Polypropylene film conveying tension control device

Abstract

The utility model discloses a polypropylene film conveying tension control device which comprises a device table body, a device frame body, a tension roller and a tension detection table, the device frame body is fixed at the center position of the top end of the device table body, a control frame is arranged on the inner side of the device frame body, the tension roller is installed in the control frame through a bearing, and the tension detection table is arranged on the tension roller. A rack is fixed to the center of the top end of the device frame body, a lead screw is installed in the rack through a bearing, a first conveying frame is fixed to one side of the top end of the device table body, and a second conveying frame is fixed to the other side of the top end of the device table body. And the tension detection tables are fixed at the top end of the device table body among the device frame body, the first conveying frame and the second conveying frame. The polypropylene film tension detection device is simple in structure, low in overhaul and maintenance cost, small in abrasion and high in precision, adopts a multi-point detection mode, is more accurate in tension detection, and realizes a dust removal function when a polypropylene film is conveyed.

Description

Technical Field

[0001] The utility model relates to the technical field of film processing, in particular to a polypropylene film conveying tension control device. Background Art

[0002] Polypropylene film, referred to as PP film, is a plastic film made of polypropylene resin. It has the properties of light weight, transparency, stretch resistance, tear resistance, etc. The melting point of polypropylene film is relatively high, between 164-170℃, so it has good heat resistance. In addition, it also has good medium resistance, acid and alkali resistance, oil resistance, and moisture and waterproof functions, so it is widely used in packaging, agriculture, construction and medical fields. Polypropylene film needs to be tension controlled during transportation, so the corresponding tension control device is required.

[0003] The Chinese patent with the publication number CN220519719U discloses a polypropylene film conveying tension control device, wherein support columns with an annular structure are fixed on both sides of the top of the frame, and movable cavities are respectively arranged on both sides of the support columns, and the movable cavity is rotatably connected with a threaded rod, and a slider is threadedly connected to the threaded rod, and a tension detector is fixedly arranged between the two sliders, and a bearing seat is fixed on the top of the tension detector, and an adjusting roller is installed between the two bearing seats, and a driving wheel 1 and a driven wheel 1 are respectively connected to the bottom of the two threaded rods, and the driving wheel 1 and the driven wheel 1 are connected through a conveyor belt 1 transmission; bevel gear 1 is respectively fixed to the bottom ends of the two threaded rods located on the same side, and a rotating rod is connected to the frame, and bevel gear 2 is fixed at both ends of the rotating rod, and bevel gear 1 is meshed with bevel gear 2, and bevel gear 3 is fixed to the driving shaft of motor 1, and bevel gear 3 is meshed with bevel gear 1.

[0004] Although the above-mentioned tension control device can adjust the tension during the transportation of polypropylene film, the change of the position of the adjusting roller is driven by two threaded rods, a driving wheel 1, a driven wheel 1, a conveyor belt, a bevel gear 1, a bevel gear 2, a bevel gear 3, etc., and its structure is relatively complicated. After long-term use, it is easy for the two ends of the adjusting roller to move up and down at the same time due to wear. The tension control accuracy is not high, and the inspection and maintenance cost is high. In addition, the device only detects the tension through a tension detector, the detection point is single, and the tension detection is not accurate enough, so it is urgently needed to be improved. Utility Model Content

[0005] The utility model aims to provide a polypropylene film conveying tension control device to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a polypropylene film conveying tension control device, comprising a device platform, a device frame, a tension roller and a tension detection platform, the device frame is fixed at the center position of the top of the device platform, a control frame is arranged on the inner side of the device frame, the tension roller is installed inside the control frame through a bearing, a frame is fixed at the center position of the top of the device frame, a screw rod is installed inside the frame through a bearing, and a movable block is sleeved on the outer wall of the screw rod, the movable block is threadedly connected to the screw rod, push rods are welded on both sides of the bottom end of the movable block, and the bottom end of the push rod passes through the device frame and is welded to the top of the control frame, and a first push rod is installed at the center position of the top of the frame The cam is an assembly made up of two members, each of which is adapted to move the rollers along the guide rails and the guide rails and to move the rollers along the guide rails. The cam is an assembly made up of two members, each of which is adapted to move the rollers along the guide rails and the guide rails and to move the rollers along the guide rails.

[0007] Preferably, a dust removal box is provided on one side of the device frame, and an air outlet duct is installed on the outer wall of the bottom of the dust removal box to facilitate dust collection.

[0008] Preferably, a dust suction pipe is installed on the top of the control frame to facilitate the suction of dust on the tension roller.

[0009] Preferably, a support frame is provided above the tension detection platform, and a pressure detection roller is installed inside the support frame through a bearing to facilitate the transmission of pressure on the film.

[0010] Preferably, springs with equal spacing are fixed to the top of the tension detection platform, and the top of the spring is fixedly connected to the bottom of the support frame to provide elastic supporting force for the support frame.

[0011] Preferably, a hollow plate is fixed inside the dust removal box, and a dust removal filter is arranged on the top of the hollow plate, and a sealing plate is installed on the outer wall of the dust removal box at the position of the dust removal filter by bolts to facilitate filtering of dust.

[0012] Preferably, a dust removal fan is installed on the outer wall of the device frame above the dust removal box, and the input end of the dust removal fan is connected to the dust suction pipe through the second conveying pipe, and the output end of the dust removal fan is connected to the dust removal box through the first conveying pipe, so as to facilitate the suction of dust into the dust removal box.

[0013] Preferably, pressure sensors are installed on the top of the tension detection platforms between the springs to facilitate the detection of the pressure of the membrane.

[0014] Compared with the prior art, the utility model has the following beneficial effects: the polypropylene film conveying tension control device is not only simple in structure, low in maintenance cost, small in wear and tear, high in precision, but also adopts a multi-point detection method, the tension detection is more accurate, and the dust removal function during the polypropylene film conveying is realized;

[0015] (1) The device frame, the control frame, the tension roller, the frame, the screw, the second rotating driving member, the movable block, and the push rod are provided. When the conveying tension of the polypropylene film needs to be controlled, the second rotating driving member drives the screw to rotate. The rotation of the screw causes the movable block to drive the control frame to move downward through the push rod. The control frame drives the tension roller to move downward synchronously. The tension roller presses the polypropylene film downward to control its tension. Since the change of the position of the tension roller is driven only by the second rotating driving member and the screw, the structure is simple, the maintenance cost is low, the wear is small, and the precision is high.

[0016] (2) By setting up a tension detection platform, a support frame, a pressure detection roller, a spring, and a pressure sensor, the polypropylene film transmits the force to the pressure detection roller, the pressure detection roller drives the support frame to press down, the spring is compressed, and the pressure sensor detects the pressure. The tension can be determined according to the pressure. The greater the pressure, the greater the tension. In addition, a multi-point detection method is adopted, so the detection is more accurate.

[0017] (3) By arranging a dust suction pipe, a dust removal fan, a first conveying pipe, a second conveying pipe, a dust removal box, an air outlet pipe, a hollow plate, a dust removal filter element, and a sealing plate, when the polypropylene film is conveyed, the tension roller removes the dust on the surface of the film, the dust removal fan is started to allow the dust suction pipe to absorb the dust on the tension roller, the second conveying pipe and the first conveying pipe convey the dust into the dust removal box, the dust removal filter element on the hollow plate filters the dust, and the air is discharged through the air outlet pipe. In addition, the sealing plate can be removed to replace the dust removal filter element, thereby realizing the dust removal function when the polypropylene film is conveyed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the main cross-sectional structure of the utility model;

[0019] Figure 2 It is a schematic diagram of an enlarged side cross-sectional structure of the device frame of the utility model;

[0020] Figure 3 This is a side view of the enlarged structure of the tension testing platform of the utility model;

[0021] Figure 4 For the utility model Figure 2 The enlarged structural diagram at A in the middle;

[0022] Figure 5 It is a schematic diagram of the enlarged cross-sectional structure of the dust removal box of the utility model.

[0023] In the figure: 1. device body; 2. first conveying frame; 3. first conveying roller; 4. device frame; 5. control frame; 6. tension roller; 7. tension detection platform; 8. second conveying frame; 9. second conveying roller; 10. first rotating drive member; 11. dust removal box; 12. first conveying pipe; 13. dust removal fan; 14. second conveying pipe; 15. frame; 16. screw rod; 17. second rotating drive member; 18. movable block; 19. push rod; 20. support frame; 21. pressure detection roller; 22. spring; 23. pressure sensor; 24. dust suction pipe; 25. air outlet pipe; 26. hollow plate; 27. dust filter element; 28. sealing plate. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. All other embodiments obtained by ordinary technicians in the field without creative work based on the embodiments of the utility model shall fall within the scope of protection of the utility model.

[0025] See also Figure 1-5 , the utility model provides an embodiment: a polypropylene film conveying tension control device, including a device platform 1, a device frame 4, a tension roller 6 and a tension detection platform 7, the device frame 4 is fixed at the center position of the top of the device platform 1, the inner side of the device frame 4 is provided with a control frame 5, the tension roller 6 is installed inside the control frame 5 through a bearing, a frame 15 is fixed at the center position of the top of the device frame 4, and a screw rod 16 is installed inside the frame 15 through a bearing, and a movable block 18 is sleeved on the outer wall of the screw rod 16, the movable block 18 is threadedly connected to the screw rod 16, push rods 19 are welded on both sides of the bottom end of the movable block 18, and the bottom end of the push rod 19 passes through the device frame 4 and is welded to the top of the control frame 5, a second rotary drive member 17 is installed at the center position of the top of the frame 15, and the output end of the second rotary drive member 17 passes through the frame 15 and is fixedly connected to the top of the screw rod 16;

[0026] A first conveying frame 2 is fixed to one side of the top of the device body 1, and a first conveying roller 3 is installed on the top of the first conveying frame 2 through a bearing, a second conveying frame 8 is fixed to the other side of the top of the device body 1, and a second conveying roller 9 is installed on the top of the second conveying frame 8 through a bearing, a first rotating driving member 10 is installed on the outer wall of one side of the first conveying frame 2 and the second conveying frame 8, and the output end of the first rotating driving member 10 passes through the first conveying frame 2 and the second conveying frame 8 and is fixedly connected to one end of the first conveying roller 3 and the second conveying roller 9, and the tension detection platform 7 is fixed to the top of the device body 1 between the device frame 4 and the first conveying frame 2 and the second conveying frame 8;

[0027] A dust removal box 11 is provided on one side of the device frame 4, and an air outlet duct 25 is installed on the outer wall of the bottom of the dust removal box 11 to facilitate dust collection;

[0028] A dust suction pipe 24 is installed on the top of the control frame 5 to facilitate the dust suction on the tension roller 6;

[0029] A support frame 20 is provided above the tension detection table 7, and a pressure detection roller 21 is installed inside the support frame 20 through a bearing to facilitate the transmission of the pressure on the film;

[0030] The top of the tension detection platform 7 is fixed with springs 22 of equal spacing, and the top of the spring 22 is fixedly connected to the bottom of the support frame 20 to provide elastic support force for the support frame 20;

[0031] A hollow plate 26 is fixed inside the dust removal box 11, and a dust filter element 27 is arranged at the top of the hollow plate 26, and a sealing plate 28 is installed on the outer wall of the dust removal box 11 at the position of the dust filter element 27 by bolts, so as to facilitate dust filtering;

[0032] A dust removal fan 13 is installed on the outer wall of the device frame 4 above the dust removal box 11, and the input end of the dust removal fan 13 is connected to the dust suction pipe 24 through the second conveying pipe 14, and the output end of the dust removal fan 13 is connected to the dust removal box 11 through the first conveying pipe 12, so as to facilitate the suction of dust into the dust removal box 11;

[0033] The top of the tension detection platform 7 between the springs 22 is equipped with a pressure sensor 23 to facilitate the detection of the pressure of the membrane.

[0034] When the embodiment of the present application is in use: first, the first rotating driving member 10 drives the first conveying roller 3 and the second conveying roller 9 to rotate respectively, and the first conveying roller 3 and the second conveying roller 9 convey the polypropylene film. When it is necessary to control the conveying tension of the polypropylene film, the second rotating driving member 17 is started to drive the screw rod 16 to rotate. The screw rod 16 rotates so that the movable block 18 drives the control frame 5 to move downward through the push rod 19. The control frame 5 drives the tension roller 6 to move downward synchronously. The tension roller 6 presses the polypropylene film downward to control its tension. Since the change of the position of the tension roller 6 is only driven by the second rotating driving member 17 and the screw rod 16, the structure is simple, the inspection and maintenance cost is low, and the wear is small and the precision is high. At the same time, the polypropylene film transmits the force to the pressure detection roller 21 The pressure detection roller 21 drives the support frame 20 to press down, the spring 22 is compressed, and the pressure sensor 23 detects the pressure. The tension can be judged according to the pressure. Specifically, the greater the pressure, the greater the tension. In addition, the multi-point detection method is adopted, and the detection is more accurate. Moreover, when the polypropylene film is conveyed, the tension roller 6 will pick up the dust on the surface of the film, and the dust removal fan 13 is started so that the dust suction pipe 24 will suck away the dust on the tension roller 6. The second conveying pipe 14 and the first conveying pipe 12 convey the dust into the dust removal box 11. The dust removal filter element 27 on the hollow plate 26 filters the dust, and the air is discharged through the outlet pipe 25. In addition, the sealing plate 28 can be removed to replace the dust removal filter element 27, thereby realizing the dust removal function during the conveying of the polypropylene film.

Claims

1. A polypropylene film conveying tension control device, characterized in that: The invention comprises a device platform (1), a device frame (4), a tension roller (6) and a tension detection platform (7); the device frame (4) is fixed at the center position of the top of the device platform (1); a control frame (5) is arranged on the inner side of the device frame (4); the tension roller (6) is installed inside the control frame (5) through a bearing; a frame (15) is fixed at the center position of the top of the device frame (4); a screw rod (16) is installed inside the frame (15) through a bearing; a movable block (18) is mounted on the outer wall of the screw rod (16); the movable block (18) is threadedly connected to the screw rod (16); push rods (19) are welded on both sides of the bottom end of the movable block (18); the bottom end of the push rod (19) passes through the device frame (4) and is welded to the top of the control frame (5); a second rotating driving member (17) is installed at the center position of the top of the frame (15); and the second rotating The output end of the driving member (17) passes through the frame (15) and is fixedly connected to the top of the screw rod (16); a first conveying frame (2) is fixed to one side of the top of the device body (1), and a first conveying roller (3) is installed on the top of the first conveying frame (2) through a bearing; a second conveying frame (8) is fixed to the other side of the top of the device body (1), and a second conveying roller (9) is installed on the top of the second conveying frame (8) through a bearing; a first rotating driving member (10) is installed on the outer wall of one side of the first conveying frame (2) and the second conveying frame (8), and the output end of the first rotating driving member (10) passes through the first conveying frame (2) and the second conveying frame (8) and is fixedly connected to one end of the first conveying roller (3) and the second conveying roller (9); the tension detection platform (7) is fixed to the top of the device body (1) between the device frame (4) and the first conveying frame (2) and the second conveying frame (8).

2. A polypropylene film conveying tension control device according to claim 1, characterized in that: A dust removal box (11) is provided on one side of the device frame (4), and an air outlet pipe (25) is installed on the outer wall of the bottom of the dust removal box (11).

3. A polypropylene film conveying tension control device according to claim 1, characterized in that: A dust suction pipe (24) is installed on the top of the control frame (5).

4. A polypropylene film conveying tension control device according to claim 1, characterized in that: A support frame (20) is arranged above the tension detection platform (7), and a pressure detection roller (21) is installed inside the support frame (20) via a bearing.

5. A polypropylene film conveying tension control device according to claim 1, characterized in that: The top end of the tension detection platform (7) is fixed with springs (22) with equal spacing, and the top end of the spring (22) is fixedly connected to the bottom end of the support frame (20).

6. A polypropylene film conveying tension control device according to claim 2, characterized in that: A hollow plate (26) is fixed inside the dust removal box (11), and a dust removal filter element (27) is arranged at the top end of the hollow plate (26), and a sealing plate (28) is installed on the outer wall of the dust removal box (11) at the position of the dust removal filter element (27) by means of bolts.

7. A polypropylene film conveying tension control device according to claim 2, characterized in that: A dust removal fan (13) is installed on the outer wall of the device frame (4) above the dust removal box (11), and the input end of the dust removal fan (13) is connected to the dust suction pipe (24) through the second conveying pipe (14), and the output end of the dust removal fan (13) is connected to the dust removal box (11) through the first conveying pipe (12).

8. A polypropylene film conveying tension control device according to claim 5, characterized in that: Pressure sensors (23) are installed on the top of the tension detection platform (7) between the springs (22).

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