Remaining material recovery device after shaping of PET (Polyethylene Terephthalate) sheet

Abstract

The utility model discloses an excess material recovery device after PET sheet shaping, and belongs to the field of PET sheet excess material recovery. The excess material recovery device after PET sheet shaping comprises a treatment frame with a feeding hopper at the upper end, a soaking barrel is arranged on one side of the upper end of the treatment frame, a preprocessing frame is arranged at the upper end of the outer portion of the soaking barrel, and a water inlet pipe is arranged on one side of the upper end of the preprocessing frame. The utility model solves the problem that the existing particle crushing structure for recycling and processing the PET foam material is not provided with a cleaning structure for additionally cleaning the excess PET sheet material, so that a user needs to frequently clean the crushing net cylinder and overhaul the equipment. After the PET sheet excess materials are placed in the preprocessing frame to be cleaned and smashed, the cleaned small PET sheet excess materials can be smashed in the processing frame more quickly.

Description

Technical Field

[0001] This utility model relates to the field of PET sheet waste recycling, specifically a PET sheet waste recycling device after shaping. Background Technology

[0002] During the PET sheet forming process, the cutting step generates waste material. To effectively utilize this waste material, it needs to be recycled. The recycling process includes crushing the waste material into granules. This step ensures that the waste material is in a form suitable for reuse. Subsequently, these crushed granules are mixed with new PET raw materials and used together to produce new PET products. Therefore, a PET sheet forming waste material recycling device refers to a device or system that can process the waste material generated during the forming process, crush it into reusable granules, and mix it with new raw materials for reuse in production. This device aims to improve resource utilization, reduce waste, and realize the recycling of PET materials.

[0003] Chinese patent CN221066926U discloses a granulation structure for recycling and processing PET foam materials. The structure includes a pulverizer box, an inner support fixedly mounted on the inner wall of the pulverizer box, and a pulverizing screen fixedly mounted on the inner side of the inner support. A pulverizing mechanism for crushing PET foam materials is fixedly installed at one end of the pulverizer box, and a granule guide cylinder is fixedly connected to the bottom of the pulverizer box. The pulverization of PET foam materials is achieved through a rotating crushing method within the screen cylinder. A negative suction mechanism guides the pulverized PET foam materials into the granule guide cylinder, and periodically pushes and compresses the granules for timely filling. This reduces the probability of loose granules clogging the outlet and facilitates granule compression and collection. The structure is characterized by simple operation, easy maintenance, and high pulverization efficiency.

[0004] The granulation structure for recycling and processing PET foam materials described in the above patent has only one crushing position during the crushing process. Foreign objects on the surface of the PET sheet residue will enter the crushing cylinder along with the PET sheet residue. There is no additional cleaning structure to clean the PET sheet residue. Foreign objects stuck on the surface of the PET sheet residue are easy to clog the inside of the crushing cylinder, requiring users to frequently clean the crushing cylinder and perform maintenance on the equipment. Utility Model Content

[0005] The purpose of this invention is to provide a PET sheet after-shaping waste recycling device. Before the PET sheet waste enters the processing frame from the feed hopper, it is cleaned and crushed inside the pre-processing frame. This allows the smaller PET sheet waste to be crushed more quickly inside the processing frame, preventing foreign matter on the surface of the PET sheet waste from accumulating and clogging inside the processing frame, thus solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a PET sheet after-shaping waste recycling device, comprising a processing frame with a feeding hopper at the upper end, an soaking tank on one side of the upper end of the processing frame, a pre-processing frame at the upper end of the soaking tank, a water inlet pipe on one side of the upper end of the pre-processing frame, a drain pipe on one side of the lower end of the soaking tank, a drying fan at one end of the pre-processing frame, heating elements on both sides of one end of the drying fan, and a first cutter at the upper end of the outer side of the pre-processing frame. The first cutter can be embedded inside the pre-processing frame to preliminarily crush the PET sheet waste placed inside the pre-processing frame, while the discharge from the water inlet pipe allows liquid to directly enter the PET sheet waste inside the pre-processing frame for contact and cleaning.

[0007] Preferably, a first support frame is welded to the side of the feed hopper near the soaking tank at both ends. The first support frame is rotatably connected to the pre-processing frame via a rotating shaft. The support of the first support frame and the connection of the rotating shaft facilitate the rotation and flipping of the pre-processing frame.

[0008] Preferably, a transmission frame is provided on one side of the upper outer end of the first cutter. The transmission frame can drive the first cutter to adjust its horizontal position. When there is no need to cut the PET sheet residue inside the pre-processing frame, the first cutter can be retracted. At the same time, when the first cutter is retracted outside the pre-processing frame, it is convenient to flip the pre-processing frame and dump the PET sheet residue.

[0009] Preferably, a guide bucket is provided at the lower end of the processing frame, and a second support frame is provided on one side of the upper end of the guide bucket. The second support frame is welded and fixed to the drying fan, the soaking bucket and the guide bucket. The drying fan, the soaking bucket and the guide bucket can be supported by the second support frame to achieve the cleaning and crushing of PET sheet residue.

[0010] Preferably, the transmission frame is embedded inside the second support frame and connected to the internal sliding groove of the second support frame. A threaded rod is provided through the connection position between the transmission frame and the sliding groove of the second support frame, and the outside of the threaded rod is threadedly engaged with the through position of the transmission frame. The horizontal position of the transmission frame can be adjusted by the flow guide of the second support frame and the rotation of the threaded rod.

[0011] Preferably, the outside of the water inlet pipe is connected to the outer wall of the second support frame via a slot. This slot connection facilitates the installation of the water inlet pipe and allows the liquid to fall into the pre-processed frame as it is transported through the water inlet pipe.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] This invention recycles and cuts PET sheet scraps. The scraps are pre-loaded into a pre-processing frame. Inside the frame, they first come into contact with cleaning liquid discharged from the water inlet pipe, cleaning the PET sheet scraps. The liquid discharged from the water inlet pipe can either be discharged directly through a drain pipe or have its flow restricted by a valve at one end of the drain pipe, causing the liquid to accumulate inside the soaking tank and soak and clean the PET sheet scraps placed inside the pre-processing frame. Secondly, the threaded rod drive, combined with the constraint of the second support frame, allows the motor-driven first cutter to extend into the pre-processing frame, enabling preliminary cutting of larger PET sheet scraps. This facilitates subsequent cutting by the second cutter and allows the PET sheet scraps to be fed into the processing frame from the feed hopper. Finally, the cleaned and pre-cut PET sheet scraps inside the pre-processing frame are then... Before the rotating shaft tilts towards the feed hopper, the pre-processing frame rotates the PET sheet scrap 45 degrees around the rotating shaft and stops at the 45-degree position, where it can contact the gas discharged from the drying fan. The gas can pass through the pre-processing frame and quickly dry the PET sheet scrap. The activation of the heating element can increase the temperature of the gas discharged from the drying fan, allowing the material inside the pre-processing frame to be dried more efficiently. After the PET sheet scrap is initially cut, cleaned, and dried, it is poured into the processing frame to contact the second blade for final crushing. Gradual crushing combined with the cleaning of the PET sheet scrap can improve the cleaning and crushing effect, prevent larger PET sheet scraps from not being efficiently poured into the feed hopper, and prevent PET sheet scraps with many foreign objects on the surface from clogging the crushing screen, thereby improving the recycling efficiency of PET sheet scraps and the service life of the equipment. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall external structure of this utility model;

[0015] Figure 2 This is a cross-sectional view of the internal structure of the soaking tank of this utility model;

[0016] Figure 3 This is a schematic diagram of the rotation trajectory of the pre-processed frame of this utility model;

[0017] Figure 4 For the present utility model Figure 3 Enlarged view of a portion of region A in the middle.

[0018] In the diagram: 1. Processing frame; 2. Feed hopper; 3. Guide barrel; 4. Electrically controlled telescopic rod; 5. Discharge port sealing plate; 6. Negative suction fan; 7. Soaking tank; 8. First support frame; 9. Pre-processing frame; 10. First cutter; 11. Transmission frame; 12. Drain pipe; 13. Water inlet pipe; 14. Drying fan; 15. Crushing screen cylinder; 16. Second cutter; 17. Threaded rod; 18. Rotating shaft; 19. Pusher slider; 20. Heating element; 21. Second support frame. Detailed Implementation

[0019] The present invention will be further described below with reference to specific embodiments.

[0020] like Figure 1 As shown, a PET sheet after-shaping waste recycling device according to this embodiment includes a processing frame 1, a crushing mesh cylinder 15 is arranged around the inside of the processing frame 1, and a second cutter 16 is arranged around the inside of the crushing mesh cylinder 15. The second cutter 16 rotates after being driven by a motor at one end. The rotation of the second cutter 16 can cut the PET sheet waste falling inside the crushing mesh cylinder 15, thereby crushing the PET sheet waste.

[0021] Furthermore, a guide barrel 3 is provided at the lower end of the processing frame 1. The PET sheet residue particles crushed by the second cutter 16 will pass through the crushing mesh cylinder 15 and fall into the guide barrel 3. A pusher slider 19 is provided on one side of the guide barrel 3. An electrically controlled telescopic rod 4 is provided on one side of the pusher slider 19. The extension of the electrically controlled telescopic rod 4 can push the pusher slider 19. After the pusher slider 19 is pushed, it can squeeze and make the particles falling into the guide barrel 3 move towards the other side of the guide barrel 3.

[0022] The guide barrel 3 has a discharge port sealing plate 5 on the other side of its exterior, and a negative suction fan 6 on the other side of its upper end. The negative suction fan 6 can actively extract the crushed particles inside the crushing mesh cylinder 15 by starting the negative suction fan 6, so that the particles can enter and fall into the guide barrel 3. Referring to Chinese Patent No. CN221066926U, that application describes in detail how the negative suction fan extracts the particles and how the discharge port sealing plate pushes and discharges the particles. Therefore, in this application, the electrically controlled telescopic rod 4, the negative suction fan 6, the discharge port sealing plate 5, the pusher slider 19 and the second cutter 16 are not described in detail.

[0023] In addition, in order to facilitate the PET sheet scrap falling into the processing frame 1, a feeding hopper 2 is provided at the upper part of the outside of the processing frame 1. The feeding hopper 2 passes through the processing frame 1 and extends into the crushing mesh cylinder 15. After the PET sheet scrap falls from the feeding hopper 2, it will directly enter the crushing mesh cylinder 15.

[0024] In order to clean and pre-process the PET sheet residues fed into the feed hopper 2, an soaking tank 7 is provided on one side of the upper end of the processing frame 1, a pre-processing frame 9 is provided on the upper part of the soaking tank 7, and a water inlet pipe 13 is provided on one side of the upper end of the pre-processing frame 9. The liquid for cleaning the PET sheet residues is transmitted to the interior of the pre-processing frame 9 through the water inlet pipe 13. The liquid transmitted to the interior of the pre-processing frame 9 can contact and clean the PET sheet residues.

[0025] In order to soak and drain the liquid sent in through the inlet pipe 13, a drain pipe 12 is provided on one side of the lower end of the soaking tank 7. A valve is provided at one end of the drain pipe 12. The liquid discharge status at the drain pipe 12 can be adjusted by opening the valve. When the valve is closed, the liquid will be stored inside the soaking tank 7 and soak the PET sheet residue. When the valve is opened, the cleaned liquid will be discharged directly from the drain pipe 12.

[0026] Among them, the first support frame 8 is provided on the side of the feed hopper 2 near the soaking tank 7 at both ends, and the first support frame 8 is welded and fixed to the feed hopper 2. The first support frame 8 is rotatably connected to the pre-processing frame 9 through the rotating shaft 18. One end of the rotating shaft 18 is equipped with a motor. The output of the motor corresponding to the rotating shaft 18 can cause the pre-processing frame 9 to tilt the cleaned PET sheet residue towards the feed hopper 2, and tilt the PET sheet residue into the processing frame 1.

[0027] In addition, to prevent damp PET sheet scraps from directly entering the processing frame 1, a drying fan 14 is provided at one end of the pre-processing frame 9. Electric heating elements 20 are provided on both sides of one end of the drying fan 14. After the electric heating elements 20 are started and the drying fan 14 is turned on, the drying fan 14 can draw gas and pass through the pre-processing frame 9 to contact the PET sheet scraps. The heated gas will actively dry the PET sheet scraps efficiently.

[0028] Furthermore, in order to perform preliminary crushing of larger PET sheet scraps before they are put into the processing frame 1, a first cutter 10 is provided on the upper part of the pre-processing frame 9. A transmission frame 11 is provided on one side of the upper part of the first cutter 10, and a motor is provided on the upper part of the transmission frame 11. The output shaft of the motor is welded and fixed to the upper part of the first cutter 10. The output of the motor can drive the first cutter 10 to rotate, which can actively crush the PET sheet scraps inside the pre-processing frame 9.

[0029] It is worth mentioning that, in order to connect the transmission frame 11, the drying fan 14, the soaking tank 7, and the guide tank 3, a second support frame 21 is provided on one side of the upper end of the guide tank 3. The second support frame 21 is welded and fixed to the drying fan 14, the soaking tank 7, and the guide tank 3. The second support frame 21 can support the drying fan 14, the soaking tank 7, and the guide tank 3. The transmission frame 11 is embedded inside the second support frame 21 and connected to the internal sliding groove of the second support frame 21. A threaded rod 17 is provided through the sliding groove connection position between the transmission frame 11 and the second support frame 21. The outside of the threaded rod 17 is threadedly engaged with the through position of the transmission frame 11. After the threaded rod 17 rotates and is restrained by the second support frame 21, the transmission frame 11 can drive the first cutter 10 to change from rotational motion to longitudinal horizontal position adjustment. When it is necessary to perform preliminary cutting of PET sheet scraps, the first cutter 10 can be horizontally moved and embedded inside the pre-processing frame 9 to complete the cutting of PET sheet scraps.

[0030] The outside of the water inlet pipe 13 is connected to the outer wall groove of the second support frame 21.

[0031] Working Principle: When using the device to crush and recycle the scrap material after cutting and shaping PET sheets, the crushing process is divided into two crushing positions. First, the PET sheet scrap material is put into the pre-processing frame 9. The motor drives the threaded rod 17 to rotate, which generates relative motion with the transmission frame 11. After being restricted by the second support frame 21, the transmission frame 11 changes from rotational motion to longitudinal linear motion. The longitudinal linear motion of the transmission frame 11 drives the first cutter 10 to embed into the pre-processing frame 9 where the PET sheet scrap material is placed. The motor at the upper end of the transmission frame 11 is started, and the motor drives the first cutter 10 to rotate and crush the PET sheet scrap material inside the pre-processing frame 9 for the first time. The larger PET sheet scrap material is crushed. The rotation of the threaded rod 17 causes the first cutter 10 to reset and extend out of the pre-processing frame 9. The pump connected to the water inlet pipe 13 draws out the cleaning liquid. The liquid is directly sent into the pre-processing frame 9 to contact the initially crushed PET sheet scrap material. The liquid will remain in the soaking tank 7. After cleaning the PET sheet scrap material, the valve at one end of the drain pipe 12 is opened, so that the cleaned liquid in the soaking tank 7 is directly discharged. The motor at one end of the rotating shaft 18, supported by the first support frame 8, causes the pre-processing frame 9 to rotate the PET sheet residue from the first crushing around the rotating shaft 18 by 45 degrees and fix it at the 45-degree position. The drying fan 14 and the heating element 20 at the air inlet of the drying fan 14 are then activated, causing the heated gas discharged from the drying fan 14 to pass through the pre-processing frame 9 and contact the PET sheet residue inside the pre-processing frame 9, drying the PET sheet residue. After drying, the motor at one end of the rotating shaft 18 is activated again, and the motor's output shaft causes the pre-processing frame 9 to rotate. The frame 9 completely pours the PET sheet scrap into the feed hopper 2. The PET sheet scrap, which has been crushed for the first time by the first cutter 10, comes into contact with the rotating second cutter 16. After contacting the second cutter 16, it is crushed for the second time. The crushed PET sheet scrap passes through the crushing mesh cylinder 15 and is sucked up by the negative suction fan 6 and falls into the guide barrel 3. The extended electronically controlled telescopic rod 4 pushes the PET sheet scrap particles accumulated inside the guide barrel 3 by the pusher slider 19, so that the PET sheet scrap particles are finally discharged from the outlet sealing plate 5, completing the recycling of scrap.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention.

Claims

1. A PET sheet after-forming waste recycling device, comprising a processing frame (1) with a feed hopper (2) at the upper end, characterized in that, A soaking tank (7) is provided on one side of the upper end of the processing frame (1). A pre-processing frame (9) is provided on the upper part of the outside of the soaking tank (7). A water inlet pipe (13) is provided on one side of the upper end of the pre-processing frame (9). A drain pipe (12) is provided on one side of the lower end of the soaking tank (7). A drying fan (14) is provided at one end of the pre-processing frame (9). Electric heating elements (20) are provided on both sides of one end of the drying fan (14). A first cutting tool (10) is provided on the upper part of the outside of the pre-processing frame (9).

2. The PET sheet shaping waste recycling device according to claim 1, characterized in that, The feed hopper (2) has a first support frame (8) welded on the side of the front and rear ends near the soaking tank (7). The first support frame (8) is rotatably connected to the pre-processing frame (9) through a rotating shaft (18).

3. The PET sheet shaping waste recycling device according to claim 1, characterized in that, A transmission frame (11) is provided on one side of the upper outer end of the first cutting tool (10).

4. The PET sheet shaping waste recycling device according to claim 3, characterized in that, The lower end of the processing frame (1) is provided with a guide bucket (3), and a second support frame (21) is provided on one side of the upper end of the guide bucket (3). The second support frame (21) is welded and fixed to the air drying fan (14), the soaking bucket (7) and the guide bucket (3).

5. A PET sheet shaping waste recycling device according to claim 4, characterized in that, The transmission frame (11) is embedded inside the second support frame (21) and connected to the internal sliding groove of the second support frame (21). A threaded rod (17) is provided through the sliding groove connection position of the transmission frame (11) and the second support frame (21), and the outside of the threaded rod (17) is threadedly engaged with the through position of the transmission frame (11).

6. A PET sheet after-shaping waste recycling device according to claim 5, characterized in that, The outside of the water inlet pipe (13) is connected to the outer wall groove of the second support frame (21).

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