is mounted below the frustum 1 via four columns 5. The piston rod passes through the circular hole and is connected to the center of the bracket 3.

[0023] The bracket 3 consists of three support rods 31, which are evenly distributed at an angle around the center of the bracket 3 to ensure that the workpiece is evenly supported. Each support rod 31 has a pair of limiting posts 311 at its end to limit the position of the workpiece's outer edge and prevent radial movement. A circular boss 32 is located at the center of the bracket 3, and a gasket 321 is mounted on the boss 32 to provide cushioning and prevent damage to the workpiece due to hard contact. Furthermore, an auxiliary support 312 is provided at the end of the support rod 31 away from the boss. The auxiliary support 312 and the boss 32 together form a multi-point support structure, further enhancing the stability of the workpiece.

[0024] The gripping assembly 4 includes three grippers 41, each corresponding to a support rod 31, positioned below the support rod 31, with one end mounted on the outer edge of the frustum 1 and the other end pivotally connected to the support rod 31. Each gripper 41 includes a base 411, a first connector 412, a gripping arm 413, a first guide rod 415, a second guide rod 416, and a chuck 417. The base 411 is fixed to the outer edge of the frustum 1 and pivotally connected to one end of the gripping arm 413 via the first connector 412, allowing the gripping arm 413 to rotate flexibly. The first guide rod 415 and the second guide rod 416 are perpendicularly inserted through the end of the gripping arm 413 away from the first connector 412 and connected at both ends via the second connector 418, providing stable support for the chuck 417. The chuck 417 is cylindrical with a notch 4171 at its upper end, designed to conform to the outer edge of the workpiece for a tight fit and secure gripping.

[0025] When it is necessary to clamp or release the workpiece, the height of the bracket 3 is adjusted by controlling the extension and retraction of the piston rod of the cylinder 2. When the piston rod retracts, it drives the bracket 3 to move downward, and the support rod 31 descends accordingly, guiding the gripper 41 to retract circumferentially inward, thereby clamping the workpiece. The support rod 31 has a notch 313 on the side facing the frustum 1. When it moves downward, the corresponding first connecting piece 412 connected to the gripper arm 413 rotates accordingly. The notch 313 is used to accommodate the connection between the first connecting piece 412 and the gripper arm 413. Conversely, when the piston rod pushes out, the bracket rises and the gripper opens, facilitating the loading and unloading of the workpiece. By adjusting the stroke of the cylinder piston rod, the fixture of this invention can quickly adapt to circular thin-sheet workpieces of different diameters, improving work efficiency and flexibility.

[0026] This embodiment demonstrates in detail how to utilize the specific structural design described above, combined with the positions and connection methods of the various components shown in the accompanying drawings, to achieve a highly efficient, precise, and adaptable coating fixture system suitable for processing workpieces of various specifications, significantly improving production efficiency and product quality. Figure 1 It demonstrates the overall structure of the entire system; Figure 2 The internal structure is clearly visible after the workpiece and bracket parts have been removed. Figure 3 The workpiece has been removed, highlighting the details of the gripping components; Figure 4 It then displays in magnified mode. Figure 3 The key area A in the image highlights the shape of the clamp notch.

[0027] The above embodiments are exemplary and are intended to illustrate the technical concept and features of this utility model, so that those skilled in the art can understand the content of this utility model and implement it accordingly. They should not be construed as limiting the scope of protection of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be covered within the scope of protection of this utility model.

Claims

1. An adjustable coating fixture for clamping circular thin sheet workpieces, characterized in that: include: Frustum (1), cylinder (2). The truncated cone (1) has a circular hole in the center, and the cylinder (2) is installed below the truncated cone (1) through a set of columns (5); The bracket (3) includes at least three support rods (31), which are arranged in a symmetrical arrangement with the center of the bracket (3) as the center. The piston rod of the cylinder (2) passes through the circular hole and is connected to the center of the bracket (3) above the truncated cone (1). The bracket (3) is used to support the workpiece when the piston rod is pushed out. The clamping assembly (4) includes at least three jaws (41), each of which corresponds to a support rod (31). One end of each jaw (41) is mounted on the outer edge of the upper part of the truncated cone (1), and the other end is pivotally connected to the support rod (31). When the piston rod of the cylinder (2) retracts, it drives the support bracket (3) to move down. The support rod (31) drives the jaws (41) to retract circumferentially to clamp the workpiece. The piston rod stroke is adjusted to accommodate workpieces of different diameters.

2. The adjustable coating fixture according to claim 1, characterized in that: The gripper (41) includes a base (411), a first connector (412), a gripping arm (413), a first guide rod (415), a second guide rod (416), and a chuck (417). The base (411) is mounted on the outer edge of the frustum (1). The first connector (412) is pivotally connected to one end of the base (411) and the gripping arm (413). The first guide rod (415) and the second guide rod (416) are respectively inserted through the end of the gripping arm (413) away from the first connector (412). The first guide rod (415) and the second guide rod (416) are arranged parallel to each other and perpendicular to the gripping arm (413). The two ends of the first guide rod (415) and the second guide rod (416) are connected by the second connector (418). The chuck (417) is mounted on the second connector (418) and is used to clamp the outer edge of the workpiece.

3. An adjustable coating fixture according to claim 2, characterized in that: The end of the support rod (31) is provided with a pair of limiting posts (311), which are used to limit the outer edge of the workpiece. The end of the support rod (31) is rotatably connected to the first guide rod (415). The center of the bracket (3) is provided with a circular boss (32), which is used to support the workpiece when the piston rod is pushed out.

4. An adjustable coating fixture according to claim 3, characterized in that: The boss (32) is provided with a pad (321), and the end of the support rod (31) away from the boss (32) is also provided with an auxiliary support (312). The auxiliary support (312) is used to support the workpiece together with the boss (32).

5. An adjustable coating fixture according to claim 2, characterized in that: The support rod (31) has a notch (313) on the side facing the truncated cone (1). When the piston rod of the cylinder (2) retracts and drives the bracket (3) to move down, the corresponding first connecting piece (412) connected to the grab arm (413) rotates accordingly. The notch (313) is used to accommodate the connection between the first connecting piece (412) and the grab arm (413).

6. An adjustable coating fixture according to claim 2, characterized in that: The chuck (417) is cylindrical and has a notch (4171) at its upper end, which is adapted to the outer edge of the workpiece.

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