A vehicle safety component MIM injection control device

Abstract

This utility model discloses a MIM injection control device for automotive safety components, relating to the field of automotive safety component manufacturing technology. It includes a hopper and a cylinder. A servo motor is fixedly installed on the upper surface of the hopper, and a fixed pipe is fixedly connected to the lower surface of the cylinder. A connecting pipe is movably sleeved on the lower surface of the fixed pipe. A mixture of metal powder and binder is poured into the hopper. The servo motor then starts, driving a fixed screw to rotate. The screw extrudes the material. The mixture of metal powder and binder tends to be loose and has a low bulk density. A set of agitators fixed to the surface of the screw disperses the nearby accumulated mixture. However, bridging of the mixture still occurs on the inner wall of the hopper. A starting cylinder's piston drives a fixed pusher block to move. The pusher block's linear reciprocating movement pushes the mixture along with it, reducing bridging and blockage caused by the mixture accumulating in the hopper and improving the stability and reliability of the feeding process.

Description

Technical Field

[0001] This utility model relates to the field of automotive safety component manufacturing technology, and in particular to an automotive safety component MIM injection control device. Background Technology

[0002] The MIM injection control unit, a key piece of equipment in the metal powder injection molding (MIM) process for producing automotive safety components, plays a crucial role in ensuring product quality and production efficiency. The MIM process involves mixing metal powder with a binder to create a flowable injection feedstock, which is then precisely injected into the mold cavity using an injection control unit. Subsequent debinding and sintering processes yield high-precision, high-performance automotive safety components. Throughout the production process, the extruder, as a vital component for plasticizing and conveying the mixture to the mold, directly impacts the quality and stability of the injection molding process.

[0003] Typically, extruders have the following key structures and functions:

[0004] 1. The screw assembly is responsible for conveying, compressing and plasticizing the material. Through the rotation of the screw, the material is pushed from the hopper to the front end of the extruder, and shear force is applied to the material in this process to make it evenly mixed and achieve a good plasticized state.

[0005] 2. The barrel provides space for heating and plasticizing materials. The barrel is heated by external heating elements so that the materials can be plasticized at a suitable temperature. At the same time, the structural design of the barrel must ensure that the materials can flow stably within it and avoid stagnation or local overheating.

[0006] 3. The drive system provides power for the rotation of the screw. Through components such as motors and reducers, the screw speed is precisely controlled to meet the extrusion speed requirements of different materials and processes.

[0007] 4. The temperature control system monitors the material temperature in real time through sensors such as thermocouples installed in the barrel and screw, and adjusts the heating element according to the set value to ensure that the material maintains a suitable temperature throughout the extrusion process.

[0008] Currently, various measures have been taken in the industry to improve the performance of extruders in MIM injection molding of automotive safety components. Some manufacturers use high-precision screws and barrels to improve the plasticization quality and extrusion accuracy of materials; some manufacturers optimize the drive system to achieve more precise speed control, thereby improving the stability of the extrusion process; and other manufacturers are committed to improving the temperature control system, using advanced control algorithms and high-precision temperature sensors to ensure accurate control of material temperature.

[0009] However, the above-described implementation still has the following problems. Regarding the extruder outlet, the traditional fixed-length outlet cannot adapt to the diverse needs of different mold structures and molding processes. For some complex molds, a fixed-length outlet may lead to an unreasonable material flow path, causing pressure loss and uneven temperature, affecting product quality. Existing control methods are difficult to effectively intervene in such abnormal material flow caused by a fixed outlet length. In the feeding stage, material is prone to blockage and accumulation. Due to the complex characteristics of the metal powder and binder mixture used in MIM injection molding of automotive safety components, material may not smoothly enter the extruder at the hopper and feed inlet due to its own weight, friction, agglomeration, etc., which not only reduces production efficiency but may also lead to uneven plasticization and the generation of waste. This application proposes a solution to these problems: designing an extruder with an adjustable outlet length and anti-blockage and anti-accumulation structure, integrating an automotive safety component MIM injection control device. This device can flexibly adapt to different molds, optimize material flow, effectively prevent feed blockage and accumulation, improve the production quality and efficiency of automotive safety components, and provide more flexible and precise control, overcoming the shortcomings of existing technologies. Utility Model Content

[0010] To address the shortcomings of existing technologies, this utility model provides a MIM injection control device for automotive safety components. It solves the problem that traditional fixed-length outlets cannot adapt to the diverse needs of different mold structures and molding processes. Existing control methods are difficult to effectively intervene in material flow abnormalities caused by fixed outlet lengths, which can easily lead to material blockage and accumulation, reducing production efficiency and potentially causing uneven plasticization of materials.

[0011] To achieve the above objectives, this utility model provides the following technical solution:

[0012] A MIM injection control device for automotive safety components includes a hopper and a cylinder. A servo motor is fixedly mounted on the upper surface of the hopper, and a fixed tube is fixedly connected to the lower surface of the cylinder. A connecting tube is movably sleeved on the lower surface of the fixed tube. A threaded ring II is threadedly sleeved on the annular side of the fixed tube, and a threaded ring I is fixedly connected to the lower surface of the threaded ring II. A spiral rod is provided inside the hopper, two sets of stirring rods are provided inside the hopper, and a pusher block is provided inside the hopper. A fixed block is fixedly connected to the left surface of the hopper, and a cylinder is fixedly mounted on the left surface of the fixed block.

[0013] Preferably, the cylinder piston is fixedly connected to the push block, and the threaded ring is threadedly sleeved to the upper end of the connecting pipe.

[0014] Preferably, the annular side of the spiral rod is fixedly connected to two connecting rings, and the two connecting rings are respectively fixedly connected to two sets of stirring rods.

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

[0016] 1. During use, a mixture of metal powder and binder is poured into the hopper. At this time, the servo motor starts and drives the fixed screw to rotate. The screw extrudes the material. The mixture of metal powder and binder is loose and has a low bulk density. At this time, a set of stirring rods fixed on the surface of the screw will break up the mixture in the vicinity. However, bridging of the mixture will still occur on the inner wall of the hopper. At this time, the piston of the cylinder is activated, which drives the fixed pusher to move. The pusher moves linearly back and forth, pushing the mixture to move together. This reduces the bridging and accumulation of the mixture in the hopper and the blockage caused by it, thus improving the stability and reliability of feeding.

[0017] 2. During discharge, by rotating the combination of threaded ring one and threaded ring two upwards, threaded ring one is disengaged from the connecting pipe, opening the limit switch. At this time, the connecting pipe can move telescopically on the fixed pipe. After adjusting the connecting pipe to the required length, rotating the combination of threaded ring one and threaded ring two downwards resets the connection, making the connecting pipe and the fixed pipe in a limited and fixed state. For some molds with complex structures or special requirements, the adjustable extruder outlet length can better adapt to the installation space and position requirements of the mold, making the connection between the extruder and the mold tighter and more accurate, preventing material leakage, and making the control more flexible, ensuring the smooth progress of the injection molding process. Attached Figure Description

[0018] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0019] Figure 1 This is an overall structural diagram of the present invention;

[0020] Figure 2 This is an exploded view of the overall structure of this utility model;

[0021] Figure 3 This is a structural diagram of the connecting pipe of this utility model;

[0022] Figure 4 This is a structural diagram of the hopper of this utility model.

[0023] Legend: 1. Hopper; 2. Cylinder; 3. Servo motor; 4. Connecting pipe; 5. Fixing block; 6. Cylinder; 7. Screw rod; 8. Fixing pipe; 9. Threaded ring one; 10. Stirring rod; 11. Push block; 12. Threaded ring two; 13. Connecting ring. Detailed Implementation

[0024] This application provides an MIM injection control device for automotive safety components, which effectively solves the problem that traditional fixed-length outlets cannot adapt to the diverse needs of different mold structures and molding processes. Existing control methods are difficult to effectively intervene in the abnormal material flow caused by fixed outlet lengths, which easily leads to material blockage and accumulation. This not only reduces production efficiency but may also cause uneven plasticization of materials. The device is designed with an adjustable outlet length and anti-blockage and anti-accumulation structure in the extruder, and incorporates the automotive safety component MIM injection control device. This device can flexibly adapt to different molds, optimize material flow, effectively prevent feed blockage and accumulation, improve the production quality and efficiency of automotive safety components, and provide more flexible and precise control, overcoming the shortcomings of existing technologies. Example

[0025] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the technical solution in this application embodiment effectively solves the problem that traditional fixed-length outlets cannot adapt to the diverse needs of different mold structures and molding processes. Existing control methods are difficult to effectively intervene in the abnormal material flow caused by the fixed outlet length, which easily leads to material blockage and accumulation, not only reducing production efficiency but also potentially causing uneven material plasticization. The overall approach is as follows:

[0026] To address the problems existing in the prior art, this utility model provides an automotive safety component MIM injection control device, including a hopper 1 and a cylinder 2. A servo motor 3 is fixedly installed on the upper surface of the hopper 1. A fixed tube 8 is fixedly connected to the lower surface of the cylinder 2. A connecting tube 4 is movably sleeved on the lower surface of the fixed tube 8. A threaded ring 2 12 is threadedly sleeved on the annular side of the fixed tube 8. A threaded ring 1 9 is fixedly connected to the lower surface of the threaded ring 2 12. A spiral rod 7 is provided inside the hopper 1. Two sets of stirring rods 10 are provided inside the hopper 1. A pusher block 11 is provided inside the hopper 1. A fixed block 5 is fixedly connected to the left surface of the hopper 1. A cylinder 6 is fixedly installed on the left surface of the fixed block 5. During use, in... A mixture of metal powder and binder is poured into hopper 1. At this time, servo motor 3 starts and drives the fixed screw rod 7 to rotate. The screw rod 7 extrudes the material. The mixture of metal powder and binder is loose and has a low bulk density. At this time, a set of stirring rods 10 fixed on the surface of the screw rod 7 will break up the nearby accumulated mixture. However, the mixture will still bridge on the inner wall of hopper 1. At this time, the piston of cylinder 6 is activated and drives the fixed push block 11 to move. The push block 11 moves linearly back and forth and pushes the mixture to move together, reducing the bridging and clogging problems caused by the mixture bridging and accumulating in hopper 1, and improving the stability and reliability of feeding.

[0027] The piston of cylinder 6 is fixedly connected to push block 11. Threaded ring 9 is threadedly connected to the upper end of connecting pipe 4. Two connecting rings 13 are fixedly connected to the annular side of screw rod 7. The two connecting rings 13 are fixedly connected to two sets of stirring rods 10 respectively. During discharge, by rotating the combination of threaded ring 9 and threaded ring 12 upward, threaded ring 9 is disengaged from the connection with connecting pipe 4, opening the limit. At this time, connecting pipe 4 can move telescopically on fixed pipe 8. After adjusting connecting pipe 4 to the required length, rotating the combination of threaded ring 9 and threaded ring 12 downward resets the connection, making connecting pipe 4 and fixed pipe 8 in a limited and fixed state. For some molds with complex structures or special requirements, the adjustable extruder outlet length can better adapt to the installation space and position requirements of the mold, making the connection between the extruder and the mold tighter and more accurate, preventing material leakage, and making the control more flexible, ensuring the smooth progress of the injection molding process.

[0028] Among them, hopper 1 is used to store the mixture of metal powder and binder to provide material for the extruder, and its internal structure is designed to prevent material blockage and accumulation.

[0029] The material barrel 2 provides space for heating and plasticizing the material, ensuring that the material is plasticized and flows stably at a suitable temperature;

[0030] Servo motor 3 provides power for the rotation of screw 7, driving screw 7 to extrude material and control the material extrusion process;

[0031] The connecting pipe 4 can extend and retract on the fixed pipe 8 to adjust the extruder outlet length and adapt to the installation and connection requirements of different molds;

[0032] The fixing block 5 is used to fix the cylinder 6, providing an installation position for the cylinder 6 and ensuring its stable operation;

[0033] The cylinder 6 drives the pusher block 11 to move linearly and reciprocally through the piston, pushing the mixture in the hopper 1 to prevent material bridging, accumulation and blockage;

[0034] The screw rod 7 rotates under the drive of the servo motor 3, extruding the material and discharging it. The stirring rod 10 on the surface can also break up the mixture piled up nearby.

[0035] The fixed tube 8 connects the material cylinder 2 and the connecting tube 4, providing a basis for the movable connection of the connecting tube 4 and ensuring the realization of its adjustable function.

[0036] Threaded ring 9 is threadedly fitted onto the upper end of connecting pipe 4, and works with threaded ring 12 to fix or loosen connecting pipe 4, thereby adjusting the outlet length.

[0037] The stirring rod 10 is fixed to the surface of the screw rod 7 and rotates with the screw rod 7 to break up the nearby accumulated mixture and facilitate the smooth feeding of materials;

[0038] The pusher block 11 moves under the drive of the cylinder 6, pushing the mixture in the hopper 1 to reduce the blockage caused by bridging and accumulation of materials on the inner wall of the hopper 1;

[0039] The threaded ring 12 and the threaded ring 9 work together to limit and fix or loosen the connecting pipe 4 by rotation, so as to facilitate adjustment of the outlet length;

[0040] The connecting ring 13 is fixed on the screw rod 7 and is used to connect the stirring rod 10 so that the stirring rod 10 can rotate and work together with the screw rod 7.

[0041] Working principle:

[0042] During operation, a mixture of metal powder and binder is poured into hopper 1. The servo motor 3 starts, driving the fixed screw 7 to rotate. The screw 7 extrudes the material. The mixture of metal powder and binder is loose and has low bulk density. A set of agitators 10 fixed to the surface of the screw 7 breaks up the nearby accumulated mixture. However, bridging of the mixture still occurs on the inner wall of hopper 1. At this point, the piston of cylinder 6 is activated, driving the fixed pusher 11 to move. The pusher 11 moves linearly back and forth, pushing the mixture along with it, reducing bridging and clogging caused by the mixture bridging and accumulating in hopper 1, improving the stability and reliability of the feeding process. During material handling, by rotating the combination of threaded ring 9 and threaded ring 12 upwards, threaded ring 9 is disengaged from the connecting pipe 4, opening the limit switch. At this time, the connecting pipe 4 can extend and retract on the fixed pipe 8. After adjusting the connecting pipe 4 to the required length, rotating the combination of threaded ring 9 and threaded ring 12 downwards resets the connection, making the connecting pipe 4 and the fixed pipe 8 in a limited and fixed state. For some molds with complex structures or special requirements, the adjustable extruder outlet length can better adapt to the installation space and position requirements of the mold, making the connection between the extruder and the mold tighter and more accurate, preventing material leakage, and making the control more flexible, ensuring the smooth progress of the injection molding process.

[0043] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. An automobile safety part MIM injection regulating device, comprising a hopper (1) and a barrel (2), a servo motor (3) is fixedly installed on the upper surface of the hopper (1), characterized in that, A fixing tube (8) is fixedly connected to the lower surface of the material cylinder (2), and a connecting tube (4) is movably sleeved on the lower surface of the fixing tube (8). Among them, the fixed tube (8) is threaded with a threaded ring two (12) on the annular side, and the threaded ring two (12) is fixedly connected with a threaded ring one (9) on the lower surface. The hopper (1) is provided with a spiral rod (7), the hopper (1) is provided with two sets of stirring rods (10), and the hopper (1) is provided with a push block (11).

2. The MIM injection apparatus for automotive safety parts according to claim 1, wherein: A fixing block (5) is fixedly connected to the left surface of the hopper (1); A cylinder (6) is fixedly installed on the left surface of the fixing block (5).

3. The MIM injection apparatus for automotive safety parts according to claim 2, wherein: The piston of the cylinder (6) is fixedly connected to the push block (11).

4. The automotive safety component MIM injection control device as described in claim 1, characterized in that: The threaded ring (9) is threadedly connected to the upper end of the connecting pipe (4).

5. The MIM injection apparatus for automotive safety parts of claim 1, wherein: The spiral rod (7) has two connecting rings (13) fixedly connected to its annular side.

6. The MIM injection apparatus for automotive safety parts according to claim 5, wherein: The two connecting rings (13) are fixedly connected to the two sets of stirring rods (10) respectively.

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