PVC (polyvinyl chloride) film calendering production equipment for plastic recycling and processing

Abstract

The invention discloses PVC (polyvinyl chloride) film calendaring production equipment for plastic recycling and processing, which relates to the field of plastic recycling and processing and comprises a rack and a conveying belt for conveying materials. And a treatment box is installed on the right side of the top of the rack, an inlet is formed in the top of the treatment box, a sealing plate is slidably arranged in the inlet, a discharging opening is formed in the position, close to the lower ends of the two sets of smashing rollers, of the treatment box, and a heat insulation discharging plate is slidably arranged in the discharging opening. According to the PVC film calendaring production equipment for plastic recycling and processing, the material distributing mechanism is arranged, a sector gear is driven by a rotating rod to rotate, two sets of connecting frames can drive an inclined plate and a flow guide block to move back and forth, in addition, the arranged rotating rod rotates, the rotating rod can move through movement of a piston rod, and therefore the PVC film can be recycled. And the piston rod is provided with a one-way air inlet valve and a one-way pressure valve, so that waste gas in the treatment box can be conveniently collected and discharged through an exhaust pipe.

Description

Technical Field

[0001] The present invention relates to the technical field of plastic recycling and processing, in particular to a PVC film calendering production device for plastic recycling and processing. Background Art

[0002] Polyvinyl chloride (PVC) is a widely used thermoplastic plastic, and its recycling and reuse is of great significance for saving resources and reducing environmental pollution. PVC film is widely used in packaging, building materials, decoration and other industries due to its good flexibility, corrosion resistance and cost advantages. The demand for recycling and processing it into PVC film is also increasing. Therefore, calendering production equipment can be used in the preparation of PVC film.

[0003] There are many types of existing calendering production equipment, but there are still certain shortcomings in their use. It is inconvenient to adjust the calendering roller during use, which leads to certain inconveniences in the work process. In order to solve the above problems, you can refer to the prior art (Chinese patent application number CN202420130751.4, application date 2024-01-19) disclosed a calender for plastic product processing. The calender can adjust the pressure roller by the same power source through the setting of the drive component. The pressure roller is relatively close or relatively far away from the force, so that the pressing force on the plastic product can be quickly adjusted. Compared with the twin-screw adjustment method in the prior art, it can effectively reduce the labor of adjusting the pressure roller, improve the adjustment efficiency of the pressing force, and meet the use requirements. The two sets of drive rods are driven by the output gear to move relative to each other, so that the slider obtains power to drive the pressure roller to move. The principle is simple and easy to implement. At the same time, you can also refer to the adjustable plastic extrusion stretching machine disclosed in the prior art (application number CN201620240814.7, application date of the Chinese patent is 2016-03-27), which adopts a hydraulically supported adjustable calendering roller stretching machine, which greatly improves the plastic extension stability performance, and cooperates with the induction heating of the calendering roller by the induction heater to greatly improve the plastic plate molding mechanical properties and yield rate. Finally, you can refer to the calendering device for PVC film processing disclosed in the prior art (application number CN202223539160.2, application date of the Chinese patent is 2022-12-29). The calendering device drives the movable plate to move by an electric push rod, thereby driving the first motor and the first calendering roller to move, thereby facilitating the adjustment of the distance between the first calendering roller and the second calendering roller, and facilitating the adjustment of the thickness of the PVC calendering according to needs, which is more convenient to use.

[0004] Although the above equipment can solve the above problems, there are still certain defects in actual use. After the plastic is recycled, it needs to be processed to ensure that the recycled plastic can be used. However, in the existing technology, after the plastic is heated and melted, bubbles are easily generated inside the plastic. When the fluid plastic containing bubbles is calendered, it will directly affect the production efficiency of the PVC film.

[0005] Therefore, we propose a PVC film calendering production equipment for plastic recycling processing in order to solve the problems raised above. Summary of the Invention

[0006] The purpose of the present invention is to provide a PVC film calendering production equipment for plastic recycling processing, so as to solve the problem in the current market proposed by the above background technology that plastics need to be processed after recycling, so as to ensure the use of the recycled plastics. However, in the prior art, after the plastics are heated and melted, bubbles are easily generated inside the plastics. When the fluid plastics containing bubbles are calendered, the production efficiency of the PVC film will be directly affected.

[0007] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a PVC film calendering production equipment for plastic recycling processing, comprising a frame and a conveyor belt for conveying materials; a calendering module is installed at the upper position of the frame, a cooling module is installed at the left position of the calendering module, a trimming assembly is installed at the outer side of the cooling module near the top side of the conveyor belt, a guide block is also provided at the outer position of the trimming assembly, a guide groove is provided inside the frame, and the outer end of the guide groove corresponds to the inside of the collecting box, and a collecting box is also placed at the left bottom position of the frame; a processing box is installed at the top right position of the frame, an inlet is provided at the top of the processing box, a sealing plate is slidingly provided inside the inlet, and a discharge port controlled by an electromagnetic valve is provided at the bottom of the processing box, a discharge port is provided at the lower end position of the processing box near the two groups of crushing rollers, a heat insulation discharge plate is slidingly provided inside the discharge port, and a heat-resistant rubber ring is nested on the outer side of the heat insulation discharge plate.

[0008] Preferably, the outer end of the exhaust pipe is connected to the output end of the suction pump to absorb the harmful gases inside the processing box.

[0009] Preferably, two groups of crushing rollers are provided at the inner position of the upper end of the processing box, the end positions of the two groups of crushing rollers are meshed with each other through two groups of gears of the transmission assembly, and the axial end position of one group of crushing rollers is connected to the axial end position of the rotating rod through the transmission belt of the transmission assembly.

[0010] Preferably, the material distribution mechanism includes fan-shaped gears fixed at the outer positions of both ends of the rotating rod, the outer ends of the fan-shaped gears are meshed and connected to the inner side of the connecting frame, and the two sides of the connecting frame are slidably arranged inside the processing box through protrusions. Inclined plates are also fixed at the two sides of the connecting frame, and several groups of guide blocks are arranged on the surface of the inclined plates.

[0011] Preferably, a cam is fixed in the middle position of the rotating rod, and the inner position of the upper end of the cam is fitted on the inner side of the convex rod, the top position of the convex rod is fixed at the bottom center position of the thermal insulation blanking plate, and the two sides of the thermal insulation blanking plate are fixed at the top of the fixed rod, and the bottom of the fixed rod is connected to the inside of the accommodating rod through a spring, and the bottom position of the accommodating rod is fixed inside the processing box.

[0012] Preferably, the inclined plate corresponds to the cavity below the processing box, and the interior of the cavity forms three groups of partitions through two groups of heating plates, and several groups of discharge ports are opened at the lower end of the partitions, and the bottom of the discharge port corresponds to the bottom position of the processing box.

[0013] Preferably, the bottom position of the protruding rod is arranged in an arc shape, and the protruding rod forms a sliding structure with the interior of the frame through the cam.

[0014] Preferably, several groups of air inlets are opened on the outer side of the middle end of the rotating rod, and the interior of the air inlet is hollow, and a one-way air inlet valve is installed in the hollow, and a reciprocating screw is threadedly connected to one end of the rotating rod close to the exhaust pipe, a piston rod is fixed to the left end of the reciprocating screw, and the right end of the reciprocating screw is slidably set on the outside of the guide square tube.

[0015] Preferably, both ends of the guide square tube are penetrated, and a one-way pressure valve is provided at the center of the piston rod, and the outer end of the guide square tube is connected to the end of the exhaust pipe.

[0016] Preferably, the interior of the cooling module includes a fan body, the output end of the fan body is connected to the air supply plate through a hose, the shaft end of the air supply plate is rotatably arranged on the outside of the fan body and a full gear is fixed thereon, the shaft end position of the air supply plate principle full gear is connected to the outer wall of the fan body through a torsion spring, the outer end position of the full gear is engaged with one side of the half gear, the end of the half gear is fixed to the end of the impeller, and the impeller is sealed and rotated inside the exhaust pipe.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows: the PVC film calendering production equipment for plastic recycling processing is provided with a material dividing mechanism, which drives the fan-shaped gear to rotate by the rotating rod to realize that the two sets of connecting frames drive the inclined plate and the guide block to move back and forth, so that the crushed material falls on the top of the inclined plate, and the cam can be rotated to realize that the convex rod drives the heat-insulating blanking plate to move, so that the heat-insulating blanking plate can be moved back and forth inside the processing box, which is convenient for uniformly unloading into the three groups of compartments. In addition, by rotating the rotating rod provided, the rotating rod can be rotated through the movement of the piston rod, and the piston rod can be conveniently set through the one-way air intake valve and the one-way pressure valve to collect and discharge the exhaust gas inside the processing box through the exhaust pipe. The specific contents are shown as follows: 1. A rotating rod is provided, and the rotation of the rotating rod can drive the sector gear to rotate, so that the connecting frame engaged with the outer side of the sector gear can move back and forth through the setting of the protrusion. The connecting frame drives the inclined plate and the guide block to move back and forth, so that the crushed plastic can be separated through the guide block for material processing, and then can be put into different compartments, which is convenient for uniform heating and convenient for subsequent discharge processing.

[0018] 2. A rotating rod is provided. By rotating the rotating rod, the threaded reciprocating screw can move back and forth inside the treatment box through the guide square tube, and air can be inhaled through the setting of the piston rod and the one-way air intake valve. During the movement, the one-way pressure valve will also be driven to discharge, so that the harmful gas is transported through the rotating rod. In addition, the impeller is driven by the gas to rotate, so that the half gear can drive the full gear to rotate, and then the air supply plate can be rotated back and forth on the inner side of the lower end of the fan body to achieve multi-directional cooling treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the main structure of the present invention; Figure 2 This is a rear view structural diagram of the present invention; Figure 3 This is a schematic diagram of the main structure of the cooling module of the present invention; Figure 4 This is a schematic diagram of a partial cross-sectional structure of a processing box of the present invention; Figure 5 This is a schematic diagram of the main structure of the crushing roller of the present invention; Figure 6 For the present invention Figure 4 A in the middle is an enlarged structural diagram; Figure 7 This is a schematic diagram of the main structure of the inclined plate of the present invention; Figure 8 This is a schematic diagram of the main structure of the accommodating rod of the present invention; Figure 9This is a schematic diagram of the main cross-sectional structure of the rotating rod of the present invention; Figure 10 This is a schematic diagram of the cross-sectional structure of the processing box of the present invention.

[0020] Figure: 1. Frame; 2. Conveyor belt; 3. Calendering module; 4. Cooling module; 401. Fan body; 402. Air supply plate; 403. Full gear; 404. Half gear; 405. Impeller; 406. Torsion spring; 5. Trimming assembly; 6. Guide block; 601. Guide trough; 7. Collection box; 8. Processing box; 801. Inlet; 802. Discharge port; 9. Fixed motor; 10. Crushing roller; 11. Transmission Components; 12. Rotating rod; 1201. Air inlet; 1202. One-way air inlet valve; 1203. Reciprocating screw; 1204. Piston rod; 1205. Guide square tube; 13. Fan gear; 14. Connecting frame; 15. Inclined plate; 16. Guide block; 17. Cam; 18. Protruding rod; 19. Insulating blanking plate; 20. Fixed rod; 21. Accommodating rod; 22. Heating plate; 23. Discharge port; 24. Exhaust pipe. DETAILED DESCRIPTION

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] See also Figures 1-10 The present invention provides the following technical solution: a PVC film calendering production equipment for plastic recycling processing.

[0023] Example 1: In order to facilitate the processing of recycled plastics, please refer to the attached Figure 1 -Attached Figure 9, including a frame 1 and a conveyor belt 2 for conveying materials; a calendering module 3 is installed at the upper position of the frame 1, a cooling module 4 is installed at the left position of the calendering module 3, a trimming assembly 5 is installed on the outside of the cooling module 4 near the top side of the conveyor belt 2, and a guide block 6 is also provided on the outside of the trimming assembly 5. A guide groove 601 is opened inside the frame 1, and the outer end of the guide groove 601 corresponds to the inside of the collection box 7, and a collection box 7 is also placed at the bottom left of the frame 1; a processing box 8 is installed at the top right position of the frame 1, and a fixed motor 9 is installed at the upper end position of the processing box 8, and the output end of the fixed motor 9 is fixed It is fixed at one end of the crushing roller 10, and the other end of the crushing roller 10 is connected to the rotating rod 12 through the transmission component 11. The rotation of the rotating rod 12 realizes the operation of the material distribution mechanism. The setting of the material distribution mechanism realizes the uniform discharge of the materials inside the processing box 8. One end of the rotating rod 12 is connected to the exhaust pipe 24; the outer end of the exhaust pipe 24 is connected to the output end of the suction pump, which can realize the absorption of harmful gases inside the processing box 8; two groups of crushing rollers 10 are provided at the inner side of the upper end of the processing box 8. The end positions of the two groups of crushing rollers 10 are meshed with two groups of gears of the transmission component 11. One group of crushing rollers The shaft end position of 10 is connected to the shaft end position of the rotating rod 12 through the transmission belt of the transmission assembly 11; the material distribution mechanism includes a sector gear 13 fixed to the outer position of both ends of the rotating rod 12, the outer end of the sector gear 13 is meshed and connected to the inner side of the connecting frame 14, and the two sides of the connecting frame 14 are slidably arranged inside the processing box 8 through the protrusions. The two sides of the connecting frame 14 are also fixed with inclined plates 15, and the surface of the inclined plates 15 is provided with several groups of guide blocks 16; the middle position of the rotating rod 12 is also fixed with a cam 17, and the upper end inner position of the cam 17 is fitted on the inner side of the protruding rod 18, and the top position of the protruding rod 18 is fixed The bottom center position of the heat-insulating blanking plate 19 and the two side positions of the heat-insulating blanking plate 19 are fixed on the top of the fixed rod 20. The bottom of the fixed rod 20 is connected to the inside of the accommodating rod 21 through a spring, and the bottom position of the accommodating rod 21 is fixed inside the processing box 8; the inclined plate 15 corresponds to the cavity below the processing box 8, and the inside of the cavity is formed into three groups of partitions by two groups of heating plates 22. Several groups of discharge ports 23 are opened at the lower end position of the partition, and the bottom of the discharge port 23 corresponds to the bottom position of the processing box 8; the bottom position of the convex rod 18 is set in an arc shape, and the convex rod 18 forms a sliding structure with the inside of the frame 1 through the cam 17.

[0024] Before using the device, it is necessary to inspect the entire device to facilitate normal operation. The heated raw materials are transported to the top position of the conveyor belt 2 through the processing box 8, and then the raw materials can be moved by the operation of the conveyor belt 2. When the raw materials move to the bottom of the calendering module 3, the calendering module 3 can be used to calender the raw materials, thereby obtaining a formed PVC film. The formed PVC film is then cooled by the setting of the cooling module 4. In addition, the trimming component 5 cuts the excess PVC film. At this time, the excess PVC film can be transported to the inside of the collection box 7 through the guide block 6 and the guide groove 601. The excess waste can be concentrated in the inside of the processing box 8. At this time, the fixed motor 9 on the top of the processing box 8 is started to work, so that the fixed motor 9 drives the crushing roller 10 to rotate. In addition, the other end of the crushing roller 10 is matched with the two sets of gears provided by the transmission component 11, and then the two sets of crushing rollers 10 can be rotated, and the excess PVC film can be crushed by the crushing roller 10. In addition, the crushing roller 10 is driven by the transmission component 11. The transmission belt of the component 11 can drive the rotating rod 12 to rotate, so that the rotating rod 12 can rotate stably in the internal position of the processing box 8. When the rotating rod 12 rotates, the cam 17 fixed in the middle of the rotating rod 12 will also rotate. At this time, the cam 17 can drive the convex rod 18 set on the top to move, and the convex rod 18 can drive the heat insulation blanking plate 19 to move in the internal position of the processing box 8. At this time, the crushed PVC film will pass through the heat insulation blanking plate 19 to open the outlet for discharge. At this time, the crushed raw material will fall off to the inclined surface. The top of the plate 15, and the rotating rod 12 will also drive the sector gear 13 to rotate, so that the sector gear 13 can drive the meshing connection connection frame 14 to move back and forth stably inside the processing box 8 through the protrusion. At this time, the connection frame 14 will drive the inclined plate 15 and the guide block 16 to move back and forth above the two sets of heating plates 22, so that the crushed PVC film falls into the compartment, and the crushed PVC film is heated by the heating plate 22. Through the above settings, the PVC film can be evenly recycled and processed.

[0025] Example 2: In order to solve the problem that the plastic needs to be processed after recycling, so as to ensure the use of the recycled plastic, the existing technology generates a large amount of waste gas after the plastic is processed. The emission of waste gas will affect the health of the workers. Figure 1 -Attached Figure 4 and attached Figure 9; Several groups of air inlets 1201 are also opened on the outside of the middle end of the rotating rod 12, and the interior of the air inlet 1201 is hollow, and a one-way air inlet valve 1202 is installed in the hollow, and a reciprocating screw rod 1203 is threadedly connected to one end of the rotating rod 12 close to the exhaust pipe 24, and a piston rod 1204 is fixed to the left end of the reciprocating screw rod 1203, and the right end of the reciprocating screw rod 1203 is slidably arranged on the outside of the guide square tube 1205; both ends of the guide square tube 1205 are through-set, and the center position of the piston rod 1204 is provided with a one-way pressure valve, and the outer end of the guide square tube 1205 is connected to the exhaust pipe 24. The ends of the air pipe 24 are connected; the interior of the cooling module 4 includes a fan body 401, the output end of the fan body 401 is connected to the air supply plate 402 through a hose, and the shaft end of the air supply plate 402 is rotatably arranged. A full gear 403 is also fixed on the outside of the fan body 401. The shaft end position of the full gear 403 of the air supply plate 402 is connected to the outer wall of the fan body 401 through a torsion spring 406. The outer end position of the full gear 403 is engaged with one side of the half gear 404, and the end of the half gear 404 is fixed to the end of the impeller 405. The impeller 405 is sealed and rotated inside the exhaust pipe 24.

[0026] When the rotating rod 12 rotates, the rotating rod 12 will also drive the threaded reciprocating screw 1203 to move, and the reciprocating screw 1203 will also drive the piston rod 1204 to move back and forth inside the guide square tube 1205. When the reciprocating screw 1203 moves close to one end of the rotating rod 12, the harmful gas will be absorbed through the air inlet 1201 and the one-way air inlet valve 1202. When the reciprocating screw 1203 moves in the opposite direction, the piston rod 1204 will push the harmful gas. Since a one-way pressure valve is provided on one side of the piston rod 1204 and a one-way air inlet valve 1202 is provided inside the rotating rod 12, the harmful gas is transported between the piston rod 1204 and the one-way pressure valve. Then the continuous movement of the piston rod 1204 can cause the one-way pressure valve to It will be opened, and the guide square tube 1205 will also be opened through. At this time, the gas will be transported to the inside of the exhaust pipe 24 through the guide square tube 1205. At this time, the harmful gas inside the treatment box 8 can be discharged. When the harmful gas continues to discharge harmful gas through the exhaust pipe 24, the gas will push the impeller 405 to rotate inside the exhaust pipe 24, and then the impeller 405 drives the half gear 404 to rotate, causing the full gear 403 engaged with one side of the half gear 404 to rotate on the outer wall of the cooling module 4. In addition, the full gear 403 can drive the air supply plate 402 to rotate. At this time, the air supply plate 402 rotates at multiple angles on the lower inner side of the fan body 401. At this time, the PVC film formed on the top of the conveyor belt 2 can be cooled at multiple angles. The above settings can be used for efficient processing.

[0027] Example 3: This example is different from Example 1 in that it can also solve the problem of needing to process the plastic after recycling, thereby ensuring that the recycled plastic can be used. In the prior art, after the plastic is heated and melted, bubbles are easily generated inside the plastic. When the fluid plastic containing bubbles is calendered, it will directly affect the production efficiency of the PVC film. Please refer to the attached Figure 10 A processing box 8 is installed on the top right side of the frame 1. An inlet 801 is provided on the top of the processing box 8. A sealing plate is slidably provided inside the inlet 801. A discharge port 23 controlled by a solenoid valve is provided at the bottom of the processing box 8. A discharge port 802 is provided at the lower end of the processing box 8 near the two sets of crushing rollers 10. A heat-insulating discharge plate 19 is slidably provided inside the discharge port 802, and a heat-resistant rubber ring is nested on the outside of the heat-insulating discharge plate 19. When the material distribution mechanism is working normally inside the processing box 8, it not only drives the exhaust mechanism to move, but also the continuous discharge of gas will cause the air pressure inside the processing box 8 to decrease. In addition, through the heat-resistant rubber ring provided at the bottom of the heat-insulating blanking plate 19, the upward movement of the heat-insulating blanking plate 19 will first cause the air pressure inside the cavity to change, and then the bubbles inside the melted plastic can be enlarged while the air pressure changes, and burst after reaching the maximum, thereby achieving the purpose of defoaming. In addition, the negative pressure phenomenon will also drive the melted raw materials inside the cavity to float slightly inside the discharge port 23, which can avoid the blockage of the plastic remaining in the discharge port 23, thereby improving the efficiency of raw material processing.

[0028] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A PVC film calendering production device for plastic recycling processing, comprising a frame (1) and a conveyor belt (2) for conveying materials; Its characteristics are: A calendering module (3) is installed above the frame (1), a cooling module (4) is installed on the left side of the calendering module (3), a trimming assembly (5) is installed on the outside of the cooling module (4) near the top side of the conveyor belt (2), and a guide block (6) is also provided on the outside of the trimming assembly (5). A guide groove (601) is provided inside the frame (1), and the outer end of the guide groove (601) corresponds to the inside of the collection box (7). A collection box (7) is also placed at the bottom left side of the frame (1); A processing box (8) is installed at the top right position of the frame (1), and an inlet (801) is provided at the top of the processing box (8), a sealing plate is slidably provided inside the inlet (801), and a discharge port (23) closed by a solenoid valve is provided at the bottom of the processing box (8), and a discharge port (802) is provided at the lower end position of the processing box (8) near the two groups of crushing rollers (10), and a heat-insulating discharge plate (19) is slidably provided inside the discharge port (802), and a heat-resistant rubber ring is embedded on the outer side of the heat-insulating discharge plate (19).

2. The PVC film calendering production equipment for plastic recycling according to claim 1, characterized in that: A fixed motor (9) is installed at the upper end of the processing box (8), and the output end of the fixed motor (9) is fixed to one end of the crushing roller (10), and the other end of the crushing roller (10) is connected to the rotating rod (12) through the transmission component (11). The rotation of the rotating rod (12) realizes the operation of the material distribution mechanism. The setting of the material distribution mechanism realizes the uniform feeding and processing of the materials inside the processing box (8). One end of the rotating rod (12) is connected to the exhaust pipe (24). The outer end of the exhaust pipe (24) is connected to the output end of the suction pump to realize the absorption and processing of the harmful gas inside the processing box (8).

3. The PVC film calendering production equipment for plastic recycling according to claim 1, characterized in that: Two groups of crushing rollers (10) are provided at the inner side of the upper end of the processing box (8), the end positions of the two groups of crushing rollers (10) are meshed with each other through two groups of gears of the transmission assembly (11), and the axial end position of one group of crushing rollers (10) is connected to the axial end position of the rotating rod (12) through the transmission belt of the transmission assembly (11).

4. The PVC film calendering production equipment for plastic recycling according to claim 2, characterized in that: The material distribution mechanism includes fan-shaped gears (13) fixed at the outer positions of both ends of the rotating rod (12), the outer ends of the fan-shaped gears (13) are meshed and connected to the inner side of the connecting frame (14), and the two sides of the connecting frame (14) are slidably arranged inside the processing box (8) through protrusions. The two sides of the connecting frame (14) are also fixed with inclined plates (15), and the surface of the inclined plates (15) is provided with a plurality of groups of guide blocks (16).

5. The PVC film calendering production equipment for plastic recycling according to claim 4, characterized in that: A cam (17) is also fixed at the middle position of the rotating rod (12), and the inner side of the upper end of the cam (17) is fitted on the inner side of the protruding rod (18). The top position of the protruding rod (18) is fixed at the bottom center position of the heat-insulating blanking plate (19). The two sides of the heat-insulating blanking plate (19) are fixed at the top of the fixed rod (20). The bottom of the fixed rod (20) is connected to the inside of the accommodating rod (21) through a spring. The bottom position of the accommodating rod (21) is fixed inside the processing box (8).

6. The PVC film calendering production equipment for plastic recycling according to claim 4, characterized in that: The inclined plate (15) corresponds to the cavity below the processing box (8), and the interior of the cavity forms three groups of partitions through two groups of heating plates (22). The lower ends of the partitions are provided with a plurality of groups of discharge ports (23), and the bottoms of the discharge ports (23) correspond to the bottom of the processing box (8).

7. The PVC film calendering production equipment for plastic recycling according to claim 5, characterized in that: The bottom position of the convex rod (18) is arranged in an arc shape, and the convex rod (18) forms a sliding structure with the interior of the frame (1) through the cam (17).

8. The PVC film calendering production equipment for plastic recycling according to claim 2, characterized in that: A plurality of air inlets (1201) are provided on the outer side of the middle end of the rotating rod (12), and the interior of the air inlet (1201) is hollow, and a one-way air inlet valve (1202) is installed in the hollow. A reciprocating screw rod (1203) is threadedly connected to one end of the rotating rod (12) close to the exhaust pipe (24), a piston rod (1204) is fixed to the left end of the reciprocating screw rod (1203), and the right end of the reciprocating screw rod (1203) is slidably arranged on the outer side of the guide square tube (1205).

9. The PVC film calendering production equipment for plastic recycling according to claim 8, characterized in that: Both ends of the guide square tube (1205) are penetrated, and a one-way pressure valve is provided at the center of the piston rod (1204). The outer end of the guide square tube (1205) is connected to the end of the exhaust pipe (24).

10. The PVC film calendering production equipment for plastic recycling according to claim 1, characterized in that: The interior of the cooling module (4) includes a fan body (401), the output end of the fan body (401) is connected to the air supply plate (402) through a hose, the shaft end of the air supply plate (402) is rotatably arranged on the outside of the fan body (401), and a full gear (403) is fixed thereto. The shaft end of the full gear (403) of the air supply plate (402) is connected to the outer wall of the fan body (401) through a torsion spring (406), the outer end of the full gear (403) is meshed with one side of a half gear (404), the end of the half gear (404) is fixed to the end of an impeller (405), and the impeller (405) is sealed and rotatably arranged inside the exhaust pipe (24).

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