CN217665478U

CN217665478U - Extrusion upper die capable of being conveniently detached and replaced with die core

Info

Publication number: CN217665478U
Application number: CN202220868235.2U
Authority: CN
Inventors: 林光磊; 张建春; 黄登峰; 许剑银; 王靖安; 徐捷雄
Original assignee: Fujian University of Technology
Current assignee: Fujian University of Technology
Priority date: 2022-04-14
Filing date: 2022-04-14
Publication date: 2022-10-28
Anticipated expiration: 2032-04-14

Abstract

The utility model discloses an extrusion upper die capable of conveniently disassembling and replacing a die core, which comprises an extrusion upper die base of an extrusion die, wherein the center part of the extrusion upper die base is provided with a splicing hole; still include one and go up the mould core, go up the mould core including one can insert the extrusion go up the grafting axle of mould base spliced eye, be provided with the parallel key on the grafting axle, be provided with on the spliced eye with parallel key complex inserting groove, go up the mould core and extrude and go up the mould base and carry out circumference location through the parallel key slot, prevent to go up the mould core and extrude and go up the mould base and take place circumferential direction. The utility model discloses to the extrusion reposition of redundant personnel composite mold that the cost accounts for than big, can remain the die holder of last mould and use repeatedly, only need process the last mould core of making independent module and change just, shortened the production cycle that receives the influence because of the mould core disability problem that extrusion process can not avoid appearing greatly, effectively practiced thrift the mould cost for the enterprise simultaneously, its actual application prospect is wide and utensil realistic meaning.

Description

Extrusion upper die capable of being conveniently detached and replaced with die core

Technical Field

The utility model relates to the field of machining, especially, relate to a mould on extrusion that can convenient dismantlement change mold core.

Background

With the wide application of light metal materials such as aluminum, magnesium alloy and the like in high-end manufacturing fields such as transportation vehicles, digital products and the like, the annual application amount of aluminum and magnesium alloy extrusion materials in the high-end manufacturing fields of China exceeds 1000 million tons, the output value exceeds 3000 million yuan, the cost of an extrusion die accounts for more than 30%, most of the extrusion profiles are produced by adopting a split-flow combined die, the die cores of the upper die are subjected to extrusion forces in different directions in the high-temperature hot extrusion process, deflection easily occurs, the dimension and the shape of the profiles cannot meet the precision requirement and are scrapped, even the die cores are directly scrapped due to breakage, the whole upper die is generally required to be re-processed and manufactured for replacement, the die cost is increased for enterprises, the production delivery cycle is delayed, and the waste of resources such as die steel materials, energy consumption and the like is increased.

Disclosure of Invention

The utility model aims at providing a can convenient mould on extrusion of changing the mold core of dismantling.

In order to realize the purpose of the utility model, the utility model provides a technical scheme is: an extrusion upper die capable of being conveniently disassembled and replaced by a die core comprises an extrusion upper die base of an extrusion die, wherein a plug-in hole is formed in the center of the extrusion upper die base; the upper die core comprises an inserting shaft which can be inserted into an inserting hole of the extrusion upper die base, a flat key is arranged on the inserting shaft, an inserting groove matched with the flat key is formed in the inserting hole, and the upper die core and the extrusion upper die base are circumferentially positioned through the flat key inserting groove to prevent the upper die core and the extrusion upper die base from circumferentially rotating;

the upper die core is axially provided with thread through holes, the position of the upper die base corresponding to the thread through holes in extrusion is provided with corresponding thread holes, bolts inserted into the thread through holes enter the thread through holes, and the upper die core and the upper die base are axially fastened through bolt connection.

The upper die core is axially provided with a thread through hole in a settling type.

The upper surface of the upper die base for extrusion is also provided with a positioning pin.

The beneficial effects of the utility model are that:

the utility model discloses to the extrusion reposition of redundant personnel composite mold that the cost accounts for than big, can remain the die holder of last mould and use repeatedly, only need process the last mould core of making independent module and change just, shortened the production cycle that receives the influence because of the mould core disability problem that extrusion process can not avoid appearing greatly, effectively practiced thrift the mould cost for the enterprise simultaneously, its actual application prospect is wide and utensil realistic meaning.

Drawings

The material object reference figures in the following drawings are only used for understanding the technical scheme of the invention and are not used as limitations;

FIG. 1 is a schematic cross-sectional view of an upper mold of a detachable mold core for extruding a circular aluminum-magnesium alloy tube;

FIG. 2 is a schematic reference diagram of the three-dimensional effect of FIG. 1;

fig. 3 is a three-dimensional reference diagram of an upper die structure of a detachable die core for profiled bars according to another embodiment of the present invention;

FIG. 4 is a schematic view of a finite element analysis reference of FIG. 3.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

Example 1:

FIG. 1 is a schematic cross-sectional view of an upper mold of a detachable mold core for extruding aluminum and magnesium alloy circular tubes, and FIG. 2 is a schematic reference diagram of three-dimensional effect of FIG. 1; as shown in fig. 1 and 2, the upper extrusion die of the present invention comprises an upper extrusion die base 5, wherein the upper extrusion die base is provided with a jack at the center; and a positioning pin 4 is arranged on the upper surface of the extrusion upper die base 5.

The extrusion die comprises an upper die base and is characterized by further comprising an upper die core 2, wherein the upper die core 2 comprises an inserting shaft capable of being inserted into an inserting hole of the extrusion upper die base, a flat key 3 is arranged on the inserting shaft, an inserting groove matched with the flat key 3 is formed in the inserting hole, the upper die core 2 and the extrusion upper die base 5 are circumferentially positioned through the flat key 3 inserting groove, and the upper die core 2 and the extrusion upper die base 5 are prevented from circumferentially rotating;

go up 2 circumference of mould core and arranged subside formula screw thread through-hole, correspond screw thread through-hole position department on the mould base 5 on the extrusion and be provided with corresponding screw hole, enter into the screw hole through the bolt that inserts the screw thread through-hole, make to go up mould core 2 and mould base 5 on the extrusion and carry out the axial fastening through bolted connection.

Example 2:

fig. 3 is a three-dimensional reference diagram of an upper mold structure of a detachable mold core for profiled bars according to another embodiment of the present invention, and fig. 4 is a schematic reference diagram of finite element analysis of fig. 3. With reference to fig. 3 and 4, the other structures of this embodiment are the same as those of embodiment 1, except that the shape of the upper mold core is non-circular, the insertion shaft can also be circular or non-circular, and the upper mold base is provided with a through hole to reduce the weight of the upper mold.

Referring to fig. 4, finite element analysis is performed on the upper die structure of the detachable die core for profiled bars in embodiment 2, even if the upper die base structure is provided with a hollow structure, the connection key positions of the upper die core and the extrusion upper die base main body are subjected to smaller mieses stress values which are smaller than 279.95Mpa and far smaller than the yield strength of the bolt/screw made of the used H13 die steel under the hot extrusion working condition, so that the connection of the design is reliable.

The embodiments described are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

Claims

1. An extrusion upper die capable of being conveniently detached and replaced by a die core comprises an extrusion upper die base of an extrusion die, and is characterized in that a plug-in hole is formed in the center of the extrusion upper die base; still include one and go up the mould core, go up the mould core including one can insert the extrusion and go up the grafting axle of mould base spliced eye, be provided with the parallel key on the grafting axle, be provided with on the spliced eye with parallel key complex inserting groove, go up the mould core and carry out circumference location through the parallel key slot with the extrusion last mould base, prevent to go up the mould core and extrude and go up the mould base and take place circumferential direction.

2. The extrusion upper die capable of being conveniently disassembled and replaced with the die core according to claim 1, characterized in that the upper die core is axially provided with threaded through holes, the position of the extrusion upper die base corresponding to the threaded through holes is provided with corresponding threaded holes, bolts inserted into the threaded through holes enter the threaded holes, and the upper die core and the extrusion upper die base are axially fastened through bolt connection.

3. The upper extrusion die as claimed in claim 2, wherein the axial arrangement of the threaded through holes of the upper die core is of a sinker type.

4. The extrusion upper die capable of being conveniently disassembled and replaced with the die core as claimed in claim 1, wherein a positioning pin is further arranged on the upper surface of the extrusion upper die base.