Die for laterally punching end face

Abstract

The invention discloses a die for laterally punching an end face. The die comprises a female die insert, a positioning groove is formed in the side face of the female die insert, the upper end of the female die insert is matched with a main material pressing block, one side face of the female die insert is matched with a first wedge, the first wedge is connected with a first sliding block, and the first sliding block is connected with a first material pressing block and a first male die to punch the side end of the female die insert; the other side face of the female die insert is provided with a second wedge in a matched mode, the second wedge is connected with a second sliding block, and the second sliding block is connected with a second pressing block and a second male die to punch the other side end of the female die insert. According to the die, the appearance and the inner hole of the conductive piece are used for positioning, and a wedge and sliding block structure is ingeniously used for converting the blanking force of a punching machine in the vertical direction into a transverse and inclined plane movement die structure. When the die is stressed, the material pressing block firstly presses a semi-finished product to prevent a part from shaking, the wedge acts on the sliding block, the sliding block moves along the guide block, the sliding block drives the material pressing block, the material pressing block presses a conductive part under the action of the spring, the male die works again, and the end face punching quality is guaranteed.

Description

Technical Field

[0001] The present invention belongs to the technical field of stamping dies, and particularly relates to a die for lateral punching of end faces. Background Art

[0002] A certain switch conductive part is a common part in the company. Its specific structure is as shown in Figure 1 and Figure 2 It is made of 0.5mm thick stainless steel 1Cr18Ni9. Its forming process is: blanking, bending, and edge trimming. The inclined edge trimming is a technical difficulty of this part. After bending, there is material extrusion on the inclined edge of the part, and burrs affect the product appearance and switch performance. The technical requirement of the product is that the end face of the inclined edge is smooth. Therefore, how to remove the burrs on the inclined end has become a difficulty. Summary of the Invention

[0003] In order to solve the above problems, the present invention aims to provide a die for lateral punching of end faces.

[0004] In order to achieve the above purpose, the present invention adopts the following technical solutions: A die for lateral punching of end faces includes a concave die insert with a positioning groove on the side. The upper end of the concave die insert is equipped with a main pressure block.

[0005] One side is equipped with a first inclined wedge, the first inclined wedge is connected with a first slider, and a first pressure block and a first punch are connected to the first slider to punch the side end of the concave die insert.

[0006] The other side is equipped with a second inclined wedge, the second inclined wedge is connected with a second slider, and a second pressure block and a second punch are connected to the second slider to punch the other side end of the concave die insert.

[0007] Preferably, a positioning pin is arranged above the concave die insert, positioning grooves are arranged at both side ends thereof, and the outer shape of the concave die insert is adapted to the part to be stamped.

[0008] Preferably, the die includes an upper die base and a lower die base. An upper backing plate, an upper lining plate, and an upper fixing plate are sequentially arranged below the upper die base from top to bottom. A lower backing plate, a lower lining plate, and a concave template are sequentially arranged above the lower die base from bottom to top. A guide post is arranged between the concave template and the upper lining plate.

[0009] Preferably, a main pressure block is arranged in the middle of the die. One end of the main pressure block is provided with a second spring and fixed on the upper die base, and the other end is in telescopic contact with the concave die insert.

[0010] Preferably, a second inclined wedge is arranged at one side end of the die. One end of the second inclined wedge is fixed on the upper lining plate, and the other end is in contact with the second slider stop block. Three second sliders are arranged on the second slider stop block. A second punch and a second pressure block are respectively arranged in the grooves formed between the second sliders. A third spring is also arranged between the second pressure block and the second slider stop block.

[0011] Preferably, a second slider guide block is further provided directly below the second inclined wedge. The outer end of the second slider contacts the second slider guide block. The second inclined wedge and the second slider stop block, and the second slider and the second slider guide block are in inclined surface contact.

[0012] Preferably, a first inclined wedge is provided at the other end of the mold. One end of the first inclined wedge is fixed on the upper lining plate, and the other end contacts the first slider. A first stop block is provided at the side end of the first slider. A first pressure block is connected in the middle through a first spring. The lower end of the first slider is further connected with a first punch.

[0013] Preferably, a first slider stop block is provided on the back of the first slider and the first punch.

[0014] Preferably, a mold shank is provided on the upper die base.

[0015] Compared with the prior art, the present invention has the following advantages: Burr machining and cutting of both end faces are completed in a set of molds. The vertical blanking force of the punching machine is converted into a transverse and inclined surface movement punching die structure by using the inclined wedge and slider structure. Compared with the traditional die structure, this structure saves die, production, and labor costs, and the formed product has stable dimensions and accurate positioning, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the specific embodiments of the present invention, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following described drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is the front view of the formed conductive part in the present invention;

[0018] Figure 2 It is the top view of the formed conductive part in the present invention;

[0019] Figure 3 It is the front view of the die insert in the present invention;

[0020] Figure 4 It is the top view of the die insert in the present invention;

[0021] Figure 5 It is the schematic diagram of the die structure in the present invention;

[0022] In the figure, 1 - upper die holder, 2 - upper backing plate, 3 - upper liner plate, 4 - upper fixing plate, 5 - first wedge, 6 - first stop block, 7 - first blank holder, 8 - first spring, 9 - first slider, 10 - first punch, 11 - first slider stop block, 12 - die plate, 13 - lower liner plate, 14 - lower backing plate, 15 - lower die holder, 16 - die insert, 17 - semi-finished conductive part, 18 - main blank holder, 19 - second spring, 20 - die shank, 21 - locating pin, 22 - second wedge, 23 - second slider stop block, 24 - third spring, 25 - second blank holder, 26 - guide pillar, 27 - locating groove, 28 - second punch, 29 - second slider, 30 - second slider guide block. Detailed implementation mode

[0023] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments. However, it should not be understood that the scope of the subject matter of the present invention is limited to the following embodiments. Without departing from the above technical idea of the present invention, all modifications, substitutions and changes made according to common technical knowledge and conventional means in the art are included in the scope of the present invention.

[0024] Aiming at the problem that it is difficult to remove the burrs on the inclined end face of the conductive part, a die for side punching the end face is provided, and the burr machining of both end faces is completed in a set of dies, thereby improving the part quality and production efficiency.

[0025] To achieve the above object, the present patent adopts the following technical solutions: a blanking die and a bending die are used to form a semi-finished product, such as Figure 1 and Figure 2 ;

[0026] The die for removing the burrs of the conductive part 17 uses the inner hole and outer shape of the part for positioning. The die insert 16 is designed with a locating groove 27 and a locating pin 21. The bilateral locating grooves cooperate with the slider, and a locating pin 21 is arranged above to achieve three-dimensional positioning. Refer to Figure 3 and Figure 4 , and the burr punching process of the conductive part is completed by the side slider inclined plane punching method and the transverse punching method;

[0027] Refer to Figure 5 , the die includes an upper die holder 1 and a lower die holder 15. Below the upper die holder 1, an upper backing plate 2, an upper liner plate 3 and an upper fixing plate 4 are sequentially arranged from top to bottom. Above the lower die holder 15, a lower backing plate 14, a lower liner plate 13 and a die plate 12 are sequentially arranged from bottom to top. A guide pillar 26 is arranged between the die plate 12 and the upper liner plate 3. The guide pillar 26 passes through the upper liner plate 3 and forms a guiding fit with the die plate 12. A die shank 20 is arranged on the upper die holder 1.

[0028] The female die insert 16 with a positioning groove on the side is provided. A main pressure pad 18 is provided at the upper end of the female die insert 16, and a first inclined wedge 5 is provided on one side. The first inclined wedge (5) is connected to a first slider 9. A first pressure pad 7 and a first punch 10 are connected to the first slider 9 to punch the side end of the female die insert 16. One end of the first inclined wedge 5 is fixed on the upper lining plate 3, and the other end contacts the first slider 9. A first stop block 6 is provided at the side end of the first slider 9, and a first pressure pad 7 is connected in the middle through a first spring 8. The lower end of the first slider 9 is also connected to a first punch 10. A first slider stop block 11 is provided on the back of the first slider 9 and the first punch 10.

[0029] A second inclined wedge 22 is provided on the other side. The second inclined wedge 22 is connected to a second slider 29. A second pressure pad 25 and a second punch (28) are connected to the second slider 29 to punch the other side end of the female die insert 16. One end of the second inclined wedge 22 is fixed on the upper lining plate 3, and the other end contacts the second slider stop block 23. Three second sliders 29 are provided on the second slider stop block 23. The second punch 28 and the second pressure pad 25 are respectively provided in the grooves formed between the second sliders 29. A third spring 24 is also provided between the second pressure pad 25 and the second slider stop block 23. A second slider guide block 30 is also provided directly below the second inclined wedge 22. The outer end of the second slider 29 contacts the second slider guide block 30. The second inclined wedge 22 and the second slider stop block 23, and the second slider 29 and the second slider guide block 30 are in inclined plane contact.

[0030] Its working principle is as follows:

[0031] After the mold is installed on the stamping machine and debugged, the semi-finished conductive part 17 is placed and positioned by the mold positioning pins 21. At the same time, a positioning groove 27 is designed on the side of the female die insert 16 to achieve longitudinal positioning.

[0032] Step on the pedal on the press, the upper die descends, and the upper and lower dies are correctly closed. The process can be divided into 2 stages:

[0033] The first stage: When the mold is in the open die state, the main pressure pad 18 is in the natural state under the action of the second spring 19. When the mold descends, the main pressure pad 18 first contacts the semi-finished conductive part 17. When the mold continues to descend, the main pressure pad 18 compresses the second spring 19 and presses the semi-finished conductive part 17 tightly.

[0034] The first inclined wedge 5 acts on the first slider 9 and compresses the first spring 8, laterally pushing the first pressure pad 7 to laterally press the semi-finished conductive part 17 tightly. At the same time, the first slider 9 moves to the left to drive the first punch 10 to cut the right end face of the conductive part 17.

[0035] The second inclined wedge 22 acts on the second slider stop 23. Under the action of the second slider guide block 30, the second slider 29 moves obliquely downward along the second slider guide block 30. The second blank holder 25 first contacts the semi-finished conductive part 17. Under the action of the third spring 24, the second blank holder 25 presses the semi-finished conductive part 17 tightly. At the same time, the second punch 27 cuts the inclined end face of the conductive part 17. When the mold moves upward, each slider resets, and each blank holder no longer acts on the conductive part. The punch withdraws from the die insert 16, and the conductive part is taken out, and thus the processing of one part is completed.

[0036] The present invention makes full use of the inclined wedge and slider structure to convert the vertical punching force of the punching press into the punching force of the horizontal and inclined plane movements. Compared with the traditional die structure, this patent saves die, production, and labor costs, and the formed product has stable dimensions and accurate positioning. Through the synergistic effect of the symmetric inclined wedge mechanism and the multi-directional blank holding system, the problem of workpiece deformation caused by traditional single-sided punching is effectively solved, and the processing accuracy and efficiency are improved. Its modular design is convenient for maintenance and grinding, and the inclined plane transmission mechanism can effectively convert the vertical pressure into the horizontal punching force. This die structure provides a reference for future inclined plane punching and horizontal punching.

[0037] The above has introduced in detail a die for lateral punching of end faces provided by the present invention. Specific examples are used in this article to elaborate on the structure and working principle of the present invention. The description of the above embodiments is only used to help understand the method and core idea of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can still be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A die for lateral punching end faces, characterized in that: It includes a concave die insert (16) with a positioning groove on the side. The upper end of the concave die insert (16) is equipped with a main pressure pad (18). One side is equipped with a first swaging wedge (5). The first swaging wedge (5) is connected to a first slider (9). A first pressure pad (7) and a first punch (10) are connected to the first slider (9) to perform punching on the side end of the concave die insert (16). The other side is equipped with a second swaging wedge (22). The second swaging wedge (22) is connected to a second slider (29). A second pressure pad (25) and a second punch (28) are connected to the second slider (29) to perform punching on the other side end of the concave die insert (16).

2. The die for laterally punching the end face according to claim 1, characterized in that: A positioning pin (21) is provided above the concave die insert (16). Positioning grooves are provided at both side ends. The outer shape of the concave die insert (16) is adapted to the part to be stamped.

3. The die for laterally punching the end face according to claim 1, characterized in that: The die includes an upper die base (1) and a lower die base (15). An upper backing plate (2), an upper liner plate (3), and an upper fixing plate (4) are sequentially arranged below the upper die base (1) from top to bottom. A lower backing plate (14), a lower liner plate (13), and a concave die plate (12) are sequentially arranged above the lower die base (15) from bottom to top. A guide post (26) is provided between the concave die plate (12) and the upper liner plate (3). The guide post (26) passes through the upper liner plate (3) and forms a guiding fit with the concave die plate (12).

4. The die for laterally punching the end face according to claim 1, characterized in that: A main pressure pad (18) is provided in the middle of the die. One end of the main pressure pad (18) is provided with a second spring (19) and is fixed on the upper die base (1), and the other end is in elastic contact with the concave die insert (16).

5. The die for laterally punching and cutting an end face according to claim 1, wherein: A second swaging wedge (22) is provided at one side end of the die. One end of the second swaging wedge (22) is fixed on the upper liner plate (3), and the other end is in contact with a second slider stop block (23). Three second sliders (29) are provided on the second slider stop block (23). A second punch (28) and a second pressure pad (25) are respectively arranged in the grooves formed between the second sliders (29). A third spring (24) is also provided between the second pressure pad (25) and the second slider stop block (23).

6. The die for laterally punching and cutting end faces according to claim 5, characterized in that: A second slider guide block (30) is also provided directly below the second swaging wedge (22). The outer end of the second slider (29) is in contact with the second slider guide block (30). The second swaging wedge (22) and the second slider stop block (23), and the second slider (29) and the second slider guide block (30) are in inclined plane contact.

7. The die for laterally punching the end face according to claim 1, wherein: A first swaging wedge (5) is provided at the other side end of the die. One end of the first swaging wedge (5) is fixed on the upper liner plate (3), and the other end is in contact with the first slider (9). A first stop block (6) is provided at the side end of the first slider (9). A first pressure pad (7) is connected in the middle through a first spring (8). The lower end of the first slider (9) is also connected to a first punch (10).

8. The die for laterally punching and cutting end faces according to claim 7, characterized in that: A first slider stop block (11) is provided on the back of the first slider (9) and the first punch (10).

9. The die for laterally punching and cutting an end face according to claim 3, wherein: A die handle (20) is provided on the upper die base (1).

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