Casting coating device for polycarbonate film
By designing a polycarbonate film cast coating device including a limiter, air pressure and supporting mechanism, the problems of reel movement, film cooling bulging and tail end support are solved, and the winding quality and film quality are improved. of finished product quality.
Patent Information
- Application Number
- CN202411712531.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-01-21
- Estimated Expiration
- 2044-11-27
AI Technical Summary
The existing polycarbonate film casting coating device is not convenient to limit the rolling barrel, which causes the rolling barrel to move easily when rolling, affecting the rolling quality; the polycarbonate film is prone to bulging when cooling; and The tail end of the membrane lacks support, which can easily support the bottom and cause pollution.
A polycarbonate membrane flowing device including the bottom plate, standing plate, wound motor, rotating motor, rotating motor, formation mechanism and restricted mechanism. The molding mechanism is used to heat and extract polycarbonate fluids, cool down to form a film and collect rolls; limit mechanisms can restrict the rolling tube by conducting columns, rotating convex lumps, and extruded springs; Wind tubes and cooling rolling rollers to prevent polycarbonate membranes from appearing drum bag; the trunk mechanism can ensure the stable roll at the end of the membrane through an electric push rod and reset spring.
The quality of the winding roll is improved through the limit of the rolling cylinder; the wind pressure mechanism effectively prevents the drum bag when the polycarbonate membrane is cooled; the trunk mechanism ensures that the end of the membrane is not dropped due to lack of support to avoid pollution.
Smart Images
Figure CN119328968A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of polycarbonate film production, in particular to a polycarbonate film casting coating device. Background Art
[0002] Polycarbonate film, also known as PC film, is a very important material in modern social production. It is widely used in production in various industries. In the production process of polycarbonate film, the polycarbonate film is usually processed by cast coating. The main steps are to extrude the polycarbonate particles into a film after hot melting, and then cool it to form a polycarbonate film.
[0003] However, the existing device is not convenient for limiting the winding drum, so that the winding drum is easy to move during winding, affecting the winding quality, and bulging is easy to occur when the polycarbonate film is cooled. After coating, the tail end of the polycarbonate film is easy to be contaminated due to lack of support. Summary of the invention
[0004] In order to overcome the shortcomings of the background technology, the present invention provides a polycarbonate film casting coating device which is convenient for limiting the coil drum, improves the winding quality, is not easy to cause bulging of the polycarbonate film when it is cooled, can support its tail end, and does not cause pollution.
[0005] The technical solution of the present invention is: a polycarbonate film casting coating device, comprising a bottom plate, a vertical plate fixedly connected to the bottom plate, a winding motor and a rotating motor fixedly connected to one side of the vertical plate, a molding mechanism is arranged on one side of the vertical plate, the molding mechanism is connected to both the winding motor and the rotating motor, the molding mechanism is used to heat and extrude the polycarbonate fluid, cool it to form a film and then rewind it, a limiting mechanism is arranged on the molding mechanism, the limiting mechanism is used to limit the coil drum to maintain the stability of the rewinding.
[0006] Furthermore, the forming mechanism includes a winding roller, which is rotatably connected to one side of the vertical plate, and the winding roller is connected to the power shaft of the winding motor. A groove is formed on the end of the winding roller away from the vertical plate, and a convex edge is provided on the side of the winding roller close to the winding motor. A heating extruder is fixedly connected to the side of the vertical plate away from the winding roller, a funnel is fixedly connected to the feed port on the upper part of the heating extruder, and a strip extrusion port is provided at the lower part of the heating extruder. A cooling roller is rotatably connected to the side of the vertical plate close to the heating extruder, and the cooling roller is connected to the output shaft of the rotating motor. A bevel shovel plate is fixedly connected to the bottom plate, and the bevel shovel plate contacts one side of the cooling roller. A curved guide plate is fixedly connected to the side of the bevel shovel plate away from the cooling roller. A support rod is fixedly connected to the vertical plate, and a guide roller is rotatably connected to the support rod.
[0007] Furthermore, the limiting mechanism includes a guide column, which is fixedly connected to a groove at one end of the winding roller, and two rotating protrusions are rotatably connected to the guide column, and the rotating protrusion has a convex surface on one side and a flat surface on the other side. A baffle is slidably connected to the guide column, and an extrusion spring is connected between the baffle and the winding roller, and the baffle is in contact with the two rotating protrusions. A pull plate is fixedly connected between the two rotating protrusions, and an elastic ring is fixedly connected to the side of the pull plate away from the guide column, and an extrusion ball is fixedly connected to the side of the elastic ring away from the pull plate.
[0008] Furthermore, it also includes a wind pressure mechanism, which is arranged on the vertical plate, and is used to smooth the polycarbonate film on the cooling roller. The wind pressure mechanism includes a support arm, and the support arm is fixedly connected to one side of the vertical plate. A blower is fixedly connected to one end of the support arm, and an air guide frame is fixedly connected to the air outlet of the blower. Three flat holes are opened at the lower part of the air guide frame, and six support plates are fixedly connected to the lower part of the air guide frame. Two of the support plates form a group, and a flat air spray tube is rotatably connected between the two support plates in each group. Each of the air-spraying flat tubes is respectively connected to the three flat holes at the bottom of the air-guide frame with a universal telescopic tube, a threaded rotating rod is rotatably connected to the vertical plate, a bidirectional thread is provided on the threaded rotating rod, a transmission assembly is connected between the threaded rotating rod and the cooling roller, two side rods are fixedly connected to one side of the air-guide frame, a rack long rod is slidably connected to the two side rods, a threaded plate is threadedly connected to the threaded rotating rod, the threaded plate is connected to the rack long rod, a gear is fixedly connected to one side of each of the air-spraying flat tubes, and the gear is meshed with the rack long rod.
[0009] Furthermore, the transmission assembly includes a driving pulley, a driven pulley and a transmission belt, wherein the driving pulley is connected to the cooling roller, the driven pulley is connected to the threaded rotating rod, and a transmission belt is wound between the driven pulley and the driving pulley.
[0010] Furthermore, it also includes a material supporting mechanism, which is arranged on one side of the vertical plate, and is used to lift the last part of the material. The material supporting mechanism includes a limiting frame, which is fixedly connected to one side of the vertical plate, and a sliding block is slidably connected to the limiting frame, and a reset spring is connected between the sliding block and the limiting frame; four round rods are fixedly connected to one side of the sliding block, one of the round rods is rotatably connected to a long roller, and the other three round rods are rotatably connected to short rollers; a rotation sensor is fixedly connected to the sliding block, and the rotation sensor is connected to one side of the long roller; an electric push rod is fixedly connected to the sliding block, and a friction block is fixedly connected to the telescopic rod of the electric push rod; a reset button is fixedly connected to the vertical plate, and the reset button is used to control the retraction and reset of the electric push rod.
[0011] The beneficial effects are as follows: 1. By limiting the position of the coil drum before winding, the coil drum is not likely to move during winding, thereby improving the quality of the coiled material.
[0012] 2. The blower will blow the wind out at high speed through the air guide frame and the air spray flat tube in turn. The rotation of the cooling roller will drive the threaded rotating rod to rotate through the transmission assembly. The rotation of the threaded rotating rod will drive the threaded plate and the rack long rod to move horizontally back and forth through the two-way thread. Then the horizontal reciprocating movement of the rack long rod will drive the gear and the air spray flat tube to swing back and forth. The reciprocating swing of the air spray flat tube will sweep the sprayed wind back and forth across the polycarbonate film on the surface of the cooling roller. Since the air outlet of the air spray flat tube is flat, the blown wind can squeeze out the bubbles between the polycarbonate film and the cooling roller like a hanging plate. Then the reciprocating wind can make the polycarbonate film fit the surface of the cooling roller more closely, making it less likely to bulge.
[0013] 3. When the polycarbonate film continues to be wound so that its tail end passes through the long roller, the polycarbonate film will no longer drive the long roller to rotate together, and the long roller will change from a rotating state to a stopped state, which will trigger the rotation sensor, so that the rotation sensor controls the electric push rod to extend, and the extension of the electric push rod will drive the friction block to squeeze the sides of two of the short rollers, so that the two short rollers will no longer rotate, so that the two short rollers will clamp the tail end of the polycarbonate film, and then because the winding roller continues to wind, it will pull the polycarbonate film, and then pull the two short rollers and the sliding block to move toward the direction of the winding roller, the reset spring is compressed, and when the sliding block moves horizontally to contact the reset button, the reset button is triggered, and the electric push rod is controlled to retract and reset, so that the two short rollers no longer clamp the tail end of the polycarbonate film, thereby completing the winding of the polycarbonate film, so that the tail end of the polycarbonate film that is clamped can be wound up so that the tail end of the polycarbonate film is not easy to fall to the ground due to lack of support, causing film pollution. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1It is a schematic diagram of the three-dimensional structure of the present invention.
[0015] Figure 2 It is a three-dimensional structural schematic diagram of the forming mechanism and the limiting mechanism of the present invention.
[0016] Figure 3 It is a three-dimensional structural schematic diagram of the forming mechanism and the rotating motor of the present invention.
[0017] Figure 4 It is a schematic diagram of the three-dimensional structure of the limiting mechanism of the present invention.
[0018] Figure 5 It is a schematic diagram of the cross-sectional three-dimensional structure of the winding roller of the present invention.
[0019] Figure 6 It is a schematic diagram of the three-dimensional structure of the wind pressure mechanism of the present invention.
[0020] Figure 7 It is a schematic diagram of the partial three-dimensional structure of the wind pressure mechanism of the present invention.
[0021] Figure 8 It is a schematic diagram of the cross-sectional three-dimensional structure of the air guide frame and the air spray flat pipe of the present invention.
[0022] Fig. 9 It is a schematic diagram of the three-dimensional structure of the supporting mechanism of the present invention.
[0023] Fig.10 It is a schematic diagram of the partial three-dimensional structure of the supporting mechanism of the present invention.
[0024] Fig.11 It is a partial three-dimensional structural schematic diagram of the material supporting mechanism of the present invention.
[0025] In the accompanying drawings: 1_bottom plate, 2_vertical plate, 3_winding motor, 4_rotating motor, 51_winding roller, 52_heating extruder, 53_funnel, 54_cooling roller, 55_inclined shovel plate, 56_arc guide plate, 57_support rod, 58_guide roller, 61_guide column, 62_rotating convex block, 63_baffle, 64_squeezing spring, 65_twist plate, 66_elastic ring, 67_squeezing ball, 71_support arm, 72_air blast Machine, 73_wind guide frame, 74_support plate, 75_air jet flat tube, 76_universal telescopic tube, 77_threaded rotating rod, 78_transmission assembly, 79_side rod, 710_rack long rod, 711_threaded plate, 712_gear, 81_limiting frame, 82_sliding block, 83_reset spring, 84_round rod, 85_long roller, 86_short roller, 87_rotation sensor, 88_electric push rod, 89_friction block, 810_reset button. DETAILED DESCRIPTION
[0026] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.
[0027] Example 1
[0028] A polycarbonate film casting coating device, such as Figure 1-11 As shown, it includes a base plate 1, to which a vertical plate 2 is fixedly connected, to which a winding motor 3 and a rotating motor 4 are fixedly connected on one side of the vertical plate 2, and a molding mechanism is arranged on one side of the vertical plate 2, and the molding mechanism is connected to both the winding motor 3 and the rotating motor 4, and the molding mechanism is used to heat and extrude the polycarbonate fluid, cool it to form a film and then rewind it, and a limiting mechanism is arranged on the molding mechanism, and the limiting mechanism is used to limit the coil drum to maintain the stability of the rewinding.
[0029] The forming mechanism includes a winding roller 51, which is rotatably connected to one side of the vertical plate 2, and the winding roller 51 is connected to the power shaft of the winding motor 3. The end of the winding roller 51 away from the vertical plate 2 is provided with a groove, and the side of the winding roller 51 close to the winding motor 3 is provided with a convex edge. A heating extruder 52 is fixedly connected to the side of the vertical plate 2 away from the winding roller 51, and a funnel 53 is fixedly connected to the feed inlet on the upper part of the heating extruder 52. A strip extrusion port is provided at the lower part of the heating extruder 52. The vertical plate 2 A cooling roller 54 is rotatably connected to the side close to the heating extruder 52, and the cooling roller 54 is connected to the output shaft of the rotating motor 4. The cooling roller 54 is used to rotate to cool and form the polycarbonate film cast thereon. A beveled shovel plate 55 is fixedly connected to the bottom plate 1, and the beveled shovel plate 55 is in contact with one side of the cooling roller 54. A curved guide plate 56 is fixedly connected to the side of the beveled shovel plate 55 away from the cooling roller 54. A support rod 57 is fixedly connected to the vertical plate 2, and a guide roller 58 is rotatably connected to the support rod 57.
[0030] The limiting mechanism includes a guide column 61, which is fixedly connected to a groove at one end of the winding roller 51. Two rotating protrusions 62 are rotatably connected to the guide column 61. The rotating protrusion 62 has a convex surface on one side and a flat surface on the other side. A baffle 63 is slidably connected to the guide column 61. An extrusion spring 64 is connected between the baffle 63 and the winding roller 51. The baffle 63 contacts the two rotating protrusions 62. A pull plate 65 is fixedly connected between the two rotating protrusions 62. An elastic ring 66 is fixedly connected to the side of the pull plate 65 away from the guide column 61, and an extrusion ball 67 is fixedly connected to the side of the elastic ring 66 away from the pull plate 65.
[0031] In actual work, the formed polycarbonate film is stored by winding on a reel. The reel is a hollow cylinder with openings at both ends. Initially, the extrusion spring 64 is in a compressed state. The operator first needs to turn the pull plate 65 90° to a direction perpendicular to the vertical plate 2, and then the pull plate 65 will drive the rotating protrusion 62 to rotate 90°. When the rotating protrusion 62 rotates, it will squeeze the baffle 63 to move a distance in the direction close to the winding motor 3. The extrusion spring 64 is compressed, so that the plane on one side of the rotating protrusion 62 contacts the baffle 63, which can maintain stability, and then the reel is placed on the winding The operator places the material drum on the roller 51 and aligns one side of the material drum with the convex edge of the winding roller 51. After the material drum is placed, the operator resets the trigger plate 65. The baffle plate 63 squeezes the rotating protrusion 62 to prevent it from rotating. After the trigger plate 65 is reset, the squeezing ball 67 squeezes one side of the material drum, and the elastic ring 66 is deformed, so that the material drum is limited. Then the operator starts the heating extruder 52, and then starts the rotating motor 4 and the winding motor 3. Then the operator pours the polycarbonate particles into the heating extruder 52 through the funnel 53. The polycarbonate particles are melted after passing through the heating extruder 52 and are discharged from the heating extruder. The polycarbonate film formed by cooling is extruded from the strip extrusion port at the lower part of the outlet 52, and the extruded molten polycarbonate flows downward to the surface of the cooling roller 54 and is cooled by the cooling roller 54 to form a polycarbonate film. Then, the cooling roller 54 is driven by the rotating motor 4 to rotate slowly. The slowly rotating cooling roller 54 drives the molten polycarbonate falling thereon to rotate toward the direction close to the inclined shovel plate 55. Then, the polycarbonate film formed by cooling is attached to the cooling roller 54. As the cooling roller 54 rotates continuously, the polycarbonate film is scooped up by the inclined shovel plate 55, so that the polycarbonate film is out of contact with the cooling roller 54, and then passes through the curved guide plate 5 6 continuously extends toward the direction of the winding roller 51, and the scooped polycarbonate film passes between the curved guide plate 56 and the guide roller 58, and then the operator pulls the polycarbonate film extending from between the curved guide plate 56 and the guide roller 58 to be wound on the winding roller 51, and then the winding roller 51 will rotate under the drive of the winding motor 3, and automatically wind the polycarbonate film on the winding drum. When winding, the polycarbonate film passes under the guide roller 58 and drives the guide roller 58 to rotate. After limiting the winding drum and then winding, the winding drum is not easy to move during winding, thereby improving the quality of the coiled material.
[0032] Example 2
[0033] On the basis of Example 1, Figure 6-8As shown, it also includes a wind pressure mechanism, which is arranged on the vertical plate 2, and is used to smooth the polycarbonate film on the cooling roller 54. The wind pressure mechanism includes a support arm 71, and the support arm 71 is fixedly connected to one side of the vertical plate 2. A blower 72 is fixedly connected to one end of the support arm 71, and an air guide frame 73 is fixedly connected to the air outlet of the blower 72. Three flat holes are opened at the lower part of the air guide frame 73, and six support plates 74 are fixedly connected to the lower part of the air guide frame 73. Two of the support plates 74 form a group, and a flat air pipe 75 is rotatably connected between the two support plates 74 of each group, and each of the flat air pipes 75 is respectively A universal telescopic tube 76 is connected between the three flat holes at the bottom of the air guide frame 73, a threaded rotating rod 77 is rotatably connected to the vertical plate 2, the threaded rotating rod 77 is provided with a bidirectional thread, a transmission assembly 78 is connected between the threaded rotating rod 77 and the cooling roller 54, two side rods 79 are fixedly connected to one side of the air guide frame 73, a rack long rod 710 is slidably connected to the two side rods 79, a threaded plate 711 is threadedly connected to the threaded rotating rod 77, the threaded plate 711 is connected to the rack long rod 710, and a gear 712 is fixedly connected to one side of each of the air spray flat tubes 75, and the gear 712 is meshed with the rack long rod 710.
[0034] The transmission assembly 78 includes a driving pulley, a driven pulley and a transmission belt, wherein the driving pulley is connected to the cooling roller 54, the driven pulley is connected to the threaded rotating rod 77, and a transmission belt is wound between the driven pulley and the driving pulley.
[0035] When the operator starts the winding motor 3 and the blower 72 at the same time, the blower 72 will blow the wind out at high speed through the air guide frame 73 and the air spray flat tube 75 in turn. The rotation of the cooling roller 54 will drive the threaded rotating rod 77 to rotate together through the transmission assembly 78. The rotation of the threaded rotating rod 77 will drive the threaded plate 711 and the rack long rod 710 to move horizontally back and forth through the two-way thread. Then the horizontal reciprocating movement of the rack long rod 710 will drive the gear 712 and the air spray flat tube 75 to swing back and forth. The universal telescopic tube 76 will adaptively bend and expand when the air spray flat tube 75 swings. The reciprocating swing of the air spray flat tube 75 will sweep the ejected wind back and forth across the polycarbonate film on the surface of the cooling roller 54. Since the air outlet of the air spray flat tube 75 is flat, the blown wind can squeeze out the bubbles between the polycarbonate film and the cooling roller 54 like a hanging plate. Then the reciprocating wind can make the polycarbonate film fit more closely to the surface of the cooling roller 54, making it less likely to bulge.
[0036] Example 3
[0037] On the basis of Example 2, Figure 9-11As shown, it also includes a material supporting mechanism, which is arranged on one side of the vertical plate 2. The material supporting mechanism is used to lift the last part of the material. The material supporting mechanism includes a limiting frame 81, and the limiting frame 81 is fixedly connected to one side of the vertical plate 2. A sliding block 82 is slidably connected in the limiting frame 81, and a return spring 83 is connected between the sliding block 82 and the limiting frame 81. Four round rods 84 are fixedly connected to one side of the sliding block 82, and a long roller 85 is rotatably connected to one of the round rods 84. In addition, The three round rods 84 are rotatably connected with short rollers 86, the sliding block 82 is fixedly connected with a rotation sensor 87, the rotation sensor 87 is connected to one side of the long roller 85, the sliding block 82 is fixedly connected with an electric push rod 88, the rotation sensor 87 is used to control the extension of the electric push rod 88, the telescopic rod of the electric push rod 88 is fixedly connected with a friction block 89, the vertical plate 2 is fixedly connected with a reset button 810, the reset button 810 is used to control the contraction and reset of the electric push rod 88.
[0038] When the operator pulls the polycarbonate film extending from between the curved guide plate 56 and the guide roller 58, the polycarbonate film is passed through between the long roller 85 and one of the short rollers 86 and between the other two short rollers 86 in sequence, and then the three short rollers 86 and one long roller 85 are in contact with the polycarbonate film, and then the polycarbonate film is wound on the winding roller 51 for winding. During winding, the polycarbonate film drives the short rollers 86 and the long rollers 85 to rotate together. When the tail end of the polycarbonate film separates from the cooling roller 54 and comes out from between the curved guide plate 56 and the guide roller 58, the tail end of the polycarbonate film continues to move upward between the long roller 85 and one of the short rollers 86. When the polycarbonate film continues to be wound so that its tail end passes through the long roller 85, the polycarbonate film no longer drives the long roller 85 to rotate together, and the long roller 85 changes from a rotating state to a stopped state, which triggers the rotation sensor 87, so that the rotation sensor The device 87 controls the electric push rod 88 to extend. The extension of the electric push rod 88 drives the friction block 89 to squeeze the sides of two short rollers 86, so that the two short rollers 86 no longer rotate, so that the two short rollers 86 clamp the tail end of the polycarbonate film, and then because the winding roller 51 continues to wind, it will pull the polycarbonate film, and then pull the two short rollers 86 and the sliding block 82 to move toward the direction of the winding roller 51, and the reset spring 83 is compressed. When the sliding block 82 moves horizontally to contact the reset button 810, the reset button 810 is triggered, and the electric push rod 88 is controlled to retract and reset, so that the two short rollers 86 no longer clamp the tail end of the polycarbonate film, so that the polycarbonate film is completed. The winding, and then the sliding block 82 is reset under the action of the reset spring 83, so that the tail end of the polycarbonate film clamped can be wound up so that the tail end of the polycarbonate film is not easy to fall to the ground due to lack of support, causing film pollution.
[0039] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A polycarbonate film casting coating device, characterized in that: The invention comprises a bottom plate (1), a vertical plate (2) fixedly connected to the bottom plate (1), a winding motor (3) and a rotating motor (4) fixedly connected to one side of the vertical plate (2), a molding mechanism arranged on one side of the vertical plate (2), the molding mechanism being connected to both the winding motor (3) and the rotating motor (4), the molding mechanism being used to heat and extrude a polycarbonate fluid, cool it to form a film and then rewind it, a limiting mechanism being arranged on the molding mechanism, the limiting mechanism being used to limit the position of a reel drum and maintain the stability of rewinding.
2. A polycarbonate film casting coating device as claimed in claim 1, characterized in that: The forming mechanism comprises a winding roller (51), the winding roller (51) is rotatably connected to one side of the vertical plate (2), the winding roller (51) is connected to the power shaft of the winding motor (3), a groove is provided on the end of the winding roller (51) away from the vertical plate (2), a convex edge is provided on the side of the winding roller (51) close to the winding motor (3), a heating extruder (52) is fixedly connected to the side of the vertical plate (2) away from the winding roller (51), a funnel (53) is fixedly connected to the feed inlet on the upper part of the heating extruder (52), and a heating extruder (52) is provided at the lower part of the heating extruder (52). A strip extrusion outlet is provided on the part, and a cooling roller (54) is rotatably connected to the side of the vertical plate (2) close to the heating extruder (52), and the cooling roller (54) is connected to the output shaft of the rotating motor (4). A bevel shovel plate (55) is fixedly connected to the bottom plate (1), and the bevel shovel plate (55) is in contact with one side of the cooling roller (54). A curved guide plate (56) is fixedly connected to the side of the bevel shovel plate (55) away from the cooling roller (54). A support rod (57) is fixedly connected to the vertical plate (2), and a guide roller (58) is rotatably connected to the support rod (57).
3. A polycarbonate film casting coating device as claimed in claim 2, characterized in that: The limiting mechanism comprises a guide column (61), wherein the guide column (61) is fixedly connected to a groove at one end of the winding roller (51), and two rotating protrusions (62) are rotatably connected to the guide column (61), and the rotating protrusions (62) are in a structure with a convex surface on one side and a flat surface on the other side. A baffle (63) is slidably connected to the guide column (61), and a squeezing spring (64) is connected between the baffle (63) and the winding roller (51). The baffle (63) contacts the two rotating protrusions (62), and a trigger plate (65) is fixedly connected between the two rotating protrusions (62). A side of the trigger plate (65) away from the guide column (61) is fixedly connected to an elastic ring (66), and a squeezing ball (67) is fixedly connected to the side of the elastic ring (66) away from the trigger plate (65).
4. A polycarbonate film casting coating device as claimed in claim 3, characterized in that: The invention also includes a wind pressure mechanism, which is arranged on the vertical plate (2) and is used to smooth the polycarbonate film on the cooling roller (54). The wind pressure mechanism includes a support arm (71), which is fixedly connected to one side of the vertical plate (2). One end of the support arm (71) is fixedly connected to a blower (72). An air guide frame (73) is fixedly connected to the air outlet of the blower (72). Three flat holes are opened at the lower part of the air guide frame (73). Six support plates (74) are fixedly connected to the lower part of the air guide frame (73). Two support plates (74) form a group. A flat air pipe (75) is rotatably connected between the two support plates (74) in each group. Each flat air pipe (75) is respectively connected to the air guide frame. A universal telescopic tube (76) is connected between the three flat holes at the bottom (73); a threaded rotating rod (77) is rotatably connected to the vertical plate (2); the threaded rotating rod (77) is provided with a bidirectional thread; a transmission assembly (78) is connected between the threaded rotating rod (77) and the cooling roller (54); two side rods (79) are fixedly connected to one side of the air guide frame (73); a rack long rod (710) is slidably connected to the two side rods (79); a threaded plate (711) is threadedly connected to the threaded rotating rod (77); the threaded plate (711) is connected to the rack long rod (710); a gear (712) is fixedly connected to one side of each of the air spray flat tubes (75); the gear (712) is meshed with the rack long rod (710).
5. A polycarbonate film casting coating device as claimed in claim 4, characterized in that: The transmission assembly (78) includes a driving pulley, a driven pulley and a transmission belt, wherein the driving pulley is connected to the cooling roller (54), the driven pulley is connected to the threaded rotating rod (77), and a transmission belt is wound between the driven pulley and the driving pulley.
6. A polycarbonate film casting coating device as claimed in claim 4, characterized in that: The machine also includes a material supporting mechanism, which is arranged on one side of the vertical plate (2) and is used to support the last part of the material. The material supporting mechanism includes a limiting frame (81), which is fixedly connected to one side of the vertical plate (2), a sliding block (82) is slidably connected inside the limiting frame (81), a return spring (83) is connected between the sliding block (82) and the limiting frame (81), and one side of the sliding block (82) is fixedly connected to four round rods (84), one of which is rotatably connected to a A long roller (85), the other three round rods (84) are rotatably connected to short rollers (86), the sliding block (82) is fixedly connected to a rotation sensor (87), the rotation sensor (87) is connected to one side of the long roller (85), the sliding block (82) is fixedly connected to an electric push rod (88), the telescopic rod of the electric push rod (88) is fixedly connected to a friction block (89), and the vertical plate (2) is fixedly connected to a reset button (810), the reset button (810) is used to control the electric push rod (88) to retract and reset.
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