CN112820531B - Device and method for bonding base with annular groove and permanent magnet - Google Patents
Device and method for bonding base with annular groove and permanent magnet Download PDFInfo
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- CN112820531B CN112820531B CN202110142736.2A CN202110142736A CN112820531B CN 112820531 B CN112820531 B CN 112820531B CN 202110142736 A CN202110142736 A CN 202110142736A CN 112820531 B CN112820531 B CN 112820531B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/0253—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing permanent magnets
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention belongs to the technical field of permanent magnet assembly, and relates to a device and a method for bonding a base with an annular groove and a permanent magnet, aiming at solving the problems of high cost, low efficiency and long time consumption in bonding the base with the permanent magnet. This bonding device produces the opposite magnetic field with the polarity of permanent magnet through this magnetism repulsive device to produce repulsion force to the permanent magnet, can avoid belt annular groove base when bonding with the permanent magnet, because of the permanent magnet magnetic force, make permanent magnet and base bump, lead to the permanent magnet to collapse angle and crackle, and at the electric current of disconnection coil, bonding device loses the magnetic field, and the permanent magnet then implements quick, accurate bonding with belt annular groove base.
Description
Technical Field
The invention belongs to the technical field of permanent magnet assembly, and particularly relates to a device and a method for bonding a base with an annular groove and a permanent magnet.
Background
In engineering practice, a permanent magnet with high magnetism needs to be bonded in a base with an annular groove, after the base with the annular groove is bonded with the permanent magnet, the gap between the permanent magnet and the inner diameter of the base is small and is about 1mm, the base with the annular groove is in a closed state except for a hole at the end for mounting the permanent magnet, and an annular blind groove is formed in the inner cavity of the base, such as the configuration diagram of the base with the annular groove and the permanent magnet shown in fig. 1 after bonding.
At present, a permanent magnet is firstly bonded on a fixing ring by using a fixing ring and then manually stretched into a base with an annular groove for bonding. However, because the magnetic force of the permanent magnet is large, when the permanent magnet is adhered to the base by using the fixing ring, the permanent magnet collides with the adhering surface of the base and the inner cavity wall, the permanent magnet is easily damaged, so that the permanent magnet is broken, and the permanent magnet is scrapped. When the permanent magnet and the fixing ring are bonded, the permanent magnet and the fixing ring need to be fixed by using the adhesive plaster, the fixing ring is difficult to separate from the permanent magnet after the permanent magnet is bonded with the base, and the fixing ring is separated from the permanent magnet by using external force, so that the permanent magnet and the base are bonded unreliably by the external force. In addition, during the process of using the adhesive plaster, adhesive plaster residues are generated to be adhered to the permanent magnet, so that the cleaning is difficult, the whole adhering process is long in time, and the efficiency is low. Therefore, a bonding device is needed, when bonding, the permanent magnet is not only guaranteed not to collide with the base with the annular groove due to magnetic force, so that the permanent magnet is damaged, but also the requirement that the coaxiality of the inner cylindrical surface of the base with the annular groove and the outer cylindrical surface of the permanent magnet reaches 0.02 is met.
Disclosure of Invention
In view of the above, the present invention provides a device and a method for bonding a base with an annular groove and a permanent magnet, and aims to solve the problems of high cost, low efficiency and long time consumption in bonding the base with the annular groove and the permanent magnet.
In order to achieve the purpose, the invention provides a bonding device of a base with an annular groove and a permanent magnet, which comprises a base, wherein the base is provided with the base with the annular groove, a magnetic repulsion device used for releasing the polarity opposite to that of the permanent magnet and a lifting sealing mechanism used for contacting the permanent magnet with a bonding surface at the bottom of the base with the annular groove, the magnetic repulsion device consists of a coil, a power supply and a switch, and the coil is wound outside the base with the annular groove and is connected with the power supply through the switch. By adopting the scheme, the magnetic field polarity generated by the magnetic repulsion device is opposite, and the permanent magnet generates repulsion force, so that the situation that the permanent magnet collapses and cracks are caused when the annular groove base is bonded with the permanent magnet due to the magnetic force of the permanent magnet when the annular groove base is bonded with the permanent magnet, the current of a coil is disconnected, the magnetic field of the bonding device is lost, and the permanent magnet is bonded with the base can be avoided.
Furthermore, the lifting sealing mechanism consists of a guide sleeve, a screw rod, a support frame and a magnetic isolation pad, wherein the support frame is arranged on the base through a screw assembly; the screw rod is rotatably arranged on the support frame and can extend into the guide sleeve; the guide sleeve is used for accommodating the permanent magnet and is inserted into the annular groove base; the screw rod is provided with a magnetic isolation pad at the corresponding end facing the guide sleeve. By adopting the scheme, the bonding device can enable the permanent magnet to move in the guide sleeve through the lifting sealing mechanism and the feeding of the screw rod.
Further, the magnetism isolating pad is a ceramic gasket. The magnetic-isolating ceramic gasket plays a role in protecting the permanent magnet from scratching the surface due to the rotation of the screw rod.
Furthermore, the lifting sealing mechanism also comprises a hand wheel arranged on the screw rod. The screw rod is convenient to rotate, and the operation is convenient.
Further, the support frame includes two slotted poles of symmetrical arrangement and the cross arm of connection between two slotted poles. Make this support frame stable in structure, the atress is reasonable, is convenient for to the rotatory operation of screw rod.
Furthermore, the outer wall of the guide sleeve is provided with a step for abutting against the upper surface of the base with the annular groove. Therefore, the requirement on the coaxiality of the inner ring cylindrical surface of the annular groove base and the outer cylindrical surface of the permanent magnet can be met through the position tolerance precision of the inner ring and the outer ring of the guide sleeve.
The invention also provides a bonding method based on the bonding device of the annular groove base and the permanent magnet, which comprises the following steps: fixing a base with an annular groove on a base, and inserting a guide sleeve into the base; then, a switch with the opposite polarity is switched on according to the polarity of the permanent magnet, so that a power supply is electrified to the coil, and the annular groove base with the ring generates a repulsive magnetic field with the polarity opposite to that of the permanent magnet; then, placing the permanent magnet into the guide sleeve, and contacting the permanent magnet with the bonding surface of the annular groove base through the spiral rod; then the switch is cut off, and the permanent magnet is bonded and solidified on the base with the annular groove; then the screw rod is withdrawn, the guide sleeve is pulled out, and the ring-shaped groove base bonded and solidified with the permanent magnet is taken out.
The invention has the beneficial effects that:
1. the bonding device generates a magnetic field with the magnetism opposite to that of the permanent magnet through the magnetic repulsion device so as to repel the permanent magnet, so that the permanent magnet is prevented from being attracted with the annular groove matrix, and the permanent magnet is prevented from being damaged due to the magnetic attraction between the permanent magnet and the annular groove matrix.
2. The bonding device can accurately position and feed the permanent magnet and the annular groove base with high bonding requirement through the effective feeding of the precise spiral guide mechanism so as to push the permanent magnet to be in contact with the bonding surface of the annular groove base, then the power switch is switched off, the magnetic field of the magnetic repulsion device disappears, the permanent magnet and the annular groove base are rapidly and directly bonded, the bonding coaxiality requirement of the permanent magnet and the annular groove base is ensured through the positioning sleeve, and the bonding precision is ensured.
3. The bonding device can select the magnetic repulsion device to generate different magnetic field polarities through the power-on switch so as to bond the permanent magnets with different polarities.
4. Compared with the prior art, the bonding device does not need auxiliary bonding such as adhesive plaster in the bonding process, and can not bring in excess, thereby reducing the process of clearing the excess and being beneficial to improving the bonding efficiency.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
For the purposes of promoting a better understanding of the objects, aspects and advantages of the invention, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
fig. 1 is a diagram showing the shape and bonded structure of a conventional base with an annular groove and a permanent magnet.
Fig. 2 is a schematic front view of the bonding apparatus of the present invention.
Fig. 3 is a schematic top view of fig. 2.
Fig. 4 is a schematic view of the internal magnetic repulsion apparatus of fig. 3.
Fig. 5 is an electrical schematic diagram of the magnetic repulsion apparatus of fig. 4.
Fig. 6 is an exploded view of the lift seal mechanism of fig. 2.
The reference signs are: the magnetic separation device comprises a ring-shaped groove base 1, a permanent magnet 2, a base 3, a magnetic repulsion device 4, a coil 5, a power supply 6, a switch 7, a lifting sealing mechanism 8, a guide sleeve 9, a screw rod 10, a support frame 11, a hand wheel 12, a magnetic separation pad 13 and a screw assembly 14.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the invention only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the invention thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
As shown in fig. 1-6, the bonding device for a base with an annular groove and a permanent magnet according to this embodiment includes a base, a magnetic repulsion device 4 and a lifting sealing mechanism 8, which are disposed on the base 3, wherein the magnetic repulsion device 4 is used for releasing a magnetic field with a polarity opposite to that of the permanent magnet 2, and is composed of a coil 5, a power supply 6 and a switch 7, the coil 5 is installed around the base 1 with the annular groove and connected to the power supply 6 through the switch 7, and the operation relationship is as follows: after the ring-shaped groove base is fixed in the base mounting hole, a switch is switched on according to the needed polarity, so that a power supply supplies power to the coil, the ring-shaped groove base generates a repulsion magnetic field which is fixed and has the opposite polarity to the permanent magnet, after the permanent magnet is in contact with the bonding surface of the ring-shaped groove base, and the lifting sealing mechanism presses the permanent magnet tightly, the switch is switched off, the coil does not generate the repulsion magnetic field any more, and the permanent magnet is directly and quickly bonded with the ring-shaped groove base; the lifting sealing mechanism 8 consists of a guide sleeve 9, a screw rod 10, a support frame 11, a hand wheel 12, a magnetic isolation pad 13 and a screw assembly 14, wherein the support frame 11 is arranged on the base 3 through the screw assembly 14; the screw rod 10 is rotatably arranged on the support frame 11 and can extend into the guide sleeve 9; the guide sleeve 9 is used for accommodating the permanent magnet 2 and is inserted into the annular groove base 1; the screw rod 10 is provided with a magnetic isolation pad at the corresponding end facing the guide sleeve 9; the action relationship is as follows: the uide bushing inserts in the annular groove base, treats that magnetism repulsive device circular telegram produces repulsive magnetic field after, puts into the uide bushing with the permanent magnet, then uses magnetism isolating pad to keep apart permanent magnet and hob tip, through rotating the hand wheel, drives the hob, promotes the permanent magnet and removes, and after the permanent magnet contacted with the bonding surface of annular groove base, disconnection circular telegram switch made the permanent magnet contact and the solidification of bonding, guaranteed the switching axiality of permanent magnet and annular groove base.
In the embodiment, the coil 5 of the magnetic repulsion apparatus 4 is wound by a copper enameled wire with a diameter of 0.05mm, the number of turns is 660 turns, when winding is performed, a layer of oily enameled silk is padded after each layer of winding is completed, and after winding is completed, the coil is coated with an insulating glue film and is molded and dried. The power source 6 can be formed by connecting two 12V batteries in series, the switch 7 is a two-pole three-throw switch, and the electric welding is carried out according to the electric schematic diagram of the magnetic repulsion device in figure 5. The coil 5 is fixed on the base 3 by using epoxy glue, and the power supply 6 and the switch 7 are fixed on the base 3 by mounting screws.
The following description of the installation of the present bonding apparatus is presented: firstly, fixing a magnetic repulsion device on a base by using a screw assembly and epoxy glue and carrying out electrical connection; then the support frame is arranged on the base, and then the hand wheel and the screw rod are fixed through screws and screwed into the support frame through threads; when the annular groove base is bonded with the permanent magnet, the annular groove base is firstly arranged in a corresponding hole of the base, then the guide sleeve is inserted into the annular groove base mounting hole, the switch is switched on according to polarity requirements, then the permanent magnet and the ceramic gasket are sequentially arranged in the guide sleeve, and the hand wheel is manually rotated to enable the end part of the screw rod to push the ceramic gasket and the permanent magnet to move.
The specific working principle is explained as follows: when the annular groove base is adhered with the permanent magnet, firstly, the annular groove base is placed into a corresponding mounting hole of the base, the guide sleeve is inserted into the annular groove base hole, the switch is switched on according to the polarity requirement, the power supply supplies power to the electrified coil, the annular groove base generates a fixed repelling magnetic field with the polarity opposite to that of the permanent magnet, then, the permanent magnet and the ceramic gasket are sequentially placed into the guide sleeve, at the moment, the electrified coil enables the annular groove base to generate a magnetic field with the polarity opposite to that of the permanent magnet, the permanent magnet cannot collide with the annular groove base due to magnetic force, then, the hand wheel is rotated, the ceramic gasket and the permanent magnet are pushed by the spiral rod to move, after the permanent magnet is contacted with the adhesive surface of the annular groove base, the spiral rod compresses the permanent magnet, the electrified switch is switched off, the electrified coil does not generate a magnetic field any more, and the permanent magnet is adhered and solidified with the annular groove base, the hand wheel is rotated, the screw rod and the ceramic gasket are withdrawn, the guide sleeve is taken out, and then the assembly formed by bonding the annular groove base with the permanent magnet is taken out from the base, so that the permanent magnet and the annular groove base are bonded reliably and accurately.
Compared with the prior art: the magnetic repulsion device can prevent the permanent magnet from colliding with the annular groove base due to magnetic force in the process of bonding the annular groove base and the permanent magnet, so that the permanent magnet is not damaged, and a broken angle and a crack are generated, so that the permanent magnet is scrapped and the bonding fails; the coaxiality of the inner annular cylindrical surface of the annular groove base and the outer cylindrical surface of the permanent magnet can be effectively ensured through the guide sleeve, and the structure is simple and effective; in addition, the bonding device does not use other auxiliary bonding materials such as adhesive plaster and the like, and has the advantages of convenient cleaning, simple bonding and greatly shortened cycle.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
Claims (6)
1. The bonding device for the base with the annular groove and the permanent magnet comprises a base (3) and is characterized in that the base is provided with the base with the annular groove (1), a magnetic repulsion device (4) used for releasing the polarity opposite to that of the permanent magnet (2) and a lifting sealing mechanism (8) used for contacting the permanent magnet with a bonding surface at the bottom of the base with the annular groove, the magnetic repulsion device comprises a coil (5), a power supply (6) and a switch (7), and the coil surrounds the base with the annular groove (1) and is connected with the power supply through the switch; the lifting sealing mechanism consists of a guide sleeve (9), a screw rod (10), a support frame (11) and a magnetic isolation pad (13), and the support frame is arranged on the base through a screw component (14); the screw rod is rotatably arranged on the support frame and can extend into the guide sleeve; the guide sleeve is used for accommodating the permanent magnet and is inserted into the annular groove base; the screw rod is provided with a magnetic isolation pad at the corresponding end facing the guide sleeve.
2. The bonding device for the annular groove base and the permanent magnet according to claim 1, wherein the magnetism isolating pad is a ceramic gasket.
3. The bonding device for the ring-shaped groove base and the permanent magnet according to claim 1, wherein the lifting sealing mechanism further comprises a hand wheel (12) arranged on the screw rod.
4. The device for bonding the annular groove base with the permanent magnet according to claim 1, wherein the support frame comprises two groove rods which are symmetrically arranged and a cross arm connected between the two groove rods.
5. The bonding device for the annular groove base and the permanent magnet according to claim 1, wherein the outer wall of the guide sleeve is provided with a step for abutting against the upper surface of the annular groove base.
6. A method for bonding a base with a ring-shaped groove and a permanent magnet, wherein the bonding device according to any one of claims 1 to 5 is used, the method comprising: firstly, fixing a base with an annular groove on a base, and inserting a guide sleeve into the base; then, a switch with the opposite polarity is switched on according to the polarity of the permanent magnet, so that a power supply is electrified to the coil, and the annular groove base with the ring generates a repulsive magnetic field with the polarity opposite to that of the permanent magnet; then the permanent magnet is placed in the guide sleeve and is contacted with the bonding surface of the annular groove base through the spiral rod; then the switch is cut off, and the permanent magnet is bonded and solidified on the base with the annular groove; then the screw rod is withdrawn, the guide sleeve is pulled out, and the ring-shaped groove base bonded and solidified with the permanent magnet is taken out.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110142736.2A CN112820531B (en) | 2021-02-02 | 2021-02-02 | Device and method for bonding base with annular groove and permanent magnet |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110142736.2A CN112820531B (en) | 2021-02-02 | 2021-02-02 | Device and method for bonding base with annular groove and permanent magnet |
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| CN112820531B true CN112820531B (en) | 2022-06-24 |
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