KR101664742B1 - Magnetorheological elastomer manufacturing system and magnetorheological elastomers manufacturing method - Google Patents

Abstract

The present invention relates to a storage tank, which is made of a transparent material through which light (UV) is permeable and which is connected to a pipe through which the fluid flows, A shaping water tank for receiving and containing the magnetorheic polymer flowing out of the storage tank and a magnetorheological polymer in the shaping water tank while being transferred to an orthogonal coordinate system in the X and Y axes by a conveying means located below the shaping water tank And a magnetic field for developing a magnetic field in the shaping water tank. The lower surface of the magnetic field is disposed to face the magnetorheological polymer accommodated in the shaping water tank, A molding plate on which the magnetorheological elastomer cured by the curing means is molded; A lifting means connected to the upper end of the shaping plate and selectively lifting the shaping plate gradually in accordance with progress of the work of the hardening means and a lifting means connected electrically to the storage tank, And a controller for controlling the conveyance of the curing unit based on the calculated processing route for each layer and controlling the elevation height of the shaping plate, A magnetorheological elastomer manufacturing system and a system for manufacturing magnetorheological elastomers having various shapes without being influenced by shape, thickness and size by printing a magnetorheological polymer mixed with a photocurable resin and magnetic particles in a three-dimensional printing system The present invention provides a method for manufacturing a magnetorheological elastomer using the same.

Description

TECHNICAL FIELD [0001] The present invention relates to a magnetorheological elastomer manufacturing system and a magnetorheological elastomer manufacturing method,

The present invention relates to a method of printing a magnetorheological polymer mixed with a photocurable resin and magnetic particles (particles responsive to a magnetic field) by a three-dimensional printing method and simultaneously developing and curing the magnetic field, The present invention relates to a magnetorheological elastomer manufacturing system capable of manufacturing magnetorheic elastomers of various shapes, and to a method of manufacturing a magnetorheological elastomer using the system.

Smart materials have been actively researched until recently because intelligent materials whose rheological properties are changed by these external conditions have been actively studied since they can exhibit characteristics suitable for various applications by properly controlling external conditions.

Particularly, a substance whose rheological properties are changed by a magnetic field is called a magneto-rheological material, and it is mainly composed of a mixture of non-magnetizable particles and magnetizable particles.

These magnetorheological materials can be classified according to the kind of the nonmagnetic material used as the base material, such as MR fluid (MR fluid) and solid elastomer (MR Elastomer, MRE) such as rubber, And the like.

The magnetorheological fluid is a material in which the particles capable of having a polarity by a magnetic field are mixed with the viscous fluid. The particles are irregularly distributed in the viscous fluid, but the particles are arranged in a chain shape according to the direction of the external magnetic field, do.

Using these properties, magnetorheological fluid has been applied to brakes, clutches, dampers, and engine mounts. Currently, studies on vibration damping performance and tribological properties are actively underway.

Despite these characteristics, however, the magnetorheological fluid is not completely sealed, which may lead to environmental pollution due to leakage of the liquid, and the disadvantage of the deterioration of the performance of the magnetorheological device due to the residue of polar particles in the magnetorheological fluid .

Therefore, it has been developed as an alternative to complement the disadvantages of the above-mentioned magnetorheological fluid and utilize the inherent properties of MR (MR). It is a magnet elastomer (MR Elastomer) having solid properties, .

Magneto-Rheological Elastomer (MRE) is a solid that is made by adding particles capable of polarity by magnetic force in a polymer material such as natural rubber or silicone rubber, similar to a magnetorheological fluid. And has a characteristic capable of determining the chain forming direction of the subject particles.

In order to manufacture the above-mentioned magnetorheic elastomer, a method of mixing a polymer capable of elastically deforming and a magnetoresistive material is disclosed in Japanese Patent Laid-Open No. 10-2012-0019651 (Mar. 07, 2012) Injecting the mixed material into a molding mold; And curing the mixed material in an environment in which a magnetic field or an electromagnetic field is applied to the magnetically rheological elastomer (MRE).

However, in the case of using a molding mold as described above, there is a problem in that a forming mold needs to be preformed. When the thermosetting resin is included in the polymer as shown in Fig. 1, And it was impossible to produce a complicated shape due to the limited size and shape that can be produced due to the limit of heat conduction depending on the thickness of the molding.

When the photo-curing resin is included in the polymer, the light source transmittance is inversely proportional to the thickness of the polymer, which limits the production time and size.

The present invention relates to a method of manufacturing a magnetic recording medium in which a magnetorheological polymer mixed with a photocurable resin and magnetic particles is accommodated in a molding water tank at a specified water level and an assembling plate rising according to the degree of molding by layer is interposed on the surface of the magnetorheological polymer, The magnetorheological fluid is irradiated with ultraviolet light through the lower part of the molding water tank while developing a magnetic field in the mold, so that the magnetorheological elastomer is formed into a rectangular coordinate system by layer on the bottom surface of the molding plate. Therefore, It is an object of the present invention to provide a magnetorheic elastomer manufacturing system and a magnetorheological elastomer manufacturing method capable of manufacturing an elastomer.

The magnetorheic elastomer manufacturing system according to the present invention comprises a storage tank for selectively flowing out the magnetorheic polymer by stirring with a stirring means provided therein and a transparent material through which light is transmitted, A shaping water tank for receiving and containing the magnetorheic polymer flowing out from the storage tank and a transporting means disposed below the shaping water tank for transporting the water to the Cartesian coordinate system of the X axis and the Y axis, And a magnetic field for spreading a magnetic field on the upper surface of the shaping water tank. The lower surface of the magnetic field is arranged to face the magnetorheological polymer accommodated in the shaping water tank, A molding plate on which a magnetorheological elastomer cured by the curing means is formed through a lower face of the polymer; A lifting means connected to the upper end of the shaping plate and selectively lifting the shaping plate gradually in accordance with progress of the work of the hardening means and a lifting means connected electrically to the storage tank, And a control unit for controlling the elevation of the shaping plate by controlling the conveyance of the curing unit on the basis of the calculated processing route for each layer.

The curing means according to the present invention includes a magnetic member for moving a magnetic field to the shaping water tank in correspondence with the magnetic field while moving in a rectangular coordinate system corresponding to the machining path by the conveying means at a lower portion of the shaping water tank, And a UV lamp disposed at the center of the member and partially curing the magnetorheological polymer contained in the molding water tank by partially irradiating ultraviolet rays through the lower portion of the molding water tank.

The curing means according to the present invention may include a magnetic member which forms a through hole at the center and which is fixed to a lower portion of the molding water tank and develops a magnetic field in the molding water tank in correspondence with the magnetic field, A UV lamp which partially irradiates ultraviolet rays to partly cure the magnetorheological polymer contained in the molding water tank; and a UV lamp which is disposed under the through hole of the magnetic member and irradiates the ultraviolet light irradiated from the UV lamp, And reflects the light to the lower portion of the molding water tank.

The method of manufacturing a magnetorheic elastomer according to the present invention comprises the steps of: a) providing a system for manufacturing a magnetorheic elastomer; b) dividing the externally applied three-dimensional modeling by layer by the controller, And (c) a magnetorheological polymer stored in a storage tank is supplied to the molding water tank, and guiding passage hardening means of the conveying means is transferred to the orthogonal coordinate system of the X-axis and the Y-axis based on the layer- (D) raising the molding plate by elevating means when a layer of the layer of magnetorheic elastomer is printed on the bottom side of the shaping plate, and (e) ) The step (c) and the step (d) are successively repeated to form a three-dimensional object to be printed by successively layering the layer layers All.

The magnetorheic elastomer manufacturing system and the magnetorheological elastomer manufacturing method according to the present invention have the following effects.

First, a magnetorheological polymer mixed with a photocurable resin and a magnetic particle is accommodated in a molding water tank at the designated water level, and a molding plate rising according to the degree of hardening by layer is interposed on the surface of the magnetorheological polymer, Since the magnetorheological elastomer is formed on the bottom surface of the molding plate in a rectangular coordinate system by irradiating ultraviolet light through the lower part of the molding water tank while developing the magnetic field, various types of magnetorheological elastomers Can be produced.

Second, the storage tank in which the magnetorheological polymer is stored contains agitating means for agitating the photocurable resin and the magnetic particles all the time, so that the distribution of the magnetic particles is not biased to either side, and the produced magnetorheic elastomer is not biased toward either side It has the effect that the uniform function is exercised.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a view showing the production of a magnetorheic elastomer using a conventional thermosetting resin. FIG.
2 is a view showing an example of a magnetorheological elastomer manufacturing system according to an embodiment of the present invention.
3 is an exemplary view showing a magnetorheological elastomer manufacturing system according to another embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, terms and words used in the present specification and claims should not be construed as limited to ordinary or dictionary terms, and the inventor should appropriately interpret the concepts of the terms appropriately The present invention should be construed in accordance with the meaning and concept consistent with the technical idea of the present invention.

Therefore, the embodiments described in the present specification and the configurations shown in the drawings are merely the most preferred embodiments of the present invention, and not all of the technical ideas of the present invention are described. Therefore, at the time of the present application, It should be understood that variations can be made.

The present invention relates to a method of printing a magnetorheological polymer mixed with a photocurable resin and magnetic particles (particles responsive to a magnetic field) by a three-dimensional printing method and simultaneously developing and curing the magnetic field, The present invention relates to a magnetorheological elastomer manufacturing system capable of manufacturing magnetorheic elastomers having various shapes and a method of manufacturing a magnetorheological elastomer using the system, and will be described in more detail with reference to the drawings.

Firstly, the magnetorheic elastomer is arranged in an instant chain structure when the magnetic field is influenced by the magnetic particles (particles that react to the magnetic field) normally contained in the magnetorheological elastomer, Of the elastic body.

A magnetorheological elastomer manufacturing system according to the present invention includes a main body in which light is not transmitted, and a storage tank 10, a molding water tank 20, a curing unit 40, a molding plate 50, Referring to FIGS. 2 and 3, the storage tank 10 selectively flows into the molding water tank 20 while receiving the magnetorheological polymer mixed with the photo-curable resin and the magnetic particles.

In this case, the stirring tank 11 is provided in the storage tank 10 to continuously stir the magnetorheological polymer stored in the storage tank 10, wherein the magnetic particles (particles responsive to the magnetic field) Is a metallic particle that does not go to the bottom due to its own weight and must be continuously agitated to achieve even distribution of the magnetic particles.

The molding water tank 20 is preferably made of a transparent material through which light is transmitted and is connected to the storage tank 10 through a pipe through which the fluid flows, Polymer is received and accepted at designated water level.

At this time, the water level of the magnetorheological polymer is determined by the height of the pipe connecting the molding water tank 20 and the storage tank 10, and the shape of the molding water tank 20 is rectangular, but not limited thereto, .

The curing unit 40 is disposed below the molding water tank 20. The curing unit 40 is transported to the Cartesian coordinate system of the X axis and the Y axis by the transfer unit 30, To cure the magnetorheological polymer contained therein.

At this time, the conveying means 20 can be implemented with an X-axis and Y-axis orthogonal coordinate system in various ways like a typical 3d printer. For example, the conveying means 20 may include a plurality of conveying screws and a servo motor Wherein a pair of conveying screws arranged at right angles to the molding water tank 20 are fixed at both ends thereof to form an X axis and a Y axis and at a point where a pair of conveying screws arranged at right angles to each other are superimposed, (40), and the curing means (40) selectively moves along the X axis or the Y axis as the pair of feed screws selectively rotate.

The present invention is not limited to this, and a timing belt or the like may be applied to the conveying means 20 instead of the conveying screw.

The curing unit 40 includes a UV lamp 41. The UV lamp 41 partially irradiates ultraviolet rays to the magnetorheological polymer contained in the molding water tank 20 to generate a UV A magnetic member 42 is provided along the periphery of the UV lamp 41 around the UV lamp 41 so that the magnetic field 51 corresponds to the magnetic field 51, So that a magnetic field (or an electric field) is developed in the molding water tank 20.

The magnetic field 51 is provided on the upper surface of the shaping plate 50. The shaping plate 50 is provided with a magnetic field 51 for spreading a magnetic field on the upper surface of the shaping plate 50, Is disposed inside the molding water tank 20 so as to be brought into contact with the water surface of the magnetorheological polymer so that the magnetorheological polymer is cured on the lower surface of the molding plate 50 to form a magnetorheological elastomer.

In addition, the magnetic field 51 may be composed of an electromagnet magnetized by a power source as described above, but it is not limited to this, and it may be constituted by a permanent magnet having a constant irritancy.

When the magnetic field of the curing means 40 and the magnetic field 51 of the shaping plate 50 correspond to each other and a magnetic field develops in the molding water tank 20, The magnetic particles contained in the magnetorheological polymer are aligned in a chain structure and the magnetic particles are aligned in a chain structure, the curing unit 40 moves from the lower part of the molding water tank 20 to the orthogonal coordinate system, When the UV lamp 41 of the mold 40 irradiates ultraviolet rays to the magnetorheological polymer corresponding to the working path, the magnetorheological polymer is partially cured along the working path so that the magnetorheological elastomer is formed in three dimensions.

The upper end of the shaping plate 50 is connected to the elevating means 52. The elevating means 52 selectively drives the shaping plate 50 according to the progress of the shaping process for each layer.

Therefore, when the hardening means 40 completes the molding for each layer in a state where the molding plate 50 is located in the molding water tank 20, the molding plate 50 is moved to the corresponding height And the molding plate 50 is partially cured at a position where the shaping plate 50 is raised again, so that a plurality of layers are laminated to each other to form a magnetorheological elastomer.

At this time, the rising height of the shaping plate 50 is equal to the height of the layer formed on the bottom surface of the shaping plate 50.

The hardening means 40 according to the present invention may be embodied as another embodiment of the present invention. More specifically, a magnetic member 42 is fixedly disposed on a lower portion of the molding water tank 20, A magnetic field is developed in the molding water tank 20.

At this time, a through hole is formed in the center of the magnetic member 42, and a slanting mirror 43 is provided below the through hole of the magnetic member 42, and a UV The ultraviolet light irradiated from the lamp 41 is reflected by the reflecting mirror 43 and is partially irradiated to the magnetorheological polymer in the molding water tank 20 through the through hole of the magnetic member 42 so that the magnetorheological polymer is partially .

Here, the angle of the reflector 43 is selectively adjusted by the controller 60 according to the machining path so that the reflection angle of the ultraviolet ray can be changed within the radius of the through hole of the magnetic member 42.

The storage tank 10, the conveying means 30, the curing means 40 and the elevating means 52 are electrically connected to the controller 60 so as to exchange power and control signals. Dimensional modeling that is applied from the outside is divided into layers and then the processing routes for each layer are calculated to control the feeding of the curing means 40 on the basis of the calculated processing route for each layer, Thereby controlling the elevation height.

Hereinafter, a method for manufacturing a magnetorheic elastomer according to the present invention will be described.

First, in step (a), a magnetorheological elastomer manufacturing system is provided.

The magnetorheological elastomer manufacturing system provided at this time is the magnetorheological elastomer manufacturing system described above, and thus a detailed description thereof will be omitted.

Then, in step (b), the control unit 60 divides the 3D-modeling applied by the outside into layers, and then calculates a processing route for each layer.

At this time, the controller 60 receives the information about the three-dimensional modeling as a three-dimensional modeling-related program file, divides the applied three-dimensional modeling into layers, and calculates the processing paths for each of the divided layers.

Next, in step (c), the layer layer of the magnetorheic elastomer is printed on the basis of the processing route for each layer calculated by the controller 60.

At this time, the magnetorheological polymer stored in the storage tank 10 is supplied to the molding water tank 20, and the guide path hardening means 40 of the conveying means 30 is guided to the X axis , And the layer of the layer is printed on the bottom surface of the shaping plate 50 by partially curing the magnetorheological polymer as it is transferred to the Cartesian coordinate system of the Y axis.

Next, in step (d), when the layer layer of the magnetorheic elastomer is printed on the lower surface of the shaping plate 50, the shaping plate 50 is raised to the lifting unit 52.

At this time, the shaping plate 50 is gradually raised according to the progress of the shaping by each layer. When the shaping plate 50 is completed, the shaping plate 50 is raised to a corresponding height by driving the elevating means 52, At the position where the plate 50 is raised, the magnetorheological polymer is partially cured, and the magnetorheological elastomer is formed by connecting the plurality of layers to each other.

The rising height of the shaping plate 50 is equal to the height of the layer of the magnetorheological elastomer formed on the bottom surface of the shaping plate 50.

Next, in step (e), the step (c) and the step (d) are repeatedly performed to form a three-dimensional object to be printed (magnetrubular elastomer to be printed)

When the final layer molding is completed, the elevating means raises the molding plate to the uppermost position, and allows the magnetorheic elastomer molded in the molding plate to be taken out.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

10: Storage tank
11: stirring means
20: Plastic water tank
30: conveying means
40: Curing means
41: UV lamp
42: Magnetic member
43: reflector
50: plastic plate
51: Magnetic field
52:
60:

Claims (4)

A storage tank for selectively discharging the magnetorheological polymer while agitating by means of stirring means provided therein;
A molding water tank which is made of a transparent material through which light is transmitted and which is connected to the storage tank through a pipe through which the fluid flows to receive and receive the magnetorheological polymer discharged from the storage tank;
Curing means for curing the magnetorheological polymer in the shaping water tank while being transferred to an orthogonal coordinate system of X-axis and Y-axis by a transfer means located below the shaping water tank;
And a magnetic field for developing a magnetic field in the shaping water tank is provided on the upper surface of the molding water tank. The lower surface of the magnetic field is arranged to face the magnetorheological polymer accommodated in the molding water tank, A molding plate on which a magnetorheological elastomer cured by molding is formed;
Elevating means connected to the upper end of the shaping plate to selectively raise the shaping plate in accordance with progress of the work of the curing means;
Dimensional modeling, which is electrically connected to the storage tank, the conveying means, the curing means, and the elevating means, and divides the three-dimensional modeling applied by the outside into layers, calculates a processing route for each layer, And a control unit for controlling the conveyance of the means and the elevation height of the shaping plate.
The method according to claim 1,
The curing means
A magnetic member for moving a magnetic field in the shaping water tank in correspondence with the magnetic field while moving to a rectangular coordinate system corresponding to the machining path by a conveying means at a lower portion of the shaping water tank;
And a UV lamp disposed at the center of the magnetic member and partially curing the magnetorheological polymer contained in the molding water tank by partially irradiating ultraviolet rays through the lower portion of the molding water tank.
The method according to claim 1,
The curing means
A magnetic member which forms a through hole at the center and which is fixed to a lower portion of the molding water tank and develops a magnetic field in the molding water tank in correspondence with the magnetic field;
A UV lamp partially irradiating ultraviolet rays from the lower part of the molding water tank to partially cure the magnetorheological polymer contained in the molding water bath;
And a reflector disposed under the through hole of the magnetic member and reflecting an ultraviolet ray irradiated from the UV lamp to a lower portion of the molding water tank by changing an irradiation angle along a processing path.
a) providing a magnetorheic elastomer manufacturing system according to claim 1;
(b) dividing the externally applied three-dimensional modeling by layer by the control unit, and then calculating a processing route for each layer;
(c) a magnetorheological polymer stored in the storage tank is supplied to the molding water tank, and the guiding path hardening means of the conveying means is transferred to the orthogonal coordinate system of the X axis and the Y axis on the basis of the layer- And printing the layer of the magnetorheic elastomer on the bottom side of the shaping plate;
(d) when the layer of the magnetorheic elastomer is printed on the bottom surface of the shaping plate, the shaping plate is lifted by the lifting means; And
(e) continuously repeating the steps (c) and (d) to continuously layer the layer layers to form a three-dimensional object to be printed.

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