CN213082433U - Linear compressor magnetic bucket - Google Patents

Abstract

The utility model provides a linear compressor magnetic drum, it is equipped with inlayer preimpregnation material, is equipped with permanent magnet end positioning sleeve on the outer circumference of inlayer preimpregnation material bottom, and permanent magnet end positioning sleeve upper portion is located the outer circumference of inlayer preimpregnation material and is evenly distributed and be equipped with a plurality of permanent magnets, and a plurality of permanent magnet upper portions are located and are equipped with middle packing reinforcement sleeve on the outer circumference of inlayer preimpregnation material, and middle packing reinforcement sleeve upper portion is equipped with the magnetic drum end; outer prepreg layers are arranged on the outer circumference of the end positioning sleeve of the permanent magnet, the outer circumference of the middle filling reinforcing sleeve and the outer circumference of the lower edge of the end cover of the magnetic bucket. The linear compressor magnetic bucket is low in material cost and processing cost, good in consistency after high-temperature curing and stable in quality. The utility model discloses but the wide application is in linear compressor.

Description

Linear compressor magnetic bucket

Technical Field

The utility model relates to a compressor part and manufacturing method thereof, in particular to a magnetic barrel of a linear compressor.

Background

The publication number of the publication of 5/8/2018 is CN10633518B, the name of the utility model is a patent of a method for manufacturing a magnetic drum of a linear compressor by using prepreg, and methods for fixing permanent magnet pieces and forming an overall structure are all completed by winding the prepreg, and especially at the gap between a permanent magnet and an upper cover, a large amount of prepreg needs to be wound to fill the space.

Meanwhile, because the thickness of the wound prepreg material is relatively thin, the wound prepreg material needs to be wound for a long time by winding equipment to completely fill the part of the space, and the manufacturing cost is increased; simultaneously because the prepreg layer number of this space winding is more, lead to the thickness of the prepreg of winding this space thick, compare with the prepreg thickness of the outer circumference of permanent magnet and the interior circumference winding of permanent magnet, it is great to differ, like this when through high temperature curing, because the prepreg thickness of winding is inhomogeneous, can appear the inhomogeneous problem of stress distribution during the curing, can often appear warping sometimes, the quality of the final magnetic drum of direct influence, uniformity and homogeneity after the magnetic drum solidification are relatively poor.

SUMMERY OF THE UTILITY MODEL

The utility model wastes a large amount of prepreg materials aiming at the prior process operation, increases the material cost of the magnetic bucket, and simultaneously, because the wound prepreg materials are thinner, the wound prepreg materials need to be wound for a long time by winding equipment, the space of the part can be filled completely, and the manufacturing cost is increased; meanwhile, the prepreg wound in the space is thicker due to more layers of the prepreg wound in the space, and the difference between the prepreg wound in the space and the prepreg wound in the outer circumference of the permanent magnet and the inner circumference of the permanent magnet is larger than the difference between the prepreg wound in the space and the prepreg wound in the outer circumference of the permanent magnet and the inner circumference of the permanent magnet, so that the problem of uneven stress distribution can occur during curing due to uneven thickness of the wound prepreg during high-temperature curing, deformation can often occur sometimes, the quality of a final magnetic bucket is directly influenced, and the technical problems of poor consistency and uniformity of the magnetic bucket after curing are solved.

Therefore, the technical scheme of the utility model is that, a linear compressor magnetic drum is provided with an inner prepreg, a permanent magnet end positioning sleeve is arranged on the outer circumference of the bottom of the inner prepreg, a plurality of permanent magnets are uniformly distributed on the outer circumference of the inner prepreg on the upper part of the permanent magnet end positioning sleeve, a middle filling reinforcing sleeve is arranged on the outer circumference of the inner prepreg on the upper part of the permanent magnets, and a magnetic drum end cover is arranged on the upper part of the middle filling reinforcing sleeve; the diameter of the outer circumference of the end positioning sleeve of the permanent magnet is smaller than that of the outer circumference of the permanent magnet, the diameter of the outer circumference of the middle filling reinforcing sleeve is smaller than that of the outer circumference of the permanent magnet, and the diameter of the outer circumference of the end cover of the magnetic bucket is smaller than that of the outer circumference of the permanent magnet; outer prepreg layers are arranged on the outer circumference of the end positioning sleeve of the permanent magnet, the outer circumference of the middle filling reinforcing sleeve and the outer circumference of the lower edge of the end cover of the magnetic bucket.

Preferably, the middle filling reinforcing sleeve is provided with tightening open grooves on the circumference.

Preferably, the tightening open slot of the middle filling reinforcing sleeve is a triangular opening or a straight opening.

Preferably, the triangular openings or the straight openings are distributed straight or obliquely along the axial direction of the middle filling reinforcing sleeve.

Preferably, a plurality of middle filling reinforcing sleeves inserted on the outer surface of the inner-layer prepreg are vertically arranged between the upper end face of the permanent magnet and the lower end face of the magnetic drum end cover.

Preferably, the triangular openings or the straight openings of the plurality of intermediate filling reinforcing sleeves are arranged in a staggered position.

Preferably, the material of the middle filling reinforcing sleeve is polytetrafluoroethylene.

The utility model has the advantages of, because between the up end of permanent magnet and the lower terminal surface of magnetic drum end cover, it packs the uide bushing in the middle of the surface cartridge of inlayer preimpregnation material to be located, the step of winding preimpregnation material in a large number in this clearance has just so been simplified, a large amount of extravagant preimpregnation material has been avoided, the material cost of magnetic drum has been reduced, this winding process has been removed, manufacturing cost has been saved again, pack the uide bushing in the middle of directly building in this clearance, the thickness uniformity of outer preimpregnation material has been guaranteed, when through high temperature curing like this, because winding preimpregnation material thickness is even, the inhomogeneous problem of stress distribution can not appear during the curing, can not appear warping, can not influence final magnetic drum's quality, uniformity and homogeneity.

The tightening open slot is formed in the circumference of the middle filling reinforcing sleeve, so that the splicing operation is convenient, the middle filling reinforcing sleeve can be conveniently opened in the form of the open slot because the viscosity of the surface of the prepreg can not be directly sleeved on the surface of the inner-layer prepreg, then the middle filling reinforcing sleeve is inserted on the outer surface of the inner-layer prepreg, and then the tightening open slot is tightened by applying a winding force to tightly wrap the outer surface of the inner-layer prepreg through the winding of the outer-layer prepreg; the tightening open slot can be in a triangular opening shape or a straight opening shape, when the triangular opening shape is selected, the winding force of the outer-layer prepreg tightly tightens the triangular opening to form tight connection, the surface is very flat, a gap with deep depth cannot appear, so that the outer-layer prepreg wound on the outer surface cannot enter the gap when being dried, the curing can be very stable, and the stress distribution is uniform.

Because the axial direction along the middle filling reinforcing sleeve is obliquely distributed, the stable and smooth transition of the surface is further ensured, obvious straight gap traces are not generated, the stability of the curing process is ensured, and the quality of the product is further ensured.

Drawings

Fig. 1 is a schematic three-dimensional structure diagram of the magnetic drum of the linear compressor of the present invention;

FIG. 2 is a front view of FIG. 1;

FIG. 3 is a cross-sectional view of FIG. 2;

FIG. 4 is an enlarged view at B of FIG. 3;

FIG. 5 is a schematic view of the structure when an inner layer of prepreg is wrapped around the fabrication tool;

FIG. 6 is a schematic view of a permanent magnet affixed to a fabrication tool and a magnetic bucket end cap installed;

FIG. 7 is a schematic view of the structure with the lock nut installed;

FIG. 8 is a schematic representation of a permanent magnet after wrapping an outer layer of prepreg around the outer surface;

FIG. 9 is a front view of FIG. 8;

FIG. 10 is a cross-sectional view of FIG. 9;

FIG. 11 is an enlarged view at A of FIG. 10;

FIG. 12 is a schematic view of an intermediate filled reinforcement sleeve;

FIG. 13 is an enlarged view at Z of FIG. 12;

FIG. 14 is a front view of FIG. 12;

FIG. 15 is a schematic view of a further alternative construction of FIG. 12;

FIG. 16 is a schematic view of yet another construction of the center-filled reinforcement sleeve;

FIG. 17 is a schematic illustration of a single piece center-filled reinforcement sleeve for use with multiple pieces;

FIG. 18 is a schematic view of an intermediate filled reinforcement sleeve used in combination with multiple pieces.

The symbols in the drawings illustrate that:

1. manufacturing a tool; 2. a linear compressor magnetic bucket; 101. a bottom locating flange; 102. demolding and ejecting the sleeve; 103. an end cap axial positioning surface; 104. a small shaft; 105. locking the threads; 106. positioning a pillow block at the center hole of the end cover; 107. winding and positioning the outer circular surface; 108. a winding section; 2. a linear compressor magnetic bucket; a permanent magnet 201; 202. inner prepreg; 203. outer prepreg; 204. a permanent magnet end positioning sleeve; 205. filling a reinforcing sleeve in the middle; 20501. tightening the open slot; 206. a magnetic bucket end cover; 207. an outer prepreg upper end extension; 208. an outer prepreg lower end extension; 209. an inner prepreg extension; 3. locking the nut; 4. a high temperature protective pad;

Detailed Description

The present invention will be further described with reference to the following examples.

Fig. 1-18 show an embodiment of the present invention of a method for processing a magnetic drum of a linear compressor, which comprises the following steps:

(1) preparing a linear compressor magnetic barrel manufacturing tool 1, sleeving a demolding ejection sleeve 102 on the outer surface of a winding part 108, smearing a demolding agent on the demolding ejection sleeve 102 and the outer surface of the linear compressor magnetic barrel manufacturing tool 1, and then putting the linear compressor magnetic barrel manufacturing tool 1 into an oven for heating;

(2) winding inner prepreg 202 on the outer surface of winding section 108;

(3) sleeving a permanent magnet end positioning sleeve 204 on the outer surface of the inner prepreg 202, sleeving the permanent magnet end positioning sleeve 204 at the bottom end of the manufacturing tool 1 and at the upper end of the demolding ejection sleeve 102;

(4) sleeving a magnetic barrel end cover 206 on the top end of the inner-layer prepreg 202, installing a locking nut 3 on the manufacturing tool 1, and tightly pressing the magnetic barrel end cover 206;

(5) permanent magnets 201 are uniformly adhered to the upper end of the permanent magnet end positioning sleeve 204 and the outer surface of the inner-layer prepreg 202;

(6) a middle filling reinforcing sleeve 205 is inserted between the upper end face of the permanent magnet 201 and the lower end face of the magnetic drum end cover 206 and positioned on the outer surface of the inner-layer prepreg 202;

(7) winding outer-layer prepreg 203 on the outer surfaces of the permanent magnet end positioning sleeves 204, the outer surfaces of the permanent magnets 201, the outer surface of the middle filling reinforcing sleeve 205 and the outer surface of the lower end of the magnetic bucket end cover 206;

the upper part of the outer layer prepreg 203 is an outer layer prepreg upper end extension part 207, and the outer layer prepreg upper end extension part 207 is wound on the lower end part of the compaction magnetic drum end cover 206; the lower part of the outer-layer prepreg 203 is an outer-layer prepreg lower end extension part 208, and the outer-layer prepreg lower end extension part 208 is wound and compacted with the permanent magnet end positioning sleeve 204;

(8) a plastic film is wound outside the outer-layer prepreg 203, so that the end positioning sleeve 204 of the permanent magnet, the permanent magnet 201, the middle filling reinforcing sleeve 205 and the end cover 206 of the magnetic bucket are tightly attached together;

(9) putting the linear compressor magnetic bucket manufacturing tool 1, the demolding ejection sleeve 102, the permanent magnet end positioning sleeve 204, the inner-layer prepreg 202 wound on the outer surface of the tool 1, the permanent magnet 201, the middle filling reinforcing sleeve 205, the magnetic bucket end cover 206 and the outer-layer prepreg 203 into a curing furnace to be heated and cured, and finishing curing of the linear compressor magnetic bucket;

(10) removing the outermost plastic film from the linear compressor magnetic barrel cured in the previous procedure, loosening the locking nut, and releasing the linear compressor magnetic barrel cured and molded by applying axial force on the demolding ejection sleeve 102;

(11) and grinding the end face of the bottom of the linear compressor magnetic barrel which is formed by curing, and removing burrs on the surface to reach the required size.

Because between the upper end face of the permanent magnet 201 and the lower end face of the magnetic drum end cover 206, the reinforcing sleeve 205 is filled in the middle of the outer surface of the inner-layer prepreg 202 in the inserting mode, the step of winding a large amount of prepregs in the gap is simplified, the waste of a large amount of prepreg materials is avoided, the material cost of the magnetic drum is reduced, the winding process is omitted, the manufacturing cost is saved, the reinforcing sleeve 205 is directly arranged in the gap in a built-in mode, the thickness uniformity of the outer-layer prepreg 203 is guaranteed, and therefore when the magnetic drum is cured at high temperature, the problem of uneven stress distribution cannot occur during curing, deformation cannot occur, the quality of the final magnetic drum cannot be influenced, the uniformity and uniformity of the cured magnetic drum are good, and the quality is stable.

In this embodiment, after the above step (6) is completed, an intermediate prepreg is wound around the outer surfaces of the lower end surfaces of the intermediate filling reinforcing sleeve 205 and the magnetic bucket end cover 206, so that the intermediate filling reinforcing sleeve and the magnetic bucket end cover can be initially formed and cured, and this step can be omitted, thereby saving the processing cost.

The structure of the linear compressor magnetic drum manufacturing tool 1 can be seen in fig. 5-8, the linear compressor magnetic drum manufacturing tool 1 is provided with a bottom positioning flange 101, the upper portion of the bottom positioning flange 101 is provided with a winding portion 108, the outer surface of the winding portion 108 is a winding positioning outer circular surface 107, the upper end of the winding portion 108 is provided with an end cover central hole positioning boss 106, the upper end surface of the winding portion 108 is an end cover axial positioning surface 103, the upper end of the end cover central hole positioning boss 106 is provided with a locking thread 105, the upper end of the locking thread 105 is provided with a small shaft 104, the outer surface of the upper portion of the bottom positioning flange 101, which is located on the winding portion 108, is sleeved with a demolding ejection sleeve 102, and the demolding ejection sleeve 102 can. The tool can guarantee large-batch production, the consistency of products is guaranteed, and the tool 1 can be recycled.

A spacer may be placed between the upper end surface of the magnetic bucket end cover 206 and the lock nut 3, so that the upper surface of the magnetic bucket end cover 206 is protected from being damaged when the lock nut 3 presses the magnetic bucket end cover 206.

FIGS. 12-18 are schematic views of various embodiments of the mid-fill reinforcing sleeve 205, wherein it can be seen that the mid-fill reinforcing sleeve 205 is circumferentially provided with tightening open slots 20501, and the mid-fill reinforcing sleeve 205 is circumferentially provided with tightening open slots 20501 that are triangular or straight openings; the triangular openings or the straight openings are distributed straight or diagonally along the axial direction of the middle filling reinforcement sleeve 205.

Between the upper end face of the permanent magnet 201 and the lower end face of the magnetic drum end cover 206, a plurality of intermediate filling reinforcing sleeves 205 inserted on the outer surface of the inner prepreg 202 are arranged up and down, and triangular openings or straight openings of the plurality of intermediate filling reinforcing sleeves 205 are arranged in a staggered position.

In the implementation, the material of the middle filling reinforcing sleeve 205 can be non-metallic materials such as polytetrafluoroethylene, nylon, PVC, PE and the like, which not only has certain elasticity, but also can meet the requirements of high temperature process, and especially the polytetrafluoroethylene material is very suitable for the process.

In the technical scheme, the tightening open slot 20501 is formed in the circumference of the middle filling reinforcing sleeve 205, so that the splicing operation is convenient, the viscosity of the surface of the prepreg cannot be directly sleeved on the surface of the inner-layer prepreg 202, the middle filling reinforcing sleeve 205 is conveniently opened in the form of the open slot, then the prepreg is inserted into the outer surface of the inner-layer prepreg 202, and then the outer-layer prepreg 203 is wound, and the tightening open slot 20501 is tightened by applying a winding force to tightly wrap the outer surface of the inner-layer prepreg 202; the tightening open groove 20501 may be a triangular opening or a straight opening, and when the triangular opening is selected, the winding force of the outer-layer prepreg 203 tightly tightens the triangular opening to form tight connection, so that the surface is very flat, and a gap with a deep depth does not appear, so that the outer-layer prepreg 203 wound on the outer surface does not enter the gap when being dried, and can be cured very stably, and the stress distribution is uniform.

Because the axial direction along the middle filling reinforcing sleeve 205 is obliquely distributed, the smooth transition of the surface is further ensured, obvious straight gap traces are not generated, the stability of the curing process is ensured, and the quality of the product is further ensured.

As clearly seen in fig. 1 to 4, the magnetic drum 2 of the linear compressor produced by the process of the embodiment is provided with an inner prepreg 202, a permanent magnet end positioning sleeve 204 is arranged on the outer circumference of the bottom of the inner prepreg 202, a plurality of permanent magnets 201 are uniformly distributed on the outer circumference of the inner prepreg 202 at the upper part of the permanent magnet end positioning sleeve 204, a middle filling reinforcing sleeve 205 is arranged on the outer circumference of the inner prepreg 202 at the upper part of the plurality of permanent magnets 201, and a magnetic drum end cover 206 is arranged on the upper part of the middle filling reinforcing sleeve 205; the outer circumferential diameter of the permanent magnet end positioning sleeve 204 is smaller than that of the permanent magnet 201, the outer circumferential diameter of the middle filling reinforcing sleeve 205 is smaller than that of the permanent magnet 201, and the outer circumferential diameter of the magnetic barrel end cover 206 is smaller than that of the permanent magnet 201; the outer circumference of the end positioning sleeve 204 of the permanent magnet, the outer circumference of the permanent magnet 201, the outer circumference of the middle filling reinforcing sleeve 205 and the outer circumference of the lower edge of the end cover 206 of the magnetic bucket are provided with the outer-layer prepreg 203, when high-temperature curing is carried out, the problem of uneven stress distribution can not occur during curing due to the uniform thickness of wound prepreg, deformation can not occur, the quality of the final magnetic bucket can not be influenced, the uniformity and the uniformity of the magnetic bucket after curing are good, the quality is stable, and compared with the prior manufacturing process, the efficiency is improved, and the quality is ensured.

In the linear compressor magnetic bucket 2, the diameter of the outer circumference of the permanent magnet end positioning sleeve 204 is smaller than that of the outer circumference of the permanent magnet 201, the diameter of the outer circumference of the middle filling reinforcing sleeve 205 is smaller than that of the outer circumference of the permanent magnet 201, and the diameter of the outer circumference of the magnetic bucket end cover 206 is smaller than that of the outer circumference of the permanent magnet 201.

However, the above description is only an embodiment of the present invention, and the scope of the present invention should not be limited thereto, so that the replacement of the equivalent components or the equivalent changes and modifications made according to the protection scope of the present invention should be covered by the claims of the present invention.

Claims (7)

1. The utility model provides a linear compressor magnetic bucket, characterized by: the magnetic drum is provided with an inner-layer prepreg, a permanent magnet end positioning sleeve is arranged on the outer circumference of the bottom of the inner-layer prepreg, a plurality of permanent magnets are uniformly distributed on the upper part of the permanent magnet end positioning sleeve positioned on the outer circumference of the inner-layer prepreg, a middle filling reinforcing sleeve is arranged on the upper part of the plurality of permanent magnets positioned on the outer circumference of the inner-layer prepreg, and a magnetic drum end cover is arranged on the upper part of the middle filling reinforcing sleeve; the diameter of the outer circumference of the end positioning sleeve of the permanent magnet is smaller than that of the outer circumference of the permanent magnet, the diameter of the outer circumference of the middle filling reinforcing sleeve is smaller than that of the outer circumference of the permanent magnet, and the diameter of the outer circumference of the end cover of the magnetic bucket is smaller than that of the outer circumference of the permanent magnet; outer-layer prepreg is arranged on the outer circumference of the end positioning sleeve of the permanent magnet, the outer circumference of the middle filling reinforcing sleeve and the outer circumference of the lower edge of the end cover of the magnetic bucket.

2. The magnetic bucket of linear compressor as claimed in claim 1, wherein: the middle filling reinforcing sleeve is provided with a tightening open slot on the circumference.

3. The magnetic bucket of linear compressor as claimed in claim 2, wherein: the tightening open slot of the middle filling reinforcing sleeve on the circumference is a triangular opening or a straight opening.

4. A linear compressor magnetic bucket according to claim 3 wherein: the triangular openings or the straight openings are distributed in a straight way or in an inclined way along the axial direction of the middle filling reinforcing sleeve.

5. The magnetic bucket of linear compressor as claimed in claim 1, wherein: a plurality of middle filling reinforcing sleeves which are inserted on the outer surface of the inner-layer prepreg are vertically arranged between the upper end surface of the permanent magnet and the lower end surface of the magnetic barrel end cover.

6. The magnetic bucket of linear compressor as claimed in claim 5, wherein: the triangular openings or the straight openings of the middle filling reinforcing sleeves are arranged in a staggered position.

7. The magnetic bucket of linear compressor as claimed in claim 1, wherein: the middle filling reinforcing sleeve is made of polytetrafluoroethylene.

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