Negative pressure vacuum device for processing wrapping film

Abstract

The utility model relates to the technical field of wrapping film processing, and discloses a negative pressure vacuum device for wrapping film processing, which comprises a workbench, supporting legs are fixedly connected to the lower surface of the workbench, universal wheels are arranged at the bottoms of the supporting legs, a supporting frame is fixedly connected to the upper surface of the workbench, and a top plate is fixedly connected to the upper surface of the supporting frame. The lower surface of the top plate is fixedly connected with an air cylinder, the output end of the air cylinder is fixedly connected with an extraction box, the lower surface of the extraction box is fixedly connected with a connecting pipe, one end of the connecting pipe is fixedly connected with an air draft box, and the inner wall of the air draft box is provided with a flow equalizing assembly. Therefore, the problems that the wind speed is difficult to adjust when the winding films with different specifications are processed and the winding films deform due to the fact that the wind power is not uniform when the device is used for exhausting air are solved, and the effects of finely and uniformly distributing flow, improving the production quality of the winding films and improving the practicability and the production efficiency of the device are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of stretch film processing, in particular to a negative pressure vacuum device used for stretch film processing. Background Art

[0002] Stretch film, also known as stretch film or heat shrink film, was first produced in China using PVC as the base material and DOA as the plasticizer, which also acts as a self-adhesive agent. During the stretch film processing process, a cold roller is used to rapidly cool the film. To ensure that the film adheres well to the cold roller surface, a negative pressure vacuum device is typically installed above the cold roller.

[0003] After the negative pressure vacuum device is working, a negative pressure state is formed in the attachment area between the film and the cold roller. Generally, a first exhaust chamber and a second exhaust chamber are provided. The first exhaust chamber will remove the airflow on the surface of the high-speed rotating cold roller to provide a vacuum environment for the second exhaust chamber, so that the film can be better attached to the cold roller, which is convenient for further processing and production of the stretch film.

[0004] However, the traditional negative pressure vacuum device cannot solve the problem of adjusting the wind speed when processing stretch films of different specifications and types. It is too single to use. At the same time, the uneven wind force during exhaust can easily cause the stretch film to deform, thereby affecting the production quality of the stretch film. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a negative pressure vacuum device for stretch film processing, aiming to improve the problem that the existing technology cannot adjust the wind speed according to different specifications and types of stretch films during processing, is too single to use and has poor practicality, and the uneven wind force during ventilation can easily cause deformation of the stretch film and thus affect the production quality of the stretch film.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a negative pressure vacuum device for processing stretch film, comprising a workbench, the lower surface of the workbench is fixedly connected to a support leg, and a universal wheel is provided at the bottom of the support leg, the upper surface of the workbench is fixedly connected to a support frame, the upper surface of the support frame is fixedly connected to a top plate, the lower surface of the top plate is fixedly connected to a cylinder, the output end of the cylinder is fixedly connected to an extraction box, the lower surface of the extraction box is fixedly connected to a connecting pipe, one end of the connecting pipe is fixedly connected to an exhaust box, the inner wall of the exhaust box is provided with a flow balancing component, the flow balancing component includes a first flow balancing fluid and a second flow balancing fluid, the outer walls of the first and second flow balancing fluids are both provided on the inner wall of the exhaust box, the inner wall of the first flow balancing fluid is fixedly connected to a first flow balancing plate, the inner wall of the first flow balancing plate is fixedly connected to a first fixed column, the inner wall of the second flow balancing fluid is fixedly connected to a second flow balancing plate, and the inner wall of the second flow balancing plate is fixedly connected to a second fixed column.

[0007] Furthermore, the outer wall of the first fluid-distributing device is fixedly connected to the shell, a mounting hole is opened inside the shell, the upper and lower ends of the shell are fixedly connected to the limit sleeve, the outer wall of the limit sleeve is fixedly connected to the connecting block, the outer wall of the support frame is fixedly connected to the electric slide rail, the output end of the electric slide rail is fixedly connected to the slider, and the outer wall of the slider is fixedly connected to the protective shell.

[0008] Furthermore, both sides of the extraction box are fixedly connected with a suction pipe, one end of the suction pipe is fixedly connected with an exhaust fan, and an air outlet is provided inside the exhaust fan.

[0009] Furthermore, the outer wall of the exhaust fan is fixedly connected to the outer wall of the protective shell, the inner wall of the protective shell is provided with a speed regulation component, the speed regulation component includes a motor and an adjusting rod, the outer wall of the adjusting rod is provided inside the protective shell, the outer wall of the motor is fixedly connected to the inner wall of the protective shell, the output end of the motor is fixedly connected to a rotating shaft, and one end of the rotating shaft is rotatably connected to the inner wall of the adjusting rod.

[0010] Furthermore, a transmission shaft is provided on one side of the outer wall of the motor, and the outer wall of the transmission shaft is rotatably connected to a small gear, a middle gear and a large gear in sequence, and one end of the transmission shaft is fixedly connected to the outer wall of the exhaust fan.

[0011] Furthermore, the inner wall of the adjusting rod is rotatably connected to a first transmission gear, the outer wall of the adjusting rod is fixedly connected to a connecting rod, the inner wall of the connecting rod is rotatably connected to a second transmission gear, and the second transmission gear is meshed with the first transmission gear.

[0012] Furthermore, a hand rod is fixedly connected to the inner wall of the adjusting rod, and a spring is provided on the inner wall of the hand rod.

[0013] Furthermore, a clamping block is fixedly connected to the inner wall of the hand lever, a limiting plate is provided on one side of the hand lever, and a circular hole is opened inside the limiting plate.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the utility model, the mutual cooperation of the motor, the adjustment rod, the hand lever, the first transmission gear and the second transmission gear solves the problem of being unable to adjust the wind speed according to the different specifications and types of stretch films during processing and using too single a device, thereby achieving the effect of realizing multiple wind speed adjustments for stretch films of different specifications and types while improving the practicality of the device.

[0016] 2. In the present invention, the first flow balancing fluid, the first fixed column, the first flow balancing plate, the second flow balancing fluid and the second flow balancing plate cooperate with each other, thereby solving the problem that the uneven wind force during the ventilation of the device easily causes deformation of the stretch film and thus affects the production quality of the stretch film, thereby achieving detailed and uniform flow distribution, thereby improving the production quality of the stretch film and thus improving the production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the three-dimensional structure of the negative pressure vacuum device for stretch film processing proposed by the present invention;

[0018] Figure 2 This is a schematic diagram of the exhaust fan structure of the negative pressure vacuum device for stretch film processing proposed by the present invention;

[0019] Figure 3 This is a schematic diagram of the speed regulating component structure of the negative pressure vacuum device for stretch film processing proposed by the present invention;

[0020] Figure 4 This is a schematic diagram of the internal structure of the exhaust box of the negative pressure vacuum device for stretch film processing proposed by the present invention;

[0021] Figure 5 This is a schematic structural diagram of the flow balancing component of the negative pressure vacuum device for stretch film processing proposed by the present invention.

[0022] Legend:

[0023] 1. Workbench; 2. Support frame; 3. Support legs; 4. Universal wheels; 5. Top plate; 6. Cylinder; 7. Speed control assembly; 8. Slider; 9. Electric slide rail; 10. Extraction box; 11. Connecting pipe; 12. Exhaust box; 13. Exhaust fan; 14. Suction pipe; 15. Air outlet; 16. Protective shell; 17. Second fixed column; 18. Motor; 19. Rotating shaft; 20. Adjustment rod; 21. Hand lever; 22. Spring; 23. Block ; 24. First transmission gear; 25. Connecting rod; 26. Second transmission gear; 27. Limiting plate; 28. Round hole; 29. Transmission shaft; 30. Small gear; 31. Medium gear; 32. Large gear; 33. Flow balancing assembly; 34. Limiting sleeve; 35. Connecting block; 36. Housing; 37. First flow balancing fluid; 38. First fixing column; 39. First flow balancing plate; 40. Second flow balancing fluid; 41. Mounting hole; 42. Second flow balancing plate. DETAILED DESCRIPTION

[0024] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0025] Reference Figure 1 、 Figure 4 and Figure 5 , the utility model provides an embodiment: a negative pressure vacuum device for stretch film processing, including a workbench 1, the lower surface of the workbench 1 is fixedly connected to a supporting leg 3, the bottom of the supporting leg 3 is provided with a universal wheel 4, the upper surface of the workbench 1 is fixedly connected to a support frame 2, the upper surface of the support frame 2 is fixedly connected to a top plate 5, the lower surface of the top plate 5 is fixedly connected to a cylinder 6, the output end of the cylinder 6 is fixedly connected to an extraction box 10, the lower surface of the extraction box 10 is fixedly connected to a connecting pipe 11, one end of the connecting pipe 11 is fixedly connected to an exhaust box 12, the inner wall of the exhaust box 12 is provided with a flow balancing component 33, the flow balancing component 33 includes a first fluid balancing component 37 and a second fluid balancing component 40, the outer wall of the first fluid balancing component 37 is provided with an exhaust box 12, and the exhaust box 12 is provided with a flow balancing component 33. The inner wall of the wind box 12, the inner wall of the first flow balancing plate 37 is fixedly connected to the first flow balancing plate 39, the inner wall of the first flow balancing plate 39 is fixedly connected to the first fixed column 38, the inner wall of the second flow balancing plate 40 is fixedly connected to the second flow balancing plate 42, the inner wall of the second flow balancing plate 42 is fixedly connected to the second fixed column 17, the outer walls of the first flow balancing plate 37 and the second flow balancing plate 40 are fixedly connected to the outer shell 36, and a mounting hole 41 is provided inside the outer shell 36. The upper and lower ends of the outer shell 36 are fixedly connected to the limiting sleeve 34, the outer wall of the limiting sleeve 34 is fixedly connected to the connecting block 35, the outer wall of the support frame 2 is fixedly connected to the electric slide rail 9, the output end of the electric slide rail 9 is fixedly connected to the slider 8, and the outer wall of the slider 8 is fixedly connected to the protective shell 16.

[0026] Specifically, the wind entering the component is blocked by setting a first equalizing plate 39, so that the wind can only flow out through the gap between the first equalizing plate 39. After the wind is diverted by the first equalizing plate 39, it reaches the position of the second equalizing plate 42 for more detailed and uniform diversion, and finally flows out through the outlet, completing the uniform diversion, thereby improving the production quality of the stretch film; the top of the exhaust box 12 is connected to the bottom of the extraction box 10 through a connecting pipe 11, and the connecting pipe 11 is provided with multiple groups, and the multiple groups of connecting pipes 11 are distributed in a linear array. The extraction box 10 is driven downward by starting the cylinder 6, and the exhaust fan 13 is started to vacuum the exhaust pipe extraction box 10. Under the action of the connecting pipe 11, the exhaust box 12 generates negative pressure, so that the stretch film can be well attached to the surface of the cold roller, making the operation more convenient.

[0027] Reference Figure 1 、 Figure 2 and Figure 3 , both sides of the extraction box 10 are fixedly connected with a suction pipe 14, one end of the suction pipe 14 is fixedly connected to the exhaust fan 13, an air outlet 15 is opened inside the exhaust fan 13, the outer wall of the exhaust fan 13 is fixedly connected to the outer wall of the protective shell 16, the inner wall of the protective shell 16 is provided with a speed regulating component 7, the speed regulating component 7 includes a motor 18 and an adjusting rod 20, the outer wall of the adjusting rod 20 is provided inside the protective shell 16, the outer wall of the motor 18 is fixedly connected to the inner wall of the protective shell 16, the output end of the motor 18 is fixedly connected to a rotating shaft 19, one end of the rotating shaft 19 is rotatably connected to the inner wall of the adjusting rod 20, and a transmission shaft 29 is provided on one side of the outer wall of the motor 18, and the transmission shaft 2 9 outer wall is rotatably connected with the small gear 30, the middle gear 31 and the large gear 32 in sequence, one end of the transmission shaft 29 is fixedly connected to the outer wall of the exhaust fan 13, the inner wall of the adjusting rod 20 is rotatably connected with the first transmission gear 24, the outer wall of the adjusting rod 20 is fixedly connected with the connecting rod 25, the inner wall of the connecting rod 25 is rotatably connected with the second transmission gear 26, the second transmission gear 26 and the first transmission gear 24 are engaged, the inner wall of the adjusting rod 20 is fixedly connected with the hand lever 21, the inner wall of the hand lever 21 is provided with a spring 22, the inner wall of the hand lever 21 is fixedly connected with a block 23, a limit plate 27 is provided on one side of the hand lever 21, and a circular hole 28 is opened inside the limit plate 27.

[0028] Specifically, by providing the spring 22, the adjustment handle 21 can be adjusted more flexibly in the adjustment rod 20, so that the block 23 on the handle 21 can be better fitted into the circular hole 28 in the limit plate 27, thereby ensuring transmission stability; the position of the handle 21 in the adjustment rod 20 is adjusted so that the block 23 on the handle 21 can be fitted into each circular hole 28 in the limit plate 27, thereby enabling the second transmission gear 26 to engage with one of the small gear 30, the middle gear 31, and the large gear 32 for transmission, thereby realizing multiple wind speed adjustments for wrapping films of different specifications and types, thereby improving the practicality of the device.

[0029] Working principle: When the stretch film needs to be processed, the cold roller with the stretch film is placed under the exhaust box 12, and the cylinder 6 and the electric slide 9 on the top plate 5 are started. At this time, the output end of the cylinder 6 adjusts the position of the extraction box 10 and the exhaust fan 13 according to the size of the cold roller. At the same time, the output end of the electric slide 9 drives the slider 8 and the speed regulating component 7 for auxiliary adjustment. When the exhaust box 12 reaches the appropriate position, the motor 18 in the speed regulating component 7 is started, and its output end drives the rotating shaft 19 to rotate, and the first transmission gear 24 also rotates, thereby driving the second The transmission gear 26 is meshed with it for transmission. The position of the hand lever 21 in the adjustment lever 20 is adjusted according to the different specifications of the stretch film, so that the block 23 on the hand lever 21 can be embedded in each circular hole 28 in the limit plate 27, thereby controlling the second transmission gear 26 to mesh with one of the small gear 30, the middle gear 31, and the large gear 32 for transmission. When one of the small gear 30, the middle gear 31, and the large gear 32 rotates, the transmission shaft 29 also rotates with it, thereby adjusting the suction force of the exhaust fan 13 according to the stretch film of different specifications;

[0030] Secondly, while the exhaust fan 13 is sucking through the connecting pipe 11, the first equalizing fluid 37 and the second equalizing fluid 40 in the flow equalizing component 33 in the exhaust box 12, and the first equalizing plate 39 and the second equalizing plate 42 inside thereof respectively classify the sucked airflow into a uniform diversion to prevent deformation of the wrapping film.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A negative pressure vacuum device for processing stretch film, comprising a workbench (1), characterized in that: The lower surface of the workbench (1) is fixedly connected to a support leg (3), and a universal wheel (4) is provided at the bottom of the support leg (3). The upper surface of the workbench (1) is fixedly connected to a support frame (2), and the upper surface of the support frame (2) is fixedly connected to a top plate (5). The lower surface of the top plate (5) is fixedly connected to a cylinder (6), and the output end of the cylinder (6) is fixedly connected to an extraction box (10). The lower surface of the extraction box (10) is fixedly connected to a connecting pipe (11), and one end of the connecting pipe (11) is fixedly connected to an exhaust box (12). The inner wall of the exhaust box (12) is provided with There is a flow balancing component (33), the flow balancing component (33) includes a first flow balancing fluid (37) and a second flow balancing fluid (40), the outer walls of the first flow balancing fluid (37) and the second flow balancing fluid (40) are both arranged on the inner wall of the exhaust box (12), the inner wall of the first flow balancing fluid (37) is fixedly connected to a first flow balancing plate (39), the inner wall of the first flow balancing plate (39) is fixedly connected to a first fixed column (38), the inner wall of the second flow balancing fluid (40) is fixedly connected to a second flow balancing plate (42), and the inner wall of the second flow balancing plate (42) is fixedly connected to a second fixed column (17).

2. The negative pressure vacuum device for stretch film processing according to claim 1, characterized in that: The outer wall of the first fluid balancing device (37) is fixedly connected to a housing (36), a mounting hole (41) is provided inside the housing (36), the upper and lower ends of the housing (36) are fixedly connected to a limiting sleeve (34), the outer wall of the limiting sleeve (34) is fixedly connected to a connecting block (35), the outer wall of the support frame (2) is fixedly connected to an electric slide rail (9), the output end of the electric slide rail (9) is fixedly connected to a slider (8), and the outer wall of the slider (8) is fixedly connected to a protective shell (16).

3. The negative pressure vacuum device for stretch film processing according to claim 2, characterized in that: Both sides of the extraction box (10) are fixedly connected with a suction pipe (14), one end of the suction pipe (14) is fixedly connected with an exhaust fan (13), and an air outlet (15) is provided inside the exhaust fan (13).

4. The negative pressure vacuum device for stretch film processing according to claim 3, characterized in that: The outer wall of the exhaust fan (13) is fixedly connected to the outer wall of the protective shell (16); the inner wall of the protective shell (16) is provided with a speed regulating assembly (7); the speed regulating assembly (7) comprises a motor (18) and an adjusting rod (20); the outer wall of the adjusting rod (20) is provided inside the protective shell (16); the outer wall of the motor (18) is fixedly connected to the inner wall of the protective shell (16); the output end of the motor (18) is fixedly connected to a rotating shaft (19); one end of the rotating shaft (19) is rotatably connected to the inner wall of the adjusting rod (20).

5. The negative pressure vacuum device for stretch film processing according to claim 4, characterized in that: A transmission shaft (29) is provided on one side of the outer wall of the motor (18), and the outer wall of the transmission shaft (29) is rotatably connected to a small gear (30), a middle gear (31) and a large gear (32) in sequence, and one end of the transmission shaft (29) is fixedly connected to the outer wall of the exhaust fan (13).

6. The negative pressure vacuum device for stretch film processing according to claim 5, characterized in that: The inner wall of the adjusting rod (20) is rotatably connected to a first transmission gear (24), the outer wall of the adjusting rod (20) is fixedly connected to a connecting rod (25), the inner wall of the connecting rod (25) is rotatably connected to a second transmission gear (26), and the second transmission gear (26) is meshed with the first transmission gear (24).

7. The negative pressure vacuum device for stretch film processing according to claim 6, characterized in that: The inner wall of the regulating rod (20) is fixedly connected with a hand rod (21), and the inner wall of the hand rod (21) is provided with a spring (22).

8. The negative pressure vacuum device for stretch film processing according to claim 7, characterized in that: A clamping block (23) is fixedly connected to the inner wall of the hand lever (21), and a limiting plate (27) is provided on one side of the hand lever (21), wherein a circular hole (28) is provided inside the limiting plate (27).

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