Bio-based degradable environment-friendly plastic cup processing device

Abstract

The invention relates to the technical field of plastic processing, and particularly discloses a bio-based degradable environment-friendly plastic cup processing device which comprises a machine body, a feeding mechanism is fixedly installed at one end of the machine body, the machine body comprises a charging barrel, a male die is fixedly installed at the front end of the charging barrel, an injection molding head is arranged at the front end of the male die, and a female die shell is installed at the other end of the machine body; an injection molding cavity corresponding to the injection molding head is formed in the female die shell. According to the bio-based degradable environment-friendly plastic cup processing device, through the design of the vortex-shaped pipe and the conical vortex ring pipe, the temperature is accurately controlled, the plastic fluidity and mold cooling are optimized, injection molding defects are avoided, cooling liquid efficiently flows among the conversion tanks through the four circulating pipelines, heat exchange is achieved, the ideal temperature of the injection molding head and the mold is kept, and the service life of the injection molding head is prolonged. According to the device, the injection molding process is optimized, energy waste is reduced, bio-based degradable environment-friendly plastic is adopted, the green production concept is met, and the environmental influence is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of plastic processing, and in particular to a bio-based degradable and environmentally friendly plastic cup processing device. Background Art

[0002] Injection molding is a common plastic processing technology, which is widely used in the production of various plastic products. Through injection molding, plastic products with complex shapes and high precision can be manufactured. The main process of injection molding is to heat and melt the plastic particles, and then inject them into the mold under high pressure. After cooling, they are solidified and formed. Then the product is taken out of the mold to complete the production. With the increasing severity of environmental problems, especially plastic pollution, bio-based degradable plastics have gradually become an important choice to replace traditional petroleum-based plastics, especially in the fields of disposable tableware and packaging materials. Bio-based degradable and environmentally friendly plastic cups are made of bio-based raw materials and have degradable properties. Plastic cups are designed to reduce the impact of traditional plastics on the environment.

[0003] The fluidity of existing bio-based plastics (such as polylactic acid PLA, polyhydroxyalkanoate PHA, etc.) is usually poor, especially in the case of high viscosity, which makes it impossible for the plastic to flow smoothly to various parts of the mold during injection molding, resulting in quality problems of the molded product, such as incomplete mold filling or bubbles, defects, etc. Many bio-based plastics have poor thermal stability and are prone to thermal degradation in high temperature environments, resulting in the breakage of the molecular chain of the plastic, the generation of gas or premature degradation, affecting the quality and processing effect of the plastic, and causing bubbles, cracks, discoloration or decreased mechanical properties on the surface of the product. Therefore, the present invention proposes a bio-based degradable and environmentally friendly plastic cup processing device to solve the problems mentioned in the above background technology. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a bio-based degradable and environmentally friendly plastic cup processing device.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A bio-based degradable and environmentally friendly plastic cup processing device comprises a body, a feeding mechanism is fixedly installed at one end of the body, the body comprises a barrel, a convex mold is fixedly installed at the front end of the barrel, an injection head is arranged at the front end of the convex mold, a screw is arranged inside the barrel, the screw is used to push the material and plasticize the plastic material, the raw material is pushed into the heating zone by rotating, and the raw material is heated to a molten state by friction, and the mixing and plasticization of the material are completed at the same time;

[0007] A female mold shell is installed at the other end of the machine body, and an injection cavity corresponding to the injection head is arranged inside the female mold shell. The machine body also includes a hydraulic and electric mold locking device, the hydraulic device is used to push or pull the male mold into the female mold shell, and the electric mold locking device is used to ensure that the mold is always in a closed state during the injection process;

[0008] The left and right sides of the female mold shell are respectively provided with conversion tank one and conversion tank two, the inside of the male mold is provided with a vortex tube, the vortex tube is located at the inlet section of the injection head, and the vortex tube surrounds the periphery of the injection head, and the inside of the female mold shell is provided with a conical vortex tube, and the conical vortex tube surrounds the periphery of the injection cavity of the female mold shell.

[0009] Preferably, the conversion tank 1 and the conversion tank 2 both include a static chamber and a storage chamber, the static chamber is used to store the newly injected coolant, and the storage chamber is used to retain the coolant that is about to flow out.

[0010] Preferably, one side of the conversion tank 2 is connected to a circulation pipe 1, and the other side of the conversion tank 2 is connected to a circulation pipe 2, the outer end of the circulation pipe 1 is connected to the outlet end of the conical vortex tube, and the inner end of the circulation pipe 1 is connected to a pump body installed on the conversion tank 2.

[0011] Preferably, the outer end of the circulation pipe 2 is connected to the inlet end of the vortex pipe, and solenoid valves are provided on the circulation pipe 1 and the circulation pipe 2, and the inner end of the circulation pipe 1 is connected to the static chamber inside the conversion tank 2, and the inner end of the circulation pipe 2 is connected to the storage chamber inside the conversion tank 2.

[0012] Preferably, one side of the conversion tank one is connected to a circulation pipe three, and the other side of the conversion tank one is connected to a circulation pipe four, the outer end of the circulation pipe three is connected to the inlet end of the conical vortex tube, and the outer end of the circulation pipe four is connected to the outlet end of the vortex tube, and the inner end of the circulation pipe three is connected to a pump body installed on the conversion tank one.

[0013] Preferably, solenoid valves are installed on the circulation pipe three and the circulation pipe four, the inner end of the circulation pipe four is connected to the static chamber inside the conversion tank one, and the inner end of the circulation pipe three is connected to the storage chamber inside the conversion tank one.

[0014] Preferably, a heat sink is installed on the upper part of the conversion tank 1, the inner end of the heat sink is located in the static cavity of the conversion tank 1, and a fan is installed outside the heat sink.

[0015] Preferably, the internal volumes of conversion tank one and conversion tank two are the same, and the volumes of the static chamber and the storage chamber are the same. The coolant circuit composed of two static chambers, two storage chambers, four circulation tubes, a vortex tube and a conical vortex tube includes four groups of coolant, each group of coolant has the same volume, and the volume of each group of coolant is smaller than that of the static chamber, the storage chamber, the vortex tube and the conical vortex tube, and the internal volumes of the vortex tube and the conical vortex tube are the same.

[0016] Preferably, the body also includes an electrical control and sensor system, the sensor system includes temperature, pressure, flow rate and displacement sensors, and the electrical control system is responsible for the automated operation of the entire device, including real-time monitoring and adjustment of temperature, pressure, injection speed, displacement parameters, and switching of the pump body and solenoid valve.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The bio-based degradable and environmentally friendly plastic cup processing device of the present invention optimizes the fluidity of the plastic and the cooling process of the mold through precise temperature control. The device increases the temperature of the injection molding part and reduces the mold temperature respectively through the design of the vortex tube and the conical vortex tube. During the injection molding process, the vortex tube heats the coolant to ensure that the temperature of the injection head area is appropriate, which helps the smooth flow of the molten plastic, while the conical vortex tube quickly takes away the heat from the mold surface to accelerate the cooling and solidification of the molded part. This temperature regulation method effectively ensures the fluidity of the molten plastic and avoids injection defects caused by overcooling or overheating of the plastic.

[0019] 2. The coolant circuit of the present invention is designed with four circulation pipes. The coolant circulates between the conversion tank 1 and the conversion tank 2 to achieve effective heat exchange. The coolant first flows into the static chamber and enters the vortex tube and the conical vortex tube respectively under the control of the solenoid valve and the pump body. The vortex tube heats the coolant to promote the flow of plastic, while the conical vortex tube quickly reduces the temperature of the mold to help plastic molding. The coolant flow path, temperature regulation and heat exchange process of the entire system are precisely designed to keep the temperature of each part within the ideal range, thereby achieving an optimized injection molding effect;

[0020] 3. The present invention further enhances the heat dissipation capacity of the cooling system through heat sinks and fans, helps the coolant maintain a low temperature during the circulation process, and improves the efficiency of the system. The hydraulic and electric clamping devices ensure the stability of the mold during the injection molding process and avoid production problems caused by loose molds or abnormal mold opening. Through these precise temperature management and equipment control, the device not only improves the stability of the injection molding process, but also fully considers energy conservation and environmental protection while improving production efficiency. The efficient circulation design of the coolant circuit reduces energy waste and improves energy utilization efficiency. The use of bio-based degradable and environmentally friendly plastics as raw materials is in line with the concept of green production and reduces the negative impact on the environment during the production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of the structure of a bio-based degradable environmentally friendly plastic cup processing device proposed by the present invention Figure 1 ;

[0022] Figure 2A schematic diagram of the structure of a bio-based degradable environmentally friendly plastic cup processing device proposed by the present invention Figure 2 ;

[0023] Figure 3 This is a front cross-sectional structural schematic diagram of a male mold in a bio-based degradable and environmentally friendly plastic cup processing device proposed by the present invention;

[0024] Figure 4 A schematic diagram of the side cross-sectional structure of a cavity mold in a bio-based degradable and environmentally friendly plastic cup processing device proposed by the present invention;

[0025] Figure 5 This is a schematic diagram of the internal structure of two conversion tanks in a bio-based degradable and environmentally friendly plastic cup processing device proposed by the present invention;

[0026] Figure 6 This is a schematic diagram of the heat exchange principle flow of a bio-based degradable and environmentally friendly plastic cup processing device proposed by the present invention.

[0027] In the figure: 1. machine body; 2. feeding mechanism; 3. punch; 4. die shell; 5. injection head; 6. conversion tank one; 7. heat sink; 8. fan; 9. conversion tank two; 10. circulation pipe one; 11. circulation pipe two; 12. vortex pipe; 13. injection cavity; 14. conical vortex pipe; 15. circulation pipe three; 16. circulation pipe four. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] Reference Figure 1-6 , a bio-based degradable and environmentally friendly plastic cup processing device, including a body 1, a feeding mechanism 2 is fixedly installed at one end of the body 1, the body 1 includes a barrel, a punch 3 is fixedly installed at the front end of the barrel, an injection head 5 is arranged at the front end of the punch 3, a screw is arranged inside the barrel, the screw is used to push the material and plasticize the plastic material, the raw material is pushed into the heating zone by rotation, and it is heated to a molten state by friction, and the mixing and plasticization of the material are completed at the same time, the barrel is a place to hold plastic particles and push the material through the screw, it cooperates with the screw to play the role of heating and pushing the material, there is usually a heater around the barrel, the plastic in the barrel is heated to a temperature suitable for injection by the heater, the plastic particles are heated to a molten state through the screw, and a uniform melt is formed, the screw pushes the molten plastic forward, and the nozzle injects the plastic into the mold cavity;

[0030] Furthermore, referring to Figure 1 , 2The other end of the machine body 1 is provided with a die housing 4, and an injection cavity 13 corresponding to the injection head 5 is arranged inside the die housing 4. The machine body 1 also includes a hydraulic and electric mold locking device. The hydraulic device is used to push or pull out the punch 3 in the die housing 4, and the electric mold locking device is used to ensure that the mold is always in a closed state during the injection process. Before the injection starts, the pressing system first presses the mold to ensure that the mold will not open during the injection process. After the molded part is cooled and solidified, the mold is opened and the molded part is pushed out;

[0031] Furthermore, referring to Figure 3-6 The left and right sides of the die shell 4 are respectively provided with a conversion tank 1 6 and a conversion tank 2 9, a vortex tube 12 is provided inside the punch 3, the vortex tube 12 is located at the inlet section of the injection head 5, and the vortex tube 12 surrounds the periphery of the injection head 5, a conical vortex tube 14 is provided inside the die shell 4, and the conical vortex tube 14 surrounds the periphery of the injection cavity 13 of the die shell 4, the conversion tank 1 6 and the conversion tank 2 9 both include a static cavity and a storage cavity, the static cavity is used for storing the newly flushed coolant, and the storage cavity is used for retaining the coolant that is about to flow out, a circulation tube 10 is connected to one side of the conversion tank 2 9, and a circulation tube 2 11 is connected to the other side of the conversion tank 2 9, and the outer end of the circulation tube 10 is connected to the outlet of the conical vortex tube 14 The ends are connected, and the inner end of the circulation pipe 10 is connected to the pump body installed on the conversion tank 2 9, the outer end of the circulation pipe 2 11 is connected to the inlet end of the vortex tube 12, and the circulation pipe 10 and the circulation pipe 2 11 are both provided with electromagnetic valves, and the inner end of the circulation pipe 10 is communicated with the static cavity inside the conversion tank 2 9, and the inner end of the circulation pipe 2 11 is communicated with the storage cavity inside the conversion tank 2 9, and the coolant circulates between the conversion tank 1 6 and the conversion tank 2 9 through the circulation pipelines in the system (circulation pipes 10, 2 11, 3 15, 4 16), and the coolant first flows into the static cavity, and then is sent to the vortex tube 12 for heat collection or the conical vortex tube 14 for cooling through the control of the pump body and the electromagnetic valve;

[0032] Furthermore, a circulation pipe three 15 is connected to one side of the conversion tank 6, and a circulation pipe four 16 is connected to the other side of the conversion tank 6. The outer end of the circulation pipe three 15 is connected to the inlet end of the conical vortex tube 14, and the outer end of the circulation pipe four 16 is connected to the outlet end of the vortex tube 12, and the inner end of the circulation pipe three 15 is connected to the pump body installed on the conversion tank 6. Solenoid valves are installed on the circulation pipe three 15 and the circulation pipe four 16. The inner end of the circulation pipe four 16 is connected to the static cavity inside the conversion tank 6, and the inner end of the circulation pipe three 15 is connected to the storage cavity inside the conversion tank 6. A heat sink 7 is installed on the upper part of the conversion tank 6. The inner end of the heat sink 7 is located in the static cavity of the conversion tank 6. A fan 8 is installed outside the heat sink 7. The heat sink 7 and the fan 8 further help to dissipate heat. The internal volumes of the conversion tank 6 and the conversion tank 2 9 are the same, and the volumes of the static cavity and the storage cavity are the same. Two static cavities, two storage cavities, four circulation pipes, the vortex tube 12 and The coolant circuit composed of the conical vortex tube 14 includes four groups of coolant, each of which has the same volume, and the volume of each group of coolant is smaller than the static chamber, the storage chamber, the vortex tube 12 and the conical vortex tube 14, and the internal volume of the vortex tube 12 is the same as that of the conical vortex tube 14. The coolant in the vortex tube 12 and the conical vortex tube 14 surrounds the periphery of the injection head 5 and the die shell 4 respectively, exchanges heat with the mold surface, and absorbs the heat generated during the injection molding process. The coolant flows in the system and is eventually brought back to the storage chamber in the conversion tank and is ready to re-enter the circulation. The coolant cooled by the conversion tank 6 enters the conical vortex tube 14 to quickly cool the molten plastic injected into the injection cavity 13, helping molding and avoiding thermal fusion. After heating, the coolant flows to the vortex tube 12 of the punch 3 through the circulation loop to assist in heat collection, so that the molten plastic passing through the punch 3 and entering the injection head 5 is further heated to facilitate the flow of the melt.

[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A bio-based degradable and environmentally friendly plastic cup processing device, comprising a body (1), characterized in that: A feeding mechanism (2) is fixedly mounted on one end of the machine body (1), the machine body (1) comprises a barrel, a punch (3) is fixedly mounted on the front end of the barrel, an injection head (5) is arranged on the front end of the punch (3), and a screw is arranged inside the barrel, the screw is used for pushing the material and plasticizing the plastic material; A die housing (4) is installed at the other end of the machine body (1), and an injection cavity (13) corresponding to the injection head (5) is arranged inside the die housing (4). The machine body (1) also includes a hydraulic and electric mold locking device, the hydraulic device is used to push or pull the punch (3) into the die housing (4), and the electric mold locking device is used to ensure that the mold is always in a closed state during the injection molding process; The die shell (4) is provided with a conversion tank 1 (6) and a conversion tank 2 (9) on the left and right sides respectively; the punch (3) is provided with a vortex tube (12) inside; the vortex tube (12) is located at the inlet section of the injection head (5), and the vortex tube (12) surrounds the periphery of the injection head (5); the die shell (4) is provided with a conical vortex tube (14) inside; the conical vortex tube (14) surrounds the periphery of the injection cavity (13) of the die shell (4).

2. The bio-based degradable and environmentally friendly plastic cup processing device according to claim 1 is characterized in that: The conversion tank 1 (6) and the conversion tank 2 (9) both include a static chamber and a storage chamber. The static chamber is used to store the newly injected coolant, and the storage chamber is used to retain the coolant that is about to flow out.

3. The bio-based degradable and environmentally friendly plastic cup processing device according to claim 1 is characterized in that: One side of the conversion tank 2 (9) is connected to a circulation pipe 1 (10), and the other side of the conversion tank 2 (9) is connected to a circulation pipe 2 (11); the outer end of the circulation pipe 1 (10) is connected to the outlet end of the conical vortex tube (14), and the inner end of the circulation pipe 1 (10) is connected to a pump body installed on the conversion tank 2 (9).

4. The bio-based degradable and environmentally friendly plastic cup processing device according to claim 3 is characterized in that: The outer end of the circulation pipe 2 (11) is connected to the inlet end of the vortex pipe (12), and both the circulation pipe 1 (10) and the circulation pipe 2 (11) are provided with solenoid valves, and the inner end of the circulation pipe 1 (10) is connected to the static chamber inside the conversion tank 2 (9), and the inner end of the circulation pipe 2 (11) is connected to the storage chamber inside the conversion tank 2 (9).

5. The bio-based degradable and environmentally friendly plastic cup processing device according to claim 1 is characterized in that: One side of the conversion tank one (6) is connected to a circulation pipe three (15), and the other side of the conversion tank one (6) is connected to a circulation pipe four (16), the outer end of the circulation pipe three (15) is connected to the inlet end of the conical vortex tube (14), and the outer end of the circulation pipe four (16) is connected to the outlet end of the vortex tube (12), and the inner end of the circulation pipe three (15) is connected to a pump body installed on the conversion tank one (6).

6. The bio-based degradable and environmentally friendly plastic cup processing device according to claim 5 is characterized in that: Solenoid valves are installed on the circulation pipe three (15) and the circulation pipe four (16). The inner end of the circulation pipe four (16) is connected to the static chamber inside the conversion tank one (6), and the inner end of the circulation pipe three (15) is connected to the storage chamber inside the conversion tank one (6).

7. The bio-based degradable and environmentally friendly plastic cup processing device according to claim 1 is characterized in that: A heat sink (7) is installed on the upper part of the conversion tank (6), the inner end of the heat sink (7) is located in the static cavity of the conversion tank (6), and a fan (8) is installed outside the heat sink (7).

8. The bio-based degradable and environmentally friendly plastic cup processing device according to claim 1 is characterized in that: The conversion tank 1 (6) and the conversion tank 2 (9) have the same internal volume, and the static chamber and the storage chamber have the same volume. The cooling liquid circuit composed of two static chambers, two storage chambers, four circulation tubes, a vortex tube (12) and a conical vortex tube (14) includes four groups of cooling liquid, each group of cooling liquid has the same volume, and the volume of each group of cooling liquid is smaller than that of the static chamber, the storage chamber, the vortex tube (12) and the conical vortex tube (14), and the internal volume of the vortex tube (12) and the conical vortex tube (14) is the same.

9. The bio-based degradable and environmentally friendly plastic cup processing device according to claim 1, characterized in that: The machine body (1) also includes an electrical control and sensor system, the sensor system includes temperature, pressure, flow rate and displacement sensors, and the electrical control system is responsible for the automated operation of the entire device, including real-time monitoring and adjustment of temperature, pressure, injection speed, displacement parameters, and switching of the pump body and solenoid valve.

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