Moulding equipment for double-net TPU (Thermoplastic Polyurethane) leather

Abstract

The utility model discloses a forming equipment of netted TPU leather, including frame, unreeling device, cooling device, take-up device, TPU film casting extruder, cutting device and distributing device, take-up device has reeling roller, unreeling device has screen cloth film placing roller, PP paper placing roller and unreeling frame, cooling device has two cooling roller, and the TPU film casting extruder has two cooling roller. A cooling forming space is formed between the two cooling rollers, the cooling device is mounted on the rack in a manner of adjusting the size of the cooling forming space, and the output end of the TPU film casting extruder falls above the cooling forming space; the cutting device is located between the cooling device and the winding device and provided with a material passing roller, and cutting knives are arranged above the two ends of the material passing roller in the axial direction. The material distributing device is located between the cutting device and the winding device and provided with a plurality of material distributing roller sets, each material distributing roller set is provided with a separating roller and two clamping rollers, and the separating roller is located above the two clamping rollers. Compared with the prior art, the surface of the product is smoother, and forming is simpler.

Description

Technical Field

[0001] This invention relates to the field of TPU material technology, and in particular to a molding device for mesh-reinforced TPU leather. Background Technology

[0002] TPU materials are widely used in footwear, clothing, bags, and other fields. TPU materials can enhance the appearance and texture of products. Generally, TPU film is extruded in advance using a TPU film casting extruder, and then the TPU film is laminated onto the surface of the product using laminating equipment to improve the aesthetics and functionality of the product surface. In the prior art, such as the leather laminating equipment in application number 2020200563248, it includes an unwinding device, a sizing device, a baking device, a laminating device, a cooling device, and a winding device. The laminating device has two laminating rollers that are arranged vertically opposite each other and rotated on the leather laminating equipment. The two laminating rollers are spaced vertically opposite each other to form a material passage gap for the material to pass through. In use, the unwinding device has a pre-processed leather base fabric ready for lamination. The leather base fabric is sized by the sizing device, and the baking device heats the leather base fabric to a soft state before it passes through the material feeding gap of the lamination device. Two unwinding rollers for unwinding TPU film are set outside the lamination roller, and TPU film passing through the material feeding gap is unwound from both the upper and lower sides of the leather base fabric at the same time. The leather base fabric is between the two TPU films. Under the action of the two lamination rollers, the two TPU films are respectively laminated to the upper and lower surfaces of the leather base fabric. Finally, after cooling and forming, it is wound up by the winding device.

[0003] Before applying the film, the aforementioned laminating equipment requires extruding and winding a TPU film using a TPU film casting extruder. The TPU film is then applied to the base fabric using a laminating roller. After the base fabric is processed, the TPU film is laminated with it. If the dust on the surface of the base fabric is not completely cleaned or the surface material of the base fabric is uneven, air bubbles may easily form on the TPU film or the TPU film may not adhere smoothly to the base fabric. This results in poor flatness of the leather product, affecting the quality of the leather product, and also increases the production process and production costs.

[0004] In view of this, the new type of person in this case conducted in-depth research on the issue, which led to the emergence of this case. Utility Model Content

[0005] The purpose of this invention is to provide a smooth, high-quality mesh-reinforced TPU material and a molding device capable of producing high-quality leather products with a smooth surface.

[0006] To achieve the objective, this invention adopts the following technical solution:

[0007] A molding device for a mesh-bonded TPU material includes a frame and an unwinding device, a cooling device, and a winding device mounted on the frame. The winding device has a winding roller with its extension direction as the front-to-back direction. It also includes a TPU film casting extruder, a slitting device, and a material distribution device mounted on the frame. The unwinding device has a mesh film placement roller for winding a mesh film, a PP paper placement roller for winding PP paper, and an unwinding frame for disassembling and placing the winding roller. The cooling device has two transversely opposite cooling rollers with a cooling forming gap between them. The cooling device is mounted on the frame in a way that allows adjustment of the cooling forming gap. The TPU film casting extruder has an extrusion nozzle extending along the length of the cooling forming gap. The extrusion nozzle falls within the width of the cooling forming gap and is located above it. The length of the extrusion nozzle is greater than the width of the mesh film on the mesh film placement roller. The winding device is located outside the output end of the cooling device, and the unwinding frame is located outside one side of the two cooling rollers.

[0008] The dividing device is located between the cooling device and the winding device. The dividing device has a feed roller for the product to pass through and a cutter to cut the front and rear ends of the product straight. The cutter is provided above the two ends of the feed roller in the axial direction, and there is a cutting gap between the blade of the cutter and the feed roller.

[0009] The material separating device is located between the dividing device and the winding device. The material separating device has several groups of material separating rollers, which are arranged laterally at intervals. Each group of material separating rollers has a separating roller and two laterally opposite clamping rollers, with the separating roller positioned above the two clamping rollers.

[0010] The mesh film placement roller is located outside the left side of the two cooling rollers, the PP paper placement roller is located outside the right side of the two cooling rollers, the feed roller is located outside the left side of the two cooling rollers, the take-up roller is located outside the left side of the feed roller, there are two material distribution devices, which are located outside the front end and rear end of the feed roller respectively, and the unwinding frame is located outside the right side of the two cooling rollers.

[0011] Both the mesh film placement roller and the PP paper placement roller are rotatably mounted on the frame via a placement frame. The placement frame has a mesh film placement frame for the mesh film placement roller to rotatably place on and a PP paper placement frame for the PP paper placement roller to rotatably place on. The mesh film placement frame is located outside the left side of the two cooling rollers, the PP paper placement frame is located outside the right side of the two cooling rollers, and the unwinding frame is located outside the right side of the PP paper placement frame. The mesh film placement frame, the PP paper placement frame, and the unwinding frame all have two vertical blocks spaced apart in the front-back direction. The top surface of the vertical block is recessed with an arc-shaped groove. A limiting rod that can extend into or out of the upper end of the arc-shaped groove is screwed onto the upper end of the vertical block. The limiting rod is horizontally arranged in the left-right direction, and the top surface of the unwinding frame is higher than the top surface of the placement frame.

[0012] The two cooling rollers are divided into a left cooling roller and a right cooling roller. The left cooling roller has left vertical blocks erected on the frame on both the front and rear sides. The left cooling roller is rotatably mounted on the two left vertical blocks. The right cooling roller has right vertical blocks slidably mounted on the frame on both the front and rear sides. The right cooling roller is rotatably mounted on the two right vertical blocks. The frame has a drive device extending in the left-right direction on the right side of the right cooling roller, which can drive the right vertical blocks to move left and right.

[0013] A horizontally mounted mounting rod, parallel to the material feed roller, is suspended above the material feed roller. Two cutters are arranged at intervals, one in front of the other, and are vertically positioned with their blades facing the material feed roller. The two cutters are rotatably mounted on the mounting rod in a manner that allows for adjustment of the distance between them, either facing each other to the left or back to back.

[0014] The material distribution device has a material distribution frame, which is set vertically. The clamping rollers are set horizontally and perpendicular to the material distribution frame. The two clamping rollers are divided into a first clamping roller and a second clamping roller. The first clamping roller and the second clamping roller are set laterally to form a material distribution gap. The first clamping roller is rotatably fixed on the material distribution frame. The second clamping roller is oscillatingly mounted on the material distribution frame in a manner that allows it to move toward or away from the first clamping roller. A material collection bucket is provided below the material distribution gap. The separation rollers are rotatably mounted on the side of the first clamping roller facing the dividing device.

[0015] A horizontally positioned fixing rod protrudes from the material distribution frame at the location of the second clamping roller. A lower hinge block protrudes from the top surface of the left end of the fixing rod. An upper swing block is hinged to the upper end of the lower hinge block. The second clamping roller is rotatably mounted on the upper right side of the upper swing block.

[0016] Two feed racks have rotatably mounted guide rollers on opposite sides. The guide rollers are parallel to the feed racks and are mounted on the feed racks in a manner that allows them to swing up and down along the feed racks.

[0017] This invention relates to a molding device for sandwiched TPU material. In application, the ends of the mesh film and the PP paper are pulled into the cooling and molding gap. The TPU film casting extruder is started, and the extrusion port of the TPU film casting extruder extrudes TPU raw material between the ends of the mesh film and the PP paper. Two cooling rollers move relative to each other, and their cooling function is activated, causing the TPU raw material to cool and be extruded to form a first layer of TPU film between the mesh film and the PP paper. The output ends of the two cooling rollers output a preliminary molded product composed of the mesh film, the first layer of TPU film, and the PP paper. The preliminary molded product output from the two cooling rollers then passes over the bottom surface of the feed roller to the take-up roller for winding. The mesh film... At the outermost layer, the take-up roller with the initial product is placed on the unwinding frame and unwound. The two cooling rollers are reset, and the end of the initial product is pulled into the cooling and forming gap. The TPU film casting extruder is started, and the extrusion port of the TPU film casting extruder extrudes TPU raw material onto the side of the mesh film of the initial product facing away from the first TPU film. The two cooling rollers move relative to each other again, and the cooling function of the two cooling rollers is activated, so that the TPU raw material is cooled and squeezed to form the second TPU film on the outside of the mesh film. The output end of the two cooling rollers outputs the molded product composed of the second TPU film, the mesh film, the first TPU film and PP paper, and finally it is wound up by the take-up roller.

[0018] Compared with existing technologies, the new molding equipment for sandwich TPU leather has the following advantages:

[0019] Beneficial effects:

[0020] 1. The material sorting device enables the PP paper on the waste strips to be recycled and reused, resulting in a high recycling rate of waste materials;

[0021] Second, because the mesh film layer has through holes, the TPU raw material extruded from the output end of the TPU film casting extruder has a temperature. Under the pressure of the cooling roller, the TPU raw material can easily penetrate into the through holes of the mesh film, thus better bonding with the mesh film to form a TPU film. This allows the mesh film layer to better adhere to the two TPU films.

[0022] Third, because the surface of PP paper is smooth and flat, the TPU film is laminated onto the surface of PP paper by extrusion, which makes the adhesion between the film layers better and the surface of the mesh TPU material is smoother. Moreover, the PP paper makes the entire mesh TPU material more moisture-proof, pressure-resistant and anti-slip.

[0023] Fourth, TPU film is directly extruded from the output end of the TPU film casting extruder and laminated with other film layers, reducing the chance of dust contact on the TPU film surface. This allows for smooth bonding between the layers of the mesh-coated TPU material, improving the surface smoothness of the product and resulting in better lamination quality, more uniform material, and higher product quality. Furthermore, it eliminates the need for rewinding each time the TPU film is laminated, reducing processing steps, increasing production efficiency, and lowering production costs. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this novel invention.

[0025] Figure 2 This is a schematic diagram of the structure of the unwinding device, cooling device, winding device, and TPU film casting extruder of this novel invention.

[0026] Figure 3 This is a schematic diagram of the cooling device and the TPU film casting extruder of this novel invention.

[0027] Figure 4 This is a schematic diagram of the structure of the new dividing device and material dispensing device. Detailed Implementation

[0028] To further explain the technical solution of this invention, a detailed description is provided below in conjunction with the accompanying drawings.

[0029] A molding device for mesh-reinforced TPU material, such as Figures 1-4 As shown, the machine includes a frame 1, a placement rack 2 on the top surface of the frame 1, and an unwinding device, a cooling device 4, a winding device 5, a TPU film casting extruder 6, a slitting device 7, and a material distribution device. The unwinding device is partially mounted on the placement rack 2. The winding device 5 has a winding roller, with the extension direction of the winding roller as the front-to-back direction. The way the winding roller rotates to wind up the film product is a well-known technique to those skilled in the art and will not be described in detail here.

[0030] The unwinding device includes a mesh film placement roller 31 for winding the mesh film, a PP paper placement roller 32 for winding the PP paper, and an unwinding frame 33 for disassembling and placing the take-up roller. The take-up device 5 is located outside the output end of the cooling device 4. Specifically, the mesh film placement roller 31 is located above and to the left of the two cooling rollers, the PP paper placement roller 32 is located above and to the right of the two cooling rollers, the unwinding frame 33 is located to the right of the PP paper placement roller 32, and the take-up roller is located to the left of the mesh film placement roller 31. That is, both the mesh film placement roller 31 and the PP paper placement roller 32 are rotatably mounted on the frame 1 via the placement frame. The placement frame 2 has a mesh film placement frame 21 for rotatably placing the mesh film placement roller 31 and a PP paper placement frame 32 for rotatably placing the PP paper. The placement rack 22, the mesh film placement rack 21 is located outside the left side of the two cooling rollers, the PP paper placement rack 22 is located outside the right side of the two cooling rollers, and the unwinding rack 33 is located outside the right side of the PP paper placement rack 22. The mesh film placement rack 21, the PP paper placement rack 22 and the unwinding rack 33 each have two vertical blocks spaced apart in the front-back direction. The top surface of the vertical block is recessed with an arc-shaped groove 100. The upper end of the vertical block is screwed with a limiting rod that can extend into or out of the upper end of the arc-shaped groove 100. The limiting rod is horizontally arranged in the left-right direction. The top surface of the unwinding rack 33 is higher than the top surface of the placement rack. The mesh film placement roller 31, the PP paper placement roller 32 and the winding roller are all circular rollers. The front and rear ends of the circular rollers are provided with rotating rods that match the arc-shaped groove 100. The limiting rods are stacked inside the rotating rods. In application, the two rotating rods of the mesh film placement roller 31 are rotated and extended into the arc groove 100 of the mesh film placement frame 21, the two rotating rods of the PP paper placement roller 32 are rotated and extended into the arc groove 100 of the PP paper placement frame 22, and the two rotating rods of the take-up roller are rotated and extended into the arc groove 100 of the PP paper placement frame 22. The limiting rod is moved to the right to close the top surface of the arc groove 100. The setting of the limiting rod makes it difficult for the circular roller to shake up and down when unwinding the product.

[0031] The cooling device 4 has two horizontally opposite cooling rollers, with a cooling forming gap 200 between them. The cooling device 4 is mounted on the frame 1 in a way that allows the cooling forming gap 200 to be adjusted. Specifically, the two cooling rollers are a left cooling roller 41 and a right cooling roller 42. The left cooling roller 41 has left vertical blocks 411 erected on the frame 1 on both its front and rear sides. The left cooling roller 41 is rotatably mounted on the two left vertical blocks 411, meaning there are two left vertical blocks 411. The two left vertical blocks 411 are erected and spaced apart on the top surface of the frame 1 in the front-to-back direction. The left vertical blocks 411 have rotating openings that extend through the front and rear. The front and rear ends of the left cooling roller 41 are respectively rotatably inserted into the two rotating openings. The right cooling roller 42 has sliding mountings erected on both its front and rear sides on the frame 1. The right vertical block 421 and the right cooling roller 42 are rotatably mounted on the two right vertical blocks 421. The way the right cooling roller 42 is rotatably mounted on the right vertical block 421 is similar to the way the left cooling roller 41 is rotatably mounted on the left vertical block 411. The frame 1 is provided with a driving device extending in the left and right direction on the right side of the right cooling roller 421, which can drive the right vertical block 421 to move left and right. That is, the bottom surface of the two right vertical blocks 421 is provided with a slider. The top surface of the frame 1 is provided with a slide rail corresponding to the position of the slider and slidingly cooperating with the slider. The front end and rear end of the top of the frame 1 are respectively provided with a driving cylinder 11 on the right side of the right vertical block 421. The driving cylinder 11 is set to the left, and the output end of the two driving cylinders 11 is connected to the two right vertical blocks 421 respectively. The two driving cylinders 11 constitute the above-mentioned driving device. In application, the drive cylinder 11 is activated, causing the right vertical block 421 to move left and right on the slide rail, which in turn causes the right cooling roller 42 to move left and right. The drive cylinder 11 controls the left and right movement of the right cooling roller 42 relative to the left cooling roller 41. When the processed product enters the cooling forming gap 200 for extrusion, the extrusion pressure of the right cooling roller 42 relative to the left cooling roller 41 can be controlled. The method of controlling the extrusion pressure of the right cooling roller 42 relative to the left cooling roller 41 by the drive cylinder is known technology, and the method of cooling the product entering the cooling forming gap 200 by the two cooling rollers is also known technology, which will not be elaborated here. For example, the working method of the cooling roller in application number 2023224638983 is similar to the cooling method of the two cooling rollers in this invention.

[0032] The TPU film casting extruder 6 has an extrusion port extending along the length direction of the cooling forming gap 200. The extrusion port falls within the width range of the cooling forming gap 200 and is located above the cooling forming gap 200. The length of the extrusion port is greater than the width of the mesh film placed on the mesh film placement roller 31. The method of extruding TPU film from the extrusion port by the TPU film casting extruder 6 is a well-known technology and will not be described in detail here. For example, the method of extruding TPU film in application number 2020202292096 is similar to the method of extruding TPU film by the TPU film casting extruder 6 of this invention. In application, TPU raw material is extruded from the output end of the TPU film casting extruder 6, and a TPU film is formed within the cooling forming gap 200 under the cooling and extrusion of the two cooling rollers. Since the length of the extrusion port is greater than the width of the mesh film placed on the mesh film placement roller 31, the width of the TPU film after forming is greater than the width of the mesh film.

[0033] The dividing device 7 is located between the cooling device 4 and the winding device 5. The dividing device 7 has a feed roller 71 for the product to pass through and cutters 72 that cut the product straight down at both ends. The cutters 72 are respectively positioned above both ends of the feed roller 71 in the axial direction, and there is a cutting gap between the cutting edge of the cutter 72 and the feed roller 71. Specifically, the feed roller 71 is located to the left of the two cooling rollers, and the winding roller is located to the left of the feed roller 71. A horizontally mounted mounting rod 711, parallel to the feed roller 71, is suspended above the feed roller 71. The cutters are arranged at intervals, one in front of the other, and are vertically positioned with their blades facing the feed roller. The two cutters 72 are rotatably mounted on the mounting rod 711, which is a circular rod. The two cutters 72 are arranged at intervals, one in front of the other, and are mounted on the mounting rod 711 by a sleeve block 721. The top surface of the sleeve block 721 is recessed with a threaded opening that communicates with the hollow cavity of the sleeve block 721. A tightening rod is screwed into the threaded opening of the sleeve block 721 and tightened against the outer wall of the mounting rod 711. During application, the PP paper may shift during lamination, causing misalignment between the PP paper and other film layers, resulting in uneven edges on both sides of the product. To ensure uniform product width, a cutting device is used to cut the front and rear ends of the final formed product. The product output from the cooling and forming gap 200 is output as a strip-shaped sheet structure to the left and passes over the top surface of the feed roller 71. The relative spacing between the two cutters 72 is adjusted according to the required product size. The lower ends of the two cutters 72 correspond to the front and rear ends of the product passing through the feed roller 71. During the process of the product passing through the cutting gap, the two cutters 72 cut off the front and rear ends of the product into waste strips. The product becomes a regular square sheet and is finally wound up by the winding roller.

[0034] The material distribution device is located between the dividing device 7 and the winding device 5. Two material distribution devices are provided, one at the front end and the other at the rear end of the feed roller 71. Each material distribution device has a material distribution frame 81 with several groups of material distribution rollers arranged laterally at intervals. Each group of material distribution rollers has a separating roller 82 and two laterally opposing clamping rollers 83, with the separating roller 82 positioned above the two clamping rollers 83. Specifically, the material distribution frame 81 is vertically positioned, while the clamping rollers 83 and the separating roller 82 are horizontally positioned and aligned with the feed rollers 83. The material distribution frame 81 is vertically arranged. The clamping rollers 83 are horizontally arranged either along the front-to-back direction or along the left-to-right direction. Here, we take the horizontal arrangement of the clamping rollers 83 as an example. The two clamping rollers 83 are divided into a first clamping roller 831 and a second clamping roller 832. The first clamping roller 831 and the second clamping roller 832 are spaced apart along the front-to-back direction to form a material distribution gap. A material collection bucket is provided below the material distribution gap, and the first clamping roller 831 is rotatably fixed on the material distribution frame 81, that is, the left side of the material distribution frame 81 corresponds to the upper part of the material distribution frame 81. A protruding rod 811 is provided at the position of the first clamping roller 831. A through-hole extending in the left-right direction is provided on the first clamping roller. The protruding rod 811 extends out of the through-hole, and a limiting block is connected to the left end of the protruding rod 811 to prevent the first clamping roller from disengaging from the protruding rod 811. The second clamping roller 832 is oscillatingly mounted on the material distribution frame 81 in a manner that allows it to move towards or away from the first clamping roller 831. Specifically, a horizontally positioned fixing rod 812 is provided on the material distribution frame 81 at the position of the second clamping roller 832. The left end of the 12 has a lower hinge block protruding upwards. The upper end of the lower hinge block is hinged to an upper swing block that is vertically set. The second clamping roller is rotatably mounted on the upper right side of the upper swing block. That is, the upper end of the upper swing block is locked with a horizontal bar that is horizontally set in the left-right direction. The second clamping roller has a through-hole that runs in the left-right direction. The horizontal bar passes through the right side of the through-hole. The right end of the horizontal bar is provided with a limiting block to prevent the second clamping roller from falling out of the horizontal bar. The first clamping roller 831 is rotatably mounted on the side facing the dividing device. In application, taking a group of two separating rollers as an example, the PP paper on the waste strip is separated. The PP paper passes through one separating roller 82 and through the corresponding separating distance below the separating roller. Finally, it is collected in a collection bucket. The other film layers on the waste strip pass through the other separating roller 82 and through the corresponding separating distance below the separating roller. Furthermore, the second clamping roller 832 can move relative to the first clamping roller, and the distance between the second clamping roller 832 and the first clamping roller 831 can be adjusted to facilitate the insertion of PP paper or other film layers into the material distribution gap.

[0035] This invention relates to a molding device for a mesh-bonded TPU material. In application, the ends of the mesh film and the PP paper are pulled within a cooling and molding gap of 200 mm. The TPU film casting extruder 6 is started, and the extrusion port of the TPU film casting extruder 6 extrudes TPU raw material between the ends of the mesh film and the PP paper. The right cooling roller moves to the left, and the cooling function of both cooling rollers is activated, causing the TPU raw material to be cooled and extruded to form a first layer of TPU film between the mesh film and the PP paper. The output ends of the two cooling rollers output a preliminary molded product composed of the mesh film, the first layer of TPU film, and the PP paper. The preliminary molded product output from the two cooling rollers passes over the bottom surface of the feed roller 71 to the take-up roller for winding, with the mesh film at the outermost layer. The take-up roller containing the preliminary molded product is then placed on the unwinding frame 33 for unwinding. The right cooling roller returns to its original position, and the ends of the preliminary molded product are pulled within a cooling and molding gap of 200 mm. The TPU film casting extruder 6 is started, and the TPU film casting extruder... The TPU raw material is extruded from the extrusion port of machine 6 onto the side of the mesh film of the initial product facing away from the first TPU film. The right cooling roller moves to the left again, and the cooling function of the two cooling rollers is activated, so that the TPU raw material is cooled and extruded to form a second TPU film on the outside of the mesh film. The output end of the two cooling rollers outputs a molded product composed of the second TPU film, the mesh film, the first TPU film, and PP paper, and finally it is wound up by the winding roller. Compared with the existing technology, the TPU film casting extruder can directly extrude TPU film and laminate it with the mesh film and PP paper, so that the layers of the mesh TPU material can be flatly bonded, improving the flatness of the product surface, resulting in better composite quality between the TPU film and the mesh film layers, uniform material, and high product quality. Moreover, the processing is simple, saves processing steps, and reduces production costs. In addition, the setting of the material distribution device also allows the cut waste to be recycled into PP paper, with a high recycling rate.

[0036] In this novel design, an advantageous feature is that an inlet separating roller 812 is rotatably mounted on one side of each of the two separating racks 81. The inlet separating roller 812 is parallel to the separating roller 82 and is mounted on the separating rack 81 in a manner that allows it to swing up and down along the separating roller 82. Specifically, the inlet separating roller 812 is horizontally positioned in the left-right direction, and a downwardly inclined swing rod connected to the right end of the inlet separating roller 812 is attached to the separating rack. The lower end of the swing rod is hinged to the separating rack 81, and the hinged manner is similar to that of the second clamping roller 832 hinged to the upper swing block, which will not be elaborated further here. In application, if the waste strips are separated into PP paper and other film layers, after the waste strips are cut, the inlet separating roller 812 first separates the PP paper and other film layers, and then passes the PP paper and other film layers over the corresponding separating rollers 82, thus enabling the separated waste strips to be transported more smoothly.

[0037] Compared with existing technologies, the new molding equipment for sandwich TPU leather has the following advantages:

[0038] Beneficial effects:

[0039] 1. The material sorting device enables the PP paper on the waste strips to be recycled and reused, resulting in a high recycling rate of waste materials;

[0040] Second, because the mesh film layer has through holes, the TPU raw material extruded from the output end of the TPU film casting extruder 6 has a temperature. Under the pressure of the cooling roller, the TPU raw material can easily penetrate into the through holes of the mesh film, thereby better bonding with the mesh film to form a TPU film. This makes the mesh film layer better bonded with the first TPU film and the second TPU film.

[0041] Third, because the surface of PP paper is smooth and flat, the TPU film is laminated onto the surface of PP paper by extrusion, which makes the adhesion between the film layers better and the surface of the mesh TPU material is smoother. Moreover, the PP paper makes the entire mesh TPU material more moisture-proof, pressure-resistant and anti-slip.

[0042] Fourth, TPU film can be directly extruded from the output end of the TPU film casting extruder and laminated with other film layers. There is no need to rewind the TPU film each time it is laminated, which reduces the processing steps, improves production efficiency, and reduces production costs. Moreover, directly extruding the TPU film and laminating it reduces the chance of the TPU film surface coming into contact with dust, resulting in better product flatness.

[0043] Fifth, the segmentation device enables the molded mesh-reinforced TPU material to form a regular sheet structure, which is more conducive to subsequent processing and molding.

[0044] The product form of this invention is not limited to the illustrations and embodiments in this case. Any appropriate changes or modifications made to it based on similar ideas should be considered as not departing from the patent scope of this invention.

Claims

1. A molding apparatus for a mesh-reinforced TPU material, comprising a frame and an unwinding device, a cooling device, and a winding device mounted on the frame, wherein the winding device has a winding roller with the extension direction of the winding roller as the front-back direction; characterized in that: It also includes a TPU film casting extruder, a slitting device, and a feeding device mounted on a frame. The unwinding device has a mesh film placement roller for winding the mesh film, a PP paper placement roller for winding the PP paper, and an unwinding frame for disassembling and placing the take-up roller. The cooling device has two cooling rollers arranged laterally opposite each other, with a cooling forming gap between the two cooling rollers. The cooling device is mounted on the frame in a way that allows adjustment of the cooling forming gap. The TPU film casting extruder has an extrusion nozzle extending along the length of the cooling forming gap. The extrusion nozzle falls within the width range of the cooling forming gap and is located above the cooling forming gap. The length of the extrusion nozzle is greater than the width of the mesh film on the mesh film placement roller. The take-up device is located outside the output end of the cooling device, and the unwinding frame is located outside one side of the two cooling rollers. The dividing device is located between the cooling device and the winding device. The dividing device has a feed roller for the product to pass through and a cutter to cut the front and rear ends of the product straight. The cutter is provided above the two ends of the feed roller in the axial direction, and there is a cutting gap between the blade of the cutter and the feed roller. The material separating device is located between the dividing device and the winding device. The material separating device has several groups of material separating rollers, which are arranged laterally at intervals. Each group of material separating rollers has a separating roller and two laterally opposite clamping rollers, with the separating roller positioned above the two clamping rollers.

2. The molding equipment for a mesh-reinforced TPU material according to claim 1, characterized in that: The mesh film placement roller is located outside the left side of the two cooling rollers, the PP paper placement roller is located outside the right side of the two cooling rollers, the feed roller is located outside the left side of the two cooling rollers, the take-up roller is located outside the left side of the feed roller, there are two material distribution devices, which are located outside the front end and rear end of the feed roller respectively, and the unwinding frame is located outside the right side of the two cooling rollers.

3. The molding equipment for a mesh-reinforced TPU material according to claim 2, characterized in that: Both the mesh film placement roller and the PP paper placement roller are rotatably mounted on the frame via a placement frame. The placement frame has a mesh film placement frame for the mesh film placement roller to rotatably place on and a PP paper placement frame for the PP paper placement roller to rotatably place on. The mesh film placement frame is located outside the left side of the two cooling rollers, the PP paper placement frame is located outside the right side of the two cooling rollers, and the unwinding frame is located outside the right side of the PP paper placement frame. The mesh film placement frame, the PP paper placement frame, and the unwinding frame all have two vertical blocks spaced apart in the front-back direction. The top surface of the vertical block is recessed with an arc-shaped groove. A limiting rod that can extend into or out of the upper end of the arc-shaped groove is screwed onto the upper end of the vertical block. The limiting rod is horizontally arranged in the left-right direction, and the top surface of the unwinding frame is higher than the top surface of the placement frame.

4. The molding equipment for a mesh-reinforced TPU material according to claim 2, characterized in that: The two cooling rollers are divided into a left cooling roller and a right cooling roller. The left cooling roller has left vertical blocks erected on the frame on both the front and rear sides. The left cooling roller is rotatably mounted on the two left vertical blocks. The right cooling roller has right vertical blocks slidably mounted on the frame on both the front and rear sides. The right cooling roller is rotatably mounted on the two right vertical blocks. The frame has a drive device extending in the left-right direction on the right side of the right cooling roller, which can drive the right vertical blocks to move left and right.

5. The molding equipment for a mesh-reinforced TPU material according to claim 2, characterized in that: A horizontally mounted mounting rod, parallel to the material feed roller, is suspended above the material feed roller. Two cutters are arranged at intervals, one in front of the other, and are vertically positioned with their blades facing the material feed roller. The two cutters are rotatably mounted on the mounting rod in a manner that allows for adjustment of the distance between them, either facing each other to the left or back to back.

6. The molding equipment for a mesh-reinforced TPU material according to claim 2, characterized in that: The material distribution device has a material distribution frame, which is set vertically. The clamping rollers are set horizontally and perpendicular to the material distribution frame. The two clamping rollers are divided into a first clamping roller and a second clamping roller. The first clamping roller and the second clamping roller are set laterally to form a material distribution gap. The first clamping roller is rotatably fixed on the material distribution frame. The second clamping roller is oscillatingly mounted on the material distribution frame in a manner that allows it to move toward or away from the first clamping roller. A material collection bucket is provided below the material distribution gap. The separation rollers are rotatably mounted on the side of the first clamping roller facing the dividing device.

7. The molding equipment for a mesh-reinforced TPU material according to claim 6, characterized in that: A horizontally positioned fixing rod protrudes from the material distribution frame at the location of the second clamping roller. A lower hinge block protrudes from the top surface of the left end of the fixing rod. An upper swing block is hinged to the upper end of the lower hinge block. The second clamping roller is rotatably mounted on the upper right side of the upper swing block.

8. The molding equipment for a mesh-reinforced TPU material according to claim 7, characterized in that: Two feed racks have rotatably mounted guide rollers on opposite sides. The guide rollers are parallel to the feed racks and are mounted on the feed racks in a manner that allows them to swing up and down along the feed racks.

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