Injection molding equipment for plastic product production

Abstract

The utility model relates to the technical field of plastic product production technique discloses a kind of injection molding equipment for plastic product production, including storage container, the bottom of storage container is provided with discharge pipe, the top of storage container is rotatably provided with rotary drum, the both sides of rotary drum are rotatably provided with several rotating shafts, and the one end of rotating shaft located rotary drum outside is equipped with stirring paddle, the top of rotary drum is provided with cavity, hydraulic rod is installed in cavity, and hydraulic rod is fixedly connected with the lifting rod that passes through rotary drum, and the bottom end of lifting rod is equipped with plugging block;The utility model is preheated by heating component to raw material in storage container, and rotary drum is rotated by driving assembly, so that rotary drum rotates, wherein there is certain inclination angle between stirring paddle and rotation plane, and when inclination angle is upward, raw material can be pushed to flow upward in the process of stirring paddle rotation, so that the raw material of different layers can flow to the top of storage container, to facilitate heating component to raw material fully and evenly heated.

Description

Technical Field

[0001] This utility model relates to the field of plastic product manufacturing technology, specifically to an injection molding equipment for plastic product manufacturing. Background Technology

[0002] The injection molding principle in plastic product manufacturing is to heat and melt plastic raw materials, inject them into the mold cavity under high pressure, and then cool and solidify them to form a product.

[0003] In the prior art, Chinese Patent Publication No. CN222886204U discloses an injection molding equipment for producing plastic products. By setting up a preheating component, the heating wire is energized to heat the air in the heating chamber to the required temperature. The main fan body starts to rotate, forcing air convection, making the temperature in the heating chamber more uniform. The plastic raw material enters the heating chamber from the storage cylinder and is preheated during this process, ensuring that the raw material has a suitable temperature and fluidity when entering the injection molding stage, reaching or approaching the required processing temperature. The preheated plastic raw material enters the injection molding stage, and since it has already reached the required processing temperature, the heating time in the injection molding process is reduced, thereby improving production efficiency.

[0004] However, existing technology heats the raw materials in the storage cylinder by using hot air generated by the preheating component on the sealed cover, and stirs the raw materials by the stirring rod to prevent them from settling. However, because the raw materials in the storage cylinder are gathered together, the flow between the layers of raw materials is poor, which makes it impossible for the hot air generated by the preheating component to heat the raw materials evenly.

[0005] Therefore, those skilled in the art have proposed an injection molding machine for the production of plastic products to solve the problems mentioned in the background above. Utility Model Content

[0006] The purpose of this invention is to provide an injection molding equipment for the production of plastic products, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution: An injection molding machine for producing plastic products includes a storage cylinder with inlets on both sides of its top and a discharge pipe at its bottom. A rotating drum is rotatably mounted on the top of the storage cylinder, and several rotating shafts are rotatably mounted on both sides of the rotating drum. A stirring paddle is installed at one end of each rotating shaft located outside the rotating drum. A cavity is formed at the top of the rotating drum, and a hydraulic rod is installed within the cavity. A lifting rod is fixedly connected to the hydraulic rod and extends through the rotating drum. A sealing block is installed at the bottom end of the lifting rod to seal the discharge pipe. The machine also includes: A displacement assembly, which is disposed inside the rotating drum, is used to realize the change of the angle of the stirring paddle; A heating assembly is disposed at the top of the storage cylinder and is used to heat the raw materials inside the storage cylinder. A drive assembly is disposed at the top of the storage cylinder and is used to drive the rotating cylinder to rotate.

[0008] As a further embodiment of this utility model: the displacement assembly includes a drive cavity opened in the rotating drum, and a plurality of lifting frames corresponding to the rotating shaft are installed on the part of the lifting rod located in the drive cavity. Racks with opposite directions are installed at both ends of the lifting frames, and a gear that meshes with the rack is installed at one end of the rotating shaft located in the drive cavity.

[0009] As a further embodiment of this utility model: the heating assembly includes a heating box installed on the top of the storage cylinder, a fan and several heating wires are installed inside the heating box, a conveying pipe is connected to the bottom of the heating box, and an annular frame located inside the storage cylinder is connected to the bottom of the conveying pipe, with several air outlets opened at the bottom of the annular frame.

[0010] As a further improvement of this utility model, several extension tubes extending to the bottom of the storage cylinder are installed on the outer side of the ring frame.

[0011] As a further embodiment of this utility model: the drive assembly includes a motor installed on the top of the storage cylinder, and a first gear and a second gear are respectively installed on the top of the rotating cylinder and the motor drive end, and the first gear and the second gear mesh with each other.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model preheats the raw materials in the storage cylinder through a heating component, thereby ensuring the temperature and fluidity of the raw materials during injection molding. During the preheating process, the drive component drives the rotating cylinder to rotate, where the stirring paddle has a certain angle with the rotating plane. When the angle is upward, the stirring paddle can push the raw materials upward during rotation, thereby improving the flow between different layers of raw materials in the storage cylinder. This allows the raw materials in different layers to flow towards the top of the storage cylinder, facilitating the heating component to heat the raw materials fully and evenly. After heating is completed, the lifting rod is driven to rise by the hydraulic rod, thereby driving the sealing block to rise and opening the discharge pipe for material discharge. The displacement component adjusts the angle of the stirring paddle so that the angle is downward, thereby pushing the raw materials downward and accelerating the speed at which the raw materials in the storage cylinder are discharged from the discharge pipe. The effect is better. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of an injection molding equipment used in the production of plastic products.

[0014] Figure 2 This is a schematic diagram of the internal structure of a heating chamber in an injection molding machine used for manufacturing plastic products.

[0015] Figure 3 for Figure 1 A magnified view of a portion of point A in the middle.

[0016] Figure 4 This is a schematic diagram of the structure of the rotary drum and stirring paddle in an injection molding machine used for producing plastic products.

[0017] In the diagram: 1. Storage cylinder; 2. Feed inlet; 3. Discharge pipe; 4. Rotary drum; 5. Drive chamber; 6. Rotary shaft; 7. Stirring paddle; 8. Cavity; 9. Hydraulic rod; 10. Lifting rod; 11. Lifting frame; 12. Rack; 13. Gear; 14. Sealing block; 15. Heating box; 16. Fan; 17. Heating wire; 18. Conveying pipe; 19. Ring frame; 20. Extension pipe; 21. Air outlet; 22. First gear; 23. Second gear; 24. Motor. Detailed Implementation

[0018] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0019] Please see Figures 1-4 An injection molding machine for producing plastic products includes a storage cylinder 1. The storage cylinder 1 has inlets 2 on both sides of its top and a discharge pipe 3 at its bottom. A rotating drum 4 is rotatably mounted on the top of the storage cylinder 1. Several rotating shafts 6 are rotatably mounted on both sides of the rotating drum 4. A stirring paddle 7 is installed at one end of each rotating shaft 6 located outside the rotating drum 4. A cavity 8 is formed at the top of the rotating drum 4. A hydraulic rod 9 is installed inside the cavity 8. A lifting rod 10, which passes through the rotating drum 4, is fixedly connected to the hydraulic rod 9. A sealing block 14 is installed at the bottom end of the lifting rod 10 to seal the discharge pipe 3. The machine also includes: A displacement assembly is disposed inside the rotating drum 4 to realize the change of the angle of the stirring paddle 7; A heating assembly is disposed at the top of the storage cylinder 1 and is used to heat the raw materials inside the storage cylinder 1. A drive assembly is disposed on the top of the storage cylinder 1 and is used to drive the rotating cylinder 4 to rotate.

[0020] The raw materials in the storage cylinder 1 are preheated by the heating component to ensure the temperature and flowability of the raw materials during injection molding. During the preheating process, the rotating cylinder 4 is driven by the drive component. The stirring paddle 7 has a certain angle with the rotating plane. When the angle is upward, the stirring paddle 7 can push the raw materials upward during rotation, thereby improving the flow between different layers of raw materials in the storage cylinder 1. This allows the raw materials in different layers to flow to the top of the storage cylinder 1, which facilitates the heating component to heat the raw materials fully and evenly. After heating is completed, the lifting rod 10 is driven to rise by the hydraulic rod 9, which in turn drives the sealing block 14 to rise and open the discharge pipe 3 to discharge the material. The displacement component adjusts the angle of the stirring paddle 7 so that the angle is downward, which can push the raw materials downward and accelerate the speed at which the raw materials in the storage cylinder 1 are discharged from the discharge pipe 3. The effect is better.

[0021] In one embodiment, the displacement assembly includes a drive cavity 5 opened in the rotating drum 4. The lifting rod 10 is equipped with a plurality of lifting frames 11 corresponding to the rotating shaft 6 at the part located in the drive cavity 5. The two ends of the lifting frames 11 are equipped with racks 12 in opposite directions. The end of the rotating shaft 6 located in the drive cavity 5 is equipped with a gear 13 that meshes with the rack 12.

[0022] In the initial state, the angle between the stirring paddle 7 and the rotating plane is upward, so that the raw material can be pushed upward during the rotation of the stirring paddle 7, thereby improving the flow between different layers of raw material in the storage cylinder 1, so that the raw material in different layers can flow to the top of the storage cylinder 1, thereby facilitating the heating component to heat the raw material fully and evenly.

[0023] In one embodiment, the heating assembly includes a heating box 15 installed on the top of the storage cylinder 1. The heating box 15 is equipped with a fan 16 and several heating wires 17. The bottom of the heating box 15 is connected to a conveying pipe 18. The bottom of the conveying pipe 18 is connected to an annular frame 19 located inside the storage cylinder 1. The bottom of the annular frame 19 is provided with several air outlets 21.

[0024] When heating the raw material, the fan 16 is started and the heating wire 17 is energized. The heating wire 17 heats the air, and the airflow generated by the fan 16 blows the hot air toward the conveying pipe 18. The conveying pipe 18 delivers the hot air into the ring frame 19, and the hot air is evenly sent into the storage cylinder 1 through the air outlets 21 evenly distributed at the bottom of the ring frame 19. This preheats the raw material in the storage cylinder 1, thereby ensuring the temperature and fluidity of the raw material during injection molding.

[0025] In one embodiment, the outer side of the ring frame 19 is provided with a plurality of extension tubes 20 extending to the bottom of the storage cylinder 1.

[0026] Among them, the extension pipes 20 extending to the bottom of the storage cylinder 1 are also filled with hot air, which can heat the raw material at the bottom edge of the storage cylinder 1, so that the heat can penetrate into the raw material more quickly.

[0027] In one embodiment, the drive assembly includes a motor 24 mounted on the top of the storage cylinder 1, and a first gear 22 and a second gear 23 are respectively mounted on the top of the rotating drum 4 and the drive end of the motor 24, and the first gear 22 and the second gear 23 mesh with each other.

[0028] By starting the motor 24, the rotating drum 4 can be driven to rotate through the meshing first gear 22 and second gear 23, thereby driving the stirring paddle 7 to stir the raw materials.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An injection molding machine for producing plastic products, comprising a material storage cylinder, characterized in that, The storage cylinder has inlets on both sides of its top and a discharge pipe at its bottom. A rotating drum is rotatably mounted on the top of the storage cylinder, and several rotating shafts are rotatably mounted on both sides of the rotating drum. A stirring paddle is installed at the outer end of each rotating shaft. A cavity is formed at the top of the rotating drum, and a hydraulic rod is installed inside the cavity. A lifting rod is fixedly connected to the hydraulic rod and extends through the rotating drum. A sealing block is installed at the bottom of the lifting rod to seal the discharge pipe. The storage cylinder also includes: A displacement assembly, which is disposed inside the rotating drum, is used to realize the change of the angle of the stirring paddle; A heating assembly is disposed at the top of the storage cylinder and is used to heat the raw materials inside the storage cylinder. A drive assembly is disposed at the top of the storage cylinder and is used to drive the rotating cylinder to rotate.

2. The injection molding equipment for producing plastic products according to claim 1, characterized in that, The displacement assembly includes a drive chamber opened inside the rotating drum. The portion of the lifting rod located inside the drive chamber is equipped with several lifting frames corresponding to the rotating shaft. The two ends of the lifting frames are equipped with racks in opposite directions. The end of the rotating shaft located inside the drive chamber is equipped with a gear that meshes with the racks.

3. The injection molding equipment for producing plastic products according to claim 1, characterized in that, The heating assembly includes a heating box installed on top of the storage cylinder, a fan and several heating wires inside the heating box, a conveying pipe connected to the bottom of the heating box, and an annular frame located inside the storage cylinder connected to the bottom of the conveying pipe, with several air outlets at the bottom of the annular frame.

4. The injection molding equipment for producing plastic products according to claim 3, characterized in that, Several extension tubes extending to the bottom of the storage cylinder are installed on the outer side of the ring frame.

5. The injection molding equipment for producing plastic products according to claim 1, characterized in that, The drive assembly includes a motor mounted on the top of the storage cylinder, with a first gear and a second gear respectively mounted on the top of the rotating cylinder and the motor drive end, and the first gear and the second gear meshing with each other.

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