Extrusion device for manufacturing plastic packaging products

Abstract

The invention relates to the field of plastic product processing equipment, and discloses an extrusion device for manufacturing plastic packaging products, which comprises a workbench, a conveying pipeline is fixedly mounted above the workbench through a support, a die head is fixedly mounted at the tail end of the conveying pipeline, a main shaft is movably mounted in the conveying pipeline, and a plurality of extrusion heads are fixedly mounted in the main shaft. A vertical feeding pipe is fixedly mounted on the side, away from the die head, of the bottom end of the conveying pipeline, an arc-shaped feeding pipe is fixedly mounted on the side, close to the vertical feeding pipe, of the conveying pipeline, the tail end of the arc-shaped feeding pipe communicates with the interior of the vertical feeding pipe, and a first motor is fixedly mounted at the inner bottom of the workbench; and a movable shaft is fixedly mounted at the driving end of the first motor. The compression efficiency is improved by chopping the raw materials to accelerate plasticization, stacking and then feeding, the raw materials are uniform in temperature and proper in viscosity and are optimized to enter a die head state under the synergistic effect of cooling and a magnetic field, and the product quality and the production efficiency are improved.

Description

Technical Field

[0001] The invention relates to the field of plastic product processing equipment, in particular to an extrusion device for manufacturing plastic packaging products. Background Art

[0002] In today's plastic packaging products manufacturing industry, extrusion devices are core production equipment, and their performance is directly related to product quality, production efficiency and corporate economic benefits.

[0003] Traditional extrusion devices used in the manufacture of plastic packaging products have significant deficiencies in the raw material processing link. It is common to directly put the raw materials into the conveying pipeline for processing without pre-processing the raw materials. The raw material particles are uneven in size and shape, resulting in uneven heat transfer, slow plasticization speed and poor effect during the plasticization process. This not only greatly prolongs the processing time and increases energy consumption, but also affects product quality due to inconsistent plasticization, causing defects such as bubbles and uneven density in the finished product.

[0004] In the raw material conveying and compression stage, traditional devices mostly use a single uniform feeding method, where the vertical feed pipe conveys the raw material to the conveying pipeline at a uniform speed, which cannot meet the compression requirements of the subsequent compression auger. The raw material enters the compression stage loosely, the compression efficiency is low, and it is difficult to achieve the ideal compression ratio, which in turn affects the quality of the plastic melt and the molding effect, and reduces the physical properties of the product, such as strength and toughness.

[0005] When it comes to temperature control of plastic melt, traditional extrusion devices are even more incapable. Generally, the conveying pipeline is cooled only by simple cooling pipes, which is a single cooling method and has poor effect. The temperature distribution of the plastic melt is uneven during the conveying process, and the fluidity difference is large when entering the die head, resulting in uneven filling of the mold cavity, difficult to control the thickness of the product, and defects such as ripples and depressions on the surface, which seriously affect the appearance and dimensional accuracy of the product. Moreover, since it is impossible to accurately control the speed and flow rate of the plastic entering the die head, it is easy to cause problems such as jetting and eddy currents, further reducing product quality and increasing the defective rate. Summary of the invention

[0006] In view of the shortcomings of the prior art, the present invention provides an extrusion device for manufacturing plastic packaging products, which solves the problems of slow plasticization of raw materials, low compression efficiency, and poor product quality in traditional extrusion devices. The plasticization is accelerated by shredding the raw materials, the compression efficiency is improved by changing the feeding method, and the temperature is controlled by the cooling chamber and the magnetic ring to optimize the product molding effect.

[0007] To achieve the above objectives, the present invention is implemented through the following technical solutions: an extrusion device for manufacturing plastic packaging products, comprising a workbench, a conveying pipe is fixedly installed above the workbench through a bracket, a die head is fixedly installed at the end of the conveying pipe, a main shaft is movably installed inside the conveying pipe, a vertical feeding pipe is fixedly installed on the side of the bottom end of the conveying pipe away from the die head, an arc-shaped feeding pipe is fixedly installed on the side of the conveying pipe close to the vertical feeding pipe, and the end of the arc-shaped feeding pipe is connected to the inside of the vertical feeding pipe, a first motor is fixedly installed on the inner bottom of the workbench, and a movably driven motor is fixedly installed on the driving end of the first motor. A movable shaft, a rotating shaft is movably provided inside the vertical feeding pipe and the end of the rotating shaft extends to the inside of the workbench, an upward feeding auger is fixedly installed on the outer diameter of the rotating shaft located inside the vertical feeding pipe, a heat-conducting aluminum ring is movably installed on the outer diameter of one side of the conveying pipe close to the die head, a magnetic ring is movably provided on one side of the top of the workbench through a bearing mounting seat and the magnetic ring covers the heat-conducting aluminum ring inside, a cooling chamber is fixedly installed on one side of the conveying pipe close to the heat-conducting aluminum ring above the conveying pipe, a cooling bin is provided at the bottom of the cooling chamber, a short shaft is movably installed inside the cooling chamber, and the bottom end of the short shaft extends to the inside of the cooling bin and is fixedly installed with a cross brush plate.

[0008] Preferably, a first conveying auger is fixedly installed on the outer diameter of the side of the main shaft away from the die head, a compression auger is fixedly installed on the middle outer diameter of the main shaft, a second conveying auger is fixedly installed on the outer diameter of the side of the main shaft close to the die head, and an electric heater is fixedly installed at the top of the conveying pipe near the compression auger.

[0009] Preferably, a feeding hopper is fixedly installed on the top of the arc-shaped feeding tube, the end of the movable shaft extends to the outside of the workbench and is fixedly installed with a driving wheel, the end of the main shaft away from the die head passes through the inner wall of the conveying pipe and the interior of the arc-shaped feeding tube and is fixedly installed with a driven wheel, the outer diameters of the driving wheel and the driven wheel are connected by a synchronous belt, and a plurality of cutters are fixedly installed on the outer diameter of one side of the main shaft located inside the arc-shaped feeding tube.

[0010] Preferably, a movable block is installed on the bottom outer diameter of the rotating shaft through a bearing, a rotating rod is movably installed on one side of the inner bottom of the workbench, a bidirectional spiral groove is opened on the middle outer diameter of the rotating rod, a round head pin is fixedly connected to one side of the inner bottom of the movable block and the end of the round head pin is movably arranged inside the bidirectional spiral groove, a worm is fixedly installed on the outer diameter of one side of the movable shaft, a worm wheel is fixedly installed on the lower outer diameter of the rotating rod, and the inner ends of the worm and the worm wheel are meshingly connected.

[0011] Preferably, the end of the rotating rod extends to the interior of the rotating shaft and is fixedly connected with splines at both ends, key slots are provided on both sides of the inner bottom of the rotating shaft, and the outer ends of the splines are movably arranged inside the key slots on the corresponding sides, and two guide rods are fixedly installed on the inner top of the workbench, guide grooves are provided on both sides of the interior of the movable block, and the ends of the guide rods are movably arranged inside the guide slots on the corresponding sides.

[0012] Preferably, the top end of the short shaft extends to the top of the cooling chamber and is fixedly mounted with a driven bevel gear, a second motor is fixedly mounted on one side of the top end of the cooling chamber, a transmission shaft is fixedly mounted on the driving end of the second motor, a driving bevel gear is fixedly mounted on the middle outer diameter of the transmission shaft, and the driving bevel gear is meshed and connected with the inner end of the driven bevel gear.

[0013] Preferably, a transmission gear is fixedly installed on the outer diameter of one side of the transmission shaft, an internal gear is fixedly installed on the inner wall of the magnetic ring and the internal gear is meshed and connected with the inner end of the transmission gear, and a cooling water inlet pipe is fixedly installed on one side of the cooling chamber and the end of the cooling water inlet pipe extends to the interior of the cooling bin.

[0014] The present invention provides an extrusion device for manufacturing plastic packaging products. It has the following beneficial effects: 1. The present invention provides a cutter in the arc-shaped feeding pipe to chop the raw material before it enters the conveying pipeline, so that the raw material has a larger specific surface area, the contact area with the heating equipment is increased, and the heat can be absorbed more quickly and evenly during the plasticizing process, thereby accelerating the plasticizing speed, shortening the processing time, and improving production efficiency.

[0015] 2. The present invention adopts a method of first piling up the raw materials in a vertical feeding pipe and then feeding the raw materials into the conveying pipeline by means of the up and down reciprocating motion of the rotating shaft. Compared with the traditional uniform feeding, the compression efficiency of the raw materials in the later stage can be improved.

[0016] 3. The present invention utilizes the synergistic effect of the cooling chamber and the magnetic ring to continuously cool down the raw materials in the conveying pipeline. On the one hand, the temperature distribution of the plastic melt is more uniform, the fluidity is more consistent, and it can more evenly fill the mold cavity when entering the die head, reducing problems such as uneven product thickness and uneven surface; on the other hand, the viscosity of the raw material is increased and the flow rate is slowed down, which is conducive to better controlling the speed and flow rate of the plastic entering the die head, avoiding undesirable phenomena such as jetting and vortexes caused by excessive flow rate, thereby improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A perspective view of the present invention; Figure 2 It is a schematic diagram of the internal structure of the delivery pipeline in the present invention; Figure 3 It is a schematic diagram of the internal structure of the present invention on a workbench; Figure 4 It is a schematic diagram of the internal structure of the movable block in the present invention; Figure 5 for Figure 1 Enlarged view of point A in the middle; Figure 6 Schematic diagram of the internal structure of the cooling chamber in the present invention.

[0018] Among them, 1. workbench; 2. conveying pipeline; 3. die head; 4. main shaft; 5. first conveying auger; 6. compression auger; 7. second conveying auger; 8. vertical feeding pipe; 9. arc feeding pipe; 10. feeding hopper; 11. first motor; 12. movable shaft; 13. driving wheel; 14. driven wheel; 15. synchronous belt; 16. cutter; 17. electric heater; 18. rotating shaft; 19. upper feeding auger; 20. movable block; 21. rotating rod; 22. Spline; 23. Keyway; 24. Bidirectional spiral groove; 25. Round head pin; 26. Guide rod; 27. Guide groove; 28. Worm; 29. ​​Worm wheel; 30. Heat-conducting aluminum ring; 31. Magnetic ring; 32. Cooling chamber; 33. Cooling bin; 34. Short shaft; 35. Cross brush plate; 36. Driven bevel gear; 37. Second motor; 38. Transmission shaft; 39. Active bevel gear; 40. Transmission gear; 41. Internal gear; 42. Cooling water inlet pipe. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings of the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] Example: Please see attached Figure 1 -Attached Figure 6 The embodiment of the present invention provides an extrusion device for manufacturing plastic packaging products, such as Figure 1As shown, the workbench 1 includes a workbench 1, which serves as the supporting base of the entire device. The material is solid and durable and can stably support various components of the load-bearing device. A conveying pipe 2 is fixedly installed above the workbench 1 through a solid bracket. The bracket is precisely designed and installed to ensure that the conveying pipe 2 is firmly located above the workbench 1, providing a stable channel for the subsequent transportation of materials. A die head 3 is fixedly installed at the end of the conveying pipe 2. The die head 3 is a key component for the final molded plastic product. Its shape and structure are customized according to the needs of different plastic products to ensure that the raw materials can be accurately molded into the required shape passing through here. A main shaft 4 is movably installed inside the conveying pipe 2. The main shaft 4 is the core driving component in the entire material transportation and processing process. It can rotate flexibly in the conveying pipe 2 to drive other related components to work together.

[0021] A vertical feeding pipe 8 is fixedly installed on the side of the bottom of the conveying pipe 2 away from the die head 3. The vertical feeding pipe 8 is used to vertically convey the raw materials from the bottom to the conveying pipe 2 to ensure a stable supply of raw materials. An arc-shaped feeding pipe 9 is fixedly installed on the side of the conveying pipe 2 close to the vertical feeding pipe 8, and the end of the arc-shaped feeding pipe 9 is connected with the inside of the vertical feeding pipe 8. The unique arc design of the arc-shaped feeding pipe 9 helps the raw materials to be smoothly transferred from the feeding position to the vertical feeding pipe 8 under the action of gravity and subsequent power. A first motor 11 is fixedly installed on the inner bottom of the workbench 1. As one of the important power sources in the device, the power of the first motor 11 is carefully matched, and can provide stable and sufficient power for a series of subsequent transmission components. A movable shaft 12 is fixedly installed on the driving end of the first motor 11. After the first motor 11 is started, the power is accurately transmitted to the movable shaft 12, driving it to rotate at high speed.

[0022] The vertical feeding pipe 8 is movably provided with a rotating shaft 18, and the end of the rotating shaft 18 extends to the inside of the workbench 1. The rotating shaft 18 can be flexibly rotated in the vertical feeding pipe 8, and its design of extending to the inside of the workbench 1 is convenient for connection and power transmission with other transmission components located inside the workbench 1. An upper feeding auger 19 is fixedly installed on the outer diameter of the rotating shaft 18 located inside the vertical feeding pipe 8. The upper feeding auger 19 rotates with the rotation of the rotating shaft 18, and can lift the raw materials in the vertical feeding pipe 8 upward to prepare for subsequent entry into the conveying pipe 2. A heat-conducting aluminum ring 30 is movably installed on the outer diameter of one side of the conveying pipe 2 close to the die head 3. The heat-conducting aluminum ring 30 has good thermal conductivity, can quickly absorb the heat of the plasticized raw materials in the conveying pipe 2, and plays a key role in the subsequent cooling process. A magnetic ring 31 is movably provided on one side of the top of the workbench 1 through a bearing mounting seat, and the magnetic ring 31 covers the heat-conducting aluminum ring 30 inside, and the magnetic ring 31 passes through the shaft The bearing mounting seat can rotate flexibly, and its covering design for the heat-conducting aluminum ring 30 provides conditions for the subsequent use of the magnetic field to realize the driving of the heat-conducting aluminum ring 30 and the temperature control of the raw materials. A cooling chamber 32 is fixedly installed on one side of the conveying pipe 2 above the heat-conducting aluminum ring 30. The cooling chamber 32 is used to provide cooling medium for the heat-conducting aluminum ring 30 to realize the cooling operation of the raw materials in the conveying pipe 2. A cooling bin 33 is provided at the bottom of the cooling chamber 32. The cooling bin 33 is used to store and distribute cooling medium to ensure that it can effectively act on the heat-conducting aluminum ring 30. A short shaft 34 is movably installed inside the cooling chamber 32. The short shaft 34 can rotate in the cooling chamber 32 to transmit power to the components connected at its bottom. The bottom end of the short shaft 34 extends to the interior of the cooling bin 33 and is fixedly installed with a cross brush plate 35. The cross brush plate 35 rotates at high speed in the cooling bin 33 as the short shaft 34 rotates, which can break up the cooling medium into fine water droplets and enhance the cooling effect.

[0023] In this embodiment, a first conveying auger 5 is fixedly installed on the outer diameter of the side of the main shaft 4 away from the die head 3. The first conveying auger 5 rotates under the drive of the main shaft 4, and can push the raw materials entering the conveying pipe 2 toward the compression section. A compression auger 6 is fixedly installed on the middle outer diameter of the main shaft 4. The compression auger 6 is composed of an auger with a smaller pitch, which can efficiently compress the raw materials and improve the density of the raw materials to prepare for subsequent plasticization and molding. A second conveying auger 7 is fixedly installed on the outer diameter of the side of the main shaft 4 close to the die head 3. The second conveying auger 7 is responsible for smoothly conveying the compressed and plasticized raw materials to the die head 3 to ensure that the raw materials can enter the die head 3 at the required speed and flow rate. An electric heater 17 is fixedly installed at the top of the conveying pipe 2 near the compression auger 6. The electric heater 17 can heat the raw materials in the conveying pipe 2 to quickly plasticize it into a molten state to meet the needs of subsequent processing.

[0024] Furthermore, a hopper 10 is fixedly installed at the top of the arc-shaped feeding tube 9. The opening of the hopper 10 is relatively large, which is convenient for operators to pour the raw materials for plastic product processing into it. After the raw materials enter the hopper 10, they enter the arc-shaped feeding tube 9 under the action of gravity. The end of the movable shaft 12 extends to the outside of the workbench 1 and is fixedly installed with a driving wheel 13. When the movable shaft 12 rotates, it drives the driving wheel 13 to rotate synchronously. The driving wheel 13 is a key component in the transmission system and transmits power to subsequent components. The end of the main shaft 4 away from the die head 3 passes through the conveying tube A driven wheel 14 is fixedly installed on the inner wall of the channel 2 and the inside of the arc-shaped feeding tube 9. The outer diameters of the driving wheel 13 and the driven wheel 14 are connected by a synchronous belt 15. The driving wheel 13 drives the driven wheel 14 to rotate through the transmission action of the synchronous belt 15, so that the main shaft 4 can rotate stably. A plurality of cutters 16 are fixedly installed on the outer diameter of one side of the main shaft 4 located inside the arc-shaped feeding tube 9. When the main shaft 4 rotates, the cutter 16 rotates at a high speed, which can cut the raw materials entering the arc-shaped feeding tube 9 into pieces, creating conditions for subsequent rapid plasticization.

[0025] Furthermore, a movable block 20 is installed on the bottom outer diameter of the rotating shaft 18 through a bearing, and the movable block 20 is connected to the rotating shaft 18 through a bearing, so that the movable block 20 can flexibly move relative to the rotating shaft 18 within a certain range. A rotating rod 21 is movably installed on one side of the inner bottom of the workbench 1. The rotating rod 21 can flexibly rotate at the inner bottom of the workbench 1, and has the function of transmitting power and realizing specific movement. A bidirectional spiral groove 24 is opened on the middle outer diameter of the rotating rod 21. The unique structural design of the bidirectional spiral groove 24 provides a basis for realizing the up and down reciprocating motion of the movable block 20. A round head pin 25 is fixedly connected to one side of the inner bottom of the movable block 20 and The end of the round head pin 25 is movably arranged inside the bidirectional spiral groove 24. When the rotating rod 21 rotates, the bidirectional spiral groove 24 rotates accordingly, and the round head pin 25 slides in the bidirectional spiral groove 24, thereby driving the movable block 20 to move. A worm 28 is fixedly installed on the outer diameter of one side of the movable shaft 12. When the movable shaft 12 rotates, the worm 28 rotates accordingly. The worm 28 serves as a transmission component to transmit the power of the movable shaft 12 to the worm wheel 29. A worm wheel 29 is fixedly installed on the lower outer diameter of the rotating rod 21. The inner ends of the worm 28 and the worm wheel 29 are meshed and connected. The rotation of the worm 28 drives the worm wheel 29 and the rotating rod 21 to rotate through the meshing action.

[0026] Furthermore, the end of the rotating rod 21 extends to the interior of the rotating shaft 18 and is fixedly connected with a spline 22 at both ends. Key grooves 23 are provided on both sides of the inner bottom of the rotating shaft 18, and the outer ends of the splines 22 are movably arranged in the corresponding side key grooves 23. The matching design of the spline 22 and the key groove 23 enables the rotating rod 21 to drive itself to rotate while driving the rotating shaft 18 to rotate synchronously through the limiting matching effect of the spline 22 and the key groove 23. Two guide rods 26 are fixedly installed on the inner top of the workbench 1, and guide grooves 27 are provided on both sides of the interior of the movable block 20. The ends of the guide rods 26 are movably arranged in the corresponding side guide grooves 27. The matching of the guide rods 26 and the guide grooves 27 limits the movement of the movable block 20, ensuring that it can only make up and down reciprocating movements along the direction of the guide rods 26.

[0027] Furthermore, the top end of the short shaft 34 extends to the top of the cooling chamber 32 and is fixedly installed with a driven bevel gear 36. When the driven bevel gear 36 rotates, it can drive the short shaft 34 to rotate synchronously. A second motor 37 is fixedly installed on one side of the top end of the cooling chamber 32. The second motor 37 serves as a power source for the cooling system and provides power for a series of subsequent cooling operations. A transmission shaft 38 is fixedly installed on the driving end of the second motor 37. After the second motor 37 is started, the power is transmitted to the transmission shaft 38, driving it to rotate at high speed. A driving bevel gear 39 is fixedly installed on the middle outer diameter of the transmission shaft 38, and the driving bevel gear 39 is meshed and connected with the inner end of the driven bevel gear 36. The rotation of the driving bevel gear 39 drives the driven bevel gear 36 and the short shaft 34 to rotate through the meshing action.

[0028] Furthermore, a transmission gear 40 is fixedly installed on the outer diameter of one side of the transmission shaft 38, an internal gear 41 is fixedly installed on the inner wall of the magnetic ring 31, and the internal gear 41 is meshed and connected with the inner end of the transmission gear 40. When the transmission shaft 38 rotates, the transmission gear 40 rotates accordingly, and the magnetic ring 31 is driven to rotate through the meshing action with the internal gear 41. A cooling water inlet pipe 42 is fixedly installed on one side of the cooling chamber 32, and the end of the cooling water inlet pipe 42 extends to the interior of the cooling bin 33. Cooling water can be introduced into the cooling bin 33 through the cooling water inlet pipe 42 to provide cooling medium for subsequent cooling operations.

[0029] Working principle: First, put the raw materials for plastic product processing into the hopper 10, and the raw materials enter the arc-shaped feeding tube 9 under the action of gravity. At this time, start the first motor 11, and the powerful power of the first motor 11 drives the movable shaft 12 to rotate at a high speed. The movable shaft 12 drives the driving wheel 13 to rotate, and then utilizes the stable transmission effect of the synchronous belt 15 to drive the driven wheel 14 and the main shaft 4 to rotate. The rotating main shaft 4 will drive the cutter 16 to rotate at a high speed to cut the raw materials entering the arc-shaped feeding tube 9 into pieces. The chopped plastic raw materials have a larger specific surface area, and the contact area with the heating equipment is increased. In the plasticizing process, it can absorb heat more quickly and evenly, thereby accelerating the plasticizing speed, greatly shortening the processing time, and significantly improving production efficiency. The chopped raw materials are smoothly transported to the heating equipment. The arc-shaped feeding tube 9 enters the vertical feeding tube 8 by gravity and subsequent power, and the movable shaft 12 drives the worm 28 to rotate while rotating. The rotating worm 28 drives the worm wheel 29 and the rotating rod 21 to rotate through meshing transmission. The rotating rotating rod 21 drives the rotating shaft 18 to rotate by the precise limiting cooperation of the spline 22 and the keyway 23, thereby driving the upper feeding auger 19 on the outer diameter of the rotating shaft 18 to rotate. The rotating upper feeding auger 19 is used to transport the raw materials upward, and there is still a distance between the end of the upper feeding auger 19 and the inside of the conveying pipe 2. The raw materials will accumulate at the inner bottom of the vertical feeding tube 8. At the same time, when the rotating rod 21 rotates, it will also drive the bidirectional spiral groove 24 on the outer diameter to rotate. Since the end of the round head pin 25 moves in the bidirectional spiral groove 24, the raw materials will accumulate at the inner bottom of the vertical feeding tube 8. The inside of the groove 24, and the bidirectional spiral groove 24 is composed of two spiral grooves connected end to end but with opposite spiral directions, and the guide rod 26 and the guide groove 27 are used to limit the movable block 20. When the rotating rod 21 rotates, the sliding effect of the round head pin 25 in the movable bidirectional spiral groove 24 will drive the movable block 20 to do up and down reciprocating motion, thereby driving the rotating shaft 18 to follow the up and down reciprocating motion. When the rotating shaft 18 moves upward, the raw materials accumulated on the top of the vertical feeding pipe 8 will be sent into the conveying pipe 2. When the rotating shaft 18 moves downward, the raw materials will continue to be accumulated on the top. Compared with the traditional uniform feeding method, by first accumulating the raw materials and then sending them into the conveying pipe 2 for transportation, the compression efficiency of the raw materials in the later stage can be improved. After the delivery pipe 2, the rotating main shaft 4 will drive the first delivery auger 5, the compression auger 6 and the second delivery auger 7 to rotate, and the first delivery auger 5 is used to deliver the raw material to the compression section. The compression auger 6 is composed of an auger with a smaller pitch, which can efficiently compress the raw material. At the same time, the electric heater 17 is turned on to quickly heat the inside of the delivery pipe 2, so that the raw material is quickly plasticized into a molten state, which is convenient for subsequent processing. Then the raw material is sent to the second delivery auger 7 for transportation. While being transported, the plasticized raw material will transfer heat to the heat-conducting aluminum ring 30. At this time, cooling water is introduced into the cooling chamber 32 through the cooling water inlet pipe 42, and the second motor 37 is turned on at the same time. The transmission shaft 38 is driven to rotate by the second motor 37, which drives the active bevel gear 39 to rotate.The rotating active bevel gear 39 drives the driven bevel gear 36 and the short shaft 34 to rotate, thereby driving the cross brush plate 35 in the cooling chamber 33 to rotate at a high speed. The high-speed rotating cross brush plate 35 is used to break the cooling water into small water droplets, which fall onto the outer surface of the heated heat-conducting aluminum ring 30. These small water droplets will evaporate quickly. The heat-conducting aluminum ring 30 will be cooled quickly and continuously by the principle of evaporation and heat absorption. At the same time, the transmission shaft 38 will also drive the transmission gear 40 to rotate when it rotates. The rotating transmission gear 40 will drive the internal gear 41 to rotate, thereby driving the magnetic ring 31 to rotate. When the magnetic ring 31 rotates, the magnetic flux of the heat-conducting aluminum ring 30 will change. At this time, the heat-conducting aluminum ring 30 will Under the action of Ampere force, it rotates along the direction of the magnetic field, and uses the continuously rotating and rapidly cooling heat-conducting aluminum ring 30 to continuously cool the raw materials in the conveying pipe 2, so that the temperature distribution of the plastic melt is more uniform, thereby making the fluidity more consistent. In this way, when entering the die head 3, it can fill the mold cavity more evenly, reducing the problems of uneven product thickness and uneven surface caused by uneven fluidity. At the same time, the viscosity of the raw materials is increased and the flow speed is slowed down, which is conducive to better controlling the speed and flow rate of the plastic entering the die head 3, avoiding the undesirable phenomena such as jetting and eddy currents caused by too fast flow rate, and improving product quality. Finally, the raw materials are injected into the die head 3 and plastic products are produced.

[0030] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An extrusion device for manufacturing plastic packaging products, comprising a workbench (1), characterized in that: A conveying pipe (2) is fixedly mounted on the top of the workbench (1) via a bracket, a die head (3) is fixedly mounted on the end of the conveying pipe (2), a main shaft (4) is movably mounted inside the conveying pipe (2), a vertical feeding pipe (8) is fixedly mounted on the side of the bottom end of the conveying pipe (2) away from the die head (3), an arc-shaped feeding pipe (9) is fixedly mounted on the side of the conveying pipe (2) close to the vertical feeding pipe (8), and the end of the arc-shaped feeding pipe (9) is connected to the inside of the vertical feeding pipe (8), a first motor (11) is fixedly mounted on the inner bottom of the workbench (1), a movable shaft (12) is fixedly mounted on the driving end of the first motor (11), a rotating shaft (18) is movably arranged inside the vertical feeding pipe (8), and the end of the rotating shaft (18) extends To the inside of the workbench (1), the rotating shaft (18) is fixedly installed with an upward feeding auger (19) on the outer diameter of the vertical feeding pipe (8), and a heat-conducting aluminum ring (30) is movably installed on the outer diameter of the side of the conveying pipe (2) close to the die head (3). A magnetic ring (31) is movably arranged on one side of the top of the workbench (1) through a bearing mounting seat, and the magnetic ring (31) covers the heat-conducting aluminum ring (30) inside. A cooling chamber (32) is fixedly installed on the upper side of the conveying pipe (2) close to the heat-conducting aluminum ring (30), and a cooling bin (33) is opened at the bottom of the cooling chamber (32). A short shaft (34) is movably installed inside the cooling chamber (32), and the bottom end of the short shaft (34) extends to the inside of the cooling bin (33) and is fixedly installed with a cross brush plate (35).

2. The extrusion device for manufacturing plastic packaging products according to claim 1, characterized in that: A first conveying auger (5) is fixedly mounted on the outer diameter of a side of the main shaft (4) away from the die head (3), a compression auger (6) is fixedly mounted on the middle outer diameter of the main shaft (4), a second conveying auger (7) is fixedly mounted on the outer diameter of a side of the main shaft (4) close to the die head (3), and an electric heater (17) is fixedly mounted on the top of the conveying pipe (2) close to the compression auger (6).

3. The extrusion device for manufacturing plastic packaging products according to claim 1, characterized in that: A hopper (10) is fixedly installed at the top of the arc-shaped feeding tube (9), the end of the movable shaft (12) extends to the outside of the workbench (1) and is fixedly installed with a driving wheel (13), the end of the main shaft (4) away from the die head (3) passes through the inner wall of the conveying pipe (2) and the inside of the arc-shaped feeding tube (9) and is fixedly installed with a driven wheel (14), the outer diameters of the driving wheel (13) and the driven wheel (14) are connected by a synchronous belt (15), and a plurality of cutters (16) are fixedly installed on the outer diameter of one side of the main shaft (4) located inside the arc-shaped feeding tube (9).

4. The extrusion device for manufacturing plastic packaging products according to claim 1, characterized in that: A movable block (20) is mounted on the bottom outer diameter of the rotating shaft (18) via a bearing, a rotating rod (21) is movably mounted on one side of the inner bottom of the workbench (1), a bidirectional spiral groove (24) is provided on the middle outer diameter of the rotating rod (21), a round head pin (25) is fixedly connected to one side of the inner bottom of the movable block (20), and the end of the round head pin (25) is movably arranged inside the bidirectional spiral groove (24), a worm (28) is fixedly mounted on the outer diameter of one side of the movable shaft (12), a worm wheel (29) is fixedly mounted on the lower outer diameter of the rotating rod (21), and the inner ends of the worm (28) and the worm wheel (29) are meshingly connected.

5. The extrusion device for manufacturing plastic packaging products according to claim 4, characterized in that: The end of the rotating rod (21) extends to the inside of the rotating shaft (18) and is fixedly connected with a spline (22) at both ends; key slots (23) are provided on both sides of the inner bottom of the rotating shaft (18); the outer ends of the splines (22) are movably arranged inside the key slots (23) on the corresponding sides; two guide rods (26) are fixedly installed on the inner top of the workbench (1); guide slots (27) are provided on both sides of the inside of the movable block (20); and the ends of the guide rods (26) are movably arranged inside the guide slots (27) on the corresponding sides.

6. The extrusion device for manufacturing plastic packaging products according to claim 1, characterized in that: The top end of the short shaft (34) extends to the top of the cooling chamber (32) and is fixedly mounted with a driven bevel gear (36); a second motor (37) is fixedly mounted on one side of the top end of the cooling chamber (32); a transmission shaft (38) is fixedly mounted on the driving end of the second motor (37); a driving bevel gear (39) is fixedly mounted on the middle outer diameter of the transmission shaft (38); and the driving bevel gear (39) is meshedly connected with the inner end of the driven bevel gear (36).

7. An extrusion device for manufacturing plastic packaging products according to claim 6, characterized in that: A transmission gear (40) is fixedly mounted on the outer diameter of one side of the transmission shaft (38), an internal gear (41) is fixedly mounted on the inner wall of the magnetic ring (31), and the internal gear (41) is meshingly connected with the inner end of the transmission gear (40), and a cooling water inlet pipe (42) is fixedly mounted on one side of the cooling chamber (32), and the end of the cooling water inlet pipe (42) extends to the interior of the cooling bin (33).

Images