Anti-sticking mold easy-to-release magnetic tile compaction mold and working method thereof

Abstract

The application discloses a magnetic tile compaction mold with anti-sticking and easy parting, which comprises an upper mold base, a lower mold base and a cavity assembly, the cavity assembly is formed when the upper mold base and the lower mold base are closed; the application further comprises a gas blowing unit, the input end of the gas blowing unit is connected with a gas source, and the output end of the gas blowing unit sprays gas towards the cavity assembly to eliminate local negative pressure; the gas blowing unit comprises a gas channel and a gas nozzle, and the gas channel is formed in the upper mold base and the lower mold base. The application is provided with the gas blowing unit, the input end of the gas blowing unit is connected with the gas source, and the output end of the gas blowing unit sprays gas towards the cavity assembly to eliminate local negative pressure, thereby relieving the negative pressure adsorption and physical adhesion phenomenon, greatly reducing the parting resistance, avoiding the mold jam caused by mold sticking and solving the problem that a local negative pressure area is formed between the blank and the parting surface in the high-pressure compaction process, thereby causing the difficulty in demolding between the blank and the cavity wall and the parting surface.

Description

Technical Field

[0001] This application relates to the field of magnetic tile forming and processing technology, specifically to a magnetic tile compaction mold with anti-sticking and easy separation, and a working method for the magnetic tile compaction mold with anti-sticking and easy separation. Background Technology

[0002] As a core functional component of motors, the molding precision and production continuity of magnetic tiles directly determine the quality of motor products and the efficiency of industrial production. Currently, the mainstream process in the industry is the pressing molding process using compaction molds. This involves pressing a blank made of a mixture of magnetic powder and binder under high pressure, followed by separation of the mold along the parting line to remove the magnetic tile blank. However, existing magnetic tile compaction molds suffer from a core and difficult-to-solve technical problem—severe adhesion between the magnetic tile blank and the mold cavity and parting line, leading to difficulties in parting. This problem directly restricts the stability and efficiency of magnetic tile molding.

[0003] Since the magnetic tile blank is made of magnetic powder and adhesives such as epoxy resin, the blank will undergo plastic deformation and closely adhere to the mold cavity wall during the high-pressure compaction process. At the same time, the air between the blank and the parting surface is completely squeezed out, forming a "local negative pressure zone". This results in strong physical adsorption and friction between the blank and the cavity wall and the parting surface, making demolding difficult. Summary of the Invention

[0004] To address the aforementioned technical problems, this application provides an anti-sticking, easy-separating magnetic tile compaction mold and its working method.

[0005] On the one hand, the present invention provides a magnetic tile compaction mold that is easy to separate and prevents sticking, including an upper mold base, a lower mold base and a cavity assembly, wherein the cavity assembly is formed when the upper mold base and the lower mold base are closed; It also includes a gas blowing unit, the input end of which is connected to an external gas source, and the output end of which blows air toward the cavity assembly to eliminate local negative pressure; The gas blowing unit includes an air passage and an air nozzle. The air passage is formed in the upper mold base and the lower mold base, and the air nozzle is arranged on the parting surface of the upper mold base and the lower mold base. The input end of the air nozzle is connected to the air passage.

[0006] As a further technical solution of the present invention, multiple sets of air nozzles are provided and evenly distributed along the cavity trajectory, and all the air nozzles are connected in series on the air passage.

[0007] As a further technical solution of the present invention, it also includes a cavity anti-adhesion layer, which is a diamond-like coating and is uniformly coated on the inner wall of the upper cavity and the inner wall of the lower cavity.

[0008] As a further technical solution of the present invention, it also includes the elastic push unit, which includes an ejector pin, an ejector pin seat and a return spring. The ejector pins are evenly distributed at the bottom of the lower cavity. The lower end of the ejector pin passes through the guide hole of the lower mold base and is connected to the ejector pin seat. The return spring is sleeved on the outside of the ejector pin, and its two ends abut against the spring mounting groove of the lower mold base and the spring mounting groove of the ejector pin seat, respectively.

[0009] As a further technical solution of the present invention, it also includes the cavity assembly, which includes an upper cavity and a lower cavity. The upper cavity is fixed to the bottom of the upper mold base by bolts, and the lower cavity is fixed to the top of the lower mold base by bolts. After the upper cavity and the lower cavity are molded together, a forming cavity matching the shape of the magnetic tile is formed.

[0010] As a further technical solution of the present invention, the air nozzles of the upper cavity and the lower cavity are distributed vertically and vertically, and the air nozzles are flat.

[0011] As a further technical solution of the present invention, the bottom of the upper cavity is an arc-shaped concave surface, and the top of the lower cavity is an arc-shaped convex surface, and the arc-shaped surfaces of the two are respectively matched with the outer contour and inner contour of the magnetic tile.

[0012] As a further technical solution of the present invention, it also includes a guide component, which is connected between the upper mold base and the lower mold base, and the guide component includes a guide post and a guide sleeve that are slidably engaged; The guide components are provided in multiple sets and are uniformly arranged along the shape trajectory of the upper mold base and the lower mold base.

[0013] As a further technical solution of the present invention, it also includes the pressure regulating component, which includes a pressure sensor, a pressure regulator and a controller. The pressure sensor is uniformly embedded in the inner wall of the upper cavity and the lower cavity. The pressure sensor is electrically connected to the controller through a signal line. The controller is electrically connected to the pressure regulator through a control line. The pressure regulator is connected to the compaction drive mechanism.

[0014] On the other hand, this application also provides a method for using a magnetic tile compaction mold that prevents sticking and facilitates easy separation, including the following steps: S1: Mold pretreatment, checking the sliding flexibility of the guide components, verifying the unobstructed flow of the gas blowing unit, and setting molding parameters; can eliminate mold operation faults in advance, ensure that all components are in normal working condition, and lay the foundation for smooth subsequent molding and parting. S2: Blank filling, the magnetic tile powder blank is evenly filled into the lower cavity; even filling can avoid local accumulation or gaps in the blank, and ensure that the thickness and density of the blank are uniform after molding; S3: Mold closing and compaction. The upper mold base moves down to close the mold, and the pressure adjustment component regulates the pressure in the forming cavity to uniformly reach the set threshold and maintain the compaction state. Precise pressure control and stable compaction state can ensure that the blank is fully formed and improve the structural strength of the blank. S4: Pre-loosening preparation, the upper mold base is slightly raised to form a pre-loosening gap; the pre-loosening can release the residual pressure inside the molding cavity, reduce the resistance during subsequent parting, and avoid the blank sticking or breaking due to residual pressure; S5: Assisted parting, the gas blowing unit sprays compressed air, and the ejector pin of the elastic push unit pushes the blank; the gas blowing and elastic push work together to completely cut off the adhesion path between the blank and the cavity, realize the initial separation of the blank and the cavity wall, and greatly reduce the difficulty of parting. S6: Complete parting. The upper mold base continues to move upward until complete separation, and the blank is removed. A smooth complete parting process can further ensure the integrity of the blank and avoid blank cracking and edge damage caused by forced separation. S7: Reset cleaning, shuts off the gas blowing unit, resets the ejector pins, and cleans the residual blank in the cavity; reset cleaning allows the mold to quickly return to its initial working state, while avoiding residual blank affecting the quality of the next molding, ensuring production continuity.

[0015] In summary, the present invention has at least one of the following beneficial technical effects: 1. Equipped with a gas blowing unit, the gas blowing unit's input end is connected to an external air source, and the gas blowing unit's output end sprays air towards the cavity assembly to eliminate local negative pressure, alleviate negative pressure adsorption and physical adhesion phenomena, significantly reduce parting resistance, and avoid mold jamming caused by sticking; thus solving the problem that a "local negative pressure zone" will form between the blank and the parting surface during high-pressure compaction, causing difficulty in demolding the blank from the cavity wall and parting surface; 2. No need to rely on release agents, eliminating the need for application and cleaning processes. Combined with a fast and stable parting process, it shortens the production cycle, ensures production continuity, and is suitable for large-scale industrial production. It avoids contamination of the blank by release agents, ensuring the density and stability of subsequent sintering processes. The molding cavity and the contour of the magnetic tile are precisely matched, and the pressure is uniformly controlled to ensure consistent molding accuracy of the magnetic tile and reliable finished product quality. 3. The diamond-like coating has high hardness and wear resistance, the guide components are matched with high precision, the modular design of each component has strong mold operation stability, long service life and reduced maintenance costs; it can be adapted to the molding of different specifications of arc-shaped magnetic tiles by adjusting parameters such as cavity size, air nozzle distribution and ejector pin number, and has wide versatility. Attached Figure Description

[0016] Figure 1 The diagram shown is a three-dimensional structural schematic diagram provided by an embodiment of the present invention; Figure 2The diagram shown is a frontal view of the internal structure provided in an embodiment of the present invention. Figure 3 The diagram shows a three-dimensional structural schematic of the anti-sticking mold assembly provided in an embodiment of the present invention.

[0017] Figure label: 1. Upper mold base; 2. Lower mold base; 21. Guide hole; 3. Cavity assembly; 31. Upper cavity; 32. Lower cavity; 33. Molding cavity; 4. Guide assembly; 41. Guide post; 42. Guide sleeve; 43. Grease coating; 5. Anti-stick mold assembly; 51. Cavity anti-stick layer; 52. Gas blowing unit; 521. Air passage; 522. Air nozzle; 523. Air source; 524. Threaded connector; 525. Sealing gasket; 526. Solenoid valve; 53. Elastic push unit; 531. Ejector pin; 532. Ejector pin seat; 533. Return spring; 6. Pressure regulating assembly; 61. Pressure sensor; 62. Pressure regulator; 63. Controller; 64. Signal line; 65. Control line; 7. Compaction drive mechanism. Detailed Implementation

[0018] The present application will be further described in detail below with reference to the embodiments.

[0019] This application relates to a magnetic tile compaction mold with anti-sticking and easy separation, including an upper mold base 1 and a lower mold base 2. The bottom end face of the upper mold base 1 is pre-set with threaded holes for installing the upper cavity 31, and the four corners are pre-set with countersunk holes for installing guide sleeves 42. The bottom of the countersunk holes is opened with threaded holes. An air passage 521 is opened in the upper mold base 1 along the horizontal direction, extending to the air nozzle installation position on the parting surface. The other end of the air passage 521 passes through the side of the upper mold base 1, and a threaded interface is pre-set at the outlet. A wiring groove 11 for arranging signal lines 64 is also opened in the upper mold base 1, extending from the pressure sensor installation position to the controller mounting bracket. The top end face of the lower mold base 2 has a pre-set threaded hole for mounting the lower cavity 32, and the four corners have pre-set mounting holes for mounting the guide pillars 41. An air passage 521 is opened horizontally inside the lower mold base 2, corresponding vertically to the air passage 521 of the upper mold base 1. The other end of the air passage 521 passes through the side of the lower mold base 2, and a threaded interface is pre-set at the outlet. Guide holes 21 for mounting ejector pins 531 are evenly distributed along the circumference of the lower cavity 32 inside the lower mold base 2. A spring mounting groove for mounting a reset spring 533 is pre-set on the bottom end face of the lower mold base 2, coaxially arranged with the guide holes 21. A wiring groove 23 is also opened inside the lower mold base 2, corresponding vertically to the wiring groove 11 of the upper mold base 1. The surfaces of both the upper mold base 1 and the lower mold base 2 are heat-treated to ensure structural strength. Cavity assembly 3: Both the upper cavity 31 and the lower cavity 32 are made of Cr12MoV mold steel and are hardened. The bottom of the upper cavity 31 is an arc-shaped concave surface that matches the outer diameter of the magnetic tile. The two ends of the arc-shaped surface are perpendicular to the side surface of the upper cavity 31. Through holes for mounting bolts are opened at the four corners of the upper cavity 31. The inner wall of the upper cavity 31 is coated with a diamond-like carbon coating 51. Mounting holes for mounting pressure sensors 61 are also opened on the inner wall of the upper cavity 31, which are symmetrically distributed on both sides of the arc-shaped surface. The top of the lower cavity 32 is an arc-shaped convex surface that matches the inner diameter of the magnetic tile, and the two ends of the arc-shaped surface transition perpendicularly to the side of the lower cavity 32; through holes for mounting bolts are opened at the four corners of the lower cavity 32; the inner wall of the lower cavity 32 is coated with a diamond-like carbon coating 51; mounting holes for mounting pressure sensors 61 are opened on the inner wall of the lower cavity 32, which correspond vertically to the mounting holes of the upper cavity 31; after the upper cavity 31 is fixed to the bottom of the upper mold base 1 by bolts, its bottom end face is flush with the bottom end face of the upper mold base 1; after the lower cavity 32 is fixed to the top of the lower mold base 2 by bolts, its top end face is flush with the top end face of the lower mold base 2, and the two are closed to form a molding cavity 33.

[0020] Guide assembly 4: Guide post 41 is cylindrical and chrome-plated; the lower end of guide post 41 is inserted into the mounting hole of lower mold base 2 by interference fit, and the upper end protrudes above the top end face of lower mold base 2; guide sleeve 42 is a cylindrical brass sleeve with lithium-based grease coating 43 on the inner wall; the upper end of guide sleeve 42 is fixed to the countersunk hole of upper mold base 1 by bolts, and the lower end of guide sleeve 42 protrudes from the bottom end face of upper mold base 1, and guide sleeve 42 slides with guide post 41.

[0021] Anti-sticking mold component 5: Cavity anti-sticking layer 51: A diamond-like coating is uniformly applied to the inner walls of the upper and lower cavities 31 and 32 using physical vapor deposition. Gas blowing unit 52: The air passage 521 is a through hole, which is machined by a drilling machine; the air nozzle 522 is a flat stainless steel part, which is evenly distributed on the edge of the parting surface. Each air nozzle 522 is fixedly connected to the air passage 521 through a threaded joint 524. A sealing gasket 525 is fitted on the outside of the threaded joint 524; the input end of the solenoid valve 526 is connected to the air source 523 through an air pipe, and the output end is connected to the threaded interface of the air passage 521 of the upper mold base 1 and the lower mold base 2 through branch air pipes respectively; the air source 523 is fixedly installed on the angle steel bracket on one side of the lower mold base 2, and the bracket is fixedly connected to the side of the lower mold base 2 by bolts; Elastic push unit 53: The ejector pin 531 is a cylindrical stainless steel part, the radius of curvature of the upper arc surface is consistent with the inner wall of the lower cavity 32, and the upper end face is flush with the inner wall of the lower cavity 32; the lower end of the ejector pin 531 is machined with external threads, and is fixedly connected to the ejector pin seat 532 through the threads; the ejector pin seat 532 is a rectangular steel plate, and the top end face is pre-set with threaded holes that mate with the ejector pin 531, which are evenly distributed along the circumference; the return spring 533 is a cylindrical helical spring, which is sleeved on the outside of the ejector pin 531, with the upper end embedded in the spring mounting groove of the lower mold base 2 and the lower end embedded in the spring mounting groove of the ejector pin seat 532.

[0022] Pressure regulating assembly 6 includes a miniature pressure sensor 61, a pressure regulator 62, and a controller 63. The probe of the pressure sensor 61 is embedded in the mounting holes of the upper and lower cavities 31 and 32 and fixed with adhesive. The sensor detection surface is flush with the inner wall of the cavity. The cable is connected to the signal input terminal of the controller 63 through a shielded signal line 64. The controller 63 is fixedly installed on the bracket on the right side of the upper mold base 1. The pressure regulator 62 is fixedly installed on the side of the compaction drive mechanism 7. Its signal input terminal is connected to the signal output terminal of the controller 63 through a control line 65. The hydraulic output terminal of the pressure regulator 62 is connected to the hydraulic control circuit of the compaction drive mechanism 7.

[0023] The specific steps for forming magnetic tiles using a non-stick, easily separable magnetic tile compaction mold are as follows: S1: Mold Pre-treatment Manually hold the handles on both sides of the upper mold base 1 and push the upper mold base 1 up and down to check that the guide post 41 and guide sleeve 42 slide smoothly without jamming; turn on the power switch of the air source 523, adjust the output pressure, open the solenoid valve 526, and observe that the air nozzle 522 sprays out a uniform airflow. Apply soapy water to the connection between the air channel 521 and the air nozzle 522, and no bubbles are generated; connect to the controller 63 through the programming software, set the appropriate molding pressure threshold, compaction holding time, pre-loosening gap, gas injection pressure and injection time, save the parameters after setting and disconnect; S2: The blank filling magnetic tile blank is made of neodymium iron boron powder and epoxy resin binder. The blank is evenly filled into the lower cavity 32 through the discharge port of the automatic feeder aligned with the top opening of the lower cavity 32. The filling amount is slightly higher than the volume of the molding cavity 33. During the filling process, the lower mold base 2 is slightly vibrated by the vibrating feeder to ensure that the blank is filled densely. S3: Mold Closing and Compacting Press the start button of the compaction drive mechanism 7, and the upper mold base 1 closes downward under hydraulic drive. During the mold closing process, the guide sleeve 42 slides smoothly along the guide post 41. When the parting surfaces of the upper and lower cavities 31 and 32 come into contact, the pressure sensor 61 starts to transmit pressure data in real time. When it detects that the local pressure deviates from the set threshold, the controller 63 sends an adjustment signal to the pressure regulator 62. The pressure regulator 62 adjusts the output pressure of the hydraulic pump to stabilize the pressure in each area at the set threshold, and then maintains the compaction state. S4: After the pre-loosening preparation is completed, the controller 63 sends a command to the compaction drive mechanism 7 to control the hydraulic cylinder to drive the upper mold base 1 to lift slightly upward, stay for a period of time, and release the residual pressure inside the molding cavity 33. S5: The auxiliary parting controller 63 sends an energizing signal to the solenoid valve 526, the solenoid valve 526 opens, the air source 523 outputs compressed air, which is delivered to each air nozzle 522 through the air passage 521 and sprayed evenly onto the parting surface; at the same time, the reset spring 533 resets, pushing the ejector pin seat 532 to move upward, and the ejector pin seat 532 drives the ejector pin 531 to push the blank upward for a set time. S6: After the complete parting assisted parting is completed, the controller 63 controls the compaction drive mechanism 7 to drive the upper mold base 1 to continue to move upward until the upper cavity 31 and the lower cavity 32 are completely separated; the robot arm is started, and the grippers of the robot arm extend into the forming cavity 33 from both sides of the lower cavity 32, smoothly clamp the two ends of the magnetic tile blank, take it out and place it on the conveyor belt. S7: The reset cleaning controller 63 controls the solenoid valve 526 to de-energize and shut off the gas blowing; during the next mold closing, as the upper mold base 1 moves downward, its bottom end face contacts the upper end face of the ejector pin 531 and squeezes the ejector pin seat 532, causing the ejector pin 531 to retract into the lower cavity 32, and the reset spring 533 is compressed and stored; at the same time, the operator holds a high-pressure air gun and sprays it into the molding cavity 33 to clean up the small amount of residual blank powder. After cleaning, the air gun is turned off to prepare for the next molding.

[0024] Working principle of the non-stick, easy-to-separate magnetic tile compaction mold: The diamond-like carbon coating on the inner wall of the cavity forms a low-friction, ultra-smooth interface, reducing the physical contact area and adhesion between the blank and the cavity wall, thus weakening the basis for mold sticking from the source. During demolding, the gas blowing unit 52 sprays compressed air onto the parting surface through evenly distributed flat air nozzles 522, quickly filling the gap between the blank and the mold, balancing the local negative pressure area, cutting off the negative pressure adsorption force and chemical adhesion force, and at the same time, the airflow carries away residual adhesive powder, avoiding secondary mold sticking. The ejector pins 531 of the elastic ejector unit 53 push the blank synchronously at multiple points under the action of the return spring 533, creating an initial separation gap, further breaking the tight fit between the blank and the cavity wall, forming a triple anti-sticking synergistic effect of "physical friction reduction + gas isolation + mechanical ejection".

[0025] The guide post 41 and guide sleeve 42 of the guide assembly 4 slide in a high-precision manner to ensure accurate mold closing and parting directions and avoid jamming caused by skewing; the pre-loosening step releases residual pressure, creating favorable conditions for parting, and combined with the dual assistance of gas blowing and elastic pushing, the parting resistance is greatly reduced, achieving smooth and fast parting.

[0026] The pressure regulating component 6 adopts closed-loop control. The pressure sensor 61 collects pressure data of each area of ​​the molding cavity 35 in real time. The controller 63 dynamically adjusts the compaction pressure through the pressure regulator 62 to ensure uniform material density and avoid excessive local pressure, which can aggravate sticking to the mold and damage to the material.

[0027] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. A magnetic tile compaction mold with anti-sticking and easy separation, comprising an upper mold base (1), a lower mold base (2) and a cavity assembly (3), wherein the cavity assembly (3) is formed when the upper mold base (1) and the lower mold base (2) are closed; Its features are, It also includes a gas blowing unit (52), the input end of which is connected to an external gas source, and the output end of which blows air toward the cavity assembly (3) to eliminate local negative pressure; The gas blowing unit (52) includes an air passage (521) and an air nozzle (522). The air passage (521) is formed in the upper mold base (1) and the lower mold base (2). The air nozzle (522) is arranged on the parting surface of the upper mold base (1) and the lower mold base (2). The input end of the air nozzle (522) is connected to the air passage (521).

2. The magnetic tile compaction mold with anti-sticking and easy separation according to claim 1, characterized in that: Multiple sets of air nozzles (522) are provided and are uniformly distributed along the cavity trajectory. All air nozzles (522) are connected in series on the air passage (521).

3. The magnetic tile compaction mold with anti-sticking and easy separation according to claim 1, characterized in that: It also includes a cavity anti-adhesion layer (51), which is a diamond-like coating that is uniformly coated on the inner wall of the upper cavity (31) and the inner wall of the lower cavity (32).

4. The magnetic tile compaction mold with anti-sticking and easy separation according to claim 1, characterized in that: It also includes the elastic push unit (53), which includes a push pin (531), a push pin seat (532) and a return spring (533). The push pins (531) are evenly distributed at the bottom of the lower cavity (32). The lower end of the push pin (531) passes through the guide hole (21) of the lower mold base (2) and is connected to the push pin seat (532). The return spring (533) is sleeved on the outside of the push pin (531), and its two ends abut against the spring mounting groove of the lower mold base (2) and the spring mounting groove of the push pin seat (532) respectively.

5. The magnetic tile compaction mold with anti-sticking and easy separation according to claim 1, characterized in that: It also includes the cavity assembly (3), which includes an upper cavity (31) and a lower cavity (32). The upper cavity (31) is fixed to the bottom of the upper mold base (1) by bolts, and the lower cavity (32) is fixed to the top of the lower mold base (2) by bolts. After the upper cavity (31) and the lower cavity (32) are molded together, a forming cavity (33) matching the shape of the magnetic tile is formed.

6. The magnetic tile compaction mold with anti-sticking and easy separation according to claim 5, characterized in that: The nozzles (522) of the upper cavity (31) and the lower cavity (32) are distributed vertically and vertically, and the nozzles (522) are flat.

7. The magnetic tile compaction mold with anti-sticking and easy separation according to claim 5, characterized in that: The bottom of the upper cavity (31) is an arc-shaped concave surface, and the top of the lower cavity (32) is an arc-shaped convex surface. The arc-shaped surfaces of the two are respectively matched with the outer contour and inner contour of the magnetic tile.

8. The magnetic tile compaction mold with anti-sticking and easy separation according to claim 1, characterized in that: It also includes a guide assembly (4), which is connected between the upper mold base (1) and the lower mold base (2). The guide assembly (4) includes a guide post (41) and a guide sleeve (42) that are in sliding fit. The guide components (4) are provided in multiple sets and are uniformly arranged along the shape trajectory of the upper mold base (1) and the lower mold base (2).

9. The magnetic tile compaction mold with anti-sticking and easy separation according to claim 1, characterized in that: It also includes the pressure regulating assembly (6), which includes a pressure sensor (61), a pressure regulator (62) and a controller (63). The pressure sensor (61) is evenly embedded in the inner wall of the upper cavity (31) and the lower cavity (32). The pressure sensor (61) is electrically connected to the controller (63) through a signal line (64). The controller (63) is electrically connected to the pressure regulator (62) through a control line (65). The pressure regulator (62) is connected to the compaction drive mechanism (7).

10. The working method of the magnetic tile compaction mold for easy separation of anti-sticking molds according to any one of claims 1-9, characterized in that, Includes the following steps: S1: Mold pretreatment, check the sliding flexibility of the guide assembly (4), verify the smoothness of the gas blowing unit (52), and set the molding parameters; S2: Blank filling, the magnetic tile powder blank is evenly filled into the lower cavity (32). S3: Mold closing and compaction, upper mold base (1) moves down to close the mold, pressure adjustment component (6) adjusts the pressure of molding cavity (33) to reach the set threshold evenly and maintain the compaction state; S4: Pre-loosening preparation, the upper mold base (1) is slightly raised to form a pre-loosening gap; S5: Auxiliary parting, gas blowing unit (52) sprays compressed air, elastic push unit (53) pushes the blank with the ejector pin (531); S6: Complete parting, the upper mold base (1) continues to move upward until complete separation, and the blank is removed; S7: Reset and clean, shut down the gas blowing unit (52), reset the ejector pin (531), and clean the residual blank in the cavity.

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