Quick-change punch structure
The quick-change punch design, which combines dovetail and shoulder structures, solves the problems of complex connection and difficult disassembly of existing forging die punches, enabling rapid assembly and disassembly and accurate positioning, thereby improving production efficiency and connection reliability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU ZHONGGONG NEW ENERGY TECHNOLOGY CO LTD
- Filing Date
- 2025-04-02
- Publication Date
- 2026-05-08
AI Technical Summary
The existing connection method of forging die punch has problems such as thread wear, stress concentration at the thread connection, large space occupation by the thread length, easy loosening of the thread, complicated installation and disassembly, easy damage of the pin, and high precision requirements of the connection part. As a result, problems such as thread breakage, pin deformation that cannot be disassembled, and difficulty in mold repair and installation occur in actual production.
The quick-change punch design, which combines a dovetail structure and a shoulder structure, allows for rapid assembly and disassembly and accurate positioning through sliding along the groove, combined with clamping wedges and bolt connections.
This invention achieves a simple, quick, and accurate connection of forging punches, solving the problems of complex connections and difficult disassembly in existing technologies, and improving production efficiency and connection reliability.
Smart Images
Figure CN224209054U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to forging technology, specifically to a quick-change punch structure. Background Technology
[0002] Forging die punches are key die components used in the hot working of metals. During the forging process, the punch comes into direct contact with the metal being processed, and by applying pressure, it causes the metal material to undergo plastic deformation, thereby obtaining a forging of the desired shape and size.
[0003] Forging punches are used under harsh working conditions of high temperature, high pressure, and severe wear, and are generally required to be replaceable and repairable for reuse. Removable and replaceable connection methods for forging punches include threaded connections, pin connections, and bolt connections with shoulder flanges. While these connection methods are widely used in actual production, they still have certain shortcomings.
[0004] 1. Threaded connections: Although they offer advantages such as convenient rotational installation and disassembly, good connection tightness, and strong dimensional adaptability, they also have unavoidable problems such as thread wear and seizure, stress concentration at the threaded connection, large space occupation by thread length, easy loosening of threads, and high requirements for thread fit accuracy. In actual production, situations such as thread repair, thread seizure, and breakage at the threaded connection when the punch is under uneven load occur.
[0005] 2. Pin connection: While offering advantages such as a strong and reliable connection, good centering, and simple structure, it also has drawbacks including complex installation and disassembly, easy damage to the pins, and high precision requirements for the connection parts. In actual production, situations frequently arise where the pins are deformed and cannot be disassembled, requiring mold repair for proper installation.
[0006] 3. Shoulder flange bolt connection: While offering advantages such as high positioning accuracy, structural stability, and reusability, it also suffers from drawbacks including complex structure, large space occupation, high material requirements, and difficulty in installation and adjustment. In actual production, it is only used for mold manufacturing of small and medium-sized products. Utility Model Content
[0007] In view of the above problems, this utility model proposes a quick-change punch structure.
[0008] The technical solution of this utility model:
[0009] A quick-change punch structure includes a fixed base plate and a positioning plate. A sliding groove is provided on the fixed base plate. A forged punch is installed on the positioning plate. The positioning plate with the forged punch is placed in the sliding groove, is confined within the sliding groove, and slides along the sliding groove until it reaches a position A, at which point the positioning plate is fixed.
[0010] Further refining the above technical solution, at position A, the positioning plate and the fixed base plate are fitted together by a dovetail structure to ensure sufficient strength to resist the draft force of the forging punch.
[0011] To further refine the above technical solution, the forging punch is set inside the positioning plate, and it is fitted with the positioning plate through a shoulder structure, with its root flush with the bottom surface of the positioning plate.
[0012] To further refine the above technical solution, one end of the slide is open, and the positioning plate with the forging punch installed enters and exits the slide through the opening.
[0013] Further refining the above technical solution, the quick-change punch structure also includes a clamping wedge block, which is installed on a fixed base plate; position A is the innermost part of the slide groove, and the front end of the positioning plate is pressed against the bottom of the fixed base plate and the rear end is pressed against the bottom of the clamping wedge block.
[0014] Further refining the above technical solution, the contact surface between the clamping wedge and the positioning plate is an inclined surface.
[0015] Further refining the above technical solution, the clamping wedge is embedded in the fixed base plate and connected to the fixed base plate by bolts; the bolts include fixing bolts and ejector bolts. The ejector bolts are designed to facilitate the disassembly of the clamping wedge; after the fixing bolts are loosened, the clamping wedge is ejected by the counter-pushing action of the ejector bolts.
[0016] To further refine the above technical solution, a boss is provided at the lower part of the clamping wedge block, and the boss is in clearance fit with a groove provided on the fixed base plate.
[0017] Further refining the above technical solution, the mating surface between the forging punch and the positioning plate is provided with a pin hole, and a pin is provided in the pin hole. The pin is used to lock the forging punch and the positioning plate, thereby forming a rotation-stopping limit for the forging punch.
[0018] The advantages of this utility model are that it has a reasonable design, simple structure, quick and convenient assembly and disassembly, and accurate positioning. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the quick-change punch structure.
[0020] Figure 2 This is a schematic diagram (cross-section) of the quick-change punch structure.
[0021] Figure 3 This is a schematic diagram of the fixed base plate.
[0022] Figure 4 This is a schematic diagram of the positioning plate.
[0023] Figure 5 Schematic diagram of the clamping wedge.
[0024] Figure 6 This is a schematic diagram of a forging punch.
[0025] The figure shows a fixed base plate 1, a sliding groove 1-1, an opening 1-2, a positioning plate 2, a clamping wedge 3, a boss 3-1, a forging punch 4, and a bolt 5. Detailed Implementation
[0026] like Figures 1-5 As shown, a quick-change punch structure includes a fixed base plate 1; the quick-change punch structure also includes a positioning plate 2 and a clamping wedge 3. A sliding groove 1-1 is provided on the fixed base plate 1, and one end of the sliding groove 1-1 is open 1-2.
[0027] Install the forging punch 4 on the positioning plate 2; place the positioning plate 2 with the forging punch 4 installed in the slide groove 1-1 through the opening 1-2, so that it is restricted in the slide groove 1-1 and slides along the slide groove 1-1 until it reaches the innermost part. At this time, the positioning plate 2 and the fixed base plate 1 cooperate through the dovetail structure, and install the clamping wedge 3 on the fixed base plate 1 so that the front part of the positioning plate 2 is pressed under the fixed base plate 1 and the rear part is pressed under the clamping wedge 3, thus fixing the positioning plate 2.
[0028] The forging punch 4 is set inside the positioning plate 2, and it is fitted with the positioning plate 2 through a shoulder structure, with its root flush with the bottom surface of the positioning plate 2.
[0029] The clamping wedge 3 is embedded in the fixed base plate 1, and is connected to the fixed base plate 1 by bolts 5; the bolts 5 include fixing bolts and ejector bolts.
[0030] The lower part of the clamping wedge block 3 is provided with a boss 3-1, which is in clearance fit with the groove provided on the fixed base plate 1.
[0031] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.
Claims
1. A quick-change punch structure, the quick-change punch structure comprising a fixed base plate; characterized in that, The quick-change punch structure also includes a positioning plate, and a sliding groove is provided on the fixed base plate; A forging punch is installed on a positioning plate; the positioning plate with the forging punch is placed in a slide groove, which restricts it and slides along the slide groove until it reaches a position A, at which point the positioning plate is fixed.
2. The quick-change punch structure according to claim 1, characterized in that, At position A, the positioning plate and the fixed base plate are fitted together by a dovetail structure.
3. The quick-change punch structure according to claim 1, characterized in that, The forging punch is set inside the positioning plate, and it is fitted with the positioning plate through a shoulder structure, with its root flush with the bottom surface of the positioning plate.
4. The quick-change punch structure according to claim 1, characterized in that, The chute is open at one end, and the positioning plate with the forging punch installed enters and exits the chute through the opening.
5. The quick-change punch structure according to claim 4, characterized in that, The quick-change punch structure also includes a clamping wedge block, which is mounted on a fixed base plate; Position A is the innermost part of the slide groove, and the front end of the positioning plate is pressed against the bottom plate and the rear end is pressed against the wedge block.
6. The quick-change punch structure according to claim 5, characterized in that, The contact surface between the positioning plate and the fixed base plate is an inclined surface, and the contact surface between the positioning plate and the clamping wedge is an inclined surface.
7. A quick-change punch structure according to claim 5, characterized in that, The clamping wedge is embedded in the fixed base plate and is connected to the fixed base plate by bolts; the bolts include fixing bolts and ejector bolts.
8. A quick-change punch structure according to claim 7, characterized in that, The lower part of the clamping wedge is provided with a boss, which is in clearance fit with a groove provided on the fixed base plate.
9. A quick-change punch structure according to claim 3, characterized in that, The mating surface between the forging punch and the positioning plate is provided with a pin hole, and a pin is provided in the pin hole. The pin is used to lock the forging punch and the positioning plate, thereby forming a rotation-stopping limit for the forging punch.