A polyethylene film blowing machine edge material recycling device

Abstract

This utility model discloses a polyethylene film blowing machine edge material recycling device, comprising: a blowing machine unit, which includes a blowing machine, with a winding roller detachably installed on the winding frame of the blowing machine; a cutting unit disposed on the winding, the cutting unit including an adjustment section and a cutting section, the cutting section being used to adjust the cutting range of the cutting section and to cut both ends of the polyethylene film roll; and an edge material recycling unit, which includes a recycling box fixedly connected to one side of the blowing machine, the recycling box being located below the cutting unit, and a crushing section for crushing the film edge material disposed inside the recycling box. This utility model utilizes the adjustment section to enable the cutting section to cut polyethylene film rolls of different widths, and the cut edge material is then crushed and recycled by the crushing section. This device integrates film edge trimming and edge material recycling into the same process, thereby improving edge material recycling efficiency and processing continuity.

Description

Technical Field

[0001] This utility model relates to the field of blown film machine technology, and in particular to a polyethylene film blown film machine edge material recycling device. Background Technology

[0002] A blown film machine is a plastic processing equipment that heats and melts plastic particles and blows them into a film. It is mainly used to produce packaging films made of materials such as PE, POF, and PVC, and is widely used in food, medicine, agriculture and other fields. Its core processes include plastic particle melt extrusion, compressed air blowing molding, cooling and shaping and traction winding, involving components such as screw extruders, dies, cooling devices and winding systems.

[0003] In the winding operation of a small-scale experimental blown film machine, due to the characteristics of polyethylene material and process limitations, burr-like protrusions often appear at both ends of the film roll after it is wound and formed by the winding roller. These irregular burrs not only damage the flatness and regularity of the film roll appearance, but also cause problems such as film edge tearing and winding jamming in subsequent use. Currently, the common method is to remove the winding roller after winding and trim it. Moreover, the trimmed edge material needs to be crushed twice before it can be recycled. This process not only increases the complexity of edge material recycling, but also prolongs the experimental cycle, making it difficult to achieve rapid recycling and resource utilization of edge material. Therefore, an edge material recycling device for polyethylene film blown film machine is proposed. Utility Model Content

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the present invention.

[0005] In view of the problems existing in the current polyethylene film blowing machine edge material recycling device, this utility model is proposed.

[0006] Therefore, the purpose of this utility model is to provide a polyethylene film blowing machine edge material recycling device, which is suitable for solving the problem that after the blowing machine has finished winding, the winding roller needs to be disassembled and the polyethylene film roll needs to be trimmed. The cut edge material needs to be crushed twice before it can be recycled. This process not only increases the complexity of edge material recycling, but also makes it difficult to quickly recycle the edge material.

[0007] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a polyethylene film blowing machine edge material recycling device, comprising:

[0008] A blown film unit, comprising a blown film machine, wherein a winding roller is detachably mounted on the winding frame of the blown film machine;

[0009] A cutting unit is provided on the winding, the cutting unit includes an adjustment part and a cutting part, the cutting part is used to adjust the cutting range of the cutting part, and the cutting part is used to cut both ends of the polyethylene film roll;

[0010] The edge material recycling unit includes a recycling box fixedly connected to one side of the blown film machine. The recycling box is located below the cutting unit and is equipped with a crushing section for crushing film edge material.

[0011] As a preferred embodiment of the polyethylene film blown film machine edge material recycling device of the present invention, the adjusting part includes a rotating rod rotatably connected to one side of the winding frame, one end of the rotating rod passing through the winding frame and fixedly connected to a positive and negative threaded rod, and a sliding rod fixed parallel to the inner wall of the winding frame.

[0012] As a preferred embodiment of the polyethylene film blowing machine edge material recycling device of the present invention, the cutting part includes two support plates slidably sleeved on the slide rod, the two support plates are symmetrically threaded onto the two opposite threads of the positive and negative thread rod, and a cutting blade is fixedly connected to the top of each of the two support plates.

[0013] As a preferred embodiment of the polyethylene film blowing machine edge material recycling device of the present invention, the two cutting blades are inclined and symmetrically distributed, and the blades of the cutting blades cut the ends of the polyethylene film roll at an inclined angle.

[0014] As a preferred embodiment of the polyethylene film blowing machine edge material recycling device of the present invention, wherein: an indicator plate is fixedly connected to one side of one of the support plates, the bottom edge of the indicator plate is a triangular pointing end, and a scale line corresponding to the indicator plate is horizontally provided on one side of the recycling box.

[0015] As a preferred embodiment of the polyethylene film blowing machine edge material recycling device of this utility model, the bottom of the recycling box is shaped like an inverted pyramid and tapers downwards, and the inner wall of the recycling box is smooth.

[0016] As a preferred embodiment of the polyethylene film blowing machine edge material recycling device of the present invention, the crushing section includes two servo motors fixedly installed on one side of the recycling box, and the output ends of the two servo motors rotate through the recycling box and are fixedly connected to crushing rollers.

[0017] As a preferred embodiment of the polyethylene film blowing machine edge material recycling device of this utility model, the inner wall of the recycling box is fixedly connected with two symmetrically distributed guide plates. The two guide plates are distributed in a V-shape above the two crushing rollers, and the gap between the lower ends of the two guide plates forms an edge material inlet channel.

[0018] The beneficial effects of this utility model are as follows: the adjustment unit enables the cutting unit to cut polyethylene film rolls of different widths, making both ends of the polyethylene film rolls smooth and flat. The cut edge material is then crushed and recycled by the crushing unit. This device integrates film edge trimming and edge material recycling into the same process to optimize the recycling steps and improve edge material recycling efficiency and processing continuity. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Among them:

[0020] Figure 1 This is a schematic diagram of the overall structure of the polyethylene film blowing machine edge material recycling device proposed in this utility model;

[0021] Figure 2 This is a schematic diagram of the cutting unit structure proposed in this utility model;

[0022] Figure 3 This is a schematic diagram showing the positional distribution of the cutting blades proposed in this utility model;

[0023] Figure 4 This is a cross-sectional schematic diagram of the internal structure of the recycling bin proposed in this utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 100. Film blowing unit; 101. Film blowing machine; 102. Winding frame; 103. Winding roller;

[0026] 200. Cutting unit; 201. Adjustment unit; 201a. Rotating rod; 201b. Threaded rod (forward and reverse); 201c. Slide rod; 202. Cutting unit; 202a. Support plate; 202b. Cutting disc; 203. Indicator plate;

[0027] 300, Edge material recycling unit; 301, Recycling box; 302, Crushing section; 302a, Servo motor; 302b, Crushing roller; 303, Guide plate. Detailed Implementation

[0028] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0029] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0030] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single embodiment or an embodiment selectively excluded from other embodiments.

[0031] Secondly, this utility model is described in detail with reference to the schematic diagrams. When describing the embodiments of this utility model, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not adhering to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of this utility model. In addition, actual manufacturing should include the three-dimensional spatial dimensions of length, width, and depth.

[0032] Example 1

[0033] Reference Figures 1-4 The first embodiment of this utility model provides a polyethylene film blowing machine edge material recycling device, which integrates film edge trimming and edge material recycling into the same process to optimize the recycling steps and improve edge material recycling efficiency and processing continuity. It includes: a blowing unit 100, a cutting unit 200 and an edge material recycling unit 300.

[0034] The blown film unit 100 includes a blown film machine 101, and a winding roller 103 is detachably installed at the winding frame 102 of the blown film machine 101.

[0035] A cutting unit 200 is provided on the winding. The cutting unit 200 includes an adjustment part 201 and a cutting part 202. The cutting part 202 is used to adjust the cutting range of the cutting part 202 and to cut both ends of the polyethylene film roll.

[0036] The edge material recycling unit 300 includes a recycling box 301 fixedly connected to one side of the blown film machine 101. The recycling box 301 is located below the cutting unit 200, and a crushing part 302 for crushing film edge material is provided inside the recycling box 301.

[0037] The blown film machine 101 is an industrial device that processes plastic particles into cylindrical films through an extrusion blow molding process. The blown film machine 101 is a general standard part or a component known to those skilled in the art. Its structure and principle can be learned by those skilled in the art through technical manuals. The blown film machine 101 processes polyethylene raw materials into films. The winding roller 103 is detachably installed on the winding frame 102 for winding the film. After the film is formed on the winding roller 103, the position of the cutting section 202 is adjusted by the adjustment section 201 of the cutting unit 200 to adapt to film rolls of different widths. The cutting section 202 then cuts both ends of the rotating film roll to remove edge burrs. The edge material generated by cutting falls into the recycling box 301 below under the action of gravity. The crushing section 302 of the edge material recycling unit 300 crushes the edge material to realize the recycling of the edge material. Thus, the integrated operation of film edge trimming and edge material recycling is realized.

[0038] Example 2

[0039] Reference Figures 1-3 This is the second embodiment of the present invention. Unlike the previous embodiment, the adjustment part 201 includes a rotating rod 201a rotatably connected to one side of the winding frame 102. One end of the rotating rod 201a passes through the winding frame 102 and is fixedly connected to a positive and negative thread rod 201b. A sliding rod 201c is fixed parallel to the inner wall of the winding frame 102.

[0040] When the rotating rod 201a rotates, it drives the positive and negative threaded rods 201b that pass through the winding frame 102 to rotate synchronously. Since the two threads of the positive and negative threaded rods 201b rotate in opposite directions, and the slide rod 201c on the inner wall of the winding frame 102 provides a lateral sliding guide for the cutting part 202, when the positive and negative threaded rods 201b rotate, they will drive the cutting part 202 to move towards or away from each other along the slide rod 201c, thereby precisely adjusting the lateral spacing of the cutting part 202 to adapt to polyethylene film rolls of different widths.

[0041] In addition, the cutting part 202 includes two support plates 202a that are slidably sleeved on the slide rod 201c. The two support plates 202a are symmetrically threaded onto two opposite threads of the positive and negative threaded rod 201b. The top of each of the two support plates 202a is fixedly connected to a cutting disc 202b.

[0042] Two support plates 202a are threadedly connected to the opposite threaded sections of the positive and negative threaded rods 201b and can slide along the slide bar 201c. When the positive and negative threaded rods 201b are driven to rotate by the rotating rod 201a, the two support plates 202a move synchronously, causing the top-fixed cutting blades 202b to move closer to or away from the two ends of the film roll. During the cutting process, the two cutting blades 202b contact the two ends of the film roll respectively and rotate synchronously around the winding roller 103, so that the cutting blades 202b cut the burrs and protrusions at both ends of the film roll to complete the edge trimming process.

[0043] Among them, the two cutting blades 202b are tilted and symmetrically distributed, and the blades of the cutting blades 202b cut the ends of the polyethylene film roll at an inclined angle.

[0044] The cutting blade 202b is symmetrically set at an angle. When cutting the end of the polyethylene film roll, the angled blade can reduce cutting resistance and reduce the risk of film tearing compared to vertical cutting. At the same time, it makes the cut surface smoother. The angled cutting method can also guide the edge material generated by cutting to fall at a specific angle (adapted to the recycling bin 301) so that it can fall smoothly into the recycling bin 301 below.

[0045] In addition, one side of one of the support plates 202a is fixedly connected to an indicator plate 203. The bottom edge of the indicator plate 203 is a triangular pointing end, and a scale line corresponding to the indicator plate 203 is horizontally provided on one side of the recycling bin 301.

[0046] The triangular pointing end of the indicator plate 203 corresponds to the scale line on the side wall of the recycling bin 301. When the adjustment part 201 changes the spacing of the cutting part 202, the indicator plate 203 moves accordingly. The operator can intuitively read and accurately control the distance between the two cutting blades 202b by the position of the indicator plate 203 on the scale line, thereby ensuring that the cutting width of different batches of film rolls is consistent and improving the cutting accuracy and standardization.

[0047] Example 3

[0048] Reference Figure 1 and Figure 4 This is the third embodiment of the present invention. Unlike the previous embodiment, the bottom of the recycling box 301 is an inverted pyramid shape that tapers downwards. The inverted pyramid shape causes the crushed edge material to automatically gather towards the center, so as to facilitate the discharge of edge material and recycling. The inner wall of the recycling box 301 is smooth.

[0049] When the film scraps produced by cutting fall into the recycling bin 301, the smooth inner wall reduces the frictional resistance between the scraps and the bin, preventing material accumulation or residue, and ensuring that the scraps quickly slide into the working area of ​​the crushing section 302.

[0050] In addition, the crushing unit 302 includes two servo motors 302a fixedly installed on one side of the recycling bin 301. The output ends of the two servo motors 302a rotate through the recycling bin 301 and are fixedly connected to the crushing rollers 302b.

[0051] The crushing section 302 drives the crushing rollers 302b through dual servo motors 302a to crush the edge material. The two servo motors 302a control the crushing rollers 302b to rotate in opposite directions, forming a combined force of shearing and extrusion. When the edge material slides from the bottom of the recycling box 301 between the two crushing rollers 302b, the rotating roller surfaces use friction to pull the edge material into the crushing gap, where it is crushed by the blade structure.

[0052] The inner wall of the recycling bin 301 is fixedly connected to two symmetrically distributed guide plates 303. The two guide plates 303 are distributed in a V-shape above the two crushing rollers 302b, and the gap between the lower ends of the two guide plates 303 forms a material feeding channel.

[0053] The V-shaped openings of the two guide plates 303 are directly opposite the gap between the two crushing rollers 302b. When the edge material slides down along the guide plate 303, it will be guided to the center position of the two crushing rollers 302b, avoiding uneven crushing or jamming of the edge material due to the offset of the landing point, ensuring that the edge material is stably introduced and effectively crushed, and improving the reliability of the crushing process.

[0054] During use, the blown film machine 101 processes polyethylene raw materials into tubular films. As the films are produced, they are wound into rolls on the winding roller 103. After the film rolls are formed, the operator rotates the rotating rod 201a of the adjustment unit 201, which drives the positive and negative threaded rods 201b to rotate. Using the guiding effect of the two reverse threads and the slide rod 201c, the two support plates 202a of the cutting unit 202 are driven to move closer synchronously. During adjustment, the position of the indicator plate 203 on the scale line of the recycling box 301 provides intuitive feedback on the cutting width, ensuring adjustment accuracy. Subsequently, the symmetrically distributed cutting blades 202b cut into both ends of the film roll with less resistance during the rotation of the winding roller 103, removing burrs and protrusions. At the same time, the edge material is guided to fall into the recycling box 301 below at a specific angle. After cutting is completed, the rotating rod 201a is rotated in the opposite direction to make the two cutting blades 202b move away from each other.

[0055] The scrap material generated during cutting falls into the recycling bin 301 under the action of gravity. Two V-shaped guide plates 303 precisely guide the scrap material into the gap between the two crushing rollers 302b. The crushing rollers 302b, driven by dual servo motors 302a, crush the scrap material into granules through the shearing and extrusion force generated by their opposite rotation, thus completing the crushing and recycling of the scrap material. The crushed scrap material is discharged from the bottom of the recycling bin 301 to complete the recycling process.

[0056] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A device for recycling edge material from a polyethylene film blowing machine, characterized in that, include: A blown film unit (100) includes a blown film machine (101) on which a winding roller (103) is detachably mounted; A cutting unit (200) is provided on the winding. The cutting unit (200) includes an adjustment part (201) and a cutting part (202). The cutting part (202) is used to adjust the cutting range of the cutting part (202) and to cut both ends of the polyethylene film roll. The edge material recycling unit (300) includes a recycling box (301) fixedly connected to one side of the blown film machine (101), the recycling box (301) being located below the cutting unit (200), and the recycling box (301) being provided with a crushing part (302) for crushing film edge material.

2. The polyethylene film blown film machine off- gauge recycling apparatus of claim 1, wherein: The adjustment unit (201) includes a rotating rod (201a) rotatably connected to one side of the winding frame (102). One end of the rotating rod (201a) passes through the winding frame (102) and is fixedly connected to a positive and negative thread rod (201b). A sliding rod (201c) is fixed parallel to the inner wall of the winding frame (102).

3. The polyethylene film blown film machine off- gauge recovery apparatus of claim 2, wherein: The cutting part (202) includes two support plates (202a) that are slidably sleeved on the slide rod (201c). The two support plates (202a) are symmetrically threaded onto two opposite threads of the positive and negative threaded rod (201b). A cutting blade (202b) is fixedly connected to the top of each of the two support plates (202a).

4. The polyethylene film blown film machine off- gauge recycling apparatus of claim 3, wherein: The two cutting blades (202b) are inclined and symmetrically distributed, and the cutting blades (202b) cut the ends of the polyethylene film roll at an inclined angle.

5. The polyethylene film blowing machine edge material recycling device according to claim 3, characterized in that: One of the support plates (202a) is fixedly connected to an indicator plate (203) on one side. The bottom edge of the indicator plate (203) is a triangular pointing end. The recycling bin (301) has a horizontal scale line corresponding to the indicator plate (203) on one side.

6. The polyethylene film blown film machine off- gauge recycling apparatus of claim 5, wherein: The bottom of the recycling bin (301) is an inverted pyramid shape that tapers downwards, and the inner wall of the recycling bin (301) is smooth.

7. The polyethylene film blown film machine off- gauge recovery apparatus of claim 6, wherein: The crushing section (302) includes two servo motors (302a) fixedly installed on one side of the recycling bin (301). The output ends of the two servo motors (302a) rotate through the recycling bin (301) and are fixedly connected to a crushing roller (302b).

8. The polyethylene film blown film machine off- lay recovery apparatus of claim 7, wherein: The inner wall of the recycling bin (301) is fixedly connected to two symmetrically distributed guide plates (303). The two guide plates (303) are arranged in a V-shape above the two crushing rollers (302b), and the gap between the lower ends of the two guide plates (303) forms an edge material inlet channel.

Images