Automobile plate spring positioning and punching device

Abstract

The utility model relates to the technical field of automobile plate spring punching, and discloses an automobile plate spring positioning and punching device which comprises a frame and a hydraulic table, a hydraulic lever is fixedly connected to the bottom of the frame, a punching assembly is installed at the bottom of the hydraulic lever, a shell is fixedly connected to the bottom of the hydraulic lever, a driving assembly is installed in the shell, and the driving assembly is connected with the hydraulic table. A moving block is installed on the outer side of the driving assembly and slidably connected to the interior of the shell, a first motor is fixedly connected to the bottom of the moving block, a grinding wheel is installed at the output end of the first motor, the driving assembly comprises a threaded rod, and the threaded rod is rotatably connected to the interior of the shell. According to the spring steel punching device, the grinding wheel is driven by the first motor to grind an open hole and remove burrs generated after punching, the spring steel is fixed by extruding the positioning plate through the spring, and follow-up deviation is prevented through the intermittent device.

Description

Technical Field

[0001] This utility model relates to the field of automotive leaf spring punching technology, and in particular to an automotive leaf spring positioning punching device. Background Technology

[0002] Leaf springs are the most traditional elastic element in automotive suspension systems. They are mainly composed of multiple alloy spring steel plates of unequal length, stacked together in a shape resembling leaf blades, hence the name leaf spring. Their core functions are to support the vehicle's weight, cushion road impacts, and provide damping through inter-leaf friction. The spring steel plates are grouped together using a center bolt, hinged to the frame at both ends via lugs, and connected to the axle via U-bolts. Therefore, during leaf spring production, the spring steel plates need to be punched to facilitate subsequent stacking and securing.

[0003] In current technology, punching technology is mostly cold punching, which uses a hydraulic bar to squeeze the spring steel to directly extrude the required opening size. However, burrs will appear at the extrusion point, affecting the mutual fixation of the spring steel. In addition, the punching head will rub against the opening of the spring steel, causing the spring steel to be lifted and shifted in position, resulting in different opening positions for subsequent spring steel. To solve the above problems, a positioning punching device for automotive leaf springs is proposed. Utility Model Content

[0004] To overcome the above deficiencies, this utility model provides an automotive leaf spring positioning punching device, which aims to improve the problems in the prior art where burrs appear after punching, affecting the mutual fixation of the spring steel, and the punching head will lift the spring steel under friction, causing the subsequent hole position to shift.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A positioning punching device for automotive leaf springs includes a frame and a hydraulic table. A hydraulic rod is fixedly connected to the bottom of the frame. A punching assembly is installed at the bottom of the hydraulic rod. A housing is fixedly connected to the bottom of the hydraulic rod. A drive assembly is installed inside the housing. A moving block is installed on the outside of the drive assembly. The moving block is slidably connected inside the housing. A motor is fixedly connected to the bottom of the moving block. A grinding wheel is installed at the output end of the motor.

[0007] The drive assembly includes a threaded rod rotatably connected inside the housing, a moving block threadedly connected to the outer periphery of the threaded rod, a worm gear fixedly connected to one end of the threaded rod, a worm rotatably connected to the left side of the housing, the worm and the worm gear meshing with each other, a limit plate fixedly connected inside the housing, a limit rod fixedly connected to the middle of the limit plate, and the limit rod slidably connected inside the moving block;

[0008] As a further description of the above technical solution:

[0009] The punching assembly includes a punching block, which is fixedly connected to the bottom of the hydraulic rod. A punching head is fixedly connected to the bottom of the punching block. Telescopic rods are fixedly connected to both sides of the bottom of the punching block. A positioning plate is fixedly connected to the other end of the telescopic rods. A spring is sleeved on the outer side of the telescopic rods.

[0010] As a further description of the above technical solution:

[0011] The hydraulic platform is fixedly connected to a base on its right side. A fixed plate 1 and a fixed plate 2 are fixedly connected to the top of the base. A roller 2 is rotatably connected to the inner side of the fixed plate 1. A motor 2 is fixedly connected to the outer side of the fixed plate 2. A disc is fixedly connected to the output end of the motor 2. A lever is fixedly connected to the center of the disc. An intermittent wheel is fixedly connected to the outer side of the roller 2. Multiple evenly distributed grooves are formed on the outer circumference of the intermittent wheel. A limit block is slidably connected inside the fixed plate 1. A lead screw is threaded inside the limit block. A roller 1 is rotatably connected to the center of the limit block. A telescopic rod 2 is fixedly connected inside the fixed plate 2. The roller 1 is rotatably connected to the working end of the telescopic rod 2.

[0012] As a further description of the above technical solution:

[0013] The hydraulic table has an opening inside;

[0014] As a further description of the above technical solution:

[0015] A bracket is fixedly connected to the top of the hydraulic platform, and the bracket is fixedly connected to the bottom of the frame.

[0016] As a further description of the above technical solution:

[0017] A mold is fixedly connected to the top of the hydraulic platform;

[0018] As a further description of the above technical solution:

[0019] A knob is rotatably connected to the outer side of the outer casing, and the knob is fixedly connected to one end of the worm gear.

[0020] As a further description of the above technical solution:

[0021] A knob is fixedly connected to the top of the lead screw.

[0022] This utility model has the following beneficial effects:

[0023] 1. In this utility model, the punching assembly and the outer shell are moved together by a hydraulic lever. The motor drives the grinding wheel to rotate and grind the hole after punching. The moving block can be moved by rotating the worm gear and driving the worm wheel to rotate, thereby driving the threaded rod to rotate and adjusting the grinding position. This solves the problem of burrs appearing at the hole after cold punching and facilitates the fixation of the spring steels.

[0024] 2. In this utility model, the hydraulic lever drives the punching block to press down together, thereby causing the telescopic rod to retract as it is pressed down. At the same time, the spring will squeeze the positioning plate, making the positioning plate tightly fit against the surface of the spring steel. After the punching head finishes punching, the spring steel will not be directly lifted up, thus achieving the purpose of fixing the spring steel. Secondly, the motor drives the disc to rotate, causing the lever to engage in the groove in the intermittent wheel, allowing the roller to rotate intermittently, so that the spring steel is intermittently squeezed in. This ensures that the spring steel will not be lifted up after the hole is opened, and also restricts the position of the spring steel, so that the subsequent hole opening positions are the same. Attached Figure Description

[0025] Figure 1 This is a three-dimensional schematic diagram of a positioning punching device for automotive leaf springs proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the bracket structure of an automotive leaf spring positioning punching device proposed in this utility model;

[0027] Figure 3 This is a schematic diagram of the drive assembly of a car leaf spring positioning punching device proposed in this utility model;

[0028] Figure 4 This is a schematic diagram of the punching assembly structure of an automotive leaf spring positioning punching device proposed in this utility model;

[0029] Figure 5 This is a schematic diagram of the structure of a roller in a positioning punching device for automotive leaf springs proposed in this utility model.

[0030] Figure 6 This is a schematic diagram of the intermittent wheel structure of an automotive leaf spring positioning punching device proposed in this utility model.

[0031] Legend:

[0032] 1. Frame; 2. Hydraulic lever; 3. Knob 1; 4. Housing; 5. Motor 1; 6. Grinding wheel; 7. Mold; 8. Hydraulic table; 9. Exhaust port; 10. Base; 11. Lead screw; 12. Limiting block; 13. Positioning plate; 14. Spring; 15. Knob 2; 16. Telescopic rod 1; 17. Punching head; 18. Punching block; 19. Fixing plate 1; 20. Motor 2; 21. Bracket; 22. Roller 1; 23. Limiting plate; 24. Limiting rod; 25. Worm gear; 26. Worm wheel; 27. Moving block; 28. Threaded rod; 29. ​​Intermittent wheel; 30. Groove; 31. Disc; 32. Lever; 33. Roller 2; 34. Telescopic rod 2; 35. Fixing plate 2. Detailed Implementation

[0033] 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.

[0034] Reference Figure 1 and Figure 3 An embodiment of this utility model provides: a positioning punching device for automotive leaf springs, including a frame 1 and a hydraulic platform 8. A hydraulic rod 2 is fixedly connected to the bottom of the frame 1. A punching assembly is installed at the bottom of the hydraulic rod 2. The punching assembly is driven by the hydraulic rod 2 to perform punching work. A housing 4 is fixedly connected to the bottom of the hydraulic rod 2. The housing 4 moves downward together with the punching assembly. A drive assembly is installed inside the housing 4. A moving block 27 is installed on the outside of the drive assembly. The moving block 27 is slidably connected inside the housing 4 for adjusting the position of the moving block 27. A motor 5 is fixedly connected to the bottom of the moving block 27. A grinding wheel 6 is installed at the output end of the motor 5. The motor 5 drives the grinding wheel 6 to grind the opening of the spring steel.

[0035] Reference Figure 3 The drive assembly includes a threaded rod 28, which is rotatably connected inside the housing 4. A moving block 27 is threadedly connected to the outer periphery of the threaded rod 28. A worm gear 26 is fixedly connected to one end of the threaded rod 28. A worm 25 is rotatably connected to the left side of the housing 4. The worm 25 and the worm gear 26 mesh with each other. Driving the worm 25 drives the worm gear 26, thereby driving the threaded rod 28. A limit plate 23 is fixedly connected inside the housing 4. A limit rod 24 is fixedly connected to the middle of the limit plate 23. The limit rod 24 is slidably connected inside the moving block 27, limiting the direction of movement of the moving block 27. The burrs after the opening are ground off, which facilitates the mutual fixation of multiple spring steels.

[0036] Reference Figure 2 and Figure 4The punching assembly includes a punching block 18, which is fixedly connected to the bottom of the hydraulic rod 2. A punching head 17 is fixedly connected to the bottom of the punching block 18. Telescopic rods 16 are fixedly connected to both sides of the bottom of the punching block 18. A positioning plate 13 is fixedly connected to the other end of the telescopic rod 16. A spring 14 is sleeved on the outside of the telescopic rod 16. A mold 7 is fixedly connected to the top of the hydraulic table 8. During punching, the telescopic rod 16 and the positioning plate 13 are pressed against each other by the spring 14. The positioning plate 13 is tightly attached to the surface of the spring steel, so that the spring steel is fixed on the mold 7. Then the punching head 17 presses the spring steel to complete the punching.

[0037] Reference Figure 1 , Figure 5 and Figure 6 A base 10 is fixedly connected to the right side of the hydraulic platform 8. A fixing plate 19 and a fixing plate 35 are fixedly connected to the top of the base 10. A roller 33 is rotatably connected to the inner side of the fixing plate 19. A motor 20 is fixedly connected to the outer side of the fixing plate 35. A disc 31 is fixedly connected to the output end of the motor 20. A lever 32 is fixedly connected to the middle of the disc 31. An intermittent wheel 29 is fixedly connected to the outer side of the roller 33. Multiple evenly distributed grooves 30 are formed on the outer circumference of the intermittent wheel 29. The disc 31 is driven to rotate by the motor 2 35, which in turn drives the lever 32 to rotate. The lever 32 will briefly engage with the grooves 30. Next, the intermittent wheel 29 rotates intermittently, and then the second roller 33 also rotates intermittently. The fixed plate 19 is internally connected to a limit block 12, and the limit block 12 is internally threaded with a lead screw 11. The middle of the limit block 12 is rotatably connected to a first roller 22. The fixed plate 25 is internally fixedly connected to a second telescopic rod 34. The first roller 22 is rotatably connected to the working end of the second telescopic rod 34. Adjusting the distance between the first roller 22 and the second roller 33 facilitates the extrusion of the spring steel into the mold 7, while controlling the entry speed. This achieves the effect of preventing the spring steel from being directly lifted and controlling the position of the spring steel to prevent deviation.

[0038] Reference Figure 1 and Figure 2 The hydraulic table 8 has a sluice gate 9 inside, from which the scrap material after punching will leak out. The top of the hydraulic table 8 is fixedly connected to a bracket 21, which is fixedly connected to the bottom of the frame 1 to prevent the frame 1 from tipping over. The outer side of the outer shell 4 is rotatably connected to a knob 3, which is fixedly connected to one end of the worm gear 25 to facilitate the rotation of the worm gear 25. The top of the lead screw 11 is fixedly connected to a knob 15 to facilitate the rotation of the lead screw 11.

[0039] Working principle: First, the hydraulic lever 2 drives the punching assembly and the outer shell 4 to move downward together. At the same time, the working end of the motor 5 drives the grinding wheel 6 to rotate, thereby grinding the opening. In addition, the worm 25 rotates, causing the worm wheel 26 and the threaded rod 28 to rotate together, thereby moving the moving block 27 in position, achieving the effect of removing the burrs from the opening and facilitating the fixation between the spring steel.

[0040] Secondly, the punch block 18 is moved downward by the hydraulic lever 2, and then the telescopic rod 16 is compressed by the spring 14, so that the positioning plate 13 is tightly attached to the surface of the spring steel. Then the punch head 17 punches holes, and then the motor 25 drives the disc 31 to rotate. Then the lever 32 drives the intermittent wheel 29 to rotate, so that the roller 2 33 moves intermittently, so that the spring steel is slowly squeezed into the mold 7, so that the spring steel is not lifted by the punch head 17, and also indirectly controls the position of the subsequent spring steel, preventing the hole position from shifting.

[0041] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A positioning punching device for automotive leaf springs, comprising a frame (1) and a hydraulic table (8), characterized in that: A hydraulic rod (2) is fixedly connected to the bottom of the frame (1). A punching assembly is installed at the bottom of the hydraulic rod (2). A housing (4) is fixedly connected to the bottom of the hydraulic rod (2). A drive assembly is installed inside the housing (4). A moving block (27) is installed on the outside of the drive assembly. The moving block (27) is slidably connected inside the housing (4). A motor (5) is fixedly connected to the bottom of the moving block (27). A grinding wheel (6) is installed at the output end of the motor (5). The drive assembly includes a threaded rod (28) rotatably connected inside the housing (4), and a moving block (27) threadedly connected to the outer periphery of the threaded rod (28). One end of the threaded rod (28) is fixedly connected to a worm gear (26), and a worm (25) is rotatably connected to the left side of the housing (4). The worm (25) and the worm gear (26) mesh with each other. A limiting plate (23) is fixedly connected inside the housing (4), and a limiting rod (24) is fixedly connected in the middle of the limiting plate (23). The limiting rod (24) is slidably connected inside the moving block (27).

2. The automotive leaf spring positioning punching device according to claim 1, characterized in that: The punching assembly includes a punching block (18), which is fixedly connected to the bottom of the hydraulic rod (2). A punching head (17) is fixedly connected to the bottom of the punching block (18). Telescopic rods (16) are fixedly connected to both sides of the bottom of the punching block (18). A positioning plate (13) is fixedly connected to the other end of the telescopic rod (16). A spring (14) is sleeved on the outside of the telescopic rod (16).

3. The automotive leaf spring positioning punching device according to claim 1, characterized in that: The hydraulic platform (8) is fixedly connected to a base (10) on its right side. The top of the base (10) is fixedly connected to a first fixed plate (19) and a second fixed plate (35). The inner side of the first fixed plate (19) is rotatably connected to a second roller (33). The outer side of the second fixed plate (35) is fixedly connected to a second motor (20). The output end of the second motor (20) is fixedly connected to a disc (31). The middle part of the disc (31) is fixedly connected to a lever (32). The outer side of the second roller (33) is fixedly connected to... An intermittent wheel (29) is connected to the plate. The intermittent wheel (29) has multiple evenly distributed grooves (30) on its outer periphery. A limit block (12) is slidably connected inside the first fixed plate (19). A lead screw (11) is threaded inside the limit block (12). A roller (22) is rotatably connected to the middle of the limit block (12). A telescopic rod (34) is fixedly connected inside the second fixed plate (35). The roller (22) is rotatably connected to the working end of the telescopic rod (34).

4. The automotive leaf spring positioning punching device according to claim 1, characterized in that: The hydraulic table (8) has an opening (9) inside.

5. The automotive leaf spring positioning punching device according to claim 1, characterized in that: The top of the hydraulic platform (8) is fixedly connected to a bracket (21), which is fixedly connected to the bottom of the frame (1).

6. The automotive leaf spring positioning punching device according to claim 1, characterized in that: The top of the hydraulic platform (8) is fixedly connected to the mold (7).

7. The automotive leaf spring positioning punching device according to claim 1, characterized in that: A knob (3) is rotatably connected to the outside of the outer shell (4), and the knob (3) is fixedly connected to one end of the worm (25).

8. The automotive leaf spring positioning punching device according to claim 3, characterized in that: A knob two (15) is fixedly connected to the top of the lead screw (11).

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