Multi-code-channel encoder magnetic ring orientation die

Abstract

The utility model provides a multi-code-channel encoder magnetic ring orientation mould which comprises a fixed mould assembly and a movable mould assembly which are oppositely arranged, a first magnet and an injection molding nozzle are arranged in the fixed mould assembly, a second magnet and an ejector rod are arranged in the movable mould assembly, the second magnet and the first magnet are oppositely arranged and are opposite in polarity, and the ejector rod is arranged in the fixed mould assembly. The top surface of the movable mold assembly is provided with a magnetic ring cavity between the first magnet and the second magnet, the ejector rod is axially arranged in a sliding manner and is opposite to the injection molding nozzle, and the top surface of the ejector rod is provided with an injection molding runner communicated with the magnetic ring cavity. The multi-code-channel encoder magnetic ring orientation die provided by the utility model has the advantages of uniform magnetic field intensity and magnetic pole distribution and the like, and can ensure that the produced magnetic ring can meet the requirements of high precision, high reliability and the like of an encoder in various aspects.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, specifically to a multi-track encoder magnetic ring orientation mold. Background Technology

[0002] Encoder magnetic rings are widely used in many fields such as robots, logistics vehicles, automated machine tools, and textile machinery. In the process of magnetic ring forming, the orientation of magnetic powder is a key technical challenge. Orientation methods such as the principle of repulsion between like magnetic poles may result in incomplete magnetic powder orientation, leading to poor axial uniformity. Against the backdrop of global energy conservation and emission reduction, the market demand for green, efficient, energy-saving, and environmentally friendly motors is increasing. The development of the motor industry is driving the development of encoder magnetic ring mold technology to meet market demands. Utility Model Content

[0003] To overcome the shortcomings of existing technologies, this utility model provides a multi-track encoder magnetic ring orientation mold, which has advantages such as magnetic field strength and uniform magnetic pole distribution, and can ensure that the produced magnetic ring can meet the requirements of encoder in terms of high precision and high reliability in all aspects.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A multi-track encoder magnetic ring orientation mold includes a fixed mold assembly and a moving mold assembly arranged opposite to each other. The fixed mold assembly is provided with a first magnet and an injection nozzle, and the moving mold assembly is provided with a second magnet and an ejector rod. The second magnet is arranged opposite to the first magnet and has opposite polarity. The top surface of the moving mold assembly is provided with a magnetic ring cavity between the first magnet and the second magnet. The ejector rod is axially slidably arranged and opposite to the injection nozzle. The top surface of the ejector rod is provided with an injection flow channel communicating with the magnetic ring cavity.

[0006] Furthermore, the moving mold assembly is provided with an elastic element for driving the push rod to reset.

[0007] Furthermore, the bottom of the moving mold assembly is provided with an ejection hole that connects to the ejector rod.

[0008] Furthermore, the moving mold assembly is provided with a sliding cavity, the bottom end of the push rod is connected to a push plate, and the elastic element is connected to both sides of the push plate and its other end is fixedly connected to the wall of the sliding cavity.

[0009] Furthermore, the first magnet is fixed to the bottom of the fixed mold assembly by a first insert.

[0010] Furthermore, the second magnet is fixed to the top of the moving mold assembly by a second insert, and the magnetic ring cavity is located on the top surface of the second insert.

[0011] Furthermore, the fixed mold assembly consists of a fixed mold base plate and a fixed mold template, arranged from top to bottom.

[0012] Furthermore, the moving mold assembly consists of a moving template, a pad, and a moving mold base plate, from top to bottom.

[0013] Compared with the prior art, the present invention has the following beneficial technical effects:

[0014] The multi-track encoder magnetic ring orientation mold of this utility model, through the action of the first magnet and the second magnet set above and below the magnetic ring cavity, can make the magnetic field strength and magnetic pole distribution of the formed magnetic ring uniform, so that the product can meet the requirements of encoder in terms of high precision and high reliability in all aspects. Attached Figure Description

[0015] Figure 1 This is a structural diagram of a magnetic ring orientation mold for a multi-track encoder according to this utility model.

[0016] The components are: 1. First magnet; 2. Injection nozzle; 3. Second magnet; 4. Ejector rod; 5. Magnetic ring cavity; 6. Elastic element; 7. Ejection hole; 8. Push plate; 9. Push plate fixing plate; 10. First insert; 11. Second insert; 12. Fixed mold base plate; 13. Fixed template; 14. Moving template; 15. Spacer block; 16. Moving mold base plate. Detailed Implementation

[0017] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0018] Example 1

[0019] like Figure 1 As shown, a multi-track encoder magnetic ring orientation mold includes a fixed mold assembly and a moving mold assembly arranged opposite to each other. The fixed mold assembly contains a first magnet 1 and an injection nozzle 2, while the moving mold assembly contains a second magnet 3 and an ejector rod 4. The second magnet 3 is arranged opposite to the first magnet 1 and has opposite polarities. The top surface of the moving mold assembly has a magnetic ring cavity 5 located between the first magnet 1 and the second magnet 3. The ejector rod 4 is axially slidable and opposite to the injection nozzle 2, and its top surface has an injection flow channel communicating with the magnetic ring cavity 5.

[0020] Furthermore, the moving mold assembly includes an elastic element 6 that drives the ejector rod 4 to reset, so that the ejector rod 4 automatically resets after the magnetic ring is removed. The elastic element 6 can be a sheet or a spring. The bottom of the moving mold assembly has an ejection hole 7 that connects to the ejector rod 4. By inserting a rod into the ejection hole 7, the ejector rod 4 can be pushed upward.

[0021] The moving mold assembly has a sliding cavity. A push plate 8 is fixedly connected to the bottom end of the ejector rod 4. An elastic element 6 is connected to both sides of the push plate 8, with its other end fixedly connected to the wall of the sliding cavity. Alternatively, the elastic element 6 can also be sleeved around the ejector rod 4. A push plate fixing plate 9 is connected to the bottom of the push plate 8.

[0022] The first magnet 1 is fixed to the bottom of the fixed mold assembly by the first insert 10. The second magnet 3 is fixed to the top of the moving mold assembly by the second insert 11, and the magnetic ring cavity 5 is disposed on the top surface of the second insert 11. Preferably, the first insert 10 and the second insert 11 are both made of non-magnetic steel; the first magnet 1 and the second magnet 3 are extremely strong permanent magnets.

[0023] The fixed mold assembly can be integrally molded or assembled; in this embodiment, the latter is preferred. The fixed mold assembly consists of a fixed mold base plate 12 and a fixed mold template 13 from top to bottom, with the injection nozzle 2 inserted into the middle of the fixed mold base plate 12 and the fixed mold template 13.

[0024] The moving mold assembly can be integrally formed or assembled; in this embodiment, the latter is preferred. The moving mold assembly consists of a moving template 14, a pad 15, and a moving mold base plate 16 from top to bottom. The space between the two pads 15 forms a sliding cavity, and the ejection hole 7 is located in the middle of the moving mold base plate 16.

[0025] The multi-track encoder magnetic ring orientation mold of this utility model is used as follows:

[0026] With the fixed mold plate 13 and the moving mold plate 14 in the closed state, the injection magnetic material is injected through the injection nozzle 2 and flows into the magnetic ring cavity 5 through the injection channel on the ejector pin 4. At the same time as injection, the first magnet 1 and the second magnet 3 are evenly oriented towards the formed magnetic ring. After the magnetic ring cools, the moving mold base plate 16 moves downward, driving the moving mold plate 14 to open the mold. The ejector pin 4 is pushed by an external rod inserted through the ejector hole 7. The ejector pin 4 moves upward to push out the magnetic ring. After the magnetic ring is removed, the moving mold base plate 16 returns to its original position. At the same time, the elastic element 6 resets the ejector pin 4, thereby completing the product injection molding cycle.

[0027] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. However, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-track encoder magnetic ring orientation mold, characterized by: The device includes a fixed mold assembly and a moving mold assembly arranged opposite to each other. The fixed mold assembly contains a first magnet and an injection nozzle, and the moving mold assembly contains a second magnet and an ejector rod. The second magnet is arranged opposite to the first magnet and has opposite polarity. The top surface of the moving mold assembly has a magnetic ring cavity between the first magnet and the second magnet. The ejector rod is axially slidable and opposite to the injection nozzle. The top surface of the ejector rod has an injection flow channel communicating with the magnetic ring cavity.

2. The multi-track encoder magnetic ring orientation mold of claim 1, wherein: The moving mold assembly is equipped with an elastic element that drives the push rod to reset.

3. The multi-track encoder ring orientation mold of claim 2, wherein: The bottom of the moving mold assembly is provided with an ejection hole that connects to the ejector rod.

4. The multi-track encoder ring orientation mold of claim 3, wherein: The moving mold assembly has a sliding cavity, the bottom end of the push rod is connected to a push plate, and the elastic element is connected to both sides of the push plate and the other end is fixedly connected to the wall of the sliding cavity.

5. The multi-track encoder magnetic ring orientation mold according to claim 4, characterized in that: The first magnet is fixed to the bottom of the fixed mold assembly by a first insert.

6. The multi-track encoder ring orientation mold of claim 5, wherein: The second magnet is fixed to the top of the moving mold assembly by a second insert, and the magnetic ring cavity is located on the top surface of the second insert.

7. The multi-track encoder magnetic ring orientation mold of claim 6, wherein: The fixed mold assembly consists of a fixed mold base plate and a fixed mold template, from top to bottom.

8. The multi-track encoder magnetic ring orientation mold of claim 7, wherein: The moving mold assembly consists of a moving template, a pad, and a moving mold base plate, from top to bottom.

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