CN113649507B

CN113649507B - Die forging forming device for hot-extrusion composite precision part

Info

Publication number: CN113649507B
Application number: CN202111018046.2A
Authority: CN
Inventors: 黄世宽
Original assignee: Nanjing Ourui Machinery Forging Co ltd
Current assignee: Nanjing Ourui Machinery Forging Co ltd
Priority date: 2021-09-01
Filing date: 2021-09-01
Publication date: 2022-06-03
Anticipated expiration: 2041-09-01
Also published as: CN113649507A

Abstract

The invention relates to a die forging forming device for a hot extrusion composite precision part, which comprises a bottom plate, a lower die, a heat preservation mechanism, a keel frame, a hydraulic cylinder, an adjusting mechanism and an upper die, wherein the lower die is arranged in the middle of the bottom plate, the heat preservation mechanism is symmetrically arranged at the left end and the right end of the lower die, the keel frame is arranged on the bottom plate, the hydraulic cylinder is arranged at the upper end of the keel frame, the adjusting mechanism is arranged at the ejection end of the hydraulic cylinder, and the upper die is arranged in the adjusting mechanism. The invention can solve the problems that the heated blank is difficult to put into the existing lower die quickly and accurately due to high temperature, the temperature of the blank is easy to reduce due to the slow down of the putting speed, the deformation resistance of the blank in the die forging process is increased, the risk of the blank cracking is increased, the blank is completely embedded into a die forging cavity after the die forging is finished, the forged piece part embedded into the lower die is difficult to separate from the lower die after the upper die is lifted, and the damage to the surface of the forged piece is easy to cause due to forced taking out.

Description

Die forging forming device for hot-extrusion composite precision part

Technical Field

The invention relates to the technical field related to high-temperature die forging, in particular to a die forging forming device for a hot-extrusion composite precision part.

Background

The die forging is a forging method in which a blank is formed by a die on a dedicated die forging apparatus to obtain a forged part. The forging produced by the method has the advantages of accurate size, small machining allowance, complex structure, high production efficiency of the die forging method, low labor intensity, capability of forging the forging with complex shape and suitability for batch production.

The die forging is a pressure processing method that a metal blank is placed in a cavity with a certain shape, and the blank is pressed to deform, when the blank is forged, the blank needs to be placed in a heating furnace for heating firstly, then an operator places the heated blank in the cavity of a die through a material clamping machine, and then forges the blank through the die, but in actual operation, the following problems are often encountered:

1. the die comprises an upper die and a lower die, and the heated blank is difficult to quickly and accurately put into the existing lower die due to high temperature, and the temperature of the blank is easily reduced due to the reduction of the putting speed, so that the temperature is lower than the set initial temperature, the deformation resistance of the blank in the die forging process is increased, the risk of blank cracking is increased, and the forging quality of the blank is reduced;

2. after the die forging is finished, the blank is completely embedded into the die forging cavity, and after the upper die rises, the forged piece part embedded into the lower die is difficult to separate from the lower die, so that the forged piece part is easily damaged when being forcibly taken out.

Disclosure of Invention

Technical scheme (I)

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a compound accurate piece die forging forming device of hot extrusion, includes bottom plate, lower mould, heat preservation mechanism, keel frame, pneumatic cylinder, adjustment mechanism, goes up the mould, and the mid-mounting of bottom plate has the lower mould, and heat preservation mechanism is installed to both ends symmetry about the lower mould, installs keel frame on the bottom plate, and the pneumatic cylinder is installed to keel frame's upper end, and adjustment mechanism is installed to the ejecting end of pneumatic cylinder, and adjustment mechanism's internally mounted has the mould.

The lower die comprises a base, a die plate, a cylinder, an alignment module, a first cavity, a reset branched chain, a heat preservation cavity and an extension pipe, wherein the base is arranged on a bottom plate, the base is arranged to ensure that the lower end of the die plate which descends to the lowest position is supported by the base instead of the ejection end of the cylinder, the position of the die plate is unchanged and the damage of the ejection end of the cylinder is avoided when an upper die descends for die forging, the die plate is embedded in the base, the cylinder is connected between the die plate and the bottom plate, the left end and the right end of the bottom plate are connected with the alignment module through the reset branched chain, the reset branched chain plays a role in elastic reset to the alignment module, the lower end of the alignment module is connected with the bottom plate in a sliding fit manner, the first cavity is formed between the alignment modules which are arranged on the left and the right, the alignment modules at the initial position are in a separated state, and the heat preservation cavity is formed on the alignment module, the gas outlet and the extension pipe in heat preservation chamber are connected, and the air pump imports the heat preservation intracavity with steam, and partial steam enters into and connects the intracavity, and partial steam is discharged from the gas outlet in heat preservation chamber, because the length of extension pipe is longer, and gas outlet exhaust hot gas cools down after longer extension pipe gradually, and the temperature is higher when having avoided direct discharge.

The heat preservation mechanism include the air pump, the insulating frame, a power supply, two current conducting plates, the wire, the apron, start-up spare, the air pump is installed at the working chamber, the air pump can be with steam input to the heat preservation intracavity, thereby maintain the temperature of aiming at the module internal surface, and the air pump is linked together with the air inlet in heat preservation chamber, aim at and install the insulating frame in the module, the upper end embedding of insulating frame has the apron, and the insulating frame, the apron passes through the locking piece and connects, the power is installed in the left side of apron, two current conducting plates are installed on the right side of apron, only need open the apron when changing the power and can change the power, and two current conducting plates, a power supply, connect through the wire between the air pump, be provided with start-up spare between two current conducting plates.

The last mould include the die, the second cavity, connect the chamber, the connecting rod, ejecting branch chain and extension cover, be connected for sliding fit between die and the connecting rod, the upper end of connecting rod is installed at adjustment mechanism, the second cavity has been seted up to the inside of die, the first cavity of consolidation, the complete die forging chamber of second cavity formation, connection chamber has been seted up on the die, the second cavity is located the inside in connection chamber, the inside of second cavity is provided with ejecting branch chain, when the die forging back-lifting, elasticity through ejecting branch chain has reduced the degree of difficulty that die and forging separated, the gas vent in connection chamber is connected with the extension cover, the effect that extends cover and extension pipe is the same, the higher condition of temperature when all having avoided steam directly to discharge.

Preferably, the adjusting mechanism comprises a connecting plate, a movable rod, an outer frame, an extrusion block and an extrusion rod, the ejection end of the hydraulic cylinder is connected with the connecting plate, the left end and the right end of the connecting plate are connected with the movable rod in a sliding fit mode, the movable rod is installed on the bottom plate, the outer frame is installed at the lower end of the connecting plate, the extrusion blocks are symmetrically installed inside the outer frame, the extrusion rod is symmetrically installed at the lower end of the outer frame, and the upper end of the connecting rod is installed on the outer frame.

Preferably, the alignment module is provided with a working chamber, the outer side of the working chamber is provided with a vent hole, the arrangement of the vent hole ensures the normal exchange of the air pump for air, and the vent hole is provided with a plurality of layers of filter screens, so that the entering of larger particle impurities is reduced.

Preferably, the reset branch chain comprises a connecting block, a movable column and a reset spring, an inner groove is formed in the lower end of the alignment module, the movable column is installed in the inner groove, the movable column and the connecting block are sleeved and movably connected, the two sleeves are connected to improve the stability of the alignment module when the alignment module moves, the reset spring is connected between the connecting block and the side wall of the inner groove, and the reset spring plays a reset role.

Preferably, the starting part comprises a conductive block, an insulating frame and an internal spring, the internal spring is connected between the insulating frame and the insulating frame, the conductive block is mounted at the lower end of the insulating frame, and the internal spring plays a role in resetting.

Preferably, the upper half part of the conductive plate is an insulating part, the lower half part of the conductive plate is a conductive part, the two conductive plates are separated, and the conductive block at the initial position is in contact with the upper half part of the conductive plate, and is in an open circuit state.

Preferably, a telescopic dust cover is sleeved outside the hydraulic cylinder to play a role of dust prevention.

Preferably, the inclined plane at the lower end of the extrusion rod is of a structure which is gradually inclined upwards from outside to inside, so that the extrusion difficulty of the extrusion rod in aligning the module is reduced, and the positions of the extrusion block and the starting piece are up and down corresponding.

Preferably, the ejection branched chain comprises a connecting spring and an ejection plate, a movable groove is uniformly formed in the female die, the connecting spring is connected between the movable groove and the ejection plate, and when the female die returns after die forging, the ejection plate is ejected downwards through the elasticity of the connecting spring, so that the difficulty in separating the female die from a forged piece is reduced.

(II) advantageous effects

1. According to the die forging forming device for the hot extrusion composite precision part, the initial position of the alignment module in the lower die is in a left-right separation state, so that the space for placing the blank is enlarged, the blank is conveniently placed, the temperature reduction of the blank is reduced, then the temperature of the inner surfaces of the upper die and the lower die is maintained in a hot gas conveying and heat preservation mode during die forging, the temperature of the blank in the die forging process is guaranteed, the risk of blank cracking and the forging quality are reduced, when the blank is taken out, the alignment module is reset and separated after not being extruded, and then the die plate is matched with the rising of the die to jack up a forge piece, so that the difficulty in taking out is reduced;

2. according to the die forging forming device for the hot extrusion composite precision part, the alignment modules at the initial positions are in a separated state and can be combined only before die forging, the internal space is improved in a separated arrangement mode, the difficulty of putting in a blank in the early stage is reduced, meanwhile, when the blank is taken out at the later stage, the alignment modules are elastically reset and separated after not being extruded along with the rising of the upper die, at the moment, the fit degree between the alignment modules and the forged part is reduced, a larger gap exists between the alignment modules and the forged part, the forged part can be easily jacked up by matching with the rising of the die plate, and the damage to the surface of the forged part when the forged part is forcibly taken out is avoided;

3. according to the die forging forming device for the hot extrusion composite precision part, the heat preservation mechanism and the extrusion block adopt a structural linkage design concept, the heat preservation mechanism is electrified only when the extrusion block descends (at the moment, the upper die begins to descend), so that hot gas is conveyed into the heat preservation cavity and the connecting cavity, the temperature of the inner surfaces of the upper die and the lower die is maintained during die forging, the effective utilization rate of the hot gas is ensured, meanwhile, the performance reduction caused by the fact that a blank is cooled during the die forging process is avoided, and the quality of a forged piece after die forging is reduced.

Drawings

The invention is further illustrated with reference to the following figures and examples.

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

FIG. 2 is a top view of the present invention;

FIG. 3 is a cross-sectional view A-A of FIG. 2 of the present invention;

FIG. 4 is a schematic structural view of an upper die of the present invention;

FIG. 5 is a schematic view of the structure of the outer frame, the extrusion block, the extrusion rod and the upper mold of the present invention;

FIG. 6 is an enlarged view of a portion of the invention at X of FIG. 3;

fig. 7 is a partial enlarged view of the invention at Y of fig. 1.

Detailed Description

Embodiments of the present invention will be described below with reference to the drawings. In this process, the width of the lines or the size of the components in the drawings may be exaggerated for clarity and convenience of description.

The following terms are defined based on the functions of the present invention, and may be different depending on the intention of the user or the operator or the convention. Therefore, these terms are defined based on the entire contents of the present specification.

As shown in fig. 1 to 7, a hot extrusion composite precision piece die forging forming device comprises a bottom plate 1, a lower die 2, a heat preservation mechanism 3, a keel frame 4, a hydraulic cylinder 5, an adjusting mechanism 6 and an upper die 7, wherein the lower die 2 is arranged in the middle of the bottom plate 1, the heat preservation mechanism 3 is symmetrically arranged at the left end and the right end of the lower die 2, the keel frame 4 is arranged on the bottom plate 1, the hydraulic cylinder 5 is arranged at the upper end of the keel frame 4, the adjusting mechanism 6 is arranged at the ejection end of the hydraulic cylinder 5, the upper die 7 is arranged inside the adjusting mechanism 6, and a telescopic dust cover is sleeved outside the hydraulic cylinder 5 to play a dustproof role.

The lower die 2 comprises a base 21, a die plate 22, a cylinder 23, an alignment module 24, a first cavity 25, a reset branch chain 26, a heat preservation cavity 27 and an extension pipe 28, wherein the base 21 is installed on the bottom plate 1, the base 21 is arranged to ensure that the die plate 22 which descends to the lowest position is supported by the base 21 but not supported by the ejection end of the cylinder 23, so that when the upper die 7 descends and is subjected to die forging, the position of the die plate 22 is unchanged and the damage of the ejection end of the cylinder 23 is avoided, the die plate 22 is embedded in the base 21, the cylinder 23 is connected between the die plate 22 and the bottom plate 1, the left end and the right end of the bottom plate 1 are connected with the alignment module 24 through the reset branch chain 26, the reset branch chain 26 plays a role in elastic reset for the alignment module 24, the lower end of the alignment module 24 is connected with the bottom plate 1 in a sliding fit manner, the first cavity 25 is formed between the alignment modules 24 which are arranged left and right, for the detached state between the alignment module 24 of initial position, the heat preservation chamber 27 has been seted up on alignment module 24, the gas outlet and the extension pipe 28 of heat preservation chamber 27 are connected, air pump 31 inputs heat gas in heat preservation chamber 27, and partial heat gas enters into and connects in the chamber 73, and partial heat gas is discharged from the gas outlet in heat preservation chamber 27, because extension pipe 28's length is longer, and gas outlet exhaust hot gas cools down after longer extension pipe 28 gradually, and the temperature is higher when having avoided directly discharging, alignment module 24 on seted up the working chamber, the outside in working chamber is the air vent, the setting up of air vent has guaranteed air pump 31 to the normal exchange of gas, is equipped with the multilayer filter screen on the air vent, has reduced the entering of great granule impurity.

Reset branch 26 include connecting block 261, activity post 262, reset spring 263, aim at the lower extreme of module 24 and seted up the inner groovy, install activity post 262 in the inner groovy, swing joint is established to the cover between activity post 262 and the connecting block 261, the cover of the two is established and is connected the stability when having improved and aim at module 24 and remove, and is connected with reset spring 263 between connecting block 261 and the inner groovy lateral wall, reset spring 263 plays the effect that resets.

The heat preservation mechanism 3 comprises an air pump 31, an insulating frame 32, a power supply 33, two conductive plates 34, a lead 35, a cover plate 36 and a starting piece 37, wherein the air pump 31 is arranged in the working cavity, the air pump 31 can input hot air into the heat preservation cavity 27 so as to maintain the temperature of the inner surface of the alignment module 24, the air pump 31 is communicated with an air inlet of the heat preservation cavity 27, the insulating frame 32 is arranged on the alignment module 24, the cover plate 36 is embedded in the upper end of the insulating frame 32, the insulating frame 32 and the cover plate 36 are connected through the locking piece, the power supply 33 is arranged on the left side of the cover plate 36, the two conductive plates 34 are arranged on the right side of the cover plate 36, the power supply 33 can be replaced only by opening the cover plate 36 when the power supply 33 is replaced, the two conductive plates 34, the power supply 33 and the air pump 31 are connected through the lead 35, the starting piece 37 is arranged between the two conductive plates 34, and the starting piece 37 descends after being pressurized during specific work, thereby contacting with the conductive parts of the two conductive plates 34, at this time, the heat preservation mechanism 3 forms a complete series circuit, the air pump 31 inputs hot air into the heat preservation cavity 27 after being electrified, thereby maintaining the temperature of the inner surface of the alignment module 24 after the upper die 7 is pressed down, and avoiding the temperature of the blank from reducing after contacting with the cold alignment module 24.

The starting piece 37 comprises a conductive block 371, an insulating frame 372 and an internal spring 373, the internal spring 373 is connected between the insulating frame 372 and the insulating frame 32, the conductive block 371 is installed at the lower end of the insulating frame 372, the internal spring 373 plays a role in resetting, the upper half part of the conductive plate 34 is an insulating part, the lower half part of the conductive plate 34 is a conductive part, a separation state is formed between the two conductive plates 34, the conductive block 371 at the initial position is in contact with the upper half part of the conductive plate 34, at the moment, the circuit is in a broken state, the insulating frame 372 descends after being extruded by the extrusion block 64, when the conductive block 371 is in contact with the conductive parts of the two conductive plates 34, the heat preservation mechanism 3 forms a complete series circuit, and hot air is input into the heat preservation cavity 27 after the air pump 31 is electrified.

The adjusting mechanism 6 comprises a connecting plate 61, a movable rod 62, an outer frame 63, an extrusion block 64 and an extrusion rod 65, the ejection end of the hydraulic cylinder 5 is connected with the connecting plate 61, the left end and the right end of the connecting plate 61 are connected with the movable rod 62 in a sliding fit mode, the movable rod 62 is installed on the bottom plate 1, the outer frame 63 is installed at the lower end of the connecting plate 61, the extrusion blocks 64 are symmetrically installed inside the outer frame 63, the extrusion rods 65 are symmetrically installed at the lower end of the outer frame 63, the upper end of the connecting rod 74 is installed on the outer frame 63, the inclined plane at the lower end of the extrusion rod 65 is of a gradually upward inclined structure from outside to inside, the extrusion difficulty of the extrusion rods 65 on the alignment module 24 is reduced, and the positions of the extrusion blocks 64 and the actuating pieces 37 are vertically corresponding.

The upper die 7 comprises a female die 71, a second cavity 72, a connecting cavity 73, a connecting rod 74, an ejection branched chain 75 and an extension cover 76, the female die 71 is connected with the connecting rod 74 in a sliding fit manner, the upper end of the connecting rod 74 is installed on the adjusting mechanism 6, the second cavity 72 is formed in the female die 71, the combined first cavity 25 and the second cavity 72 form a complete die forging cavity, the connecting cavity 73 is formed in the female die 71, the second cavity 72 is located in the connecting cavity 73, the ejection branched chain 75 is arranged in the second cavity 72, when the female die 71 returns after die forging, the difficulty of separating the female die 71 from a forged piece is reduced through elastic ejection of the ejection branched chain 75, an exhaust port of the connecting cavity 73 is connected with the extension cover 76, the extension cover 76 has the same effect with the extension pipe 28, the situation of high temperature when hot gas is directly exhausted is avoided, and during specific work, a blank is placed between the alignment modules 24, the connecting plate 61 and the upper die 7 are driven to descend by the hydraulic cylinder 5, in the descending process, the separately arranged aligning modules 24 are combined by the synchronously descending extruding rod 65, so that the lower half part of the blank is positioned, then the extruding block 64 and the starting piece 37 descend together after contacting, after the starting piece 37 and the conductive parts of the two conductive plates 34 contact, the air pump 31 is electrified to input hot air into the heat preservation cavity 27 and then enter the connecting cavity 73, so that the temperature of the inner surfaces of the upper die 7 and the female die 71 is maintained, meanwhile, the descending female die 71 and the combined aligning modules 24 are vertically aligned and combined, so that the blank is subjected to die forging forming, a forging is further obtained, then the upper die 7 is lifted, the aligning modules 24 which are not extruded are separated and reset under the action of the reset branched chain 26, and then the die plates 22 are singly jacked up by the air cylinder 23, so that the forging is ejected.

The ejection branched chain 75 comprises a connecting spring 751 and an ejection plate 752, a movable groove is uniformly formed in the female die 71, the connecting spring 751 is connected between the movable groove and the ejection plate 752, and when the female die 71 returns after die forging, the ejection plate 752 is ejected downwards through the elasticity of the connecting spring 751, so that the difficulty in separating the female die 71 from a forged piece is reduced.

The working process is as follows:

placing the blank between the alignment modules 24, and driving the connecting plate 61 and the upper die 7 to descend through the hydraulic cylinder 5;

in the descending process, the synchronously descending extrusion rod 65 firstly merges the separately arranged alignment modules 24 to position the lower half part of the blank, then the extrusion block 64 is contacted with the starting piece 37 and then descends together, after the starting piece 37 is contacted with the conductive parts of the two conductive plates 34, the air pump 31 is electrified to input hot air into the heat preservation cavity 27 and then enter the connecting cavity 73, so that the temperature of the inner surfaces of the upper die 7 and the female die 71 is maintained, and meanwhile, the descending female die 71 is vertically aligned and merged with the merged alignment modules 24, so that the blank is subjected to die forging forming, and a forging piece is obtained;

the connecting plate 61 and the upper die 7 are driven to lift back by the hydraulic cylinder 5, the alignment module 24 which is not extruded is separated and reset under the action of the reset branched chain 26, and then the die plate 22 is singly jacked up by the air cylinder 23 so as to jack out the forge piece;

placing the forged piece into a leaching chamber for leaching and cooling;

and carrying out surface precision polishing on the sprayed forging piece to obtain a precision piece.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a compound precision forging of hot extrusion forming device, includes bottom plate (1), lower mould (2), heat preservation mechanism (3), keel frame (4), pneumatic cylinder (5), adjustment mechanism (6), goes up mould (7), its characterized in that: the middle part of the bottom plate (1) is provided with a lower die (2), the left end and the right end of the lower die (2) are symmetrically provided with heat preservation mechanisms (3), the bottom plate (1) is provided with a keel frame (4), the upper end of the keel frame (4) is provided with a hydraulic cylinder (5), the ejection end of the hydraulic cylinder (5) is provided with an adjusting mechanism (6), and the inner part of the adjusting mechanism (6) is provided with an upper die (7);

the lower die (2) comprises a base (21), a die plate (22), an air cylinder (23), an alignment module (24), a first cavity (25), a reset branch chain (26), a heat preservation cavity (27) and an extension pipe (28), wherein the base (21) is installed on the bottom plate (1), the die plate (22) is embedded in the base (21), the air cylinder (23) is connected between the die plate (22) and the bottom plate (1), the left end and the right end of the bottom plate (1) are connected with the alignment module (24) through the reset branch chain (26), the lower end of the alignment module (24) is connected with the bottom plate (1) in a sliding fit manner, the first cavity (25) is formed between the alignment modules (24) which are arranged left and right, the heat preservation cavity (27) is formed in the alignment module (24), and an air outlet of the heat preservation cavity (27) is connected with the extension pipe (28);

the reset branched chain (26) comprises a connecting block (261), a movable column (262) and a reset spring (263), an inner groove is formed in the lower end of the alignment module (24), the movable column (262) is installed in the inner groove, a movable connection is sleeved between the movable column (262) and the connecting block (261), and the reset spring (263) is connected between the connecting block (261) and the side wall of the inner groove;

the heat preservation mechanism (3) comprises an air pump (31), an insulating frame (32), a power supply (33), two conductive plates (34), a lead (35), a cover plate (36) and a starting piece (37), wherein the air pump (31) is installed in the working cavity, the air pump (31) is communicated with an air inlet of the heat preservation cavity (27), the insulating frame (32) is installed on the alignment module (24), the cover plate (36) is embedded into the upper end of the insulating frame (32), the insulating frame (32) and the cover plate (36) are connected through a locking piece, the power supply (33) is installed on the left side of the cover plate (36), the two conductive plates (34) are installed on the right side of the cover plate (36), the two conductive plates (34), the power supply (33) and the air pump (31) are connected through the lead (35), and the starting piece (37) is arranged between the two conductive plates (34);

the upper die (7) comprises a female die (71), a second cavity (72), a connecting cavity (73), a connecting rod (74), an ejection branched chain (75) and an extension cover (76), the female die (71) is connected with the connecting rod (74) in a sliding fit manner, the upper end of the connecting rod (74) is installed on the adjusting mechanism (6), the second cavity (72) is arranged in the female die (71), the connecting cavity (73) is arranged on the female die (71), the second cavity (72) is located in the connecting cavity (73), the ejection branched chain (75) is arranged in the second cavity (72), and an exhaust port of the connecting cavity (73) is connected with the extension cover (76);

the ejection branched chain (75) comprises connecting springs (751) and an ejection plate (752), movable grooves are uniformly formed in the female die (71), and the connecting springs (751) are connected between the movable grooves and the ejection plate (752);

adjustment mechanism (6) including connecting plate (61), movable rod (62), frame (63), extrusion piece (64) and extrusion pole (65), the ejection end and connecting plate (61) of pneumatic cylinder (5) are connected, both ends are connected with movable rod (62) through sliding fit's mode about connecting plate (61), install on bottom plate (1) movable rod (62), frame (63) are installed to the lower extreme of connecting plate (61), extrusion piece (64) are installed to the inside symmetry of frame (63), extrusion pole (65) are installed to the lower extreme symmetry of frame (63), install on frame (63) the upper end of connecting rod (74).

2. The die forging device for hot extrusion of composite precision parts according to claim 1, wherein: the alignment module (24) is provided with a working cavity, the outer side of the working cavity is provided with a vent hole, and the vent hole is provided with a plurality of layers of filter screens.

3. The die forging forming device for the hot extrusion composite precision part according to claim 1, wherein: the starting piece (37) comprises a conductive block (371), an insulating frame (372) and a built-in spring (373), the built-in spring (373) is connected between the insulating frame (372) and the insulating frame (32), and the conductive block (371) is installed at the lower end of the insulating frame (372).

4. The die forging device for hot extrusion of composite precision parts according to claim 3, wherein: the upper half part of the conductive plate (34) is an insulating part, the lower half part of the conductive plate (34) is a conductive part, the two conductive plates (34) are separated, and the conductive block (371) at the initial position is in contact with the upper half part of the conductive plate (34).

5. The die forging device for hot extrusion of composite precision parts according to claim 1, wherein: and a telescopic dust cover is sleeved outside the hydraulic cylinder (5).

6. The die forging device for hot extrusion of composite precision parts according to claim 1, wherein: the inclined surface of the lower end of the extrusion rod (65) is of a structure which is gradually inclined upwards from outside to inside, and the positions of the extrusion block (64) and the starting piece (37) are corresponding up and down.