Hot pressing device for producing epoxy resin plate by recycling waste epoxy resin powder

Abstract

The invention relates to the technical field of epoxy resin, and discloses a hot pressing device for epoxy resin plate production by recycling waste epoxy resin powder, the hot pressing device comprises a base, the upper surface of the base is fixedly connected with a supporting plate, the top end of the supporting plate is fixedly connected with a forging press, and the free end of the bottom of the forging press is fixedly connected with a pressing die; according to the invention, the pressing die is heated to soften resin powder, the viscosity of the resin powder is obviously increased, the plastic deformation of the powder is promoted, the resin powder is cured and formed after being heated for a period of time, the bottom plate is locked on the base by the clamping shaft through the sliding seat and the connecting seat, the stability during hot pressing is improved, and on the contrary, the connecting frame is pulled downwards, so that the resin powder is pressed. The connecting frame drives the locking rod to be pulled away from the clamping shaft, then the bottom plate is unlocked, the device can be conveniently mounted and dismounted, and follow-up cleaning, repairing and replacing are facilitated, the protruding end of the cam ejects the connecting frame downwards, and then the connecting frame and the locking rod move downwards to unlock the bottom plate.

Description

Technical Field

[0001] This invention relates to the field of epoxy resin technology, specifically to a hot pressing device for producing epoxy resin boards using recycled waste epoxy resin powder. Background Technology

[0002] Waste epoxy resin powder generated in the production of epoxy resin boards is traditionally disposed of by landfill or incineration, which leads to resource waste and environmental pollution. In order to recycle and reuse it, it needs to be reshaped through hot pressing. However, existing hot pressing equipment is often not optimized for the characteristics of such recycled powder, resulting in bottlenecks such as low molding efficiency and uneven board performance.

[0003] Patent CN214522578U discloses a hot pressing device for epoxy resin board production. The patent describes a workbench with supporting legs at the bottom, a lower heat spreader plate at the upper inner end of the workbench, and a lower heating mechanism at the bottom of the lower heat spreader plate. The workbench is connected to both ends of a mounting frame. A press is mounted at the upper middle end of the mounting frame, with a pressing plate connected to the lower end of the press's rod. Guide rods are mounted on both upper ends of the pressing plate, and these guide rods are movably connected to guide holes on the mounting frame. An upper heat spreader plate is mounted on the lower inner end of the pressing plate, and an upper heating mechanism is mounted on the inner side wall of the upper heat spreader plate. The mounting frame has openings on both lower sides. The device features a slotted die with a hot air mechanism installed inside, enabling rapid placement and pressing, facilitating rapid heating, high stability, and ease of use. It saves time, is highly efficient during pressing, and allows for auxiliary heating from both sides. While this patent addresses the aforementioned issues, it still suffers from difficulties in quickly changing and adjusting the mold, and the epoxy resin board remains sticky after hot pressing, making demolding difficult. Furthermore, some powder residue broken off from the edges of the epoxy resin board during demolding is difficult to recover, hindering continuous hot pressing. Therefore, a hot pressing device for epoxy resin board production that utilizes recycled waste epoxy resin powder is proposed to solve these problems. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a hot pressing device for producing epoxy resin boards by recycling waste epoxy resin powder, which addresses the shortcomings of the prior art.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is: a hot pressing device for producing epoxy resin boards by recycling waste epoxy resin powder, comprising: A base, wherein a support plate is fixedly connected to the upper surface of the base, a forging press is fixedly connected to the top of the support plate, a pressure die is fixedly connected to the bottom free end of the forging press, and a bottom plate is provided below the pressure die; A demolding device is disposed above the base and is used to demold the epoxy resin board after hot pressing. A recycling device is located below the forging press and is used to recover excess epoxy resin powder generated after demolding.

[0006] As a further technical solution, the base plate includes: A slot is formed on the upper surface of the base, and a slide is engaged on the inner surface of the slot; A connecting seat is fixedly connected to the lower surface of the base plate.

[0007] As a further technical solution, the base plate also includes: A retaining shaft is fixedly connected to the front and rear sides of the slide block; A locking rod is slidably connected to the inner surface of the base, and a connecting frame is fixedly connected to the bottom end of the locking rod; Tie rods are provided on the front and rear sides of the base plate; Elastic telescopic rod one, which is fixedly connected to the lower surface of the base plate; A cam is hinged to the front side of the base, and a lever is fixedly connected to the upper surface of the cam. The coupling is fixedly connected to the left and right sides of the mold.

[0008] As a further technical solution, the upper surfaces of the connecting seat and the slide are fixedly connected, the mating surface of the locking shaft abuts against the bottom surface of the inner wall of the locking groove, the bottom end of the elastic telescopic rod is fixedly connected to the bottom surface of the inner wall of the connecting frame, and a torsion spring is provided at the hinge of the cam and the base.

[0009] As a further technical solution, the demolding device includes: A bottom frame is fixedly connected to the lower surface of the base plate, and an outer frame is fixedly connected to the bottom outer surface of the bottom frame; The movable frame is slidably connected to the inner surface of the outer frame.

[0010] As a further technical solution, the demolding device also includes: Through groove one, the through groove one is opened on both sides of the outer frame, and the inner surface of the through groove one is slidably connected with a connecting plate; The groove is formed on both sides of the upper surface of the base, and the bottom surface of the inner wall of the groove is fixedly connected to an elastic telescopic rod. A pressure plate is fixedly connected to the end of the connecting plate away from the movable frame. Pressure rod one, which is fixedly connected to the lower surface of the connecting shaft.

[0011] As a further technical solution, the outer surfaces of the movable frame and the bottom frame are slidably connected, the bottom plate and the inner surface of the movable frame are slidably connected, the connecting plate and both sides of the movable frame are fixedly connected, the pressure plate and both sides of the outer frame are slidably connected, and the lower surface of the pressure plate abuts against the top ends of the elastic telescopic rod.

[0012] As a further technical solution, the recycling device includes: Through slot two, the through slot two is opened on the front and rear sides of the bottom frame; A rotating rod is rotatably connected to both sides of the inner wall of the bottom frame, and a wiping roller is fixedly connected to the circumferential surface of the rotating rod; The scraper is fixedly connected to both sides of the inner wall of the bottom frame.

[0013] As a further technical solution, the recycling device also includes: A baffle is fixedly connected to the inner wall of the top of the slot; A material collection trough is provided on both sides of the upper surface of the base; A fixing rod is fixedly connected to the bottom of the inner wall of the material collection trough. A torsion shaft is hinged to the circumferential surface of the fixing rod, and a receiving plate is fixedly connected to the upper surface of the torsion shaft. Pressure rod two is fixedly connected to the front and rear sides of the lower surface of the pressure plate.

[0014] As a further technical solution, the circumferential surface of the wiping roller abuts against the inner wall of the movable frame, the circumferential surface of the wiping roller abuts against the top of the scraper, a torsion spring is provided at the hinge of the torsion shaft and the fixed rod, the receiving plate abuts against the bottom inner wall of the collecting trough, and the bottom end of the second pressure rod abuts against the upper surface of the base.

[0015] The present invention, by adopting the above technical solution, can bring the following beneficial effects: 1. This hot pressing device for producing epoxy resin boards using recycled waste epoxy resin powder softens the resin powder through the heating of the mold, significantly increasing its viscosity and promoting plastic deformation. After a period of heating, the powder solidifies and forms a mold. The locking shaft locks the base plate onto the base via the slide and connecting seat, improving stability during hot pressing. Conversely, pulling the connecting frame downward causes it to pull the locking rod away from the locking shaft, thus unlocking the base plate. This facilitates the installation, disassembly, cleaning, repair, and replacement of the device. The protruding end of the cam pushes the connecting frame downward, causing the connecting frame and locking rod to move downward and unlock the base plate, improving the ease of operation of the device.

[0016] 2. The hot pressing device for producing epoxy resin boards using recycled waste epoxy resin powder has a movable frame that slides downward between the bottom frame and the outer frame, thereby quickly separating the epoxy resin board from the movable frame. This prevents the epoxy resin board from sticking to the mold and eliminates the need for contact demolding, which can cause the epoxy resin board to crack, thus improving the material forming qualification rate.

[0017] 3. The hot pressing device for producing epoxy resin boards using recycled waste epoxy resin powder has a connecting plate that drives the movable frame to move downwards and retract between the bottom frame and the outer frame, thereby automatically demolding the epoxy resin board without manual operation, which improves the ease of operation of the device. The pressure plate drives the movable frame to rise and reset through the connecting plate, which facilitates continuous hot pressing of multiple sets of epoxy resin powder, thereby improving the working efficiency of the device.

[0018] 4. The hot pressing device for producing epoxy resin boards using recycled waste epoxy resin powder removes epoxy resin powder adhering to the inner wall of the movable frame during the hot pressing process. This process collects excess powder and prevents it from adhering to the movable frame and base plate for extended periods, which would otherwise be difficult to remove. The scraper removes powder from the gaps between the scraper rollers, causing the powder to fall downwards and be blocked by the baffle before falling into the collection trough. This facilitates the rapid collection of epoxy resin powder and prevents it from getting stuck in the scraper rollers. This enhances the effectiveness of the scraper rollers in continuously removing powder from the inner wall of the movable frame and further prevents powder from adhering to the inner wall of the mold.

[0019] 5. The hot pressing device for producing epoxy resin boards using recycled waste epoxy resin powder has a receiving plate that rotates along the axis of the fixed rod via a torsion shaft after being pressed. At this time, the powder slides down and is discharged from the device due to the influence of the inclined surface of the receiving plate, which improves the convenience of powder recycling. When the second pressure rod rises and moves away from the receiving plate, the receiving plate rotates and resets due to the influence of the torsion spring at the hinge of the torsion shaft and the fixed rod. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall three-dimensional structure of the present invention; Figure 2 This is a three-dimensional half-section diagram of the front side of the base of the present invention; Figure 3 For the present invention Figure 2 A magnified structural diagram of A in the middle; Figure 4 For the present invention Figure 2 A magnified structural diagram of B in the diagram; Figure 5 This is a three-dimensional half-section diagram of the front side of the demolding device of the present invention; Figure 6 For the present invention Figure 5 A magnified structural diagram of C; Figure 7 This is a three-dimensional half-sectional view of the front side of the recycling device of the present invention; Figure 8 For the present invention Figure 7 A magnified structural diagram of D in the diagram; Figure 9 For the present invention Figure 7 A magnified structural diagram of E in the middle.

[0021] In the diagram: 1. Base; 2. Support plate; 3. Forging press; 4. Die; 5. Base plate; 6. Demolding device; 7. Recycling device; 8. Slot; 9. Connecting seat; 10. Slide; 11. Shaft; 12. Locking rod; 13. Pull rod; 14. Connecting frame; 15. Elastic telescopic rod one; 16. Cam; 17. Pulley; 18. Connecting shaft; 61. Base frame; 62. Outer frame; 63. Movable frame; 64. Through slot one; 65. Groove; 66. Connecting plate; 67. Pressure plate; 68. Elastic telescopic rod two; 69. Pressure rod one; 71. Through slot two; 72. Rotating rod; 73. Wiping roller; 74. Scraper; 75. Baffle; 76. Collection trough; 77. Fixed rod; 78. Torsion shaft; 79. Receiving plate; 710. Pressure rod two. Detailed Implementation

[0022] 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.

[0023] Please see Figures 1-9One embodiment of the present invention is: a hot pressing device for producing epoxy resin boards using recycled waste epoxy resin powder, comprising a base 1, a support plate 2 fixedly connected to the upper surface of the base 1, a forging press 3 fixedly connected to the top of the support plate 2, a pressure mold 4 fixedly connected to the bottom free end of the forging press 3, a bottom plate 5 disposed below the pressure mold 4, a demolding device 6 disposed above the base 1, the demolding device 6 being used to demold the epoxy resin board after hot pressing, and a recycling device 7 disposed below the forging press 3. 7 is used to recover excess epoxy resin powder generated after demolding. The heating of the mold 4 softens the resin powder, significantly increasing its viscosity and promoting plastic deformation. After a period of heating, it is cured and formed. The retaining shaft 11 locks the base plate 5 onto the base 1 through the slide 10 and the connecting seat 9, improving the stability during hot pressing. The base plate 5 includes a retaining groove 8, which is formed on the upper surface of the base 1. The slide 10 is engaged on the inner surface of the retaining groove 8. The connecting seat 9 is fixedly connected to the lower surface of the base plate 5. The base plate 5 also includes the retaining shaft 1. 1. The locking shaft 11 is fixedly connected to the front and rear sides of the slide 10. The locking rod 12 is slidably connected to the inner surface of the base 1. The bottom end of the locking rod 12 is fixedly connected to the connecting frame 14. The pull rod 13 is set on the front and rear sides of the base plate 5. The elastic telescopic rod 15 is fixedly connected to the lower surface of the base plate 5. The cam 16 is hinged to the front side of the base 1. The upper surface of the cam 16 is fixedly connected to the lever plate 17. The connecting shaft 18 is fixedly connected to the left and right sides of the pressure mold 4. The connecting seat 9 and the upper surface of the slide 10 are fixedly connected. The mating surface and the slot of the locking shaft 11 are... The bottom surface of the inner wall of the 8-section abuts against the bottom of the elastic telescopic rod 15, which is fixedly connected to the bottom surface of the inner wall of the connecting frame 14. A torsion spring is provided at the hinge of the cam 16 and the base 1. Pulling the connecting frame 14 downward causes the locking rod 12 to be pulled away from the locking shaft 11, thereby unlocking the base plate 5. This facilitates the installation and disassembly of the device, as well as subsequent cleaning, repair and replacement. The protruding end of the cam 16 pushes the connecting frame 14 downward, thereby causing the connecting frame 14 and the locking rod 12 to move downward and unlock the base plate 5, improving the ease of operation of the device.

[0024] Working principle: Waste epoxy resin powder is poured onto the base plate 5. The forging press 3 is started, and the forging press 3 drives the die 4 to descend. The die 4 compacts the epoxy resin powder on the base plate 5. The epoxy resin powder spreads outwards when it is pressed, and its periphery is restricted by the movable frame 63, thus being pressed into a square plate. At this time, the electric heating system built into the die 4 is activated. The heat from the die 4 softens the resin powder, significantly increasing its viscosity and promoting the plastic deformation of the powder. After a period of heating, it is cured and formed. The base plate 5 is inserted into the slot 8 through the connecting seat 9 and the slide 10. The slide 10 is pushed to the center of the slot 8. At this time, the elastic return action of the elastic telescopic rod 15 pulls the base frame 61 upward. The connecting frame 14 drives the locking rod 12 to rise and insert it into the slot 8 and the locking shaft 11, locking the locking shaft 11 and the base 1. The locking shaft 11 then passes through the slide 10. The connecting seat 9 locks the base plate 5 onto the base 1, improving stability during hot pressing. Conversely, pulling down the connecting frame 14 causes the locking rod 12 to disengage from the locking shaft 11, thereby unlocking the base plate 5. This facilitates the installation, disassembly, cleaning, repair, and replacement of the device. Pushing the lever 17 upward causes the cam 16 to rotate, moving the bottom protruding end of the cam 16 away from the base 1. At this point, the connecting frame 14 loses the resistance of the cam 16 and moves upward to reset under the influence of the elastic telescopic rod 15, causing the locking rod 12 to insert into the locking shaft 11. Conversely, pressing down the lever 17 causes the cam 16 to rotate again. At this point, the protruding end of the cam 16 pushes the connecting frame 14 downward, causing the connecting frame 14 and the locking rod 12 to move downward and unlock the base plate 5, improving the ease of operation of the device.

[0025] Please see Figures 1-9Based on the above embodiments, in another embodiment of the present invention, the demolding device 6 includes a bottom frame 61, which is fixedly connected to the lower surface of the base plate 5. An outer frame 62 is fixedly connected to the bottom outer surface of the bottom frame 61. A movable frame 63 is slidably connected to the inner surface of the outer frame 62. The movable frame 63 slides downward between the bottom frame 61 and the outer frame 62, thereby allowing the epoxy resin board to quickly separate from the movable frame 63, preventing the epoxy resin board from sticking to the mold. At the same time, it eliminates the need for contact demolding, which can cause the epoxy resin board to crack, thus improving the material forming qualification rate. The demolding device 6 also includes a through groove 64, which is opened on both sides of the outer frame 62. A connecting plate 66 is slidably connected to the inner surface of the through groove 64. A groove 65 is opened on both sides of the upper surface of the base 1. An elastic extension is fixedly connected to the bottom surface of the inner wall of the groove 65. The second telescopic rod 68 and the pressure plate 67 are fixedly connected to the end of the connecting plate 66 away from the movable frame 63. The first pressure rod 69 is fixedly connected to the lower surface of the connecting shaft 18. The movable frame 63 and the outer surface of the bottom frame 61 are slidably connected. The bottom plate 5 and the inner surface of the movable frame 63 are slidably connected. The connecting plate 66 and both sides of the movable frame 63 are fixedly connected. The pressure plate 67 and both sides of the outer frame 62 are slidably connected. The lower surface of the pressure plate 67 abuts against the top of the second elastic telescopic rod 68. The connecting plate 66 drives the movable frame 63 to move downward and retract between the bottom frame 61 and the outer frame 62, thereby automatically demolding the epoxy resin board without manual operation, improving the ease of operation of the device. The pressure plate 67 drives the movable frame 63 to rise and reset through the connecting plate 66, which facilitates continuous hot pressing of multiple sets of epoxy resin powder, thereby improving the working efficiency of the device.

[0026] Working principle: After the die 4 descends, it is inserted into the movable frame 63. After the epoxy resin board is formed, the forging press 3 is restarted. The forging press 3 drives the die 4 to rise and pull away from the movable frame 63. At this time, the movable frame 63 is pressed down, and the movable frame 63 slides downward between the bottom frame 61 and the outer frame 62, thereby quickly separating the epoxy resin board from the movable frame 63, avoiding the epoxy resin board from sticking to the mold. At the same time, it eliminates the need for contact demolding, which can cause the epoxy resin board to crack, thus improving the material forming qualification rate. When the die 4 descends, it drives the connecting shaft 18 to descend, and the connecting shaft 18 drives the pressure rod 69 to descend. When the pressure rod 69 contacts the pressure plate 67, the pressure plate 67 is affected by the pressure rod 69 and moves downward. The pressure plate 67 moves, causing the connecting plate 66 to slide downwards within the through groove 64. The connecting plate 66 then moves the movable frame 63 downwards and retracts it between the bottom frame 61 and the outer frame 62, thus automatically demolding the epoxy resin board without manual operation, improving the ease of operation of the device. As the pressure plate 67 descends, it presses down on the elastic telescopic rod 68. When the pressure rod 69 rises and moves away from the pressure plate 67, the elastic reset action of the elastic telescopic rod 68 pushes the pressure plate 67 upwards to reset. The pressure plate 67 then drives the movable frame 63 to rise and reset via the connecting plate 66, facilitating continuous hot pressing of multiple sets of epoxy resin powder, thereby improving the working efficiency of the device.

[0027] Please see Figures 1-9Based on the above embodiments, in another embodiment of the present invention, the recycling device 7 includes a second through groove 71, which is opened on the front and rear sides of the bottom frame 61. A rotating rod 72 is rotatably connected to both sides of the inner wall of the bottom frame 61. A wiping roller 73 is fixedly connected to the circumferential surface of the rotating rod 72. A scraper 74 is fixedly connected to both sides of the inner wall of the bottom frame 61. During the hot pressing process, the epoxy resin powder adhering to the inner wall of the movable frame 63 is scraped off by the wiping roller 73, thereby collecting the excess powder. At the same time, it prevents the excess powder from adhering to the movable frame 63 and the bottom plate 5 for a long time and forming scale, which is difficult to remove. The scraper 74 scrapes off the powder between the gaps of the wiping roller 73. The powder falls downward and is blocked by the baffle 75 before falling into the collection trough 76, which facilitates the rapid collection of epoxy resin powder. At the same time, it prevents the epoxy resin powder from getting stuck in the wiping roller 73, improves the effect of the wiping roller 73 in continuously wiping the powder on the inner wall of the movable frame 63, and further avoids the powder adhering to the inner wall of the mold. The recycling device 7 also includes a baffle 75. 5 is fixedly connected to the top inner wall of the slot 8. The collection trough 76 is opened on both sides of the upper surface of the base 1. The fixing rod 77 is fixedly connected to the bottom of the inner wall of the collection trough 76. The circumferential surface of the fixing rod 77 is hinged to the torsion shaft 78. The upper surface of the torsion shaft 78 is fixedly connected to the receiving plate 79. The pressure rod 710 is fixedly connected to the front and rear sides of the lower surface of the pressure plate 67. The circumferential surface of the wiping roller 73 abuts against the inner wall of the movable frame 63. The circumferential surface of the wiping roller 73 abuts against the top of the scraper 74. The torsion shaft 78 and the fixing rod 79 are fixedly connected to the inner wall of the slot 8. A torsion spring is provided at the hinge of rod 77. The receiving plate 79 and the bottom inner wall of the collecting trough 76 abut against each other. The bottom end of the pressure rod 710 abuts against the upper surface of the base 1. After the receiving plate 79 is pressed, it rotates along the axis of the fixed rod 77 through the torsion shaft 78. At this time, the powder slides down and is discharged from the device due to the influence of the inclined surface of the receiving plate 79, which improves the convenience of powder recycling. When the pressure rod 710 rises and moves away from the receiving plate 79, the receiving plate 79 rotates and resets due to the influence of the torsion spring at the hinge of the torsion shaft 78 and the fixed rod 77.

[0028] Working principle: During the descent of the movable frame 63, its inner wall contacts the wiping roller 73 through the through groove 71, generating friction. At this time, the epoxy resin powder adhering to the inner wall of the movable frame 63 during the hot pressing process is scraped off by the wiping roller 73, thereby collecting the excess powder. This also prevents the excess powder from adhering to the movable frame 63 and the base plate 5 for a long time and forming scale, which would be difficult to remove. After being rubbed, the wiping roller 73 drives the rotating rod 72 to rotate slowly. When the wiping roller 73 rotates, it contacts the scraper 74. The scraper 74 scrapes off the powder between the gaps of the wiping roller 73. The powder falls downwards and is blocked by the baffle 75 before falling into the collection trough 76, which facilitates the rapid collection of epoxy resin powder. This also prevents epoxy resin powder from getting stuck in the wiping roller 73, improving the effect of the wiping roller 73 in continuously wiping the powder off the inner wall of the movable frame 63, and further avoiding powder adhesion to the inner wall of the mold. When the pressure plate 67 descends, it drives the pressure rod 710 to descend. When the bottom end of the pressure rod 710 contacts one side of the upper surface of the receiving plate 79, the receiving plate 79 is pressed and rotates along the axis of the fixed rod 77 through the torsion shaft 78. At this time, the powder slides down and is discharged from the device due to the influence of the inclined surface of the receiving plate 79, improving the convenience of powder recycling. When the pressure rod 710 rises and moves away from the receiving plate 79, the receiving plate 79 is rotated and reset due to the influence of the torsion spring at the hinge of the torsion shaft 78 and the fixed rod 77.

[0029] This invention provides a hot pressing device for producing epoxy resin boards using recycled waste epoxy resin powder. Many methods and approaches exist for implementing this technical solution; the above description is merely a preferred embodiment of the invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of this invention, and these improvements and modifications should also be considered within the scope of protection of this invention. All components not explicitly stated in this embodiment can be implemented using existing technologies.

Claims

1. A hot pressing device for producing epoxy resin boards using recycled waste epoxy resin powder, characterized in that, include: A base (1) is fixedly connected to a support plate (2) on its upper surface. A forging press (3) is fixedly connected to the top of the support plate (2). A die (4) is fixedly connected to the bottom free end of the forging press (3). A base plate (5) is provided below the die (4). Demolding device (6), the demolding device (6) is set above the base (1), the demolding device (6) is used to demold the epoxy resin board after hot pressing; A recycling device (7) is located below the forging press (3) and is used to recycle excess epoxy resin powder generated after demolding.

2. The hot pressing device for producing epoxy resin boards using recycled waste epoxy resin powder according to claim 1, characterized in that: The base plate (5) includes: The slot (8) is formed on the upper surface of the base (1), and the inner surface of the slot (8) is fitted with a slide (10). Connecting seat (9) is fixedly connected to the lower surface of base plate (5).

3. The hot pressing device for producing epoxy resin boards using recycled waste epoxy resin powder according to claim 2, characterized in that: The base plate (5) also includes: A retaining shaft (11) is fixedly connected to the front and rear sides of the slide block (10); Locking rod (12), which is slidably connected to the inner surface of the base (1), and a connecting frame (14) is fixedly connected to the bottom end of the locking rod (12). Tie rod (13), said tie rod (13) is set on the front and rear sides of the base plate (5); Elastic telescopic rod one (15), the elastic telescopic rod one (15) is fixedly connected to the lower surface of the base plate (5); Cam (16), the cam (16) is hinged to the front side of the base (1), and a lever (17) is fixedly connected to the upper surface of the cam (16). The connecting shaft (18) is fixedly connected to the left and right sides of the mold (4).

4. The hot pressing device for producing epoxy resin boards using recycled waste epoxy resin powder according to claim 3, characterized in that: The upper surfaces of the connecting seat (9) and the slide (10) are fixedly connected. The mating surface of the locking shaft (11) and the bottom surface of the inner wall of the slot (8) abut against each other. The bottom end of the elastic telescopic rod (15) and the bottom surface of the inner wall of the connecting frame (14) are fixedly connected. A torsion spring is provided at the hinge of the cam (16) and the base (1).

5. A hot pressing device for producing epoxy resin boards using recycled waste epoxy resin powder, as described in claim 4, characterized in that: The demolding device (6) includes: The bottom frame (61) is fixedly connected to the lower surface of the base plate (5), and the bottom outer surface of the bottom frame (61) is fixedly connected to the outer frame (62). The movable frame (63) is slidably connected to the inner surface of the outer frame (62).

6. The hot pressing device for producing epoxy resin boards using recycled waste epoxy resin powder according to claim 5, characterized in that: The demolding device (6) further includes: Through slot one (64), the through slot one (64) is opened on both sides of the outer frame (62), and the inner surface of the through slot one (64) is slidably connected to a connecting plate (66). The groove (65) is formed on both sides of the upper surface of the base (1), and the bottom surface of the inner wall of the groove (65) is fixedly connected with an elastic telescopic rod (68). Pressure plate (67), which is fixedly connected to the end of connecting plate (66) away from movable frame (63); Pressure rod 1 (69) is fixedly connected to the lower surface of the connecting shaft (18).

7. A hot pressing device for producing epoxy resin boards using recycled waste epoxy resin powder, as described in claim 6, characterized in that: The outer surfaces of the movable frame (63) and the bottom frame (61) are slidably connected, the inner surface of the bottom plate (5) and the movable frame (63) are slidably connected, the connecting plate (66) and the two sides of the movable frame (63) are fixedly connected, the pressure plate (67) and the two sides of the outer frame (62) are slidably connected, and the lower surface of the pressure plate (67) abuts against the top of the second elastic telescopic rod (68).

8. The hot pressing device for producing epoxy resin boards using recycled waste epoxy resin powder according to claim 7, characterized in that: The recycling device (7) includes: Through slot two (71), the through slot two (71) is opened on the front and rear sides of the bottom frame (61); Rotating rod (72), the rotating rod (72) is rotatably connected to both sides of the inner wall of the bottom frame (61), and the circumferential surface of the rotating rod (72) is fixedly connected to the wiping roller (73). Scraper (74), which is fixedly connected to both sides of the inner wall of the bottom frame (61).

9. A hot pressing device for producing epoxy resin boards using recycled waste epoxy resin powder, as described in claim 8, characterized in that: The recycling device (7) also includes: A baffle (75) is fixedly connected to the inner wall of the top of the slot (8); The material collection trough (76) is provided on both sides of the upper surface of the base (1); A fixing rod (77) is fixedly connected to the bottom of the inner wall of the material collection trough (76). A torsion shaft (78) is hinged to the circumferential surface of the fixing rod (77). A receiving plate (79) is fixedly connected to the upper surface of the torsion shaft (78). Pressure bar two (710) is fixedly connected to the front and rear sides of the lower surface of pressure plate (67).

10. A hot pressing device for producing epoxy resin boards using recycled waste epoxy resin powder, as described in claim 9, characterized in that: The circumferential surface of the wiping roller (73) abuts against the inner wall of the movable frame (63), the circumferential surface of the wiping roller (73) abuts against the top of the scraper (74), a torsion spring is provided at the hinge of the torsion shaft (78) and the fixed rod (77), the receiving plate (79) abuts against the bottom inner wall of the collecting trough (76), and the bottom end of the pressure rod (710) abuts against the upper surface of the base (1).

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