General positioning jig for sintered neodymium-iron-boron permanent magnet grain boundary diffusion screen printing

Abstract

The utility model relates to the technical field of neodymium-iron-boron magnet manufacturing, and particularly discloses a sintered neodymium-iron-boron permanent magnet grain boundary diffusion silk-screen printing universal positioning jig which comprises a positioning jig body, and a plurality of magnet positioning assemblies are movably installed on the top of the positioning jig body. A magnet positioning assembly is arranged on the positioning jig body, a positioning hole is formed in the connecting position of the magnet positioning assembly and the positioning jig body, a movable bottom plate is movably arranged below the positioning jig body, four guide rail sliding blocks are arranged at the bottom of the movable bottom plate, and a separating assembly used for separating the neodymium iron boron permanent magnet from the magnet positioning assembly is arranged on the positioning jig body. The magnet positioning assembly comprises positioning iron sheets arranged on the top of the positioning jig body in parallel, and the bottoms of the positioning iron sheets are provided with hollow installation insertion rods arranged in the positioning holes in a penetrating mode. According to the utility model, the positioning steps of the neodymium-iron-boron permanent magnets can be simplified, and multiple groups of neodymium-iron-boron permanent magnets with different sizes can be simultaneously positioned in batches.

Description

Technical Field

[0001] The utility model relates to the technical field of neodymium iron boron magnet manufacturing, in particular to a general positioning fixture for screen printing of grain boundary diffusion of sintered neodymium iron boron permanent magnets. Background Art

[0002] The screen printing technology for grain boundary diffusion of sintered neodymium iron boron permanent magnets is to configure heavy rare earth elements (such as dysprosium and terbium) into ink. Pour the ink at one end of the screen printing plate, apply a certain pressure to the ink on the screen printing plate with a squeegee, and move it uniformly towards the other end. The ink is extruded from the mesh holes by the squeegee and forms a film on the magnetic sheet during the movement. The screen printing process has the characteristics of high production efficiency, high utilization rate of heavy rare earth, and good weight gain consistency, and is very suitable for grain boundary diffusion of square magnetic steels.

[0003] During the screen printing process of grain boundary diffusion of sintered neodymium iron boron permanent magnets, the magnetic sheet needs to be placed under the screen, and the magnetic sheet is fixed by a positioning fixture to avoid poor printing effect or waste of printing materials caused by the movement of the magnetic sheet during printing.

[0004] In the existing publicly disclosed technical solution, the publication number CN116968420A discloses a continuous screen printing device, which specifically relates to the technical field of screen printing, including an equipment bottom frame, a indexing device, a plurality of fixing mechanisms and a printing mechanism. The fixing mechanism includes a positioning outer frame, and two symmetrically distributed positioning inner frames are slidably clamped in the positioning outer frame. The positioning inner frame has a U-shaped structure. Sliding seats are fixedly installed at the opposite ends of the two positioning inner frames, and the sliding seats are slidably clamped inside the positioning outer frame, facilitating the sliding of the positioning inner frame in the positioning outer frame; Support frames are fixedly installed at the inner bottoms of the two positioning inner frames. By setting the support frames, it is convenient to place the neodymium iron boron permanent magnet material to be printed between the two positioning inner frames and support it through the support frames, thereby positioning the neodymium iron boron permanent magnet material.

[0005] When the above technical solution is actually implemented, the neodymium iron boron permanent magnet material needs to be placed separately in a group of fixing mechanisms. For small-sized neodymium iron boron permanent magnet sheets, the use efficiency of this positioning mechanism is relatively low, and when processing in batches, the adjustment of the positioning mechanism is relatively cumbersome. Summary of the Invention

[0006] The purpose of the utility model is to provide a general positioning fixture for screen printing of grain boundary diffusion of sintered neodymium iron boron permanent magnets, which can simplify the positioning steps of neodymium iron boron permanent magnets and can batch position multiple groups of neodymium iron boron permanent magnets with different sizes simultaneously, so as to solve the problems proposed in the above background art.

[0007] To achieve the above object, the utility model provides the following technical solution: a general positioning jig for screen printing of grain boundary diffusion of sintered neodymium iron boron permanent magnets, which includes a positioning jig main body. A plurality of magnet positioning components are movably installed on the top of the positioning jig main body. Positioning holes are opened at the connection between the magnet positioning components and the positioning jig main body. A moving bottom plate is movably arranged below the positioning jig main body, and four groups of guide rail sliders are arranged at the bottom of the moving bottom plate. A separating component for separating the neodymium iron boron permanent magnet from the magnet positioning component is arranged on the positioning jig main body;

[0008] The magnet positioning component includes positioning iron sheets arranged in parallel on the top of the positioning jig main body. A hollow mounting insertion rod is arranged at the bottom of the positioning iron sheet and penetrates inside the positioning hole.

[0009] Preferably, a push rod is slidably installed inside the mounting insertion rod, and a limiting member fixed to the inner wall of the mounting insertion rod is arranged at the bottom of the push rod.

[0010] Preferably, the separating component includes a lifting plate slidably installed in parallel inside the positioning jig main body. A plurality of power rods are evenly distributed at equal intervals on the top surface of the lifting plate, and the power rods penetrate inside the hollow mounting insertion rod.

[0011] Preferably, the push rod slides up and down inside the mounting insertion rod through the power rod, and the power rods are arranged in one-to-one correspondence with the positioning holes.

[0012] Preferably, guide sliders penetrating through the positioning jig main body are fixedly arranged on the left and right sides of the lifting plate, and guide chutes are opened at the connection between the guide sliders and the positioning jig main body.

[0013] Preferably, a connecting lead screw is installed through a lead screw sleeve in the middle of the guide slider, and a knob is fixedly arranged at the top of the connecting lead screw.

[0014] Preferably, support plates are fixedly arranged on the left and right sides of the positioning jig main body, and the top of the connecting lead screw penetrates through the support plate and is fixedly connected with the knob.

[0015] Preferably, four groups of insertion rods are fixedly arranged at the four corners of the top of the moving bottom plate, and through holes adapted to the insertion rods are opened at the bottom of the positioning jig main body.

[0016] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0017] 1. By setting the magnet positioning component, a suitable positioning iron sheet can be selected according to the size of the neodymium iron boron permanent magnet, and different sizes of neodymium iron boron permanent magnets can be positioned through the positioning iron sheet. The magnet positioning component is convenient to install and can be adapted to the large-scale printing of small-size neodymium iron boron permanent magnets;

[0018] 2. By means of the provided separation component, the neodymium iron boron permanent magnet can be pushed upward by the power rod, which facilitates the separation of the neodymium iron boron permanent magnet from the positioning iron sheet. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. Obviously, the drawings in the following description are some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0020] Figure 1 It is the overall structure view of the present invention;

[0021] Figure 2 It is the semi-sectional structure schematic diagram of the positioning iron sheet of the present invention;

[0022] Figure 3 It is the structure schematic diagram of the lifting plate of the present invention;

[0023] Figure 4 It is the structure schematic diagram of the moving bottom plate of the present invention;

[0024] Figure 5 It is of the present invention Figure 1 The enlarged view at A in

[0025] Explanation of the reference numerals in the drawings:

[0026] 1. Main body of the positioning jig; 2. Magnet positioning component; 201. Positioning iron sheet; 202. Installation insertion rod; 203. Push rod; 204. Limiting member; 3. Positioning hole; 4. Separation component; 401. Lifting plate; 402. Power rod; 403. Guide slider; 404. Connecting screw rod; 405. Guide chute; 406. Support plate; 407. Knob; 5. Guide rail slider; 6. Moving bottom plate; 7. Insertion rod. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, rather than all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0028] The present invention provides a technical solution:

[0029] Please refer to Figures 1 to 4, A general positioning fixture for screen printing of grain boundary diffusion of sintered NdFeB permanent magnets, including a positioning fixture main body 1. A number of magnet positioning components 2 are movably installed on the top of the positioning fixture main body 1. A positioning hole 3 is opened at the connection between the magnet positioning component 2 and the positioning fixture main body 1. A moving bottom plate 6 is movably arranged below the positioning fixture main body 1, and four groups of guide rail sliders 5 are arranged at the bottom of the moving bottom plate 6. Four groups of insertion rods 7 are fixedly arranged at the four corners of the top of the moving bottom plate 6, and through holes adapted to the insertion rods 7 are opened at the bottom of the positioning fixture main body 1. A separation component 4 for separating the NdFeB permanent magnet from the magnet positioning component 2 is arranged on the positioning fixture main body 1;

[0030] The magnet positioning component 2 includes a positioning iron sheet 201 arranged in parallel on the top of the positioning fixture main body 1. A hollow installation insertion rod 202 penetrating inside the positioning hole 3 is arranged at the bottom of the positioning iron sheet 201. A push rod 203 is slidably installed inside the installation insertion rod 202, and a limiting part 204 fixed to the inner wall of the installation insertion rod 202 is arranged at the bottom of the push rod 203.

[0031] By adopting the above technical solution, the positioning iron sheet 201 in the magnet positioning component 2 is made according to the size structure of the NdFeB permanent magnet. The positioning iron sheet 201 is inserted into the inside of the positioning hole 3 through the bottom installation insertion rod 202 as required, and the guide rail sliders 5 on the bottom moving bottom plate 6 slide on the guide rail of the production line, so as to cooperate with the printing machine to realize the printing operation of the NdFeB permanent magnet.

[0032] Specifically, as Figure 3 and Figure 5 shown, the separation component 4 includes a lifting plate 401 slidably installed in parallel inside the positioning fixture main body 1. A number of power rods 402 evenly distributed at equal intervals are arranged on the top surface of the lifting plate 401. The power rods 402 penetrate inside the hollow installation insertion rod 202. The push rod 203 slides up and down inside the installation insertion rod 202 through the power rods 402, and the power rods 402 are arranged in one-to-one correspondence with the positioning holes 3. Guide sliders 403 penetrating the positioning fixture main body 1 are fixedly arranged on the left and right sides of the lifting plate 401, and a guide chute 405 is opened at the connection between the guide sliders 403 and the positioning fixture main body 1. A connecting lead screw 404 is installed in the middle of the guide slider 403 through a lead screw sleeve, and a knob 407 is fixedly arranged at the top of the connecting lead screw 404. Support plates 406 are fixedly arranged on the left and right sides of the positioning fixture main body 1, and the top of the connecting lead screw 404 penetrates through the support plate 406 and is fixedly connected with the knob 407.

[0033] By adopting the above technical solution, both ends of the positioning iron sheet 201 are installed on the top of the positioning fixture main body 1 through screws. When it is necessary to separate the positioning iron sheet 201 and the neodymium iron boron permanent magnet, rotate the knob 407. The knob 407 drives the connecting lead screw 404 to rotate, causing the guiding slider 403 to move upward in the guiding chute 405. Thus, the power rod 402 is driven upward by the lifting plate 401 into the interior of the mounting plug rod 202, and the pushing rod 203 is driven upward. Thereby, the neodymium iron boron permanent magnet adsorbed on the positioning iron sheet 201 and the positioning iron sheet 201 move upward to separate the neodymium iron boron permanent magnet.

[0034] Working principle: The entire positioning fixture main body 1 is installed on the moving bottom plate 6 through the plugging rod 7. The moving bottom plate 6 is installed on the guide rail of the printing production line through the guide rail slider 5. A positioning iron sheet 201 of a suitable size is made according to the size of the neodymium iron boron permanent magnet. The positioning iron sheet 201 is inserted into the interior of the positioning hole 3 through the mounting plug rod 202 and sleeved outside the power rod 402. At this time, the power rod 402 and the pushing rod 203 are on the same straight line. Threaded holes adapted to each other can also be provided on both sides of each positioning hole 3 to facilitate fixing the positioning iron sheet 201 on the threaded holes through screws. At this time, the lifting plate 401 is at the bottommost layer. The neodymium iron boron permanent magnets are sequentially placed on the positioning iron sheet 201 for fixation and conveyed into the printing bin. After coating the surface of the neodymium iron boron permanent magnet, the positioning fixture main body 1 can be directly removed, and then the neodymium iron boron permanent magnet is cured on one side. Subsequently, the cured neodymium iron boron permanent magnet is separated from the positioning iron sheet 201. The knob 407 drives the connecting lead screw 404 to rotate, causing the guiding slider 403 to move upward in the guiding chute 405. Thus, the power rod 402 is driven upward by the lifting plate 401 into the interior of the mounting plug rod 202, and the pushing rod 203 is driven upward. Thereby, the neodymium iron boron permanent magnet adsorbed on the positioning iron sheet 201 and the positioning iron sheet 201 move upward to realize the separation of the neodymium iron boron permanent magnet and the positioning iron sheet 201.

[0035] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A general positioning fixture for screen printing of grain boundary diffusion of sintered NdFeB permanent magnets, comprising a positioning fixture main body (1), characterized in that: A number of magnet positioning components (2) are movably installed on the top of the positioning jig body (1). A positioning hole (3) is provided at the connection between the magnet positioning component (2) and the positioning jig body (1). A moving bottom plate (6) is movably arranged below the positioning jig body (1), and four groups of guide railsliders (5) are arranged at the bottom of the moving bottom plate (6). A separating component (4) for separating the neodymium iron boron permanent magnet from the magnet positioning component (2) is arranged on the positioning jig body (1). The magnet positioning component (2) includes a positioning iron sheet (201) arranged in parallel on the top of the positioning jig body (1). A hollow mounting insertion rod (202) penetrating inside the positioning hole (3) is arranged at the bottom of the positioning iron sheet (201).

2. A general positioning fixture for grain boundary diffusion screen printing of a sintered NdFeB permanent magnet according to claim 1, characterized in that: A push rod (203) is slidably installed inside the mounting insertion rod (202), and a limiting member (204) fixed to the inner wall of the mounting insertion rod (202) is arranged at the bottom of the push rod (203).

3. A general positioning jig for grain boundary diffusion screen printing of a sintered NdFeB permanent magnet according to claim 2, characterized in that: The separating component (4) includes a lifting plate (401) slidably installed in parallel inside the positioning jig body (1). A number of power rods (402) evenly distributed at equal intervals are arranged on the top surface of the lifting plate (401). The power rods (402) penetrate inside the hollow mounting insertion rod (202).

4. A general positioning fixture for grain boundary diffusion screen printing of a sintered NdFeB permanent magnet according to claim 3, characterized in that: The push rod (203) slides up and down inside the mounting insertion rod (202) through the power rod (402), and the power rods (402) are arranged in one-to-one correspondence with the positioning holes (3).

5. A general positioning jig for grain boundary diffusion screen printing of a sintered neodymium iron boron permanent magnet according to claim 4, characterized in that: Guide sliders (403) penetrating through the positioning jig body (1) are fixedly arranged on the left and right sides of the lifting plate (401), and a guide chute (405) is provided at the connection between the guide slider (403) and the positioning jig body (1).

6. The general positioning fixture for grain boundary diffusion screen printing of a sintered NdFeB permanent magnet according to claim 5, characterized in that: A connecting lead screw (404) is installed in the middle of the guide slider (403) through a lead screw sleeve, and a knob (407) is fixedly arranged at the top of the connecting lead screw (404).

7. A general positioning fixture for grain boundary diffusion screen printing of a sintered NdFeB permanent magnet according to claim 6, characterized in that: Support plates (406) are fixedly arranged on the left and right sides of the positioning jig body (1), and the top of the connecting lead screw (404) penetrates through the support plate (406) and is fixedly connected with the knob (407).

8. A general positioning fixture for grain boundary diffusion screen printing of a sintered NdFeB permanent magnet according to claim 1, characterized in that: Four groups of insertion rods (7) are fixedly arranged at the four corners of the top of the moving bottom plate (6), and through holes adapted to the insertion rods (7) are provided at the bottom of the positioning jig body (1).

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