Forming die core assembly and stamping device for producing pole fitting

Abstract

The utility model provides a forming die core assembly and a stamping device for producing pole fittings. The forming mold core assembly comprises an upper mold forming mold core and a lower mold forming mold core. The upper mold forming mold core and the lower mold forming mold core are correspondingly arranged, the lower mold forming mold core is provided with a deformation groove and a plurality of deformation containing grooves, the deformation containing grooves are distributed along the periphery of the deformation groove and communicated with the deformation groove, and each deformation containing groove is correspondingly arranged at the tail end, connected with the to-be-deformed area, of the corresponding connecting corner column; when the upper mold forming mold core and the lower mold forming mold core are aligned and closed, a structure reinforcing protrusion is formed at the tail end, connected with the to-be-deformed area, of each connecting corner column. In this way, it is ensured that each connecting corner column still has good structural connection strength, and then the problem that the tail ends, connected with the to-be-deformed area, of the connecting corner columns are deformed and broken can be effectively solved; and meanwhile, accurate positioning of the to-be-deformed area and the next station is also ensured, and the yield of the formed and blanked pole fitting is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of producing pole accessories, in particular to a forming die core component and a punching device for producing pole accessories. Background Art

[0002] The battery terminal assembly is an important part of the battery composition. Its main function is to transmit the electrical energy inside the battery to the external circuit through the terminal, thereby providing power to external devices.

[0003] Currently, in the actual production process of cylindrical pole accessories, manufacturers usually use progressive dies in stamping dies to stretch, punch, shape and blank the metal strip to obtain the above-mentioned pole accessories.

[0004] Generally, a plurality of avoidance holes will be punched out of the metal strip by the front punching station, so that a circular central deformation zone is formed on the metal strip, wherein the circular central deformation zone is fixedly connected to the main body of the metal strip through some peripheral connecting columns. When the circular central deformation zone moves to the stretching, shaping and other stations of the progressive die, the connection between the connecting column and the circular central deformation zone will be squeezed and deformed by the upper die and the lower die, which can easily lead to the deformation and fracture of the above-mentioned connection, that is, the structural connection strength of the connection is insufficient, thereby causing the circular central deformation zone and the main body of the metal strip to loosen or detach, seriously affecting the precise positioning of the circular central deformation zone and the next station, thereby resulting in a low yield rate of the pole accessories after the final forming and blanking. Utility Model Content

[0005] The purpose of the utility model is to overcome the shortcomings of the existing technology and provide a forming die core assembly and stamping device that can effectively avoid the problem of deformation and fracture at the end of the connecting corner column connecting the area to be deformed, while ensuring the precise positioning of the area to be deformed and the next workstation, thereby effectively improving the yield rate of the pole accessories after forming and blanking.

[0006] The purpose of this utility model is achieved through the following technical solutions:

[0007] A forming die core assembly for producing a pole fitting is used to stamp a to-be-deformed area of ​​a metal strip body, the to-be-deformed area being used to form the pole fitting, a plurality of connecting corner posts being formed around the periphery of the to-be-deformed area, the plurality of connecting corner posts being used to connect the to-be-deformed area with the metal strip body, comprising:

[0008] Upper mold forming core;

[0009] A lower mold forming core; the upper mold forming core is correspondingly arranged with the lower mold forming core, the lower mold forming core is provided with a deformation groove and a plurality of deformation accommodating grooves, the plurality of deformation accommodating grooves are distributed along the periphery of the deformation groove and are connected to the deformation groove, and each of the deformation accommodating grooves is correspondingly arranged at the end of the corresponding connecting corner column connecting the area to be deformed;

[0010] When the upper mold forming core and the lower mold forming core are aligned and clamped, a structural reinforcement protrusion is formed at the end of each connecting corner column connected to the area to be deformed.

[0011] In one embodiment, the lower mold forming core is further provided with an insert hole, and the insert hole is used for fixing and installing the forming insert.

[0012] In one embodiment, the projection area of ​​the deformation groove on the projection surface is larger than the projection area of ​​the area to be deformed on the projection surface, and the projection surface is a plane perpendicular to the direction of alignment and clamping of the upper mold forming core and the lower mold forming core.

[0013] In one embodiment, each of the deformation accommodating grooves is semicircular; and / or,

[0014] The area to be deformed is circular in shape.

[0015] In one embodiment, the bottom surface of the deformation groove is a first molding plane, and each of the deformation accommodating grooves is provided with a second molding plane, and the second molding plane is higher than the first molding plane.

[0016] In one embodiment, a first guide rounded surface is provided between the first molding plane and the second molding plane, and around the bottom edge of the deformation groove.

[0017] In one embodiment, the height difference between the first molding plane and the second molding plane ranges from 0.15 mm to 0.3 mm.

[0018] In one embodiment, a second guide fillet surface is provided at the periphery of the opening of the insert hole.

[0019] In one embodiment, the lower mold forming core is an integrally formed structure.

[0020] A stamping device comprises a forming die core assembly for producing a pole accessory as described in any one of the above embodiments.

[0021] Compared with the prior art, the present invention has at least the following advantages:

[0022] Since deformation accommodating grooves are correspondingly provided at the ends of the multiple connecting corner columns connecting the area to be deformed, when the upper mold forming core and the lower mold forming core are aligned and clamped, a structural reinforcement protrusion is formed at the end of each connecting corner column connecting the area to be deformed, thereby ensuring that each connecting corner column still has good structural connection strength, and thus can effectively avoid the problem of deformation and fracture at the end of the connecting corner column connecting the area to be deformed; in this way, the precise positioning of the area to be deformed and the next workstation is ensured, thereby improving the yield rate of the pole accessories after forming and blanking. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] 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.

[0024] Figure 1 Schematic diagram of the structure of a forming mold core assembly for producing a pole accessory in one embodiment;

[0025] Figure 2 for Figure 1 A top view of a forming die core assembly for producing a pole fitting is shown;

[0026] Figure 3 for Figure 2 A partial enlarged view of position A of a forming die core assembly for producing a pole accessory is shown;

[0027] Figure 4 This is a physical picture of a portion of the metal strip body after being stamped by the forming die core assembly;

[0028] Figure numerals: forming core assembly 10 for producing pole accessories; metal strip body 100; area to be deformed 110; connecting corner column 120; lower mold forming core 200; deformation groove 201; deformation accommodating groove 202; insert hole 203; first forming plane 210; second forming plane 220; first guide rounded corner surface 230; second guide rounded corner surface 240. DETAILED DESCRIPTION

[0029] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of the present invention.

[0030] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains. The terms used herein in the specification of this invention are intended solely for the purpose of describing specific embodiments and are not intended to limit this invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0032] The present disclosure provides a forming die core assembly for producing pole accessories, which is used to stamp a region to be deformed of a metal strip body, and the region to be deformed is formed into a pole accessory. A plurality of connecting corner columns are formed on the periphery of the region to be deformed, and the plurality of connecting corner columns connect the region to be deformed with the metal strip body. The forming die core assembly for producing pole accessories includes an upper die forming die core and a lower die forming die core. The upper die forming die core is corresponding to the lower die forming die core, and the lower die forming die core is provided with a deformation groove and a plurality of deformation accommodating grooves. The plurality of deformation accommodating grooves are distributed along the periphery of the deformation groove and are connected to the deformation groove. Each deformation accommodating groove is corresponding to the end of the corresponding connecting corner column connecting to the region to be deformed. When the upper die forming die core and the lower die forming die core are aligned and clamped, a structural reinforcement protrusion is formed at the end of each connecting corner column connecting to the region to be deformed.

[0033] See also Figures 1 to 3 In order to better understand the forming mold core assembly 10 for producing a pole accessory of the present application, the forming mold core assembly 10 for producing a pole accessory is further explained below:

[0034] A forming core assembly 10 for producing a pole fitting according to one embodiment includes an upper forming core (not shown) and a lower forming core 200. The upper forming core (not shown) is disposed correspondingly to the lower forming core 200. The lower forming core 200 is provided with a deformation groove 201 and a plurality of deformation accommodating grooves 202. The plurality of deformation accommodating grooves 202 are distributed along the periphery of the deformation groove 201 and communicate with the deformation groove 201. Each deformation accommodating groove 202 is disposed correspondingly to the end of the corresponding connecting corner post 120 connecting to the area to be deformed 110. When the upper forming core (not shown) and the lower forming core 200 are aligned and clamped, a structural reinforcement protrusion (not shown) is formed at the end of each connecting corner post 120 connecting to the area to be deformed 110.

[0035] In this embodiment, since deformation accommodating grooves 202 are correspondingly provided at the ends of the plurality of connecting corner posts 120 connected to the area to be deformed 110, when the upper mold forming core (not shown) and the lower mold forming core 200 are aligned and clamped, a structural reinforcement protrusion (not shown) is formed at the end of each connecting corner post 120 connected to the area to be deformed 110, thereby ensuring that each connecting corner post 120 still has good structural connection strength, and thus can effectively avoid the problem of deformation and fracture at the end of the connecting corner post 120 connected to the area to be deformed 110; in this way, the precise positioning of the area to be deformed 110 and the next workstation is ensured, thereby improving the yield rate of the pole accessories after forming and blanking.

[0036] like Figure 1 As shown, in one embodiment, the lower mold core 200 further defines an insert hole 203 for securing a molding insert. This facilitates assembly and disassembly of the lower mold core 200 and the molding insert, and also facilitates maintenance and adjustment of the lower mold core 200 or the molding insert by technicians.

[0037] like Figures 1 to 3 As shown, in one embodiment, the projection area of ​​the deformation groove 201 on the projection surface is larger than the projection area of ​​the area to be deformed 110 on the projection surface, and the projection surface is a plane perpendicular to the direction of alignment and clamping of the upper mold forming core (not shown) and the lower mold forming core 200.

[0038] It can be understood that since the projected area of ​​the deformation groove 201 on the projection surface is larger than the projected area of ​​the area to be deformed 110 on the projection surface, when metal deformation occurs in the area to be deformed 110, an excess gap can be reserved between the deformation groove 201 of the upper mold forming core (not shown) and the lower mold forming core 200, so that the peripheral metal part of the area to be deformed 110 has space for deformation, avoiding the problem of overburning or mold jamming.

[0039] like Figure 1 and Figure 3 As shown, in one embodiment, each of the deformation accommodating grooves 202 is semicircular. In this way, when the upper mold forming core (not shown) and the lower mold forming core 200 are aligned and molded, a structural reinforcement protrusion (not shown) matching the deformation accommodating groove 202 is formed at the end of each connecting corner column 120 connected to the area to be deformed 110, ensuring that each connecting corner column 120 still has good structural connection strength. Of course, there is no limitation here, and those skilled in the art can also choose other shapes as needed. In one embodiment, the area to be deformed 110 is circular. In this way, the metal in the area to be deformed 110 is compressed and extended more evenly to the surrounding area during deformation, ensuring the molding effect of the cylindrical pole fitting.

[0040] It should be noted that the molding shape of the structural reinforcement protrusion (not shown) changes according to the actual shape of the deformation accommodating groove 202, that is, the molding shape of the structural reinforcement protrusion (not shown) matches the shape of the deformation accommodating groove 202.

[0041] like Figure 1 As shown, in one embodiment, the bottom surface of the deformation groove 201 is a first molding plane 210, and each of the deformation accommodating grooves 202 is provided with a second molding plane 220, which is higher than the first molding plane 210. In one embodiment, a first guide fillet 230 is provided between the first molding plane 210 and the second molding plane 220, and around the bottom edge of the deformation groove 201. In one embodiment, the height difference between the first molding plane 210 and the second molding plane 220 ranges from 0.15 mm to 0.3 mm.

[0042] It can be understood that in this embodiment, a height difference is set between the first forming plane 210 and the second forming plane 220, which is conducive to the gradual deformation trend of the metal in the deformation zone 110 being extruded, and the first guide rounded surface 230 helps the metal in the deformation zone 110 to be extruded and deformed more smoothly, that is, ensures the smoothness of the alignment and clamping stamping of the upper mold forming core (not shown) and the lower mold forming core 200.

[0043] It should be noted that, in this embodiment, the upper mold forming core (not shown) and the lower mold forming core 200 are only one of the stamping stations on the progressive die. There is no height difference between the first molding plane 210 and the second molding plane 220 of the next stamping station of the above-mentioned stamping station, that is, the first molding plane 210 and the second molding plane 220 are coplanar.

[0044] like Figure 1As shown, in one embodiment, a second guide fillet surface 240 is provided at the periphery of the opening of the insert hole 203 .

[0045] It can be understood that in this embodiment, the forming end of the forming insert is lower than the orifice of the insert hole 203. Therefore, by providing a second guide fillet surface 240 around the orifice of the insert hole 203, it helps the metal in the deformation zone 110 to be squeezed and deformed to the insert hole 203, and to form a shape that matches the insert hole 203 and the forming insert.

[0046] like Figure 1 and Figure 2 As shown, in one embodiment, the lower mold core 200 is an integrally molded structure. This provides the lower mold core 200 with good structural strength, ensuring that the lower mold core 200 can withstand the significant deformation pressure of the metal strip body 100 during the alignment and clamping process of the upper mold core (not shown) and the lower mold core 200.

[0047] The present application also provides a stamping device, comprising the forming core assembly 10 for producing a pole accessory as described in any of the above embodiments.

[0048] In this embodiment, since deformation accommodating grooves are correspondingly provided at the ends of the multiple connecting corner columns connected to the area to be deformed, when the upper mold forming core and the lower mold forming core are aligned and clamped, a structural reinforcement protrusion is formed at the end of each connecting corner column connected to the area to be deformed, thereby ensuring that each connecting corner column still has good structural connection strength, and thus can effectively avoid the problem of deformation and fracture at the end of the connecting corner column connected to the area to be deformed; in this way, it also ensures the precise positioning of the area to be deformed and the next workstation, thereby improving the yield rate of the pole accessories after forming and blanking.

[0049] Compared with the prior art, the present invention has at least the following advantages:

[0050] Since deformation accommodating grooves are correspondingly provided at the ends of the multiple connecting corner columns connecting the area to be deformed, when the upper mold forming core and the lower mold forming core are aligned and clamped, a structural reinforcement protrusion is formed at the end of each connecting corner column connecting the area to be deformed, thereby ensuring that each connecting corner column still has good structural connection strength, and thus can effectively avoid the problem of deformation and fracture at the end of the connecting corner column connecting the area to be deformed; in this way, the precise positioning of the area to be deformed and the next workstation is ensured, thereby improving the yield rate of the pole accessories after forming and blanking.

[0051] The above-described embodiments merely represent several implementations of the present invention. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that a person skilled in the art would be able to make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements fall within the scope of protection of the present invention. Therefore, the scope of protection of the present utility model patent shall be determined by the appended claims.

Claims

1. A forming die core assembly for producing a pole accessory, used for stamping a to-be-deformed area of ​​a metal strip body, wherein the to-be-deformed area is used to form the pole accessory, and a plurality of connecting corner posts are formed on the periphery of the to-be-deformed area, wherein the plurality of connecting corner posts are used to connect the to-be-deformed area with the metal strip body, characterized in that: include: Upper mold forming core; Lower mold forming core; The upper mold forming core is correspondingly arranged with the lower mold forming core, and the lower mold forming core is provided with a deformation groove and a plurality of deformation accommodating grooves. The plurality of deformation accommodating grooves are distributed along the periphery of the deformation groove and are connected to the deformation groove. Each of the deformation accommodating grooves is correspondingly arranged at the end of the corresponding connecting corner column connecting the area to be deformed; When the upper mold forming core and the lower mold forming core are aligned and clamped, a structural reinforcement protrusion is formed at the end of each connecting corner column connected to the area to be deformed.

2. The forming mold core assembly for producing a pole accessory according to claim 1, characterized in that: The lower mold forming core is also provided with an insert hole, and the insert hole is used for fixing and installing the forming insert.

3. The forming mold core assembly for producing a pole accessory according to claim 1, characterized in that: The projection area of ​​the deformation groove on the projection surface is larger than the projection area of ​​the area to be deformed on the projection surface, and the projection surface is a plane perpendicular to the direction of alignment and clamping of the upper mold forming core and the lower mold forming core.

4. The forming mold core assembly for producing a pole accessory according to claim 1, characterized in that: Each of the deformation accommodating grooves is semicircular; and / or, The area to be deformed is circular in shape.

5. The forming mold core assembly for producing a pole accessory according to claim 1, characterized in that: The bottom surface of the deformation groove is a first molding plane, and each of the deformation accommodating grooves is provided with a second molding plane, which is higher than the first molding plane.

6. The forming mold core assembly for producing a pole accessory according to claim 5, characterized in that: A first guide fillet surface is provided between the first molding plane and the second molding plane, and at the periphery of the groove bottom of the deformation groove.

7. The forming mold core assembly for producing a pole accessory according to claim 5, characterized in that: A height difference between the first molding plane and the second molding plane ranges from 0.15 mm to 0.3 mm.

8. The forming mold core assembly for producing a pole accessory according to claim 2, characterized in that: A second guide fillet surface is provided at the periphery of the opening of the insert hole.

9. The forming mold core assembly for producing a pole accessory according to claim 1, characterized in that: The lower mold forming core is an integrally formed structure.

10. A punching device, characterized in that: A forming mold core assembly for producing a pole accessory comprising any one of claims 1 to 9.

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