Discharging traction device capable of removing static electricity and used for production of wrapping film

Abstract

The discharging traction device comprises a box body, an inlet is formed in the lower side of the middle of the left side wall of the box body, and mounting plates are fixedly connected to the positions, located on the front side and the rear side of the inlet, of the left side wall of the box body. Ion fans are fixedly connected to the upper sides of the inner side walls of the mounting plates on the front side and the rear side, the ion fans are sequentially and evenly distributed from top to bottom, a water tank is fixedly connected to the middle of the bottom of the box body, and an ultrasonic vibrator is fixedly connected to the middle of the bottom of the inner cavity wall of the water tank. The discharging traction device capable of removing the static electricity and used for production of the wrapping film is reasonable in structural design, the static electricity generated by friction during conveying of the wrapping film can be removed, meanwhile, the static electricity is effectively prevented from being generated again during winding, and therefore the quality of the wrapping film is improved, a winding roller can be conveniently mounted and dismounted, and convenience is improved.

Description

Technical Field

[0001] This utility model relates to the field of stretch film production technology, specifically to a material discharge traction device for stretch film production that can remove static electricity. Background Technology

[0002] Stretch film, also known as stretch film or heat shrink film, is a type of plastic film with high tensile strength and self-adhesive properties. It is usually made of plastic materials such as polyethylene and polyvinyl chloride, which have good flexibility, transparency and corrosion resistance, and can adapt to different packaging needs.

[0003] In existing stretch film production, most traction devices wind up the stretch film after production. During the conveying and winding process, friction between the stretch film and equipment components generates static electricity on the film surface. However, existing traction devices are relatively simple and cannot remove the static electricity generated on the film surface. As a result, the stretch film will attract dust and impurities from the air under the influence of static electricity, thus reducing the quality of the stretch film. In addition, the winding rollers on existing traction devices are mostly fixed, making the installation and disassembly of the winding rollers cumbersome and inconvenient. Therefore, we propose a discharge traction device for stretch film production that can remove static electricity. Utility Model Content

[0004] The purpose of this utility model is to provide a discharge traction device for the production of stretch film that can remove static electricity, so as to solve the problems mentioned in the background art. The existing traction devices are relatively simple and cannot remove the static electricity generated on the surface of the stretch film, which causes the stretch film to attract dust and impurities in the air under the influence of static electricity, thereby reducing the quality of the stretch film. In addition, the take-up rollers on the existing traction devices are mostly fixed, which makes the installation and disassembly of the take-up rollers more troublesome and inconvenient.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a discharge traction device for producing electrostatic-removing wrapping film, comprising a housing, an inlet located at the lower side of the middle of the left side wall of the housing, mounting plates fixedly connected to the front and rear sides of the left side wall of the housing located at the inlet, ion fans fixedly connected to the upper side of the inner side walls of the mounting plates on the front and rear sides, and the ion fans being evenly distributed from top to bottom, a water tank fixedly connected to the middle of the bottom of the housing, an ultrasonic transducer fixedly connected to the middle of the bottom of the inner wall of the water tank, humidification ports located on the left and right sides of the middle of the bottom of the inner wall of the housing, the housing being connected to the water tank through the humidification ports, a fan fixedly connected to the inner wall of the humidification ports, a digital display heating rod inserted into the lower side of the right side wall of the water tank, and the left end of the digital display heating rod extending into the inner cavity of the water tank, an exhaust port located at the middle of the top of the inner wall of the housing, and an exhaust fan fixedly connected to the inner wall of the exhaust port.

[0006] As a further description of the above technical solution:

[0007] A controller is fixedly connected to the left side wall of the box and above the entrance. A humidity sensor is fixedly connected to the middle of the rear side of the inner wall of the box. The controller is electrically connected to the blower fan, the exhaust fan and the humidity sensor respectively.

[0008] As a further description of the above technical solution:

[0009] A transparent L-shaped pipe is connected to the lower side of the middle of the left side wall of the water tank.

[0010] As a further description of the above technical solution:

[0011] A vertical groove is formed on the upper right side of the inner wall of the housing. A plate is slidably connected to the inner wall of the vertical groove. The left side wall of the plate extends into the inner cavity of the housing. An electric telescopic cylinder is fixedly connected to the top right side of the housing. The bottom end of the electric telescopic cylinder extends into the inner cavity of the vertical groove and is fixedly connected to the top of the plate. A motor housing is fixedly connected to the left side of the top middle of the plate. A servo motor is fixedly connected to the bottom of the inner wall of the motor housing by bolts. The servo motor is electrically connected to the controller. The output shaft of the servo motor extends through the plate to the outside of the plate. A damping shaft is fixedly connected to the middle of the bottom of the inner wall of the housing. A turntable is fixedly connected to the top of the damping shaft and the output shaft of the servo motor. A take-up roller is held between the inner side walls of the turntable on the upper and lower sides.

[0012] As a further description of the above technical solution:

[0013] The take-up roller has a mounting groove in the middle of its top and bottom. A mounting block is inserted into the inner cavity of the mounting groove. The end of the mounting block extends to the outside of the mounting groove and is fixedly connected to the inner wall of the turntable.

[0014] As a further description of the above technical solution:

[0015] A waterproof ultrasonic sensor is fixedly connected to the right side of the inner wall of the housing and below the vertical groove. The waterproof ultrasonic sensor is electrically connected to the controller.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. This static-removing stretch film production discharge traction device uses an ion fan to remove static electricity generated during the conveying process of the stretch film. Simultaneously, a water tank, along with an ultrasonic transducer and a digital display heating rod, disperses the water in the tank into tiny particles, forming a water mist that is released into the air. A humidification port, in conjunction with a delivery fan, sends moisture into the chamber, and an exhaust port, along with an exhaust fan, draws the moisture upwards, increasing the airflow rate inside the chamber and ensuring more even moisture distribution. This increases the humidity inside the chamber, removing residual static electricity not removed by the ion fan and preventing the regeneration of static electricity during winding. A humidity sensor detects the internal humidity of the chamber, and a controller adjusts the speed of the delivery and exhaust fans to ensure stable humidity levels. This device effectively removes static electricity generated by friction during the conveying of the stretch film and prevents its regeneration during winding, thereby improving the quality of the stretch film.

[0018] 2. This static-removing stretch film production discharge traction device uses an electric telescopic cylinder to drive the plate body to move downwards in conjunction with the vertical groove, which in turn moves the upper turntable downwards. The lower turntable clamps the take-up roller, and the mounting square groove and mounting block fix and limit the take-up roller, thus facilitating the installation and removal of the take-up roller. A servo motor drives the take-up roller to rotate and wind up the stretch film through a damping shaft. In addition, a waterproof ultrasonic sensor and controller monitor the winding thickness of the take-up roller to prevent over-winding. The device facilitates the installation and removal of the take-up roller, thereby improving convenience. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of a static-removing discharge traction device for producing stretch film according to the present invention.

[0020] Figure 2 This is a schematic front sectional view of the structure of a static-removing discharge traction device for producing stretch film according to the present invention.

[0021] Figure 3 This is a top sectional view of the structural box of a discharge traction device for producing stretch film that can remove static electricity, as proposed in this utility model.

[0022] Figure 4 This is a top sectional view of the winding roller structure of a static-removing stretch film production discharge traction device proposed in this utility model.

[0023] In the diagram: 100, cabinet; 110, inlet; 111, mounting plate; 112, ion fan; 113, water tank; 114, ultrasonic transducer; 115, humidification port; 116, exhaust fan; 117, digital display heating rod; 118, exhaust port; 119, exhaust fan; 120, controller; 121, humidity sensor; 130, transparent L-shaped tube; 140, vertical groove; 141, plate; 142, electric telescopic cylinder; 143, motor box; 144, servo motor; 145, damping shaft; 146, turntable; 147, take-up roller; 150, mounting square groove; 151, mounting block; 160, waterproof ultrasonic sensor. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] This utility model provides a static-removing discharge traction device for stretch film production. It can remove static electricity generated by friction during stretch film conveying and effectively prevents the regeneration of static electricity during winding, thereby improving the quality of the stretch film. It also allows for easy installation and disassembly of the winding roller 147, thus enhancing convenience. Please refer to [link to relevant documentation]. Figure 1-4 Including the housing 100;

[0028] Please refer to it again. Figure 1-3An inlet 110 is located on the lower side of the middle of the left side wall of the housing 100. The inlet 110 is used to allow the stretch film to enter the housing 100. Mounting plates 111 are fixedly connected to the left side wall of the housing 100 and to the front and rear sides of the inlet 110. The mounting plates 111 are used to mount ion fans 112. Ion fans 112 are fixedly connected to the upper side of the inner side wall of the mounting plates 111 on the front and rear sides. The ion fans 112 are used to remove static electricity generated during the transport of the stretch film. The ion fans 112 are evenly distributed from top to bottom. A water tank 113 is fixedly connected to the middle of the bottom of the housing 100. The water tank 113 is used to hold water. An ultrasonic transducer 114 is fixedly connected to the middle of the bottom of the inner wall of the water tank 113. The ultrasonic transducer 114 is used to generate high-frequency vibration. Water is broken down into tiny particles, forming a mist that is dispersed into the air, thereby increasing air humidity. Residual static electricity not removed by the ion fan 112 is removed, and static electricity is prevented from regenerating during winding. Humidification ports 115 are located on both sides of the bottom center of the inner wall of the housing 100. These ports are used to install a blower fan 116. The housing 100 is connected to the water tank 113 via the humidification ports 115. The blower fan 116 is fixedly connected to the inner wall of the humidification ports 115, and it delivers humidified air into the housing 100. A digital display heating rod 117 is inserted into the lower right side wall of the water tank 113. This heating rod heats the water to a suitable temperature, reducing the surface tension of the water, making atomization easier, and maintaining a certain water temperature. The left end of the digital display heating rod 117 extends into the inner cavity of the water tank 113. An exhaust vent 118 is located at the top center of the inner cavity wall of the housing 100. The exhaust vent 118 is used to install an exhaust fan 119. The exhaust fan 119 is fixedly connected to the inner cavity wall of the exhaust vent 118. The exhaust fan 119 works with the exhaust vent 118 to increase the airflow rate inside the housing 100, making the humidity distribution more even. A controller 120 is fixedly connected to the left side wall of the housing 100, above the inlet 110. The controller 120 works with the humidity sensor 121 to adjust the speed of the supply fan 116 and the exhaust fan 119, thus maintaining a stable humidity inside the housing 100, preventing it from becoming too high or too low. A [unclear - possibly a device or device] is fixedly connected to the middle of the rear side of the inner cavity wall of the housing 100. Humidity sensor 121 is used to monitor the humidity inside the chamber 100, thereby cooperating with controller 120, air supply fan 116, and exhaust fan 119 to control the humidity inside the chamber 100. Controller 120 is electrically connected to air supply fan 116, exhaust fan 119, and humidity sensor 121. A transparent L-shaped tube 130 is connected to the lower side of the middle of the left side wall of water tank 113. The transparent L-shaped tube 130 is used to add water into the chamber 100 and facilitate the viewing of the water level. Clean water is added to water tank 113 through transparent L-shaped tube 130, and then digital display heating rod 117 is activated to heat the clean water to a suitable temperature. Stretch film is fed into chamber 100 through inlet 110 for winding. Ultrasonic transducer 114 and ion fan 112 are activated.Ionizing fan 112 blows air carrying positive and negative ions onto the stretch film to neutralize and remove static electricity. Ultrasonic transducer 114 uses high-frequency oscillation to break water into tiny particles, forming a water mist that is dispersed into the air. Then, supply fan 116 and exhaust fan 119 are activated. Supply fan 116 sends moisture into the chamber 100 through humidification port 115, while exhaust fan 119, in conjunction with exhaust port 118, draws moisture upwards from the bottom of chamber 100, promoting air circulation and ensuring even distribution of moisture within chamber 100. This effectively removes residual static electricity on the stretch film that was not removed by ionizing fan 112, while preventing the regeneration of static electricity during winding. During winding, the humidity sensor 121 monitors the humidity inside the housing 100. When the humidity is too high, the humidity sensor 121 controls the controller 120 to increase the speed of the exhaust fan 119 while decreasing the speed of the delivery fan 116 to expel excess moisture. Once the humidity reaches normal levels, the speeds of the exhaust fan 119 and delivery fan 116 are restored. Conversely, when the humidity is low, the controller 120 controls the exhaust fan 119 to decrease the speed while increasing the speed of the delivery fan 116 to accelerate the delivery of moisture. Once the humidity reaches normal levels, the speeds of the exhaust fan 119 and delivery fan 116 are restored, thus ensuring that the inside of the housing 100 maintains a certain level of humidity.

[0029] In summary, this method can remove static electricity generated by friction during the conveying of the stretch film and effectively prevent the regeneration of static electricity during winding, thereby improving the quality of the stretch film.

[0030] Please refer to it again. Figure 1-4A vertical groove 140 is formed on the upper right side of the inner wall of the housing 100, which is used to limit the movement of the plate 141. The plate 141 is slidably connected to the inner wall of the vertical groove 140 and is used to drive the upper turntable 146 to move. The left side wall of the plate 141 extends into the inner cavity of the housing 100. An electric telescopic cylinder 142 is fixedly connected to the top right side of the housing 100. The electric telescopic cylinder 142 is used to drive the plate 141 to move. The bottom end of the electric telescopic cylinder 142 extends into the inner cavity of the vertical groove 140 and is fixedly connected to the top of the plate 141. A motor housing 143 is fixedly connected to the left side of the top middle of the plate 141. The motor housing 143 is used to protect the servo motor 144. The bottom of the inner wall of the motor housing 143 is fixed with bolts. A servo motor 144 is connected to drive the upper turntable 146 to move. The servo motor 144 is electrically connected to the controller 120. The output shaft of the servo motor 144 extends through the plate 141 to the outside of the plate 141. A damping shaft 145 is fixedly connected to the middle of the bottom of the inner wall of the housing 100. The damping shaft 145 is used to enable the lower turntable 146 to rotate in coordination with the upper turntable 146. At the same time, it can provide a certain resistance to help control the tension of the wrapping film, prevent loosening and displacement, and improve the winding effect. The top of the damping shaft 145 and the output shaft of the servo motor 144 are fixedly connected to the turntable 146. The upper and lower turntables 146 cooperate to clamp and fix the winding roller 147 and drive the winding roller 147 to rotate. This design facilitates the installation and removal of the take-up roller 147. The take-up roller 147 is held between the inner walls of the upper and lower turntables 146. The take-up roller 147 is used to wind up the wrapping film. A mounting slot 150 is formed between the top and bottom of the take-up roller 147. The mounting slot 150 is used to install a mounting block 151. The mounting block 151 is inserted into the inner cavity of the mounting slot 150. The mounting block 151 is used to cooperate with the mounting slot 150 to limit the installation of the take-up roller 147. The end of the mounting block 151 extends to the outside of the mounting slot 150 and is fixedly connected to the inner wall of the turntable 146. A waterproof ultrasonic sensor 160 is fixedly connected to the right side of the inner wall of the housing 100, below the vertical groove 140. The waterproof ultrasonic sensor 160 is used to monitor the take-up roller 147. The thickness of the winding film is adjusted so that when a certain winding thickness is reached, the servo motor 144 is shut off via controller 120. The waterproof ultrasonic sensor 160 is electrically connected to controller 120. The winding roller 147 is placed on the lower turntable 146, allowing the lower mounting block 151 to insert into the lower mounting slot 150. The electric telescopic cylinder 142 is activated, causing the plate 141 to move downwards in conjunction with the vertical groove 140. This causes the plate 141 to move the upper turntable 146 downwards, allowing the upper mounting block 151 to insert into the upper mounting slot 150, thus completing the installation of the winding roller 147. Disassembly is very convenient; simply raise the plate 141 using the electric telescopic cylinder 142 to disengage the upper turntable 146 from the winding roller 147. The servo motor 144 is then activated.The servo motor 144's output shaft rotates, driving the upper turntable 146 to rotate. The upper turntable 146, through the mounting slot 150 and mounting block 151, drives the take-up roller 147 and the lower turntable 146, along with the damping shaft 145, to rotate simultaneously, winding up the stretch film. A waterproof ultrasonic sensor 160 monitors the thickness of the stretch film on the take-up roller 147, allowing the controller 120 to stop the servo motor 144 once the desired thickness is reached, preventing excessive winding of the stretch film.

[0031] In summary, the winding roller 147 can be easily installed and disassembled, thereby improving convenience.

[0032] In practical use, those skilled in the art add clean water to the water tank 113 through the transparent L-shaped tube 130, then activate the digital display heating rod 117 to preheat the water to a suitable temperature. Next, activate the ultrasonic transducer 114, which uses high-frequency vibration to break the water into tiny particles, forming a water mist that is dispersed into the air. Then, activate the blower fan 116 and exhaust fan 119. The blower fan 116 delivers moisture into the chamber 100 through the humidification port 115, while the exhaust fan 119, in conjunction with the exhaust port 118, draws moisture upwards from the bottom of the chamber 100, promoting air circulation and ensuring even distribution of moisture within the chamber 100. Finally, unwind the winding roller 147. The upper turntable 146 is placed on the lower turntable 146 so that the lower mounting block 151 is inserted into the lower mounting square groove 150. The electric telescopic cylinder 142 is activated to drive the plate 141 to move downward in coordination with the vertical groove 140. The plate 141, in turn, drives the upper turntable 146 to move downward so that the upper mounting block 151 is inserted into the upper mounting square groove 150, thus completing the installation of the take-up roller 147. For disassembly, the plate 141 is simply raised by the electric telescopic cylinder 142 so that the upper turntable 146 is detached from the take-up roller 147. The stretch film is fed into the housing 100 through the inlet 110 and wrapped around the take-up roller 147. The servo motor 144 is activated, and the output shaft of the servo motor 144 rotates to drive the upper turntable. Rotating the upper turntable 146, the upper turntable 146, through the mounting slot 150 and mounting block 151, drives the winding roller 147 and the lower turntable 146, in conjunction with the damping shaft 145, to rotate simultaneously, winding the stretch film. During winding, the ion fan 112 is activated, blowing air carrying positive and negative ions onto the stretch film to neutralize and remove static electricity. Then, as the film enters the housing 100, the internal moisture effectively removes any residual static electricity not removed by the ion fan 112, while preventing static electricity from regenerating during winding. The humidity sensor 121 monitors the humidity inside the housing 100. When the humidity is too high, the humidity sensor 121 controls the controller 120 to... The speed of exhaust fan 119 is increased while the speed of delivery fan 116 is decreased to expel excess moisture. Once the moisture level reaches normal, the speeds of exhaust fan 119 and delivery fan 116 are restored. Conversely, when the moisture level is low, the controller 120 controls the speed of exhaust fan 119 to decrease while the speed of delivery fan 116 is increased to accelerate the delivery of moisture. Once the moisture level reaches normal, the speeds of exhaust fan 119 and delivery fan 116 are restored, thereby ensuring that the inside of the housing 100 maintains a certain level of humidity. The waterproof ultrasonic sensor 160 monitors the thickness of the wrapping film on the winding roller 147. When the winding thickness is reached, the controller 120 controls the servo motor 144 to stop, thereby removing the wound winding roller 147.

[0033] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0034] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A discharge traction device for producing stretch film that can remove static electricity, characterized in that: The enclosure includes a housing (100), with an entrance (110) on the lower side of the middle of the left side wall of the housing (100). Mounting plates (111) are fixedly connected to the left side wall of the housing (100) and to the front and rear sides of the entrance (110). Ionizing fans (112) are fixedly connected to the upper side of the inner walls of the mounting plates (111) on both sides, and the ionizing fans (112) are evenly distributed from top to bottom. A water tank (113) is fixedly connected to the middle of the bottom of the housing (100). An ultrasonic transducer (114) is fixedly connected to the middle of the bottom of the inner wall of the water tank (113). Humidification ports (115) are opened on the left and right sides at the bottom center of the inner cavity wall of the box (100). The box (100) is connected to the water tank (113) through the humidification ports (115). A fan (116) is fixedly connected to the inner cavity wall of the humidification port (115). A digital display heating rod (117) is inserted into the lower side of the right side wall of the water tank (113), and the left end of the digital display heating rod (117) extends into the inner cavity of the water tank (113). An exhaust port (118) is opened at the top center of the inner cavity wall of the box (100). An exhaust fan (119) is fixedly connected to the inner cavity wall of the exhaust port (118).

2. The discharge traction device for producing stretch film with static electricity removal capability according to claim 1, characterized in that: A controller (120) is fixedly connected to the left side wall of the housing (100) and above the entrance (110). A humidity sensor (121) is fixedly connected to the middle of the rear side of the inner wall of the housing (100). The controller (120) is electrically connected to the blower fan (116), the exhaust fan (119) and the humidity sensor (121).

3. The discharge traction device for producing stretch film capable of removing static electricity according to claim 2, characterized in that: A transparent L-shaped pipe (130) is connected to the lower side of the middle of the left side wall of the water tank (113).

4. The discharge traction device for producing stretch film with static electricity removal capability according to claim 2, characterized in that: A vertical groove (140) is formed on the upper side of the middle right side of the inner wall of the housing (100). A plate (141) is slidably connected to the inner wall of the vertical groove (140). The left side wall of the plate (141) extends into the inner cavity of the housing (100). An electric telescopic cylinder (142) is fixedly connected to the top right side of the housing (100). The bottom end of the electric telescopic cylinder (142) extends into the inner cavity of the vertical groove (140) and is fixedly connected to the top of the plate (141). A motor housing (143) is fixedly connected to the left side of the middle top of the plate (141). 3) A servo motor (144) is fixedly connected to the bottom of the inner cavity wall by bolts, and the servo motor (144) is electrically connected to the controller (120). The output shaft of the servo motor (144) extends through the plate (141) to the outside of the plate (141). A damping shaft (145) is fixedly connected to the middle of the bottom of the inner cavity wall of the box (100). A turntable (146) is fixedly connected to the top of the damping shaft (145) and the output shaft of the servo motor (144). A take-up roller (147) is held between the inner sidewalls of the turntable (146) on the upper and lower sides.

5. The discharge traction device for producing stretch film with static electricity removal capability according to claim 4, characterized in that: The take-up roller (147) has a mounting groove (150) at the middle of its top and bottom. A mounting block (151) is inserted into the inner cavity of the mounting groove (150). The end of the mounting block (151) extends to the outside of the mounting groove (150) and is fixedly connected to the inner wall of the turntable (146).

6. The discharge traction device for producing stretch film with static electricity removal capability according to claim 4, characterized in that: A waterproof ultrasonic sensor (160) is fixedly connected to the right side of the inner wall of the housing (100) and below the vertical groove (140), and the waterproof ultrasonic sensor (160) is electrically connected to the controller (120).

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