Positioning and pressure maintaining device for Halbach magnetic assembly

Abstract

The utility model discloses a positioning and pressure maintaining device for a Halbach magnetic assembly. The positioning and pressure maintaining device comprises a machine body, a jig for placing the Halbach magnetic assembly, a positioning assembly and a pressure maintaining assembly, the machine body is provided with a bottom plate, a middle plate and a top plate, and the middle plate is fixedly arranged between the bottom plate and the top plate; the jig is placed on the middle plate, the positioning assemblies are arranged on the portions, on the two sides of the jig, of the middle plate, and the positioning assemblies move relative to the jig so as to position the jig. The pressure maintaining assemblies are arranged on the upper surface of the bottom plate and the lower surface of the top plate respectively, the jig and the middle plate are provided with long-strip-shaped through holes, the pressure maintaining assemblies on the upper surface of the bottom plate stretch into the long-strip-shaped through holes in an upward jacking mode and are matched with the pressure maintaining assemblies on the lower surface of the top plate to conduct downward pressing movement, and therefore pressure maintaining is conducted on the Halbach magnetic assembly on the jig. The positioning assembly is used for positioning the two sides of the jig for placing the Halbach magnetic assembly, and the pressure maintaining assembly is used for maintaining pressure on the upper surface and the lower surface of the Halbach magnetic assembly on the jig, so that a magnet and an iron piece of the Halbach magnetic assembly can be perfectly attached, the qualified rate and the production efficiency of products are improved, and the production cost is reduced. And the automation degree is high, and the manual operation amount is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of Halbach magnetic component assembly, in particular to a positioning and pressure-maintaining device for Halbach magnetic components. Background Art

[0002] Halbach Array is a new type of permanent magnet arrangement. Permanent magnets with different magnetization directions are arranged in a certain order, so that the magnetic field on one side of the array is significantly enhanced, while the magnetic field on the other side is significantly weakened. Halbach Array was first proposed by Professor Klaus Halbach of Lawrence Berkeley National Laboratory in the United States in 1979. It is mainly used in high-energy physics fields such as particle accelerators and free electron laser devices. Due to its excellent magnetic field distribution characteristics, its application range has gradually expanded to industrial fields such as nuclear magnetic resonance, magnetic levitation, and permanent magnet special motors. Halbach magnetic ring combines radial and parallel arrangements of magnets. If the end effect is ignored and the magnetic permeability of the surrounding magnetic conductive material is regarded as infinite, then the above permanent magnet structure will eventually form a one-sided magnetic field. This is a significant feature of Halbach. Halbach magnets have good application value in linear motors.

[0003] Halbach magnetic components are made of magnets and iron parts bonded together. In the actual production process, in order to obtain better magnetic field effects and meet actual needs, the magnets are usually designed to be stepped. Since the magnet surfaces of the components are not in the same plane, the reference surface cannot be determined during the assembly of the Halbach magnetic components. Even if the jig is made into a step-shaped reference surface corresponding to the magnet, since the jig's reference surface size is fixed and the thickness of each magnet has a tolerance range, this will cause the Halbach magnetic components assembled from magnets of different thicknesses to have caulking, that is, there is a gap between the magnet and the iron parts, and it is easy to have debonding and dimensional deviations.

[0004] The existing assembly method requires manual arrangement of magnets on a jig. Due to the small size of the magnets, the suction force between the magnets and the iron parts alone cannot ensure a perfect fit during manual positioning, resulting in low assembly efficiency and pass rate. Utility Model Content

[0005] The utility model aims to provide a positioning and pressure-maintaining device for a Halbach magnetic assembly, so as to ensure that the magnet and the iron part are completely fitted without gap, thereby improving the product qualification rate and production efficiency.

[0006] To achieve the above-mentioned purpose, the solution of the utility model is: a positioning and pressure-maintaining device for Halbach magnetic components, including a body, a jig for placing the Halbach magnetic components, a positioning component and a pressure-maintaining component; the body is provided with a bottom plate, an intermediate plate and a top plate, and the intermediate plate is fixedly arranged between the bottom plate and the top plate; the jig is placed on the intermediate plate, and the intermediate plate is provided with the positioning components on both sides of the jig, and the positioning components move relative to the jig to position the jig; the upper surface of the bottom plate and the lower surface of the top plate are respectively provided with the pressure-maintaining components, and the jig and the intermediate plate are provided with long through holes, and the pressure-maintaining component on the upper surface of the bottom plate extends upward into the long through holes and cooperates with the downward movement of the pressure-maintaining component on the lower surface of the top plate to maintain the pressure of the Halbach magnetic components on the jig.

[0007] Preferably, the positioning assembly includes a first cylinder, a second cylinder, a first push rod and a second push rod, the first push rod is arranged at an output end of the first cylinder, and the second push rod is arranged at an output end of the second cylinder.

[0008] In a preferred embodiment, the middle plate is provided with a positioning groove which is open at one end and closed at the other end, the jig is inserted into the positioning groove from the open end and abuts against the closed end, the first cylinder and the second cylinder are arranged opposite to each other on both sides of the jig, the first cylinder and the second cylinder respectively control the relative movement of the first push rod and the second push rod and abut against both sides of the jig.

[0009] Preferably, the pressure maintaining assembly includes a third cylinder, a fourth cylinder, a third push rod and a fourth push rod, the third cylinder is arranged on the lower surface of the top plate, the third push rod is arranged on the output end of the third cylinder, the fourth cylinder is arranged on the upper surface of the bottom plate, and the fourth push rod is arranged on the output end of the fourth cylinder.

[0010] In a preferred embodiment, a groove for placing the Halbach magnetic component is formed on the fixture, and the elongated through holes are formed at the bottom of the groove and the middle plate at positions corresponding to the Halbach magnetic component, respectively. The third cylinder controls the third push rod to be pressed down and abut against the upper surface of the Halbach magnetic component, and the fourth cylinder controls the fourth push rod to be pushed up, extend into the elongated through hole and abut against the lower surface of the Halbach magnetic component.

[0011] Preferably, the shape of the groove matches the shape of the Halbach magnetic assembly, the shape of the elongated through hole matches the shape of the fourth push rod, the shape of the end of the third push rod matches the shape of the upper surface of the Halbach magnetic assembly, and the shape of the end of the fourth push rod matches the shape of the lower surface of the Halbach magnetic assembly.

[0012] Preferably, the bottom plate, the middle plate and the top plate are in the shape of rectangles, support columns are respectively provided between the bottom plate and the middle plate and between the top plate and the middle plate, and the support columns are arranged at the four corners of the rectangle.

[0013] The preferred solution further comprises an electric control component, which is arranged on the bottom plate and is used to control the movement state of the positioning component and the pressure-maintaining component.

[0014] After adopting the above scheme, the beneficial effect of the utility model is that the positioning component of the utility model positions the two sides of the fixture used to place the Halbach magnetic component, and the pressure-maintaining component maintains pressure on the upper and lower surfaces of the Halbach magnetic component on the fixture, so that the magnet of the Halbach magnetic component and the iron parts can fit perfectly, thereby improving the product qualification rate and production efficiency, and having a high degree of automation, reducing the amount of manual operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 It is a schematic diagram of the explosion structure of the utility model;

[0017] Figure 3 yes Figure 2 A schematic diagram of the enlarged structure at A in the middle;

[0018] Figure 4 It is a top view of the fixture of the present utility model.

[0019] Description of labels:

[0020] 1. Bottom plate; 2. Middle plate; 3. Top plate; 4. Support column; 5. Fixture; 6. First cylinder; 7. Second cylinder; 8. Third cylinder; 9. Fourth cylinder; 10. First push rod; 11. Second push rod; 12. Third push rod; 13. Fourth push rod; 14. Electronic control component; 15. Open end; 16. Closed end; 17. Step surface; 18. Magnet; 19. Long through hole; 20. Groove. DETAILED DESCRIPTION

[0021] The utility model is now further described in conjunction with the accompanying drawings and specific implementation methods.

[0022] The utility model provides a positioning and pressure-maintaining device for a Halbach magnetic component, such as Figures 1 to 4As shown, it includes a body, a jig 5 for placing the Halbach magnetic component, a positioning component and a pressure-maintaining component; the body is provided with a bottom plate 1, an intermediate plate 2 and a top plate 3, and the intermediate plate 2 is fixedly arranged between the bottom plate 1 and the top plate 3; the jig 5 is placed on the intermediate plate 2, and the intermediate plate 2 is provided with the positioning components on both sides of the jig 5, and the positioning components move relative to the jig 5 to position the jig 5; the upper surface of the bottom plate 1 and the lower surface of the top plate 3 are respectively provided with the pressure-maintaining components, and the jig 5 and the intermediate plate 2 are provided with long through holes 19, and the pressure-maintaining component on the upper surface of the bottom plate 1 extends upward into the long through holes 19, and cooperates with the downward movement of the pressure-maintaining component on the lower surface of the top plate 3, so as to maintain the pressure of the Halbach magnetic component on the jig 5.

[0023] like Figure 1 and Figure 2 As shown, the positioning assembly includes a first cylinder 6, a second cylinder 7, a first push rod 10 and a second push rod 11. The first push rod 10 is arranged at the output end of the first cylinder 6, and the second push rod 11 is arranged at the output end of the second cylinder 7. The pressure-maintaining assembly includes a third cylinder 8, a fourth cylinder 9, a third push rod 12 and a fourth push rod 13. The third cylinder 8 is arranged on the lower surface of the top plate 3, the third push rod 12 is arranged at the output end of the third cylinder 8, the fourth cylinder 9 is arranged on the upper surface of the bottom plate 1, and the fourth push rod 13 is arranged at the output end of the fourth cylinder 9. In this embodiment, the positioning assembly and the pressure-maintaining assembly use cylinders as power output, which has a compact structure and can effectively save installation space. The cylinder itself has a guiding function. A push rod is arranged at the output end of the cylinder, so that when the cylinder moves, it can drive the push rod to abut against the surface of the fixture 5 and the Halbach magnetic assembly, thereby realizing the positioning and pressure-maintaining of the Halbach magnetic assembly.

[0024] like Figures 1 to 3 As shown, the middle plate 2 is provided with a positioning groove with one end open and the other end closed, the jig 5 is placed from the open end 15 of the positioning groove and abuts against the closed end 16, the first cylinder 6 and the second cylinder 7 are arranged on both sides of the jig 5, and the first cylinder 6 and the second cylinder 7 respectively control the relative movement of the first push rod 10 and the second push rod 11 and abut against the two sides of the jig 5. In this embodiment, the middle plate 2 is provided with a positioning groove, which is open at one end and closed at the other end. This design makes it easier to place the jig 5 on the middle plate 2, and the positioning groove itself has a certain positioning function, and the first cylinder 6 and the second cylinder 7 are arranged on both sides of the jig 5. When moving, they will drive the first push rod 10 and the second push rod 11 to move relative to each other and abut against the two sides of the jig 5, further positioning the jig 5, and at the same time, the Halbach magnetic assembly is also positioned.

[0025] like Figure 4As shown, the jig 5 is provided with a groove 20 for placing the Halbach magnetic assembly, the bottom of the groove 20 and the middle plate 2 respectively provide the long through hole 19 at positions corresponding to the Halbach magnetic assembly, the third cylinder 8 controls the third push rod 12 to press down and abut against the upper surface of the Halbach magnetic assembly, and the fourth cylinder 9 controls the fourth push rod 13 to push up and extend into the long through hole 19 and abut against the lower surface of the Halbach magnetic assembly. In order to better maintain the pressure of the Halbach magnetic assembly, the third cylinder 8 and the fourth cylinder 9 are provided in this embodiment to control the third push rod 12 and the fourth push rod 13 respectively, so that the groove 20 of the jig 5 and the middle plate 2 respectively provide the long through hole 19 at positions corresponding to the Halbach magnetic assembly, so that the fourth push rod 13 can push up and extend into the long through hole 19 and abut against the lower surface of the Halbach magnetic assembly, and cooperate with the third push rod 12 to press down and abut against the upper surface of the Halbach magnetic assembly to maintain the pressure.

[0026] like Figures 1 to 4 As shown, the shape of the groove 20 matches the shape of the Halbach magnetic assembly, the shape of the long through hole 19 matches the shape of the fourth push rod 13, the shape of the end of the third push rod 12 matches the shape of the upper surface of the Halbach magnetic assembly, and the end of the fourth push rod 13 matches the shape of the lower surface of the Halbach magnetic assembly. In this embodiment, the Halbach magnetic assembly is in the shape of a long strip, so the long through hole 19 matches the shape of the fourth push rod 13 so that the fourth push rod 13 can extend into the long through hole 19 and abut against the lower surface of the Halbach magnetic assembly; because the magnets 18 constituting the Halbach magnetic assembly are arranged in a step shape, the bottom of the groove 20 is in the shape of a step surface 17, the end of the third push rod 12 is set to a plane shape, and the end of the fourth push rod 13 is set to a step surface 17 shape.

[0027] like Figure 1 and Figure 2 As shown, the bottom plate 1, the middle plate 2 and the top plate 3 are in the shape of a rectangle, and support columns 4 are respectively provided between the bottom plate 1 and the middle plate 2, and between the top plate 3 and the middle plate 2, and the support columns 4 are arranged at the four corners of the rectangle. In this embodiment, four support columns 4 are respectively provided between the bottom plate 1 and the middle plate 2, and between the top plate 3 and the middle plate 2, wherein the support columns 4 between the top plate 3, the middle plate 2, and the top plate 3 and the middle plate 2 are designed as one-piece molding, so that the connection is more firm, and other designs can also be adopted in other embodiments; and the support columns 4 between the bottom plate 1 and the middle plate 2 are provided with round holes, and bolts are passed through the round holes and matched with the threaded holes provided in the bottom plate 1 and the middle plate 2 to achieve connection and fixation. At the same time, the support columns 4 are arranged at the four corners of the rectangle to make better use of space and are more beautiful.

[0028] like Figure 1 and Figure 2As shown, it also includes an electric control component 14, which is arranged on the bottom plate 1 and is used to control the motion state of the positioning component and the pressure-maintaining component. This embodiment also includes an electric control component 14, which is used to control the motion state of the first cylinder 6, the second cylinder 7, the third cylinder 8 and the fourth cylinder 9 to achieve synchronous motion of the cylinders.

[0029] The use process of the utility model is as follows:

[0030] Before using the utility model, it is first necessary to machine cut and surface treat the magnet 18 as required by the installation drawing, use a CCD automatic measuring and sorting machine (not shown in the figure) to select the magnets 18 that meet the size requirements, magnetize all the magnets 18 according to the polarity requirements, and soak the iron parts in a promoter so that the glue can cure quickly during bonding, then place the magnet 18 in the jig 5 according to the polarity requirements, place the jig 5 on a glue dispenser to dispense glue on the bonding surface of the magnet 18 (not shown in the figure), and after the glue dispensing is completed, place the iron parts on the bonding surface.

[0031] Then, place the jig 5 with the iron pieces in the positioning groove of the middle plate 2 of the utility model, click the start button of the electronic control component 14, and the first cylinder 6 is pushed to the right, and the second cylinder 7 is pushed to the left, so that the first push rod 10 and the second push rod 11 are against the two sides of the jig 5 to achieve positioning. At the same time, the third cylinder 8 is pressed downward, and the fourth cylinder 9 is pushed upward, so that the third push rod 12 is against the upper surface of the Halbach magnetic component, and the fourth push rod 13 is against the lower surface of the Halbach magnetic component, so as to maintain the pressure of the Halbach magnetic component.

[0032] After completing the initial positioning and pressure holding, the push rods of all cylinders are retracted, the jig 5 is removed from the middle plate 2, and then the assembled Halbach magnetic component is removed from the jig 5 using a demoulding tool. Finally, the residual glue is wiped clean and completely cured according to the process requirements.

[0033] The directional terms mentioned in this specification are defined relative to the structures shown in the drawings. They are relative concepts and may change accordingly according to different locations and different usage conditions. Therefore, these or other directional terms should not be interpreted as restrictive terms.

[0034] The above description is only a preferred embodiment of the present utility model and is not a limitation on the design of the present case. Any equivalent changes made based on the key design of the present case shall fall within the protection scope of the present case.

Claims

1. A positioning and pressure-maintaining device for a Halbach magnetic assembly, characterized in that: It includes a machine body, a jig for placing the Halbach magnetic components, a positioning component and a pressure-maintaining component; The machine body is provided with a bottom plate, a middle plate and a top plate, wherein the middle plate is fixedly arranged between the bottom plate and the top plate; the jig is placed on the middle plate, and the middle plate is provided with the positioning components on both sides of the jig, and the positioning components move relative to the jig to position the jig; The pressure-maintaining components are respectively provided on the upper surface of the bottom plate and the lower surface of the top plate. The jig and the middle plate are provided with long through holes. The pressure-maintaining component on the upper surface of the bottom plate extends upward into the long through holes and cooperates with the downward movement of the pressure-maintaining component on the lower surface of the top plate, thereby maintaining the pressure of the Halbach magnetic component on the jig.

2. A positioning and pressure-maintaining device for a Halbach magnetic assembly as claimed in claim 1, characterized in that: The positioning assembly includes a first cylinder, a second cylinder, a first push rod and a second push rod. The first push rod is arranged at the output end of the first cylinder, and the second push rod is arranged at the output end of the second cylinder.

3. A positioning and pressure-maintaining device for a Halbach magnetic assembly as claimed in claim 2, characterized in that: The middle plate is provided with a positioning groove with one end open and the other end closed. The jig is inserted into the positioning groove from the open end and rests on the closed end. The first cylinder and the second cylinder are arranged opposite to each other on both sides of the jig. The first cylinder and the second cylinder respectively control the relative movement of the first push rod and the second push rod and rest on both sides of the jig.

4. A positioning and pressure-maintaining device for a Halbach magnetic assembly as claimed in claim 1, characterized in that: The pressure maintaining assembly includes a third cylinder, a fourth cylinder, a third push rod and a fourth push rod. The third cylinder is arranged on the lower surface of the top plate, the third push rod is arranged on the output end of the third cylinder, the fourth cylinder is arranged on the upper surface of the bottom plate, and the fourth push rod is arranged on the output end of the fourth cylinder.

5. A positioning and pressure-maintaining device for a Halbach magnetic assembly as claimed in claim 4, characterized in that: The jig is provided with a groove for placing the Halbach magnetic component, and the bottom of the groove and the middle plate respectively form the long through holes at positions corresponding to the Halbach magnetic component. The third cylinder controls the third push rod to press down and abut against the upper surface of the Halbach magnetic component, and the fourth cylinder controls the fourth push rod to push up, extend into the long through hole and abut against the lower surface of the Halbach magnetic component.

6. A positioning and pressure-maintaining device for a Halbach magnetic assembly as claimed in claim 5, characterized in that: The shape of the groove matches the shape of the Halbach magnetic assembly, the shape of the long through hole matches the shape of the fourth push rod, the shape of the end of the third push rod matches the shape of the upper surface of the Halbach magnetic assembly, and the shape of the end of the fourth push rod matches the shape of the lower surface of the Halbach magnetic assembly.

7. A positioning and pressure-maintaining device for a Halbach magnetic assembly as claimed in claim 1, characterized in that: The bottom plate, the middle plate and the top plate are in the shape of rectangles. Support columns are respectively arranged between the bottom plate and the middle plate and between the top plate and the middle plate. The support columns are arranged at the four corners of the rectangle.

8. The positioning and pressure-maintaining device for a Halbach magnetic assembly according to claim 1, characterized in that: It also includes an electric control component, which is arranged on the bottom plate and is used to control the movement state of the positioning component and the pressure-maintaining component.

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