High-precision punching die

Abstract

The utility model relates to a high-precision punching die. The high-precision punching die comprises an upper die module and a lower die module, the upper die module and the lower die module are in sliding connection through a first guide module; the punching die is characterized in that a punching die set is movably arranged between the upper die set and the lower die set; the punching module is connected with the lower die module in a sliding mode through a second guide module. The high-precision punching die is ingenious in design, the punching module is independently arranged between the upper die module and the lower die module, the distance between the punch and the female die knife edge is shortened, the punch is more stable during punching, the upper die module and the lower die module are preliminarily positioned through the first guide module, and the punching precision is improved. The punching module and the lower die module are subjected to secondary positioning through the second guide module, so that the punching module is guided on the lower die module, punch positioning is more accurate, punching machining errors can be reduced, errors in the up-down operation process of the upper die module and the lower die module can be reduced, the tolerance of a product can be controlled to be very small, and the product quality is improved. And customer requirements are met.

Description

Technical Field

[0001] The utility model relates to the technical field of processing molds, and more specifically to a high-precision punching mold. Background Art

[0002] In mechanical processing production, it is often necessary to open holes or grooves on metal plates, so punching dies are very important dies that can improve production efficiency and have high safety. Existing punching dies such as Figure 1 As shown, it includes an upper die assembly 1 and a lower die assembly 2; a guide column 3 and a punch 4 are fixedly provided on the upper die assembly 1; the upper die assembly 1 can move up and down relative to the lower die assembly 2 through the guide column 3; the lower die assembly is provided with a die 5 that cooperates with the punch 4 for punching holes; the punch of the above structure can only punch the die 5 in the direction of the guide column 3 along the upper die assembly, resulting in a large stamping stroke, and the punch 4 may not be accurately aligned with the die 5, resulting in a large tolerance of the product punching, which does not meet customer requirements. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a high-precision punching die in view of the above-mentioned defects of the prior art.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a high-precision punching die, comprising an upper die module and a lower die module, the upper die module and the lower die module being slidably connected by a first guide module; wherein a punching die is movably arranged between the upper die module and the lower die module; the punching die and the lower die module are slidably connected by a second guide module; the punching die comprises a first clamping plate, a first stop plate fixedly connected to the first clamping plate, and a first dividing block movably connected to the first stop plate by an elastic connecting member; a punch is fixedly arranged on the lower surface of the first clamping plate, and the first stop plate and the first dividing block are both provided with a through hole for avoiding the punch; a concave die blade corresponding to the punch is arranged on the lower die module; during the assembly process of the upper die, the first clamping plate is driven to move toward the first dividing block to drive the punch to punch the product on the upper surface of the concave die blade;

[0005] The high-precision punching die of the utility model, wherein the lower die module is further provided with a pusher assembly to prevent the punch from sticking to the product on the upper surface of the die blade, and a limit column vertically arranged on one side of the punching die module; the limit column is provided with a slide groove for inserting one end of the first material dividing block and moving longitudinally on the side facing the punching die;

[0006] The high-precision punching die of the utility model, wherein the second guide module is located in the middle of the punching module; the elastic connecting member is located between the second guide module and the limiting column;

[0007] The high-precision punching die of the utility model, wherein the first guide die set and the second guide die set are respectively located on two opposite sides of the punching die set;

[0008] The high-precision punching die of the utility model, wherein the upper die set is provided with an avoidance groove corresponding to the punching die set and for insertion thereof;

[0009] The high-precision punching die of the utility model, wherein the punches are provided in plurality, and the lower end surfaces of the plurality of punches are all in the same plane;

[0010] The high-precision punching die of the utility model, wherein the second guide die set comprises a first guide seat arranged in the first material dividing block, a second guide seat arranged in the lower die die set and corresponding to the first guide seat, and a guide column sequentially passing through the first guide seat and the second guide seat; the guide column is fixedly mounted on the lower surface of the first stop plate;

[0011] The high-precision punching die of the utility model, wherein the pusher assembly comprises an anti-sticking ejector pin longitudinally arranged in sequence in the lower die module, a return spring providing elastic return force for the anti-sticking ejector pin, and a stop screw fixedly connected to the lower end of the lower die module; one end of the return spring is fixedly connected to the anti-sticking ejector pin, and the other end is fixedly connected to the stop screw; in a natural state, at least a portion of the anti-sticking ejector pin protrudes from the upper surface of the lower die module;

[0012] The high-precision punching die of the utility model, wherein the elastic connecting member comprises a fixing column which passes through the first clamping plate and the first stop plate in sequence and is fixedly connected to the first dividing block, and a buffer spring which is movably sleeved on the fixing column; one end of the buffer spring is fixedly connected to the first clamping plate, and the other end is fixedly connected to the first dividing block; when the buffer spring is in a free state, a gap is left between the first stop plate and the first dividing block;

[0013] The high-precision punching die of the utility model, wherein a cushion block fixedly connected to the upper die assembly is further provided in the avoidance groove.

[0014] The beneficial effects of the utility model are as follows: the high-precision punching die is cleverly designed, the punching die set is separately arranged between the upper die set and the lower die set, the distance between the punch and the die cutting edge is shortened, the punch is more stable during punching, the upper die set is initially positioned by the first guide die set and the lower die set, the punching die is secondarily positioned by the second guide die set and the lower die set, so that the punching die is guided on the lower die set, the punch is positioned more accurately, not only the punching processing error can be reduced, but also the error in the upper and lower die sets during the up and down operation can be reduced, which is beneficial to control the product tolerance to a very small level and meet customer requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work:

[0016] Figure 1 It is a structural schematic diagram of a punching die of the background technology (opening state of the upper die assembly 1 and the lower die assembly 2);

[0017] Figure 2 This is a schematic diagram of the structure of a high-precision punching die in a preferred embodiment of the utility model. Figure 1 (Opening status of the upper mold assembly and the lower mold assembly);

[0018] Figure 3 yes Figure 2 The enlarged view of point A in the middle;

[0019] Figure 4 This is a schematic diagram of the structure of a high-precision punching die in a preferred embodiment of the utility model. Figure 2 (Mold closing status of upper mold assembly and lower mold assembly). DETAILED DESCRIPTION

[0020] The terms "first", "second", "third" and "fourth" etc. in the specification and claims of the present invention and the drawings are used to distinguish different objects, rather than to describe a specific order. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units that are not listed, or may optionally include other steps or units that are inherent to these processes, methods, products or devices.

[0021] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present invention. The appearance of the phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0022] "Multiple" means two or more. "And / or" describes the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the related objects are in an "or" relationship.

[0023] Moreover, the terms "up, down, front, back, left, right, upper end, lower end, longitudinal" and the like indicating directions are all based on the posture and position of the device or equipment described in this solution during normal use.

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the following will be described clearly and completely in combination with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are partial embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the present invention.

[0025] A high-precision punching die in a preferred embodiment of the utility model is as follows Figure 2-4 As shown, it includes an upper die module 10 and a lower die module 20, and the upper die module 10 and the lower die module 20 are slidably connected through a first guide module 30; wherein a punching module 40 is movably arranged between the upper die module 10 and the lower die module 20; the punching module 40 and the lower die module 20 are slidably connected through a second guide module 50; the punching module 40 includes a first clamping plate 41, a first stop plate 42 fixedly connected to the first clamping plate 41, and a first stop plate 42 fixedly connected to the first clamping plate 41 through an elastic connecting member 43 is a first dividing block 44 movably connected to the first stop plate 42; a punch 45 is fixedly arranged on the lower surface of the first clamping plate 41, and both the first stop plate 42 and the first dividing block 44 are provided with a through hole 421 for avoiding the punch 45; a die cutting edge 21 corresponding to the punch 45 is arranged on the lower die assembly 20; during the mold closing process of the upper die assembly 10, the first clamping plate 41 is driven to move toward the first dividing block 44 to drive the punch 45 to punch the product on the upper surface of the die cutting edge 21.

[0026] The high-precision punching die is cleverly designed, with the punching die separately set between the upper die and the lower die, shortening the distance between the punch and the die edge, making the punch more stable during punching. The upper die is initially positioned by the first guide die and the lower die, and the punching die is secondarily positioned by the second guide die and the lower die, so that the punching die is guided on the lower die, and the punch is positioned more accurately, which can not only reduce the punching processing error, but also reduce the error during the upper and lower die movements, which is beneficial to control the product tolerance to a very small level to meet customer requirements.

[0027] Optionally, in the utility model, the upper die assembly 10 includes an upper die base 11, a first pad 12, a second clamping plate 13, a second stop plate 14 and an upper stripping plate 15 which are arranged in sequence from top to bottom; the second clamping plate 13 is fixedly connected to the upper die base 11 through the first pad 12; the second stop plate 14 is fixedly connected to the upper stripping plate 15; the second stop plate 14 can move relative to the second clamping plate 13; optionally, the lower die assembly 20 includes a lower template 201, a second pad 202 and a lower die base 203 which are fixedly connected in sequence from top to bottom; the structure is simple.

[0028] Furthermore, the lower die module 20 is also provided with a pusher assembly 22 to prevent the punch 45 from sticking to the product on the upper surface of the die blade 21, and a limit column 23 vertically arranged on one side of the punching module 40; the limit column 23 is provided with a slide groove 231 for inserting one end of the first material dividing block 44 and moving longitudinally on the side facing the punching module 40. The punching module 40 is pushed upward by the pusher assembly 22 to separate the punch 45 from the product on the upper surface of the die blade 21, which is convenient for subsequent stripping; the limit column 23 and its slide groove 231 can guide and limit the punching module in the process of the pusher assembly 22 pushing the punching module upward, so as to prevent the punching module from being completely separated from the lower die module 20.

[0029] Furthermore, the second guide module 50 is located in the middle of the punching module 40; the elastic connecting member 43 is located between the second guide module 50 and the limiting column 23; the punching module 40 is subjected to two-point forces, and the punching module 40 moves more smoothly.

[0030] Furthermore, the first guide module 30 and the second guide module 50 are respectively located on two opposite sides of the punching module 40; the punching of the die is more stable and the punching error is smaller.

[0031] Furthermore, the upper die module 10 is provided with an avoidance groove 101 corresponding to the punching module 40 and for its insertion; the structure is compact, and when the mold is in place, the punching module 40 is stored or hidden on the upper die module 10, which can not only protect the punching module 40, but also make greater use of the internal space, with high space utilization.

[0032] Furthermore, a plurality of punches 45 are provided, and the lower end faces of the plurality of punches 45 are all in the same plane, so that a plurality of punch holes can be formed by one die closing, and the punching efficiency is high.

[0033] Furthermore, the second guide module 50 includes a first guide seat 51 arranged in the first dividing block 44, a second guide seat 52 arranged in the lower mold module 20 and corresponding to the first guide seat 51, and a guide column 53 that passes through the first guide seat 51 and the second guide seat 52 in sequence; the guide column 53 is fixedly installed on the lower surface of the first stop plate 42, has good guiding properties, and can ensure that the punching module 40 moves on a preset travel path; it is worth noting that the structure of the first guide mold 30 is the same as that of the second guide module 50, and the structure is stable.

[0034] Furthermore, the pusher assembly 22 includes an anti-sticking material ejector pin 221 longitudinally arranged in sequence in the lower mold module 20, a return spring 222 providing elastic return force for the anti-sticking material ejector pin 221, and a stop screw 223 fixedly connected to the lower end of the lower mold module 20; one end of the return spring 222 is fixedly connected to the anti-sticking material ejector pin 221, and the other end is fixedly connected to the stop screw 223; in the natural state, at least a portion of the anti-sticking material ejector pin 221 protrudes from the upper surface of the lower mold module 20.

[0035] Furthermore, the elastic connecting member 43 includes a fixed column 431 which passes through the first clamping plate 41 and the first stop plate 42 in sequence and is fixedly connected to the first dividing block 44, and a buffer spring 432 which is movably mounted on the fixed column 431; one end of the buffer spring 432 is fixedly connected to the first clamping plate 41, and the other end is fixedly connected to the first dividing block 44; when the buffer spring 432 is in a free state, a gap is left between the first stop plate 42 and the first dividing block 44; when the mold is closed, the buffer spring 432 is in a compressed state, and the first stop plate 42 of the punching module 40 fits up and down with its first dividing block 44.

[0036] Furthermore, a cushion block 102 fixedly connected to the upper die assembly 10 is provided in the avoidance groove 101 ; the cushion block 102 can reduce the excessive impact force of the buffer hole assembly 40 on the upper die assembly 10 .

[0037] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model.

Claims

1. A high-precision punching die, comprising an upper die set and a lower die set, wherein the upper die set and the lower die set are slidably connected via a first guide die set; characterized in that: A punching module is movably arranged between the upper die module and the lower die module; the punching module and the lower die module are slidably connected via a second guide module; the punching module comprises a first clamping plate, a first stop plate fixedly connected to the first clamping plate, and a first dividing block movably connected to the first stop plate via an elastic connecting member; a punch is fixedly arranged on the lower surface of the first clamping plate, and the first stop plate and the first dividing block are both provided with through holes for avoiding the punch; a die cutting edge corresponding to the punch is arranged on the lower die module; during the assembly process of the upper die, the first clamping plate is driven to move toward the first dividing block to drive the punch to punch the product on the upper surface of the die cutting edge.

2. The high-precision punching die according to claim 1, characterized in that: The lower die module is also provided with a pushing assembly to prevent the punch from sticking to the product on the upper surface of the die blade, and a limiting column vertically arranged on one side of the punching module; the limiting column is provided with a sliding groove on the side facing the punching module for inserting one end of the first dividing block and moving longitudinally.

3. The high-precision punching die according to claim 2, characterized in that: The second guide module is located in the middle of the punching module; the elastic connecting member is located between the second guide module and the limiting column.

4. The high-precision punching die according to claim 3, characterized in that: The first guide module and the second guide module are respectively located on two opposite sides of the punching module.

5. The high-precision punching die according to claim 1, characterized in that: The upper die set is provided with an avoidance groove corresponding to the punching die set and for the punching die set to be inserted.

6. The high-precision punching die according to claim 5, characterized in that: A plurality of punches are provided, and the lower end surfaces of the plurality of punches are all in the same plane.

7. The high-precision punching die according to any one of claims 1 to 6, characterized in that: The second guide module group includes a first guide seat arranged in the first material distribution block, a second guide seat arranged in the lower mold module and corresponding to the first guide seat, and a guide column that passes through the first guide seat and the second guide seat in sequence; the guide column is fixedly installed on the lower surface of the first stop plate.

8. The high-precision punching die according to claim 2, characterized in that: The pusher assembly includes an anti-sticking material ejector pin longitudinally arranged in sequence in the lower mold module, a return spring that provides elastic return force for the anti-sticking material ejector pin, and a set screw fixedly connected to the lower end of the lower mold module; one end of the return spring is fixedly connected to the anti-sticking material ejector pin, and the other end is fixedly connected to the set screw; in a natural state, at least a portion of the anti-sticking material ejector pin protrudes from the upper surface of the lower mold module.

9. The high-precision punching die according to claim 1, characterized in that: The elastic connecting member includes a fixed column which passes through the first clamping plate and the first stop plate in sequence and is fixedly connected to the first dividing block, and a buffer spring which is movably mounted on the fixed column; one end of the buffer spring is fixedly connected to the first clamping plate, and the other end is fixedly connected to the first dividing block; when the buffer spring is in a free state, a gap is left between the first stop plate and the first dividing block.

10. The high-precision punching die according to claim 5, characterized in that: A cushion block fixedly connected to the upper die assembly is also provided in the avoidance groove.

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