Sheet extrusion equipment and method of use thereof

Abstract

The present invention specifically relates to a plate extrusion device and a method for using the same, comprising a plate discharging composite head, a plurality of feed ends arranged on one side of the plate discharging composite head, and a plurality of thermoplastic extruders correspondingly connected to the feed ends of the plate discharging composite head. The plate discharging composite head and four thermoplastic extruders matched therewith work in coordination to ensure that materials from different thermoplastic extruders can be layered and pressurized and conveyed through four conical pressurized ports, thereby achieving synchronous and precise compounding of multiple layers of materials in a plate discharging slot, ensuring close bonding between layers, and improving the structural stability of the composite plate. The horizontal plate cavity and the plate discharging slot are horizontally connected to ensure a smooth transition of the composite material during the extrusion molding process, avoiding the common extrusion instability or fault problems in traditional equipment. Combined with the use of a cooler, the composite plate can be quickly cooled and molded after extrusion, which not only improves production efficiency, but also ensures the accuracy of the plate size and surface quality.

Description

Technical Field

[0001] The present invention specifically relates to a plate extrusion device and a method for using the same, and relates to the technical field of plate production and processing. Background Art

[0002] In the plastic processing industry, extrusion molding technology occupies a pivotal position, especially in the production of plates and sheets, its importance is self-evident. This process, commonly known as extrusion, is based on the core of the material between the barrel and the screw conveyor rod of the extruder. While undergoing thermal plasticization, it is pushed forward by the propulsion force of the screw conveyor rod, and finally formed by the die head to produce continuous plates or sheets, and then undergo subsequent cooling and cutting processes. However, the existing plate extrusion equipment has obvious functional defects, especially in the production of composite material plates. The existing production equipment cannot feed the material quickly and evenly filter and heat the materials in sections. The heating effect and conveying efficiency of the hot melt material need to be improved. In addition, hot melt conveying is difficult to effectively realize the rapid compounding of multi-layer materials, and the interlayer bonding force is weak, which affects the overall performance and service life of the plate. The overall use effect of the die head is not good, which affects the extrusion quality and efficiency of the plate. At the same time, the installation and adjustment of the die head are inconvenient, which increases the complexity of equipment maintenance. For this reason, it is necessary for our company to propose a plate extrusion equipment and its use method to improve the existing technology. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention aims to provide a plate extrusion device and a method of using the same, which provide a more flexible and efficient solution for the composite plate extrusion field to solve the problems mentioned in the above background technology.

[0004] In order to achieve the above-mentioned object, the present invention is realized by the following technical scheme: a sheet extrusion equipment, including a sheet discharging compound die head, a plurality of feed ends arranged on one side of the sheet discharging compound die head, and a plurality of thermoplastic extruders connected to each feed end of the sheet discharging compound die head;

[0005] The plate discharging composite machine head comprises a front material discharging platform and a rear connecting block which are locked and connected to each other, each of the feed ends is arranged at the rear side of the rear connecting block, a plate discharging slot is provided at the front end of the front material discharging platform, a plurality of mutually connected conical pressurizing ports and horizontal plate cavities are provided on the inner side of the front material discharging platform, wherein the conical pressurizing ports are respectively connected to the feed ends, and the horizontal plate cavity is connected and arranged on one side of the plate discharging slot, a cooler is installed on the upper side of the front material discharging platform, and the cooler is adjacent to the upper side of the plate discharging slot;

[0006] The thermoplastic extruder comprises a crushed material feed hopper assembly and a hot melt conveying pipe connected to the bottom of the crushed material feed hopper assembly, the end of the hot melt conveying pipe is connected to a transition conveying pipe, and is connected to the feed end through the transition conveying pipe, a metering pump is installed in the middle of the transition conveying pipe, a screw conveying rod is rotatably arranged inside the hot melt conveying pipe, and a driving motor head for driving the screw conveying rod to rotate is installed on one side of the thermoplastic extruder;

[0007] The spiral conveying rod is fixed with a plurality of first dispersion filter plates, and the outer side of each first dispersion filter plate abuts against the inner wall of the hot melt conveying tube, and a second dispersion filter plate is installed at the end of the hot melt conveying tube;

[0008] An external air duct is sleeved on the outer side of the middle part of the hot melt delivery tube, and a closed hot air tube cavity is formed in between. A plurality of air inlets connected to the hot air tube cavity are opened at the bottom of the external air duct, and a heating fan is installed at the bottom of each air inlet for uniformly heating the hot melt delivery tube body. An air outlet connected to the hot air tube cavity is opened on one side of the middle part of the external air duct, and a vacuum tube is interspersed in the air outlet. One end of the vacuum tube is connected to a vacuum pump, and the other end is connected to the inside of the hot melt delivery tube, so that the hot melt delivery tube is vacuumed.

[0009] Further improvements based on the above technical solution are: a connecting pipe is installed on the front side of the rear connecting block, and a plurality of material ports are opened on the inner side of the connecting pipe and are respectively connected with each feed end, the end of the connecting pipe is protrudingly arranged on the front side of the rear connecting block, a slot is opened on the rear side of the front material discharging platform, and the protruding part of the connecting pipe is embedded and installed by the slot adapter, the slot is located on one side of the conical pressurization port, and each material port on the inner side of the connecting pipe is respectively connected to one side of each conical pressurization port.

[0010] A further improvement based on the above technical solution is that an L-shaped baffle is rotatably connected to the bottom front side of the front material discharging platform, and the L-shaped baffle is movably located at the front side of the plate discharging slot. A telescopic push rod is hinged at the bottom of the front material discharging platform to control the flipping activity of the L-shaped baffle.

[0011] Further improvements based on the above technical solution are: a movable mounting frame is arranged at the bottom of the plate discharging compound machine head, a guide tube and a rotating screw are vertically penetrated through the upper side of the movable mounting frame, and the top ends of the guide tube and the rotating screw are connected to the bottom of the plate discharging compound machine head, and a hand wheel is installed at the bottom end of the rotating screw.

[0012] Further improvements based on the above technical solution are: the crushed material feeding hopper assembly includes a barrel, a conical hopper is integrally arranged at the bottom of the barrel, a lifting cone bucket is slidably arranged on the inner side of the barrel, the outer bottom surface of the lifting cone bucket is fitted with the inner surface of the conical hopper, side openings are respectively provided on the four sides of the bottom of the lifting cone bucket, and the top opening flange of the lifting cone bucket is provided with an inner inclined surface inclined inwardly, a hollow cross is fixedly provided in the middle of the inner side of the lifting cone bucket, a mixing and crushing assembly is rotatably installed in the middle of the hollow cross and is located at the bottom of the inner side of the conical hopper, and each of the side openings is distributed on the four sides of the mixing and crushing assembly.

[0013] Further improvements based on the above technical solution are: the mixing and crushing assembly includes a movable sleeve rotatably installed in the middle of the hollow cross, and a plurality of crushing blades and crushing and dispersing blades of suitable sizes are installed on the movable sleeve, and each crushing and dispersing blade is located on the upper side of the crushing blade, and the size of each crushing and dispersing blade and crushing blade decreases step by step from top to bottom.

[0014] Further improvements based on the above technical solution are: an upper mounting plate is fixedly provided at intervals on the upper side of the barrel, a polygonal shaft is rotatably installed in the middle of the upper mounting plate, the polygonal shaft passes through the bottom of the lifting cone bucket and extends to the inner side of the bottom of the conical hopper, a polygonal through hole matching the polygonal shaft is opened in the middle of the movable sleeve, and the movable sleeve is slidably mounted on the polygonal shaft through the polygonal through hole, and a vertical spiral blade is also fixed to the bottom of the polygonal shaft.

[0015] Further improvements based on the above technical solution are: multiple lifting screws are rotatably installed on the four sides of the upper mounting plate and the inner wall of the barrel, and each lifting screw is threaded through the four outer convex edges on the top of the lifting cone bucket, and the tops of each lifting screw are connected to each other through a transmission chain, and a lifting motor and a rotating motor for driving the lifting screws and the polygonal shaft to rotate are installed on the upper side of the upper mounting plate.

[0016] Further improvements based on the above technical solution are as follows: the first dispersion filter plate includes an integrally arranged first outer ring and a hollow sleeve ring, the hollow sleeve ring and the first outer ring are fixedly provided with a first filter screen inside, the hollow sleeve ring is fixedly sleeved on the shaft of the spiral conveying rod, and the outer side of the first outer ring is in rotational contact with the inside of the hot melt conveying pipe, and the first filter screen of each of the first dispersion filter plates gradually decreases in diameter from the head end to the tail end of the spiral conveying rod;

[0017] The second dispersion filter plate includes a second outer ring and a second filter screen installed in the middle of the second outer ring. One side of the second outer ring is locked to the end of the hot melt delivery pipe by screws. The mesh diameter of the second filter screen is smaller than the mesh diameter of the first filter screen. The vacuum tube connected to one side of the hot melt delivery pipe is respectively installed with a vacuum valve and a gas-liquid separation membrane.

[0018] A method for using a sheet extrusion device comprises the following construction steps:

[0019] S1. Feeding, crushing and conveying: Each layer of material is fed into the crushing hopper assembly of each thermoplastic extruder for mixing and crushing, so that the crushed materials of corresponding size can quickly enter the hot melt conveying pipe from the bottom, and are quickly spirally conveyed to the front end under the action of the spiral conveying rod inside the hot melt conveying pipe;

[0020] S2. Constant temperature hot melt process: When the hot melt conveying pipe is conveying the scraps, the heating fans installed at the bottom of the outer air duct blow the heat seal into the hot air pipe cavity and discharge it from the air outlet to avoid overheating. During this period, the hot air is evenly distributed on the surface of the hot melt conveying pipe for uniform heating, so that the scraps conveyed by the hot melt conveying pipe can be hot melted and conveyed forward;

[0021] S3. Segmented filtering and hot melting: In this hot melting process, the first dispersion filter plates and the second dispersion filter plates arranged on the spiral conveying rod filter the scraps multiple times, so the spiral conveying rod squeezes and conveys the scraps and presses them against the first dispersion filter plate. The molten material can pass through the first dispersion filter plate, while the oversized scraps are left to continue hot melting. Since the surface of the first dispersion filter plate can contact the inner side of the hot melt conveying pipe, the heat can be quickly transferred to the first dispersion filter plate to generate high temperature, and the coarser scraps filtered out are hot melted, while other impurities that cannot be hot melted by high temperature are filtered out;

[0022] S4. Air pressure eliminates bubbles: When the hot melt conveying tube is hot melt conveying, the hot melt conveying tube is evacuated through a vacuum pump and a vacuum tube to remove bubbles in the hot melt material, increase the density, and at the same time increase the heat inside the hot melt conveying tube to melt the material;

[0023] S5. Material metering and conveying process: The hot-melted material enters the transition conveying pipe from the hot-melt conveying pipe, is metered by the metering pump in the middle of the transition conveying pipe, and is conveyed to the feed end of the board discharge composite head;

[0024] S6. Composite plate pressure forming process: the feed end of the plate discharge composite machine head is connected to the four material ports of the connecting pipe respectively. After continuous extrusion, the hot-melt materials in the four material ports enter the conical pressure ports respectively. The hot-melt materials are pressurized into the horizontal plate cavity through the conical pressure ports, so that the thermoplastic material in the horizontal plate cavity is relatively dense, and is transported to the plate discharge slot in layers through the horizontal plate cavities distributed in the upper and lower layers. The hot-melt materials of each layer will be squeezed and bonded to each other when being transported in the plate discharge slot, and the layers of thermoplastics in the horizontal plate cavity will be cooled and formed under the action of the cooler, and finally the thermoplastic composite plate is formed and output from the end of the plate discharge slot and transported to the next production and processing step.

[0025] By adopting the above technical solution, the present invention has the following advantages:

[0026] The present invention ensures that materials from different thermoplastic extruders can be layered and pressurized through four conical pressurized ports through the design of the plate-discharging composite die head and the coordinated work of four thermoplastic extruders matched therewith, thereby realizing synchronous and precise compounding of multiple layers of materials in the plate-discharging groove, ensuring close bonding between layers, and improving the structural stability of the composite plate. The horizontal plate cavity and the plate-discharging groove are horizontally connected to ensure a smooth transition of the composite material during the extrusion molding process, avoiding the common extrusion instability or fault problems in traditional equipment. Combined with the use of a cooler, the composite plate can be quickly cooled and molded after extrusion, which not only improves production efficiency, but also ensures the accuracy of the plate size and surface quality.

[0027] The plate-discharging composite machine head consists of a front material discharging table and a rear connecting block which are locked together. During assembly, the connecting pipe can be inserted into the slot to connect with the conical pressurizing port, thereby improving the connection stability and the tightness between the material port and the conical pressurizing port. The plate-discharging composite machine head is installed on a movable mounting frame through a guide tube and a rotating screw, so that the height of the entire plate-discharging composite machine head can be adjusted and adjusted, which not only ensures the stability of the structure, but also facilitates the disassembly and maintenance of the machine head. At the same time, an L-shaped baffle that can open and close the plate-discharging slot is provided on the front side of the plate-discharging composite machine head, thereby preventing unplanned material overflow. Even if an emergency occurs during operation, it can be quickly closed, thereby avoiding damage to production equipment and waste of raw materials, thereby improving the overall production safety and efficiency.

[0028] The material barrel of the crushed material feeding hopper assembly of the present invention is provided with a lifting cone bucket which can be lifted and slid and is used to hold hot-melt materials. A mixing and crushing assembly is rotatably arranged in the lifting cone bucket, which can efficiently disperse and crush the materials at the bottom multiple times, thereby reducing the particle size of the materials and improving the hot-melt efficiency in the later stage. In addition, the bottom of the lifting cone bucket can contact the inner wall of the conical hopper, and the distance between the spacing channels can be adjusted by controlling the lifting height of the lifting cone bucket, so that the materials meeting the set particle size after being crushed by the mixing and crushing assembly can fall into the preset spacing channel from the side opening, and preferentially fall into the hot-melt conveying pipe for transportation, while the materials exceeding the particle size are continuously mixed and stirred until they are all crushed and fall, or the lifting cone bucket is lifted upward to expand the spacing channel between the bottom surface and the inner side of the conical hopper, so that all the materials can fall quickly. At the same time, the lifting cone bucket can also reciprocate up and down in the process, which helps the bottom surface of the lifting cone bucket to push and compact the materials falling into the conical hopper, thereby improving the material discharge speed.

[0029] The mixing and crushing assembly is composed of a plurality of crushing blades installed on a movable sleeve, the size of which gradually decreases from top to bottom, and is well adapted to the inner side of the conical hopper, so as to quickly and synchronously crush the materials in the conical hopper, and crushing and dispersing blades are respectively provided on the crushing blades, which can be used to increase the stirring speed of the materials and separate the materials on the crushing blades to four sides, so as to be better crushed by the crushing blades, thereby greatly improving the overall crushing efficiency;

[0030] Furthermore, the polygonal shaft can drive the movable sleeve to rotate to realize the rotation and dispersion of multiple crushing blades and crushing and dispersing blades, and when the conical hopper is driven to move upward by the lifting screw, the movable sleeve can be synchronously lifted up along the polygonal shaft, which can ensure that the mixing and crushing components can continuously maintain the linkage effect of rotation and dispersion during the upward movement of the conical hopper. At the same time, when the polygonal shaft rotates, it can also drive the vertical spiral blades to rotate and quickly feed downward, and cooperate with the conical hopper to push downward to achieve a compaction effect, thereby greatly improving the material discharge efficiency.

[0031] The present invention provides an outer air duct on the outer sleeve of the hot melt conveying pipe to form a hot air pipe cavity, and the synchronous operation of multiple heating fans generates uniform hot air, through which the hot air can evenly conduct heat to the hot melt conveying pipe, so that the hot melt conveying pipe can evenly heat the materials conveyed inside. At the same time, during the conveying process of the spiral conveying rod, due to the arrangement of the first dispersion filter plate and the second dispersion filter plate, materials at different stages can be filtered, and the first dispersion filter plate and the second dispersion filter plate are both in contact with the hot melt conveying pipe, so that heat can be quickly conducted to the first dispersion filter plate and the second dispersion filter plate to generate high temperature, and the coarser crushed materials filtered out can be hot-melted, while other impurities that cannot be hot-melted by high temperature will be filtered out, thereby improving the hot-melting effect and quality of the materials.

[0032] In the process of hot-melt conveying materials, the hot-melt conveying tube is evacuated by using a vacuum pump and a vacuum tube to eliminate bubbles and moisture in the material inside the hot-melt conveying tube, which is conducive to generating more stable heat in the hot-melt conveying tube. This can improve the density of the hot-melt material and ensure the quality of the final product through extrusion molding by the plate-discharging composite head. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings:

[0034] Figure 1 It is a structural schematic diagram of the present invention;

[0035] Figure 2 It is a structural schematic diagram of the board discharging composite machine head and the movable mounting frame of the present invention;

[0036] Figure 3For the present invention Figure 2 Another perspective structural diagram of;

[0037] Figure 4 It is a structural schematic diagram of the plate discharging composite die head of the present invention;

[0038] Figure 5 It is a side structural schematic diagram of the front material discharging platform of the present invention;

[0039] Figure 6 This is a schematic diagram of the internal top view structure of the front material discharging platform of the present invention;

[0040] Figure 7 It is a schematic structural diagram of the thermoplastic extruder of the present invention;

[0041] Figure 8 It is a schematic diagram of the structure of the crushed material feed hopper assembly, the hot melt conveying pipe and the external air duct of the present invention;

[0042] Fig. 9 It is a structural schematic diagram of the lifting cone bucket and the mixing and crushing assembly of the present invention;

[0043] Fig.10 It is a schematic diagram of the structure of the mixing and crushing assembly of the present invention;

[0044] Fig.11 It is a schematic diagram of the structure of the hot melt conveying pipe and the second dispersion filter plate of the present invention;

[0045] Fig.12 It is a schematic diagram of the structure of the spiral conveying rod and the first dispersion filter plate of the present invention;

[0046] Fig.13 It is a schematic structural diagram of the first dispersion filter plate of the present invention;

[0047] Fig.14 It is a structural schematic diagram of the air outlet of the present invention;

[0048] Fig.15 It is a schematic diagram of the structure of the vacuum tube and the hot-melt conveying tube of the present invention;

[0049] In the figure: thermoplastic extruder 10, crushed material feed hopper assembly 11, barrel 110, conical hopper 111, upper mounting plate 112, lifting cone hopper 113, inner inclined surface 1131, side opening 1132, hollow cross 1133, lifting screw 114, lifting motor 115, polygonal shaft 116, rotating motor 117, mixing and crushing assembly 118, movable sleeve 1181, crushing blade 1182, crushing and dispersing blade 1183, polygonal through hole 1184, vertical spiral blade 119, hot melt conveying pipe 12, spiral conveying rod 121, first dispersing filter plate 122, first outer ring 1221, hollow sleeve 1222, first filter screen 1223, vacuum Tube 123, vacuum valve 124, gas-liquid separation membrane 125, external air duct 13, hot air duct cavity 131, air inlet 132, air outlet 133, second dispersion filter plate 134, second outer ring 1341, second filter screen 1342, heating fan 14, transition conveying pipe 15, metering pump 16, vacuum pump 17, drive motor head 18, plate discharging composite head 20, front material discharging platform 21, slot 211, conical pressurizing port 212, horizontal plate cavity 213, rear connecting block 22, connecting pipe 221, material port 222, feed end 23, plate discharging slot 24, cooler 25, movable mounting frame 30, guide tube 40, rotating screw 41, L-shaped baffle 50, telescopic push rod 51. DETAILED DESCRIPTION

[0050] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0051] like Figure 1-11As shown in the figure, the present invention provides a technical solution for a sheet extrusion device, the sheet extrusion device comprises a plate discharging compound head 20, four feed ends 23 arranged on one side of the plate discharging compound head 20, and four thermoplastic extruders 10 connected to the four feed ends 23 of the plate discharging compound head 20, the hot melt material is extruded into the plate discharging compound head 20 through the four thermoplastic extruders 10, and the plate discharging compound head 20 comprises a front material discharging table 21 and a rear connecting block 22 which are mutually locked and connected by bolts, so as to facilitate the subsequent rapid disassembly and maintenance, and each feed end 23 is arranged on the rear side of the rear connecting block 22, a plate discharging groove 24 is provided at the front end of the front material discharging table 21, and a plurality of mutually connected conical pressurizing ports 212 and horizontal plate cavities 21 are provided on the inner side of the front material discharging table 21. 3, wherein the conical pressurizing port 212 is communicated with the feed end 23 respectively, and the horizontal plate cavity 213 is communicated and arranged on one side of the plate outlet groove 24, so that each layer of hot-melt material can be smoothly transitioned during the extrusion molding process, avoiding the extrusion instability or fault common in traditional equipment, and a connecting pipe 221 is installed on the front side of the rear connecting block 22, and four feed ports 222 are opened on the inner side of the connecting pipe 221, and are respectively communicated with each feed end 23, so that the hot-melt materials extruded by the four thermoplastic extruders 10 can enter the four feed ports 222 respectively, and in actual production, the material in the middle of the four feed ports 222 can be hot-melted with recycled waste, and the top and bottom layers are hot-melted with conventional materials to clamp the middle recycled material layer, so as to reduce material waste.

[0052] The end of the connecting tube 221 is protrudingly arranged on the front side of the rear connecting block 22, and a slot 211 is provided on the rear side of the front material discharge platform 21, and the protruding part of the connecting tube 221 is adapted to be embedded and installed by the slot 211, which can improve the stability of the connection between them, and the slot 211 is located on one side of the conical pressurizing port 212, and each material port 222 on the inner side of the connecting tube 221 is respectively connected to one side of each conical pressurizing port 212, thereby improving the tightness of the connection between each material port 222 and the conical pressurizing port 212, so that the hot-melt materials of the four material ports 222 enter through the conical pressurizing port 212 and are pressurized and transferred to the horizontal plate cavity 213, and then are layeredly squeezed into the plate discharge slot 24 for composite molding by the four horizontal plate cavities 213 distributed up and down. In addition, a cooler 25 is installed on the upper side of the front material discharge platform 21, and the cooler 25 is adjacent to the upper side of the plate discharge slot 24. The composite plate can be quickly cooled and formed after extrusion, thereby improving production efficiency and quality.

[0053] Among them, a movable mounting frame 30 is arranged at the bottom of the plate discharging compound head 20, and a guide tube 40 and a rotating screw 41 are vertically penetrated on the upper side of the movable mounting frame 30, and the top ends of the guide tube 40 and the rotating screw 41 are connected to the bottom of the plate discharging compound head 20, and the rotating screw 41 is threadedly connected to the movable mounting frame 30. A hand wheel is installed at the bottom end of the rotating screw 41, so that the rotating screw 41 is driven to rotate by the hand wheel to adjust the height position of the plate discharging compound head 20 so as to better correspond to the transition conveying pipes 15 of the four thermoplastic extruders 10 for connection.

[0054] In addition, an L-shaped baffle 50 is rotatably connected to the bottom front side of the front material discharging platform 21, and the L-shaped baffle 50 is movably located at the front side of the plate discharging slot 24. A telescopic push rod 51 is hinged at the bottom of the front material discharging platform 21 for controlling the flipping movement of the L-shaped baffle 50. Through the extension and retraction of the telescopic push rod 51, the L-shaped baffle 50 can be rotated upward to tightly close the plate discharging slot 24, or rotated downward to open the plate discharging slot 24 to discharge the material and feed the plate. This can prevent unplanned material overflow, and even if an emergency occurs during operation, it can be quickly closed to avoid damage to production equipment and waste of raw materials.

[0055] In the present embodiment, specifically, the thermoplastic extruder 10 includes a crushed material feed hopper assembly 11 and a hot melt conveying pipe 12 connected to the bottom of the crushed material feed hopper assembly 11, the end of the hot melt conveying pipe 12 is connected to a transition conveying pipe 15, and is connected to a feed end 23 through the transition conveying pipe 15, a metering pump 16 is installed in the middle of the transition conveying pipe 15, the connection structure from the crushed material feed hopper assembly 11 to the hot melt conveying pipe 12 and then to the feed end 23, plus the metering pump 16 in the transition conveying pipe 15, can achieve stable transportation and accurate metering of materials, a spiral conveying rod 121 is rotatably arranged inside the hot melt conveying pipe 12, and a driving motor head 18 for driving the spiral conveying rod 121 to rotate is installed on one side of the thermoplastic extruder 10, wherein an outer air duct 13 is sleeved on the outer side of the middle part of the hot melt conveying pipe 12, and a closed hot air duct cavity 131 is formed between them, and a plurality of air inlets 132 connected to the hot air duct cavity 131 are opened at the bottom of the outer air duct 13, and each air inlet 132 has a bottom. A heating fan 14 is installed in each part for uniformly heating the hot melt conveying pipe 12 body, which is helpful for hot melt processing of materials. An air outlet 133 connected to the hot air pipe cavity 131 is opened on one side of the middle of the outer air duct 13, and a vacuum tube 123 is interspersed in the air outlet 133. One end of the vacuum tube 123 is externally connected to a vacuum pump 17, and the other end is connected to the inside of the hot melt conveying pipe 12. Vacuuming the hot melt conveying pipe 12 is beneficial to remove air from the hot melt material and improve the processing quality of the material. The vacuum tube 123 connected to one side of the hot melt conveying pipe 12 is respectively installed with a vacuum valve 124 and a gas-liquid separation membrane 125. The vacuum valve 124 opens and closes the vacuum tube 123 according to the use requirements, and the vacuum valve 124 can use equipment with a filter to prevent the hot melt material from being sucked away, and the gas-liquid separation membrane 125 further separates gas and liquid. The gas-liquid separation membrane 125 is mainly a breathable material, a microporous membrane, a perforated isolation membrane, etc. that can separate gas and liquid in the prior art.

[0056] The crushed material feeding hopper assembly 11 comprises a barrel 110, a conical hopper 111 is integrally arranged at the bottom of the barrel 110, a lifting cone hopper 113 is slidably arranged inside the barrel 110, the outer bottom surface of the lifting cone hopper 113 is adapted to fit the inner surface of the conical hopper 111, side openings 1132 are respectively provided on the four sides of the bottom of the lifting cone hopper 113, and an inner inclined surface 1131 inclined inwardly is provided on the top opening flange of the lifting cone hopper 113, so that the material falling on the inclined surface can slide to the middle of the lifting cone hopper 113, thereby avoiding the accumulation and waste of materials. A hollow cross 1133 is fixed in the middle of the inner side of 113, and a mixing and crushing assembly 118 is rotatably installed in the middle of the hollow cross 1133, and is located at the inner bottom of the conical hopper 111. The side openings 1132 are distributed on the four sides of the mixing and crushing assembly 118. When the material enters the barrel 110 and falls on the inner inclined surface 1131 of the lifting cone hopper 113, the material slides to the middle of the lifting cone hopper 113, and then enters the area around the mixing and crushing assembly 118 through the side openings 1132. The mixing and crushing assembly 118 rotates on the hollow cross 1133 to The mixing and crushing assembly 118 is located at the bottom of the inner side of the conical hopper 111 and is surrounded by the side opening 1132, so that the materials entering from the side opening 1132 can be effectively mixed and crushed, thereby improving the uniformity and efficiency of the material mixing and crushing. The lifting cone hopper 113 can slide up and down, and the opening and closing degree of the side opening 1132 and the distance between the lifting cone hopper 113 and the conical hopper 111 can be adjusted by changing the position of the lifting cone hopper 113, so that the materials meeting the set particle size after being crushed by the mixing and crushing assembly 118 can be The materials can fall into the preset spacing channel from the side opening 1132, and are preferentially transported into the hot melt conveying pipe 12, while the materials exceeding the particle size are continuously mixed and stirred until they are all crushed and fall down; or the lifting cone hopper 113 is raised upward to expand the spacing channel between the bottom surface and the inner side of the conical hopper 111, so that all the materials can fall down quickly. At the same time, the lifting cone hopper 113 can also reciprocate up and down during this process, which helps the bottom surface of the lifting cone hopper 113 to push and compact the materials falling into the conical hopper 111, thereby increasing the material discharge speed and adapting to different production needs.

[0057] In the above technical solution, the mixing and crushing assembly 118 includes a movable sleeve 1181 rotatably mounted in the middle of the hollow cross 1133, and five crushing blades 1182 and crushing and dispersing blades 1183 of suitable sizes are installed on the movable sleeve 1181, and each crushing and dispersing blade 1183 of corresponding size is respectively located on the upper side of each crushing blade 1182, and the sizes of the five crushing and dispersing blades 1183 and the crushing blades 1182 decrease step by step from top to bottom, and the outer blade edge of the crushing blade 1182 on the lower side is closer to the inner wall of the lifting cone bucket 113. When the movable sleeve 1181 rotates, the powder is driven The crushing blade 1182 and the crushing and dispersing blade 1183 rotate together, and the material falls from above and first contacts the larger crushing and dispersing blade 1183 above for preliminary mixing and dispersion to the four sides, which helps to prevent material agglomeration and improve the mixing uniformity of the material, so that the material is divided and crushed by the teeth on the outer edge of the crushing blade 1182, and then passes through the gradually smaller crushing and dispersing blade 1183 and the crushing blade 1182 below for further crushing and dispersion operations. In this way, the material can undergo a progressive crushing process, from preliminary dispersion to gradually refined crushing, thereby improving the crushing effect.

[0058] In addition, in order to realize the rotational crushing of the mixing and crushing assembly 118 in the above technical solution, an upper mounting plate 112 is fixedly provided at intervals on the upper side of the barrel 110, and a polygonal shaft rod 116 is rotatably installed in the middle of the upper mounting plate 112. The polygonal shaft rod 116 passes through the bottom of the lifting cone bucket 113 and extends to the inner side of the bottom of the conical hopper 111, and a movable space is provided at the bottom of the lifting cone bucket 113 for completely rotating the polygonal shaft rod 116 to avoid synchronously driving the lifting cone bucket 113 with the rotation of the polygonal shaft rod 116. A polygonal through hole 1181 adapted to the polygonal shaft rod 116 is provided in the middle of the movable sleeve 1181. 84, and the movable sleeve 1181 is slidably sleeved on the polygonal shaft 116 up and down through the polygonal through hole 1184, and a vertical spiral blade 119 is fixedly provided at the bottom of the polygonal shaft 116. The polygonal shaft 116 drives the movable sleeve 1181 to rotate to realize the rotation of the entire mixing and crushing assembly 118, and the mixing and crushing assembly 118 can also slide up and down along the polygonal shaft 116 as the lifting cone bucket 113 is lifted and lowered, ensuring that the mixing and crushing assembly 118 has a rotating, dispersing and crushing effect synchronously during the lifting and sliding adjustment, and the vertical spiral blade 119 can speed up the material feeding and conveying speed.

[0059] In order to achieve the lifting and lowering adjustment of the lifting cone bucket 113, four lifting screws 114 are rotatably installed on the four sides of the upper mounting plate 112 and the inner wall of the barrel 110, and each lifting screw 114 is threaded through the four outer convex edges on the top of the lifting cone bucket 113, and the tops of each lifting screw 114 are interconnected through a transmission chain. A lifting motor 115 and a rotating motor 117 for driving the lifting screw 114 and the polygonal shaft 116 to rotate are installed on the upper side of the upper mounting plate 112. This arrangement can utilize the lifting screws 114 on the four sides to synchronously thread the lifting cone bucket 113 to lift and lower, thereby greatly improving the stability and accuracy during lifting.

[0060] In this embodiment, the spiral conveying rod 121 is fixedly provided with four first dispersion filter plates 122, so that when the spiral conveying rod 121 rotates, the first dispersion filter plates 122 can stably play a filtering role in the hot melt conveying pipe 12, which can not only filter some unmelted solid impurities, but also temporarily filter relatively coarse hot melt materials until they are hot-melted to a corresponding size or completely melted, so as to ensure the purity and melting degree of the hot melt materials; and the outer side of each first dispersion filter plate 122 is against the inner wall of the hot melt conveying pipe 12, and the first dispersion filter plate 122 includes a first outer ring 1221 and a hollow sleeve ring 1222 which are integrally arranged, and the inner sides of the hollow sleeve ring 1222 and the first outer ring 1221 are fixedly provided with a first filter screen 1223 The hollow sleeve 1222 is fixedly mounted on the shaft of the spiral conveying rod 121, and the outer side of the first outer ring 1221 is in rotational contact with the inside of the hot melt conveying tube 12, so that the heat of the first outer ring 1221 can be conducted to the first filter screen 1223, so that the first filter screen 1223 can also generate high temperature. When the spiral conveying rod 121 pushes the material to the first filter screen 1223 for filtration, the filtered hot melt material can be further dispersed and melted, thereby improving the hot melt efficiency. Moreover, the mesh diameter of the first filter screen 1223 of each first dispersion filter plate 122 from the head end to the tail end of the spiral conveying rod 121 gradually decreases, so that when the material passes through each first filter screen 1223, impurities and materials of different sizes can be gradually filtered out, thereby realizing graded filtration of the material.

[0061] Similarly, a second dispersion filter plate 134 is installed at the end of the hot melt conveying pipe 12, which is the last filter plate. The second dispersion filter plate 134 includes a second outer ring 1341 and a second filter screen 1342 installed in the middle of the second outer ring 1341. The mesh diameter of the second filter screen 1342 is smaller than that of the first filter screen 1223 to ensure that the material is finally completely melted before it can pass through. One side of the second outer ring 1341 is screwed to the end of the hot melt conveying pipe 12, and it also has a certain amount of heat, so it can also hot-melt the material during filtering until the hot-melt material enters the transition conveying pipe 15 and waits for extrusion.

[0062] A method for using a sheet extrusion device comprises the following construction steps:

[0063] S1. Feeding, crushing and conveying: each layer of material is fed into the crushing hopper assembly 11 of each thermoplastic extruder 10, and the material enters the lifting cone bucket 113 inside the barrel 110. Then, the polygonal shaft 116 is driven by the rotating motor 117, and the polygonal shaft 116 drives the movable sleeve 1181 of the mixing and crushing assembly 118 to rotate, so that each crushing blade 1182 and the crushing and dispersing blade 1183 rotate to disperse and crush the material inside the lifting cone bucket 113, wherein the crushing and dispersing blade 1183 can continuously disperse the material outward, so as to better allow the crushing blade 1182 to crush and fall, avoid accumulation on the upper side of the crushing blade 1182, and improve the overall crushing efficiency;

[0064] At this time, the spacing channel between the bottom surface of the lifting cone bucket 113 and the inner side of the conical hopper 111 can be adjusted according to the use requirements, so that the particle size of the material can be crushed to be smaller than the spacing and can slide down. During adjustment, one of the lifting screws 114 is driven to rotate by the lifting motor 115, and the lifting screw 114 drives the other three lifting screws 114 to rotate through the transmission chain, so that the lifting cone bucket 113 can be accurately and stably displaced up and down under the threaded transmission of the four lifting screws 114, and the mixing and crushing assembly 118 rotatably installed on the hollow cross 1133 in the middle of the lifting cone bucket 113 can be lifted and lowered synchronously, and it is mainly lifted and lowered on the polygonal shaft 116 through the polygonal through hole 1184 of the movable sleeve 1181. In this way, while adjusting the spacing between the lifting cone bucket 113 and the conical hopper 111 up and down, the mixing and crushing assembly 118 can also be kept in the cone The material is dispersed and crushed by rotating in the conical hopper 111, so that the material that meets the set particle size after being crushed by the mixing and crushing assembly 118 can fall into the preset spacing channel from the side opening 1132, and preferentially fall into the hot melt conveying pipe 12 for conveying, while the material exceeding the particle size is continuously mixed and stirred until all of it is crushed and falls, or the lifting cone hopper 113 is lifted upward to expand the spacing channel between the bottom surface and the inner side of the conical hopper 111, so that all the material can fall quickly. At the same time, the lifting cone hopper 113 can also reciprocate up and down during this process, which helps the bottom surface of the lifting cone hopper 113 to push and compact the material falling into the conical hopper 111, and pressurize it to the vertical spiral blade 119 below, thereby increasing the speed of material discharge into the hot melt conveying pipe 12, and quickly spirally conveying it to the front end under the action of the spiral conveying rod 121 inside the hot melt conveying pipe 12;

[0065] S2. Constant temperature hot melt process: When the hot melt conveying pipe 12 conveys the scraps, each heating fan 14 installed at the bottom of the outer air duct 13 blows the heat seal into the hot air pipe cavity 131 and discharges it from the air outlet 133 to avoid overheating. During this period, the hot air is evenly distributed on the surface of the hot melt conveying pipe 12 for uniform heating, so that the scraps conveyed by the hot melt conveying pipe 12 can be hot melted and conveyed forward;

[0066] S3. Segmented filtering and hot melting: In this hot melting process, the first dispersion filter plates 122 and the second dispersion filter plates 134 arranged on the spiral conveying rod 121 filter the scraps for multiple times, so the spiral conveying rod 121 squeezes and conveys the scraps to press against the first dispersion filter plate 122, and the molten material can pass through the first dispersion filter plate 122, while the oversized scraps are left to continue hot melting. Since the surface of the first dispersion filter plate 122 can contact the inner side of the hot melt conveying pipe 12, the heat can be quickly transferred to the first dispersion filter plate 122 to generate high temperature, and the coarser scraps filtered out are hot melted, while other impurities that cannot be hot melted by high temperature will be filtered out;

[0067] S4. Air pressure eliminates bubbles: When the hot melt delivery tube 12 is hot melt delivery, the hot melt delivery tube 12 is evacuated through the vacuum pump 17 and the vacuum tube 123 to remove bubbles in the hot melt material, increase the density, and at the same time increase the internal heat of the hot melt delivery tube 12 to melt the material;

[0068] S5. Material metering and conveying process: The hot melt material enters the transition conveying pipe 15 from the hot melt conveying pipe 12, is metered by the metering pump 16 in the middle of the transition conveying pipe 15, and is conveyed to the feed end 23 of the composite die 20 out of the plate;

[0069] S6. Composite plate pressure forming process: the feed end 23 of the plate discharge composite machine head 20 is connected to the four material ports 222 of the connecting pipe 221 respectively. After continuous extrusion, the hot-melt materials in the four material ports 222 respectively enter the conical pressurizing port 212, and the hot-melt materials are pressurized into the horizontal plate cavity 213 through the conical pressurizing port 212, so that the thermoplastic material in the horizontal plate cavity 213 is relatively dense, and is transported to the plate discharge slot 24 in layers through the horizontal plate cavities 213 distributed in the upper and lower layers. The layers of hot-melt materials are squeezed and bonded to each other when being transported in the plate discharge slot 24, and the layers of thermoplastics in the horizontal plate cavity 213 are cooled and formed under the action of the cooler 25, and finally the thermoplastic composite plate is formed and output from the end of the plate discharge slot 24 and transported to the next production and processing step.

[0070] The above embodiments show and describe the basic principles and main features of the invention and the advantages of the invention. Those skilled in the art should understand that the invention is not limited to the above embodiments. The above embodiments and descriptions are only for illustrating the principles of the invention. Without departing from the spirit and scope of the invention, the invention may have various changes and improvements, which shall fall within the scope of the invention to be protected. The scope of protection of the invention shall be defined by the attached claims and their equivalents.

Claims

1. Sheet extrusion equipment, characterized in that: include: A plate-discharging compound die head (20), a plurality of feed ends (23) disposed on one side of the plate-discharging compound die head (20), and a plurality of thermoplastic extruders (10) connected to the respective feed ends (23) of the plate-discharging compound die head (20); The plate discharging composite machine head (20) comprises a front material discharging platform (21) and a rear connecting block (22) which are locked and connected to each other, each of the feed ends (23) is arranged on the rear side of the rear connecting block (22), a plate discharging slot (24) is provided at the front end of the front material discharging platform (21), a plurality of mutually connected conical pressurizing ports (212) and horizontal plate cavities (213) are provided on the inner side of the front material discharging platform (21), wherein the conical pressurizing ports (212) are respectively connected to the feed ends (23), and the horizontal plate cavities (213) are connected and arranged on one side of the plate discharging slot (24), and a cooler (25) is installed on the upper side of the front material discharging platform (21), and the cooler (25) is adjacent to the upper side of the plate discharging slot (24); The thermoplastic extruder (10) comprises a crushed material feed hopper assembly (11) and a hot melt conveying pipe (12) connected to the bottom of the crushed material feed hopper assembly (11); the end of the hot melt conveying pipe (12) is connected to a transition conveying pipe (15) and is connected to a feed end (23) via the transition conveying pipe (15); a metering pump (16) is installed in the middle of the transition conveying pipe (15); a screw conveying rod (121) is rotatably arranged inside the hot melt conveying pipe (12); and a driving motor head (18) for driving the screw conveying rod (121) to rotate is installed on one side of the thermoplastic extruder (10); The spiral conveying rod (121) is fixedly provided with a plurality of first dispersion filter plates (122), and the outer side of each first dispersion filter plate (122) abuts against the inner wall of the hot melt conveying tube (12), and a second dispersion filter plate (134) is installed at the end of the hot melt conveying tube (12); An outer air duct (13) is sleeved on the outer side of the middle of the hot melt conveying pipe (12), and a closed hot air pipe cavity (131) is formed between the outer air duct (13), a plurality of air inlets (132) connected to the hot air pipe cavity (131) are provided at the bottom of the outer air duct (13), and a heating fan (14) is installed at the bottom of each air inlet (132) for uniformly heating the hot melt conveying pipe (12) body, an air outlet (133) connected to the hot air pipe cavity (131) is provided on one side of the middle of the outer air duct (13), and a vacuum tube (123) is inserted through the air outlet (133), one end of the vacuum tube (123) is externally connected to a vacuum pump (17), and the other end is connected to the inside of the hot melt conveying pipe (12), so as to perform a vacuum treatment on the inside of the hot melt conveying pipe (12); The crushed material feeding hopper assembly (11) comprises a barrel (110), the bottom of which is integrally provided with a conical hopper (111), a lifting cone hopper (113) is slidably provided on the inner side of the barrel (110) up and down, the outer bottom surface of the lifting cone hopper (113) is adapted to fit with the inner side surface of the conical hopper (111), four sides of the bottom of the lifting cone hopper (113) are respectively provided with side openings (1132), the top opening flange of the lifting cone hopper (113) is provided with an inner inclined surface (1131) inclined inwardly, a hollow cross (1133) is fixedly provided at the middle of the inner side of the lifting cone hopper (113), a mixing and crushing assembly (118) is rotatably installed at the middle of the hollow cross (1133) and is located at the inner bottom of the conical hopper (111), and the side openings (1132) are distributed on the four sides of the mixing and crushing assembly (118); The mixing and crushing assembly (118) comprises a movable sleeve (1181) rotatably mounted in the middle of the hollow cross (1133), and a plurality of crushing blades (1182) and crushing and dispersing blades (1183) of suitable sizes are mounted on the movable sleeve (1181), and each crushing and dispersing blade (1183) is located on the upper side of the crushing blade (1182), and the sizes of each crushing and dispersing blade (1183) and crushing blade (1182) decrease step by step from top to bottom; An upper mounting plate (112) is fixedly provided at a spacing on the upper side of the barrel (110), and a polygonal shaft (116) is rotatably mounted in the middle of the upper mounting plate (112). The polygonal shaft (116) passes through the bottom of the lifting cone bucket (113) and extends to the inner side of the bottom of the conical hopper (111). A polygonal through hole (1184) adapted to the polygonal shaft (116) is provided in the middle of the movable sleeve (1181), and the movable sleeve (1181) is slidably sleeved on the polygonal shaft (116) up and down through the polygonal through hole (1184). A vertical spiral blade (119) is also fixedly provided at the bottom of the polygonal shaft (116).

2. The sheet extrusion equipment according to claim 1, characterized in that: A connecting pipe (221) is installed on the front side of the rear connecting block (22), and a plurality of material ports (222) are provided inside the connecting pipe (221) and are respectively connected to the respective feeding ends (23). The end of the connecting pipe (221) is protrudingly arranged on the front side of the rear connecting block (22). A slot (211) is provided on the rear side of the front material discharging platform (21), and the protruding portion of the connecting pipe (221) is adapted to be embedded in the slot (211). The slot (211) is located on one side of the conical pressurizing port (212), and the material ports (222) inside the connecting pipe (221) are respectively connected to one side of the conical pressurizing port (212).

3. The sheet extrusion equipment according to claim 2, characterized in that: The front bottom of the front material discharging platform (21) is rotatably connected to an L-shaped baffle (50), the L-shaped baffle (50) being movably located at the front side of the plate discharging slot (24), and the bottom of the front material discharging platform (21) is hingedly connected to a telescopic push rod (51) for controlling the flipping movement of the L-shaped baffle (50).

4. The sheet extrusion equipment according to claim 1, characterized in that: A movable mounting frame (30) is arranged at the bottom of the plate-discharging composite machine head (20), a guide tube (40) and a rotating screw rod (41) are vertically penetrated through the upper side of the movable mounting frame (30), and the top ends of the guide tube (40) and the rotating screw rod (41) are connected to the bottom of the plate-discharging composite machine head (20), and a hand wheel is arranged at the bottom end of the rotating screw rod (41).

5. The sheet extrusion equipment according to claim 1, characterized in that: A plurality of lifting screws (114) are rotatably mounted on the four sides of the inner wall of the upper mounting plate (112) and the barrel (110), and each lifting screw (114) is threadedly penetrated through the four outer convex edges on the top of the lifting cone bucket (113). The tops of the lifting screws (114) are interconnected via a transmission chain. A lifting motor (115) and a rotating motor (117) for driving the lifting screws (114) and the polygonal shaft (116) to rotate are mounted on the upper side of the upper mounting plate (112).

6. The sheet extrusion equipment according to claim 1, characterized in that: The first dispersion filter plate (122) comprises an integrally arranged first outer ring (1221) and a hollow sleeve ring (1222); a first filter screen (1223) is fixedly arranged inside the hollow sleeve ring (1222) and the first outer ring (1221); the hollow sleeve ring (1222) is fixedly sleeved on the shaft of the spiral conveying rod (121); the outer side of the first outer ring (1221) is in rotational contact with the inside of the hot melt conveying pipe (12); and the mesh diameter of the first filter screen (1223) of each of the first dispersion filter plates (122) gradually decreases from the head end to the tail end of the spiral conveying rod (121); The second dispersion filter plate (134) comprises a second outer ring (1341) and a second filter screen (1342) which is integrally mounted in the middle of the second outer ring (1341); one side of the second outer ring (1341) is screwed to the end of the hot melt conveying pipe (12); the mesh diameter of the second filter screen (1342) is smaller than the mesh diameter of the first filter screen (1223); The vacuum tube (123) connected to one side of the hot melt conveying tube (12) is respectively installed with a vacuum valve (124) and a gas-liquid separation membrane (125).

7. The method for using the sheet extrusion equipment according to claim 1, characterized in that: The following steps are involved: S1. Feeding, crushing and conveying: each layer of material is fed into the crushing hopper assembly (11) of each thermoplastic extruder (10) for mixing and crushing, so that the crushed materials of corresponding sizes can quickly enter the hot melt conveying pipe (12) from the bottom, and are quickly spirally conveyed to the front end under the action of the spiral conveying rod (121) inside the hot melt conveying pipe (12); S2. Constant temperature hot melt process: When the hot melt conveying tube (12) conveys the scraps, each heating fan (14) installed at the bottom of the outer air duct (13) blows the heat seal into the hot air tube cavity (131) and discharges it from the air outlet (133) to avoid overheating. During this period, the hot air is evenly distributed on the surface of the hot melt conveying tube (12) for uniform heating, so that the scraps conveyed by the hot melt conveying tube (12) can be hot melted and conveyed forward; S3. Segmented filtering and hot melting: During the hot melting process, the first dispersion filter plates (122) and the second dispersion filter plates (134) provided on the spiral conveying rod (121) filter the scraps multiple times, so that the spiral conveying rod (121) squeezes and conveys the scraps and presses them against the first dispersion filter plates (122), and the molten material can pass through the first dispersion filter plates (122), while the oversized scraps are left to continue hot melting. Since the surface of the first dispersion filter plates (122) can contact the inner side of the hot melt conveying pipe (12), the heat can be quickly transferred to the first dispersion filter plates (122) to generate high temperature, and the coarser scraps filtered out are hot melted, while other impurities that cannot be hot melted by high temperature are filtered out; S4. Eliminating bubbles by air pressure: When the hot melt delivery tube (12) is hot melted, the hot melt delivery tube (12) is evacuated by a vacuum pump (17) and a vacuum tube (123) to remove bubbles in the hot melt material, increase the density, and at the same time increase the internal heat of the hot melt delivery tube (12) to melt the material; S5. Material metering and conveying process: The hot-melt material enters the transition conveying pipe (15) from the hot-melt conveying pipe (12), is metered by the metering pump (16) in the middle of the transition conveying pipe (15), and is conveyed to the feed end (23) of the plate-discharging composite die head (20); S6. Composite plate pressure forming process: The feed end (23) of the plate discharge composite machine head (20) is correspondingly connected to the four material ports (222) of the connecting pipe (221). After continuous extrusion, the hot melt materials in the four material ports (222) respectively enter the conical pressure port (212). The hot melt materials are pressurized into the horizontal plate cavity (213) through the conical pressure port (212), so that the thermoplastic material in the horizontal plate cavity (213) is relatively dense, and is transported to the plate discharge groove (24) in layers through the horizontal plate cavities (213) distributed in the upper and lower layers. When being transported in the plate discharge groove (24), each layer of hot melt material will be squeezed and bonded to each other, and under the action of the cooler (25), each layer of thermoplastic in the horizontal plate cavity (213) is cooled and formed, and finally a thermoplastic composite plate is formed and output from the end of the plate discharge groove (24) and transported to the next production and processing step.

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