Punching die for micropores in lithium battery pole piece

Abstract

The utility model discloses a punching die for micropores on a lithium battery pole piece, which comprises a plurality of punching modules arranged in sequence, each punching module comprises a first module, a second module and two or more groups of inner guide pieces, each first module comprises a convex template, a punching needle plate and a guide plate, each second module comprises a concave template and a forming plate, and the inner guide pieces are arranged on the convex template. And the plurality of groups of inner guide pieces are symmetrically arranged on two sides of a punching needle plate or uniformly arrayed on the periphery of the punching needle plate. According to the utility model, the plurality of punching modules are arranged on the die and can be matched with a feeding structure to compound the die at one time to punch a plurality of pole pieces or continuously punch the pole pieces for multiple times, so that the production efficiency is high; each punching module is provided with the convex die plate and the concave die plate which are axially symmetric, the punching needle plate, the guide plate and the forming plate are arranged in the center of each punching module, and the inner guide pieces are symmetrically arranged on the two sides of each punching module, so that the punching path of each punching module can be further guided, the punching precision is improved, and the punching yield of the micropores in the pole pieces is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of stamping dies, in particular to a punching die for micro-holes on lithium battery pole pieces. Background Art

[0002] Lithium battery pole pieces generally need to form multiple tiny functional holes, and the precision requirements are very high. At present, lasers are mostly used to form micropores in production, and the hole diameter can even reach Φ0.05mm. However, most lithium battery pole pieces have carbon powder coating areas, and it is difficult for lasers to form micropores in the coating area. In production, it can only be produced by other means such as changing the product structure or production process, which has a high production cost. Utility Model Content

[0003] In response to the problems existing in the above-mentioned prior art, the utility model provides a punching die for micropores on lithium battery pole pieces, which can punch multiple pole pieces at one time or perform multiple punching actions on the pole pieces continuously, with high production efficiency. The punching path of each punching module group can be further corrected, the punching accuracy can be improved, and the yield rate of micropore punching on the pole pieces can be ensured.

[0004] In order to solve the above technical problems, a technical solution adopted by the utility model is as follows:

[0005] A punching die for micropores on a lithium battery pole piece, the punching die comprising a male die, a female die and an outer guide member matched and installed therebetween, the male die or the female die being connected to a driving device in a driving manner and being able to punch and cut a product placed on the female die under the drive thereof; and also comprising a plurality of punching die groups arranged in sequence, each of the punching die groups comprising a first module, a second module and two or more sets of inner guide members matched and installed therebetween, each of the first modules being arranged on the male die, each of the second modules being arranged on the female die, wherein:

[0006] Each of the first modules includes a male mold plate, a punch plate and a guide plate, each of the punch plates is arranged at the end of the male mold plate facing the female mold, and a plurality of punches are arranged on the male mold plate, and the plurality of punches can pass through the guide plate and extend to the outside thereof, each of the guide plates is arranged beside the end of the punch plate facing the female mold and is movably connected to the male mold plate through a limiting pull rod, and each of the guide plates can move toward the punch plate along the mold closing direction under the action of an external force;

[0007] Each of the second modules comprises a concave mold plate and a forming plate, and the end of each forming plate is adapted to a guide plate and is arranged on its moving path;

[0008] A plurality of groups of inner guides are symmetrically arranged on both sides of a punching needle plate or arranged in a uniform array on its periphery.

[0009] As a further elaboration of the above technical solution:

[0010] In the above technical solution, each of the male mold plate and the female mold plate is an axisymmetric T-shaped structure, with its larger end facing the male mold or the male mold, and two or more L-shaped positioning plates are evenly arrayed on its outer side, one end of each of the L-shaped positioning plates extends to the male mold plate or the female mold plate and is detachably fixed to it, and the other end is detachably fixed to the male mold or the female mold; each of the punching needle plate and the forming plate can be detachably fixed to the smaller end of one of the male mold plate or the female mold plate.

[0011] In the above technical solution, each group of the inner guide members includes matching inner guide pins and inner guide sleeves, and each of the inner guide pins or inner guide sleeves is arranged at the smaller end of the male template or female template and is arranged on the outside of the punching needle plate or forming plate.

[0012] In the above technical solution, each of the forming plates is provided with an avoidance hole groove for avoiding a plurality of the punching needles, and the concave plate and the concave die are provided with a chip removal hole groove connected with the plurality of the avoidance hole grooves.

[0013] In the above technical solution, the outer guide is arranged on the periphery or side of the plurality of punching and shearing die sets, and includes matching outer guide pins and outer guide sleeves, and each of the outer guide pins or outer guide sleeves can be detachably fixed on the punch or die.

[0014] Compared with the prior art, the beneficial effects of the utility model are: by arranging a number of punching and cutting module groups on the mold, it is possible to cooperate with the feeding structure to punch and cut multiple pole pieces at one time or to perform multiple punching and cutting actions on the pole pieces continuously, and the production efficiency is high; by arranging an axially symmetrical convex mold plate and a concave mold plate on each punching and cutting module group, and arranging a punching needle plate, a guide plate and a forming plate at the center, and arranging inner guide parts symmetrically on both sides thereof, the punching and cutting path of each punching and cutting module group can be further corrected, thereby improving the punching and cutting accuracy, and ensuring the yield rate of micro-hole punching on the pole piece. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic diagram of the structure of this embodiment (an outer guide is not shown);

[0016] Figure 2 is a front view of the structure of this embodiment (the outer guide member on one side is not shown);

[0017] Figure 3 is a schematic structural diagram of a punching module in this embodiment;

[0018] Figure 4 2 is a schematic diagram of the bottom view structure of the first module in this embodiment.

[0019] In the figure: 10, punch; 20, die; 30, outer guide; 40, punching die set; 41, first module; 42, second module; 43, inner guide; 1, punch plate; 2, punch needle plate; 3, guide plate; 4, limit pull rod; 5, die plate; 6, forming plate; 7, L-shaped positioning plate; 8, avoidance hole groove; 9, chip removal hole groove. DETAILED DESCRIPTION

[0020] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0021] The embodiments described with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and cannot be understood as limiting the present application. In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, "several" and "multiple" mean two or more, unless otherwise clearly and specifically defined. In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a communication between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances. In this application, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature can include the first and second features being in direct contact, or it can include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0022] like Figure 1 As shown, a punching die for micropores on a lithium battery pole piece comprises a punch 10, a die 20 and an outer guide member 30 matched therebetween. The punch 10 or the die 20 is connected to a driving device and can punch the product placed on the die 20 under the drive of the driving device. It also comprises a plurality of punching die groups 40 arranged in sequence.

[0023] like Figure 2 As shown, each punching die set 40 includes a first module 41, a second module 42 and two or more sets of inner guides 43 matched and installed therebetween. Each first module 41 is arranged on the male die 10, and each second module 42 is arranged on the female die 20. In particular, each first module 41 includes a male die plate 1, a punch plate 2 and a guide plate 3. Each punch plate 2 is arranged at the end of the male die plate 1 facing the female die 20, and is provided with a plurality of punches. The plurality of punches can pass through the guide plate 3 and extend to the outside thereof. Each guide plate 3 is arranged on the side of the end of the punch plate 2 facing the die 20 and is movably connected to the male plate 1 through a limiting pull rod 4. Each guide plate 3 can move toward the punch plate 2 along the mold closing direction under the action of external force; each second module 42 includes a die plate 5 and a forming plate 6 arranged on the die 20, and the end of each forming plate 6 is adapted to a guide plate 3 and is arranged on its moving path; a plurality of groups of internal guide members 43 are symmetrically arranged on both sides of a punch plate 2 or evenly arrayed on its periphery.

[0024] In this embodiment, the diameter of the working end of each punching pin is between 0.1 mm and 0.18 mm.

[0025] like Figure 3 As shown, in the present embodiment, each male mold plate 1 and female mold plate 5 are both axially symmetrical T-shaped structures, with their larger ends facing the male mold 10 or the male mold 20, and there are two or more L-shaped positioning plates 7 evenly arrayed on their outer sides, one end of each L-shaped positioning plate 7 extends to the male mold plate 1 or the female mold plate 5 and is detachably fixed thereto, and the other end is detachably fixed to the male mold plate 10 or the female mold 20; the punching needle plate 2 and the forming plate 6 are both detachably fixed to the smaller end of the male mold plate 1 or the female mold plate 5; each forming plate 6 is provided with an avoidance hole groove 8 for avoiding a number of punching needles, and the female mold seat 21 of the female mold 20 is provided with a chip removal hole groove 22 connected to the number of avoidance hole grooves 8; each group of inner guide members 43 includes matching inner guide pins and inner guide sleeves, and each inner guide pin or inner guide sleeve is arranged at the smaller end of the male mold plate 1 or the female mold plate 5 and is arranged on the outer side of the punching needle plate 2 or the forming plate 6.

[0026] like Figure 4 As shown, in order to further align the male mold plate 1 and the female mold plate 6 , each set of inner guide members 43 includes matching inner guide posts and inner guide sleeves, and each inner guide post or inner guide sleeve can be detachably fixed on the male mold plate 1 or the female mold plate 6 .

[0027] In this embodiment, the outer guide member 30 is arranged on the periphery or side of a plurality of punching and shearing die sets 40 , and includes matching outer guide pins and outer guide sleeves. Each outer guide pin or outer guide sleeve can be detachably fixed on the punch 10 or the die 20 .

[0028] The structure in which the guide pin and the guide sleeve cooperate to perform guidance belongs to the prior art, and the specific structure of the outer guide member 30 and the inner guide member 43 will not be described in detail here.

[0029] The utility model arranges a plurality of punching die sets 40 on the mold, and can cooperate with the feeding structure to punch multiple pole pieces at one time or perform multiple punching actions on the pole pieces continuously, with high production efficiency; by providing an axially symmetrical convex mold plate 1 and a concave mold plate 5 on each punching die set 40, and providing a punching needle plate 2, a guide plate 3 and a forming plate 6 at the center, and symmetrically providing inner guide members 43 on both sides, the punching path of each punching die set can be further corrected, thereby improving the punching accuracy and ensuring the yield rate of micro-hole punching on the pole piece.

[0030] The above does not limit the technical scope of the present invention. Any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. A punching die for micro-holes on a lithium battery pole piece, the punching die comprising a male die, a female die and an outer guide member matched and installed therebetween, the male die or the female die being connected to a driving device and being driven by the driving device to punch a product placed on the female die; characterized in that: It also includes a plurality of punching die sets arranged in sequence, each of which includes a first module, a second module and two or more sets of inner guides matched and installed therebetween, each of the first modules is arranged on the male die, and each of the second modules is arranged on the female die, wherein: Each of the first modules includes a male mold plate, a punch plate and a guide plate, each of the punch plates is arranged at the end of the male mold plate facing the female mold, and a plurality of punches are arranged on the male mold plate, and the plurality of punches can pass through the guide plate and extend to the outside thereof, each of the guide plates is arranged beside the end of the punch plate facing the female mold and is movably connected to the male mold plate through a limiting pull rod, and each of the guide plates can move toward the punch plate along the mold closing direction under the action of an external force; Each of the second modules comprises a concave mold plate and a forming plate, and the end of each forming plate is adapted to a guide plate and is arranged on its moving path; A plurality of groups of inner guides are symmetrically arranged on both sides of a punching needle plate or arranged in a uniform array on its periphery.

2. The punching die for micro-holes on lithium battery pole pieces according to claim 1, characterized in that: Each of the male mold plate and female mold plate is an axisymmetric T-shaped structure, with its larger end facing the male mold or the male mold, and two or more L-shaped positioning plates are evenly arrayed on its outer side, one end of each of the L-shaped positioning plates extends to the male mold plate or the female mold plate and is detachably fixed to it, and the other end is detachably fixed to the male mold or the female mold; each of the punching needle plate and the forming plate can be detachably fixed to the smaller end of a male mold plate or a female mold plate.

3. The punching die for micro-holes on lithium battery pole pieces according to claim 2, characterized in that: Each group of inner guides comprises matching inner guide pins and inner guide sleeves, and each inner guide pin or inner guide sleeve is arranged at the smaller end of the male template or female template and is arranged on the outer side of the punching needle plate or forming plate.

4. The punching die for micro-holes on lithium battery pole pieces according to claim 1, characterized in that: Each of the forming plates is provided with an avoidance hole groove for avoiding a plurality of the punching needles, and the concave plate and the concave die are provided with a chip removal hole groove connected with the plurality of the avoidance hole grooves.

5. The punching die for micro-holes on a lithium battery pole piece according to any one of claims 1 to 4, characterized in that: The outer guide is arranged on the periphery or side of the plurality of punching and shearing die sets, and comprises a matching outer guide pin and an outer guide sleeve. Each of the outer guide pin or outer guide sleeve can be detachably fixed on the punch or die.

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