An injection molding device for producing a one-way valve body

Abstract

The invention discloses an injection molding device for producing a one-way valve body, and relates to the technical field of injection molding. The injection molding device comprises an extruder and a mold. A hopper is installed on the extruder. A spiral feeding blade and a driving shaft are installed inside the extruder. One end of the driving shaft is connected to a transmission box, and the driving shaft drives the spiral feeding blade to rotate. A heating mechanism is installed inside the extruder. A transfer box is installed at the output end of the extruder. The output end of the transfer box is connected to the gate of the mold. The heating mechanism heats the plastic pellets inside the extruder. The spiral feeding blade sends the molten raw material into the transfer box. The transfer box vibrates and stirs the molten raw material, and uses negative pressure to attract the gas contained in the molten raw material while vibrating, so as to prevent the molten raw material containing gas from entering the mold, and to avoid pits on the surface of the formed one-way valve body or bubbles inside, so as to further improve the molding quality of the one-way valve body.

Description

Technical Field

[0001] The invention relates to the technical field of injection molding, in particular to an injection molding device for producing a one-way valve body. Background Art

[0002] The technology of composite hose has been used in daily chemical packaging since the 1990s, from the earliest toothpaste tubes to various cosmetic hoses today. With the development of the economy and the improvement of the quality of life, consumers have higher and higher requirements for cosmetic tubes. For very thin and fluid paste products, especially sunscreen products, when consumers use them, the paste is extremely easy to leak out, resulting in adhesion and contamination. In order to solve the problem of the paste easily leaking out, a valve body and a valve core are assembled in the tube body to solve this problem.

[0003] The valve body is made by injection molding. To ensure that the molded product is flawless and free of bubbles, the plastic pellets must be dry and the molten plastic raw material must be free of bubbles. Although existing injection molding devices are also equipped with bubble removal mechanisms, the molten raw material is always flowing during the injection molding process, which makes it difficult for bubbles wrapped in the molten raw material to escape. Summary of the invention

[0004] The object of the present invention is to provide an injection molding device for producing a one-way valve body, so as to solve the problems raised in the prior art.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an injection molding device for producing a one-way valve body, comprising a frame, a hydraulic system, a heating mechanism, a transmission box and a mold, wherein the transmission box and the mold are mounted on the frame, and also comprising an extruder, wherein the extruder is mounted on the frame, a transfer box is mounted at the output end of the extruder, a hopper is mounted at one end of the extruder, a unloading mechanism is mounted at the contraction portion of the hopper, a transmission box is mounted at one end of the extruder, the transmission box is connected to a drive shaft inside the extruder, a spiral feeding blade is mounted on the drive shaft, the mold is located at the output end of the extruder, the output end of the transfer box is connected to the gate of the mold, a heating mechanism is arranged in the casing of the extruder, a negative pressure pump and a partition are arranged inside the transfer box, a negative pressure hole is arranged on the partition, and the negative pressure pump uses the negative pressure hole to extract gas from the molten raw material. The heating mechanism heats the plastic pellets inside the extruder, and the spiral feeding blades feed the molten raw materials into the transfer box. The transfer box vibrates and stirs the molten raw materials, and uses negative pressure to absorb the gas contained in the molten raw materials while vibrating, preventing the molten raw materials containing gas from entering the mold, avoiding pits on the surface of the one-way valve body or bubbles inside, and further improving the molding quality of the one-way valve body.

[0006] The unloading mechanism includes a gearbox installed outside the hopper, a driving motor connected to the input end of the gearbox, and two rotating shafts rotatably installed in the contraction part of the hopper. The rotating shaft is connected to the output end of the gearbox, and both ends of the rotating shaft pass through the contraction part of the hopper. A cross-shaped material plate is installed on the rotating shaft located in the contraction part. Two sensors are installed inside the hopper and between the two rotating shafts. A plurality of slots are arranged on the two material plates along the axial direction of the rotating shaft. The slots on the two material plates are staggered. When the two material plates cross each other and are in a horizontal state, the two material plates cooperate with each other to form a complete plate. The driving motor drives the rotating shaft to rotate through the gearbox, and the material plate stirs the plastic pellets in the hopper driven by the rotating shaft, breaking up the plastic pellets during the stirring process. When unloading is not required, the two material plates are driven by the rotating shaft to cross each other and be horizontal. They cross each other through the slots to form a complete plate. The plate closes most of the channels in the contraction part of the hopper. The plastic pellets can only flow down from the slots. Due to the friction between the plastic pellets, the plastic pellets will be blocked in the slots, so that the plastic pellets accumulate in the hopper and cannot fall into the extruder. When unloading is required, the material plates rotate and stir the plastic pellets under the drive of the rotating shaft. The crossed material plates will squeeze the plastic pellets out of the slots. The sensor detects the position of the material plate. When the material plate passes the sensor, the sensor detects an electrical signal. The electrical signal is a signal that the two material plates are in a crossed and horizontal state, which is convenient for the control system to control the drive motor to work or stop working.

[0007] The housing of the extruder is provided with an insulating cavity, which divides the housing into two layers, an inner layer and an outer layer, and the heating mechanism is installed in the insulating cavity. The insulating cavity divides the housing of the extruder into two layers, an inner layer and an outer layer are used to reduce the diffusion of heat outward, and also has a heat insulation effect.

[0008] A hollow square butt joint is installed on one side of the gear box and the outer side of the hopper contraction part at one end of the rotating shaft. The lower end of the butt joint is connected to the heat insulation cavity. The rotating shaft is a hollow shaft. One end of the rotating shaft passes through the gear box, and the two ends of the rotating shaft are located in two butt joints. When the heating mechanism heats the plastic pellets inside the extruder, the radiated heat will heat the gas in the heat insulation cavity, and the gas temperature inside the rotating shaft will increase through heat transfer and the connection of the butt joint. When the plastic pellets flow through the hopper, the plastic pellets will exchange heat with the rotating shaft when they pass through the material plate and the rotating shaft, so that the plastic pellets are preheated in advance.

[0009] An output pipe is installed at the lower end of the transfer box, and a vibration mechanism is installed inside the transfer box. The vibration mechanism passes through the middle of the partition. During the injection molding process, one end of the vibration mechanism is immersed in the molten raw material. When the injection molding is stopped, one end of the vibration mechanism is inserted into the output pipe.

[0010] The vibration mechanism includes a vibration rod, a middle tube connected to the vibration rod, and two switching cylinders that drive the middle tube to rotate. The middle tube passes through a partition, and the vibration rod is located below the partition. A base plate is rotatably mounted on one end of the switching cylinder, and the base plate is mounted at an internal angle of the transfer box. A connecting piece is installed on one end of the middle tube, and the cylinder rods of the two switching cylinders are rotatably connected to the two ends of the connecting piece.

[0011] The vibrating rod performs reciprocating linear motion along the circumference of the middle tube, a hydraulic cylinder is rotatably installed above the middle tube, the upper end of the hydraulic cylinder is connected to the transfer box, two inlet and outlet pipes are radially symmetrically installed on the hydraulic cylinder, a pad is rotatably installed inside the hydraulic cylinder, the middle tube and the vibrating rod are both hollow structures, a spacer is eccentrically installed inside the middle tube, one end of the spacer is bent twice and connected to the center of the pad, the connecting piece is located below the hydraulic cylinder, temperature sensors are installed in the two inlet and outlet pipes, and the inlet and outlet pipes are connected to the hydraulic system;

[0012] A plurality of vibrating plates are arranged circumferentially inside the vibrating rod, a paddle is installed at one end of the middle tube inside the vibrating rod, and a spring is installed between the middle tube and the inner wall of the vibrating rod. A temperature sensor (not shown in the figure) is electrically connected to the control system. The temperature sensor is used to monitor the temperature of the hydraulic oil. The hydraulic oil flows in the vibrating rod and the middle tube, and the injection temperature of the molten raw material is monitored by the temperature sensor. The hydraulic oil flow pipeline of the hydraulic system includes two hydraulic pumps (not shown in the figure). The hydraulic pumps are respectively connected to two inlet and outlet pipes through pipelines. Both hydraulic pumps are electrically connected to the control system. Under the control of the control system, the two hydraulic pumps have different working speeds for extracting and pumping hydraulic oil. The spacer divides the internal flow channel of the middle tube into two large flow channels and small flow channels with different cross-sectional areas. When the vibrating rod needs to be immersed in the molten raw material for vibration, the working speed of the hydraulic pump connected to the large flow channel is greater than the working speed of the hydraulic pump connected to the small flow channel. Since the amount of hydraulic oil pumped into the middle pipe and the vibrating rod is greater than the amount of hydraulic oil extracted, the vibrating rod moves downward under the pressure of the hydraulic oil. During the movement of the vibrating rod, the spring is stretched, and the paddles sequentially paddle multiple vibrating plates, so that the vibrating plates drive the vibrating rod to vibrate; after the vibrating rod moves downward, the switching cylinder works under the control of the control system and drives the middle pipe to rotate through the connecting piece. The middle pipe and the vibrating rod are slidably connected through keyways and flat keys, and the middle pipe drives the vibrating rod to rotate during the rotation process. Driven by the two switching cylinders, the middle tube drives the vibrating rod to rotate 90°. As the spacer follows the rotation of the middle tube, the spacer drives the pad to rotate. The rotation of the middle tube causes the positions of the large flow channel and the small flow channel to be interchanged. At the same time, the working speed of the hydraulic pump that pumps the hydraulic oil is lower than the working speed of the hydraulic pump that extracts the hydraulic oil, resulting in a negative pressure area on the vibrating rod and the middle tube. Under the dual cooperation of the negative pressure area and the spring, the vibrating rod moves upward and resets. During the reset process, the paddle paddles the vibrating plate again. When the vibrating rod is reset, the switching cylinder drives the middle tube to rotate back 90° again. The amount of hydraulic oil pumped into the middle tube and the vibrating rod is again greater than the amount of hydraulic oil extracted. The switching cylinder repeatedly drives the middle tube to rotate, and the working speed of the hydraulic pump is continuously switched, so that the vibrating rod performs reciprocating linear motion on the middle tube, causing the vibrating rod to vibrate during the movement.

[0013] The outer side of the vibrating rod is provided with an arc-shaped blade, which moves up and down and rotates 90 degrees along with the vibrating rod, and the area of ​​the vibrating molten raw material and the area of ​​the stirring molten raw material are expanded by the blade.

[0014] A closing cylinder for controlling mold opening and closing is installed on the outside of the mold, and the closing cylinder is installed on the frame through the side plate. The frame is provided with a discharge port at a position below the mold. The discharge port is used for the one-way valve body to fall off after molding.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The transfer box vibrates and stirs the molten raw materials, and uses negative pressure to absorb the gas contained in the molten raw materials while vibrating, making it easier for bubbles contained in the molten raw materials to escape, effectively preventing the molten raw materials containing gas from entering the mold, avoiding pits on the surface of the one-way valve body or bubbles inside, and further improving the molding quality of the one-way valve body.

[0017] 2. The heat-insulating cavity divides the casing of the extruder into two layers, the inner and outer layers, and uses the outer layer to reduce the diffusion of heat outwards, while also playing a heat-insulating role. The heat radiated by the heating mechanism will heat the gas in the heat-insulating cavity, and will increase the temperature of the gas inside the shaft. When the plastic pellets flow through the hopper, the plastic pellets will exchange heat with the shaft when they pass through the material plate and the shaft, so that the plastic pellets are preheated in advance, and the plastic pellets are further dehydrated, dried and heated in the hopper, which accelerates the subsequent hot melt efficiency in the extruder and the quality of the injection molded products. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention;

[0019] Figure 2 It is a front half-section view of the overall structure of the present invention;

[0020] Figure 3 It is a three-dimensional diagram of the hopper connected to the material discharge mechanism of the present invention;

[0021] Figure 4 A top view of a hopper of the present invention;

[0022] Figure 5 It is a right half-section view of the hopper of the present invention;

[0023] Figure 6 It is an exploded perspective view of the transfer box of the present invention;

[0024] Figure 7 It is a three-dimensional diagram of the connection between the middle pipe, the connecting piece and the switching cylinder of the present invention;

[0025] Figure 8 A top view of the connection between the switching cylinder and the connecting member of the present invention;

[0026] Fig. 9 It is a cross-sectional view of the connection between the middle tube and the vibrating rod of the present invention;

[0027] Fig.10 It is a schematic diagram of the three-dimensional structure of the one-way valve body;

[0028] Fig.11 It is a schematic diagram of the cross section of the one-way valve body.

[0029] In the figure: 1. extruder; 2. hopper; 3. transmission box; 4. transfer box; 5. mold; 6. closing cylinder; 7. material plate; 8. drive shaft; 9. insulation chamber; 10. vibration mechanism; 11. gear box; 12. butt pipe; 13. vibration rod; 14. partition; 15. blade; 16. hydraulic cylinder; 17. connecting piece; 18. switching cylinder; 19. inlet and outlet pipes; 20. middle pipe; 21. pad; 22. spacer; 23. spring; 24. vibration plate. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments 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.

[0031] Example: Figure 1 - Fig. 9 As shown, the present invention provides a technical solution of an injection molding device for producing a one-way valve body, including a frame, a hydraulic system, a heating mechanism, an extruder 1, a transmission box 3 and a mold 5. The transmission box 3 and the mold 5 are installed on the frame, and a closing cylinder 6 for controlling mold opening and closing is installed on the outer side of the mold 5. The closing cylinder 6 is installed on the frame through a side plate, and the frame is provided with a feed opening at a position below the mold 5. The feed opening is used for the one-way valve body to be formed to fall, and a material box is placed below the feed opening.

[0032] The extruder 1 is installed on a frame, a transfer box 4 is installed at the output end of the extruder 1, a hopper 2 is installed at one end of the extruder 1, a feeding mechanism is installed at the contraction part of the hopper 2, a transmission box 3 is installed at one end of the extruder 1, the transmission box 3 is connected to the drive shaft 8 inside the extruder 1, a spiral feeding blade is installed on the drive shaft 8, a mold 5 is located at the output end of the extruder 1, and the output end of the transfer box 4 is connected to the gate of the mold 5.

[0033] The casing of the extruder 1 is provided with an insulating cavity 9, which divides the casing into two layers, an inner layer and an outer layer, and a heating mechanism is installed in the insulating cavity 9. The heating mechanism heats the plastic pellets in the extruder 1 into molten raw materials for injection molding, and the insulating cavity 9 divides the casing of the extruder 1 into two layers, an inner layer and an outer layer, and uses the outer layer to reduce the diffusion of heat outward, and also has a heat insulation effect.

[0034] The unloading mechanism includes a gear box 11 installed on the outside of the hopper 2, a driving motor connected to the input end of the gear box 11, and two rotating shafts rotatably installed in the contraction part of the hopper 2. The rotating shafts are connected to the output end of the gear box 11, and both ends of the rotating shafts pass through the contraction part of the hopper 2. A cross-shaped material plate 7 is installed on the rotating shaft located in the contraction part. Two sensors are installed inside the hopper 2 and between the two rotating shafts. A number of slots are arranged on the two material plates 7 along the axial direction of the rotating shaft. The slots on the two material plates 7 are staggered. When the two material plates 7 cross each other and are in a horizontal state, the two material plates 7 cooperate with each other to form a complete plate.

[0035] A hollow square butt joint 12 is installed on one side of the gear box 11 and the outer side of the contraction part of the hopper 2 at one end of the rotating shaft. The lower end of the butt joint 12 is connected to the heat insulation cavity 9. The rotating shafts are all hollow shafts. One end of the rotating shaft passes through the gear box 11, and the two ends of the rotating shaft are located in the two butt joints 12. When the heating mechanism heats the plastic pellets inside the extruder 1, the radiated heat will heat the gas in the heat insulation cavity 9, and through heat transfer and the connection of the butt joint 12, the gas temperature inside the rotating shaft will increase. When the plastic pellets flow through the hopper 2, the plastic pellets will exchange heat with the rotating shaft when passing through the material plate 7 and the rotating shaft, so that the plastic pellets are preheated in advance.

[0036] A negative pressure pump and a partition 14 are arranged inside the transfer box 4. A negative pressure hole is arranged on the partition 14. The negative pressure pump uses the negative pressure hole to extract gas from the molten raw material.

[0037] An output pipe is installed at the lower end of the transfer box 4, and a vibration mechanism 10 is installed inside the transfer box 4. The vibration mechanism 10 passes through the middle of the partition 14. During the injection molding process, one end of the vibration mechanism 10 is immersed in the molten raw material. When the injection molding is stopped, one end of the vibration mechanism 10 is inserted into the output pipe.

[0038] The vibration mechanism 10 includes a vibration rod 13, a middle tube 20 connected to the vibration rod 13, and two switching cylinders 18 for driving the middle tube 20 to rotate. The middle tube 20 passes through the partition 14, and the vibration rod 13 is located below the partition 14. A base plate is rotatably mounted on one end of the switching cylinder 18, and the base plate is mounted at an internal angle of the transfer box 4. A connecting piece 17 is installed on one end of the middle tube 20, and the cylinder rods of the two switching cylinders 18 are rotatably connected to the two ends of the connecting piece 17.

[0039] The vibrating rod 13 performs reciprocating linear motion along the circumference of the middle tube 20. A hydraulic cylinder 16 is rotatably installed above the middle tube 20. The upper end of the hydraulic cylinder 16 is connected to the transfer box 4. The hydraulic cylinder 16 is radially symmetrically installed with two inlet and outlet pipes 19. A pad 21 is rotatably installed inside the hydraulic cylinder 16. The middle tube 20 and the vibrating rod 13 are both hollow structures. A spacer 22 is eccentrically installed inside the middle tube 20. One end of the spacer 22 is bent twice and connected to the center of the pad 21. The connecting piece 17 is located below the hydraulic cylinder 16. Temperature sensors are installed in the two inlet and outlet pipes 19. The inlet and outlet pipes 19 are connected to the hydraulic system.

[0040] A plurality of vibration plates 24 are arranged circumferentially inside the vibration rod 13 , a paddle is installed at one end of the middle tube 20 inside the vibration rod 13 , a spring 23 is installed between the middle tube 20 and the inner wall of the vibration rod 13 , and an arc-shaped blade 15 is installed on the outer side of the vibration rod 13 .

[0041] The temperature sensor is electrically connected to the control system. The temperature sensor is used to monitor the temperature of the hydraulic oil. The hydraulic oil flows in the vibrating rod 13 and the middle pipe 20. The injection temperature of the molten raw material is monitored by the temperature sensor. The hydraulic oil flow pipeline of the hydraulic system includes two hydraulic pumps. Both hydraulic pumps are electrically connected to the control system. Under the control of the control system, the two hydraulic pumps have different working speeds for extracting and pumping hydraulic oil.

[0042] Working principle of the present invention:

[0043] The plastic pellets are put into the hopper 2. When the plastic pellets are discharged, the driving motor drives the rotating shaft to rotate through the gear box 11. The material plate 7 stirs the plastic pellets in the hopper 2 driven by the rotating shaft, and the plastic pellets are broken up during the stirring process.

[0044] When no material is needed, the sensor detects the position of the material plate 7. When the material plate 7 passes the sensor, the sensor detects an electrical signal. The electrical signal is a signal that the two material plates 7 are in a crossed and horizontal state, which makes it easier for the control system to control the drive motor to stop working. The two material plates 7 cross each other through the slots and form a complete plate. The plate closes most of the channels in the contraction part of the hopper 2. The plastic pellets can only flow downward from the slots. Due to the friction between the plastic pellets, the plastic pellets will be blocked in the slots, so that the plastic pellets accumulate in the hopper 2 and cannot fall into the extruder 1.

[0045] The driving motor drives the driving shaft 8 to rotate through the transmission box 3, and the spiral feeding blade pushes the plastic pellets toward the mold 5. During the pushing process, the heating mechanism heats the plastic pellets into molten raw materials for injection molding. The molten raw materials are first sent to the transfer box 4, and then flow into the mold 5 through the output pipe and the gate.

[0046] When the molten raw material is inside the transfer box 4, when the vibrating rod 13 is immersed in the molten raw material and vibrates, the working speed of the hydraulic pump connected to the large flow channel is greater than the working speed of the hydraulic pump connected to the small flow channel, and the vibrating rod 13 moves downward under the pressure of the hydraulic oil. During the movement of the vibrating rod 13, the spring 23 is stretched, and the paddles sequentially paddle the multiple vibrating plates 24, so that the vibrating plates 24 drive the vibrating rod 13 to vibrate;

[0047] After the vibrating rod 13 moves downward, the switching cylinder 18 works under the control of the control system and drives the middle tube 20 to rotate through the connecting piece 17. Driven by the two switching cylinders 18, the middle tube 20 drives the vibrating rod 13 to rotate 90 degrees, and the spacer 22 rotates with the middle tube 20. The rotation of the middle tube 20 makes the positions of the large flow channel and the small flow channel interchange. At the same time, the control system adjusts the hydraulic pump so that the working speed of the hydraulic pump pumping hydraulic oil is lower than the working speed of the hydraulic pump extracting hydraulic oil, resulting in a negative pressure area in the vibrating rod 13 and the middle tube 20. Under the dual cooperation of the negative pressure area and the spring 23, the vibrating rod 13 moves upward and resets. During the reset process, the paddle pokes the vibrating plate 24 again.

[0048] When the vibrating rod 13 is reset, the control system controls the switching cylinder 18 and the hydraulic pump again, and the switching cylinder 18 drives the middle tube 20 to rotate back 90 degrees again, and the amount of hydraulic oil pumped into the middle tube 20 and the vibrating rod 13 is again greater than the amount of hydraulic oil pumped out. The switching cylinder 18 repeatedly drives the middle tube 20 to rotate, and the working speed of the hydraulic pump is continuously switched, so that the vibrating rod 13 performs reciprocating linear motion on the middle tube 20, so that the vibrating rod 13 generates vibration during the movement.

[0049] The blades 15 follow the vibration rod 13 to move up and down and rotate 90 degrees, and the blades 15 expand the area of ​​the vibrating molten raw material and the area of ​​the stirring molten raw material.

[0050] When the vibrating rod 13 vibrates and stirs the molten raw material, the negative pressure pump draws air from the space below the partition 14 through the negative pressure hole, so that the space below the partition 14 is at negative pressure. The negative pressure space facilitates the molten raw material to discharge gas outward.

[0051] After the molten raw material has been poured into the mold 5 for a certain period of time, the control system will turn off the hydraulic pump that extracts the hydraulic oil and increase the operating speed of the hydraulic pump that pumps the hydraulic oil, so that the vibrating rod 13 moves toward the output pipe under the pressure of the hydraulic oil and is inserted into the output pipe, pressing the molten raw material in the output pipe into the mold 5, isolating the molten raw material out of the mold 5 gate from the molten raw material in the transfer box 4, and then the control system will turn off the hydraulic pump that pumps the hydraulic oil.

[0052] After the one-way valve body is cooled and formed, the control system operates the hydraulic pump for extracting hydraulic oil, and the vibrating rod 13 is reset under the action of the tension of the spring 23 and the negative pressure area. Under the control of the control system, the closing cylinder 6 opens the mold 5, and the one-way valve body is pushed out of the mold 5 by the ejector pin and falls into the material box under the frame through the discharge port.

[0053] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. An injection molding device for producing a one-way valve body, comprising a frame, a hydraulic system, a heating mechanism, a transmission box (3) and a mold (5), wherein the transmission box (3) and the mold (5) are mounted on the frame, and characterized in that: It also includes an extruder (1), the extruder (1) is mounted on a frame, a transfer box (4) is mounted at the output end of the extruder (1), a hopper (2) is mounted at one end of the extruder (1), a material discharge mechanism is mounted at the contraction portion of the hopper (2), a transmission box (3) is mounted at one end of the extruder (1), the transmission box (3) is axially connected to a drive shaft (8) inside the extruder (1), a spiral feeding blade is mounted on the drive shaft (8), a mold (5) is located at the output end of the extruder (1), the output end of the transfer box (4) is connected to the gate of the mold (5), a negative pressure pump and a partition (14) are arranged inside the transfer box (4), a negative pressure hole is arranged on the partition (14), and the negative pressure pump uses the negative pressure hole to extract gas from the molten raw material; A heat-insulating cavity (9) is provided in the casing of the extruder (1), the heat-insulating cavity (9) divides the casing into two layers, an inner layer and an outer layer, and the heating mechanism is installed in the heat-insulating cavity (9); The material discharge mechanism comprises a gear box (11) mounted outside the hopper (2), a driving motor connected to the input end of the gear box (11), and two rotating shafts rotatably mounted on the contraction portion of the hopper (2), the rotating shafts being connected to the output end of the gear box (11), and the two ends of the rotating shafts passing through the contraction portion of the hopper (2); A hollow square butt joint pipe (12) is installed on one side of the gear box (11) and on the outer side of one end of the rotating shaft at the contraction part of the hopper (2); the lower end of the butt joint pipe (12) is connected to the heat insulation cavity (9); the rotating shaft is a hollow shaft; one end of the rotating shaft passes through the gear box (11), and the two ends of the rotating shaft are located in the two butt joint pipes (12); An output pipe is installed at the lower end of the transfer box (4), and a vibration mechanism (10) is installed inside the transfer box (4). The vibration mechanism (10) passes through the middle of the partition (14). During the injection molding process, one end of the vibration mechanism (10) is immersed in the molten raw material. When the injection molding is stopped, one end of the vibration mechanism (10) is inserted into the output pipe; The vibration mechanism (10) comprises a vibration rod (13), a middle tube (20) connected to the vibration rod (13), and two switching cylinders (18) for driving the middle tube (20) to rotate, the middle tube (20) passing through a partition (14), the vibration rod (13) being located below the partition (14), a base plate being rotatably mounted on one end of the switching cylinder (18), the base plate being mounted at an internal angle of the transfer box (4), a connecting piece (17) being mounted on one end of the middle tube (20), and cylinder rods of the two switching cylinders (18) being rotatably connected to both ends of the connecting piece (17); The vibrating rod (13) performs reciprocating linear motion along the circumference of the middle tube (20); a hydraulic cylinder (16) is rotatably mounted above the middle tube (20); the upper end of the hydraulic cylinder (16) is connected to the transfer box (4); two inlet and outlet pipes (19) are radially symmetrically mounted on the hydraulic cylinder (16); a pad (21) is rotatably mounted inside the hydraulic cylinder (16); the middle tube (20) and the vibrating rod (13) are both hollow structures; a spacer (22) is eccentrically mounted inside the middle tube (20); one end of the spacer (22) is bent twice and connected to the center of the pad (21); the connecting piece (17) is located below the hydraulic cylinder (16); temperature sensors are mounted in the two inlet and outlet pipes (19); the inlet and outlet pipes (19) are connected to a hydraulic system; A plurality of vibration plates (24) are circumferentially arranged inside the vibration rod (13), a paddle is installed at one end of the middle tube (20) located inside the vibration rod (13), and a spring (23) is installed between the middle tube (20) and the inner wall of the vibration rod (13).

2. The injection molding device for producing a one-way valve body according to claim 1, characterized in that: A cross-shaped material plate (7) is installed on the rotating shaft located in the contraction portion, and two sensors are installed inside the hopper (2) and between the two rotating shafts. A plurality of slots are provided on the two material plates (7) along the axial direction of the rotating shaft. The slots on the two material plates (7) are staggered. When the two material plates (7) cross each other and are in a horizontal state, the two material plates (7) cooperate with each other to form a complete plate.

3. The injection molding device for producing a one-way valve body according to claim 1, characterized in that: An arc-shaped blade (15) is mounted on the outer side of the vibration rod (13).

4. The injection molding device for producing a one-way valve body according to claim 1, characterized in that: A closing cylinder (6) for controlling mold opening and closing is installed on the outer side of the mold (5); the closing cylinder (6) is installed on the frame via a side plate; and a material discharge port is provided on the frame at a position below the mold (5).

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