CN114985683A

CN114985683A - Extrusion die for processing aluminum alloy extrusion piece and processing technology thereof

Info

Publication number: CN114985683A
Application number: CN202210470483.6A
Authority: CN
Inventors: 陈小娜
Original assignee: Guangzhou Hongzhan Hardware Electromechanical Co ltd
Current assignee: Guangzhou Hongzhan Hardware Electromechanical Co ltd
Priority date: 2022-04-28
Filing date: 2022-04-28
Publication date: 2022-09-02

Abstract

The invention relates to the technical field of aluminum alloy processing, and discloses an extrusion die for processing an aluminum alloy extrusion piece and a processing technology thereof. This extrusion die is used in processing of aluminum alloy extruded article, upwards displacement through four relative spouts of draw runner, go up the mould this moment can with take place the separation between the bed die, can drive the rotation of threaded rod through opening main motor, can drive the relative screw rod of thread bush and take place the displacement under the effect of thread bush this moment, and drive and play the board displacement that makes progress, and locking spring resumes deformation gradually and can provide elasticity and hit the board and exert pressure to the bullet, and further drive and play the relative die cavity displacement of board and pop out the metalwork, thereby realized the advantage of convenient drawing of patterns.

Description

Extrusion die for processing aluminum alloy extrusion piece and processing technology thereof

Technical Field

The invention relates to the technical field of aluminum alloy processing, in particular to an extrusion die for processing an aluminum alloy extrusion piece and a processing technology thereof.

Background

An alloy based on aluminum with a certain amount of other alloying elements added is one of light metal materials. In addition to the general characteristics of aluminum, aluminum alloys have certain alloy specific characteristics due to the variety and amount of alloying elements added. The aluminum alloy has the density of 2.63-2.85 g/cm, higher strength (sigma b of 110-650 MPa), specific strength close to that of high alloy steel, specific stiffness higher than that of steel, good casting performance and plastic processing performance, good electric conductivity and heat conductivity, good corrosion resistance and weldability, can be used as a structural material, and has wide application in aerospace, aviation, transportation, construction, electromechanics, lightening and daily necessities. Extrusion is a plastic working method for obtaining the required cross-sectional shape and size by applying external force to the metal blank placed in a container (extrusion cylinder) and making it flow out from a specific die hole, and is mainly used for producing the bars, pipes and profiled bars of stainless steel, nickel-base high-temperature alloy and refractory alloy. In the casting process of the aluminum alloy extrusion part, a die pair is often needed to realize the extrusion molding of the aluminum alloy part, and the die is a tool for making a blank into a product with a specific shape and size under the action of external force. The method is widely applied to blanking, die forging, cold heading, extrusion, powder metallurgy part pressing, pressure casting and the forming processing of compression molding or injection molding of products such as engineering plastics, rubber, ceramics and the like. The die has a specific contour or cavity shape, and the blank can be separated (blanked) according to the contour shape by applying the contour shape with the cutting edge. The blank can obtain a corresponding three-dimensional shape by using the shape of the inner cavity. The mold generally comprises a movable mold and a fixed mold (or a male mold and a female mold), which can be separated or combined. When the two parts are separated, the part is taken out, and when the two parts are folded, the blank is injected into the cavity of the mold for forming. The die is a precise tool, has a complex shape, bears the expansion force of a blank, has higher requirements on structural strength, rigidity, surface hardness, surface roughness and processing precision, and the development level of die production is one of important marks of the mechanical manufacturing level.

The mould that is used for among the prior art in the casting process of aluminum alloy extruded article generally all divide into upper and lower mould, and all offer the die cavity that is used for the aluminium alloy spare fashioned between upper and lower mould, pour into the metal liquid into and cool off the back to it through the inside of mould and lower mould that makes progress when in-service use, carry out the casting that the aluminium alloy can be realized to drawing of patterns again after mould about separating again, but when the in-service use, upper and lower mould is through separating the back, because there is certain adhesion between metalwork and the lower mould in addition, the mode that generally adopts the hammering among the prior art realizes supplementary drawing of patterns operation, but not only can cause the waste of manpower when using the hammering mode can also cause the surface of aluminium alloy spare impaired appearance to make the quality of product appear impaired simultaneously, influence in-service use.

Simultaneously, generally all can be provided with among the prior art and annotate the material pipe and go up the mould between the inside die cavity of mould and mix on the top of last mould, nevertheless because the quantity of annotating the material pipe is one, even slowly pour into when annotating the material, nevertheless can follow the middle part and distribute all around when the area that the area of die cavity generally is greater than the area of annotating the material pipe will lead to metal liquid to get into the die cavity this moment, and then can lead to the inside bubble phenomenon that appears of liquid, can not handle these bubbles among the prior art, cause actual finished product can appear the gas pocket phenomenon and influence product strength.

Generally can separate upper and lower mould in advance and clear up the back rethread upper and lower mould and pour into metal liquid into and cast to inside die cavity in actual casting process, but the terminal surface that upper and lower mould was close to each other when using probably makes the casting in-process and leaves impurity, when upper and lower mould was close to each other and closes, because the existence of impurity can lead to laminating between upper and lower mould and inseparable this moment can lead to inside fashioned metalwork to receive certain influence, make its outward appearance can not reach the anticipated effect influence and experience.

Disclosure of Invention

The invention provides an extrusion die for processing an aluminum alloy extrusion piece and a processing technology thereof, which have the advantages of being convenient for demoulding, reducing air holes generated by a metal piece and preventing the upper die and the lower die from being not tightly closed to influence the metal piece, and solve the problems in the background technology.

The invention provides the following technical scheme: the utility model provides an extrusion die is used in processing of aluminum alloy extruded article, includes mould and bed die, the die cavity has all been seted up to the inside of going up mould and bed die, the bottom movable mounting of bed die has the bullet to hit the board, the bottom fixed mounting of bed die has the mounting bracket, the top fixed mounting of mounting bracket has main motor, the top fixed mounting threaded rod of main motor output shaft, the bottom fixed mounting that the board was hit in the bullet has the thread bush, thread bush and threaded rod threaded connection, the equal angle fixed mounting that the bottom of board was hit in the bullet has locking spring, locking spring's bottom and the top fixed connection of mounting bracket, the fixed intercommunication in top of going up the mould has the entering material chamber.

Preferably, the middle part of the top end of the feeding cavity is fixedly communicated with a feeding pipe, the bottom end of the feeding pipe is fixedly communicated with a mixing pipe located inside the feeding cavity, and the middle part of the inner cavity of the mixing pipe is movably provided with an impeller.

Preferably, the bottom end of the mixing pipe is fixedly communicated with branch pipes located above the cavity at equal angles, the number of the branch pipes is four, and the sliding strips are fixedly mounted on the outer side surface of the upper die, close to the four corners.

Preferably, the lower die lateral surface is close to equal fixed mounting in four corners position has the spout, the lower die passes through spout and the draw runner activity joint of last mould lateral surface, the bottom fixed mounting of spout inner chamber has buffer spring, buffer spring's top fixed mounting has the movable block that is located the spout inside.

Preferably, four equal fixed mounting in top of draw runner has the transfer line, four the top fixed mounting of transfer line has the adjustable shelf, the middle part fixed mounting on adjustable shelf top has linear electric motor, linear electric motor's top fixed mounting has the fixing base.

Preferably, the lateral surface of going up mould and bed die is equipped with the shell, the impartial distance fixed mounting in the left and right sides of shell medial surface has the condenser pipe, the equal fixed mounting in the left and right sides of shell lateral surface has the fan that is located the condenser pipe lateral surface.

Preferably, the equal fixed mounting guide rail in the left and right sides of the one end of following bed die, the right-hand member fixed mounting of guide rail has the limiting plate, the equal activity joint in inside of guide rail has the slider, the top fixed mounting of slider has the fly leaf, the top fixed mounting of fly leaf has the handle, the bottom fixed mounting of fly leaf has the cleaning brush, the bottom of cleaning brush is in on the same horizontal plane with the terminal surface of bed die.

Preferably, two the equal fixed mounting in one end of slider has the reset spring who is located the guide rail medial surface, reset spring's the other end and one side fixed connection of guide rail, the equal angle fixed mounting in bottom of bed die has the supporting leg, the equal fixed mounting in bottom of supporting leg has the sucking disc.

A processing technology of an extrusion die for processing an aluminum alloy extrusion piece comprises the following steps:

s1: the sucking disc through the lower mould bottom at first fixes the device stable subaerial, before the casting operation, can wash the inside of die cavity at first to the mould is close to each other on the control, and accessible pulling handle can stimulate the reset spring of movable block one end when last mould and lower mould are close to each other, and reset spring can be stretched and drive the fly leaf to mould one side displacement this moment, and the cleaning brush that lies in the fly leaf bottom this moment can clean the terminal surface of going up mould and lower mould.

S2: the cooling liquid can be injected into the interior of the feeding cavity by the aid of the feeding pipe during casting, the metal liquid immediately enters the mixing pipe below the mixing pipe and impacts the impeller to drive the impeller to rotate, the metal liquid can be driven to be discharged from the four branch pipes below under the driving of the impeller and simultaneously enters the interior of the cavity from four directions to completely fill the cavity, the cooling liquid can be injected into the interior of the condensation pipe, and the cooling of the upper mold and the lower mold can be accelerated by opening the fan to quickly form metal pieces inside the condensation pipe.

S3: during the drawing of patterns, the accessible is opened linear electric motor and is driven the transfer line of adjustable shelf and bottom and rise and stimulate the relative spout of four draw bars and upwards displace, go up the mould this moment and can take place to separate with between the bed die, can drive the rotation of threaded rod through opening main motor, can drive the relative threaded rod of thread bush and take place the displacement under the effect of thread bush this moment, and drive and strike the board and upwards displace, and locking spring resumes deformation gradually and can provide elasticity and strike the board and exert pressure to the bullet, and further drive and strike the relative die cavity displacement of board and pop out the metalwork, accomplish the drawing of patterns.

The invention has the following beneficial effects:

1. the extrusion die for processing the aluminum alloy extrusion part is characterized in that an impact plate is movably arranged at the bottom end of a lower die, a mounting frame is fixed at the bottom end of the lower die, a main motor is fixed at the top end of the mounting frame, an output shaft of the main motor is connected with a threaded rod and is in threaded sleeve connection with a threaded sleeve at the bottom end of the impact plate, when demoulding operation is needed, a linear motor is started to drive a movable frame and a transmission rod at the bottom end to ascend and pull four sliding strips to move upwards relative to a sliding chute, at the moment, the upper die and the lower die can be separated, the threaded rod can be driven to rotate by starting the main motor, at the moment, the threaded sleeve can be driven to move relative to the threaded rod under the action of the threaded sleeve, the impact plate is driven to move upwards, a locking spring can be gradually restored to deform to provide elastic force to apply pressure to the impact plate, and the impact plate is further driven to move relative to a cavity to eject a metal part, realize the drawing of patterns to realized the advantage of convenient drawing of patterns.

2. This extrusion die is used in processing of aluminum alloy extruded article, there is the feeding chamber through the fixed intercommunication in the top of last mould, and there is the pan feeding pipe at the fixed intercommunication in the top in pan feeding chamber, and the bottom of pan feeding pipe then is fixed with the hybrid tube that is located the feeding intracavity portion, and there is the impeller at the inside movable mounting of hybrid tube, accessible injects the inside in feeding chamber through the pan feeding pipe with metal liquid when the operation is annotated to needs, at this moment in the hybrid tube of metal liquid entering below immediately and impact the impeller and drive the impeller rotation, can drive four branch pipes of metal liquid follow below under the drive of impeller and discharge, and follow the inside that four directions got into the die cavity simultaneously, avoid giving off all around from the middle part, reduce the production of bubble, thereby the advantage that reducible metalwork produced the gas pocket has been realized.

3. This extrusion die is used in processing of aluminum alloy extruded article, one end through at the bed die is fixed with two sets of guide rails, and be fixed with the limiting plate at the right-hand member of guide rail, and then movable mounting has the slider and installs the fly leaf on the top of slider in the inside of guide rail, before the casting operation, can wash the inside of die cavity at first, and the control bed die is close to each other, accessible pulling handle can stimulate the reset spring of movable block one end when last mould and bed die are close to each other, reset spring can be stretched and drive the fly leaf to mould one side displacement this moment, the cleaning brush that is located the fly leaf bottom this moment can clean the terminal surface of last mould and bed die, avoid impurity to influence the closure of mould and bed die, thereby realized can prevent that the closed advantage that does not tightly causes the influence to the metalwork piece of bed die about the lower mould.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the bottom structure of the present invention;

FIG. 3 is an exploded view of the mounting bracket and threaded rod arrangement of the present invention;

FIG. 4 is an exploded view of the movable plate structure of the present invention;

FIG. 5 is an exploded view of the upper and lower dies of the invention;

FIG. 6 is an exploded view of the internal structure of the upper mold of the present invention;

FIG. 7 is an enlarged schematic view of the structure at A in FIG. 3;

fig. 8 is an enlarged schematic view of the structure at B in fig. 4.

In the figure: 1. an upper die; 2. a lower die; 3. a cavity; 4. a feeding cavity; 5. a feeding pipe; 6. a mixing tube; 7. an impeller; 8. a branch pipe; 9. a slide bar; 10. a chute; 11. a movable block; 12. a transmission rod; 13. a movable frame; 14. a linear motor; 15. a fixed seat; 16. a guide rail; 17. a limiting plate; 18. a movable plate; 19. a cleaning brush; 20. a handle; 21. a slider; 22. a return spring; 23. supporting legs; 24. a suction cup; 25. a mounting frame; 26. a main motor; 27. a locking spring; 28. a threaded rod; 29. a threaded sleeve; 30. flick the board; 31. a housing; 32. a condenser tube; 33. a fan; 34. a buffer spring.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, 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 invention.

Referring to fig. 1-8, an extrusion die for processing an aluminum alloy extrusion part comprises an upper die 1 and a lower die 2, wherein cavities 3 are formed in the upper die 1 and the lower die 2, an elastic striking plate 30 is movably mounted at the bottom end of the lower die 2, a mounting frame 25 is fixedly mounted at the bottom end of the lower die 2, a main motor 26 is fixedly mounted at the top end of the mounting frame 25, a threaded rod 28 is fixedly mounted at the top end of an output shaft of the main motor 26, a threaded sleeve 29 is fixedly mounted at the bottom end of the elastic striking plate 30, the threaded sleeve 29 is in threaded connection with the threaded rod 28, a locking spring 27 is fixedly mounted at the bottom end of the elastic striking plate 30 at an equal angle, the bottom end of the locking spring 27 is fixedly connected with the top end of the mounting frame 25, and a feeding cavity 4 is fixedly communicated with the top end of the upper die 1.

Wherein, the fixed intercommunication in middle part on pan feeding chamber 4 top has pan feeding pipe 5, and the fixed intercommunication in bottom of pan feeding pipe 5 has the hybrid tube 6 that is located the inside of pan feeding chamber 4, and the middle part movable mounting in hybrid tube 6 inner chamber has impeller 7, can drive the rotation of the inside impeller 7 of hybrid tube 6 and then realize the dispersion of metal liquid when metal liquid gets into the inside of hybrid tube 6 from pan feeding pipe 5.

Wherein, the bottom of hybrid tube 6 is the fixed intercommunication of angle such as, has the branch pipe 8 that is located the die cavity 3 top, and the quantity of branch pipe 8 is four altogether, goes up 1 lateral surface of mould and is close to equal fixed mounting in the four corners position and has a draw runner 9, can drive four branch pipes 8 of metal liquid from the below under the drive of impeller 7 and discharge to get into the inside of die cavity 3 simultaneously from four directions, make it fill die cavity 3 completely, avoid producing the bubble.

Wherein, 2 lateral surfaces of bed die are close to equal fixed mounting in the four corners position and have spout 10, bed die 2 passes through spout 10 and the 9 activity joint of draw runner of 1 lateral surfaces of last mould, the bottom fixed mounting of 10 inner chambers of spout has buffer spring 34, buffer spring 34's top fixed mounting has the movable block 11 that is located spout 10 inside, buffer spring 34 that is located spout 10 when last mould 1 and bed die 2 separate receives pressure immediately and changes into self deformation and reduces the impact force of mould 1 to bed die 2, make its life-span increase.

Wherein, the equal fixed mounting in top of four draw runners 9 has transfer line 12, the top fixed mounting of four transfer line 12 has adjustable shelf 13, the middle part fixed mounting on adjustable shelf 13 top has linear electric motor 14, linear electric motor 14's top fixed mounting has fixing base 15, the accessible is opened linear electric motor 14 and is driven the transfer line 12 of adjustable shelf 13 and bottom and rise and stimulate the relative spout 10 of four draw runners 9 and upwards displace, go up the mould 1 this moment and can with take place the separation between the bed die 2, fixing base 15 can be used to fixed linear electric motor 14.

Wherein, the lateral surface of going up mould 1 and bed die 2 is equipped with shell 31, and the impartial distance fixed mounting in the left and right sides of shell 31 medial surface has condenser pipe 32, and the equal fixed mounting in the left and right sides of shell 31 lateral surface has the fan 33 that is located condenser pipe 32 lateral surface, can pour into the coolant liquid into the inside of condenser pipe 32 to through opening fan 33 with higher speed the heat dissipation of going up mould 1 and bed die 2 and make inside metalwork rapid prototyping.

The left side and the right side of one end of the lower die 2 are both fixedly provided with guide rails 16, the right end of each guide rail 16 is fixedly provided with a limiting plate 17, the insides of the guide rails 16 are movably clamped with sliders 21, the top end of each slider 21 is fixedly provided with a movable plate 18, the top end of each movable plate 18 is fixedly provided with a handle 20, the bottom end of each movable plate 18 is fixedly provided with a cleaning brush 19, the bottom end of each cleaning brush 19 and the end surface of the lower die 2 are located on the same horizontal plane, when the upper die 1 and the lower die 2 are close to each other, the handle 20 can be pulled to pull a return spring 22 at one end of each movable block 11, the return spring 22 can be stretched and drives the movable plates 18 to move towards one side of the dies, the cleaning brushes 19 at the bottom ends of the movable plates 18 can clean the end surfaces of the upper die 1 and the lower die 2, and the influence of impurities on closing of the upper die 1 and the lower die 2 is avoided.

Wherein, the equal fixed mounting in one end of two sliders 21 has reset spring 22 that is located the 16 medial surfaces of guide rail, reset spring 22's the other end and one side fixed connection of guide rail 16, angle fixed mounting such as the bottom of bed die 2 has supporting leg 23, the equal fixed mounting in bottom of supporting leg 23 has sucking disc 24, the sucking disc 24 of 2 bottoms of accessible bed die before the use is with the device stable subaerial fixed, avoid taking place to empty and cause the damage to the staff.

s1: firstly, the device is stably fixed on the ground through the suction cup 24 at the bottom end of the lower die 2, before the casting operation, the inside of the cavity 3 can be firstly cleaned, the upper die 2 and the lower die 2 are controlled to be close to each other, when the upper die 1 and the lower die 2 are close to each other, the return spring 22 at one end of the movable block 11 can be pulled through the pulling handle 20, at the moment, the return spring 22 can be stretched and drive the movable plate 18 to displace towards one side of the die, and at the moment, the cleaning brush 19 at the bottom end of the movable plate 18 can clean the end faces of the upper die 1 and the lower die 2.

S2: during casting, metal liquid can be injected into the feeding cavity 4 through the feeding pipe 5, at the moment, the metal liquid immediately enters the mixing pipe 6 below and impacts the impeller 7 to drive the impeller 7 to rotate, the metal liquid can be driven to be discharged from the four branch pipes 8 below under the driving of the impeller 7, and simultaneously enters the cavity 3 from four directions, so that the cavity 3 is completely filled with the metal liquid, at the moment, cooling liquid can be injected into the condensation pipe 32, and the fan 33 is started to accelerate the heat dissipation of the upper mold 1 and the lower mold 2 to rapidly form metal pieces inside.

S3: during demolding, the linear motor 14 is started to drive the movable frame 13 and the transmission rod 12 at the bottom end to ascend and pull the four sliding strips 9 to move upwards relative to the sliding groove 10, at the moment, the upper mold 1 can be separated from the lower mold 2, the main motor 26 is started to drive the threaded rod 28 to rotate, at the moment, the threaded sleeve 29 can be driven to move relative to the threaded rod 28 under the action of the threaded sleeve 29, the impact plate 30 is driven to move upwards, the locking spring 27 gradually recovers and deforms to provide elastic force to apply pressure to the impact plate 30, the impact plate 30 is further driven to move relative to the cavity 3, and a metal part is ejected out, so that demolding is completed.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an extrusion die is used in processing of aluminum alloy extruded part, includes mould (1) and bed die (2), its characterized in that: go up die (1) and the inside of bed die (2) and all seted up die cavity (3), the bottom movable mounting of bed die (2) has bullet to hit board (30), the bottom fixed mounting of bed die (2) has mounting bracket (25), the top fixed mounting of mounting bracket (25) has main motor (26), the top fixed mounting threaded rod (28) of main motor (26) output shaft, the bottom fixed mounting that the bullet hits board (30) has thread bush (29), thread bush (29) and threaded rod (28) threaded connection, the equal angle fixed mounting that the bottom of bullet hits board (30) has locking spring (27), the bottom of locking spring (27) and the top fixed connection of mounting bracket (25), the top of going up die (1) is fixed with feeding chamber (4).

2. The extrusion die for extrusion processing of aluminum alloy as set forth in claim 1, wherein: the feeding device is characterized in that a feeding pipe (5) is fixedly communicated with the middle of the top end of the feeding cavity (4), a mixing pipe (6) located inside the feeding cavity (4) is fixedly communicated with the bottom end of the feeding pipe (5), and an impeller (7) is movably arranged in the middle of the inner cavity of the mixing pipe (6).

3. The extrusion die for aluminum alloy extrusion processing as recited in claim 2, wherein: the bottom of hybrid tube (6) is the fixed intercommunication of angle such as the bottom has branch pipe (8) that are located die cavity (3) top, the quantity of branch pipe (8) is four altogether, go up equal fixed mounting in mould (1) lateral surface and have draw runner (9) near the four corners position.

4. The extrusion die for extrusion processing of aluminum alloy as set forth in claim 1, wherein: the utility model discloses a die structure, including lower mould (2), runner (9), buffer spring (34), the top fixed mounting of buffer spring (34) has movable block (11) that are located spout (10) inside, lower mould (2) lateral surface is close to equal fixed mounting in the four corners position has spout (10), lower mould (2) pass through spout (10) and last mould (1) lateral surface draw runner (9) activity joint, the bottom fixed mounting of spout (10) inner chamber.

5. An extrusion die for extrusion processing of aluminum alloy as set forth in claim 3, wherein: four the equal fixed mounting in top of draw runner (9) has transfer line (12), four the top fixed mounting of transfer line (12) has adjustable shelf (13), the middle part fixed mounting on adjustable shelf (13) top has linear electric motor (14), the top fixed mounting of linear electric motor (14) has fixing base (15).

6. The extrusion die for extrusion processing of aluminum alloy as set forth in claim 1, wherein: the lateral surface of going up mould (1) and bed die (2) is equipped with shell (31), the impartial distance fixed mounting in the left and right sides of shell (31) medial surface has condenser pipe (32), the equal fixed mounting in the left and right sides of shell (31) lateral surface has fan (33) that are located condenser pipe (32) lateral surface.

7. The extrusion die for extrusion processing of aluminum alloy as set forth in claim 1, wherein: the equal fixed mounting guide rail in the left and right sides (16) of the one end of bed die (2), the right-hand member fixed mounting of guide rail (16) has limiting plate (17), the equal activity joint in inside of guide rail (16) has slider (21), the top fixed mounting of slider (21) has fly leaf (18), the top fixed mounting of fly leaf (18) has handle (20), the bottom fixed mounting of fly leaf (18) has cleaning brush (19), the bottom of cleaning brush (19) is in on the same horizontal plane with the terminal surface of bed die (2).

8. The extrusion die for aluminum alloy extrusion processing as recited in claim 7, wherein: two the equal fixed mounting in one end of slider (21) has reset spring (22) that are located guide rail (16) medial surface, one side fixed connection of the other end of reset spring (22) and guide rail (16), angle fixed mounting such as the bottom of bed die (2) has supporting leg (23), the equal fixed mounting in bottom of supporting leg (23) has sucking disc (24).

9. A process for manufacturing an extrusion die for aluminum alloy extrusion processing as claimed in any one of claims 1 to 8, wherein: comprises the following steps:

s1: the device is stably fixed on the ground through a sucker (24) at the bottom end of a lower die (2), before casting operation, the inside of a cavity (3) can be cleaned firstly, the upper die and the lower die (2) are controlled to be close to each other, when the upper die (1) and the lower die (2) are close to each other, a reset spring (22) at one end of a movable block (11) can be pulled through a pulling handle (20), the reset spring (22) can be stretched and drives a movable plate (18) to move to one side of the die, and a cleaning brush (19) at the bottom end of the movable plate (18) can clean the end faces of the upper die (1) and the lower die (2).

S2: the metal liquid can be injected into the feeding cavity (4) through the feeding pipe (5) during casting, at the moment, the metal liquid immediately enters the mixing pipe (6) below and impacts the impeller (7) to drive the impeller (7) to rotate, the metal liquid can be driven to be discharged from the four branch pipes (8) below under the driving of the impeller (7), and simultaneously enters the cavity (3) from four directions, so that the cavity (3) is completely filled with the metal liquid, at the moment, the cooling liquid can be injected into the interior of the condensation pipe (32), and the fan (33) is started to accelerate the heat dissipation of the upper mold (1) and the lower mold (2) to quickly form the metal piece inside.

S3: during demoulding, the linear motor (14) is started to drive the movable frame (13) and the transmission rod (12) at the bottom end to ascend and pull the four sliding strips (9) to move upwards relative to the sliding groove (10), at the moment, the upper die (1) can be separated from the lower die (2), the main motor (26) is started to drive the threaded rod (28) to rotate, at the moment, the threaded sleeve (29) can be driven to move relative to the threaded rod (28) under the action of the threaded sleeve (29), the impact plate (30) is driven to move upwards, the locking spring (27) gradually recovers to deform to provide elastic force to apply pressure to the impact plate (30), the impact plate (30) is further driven to move relative to the cavity (3) to eject the metal piece, and demoulding is completed.