Automatic film threading casting machine with s-shaped transfer roller

Abstract

This invention relates to the field of casting machine technology and discloses an automatic film-threading casting machine with S-shaped conveyor rollers. The machine body includes a drying initiation section, a heating section, and a drying termination section, arranged sequentially from left to right. Several sets of S-rolls are equidistantly installed within the heating section. Each set of S-rolls is mounted on a side frame at both ends via bearing seats. A drive sprocket is installed at both ends of each set of S-rolls, and adjacent drive sprockets are connected by a drive chain. This invention bonds the film to the first adhesive portion on the traction roller. The drive chain moves clockwise, and the traction roller moves along an S-shaped path from left to right, pulling and moving the film so that it wraps around the sets of S-rolls while simultaneously heating and drying it. This solves the problems of low efficiency and poor results associated with manual film threading and eliminates the need for pre-cooling and post-heating the equipment, thus preventing resource waste.

Description

Technical Field

[0001] This invention relates to the field of casting machine technology, and in particular to an automatic film-threading casting machine with an S-shaped conveyor roller. Background Technology

[0002] With the application of various high-precision technologies such as semiconductors, the demand for casting machines in related production is becoming increasingly widespread. Casting machines are suitable for manufacturing various film products such as ceramic substrates, TPU films, and PE breathable films. The core process of casting film is to pressurize the molten polymer through a screw extruder and extrude it through a die to form a continuous melt flow. The melt is then coated onto the surface of the substrate, and after drying and peeling, it forms a green tape or plastic film.

[0003] For existing film production applications, the produced films need to undergo a heating and drying process (300-400 degrees Celsius). However, with conventional technology, during the initial startup of the casting machine or during a shutdown for maintenance, manual cooling of the film is required, followed by film splicing, and then heating the temperature back up to around 300 degrees Celsius for drying. This process presents the following technical problems: First, manual film splicing requires considering the film's elongation / flatness requirements; the stretching speed cannot be too fast, and flatness must be maintained during the splicing process. Therefore, this process consumes significant time and labor costs. Second, since manual film splicing on the entire production line requires the equipment to be cooled down and then heated up, this process wastes a lot of resources.

[0004] In summary, considering that the existing facilities cannot meet the needs of operation, we propose an S-shaped conveyor roller automatic film casting machine. Summary of the Invention

[0005] The main objective of this invention is to provide an automatic film casting machine with an S-shaped conveyor roller, which can effectively solve the problems in the background art.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] An automatic film casting machine with S-type conveyor rollers includes a casting machine body, which includes a drying initiation section, a heating section, and a drying termination section, arranged sequentially from left to right. The drying initiation section includes an initiation conveyor roller, which is used to connect the film produced by the extruder to the casting machine body. Several sets of S-rolls are equidistantly installed in the heating section, preferably 30-60 sets. Both ends of each set of S-rolls are mounted on a side frame via bearing seats. Both ends of each set of S-rolls are equipped with drive sprockets, and adjacent drive sprockets are connected for transmission via drive chains.

[0008] As a preferred embodiment of the S-shaped conveyor roller automatic film casting machine of the present invention, wherein: the inner sides of both sets of the transmission guide chains are connected to elastic clamps, each elastic clamp including a connecting seat, a curved spring steel part and a clamping groove, the connecting seat is fixed to the inner side of the transmission guide chain, the connecting seat is provided with two sets of curved spring steel parts, the two sets of curved spring steel parts are integrally connected, and a clamping groove acting on the traction roller is formed between the two sets of curved spring steel parts, and a first adhesive part for fixing the film is provided at the center of the outer surface of the traction roller, the traction roller moves from left to right along the S-shaped path of the transmission guide chain, follows the S-roller of the heating section, and pulls and moves the film while performing heating and drying treatment.

[0009] In a preferred embodiment of the S-type conveyor roller automatic film casting machine of the present invention, the drying terminal section includes a receiving seat, and two sets of symmetrically arranged support brackets are provided inside the receiving seat. A driven roller, a driving roller, and a guide roller are arranged between the two sets of support brackets. Both ends of the driven roller, the driving roller, and the guide roller are provided with a transmission sprocket for connecting the transmission guide chain. The driven roller is located above the driving roller, and the guide roller is located to the left of the driving roller. One end of the driving roller passes through the support bracket and is connected to a drive motor.

[0010] As a preferred embodiment of the S-type conveyor roller automatic film casting machine of the present invention, wherein: an adsorption roller is provided between the two sets of the bearing supports and obliquely above the driven roller, and a second adhesive part for fixing the film is provided at the center of the outer surface of the adsorption roller, the adsorption roller adsorbs the film on the passing traction roller using the second adhesive part, and two lifting and separating structures are symmetrically installed at both ends of the adsorption roller.

[0011] As a preferred embodiment of the S-type conveyor roller automatic film casting machine of the present invention, each set of lifting and separating structures includes a connecting shaft, a swing arm, a swing groove, a hinge plate, a cylinder rod, a lifting cylinder, a hinge frame, and a limiting rod. The two ends of the adsorption roller are fixedly connected to the connecting shaft. The connecting shaft is rotatably disposed at the left end of the swing arm. The right end of the swing arm is rotatably connected to the support bracket. A swing groove is opened at the lower middle position of the swing arm. A hinge plate is rotatably disposed in the swing groove. The hinge plate is welded to the upper end of the cylinder rod. The cylinder rod extends upward from the inside of the lifting cylinder. A hinge frame is disposed at the lower end of the lifting cylinder. The lifting cylinder rotates around the hinge frame. The hinge frame is mounted on the support bracket. A limiting rod acting on the lower end face of the swing arm is welded on the support bracket.

[0012] As a preferred embodiment of the S-type conveyor roller automatic film casting machine of the present invention, a cutting structure is provided between the two sets of support brackets and below the adsorption roller. The cutting structure includes a rodless cylinder, a positioning block, a cylinder displacement seat, an extension plate, and an electric cutter. Both ends of the rodless cylinder are riveted to the support brackets through the positioning block. A cylinder displacement seat is movably provided on the rodless cylinder. An extension plate is installed outside the cylinder displacement seat. An electric cutter for cutting the film is installed on the extension plate. The cutting position is located in the area between the driven roller and the driving roller.

[0013] As a preferred embodiment of the S-type conveyor roller automatic film casting machine of the present invention, wherein: a rejection structure is installed on the inner side of the two sets of bearing supports and in the area between the cutting structure and the guide roller. The number of rejection structures is two sets. The rejection structure includes a shock-absorbing connecting seat, a connecting housing, a stamping cylinder, a double-headed stamping rod, and a pressure plate. The shock-absorbing connecting seat is riveted to the bearing support. A connecting housing is welded to one end of the shock-absorbing connecting seat. A stamping cylinder is installed inside the connecting housing. A double-headed stamping rod is arranged downwardly inside the stamping cylinder. A pressure plate is welded to the lower end of the double-headed stamping rod. The pressure plate contacts the traction roller during the downward pressing process, removing it from the clamping grooves of the two sets of elastic clamps and dropping it into the tray. The tray is located at the bottom of the receiving seat.

[0014] As a preferred embodiment of the S-type conveyor roller automatic film casting machine of the present invention, wherein: the inner sides of both sets of transmission guide chains are welded with support platforms, and each set of support platforms is equipped with a clamping cylinder that acts on the traction roller. The clamping cylinder includes a miniature clamping cylinder, a telescopic rod, a clamping sleeve, and an anti-slip contact surface. The miniature clamping cylinder extends horizontally outward from the inside of the support platform. The telescopic rod is movably arranged outward from the inside of the miniature clamping cylinder. The end of the telescopic rod is connected to the clamping sleeve. The clamping sleeve is for the end of the traction roller to extend into, and the two fit together in size. The inside of the clamping sleeve is provided with an anti-slip contact surface that acts on the end face of the traction roller.

[0015] As a preferred embodiment of the S-type conveyor roller automatic film casting machine of the present invention, a hydraulic cylinder is vertically installed at the bottom left of the heating section. A hydraulic lifting rod is installed upward inside the hydraulic cylinder. A curved bracket is installed at the upper end of the lifting rod. A traction roller is horizontally placed inside the curved bracket. The curved bracket lifts the traction roller to a horizontal position between two sets of clamping cylinders.

[0016] As a preferred embodiment of the S-type conveyor roller automatic film casting machine of the present invention, a horizontal blade is installed on the roller surface of the traction roller and on the side of the first adhesive joint.

[0017] In a preferred embodiment of the S-type conveyor roller automatic film casting machine of the present invention, the telescopic rod and the clamping sleeve are connected by an annular seat. The annular seat has a rotating groove for the clamping sleeve to move inside. A turntable is fixed to the end of the clamping sleeve. A damping bearing is sleeved around the outer side of the turntable and connected to the rotating groove by the damping bearing. A large gear is also sleeved on the turntable. A small gear is meshed on the upper end of the large gear. The small gear is sleeved on the output shaft of the servo motor. The small gear is located inside the motor housing. The motor housing is fixed to the outside of the annular seat. The end face of the servo motor penetrates the motor housing.

[0018] This invention provides an improved S-type conveyor roller automatic film casting machine, which has the following significant improvements and advantages compared with the prior art:

[0019] (1) The film and the first adhesive part on the traction roller are bonded together. The transmission guide chain moves clockwise, and the traction roller moves from left to right along the S-shaped path with the transmission guide chain. It follows the S roller of the heating section to pull and move the film, so that the film is wrapped around several sets of S rollers. At the same time, it is heated and dried. On the one hand, it solves the technical problems of low efficiency and poor effect of manual film threading. On the other hand, it eliminates the need to cool down the equipment first and then heat it up, thus solving the problem of resource waste.

[0020] (2) First, retract the cylinder rods of the two sets of lifting cylinders, and swing the arm downward around the hinge frame until it is blocked by the two sets of limit rods. At this time, the second adhesive part of the adsorption roller is pressed down onto the film to stick the film. With the help of the cutting structure, the film and the traction roller are automatically separated to ensure the normal use of the film.

[0021] (3) Simultaneously start two sets of stamping cylinders to drive the pressure plate to descend rapidly. The pressure plate generates a stamping force on the traction roller between the two sets of elastic clamps, so that the force on the traction roller is transferred to the curved spring steel part. The curved spring steel part deforms instantly, causing the traction roller to fall down from the clamping groove and be received by the tray, thus achieving the purpose of automatically disassembling the traction roller, saving time and effort.

[0022] (4) Start the hydraulic cylinder, the hydraulic lifting rod moves upward, the curved bracket lifts the traction roller to the horizontal position between the two sets of clamping cylinders, and then the two sets of micro clamping cylinders work. On the one hand, the telescopic rod extends until the traction roller is inserted into the clamping sleeve and abuts against the anti-slip contact surface. The two sets of clamping cylinders act in opposite directions to clamp the traction roller, improve the fixing effect, avoid manual installation, and save time and effort. On the other hand, when it is necessary to disassemble the traction roller, the two sets of telescopic rods are directly retracted and the traction roller is disengaged from the clamping sleeve to achieve the purpose of automatic unloading. There is no need to install the rejection structure, which reduces the structural complexity of the equipment.

[0023] (5) Start the servo motor immediately. After a series of transmissions, the turntable moves around the damping bearing in the turntable groove. The two sets of clamping sleeves drive the traction roller to rotate at a certain angle to wind the film. During the winding process, the film comes into contact with the extended horizontal blade and is directly cut by the horizontal blade to achieve separation. There is no need to install a cutting structure, which reduces the structural complexity of the equipment, saves space, and leaves less film on the traction roller, thus reducing waste. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of an S-shaped conveyor roller automatic film casting machine in one direction according to the present invention;

[0025] Figure 2 This is a schematic diagram of the overall structure of an S-shaped conveyor roller automatic film casting machine from another direction according to the present invention;

[0026] Figure 3 This is a schematic diagram of the specific structure of the S-roller of the present invention;

[0027] Figure 4 This is a schematic diagram showing the installation position of the traction roller of the present invention;

[0028] Figure 5 This is a schematic diagram of the specific structure of the elastic clamp of the present invention;

[0029] Figure 6 This is a schematic diagram of the material receiving seat of the present invention from one direction;

[0030] Figure 7 This is a schematic diagram of the material receiving seat of the present invention from another direction;

[0031] Figure 8 This is a schematic diagram of the specific structure of the improved separation structure of the present invention;

[0032] Figure 9 This is a schematic diagram of the specific structure of the cutting structure of the present invention;

[0033] Figure 10 This is a schematic diagram of the specific structure of the elimination structure of the present invention;

[0034] Figure 11 This is a schematic diagram of the lifting structure of the traction roller in Embodiment 2 of the present invention;

[0035] Figure 12 This is a schematic diagram of the specific structure of the cylinder clamping device in Embodiment 2 of the present invention;

[0036] Figure 13 This is a schematic diagram showing the installation position of the horizontal blade in Embodiment 3 of the present invention;

[0037] Figure 14 This is a schematic diagram of the internal structure of the annular seat in Embodiment 3 of the present invention.

[0038] In the diagram: 1. Casting machine body; 2. Drying start section; 3. Heating section; 4. Drying end section; 5. Receiving seat; 10. Starting conveyor roller; 11. S-roller; 12. Drive sprocket; 13. Drive guide chain; 14. Traction roller; 15. Side frame; 20. Elastic clamp; 21. Connecting seat; 22. Curved spring steel part; 23. Clamping groove; 31. Bearing bracket; 32. Adsorption roller; 33. Driven roller; 34. Driving roller; 35. Drive motor; 36. Guide roller; 37. Second bonding part; 38. Tray; 40. Lifting and separating structure; 41. Coupling shaft; 42. Swing arm; 43. Swing groove; 44. Hinge plate; 45. Cylinder rod; 46. Lifting cylinder; 47. Hinge frame; 48. Limiting device. 50. Rod; 51. Cutting structure; 52. Rodless cylinder; 53. Positioning block; 54. Cylinder displacement seat; 55. Extension plate; 66. Electric cutter; 67. Removal structure; 68. Shock-absorbing connecting seat; 69. Connecting housing; 60. Stamping cylinder; 61. Double-headed stamping rod; 62. Pressure plate; 73. Support platform; 74. Hydraulic cylinder; 75. Hydraulic lifting rod; 86. Curved bracket; 87. Clamping cylinder; 88. Miniature clamping cylinder; 99. Telescopic rod; 90. Clamping sleeve; 91. Anti-slip contact surface; 92. Horizontal blade; 93. Ring seat; 94. Rotary groove; 95. Turntable; 96. Damping bearing; 97. Large gear; 98. Small gear; 99. Servo motor; 99. Motor housing. Detailed Implementation

[0039] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0040] Example 1

[0041] like Figures 1-10 As shown, this embodiment provides an S-type conveyor roller automatic film casting machine, including a casting machine body 1. The casting machine body 1 includes a drying start section 2, a heating section 3, and a drying end section 4, which are arranged sequentially from left to right. The drying start section 2 includes a start conveyor roller 10, which is used to connect the film produced by the extruder to the casting machine body 1.

[0042] Within the heating section 3, several sets of S-rollers 11 are installed at equal intervals. Each set of S-rollers 11 is mounted on the side frame 15 at both ends via bearing seats. Each set of S-rollers 11 has a drive sprocket 12 installed at both ends. Adjacent drive sprockets 12 are connected by a drive chain 13 (the shape of the drive chain 13 is designed according to the actual situation). Figure 3 As shown.

[0043] Furthermore, the inner surfaces of both sets of transmission chains 13 are connected to elastic clamps 20, such as... Figure 3 and Figure 4 As shown.

[0044] Specifically, the elastic clamp 20 includes a connecting seat 21, a curved spring steel part 22, and a clamping groove 23, such as Figure 5 As shown.

[0045] In this embodiment, the connecting seat 21 is fixed on the inner side of the transmission guide chain 13. The connecting seat 21 is provided with two sets of curved spring steel parts 22. The curved spring steel parts 22 have deformation and recovery performance. The two sets of curved spring steel parts 22 are connected in one piece. A clamping groove 23 acting on the traction roller 14 is formed between the two sets of curved spring steel parts 22. In the initial state, the groove opening faces upward.

[0046] The traction roller 14 has a first adhesive part for fixing the film at the center of its outer surface. The traction roller 14 moves from left to right along the S-shaped path of the transmission guide chain 13, and extends along the S-roller 11 of the heating section 3 to pull and move the film while simultaneously heating and drying it.

[0047] Furthermore, the drying terminal section 4 includes a receiving seat 5. Inside the receiving seat 5, two sets of symmetrically arranged support brackets 31 are provided. Between the two sets of support brackets 31, a driven roller 33, a driving roller 34, and a guide roller 36 (all connected via bearing seats) are arranged. Both ends of the driven roller 33, driving roller 34, and guide roller 36 are provided with drive sprockets 12 for connecting to the drive chain 13. The driven roller 33 is located above the driving roller 34, and the guide roller 36 is located to the left of the driving roller 34. One end of the driving roller 34 passes through the support bracket 31 and is connected to a drive motor 35. Figure 2 , Figure 6 and Figure 7 As shown.

[0048] Furthermore, an adsorption roller 32 is arranged between the two sets of support brackets 31 and obliquely above the driven roller 33. A second adhesive portion 37 for fixing the film is provided near the center of the outer surface of the adsorption roller 32. The adsorption roller 32 uses the second adhesive portion 37 to adsorb the film on the passing traction roller 14. Lifting and separating structures 40 are symmetrically installed at both ends of the adsorption roller 32. Figure 6 and Figure 7 As shown.

[0049] Specifically, each lifting and separating structure 40 includes a connecting shaft 41, a swing arm 42, a swing groove 43, a hinge plate 44, a cylinder rod 45, a lifting cylinder 46, a hinge frame 47, and a limiting rod 48, such as... Figure 8 As shown.

[0050] In this embodiment, the two ends of the adsorption roller 32 are fixedly connected to the connecting shaft 41. The connecting shaft 41 is rotatably disposed at the left end of the swing arm 42. The right end of the swing arm 42 is rotatably connected to the bearing bracket 31. A swing groove 43 is provided at the lower middle position of the swing arm 42. A hinge piece 44 is rotatably disposed in the swing groove 43. The hinge piece 44 is welded to the upper end of the cylinder rod 45. The cylinder rod 45 extends upward from the inside of the lifting cylinder 46.

[0051] In this embodiment, a hinge frame 47 is provided at the lower end of the lifting cylinder 46. The lifting cylinder 46 rotates around the hinge frame 47. The hinge frame 47 is mounted on the bearing bracket 31. A limiting rod 48 acting on the lower end face of the swing arm 42 is welded on the bearing bracket 31 to limit and stop movement.

[0052] Furthermore, a cutting structure 50 is provided between the two sets of support brackets 31 and below the adsorption roller 32 (the specific installation position of the cutting structure 50 is designed according to the actual situation), such as... Figure 6 and Figure 7 As shown.

[0053] Specifically, the cutting structure 50 includes a rodless cylinder 51, a positioning block 52, a cylinder displacement seat 53, an extension plate 54, and an electric cutter 55, such as... Figure 9 As shown.

[0054] In this embodiment, both ends of the rodless cylinder 51 are riveted together by positioning blocks 52 and bearing brackets 31. A cylinder displacement seat 53 is movably disposed on the rodless cylinder 51. An extension plate 54 is installed outside the cylinder displacement seat 53. An electric cutter 55 for cutting film is installed on the extension plate 54. The cutting position is located in the area between the driven roller 33 and the driving roller 34.

[0055] Furthermore, a rejection structure 60 is installed on the inner side of the two sets of support brackets 31, in the area between the cutting structure 50 and the guide roller 36, such as... Figure 6 and Figure 7 As shown.

[0056] Specifically, the elimination structure 60 includes a shock-absorbing connecting seat 61, a connecting housing 62, a stamping cylinder 63, a double-headed stamping rod 64, and a pressure plate 65 (the specific installation position of the elimination structure 60 is designed according to the actual situation and needs), such as Figure 10 As shown.

[0057] In this embodiment, the shock-absorbing connecting seat 61 is riveted to the bearing bracket 31. A connecting housing 62 is welded to one end of the shock-absorbing connecting seat 61. A stamping cylinder 63 is installed inside the connecting housing 62. A double-headed stamping rod 64 is arranged downward inside the stamping cylinder 63. A pressure plate 65 is welded to the lower end of the double-headed stamping rod 64. During the downward pressing process, the pressure plate 65 contacts the traction roller 14 and removes it from the clamping groove 23 of the two sets of elastic clamps 20, so that it falls into the tray 38. The tray 38 is located at the bottom of the receiving seat 5.

[0058] In this embodiment, when the casting machine is first started or stopped for maintenance, the film produced by the extruder is first guided by the starting conveyor roller 10 and bonded to the first adhesive part on the traction roller 14. At this time, the drive motor 35 is started, and through the cooperation of several sets of transmission sprockets 12, the transmission guide chain 13 moves clockwise. The traction roller 14 moves from left to right along the S-shaped path with the transmission guide chain 13, following the S-roller 11 of the heating section 3, and pulls the film to move, so that the film is wrapped around several sets of S-rollers 11, and is heated and dried at the same time.

[0059] When the traction roller 14 carrying the film passes the driven roller 33 and the driving roller 34 in sequence and moves to the underside of the rejection structure 60 (at this time, the opening direction of the two sets of elastic clamps 20 is downward), the cylinder rods 45 of the two sets of lifting cylinders 46 are first retracted, and the hinge plate 44 drives the swing arm 42 to swing downward around the hinge frame 47 until it is blocked by the two sets of limit rods 48. At this time, the second adhesive part 37 of the adsorption roller 32 is pressed down on the film to adhere the film.

[0060] Then, the rodless cylinder 51 is started, and the cylinder displacement seat 53 moves linearly from one end of the rodless cylinder 51 to the other end. The electric cutter 55 is used to cut the film in this area, so that the film on the traction roller 14 is separated and the film is successfully threaded.

[0061] Finally, both sets of stamping cylinders 63 are activated simultaneously. The double-headed stamping rod 64 drives the pressure plate 65 to descend rapidly. The pressure plate 65 generates a stamping force on the traction roller 14 between the two sets of elastic clamps 20, causing the force on the traction roller 14 to be transferred to the curved spring steel part 22. The curved spring steel part 22 deforms instantaneously, and the opening of the clamping groove 23 becomes larger, causing the traction roller 14 to fall down from the clamping groove 23 and be received by the tray 38.

[0062] Furthermore, the adsorption roller 32 has two forms. The first type of adsorption roller 32 only serves to temporarily fix the film. It works with the cutting structure 50 to separate the traction roller 14 from the film, and then transfers the film to the interior of the subsequent processing mechanism. The second type of adsorption roller 32 is designed directly as a winding roller with a winding motor, which can directly perform continuous winding operations on the film after it has been threaded through.

[0063] Example 2

[0064] Based on Embodiment 1, when using the elastic clamp 20, the traction roller 14 still needs to be manually inserted into the elastic clamp 20. This is time-consuming and laborious. After repeated use, the elastic clamp 20 is prone to fatigue and elasticity loss, ultimately resulting in poor clamping effect. To solve the above technical problems, we welded support platforms 70 to the inner sides of both sets of transmission guide chains 13. Each support platform 70 has a clamping cylinder 80 that acts on the traction roller 14 installed inside it. Figures 11-12 As shown.

[0065] Specifically, the clamping cylinder 80 includes a miniature clamping cylinder 81, a telescopic rod 82, a clamping sleeve 83, and an anti-slip contact surface 84.

[0066] In this embodiment, the miniature clamping cylinder 81 extends horizontally outward from the inside of the support platform 70. A telescopic rod 82 is movably arranged outward from the inside of the miniature clamping cylinder 81. A clamping sleeve 83 is connected to the end of the telescopic rod 82. The end of the traction roller 14 is inserted into the clamping sleeve 83. The two fit each other in size and have a smooth contact surface, which facilitates insertion and removal. The inside of the clamping sleeve 83 is provided with an anti-slip contact surface 84 that interacts with the end face of the traction roller 14. Anti-slip texture is provided on the anti-slip contact surface 84.

[0067] Furthermore, a hydraulic cylinder 71 is vertically installed at the bottom left of the heating section 3 (the installation position of the hydraulic cylinder 71 is designed according to the actual situation and needs), and a hydraulic lifting rod 72 is installed inside the hydraulic cylinder 71 that moves upward.

[0068] The upper end of the hydraulic lifting rod 72 is equipped with a curved bracket 73 with a curved cross section. A traction roller 14 is horizontally placed inside the curved bracket 73. The curved bracket 73 supports the traction roller 14 to rise to a horizontal position between the two sets of clamping cylinders 80.

[0069] In this embodiment, the traction roller 14 is first placed roughly centered inside the curved bracket 73. Then, the hydraulic cylinder 71 is activated, and the hydraulic lifting rod 72 moves upward. The curved bracket 73 lifts the traction roller 14 precisely to the horizontal position between the two sets of clamping cylinders 80. At this time, the two sets of micro clamping cylinders 81 are activated, and the telescopic rod 82 extends, driving the clamping sleeve 83 to approach the two ends of the traction roller 14 until the traction roller 14 is inserted into the clamping sleeve 83 and comes into contact with the anti-slip contact surface 84. The two sets of clamping cylinders 80 act in opposite directions to clamp the traction roller 14, improving the fixing effect. When it is necessary to disassemble the traction roller 14, the two sets of telescopic rods 82 are directly retracted, and the traction roller 14 is released from the clamping sleeve 83, automatically falling off without restraint, thus achieving the purpose of automatic unloading.

[0070] Example 3

[0071] Based on Embodiments 1 and 2, the film on the traction roller 14 needs to be cut using a separately installed cutting structure 50. This increases manufacturing and maintenance costs and equipment complexity, while also occupying excessive space. Furthermore, the film remaining on the traction roller 14 after cutting by the cutting structure 50 is relatively long, resulting in some waste. To solve these technical problems, a horizontal blade 90 is installed on the roller surface of the traction roller 14 and on the side of the first adhesive joint. Figures 13-14 As shown.

[0072] Furthermore, the telescopic rod 82 and the clamping sleeve 83 are connected by an annular seat 91. The annular seat 91 has a rotating groove 92 inside for the clamping sleeve 83 to move. A turntable 93 is fixed to the end of the clamping sleeve 83. A damping bearing 94 is sleeved around the outside of the turntable 93. The damping bearing 94 is connected to the rotating groove 92. The damping bearing 94 has a certain damping force to prevent the turntable 93 and the traction roller 14 from rotating due to external forces.

[0073] Among them, a large gear 95 is also sleeved on the turntable 93 of one of the ring seats 91. A small gear 96 is meshed on the upper end of the large gear 95. The small gear 96 is sleeved on the output shaft of the servo motor 97. The small gear 96 is located inside the motor housing 98. The motor housing 98 is fixed on the outside of the ring seat 91. The end face of the servo motor 97 is set through the motor housing 98.

[0074] In this embodiment, as soon as the traction roller 14 passes the adsorption roller 32, the servo motor 97 is immediately started, the pinion 96 rotates, and the large gear 95 rotates through meshing and deceleration, so that the turntable 93 moves around the damping bearing 94 in the rotating groove 92. The two sets of clamping sleeves 83 drive the traction roller 14 to rotate at a certain angle to wind the film. During the winding process, the film comes into contact with the extended horizontal blade 90 and is directly cut by the horizontal blade 90 to achieve separation.

[0075] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0076] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An S-type conveyor roller automatic film casting machine, comprising a casting machine body (1), characterized in that: The casting machine body (1) includes a drying start section (2), a heating section (3) and a drying end section (4). Several sets of S rollers (11) are installed at equal intervals in the heating section (3). Each set of S rollers (11) is equipped with a drive sprocket (12) at both ends. Adjacent drive sprockets (12) are connected and driven by a drive chain (13). The inner sides of the two sets of drive chains (13) are connected with fixing parts for positioning traction rollers (14). The outer surface of the traction roller (14) is provided with a first adhesive part for fixing the film at the center. The traction roller (14) moves from left to right along the S-shaped path of the drive chain (13), following the S rollers (11) of the heating section (3), and pulls the film. The drying terminal section (4) includes a receiving seat (5). Two sets of support brackets (31) are symmetrically arranged inside the receiving seat (5). An adsorption roller (32) is arranged between the two sets of support brackets (31) and obliquely above the driven roller (33). A second adhesive part (37) for fixing the film is arranged near the center of the outer surface of the adsorption roller (32). Lifting and separation structures (40) are symmetrically installed at both ends of the adsorption roller (32). Each of the lifting and separating structures (40) includes a connecting shaft (41). The two ends of the adsorption roller (32) are fixedly connected to the connecting shaft (41). The connecting shaft (41) is rotatably disposed at the left end of the swing arm (42). A swing groove (43) is provided at the lower middle position of the swing arm (42). A hinge piece (44) is rotatably disposed in the swing groove (43). The hinge piece (44) is welded to the upper end of the cylinder rod (45). The cylinder rod (45) extends upward from the inside of the lifting cylinder (46). A hinge frame (47) is provided at the lower end of the lifting cylinder (46). A limiting rod (48) acting on the lower end face of the swing arm (42) is welded on the bearing bracket (31). A rejection structure (60) is installed on the inner side of the two sets of bearing supports (31) in the area between the cutting structure (50) and the guide roller (36). The rejection structure (60) includes a shock-absorbing connecting seat (61), a connecting housing (62), a stamping cylinder (63), a double-headed stamping rod (64), and a pressure plate (65). The shock-absorbing connecting seat (61) is riveted to the bearing support (31), and the connecting housing (62) is welded to one end of the shock-absorbing connecting seat (61). A stamping cylinder (63) is installed inside the connecting housing (62). A double-headed stamping rod (64) is installed inside the stamping cylinder (63) and moves downward. A pressure plate (65) is welded to the lower end of the double-headed stamping rod (64). The pressure plate (65) contacts the traction roller (14) during the downward pressing process, and removes it from the clamping groove (23) of the two sets of elastic clamps (20) and drops it into the tray (38). The tray (38) is located at the bottom of the receiving seat (5). The fixing component is an elastic clamp (20), which includes a connecting seat (21), a curved spring steel part (22), and a clamping groove (23). The connecting seat (21) is fixed on the inner side of the transmission guide chain (13). The connecting seat (21) has two sets of curved spring steel parts (22) inside. The two sets of curved spring steel parts (22) are integrated and connected together. A clamping groove (23) acting on the traction roller (14) is formed between the two sets of curved spring steel parts (22).

2. The automatic film-casting machine with S-shaped conveyor rollers according to claim 1, characterized in that: The drying start section (2), heating section (3) and drying end section (4) are arranged sequentially from left to right. The drying start section (2) includes a start conveyor roller (10). The start conveyor roller (10) is used to connect the film produced by the extruder to the casting machine body (1). Both ends of each set of S rollers (11) are mounted on the side frame (15) through bearing seats. A driven roller (33), a driving roller (34), and a guide roller (36) are arranged between the two sets of bearing supports (31). Both ends of the driven roller (33), the driving roller (34), and the guide roller (36) are provided with a transmission sprocket (12) for connecting the transmission guide chain (13). The driven roller (33) is located above the driving roller (34), and the guide roller (36) is located to the left of the driving roller (34). One end of the driving roller (34) passes through the bearing support (31) and is connected to a drive motor (35).

3. The automatic film-casting machine with S-shaped conveyor rollers according to claim 2, characterized in that: A cutting structure (50) is provided between the two sets of support brackets (31) and below the adsorption roller (32). The cutting structure (50) includes a rodless cylinder (51), a positioning block (52), a cylinder displacement seat (53), an extension plate (54), and an electric cutter (55). Both ends of the rodless cylinder (51) are riveted to the support bracket (31) through the positioning block (52). A cylinder displacement seat (53) is movably provided on the rodless cylinder (51). An extension plate (54) is installed outside the cylinder displacement seat (53). An electric cutter (55) for cutting the film is installed on the extension plate (54). The cutting position is located in the area between the driven roller (33) and the driving roller (34).

4. The automatic film-casting machine with S-shaped conveyor rollers according to claim 1, characterized in that: The fixing component is a combination of a support platform (70) and a clamping cylinder (80). Each support platform (70) is equipped with a clamping cylinder (80) that acts on the traction roller (14). The clamping cylinder (80) includes a miniature clamping cylinder (81), a telescopic rod (82), a clamping sleeve (83), and an anti-slip contact surface (84). The miniature clamping cylinder (81) extends horizontally outward from the inside of the support platform (70). The telescopic rod (82) is movably arranged outward from the inside of the miniature clamping cylinder (81). The end of the telescopic rod (82) is connected to the clamping sleeve (83). The clamping sleeve (83) is for the end of the traction roller (14) to extend into. The two fit each other in size. The inside of the clamping sleeve (83) is provided with an anti-slip contact surface (84) that acts on the end face of the traction roller (14).

5. The automatic film-threading casting machine with S-shaped conveyor rollers according to claim 4, characterized in that: A hydraulic cylinder (71) is vertically installed at the bottom left of the heating section (3). A hydraulic lifting rod (72) is installed inside the hydraulic cylinder (71) and moves upward. A curved bracket (73) is installed at the upper end of the hydraulic lifting rod (72). A traction roller (14) is placed horizontally inside the curved bracket (73). The curved bracket (73) lifts the traction roller (14) to rise to the horizontal position between the two sets of clamping cylinders (80).

6. The automatic film-threading casting machine with S-shaped conveyor rollers according to claim 5, characterized in that: A horizontal blade (90) is installed on the roller surface of the traction roller (14) and on the side of the first adhesive part. During the rotation of the traction roller (14), the horizontal blade (90) contacts the film and cuts the film.

7. An automatic film-casting machine with an S-shaped conveyor roller according to claim 6, characterized in that: The telescopic rod (82) and the clamping sleeve (83) are connected by an annular seat (91). The annular seat (91) has a rotating groove (92) for the clamping sleeve (83) to move inside. A turntable (93) is fixed at the end of the clamping sleeve (83). A damping bearing (94) is sleeved around the outside of the turntable (93). The damping bearing (94) and the rotating groove (92) are connected. A large gear (95) is also sleeved on the turntable (93) of one set of annular seats (91). A small gear (96) is meshed on the upper end of the large gear (95). The small gear (96) is sleeved on the output shaft of the servo motor (97). The small gear (96) is located inside the motor housing (98).

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