CN110586900A - Hot-press forming method of metal hot-press forming device - Google Patents

Hot-press forming method of metal hot-press forming device Download PDF

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Publication number
CN110586900A
CN110586900A CN201911126091.2A CN201911126091A CN110586900A CN 110586900 A CN110586900 A CN 110586900A CN 201911126091 A CN201911126091 A CN 201911126091A CN 110586900 A CN110586900 A CN 110586900A
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China
Prior art keywords
metal material
processed
hole
die
front electrode
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Granted
Application number
CN201911126091.2A
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CN110586900B (en
Inventor
王强
赵亚军
彭方方
王晓春
张博文
魏云飞
孙培
曲东升
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Changzhou Mingseal Robotic Technology Co Ltd
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Changzhou Mingseal Robotic Technology Co Ltd
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Priority to CN201911126091.2A priority Critical patent/CN110586900B/en
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/02Hot chamber machines, i.e. with heated press chamber in which metal is melted
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B22CASTING; POWDER METALLURGY
    • B22DCASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B22D17/20Accessories: Details
    • B22D17/26Mechanisms or devices for locking or opening dies
    • B22D17/266Mechanisms or devices for locking or opening dies hydraulically

Abstract

The invention discloses a hot-press molding method of a metal hot-press molding device, which comprises the following steps: s1, inserting the metal material to be processed into the first through hole; s2, closing the fixed die and the movable die; s3, driving a front electrode of a front electrode assembly to be inserted into the first through hole through the electrode driving assembly and driving the front electrode to move along the axial direction of the first through hole, enabling a rear electrode located in the second through hole to discharge in a matched manner with the front electrode, and driving the front electrode to press the metal material to be machined by the electrode driving assembly in at least one part of the time period of discharge heating of the metal material to be machined; s4, heating the metal material to be processed to a molten state, driving the front electrode to move towards the direction of the cavity along the axial direction of the first through hole by the electrode driving assembly, extruding the metal material to be processed in the molten state, and enabling the metal material to be processed in the molten state to enter the flow channel from the first through hole and flow to the cavity; and S5, opening the mold after the product is molded, and taking out the product. The hot press molding method has simple process and convenient operation, and improves the production efficiency.

Description

Hot-press forming method of metal hot-press forming device
Technical Field
The invention belongs to the technical field of hot-press molding, and particularly relates to a hot-press molding method of a metal hot-press molding device.
Background
At present, the prior domestic die casting machine has low product processing efficiency and high cost, and the machine structure is generally vertical. The structure of the existing die casting machine generally includes: the device comprises a frame, a template mechanism, a cooling system, an electric melting system, a hydraulic control system, a rapid pressurization system and the like, and has the defects of complex structure, more installation mechanism parts, complex assembly, time consumption and the like. The existing metal hot-press molding method has the defects of longer processing period, complex process, more needed labor and the like.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art.
Therefore, the invention provides the hot-press forming method of the metal hot-press forming device, which has the advantages of simple process steps, convenience in implementation and improvement on processing efficiency.
According to the hot-press forming method of the metal hot-press forming device, the metal hot-press forming device comprises a fixed die and a movable die, the movable die can move towards or back to the direction of the fixed die along the horizontal direction to perform die assembly or die assembly, when the die assembly is performed, the movable die and the fixed die are matched to limit a die cavity, the fixed die is provided with a first through hole, the first through hole is communicated with the die cavity through a runner, the movable die is provided with a second through hole communicated with the die cavity, and the method comprises the following steps: s1, inserting the metal material to be processed into the first through hole; s2, combining the fixed die and the movable die; s3, driving a front electrode of a front electrode assembly to be inserted into the first through hole through an electrode driving assembly and driving the front electrode to move along the axial direction of the first through hole, enabling a rear electrode located in a second through hole to discharge in a matched manner with the front electrode, and driving the front electrode to press the metal material to be processed through the electrode driving assembly in at least one part of a time period of discharging and heating the metal material to be processed; s4, heating the metal material to be processed to a molten state, driving the front electrode to move towards the die cavity along the axial direction of the first through hole by the electrode driving assembly, extruding the metal material to be processed in the molten state, and enabling the metal material to be processed in the molten state to enter the flow channel from the first through hole and flow to the die cavity; and S5, opening the mold after the product is molded, and taking out the product.
According to the hot-press molding method of the metal hot-press molding device, the fixed die and the movable die which are distributed along the horizontal direction are matched with each other, so that the die is opened and closed along the horizontal direction. When the die is closed, the front electrode assembly and the rear electrode assembly are matched with each other, metal materials to be processed positioned in the first through hole can be heated, the electrode driving assembly is matched with the front electrode assembly, the metal materials are heated to be in a molten state and then are extruded to the die cavity, and extrusion forming is achieved.
According to an embodiment of the present invention, the step S1 includes the steps of: s11, conveying the metal material to be processed between the fixed die and the movable die; and S12, inserting the metal material to be processed into the first through hole from one end of the first through hole close to the position where the movable die is located.
According to an embodiment of the present invention, the step S2 includes the steps of: s21, driving the movable die and the fixed die to be matched; and S22, performing pressure maintaining and mold locking after the mold clamping pressure reaches a preset value.
According to an embodiment of the present invention, the step S3 includes: s31, driving the front electrode to move along the axial direction of the first through hole through the electrode driving assembly, and pushing the metal material to be processed to move to a preset position along the axial direction of the first through hole, wherein the metal material to be processed does not receive pressing force; and S32, driving the front electrode to move along the axial direction of the first through hole by the electrode driving assembly and pressing the metal material to be processed.
According to an embodiment of the present invention, in the step S32, the pressing force of the front electrode on the metal material to be processed is 0.03T to 2.0T, the pressing speed is 5mm/S to 50mm/S, and the pressing force and/or the pressing speed of the front electrode on the metal material to be processed can be adjusted according to a preset curve during the pressing process.
According to an embodiment of the present invention, in the step S32, the front electrode continuously compresses the metal material to be processed until the heating is finished.
According to an embodiment of the present invention, the step S5 includes the steps of: s51, keeping the position of the front electrode unchanged, keeping the extrusion force unchanged, and carrying out pressure maintaining cooling on the formed product; s52, releasing pressure and opening the die.
According to an embodiment of the present invention, the step S52 includes: and S521, when the mold is opened, the front electrode follows towards one side of the position of the movable mold, and the molded product is pushed away from the fixed mold.
According to an embodiment of the present invention, an ejector pin is disposed on a side of the movable mold away from the fixed mold, and the step S52 further includes: s522, the movable die drives one side of the product, which deviates from the position of the fixed die, to move; and S523, the movable die moves towards the direction of the ejector pin, and the ejector pin extends into the cavity to eject the molded product and is separated from the movable die.
According to an embodiment of the present invention, the first through hole and the second through hole extend in a horizontal direction, and the metal material to be processed is a cylindrical member.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic flow chart of a hot press forming method of a metal hot press forming apparatus according to an embodiment of the present invention;
fig. 2 is a schematic perspective view of a metal hot press molding apparatus according to an embodiment of the present invention;
fig. 3 is a sectional view of a metal hot press molding apparatus according to an embodiment of the present invention.
Reference numerals:
a metal hot press molding apparatus 100;
a stationary mold 20; a first through hole 21;
a movable mold 30; a front electrode assembly 40; a rear electrode assembly 50; an electrode drive assembly 60;
and a thimble 91.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention. Furthermore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
A hot press forming method of a metal hot press forming apparatus according to an embodiment of the present invention is described in detail below with reference to the accompanying drawings.
As shown in fig. 1 to 3, according to the hot press forming method of the metal hot press forming apparatus of the embodiment of the present invention, the metal hot press forming apparatus 100 includes a fixed mold 20 and a movable mold 30, the movable mold 30 can move in a direction toward or away from the fixed mold 20 along a horizontal direction to mold closing or mold opening, when the mold closing is performed, the movable mold 30 and the fixed mold 20 cooperate to define a cavity, the fixed mold 20 is provided with a first through hole 21, the first through hole 21 communicates with the cavity through a runner, and the movable mold 30 is provided with a second through hole communicating with the cavity, the method includes the following steps: s1, inserting the metal material to be processed into the first through hole 21; s2, assembling the fixed die 20 and the movable die 30; s3, driving the front electrode of the front electrode assembly 40 to be inserted into the first through hole 21 and to move along the axial direction of the first through hole 21 through the electrode driving assembly 60, enabling the rear electrode positioned in the second through hole to discharge in a matched manner with the front electrode, and driving the front electrode to press the metal material to be machined by the electrode driving assembly 60 in at least one part of the time period for heating the metal material to be machined by discharging; s4, heating the metal material to be processed to a molten state, driving the front electrode to move towards the direction of the cavity along the axial direction of the first through hole 21 by the electrode driving assembly 60, extruding the metal material to be processed in the molten state, and enabling the metal material to be processed in the molten state to enter the flow channel from the first through hole 21 and flow to the cavity; and S5, opening the mold after the product is molded, and taking out the product.
In other words, the hot press forming method of the metal hot press forming device according to the embodiment of the invention mainly comprises the following steps: firstly, a metal material to be processed is inserted into a first through hole 21 formed in a fixed die 20, then a movable die 30 is driven to move towards one side of the position of the fixed die 20 to realize die assembly, then a front electrode is driven to be inserted into the first through hole 21 through an electrode driving assembly 60 connected with a front electrode assembly 40, the front electrode can move along the axial direction of the first through hole 21 under the action of the electrode driving assembly 60, the front electrode can be abutted against the metal material to be processed positioned in the first through hole 21, and the metal material to be processed can be pushed and extrusion force towards the direction of a die cavity can be applied to the metal material to be processed. The rear electrode positioned in the second through hole and the front electrode positioned in the first through hole 21 are oppositely arranged and matched with each other, so that discharge can be realized, and the metal material to be processed can be heated to a molten state. Then, the front electrode can extrude the material in the molten state under the driving of the electrode driving assembly 60, the material in the molten state enters the runner through the first through hole 21 and flows into the cavity for molding, and finally, the movable mold 30 moves towards the side back to the position of the fixed mold 20, so that the mold opening is realized and the product is taken out.
Therefore, according to the hot press molding method of the metal hot press molding device, the movable mold 30 and the fixed mold 20 can be opened and closed along the horizontal direction to form a horizontal structure, the front electrode assembly 40 and the rear electrode assembly 50 are matched with each other, metal materials to be processed can be heated to a molten state and extruded into the cavity, namely, the hot press molding method of the embodiment of the invention can rapidly extrude and inject the raw materials into required products through electric heating without heating, melting and die-casting the raw materials of the products, and the production efficiency is improved.
According to one embodiment of the present invention, step S1 includes the steps of: s11, conveying the metal material to be processed between the fixed die 20 and the movable die 30; and S12, inserting the metal material to be processed into the first through hole 21 from one end of the first through hole 21 close to the position of the movable die 30. That is, during feeding, the metal material to be processed can be conveyed between the fixed die 20 and the movable die 30 through the feeding mechanism, then one end of the metal material to be processed is inserted into one end of the first through hole 21 close to the position of the movable die 30, and the one end of the metal material to be processed is driven to move along the axial direction of the first through hole 21, so that the feeding position of the metal material to be processed can be adjusted. The feeding position is arranged between the fixed die 20 and the movable die 30, so that the total length of the equipment is saved, the material pushing time is saved, and the feeding efficiency can be improved.
In some embodiments of the present invention, step S2 includes the following steps: s21, driving the movable die 30 and the fixed die 20 to carry out die assembly; and S22, performing pressure maintaining and mold locking after the mold clamping pressure reaches a preset value, wherein the pressure maintaining and mold locking have the advantages that the inner space of the cavity is ensured to be complete, the movable mold 30 and the fixed mold 20 are tightly closed, no flash is generated during product molding, and the later processing is reduced.
According to an embodiment of the present invention, step S3 includes: s31, the electrode driving assembly 60 drives the front electrode to move axially along the first through hole 21 and pushes the metal material to be processed to move axially along the first through hole 21 to a preset position, the metal material to be processed does not receive pressing force, that is, the electrode driving assembly 60 pushes the metal material to be processed to reach the preset position by pushing action, the front electrode is not yet contacted with the metal material to be processed, the pushing action is to quickly push the metal material to be processed to the set position, and the metal material to be processed is not yet pressed; and S32, the electrode driving assembly 60 drives the front electrode to move along the axial direction of the first through hole 21 and compress the metal material to be processed, and the metal material to be processed can be electrically heated in the compressing process.
Optionally, in step S32, the pressing force of the front electrode on the metal material to be processed is 0.03T to 2.0T, the pressing speed is 5mm/S to 50mm/S, and the pressing force and/or the pressing speed of the front electrode on the metal material to be processed can be adjusted according to a preset curve during the pressing process.
According to one embodiment of the invention, the pressing force of the front electrode on the metal material to be processed is constant pressure or variable pressure, and when the pressing force is variable pressure, the pressing force can be adjusted according to a preset curve in real time.
Further, in step S32, the front electrode continuously compresses the metal material to be processed until the heating is completed, so as to ensure that the front electrode and the metal material to be processed are always in full contact in the heating process. When continuous pressing action is not carried out, the metal material to be processed can be in poor contact with the front electrode due to softening in the heating process, the heating effect cannot be achieved or the power supply is interrupted, the pressing force is selected according to observation of the effect in an experiment, the head of the front electrode is too fast deformed after being heated for many times due to overlarge pressing force, the reason is analyzed that the front electrode can be heated due to heat conduction of raw materials in the heating process, the rigidity of the electrode is weakened after the temperature of the electrode rises, the head of the electrode is too tightly matched with the first through hole 21 after being deformed to a certain degree, the friction force is increased, the first through hole 21 is damaged, the injection action is not smooth, and the forming is poor.
In some embodiments of the invention, the pressing force and/or pressing speed exerted by the front electrode throughout the execution of the shot task on the charge of metal to be processed can be adjusted according to a preset curve.
When the compaction speed is lower than the set speed (5mm/s-50mm/s), the metal material to be processed is softened and flows in the heating process, so that the front electrode and the metal material to be processed are heated and contacted badly, the heating is incomplete and sufficient, the material is fried through local overheating, and the compaction speed is too high. And the front electrode has poor contact during initial contact, the displacement distance is too long in the heating process, the injection distance is short in the later period, and the filling and forming cannot be completed.
It should be noted that, after the pressing force is reached, the power supply is controlled to continuously and stably heat the metal material to be processed, the heating time and the heating current are set according to the shape and the length of the metal material to be processed, so that the state of the metal material to be processed in the whole heating process is ensured to be controllable, and finally, the metal material to be processed can be melted and extruded.
In step S4, the electrode driving assembly 60 presses the metallic glass material that has reached the predetermined state into the flow passage from the first through hole 21 and into the cavity to form a metallic glass original of a specific shape. In the process, the injection speed and force are set according to the size of a formed original piece, the product is insufficiently formed due to too low speed, the raw material is cooled, and the like.
The inner wall surfaces of the first through hole 21 and the second through hole may be insulating surfaces, that is, the outer peripheries of the front electrode and the rear electrode may be disposed to face the insulating surfaces. Specifically, a through mounting hole may be provided in the fixed mold 20, and a hollow ceramic tube having an insulating function may be provided in the mounting hole. A first through hole 21 may be provided therethrough along an axial direction of the ceramic tube.
According to one embodiment of the present invention, step S5 includes the steps of: and S51, keeping the position of the front electrode unchanged, keeping the extrusion force unchanged, and carrying out pressure-maintaining cooling on the formed product, namely keeping the position of the front electrode connected with the electrode driving assembly 60 unchanged after the injection task is completed, keeping the pressure unchanged, preventing the raw material from flowing back, namely, carrying out pressure-maintaining cooling on the material, wherein the reason for the pressure-maintaining cooling is that according to the characteristics of the metal glass, when the material is heated to a certain temperature, the material needs to be rapidly cooled and formed, otherwise, the material is deteriorated, crystallized and becomes brittle, and a real product cannot be formed. The pressure maintaining and cooling time can be confirmed according to the temperature in the mold, and is generally set to be 0.0S-5.0S; and S52, releasing pressure and opening the die, specifically, controlling the servo hydraulic station to release pressure and open the die after pressure maintaining and cooling are completed.
Further, step S52 includes: s521, the front electrode follows the side of the movable mold 30 when the mold is opened, and pushes the molded product away from the fixed mold 20. Specifically, the electrode driving assembly 60 drives the front electrode to follow, the molded product is pushed away from the fixed mold 20, after a predetermined distance is reached, the electrode driving assembly 60 returns to the original point, and the finished product follows the movable mold 30 to be opened.
According to an embodiment of the present invention, a thimble 91 is provided on a side of the movable mold 30 away from the fixed mold 20, and the step S52 further includes: s522, the movable die 30 drives one side of the product, which deviates from the position of the fixed die 20, to move; and S523, the movable die 30 moves towards the direction of the ejector pin 91, the ejector pin 91 extends into the cavity to eject the molded product out and separate the molded product from the movable die 30, specifically, the ejector pin 91 ejects out to push the blanking part of the movable die 30 to eject the finished product to a specified blanking port, and a product cycle is completed.
In some embodiments of the present invention, the first through hole 21 and the second through hole extend in a horizontal direction, and the metal material to be processed is a cylindrical member.
According to one embodiment of the invention, the hot press molding system of the metal hot press molding device 100 comprises a control system module, a man-machine interaction module, a servo injection module, a power supply heating module, a servo hydraulic mold closing module and a material returning module, and a molding method can be executed through the hot press molding system and is used for molding and processing the material of the metal glass.
Specifically, the control system module can be respectively connected with the human-computer interaction module, the servo injection module, the power supply heating module, the servo hydraulic die assembly module and the material returning module, and can control cooperation among the modules, store, calculate and output input parameters from a human-computer interaction interface, and realize equipment fault alarm pre-judgment and the like. The human-computer interaction module can be used for inputting parameters, displaying the machining process and having the reminding functions of the alarm display and processing method of the machining fault. The servo injection module not only has a pressure detection function and a displacement detection function, but also has closed-loop control on pressure in the injection process, and can be used for controlling the displacement in the injection process, the injection speed of the servo injection module can be adjusted along with parameters, and the injection curve can be read through the servo injection module. The power supply heating module can rapidly heat the metal glass, and the heating time, the heating current and the like can be set by parameters through the power supply heating module. A servo motor of the servo hydraulic die assembly module can drive an oil pump to accurately feed oil to the oil cylinder. The material returning module can control the material returning speed and pressure and can also realize the control of material returning displacement.
The matching among the modules of the hot press molding system according to the embodiment of the invention is as follows: the control system module controls the feeding mechanism to send the metal material to be processed between the fixed die 20 and the movable die 30, the metal material to be processed is inserted into the first through hole 21, the servo oil cylinder of the servo injection module can push the movable die 30 and the fixed die 20 to carry out die assembly, and pressure maintaining and die locking can be carried out after die assembly pressure is reached. The servo injection module pushes the metal material to be processed to reach a set position by pushing, and the metal material to be processed is not pressed. The servo injection module can push the front electrode to compress the metal material to be processed, control the pressing force and the compressing speed and continue until the power supply finishes heating. When the metal material to be processed is heated to a molten state, the servo injection module applies work to rapidly extrude the metal material to be processed, and the metal glass material reaching a preset state is extruded to enter the flow channel from the first channel and then enter the cavity to form a metal glass original piece with a specific shape. And the servo injection module controls the position of the front electrode to be kept unchanged and the pressure to be kept unchanged after the injection task is executed, the material is subjected to pressure maintaining cooling, and the pressure maintaining cooling time can be set through the system control module. And (3) opening the die after pressure maintaining and cooling are finished, driving a front electrode to follow by the servo injection module to push the formed product away from the fixed die 20, returning the servo injection module to the original point after the preset distance is reached, opening the die by the finished product following the movable die 30, ejecting the ejector pin 91 by the material returning module following the retreat of the movable die 30, pushing the blanking part of the movable die 30 to eject the finished product to a specified blanking port, returning the servo hydraulic die closing module to the original point, and finishing a product period.
In summary, the hot press molding method provided by the embodiment of the invention can improve the processing efficiency and has the advantages of short processing period, simple process, less manpower requirement and the like.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A hot-press forming method of a metal hot-press forming device comprises a fixed die and a movable die, wherein the movable die can move towards or back to the direction of the fixed die along the horizontal direction to perform die assembly or die disassembly, and a die cavity is limited by the movable die and the fixed die in a matching way during die assembly, the hot-press forming device is characterized in that the fixed die is provided with a first through hole which is communicated with the die cavity through a runner, the movable die is provided with a second through hole which is communicated with the die cavity, and the method comprises the following steps:
s1, inserting the metal material to be processed into the first through hole;
s2, combining the fixed die and the movable die;
s3, driving a front electrode of a front electrode assembly to be inserted into the first through hole through an electrode driving assembly and driving the front electrode to move along the axial direction of the first through hole, enabling a rear electrode located in a second through hole to discharge in a matched manner with the front electrode, and driving the front electrode to press the metal material to be processed through the electrode driving assembly in at least one part of a time period of discharging and heating the metal material to be processed;
s4, heating the metal material to be processed to a molten state, driving the front electrode to move towards the die cavity along the axial direction of the first through hole by the electrode driving assembly, extruding the metal material to be processed in the molten state, and enabling the metal material to be processed in the molten state to enter the flow channel from the first through hole and flow to the die cavity;
and S5, opening the mold after the product is molded, and taking out the product.
2. The method according to claim 1, wherein the step S1 comprises the steps of:
s11, conveying the metal material to be processed between the fixed die and the movable die;
and S12, inserting the metal material to be processed into the first through hole from one end of the first through hole close to the position where the movable die is located.
3. The method according to claim 1, wherein the step S2 comprises the steps of:
s21, driving the movable die and the fixed die to be matched;
and S22, performing pressure maintaining and mold locking after the mold clamping pressure reaches a preset value.
4. The method according to claim 1, wherein the step S3 includes:
s31, driving the front electrode to move along the axial direction of the first through hole through the electrode driving assembly, and pushing the metal material to be processed to move to a preset position along the axial direction of the first through hole, wherein the metal material to be processed does not receive pressing force;
and S32, driving the front electrode to move along the axial direction of the first through hole by the electrode driving assembly and pressing the metal material to be processed.
5. The method according to claim 4, wherein in step S32, the pressing force of the front electrode on the metal material to be processed is 0.03T-2.0T, the pressing speed is 5mm/S-50mm/S, and the pressing force and/or the pressing speed of the front electrode on the metal material to be processed can be adjusted according to a preset curve during the pressing process.
6. The method according to claim 4, wherein in step S32, the front electrode continuously compresses the metal material to be processed until heating is finished.
7. The method according to claim 1, wherein the step S5 comprises the steps of:
s51, keeping the position of the front electrode unchanged, keeping the extrusion force unchanged, and carrying out pressure maintaining cooling on the formed product;
s52, releasing pressure and opening the die.
8. The method according to claim 7, wherein the step S52 includes:
and S521, when the mold is opened, the front electrode follows towards one side of the position of the movable mold, and the molded product is pushed away from the fixed mold.
9. The method according to claim 8, wherein a thimble is provided on a side of the movable mold facing away from the fixed mold, and the step S52 further comprises:
s522, the movable die drives one side of the product, which deviates from the position of the fixed die, to move;
and S523, the movable die moves towards the direction of the ejector pin, and the ejector pin extends into the cavity to eject the molded product and is separated from the movable die.
10. The method according to any one of claims 1 to 9, wherein the first through-hole and the second through-hole each extend in a horizontal direction, and the metal material to be processed is a columnar member.
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US20140360695A1 (en) * 2011-11-11 2014-12-11 Apple Inc. Melt-containment plunger tip for horizontal metal die casting
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