Automatic linkage clamping fixture

Abstract

The utility model relates to the technical field of clamping fixtures, and discloses an automatic linkage clamping fixture which comprises supporting legs and a clamping workbench, the supporting legs are fixed to the two sides of the bottom of the clamping workbench, an air cylinder is arranged in the center of the bottom of the clamping workbench, a trapezoid block is arranged at the top end of a piston rod of the air cylinder, and the trapezoid block is large in top width and small in size. The sliding clamping block is in an isosceles trapezoid shape, the width of the bottom of the trapezoid block is small, and the two sides of the trapezoid block are inclined planes, the inclined planes on the two sides of the trapezoid block are provided with rounded dovetail blocks, and the inclination of the rounded dovetail blocks is the same as that of the two sides of the trapezoid block. According to the automatic linkage clamping fixture, the workpiece between the sliding clamping block and the fixed clamping block is clamped, the operation difficulty and strength of workers can be reduced through the optimized design and the automatic linkage clamping fixture, the two workpieces can be locked at the same time in a short time, the use of the mechanism is reduced, the machining time is prolonged, and the machining efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of clamping jigs, in particular to an automatic linkage clamping jig. Background Technique

[0002] In the environment of mass production, the limitations of manual clamping are becoming increasingly prominent. It is not only inefficient but also costly in terms of labor. With the rapid development of automation technology, automatic clamping technology has gradually gained favor due to its high efficiency, accuracy, and labor savings.

[0003] For example, the existing Chinese patent (CN205834822U) discloses a cylinder-type linkage jig, including a fixing mechanism. Above the fixing mechanism is provided a clamping mechanism. The fixing mechanism includes a base and a driving wheel arranged inside the base. One side of the driving wheel is welded with a handle. The clamping mechanism includes a left clamping arm and a right clamping arm. A connecting rod is provided on the left clamping arm. The connecting rod is slidably fitted on the base, and the driving wheel abuts against the connecting rod. The right clamping arm is slidably connected to the base, and a cylinder is connected to the outside of the right clamping arm. Compared with the prior art, the cylinder-type linkage jig of this patent technology has a simple structure, low cost, convenient operation, and less manual operation part, which can greatly improve work efficiency.

[0004] However, the above-mentioned prior art and many automatic clamping devices on the current market usually can only clamp one workpiece at a time, which to a certain extent limits the further improvement of production efficiency and production capacity. Summary of the Utility Model

[0005] The purpose of the utility model is to provide an automatic linkage clamping jig to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: an automatic linkage clamping jig, including: support legs and a clamping workbench. The two sides of the bottom of the clamping workbench are fixed with support legs. In the center of the bottom of the clamping workbench is provided a cylinder. The top of the piston rod of the cylinder is provided with a trapezoidal block. The trapezoidal block is an isosceles trapezoid with a large width at the top, a small width at the bottom, and inclined surfaces on both sides. Rounded dovetail blocks are provided on the inclined surfaces on both sides of the trapezoidal block. The rounded dovetail blocks have the same slope as the inclined surfaces on both sides of the trapezoidal block. Rounded corners are opened at the edges of the rounded dovetail blocks. A wedge block is provided outside the rounded dovetail blocks. A sliding clamp block is provided on one side of the wedge block. A fixed clamp block is provided on the top of the clamping workbench on one side of the sliding clamp block. A placement plate is provided in the center of the top of the clamping workbench.

[0007] Further, the side of the wedge block close to the rounded dovetail block is an inclined surface. A rounded dovetail groove is opened on the side of the wedge block close to the rounded dovetail block. The internal contour of the rounded dovetail groove matches the external contour of the rounded dovetail block.

[0008] Further, through holes are formed in the center of the placement plate and the clamping workbench, and the through holes are used for the piston rod of the cylinder to pass through. A countersunk hole is formed in the center of the trapezoidal block, and the piston rod of the cylinder and the trapezoidal block are connected by screws.

[0009] Further, the placement plate is located below the wedge block, and the bottom surface of the wedge block is in contact with the top surface of the placement plate.

[0010] Further, the fixed clamp block is L-shaped. A V-shaped groove is formed on one side of the outer wall of the fixed clamp block, and a V-shaped groove is formed on one side of the sliding clamp block. A workpiece is clamped between the fixed clamp block and the sliding clamp block.

[0011] Further, when the fixed clamp block and the sliding clamp block clamp the workpiece, a gap is left between the bottom surface of the trapezoidal block and the top surface of the placement plate.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] By providing the support legs, the clamping workbench and the trapezoidal block, the present utility model realizes that when the automatic linkage clamping fixture is used, the piston rod of the cylinder descends to drive the trapezoidal block to descend together. When the trapezoidal block descends, the inclined surfaces on both sides will exert a force on the wedge blocks, driving the two wedge blocks to move away from each other, so that the sliding clamp block moves towards the fixed clamp block, and the workpiece between the sliding clamp block and the fixed clamp block is clamped. Through the optimized design, the automatic linkage clamping fixture can reduce the operation difficulty and intensity of workers, and realize the simultaneous locking of two workpieces in a short time, reduce the use of mechanisms, extend the processing time, and improve the processing efficiency. Description of the Drawings

[0014] Figure 1 is a perspective view of an automatic linkage clamping fixture of the present utility model;

[0015] Figure 2 is a schematic structural diagram of the connection of the trapezoidal block of an automatic linkage clamping fixture of the present utility model;

[0016] Figure 3 is a schematic structural diagram of the wedge block of an automatic linkage clamping fixture of the present utility model;

[0017] Figure 4 is Figure 1 the enlarged structural diagram at A in

[0018] In the figure: 1, support legs; 2, clamping workbench; 3, cylinder; 4, trapezoidal block; 5, placement plate; 6, wedge block; 7, sliding clamp block; 8, fixed clamp block; 9, workpiece; 10, filleted dovetail block; 11, filleted chute; 12, countersunk hole; 13, filleted dovetail groove. Detailed Embodiment

[0019] The technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.

[0020] Please refer to Figures 1 - 4 , the present utility model provides a technical solution: an automatic linkage clamping fixture, including: support legs 1 and a clamping workbench 2. Support legs 1 are fixed on both sides of the bottom of the clamping workbench 2. A cylinder 3 is provided in the center of the bottom of the clamping workbench 2. The top end of the piston rod of the cylinder 3 is provided with a trapezoidal block 4. The trapezoidal block 4 is an isosceles trapezoid with a larger width at the top, a smaller width at the bottom, and inclined surfaces on both sides. Rounded dovetail blocks 10 are provided on the inclined surfaces on both sides of the trapezoidal block 4. The inclined degrees of the rounded dovetail blocks 10 and the inclined surfaces on both sides of the trapezoidal block 4 are the same. Rounded corners are provided at the edges of the rounded dovetail blocks 10. A wedge block 6 is provided outside the rounded dovetail blocks 10. A sliding clamping block 7 is provided on one side of the wedge block 6. A fixed clamping block 8 is provided on the top of the clamping workbench 2 on the side of the sliding clamping block 7. A placing plate 5 is provided in the center of the top of the clamping workbench 2. When the piston rod of the cylinder 3 descends, it drives the trapezoidal block 4 to descend together. When the trapezoidal block 4 descends, the inclined surfaces on both sides will exert forces on the wedge blocks 6, driving the two wedge blocks 6 to move away from each other, so that the sliding clamping block 7 moves towards the fixed clamping block 8, and the workpiece 9 between the sliding clamping block 7 and the fixed clamping block 8 is clamped. Through optimized design, the automatic linkage clamping fixture can reduce the operation difficulty and intensity of workers, and realize the simultaneous locking of two workpieces in a short time, reduce the use of mechanisms, extend the processing time, and improve the processing efficiency.

[0021] The side of the wedge block 6 close to the rounded dovetail block 10 is an inclined surface. A rounded dovetail groove 13 is provided on the side of the wedge block 6 close to the rounded dovetail block 10. The internal contour of the rounded dovetail groove 13 matches the external contour of the rounded dovetail block 10. During the sliding process, the rounded corners can reduce the friction between the sliding surfaces, reduce the resistance, and make the sliding smoother. Especially in high-precision or applications that require frequent sliding, the rounded corners can significantly improve the sliding performance. If the dovetail groove is not rounded, its sharp corners may generate additional friction and resistance during the sliding process, affecting the sliding performance. The rounded corners can eliminate the sharp parts at the edges of the dovetail groove, reduce the risk of cuts or damages that may occur during the sliding process, improve the safety of operation, and reducing friction and resistance helps reduce the wear of the sliding surface, thereby improving the wear resistance to a certain extent.

[0022] The placement plate 5 and the clamping workbench 2 are provided with through holes in the center. The through holes are used for the piston rod of the cylinder 3 to pass through. A countersunk hole 12 is provided in the center of the trapezoidal block 4. The piston rod of the cylinder 3 and the trapezoidal block 4 are connected by screws. Through the fixed connection between the trapezoidal block 4 and the piston rod of the cylinder 3, the trapezoidal block 4 can be driven to rise and fall by the cylinder 3, so that the sliding clamping blocks 7 on both sides of the trapezoidal block 4 move.

[0023] The placement plate 5 is located below the wedge block 6. When the bottom surface of the wedge block 6 is in contact with the top surface of the placement plate 5 and the rounded dovetail blocks 10 on both sides of the trapezoidal block 4 exert force on the wedge block 6, a part of the force is downward, causing the wedge block 6 to abut against the placement plate 5, and the other part of the force drives the wedge block 6 to move towards the fixed clamping block 8.

[0024] The fixed clamping block 8 is L-shaped. A V-shaped groove is provided on one side of the outer wall of the fixed clamping block 8. A V-shaped groove is provided on one side of the sliding clamping block 7. A workpiece 9 is clamped between the fixed clamping block 8 and the sliding clamping block 7. The design of the V-shaped groove facilitates the clamping of circular workpieces with different diameters.

[0025] When the fixed clamping block 8 and the sliding clamping block 7 clamp the workpiece 9, a gap is left between the bottom surface of the trapezoidal block 4 and the top surface of the placement plate 5, ensuring that when the workpiece is clamped, the trapezoidal block 4 has room to continue to descend, guaranteeing the adjustment of the clamping force.

[0026] When the automatic linkage clamping fixture is in use, the piston rod of the cylinder 3 descends to drive the trapezoidal block 4 to descend together. When the trapezoidal block 4 descends, the inclined surfaces on both sides will exert force on the wedge block 6, driving the two wedge blocks 6 to move away from each other, so that the sliding clamping block 7 moves towards the fixed clamping block 8, clamping the workpiece 9 between the sliding clamping block 7 and the fixed clamping block 8. Through optimized design, the automatic linkage clamping fixture can reduce the operation difficulty and intensity of workers, and realize the simultaneous locking of two workpieces in a short time, reduce the use of mechanisms, extend the processing time, and improve the processing efficiency.

[0027] Based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Claims

1. An automatic linkage clamping fixture, comprising: Support legs (1) and a clamping workbench (2), characterized in that: support legs (1) are fixed on both sides of the bottom of the clamping workbench (2), a cylinder (3) is provided in the center of the bottom of the clamping workbench (2), the top end of the piston rod of the cylinder (3) is provided with a trapezoidal block (4), the trapezoidal block (4) is in the shape of an isosceles trapezoid with a larger width at the top, a smaller width at the bottom, and inclined surfaces on both sides, rounded dovetail blocks (10) are provided on the inclined surfaces on both sides of the trapezoidal block (4), the rounded dovetail blocks (10) have the same slope as the inclined surfaces on both sides of the trapezoidal block (4), rounded corners are provided at the edges of the rounded dovetail blocks (10), a wedge block (6) is provided outside the rounded dovetail blocks (10), a sliding clamp block (7) is provided on one side of the wedge block (6), a fixed clamp block (8) is provided on one side of the sliding clamp block (7) on the top of the clamping workbench (2), and a placement plate (5) is provided in the center of the top of the clamping workbench (2).

2. The automatic linkage clamping fixture according to claim 1, wherein: The side of the wedge block (6) close to the rounded dovetail block (10) is an inclined surface, and a rounded dovetail groove (13) is provided on the side of the wedge block (6) close to the rounded dovetail block (10), and the inner contour of the rounded dovetail groove (13) matches the outer contour of the rounded dovetail block (10).

3. The automatic linkage clamping fixture according to claim 1, characterized in that: Through holes are provided in the center of the placement plate (5) and the clamping workbench (2), and the through holes are used for the piston rod of the cylinder (3) to pass through. A counterbore (12) is provided in the center of the trapezoidal block (4), and the piston rod of the cylinder (3) and the trapezoidal block (4) are connected by screws.

4. An automatic linkage clamping fixture according to claim 1, characterized in that: The placement plate (5) is located below the wedge block (6), and the bottom surface of the wedge block (6) is in contact with the top surface of the placement plate (5).

5. An automatic linkage clamping fixture according to claim 1, characterized in that: The fixed clamp block (8) is in an L shape, a V-shaped groove is provided on one side of the outer wall of the fixed clamp block (8), a V-shaped groove is provided on one side of the sliding clamp block (7), and a workpiece (9) is clamped between the fixed clamp block (8) and the sliding clamp block (7).

6. The automatic linkage clamping fixture according to claim 5, wherein: When the fixed clamp block (8) and the sliding clamp block (7) clamp the workpiece (9), a gap is left between the bottom surface of the trapezoidal block (4) and the top surface of the placement plate (5).

Images