CN-224209054-U - Quick-change punch structure

Abstract

The utility model relates to a quick-change punch structure which comprises a fixed bottom plate and a positioning plate, wherein a chute is arranged on the fixed bottom plate, a forging punch is arranged on the positioning plate, and the positioning plate provided with the forging punch is arranged in the chute and limited in the chute and slides along the chute to a position A, so that the positioning plate is fixed. The disassembly and the assembly are quick and convenient, and the positioning is accurate.

Inventors

• ZHANG LEIYU

Assignees

• 江苏众工新能源科技有限公司

Dates

Publication Date

20260508

Application Date

20250402

Claims (9)

1. 1. The quick-change punch structure comprises a fixed bottom plate, and is characterized by further comprising a positioning plate, wherein a chute is arranged on the fixed bottom plate; The positioning plate with the forging punch is arranged in the chute and limited in the chute and slides along the chute to a position, namely a position A, so as to fix the positioning plate.
2. 2. A quick change ram structure as claimed in claim 1 wherein the locating plate is engaged with the mounting base plate at location a by a dovetail arrangement.
3. 3. A quick change punch arrangement as claimed in claim 1, wherein the forging punch is disposed within the locating plate and is engaged with the locating plate by a shoulder formation and the root is flush with the bottom surface of the locating plate.
4. 4. The quick change ram structure of claim 1, wherein the chute is open at one end and the positioning plate with the ram mounted thereon is moved into and out of the chute through the opening.
5. 5. The quick change punch structure of claim 4, further comprising a hold down wedge mounted on the fixed base plate; The position A is the innermost part of the chute, and the front end of the positioning plate is tightly pressed below the fixed bottom plate, and the rear end of the positioning plate is tightly pressed below the pressing wedge block.
6. 6. The quick change punch structure of claim 5, wherein the contact surface of the positioning plate and the fixed bottom plate is an inclined surface, and the contact surface of the positioning plate and the pressing wedge is an inclined surface.
7. 7. The quick change punch structure of claim 5, wherein the compression wedge is embedded in the fixed bottom plate and is connected with the fixed bottom plate through bolts, and the bolts comprise fixed bolts and ejection bolts.
8. 8. The quick change punch structure of claim 7, wherein the compression wedge is provided with a boss at a lower portion thereof, the boss being in clearance fit with a recess provided in the fixed base plate.
9. 9. A quick change punch structure according to claim 3, wherein the mating surface of the forging punch and the locating plate is provided with a pin hole, a pin is arranged in the pin hole, and the forging punch and the locating plate are pinned through the pin to form a rotation stopping limit of the forging punch.

Description

Quick-change punch structure Technical Field The utility model relates to forging technology, in particular to a quick-change punch structure. Background Forging die punches are key die components for metal hot working. In the forging process, the punch is in direct contact with the metal to be worked, and the metal material is plastically deformed by applying pressure, thereby obtaining a forging of a desired shape and size. Forging punches are used under severe operating conditions of high temperature and high pressure, severe wear, and generally require replacement and repair for reuse. The connection mode of the detachable replacement of the forging punch comprises threaded connection, pin connection, flange screw connection with shoulder and the like. The above-mentioned connection methods are widely used in actual production, but have certain disadvantages. 1. The threaded connection has the advantages of convenient rotation installation and disassembly, good connection tightness, strong dimensional adaptability and the like, but has the unavoidable problems of abrasion and engagement of threads, stress concentration at the threaded connection, large occupied space of the length of the threads, easy loosening of the threads, high requirement on the precision of threaded fit and the like. In actual production, the conditions of thread trimming, thread engagement, thread connection fracture when the punch is in unbalanced load and the like occur. 2. The pin connection has the advantages of firm and reliable connection, good centering, simple structure and the like, but also has the defects of complex installation and disassembly, easy damage of the pin, high requirement on the precision of the connection part and the like. In actual production, the pin deformation often exists, and the pin cannot be detached, the die is repaired, matched and installed, and the like. 3. The flange screw connection with the shoulder has the advantages of high positioning precision, stable structure, reusability and the like, but also has the defects of complex structure, large occupied space, high requirement on materials, high installation and adjustment difficulty and the like. The method is only used for manufacturing the mould of the medium and small products in actual production. Disclosure of utility model In view of the above, the present utility model provides a quick-change punch structure. The technical scheme of the utility model is as follows: The quick-change punch structure comprises a fixed bottom plate, a positioning plate and a forging punch, wherein a chute is formed in the fixed bottom plate, the forging punch is installed on the positioning plate, the positioning plate provided with the forging punch is arranged in the chute and limited in the chute and slides along the chute, and the positioning plate is fixed by sliding to a position A. According to the technical scheme, the positioning plate is matched with the fixed bottom plate at the position A through the dovetail structure, so that the die drawing force of the forging punch is guaranteed to be strong enough. According to the technical scheme, the forging punch is arranged in the locating plate and is matched with the locating plate through a shoulder structure, and the root of the forging punch is flush with the bottom surface of the locating plate. According to the technical scheme, the sliding groove is further refined, one end of the sliding groove is opened, and the positioning plate provided with the forging punch is provided with the opening to enter and exit the sliding groove. According to the technical scheme, the quick-change punch structure further comprises a compression wedge block, the compression wedge block is arranged on the fixed bottom plate, the position A is the innermost part of the sliding groove, and the front end of the positioning plate is compressed below the fixed bottom plate and the rear end of the positioning plate is compressed below the compression wedge block. According to the technical scheme, the contact surface of the pressing wedge block and the positioning plate is an inclined surface. According to the technical scheme, the pressing wedge block is embedded in the fixed bottom plate and is connected with the fixed bottom plate through bolts, and the bolts comprise fixing bolts and ejection bolts. The design of the ejection bolt is convenient for disassembling the compression wedge block, and after the fixing bolt is loosened, the compression wedge block is ejected out by means of the anti-ejection effect of the ejection bolt. According to the technical scheme, the lower part of the pressing wedge block is provided with the boss, and the boss is in clearance fit with the groove arranged on the fixed bottom plate. According to the technical scheme, the matching surface of the forging punch and the positioning plate is provided with the pin hole, the pin is arranged in the pin hole, and the forging punch and t