Precise temperature control deviation rectification belt type casting machine

Abstract

The invention discloses a belt type casting machine capable of accurately controlling temperature and rectifying deviation. A rubber film conveying belt is wound on a first tensioning roller, a second tensioning roller, a third cooling roller, a second cooling roller, a first cooling roller and a conveying belt deviation rectifying device of the belt type casting machine. Racks are installed on the two opposite side edges of a deviation rectifying installation base of the conveying belt deviation rectifying device, a multi-tooth gear and a few-tooth gear which are fixedly installed at the two ends of a deviation rectifying roller core shaft are meshed with the corresponding racks respectively, the deviation rectifying roller core shaft is hinged to deviation rectifying roller supporting rods on the corresponding sides through spherical hinge structures, and the deviation rectifying roller supporting rods are movably supported on the deviation rectifying installation base. Two air uniformizing pore plates are installed in a temperature control box body of the adhesive film temperature control device, an adhesive film conveying belt penetrates through the space between the two air uniformizing pore plates which are arranged at intervals, each temperature control cavity is divided into a plurality of temperature control unit cavities through temperature control partition plates, and an electric heater, a semiconductor chilling plate and an air blower are arranged in each temperature control unit cavity. The device can accurately control the cooling and shaping temperature and the glue film path of the molten glue film, and has the advantages of high production efficiency and stable quality.

Description

Technical Field

[0001] The invention relates to a production device for making a cast film, in particular to a cast film forming machine for producing a solar photovoltaic cell encapsulation film and having a molten film conveyor belt. Background Art

[0002] At present, photovoltaic film casting machine is a mechanical equipment that rolls soft ribbon molten rubber into shape, and is a molding equipment in the production line of film products. It mainly includes a film extrusion die and multiple pairs of rollers corresponding to it. The main function of the rollers is to cool and shape the extruded film and press the film pattern.

[0003] The "high-precision temperature-controlled film casting machine" applied for and authorized by the applicant has a patent number of 202110783485.6. In this invention patent, the extruded film of the film extrusion die first enters the roller pair of the rubber roller and the steel pattern roller, and then passes through the grinding roller and the cooling roller to complete the film casting. Although the structure can press out the film surface pattern by rolling the rubber roller and the steel pattern roller, it is difficult to quickly cool down and shape the extruded film due to the relatively high temperature of the molten film just extruded from the extrusion die, which not only reduces the molding quality of the extruded film, but more importantly, restricts the rotation speed of the rubber roller and the steel roller. In response to the above shortcomings, the applicant applied for an "EVA film speed-increasing casting machine" on January 18, 2023, with an application number of 202310067310.4. The film casting machine of this application first undergoes cooling and shaping by two pairs of cooling rollers, and then performs pattern pressing and shaping. This structure improves the rotation speed of the casting roller and the operating efficiency of the casting machine to a certain extent.

[0004] However, no matter whether the roller is first embossed and then cooled and shaped, or first cooled and shaped and then embossed, there are always some obvious shortcomings: first, due to the limited contact angle between the film and the cooling roller, in order to achieve the ideal cooling and shaping effect, only the speed of the cooling roller can be controlled, and the reduction of the cooling roller speed will inevitably lead to a decrease in the operating efficiency of the casting machine. Therefore, the existing structure that relies on the cooling roller to cool and shape the extruded film has become a bottleneck for improving the production efficiency of the casting machine. In addition, the direct embossing contact between the molten film extruded from the extrusion die and the roller pair easily forms adhesion between the film and the roller pair, making the surface flatness of the film low, causing wrinkles and ribs, reducing the yield rate, and seriously wasting raw materials. In addition, the cooling temperature of the molten film extruded from the extrusion die will have a direct impact on the quality of the film. Improper temperature control will cause the raw material modification to be inadequate, the coupling activation to be insufficient, and the stress of each part of the film to be uneven, which is easy to cause the film to have defects such as wrinkles, cracks, and even holes. Summary of the invention

[0005] In view of the above-mentioned deficiencies in the prior art, the technical problem to be solved by the present invention is to provide a precise temperature control and deviation correction belt casting machine, which can not only accurately control the cooling and shaping temperature of the molten film and the running path of the film, but also effectively improve the production efficiency of the cast film and stabilize the quality of the finished product.

[0006] In order to solve the above technical problems, the precise temperature control and deviation correction belt type casting machine of the present invention comprises an extrusion die, and cooling roller 1, cooling roller 2 and cooling roller 3 rotatably supported on a roller support, the roller support and the conveyor belt support are fixedly arranged with each other, and the conveyor belt support is rotatably supported with tensioning roller 1 and tensioning roller 2; the conveyor belt support is also equipped with a conveyor belt deviation correction device and a film temperature control device;

[0007] A rubber film conveyor belt is wound around the tensioning roller 1, the tensioning roller 2, the cooling roller 3, the cooling roller 2, the cooling roller 1 and the conveyor belt deviation correction device;

[0008] The conveyor belt deviation correction device comprises a deviation correction mounting seat, racks are installed on opposite sides of the deviation correction mounting seat, multi-tooth gears and small-tooth gears fixedly installed at both ends of the deviation correction roller core shaft are respectively meshed with corresponding racks, and both ends of the deviation correction roller core shaft are hinged to the deviation correction roller support rod on the corresponding side through a ball joint structure, and the deviation correction roller support rod is movably supported on the deviation correction mounting seat;

[0009] The film temperature control device includes a temperature control box, in which two parallel uniform air holes are fixedly installed, and the film conveyor belt passes through the middle of the two spaced-apart uniform air holes, and the uniform air holes respectively form a temperature control cavity with the top wall and the bottom wall of the temperature control box; each temperature control cavity is divided into a plurality of temperature control unit cavities by a temperature control partition, and an electric heater, a semiconductor refrigeration sheet and a hair dryer are arranged in the temperature control unit cavity.

[0010] Preferably, the cooling roller one and the cooling roller three are respectively located opposite to each other on the front and rear sides of the cooling roller two, and an embossed pattern is arranged on the outer cylinder surface of the cooling roller two; the rubber film conveyor belt is a mesh belt or a woven belt; a pattern structure is arranged on the belt surface of the rubber film conveyor belt, and the pattern structure is consistent with the embossed pattern on the cooling roller two.

[0011] Preferably, auxiliary cooling roller 2 and auxiliary cooling roller 1 are also provided on the rear side of the cooling roller 1, and the auxiliary cooling roller 2 and auxiliary roller 1 are rotatably supported on the roller bracket; the extrusion mold is installed on the mold bracket, and the extrusion mold is located above the front end of the film conveyor belt.

[0012] Preferably, the deflection correction roller core shaft and the deflection correction roller support rod are both two, and the same end of the deflection correction roller core shaft is hinged to the deflection correction roller support rod on the same end side through a corresponding ball joint structure; a deflection correction roller sleeve is rotatably supported on the deflection correction roller core shaft, and the film conveyor belt passes around the deflection correction roller sleeve; the deflection correction roller core shaft is connected to the deflection correction motor in a transmission manner; the number of teeth of the multi-tooth gear and the small-tooth gear differs by at least one tooth;

[0013] Preferably, the deviation correction mounting seat is a rectangular frame structure, and a detection sensor is installed on the deviation correction mounting seat; rack mounting waist grooves are provided at both ends of the rack, and the rack mounting pin movably passes through the rack mounting waist groove to install the rack on the deviation correction mounting seat.

[0014] Preferably, the ball joint structure includes an inner ring of a core shaft ball joint fixedly mounted on the core shaft of the correcting roller, and an outer ring of a core shaft ball joint fixedly mounted on the support rod of the correcting roller, the outer convex spherical surface of the inner ring of the core shaft ball joint is slidably supported on the inner concave spherical surface of the outer ring of the core shaft ball joint; the two parallel core shafts of the correcting roller are connected by a core shaft transmission pair; the core shaft of the correcting roller is connected to the correcting motor by a correcting roller drive pair.

[0015] Preferably, both of the two correcting roller support rods are provided with support rod waist grooves, and the support rod pin passes through the support rod waist grooves of the two correcting roller support rods to movably mount the correcting roller support rods on the correcting mounting seat; the rack mounting waist groove on the rack is an arc-shaped through groove, and the two sections of rack mounting waist grooves on the same rack are located on the same circle.

[0016] Preferably, a plurality of through holes are evenly distributed on the surface of the uniform air hole plate; the cold end of the semiconductor refrigeration plate faces the cavity of the corresponding temperature control unit cavity, the hot end of the semiconductor refrigeration plate is fixed on the radiator, and the heat dissipation fins of the radiator extend into the heat dissipation cabinet.

[0017] Preferably, the circulating water outlet of the heat dissipation cabinet is communicated with the water inlet of the chiller, and the circulating water inlet of the heat dissipation cabinet is communicated with the water outlet of the chiller.

[0018] Preferably, the circulating water outlet and / or the circulating water inlet of the heat dissipation cabinet are connected to the corresponding port of the chiller through a cold water control valve.

[0019] In the technical scheme of the present invention, since a film conveyor belt is stretched around the cooling roller group, the tensioning roller group and the conveyor belt correction device, the film in a molten state extruded by the extrusion mold with a relatively high temperature does not directly enter the counter-roll cooling roller for cooling, but the extruded film in a molten state enters the film conveyor belt for temperature-controlled casting and shaping. On the one hand, the molten film can obtain sufficient film shaping time and shaping path length on the conveyor belt without being restricted by the cooling wrap angle size and wrap angle arc length of the cooling roller, so that the conveying speed of the film on the conveyor belt can be greatly improved, thereby greatly improving the casting operation efficiency of the casting machine; on the other hand, the film can form a uniform film surface pattern on the contact surface with the conveyor belt; during the film conveying process, the process parameters such as the film conveying environment temperature can be controlled to obtain a film with more stable quality.

[0020] Because the film conveyor belt bypasses the conveyor belt correcting device during its circumferential operation, the correcting roller on the conveyor belt correcting device operates differentially with the help of the differential teeth of the multi-tooth gear and the small-tooth gear, thereby achieving precise micro-adjustment of the direction of the correcting roller, so that different tension forces are generated on both sides of the conveyor belt, thereby adjusting the running direction of the film and making the running path of the film always remain in the same straight line direction, which not only avoids the uneven stretching and wrinkling of the film surface caused by the curved operation of the film, but also avoids the waste of film material caused by the deviation of the film edge and the increase in the cutting amount of the film edge, thereby effectively improving the film yield and avoiding the waste of film raw materials.

[0021] Since the molten extruded film passes through the film temperature control device along with the film conveyor belt, the film temperature control device can adjust the cooling speed of the film and the film temperature control time by means of a heating or cooling device to create the best film environment temperature; and different temperature control sections can be set in the film temperature control device to achieve precise temperature control, so that the film modification is in place, the coupling activation is sufficient, and the uneven stress of the film in all directions can be effectively eliminated. Through the optimization of the film setting temperature, the film can be completely prevented from wrinkling and bursting, as well as cracking and holes, thereby effectively improving and stabilizing the quality of the film product while ensuring the efficiency of the cast film production. The semiconductor refrigeration sheet is used as the refrigeration component, which has the advantages of high reliability, rapid cooling and heating, high-precision temperature control, rapid response and high efficiency, and can achieve precise temperature control of the set film, effectively ensuring the quality of the finished film.

[0022] The structure of the present invention is more conducive to the continuous and large-scale production of film casting, improves the casting production efficiency, and ensures the mechanical properties and product quality of the cast film. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The precise temperature control and deviation correction belt casting machine of the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0024] Figure 1 It is a front structural diagram of a specific embodiment of the precise temperature control and deviation correction belt-type casting machine of the present invention;

[0025] Figure 2 yes Figure 1 A schematic diagram of the running path of the film conveyor belt and the film in the embodiment shown;

[0026] Figure 3 yes Figure 1 A schematic cross-sectional structure diagram of the film temperature control device in the embodiment shown;

[0027] Figure 4 yes Figure 3 Schematic diagram of the assembly structure of the semiconductor refrigeration plate and its heat dissipation cabinet in the structure shown;

[0028] Figure 5 yes Figure 1 A schematic structural diagram of a conveyor belt deviation correction device in the embodiment shown;

[0029] Figure 6 yes Figure 5 A-direction view;

[0030] Figure 7 yes Figure 5 Structural diagram of the center deviation correction mounting seat;

[0031] Figure 8 yes Figure 7 B-direction view;

[0032] Fig. 9 yes Figure 8 Enlarged view of middle part I;

[0033] Fig.10 yes Fig. 9 A top view of

[0034] Fig.11 yes Figure 5 Installation structure diagram of the middle deviation correcting roller sleeve;

[0035] Fig.12 yes Fig.11 Top view of the .

[0036] In the figure, 1 is a mold support, 2 is an extrusion mold, 3 is a tensioning roller, 4 is a guide roller, 5 is a conveyor belt support, 6 is a support seat, 7 is a conveyor belt correction device, 701 is a correction mounting seat, 702 is a multi-tooth gear, 703 is a rack, 704 is a rack mounting pin, 705 is a small-tooth gear, 706 is a spindle transmission pair, 707 is a support rod pin seat, 708 is a support rod pin, 709 is a support rod waist groove, 710 is a correction roller support rod, 711 is a spindle ball joint inner ring, 712 is a spindle ball joint outer ring, 713 is a correction roller spindle, 714 is a correction roller sleeve, 715 is a correction roller drive pair, 716 is a correction motor, 717 is a rack mounting waist groove, 718 is a correction roller sleeve, 719 is a correction roller sleeve, 720 is a correction roller sleeve, 721 is a correction roller sleeve, 722 is a correction roller sleeve, 723 is a correction roller sleeve, 724 is a correction roller sleeve, 725 is a correction roller sleeve, 726 is a correction roller sleeve, 727 is a correction roller sleeve, 728 is a correction roller sleeve, 729 is a correction roller sleeve, 730 is a correction roller sleeve, 731 is a correction roller sleeve, 732 is a correction roller sleeve, 733 is a correction roller sleeve, 734 is a correction roller sleeve, 735 is a correction roller sleeve, 736 is a correction roller sleeve, 737 is a correction roller sleeve, 738 is a correction roller sleeve, 739 is a correction roller sleeve, 740 is a correction roller sleeve, 741 is a correction roller sleeve, 742 is a correction roller sleeve, 743 is a correction roller sleeve, 744 is a correction roller 8—detection sensor, 8—connecting rod, 9—guide roller 2, 10—roller bracket, 11—guide roller 3, 12—sliding rail, 13—rubber film, 14—auxiliary cooling roller 1, 15—auxiliary cooling roller 2, 16—cooling roller 1, 17—cooling roller 2, 18—cooling roller 3, 19—tensioning roller 2, 20—rubber film temperature control device, 201—temperature control box, 202—electric heater, 203—semiconductor refrigeration sheet, 204—hair dryer, 205—radiator, 206—heat dissipation cabinet, 207—temperature control chamber partition, 208—uniform air hole plate, 209—chiller, 210—cold water control valve, 21—guide roller 4, 22—rubber film conveyor belt. DETAILED DESCRIPTION

[0037] like Figure 1 , Figure 2 The precise temperature control and deviation correction belt type casting machine shown in the figure comprises a roller support 10 and a support base 6, the roller support 10 and the support base 6 are fixedly connected to each other through a connecting rod 8, and the roller support 10 and the support base 6 fixedly connected to each other are movably supported on the sliding ground rail 12 through the rollers on them for debugging and maintenance. A conveyor belt support 5 is also fixedly installed on the support base 6, and the conveyor belt support 5 mainly comprises support wall panels on both sides, and a tensioning roller 13 and a tensioning roller 2 19 are rotatably supported between the fixedly connected support wall panels, and the tensioning roller 13 is rotatably supported on the wall panels on both sides of the conveyor belt support 5 through a tensioning slide seat to adjust the tension of the conveyor belt. A guide roller 21 and a guide roller 4 are rotatably supported between the wall panels on both sides of the conveyor belt bracket 5. A conveyor belt deviation correction device 7 is also installed on the conveyor belt bracket 5. The conveyor belt deviation correction device 7 extends downward and rotatably supports two mutually parallel deviation correction roller core shafts 713. A deviation correction roller sleeve 714 is rotatably mounted on the deviation correction roller core shaft 713.

[0038] The roller support 10 mainly includes roller support wall panels fixedly connected to each other on both sides. The cooling roller 3 18, cooling roller 2 17 and cooling roller 1 16 are rotatably supported in sequence from front to back through corresponding support bearings on the wall panels on both sides of the roller support 10. The cooling roller 3 18 and cooling roller 1 16 are respectively located on both sides of the cooling roller 2 17 in opposite directions. The cooling roller 3 18, cooling roller 2 17 and cooling roller 1 16 are all connected with corresponding circulating cooling water circuits, that is, the cooling water enters the roller cooling cavity from one end of the roller for heat exchange and then flows out from the other end of the roller cooling cavity. The cooling roller 2 17 located in the middle position is a steel roller, and an embossed pattern is formed on the outer cylinder surface of the steel roller, and the embossed pattern corresponds to or is the same as the embossed pattern of the rubber film conveyor belt 22. The outer cylinder surfaces of the cooling roller 3 18 and the cooling roller 2 16 are coated with a rubber layer, and the material and structure of the rubber layer are the same as those in the prior art. The cooling roller three 18, the cooling roller two 17 and the cooling roller one 16 are all connected to the corresponding roller drive motors in a transmission manner, or at least one roller is connected to the corresponding roller drive motor in a transmission manner.

[0039] A guide roller 2 9 and a guide roller 3 11 are rotatably supported between the wall panels on both sides of the roller support 10. An auxiliary cooling roller 14 and an auxiliary cooling roller 2 15 are rotatably supported at a distance at the rear end of the roller support 10. The auxiliary cooling roller 14 and the auxiliary cooling roller 2 15 are driven by corresponding drive motors, and the auxiliary cooling roller 14 and the auxiliary cooling roller 2 15 are also connected to the corresponding circulating cooling water circuit.

[0040] The endless film conveyor belt 22 passes through the tensioning roller 13, the tensioning roller 219, the cooling roller 318, the cooling roller 217, the cooling roller 16, the guide roller 311, the guide roller 29, the guide roller 421, the two correction roller sleeves 714 of the conveyor belt correction device 7, and the guide roller 14 in sequence and returns to the tensioning roller 13 to form a surrounding conveyor belt structure. The film conveyor belt 22 adopts a metal mesh belt, and the belt surface pattern of the metal mesh belt is consistent with the outer cylinder surface pattern of the cooling roller 217. Of course, the film conveyor belt 22 can also adopt a woven belt made of fiber weaving, and its belt surface pattern is also consistent with the cylinder surface pattern of the cooling roller 217.

[0041] A film temperature control device 20 is also horizontally fixedly installed at the upper end of the conveyor belt support 5. The film temperature control device 20 is close to the extrusion die 2, and the horizontal section of the film conveyor belt 22 just passes through the temperature control cavity of the film temperature control device 20. The extrusion die 2 is located above the front end of the horizontal section of the film conveyor belt 22. The extrusion die 2 is movably hoisted on the die support 1, and the extrusion port of the extrusion die 2 is tilted toward the upper belt surface of the film conveyor belt 22.

[0042] The molten film extruded from the extrusion port of the extrusion die 2 enters the belt surface of the horizontal section of the film conveyor belt 22, and passes through the temperature control cavity of the film temperature control device 20 along with the film conveyor belt 22, and then passes through the opposing rolling points of the cooling roller 2 17 and the cooling roller 3 18, and then successively bypasses the lower cylinder surface of the cooling roller 2 17 and the upper cylinder surface of the cooling roller 1 16, and then successively bypasses the lower cylinder surface of the auxiliary cooling roller 2 15 and the upper cylinder surface of the auxiliary cooling roller 1 14, and becomes a molded film with embossed texture.

[0043] like Figure 3 The film temperature control device shown in the figure comprises a temperature control box 20, which has a rectangular tube structure. Narrow input ports and output ports for the film conveyor belt 22 and the film 13 thereon to pass through and output are respectively arranged on the end plates at both ends of the temperature control box 201 with the rectangular tube structure.

[0044] Two uniform air holes 208 are arranged horizontally and spaced apart in the chamber of the temperature control chamber 201, and a horizontal passage for passing the film conveyor belt 22 and the film 13 is formed between the two uniform air holes 208. The uniform air holes 208 located on the upper side and the top chamber wall of the temperature control chamber 201 form an upper temperature control chamber, and the uniform air holes 208 located on the lower side and the bottom chamber wall of the temperature control chamber 201 form a lower temperature control chamber. A number of circular through holes of the same aperture are evenly distributed on the uniform air holes 208.

[0045] The upper temperature control cavity and the lower temperature control cavity are divided into a plurality of temperature control unit cavities by the temperature control cavity partition 207. A blower 204 for blowing air into the unit cavity is installed in each temperature control unit cavity, and semiconductor cooling sheets 203 and electric heaters 202 are installed on both sides of the blower 204. The blower 204, semiconductor wafer 203 and electric heater 202 in the upper temperature control unit cavity are installed on the top of the wall of the temperature control box 201, and the blower 204, semiconductor wafer 203 and electric heater 202 in the lower temperature control unit cavity are installed on the bottom of the wall of the temperature control box 201.

[0046] The cold end of the semiconductor cooling sheet 203 faces the cavity of the corresponding temperature control unit. Figure 4The hot end of the semiconductor cooling plate 203 shown is facing outside the cavity and fixedly installed on the installation plane of the radiator 205. The other side of the radiator 205 is provided with a plurality of heat dissipation fins, which extend into the heat dissipation cabinet 206. The refrigerant water in the heat dissipation cabinet 206 is pure water or purified water. Each heat dissipation cabinet 206 is provided with a circulating water outlet and a circulating water inlet. The circulating water outlet is connected to the water inlet of the chiller 209, and the circulating water inlet is connected to the water outlet of the chiller 209. And the circulating water outlet is connected to the chiller 209 through the cold water control valve 210; of course, the circulating water inlet can also be connected to the chiller 209 through the cold water control valve 210. The cold water control valve 210 is an electromagnetic stop valve. The hair dryer 204 is an axial flow fan, the chiller 209 is a compression chiller, and the radiator 205 is an aluminum heat dissipation block with heat dissipation fins.

[0047] In the above structure, since the upper temperature control chamber and the lower temperature control chamber are divided into a plurality of temperature control unit chambers, the film 13 on the film conveyor belt 22 can be temperature-controlled in sections, so that different heating and heating temperature parameter values ​​are implemented for different film material components to achieve ideal modification and activation effects. The number of temperature control unit chambers should be determined according to specific design conditions. The temperature control unit chambers can be set to form a homogenized temperature control airflow through the homogenization effect of the chamber. The temperature control airflow in the chamber is then blown toward the film conveyor belt 22 and the film 13 thereon through the uniform air hole plate 208, so that the temperature control airflow acts evenly on the upper and lower surfaces of the film.

[0048] like Figure 5 — Fig.12 The conveyor belt deviation correction device shown in the figure comprises a deviation correction mounting seat 701 of a rectangular frame structure, which is fixedly mounted on the conveyor belt support 5 during installation. Two sections of racks 703 are respectively mounted on the two opposite frame beams of the deviation correction mounting seat 701, so a total of four sections of racks 703 are mounted on the deviation correction mounting seat 701. Arc-shaped rack mounting waist grooves 717 are provided at both ends of the rack 703, and the rack mounting waist grooves 717 at both ends of the same rack 703 are located on the same circumference. The rack mounting pin 704 movably passes through the rack mounting waist groove 717 and is fixedly screwed on the frame beam of the deviation correction mounting seat 701, and the pin body section of the rack mounting pin 704 located in the rack mounting waist groove 717 is sleeved with a sliding sleeve, so that the rack 703 can swing slightly relative to the frame beam of the deviation correction mounting seat 701.

[0049] Two parallel correction roller rods 710 and two parallel correction roller core shafts 713 are arranged above the correction mounting seat 701, and the correction roller rods 710 and the correction roller core shaft 713 are arranged perpendicular to each other. Both ends of the correction roller core shaft 713 are hinged to the correction roller rods 710 at the corresponding ends through a ball hinge structure, and the ball hinge structure includes a core shaft ball hinge inner ring 711 fixedly mounted on the correction roller core shaft 713, and a core shaft ball hinge outer ring 712 fixedly mounted on the correction roller rod 710, the outer convex spherical surface of the core shaft ball hinge inner ring 711 is slidably supported on the concave spherical surface of the core shaft ball hinge outer ring 712, and the core shaft ball hinge inner ring 711 and the core shaft ball hinge outer ring 712 are both made of organic wear-resistant materials such as nylon.

[0050] A multi-tooth gear 702 and a small-tooth gear 705 are fixedly mounted on the shaft necks of the correction roller support rod 710 extending from both ends of the correction roller core shaft 713, respectively. The two multi-tooth gears 702 on the two correction roller core shafts 713 are located on the same side, and the multi-tooth gears 702 located on the same side are respectively meshed with the racks 703 on the frame beam of the correction mounting seat 701 on the corresponding side; similarly, the two small-tooth gears 705 at the other ends of the two correction roller core shafts 713 are also respectively meshed with the corresponding racks 703. In this embodiment, the number of teeth of the multi-tooth gear 702 is 46, and the number of teeth of the small-tooth gear 705 is 44. The number of teeth of the multi-tooth gear 702 is at least one more than the number of teeth of the small-tooth gear 705. When the correction roller core shaft (713) rotates, due to the difference in the number of teeth between the multi-tooth gear 702 and the small-tooth gear 705 at both ends of the same correction roller core shaft (713), the axis of the correction roller core shaft (713) will slightly swing in the clockwise or counterclockwise direction as the gears rotate in the forward or reverse direction. Since the difference in the number of teeth between the multi-tooth gear 702 and the small-tooth gear 705 is very small, even one tooth, accurate correction can be achieved.

[0051] The extended end of one deflection correction core shaft 713 is connected to the deflection correction motor 716 through the deflection correction roller drive pair 715. The other extended ends on the same side of the two deflection correction roller core shafts 713 are connected to each other through the core shaft drive pair 706. The deflection correction roller drive pair 715 and the core shaft drive pair 706 are both synchronous toothed belt drive pairs, and the deflection correction motor 716 is a servo motor.

[0052] A detection sensor 718 is installed on the frame of the deviation correction mounting seat 701 . The detection sensor 718 is a photoelectric sensor for detecting the running edge position of the rubber film 13 on the rubber film conveyor belt 22 .

[0053] When the film 13 deviates from the normal conveying path, the detection sensor 718 sends information to the correction controller, which instructs the correction motor 716 to operate. The correction motor 716 drives the two correction roller mandrels 713 through the correction roller driving pair 715 and the mandrel transmission pair 706. Since there is a difference in the number of teeth between the multi-tooth gear 702 and the small-tooth gear 705 fixedly installed at both ends of the correction mandrel 713, the correction mandrel 713 deflects, thereby achieving the correction effect of the film conveyor belt 22 and the rubber waist 13 thereon.

[0054] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. According to the content of this specification, many modifications and changes can be made. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that technicians in the relevant technical field can understand and use the present invention well. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

Claims

1. A precision temperature control and deviation correction belt casting machine, comprising an extrusion die (2), and a cooling roller 1 (16), a cooling roller 2 (17) and a cooling roller 3 (18) rotatably supported on a roller support (10), characterized in that: The roller support (10) and the conveyor belt support (5) are fixedly arranged with each other, and the conveyor belt support (5) is rotatably supported with a tensioning roller 1 (3) and a tensioning roller 2 (19); the conveyor belt support (5) is also equipped with a conveyor belt deviation correction device (7) and a film temperature control device (20); A rubber film conveyor belt (22) is wound around the tensioning roller one (3), the tensioning roller two (19), the cooling roller three (18), the cooling roller two (17), the cooling roller one (16) and the conveyor belt deviation correction device (7); The conveyor belt deviation correction device (7) comprises a deviation correction mounting seat (701), racks (703) are installed on opposite sides of the deviation correction mounting seat (701), multi-tooth gears (702) and small-tooth gears (705) fixedly installed at both ends of the deviation correction roller core shaft (713) are respectively meshed with corresponding racks (703), both ends of the deviation correction roller core shaft (713) are hinged to the deviation correction roller support rod (710) on the corresponding side through a ball joint structure, and the deviation correction roller support rod (710) is movably supported on the deviation correction mounting seat (701); The adhesive film temperature control device (20) comprises a temperature control box (201), in which two parallel uniform air holes (208) are fixedly installed, and the adhesive film conveyor belt (22) passes through the middle of the two mutually spaced uniform air holes (208), and the uniform air holes (208) respectively form a temperature control cavity with the top wall and the bottom wall of the temperature control box (201); each temperature control cavity is divided into a plurality of temperature control unit cavities by a temperature control partition (207), and an electric heater (202), a semiconductor cooling plate (203) and a hair dryer (204) are arranged in the temperature control unit cavity.

2. The precise temperature control and deviation correction belt casting machine according to claim 1, characterized in that: The cooling roller one (16) and the cooling roller three (18) are respectively located opposite to each other on the front and rear sides of the cooling roller two (17), and an embossed pattern is arranged on the outer cylinder surface of the cooling roller two (17); the rubber film conveyor belt (22) is a mesh belt or a woven belt; a pattern structure is arranged on the belt surface of the rubber film conveyor belt (22), and the pattern structure is consistent with the embossed pattern on the cooling roller two (17).

3. The precise temperature control and deviation correction belt casting machine according to claim 1 or 2, characterized in that: The rear side of the cooling roller one (16) is also provided with an auxiliary cooling roller two (15) and an auxiliary cooling roller one (14), and the auxiliary cooling roller two (15) and the auxiliary roller one (14) are rotatably supported on the roller bracket (10); the extrusion die (2) is installed on the die bracket (1), and the extrusion die (2) is located above the front end of the film conveyor belt (22).

4. The precise temperature control and deviation correction belt casting machine according to claim 1, characterized in that: The deflection correction roller core shaft (713) and the deflection correction roller support rod (710) are both in two pieces, and the same end of the deflection correction roller core shaft (713) is hinged to the deflection correction roller support rod (710) on the same end side through a corresponding ball joint structure; a deflection correction roller sleeve (714) is rotatably supported on the deflection correction roller core shaft (713), and the film conveyor belt (22) passes around the deflection correction roller sleeve (714); the deflection correction roller core shaft (713) is transmission-connected to the deflection correction motor (716); the number of teeth of the multi-tooth gear (702) and the small-tooth gear (705) differ by at least one tooth.

5. The precise temperature control and deviation correction belt casting machine according to claim 1 is characterized in that: The deflection correction mounting seat (701) is in a rectangular frame structure, and a detection sensor (718) is mounted on the deflection correction mounting seat (701); rack mounting waist grooves (717) are provided at both ends of the rack (703), and the rack mounting pin (704) movably passes through the rack mounting waist groove (717) to mount the rack (703) on the deflection correction mounting seat (701).

6. The precise temperature control and deviation correction belt casting machine according to claim 1, 4 or 5, characterized in that: The ball joint structure comprises a core shaft ball joint inner ring (711) fixedly mounted on a deflection correction roller core shaft (713), and a core shaft ball joint outer ring (712) fixedly mounted on a deflection correction roller support rod (710); the outer convex spherical surface of the core shaft ball joint inner ring (711) is slidably supported on the inner concave spherical surface of the core shaft ball joint outer ring (712); two mutually parallel deflection correction roller core shafts (713) are connected in transmission via a core shaft transmission pair (706); the deflection correction roller core shaft (713) is connected in transmission via a deflection correction roller drive pair (715) and a deflection correction motor (716).

7. The precise temperature control and deviation correction belt casting machine according to claim 1, 4 or 5, characterized in that: The two deflection-correcting roller support rods (710) are both provided with support rod waist grooves (709), and the support rod pin shaft (708) passes through the support rod waist grooves (709) of the two deflection-correcting roller support rods (710) to movably mount the deflection-correcting roller support rods (710) on the deflection-correcting mounting seat (701); the rack mounting waist groove (717) on the rack (703) is an arc-shaped through groove, and the two sections of the rack mounting waist grooves (717) on the same rack (703) are located on the same circumference.

8. The precise temperature control and deviation correction belt casting machine according to claim 1, characterized in that: The uniform air hole plate (208) is evenly distributed with a plurality of through holes on its surface; the cold end of the semiconductor cooling plate (203) faces the cavity of the corresponding temperature control unit, the hot end of the semiconductor cooling plate (203) is fixed on the radiator (205), and the heat dissipation fins of the radiator (205) extend into the heat dissipation cabinet (206).

9. The precise temperature control and deviation correction belt casting machine according to claim 8, characterized in that: The circulating water outlet of the heat dissipation cabinet (206) is connected to the water inlet of the chiller (209), and the circulating water inlet of the heat dissipation cabinet (206) is connected to the water outlet of the chiller (209).

10. The precise temperature control and deviation correction belt casting machine according to claim 1, 8 or 9, characterized in that: The circulating water outlet and / or the circulating water inlet of the heat dissipation cabinet (206) are connected to the corresponding ports of the chiller (209) through the cold water control valve (210).

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