A magnetic material positive and negative electrode screening and marking device

Abstract

A positive and negative screening and marking device for magnetic materials, wherein the magnetic material is in the shape of a cylinder or a cylinder with a convex head, and comprises: a recovery disk, a vibrating discharge disk, a screening mechanism and a marking mechanism; a recovery conveying track is arranged in the recovery disk; the vibrating discharge disk comprises: a vibrating disk base and a spirally extending annular conveying track, the vibrating disk base is arranged in the recovery disk, the recovery conveying track is connected to the vibrating disk base, and the annular conveying track is arranged on the inner side of the vibrating disk base; one end of the first conveying track is connected to the annular conveying track, and the other end of the first conveying track is connected to the second conveying track through a direction adjustment rod; a height limit block is arranged on the second conveying track, and the height limit block is arranged on one side of the second conveying track; a screening slot is also arranged on the side wall of the second conveying track; the marking mechanism comprises: a third conveying track and an inkjet printer, one end of the third conveying track is connected to the annular conveying track, and the inkjet printer is arranged at the other end of the third conveying track.

Description

Technical Field

[0001] The invention relates to the technical field of automation equipment, and in particular to a positive and negative electrode screening and marking device for magnetic materials. Background Art

[0002] Magnetic materials mainly refer to materials composed of transition elements such as iron, cobalt, nickel and their alloys that can directly or indirectly generate magnetism. Magnetic materials usually refer to hard magnetic materials, which are ancient and widely used functional materials. The magnetism of materials has been known and applied by people as early as 3,000 years ago. For example, natural magnets were used as compasses in ancient China. Magnetic materials have been widely used in our lives, such as permanent magnetic materials used as motors, core materials used in transformers, magneto-optical disks used as storage, magnetic recording floppy disks for computers, etc.

[0003] With the development of electronic technology and market demand, electronic products are driven to develop in the direction of high frequency, light weight, miniaturization and high performance. Since soft magnetic materials are not only easily magnetized by an external magnetic field, but also easily demagnetized, they are magnetic materials with very low coercive force. As a result, soft magnetic materials and their technologies are continuously developed. With their convenience of use and good controllability, they have replaced a large number of hard magnetic materials.

[0004] When soft magnetic materials are magnetized, it is usually necessary to magnetize a specific side into a positive pole or a negative pole. However, in the existing market, the screening and marking of the positive and negative poles of magnetic materials are mostly done manually. The picking up and screening of magnetic materials, or the arrangement and marking of magnetic materials, are all done manually. Not only do workers need to sit at their workstations all the time, the labor intensity is high and the efficiency is low, but also when marking, due to the operating errors of workers, it is easy to miss the mark. For the subsequent processed products, the positive and negative poles of the magnetic materials cannot be identified. Summary of the invention

[0005] The technical problem to be solved by the present invention is how to improve the efficiency of screening and marking the positive and negative poles of magnetic materials. Therefore, a device for screening and marking the positive and negative poles of magnetic materials is provided.

[0006] The technical solution of the present invention to solve the above technical problems is as follows: a positive and negative electrode screening and marking device for magnetic materials, wherein the magnetic material is in the shape of a cylinder or a cylinder with a convex head, and comprises: a recovery plate, a vibrating discharge plate, a screening mechanism and a marking mechanism;

[0007] The recovery tray is provided with a recovery conveying track;

[0008] The vibrating discharging tray comprises: a vibrating tray base and a spirally extending annular conveying track, wherein the vibrating tray base is arranged in the recovery tray, the recovery conveying track is connected to the vibrating tray base, and the annular conveying track is arranged on the inner side of the vibrating tray base;

[0009] The screening mechanism comprises: a first conveying track, a second conveying track and a direction adjustment rod, one end of the first conveying track is connected to the annular conveying track, the first conveying track and the second conveying track are annularly arranged on the outer side of the vibration plate base, the other end of the first conveying track is connected to the second conveying track through the direction adjustment rod, and there is a height difference between the first conveying track and the second conveying track;

[0010] A height limiting block is arranged on the side wall of the second conveying track, the height limiting block is arranged on one side of the second conveying track, the vertical height of the height limiting block on the second conveying track is less than the vertical height of the magnetic material, the vertical height of the height limiting block on the second conveying track is greater than the vertical height of the cylindrical portion of the magnetic material, and the width of the height limiting block is less than the distance from the side wall of the second conveying track to the convex head portion of the magnetic material;

[0011] The side wall of the second conveying track is also provided with a screening slot, the length of which is greater than the vertical height of the magnetic product;

[0012] The marking mechanism includes: a third conveying track and an inkjet printer, one end of the third conveying track is connected to the annular conveying track, and the inkjet printer is arranged at the other end of the third conveying track, and the inkjet printer is used to inkjet mark the positive and negative poles of the magnetic products on the third conveying track.

[0013] In one embodiment, the direction adjustment rod is obliquely arranged between the first conveying track and the second conveying track, one end of the direction adjustment rod is fixed on the first conveying track, and the other end of the direction adjustment rod is arranged on the second conveying track.

[0014] In one embodiment, a support rod is provided on the recovery plate, one end of the support rod is fixedly connected to the vibration plate base, and the other end of the support rod is fixedly connected to the outer side of the recovery plate.

[0015] In one embodiment, the number of the support rods is at least 3.

[0016] In one embodiment, the first conveying track, the second conveying track, and the third conveying track are fixed on the support rod.

[0017] In one embodiment, guide rods are rotatably provided at the connection between the annular conveying track and the first conveying track and the third conveying track, and the length of the guide rods is respectively greater than the width of the first conveying track and the width of the third conveying track.

[0018] In one embodiment, the second conveying track is provided with an extension section extending beyond the first conveying track.

[0019] In one embodiment, the recovery conveying track includes: a first recovery conveying track and a second recovery conveying track, the first recovery conveying track is arranged on the inner side of the recovery disk, the second recovery track is arranged on the outer side of the vibration disk base, and the first recovery conveying track is connected to the second recovery conveying track.

[0020] In one embodiment, a recovery hole is provided on the vibration disk base, and the second recovery conveying track is connected to the recovery hole.

[0021] In one embodiment, a fixing seat is provided at the other end of the third conveying track, and the fixing seat is used to fix the inkjet printer and adjust the height of the inkjet printer.

[0022] The beneficial effects of the present invention are as follows: a magnetic material positive and negative pole screening and marking device provided by the present invention is used for marking the positive and negative poles of magnetic materials. The magnetic material is placed in the vibrating disk base of the vibrating discharge disk, and is vibrated and conveyed upward by the annular conveying track. The magnetic material is in the shape of a cylinder with a convex head, and when the convex head part of the magnetic material is required to be at the top, the magnetic material enters the first conveying track. At this time, the magnetic material is in a horizontal placement state. Due to the height difference between the first conveying track and the second conveying track, when the magnetic material is moved to the second conveying track by the direction adjustment rod, the magnetic material is in a vertical placement state. Furthermore, the height limit block is provided on the side wall of the second conveying track. Through the height limit block, the magnetic material with the convex head part at the top can continue to be conveyed through the height limit block. It is sent for the next magnetization treatment, and the magnetic material with the convex head part at the top is screened, while the magnetic material with the convex head part at the bottom cannot pass through, and after falling into the recovery disk, it returns to the vibration disk base through the recovery conveying track for re-screening and marking. Further, when the magnetic material moves to the second conveying track, when the magnetic material is still in a horizontally placed state, after passing through the height limit block, since the length of the screening slot is greater than the length of the magnetic product when it is placed horizontally, it falls from the screening slot on the side wall of the second conveying track into the recovery disk, and then returns to the vibration disk base through the recovery conveying track for re-screening and marking; when the magnetic material is cylindrical in shape, the magnetic material enters the third conveying track, is marked with positive and negative poles when passing through the inkjet printer, and then undergoes the next magnetization treatment. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 This is a schematic structural diagram of a magnetic material positive and negative electrode screening and marking device according to an embodiment of the present invention;

[0025] Figure 2 A schematic diagram of the structure of a magnetic material according to an embodiment of the present invention;

[0026] Figure 3 A schematic structural diagram of a second conveying track according to an embodiment of the present invention;

[0027] Figure 4 The figure is a schematic structural diagram of the connection between the first conveying track and the second conveying track according to an embodiment of the present invention.

[0028] In the accompanying drawings, 100 is a recovery plate, 200 is a vibration plate base, 300 is a circular conveying track, 410 is a first conveying track, 420 is a second conveying track, 421 is a height limit block, 422 is a screening slot, 423 is a separation slot, 430 is a direction adjustment rod, 500 is a third conveying track, 600 is an inkjet printer, and 700 is a support rod. DETAILED DESCRIPTION

[0029] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly understood.

[0030] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0032] like Figure 1 and Figure 2 As shown, in one embodiment, a magnetic material positive and negative electrode screening and marking device includes: a recovery tray 100, a vibrating discharge tray, a screening mechanism and a marking mechanism; a recovery conveying track is arranged in the recovery tray 100; the vibrating discharge tray includes: a vibrating tray base 200 and a spirally extended annular conveying track 300, the vibrating tray base 200 is arranged in the recovery tray 100, the recovery conveying track is connected to the vibrating tray base 200, and the annular conveying track 300 is arranged on the inner side of the vibrating tray base 200.

[0033] In this embodiment, the shape of the magnetic material is cylindrical or cylindrical with a protruding head. When magnetizing, it is usually necessary to magnetize one side of the special pair to a positive pole or a negative pole. Therefore, when magnetizing the cylindrical magnetic material with a protruding head, the magnetic material needs to be uniformly magnetized with the side with the protruding head facing upward, and one side of the cylindrical magnetic material is marked. The recovery plate 100 is bowl-shaped, and the vibrating discharge plate is arranged in the recovery plate 100. The annular conveying track 300 is spirally arranged on the inner wall of the vibrating plate base 200. The vibrating plate base 200 is used to place the magnetic material to be screened or marked. The vibrating plate base 200 vibrates in a vertical direction and performs torsional vibration around its vertical axis, so that the magnetic material spirally rises along the annular conveying track 300 due to such vibration and moves to the exit of the annular conveying track 300.

[0034] like Figure 4 As shown, further, the screening mechanism includes: a first conveying track 410, a second conveying track 420 and a direction adjustment rod 430, one end of the first conveying track 410 is connected to the annular conveying track 300, the first conveying track 410 and the second conveying track 420 are arranged in a ring on the outer side of the vibration disk base 200, the other end of the first conveying track 410 is connected to the second conveying track 420 through the direction adjustment rod 430, and there is a height difference between the first conveying track 410 and the second conveying track 420; a height limit block 421 is arranged on the side wall of the second conveying track 420, and the height limit block 421 is arranged on one side of the second conveying track 420.

[0035] In the present embodiment, the first conveying track 410 and the second conveying track 420 are spirally downward and are arranged on the outer side of the vibration disk base 200. One end of the first conveying track 410 is connected to the annular conveying track 300, and the other end of the first conveying track 410 is connected to the second conveying track 420 to form a screening track for the magnetic material. After the magnetic material with a protruding head enters the first conveying track 410 from the annular conveying track 300, the magnetic material with a protruding head is placed in a horizontal state. Furthermore, there is a height difference between the first conveying track 410 and the second conveying track 420. The direction adjustment rod 430 is tiltedly arranged between the first conveying track 410 and the second conveying track 420. One end of the magnetic material with a protruding head is fixed on the first conveying track 410, and the other end of the direction adjustment rod 430 is arranged on the second conveying track 420. When the magnetic material with a protruding head is moved to the second conveying track 420 through the direction adjustment rod 430, the magnetic material with a protruding head is changed from a horizontal placement state to a vertical placement state. In order to prevent the magnetic material from directly falling onto the recovery plate 100 when it moves to the second conveying track 420, an extension section that exceeds the first conveying track 410 is arranged on the second conveying track 420, and the extension section is correspondingly arranged in a spiral shape. When the magnetic material with a protruding head moves to the second conveying track 420, the magnetic material at this time has the protruding head part at the top, the protruding head part at the bottom or is still in a horizontal placement state.

[0036] In order to further screen the magnetic material with the convex part at the top, the vertical height of the height limit block 421 on the second conveying track 420 is smaller than the vertical height of the magnetic material, the vertical height of the height limit block 421 on the second conveying track 420 is greater than the vertical height of the cylindrical part of the magnetic material, and the width of the height limit block 421 is smaller than the distance from the side wall of the second conveying track 420 to the convex part of the magnetic material.

[0037] like Figure 3As shown, in the present embodiment, a height limit block 421 is provided on the side wall of the second conveying track 420, and the height limit block 421 is provided on the side of the second conveying track 420 close to the vibration disk base 200, and the vertical height of the height limit block 421 on the second conveying track 420 is smaller than the vertical height of the magnetic material, the vertical height of the height limit block 421 on the second conveying track 420 is larger than the vertical height of the cylindrical part of the magnetic material, and the width of the height limit block 421 is smaller than the distance from the side wall of the second conveying track 420 to the convex head part of the magnetic material, so that the magnetic material with the convex head part at the bottom will be blocked by the height limit block 421 and fall into the recovery disk 100, while the magnetic material with the convex head part at the top can be moved to the exit of the second conveying track 420 through the height limit block 421 for the next magnetization treatment. Furthermore, in order to screen the magnetic material in a horizontally placed state, a screening slot 422 is further provided on the side wall of the second conveying track 420, and the section of the second conveying track 420 at the screening slot 422 is inclined toward the screening slot 422. By setting the length of the screening slot 422 to be greater than the vertical height of the magnetic product, and the vertical height of the screening slot 422 is greater than the vertical height of the magnetic material in a horizontally placed state, the magnetic material in a horizontally placed state falls into the recovery plate 100 through the screening slot 422, and then enters the vibration plate base 200 for re-screening. Accordingly, in order to prevent the magnetic material with the convex head part at the top from falling into the recovery plate 100 from the screening slot 422, the vertical height of the screening slot 422 is less than the vertical height of the magnetic material in a vertically placed state. In order to have a better screening effect, the number of the height limit blocks 421 can be set according to the required screening effect, and is not specifically limited here.

[0038] In order to further screen the magnetic material with the convex part at the top, in one embodiment, a separation groove 423 is provided at the bottom of the second conveying track 420. Specifically, the separation groove 423 is provided on the second conveying track 420 after the height limit block 421, and the separation groove 423 is distributed away from the second conveying direction. When the magnetic material with the convex part at the bottom still passes through the height limit block 421, since the width of the separation groove 423 is greater than the length of the convex part of the magnetic material, the convex part at the bottom of the magnetic material enters the separation groove 423, and falls into the recovery disk 100 through the separation groove 423, and then enters the vibration disk base 200 for re-screening. Furthermore, the width of the separation groove 423 is less than the diameter of the bottom of the circular surface of the magnetic material, so that the magnetic material with the convex part at the top can pass through the separation groove 423. The number of the separation grooves 423 can be set according to the desired screening effect, and is not specifically limited here.

[0039] In order to allow the magnetic materials that have fallen into the recovery tray 100 to re-enter the vibration tray base 200, in one embodiment, the recovery conveying track includes: a first recovery conveying track and a second recovery conveying track, wherein the first recovery conveying track is arranged on the inner side of the recovery tray 100, and the second recovery conveying track is arranged on the outer side of the vibration tray base 200, and the first recovery conveying track is connected to the second recovery conveying track. Specifically, a recovery conveying track is arranged in the recovery disk 100, and the recovery conveying track includes: a first recovery conveying track and a second recovery conveying track, the first recovery conveying track is arranged on the inner wall of the recovery disk 100 in a spiral downward shape, and the second recovery conveying track is arranged on the outer side of the vibration disk base 200 in a spiral upward shape, and the first recovery track and the second recovery track are connected. Furthermore, a recovery hole is arranged on the vibration disk base 200, and the second recovery conveying track is connected to the recovery hole. The magnetic material moves downward to the second recovery conveying track by gravity, and then vibrates vertically through the vibration disk base 200, and performs torsional pendulum vibration around its vertical axis, so that the magnetic material spirally rises along the second recovery conveying track due to the vibration, and enters the vibration disk base 200 through the recovery hole.

[0040] Furthermore, in order to mark one side of the cylindrical magnetic material, the marking mechanism includes: a third conveying track 500 and an inkjet printer 600, one end of the third conveying track 500 is connected to the annular conveying track 300, and the inkjet printer 600 is arranged at the other end of the third conveying track 500, and the inkjet printer 600 is used to inkjet mark the positive and negative poles of the magnetic products on the third conveying track 500.

[0041] In this embodiment, the marking mechanism includes: a third conveying track 500 and a printer 600, the third conveying track 500 is arranged in parallel with the first conveying track 410 and the second conveying track 420, the third conveying track 500 is spirally downward and annularly arranged on the outer side of the vibration disk base 200, one end of the third conveying track 500 is connected to the annular conveying track 300, and the entrance of the third conveying track 500 is a slope, so that the curved surface of the cylindrical magnetic material can be on the third conveying track The magnetic material rolls on the third conveying track 500, and a fixed seat is provided at the other end of the third conveying track 500. The inkjet printer 600 is installed on the fixed seat. When the cylindrical magnetic material moves to the inkjet printer 600, due to the increase in the width of the third conveying track 500, a circular surface of the cylindrical magnetic material can face the inkjet printer 600. The distance between the inkjet printer 600 and the magnetic material is adjusted by the fixed seat, so that the inkjet printer 600 can mark the surface of the magnetic material, which is convenient for subsequent magnetization treatment.

[0042] Exemplarily, the present invention provides a magnetic material positive and negative pole screening and marking device, which is used for marking the positive and negative poles of magnetic materials. The magnetic material is placed in the vibrating disk base 200 of the vibrating discharge disk, and is vibrated and conveyed upward by the annular conveying track 300. The magnetic material is in the shape of a cylinder with a convex head, and when the convex head part of the magnetic material is required to be at the top, the magnetic material enters the first conveying track 410. At this time, the magnetic material is in a horizontal placement state. Due to the height difference between the first conveying track 410 and the second conveying track 420, when the magnetic material is moved to the second conveying track 420 through the direction adjustment rod 430, the magnetic material is in a vertical placement state. Furthermore, the height limit block 421 is provided on the side wall of the second conveying track 420. Through the height limit block 421, the magnetic material with the convex head part at the top can continue to be conveyed into the second conveying track 420 through the height limit block 421. The next step of magnetization treatment is carried out, and the magnetic material with the convex head part at the top is screened, while the magnetic material with the convex head part at the bottom cannot pass through and falls into the recovery plate 100, and then returns to the vibration plate base 200 through the recovery conveying track for re-screening and marking. Further, when the magnetic material moves to the second conveying track 420, when the magnetic material is still in a horizontally placed state, after passing through the height limit block 421, since the length of the screening slot 422 is greater than the length of the magnetic product when it is placed horizontally, it falls from the screening slot 422 on the side wall of the second conveying track 420 into the recovery plate 100, and then returns to the vibration plate base 200 through the recovery conveying track for re-screening and marking; when the magnetic material is cylindrical in shape, the magnetic material enters the third conveying track 500, is marked with positive and negative poles by the inkjet printer 600, and then the next step of magnetization treatment is carried out.

[0043] In order to better screen or mark the magnetic material in the shape of a cylinder or a cylinder with a convex head. In one embodiment, a guide rod is rotatably provided at the connection between the annular conveying track 300 and the first conveying track 410 and the third conveying track 500, and the length of the guide rod is respectively greater than the width of the first conveying track 410 and the width of the third conveying track 500. Specifically, a guide rod is rotatably provided at the connection between the annular conveying track 300 and the first conveying track 410 and the third conveying track 500. The guide rod is specifically provided on a side of the entrance of the third conveying track 500 close to the first conveying track 410. When it is necessary to screen the magnetic material with the protrusion at the top, the guide rod is rotated to seal the entrance of the third conveying track 500, so that the magnetic material with the protrusion at the top can only enter the first conveying track 410; when it is necessary to mark the cylindrical magnetic material, the guide rod is rotated to seal the entrance of the first conveying track 410, so that the cylindrical magnetic material can only enter the third conveying track 500. The length of the guide rod is respectively greater than the width of the first conveying track 410 and the width of the third conveying track 500. The length of the guide rod can also be selected according to different usage scenarios, which is not specifically limited here.

[0044] In order to better fix the first conveying track 410, the second conveying track 420 and the third track, in one embodiment, a support rod 700 is provided on the recovery disk 100, one end of the support rod 700 is fixedly connected to the vibration disk base 200, and the other end of the support rod 700 is fixedly connected to the outer side of the recovery disk 100. Specifically, by providing a support rod 700 between the vibration disk base 200 and the recovery disk 100, the first conveying track 410, the second conveying track 420, and the third conveying track 500 are fixed on the support rod 700, so that the magnetic material can be screened or marked more stably. Further, the number of the support rods 700 is at least 3, for example, the number of the support rods 700 is 3, and the support rods 700 are evenly distributed on the annular surface; or the number of the support rods 700 is 6, and the support rods 700 are evenly distributed on the annular surface. The number of the support rods 700 can be set according to the required fixing effect, which is not specifically limited here. Correspondingly, in order to improve the screening and marking efficiency of the magnetic material, the number of the first conveying tracks 410 can be set to multiple, the number of the second conveying tracks 420 corresponds to the first conveying tracks 410, and the number of the third conveying tracks 500 can also be set to multiple, thereby improving the screening and marking efficiency of the magnetic material.

[0045] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0046] The above-mentioned embodiments only express several embodiments of the present application, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the invention patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present application, which all belong to the protection scope of the present application. Therefore, the protection scope of the patent of this application shall be based on the attached claims.

Claims

1. A magnetic material positive and negative electrode screening and marking device, wherein the magnetic material is cylindrical or cylindrical with a convex head, characterized in that: include: Recovery tray, vibrating discharge tray, screening mechanism and marking mechanism; The recovery tray is provided with a recovery conveying track; The vibrating discharging tray comprises: a vibrating tray base and a spirally extending annular conveying track, wherein the vibrating tray base is arranged in the recovery tray, the recovery conveying track is connected to the vibrating tray base, and the annular conveying track is arranged on the inner side of the vibrating tray base; The screening mechanism comprises: a first conveying track, a second conveying track and a direction adjustment rod, one end of the first conveying track is connected to the annular conveying track, the first conveying track and the second conveying track are annularly arranged on the outer side of the vibration plate base, the other end of the first conveying track is connected to the second conveying track through the direction adjustment rod, and there is a height difference between the first conveying track and the second conveying track; A height limiting block is arranged on the side wall of the second conveying track, the height limiting block is arranged on one side of the second conveying track, the vertical height of the height limiting block on the second conveying track is less than the vertical height of the magnetic material, the vertical height of the height limiting block on the second conveying track is greater than the vertical height of the cylindrical portion of the magnetic material, and the width of the height limiting block is less than the distance from the side wall of the second conveying track to the convex head portion of the magnetic material; The side wall of the second conveying track is also provided with a screening slot, the length of which is greater than the vertical height of the magnetic material; The marking mechanism includes: a third conveying track and an inkjet printer, one end of the third conveying track is connected to the annular conveying track, and the inkjet printer is arranged at the other end of the third conveying track, and the inkjet printer is used to inkjet mark the positive and negative poles of the magnetic products on the third conveying track.

2. A magnetic material positive and negative electrode screening and marking device as claimed in claim 1, characterized in that: The direction adjustment rod is tiltedly arranged between the first conveying track and the second conveying track, one end of the direction adjustment rod is fixed on the first conveying track, and the other end of the direction adjustment rod is arranged on the second conveying track.

3. A magnetic material positive and negative electrode screening and marking device as claimed in claim 1, characterized in that: A support rod is provided on the recovery plate, one end of the support rod is fixedly connected to the vibration plate base, and the other end of the support rod is fixedly connected to the outer side of the recovery plate.

4. A magnetic material positive and negative electrode screening and marking device as claimed in claim 3, characterized in that: The number of the support rods is at least 3.

5. A magnetic material positive and negative electrode screening and marking device as claimed in claim 3, characterized in that: The first conveying track, the second conveying track, and the third conveying track are fixed on the supporting rod.

6. A magnetic material positive and negative electrode screening and marking device as claimed in claim 1, characterized in that: A guide rod is rotatably provided at a connection between the annular conveying track and the first conveying track and the third conveying track, and the length of the guide rod is respectively greater than the width of the first conveying track and the width of the third conveying track.

7. A magnetic material positive and negative electrode screening and marking device as claimed in claim 2, characterized in that: The second conveying track is provided with an extension section extending beyond the first conveying track.

8. A magnetic material positive and negative electrode screening and marking device as claimed in claim 1, characterized in that: The recovery conveying track includes: a first recovery conveying track and a second recovery conveying track, the first recovery conveying track is arranged on the inner side of the recovery disk, the second recovery track is arranged on the outer side of the vibration disk base, and the first recovery conveying track is connected to the second recovery conveying track.

9. A magnetic material positive and negative electrode screening and marking device as claimed in claim 8, characterized in that: The vibration plate base is provided with a recovery hole, and the second recovery conveying track is connected with the recovery hole.

10. A magnetic material positive and negative electrode screening and marking device as claimed in claim 1, characterized in that: A fixing seat is arranged at the other end of the third conveying track, and the fixing seat is used for fixing the inkjet printer and adjusting the height of the inkjet printer.

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