CN218425149U

CN218425149U - Rolling extrusion forming die

Info

Publication number: CN218425149U
Application number: CN202222169328.9U
Authority: CN
Inventors: 饶涛
Original assignee: Chongqing Bishan Maoyu Machinery Manufacturing Co ltd
Current assignee: Chongqing Bishan Maoyu Machinery Manufacturing Co ltd
Priority date: 2022-08-17
Filing date: 2022-08-17
Publication date: 2023-02-03
Anticipated expiration: 2032-08-17

Abstract

The utility model relates to the technical field of dies, in particular to a rolling extrusion forming die, which comprises a rotating shaft, a left die and a right die, wherein the left die and the right die are sleeved on the rotating shaft and respectively comprise an extrusion part and a fixed part, the end part of each extrusion part is sunken into an extrusion cavity, and a lug is arranged on the cavity wall of the extrusion cavity; the center of each fixing part is provided with a trepanning communicated with the extrusion cavity, the trepanning is matched with a rotating shaft for fixing the left die and the right die, a shaft shoulder for positioning is arranged on the rotating shaft, and a fastening piece for fastening the left die and the right die is further arranged at the end part of the rotating shaft. The utility model discloses can solve the blank can't be fast with its problem of taking out from the mould after extrusion, and can not additionally increase the human cost of company.

Description

Rolling extrusion forming die

Technical Field

The utility model relates to the technical field of mold, specifically be a roll extrusion forming die.

Background

The metal extrusion molding is a molding process of applying a certain pressure on a metal blank in a mold cavity by using an extruder to force the blank material to generate plastic flow, filling a reserved cavity or extruding the blank material from a specific die hole in the cavity so as to obtain a required specific shape and section size. Because when the special-shaped piece is extruded, the extruded metal is easily clamped in a cavity of the die and can be taken down after the die is completely disassembled by people, so that a forming line of the die needs to be stopped intermittently, the forming production work of the special-shaped piece is delayed, and the production efficiency of a company is reduced. Patent document CN213103841U discloses a special-shaped metal material extrusion die, which divides a lower die core into a sleeve seat and a replacement core, then detaches the replacement core from the sleeve seat, and then installs a new replacement core, thereby ensuring that the production work of special-shaped parts is not delayed.

However, the above-mentioned techniques have the following technical problems:

1. a plurality of replacement cores need to be produced when the extrusion die is produced, and the production cost of a company is additionally increased;

2. in the production process of the same batch of products, when each formed workpiece is taken down, the whole replacement core is taken down together with the workpiece, and then a new replacement core is loaded for continuous processing, although the processing continuity is improved to a certain extent; however, workers are still required to take out the workpieces in the replacement cores, and the problem that the extruded workpieces are clamped in the cavities of the dies and are not easy to take out quickly is still solved;

3. a station is required to be added for removing the workpiece in the replacement core, which increases labor cost.

SUMMERY OF THE UTILITY MODEL

The utility model provides a roll extrusion forming die can solve the blank and can't follow the problem that takes out its mould fast after extrusion, and can not additionally increase company's human cost.

The application provides the following technical scheme:

a roll extrusion forming die comprises a rotating shaft, a left die and a right die, wherein the left die and the right die are sleeved on the rotating shaft and respectively comprise an extrusion part and a fixing part, the end part of each extrusion part is sunken into an extrusion cavity, and a convex block is arranged on the cavity wall of each extrusion cavity; the center of each fixing part is provided with a trepanning communicated with the extrusion cavity, a shaft shoulder used for positioning is arranged on the rotating shaft, and a fastening piece used for fastening the left die and the right die is further arranged at the end of the rotating shaft.

Has the advantages that: when the die is used, the right die, the blank and the left die are sequentially arranged on the rotating shaft, the sleeve hole of the left die is matched with the sleeve hole of the right die and the rotating shaft, the shaft shoulder on the rotating shaft axially positions the left die and the right die, and the left die and the right die are finally fixed through the fastener; when the forming die is taken down, the forming die is divided into a left half die and a right half die, when one half die is taken down, the formed workpiece can be pulled by the die to be loosened, and at the moment, most of the workpiece is separated from the die, so that the workpiece can be taken out easily.

1. When the die is used, the left die can be quickly detached from the rotating shaft only by loosening the fastening piece, a machined workpiece is taken down from one end of the rotating shaft, another blank to be machined is sleeved in the die after the workpiece is taken down, and then the left die is fastened through the fastening piece; compared with the prior art, the replacement core does not need to be taken out of the sleeve seat, and then the workpiece in the replacement core is manually taken down, so that the labor cost is saved, and the replacement core is convenient to disassemble and assemble;

2. the forming die is divided into a left die and a right die, a workpiece is placed between the two dies, and a certain extrusion force is applied to extrude the two end faces of the blank into a required specific shape, so that the operation is simple and convenient, a plurality of replacement cores are not required to be produced, and the production cost of a company is saved;

3. the forming die can be used for extrusion forming, and when the middle part of a blank needs to be rolled, the left die and the right die can also serve as positioning clamps of the blank; when the blank needs to be rolled, the rotating shaft drives the left die, the right die and the blank to rotate, extrusion force is applied to the left die after rolling is completed, the left die and the right die are used for carrying out extrusion forming on two end faces of the blank, and the problem that the blank needs to be disassembled and assembled for many times when the blank is extruded after being rolled is solved.

Further, the left die and the right die are both cylindrical, and the outer diameters of the fixing parts of the left die and the right die are smaller than the outer diameter of the extruding part.

The benefits of this arrangement are: the material is saved, and the cost is reduced; the weight of the left and right molds is reduced, thereby reducing the power of the rotating shaft during rotation.

Furthermore, through holes for air flowing are further formed in the left die and the right die.

The vacuum in the extrusion cavities of the left and right dies can be avoided during extrusion, so that the plastic deformation of the blank is influenced.

Further, the left die and the right die are connected with the rotating shaft key.

The radial fixation of the left and right dies is realized through key connection, so that the relative movement of the left and right dies and the rotating shaft is avoided during roll extrusion operation, and the forming shape of a blank is influenced.

Further, the fastener includes a C-washer and a nut.

The fastener adopts the C-shaped gasket and the nut and has the advantages that: the left die can be taken down from the rotating shaft or put in the rotating shaft only by loosening and tightening the nut, and the rapid disassembly and assembly are convenient.

Furthermore, the fastener is pneumatic cylinder and sleeve, and the piston rod and the sleeve of pneumatic cylinder are rotated and are connected, and the sleeve is connected with the left end face of left mould.

Drawings

Fig. 1 is a schematic structural view of the left mold of the present invention;

FIG. 2 is a schematic structural view of the right mold of the present invention;

fig. 3 is a schematic view of an assembly structure according to a first embodiment of the present invention;

fig. 4 is an assembly structure diagram of a second embodiment of the present invention;

fig. 5 shows a special-shaped workpiece extruded by the die.

Detailed Description

The following is further detailed by way of specific embodiments:

the reference numbers in the drawings of the specification include: the die comprises a left die 1, a first extrusion part 101, a first fixing part 102, a right die 2, a second extrusion part 201, a second fixing part 202, a bump 3, a rotating shaft 4, a flat key 5, a C-shaped gasket 6, a nut 7, a blank 8, a workpiece 9, a hydraulic cylinder 10 and a sleeve 11.

Example one

As shown in fig. 1 and fig. 2, a roll extrusion forming mold comprises a rotating shaft 4, and a left mold 1 and a right mold 2 which are used for being sleeved on the rotating shaft 4, wherein the left mold 1 comprises a first extrusion part 101 and a first fixing part 102, the right mold 2 comprises a second extrusion part 201 and a second fixing part 202, the left mold 1 and the right mold 2 are both cylindrical, and the outer diameters of the fixing parts of the left mold and the right mold are smaller than the outer diameter of the extrusion part; the tip of the first extrusion portion 101 of left mould 1 and the second extrusion portion 201 of right mould 2 all caves in into the extrusion chamber, and the extrusion chamber is the ring channel, still is provided with lug 3 in the ring channel, and lug 3 is used for extruding the both ends face of blank 8 into the recess, still is provided with the through-hole that is used for the air flow on left mould 1 and the right mould 2, avoids forming the vacuum in the extrusion chamber of left mould 1 and right mould 2 when the extrusion to influence the plastic deformation of blank 8.

The first fixing part 102 and the second fixing part 202 are both provided with sleeve holes, the first fixing part 102 and the second fixing part 202 are sleeved on the rotating shaft 4 through the sleeve holes, the rotating shaft 4 is provided with a shaft shoulder for axial positioning, and meanwhile, in order to radially position the left die 1 and the right die 2, the left die 1, the right die 2 and the rotating shaft 4 are both connected by adopting a flat key 5; the tip of rotation axis 4 still is provided with the fastener, the fastener includes C shape gasket 6 and nut 7, nut 7 and 4 threaded connection of rotation axis, C shape gasket 6 sets up between nut 7 and left mould 1, and C shape gasket 6 is equally big with the left end face of left mould 1, when extrusion blank 8, apply an extrusion force to C shape gasket 6, C shape gasket 6 can avoid left mould 1 directly to receive the contact extrusion to produce wearing and tearing, the lifting surface area of extrusion force has been increased simultaneously, make left mould 1 atress more even.

When the die is used specifically, as shown in fig. 3, firstly, a right die 2, a blank 8 and a left die 1 are assembled on a rotating shaft 4 in sequence, the right die 2 and the left die 1 are connected with the rotating shaft 4 through a flat key 5, and meanwhile, the right die 2 is abutted against a shaft shoulder of the rotating shaft 4 to fix the right die 2 in the axial direction and the radial direction, and the left die 1 has a certain moving distance in the axial direction; then sleeving a C-shaped gasket 6, screwing a nut 7, applying an extrusion force to the left die 1, pushing the left die 1 to move rightwards, and thus carrying out extrusion forming on a blank 8 between the left die 1 and the right die 2 to obtain a special-shaped workpiece 9 shown in fig. 5; and then loosening the nut 7, removing the C-shaped gasket 6, taking the left die 1 down, taking the formed workpiece 9 out, then sleeving another blank 8 to be processed, sequentially loading the left die 1 and the C-shaped gasket 6, and finally tightening the nut 7 to prevent the left die 1 from sliding leftwards, so that the blank 8 is quickly disassembled and assembled.

Example two

The difference between the present embodiment and the first embodiment is that, as shown in fig. 4, the fastening members are a hydraulic cylinder 10 and a sleeve 11, a piston rod of the hydraulic cylinder 10 is rotatably connected with the sleeve 11, and the sleeve 11 is connected with the left end face of the left mold 1. During rolling, a piston rod of the hydraulic cylinder 10 feeds rightwards for a certain distance, so that a bump 3 in an extrusion cavity of the left die 1 is abutted against a blank 8 for positioning, and the left die 1 is prevented from moving leftwards and sliding out of the rotating shaft 4; when extrusion processing is carried out, a piston rod of the hydraulic cylinder 10 pushes the sleeve 11 to extrude the left die 1, so that the left die 1 moves rightwards to extrude the blank 8; after extrusion forming, a piston rod of the hydraulic cylinder 10 retracts, the left die 1 is pulled to move leftwards to be separated from the rotating shaft 4, the workpiece 9 is pulled when the left die 1 moves leftwards, the workpiece 9 is loosened, and therefore workers can take out the workpiece 9 conveniently and quickly.

The above are merely examples of the present invention, and the present invention is not limited to the field related to the embodiments, and general knowledge of known specific structures and characteristics in the schemes is not described herein. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, and these should also be considered as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be defined by the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims

1. A roll extrusion forming die is characterized by comprising a rotating shaft, a left die and a right die, wherein the left die and the right die are sleeved on the rotating shaft and comprise extrusion parts and fixing parts; each fixed part's center all is provided with the trepanning with the extrusion chamber intercommunication, and is provided with the shaft shoulder that is used for the location on the rotation axis, the tip of rotation axis still is provided with the fastener that is used for fastening left and right mould.

2. The roll extrusion molding die as claimed in claim 1, wherein: the left die and the right die are both cylindrical, and the outer diameters of the fixing parts of the left die and the right die are smaller than the outer diameter of the extrusion part.

3. The roll extrusion molding die as claimed in claim 2, wherein: and through holes for air flowing are further formed in the left die and the right die.

4. A roll extrusion molding die as set forth in claim 3, wherein: and the left die and the right die are connected with the rotating shaft key.

5. The roll extrusion molding die as claimed in claim 1, wherein: the fastener includes a C-shaped washer and a nut.

6. The roll extrusion molding die as claimed in claim 1, wherein: the fastener is a hydraulic cylinder and a sleeve, a piston rod of the hydraulic cylinder is rotatably connected with the sleeve, and the sleeve is connected with the left end face of the left die.