Feeding device of plastic film bag making machine
By designing smoothing, tensioning, dust extraction, and lighting components on the plastic film bag making machine, the problem of unevenness during the plastic film bag making process has been solved, achieving higher quality and more efficient plastic bag production.
Patent Information
- Application Number
- CN202520197886.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-08
- Publication Date
- 2025-12-26
- Estimated Expiration
- 2035-02-08
AI Technical Summary
In the existing plastic film bag making machine, uneven plastic film surfaces during the bag making process cause wrinkles, ripples, or unevenness in the plastic bags, reducing their load-bearing capacity and service life.
A feeding device for a plastic film bag making machine was designed, comprising a smoothing component, a tensioning component, a dust suction component, a lighting component, and an observation window. The smoothing plate eliminates film wrinkles and unevenness, adjusts tension, removes dust and static electricity, improves visibility, and enables timely detection of production problems.
It improves the flatness of plastic film and the neatness of cut edges, reduces waste and downtime, and enhances the quality and production efficiency of plastic bags.
Smart Images
Figure CN223722364U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to bag making machine technical field, and specifically, it mainly relates to a kind of feeding device of plastic film bag making machine. BACKGROUND
[0002] Plastic film is a kind of high molecular synthetic material as main raw material, and after being mixed with other auxiliary raw materials according to certain proportion, it is formed into certain thickness, width and infinite length, surface smooth, smooth and soft plastic product on plastic forming mechanical equipment.Plastic film bag making machine is a kind of packaging equipment with higher degree of automation, mainly used for processing plastic film into various types of plastic bags.
[0003] In the prior art, the staff first places the plastic film on the unwinding device, and the equipment starts to automatically wind the plastic film, which will enter the horizontal sealing machine and vertical sealing machine area in turn, and the horizontal sealing machine and vertical sealing machine will heat the plastic film and make it into bag shape, then the bag-shaped plastic film enters the cutting area, and the cutting device will cut it according to the preset length, and then plastic bags with consistent size can be produced.
[0004] In long-term use and observation, it is found that during the process of using bag making machine to make plastic film into plastic bag, the uneven surface of plastic film will cause the plastic bag to have wrinkled, corrugated or uneven area, thereby reducing the carrying capacity and service life of plastic bag.
[0005] Therefore, the utility model provides a kind of feeding device of plastic film bag making machine. UTILITY MODEL CONTENT
[0006] In view of the deficiencies of the prior art, the utility model provides a kind of feeding device of plastic film bag making machine.
[0007] This utility model discloses a feeding device for a plastic film bag making machine, comprising a bag making box. A motor is fixedly connected to the middle of the side wall of the bag making box, and an unwinding roller is fixedly connected to the output end of the motor. The unwinding roller rotates inside the bag making box. A leveling assembly is provided in the middle of the inner side wall of the bag making box, and a dust suction assembly is provided on the bottom side wall of the leveling assembly. A first top plate is fixed in the middle of the inner side wall of the bag making box, and a first electric push rod is fixedly connected to the top side wall of the first top plate. A horizontal sealing machine is assembled at the output end of the first electric push rod. The leveling assembly is located between the unwinding roller and the horizontal sealing machine. A second top plate is fixed in the middle of the inner side wall of the bag making box, and a second electric push rod is fixedly connected to the top side wall of the second top plate. A vertical sealing machine is assembled at the output end of the second electric push rod. A third top plate is fixed in the middle of the inner side wall of the bag making box, and a third electric push rod is fixedly connected to the top side wall of the third top plate. A cutting blade is assembled at the output end of the third electric push rod. The smoothing assembly, horizontal sealing machine, vertical sealing machine, and cutting blade are all equipped with tensioning components. A lighting assembly is provided on the top side wall of the bag-making box. The smoothing assembly includes a fixing rod fixed to the inner wall of the bag-making box. A fixing box is mounted in the middle of the side wall of the fixing rod, and a smoothing plate is fixed in the middle of the side wall of the fixing box. The smoothing plates are a pair and symmetrically arranged on both sides of the fixing box. By setting the fixing rod, fixing box, and smoothing plates, the plastic film can be smoothed, eliminating wrinkles and unevenness, thereby improving the film's flatness. Furthermore, the smoothing plates can smooth the film before cutting, resulting in neater, burr-free cut edges. This not only improves the quality of the plastic bags but also reduces waste during the cutting process. Simultaneously, the smoothing plates allow for smooth film transport during bag making, reducing downtime or adjustment time caused by film wrinkles, thus improving production efficiency.
[0008] Preferably, the tensioning assembly includes a first tension roller, which is arranged alternately between the fixed box and the horizontal sealing machine. The first tension roller rotates inside the bag-making box. A second tension roller is rotatably connected to the middle of the inner wall of the bag-making box. A second tension roller is arranged alternately between the horizontal sealing machine and the vertical sealing machine. A third tension roller is rotatably connected to the middle of the inner wall of the bag-making box. A third tension roller is arranged alternately between the vertical sealing machine and the cutting blade. This step, by setting the first, second, and third tension rollers, can effectively adjust and control the tension of the plastic film, keeping it stable during conveying and processing. It avoids the plastic film from loosening or drifting due to insufficient tension, or deforming or even breaking due to excessive tension. Furthermore, by adjusting the first, second, and third tension rollers, the plastic film can be made smoother, eliminating or reducing wrinkles and ripples on the plastic film, resulting in a neat appearance and accurate dimensions for the finished plastic bags.
[0009] Preferably, the dust suction assembly comprises an air suction pipe fixed on the top of the fixing box, and a plurality of air suction holes are arranged in the side wall of the bottom of the fixing box, and the air suction pipe, the air suction holes and the fixing box are hollow and communicated. By arranging the air suction pipe, the air suction holes and the fixing box, the dust, debris and film waste generated during the bag making process can be removed, the adhesion of the dust, debris and film waste to the surface of the plastic film is reduced, the transparency and appearance quality of the plastic bag are affected, the static electricity on the surface of the plastic film can be effectively removed, and the influence of the static electricity on the film processing and packaging process is avoided.
[0010] Preferably, the lighting assembly comprises a plurality of support rods symmetrically arranged on both sides of the bag making box, a bellows is fixed to the middle of the side wall of the support rod, and a lighting lamp is arranged at the end of the bellows. By arranging the support rod, the bellows and the lighting lamp, the internal working area of the bag making machine can be illuminated, the workers can clearly see the conveying, cutting, heat sealing and other processing links of the plastic film, the accuracy and efficiency of the operation are improved, and the operation errors caused by unclear vision are reduced.
[0011] Preferably, a roller is rotatably connected to the bottom side wall of the flattening plate, and the roller rotates on the top of the bag making box. By arranging the roller, the contact area of the flattening plate and the plastic film can be increased, and the plastic film is flattened by the rolling of the roller, so that the damage of the plastic film caused by the direct contact between the flattening plate and the plastic film is reduced.
[0012] Preferably, a pair of observation windows are arranged in the middle of the side wall of the bag making box, and the observation windows are made of transparent material. By arranging the observation windows, the workers can directly observe the working state of the bag making machine without interrupting the production process, discover and correct the problems in the production process in time, such as film deviation, inaccurate cutting and poor heat sealing, so that the waste rate is reduced and the overall quality of the product is improved.
[0013] The application has the beneficial effects that by arranging the fixing rod, the fixing box and the flattening plate, the plastic film can be flattened, the wrinkles and unevenness on the film are eliminated, the flatness of the film is improved, the flattening plate can flatten the film before it is cut, the cutting edge is more neat and burr-free, the quality of the plastic bag is improved, the waste in the cutting process is reduced, the flattening plate also enables the film to be smoothly conveyed during the bag making process, the downtime or adjustment time caused by the wrinkles of the film is reduced, and the production efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS
[0014] The drawings described herein are used to provide further understanding of the application, constitute a part of the application, the illustrative embodiments of the application and the description thereof are used to explain the application, and do not constitute an improper limitation on the application. In the drawings:
[0015] Figure 1 is a perspective view of the present application;
[0016] Figure 2 is a sectional view of the bag making box in the present application;
[0017] Figure 3 is a schematic view of the cooperation structure of the cutting blade and the flattening roller in the present application;
[0018] Figure 4 is a schematic view of the cooperation structure of the air extraction pipe and the flattening plate in the present application;
[0019] Figure 5 is a schematic view of the cooperation structure of the air extraction hole and the fixing box in the present application.
[0020] In the drawings, 1, bag making box; 11, motor; 12, unwinding roller; 13, first top plate; 14, first electric push rod; 15, transverse sealing machine; 16, second top plate; 17, second electric push rod; 18, longitudinal sealing machine; 19, third top plate; 110, third electric push rod; 111, cutting blade; 2, fixing rod; 21, fixing box; 22, flattening plate; 3, first tensioning roller; 31, second tensioning roller; 32, third tensioning roller; 4, air extraction pipe; 41, air extraction hole; 5, supporting rod; 51, corrugated pipe; 52, illuminating lamp; 6, roller; 7, observation window. DETAILED DESCRIPTION
[0021] In the following, a plurality of embodiments of the present application will be disclosed with reference to the drawings. For the purpose of clear illustration, a plurality of practical details will be described in the following description. However, it should be understood that these practical details should not be used to limit the present application. That is, in some embodiments of the present application, these practical details are not necessary. In addition, for the purpose of simplifying the drawings, some conventional structures and components will be shown in a simple schematic manner in the drawings.
[0022] It should be noted that all directional references, such as upper, lower, left, right, front, rear, etc., used in the description and the drawings are only used for the purpose of explanation and are not intended to limit the present application. If the specific posture changes, the directional references will also change accordingly.
[0023] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and does not mean to particularly indicate the order or sequence, nor to limit the present application. It is only to distinguish the parts or operations described by the same technical terms, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can be explicitly or implicitly included at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of the ordinary skilled in the art. When the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor is it within the protection scope required by the present application.
[0024] In order to further understand the utility model content, characteristics and effects of the present application, the following examples are given, and the details are described as follows with reference to the drawings:
[0025] Referring to Figures 1 to 4, including the bag making box 1, the motor 11 is fixedly connected to the middle part of the side wall of the bag making box 1, the unwinding roller 12 is fixedly connected to the output end of the motor 11, the unwinding roller 12 rotates inside the bag making box 1, the flattening assembly is arranged on the inner side wall of the bag making box 1, the dust suction assembly is arranged on the bottom side wall of the flattening assembly, the first top plate 13 is fixedly arranged on the middle part of the inner side wall of the bag making box 1, the first electric push rod 14 is fixedly connected to the top side wall of the first top plate 13, the horizontal sealing machine 15 is assembled on the output end of the first electric push rod 14, the flattening assembly is arranged between the unwinding roller 12 and the horizontal sealing machine 15, the second top plate 16 is fixedly arranged on the middle part of the inner side wall of the bag making box 1, the second electric push rod 17 is fixedly connected to the top side wall of the second top plate 16, the longitudinal sealing machine 18 is assembled on the output end of the second electric push rod 17, the third top plate 19 is fixedly arranged on the middle part of the inner side wall of the bag making box 1, the third electric push rod 110 is fixedly connected to the top side wall of the third top plate 19, the cutting blade 111 is assembled on the output end of the third electric push rod 110, the tightening assembly is arranged between the flattening assembly, the horizontal sealing machine 15, the longitudinal sealing machine 18 and the cutting blade 111, the lighting assembly is arranged on the top side wall of the bag making box 1, when working, the staff winds the plastic film on the side wall of the unwinding roller 12, then passes the other end of the plastic film through the flattening assembly and the tightening assembly, then passes the other end of the plastic film through the bottom of the horizontal sealing machine 15, then winds the plastic film around the tightening assembly between the horizontal sealing machine 15 and the longitudinal sealing machine 18 to the bottom of the longitudinal sealing machine 18, then winds the plastic film around the tightening assembly between the longitudinal sealing machine 18 and the cutting blade 111 to the bottom of the cutting blade 111, at this time, the staff starts the motor 11, the motor 11 drives the unwinding roller 12 to rotate, when the unwinding roller 12 rotates, the plastic film wound on the side wall of the unwinding roller 12 is unwound, at this time, the plastic film moves inside the bag making box 1, at the same time when the motor 11 is started, the staff starts the first electric push rod 14, the second electric push rod 17 and the third electric push rod 110, at this time, the first electric push rod 14 pushes the horizontal sealing machine 15, so that the horizontal sealing machine 15 seals the plastic film moving to the bottom of the horizontal sealing machine 15, at the same time, the second electric push rod 17 pushes the longitudinal sealing machine 18, so that the longitudinal sealing machine 18 seals the plastic film moving to the bottom of the longitudinal sealing machine 18, and the third electric push rod 110 pushes the cutting blade 111, so that the cutting blade 111 cuts the plastic film moving to the bottom of the cutting blade 111, then the plastic film can be divided into a plurality of plastic bags, when the plastic film passes the bottom of the flattening assembly, the dust suction assembly arranged at the bottom of the flattening assembly can suck away the dust on the surface of the plastic film, when the working environment is relatively dark, the staff can turn on the lighting assembly to illuminate the inside of the bag making box 1.
[0026] Referring to Figures 1 to 5The flattening assembly comprises a fixed rod 2 fixedly connected to the inner wall of the bag making box 1, a fixed box 21 assembled in the middle of the side wall of the fixed rod 2, and a flattening plate 22 fixedly connected to the middle of the side wall of the fixed box 21. The flattening plate 22 is a pair of and symmetrically arranged on both sides of the fixed box 21. During operation, when the plastic film moves at the bottom of the flattening plate 22, the pair of flattening plates 22 will flatten the plastic film passing through the bottom, so that the plastic film is in a flat state. This step can flatten the plastic film by arranging the fixed rod 2, the fixed box 21 and the flattening plate 22, so as to eliminate the wrinkles and unevenness on the film, thereby improving the flatness of the film. The flattening plate 22 can flatten the film before cutting, so that the cutting edge is more neat and burr-free. This can not only improve the quality of the plastic bag, but also reduce waste during cutting. At the same time, the flattening plate 22 can also make the film smoothly transported during the bag making process, reduce the downtime or adjustment time caused by film wrinkles, and thus improve the production efficiency.
[0027] With reference to Figures 1 to 3 The tightening assembly comprises a plurality of first tensioning rollers 3 staggered between the fixed box 21 and the horizontal sealing machine 15. The first tensioning rollers 3 rotate inside the bag making box 1. A plurality of second tensioning rollers 31 are rotatably connected to the middle of the inner side wall of the bag making box 1 and staggered between the horizontal sealing machine 15 and the longitudinal sealing machine 18. A plurality of third tensioning rollers 32 are rotatably connected to the middle of the inner side wall of the bag making box 1 and staggered between the longitudinal sealing machine 18 and the cutting blade 111. During operation, when the unwinding roller 12 unwinds the plastic film, the plastic film will slide on the surface of the plurality of first tensioning rollers 3 arranged in a staggered manner, and then be sealed by the horizontal sealing machine 15. At this time, the plastic film slides on the surface of the plurality of second tensioning rollers 31 arranged in a staggered manner, and then is sealed by the horizontal sealing machine 15. Then, the plastic film slides on the surface of the plurality of third tensioning rollers 32 arranged in a staggered manner, and finally is cut by the cutting blade 111. This step can effectively adjust and control the tension of the plastic film by arranging the first tensioning rollers 3, the second tensioning rollers 31 and the third tensioning rollers 32, so that the plastic film remains stable during transportation and processing. This can avoid the plastic film from relaxing or drifting due to insufficient tension, or deforming or being pulled apart due to excessive tension. Moreover, the adjustment of the first tensioning rollers 3, the second tensioning rollers 31 and the third tensioning rollers 32 can make the plastic film more flat, eliminate or reduce the wrinkles and corrugations on the plastic film, and make the appearance of the plastic bag neat and the size accurate.
[0028] With reference to Figure 1 , Figure 2 , Figure 4 and Figure 5The dust suction assembly comprises a suction pipe 4 fixed at the top of the fixing box 21, and a plurality of suction holes 41 are formed in the side wall of the bottom of the fixing box 21. The suction pipe 4, the suction holes 41 and the fixing box 21 are hollow and communicate with each other. During operation, the suction pipe 4 is connected to the dust collector. Because the suction pipe 4, the suction holes 41 and the fixing box 21 are hollow and communicate with each other, air flow is sucked into the dust collector through the plurality of suction holes 41. This step can remove dust, debris and film waste and other impurities generated during bag making, reduce the influence of the impurities attached to the surface of the plastic film on the transparency and appearance quality of the plastic bag, effectively remove static electricity on the surface of the plastic film, and avoid the influence of static electricity on the film processing and packaging process.
[0029] With reference to Figure 1 , Figure 2 and Figure 4 , the lighting assembly comprises a plurality of support rods 5 symmetrically arranged on both sides of the bag making box 1. The support rods 5 are fixed with corrugated pipes 51 in the middle of the side wall. The corrugated pipes 51 are made of deformable material, and the end of the corrugated pipe 51 is provided with a lighting lamp 52. During operation, when the operator finds that the environment is dark, the operator adjusts the angle of the plurality of corrugated pipes 51 at the top of the bag making box 1, and then turns on the plurality of lighting lamps 52. At this time, the lighting lamps 52 can illuminate the inside of the bag making machine. This step can illuminate the internal working area of the bag making machine, so that the operator can clearly see the conveying, cutting, heat sealing and other processing links of the plastic film, which helps to improve the accuracy and efficiency of the operation and reduce the operation errors caused by unclear vision.
[0030] With reference to Figure 2 and Figure 5 , the bottom side wall of the flattening plate 22 is rotatably connected with a roller 6, and the roller 6 rotates on the top of the bag making box 1. This step can increase the contact area between the flattening plate 22 and the plastic film by arranging the roller 6, and the plastic film can be flattened by rolling the roller 6, thereby reducing the damage to the plastic film caused by the direct contact between the flattening plate 22 and the plastic film.
[0031] With reference to Figures 1 to 4 , a pair of observation windows 7 are formed in the middle of the side wall of the bag making box 1, and the observation windows 7 are made of transparent material. This step can allow the operator to directly observe the working state of the inside of the bag making machine without interrupting the production process, so as to timely find and correct problems in the production process, such as film deviation, inaccurate cutting and poor heat sealing, which helps to reduce the waste rate and improve the overall quality of the product.
[0032] In summary: the staff will plastic film winding on the side wall of the roll 12, then the other end of the plastic film through the flat assembly and tension assembly, and then from the bottom of the horizontal sealing machine 15, and then the plastic film from the horizontal sealing machine 15 and the tension assembly between the longitudinal sealing machine 18 on the bottom of the longitudinal sealing machine 18, and then the plastic film from the tension assembly between the longitudinal sealing machine 18 and the cutting blade 111 on the bottom of the cutting blade 111, at this time the staff start motor 11, motor 11 driven roll 12 rotation, roll 12 rotation will be wound on the plastic film side wall of the roll 12, at this time the plastic film will move inside the bag box 1, at the same time the staff start the first electric push rod 14, the second electric push rod 17 and the third electric push rod 110, at this time the first electric push rod 14 will push the horizontal sealing machine 15, so that the horizontal sealing machine 15 will move to the bottom of the plastic film sealing work, while the second electric push rod 17 will push the longitudinal sealing machine 18, so that the longitudinal sealing machine 18 will move to the bottom of the plastic film sealing work, and the third electric push rod 110 will push the cutting blade 111, so that the cutting blade 111 will move to the bottom of the plastic film cutting work, and then the plastic film can be split into a plurality of plastic bags, when the plastic film through the bottom of the flat assembly, the dust removal assembly provided at the bottom of the flat assembly will remove the dust on the surface of the plastic film, when the working environment is relatively dark, the staff can turn on the lighting assembly to illuminate the inside of the bag box 1, when the plastic film moves at the bottom of the flat plate 22, a pair of flat plate 22 will flatten the plastic film passing through the bottom, so that the plastic film is in a flat state, when the roll 12 unwinds the plastic film, the plastic film will slide on the surface of the first plurality of tension rollers 3, then be sealed by the horizontal sealing machine 15, at this time the plastic film slides from the surface of the plurality of second tension rollers 31, then be sealed by the horizontal sealing machine 15, and then slides from the surface of the plurality of third tension rollers 32, and finally be cut by the cutting blade 111, the staff will connect the suction pipe 4 with the dust collector, because the suction pipe 4, the suction hole 41 and the fixed box 21 are hollow and communicate, the airflow will be sucked into the dust collector from the plurality of suction holes 41, when the staff detects that the working environment is dark, adjust the angle of the plurality of bellows 51 on the top of the bag box 1, and then turn on the plurality of lighting lamps 52, at this time the lighting lamps 52 will illuminate the inside of the bag box 1.
[0033] The above merely describes the embodiments of the present application and is not intended to limit the present application. The present application can be variously changed and modified by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of the claims of the present application.
Claims
1. A feeding device of a plastic film bag making machine, comprising a bag making box (1), characterized in that: The middle of the side wall of the bag making box (1) is fixedly connected with a motor (11), the output end of the motor (11) is fixedly connected with a unwinding roller (12), the unwinding roller (12) rotates in the bag making box (1), the middle of the inner side wall of the bag making box (1) is provided with a flattening assembly, the bottom side wall of the flattening assembly is provided with a dust collection assembly, the middle of the inner side wall of the bag making box (1) is fixedly connected with a first top plate (13), the top side wall of the first top plate (13) is fixedly connected with a first electric push rod (14), the output end of the first electric push rod (14) is assembled with a horizontal sealing machine (15), the flattening assembly is arranged between the unwinding roller (12) and the horizontal sealing machine (15), the middle of the inner side wall of the bag making box (1) is fixedly connected with a second top plate (16), the top side wall of the second top plate (16) is fixedly connected with a second electric push rod (17), the output end of the second electric push rod (17) is assembled with a longitudinal sealing machine (18), the middle of the inner side wall of the bag making box (1) is fixedly connected with a third top plate (19), the top side wall of the third top plate (19) is fixedly connected with a third electric push rod (110), the output end of the third electric push rod (110) is assembled with a cutting blade (111), the flattening assembly, the horizontal sealing machine (15), the longitudinal sealing machine (18) and the cutting blade (111) are all provided with a tensioning assembly, and the top side wall of the bag making box (1) is provided with an illumination assembly.
2. The feeding device of a plastic film bag making machine according to claim 1, characterized in that: The flattening assembly comprises a fixed rod (2), the fixed rod (2) is fixedly connected to the inner wall of the bag making box (1), and the middle of the side wall of the fixed rod (2) is assembled with a fixed box (21). The middle of the side wall of the fixed box (21) is fixedly connected with a flattening plate (22), and the flattening plate (22) is a pair of and symmetrically arranged on both sides of the fixed box (21).
3. The feeding device of a plastic film bag making machine according to claim 1, characterized in that: The tensioning assembly comprises a first tensioning roller (3), the first tensioning roller (3) is a plurality of and staggered arranged between the fixed box (21) and the horizontal sealing machine (15), the first tensioning roller (3) rotates in the bag making box (1), the middle of the inner side wall of the bag making box (1) is rotatably connected with a second tensioning roller (31), the second tensioning roller (31) is a plurality of and staggered arranged between the horizontal sealing machine (15) and the longitudinal sealing machine (18), the middle of the inner side wall of the bag making box (1) is rotatably connected with a third tensioning roller (32), and the third tensioning roller (32) is a plurality of and staggered arranged between the longitudinal sealing machine (18) and the cutting blade (111).
4. The plastic film bag making machine's feeding device according to claim 1, characterized in that: The dust collection assembly comprises an air suction pipe (4), the air suction pipe (4) is fixedly connected to the top of the fixed box (21), a plurality of air suction holes (41) are formed in the bottom side wall of the fixed box (21), and the air suction pipe (4), the air suction holes (41) and the fixed box (21) are all hollow and communicated.
5. The plastic film bag making machine's feeding device according to claim 1, characterized in that: The illumination assembly comprises a supporting rod (5), the supporting rod (5) is a plurality of and symmetrically arranged on both sides of the bag making box (1), the middle of the side wall of the supporting rod (5) is fixedly connected with a bellows (51), the bellows (51) is a deformable material, and the end of the bellows (51) is assembled with an illuminating lamp (52).
6. The plastic film bag making machine's feeding device according to claim 2, characterized in that: The bottom side wall of the flattening plate (22) is rotatably connected with a roller (6), and the roller (6) rotates on the top of the bag making box (1).
7. The plastic film bag making machine's feeding device according to claim 6, characterized in that: The bag making box (1) is provided with a pair of observation windows (7) in the middle of the side wall, and the observation windows (7) are made of transparent material.