Polyethylene film bag production raw material extrusion device

Abstract

This utility model relates to the field of polyethylene production technology, specifically to an extrusion device for raw materials in polyethylene film bag production. It includes a cylindrical component, a feed frame fixedly installed at the upper end of the cylindrical component, and a discharge pipe fixedly installed at the discharge position of the cylindrical component. It also includes a movable component movably connected to one side of the cylindrical component, the outer end of which extends through the cylindrical component and is fixedly mounted with a fixing plate. Furthermore, it includes a rotating shaft rotatably connected inside the cylindrical component, with a heating ring fixedly installed at the inner end of the shaft. Finally, it includes a conveying roller fixedly installed at the end of the heating ring. Through the movable component and the frustum-shaped heating ring mounted on the rotating shaft, stable heating of the granular raw material can be achieved, improving the hot-melt efficiency. Moreover, the connection between the cavity and the connecting hole allows for dust removal of the raw material during feeding.

Description

Technical Field

[0001] This utility model relates to the field of polyethylene production, and in particular to an extrusion device for raw materials in polyethylene film bag production. Background Technology

[0002] Polyethylene is a thermoplastic resin obtained by polymerizing ethylene monomers. It is used in many fields, especially in the field of packaging bags. In the actual production process, polyethylene granules are first heated and then the molten polyethylene is extruded into the mold cavity to prepare the packaging bag.

[0003] Existing polyethylene film bag extrusion devices heat the raw material granules only through heating wires located inside the heating tube when hot-melting granular polyethylene. Due to uneven heating of the plastic granules, the hot-melting efficiency of the plastic granules is low. In view of this, we propose a raw material extrusion device for polyethylene film bag production. Summary of the Invention

[0004] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a polyethylene film bag production raw material extrusion device, which can effectively solve the problem that the existing polyethylene film bag extrusion device only heats the raw material particles by heating wires set inside the heating tube when hot melting granular polyethylene. Due to the uneven heating of the plastic particles, the hot melting efficiency of the plastic particles is low.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A polyethylene film bag production raw material extrusion device includes a cylindrical component and a feed frame fixedly installed at the upper end of the cylindrical component, and a discharge pipe fixedly installed at the discharge position of the cylindrical component.

[0007] It also includes a movable component movably connected to one side of the cylinder, the outer end of which extends through the cylinder and is fixedly mounted on a fixed plate on the outside; it also includes a rotating shaft rotatably connected inside the cylinder, the rotating shaft extending to a position inside the cylinder where a heating ring is fixedly mounted; and it also includes a conveying roller fixedly mounted at the end of the heating ring.

[0008] Preferably, the device further includes a through hole located in the middle of the fixed plate, the inner wall of the through hole being rotatably connected to the outer wall of the rotating shaft, and the fixed plate being fixedly connected to the output end of the external hydraulic cylinder, with the outer wall of the fixed plate slidingly engaging with a limiting groove on the outer wall of the cylinder.

[0009] Preferably, the heating ring is frustum-shaped with an inclined surface on its outer wall, and the heating ring is located below the feed frame. The heating ring is electrically connected to an external power source for hot melting of granular raw materials, and heating wires are also provided on the inner wall of the cylinder.

[0010] Preferably, the movable component is annular, and the outer wall of the movable component slides in conjunction with the outer wall of the heating ring. A cavity is provided between the middle of the movable component and the heating ring, and a connecting hole is provided on the outer wall of the movable component, the position of which corresponds to the position of the feed frame.

[0011] Preferably, the cavity is kept in communication with the external gas through a connecting pipe fixedly installed on the outer wall of the cylinder, and a one-way valve is provided on the connecting pipe.

[0012] Preferably, a hot-melt cavity is provided inside the cylinder, and an overlapping plate is fixedly installed on the inner wall of the hot-melt cavity. The overlapping plate is rotatably connected to the conveying roller, and a notch is provided on the overlapping plate.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] This invention, through the combination of a movable component and a frustum-shaped heating ring mounted on a rotating shaft, enables stable heating of granular raw materials, improves hot-melting efficiency, and, with the connection between the cavity and the connecting hole, allows for dust removal of the raw materials during feeding. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a schematic diagram of the overall structure of the extrusion device of the present invention;

[0017] Figure 2 This is a schematic diagram of the overall exploded structure of the extrusion device of the present invention;

[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of the cylindrical component of the present invention;

[0019] Figure 4 For the present invention Figure 3 Enlarged structural diagram at point A in the middle.

[0020] Drawing number explanation:

[0021] 100. Cylindrical component; 101. Hot melt cavity; 102. Limiting groove; 110. Discharge pipe; 120. Feed frame; 130. Connecting pipe;

[0022] 200. Moving part; 201. Connecting hole; 202. Cavity; 210. Fixing plate; 211. Through hole;

[0023] 300, rotating shaft; 310, heating ring; 311, inclined surface; 320, conveyor roller; 330, overlapping plate. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings.

[0025] The following description is intended to disclose the invention so that those skilled in the art can implement it. The preferred embodiments described below are merely examples, and other obvious modifications will be apparent to those skilled in the art. The basic principles of the invention defined in the following description can be used in other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.

[0026] Those skilled in the art should understand that, in the disclosure of this invention, the terms "longitudinal," "lateral," "upper," "lower," "left," "right," "front," "rear," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or position based on the orientation or positional relationship shown in the accompanying drawings. They are merely simplified descriptions for the convenience of describing this invention and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this invention.

[0027] It is understood that the term "a" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element can be one, while in another embodiment, the number of the element can be multiple, and the term "a" should not be understood as a limitation on the number. Example

[0028] See attached document Figure 1-4As shown, a polyethylene film bag production raw material extrusion device includes a cylindrical component 100 and a feed frame 120 fixedly installed at the upper end of the cylindrical component 100. It also includes a discharge pipe 110 fixedly installed at the discharge position of the cylindrical component 100. It also includes a movable component 200 movably connected to one side of the cylindrical component 100. The outer end of the movable component 200 extends through the cylindrical component 100 and is fixedly installed with a fixing plate 210. It also includes a rotating shaft 300 rotatably connected inside the cylindrical component 100. The rotating shaft 300 extends to the inside of the cylindrical component 100 and is fixedly installed with a heating ring 310. It also includes a conveying roller 320 fixedly installed at the end of the heating ring 310. Specifically, in this application, the feed frame 120 located on the upper side of the cylinder 100 can pour granular raw materials from the feed frame 120 into the interior of the cylinder 100. Combined with the heating ring 310 located on the lower side of the feed frame 120, the granular plastic can be melted. Furthermore, the conveying roller 320 located inside the cylinder 100 can further convey the plastic in the melted state.

[0029] It should be noted that, in this application, in order to ensure rapid melting of granular plastic, the heating ring 310 is frustum-shaped with an inclined surface 311 on its outer wall. The heating ring 310 is located below the feed frame 120 and is electrically connected to an external power source for melting granular raw materials. Heating wires are also provided on the inner wall of the cylinder 100. Correspondingly, in the actual melting process, when the granular raw material is poured down from the feed frame 120, the heating ring 310 is used to quickly melt the plastic granules. Furthermore, as the rotating shaft 300 rotates, the heating ring 310 also rotates synchronously. While ensuring the normal conveying of plastic, the heating ring 310 can achieve rapid melting of the granules.

[0030] Furthermore, in order to ensure the normal delivery of raw materials, in this application, a movable member 200 is first connected to the outer wall of the cylinder 100. When the movable member 200 moves in the direction of raw material delivery, the raw material particles located at the lower side of the feed frame 120 will be driven by the movable member 200 to move towards the conveying roller 320. The raw material will be delivered to the position of the conveying roller 320 along the inclined surface 311 set on the outer wall of the heating ring 310. Subsequently, the raw material will be continuously delivered through the conveying roller 320.

[0031] Specifically, this application also includes a through hole 211 located in the middle of the fixed plate 210. The inner wall of the through hole 211 is rotatably connected to the outer wall of the rotating shaft 300, and the fixed plate 210 is fixedly connected to the output end of the external hydraulic cylinder. The outer wall of the fixed plate 210 is slidably engaged with the limiting groove 102 on the outer wall of the cylindrical component 100. To ensure the fixation of the moving trajectory of the fixed plate 210, the rotational engagement between the through hole 211 and the rotating shaft 300, combined with the sliding engagement between the fixed plate 210 and the limiting groove 102, ensures the fixation of the moving trajectory of the fixed plate 210.

[0032] To reduce the impact of dust adhering to the outer wall of the granular plastic on the quality of subsequent injection molded parts, in this application, the movable part 200 is annular, and its outer wall slides in conjunction with the outer wall of the heating ring 310. A cavity 202 is provided between the movable part 200 and the heating ring 310, and a connecting hole 201 is provided on the outer wall of the movable part 200, the position of which corresponds to the position of the feed frame 120. The cavity 202 is kept in communication with external gas through a connecting pipe 130 fixedly installed on the outer wall of the cylinder 100, and a one-way valve is provided on the connecting pipe 130. Furthermore, in this application, when the moving part 200 moves along the axial direction of the cylinder 100, the cavity 202 between the moving part 200 and the heating ring 310 is compressed, and the gas in the cavity 202 is blown vertically upward toward the feed frame 120 through the connecting hole 201, thereby effectively cleaning the dust adhering to the raw material particles. During this process, new plastic particles will fall onto the outer wall of the moving part 200, while the plastic particles that were originally on the outer wall of the heating ring 310 will be pushed toward the inclined surface 311 of the heating ring 310 for subsequent efficient melting.

[0033] Furthermore, when the moving part 200 is reset, the corresponding one-way valve set on the connecting pipe 130 is in the open state, and the external gas can re-enter the interior of the cavity 202 to repeat the above process, thereby achieving efficient addition and hot melting of raw materials.

[0034] Specifically, in this application, to ensure the normal rotation of the conveying roller 320, a hot melt chamber 101 is provided inside the cylinder 100. An overlapping plate 330 is fixedly installed on the inner wall of the hot melt chamber 101. The overlapping plate 330 is rotatably connected to the conveying roller 320, and a notch is provided on the overlapping plate 330. Correspondingly, the rotatable connection between the overlapping plate 330 and the conveying roller 320 ensures the stable rotation of the conveying roller 320. Furthermore, the notch on the overlapping plate 330 allows the molten plastic in the hot melt chamber 101 to pass through the notch and enter the discharge pipe 110, facilitating subsequent extrusion.

[0035] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are merely examples and do not limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functions and structural principles of the present invention have been shown and explained in the embodiments, and any modifications or variations of the embodiments of the present invention may be made without departing from the stated principles.

Claims

1. A polyethylene film bag production raw material extrusion device, characterized in that, include: The cylindrical component (100) and the feed frame (120) fixedly installed at the upper end of the cylindrical component (100) also include a discharge pipe (110) fixedly installed at the discharge position of the cylindrical component (100). It also includes a movable part (200) movably connected to one side of the cylinder (100), the outer end of the movable part (200) extending through the cylinder (100) and fixedly mounted on the outside with a fixed plate (210), a rotating shaft (300) rotatably connected inside the cylinder (100), the rotating shaft (300) extending to a position inside the cylinder (100) and fixedly mounted with a heating ring (310), and a conveying roller (320) fixedly mounted at the end of the heating ring (310).

2. The polyethylene film bag production raw material extrusion device according to claim 1, characterized in that: It also includes a through hole (211) opened in the middle of the fixed plate (210), the inner wall of the through hole (211) is rotatably connected to the outer wall of the rotating shaft (300), and the fixed plate (210) is fixedly connected to the output end of the external hydraulic cylinder, and the outer wall of the fixed plate (210) is slidably engaged with the limiting groove (102) opened on the outer wall of the cylinder (100).

3. The polyethylene film bag production raw material extrusion device according to claim 2, characterized in that: The heating ring (310) is frustum-shaped, with an inclined surface (311) on its outer wall. The heating ring (310) is located below the feed frame (120) and is electrically connected to an external power source for hot melting of granular raw materials. Heating wires are also provided on the inner wall of the cylinder (100).

4. The polyethylene film bag production raw material extrusion device according to claim 3, characterized in that: The movable part (200) is annular, and the outer wall of the movable part (200) slides with the outer wall of the heating ring (310). A cavity (202) is provided between the middle of the movable part (200) and the heating ring (310), and a connecting hole (201) is provided on the outer wall of the movable part (200). The position of the connecting hole (201) corresponds to the position of the feed frame (120).

5. The polyethylene film bag production raw material extrusion device according to claim 4, characterized in that: The cavity (202) is connected to the external gas through a connecting pipe (130) fixedly installed on the outer wall of the cylinder (100), and a one-way valve is provided on the connecting pipe (130).

6. The polyethylene film bag production raw material extrusion device according to claim 5, characterized in that: A hot melt cavity (101) is provided inside the cylinder (100). An overlapping plate (330) is fixedly installed on the inner wall of the hot melt cavity (101). The overlapping plate (330) is rotatably connected to the conveying roller (320), and a notch is provided on the overlapping plate (330).

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