Preparation method of pet plate

Abstract

The invention belongs to the technical field of pet plates, and particularly relates to a pet plate preparation method which comprises a plate body. A plurality of filling particles are arranged in a pore channel to be sealed of the plate body, a filling layer is attached to the face, with the pore channel, of the plate body, the filling particles and the filling layer are made of pet materials, and the melting point of the filling particles and the melting point of the filling layer are lower than the melting point of the plate body; when the plate body is processed, the filling particles similar to the material of the plate body are pre-filled in the hole channels to be sealed, and the filling particles in the hole channels can be driven to be synchronously melted when the filling layer is heated and melted by a heating plate subsequently, so that the hole channels can be fully filled and blocked by the melted material, and the hole sealing quality of the plate body is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of PET boards, in particular to a method for preparing a PET board. Background Art

[0002] PET foam board is a kind of pet board, and the way to seal the surface of the foam board is to use a high-temperature heating plate directly attached to the two sides of the foam board to melt a layer of the surface of the foam board in a short time, and then replace it with a cold flat plate to apply a certain pressure on the two sides of the foam board to shrink or merge the foam holes on the surface of the foam board, thereby achieving the effect of surface sealing.

[0003] A Chinese patent with the publication number CN211994475U discloses a novel foam board surface sealing structure. The utility model sprays a low-melting-point spray layer on the surface of a high-melting-point foam board, and a separation film layer that can be easily separated and torn is attached to the outside of the low-melting-point spray layer, so that the heating plate and the low-melting-point spray layer are isolated and heated, and the low-melting-point spray layer is melted by the heating plate, and the low-melting-point spray layer liquid enters the pores of the foam board under pressure, so as to achieve the effect of foam surface sealing. Since the materials of the low-melting-point spray layer and the high-melting-point foam board are similar, a better sealing effect can be achieved. At the same time, the heating temperature of the low-melting-point spray layer is not as high as that of the high-melting-point foam board, so the utility model reduces energy consumption, has the advantage of large-scale production, improves operating efficiency, reduces the quality risk of foam board surface sealing, and improves the working environment of workers. (ESM) The same invention has been applied for an invention patent on the same day.

[0004] However, when the surface of the PET foam board in the above technology is sealed, although the pores can be filled by heating and melting the low-melting-point spray layer on the surface of the board, since the pores are less in the molten state corresponding to the spray layer material, it is difficult to fully fill and seal when the pores are large, which affects the sealing quality of the board.

[0005] Therefore, the present invention provides a method for preparing a PET board. Summary of the invention

[0006] In order to make up for the deficiencies of the prior art, at least one technical problem raised in the background technology is solved.

[0007] The technical solution adopted by the present invention to solve its technical problems is: a PET board described in the present invention comprises a board body; a plurality of filling particles are arranged in the channels of the board body to be sealed, a filling layer is attached to one side of the board body containing the channels, the filling particles and the filling layer are respectively made of PET materials, and the melting points of the filling particles and the filling layer are lower than the melting point of the board body; when the surface of the PET foam board in the prior art is sealed, although the channels can be filled by heating and melting the low-melting-point spray layer on the surface of the board body, due to the small amount of spray layer material in the molten state corresponding to the channels, it is difficult to fully fill and seal the channels when they are large, affecting the sealing quality of the board; and when the board body in the present invention is processed, by pre-filling the channels to be sealed with filling particles similar to the board body material, when the subsequent heating plate heats and melts the filling layer, it can simultaneously drive the filling particles in the channels to melt synchronously, so that the channels can be fully filled and sealed by the molten material, thereby improving the sealing quality of the board.

[0008] A method for preparing a PET board, the method is used to prepare the above-mentioned board, and the steps of the method are as follows: S1: placing filling particles in a storage chamber of a filling device, and filling the filling particles into the holes to be sealed in the plate body through a filling nozzle of the filling device; S2: Then, the filling layer is laminated to the side of the plate to be sealed by using a laminating component, and then a separation layer having a higher melting point than the filling layer is laminated on the surface; since the melting point of the separation layer is higher than that of the filling layer, the filling layer can be heated indirectly by heating the separation layer, thereby reducing the direct contact between the heating plate and the filling layer, which results in the filling layer being adhered to the heating plate after melting and being difficult to clean; S3: Then, a high-temperature heating plate is attached to the surface of the separation layer, so that the filling layer and the filling particles are melted by heat, and the pores are sealed, and then the separation layer is torn off from the surface of the plate; The filling device includes a support frame, a storage cavity is connected to the support frame, a filling nozzle is connected to the bottom end of the storage cavity, and a feeding assembly is provided on the support frame, and the feeding assembly can drive the plate body to fit with the bottom end of the filling nozzle; when working, the plate body can move slowly from the filling nozzle driven by the feeding assembly, and when the channel on the plate body moves to the bottom end of the filling nozzle, the filling particles inside the storage cavity automatically flow into the channel under the action of their own gravity, so that the filling particles can be conveniently and quickly filled in the channel on the plate body.

[0009] Preferably, the side wall of the filling nozzle near the end of the feeding assembly is rotatably connected to the side wall of the storage chamber via a torsion spring; when the filling particles flowing into the channel of the plate body pass over the top surface of the plate body, as the plate body continues to move, the filling particles protruding from the top of the channel can drive the side wall of the filling nozzle connected to the torsion spring to rotate, thereby allowing the channel on the plate body to smoothly disengage from the filling nozzle, reducing the rigid extrusion between the filling particles protruding from the top of the channel and the filling nozzle, which affects the smooth turnover of the plate body.

[0010] Preferably, the feeding assembly includes at least two groups of symmetrically distributed cylindrical rollers, both ends of the rollers are rotatably connected to the support frame, one end of the rollers is connected to the driving assembly, and a heating assembly is arranged inside the rollers located at the top of the end of the feeding assembly; the symmetrically arranged rollers can clamp the plate body for movement, and when the plate body moves to the rollers in a high temperature state provided with the heating assembly, the side walls of the rollers can heat and soften the filling particles protruding to the outer end of the channel, and can completely press the softened filling particles into the channel, thereby reducing the protrusion of the filling particles outside the channel, which affects the subsequent separation layer and the smooth fitting of the plate body.

[0011] Preferably, a scraper is provided on the side of the roller with the heating component away from the storage chamber, and the scraper is in contact with the side wall of the roller on one side and can scrape off the softened filling particles adhered to the roller; when the roller heats and squeezes the filling particles in the channel and moves away from the plate body, a part of the filling particles will adhere to the side wall of the roller. At this time, the scraper can scrape off the impurities on the side wall of the roller, thereby improving the cleanliness of the roller surface and allowing the roller to work smoothly.

[0012] Preferably, a feed port is provided at one end of the drum provided with the heating component, a group of annular evenly distributed discharge holes are provided on the side wall of the drum, a sealing block is connected to the inside of the discharge hole through a spring, an inner end of the sealing block connected to the spring is provided with a discharge trough connected to the outer end side wall of the sealing block, and a group of annular evenly distributed magnetic layers are provided on the side wall of the drum symmetrical to the drum provided with the heating component, the number of the magnetic layers is the same as the number of the discharge holes, and the magnetic layers can attract the sealing blocks moving to the bottom end of the drum; the filling particles scraped off the drum are collected, and The particles are fed into the drum through the feed port, and the collected filling particles are heated into a molten state by the high-temperature drum. When the channel is large and there are fewer filling particles inside, when the bottom end of the drum rotates to the channel, the blocking block at its bottom is adsorbed by the magnetic layer on the symmetrical drum and moves toward the channel until the discharge groove on the blocking block slides out of the outer end of the discharge hole and is no longer blocked by the side wall of the discharge hole, so that the filling particle material in the molten state inside the drum can flow into the channel, thereby making it possible to reuse the collected filling particles and improving the sealing quality of the plate channel.

[0013] Preferably, a sliding sleeve is connected to the support frame corresponding to one side of the bottom end of the scraper block, and the end of the sliding sleeve is slidably connected with a sliding plate, and an elastic member is connected between the sliding plate and the inner end of the sliding sleeve, and the end of the sliding plate close to the roller is provided with an arc plate bent toward the side of the scraper block, and the free end of the arc plate is in contact with the side wall of the roller, and the top surface of the arc plate is provided with a guide block with a gradually decreasing height, and the end of the guide block with a lower height is provided with a discharge pipe, and the other end of the discharge pipe is connected with the feed port of the roller; when the filling particles on the roller move to the arc plate, the filling particles can exert pressure on the arc plate, so that the sliding plate moves toward the inside of the sliding sleeve, so that the filling particles on the roller can smoothly pass over the arc plate and be scraped off by the scraper block, and then the scraped filling particles fall into the arc plate and flow into the inside of the roller through the discharge pipe under the action of the guide block, so that the filling particles scraped off the roller can be automatically collected and reused.

[0014] Preferably, a magnetic plate is installed on the slide plate, a group of magnetic blocks that are evenly distributed in an annular shape and can repel the magnetic plate are provided on the side wall of the roller, and a group of spray holes inclined to one side of the roller are opened on the bottom surface of the inner end of the sleeve; when the roller drives the magnetic block to move to the arc plate, the magnetic plate drives the slide plate to slide into the sleeve under the repulsion of the magnetic block, and presses the gas inside it out of the spray holes, so that the filling particles adhered to the roller can be cooled and solidified, reducing the situation where the filling particles fall off and cannot be collected smoothly when squeezed with the arc plate, and at the same time, as the slide plate slides inside the sleeve, it can also promote the filling particles that fall off the arc plate to flow to the discharge pipe and be discharged.

[0015] Preferably, the outer end of the discharge hole is provided with a funnel-shaped cavity which is wide on the outside and narrow on the inside, and the outer end of the sealing block is arranged in a cone shape; by setting the shape of the outer end of the discharge hole and the sealing block, the sealing block with a narrower end can move more smoothly into each channel, so that the material inside the drum can effectively flow into each channel, reducing the situation where the material inside the discharge hole is difficult to flow into the channel due to the misalignment of the channel with the sealing block.

[0016] Preferably, a cavity is provided inside the blocking block, and the blocking block can float in the filling granular material in a molten state; the provided cavity can improve the floating effect of the blocking block in the liquid, and when the liquid level of the molten material flowing into the channel gradually rises, the material liquid can drive the blocking block to float upward and effectively reset, thereby reducing the interference between the blocking block and the side wall of the channel during the rotation of the drum.

[0017] The beneficial effects of the present invention are as follows: 1. When the plate body of the present invention is processed, the holes to be sealed are pre-filled with filling particles similar to the plate body material. When the subsequent heating plate heats and melts the filling layer, the filling particles in the holes can be melted synchronously, so that the holes can be fully filled and sealed with the molten material, thereby improving the sealing quality of the plate. 2. The plate body in the present invention can move slowly from the filling nozzle driven by the feeding assembly. When the channel on the plate body moves to the bottom end of the filling nozzle, the filling particles inside the storage cavity automatically flow into the channel under the action of their own gravity, so that the filling particles can be conveniently and quickly filled in the channel of the plate body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] The present invention will be further described below in conjunction with the accompanying drawings.

[0020] Figure 1 It is a structural schematic diagram of the plate in the present invention; Figure 2 It is a diagram of the method steps of the present invention; Figure 3 It is a structural schematic diagram of the packing device in the present invention; Figure 4 yes Figure 3 The enlarged view of point A in the middle; Figure 5 yes Figure 3 The enlarged view of point B in the middle; Figure 6 It is a structural schematic diagram of the guide block in the present invention; Figure 7 is a schematic diagram of the partial structure of the drum in the second embodiment; In the figure: plate body 1, channel 2, filling particles 3, filling layer 4, separation layer 5, support frame 6, storage chamber 7, filling nozzle 8, torsion spring 9, roller 10, heating component 11, scraper block 12, discharge hole 13, blocking block 14, discharge trough 15, magnetic layer 16, sleeve 17, slide plate 18, arc plate 19, guide block 20, discharge pipe 21, magnetic plate 22, magnetic block 23, spray hole 24, funnel-shaped cavity 25, cavity 26. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] See also Figure 1 As shown, a PET board described in the present invention comprises a board body 1; a plurality of filling particles 3 are arranged in the channels 2 to be sealed of the board body 1, and a filling layer 4 is attached to one side of the board body 1 containing the channels 2, and the filling particles 3 and the filling layer 4 are respectively made of PET materials, and the melting points of the filling particles 3 and the filling layer 4 are lower than the melting point of the board body 1; when the surface of the PET foam board in the prior art is sealed, although the channels 2 can be filled by heating and melting the low-melting-point spray layer on the surface of the board body 1, due to the small amount of spray layer material in the molten state corresponding to the channels 2, it is difficult to fully fill and seal the channels 2 when they are large, which affects the sealing quality of the board; and when the board body 1 in the present invention is processed, by pre-filling the channels 2 to be sealed with filling particles 3 similar to the material of the board body 1, when the subsequent heating plate heats and melts the filling layer 4, it can simultaneously drive the filling particles 3 in the channels 2 to melt synchronously, so that the channels 2 can be fully filled and sealed by the molten material, thereby improving the sealing quality of the board.

[0023] Embodiment 1: See also Figure 2-Figure 4 As shown, a method for preparing a PET board according to an embodiment of the present invention is used to prepare the above-mentioned board, and the steps of the method are as follows: S1: placing the filling particles 3 in the storage chamber 7 of the filling device, and filling the filling particles 3 into the hole 2 to be sealed in the plate body 1 through the filling nozzle 8 of the filling device; S2: Then, the filling layer 4 is laminated to the side of the plate body 1 to be sealed by using a laminating component, and then a separation layer 5 having a higher melting point than the filling layer 4 is laminated on the surface thereof; since the melting point of the separation layer 5 is higher than that of the filling layer 4, the filling layer 4 can be heated indirectly by heating the separation layer 5, thereby reducing the direct contact between the heating plate and the filling layer 4, which results in the filling layer 4 being adhered to the heating plate after melting and being difficult to clean; S3: Then, a high-temperature heating plate is attached to the surface of the separation layer 5, so that the filling layer 4 and the filling particles 3 are melted by heat, and the pores 2 are sealed, and then the separation layer 5 is torn off from the surface of the plate body 1; The filling device includes a support frame 6, to which a storage cavity 7 is connected, and a filling nozzle 8 is connected to the bottom end of the storage cavity 7, and a feeding assembly is provided on the support frame 6, and the feeding assembly can drive the plate body 1 to fit with the bottom end of the filling nozzle 8; when working, the plate body 1 can move slowly from the filling nozzle 8 driven by the feeding assembly, and when the channel 2 on the plate body 1 moves to the bottom end of the filling nozzle 8, the filling particles 3 inside the storage cavity 7 automatically flow into the channel 2 under the action of their own gravity, so that the filling particles 3 can be conveniently and quickly filled in the channel 2 on the plate body 1.

[0024] The side wall of the filling nozzle 8 near the end of the feeding assembly is rotatably connected to the side wall of the storage chamber 7 via a torsion spring 9; when the filling particles 3 flowing into the channel 2 of the plate body 1 pass over the top surface of the plate body 1, as the plate body 1 continues to move, the filling particles 3 protruding from the top of the channel 2 can drive the side wall of the filling nozzle 8 connected to the torsion spring 9 to rotate, thereby allowing the channel 2 on the plate body 1 to smoothly disengage from the filling nozzle 8, reducing the rigid extrusion between the filling particles 3 protruding from the top of the channel 2 and the filling nozzle 8, which affects the smooth turnover of the plate body 1.

[0025] like Figure 3 , Figure 5 and Figure 6 As shown, the feeding assembly includes at least two groups of symmetrically distributed cylindrical rollers 10, both ends of the rollers 10 are rotatably connected to the support frame 6, one end of the rollers 10 is connected to the driving assembly, and a heating assembly 11 is arranged inside the rollers 10 located at the top of the end of the feeding assembly; the symmetrically arranged rollers 10 can clamp the plate body 1 for movement, and when the plate body 1 moves to the rollers 10 in a high temperature state provided with the heating assembly 11, the side walls of the rollers 10 can heat and soften the filling particles 3 protruding to the outer end of the channel 2, and can completely press the softened filling particles 3 into the channel 2, thereby reducing the protrusion of the filling particles 3 outside the channel 2, which affects the subsequent smooth fitting of the separation layer 5 and the plate body 1.

[0026] A scraper 12 is provided on the side of the roller 10 provided with a heating component 11 away from the storage chamber 7. The scraper 12 is in contact with the side wall of the roller 10 on one side and can scrape off the softened filling particles 3 adhered to the roller 10. When the roller 10 heats and squeezes the filling particles 3 in the channel 2 and moves away from the plate body 1, a part of the filling particles 3 will adhere to the side wall of the roller 10. At this time, the scraper 12 can scrape off the impurities on the side wall of the roller 10, thereby improving the cleanliness of the surface of the roller 10 and allowing the roller 10 to work smoothly.

[0027] A feed port is provided at one end of the drum 10 provided with a heating component 11, a group of annular evenly distributed discharge holes 13 are provided on the side wall of the drum 10, a sealing block 14 is connected to the inside of the discharge hole 13 through a spring, and a discharge trough 15 connected to the outer end side wall of the sealing block 14 is provided at the inner end of the sealing block 14 connected to the spring, and a group of annular evenly distributed magnetic layers 16 are provided on the side wall of the drum 10 symmetrical to the drum 10 provided with the heating component 11, and the number of the magnetic layers 16 is the same as that of the discharge holes 13, and the magnetic layers 16 can attract the sealing blocks 14 moving to the bottom end of the drum 10; the filling particles 3 scraped off the drum 10 are collected, And it is put into the inside of the drum 10 through the feed port, and the collected filling particles 3 are heated into a molten state by the high-temperature drum 10. When the channel 2 is large and there are fewer filling particles 3 inside it, when the bottom end of the drum 10 rotates to the channel 2, the blocking block 14 at its bottom is adsorbed by the magnetic layer 16 on the symmetrical drum 10 and moves into the channel 2 until the discharge groove 15 on the blocking block 14 slides out of the outer end of the discharge hole 13 and is no longer blocked by the side wall of the discharge hole 13, so that the filling particles 3 material in the molten state inside the drum 10 can flow into the channel 2, so that the collected filling particles 3 can be reused and the sealing quality of the channel 2 of the plate body 1 is improved.

[0028] A sleeve 17 is connected to the support frame 6 corresponding to one side of the bottom end of the scraper block 12, and a slide plate 18 is slidably connected to the end of the slide sleeve 17. An elastic member is connected between the slide plate 18 and the inner end of the sleeve 17. An arc plate 19 bent toward the scraper block 12 is provided at one end of the slide plate 18 close to the roller 10. The free end of the arc plate 19 is in contact with the side wall of the roller 10. A guide block 20 with a gradually decreasing height is provided on the top surface of the arc plate 19. A discharge pipe 21 is provided at the lower end of the guide block 20. The discharge pipe 21 is provided at the lower end of the guide block 20. The other end of the roller 10 is connected to the feed port of the roller 10; when the filling particles 3 on the roller 10 move to the arc plate 19, the filling particles 3 can exert pressure on the arc plate 19, so that the slide plate 18 moves toward the inside of the sliding sleeve 17, so that the filling particles 3 on the roller 10 can smoothly pass over the arc plate 19 and be scraped off by the scraper block 12, and then the scraped filling particles 3 fall on the arc plate 19, and flow into the inside of the roller 10 through the discharge pipe 21 under the action of the guide block 20, so that the filling particles 3 scraped off the roller 10 can be automatically collected and reused.

[0029] A magnetic plate 22 is installed on the slide plate 18, and a group of magnetic blocks 23 that are evenly distributed in an annular shape and can repel the magnetic plate 22 are provided on the side wall of the drum 10. A group of spray holes 24 inclined to one side of the drum 10 are opened on the bottom surface of the inner end of the sleeve 17; when the drum 10 drives the magnetic block 23 to move to the arc plate 19, the magnetic plate 22 drives the slide plate 18 to slide inside the sleeve 17 under the repulsion of the magnetic block 23, and presses the gas inside it out from the spray holes 24, so that the filling particles 3 adhered to the drum 10 can be cooled and solidified, reducing the situation where the filling particles 3 fall off when squeezed with the arc plate 19 and cannot be collected smoothly. At the same time, as the slide plate 18 slides inside the sleeve 17, it can also promote the filling particles 3 that fall on the arc plate 19 to flow to the discharge pipe 21 and be discharged.

[0030] Embodiment 2: like Figure 7 As shown, compared with Example 1, another implementation of the present invention is: the outer end of the discharge hole 13 is provided with a funnel-shaped cavity 25 which is wide on the outside and narrow on the inside, and the outer end of the blocking block 14 is arranged in a cone shape; by setting the shape of the outer end of the discharge hole 13 and the blocking block 14, the blocking block 14 with a narrower end can move more smoothly into each channel 2, so that the material inside the drum 10 can effectively flow into each channel 2, reducing the situation where the material inside the discharge hole 13 is difficult to flow into the channel 2 due to the misalignment of the channel 2 with the blocking block 14.

[0031] A cavity 26 is provided inside the blocking block 14, and the blocking block 14 can float in the filling particle 3 material in a molten state; the provided cavity 26 can improve the floating effect of the blocking block 14 in the liquid, and when the liquid level of the molten material flowing into the channel 2 gradually rises, the material liquid can drive the blocking block 14 to float upward and effectively reset, thereby reducing the interference between the blocking block 14 and the side wall of the channel 2 during the rotation of the drum 10.

[0032] Working principle: the plate body 1 can move slowly from the filling nozzle 8 driven by the feeding assembly. When the channel 2 on the plate body 1 moves to the bottom of the filling nozzle 8, the filling particles 3 in the storage chamber 7 automatically flow into the channel 2 under the action of their own gravity, so that the filling particles 3 can be conveniently and quickly filled into the channel 2 on the plate body 1; when the filling particles 3 flowing into the channel 2 of the plate body 1 pass over the top surface of the plate body 1, as the plate body 1 continues to move, the filling particles 3 protruding from the top of the channel 2 can drive the side wall of the filling nozzle 8 connected to the torsion spring 9 to rotate, so that the channel 2 on the plate body 1 is smoothly separated from the filling nozzle 8, reducing the filling particles 3 protruding from the top of the channel 2 and the filling nozzle 8. Rigid extrusion affects the smooth turnover of the plate body 1; the symmetrically arranged rollers 10 can clamp the plate body 1 for movement. When the plate body 1 moves to the roller 10 provided with a heating component 11 in a high temperature state, the side wall of the roller 10 can heat and soften the filling particles 3 protruding to the outer end of the channel 2, and can completely press the softened filling particles 3 into the channel 2, reducing the protrusion of the filling particles 3 outside the channel 2 and affecting the subsequent separation layer 5 and the plate body 1. The smooth fit; when the roller 10 heats and extrude the filling particles 3 in the channel 2 and moves away from the plate body 1, a part of the filling particles 3 will adhere to the side wall of the roller 10. At this time, the scraper 12 provided can scrape the side wall of the roller 10 The impurities on the drum 10 are scraped off, which improves the cleanliness of the surface of the drum 10 and enables the drum 10 to work smoothly; the filling particles 3 scraped off the drum 10 are collected and put into the drum 10 through the feed port, and the collected filling particles 3 are heated into a molten state by the high-temperature drum 10. When the channel 2 is large and there are fewer filling particles 3 inside it, when the bottom end of the drum 10 rotates to the channel 2, the blocking block 14 at the bottom is adsorbed by the magnetic layer 16 on the symmetrical drum 10 and moves into the channel 2 until the discharge groove 15 on the blocking block 14 slides out of the outer end of the discharge hole 13 and is no longer blocked by the side wall of the discharge hole 13, so that the inside of the drum 10 is clean. The filling particles 3 in a partially molten state can flow into the channel 2, so that the collected filling particles 3 can be reused and the sealing quality of the channel 2 of the plate body 1 is improved; when the filling particles 3 on the roller 10 move to the arc plate 19, the filling particles 3 can exert pressure on the arc plate 19, so that the slide plate 18 moves toward the inside of the sliding sleeve 17, so that the filling particles 3 on the roller 10 can smoothly pass over the arc plate 19 and be scraped off by the scraper block 12, and then the scraped filling particles 3 fall on the arc plate 19, and flow into the inside of the roller 10 through the discharge pipe 21 under the action of the guide block 20, so that the filling particles 3 scraped off the roller 10 can be automatically collected and reused;When the roller 10 drives the magnetic block 23 to move to the arc plate 19, the magnetic plate 22 drives the slide plate 18 to slide into the inside of the sleeve 17 under the repulsion of the magnetic block 23, and presses the gas inside it out from the nozzle 24, so that the filling particles 3 adhering to the roller 10 can be cooled and solidified, and the filling particles 3 can be reduced from falling off and unable to be collected smoothly when being squeezed by the arc plate 19. At the same time, as the slide plate 18 slides inside the sleeve 17, it can also promote the filling particles 3 that fall off the arc plate 19 to flow to the discharge pipe 21 and be discharged; by setting the shape of the outer end of the discharge hole 13 and the blocking block 14, The blocking block 14 with a narrower end can move more smoothly into each channel 2, so that the material inside the drum 10 can effectively flow into each channel 2, reducing the situation where the channel 2 is misaligned with the blocking block 14, resulting in the material inside the discharge hole 13 being difficult to flow into the channel 2; the cavity 26 can improve the floating effect of the blocking block 14 in the liquid. When the liquid level of the molten material flowing into the channel 2 gradually rises, the material liquid can drive the blocking block 14 to float upward and effectively reset, reducing the situation where the blocking block 14 interferes with the side wall of the channel 2 during the rotation of the drum 10. ;

[0033] The basic principles, main features and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and the description in the specification are only to illustrate the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A method for preparing a PET board, comprising a board body (1); characterized in that: A plurality of filling particles (3) are arranged in the hole (2) to be sealed of the plate body (1); a filling layer (4) is attached to one side of the plate body (1) containing the hole (2); the filling particles (3) and the filling layer (4) are respectively made of PET material, and the melting points of the filling particles (3) and the filling layer (4) are lower than the melting point of the plate body (1); The method comprises the following steps: S1: placing filling particles (3) in a storage chamber (7) of a filling device, and filling the filling particles (3) into the hole (2) to be sealed of the plate body (1) through a filling nozzle (8) of the filling device; S2: subsequently using a bonding component to bond a filling layer (4) to the side of the hole to be sealed on the plate body (1), and then bonding a separation layer (5) having a higher melting point than the filling layer (4) to the surface; S3: subsequently bonding a high-temperature heating plate to the surface of the separation layer (5); The filling layer (4) and the filling particles (3) are combined so that the filling layer (4) and the filling particles (3) are melted by heat, and the pores (2) are sealed, and then the separation layer (5) is torn off from the surface of the plate body (1); the filling device comprises a support frame (6), the support frame (6) is connected to a storage cavity (7), the bottom end of the storage cavity (7) is connected to a filling nozzle (8), and the support frame (6) is provided with a feeding assembly, and the feeding assembly can drive the plate body (1) to fit with the bottom end of the filling nozzle (8); The side wall of the filling nozzle (8) close to the end of the feeding assembly is rotatably connected to the side wall of the storage chamber (7) via a torsion spring (9); The feeding assembly comprises at least two groups of symmetrically distributed cylindrical rollers (10), both ends of the rollers (10) being rotatably connected to a support frame (6), one end of the rollers (10) being connected to a driving assembly, and a heating assembly (11) being arranged inside the rollers (10) located at the top of the end of the feeding assembly.

2. The method for preparing a PET sheet according to claim 1, characterized in that: A scraper (12) is provided on the side of the drum (10) provided with the heating assembly (11) away from the storage chamber (7); the scraper (12) is in contact with the side wall of the drum (10) on one side and can scrape off the softened filling particles (3) adhered to the drum (10).

3. The method for preparing a PET sheet according to claim 2, characterized in that: A feed port is provided at one end of a roller (10) provided with a heating component (11), a group of annular evenly distributed discharge holes (13) are provided on the side wall of the roller (10), a sealing block (14) is connected to the inside of the discharge hole (13) via a spring, a discharge trough (15) is provided at the inner end of the sealing block (14) connected to the spring and connected to the outer end side wall of the sealing block (14), and a group of annular evenly distributed magnetic layers (16) are provided on the side wall of the roller (10) symmetrical to the roller (10) provided with the heating component (11), the number of the magnetic layers (16) is the same as the number of the discharge holes (13), and the magnetic layers (16) can attract the sealing block (14) that moves to the bottom end of the roller (10).

4. The method for preparing a PET sheet according to claim 3, characterized in that: A sliding sleeve (17) is connected to the support frame (6) corresponding to one side of the bottom end of the scraper block (12); a slide plate (18) is slidably connected to the end of the slide sleeve (17); an elastic member is connected between the slide plate (18) and the inner end of the slide sleeve (17); an arc-shaped plate (19) bent toward the side of the scraper block (12) is provided at one end of the slide plate (18) close to the roller (10); the free end of the arc-shaped plate (19) is in contact with the side wall of the roller (10); a guide block (20) with a gradually decreasing height is provided on the top surface of the arc-shaped plate (19); a discharge pipe (21) is provided at the lower end of the guide block (20); the other end of the discharge pipe (21) is connected to the feed port of the roller (10).

5. The method for preparing a PET sheet according to claim 4, characterized in that: A magnetic plate (22) is mounted on the slide plate (18), a group of magnetic blocks (23) are evenly distributed in an annular shape and are capable of repelling the magnetic plate (22) are disposed on the side wall of the roller (10), and a group of spray holes (24) are disposed on the bottom surface of the inner end of the sliding sleeve (17) and are inclined toward one side of the roller (10).

6. The method for preparing a PET sheet according to claim 5, characterized in that: The outer end of the discharge hole (13) is provided with a funnel-shaped cavity (25) which is wide outside and narrow inside, and the outer end of the blocking block (14) is arranged in a cone shape.

7. The method for preparing a PET sheet according to claim 6, characterized in that: The blocking block (14) is provided with a cavity (26) inside, and the blocking block (14) is capable of floating in the filling particle (3) material in a molten state.

Images