A bending stamping die

Abstract

The utility model relates to the technical field of stamping dies, and specifically to a bending stamping die, comprising a connecting piece, an upper die assembly, and a lower die assembly arranged at the lower end of the upper die assembly, the upper die assembly comprising a bending punch, the lower die assembly comprising a mother die and a lower die seat connected to the lower end of the mother die, the lower end of the connecting piece is connected to the lower die seat, a first bending portion is provided between the connecting piece and the mother die, a first profile groove is provided at the upper end of the mother die, the bending punch is plugged into the first profile groove and is used to bend a sheet material into a stamping part, a first accommodating groove connected to the first profile groove is provided at the upper end of the first bending portion, the first accommodating groove is used for placing the side of the sheet material to be bent, one end of the connecting piece passes through the first accommodating groove and extends to the first profile groove with a stripping block, the stripping block is used to abut against the side wall of the bending punch. Compared with the prior art, the bending stamping die of the utility model adds a connecting piece with a stripping function, which is convenient for stripping production, and there is no need to add a stripping structure in the die.

Description

Technical Field

[0001] The utility model relates to the technical field of stamping dies, in particular to a bending stamping die. Background Art

[0002] Stamping dies are a relatively common type of dies. At present, sheet metal parts in most industries need to be bent and formed by stamping dies. The prior art discloses a multi-directional bending die with application number 202120660416.1, which includes an upper die and a lower die, the upper die includes an upper template and a punch head, the lower die includes a lower template, a stripper plate, and a plurality of bending parts arranged around the stripper plate, and there is a height difference between adjacent bending parts. Each bending part is provided with a resistance member arranged along its long direction on the side facing the stripper plate, and the resistance member is used to resist the product to be bent; the punch head and the stripper plate are arranged relative to each other up and down, and the product to be bent is placed on the stripper plate and the bending member, and the punch head is used to push the product to be bent and the stripper plate to move downward, so that the product to be bent and the resistance members of the plurality of bending members are successively resisted until the edge of the product bulges upward to form a plurality of bending parts. The multi-directional bending die designed by the utility model has a height difference of multiple bending parts, which makes the product bending in sequence and avoids bending in the opposite direction at the same time, thereby improving the processing efficiency and product quality; and by arranging a resistance part on the bending part, the product scratches are reduced and the parts cost is reduced.

[0003] However, after the product is stamped, when the side with the folded edge is bent, the folded edge will be stuck on the punching head of the upper mold, which is not convenient to remove, affecting production efficiency. If a movable stripping pin is added to the upper template, the structure is complicated and inconvenient to install. At the same time, the product to be bent of the above mold is placed on the stripping plate and the bending part, and there is no corresponding positioning part, which makes it difficult to position the product, affecting the shape and dimensional accuracy of the folded edge. Summary of the invention

[0004] In order to overcome the shortcomings and deficiencies in the prior art, the utility model aims to provide a bending stamping die that is easy to use and has strong practicality.

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

[0006] A bending stamping die comprises a connecting piece, an upper die assembly and a lower die assembly arranged at the lower end of the upper die assembly, the upper die assembly comprises a bending punch, the lower die assembly comprises a mother die and a lower die base connected to the lower end of the mother die, the lower end of the connecting piece is connected to the lower die base, a first bending portion is arranged between the connecting piece and the mother die, a first groove is arranged at the upper end of the mother die, the bending punch is plugged into the first groove and is used to bend a sheet material into a stamping part, a first accommodating groove connected to the first groove is arranged at the upper end of the first bending portion, the first accommodating groove is used to place the side of the sheet material to be bent, one end of the connecting piece passes through the first accommodating groove and extends to the first groove with a stripping block, the stripping block is used to abut against the side wall of the bending punch.

[0007] Furthermore, the connecting member extends a positioning block toward the first bending portion, the upper end of the positioning block is connected to the lower end of the stripping block, the lower end of the positioning block is arranged in the first accommodating groove, and the side wall of the positioning block is used to abut against the side of the sheet to be bent.

[0008] Furthermore, a first connecting portion is provided between the mother mold and the first bending portion, and a first arc groove connected to the first groove is opened at one end of the first connecting portion close to the mother mold. The first arc groove is used for placing the bent side of the stamping part, and the stripping block is located above the first arc groove.

[0009] Furthermore, a first arc-shaped portion protrudes from one end of the first bending portion close to the first connecting portion, and the first bending portion and the first connecting portion are transitionally connected via the first arc-shaped portion.

[0010] Furthermore, a second bending portion is provided at one end of the mother mold away from the first bending portion, and a second accommodating groove connected to the first groove is opened at the upper end of the second bending portion, and the second accommodating groove is used for placing the side of the sheet material to be bent.

[0011] Furthermore, a second connecting portion is provided between the mother mold and the second bending portion, and a second arc groove connected to the first groove is opened at one end of the second connecting portion close to the mother mold, and the second arc groove is used for placing the bent side of the stamping part.

[0012] Furthermore, a second arc-shaped portion protrudes from one end of the second bending portion close to the second connecting portion, and the second bending portion and the second connecting portion are transitionally connected via the second arc-shaped portion.

[0013] Furthermore, the upper die assembly includes an upper die seat, and the upper end of the bending punch is connected to the upper die seat.

[0014] Furthermore, the mother mold is provided with a punch head placed in the first groove, and the lower end of the bending punch is provided with a second groove for pressing with the punch head.

[0015] The beneficial effects of the utility model: the bending stamping die of the utility model has a simple structure, is easy to use, is convenient for stripping, and improves production efficiency. The bending punch moves downward under the action of external force until it is inserted into the first groove, and the outer wall of the stripping block abuts against the outer wall of the bending punch. The side of the sheet to be bent is folded from the first bending part to the bending punch by the punching pressure of the bending punch. The bending punch and the mother mold are pressed together to bend the sheet into a stamping part. When stripping, the folded edge of the stamping part will be blocked by the stripping block and detach from the bending punch to form a stripping state. Compared with the prior art, the bending stamping die of the utility model adds a connector with a stripping function, which is convenient for stripping production. At the same time, the connector is directly connected to the lower die seat, and there is no need to add a stripping structure inside the die. The structure is simple and easy to assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the bending stamping die;

[0017] Figure 2 It is a partial cross-sectional view of the bending stamping die;

[0018] Figure 3 It is a schematic diagram of the decomposed structure of the bending stamping die;

[0019] Figure 4 It is a three-dimensional structural schematic diagram of the lower mold assembly;

[0020] Figure 5 It is a schematic diagram of the partial exploded structure of the lower mold assembly;

[0021] Figure 6 Schematic diagram of the sheet material structure.

[0022] Reference numerals include:

[0023] 1. Connecting piece; 11. Stripping block; 12. Positioning block; 2. Upper die seat; 3. Bending punch; 31. Second profile groove; 4. Mother die; 41. First profile groove; 42. Punching head; 5. Lower die seat; 6. First bending portion; 61. First accommodating groove; 62. First arc-shaped portion; 7. First connecting portion; 71. First arc groove; 8. Second bending portion; 81. Second accommodating groove; 82. Second arc-shaped portion; 9. Second connecting portion; 91. Second arc groove; 10. Stamping piece; 101. Sheet material. DETAILED DESCRIPTION

[0024] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with embodiments and drawings. The contents mentioned in the implementation modes are not intended to limit the present invention.

[0025] like Figure 1-6As shown, a bending stamping die comprises a connecting member 1, an upper die assembly and a lower die assembly arranged at the lower end of the upper die assembly, the upper die assembly comprises a bending punch 3, the lower die assembly comprises a mother die 4 and a lower die seat 5 connected to the lower end of the mother die 4, the lower end of the connecting member 1 is connected to the lower die seat 5, a first bending portion 6 is arranged between the connecting member 1 and the mother die 4, a first groove 41 is arranged at the upper end of the mother die 4, the bending punch 3 is plugged into the first groove 41 and is used to bend a sheet material 101 into a stamping part 10, the first bending The upper end of the part 6 is provided with a first receiving groove 61 connected to the first groove 41, and the first receiving groove 61 is used to place the side of the sheet material 101 to be bent. One end of the connecting member 1 passes through the first receiving groove 61 and extends to the first groove 41 with a stripping block 11, and the stripping block 11 is used to abut against the side wall of the bending punch 3. A gap is left between the lower end of the stripping block 11 and the upper end of the first bending part 6, and the gap is used to leave enough space for the side of the sheet material 101 to be bent to the first groove 41 through the first receiving groove 61.

[0026] The bending and stamping die of the utility model has a simple structure, is easy to use, is convenient for stripping, and improves production efficiency. When in use, the sheet material 101 is placed in the first groove 41 of the mother mold 4, wherein the side of the sheet material 101 to be bent is placed in the first accommodating groove 61, and an external force is applied to the upper mold assembly. Under the action of the external force, the upper mold assembly and the bending punch 3 move downward until the bending punch 3 is inserted into the first groove 41, and the outer wall of the stripping block 11 abuts against the outer wall of the bending punch 3. The side of the sheet material 101 to be bent is folded from the first bending portion 6 toward the bending punch 3 by the punching pressure of the bending punch 3. The inner wall of the material 101 extends outward along the outer wall of the bending punch 3, and the outer wall of the sheet material 101 extends outward along the inner wall of the first groove 41. The bending punch 3 and the mother mold 4 are pressed together to bend the sheet material 101 into a stamping part 10, and the stamping is completed; then the upper mold assembly is acted upon by an external force and moves upward with the bending punch 3. At this time, the folded edge of the stamping part 10 is stuck outside the bending punch 3, and the stamping part 10 also moves upward with the bending punch 3. However, since the stripping block 11 abuts against the outer wall of the bending punch 3, the folded edge of the stamping part 10 will be blocked by the stripping block 11 and detach from the bending punch 3 to form a stripping state. Compared with the prior art, the bending stamping die of the utility model adds a connector 1 with a stripping function, which is convenient for stripping production. At the same time, the connector 1 is directly connected to the lower die base 5, and there is no need to add a stripping structure inside the die. The structure is simple and easy to assemble.

[0027] Furthermore, the connector 1 has a positioning block 12 extending toward the first bending portion 6, the upper end of the positioning block 12 is connected to the lower end of the stripping block 11, the lower end of the positioning block 12 is placed in the first accommodating groove 61, the side wall of the positioning block 12 is used to abut against the side edge of the sheet material 101 to be bent, that is, in addition to the positioning block 12, a certain space is reserved in the first accommodating groove 61 for placing the side edge of the sheet material 101 to be bent, the side wall of the positioning block 12 abuts against the side edge of the sheet material 101 to be bent, the space is the space between the positioning block 12 and the mother mold 4, the distance between the positioning block 12 and the mother mold 4 can be adjusted according to the size of the folded edge, that is, the size of the folded edge is adjusted, so as to facilitate the bending punch 3 to locate the position of the sheet material 101 that needs to be punched, so as to limit the size of the folded edge of the sheet material 101. The connector 1 has both the function of stripping and the function of positioning, and is highly functional.

[0028] Furthermore, a first connecting portion 7 is provided between the mother mold 4 and the first bending portion 6. The first connecting portion 7 is provided with a first arc groove 71 connected to the first groove 41 at one end close to the mother mold 4. The first arc groove 71 is used for placing the bent side of the stamping part 10. The stripping block 11 is located above the first arc groove 71, that is, the stripping block 11 extends from one end of the connecting part 1 through the first accommodating groove 61 to the first arc groove 71. Specifically, the bending punch 3 moves downward under the action of external force and is directly inserted into the first groove 41. The outer wall of the stripping block 11 abuts against the outer wall of the bending punch 3. The side of the sheet 101 to be bent slides from the first accommodating groove 61 to the first arc groove 71 under the punching force of the bending punch 3. The inner wall of the sheet 101 extends outward along the outer wall of the bending punch 3. The outer wall of the sheet 101 extends outward along the inner wall of the first arc groove 71. The bending punch 3 and the mother mold 4 are pressed together to bend the sheet 101 into a stamping part 10. The side of the stamping part 10 that has been bent and formed is placed in the first arc groove 71. The stripping block 11 is used to strip the folded edge of the stamping part 10 located in the first arc groove 71. The first arc groove 71 is used for placing the side of the stamping part 10 that has been bent and formed, so that the stripping block 11 can strip the folded edge stuck in the bending punch 3. The structure is simple.

[0029] Furthermore, the first bending portion 6 has a first arc-shaped portion 62 protruding from one end close to the first connecting portion 7, and the first bending portion 6 is transitionally connected to the first connecting portion 7 through the first arc-shaped portion 62. Specifically, the side edge of the sheet material 101 to be bent is subjected to the punching force of the bending punch 3 and smoothly slides from the first accommodating groove 61 to the first arc-shaped portion 62 into the first arc groove 71. The first arc-shaped portion 62 can increase the sliding speed of the sheet material 101, thereby improving the punching efficiency. In this embodiment, the longitudinal section of the first arc-shaped portion 62 is arranged in an arc shape.

[0030] Furthermore, the female mold 4 is provided with a second bending portion 8 at one end away from the first bending portion 6, and a second receiving groove 81 connected to the first groove 41 is provided at the upper end of the second bending portion 8, and the second receiving groove 81 is used for placing the side edge of the sheet material 101 to be bent. In this embodiment, one end of the sheet material 101 is placed in the first receiving groove 61 and abuts against the side wall of the positioning block 12, and the other end of the sheet material 101 is placed in the second receiving groove 81, and the middle of the sheet material 101 is located above the first groove 41, that is, the sheet material 101 needs to fold a group of opposite side surfaces, and under the action of external force, the bending punch 3 moves downward until it is inserted into the first groove 41, and one end of the sheet material 101 is folded from the first bending portion 6 toward the bending punch 3, and the other end of the sheet material 101 is folded. The end is folded from the second bending portion 8 toward the bending punch 3, the inner walls at both ends of the sheet 101 extend outward along the outer walls of the bending punch 3 respectively, and the outer walls at both ends of the sheet 101 extend outward along the inner walls of the first groove 41 respectively. The bending punch 3 and the mother mold 4 are pressed together to bend the sheet 101 into a stamping part 10. The stamping part 10 has a group of relative folding edges and a simple structure. According to the number of folding edges of the sheet 101 required, a corresponding second bending portion 8 can be set on the surrounding side of the mother mold 4, and the use range is wide.

[0031] Furthermore, a second connecting portion 9 is provided between the mother mold 4 and the second bending portion 8. The second connecting portion 9 is provided with a second arc groove 91 connected to the first groove 41 at one end close to the mother mold 4. The second arc groove 91 is used to place the side edge of the stamping part 10 that has been bent. Specifically, the side edge of the sheet material 101 to be bent is subjected to the punching force of the bending punch 3 and smoothly slides from the second accommodating groove 81 and through the second arc portion 82 into the second arc groove 91. The second arc portion 82 can increase the sliding speed of the sheet material 101, thereby improving the stamping efficiency. In this embodiment, the longitudinal section of the second arc portion 82 is arranged in an arc shape.

[0032] Furthermore, the upper die assembly includes an upper die base 2, and the upper end of the bending punch 3 is connected to the upper die base 2, and the structure is simple.

[0033] Furthermore, the female mold 4 is provided with a punch head 42 placed in the first groove 41, and the lower end of the bending punch 3 is provided with a second groove 31 for pressing with the punch head 42. In the present embodiment, the sheet material 101 is a sheet material with a rectangular cross section and V-shaped notches on both sides, and the stamping part 10 is a product with a W-shaped longitudinal section and hemmed edges on both sides. Specifically, the two ends of the sheet material 101 with the V-shaped notch are respectively placed in the first accommodating groove 61 and the second accommodating groove 81, one end of which abuts against the outer wall of the positioning block 12, and the middle part of the sheet material 101 is placed above the first groove 41. Under the action of external force, the bending punch 3 moves downward until it is inserted into the first groove 41, and at the same time, the punch head 42 of the female mold 4 is pressed with the second groove 31 of the bending punch 3. The female mold 4 and the bending punch 3 press the sheet material 101 into a stamping part 10 with a W-shaped longitudinal section. At the same time, Under the joint action of the bending portion 6 and the second bending portion 8, the side edges of the sheet material 101 at both ends are bent to form the edging on both sides of the stamping part 10. In this process, the positioning block 12 of the connecting member 1 plays a role in positioning the side edges to be bent when the sheet material 101 is placed in the first groove 41, thereby limiting the size of the folding edge of the stamping part 10. The stripping block 11 of the connecting member 1 plays a role in stripping the folding edge stuck in the bending punch 3 after the stamping of the stamping part 10 is completed. It has a simple structure, strong functionality, and improves the stamping efficiency.

[0034] The above contents are only preferred embodiments of the present invention. For ordinary technicians in this field, according to the concept of the present invention, there will be changes in the specific implementation methods and application scopes. The contents of this specification should not be understood as limiting the present invention.

Claims

1. A bending stamping die, characterized in that: The invention comprises a connecting member (1), an upper die assembly and a lower die assembly arranged at the lower end of the upper die assembly, wherein the upper die assembly comprises a bending punch (3), and the lower die assembly comprises a mother die (4) and a lower die seat (5) connected to the lower end of the mother die (4). The lower end of the connecting member (1) is connected to the lower die seat (5), a first bending portion (6) is arranged between the connecting member (1) and the mother die (4), a first groove (41) is arranged at the upper end of the mother die (4), and the bending punch (3) and the first groove (41) are connected to each other. 41) is plugged in and used to bend the sheet material (101) into a stamping part (10), the upper end of the first bending portion (6) is provided with a first receiving groove (61) connected to the first groove (41), the first receiving groove (61) is used to place the side of the sheet material (101) to be bent, one end of the connecting member (1) passes through the first receiving groove (61) and extends toward the first groove (41) to form a stripping block (11), the stripping block (11) is used to abut against the side wall of the bending punch (3).

2. The bending stamping die according to claim 1, characterized in that: The connecting member (1) is provided with a positioning block (12) extending toward the first bending portion (6); the upper end of the positioning block (12) is connected to the lower end of the stripping block (11); the lower end of the positioning block (12) is arranged in the first receiving groove (61); and the side wall of the positioning block (12) is used to abut against the side edge of the sheet material (101) to be bent.

3. The bending stamping die according to claim 1, characterized in that: A first connecting portion (7) is provided between the mother mold (4) and the first bending portion (6); a first arc groove (71) connected to the first groove (41) is provided at one end of the first connecting portion (7) close to the mother mold (4); the first arc groove (71) is used for placing the bent side of the stamping part (10); and the stripping block (11) is located above the first arc groove (71).

4. The bending stamping die according to claim 3, characterized in that: A first arc-shaped portion (62) protrudes from one end of the first bending portion (6) close to the first connecting portion (7), and the first bending portion (6) and the first connecting portion (7) are transitionally connected via the first arc-shaped portion (62).

5. The bending stamping die according to claim 1, characterized in that: A second bending portion (8) is provided at one end of the female mold (4) away from the first bending portion (6); a second receiving groove (81) connected to the first groove (41) is provided at the upper end of the second bending portion (8); the second receiving groove (81) is used for placing the side edge of the sheet material (101) to be bent.

6. The bending stamping die according to claim 5, characterized in that: A second connecting portion (9) is provided between the mother mold (4) and the second bending portion (8); a second arc groove (91) connected to the first groove (41) is provided at one end of the second connecting portion (9) close to the mother mold (4); the second arc groove (91) is used for placing the side edge of the stamping part (10) that has been bent into shape.

7. The bending stamping die according to claim 6, characterized in that: A second arc-shaped portion (82) protrudes from one end of the second bending portion (8) close to the second connecting portion (9), and the second bending portion (8) and the second connecting portion (9) are transitionally connected via the second arc-shaped portion (82).

8. The bending stamping die according to claim 1, characterized in that: The upper die assembly comprises an upper die seat (2), and the upper end of the bending punch (3) is connected to the upper die seat (2).

9. The bending stamping die according to claim 1, characterized in that: The female mold (4) is provided with a punch head (42) placed in a first groove (41), and the lower end of the bending punch (3) is provided with a second groove (31) for pressing with the punch head (42).

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