Premixing equipment of injection molding machine

Abstract

The utility model discloses premixing equipment of an injection molding machine, which comprises a premixing tank, feeding pipes are fixed on two sides of the top end of the premixing tank, a top servo motor is mounted in the middle of the top end of the premixing tank, a middle shaft is mounted at the output end of the bottom of the top servo motor, an auger blade is arranged in the middle of the middle shaft, and a mixing blade is fixed on the lower portion of the middle shaft. The edge of the auger blade is attached to the inner wall of the discharging port, the discharging port is formed in the center of the bottom of the separation hopper, the edge of the top of the separation hopper is fixedly connected with the inner wall of the premixing tank, an electric heating pipe is installed in the separation hopper, and a corrugated pipe is installed at the bottom end of the premixing tank. According to the premixing equipment for the injection molding machine, a novel structural design is adopted, various injection molding raw materials can be stirred, mixed and preheated, the mixed and preheated raw materials can be smoothly discharged, the mixing and heating time of the raw materials in the injection molding machine is shortened, raw material waste is reduced, and continuous and efficient injection molding production can be achieved.

Description

Technical Field

[0001] This utility model relates to the field of injection molding machine technology, specifically to a premixing equipment for injection molding machines. Background Technology

[0002] Injection molding machines are industrial equipment used for the mass production of plastic products. They inject molten plastic material into a mold cavity, which is then cooled and solidified to form products of a specific shape. They are one of the core pieces of equipment in plastic processing in modern manufacturing and are widely used in the automotive, home appliance, electronics, medical, and daily necessities industries.

[0003] Existing injection molding machines only have a feeding hopper, through which different materials are added and mixed and heated inside the machine. When there is a large amount of raw material, it is impossible to ensure sufficient mixing of multiple materials. Furthermore, the heating space inside the injection molding machine is limited, making it impossible to fully heat the raw materials. This results in a large amount of waste material being generated at the beginning of production. Therefore, it is necessary to design a premixing device for injection molding machines to address the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a premixing device for injection molding machines to solve the problem mentioned in the background art that existing injection molding machines are only equipped with a feeding hopper, and different materials are added through the feeding hopper and mixed and heated inside the injection molding machine. When there are many raw materials, it is impossible to ensure that the multiple raw materials are fully mixed. In addition, the heating space inside the injection molding machine is limited, so the raw materials cannot be fully heated, resulting in a large amount of waste material generated when production is started.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a premixing device for an injection molding machine, comprising a premixing tank, feeding pipes fixed on both sides of the top of the premixing tank, a top servo motor installed in the middle of the top of the premixing tank, a central shaft installed at the bottom output end of the top servo motor, an auger blade arranged in the middle of the central shaft, a mixing blade fixed at the lower part of the central shaft, the edge of the auger blade fitting against the inner wall of the discharge port, the discharge port being located at the center of the bottom of the separating hopper, the top edge of the separating hopper being connected and fixed to the inner wall of the premixing tank, an electric heating tube installed inside the separating hopper, a corrugated pipe installed at the bottom of the premixing tank, the bottom end of the corrugated pipe being connected and fixed to the top of the discharge pipe, a bottom servo motor installed in the middle of the bottom support leg of the premixing tank, an eccentric wheel fixed at the end of the output shaft of the bottom servo motor, the bottom end of the eccentric wheel fitting against the top of the drag-reducing roller, the drag-reducing roller being rotatably mounted on the edge of the top surface of the substrate, and the middle of the substrate being connected and fixed to the top of the outer wall of the discharge pipe.

[0006] Preferably, the diameter of the auger blade is equal to the diameter of the discharge port, and the bottom end of the auger blade is lower than the bottom end of the discharge port.

[0007] Preferably, the electric heating tubes are distributed at equal intervals with the same center in the inner side of the separation hopper, and the electric heating tubes are arranged in a ring shape.

[0008] Preferably, the bottom servo motor, the eccentric wheel and the drag reduction drum are all symmetrically distributed about the center of the substrate. The surfaces of the eccentric wheel and the drag reduction drum are both set as mirror surfaces, and the drag reduction drums are horizontally distributed at equal intervals.

[0009] Preferably, a stabilizing rod is fixed on the outer wall at the bottom end of the premixing tank. The stabilizing rod passes through the holes formed on the substrate, and a return spring is fixed at the bottom end of the stabilizing rod. The top end of the return spring is connected and fixed to the bottom surface of the substrate.

[0010] Preferably, the stabilizing rod is slidably connected to the holes formed on the substrate. The stabilizing rods are symmetrically distributed about the center of the substrate, and the bottom end of the stabilizing rod is set in a "丄" shape.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows: The premixed material equipment of this injection molding machine adopts a new structural design, which can stir, mix and preheat various injection molding raw materials, and can smoothly discharge the mixed and preheated raw materials, shortening the mixing and heating time of the raw materials in the injection molding machine, reducing raw material waste, and being able to continuously and efficiently carry out injection molding production;

[0012] 1. The raw materials inside the separation hopper are preheated by the electric heating tubes, and the falling speed of the raw materials is controlled by the auger blades to ensure the smooth transfer of the raw materials. At the same time, the mixing blades rotate stably to mix the heated various raw materials;

[0013] 2. The bottom servo motor drives the eccentric wheel to intermittently squeeze the drag reduction drum. Under the support of the return spring, the substrate with the discharge pipe shakes vertically along the stabilizing rod to quickly discharge the preheated and mixed raw materials and avoid raw material blockage. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is the front view structural schematic diagram of the present utility model;

[0015] Figure 2 is the front view sectional structural schematic diagram of the present utility model;

[0016] Figure 3 is the top view structural schematic diagram of the auger blade and the separation hopper of the present utility model;

[0017] Figure 4 is the top view structural schematic diagram of the eccentric wheel, the drag reduction drum, the substrate and the stabilizing rod of the present utility model;

[0018] Figure 5 is the side view structural schematic diagram of the eccentric wheel, the drag reduction drum and the substrate of the present utility model.

[0019] In the diagram: 1. Premix tank; 2. Feed pipe; 3. Top servo motor; 4. Central shaft; 5. Screwdriver blades; 6. Mixing blades; 7. Discharge port; 8. Dividing hopper; 9. Electric heating element; 10. Corrugated pipe; 11. Discharge pipe; 12. Bottom servo motor; 13. Eccentric wheel; 14. Resistance reducing roller; 15. Base plate; 16. Stabilizing rod; 17. Return spring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-5 This utility model provides a technical solution: a premixing device for an injection molding machine, comprising a premixing tank 1, a feed pipe 2, a top servo motor 3, a central shaft 4, auger blades 5, mixing blades 6, a discharge port 7, a separating hopper 8, an electric heating tube 9, a corrugated pipe 10, a discharge pipe 11, a bottom servo motor 12, an eccentric wheel 13, a resistance-reducing roller 14, a base plate 15, a stabilizing rod 16, and a return spring 17. Feed pipes 2 are fixed to both sides of the top of the premixing tank 1. The top servo motor 3 is installed in the middle of the top of the premixing tank 1. The central shaft 4 is installed at the bottom output end of the top servo motor 3. An auger blade 5 is arranged in the middle of the central shaft 4. Mixing blades are fixed at the lower part of the central shaft 4. 6. The edge of the auger blade 5 is attached to the inner wall of the discharge port 7. The discharge port 7 is located at the bottom center of the separator hopper 8. The top edge of the separator hopper 8 is connected and fixed to the inner wall of the premix tank 1. An electric heating tube 9 is installed inside the separator hopper 8. A corrugated pipe 10 is installed at the bottom of the premix tank 1. The bottom end of the corrugated pipe 10 is connected and fixed to the top end of the discharge pipe 11. A bottom servo motor 12 is installed in the middle of the bottom support leg of the premix tank 1. An eccentric wheel 13 is fixed at the end of the output shaft of the bottom servo motor 12. The bottom end of the eccentric wheel 13 is attached to the top end of the drag-reducing roller 14. The drag-reducing roller 14 is rotatably installed on the top edge of the base plate 15. The middle of the base plate 15 is connected and fixed to the top of the outer wall of the discharge pipe 11.

[0022] In this example, the diameter of the auger blade 5 is equal to the diameter of the discharge port 7, and the bottom end of the auger blade 5 is lower than the bottom end of the discharge port 7. The above structural design ensures that the raw material can only pass through the discharge port 7 under the rotational push of the auger blade 5.

[0023] The electric heating tubes 9 are distributed at equal intervals with the same center on the inner side of the separating hopper 8. The electric heating tubes 9 are set in a ring. The above structural design can directly heat the raw materials on the separating hopper 8 and heat the space below the separating hopper 8, and keep the raw materials in the mixing process warm.

[0024] The bottom servo motor 12, the eccentric wheel 13, and the drag reduction drum 14 are all symmetrically distributed about the center of the substrate 15. The surfaces of the eccentric wheel 13 and the drag reduction drum 14 are both set as mirror surfaces. The drag reduction drums 14 are horizontally and equally spaced. The above structural design enables the eccentric wheel 13 to intermittently squeeze the drag reduction drum 14 by using its eccentric mounting characteristics when rotating, and cooperate with the return spring 17 to stably drive the substrate 15 to perform vertical reciprocating movement. Moreover, when the eccentric wheel 13 contacts the drag reduction drum 14, the resistance is small and the wear is also small.

[0025] A stabilizing rod 16 is fixed on the outer wall of the bottom end of the premixing tank 1. The stabilizing rod 16 passes through the hole opened on the substrate 15. A return spring 17 is fixed at the bottom end of the stabilizing rod 16. The top end of the return spring 17 is connected and fixed to the bottom surface of the substrate 15. The above structural design ensures that the discharge pipe 11 and the substrate 15 can be stably lifted and reset after moving downward, and improves the stability of the vertical movement of the discharge pipe 11 and the substrate 15.

[0026] The stabilizing rod 16 is in sliding connection with the hole opened on the substrate 15. The stabilizing rod 16 is symmetrically distributed about the center of the substrate 15. The bottom end of the stabilizing rod 16 is set in a "丄" shape. The above structural design enables the substrate 15 to stably move vertically along the stabilizing rod 16, ensuring that the discharge pipe 11 can perform stable vertical jitter.

[0027] Working principle: During work, first add various raw materials into the premixing tank 1 through the feed pipe 2. The raw materials fall on the partition hopper 8 in the premixing tank 1. Start the electric heating tube 9 to preheat the raw materials, and start the top servo motor 3 to stably rotate the auger blade 5 and the mixing blade 6 through the central shaft 4. The auger blade 5 discharges the preheated raw materials downward through the discharge port 7, and the mixing blade 6 stirs and mixes the raw materials gathered at the inner bottom of the premixing tank 1 after preheating. When the electric heating tube 9 works, it also heats and keeps warm the raw materials being mixed below.

[0028] After mixing is completed, open the valve at the bottom of the discharge pipe 11, and control the symmetrically distributed bottom servo motor 12 to drive the eccentric wheel 13 to rotate synchronously and unidirectionally. The eccentric wheel 13 intermittently squeezes the drag reduction drum 14 and the substrate 15 during rotation. Under the elastic force of the return spring 17, the substrate 15 brings the discharge pipe 11 to perform small-amplitude jittering first downward and then upward along the stabilizing rod 16. Since the corrugated pipe 10 can stably expand and contract, when jittering, the heated and mixed raw materials are smoothly discharged through the corrugated pipe 10 and the discharge pipe 11, collected by a container and added to an injection molding machine for production. This is the working principle of the premixed material equipment of this injection molding machine.

[0029] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A premixing device for an injection molding machine, comprising a premixing tank (1), characterized in that: On both sides of the top of the premixing tank (1), there are fixed feed pipes (2). In the middle of the top of the premixing tank (1), there is installed a top servo motor (3). At the bottom output end of the top servo motor (3), there is installed a central shaft (4). In the middle of the central shaft (4), there are arranged screw blades (5). At the lower part of the central shaft (4), there is fixed a mixing blade (6). The edge of the screw blade (5) is in contact with the inner wall of the discharge port (7). The discharge port (7) is arranged at the center of the bottom of the partition hopper (8). The top edge of the partition hopper (8) is connected and fixed to the inner wall of the premixing tank (1). In the partition hopper (8), there is installed an electric heating tube (9). At the bottom end of the premixing tank (1), there is installed a corrugated pipe (10). The bottom end of the corrugated pipe (10) is connected and fixed to the top end of the discharge pipe (11). In the middle of the bottom legs of the premixing tank (1), there is installed a bottom servo motor (12). At the end of the output shaft of the bottom servo motor (12), there is fixed an eccentric wheel (13). The bottom end of the eccentric wheel (13) is in contact with the top end of the resistance reduction roller (14). The resistance reduction roller (14) is rotatably installed at the edge of the top surface of the base plate (15). The middle of the base plate (15) is connected and fixed to the outer wall top of the discharge pipe (11).

2. The injection molding machine premixing equipment according to claim 1, characterized in that: The diameter of the screw blade (5) is equal to the diameter of the discharge port (7), and the bottom end of the screw blade (5) is lower than the bottom end of the discharge port (7).

3. The injection molding machine premixing equipment according to claim 1, characterized in that: The electric heating tubes (9) are distributed at equal intervals in the same concentric circle inside the partition hopper (8), and the electric heating tubes (9) are arranged in a ring shape.

4. The injection molding machine premixing equipment according to claim 1, characterized in that: The bottom servo motor (12), the eccentric wheel (13) and the resistance reduction roller (14) are all symmetrically distributed about the center of the base plate (15). The surfaces of the eccentric wheel (13) and the resistance reduction roller (14) are both set as mirror surfaces, and the resistance reduction rollers (14) are horizontally distributed at equal intervals.

5. The injection molding machine premixing equipment according to claim 1, characterized in that: On the outer wall at the bottom end of the premixing tank (1), there is fixed a stabilizing rod (16). The stabilizing rod (16) passes through the hole opened on the base plate (15). At the bottom end of the stabilizing rod (16), there is fixed a return spring (17). The top end of the return spring (17) is connected and fixed to the bottom surface of the base plate (15).

6. The injection molding machine premixing equipment according to claim 5, characterized in that: The stabilizing rod (16) is slidably connected to the hole opened on the base plate (15). The stabilizing rods (16) are symmetrically distributed about the center of the base plate (15), and the bottom end of the stabilizing rod (16) is set in a "丄” shape.

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