CN108682532B - Magnetizing device for rubber magnetic sheet - Google Patents
Magnetizing device for rubber magnetic sheet Download PDFInfo
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- CN108682532B CN108682532B CN201810531763.7A CN201810531763A CN108682532B CN 108682532 B CN108682532 B CN 108682532B CN 201810531763 A CN201810531763 A CN 201810531763A CN 108682532 B CN108682532 B CN 108682532B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F13/00—Apparatus or processes for magnetising or demagnetising
Abstract
The invention discloses a magnetizing device for rubber magnetic sheets, which comprises a base, wherein a conveying track for horizontally conveying the rubber magnetic sheets and a permanent magnet group positioned above the conveying track are arranged on the base, an output roller for outputting the rubber magnetic sheets is arranged at the starting end of the conveying track, a storage roller for winding the rubber magnetic sheets which are magnetized is arranged at the tail end of the conveying track, the permanent magnet group comprises a plurality of first permanent magnet sheet bodies and second permanent magnet sheet bodies, the thickness directions of the first permanent magnet sheet bodies and the second permanent magnet sheet bodies are positioned in the horizontal plane, the first permanent magnet sheet bodies and the second permanent magnet sheet bodies are the same in appearance size, the first permanent magnet sheet bodies and the second permanent magnet sheet bodies are arranged at intervals along the conveying direction of the conveying track, the lower sides of the first permanent magnet sheet bodies are N poles, and the upper sides of the second permanent magnet sheet bodies are N poles. The invention has simple structure, saves electricity and protects environment, and can obviously improve the intensity of the magnetizing magnetic field on the premise of not increasing the overall dimension.
Description
Technical Field
The invention relates to the technical field of magnetic material manufacturing, in particular to a magnetizing device of a rubber magnetic sheet.
Background
The rubber magnet is made of permanent ferrite magnetic powder or neodymium magnetic powder, rubber (or resin) and other organic matters and other additives through extrusion and calendering, wherein the application of the continuous strip sheet rubber magnet is most extensive. The rubber magnetic sheet can be shaped according to the required size, and can be coated with PVC, gum, UV oil and the like according to the requirements of customers. The product has simple production process and low cost, and is widely applied to the fields of refrigerator door suckers, advertisement magnets, toys, teaching instruments, daily households and the like.
The rubber magnetic sheet needs to be magnetized after extrusion and calendaring molding, and the common magnetizing devices have two types:
the first kind adopts the coil to magnetize, specifically includes base, magnetizing coil, and magnetizing coil is including fixing iron core and the copper line on the base, and the up end of iron core is provided with a plurality of wire winding grooves of radial extension, and a plurality of wire winding grooves evenly divide the up end of iron core equally, and magnetizing coil circular telegram back produces magnetic field to magnetize rubber magnetism magnetic sheet. However, the method of magnetizing the coil has the problems of complex structure, cooling water for cooling the magnetizing coil when the magnetizing coil works for a long time with large current, high power consumption and the like.
The second kind adopts the permanent magnet to magnetize, specifically includes the base, sets up one row of permanent magnet group on the base, and permanent magnet group comprises a plurality of permanent magnets range side by side, when the rubber magnetism magnetic sheet passes through permanent magnet group, can realize magnetizing to the rubber magnetism magnetic sheet. Because the energy-saving type solar water heater does not need power consumption, the energy-saving type solar water heater has the characteristics of energy conservation and environmental protection, and is beneficial to prolonging the service life. However, the magnetizing solution has the following problems: it is known that one end of the permanent magnet is an N pole, the other end is an S pole, magnetic lines of force start from the N pole at one end and then return to the S pole at the other end outside the permanent magnet, and magnetic lines of force start from the S pole to the N pole inside the permanent magnet, so that the magnetic lines of force form a closed loop, and the magnetic field strength at both ends of the permanent magnet is the same. Thus, when a plurality of permanent magnets arranged side by side form a permanent magnet group, the magnetic field intensity of both sides of the permanent magnet group is the same as that of a single permanent magnet, and only the length size of the magnetizing magnetic field is increased. When the intensity of the magnetic field for magnetizing needs to be increased, the overall size of the permanent magnet group can be increased, so that the overall size and the manufacturing cost of the device are increased.
Disclosure of Invention
The invention aims to solve the problems of complex structure, large power consumption, large overall dimension of a permanent magnet group and the like of a rubber magnetic sheet magnetizing device, and provides the rubber magnetic sheet magnetizing device which is simple in structure, saves electricity, is environment-friendly and can remarkably improve the intensity of the magnetized magnetic field.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a rubber magnetism magnetic sheet's magnetization device, includes the base, is equipped with the transfer orbit that is used for carrying rubber magnetism magnetic sheet horizontally on the base, is located the permanent magnet group of transfer orbit top, is equipped with the output cylinder that is used for exporting rubber magnetism magnetic sheet at the orbital initiating terminal of transfer, is equipped with the cylinder of accomodating that is used for convoluteing the rubber magnetism magnetic sheet of accomplishing magnetization at the orbital tail end of transfer, permanent magnet group includes a plurality of first permanent magnetism lamellar bodies, second permanent magnetism lamellar body, the thickness direction of first permanent magnetism lamellar body and second permanent magnetism lamellar body is located the horizontal plane, the overall dimension of first permanent magnetism lamellar body and second permanent magnetism lamellar body is the same, first permanent magnetism lamellar body and second permanent magnetism lamellar body interval arrangement to the downside of first permanent magnetism lamellar body is the N utmost point, and the upside of second permanent magnetism lamellar body is the N.
The magnetizing device of the invention adopts the permanent magnet group to generate the magnetizing magnetic field, thereby obviously reducing the power consumption and avoiding the cooling problem of cooling water caused by heating. It is known that for a permanent magnet, magnetic lines of force all emanate from the N pole, and then bend around the periphery of the permanent magnet and return to the S pole, while in the interior of the permanent magnet, the magnetic lines of force follow the S pole to the N pole, so that the magnetic lines of force form a closed loop. The prior art magnetizing devices using permanent magnets for magnetization usually simply arrange a plurality of permanent magnet units side by side, that is, the plurality of permanent magnet units arranged together are substantially equal to one large permanent magnet. For example, the lower side of the permanent magnet unit is an N pole, magnetic lines of force emitted by the N pole at the lower side of the permanent magnet unit cannot return to the S pole at the upper side through the permanent magnet units at both sides, and magnetic lines of force emitted by the N pole at the lower side of all the permanent magnet units return to the S pole at the upper side of the permanent magnet after surrounding the outer side of the whole permanent magnet, so that a large number of useless magnetic lines of force exist at the outer side of the whole permanent magnet, the magnetic flux of the unit area for magnetizing at the lower side of the whole permanent magnet is basically the same as the magnetic flux of the unit area of a single permanent magnet unit, and the magnetic fluxes of the front and rear parts of.
The permanent magnet group is formed by arranging a plurality of flaky first permanent magnet sheet bodies and second permanent magnet sheet bodies at intervals, and the magnetic pole direction of the first permanent magnet sheet bodies is opposite to that of the second permanent magnet sheet bodies. The downside of first permanent magnetism lamellar body is the N utmost point, and the downside of two adjacent preceding back second permanent magnetism lamellar bodies is the S utmost point. Magnetic force line that the downside N utmost point of first permanent magnetism lamellar body sent gets into the S utmost point of two adjacent second permanent magnetism lamellar body belows around after turning to both sides in, this magnetic force line is sent from the N utmost point of second permanent magnetism lamellar body upside after the second permanent magnetism lamellar body is internal, then turns back to both sides and gets into the S utmost point of two adjacent first permanent magnetism lamellar body upsides around this second permanent magnetism lamellar body in, finally gets back to the N utmost point of first permanent magnetism lamellar body downside again. That is to say, the magnetic force line in the outside of whole permanent magnet group reduces remarkably, and a large amount of magnetic force lines directly pass through in first, the second permanent-magnet piece for the magnetic field intensity of adjacent first permanent-magnet piece and second permanent-magnet piece can superpose effectively and multiply, thereby can show the magnetic field intensity of promoting magnetizing under the condition of not increasing permanent magnet group height dimension.
Preferably, a reinforcing magnetic group is arranged below the conveying track, the reinforcing magnetic group comprises a plurality of U-shaped magnets which are arranged side by side along the thickness direction of the first permanent magnet sheet body and the second permanent magnet sheet body, two ends of each U-shaped magnet correspond to the lower ends of the first permanent magnet sheet body and the second permanent magnet sheet body which are adjacent to the upper portion respectively, and the polarity of the two ends of each U-shaped magnet is opposite to that of the lower ends of the first permanent magnet sheet body and the second permanent magnet sheet body which correspond to the upper portion.
The lower side of the first permanent magnet sheet body is an N pole, the lower sides of the two adjacent front and back second permanent magnet sheet bodies are S poles, the end, opposite to the first permanent magnet sheet body, of the U-shaped magnet is the S pole, and the end, opposite to the second permanent magnet sheet body, of the U-shaped magnet is the N pole. It is known that magnetic lines of force emitted from the N pole on the lower side of the first permanent magnet sheet body are surrounded, and a part of the magnetic lines of force enter the adjacent second permanent magnet sheet body after being surrounded, so that the magnetic lines of force with partial useless left and right sides of the permanent magnet group exist. The U-shaped magnet can enable the magnetic force lines emitted by the N pole at the lower side of the first permanent magnet sheet body to penetrate through the rubber magnetic sheet and then mostly enter the S pole of the U-shaped magnet, the magnetic force lines are emitted from the N pole at the other end of the U-shaped magnet after being enhanced in the U-shaped magnet and return to the S pole at the lower side of the adjacent second permanent magnet sheet body after penetrating through the rubber magnetic sheet. That is, the reinforcing magnetic group disposed below the permanent magnet group can further increase the intensity of the magnetic field for magnetizing, and is beneficial to the concentration of magnetic lines of force, and the existence of useless magnetic lines of force is reduced.
Preferably, a magnetic conductive sheet body is arranged between the first permanent magnet sheet body and the second permanent magnet sheet body which are adjacent to each other, and the external dimension of the magnetic conductive sheet body is the same as that of the first permanent magnet sheet body and that of the second permanent magnet sheet body.
After the magnetic line that the downside N utmost point of first permanent magnetism lamellar body sent turned to both sides, in the S utmost point of two adjacent second permanent magnetism lamellar body belows around most entering, this magnetic line was sent out from the N utmost point of second permanent magnetism lamellar body upside after the reinforcing in the second permanent magnetism lamellar body, wherein most magnetic line gets into in the S utmost point of two adjacent first permanent magnetism lamellar body upsides around this second permanent magnetism lamellar body after the both sides are turned, finally gets back to the N utmost point of first permanent magnetism lamellar body downside again. The small part of the magnetic force line sent out from the lower N pole of the first permanent magnet sheet body enters the magnetic conductive sheet body which is attached front and back, and the small part of the magnetic force line sent out from the upper side of the magnetic conductive sheet body returns to the upper S pole of the first permanent magnet sheet body. That is, only part of the magnetic lines of force emitted from the lower N pole of the first permanent magnet piece is reinforced in the second permanent magnet piece adjacent in front and back. Therefore, the magnetizing magnetic field intensity of the permanent magnet group can be conveniently adjusted by adjusting the thickness of the magnetic conductive sheet body so as to adapt to the magnetizing requirements of different products.
As preferred, still be equipped with the third permanent magnetism lamellar body between adjacent first permanent magnetism lamellar body, the second permanent magnetism lamellar body on the array orientation of permanent magnet group, still be equipped with the fourth permanent magnetism lamellar body between adjacent second permanent magnetism lamellar body, the first permanent magnetism lamellar body on the array orientation of permanent magnet group, the overall dimension of third, fourth permanent magnetism lamellar body is the same with the overall dimension of first, second permanent magnetism lamellar body, and wherein the third permanent magnetism lamellar body pastes and leans on first permanent magnetism lamellar body one side for the N utmost point, and the fourth permanent magnetism lamellar body pastes and leans on first permanent magnetism lamellar body one side for the N utmost point.
Different from the scheme, the scheme is that a third permanent magnet sheet body is arranged between the adjacent first permanent magnet sheet bodies and the adjacent second permanent magnet sheet bodies, and a fourth permanent magnet sheet body is arranged between the adjacent second permanent magnet sheet bodies and the adjacent first permanent magnet sheet bodies. That is to say, first permanent magnetism lamellar body, third permanent magnetism lamellar body, second permanent magnetism lamellar body, fourth permanent magnetism lamellar body arrange in proper order and form the circulation. Different from the first and second permanent magnet sheets, the magnetic pole directions of the third and fourth permanent magnet sheets are along the transmission direction of the conveying track, and the magnetic pole directions of the third and fourth permanent magnet sheets are just opposite.
Because the N pole is arranged on one side of the third permanent magnet sheet body and the fourth permanent magnet sheet body which are arranged at the front side and the rear side of the first permanent magnet sheet body and are attached to the second permanent magnet sheet body, therefore, the magnetic force lines emitted from the N pole at the lower side of the first permanent magnet sheet body can not enter the third and fourth permanent magnet sheet bodies at the front and rear sides, the magnetic force line passes through the rubber magnetic sheet, turns upwards and enters the S pole at the lower side of the front and the rear two separated second permanent magnet sheets, the magnetic force line entering the S pole is enhanced for the first time in the second permanent magnet sheets and then is emitted from the N pole at the upper side of the second permanent magnet sheets, most of the enhanced magnetic lines of force turn to two sides directly and enter the third and fourth permanent magnet sheets which are adjacent in front and back respectively, the magnetic lines of force enter the adjacent first permanent magnet sheets after being enhanced for the second time in the third and fourth permanent magnet sheets, thereby can strengthen for the third time, the magnetic force line after the reinforcing finally sends out and magnetizes the rubber magnetism magnetic sheet below from the N utmost point of first permanent magnetism lamellar body downside. That is to say, on one hand, the magnetic force lines can be enhanced three times, so that the magnetic field intensity is obviously improved, on the other hand, most of the magnetic force lines positioned on the upper side of the permanent magnet group are absorbed into the third and fourth permanent magnet sheets, so that the magnetic field intensity on the lower side of the permanent magnet group is enhanced, and the magnetic field intensity on the upper side of the permanent magnet group is effectively weakened, so that the magnetizing effect can be effectively improved.
Preferably, equal-height rollers and a pressing wheel assembly are arranged beside the storage roller, the pressing wheel assembly comprises a supporting seat and a swinging arm rotatably arranged on the supporting seat, a pressing wheel driven by a speed reduction motor is arranged at the suspended end of the swinging arm, the pressing wheel is attached to the storage roller, and the upper sides of the equal-height rollers are flush with the conveying track.
Because the pinch roller is leaned on being used for coiling, accomodating the cylinder of accomodating of the product that accomplishes magnetizing by self weight, consequently, when gear motor drive pinch roller rotated, can rely on frictional force to drive the cylinder of accomodating that has the rubber magnetism magnetic sheet of coiling and rotate, and then the rubber magnetism magnetic sheet of drawing completion magnetizing to it is coiled on accomodating the cylinder. Because the rotation of pinch roller can remain stable unchangeable, correspondingly, the rubber magnetism magnetic sheet of coiling on accomodating the cylinder can keep the same linear velocity to ensure the uniform velocity of rubber magnetism magnetic sheet on the transfer orbit and remove, and then make the quality of magnetizing of rubber magnetism magnetic sheet keep stable.
Therefore, the invention has the following beneficial effects: the structure is simple, the electricity is saved, the environment is protected, and the magnetic field intensity of the magnetizing can be obviously improved on the premise of not increasing the overall dimension.
Drawings
Fig. 1 is a schematic view of a first arrangement of permanent magnet groups of the present invention.
Fig. 2 is a schematic view of another arrangement of permanent magnet groups of the present invention.
Fig. 3 is a schematic structural view of a permanent magnet group of embodiment 1, in which arrows indicate the directions of magnetic lines of force.
Fig. 4 is a schematic structural view of a permanent magnet group of embodiment 2, in which arrows indicate the directions of magnetic lines of force.
Fig. 5 is a schematic structural view of a permanent magnet group of embodiment 3, in which arrows indicate the directions of magnetic lines of force.
Fig. 6 is a schematic structural view of a permanent magnet group of embodiment 4, in which arrows indicate the directions of magnetic lines of force.
In the figure: 1. the rubber magnetic sheet 2, the base 3, the conveying track 31, the output roller 32, the storage roller 33, the equal-height rollers 4, the permanent magnet group 41, the first permanent magnet sheet 42, the second permanent magnet sheet 43, the third permanent magnet sheet 44, the fourth permanent magnet sheet 45, the magnetic conductive sheet 5, the pressing wheel assembly 51, the supporting seat 52, the swinging arm 53, the pressing wheel 6, the reinforcing magnetic group 61 and the U-shaped magnet.
Detailed Description
The invention is further described with reference to the following detailed description and accompanying drawings.
Example 1: as shown in fig. 1, a magnetizing device for rubber magnetic sheets, the rubber magnetic sheets to be magnetized can be manufactured by the following method: firstly, carrying out coupling treatment on ferrite magnetic powder, then stirring and drying, then adding a plasticizer, an anti-aging agent and a reinforcing agent into rubber, uniformly mixing the mixture on an open mill, then mixing the magnetic powder subjected to coupling treatment with the mixed rubber, then mixing the mixture in an internal mixer for 0.5-2 hours, controlling the internal mixing temperature at 80-100 ℃, and finally preparing the required rubber magnetic sheet by using a calender.
The magnetizing device for the rubber magnetic sheet comprises a base 2, wherein a conveying rail 3 for horizontally conveying the rubber magnetic sheet and a permanent magnet group 4 positioned above the conveying rail are arranged on the base, one end of the conveying rail is a starting end, the other end of the conveying rail is a tail end, an output roller 31 for outputting the rubber magnetic sheet is arranged at the starting end of the conveying rail, a containing roller 32 is arranged at the tail end of the conveying rail, and the rubber magnetic sheet 1 to be magnetized is wound on the output roller. When the rubber magnetic sheet needs to be magnetized, the rubber magnetic sheet moves horizontally along the conveying track, the permanent magnet group magnetizes the rubber magnetic sheet, and the rubber magnetic sheet after magnetizing is wound on the storage roller at the tail end.
In addition, as shown in fig. 1 and 3, the permanent magnet group includes a plurality of first permanent magnet sheet bodies 41 and second permanent magnet sheet bodies 42 (arrows in fig. 2 indicate the direction of magnetic lines of force), the first and second permanent magnet sheet bodies are both circular sheet-shaped, and the first and second permanent magnet sheet bodies have the same outer dimensions. The first permanent magnet sheet body and the second permanent magnet sheet body are vertically arranged, so that the thickness directions of the first permanent magnet sheet body and the second permanent magnet sheet body are positioned in the horizontal plane, and the permanent magnet group formed by overlapping the first permanent magnet sheet body and the second permanent magnet sheet body is in a cylinder shape. When the width of the rubber magnetism magnetic sheet that needs to magnetize was broad, the thickness direction of first permanent magnetism lamellar body and second permanent magnetism lamellar body can be perpendicular with transfer orbit's transport side mutually, that is to say, the width direction of first, second permanent magnetism lamellar body along rubber magnetism magnetic sheet in the permanent magnet group at this moment arranges to the length of permanent magnet group suits with the width of rubber magnetism magnetic sheet. When the rubber magnetic sheet to be magnetized is narrow in width, as shown in fig. 2, the first and second permanent magnet sheets may be rectangular sheets, and the thickness direction of the first and second permanent magnet sheets is consistent with the conveying direction of the conveying track, that is, the first and second permanent magnet sheets in the permanent magnet group are arranged along the length direction of the rubber magnetic sheet, and the width of the permanent magnet group is adapted to the width of the rubber magnetic sheet, and the permanent magnet group formed by overlapping the first and second permanent magnet sheets forms a rectangular column.
In addition, first permanent magnetism lamellar body and second permanent magnetism lamellar body should the interval range, arrange in proper order according to a first permanent magnetism lamellar body, a second permanent magnetism lamellar body, first permanent magnetism lamellar body again, second permanent magnetism lamellar body … … again promptly to the downside of first permanent magnetism lamellar body is the N utmost point, and the upside is the S utmost point, and the downside of second permanent magnetism lamellar body is the S utmost point, and the upside is the N utmost point, thereby makes whole permanent magnet group be the rectangular strip form of level placement. Like this, the magnetic line of force that the downside N of arbitrary first permanent magnetism lamellar body sent is in the S utmost point of two adjacent second permanent magnetism lamellar body belows around getting into after the both sides turn, and this magnetic line of force is sent out from the N utmost point of second permanent magnetism lamellar body upside after being strengthened in the second permanent magnetism lamellar body, then the magnetic line of force gets into in the S utmost point of two adjacent first permanent magnetism lamellar body upsides around this second permanent magnetism lamellar body after the both sides turn and is strengthened, finally gets back to the N utmost point of first permanent magnetism lamellar body downside again and sends downwards. That is to say, a large amount of magnetic lines of force in whole permanent magnet group directly pass through in first, the second permanent magnet piece, and the useless magnetic line of force that disperses outside whole permanent magnet group then significantly reduces for the magnetic field intensity of adjacent first permanent magnet piece and second permanent magnet piece can superpose effectively and multiply, thereby can show the magnetic field intensity of promoting magnetizing under the condition that does not increase permanent magnet group height dimension.
When the permanent magnet groups are arranged in the manner shown in fig. 1, the permanent magnet groups can be driven by the corresponding driving mechanism to rotate continuously around the axial line of the length direction of the permanent magnet groups during magnetization, so that the magnetic field intensity of the permanent magnet groups can be repeatedly utilized, and the uniformity during magnetization is ensured
It can be understood that the number of the second permanent magnet sheet bodies can be equal to the number of the first permanent magnet sheet bodies, at this time, the first permanent magnet sheet body is arranged at one end of the permanent magnet group, and the first permanent magnet sheet body is arranged at the other end of the permanent magnet group. Certainly, the number of the second permanent magnet sheet bodies can be one more or one less than that of the first permanent magnet sheet bodies, and at the moment, the heads and the tails of the permanent magnet groups are the second permanent magnet sheet bodies or the first permanent magnet sheet bodies.
Finally, the side of the receiving roller can be provided with a contour roller 33 and a pressing wheel assembly 5, the pressing wheel assembly comprises a supporting seat 51 and a swinging arm 52 rotatably arranged on the supporting seat, the free end of the swinging arm is provided with a pressing wheel 53 driven by a speed reduction motor (not shown in the figure), and the pressing wheel is attached to the upper side of the receiving roller.
Thus, when the rubber magnetic sheet is magnetized, the rubber magnetic sheet after being magnetized bypasses the equal-height rollers and then is wound on the storage drum, and the pressing wheel is attached to the rubber magnetic sheet of the storage drum by the weight of the pressing wheel. When the speed reducing motor drives the pressing wheel to rotate, the accommodating roller wound with the rubber magnetic sheet can be driven to rotate by virtue of friction force, and then the magnetized rubber magnetic sheet is pulled and wound on the accommodating roller. It will be appreciated that the linear velocity of the pinch roller at the point of contact with the take-up drum remains constant because the radius and speed of rotation of the pinch roller is constant. When the rubber magnetic sheet of coiling on accomodating the cylinder is more and more, the pinch roller is progressively raised, and the speed of accomodating cylinder tractive rubber magnetic sheet then keeps invariable, and then can ensure the uniform velocity of the rubber magnetic sheet on the transfer orbit and remove, makes the quality of magnetizing of rubber magnetic sheet remain stable.
Preferably, the upper sides of the contour rollers should be flush with the upper surface of the transfer rail so that the rubber magnet pieces on the transfer rail are always subjected to a horizontal traction force.
Example 2: the present embodiment is an improvement of the structure of the permanent magnet assembly in embodiment 1, specifically, as shown in fig. 4, a reinforcing magnet assembly 6 may be disposed below the conveying track, the reinforcing magnet assembly includes a plurality of U-shaped magnets 61 arranged side by side along the arrangement direction of the first and second permanent magnet pieces in the permanent magnet assembly, two upward ends of each U-shaped magnet correspond to the lower ends of the first and second permanent magnet pieces adjacent to the upper side, respectively, and the polarities of the two ends of each U-shaped magnet are opposite to the polarities of the lower ends of the first and second permanent magnet pieces corresponding to the upper side. That is to say, the end of the U-shaped magnet opposite to the first permanent magnet sheet body corresponding to the upper side is the S pole, and the end opposite to the second permanent magnet sheet body corresponding to the upper side is the N pole.
It is known that magnetic lines of force of an elongated permanent magnet are emitted from an N pole at one end, and then are wound around the entire circumference of the permanent magnet and returned to an S pole at the other end. Magnetic line of force that sends from first permanent magnetism lamellar body downside N utmost point passes behind the rubber magnetism magnetic sheet most and gets into in the S utmost point of below U-shaped magnet, and this magnetic line of force is sent out from the N utmost point of the U-shaped magnet other end after being strengthened in U-shaped magnet, and this ascending magnetic line of force gets back to the S utmost point of adjacent second permanent magnetism lamellar body downside after passing rubber magnetism magnetic sheet. That is, most of the magnetic lines of force emitted from the N pole at the lower side of the first permanent magnet sheet body are "sucked" and concentrated in the U-shaped magnet, and are further enhanced, thereby facilitating the concentration of the magnetic lines of force and reducing the existence of useless magnetic lines of force.
Example 3: in this embodiment, another improvement of the structure of the permanent magnet group in embodiment 1 is specifically, as shown in fig. 5, a magnetic conductive sheet 45 having a magnetic conductive function may be disposed between the adjacent first and second permanent magnet sheets, and of course, the length and width dimensions of the magnetic conductive sheet should be the same as those of the first and second permanent magnet sheets. That is to say, the permanent magnet group is arranged according to the order of the first permanent magnet sheet body, the magnetic conductive sheet body, the second permanent magnet sheet body, the magnetic conductive sheet body and the first permanent magnet sheet body … ….
After the magnetic line of force that the downside N utmost point of first permanent magnetism lamellar body sent upwards turned, in the S utmost point of two adjacent second permanent magnetism lamellar body belows around most entering, this magnetic line of force is sent out from the N utmost point of second permanent magnetism lamellar body upside after being strengthened in the second permanent magnetism lamellar body, wherein most magnetic line of force get into behind both sides turn around this second permanent magnetism lamellar body in the S utmost point of two adjacent first permanent magnetism lamellar body upsides, finally get back to the N utmost point of first permanent magnetism lamellar body downside again. The magnetic flux emitted from the N pole at the lower side of the first permanent magnet sheet body is partially fed into the magnetic conductive sheet body which is attached to the front and the back, and is emitted from the upper side of the magnetic conductive sheet body and then returns to the S pole at the upper side of the first permanent magnet sheet body, so that the magnetic flux forms a closed loop. Similarly, the magnetic line of force that the upside N of second permanent magnetism lamellar body sent is after turning downwards, and in the S utmost point of two adjacent first permanent magnetism lamellar body upsides around most entering, this magnetic line of force is sent out from the N utmost point of first permanent magnetism lamellar body downside after the reinforcing in first permanent magnetism lamellar body, wherein most magnetic line of force upwards turns back the entering two adjacent S utmost points of second permanent magnetism lamellar body downside around this first permanent magnetism lamellar body in, finally get back to the N utmost point of second permanent magnetism lamellar body upside again. The small part of the magnetic force line sent out from the upper N pole of the second permanent magnet sheet body enters the magnetic conductive sheet body which is attached to the front and the back, and the small part of the magnetic force line sent out from the lower side of the magnetic conductive sheet body returns to the lower S pole of the second permanent magnet sheet body.
Because the first permanent magnet sheet body and the second permanent magnet sheet body are separated by the magnetic conductive sheet body, only part of magnetic lines of force emitted from the lower N pole of the first permanent magnet sheet body are enhanced in the second permanent magnet sheet bodies adjacent in the front and the back, and the other part of the magnetic lines of force directly passes through the magnetic conductive sheet body and returns to the upper S pole of the first permanent magnet sheet body. Similarly, only part of magnetic lines of force emitted from the upper N pole of the second permanent magnet sheet body can enter the S poles at the upper ends of the front and rear adjacent first permanent magnet sheet bodies to be enhanced, and the other part of magnetic lines of force directly passes through the front and rear magnetic conductive sheet bodies to return to the lower S poles of the second permanent magnet sheet body. Therefore, when the thickness of the magnetic conductive sheet body is adjusted, the proportion of the enhanced magnetic force lines can be conveniently adjusted, so that the magnetic field intensity of the permanent magnet group for magnetizing is changed, and the magnetizing requirements of different products are met.
Example 4: the present embodiment is a third modification to the permanent magnet group structure in embodiment 1, specifically, as shown in fig. 6, a third permanent magnet sheet 43 may be disposed between the first permanent magnet sheet and the second permanent magnet sheet that are adjacent to each other in the conveying direction of the conveying track, a fourth permanent magnet sheet 44 may be disposed between the second permanent magnet sheet and the first permanent magnet sheet that are adjacent to each other in the conveying direction of the conveying track, and the outer dimensions of the third and fourth permanent magnet sheets are the same as the outer dimensions of the first and second permanent magnet sheets, where the side of the third permanent magnet sheet that is attached to the first permanent magnet sheet is an N pole, and the side of the fourth permanent magnet sheet that is attached to the first permanent magnet sheet is an N pole. That is to say, the permanent magnet group is arranged according to the order of first permanent magnet lamellar body, third permanent magnet lamellar body, second permanent magnet lamellar body, fourth permanent magnet lamellar body, first permanent magnet lamellar body … ….
Because the N pole is arranged at one side of the third and fourth permanent magnet sheet bodies which are arranged at the front and the rear sides of the first permanent magnet sheet body and are attached to the first permanent magnet sheet body, therefore, the magnetic force lines emitted from the N pole at the lower side of the first permanent magnet sheet body can not enter the third and fourth permanent magnet sheet bodies at the front and rear sides, the magnetic force line passes through the rubber magnetic sheet downwards, turns upwards and enters the S pole at the lower side of the front and the rear two separated second permanent magnet sheets, the magnetic force line entering the S pole is sent out from the N pole at the upper side of the second permanent magnet sheets after being enhanced for the first time in the second permanent magnet sheets, most of the enhanced magnetic lines of force enter the front and the back adjacent third and fourth permanent magnet sheets after turning 90 degrees, the magnetic lines of force enter the front and the back adjacent first permanent magnet sheets after being enhanced for the second time in the third and the fourth permanent magnet sheets, thereby make the magnetic force line strengthen for the third time, the magnetic force line after the reinforcing finally sends out from the N utmost point of first permanent-magnet lamellar body downside and magnetizes the rubber magnetism magnetic sheet below. That is to say, on the one hand, the magnetic force lines can be enhanced three times, so that the magnetic field intensity is remarkably improved, on the other hand, most of the magnetic force lines emitted from the N pole at the upper side of the second permanent magnet sheet body are sucked into the adjacent third and fourth permanent magnet sheet bodies, so that the magnetic field intensity at the lower side of the permanent magnet group is enhanced, the useless magnetic force lines at the upper side of the permanent magnet group are greatly reduced, the magnetic field intensity at the upper side of the permanent magnet group is effectively weakened, and the magnetizing effect and the utilization rate of the magnetic field can be effectively improved.
Claims (5)
1. The magnetizing device for the rubber magnetic sheets comprises a base, wherein a conveying track for horizontally conveying the rubber magnetic sheets and a permanent magnet group positioned above the conveying track are arranged on the base, and the magnetizing device is characterized in that an output roller for outputting the rubber magnetic sheets is arranged at the starting end of the conveying track, a storage roller for winding the rubber magnetic sheets which are magnetized is arranged at the tail end of the conveying track, the permanent magnet group comprises a plurality of first permanent magnet sheets and second permanent magnet sheets, the thickness directions of the first permanent magnet sheets and the second permanent magnet sheets are positioned in the horizontal plane, the first permanent magnet sheets and the second permanent magnet sheets are the same in appearance size, the first permanent magnet sheets and the second permanent magnet sheets are arranged at intervals, the lower side of the first permanent magnet sheets is an N pole, the upper side of the second permanent magnet sheets is an N pole, a pinch roller assembly is arranged beside the storage roller, and comprises a supporting seat, The swing arm is rotatably arranged on the supporting seat, a pinch roller driven by a speed reduction motor is arranged at the free end of the swing arm, and the pinch roller is attached to the containing roller.
2. The magnetizing device of rubber magnetic sheets as claimed in claim 1, wherein a reinforcing magnet assembly is disposed below the conveying rail, the reinforcing magnet assembly comprises a plurality of U-shaped magnets arranged side by side along the thickness direction of the first permanent magnet sheet and the second permanent magnet sheet, two ends of each U-shaped magnet respectively correspond to the lower ends of the first and second permanent magnet sheets adjacent to the upper side, and the polarities of the two ends of each U-shaped magnet are opposite to the polarities of the lower ends of the first and second permanent magnet sheets corresponding to the upper side.
3. The magnetizing device of rubber magnetic sheets as claimed in claim 1, wherein a magnetic sheet is disposed between the first and second adjacent permanent magnetic sheets, and the magnetic sheet has a same size as the first and second permanent magnetic sheets.
4. The magnetizing device of rubber magnetic sheets as claimed in claim 1, wherein a third permanent magnetic sheet is further disposed between the first and second permanent magnetic sheets adjacent to each other in the arrangement direction of the permanent magnet groups, a fourth permanent magnetic sheet is further disposed between the second and first permanent magnetic sheets adjacent to each other in the arrangement direction of the permanent magnet groups, the third and fourth permanent magnetic sheets have the same outer dimensions as the first and second permanent magnetic sheets, wherein the third permanent magnetic sheet is attached to the first permanent magnetic sheet in an N-pole manner, and the fourth permanent magnetic sheet is attached to the first permanent magnetic sheet in an N-pole manner.
5. A magnetizing apparatus for rubber magnetic sheets as claimed in claim 1, wherein rollers of equal height are provided beside the receiving drum, and the upper sides of the rollers of equal height are flush with the conveying rail.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810531763.7A CN108682532B (en) | 2018-05-29 | 2018-05-29 | Magnetizing device for rubber magnetic sheet |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810531763.7A CN108682532B (en) | 2018-05-29 | 2018-05-29 | Magnetizing device for rubber magnetic sheet |
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| CN108682532A CN108682532A (en) | 2018-10-19 |
| CN108682532B true CN108682532B (en) | 2020-08-11 |
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| CN206454782U (en) * | 2017-01-20 | 2017-09-01 | 武汉峰境磁选技术有限公司 | A kind of magnetic sheet component |
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| JPS60197147A (en) * | 1984-03-19 | 1985-10-05 | Pioneer Electronic Corp | Method of multipolarized-imagnetizing surface |
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| CN1435853A (en) * | 2002-01-31 | 2003-08-13 | 索尼公司 | Method for magnetizing magnetic sheet and magnetizing device |
| CN2750821Y (en) * | 2004-10-18 | 2006-01-11 | 李敏华 | Magnetic rubber strip and magnetizing arrangement therefor |
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| CN108682532A (en) | 2018-10-19 |
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Denomination of invention: A magnetizing device for rubber magnetic sheet Effective date of registration: 20220622 Granted publication date: 20200811 Pledgee: Dongyang Branch of China Construction Bank Co.,Ltd. Pledgor: ZHEJIANG DONGYANG DMEGC RARE EARTH MAGNET Co.,Ltd. Registration number: Y2022330001023 |