Film automatic temperature control tensioning type feeding and conveying device

Abstract

The invention provides a thin film automatic temperature control tensioning type feeding and conveying device, which belongs to the technical field of thin film conveying and comprises a main body, a transmission mechanism and a tensioning mechanism, a guide roller and a hollow cylinder are fixedly connected into the main body, and a conveying belt is rotationally connected into the main body; the transmission mechanism comprises a Y-shaped plate, a toothed plate, a gear shaft and a cam plate, the outer surface of the cam plate is in a protruding shape, and the side, away from the toothed plate, of the Y-shaped plate is rotationally connected with a limiting frame; the tensioning mechanism comprises a swing plate, a rectangular groove, a guide plate, a balancing weight, a hollow frame and a sliding plate. When gas in a T-shaped disc of the rotating mechanism is extracted, a thin film on the surface of the T-shaped disc can be adsorbed through a round hole in an arc-shaped plate, an inner frame is pulled forwards through a limiting frame, the adsorbed thin film is driven by the arc-shaped plate to slide forwards, the thin film is tensioned, the tension of the thin film during transportation is increased, and the conveying efficiency of the thin film is improved. Therefore, the film is recovered to a relatively stable state, and the phenomenon of film looseness caused by sudden decrease of tension is reduced.

Description

Technical Field

[0001] The invention belongs to the technical field of film conveying, and in particular relates to an automatic temperature-controlling and tensioning film feeding and conveying device. Background Art

[0002] In the film processing, packaging, printing and other links, the transportation of film is a key step. With the development of automation technology, the transportation of film is mostly carried out by conveyor belt transmission. When the conveyor belt is running, it will drive the film for transportation under the friction of its surface texture or coating. In order to ensure production efficiency and product quality, the film needs to maintain stable tension and temperature during the transportation process.

[0003] The utility model patent with authorization announcement number CN211769233U discloses a film conveying platform, including a chassis and a table top, a first negative pressure groove and a first air suction hole are opened on the chassis, the first air suction hole is connected to the first negative pressure groove, the table top is sealed on the chassis to enclose the first negative pressure groove to form a first negative pressure cavity, a plurality of second air suction holes are opened on the table top, the second air suction holes are connected to the first negative pressure cavity, a plurality of first pressure reducing grooves are opened on the surface of the table top, the plurality of first pressure reducing grooves are distributed near the discharge end of the table top, and the length direction of the first pressure reducing grooves is perpendicular to the transportation direction of the film. This patent opens a plurality of first pressure reducing grooves on the surface of the table near the discharge end of the table, so that when the film moves above the first pressure reducing grooves, the suction force of the second air suction holes on the film is reduced or disappears, so that the film is partially flattened under the action of traction force, which effectively solves the technical problem that the film output by the film conveying platform is prone to defects such as creeping lines and oblique wrinkles. However, this patent cannot solve the problem of film relaxation and deviation during transportation due to sudden changes in tension during transportation.

[0004] That is to say, in the prior art, the tension of the film during transportation is basically controlled by an electric tensioning device. Since the film is transported at a relatively fast speed and the tension change is instantaneous, when the tension of the film suddenly changes during transportation, it is difficult for the existing electric tensioning device to make instantaneous adjustments, which can easily lead to the film becoming loose during transportation due to the sudden change in tension. In addition, the existing equipment usually relies on sensors and other sensing components to prevent the film from deviating, which makes the control procedure of the entire equipment complicated, affecting the film transportation efficiency while also affecting the product quality of the film. Summary of the invention

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide an automatic temperature-controlled tensioning feeding and transportation device for a film, which effectively solves the problem that in the prior art, the tension of the film during transportation is basically controlled by an electric tensioning device. Since the transportation speed of the film during transportation is relatively fast and the tension change produced is instantaneous, when the tension of the film during transportation suddenly changes, it is difficult for the existing electric tensioning device to make instantaneous adjustments, which can easily lead to the film becoming loose during transportation due to the sudden change in tension. In addition, the existing equipment usually relies on sensors and other inductive components to prevent the film from deviating, which makes the control program of the entire equipment complicated, affecting the film transportation efficiency and the product quality of the film.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a film automatic temperature control tension type feeding and transportation device, comprising a main body, a transmission mechanism and a tensioning mechanism; three guide rollers are fixedly connected to the inside of the main body, a hollow cylinder is fixedly connected to the inside of the main body, a sliding groove is provided on the side wall of the main body, a heating rod is fixedly connected to the inside of the hollow cylinder, two cross plates are fixedly connected to the inside of the hollow cylinder, the bottom outer wall of the hollow cylinder is open, and a conveyor belt is rotatably connected to the inside of the main body; the transmission mechanism comprises a Y-shaped plate rotatably connected to the side of the main body close to the guide roller, the outer surface of the Y-shaped plate is rotatably connected to a toothed plate, and the side wall of the toothed plate A semicircular groove is provided, and a plurality of teeth are fixedly connected to the top outer wall of the semicircular groove, and a gear shaft is meshingly connected to the side wall of the teeth, and a cam plate is fixedly connected to the side of the gear shaft away from the gear plate, and the outer surface of the cam plate is convex, and the side of the Y-shaped plate away from the gear plate is rotatably connected to a limited position frame; the tensioning mechanism includes a swinging plate fixedly connected between the two gear plates, a rectangular groove is provided on the top of the swinging plate, and two guide plates are fixedly connected to the bottom outer wall of the swinging plate, and a plurality of counterweights are slidably connected to the side of the swinging plate close to the guide plate, and two hollow frames are fixedly connected to the top of the swinging plate, and a sliding plate is slidably connected to the inside of the hollow frame.

[0007] Preferably, the sliding plate is rotatably connected to an intermediate plate on one side close to the Y-shaped plate, and the intermediate plate is rotatably connected to the Y-shaped plate on one side away from the sliding plate, the side wall of the sliding plate is provided with a triangular groove, the top of the hollow frame is fixedly connected to a limiting strip, the triangular groove is rotatably connected to a rotating plate on one side close to the Y-shaped plate, the rotating plate is rotatably connected to a right-angle plate on one side close to the rectangular groove, the right-angle plate passes through the outer wall of the hollow frame on one side close to the rectangular groove and extends to the outside, the extending end of the right-angle plate is fixedly connected to a serrated disk, and a pushing plate is provided on the side of the serrated disk away from the rotating plate, the top of the pushing plate is slidably connected to the bottom of the limiting strip, the side of the pushing plate close to the main body is fixedly connected to a return spring, the side of the return spring away from the pushing plate is fixedly connected to the inside of the main body, and the top of the swinging plate is fixedly connected to a limiting axis.

[0008] Preferably, a rotating mechanism is provided inside the rectangular groove, and the rotating mechanism includes an inner frame slidably connected to the side of the limit frame away from the Y-shaped plate, and three gear shafts are rotatably connected inside the inner frame, and an obtuse-angled plate is fixedly connected to the side of the gear shaft close to the middle of the inner frame, and the side of the gear shaft away from the obtuse-angled plate penetrates to the outer wall of the inner frame and extends to the outside, and a T-shaped plate is rotatably connected between the three obtuse-angled plates, and a plurality of square grooves are provided on the outer surface of the T-shaped plate, and an exhaust pipe is slidably connected to the outer surface of the plurality of square grooves, and one end of the exhaust pipe is away from the T-shaped plate The outer wall of the outer tube is connected to the bottom of the hollow frame, and the exhaust pipe is connected to the interior of the hollow frame. The outer surface of the inner frame is slidably connected to an outer tube. A plurality of rectangular grooves 2 are provided inside the outer tube on a side close to the inner frame. A plurality of auxiliary teeth are fixedly connected to the side walls of the rectangular grooves 2. The side walls of the auxiliary teeth are meshed with the gear shaft 2. An elongated groove is provided on the outer wall of the bottom of the outer tube. The bottom of the inner frame is fixedly connected to a limiting plate. An end of the limiting plate away from the inner frame passes through the outer wall of the elongated groove and is slidably connected to the interior of the guide plate.

[0009] Preferably, an auxiliary mechanism is provided on the side of the outer cylinder away from the Y-shaped plate, and the auxiliary mechanism includes a plurality of spring rods arranged and connected between the two outer cylinders, and the side of the spring rod close to the outer cylinder is slidably connected to a C-shaped frame, and the side of the C-shaped frame away from the spring rod is rotatably connected to the side wall of the outer cylinder, and the side of the C-shaped frame close to the T-shaped disk is fixedly connected to a hollow block, and a plurality of adsorption holes are provided on the top of the hollow block, and the side of the adsorption holes away from the T-shaped disk penetrates to the outer wall of the C-shaped frame, and the inside of the hollow block is slidably connected to a trapezoidal plate, and the side of the trapezoidal plate close to the spring rod penetrates to the outer wall of the hollow block and extends to the outer wall, and the extended end of the trapezoidal plate is rotatably connected to an elastic triangular plate, and the side of the elastic triangular plate away from the trapezoidal plate is fixedly connected to the side wall of the C-shaped frame, and the side wall of the C-shaped frame is provided with a plurality of arc plates.

[0010] Preferably, the side wall of the main body is provided with a sliding mechanism, and the sliding mechanism includes a rotating shaft slidably connected to the inside of the sliding groove, and the outer surface of the rotating shaft is provided with a bidirectional thread groove, and an insertion rod 1 is slidably connected to the inside of the bidirectional thread groove, and the end of the insertion rod 1 away from the bidirectional thread groove is fixedly connected to a gear ring, the outer surface of the gear ring is meshed with the top of the gear plate, and the gear ring is rotatably connected to the side wall of the main body on the side close to the main body.

[0011] Preferably, the outer surface of the rotating shaft is fixedly connected with an insertion rod 2, and two semicircular rings are provided on the side of the rotating shaft close to the hollow cylinder, and a reset spring 2 is fixedly connected between the two semicircular rings. The bottoms of the two semicircular rings are rotatably connected to the bottom inner wall of the hollow cylinder, and a pushing frame is provided at the bottom of the semicircular rings. The top of the pushing frame contacts the outer surface of the semicircular rings, and the bottom of the pushing frame penetrates to the bottom outer wall of the hollow cylinder and extends to the outside. The extended end of the pushing frame is fixedly connected with a long rod, and the end of the long rod away from the pushing frame contacts the raised part on the cam plate.

[0012] Preferably, a shaking mechanism is provided inside the hollow tube, and the shaking mechanism includes a fan tube rotatably connected to the side wall of the limit frame, the inner wall of the fan tube is provided with two bidirectional thread grooves, the inner wall of the fan tube is rotatably connected to a conical tube, and the conical tube is rotatably connected to a rotating sleeve on the side close to the bidirectional thread groove.

[0013] Preferably, the rotating sleeve is internally rotatably connected to a push rod, an end of the push rod away from the middle of the conical tube penetrates through the outer wall of the fan tube and contacts the inner wall of the semicircular ring, a side of the push rod close to the guide roller is fixedly connected to a tension spring, a side of the tension spring away from the push rod contacts the inner wall of the fan tube, and the conical tube is open on a side close to the heating rod.

[0014] Preferably, the side wall of the conical cylinder is provided with a moving mechanism, and the moving mechanism includes an L-rod fixedly connected to the opening of the conical cylinder, and a limiting rod is fixedly connected to the side of the L-rod away from the conical cylinder, and the outer surface of the limiting rod is rotatably connected to a guide frame, and the guide frame is slidably connected to the bottom inner wall of the hollow cylinder.

[0015] The present invention also provides a method for using a film automatic temperature control tension type feeding and transporting device, which includes the following methods: a method S1 for preventing the film from relaxing due to a sudden decrease in tension and a method S2 for preventing the film from deviating; The method S1 for preventing the film from relaxing due to a sudden decrease in tension of the film comprises the following steps: S11, placing the film roll on the topmost guide roller, then passing one end of the film through other guide rollers and the limit shaft in sequence and placing it on the conveyor belt, then adding a counterweight block at the bottom of the swing plate as required, starting the heating rod to control the temperature, and starting the conveyor belt inside the main body at the same time. When the conveyor belt is running, the film will be transported forward under the friction of its surface texture or coating; S12, when the tension of the film decreases during transportation, the position of the counterweight block will rise, and the swing plate will rotate clockwise at this time, and the gear shaft and the cam plate will be driven to rotate through the several teeth inside the gear plate, which will push the protrusion of the Y-shaped plate and squeeze it. After being squeezed, the Y-shaped plate will rotate counterclockwise, and the sliding plate will be pulled forward inside the hollow frame through the middle plate, so that the gas between the sliding plate and the hollow frame will be sucked. When the gas is sucked, the gas inside the T-shaped plate is extracted through the exhaust pipe, and the film on its surface is adsorbed through the circular holes on the arc plate; S13, when the Y-shaped plate rotates counterclockwise, the inner frame is pulled backward through the limit frame, and the inner frame drives the adsorbed film to slide forward through the arc plate, so that the distance between the adsorbed film and the film roll on the topmost guide roller is increased, the film is tightened, the tension of the film during transportation is increased, and the film is restored to a relatively stable state, thereby reducing the film relaxation phenomenon caused by the sudden decrease of tension; The method S2 for preventing the film from deviating comprises the following steps: S21, when the film recovers to a stable state under its own tension, the Y-shaped plate rotates clockwise to reset, and pushes the inner frame to slide through the limit frame. When the inner frame slides, it will contact the side wall of the push plate. At the same time, when the Y-shaped plate rotates, it will push the sliding plate to reset through the middle plate. The rotating plate drives the right-angle plate connected to it to rotate. When the right-angle plate rotates, it drives the serrated disk to rotate, and the serrated surface of the right-angle plate drives the push plate. After the push plate is pushed, the T-shaped disk moves inside the inner frame, and drives the outer cylinder to slide through multiple obtuse-angle plates connected to it; S22, when the T-shaped plate pushes the obtuse plate, it will also rotate slightly inside the inner frame. The sliding of the T-shaped plate will squeeze the multiple arc plates. After the arc plates are squeezed, the middle part of the arc plates will push the middle part of the film to form a state of central bulge. At the same time, when the obtuse plate drives the gear shaft 2 to rotate, the rotation of the gear shaft 2 will drive the outer cylinder to slide. When the outer cylinder slides, it will push the C-shaped frame to slide relatively. Then, under the state of its own tension during film transportation, it will drive the swing plate to shake. When the swing plate shakes, it will cause the outer cylinder to slide slightly. When When the outer cylinder slides toward the arc plate, the raised arc plate in the middle will squeeze the elastic triangular plate. After being squeezed, the elastic triangular plate will push the trapezoidal plate to slide inside the hollow block. Then, when the outer cylinder drives the C-shaped frame to reset, the raised state of the arc plate will be eliminated, and the trapezoidal plate will slide inside the hollow block and absorb the external film through the adsorption holes. Then, when the C-shaped frame is reset, it will pull the bottom of both sides of the film to slide, thereby maintaining the stability and continuity of the film during the conveying process and reducing the deviation and offset caused by tension changes.

[0016] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention provides an automatic temperature-controlled tensioning feeding and transportation device for thin films. Due to the unique position setting of the counterweight block, the smoothness of the transmission is ensured. When the film tension suddenly decreases and causes the film to relax, through the setting of the transmission mechanism, tensioning mechanism, rotating mechanism, inner frame and arc plate, the gas inside the T-shaped disk will adsorb the film on its surface through the circular holes on the arc plate when being extracted. When the Y-shaped plate rotates counterclockwise, the inner frame will be pulled forward through the limit frame. When the inner frame is pulled, it will drive the adsorbed film to slide forward through the arc plate, thereby increasing the distance between the adsorbed film and the film roll on the topmost guide roller, and the film is tightened, increasing the tension of the film during transportation, so that it can be restored to a relatively stable state, reducing the film relaxation phenomenon caused by the sudden decrease in tension, and improving the quality of the film product.

[0017] (2) The present invention provides an automatic temperature-controlled tensioning feeding and transporting device for a film. After the film is relaxed and restored, the transmission mechanism, tensioning mechanism, rotating mechanism and auxiliary mechanism are set. When the T-shaped plate is used to push the obtuse-angle plate to rotate, the sliding of the T-shaped plate will squeeze the multiple arc plates. After the arc plates are squeezed, the middle part of the arc plates will push the middle part of the film to form a state where the middle part is raised. Then, when the outer cylinder drives the C-shaped frame to reset, the raised state of the arc plates will be eliminated. The trapezoidal plates will slide inside the hollow block and absorb the external film through the adsorption holes. Then, when the C-shaped frame is reset, the bottom of both sides of the film will be pulled to slide. Therefore, the stability and continuity of the film during transportation can be maintained, and the deviation and offset caused by tension changes can be reduced.

[0018] (3) The present invention provides an automatic temperature-controlled tensioning feeding and transporting device for a film. The rotation of the fan cylinder drives the guide frame to slide back and forth through the deflected conical cylinder and the L-rod. When the limit rod slides, it guides the hot gas blowing toward the film so that it can heat the film evenly, thereby reducing the possibility that the edge areas on both sides of the film may not receive enough heat during film transportation, resulting in uneven temperature, thereby increasing the heating area and heating efficiency of the film.

[0019] (4) The present invention provides an automatic temperature-controlled tensioning feeding and transporting device for a film. When the guide frame reciprocates to guide the hot gas blown onto the film, the hot gas can cover a large area of ​​the surface of the film and exert a certain downward pressure on the film during the blowing process. When the film is subjected to the downward pressure of the gas, the contact area with the conveyor belt can be increased, thereby reducing the slippage between the film and the conveyor belt during the process of tension control of the film, and reducing the stagnation of film transportation caused by the slippage between the film and the conveyor belt. This can improve the transportation efficiency of the diaphragm during the tension control process, and at the same time keep the tension of the film stable during transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is the overall appearance diagram of the present invention; Figure 3 For the present invention Figure 2 Schematic diagram after removing the main body; Figure 4 A schematic diagram of the subject of the present invention; Figure 5 is a schematic diagram of the transmission mechanism of the present invention; Figure 6 is a schematic diagram of the tensioning mechanism of the present invention; Figure 7 is a schematic diagram of the rotating mechanism of the present invention; Figure 8 is a schematic diagram of the sliding mechanism of the present invention; Fig. 9 It is a schematic diagram of the shaking mechanism and the moving mechanism of the present invention.

[0021] In the figure: 1. main body; 101. guide roller; 102. hollow cylinder; 103. sliding groove; 104. heating rod; 105. cross plate; 2. transmission mechanism; 201. tooth plate; 202. gear shaft; 203. cam plate; 204. Y-shaped plate; 205. limit frame; 3. tensioning mechanism; 301. swing plate; 302. rectangular groove; 303. hollow frame; 304. sliding plate; 305. rotating plate; 306. sawtooth disk; 307. pushing plate; 4. rotating mechanism; 401. inner frame; 402. Gear shaft 2; 403. T-shaped plate; 404. Outer cylinder; 5. Auxiliary mechanism; 501. C-shaped frame; 502. Hollow block; 503. Elastic triangular plate; 504. Arc plate; 6. Sliding mechanism; 601. Rotating shaft; 602. Gear ring; 603. Semicircular ring; 604. Pushing frame; 7. Rocking mechanism; 701. Fan cylinder; 702. Conical cylinder; 703. Rotating sleeve; 704. Pushing rod; 8. Moving mechanism; 801. L rod; 802. Limiting rod; 803. Guide frame. DETAILED DESCRIPTION

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

[0023] It should be pointed out that the terms "upper", "lower", "left", "right", "top", "bottom", "inside", "outside" and the like indicating directions or positional relationships are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting the present invention.

[0024] It should be understood that, in the description of the invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. Example

[0025] See attached Figures 1 to 9 The present embodiment 1 provides a film automatic temperature control tensioning type feeding and transportation device, which includes a main body 1, a transmission mechanism 2 and a tensioning mechanism 3.

[0026] Three guide rollers 101 are fixedly connected inside the main body 1, a hollow cylinder 102 is fixedly connected inside the main body 1, a sliding groove 103 is provided on the side wall of the main body 1, a heating rod 104 is fixedly connected inside the hollow cylinder 102, two cross plates 105 are fixedly connected inside the hollow cylinder 102, the two cross plates 105 are symmetrically distributed with the heating rod 104 as the center, the bottom outer wall of the hollow cylinder 102 is open, and a conveyor belt is rotatably connected inside the main body 1.

[0027] It should be noted that the film roll to be conveyed is placed on the guide roller 101 at the rear end, and a driving motor is provided on the guide roller 101. The film is conveyed smoothly through the motor drive of the guide roller 101 and the friction force of the conveyor belt.

[0028] The transmission mechanism 2 includes a Y-shaped plate 204 rotatably connected to the side of the main body 1 close to the guide roller 101, the outer surface of the Y-shaped plate 204 is rotatably connected to the tooth plate 201, the side wall of the tooth plate 201 is provided with a semicircular groove, the top outer wall of the semicircular groove is fixedly connected to a plurality of teeth, the side wall of the teeth is meshingly connected to a gear shaft 202, the side of the gear shaft 202 close to the main body 1 is rotatably connected to the side wall of the main body 1, the side of the gear shaft 202 away from the tooth plate 201 is fixedly connected to a cam plate 203, the outer surface of the cam plate 203 is convex, and the side of the Y-shaped plate 204 away from the tooth plate 201 is rotatably connected to a limited position frame 205.

[0029] The tensioning mechanism 3 includes a swinging plate 301 fixedly connected between the two tooth plates 201, a rectangular groove 302 is opened on the top of the swinging plate 301, two guide plates are fixedly connected to the bottom outer wall of the swinging plate 301, a plurality of counterweights are slidably connected to one side of the swinging plate 301 close to the guide plate, two hollow frames 303 are fixedly connected to the top of the swinging plate 301, the two hollow frames 303 are symmetrically distributed with the rectangular groove 302 as the center, and a sliding plate 304 is slidably connected to the inside of the hollow frame 303.

[0030] The side of the sliding plate 304 close to the Y-shaped plate 204 is rotatably connected to the middle plate, and the side of the middle plate away from the sliding plate 304 is rotatably connected to the Y-shaped plate 204. The side wall of the sliding plate 304 is provided with a triangular groove, and the top of the hollow frame 303 is fixedly connected to the limiting strip, and the side of the triangular groove close to the Y-shaped plate 204 is rotatably connected to the rotating plate 305, and the side of the rotating plate 305 close to the rectangular groove 302 is rotatably connected to the right-angle plate, and the side of the right-angle plate close to the rectangular groove 302 penetrates to the outer wall of the hollow frame 303 and extends to the outside, and the extended end of the right-angle plate is fixedly connected to a sawtooth disk 306, and the side of the sawtooth disk 306 away from the rotating plate 305 is provided with a pushing plate 307, and the top of the pushing plate 307 is slidably connected to the bottom of the limiting strip, and the side of the pushing plate 307 close to the main body 1 is fixedly connected to a return spring, and the side of the return spring away from the pushing plate 307 is fixedly connected to the inside of the main body 1, and the top of the swinging plate 301 is fixedly connected to the limiting axis.

[0031] A rotating mechanism 4 is provided inside the rectangular groove 302, and the rotating mechanism 4 includes an inner frame 401 slidably connected to the side of the limit frame 205 away from the Y-shaped plate 204, and three gear shafts 402 are rotatably connected inside the inner frame 401. An obtuse-angled plate is fixedly connected to the side of the gear shaft 402 close to the middle of the inner frame 401, and the side of the gear shaft 402 away from the obtuse-angled plate penetrates the outer wall of the inner frame 401 and extends to the outside. A T-shaped plate 403 is rotatably connected between the three obtuse-angled plates, and a plurality of square grooves are provided on the outer surface of the T-shaped plate 403. The outer surfaces of the plurality of square grooves are slidably connected to exhaust pipes, and the exhaust pipes are away from the T-shaped plate 403. One end penetrates through the outer wall of the rectangular groove 302 and is fixedly connected to the bottom of the hollow frame 303, the exhaust pipe is connected to the interior of the hollow frame 303, the outer surface of the inner frame 401 is slidably connected with an outer cylinder 404, a side of the outer cylinder 404 close to the inner frame 401 is provided with a plurality of rectangular grooves 2, the side walls of the rectangular grooves 2 are fixedly connected with a plurality of auxiliary teeth, the side walls of the auxiliary teeth are meshed with the gear shaft 2 402, an elongated groove is provided on the bottom outer wall of the outer cylinder 404, the bottom of the inner frame 401 is fixedly connected to a limiting plate, the end of the limiting plate away from the inner frame 401 penetrates through the outer wall of the elongated groove and is slidably connected to the inside of the guide plate.

[0032] An auxiliary mechanism 5 is provided on the side of the outer cylinder 404 away from the Y-shaped plate 204, and the auxiliary mechanism 5 includes a plurality of spring rods arranged and connected between the two outer cylinders 404, and a C-shaped frame 501 is slidably connected to the side of the spring rod close to the outer cylinder 404, and the side of the C-shaped frame 501 away from the spring rod is rotatably connected to the side wall of the outer cylinder 404, and a hollow block 502 is fixedly connected to the side of the C-shaped frame 501 close to the T-shaped disk 403, and a plurality of adsorption holes are provided on the top of the hollow block 502, and the side of the adsorption holes away from the T-shaped disk 403 penetrates to the outer wall of the C-shaped frame 501, and a trapezoidal plate is slidably connected to the inside of the hollow block 502, and the side of the trapezoidal plate close to the spring rod penetrates to the outer wall of the hollow block 502 and extends to the outer wall, and an elastic triangular plate 503 is rotatably connected to the extended end of the trapezoidal plate, and the side of the elastic triangular plate 503 away from the trapezoidal plate is fixedly connected to the side wall of the C-shaped frame 501, and a plurality of arc plates 504 are provided on the side wall of the C-shaped frame 501.

[0033] Among them, a plurality of arc plates 504 are fixedly connected between the two T-shaped plates 403 , a flexible layer is fixedly connected between the two arc plates 504 , and a plurality of circular holes are opened on the side walls of the arc plates 504 .

[0034] A sliding mechanism 6 is provided on the side wall of the main body 1, and the sliding mechanism 6 includes a rotating shaft 601 slidably connected to the inside of the sliding groove 103, and a bidirectional thread groove is provided on the outer surface of the rotating shaft 601, and an insertion rod 1 is slidably connected to the inside of the bidirectional thread groove, and a toothed ring 602 is fixedly connected to the end of the insertion rod 1 away from the bidirectional thread groove, and the outer surface of the toothed ring 602 is meshed with the top of the tooth plate 201, and the toothed ring 602 is rotatably connected to the side wall of the main body 1 on the side close to the main body 1.

[0035] The outer surface of the rotating shaft 601 is fixedly connected with an insertion rod 2, and two semicircular rings 603 are arranged on the side of the rotating shaft 601 close to the hollow cylinder 102, and a reset spring 2 is fixedly connected between the two semicircular rings 603. The bottoms of the two semicircular rings 603 are rotatably connected to the bottom inner wall of the hollow cylinder 102, and a pushing frame 604 is arranged at the bottom of the semicircular rings 603. The top of the pushing frame 604 contacts the outer surface of the semicircular rings 603, and the bottom of the pushing frame 604 penetrates to the bottom outer wall of the hollow cylinder 102 and extends to the outside. The extended end of the pushing frame 604 is fixedly connected with a long rod, and the end of the long rod away from the pushing frame 604 contacts the raised part on the cam plate 203.

[0036] A shaking mechanism 7 is arranged inside the hollow tube 102, and the shaking mechanism 7 includes a fan tube 701 rotatably connected to the side wall of the limit frame 205, and the inner wall of the fan tube 701 is provided with two bidirectional thread grooves, and the inner wall of the fan tube 701 is rotatably connected to a conical tube 702, and the conical tube 702 is rotatably connected to a rotating sleeve 703 on one side close to the bidirectional thread groove.

[0037] The internal rotation of the rotating sleeve 703 is connected to a push rod 704, and one end of the push rod 704 away from the middle of the conical tube 702 penetrates the outer wall of the fan tube 701 and contacts the inner wall of the semicircular ring 603. The side of the push rod 704 close to the guide roller 101 is fixedly connected to a tension spring, and the side of the tension spring away from the push rod 704 contacts the inner wall of the fan tube 701. The side of the conical tube 702 close to the heating rod 104 is open.

[0038] A moving mechanism 8 is provided on the side wall of the conical cylinder 702, and the moving mechanism 8 includes an L rod 801 fixedly connected to the opening of the conical cylinder 702, and a limiting rod 802 is fixedly connected to the side of the L rod 801 away from the conical cylinder 702, and the outer surface of the limiting rod 802 is rotatably connected to a guide frame 803, and the guide frame 803 is slidably connected to the bottom inner wall of the hollow cylinder 102.

[0039] It should be noted that, when the film starts to be transported, the film has been preliminarily tensioned by installing a counterweight on the swing plate 301. The swing plate 301 is not in a horizontal state. The swing plate 301 is in a downward tilted state on the counterweight side, and the limit axis is in an upward state relative to the horizontal plane. From the energy point of view, the film itself does not have a power source to actively increase the tension. The film conveying device usually conveys the film at a relatively stable speed and tension. When the swing plate 301 tilts, the energy of the film is mainly consumed in balancing the gravity component of the counterweight, rather than increasing its own tension. The film will adapt to this new force condition by changing its own shape (with a certain degree of tensile deformation under the action of tension), so that the tension is reduced to reach a new equilibrium state. Then, when the film is transported, the tension will not suddenly increase, but will only suddenly decrease; when the tension decreases, the film will relax, the limit axis will move downward, and the position of the configuration block will rise.

[0040] It is not difficult to understand that the swing plate 301 will have a slight shake when the film is conveyed, and drive the gear shaft 202 and the cam plate 203 to shake through the tooth plate 201. When the swing amplitude of the swing plate 301 is small, since there is a gap between the cam plate 203 and the Y-shaped plate 204, the Y-shaped plate 204 will also shake slightly with the rotation of the swing plate 301, but the movement of the following S1 and S2 methods will not occur. When the tension of the film suddenly becomes smaller during the conveying process, the gear shaft 202 drives the cam plate 203 to rotate more, and the Y-shaped plate 204 will move in the following S1 and S2 methods.

[0041] The present invention also provides a method for using a film automatic temperature control tension type feeding and transporting device, which includes the following methods: a method S1 for preventing the film from relaxing due to a sudden decrease in tension and a method S2 for preventing the film from deviating; The method S1 for preventing the film from relaxing due to a sudden decrease in tension of the film comprises the following steps: S11, place the film roll on the topmost guide roller 101, then pass one end of the film through the other guide rollers 101 and the limit shaft in turn and place it on the conveyor belt, then add a counterweight block at the bottom of the swing plate 301 as needed, start the heating rod 104 to control its temperature, and start the conveyor belt inside the main body 1 at the same time. When the conveyor belt is running, it will drive the film forward under the friction of its surface texture or coating. This texture can be many tiny raised particles evenly distributed on the surface of the conveyor belt. These raised particles can be hemispherical particles. When the film contacts the conveyor belt, these point-like protrusions can be embedded in the lower surface of the film to increase the physical contact points, thereby increasing the friction.

[0042] S12, when the tension of the film decreases during transportation, the position of the counterweight block will rise, and the swing plate 301 will rotate clockwise, and the gear shaft 202 and the cam plate 203 will be driven to rotate through the several teeth inside the gear plate 201, which will push the protrusion of the Y-shaped plate 204 and squeeze it. After being squeezed, the Y-shaped plate 204 will rotate counterclockwise, and the sliding plate 304 will be pulled forward inside the hollow frame 303 through the middle plate. At this time, the area formed by the sliding plate 304 and the rear end of the hollow frame 303 becomes larger, and the air pressure decreases, thereby absorbing the gas between the sliding plate 304 and the hollow frame 303. When the gas is absorbed, the gas inside the T-shaped disk 403 is extracted through the exhaust pipe, and the film on its surface is adsorbed through the circular hole on the arc plate 504.

[0043] S13, when the Y-shaped plate 204 rotates counterclockwise, it will pull the inner frame 401 forward through the limit frame 205, and the inner frame 401 will drive the adsorbed film to slide forward through the arc plate 504, thereby increasing the distance between the adsorbed film and the film roll on the topmost guide roller 101, and the film is tightened, increasing the tension of the film during transportation, so that it can be restored to a relatively stable state, reducing the film relaxation caused by the sudden decrease in tension, and improving the quality of the film product.

[0044] The method S2 for preventing the film from deviating comprises the following steps: S21, when the film recovers to a certain stable state under its own tension, the Y-shaped plate 204 rotates clockwise to reset, and pushes the inner frame 401 to slide through the limit frame 205. When sliding, the inner frame 401 will contact the side wall of the push plate 307. At the same time, when the Y-shaped plate 204 rotates, it will push the sliding plate 304 to reset through the middle plate, and the rotating plate 305 drives the right-angle plate connected to it to rotate. When the right-angle plate rotates, it will drive the serrated disk 306 to rotate, and push the push plate 307 through the serrated surface. After the push plate 307 is pushed, the T-shaped disk 403 will move inside the inner frame 401, and drive the outer cylinder 404 to slide through multiple obtuse plates connected to it.

[0045] S22, when the T-shaped plate 403 pushes the obtuse plate, it will also rotate slightly inside the inner frame 401. The sliding of the T-shaped plate 403 will squeeze the multiple arc plates 504. After the arc plates 504 are squeezed, the middle part of the arc plates 504 will push the middle part of the film to form a state of middle bulge. At the same time, when the obtuse plate drives the gear shaft 2 402 to rotate, the rotation of the gear shaft 2 402 will drive the outer cylinder 404 to slide. When the outer cylinder 404 slides, it will push the C-shaped frame 501 to slide relatively. Then, under the state of its own tension during film transportation, it will drive the swing plate 301 to shake. When the swing plate 301 shakes, the outer cylinder 404 will slide slightly according to the above principle. When the outer cylinder 404 slides toward the arc plate 504, the arc plate 504 with a raised middle portion will squeeze the elastic triangular plate 503. After being squeezed, the elastic triangular plate 503 will push the trapezoidal plate to slide inside the hollow block 502. Then, when the outer cylinder 404 drives the C-shaped frame 501 to reset, the raised state of the arc plate 504 will be eliminated, and the trapezoidal plate will slide inside the hollow block 502 and absorb the external film through the absorption holes. Then, when the C-shaped frame 501 is reset, it will pull the bottom of both sides of the film to slide, thereby maintaining the stability and continuity of the film during transportation and reducing the deviation and offset caused by tension changes.

[0046] Furthermore, when the swing plate 301 swings along with the swinging of the film during transportation, the swinging of the swing plate 301 will drive the gear ring 602 to rotate back and forth through the tooth plate 201. When the gear ring 602 rotates, it will drive the rotating shaft 601 to slide inside the sliding groove 103 through the internal plug rod 1 in the bidirectional thread groove on the rotating shaft 601. When the rotating shaft 601 slides, it will slide in the bidirectional thread groove 2 on the inner wall of the fan tube 701 through the surface plug rod 2. When the plug rod 2 slides, it will drive the fan tube 701 to rotate under the back and forth guidance of the plug rod 2 in the bidirectional thread groove 2. When the fan tube 701 rotates, it will blow the hot gas generated by the heating rod 104. When the hot gas is blown, it will blow the film through the opening at the bottom of the hollow tube 102. Then, when the cam plate 203 rotates, the protrusion on the cam plate 203 will push the long rod on the push frame 604 The long rod is squeezed and drives the push frame 604 to move upward. When the push frame 604 moves upward, it squeezes the surface of the semicircular ring 603. When the semicircular ring 603 is squeezed, it will move closer to each other. When the semicircular ring 603 moves closer, it will squeeze the extended end of the push rod 704, and drive the conical tube 702 to rotate on the inner wall of the fan tube 701 through the rotating sleeve 703. Then, when the conical tube 702 rotates, it will drive the L rod 801 to produce a certain degree of deflection. The rotation of the fan tube 701 will drive the guide frame 803 to slide back and forth through the deflected conical tube 702 and the L rod 801. When the limit rod 802 slides, it will guide the hot gas blown toward the film, so that it can heat the film evenly, reducing the possibility that the edge areas on both sides may not get enough heat when the film is transported, resulting in uneven temperature, thereby increasing the heating area and heating efficiency of the film.

[0047] When the guide frame 803 slides back and forth to guide the hot gas blown onto the film, the hot gas can cover a large area of ​​the surface of the film and generate a certain downward pressure on the film during the blowing process. When the film is subjected to the downward pressure of the gas, the contact area with the conveyor belt can be increased, thereby reducing the slippage between the film and the conveyor belt during the process of tension control of the film, and reducing the stagnation of film transportation caused by the slippage between the film and the conveyor belt, thereby improving the transportation efficiency of the diaphragm during the tension control process, and at the same time maintaining the stability of the tension of the film during transportation.

[0048] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A film automatic temperature control tension type feeding and transporting device, comprising a main body (1), characterized in that: It also includes a transmission mechanism (2) and a tensioning mechanism (3); Three guide rollers (101) are fixedly connected to the interior of the main body (1), a hollow cylinder (102) is fixedly connected to the interior of the main body (1), a sliding groove (103) is provided on the side wall of the main body (1), a heating rod (104) is fixedly connected to the interior of the hollow cylinder (102), two cross plates (105) are fixedly connected to the interior of the hollow cylinder (102), the bottom outer wall of the hollow cylinder (102) is open, and a conveyor belt is rotatably connected to the interior of the main body (1); The transmission mechanism (2) comprises a Y-shaped plate (204) rotatably connected to a side of the main body (1) close to the guide roller (101); the outer surface of the Y-shaped plate (204) is rotatably connected to a toothed plate (201); a side wall of the toothed plate (201) is provided with a semicircular groove; a plurality of teeth are fixedly connected to the top outer wall of the semicircular groove; the side wall of the teeth is meshingly connected to a gear shaft (202); a side of the gear shaft (202) away from the toothed plate (201) is fixedly connected to a cam plate (203); the outer surface of the cam plate (203) is convex; and a side of the Y-shaped plate (204) away from the toothed plate (201) is rotatably connected to a limit position frame (205); The tensioning mechanism (3) comprises a swing plate (301) fixedly connected between the two tooth plates (201); a rectangular groove (302) is provided on the top of the swing plate (301); two guide plates are fixedly connected to the bottom outer wall of the swing plate (301); a plurality of counterweights are slidably connected to one side of the swing plate (301) close to the guide plates; two hollow frames (303) are fixedly connected to the top of the swing plate (301); a sliding plate (304) is slidably connected to the interior of the hollow frame (303).

2. The film automatic temperature control tension type feeding and transporting device according to claim 1 is characterized in that: The side of the sliding plate (304) close to the Y-shaped plate (204) is rotatably connected to an intermediate plate, and the side of the intermediate plate away from the sliding plate (304) is rotatably connected to the Y-shaped plate (204). A triangular groove is provided on the side wall of the sliding plate (304). A limit strip is fixedly connected to the top of the hollow frame (303). A rotating plate (305) is rotatably connected to the side of the triangular groove close to the Y-shaped plate (204). A right-angle plate is rotatably connected to the side of the rotating plate (305) close to the rectangular groove (302). The right-angle plate is close to the rectangular groove (302). The outer wall of the hollow frame (303) is penetrated and extends to the outside. The extended end of the right-angle plate is fixedly connected to a sawtooth disk (306). A push plate (307) is provided on the side of the sawtooth disk (306) away from the rotating plate (305). The top of the push plate (307) is slidably connected to the bottom of the limit bar. A return spring is fixedly connected to the side of the push plate (307) close to the main body (1). The side of the return spring away from the push plate (307) is fixedly connected to the inside of the main body (1). The top of the swing plate (301) is fixedly connected to the limit axis.

3. The film automatic temperature control tension type feeding and transporting device according to claim 2 is characterized in that: A rotating mechanism (4) is arranged inside the rectangular groove (302), and the rotating mechanism (4) comprises an inner frame (401) slidably connected to a side of the limit frame (205) away from the Y-shaped plate (204), and three gear shafts (402) are rotatably connected inside the inner frame (401), and a side of the gear shaft (402) close to the middle of the inner frame (401) is fixedly connected to an obtuse-angled plate, and a side of the gear shaft (402) away from the obtuse-angled plate penetrates through the outer wall of the inner frame (401) and extends to the outside, and a T-shaped plate (403) is rotatably connected between the three obtuse-angled plates, and a plurality of square grooves are provided on the outer surface of the T-shaped plate (403), and an exhaust pipe is slidably connected to the outer surface of the plurality of square grooves, and the exhaust pipe is away from the T-shaped plate (401). 03) penetrates through the outer wall of the rectangular groove (302) and is fixedly connected to the bottom of the hollow frame (303); the exhaust pipe is connected to the interior of the hollow frame (303); the outer surface of the inner frame (401) is slidably connected to an outer cylinder (404); a plurality of rectangular grooves 2 are provided inside the outer cylinder (404) on a side close to the inner frame (401); a plurality of auxiliary teeth are fixedly connected to the side walls of the rectangular grooves 2; the side walls of the auxiliary teeth are meshedly connected to the gear shaft 2 (402); an elongated groove is provided on the outer wall of the bottom of the outer cylinder (404); the bottom of the inner frame (401) is fixedly connected to a limiting plate; the end of the limiting plate away from the inner frame (401) penetrates through the outer wall of the elongated groove and is slidably connected to the inside of the guide plate.

4. The film automatic temperature control tension type feeding and transporting device according to claim 3 is characterized in that: An auxiliary mechanism (5) is provided on a side of the outer cylinder (404) away from the Y-shaped plate (204), the auxiliary mechanism (5) comprising a plurality of spring rods arranged and connected between the two outer cylinders (404), a C-shaped frame (501) being slidably connected to a side of the spring rods close to the outer cylinder (404), a side of the C-shaped frame (501) away from the spring rods being rotatably connected to a side wall of the outer cylinder (404), a side of the C-shaped frame (501) close to the T-shaped plate (403) being fixedly connected to a hollow block (502), a top of the hollow block (502) being provided with A plurality of adsorption holes are provided, wherein the side of the adsorption hole away from the T-shaped plate (403) penetrates through the outer wall of the C-shaped frame (501), the interior of the hollow block (502) is slidably connected with a trapezoidal plate, the side of the trapezoidal plate close to the spring rod penetrates through the outer wall of the hollow block (502) and extends to the outer wall, the extended end of the trapezoidal plate is rotatably connected with an elastic triangular plate (503), the side of the elastic triangular plate (503) away from the trapezoidal plate is fixedly connected to the side wall of the C-shaped frame (501), and the side wall of the C-shaped frame (501) is provided with a plurality of arc-shaped plates (504).

5. The film automatic temperature control tension type feeding and transporting device according to claim 1 is characterized in that: The side wall of the main body (1) is provided with a sliding mechanism (6), the sliding mechanism (6) comprising a rotating shaft (601) slidably connected inside the sliding groove (103), the outer surface of the rotating shaft (601) being provided with a bidirectional thread groove, an insertion rod 1 being slidably connected inside the bidirectional thread groove, an end of the insertion rod 1 away from the bidirectional thread groove being fixedly connected with a toothed ring (602), the outer surface of the toothed ring (602) being meshingly connected with the top of the toothed plate (201), and the toothed ring (602) being rotatably connected to the side wall of the main body (1) at a side close to the main body (1).

6. The film automatic temperature control tension type feeding and transporting device according to claim 5 is characterized in that: The outer surface of the rotating shaft (601) is fixedly connected to a second insertion rod, and two semicircular rings (603) are arranged on a side of the rotating shaft (601) close to the hollow cylinder (102), and a second reset spring is fixedly connected between the two semicircular rings (603). The bottoms of the two semicircular rings (603) are rotatably connected to the bottom inner wall of the hollow cylinder (102), and a pushing frame (604) is arranged at the bottom of the semicircular rings (603). The top of the pushing frame (604) contacts the outer surface of the semicircular rings (603), and the bottom of the pushing frame (604) penetrates the bottom outer wall of the hollow cylinder (102) and extends to the outside. The extended end of the pushing frame (604) is fixedly connected to a long rod, and the end of the long rod away from the pushing frame (604) contacts the raised part on the cam plate (203).

7. The film automatic temperature control tension type feeding and transporting device according to claim 2 is characterized in that: A shaking mechanism (7) is arranged inside the hollow cylinder (102), and the shaking mechanism (7) comprises a fan cylinder (701) rotatably connected to the side wall of the limit frame (205), the inner wall of the fan cylinder (701) is provided with two bidirectional thread grooves, the inner wall of the fan cylinder (701) is rotatably connected to a conical cylinder (702), and the conical cylinder (702) is rotatably connected to a rotating sleeve (703) on a side close to the bidirectional thread groove.

8. The film automatic temperature control tension type feeding and transporting device according to claim 7 is characterized in that: The rotating sleeve (703) is internally rotatably connected to a push rod (704); one end of the push rod (704) away from the middle of the conical tube (702) penetrates through the outer wall of the fan tube (701) and contacts the inner wall of the semicircular ring (603); a tension spring is fixedly connected to the side of the push rod (704) close to the guide roller (101); the side of the tension spring away from the push rod (704) contacts the inner wall of the fan tube (701); and the side of the conical tube (702) close to the heating rod (104) is open.

9. The film automatic temperature control tension type feeding and transporting device according to claim 8, characterized in that: A moving mechanism (8) is provided on the side wall of the conical cylinder (702), the moving mechanism (8) comprising an L-rod (801) fixedly connected to the opening of the conical cylinder (702), a limiting rod (802) fixedly connected to the side of the L-rod (801) away from the conical cylinder (702), a guide frame (803) rotatably connected to the outer surface of the limiting rod (802), and the guide frame (803) slidably connected to the bottom inner wall of the hollow cylinder (102).

10. The method for using the film automatic temperature control tension type feeding and transportation device according to any one of claims 1 to 9, characterized in that: The method of use includes the following methods: method S1 for preventing the film from relaxing due to a sudden decrease in tension and method S2 for preventing the film from deviating; The method S1 for preventing the film from relaxing due to a sudden decrease in tension of the film comprises the following steps: S11, placing the film roll on the topmost guide roller (101), then passing one end of the film through the other guide rollers (101) and the limit shaft in sequence and placing it on the conveyor belt, then adding a counterweight block to the bottom of the swing plate (301) as required, starting the heating rod (104) to control its temperature, and simultaneously starting the conveyor belt inside the main body (1), and when the conveyor belt is in operation, the film is transported forward under the friction of its surface texture or coating; S12, when the tension of the film decreases during transportation, the position of the counterweight block rises, and the swing plate (301) rotates clockwise, and the gear shaft (202) and the cam plate (203) are driven to rotate through a plurality of teeth inside the gear plate (201), which pushes the protrusion of the Y-shaped plate (204) and squeezes it. When the Y-shaped plate (204) is squeezed, it rotates counterclockwise and pulls the sliding plate (304) to move forward inside the hollow frame (303) through the middle plate, thereby absorbing the gas between the sliding plate (304) and the hollow frame (303). When the gas is absorbed, the gas inside the T-shaped plate (403) is extracted through the exhaust pipe, and the film on its surface is adsorbed through the circular hole on the arc plate (504); S13, when the Y-shaped plate (204) rotates counterclockwise, it pulls the inner frame (401) forward through the limit frame (205), and the inner frame (401) drives the adsorbed film to slide forward through the arc plate (504), thereby increasing the distance between the adsorbed film and the film roll on the topmost guide roller (101), and the film is tightened, increasing the tension of the film during transportation, so that it returns to a relatively stable state, and reducing the film relaxation phenomenon caused by the sudden decrease in tension; The method S2 for preventing the film from deviating comprises the following steps: S21, when the film recovers to a stable state under its own tension, the Y-shaped plate (204) rotates clockwise to reset, and pushes the inner frame (401) to slide through the limit frame (205). When sliding, the inner frame (401) contacts the side wall of the push plate (307). At the same time, when the Y-shaped plate (204) rotates, it pushes the sliding plate (304) to reset through the middle plate, and drives the right-angle plate connected to it to rotate through the rotating plate (305). When the right-angle plate rotates, it drives the sawtooth disk (306) to rotate, and pushes the push plate (307) through the sawtooth shape on its surface. After the push plate (307) is pushed, the T-shaped disk (403) moves inside the inner frame (401), and drives the outer cylinder (404) to slide through the multiple obtuse plates connected to it; S22, when the T-shaped plate (403) pushes the obtuse plate, it will also rotate slightly inside the inner frame (401). The sliding of the T-shaped plate (403) will squeeze the multiple arc plates (504). After the arc plates (504) are squeezed, the middle part of the arc plates (504) will push the middle part of the film to form a state where the middle part is raised. At the same time, when the obtuse plate drives the gear shaft 2 (402) to rotate, the rotation of the gear shaft 2 (402) will drive the outer cylinder (404) to slide. When the outer cylinder (404) slides, it will push the C-shaped frame (501) to slide relatively. Then, under the state of its own tension during the transportation of the film, it will drive the swing plate (301) to shake. When the swing plate (301) shakes, it will cause the outer cylinder (404) to move slightly. When the outer cylinder (404) slides in the direction of the arc plate (504), the arc plate (504) with a raised middle portion will squeeze the elastic triangular plate (503). After being squeezed, the elastic triangular plate (503) will push the trapezoidal plate to slide inside the hollow block (502). Then, when the outer cylinder (404) drives the C-shaped frame (501) to reset, the raised state of the arc plate (504) will be eliminated. The trapezoidal plate will slide inside the hollow block (502) and absorb the external film through the absorption holes. Then, when the C-shaped frame (501) is reset, it will pull the bottom of both sides of the film to slide, thereby maintaining the stability and continuity of the film during the conveying process and reducing the deviation and offset caused by the tension change.

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