Arc bending die for multi-PIN product

Abstract

The utility model relates to a multi-PIN product arc bending die which comprises an upper die set and a lower die set which correspond to each other up and down, the upper die set comprises an upper die base, an upper padding plate is arranged at the bottom of the upper die base, an upper clamping plate is arranged at the bottom of the upper padding plate, a stopping plate capable of moving up and down is connected to the bottom of the upper clamping plate, and an upper stripping plate is arranged at the bottom of the stopping plate; the lower die set comprises a lower die base, a lower base plate is arranged at the top of the lower die base, a lower die plate is arranged at the top of the lower base plate, a punch is arranged in the upper die set, a forming insert core is arranged in the lower die set, and the punch corresponds to the forming insert core up and down. The upper end of the punch is fixed in the upper clamping plate, and the lower end penetrates through the stopping plate and the upper stripping plate; and the forming insert core is fixedly arranged in the lower template. The arc bending die for the multi-PIN product is simple in structure, the bending precision during edge rolling of the multi-PIN product can be guaranteed, the multi-PIN product is not prone to rebounding after being subjected to arc bending, and the machining efficiency of edge rolling of the multi-PIN product and the machining quality of the product are improved.

Description

Technical Field

[0001] The utility model relates to a multi-PIN product arc bending technology, in particular to a multi-PIN product arc bending die. Background Art

[0002] Some existing multi-PIN products need to bend their PIN pins into a rounded shape with an arc-shaped cross section according to the requirements of use. Since multi-PIN products are mostly ultra-thin metal sheet structures, as shown in the attached manual, Figure 6 and 7 The multi-PIN product shown has a thickness of 0.1mm and needs to be processed into the following shape: Figure 8 and Figure 9 The rolled structure shape is shown in the figure; however, the arc rebound coefficient of the existing multi-PIN product arc bending mold after the product is rolled is large, and the product quality is not high, which affects the processing progress of the multi-PIN product arc bending, and further affects the product processing efficiency and delays the product delivery time. Summary of the Invention

[0003] The technical problem to be solved by the utility model is to provide a PIN product arc bending die which has a simple structure and can improve processing efficiency.

[0004] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0005] A multi-PIN product arc bending mold, comprising an upper mold group and a lower mold group corresponding to each other, the upper mold group comprising an upper mold base, the bottom of the upper mold base is provided with an upper pad fixedly connected to it, the bottom of the upper pad is provided with an upper clamping plate fixedly connected to it, the bottom of the upper clamping plate is connected to a stop plate that can move up and down, and the bottom of the stop plate is provided with an upper stripping plate fixedly connected to it; the lower mold group comprises a lower mold base, the top of the lower mold base is provided with a lower pad fixedly connected to it, the top of the lower pad is provided with a lower template fixedly connected to it, the upper stripping plate corresponds to the lower template up and down, a punch is provided in the upper mold group, and a forming insert is provided in the lower mold group, and the punch corresponds to the forming insert up and down; the upper end of the punch is fixed in the upper clamping plate, and the lower end passes through the stop plate and the upper stripping plate; the forming insert is fixedly provided in the lower template.

[0006] Furthermore, the punch is composed of a punch rod and a forming head, which are formed as one piece. The cross-section of the forming head is a vertical oblong structure, which is offset to the part near the outside of the bottom of the punch rod. A concave transition part is formed between the inner side surface of the forming head and the bottom of the punch rod, and the outer side surface protrudes on the outside of the punch rod; the top of the forming insert has a concave groove, and the groove cooperates with the forming head up and down. The top part of the forming insert located on one side of the groove and corresponding to the transition part is higher than the height of the top part relative to the other side of the groove.

[0007] Furthermore, punching holes communicating with each other up and down are provided in the stop plate and the upper stripping plate, and the punch is inserted into the punching holes and the punch is slidably matched with the punching holes up and down.

[0008] Furthermore, an embedding groove communicating with each other up and down is provided in the lower template, and the molding insert is embedded in the embedding groove.

[0009] Furthermore, the stop plate is movably connected to the upper clamping plate through equal height screws.

[0010] Furthermore, a connecting hole communicating with each other up and down is provided in the upper splint, and the connecting hole is in a "T" shape. The contour screw is provided in the connecting hole and the lower end passes through the bottom of the connecting hole and is fixedly connected to the stop plate.

[0011] Furthermore, a spring fixedly connected to the upper die base is provided in the upper die base, and the spring is a nitrogen spring, the lower end of which passes downward through the upper pad and the upper clamping plate and extends below the upper clamping plate to correspond to the top of the stop plate above and below.

[0012] Furthermore, the upper pad and the upper clamping plate are provided with connecting holes which correspond to each other and are connected to each other, and the spring is passed through the connecting holes.

[0013] Compared with the existing technology, the advantages of the present invention are: the arc bending mold structure of the multi-PIN product is simple, the special structure of the punch and forming insert can ensure the bending accuracy of the multi-PIN product when it is rolled, and the multi-PIN product is not easy to rebound after arc bending, which improves the processing efficiency and product processing quality of the multi-PIN product. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0015] Figure 1 This is a schematic structural diagram of a multi-PIN product arc bending mold in the mold opening state of the utility model;

[0016] Figure 2 This is a schematic structural diagram of a multi-PIN product arc bending mold in a closed mold state;

[0017] Figure 3 This is a schematic diagram of the structure of the punch and the forming insert in the present invention when the die is opened;

[0018] Figure 4 yes Figure 3 A magnified view of the structure of middle A;

[0019] Figure 5 This is a schematic diagram of the structure of the punch and the forming insert in the closed mold state of the utility model;

[0020] Figure 6 This is a schematic diagram of the top view of the multi-PIN product before stamping in the utility model;

[0021] Figure 7 This is a schematic diagram of the side structure of the multi-PIN product before stamping in the utility model;

[0022] Figure 8 This is a schematic diagram of the top view of the multi-PIN product after stamping in the utility model;

[0023] Figure 9 It is a schematic diagram of the side structure of the multi-PIN product after stamping in the utility model.

[0024] In the figure: 1. Upper die assembly; 11. Upper die base; 12. Upper pad; 13. Upper clamping plate; 131. Connecting hole; 14. Stop plate; 15. Upper stripper plate; 16. Punch; 161. Punch rod; 162. Forming head; 163. Transition part; 17. Spring; 18. Punch hole; 19. Contour screw; 2. Lower die assembly; 21. Lower die base; 22. Lower pad; 23. Lower template; 231. Embedded groove; 24. Forming insert; 241. Forming groove; 3. Punch material; 31. Curled part. DETAILED DESCRIPTION

[0025] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without inventive effort are within the scope of protection of the present invention. It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings. In the description of the embodiments of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," etc., indicating an orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present invention is typically placed when in use. They are merely for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed or operate in a specific orientation. Therefore, they should not be understood as limiting the present invention. Furthermore, the terms “first”, “second”, etc. are merely used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0027] Furthermore, the use of terms such as "horizontal" and "vertical" does not necessarily imply that the component must be absolutely horizontal or vertical, but rather that it can be slightly tilted. For example, "horizontal" simply refers to a direction that is more horizontal than "vertical," not that the structure or component must be perfectly horizontal, but rather that it can be slightly tilted.

[0028] In the description of the embodiments of the present invention, “a plurality of” means at least 2.

[0029] In the description of the embodiments of the present invention, it should be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0030] Example

[0031] Please refer to the instruction manual Figure 1 and 2 As shown in the instruction manual, Figure 1 and 2The figure shows a multi-PIN product arc bending die of the utility model, which is used in conjunction with a press. The multi-PIN product arc bending die includes an upper die set 1 and a lower die set 2 corresponding to the upper and lower parts. The upper die set 1 is installed on the slide of the press, and the lower die set 2 is installed on the workbench of the press (not shown here). The upper die set 1 includes an upper die base 11, which is fixedly installed on the bottom of the slide of the press by bolts. An upper pad 12 fixedly connected to the upper die base 11 is provided at the bottom of the upper die base 11, and the upper pad 12 and the upper die base 11 are fixedly connected together by bolts. An upper splint 13 fixedly connected to the upper pad 12 is provided at the bottom of the upper pad 12, and the upper splint 13 and the upper pad 12 are fixedly connected together by bolts, which is convenient for disassembly and assembly; refer to the appendix of the instruction manual. Figure 1 and 2 As shown, the upper die base 11 is provided with a spring 17 fixedly connected thereto, and the spring 17 is a nitrogen spring, the lower end of which passes downward through the upper pad 12 and the upper clamping plate 13 and extends below the upper clamping plate 13; in order to facilitate the installation of the spring 17, the upper pad 12 and the upper clamping plate 13 are provided with connecting holes that correspond to each other and are connected up and down, and the spring 17 is vertically passed through the connecting holes; the bottom of the upper clamping plate 13 is connected to a stop plate 14 that can move up and down, and the lower end of the spring 17 corresponds to the top of the stop plate 14 up and down; in order to realize the upper and lower movable connection of the stop plate 14 to the upper and lower parts of the upper clamping plate 13, refer to the appendix of the instruction manual. Figure 1 and 2 As shown, the stop plate 14 is movably connected to the upper clamping plate 13 by means of equal height screws 19; in order to facilitate the movable installation of the equal height screws 19 on the upper clamping plate 13, refer to the appendix of the manual. Figure 1 As shown, the upper clamping plate 13 is provided with a connecting hole 131 that is connected to the upper and lower parts, and the connecting hole 131 is in a "T"-shaped structure, which cooperates with the contour screw 19. The contour screw 19 is arranged in the connecting hole 131 and the lower end passes through the bottom of the connecting hole 131 and is fixedly connected to the stop plate 14. The contour screw 19 can move up and down in the connecting hole 131, and its lower end is threadedly connected to the stop plate 14; usually the stop plate 14 is a rectangular structure, and in order to ensure the stability of the connection of the stop plate 14 under the upper clamping plate 13, the contour screw 19 has at least four groups, which are connected to the top four corners of the stop plate 14 in a rectangular array; the bottom of the stop plate 14 is provided with an upper stripping plate 15 fixedly connected thereto, and the upper stripping plate 15 and the stop plate 14 are fixedly connected together by bolts; a punch 16 is provided in the upper die set 1, specifically, refer to the appendix of the instruction manual. Figure 1 and 2As shown, the upper end of the punch 16 is fixed in the upper clamping plate 13, and the upper end of the punch 16 and the upper clamping plate 13 are fixed together by bolts. The lower end passes through the stop plate 14 and the upper stripping plate 15. When the mold is open, the lower end of the punch 16 will not protrude below the bottom of the upper stripping plate 15. In order to facilitate the installation of the punch 16, refer to the appendix of the instruction manual. Figure 1 As shown, the stop plate 14 and the upper stripping plate 15 are provided with punching holes 18 that are connected up and down, and the punch 16 is inserted into the punching hole 18 and the punch 16 slides up and down with the punching hole 18 to ensure that the stop plate 14 and the upper stripping plate 15 do not interfere with the punch 16; refer to the appendix of the manual Figures 2 to 5 As shown, the punch 16 is composed of a punch rod 161 and a forming head 162, which are integrally formed. Figure 4 As shown, the cross section of the forming head 162 is a vertical oblong structure, which is offset to the bottom of the punch rod 161 near the outside. Specifically, the inner side of the forming head 162, that is, the side close to the center of the upper die set after being installed on the upper die set 1, forms an inwardly concave transition portion 163 between the bottom of the punch rod 161 and the inner corner of the transition portion 163 is rounded. The outer side of the forming head 162 protrudes from the outside of the punch rod 161. This structure facilitates the single stamping of the multi-PIN product punch material 3 placed on the top of the lower die 2; refer to the appendix of the instruction manual. Figure 1 and 2 The lower die 23 is fixedly connected to the lower die 23 by bolts, and the upper die 23 is fixedly connected to the lower die 23 by bolts. It should be noted that the upper stripper 15 corresponds to the lower die 23 up and down, and a forming insert 24 is provided in the lower die 2, and the punch 16 corresponds to the forming insert 24 up and down. According to processing requirements, when the PINs on both sides of the blank 3 to be rolled need to be rolled and bent, two groups of corresponding punches 16 and forming inserts 24 are respectively provided on the upper die 1 and the lower die 2, so as to facilitate the simultaneous rolling and forming of the two sides of the blank 3; the forming insert 24 is fixedly provided in the lower die 23. In order to facilitate the disassembly and assembly of the forming insert 24, please refer to the attached manual. Figure 1 and 2 As shown, the lower template 23 is provided with an embedding groove 231 that is connected to the upper and lower parts, and the forming insert 24 is embedded in the embedding groove 231; in order to cooperate with the forming head 162 at the lower end of the punch 16, it is convenient for the round bending processing of the punching material 3 to be finalized and not easy to rebound, refer to the appendix of the instruction manual Figures 3 to 5As shown, the top of the forming insert 24 has a concave groove 241, and the bottom of the groove 241 is a semicircular structure, which cooperates with the forming head 162 up and down. The punching material placed on the lower template 24, and the part that needs to be rolled is placed above the top of the groove 241. When the punch 16 moves downward, the forming head 162 at its lower end squeezes the punching material 3 into the groove 241 and forms it according to the structural shape of the groove 241. In order to ensure the forming effect of the punching material 3, the top part of the forming insert 24 located on one side of the groove 241 and corresponding to the transition part 163 is higher than the top part on the other side relative to the groove 241. Height, after the forming insert 24 is installed on the lower template 23, the top surface of the highest part of its top is flush with the top surface of the lower template 23. At the same time, this part corresponds to the transition part 163 up and down and fits together, which can limit the downward stroke of the punch 16. After the punch 3 is placed on the top surface of the lower template 23 and the forming insert 24, the part close to the edge of the punch 3 corresponds to the lower part of the top of the forming insert 24. After placement, there is a distance between the bottom of the part close to the edge of the punch 3 and the corresponding top of the forming insert 24, which makes it convenient for the punch 16 to punch the punch 3 downward, so that the pre-curled bent part of the punch 3 can reduce the resistance force and be easier to form.

[0032] The specific working principle is as follows: Figure 6 and 7 The punch material 3 (multi-PIN product) shown is placed at the top predetermined position of the lower template 23. The pre-curled and bent part of the punch material 3 is pre-pressed into a slightly upward arc shape. Figure 2 As shown, when the mold is closed, the upper mold assembly 1 applies a downward force to the stop plate 14 through the spring 17 when it moves downward. At the same time, the stop plate 14 drives the upper stripper plate 15 downward to press the punch material 3 placed on the lower mold plate 23. The upper mold assembly 1 continues to move downward. At this time, the punch 16 is driven by the upper pad 12. As the distance between the stop plate 14 and the upper clamping plate 13 decreases, the lower end forming head 162 of the punch 16 gradually extends out of the punch hole and drives the punch material 3 to punch into the groove 241 on the forming insert 24. When the mold is completely closed, the required stamping action is completed, as shown in FIG. Figure 8 and 9 As shown, at this time, the edge of the punching material 3 forms a rounded portion 31 with a circular arc cross section; Figure 1As shown, when the mold is opened, the upper mold group 1 moves upward. During the rising process, the upper mold base 11 drives the upper pad 12 and the upper clamping plate 13 fixed to it to rise synchronously. At the same time, the lower end of the spring 17 gradually separates from the top of the stop plate 14. During the separation process, the positions of the stop plate 14 and the upper stripping plate 15 remain unchanged until the contour screw 19 is driven by the upper clamping plate 13 to rise synchronously. The contour screw 19 drives the stop plate 14 and the upper stripping plate 15 to rise, so that the upper stripping plate 15 is slowly separated from the punching material 3 pressed by it, and the curled portion 31 on the punching material 3 is not easy to rebound. At this time, one stamping movement cycle of the mold is completed.

[0033] This multi-PIN product arc bending die has a simple structure. The special structure of the punch and forming insert can ensure the bending accuracy of the multi-PIN product when it is rolled. The multi-PIN product is not easy to rebound after arc bending, which improves the processing efficiency and product processing quality of the multi-PIN product rolling.

[0034] It should be emphasized that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A multi-PIN product arc bending die, comprising an upper die set (1) and a lower die set (2) corresponding to each other, the upper die set (1) comprising an upper die base (11), an upper pad (12) fixedly connected to the upper die base (11) is provided at the bottom thereof, an upper clamping plate (13) fixedly connected to the upper die base (12) is provided at the bottom thereof, a stop plate (14) movable up and down is connected to the bottom thereof, an upper stripping plate (15) fixedly connected to the upper die base (13) is provided at the bottom thereof; the lower die set (2) comprising a lower die base (21), a lower pad (22) fixedly connected to the upper die base (21) is provided at the top thereof, a lower template (23) fixedly connected to the lower template (23) is provided at the top thereof, the upper stripping plate (15) corresponding to the lower template (23) up and down, characterized in that: A punch (16) is provided in the upper die assembly (1), and a forming insert (24) is provided in the lower die assembly (2), wherein the punch (16) corresponds to the forming insert (24) in upper and lower positions; the upper end of the punch (16) is fixed in the upper clamping plate (13), and the lower end passes through the stop plate (14) and the upper stripping plate (15); the forming insert (24) is fixed in the lower die plate (23).

2. The arc bending die for multi-PIN products according to claim 1, characterized in that: The punch (16) is composed of a punch rod (161) and a forming head (162) and is integrally formed. The cross section of the forming head (162) is a vertical oblong structure and is offset to the bottom of the punch rod (161) near the outside. An inwardly concave transition portion (163) is formed between the inner side surface of the forming head (162) and the bottom of the punch rod (161), and the outer side surface protrudes from the outside of the punch rod (161). The top of the forming insert (24) has an inwardly concave groove (241). The groove (241) cooperates with the forming head (162) up and down. The top portion of the forming insert (24) located on one side of the groove (241) and corresponding to the transition portion (163) is higher than the top portion on the other side relative to the groove (241).

3. The arc bending die for multi-PIN products according to claim 1, characterized in that: The stop plate (14) and the upper stripping plate (15) are provided with punching holes (18) communicating with each other up and down. The punch (16) is inserted into the punching hole (18) and the punch (16) and the punching hole (18) are slidably matched up and down.

4. The arc bending die for multi-PIN products according to claim 1, characterized in that: The lower template (23) is provided with an embedding groove (231) communicating with each other from top to bottom, and the molding insert (24) is embedded in the embedding groove (231).

5. The arc bending die for multi-PIN products according to claim 1, characterized in that: The stop plate (14) is movably connected to the upper clamping plate (13) via equal height screws (19).

6. The arc bending die for multi-PIN products according to claim 5, characterized in that: A connecting hole (131) communicating with each other from top to bottom is provided in the upper clamping plate (13), and the connecting hole (131) is in a T-shaped structure. The equal height screw (19) is provided in the connecting hole (131) and the lower end passes through the bottom of the connecting hole (131) and is fixedly connected to the stop plate (14).

7. The arc bending die for multi-PIN products according to claim 1, characterized in that: A spring (17) fixedly connected to the upper die base (11) is provided inside the upper die base (11). The spring (17) is a nitrogen spring, the lower end of which passes through the upper pad (12) and the upper clamping plate (13) downward and extends below the upper clamping plate (13) to correspond to the top of the stop plate (14) above and below.

8. The arc bending die for multi-PIN products according to claim 7, characterized in that: The upper pad (12) and the upper clamping plate (13) are provided with connecting holes that correspond to each other and are connected to each other, and the spring (17) is inserted into the connecting holes.

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