PVC extrusion molding machine for recycled PVC pressure film

Abstract

The application discloses a PVC drawing film recycling material extruding forming machine and relates to the field of plastic recycling.The PVC drawing film recycling material extruding forming machine is provided with a conical flow guide surface of a filter disc, can uniformly distribute molten materials, avoids the problem of uneven filtration caused by excessive local pressure of material accumulation, cooperates with uniformly distributed filter holes of a disc surface, intercepts impurities and caked waste materials in the molten materials, purifies the recycled materials, cooperates with the conical surface of the filter disc and an inner retaining ring, under the extrusion of subsequent materials, makes the materials accumulate in the gap between the inner retaining ring and a through-groove cover, avoids accumulation at the filtering position, influences the filtering effect of the filter disc, cooperates with a front sealing disc and a rear sealing disc, forms a sealing structure design of double-layer sealing discs, forms a temperature insulation space, cooperates with an outer cover cylinder and an inner cover cylinder to form a heat insulation cavity, reduces heat loss, avoids leakage of molten raw materials, and improves the sealing performance and safety of equipment operation.

Description

Technical Field

[0001] This invention specifically relates to an extrusion molding machine for recycled PVC calendered film, and pertains to the field of plastic recycling. Background Technology

[0002] PVC calendered film recycled material is recycled PVC raw material made by recycling, sorting, crushing, cleaning and removing impurities from the scraps and waste generated in the production of PVC calendered film, as well as the discarded calendered film after use, and then re-granulating or directly crushing it. PVC calendered film recycled material extrusion molding machine refers to a special screw extrusion equipment that reheats and melts PVC calendered film recycled material and extrudes it into recycled granules or products. A waste plastic recycling extruder based on recycling, disclosed in CN118205187B, includes a base, an extrusion cylinder mounted on the base, a closed hopper mounted on the extrusion cylinder, a feed pipe inserted above the side wall of the closed hopper, a suction pipe mounted on the feed pipe, and a negative pressure pipe inserted below the side wall of the closed hopper. The end of the negative pressure pipe near the closed hopper extends into the closed hopper and is equipped with a throttling valve. An exhaust groove is formed on the inner wall of the extrusion cylinder, and the end of the negative pressure pipe away from the closed hopper extends into the exhaust groove. This invention reduces the feeding height by using negative pressure suction, improving the convenience of feeding. It also utilizes the generated negative pressure to separate raw materials from dust, and uses the negative pressure to generate a micro-negative pressure in the hot-melt zone to expel air trapped in the hot-melt plastic, improving product quality. Furthermore, it can preheat the raw materials, making it more energy-efficient and environmentally friendly. The negative pressure airflow circulation improves the smoothness of feeding, making the equipment more reliable and convenient to use. In existing equipment, a filter assembly is usually installed at the extrusion end of the extrusion equipment to block agglomerated waste and particulate foreign objects, thus preventing surface defects caused by agglomeration and particulate matter in the extruded material. However, during the filtration process, the blocked waste accumulates on the filter surface, causing blockage at the extrusion end and affecting the uniform extrusion of subsequent materials. Summary of the Invention

[0003] To address the aforementioned problems, a technical solution is proposed: a PVC calendered film recycled material extrusion molding machine, comprising: A base, a heating mechanism is installed on the top of the base, a filter mechanism is installed at the extrusion end of the heating mechanism, a die head mechanism is installed on the outside of the filter mechanism, and a motor is fixedly installed at the end of the heating mechanism away from the filter mechanism. The output end of the motor passes through the heating mechanism and extends into its interior. The filtering mechanism includes a connecting disc fixed to the extrusion end of the heating mechanism. A rotating groove ring is fixedly installed on the inner wall of the connecting disc. The rotating groove ring has an annular groove on its side near the heating mechanism, and a filter disc is fixedly installed on its inner wall. Filter holes are evenly distributed on the outer side of the filter disc. The side of the filter disc near the heating mechanism has a convex conical surface. An inner retaining ring is fixedly installed on the side of the filter disc near the heating mechanism. A through-groove cover is rotatably installed at the annular groove of the rotating groove ring, and through-grooves are evenly distributed on its outer side. The through-slot cover is located outside the inner baffle ring. Through the conical guide surface of the filter disc, it can uniformly distribute the molten material, avoiding uneven filtration caused by excessive localized material accumulation pressure. Combined with the evenly distributed filter holes on the disc surface, it intercepts impurities and agglomerated waste in the molten material, purifying and recovering the material. Simultaneously, the conical surface of the filter disc cooperates with the inner baffle ring, allowing the material to accumulate in the gap between the inner baffle ring and the through-slot cover under the pressure of subsequent material, preventing accumulation at the filtration position and thus avoiding affecting the filtration effect of the filter disc. A gap exists between the through-slot cover and the inner baffle ring.

[0004] Preferably, the side of the through-slot cover near the heating mechanism has a raised conical surface, and an inner turntable is fixedly installed on the inner wall of the through-slot cover. The side of the inner turntable near the heating mechanism has an annular groove. An inner guide ring is fixedly installed on the side of the through-slot cover near the filter disc. The inner guide ring is located outside the through-slot of the through-slot cover, and the end of the inner guide ring away from the through-slot cover is inclined inward. There is a gap between the inner guide ring and the inner retaining ring. The side of the inner retaining ring near the inner guide ring is a slope. A circular through-slot is opened at the center of the outer side of the inner turntable. A shaft top sleeve is fixedly installed at the center of the side of the filter disc near the heating mechanism. A conical groove is opened on the side of the shaft top sleeve near the heating mechanism.

[0005] Preferably, the heating mechanism includes an outer casing, an inner casing fixedly installed on the inner wall of the outer casing, a gap between the inner and outer casings, a heating cylinder one and a heating cylinder two fixedly installed between the inner and outer casings, the heating cylinder one being close to the die head mechanism, a feed chute fixedly installed on the top of the outer casing near the motor, an end sealing plate fixedly installed at the end of the outer casing near the motor, a front sealing plate and a rear sealing plate fixedly installed on the inner wall of the outer casing near the motor, the rear sealing plate being located on the side of the front sealing plate near the motor, and the rear sealing plate being... There is a gap between the front and rear sealing discs. The front and rear sealing discs cooperate to form a double-layer sealing structure design, which also forms a heat insulation space. Together with the outer and inner covers, they form a heat insulation cavity, reducing heat loss and preventing leakage of molten raw materials, thus improving the sealing and safety of the equipment operation. A drive shaft is rotatably installed on the inner wall of the front sealing disc. The end of the drive shaft near the motor passes through the rear sealing disc and extends to the other side. The end of the drive shaft near the motor is fixedly connected to the output shaft of the motor through a coupling. A fixed cylinder is fixedly installed on the outer side of the drive shaft.

[0006] Preferably, an auger plate is fixedly installed on the outer side of the fixed cylinder. The width of the auger plate is adapted to the inner diameter of the inner cover cylinder. A convex ring is provided at the end of the fixed cylinder away from the motor, and the fixed cylinder is adapted to rotate through the convex ring and the annular groove of the inner turntable. A spiral convex strip is fixedly installed on the inner wall of the inner cover cylinder. The spiral convex strip is evenly installed along the center position of the inner cover cylinder, and the side of the spiral convex strip away from the inner cover cylinder is a raised arc surface. The arc surface of the spiral convex strip contacts the outer side of the auger plate, and the spiral convex strip is made of heat-conducting metal material. By setting the spiral convex strip of heat-conducting metal material on the inner wall of the inner cover cylinder, the heating heat can be quickly conducted. The arc surface of the spiral convex strip fits closely with the auger plate. During the process of the drive shaft driving the auger plate to rotate and transport materials, it can continuously disturb the material, allowing the recycled material to come into full contact with the heat source during the pushing process, realizing full and uniform melting of the raw materials, and reducing the generation of unmelted particles and agglomerated impurities. The spiral convex strip is located on the inner side of the heating cylinder two.

[0007] Preferably, the die head mechanism includes a connecting cylinder, which is fixedly installed on the outside of the connecting disc. An extrusion cylinder is fixedly installed on the outside of the connecting cylinder. The inner diameter of the extrusion cylinder gradually decreases as it moves away from the connecting cylinder. A sealing disc is fixedly installed at the end of the extrusion cylinder away from the connecting cylinder. An extrusion tube is fixedly installed on the outside of the sealing disc. The upper and lower sides of the inner wall of the extrusion tube near the sealing disc are both inclined surfaces. Arc-shaped protrusions are fixedly installed on the inclined surfaces of the inner wall of the extrusion tube. By setting the inclined surfaces and uniformly distributed arc-shaped protrusions on the inner wall of the extrusion tube, the pressurized molten material can be turbulently combed, the material flow stratification can be disrupted, and the material texture can be made more uniform and delicate. This eliminates defects such as texture, uneven thickness, and surface roughness that are prone to occur in traditional extrusion processes, and improves the appearance quality and structural strength of the extruded product. The arc-shaped protrusions are uniformly installed on the inclined surfaces of the inner wall of the extrusion tube.

[0008] This invention provides an extrusion molding machine for recycled PVC calendered film, which has the following beneficial effects: (i) By setting a conical guide surface on the filter disc, the molten material can be evenly distributed, avoiding the problem of uneven filtration caused by excessive local accumulation pressure of the material. In conjunction with the evenly distributed filter holes on the disc surface, impurities and agglomerated waste in the molten material are intercepted, and the material is purified and recovered. At the same time, the conical surface of the filter disc cooperates with the inner baffle ring, and under the compression of the subsequent material, the material enters the gap between the inner baffle ring and the through groove cover and accumulates, avoiding accumulation at the filtration position and affecting the filtration effect of the filter disc.

[0009] (ii) The front and rear sealing discs work together to form a double-layer sealing structure, which also creates a heat insulation space. Together with the outer and inner covers, they form a heat insulation cavity, reducing heat loss and preventing leakage of molten raw materials, thus improving the sealing performance and safety of the equipment.

[0010] (III) By setting heat-conducting metal spiral ribs on the inner wall of the inner cover cylinder, the heating heat can be quickly conducted. The spiral rib arc surface fits and cooperates with the auger plate. During the process of the drive shaft driving the auger plate to rotate and transport materials, it can continuously disturb the material, allowing the recycled material to come into full contact with the heat source during the pushing process, so as to achieve full and uniform melting of the raw materials and reduce the generation of unmelted particles and agglomerated impurities.

[0011] (iv) By setting inclined surfaces and evenly distributed arc-shaped convex strips on the inner wall of the extrusion tube, the pressurized molten material can be turbulently combed, the material flow stratification can be disrupted, the material texture can be made more uniform and delicate, and defects such as texture, uneven thickness and surface roughness that are easy to occur in traditional extrusion processes can be eliminated, thereby improving the appearance quality and structural strength of the extruded product. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a side view of the overall structure of the present invention; Figure 3 This is a schematic diagram of the heating mechanism of the present invention; Figure 4 This is a cross-sectional view of the heating mechanism of the present invention; Figure 5 This is a partial sectional view of the heating mechanism of the present invention; Figure 6 This is a schematic diagram of the filter mechanism of the present invention; Figure 7 This is a sectional view of the filter mechanism of the present invention; Figure 8 This is a sectional side view of the filter mechanism of the present invention; Figure 9 This is a schematic diagram of the structure of the die head mechanism of the present invention; Figure 10 This is a cross-sectional view of the mold head mechanism of the present invention.

[0013] In the diagram: 1. Base; 2. Heating mechanism; 3. Filtering mechanism; 4. Die head mechanism; 5. Motor; 21. Outer cover; 22. Feed chute; 23. End sealing plate; 24. Inner cover; 25. Heating cylinder one; 26. Heating cylinder two; 27. Front sealing plate; 28. Rear sealing plate; 29. ​​Drive shaft; 210. Spiral convex strip; 211. Fixed cylinder; 212. Screw plate; 31. Connecting plate; 32. Through groove cover; 33. Inner turntable; 34. Filtering plate; 35. Shaft top sleeve; 36. Rotary groove ring; 37. Inner guide ring; 38. Inner retaining ring; 41. Connecting cylinder; 42. Extrusion cylinder; 43. Extrusion tube; 44. Arc convex strip; 45. Sealing plate. Detailed Implementation

[0014] Example 1, Reference Figures 1 to 2 and Figures 6 to 8 The present invention provides this technical solution: A PVC calendered film recycled material extrusion molding machine, comprising: A base 1 is provided, a heating mechanism 2 is installed on the top of the base 1, a filter mechanism 3 is installed at the extrusion end of the heating mechanism 2, a die head mechanism 4 is installed on the outside of the filter mechanism 3, and a motor 5 is fixedly installed at the end of the heating mechanism 2 away from the filter mechanism 3. The output end of the motor 5 passes through the heating mechanism 2 and extends into its interior. The filtering mechanism 3 includes a connecting plate 31, which is fixed to the extrusion end of the heating mechanism 2. A rotating groove ring 36 is fixedly installed on the inner wall of the connecting plate 31. The rotating groove ring 36 has an annular groove on the side near the heating mechanism 2, and a filter plate 34 is fixedly installed on the inner wall of the rotating groove ring 36. Filter holes are evenly opened on the outer side of the filter plate 34. The filter plate 34 is fixed to the extrusion end of the heating mechanism 2 via the connecting plate 31. The overall structure is sealed and stable. The convex ring at the end of the fixed cylinder 211 is adapted to rotate with the annular groove of the inner rotating plate 33, so that the rotational power of the auger plate 212 can drive the through-groove cover 32 to rotate synchronously in the annular groove of the rotating groove ring 36. After the molten raw material passes through the through-groove of the through-groove cover 32... First, the filter plate 34 is in contact with the heating mechanism 2. The side of the filter plate 34 closest to the heating mechanism 2 has a raised conical surface, which can guide the molten raw material to evenly adhere to the surface of the filter plate 34. The initial filtration is completed through the evenly distributed filter holes on the plate surface, intercepting particulate impurities and incompletely molten agglomerated waste in the raw material. The side of the filter plate 34 closest to the heating mechanism 2 has a raised conical surface. An inner baffle ring 38 is fixedly installed on the side of the filter plate 34 closest to the heating mechanism 2. A through groove cover 32 is rotatably installed at the annular groove of the rotating groove ring 36. The outer side of the through groove cover 32 has evenly distributed through grooves. The through groove cover 32 is located outside the inner baffle ring 38, and there is a gap between the through groove cover 32 and the inner baffle ring 38.

[0015] The side of the through-slot cover 32 closest to the heating mechanism 2 has a raised conical surface, and an inner rotating disk 33 is fixedly installed on the inner wall of the through-slot cover 32. An annular groove is formed on the side of the inner rotating disk 33 closest to the heating mechanism 2. An inner guide ring 37 is fixedly installed on the side of the through-slot cover 32 closest to the filter disc 34. The inner guide ring 37 is located outside the through-slot of the through-slot cover 32, and the end of the inner guide ring 37 away from the through-slot cover 32 is inclined inward. There is a gap between the inner guide ring 37 and the inner retaining ring 38. The shaft top sleeve 35 at the center of the filter disc 34 can guide the raw material flow. The central limiting and guiding mechanism prevents the raw materials from accumulating. Meanwhile, the intercepted waste can move along the conical surface of the filter disc 34 to the inner baffle ring 38. Finally, under the compression of subsequent materials, it enters the gap between the inner baffle ring 38 and the through groove cover 32 and accumulates. The inner baffle ring 38 is inclined on the side near the inner guide ring 37. A circular through groove is opened at the center of the outer side of the inner turntable 33. A shaft top sleeve 35 is fixedly installed at the center of the filter disc 34 near the heating mechanism 2. A conical groove is opened on the side of the shaft top sleeve 35 near the heating mechanism 2.

[0016] Example 2, based on Example 1, with reference to Figures 3 to 5The heating mechanism 2 includes an outer casing 21, with an inner casing 24 fixedly installed on the inner wall of the outer casing 21. A gap exists between the inner casing 24 and the outer casing 21. Heating cylinder 1 25 and heating cylinder 26 are fixedly installed between the inner casing 24 and the outer casing 21. Heating cylinder 1 25 is close to the die head mechanism 4. A feed chute 22 is fixedly installed on the top of the outer casing 21 near the motor 5. An end sealing plate 23 is fixedly installed at the end of the outer casing 21 near the motor 5. A front sealing plate 27 and a rear sealing plate 28 are fixedly installed on the inner wall of the outer casing 21 near the motor 5. The rear sealing plate 28 is located on the side of the front sealing plate 27 near the motor 5. When the motor 5 starts, its output shaft drives the transmission shaft 29 to rotate via a coupling. The transmission shaft 29 passes through the end sealing plate 23, the rear sealing plate 28, and the front sealing plate 27, achieving stable rotational transmission. A heat-insulating seal is formed between the front sealing plate 27 and the rear sealing plate 28. The cavity is sealed to prevent leakage of molten raw materials and heat loss. When the drive shaft 29 rotates, it drives the fixed cylinder 211 and the auger plate 212 fixed on the outside to rotate synchronously. At the same time, the heating cylinder 25 and the heating cylinder 26 between the outer cover cylinder 21 and the inner cover cylinder 24 are energized and heated. The spiral protrusions 210 on the inner wall of the inner cover cylinder 24 are made of heat-conducting metal material, which can quickly conduct heat and evenly heat the recycled raw materials inside the inner cover cylinder 24. The rotating auger plate 212 continuously stirs and pushes the raw materials. There is a gap between the rear sealing plate 28 and the front sealing plate 27. The drive shaft 29 is rotatably installed on the inner wall of the front sealing plate 27. The end of the drive shaft 29 near the motor 5 passes through the rear sealing plate 28 and extends to the other side. The end of the drive shaft 29 near the motor 5 is fixedly connected to the output shaft of the motor 5 through a coupling. The fixed cylinder 211 is fixedly installed on the outside of the drive shaft 29.

[0017] An auger plate 212 is fixedly installed on the outer side of the fixed cylinder 211. The width of the auger plate 212 is adapted to the inner diameter of the inner cover cylinder 24. A convex ring is provided at the end of the fixed cylinder 211 away from the motor 5, and the fixed cylinder 211 is adapted to rotate through the convex ring and the annular groove of the inner turntable 33. A spiral convex strip 210 is fixedly installed on the inner wall of the inner cover cylinder 24. The spiral convex strip 210 is evenly installed along the center position of the inner cover cylinder 24, and the side of the spiral convex strip 210 away from the inner cover cylinder 24 is a raised arc surface. The arc-shaped contact surface cooperates with the auger plate 212 to further agitate the raw material, allowing it to be heated evenly and gradually heating and melting the solid PVC recycled material into a molten colloid state. Under the continuous pushing pressure of the auger plate 212, the molten PVC colloid moves towards the extrusion end of the heating mechanism 2 and enters the filter mechanism 3 for filtration. The arc surface of the spiral protrusion 210 contacts the outer side of the auger plate 212, and the spiral protrusion 210 is made of thermally conductive metal material. The spiral protrusion 210 is located inside the heating cylinder 26.

[0018] Example 3, based on Examples 1 and 2, with reference to Figures 9 to 10The die head mechanism 4 includes a connecting cylinder 41, which is fixedly installed on the outside of the connecting plate 31. An extrusion cylinder 42 is fixedly installed on the outside of the connecting cylinder 41. The inner diameter of the extrusion cylinder 42 gradually decreases as it moves away from the connecting cylinder 41. A sealing plate 45 is fixedly installed at the end of the extrusion cylinder 42 away from the connecting cylinder 41. An extrusion tube 43 is fixedly installed on the outside of the sealing plate 45. The connecting cylinder 41 is fixed to the connecting plate 31 of the filter mechanism 3 to ensure a tight seal at the discharge point. Molten raw material enters the extrusion cylinder 42, which adopts a gradually narrowing inner diameter structure. The raw material is continuously squeezed during the conveying process, further enhancing the adhesive properties. The uniformity and density of the material are ensured by the pressurized raw material passing through the cavity of the sealing disc 45 and entering the extrusion tube 43. The inclined surface of the inner wall of the extrusion tube 43 and the evenly distributed arc-shaped convex strips 44 can perform final turbulence sorting and fine pressurization on the molten colloid, eliminating air bubbles and textures inside the colloid, making the material texture more uniform. Finally, it is extruded through the port of the extrusion tube 43 to complete the extrusion molding process of PVC calendered film recycled material. The upper and lower sides of the inner wall of the extrusion tube 43 near the sealing disc 45 are both inclined, and arc-shaped convex strips 44 are fixedly installed on the inclined surface of the inner wall of the extrusion tube 43. The arc-shaped convex strips 44 are evenly installed on the inclined surface of the inner wall of the extrusion tube 43.

[0019] In use, the crushed recycled material is introduced into the heating mechanism 2. The motor 5 drives the heating mechanism 2 to run, so that the recycled material is heated and melted inside the heating mechanism 2 and then squeezed and mixed. It is then extruded from the extrusion end of the heating mechanism 2. During the extrusion process, the material is filtered by the filtering mechanism 3. The molten material after filtration passes through the filtering mechanism 3 and enters the die head mechanism 4. The material is squeezed again by the die head mechanism 4 and finally extruded from the die head mechanism 4.

[0020] In heating mechanism 2, motor 5 starts, and its output shaft drives transmission shaft 29 to rotate via coupling. Transmission shaft 29 passes through end sealing plate 23, rear sealing plate 28, and front sealing plate 27 to achieve stable rotational transmission. A heat-insulating and sealed cavity is formed between front sealing plate 27 and rear sealing plate 28 to prevent leakage of molten raw materials and heat loss. When transmission shaft 29 rotates, it drives the fixed cylinder 211 and auger plate 212 fixed on the outside to rotate synchronously. At the same time, heating cylinder 1 25 and heating cylinder 26 between outer cover cylinder 21 and inner cover cylinder 24 are energized and heated, and the inner wall of inner cover cylinder 24... The spiral protrusion 210 is made of thermally conductive metal, which can quickly conduct heat and evenly heat the recycled material inside the inner casing 24. The rotating auger plate 212 continuously stirs and pushes the material. At the same time, the arc-shaped contact surface of the spiral protrusion 210 cooperates with the auger plate 212 to further agitate the material, so that the material is heated evenly and gradually heats and melts the solid PVC recycled material into a molten colloid state. Under the continuous pushing pressure of the auger plate 212, the molten PVC colloid moves towards the extrusion end of the heating mechanism 2 and enters the filter mechanism 3 for filtration.

[0021] In the filter mechanism 3, the filter is fixed to the extrusion end of the heating mechanism 2 by the connecting plate 31. The overall structure is sealed and stable. The convex ring at the end of the fixed cylinder 211 is adapted to the rotating groove of the inner rotating plate 33, so that the rotational power of the auger plate 212 can drive the through groove cover 32 to rotate synchronously in the annular groove of the rotating groove ring 36. After the molten raw material passes through the through groove of the through groove cover 32, it first contacts the filter plate 34. The side of the filter plate 34 near the heating mechanism 2 is a raised conical surface, which can guide the molten raw material to evenly adhere to the surface of the filter plate 34. The initial filtration is completed through the evenly distributed filter holes on the plate surface, intercepting particulate impurities and incompletely melted agglomerated waste in the raw material. The shaft top sleeve 35 at the center of the filter plate 34 can centrally limit and guide the raw material flow to avoid the concentrated accumulation of raw material. At the same time, the intercepted waste can move along the conical surface of the filter plate 34 to the inner baffle ring 38 position, and finally enter the gap between the inner baffle ring 38 and the through groove cover 32 under the extrusion of subsequent materials.

[0022] In the die head mechanism 4, the connecting cylinder 41 is fixed to the connecting plate 31 of the filter mechanism 3 to ensure the sealing of the discharge. The molten raw material enters the extrusion cylinder 42. The extrusion cylinder 42 adopts a tapered inner diameter structure. The raw material is continuously squeezed during the conveying process, which further improves the uniformity and density of the colloid. The pressurized raw material passes through the cavity of the sealing plate 45 and enters the extrusion tube 43. The inclined surface of the inner wall of the extrusion tube 43 and the evenly distributed arc protrusions 44 can perform final turbulence sorting and fine pressurization on the molten colloid, eliminate air bubbles and textures inside the colloid, and make the material texture more uniform. Finally, it is extruded through the port of the extrusion tube 43 to complete the extrusion molding process of PVC calendered film recycled material.

Claims

1. A PVC calendered film recycled material extrusion molding machine, characterized in that, include: A base (1) is provided with a heating mechanism (2) installed on the top of the base (1). A filter mechanism (3) is installed at the extrusion end of the heating mechanism (2). A die head mechanism (4) is installed on the outside of the filter mechanism (3). A motor (5) is fixedly installed at one end of the heating mechanism (2) away from the filter mechanism (3). The output end of the motor (5) passes through the heating mechanism (2) and extends into its interior. The filtering mechanism (3) includes a connecting plate (31), which is fixed to the extrusion end of the heating mechanism (2). A rotating groove ring (36) is fixedly installed on the inner wall of the connecting plate (31). The rotating groove ring (36) has an annular groove on the side near the heating mechanism (2). A filter plate (34) is fixedly installed on the inner wall of the rotating groove ring (36). Filter holes are evenly opened on the outer side of the filter plate (34). The side of the filter plate (34) near the heating mechanism (2) is a raised conical surface. An inner retaining ring (38) is fixedly installed on the side of the filter plate (34) near the heating mechanism (2). A through groove cover (32) is rotatably installed at the annular groove of the rotating groove ring (36). The outer side of the through groove cover (32) has a through groove. The through groove cover (32) is located outside the inner retaining ring (38). There is a gap between the through groove cover (32) and the inner retaining ring (38).

2. The PVC calendered film recycled material extrusion molding machine according to claim 1, characterized in that: The through-slot cover (32) has a raised conical surface on the side near the heating mechanism (2), and an inner turntable (33) is fixedly installed on the inner wall of the through-slot cover (32). The inner turntable (33) has an annular groove on the side near the heating mechanism (2). An inner guide ring (37) is fixedly installed on the side of the through groove cover (32) near the filter disc (34). The inner guide ring (37) is located outside the through groove of the through groove cover (32), and the end of the inner guide ring (37) away from the through groove cover (32) is inclined inward. There is a gap between the inner guide ring (37) and the inner retaining ring (38). The side of the inner retaining ring (38) near the inner guide ring (37) is a slope.

3. The PVC calendered film recycled material extrusion molding machine according to claim 2, characterized in that: A circular groove is provided at the center of the outer side of the inner turntable (33), and a shaft top sleeve (35) is fixedly installed at the center of the filter disc (34) near the heating mechanism (2). A conical groove is provided on the side of the shaft top sleeve (35) near the heating mechanism (2).

4. The PVC calendered film recycled material extrusion molding machine according to claim 3, characterized in that: The heating mechanism (2) includes an outer cover (21), an inner cover (24) is fixedly installed on the inner wall of the outer cover (21), there is a gap between the inner cover (24) and the outer cover (21), a heating cylinder one (25) and a heating cylinder two (26) are fixedly installed between the inner cover (24) and the outer cover (21), the heating cylinder one (25) is close to the die head mechanism (4), a feed groove (22) is fixedly installed on the top of the outer cover (21) near the motor (5), and an end sealing plate (23) is fixedly installed at the end of the outer cover (21) near the motor (5).

5. The PVC calendered film recycled material extrusion molding machine according to claim 4, characterized in that: A front sealing plate (27) and a rear sealing plate (28) are fixedly installed on the inner wall of the outer casing (21) near the motor (5). The rear sealing plate (28) is located on the side of the front sealing plate (27) near the motor (5), and there is a gap between the rear sealing plate (28) and the front sealing plate (27). A drive shaft (29) is rotatably installed on the inner wall of the front sealing plate (27).

6. The PVC calendered film recycled material extrusion molding machine according to claim 5, characterized in that: The drive shaft (29) passes through the rear sealing plate (28) at one end near the motor (5) and extends to the other side thereon. The drive shaft (29) at one end near the motor (5) is fixedly connected to the output shaft of the motor (5) by a coupling. A fixing cylinder (211) is fixedly installed on the outside of the drive shaft (29).

7. The PVC calendered film recycled material extrusion molding machine according to claim 6, characterized in that: A screw conveyor plate (212) is fixedly installed on the outside of the fixed cylinder (211). The width of the screw conveyor plate (212) is adapted to the inner diameter of the inner cover cylinder (24). A convex ring is provided at the end of the fixed cylinder (211) away from the motor (5), and the fixed cylinder (211) is adapted to rotate with the annular groove of the inner turntable (33) through the convex ring.

8. The PVC calendered film recycled material extrusion molding machine according to claim 7, characterized in that: The inner wall of the inner cover (24) is fixedly installed with a spiral protrusion (210). The spiral protrusion (210) is evenly installed along the center position of the inner cover (24), and the side of the spiral protrusion (210) away from the inner cover (24) is a raised arc surface. The arc surface of the spiral protrusion (210) contacts the outer side of the auger plate (212). The spiral protrusion (210) is made of heat-conducting metal material. The spiral protrusion (210) is located inside the heating cylinder (26).

9. The PVC calendered film recycled material extrusion molding machine according to claim 8, characterized in that: The die head mechanism (4) includes a connecting cylinder (41), which is fixedly installed on the outside of the connecting plate (31), and an extrusion cylinder (42) is fixedly installed on the outside of the connecting cylinder (41). The inner diameter of the extrusion cylinder (42) gradually decreases as it moves away from the connecting cylinder (41), and a sealing plate (45) is fixedly installed at the end of the extrusion cylinder (42) away from the connecting cylinder (41).

10. A PVC calendered film recycled material extrusion molding machine according to claim 9, characterized in that: An extrusion tube (43) is fixedly installed on the outer side of the sealing disc (45). The upper and lower sides of the inner wall of the extrusion tube (43) near the end of the sealing disc (45) are both inclined surfaces. Arc-shaped protrusions (44) are fixedly installed on the inclined surfaces of the inner wall of the extrusion tube (43). The arc-shaped protrusions (44) are evenly installed on the inclined surfaces of the inner wall of the extrusion tube (43).

Images