Film on-line edge-recovery recycling device

Abstract

The utility model discloses a film on -line edge recovery and utilization device, include: melt jar, protective frame is fixedly arranged at the top of melt jar, rotating component, including rotating and inserting on the pivot of protective frame, the bottom extension of pivot is in the melt jar, and the surface of pivot and located in the fixed sleeve of protective frame has the winding drum, the utility model discloses adopt annular cutting mode, and the edge angle material is wound to the cutting of setting thickness in time, and long strip waste material is converted into short fragment, realizes immediate fragmentation processing, effectively prevents the winding, jam etc. of waste material in the problem of comminution processing, and the fragment directly falls into the melt jar after cutting, and the specific surface area of fragmentary edge material is big, and the even heating, and the melting time is shortened, and the melting efficiency is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of thin film processing technology, and in particular to a device for online edge-recycling and recycling of thin films. Background Technology

[0002] During the blowing or casting process of plastic film, scrap material is generated. In existing technology, the waste scrap material is usually first wound up and recycled using a simple winding device, stored, and then transferred to a crushing device for crushing. The crushed particles are then sent to a melt regeneration system. However, because the scrap material is long and thin, it is easy to get tangled on the feed roller, blade shaft, and other parts of the crusher during crushing, which can lead to equipment failure or even shutdown. Therefore, an online scrap recycling device for film is needed to solve this problem. Utility Model Content

[0003] This utility model addresses the shortcomings of existing technologies by providing the following technical solution:

[0004] A film online edge-recycling and reuse device includes:

[0005] Melting tank;

[0006] A protective frame is fixedly installed on the top of the melting tank;

[0007] The rotating assembly includes a rotating shaft that is rotatably inserted into the protective frame, the bottom of the rotating shaft extending into the melting tank, and a take-up drum fixedly sleeved on the surface of the rotating shaft within the protective frame.

[0008] The cutting assembly includes a water storage ring fixedly disposed on the inner wall of the protective frame, multiple sets of integrally formed extension tubes disposed on the water storage ring, and a piston rod movably inserted into the end of the extension tube. A cutting blade is fixedly disposed at the end of the piston rod away from the extension tube, and a spring is wound around the surface of the piston rod inside the extension tube.

[0009] In this process, a liquid medium is introduced into the water storage ring. When the pressure of the liquid medium is greater than the elastic force of the spring, the liquid medium pushes the piston rod to move, causing the cutting blade to move closer to the take-up drum, so as to cut the edge film wrapped on the surface of the take-up drum, and the cut edge film falls into the melting tank for recycling.

[0010] As an improvement to the above technical solution, a connecting sleeve is rotatably inserted into the top of the rotating shaft. The connecting sleeve communicates with the internal cavity of the rotating shaft. A one-way flow connecting pipe is provided between the connecting sleeve and the water storage ring. A water inlet pipe is fixedly inserted into the connecting sleeve. The bottom of the water inlet pipe extends into the rotating shaft. A solenoid valve is installed at the connection point between the extension pipe and the water storage ring.

[0011] As an improvement to the above technical solution, a water outlet pipe is connected to the bottom of the water storage ring, and a second solenoid valve is installed inside the water outlet pipe.

[0012] As an improvement to the above technical solution, multiple sets of stirring shafts are fixedly connected to the surface of the rotating shaft.

[0013] As an improvement to the above technical solution, a motor is also provided on the top of the protective frame, and a transmission belt is connected between the motor and the rotating shaft.

[0014] The beneficial effects of this utility model are:

[0015] The waste generated during film production is collected in real time by winding the film onto a rewinding drum. Once the specified thickness is reached, the material is automatically cut and falls into a melting tank for heating and melting. The molten plastic material can then be further extruded into granules or remolded, achieving a closed-loop recycling process from "production → edge trimming → cutting → melting → regranulation / molding". This significantly improves material utilization and reduces raw material waste.

[0016] Using a ring-shaped cutting method, the scrap material is cut off immediately when it is wound to a set thickness, transforming long strips of waste into short fragments. This achieves immediate fragmentation and effectively prevents problems such as entanglement and blockage of waste material during crushing and processing. After cutting, the fragments fall directly into the melting tank. The fragmented scrap has a large specific surface area, is heated evenly, and has a shorter melting time, effectively improving melting efficiency. Attached Figure Description

[0017] Figure 1 This is a front view of the overall structure of this utility model;

[0018] Figure 2 This is a schematic diagram of the cutting component of this utility model;

[0019] Figure 3 This utility model Figure 1 Enlarged structural diagram at point A in the middle.

[0020] Reference numerals: 10, melting tank; 20, protective frame; 30, cutting assembly; 301, water storage ring; 302, extension tube; 303, cutting blade; 304, piston rod; 305, spring; 40, rotating shaft; 41, water inlet pipe; 42, stirring shaft; 43, winding drum; 44, connecting pipe; 45, connecting sleeve. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0022] A film online edge-recycling and reuse device includes:

[0023] Melting tank 10;

[0024] The protective frame 20 is fixedly installed on the top of the melting tank 10;

[0025] The rotating assembly includes a rotating shaft 40 that is rotatably inserted into the protective frame 20. The bottom of the rotating shaft 40 extends into the melting tank 10, and a winding drum 43 is fixedly sleeved on the surface of the rotating shaft 40 and located inside the protective frame 20.

[0026] The cutting assembly 30 includes a water storage ring 301 fixedly disposed on the inner wall of the protective frame 20, multiple sets of integrally formed extension tubes 302 disposed on the water storage ring 301, and a piston rod 304 movably inserted into the end of the extension tube 302. A cutting blade 303 is fixedly disposed at one end of the piston rod 304 away from the extension tube 302, and a spring 305 is wound on the surface of the piston rod 304 and inside the extension tube 302.

[0027] Liquid medium is introduced into the water storage ring 301. When the pressure of the liquid medium is greater than the elastic force of the spring 305, the liquid medium pushes the piston rod 304 to move, which in turn moves the cutting blade 303 toward the winding drum 43 to cut the edge film wrapped on the surface of the winding drum 43, so that the cut edge film falls into the melting tank 10 for recycling.

[0028] Specifically, an external force drives the rotating shaft 40 to rotate, causing the take-up drum 43 to rotate synchronously. The surface of the take-up drum 43 is wound with the edge-removing film (waste) generated during the production process. As the rotating shaft 40 rotates, it continuously collects the waste, forming a film roll of a certain thickness. When the desired thickness is reached and cutting is required, a liquid medium is introduced into the water storage ring 301. The liquid pressure acts on the bottom of the piston rod 304. If the liquid pressure exceeds the elastic force of the spring 305, the piston rod 304 overcomes the resistance of the spring 305 and moves towards the take-up drum 43, causing the cutting blade 303 to approach the surface of the take-up drum 43. The cutting blade 303 cuts the wound film, and the cut waste is removed. The film falls into the melting tank 10 below by gravity, and is melted into a liquid state by heating. The molten material can be further extruded and molded for the production of new films or other plastic products, realizing recycling. After the film scraps are cut, they do not need to be collected or transported manually and fall directly into the melting tank below. This realizes a closed-loop process from "production → edge collection → cutting → melting → re-granulation / molding", which significantly improves the material utilization rate. At the same time, since the scraps are immediately cut into rings when they are wrapped to a set thickness, the continuous long strips of scraps are transformed into independent short segments. This instant fragmentation process avoids the film entanglement problem during traditional crushing and realizes a entanglement-free operation throughout the entire process.

[0029] In one embodiment, a connecting sleeve 45 is rotatably inserted into the top of the rotating shaft 40. The connecting sleeve 45 communicates with the internal cavity of the rotating shaft 40. A one-way flow connecting pipe 44 is provided between the connecting sleeve 45 and the water storage ring 301. A water inlet pipe 41 is fixedly inserted into the connecting sleeve 45. The bottom of the water inlet pipe 41 extends into the rotating shaft 40. A solenoid valve is installed at the connection point between the extension pipe 302 and the water storage ring 301. External high-temperature liquid is injected into the cavity of the rotating shaft 40 through the water inlet pipe 41. As the amount of liquid increases, the high-temperature liquid can enter the connecting sleeve 40. In the set 45, the liquid then flows into the water storage ring 301 through the one-way valve of the connecting pipe 44. The solenoid valve is initially closed, and the liquid gradually accumulates in the water storage ring, increasing the pressure. When the film needs to be cut, the solenoid valve is opened, and the high-pressure liquid enters the extension pipe 302 through the solenoid valve, pushing the piston rod 304 to move the cutting blade 303 toward the winding drum 43 to complete the cutting. The introduction of high-temperature liquid as a power source and heat energy medium not only realizes the cutting control of film edge material, but may also provide a preheating function for the waste recycling in the melting tank 10, thereby improving the overall system efficiency and energy saving.

[0030] In one embodiment, a water outlet pipe is connected to the bottom of the water storage ring 301, and a second solenoid valve is installed in the water outlet pipe. When the cutting is completed, the first solenoid valve closes and the second solenoid valve opens, allowing the high-temperature liquid in the water storage ring 301 to flow out. The internal pressure of the water storage ring 301 decreases, and the spring 305 pushes the piston rod 304 back to its original position. The piston rod 304 drives the cutting blade to retract 303, waiting for the next instruction.

[0031] In one embodiment, multiple sets of stirring shafts 42 are fixedly connected to the surface of the rotating shaft 40. When the external force drives the rotating shaft 40 to rotate, the winding drum 43 rotates accordingly to complete the collection of film scraps. At the same time, the stirring shafts 42 also rotate synchronously and penetrate into the melting tank 10 to stir the plastic waste that is being heated and melted.

[0032] In one embodiment, a motor is also included on the top of the protective frame 20. The motor is connected to the rotating shaft 40 by a transmission belt. When the motor is started, the motor drives the rotating shaft 40 to rotate via the transmission belt.

[0033] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it.

Claims

1. A film online edge-collecting and recycling device, characterized in that, include: Melting tank (10); A protective frame (20) is fixedly installed on the top of the melting tank (10); The rotating assembly includes a rotating shaft (40) rotatably inserted into the protective frame (20), the bottom of the rotating shaft (40) extending into the melting tank (10), and a winding drum (43) fixedly sleeved on the surface of the rotating shaft (40) and located inside the protective frame (20); The cutting assembly (30) includes a water storage ring (301) fixedly disposed on the inner wall of the protective frame (20), multiple sets of integrally formed extension tubes (302) disposed on the water storage ring (301), and a piston rod (304) movably inserted into the end of the extension tube (302). A cutting blade (303) is fixedly disposed at one end of the piston rod (304) away from the extension tube (302), and a spring (305) is wound on the surface of the piston rod (304) and inside the extension tube (302). Liquid medium is introduced into the water storage ring (301). When the pressure of the liquid medium is greater than the elastic force of the spring (305), the liquid medium pushes the piston rod (304) to move, causing the cutting blade (303) to move closer to the winding drum (43) to cut the edge film wrapped on the surface of the winding drum (43), so that the cut edge film falls into the melting tank (10) for recycling.

2. The online film edge-recycling device according to claim 1, characterized in that: A connecting sleeve (45) is rotatably inserted into the top of the rotating shaft (40). The connecting sleeve (45) communicates with the internal cavity of the rotating shaft (40). A one-way flow connecting pipe (44) is provided between the connecting sleeve (45) and the water storage ring (301). A water inlet pipe (41) is fixedly inserted into the connecting sleeve (45). The bottom of the water inlet pipe (41) extends into the rotating shaft (40). A solenoid valve is installed at the connection between the extension pipe (302) and the water storage ring (301).

3. The online film edge-recycling device according to claim 2, characterized in that: The bottom of the water storage ring (301) is connected to a water outlet pipe, and a solenoid valve is installed inside the water outlet pipe.

4. The online film edge-recycling device according to claim 1, characterized in that: Multiple sets of stirring shafts (42) are fixedly connected to the surface of the rotating shaft (40).

5. The online film edge-recycling device according to claim 1, characterized in that: It also includes a motor located on top of the protective frame (20), and the motor is connected to the rotating shaft (40) by a transmission belt.

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