Buffer device for plastic film production

Abstract

The utility model discloses a plastic film production buffer device, and relates to the technical field of plastic bag production equipment. Comprising a main frame; the lifting driving assembly is arranged on the main machine frame, the sliding frame is arranged on the main machine frame in a sliding mode in the vertical direction and connected with the lifting driving assembly, and the lifting driving assembly is suitable for driving the sliding frame to move in the vertical direction; the tension monitoring assembly is arranged on the main rack; a plurality of first rotating rollers are arranged at the upper end of the main machine frame at intervals in the first direction, a plurality of second rotating rollers are arranged on the sliding frame at intervals in the first direction, and the first rotating rollers and the second rotating rollers are arranged in a staggered mode. A film material enters the main rack after passing through the tension monitoring assembly and sequentially winds around a first rotating roller of the main rack and a second rotating roller on the sliding frame in a staggered mode. According to the technical scheme provided by the invention, the caching of the film materials with different length requirements can be realized.

Description

Technical Field

[0001] This application relates to the technical field of plastic bag production equipment, and particularly to a buffer device for plastic film production. Background Art

[0002] Plastic bags are made of common plastics such as polypropylene, polyester, and nylon as the main raw materials. They are essential items in people's daily lives. As common packaging materials, they have the characteristics of being light, durable, and waterproof, and the cost is relatively low.

[0003] During its production and processing, after the raw materials are extruded into a film and then cut to finally form a finished product; in this process, sometimes the cutting mechanism needs to be shut down, and the equipment at the raw material extrusion end generally cannot stop quickly. Therefore, the material tape at the front end of the cutting will still convey the film material forward. When the film material is conveyed to the cutting mechanism end, it is in a relatively tense state. If the external force is removed at the cutting end and the front end continues to convey, it may cause the accumulation of the material tape, resulting in poor quality of the subsequent finished products. Utility Model Content

[0004] The purpose of this application is to provide a buffer device for plastic film production to solve at least one of the above technical problems.

[0005] To solve the above technical problems, this application provides a buffer device for plastic film production, including a main frame;

[0006] A sliding frame and a lifting drive assembly, the lifting drive assembly is arranged on the main frame, the sliding frame is slidably arranged on the main frame in the vertical direction and is connected to the lifting drive assembly, and the lifting drive assembly is adapted to drive the sliding frame to move in the vertical direction;

[0007] A tension monitoring assembly, arranged on the main frame;

[0008] A plurality of first rotating rollers are arranged at intervals along a first direction at the upper end of the main frame, and a plurality of second rotating rollers are arranged at intervals along the first direction on the sliding frame, and the first rotating rollers and the second rotating rollers are arranged alternately;

[0009] Wherein, the film material enters the main frame after passing through the tension monitoring assembly, and alternately winds around the first rotating rollers of the main frame and the second rotating rollers on the sliding frame in sequence;

[0010] In the above implementation process, the film material first passes through the tension monitoring component, and then alternately winds around the first rotating roller and the second rotating roller. It can be further understood that if it first passes through the first rotating roller, then winds around the second rotating roller, and then winds around the first rotating roller, and so on; in the initial state, the distance between the sliding frame and the upper end of the main frame is relatively small. When it is necessary to cache the film material, the lifting drive component can drive the sliding frame to move away from the upper end of the main frame in the vertical direction. As the sliding frame moves away, the length of the film material that can be stored between the first rotating roller and the second rotating roller increases, and thus the caching of the film material can be realized; and the tension monitoring component can monitor the caching process to avoid the problem that the tension rises too fast due to the sliding frame moving too fast and damaging the film material; the structure of this solution is simple, and the distance is adjusted through the slidable sliding frame, and thus the caching of film materials with different length requirements can be realized, and the problem of the impact on the product quality caused by the accumulation of film materials when the cutting mechanism stops can be effectively avoided; at the same time, through the further arranged tension monitoring component, the monitoring of the tension is realized, and the problem that the tension rises too fast due to the sliding frame moving too fast and damaging the film material is effectively avoided, and the use safety is improved.

[0011] Preferably, the lifting drive component includes a sliding block, a lead screw and a rotary drive member;

[0012] The rotary drive member is arranged on the main frame, one end of the lead screw is connected to the drive end of the rotary drive member, and the other end is rotatably arranged on the main frame;

[0013] The sliding block is fixedly connected to the sliding frame and is formed with a threaded through hole that is in threaded cooperation with the lead screw;

[0014] Wherein, when the rotary drive member drives the lead screw to rotate, it is adapted to drive the sliding frame to lift through the sliding block;

[0015] In the above implementation process, the rotary drive member can drive the lead screw to rotate, and the lead screw is in threaded cooperation with the sliding block. Therefore, when the lead screw rotates, it can drive the sliding block to move along the axial direction of the lead screw, that is, in the vertical direction. And the sliding block is fixedly connected to the sliding frame, so it can drive the sliding frame to move in the vertical direction, and thus the adjustment of the position of the sliding frame in the vertical direction is realized.

[0016] Preferably, the tension monitoring component includes an auxiliary frame, a third rotating roller and an adjusting roller;

[0017] The auxiliary frame is connected to the main frame. A limiting plate is arranged on the auxiliary frame in the vertical direction, and a limiting groove is arranged on the limiting plate in the vertical direction. Both ends of the adjusting roller are slidably matched with the limiting groove;

[0018] There are two third rotating rollers, which are arranged on the auxiliary frame and are respectively arranged on both sides of the adjusting roller;

[0019] Wherein, the film material first winds around the third rotating roller on the side far away from the main frame, and then winds around the adjusting roller and the other third rotating roller in sequence;

[0020] In the above implementation process, the film material first passes through the first third rotating roller, then passes through the adjusting roller, then passes through the second third rotating roller, and finally enters the main frame; when the moving speed of the sliding frame is too fast and the tension is too large, at this time, the adjusting roller will have an upward trend. When the staff finds that the rising height or rising speed of the adjusting roller is too high, they can control the adjusting speed of the rotary driving part to slow down the moving speed of the sliding frame; it can be understood that since the adjusting roller itself has a certain gravity, it can use this gravity to resist the tension, and the adjusting roller will move only when the tension is too large; among them, the limiting groove on the limiting plate can play a role in limiting the adjusting roller, so that the adjusting roller can only move along the vertical direction to achieve stable adjustment.

[0021] Preferably, a plurality of photoelectric sensors are arranged on the limiting plate along the vertical direction;

[0022] The photoelectric sensor is used to detect the passing of the end of the adjusting roller;

[0023] In the above implementation process, this solution further sets photoelectric sensors on the limiting plate to replace the real-time monitoring of the staff. For example, when the position of the adjusting roller reaches a certain height, it can be sensed by the photoelectric sensor, and then an alarm or other notification means can be realized to remind the staff to make timely adjustments; or cooperate with the control mechanism to realize automatic adjustment, thereby effectively liberating manpower and realizing automatic and accurate control.

[0024] Preferably, bearing members are fixedly connected to both ends of the adjusting roller;

[0025] It further includes a counterweight suitable for being placed on the bearing member;

[0026] In the above implementation process, when encountering film materials of different materials, there may be differences in the tension requirements, or in actual applications, the tension needs to be adjusted to a certain extent. At this time, different masses of counterweights can be placed on the bearing members to achieve adjustment; this solution can further improve the practical compatibility of the device and can be adjusted more flexibly according to actual needs.

[0027] Preferably, a buffer backing plate is arranged on the upper end of the auxiliary frame on the moving path of the end of the adjusting roller;

[0028] In the above implementation process, the present solution further provides a buffer pad on the auxiliary frame. When the tension rises too fast and causes the adjusting roller to move too fast, the buffer pad can be used to prevent rigid impact between the end of the adjusting roller and the auxiliary support. The buffer pad can be used to alleviate the impact, thereby protecting the adjusting roller and the auxiliary support and improving the practical safety.

[0029] Preferably, sliding rollers are provided at the lower end of the main frame;

[0030] In the above implementation process, pulleys are provided at the lower end of the main frame, which can facilitate the staff to adjust the position of the main frame. After adjusting to the appropriate position, it is fixed to improve the practical convenience.

[0031] Compared with the prior art, the beneficial effects of the present application are as follows: The solution provided by the present application has a simple structure. The distance is adjusted through the slidable sliding frame, and then the buffering of the film material with different length requirements is realized, which can effectively avoid the problem of the influence of the film material accumulation on the product quality when the cutting mechanism stops; at the same time, the further provided tension monitoring component realizes the monitoring of the tension, effectively avoiding the problem of the film material being damaged due to the too fast rise of the tension caused by the too fast movement of the sliding frame, and improving the use safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0033] Figure 1 is the overall structural schematic diagram of one embodiment of the present application;

[0034] Figure 2 is the partial structural schematic diagram of one embodiment of the present application;

[0035] Among them: 10, main frame; 11, first rotating roller; 12, second rotating roller; 20, sliding frame; 31, sliding block; 32, lead screw; 33, rotary drive member; 41, auxiliary frame; 42, third rotating roller; 43, limiting plate; 431, limiting groove; 44, adjusting roller; 45, photoelectric sensor; 46, carrier; 47, buffer pad. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0036] The following will disclose multiple embodiments of the present application with diagrams. For the sake of clear illustration, many practical details will be described together in the following narrative. However, it should be understood that these practical details are not used to limit the present application. That is to say, in some embodiments of the present application, these practical details are unnecessary. In addition, for the purpose of simplifying the diagrams, some conventional structures and components will be shown in a simple schematic manner in the diagrams.

[0037] It should be noted that all directional indications such as up, down, left, right, front, back... in the embodiments of the present application are only used to explain the relative positional relationship and movement conditions between components in a specific posture as shown in the attached drawings. If this specific posture changes, then the directional indication will also change accordingly.

[0038] In addition, in the present application, descriptions such as "first", "second", etc. are only for descriptive purposes, and do not particularly refer to the order or sequence, nor are they used to limit the present application. They are merely used to distinguish components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the ability of those of ordinary skill in the art to implement. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present application.

[0039] To further understand the utility model content, features and effects of the present application, the following embodiments are exemplified and described in detail with the accompanying drawings as follows:

[0040] Embodiment

[0041] In the process of plastic bag production and processing, after the raw materials are extruded into a film and then cut, the final product is formed; and in this process, sometimes the cutting mechanism needs to be shut down, and the equipment at the raw material extrusion end generally cannot stop quickly. Therefore, the material tape at the front end of the cutting still conveys the film material forward, and the film material is in a relatively tense state when it is conveyed to the cutting mechanism end. If the external force is removed at the cutting end and the front end continues to convey, it may cause the accumulation of the material tape, resulting in poor quality of the subsequent finished product; to solve the above technical problems, the following technical solutions are provided in this embodiment:

[0042] Specifically, please refer to Figure 1-2 , this embodiment provides a plastic film production buffer device, including a main frame 10, a sliding price, a lifting drive assembly and a tension monitoring assembly;

[0043] Specifically, the lifting drive assembly is arranged on the main frame 10. The sliding frame 20 is slidably arranged on the main frame 10 in the vertical direction and is connected to the lifting drive assembly. The lifting drive assembly is adapted to drive the sliding frame 20 to move in the vertical direction;

[0044] Specifically, the tension monitoring assembly is arranged on the main frame 10;

[0045] Specifically, please refer to Figure 1 , a plurality of first rotating rollers 11 are arranged at intervals along the first direction at the upper end of the main frame 10. A plurality of second rotating rollers 12 are arranged at intervals along the first direction on the sliding frame 20. The first rotating rollers 11 and the second rotating rollers 12 are arranged alternately;

[0046] Wherein, after passing through the tension monitoring assembly, the film material enters the main frame 10 and alternately winds around the first rotating rollers 11 of the main frame 10 and the second rotating rollers 12 on the sliding frame 20 in sequence;

[0047] In the above solution, the film material first passes through the tension monitoring assembly and then alternately winds around the first rotating roller 11 and the second rotating roller 12. Further, it can be understood that if it first passes through the first rotating roller 11, then winds around the second rotating roller 12, and then winds around the first rotating roller 11, and so on; in the initial state, the distance between the sliding frame 20 and the upper end of the main frame 10 is relatively small. When it is necessary to cache the film material, the lifting drive assembly can drive the sliding frame 20 to move away from the upper end of the main frame 10 in the vertical direction. As the sliding frame 20 moves away, the length of the film material that can be stored between the first rotating roller 11 and the second rotating roller 12 increases, and thus the caching of the film material can be realized; and the tension monitoring assembly can monitor the caching process to avoid the problem that the tension rises too fast due to the sliding frame 20 moving too fast and causing damage to the film material; the structure of this solution is simple. By adjusting the distance through the slidable sliding frame 20, the caching of film materials with different length requirements can be realized, and the problem of the impact of film material accumulation on product quality when the cutting mechanism stops can be effectively avoided; at the same time, through the further arranged tension monitoring assembly, the monitoring of the tension is realized, and the problem that the tension rises too fast due to the sliding frame 20 moving too fast and causing damage to the film material is effectively avoided, improving the use safety.

[0048] Specifically, the lifting drive assembly includes a sliding block 31, a lead screw 32 and a rotary drive member 33;

[0049] Further, the rotary drive member 33 is arranged on the main frame 10. One end of the lead screw 32 is connected to the drive end of the rotary drive member 33, and the other end is rotatably arranged on the main frame 10;

[0050] Further, the sliding block 31 is fixedly connected to the sliding frame 20 and is formed with a threaded through hole (not shown in the figure) that is in threaded cooperation with the lead screw 32;

[0051] Wherein, when the rotation driving member 33 drives the lead screw 32 to rotate, it is adapted to drive the sliding frame 20 to lift and lower through the sliding block 31;

[0052] In the above solution, the rotation driving member 33 can drive the lead screw 32 to rotate. The lead screw 32 is in threaded cooperation with the sliding block 31. Therefore, when the lead screw 32 rotates, it can drive the sliding block 31 to move along the axial direction of the lead screw 32, that is, in the vertical direction. And the sliding block 31 is fixedly connected to the sliding frame 20, so it can drive the sliding frame 20 to move in the vertical direction, thereby realizing the adjustment of the position of the sliding frame 20 in the vertical direction.

[0053] Specifically, please refer to Figure 2 , the tension monitoring assembly includes an auxiliary frame 41, a third rotating roller 42 and an adjusting roller 44;

[0054] Further, the auxiliary frame 41 is connected to the main frame 10. A limiting plate 43 is provided on the auxiliary frame 41 in the vertical direction. A limiting groove 431 is provided on the limiting plate 43 in the vertical direction. Both ends of the adjusting roller 44 are in sliding cooperation with the limiting groove 431;

[0055] Further, there are two third rotating rollers 42, which are provided on the auxiliary frame 41 and are respectively arranged on both sides of the adjusting roller 44;

[0056] Wherein, the film material first winds around the third rotating roller 42 on the side far from the main frame 10 and then winds around the adjusting roller 44 and the other third rotating roller 42 in sequence;

[0057] In the above solution, the film material first passes through the first third rotating roller 42, then passes through the adjusting roller 44, then passes through the second third rotating roller 42, and finally enters the main frame 10; when the moving speed of the sliding frame 20 is too fast and the tension is too large, at this time, the adjusting roller 44 will have an upward trend. When the staff finds that the rising height or rising speed of the adjusting roller 44 is too high, they can control the adjusting speed of the rotation driving member 33 to slow down the moving speed of the sliding frame 20; it can be understood that since the adjusting roller 44 itself has a certain gravity, it can use this gravity to counteract the tension, and the adjusting roller 44 will move only when the tension is too large; among them, the limiting groove 431 on the limiting plate 43 can play a limiting role on the adjusting roller 44, so that the adjusting roller 44 can only move in the vertical direction, realizing stable adjustment.

[0058] Specifically, a plurality of photoelectric sensors 45 are provided on the limiting plate 43 in the vertical direction;

[0059] Further, the photoelectric sensors 45 are used to detect the passing of the end of the adjusting roller 44;

[0060] In the above solution, this solution further sets an optoelectronic sensor 45 on the limit plate 43 to replace the real-time monitoring by the staff. For example, when the position of the adjusting roller 44 reaches a certain height, it can be sensed by the optoelectronic sensor 45, and then an alarm or other notification means can be realized to remind the staff to make timely adjustments; or it can cooperate with the control mechanism to realize automatic adjustment, thus effectively liberating manpower and realizing automatic and precise control.

[0061] Specifically, load-bearing members 46 are fixedly connected to both ends of the adjusting roller 44;

[0062] Furthermore, it further includes a counterweight suitable for being placed on the load-bearing member 46;

[0063] In some embodiments, the counterweight can be a weight.

[0064] Specifically, a buffer backing plate 47 is provided at the upper end of the auxiliary frame 41 on the moving path of the end of the adjusting roller 44;

[0065] In the above solution, this solution further sets a buffer backing plate 47 on the auxiliary frame 41. When the situation occurs that the tension rises too fast and causes the adjusting roller 44 to move too fast, at this time, the buffer backing plate 47 can be used to prevent a rigid impact between the end of the adjusting roller 44 and the auxiliary support. The buffer backing plate 47 can be used to relieve the impact and thus protect the adjusting roller 44 and the auxiliary support, improving the practical safety.

[0066] Specifically, sliding rollers are provided at the lower end of the main frame 10;

[0067] In the above solution, pulleys are provided at the lower end of the main frame 10, which can facilitate the staff to adjust the position of the main frame 10. After adjusting to the appropriate position, it is fixed again to improve the practical convenience.

[0068] In the above solution, when encountering film materials of different materials, there may be differences in the tension requirements, or in actual applications, the tension needs to be adjusted to a certain extent. At this time, different masses of counterweights can be placed on the load-bearing member to achieve the adjustment; this solution can further improve the practical compatibility of the device and can be adjusted more flexibly according to actual needs.

[0069] The above description is only for the preferred embodiments of the present application, and does not impose any form of limitation on the present application. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application all belong to the scope of the technical solutions of the present application.

Claims

1. A buffer device for plastic film production, characterized in that: Including a main frame; A sliding frame and a lifting drive assembly, the lifting drive assembly is arranged on the main frame, the sliding frame is slidably arranged on the main frame in the vertical direction and is connected with the lifting drive assembly, and the lifting drive assembly is adapted to drive the sliding frame to move in the vertical direction; A tension monitoring assembly arranged on the main frame; A plurality of first rotating rollers are arranged at intervals in a first direction at the upper end of the main frame, and a plurality of second rotating rollers are arranged at intervals in the first direction on the sliding frame, and the first rotating rollers and the second rotating rollers are arranged alternately; Wherein, the film material enters the main frame after passing through the tension monitoring assembly, and alternately winds around the first rotating rollers of the main frame and the second rotating rollers on the sliding frame in sequence.

2. The plastic film production buffer device according to claim 1, characterized in that: The lifting drive assembly includes a sliding block, a lead screw and a rotary drive member; The rotary drive member is arranged on the main frame, one end of the lead screw is connected with the drive end of the rotary drive member, and the other end is rotatably arranged on the main frame; The sliding block is fixedly connected with the sliding frame and is formed with a threaded through hole that is in threaded cooperation with the lead screw; Wherein, when the rotary drive member drives the lead screw to rotate, it is adapted to drive the sliding frame to lift through the sliding block.

3. The plastic film production buffer device according to claim 2, characterized in that: The tension monitoring assembly includes an auxiliary frame, a third rotating roller and an adjusting roller; The auxiliary frame is connected with the main frame, a limiting plate is arranged vertically on the auxiliary frame, a limiting groove is arranged vertically on the limiting plate, and both ends of the adjusting roller are slidably matched with the limiting groove; There are two third rotating rollers which are arranged on the auxiliary frame and are respectively arranged on both sides of the adjusting roller; Wherein, the film material first winds around the third rotating roller on the side far from the main frame and then winds around the adjusting roller and the other third rotating roller in sequence.

4. The plastic film production buffer device according to claim 3, characterized in that: A plurality of photoelectric sensors are arranged vertically on the limiting plate; The photoelectric sensors are used to detect the passing of the end of the adjusting roller.

5. The plastic film production buffer device according to claim 3, wherein: Load-carrying members are fixedly connected to both ends of the adjusting roller; It further includes a counterweight member adapted to be placed on the load-carrying member.

6. The plastic film production buffer device according to any one of claims 3-5, characterized in that: A buffer backing plate is arranged at the upper end of the auxiliary frame on the moving path of the end of the adjusting roller.

7. The plastic film production buffer device according to claim 6, characterized in that: Sliding rollers are arranged at the lower end of the main frame.

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