A continuous punching device for metal pressings

Abstract

This utility model relates to the technical field of stamping devices, and in particular to a continuous stamping device for metal products. It includes a base, with supporting legs mounted on the bottom of the base, a bracket mounted on the upper side of the base, a rotary ejection mechanism mounted above the base, and a stamping mechanism mounted above the bracket. This continuous stamping device for metal products, through the rotary ejection mechanism, achieves intermittent precise positioning of the mold and automatic ejection of the stamped workpiece, eliminating the need for manual removal, avoiding workpiece scratches and mold damage, improving product qualification rate and reducing mold maintenance costs. Simultaneously, combined with the precision guiding and buffering design of the stamping mechanism, it effectively ensures high precision and stability in the stamping process, meeting the production requirements for minute tolerances in metal products, and significantly improving production efficiency and product quality.

Description

Technical Field

[0001] This utility model relates to the field of stamping equipment technology, and in particular to a continuous stamping device for metal products. Background Technology

[0002] Stamping equipment is a mechanical device that uses stamping dies under the action of a press to apply pressure to metal or non-metal sheets to produce plastic deformation, separation or forming, thereby obtaining parts of the required shape and size. It is widely used in many fields such as automobile manufacturing, aerospace, and electronics. Traditional stamping equipment has problems such as low automation and low production efficiency, requires frequent manual loading and unloading, and is difficult to achieve continuous uninterrupted operation. Therefore, there is a particular need for a continuous stamping equipment for metal products.

[0003] Chinese patent CN222370126U, published on January 21, 2025, discloses a stamping device for metal product manufacturing. This device allows for processing by having workers remove and replace the first processed workpiece, completing one processing cycle without stopping the machine. By adjusting the position of the die core, it can adapt to different sizes of fixed die bases, improving efficiency. However, this stamping device requires manual removal of the processed workpiece. If the workpiece fits tightly with the die, external tools are needed for removal. Using tools can easily scratch the workpiece surface, affecting product yield. Frequent tool use can also damage the die surface, shortening its lifespan and increasing maintenance costs. Furthermore, relying on a simple adjustment mechanism to position the die core makes it difficult to guarantee long-term stable processing accuracy when facing high-precision, small-tolerance metal product stamping requirements. Utility Model Content

[0004] The purpose of this invention is to provide a continuous stamping device for metal products to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a continuous stamping device for metal pressed products, comprising a base, a support leg installed at the bottom of the base, a bracket installed on the upper side of the base, a rotating ejection mechanism provided above the base, and a stamping mechanism provided above the bracket;

[0006] The rotary ejection mechanism includes a first motor installed inside a base. A sleeve is mounted above the base. A ratchet is connected to the output end of the first motor, and a drive shaft is connected above the ratchet. An elastic element is installed inside the sleeve, and a pawl is connected to one end of the elastic element. The pawl meshes with the ratchet. A turntable is connected to the outer end of the drive shaft. A mold is mounted above the turntable, and a top plate is slidably connected to the inner side of the mold. A motor housing is mounted above the center of the turntable, and a second motor is installed inside the motor housing. A screw is connected to the output end of the second motor, and a screw collar is connected to the surface of the screw. A push rod is connected to the side of the screw collar, and a push block is connected to one end of the push rod. The top end of the push block is connected to the bottom end of the top plate. A limit groove is formed on the inner side of the turntable.

[0007] Preferably, the support legs are provided in four identical sets at the bottom of the base, and are symmetrically distributed at the four corners of the bottom of the base with respect to the central axis of the base.

[0008] Preferably, the ratchet, under the action of the elastic element, cooperates with the pawl to form a unidirectional intermittent rotation structure, and the mold has four identical sets above the turntable, which are distributed in a "+" shape with the center of the turntable.

[0009] Preferably, the push rod has four identical sets on the surface of the screw collar, and under the action of the second motor, the push block slides up and down in the limiting groove.

[0010] Preferably, the stamping mechanism includes a hydraulic cylinder mounted on the top of the bracket. The output end of the hydraulic cylinder is connected to a hydraulic rod. A telescopic tube is connected to the top of the bracket. A limit plate is slidably connected inside the telescopic tube. A guide block is connected to the side of the limit plate. A guide groove is formed on the inner side of the telescopic tube. A telescopic rod is connected to the bottom of the limit plate. A buffer spring is connected to the outer side of the telescopic rod. A lower pressure plate is connected to the bottom of both the hydraulic rod and the telescopic rod. A slider is connected to the side of the lower pressure plate. A sliding groove is formed on the inner side of the bracket. A stamping head is connected to the bottom of the lower pressure plate.

[0011] Preferably, the limiting plate, under the action of the guide block, drives the telescopic rod to slide up and down inside the telescopic tube through the guide groove, and the outer wall size of the guide block matches the inner wall size of the guide groove.

[0012] Preferably, the position of the slider corresponds to the position of the groove, and the size of the slider is precisely matched with the size of the groove.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: This continuous stamping device for metal products, through the setting of a rotary ejection mechanism, realizes the intermittent precise positioning of the mold and the automatic ejection of the stamped workpiece, eliminating the need for manual removal, avoiding workpiece scratches and mold damage, improving product qualification rate and reducing mold maintenance costs. At the same time, combined with the precision guiding and buffering design of the stamping mechanism, it effectively ensures the high precision and stability of stamping processing, meets the production requirements of small tolerances in metal products, and significantly improves production efficiency and product quality. Attached Figure Description

[0014] Figure 1 This is a side view of the structure of the present utility model;

[0015] Figure 2 This is a schematic diagram of the rotating ejection mechanism of this utility model;

[0016] Figure 3 This is a schematic diagram of the ratchet and pawl working together in this utility model;

[0017] Figure 4 This is a schematic diagram of the stamping mechanism of this utility model.

[0018] In the diagram: 1. Base; 2. Support leg; 3. Bracket; 4. Rotary ejection mechanism; 401. First motor; 402. Sleeve; 403. Ratchet; 404. Drive shaft; 405. Elastic element; 406. Pawl; 407. Turntable; 408. Mold; 409. Top plate; 410. Motor housing; 411. Second motor; 412. Screw; 413. Screw collar; 414. Ejector rod; 415. Ejector block; 416. Limiting groove; 5. Stamping mechanism; 501. Hydraulic cylinder; 502. Hydraulic rod; 503. Telescopic tube; 504. Limiting plate; 505. Guide block; 506. Guide groove; 507. Telescopic rod; 508. Buffer spring; 509. Lower pressure plate; 511. Slider; 512. Slide groove; 513. Stamping head. Detailed Implementation

[0019] 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.

[0020] Please see Figure 1-4This utility model provides a technical solution: a continuous stamping device for metal pressed products, including a base 1, a support leg 2 installed at the bottom of the base 1, a bracket 3 installed on the upper side of the base 1, a rotating ejection mechanism 4 provided above the base 1, and a stamping mechanism 5 provided above the bracket 3.

[0021] The rotary ejection mechanism 4 includes a first motor 401, which is installed inside the base 1. A sleeve 402 is installed above the base 1. A ratchet 403 is connected to the output end of the first motor 401. A drive shaft 404 is connected above the ratchet 403. An elastic element 405 is installed inside the sleeve 402. A pawl 406 is connected to one end of the elastic element 405. The pawl 406 meshes with the ratchet 403. A turntable 407 is connected to the outer end of the drive shaft 404. A mold 408 is installed above the turntable 407. A top plate 409 is slidably connected to the inner side of the turntable 407. A motor housing 410 is installed above the center of the turntable 407. A second motor 411 is installed inside the motor housing 410. A screw 412 is connected to the output end of the second motor 411. A screw collar 413 is connected to the surface of the screw 412. A push rod 414 is connected to the side of the screw collar 413. A push block 415 is connected to one end of the push rod 414. The top end of the push block 415 is connected to the bottom end of the top plate 409. A limit groove 416 is opened on the inner side of the turntable 407. The rotation ejection mechanism 4 In this configuration, after the first motor 401 starts, it drives the ratchet 403 to rotate. Since the pawl 406 meshes with the ratchet 403, and the elastic force provided by the elastic element 405 keeps the pawl 406 firmly engaged with the ratchet 403, the power is transmitted to the drive shaft 404, driving the turntable 407 to rotate intermittently in a fixed direction. This drives the mold 408 to rotate sequentially to the stamping station. After the mold 408 completes stamping, the second motor 411 starts, driving the screw 412 to rotate. The threads on the surface of the screw 412 interact with the internal threads of the screw collar 413, thus... The rotational motion of the screw 412 is converted into the linear motion of the screw collar 413. The ejector rod 414 on the side of the screw collar 413 pushes the ejector block 415 upward. The ejector block 415 drives the ejector plate 409 to slide inside the mold 408, ejecting the stamped metal product from the mold 408. The limiting groove 416 on the inner side of the turntable 407 provides guidance for the ejector rod 414, ensuring a smooth and accurate ejection process and avoiding ejection deviation that could damage the product. The entire process achieves continuous positioning and efficient demolding of the metal product, providing support for the continuous operation of the stamping mechanism 5.

[0022] Furthermore, four identical sets of support legs 2 are provided at the bottom of the base 1, and are symmetrically distributed at the four corners of the bottom of the base 1 along the central axis of the base 1. By setting the support legs 2, the stability of the entire device during operation is ensured, and the device displacement or tilting is avoided due to the vibration generated during stamping. At the same time, the weight of the device itself and the pressure generated during stamping are evenly distributed, thus extending the service life of the device.

[0023] Furthermore, the ratchet 403, under the action of the elastic element 405, cooperates with the pawl 406 to form a unidirectional intermittent rotation structure. The mold 408 is provided above the turntable 407 with four identical sets arranged in a "+" shape around the center of the turntable 407. Through the arrangement of the ratchet 403, elastic element 405, pawl 406 and mold 408, the intermittent precise positioning of the mold 408 can be achieved. When a set of molds completes the stamping, the turntable 407 rotates 90° under the action of the ratchet mechanism, accurately sending the next set of molds to the stamping station. Continuous operation can be carried out without stopping the machine, significantly improving production efficiency. At the same time, the unidirectional rotation ensures the uniqueness of the mold running direction and avoids positioning deviation caused by reverse rotation.

[0024] Furthermore, four identical sets of ejector pins 414 are provided on the surface of the screw collar 413, and under the action of the second motor 411, the ejector block 415 is driven to slide up and down in the limiting groove 416. Through the setting of the screw collar 413 and ejector pins 414, the four sets of ejector pins 414 can be made to move synchronously and apply ejection force evenly, ensuring that the ejector plate 409 smoothly ejects the metal product, effectively preventing the product from deforming or getting stuck in the mold due to uneven force. The limiting groove 416 constrains the movement trajectory of the ejector pins 414, avoids deviation during ejection, improves demolding accuracy and reliability, and provides stable support for continuous stamping operations.

[0025] Furthermore, the stamping mechanism 5 includes a hydraulic cylinder 501, which is mounted on the top of the bracket 3. A hydraulic rod 502 is connected to the output end of the hydraulic cylinder 501. A telescopic tube 503 is connected to the top of the bracket 3. A limit plate 504 is slidably connected inside the telescopic tube 503. A guide block 505 is connected to the side of the limit plate 504. A guide groove 506 is provided on the inner side of the telescopic tube 503. A telescopic rod 507 is connected to the bottom of the limit plate 504. A buffer spring 508 is connected to the outer side of the telescopic rod 507. The hydraulic rod 502... A lower pressure plate 509 is connected to the bottom of the telescopic rod 507. A slider 511 is connected to the side of the lower pressure plate 509. A groove 512 is provided on the inner side of the bracket 3. A punch head 513 is connected to the bottom of the lower pressure plate 509. Through the setting of the punching mechanism 5, when the hydraulic cylinder 501 is started, the hydraulic rod 502 extends downward, pushing the lower pressure plate 509 connected to it to move downward. The slider 511 on the side of the lower pressure plate 509 slides in the groove 512 on the inner side of the bracket 3, providing guidance for the movement of the lower pressure plate 509 and ensuring the movement of the punch head 513. For metal products acting vertically on mold 408, to prevent displacement during stamping that could affect processing accuracy, the telescopic rod 507 slides downwards synchronously as the hydraulic rod 502 descends. Its outer buffer spring 508 is compressed. The buffer spring 508 effectively reduces the impact force generated by the instantaneous pressure, preventing excessive pressure from damaging the mold or metal products, while also making the stamping process smoother. The limiting plate 504 slides within the telescopic tube 503, and the guide block 505 moves within the guide groove 506, further restricting the telescopic rod 507. The movement trajectory of 7 ensures its vertical extension and retraction, enhancing stamping stability. After stamping is completed, the hydraulic cylinder 501 drives the hydraulic rod 502 to retract upwards, and the lower pressure plate 509 rises and resets accordingly. The buffer spring 508 gradually returns to its original state, preparing for the next stamping. Throughout the stamping process, the cooperation between the slider 511 and the slide groove 512, the guide block 505 and the guide groove 506, and the buffering effect of the buffer spring 508 jointly ensure the accuracy and reliability of the stamping mechanism 5, realizing continuous and efficient stamping processing of metal products.

[0026] Furthermore, under the action of the guide block 505, the limiting plate 504 drives the telescopic rod 507 to slide up and down inside the telescopic tube 503 via the guide groove 506. The outer wall size of the guide block 505 matches the inner wall size of the guide groove 506. Through the setting of the guide block 505 and the guide groove 506, the movement trajectory of the telescopic rod 507 can be precisely constrained, ensuring that it slides up and down in the vertical direction. This avoids the stamping head 513 tilting due to the deviation of the telescopic rod 507 during the stamping process, thereby ensuring the accuracy of the stamping position and the processing precision. At the same time, it enhances the stability of the telescopic rod 507 during the extension and retraction process and reduces mechanical wear caused by shaking.

[0027] Furthermore, the position of the slider 511 corresponds to the position of the slide groove 512, and the size of the slider 511 is precisely matched with the size of the slide groove 512. Through the setting of the slider 511 and the slide groove 512, precise guidance is provided for the up and down movement of the lower pressure plate 509, ensuring that the stamping head 513 is always vertically aligned with the metal product in the mold 408, avoiding stamping deviation caused by the offset of the lower pressure plate 509. At the same time, the precisely matched slider and slide groove can effectively disperse the lateral force generated during stamping, reduce the frictional loss between the lower pressure plate 509 and the bracket 3, make the stamping action more stable and smooth, and improve the overall operating accuracy and reliability of the stamping mechanism 5.

[0028] Working principle: After the device is started, the first motor 401 drives the ratchet 403 to rotate. With the cooperation of the pawl 406 and the elastic element 405, the turntable 407 is driven to rotate intermittently, sending the molds 408 distributed in a "+" shape on the turntable 407 to the stamping station in sequence. When the molds 408 are in place, the hydraulic cylinder 501 is activated, and the hydraulic rod 502 pushes the lower pressure plate 509 down. The slider 511 slides and guides in the slide groove 512 to ensure that the stamping head 513 is vertically aligned with the metal product in the mold 408. At the same time, the telescopic rod 507 slides down synchronously in the telescopic tube 503. The buffer spring 508 is compressed and buffered, and the limiting plate 504 and the guide block 505 cooperate to constrain its vertical movement, ensuring that the stamping process is smooth and accurate. After the stamping is completed, the hydraulic cylinder 501 drives the hydraulic cylinder to rotate. The pressure rod 502 retracts, and the lower pressure plate 509 and the stamping head 513 reset. At this time, the second motor 411 starts, and the screw 412 rotates, driving the screw collar 413 to rise linearly. The four sets of ejector rods 414 simultaneously push the ejector block 415 and the ejector plate 409 to eject the stamped metal product from the mold 408. After ejection, the turntable 407 rotates again under the action of the ratchet mechanism, sending the next set of molds to be processed to the stamping station. The above stamping and ejection process is repeated. The support leg 2 stabilizes the entire device to avoid stamping vibration from affecting the operation. Each guide structure precisely constrains the moving parts to ensure high precision and stability of the stamping and ejection actions, ultimately realizing efficient and continuous stamping production of metal products. This completes the use process of a continuous stamping device for metal products.

[0029] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A continuous punching device for metal pressings, comprising a base (1), characterized in that: The base (1) is equipped with a support leg (2) at its bottom, a bracket (3) is installed on the upper side of the base (1), a rotating ejection mechanism (4) is provided on the upper side of the base (1), and a stamping mechanism (5) is provided on the upper side of the bracket (3). The rotary ejection mechanism (4) includes a first motor (401), which is installed inside the base (1). A sleeve (402) is installed above the base (1). A ratchet (403) is connected to the output end of the first motor (401). A drive shaft (404) is connected above the ratchet (403). An elastic element (405) is installed on the inner side of the sleeve (402). A pawl (406) is connected to one end of the elastic element (405). The pawl (406) meshes with the ratchet (403). A turntable (407) is connected to the outer end of the drive shaft (404). A mold (407) is installed above the turntable (407). 08), the mold (408) is slidably connected to the inner side of the top plate (409), the turntable (407) is mounted above the middle part of the motor housing (410), the motor housing (410) is installed with a second motor (411), the output end of the second motor (411) is connected to a screw (412), the surface of the screw (412) is connected to a screw collar (413), the side of the screw collar (413) is connected to a push rod (414), one end of the push rod (414) is connected to a top block (415), the top end of the top block (415) is connected to the bottom end of the top plate (409), and the turntable (407) is provided with a limit groove (416).

2. A continuous punching apparatus for metal pressings according to claim 1, characterized in that: The support legs (2) are provided in four identical sets at the bottom of the base (1), and are symmetrically distributed at the four corners of the bottom of the base (1) with respect to the central axis of the base (1).

3. A continuous punching apparatus for metal pressings according to claim 1, characterized in that: The ratchet (403) cooperates with the pawl (406) under the action of the elastic element (405) to form a unidirectional intermittent rotation structure. The mold (408) has four identical sets above the turntable (407) and is distributed in a cross shape with the center of the turntable (407).

4. A continuous punching apparatus for metal pressings according to claim 1, characterized in that: The top rod (414) has four identical sets on the surface of the screw collar (413), and under the action of the second motor (411), it drives the top block (415) to slide up and down in the limiting groove (416).

5. A continuous punching apparatus for metal pressings according to claim 1, characterized in that: The stamping mechanism (5) includes a hydraulic cylinder (501), which is mounted on the top of the bracket (3). The output end of the hydraulic cylinder (501) is connected to a hydraulic rod (502). The top of the bracket (3) is connected to a telescopic tube (503). A limit plate (504) is slidably connected inside the telescopic tube (503). A guide block (505) is connected to the side of the limit plate (504). A guide groove is provided on the inner side of the telescopic tube (503). (506) A telescopic rod (507) is connected to the bottom of the limiting plate (504). A buffer spring (508) is connected to the outside of the telescopic rod (507). A lower pressure plate (509) is connected to the bottom of both the hydraulic rod (502) and the telescopic rod (507). A slider (511) is connected to the side of the lower pressure plate (509). A sliding groove (512) is opened on the inner side of the bracket (3). A punch head (513) is connected to the bottom of the lower pressure plate (509).

6. A continuous punching apparatus for metal pressings according to claim 5, characterised in that: The limiting plate (504) drives the telescopic rod (507) to slide up and down inside the telescopic tube (503) through the guide groove (506) under the action of the guide block (505). The outer wall size of the guide block (505) matches the inner wall size of the guide groove (506).

7. A continuous punching apparatus for metal pressings according to claim 5, characterised in that: The position of the slider (511) corresponds to the position of the groove (512), and the size of the slider (511) is precisely matched with the size of the groove (512).

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