A bag-making device with roll-up function

Abstract

This invention discloses a bag-making device with a roll-up function. A secondary flip motor pre-flips the labeling frame downwards, allowing an antistatic arc plate to cover the rolled plastic bags. A metering pump sprays antistatic liquid through a nozzle frame onto the inner surface of the free end of the plastic bag's tail, facilitating anti-curling and rewinding of the wetted tail end. The antistatic liquid further reduces the amount of frictional static electricity on the inner surface of the free end of the plastic bag's tail. The antistatic brush bristles of the antistatic arc plate flatten the free end of the rolled plastic bag's tail while simultaneously transferring static electricity generated on its outer surface to the antistatic brush body via conductive wires. A hot air blower sprays heated air through an air jet box onto the outer surface of the rolled plastic bag, ironing out any curling at the interface and drying any excess antistatic liquid leaking from the outer surface. This allows the bag-making machine to eliminate static electricity at the free end of each roll of plastic bag.

Description

Technical Field

[0001] This invention belongs to the field of plastic bag processing technology, and specifically relates to a bag making device with a rolling function. Background Technology

[0002] After plastic bags are made by the bag-making machine, the resulting strip-shaped plastic bags need to be quantitatively rolled by the bag-rolling mechanism to ensure that each roll contains the same number of bags, facilitating individual sales. During the rolling process, the conveying mechanism on the bag-making machine transfers the processed plastic bags to the bag-rolling mechanism. The bag-rolling mechanism rolls the conveyed plastic bags in batches using a rotary disc. At the same time, a labeling mechanism is needed to attach and fix the labels at the free ends of each roll of plastic bags. Through the quantitative rotation of the bag-rolling mechanism and the cooperation of preset position sensors, the labeling mechanism can continuously attach labels to the free ends of each roll at a fixed position, preventing the rolled plastic bags from unraveling. Since the equipment shell connected to the guide rollers on the conveying mechanism cannot guarantee good grounding, and some guide rollers have undergone anodizing treatment, naturally forming aluminum oxide on the surface, which is non-conductive, and the plastic bags inevitably come into contact with non-conductive objects during transportation, static electricity is generated. The generation of static electricity makes it difficult for the plastic bags to be tightly rolled together, affecting the rolling quality of the plastic bags. Therefore, anti-static brushes are usually pre-installed on the side of the rolling mechanism.

[0003] For example, Chinese patent CN113264398A discloses a rolling equipment for processing plastic bags, including a base, a positioning mechanism, a supporting mechanism, a tensioning mechanism, an elimination mechanism, a leveling mechanism, a rotating mechanism, a rolling mechanism, and a control device. The positioning mechanism is fixedly connected to the top left side of the base by bolts. The rolling mechanism is rotatably connected between the left and right sides of the inner wall of the rotating mechanism. The control device is electrically connected to the tensioning mechanism, the elimination mechanism, the leveling mechanism, the rotating mechanism, and the rolling mechanism via wires. The plastic bag passes between two discs. Through the counter-rotating motion of two first motors, the discs drive brushes to flatten the conveyed plastic bag. When the flattened plastic bag passes through the through-groove, the static eliminator drives the static elimination plate to eliminate static electricity on the conveyed plastic bag. By flattening the plastic bag and then removing static electricity, wrinkles can be prevented during the rolling process, and the plastic bag roll will not carry static electricity, thus improving the quality of plastic bag rolling.

[0004] However, the above solution has the following shortcomings: Although setting an electrostatic brush on the side of the bag rolling mechanism can remove static electricity from the plastic bags to be rolled up, the plastic bags will still have contact friction with the labeling mechanism and the non-conductive oxide layer on the winding roller during the subsequent bag rolling process. Although the amount of static electricity generated by the contact friction at the tail of each roll of plastic bags is small, it will cause the free ends of the rolled plastic bags to curl up under the action of static electricity, affecting the rolling quality of the plastic bags. Therefore, the existing bag rolling mechanism does not have the function of eliminating static electricity at the free ends of each roll of plastic bags. Summary of the Invention

[0005] The purpose of this invention is to provide a bag-making device with a roll-up function, which solves the problems existing in the background art by introducing an electrostatic elimination mechanism into the labeling mechanism.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a bag-making device with a bag-rolling function, comprising a bag-making machine body and a bag-rolling tray and a labeling tray disposed thereon, wherein the bag-rolling tray is pre-loaded with an electrostatic brush for eliminating static electricity from the plastic bag to be rolled, and the labeling tray is detachably provided with a spring plate, wherein an antistatic arc plate is provided at the end of the spring plate and covers the upper surface of the rolled plastic bag, wherein the inner arc surface of the antistatic arc plate is arranged with antistatic bristles and contacts the outer surface of the rolled plastic bag, and a conductive wire is provided between the electrostatic brush and the antistatic arc plate for conducting static electricity elimination at the free end of the rolled plastic bag;

[0007] The antistatic arc plate has a liquid guiding cavity inside, and the inlet and outlet of the liquid guiding cavity are connected to the liquid guiding pipe and the nozzle frame, respectively. The bag making machine body is equipped with a liquid storage tank, and the outlet of the liquid storage tank is connected to the liquid guiding pipe through a quantitative liquid discharge pump. The nozzle frame can spray the antistatic liquid to the free end of the rolled plastic bag.

[0008] Preferably, the roll bag frame includes symmetrically arranged take-up rollers on the left and right sides, and tensioning shafts symmetrically arranged at the top and bottom between the two take-up rollers. The conveying mechanism on the bag making machine body conveys the strip plastic bags sequentially along the left take-up roller, the upper tensioning shaft and the right take-up roller. The strip plastic bags are provided with separation cuts for tearing at fixed intervals, and the bag making machine body is provided with a pressing block for separating the strip plastic bags from the rolled plastic bags after being separated on the right side.

[0009] The labeling frame is used to attach the label to the free end of the rolled plastic bag for fixation. The bag making machine body is equipped with a main flip motor and a secondary flip motor. The main flip motor and the secondary flip motor are used to rotate and temporarily store the electrostatic brush and the antistatic arc plate on the labeling frame, respectively.

[0010] Preferably, the rotating shaft end of the auxiliary rotating motor is connected to the labeling frame, and after the electrostatic brush body and the antistatic arc plate are temporarily stored after rotation, it is convenient for the roll bag reel frame to interchange the rotation positions of the two sides of the winding rollers.

[0011] Preferably, the antistatic arc plate has raised portions on both sides, which facilitates the smoothing of the free end of the rolled plastic bag. The inner arc surface of the antistatic arc plate is provided with an air jet box, and the bag making machine body is provided with a hot air blower. The exhaust end of the hot air blower is connected to the air jet box through an exhaust pipe. The air jet box can blow hot air at 40-50°C into the free end of the upper surface of the rolled plastic bag for ironing.

[0012] Preferably, heat-conducting arc plates are provided on both sides of the jet box, and the anti-static brush bristles penetrate through the heat-conducting arc plates and transfer heat. The anti-static brush bristles can transfer heat from the heat-conducting arc plates to the outer surface of the rolled plastic bag through contact.

[0013] Preferably, the rear side wall of the bag making machine body is provided with a slide groove, and a limiting roller frame is slidably fitted inside the slide groove. A reset spring connected to the limiting roller frame is provided inside the slide groove. The middle section of the conductive wire is sleeved on the limiting roller frame. As the electrostatic brush and the antistatic arc plate rotate and are retracted, the reset spring will drive the conductive wire to move upward and be retracted through the limiting roller frame.

[0014] Compared with the prior art, the beneficial effects of the present invention are: the free end of the plastic bag tail will separate from the electrostatic brush body, and at the same time, the auxiliary flip motor will pre-flip the labeling frame downward, so that the antistatic arc plate is placed above the rolled plastic bag. The quantitative liquid pump will spray the antistatic liquid inside the storage tank into the inner surface of the free end of the plastic bag tail through the liquid guide pipe, the liquid guide cavity and the nozzle frame, so that the free end of the plastic bag tail in the wet state is easy to prevent curling and roll up. In addition, the antistatic liquid further reduces the amount of frictional static electricity on the inner surface of the free end of the plastic bag tail.

[0015] While the antistatic brush bristles on the inner arc surface of the antistatic arc plate flatten the free end of the rolled plastic bag, they can also transfer the static electricity generated on its outer surface to the antistatic brush body through the heat-conducting arc plate, the antistatic arc plate, and the conductive wire. At the same time, the hot air blower discharges the heated air from the exhaust pipe and finally from the jet box end. The hot air discharged from the jet box end is sprayed into the outer surface of the rolled plastic bag to further iron out the raised joints of the outer surface of the rolled plastic bag with hot air, and dry the excess antistatic liquid that leaks out on the outer surface of the rolled plastic bag, so that the bag making machine has the function of eliminating static electricity at the free end of each roll of plastic bag. Attached Figure Description

[0016] Figure 1 This is a partial cross-sectional view of the overall structure of the present invention;

[0017] Figure 2 for Figure 1 A partial schematic diagram;

[0018] Figure 3 for Figure 2 A schematic diagram showing the rotating storage position of the electrostatic brush body and the antistatic arc plate;

[0019] Figure 4 for Figure 2 A partial schematic diagram of the antistatic arc plate;

[0020] Figure 5 for Figure 4 A schematic diagram of a local area of ​​the antistatic brush bristles on the antistatic arc plate;

[0021] Figure 6 This is a schematic diagram showing the electrostatic curling of both sides of the free end of the plastic bag tail according to the present invention;

[0022] Figure 7 This is a schematic diagram showing the combination of the electrostatic brush body, the antistatic arc plate, the spring plate, and the conductive wire of the present invention.

[0023] In the diagram: 1. Bag making machine body; 2. Labeling frame; 3. Electrostatic brush body; 4. Rebound plate; 5. Antistatic arc plate; 6. Antistatic brush bristles; 7. Conductive wire; 8. Liquid guiding chamber; 9. Liquid guiding pipe; 10. Nozzle frame; 11. Liquid storage tank; 12. Quantitative discharge pump; 13. Rewinding roller section; 14. Tensioning shaft; 15. Pressure block; 16. Main tilting motor; 17. Auxiliary tilting motor; 18. Lifting section; 19. Air jet box; 20. Hot air blower; 21. Exhaust pipe; 22. Heat-conducting arc plate; 23. Slide groove; 24. Limiting roller frame; 25. Return spring; 101. Plastic bag; 201. Bag roll frame; 301. Vertical rod. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0025] Please see Figure 1-7 The present invention provides a technical solution:

[0026] Example 1:

[0027] A bag-making device with a bag-rolling function includes a bag-making machine body 1, a bag-rolling reel frame 201, and a labeling frame 2 mounted thereon. For details of the bag-making machine body 1 and the labeling frame 2, please refer to the BL1020L-AR coreless rope-threading garbage bag making machine produced by Zhejiang Baihao Machinery Co., Ltd. The bag-rolling reel frame 201 is pre-installed with an electrostatic brush 3 for eliminating static electricity on the plastic bag 101 to be rolled. The electrostatic brush 3 is a carbon fiber electrostatic elimination brush, specifically a QP-MS conductive brush produced by Shanghai Qipu Electronic Equipment Co., Ltd. The grounding part of the electrostatic brush 3 is grounded through an external aluminum alloy frame. The labeling frame 2 is detachably equipped with a rebound plate 4, which is an arched elastic steel plate and also has electrostatic conductivity. The rebound plate 4 is grounded separately to the equipment casing via a grounding wire. The end of the rebound plate 4 is provided with a cover for the rolled plastic bag. The antistatic arc plate 5 on the upper surface of the bag 101 is made of an aluminum alloy plate with conductive properties. The spring plate 4 can make the antistatic arc plate 5 tilt towards the upper surface of the plastic bag 101. When the electrostatic brush body 3 is in use, the distance between the inner arc surface of the antistatic arc plate 5 and the upper surface of the plastic bag 101 is 5 mm. The inner arc surface of the antistatic arc plate 5 is arranged with antistatic bristles 6 and contacts the outer surface of the rolled plastic bag 101. The antistatic bristles 6 are fixed to the inner arc surface of the antistatic arc plate 5 by embedding, which effectively avoids the oxidation of the surface of the antistatic arc plate 5, which would prevent the static electricity transfer between them. The antistatic bristles 6 are made of carbon fiber material with excellent thermal and electrical conductivity. The antistatic bristles 6 and the antistatic arc plate 5 are electrically connected. A conductive wire 7 is provided between the electrostatic brush body 3 and the antistatic arc plate 5 and is used to conduct static electricity elimination to the free end of the rolled plastic bag 101.

[0028] The antistatic arc plate 5 has a liquid guiding chamber 8 inside, and the inlet and outlet ends of the liquid guiding chamber 8 are connected to the liquid guiding pipe 9 and the nozzle frame 10, respectively. A liquid storage tank 11 is installed on the bag making machine body 1. The liquid storage tank 11 stores antistatic liquid produced by Shenzhen Chuangshun Antistatic Technology Co., Ltd. After the antistatic liquid is applied to the surface of the plastic bag 101, a transparent film is formed, providing a long-lasting and effective static dissipation function. It can effectively eliminate the static accumulation caused by friction, prevent static interference and dust adhesion. The outlet end of the liquid storage tank 11 is connected to the liquid guiding pipe 9 through a quantitative discharge pump 12. The quantitative discharge pump 12 is manufactured by Shijiazhuang Baifu Machinery Co., Ltd. The electromagnetic diaphragm metering pump produced by the company, the quantitative discharge pump 12 can be adapted to the specifications according to actual use needs. At the same time, the power supply and control terminal of the quantitative discharge pump 12 are connected to the power supply and controller on the bag making machine body 1, respectively. The nozzle frame 10 is composed of a liquid outlet box connected to the liquid guiding chamber 8, and fourteen atomizing nozzles are pre-installed on the liquid outlet side of the liquid outlet box with detachable threads. The shape of the water mist sprayed by the nozzles can be adapted to the specifications of the plastic bag 101. The nozzle frame 10 can spray antistatic liquid to the free end of the rolled plastic bag 101, thereby further eliminating the static electricity at the end of the plastic bag 101.

[0029] Example 2:

[0030] Based on Embodiment 1, the bag roll holder 201 includes symmetrically arranged take-up roller sections 13. Each take-up roller section 13 has a winding roller. The rotation of the winding roller can wind up the free end of the falling plastic bag 101. Simultaneously, the winding roller can retract for easy removal of the rolled-up plastic bag 101. The take-up roller section 13 is a standard public product technology found in the BL1020L-AR coreless rope-threading garbage bag making machine, and will not be elaborated upon. It also includes tensioning shafts 14 symmetrically arranged above and below the take-up roller sections 13 on both sides. The tensioning shafts 14 can tension the plastic bag 101 conveyed to the labeling rack 2. The conveying mechanism on the bag making machine body 1 transports the strip-shaped plastic bag sequentially along the left take-up roller section 13 and the upper... The tensioning shaft 14 and the right-side take-up roller 13 are conveyed. The strip plastic bag 101 is provided with a separation cut at a fixed distance for tearing. The separation cut is set so that the strip plastic bag 101 is fixed on one side and will separate when the other side is pulled. The bag making machine body 1 is provided with a pressure block 15 for separating the strip plastic bag 101 from the roll plastic bag 101 after being spun on the right side. The pressure block 15 is moved up and down or flipped by a lifting mechanism pre-set on the bag making machine body 1. The lifting mechanism can be any one of electric push rod or lifting screw assembly, which are existing mature products and will not be described in detail. The pressure block 15 can press and fix the left side of the separation cut on the plastic bag 101 each time, which facilitates the separation of each roll of plastic bag 101.

[0031] The labeling frame 2 is used to attach labels to the free end of the rolled plastic bag 101 for fixation. The bag making machine body 1 is equipped with a main flip motor 16 and an auxiliary flip motor 17. The main flip motor 16 and the auxiliary flip motor are Shenzhen Boyuan Transmission Technology Co., Ltd. 38F-520 models. The specifications of the flip motors can be adapted to the actual power requirements without limitation. The main flip motor 16 and the auxiliary flip motor 17 are used to rotate and temporarily store the electrostatic brush body 3 and the antistatic arc plate 5 on the labeling frame 2. The power terminals of the main flip motor 16 and the auxiliary flip motor 17 are connected to the corresponding power control terminals of the bag making machine body 1. At the same time, the flipping part of the main flip motor 16 is detachably connected to the electrostatic brush body 3 through the vertical rod 301 and the electrostatic brush body 3 by screw connection. The movement of the main flip motor 16 and the auxiliary flip motor 17 can avoid collision with the electrostatic brush body 3 and the antistatic arc plate 5 when the two sides of the winding roller 13 rotate and switch positions.

[0032] The rotating shaft end of the auxiliary rotating motor 17 is connected to the labeling frame 2, and after the electrostatic brush body 3 and the antistatic arc plate 5 are temporarily stored after rotation, it is convenient for the roll bag tray frame 201 to switch the rotation positions of the two sides of the winding roller section 13.

[0033] Example 3:

[0034] Further explanation based on Embodiment 2: The antistatic arc plate 5 has raised portions 18 on both sides. The raised portions 18 are arc-shaped. The raised portions 18 facilitate the smoothing of the free ends of the rolled plastic bags 101, while avoiding contact wear between the two sides of the antistatic arc plate 5 and the plastic bags 101. An air jet box 19 is provided on the inner arc surface of the antistatic arc plate 5. The air jet box 19 is a hollow box with an open end at the bottom. A hot air blower 20 is provided on the bag making machine body 1. The hot air blower 20 can be an integrated type or an independent type. The separate type consists of a fan and an electric heating wire. The working temperature of the electric heating wire is limited to 40-50℃ by an external temperature controller. The fan draws in outside air and heats it through the electric heating wire. The exhaust end of the hot air blower 20 is connected to the air jet box 19 through the exhaust pipe 21. The air jet box 19 can blow hot air at 40-50℃ into the free end of the upper surface of the rolled plastic bag 101 for ironing. Since the hot air at 40-50℃ is low heat, it will not cause heat damage to the outer surface of the plastic bag 101.

[0035] Both sides of the jet box 19 are provided with heat-conducting arc plates 22. The heat-conducting arc plates 22 are made of aluminum alloy or copper and have good thermal conductivity and static electricity conductivity. The anti-static brush bristles 6 penetrate through the heat-conducting arc plates 22 and transfer heat. The anti-static brush bristles 6 can transfer the heat on the heat-conducting arc plates 22 to the outer surface of the rolled plastic bag 101 through contact.

[0036] A vertical slide groove 23 is provided on the rear side wall of the bag making machine body 1. A limiting roller frame 24 is slidably fitted inside the slide groove 23. The limiting roller frame 24 is composed of a limiting slide and a pre-set I-shaped plate at the outer end. The limiting roller frame 24 can slide on the slide groove 23 in an anti-detachment manner. The anti-detachment method can adjust the shape of the sliding part of the limiting roller frame 24. An anti-detachment groove that cooperates with the limiting roller frame 24 is pre-set inside the slide groove 23. A return spring 25 connected to the limiting roller frame 24 is provided inside the slide groove 23. The return spring 25 can generate an upward spring force on the limiting roller frame 24. The middle section of the conductive wire 7 is sleeved on the I-shaped plate on the limiting roller frame 24 for limiting. As the electrostatic brush body 3 and the antistatic arc plate 5 rotate and retract, the return spring 25 will drive the conductive wire 7 to move upward and retract through the limiting roller frame 24, so that the conductive wire 7 is continuously kept in a pre-tensioned state and avoids the conductive wire 7 from getting tangled during the up and down movement.

[0037] The working principle is as follows: The electrostatic brush 3 can continuously remove static electricity from the conveyed strip plastic bag 101. After the pressure block 15 presses and separates the plastic bag 101 located on the right winding roller 13, the free end of the plastic bag 101 will separate from the electrostatic brush 3. At the same time, the auxiliary flip motor 17 will flip the labeling frame 2 down in advance, so that the antistatic arc plate 5 is placed above the rolled plastic bag 101. The quantitative discharge pump 12 sprays the antistatic liquid inside the storage tank 11 through the liquid guide pipe 9, the liquid guide cavity 8 and the nozzle frame 10 into the inner surface of the free end of the plastic bag 101. This makes it easier to prevent the free end of the plastic bag 101 from curling up when it is wet. The antistatic liquid further reduces the amount of frictional static electricity on the inner surface of the free end of the plastic bag 101.

[0038] While the antistatic brush bristles 6 on the inner arc surface of the antistatic arc plate 5 flatten the free end of the rolled plastic bag 101, the static electricity generated on its outer surface is also transferred to the antistatic brush body 3 through the heat-conducting arc plate 22, the antistatic arc plate 5, and the conductive wire 7. At the same time, the hot air blower 20 discharges heated air through the exhaust pipe 21 from the end of the jet box 19. The hot air discharged from the end of the jet box 19 is sprayed onto the outer surface of the rolled plastic bag 101 to further iron out the raised joints on the outer surface of the rolled plastic bag 101 and dry the excess antistatic liquid that has leaked onto the outer surface of the rolled plastic bag 101. After the static electricity treatment is completed, the right take-up roller 13 retracts, causing the rolled plastic bag 101 to... 1. The material is discharged, and the electrostatic brush 3 and the antistatic arc plate 5 are moved away from the rotation trajectory of the take-up roller 13 by the rotation of the main flip motor 16 and the auxiliary rotation motor 17. At this time, the left take-up roller 13 takes up the free end of the previously separated strip plastic bag 101. The rotation of the bag roll frame 201 causes the positions of the two take-up rollers 13 to be reversed, and the newly rolled plastic bag 101 is tensioned by the tensioning shaft 14 above. Then the main flip motor 16 drives the electrostatic brush 3 to flip down and perform electrostatic treatment on the plastic strip 101 in the conveying process again. The above electrostatic elimination operation is repeated so that the bag making machine body 1 has the function of eliminating electrostatics at the free end of each roll of plastic bag 101.

[0039] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A bag making device with bag rolling function, comprising a bag making machine body, a bag rolling disc holder and a label sticking holder arranged on the bag making machine body, and an electrostatic brush body for electrostatic elimination of plastic bags to be rolled is prearranged on the bag rolling disc holder, characterized in that: The labeling frame is detachably equipped with a spring plate. At the end of the spring plate is an antistatic arc plate that covers the upper surface of the rolled plastic bag. The inner arc surface of the antistatic arc plate is arranged with antistatic bristles and contacts the outer surface of the rolled plastic bag. A conductive wire is provided between the antistatic brush and the antistatic arc plate to conduct static electricity elimination to the free end of the rolled plastic bag. The antistatic arc plate has a liquid guiding cavity inside, and the inlet and outlet of the liquid guiding cavity are connected to the liquid guiding pipe and the nozzle frame, respectively. The bag making machine body is equipped with a liquid storage tank, and the outlet of the liquid storage tank is connected to the liquid guiding pipe through a quantitative liquid discharge pump. The nozzle frame can spray the antistatic liquid to the free end of the rolled plastic bag.

2. The bag making apparatus having a bag rolling function according to claim 1, characterized in that: The bag roll frame includes symmetrically placed take-up rollers on the left and right sides, and tensioning shafts symmetrically arranged between the upper and lower parts of the take-up rollers on both sides. The conveying mechanism on the bag making machine body conveys the strip plastic bags sequentially along the left take-up roller, the upper tensioning shaft and the right take-up roller. The strip plastic bags are provided with separation cuts for tearing at fixed intervals, and the bag making machine body is provided with a pressing block for separating the strip plastic bags from the rolled plastic bags after being separated on the right side. The labeling frame is used to attach the label to the free end of the rolled plastic bag for fixation. The bag making machine body is equipped with a main flip motor and a secondary flip motor. The main flip motor and the secondary flip motor are used to rotate and temporarily store the electrostatic brush and the antistatic arc plate on the labeling frame, respectively.

3. The bag making apparatus having a bag rolling function according to claim 2, characterized in that: The rotating shaft of the auxiliary rotating motor is connected to the labeling frame, and the electrostatic brush and the antistatic arc plate are temporarily stored after rotation, which facilitates the interchange of the rotation positions of the two sides of the roll-up rollers on the roll-up tray frame.

4. The bag making apparatus having a bag rolling function according to claim 1, wherein: The antistatic arc plate has raised portions on both sides, which facilitates the smoothing of the free ends of the rolled plastic bags. An air jet box is provided on the inner arc surface of the antistatic arc plate, and a hot air blower is provided on the bag making machine body. The exhaust end of the hot air blower is connected to the air jet box through an exhaust pipe. The air jet box can blow hot air at 40-50°C into the free ends of the upper surface of the rolled plastic bags for ironing.

5. The bag making apparatus having a bag rolling function according to claim 4, wherein: Both sides of the jet box are provided with heat-conducting arc plates. The anti-static brush bristles penetrate through the heat-conducting arc plates and transfer heat. The anti-static brush bristles can transfer the heat on the heat-conducting arc plates to the outer surface of the rolled plastic bag through contact.

6. A bag-making device with a rolling function according to claim 3, characterized in that: The rear side wall of the bag making machine is provided with a slide groove, and a limiting roller frame slides and fits inside the slide groove. A reset spring connected to the limiting roller frame is also provided inside the slide groove. The middle section of the conductive wire is sleeved on the limiting roller frame. As the electrostatic brush and the antistatic arc plate rotate and are retracted, the reset spring will drive the conductive wire to move upward and be retracted through the limiting roller frame.

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