A punching die of a busbar machine

Abstract

The utility model belongs to punching technology field, especially point to a kind of bus machine's punching die;Including punch rod, still include: punch seat, the one end of sleeve joint in punch rod;Stop seat, sleeve set on punch rod, and interval setting with punch seat;Buffer reset component, between punch seat and stop seat, it includes the elastic member for resetting punch seat, the guide structure for guiding elastic member along the telescopic direction of predetermined direction and elastic buffer body;Wherein, elastic buffer body covers elastic member and guide structure in its inside, to form a collaborative working integral module.The utility model can obtain a kind of reset reliable, long service life punching die buffer reset component by the above technical scheme.

Description

Technical Field

[0001] This utility model belongs to the field of punching technology, and specifically refers to a punching die for a busbar machine. Background Technology

[0002] Busbar punching dies are used to punch connection holes in copper and aluminum busbars and are key tooling in the manufacturing of complete sets of power equipment.

[0003] Existing punching dies often use a single polyurethane buffer pad for cushioning and reset. This structure is prone to aging and permanent deformation under long-term high-frequency punching, resulting in a decrease in reset force. Other structures use a single elastic element, but the lack of guiding constraints makes them prone to lateral wobble, affecting punching accuracy and shortening the die's lifespan. Therefore, there is an urgent need for a reliable reset and long-lasting punching die buffer reset component. Utility Model Content

[0004] This invention solves the problems mentioned in the background art by integrating elastic elements and guiding structures into an integral module encapsulated by an elastic buffer body, thus taking into account stable restoring force, axial guiding constraint and buffering and shock absorption functions.

[0005] The purpose of this utility model is achieved as follows: a punching die for a busbar machine, including a punch rod, and further comprising:

[0006] A stamping seat is fitted onto one end of the punch rod;

[0007] A stop seat is sleeved on the punch rod and spaced apart from the stamping seat;

[0008] A buffer reset assembly is disposed between the stamping seat and the stop seat, and includes an elastic member for resetting the stamping seat, a guide structure for guiding the elastic member to extend and retract in a predetermined direction, and an elastic buffer body.

[0009] The elastic buffer encloses the elastic element and the guide structure within itself to form a cooperating integrated module.

[0010] The present invention is further configured such that the guide structure includes guide bosses and guide recesses located at both ends of the elastic member and cooperating with each other, the guide bosses being connected to the stop seat, and the guide recesses being connected to the stamping seat.

[0011] The present invention is further configured such that the guide boss and the stop seat, and the guide recess and the stamping seat are all threaded connections.

[0012] The present invention is further configured such that the elastic element is a return spring.

[0013] The present invention is further configured such that the elastic buffer body includes a first buffer portion filled within the return spring.

[0014] The present invention is further configured such that the elastic buffer body also includes a second buffer portion sleeved outside the guide structure.

[0015] The present invention is further configured such that the elastic buffer is made of polyurethane material.

[0016] By adopting the above technical solution, the beneficial effects that this utility model can achieve are:

[0017] 1. By integrating the elastic element, guide structure, and elastic buffer into a single module, modular installation and replacement of the buffer reset assembly are achieved, improving maintenance efficiency.

[0018] 2. The sliding fit between the guide boss and the guide recess, along with the guidance of the punch, ensures the stable extension and contraction of the elastic element in the predetermined direction, thus improving the punching accuracy.

[0019] 3. The return spring provides a stable return force and shares the main load, which, together with the cushioning and shock absorption of the elastic buffer, improves the stress state and increases the service life of the mold. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0021] Figure 2 This is a cross-sectional structural diagram of the present invention.

[0022] The reference numerals in the figure are as follows: 1. Punch rod; 2. Punch seat; 3. Stop seat; 4. Buffer reset assembly; 5. Elastic element; 6. Guide structure; 60. Guide boss; 61. Guide recess; 7. Elastic buffer body; 70. First buffer part; 71. Second buffer part. Detailed Implementation

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. See also: Figure 1-2 :

[0024] Example 1:

[0025] This embodiment provides a punching die for a busbar machine, including a punch rod 1, and further comprising:

[0026] The stamping seat 2 is sleeved onto one end of the punch rod 1;

[0027] The stop seat 3 is sleeved on the punch 1 and spaced apart from the stamping seat 2;

[0028] The buffer reset assembly 4 is disposed between the stamping seat 2 and the stop seat 3, and includes an elastic member 5 for resetting the stamping seat 2, a guide structure 6 for guiding the elastic member 5 to extend and retract in a predetermined direction, and an elastic buffer body 7.

[0029] The elastic buffer 7 encloses the elastic element 5 and the guide structure 6 inside it to form a cooperating whole module.

[0030] This embodiment provides a punching die for a busbar machine, which includes a punch rod 1, a punching seat 2, a stop seat 3, and a buffer reset assembly 4. The components are assembled in sequence and cooperate to form a complete punching buffer reset mechanism.

[0031] Punch 1 is a long rod-shaped component extending vertically, with one end being a punch for punching the busbar and the other end connected to the stamping equipment. Driven by the stamping equipment, punch 1 can reciprocate linearly in the vertical direction, thereby realizing the punching process of the busbar.

[0032] The stamping seat 2 is a block-shaped component with a threaded through hole in its center. This threaded through hole mates with an external thread on one end of the punch rod 1. The stamping seat 2 is threadedly connected and fixed to one end of the punch rod 1. Specifically, the stamping seat 2 is fitted onto the upper part of the punch rod 1 and, after being tightened by the thread, forms a whole with the punch rod 1. The two maintain synchronous movement during the stamping process; that is, when the punch rod 1 moves up and down, the stamping seat 2 moves up and down synchronously. The lower surface of the stamping seat 2 bears the reaction force transmitted from the punch during the punching process.

[0033] The stop seat 3 is also a block-shaped component, similarly fitted onto the punch 1. The stop seat 3 maintains a certain distance from the stamping seat 2. The position of the stop seat 3 relative to the punch 1 is fixed; that is, the stop seat 3 will not slide on the punch 1. Its position is limited and fixed by other structural components of the mold. The stop seat 3 can be circumferentially and axially fixed through the limiting structure of the external mold base. After assembly, there is only a clearance fit between it and the punch 1, and it will not move axially with the punch 1, providing a stable support foundation for the buffer reset assembly 4. The lower surface of the stop seat 3 faces the upper surface of the stamping seat 2, forming an installation space for mounting the buffer reset assembly 4.

[0034] The buffer reset assembly 4 is installed entirely within the mounting space between the stamping base 2 and the stop seat 3. This structure consists of an elastic element 5, a guide structure 6, and an elastic buffer body 7. These three components are combined to form a single module, jointly achieving the dual functions of buffering and reset. The modular design allows the buffer reset assembly 4 to be installed simply by placing it between the stamping base 2 and the stop seat 3 during assembly; replacement does not require disassembling the punch 1 and the mold base, significantly simplifying the assembly and disassembly process.

[0035] The elastic element 5 provides the restoring force; in this embodiment, a restoring spring is used. The restoring spring is a helical compression spring, coaxially arranged with the punch 1. One end of the spring abuts against the upper surface of the stamping seat 2, and the other end abuts against the guide structure 6. When the punch 1 drives the stamping seat 2 upward, the stamping seat 2 moves towards the stop seat 3, and the spring is compressed and stores elastic potential energy; when the punch 1 moves downward, the spring releases its potential energy and pushes the stamping seat 2 to reset.

[0036] The guide structure 6 is used to guide the elastic element 5 to extend and retract in a predetermined direction, preventing it from bending or tilting laterally during compression and rebound. The guide structure 6 includes two cooperating guide bosses 60 and guide recesses 61.

[0037] The guide boss 60 is a block-shaped component with an overall shape resembling an inverted frustum. The lower end face of the guide boss 60 has a positioning groove for accommodating the upper end of the return spring. The upper end of the return spring is embedded in this positioning groove to achieve radial positioning. The upper end face of the guide boss 60 has an external thread, through which the guide boss 60 is connected to the stop seat 3. Specifically, it is screwed into a corresponding threaded hole at the bottom of the stop seat 3, thereby fixing the guide boss 60 below the stop seat 3.

[0038] The guide recess 61 is also a block-shaped component, with an overall shape resembling an upright frustum. A guide groove is formed on the upper surface of the guide recess 61, the shape of which matches the lower end of the guide boss 60. The lower end of the guide boss 60 can be inserted into this groove, forming a sliding relationship along the axial direction. The guide boss 60 and the guide recess 61 are coaxially connected, allowing only relative sliding along the axial direction of the punch 1. This limits the radial displacement of the elastic element 5 during extension and retraction, ensuring the coaxiality of the buffer reset movement. A positioning groove is formed on the lower surface of the guide recess 61 to accommodate the lower end of the reset spring. The lower end of the reset spring is embedded in this positioning groove, achieving radial positioning. An external thread is provided on the lower surface of the guide recess 61, and a threaded hole is correspondingly formed on the upper surface of the stamping seat 2. The guide recess 61 is screwed into the threaded hole of the stamping seat 2 through this external thread, thereby fixing the guide recess 61 above the stamping seat 2.

[0039] After assembly, the upper end of the return spring is embedded in the positioning groove of the guide boss 60, and the lower end is embedded in the positioning groove of the guide recess 61. The guide boss 60 is fixed to the stop seat 3 by threads, and the guide recess 61 is fixed to the stamping seat 2 by threads. The lower end of the guide boss 60 is inserted into the guide groove of the guide recess 61, and the two form a sliding relationship that can slide relative to each other along the axial direction. Since the stamping seat 2 is fixedly connected to the punch 1, when the stamping seat 2 moves, it drives the guide recess 61 to move synchronously, while the guide boss 60 remains relatively stationary. The relative sliding distance between the two is the compression amount of the buffer return assembly 4.

[0040] The elastic buffer 7 is an integrated component molded from polyurethane material. During manufacturing, the return spring, guide boss 60, and guide recess 61 are first assembled according to the aforementioned positional relationship. Then, this assembly is placed into a dedicated molding die, and molten polyurethane material is injected into the die. The polyurethane material flows within the die, filling the internal and external spaces of the entire assembly. After the polyurethane material cools and solidifies, it forms an integral module that completely encloses the return spring and guide structure 6. The elastic buffer 7 only covers the non-mating surfaces of the elastic element 5 and the guide structure 6; it does not fill the sliding fit gap between the guide boss 60 and the guide recess 61, nor does it hinder the axial expansion and contraction deformation of the elastic element 5, ensuring the normal operation of all components.

[0041] Specifically, the elastic buffer 7 includes two main parts: a first buffer part 70 and a second buffer part 71.

[0042] The first buffer portion 70 refers to the polyurethane material filled inside the return spring. Specifically, during the molding process, molten polyurethane material flows into the gaps between the coils of the return spring, wrapping each coil of the spring. After curing, this polyurethane filling the spring gaps forms the first buffer portion 70. When the return spring is compressed or stretched, the first buffer portion 70 undergoes elastic deformation, damping the movement of the spring and thus absorbing impact energy.

[0043] The second buffer portion 71 refers to the polyurethane material sleeved on the outside of the guide structure 6. Specifically, during the molding process, the molten polyurethane material wraps around the outer peripheral walls of the guide boss 60 and the guide recess 61, forming an elastic outer layer. This elastic outer layer completely encloses the guide boss 60 and the guide recess 61. When the guide structure 6 moves during compression and rebound, the second buffer portion 71 also undergoes elastic deformation, damping the movement of the guide structure 6 on the one hand, and protecting the guide structure 6 from the intrusion of external impurities on the other. Both the first buffer portion 70 and the second buffer portion 71 deform synchronously with the elastic element 5 and the guide structure 6, providing only damping and protection functions, and do not constrain or interfere with the reset movement of the elastic element 5 or the sliding fit of the guide structure 6.

[0044] Before the punching operation begins, the punching seat 2 and the stop seat 3 are in their initial positions, and the buffer reset assembly 4 is in a free state or a slightly pre-pressurized state.

[0045] When the punching operation begins, the external power drives the punching seat 2 to move along the axial direction of the punch rod 1 toward the stop seat 3. The punching seat 2 drives the guide recess 61 to move synchronously. The guide boss 60 cooperates with the guide recess 61 to restrict the direction of movement. The elastic element 5 is axially compressed, and the elastic buffer body 7 deforms synchronously to absorb the impact. After the punching operation is completed, the elastic element 5 drives the punching seat 2 to reset along the axial direction of the punch rod 1 by the rebound force generated by its own deformation. The elastic buffer body 7 rebounds synchronously, completing one punching and reset work cycle.

[0046] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Therefore, all equivalent changes made to the structure, shape, and principle of the present utility model should be covered within the scope of protection of the present utility model.

Claims

1. A punching die for a busbar machine, comprising a punch rod (1), characterized in that, Also includes: A stamping seat (2) is sleeved on one end of the punch (1); The stop seat (3) is sleeved on the punch (1) and spaced apart from the stamping seat (2); The buffer reset assembly (4) is located between the stamping seat (2) and the stop seat (3), and includes an elastic element (5) for resetting the stamping seat (2), a guide structure (6) for guiding the elastic element (5) to extend and retract in a predetermined direction, and an elastic buffer body (7). The elastic buffer (7) encloses the elastic element (5) and the guide structure (6) inside it to form a cooperating whole module.

2. The punching die for a busbar machine according to claim 1, characterized in that, The guide structure (6) includes a guide boss (60) and a guide recess (61) located at both ends of the elastic member (5) and cooperating with each other. The guide boss (60) is connected to the stop seat (3), and the guide recess (61) is connected to the stamping seat (2).

3. The punching die for a busbar machine according to claim 2, characterized in that, The guide boss (60) and the stop seat (3), the guide recess (61) and the stamping seat (2) are all threadedly connected.

4. The punching die for a busbar machine according to claim 1, characterized in that, The elastic element (5) is a return spring.

5. The punching die for a busbar machine according to claim 4, characterized in that, The elastic buffer (7) includes a first buffer portion (70) filled within the return spring.

6. The punching die for a busbar machine according to claim 5, characterized in that, The elastic buffer (7) also includes a second buffer part (71) sleeved outside the guide structure (6).

7. The punching die for a busbar machine according to claim 1, characterized in that, The elastic buffer (7) is made of polyurethane material.

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