Auxiliary traction device for absorbing slitter edges of film

Abstract

The utility model provides an auxiliary traction device for absorbing slitter edges of a thin film, and belongs to the technical field of thin film production equipment. An auxiliary traction device for absorbing slitter edges of a film comprises a rack and a vacuum collecting pipe, and at least two rollers are installed on the rack in parallel; the machine frame is further provided with a slitter edge delivery mechanism, the slitter edge delivery mechanism comprises a driving end and a delivery end, and the delivery end can be driven by the driving end to conduct reciprocating delivery action into the pipe from the pipe opening of the vacuum collecting pipe. According to the auxiliary traction device for sucking the slitter edges of the film, the slitter edges are delivered in the vacuum collecting pipe in a reciprocating mode through the slitter edge delivery mechanism, the stress area of the slitter edges sucked by vacuum in the vacuum collecting pipe is increased, the requirement for the vacuum suction force of the vacuum collecting pipe is reduced, the suction force of a vacuum fan is saved, and energy is saved; and when the vacuum attraction force is reduced or stopped, the waste edge delivery mechanism can still continuously push the waste edges into the vacuum collection pipe through the delivery end for waste edge collection.

Description

Technical Field

[0001] The present application belongs to the technical field of film production equipment, and more specifically, relates to a film waste suction edge auxiliary traction device. Background Art

[0002] Film waste edge removal is an important process in the film production process. It is suitable for removing uneven or incomplete waste edges generated in the film production process, retaining a flat, complete and smooth film. The removed waste edges and debris generated during the cutting process need to be removed in time.

[0003] In the prior art, in order to remove the waste edges cut off during the film production process, the technical solution adopted is to use a special vacuum tube to suck away the waste edges after the waste edges are cut off. For example, the Chinese utility model patent with the publication number CN111300787A provides an online edge trimming, suction, slitting and core pulling device for a plastic extrusion cast film unit, and discloses a technical solution in which the wind nozzle that sucks away the waste edges by negative pressure is directly installed at the position corresponding to the edge cutter, and the waste edges are collected immediately after the waste edges are cut off. The Chinese utility model patent with the publication number CN215592127U provides a tension traction edge suction mechanism, in which a pair of roller wheels consisting of an active roller and a driven roller are added in front of the vacuum tube wind nozzle to cut off the jitter interference caused by the edge suction wind force on the edge material pulling, thereby improving the slitting quality of metal foil and plastic film and reducing the quality problems such as burrs, waves, and small cracks on the slitting edges during the slitting process.

[0004] However, the existing technology has certain shortcomings. Specifically, in the actual production process, the vacuum attraction in the vacuum tube attracts the waste edges in a direction parallel to the direction in which the waste edges move in the vacuum collection tube. This attraction direction is the direction in which the waste edges are subjected to the least force as a whole. In order to attract the waste edges into the vacuum tube, it is necessary to maintain a large vacuum attraction. For the same reason, once the vacuum wind force is insufficient or stops, the waste edge collection will stagnate, and the waste edges generated during the production process will accumulate at the production site and are easily drawn into the equipment, causing equipment damage. Summary of the invention

[0005] The present application provides a film waste edge suction auxiliary traction device, which can realize waste edge collection while solving the problems of small force during waste edge suction, large required vacuum attraction force, insufficient vacuum wind force or inability to continue waste edge collection when it stops.

[0006] In order to solve the above problems, the technical solution adopted in the present application is a film waste suction edge auxiliary traction device, comprising a frame and a vacuum collection pipe, and at least two rollers are installed in parallel on the frame;

[0007] The frame is also provided with a waste edge delivery mechanism, which includes a driving end and a delivery end. The delivery end can perform a reciprocating delivery action from the pipe mouth of the vacuum collection pipe to the pipe under the drive of the driving end.

[0008] Preferably, the roller comprises at least one active roller and at least one driven roller, a slide rail is installed on the frame, the driven roller is installed on the slide rail, and an elastic component is provided at one end of the driven roller away from the active roller.

[0009] Preferably, the delivery end comprises a delivery tongue, which is a semi-cone or a quadrangular pyramid with the tip thereof facing the inside of the vacuum collection tube.

[0010] Preferably, the tongue surface step of the delivery tongue is provided with a push plate, which includes a push-in surface facing the inside of the vacuum collection tube and a slide-out surface facing the outside of the vacuum collection tube, and the angle between the slide-out surface and the tongue surface of the delivery tongue is greater than the angle between the push-in surface and the tongue surface of the delivery tongue.

[0011] Preferably, it also includes a stepless speed regulating motor, and the active roller is driven and controlled by the stepless speed regulating motor.

[0012] Preferably, the end surface of the driven roller connected to the frame is provided with a magnetic component, and the driving end is driven by the magnetic component to move and thus provide power for the delivery end.

[0013] Preferably, it also includes a drive motor that independently drives the drive end.

[0014] Preferably, the delivery end is provided with a pressure sensor and an alarm for detecting the resistance encountered when the delivery end probes into the vacuum collection tube.

[0015] Preferably, the wheel surface of the active roller is made of rubber, and the wheel surface of the driven roller is made of aluminum alloy.

[0016] The beneficial effects of the utility model are:

[0017] 1. The waste edge delivery mechanism reciprocates to deliver the waste edge in the vacuum collection tube, which increases the force area of ​​the waste edge in the vacuum collection tube under vacuum attraction, reduces the demand for vacuum attraction of the vacuum collection tube, saves vacuum fan suction force, and saves energy;

[0018] 2. When the vacuum attraction decreases or stops, the waste edge delivery mechanism can still continue to push the waste edges into the vacuum collection tube through the delivery end for waste edge collection, which will not immediately cause the waste edges to accumulate at the production site, thus keeping the production site clean and tidy, and leaving sufficient time for restarting or overhauling the vacuum equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments or the prior art description:

[0020] Figure 1 It is a front view schematic diagram of the overall structure of this application;

[0021] Figure 2 yes Figure 1 AA section view;

[0022] Figure 3 It is a three-dimensional schematic diagram of the waste edge delivery mechanism of the present application;

[0023] Figure 4 It is a three-dimensional schematic diagram of the delivery tongue of this application;

[0024] Figure 5 It is a schematic diagram of waste edge collection when there is no delivery mechanism;

[0025] Figure 6 yes Figure 5 AA section view;

[0026] Figure 7 It is a schematic diagram of waste edge collection when this application has a delivery organization;

[0027] Figure 8 yes Figure 7 AA section view;

[0028] Description of reference numerals:

[0029] 1. Frame; 2. Vacuum collecting tube; 3. Active roller; 4. Driven roller; 5. Waste edge delivery mechanism; 6. Slide rail; 7. Elastic component; 8. Stepless speed regulating motor; 9. Delivery tongue; 10. Driving shaft; 11. Power rod; 12. Connecting shaft; 13. Fixed rod; 14. Fixed shaft; 15. First movable rod; 16. Second movable rod; 17. Adjusting screw; 18. Fixed ring; 19. Frame side panel; 20. Pressure sensor; 21. Alarm; 22. Push plate; 23. Push-in surface; 24. Slide-out surface; 25. Film waste edge. DETAILED DESCRIPTION

[0030] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0031] It should be noted that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0032] like Figure 1-3 As shown, a film waste edge suction auxiliary traction device includes a frame 1 and a vacuum collection tube 2, a driving roller 3 and a driven roller 4 are installed in parallel on the frame 1, and a waste edge delivery mechanism 5 is symmetrically installed on both sides of the frame 1. The waste edge delivery mechanism 5 includes a driving end and a delivery end. In this embodiment, the driving end includes a driving shaft 10 installed on the side plate 19 of the frame, and the driving shaft 10 is movably connected to the power rod 11. The delivery end includes a connecting shaft 12, a second movable rod 16 and a delivery tongue 9. The connecting shaft 12 is connected between the second movable rod 16 and the power rod 11, and the movement of the power rod 11 is transmitted to the second movable rod 16, and the second movable rod 16 is movably connected to the delivery tongue 9. The delivery end also includes a first movable rod 15 movably connected to the connecting shaft 12, the first movable rod 15 is connected to a fixed rod 13, and the delivery end is fixed to a fixed shaft 14 arranged on the vacuum collection tube 2 through the fixed rod 13, and a slide groove is provided in the fixed rod 13, and the fixed shaft 14 can move freely in the slide groove of the fixed rod 13.

[0033] When in use, the driving shaft 10 makes a circular motion at the frame side plate 19, and transmits the motion to the connecting shaft 12 through the power rod 11. The connecting shaft 12 simultaneously drives the first movable rod 15 and the second movable rod 16 to move. The second movable rod 16 drives the delivery tongue 9 to perform a reciprocating delivery action at the pipe mouth of the vacuum collection tube 2 into the tube. The first movable rod 15 fixes the delivery end on the vacuum collection tube 2 through the fixing rod 13 to prevent the delivery tongue 9 from escaping from the vacuum collection tube 2 during the reciprocating delivery action.

[0034] like Figure 5 and Figure 6 As shown, when the vacuum collection tube 2 without the waste edge delivery mechanism 5 is working, the vacuum suction direction is parallel to the movement direction of the film waste edge 25, and the force-bearing surface of the film waste edge 25 is small. Therefore, in order to stably collect the film waste plate 25, a strong vacuum suction force is required in the vacuum collection tube 2, which increases the energy consumption of the vacuum fan. Figure 7 and Figure 8 As shown, the delivery tongue 9 changes the motion state of the film scrap 25 in the vacuum collection tube 2. In the action of the scrap delivery mechanism 5 reciprocatingly delivering the film scrap 25, the force-bearing surface of the film scrap 25 affected by the vacuum suction force is changed, and the film scrap 25 no longer enters the vacuum collection tube 2 in a straight line but in a wave-like manner. Since the force-bearing area of ​​the film scrap 25 is increased, the vacuum suction force required to collect the film scrap 25 is significantly reduced. At the same time, even if the vacuum suction force in the vacuum collection tube 2 stops, the scrap delivery mechanism 5 can also deliver the film scrap 25 to the vacuum collection tube 2, preventing the film scrap 25 from immediately accumulating outside the vacuum collection tube 2, reducing the risk of the film scrap 25 being rolled into the roller, and leaving sufficient time for equipment maintenance or restart.

[0035] Furthermore, if Figure 1 and Figure 2 As shown, the rollers include at least one active roller 3 and at least one driven roller 4, a slide rail 6 is installed on the frame 1, and the driven roller 4 is installed on the slide rail 6 through a fixing ring 18, and an elastic component 7 is provided at one end of the driven roller 4 away from the active roller 3. In this embodiment, the elastic component 7 is a spring fixed on the frame side plate 19 and an adjustment screw 17 below the spring. The spring is compressed by adjusting the position of the adjustment screw 17, so that the spring applies pressure to the driven roller 4 to make it move upward through the slide rail 6 until the driven roller 4 and the active roller 3 clamp the film waste edge 25, so that the film waste edge 25 moves toward the vacuum collection tube 2 as the active roller 3 rotates, and the delivery process of the film waste edge 25 is realized. The active roller 3 moves under the drive of the motor, provides the film waste edge 25 with power to move toward the vacuum collection tube 2, plays a role of support and clamping, and can rotate under the drive of the film waste edge 25 to reduce its movement resistance to the film waste edge 25. The distance between the active roller 3 and the driven roller 4 is controlled by adjusting the adjusting screw 17 according to the size of the produced film product, so as to flexibly adapt to the collection of film waste edges 25 of various specifications.

[0036] Further, Figure 3 , Figure 4 and Figure 8 As shown, the delivery end includes a delivery tongue 9, which is a semi-cone or a quadrangular pyramid with the tip facing the inside of the vacuum collection tube 2, so that when the vacuum suction force of the vacuum collection tube 2 stops working, the withdrawal action performed by the delivery tongue 9 of the waste edge delivery mechanism 5 will not bring out the film waste edge 25 that has been delivered into the vacuum collection tube 2 again.

[0037] Furthermore, if Figure 4 and Figure 8As shown, the tongue surface step of the delivery tongue 9 is provided with a push plate 22, and the push plate 22 includes a push-in surface 23 facing the inside of the vacuum collection tube 2 and a slide-out surface 24 facing the outside of the vacuum collection tube 2. The included angle between the slide-out surface 24 and the tongue surface of the delivery tongue 9 is greater than 90° and greater than the included angle between the push-in surface 23 and the tongue surface of the delivery tongue 9. When the vacuum suction force of the vacuum collection tube 2 stops working, the film waste edge 25 no longer remains suspended in the vacuum collection tube 2, but is attached to the vacuum collection tube 2 and the delivery tongue 9. The provision of the push plate 22 can increase the thrust of the delivery tongue 9 in delivering the film waste edge 25, and improve the delivery efficiency of the film waste edge 25. The push-in surface 23 facing the inside of the vacuum collection tube 2 contacts the film waste edge 25 during the process of the delivery tongue 9 delivering the film waste edge 25 to the inside of the vacuum collection tube 2, thereby increasing the thrust. The sliding surface 24 facing the outside of the vacuum collecting tube 2 contacts the film waste edge 25 during the process of the delivery tongue 9 exiting the vacuum collecting tube 2, which drives the film waste edge 25 to move outward. Therefore, the angle between the sliding surface 24 and the tongue surface of the delivery tongue 9 is greater than the angle between the pushing surface 23 and the tongue surface of the delivery tongue 9. The gain of the pushing surface 23 pushing the film waste edge 25 in can be greater than the negative impact of the sliding surface 24 taking out the film waste edge 25.

[0038] Furthermore, if Figure 1 and Figure 2 As shown, the machine also includes a stepless speed regulating motor 8, and the active roller 3 is driven and controlled by the stepless speed regulating motor 8. In this embodiment, the stepless speed regulating motor 8 is arranged on the side of the frame 1, and the movement speed of the film scrap 25 needs to match the film movement speed of the film production line to ensure the smooth delivery of the film scrap 25.

[0039] Furthermore, if Figure 1 and Figure 2 As shown, the end surface where the driven roller 4 is connected to the frame 1 is provided with a magnetic component, and the magnetic component drives the driving end to move and thus provides power for the delivery end. When the vacuum suction of the vacuum collection tube 3 works stably and there is no need to consider the situation where the vacuum suction stops working, the waste edge delivery mechanism is only used to change the movement state of the film waste edge 25, and its delivery speed does not need to match the linear speed of the wheel surface rotation of the active roller 3. The operation of the driven roller 4 drives the waste edge delivery mechanism 5 to move, which can effectively reduce the energy consumption of the equipment.

[0040] Furthermore, if Figure 3 and Figure 8As shown, it also includes a driving motor that independently drives the driving end. In this embodiment, the driving motor is arranged in the frame side plate 19 to control and drive the driving shaft 10 to move. By independently driving the driving end with the driving motor, the movement speed of the delivery tongue 9 can be independently adjusted, so that its delivery speed is greater than or equal to the linear speed of the wheel surface rotation of the active roller 3. When the vacuum suction force in the vacuum collection tube 2 is reduced or stopped, the waste edge delivery device 5 can meet the collection demand of the film waste edge 25 within a period of time when the vacuum suction force in the vacuum collection tube 2 stops, so that the film waste edge 25 will not be accumulated outside the vacuum collection tube 2.

[0041] Furthermore, if Figure 4 and Figure 8 As shown, the delivery end is provided with a pressure sensor 20 and an alarm 21. In this embodiment, the pressure sensor 20 and the alarm 21 are directly arranged at the end of the delivery tongue 9. This position contacts the film waste 25 earliest in each delivery action of the waste delivery mechanism 5, and extends the farthest into the vacuum collection tube 2, so that the collection of the film waste 25 can be detected at the first time. The ability of the waste delivery mechanism 5 to collect the film waste 25 is limited. If the vacuum collection tube 2 is relatively narrow or the vacuum wind flow in the vacuum collection tube 2 is cut off for too long, the film waste 25 will accumulate in the vacuum collection tube 2. At this time, the waste delivery device 5 will be affected by the resistance of the accumulated film waste 25 during its operation. By detecting the force condition of the delivery end of the waste delivery device 5, an alarm can be issued in time to remind the staff to repair or restart the vacuum fan to provide vacuum suction for the vacuum collection tube 2.

[0042] Furthermore, if Figure 2 As shown, the wheel surface of the active roller 3 is made of rubber material, and the wheel surface of the driven roller 4 is made of aluminum alloy material. In this embodiment, the wheel surface of the active roller 3 is made of rubber material with greater friction, and the film waste edge 25 is driven to move toward the vacuum collection tube by the active roller 3. The driven roller 4 is made of aluminum alloy material with less friction and smooth surface to prepare the wheel surface, which mainly plays the role of supporting and applying pressure to the active roller 3 to clamp the film waste edge 25. The smooth wheel surface can make the film waste edge 25 slide out smoothly from above it and reduce the energy consumption of the motor driving the active roller 3.

[0043] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A film waste suction auxiliary traction device, comprising a frame and a vacuum collection pipe, wherein at least two rollers are installed in parallel on the frame, characterized in that: The frame is also provided with a waste edge delivery mechanism, which includes a driving end and a delivery end. The delivery end can perform a reciprocating delivery action from the pipe mouth of the vacuum collection pipe into the pipe under the drive of the driving end.

2. The film waste suction auxiliary traction device according to claim 1, characterized in that: The rollers include at least one active roller and at least one driven roller. A slide rail is installed on the frame, and the driven roller is installed on the slide rail. An elastic component is arranged at one end of the driven roller away from the active roller.

3. The film waste suction auxiliary traction device according to claim 1, characterized in that: The delivery end comprises a delivery tongue, which is a semi-cone or a quadrangular pyramid with the tip thereof facing the inside of the vacuum collection tube.

4. The film waste suction auxiliary traction device according to claim 3, characterized in that: The tongue surface step of the delivery tongue is provided with a push plate, and the push plate includes a push-in surface facing the inside of the vacuum collection tube and a slide-out surface facing the outside of the vacuum collection tube, and the angle between the slide-out surface and the tongue surface of the delivery tongue is greater than 90° and greater than the angle between the push-in surface and the tongue surface of the delivery tongue.

5. The film waste suction auxiliary traction device according to claim 2, characterized in that: It also includes a stepless speed regulating motor, and the active roller is driven and controlled by the stepless speed regulating motor.

6. The film waste suction auxiliary traction device according to claim 2, characterized in that: The end surface of the driven roller connected to the frame is provided with a magnetic component, and the driving end is driven by the magnetic component to move, thereby providing power for the delivery end.

7. The film waste suction auxiliary traction device according to claim 1, characterized in that: Also included is a driving motor that independently drives the driving end.

8. The film waste suction auxiliary traction device according to any one of claims 1 to 7, characterized in that: The delivery end is provided with a pressure sensor and an alarm for detecting the resistance encountered when the delivery end probes into the vacuum collection tube.

9. The film waste suction edge auxiliary traction device according to claim 2, characterized in that: The wheel surface of the active roller is made of rubber, and the wheel surface of the driven roller is made of aluminum alloy.

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