Automatic auxiliary tool for hot compression molding of polyimide

Abstract

The polyimide hot compression molding automatic auxiliary tool comprises a mold and an auxiliary tool, the mold comprises a concentric-square-shaped mold body, an upper mold body and a lower mold body, a through cavity is formed in the concentric-square-shaped mold body, and the upper mold body and the lower mold body can be arranged in the cavity in a penetrating mode to form a mold cavity; the auxiliary tool comprises a rack, a mold fixing mechanism, a mold grabbing mechanism, a material moving mechanism, a mold cleaning mechanism and a feeding mechanism, the mold grabbing mechanism comprises an upper mold grabbing mechanism and a lower mold grabbing mechanism, and the mold cleaning mechanism comprises an upper and lower mold cleaning mechanism, an upper and lower mold coating mechanism, a concentric-square-shaped mold cleaning mechanism and a concentric-square-shaped mold coating mechanism. By means of the arrangement, the actions of mold cleaning, release agent smearing, powder filling and the like in the hot mold pressing process can be automatically achieved, and a means is provided for continuous and automatic production of polyimide hot mold pressing.

Description

Technical Field

[0001] The invention specifically relates to an automated auxiliary tooling for hot compression molding of polyimide. Background Art

[0002] Polyimide has excellent high temperature resistance, as well as excellent weather resistance, electrical insulation, wear resistance, and high temperature radiation resistance. It is widely used in high-tech fields such as aviation, aerospace, electrical appliances, machinery, chemicals, microelectronics, instrumentation, petrochemicals, and measurement. The molding temperature of polyimide is relatively high, and two processes are commonly used for molding: one is autoclave molding; the other is hot compression molding. Among them, polyimide hot compression molding is a process in which dry polyimide powder is added to the mold and molded under high temperature and high pressure. In the hot compression molding process, powder filling, mold cleaning, and mold release agent application are related to molding quality and production efficiency.

[0003] For example, the patents "A release agent spraying mechanism for polyimide hot pressing processing" (CN221772601U), "A release agent coating device" (CN202241557U) and "A release agent spraying device and spraying method" (CN109483704B) all proposed solutions for coating release agents; the patent "A mold cleaning tool" (CN217990175U) proposed a solution for using a cleaning pump to spray cleaning liquid to clean the mold. The prior art only carries out auxiliary tooling design for a single link, which is difficult to meet the continuous and automated production requirements of the polyimide hot compression molding process production line. Therefore, in response to the above technical problems, an automated auxiliary tooling for polyimide hot compression molding is proposed. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention proposes an automated auxiliary tooling for polyimide hot molding, which can automatically realize actions such as cleaning the mold, applying a release agent and filling powder during the hot molding process, providing a means for continuous automated production of polyimide hot molding.

[0005] A polyimide hot molding automation auxiliary tooling, comprising a mold and an auxiliary tooling, wherein the mold comprises a round-shaped mold, an upper mold and a lower mold, the round-shaped mold is provided with a through cavity, the upper mold and the lower mold can be inserted into the cavity to form a model cavity, and the auxiliary tooling comprises:

[0006] A frame is provided with a fixed station, and the mold can be placed in the fixed station;

[0007] A mold fixing mechanism is installed on the fixing station and is used to fix the Hui-shaped mold in the fixing station;

[0008] The mold grabbing mechanism includes an upper mold grabbing mechanism and a lower mold grabbing mechanism arranged on the frame, which are used to grab the upper mold and the lower mold in the mold respectively, and enable the upper mold and the lower mold to pass through the U-shaped mold, or retract into the U-shaped mold to form the mold cavity;

[0009] A material moving mechanism is arranged on the frame and is used to remove the material from the lower die when the upper die and the lower die together with the material pass downward out of the circular die;

[0010] A mold cleaning mechanism, comprising an upper and lower mold cleaning mechanism, an upper and lower mold coating mechanism, a back-shaped mold cleaning mechanism and a back-shaped mold coating mechanism arranged on the frame, wherein the upper and lower mold cleaning mechanism and the upper and lower mold coating mechanism are used to clean and coat the upper mold and the lower mold, and the back-shaped mold cleaning mechanism and the back-shaped mold coating mechanism are used to clean and coat the back-shaped mold; and

[0011] A feeding mechanism is arranged on the frame and is used for adding powder into the cavity when the lower die is retracted into the U-shaped die.

[0012] The beneficial effects of the above-mentioned polyimide hot compression molding automated auxiliary tooling are:

[0013] After the molded mold is placed in a fixed station, the mold fixing mechanism is controlled to fix it, and then the upper mold grabbing mechanism and the lower mold grabbing mechanism are controlled to grab the upper mold and the lower mold respectively, and drive the upper mold and the lower mold together with the material to pass downward out of the Hui-shaped mold, and then the material moving mechanism is controlled to remove the material from the lower mold. When the material is removed from the lower mold, the upper mold grabbing mechanism and the lower mold grabbing mechanism are controlled to drive the upper mold and the lower mold to pass upward out of the Hui-shaped mold, and then the upper and lower mold cleaning mechanisms and the upper and lower mold coating mechanisms are controlled to clean and coat the upper and lower molds, and then the lower mold grabbing mechanism is controlled to drive the lower mold to pass downward out of the Hui-shaped mold. The mold is outside the character mold, and then the mold cleaning mechanism and the mold coating mechanism are controlled to clean and coat the mold. After the cleaning and coating of the mold is completed, the lower mold grasping mechanism is controlled to drive the lower mold to retract upward into the mold, and then the feeding mechanism is controlled to add powder into the cavity. After the powder is added, the upper mold grasping mechanism is controlled to drive the upper mold to retract downward into the mold to complete the mold closing, and finally the mold fixing mechanism is controlled to cancel the fixation of the mold after the mold closing. It can automatically realize the actions of cleaning the mold, applying the release agent and filling the powder during the hot molding process, providing a means for the continuous and automated production of polyimide hot molding.

[0014] In yet another embodiment, the mold fixing mechanism includes a striking telescopic push rod and a fixed telescopic push rod; the striking telescopic push rod is arranged at the front side of the fixing station, and the fixed telescopic push rod is arranged at the left side of the fixing station.

[0015] In another embodiment, the upper mold grasping mechanism includes a connecting plate and a first bolt; the connecting plate is liftably arranged on a bracket on the upper part of the frame, the first bolt is rotatably arranged at the bottom end of the connecting plate, and can be threadedly connected to the first screw hole at the top end of the upper mold, the first bolt is driven to rotate by a motor, and two groups of first positioning shafts are relatively arranged at the bottom end of the connecting plate, and the two groups of first positioning shafts can be passed through the two groups of first positioning holes at the top end of the upper mold.

[0016] In another embodiment, the lower mold grasping mechanism includes a lower mold claw and a second bolt; the lower mold claw is liftably arranged on a fixed rod at the lower part of the frame, the second bolt is rotatably arranged at the top of the lower mold claw, and can be threadedly connected with the second screw hole at the bottom end of the lower mold, the second bolt is driven to rotate by a motor, and two groups of second positioning shafts are relatively arranged at the top of the lower mold claw, and the two groups of second positioning shafts can be passed through the two groups of second positioning holes at the bottom end of the lower mold.

[0017] In another embodiment, the material moving mechanism includes a material push rod; the material push rod is horizontally slidable on a fixed block at the bottom of the frame, and is located on one side of the material when the upper mold and the lower mold together with the material pass downward out of the U-shaped mold.

[0018] In another embodiment, the upper and lower mold cleaning mechanism includes a first frame, a first guide block and a cleaning brush; the first frame can be horizontally and laterally slidably set on the frame, and can be located between the upper mold and the lower mold, the first guide block can be raised and lowered on the first frame, and cleaning grooves are provided at the top and bottom ends, and multiple groups of cleaning brushes are rotatably provided on both sides and the bottom of the two groups of cleaning grooves, and the multiple groups of cleaning brushes are driven to rotate by motors respectively, and the lifting of the first guide block can make the upper mold and the lower mold pass through the cleaning groove in turn and contact with the cleaning brush.

[0019] In another embodiment, the upper and lower mold coating mechanism includes a second frame, a second guide block and a coating groove; one end of the second frame is connected to one end of the first frame and can be located between the upper mold and the lower mold, the second guide block is arranged on the second frame in a liftable manner, the top and bottom ends of the second guide block are provided with the coating groove adapted to the size of the upper mold and the lower mold, the coating groove is brush-shaped all around and on the bottom, the inner surface of the coating groove is connected to the release agent through a pipe, and the lifting of the second guide block can make the upper mold and the lower mold pass through the coating groove in sequence.

[0020] In another embodiment, the U-shaped mold cleaning mechanism includes a third frame, a third guide block, a mounting guide block and a mold cleaning head; one end of the third frame is connected to the other end of the second frame and can be located above the U-shaped mold, the third guide block can be raised and lowered on the third frame, the mounting guide block can be horizontally and longitudinally slid on the third guide block, the film cleaning head is rotatably arranged at the bottom end of the mounting guide block, and is driven to rotate by a motor, and the descent of the third guide block can enable the film cleaning head to pass through the cavity.

[0021] In another embodiment, the U-shaped mold coating mechanism includes a fourth frame, a fourth guide block, a coating brush and a scraper plate; one end of the fourth frame is connected to the other end of the third frame and can be located above the U-shaped mold, the fourth guide block is liftably arranged on the fourth frame, the bottom end of the fourth guide block is provided with the coating brush adapted to the size of the cavity, the interior of the coating brush is connected to the release agent through a pipeline, the fourth guide block is lowered to enable the coating brush to pass through the cavity, and the bottom of the other end of the fourth frame is provided with the scraper plate that can abut against the top surface of the U-shaped mold.

[0022] In another embodiment, the feeding mechanism includes a raw material hopper and a receiving hopper, the raw material hopper is arranged on the frame, the receiving hopper is inclined and slidably arranged on the frame, and a discharge pipe is arranged at the lower end, the receiving hopper slides to the high end so that the receiving hopper can be located below the discharge port of the raw material hopper, and the receiving hopper slides to the low end so that the discharge end of the discharge pipe can be located above the cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the specific implementation of the present invention, the following will briefly introduce the drawings required for use in the specific implementation. In all the drawings, each element or part is not necessarily drawn according to the actual scale.

[0024] Figure 1 A schematic diagram of the three-dimensional structure of an automated auxiliary tooling for polyimide hot compression molding provided by one embodiment of the present invention;

[0025] Figure 2 for Figure 1 A front view of a polyimide hot compression molding automated auxiliary tooling shown;

[0026] Figure 3 for Figure 1 A right view of a polyimide hot compression molding automated auxiliary tooling shown;

[0027] Figure 4 for Figure 1 A top view of a partially cutaway polyimide hot compression molding automated auxiliary tooling is shown;

[0028] Figure 5 for Figure 1 A schematic diagram of the structure of a mold grabbing mechanism in an automated auxiliary tooling for polyimide hot compression molding is shown;

[0029] Figure 6 for Figure 1 A structural schematic diagram of a material transfer mechanism in an automated auxiliary tooling for polyimide hot compression molding is shown;

[0030] Figure 7 for Figure 1 The schematic diagram of the structure of the upper and lower mold cleaning mechanism in the automated auxiliary tooling for polyimide hot compression molding is shown;

[0031] Figure 8 for Figure 1 The schematic diagram of the structure of the upper and lower mold coating mechanism in the automated auxiliary tooling for polyimide hot compression molding is shown;

[0032] Fig. 9 for Figure 1 The schematic diagram of the structure of the cleaning mechanism of the circular mold in the automatic auxiliary tooling of polyimide hot compression molding is shown;

[0033] Fig.10 for Figure 1 A schematic diagram of the structure of some components of a back-shaped mold cleaning mechanism in an automated auxiliary tooling for polyimide hot compression molding is shown;

[0034] Fig.11 for Figure 1 The schematic diagram of the structure of the film coating mechanism of the round-shaped mold in the automated auxiliary tooling for polyimide hot compression molding is shown;

[0035] Fig.12 for Figure 1 A schematic diagram of the structure of a feeding mechanism in an automated auxiliary tooling for polyimide hot compression molding is shown;

[0036] Fig.13 for Figure 1 A schematic diagram of the structure of a mold moving mechanism in an automated auxiliary tooling for polyimide hot compression molding is shown;

[0037] Fig.14 for Figure 1 The figure shows a schematic diagram of the structure of a material collection component in an automated auxiliary tooling for polyimide hot compression molding.

[0038] Reference numerals:

[0039] 1. Frame; 11. Fixed station; 12. Bracket; 13. Fixed rod; 14. Fixed block; 15. Guide shaft; 16. Second screw rod; 17. Fixed shaft; 18. Ninth screw rod;

[0040] 2. Mold fixing mechanism; 21. Tap the telescopic push rod; 22. Fix the telescopic push rod;

[0041] 3. Upper die grabbing mechanism; 31. Hydraulic telescopic cylinder; 32. Connecting plate; 33. First bolt; 34. First positioning shaft;

[0042] 4. Lower die grabbing mechanism; 41. Lower die clamping claw; 42. First screw rod; 43. Second bolt; 44. Second positioning shaft;

[0043] 5. Material transfer mechanism; 51. Material push rod; 52. Electric telescopic rod; 53. First conveyor belt; 54. Second conveyor belt; 55. Material storage box;

[0044] 6. Upper and lower mold cleaning mechanism; 61. first frame; 62. first guide block; 63. cleaning brush; 64. first guide rod; 65. cleaning slot; 66. third screw rod;

[0045] 7. upper and lower mold coating mechanism; 71. second frame; 72. second guide block; 73. coating groove; 74. second guide rod; 75. fourth screw rod;

[0046] 8. Back-shaped mold cleaning mechanism; 81. Third frame; 82. Third guide block; 83. Installing guide block; 84. Mold cleaning head; 85. Third guide rod; 86. Fourth guide rod; 87. Fifth screw rod; 88. Sixth screw rod;

[0047] 9. Huizi mold coating mechanism; 91. Fourth frame; 92. Fourth guide block; 93. Coating brush; 94. Powder scraper; 95. Fifth guide rod; 96. Seventh screw rod;

[0048] 10. Feeding mechanism; 101. Raw material hopper; 102. Slide; 103. Receiving hopper; 104. Discharging pipe; 105. Discharging port; 106. Eighth screw rod;

[0049] 20. Mould moving mechanism; 201. Sliding track; 202. Input conveyor belt; 203. Output conveyor belt; 204. Shifting block; 205. Telescopic push rod of the first mould; 206. Telescopic push rod of the second mould. DETAILED DESCRIPTION

[0050] The following embodiments of the technical solution of the present invention are described in detail in conjunction with the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and are therefore only used as examples, and cannot be used to limit the protection scope of the present invention.

[0051] See also Figures 1 to 4In one embodiment, a polyimide hot compression molding automated auxiliary tooling includes a mold and an auxiliary tooling, the mold includes a U-shaped mold, an upper mold and a lower mold, the U-shaped mold is provided with a through cavity, the upper mold and the lower mold can be inserted into the cavity to form a model cavity, the auxiliary tooling includes a frame 1, a mold fixing mechanism 2, a mold grabbing mechanism, a material moving mechanism 5, a mold cleaning mechanism and a feeding mechanism 10.

[0052] Among them, the frame 1 is provided with a fixed station 11, and the mold can be placed in the fixed station 11. The mold fixing mechanism 2 is installed on the fixed station 11, and is used to fix the Hui-shaped mold in the fixed station 11. The mold grabbing mechanism includes an upper mold grabbing mechanism 3 and a lower mold grabbing mechanism 4 arranged on the frame 1, which are used to grab the upper mold and the lower mold in the mold respectively, and can make the upper mold and the lower mold pass out of the Hui-shaped mold, or retract into the Hui-shaped mold to form a model cavity. The material moving mechanism 5 is arranged on the frame 1, and is used to remove the material from the lower mold when the upper mold and the lower mold pass downward out of the Hui-shaped mold together with the material. The mold cleaning mechanism includes an upper and lower mold cleaning mechanism 6, an upper and lower mold coating mechanism 7, a Hui-shaped mold cleaning mechanism 8 and a Hui-shaped mold coating mechanism 9 arranged on the frame 1, and the upper and lower mold cleaning mechanism 6 and the upper and lower mold coating mechanism 7 are used to clean and coat the upper mold and the lower mold, and the Hui-shaped mold cleaning mechanism 8 and the Hui-shaped mold coating mechanism 9 are used to clean and coat the Hui-shaped mold. The feeding mechanism 10 is arranged on the frame 1, and is used to add powder into the cavity when the lower mold is retracted into the U-shaped mold.

[0053] In the above embodiment, after the molded mold is placed in the fixed station 11, the mold fixing mechanism 2 is controlled to fix it, and then the upper mold grasping mechanism 3 and the lower mold grasping mechanism 4 are controlled to grasp the upper mold and the lower mold respectively, and drive the upper mold and the lower mold together with the material to pass downward out of the U-shaped mold, and then the material moving mechanism 5 is controlled to remove the material from the lower mold. After the material is removed from the lower mold, the upper mold grasping mechanism 3 and the lower mold grasping mechanism 4 are controlled to drive the upper mold and the lower mold to pass upward out of the U-shaped mold, and then the upper and lower mold cleaning mechanisms 6 and the upper and lower mold coating mechanisms 7 are controlled to clean and coat the upper mold and the lower mold, and then the lower mold grasping mechanism 4 is controlled to drive the lower mold It passes downward out of the Hui-shaped mold, and then controls the Hui-shaped mold cleaning mechanism 8 and the Hui-shaped mold coating mechanism 9 to clean and coat the Hui-shaped mold. After the cleaning and coating of the Hui-shaped mold are completed, the lower mold grasping mechanism 4 is controlled to drive the lower mold to retract upward into the Hui-shaped mold, and then the feeding mechanism 10 is controlled to add powder into the cavity. After the powder is added, the upper mold grasping mechanism 3 is controlled to drive the upper mold to retract downward into the Hui-shaped mold to complete the mold closing, and finally the mold fixing mechanism 2 is controlled to cancel the fixation of the mold after the mold closing. It can automatically realize the actions of cleaning the mold, applying the release agent and filling the powder during the hot molding process, providing a means for the continuous and automated production of polyimide hot molding.

[0054] See also Figure 4In one embodiment, the mold fixing mechanism 2 includes a knocking telescopic push rod 21 and a fixed telescopic push rod 22; the knocking telescopic push rod 21 is arranged at the front side of the fixed station 11, and the fixed telescopic push rod 22 is arranged at the left side of the fixed station 11. In the above embodiment, after the molded mold is placed in the fixed station 11, the knocking telescopic push rod 21 is first controlled to extend and push the mold to move to the rear side of the fixed station 11, and then the fixed telescopic push rod 22 is controlled to extend and push the mold to move to the right side of the fixed station 11. When the mold moves to abut against the rear and right sides of the fixed station 11, the knocking telescopic push rod 21 and the fixed telescopic push rod 22 can clamp and fix the mold, which is convenient for fixing the mold, and the mold can be canceled by controlling the knocking telescopic push rod 21 and the fixed telescopic push rod 22 to contract, which is convenient for canceling the fixing of the mold. At the same time, by controlling the knocking telescopic push rod 21 to reciprocate and extend to knock the mold, the powder can be evenly distributed in the cavity after the feeding mechanism 10 adds powder into the cavity, thereby improving the hot compression molding effect of polyimide.

[0055] Please also read Figure 1 , Figure 2 and Fig.13 Specifically in the above embodiment, a mold moving mechanism 20 is also provided on the frame 1, and the mold moving mechanism 20 is used to move the molded mold to the fixed station 11 or move the molded mold out of the fixed station 11.

[0056] Specifically, the mold moving mechanism 20 includes a sliding track 201, an input conveyor belt 202, an output conveyor belt 203, a shifting block 204, a first mold telescopic push rod 205 and a second mold telescopic push rod 206; the sliding track 201 is horizontally and transversely arranged on the frame 1, and one end is connected to the left front part of the fixed station 11, the input conveyor belt 202 and the output conveyor belt 203 are horizontally and longitudinally arranged on the frame 1, and one end extends into the sliding track 201, the top surface of the input conveyor belt 202 and the output conveyor belt 203 is flush with the bottom surface of the sliding track 201, and multiple groups of fixed shafts 17 are arranged on the frame 1, and the shifting block 204 is horizontally and transversely slidably arranged on the multiple groups of fixed shafts 17, and the positions Above the sliding track 201, a ninth screw rod 18 parallel to the fixed axis 17 is rotatably arranged on the frame 1. The ninth screw rod 18 is threadedly connected to the shift block 204 and is driven to rotate by a motor. The sliding of the shift block 204 can drive the molded mold to be removed from the input conveyor belt 202, and move it to the fixed station 11 along the sliding track 201 through the output conveyor belt 203. The first mold telescopic push rod 205 is arranged at the rear side of the fixed station 11, and the second mold telescopic push rod 206 is arranged on the right side of the fixed station 11. The extension of the second mold telescopic push rod 206 can push the molded mold to be removed from the fixed station 11, and move it to the output conveyor belt 203 through the sliding track 201.

[0057] In the above embodiment, the molded mold is placed on the input conveyor belt 202, and then the input conveyor belt 202 is started to drive the molded mold to move into the sliding track 201, and then the motor is started to drive the ninth screw rod 18 to rotate and drive the shift block 204 to move, and the shift block 204 moves to drive the molded mold to be removed from the input conveyor belt 202, and moves along the sliding track 201 to the fixed station 11 through the output conveyor belt 203, so that the molded mold is moved to the fixed station 11 for convenience; by controlling the extension of the first mold telescopic push rod 205 The mold after mold closing is extended to move to the front side of the fixed station 11, and then the mold after mold closing is driven to move to the left side of the fixed station 11 by controlling the extension of the second mold telescopic push rod 206, so that the mold after mold closing is moved to the output conveyor belt 203 through the sliding track 201, and then the output conveyor belt 203 is started to move the mold after mold closing out of the sliding track 201, which is convenient for moving the mold after mold closing out of the fixed station 11, and the setting of the input conveyor belt 202 and the output conveyor belt 203 can avoid confusing the molded mold with the mold after mold closing.

[0058] See also Figures 1 to 3 and Figure 5 In one embodiment, the upper die grabbing mechanism 3 includes a connecting plate 32 and a first bolt 33; the connecting plate 32 is movably arranged on the bracket 12 at the upper part of the frame 1, the first bolt 33 is rotatably arranged at the bottom end of the connecting plate 32, and can be threadedly connected with the first screw hole at the top end of the upper die, the first bolt 33 is driven to rotate by a motor, and two groups of first positioning shafts 34 are relatively arranged at the bottom end of the connecting plate 32, and the two groups of first positioning shafts 34 can be inserted into the two groups of first positioning holes at the top end of the upper die. Specifically, a hydraulic telescopic cylinder 31 is vertically arranged on the bracket 12, and the bottom end of the telescopic end of the hydraulic telescopic cylinder 31 is connected to the top end of the connecting plate 32.

[0059] In the above embodiment, the upper mold can be grabbed by controlling the extension of the hydraulic telescopic cylinder 31 to drive the connecting plate 32 to move downward, and the first bolt 33 is driven by the motor to rotate so that the first bolt 33 is threadedly connected with the first screw hole. After grabbing the upper mold, the hydraulic telescopic cylinder 31 is controlled to contract or extend to drive the upper mold to pass through or retract into the mold, and the first positioning shaft 34 and the first positioning hole cooperate to prevent the upper mold from rotating after passing through the mold. Grabbing the upper mold and driving it to pass through or retract into the mold is convenient and stable.

[0060] See also Figures 1 to 3 and Figure 5In one embodiment, the lower die grabbing mechanism 4 includes a lower die clamping claw 41 and a second bolt 43; the lower die clamping claw 41 is rotatably arranged on the fixed rod 13 at the lower part of the frame 1, the second bolt 43 is rotatably arranged at the top of the lower die clamping claw 41, and can be threadedly connected with the second screw hole at the bottom of the lower die, the second bolt 43 is driven to rotate by a motor, and two groups of second positioning shafts 44 are relatively arranged at the top of the lower die clamping claw 41, and the two groups of second positioning shafts 44 can be inserted into the two groups of second positioning holes at the bottom of the lower die. Specifically, a first screw rod 42 is rotatably arranged parallel to one side of the bottom end of the fixed rod 13, the first screw rod 42 is threadedly connected with the lower die clamping claw 41, and the first screw rod 42 is driven to rotate by a motor.

[0061] In the above embodiment, the first screw rod 42 is driven by a motor to rotate forward to drive the lower mold claw 41 to move upward, and the second bolt 43 is driven by a motor to rotate so that the second bolt 43 can be threadedly connected with the second screw hole, thereby grabbing the lower mold. After grabbing the lower mold, the motor is controlled to drive the first screw rod 42 to reverse or rotate forward to drive the lower mold to pass through or retract into the mold, and the second positioning shaft 44 and the second positioning hole cooperate to prevent the lower mold from rotating after passing through the mold. Grabbing the lower mold and driving the lower mold to pass through or retract into the mold is convenient and stable.

[0062] See also Figure 1 , Figure 2 and Figure 6 In one embodiment, the material moving mechanism 5 includes a material push rod 51; the material push rod 51 is horizontally and laterally slidably arranged on the fixed block 14 at the lower part of the frame 1, and is located on one side of the material when the upper die and the lower die together with the material pass downward out of the circular die. Specifically, a T-shaped chute is provided at the bottom of the fixed block 14, a T-shaped slider is provided at the top of the material push rod 51, and the T-shaped slider is horizontally and laterally slidably arranged in the T-shaped chute, and an electric telescopic rod 52 is horizontally and laterally arranged on one side of the fixed block 14, and the telescopic end of the electric telescopic rod 52 is connected to the material push rod 51.

[0063] In the above embodiment, when the upper mold grasping mechanism 3 and the lower mold grasping mechanism 4 drive the upper mold and the lower mold together with the material to pass downward out of the U-shaped mold, the electric telescopic rod 52 extends to drive the material push rod 51 to move. The movement of the material push rod 51 can drive the material to move and remove the material from the lower mold, making it convenient to remove the material on the lower mold.

[0064] Please also read Fig.14Specifically in the above embodiment, the material moving mechanism 5 also includes a material collecting assembly, which includes a first conveyor belt 53 and a second conveyor belt 54; the first conveyor belt 53 is located below the frame 1, and a material storage box 55 is placed on the first conveyor belt 53. A plurality of storage slots are provided on the top of the material storage box 55. The first conveyor belt 53 is used to drive the material storage box 55 to move, and the second conveyor belt 54 is provided at the lower part of the frame 1 to receive the material removed from the lower mold and transport the material to the storage slot. When the material is removed from the lower mold and falls onto the second conveyor belt 54, the second conveyor belt 54 can drive the material to move and fall into the storage slot. When the storage slot is full, the first conveyor belt 53 drives the material storage box 55 to move so that another group of storage slots corresponds to the second conveyor belt 54, and the material can be collected again. It is convenient and labor-saving to collect materials.

[0065] See also Figure 1 , Figure 2 and Figure 7 In one embodiment, the upper and lower mold cleaning mechanism 6 includes a first frame 61, a first guide block 62 and a cleaning brush 63; the first frame 61 can be horizontally slidably set on the frame 1, and can be located between the upper mold and the lower mold, the first guide block 62 can be raised and lowered on the first frame 61, and a cleaning groove 65 is provided at the top and bottom ends, and multiple groups of cleaning brushes 63 are rotatably provided on both sides and the bottom of the two groups of cleaning grooves 65, and the multiple groups of cleaning brushes 63 are respectively driven to rotate by motors, and the lifting of the first guide block 62 can make the upper mold and the lower mold pass through the cleaning groove 65 in turn and contact the cleaning brush 63. Specifically, multiple groups of guide shafts 15 are arranged on the frame 1, and the first frame 61 can be horizontally slidably arranged on the multiple groups of guide shafts 15. A second screw rod 16 parallel to the guide shaft 15 is rotatably arranged on the frame 1, and the second screw rod 16 is threadedly connected to the first frame 61, and the second screw rod 16 is driven to rotate by a motor. Multiple groups of first guide rods 64 are vertically arranged on the first frame 61, and the first guide block 62 is slidably arranged on the multiple groups of first guide rods 64 along the vertical direction. A third screw rod 66 is vertically rotatably arranged on the first frame 61, and the third screw rod 66 is threadedly connected to the first guide block 62, and the third screw rod 66 is driven to rotate by a motor.

[0066] In the above embodiment, when it is necessary to clean the upper mold and the lower mold, first control the upper mold grasping mechanism 3 and the lower mold grasping mechanism 4 to drive the upper mold and the lower mold to pass upward and out of the U-shaped mold, and then control the motor to drive the second screw rod 16 to rotate forward and control multiple groups of motors to drive multiple groups of cleaning brushes 63 to rotate. The second screw rod 16 rotates forward to drive the first frame 61 to move between the upper mold and the lower mold, and makes the two groups of cleaning grooves 65 correspond to the upper mold and the lower mold respectively. Then control the motor to drive the third screw rod 66 to rotate forward to drive the first guide block 62 to rise so that the upper mold passes through the cleaning groove 65 at the upper end and contacts with the rotating cleaning brush 63 to clean the upper mold. Then control the motor to drive the third screw rod 66 to reverse and drive the first guide block 62 to descend so that the lower mold passes through the cleaning groove 65 at the lower end and contacts with the rotating cleaning brush 63 to clean the lower mold, which is convenient for cleaning the upper mold and the lower mold.

[0067] See also Figure 1 , Figure 2 and Figure 8 In one embodiment, the upper and lower mold coating mechanism 7 includes a second frame 71, a second guide block 72 and a coating groove 73; one end of the second frame 71 is connected to one end of the first frame 61 and can be located between the upper mold and the lower mold. The second guide block 72 is arranged on the second frame 71 in a liftable manner. The top and bottom ends of the second guide block 72 are provided with coating grooves 73 that are adapted to the sizes of the upper mold and the lower mold. The coating groove 73 is brush-shaped all around and on the bottom side. The inner surface of the coating groove 73 is connected to the release agent through a pipeline. The lifting of the second guide block 72 can make the upper mold and the lower mold pass through the coating groove 73 in sequence. Specifically, the second frame 71 is horizontally and laterally slidably set on multiple groups of guide shafts 15 and is connected to the first frame 61. Multiple groups of second guide rods 74 are vertically set on the second frame 71. The second guide block 72 is slidably set on the multiple groups of second guide rods 74 along the vertical direction. A fourth screw rod 75 is vertically and rotatably set on the second frame 71. The fourth screw rod 75 is threadedly connected to the second guide block 72, and the fourth screw rod 75 is driven to rotate by a motor.

[0068] In the above embodiment, after the upper mold and the lower mold are cleaned, the control motor drives the second screw rod 16 to rotate forward to drive the first frame 61 to drive the second frame 71 to move between the upper mold and the lower mold, and make the two groups of coating grooves 73 correspond to the upper mold and the lower mold respectively, and then the control motor drives the fourth screw rod 75 to rotate forward to drive the second guide block 72 to rise so that the upper mold can pass through the coating groove 73 at the upper end to perform coating operations on the upper mold, and then the control motor drives the fourth screw rod 75 to reverse and drive the second guide block 72 to descend so that the lower mold can pass through the coating groove 73 at the lower end to perform coating operations on the lower mold, which is convenient for coating the upper and lower molds.

[0069] See also Figure 1 , Figure 2 , Fig. 9 and Fig.10In one embodiment, the U-shaped mold cleaning mechanism 8 includes a third frame 81, a third guide block 82, a mounting guide block 83 and a mold cleaning head 84; one end of the third frame 81 is connected to the other end of the second frame 71, and can be located above the U-shaped mold, the third guide block 82 can be raised and lowered on the third frame 81, the mounting guide block 83 can be horizontally and longitudinally slidably set on the third guide block 82, the mold cleaning head 84 can be rotatably set at the bottom end of the mounting guide block 83, and is driven to rotate by a motor, and the third guide block 82 descends to enable the mold cleaning head 84 to pass through the cavity. Specifically, the third frame 81 is horizontally and laterally slidably arranged on multiple groups of guide shafts 15 and is connected to the second frame 71. Multiple groups of third guide rods 85 are vertically arranged on the third frame 81. The third guide block 82 is slidably arranged on the multiple groups of third guide rods 85 along the vertical direction. A fifth screw rod 87 is vertically and rotatably arranged on the third frame 81. The fifth screw rod 87 is threadedly connected to the third guide block 82. Multiple groups of fourth guide rods 86 are arranged on the third guide block 82. The mounting guide block 83 is horizontally and longitudinally slidably arranged on multiple groups of fourth guide rods 86. A sixth screw rod 88 parallel to the fourth guide rod 86 is rotatably arranged on the third guide block 82. The sixth screw rod 88 is threadedly connected to the mounting guide block 83. The fifth screw rod 87 and the sixth screw rod 88 are respectively driven to rotate by motors.

[0070] In the above embodiment, after the coating of the upper and lower molds is completed, the lower mold grasping mechanism 4 is controlled to drive the lower mold downward and out of the U-shaped mold, and then the motor is controlled to drive the second screw rod 16 to rotate forward to drive the first frame 61 to drive the third frame 81 to move above the U-shaped mold, and make the mold cleaning head 84 correspond to the cavity, and then the motor is controlled to drive the fifth screw rod 87 to rotate forward to drive the third guide block 82 to descend so that the mold cleaning head 84 is inserted into the cavity, and then the motor is controlled to drive the second screw rod 16 and the sixth screw rod 88 to rotate forward or reverse respectively, and the mold cleaning head 84 can be driven by the third guide block 82 and the installation guide block 83 to move horizontally and longitudinally, so that the mold cleaning head 84 can move along the circumference of the cavity, and while the mold cleaning head 84 moves along the circumference of the cavity, the motor is controlled to drive the mold cleaning head 84 to rotate to clean the cavity of the U-shaped mold, which is convenient for cleaning the U-shaped mold.

[0071] See also Figure 1 , Figure 2 and Fig.11In one embodiment, the film coating mechanism 9 of the U-shaped mold includes a fourth frame 91, a fourth guide block 92, a film coating brush 93 and a scraper plate 94; one end of the fourth frame 91 is connected to the other end of the third frame 81 and can be located above the U-shaped mold, the fourth guide block 92 is arranged on the fourth frame 91 in a liftable manner, a film coating brush 93 adapted to the size of the cavity is arranged at the bottom of the fourth guide block 92, the interior of the film coating brush 93 is connected to the release agent through a pipeline, the fourth guide block 92 descends to enable the film coating brush 93 to pass through the cavity, and a scraper plate 94 that can abut against the top surface of the U-shaped mold is arranged at the bottom of the other end of the fourth frame 91. Specifically, the fourth frame 91 is horizontally and laterally slidably set on multiple groups of guide shafts 15 and is connected to the third frame 81. Multiple groups of fifth guide rods 95 are vertically set on the fourth frame 91. The fourth guide block 92 is slidably set on the multiple groups of fifth guide rods 95 along the vertical direction. A seventh screw rod 96 is vertically and rotatably set on the fourth frame 91. The seventh screw rod 96 is threadedly connected to the fourth guide block 92, and the seventh screw rod 96 is driven to rotate by a motor.

[0072] In the above embodiment, after the cleaning of the U-shaped mold is completed, the control motor drives the second screw rod 16 to rotate forward to drive the first frame 61 to drive the fourth frame 91 to move above the U-shaped mold, and make the coating brush 93 correspond to the cavity, and then control the motor to drive the seventh screw rod 96 to rotate forward to drive the fourth guide block 92 to descend so that the coating brush 93 can pass through the cavity to coat the cavity, which is convenient for coating the U-shaped mold. At the same time, after the feeding mechanism 10 adds powder into the cavity, the fourth frame 91 moves to drive the powder scraper plate 94 to move, and the powder scraper plate 94 moves to abut against the top surface of the U-shaped mold to scrape off excess powder, which is convenient for scraping off excess powder.

[0073] See also Figures 1 to 3 and Fig.12 In one embodiment, the feeding mechanism 10 includes a raw material hopper 101 and a receiving hopper 103. The raw material hopper 101 is arranged on the frame 1. The receiving hopper 103 is arranged on the frame 1 in an inclined and sliding manner, and a discharge pipe 104 is arranged at the lower end. When the receiving hopper 103 slides to the high end, the receiving hopper 103 can be located below the discharge port 105 of the raw material hopper 101. When the receiving hopper 103 slides to the low end, the discharge end of the discharge pipe 104 can be located above the cavity. Specifically, a slide 102 is arranged on the frame 1, and an inclined surface is arranged at the top of the slide 102. The receiving hopper 103 is arranged on the inclined surface in an inclined and sliding manner. An eighth screw rod 106 parallel to the inclined surface is rotatably arranged on the inclined surface. The eighth screw rod 106 is threadedly connected to the receiving hopper 103, and the eighth screw rod 106 is driven to rotate by a motor.

[0074] In the above embodiment, after the coating of the back-shaped mold is completed, the lower mold grabbing mechanism 4 is controlled to drive the lower mold to rise and retract the back-shaped mold, and then the raw material hopper 101 is controlled to drop the powder into the receiving hopper 103 through the discharge port 105, and then the motor is controlled to drive the eighth screw rod 106 to rotate forward to drive the receiving hopper 103 to slide to the lower end so that the discharge end of the discharge pipe 104 is located above the cavity. At this time, the powder in the receiving hopper 103 can enter the cavity through the discharge pipe 104, and it is convenient to add powder into the cavity. It can be understood that both the raw material hopper 101 and the receiving hopper 103 are provided with an electrically controlled valve to control the discharge.

[0075] The specific implementation of the above-mentioned polyimide hot compression molding automated auxiliary tooling is as follows:

[0076] By placing the molded mold on the input conveyor belt 202, and then starting the input conveyor belt 202 to drive the molded mold to move into the sliding track 201, and then starting the motor to drive the ninth screw rod 18 to rotate and drive the shift block 204 to move, the shift block 204 moves and drives the molded mold to be removed from the input conveyor belt 202, and moves along the sliding track 201 to the fixed station 11 through the output conveyor belt 203, and then controlling the telescopic push rod 21 to extend and push the mold to move to the rear side of the fixed station 11, and then controlling the fixed telescopic push rod 22 to extend and push the mold to move to the right side of the fixed station 11. When the mold moves to abut against the rear and right sides of the fixed station 11, the telescopic push rod 21 and the fixed telescopic push rod 22 can be knocked and fixed to clamp the mold.

[0077] After the molded mold is fixed, the hydraulic telescopic cylinder 31 is controlled to extend to drive the connecting plate 32 to move downward, and the first bolt 33 is driven by the motor to rotate so that the first bolt 33 is threadedly connected with the first screw hole to grab the upper mold, and then the first screw rod 42 is driven by the motor to rotate forward to drive the lower mold claw 41 to move upward, and the second bolt 43 is driven by the motor to rotate so that the second bolt 43 is threadedly connected with the second screw hole to grab the lower mold. After grabbing the upper mold and the lower mold, the hydraulic telescopic cylinder 31 is controlled to extend to drive the upper mold to move downward and the motor drives the first screw rod 42 to reversely drive the lower mold claw 41 to move the lower mold downward. At this time, the upper mold and the lower mold together with the material pass downward out of the Hui-shaped mold, and the material is located on one side of the material push rod 51, and then the electric telescopic rod 52 is controlled to extend to drive the material push rod 51 to move so that the material can be removed from the lower mold, and the material falls onto the second conveyor belt 54, and the second conveyor belt 54 can drive the material to move and fall into the storage tank, which is convenient and labor-saving to collect the material.

[0078] After the material is removed from the lower die, the hydraulic telescopic cylinder 31 is controlled to retract to reset the material push rod 51, and then the hydraulic telescopic cylinder 31 is controlled to retract to drive the upper die to move upward and the motor drives the first screw rod 42 to rotate forward to drive the lower die claw 41 to drive the lower die to move upward, so that the upper die and the lower die pass upward out of the circular die, and then the motor drives the second screw rod 16 to rotate forward and controls multiple groups of motors to drive multiple groups of cleaning brushes 63 to rotate, and the second screw rod 16 rotates forward to drive the first frame 61 to move between the upper die and the lower die, and the two groups of cleaning grooves 65 correspond to the upper die and the lower die respectively. , and then the motor is controlled to drive the third screw rod 66 to rotate forward to drive the first guide block 62 to rise so that the upper mold passes through the cleaning groove 65 at the upper end and contacts the rotating cleaning brush 63 to clean the upper mold. Then the motor is controlled to drive the third screw rod 66 to reverse and drive the first guide block 62 to descend so that the lower mold passes through the cleaning groove 65 at the lower end and contacts the rotating cleaning brush 63 to clean the lower mold. It is convenient to clean the upper and lower molds. After the upper and lower molds are cleaned, the motor is controlled to drive the third screw rod 66 to rotate forward to drive the first guide block 62 to rise and reset.

[0079] Then, the control motor drives the second screw rod 16 to rotate forward to drive the first frame 61 to drive the second frame 71 to move between the upper mold and the lower mold, and make the two groups of coating grooves 73 correspond to the upper mold and the lower mold respectively, and then control the motor to drive the fourth screw rod 75 to rotate forward to drive the second guide block 72 to rise so that the upper mold can pass through the coating groove 73 at the upper end, and then the coating operation can be performed on the upper mold, and then control the motor to drive the fourth screw rod 75 to reverse and drive the second guide block 72 to descend so that the lower mold can pass through the coating groove 73 at the lower end, and then the coating operation can be performed on the lower mold, which is convenient for coating the upper and lower molds. After the coating of the upper and lower molds is completed, the control motor drives the fourth screw rod 75 to rotate forward to drive the second guide block 72 to rise and reset.

[0080] Then, the motor is controlled to drive the first screw rod 42 to reverse and drive the lower mold claw 41 to drive the lower mold downward to pass out of the U-shaped mold, and then the motor is controlled to drive the second screw rod 16 to rotate forward to drive the first frame 61 to drive the third frame 81 to move above the U-shaped mold, and make the mold cleaning head 84 correspond to the cavity, and then the motor is controlled to drive the fifth screw rod 87 to rotate forward to drive the third guide block 82 to descend so that the mold cleaning head 84 is inserted into the cavity, and then the motor is controlled to drive the second screw rod 16 and the sixth screw rod 88 to rotate forward or reverse respectively, and the mold cleaning head 84 can be driven horizontally and longitudinally through the third guide block 82 and the installation guide block 83, so that the mold cleaning head 84 can move along the periphery of the cavity, and while the mold cleaning head 84 moves along the periphery of the cavity, the motor is controlled to drive the mold cleaning head 84 to rotate to clean the cavity of the U-shaped mold, which is convenient for cleaning the U-shaped mold. After the U-shaped mold is cleaned, the motor is controlled to drive the fifth screw rod 87 to reverse and drive the third guide block 82 to rise and reset.

[0081] Then, the control motor drives the second screw rod 16 to rotate forward to drive the first frame 61 to drive the fourth frame 91 to move above the U-shaped mold, and make the coating brush 93 correspond to the cavity, and then control the motor to drive the seventh screw rod 96 to rotate forward to drive the fourth guide block 92 to descend so that the coating brush 93 can pass through the cavity to coat the cavity, which is convenient for coating the U-shaped mold. After the coating of the U-shaped mold is completed, the control motor drives the seventh screw rod 96 to reverse and drive the fourth guide block 92 to rise and reset. When the cleaning coating of the upper mold, the lower mold and the U-shaped mold is completed, the control motor drives the second screw rod 16 to reverse and drive the first frame 61 to reset the second frame 71, the third frame 81 and the fourth frame 91.

[0082] Then, the control motor drives the first screw rod 42 to rotate forward to drive the lower mold claw 41 to drive the lower mold to move upward and retract into the return mold, and then open the electric control valve on the raw material hopper 101 to allow the powder to fall into the receiving hopper 103 through the discharge port 105 and then close the electric control valve. Then, the control motor drives the eighth screw rod 106 to rotate forward to drive the receiving hopper 103 to slide to the lower end so that the discharge end of the discharge pipe 104 is located above the cavity, and then open the electric control valve on the receiving hopper 103 to allow the powder in the receiving hopper 103 to enter the cavity through the discharge pipe 104, which is convenient for adding powder to the cavity. After the adding is completed, the control motor drives the eighth screw rod 106 to reverse and drive the receiving hopper 103 to slide to the high end and reset.

[0083] Finally, by controlling the knocking telescopic push rod 21 to reciprocate and extend to knock the mold, the powder can be evenly distributed in the cavity, thereby improving the hot molding effect of polyimide, and then controlling the motor to drive the second screw rod 16 to rotate forward to drive the first frame 61 to drive the fourth frame 91 to move, and the fourth frame 91 moves to drive the powder scraper 94 to move, and the powder scraper 94 moves to abut against the top surface of the Hui-shaped mold to scrape off excess powder. After scraping off the excess powder, the motor is controlled to drive the second screw rod 16 to reverse and drive the first frame 61 to drive the fourth frame 91 to reset, and then control the hydraulic telescopic cylinder 31 to extend and drive the upper mold to move downward so that the upper mold is retracted into the Hui-shaped mold to complete the mold closing. After the mold closing is completed, the hydraulic telescopic cylinder 31 is controlled to contract and drive the connecting plate 32 to move upward, and the first bolt 33 is driven by the motor to reverse so that the first bolt 33 is separated from the first screw hole to cancel the grabbing of the upper mold, and then the motor drives the first The screw rod 42 reverses to drive the lower mold claw 41 to move downward, and the second bolt 43 is reversed by the motor to separate the second bolt 43 from the second screw hole to cancel the grip on the lower mold, and then the telescopic push rod 21 and the fixed telescopic push rod 22 are controlled to contract to cancel the fixation of the mold after mold closing, and finally the mold after mold closing is driven to move to the front side of the fixed station 11 by controlling the extension of the first mold telescopic push rod 205, and then the mold after mold closing is driven to move to the left side of the fixed station 11 by controlling the extension of the second mold telescopic push rod 206, so that the mold after mold closing is moved to the output conveyor belt 203 through the sliding track 201, and then the output conveyor belt 203 is started to remove the mold after mold closing from the sliding track 201, which can automatically realize the actions of cleaning the mold, applying the release agent and evenly filling the powder during the hot molding process, providing a means for continuous and automated production of polyimide hot molding.

[0084] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein by equivalents. These modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and specification of the present invention.

Claims

1. A polyimide hot compression molding automated auxiliary tooling, characterized in that: The invention comprises a mold and an auxiliary tooling, wherein the mold comprises a Chinese-shaped mold, an upper mold and a lower mold, the Chinese-shaped mold is provided with a through cavity, the upper mold and the lower mold can be inserted into the cavity to form a model cavity, and the auxiliary tooling comprises: The frame (1) is provided with a fixed station (11), and the mold can be placed in the fixed station (11); A mold fixing mechanism (2) is installed on the fixing station (11) and is used to fix the circular mold in the fixing station (11); The mold grabbing mechanism comprises an upper mold grabbing mechanism (3) and a lower mold grabbing mechanism (4) arranged on the frame (1), and is used to grab the upper mold and the lower mold in the mold respectively, and can make the upper mold and the lower mold pass out of the U-shaped mold, or retract into the U-shaped mold to form the mold cavity; A material removal mechanism (5) is arranged on the frame (1) and is used to remove the material from the lower die when the upper die and the lower die together with the material pass downward out of the circular die; A mold cleaning mechanism, comprising an upper and lower mold cleaning mechanism (6), an upper and lower mold coating mechanism (7), a round mold cleaning mechanism (8) and a round mold coating mechanism (9) arranged on the frame (1), wherein the upper and lower mold cleaning mechanism (6) and the upper and lower mold coating mechanism (7) are used to clean and coat the upper mold and the lower mold, and the round mold cleaning mechanism (8) and the round mold coating mechanism (9) are used to clean and coat the round mold; and A feeding mechanism (10) is arranged on the frame (1) and is used to add powder into the cavity when the lower die is retracted into the round die.

2. The polyimide hot compression molding automated auxiliary tooling according to claim 1, characterized in that: The mold fixing mechanism (2) comprises a knocking telescopic push rod (21) and a fixed telescopic push rod (22); the knocking telescopic push rod (21) is arranged on the front side of the fixing station (11), and the fixed telescopic push rod (22) is arranged on the left side of the fixing station (11).

3. The polyimide hot compression molding automation auxiliary tooling according to claim 1, characterized in that: The upper mold grasping mechanism (3) comprises a connecting plate (32) and a first bolt (33); the connecting plate (32) is movably arranged on a bracket (12) on the upper part of the frame (1); the first bolt (33) is rotatably arranged at the bottom end of the connecting plate (32) and can be threadedly connected to the first screw hole at the top end of the upper mold; the first bolt (33) is driven to rotate by a motor; two groups of first positioning shafts (34) are relatively arranged at the bottom end of the connecting plate (32); the two groups of first positioning shafts (34) can be inserted into the two groups of first positioning holes at the top end of the upper mold.

4. The polyimide hot compression molding automation auxiliary tooling according to claim 1, characterized in that: The lower die grasping mechanism (4) comprises a lower die clamping claw (41) and a second bolt (43); the lower die clamping claw (41) is movably arranged on a fixing rod (13) at the lower part of the frame (1); the second bolt (43) is rotatably arranged at the top end of the lower die clamping claw (41) and can be threadedly connected with a second screw hole at the bottom end of the lower die; the second bolt (43) is driven to rotate by a motor; two groups of second positioning shafts (44) are relatively arranged at the top end of the lower die clamping claw (41); the two groups of second positioning shafts (44) can be inserted into the two groups of second positioning holes at the bottom end of the lower die.

5. The polyimide hot compression molding automation auxiliary tooling according to claim 1, characterized in that: The material transfer mechanism (5) comprises a material push rod (51); the material push rod (51) is arranged on a fixed block (14) at the bottom of the frame (1) so as to be horizontally slidable, and is located on one side of the material when the upper die and the lower die together with the material pass downward out of the circular die.

6. The polyimide hot compression molding automation auxiliary tooling according to claim 1, characterized in that: The upper and lower mold cleaning mechanism (6) comprises a first frame (61), a first guide block (62) and a cleaning brush (63); the first frame (61) can be horizontally slidably arranged on the frame (1) and can be located between the upper mold and the lower mold; the first guide block (62) can be raised and lowered on the first frame (61) and has cleaning grooves (65) at the top and bottom; multiple groups of cleaning brushes (63) are rotatably arranged on both sides and the bottom of the two groups of cleaning grooves (65); the multiple groups of cleaning brushes (63) are respectively driven to rotate by a motor; the lifting of the first guide block (62) can make the upper mold and the lower mold pass through the cleaning groove (65) in sequence and contact the cleaning brush (63).

7. The polyimide hot compression molding automated auxiliary tooling according to claim 6, characterized in that: The upper and lower mold coating mechanism (7) comprises a second frame (71), a second guide block (72) and a coating groove (73); one end of the second frame (71) is connected to one end of the first frame (61) and can be located between the upper mold and the lower mold; the second guide block (72) is arranged on the second frame (71) in a liftable manner; the top and bottom ends of the second guide block (72) are provided with the coating groove (73) adapted to the size of the upper mold and the lower mold; the coating groove (73) is brush-shaped all around and on the bottom; the inner surface of the coating groove (73) is connected to the release agent through a pipeline; the lifting of the second guide block (72) can make the upper mold and the lower mold pass through the coating groove (73) in sequence.

8. The polyimide hot compression molding automated auxiliary tooling according to claim 7, characterized in that: The U-shaped mold cleaning mechanism (8) comprises a third frame (81), a third guide block (82), a mounting guide block (83) and a mold cleaning head (84); one end of the third frame (81) is connected to the other end of the second frame (71) and can be located above the U-shaped mold; the third guide block (82) can be raised and lowered on the third frame (81); the mounting guide block (83) can be horizontally and longitudinally slidably arranged on the third guide block (82); the film cleaning head (84) can be rotatably arranged at the bottom end of the mounting guide block (83) and can be rotated by a motor; the third guide block (82) descends to enable the film cleaning head (84) to pass through the cavity.

9. The polyimide hot compression molding automated auxiliary tooling according to claim 8, characterized in that: The U-shaped mold coating mechanism (9) comprises a fourth frame (91), a fourth guide block (92), a coating brush (93) and a scraper plate (94); one end of the fourth frame (91) is connected to the other end of the third frame (81) and can be located above the U-shaped mold; the fourth guide block (92) is arranged on the fourth frame (91) in a liftable manner; the bottom end of the fourth guide block (92) is provided with the coating brush (93) adapted to the size of the cavity; the interior of the coating brush (93) is connected to the release agent through a pipeline; the fourth guide block (92) descends to allow the coating brush (93) to pass through the cavity; the bottom of the other end of the fourth frame (91) is provided with the scraper plate (94) capable of abutting against the top surface of the U-shaped mold.

10. The polyimide hot compression molding automated auxiliary tooling according to claim 8, characterized in that: The feeding mechanism (10) comprises a raw material hopper (101) and a receiving hopper (103); the raw material hopper (101) is arranged on the frame (1); the receiving hopper (103) is arranged on the frame (1) in an inclined and sliding manner, and a discharge pipe (104) is arranged at the lower end; when the receiving hopper (103) slides to the upper end, the receiving hopper (103) can be located below the discharge port (105) of the raw material hopper (101); when the receiving hopper (103) slides to the lower end, the discharge end of the discharge pipe (104) can be located above the cavity.

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