Injection magnetic encoder production process taking novel material as carrier

Abstract

The invention relates to the field of encoder production films, in particular to an injection magnetic encoder production process taking a novel material as a carrier, which comprises the following preparation steps: preparing a framework processed according to a specified shape and a material of a plastic magnetic structure; the method comprises the following steps of: 1, setting a framework in a cavity of an injection molding machine, integrally forming a plastic magnetic structure on a corresponding part of the framework through embedded injection molding, and if the plastic magnetic structure adopts anisotropic magnetic powder, carrying out magnetic field orientation and magnetic field molding at the same time as the embedded injection molding; according to the injection type magnetic encoder, the novel material TPE is used as a carrier and mixed with the magnetic powder, injection molding is conducted in a vertical mode, orientation design does not need to be conducted on an injection mold, and the conventional tedious processes that other materials need cooling water mold cooling and the like are reduced.

Description

Technical Field

[0001] The invention relates to the field of encoder production films, in particular to a production process of an injection magnetic encoder using a new material as a carrier. Background Art

[0002] Magnetic encoders, as an important position and speed detection device, operate based on magnetic field variations to detect the position, speed, and direction of rotational or linear motion. Compared to optical encoders, magnetic encoders offer advantages such as strong resistance to contamination, adaptability to harsh environments, and low cost, leading to their widespread use in the industrial and automotive sectors.

[0003] In the existing encoder production film production process, traditional magnetic encoders are vulcanized by vulcanizing molding. The production process is cumbersome, the production capacity is low, and the defect rate is high. With the rapid development of industrial automation, robotics technology, new energy vehicles and other fields, higher requirements are placed on the accuracy, reliability and cost of magnetic encoders. The performance of traditional magnetic encoders can no longer meet these requirements. There is an urgent need to develop a new type of magnetic encoder and its production process. Summary of the Invention

[0004] The purpose of the present invention is to solve the shortcomings of the background technology and to propose a production process for an injection magnetic encoder using a new material as a carrier.

[0005] In order to achieve the above objectives, the technical solution adopted by the present invention is: a production process of injection magnetic encoder using new materials as carriers,

[0006] Preparation steps: prepare the skeleton and the materials of the plastic magnetic structure processed according to the specified shape;

[0007] The first step is to place the skeleton in the cavity of the injection molding machine and integrally form the plastic magnetic structure on the corresponding part of the skeleton through insert molding. If the plastic magnetic structure uses anisotropic magnetic powder, magnetic field orientation and magnetic field molding are performed simultaneously with the insert molding. The second step is to fill the gap between the skeleton and the plastic magnetic structure generated during the injection molding process with a sealing agent in the integrally molded part of the skeleton and the plastic magnetic structure removed from the injection molding machine, thereby bonding the skeleton and the plastic magnetic structure.

[0008] The third step: For the one-piece molded part of the sealed skeleton and plastic magnetic structure, the residual magnetism during the magnetic field orientation in the first step is completely demagnetized, and the plastic magnetic structure is magnetized using a magnetic yoke that meets the required accuracy to complete the manufacture of the magnetic encoder.

[0009] Preferably, in the second step, the treatment method is to place the one-piece molded part into a molten sealing treatment agent, soak the sealing treatment agent into the gap between the skeleton and the plastic magnetic structure, then take out the one-piece molded part from the sealing treatment agent, heat the one-piece molded part, and solidify the sealing treatment agent inside the gap.

[0010] Preferably, the processing equipment in step one includes a shell assembly, including a chassis, and a mold fixedly mounted on the top of the chassis, support rods are fixedly mounted on both sides of the top of the chassis; a rotating assembly, including a transport plate rotatably mounted on the top of the chassis, the transport plate slides in the mold, and a rotating drum is fixedly mounted on the middle part of the top of the transport plate; and an injection assembly, including an injection tube fixedly mounted on the top of the support rod, a slide groove is provided on the top of the injection tube, a slide rod is slidably mounted in the slide groove, a liquid storage tube is slidably mounted inside the injection tube, and a liquid outlet tube is fixedly mounted on the bottom end of the liquid storage tube.

[0011] Preferably, a fixing plate is fixedly installed inside the chassis, a servo motor is fixedly installed on the front side of the bottom end of the fixing plate, a turntable is fixedly installed on the output end of the servo motor, a protrusion is fixedly installed on the top side of the turntable, and a polygonal gear disk is rotatably installed in the middle of the fixing plate.

[0012] Preferably, the polygonal toothed disc is rotatably connected to the transport disc.

[0013] Preferably, a first bevel gear is fixedly mounted on the top of the rotating drum, a support column is rotatably mounted on the top of the first bevel gear, a rotating rod is rotatably mounted on the middle of the supporting column, and a second bevel gear is fixedly mounted on the middle of the rotating rod.

[0014] Preferably, the first bevel gear is meshingly connected with the second bevel gear.

[0015] Preferably, a disc is fixedly mounted on the end of the rotating rod, a sliding disc is rotatably mounted on the top right side of the disc, a slideway is fixedly mounted on the left end of the sliding rod, and the sliding disc slides inside the slideway.

[0016] Preferably, the end of the sliding rod is fixedly connected to the liquid storage tube, and limiting rods are fixedly installed on both sides of the liquid storage tube. Limiting plates are fixedly installed on both sides of the injection tube, and the limiting rods slide in the limiting plates.

[0017] Preferably, a spring is provided on the outer wall of the liquid outlet tube, a limiting ring is fixedly installed inside the bottom end of the injection tube, and both ends of the spring are fixedly connected to the limiting ring and the liquid storage tube respectively.

[0018] Compared with the existing technology, the present invention has the following beneficial effects: an injection-type magnetic encoder using a new material TPE as a carrier mixed with magnetic powder is injection molded in a vertical manner, and the injection mold does not require orientation design, reducing the conventional cumbersome process such as cooling water mold cooling required for other materials.

[0019] The second rotating rod drives the rotating wheel to roll on the material disc, which in turn drives the rotation of the bidirectional screw, so that the two sets of movable plates can drive the conical rake to comb the high-performance polymer material. The irregular movement path allows the high-performance polymer material to be fully dispersed, and the high-performance polymer material and the grinding mixture are fully integrated to prevent accumulation, thereby greatly improving the grinding efficiency. The screw allows the two sets of gaskets and springs to squeeze the grinding disc downward, and cooperates with the second universal joint to make the grinding disc rotate downward while grinding, which can better grind the high-performance polymer material, improve its grinding quality, and achieve better grinding effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic structural diagram of a production process for an injection magnetic encoder using a novel material as a carrier according to an embodiment of the present invention;

[0021] Figure 2 A schematic side view of a production process for an injection magnetic encoder using a novel material as a carrier according to an embodiment of the present invention;

[0022] Figure 3 A schematic structural diagram of a rotating assembly in a production process of an injection magnetic encoder using a new material as a carrier according to an embodiment of the present invention;

[0023] Figure 4 A schematic diagram of a driving structure of a rotating assembly in a production process of an injection magnetic encoder using a new material as a carrier according to an embodiment of the present invention;

[0024] Figure 5 A schematic diagram of the structure of an injection assembly in a production process of an injection magnetic encoder using a new material as a carrier according to an embodiment of the present invention;

[0025] Figure 6 A schematic diagram of the internal structure of an injection component in a production process of an injection magnetic encoder using a new material as a carrier according to an embodiment of the present invention.

[0026] In the figure: 100, housing assembly; 101, chassis; 102, mold; 103, support rod; 200, rotating assembly; 201, fixed plate; 202, servo motor; 203, turntable; 204, bump; 205, polygonal gear disk; 206, transport disk; 207, rotating drum; 300, injection assembly; 301, first bevel gear; 302, support column; 303, rotating rod; 304, second bevel gear; 305, disc; 306, sliding disc; 307, slide; 308, slide rod; 309, injection tube; 310, liquid storage tube; 311, liquid outlet tube; 312, limit rod; 313, limit plate; 314, spring; 315, limit ring. DETAILED DESCRIPTION

[0027] The following description is intended to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are merely examples, and those skilled in the art may conceive of other obvious variations.

[0028] like Figure 1 - Figure 6 The production process of an injection magnetic encoder using a new material as a carrier is shown.

[0029] Preparation steps: prepare the skeleton and the materials of the plastic magnetic structure processed according to the specified shape;

[0030] The first step is to place the skeleton in the cavity of the injection molding machine and integrally form the plastic magnetic structure on the corresponding part of the skeleton through insert molding. If the plastic magnetic structure uses anisotropic magnetic powder, magnetic field orientation and magnetic field molding are performed simultaneously with the insert molding. The second step is to fill the gap between the skeleton and the plastic magnetic structure generated during the injection molding process with a sealing agent in the integrally molded part of the skeleton and the plastic magnetic structure removed from the injection molding machine, thereby bonding the skeleton and the plastic magnetic structure.

[0031] The third step: for the one-piece molded part of the skeleton and the plastic magnetic structure that has been sealed, the residual magnetism during the magnetic field orientation in the first step is completely demagnetized, and the plastic magnetic structure is magnetized using a magnetic yoke that meets the required accuracy to complete the manufacture of the magnetic encoder. In the second step, the treatment method is to put the one-piece molded part into the molten sealing treatment agent, soak the sealing treatment agent in the gap between the skeleton and the plastic magnetic structure, then remove the one-piece molded part from the sealing treatment agent, and heat the one-piece molded part to make the sealing treatment inside the gap The processing equipment in step 1 includes a housing assembly 100, including a chassis 101, and a mold 102 fixedly installed on the top of the chassis 101. Support rods 103 are fixedly installed on both sides of the top of the chassis 101. NdFeB magnetic powder, thermoplastic resin and additives are mixed together in a certain proportion; plastic magnetic granules are made by a granulator; the required magnets are injection-molded by an injection molding machine and a mold 102, and the shape of the mold 102 corresponds to the desired shape of the final product; cooling and demoulding; magnetization or non-magnetization is performed according to demand.

[0032] The rotating assembly 200 includes a transport plate 206 rotatably mounted on the top of the chassis 101. The transport plate 206 slides in the mold 102. A rotating drum 207 is fixedly mounted on the top middle of the transport plate 206. When the transport plate 206 rotates, the rotating drum 207 is driven to rotate. A fixed plate 201 is fixedly mounted inside the chassis 101. A servo motor 202 is fixedly mounted on the bottom front side of the fixed plate 201. A turntable 203 is fixedly mounted on the output end of the servo motor 202. A bump is fixedly mounted on one side of the top of the turntable 203. 204, the output end of the servo motor 202 drives the turntable 203 to rotate. When rotating, the turntable 203 drives the protrusion 204 to make a circular motion. The middle part of the fixed plate 201 is rotatably installed with a polygonal gear disc 205. The polygonal gear disc 205 is rotatably connected to the transport disc 206. The polygonal gear disc 205 is composed of multiple groups of semicircles and cooperates with the protrusion 204. When the protrusion 204 is in the groove of the polygonal gear disc 205, the polygonal gear disc 205 is rotated. When the protrusion 204 is outside the polygonal gear disc 205, the polygonal gear disc 205 stops rotating.

[0033] The injection assembly 300 includes an injection tube 309 fixedly mounted on the top of the support rod 103. A slide groove is provided on the top of the injection tube 309. A slide rod 308 is slidably mounted in the slide groove. A liquid storage tube 310 is slidably mounted inside the injection tube 309. An external connecting tube is connected to the top of the liquid storage tube 310 for conveying plastic magnetic particles. When the slide rod 308 slides, the liquid storage tube 310 is driven to slide up and down in the injection tube 309. A liquid outlet pipe 311 is fixedly mounted on the bottom end of the liquid storage tube 310. The liquid outlet pipe 311 moves with the liquid storage tube 310. The top of the cylinder 207 is fixedly mounted with a first bevel gear 301, and the top of the first bevel gear 301 is rotatably mounted with a support column 302. When the first bevel gear 301 rotates, it does not affect the support column 302. The middle of the support column 302 is rotatably mounted with a rotating rod 303, and the middle of the rotating rod 303 is fixedly mounted with a second bevel gear 304. The first bevel gear 301 is meshed with the second bevel gear 304. The end of the rotating rod 303 is fixedly mounted with a disc 305, and the disc 305 rotates with the second bevel gear 304. 5 is rotatably mounted on the top right side of the disc 305. When the disc 305 rotates, the sliding disc 306 is driven to make a circular motion. The left end of the slide bar 308 is fixedly mounted with a slideway 307. The sliding disc 306 slides inside the slideway 307. The circular motion of the sliding disc 306 slides left and right inside the slideway 307, and at the same time drives the slideway 307 to move up and down. The end of the slide bar 308 is fixedly connected to the liquid storage tube 310. The two sides of the liquid storage tube 310 are fixedly mounted with limit rods 312. The two sides of the injection tube 309 are fixedly mounted with limit plates. 313, the limiting rod 312 slides in the limiting plate 313, and the cylinder of the limiting rod 312 slides in the circular hole on the limiting plate 313 to prevent deviation during injection. The outer wall of the liquid outlet tube 311 is provided with a spring 314, and a limiting ring 315 is fixedly installed inside the bottom end of the injection tube 309. The two ends of the spring 314 are fixedly connected to the limiting ring 315 and the liquid storage tube 310 respectively. The spring 314 is used to offset the shaking generated during injection. At the same time, the liquid storage tube 310 and the liquid outlet tube 311 are rebounded by elastic force after the injection is completed.

[0034] The servo motor 202 is started, and the output end of the servo motor 202 drives the turntable 203 to rotate. When the turntable 203 rotates, the protrusion 204 makes a circular motion, and then drives the polygonal gear disc 205 to rotate intermittently. The polygonal gear disc 205 drives the transport disc 206 to transport the skeleton into the mold 102. At this time, when the transport disc 206 rotates, it drives the rotating drum 207 to rotate. The first bevel gear 301 installed on the rotating drum 207 rotates intermittently, and through meshing transmission, the second bevel gear 304 rotates, and the disc 305 rotates. 05 rotates together with the second bevel gear 304. When the disc 305 rotates, it drives the sliding disc 306 to make a circular motion. The circular motion of the sliding disc 306 slides left and right in the slide 307, and at the same time drives the slide 307 to move up and down, so that the liquid storage tube 310 and the liquid outlet tube 311 cooperate to inject the skeleton. After the injection is completed, the transport disc 206 rotates to rotate the skeleton, the liquid storage tube 310 and the liquid outlet tube 311 rebound, and the new skeleton is rotated into the mold 102 for a new injection.

[0035] The above shows and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions merely illustrate the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the appended claims and their equivalents.

Claims

1. A production process for an injection magnetic encoder using a new material as a carrier, characterized by: Preparation steps: prepare the skeleton and the materials of the plastic magnetic structure processed according to the specified shape; The first step is to place the skeleton in the cavity of the injection molding machine and integrally form the plastic magnetic structure on the corresponding part of the skeleton through insert molding. If the plastic magnetic structure uses anisotropic magnetic powder, magnetic field orientation and magnetic field molding are performed simultaneously with the insert molding. The second step is to fill the gap between the skeleton and the plastic magnetic structure generated during the injection molding process with a sealing agent in the integrally molded part of the skeleton and the plastic magnetic structure removed from the injection molding machine, thereby bonding the skeleton and the plastic magnetic structure. The third step: For the one-piece molded part of the sealed skeleton and plastic magnetic structure, the residual magnetism during the magnetic field orientation in the first step is completely demagnetized, and the plastic magnetic structure is magnetized using a magnetic yoke that meets the required accuracy to complete the manufacture of the magnetic encoder.

2. The production process of an injection magnetic encoder using a new material as a carrier according to claim 1 is characterized in that: In the second step, the treatment method is to put the one-piece molded part into the molten sealing treatment agent, soak the sealing treatment agent into the gap between the skeleton and the plastic magnetic structure, then take out the one-piece molded part from the sealing treatment agent, heat the one-piece molded part, and solidify the sealing treatment agent inside the gap.

3. The production process of an injection magnetic encoder using a new material as a carrier according to claim 2 is characterized in that: The processing equipment in step 1 includes a housing assembly (100), including a chassis (101), and a mold (102) fixedly mounted on the top of the chassis (101), support rods (103) fixedly mounted on both sides of the top of the chassis (101); a rotating assembly (200), including a transport plate (206) rotatably mounted on the top of the chassis (101), the transport plate (206) slides in the mold (102), and a rotating drum (207) is fixedly mounted on the middle of the top of the transport plate (206); and an injection assembly (300), including an injection tube (309) fixedly mounted on the top of the support rod (103), a slide groove is provided at the top of the injection tube (309), a slide rod (308) is slidably mounted in the slide groove, a liquid storage tube (310) is slidably mounted inside the injection tube (309), and a liquid outlet tube (311) is fixedly mounted at the bottom end of the liquid storage tube (310).

4. The production process of an injection magnetic encoder using a new material as a carrier according to claim 3 is characterized in that: A fixing plate (201) is fixedly mounted inside the chassis (101), a servo motor (202) is fixedly mounted on the front side of the bottom end of the fixing plate (201), a turntable (203) is fixedly mounted on the output end of the servo motor (202), a bump (204) is fixedly mounted on one side of the top of the turntable (203), and a polygonal gear disc (205) is rotatably mounted in the middle of the fixing plate (201).

5. The production process of an injection magnetic encoder using a new material as a carrier according to claim 4 is characterized in that: The polygonal toothed disc (205) is rotatably connected to the transport disc (206).

6. The production process of an injection magnetic encoder using a new material as a carrier according to claim 5, characterized in that: A first bevel gear (301) is fixedly mounted on the top of the rotating drum (207), a support column (302) is rotatably mounted on the top of the first bevel gear (301), a rotating rod (303) is rotatably mounted in the middle of the supporting column (302), and a second bevel gear (304) is fixedly mounted in the middle of the rotating rod (303).

7. The production process of an injection magnetic encoder using a new material as a carrier according to claim 6, characterized in that: The first bevel gear (301) is meshedly connected with the second bevel gear (304).

8. The production process of an injection magnetic encoder using a new material as a carrier according to claim 7, characterized in that: A disc (305) is fixedly mounted on the end of the rotating rod (303), a sliding disc (306) is rotatably mounted on the top right side of the disc (305), a slideway (307) is fixedly mounted on the left end of the slide rod (308), and the sliding disc (306) slides inside the slideway (307).

9. The production process of an injection magnetic encoder using a new material as a carrier according to claim 8, characterized in that: The end of the sliding rod (308) is fixedly connected to the liquid storage tube (310), and limiting rods (312) are fixedly installed on both sides of the liquid storage tube (310). Limiting plates (313) are fixedly installed on both sides of the injection tube (309), and the limiting rods (312) slide in the limiting plates (313).

10. The production process of an injection magnetic encoder using a new material as a carrier according to claim 9, characterized in that: The outer wall of the liquid outlet pipe (311) is provided with a spring (314), the bottom end of the injection tube (309) is fixedly installed with a limiting ring (315), and the two ends of the spring (314) are fixedly connected to the limiting ring (315) and the liquid storage pipe (310) respectively.

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