Continuous cutting and turning punch forming structure

Abstract

The utility model relates to the technical field of punch forming, in particular to a continuous cutting and flanging punch forming structure which comprises a lower die assembly and an upper die assembly, the lower die assembly comprises a lower die base, a lower flanging forming male and a lower trimming punch, and a trimming lower flanging forming hole is formed between the lower flanging forming male and the lower trimming punch; the upper die assembly comprises a trimming downward-turning forming male part, a first material pressing plate, a second material pressing plate, a first material pressing driver and a second material pressing driver, a trimming downward-turning head is arranged at the bottom end of the trimming downward-turning forming male part and matched with the trimming downward-turning forming hole in a concave-convex mode, the first material pressing driver drives the first material pressing plate to be close to or away from the downward-turning forming male part, and the second material pressing driver drives the second material pressing plate to be close to or away from the downward-turning forming male part. The second material pressing driver drives the second material pressing plate to be close to or away from the downward-turning forming male part. According to the edge cutting and downward turning forming device, the structure is simple, before edge cutting and downward turning forming are conducted on a material belt, the stability and quality of edge cutting and downward turning forming conducted on the material belt are improved through pressing of the first material pressing plate and the second material pressing plate, and the efficiency of edge cutting and downward turning forming is high.

Description

Technical Field

[0001] The utility model relates to the technical field of stamping and forming, in particular to a continuous cutting and flipping stamping and forming structure. Background Art

[0002] In the stamping industry, it is often necessary to trim and flanging the material strip. In the existing technology, a cutting and flanging integrated mold structure can be used to improve production efficiency. However, a slider flanging structure is generally adopted during flanging. In many cases, the slider cannot be used due to space limitations, and the only option is to increase the slider side repair process or increase the size of the mold, resulting in a complex mold structure and increasing the manufacturing cost of the mold.

[0003] Among the existing patents, the Chinese patent document with application number 202021641788.1 discloses a stamping aluminum foil flipping die structure, including a trimming knife block, a floating plate for supporting the material that elastically rises and falls along the side wall of the trimming knife block, a trimming punch arranged above the trimming knife block, and a flanging punch spaced apart from the trimming knife block; the distance between the trimming punch and the flanging punch is consistent with the top width of the trimming knife block, the flanging punch and the trimming punch move synchronously, the trimming punch cooperates with the trimming knife block to cut the material, and the flanging punch cooperates with the floating plate to bend the material. In the process of trimming and flanging the material, this patent document directly cooperates with the trimming knife block by moving the trimming punch downward to trim the edge material. Since the edge material of the material is not supported during cutting, the stability of the material is relatively poor, so it is difficult to ensure the trimming quality, and trimming burrs are prone to occur. Therefore, the defects are very obvious, and there is an urgent need to provide a solution. Utility Model Content

[0004] In order to solve the above technical problems, the purpose of the present utility model is to provide a continuous cutting and flipping stamping forming structure.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] The cam is secured to the bottom of the mould by a secure coupling between the mould and the base, and the cam is secured to the bottom of the mould by a secure coupling between the mould and the base.

[0007] Furthermore, the lower die assembly also includes a lower lifting plate that is lifted and arranged on a side of the lower flip forming shaft away from the lower trimming punch.

[0008] Furthermore, the first pressing drive includes a first nitrogen spring and a first upper pad, the first nitrogen spring is connected to the top surface of the first upper pad, and the first pressing plate is installed on the bottom surface of the first upper pad.

[0009] Furthermore, the second pressing drive includes a second nitrogen spring and a second upper pad, the second nitrogen spring is connected to the top surface of the second upper pad, and the second pressing plate is installed on the bottom surface of the second upper pad.

[0010] Furthermore, a positioning hole is concavely provided on the top surface of the downward-turned forming male, and a positioning column is provided on the first pressing plate, and the positioning column is used to fit concavely and convexly with the positioning hole.

[0011] Furthermore, a material strip positioning pin is provided on the top surface of the downward-turned forming rod, and a recessed hole is provided on the bottom surface of the first pressing plate, and the recessed hole is used for inserting the material strip positioning pin.

[0012] The beneficial effects of the utility model are as follows: in actual application, the upper die assembly and the lower die assembly are in the mold opening state, the material strip is located on the lower die assembly, and the trimming and downward turning forming male is connected to the punch of the punching machine; when the material strip needs to be trimmed and downward turned, the first material pressing driver drives the first material pressing plate to move downward, so that the first material pressing plate presses the main body of the material strip, and the second material pressing driver drives the second material pressing plate to move downward, so that the second material pressing plate presses the edge of the material strip, and then the punch of the punching machine drives the trimming and downward turning forming male to move downward, so that the trimming blade of the trimming and downward turning forming male cooperates with the trimming blade of the lower trimming punch to cut off the edge of the material strip, so that the edge of the material strip is The downward-turning forming portion is separated from the edge material of the material strip. As the trimming downward-turning forming male moves downward, the trimming downward-turning forming male gradually enters the trimming downward-turning forming hole. Under the cooperation of the downward-turning forming profile of the trimming downward-turning forming male and the downward-turning forming profile of the downward-turning forming male, the downward-turning forming portion of the material strip is downward-turned (downward-flanging forming). After the trimming downward-turning forming of the material strip is completed, the punch of the punching machine drives the trimming downward-turning forming male to move up and reset, the first pressing drive drives the first pressing plate to move up and reset, and the second pressing drive drives the second pressing plate to move up and reset, so as to facilitate the trimming downward-turning forming of the next downward-turning forming portion on the material strip. The structure of the utility model is simple. Before the trimming downward-turning forming of the material strip is performed, the material strip is pressed by the first pressing plate and the second pressing plate, thereby improving the stability and quality of the trimming and downward-flanging forming of the material strip, and the efficiency of the trimming downward-turning forming is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a cross-sectional view of the utility model in the mold closing state.

[0014] Figure 2 It is a schematic diagram of the three-dimensional structure of the upper mold assembly of the present utility model.

[0015] Figure 3 It is a schematic diagram of the three-dimensional structure of the lower mold assembly of the present utility model.

[0016] Description of reference numerals:

[0017] 1. Lower die assembly; 2. Upper die assembly; 3. Lower die base; 4. Down-turning forming pin; 5. Lower trimming punch; 6. Down-turning forming hole for trimming; 7. Down-turning forming pin for trimming; 8. First pressing plate; 9. Second pressing plate; 10. First pressing drive; 11. Second pressing drive; 12. Down-turning head for trimming; 13. Lower lifting plate; 14. First nitrogen spring; 15. First upper pad; 16. Second nitrogen spring; 17. Second upper pad; 18. Positioning hole; 19. Material strip positioning pin; 20. Material strip; 21. Positioning column. DETAILED DESCRIPTION

[0018] In order to facilitate understanding by those skilled in the art, the present invention is further described below with reference to embodiments and drawings. The contents mentioned in the embodiments are not intended to limit the present invention.

[0019] like Figures 1 to 3 As shown, the utility model provides a continuous cutting and turning stamping forming structure, which includes a lower die assembly 1 and an upper die assembly 2 arranged above the lower die assembly 1, the lower die assembly 1 includes a lower die base 3 and a lower turning forming male 4 and a lower trimming punch 5 respectively installed on the lower die base 3, and a trimming lower turning forming hole 6 is provided between the lower turning forming male 4 and the lower trimming punch 5; the upper die assembly 2 includes a trimming lower turning forming male 7, a first pressing plate 8 arranged on one side of the trimming lower turning forming male 7, a second pressing plate 9 arranged on the other side of the trimming lower turning forming male 7, and a first pressing plate 8 arranged on the other side of the trimming lower turning forming male 7. The first pressing plate 8 is driven by a first pressing drive 10 connected to the pressing plate 8 and the second pressing plate 9 is driven by a second pressing drive 11 connected to the second pressing plate 9. The bottom end of the trimming and downward turning forming male 7 is provided with a trimming and downward turning head 12. The trimming and downward turning head 12 is concavely and convexly adapted to the trimming and downward turning forming hole 6. The first pressing plate 8 is correspondingly arranged to the downward turning forming male 4, and the second pressing plate 9 is correspondingly arranged to the lower trimming punch 5. The first pressing drive 10 is used to drive the first pressing plate 8 to approach or move away from the downward turning forming male 4, and the second pressing drive 11 is used to drive the second pressing plate 9 to approach or move away from the downward turning forming male 4.

[0020] In actual application, the upper die assembly 2 and the lower die assembly 1 are in the mold opening state, the material strip 20 is located on the lower die assembly 1, and the trimming and downward turning forming male 7 is connected to the punch of the punching machine; when the material strip 20 needs to be trimmed and downward turned, the first pressing driver 10 drives the first pressing plate 8 to move downward, so that the first pressing plate 8 presses the main body of the material strip 20, and the second pressing driver 11 drives the second pressing plate 9 to move downward, so that the second pressing plate 9 presses the edge of the material strip 20, and then the punch of the punching machine drives the trimming and downward turning forming male 7 to move downward, so that the trimming blade of the trimming and downward turning forming male 7 cooperates with the trimming blade of the lower trimming punch 5 to cut off the edge of the material strip 20, so that the downward turning forming part of the material strip 20 is aligned with the cutting blade of the lower trimming punch 5. The edge material of the material strip 20 is separated, and as the trimming and downward-turning forming male 7 moves downward, the trimming and downward-turning forming male 7 will gradually enter the trimming and downward-turning forming hole 6, and with the cooperation of the downward-turning forming contour of the trimming and downward-turning forming male 7 and the downward-turning forming contour of the downward-turning forming male 4, the downward-turning forming part of the material strip 20 is downward-turned (downward-flanging forming); after completing the trimming and downward-turning of the material strip 20, the punch of the punching machine drives the trimming and downward-turning forming male 7 to move up and reset, the first pressing driver 10 drives the first pressing plate 8 to move up and reset, and the second pressing driver 11 drives the second pressing plate 9 to move up and reset, so as to facilitate the trimming and downward-turning (trimming and downward-flanging forming) of the next downward-turned forming part on the material strip 20. The structure of the present invention is simple. Before the material strip 20 is trimmed and turned down to form, the material strip 20 is pressed by the first pressing plate 8 and the second pressing plate 9, which improves the stability and quality of the trimming and turning down forming of the material strip 20, and the efficiency of the trimming and turning down forming is high.

[0021] In this embodiment, the lower die assembly 1 further includes a lower lifting plate 13 that is raised and lowered on the side of the lower forming core 4 away from the lower trimming punch 5. After the trimming and downward forming of the downwardly formed portion of the strip 20 is completed, the upper die assembly 2 and the lower die assembly 1 are opened, and the lower lifting plate 13 lifts the strip 20 to enable progressive feeding of the strip 20.

[0022] In this embodiment, the first blank holder driver 10 includes a first nitrogen gas spring 14 and a first upper plate 15. The first nitrogen gas spring 14 is connected to the top surface of the first upper plate 15, and the first blank holder 8 is mounted on the bottom surface of the first upper plate 15. In actual use, the first nitrogen gas spring 14 drives the first upper plate 15 and the first blank holder 8 to rise and fall.

[0023] In this embodiment, the second blank holder driver 11 includes a second nitrogen gas spring 16 and a second upper plate 17. The second nitrogen gas spring 16 is connected to the top surface of the second upper plate 17, and the second blank holder 9 is mounted on the bottom surface of the second upper plate 17. In actual use, the second nitrogen gas spring 16 drives the second upper plate 17 and the second blank holder 9 to rise and fall.

[0024] In this embodiment, a positioning hole 18 is recessed on the top surface of the downward-turning forming pin 4, and a positioning post 21 is provided on the first blank holder 8. The positioning post 21 is adapted to fit concavely and convexly into the positioning hole 18. When the first blank holder 8 presses the strip 20 against the downward-turning forming pin 4, the positioning post 21 is inserted into the positioning hole 18, thereby improving the positional accuracy and stability of the first blank holder 8 and the downward-turning forming pin 4 during the mold closing process.

[0025] In this embodiment, the top surface of the downward-turned forming core 4 is provided with a plurality of strip positioning pins 19, and the bottom surface of the first pressing plate 8 is provided with a plurality of recessed holes. The plurality of recessed holes are respectively provided in a one-to-one correspondence with the plurality of strip positioning pins 19. The recessed holes are used to insert the strip positioning pins 19. The strip positioning pins 19 can pass through the holes of the strip 20 to position the strip 20, thereby improving the positioning accuracy and stability of the strip 20.

[0026] All technical features in this embodiment can be freely combined according to actual needs.

[0027] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the scope of protection of the present invention.

Claims

1. A continuous cutting and flipping stamping structure, characterized by: The invention comprises a lower die assembly (1) and an upper die assembly (2) arranged above the lower die assembly (1); the lower die assembly (1) comprises a lower die base (3) and a downward-turning forming pin (4) and a downward-cutting punch (5) respectively arranged on the lower die base (3); a downward-turning forming hole (6) is arranged between the downward-turning forming pin (4) and the downward-cutting punch (5); the upper die assembly (2) comprises a downward-turning forming pin (7), a first pressing plate (8) arranged on one side of the downward-turning forming pin (7), a second pressing plate (9) arranged on the other side of the downward-turning forming pin (7), a first pressing plate (8) drivingly connected to the first pressing plate (8), and a second pressing plate (9) drivingly connected to the first pressing plate (8). The driver (10) and the second pressing driver (11) are connected to the second pressing plate (9), the bottom end of the trimming and turning-down forming male (7) is provided with a trimming and turning-down head (12), the trimming and turning-down forming hole (6) is concavely adapted to the trimming and turning-down forming hole (6), the first pressing plate (8) is provided corresponding to the turning-down forming male (4), the second pressing plate (9) is provided corresponding to the cutting and turning-down punch (5), the first pressing driver (10) is used to drive the first pressing plate (8) to approach or move away from the turning-down forming male (4), and the second pressing driver (11) is used to drive the second pressing plate (9) to approach or move away from the turning-down forming male (4).

2. The continuous cutting and flipping stamping structure according to claim 1, characterized in that: The lower die assembly (1) also includes a lower lifting plate (13) which is arranged to be lifted and lowered on a side of the lower flip forming pin (4) away from the lower trimming punch (5).

3. The continuous cutting and flipping stamping structure according to claim 1, characterized in that: The first pressing drive (10) includes a first nitrogen spring (14) and a first upper pad (15). The first nitrogen spring (14) is connected to the top surface of the first upper pad (15). The first pressing plate (8) is installed on the bottom surface of the first upper pad (15).

4. The continuous cutting and flipping stamping structure according to claim 1, characterized in that: The second pressing drive (11) includes a second nitrogen spring (16) and a second upper pad (17). The second nitrogen spring (16) is connected to the top surface of the second upper pad (17). The second pressing plate (9) is installed on the bottom surface of the second upper pad (17).

5. The continuous cutting and flipping stamping structure according to claim 1, characterized in that: A positioning hole (18) is concavely provided on the top surface of the downward-turned forming male (4), and a positioning column (21) is provided on the first pressing plate (8). The positioning column (21) is used for concave-convex matching with the positioning hole (18).

6. The continuous cutting and flipping stamping structure according to claim 1, characterized in that: The top surface of the downward-turned forming rod (4) is provided with a material belt positioning pin (19), and the bottom surface of the first pressing plate (8) is concavely provided with a clearance hole for inserting the material belt positioning pin (19).

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