CN111969812B

CN111969812B - Mold and method for splicing annular magnetic shoes

Info

Publication number: CN111969812B
Application number: CN202010858853.4A
Authority: CN
Inventors: 邓伟峰; 黄耀松; 叶庆
Original assignee: Suzhou University
Current assignee: Suzhou University
Priority date: 2020-08-24
Filing date: 2020-08-24
Publication date: 2021-06-01
Anticipated expiration: 2040-08-24
Also published as: CN111969812A

Abstract

The invention discloses a die for splicing annular magnetic tiles and a splicing method, wherein the die comprises an outer hoop, wherein a through hole is formed in the side surface of the outer hoop in a penetrating manner; the inner core column is coaxially arranged with the outer hoop, the inner core column comprises a first cylinder body and a second cylinder body which are coaxially arranged, the first cylinder body is positioned on the upper side of the second cylinder body, the outer diameter of the second cylinder body is smaller than that of the first cylinder body, the lower end part of the second cylinder body is positioned in the outer hoop, the second cylinder body and the outer hoop are matched to form an annular accommodating cavity for accommodating a plurality of magnetic tiles, and the guide groove is positioned on the side surface of the first cylinder body for guiding the magnetic tiles into the annular accommodating cavity; the spanner is the same as strutting adjacent magnetic shoe, the tip warp of spanner the through-hole is worn to establish and is got into annular and hold the chamber, the width of spanner is greater than the width of magnetic shoe. The annular splicing of the magnetic shoes can be completed, the structure is compact, the cost is low, and the assembly precision is high.

Description

Mold and method for splicing annular magnetic shoes

Technical Field

The invention relates to the technical field of radial permanent magnet installation, in particular to a mold and a method for splicing annular magnetic shoes.

Background

In the manufacturing and assembling processes of a linear oscillating compressor, the problem of installation of a radial magnetizing permanent magnet is often encountered, two common installation modes are available at present, one mode is that an integral annular permanent magnet is directly installed after being magnetized by adopting central radiation, the method is simple to assemble, but the radiation magnetizing technology is high, the magnetizing mould is high in cost, and the magnetizing strength is difficult to enable the permanent magnet to reach the self magnetic saturation strength; the other method is that after being magnetized in a radial parallel way, the arc magnetic shoes are spliced and installed by using corresponding dies, finally a circular ring structure is formed, and the radial magnetic field is approximately regarded as annular radiation. However, after the magnetic shoes are magnetized, attractive force or repulsive force is generated among the magnetic shoes, great difficulty is brought to splicing and assembling, magnetic steel is easy to scrap in actual operation, the structure of a corresponding control mold is complex, the manufacturing cost is high, and no effective measure is provided for solving the problems in small-batch production and manufacturing under the laboratory research and development and enterprise pre-research occasions.

Disclosure of Invention

The invention aims to provide a die and a method for splicing annular magnetic tiles, which can finish annular splicing of the magnetic tiles and have the advantages of compact structure, low cost and high assembly precision.

In order to solve the technical problem, the invention provides a mold for splicing annular magnetic shoes, which comprises:

the side surface of the outer hoop is provided with a through hole in a penetrating way;

the inner core column is coaxially arranged with the outer hoop, the inner core column comprises a first cylinder body and a second cylinder body which are coaxially arranged, the first cylinder body is positioned on the upper side of the second cylinder body, the outer diameter of the second cylinder body is smaller than that of the first cylinder body, the lower end part of the second cylinder body is positioned in the outer hoop, the second cylinder body and the outer hoop are matched to form an annular accommodating cavity for accommodating a plurality of magnetic tiles, and the guide groove is positioned on the side surface of the first cylinder body for guiding the magnetic tiles into the annular accommodating cavity;

the spanner is the same as strutting adjacent magnetic shoe, the tip warp of spanner the through-hole is worn to establish and is got into annular and hold the chamber, the width of spanner is greater than the width of magnetic shoe.

Preferably, the guide groove is a profiling structure of the magnetic shoe.

Preferably, the height of the second cylinder is higher than that of the magnetic shoe.

Preferably, the height difference between the second column and the magnetic shoe is between 0.1mm and 0.2 mm.

Preferably, the axial height of the outer hoop is lower than the height of the magnetic shoe.

Preferably, the magnetic tile splicing device further comprises a tray, and the tray is used for bearing the spliced annular magnetic tiles.

Preferably, the wrench is of a flat plate structure.

Preferably, the wrench is of a T-shaped configuration.

Preferably, the inner core column surface has a frosted surface.

The invention discloses a method for splicing annular magnetic tiles, which is used for splicing the annular magnetic tiles based on the die spliced by the annular magnetic tiles and comprises the following steps:

s1, plugging the magnetic shoe into the annular accommodating cavity along the guide groove;

s2, rotating the inner core column to drive the magnetic shoe to rotate synchronously until the guide groove and the through hole are staggered, inserting the wrench into the annular accommodating cavity in a vertical state, and rotating to a horizontal state;

s3, rotating the inner core column until the guide groove is positioned right above the wrench, plugging the magnetic shoe into the annular accommodating cavity through the guide groove, and drawing out the wrench to enable the magnetic shoe to fall into the annular accommodating cavity;

and S4, repeating S2 and S3 until the annular accommodating cavity is filled with the plurality of magnetic tiles.

The invention has the beneficial effects that:

the invention provides a die for splicing annular magnetic tiles, which can finish annular splicing of the magnetic tiles and has the advantages of compact structure, low cost and high assembly precision.

The invention can ensure that the magnetic shoe is not influenced by magnetic attraction or magnetic repulsion in the installation process, improve the assembly power, save the manufacturing cost and have better convenience.

Drawings

FIG. 1 is a first structural schematic view of the present invention, wherein the magnetic shoe does not enter the annular receiving groove;

FIG. 2 is a second structural schematic view of the present invention, wherein the wrench is in a horizontal state to support the magnetic shoe;

FIG. 3 is a cross-sectional view of the present invention;

fig. 4 is a structural schematic diagram of the inner core column;

FIG. 5 is a schematic structural view of the outer hoop;

fig. 6 is a schematic structural view of the tray.

The reference numbers in the figures illustrate: 10. an outer hoop; 11. a through hole; 20. an inner core column; 21. a first column; 211. a guide groove; 22. a second cylinder; 30. a wrench; 40. a magnetic shoe; 50. a tray; 51. and (4) a leak hole.

Detailed Description

The present invention is further described below in conjunction with the following figures and specific examples so that those skilled in the art may better understand the present invention and practice it, but the examples are not intended to limit the present invention.

Referring to fig. 1-5, the invention discloses a mold for splicing annular magnetic tiles, which comprises an outer hoop 10, an inner core column 20 and a wrench 30.

A through hole 11 is formed through the side surface of the outer hoop 10. The outer hoop 10 is of an annular structure, the outer diameter of the outer hoop is 75mm, the inner diameter of the outer hoop is 60mm, the axial height of the outer hoop is 40mm, and a lateral through hole 11 with the diameter of 15mm is formed in the outer circular surface of the outer hoop.

Inner stem 20 and outer hoop 10 are with the central axis setting, inner stem 20 is including the first cylinder 21 and the second cylinder 22 of coaxial setting, first cylinder 21 is located the upside of second cylinder 22, the external diameter of second cylinder 22 is less than first cylinder 21, the lower tip of second cylinder 22 is located outer hoop 10, second cylinder 22 and outer hoop 10 cooperate and form the annular and hold the chamber in order to hold a plurality of magnetic shoes 40, guide way 211 is located the side of first cylinder 21 and holds the chamber in order to hold the leading-in annular of magnetic shoes 40. In one embodiment, the first cylinder 21 has a diameter of 62mm and an axial length of 45mm, and the second cylinder 22 has a diameter of 50mm and an axial length of 40.1 mm. The inner diameter of an annular assembly body formed by splicing the second cylinder 22 and the magnetic shoe 40 is equal, or the tolerance is between 0.02mm and 0.05 mm. In this embodiment, the magnetic shoe 40 is 1/12 drum portion, and the material is sintering neodymium iron boron, and the arc angle is 30, and external diameter 60mm, internal diameter 50mm, and the axial height is 40mm, slightly is less than the axial height of second cylinder 22.

The wrench 30 is used for opening the adjacent magnetic tiles 40, the end of the wrench 30 penetrates into the annular accommodating cavity through the through hole 11, and the width of the wrench 30 is larger than that of the magnetic tiles 40. Spanner 30 is the stainless steel flat board, and thickness is 2mm, and length is 50mm, and the one end of keeping away from through-hole 11 has outstanding "ear" part, is favorable to the manual operation of rotating, and middle width is 15mm, and right-hand member convergent section width is 14.8mm to conveniently insert outer hoop 101 side direction through-hole 11 and carry out the free rotation. The diameter of the through hole 11 of the outer hoop 10 is larger than the width of the wrench 30, and the single-side gap amount is between 0.1mm and 0.2 mm.

The invention further comprises a tray 50, and the tray 50 is used for bearing the spliced annular magnetic tiles. The tray 50 is of an annular cylindrical structure and made of non-magnetic-conductive material stainless steel, the inner wall surface of the tray 50 is in clearance fit with the side wall of the spliced magnetic shoe 40, and the tolerance range is 0.02 mm-0.05 mm.

The guide groove 211 is a contour structure of the magnetic shoe 40. The guide groove 211 has a groove cross-section having the same shape as the cross-section of the magnet shoe 40 and enables the magnet shoe 40 to be smoothly inserted into the ring-shaped receiving groove along the guide groove 211 without lateral movement.

The height of the second cylinder 22 is higher than that of the magnetic shoe 40. The height difference between the second cylinder 22 and the magnetic shoe 40 is between 0.1mm and 0.2 mm. The outer hoop 10 has an axial height lower than the height of the magnetic shoe 40. The height difference between the outer hoop 10 and the magnetic shoe 40 is 1/10-1/8 of the axial height of the magnetic shoe 40.

The wrench 30 is a T-shaped structure for easy rotation.

The inner core column 20 has a frosted surface on the surface, so that a large friction force is provided between the inner core column 20 and the magnetic shoe 40, and the inner core column 20 is convenient to drive the magnetic shoe 40 to rotate.

firstly, the magnetic shoe 40 is plugged into the annular accommodating cavity along the guide groove 211.

Step two, rotating the inner core column 20 to drive the magnetic shoe 40 to synchronously rotate until the guide groove 211 is dislocated with the through hole 11, inserting the wrench 30 into the annular accommodating cavity in a vertical state, and rotating to a horizontal state; at this time, a partial region of the annular receiving chamber is filled with the wrench 30. In the second step, when a plurality of magnetic rings are loaded in the annular accommodating cavity, two adjacent magnetic shoes 40 may approach each other due to the action of magnetic force, and the gap between the two adjacent magnetic shoes 40 is too small, so that the subsequent magnetic shoes 40 cannot be inserted, and the wrench 30 solves the problem, by vertically inserting the wrench 30, the wrench 30 falls into the space between the two adjacent magnetic shoes 40, and then the wrench 30 is rotated by 90 degrees, that is, the two adjacent magnetic shoes 40 are opened, and then, even if a new magnetic shoe 40 is added, as shown in fig. 2.

And step three, rotating the inner core column 20 until the guide groove 211 is positioned right above the wrench 30, plugging the magnetic shoe 40 into the annular accommodating cavity through the guide groove 211, at the moment, dropping the magnetic shoe 40 onto the wrench 30, then slowly pulling out the wrench 30, and dropping the newly loaded magnetic shoe 40 into the annular accommodating cavity. In the rotating process of the inner core post 20 in the third step, the lower surface of the first column body 21 can be pressed against the magnetic shoes 40 in the annular accommodating groove to compress the magnetic shoes 40, so that the consistency of assembling the plurality of magnetic shoes 40 in the annular accommodating groove is ensured.

And step four, repeating the step three and the step four until the plurality of magnetic shoes 40 fill the annular accommodating cavity. Here, the criteria for filling the annular housing cavity with the magnetic shoes 40 are: until the circumferential gap of the magnetic shoe 40 uniformly distributed in the outer hoop 10 due to the magnetic field repulsive force cannot be inserted by the next magnetic shoe 40.

And step five, rotating the inner core column 20 for a circle, and pressing all the magnetic tiles 40 tightly, so that the alignment of the plurality of magnetic tiles 40 can be realized.

And then, the surfaces of the magnetic tiles 40 can be directly and uniformly coated with adhesive glue, the inner core column 20 is slightly pulled out upwards, and the magnetic tiles 40 are fixed after the adhesive glue is naturally dried. Or, the outer hoop 10 carrying the plurality of magnetic tiles 40 is moved to the upper end of the tray 50, so that the inner core column 20 and the central axis of the tray 50 are on the same straight line, then the inner core column 20 is pressed into the tray 50 by applying force from top to bottom, the magnetic tiles 40 which are spliced in the annular shape are completely pressed into the tray 50, after the magnetic tiles are fixed by the surface adhesive glue, the inner core column 20 is slightly rotated to be carefully pulled out, and then the tray 50 is placed in a ventilation position and is placed for 24 hours until the adhesive glue is naturally dried to achieve the fixing effect. The bottom of the tray 50 is provided with a leak hole 51 which can discharge the internal air in the process of pressing all the magnetic tiles into the tray so as to ensure that the whole annular spliced magnetic tiles are pressed smoothly.

The above-mentioned embodiments are merely preferred embodiments for fully illustrating the present invention, and the scope of the present invention is not limited thereto. The equivalent substitution or change made by the technical personnel in the technical field on the basis of the invention is all within the protection scope of the invention. The protection scope of the invention is subject to the claims.

Claims

1. The utility model provides a mould of annular magnetic shoe concatenation which characterized in that includes:

the inner core column and the outer hoop are arranged coaxially, the inner core column comprises a first cylinder and a second cylinder which are coaxially arranged, the first cylinder is positioned on the upper side of the second cylinder, the outer diameter of the second cylinder is smaller than that of the first cylinder, the lower end part of the second cylinder is positioned in the outer hoop, the second cylinder and the outer hoop are matched to form an annular accommodating cavity for accommodating a plurality of magnetic tiles, and a guide groove is formed in the side surface of the first cylinder for guiding the magnetic tiles into the annular accommodating cavity;

2. The mold for splicing ring-shaped magnetic shoes as claimed in claim 1, wherein the guide groove is a profiling structure of the magnetic shoes.

3. The mold for splicing ring-shaped magnetic tiles as claimed in claim 1, wherein the height of the second column is higher than that of the magnetic tiles.

4. The mold for splicing the ring-shaped magnetic shoes as claimed in claim 3, wherein the height difference between the second column and the magnetic shoes is between 0.1mm and 0.2 mm.

5. The mold for splicing the ring-shaped magnetic shoes as claimed in claim 1, wherein the axial height of the outer hoop is lower than the height of the magnetic shoes.

6. The mold for annular magnetic tile splicing according to claim 1, further comprising a tray for carrying the spliced annular magnetic tiles.

7. The mold for splicing ring-shaped magnetic tiles as claimed in claim 1, wherein the wrench is of a flat plate structure.

8. The mold for splicing the ring-shaped magnetic tiles as claimed in claim 1, wherein the wrench has a T-shaped structure.

9. The die for annular magnetic tile splicing of claim 1, wherein the surface of the inner core column has a frosted surface.

10. An annular magnetic shoe splicing method based on the mold for splicing annular magnetic shoes according to any one of claims 1 to 9, comprising the following steps: