Traction conveying device of stationery inside page bag making machine

By designing the ring groove structure and air pipe blowing mechanism in the conveying device of the bag making machine, the problem of unstable transportation is solved, and more efficient transportation and cutting is achieved, which improves production efficiency and product quality.

CN222875469UActive Publication Date: 2025-05-16YONG LIYE TECH (HEYUAN) CO LTD
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Patent Information

Application Number
CN202421790359.9
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-07-26
Publication Date
2025-05-16
Estimated Expiration
2034-07-26

AI Technical Summary

Technical Problem

Existing bag making machines are prone to slip and deviation when conveying film stationery bags, especially in environments with high humidity and high static electricity, which leads to unstable transportation and affects production efficiency and product quality.

Method used

A traction conveying device for a stationery inner page bag making machine is designed, including a frame, a flip bracket, a first traction mechanism, a guide roller bracket, a second traction mechanism and a tracheal blowing mechanism. The conveying stability is improved by providing an annular groove on the upper and lower rollers, and using a tracheal blowing mechanism to prevent electrostatic adhesion.

Benefits of technology

Effectively prevent film stationery bags from slipping and deviation during the transportation process, improve conveying stability and cutting accuracy, and improve production efficiency and product quality.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a traction conveying device of a stationery inside page bag making machine. The traction conveying device comprises a rack, an overturning bracket, a first traction mechanism, a guide roller bracket, a second traction mechanism and an air pipe blowing mechanism. The overturning bracket is used for bearing a feeding roller wound with a thin film stationery bag, and the first traction mechanism is used for pulling out the thin film stationery bag on the feeding roller; the second traction mechanism comprises a first driving assembly, an upper roller and a lower roller. The upper roller of the second traction mechanism is provided with the first annular groove, the lower roller of the second traction mechanism is provided with the second annular groove, and the first annular groove and the second annular groove are arranged in a staggered mode, so that friction force of the surfaces of the upper roller and the lower roller can be increased, thin film stationery bags are prevented from slipping in the conveying process, and conveying stability is improved. The air pipe injection mechanism can uniformly inject airflow in the width direction of the film stationery bag so as to form airflow on the surface of the film stationery bag, adhesion caused by static electricity is prevented, and the conveying effect is improved.
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Description

Technical Field

[0001] The utility model relates to the field of bag making machines, in particular to a traction and conveying device of a stationery inner page bag making machine. Background Art

[0002] In modern stationery manufacturing and packaging industry, film stationery bags are a common and important packaging material used to protect and organize various document supplies, and the equipment for producing film stationery bags is a bag making machine.

[0003] In the prior art, the bag making machine is prone to slipping and deviation during the conveying process of the film stationery bags, especially in an environment with high humidity and static electricity, which leads to unstable conveying and reduced positioning accuracy in subsequent processes, affecting the production efficiency and product quality of the film stationery bags; in addition, when the film stationery bags are cut into sections, the film stationery bags are prone to deviation, resulting in uneven cutting, thus affecting the production quality of the product.

[0004] Therefore, the prior art has defects and needs to be improved. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a traction conveying device of a stationery inner page bag making machine which can convey stably and avoid slipping and deviation.

[0006] To achieve this purpose, the utility model adopts the following technical scheme: a traction and conveying device of a stationery inner page bag making machine, comprising a frame, a turnover bracket, a first traction mechanism, a guide roller bracket, a second traction mechanism and an air pipe blowing mechanism;

[0007] The flip bracket is arranged at the side end of the frame, and the flip bracket is used to support the feeding roller with the film stationery bag wound around it. The first traction mechanism is arranged on the frame at the side end of the flip bracket, and the first traction mechanism is used to pull out the film stationery bag on the feeding roller;

[0008] The guide roller bracket and the second traction mechanism are sequentially arranged on the frame along the traction and conveying direction of the film stationery bag, and the guide roller bracket is used to guide the film stationery bag into the second traction mechanism;

[0009] The second traction mechanism includes a first driving assembly, an upper roller and a lower roller, wherein the upper roller and the lower roller are respectively arranged on the frame, and the upper roller is connected to the lower roller through gear meshing, and the first driving assembly is connected to the end of the lower roller to drive the lower roller to rotate;

[0010] The upper roller is provided with a plurality of first annular grooves arranged at equal distances along its length direction, and the lower roller is provided with a plurality of second annular grooves arranged at equal distances along its length direction, and the first annular grooves are staggered with the second annular grooves;

[0011] The air pipe blowing mechanism includes a first air pipe and a second air pipe, the first air pipe is located at the side end of the upper roller, the first air pipe is provided with a plurality of first air branch pipes along the length direction, the first air branch pipe is bent downward, and the air outlet of the first air branch pipe is arranged toward the first annular groove, the second air pipe is located at the side end of the lower roller, the second air pipe is provided with a plurality of second air branch pipes along the length direction, the second air branch pipe is bent upward and passes through the second annular groove, and the diameter of the second air branch pipe is smaller than the depth of the second annular groove.

[0012] According to the technical solution, the traction and conveying device of the stationery inner page bag making machine further includes a cutting mechanism, which is located at the side end of the second traction mechanism and is used to cut the film stationery bag traction and conveyed by the second traction mechanism into sections;

[0013] The cutting mechanism includes a second driving assembly, a rotating shaft, an eccentric shaft sleeve, a pull rod, a lifting tool holder and a cutter. The rotating shaft is horizontally arranged at the bottom of the frame. The second driving assembly is connected to the rotating shaft in a transmission manner to drive the rotating shaft to rotate. The eccentric shaft sleeve is arranged at the end of the rotating shaft. The lifting tool holder is located above the frame. The eccentric shaft sleeve is connected to the lifting tool holder through a pull rod. The lifting tool holder is used to rise and fall with the rotation of the rotating shaft. The cutter is connected to the lifting tool holder.

[0014] By adopting the above-mentioned technical solutions, in the traction conveying device of the stationery inner page bag making machine, the cutting mechanism also includes an elastic film pressing component, which is arranged on the lifting knife frame, and the elastic film pressing component is used to press on the surface of the film stationery bag when the cutter is cutting;

[0015] The elastic film pressing assembly includes a connecting arm, a film pressing seat, a pressure rod, a limiting sleeve and a second spring, the connecting arm is connected to the lifting tool holder, the pressure rod passes through the connecting arm from top to bottom and is connected to the film pressing seat, a groove for accommodating the cutting knife is provided in the middle of the film pressing seat, conical pressure blocks are provided on both sides of the film pressing seat, the top of the pressure rod is located in the limiting sleeve, the second spring is provided between the pressure rod and the limiting sleeve, and the second spring is used to apply an elastic force to push the film pressing seat downward.

[0016] By adopting the above-mentioned technical solutions, in the traction and conveying device of the stationery inner page bag making machine, the cutting mechanism also includes a heating tube, which is arranged in the film pressing seat and is used to heat the temperature of the cutter located in the slot.

[0017] By adopting the above-mentioned technical solutions, in the traction and conveying device of the stationery inner page bag making machine, the second traction mechanism also includes a support seat, a sliding bearing seat and a second spring;

[0018] The sliding bearing seat is arranged at the end of the upper roller, the supporting seat is arranged at the side end of the frame, and a slide groove is arranged in the supporting seat, and the sliding bearing seat can be lifted and moved along the slide groove;

[0019] The second spring is arranged between the sliding bearing seat and the top wall of the sliding groove, and the second spring is used to apply an elastic force to the upper roller to move downward.

[0020] By adopting the above-mentioned technical solutions, in the traction and conveying device of the stationery inner page bag making machine, the first traction mechanism includes a third driving component, an active roller and a driven roller;

[0021] The active roller and the driven roller are respectively arranged on the frame, a gap for the film stationery bag to pass through is arranged between the active roller and the driven roller, and the third driving component is connected to the active roller to drive the active roller to rotate.

[0022] By adopting the above-mentioned technical solutions, in the traction conveying device of the stationery inner page bag making machine, the flip bracket includes a supporting bracket, a flip cylinder and a connecting shaft;

[0023] The side end of the supporting bracket is rotatably connected to the frame via the connecting shaft, the flip cylinder is arranged on the frame, the flip cylinder is connected to the supporting bracket, the flip cylinder is used to drive the supporting bracket to flip and swing around the connecting shaft, and the supporting bracket is provided with a positioning groove for positioning the feeding roller.

[0024] Compared with the prior art, the utility model has the following beneficial effects:

[0025] The utility model arranges a first annular groove on the upper roller of the second traction mechanism and a second annular groove on the lower roller, and the first annular groove and the second annular groove are arranged in a staggered manner, so that the friction force on the surfaces of the upper roller and the lower roller can be increased, thereby preventing the film stationery bag from slipping during the conveying process and improving the conveying stability; the air pipe blowing mechanism can evenly blow airflow along the width direction of the film stationery bag to form airflow on the surface of the film stationery bag, prevent adhesion caused by static electricity, and improve the conveying effect; the elastic film pressing component arranged on the cutting mechanism can contact and press the film stationery bag before the cutter, thereby preventing the bag from displacement or sliding during the cutting process, thereby improving the cutting accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0027] The structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification so as to facilitate understanding and reading by persons familiar with this technology. They are not used to limit the conditions under which the present invention can be implemented, and therefore have no substantive technical significance. Any structural modification, change in proportion or adjustment of size, without affecting the effects and purposes that can be achieved by the present invention, should still fall within the scope of the technical contents disclosed by the present invention.

[0028] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0029] Figure 2 This is a schematic diagram of the overall structure of the utility model from another perspective;

[0030] Figure 3 This is a schematic diagram of the structure of the second traction mechanism of the utility model;

[0031] Figure 4 This is a schematic diagram of the structure of the air pipe spray mechanism of the utility model;

[0032] Figure 5 This is a schematic diagram of the structure of the elastic film pressing component of the utility model;

[0033] Figure 6 This is a schematic structural diagram of the elastic film pressing component of the utility model from another perspective. DETAILED DESCRIPTION

[0034] In order to make the utility model's purpose, features, and advantages more obvious and easy to understand, the following will be combined with the drawings in the utility model embodiments to clearly and completely describe the technical solutions in the utility model embodiments. Obviously, the embodiments described below are only part of the utility model embodiments, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0035] In the description of the present invention, it should be understood that the terms "upper", "lower", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. It should be noted that when a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centrally arranged component at the same time.

[0036] The technical solution of the utility model is further explained below with reference to the accompanying drawings and through specific implementation methods.

[0037] like Figures 1 to 6 As shown, the embodiment of the utility model provides a traction conveying device for a stationery inner page bag making machine, comprising a frame 1, a turning bracket 2, a first traction mechanism 3, a guide roller bracket 4, a second traction mechanism 5 and an air pipe blowing mechanism 6;

[0038] The flip bracket 2 is arranged at the side end of the frame 1, and the flip bracket 2 is used to support the feeding roller 20 with a film stationery bag wound around it. The first traction mechanism 3 is arranged on the frame 1 at the side end of the flip bracket 2, and the first traction mechanism 3 is used to pull and pull out the film stationery bag on the feeding roller 20; the setting of the flip bracket 2 can facilitate the adjustment of the angle of the feeding roller 20 to better control the conveying tension of the film stationery bag, ensuring that the film stationery bag can be pulled and pulled out with appropriate tension; and it is also convenient for the installation and disassembly of the feeding roller 20.

[0039] The guide roller bracket 4 and the second traction mechanism 5 are sequentially arranged on the frame 1 along the traction and conveying direction of the film stationery bag. The guide roller bracket 4 is used to guide the film stationery bag into the second traction mechanism 5; the guide roller bracket 4 can guide and convey the film stationery bag to prevent it from deflecting during the conveying process.

[0040] The second traction mechanism 5 includes a first driving assembly 51, an upper roller 52 and a lower roller 53. The upper roller 52 and the lower roller 53 are respectively arranged on the frame 1, and the upper roller 52 and the lower roller 53 are meshed and connected by gears. The first driving assembly 51 is connected to the end of the lower roller 53 to drive the lower roller 53 to rotate; the lower roller 53 is meshed and connected with the upper roller 52 through gears, thereby driving the upper roller 52 to rotate synchronously, so that the film stationery bag is clamped between the two rollers, thereby realizing the traction and transportation of the film stationery bag;

[0041] The upper roller 52 is provided with a plurality of equidistant first annular grooves 520 along its length direction, and the lower roller 53 is provided with a plurality of equidistant second annular grooves 530 along its length direction, and the first annular grooves 520 and the second annular grooves 530 are staggered; the first annular grooves 520 and the second annular grooves 530 can increase the friction force on the surfaces of the upper roller 52 and the lower roller 53, prevent the film stationery bag from slipping during the conveying process, and improve the conveying stability.

[0042] like Figure 3 and Figure 4 As shown, the air pipe blowing mechanism 6 includes a first air blowing pipe 61 and a second air blowing pipe 62. The first air blowing pipe 61 is located at the side end of the upper roller 52. The first air blowing pipe 61 is provided with a plurality of first air branch pipes 611 along the length direction. The first air branch pipes 611 are bent downward. The air outlet of the first air branch pipe 611 is arranged toward the first annular groove 520. The second air blowing pipe 62 is located at the side end of the lower roller 53. The second air blowing pipe 62 is provided with a plurality of second air branch pipes 621 along the length direction. The second air branch pipes 621 are bent upward and pass through the second annular groove 530. The diameter of the second air branch pipe 621 is smaller than the depth of the second annular groove 530. The air pipe blowing mechanism 6 can blow air to the surface of the thin film stationery bag to form a layer of airflow on the surface of the thin film stationery bag to prevent the thin film stationery bag from sticking together due to static electricity or other reasons during the conveying process, thereby improving the conveying effect. The first air blowing pipe 61 is provided with a plurality of first air distribution pipes 611 along the length direction, and the second air blowing pipe 62 is provided with a plurality of second air distribution pipes 621 along the length direction, so that the airflow is evenly distributed in the width direction of the entire film stationery bag, thereby preventing the local airflow from being too strong or too weak, thereby improving the force uniformity of the film stationery bag during transportation, and reducing the risk of deformation or damage; the diameter of the second air distribution pipe 621 is set to be smaller than the depth of the second annular groove 530 to prevent the second air distribution pipe 621 from affecting the normal rotation of the lower roller 53.

[0043] like Figure 2 and Figure 3As shown, further, a cutting mechanism 7 is included, the cutting mechanism 7 is located at the side end of the second traction mechanism 5, the cutting mechanism 7 is used to cut the film stationery bag pulled and transported by the second traction mechanism 5 in sections, the cutting mechanism 7 includes a second driving component 71, a rotating shaft 72, an eccentric shaft sleeve 73, a pull rod 74, a lifting knife holder 75 and a cutter 76, the rotating shaft 72 is horizontally arranged at the bottom of the frame 1, and the second driving component 71 is connected to the rotating shaft 72 to drive the rotating shaft 7 2 rotates, the eccentric sleeve 73 is arranged at the end of the rotating shaft 72, the lifting knife frame 75 is located above the frame 1, the eccentric sleeve 73 is connected to the lifting knife frame 75 through a pull rod 74, the lifting knife frame 75 is used to rise and fall with the rotation of the rotating shaft 72, the cutter 76 is connected to the lifting knife frame 75, when the lifting knife frame 75 descends, the cutter 76 cuts into the film stationery bag to achieve segmented cutting; when the lifting knife frame 75 rises, the cutter 76 leaves the film stationery bag to prepare for the next cutting action.

[0044] like Figure 5 and Figure 6 As shown, further, the cutting mechanism 7 also includes an elastic film pressing component 77, which is arranged on the lifting tool holder 75, and is used to press the film pressing component 77 on the surface of the film stationery bag when the cutter 76 is cutting. The elastic film pressing component 77 includes a connecting arm 771, a film pressing seat 772, a pressing rod 773, a limiting sleeve 774 and a first spring 775. The connecting arm 771 is connected to the lifting tool holder 75, and the pressing rod 773 is connected to the lifting tool holder 75. 73 passes through the connecting arm 771 from top to bottom and is connected to the film pressing seat 772. A groove for accommodating the cutter 76 is provided in the middle of the film pressing seat 772. Conical pressure blocks 7721 are provided on both sides of the film pressing seat 772. The top of the pressure rod 773 is located in the limiting sleeve 774. The first spring 775 is provided between the pressure rod 773 and the limiting sleeve 774. The first spring 775 is used to apply a downward pushing elastic force to the film pressing seat 772. When the cutting mechanism 7 is in operation, the second driving assembly 71 can drive the rotating shaft 72 to rotate, and drive the lifting tool holder 75 to move up and down through the eccentric shaft sleeve 73 and the pull rod 74. When the lifting tool holder 75 descends, since the extended length of the conical pressure block 7721 is greater than the length of the cutter 76, the conical pressure block 7721 of the film pressing seat 772 contacts the film stationery bag before the cutter 76. The conical pressure block 7721 first presses the film stationery bag to achieve preliminary positioning and downward pressing. As the lifting tool holder 75 continues to descend, the film pressing seat 772 can overcome the elastic force of the first spring 775 to press and fix the film stationery bag. After the film stationery bag is pressed and fixed, the cutter 76 continues to descend and contacts the film stationery bag, thereby achieving stable segmented cutting and preventing the film stationery bag from shifting during the cutting process, thereby improving the cutting accuracy.

[0045] like Figure 6 As shown, further, the cutting mechanism 7 also includes a heating tube 78, which is arranged in the film pressing seat 772, and is used to heat the temperature of the cutter 76 located in the slot. When cutting the film stationery bag, the heated cutter 76 can not only improve the cutting effect, but also seal the edge of the cut to prevent the material at the cut from being delaminated or fluffed, thereby improving the appearance and practicality of the product.

[0046] like Figure 4 As shown, further, the second traction mechanism 5 also includes a support seat 54, a sliding bearing seat 55 and a second spring 56. The sliding bearing seat 55 is arranged at the end of the upper roller 52, and the support seat 54 is arranged at the side end of the frame 1. A slide groove 540 is provided in the support seat 54, and the sliding bearing seat 55 can be lifted and moved along the slide groove 540. The second spring 56 is arranged between the sliding bearing seat 55 and the top wall of the slide groove 540. The second spring 56 is used to apply a downward elastic force to the upper roller 52. With this arrangement, the downward elastic force applied by the second spring 56 can enable the upper roller 52 to automatically adjust the clamping force according to the thickness and material of the film stationery bag, thereby achieving a stable conveying and traction effect.

[0047] like Figure 1 and Figure 2 As shown, further, the first traction mechanism 3 includes a third driving component 31, an active roller 32 and a driven roller 33, the active roller 32 and the driven roller 33 are respectively arranged on the frame 1, and a gap is provided between the active roller 32 and the driven roller 33 for the film stationery bag to pass through, and the third driving component 31 is connected to the active roller 32 to drive the active roller 32 to rotate.

[0048] like Figure 1 and Figure 2 As shown, further, the flip bracket 2 includes a supporting bracket 21, a flip cylinder 22 and a connecting shaft 23, the side end of the supporting bracket 21 is rotatably connected to the frame 1 through the connecting shaft 23, the flip cylinder 22 is arranged on the frame 1, the flip cylinder 22 is connected to the supporting bracket 21, the flip cylinder 22 is used to drive the supporting bracket 21 to flip and swing around the connecting shaft 23, and the supporting bracket 21 is provided with a positioning groove 210 for positioning and placing the feeding roller 20. The flip cylinder 22 can drive the supporting bracket 21 to flip and swing, thereby adjusting the position and angle of the feeding roller 20 for installation, disassembly and maintenance operations.

[0049] As described above, the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features can be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A traction conveying device for a stationery inner page bag making machine, characterized in that: It includes a frame, a turning bracket, a first traction mechanism, a guide roller bracket, a second traction mechanism and an air pipe blowing mechanism; The flip bracket is arranged at the side end of the frame, and the flip bracket is used to support the feeding roller with the film stationery bag wound around it. The first traction mechanism is arranged on the frame at the side end of the flip bracket, and the first traction mechanism is used to pull out the film stationery bag on the feeding roller; The guide roller bracket and the second traction mechanism are sequentially arranged on the frame along the traction and conveying direction of the film stationery bag, and the guide roller bracket is used to guide the film stationery bag into the second traction mechanism; The second traction mechanism includes a first driving assembly, an upper roller and a lower roller, wherein the upper roller and the lower roller are respectively arranged on the frame, and the upper roller is connected to the lower roller through gear meshing, and the first driving assembly is connected to the end of the lower roller to drive the lower roller to rotate; The upper roller is provided with a plurality of first annular grooves arranged at equal distances along its length direction, and the lower roller is provided with a plurality of second annular grooves arranged at equal distances along its length direction, and the first annular grooves are staggered with the second annular grooves; The air pipe blowing mechanism includes a first air pipe and a second air pipe, the first air pipe is located at the side end of the upper roller, the first air pipe is provided with a plurality of first air branch pipes along the length direction, the first air branch pipe is bent downward, and the air outlet of the first air branch pipe is arranged toward the first annular groove, the second air pipe is located at the side end of the lower roller, the second air pipe is provided with a plurality of second air branch pipes along the length direction, the second air branch pipe is bent upward and passes through the second annular groove, and the diameter of the second air branch pipe is smaller than the depth of the second annular groove.

2. The traction conveying device of the stationery inner page bag making machine according to claim 1 is characterized in that: It also includes a cutting mechanism, which is located at the side end of the second traction mechanism and is used to cut the film stationery bag pulled and transported by the second traction mechanism into sections; The cutting mechanism includes a second driving assembly, a rotating shaft, an eccentric shaft sleeve, a pull rod, a lifting tool holder and a cutter. The rotating shaft is horizontally arranged at the bottom of the frame. The second driving assembly is connected to the rotating shaft in a transmission manner to drive the rotating shaft to rotate. The eccentric shaft sleeve is arranged at the end of the rotating shaft. The lifting tool holder is located above the frame. The eccentric shaft sleeve is connected to the lifting tool holder through a pull rod. The lifting tool holder is used to rise and fall with the rotation of the rotating shaft. The cutter is connected to the lifting tool holder.

3. The traction conveying device of the stationery inner page bag making machine according to claim 2, characterized in that: The cutting mechanism also includes an elastic film pressing component, which is arranged on the lifting knife frame and is used to press on the surface of the film stationery bag when the cutter is cutting; The elastic film pressing assembly includes a connecting arm, a film pressing seat, a pressure rod, a limiting sleeve and a second spring, the connecting arm is connected to the lifting tool holder, the pressure rod passes through the connecting arm from top to bottom and is connected to the film pressing seat, a groove for accommodating the cutting knife is provided in the middle of the film pressing seat, conical pressure blocks are provided on both sides of the film pressing seat, the top of the pressure rod is located in the limiting sleeve, the second spring is provided between the pressure rod and the limiting sleeve, and the second spring is used to apply an elastic force to push the film pressing seat downward.

4. The traction conveying device of the stationery inner page bag making machine according to claim 3 is characterized in that: The cutting mechanism further comprises a heating tube, which is arranged in the film pressing seat and is used to heat the temperature of the cutting knife in the slot.

5. The traction conveying device of the stationery inner page bag making machine according to claim 1, characterized in that: The second traction mechanism also includes a support seat, a sliding bearing seat and a second spring; The sliding bearing seat is arranged at the end of the upper roller, the supporting seat is arranged at the side end of the frame, and a slide groove is arranged in the supporting seat, and the sliding bearing seat can be lifted and moved along the slide groove; The second spring is arranged between the sliding bearing seat and the top wall of the sliding groove, and the second spring is used to apply an elastic force to the upper roller to move downward.

6. The traction conveying device of the stationery inner page bag making machine according to claim 1, characterized in that: The first traction mechanism includes a third driving assembly, an active roller and a driven roller; The active roller and the driven roller are respectively arranged on the frame, a gap for the film stationery bag to pass through is arranged between the active roller and the driven roller, and the third driving component is connected to the active roller to drive the active roller to rotate.

7. The traction conveying device of the stationery inner page bag making machine according to claim 1, characterized in that: The flip bracket includes a supporting bracket, a flip cylinder and a connecting shaft; The side end of the supporting bracket is rotatably connected to the frame via the connecting shaft, the flip cylinder is arranged on the frame, the flip cylinder is connected to the supporting bracket, the flip cylinder is used to drive the supporting bracket to flip and swing around the connecting shaft, and the supporting bracket is provided with a positioning groove for positioning the feeding roller.