Production device for the production of a low-pressure injection-molding material

Abstract

The utility model discloses a kind of production devices for low-pressure injection molding material preparation, it is related to low-pressure injection molding material preparation technical field, including mixed stirring drum, the top of mixed stirring drum is fixedly connected with top cover by bolt, the production device for low-pressure injection molding material preparation is set with rotating pipe, rotating blade and scraper block, when needing to clean inside mixed stirring drum, rotating joint and rotating pipe and liquid inside liquid capsule are extracted by liquid pump, then liquid is discharged into liquid tank inside to be collected and stored by the other end of liquid pump, at this time, reset spring pushes push block to drive push column and scraper block to move, so that push column drives scraper block to move to rotating pipe direction, so that scraper block contracts, at this time, the extension end of electric telescopic rod pushes down cleaning ring, so that cleaning ring drives spray head to move down, rotating pipe and telescopic box and push column and scraper block and mixed stirring drum inner wall are cleaned, so as to clean inside mixed stirring drum.

Description

Technical Field

[0001] This utility model relates to the field of low-pressure injection molding material preparation technology, specifically to a production device for preparing low-pressure injection molding materials. Background Technology

[0002] With societal progress, the automotive industry is developing rapidly, and automobiles have a significant impact on human life. Car interiors typically serve decorative and aesthetic purposes, enhancing the car's appearance and comfort, and extending its lifespan. This necessitates higher requirements for the lifespan and performance of automotive interior materials. Currently, commonly used automotive interior materials include PVC (polyvinyl chloride) and TPO (thermoplastic polyolefin elastomer). TPO, as a new type of automotive interior material, has a lower density and is more environmentally friendly than PVC, leading to its increasingly widespread application in automotive interiors. TPO is a high-performance thermoplastic elastomer with advantages such as low density, excellent low-temperature impact resistance, ease of processing, and reusability. Furthermore, using TPO as an automotive interior material allows for direct low-pressure injection molding, reducing the need for flame treatment and adhesive spraying processes, saving storage space for the injection molding skeleton, thereby reducing processes, material input, inventory, energy consumption, and labor costs. The low-pressure injection molding of interior materials requires mixing and stirring various raw materials, necessitating the use of mixing and stirring equipment.

[0003] According to application number CN221985493U, a mixing device for injection molding raw materials is provided. It features a mixing motor controlled by a control panel to rotate a mixing rod, allowing a first mixing component and a second mixing component to mix the injection molding raw materials in a mixing tank. The first mixing component consists of three sets of blades with gradually decreasing lengths. The second mixing component consists of a first arc-shaped rod, a second arc-shaped rod, and a deflector plate. A gap is left between the first and second arc-shaped rods, and one end of the deflector plate is pointed to improve the mixing effect of the injection molding slurry. The mixing effect is good. A guide plate is provided at the top of the mixing rod to divert the injection molding raw materials entering the crushing chamber from the discharge port, making the raw materials more dispersed and ensuring a good mixing effect. Furthermore, the diversion by the guide plate slows down the falling speed of the injection molding raw materials, preventing them from directly impacting the mixing tank. To prevent damage to the mixing rod and extend its service life, a heating coil and scraper are incorporated. During the mixing of the injection molding material, the heating coil heats the interior of the mixing chamber, transforming the material from a solid to a molten state. The first and second mixing components then uniformly mix the material, improving the quality of the subsequently molded parts. The scraper scrapes away any adhering material from the inner wall of the mixing chamber, preventing it from sticking. A crushing chamber with two staggered crushing rollers, driven by a motor, crushes the injection molding material fed through the hopper, reducing particle size and facilitating mixing, thus improving subsequent mixing efficiency. The smaller particles also reduce the load on the mixing rod. However, after discharge, some material remains on the mixing components and the inner wall of the mixing chamber. The device lacks a structure for cleaning these components and the inner wall, making cleaning impossible. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a production apparatus for preparing low-pressure injection molding materials, which solves the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a production device for preparing low-pressure injection molding materials, comprising a mixing drum, a top cover fixedly connected to the top of the mixing drum by bolts, a rotating tube rotatably connected to the bottom of the top cover, two telescopic boxes fixedly connected to the outside of the rotating tube, several rotating blades fixedly connected to the outside of the rotating tube above and below the telescopic boxes, a liquid bladder fixedly connected to one side of the inner cavity of each telescopic box, a push block fixedly connected to one end of each liquid bladder, a push column fixedly connected to one end of each push block, one end of each push column extending to the outside of the telescopic box and fixedly connected to a scraper, a return spring sleeved on the outside of each push column, one end of each return spring connected to one side of the inner cavity of the telescopic box, and the other end of each return spring fixedly connected to one side of the push block, two feed valves fixedly connected to the top of the top cover, and the bottom ends of each feed valve extending into the mixing drum.

[0006] Preferably, a fixing frame is fixedly connected to the top of the top cover, the top end of the rotating tube extends into the interior of the fixing frame, a rotary joint is installed on the top of the fixing frame, the top end of the rotating tube is connected to the bottom end of the rotary joint, a motor is fixedly connected to one side of the inner cavity of the fixing frame, and meshing bevel gears are fixedly sleeved on the outer side of the motor output end and the outer side of the rotating tube.

[0007] Preferably, a liquid pump is fixedly connected to the top of the fixed frame, and a liquid tank is fixedly connected to the top of the fixed frame and to one side of the liquid pump. One end of the liquid pump extends into the liquid tank, and the other end of the liquid pump is connected to one end of the rotary joint. The inside of the liquid bladder is connected to the inside of the rotary tube through a liquid pipe.

[0008] Preferably, an electric telescopic rod is fixedly connected to the top of the top cover and to both sides of the fixing frame. The telescopic ends of the two electric telescopic rods extend into the mixing drum and are fixedly connected to a cleaning ring. A through groove is opened inside the cleaning ring, and a water cavity is opened inside the through groove and to the outside of the through groove. Several nozzles are fixedly connected to the outer and inner sides of the cleaning ring. One end of each nozzle extends into the water cavity. A hose is fixedly connected to the top of the cleaning ring, and the top end of the hose passes through the top cover and extends to the outer side of the top cover.

[0009] Preferably, a water pump is fixedly connected to one side of the mixing drum, one end of the water pump is connected to a hose, and the other end of the water pump is connected to an external water supply pipe.

[0010] Preferably, a discharge valve is fixedly connected to the bottom of the mixing drum, and support legs are fixedly connected to both sides of the mixing drum. The support legs are fixed to the ground by screws, and a controller is fixedly connected to one side of one of the support legs.

[0011] This utility model provides a production apparatus for preparing low-pressure injection molding materials, which has the following beneficial effects: 1. This low-pressure injection molding material preparation production device, equipped with a rotating tube, rotating blades, and scraper, allows for the cleaning of the mixing drum's interior when necessary. A liquid pump extracts liquid from the rotary joint, rotating tube, and liquid bladder, then discharges the liquid into a liquid tank for collection and storage. A return spring pushes a pusher block, which in turn moves the pusher column and scraper block towards the rotating tube, causing the scraper block to retract. Simultaneously, the telescopic end of the electric telescopic rod pushes a cleaning ring downwards, causing the cleaning ring to move the nozzle downwards, thus cleaning the rotating tube, telescopic box, pusher column, scraper block, and the inner wall of the mixing drum.

[0012] 2. This low-pressure injection molding material preparation production device is equipped with a telescopic box, a push column, and a scraper. When it is necessary to clean the inside of the mixing drum, the scraper can be retracted so that the cleaning ring can drive several nozzles to move down. After cleaning, the telescopic end of the electric telescopic rod drives the cleaning ring and several nozzles on the cleaning ring to move up to the initial position. At the same time, the liquid pump draws out the liquid from the liquid tank and then discharges the liquid into the rotating tube through the rotary joint. Then, the liquid enters the liquid bladder through the rotating tube, causing the liquid bladder to expand. The liquid bladder pushes the push block, push column, and scraper to move, causing the push block to compress the return spring, so that the scraper contacts the inner wall of the mixing drum, thereby continuing to clean the inner wall of the mixing drum through the scraper. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the structure on the top cover of this utility model; Figure 3 This is a schematic diagram of the internal structure of the cleaning ring of this utility model; Figure 4 This is a schematic diagram of the internal connection structure between the rotating tube and the telescopic box of this utility model.

[0014] In the diagram: 1. Mixing drum; 2. Top cover; 3. Feed valve; 4. Rotary pipe; 5. Rotary blade; 6. Telescopic box; 7. Liquid bladder; 8. Push block; 9. Return spring; 10. Push column; 11. Scraper; 12. Fixing frame; 13. Motor; 14. Bevel gear; 15. Rotary joint; 16. Liquid pump; 17. Liquid tank; 18. Electric telescopic rod; 19. Hose; 20. Cleaning ring; 21. Water chamber; 22. Through groove; 23. Nozzle; 24. Water pump. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] Example 1 Please see Figures 1 to 4 This utility model provides a technical solution: a production device for preparing low-pressure injection molding materials, including a mixing drum 1. The top of the mixing drum 1 is fixedly connected to a top cover 2 by bolts. The bottom of the top cover 2 is rotatably connected to a rotating tube 4. Two telescopic boxes 6 are fixedly connected to the outside of the rotating tube 4. Several rotating blades 5 are fixedly connected to the outside of the rotating tube 4, above and below the telescopic boxes 6. A liquid bladder 7 is fixedly connected to one side of the inner cavity of the telescopic box 6. A push block 8 is fixedly connected to one end of the liquid bladder 7. A push column 10 is fixedly connected to one end of the push block 8. One end of the push column 10 extends to the outside of the telescopic box 6 and is fixedly connected to a scraper 11. A return spring 9 is sleeved on the outside of the push column 10. One end of the return spring 9 is connected to one side of the inner cavity of the telescopic box 6, and the other end of the return spring 9 is fixedly connected to one side of the push block 8. Two feed valves 3 are fixedly connected to the top of the top cover 2. The bottom ends of the feed valves 3 extend into the inside of the mixing drum 1.

[0017] A fixed frame 12 is fixedly connected to the top of the top cover 2. The top end of the rotating tube 4 extends into the interior of the fixed frame 12. A rotary joint 15 is installed on the top of the fixed frame 12. The top end of the rotating tube 4 is connected to the bottom end of the rotary joint 15. A motor 13 is fixedly connected to one side of the inner cavity of the fixed frame 12. A meshing bevel gear 14 is fixedly sleeved on the outer side of the output end of the motor 13 and the outer side of the rotating tube 4. The output end of the motor 13 can drive the bevel gear 14 to rotate, so that the bevel gear 14 drives the rotating tube 4 to rotate, thereby driving the rotating blade 5, the push column 10, the push block 8, and the scraper block 11 to rotate.

[0018] A liquid pump 16 is fixedly connected to the top of the fixed frame 12. A liquid tank 17 is fixedly connected to the top of the fixed frame 12 and to one side of the liquid pump 16. One end of the liquid pump 16 extends into the liquid tank 17, and the other end of the liquid pump 16 is connected to one end of the rotary joint 15. The inside of the liquid bladder 7 is connected to the inside of the rotating tube 4 through a liquid pipe so as to input or extract liquid into the liquid bladder 7.

[0019] Electric telescopic rods 18 are fixedly connected to the top of the top cover 2 and on both sides of the fixed frame 12. The telescopic ends of the two electric telescopic rods 18 extend into the mixing drum 1 and are fixedly connected to a cleaning ring 20. A through groove 22 is opened inside the cleaning ring 20. A water cavity 21 is opened inside the through groove 22 and on the outside of the through groove 22. Several nozzles 23 are fixedly connected to the outside and inside of the cleaning ring 20. One end of each nozzle 23 extends into the water cavity 21. A hose 19 is fixedly connected to the top of the cleaning ring 20. The top end of the hose 19 passes through the top cover 2 and extends to the outside of the top cover 2. Through the hose 19, the cleaning ring 20 can move up and down inside the mixing drum 1.

[0020] A water pump 24 is fixedly connected to one side of the mixing drum 1. One end of the water pump 24 is connected to the hose 19, and the other end of the water pump 24 is connected to the external water supply pipe, which can clean the inside of the mixing drum 1 with water.

[0021] Example 2 Please see Figure 1 The present invention provides a technical solution: a discharge valve is fixedly connected to the bottom of the mixing drum 1, and support legs are fixedly connected to both sides of the mixing drum 1. The support legs are fixed to the ground by screws, and a controller is fixedly connected to one side of one support leg. The device is controlled by the controller.

[0022] In summary, when using this low-pressure injection molding material preparation production device, low-pressure injection molding materials such as 40-60 parts of modified TPO, 20-50 parts of talc-modified polypropylene, 1-4 parts of pigment, 3-5 parts of silane coupling agent, 2-6 parts of microcrystalline cellulose, and 0.1-1 parts of heat stabilizer are added into the mixing drum 1 through the feed valve 3. The above raw material formula is only one low-pressure injection molding material formula, and other existing low-pressure injection molding material formulas are also possible. The output of motor 13 drives bevel gear 14 and rotating tube 4 to rotate, causing rotating tube 4 to move push column 10 and scraper 11 along the inner wall of mixing drum 1 via telescopic box 6, scraping off the material from the inner wall of mixing drum 1. Rotating tube 4 drives several rotating blades 5 to stir the raw materials inside mixing drum 1. After stirring, the raw materials inside mixing drum 1 are discharged through discharge valve. When cleaning is required, liquid pump 16 extracts liquid from rotary joint 15, rotating tube 4, and liquid bladder 7, and then discharges the liquid into liquid tank 17 for collection and storage through the other end of liquid pump 16. At this time, return spring 9 pushes... The moving push block 8 drives the push column 10 and scraper 11 to move, causing the push column 10 to drive the scraper 11 to move towards the rotating tube 4, causing the scraper 11 to retract. At this time, the telescopic end of the electric telescopic rod 18 pushes the cleaning ring 20 to move down, causing the cleaning ring 20 to drive the nozzle 23 to move down, cleaning the rotating tube 4, the telescopic box 6, the push column 10, the scraper 11, and the inner wall of the mixing drum 1. During the cleaning process, the output end of the motor 13 drives the bevel gear 14 to rotate the rotating tube 4, the telescopic box 6, the push column 10, and the scraper 11. At this time, the stiffness of the return spring 9 is greater than the centrifugal force of the rotating tube 4, so that the push block 8, the push column 10, and the scraper 11 will not rotate with the centrifugal force when the rotating tube 4 rotates. After cleaning, the telescopic end of the electric telescopic rod 18 drives the cleaning ring 20 and several nozzles 23 on the cleaning ring 20 to move to the initial position. At the same time, the liquid pump 16 draws out the liquid inside the liquid tank 17, and then discharges the liquid into the rotating tube 4 through the rotary joint 15. Then, the liquid enters the liquid bladder 7 through the rotating tube 4, causing the liquid bladder 7 to expand. This causes the liquid bladder 7 to push the push block 8, the push column 10, and the scraper 11 to move, causing the push block 8 to compress the reset spring 9, and causing the scraper 11 to contact the inner wall of the mixing drum 1.

[0023] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A production apparatus for preparing low-pressure injection molding materials, comprising a mixing drum (1), characterized in that: The top of the mixing drum (1) is fixedly connected to a top cover (2) by bolts. A rotating tube (4) is rotatably connected to the bottom of the top cover (2). Two telescopic boxes (6) are fixedly connected to the outside of the rotating tube (4). Several rotating blades (5) are fixedly connected to the outside of the rotating tube (4) and above and below the telescopic boxes (6). A liquid bladder (7) is fixedly connected to one side of the inner cavity of the telescopic box (6). A pusher block (8) is fixedly connected to one end of each liquid bladder (7). One end of each pusher block (8) is fixedly connected to... A pusher column (10) is connected to the outside of the telescopic box (6) and a scraper block (11) is fixedly connected to it. A return spring (9) is sleeved on the outside of the pusher column (10). One end of the return spring (9) is connected to one side of the inner cavity of the telescopic box (6), and the other end of the return spring (9) is fixedly connected to one side of the pusher block (8). Two feed valves (3) are fixedly connected to the top of the top cover (2). The bottom end of the feed valve (3) extends into the mixing drum (1).

2. The production apparatus for preparing low-pressure injection molding materials according to claim 1, characterized in that: The top of the top cover (2) is fixedly connected to a fixing frame (12). The top end of the rotating tube (4) extends into the fixing frame (12). A rotary joint (15) is installed on the top of the fixing frame (12). The top end of the rotating tube (4) is connected to the bottom end of the rotary joint (15). A motor (13) is fixedly connected to one side of the inner cavity of the fixing frame (12). The outer side of the output end of the motor (13) and the outer side of the rotating tube (4) are both fixedly fitted with meshing bevel gears (14).

3. The production apparatus for preparing low-pressure injection molding materials according to claim 2, characterized in that: A liquid pump (16) is fixedly connected to the top of the fixed frame (12). A liquid tank (17) is fixedly connected to the top of the fixed frame (12) and to one side of the liquid pump (16). One end of the liquid pump (16) extends into the liquid tank (17). The other end of the liquid pump (16) is connected to one end of the rotary joint (15). The inside of the liquid bladder (7) is connected to the inside of the rotating tube (4) through a liquid pipe.

4. The production apparatus for preparing low-pressure injection molding materials according to claim 1, characterized in that: Electric telescopic rods (18) are fixedly connected to the top of the top cover (2) and to both sides of the fixing frame (12). The telescopic ends of the two electric telescopic rods (18) extend into the mixing drum (1) and are fixedly connected to a cleaning ring (20). A through groove (22) is opened inside the cleaning ring (20). A water cavity (21) is opened inside the through groove (22) and to the outside of the through groove (22). Several nozzles (23) are fixedly connected to the outside and inside of the cleaning ring (20). One end of each nozzle (23) extends into the water cavity (21). A hose (19) is fixedly connected to the top of the cleaning ring (20). The top end of the hose (19) passes through the top cover (2) and extends to the outside of the top cover (2).

5. The production apparatus for preparing low-pressure injection molding materials according to claim 1, characterized in that: A water pump (24) is fixedly connected to one side of the mixing drum (1). One end of the water pump (24) is connected to a hose (19), and the other end of the water pump (24) is connected to an external water supply pipe.

6. The production apparatus for preparing low-pressure injection molding materials according to claim 1, characterized in that: A discharge valve is fixedly connected to the bottom of the mixing drum (1), and support legs are fixedly connected to both sides of the mixing drum (1). The support legs are fixed to the ground by screws, and a controller is fixedly connected to one side of one of the support legs.

Images