Combined notch punching die

Abstract

The utility model discloses a combined notch punching die which comprises an upper die frame and a lower die frame, an upper die base plate is arranged on the end face, close to the lower die frame, of the upper die frame, an upper die fixing plate is arranged on the end face, away from the upper die frame, of the upper die base plate, a male die is installed on the upper die fixing plate, and a through hole penetrating through the upper surface and the lower surface of the male die is formed in the male die. A gas channel communicated with the through hole is formed in the upper die base plate, a pneumatic quick-plug connector is arranged at the position, away from an opening of the through hole, of the gas channel, and gas entering the through hole through the gas channel can be blown out from the opening end, away from the gas channel, of the through hole. The punching die is simple in structure, waste materials which are produced during punching and are adhered to the end face of the male die can be blown out through matching of the through hole and the gas channel, the problem that a knife edge is scrapped due to the fact that the waste materials are adhered to the knife edge of the male die is solved, and the effect of removing the waste materials at the knife edge is achieved.

Description

Technical Field

[0001] This utility model relates to the field of rolled bushing processing technology, specifically a combined punching notch die. Background Technology

[0002] Rolled bushings are a common type of mechanical transmission component, typically made from bearing material or sheet metal coated with bearing material. They offer advantages such as compact structure, high load-bearing capacity, and easy assembly. In practical applications, some manufacturers design square or semi-circular notches at the ends of the bushings, depending on product assembly or lubrication requirements.

[0003] Currently, in small-batch production, milling is commonly used to form the rolled bushings before notching. However, this method is inefficient, and due to the specific angle requirement between the notch position and the bushing joint, deviations are prone to occur during manual positioning, resulting in a low product qualification rate. In mass production, stamping dies are often used to create the notch. Furthermore, traditional dies commonly suffer from residual blanking waste during the stamping process: the waste generated during blanking tends to adhere to the end face of the punch. If not removed in time, the waste will accumulate in the cutting edge area, causing cutting edge wear or even scrap, directly affecting the die life and processing accuracy. Therefore, there is an urgent need to propose a combined notch-making die to solve the above-mentioned problems in the existing technology. Utility Model Content

[0004] The purpose of this invention is to provide a combined punching die to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a combined punching die, comprising an upper die set and a lower die set. An upper die pad is provided on the end face of the upper die set near the lower die set, and an upper die fixing plate is provided on the end face of the upper die pad away from the upper die set. A punch is mounted on the upper die fixing plate, and the punch has a through hole penetrating the upper and lower surfaces. A gas channel communicating with the through hole is provided on the upper die pad, and a pneumatic quick-connect connector is provided at the opening of the gas channel away from the through hole. Gas entering the through hole through the gas channel can be blown out from the opening end of the through hole away from the gas channel.

[0006] As a further embodiment of this utility model: a plurality of first positioning pins are installed on the upper mold frame, the ends of the plurality of first positioning pins passing through the upper mold pad and the upper mold fixing plate in sequence, and a plurality of first bolts whose ends pass through the upper mold fixing plate and the upper mold pad in sequence and are threadedly connected to the upper mold frame are installed on the upper mold fixing plate.

[0007] As a further embodiment of this utility model: the gas channel is provided with an internal thread at the opening end near the pneumatic quick-connect fitting, and the pneumatic quick-connect fitting is adapted to the internal thread of the gas channel.

[0008] As a further embodiment of this utility model: a first groove is provided on the upper mold fixing plate, which passes through its upper and lower end faces. A punch fixing block adapted to the first groove is provided in the first groove, and a second bolt is installed on the punch fixing block to connect it to the upper mold pad.

[0009] As a further embodiment of this utility model: a lower mold base plate is installed on the end face of the lower mold frame near the upper mold frame, a lower mold fixing plate is installed on the lower mold base plate, the lower mold fixing plate has a second groove that passes through the upper and lower end faces, a cavity mold insert that matches it is provided in the second groove, and a fifth bolt is installed on the cavity mold insert to connect it to the lower mold base plate.

[0010] As a further embodiment of this utility model: a plurality of third positioning pins are installed on the lower mold frame, the ends of the plurality of third positioning pins passing through the lower mold pad and the lower mold fixing plate in sequence, and a plurality of fourth bolts whose ends pass through the lower mold fixing plate and the lower mold pad in sequence and are threadedly connected to the lower mold frame are installed on the lower mold fixing plate.

[0011] As a further embodiment of this utility model: a limiting baffle is installed on the end face of the lower mold fixing plate away from the lower mold pad. The limiting baffle is connected to the lower mold fixing plate by a third bolt, and the limiting baffle and the lower mold fixing plate are positioned by a second positioning pin.

[0012] As a further embodiment of this utility model: the upper mold frame and the lower mold frame are connected by a limiting mechanism, which includes a guide sleeve installed on the upper mold frame and a guide post installed on the lower mold frame, with the guide post and the lower mold frame being positioned correspondingly.

[0013] As a further embodiment of this utility model: a first boss and a second boss are respectively provided at both ends of the punch, wherein the first boss cooperates with the third groove opened on the punch fixing block.

[0014] As a further embodiment of this utility model: it further includes a slider disposed on the upper die frame, the slider being connected to a solenoid valve on the punch press, the solenoid valve being provided with an air pipe, the air pipe including an air inlet pipe and an air outlet pipe, wherein the air outlet pipe is connected to a pneumatic quick-connect fitting. During the punching process of the upper die frame, the slider moves together with the upper die frame. When the slider descends to the lowest point, the solenoid valve is energized, and when the slider rises to the highest point, the solenoid valve is de-energized.

[0015] Compared with the prior art, the beneficial effects of this utility model are: by combining the through hole and the gas channel, the waste material that sticks to the end face of the punch during punching can be blown out, preventing the problem of the cutting edge being scrapped due to the waste material sticking to the cutting edge of the punch, so as to achieve the function of removing the waste material from the cutting edge. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the combined punching notch die of this utility model;

[0017] Figure 2 This is a schematic diagram of the upper mold frame of this utility model;

[0018] Figure 3 This is a schematic diagram of the lower mold frame of this utility model;

[0019] Figure 4 This is a schematic diagram of the third groove of this utility model;

[0020] Figure 5 This is a schematic diagram of the punch of this utility model;

[0021] In the diagram: 1. Slider; 2. Upper mold frame; 3. Upper mold pad; 4. Upper mold fixing plate; 41. First groove; 5. Guide sleeve; 6. Guide post; 7. Limiting baffle; 8. Lower mold fixing plate; 81. Second groove; 9. Lower mold pad; 10. Lower mold frame; 11. Punch fixing block; 111. Third groove; 12. Punch; 121. First boss; 122. Second boss; 13. Rubber unloading block; 14. Die insert; 15. First bolt; 16. First locating pin; 17. Second bolt; 18. Third bolt; 19. Fourth bolt; 20. Second locating pin; 21. Third locating pin; 22. Fifth bolt; 23. Pneumatic quick connector; 31. Gas channel; 32. Internal thread. Detailed Implementation

[0022] 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0023] Please see Figure 1-5In this embodiment of the present invention, a combined punching die includes an upper die set 2 and a lower die set 10. An upper die pad 3 is provided on the end face of the upper die set 2 near the lower die set 10. An upper die fixing plate 4 is provided on the end face of the upper die pad 3 away from the upper die set 2. A punch 12 is mounted on the upper die fixing plate 4, and a rubber unloading block 13 is mounted on the punch 12. The end face of the punch 12 has a cutting edge for punching material. A plurality of first positioning pins 16 are mounted on the upper die set 2. The number of first positioning pins 16 is not limited. In this embodiment, preferably, there are two first positioning pins 16. The ends of the two first positioning pins 16 pass through the upper die pad 3 and the upper die fixing plate 4 in sequence. A plurality of first bolts 1, the ends of which pass through the upper die fixing plate 4 and the upper die pad 3 in sequence and are threadedly connected to the upper die set 2, are mounted on the upper die fixing plate 4. 5. By rotating the first bolt 15, when the first bolt 15 is no longer threadedly connected to the upper die holder 2, the upper die fixing plate 4 and the upper die pad 3 can be disassembled and assembled. The punch 12 has a through hole 123 that passes through the upper and lower surfaces. The upper die pad 3 has a gas channel 31 that communicates with the through hole 123. A pneumatic quick connector 23 is provided at the opening of the gas channel 31 away from the through hole 123. The gas that enters the through hole 123 through the gas channel 31 can be blown out from the opening of the through hole 123 away from the gas channel 31. This can blow out the waste material that sticks to the end face of the punch 12 during punching, preventing the problem of the cutting edge being scrapped due to the waste material sticking to the cutting edge of the punch 12, so as to achieve the function of removing the cutting edge waste. The pneumatic quick connector 23, the gas channel 31 and the through hole 123 are combined to form a gas passage for gas to pass through.

[0024] Please see Figure 1 In one embodiment, preferably, the gas channel 31 is provided with an internal thread 32 near the opening end of the pneumatic quick connector 23, and the pneumatic quick connector 23 is adapted to the internal thread 32 of the gas channel 31. After inserting the pneumatic quick connector 23 into the gas channel 31 and rotating the pneumatic quick connector 23, the external thread on the pneumatic quick connector 23 is connected to the internal thread of the gas channel 31, which facilitates the installation and removal of the pneumatic quick connector 23.

[0025] Please see Figure 2 and Figure 4 In one embodiment, preferably, the upper mold fixing plate 4 has a first groove 41 that runs through its upper and lower end faces. A punch fixing block 11 that is adapted to the first groove 41 is provided in the first groove 41. A second bolt 17 that connects the punch fixing block 11 to the upper mold pad 3 is installed on the punch fixing block 11. A third groove 111 is provided on the punch fixing block 11. The first groove 41 is designed to prevent the punch fixing block 11 from being placed in the wrong position, thereby preventing damage to the mold caused by incorrect installation.

[0026] Please see Figure 3In one embodiment, preferably, a lower mold base plate 9 is installed on the end face of the lower mold frame 10 near the upper mold frame 2. A lower mold fixing plate 8 is installed on the lower mold base plate 9. The lower mold fixing plate 8 has a second groove 81 that passes through the upper and lower end faces. A cavity mold insert 14 that matches the cavity mold insert 14 is provided in the second groove 81. A fifth bolt 22 is installed on the cavity mold insert 14 to connect it to the lower mold base plate 9. The second groove 81 is used to fix the cavity mold insert 14. The second groove 81 is designed to prevent misplacement, which can effectively prevent the cavity mold insert 14 from being placed in reverse and avoid mold damage caused by installation errors.

[0027] Please see Figure 3 In one embodiment, preferably, a plurality of third positioning pins 21 are installed on the lower mold frame 10, the ends of the plurality of third positioning pins 21 passing through the lower mold pad 9 and the lower mold fixing plate 8 in sequence, and a plurality of fourth bolts 19 are installed on the lower mold fixing plate 8, the ends of which pass through the lower mold fixing plate 8 and the lower mold pad 9 in sequence and are threadedly connected to the lower mold frame 10.

[0028] Please see Figure 3 In one embodiment, preferably, a limiting baffle 7 is installed on the end face of the lower mold fixing plate 8 away from the lower mold pad plate 9. The limiting baffle 7 is connected to the lower mold fixing plate 8 by a third bolt 18. The limiting baffle 7 and the lower mold fixing plate 8 are positioned by a second positioning pin 20. By rotating and removing the third bolt 18, the limiting baffle 7 installed on the lower mold fixing plate 8 can be removed, so as to achieve quick replacement and adjustment when changing products of different specifications.

[0029] Please see Figure 1 In one embodiment, preferably, the upper mold frame 2 and the lower mold frame 10 are connected by a limiting mechanism. The limiting mechanism includes a guide sleeve 5 installed on the upper mold frame 2 and a guide post 6 installed on the lower mold frame 10. The guide post 6 and the lower mold frame 10 are positioned correspondingly.

[0030] Please see Figure 5 In one embodiment, preferably, the two ends of the punch 12 are respectively provided with a first boss 121 and a second boss 122. The first boss 121 cooperates with the third groove 111 on the punch fixing block 11 to prevent the punch 12 from falling off during processing. The second boss 122 can prevent the punch 12 from shifting under force during punching, thereby improving the accuracy and dimensional stability of the punching section and improving product quality.

[0031] Please see Figure 1In one embodiment, preferably, it further includes a slider 1 disposed on the upper die frame 2. The slider 1 is connected to a solenoid valve on the punch press. The solenoid valve is provided with an air pipe, which includes an air inlet pipe and an air outlet pipe. The air outlet pipe is connected to a pneumatic quick-connect fitting 23. During the punching process of the upper die frame 2, the slider 1 moves together with the upper die frame 2. When the slider 1 descends to the lowest point, the solenoid valve is energized, the valve opens, the air path is opened, and the gas is blown out through the air path. When the slider 1 rises to the highest point, the solenoid valve is de-energized, the valve closes, and the gas stops blowing out.

[0032] The working principle and usage process of this utility model are as follows: First, install the mold on the punch press. Then, use an air pipe to connect the pneumatic quick connector 23 on the upper mold pad 3 to the solenoid valve to ensure that the air path is unobstructed. Place the product to be processed on the mold, start the punch press, and make it descend from the highest point to the lowest point to complete the punching operation. After the punching is completed, the punch press starts to move upward. At the same time, the solenoid valve is energized, the air path is connected, and the gas blows away the waste material on the punch through the pipe. When the punch press moves upward to the highest point, the solenoid valve is de-energized, the air path is disconnected, and thus a complete stamping stroke ends.

[0033] Although this specification describes embodiments, not every embodiment contains only one independent technical solution; this narrative style is merely for clarity; those skilled in the art should consider the specification as a whole; the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0034] Therefore, the above description is only a preferred embodiment of this application and is not intended to limit the scope of this application; that is, all equivalent modifications made in accordance with the claims of this application are within the scope of protection of the claims of this application.

Claims

1. A combined punching die, comprising an upper die set and a lower die set, wherein an upper die pad is provided on the end face of the upper die set adjacent to the lower die set, and an upper die fixing plate is provided on the end face of the upper die pad away from the upper die set, and a punch is mounted on the upper die fixing plate, characterized in that; The punch has a through hole that passes through the upper and lower surfaces. The upper die pad has a gas channel that communicates with the through hole. A pneumatic quick-connect connector is provided at the opening of the gas channel away from the through hole. Gas that enters the through hole through the gas channel can be blown out from the opening of the through hole away from the gas channel.

2. The combined punching die according to claim 1, characterized in that, The upper mold frame is equipped with a plurality of first positioning pins, the ends of which pass through the upper mold pad and the upper mold fixing plate in sequence. The upper mold fixing plate is equipped with a plurality of first bolts, the ends of which pass through the upper mold fixing plate and the upper mold pad in sequence and are threadedly connected to the upper mold frame.

3. The combined punching die according to claim 1, characterized in that, The gas passage has an internal thread at the opening end near the pneumatic quick-connect fitting, and the pneumatic quick-connect fitting is adapted to the internal thread of the gas passage.

4. The combined punching die according to claim 1, characterized in that, The upper mold fixing plate has a first groove that runs through its upper and lower end faces. A punch fixing block that matches the first groove is provided in the first groove. A second bolt is installed on the punch fixing block to connect it to the upper mold pad.

5. The combined punching die according to claim 1, characterized in that, A lower mold pad is installed on the end face of the lower mold frame near the upper mold frame. A lower mold fixing plate is installed on the lower mold pad. The lower mold fixing plate has a second groove that passes through the upper and lower end faces. A cavity insert that matches the second groove is provided in the second groove. A fifth bolt is installed on the cavity insert to connect it to the lower mold pad.

6. The combined punching die according to claim 5, characterized in that, The lower mold frame is equipped with several third positioning pins, the ends of which pass through the lower mold pad and the lower mold fixing plate in sequence. The lower mold fixing plate is equipped with several fourth bolts, the ends of which pass through the lower mold fixing plate and the lower mold pad in sequence and are threadedly connected to the lower mold frame.

7. The combined punching die according to claim 6, characterized in that, A limit baffle is installed on the end face of the lower mold fixing plate away from the lower mold pad. The limit baffle is connected to the lower mold fixing plate by a third bolt, and the limit baffle and the lower mold fixing plate are positioned by a second positioning pin.

8. The combined punching die according to claim 1, characterized in that, The upper mold frame and the lower mold frame are connected by a limiting mechanism, which includes a guide sleeve installed on the upper mold frame and a guide post installed on the lower mold frame. The guide post and the lower mold frame are positioned correspondingly.

9. The combined punching die according to claim 1, characterized in that, The punch has a first boss and a second boss at both ends, wherein the first boss cooperates with a third groove on the punch fixing block.

10. The combined punching die according to claim 1, characterized in that, The device further includes a slider mounted on the upper die frame. The slider is connected to a solenoid valve on the punch press. The solenoid valve is equipped with an air pipe, which includes an air inlet pipe and an air outlet pipe. The air outlet pipe is connected to a pneumatic quick-connect fitting. During the punching process of the upper die frame, the slider moves together with the upper die frame. When the slider descends to the lowest point, the solenoid valve is energized. When the slider rises to the highest point, the solenoid valve is de-energized.

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