CN206185006U - A continuous stamping die for a battery cap - Google Patents

Abstract

The utility model discloses a continuous stamping die for a battery cap, which has a compact and reliable die structure, adopts a continuous die structure, and performs double-row stamping on a metal strip, greatly improving production efficiency. In the stamping process, process holes and guide holes are used in conjunction with guide pins to align the position of the metal strip to ensure stamping accuracy and quality; the cavity structures of the upper and lower dies are cleverly designed so that the excess material outside the finished product is squeezed outward to form the battery cap as a side material, and the side material is connected to the material strip through a connecting bridge, thereby enhancing the structural stability of the battery cap before blanking.

Description

A continuous stamping die for a battery cap

technical field

The utility model relates to the technical field of production technology of battery caps, in particular to a continuous stamping die for battery caps.

Background technique

With the continuous progress and development of electronic technology, people's demand for electronic equipment is increasing day by day. With the increasing demand for electronic equipment, the demand for batteries is also increasing.

For example, for cylindrical batteries, the current production process for the battery cap of cylindrical batteries is single-die stamping or single-row continuous stamping of strips. The molds and processes for these two stamping forms cannot keep up with the current production demand. . Moreover, the traditionally used single-die stamping integrated mold has high manufacturing cost and cannot be changed at will.

Utility model content

The technical problem to be solved by the utility model is to provide a continuous stamping die for the battery cap in view of the above-mentioned deficiencies in the prior art.

In order to solve the above technical problems, the technical solution adopted by the utility model is: a continuous stamping die for the battery cap, including an upper die and a lower die, and the upper die and the lower die are provided with inserts for continuous forming of the metal strip. The continuously formed inserts sequentially include a process hole insert for punching a process hole, a first blanking insert for blanking the first waste area with the process hole as the center of symmetry, and a connection with the center of the adjacent process hole. The line is a line of symmetry and the second blanking insert for blanking the second waste area, the pre-punching insert for the concentric pre-punching of the liquid injection hole, the forming insert for changing the outer shape, punching to form the central hole and The pilot hole is concentrically punched into the punching insert for the liquid injection hole, and the blanking insert for punching the battery cap formed in the trim.

In the above technical solution, a guide pin is provided on the lower mold, and the pin guide is performed on the process hole and the guide hole.

In the above technical solution, the forming insert includes an upper forming insert and a lower forming insert; wherein, the section of the cavity of the upper forming insert is an inverted bowl-bottom shape; and the inner diameter of the cavity of the lower forming insert is larger than The maximum inner diameter of the mold cavity of the upper shaping insert, and the bottom surface of the mold cavity of the lower shaping insert is provided with a convex cylinder whose inner diameter is smaller than the maximum inner diameter of the mold cavity of the upper shaping insert.

In the above technical solution, the first blanking insert is a T-shaped structure, consisting of a "one" shaped part and a "1" shaped part, from the outer end of the "one" shaped part to the outer end of the "1" shaped part The parts are in the shape of a concave arc, and the outer end of the "1" shaped part is provided with outer concave-convex edges on both sides; the second blanking insert is an arc segment, and the two sides of the arc segment The ends are respectively provided with inner concave-convex edges, and the outer concave-convex edges and the inner concave-convex edges jointly form a connecting bridge forming structure between the material strip and the battery cap.

In the above technical solution, the "-" shaped part of the first blanking insert covers the outer edge of the metal strip.

The beneficial effects of the utility model are: the mold structure is compact and reliable, the continuous mold structure is adopted, and double-row stamping is carried out on a metal belt, which greatly improves the production efficiency. In the stamping process, the process hole and the guide hole are used to cooperate with the guide pin to guide the position of the metal strip to ensure the precision and quality of the stamping; the cavity structure of the upper mold and the lower mold is cleverly designed to make the excess material outside the finished product outward Extrusion is to turn the battery cap into side material, and the side material is connected with the material belt through the connecting bridge, so as to strengthen the structural stability of the battery cap before blanking.

Description of drawings

Fig. 1 is the sectional structure schematic diagram of the utility model battery cap;

Fig. 2 is the structural representation of continuous stamping die of the present utility model;

Fig. 3 is a schematic structural view of the first blanking insert in Fig. 2;

Fig. 4 is a schematic structural view of the second blanking insert in Fig. 2;

Fig. 5 is a schematic diagram of the state change of the metal strip in the continuous stamping process of the present invention;

Fig. 6 is a schematic diagram of structural changes of the molding insert of the present invention from the empty mold cavity, before closing the mold to after closing the mold;

Fig. 7 is a schematic diagram of the structural change from the semi-finished battery cap of the utility model to the battery cap (finished product).

In the figure, 1. Battery cap; 11. Base body; 12. Center hole; 13. Liquid injection hole; 14. Arc chamfering;

2. Continuous stamping die; 21. Process hole insert; 22. First blanking insert; 23. Second blanking insert; 24. Pre-punching insert; 25. Forming insert; 26. Punching insert 27, blanking inserts; 251, upper forming inserts; 252, lower forming inserts; 221, "one" shaped part; 222, "1" shaped part; 223, arc shape; 224, outer concave-convex edge ; 231, arc segment; 232, inner concave-convex edge;

3. Metal belt; 31. Material belt; 32. Process hole; 33. The first waste area; 34. The prototype of the battery cap; 35. The connection area; 36. The second waste area; 37. The connection bridge; 38. The guide hole ; 39, central hole (same as 12); 310, liquid injection hole (same as 13); 311, edge material; 312, semi-finished battery cap.

detailed description

Below in conjunction with accompanying drawing, the utility model is described in further detail.

As shown in Figure 1, the structure of the battery cap 1 of the present invention includes a base body 11; one end surface of the base body 11 is a bowl-shaped structure with a high center and a low edge, and the other end face of the base body 11 is a low center and high edge. A groove shape; a central hole 12 is provided in the center, and a liquid injection hole 13 is provided between the central hole 12 and the edge.

Wherein, the bowl-shaped structure is the connection between the cylinder and the truncated cone, the outer diameter of the cylinder is smaller than the minimum outer diameter of the truncated cone, and the edge of one end face with the minimum outer diameter of the truncated cone is rounded 14 .

As shown in Figures 2, 3, and 4, a continuous stamping die 2 for a battery cap 1 includes an upper die and a lower die, and the upper die and the lower die are provided with inserts for continuously forming the metal strip 3. The formed inserts sequentially include the process hole 32 insert 21 for punching the process hole 32, the first blanking insert 22 for blanking the first waste area 33 with the process hole 32 as the center of symmetry, and the adjacent process hole 32. The line connecting the centers of the holes 32 is a line of symmetry and the second blanking insert 23 for blanking the second waste area 36, the pre-punching insert 24 for concentric pre-punching the liquid injection hole 13, and the forming for changing the external shape The insert 25, the center hole 12 formed by punching and the punching insert 26 which concentrically punches the guide hole 38 into the liquid injection hole 13, and the blanking insert which punches the battery cap 1 formed in the side material 311 piece 27.

Wherein, the lower die is provided with a pilot pin, and the process hole 32 and the pilot hole 38 are pinned and piloted.

Wherein, the forming insert 25 comprises an upper forming insert 251 and a lower forming insert 252; wherein, the section of the upper forming insert 251 die cavity is an inverted bowl bottom shape; and the lower forming insert 252 die cavity The inner diameter is greater than the maximum inner diameter of the mold cavity of the upper shaping insert 251, and the bottom surface of the mold cavity of the lower shaping insert 252 is provided with a convex cylinder whose inner diameter is smaller than the maximum inner diameter of the mold cavity of the upper shaping insert.

Wherein, the first blanking insert 22 is a T-shaped structure, which is composed of a "one" shaped part 221 and a "1" shaped part 222, from the outer end of the "one" shaped part 221 to the "1" shaped part 222 Between the outer ends is a concave arc shape 223, and an outer concave-convex edge 224 is provided on both sides of the outer end of the "1"-shaped part 222; the second blanking insert 23 is an arc segment 231, Inner concave-convex edges 232 are respectively provided at both ends of the arc segment 231 , and the outer concave-convex edge 224 and the inner concave-convex edge 232 jointly form a forming structure of the connecting bridge 37 between the strip 31 and the battery cap 1 . The “-” shaped portion 221 of the first blank insert 22 covers the outer edge of the metal strip 3 .

As shown in Figure 1-7, a continuous stamping process for a battery cap 1 includes the following steps:

Step 1, start, the metal strip 3 is fed, and enters the continuous mold cavity;

Step 2, punching process holes 32 at equal intervals along the center line of the metal strip 3; the process holes 32 are used as auxiliary guide holes 38 for the material strip 31;

Step 3, punching the first waste area 33 between the process hole 32 and the two edges of the metal strip 3 continuously and equally, to form the intermediate material strip 31 and the battery cap prototype 34 at equal intervals, the intermediate material strip 31 and the battery cap The prototypes 34 are joined by a connecting area 35;

Step 4, punching the second waste material area 36 in the connection area 35 between the intermediate strip 31 and the battery cap prototype 34, so that the connection area 35 is formed into a connection bridge 37, and the connection bridge 37 is connected to the middle Between the material strip 31 and the prototype 34 of the battery cap;

Step five, pre-punching the position of the liquid injection hole 310 of the battery cap prototype 34 to form a pilot hole 38, the pilot hole 38 overlaps with the center of the liquid injection hole 310, and the inner diameter of the pilot hole 38 is smaller than the liquid injection hole 310 inner diameter;

Step 6, embossing the edge of the battery cap prototype 34 so that the edge of the battery cap prototype 34 is recessed from one end surface and protrudes to the other end surface, so that the tapered end surface of the battery cap 1 forms a stepped shape with a high center and a low edge And the other end face forms a groove shape with a low center and a high edge; at the same time, the edge angle formed by the recess and the side surface of the battery cap prototype 34 is chamfered; and the excess metal material is extruded to the outside of the protrusion to make It forms the edge material 311 of the battery cap 1, and the connecting bridge 37 is connected with the edge material 311; it is formed into a semi-finished battery cap 312;

Step 7, punching the center of the battery cap semi-finished product 312 and the guide hole 38, and forming a central hole 39 in the center, forming a concentric liquid injection hole 310 at the guide hole 38, forming a battery cap 1 finished product; The inner diameter of the pilot hole 38 is smaller than the inner diameter of the liquid injection hole 310, so the pilot hole 38 has no influence on the formation of the liquid injection hole 310;

Step 8, punching the finished battery cap 1 so that the finished battery cap 1 within the side material 311 falls off, and the process ends. Punching is vertical punching.

The above embodiments are only intended to illustrate rather than limit the utility model, so all equivalent changes or modifications made according to the method described in the scope of the patent application of the utility model are included in the scope of the patent application of the utility model.

Claims (5)

1. A continuous stamping die for battery caps, comprising a patrix and a lower die, the patrix and the lower die are provided with inserts for continuous forming of metal strips, characterized in that: the continuously formed inserts are sequentially formed The process hole insert including the punching process hole, the first blanking insert that takes the process hole as the symmetrical center and blanks the first waste area, and the line connecting the centers of adjacent process holes as the symmetric line and the second waste area The second blanking insert for blanking, the pre-punching insert for concentric pre-punching of the liquid injection hole, the forming insert for changing the outer shape, punching to form the center hole, and concentric punching for the pilot hole for liquid injection The punching insert for the hole, and the blanking insert for punching the battery cap formed in the trim. 2 . The continuous stamping die for a battery cap according to claim 1 , wherein a guide pin is provided on the lower die to guide the process hole and the guide hole. 3 . 3. A continuous stamping die for a battery cap according to claim 1, wherein the forming insert comprises an upper forming insert and a lower forming insert; wherein, the section of the mold cavity of the upper forming insert It is an inverted bowl bottom shape; and the inner diameter of the lower forming insert cavity is greater than the maximum inner diameter of the upper forming insert cavity, and the bottom surface of the lower forming insert cavity is provided with an inner diameter smaller than the maximum inner diameter of the upper shaping insert cavity. Convex cylinder. 4. A continuous stamping die for a battery cap according to claim 1, characterized in that: the first blanking insert is a T-shaped structure consisting of a "-" shaped part and a "1" shaped part, Between the outer end of the "1" shaped part and the outer end of the "1" shaped part, it is in a concave arc shape, and the outer end of the "1" shaped part is provided with outer concave-convex edges on both sides; the second The blanking insert is an arc segment, and inner concave-convex edges are respectively arranged at both ends of the arc segment, and the outer concave-convex edge and the inner concave-convex edge jointly form a connecting bridge forming structure between the material belt and the battery cap. 5 . The continuous stamping die for battery caps according to claim 4 , wherein the “-” shaped part of the first blanking insert covers the outer edge of the metal strip. 5 .