Laminating device with pre-cleaning function for lamp box fabric production

Abstract

The invention discloses a press-fit device with a pre-cleaning function for lamp-box fabric production, and relates to the technical field of lamp-box fabric press-fit, the press-fit device is used for press-fit of lamp-box fabric raw materials, the press-fit device comprises a supporting mechanism, a pre-cleaning mechanism, a press-fit machine body, a double-press-fit mechanism and a cooling mechanism, the supporting mechanism is connected with the pre-cleaning mechanism, and the pre-cleaning mechanism is connected with the press-fit machine body. The supporting mechanism is connected with the pressing machine body, the supporting mechanism is connected with the double-pressing mechanism, the supporting mechanism is connected with the cooling mechanism, the pressing machine body is connected with the double-pressing mechanism, the supporting mechanism comprises a supporting bottom plate, a supporting frame and three raw material winding rollers, and the end, away from the supporting bottom plate, of the supporting frame is rotationally connected with the three raw material winding rollers.

Description

Technical Field

[0001] The invention relates to the technical field of light box cloth pressing, in particular to a light box cloth production pressing device with a pre-cleaning function. Background Art

[0002] Light box cloth is a material widely used in advertising, display and decoration. It is mainly composed of fiber-reinforced materials and tough polymer matrix. In the production process, in order to improve the quality and performance of light box cloth, a variety of post-processing methods are usually used, such as lamination, knife scraping and calendering. Among them, lamination is the mainstream process of light box cloth production. Through heating and the pressure of hot rollers, the upper and lower layers of PVC film and the middle light-guiding fiber mesh are bonded together, and then cooled to form.

[0003] In the process of making light box cloth, the raw materials are usually sent directly from the rollers on which they are placed to the laminating machine for laminating operation. When the raw materials are placed for a long time or just produced, they may be contaminated with debris, dust and other impurities on the surface. If they are directly pressed, the quality of the finished light box cloth may be affected, such as reduced light transmittance. At the same time, during the hot pressing process, when the rectangular groove in the light box cloth is pressed down, the stretching speeds in the middle and four sides of the rectangle are inconsistent, and the stretching is mainly on the four sides, and uniform stretching cannot be achieved, which may affect the finished light box cloth. Summary of the invention

[0004] The object of the present invention is to provide a pressing device for producing light box cloth with a pre-cleaning function to solve the problems raised in the prior art.

[0005] To achieve the above object, the present invention provides the following technical solutions: The pressing device presses the light box cloth raw material, and the pressing device includes a supporting mechanism, a pre-cleaning mechanism, a pressing body, a double pressing mechanism and a cooling mechanism. The supporting mechanism is connected to the pre-cleaning mechanism, the supporting mechanism is connected to the pressing body, the supporting mechanism is connected to the double pressing mechanism, the supporting mechanism is connected to the cooling mechanism, and the pressing body is connected to the double pressing mechanism.

[0006] In the laminating device, the supporting mechanism serves as the basis of the entire device and is used to support other mechanisms. The pre-cleaning mechanism is used to clean the light box cloth raw materials in advance to prevent debris and dust on the light box cloth raw materials from being pressed together with the light box cloth raw materials and affecting the quality of the finished light box cloth. The laminating machine body is used to perform preliminary laminating and overlapping of the light box cloth raw materials. Because the light box cloth is composed of three layers: PVC film, light guide fiber net and PVC film, it needs to be preliminarily pressed before hot pressing to avoid offset or inadequate pressing during later hot pressing. At the same time, the laminating machine body also provides a place for hot pressing of the light box cloth raw materials, so that the entire laminating step can be completed in the laminating machine body. The double laminating mechanism uses soft and hard pressing to better press the raised and recessed areas on the surface without damaging the internal light guide fiber net. The cooling mechanism quickly cools the light box cloth that has been hot pressed to facilitate winding.

[0007] Furthermore, the supporting mechanism includes a supporting base plate, a supporting frame and a raw material roll. There are three raw material rolls. The end of the supporting frame away from the supporting base plate is rotatably connected to the three raw material rolls. The light box cloth raw materials are wound on the raw material rolls. The three raw material rolls are arranged longitudinally. The three raw material rolls are PVC film, light guide fiber net, and PVC film from top to bottom respectively. The supporting base plate is connected to the pre-cleaning mechanism, the supporting base plate is connected to the laminating body, the supporting base plate is connected to the double laminating mechanism, and the supporting base plate is connected to the cooling mechanism.

[0008] In the supporting mechanism, this mechanism is used to provide a supporting foundation for other mechanisms and to unwind the light box cloth raw materials. The supporting base plate is used to support the entire laminating device. The supporting frame is placed on the supporting base plate and is used to fix the raw material rolls. There are three raw material rolls, which are all rotatably connected to the supporting frame. The centers of the three raw material rolls are all on the same vertical line. PVC film, light guide fiber net, and PVC film are respectively wound from top to bottom. In the subsequent laminating process, the structure of the light box cloth is composed of three layers of PVC film, light guide fiber net, and PVC film, which can facilitate subsequent laminating.

[0009] Furthermore, the pre-cleaning mechanism includes a fan, a ventilation duct and an air outlet. The fan is firmly connected to the supporting base plate, the fan is firmly connected to the ventilation duct, the end of the ventilation duct away from the fan is firmly connected to the air outlet, the cross-section of the air outlet is rectangular, and the air outlet is placed vertically.

[0010] In the pre-cleaning mechanism, this mechanism is used to pre-clean the three layers of raw materials, namely, PVC film, light guide fiber net, and PVC film output by the raw material roll. The light box cloth raw material will inevitably be contaminated with dust, debris and other impurities when it is placed for a long time or just produced. If it is not cleaned, the light box cloth raw material is directly pressed, which may affect the quality of the finished light box cloth. Therefore, the light box cloth raw material is pre-cleaned before it is pressed. The fan is placed on the supporting bottom plate, and the wind generated by the fan is transmitted to the air outlet through the ventilation pipe, and then sent out by the air outlet. The air outlet is placed vertically, which can better clean the three layers of light box cloth raw material and blow impurities on the light box cloth raw material away from the light box cloth raw material.

[0011] Furthermore, the laminating machine body includes a laminating shell, a first driving motor, a driven gear bar and an initial pressing roller. The laminating shell is tightly connected to the supporting base plate. A laminating cavity is provided in the laminating shell. A feed port and a discharge port are provided on the laminating shell. The initial pressing roller is placed in the laminating cavity. Two initial pressing rollers are provided. The two initial pressing rollers are placed at the feed port. The two initial pressing rollers are rotatably connected to the wall of the laminating cavity respectively. The two initial pressing rollers are placed on the same vertical line. The two initial pressing rollers are connected through a driven gear bar. The first driving motor is tightly connected to the outer wall of the laminating cavity. An initial pressing roller is tightly connected to the output end of the first driving motor. The laminating shell is connected to the double laminating mechanism, and the laminating cavity is connected to the double laminating mechanism.

[0012] In the laminating machine body, the device is used to perform preliminary laminating on the light box cloth raw materials, so that the three light box cloth raw materials placed on the three raw material rolls can be initially stacked together. At the same time, the laminating machine body also provides a laminating place for the subsequent hot laminating of the light box cloth raw materials. The laminating shell is the basis of the entire laminating machine body, and a laminating cavity is arranged inside. The initial laminating roller is placed in the laminating cavity. The initial laminating roller is placed at the feeding port of the laminating shell. The initial laminating roller is used to perform preliminary laminating on the three-layer light box cloth raw materials. There are two initial laminating rollers. Laminating is performed by placing two initial laminating rollers up and down at the feeding port. The first driving motor drives one initial laminating roller. The two initial laminating rollers are connected by a driven gear bar. After one initial laminating roller is driven by the first driving motor, the other initial laminating roller can be rotated by the driven gear bar. After the device is started, the three-layer light box cloth raw materials reach the feeding port of the laminating shell from the raw material roll, pass through the two initial laminating rollers and enter the laminating cavity, and then perform hot pressing operation.

[0013] Furthermore, the double pressing mechanism includes a hard pressing device, which is connected to the supporting bottom plate, and the hard pressing device is connected to the pressing chamber. The hard pressing device includes a hard pressing upper roller, a hard pressing lower roller and an electric heating wire. The hard pressing upper roller is placed in the pressing chamber, and the hard pressing lower roller is placed in the pressing chamber. Two rotating holes are provided in the vertical direction on one side wall of the pressing chamber. One end of the hard pressing upper roller is rotatably connected to the inner wall of the pressing chamber, and the other end of the hard pressing upper roller is rotatably connected to the pressing chamber through the upper rotating hole, and one end of the hard pressing lower roller is rotatably connected to the inner wall of the pressing chamber, and the other end of the hard pressing lower roller is rotatably connected to the pressing chamber through the lower rotating hole. The hard pressing device is dynamically connected, the distance between the hard pressing upper roller and the hard pressing lower roller is the sum of the thicknesses of the PVC film, the fiber part of the light guide fiber net, and the PVC film. Electric heating wires are arranged in the hard pressing upper roller and the hard pressing lower roller. The hard pressing device also includes a second driving motor, a first gear and a second gear. The hard pressing upper roller is fastened to the first gear through one end of the upper rotating hole, and the hard pressing lower roller is fastened to the second gear through one end of the lower rotating hole. The second driving motor is fastened to the supporting bottom plate, and the output end of the second driving motor is fastened to the hard pressing upper roller, and the first gear and the second gear are meshed.

[0014] In the double pressing mechanism, the mechanism is used to heat press the light box cloth raw material. In the double pressing mechanism, because the light guide fiber net in the light box cloth raw material is not a fully covered raw material like the PVC film, the light guide fiber net is a net-shaped light guide fiber combination, and the part without fiber is rectangular. The hard pressing device is used to heat press the part with fiber. Therefore, the distance between the hard pressing upper roller and the hard pressing lower roller is the sum of the thickness of the PVC film, the fiber part of the light guide fiber net, and the PVC film. In this way, in the process of hard pressing, not only the light box cloth raw material can be initially The hard pressing upper roller is driven to rotate by the second driving motor, the first gear is tightly connected to the hard pressing upper roller, and the second gear is tightly connected to the hard pressing lower roller, the first gear and the second gear are meshed, when the hard pressing upper roller rotates, it will rotate with the first gear, and the first gear will rotate with the meshed second gear, so that the hard pressing lower roller rotates together, and at the same time, the heating wire is energized and heated, so that the surface of the hard pressing upper roller and the hard pressing lower roller has a certain amount of heat to perform hot pressing on the light box cloth raw material.

[0015] Furthermore, the double pressing mechanism also includes a soft pressing device, which is connected to the supporting base plate, and the soft pressing device is connected to the pressing chamber. The soft pressing device includes a third driving motor, a soft pressing lower roller, and a soft pressing upper roller. The soft pressing lower roller is rotatably connected to the pressing chamber, and the soft pressing upper roller is rotatably connected to the pressing chamber. The third driving motor is tightly connected to the supporting base plate, and the output end of the third driving motor is tightly connected to the soft pressing upper roller. The soft pressing upper roller and the soft pressing lower roller are connected through a driving gear transmission. A number of rectangular protrusions are provided on the soft pressing upper roller. The soft pressing lower roller is a smooth rolling roller. Electric heating wires are provided in the rectangular protrusions of the soft pressing upper roller. The roughness of the rectangular protrusions of the soft pressing upper roller decreases from the middle to the surrounding area.

[0016] In the soft pressing device, the device performs heat pressing on the rectangular part without fibers in the optical fiber web in the raw material of the light box cloth and the corresponding two layers of PVC film. There are several rectangular protrusions on the soft pressing upper roller, and the size of each protrusion is just the size of the part without fibers in the optical fiber web. A heating wire is arranged in the protrusion, and when it is energized during operation, the surface of the soft pressing upper roller is heated to facilitate heat pressing. The soft pressing lower roller is a smooth roller, and the distance between the soft pressing lower roller and the protrusion of the soft pressing upper roller is the sum of the thicknesses of the two layers of PVC film. In this way, soft pressing will not affect the part with fibers in the optical fiber web. At the same time, the roughness on the protrusion of the soft pressing upper roller is not uniform. Under normal circumstances, the roughness of the downward pressing is consistent. However, the soft pressing here is performed on the part without fibers in the optical fiber web. Prior to this, the part with fibers has been preliminarily pressed. Then, the soft pressing is performed. In the process of the protrusion pressing down on the rectangular part, the four sides are mainly stretched downward, while the PVC film inside the rectangle is rarely stretched, which will cause the stretching speed of each part to be inconsistent. It may affect the subsequent use of the light box cloth, so the bump is set to have a large roughness in the middle and a small roughness on the four sides, and the roughness of the bump decreases from the middle to the surrounding areas. In this way, during the hot pressing process of the soft pressing upper roller and the soft pressing lower roller, the cam will pass through the rectangular part of the light-guiding fiber network without fibers, and will first contact the edge of the cam and the edge of the rectangle. Here, the roughness of the cam is the smallest on the entire cam, so it will rotate faster. During the rotation of the soft pressing upper roller, the contact point between the cam and the rectangular part keeps changing, from the edge of the rectangle to the middle of the rectangle. In this process, the roughness of the cam gradually increases, and the friction between the two also gradually increases. Therefore, during the rotation process, the part where the cam and the rectangle are in contact has different residence times due to different friction forces. The friction force is the largest in the middle and the residence time is the longest. The soft pressing upper roller continues to rotate, and the contact surface between the cam and the rectangular part moves from the middle to the edge, and the roughness and friction decrease. This design controls the drawing speed by controlling the roughness, so that the stretching speed of the rectangular part is consistent and the stretching is uniform.

[0017] Furthermore, the cooling mechanism includes a cooling water tank, a water supply pipe, a cooling roller and a cooling pipe. The cooling water tank is tightly connected to the supporting base plate, the cooling water tank and the water supply pipe are tightly connected, the other end of the water supply pipe is connected to the cooling roller, the cooling roller is connected to the supporting base plate, the cooling pipe is connected to the cooling roller, the cooling roller includes a cooling layer and a roller wall, the cooling layer and the cylindrical hollow structure, the cooling layer and the roller wall are fitted, the water supply pipe is connected to the cooling layer, the water supply pipe is rotatably connected to the roller wall, the roller wall and the supporting base plate are connected through a support rod, the roller wall and the support rod are rotatably connected, the cooling pipe is connected to the cooling layer, the cooling pipe is rotatably connected to the roller wall, and the end of the cooling pipe away from the cooling layer is connected to the cooling water tank.

[0018] In the cooling mechanism, this mechanism is used to cool the light box cloth that has been heat-pressed to facilitate winding. The cooling water tank provides cooling water, which is transported to the cooling layer through the water pipe. The heated cooling water then flows out through the cooling pipe. In the cooling pipe, the temperature of the cooling water decreases and then returns to the cooling water tank. When the light box cloth moves on the cooling roller, the roller wall will rotate, while the internal cooling layer will not rotate. In this way, the water pipe and the cooling pipe will not self-entangle during rotation. After the device is started, the water in the cooling water tank is transported to the cooling layer through the water pipe. When the light box cloth passes through the cooling roller, heat exchange occurs with the cooling water in the cooling layer. The temperature of the cooling water in the cooling layer increases, and the surface temperature of the light box cloth decreases, which is convenient for winding. The heated cooling water in the cooling layer flows out through the cooling pipe and is cooled again in the process of flowing back to the cooling water tank, which is convenient for reuse.

[0019] Compared with the prior art, the beneficial effects of the present invention are as follows: after the device is started, the light box cloth raw material on the raw material roll begins to be delivered, and the fan is continuously started, and the generated wind is delivered through the air outlet nozzle to blow the impurities on the light box cloth raw material away from the light box cloth raw material, and then preliminary pressing is performed through the initial pressing roller, and then hard pressing is performed. The distance between the hard pressing upper roller and the hard pressing lower roller is the sum of the thicknesses of the PVC film, the fiber part of the light guide fiber net, and the PVC film. During the hot pressing process, the fiber part of the light guide fiber net will not be damaged due to excessive pressure; soft pressing is performed after the fiber part has been initially pressed, and then the fiber-free part of the light guide fiber net is pressed. In the process of pressing down the rectangular part, mainly the four sides are stretched downward, while the PVC film inside the rectangle is rarely stretched, which will result in inconsistent stretching speeds of various parts, which may affect the subsequent use of the light box cloth. Therefore, the bumps are set to have a large roughness in the middle and a small roughness on the four sides, and the roughness of the bumps is from the middle to the Decreasing around, during the hot pressing process of the soft pressing upper roller and the soft pressing lower roller, the cam will pass through the rectangular part of the light-guiding fiber net without fibers, and will first contact the edge of the cam and the edge of the rectangle. The roughness of the cam here is the smallest on the entire cam and will rotate faster. During the rotation of the soft pressing upper roller, the contact point between the cam and the rectangular part keeps changing, from the edge of the rectangle to the middle of the rectangle. In this process, the roughness of the cam gradually increases, and the friction between the two also gradually increases. Therefore, during the rotation process, the part where the cam and the rectangle are in contact has different residence times due to different friction forces. The friction force is the largest in the middle and the residence time is also the longest. The soft pressing upper roller continues to rotate, and the contact surface between the cam and the rectangular part moves from the middle to the edge, and the roughness decreases, and the friction decreases. This design controls the drawing speed by controlling the roughness, so that the stretching speed of the rectangular part is consistent and the stretching is uniform. Then the finished light box cloth is cooled by the cooling mechanism for easy winding. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a front view of the present invention; Figure 3 It is a transverse cross-sectional view of the present invention; Figure 4 for Figure 3 Enlarged view of part A; Figure 5 It is a partial schematic diagram of the surface of the pressed shell of the present invention; Figure 6 It is a schematic diagram of the soft pressing upper roller and the soft pressing lower roller of the present invention; Figure 7 It is a schematic diagram of the soft pressing device of the present invention; Figure 8 It is a transverse cross-sectional view of the cooling mechanism of the present invention.

[0021] In the figure: 1. Raw material of light box cloth; 2. Support mechanism; 21. Support bottom plate; 22. Support frame; 23. Raw material roll; 3. Pre-cleaning mechanism; 31. Fan; 32. Ventilation pipe; 33. Air outlet; 4. Pressing body; 41. Pressing shell; 411. Pressing cavity; 412. Feeding port; 413. Feeding port; 42. First driving motor; 43. Driven gear bar; 44. Initial pressing roller; 5. Double pressing mechanism; 51. Hard pressing device; 511, hard pressing upper roller; 512, hard pressing lower roller; 513, second drive motor; 514, first gear; 515, second gear; 52, soft pressing device; 521, third drive motor; 522, soft pressing lower roller; 523, soft pressing upper roller; 6, cooling mechanism; 61, cooling water tank; 62, water supply pipeline; 63, cooling roller; 631, cooling layer; 632, roller wall; 64, cooling pipeline. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] Example: Figure 1-Figure 8As shown, the present invention provides a technical solution for a laminating device for producing light box cloth with a pre-cleaning function. The laminating device presses the light box cloth raw material 1. The laminating device includes a supporting mechanism 2, a pre-cleaning mechanism 3, a laminating body 4, a double laminating mechanism 5 and a cooling mechanism 6. The supporting mechanism 2 is connected to the pre-cleaning mechanism 3, the supporting mechanism 2 is connected to the laminating body 4, the supporting mechanism 2 is connected to the double laminating mechanism 5, the supporting mechanism 2 is connected to the cooling mechanism 6, and the laminating body 4 is connected to the double laminating mechanism 5.

[0024] In the laminating device, the supporting mechanism 2 serves as the basis of the entire device and is used to support other mechanisms. The pre-cleaning mechanism 3 is used to clean the light box cloth raw material 1 in advance to prevent debris and dust on the light box cloth raw material 1 from being pressed together with the light box cloth raw material 1 and affecting the quality of the finished light box cloth. The laminating machine body 4 is used to perform preliminary laminating and overlapping of the light box cloth raw material 1. Because the light box cloth is composed of three layers: PVC film, light guide fiber net and PVC film, it needs to be preliminarily pressed before hot pressing to avoid offset or inadequate pressing during later hot pressing. At the same time, the laminating machine body 4 also provides a place for hot pressing the light box cloth raw material 1, so that the entire laminating step can be completed in the laminating machine body 4. The double laminating mechanism 5 uses soft and hard pressing to better press the raised and recessed areas on the surface without damaging the internal light guide fiber net. The cooling mechanism 6 quickly cools the light box cloth that has been hot pressed to facilitate winding.

[0025] The supporting mechanism 2 includes a supporting base plate 21, a supporting frame 22 and a raw material roller 23. Three raw material rollers 23 are provided. One end of the supporting frame 22 away from the supporting base plate 21 is rotatably connected to the three raw material rollers 23. The light box cloth raw material 1 is wound on the raw material roller 23. The three raw material rollers 23 are arranged longitudinally. The three raw material rollers 23 are PVC film, light guide fiber net, and PVC film from top to bottom respectively. The supporting base plate 21 is connected to the pre-cleaning mechanism 3, the supporting base plate 21 is connected to the laminating body 4, the supporting base plate 21 is connected to the double laminating mechanism 5, and the supporting base plate 21 is connected to the cooling mechanism 6.

[0026] In the support mechanism 2, this mechanism is used to provide a supporting foundation for other mechanisms and to unwind the light box cloth raw material 1. The support base plate 21 is used to support the entire laminating device. The support frame 22 is placed on the support base plate 21 and is used to fix the raw material roll 23. There are three raw material rolls 23, which are all rotatably connected to the support frame 22. The centers of the three raw material rolls 23 are all on the same vertical line. PVC film, light guide fiber mesh, and PVC film are respectively wound from top to bottom. In the subsequent laminating process, the structure of the light box cloth is composed of three layers of PVC film, light guide fiber mesh, and PVC film, which can facilitate subsequent laminating.

[0027] The pre-cleaning mechanism 3 includes a fan 31, a ventilation pipe 32 and an air outlet 33. The fan 31 is firmly connected to the supporting base plate 21, the fan 31 is firmly connected to the ventilation pipe 32, the end of the ventilation pipe 32 away from the fan 31 is firmly connected to the air outlet 33, the cross-section of the air outlet 33 is rectangular, and the air outlet 33 is placed vertically.

[0028] In the pre-cleaning mechanism 3, the mechanism is used to pre-clean the three layers of raw materials, namely, PVC film, light guide fiber mesh, and PVC film output by the raw material roller 23. The light box cloth raw material 1 will inevitably be contaminated with dust, debris and other impurities when it is placed for a long time or just produced. If it is not cleaned, the light box cloth raw material 1 is directly pressed, which may affect the quality of the finished light box cloth. Therefore, the light box cloth raw material 1 is pre-cleaned before it is pressed. The fan 31 is placed on the supporting base plate 21, and the wind generated by the fan 31 is transmitted to the air outlet 33 through the ventilation pipe 32, and then sent out by the air outlet 33. The air outlet 33 is placed vertically, which can better clean the three layers of light box cloth raw material 1 and blow impurities on the light box cloth raw material 1 away from the light box cloth raw material 1.

[0029] The laminating machine body 4 includes a laminating shell 41, a first driving motor 42, a driven gear bar 43 and an initial pressing roller 44. The laminating shell 41 is tightly connected to the supporting base plate 21. A laminating chamber 411 is provided in the laminating shell 41. A feeding port 412 and a discharging port 413 are provided on the laminating shell 41. The initial pressing roller 44 is placed in the laminating chamber 411. Two initial pressing rollers 44 are provided. The two initial pressing rollers 44 are placed at the feeding port 412. The two initial pressing rollers 44 are rotatably connected to the wall of the laminating chamber 411 respectively. The two initial pressing rollers 44 are placed on the same vertical line. The two initial pressing rollers 44 are transmission connected through the driven gear bar 43. The first driving motor 42 is tightly connected to the outer wall of the laminating chamber 411. An initial pressing roller 44 is tightly connected to the output end of the first driving motor 42. The laminating shell 41 is connected to the double laminating mechanism 5, and the laminating chamber 411 is connected to the double laminating mechanism 5.

[0030] In the laminating machine body 4, the device is used to perform preliminary laminating on the light box cloth raw material 1, so that the three light box cloth raw materials 1 placed on the three raw material rolls 23 can be initially stacked together. At the same time, the laminating machine body 4 also provides a laminating place for the subsequent hot laminating of the light box cloth raw materials 1. The laminating shell 41 is the basis of the entire laminating machine body 4, and is provided with a laminating cavity 411. The initial laminating roller 44 is placed in the laminating cavity 411. The initial laminating roller 44 is placed at the feed port 412 of the laminating shell 41. The initial laminating roller 44 is used to perform preliminary laminating on the three-layer light box cloth raw material 1. The initial laminating roller 44 has two The lamination is performed by placing two initial pressing rollers 44 above and below at the feed port 412. The first drive motor 42 drives an initial pressing roller 44. The two initial pressing rollers 44 are connected by a driven gear bar 43. After one initial pressing roller 44 is driven by the first drive motor 42, the other initial pressing roller 44 can be rotated by the driven gear bar 43. After the device is started, the three-layer light box cloth raw material 1 reaches the feed port 412 of the lamination shell 41 from the raw material roll 23, passes through the two initial pressing rollers 44 and enters the lamination chamber 411, and then the hot pressing operation is performed.

[0031] The double pressing mechanism 5 includes a hard pressing device 51, which is connected to the supporting bottom plate 21, and is connected to the pressing chamber 411. The hard pressing device 51 includes a hard pressing upper roller 511, a hard pressing lower roller 512 and an electric heating wire. The hard pressing upper roller 511 is placed in the pressing chamber 411, and the hard pressing lower roller 512 is placed in the pressing chamber 411. Two rotating holes are provided on one side wall of the pressing chamber 411 in the vertical direction. One end of the hard pressing upper roller 511 is rotatably connected to the inner wall of the pressing chamber 411, and the other end of the hard pressing upper roller 511 is rotatably connected to the pressing chamber 411 through the upper rotating hole, and one end of the hard pressing lower roller 512 is rotatably connected to the inner wall of the pressing chamber 411, and the other end of the hard pressing lower roller 512 is connected to the pressing chamber 411 through the lower rotating hole. Rotating connection, the distance between the hard pressing upper roller 511 and the hard pressing lower roller 512 is the sum of the thickness of the three layers of PVC film, the fiber part of the light guide fiber mesh, and the PVC film. Electric heating wires are arranged in the hard pressing upper roller 511 and the hard pressing lower roller 512. The hard pressing device 51 also includes a second driving motor 513, a first gear 514 and a second gear 515. The hard pressing upper roller 511 is fastened to the first gear 514 through one end of the upper rotating hole, and the hard pressing lower roller 512 is fastened to the second gear 515 through one end of the lower rotating hole. The second driving motor 513 is fastened to the supporting bottom plate 21, and the output end of the second driving motor 513 is fastened to the hard pressing upper roller 511, and the first gear 514 and the second gear 515 are meshed.

[0032] In the double pressing mechanism 5, the mechanism is used to perform heat pressing on the light box cloth raw material 1. In the double pressing mechanism 5, because the light guide fiber net in the light box cloth raw material 1 is not a fully covered raw material like the PVC film, the light guide fiber net is a net-shaped light guide fiber combination, and the part without fibers is rectangular. The hard pressing device 51 is used for heat pressing the parts with fibers. Therefore, the distance between the hard pressing upper roller 511 and the hard pressing lower roller 512 is the sum of the thickness of the PVC film, the fiber part of the light guide fiber net, and the PVC film. In this way, during the hard pressing process, not only can the light box cloth raw material 1 be initially pressed, but also the light guide fiber net will not be damaged by heat pressing. There is fiber part that is damaged, the hard pressing upper roller 511 is driven to rotate by the second driving motor 513, the hard pressing upper roller 511 is fastened with a first gear 514, and the hard pressing lower roller 512 is fastened with a second gear 515, the first gear 514 and the second gear 515 are meshed, when the hard pressing upper roller 511 rotates, it will rotate with the first gear 514, the first gear 514 will rotate with the meshed second gear 515, so that the hard pressing lower roller 512 rotates together, and at the same time the electric heating wire is energized and heated, so that the surfaces of the hard pressing upper roller 511 and the hard pressing lower roller 512 have a certain amount of heat to perform hot pressing on the light box cloth raw material 1.

[0033] The double pressing mechanism 5 also includes a soft pressing device 52, which is connected to the supporting base plate 21, and the soft pressing device 52 is connected to the pressing chamber 411. The soft pressing device 52 includes a third driving motor 521, a soft pressing roller 522, and a soft pressing upper roller 523. The soft pressing roller 522 is rotatably connected to the pressing chamber 411, and the soft pressing upper roller 523 is rotatably connected to the pressing chamber 411. The third driving motor 521 is tightly connected to the supporting base plate 21, and the output end of the third driving motor 521 is tightly connected to the soft pressing upper roller 523. The soft pressing upper roller 523 and the soft pressing lower roller 522 are connected through a driving gear transmission. A plurality of rectangular protrusions are provided on the soft pressing upper roller 523. The soft pressing lower roller 522 is a smooth rolling roller. A heating wire is provided in the rectangular protrusion of the soft pressing upper roller 523, and the roughness of the rectangular protrusion of the soft pressing upper roller 523 decreases from the middle to the surrounding.

[0034] In the soft pressing device 52, the device performs heat pressing on the rectangular part without fibers in the light-guiding fiber net in the light box cloth raw material 1 and the corresponding two layers of PVC film. There are several rectangular protrusions on the soft pressing upper roller 523, and the size of each protrusion is just the size of the part without fibers in the light-guiding fiber net. An electric heating wire is arranged in the protrusion. When the power is turned on during operation, the surface of the soft pressing upper roller 523 is heated to facilitate heat pressing. The soft pressing lower roller 522 is a smooth roller. The distance between the protrusions of the soft pressing lower roller 522 and the soft pressing upper roller 523 is the sum of the thicknesses of the two layers of PVC film. , such soft pressing will not affect the part with fibers in the optical fiber web. At the same time, the roughness of the convex block of the soft pressing upper roller 523 is not uniform. Under normal circumstances, the roughness of the downward pressing is consistent. However, the soft pressing here is performed on the part without fibers in the optical fiber web. Before this, the part with fibers has been preliminarily pressed. When the convex block presses down on the rectangular part, the four sides are mainly stretched downward, while the PVC film inside the rectangle is rarely stretched, which will cause the stretching speed of each part to be Inconsistency may affect the subsequent use of the light box cloth. Therefore, the bump is set to have a large roughness in the middle and a small roughness on the four sides. The roughness of the bump decreases from the middle to the surrounding areas. In this way, during the hot pressing process of the soft pressing upper roller 523 and the soft pressing lower roller 522, the cam will pass through the rectangular part without fibers in the light-guiding fiber network, and first contact the edge of the cam and the edge of the rectangle. Here, the roughness of the cam is the smallest on the entire cam, so it will rotate faster. During the rotation of the soft pressing upper roller 523, the contact point between the cam and the rectangular part is constantly changing, from the edge of the rectangle to the middle of the rectangle. In this process, the roughness of the cam gradually increases, and the friction between the two also gradually increases. Therefore, during the rotation process, the part where the cam and the rectangle are in contact has different residence times due to different friction forces. The friction force is the largest in the middle and the residence time is also the longest. The soft pressing upper roller 523 continues to rotate, and the contact surface between the cam and the rectangular part moves from the middle to the edge, and the roughness decreases, and the friction decreases. This design controls the drawing speed by controlling the roughness, so that the stretching speed of the rectangular part is consistent and the stretching is uniform.

[0035] The cooling mechanism 6 includes a cooling water tank 61, a water delivery pipe 62, a cooling roller 63 and a cooling pipe 64. The cooling water tank 61 is tightly connected to the support base plate 21. The cooling water tank 61 is tightly connected to the water delivery pipe 62. The other end of the water delivery pipe 62 is connected to the cooling roller 63. The cooling roller 63 is connected to the support base plate 21. The cooling pipe 64 is connected to the cooling roller 63. The cooling roller 63 includes a cooling layer 631 and a roller wall 632. The cooling layer 631 and the cylindrical shaped hollow structure, the cooling layer 631 and the roller wall 632 are fitted together, the water pipe 62 and the cooling layer 631 are connected, the water pipe 62 and the roller wall 632 are rotatably connected, the roller wall 632 and the supporting bottom plate 21 are connected through the support rod, the roller wall 632 and the support rod are rotatably connected, the cooling pipe 64 and the cooling layer 631 are connected, the cooling pipe 64 and the roller wall 632 are rotatably connected, and the end of the cooling pipe 64 away from the cooling layer 631 is connected to the cooling water tank 61.

[0036] In the cooling mechanism 6, the mechanism is used to cool the light box cloth that has been heat-pressed to facilitate winding. The cooling water tank 61 provides cooling water, which is transported to the cooling layer 631 through the water pipe 62. The heated cooling water then flows out through the cooling pipe 64. In the cooling pipe 64, the temperature of the cooling water decreases and then returns to the cooling water tank 61. When the light box cloth moves on the cooling roller 63, the roller wall 632 rotates, while the internal cooling layer 631 does not rotate. In this way, when rotating, The water supply pipe 62 and the cooling pipe 64 will not be self-entangled. After the device is started, the water in the cooling water tank 61 is transported to the cooling layer 631 through the water supply pipe 62. When the light box cloth passes through the cooling roller 63, heat exchange occurs with the cooling water in the cooling layer 631. The temperature of the cooling water in the cooling layer 631 increases, and the surface temperature of the light box cloth decreases, which is convenient for winding. The heated cooling water in the cooling layer 631 flows out through the cooling pipe 64 and is cooled again in the process of flowing back to the cooling water tank 61, which is convenient for reuse.

[0037] Working principle of the present invention: after the device is started, the light box cloth raw material 1 on the raw material roll 23 begins to be sent out, and the wind generated by the fan 31 is sent out through the air outlet 33 to blow the impurities on the light box cloth raw material 1 away from the light box cloth raw material 1, and then it is preliminarily pressed by the initial pressing roller 44, and then hard pressing is performed. The distance between the hard pressing upper roller 511 and the hard pressing lower roller 512 is the sum of the thickness of the PVC film, the fiber part of the light guide fiber net, and the PVC film. During the hot pressing process, the fiber part of the light guide fiber net will not be damaged due to excessive pressure; soft pressing is to press the fiber-free part of the light guide fiber net after the fiber part has been preliminarily pressed. In the process of pressing down the rectangular part, the four sides are mainly stretched downward, while the PVC film inside the rectangle is rarely stretched. This will cause inconsistent stretching speeds of various parts, which may affect the subsequent use of the light box cloth. Therefore, the bump is set to have a large roughness in the middle and a small roughness on the four sides, and the roughness of the bump decreases from the middle to the surrounding areas. During the hot pressing process of the soft pressing upper roller 523 and the soft pressing lower roller 522, the cam will pass through the rectangular part of the light-guiding fiber web where there is no fiber, and will first contact the edge of the cam and the edge of the rectangle. The roughness of the cam here is the smallest on the entire cam and will rotate faster. During the rotation of the soft pressing upper roller 523, the contact point between the cam and the rectangular part keeps changing, from the edge of the rectangle to the middle of the rectangle. During this process, the roughness of the cam gradually increases, and the friction between the two also gradually increases. Therefore, during the rotation process, the part where the cam and the rectangle are in contact has different residence times due to different friction forces. The friction force is the largest in the middle and the residence time is also the longest. The soft pressing upper roller 523 continues to rotate, and the contact surface between the cam and the rectangular part moves from the middle to the edge, and the roughness and friction are reduced. This design controls the drawing speed by controlling the roughness, so that the stretching speed of the rectangular part is consistent and the stretching is uniform. Then the cooling mechanism 6 is used to cool the finished light box cloth for easy winding.

[0038] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and range of equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A laminating device for producing light box cloth with a pre-cleaning function, the laminating device presses the light box cloth raw material (1), characterized in that: The laminating device comprises a supporting mechanism (2), a pre-cleaning mechanism (3), a laminating machine body (4), a double laminating mechanism (5) and a cooling mechanism (6); the supporting mechanism (2) is connected to the pre-cleaning mechanism (3), the supporting mechanism (2) is connected to the laminating machine body (4), the supporting mechanism (2) is connected to the double laminating mechanism (5), the supporting mechanism (2) is connected to the cooling mechanism (6), and the laminating machine body (4) is connected to the double laminating mechanism (5).

2. The pressing device for producing light box cloth with pre-cleaning function according to claim 1, characterized in that: The support mechanism (2) comprises a support base plate (21), a support frame (22) and a material roll (23), three material rolls (23) are provided, one end of the support frame (22) away from the support base plate (21) is rotatably connected to the three material rolls (23), light box cloth material (1) is wound on the material rolls (23), the three material rolls (23) are arranged longitudinally, and the three material rolls (23) are PVC film, light guide fiber net, and PVC film from top to bottom, respectively, the support base plate (21) is connected to the pre-cleaning mechanism (3), the support base plate (21) is connected to the pressing machine body (4), the support base plate (21) is connected to the double pressing mechanism (5), and the support base plate (21) is connected to the cooling mechanism (6).

3. The pressing device for producing light box cloth with pre-cleaning function according to claim 1, characterized in that: The pre-cleaning mechanism (3) comprises a fan (31), a ventilation pipe (32) and an air outlet nozzle (33); the fan (31) is firmly connected to the supporting base plate (21); the fan (31) is firmly connected to the ventilation pipe (32); one end of the ventilation pipe (32) away from the fan (31) is firmly connected to the air outlet nozzle (33); the cross section of the air outlet nozzle (33) is rectangular; and the air outlet nozzle (33) is placed vertically.

4. The pressing device for producing light box cloth with pre-cleaning function according to claim 1, characterized in that: The laminating machine body (4) comprises a laminating shell (41), a first driving motor (42), a driven gear bar (43) and a primary pressing roller (44); the laminating shell (41) and the supporting base plate (21) are tightly connected; a laminating cavity (411) is provided in the laminating shell (41); an inlet (412) and an outlet (413) are provided on the laminating shell (41); the primary pressing roller (44) is placed in the laminating cavity (411); two primary pressing rollers (44) are provided, and the two primary pressing rollers (44) are placed at the inlet (412). ), the two initial pressing rollers (44) are respectively rotatably connected to the wall of the pressing chamber (411), the two initial pressing rollers (44) are placed on the same vertical line, the two initial pressing rollers (44) are transmission-connected via a driven gear (43), the first drive motor (42) is tightly connected to the outer wall of the pressing chamber (411), one of the initial pressing rollers (44) is tightly connected to the output end of the first drive motor (42), the pressing housing (41) is connected to the double pressing mechanism (5), and the pressing chamber (411) is connected to the double pressing mechanism (5).

5. The pressing device for producing light box cloth with pre-cleaning function according to claim 4, characterized in that: The double pressing mechanism (5) comprises a hard pressing device (51), the hard pressing device (51) being connected to a supporting bottom plate (21), the hard pressing device (51) being connected to a pressing chamber (411), the hard pressing device (51) comprising a hard pressing upper roller (511), a hard pressing lower roller (512) and an electric heating wire, the hard pressing upper roller (511) being placed in the pressing chamber (411), the hard pressing lower roller (512) being placed in the pressing chamber (411), two rotating holes being provided in a vertical direction on a side wall of the pressing chamber (411), one end of the hard pressing upper roller (511) and a pressing wire being provided on the side wall of the pressing chamber (411). The hard pressing upper roller (511) is rotatably connected to the inner wall of the pressing cavity (411); the other end of the hard pressing upper roller (511) is rotatably connected to the pressing cavity (411) through an upper rotating hole; one end of the hard pressing lower roller (512) is rotatably connected to the inner wall of the pressing cavity (411); the other end of the hard pressing lower roller (512) is rotatably connected to the pressing cavity (411) through a lower rotating hole; the distance between the hard pressing upper roller (511) and the hard pressing lower roller (512) is the sum of the thicknesses of the three layers of the PVC film, the fiber portion of the light guide fiber, and the PVC film; and electric heating wires are provided inside the hard pressing upper roller (511) and the hard pressing lower roller (512).

6. The pressing device for producing light box cloth with pre-cleaning function according to claim 5, characterized in that: The hard pressing device (51) further comprises a second driving motor (513), a first gear (514) and a second gear (515); the hard pressing upper roller (511) is fastened to the first gear (514) via one end of an upper rotating hole; the hard pressing lower roller (512) is fastened to the second gear (515) via one end of a lower rotating hole; the second driving motor (513) is fastened to the supporting bottom plate (21); the output end of the second driving motor (513) is fastened to the hard pressing upper roller (511); and the first gear (514) and the second gear (515) are meshed.

7. The pressing device for producing light box cloth with pre-cleaning function according to claim 1, characterized in that: The double pressing mechanism (5) further comprises a soft pressing device (52), wherein the soft pressing device (52) is connected to the supporting base plate (21), and the soft pressing device (52) is connected to the pressing chamber (411). The soft pressing device (52) comprises a third driving motor (521), a soft pressing lower roller (522), and a soft pressing upper roller (523), wherein the soft pressing lower roller (522) is rotationally connected to the pressing chamber (411), and the soft pressing upper roller (523) is rotationally connected to the pressing chamber (411). The third driving motor The machine (521) and the supporting bottom plate (21) are tightly connected, the output end of the third driving motor (521) is tightly connected to the soft pressing upper roller (523), the soft pressing upper roller (523) and the soft pressing lower roller (522) are connected by a driving gear transmission, the soft pressing upper roller (523) is provided with a plurality of rectangular protrusions, the soft pressing lower roller (522) is a smooth rolling roller, and the rectangular protrusions of the soft pressing upper roller (523) are provided with electric heating wires, and the roughness of the rectangular protrusions of the soft pressing upper roller (523) decreases from the middle to the periphery.

8. The pressing device for producing light box cloth with pre-cleaning function according to claim 1, characterized in that: The cooling mechanism (6) comprises a cooling water tank (61), a water supply pipe (62), a cooling roller (63) and a cooling pipe (64); the cooling water tank (61) is tightly connected to the supporting base plate (21); the cooling water tank (61) is tightly connected to the water supply pipe (62); the other end of the water supply pipe (62) is connected to the cooling roller (63); the cooling roller (63) is connected to the supporting base plate (21); the cooling pipe (64) is connected to the cooling roller (63); the cooling roller (63) comprises a cooling layer (631) and a roller wall (632); the cooling layer (631) and a cylindrical hollow structure, the cooling layer (631) and the roller wall (632) are fitted together, the water supply pipe (62) and the cooling layer (631) are connected, the water supply pipe (62) and the roller wall (632) are rotatably connected, the roller wall (632) and the supporting bottom plate (21) are connected via a support rod, the roller wall (632) and the support rod are rotatably connected, the cooling pipe (64) and the cooling layer (631) are connected, the cooling pipe (64) and the roller wall (632) are rotatably connected, and one end of the cooling pipe (64) away from the cooling layer (631) is connected to the cooling water tank (61).

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