A multi-station stamping device for shock absorber spring washers

Abstract

This invention belongs to the field of metal processing technology, specifically relating to a multi-station stamping device for shock absorber spring washers. The device includes a hydraulic press and a stamping die. The stamping die comprises a base and a module. A shaft is integrally formed on the right side of the base, and an output shaft is rotatably connected to the left side. The right side of the module is rotatably connected to the left end of the shaft. A snap-fit ​​groove is formed on the left side of the module. A snap-fit ​​block is integrally formed on the right end of the output shaft and slidably connected to the snap-fit ​​groove. Several station slots and sliding grooves are formed on one side of the module. Through holes connect the station slots and sliding grooves. Stamping rods are slidably connected to the inner walls of the through holes, and sliders are integrally formed on the outer sides of the stamping rods. This device solves the problem that current stamping methods for shock absorber spring washers cannot achieve simultaneous multi-station stamping and burr removal during stamping, resulting in significantly reduced production efficiency and quality.

Description

Technical Field

[0001] This invention belongs to the field of metal processing technology, and specifically relates to a multi-station stamping device for shock absorber spring washers. Background Technology

[0002] With the continuous development of the automotive industry, shock absorbers, as core components of the suspension system, are directly affected by the processing quality of their internal spring washers, which in turn impacts the shock absorber's performance and lifespan. Spring washers are typically produced through stamping processes. Due to their high requirements for flatness and edge quality, traditional single-station stamping methods are no longer sufficient to meet the demands of modern industry for high-efficiency, high-quality production. However, existing multi-station stamping equipment still faces challenges in processing such precision washers, including low process integration, difficulty in burr removal, and complex equipment structures.

[0003] A search revealed a CNC punching machine and its punching method, published on October 22, 2019, with publication number CN110355251A. This patent achieves multi-station feed punching by using a hydraulic rod, a four-jaw chuck, and a rectangular fixing block, and can quickly check the concentricity of the punch head. However, this technical solution mainly focuses on the control and detection of CNC precision, lacking a synchronous processing mechanism for burrs on the edges of spring washers during the punching process. Furthermore, its structure using a four-jaw chuck and spot-welded fixed rectangular block is redundant, resulting in insufficient overall flexibility of the device. For miniaturized continuous punching scenarios such as spring washers, the structure exhibits excessive complexity, increasing maintenance costs.

[0004] A search revealed a stamping device and its stamping process, published on December 23, 2022, with publication number CN115502283A. This patent achieves continuous processing of workpieces across multiple workstations by setting up multiple transfer mechanisms and stamping mechanisms, effectively improving overall production efficiency. However, this technical solution still has limitations in practical applications: on the one hand, although the device achieves multi-station transfer, the stamping station and the deburring station are usually separate, failing to achieve synchronous deburring during stamping, which often requires additional grinding processes, reducing the continuity of production; on the other hand, due to the setting of multiple independent transfer mechanisms and flipping components, the transmission chain of the entire device is too long, occupying a large amount of physical space and having a high structural complexity.

[0005] The aforementioned problems indicate that existing stamping devices, while achieving multi-station collaborative processing, struggle to balance processing efficiency and finished product quality (especially burr control), and the structural simplification of the devices still needs improvement. Therefore, this invention provides a multi-station stamping device for shock absorber spring washers, aiming to achieve efficient operation with simultaneous multi-station processing, and to simultaneously remove burrs during the stamping process, while simplifying the overall structure of the device, thereby meeting the demand for efficient and integrated stamping equipment in the shock absorber component manufacturing field. Summary of the Invention

[0006] The purpose of this invention is to provide a multi-station stamping device for shock absorber spring washers to solve the problems mentioned in the background art.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a multi-station stamping device for shock absorber spring washers, comprising a hydraulic press and a stamping die, wherein the stamping die comprises a base and a module, wherein a shaft is integrally formed on the right side of the base and an output shaft is rotatably connected to the left side, the right side of the module is rotatably connected to the left end of the shaft, a snap-fit ​​groove is provided on the left side of the module, and a snap-fit ​​block is integrally formed on the right end of the output shaft and slidably connected to the snap-fit ​​groove; a plurality of station slots and a sliding groove are provided on one side of the module, a through hole is connected between the station slot and the sliding groove, a stamping rod is slidably connected to the inner wall of the through hole, and a slider is integrally formed on the outer side of the stamping rod, the slider is slidably connected in the sliding groove, and a spring is provided between the slider and the bottom of the inner wall of the sliding groove; the uppermost stamping rod extends out of the module, and the upper end face of the remaining stamping rods is flush with the bottom surface of the station slot.

[0008] The present invention further illustrates that the output shaft is fixedly connected to the output end of the external drive motor, and the external drive motor is signal connected to the hydraulic punch press.

[0009] The present invention further illustrates that the inner walls of several of the sliding grooves are provided with spiral grooves, the bottom of the slider is provided with a groove, and a ball is embedded in the groove, the ball being rolled and connected in the spiral groove.

[0010] The present invention further illustrates that the outer sides of several of the aforementioned stamping rods are toothed.

[0011] The present invention further illustrates that both the bottom surface of the slider and the bottom surface of the slide groove are provided with annular grooves, and both the upper and lower ends of the spring are embedded in the annular grooves.

[0012] The present invention further illustrates that a rotating hole is provided on the right side of the module, and an inclined groove, a connecting groove, and an arc-shaped groove are provided on the inner wall of the rotating hole, and the inclined groove, the connecting groove, and the arc-shaped groove are connected to each other. A ball bearing is tumblingly connected to the outer wall of the shaft, and the ball bearing is tumblingly connected in the inclined groove, the connecting groove, and the arc-shaped groove.

[0013] The present invention further illustrates that a spring is provided between the left side of the module and the left side of the base, and the spring is sleeved on the outside of the output shaft. The snap-fit ​​groove and the snap-fit ​​block are rectangular in shape with mutually matching dimensions.

[0014] The present invention further explains that after the module is rotated, it moves back and forth left and right.

[0015] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: The multi-station stamping device adopted by the present invention can complete the processing of multiple products at the same time, greatly improve processing efficiency, increase output, have a simple overall structure, low manufacturing cost, can be applied to all hydraulic presses, and collect the finished products after processing for the next stamping operation. The automated operation further improves processing efficiency. During the stamping process, the stamping rod moves downward and rotates at the same time, punching holes in the shock absorber spring pads. The rotation of the stamping rod causes its toothed part to rub against the inner wall of the hole, which helps to remove burrs around the punched holes, thereby improving production quality. The stamping and deburring processes are carried out simultaneously to reduce one process, greatly improve production efficiency, and the overall structure is simple and easy to process. After stamping is completed, the module will shake left and right once each time the processed product is thrown out of the station slot. This will ensure that the product is thrown out fully and prevent the processed product from accumulating in the module and affecting the next processing. At the same time, the shaking will also shake out the removed burrs from the module, so as to avoid the stamping process being affected by burrs and causing jamming, thus ensuring the smoothness of the stamping process. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the stamping die of the present invention; Figure 2 This is a left-side sectional view of the stamping die of the present invention; Figure 3 This is a right-side sectional view of the stamping die of the present invention; Figure 4 This is a plan view of the stamping die of the present invention; Figure 5 This is an exploded view of the stamping die of the present invention; Figure 6 This is a schematic diagram of the stamping rod structure of the present invention; Figure 7 This is a modular plan view of the present invention; In the diagram: 1. Base; 11. Shaft; 111. Ball bearing; 12. Output shaft; 121. Snap-fit ​​block; 2. Module; 21. Station slot; 22. Slide groove; 221. Spiral groove; 23. Through hole; 24. Stamping rod; 241. Slider; 242. Ball; 25. Spring; 26. Rotary hole; 261. Inclined groove; 262. Connecting groove; 263. Arc groove; 3. Spring. Detailed Implementation

[0017] The following detailed, non-limiting description of the technical solution of the present invention, in conjunction with preferred embodiments and accompanying drawings, is provided. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0018] Please see Figures 1-7 The present invention provides a technical solution: a multi-station stamping device for shock absorber spring washers, including a hydraulic press and a stamping die. The stamping die includes a base 1 and a module 2. A shaft 11 is integrally formed on the right side of the base 1, and an output shaft 12 is rotatably connected to the left side. The right side of the module 2 is rotatably connected to the left end of the shaft 11. A snap-fit ​​groove is opened on the left side of the module 2. A snap-fit ​​block 121 is integrally formed on the right end of the output shaft 12 and is slidably connected to the snap-fit ​​groove. A number of work station slots 21 and slide grooves 22 are provided on one side of module 2. Through holes 23 are connected between the work station slots 21 and slide grooves 22. A stamping rod 24 is slidably connected to the inner wall of the through hole 23. A slider 241 is integrally formed on the outer side of the stamping rod 24. The slider 241 is slidably connected in the slide groove 22. A spring 25 is provided between the slider 241 and the bottom of the inner wall of the slide groove 22. The uppermost stamping rod 24 extends out of module 2, and the upper end face of the remaining stamping rods 24 is flush with the bottom surface of the work station slot 21; The operator places the processed shock absorber spring washer into the work station slot 21, and then drives the hydraulic punch press to run. The hydraulic punch press impacts the uppermost punch rod 24, causing the punch rod 24 to move downward and drive the slider 241 to slide downward along the inner wall of the slide groove 22. The spring 25 deforms under force, and the lower end of the punch rod 24 slides through the through hole 23 and extends out of the through hole 23 to impact the shock absorber spring washer, thus punching it. After the middle of the uppermost shock absorber spring washer is punched with a hole, the lower end of the uppermost punch rod 24 enters the lower work station slot 21 and impacts the lower punch rod 24. This process is repeated to punch all the shock absorber spring washers in the work station slot 21. After punching is completed, the hydraulic punch press resets, and the reaction force of the spring 25 causes several punch rods 24 to reset. Multiple products are processed at the same time, which greatly improves processing efficiency and increases output. The overall structure is simple, the manufacturing cost is low, and it can be applied to all hydraulic punch presses.

[0019] The output shaft 12 is fixedly connected to the output end of the external drive motor, and the external drive motor is connected to the hydraulic punch press for signal transmission. After the hydraulic press completes one stamping and resets, the external drive motor is controlled by a signal to drive the output shaft 12 to rotate rapidly. The output shaft 12 rotates rapidly through the snap-fit ​​block 121 and the snap-fit ​​groove. Its right side rotates through the shaft 11, thereby throwing the stamped shock absorber spring pads and stamped waste material out of the workstation slot 21. The finished products are collected for the next stamping operation. The automated operation further improves the processing efficiency.

[0020] The inner walls of several sliding grooves 22 are provided with spiral grooves 221, the bottom of the slider 241 is provided with a groove, and a ball 242 is embedded in the groove. The ball 242 is rolled and connected in the spiral groove 221.

[0021] The outer sides of several stamping rods 24 are toothed; During the stamping process, the stamping rod 24 slides downward, causing the slider 241 to slide downward along the inner wall of the groove 22. This causes the ball 242 to move downward, making the ball 242 roll in the spiral groove 221 and generating axial force. The ball 242 drives the slider 241 to move downward and rotate at the same time, thereby driving the stamping rod 24 to move downward and rotate at the same time. After the shock absorber spring washer is stamped out of the hole, the rotation of the stamping rod 24 causes its toothed part to rub against the inner wall of the hole, so as to remove the burrs around the stamped hole, thereby improving the production quality. The stamping and deburring processes are carried out simultaneously to reduce one process, greatly improve production efficiency, and the overall structure is simple and easy to process.

[0022] Both the bottom surface of the slider 241 and the bottom surface of the slide groove 22 are provided with annular grooves, and both the upper and lower ends of the spring 25 are embedded in the annular grooves. When the stamping rod 24 is pressed downward, its rotation speed is relatively high due to the high speed. At this time, the upper and lower ends of the spring 25 slide in the annular groove, which can reduce the wear of the spring 25 and increase the service life of the structure. Moreover, it is also smoother than the slider 241 driving the stamping rod 24 to rotate, thereby improving the deburring effect. For the overall structure within module 2, if replacement or maintenance is required, simply lift the stamping rod 24, then remove the ball 242. The lower end of the stamping rod 24 will disengage from the through hole 23, thus allowing the stamping rod 24 to be removed. This makes the replacement of the structure convenient and easy to operate.

[0023] A rotating hole 26 is provided on the right side of module 2. The inner wall of the rotating hole 26 is provided with a slanted groove 261, a connecting groove 262 and an arc groove 263, and the slanted groove 261, the connecting groove 262 and the arc groove 263 are connected to each other. A ball bearing 111 is rotatably connected to the outer wall of the shaft 11, and the ball bearing 111 is rotatably connected in the slanted groove 261, the connecting groove 262 and the arc groove 263.

[0024] A spring 3 is provided between the left side of module 2 and the left side of base 1, and the spring 3 is sleeved on the outside of output shaft 12. The snap-fit ​​groove and snap-fit ​​block 121 are rectangular in shape with matching dimensions. After stamping is completed, the external drive motor runs, throwing the processed product out of module 2. Module 2 rotates, and the rotating hole 26 on its right side rotates synchronously, causing the ball bearings 111 on the outside of the shaft 11 to roll in the inclined groove 261, generating axial force and pushing module 2 to the left. The spring spring 3 is compressed and deformed. At the same time, the locking block 121 and the locking groove move relative to each other and slide inside. When the ball bearings 111 roll to the connection between the inclined groove 261 and the connecting groove 262, the external drive motor rotates to its limit position, and the axial force disappears. The spring spring 3 then releases its pressure. The reaction force pushes module 2 to quickly reset to the right. After the external drive motor resets, the ball bearing 111 rolls back into the inclined groove 261 through the arc groove 263. This causes module 2 to sway left and right each time the processed product is thrown out of the station slot 21, which can fully throw the product out and prevent the processed product from accumulating in module 2 and affecting the next processing. At the same time, the shaking process can also shake out the removed burrs from module 2 to avoid the stamping process being affected by burrs and causing jamming, thus ensuring the smoothness of the stamping process.

[0025] After module 2 rotates, it moves back and forth left and right; When module 2 rotates, it wobbles left and right. This wobbling motion causes spring 25 to wobble, ensuring that its upper and lower ends are always embedded in the annular groove to prevent misalignment and structural wear.

[0026] In the description of this invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0027] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features, and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A multi-station press apparatus for shock absorber spring washers, comprising a hydraulic press and a press die, characterized by: The stamping die comprises a base (1) and a module (2), the right side of the base (1) is integrally formed with a shaft rod (11), the left side is rotationally connected with an output shaft (12), the right side of the module (2) is rotationally connected with the left end of the shaft rod (11), the left side of the module (2) is provided with a clamping groove, the right end of the output shaft (12) is integrally formed with a clamping block (121) and is slidably connected with the clamping groove; A plurality of work station grooves (21) and sliding grooves (22) are formed in one side of the module (2), a through hole (23) is connected between the work station groove (21) and the sliding groove (22), stamping rods (24) are slidably connected to the inner walls of the through hole (23), sliding blocks (241) are integrally formed on the outer sides of the stamping rods (24), the sliding blocks (241) are slidably connected in the sliding grooves (22), and springs (25) are arranged between the sliding blocks (241) and the inner wall bottoms of the sliding grooves (22). The uppermost stamping rod (24) extends out of the module (2), and the upper end faces of the remaining stamping rods (24) are flush with the bottom faces of the work station grooves (21).

2. The multi-station punching device for shock absorber spring gaskets according to claim 1, characterized in that: The output shaft (12) is fixedly connected with the output end of an external driving motor, and the external driving motor is signal-connected with a hydraulic punch.

3. A multi-station press apparatus for shock absorber spring washers as defined in claim 2, wherein: The inner walls of the sliding grooves (22) are all provided with spiral grooves (221), the bottoms of the sliding blocks (241) are provided with recesses, balls (242) are embedded in the recesses, and the balls (242) are rollingly connected in the spiral grooves (221).

4. A multi-station press apparatus for shock absorber spring washers as defined in claim 3, wherein: The outer sides of the stamping rods (24) are all toothed.

5. A multi-station press apparatus for shock absorber spring washers as defined in claim 4, wherein: The bottoms of the sliding blocks (241) and the bottom faces of the sliding grooves (22) are all provided with annular grooves, and the upper and lower ends of the spring (25) are embedded in the annular grooves.

6. A multi-station press apparatus for shock absorber spring washers as defined in claim 5, wherein: The right side of the module (2) is provided with a rotating hole (26), the inner wall of the rotating hole (26) is provided with an inclined groove (261), a connecting groove (262) and an arc-shaped groove (263), the inclined groove (261), the connecting groove (262) and the arc-shaped groove (263) are connected with each other, the outer wall of the shaft rod (11) is rollingly connected with a ball (111), and the ball (111) is rollingly connected in the inclined groove (261), the connecting groove (262) and the arc-shaped groove (263).

7. A multi-station press apparatus for shock absorber spring washers as defined in claim 6, wherein: A resilient spring (3) is arranged between the left side of the module (2) and the left side of the base (1), the resilient spring (3) is sleeved on the outer side of the output shaft (12), and the clamping groove and the clamping block (121) are rectangular in shape and have mutually matched sizes.

8. A multi-station press apparatus for shock absorber spring washers as defined in claim 7, characterized in that: After the module (2) is rotated, it reciprocates leftward and rightward.

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