A packaging bag forming apparatus and a forming method thereof

Abstract

The application provides a packaging bag forming equipment, which comprises a rack, a winding assembly and a molten material device for hot-melt raw material, and further comprises a film blowing device, a dust removal assembly and a film winding device, the film blowing device is used for blowing and moving the plastic film upwards into the film winding device after the plastic slurry is extruded to form a ring-shaped plastic film; the dust removal assembly comprises a mounting frame, a cleaning assembly and rotating rollers, the rubber rollers are rotatably installed on the mounting frame, the rotating rollers are symmetrically arranged at the upper and lower ends of the mounting frame, the fur belts are arranged on the rotating rollers, the fur belts are in contact with the rubber rollers, and the first driving device for driving the mounting frame to overturn is arranged on the film blowing device; the application can solve the problem that the dust in the air is easily adhered to the film in the molten state which has not been completely cooled under the action of the cooling air flow when the cooling device in the prior art cools the film, thereby reducing the film production quality.

Description

A packaging bag forming device and its forming method Technical Field

[0001] This invention relates to the field of packaging bag forming technology, specifically to a packaging bag forming equipment and its forming method. Background Technology

[0002] Packaging bags are primarily produced using blown film machines, which heat and melt plastic particles before blowing them into a thin film. The machine mainly consists of an extruder, die head, mold head, cooling device, bubble stabilizer, herringbone plate, traction roller, and winding device. The workflow is as follows: dried polyethylene particles are added to the hopper and, by their own weight, enter the screw. When the particles contact the screw's beveled edge, the rotating beveled edge exerts a thrust perpendicular to the beveled edge, propelling the plastic particles forward. During this movement, friction occurs between the plastic and the screw, between the plastic and the barrel, and between the particles themselves, along with collisions and friction. Simultaneously, the plastic gradually melts due to external heating of the barrel. The molten plastic is filtered through the die head to remove impurities and exits through the mold orifice. It then passes through an air ring for cooling, the bubble stabilizer, the blown film through the herringbone plate and traction roller, and finally, the winding device rolls the finished film into a roll.

[0003] The existing air ring technology uses direct airflow for air supply, resulting in a short heat exchange time between the cold air and the film, leading to poor cooling effect. Furthermore, the use of multiple equally spaced, circumferentially arranged air supply pipes to deliver air at fixed positions can easily cause different expansion ratios in different parts of the film, hindering uniform shaping. To address the problems in the existing technology, CN202320524497.1 discloses a blown film stretching device for plastic bags, including a blown film frame, the bottom of which... The device is equipped with a film outlet head, a circular groove in the middle of the film outlet head, an exhaust pipe in the center of the groove, a rotatable blowing ring between the film outlet head and the exhaust pipe, a drive assembly connected between the blowing ring and the bottom of the film blowing frame, and multiple nozzles equidistantly arranged around the exhaust pipe on the upper side of the blowing ring. An annular pressurization chamber is formed between the blowing ring and the film outlet head, and the pressurization chamber is connected to each nozzle. The outer wall of each nozzle is provided with air guide holes, and several air guide holes are inclined in the same direction.

[0004] Although the prior art 1 solves the technical problem that the traditional plastic bag blown film stretching cannot improve the blown film forming quality, the cold airflow blown out by the blowing ring in the prior art 1 can cause dust in the air to easily adhere to the blown film in the molten state that has not been completely cooled when cooling the film, thus reducing the quality of the produced film. Summary of the Invention

[0005] The purpose of this invention is to provide a packaging bag forming equipment and its forming method, which can solve the problem in the prior art where dust in the air easily adheres to the blown film in the molten state before it is completely cooled by the cooling airflow when the cooling device cools the film, thus reducing the quality of the produced film.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0007] A packaging bag forming equipment includes a frame, a winding assembly and a melting device for hot-melting raw materials, and also includes a blown film device, a dust removal assembly and a film winding device. The blown film device is used to extrude plastic slurry to form an annular plastic film, and then blow the plastic film upward and move it into the film winding device.

[0008] The dust removal assembly includes a mounting frame, a cleaning assembly, and rotating rollers. Rubber rollers are rotatably mounted on the mounting frame, and the rotating rollers are symmetrically arranged at the upper and lower ends of the mounting frame. Fur belts are wound around the two rotating rollers, and the fur belts are in contact with the rubber rollers. The blown film device is equipped with a first driving device for driving the mounting frame to rotate.

[0009] The cleaning component is installed inside the mounting frame and is used to clean the side of the fur belt away from the rubber roller. The mounting frame is equipped with a second drive device for driving the rotating roller to rotate.

[0010] Preferably, the blown film device includes a base, an air ring, and a discharge die. The discharge die is mounted on the base, and the inlet of the discharge die is connected to the outlet of the melting device. An exhaust pipe is fixedly connected to the base, and the exhaust pipe is coaxially arranged with the discharge die. The air ring is rotatably mounted between the discharge die and the exhaust pipe. The air ring is provided with air holes, and an air cavity is formed between the air ring and the discharge die. The air holes are connected to the air cavity. A third driving device and a blower are mounted on the base. The third driving device is used to drive the air ring to rotate, and the blower is used to deliver air to the air cavity formed between the air ring and the discharge die.

[0011] Preferably, the cleaning assembly includes a dust collection box, an exhaust fan, and a suction port. The dust collection box is installed inside the mounting frame, and the exhaust fan is installed on the dust collection box. The suction port is located on the dust collection box and is used to clean the side of the fur belt away from the rubber roller. The mounting frame is provided with an air supply port.

[0012] Preferably, the air outlet of the blower is connected to an air inlet pipe, the blower and the air chamber are connected by the air inlet pipe, and a filter screen is installed in the air inlet pipe.

[0013] Preferably, the first driving device includes a connecting frame, a mounting plate, and a first hydraulic telescopic device. The connecting frame is fixedly connected to the base, the mounting plate is hinged to the connecting frame, the fixed end of the first hydraulic telescopic device is hinged to the connecting frame, the telescopic end of the first hydraulic telescopic device is hinged to the mounting plate, and the mounting frame is fixedly connected to the mounting plate.

[0014] Preferably, the second drive device includes a sprocket, a chain, and a second drive motor. The sprocket is fixedly sleeved on one end of the two rotating rollers extending outside the mounting frame. The chain is sleeved on the two sprockets. The second drive motor is fixedly connected to the mounting frame and is used to drive either rotating roller to rotate.

[0015] Preferably, the mounting plate is provided with a placement slot for placing the exhaust fan.

[0016] Preferably, the outer wall of the exhaust duct is connected to an air guide shroud.

[0017] Preferably, the third driving device includes a drive gear, a drive motor, and an internal gear ring disposed inside the air ring. The drive motor is connected to the discharge die head, and the drive gear is connected to the output end of the drive motor and meshes with the internal gear ring.

[0018] This invention also discloses a method for forming packaging bags, the specific forming steps of which are as follows:

[0019] Step 1: After the raw material is placed into the melting device, the melting device heats and melts the raw material to produce plastic slurry;

[0020] Step 2: The plastic slurry enters the blown film device through the feed port set on the blown film device. The blown film device extrudes the plastic slurry to form a ring-shaped plastic film, and then blows the plastic film upward and moves it into the film winding device.

[0021] Step 3: The annular plastic film moves upward under the action of the blown film device and can reach the film winding device, where it is wound up by the winding assembly.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] In this invention, there are four mounting frames, which are equally spaced on the blown film device, with an included angle of 90° between the center lines of adjacent mounting frames. The blown film device is equipped with four first driving devices corresponding to the mounting frames. The first driving devices are used to drive the four mounting frames to rotate 90° clockwise in the direction of the blown film device, so that the mounting frames are flipped from a horizontal setting to a vertical setting. A dust removal area is formed between the four mounting frames after flipping, and the blown film device is installed in the dust removal area.

[0024] Several rubber rollers are mounted on the mounting frame. After the second drive device drives the rotating rollers to rotate, the two rotating rollers drive the fur belt wrapped around the rotating rollers to move. The side of the moving fur belt close to the rubber roller rubs against the surface of the rubber roller during the movement, making the rubber roller electrified. The rubber roller rotates under the action of the friction force generated when the fur belt moves and can adsorb fine particles floating in the dust removal area. Adsorbing dust by electrified rubber rollers can not only prevent dust in the air from adhering to the blown film in the molten state before it cools down, but also, compared with the traditional method of sucking dust in the cooling area near the blown film through an air ring connected to an exhaust fan, the dust removal method of adsorbing dust by electrified rubber rollers can avoid the excessive airflow generated when directly sucking dust near the blown film, which would affect the shape and movement direction of the blown film before it cools down.

[0025] The fur belt cleans the rubber roller, which has absorbed dust, while simultaneously rubbing against it to electrify it. The dust adhering to the surface of the fur belt is moved away from the rubber roller by the second drive device and cleaned by the cleaning component. After cleaning, the fur belt is moved back to the side closer to the rubber roller by the second drive device and continues to rub and clean the rubber roller. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0027] Figure 1 is a schematic diagram of the structure of the present invention.

[0028] Figure 2 is a schematic diagram of the connection relationship between the dust removal component and the first driving device in this invention.

[0029] Figure 3 is a schematic diagram of the connection between the discharge die head and the air ring in this invention.

[0030] Figure 4 is a perspective view of the dust removal component in this invention.

[0031] Figure 5 is a perspective view of the first driving device in this invention.

[0032] The attached diagram lists the components represented by each number as follows:

[0033] 101-Frame, 102-Rewinding assembly, 103-Melt-material device, 104-Blown film device, 105-Wrap-film device, 106-Mounting frame, 107-Cleaning assembly, 108-Rotating roller, 109-Rubber roller, 110-Fur belt, 111-First drive unit, 112-Base, 113-Air ring, 114-Discharge die head, 115-Exhaust pipe, 116-Third drive unit, 1 17-Dust collection box, 118-Exhaust fan, 119-Dust suction port, 120-Main air port, 121-Connecting frame, 122-Mounting plate, 123-First hydraulic telescopic device, 124-Placement slot, 125-Air guide hood, 126-Drive gear, 127-Drive motor, 128-Internal gear ring, 129-First air guide ring, 130-Second air guide ring, 131-Extrusion port, 132-Dust removal assembly. Detailed Implementation

[0034] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the embodiments of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0035] In the description of the embodiments of the present invention, it should be understood that the terms "length", "vertical", "horizontal", "top", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing the embodiments of the present invention 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. Therefore, they should not be construed as limitations on the embodiments of the present invention.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of embodiments of the present invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0037] In this embodiment of the invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment of the invention according to the specific circumstances.

[0038] In embodiments of the present invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0039] The following disclosure provides many different implementations or examples for carrying out different structures of the embodiments of the present invention. To simplify the disclosure of the embodiments of the present invention, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the embodiments of the present invention. Furthermore, reference numerals and / or reference letters may be repeated in different examples of the embodiments of the present invention; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various implementations and / or arrangements discussed.

[0040] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0041] Example 1

[0042] Referring to Figures 1-5, this embodiment discloses a packaging bag forming equipment, specifically a dust removal device, including a frame 101, a winding assembly 102 and a melting device 103 for hot-melting raw materials, and also includes a blown film device 104, a dust removal assembly 132 and a film winding device 105. The blown film device 104 is used to extrude plastic slurry to form an annular plastic film, and then blow the plastic film upward and move it into the film winding device 105;

[0043] The dust removal assembly 132 includes a mounting frame 106, a cleaning assembly 107, and a rotating roller 108. A rubber roller 109 is rotatably mounted on the mounting frame 106. The rotating rollers 108 are symmetrically arranged at the upper and lower ends of the mounting frame 106. A fur belt 110 is wound around the two rotating rollers 108. The fur belt 110 contacts the rubber roller 109. The blown film device 104 is provided with a first driving device 111 for driving the mounting frame 106 to rotate.

[0044] The cleaning component 107 is installed inside the mounting frame 106 and is used to clean the side of the fur belt 110 away from the rubber roller 109. The mounting frame 106 is provided with a second drive device for driving the rotating roller 108 to rotate.

[0045] In this invention, the winding assembly 102 is mounted on the frame 101. The winding assembly 102, the film winding device 105, and the melting device 103 are all conventional equipment sold commercially. There are four mounting frames 106, which are equally spaced on the blown film device 104, with an included angle of 90° between the center lines of adjacent mounting frames 106. The blown film device 104 is equipped with four first driving devices 111 corresponding to the mounting frames 106. The four first driving devices 111 are used to drive the four mounting frames 106 to rotate 90° clockwise simultaneously in the direction of the blown film device 104, causing the mounting frames 106 to flip from a horizontal position. The installation is vertical; a dust removal area is formed between the four rotating mounting brackets 106, and the film blowing device 104 is installed in the dust removal area; several rubber rollers 109 are rotatably mounted on the mounting brackets 106. After the second drive device drives the rotating rollers 108 to rotate, the two rotating rollers 108 drive the fur belt 110 wrapped around the rotating rollers 108 to move. The side of the moving fur belt 110 close to the rubber rollers 109 rubs against the surface of the rubber rollers 109 during the movement, making the rubber rollers 109 electrified. The rubber rollers 109 rotate under the action of the friction force generated when the fur belt 110 moves, and can remove floating particles in the dust removal area. Fine particles are adsorbed; the adsorption of dust by the charged rubber roller 109 not only prevents dust in the air from adhering to the blown film in its undried molten state, but also, compared to the traditional dust removal method that extracts dust from the cooling area near the blown film through the air ring 113 connected to the exhaust fan 118, the dust removal method using the charged rubber roller 109 to adsorb dust avoids the excessive airflow generated when directly sucking dust near the blown film, which would affect the shape and movement direction of the undried blown film; the fur belt 110, while rubbing the rubber roller 109 to make it charged, also adsorbs dust. The dust on the rubber roller 109 is cleaned; the dust adhering to the surface of the fur belt 110 is moved away from the rubber roller 109 by the second drive device, and the dust on the fur belt 110 is cleaned by the cleaning component 107. After cleaning, the fur belt 110 is moved back to the side close to the rubber roller 109 by the second drive device and rubs and cleans the rubber roller 109. In this embodiment, the fur belt 110 is close to the rubber roller 109, and the rubber roller 109 is provided with a number of protrusions, which can increase the friction between the fur belt 110 and the rubber roller 109. The present invention can solve the problem in the prior art that when the cooling device cools the film, dust in the air is easily adhered to the blown film in the molten state that has not been completely cooled under the action of the cooling airflow, which reduces the quality of the produced film.

[0046] The blown film device 104 includes a base 112, an air ring 113, and a discharge die 114. The discharge die 114 is mounted on the base 112, and its inlet is connected to the outlet of the melting device 103. An exhaust pipe 115 is fixedly connected to the base 112 and is coaxially arranged with the discharge die 114. The air ring 113 is rotatably mounted on the discharge die 114 between the air ring 114 and the exhaust pipe 115. The air ring 113 is provided with air holes, and an air cavity is formed between the air ring 113 and the discharge die 114. The air holes are connected to the air cavity. A third drive device 116 and a blower are mounted on the base 112. The third drive device 116 is used to drive the air ring 113 to rotate, and the blower is used to deliver air to the air cavity formed between the air ring 113 and the discharge die. A first air guide ring 129 is coaxially fixedly connected to the discharge head, and a second air guide ring 130 is coaxially connected to the exhaust pipe 115. An annular extrusion port 131 is provided on the discharge film head, with a teardrop-shaped cross-section. After the molten material is extruded through the extrusion port 131, an annular plastic film can be continuously pulled upwards. Several air holes are present, each with an air nozzle installed at an angle in the same direction. A blower delivers pressurized cold air through an air inlet pipe into the air cavity formed between the air ring 113 and the discharge head. When the third drive device 116 drives the air ring 113 to rotate, the cold air entering the air cavity passes through the air guide ring 129. Air is ejected from the air vents on the air ring 113; driven by the third drive device 116, the airflow ejected through the nozzles installed on the air vents acts on the inner walls of the first air guide ring 129 and the second air guide ring 130 to form a cyclone airflow flowing from bottom to top; the cyclone airflow cools the annular plastic film while making the plastic film expand evenly until the end of the plastic film moves to the film winding device 105 and is squeezed into a strip, and then driven to be wound up by the winding assembly 102; the bottom end of the exhaust pipe 115 is connected to a pressure relief pipe, and the cold air enters the exhaust pipe 115 and is discharged to the outside through the pressure relief pipe.

[0047] Further optimization includes a cleaning component 107 comprising a dust collection box 117, an exhaust fan 118, and a suction port 119. The dust collection box 117 is installed inside the mounting frame 106, and the exhaust fan 118 is installed on the dust collection box 117. The suction port 119 is located on the dust collection box 117 and is used to clean the side of the fur belt 110 away from the rubber roller 109. The mounting frame 106 is provided with a supplementary air port 120. There are several suction ports 119. When the exhaust fan 118 is started, the suction ports 119 suck the dust accumulated on the side of the fur belt 110 away from the rubber roller 109 into the dust collection box 117 to clean the dust on the fur belt 110. When the suction ports 119 clean the dust on the fur belt 110, a negative pressure is formed in the area between the dust collection box and the rubber roller 109 under the action of the exhaust fan 118, so that the airflow in the dust collection area flows in the direction of the rubber roller 109, thereby further improving the adsorption effect of the rubber roller 109 on dust particles in the air. Since the gap between the rubber rollers 109 and the gap between the fur belt 110 and the mounting frame 106 are small, in order to ensure the normal operation of the exhaust fan 118, the mounting frame 106 is provided with an air supply port 120. A dust collection area is formed between the dust collection box 117 and the fur belt 110, and the air supply port 120 is connected to the dust collection area.

[0048] The blower's outlet is connected to an air inlet pipe, which connects the blower to the air chamber. A filter is installed in the air inlet pipe. By installing a filter in the air inlet pipe, the cooling air entering the air ring 113 can be filtered, thus preventing dust in the cooling air from adhering to the membrane tube during the cooling process of the cooling air ring 113.

[0049] Further optimization: the first drive device 111 includes a connecting frame 121, a mounting plate 122, and a first hydraulic telescopic device 123. The connecting frame 121 is fixedly connected to the base 112. The mounting plate 122 is hinged to the connecting frame 121. The fixed end of the first hydraulic telescopic device 123 is hinged to the connecting frame 121. The telescopic end of the first hydraulic telescopic device 123 is hinged to the mounting plate 122. The mounting frame is fixedly connected to the mounting plate 122. In this embodiment, there are four first driving devices 111. When the blown film device 104 starts making film, the first hydraulic telescopic device 123 extends to flip the mounting plate 122 hinged to the first hydraulic telescopic device 123. At this time, the mounting bracket 106 fixedly connected to the mounting plate 122 also flips from a horizontal setting to a vertical setting under the drive of the first hydraulic telescopic device 123. When the blown film device 104 stops producing film, the first hydraulic telescopic device 123 extends and retracts to flip the mounting bracket 106 fixedly connected to the mounting plate 122 from a vertical setting to a horizontal setting, thereby facilitating the cleaning and operation of the discharge die head 114 and the air ring 113 by the staff. In this embodiment, the mounting plate 122 is an L-shaped mounting plate 122.

[0050] The second drive device includes a sprocket, a chain, and a second drive motor. The sprocket is fixedly sleeved on one end of the two rotating rollers 108 extending outside the mounting frame 106. The chain is sleeved on the two sprockets. The second drive motor is fixedly connected to the mounting frame 106 and is used to drive either of the rotating rollers 108 to rotate. When the second motor rotates, it drives the sprocket fixedly connected to the output end of the second motor to rotate. Under the transmission of the chain, the sprocket fixedly sleeved on one end of the two rotating rollers 108 extending outside the mounting frame 106 drives the transmission roller to rotate, causing the fur belt 110 wrapped around the two transmission rollers to rotate. In this embodiment, the surfaces of the two rotating rollers 108 are provided with anti-slip textures to prevent slippage on the surface of the rotating rollers 108 on the fur belt 110.

[0051] Further optimization involves providing a placement slot 124 on the mounting plate 122 for housing the exhaust fan 118. This placement slot 124 ensures that the exhaust fan 118 can properly exhaust and dissipate heat during operation.

[0052] The exhaust duct 115 has an air guide shroud 125 connected to its outer wall. The air guide shroud 125 effectively fills the space inside the plastic bag, and the gradually increasing volume of the filled space guides the airflow to expand outward, thereby helping the plastic film to expand and stretch.

[0053] Further optimization involves a third drive device 116 comprising a drive gear 126, a drive motor 127, and an internal gear ring 128 disposed inside the air ring 113. The drive motor 127 is connected to the discharge die head 114, and the drive gear 126 is connected to the output end of the drive motor 127 and meshes with the internal gear ring 128. When the drive motor 127 starts, the drive gear 126, fixedly connected to the output end of the drive motor 127, rotates under the drive of the drive motor 127, thereby causing the internal gear ring 128 meshing with the drive gear 126 to rotate, thus causing the air ring 113 to rotate accordingly. The fixed end of the drive motor 127 is fixedly connected to the discharge die head 114.

[0054] Example 2

[0055] This invention discloses a method for forming packaging bags, the specific forming steps of which are as follows:

[0056] Step 1: After the raw material is placed into the melting device 103, the melting device 103 heats and melts the raw material to produce plastic slurry;

[0057] Step 2: The plastic slurry enters the blown film device 104 through the feed port provided on the blown film device 104. The blown film device 104 extrudes the plastic slurry to form a ring-shaped plastic film, and then blows the plastic film upward and moves it into the film winding device 105.

[0058] Step 3: The annular plastic film, moving upward under the action of the blown film device 104, can reach the film winding device 105 and be wound up under the action of the winding assembly 102.

[0059] Example 3

[0060] Referring to Figures 1-5, this embodiment is basically the same as Embodiment 1, except that in this embodiment, a second hydraulic telescopic device is installed on the connecting frame 121. The fixed end of the second hydraulic telescopic device is hinged to the connecting frame 121, and the telescopic end of the second hydraulic telescopic device is hinged to the fixed end of the first hydraulic telescopic device 123. By setting the second hydraulic telescopic device, the mounting plate 122 hinged to the connecting frame 121 can be further supported, ensuring that the mounting plate 122 can be rotated smoothly, while providing better support and fixation for the erected mounting plate 122 and the mounting frame 106 fixedly connected to the mounting plate 122.

[0061] The mounting plate 122 is provided with a clearance groove. The clearance groove is provided in correspondence with the first hydraulic device and the second hydraulic device. By providing the clearance groove, when the mounting plate 122 is placed horizontally, the bottom surface of the mounting plate 122 can contact the connecting frame 121, and the mounting plate 122 and the mounting frame 106 mounted on the mounting plate 122 will not compress the first hydraulic device and the second hydraulic device.

[0062] Further optimization involves an air supply pipe angled upwards on the air supply inlet 120, with the end of the air supply pipe furthest from the air supply inlet 120 facing the center line of the discharge die head 114. By setting up the air supply pipe, dust can be drawn from above the mounting frame 106 while simultaneously adsorbing dust in the dust collection area, reducing the amount of dust falling into the dust collection area from above the mounting frame 106 and further improving the dust collection effect.

[0063] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the invention.

[0064] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. It should be noted that any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A packaging bag forming device, comprising a frame (101), a winding assembly (102), and a melting device (103) for hot-melting raw materials, characterized in that: It also includes a blown film device (104), a dust removal assembly (132), and a film winding device (105). The blown film device (104) is used to extrude the plastic slurry to form an annular plastic film, and then blow the plastic film upward and move it into the film winding device (105). The dust removal assembly (132) includes a mounting frame (106), a cleaning assembly (107), and a rotating roller (108). A rubber roller (109) is rotatably mounted on the mounting frame (106), and the rotating roller (108) is symmetrically arranged at the upper and lower ends of the mounting frame (106). A fur belt (110) is wound around a rotating roller (108), the fur belt (110) is in contact with a rubber roller (109), and a first drive device (111) for driving the mounting frame (106) to rotate is provided on the blown film device (104); a cleaning component (107) is installed in the mounting frame (106) and the cleaning component (107) is used to clean the side of the fur belt (110) away from the rubber roller (109), and a second drive device for driving the rotating roller (108) to rotate is provided on the mounting frame (106).

2. The packaging bag forming equipment according to claim 1, characterized in that: The blown film device (104) includes a base (112), an air ring (113), and a discharge die (114). The discharge die (114) is mounted on the base (112), and the inlet of the discharge die (114) is connected to the outlet of the melting device (103). An exhaust pipe (115) is fixedly connected to the base (112), and the exhaust pipe (115) is coaxially arranged with the discharge die (114). The air ring (113) is rotatably mounted on the discharge die. Between the material die head (114) and the exhaust pipe (115); the air ring (113) is provided with air holes, and an air cavity is formed between the air ring (113) and the discharge die head (114). The air holes are connected to the air cavity. A third drive device (116) and a blower are installed on the base (112). The third drive device (116) is used to drive the air ring (113) to rotate, and the blower is used to deliver air to the air cavity formed between the air ring (113) and the discharge die head.

3. The packaging bag forming equipment according to claim 2, characterized in that: The cleaning assembly (107) includes a dust collection box (117), an exhaust fan (118), and a suction port (119). The dust collection box (117) is installed inside the mounting frame (106), and the exhaust fan (118) is installed on the dust collection box (117). The suction port (119) is located on the dust collection box (117) and is used to clean the side of the fur belt (110) away from the rubber roller (109). The mounting frame (106) is provided with a supplementary air port (120).

4. The packaging bag forming equipment according to claim 3, characterized in that: The air outlet of the blower is connected to an air inlet pipe, and the blower and the air chamber are connected by the air inlet pipe, which contains a filter screen.

5. The packaging bag forming equipment according to claim 2, characterized in that: The first drive device (111) includes a connecting frame (121), a mounting plate (122) and a first hydraulic telescopic device (123). The connecting frame (121) is fixedly connected to the base (112). The mounting plate (122) is hinged to the connecting frame (121). The fixed end of the first hydraulic telescopic device (123) is hinged to the connecting frame (121). The telescopic end of the first hydraulic telescopic device (123) is hinged to the mounting plate (122). The mounting frame is fixedly connected to the mounting plate (122).

6. A packaging bag forming device according to claim 1, characterized in that: The second drive device includes a sprocket, a chain, and a second drive motor. The sprocket is fixedly sleeved on one end of the two rotating rollers (108) extending outside the mounting frame (106). The chain is sleeved on the two sprockets. The second drive motor is fixedly connected to the mounting frame (106) and is used to drive any one of the rotating rollers (108) to rotate.

7. The packaging bag forming equipment according to claim 5, characterized in that: The mounting plate (122) is provided with a placement slot (124) for placing the exhaust fan (118).

8. The packaging bag forming equipment according to claim 2, characterized in that: The outer wall of the exhaust duct (115) is connected to an air guide hood (125).

9. The packaging bag forming equipment according to claim 2, characterized in that: The third drive device (116) includes a drive gear (126), a drive motor (127), and an internal gear ring (128) disposed inside the air ring (113). The drive motor (127) is connected to the discharge die head (114), and the drive gear (126) is connected to the output end of the drive motor (127) and the drive gear (126) meshes with the internal gear ring (128).

10. A method for forming a packaging bag, characterized in that, The process includes the following steps: using a packaging bag forming equipment according to any one of claims 1-9, the specific forming method is as follows: Step 1: After the raw material is placed into the melting device (103), the melting device (103) heats and melts the raw material to produce plastic slurry; Step 2: The plastic slurry enters the blowing device (104) through the feed port set on the blowing device (104), the blowing device (104) extrudes the plastic slurry to form a ring-shaped plastic film, and then blows the plastic film upward and moves it to the film winding device (105); Step 3: The ring-shaped plastic film moves upward under the action of the blowing device (104) and can reach the film winding device (105), and is wound up under the action of the winding assembly (102).

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