PVC (polyvinyl chloride) plastic particle processing and forming equipment

Abstract

The utility model relates to the technical field of plastic processing and forming, in particular to PVC (polyvinyl chloride) plastic particle processing and forming equipment which is accurate in temperature control, high in efficiency and simplified in operation. Comprising a workbench, a feeding barrel, an extrusion molding barrel, a cutting assembly and a heating assembly are arranged on the workbench, a feeding hopper is arranged at the feeding end of the feeding barrel, the discharging end of the feeding barrel is connected with the extrusion molding barrel through a feeding pipe, an auger feeding piece is arranged in the feeding barrel, and a molding plate is arranged at one end of the extrusion molding barrel; the cut-off assembly is arranged on the side, close to the forming plate, of the extrusion forming barrel. The heating assembly comprises a control unit, a temperature sensor and a heating wire, the temperature sensor is arranged in the feeding barrel, the heating wire is wound on the outer surface of the feeding barrel, the signal input end of the control unit is electrically connected with the signal output end of the temperature sensor, and the signal output end of the control unit is electrically connected with the signal input end of the heating wire.

Description

Technical Field

[0001] This utility model relates to the technical field of plastic processing and molding, and in particular to a PVC plastic particle processing and molding equipment. Background Technology

[0002] PVC plastic pellets, short for polyvinyl chloride (PVC) plastic pellets, are granular raw materials formed from PVC resin through processing. These pellets are the basic material for manufacturing various PVC products and are widely used in construction, packaging, household goods, and many other fields. PVC is a thermoplastic with good chemical resistance, electrical insulation, and mechanical strength. In the production and processing of PVC plastic pellets, molding equipment is required. The material is propelled forward by the thrust of a screw and melted in a heating section. At the outlet, the material passes through a mold to form a continuous strip, which then enters a cooling system for rapid cooling and solidification. The cooled strip is then cut into pellets of a certain size, i.e., PVC plastic pellets.

[0003] Existing molding equipment has poor temperature control over raw materials during operation. If the material stays in the heating section for too long, the temperature may rise above the ideal range, affecting the physical properties of the PVC material itself and resulting in substandard product quality. Insufficient heating, on the other hand, will prevent the PVC from melting completely, leading to uneven mixing of raw materials and affecting the quality and consistency of the resulting PVC plastic particles. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a PVC plastic particle processing and molding equipment with precise temperature control, improved efficiency, and simplified operation.

[0005] This utility model discloses a PVC plastic particle processing and molding equipment, including a workbench. The workbench is equipped with a feeding hopper, an extrusion molding hopper, a cutting assembly, and a heating assembly. The feeding hopper has a feeding hopper at its inlet end and a feeding pipe connecting its outlet end to the extrusion molding hopper. An auger feeder is installed inside the feeding hopper. A molding plate is installed at one end of the extrusion molding hopper. The cutting assembly is located on the side of the extrusion molding hopper near the molding plate. The heating assembly includes a control unit, a temperature sensor, and a heating wire. The temperature sensor is located inside the feeding hopper, and the heating wire is wound around the outer surface of the feeding hopper. The signal input terminal of the control unit is electrically connected to the signal output terminal of the temperature sensor, and the signal output terminal of the control unit is electrically connected to the signal input terminal of the heating wire.

[0006] Furthermore, the feeding hopper is provided with a steam venting component for discharging water vapor at one end near the extrusion molding hopper. The steam venting component includes a collection hood, an exhaust pipe, and a drain outlet. The collection hood is located on the outer wall of the feeding hopper and is connected to the feeding hopper through a connection port. A filter screen is provided inside the connection port. The exhaust pipe is located on the side of the collection hood away from the feeding hopper. The drain outlet is located at the bottom of the collection hood. A partition is provided inside the collection hood to divide the collection hood into two chambers. A flow channel is provided between the partition and the drain outlet.

[0007] Furthermore, the exhaust pipe is equipped with multiple layers of purification mesh.

[0008] Furthermore, a heat insulation cover is provided on the outside of the feeding hopper, and a gap is provided between the heat insulation cover and the feeding hopper, with the heating wire disposed within the gap.

[0009] Furthermore, the auger feeding component includes a rotating rod disposed inside the feeding hopper, a spiral fan blade disposed outside the rotating rod that cooperates with the inner wall of the feeding hopper, and a drive motor disposed outside the feeding hopper to drive the rotating rod to rotate.

[0010] Furthermore, the cutting assembly includes a bracket, in which a movable seat and a fixed seat are disposed. The movable seat is disposed above the fixed seat, and a tool holder is disposed at the bottom of the movable seat. A blade is disposed at the bottom of the tool holder. The fixed seat is provided with a clearance hole that mates with the blade. The bracket is provided with a cylinder that drives the movable seat to move toward or away from the fixed seat.

[0011] Furthermore, guide rods are symmetrically arranged inside the bracket, and a through hole is provided on the movable seat. A guide sleeve that slides and engages with the guide rod is provided inside the through hole.

[0012] Furthermore, the workbench is provided with a receiving chamber, and the workbench is provided with a receiving port communicating with the receiving chamber. The receiving port is located below the cutting assembly. A collection box is slidably connected inside the receiving chamber, and a handle is provided on the outer wall of the receiving port.

[0013] Furthermore, a surrounding panel is provided on the receiving port, and a guide plate is provided inside the surrounding panel. One end of the guide plate is fixedly connected to the side of the surrounding panel near the extrusion molding barrel, and the other end is inclined toward the collection box.

[0014] Furthermore, the control unit includes a PLC control circuit board.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] Temperature sensors monitor temperature changes within the feeding hopper in real time and transmit the signals to the control unit. The control unit adjusts the heating wire's operation based on the set temperature value, achieving precise temperature control of the material. More accurate temperature control prevents production stoppages or increased waste caused by excessively high or low temperatures, thus improving overall production efficiency. Stable temperature control helps maintain the physical properties of PVC materials during processing, ensuring the consistency and quality stability of the final product. Precise temperature control reduces unnecessary heat loss and improves energy utilization efficiency, achieving energy conservation and emission reduction. Automated temperature control reduces the workload of operators, simplifies operating procedures, and improves the automation level of the production line. Reasonable temperature management reduces the risk of damage to internal parts such as the feeding hopper due to overheating or uneven heating, helping to extend the equipment's service life. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the cutting assembly of this utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the feeding hopper of this utility model;

[0021] Figure 4 This is a structural schematic diagram of the exhaust component of this utility model;

[0022] The following are labels in the attached diagram: 1. Workbench; 2. Feeding bucket; 3. Extrusion molding bucket; 4. Cutting assembly; 5. Feed hopper; 6. Feed pipe; 7. Molding plate; 8. Heating wire; 9. Exhaust component; 10. Collection hood; 11. Exhaust pipe; 12. Drain port; 13. Connection port; 14. Partition plate; 15. Flow channel; 16. Purification screen; 17. Heat insulation cover; 18. Rotating rod; 19. Spiral fan blade; 20. Drive motor; 21. Bracket; 22. Moving seat; 23. Fixed seat; 24. Tool holder; 25. Blade; 26. Clearance hole; 27. Cylinder; 28. Guide rod; 29. ​​Receiving port; 30. Collection box; 31. Handle; 32. Enclosure; 33. Guide plate. Detailed Implementation

[0023] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0024] like Figures 1 to 4As shown, the PVC plastic particle processing and molding equipment of this utility model includes a workbench 1, on which a feeding hopper 2, an extrusion molding hopper 3, a cutting assembly 4, and a heating assembly are arranged. The feeding end of the feeding hopper 2 is provided with a feeding hopper 5, and the discharging end of the feeding hopper 2 is connected to the extrusion molding hopper 3 through a feeding pipe 6. A screw conveyor is provided inside the feeding hopper 2. A molding plate 7 is provided at one end of the extrusion molding hopper 3. The cutting assembly 4 is located on the side of the extrusion molding hopper 3 near the molding plate 7. The heating assembly includes a control unit, a temperature sensor, and a heating wire 8. The temperature sensor is located inside the feeding hopper 2, and the heating wire 8 is wound around the outer surface of the feeding hopper 2. The signal input terminal of the control unit is electrically connected to the signal output terminal of the temperature sensor, and the signal output terminal of the control unit is electrically connected to the signal input terminal of the heating wire 8.

[0025] Temperature sensors monitor temperature changes within the feeding hopper 2 in real time and transmit the signals to the control unit. The control unit adjusts the operating state of the heating wire 8 according to the set temperature value, thereby achieving precise temperature control of the material. More accurate temperature control avoids production stoppages or increased waste caused by excessively high or low temperatures, thus improving overall production efficiency. Stable temperature control helps maintain the physical properties of PVC materials during processing, ensuring the consistency and quality stability of the final product. Precise temperature control reduces unnecessary heat loss and improves energy utilization efficiency, achieving energy conservation and emission reduction. Automated temperature control reduces the workload of operators, simplifies operating procedures, and improves the automation level of the production line. Reasonable temperature management reduces the risk of damage to internal parts such as the feeding hopper 2 due to overheating or uneven heating, helping to extend the equipment's service life.

[0026] A steam vent 9 for discharging water vapor is provided at one end of the feeding hopper 2 near the extrusion molding hopper 3. The steam vent 9 includes a collection hood 10, an exhaust pipe 11, and a drain outlet 12. The collection hood 10 is located on the outer wall of the feeding hopper 2 and is connected to the feeding hopper 2 through a connection port 13. A filter screen is installed inside the connection port 13. The exhaust pipe 11 is located on the side of the collection hood 10 away from the feeding hopper 2. The drain outlet 12 is located at the bottom of the collection hood 10. A partition 14 is provided inside the collection hood 10 to divide the collection hood 10 into two chambers. A flow channel 15 is provided between the partition 14 and the drain outlet 12. The steam vent 9 can effectively... The system collects and discharges the water vapor generated during the heating process in the feeding hopper 2, preventing the water vapor from condensing into water droplets and flowing back into the material, thus affecting the dryness of the material and the quality of subsequent processing. The filter screen can intercept solid impurities, preventing them from entering the exhaust system with the water vapor, protecting the exhaust pipe 11 from blockage, and also preventing impurities from polluting the environment. The partition 14 divides the collection hood 10 into two chambers, and the flow channel 15 allows gas to be discharged through the exhaust pipe 11 while the liquid remains, achieving gas-liquid separation and further purifying the discharged gas. Timely removal of water vapor can reduce the pressure buildup inside the equipment, improve the safety of equipment operation, and prevent accidents.

[0027] As a preferred embodiment of the above embodiment, the exhaust pipe 11 is provided with a multi-layer purification mesh 16; the multi-layer purification mesh 16 can effectively intercept and adsorb fine particulate matter and harmful substances in the exhaust gas, ensuring that the discharged gas is cleaner and reducing the impact on the environment; the purification mesh 16 is easy to disassemble and clean, and convenient for regular maintenance to maintain its good filtration effect.

[0028] As a preferred embodiment of the above embodiment, a heat insulation cover 17 is provided on the outside of the feeding hopper 2, and a gap is provided between the heat insulation cover 17 and the feeding hopper 2, with the heating wire 8 disposed in the gap; a heat insulation layer is formed by the gap between the heat insulation cover 17 and the feeding hopper 2, reducing heat loss and thus maintaining a constant temperature of the material inside the feeding hopper 2; since the heat insulation cover 17 can reduce heat conduction loss to the outside, the working efficiency of the heating wire 8 is improved, reducing energy consumption and achieving the purpose of energy saving; the heat insulation cover 17 can prevent operators from directly contacting the high-temperature feeding hopper 2, improving the safety of equipment use and preventing burn accidents; the heat insulation cover 17 is easy to disassemble and install, facilitating daily maintenance and inspection of the condition of the heating wire 8.

[0029] As a preferred embodiment of the above embodiment, the auger feeder includes a rotating rod 18 disposed inside the feeding hopper 2, a spiral fan blade 19 disposed outside the rotating rod 18 and cooperating with the inner wall of the feeding hopper 2, and a drive motor 20 disposed outside the feeding hopper 2 to drive the rotating rod 18 to rotate; the auger feeder uniformly conveys the material to the extrusion molding hopper 3, ensuring a continuous supply of material; the drive motor 20 drives the rotating rod 18 to rotate, and the spiral fan blade 19 can efficiently push the material, improving the feeding speed and efficiency; the design of the spiral fan blade 19 can effectively prevent the material from clogging in the feeding hopper 2, ensuring that the material smoothly enters the extrusion molding hopper 3; the drive motor 20 can adjust the speed according to actual needs, thereby controlling the feeding speed, making the processing process more flexible and controllable.

[0030] As a preferred embodiment of the above, the cutting assembly 4 includes a bracket 21, within which a movable seat 22 and a fixed seat 23 are disposed. The movable seat 22 is positioned above the fixed seat 23, and a tool holder 24 is disposed at the bottom of the movable seat 22. A blade 25 is disposed at the bottom of the tool holder 24. The fixed seat 23 is provided with a clearance hole 26 that mates with the blade 25. The bracket 21 is provided with a cylinder 27 that drives the movable seat 22 to move toward or away from the fixed seat 23. The cylinder 27 drives the movable seat 22 to move up and down, achieving precise cutting of the extruded strip and ensuring uniform particle size. The design of the tool holder 24 facilitates the disassembly and replacement of the blade 25, simplifying daily maintenance and reducing repair costs. The clearance hole 26 on the fixed seat 23 ensures that the blade 25 only contacts the material at the cutting position, avoiding direct contact between the blade 25 and the fixed seat 23 and preventing damage, thus improving the safety of the equipment.

[0031] As a preferred embodiment of the above embodiment, guide rods 28 are symmetrically arranged inside the bracket 21, and a through hole is provided on the movable seat 22. A guide sleeve that slides and engages with the guide rods 28 is provided in the through hole. The engagement between the guide rods 28 and the guide sleeve ensures the straightness and stability of the movable seat 22 during its up-and-down movement, avoiding errors caused by offset during the cutting process. The symmetrically arranged guide rods 28 increase the rigidity of the movable seat 22, ensuring that it will not deform or shake during high-speed cutting, thus guaranteeing the consistency of the cutting.

[0032] As a preferred embodiment of the above embodiment, the workbench 1 is provided with a receiving chamber, and the workbench 1 is provided with a receiving port 29 communicating with the receiving chamber. The receiving port 29 is located below the cutting assembly 4. A collection box 30 is slidably connected inside the receiving chamber, and a handle 31 is provided on the outer wall of the receiving port 29. The receiving port 29 can automatically receive the cut PVC plastic particles, ensuring that the material falls directly into the collection box 30, reducing the need for manual intervention. Through the handle 31, the operator can easily pull out or push the collection box 30, making it convenient to use and replace the collection box 30.

[0033] As a preferred embodiment, the receiving port 29 is provided with a surrounding plate 32, and a guide plate 33 is provided inside the surrounding plate 32. One end of the guide plate 33 is fixedly connected to the side of the surrounding plate 32 near the extrusion molding barrel 3, and the other end is inclined toward the collection box 30. The surrounding plate 32 can prevent the cut PVC plastic particles from scattering outside the workbench 1 during the falling process, keeping the working environment clean. The design of the guide plate 33 allows the cut particles to slide into the collection box 30 along the inclined direction of the guide plate 33, ensuring that the particles can fall into the collection box 30 accurately and without error, avoiding omission or accumulation near the receiving port 29.

[0034] As a preferred embodiment of the above, the control unit includes a PLC control circuit board; the PLC control circuit board enables automated control of various components of the equipment, such as data acquisition from temperature sensors and start / stop control of the heating wire, making the equipment operation more intelligent; the PLC can precisely control the working state of the heating wire, and adjust the current of the heating wire in real time according to the set temperature value to ensure that the material temperature is always within the ideal range; the PLC has a fault diagnosis function, which can monitor the operating status of the equipment in real time, and can respond quickly and take corresponding measures when abnormalities occur, improving the reliability of the equipment; the PLC can record data during the operation of the equipment, such as temperature changes and fault alarms, which is convenient for later analysis and optimization of the production process.

[0035] This utility model discloses a PVC plastic particle processing and molding equipment. During operation, the control unit first sets the required processing parameters, such as temperature, feeding speed, and cutting frequency. Then, the drive motor 20 is started, causing the rotating rod 18 to rotate, which in turn starts the spiral fan blades 19, feeding the material from the feeding hopper 2 into the extrusion molding hopper 3. A temperature sensor detects the temperature inside the feeding hopper 2 and transmits the signal to the control unit. The control unit adjusts the working state of the heating wire 8 according to the set temperature to ensure the material reaches an ideal melting state in the heating section. The heating wire 8, installed in the gap between the heat insulation cover 17 and the feeding hopper 2, heats the material and maintains a stable temperature. The collection hood 10 in the exhaust component 9 collects the steam generated inside the feeding hopper 2. Water vapor enters the collection hood 10 through the inlet 13 and is filtered by the filter screen. The gas is discharged through the exhaust pipe 11, where the multi-layer purification screen 16 further purifies the exhaust gas. Liquid is discharged through the drain port 12. Material enters the extrusion molding barrel 3 through the feed pipe 6 and is formed into a continuous strip through the molding plate 7. The cylinder 27 in the cutting assembly 4 drives the moving seat 22 to move up and down along the guide rod 28. The moving seat 22 drives the tool holder 24 and the blade 25 to move down to cut the strip. The cut PVC plastic particles are guided by the guide plate 33 and slide into the collection box 30 through the receiving port 29. The collection box 30 can be easily pulled out using the handle 31 for emptying or replacement.

[0036] The PVC plastic particle processing and molding equipment of this utility model can be installed, connected or set up in a common mechanical way, and can be implemented as long as it can achieve its beneficial effect.

[0037] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A PVC plastic pellet processing and molding apparatus, characterized by, The utility model provides a kind of extrusion molding device, including workbench (1), the workbench (1) is provided with feeding barrel (2), extrusion molding barrel (3), cutting assembly (4) and heating assembly, the feeding end of feeding barrel (2) is provided with feeding hopper (5), the discharge end of feeding barrel (2) is connected with extrusion molding barrel (3) by feed pipe (6), feeding barrel (2) is provided with auger feeding piece, one end of extrusion molding barrel (3) is provided with forming plate (7), cutting assembly (4) is arranged in the side of extrusion molding barrel (3) close to forming plate (7);The heating assembly includes control unit, temperature sensor and heating wire (8), the temperature sensor is arranged in the inside of feeding barrel (2), the heating wire (8) is around the outer surface of feeding barrel (2), the signal input end of control unit is electrically connected with the signal output end of temperature sensor, the signal output end of control unit is electrically connected with the signal input end of heating wire (8).

2. The PVC plastic pellet processing and molding apparatus as claimed in claim 1, wherein, The end of the feeding barrel (2) close to the extrusion molding barrel (3) is provided with a steam discharge element (9) for discharging steam, the steam discharge element (9) includes a collection cover (10), an exhaust pipe (11) and a liquid discharge port (12), the collection cover (10) is arranged on the outer wall of the feeding barrel (2), the collection cover (10) is in communication with the feeding barrel (2) through a communication opening (13), a filter screen is arranged in the communication opening (13), the exhaust pipe (11) is arranged on the side of the collection cover (10) away from the feeding barrel (2), the liquid discharge port (12) is arranged on the bottom of the collection cover (10), a partition plate (14) is arranged inside the collection cover (10) to divide the collection cover (10) into two chambers, a flow passage (15) is arranged between the partition plate (14) and the liquid discharge port (12).

3. The PVC plastic pellet processing molding apparatus as claimed in claim 2, wherein, The exhaust pipe (11) is provided with multiple layers of purification screens (16).

4. The PVC plastic pellet processing molding apparatus as claimed in claim 1, wherein, The outside of the feeding barrel (2) is provided with a heat insulation cover (17), a gap is arranged between the heat insulation cover (17) and the feeding barrel (2), and the heating wire (8) is arranged in the gap.

5. The PVC plastic pellet processing and molding apparatus as claimed in claim 1, wherein, The auger feeding piece includes a rotating rod (18) arranged in the feeding barrel (2), the rotating rod (18) is provided with helical vanes (19) matched with the inner wall of the feeding barrel (2), and a drive motor (20) is arranged on the outside of the feeding barrel (2) to drive the rotating rod (18) to rotate.

6. The PVC plastic pellet processing molding apparatus as claimed in claim 1, wherein, The cutting assembly (4) includes a bracket (21), a moving seat (22) and a fixed seat (23) are arranged in the bracket (21), the moving seat (22) is arranged above the fixed seat (23), a cutter holder (24) is arranged at the bottom of the moving seat (22), a blade (25) is arranged at the bottom of the cutter holder (24), an avoidance hole (26) matched with the blade (25) is arranged on the fixed seat (23), and a pneumatic cylinder (27) is arranged on the bracket (21) to drive the moving seat (22) to move towards or away from the fixed seat (23).

7. The PVC plastic pellet processing molding apparatus as claimed in claim 6, wherein, Symmetrical guide rods (28) are arranged in the bracket (21), a through hole is arranged on the moving seat (22), and a guide sleeve is arranged in the through hole to slide with the guide rods (28).

8. The PVC plastic pellet processing and molding apparatus as claimed in claim 1, wherein, The workbench (1) is internally provided with a material collecting cavity, and a material collecting opening (29) in communication with the material collecting cavity is arranged on the workbench (1), the material collecting opening (29) is arranged below the cutting assembly (4), a collecting box (30) is slidably connected in the material collecting cavity, and a handle (31) is arranged on the outer wall of the material collecting opening (29).

9. The PVC plastic pellet processing molding apparatus as claimed in claim 8, wherein, A surrounding plate (32) is arranged around the material collecting opening (29), a guide plate (33) is arranged in the surrounding plate (32), one end of the guide plate (33) is fixedly connected to the side of the surrounding plate (32) close to the extrusion molding barrel (3), and the other end is inclined towards the collecting box (30).

10. The PVC plastic pellet processing and molding apparatus as claimed in claim 1, wherein, The control unit comprises a PLC control circuit board.

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