A type of irregularly shaped finger bending fixture

Abstract

This utility model discloses a bending fixture for irregularly shaped tentacles, belonging to the field of tentacle bending and forming technology. The bending fixture includes a male mold and a female mold, both adapted to the shape of the irregularly shaped tentacles. The male mold is used to place the raw material, and the female mold can slide relative to the male mold to bend the raw material into irregularly shaped tentacles. The male mold includes a first mold and a second mold, the second mold being slidable relative to the first mold. The second mold has a first state and a second state. When the second mold is in the first state, the forming surface of the second mold is connected to the forming surface of the first mold; when the second mold is in the second state, the forming surface of the second mold is separated from the forming surface of the first mold. This utility model allows the second mold to slide between the first and second states. When the female mold is pressed to a specific position, the second mold switches from the first state to the second state, making room for the female mold and avoiding structural interference between the female mold and the second mold caused by the inclined arc transition section.

Description

Technical Field

[0001] This utility model belongs to the field of finger bending forming technology, and in particular relates to a tooling for bending irregularly shaped fingers. Background Technology

[0002] As a key component in precision devices such as electronic connectors and relays, irregularly shaped contact fingers have complex geometries. When manufacturing irregularly shaped contact fingers with specific complex shapes (first straight section, inclined arc transition section, second straight section), traditional bending methods and tooling have problems with efficiency, accuracy, forming effect and demolding difficulties.

[0003] The irregularly shaped finger consists of three characteristic segments: a first straight segment, an inclined arc transition segment, and a second straight segment. The inclined arc transition segment, in particular, makes it impossible to complete by a simple single right-angle bend or a standard arc bend. The inclination angle of the arc transition segment increases the molding difficulty and requires the mold to have a specific matching angle.

[0004] Most existing bending fixtures are integrally stamped. When using integral stamping for bending, interference will occur between the male and female molds due to the inclined arc transition section, making it impossible to bend and form.

[0005] Therefore, there is an urgent need to design a bending fixture for irregularly shaped fingers to solve the problems mentioned above. Utility Model Content

[0006] The purpose of this invention is to provide a bending fixture for irregularly shaped fingers, which has the advantage that the male and female dies will not interfere with each other when stamping and bending irregularly shaped fingers, thus solving the problems mentioned in the background art.

[0007] To achieve the above objectives, the specific technical solution of this utility model for bending irregularly shaped fingers is as follows:

[0008] A bending fixture for irregularly shaped tentacles, the irregularly shaped tentacles include a first straight section, an inclined arc-shaped transition section and a second straight section, the first straight section and the arc-shaped transition section are fixedly connected, and the end of the arc-shaped transition section away from the first straight section is fixedly connected to the second straight section. It includes a male mold and a female mold, the male mold and the female mold are adapted to the shape of the irregularly shaped tentacles, the male mold is used to place the raw material, and the female mold can slide relative to the male mold to bend the raw material into irregularly shaped tentacles;

[0009] The public mold includes a first mold and a second mold. The second mold can slide relative to the first mold. The second mold has a first state and a second state.

[0010] When the second mold is in the first state, the molding surface of the second mold is connected to the molding surface of the first mold;

[0011] When the second mold is in the second state, the molding surface of the second mold is separated from the molding surface of the first mold.

[0012] Furthermore, when the master mold slides to the first position along the third direction, the second mold slides in the first direction, and the second mold changes from the first state to the second state. When the master mold slides to the second position along the third direction, the master mold slides in the fourth direction. When the master mold slides to the third position along the fourth direction, the second mold slides in the second direction to reset, and the second mold changes from the second state to the first state.

[0013] Furthermore, the third direction is vertical, the fourth direction is inclined, and the inclination angle of the fourth direction is the same as the inclination angle of the arc transition section.

[0014] Furthermore, the first mold includes an arc-shaped portion and a second straight portion, with the arc-shaped portion connected to the second straight portion. After the irregularly shaped finger is bent and formed, the arc-shaped portion and the second straight portion correspond to the arc-shaped transition section and the second straight section of the irregularly shaped finger.

[0015] Furthermore, the second mold includes a first straight portion. When the second mold is in the first state, the first straight portion is connected to the arc-shaped portion. After the irregularly shaped finger is bent and formed, the first straight portion corresponds to the first straight section of the irregularly shaped finger.

[0016] Furthermore, the forming surface of the master mold includes a first flat surface, an arc-shaped surface, and a second flat surface. The first flat surface is connected to the arc-shaped surface, and the end of the arc-shaped surface away from the first flat surface is connected to the second flat surface. The first flat surface and the first flat portion bend the first flat segment into shape, the arc-shaped surface and the arc-shaped portion bend the arc-shaped transition segment into shape, and the second flat surface and the second flat portion bend the second flat segment into shape.

[0017] Furthermore, when the distance between the head of the master mold and the second straight section is the same as the thickness of the irregularly shaped finger, the master mold slides to the first position along a third direction.

[0018] Furthermore, the first position is when the head of the female mold is located inside the first mold and the arc-shaped surface of the female mold does not interfere with the second mold.

[0019] Furthermore, the second position is defined as the distance between the end of the arc-shaped surface near the first flat surface and the end of the arc-shaped portion near the second flat surface being equal to the thickness of the irregularly shaped finger.

[0020] Furthermore, the third position is defined as the distance between the arcuate surface and the arcuate portion, and the distance between the second straight surface and the second straight portion, being the same as the thickness of the irregularly shaped finger.

[0021] The present invention has the following advantages: the second mold can slide between the first state and the second state. When the master mold is stamped to a specific position, the second mold switches from the first state to the second state, making room for the master mold and avoiding structural interference between the master mold and the second mold caused by the inclined arc transition section. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the bending fixture of this utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the public mold of this utility model;

[0024] Figure 3 This is a schematic diagram of the structure of the master mold of this utility model;

[0025] Figure 4 This is a schematic diagram of the irregularly shaped finger of this utility model;

[0026] Figure 5 This is a schematic diagram of the structure of the master mold of this utility model when it is in the first position;

[0027] Figure 6 This is a schematic diagram of the structure of the master mold of this utility model when it is in the second position;

[0028] Figure 7 This is a schematic diagram of the structure of the master mold of this utility model when it is in the third position;

[0029] The markings in the diagram are as follows: 1. Irregularly shaped finger; 11. First straight section; 12. Arc-shaped transition section; 13. Second straight section; 2. Male mold; 21. First mold; 211. Arc-shaped part; 212. Second straight part; 22. Second mold; 221. First straight part; 23. Placement part; 24. Auxiliary part; 3. Female mold; 31. First straight surface; 32. Arc-shaped surface; 33. Second straight surface. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0031] Those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of this invention and form different embodiments. For example, in the claims, any of the claimed embodiments can be used in any combination.

[0032] The following is a reference to the appendix. Figure 1 To be continued Figure 7 This invention describes a bending fixture for irregularly shaped fingers.

[0033] The irregularly shaped finger 1 includes a first straight section 11, an inclined arc-shaped transition section 12, and a second straight section 13. The first straight section 11 is fixedly connected to the arc-shaped transition section 12, and the end of the arc-shaped transition section 12 away from the first straight section 11 is fixedly connected to the second straight section 13. Specifically, the angle between the first straight section 11 and the arc-shaped transition section 12 is 153 degrees, and the angle between the second straight section 13 and the arc-shaped transition section 12 is 158 degrees. The arc-shaped transition section 12 includes a first inclined edge, an arc-shaped edge, and a second inclined edge. One end of the first inclined edge is connected to the arc-shaped edge, and the end of the first inclined edge away from the arc-shaped edge is connected to the first straight section 11. The second inclined edge is connected to the end of the arc-shaped edge away from the first inclined edge, and the end of the second inclined edge away from the arc-shaped edge is connected to the second straight section 13. The diameter of the arc-shaped edge is 18.5 mm.

[0034] Most existing bending fixtures are integrally stamped. When bending using integral stamping, interference will occur between the male mold 2 and the female mold 3 due to the inclined arc transition section 12, making bending impossible.

[0035] Therefore, this irregularly shaped finger bending fixture includes a male mold 2 and a female mold 3. The male mold 2 and the female mold 3 are adapted to the shape of the irregularly shaped finger 1. The male mold 2 is used to place the raw material, and the female mold 3 can slide relative to the male mold 2 to bend the raw material into the irregularly shaped finger 1. Specifically, the female mold 3 is connected to a punch press, and the output end of the punch press drives the female mold 3 to slide up and down. The male mold 2 includes a first mold 21 and a second mold 22. The second mold 22 can slide relative to the first mold 21. The second mold 22 has a first state and a second state.

[0036] When the second mold 22 is in the first state, the molding surface of the second mold 22 is connected to the molding surface of the first mold 21;

[0037] When the second mold 22 is in the second state, the molding surface of the second mold 22 is separated from the molding surface of the first mold 21.

[0038] When the female mold 3 presses against the male mold 2, the female mold 3 and the second mold 22 will interfere due to the inclined arc transition section 12. By setting the second mold 22 to slide relative to the first mold 21, the female mold 3 will not interfere with the second mold 22 when the female mold 3 presses against the male mold 2.

[0039] Preferably, a hydraulic cylinder is provided on the second mold 22. The fixed end of the hydraulic cylinder is connected to the first mold 21, and the output end of the hydraulic cylinder is connected to the second mold 22. Thus, the second mold 22 is switched between the first state and the second state by the extension and retraction of the output end of the hydraulic cylinder.

[0040] The first mold 21 includes an arc-shaped portion 211 and a second straight portion 212. The arc-shaped portion 211 is connected to the second straight portion 212. After the irregularly shaped finger 1 is bent and formed, the arc-shaped portion 211 and the second straight portion 212 correspond to the arc-shaped transition section 12 and the second straight section 13 of the irregularly shaped finger 1. The second mold 22 includes a first straight portion 221. When the second mold 22 is in the first state, the first straight portion 221 is connected to the arc-shaped portion 211. After the irregularly shaped finger 1 is bent and formed, the first straight portion 221 corresponds to the first straight section 11 of the irregularly shaped finger 1.

[0041] Specifically, the forming surfaces of the master mold 3 include a first flat surface 31, an arc-shaped surface 32, and a second flat surface 33. The first flat surface 31 is connected to the arc-shaped surface 32, and the end of the arc-shaped surface 32 away from the first flat surface 31 is connected to the second flat surface 33. The first flat surface 31 and the first flat portion 221 bend the first flat segment 11 into shape, the arc-shaped surface 32 and the arc-shaped portion 211 bend the arc-shaped transition segment 12 into shape, and the second flat surface 33 and the second flat portion 212 bend the second flat segment 13 into shape.

[0042] When the distance between the head of the female mold 3 and the second straight section 13 is the same as the thickness of the irregular finger 1, the female mold 3 slides to the first position along the third direction C.

[0043] When the master mold 3 slides to the first position along the third direction C, the second mold 22 slides to the first direction A. The second mold 22 changes from the first state to the second state, avoiding interference between the master mold 3 and the second mold 22. At the same time, before the master mold 3 slides to the first position along the third direction C, the second mold 22 is in the first state, so that the material is pre-bent by the second mold 22, avoiding deformation of the material into other shapes.

[0044] Specifically, the first position is when the head of the female mold 3 is located inside the first mold 21 and the arc surface 32 of the female mold 3 does not interfere with the second mold 22. Preferably, the first position is when the head of the female mold 3 is located inside the first mold 21 and the distance between the arc surface 32 of the female mold 3 and the second mold 22 is the same as the thickness of the irregular finger 1.

[0045] Subsequently, the female mold 3 slides from the first position to the second position along the third direction C. When the female mold 3 slides to the second position, the female mold 3 slides along the fourth direction D, that is, the female mold 3 tilts and slides at this time.

[0046] The second position is when the distance between the end of the arc-shaped surface 32 near the first flat surface 31 and the end of the arc-shaped portion 211 near the second flat portion 212 is the same as the thickness of the irregularly shaped finger 1.

[0047] Subsequently, the master mold 3 slides from the second position to the third position along the fourth direction D. When the master mold 3 slides to the third position, the second mold 22 slides to reset in the second direction B, and the second mold 22 changes from the second state to the first state.

[0048] The third position is when the distance between the arc-shaped surface 32 and the arc-shaped portion 211 and the distance between the second straight surface 33 and the second straight portion 212 are the same as the thickness of the irregularly shaped finger 1.

[0049] Specifically, the first direction A is the direction in which the second mold 22 moves away from the first mold 21, the second direction B is the direction in which the second mold 22 moves closer to the first mold 21, the third direction C is the direction in which the second mold 22 moves vertically closer to the common mold 2, and the fourth direction D is the tilting direction, and the tilting angle of the fourth direction D is the same as the tilting angle of the arc transition section 12.

[0050] A placement part 23 is provided on the male mold 2. The length of the placement part 23 is the same as the length of the raw material. The raw material is placed through the placement part 23, and the raw material is also limited. Specifically, one end of the placement part 23 is located on the first mold 21, and the other end of the placement part 23 is located on the second mold 22.

[0051] Auxiliary parts 24 are provided on both the first mold 21 and the second mold 22. The auxiliary parts 24 are inclined. The auxiliary part 24 of the first mold 21 is connected to the placement part 23 of the first mold 21. The end of the auxiliary part 24 of the first mold 21 away from the placement part 23 of the first mold 21 is connected to the first straight part 221. The auxiliary part 24 of the second mold 22 is connected to the placement part 23 of the second mold 22. The end of the auxiliary part 24 of the second mold 22 away from the placement part 23 of the second mold 22 is connected to the second straight part 212. By providing the auxiliary parts 24, the raw material is buffered when stamping the irregularly shaped finger 1, so as to avoid the raw material from breaking or undergoing other deformations.

[0052] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A special-shaped contact finger bending tool, the special-shaped contact finger (1) comprising a first flat section (11), an arc-shaped transition section (12) arranged obliquely, and a second flat section (13), the first flat section (11) being fixedly connected with the arc-shaped transition section (12), and the end of the arc-shaped transition section (12) away from the first flat section (11) being fixedly connected with the second flat section (13), characterized in that, It includes a male mold (2) and a female mold (3), which are adapted to the shape of the irregular finger (1). The male mold (2) is used to place the raw material, and the female mold (3) can slide relative to the male mold (2) to bend the raw material into the irregular finger (1). The public mold (2) includes a first mold (21) and a second mold (22), the second mold (22) can slide relative to the first mold (21), and the second mold (22) has a first state and a second state; When the second mold (22) is in the first state, the molding surface of the second mold (22) is connected to the molding surface of the first mold (21); When the second mold (22) is in the second state, the molding surface of the second mold (22) is separated from the molding surface of the first mold (21).

2. The irregularly shaped finger folding tool according to claim 1, wherein, When the master mold (3) slides to the first position along the third direction, the second mold (22) slides in the first direction and changes from the first state to the second state. When the master mold (3) slides to the second position along the third direction, the master mold (3) slides in the fourth direction. When the master mold (3) slides to the third position along the fourth direction, the second mold (22) slides to the second direction to reset and changes from the second state to the first state.

3. The irregularly shaped finger folding tool of claim 2, wherein, The third direction is a vertical direction, the fourth direction is an inclined direction, and the inclination angle of the fourth direction is the same as the inclination angle of the arc transition section (12).

4. The irregularly shaped finger folding tool of claim 2, wherein, The first mold (21) includes an arc-shaped part (211) and a second straight part (212). The arc-shaped part (211) is connected to the second straight part (212). After the irregular finger (1) is bent and formed, the arc-shaped part (211) and the second straight part (212) correspond to the arc-shaped transition section (12) and the second straight section (13) of the irregular finger (1).

5. The irregularly shaped finger bending fixture according to claim 4, characterized in that, The second mold (22) includes a first straight part (221). When the second mold (22) is in the first state, the first straight part (221) is connected to the arc-shaped part (211). After the irregular finger (1) is bent and formed, the first straight part (221) corresponds to the first straight section (11) of the irregular finger (1).

6. The irregularly shaped finger bending fixture according to claim 5, characterized in that, The forming surface of the master mold (3) includes a first flat surface (31), an arc surface (32), and a second flat surface (33). The first flat surface (31) is connected to the arc surface (32). The end of the arc surface (32) away from the first flat surface (31) is connected to the second flat surface (33). The first flat surface (31) and the first flat part (221) bend the first flat section (11) into shape. The arc surface (32) and the arc part (211) bend the arc transition section (12) into shape. The second flat surface (33) and the second flat part (212) bend the second flat section (13) into shape.

7. The irregularly shaped finger bending fixture according to claim 5, characterized in that, When the distance between the head of the female mold (3) and the second straight section (13) is the same as the thickness of the irregular finger (1), the female mold (3) slides to the first position along the third direction.

8. The irregularly shaped finger bending fixture according to claim 6, characterized in that, The first position is when the head of the mother mold (3) is located inside the first mold (21) and the arc surface (32) of the mother mold (3) does not interfere with the second mold (22).

9. The irregularly shaped finger bending fixture according to claim 6, characterized in that, The second position is when the distance between the end of the arc-shaped surface (32) near the first flat surface (31) and the end of the arc-shaped part (211) near the second flat part (212) is the same as the thickness of the irregular finger (1).

10. The irregularly shaped finger bending fixture according to claim 6, characterized in that, The third position is when the distance between the arc-shaped surface (32) and the arc-shaped portion (211) and the distance between the second flat surface (33) and the second flat portion (212) are the same as the thickness of the irregular finger (1).

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