A stamping die for a button metal cover

Abstract

The application provides a button metal cover stamping die, a lower die is provided with a first channel, a second channel and a third channel arranged in layers from top to bottom, the lower die is provided with a first punching hole at the intersection of the first channel and the second channel, and a blanking hole corresponding to the intersection of the second channel and the third channel; the bottom of the third channel is provided with a discharge port for discharging; a pushing structure is used for pushing the workpiece at the first punching hole to the direction of the blanking hole; a pulling structure is used for moving the workpiece at the blanking hole to the direction of the discharge port and moving the material belt at the first channel to move a distance forward; a cutting mechanism is used for cutting the waste material after punching; the pushing structure and the pulling structure are adapted to move with the lifting of the upper die, and the cutting mechanism is driven by the pulling structure that has moved to the position; the structure is novel and compact, the space occupation is reduced, the production cost is reduced, and the work efficiency is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of stamping die, more particularly to a button metal cover stamping die. BACKGROUND

[0002] The stamping process is a common production method for metal buttons. In actual production, the material belt is unwound by an unwinding machine, then fed into the stamping die by a feeder, and then stamped by the stamping equipment. The waste material is then wound by a winding machine or cut by a crusher to realize continuous processing.

[0003] The overall workflow is coherent and efficient. However, it has some defects, such as the need for multiple separate structures for work, the overall structure is dispersed, occupies a large space, the equipment cost is high, and the installation and debugging are troublesome, which are obvious shortcomings, and therefore need to be improved. SUMMARY

[0004] In order to overcome the defects of the prior art, the technical problem to be solved by the present application is to provide a button metal cover stamping die, which is novel and compact, can reduce space occupation, reduce production cost, and improve work efficiency.

[0005] To achieve this purpose, the technical scheme adopted by the present application is as follows:

[0006] The present application provides a button metal cover stamping die, comprising: an upper die; a lower die, the lower die is provided with a first channel, a second channel and a third channel arranged in layers from top to bottom, the first channel and the third channel extend along the length direction of the lower die, and the second channel extends along the width direction of the lower die; the lower die is provided with a first punching hole at the intersection of the first channel and the second channel, and a blanking hole corresponding to the intersection of the second channel and the third channel; the bottom of the third channel is provided with a discharge port for discharging material; a push structure for pushing the workpiece at the first punching hole to the direction of the blanking hole; a pull structure for moving the workpiece at the blanking hole to the direction of the discharge port, and moving the material belt at the first channel to the front by a certain distance; a cutting mechanism for cutting the waste material after punching; the push structure and the pull structure are adapted to move with the lifting of the upper die, and the cutting mechanism is driven by the pull structure moved to the position.

[0007] In the preferred technical scheme of the present application, the lower die comprises a first support plate, a second support plate and a third support plate which are stacked from top to bottom; the first channel is arranged on the bottom surface of the first support plate, and the first punching hole penetrates the first support plate at the intersection of the first channel and the second channel; the second channel is arranged on the top surface of the second support plate, and the blanking hole penetrates the second support plate at the intersection of the second channel and the third channel; the third channel is arranged on the top surface of the third support plate, and the discharge port is arranged on both sides of the blanking hole and penetrates the third support plate; one end of the first support plate extends beyond the end surface of the second support plate, and the cutting mechanism is installed at the protruding part of the first support plate and used for cutting the end of the waste material output by the first channel.

[0008] In the preferred technical scheme of the present application, the pushing structure comprises a first pushing frame and a first tension spring; the first pushing frame comprises a first pushing plate, the insertion end of the first pushing plate is provided with a first clamping hole matched with the shape of the workpiece, the top surface of the other end is fixedly provided with a first inclined guide block, and the first pushing plate is slidingly inserted at the second channel; the end portion of the first pushing frame away from the first clamping hole is provided with a first pull rod on both sides, one end of the first tension spring is hooked at the first pull rod, and the other end is hooked at the second support plate, the two first tension springs provide a pulling force for the first pushing frame to move inward, so that the first clamping hole moves to be aligned with the second stamping position; the sidewall of the upper die is provided with a first roller corresponding to the first inclined guide block, when the upper die moves downward, the first roller exerts a force on the first inclined guide block, so that the first pushing frame moves outward against the elastic force of the first tension spring, until the first clamping hole moves to be aligned with the position of the first punching hole.

[0009] In the preferred technical scheme of the present application, the pulling structure comprises a second pushing frame, a second tension spring and a hooking assembly; the second pushing frame comprises a second pushing plate, the second pushing plate is provided with a plurality of uniformly spaced perforations, the diameter of the perforations is matched with the diameter of the workpiece, and the distance between the adjacent two perforations is matched with the moving distance of the material belt; the second pushing plate is slidingly inserted at the third channel, the top surface of the end portion of the second pushing plate away from the insertion end is fixedly provided with a second inclined guide block; the end portion of the second pushing frame away from the insertion end is provided with a second pull rod on both sides, one end of the second tension spring is hooked at the second pull rod, and the other end is hooked at the third support plate, the two second tension springs provide a pulling force for the second pushing frame to move inward, so that the perforations move to be aligned with the blanking hole; the side of the second pushing frame close to the first channel is fixedly provided with a supporting plate, the supporting plate extends below the protruding end of the first support plate, and the hooking assembly is installed on the supporting plate and falls on the extension line of the first channel; the sidewall of the upper die is provided with a second roller corresponding to the second inclined guide block, when the upper die moves downward, the second roller exerts a force on the second inclined guide block, so that the second pushing frame moves outward against the elastic force of the second tension spring, and the material belt is moved by a distance by the hooking assembly; the supporting plate is provided with a pushing piece corresponding to the cutting mechanism, when the pulling structure is reset to the preset position, the pushing piece is used to drive the cutting mechanism to cut the end waste of the material belt.

[0010] In the preferable technical scheme of the present application, the top surface of the supporting plate is provided with a sink, and the sink is located on the extension line of the first channel; the hook pulling assembly comprises a rotating shaft, a torsion spring and a hook; the hook comprises a supporting ring, and the outer wall of the supporting ring is fixedly provided with a blocking strip extending in the radial direction; the supporting ring is rotatably installed at the sink through the rotating shaft, and the torsion spring is sleeved on the rotating shaft to provide the hook with elastic force for torsion in the direction of the first channel; the outer wall of the supporting ring is provided with a flat portion; when the second push frame moves outward, the hook is forced to twist in the direction of the first channel to the flat portion to abut against the groove wall of the sink, and the blocking strip maintains an upright position with the top end extending into the punching hole position of the material belt so that the material belt moves with the second push frame; when the second push frame moves inward, the hook is forced to twist in the direction of the sink, and the blocking strip is separated from the punching hole position of the material belt so that the material belt does not move.

[0011] In the preferable technical scheme of the present application, one end of the first supporting plate close to the pulling structure extends outward to form an outward extending portion, and the bottom surface of the outward extending portion is flush with the top surface of the first channel; the distal end of the outward extending portion is fixedly provided with a clamping sleeve, the inner shape of the clamping sleeve is matched with the shape of the first channel, and the position is corresponding; the material belt passing out of the first channel is arranged in the clamping sleeve, and the material belt slides against the bottom surface of the outward extending portion; the cutting mechanism is installed at the clamping sleeve to cut the material belt in the clamping sleeve.

[0012] In the preferable technical scheme of the present application, the cutting mechanism comprises a cutter, and the two ends of the cutter are provided with guide bolts on the top surface; the bottom surface of the clamping sleeve is provided with a guide groove extending along the width direction of the clamping sleeve and penetrating through the two sides of the inner part of the clamping sleeve; the top surface of the guide groove is higher than the top surface of the first channel; the two ends of the guide groove are provided with third guide holes penetrating through the top surface of the clamping sleeve, the guide bolts are arranged in the third guide holes, the cutter is arranged in the guide groove, and the cutting edge is arranged upward; when the second push frame is reset to the preset position, the position of the jacking piece corresponds to the position of the cutter, the cutter is jacked upward, and the cutter cuts the material belt.

[0013] In the preferable technical scheme of the present application, the pulling structure is used to drive the material belt to move at a fixed distance, and the position of the cutter is aligned with the center of the punching hole position of the material belt in the clamping sleeve.

[0014] The present application has the following beneficial effects:

[0015] The present application provides a button metal cover stamping die, comprising: an upper die; a lower die, the lower die is provided with a first channel, a second channel and a third channel arranged in layers from top to bottom, the first channel and the third channel extend along the length direction of the lower die, and the second channel extends along the width direction of the lower die; the lower die is provided with a first punching hole at the intersection of the first channel and the second channel, and a blanking hole corresponding to the intersection of the second channel and the third channel; the bottom of the third channel is provided with a discharge port for discharging; the first stamping part, the second stamping part and the blanking part are distributed in a staggered manner, so that the workpiece and the waste are separated and discharged, and the workpiece can be conveniently collected and prevented from flying randomly.

[0016] The pushing structure is used for pushing the workpiece at the first punching position to the blanking hole direction, the pulling structure is used for moving the workpiece at the blanking hole to the discharge port direction, and the material belt passing through the first channel is moved by a distance, and the cutting mechanism is used for cutting the waste material after punching. The displacement of the workpiece after stamping, the distance movement of the material belt and the cutting of the waste material can be realized, and no additional independent feeding structure and cutting structure need to be additionally installed, so that the complex debugging and assembly are omitted, the cost is effectively reduced, and the efficiency is improved. The overall structure is compact, and the external space occupation is reduced.

[0017] In addition, the pushing structure and the pulling structure move adaptively with the lifting of the upper die, the cutting mechanism is driven by the pulling structure moved to the position, and the movement of the upper die driven by the stamping equipment is used as the driving power to promote the linkage of the overall structure. No additional electric driving components are needed, the equipment and operation cost is effectively reduced, and the overall efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a first perspective view of a three-dimensional structure of a button metal cover stamping die provided in a specific embodiment of the present application;

[0019] Figure 2 is a second perspective view of a three-dimensional structure of a button metal cover stamping die provided in a specific embodiment of the present application;

[0020] Figure 3 is Figure 1 is an enlarged view of part A in

[0021] Figure 4 is a three-dimensional structure of a lower die provided in a specific embodiment of the present application;

[0022] Figure 5 is a first perspective view of a three-dimensional structure of a lower die provided in a specific embodiment of the present application;

[0023] Figure 6 is a second perspective view of a three-dimensional structure of a lower die provided in a specific embodiment of the present application;

[0024] Figure 7 is a three-dimensional structure of a pulling structure provided in a specific embodiment of the present application;

[0025] Figure 8 is a three-dimensional structure of a pulling structure provided in a specific embodiment of the present application;

[0026] Figure 9 is a three-dimensional structure of a first support plate and a cutting mechanism provided in a specific embodiment of the present application;

[0027] Figure 10 This is a three-dimensional unfolded structural diagram of the first support plate and the cutting mechanism provided in a specific embodiment of the present invention.

[0028] In the picture:

[0029] 100. Upper mold; 110. First roller; 120. Second roller;

[0030] 200. Lower die; 211. First channel; 212. Second channel; 213. Third channel; 214. First punch; 215. Blanking hole; 216. Discharge port; 221. First support plate; 2211. Extension portion; 2212. Jacket; 2213. Guide groove; 2214. Third guide hole; 222. Second support plate; 223. Third support plate;

[0031] 300. Pushing structure; 310. First push frame; 311. First push plate; 312. First bayonet; 313. First inclined guide block; 314. First pull rod; 320. First tension spring;

[0032] 400. Pulling structure; 410. Second push frame; 411. Second push plate; 412. Perforation; 413. Second inclined guide block; 414. Second pull rod; 415. Support plate; 416. Pushing component; 417. Sinking groove; 420. Second tension spring; 430. Hook and pull assembly; 431. Rotating shaft; 432. Torsion spring; 433. Hook; 4331. Support ring; 4332. Stop bar; 500. Cutting mechanism; 510. Cutting blade; 520. Guide bolt. Detailed Implementation

[0033] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0034] like Figures 1 to 6As shown, a specific embodiment of the present invention discloses a button metal cover stamping die, comprising: an upper die 100; a lower die 200, wherein the lower die 200 is provided with a first channel 211, a second channel 212, and a third channel 213 arranged sequentially from top to bottom, the first channel and the third channel extending along the length direction of the lower die, and the second channel extending along the width direction of the lower die; the lower die 200 is provided with a first punch 214 at the intersection of the first channel 211 and the second channel 212, and a blanking hole 215 corresponding to the intersection of the second channel 212 and the third channel 213; the third... The bottom of the channel 213 is provided with a discharge port 216 for discharging material; a push structure 300 is used to push the workpiece at the first punch 214 toward the drop hole 215; a drag structure 400 is used to move the workpiece at the drop hole 215 toward the discharge port 216 and to move the material strip passing through the first channel forward a fixed distance; a cutting mechanism 500 is used to cut the waste material after punching; the push structure 300 and the drag structure 400 adapt to the lifting and lowering movement of the upper die 100, and the cutting mechanism 500 is driven by the drag structure 400 that has moved into place.

[0035] The above-mentioned button metal cover stamping die, with its multiple channels designed and coordinated, allows the first stamping part, the second stamping part, and the blanking part to be staggered, so that the workpiece and waste can be sent out separately. In particular, it can facilitate the collection of workpieces and prevent them from flying away randomly.

[0036] The push-up structure, dragging structure, and cutting mechanism can realize multiple actions such as workpiece displacement after stamping, fixed-distance movement of the strip, and cutting of waste material. There is no need to install an additional independent feeding structure and cutting structure, which eliminates the need for complex debugging and assembly, effectively reducing costs and improving efficiency; moreover, the overall structure is compact, reducing the external space occupation.

[0037] Furthermore, the push-up structure and the dragging structure adapt to the lifting and lowering movement of the upper die. The cutting mechanism is driven by the dragging structure that has moved into place. The action of the stamping equipment driving the upper die to move is used as the driving force, which promotes the linkage and coordination of the entire structure. No additional electric drive components are required, which effectively reduces equipment and operating costs and improves overall efficiency.

[0038] Furthermore, the lower die 200 includes a first support plate 221, a second support plate 222, and a third support plate 223 stacked sequentially from top to bottom; a first channel 211 is located on the bottom surface of the first support plate 221, and a first punch hole passes through the first support plate at the intersection of the first and second channels; a second channel 212 is located on the top surface of the second support plate 222, and a discharge hole passes through the second support plate at the intersection of the second and third channels; a third channel 213 is located on the top surface of the third support plate 223, and a discharge port is located on both sides of the discharge hole and passes through the third support plate; the stacked assembly structure facilitates the design and processing of each structural component, as well as the disassembly and replacement of parts, and the overall assembly is relatively simple and easy to operate;

[0039] One end of the first support plate 221 extends beyond the end face of the second support plate 222. The cutting mechanism 500 is installed at the protruding part of the first support plate 221, so that it falls outside the output end of the first channel. It is used to cut the end of the waste material output from the first channel 211, realizing the linkage cutting action without the need for additional cutting device.

[0040] The first, second, and third support plates are fixedly connected by bolts to ensure a tight fit, so that the corresponding channels maintain the required dimensions. Furthermore, the lower and upper molds are provided with holes for installing guide mechanisms. The addition of guide mechanisms can further limit the fit between the upper and lower molds, so that the operation of each structural component is coordinated. It should be noted that the guide mechanism is not shown in this application for the purpose of showing the core components.

[0041] Furthermore, such as Figure 5 , Figure 6As shown, the push-up structure 300 includes a first pusher 310 and a first tension spring 320. The first pusher 310 includes a first push plate 311. The insertion end of the first push plate 311 is provided with a first slot 312 adapted to the shape of the workpiece, and the top surface of the other end is fixedly provided with a first inclined guide block 313. The first push plate 311 is slidably inserted into the second channel 212. First pull rods 314 are installed on both sides of the end of the first pusher 310 away from the first slot. One end of the first tension spring 320 is hooked to the first pull rod 314, and the other end is hooked to the second support plate 222. The two first tension springs provide an inward pulling force for the first pusher, so that the first slot moves to be aligned with the second stamping part. The upper die 100 The side wall of the upper die is equipped with a first roller 110 corresponding to the first inclined guide block 313. When the upper die moves down, the first roller applies force to the first inclined guide block, causing the first pusher to move outward against the elastic force of the first tension spring until the first slot moves to correspond to the position of the first punch. This structural design utilizes the downward movement of the upper die and the cooperation between the first roller and the first inclined guide block to achieve the dispersion and transfer of force, thereby pushing the first pusher outward. When the upper die moves up, the force applied to the first inclined guide block is released, and the first pusher moves back under the action of the first tension spring. This allows the first pusher to move back and forth with the up and down movement of the upper die, eliminating the need for an additional electric drive device for the pushing structure and reducing equipment and operating costs.

[0042] Furthermore, a first groove is fixedly provided on the outer side of the port of the second channel corresponding to the second support plate. Multiple first bullseye bearings are installed at the bottom of the groove to provide sliding support for the bottom surface of the first push plate. A first upright plate is fixedly provided on the bottom surface of the first push plate away from the first bayonet. A first guide rod is installed on the first upright plate, and a first guide hole is provided on the third support plate. The first guide rod slides along the first guide hole. The first bullseye bearings support the first push frame and provide an auxiliary sliding effect. In addition, the first guide rod provides guidance and limitation, so that the first push frame moves only in the required direction. Of course, the cooperation between the first guide rod and the first guide hole can also withstand part of the force applied from above, disperse the force, and prevent the first push frame from deforming and being damaged. In addition, this design uses the first guide hole in the third support plate as a part to accommodate the first guide rod, so there is no need to install the first guide rod externally in the opposite direction, which would prevent the externally installed rod from protruding and occupying more space.

[0043] It should be noted that the depth of the first guide hole is adapted to the reset stroke of the push structure. The limit position of the push structure's inward movement is limited by restricting the movement of the first guide rod, which facilitates the alignment and installation of other structural components and the design of the motion trajectory. For example, when the first push frame moves inward to the point where the first guide rod abuts against the closed end of the first guide hole and can no longer move, the first bayonet is aligned with the second stamping part; and the workpiece at the first bayonet pushes the previous workpiece just to the blanking hole, realizing the replacement and transfer of the workpiece.

[0044] Furthermore, such as Figure 7 , Figure 8 As shown, the dragging structure 400 includes a second pusher 410, a second tension spring 420, and a hook assembly 430. The second pusher 410 includes a second push plate 411, which has a plurality of evenly spaced perforations 412. The diameter of the perforations is adapted to the diameter of the workpiece, and the spacing between two adjacent perforations is adapted to the moving distance of the conveyor belt. The second push plate 411 is slidably inserted into the third channel 213, and a second inclined guide block 413 is fixedly provided on the top surface of the second push plate 411 away from the insertion end. Second pull rods 414 are installed on both sides of the end of the second pusher 410 away from the insertion end. One end of the second tension spring 420 hooks onto the second pull rod 414, and the other end hooks onto the third support plate 223. The two second tension springs provide inward movement for the second pusher. The pulling force causes the perforation to move to align with the material drop hole; a support plate 415 is fixedly provided on the side of the second pusher 410 near the first channel, the support plate 415 extends below the protruding end of the first support plate 221, and the hook assembly 430 is installed on the support plate 415 and falls on the extension line of the first channel 211; a second roller 120 is installed on the side wall of the upper die 100 corresponding to the second inclined guide block 413. When the upper die moves down, the second roller applies force to the second inclined guide block, causing the second pusher to move outward against the elastic force of the second tension spring, and drags the strip at a fixed distance through the hook assembly; a pusher 416 is provided on the support plate 415 corresponding to the cutting mechanism 500. When the dragging structure is reset to the preset position, the pusher is used to drive the cutting mechanism to cut the waste material at the end of the strip;

[0045] This structural design utilizes the downward movement of the upper mold and the force distribution and transfer achieved through the cooperation between the second roller and the second inclined guide block, thereby pushing the second pusher outward. When the upper mold moves upward, the force on the second inclined guide block is released, and the second pusher moves back under the action of the second tension spring. This allows the second pusher to move back and forth with the up and down movement of the upper mold, eliminating the need for an additional electric drive device for the pusher structure, thus reducing equipment and operating costs. When the hook assembly moves forward with the second pusher, it can drive the material strip forward. When the second pusher moves back, it will not drag the material strip, conforming to the fixed-distance movement requirements of the material strip and adapting to the movement trajectory of the second pusher. Correspondingly, the pusher also moves with the second pusher. Only when the second pusher returns to its preset position will it drive the cutting mechanism to move, completing the cutting while the material strip is stationary. This avoids interference with the dragging movement of the material strip and maintains the overall coordination of the movements.

[0046] Furthermore, a second bracket is fixedly provided on the outer side of the port of the third channel corresponding to the third support plate. Multiple second bullseye bearings are installed at the bottom of the second bracket to provide sliding support for the bottom surface of the second push plate. A side plate is fixedly provided on the side of the second push plate away from the bracket, and a second guide rod is installed on the side plate. A second guide hole is provided on the second support plate, and the second guide rod slides along the second guide hole. The second bullseye bearings support the second push frame and provide an auxiliary sliding effect. In addition, the second guide rod provides guidance and limitation, so that the second push frame moves only in the required direction. Of course, the cooperation between the second guide rod and the second guide hole can also withstand part of the force applied from above, disperse the force, and prevent the second push frame from deforming and being damaged. In addition, this design utilizes the second guide hole in the second support plate to serve as a part to accommodate the second guide rod, so there is no need to install the second guide rod externally in the opposite direction, which would prevent the externally installed rod from taking up too much space.

[0047] It should be noted that the depth of the second guide hole is adapted to the reset stroke of the dragging structure. The movement limit of the dragging structure is limited by restricting the movement of the second guide rod, which facilitates the alignment and installation of other structural components and the design of the motion trajectory. For example, when the second pusher moves inward to the point where the second guide rod abuts against the closed end of the second guide hole and can no longer move, the hook assembly moves to the punching hole of the strip and is close to the side away from the first channel, preparing for subsequent dragging of the strip. Furthermore, the position of the perforation on the second push plate corresponds to the position of the dropping hole, and the workpiece falls smoothly into the perforation, facilitating subsequent material discharge. In addition, the pusher is positioned at the pusher cutting mechanism, prompting the cutting mechanism to cut the waste material at the end of the strip.

[0048] Furthermore, the top surface of the support plate 415 is provided with a recess 417, which falls on the extension line of the first channel 211; the hook assembly 430 includes a rotating shaft 431, a torsion spring 432, and a hook 433; the hook 433 includes a support ring 4331, and the outer wall of the support ring 4331 is fixedly provided with a stop bar 4332 extending in the radial direction; the support ring 4331 is rotatably mounted at the recess 417 via the rotating shaft 431, the torsion spring 432 is sleeved on the rotating shaft 431, and the two end faces of the support ring and the two groove walls of the recess are provided with locking positions corresponding to the torsion spring for locking the end locking bar of the torsion spring, so that the torsion spring follows the swing direction required by the hook and provides the hook with a spring force to twist in the direction of the first channel; the outer wall of the support ring 4331 is provided with It has a straight section; when the second pusher moves outward, the hook is twisted in the direction of the first channel until the straight section abuts against the wall of the settling trough, and the stop bar remains upright with its top end extending into the punched hole of the material strip, causing the material strip to move with the second pusher; when the second pusher moves inward, the hook is twisted in the direction of the settling trough, the stop bar disengages from the punched hole of the material strip, and the material strip does not move with it; this structural design limits the rotation of the hook, so that the stop bar remains upright when the second pusher moves outward, thereby effectively dragging the material strip; when the second pusher moves back, the stop bar can swing without dragging the material strip, thus achieving a fixed distance movement of the material strip when the second pusher moves outward.

[0049] Furthermore, such as Figure 9 , Figure 10 As shown, the first support plate 221 extends outward from one end near the dragging structure to form an extension 2211. The bottom surface of the extension 2211 is flush with the top surface of the first channel 211. A sleeve 2212 is fixedly provided at the end of the extension 2211. The internal shape of the sleeve 2212 is adapted to the shape of the first channel 211 and the position corresponds. The material strip passing through the first channel passes through the sleeve and slides against the bottom surface of the extension. The sleeve and the extension can limit and support the movement of the material strip, preventing the punched material strip from becoming too soft or even bending and falling downward, thus avoiding affecting the normal dragging and conveying action. The cutting mechanism 500 is installed at the sleeve 2212 to cut the material strip inside the sleeve. There is a sufficient gap between this position and the output port of the first channel, so as not to affect the fixed-distance dragging and moving action of the dragging structure on the material strip. It can also cut the waste material at the end.

[0050] The top of the baffle is spherical, and the bottom surface of the outer extension has a groove extending along the length direction. The position of the groove corresponds to the position of the baffle and the shape is adapted. The groove can provide a place to receive the top of the baffle, so that when the baffle is placed upright, the top of the baffle is higher than the material strip, which can better achieve the pushing and pulling effect on the material strip.

[0051] Furthermore, the cutting mechanism 500 includes a cutter 510, with guide bolts 520 mounted on the top surfaces of both ends of the cutter 510; the bottom surface of the sleeve 2212 is provided with a guide groove 2213, which extends along the width direction of the sleeve and penetrates both sides of the sleeve's interior; the top surface of the guide groove is higher than the top surface of the first channel; the two ends of the guide groove 2213 are provided with third guide holes 2214 penetrating the top surface of the sleeve 2212, and the guide bolts 520 are inserted into the third guide holes 2214; the cutter 510 is installed in the guide groove 2213 with its blade facing upward; when the second pusher is reset inward to the preset position, the position of the pusher corresponds to the position of the cutter, which is used to lift the cutter upward so that the cutter cuts the strip; the entire cutting mechanism has a simple structure, and the cutting action and reset adjustment are realized through lifting and lowering movement; the cutting action is performed when the second pusher moves back, at which time the strip is stationary, which can ensure the cutting and segmentation and prevent the structural components from being damaged by collision due to interference of the action;

[0052] Furthermore, the bottom of the cutter has an outward convex arc shape, the top of the pusher has an outward convex arc shape, and the two sides of the pusher are connected to the top surface of the support plate by a rounded transition, so that it can be smoothly tilted up and pushed to cut the material strip.

[0053] Furthermore, the dragging structure is used to drive the fixed-distance dragging material belt to move. The position of the cutter is aligned with the center of the punch hole of the material belt in the jacket. The area to be cut in this part is the smallest, which can facilitate cutting and segmentation and ensure the cutting effect.

[0054] This invention has been described through preferred embodiments. Those skilled in the art will understand that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the invention. This invention is not limited to the specific embodiments disclosed herein; other embodiments falling within the scope of the claims are also within the protection scope of this invention.

Claims

1. A stamping die for a button metal cover, comprising: an upper die; a lower die, wherein a first channel, a second channel and a third channel are arranged in layers from top to bottom, the first channel and the third channel extend along the length direction of the lower die, and the second channel extends along the width direction of the lower die; the lower die is provided with a first punching hole at the intersection of the first channel and the second channel, and a blanking hole corresponding to the intersection of the second channel and the third channel; the bottom of the third channel is provided with a discharge port for discharging materials; a pushing structure for pushing the workpiece at the first punching hole to the direction of the blanking hole; a pulling structure for moving the workpiece at the blanking hole to the direction of the discharge port, and moving the material belt at the first channel to the front by a certain distance; a cutting mechanism for cutting the waste material after punching; the pushing structure and the pulling structure move adaptively with the lifting of the upper die, and the cutting mechanism is driven by the pulling structure which has moved to a position; the lower die comprises a first support plate, a second support plate and a third support plate arranged in layers from top to bottom; the first channel is arranged on the bottom surface of the first support plate, and the first punching hole penetrates the first support plate at the intersection of the first channel and the second channel; the second channel is arranged on the top surface of the second support plate, and the blanking hole penetrates the second support plate at the intersection of the second channel and the third channel; the third channel is arranged on the top surface of the third support plate, and the discharge port is arranged on both sides of the blanking hole and penetrates the third support plate; one end of the first support plate extends beyond the end surface of the second support plate, and the cutting mechanism is installed at the protruding part of the first support plate for cutting the end of the waste material output by the first channel; the pushing structure comprises a first push frame and a first tension spring; the first push frame comprises a first push plate, the insertion end of the first push plate is provided with a first clamping hole matched with the shape of the workpiece, the top surface of the other end is fixedly provided with a first inclined guide block, and the first push plate is slidingly inserted at the second channel; first pull rods are installed on both sides of the end of the first push frame away from the first clamping hole, one end of the first tension spring is hooked at the first pull rod, and the other end is hooked at the second support plate, the two first tension springs provide a pulling force for the first push frame to move inward, so that the first clamping hole moves to be aligned with the second stamping part; a first roller is installed on the side wall of the upper die corresponding to the first inclined guide block, when the upper die moves downward, the first roller exerts a force on the first inclined guide block, so that the first push frame moves outward against the elastic force of the first tension spring, until the first clamping hole moves to the position corresponding to the first punching hole; the pulling structure comprises a second push frame, a second tension spring and a hooking assembly; the second push frame comprises a second push plate, a plurality of evenly spaced perforations are arranged on the second push plate, the diameter of the perforations is matched with the diameter of the workpiece, and the distance between the adjacent two perforations is matched with the moving distance of the material belt; the second push plate is slidingly inserted at the third channel, and the top surface of the end of the second push plate away from the insertion end is fixedly provided with a second inclined guide block; second pull rods are installed on both sides of the end of the second push frame away from the insertion end, one end of the second tension spring is hooked at the second pull rod, and the other end is hooked at the third support plate, the two second tension springs provide a pulling force for the second push frame to move inward, so that the perforations move to be aligned with the blanking hole. ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ ​ The second push frame is fixed with a supporting plate on the side close to the first channel, the supporting plate extends below the protruding end of the first supporting plate, the hooking and pulling assembly is installed on the supporting plate and falls on the extension line of the first channel; The side wall of the upper die is provided with a second roller corresponding to the second inclined guide block, when the upper die moves downward, the second roller exerts force on the second inclined guide block, so that the second push frame moves outward against the elastic force of the second tension spring, and the hooking and pulling assembly moves the material belt by a distance; The supporting plate is provided with a pushing piece corresponding to the cutting mechanism, when the hooking and pulling structure is reset to the preset position, the pushing piece drives the cutting mechanism to cut the end waste of the material belt; The top surface of the supporting plate is provided with a sink, and the sink falls on the extension line of the first channel; The hooking and pulling assembly comprises a rotating shaft, a torsion spring and a hooking piece, the hooking piece comprises a supporting ring, the outer wall of the supporting ring is fixed with a blocking strip extending in the radial direction, the supporting ring is rotatably installed at the sink through the rotating shaft, and the torsion spring is sleeved on the rotating shaft to provide the hooking piece with elastic force for torsion in the direction of the first channel; The outer wall of the supporting ring is provided with a flat portion; When the second push frame moves outward, the hooking piece is torsioned in the direction of the first channel to the flat portion against the groove wall of the sink, the blocking strip maintains an upright position, and the top end of the blocking strip extends into the punching hole of the material belt, so that the material belt moves with the second push frame; When the second push frame moves inward, the hooking piece is torsioned in the direction of the sink, and the blocking strip is separated from the punching hole of the material belt, so that the material belt does not move; The first supporting plate extends outward at one end close to the hooking and pulling structure to form an extended portion, the bottom surface of the extended portion is flush with the top surface of the first channel; a clamping sleeve is fixed at the end of the extended portion, the inner shape of the clamping sleeve is matched with the shape of the first channel, and the positions are corresponding; The material belt passing through the first channel is arranged in the clamping sleeve and slides against the bottom surface of the extended portion; The cutting mechanism is installed at the clamping sleeve to cut the material belt in the clamping sleeve.

2. The button metal cover stamping die according to claim 1, characterized in that: The cutting mechanism comprises a cutter, and guide bolts are installed on the top surface of both ends of the cutter; The bottom surface of the clamping sleeve is provided with a guide groove extending along the width direction of the clamping sleeve and penetrating through the inner sides of the clamping sleeve, and the top surface of the guide groove is higher than the top surface of the first channel; Both ends of the guide groove are provided with third guide holes penetrating through the top surface of the clamping sleeve, the guide bolts are arranged in the third guide holes, and the cutter is installed at the guide groove with the blade upward; When the second push frame is reset to the preset position, the position of the pushing piece corresponds to the position of the cutter, so as to lift the cutter upward and cut the material belt.

3. The button metal cover stamping die according to claim 2, characterized in that: The hooking and pulling structure is used to move the material belt by a distance, and the position of the cutter is aligned with the center of the punching hole of the material belt in the clamping sleeve.

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