Workpiece clamp for metal surface treatment

Abstract

The utility model relates to the technical field of metal processing, in particular to a workpiece clamp for metal surface treatment. The device comprises a deck plate, fixing seats are arranged on the two sides of the deck plate respectively, a plurality of telescopic cylinders are installed on the outer side of each fixing seat, a driving frame is installed on the inner side of each fixing seat, piston rods of the telescopic cylinders movably penetrate through the fixing seats and then are connected to the driving frame, and a plurality of sets of self-adaptive clamping structures are arranged on the front side of the driving frame; the clamp is provided with two sets of telescopic cylinders, a plurality of sets of self-adaptive clamping structures are driven by the driving frame to clamp a workpiece at the same time, each clamping head can rotate in a self-adaptive mode according to the edge shape of the workpiece so as to provide enough support for the workpiece, each clamping spring can be contracted in a suitable mode, and therefore the clamping effect is good. Therefore, excessive pressure of a single chuck on the workpiece is prevented, and the clamping stability is guaranteed; each self-adaptive clamping structure works independently, so that the clamp can clamp a plurality of workpieces at the same time on the premise that the sizes of the workpieces accord with each other.

Description

Technical Field

[0001] This utility model relates to the field of metal processing technology, and specifically to a workpiece fixture for metal surface treatment. Background Technology

[0002] Metal surface treatment technology is an important process in the production of metal structures, including grinding, polishing, electroplating and painting. During the grinding and polishing process, the workpiece needs to be fixed with a fixture. Most existing fixtures use a simple threaded clamping structure. However, the fixture structure is fixed, and there are many non-standard workpieces in the process. When processing these workpieces, the stability will be significantly reduced, and the force during the clamping process will be concentrated on a few points, resulting in excessive local pressure, which can easily damage the workpiece. Utility Model Content

[0003] The purpose of this utility model is to provide a reasonably designed workpiece fixture for metal surface treatment that addresses the defects and shortcomings of the existing technology and solves the aforementioned defects.

[0004] To achieve the above objectives, the present invention adopts the following technical solution: it includes a table panel, with fixed seats on both sides of the table panel, several telescopic cylinders installed on the outer side of each fixed seat, and a drive frame installed on the inner side of the fixed seat. The piston rod of the telescopic cylinder moves through the fixed seat and connects to the drive frame. Multiple sets of adaptive clamping structures are provided on the front side of the drive frame.

[0005] Preferably, the adaptive clamping structure includes a movable plate located in front of the drive frame, several guide posts connected to the rear side of the movable plate, a guide sleeve in the drive frame, the guide posts slidably disposed within the guide sleeve, a clamping spring sleeved on the guide post, the clamping spring being located between the movable plate and the drive frame, connectors connected to the upper and lower sides of the front end of the movable plate respectively, a clamp rotatably mounted between the two connectors, and angle return springs connected to the rear sides of the clamp and the movable plate respectively.

[0006] Preferably, the clamp has a "C" shaped structure and the opening faces forward.

[0007] Preferably, all the angle return springs are inclined, and the two angle return springs in front of the movable plate are arranged in a figure-eight shape.

[0008] Preferably, a limit block is connected to the rear end of the guide post.

[0009] Preferably, the front end of the chuck is provided with a flexible pad.

[0010] The beneficial effects of this utility model after adopting the above structure are:

[0011] 1. The clamp of this utility model is equipped with two sets of telescopic cylinders, which drive multiple sets of adaptive clamping structures through a drive frame to clamp the workpiece simultaneously. Each chuck can adaptively rotate according to the edge shape of the workpiece to provide sufficient support for the workpiece, and each clamping spring can be used...

[0012] The clamping mechanism shrinks, thus preventing excessive pressure on the workpiece from a single chuck and ensuring clamping stability.

[0013] 2. In this utility model, each set of adaptive clamping structures works relatively independently. Therefore, provided that the workpiece size is in compliance, the fixture can clamp multiple workpieces at the same time, realizing multi-station operation. Attached Figure Description

[0014] Figure 1 This is a side view of the present invention;

[0015] Figure 2 This is a top view of the present invention;

[0016] Figure 3 yes Figure 2 Enlarged view of A in the middle;

[0017] Figure 4 This is a side view of the adaptive clamping structure in this utility model.

[0018] Explanation of reference numerals in the attached figures:

[0019] 1. Tabletop; 2. Fixed base; 3. Telescopic cylinder; 4. Drive frame; 5. Movable plate; 6. Guide column; 7. Limit block; 8. Clamping spring; 9. Connecting piece; 10. Clamp; 11. Flexible pad; 12. Angle reset spring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] See Figures 1-3 As shown, it includes a platform 1, with fixed seats 2 on both sides of the platform 1. Several telescopic cylinders 3 are installed on the outer side of each fixed seat 2, and a drive frame 4 is installed on the inner side of the fixed seat 2. The piston rod of the telescopic cylinder 3 moves through the fixed seat 2 and is connected to the drive frame 4. Multiple sets of adaptive clamping structures are provided on the front side of the drive frame 4.

[0022] The adaptive clamping structure includes a movable plate 5 located in front of the drive frame 4. Several guide posts 6 are connected to the rear side of the movable plate 5. A guide sleeve is provided in the drive frame 4. The guide posts 6 are slidably disposed in the guide sleeve. A limit block 7 is connected to the rear end of the guide post 6. A clamping spring 8 is sleeved on the guide post 6. The clamping spring 8 is located between the movable plate 5 and the drive frame 4. Connecting parts 9 are respectively connected to the upper and lower sides of the front end of the movable plate 5. A chuck 10 is rotatably installed between the two connecting parts 9. Angle return springs 12 are respectively connected between the rear sides of the chuck 10 and the movable plate 5. The angle return springs 12 are all inclined. The two angle return springs 12 in front of the movable plate 5 are arranged in a figure-eight shape. The chuck 10 has a C-shaped structure and the opening faces forward. A flexible pad 11 is provided at the front end of the chuck 10.

[0023] The principle and usage process of this utility model:

[0024] During operation, the workpiece to be processed is placed on the worktable, and then the telescopic cylinder 3 is activated. The telescopic cylinder 3 pushes the drive frame 4 forward, which in turn drives multiple sets of adaptive clamping structures to move forward simultaneously. When the chuck 10 contacts the workpiece, the chuck 10 can automatically rotate, causing the two front heads of the chuck 10 to fit against the edge of the workpiece. At the same time, the angle return spring 12 is compressed, and with the pressure applied by the telescopic cylinder 3, the clamping spring 8 is also compressed. The elastic force of the clamping spring 8 pushes the chuck 10 in the opposite direction to clamp the workpiece. Since each set of adaptive clamping structures works relatively independently, each set of clamping springs 8 is compressed to different degrees while clamping, so that multiple chucks 10 clamp the workpiece separately. The flexible pad 11 can reduce damage to the surface of the workpiece.

[0025] After processing is completed, the telescopic cylinder 3 retracts, driving the drive frame 4 and the adaptive clamping structure to move backward, the chuck 10 leaves the workpiece surface, and at the same time the clamping spring 8 and the angle return spring 12 release their elastic force, driving the chuck 10 to automatically return to its original position.

[0026] In use, since each chuck 10 works independently, multiple workpieces can be placed on the table 1 at the same time when the workpiece size is small, and the equipment can be started.

[0027] It should be understood that the above-described specific embodiments of this utility model are merely illustrative or explanatory of the principles of this utility model and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of this utility model should be included within the protection scope of this utility model. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A workpiece holder for metal surface treatment comprising a table plate (1), characterized in that: Two sides of the table board (1) are respectively provided with fixing bases (2), a plurality of telescopic cylinders (3) are installed on the outer side of each fixing base (2), a driving frame (4) is installed on the inner side of the fixing base (2), the piston rod of the telescopic cylinder (3) is movably penetrated through the fixing base (2) and connected to the driving frame (4), and a plurality of adaptive clamping structures are arranged on the front side of the driving frame (4).

2. The workpiece clamp for metal surface treatment according to claim 1, characterized by: The adaptive clamping structure comprises a movable plate (5) arranged in front of the driving frame (4), a plurality of guide columns (6) connected to the rear side of the movable plate (5), a guide sleeve arranged in the driving frame (4), the guide column (6) being slidably arranged in the guide sleeve, a clamping spring (8) sleeved on the guide column (6), the clamping spring (8) being located between the movable plate (5) and the driving frame (4), a connecting piece (9) connected to the upper and lower sides of the front end of the movable plate (5), a chuck (10) rotatably arranged between the two connecting pieces (9), and an angle reset spring (12) connected between the rear side of the chuck (10) and the movable plate (5).

3. The workpiece clamp for metal surface treatment according to claim 2, characterized by: The chuck (10) is a "C" shaped structure, and the opening is arranged in the front direction.

4. The workpiece clamp for metal surface treatment according to claim 3, characterized by: The angle reset springs (12) are all arranged in an inclined manner, and the two angle reset springs (12) in front of the movable plate (5) are arranged in an "eight" shape.

5. The workpiece clamp for metal surface treatment according to claim 4, characterized by: The rear end of the guide column (6) is connected with a limiting block (7).

6. The workpiece clamp for metal surface treatment according to claim 5, characterized by: The front end of the chuck (10) is provided with a flexible pad (11).

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