Pre-pressing device for steel plate spring

Abstract

The utility model discloses a pre-pressing device for a steel plate spring, and relates to the technical field of pre-pressing devices. The device comprises a workbench, a protective cover is fixedly connected to the top end of the workbench, a supporting plate is fixedly connected to the position, between the side walls of the protective cover, of the center of the bottom, sliding grooves are symmetrically formed in the position, close to the center, in the supporting plate, and sliding blocks are symmetrically connected to the interiors of the two sliding grooves in a sliding mode. Fixing plates are symmetrically and fixedly connected to the positions, close to the center of the supporting plate, of the top ends of the two sliding blocks, a rotating frame is rotationally connected to the center of the top end in the protection cover, and electric cylinders are symmetrically and fixedly connected to the positions, close to the center, of the bottom end of the rotating frame. According to the limiting device, the first motor is operated, then under the mutual cooperation of the double-thread screw, the sliding block and the fixing plate, the limiting work of spring pieces of different types and lengths can be conveniently completed, and then the problems that the position of a clamping plate is fixed, cannot be adjusted, and cannot adapt to bending of steel plate springs of different lengths are solved.

Description

Technical Field

[0001] This utility model relates to the technical field of pre-compression devices, specifically a pre-compression device for steel leaf springs. Background Technology

[0002] Leaf springs are the most widely used elastic element in automotive suspensions. They consist of several alloy spring leaves of equal width but unequal length (thickness may be equal or unequal), forming an elastic beam of approximately equal strength. The manufacturing process of leaf springs involves cutting the raw alloy spring leaves, machining the center hole and rivet holes, machining the leaf ends, punching positioning convex bulges, rolling and enclosing the lugs, quenching, tempering, and pressure testing to form the final product.

[0003] In a Chinese patent (CN218395455U) titled "A Pre-compression Machine for Leaf Springs," the cylinder rod of cylinder two drives the lifting seat to rise, lifting the leaf spring from the placement seat. An anti-slip pad increases the friction between the lifting seat and the leaf spring, preventing slippage. The cylinder rod of cylinder one moves the clamping plates, which interact to clamp the two sides of the leaf spring, preventing it from shifting during bending. The cylinder rod of cylinder three lowers the protective plate, which prevents broken spring leaves from breaking during bending, thus protecting workers from injury.

[0004] However, this device still has shortcomings. The position of the clamping plate is fixed and cannot be adjusted, making it unsuitable for bending steel leaf springs of different lengths and limiting its applicability. Furthermore, since the alloy spring sheets vary in length and require assembly, they need to be pre-pressed before drilling and assembly, which increases the processing steps and prolongs the processing time of the steel leaf springs. To address these issues, the inventor proposes a pre-pressing device for steel leaf springs. Utility Model Content

[0005] To address the issues of fixed clamping plate positions that cannot be adjusted, inability to accommodate bending of leaf springs of different lengths, and the increased processing steps required for alloy spring sheets after pre-pressing and drilling, this invention aims to provide a pre-pressing device for leaf springs.

[0006] To solve the above technical problems, the present invention adopts the following technical solution: a preloading device for leaf springs, comprising a workbench, a protective cover fixedly connected to the top of the workbench, a support plate fixedly connected between the side walls of the protective cover and at the bottom center, symmetrically provided grooves inside the support plate near the center, sliding blocks symmetrically slidably connected inside the two grooves, and fixed plates symmetrically fixedly connected to the tops of the two sliding blocks near the center of the support plate, a rotating frame rotatably connected to the top center inside the protective cover, and electric cylinders symmetrically fixedly connected to the bottom center of the rotating frame, one of the electric cylinders having a pressure head body fixedly connected to its output end, and the pressure head body being located above the center of the support plate, and the other electric cylinder having a mounting box fixedly connected to its output end, with a drill bit rotatably connected to the bottom center of the mounting box.

[0007] Preferably, a motor is fixedly connected inside the mounting box, the output end of the motor is fixedly connected to the drill bit through the mounting box, a connecting plate is fixedly connected to the top of the mounting box and near one side, and a telescopic guide rod is fixedly connected to the bottom of the rotating frame and above the connecting plate, and the bottom end of the telescopic guide rod is fixedly connected to the connecting plate.

[0008] Preferably, a second motor is fixedly connected to the top of the protective cover near the center, and the output end of the second motor passes through the protective cover and is fixedly connected to the rotating frame. A double-headed screw is rotatably connected between the side walls of the protective cover and below the support plate, and both sliding blocks are threadedly rotatably connected to the double-headed screw.

[0009] Preferably, a motor is fixedly connected to the side end of the protective cover near the bottom center, and the output end of the motor passes through the protective cover and is fixedly connected to a double-headed screw.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] 1. In this utility model, by running a motor, and then through the cooperation between the double-headed screw, the sliding block and the fixed plate, the limiting work of spring plates of different lengths can be completed, thereby solving the problem that the position of the clamping plate is fixed and cannot be adjusted, and cannot be adapted to the bending of steel plate springs of different lengths.

[0012] 2. In this utility model, the drilling of the spring sheet is completed by operating the electric cylinder and then cooperating with the motor, the pressure head body, the drill bit, and the rotating frame. This solves the problem of increasing the processing flow of alloy spring sheets by pre-pressing them before drilling and assembling them. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0015] Figure 2 This is a cross-sectional view of the protective cover of this utility model.

[0016] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0017] In the diagram: 1. Workbench; 11. Motor 1; 12. Double-ended screw; 13. Support plate; 2. Protective cover; 21. Rotating frame; 22. Motor 2; 23. Electric cylinder; 24. Pressure head body; 25. Mounting box; 26. Motor 3; 27. Drill bit; 28. Connecting plate; 29. ​​Telescopic guide rod; 3. Sliding block; 31. Fixing plate. Detailed Implementation

[0018] 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.

[0019] Example: Figure 1-3 As shown, this utility model provides a technical solution: a preloading device for leaf springs, including a workbench 1, a protective cover 2 fixedly connected to the top of the workbench 1, a support plate 13 fixedly connected between the side walls of the protective cover 2 and at the bottom center, symmetrically provided grooves inside the support plate 13 near the center, sliding blocks 3 symmetrically slidably connected inside the two grooves, and fixed plates 31 symmetrically fixedly connected to the tops of the two sliding blocks 3 near the center of the support plate 13, a rotating frame 21 rotatably connected to the top center of the protective cover 2, and electric cylinders 23 symmetrically fixedly connected to the bottom end of the rotating frame 21 near the center, one of the electric cylinders 23 has a pressure head body 24 fixedly connected to its output end, and the pressure head body 24 is located above the center of the support plate 13, the other electric cylinder 23 has a mounting box 25 fixedly connected to its output end, and a drill bit 27 rotatably connected to the bottom center of the mounting box 25, wherein the pressure head body 24 and the drill bit 27 are symmetrically distributed, so that the drill bit 27 is also at the same level as the center of the support plate 13 after rotation.

[0020] The mounting box 25 has a motor 26 fixedly connected inside, and the output end of the motor 26 passes through the mounting box 25 and is fixedly connected to the drill bit 27.

[0021] By adopting the above technical solution, the motor 26 is operated, thereby causing the fixedly connected drill bit 27 to rotate.

[0022] A connecting plate 28 is fixedly connected to the top of the mounting box 25 and near one side. A telescopic guide rod 29 is fixedly connected to the bottom of the rotating frame 21 and above the connecting plate 28, and the bottom of the telescopic guide rod 29 is fixedly connected to the connecting plate 28.

[0023] By adopting the above technical solution, the connecting plate 28 and the telescopic guide rod 29 are set to facilitate the lifting and lowering of the mounting box 25 and prevent the phenomenon of tipping over.

[0024] A motor 22 is fixedly connected to the top of the protective cover 2 near the center. The output end of the motor 22 passes through the protective cover 2 and is fixedly connected to the rotating frame 21.

[0025] By adopting the above technical solution, the second motor 22 is operated, thereby causing the fixedly connected rotating frame 21 to rotate.

[0026] A double-ended screw 12 is rotatably connected between the side walls of the protective cover 2 and below the support plate 13, and both sliding blocks 3 are threadedly rotatably connected to the double-ended screw 12.

[0027] By adopting the above technical solution, after the double-headed screw 12 rotates, the two sliding blocks 3 connected by the threaded rotation can move towards each other.

[0028] A motor 11 is fixedly connected to the side end of the protective cover 2 and near the bottom center. The output end of the motor 11 passes through the protective cover 2 and is fixedly connected to the double-headed screw 12.

[0029] By adopting the above technical solution, the motor 11 is operated, thereby causing the fixedly connected double-headed screw 12 to rotate.

[0030] Working principle: When using this device, the spring sheet to be pre-compressed is first placed between two fixed plates 31. Then, by running the motor 11, the fixed double-headed screw 12 is rotated, which causes the two sliding blocks 3 connected by the thread to move the fixed plates 31 towards each other. This achieves the effect of adjusting the distance between the two fixed plates 31, so as to complete the limiting work of spring sheets of different models and lengths. This solves the problem that the position of the clamping plate is fixed and cannot be adjusted, and cannot be adapted to the bending of steel plate springs of different lengths.

[0031] After the spring sheet is positioned, one of the electric cylinders 23 is operated to lower the fixedly connected pressure head body 24. Since the pressure head body 24 is located above the center of the support plate 13, the pre-compression of the spring sheet can be completed. Then, the pressure head body 24 is raised and the second working motor 22 is operated, which causes the fixedly connected rotating frame 21 to rotate. Once the drill bit 27 has rotated to the center above the support plate 13, the other electric cylinder 23 and the third motor 26 are operated simultaneously to allow the drill bit 27 to rotate during descent, thereby completing the drilling of the spring sheet. This solves the problem of increasing the processing flow of alloy spring sheets by pre-compressing them before drilling and assembly.

[0032] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A preloading device for leaf springs, comprising a worktable (1), characterized in that: The top of the workbench (1) is fixedly connected to a protective cover (2). A support plate (13) is fixedly connected between the side walls and at the bottom center of the protective cover (2). A sliding groove is symmetrically opened inside the support plate (13) and near the center. A sliding block (3) is symmetrically slidably connected inside the two sliding grooves. A fixed plate (31) is symmetrically fixedly connected at the top of the two sliding blocks (3) near the center of the support plate (13). A rotating frame (21) is rotatably connected at the top center of the protective cover (2). An electric cylinder (23) is symmetrically fixedly connected at the bottom end of the rotating frame (21) near the center. A pressure head body (24) is fixedly connected to the output end of one of the electric cylinders (23), and the pressure head body (24) is located above the center of the support plate (13). A mounting box (25) is fixedly connected to the output end of the other electric cylinder (23). A drill bit (27) is rotatably connected to the bottom center of the mounting box (25).

2. The preloading device for leaf springs as described in claim 1, characterized in that, The mounting box (25) is fixedly connected to a motor (26), and the output end of the motor (26) passes through the mounting box (25) and is fixedly connected to the drill bit (27).

3. The preloading device for leaf springs as described in claim 1, characterized in that, A connecting plate (28) is fixedly connected to the top of the mounting box (25) and near one side. A telescopic guide rod (29) is fixedly connected to the bottom of the rotating frame (21) and above the connecting plate (28), and the bottom of the telescopic guide rod (29) is fixedly connected to the connecting plate (28).

4. The preloading device for leaf springs as described in claim 1, characterized in that, The protective cover (2) has a motor (22) fixedly connected to the top near the center. The output end of the motor (22) passes through the protective cover (2) and is fixedly connected to the rotating frame (21).

5. A preloading device for leaf springs as described in claim 1, characterized in that, A double-ended screw (12) is rotatably connected between the side walls of the protective cover (2) and below the support plate (13), and both sliding blocks (3) are threadedly rotatably connected to the double-ended screw (12).

6. A preloading device for leaf springs as described in claim 5, characterized in that, A motor (11) is fixedly connected to the side end of the protective cover (2) and near the bottom center. The output end of the motor (11) passes through the protective cover (2) and is fixedly connected to the double-headed screw (12).

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