A distributed PCM molding process and molding system for prepreg sheets

Abstract

This invention discloses a distributed PCM molding process for prepreg sheets, comprising the following steps: preheating a release cloth in a heating channel while maintaining it under tension and continuously moving; conveying the prepreg sheet to the heating channel during preheating and bonding it to the release cloth; traction of the release cloth, with the prepreg sheet initially bonded to the release cloth gradually passing through a pre-pressing module under traction, where pressure is applied for initial molding to obtain a PCM preform; feeding the PCM preform into a hot press mold for secondary molding, followed by demolding to obtain a molded part; and removing the release cloth from the molded part to obtain the finished product. A molding system is also included. This invention achieves the compensation of the prepreg sheet deformation points by the release cloth during the initial molding process, reducing the deformation of the release cloth during subsequent molding and improving the uniformity of the workpiece surface sanding effect.

Description

Technical Field

[0001] This invention relates to the field of molding technology, specifically to a distributed PCM molding process and molding system for prepreg sheets. Background Technology

[0002] In general molding processes, release agents are applied to the mold in advance to facilitate demolding of the workpiece. However, in actual production, both the composite material raw materials and the release agent can make the product difficult to bond with glue, resulting in a decrease in the adhesion between the composite material base plate and the steel frame. At the same time, the workpiece using the release agent will have a smooth surface, which will affect its subsequent adhesion to the coating.

[0003] To reduce the use of release agents, a release cloth has been developed that can be directly wrapped around the preform, molded, and then removed. This method of using a release cloth is mentioned in a patent (CN202123167189.8) for a release cloth pretreatment and overlapping device. The advantages of this release cloth are that it can be integrally molded with the workpiece during the molding process, and after removal, it gives the workpiece a frosted texture, thus solving some of the problems associated with spraying.

[0004] However, in actual production, the cutting and pasting of the release fabric becomes an important issue in the molding process. If gaps or warping occur between the release fabric and the prepreg during laying, it will greatly affect the molding effect, causing significant differences in the flatness of the workpiece surface. At the same time, the release fabric will undergo significant deformation during the molding process, resulting in a decrease in the density of rough particles on the workpiece surface, which will also cause differences in the flatness of the workpiece and affect its adhesion to the coating. Summary of the Invention

[0005] The purpose of this invention is to provide a distributed PCM molding process and molding system for prepreg sheets, so as to solve the technical problem of large differences in the surface flatness of workpieces during the molding process in the prior art.

[0006] To solve the above-mentioned technical problems, the present invention specifically provides the following technical solution:

[0007] This invention provides a distributed PCM molding process for prepreg sheets, comprising the following steps:

[0008] The release fabric is preheated in the heating channel and kept under tension while being moved continuously.

[0009] In the preheated state, the prepreg material plate is conveyed to the heating channel and bonded and fixed with the release cloth;

[0010] Pulling the release cloth, the pre-impregnated material sheet preliminarily adhered to the release cloth is gradually pulled through a pre-pressing module, the pre-pressing module applies pressure to perform primary molding to obtain a PCM preform;

[0011] The PCM preform is sent into a hot-pressing mold to perform secondary molding, releasing the mold to obtain a molded part.

[0012] The release cloth on the molded part is removed to obtain a finished product.

[0013] As a preferred scheme of the present application, in the primary molding step, further comprising:

[0014] The release cloth is driven to move up and down through the pre-pressing module, and the pre-impregnated material sheet is bent and deformed, and the release cloth is supplemented in the bending process.

[0015] As a preferred scheme of the present application, the pre-impregnated material sheet is arranged between the upper and lower release cloths.

[0016] The present application further provides a distributed PCM molding system for a pre-impregnated material sheet, comprising a pulling device, one end of the release cloth is arranged on the pulling device and can continuously pull the release cloth by rotating, and the release cloth moves up and down when the connection position of the pulling device and the release cloth changes;

[0017] A roller is arranged on the side of the pulling device, and the other end of the release cloth is arranged on the roller, and the roller has a reverse contraction tendency when the release cloth is discharged;

[0018] A pre-pressing module is arranged between the roller and the pulling device, a heating channel is arranged transversely in the pre-pressing module, the release cloth passes through the heating channel and is in a continuous preheating state in the heating channel;

[0019] A support table is arranged at an upstream position of the pre-pressing module, the support table is used to support the pre-impregnated material sheet in the vertical direction and drive the pre-impregnated material sheet to enter the heating channel in the horizontal direction;

[0020] A hot-pressing mold is arranged between the pre-pressing module and the pulling device;

[0021] The pre-impregnated material sheet and the release cloth are connected together in the heating channel, and the pre-impregnated material sheet and the release cloth are continuously adhered together in the heating channel under the pulling of the pulling device, and are preliminarily molded under the action of the pulling force in the adhering process.

[0022] When the prepreg plate is completely pulled out, the traction device returns to the initial position, and the hot-pressing mold is subjected to secondary forming to obtain a formed part.

[0023] As a preferred scheme of the present application, the traction device comprises a rail support vertically arranged at the side of the pre-pressing mold and a traction cylinder rotatably arranged on the rail support through an integrated driving device, a gap is arranged on the outer wall of the traction cylinder, and the release cloth is arranged on the gap.

[0024] The integrated driving device can drive the traction cylinder to slide on the rail support, and the sliding direction of the traction cylinder is perpendicular to the sliding direction of the prepreg plate.

[0025] As a preferred scheme of the present application, the integrated driving device comprises a sliding block rotatably arranged on the rail support through a sliding group mold, and the sliding group mold drives the sliding block to slide on the rail support.

[0026] A connecting rod is fixedly arranged on the sliding block, the end of the connecting rod is rotatably connected with the traction cylinder through a rotating motor, the rotating motor drives the traction cylinder to rotate on the sliding block, and the traction cylinder continuously accommodates the release cloth in the rotating process.

[0027] As a preferred scheme of the present application, the release cloth is arranged on the upper and lower sides of the prepreg plate.

[0028] Two rollers are arranged on the upper and lower sides of the support table, and the two release cloths can be simultaneously discharged on the two rollers and simultaneously covered on the prepreg plate in the primary forming of the pre-pressing mold.

[0029] The sliding block is provided with two sliding blocks, the two sliding blocks are synchronously operated in the primary forming, the two sliding blocks are away from each other when the release cloth is removed from the formed part, and the rotating motor is continuously rotated.

[0030] As a preferred scheme of the present application, the pre-pressing mold comprises two support frames arranged on the workbench, the two support frames are arranged on the left and right sides of the support table, a cross bar is arranged on the support frame, and the two cross bars are connected with the two support frames.

[0031] A heating cylinder capable of being heated is rotatably arranged on the cross bar close to the support table, a forming cylinder is rotatably arranged on the cross bar away from the support table, an extrusion belt is wrapped on the heating cylinder and the forming cylinder, and a heating channel is arranged between the two extrusion belts.

[0032] As a preferred scheme of the present application, an elastic sheet is arranged between the forming cylinder and the support frame body, and when the forming cylinder is pressed, the forming cylinder moves towards the heating cylinder.

[0033] As a preferred scheme of the present application, the roller is connected with a frame body through a mosquito coil spring, the frame body is vertically arranged on a workbench, and a gap for fixing the release cloth is arranged on the outer wall of the roller.

[0034] Compared with the prior art, the present application has the following beneficial effects:

[0035] 1. The present application preheats the position requiring lamination, completes positioning and lamination of the release cloth and the prepreg panel, and continuously moves the position of the tensioned release cloth, thereby continuously increasing the lamination area during traction of the release cloth, without cutting the release cloth, and only needing to control synchronous movement of the release cloth and the prepreg panel to realize lamination, thereby reducing the probability of air bubble occurrence.

[0036] 2. The present application adopts a distributed forming process, completes compensation of the release cloth to the deformation position of the prepreg panel in the preliminary forming process, reduces the tension of the release cloth in the subsequent mold pressing process, reduces the deformation amount of the prepreg panel in the forming process, and improves the uniformity of the surface frosted effect of the workpiece.

[0037] 3. Through secondary forming, the degree of deformation and tearing of the workpiece due to uneven pressure in the press, different sizes and heights of the mold cavity, and sharp changes in temperature during mold pressing is reduced, and the surface roughness of the workpiece is further improved.

[0038] 4. The mold pressing system of the present application is easy to operate, does not need to transfer the material, can realize recycling of the release cloth, and solves the waste problem caused by not cutting the release cloth. BRIEF DESCRIPTION OF DRAWINGS

[0039] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only exemplary, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of the provided drawings.

[0040] Figure 1 A distributed PCM mold pressing process flow diagram for providing a prepreg panel of the present application is provided.

[0041] Figure 2 A structure diagram of a distributed PCM mold pressing system for providing a prepreg panel of the present application is provided.

[0042] Figure 3 Provided for the present invention Figure 2 A schematic diagram of the traction device in the embodiment;

[0043] Figure 4 Provided for the present invention Figure 2 A schematic diagram of the pre-compression module in the embodiment;

[0044] Figure 5 Provided for the present invention Figure 2 A side view of the pre-compression module in the embodiment;

[0045] Figure 6 Provided for the present invention Figure 2 A schematic diagram of the roller structure in the embodiment.

[0046] The labels in the diagram represent the following:

[0047] 1-Traction device; 2-Roller; 3-Pre-compression module; 4-Support platform; 5-Hot press mold; 6-Elastic sheet; 7-Mosquito coil spring; 8-Frame; 9-Demolding cloth; 10-Prepreg material plate;

[0048] 101-Rail support; 102-Integrated drive unit; 103-Traction cylinder; 104-Gap;

[0049] 1021-Slider; 1022-Sliding module; 1023-Connecting rod; 1024-Rotating motor;

[0050] 301-Support frame; 302-Crossbar; 303-Forming cylinder; 304-Extrusion belt; 305-Heating cylinder. Detailed Implementation

[0051] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0052] like Figure 1 As shown, the present invention provides a distributed PCM molding process for prepreg sheets, comprising the following steps:

[0053] 1. The release cloth is preheated in the heating channel of the pre-compression module. The release cloth is pulled by two rollers set at both ends to keep it in a taut state. The release cloth is long enough and stored on the rollers. When the traction force at one end is greater than the traction force at the other end, the release cloth moves continuously.

[0054] 2. Under the preheating state, the prepreg plate is moved under the action of an external force in the horizontal direction. The prepreg plate is moved to the heating channel of the pre-pressing module and the bottom of the release cloth. As the prepreg plate enters, the end of the prepreg plate is bonded and fixed to the release cloth. At this time, the external force on the prepreg plate in the horizontal direction stops.

[0055] 3. By actively rotating the rollers located downstream of the prepreg plate, the release fabric is pulled. Under the traction force, the prepreg plate, which is initially bonded to the release fabric, gradually passes through the pre-pressing module. During the passage, its bonding area continuously increases, and the initial forming is carried out to obtain the PCM preform.

[0056] 4. As the PCM preform is formed, it moves continuously to the hot press mold under the action of the release cloth. After the PCM preform is fed into the hot press mold, it undergoes secondary forming and demolding to obtain the molded part.

[0057] 5. As the molded part gradually cools, remove the release cloth from the molded part to obtain the finished product.

[0058] This invention tensions the release fabric and preheats the area to be bonded, then actively bonds the prepreg sheet located downstream to the preheated position of the release fabric, thus completing the positioning and bonding of the release fabric and the prepreg sheet. The bonding area is continuously increased during the traction of the release fabric. There is no need to cut the release fabric; bonding can be achieved simply by controlling the synchronous movement of the release fabric and the prepreg sheet, improving production efficiency and reducing the probability of air bubbles.

[0059] Furthermore, the invention employs a distributed molding process, which first achieves conformal molding between the prepreg sheet and the release cloth, reducing the tension generated by the release cloth during subsequent molding, thus reducing the difficulty and time of molding, and increasing the allowance of the release cloth. This also reduces the deformation of the release cloth at locations where the prepreg sheet has significant deformation during molding, which is of great help in manufacturing workpieces with frosted surfaces.

[0060] To further demonstrate that the present invention reduces the deformation of the release fabric during the molding process, the initial molding step also includes the following steps:

[0061] The release cloth passing through the pre-compression module moves up and down, causing the prepreg sheet to bend and deform. During the bending process, the release cloth wraps around the prepreg sheet.

[0062] In one direction, if the mold used in the molding process is more complex, it will cause a significant increase in the deformation of the release cloth. As the release cloth deforms, its particle density changes accordingly, resulting in a decrease in the abrasive density at the deformation location of the prepreg sheet. Compared to other locations, this area is more prone to paint peeling.

[0063] However, during the initial molding process, the release fabric is pulled to complete the necessary bending of the prepreg sheet. Since the latter half of the release fabric is not yet connected to the prepreg sheet, it follows the shape without deforming during bending. After the PCM preform is produced, the thickness of the release fabric on the PCM preform is basically uniform, and it has a similar shape to the molded part. After bonding, the PCM preform is placed in a hot press mold for precise secondary molding.

[0064] Since the bonding of the release fabric and the initial molding are done in one step, it does not affect production efficiency.

[0065] To prevent the prepreg sheet from detaching from the release fabric during traction, the prepreg sheet is positioned between two release fabrics. The release fabrics move synchronously during traction, facilitating the traction of the prepreg sheet.

[0066] To improve the frosting effect on the surface of the finished workpiece, the release cloth during the traction process is made of polyester filament and spun needle-punched weaving.

[0067] When constructing according to the above process, it is difficult to place the PCM preform with the release cloth on the edge into the hot press mold for molding. Therefore, the present invention also provides a distributed PCM molding system for prepreg material plates, which improves the entire molding process.

[0068] like Figures 2-6 As shown, the present invention provides a distributed PCM molding system for prepreg sheets, including a traction device 1, a roller 2 disposed on the side of the traction device 1, a pre-compression module 3 disposed between the roller 2 and the traction device 1, a support platform 4 disposed upstream of the pre-compression module 3, and a hot press mold 5 disposed between the pre-compression module 3 and the traction device 1. A release cloth 9 is disposed on the device, and a prepreg sheet 10 is disposed on the device.

[0069] One end of the release cloth is set on the traction device 1 and can be continuously pulled by rotation. When the connection position between the traction device 1 and the release cloth changes, the release cloth moves up and down.

[0070] The other end of the release cloth is placed on the roller 2, and the roller 2 has a reverse shrinkage tendency when the release cloth is discharged.

[0071] The pre-compression module 3 has a horizontally arranged heating channel. The demolding cloth passes through the heating channel and is in a continuous preheating state within the heating channel.

[0072] As can be seen from the above, the two ends of the release cloth are set between the traction device 1 and the roller 2, and the middle section is set on the pre-compression module 3. That is, during production, the release cloth is divided into five states by these three devices.

[0073] The release cloth on roller 2 is in a stored state, ready for use; the release cloth between roller 2 and the heating channel of pre-compression module 3 is in a state ready for bonding; the release cloth in the heating channel of pre-compression module 3 is in a state of use, and the bonding state is also a heating state; the release cloth between the heating channel of pre-compression module 3 and traction device 1 has been used and is in a conformal state; the release cloth on traction device 1 has been torn off and stored again, ready for processing.

[0074] The traction device 1 can not only pull the release fabric, but also shape and store it. Since the release fabric has a small degree of deformation, the release fabric to be processed can be reused.

[0075] Meanwhile, the initial movement of the prepreg sheet is mainly related to the support platform 4 located upstream of the pre-pressing module 3. The support platform 4 is used to support the prepreg sheet vertically and drive it horizontally into the heating channel. Once the prepreg sheet enters the heating channel, the support platform 4 stops moving until production is complete. After production is complete, the support platform 4 moves the prepreg sheet for the next production run to the pre-pressing module 3.

[0076] In this process, the prepreg sheet and the release cloth are connected together in the heating channel, and the prepreg sheet and the release cloth are continuously bonded together in the heating channel under the traction of the traction device 1, and are subjected to traction force to perform preliminary shaping during the bonding process.

[0077] After the prepreg sheet is completely passed through, it becomes a PCM preform. The traction device 1 returns to the initial position. At this time, the PCM preform is in the position of the hot press mold 5. The hot press mold 5 presses the PCM preform from top to bottom for secondary molding to obtain the molded part.

[0078] This system can systematically mold prepreg sheets in a fully automated manner without the need for material transfer, making it easy to operate. It also enables the recycling of release cloth, solving the waste problem caused by not cutting the release cloth.

[0079] The traction device 1 has multiple functions. Specifically, the traction device 1 includes a track support 101 vertically arranged on the side of the pre-compression module 3 and a traction cylinder 103 rotatably mounted on the track support 101 via an integrated drive device 102. A slot 104 is provided on the outer wall of the traction cylinder 103, and the release cloth is installed on the slot 104.

[0080] The integrated drive device 102 can drive the traction cylinder 103 to slide on the track support 101, and the sliding direction of the traction cylinder 103 is perpendicular to the sliding direction of the prepreg plate.

[0081] The integrated drive device 102 includes a slider 1021 mounted on the track support 101 via a sliding module 1022, which drives the slider 1021 to slide on the track support 101.

[0082] A connecting rod 1023 is fixedly installed on the slider 1021. The end of the connecting rod 1023 is rotatably connected to the traction cylinder 103 through a rotating motor 1024. The rotating motor 1024 drives the traction cylinder 103 to rotate on the slider 1021. During the rotation, the traction cylinder 103 continuously collects the demolding cloth.

[0083] During the initial molding process, the rotating motor 1024 stops working when the sliding mold 1022 is in operation.

[0084] As the position of the slider 1021 changes, the traction cylinder 103 can change the direction of the traction force on the release cloth, thereby achieving the folding of the prepreg sheet. During the folding process, the traction cylinder 103 is in a rotating state. When the prepreg sheet deforms, the release cloth fills in the deformed position to achieve excess wrapping.

[0085] To prevent the release fabric from detaching from the prepreg plate during traction, the release fabric is placed on the upper and lower sides of the prepreg plate;

[0086] There are two rollers 2, which are respectively set on the upper and lower sides of the support platform 4. The two release cloths can be discharged on the two rollers 2 at the same time and covered on the prepreg material plate at the same time under the initial forming of the prepress module 3.

[0087] There are two sliders 1021. During the initial molding, the two sliders move synchronously. When the release cloth is removed from the molded part, the two sliders move away from each other and the motor 1024 rotates continuously.

[0088] In this embodiment, the pre-compression module 3 includes two support frames 301 mounted on the workbench. The two frames are respectively located on the left and right sides of the support platform 4. A crossbar 302 is provided on the support frame 301, and the two crossbars 302 connect the two support frames 301 together.

[0089] A heating cylinder 305 capable of heating is provided on the crossbar 302 near the support platform 4, and a forming cylinder 303 is provided on the crossbar 302 away from the support platform 4. An extrusion belt 304 is wrapped around the heating cylinder 305 and the forming cylinder 303, and the heating channel is located between the upper and lower extrusion belts 304.

[0090] Preferably, an elastic sheet 6 is provided between the forming cylinder 303 and the support frame 301. When the forming cylinder 303 is compressed, the forming cylinder 303 moves toward the heating cylinder 305.

[0091] In this embodiment, the roller 2 is connected to the frame 8 via the mosquito coil spring 7. The frame 8 is vertically set on the worktable, and the outer wall of the roller 2 is provided with a gap for fixing the release cloth.

[0092] The distributed PCM molding process and molding system of the prepreg sheet in this embodiment can complete the filling of the deformation area of ​​the prepreg sheet by the release cloth during the initial molding process. By reducing the deformation of the prepreg sheet during the molding process, the deformation of the release cloth during the subsequent molding process is reduced, thereby improving the uniformity of the surface sanding effect of the workpiece.

[0093] The above embodiments are merely exemplary embodiments of this application and are not intended to limit this application. The scope of protection of this application is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to this application within its substance and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of this application.

Claims

1. A distributed PCM molding system for prepreg, The distributed PCM molding process for prepreg comprises the following steps: The release cloth is preheated in the heating channel, and the release cloth is continuously moved in a tensioned state; In the preheated state, the prepreg is transported to the heating channel and is adhered to the release cloth, and the prepreg is arranged between the upper and lower release cloths; The release cloth is pulled, and the prepreg preliminarily adhered to the release cloth is gradually passed through the pre-pressing module under the pulling force, the pre-pressing module applies pressure to perform primary molding to obtain a PCM preform; In the primary molding step, the release cloth passing through the pre-pressing module is moved up and down, the prepreg is bent and deformed, and the release cloth is compensated in the bending process; The PCM preform is sent into the hot-pressing mold for secondary molding, demolding, and a molded part is obtained; The release cloth on the molded part is removed to obtain a finished product; The system comprises: A pulling device (1), one end of the release cloth is arranged on the pulling device (1) and can continuously pull the release cloth by rotating, and the release cloth moves up and down when the connection position of the pulling device (1) and the release cloth changes; A roller (2) is arranged on the side of the pulling device (1), the other end of the release cloth is arranged on the roller (2), and the roller (2) has a reverse contraction tendency when the release cloth is discharged; A pre-pressing module (3) is arranged between the roller (2) and the pulling device (1), a heating channel is transversely arranged in the pre-pressing module (3), the release cloth passes through the heating channel and is continuously preheated in the heating channel; A support table (4) is arranged at an upstream position of the pre-pressing module (3), and the support table (4) is used to support the prepreg in the vertical direction and drive the prepreg to enter the heating channel in the horizontal direction; A hot-pressing mold (5) is arranged between the pre-pressing module (3) and the pulling device (1); The prepreg and the release cloth are connected in the heating channel, and the prepreg and the release cloth are continuously adhered together in the heating channel under the pulling of the pulling device (1) and are preliminarily molded under the action of the pulling force in the adhering process; When the prepreg is completely passed out, the pulling device (1) returns to the initial position, and the hot-pressing mold (5) performs secondary molding to obtain a molded part. 2.The distributed PCM molding system for prepreg according to claim 1, wherein The pulling device (1) comprises a track support (101) vertically arranged on the side of the pre-pressing module (3) and a pulling cylinder (103) rotatably installed on the track support (101) by an integrated driving device (102), a gap (104) is arranged on the outer wall of the pulling cylinder (103), and the release cloth is arranged in the gap (104). The integrated driving device (102) can drive the traction cylinder (103) to slide on the track support (101), and the sliding direction of the traction cylinder (103) is perpendicular to the sliding direction of the prepreg panel.

3. The distributed PCM molding system for the prepreg panel according to claim 2, characterized in that, The integrated driving device (102) comprises a sliding block (1021) installed on the track support (101) through a sliding group mold (1022), and the sliding group mold (1022) drives the sliding block (1021) to slide on the track support (101); A connecting rod (1023) is fixedly arranged on the sliding block (1021), and the end of the connecting rod (1023) is rotatably connected with the traction cylinder (103) through a rotating motor (1024), the rotating motor (1024) drives the traction cylinder (103) to rotate on the sliding block (1021), and the traction cylinder (103) continuously accommodates the release cloth during the rotation.

4. The distributed PCM molding system for the prepreg panel according to claim 3, characterized in that, The release cloth is arranged on the upper and lower sides of the prepreg panel; Two rolling rollers (2) are arranged on the upper and lower sides of the support table (4), and two release cloths can be simultaneously discharged on the two rolling rollers (2) and simultaneously covered on the prepreg panel after the initial forming of the pre-pressing module (3); The two sliding blocks (1021) are synchronously operated during the initial forming, and the two sliding blocks are away from each other and the rotating motor (1024) is continuously rotated when the release cloth is removed from the formed piece.

5. The distributed PCM molding system for the prepreg panel according to claim 1, characterized in that, The pre-pressing module (3) comprises two support frame bodies (301) installed on the workbench, and the two support frame bodies (301) are arranged on the left and right sides of the support table (4), the support frame body (301) is provided with a cross rod (302), and the two cross rods (302) are connected together. A heating cylinder (305) capable of being heated is rotatably arranged on the cross rod (302) close to the support table (4), a forming cylinder (303) is rotatably arranged on the cross rod (302) away from the support table (4), the heating cylinder (305) and the forming cylinder (303) are wrapped with an extrusion belt (304), and the heating channel is arranged between the two extrusion belts (304).

6. The distributed PCM molding system for the prepreg panel according to claim 5, characterized in that, An elastic sheet (6) is arranged between the forming cylinder (303) and the support frame body (301), and when the forming cylinder (303) is extruded, the forming cylinder (303) moves towards the heating cylinder (305).

7. The distributed PCM molding system for prepreg panels of claim 2, wherein, The rolling roller (2) is connected with a frame (8) through a mosquito coil spring (7), the frame (8) is vertically arranged on the workbench, and the outer wall of the rolling roller (2) is provided with a gap for fixing the release cloth.

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