Precise temperature control and deviation correction belt type casting machine

Abstract

The application discloses a precision temperature control and deviation rectification belt type casting machine, wherein a rubber film conveying belt is arranged around a tensioning roller one, a tensioning roller two, a cooling roller cylinder three, a cooling roller cylinder two, a cooling roller cylinder one and a conveying belt deviation rectification device; a rack is arranged on opposite sides of a deviation rectification mounting seat of the conveying belt deviation rectification device, a multi-tooth gear and a few-tooth gear fixedly installed at both ends of a deviation rectification roller core shaft are respectively engaged with corresponding racks, the deviation rectification roller core shaft is hinged to a corresponding side deviation rectification roller supporting rod through a ball hinge structure, and the deviation rectification roller supporting rod is movably supported on the deviation rectification mounting seat; two air uniformity hole plates are installed in a temperature control box body of a rubber film temperature control device, the rubber film conveying belt passes through the middle of the two mutually spaced air uniformity hole plates, each temperature control cavity is divided into a plurality of temperature control unit cavities through a temperature control partition plate, and an electric heater, a semiconductor refrigerating sheet and a hair dryer are arranged in the temperature control unit cavities. The application can accurately control the cooling and shaping temperature and the rubber film path of the molten rubber film, and has the advantages of high production efficiency and stable quality.

Description

TECHNICAL FIELD

[0001] The present application relates to a production equipment for making a cast film, in particular to a casting machine for producing solar photovoltaic cell packaging adhesive film and having a molten adhesive film conveying belt. BACKGROUND

[0002] The current photovoltaic adhesive film casting machine is a mechanical equipment for casting by pressing the soft strip-shaped molten adhesive material against the roll. It is a molding equipment in the production line of adhesive film products. It mainly includes a film extrusion die and a plurality of pairs of corresponding rollers. The main function of the pair of rollers is to cool and shape the extruded adhesive film and to press the adhesive film pattern.

[0003] The applicant has applied for and obtained a patent for "high-precision temperature-controlled film casting machine" with the patent number 202110783485.6. In this invention, the extruded film of the film extrusion die first enters the pair of rollers of the rubber roller and the steel patterned roller, and then passes through the frosted roller and the cooling roller to complete the casting of the adhesive film. Although this structure can press the surface pattern of the film by the pair of rollers of the rubber roller and the steel patterned roller, the extruded film is difficult to cool and shape quickly 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 adhesive film, but more importantly, restricts the rotation speed of the rubber roller and the steel roller. In view of the above shortcomings, the applicant has applied for "EVA adhesive film speed-increasing casting machine" on January 18, 2023, with the application number 202310067310.4. The adhesive film casting machine of this application first passes through two pairs of cooling rollers for cooling and shaping, 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 some extent.

[0004] However, whether the embossing process is performed by the pair of rollers first and then the cooling and shaping, or the cooling and shaping is performed first and then the embossing process, there are still some obvious shortcomings. First of all, due to the limited contact angle between the adhesive film and the cooling roller, in order to achieve the ideal cooling and shaping effect, the rotation speed of the cooling roller must be controlled, and the reduction of the rotation speed of the cooling roller will inevitably lead to the decrease of the operating efficiency of the casting machine. Therefore, the existing structure that relies on the cooling roller for cooling and shaping of the extruded adhesive film has become a bottleneck for improving the production efficiency of the casting machine. Moreover, the direct embossing contact between the molten adhesive film extruded from the extrusion die and the roller pair easily causes the adhesive film to stick to the pair of rollers, resulting in low surface flatness of the adhesive film, wrinkles and burst, low yield, and serious waste of raw materials. Furthermore, the cooling temperature of the molten adhesive film extruded from the extrusion die directly affects the quality of the adhesive film. If the temperature control is not proper, the modification of the raw material may not be complete, the coupling activation may not be sufficient, the stress of the adhesive film may not be uniform, and the adhesive film may easily wrinkle, crack, even have holes, and other defects. SUMMARY

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

[0006] To solve the above-mentioned technical problem, the precise temperature control and deviation correction belt type casting machine of the present application comprises an extrusion die, and a cooling roller one, a cooling roller two and a cooling roller three rotatably supported on a roller support, wherein the roller support and a conveying belt support are fixedly arranged, the conveying belt support rotatably supports a tensioning roller one and a tensioning roller two, the conveying belt support further installs a conveying belt deviation correction device and an adhesive film temperature control device;

[0007] The adhesive film conveying belt is wrapped around the tensioning roller one, the tensioning roller two, the cooling roller three, the cooling roller two, the cooling roller one and the conveying belt deviation correction device.

[0008] The conveying belt deviation correction device comprises a deviation correction mounting seat, a rack is installed on each of the opposite sides of the deviation correction mounting seat, a multi-toothed gear and a few-toothed gear fixedly installed at the two ends of a deviation correction roller core shaft are respectively engaged with the corresponding racks, the two ends of the deviation correction roller core shaft are hinged to the deviation correction roller support rods on the corresponding sides through a ball hinge structure, and the deviation correction roller support rods are movably supported on the deviation correction mounting seat.

[0009] The adhesive film temperature control device comprises a temperature control box body, two parallel uniform air hole plates are fixedly installed in the temperature control box body, the adhesive film conveying belt passes through the middle of the two spaced-apart uniform air hole plates, and the uniform air hole plates form temperature control cavities with the top wall and the bottom wall of the temperature control box body; each temperature control cavity is divided into a plurality of temperature control unit cavities by a temperature control partition plate, and an electric heater, a semiconductor refrigerating sheet and a blower are arranged in each temperature control unit cavity.

[0010] Preferably, the cooling roller one and the cooling roller three are respectively located on the front and rear sides of the cooling roller two, the outer cylinder surface of the cooling roller two is provided with an embossed pattern, the adhesive film conveying belt is a mesh belt or a woven belt, and the belt surface of the adhesive film conveying belt is provided with a pattern structure which is matched with the embossed pattern on the cooling roller two.

[0011] Preferably, the rear side of the cooling roller one is further provided with an auxiliary cooling roller two and an auxiliary cooling roller one, the auxiliary cooling roller two and the auxiliary roller one are rotatably supported on the roller support, and the extrusion die is installed on a die support and located above the front end of the adhesive film conveying belt.

[0012] Preferably, the two deviation rectifying roller shafts are hinged on the same end side of the deviation rectifying roller support rods through corresponding spherical hinge structures; the deviation rectifying roller shafts are rotatably supported with deviation rectifying roller sleeves, and the rubber film conveying belt passes through the deviation rectifying roller sleeves; the deviation rectifying roller shafts are drivingly connected with the deviation rectifying motor; the number of teeth of the multi-tooth gear and the few-tooth gear is at least one tooth different.

[0013] Preferably, the deviation rectifying mounting base is in a square frame structure, and a detection sensor is mounted on the deviation rectifying mounting base; both ends of the rack are provided with rack mounting waist grooves, and a rack mounting pin is movably arranged through the rack mounting waist grooves to mount the rack on the deviation rectifying mounting base.

[0014] Preferably, the spherical hinge structure comprises a shaft spherical hinge inner ring fixedly mounted on the deviation rectifying roller shaft and a shaft spherical hinge outer ring fixedly mounted on the deviation rectifying roller support rod, and an outer convex spherical surface of the shaft spherical hinge inner ring is slidingly supported on an inner concave spherical surface of the shaft spherical hinge outer ring; the two deviation rectifying roller shafts are drivingly connected through a shaft driving pair; the deviation rectifying roller shafts are drivingly connected with the deviation rectifying motor through a deviation rectifying roller driving pair.

[0015] Preferably, both of the deviation rectifying roller support rods are provided with support rod waist grooves, and a support rod pin shaft is arranged through the support rod waist grooves of the two deviation rectifying roller support rods to movably mount the deviation rectifying roller support rods on the deviation rectifying mounting base; the rack mounting waist grooves on the rack are arc-shaped through grooves, and two rack mounting waist grooves on the same rack are located on the same circumference.

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

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

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

[0019] In the technical scheme of the present application, since the rubber film conveying belt is looped and tensioned on the cooling roller set, the tensioning roller set and the conveying belt deviation rectifying device, the rubber film extruded by the extrusion die in a relatively high temperature and in a molten state does not directly enter the cooling roller for cooling, but enters the rubber film conveying belt for temperature control and flow casting and setting, on the one hand, the molten rubber film can obtain sufficient rubber film setting time and setting path length on the conveying belt, without being limited by the cooling angle size and the cooling angle arc length of the cooling roller, so that the conveying speed of the rubber film on the conveying belt can be greatly increased, thereby greatly improving the flow casting operation efficiency of the flow casting machine; on the other hand, the rubber film can form a uniform rubber film surface pattern on the contact surface with the conveying belt; during the rubber film conveying process, the rubber film conveying environment temperature and other process parameters can be controlled to obtain a rubber film with more stable quality.

[0020] In addition, since the rubber film conveying belt passes through the conveying belt deviation rectifying device during the looped operation, the deviation rectifying rollers on the conveying belt deviation rectifying device are precisely and slightly adjusted in direction by means of the differential gear differential operation of the multi-tooth gear and the few-tooth gear, so that different tensioning forces are generated on both sides of the conveying belt, thereby adjusting the operation direction of the rubber film and keeping the operation path of the rubber film in the same straight line direction, which not only avoids the uneven film surface tensioning and wrinkling caused by the curved operation of the rubber film, but also avoids the increase of the cutting amount of the film edge caused by the deviation of the film edge of the rubber film, thereby effectively improving the rubber film yield and avoiding the waste of rubber film raw materials.

[0021] In addition, the molten extruded rubber film passes through the rubber film temperature control device with the rubber film conveying belt, the cooling and cooling speed of the rubber film can be adjusted and controlled by the heating or refrigeration device in the rubber film temperature control device, and the rubber film temperature control time is adjusted to create the best rubber film environment temperature; in addition, different temperature control sections can be arranged in the rubber film temperature control device to realize precise temperature control, so that the rubber film is modified in place, the coupling activation is sufficient, and the unevenness of the stress in each direction of the rubber film can be effectively eliminated, through the above-mentioned optimization of the rubber film setting temperature, the generation of wrinkles and burst, cracking and holes and other defects of the rubber film are completely avoided, thereby effectively improving and stabilizing the rubber film product quality while ensuring the flow casting production efficiency. The semiconductor refrigeration sheet is used as the refrigeration component, which has the advantages of high reliability, fast refrigeration and heating, high precision temperature control, fast response and high efficiency, can realize precise temperature control of the setting rubber film, and effectively ensures the quality of the rubber film product.

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

[0023] The application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] Figure 1 is a front view of a specific embodiment of the application of the precision temperature control and deviation correction belt type casting machine.

[0025] Figure 2 is Figure 1 is a schematic diagram of the running path of the adhesive film conveying belt and the adhesive film in the embodiment shown.

[0026] Figure 3 is Figure 1 is a schematic diagram of the cross-sectional structure of the adhesive film temperature control device in the embodiment shown.

[0027] Figure 4 is Figure 3 is a schematic diagram of the assembly structure of the semiconductor refrigeration sheet and the heat dissipation cabinet in the structure shown.

[0028] Figure 5 is Figure 1 is a schematic diagram of the structure of the conveying belt deviation correction device in the embodiment shown.

[0029] Figure 6 is Figure 5 is the A view of

[0030] Figure 7 is Figure 5 is a structural diagram of the deviation correction mounting seat in

[0031] Figure 8 is Figure 7 is the B view of

[0032] Figure 9 is Figure 8 is an enlarged view of part I in

[0033] Figure 10 is Figure 9 is a top view of

[0034] Figure 11 is Figure 5 is an installation structure diagram of the deviation correction roller sleeve in

[0035] Figure 12 is Figure 11 is a top view of

[0036] In the diagram, 1—mold support, 2—extrusion mold, 3—tension roller 1, 4—guide roller 1, 5—conveyor belt support, 6—support base, 7—conveyor belt correction device, 701—correction mounting base, 702—multi-tooth gear, 703—rack, 704—rack mounting pin, 705—sparse-tooth gear, 706—spindle drive pair, 707—support rod pin seat, 708—support rod pin, 709—support rod groove, 710—correction roller support rod, 711—spindle ball joint inner ring, 712—spindle ball joint outer ring, 713—correction roller spindle, 714—correction roller sleeve, 715—correction roller drive pair, 716—correction motor, 717—rack mounting groove, 71 8—Detection sensor, 8—Connecting rod, 9—Guide roller two, 10—Roller bracket, 11—Guide roller three, 12—Sliding ground rail, 13—Film, 14—Auxiliary cooling roller one, 15—Auxiliary cooling roller two, 16—Coating roller one, 17—Coating roller two, 18—Coating roller three, 19—Tensioning roller two, 20—Film temperature control device, 201—Temperature control box, 202—Electric heater, 203—Semiconductor cooling chip, 204—Blower, 205—Radiator, 206—Heat dissipation cabinet, 207—Temperature control chamber partition, 208—Air distribution plate, 209—Chiller, 210—Cold water control valve, 21—Guide roller four, 22—Film conveyor belt. Detailed Implementation

[0037] like Figure 1 , Figure 2 The precision temperature-controlled and belt-aligned casting machine shown includes a roller support 10 and a support base 6. The roller support 10 and the support base 6 are fixedly connected to each other by a connecting rod 8. The roller support 10 and the support base 6 are movably supported on a sliding rail 12 by rollers on their upper parts for adjustment and maintenance. A conveyor belt support 5 is also fixedly installed on the support base 6. The conveyor belt support 5 mainly includes support wall plates on both sides. Tensioning roller 1 3 and tensioning roller 2 19 are rotatably supported between the fixedly connected support wall plates. Tensioning roller 1 3 is rotatably supported on the two side wall plates of the conveyor belt support 5 by adjusting the tension of the conveyor belt through a tensioning slide. Guide roller 21 and guide roller 4 are rotatably supported between the two side wall panels of the conveyor belt support 5. A conveyor belt correction device 7 is also installed on the conveyor belt support 5. The conveyor belt correction device 7 has two parallel correction roller spindles 713 rotatably supported on its downward extending side. A correction roller sleeve 714 is rotatably fitted on the correction roller spindle 713.

[0038] The roller support 10 mainly comprises two side wall plates which are fixedly connected with each other, and the cooling roller three 18, the cooling roller two 17 and the cooling roller one 16 are rotatably supported on the two side wall plates of the roller support 10 from front to back through corresponding supporting bearings. The cooling roller three 18 and the cooling roller one 16 are respectively located on the two sides of the cooling roller two 17. The cooling roller three 18, the cooling roller two 17 and the cooling roller one 16 are all connected with corresponding circulating cooling water paths, that is, the cooling water enters the roller cooling cavity from one end of the roller, exchanges heat in the roller cooling cavity, and then flows out from the other end of the roller cooling cavity. The cooling roller two 17 located in the middle position is a steel roller, and a embossed pattern is formed on the outer cylinder surface of the steel roller, which corresponds or is the same as the embossed pattern of the rubber film conveying belt 22. The outer cylinder surface of the cooling roller three 18 and the cooling roller two 16 is covered with a rubber layer, and the material and structure of the rubber layer are the same as those of the prior art. The cooling roller three 18, the cooling roller two 17 and the cooling roller one 16 are all transmissionally connected with corresponding roller driving motors. Or at least one roller is transmissionally connected with a corresponding roller driving motor.

[0039] The guide roller two 9 and the guide roller three 11 are also rotatably supported between the two side wall plates of the roller support 10. The auxiliary cooling roller one 14 and the auxiliary cooling roller two 15 are also rotatably supported at the rear end of the roller support 10. The auxiliary cooling roller one 14 and the auxiliary cooling roller two 15 are driven by corresponding driving motors, and the auxiliary cooling roller one 14 and the auxiliary cooling roller two 15 are also connected with corresponding circulating cooling water paths.

[0040] The annular rubber film conveying belt 22 passes through 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, the guide roller three 11, the guide roller two 9, the guide roller four 21, the two deviation correction roller sleeves 714 of the conveying belt deviation correction device 7, the guide roller one 4 in sequence and returns to the tensioning roller one 3, forming a looped conveying belt structure. The rubber film conveying 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 two 17. Of course, the rubber film conveying belt 22 can also adopt a woven belt woven by fibers, and the belt surface pattern is also consistent with the cylinder surface pattern of the cooling roller two 17.

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

[0042] The molten adhesive film extruded from the extrusion nozzle of the extrusion die 2 enters the horizontal section of the adhesive film conveyor belt 22 and passes through the temperature control chamber of the adhesive film temperature control device 20 along with the adhesive film conveyor belt 22. Then, it passes through the rolling points of the opposing cooling rollers 17 and 18 and successively passes over the lower cylinder surface of the cooling roller 17 and the upper cylinder surface of the cooling roller 16. After passing over the lower cylinder surface of the auxiliary cooling roller 15 and the upper cylinder surface of the auxiliary cooling roller 14, it becomes a molded adhesive film with an embossed texture.

[0043] like Figure 3 The film temperature control device shown includes a temperature control box 201, which has a rectangular tube structure. Narrow inlet and outlet ports are respectively provided on the end plates at both ends of the rectangular tube structure of the temperature control box 201 for the film conveyor belt 22 and the film 13 on it to pass through and exit.

[0044] Two air-distributing perforated plates 208 are horizontally arranged at intervals within the cavity of the temperature control chamber 201, forming a horizontal channel between the two plates for the passage of the film conveyor belt 22 and the film 13. The upper air-distributing perforated plate 208 and the top wall of the temperature control chamber 201 form the upper temperature control cavity, and the lower air-distributing perforated plate 208 and the bottom wall of the temperature control chamber 201 form the lower temperature control cavity. Several circular through holes of the same diameter are evenly distributed on the air-distributing perforated plates 208.

[0045] Both the upper and lower temperature control chambers are divided into several temperature control unit chambers by temperature control chamber partitions 207. Each temperature control unit chamber is equipped with a blower 204 for blowing air into the unit chamber. A semiconductor cooling chip 203 and an electric heater 202 are respectively installed on both sides of the blower 204. The blower 204, semiconductor cooling chip 203, and electric heater 202 located in the upper temperature control unit chamber are installed on the top wall of the temperature control chamber 201, while the same components are installed on the bottom wall of the temperature control chamber 201 in the lower temperature control unit chamber.

[0046] The cold end of the thermoelectric cooler 203 faces the cavity of the corresponding temperature control unit. For example... Figure 4The hot end of the semiconductor refrigeration sheet 203 is directed to the outside of the cavity and is fixedly installed on the installation plane of the heat sink 205, and the other side of the heat sink 205 is provided with a plurality of heat dissipation fins extending into the heat sink cabinet 206, and the refrigerant water in the heat sink cabinet 206 is pure water or purified water. Each heat sink cabinet 206 is provided with a circulating water outlet and a circulating water inlet, the circulating water outlet is connected with the water inlet of the water chiller 209, and the circulating water inlet is connected with the water outlet of the water chiller 209. And its circulating water outlet is connected to the water chiller 209 through the cold water control valve 210; of course, the circulating water inlet can also be connected to the water chiller 209 through the cold water control valve 210. The cold water control valve 210 is an electromagnetic stop valve. The blower 204 is an axial flow fan, the water chiller 209 is a compression type water chiller, and the heat sink 205 is an aluminum heat sink with heat dissipation fins.

[0047] In the above structure, since the upper temperature control cavity and the lower temperature control cavity are each divided into a plurality of temperature control unit cavities, the adhesive film 13 on the adhesive film conveying belt 22 can be temperature controlled in sections, so that different heating and heating temperature parameter values can be implemented for different adhesive film material components to achieve ideal modification and activation effects. The number of temperature control unit cavities should be determined according to specific design conditions. The temperature control unit cavities can form uniform temperature control air flow through the uniformization effect of the chamber, and the temperature control air flow in the chamber blows to the adhesive film conveying belt 22 and the adhesive film 13 thereon through the uniform air hole plate 208, so that the temperature control air flow uniformly acts on the upper and lower surfaces of the adhesive film.

[0048] As shown in the figure Figure 5 Figure 12 As shown in the figure, the conveying belt deviation correcting device 7 includes a deviation correcting mounting seat 701 in a rectangular frame structure, which is fixedly installed on the conveying belt support 5 during installation. Two segments of rack 703 are installed on the opposite two frame beams of the deviation correcting mounting seat 701, so that four segments of rack 703 are installed on the deviation correcting mounting seat 701. A circular arc-shaped rack mounting waist groove 717 is arranged 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 is movably inserted through the rack mounting waist groove 717 and fixedly screwed to the frame beam of the deviation correcting mounting seat 701, and the pin body segment of the rack mounting pin 704 is sleeved with a sliding sleeve, so that the rack 703 can swing slightly relative to the frame beam of the deviation correcting mounting seat 701.

[0049] ​Two mutually parallel deviation roller supporting rods 710 and two mutually parallel deviation roller shafts 713 are arranged above the deviation mounting seat 701, and the deviation roller supporting rods 710 and the deviation shafts 713 are arranged perpendicularly to each other. The two ends of the deviation roller shafts 713 are hinged to the corresponding end of the deviation roller supporting rods 710 through a ball hinge structure, and the ball hinge structure comprises a shaft ball hinge inner ring 711 fixedly installed on the deviation roller shafts 713 and a shaft ball hinge outer ring 712 fixedly installed on the deviation roller supporting rods 710. The outer convex spherical surface of the shaft ball hinge inner ring 711 is slidingly supported on the concave spherical surface of the shaft ball hinge outer ring 712, and the shaft ball hinge inner ring 711 and the shaft ball hinge outer ring 712 are both made of organic wear-resistant materials such as nylon.

[0050] A plurality of gear 702 and a few gear 705 are fixedly installed on the shaft necks of the deviation roller supporting rods 710 extending out of the two ends of the deviation roller shafts 713, respectively. The two plurality of gears 702 on the two deviation shafts 713 are located on the same side, and the plurality of gears 702 on the same side are engaged with the rack 703 on the frame beam of the corresponding side deviation mounting seat 701, respectively. Similarly, the two few gears 705 on the other end of the two deviation shafts 713 are also engaged with the corresponding rack 703, respectively. In this embodiment, the number of teeth of the plurality of gear 702 is 46 teeth, and the number of teeth of the few gear 705 is 44 teeth. The number of teeth of the plurality of gear 702 is at least one more than the number of teeth of the few gear 705. When the deviation roller shafts (713) rotate, due to the difference in the number of teeth between the plurality of gear 702 and the few gear 705 at the two ends of the same deviation roller shaft (713), the axis of the deviation roller shaft (713) will appear clockwise or counterclockwise deviation micro swing with the forward or reverse rotation of the gear. Since the difference in the number of teeth of the plurality of gear 702 and the few gear 705 is very small, even one tooth, accurate deviation can be achieved.

[0051] The outer extension end of a deviation shaft 713 is connected in transmission with a deviation motor 716 through a deviation roller driving pair 715. The other same side outer extension end of the two deviation roller shafts 713 are connected in transmission with each other through a shaft transmission pair 706. The deviation roller driving pair 715 and the shaft transmission pair 706 are both synchronous toothed belt transmission pairs, and the deviation motor 716 is a servo motor.

[0052] A detection sensor 718 is installed on the frame of the deviation mounting seat 701, and the detection sensor 718 is an optical sensor for detecting the running edge position of the film 13 on the film conveying belt 22.

[0053] When the rubber film 13 deviates from the normal conveying path, the detection sensor 718 sends information to the deviation correction controller, the deviation correction controller instructs the deviation correction motor 716 to operate, the deviation correction motor 716 drives the two deviation correction roller shafts 713 through the deviation correction roller drive pair 715 and the core shaft transmission pair 706. Due to the tooth number difference between the multi-tooth gear 702 and the few-tooth gear 705 fixedly installed at both ends of the deviation correction shaft 713, the deviation correction shaft 713 is deflected, and the deviation correction effect of the rubber film conveying belt 22 and the rubber waist 13 thereon is achieved.

[0054] The preferred embodiments of the application disclosed above are only used to help explain the application, and many modifications and variations can be made according to the content of the specification. The specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the application, so that those skilled in the art can well understand and utilize the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the application.

Claims

1. A precision temperature-controlled and straightening belt casting machine, comprising an extrusion die (2), and cooling rollers one (16), two (17), and three (18) rotatably supported on a roller support (10), characterized in that: The roller support (10) and the conveyor belt support (5) are fixedly arranged together. Tension roller 1 (3) and tension roller 2 (19) are rotatably supported on the conveyor belt support (5). The conveyor belt support (5) is also equipped with a conveyor belt correction device (7) and a film temperature control device (20). A film conveyor belt (22) is wrapped around tension roller 1 (3), tension roller 2 (19), cooling roller 3 (18), cooling roller 2 (17), cooling roller 1 (16) and conveyor belt correction device (7). The conveyor belt correction device (7) includes a correction mounting base (701). A rack (703) is installed on each of the opposite sides of the correction mounting base (701). The multi-tooth gear (702) and the few-tooth gear (705) fixedly installed at both ends of the correction roller core shaft (713) are respectively connected to the corresponding teeth. The strips (703) mesh with each other, and the two ends of the correction roller spindle (713) are hinged to the correction roller support rod (710) on the corresponding side through the ball joint structure. The correction roller support rod (710) is movably supported on the correction mounting seat (701). The film temperature control device (20) includes a temperature control box (201). Two parallel air distribution plates (208) are fixedly installed in the temperature control box (201). The film conveyor belt (22) passes through the middle of the two spaced air distribution plates (208). The air distribution plates (208) form temperature control cavities with the top wall and bottom wall of the temperature control box (201) respectively. Each temperature control cavity is divided into several temperature control unit cavities by a temperature control partition (207). An electric heater (202), a semiconductor cooling chip (203) and a blower (204) are provided in the temperature control unit cavity. The first cooling roller (16) and the third cooling roller (18) are respectively located on the front and rear sides of the second cooling roller (17). The outer surface of the second cooling roller (17) is provided with embossed patterns. The film conveyor belt (22) is a mesh belt or a woven belt. The surface of the film conveyor belt (22) is provided with a pattern structure, which matches the embossed pattern on the second cooling roller (17). The molten film extruded from the extrusion nozzle of the extrusion die (2) enters the horizontal section of the film conveyor belt (22), and passes through the temperature control chamber of the film temperature control device (20) along with the film conveyor belt (22). Then, it passes through the rolling points of the two cooling rollers (17) and three cooling rollers (18) and successively passes over the lower cylinder surface of the two cooling rollers (17) and the upper cylinder surface of the one cooling roller (16).

2. The precision temperature-controlled and deviation-correcting belt casting machine according to claim 1, characterized in that: Auxiliary cooling roller 2 (15) and auxiliary cooling roller 1 (14) are also provided on the rear side of the cooling roller 1 (16), and the auxiliary cooling roller 2 (15) and auxiliary cooling roller 1 (14) are rotatably supported on the roller support (10); the extrusion die (2) is installed on the die support (1), and the extrusion die (2) is located above the front end of the film conveyor belt (22).

3. The precision temperature-controlled and deviation-correcting belt casting machine according to claim 1, characterized in that: The correction roller mandrel (713) and the correction roller support rod (710) are both two in number. The same end of the correction roller mandrel (713) is hinged to the correction roller support rod (710) on the same side through a corresponding ball joint structure. The correction roller mandrel (713) is rotatably supported by a correction roller sleeve (714), and the adhesive film conveyor belt (22) passes around the correction roller sleeve (714). The correction roller mandrel (713) is connected to the correction motor (716) for transmission. The number of teeth of the multi-tooth gear (702) and the few-tooth gear (705) differs by at least one tooth.

4. The precision temperature-controlled and deviation-correcting belt casting machine according to claim 1, characterized in that: The correction mounting base (701) has a rectangular frame structure, and a detection sensor (718) is installed on the correction mounting base (701); both ends of the rack (703) are provided with rack mounting grooves (717), and the rack mounting pin (704) moves through the rack mounting grooves (717) to install the rack (703) on the correction mounting base (701).

5. The precision temperature-controlled and deviation-correcting belt casting machine according to claim 1, 3, or 4, characterized in that: The ball joint structure includes an inner ring (711) of the mandrel ball joint fixedly installed on the mandrel (713) of the straightening roller, and an outer ring (712) of the mandrel ball joint fixedly installed on the support rod (710) of the straightening roller. The outer convex spherical surface of the inner ring (711) of the mandrel ball joint is slidably supported on the inner concave spherical surface of the outer ring (712) of the mandrel ball joint. Two parallel straightening roller mandrels (713) are connected by a mandrel transmission pair (706). The straightening roller mandrel (713) is connected to the straightening motor (716) by a straightening roller drive pair (715).

6. The precision temperature-controlled and deviation-correcting belt casting machine according to claim 1, 3, or 4, characterized in that: Both of the two correction roller support rods (710) are provided with support rod grooves (709). The support rod pin (708) passes through the support rod grooves (709) of the two correction roller support rods (710) to movably install the correction roller support rods (710) on the correction mounting base (701). The rack mounting groove (717) on the rack (703) is an arc-shaped through groove. The two rack mounting grooves (717) on the same rack (703) are located on the same circumference.

7. The precision temperature-controlled and deviation-correcting belt casting machine according to claim 1, characterized in that: The air distribution plate (208) has several through holes evenly distributed on its surface; the cold end of the semiconductor cooling chip (203) faces the cavity of the corresponding temperature control unit, the hot end of the semiconductor cooling chip (203) is fixed on the heat sink (205), and the heat dissipation fins of the heat sink (205) extend into the heat sink cabinet (206).

8. The precision temperature-controlled and deviation-correcting belt casting machine according to claim 7, characterized in that: The circulating water outlet of the heat sink (206) is connected to the water inlet of the chiller (209), and the circulating water inlet of the heat sink (206) is connected to the water outlet of the chiller (209).

9. The precision temperature-controlled and deviation-correcting belt casting machine according to claim 1, 7, or 8, characterized in that: The circulating water outlet and / or circulating water inlet of the heat sink (206) are connected to the corresponding port of the chiller (209) through the chilled water control valve (210).

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