Film tensioning device for film production

Abstract

The invention belongs to the technical field of film tensioning, and particularly relates to a film tensioning device for film production, which comprises a shell, one side of the top wall of the shell is fixedly connected with an air pump, one side wall of the shell is connected with a dynamic tensioning assembly, and the dynamic tensioning assembly is communicated with the air pump through an air pipe. Dynamic tensioning detection assemblies are symmetrically arranged in the shell along the dynamic tensioning assembly; a pressure guiding mode is utilized to change along with tension and looseness of a film, a first detection switch and a second detection switch are matched to judge the tension state of the film and detect excessive tension and looseness of the film, an airflow blowing mode is utilized to push a tension roller to displace, and the tension degree of the film is adjusted. And the high-pressure airflow pushes the films to be conveyed, dust on the surfaces of the films can be removed, and the cleaning efficiency is improved while the cleaning range is enlarged.

Description

Technical Field

[0001] The present invention belongs to the technical field of film tensioning, and specifically refers to a film tensioning device for film production. Background Art

[0002] With the rapid development of industries such as packaging, electronics, and photovoltaics, the application of film materials is becoming more and more extensive. During the production process, the surface quality, thickness uniformity, and mechanical properties of the film have a crucial impact on the performance of its final product. Therefore, ensuring the smooth operation and tension state of the film on the production line is the key to improving product quality.

[0003] In the prior art, the tensioning range of traditional devices is limited, making it difficult to adapt to films of different thicknesses and materials. There is dust on the film surface, which is likely to cause pollution to the film. Moreover, during the tensioning process, the film tension cannot be detected in real time, resulting in wrinkles and affecting the subsequent processing quality.

[0004] Therefore, a film tensioning device for film production is needed to solve the technical problems in the prior art, such as difficulty in adapting to films of different thicknesses and materials, dust pollution to the film, and inability to detect the film tension in real time. Summary of the Invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a film tensioning device for film production. This application uses a pressure-guided method to change along with the tensioning and relaxation of the film, and cooperates with the first detection switch and the second detection switch to judge the film tension state, detect the over-tightening and relaxation of the film, detect the film tension in real time, and solve the technical problem in the prior art that the film tension cannot be detected in real time. According to the detection result, it is determined that by using the blowing method of air flow, the driving screw is rotated forward and backward, thereby adjusting the tension degree of the film, dynamically adjusting the film tension, and being able to adapt to films of different thicknesses and materials, solving the technical problem in the prior art that it is difficult to adapt to films of different thicknesses and materials. The high-pressure air flow promotes the film transportation, and at the same time can clean the dust on the film surface. By using the rotational force generated by the transportation, the cleaning range is expanded and the cleaning efficiency is improved, solving the technical problem in the prior art that dust causes pollution to the film.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows: a film tensioning device for film production proposed in this solution comprises a shell, one side of the top wall of the shell is fixedly connected to an air pump, one side of the inner top wall of the shell is fixedly connected to a filter shell, the output end of the filter shell is connected to the input end of the air pump, the bottom wall of the filter shell is fixedly connected to an exhaust head in a linear array, one side of the inner wall of the shell is rotatably connected to an auxiliary roller, the auxiliary roller is arranged below the exhaust head, one side of the inner wall of the shell is connected to a pneumatic driving component, the pneumatic driving component is connected to the air pump through an air pipe, and one side of the shell A dust cleaning component is connected to the wall, the dust cleaning component is close to the bottom of the auxiliary roller, the dust cleaning component is connected to the pneumatic driving component through an air pipe, the dust cleaning component is transmission-connected to the pneumatic driving component, a side wall of the shell is connected to a dynamic tensioning component, the dynamic tensioning component is connected to the air pump through an air pipe, guide rollers are rotatably connected to the inner walls on both sides of the shell, dynamic tensioning detection components are symmetrically arranged along the dynamic tensioning components in the shell, one end of the dynamic tensioning detection component is fixedly connected to the inner top wall of the shell, and the other end of the dynamic tensioning detection component is fixedly connected to the inner bottom wall of the shell.

[0007] Preferably, a first detection switch is symmetrically fixedly connected to one side of the inner wall of the shell, and the first detection switch is arranged close to one end of one of the dynamic tensioning detection components. A second detection switch is fixedly connected to the other side of the inner wall of the shell, and the second detection switch is arranged close to one end of another dynamic tensioning detection component. The first detection switch and the second detection switch are electrically connected to the air pump.

[0008] Preferably, the dynamic tensioning detection component includes a detection telescopic rod, a detection spring, a guide seat and a detection roller, the detection telescopic rod is fixedly connected to the inner top wall of the shell in a linear array, the top wall of the guide seat is fixedly connected to the telescopic end of the detection telescopic rod, the side wall of the guide seat is slidably connected to the inner side wall of the shell, the circumferential wall of the detection roller is rotatably connected to the guide seat, the detection spring is sleeved on the detection telescopic rod, and both ends of the detection spring are fixedly connected to the top wall of the guide seat and the inner top wall of the shell, the top wall of the guide seat on one of the dynamic tensioning detection components is arranged below the first detection switch, and the bottom wall of the guide seat on the other dynamic tensioning detection component is arranged above the second detection switch.

[0009] Preferably, the dynamic tensioning assembly includes a first pneumatic shell, a partition plate, and a support shell. The side wall of the support shell is fixedly connected to the side wall of the shell. The support shell is hollow and is communicated with the shell. The top wall of the support shell is fixedly connected to the first pneumatic shell. The outer circumferential wall of the partition plate is horizontally fixedly connected to the inner circumferential wall of the first pneumatic shell. The partition plate divides the interior of the first pneumatic shell into a first cavity and a second cavity. The input end of the first cavity is communicated with the output end of the air pump through a trachea. The input end of the second cavity is communicated with the output end of the air pump through a trachea. A first impeller is rotatably connected in the first cavity, and a second impeller is rotatably connected in the second cavity. The first impeller and the second impeller are coaxially fixedly connected.

[0010] Preferably, the dynamic tensioning assembly further includes a driving screw, a driving block, a tensioning roller, and a moving block. The two ends of the driving screw are respectively rotatably connected to the inner top wall and the inner bottom wall of the support shell. One end of the driving screw is coaxially fixedly connected to the second impeller. The driving block is threadedly sleeved on the driving screw. One side wall of the driving block is slidably connected to the inner side wall of the support shell. The moving block is slidably connected to the inner side wall of the shell. One end of the tensioning roller is rotatably connected to the side wall of the driving block, and the other end of the tensioning roller is rotatably connected to the side wall of the moving block. The tensioning roller is rotatably arranged in the shell.

[0011] Preferably, the pneumatic driving assembly includes a second pneumatic shell, a driving impeller, a driving roller, and driving protrusions. The side wall of the second pneumatic shell is fixedly connected to the side wall of the shell. The second pneumatic shell is hollow. The driving impeller is rotatably connected to the inner wall of the second pneumatic shell. The two ends of the driving roller are rotatably connected to the inner side wall of the shell. The driving impeller is coaxially fixedly connected to one end of the driving roller. The driving protrusions are fixedly connected to the outer circumferential wall of the driving roller in an annular linear array. The other end of the driving roller movably penetrates through the other side wall of the shell.

[0012] Preferably, the dust cleaning assembly includes a hollow pipe and dust cleaning heads. The hollow pipes are symmetrically rotatably connected to the inner side wall of the shell. The hollow pipes are arranged below the auxiliary rollers. The input end of the hollow pipe is communicated with the output end of the second pneumatic shell through a trachea. The dust cleaning heads are fixedly communicated with the outer circumferential wall of the hollow pipe in an annular linear array.

[0013] Preferably, the dust cleaning assembly further includes a driven pulley, a driven synchronous belt, and a driving synchronous belt. The driven pulleys are symmetrically rotatably connected to the outer side wall of the shell. The driven pulleys are coaxially fixedly connected to the hollow pipes. The driven synchronous belt is sleeved on the driven pulleys on both sides. The driving synchronous belt is sleeved on one of the driven pulleys and the driving roller that movably penetrates through the other side wall of the shell.

[0014] The beneficial effects achieved by the present invention with the above structure are as follows:

[0015] 1. This application uses a pressure-guided method to change along with the tension and relaxation of the film. In cooperation with the first detection switch and the second detection switch, it judges the tension state of the film, detects the over-tightening and relaxation of the film, and makes a judgment based on the detection results. The air pump conveys high-pressure airflows respectively, and uses the way of airflow blowing to drive the screw to rotate forward and backward, and promotes the tension roller to displace, thereby adjusting the tension degree of the film. It can also adapt to films of different thicknesses and materials. The high-pressure airflow pushes the film to be conveyed, and at the same time can clean the dust on the film surface. It uses the rotational force generated by the conveying to rotate the dust cleaning head, expanding the cleaning range and improving the cleaning efficiency;

[0016] 2. Using the pressure-guided method, the tension roller contacts the film surface. When the guide seat on one of the dynamic tension detection components displaces as the detection spring compresses and touches the first detection switch, it is determined that the film is over-tightened. When the guide seat on the other dynamic tension detection component displaces as the detection spring resets and moves away from the first detection switch, it is determined that the film is loose at this time. When the first detection switch is not touched and the second detection switch is touched, it is determined that the film tension force meets the standard;

[0017] 3. Using the way of airflow pushing, when it is determined that the film is over-tightened, the high-pressure airflow drives the screw to rotate, and then drives the tension roller to move towards the bottom wall of the shell to reduce the tension force of the film. When the film tension force meets the standard, the high-pressure airflow stops driving the screw to rotate. When it is determined that the film is loose, the high-pressure airflow drives the screw to rotate in the reverse direction, and then drives the tension roller to move towards the bottom wall of the shell to increase the tension force of the film. When the film tension force meets the standard, the high-pressure airflow stops driving the screw to rotate, adapting to films of different thicknesses and materials;

[0018] 4. The high-pressure airflow can also drive the driving roller to rotate to convey the film. At the same time, using the synchronous transmission method, it drives the hollow tubes on both sides to rotate the dust cleaning head. The high-pressure airflow can also clean the dust on both sides of the film, expanding the cleaning range and improving the cleaning efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings are used to provide a further understanding of the solution, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention.

[0020] Figure 1 It is a schematic diagram of the overall structure of a film tensioning device for film production proposed by the present invention;

[0021] Figure 2 It is a schematic diagram of the internal structure of a film tensioning device for film production proposed by the present invention;

[0022] Figure 3Schematic diagram of a partial cross-section structure of a dynamic tensioning component of a film tensioning device for film production proposed by the present invention;

[0023] Figure 4 Schematic diagram of the internal structure of another perspective of a dynamic tensioning component of a film tensioning device for film production proposed by the present invention;

[0024] Figure 5 Schematic diagram of the internal structure of the first cavity of a film tensioning device for film production proposed by the present invention;

[0025] Figure 6 Schematic diagram of the internal structure of the second cavity of a film tensioning device for film production proposed by the present invention;

[0026] Figure 7 Schematic diagram of the overall cross-section structure of a pneumatic driving component of a film tensioning device for film production proposed by the present invention;

[0027] Figure 8 It is Figure 2 The enlarged structure diagram of A in

[0028] Figure 9 Schematic diagram of the connection structure of the dust cleaning component of a film tensioning device for film production proposed by the present invention;

[0029] Figure 10 It is Figure 2 The enlarged structure diagram of B in

[0030] In the drawings: 1. Housing, 2. Dynamic tensioning component, 3. Dynamic tensioning detection component, 4. Pneumatic driving component, 5. Dust cleaning component, 7. First detection switch, 8. Second detection switch, 9. Air pump, 10. Auxiliary roller, 11. Guide roller, 12. Filter housing, 13. Air extraction head, 201. First pneumatic housing, 202. Partition plate, 203. First cavity, 204. Second cavity, 205. First impeller, 206. Second impeller, 207. Support housing, 208. Driving screw rod, 209. Driving block, 210. Tensioning roller, 211. Moving block, 301. Detection telescopic rod, 302. Detection spring, 303. Guide seat, 304. Detection roller, 401. Second pneumatic housing, 402. Driving impeller, 403. Driving roller, 404. Driving protrusion, 501. Driven belt pulley, 502. Driven synchronous belt, 503. Driving synchronous belt, 504. Hollow tube, 505. Dust cleaning head.

[0031] The drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. Detailed implementation manners

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0033] Embodiment 1, as Figures 1 - 10 As shown, a film tensioning device for film production proposed in this scheme includes a shell 1, one side of the top wall of the shell 1 is fixedly connected to an air pump 9, one side of the inner top wall of the shell 1 is fixedly connected to a filter shell 12, the output end of the filter shell 12 is connected to the input end of the air pump 9, the bottom wall of the filter shell 12 is fixedly connected to an exhaust head 13 in a linear array, one side of the inner wall of the shell 1 is rotatably connected to an auxiliary roller 10, the auxiliary roller 10 is arranged below the exhaust head 13, one side of the inner wall of the shell 1 is connected to a pneumatic drive component 4, the pneumatic drive component 4 is connected to the air pump 9 through an air pipe, A dust cleaning component 5 is connected to one side wall of the shell 1, and the dust cleaning component 5 is close to the bottom of the auxiliary roller 10. The dust cleaning component 5 is connected to the pneumatic drive component 4 through an air pipe, and the dust cleaning component 5 is connected to the pneumatic drive component 4 through a transmission connection. A dynamic tensioning component 2 is connected to one side wall of the shell 1, and the dynamic tensioning component 2 is connected to the air pump 9 through an air pipe. Four guide rollers 11 are rotatably connected to the inner walls on both sides of the shell 1. There are two guide rollers 11 on both sides of the dynamic tensioning component 2. A dynamic tensioning detection component 3 is symmetrically arranged along the dynamic tensioning component 2 in the shell 1. For details, see Figure 2 One end of the dynamic tensioning detection component 3 on the left is fixedly connected to the inner top wall of the shell 1, and the other end of the dynamic tensioning detection component 3 on the left is arranged between the two guide rollers 11 on one side of the dynamic tensioning component 2. One end of the dynamic tensioning detection component 3 on the right is fixedly connected to the inner bottom wall of the shell 1, and the other end of the dynamic tensioning detection component 3 on the right is arranged between the two guide rollers 11 on the other side of the dynamic tensioning component 2. The dynamic tensioning detection component 3 on the left is in an uncompressed state during the film tensioning process, and the dynamic tensioning detection component 3 on the right is in a compressed state during the film tensioning process.

[0034] like Figures 1 - 2 As shown, a first detection switch 7 is symmetrically fixedly connected to one side of the inner wall of the shell 1, and the first detection switch 7 is arranged close to one end of the dynamic tension detection component 3 on the left side. A second detection switch 8 is fixedly connected to the other side of the inner wall of the shell 1, and the second detection switch 8 is arranged close to one end of the dynamic tension detection component 3 on the right side. The first detection switch 7 and the second detection switch 8 are electrically connected to the air pump 9.

[0035] like Figures 1 - 2As shown, the dynamic tension detection component 3 on the left side includes a detection telescopic rod 301, a detection spring 302, a guide seat 303, and a detection roller 304. The detection telescopic rod 301 is fixedly connected to the inner top wall of the housing 1 in a linear array. The top wall of the guide seat 303 is fixedly connected to the telescopic end of the detection telescopic rod 301. The side wall of the guide seat 303 is slidably connected to the inner side wall of the housing 1. The circumferential wall of the detection roller 304 is rotatably connected to the guide seat 303. The detection spring 302 is sleeved on the detection telescopic rod 301, and both ends of the detection spring 302 are fixedly connected to the top wall of the guide seat 303 and the inner top wall of the housing 1. The top wall of the guide seat 303 on the left side of the dynamic tension detection component 3 is arranged below the first detection switch 7, and the bottom wall of the guide seat 303 on the right side of the dynamic tension detection component 3 is arranged above the second detection switch 8. The dynamic tension detection component 3 on the right side has the same structure as the dynamic tension detection component 3 on the left side, except that the detection telescopic rod 301 of the dynamic tension detection component 3 on the right side is fixedly connected to the inner bottom wall of the housing 1, and the dynamic tension detection component 3 on the right side is opposite to the dynamic tension detection component 3 on the left side in terms of orientation.

[0036] As Figures 1 - 6 shown, the dynamic tension component 2 includes a first pneumatic shell 201, a partition plate 202, and a support shell 207. The side wall of the support shell 207 is fixedly connected to the side wall of the housing 1. The support shell 207 is hollow, and the support shell 207 is communicated with the housing 1. The top wall of the support shell 207 is fixedly connected with a first pneumatic shell 201. The outer circumferential wall of the partition plate 202 is horizontally fixedly connected to the inner circumferential wall of the first pneumatic shell 201. The partition plate 202 divides the interior of the first pneumatic shell 201 into a first cavity 203 and a second cavity 204. The input end of the first cavity 203 is communicated with the output end of the air pump 9 through a trachea, and the input end of the second cavity 204 is communicated with the output end of the air pump 9 through a trachea. A first impeller 205 is rotatably connected in the first cavity 203, and a second impeller 206 is rotatably connected in the second cavity 204. The first impeller 205 and the second impeller 206 are coaxially fixedly connected. For details, see Figures 5 - 6, high-pressure air flow enters into the first cavity 203 and drives the first impeller 205 to rotate, and the high-pressure air flow enters into the second cavity 204 and drives the second impeller 206 to rotate in the reverse direction; the dynamic tensioning assembly 2 further includes a driving screw 208, a driving block 209, a tensioning roller 210 and a moving block 211. The two ends of the driving screw 208 are respectively rotatably connected to the inner top wall and the inner bottom wall of the support shell 207. One end of the driving screw 208 is coaxially and fixedly connected to the second impeller 206. The driving block 209 is threadedly sleeved on the driving screw 208. One side wall of the driving block 209 is slidably connected to the inner side wall of the support shell 207. The moving block 211 is slidably connected to the inner side wall of the housing 1. One end of the tensioning roller 210 is rotatably connected to the side wall of the driving block 209. The other end of the tensioning roller 210 is rotatably connected to the side wall of the moving block 211. The tensioning roller 210 is rotatably arranged in the housing 1.

[0037] As Figure 1 and Figures 7 - 9 shown, the pneumatic driving assembly 4 includes a second pneumatic shell 401, a driving impeller 402, a driving roller 403 and a driving protrusion 404. The side wall of the second pneumatic shell 401 is fixedly connected to the side wall of the housing 1. The second pneumatic shell 401 is hollow. The driving impeller 402 is rotatably connected to the inner wall of the second pneumatic shell 401. The two ends of the driving roller 403 are rotatably connected to the inner side wall of the housing 1. The driving impeller 402 is coaxially and fixedly connected to one end of the driving roller 403. The driving protrusion 404 is fixedly connected to the outer circumferential wall of the driving roller 403 in an annular linear array. The other end of the driving roller 403 movably penetrates through the other side wall of the housing 1.

[0038] As Figure 1 and Figures 9 - 10 shown, the dust cleaning assembly 5 includes a hollow tube 504 and a dust cleaning head 505. The hollow tube 504 is symmetrically and rotatably connected to the inner side wall of the housing 1. The hollow tube 504 is arranged below the auxiliary roller 10. The input end of the hollow tube 504 is communicated with the output end of the second pneumatic shell 401 through an air pipe. The dust cleaning head 505 is fixedly communicated with the outer circumferential wall of the hollow tube 504 in an annular linear array. The dust cleaning assembly 5 further includes a driven pulley 501, a driven synchronous belt 502 and a driving synchronous belt 503. The driven pulley 501 is symmetrically and rotatably connected to the outer side wall of the housing 1. The driven pulley 501 is coaxially and fixedly connected to the hollow tube 504. The driven synchronous belt 502 is sleeved on the driven pulleys 501 on both sides. The driving synchronous belt 503 is sleeved on one of the driven pulleys 501 and the driving roller 403 that movably penetrates through the other side wall of the housing 1.

[0039] Place the device in a suitable position, thread the film into the housing 1. The bottom wall of the film contacts the circumferential wall of the auxiliary roller 10, passes between the two hollow tubes 504 on both sides. The top wall of the film contacts the circumferential walls of the two guide rollers 11 on one side of the dynamic tensioning assembly 2. The detection roller 304 on the dynamic tensioning detection assembly 3 on the left contacts the top wall of the film. The dynamic tensioning detection assembly 3 on the left is in an uncompressed state. The guide seat 303 on the dynamic tensioning detection assembly 3 on the left does not contact the first detection switch 7, and the first detection switch 7 is not triggered. The bottom wall of the film contacts the circumferential wall of the tensioning roller 210. The top wall of the film contacts the circumferential walls of the two guide rollers 11 on the other side of the dynamic tensioning assembly 2. The detection roller 304 of the dynamic tensioning detection assembly 3 on the right contacts the bottom wall of the film. The dynamic tensioning detection assembly 3 on the right is in a compressed state. The guide seat 303 on the dynamic tensioning detection assembly 3 on the right contacts the second detection switch 8, and the second detection switch 8 is in a triggered state. At this time, the air pump 9 does not input high-pressure air flow into the first cavity 203 or the second cavity 204. The bottom wall of the film contacts the driving protrusion 404 on the circumferential wall of the driving roller 403, and the film is threaded out of the housing 1. The air pump 9 inputs high-pressure air flow into the second pneumatic housing 401 and pushes the driving impeller 402 to rotate. The driving impeller 402 pushes the driving roller 403 and the driving protrusion 404 to rotate. The driving protrusion 404 contacts the bottom wall of the film to drive the film for conveying. The driving roller 403 drives the driven pulley 501 on one side to rotate through the driving synchronous belt 503. The two driven pulleys 501 on both sides rotate synchronously through the driven synchronous belt 502. The driven pulley 501 drives the hollow tube 504 to rotate. The high-pressure air flow in the second pneumatic housing 401 is input into the hollow tube 504 through the air pipe and blows towards the film through the dust cleaning head 505 to blow off and clean the dust on the surface of the film. At the same time, the air inlet end of the air pump 9 extracts the air in the filter housing 12. The filter housing 12 extracts the air in the housing 1 through the air extraction head 13 to filter the cleaned dust and prevent the dust from floating and polluting the film again;

[0040] When the film is overly tightened, the dynamic tension detection component 3 on the left side is compressed. The film drives the detection roller 304 to move, the detection roller 304 drives the guide seat 303 to move, the detection telescopic rod 301 and the detection spring 302 are compressed, the guide seat 303 contacts the first detection switch 7, and the air pump 9 inputs high-pressure air flow into the first cavity 203 in the first pneumatic shell 201, pushing the first impeller 205 to rotate. The first impeller 205 drives the second impeller 206 to rotate, pushing the driving screw 208 to rotate in the support shell 207, pushing the driving block 209 to move, and the driving block 209 pushes the tension roller 210 and the moving block 211 to move closer to the inner bottom wall of the housing 1. The tension roller 210 drives the film to slacken. Then the detection telescopic rod 301 and the detection spring 302 reset, pushing the guide seat 303 and the detection roller 304 to move. When the guide seat 303 on the dynamic tension detection component 3 on the left side does not contact the first detection switch 7, and at the same time the guide seat 303 on the dynamic tension detection component 3 on the right side contacts the first detection switch 7, the air pump 9 stops delivering high-pressure air flow into the first cavity 203;

[0041] When the film becomes slack, the dynamic tension detection component 3 on the right side is not compressed. The detection spring 302 and the detection telescopic rod 301 on the dynamic tension detection component 3 on the right side reset, pushing the guide seat 303 and the detection roller 304 to move. The detection roller 304 drives the film to move closer to the inner top wall of the housing 1. The guide seat 303 does not contact the second detection switch 8. The air pump 9 inputs high-pressure air flow into the second cavity 204 in the first pneumatic shell 201, pushing the second impeller 206 to rotate in the reverse direction. The second impeller 206 drives the first impeller 205 to rotate in the reverse direction, pushing the driving screw 208 to rotate in the support shell 207, pushing the driving block 209 to move, and the driving block 209 pushes the tension roller 210 and the moving block 211 to move closer to the inner top wall of the housing 1. The tension roller 210 drives the film to be tightened. Then the detection telescopic rod 301 and the detection spring 302 are compressed, pushing the guide seat 303 and the detection roller 304 to move. When the guide seat 303 on the dynamic tension detection component 3 on the left side does not contact the first detection switch 7, and at the same time the guide seat 303 on the dynamic tension detection component 3 on the right side contacts the second detection switch 87, the air pump 9 stops delivering high-pressure air flow into the first cavity 203.

[0042] The above describes the present invention and its implementation manners. Such description is not restrictive. What is shown in the drawings is only one of the implementation manners of the present invention, and the actual structure is not limited thereto. Generally speaking, if those of ordinary skill in the art are inspired by it and, without departing from the gist of the present invention creation, design similar structural manners and embodiments to this technical solution without creative efforts, they shall fall within the protection scope of the present invention.

Claims

1. A film tensioning device for film production, comprising a shell (1), an air pump (9) is fixedly connected to one side of the top wall of the shell (1), a filter shell (12) is fixedly connected to one side of the inner top wall of the shell (1), an output end of the filter shell (12) is connected to an input end of the air pump (9), a bottom wall of the filter shell (12) is fixedly connected to an exhaust head (13) in a linear array, an auxiliary roller (10) is rotatably connected to one side of the inner wall of the shell (1), and the auxiliary roller (10) is arranged below the exhaust head (13), characterized in that: A pneumatic drive component (4) is connected to one side of the inner wall of the shell (1), and the pneumatic drive component (4) is connected to the air pump (9) through an air pipe. A dust cleaning component (5) is connected to one side wall of the shell (1), and the dust cleaning component (5) is close to the bottom of the auxiliary roller (10). The dust cleaning component (5) is connected to the pneumatic drive component (4) through an air pipe. The dust cleaning component (5) is transmission-connected to the pneumatic drive component (4). A dynamic tensioning component (2) is connected to one side wall of the shell (1), and the dynamic tensioning component (2) is connected to the air pump (9) through an air pipe. Guide rollers (11) are rotatably connected to the inner walls of both sides of the shell (1). Dynamic tensioning detection components (3) are symmetrically arranged inside the shell (1) along the dynamic tensioning component (2), and one end of the dynamic tensioning detection component (3) is fixedly connected to the inner top wall of the shell (1), and the other end of the dynamic tensioning detection component (3) is fixedly connected to the inner bottom wall of the shell (1).

2. A film tensioning device for film production according to claim 1, characterized in that: A first detection switch (7) is symmetrically fixedly connected to one side of the inner wall of the shell (1), and the first detection switch (7) is arranged close to one end of one of the dynamic tension detection components (3). A second detection switch (8) is fixedly connected to the other side of the inner wall of the shell (1), and the second detection switch (8) is arranged close to one end of another dynamic tension detection component (3). The first detection switch (7) and the second detection switch (8) are electrically connected to the air pump (9).

3. A film tensioning device for film production according to claim 1, characterized in that: The dynamic tension detection assembly (3) comprises a detection telescopic rod (301), a detection spring (302), a guide seat (303) and a detection roller (304); the detection telescopic rod (301) is fixedly connected to the inner top wall of the housing (1) in a linear array; the top wall of the guide seat (303) is fixedly connected to the telescopic end of the detection telescopic rod (301); the side wall of the guide seat (303) is slidably connected to the inner side wall of the housing (1); the circumferential wall of the detection roller (304) is rotatably connected to the guide seat (303); the detection spring (302) is sleeved on the detection telescopic rod (301); the two ends of the detection spring (302) are fixedly connected to the top wall of the guide seat (303) and the inner top wall of the housing (1); the top wall of the guide seat (303) on one of the dynamic tension detection assemblies (3) is arranged below the first detection switch (7); and the bottom wall of the guide seat (303) on the other of the dynamic tension detection assemblies (3) is arranged above the second detection switch (8).

4. A film tensioning device for film production according to claim 2, characterized in that: The dynamic tensioning assembly (2) comprises a first pneumatic shell (201), a partition plate (202) and a support shell (207); the side wall of the support shell (207) is fixedly connected to the side wall of the shell (1); the support shell (207) is hollow; the support shell (207) is connected to the shell (1); the top wall of the support shell (207) is fixedly connected to the first pneumatic shell (201); the outer circumferential wall of the partition plate (202) is horizontally fixedly connected to the inner circumferential wall of the first pneumatic shell (201); the partition plate (202) The interior of the first pneumatic shell (201) is divided into a first cavity (203) and a second cavity (204); the input end of the first cavity (203) is connected to the output end of the air pump (9) via an air pipe, and the input end of the second cavity (204) is connected to the output end of the air pump (9) via an air pipe; a first impeller (205) is rotatably connected inside the first cavity (203), and a second impeller (206) is rotatably connected inside the second cavity (204); the first impeller (205) and the second impeller (206) are coaxially fixedly connected.

5. The film tensioning device for film production according to claim 3, characterized in that: The dynamic tensioning assembly (2) further comprises a driving screw (208), a driving block (209), a tensioning roller (210) and a moving block (211); the two ends of the driving screw (208) are respectively rotatably connected to the inner top wall and the inner bottom wall of the support shell (207); one end of the driving screw (208) is coaxially fixedly connected to the second impeller (206); the driving block (209) is threadedly sleeved on the driving screw (208); a side wall of the driving block (209) is slidably connected to the inner side wall of the support shell (207); the moving block (211) is slidably connected to the inner side wall of the shell (1); one end of the tensioning roller (210) is rotatably connected to the side wall of the driving block (209); the other end of the tensioning roller (210) is rotatably connected to the side wall of the moving block (211); and the tensioning roller (210) is rotatably arranged in the shell (1).

6. A film tensioning device for film production according to claim 4, characterized in that: The pneumatic driving component (4) comprises a second pneumatic shell (401), a driving impeller (402), a driving roller (403) and a driving protrusion (404); the side wall of the second pneumatic shell (401) is fixedly connected to the side wall of the shell (1); the second pneumatic shell (401) is hollow; the driving impeller (402) is rotatably connected to the inner wall of the second pneumatic shell (401); both ends of the driving roller (403) are rotatably connected to the inner wall of the shell (1); the driving impeller (402) is coaxially fixedly connected to one end of the driving roller (403); the driving protrusion (404) is fixedly connected to the outer circumferential wall of the driving roller (403) in an annular linear array; and the other end of the driving roller (403) is movably connected to the other side wall of the shell (1).

7. A film tensioning device for film production according to claim 5, characterized in that: The cleaning component (5) comprises a hollow tube (504) and a cleaning head (505); the hollow tube (504) is symmetrically connected to the inner wall of the shell (1); the hollow tube (504) is arranged below the auxiliary roller (10); the input end of the hollow tube (504) is connected to the output end of the second pneumatic shell (401) via an air pipe; the cleaning head (505) is fixedly connected to the outer circumferential wall of the hollow tube (504) in a circular linear array.

8. A film tensioning device for film production according to claim 6, characterized in that: The dust cleaning component (5) also includes a driven pulley (501), a driven synchronous belt (502) and an active synchronous belt (503); the driven pulley (501) is symmetrically rotatably connected to the outer wall of the shell (1); the driven pulley (501) is coaxially fixedly connected to the hollow tube (504); the driven synchronous belt (502) is sleeved on the driven pulleys (501) on both sides; the active synchronous belt (503) is sleeved on the driven pulley (501) on one side and moves through the other side wall of the shell (1) to drive the roller (403).

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