Preparation device and preparation process of TPEE three-layer co-extrusion polyester shading film

Abstract

The invention belongs to the technical field of shading film preparation, and particularly relates to a preparation device and a preparation process of a TPEE three-layer co-extrusion polyester shading film. The preparation device comprises a preparation production line, in the current shading film preparation process, when edge cutting and edge closing are conducted on the shading film, edge materials are crushed through an edge cutting and crushing machine and then fed into a hopper B through a draught fan; the cut edge materials are recycled and applied on line, the flatness after rolling is ensured, the constant tension force is controlled through operation, the problem of leather elastic retraction wrinkling is solved, the stability of edge material conveying is guaranteed, the cloth-plastic compatibility of the PPEE three-layer co-extrusion shading film is ensured by adopting the cloth-plastic composite fabric formed by compounding TPEE hot melt adhesive, polyester woven cloth and polyester non-woven fabric, and the service life of the cloth-plastic composite fabric is prolonged. The TPEE cloth-plastic composite material prepared by the method lays a foundation for realizing the path of recycling, reusing, energy conservation, environmental protection and carbon emission reduction after being used, and meanwhile, the prepared TPEE cloth-plastic composite material is applied to roller shutters, soft shutters, folding shutters, honeycombs and light-blocking and sun-shading cloth-plastic composite materials and can make a great contribution to the energy conservation and environmental protection cause.

Description

Technical Field

[0001] The invention belongs to the technical field of the preparation of light-shielding films, and particularly relates to a device for preparing a TPEE three-layer co-extruded polyester light-shielding film and a preparation process thereof. Background Art

[0002] The material characteristics of the TPEE three-layer co-extruded polyester light-shielding film are compatible with PET polyester fabrics and chemical fiber polyester fabrics. It solves the problem that after the cloth-plastic composite materials are discarded, they can be 100% recycled, crushed, granulated and reused, which can save a large amount of original PET raw materials, greatly reduce carbon emissions and save raw materials at the same time; the three-layer co-extruded film is designed with a black layer, which realizes 100% light shielding and anti-ultraviolet penetration into the room, reduces the indoor temperature, makes the home more comfortable, reduces the operating frequency of the air conditioner compressor, and saves the home electricity cost; compared with the traditional PU-coated light-shielding curtain and PVC-coated light-shielding film, the light-weight light-shielding film only uses one-fifth of the material, which greatly saves petrochemical raw materials, saves a large amount of energy compared with the coating process, and only requires a 150-square-meter factory building and a three-layer co-extrusion film line for equipment installation. The power consumption is only 100 kilowatts per hour, and more than 2,000 meters of film can be produced per hour, which is more than twice as efficient as the traditional PU and PVC coating processes. It is formed in one step. For the coated light-shielding cloth-plastic material, the black layer needs to be primed first, and then the colored layer is coated. At least two reciprocating processes are required, and the work efficiency cannot be compared with that of the co-extrusion equipment;

[0003] The material application is: the main raw material and polyolefin modified color masterbatch are mixed and used, which is efficient and simple. Various color masterbatches can be prepared according to different color requirements. The carrier is designed corresponding to the TPEE main material, with good compatibility, strong coloring power, and stable and reliable film formation;

[0004] The co-extruded light-shielding film obtained by rolling is compounded with a low-temperature and high-flowability TPEE glue and polyester fabric, which ensures the compatibility of the three materials of cloth, film and glue, and lays a foundation for the subsequent waste gas recovery and regeneration of terminal applications, so as to achieve the goal of 100% recycling, energy conservation and emission reduction; the TPEE three-layer co-extruded polyester light-shielding film can also be applied to daily household and tourism products such as cloth-plastic composite opening and closing curtains, cloth-plastic composite rolling curtains, cloth-plastic composite honeycomb curtains, cloth-plastic composite light-shielding cloth, camping tents, and sunshades; based on the high air permeability and moisture permeability of the TPEE material, it can also be applied to smart wearable products, including down jackets, military and police uniforms, breathable and moisture-permeable raincoats, etc.; the TPEE three-layer co-extruded film is introduced with graphene antibacterial, antifungal, mildew-proof and mite-proof mother liquor, which further ensures the safety, environmental protection and comfort, double-sided film form and multi-functional efficiency of the product when it is applied. It has completely achieved the expected goal through official testing;

[0005] Based on new materials of TPEE polyester and polyether thermoplastic elastomer, it can be compatible with PET and PBT polyester chemical fiber to weave polyester cloth, so as to achieve the purpose of 100% renewable, and achieve the effects of energy conservation, consumption reduction and emission reduction. Due to the high and low temperature resistance of the material, it is rigid without cracking and soft as water. The invention is applied to various home decoration products such as heat-insulating, light-blocking and anti-ultraviolet honeycomb curtains, roller blinds and cloth-plastic composite vertical curtains. Based on the characteristics of high air permeability and moisture permeability of TPEE material, it can also be applied to the field of intelligent wearable products. Due to the excellent anti-aging performance of the material, it can achieve the effect of durability; The equipment configured with the light-blocking, breathable and moisture-permeable film is a three-layer coextrusion structure. The middle and bottom layers are light-blocking layers, and the surface layer is a coloring layer, which can achieve a variety of appearance colors. Only by introducing masterbatch, only 15 grams per square meter is required, saving the material consumption, light in weight and low in price. By introducing graphene functional masterbatch, the effects of long-term antibacterial, antifungal and mildew prevention, and the formation of a multifunctional film with far-infrared negative ion release can be achieved;

[0006] During the preparation process of the light-blocking film, the edges of the light-blocking film need to be trimmed and the edges need to be recycled. At present, after the edges of the light-blocking film are trimmed, the edge materials need to be reused to save energy and reduce emissions. Therefore, special attention needs to be paid to the transmission of the edge materials, because when the cut materials enter the crusher, the edge materials will fall off the guide wheels due to the tightness problem. This phenomenon has become an urgent problem to be solved by those skilled in the art. Summary of the Invention

[0007] The purpose of the present invention is to provide a preparation device and a preparation process for a TPEE three-layer coextruded polyester light-blocking film to solve the problems raised in the above background technology.

[0008] To solve the above technical problems, the present invention provides the following technical solutions: A preparation device and a preparation process for a TPEE three-layer coextruded polyester light-blocking film, including a preparation production line. The preparation production line is arranged in a straight line and includes a chilled water unit, a one-to-three dehumidification and vacuum drying unit, three hoppers A, B, and C, three sets of screws, a distributor, a die, a rubber roller section, a pattern roller section, a peeling roller section, a bottom plate, a corona machine, a traction and edge-cutting roller section, a side-edge crusher, a flattening olive roller, a constant tension device, and a winding and rewinding section. The raw materials with different indexes of the three sets of screws are input into a special extrusion die through the distributor to form a film; The one-to-three dehumidification and vacuum drying unit is connected to the three hoppers A, B, and C through pipelines. The chilled water unit is connected to the rubber roller section through pipelines, and there are two pipelines, one is a water inlet pipe and the other is a water outlet pipe. The side-edge crusher is located on one side of the traction and edge-cutting roller section and is used for trimming and recycling the edges and crushing the edge materials. The side-edge crusher is connected to the hopper B by a crushed material air duct.

[0009] The present invention further illustrates that the preparation process comprises the following steps: step S1, the equipment arrangement structure is a straight-line arrangement, and the modified raw material prefabricated by TPEE is circulated and introduced through a one-to-three dehumidification vacuum drying unit, corresponding to three sets of extruders, automatically sucking and feeding, and continuously feeding and drying through a one-to-three dehumidification vacuum drying unit, and then real-time quantitative and uninterrupted introduction into three hoppers ABC; step S2, the material enters the screw, is heated to the required processing temperature by the screw, and then extruded, and the corresponding screw co-extrudes three layers, the middle bottom layer is the shading layer, and the surface layer is the coloring layer; step S3, the chilled water unit introduces cooling water into the stripping roller, and the extruded material enters the mold and the rubber roller step surface, and the chilled water unit adopts a one-to-three form to introduce cooling water into the stripping roller section, the patterned roller section and the rubber roller section. The roller section is pressed against each other; step S4, the corona machine is used to introduce the traction trimming roller section for the next section, and the trimming is carried out at the same time. The edge material is crushed by the edge collecting crusher, and then returned to the B hopper through the air conveying system and the crushed material air duct, and then flattened by the constant tensioner and the flattening olive roller, and then enters the winding and changing section for automatic metering and automatic film cutting; step S5, rolling, unwinding, packaging, shelf loading and storage; step S6, after the co-extruded film is prepared, it is equipped with TPEE hot melt adhesive cloth-plastic composite equipment, and at the same time, the pre-woven and dyed PET polyester polyester fabric is put on the constant tension cloth spreading rack, and after being glued by the gluing mold, it is compounded with the constant tension film, flattened and rolled, that is, a multifunctional cloth-plastic composite fabric is formed, thereby achieving the energy-saving and environmentally friendly purpose of 100% recyclable crushing and granulation after use.

[0010] The present invention further illustrates that the traction trimming roller section in step S4 includes two bases, roller one, roller two, roller three, a cutter, two guide wheels and a tension chamber, the trimming crusher is provided with a winding shaft, and the cut material is collected into the trimming crusher through the two guide wheels and the winding shaft; the roller one, roller two and roller three are all axially connected between the two bases, the roller two and roller three are arranged opposite to each other up and down, and press against the shading film, the roller one is located on the left side of the roller three, and the shading film is located on the surface of the roller one, the cutter is fixedly installed between the two bases, and is located above the roller one, The expansion chamber is fixedly installed above one of the bases and is located on the right side of roller three. One of the guide wheel bearings is installed above the front base, and the bottom end bearing of the other guide wheel is installed on the connecting shaft. A telescopic joint is fixed to the lower end of the connecting shaft. The lower end of the telescopic joint is fixedly connected to a connecting rod. A slider is fixed to the bottom end of the connecting rod. A slide rail and a motor are fixed to the bottom of the inner wall of the expansion chamber. The slider is slidably connected to the inner wall of the slide rail. A gear is fixedly connected to the output end of the motor. A tooth plate is fixed to one side of the connecting rod, and the tooth plate and the gear are meshed with each other.

[0011] The present invention further illustrates that an arc ball is fixed on one side of the connecting shaft, a guide block is fixed on the right side inner wall of the tension chamber, a guide rod is slidably connected to the inner wall of the guide block, a fixed rod is fixed to the left end of the guide rod, six extrusion balls are uniformly fixed on one side of the fixed rod, and a spring is fixed between the right side of the fixed rod and the right side inner wall of the tension chamber; after the connecting shaft moves, the arc ball comes into contact with the extrusion balls.

[0012] The present invention further illustrates that the telescopic joint is elastic.

[0013] The present invention further illustrates that a threaded hole is formed on the right side of the tension chamber, and a threaded rod is threadedly connected to the threaded hole; in the initial state of the threaded rod, there is a gap between the left end of the threaded rod and the right side of the fixed rod, and both the left end of the threaded rod and the right side of the fixed rod have magnetism and the magnetic poles are the same, and the spring is sleeved on the outer side of the threaded rod.

[0014] The present invention further illustrates that the rotation mode of the motor is to rotate clockwise for N turns and then rotate counterclockwise for N turns.

[0015] The present invention further illustrates that the number of clockwise and counterclockwise rotation turns N of the motor includes five and ten. When the number of clockwise and counterclockwise rotation turns N of the motor is ten, the threaded rod rotates slightly; when the number of clockwise and counterclockwise alternating rotation turns N of the motor is five, the threaded rod rotates a large amount, and the initial position of the arc ball is located in the middle of the six extrusion balls.

[0016] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: The present invention moves the guide wheel to the right to hold the cut material and move it to the right, thereby stretching the cut material, avoiding the phenomenon of material jamming and material detachment during the winding process due to loose tension and low tension during the winding of the cut material. After stretching the cut material, the motor rotates counterclockwise in the reverse direction, thereby loosening the cut material again, and tightening and loosening the cut material reciprocally, so as to have a proper degree of relaxation. On the one hand, it can ensure the smooth operation of the winding process, and on the other hand, it can avoid breaking the cut material due to continuous tension. Moreover, the faster the winding speed of the cut material by the edge trimming crusher, the more turns of the clockwise and counterclockwise alternating rotation of the motor. At this time, the winding speed is fast and the speed of the cut material is also fast. In order to make the cut material smoothly enter the edge trimming crusher, the tension force received by the cut material is increased, fully avoiding the cut material from detaching from the guide wheel.

[0017] During the process of the connecting shaft moving axially to the right, the arc ball is driven to move. When the arc ball moves to contact the extrusion ball, the extrusion ball is stressed and pushes the spring to deform through the fixed rod. The guide rod slides inside the guide block, and a reaction force generated by the spring applies a force to the arc ball, thereby avoiding the edge material from breaking due to the excessive moving speed of the connecting shaft, which affects the conveying of the edge material and improves the conveying stability. When the arc ball contacts and squeezes the extrusion ball, the connecting shaft is stressed. At the same time, the arc ball presses above the extrusion ball. As shown in the figure, the expansion joint is stretched and deformed, so that the guide wheel moves slightly upward. Then the arc ball reaches between the two extrusion balls, and through the elastic reset of the expansion joint, the guide wheel moves slightly up and down. When the guide wheel conveys the cut material, when the cut material breaks away from the limit groove, it can be bounced to re-enter the limit groove, so that the cut material is always located in the limit groove, maintaining the guiding ability for the cut material to improve the conveying efficiency of the cut material. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0019] Figure 1 is a schematic diagram of the production line for preparing the light-shielding film of the present invention;

[0020] Figure 2 is a schematic diagram of the structure of the traction and trimming roller section of the present invention;

[0021] Figure 3 is a schematic diagram of the internal structure of the tension cavity of the present invention;

[0022] Figure 4 is a plan view of the tension cavity of the present invention;

[0023] Figure 5 is a schematic diagram of the positional relationship between the extrusion ball and the arc ball after the connecting shaft of the present invention moves;

[0024] Figure 6 is a schematic diagram of the positional relationship between the internal structures of the tension cavity of the present invention;

[0025] Figure 7 is a schematic diagram of the positional relationship between the extrusion ball and the arc ball in the second embodiment of the present invention;

[0026] Figure 8 is a schematic diagram of the positional relationship between the extrusion ball and the arc ball in the third embodiment of the present invention;

[0027] In the figure: 1, base; 2, roller one; 3, roller two; 4, roller three; 5, cutter; 6, guide wheel; 61, connecting shaft; 611, arc ball; 62, expansion joint; 63, connecting rod; 631, toothed plate; 64, slider; 7, tension chamber; 71, slide rail; 72, motor; 721, gear; 73, guide block; 731, guide rod; 732, fixed rod; 733, extrusion ball; 74, spring; 75, threaded rod; 8, limit groove. Detailed implementation mode

[0028] The following further non-limiting detailed description of the technical solution of the present invention is made in conjunction with the preferred embodiments and their accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative work shall fall within the protection scope of the present invention.

[0029] Please refer to Figures 1-8 , the present invention provides a technical solution: a preparation device and a preparation process for a TPEE three-layer co-extruded polyester light-shielding film, including a preparation production line, which is arranged in a straight line and includes a chilled water unit, a one-drag-three dehumidification and vacuum drying unit, three hoppers A, B, and C, three sets of screws, a distributor, a die, a rubber roller section, a pattern roller section, a peeling roller section, a bottom plate, a corona machine, a traction and trimming roller section, a trimming and pulverizing machine, a flattening olive roller, a constant tension device, and a winding and rewinding section. The raw materials with different indexes of the three sets of screws are input into a special extrusion die through a distributor to produce a film;

[0030] The one-drag-three dehumidification and vacuum drying unit is connected to the three hoppers A, B, and C through pipelines. The chilled water unit is connected to the rubber roller section through pipelines, and there are two pipelines, one is the water inlet pipe and the other is the water outlet pipe. The trimming and pulverizing machine is located on one side of the traction and trimming roller section and is used for trimming and collecting the edges and pulverizing the edge materials. The trimming and pulverizing machine is connected to the hopper B by a pulverized material air duct.

[0031] The preparation process includes the following steps:

[0032] Step S1: The equipment layout structure is arranged in a straight line. The pre-prepared modified raw materials of TPEE are circularly introduced through the one-drag-three dehumidification and vacuum drying unit. Corresponding to the three sets of extruders, the materials are automatically sucked and fed, continuously fed and dried through the one-drag-three dehumidification and vacuum drying unit, and then continuously introduced into the three hoppers A, B, and C in real time and quantitatively;

[0033] Step S2: The materials enter the screw and are heated to the required processing temperature through the screw, and then extruded. The three layers are co-extruded corresponding to the screw. The middle and bottom layers are light-shielding layers, and the surface layer is a coloring layer;

[0034] Step S3: The chilled water unit introduces cooling water into the stripping roller, and the extruded material enters the interface between the die and the rubber roller. The chilled water unit uses a one - to - three form to introduce cooling water into the stripping roller section, and the pattern roller section and the rubber roller section are pressed against each other;

[0035] Step S4: Through the corona machine, it is introduced into the traction and edge - cutting roller section for the next stage, and at the same time, edge - cutting is performed. The edge material is crushed by the edge - collecting crusher, and then returned to the B hopper through the pneumatic conveying system and the crushed material air duct. After being flattened by the constant - tension device and the flattening olive roller, it enters the winding and roll - changing section for automatic length measurement and automatic film cutting;

[0036] Step S5: Coiling, unloading the coil, packaging, putting on the shelf, and warehousing;

[0037] Step S6: After the co - extruded film is prepared, it is equipped with a TPEE hot - melt adhesive cloth - plastic composite device. At the same time, the pre - woven and dyed PET polyester fabric is placed on the constant - tension fabric spreading frame. After gluing through the gluing die, it is compounded with the constant - tension film, flattened and wound up, that is, a multi - functional cloth - plastic composite fabric is formed, thus achieving the energy - saving and environmental - protection purpose of 100% recyclable crushing, granulation and regeneration after use.

[0038] The traction and edge - cutting roller section in Step S4 includes two bases 1, roller one 2, roller two 3, roller three 4, cutter 5, two guide wheels 6 and a tension cavity 7. The edge - collecting crusher is provided with a winding shaft, and the cut material is collected into the edge - collecting crusher through the two guide wheels 6 and the winding shaft;

[0039] Roller one 2, roller two 3 and roller three 4 are all shaft - connected between the two bases 1. Roller two 3 and roller three 4 are arranged opposite to each other up and down and press the light - shielding film. Roller one 2 is located on the left side of roller three 4, and the light - shielding film is located on the surface of roller one 2. Cutter 5 is fixedly installed between the two bases 1 and is located above roller one 2. Tension cavity 7 is fixedly installed above one of the bases 1 and is located on the right side of roller three 4. One of the guide wheels 6 is installed on the front base 1 through a bearing, and the bottom end of the other guide wheel 6 is installed on the connecting shaft 61 through a bearing. The lower end of the connecting shaft 61 is fixed with a telescopic joint 62, the lower end of the telescopic joint 62 is fixedly connected with a connecting rod 63, and the bottom end of the connecting rod 63 is fixed with a slider 64. The inner wall bottom of the tension cavity 7 is fixed with a slide rail 71 and a motor 72. The slider 64 is slidably connected to the inner wall of the slide rail 71. The output end of the motor 72 is fixedly connected with a gear 721, and a toothed plate 631 is fixed on one side of the connecting rod 63, and the toothed plate 631 meshes with the gear 721;

[0040] The cut material enters the right side of the rear guide wheel 6 through the right side of the front guide wheel 6, and then enters the edge trimming crusher through the surface of the winding shaft to crush the edge material. When winding the cut material, the motor 72 rotates clockwise first, driving the gear 721 to rotate clockwise. Through meshing with the tooth plate 631, the connecting rod 63 is driven to move to the right. The connecting rod 63 moves to the right along the sliding rail 71 through the slider 64, so as to drive the guide wheel 6 to move to the right through the telescopic joint 62 and the connecting shaft 61, pressing against the cut material to move to the right, thereby stretching the cut material, avoiding the phenomenon of material jamming and material detachment during the winding process due to low tension and looseness of the cut material during winding. After stretching the cut material, the motor 72 rotates counterclockwise in the reverse direction, thereby loosening the cut material again, tightening and loosening the cut material reciprocally, so as to be moderately loose. On the one hand, it can ensure the smooth operation of the winding process, and on the other hand, it can avoid breaking the cut material due to continuous tension.

[0041] One side of the connecting shaft 61 is fixed with an arc ball 611. The right side of the inner wall of the tension cavity 7 is fixed with a guide block 73. The inner wall of the guide block 73 is slidably connected with a guide rod 731. The left end of the guide rod 731 is fixed with a fixed rod 732. Six extrusion balls 733 are evenly fixed on one side of the fixed rod 732. A spring 74 is fixed between the right side of the fixed rod 732 and the right side of the inner wall of the tension cavity 7;

[0042] After the connecting shaft 61 moves, the arc ball 611 contacts the extrusion ball 733;

[0043] During the process of the connecting shaft 61 moving to the right, the arc ball 611 is driven to move. When the arc ball 611 moves to contact the extrusion ball 733, the extrusion ball 733 is stressed and pushes the spring 74 to deform through the fixed rod 732. The guide rod 731 slides inside the guide block 73. Through the reaction force generated by the spring 74, an acting force is applied to the arc ball 611, so as to avoid the edge material from breaking due to the too fast moving speed of the connecting shaft 61, affecting the conveying of the edge material, and improving the conveying stability.

[0044] The telescopic joint 62 has elasticity;

[0045] Example 1:

[0046] When the arc ball 611 contacts and squeezes the extrusion ball 733, the connecting shaft 61 is stressed. At the same time, the arc ball 611 is pressed above the extrusion ball 733. As Figure 5 shown, the telescopic joint 62 is stretched and deformed, so that the guide wheel 6 moves upward slightly. After that, the arc ball 611 reaches between the two extrusion balls 733, and through the elastic reset of the telescopic joint 62, the guide wheel 6 moves up and down slightly. When the guide wheel 6 conveys the cut material, when the cut material breaks away from the limit groove 8, it can be bounced to re-enter the limit groove 8, so that the cut material is always located in the limit groove 8, maintaining the guiding ability for the cut material, so as to improve the conveying efficiency of the cut material.

[0047] A threaded hole is provided on the right side of the tension chamber 7, and a threaded rod 75 is threadedly connected in the threaded hole;

[0048] In the initial state of the threaded rod 75, there is a gap between the left end thereof and the right side of the fixed rod 732, and both the left end of the threaded rod 75 and the right side of the fixed rod 732 have magnetism and the magnetic poles are the same. The spring 74 is sleeved outside the threaded rod 75;

[0049] Embodiment Two:

[0050] When the transmission speed of the cut material is relatively fast, the motor 72 rotates forward and backward alternately at a high speed, so that the tightening speed is increased, which can further prevent the cut material from breaking and provide relatively stable transmission. At this time, the operator can rotate the threaded rod 75, making it rotate and move to the left side at the same time. The magnetic repulsion force at the left end of the threaded rod 75 pushes the fixed rod 732 to displace to the left side, and the spring 74 is deformed under the tensile force. When the arc ball 611 and the extrusion ball 733 are in contact with and extrude each other, the fixed rod 732 is stressed to the right side, and the acting force of the spring 74 on the arc ball 611 in the reverse deformation is small, so that the buffer strength is relatively reduced, avoiding the occurrence of insufficient tension, thus preventing the cut material from separating from the guide wheel 6. At the same time, through the magnetic repulsion force, a certain buffer can be exerted on the connecting shaft 61, which can not only ensure the buffer effect, but also avoid the poor stability when the guide wheel 6 moves to the right side to increase the tension, thereby affecting the side material transmission effect.

[0051] The rotation mode of the motor 72 is to rotate clockwise for N turns and then rotate counterclockwise for N turns.

[0052] The number of forward and reverse rotation turns N of the motor 72 includes five and ten. When the number of forward and reverse rotation turns N of the motor 72 is ten, the threaded rod 75 rotates slightly;

[0053] When the number of forward and reverse rotation turns N of the motor 72 is five, the threaded rod 75 rotates a large amount, and the initial position of the arc ball 611 is located in the middle of the six extrusion balls 733;

[0054] Embodiment Three:

[0055] By controlling the number of forward and reverse rotation turns of the motor 72, the amplitude of the reciprocating movement of the guide wheel 6 is controlled, and thus the tension size is controlled. When the winding speed is relatively fast, the cut material is not easily separated from the guide wheel 6. At this time, the number of forward and reverse rotation turns of the motor 72 is five, and the amplitude of the reciprocating movement of the guide wheel 6 is small, that is, the speed is increased. On the one hand, the tension can be ensured, and on the other hand, when the energy consumption of the motor 72 does not increase, the reciprocating movement frequency of the guide wheel 6 can be increased, thereby ensuring the conveying quality of the side material;

[0056] At this time, the reciprocating movement of the guide wheel 6 and the up and down jumping of the guide wheel 6 need to be buffered. By rotating the threaded rod 75, the arc ball 611 is rotated until it is located in the middle of the six squeezing balls 733, so that the arc ball 611 can contact the squeezing ball 733 whether it moves left or right, so that the guide wheel 6 keeps jumping and the reciprocating movement is buffered, which fully avoids the edge material from breaking or falling off and causing the interruption of transportation. When the guide wheel 6 moves back and forth at a high speed, the edge material can be kept in the limit groove 8, providing efficient and stable transmission;

[0057] The overall device has a simple structure and low manufacturing cost.

[0058] In the description of the present invention, it is necessary to understand that the terms "up", "down", "front", "back", "left", "right", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0059] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the above embodiments, a person skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some of the technical features can be replaced by equivalents, and these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A preparation device for a TPEE three-layer co-extruded polyester light-shielding film, comprising a preparation production line, characterized in that: The preparation production line is arranged in a straight line, and includes a chilled water unit, a triple-dehumidification and vacuum drying unit, three hoppers A, B, and C, three sets of screws, a distributor, a die, a rubber roller section, a pattern roller section, a peeling roller section, a bottom plate, a corona machine, a traction and trimming roller section, a trimming crusher, a flattening olive roller, a constant tension device, and a winding and roll-changing section. The raw materials with different indexes of the three sets of screws are input into a special extrusion die through the distributor to form a film. The triple-dehumidification and vacuum drying unit is connected to the three hoppers A, B, and C through pipelines. The chilled water unit is connected to the rubber roller section through two pipelines, one is the water inlet pipe and the other is the water outlet pipe. The trimming crusher is located on one side of the traction and trimming roller section and is used for trimming and collecting the edges and crushing the edge materials. The trimming crusher is connected to the hopper B by a crushed material air duct.

2. The preparation process of a preparation device for a TPEE three-layer co-extruded polyester light-shielding film. According to the preparation device for a TPEE three-layer co-extruded polyester light-shielding film described in claim 1, it is characterized in that: The preparation process includes the following steps: Step S1: The equipment layout structure is arranged in a straight line. The modified raw materials pre-prepared by TPEE are circularly introduced through the triple-dehumidification and vacuum drying unit. Corresponding to the three sets of extruders, it automatically sucks and feeds the materials, continuously feeds and dries the materials through the triple-dehumidification and vacuum drying unit, and then continuously and quantitatively introduces them into the three hoppers A, B, and C in real time. Step S2: The materials enter the screw and are heated to the required processing temperature by the screw, and then are extruded. The three layers are co-extruded corresponding to the screw. The middle and bottom layers are light-shielding layers, and the surface layer is a coloring layer. Step S3: The chilled water unit introduces cooling water into the peeling roller. The extruded materials enter the interface between the die and the rubber roller. The chilled water unit uses a triple form to introduce cooling water into the peeling roller section, and the pattern roller section and the rubber roller section are pressed against each other. Step S4: It is introduced into the traction and trimming roller section through the corona machine for the next stage, and at the same time, the edges are trimmed. The edge materials are crushed by the trimming crusher, and then are sent back to the hopper B through the pneumatic conveying system and the crushed material air duct. After being flattened by the constant tension device and the flattening olive roller, it enters the winding and roll-changing section for automatic length measurement and automatic film cutting. Step S5: Coiling, dropping the coil, packaging, putting on the shelf, and warehousing. Step S6: After the co-extruded film is prepared, it is equipped with a TPEE hot-melt adhesive cloth-plastic composite device. At the same time, the pre-woven, dyed and finished PET polyester fabric is put on the constant tension fabric spreading frame. After gluing through the gluing die, it is compounded with the constant tension film, flattened and wound up, that is, a multi-functional cloth-plastic composite fabric is formed, thus achieving the energy-saving and environmental protection purpose of 100% recyclable crushing and granulation regeneration after use.

3. The preparation process of a preparation device for a TPEE three-layer co-extruded polyester light-shielding film according to claim 2, characterized in that: The traction and trimming roller section in the step S4 includes two bases (1), a roller one (2), a roller two (3), a roller three (4), a cutter (5), two guide wheels (6), and a tension cavity (7). The trimming crusher is provided with a winding shaft, and the cut materials are collected into the trimming crusher through the two guide wheels (6) and the winding shaft. The first roller (2), the second roller (3) and the third roller (4) are all axially connected between two bases (1). The second roller (3) and the third roller (4) are arranged opposite to each other up and down and press the light-shielding film. The first roller (2) is located on the left side of the third roller (4), and the light-shielding film is located on the surface of the first roller (2). The cutter (5) is fixedly installed between the two bases (1) and is located above the first roller (2). The tension cavity (7) is fixedly installed above one of the bases (1) and is located on the right side of the third roller (4). One of the guide wheels (6) is installed by bearing above the front base (1), and the bottom end of the other guide wheel (6) is installed by bearing on the connecting shaft (61). The lower end of the connecting shaft (61) is fixed with a telescopic joint (62). The lower end of the telescopic joint (62) is fixedly connected to a connecting rod (63). The bottom end of the connecting rod (63) is fixed with a slider (64). The inner wall bottom of the tension cavity (7) is fixed with a slide rail (71) and a motor (72). The slider (64) is slidably connected to the inner wall of the slide rail (71). The output end of the motor (72) is fixedly connected with a gear (721). One side of the connecting rod (63) is fixed with a toothed plate (631), and the toothed plate (631) meshes with the gear (721).

4. The preparation process of a preparation device for a TPEE three-layer co-extruded polyester light-shielding film according to claim 3, characterized in that: One side of the connecting shaft (61) is fixed with an arc ball (611). The right side of the inner wall of the tension cavity (7) is fixed with a guide block (73). The inner wall of the guide block (73) is slidably connected with a guide rod (731). The left end of the guide rod (731) is fixed with a fixed rod (732). Six extrusion balls (733) are evenly fixed on one side of the fixed rod (732). A spring (74) is fixed between the right side of the fixed rod (732) and the right side of the inner wall of the tension cavity (7). After the connecting shaft (61) moves, the arc ball (611) contacts the extrusion balls (733).

5. The preparation process of a preparation device for a TPEE three-layer co-extruded polyester light-shielding film according to claim 4, characterized in that: The telescopic joint (62) has elasticity.

6. The preparation process of a preparation device for a TPEE three-layer co-extruded polyester light-shielding film according to claim 5, characterized in that: A threaded hole is formed on the right side of the tension cavity (7), and a threaded rod (75) is threadedly connected in the threaded hole. In the initial state of the threaded rod (75), there is a gap between the left end of the threaded rod (75) and the right side of the fixed rod (732). Both the left end of the threaded rod (75) and the right side of the fixed rod (732) have magnetism and the magnetic poles are the same. The spring (74) is sleeved on the outer side of the threaded rod (75).

7. The preparation process of a preparation device for a TPEE three-layer co-extruded polyester light-shielding film according to claim 6, characterized in that: The rotation mode of the motor (72) is that after rotating clockwise for N turns, it rotates counterclockwise for N turns.

8. The preparation process of a preparation device for a TPEE three-layer co-extruded polyester light-shielding film according to claim 7, characterized in that: The number of clockwise and counterclockwise rotation turns N of the motor (72) includes five and ten. When the number of clockwise and counterclockwise rotation turns N of the motor (72) is ten, the threaded rod (75) rotates slightly. When the number of clockwise and counterclockwise alternating rotation turns N of the motor (72) is five, the threaded rod (75) rotates a large amount, and the initial position of the arc ball (611) is located in the middle of the six extrusion balls (733).

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