CN113687713B - A texture rendering device and its manufacturing method - Google Patents

Abstract

The invention provides a texture presenting device and a manufacturing method thereof, relating to the technical field of tactile feedback devices; the texture presentation device comprises a flexible membrane, a magnetic unit and a membrane bracket; the flexible film has opposed first and second surfaces; a plurality of magnetic units are connected to the first surface; the membrane support is provided with a plurality of first through holes, and a plurality of magnetic units are inserted in the first through holes in a one-to-one correspondence mode. The invention can form concave or convex on the surface of the flexible film by utilizing the movement of the magnetic unit under the action of the driving magnetic field, so as to form uneven surface textures on the surface of the flexible film, and the flexibility of the surface layer of the texture presenting device can be realized and flexible textures are presented due to the deformable characteristics of the flexible film and the magnetic unit.

Description

A texture rendering device and its manufacturing method

technical field

The present invention relates to the technical field of tactile feedback devices, in particular to a texture rendering device and a manufacturing method thereof.

Background technique

Texture refers to the uneven grooves on the surface of an object. For the reproduction of millimeter-scale texture, it is usually realized by changing the surface topography of the texture rendering device. Existing texture display devices mostly use rigid materials as the presentation structure, that is, under the action of a driving magnetic field, the rigid material moves upward to generate certain protrusions, and the rigid protrusions at different positions form an uneven surface, thereby forming a texture.

However, since existing texture presentation devices use rigid materials as presentation units, it is difficult to present the texture of flexible materials, such as the texture of flexible materials such as sofas and leather bags.

Contents of the invention

The first object of the present invention is to provide a texture presentation device to solve the problem that the existing presentation devices are difficult to present the texture of flexible materials.

In order to solve the above problems, the present invention firstly provides a texture presentation device, comprising a flexible film, a magnetic unit and a film support; the flexible film has opposite first and second surfaces; a plurality of the magnetic units are arranged at intervals The first surface can drive the flexible membrane to produce depressions or protrusions under the action of a driving magnetic field; the membrane bracket is provided with a plurality of first through holes, and the flexible membrane is installed on the membrane bracket. The magnetic units are inserted in the plurality of first through holes in a one-to-one correspondence.

Further, the magnetic unit can be deformed under the action of external force, and/or the membrane support can be deformed under the action of external force.

Further, the magnetic unit is formed by mixing deformable material and magnetic powder.

Further, the material of the flexible membrane is the same as that of the deformable material.

Further, the membrane scaffold is formed by mixing a prepolymer and a crosslinking agent.

Further, the magnetic unit has a first end and a second end opposite to each other, the first end is connected to the first surface, and the second end extends out of the first through hole.

Further, it also includes a plurality of magnetic isolation units that maintain a stable state under the driving magnetic field, and the plurality of magnetic isolation units are connected to the first surface at intervals, the membrane bracket is provided with a plurality of second through holes, and a plurality of The magnetic isolation units are inserted into the plurality of second through holes in a one-to-one correspondence.

In addition, the second object of the present invention is to provide a method for manufacturing a texture rendering device, which includes the following steps:

forming the magnetic unit, adding the first raw material into the first mold for curing to form a plurality of magnetic units arranged at intervals, and the magnetic units can be deformed under the action of external force;

Array forming, coating the film material on the magnetic unit, the film material is cured and formed to form a flexible film connected to the magnetic unit, and the magnetic unit can drive the flexible film to produce depressions under the action of a driving magnetic field or raised;

The support is formed by adding the second raw material into the second mold for curing to form the film support, or using the second raw material to form the film support by 3D printing. The formed film support has a plurality of first through holes. Each of the magnetic units and the first through holes can be plugged and fitted in one-to-one correspondence.

Further, the step of forming the magnetic unit includes:

mixing the first material, stirring and mixing the deformable material and the magnetic powder to form the first raw material;

The first vacuum treatment, the first raw material is subjected to vacuum degassing treatment;

The first material is poured, and the first raw material after vacuum degassing treatment is injected into the first mold by using an injection device.

Further, the stent forming step includes:

mixing the second material, mixing the prepolymer and the crosslinking agent in a preset ratio to form the second raw material;

The second vacuum treatment, the second raw material is subjected to vacuum degassing treatment;

Pouring the second material, pouring the second raw material after the vacuum degassing treatment into the first mold;

heating and curing, forming the membrane support after heating and curing the second raw material after the vacuum degassing treatment;

Demoulding, taking out the molded membrane support from the second mold.

According to the texture rendering device and its manufacturing method provided by the present invention, the rigid driver is replaced by a deformable magnetic unit, and the movement of the magnetic unit under the action of the driving magnetic field can form depressions on the surface of the flexible film, and then form unevenness on the surface of the flexible film. Surface texture, and due to the deformable characteristics of the flexible film and the magnetic unit, the flexibility of the surface layer of the texture presentation device can be realized, and a flexible texture can be presented; in addition, thanks to the miniaturization of the magnetic unit, the texture presentation can be improved. resolution, thereby improving the rendering effect of refinement.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only It is an embodiment of the present invention, and those skilled in the art can also obtain other drawings according to the provided drawings without creative work.

FIG. 1 is a schematic structural diagram of a texture presentation device provided by an embodiment of the present invention;

Fig. 2 is a schematic structural diagram of the texture rendering device provided by the embodiment of the present invention during the assembly process;

Fig. 3 is a schematic structural diagram of a magnetic unit provided by an embodiment of the present invention in a normal state;

4 is a schematic structural diagram of a magnetic unit provided by an embodiment of the present invention under the action of a driving magnetic field;

FIG. 5 is a flow chart of a method for manufacturing a texture rendering device according to an embodiment of the present invention;

Fig. 6 is a schematic diagram of the mixing steps of magnetic powder and silica gel in the manufacturing method of the texture rendering device provided by the embodiment of the present invention;

Fig. 7 is a schematic diagram of the magnetic unit forming step of the manufacturing method of the texture rendering device provided by the embodiment of the present invention;

Fig. 8 is a schematic diagram of the array forming steps of the manufacturing method of the texture rendering device provided by the embodiment of the present invention;

Fig. 9 is a schematic diagram of the magnetizing step of the manufacturing method of the texture rendering device provided by the embodiment of the present invention;

Fig. 10 is a schematic diagram of the bracket forming step of the manufacturing method of the texture rendering device provided by the embodiment of the present invention;

Fig. 11 is a schematic diagram of the demoulding of the film support in the manufacturing method of the texture rendering device provided by the embodiment of the present invention;

Fig. 12 is a schematic diagram of a texture pattern presented by a texture presentation device according to an embodiment of the present invention.

Explanation of reference signs:

100-flexible membrane; 110-first surface; 120-second surface; 200-magnetic unit; 210-first end; 220-second end; 300-film support; 310-first through hole; 400-driving magnetic field ; 500-magnetic isolation unit; 600-first raw material; 700-first mold; 800-second raw material; 900-second mold; 1000-magnetizing magnetic field.

Detailed ways

In order to make the above objects, features and advantages of the present invention more comprehensible, specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

Touch is one of the most important sensory functions of human perception, which not only endows us with the ability to interact with the physical world, but also greatly enriches our daily life, playing an important role in a wide range of applications in robotics, wearable devices, healthcare, etc. effect. In the real world, human beings mainly perceive tactile information through the texture of the surface of objects, so it is easy to distinguish a wide variety of fabrics, appreciate delicate sculptures, and read books in Braille. As a typical tactile feedback device, the texture display device plays an irreplaceable role in the interaction between the blind and the outside world, and the perception of product texture in virtual shopping. However, it is difficult for the drivers of existing texture rendering devices to meet the requirements for texture rendering of flexible materials. In addition, the raised part of the texture rendering device needs to resist the positive pressure during the human hand interaction process. The supporting force of the existing texture rendering device is provided by the driver. If the supporting force provided by the driver is small, the raised driver will be blocked during the interaction process. The texture becomes flat when pressed by the human hand, that is, the texture disappears. In order to provide enough support to resist the positive pressure of the human hand, the driver size of the existing texture rendering device is large, resulting in low resolution and difficult to present finer textures.

In view of this, this embodiment provides a texture rendering device, aiming to solve the above technical problems by improving the driving material and driving method.

As shown in Figure 1 and Figure 2, a texture rendering device of this embodiment includes a flexible film 100, a magnetic unit 200 and a film support 300, wherein the flexible film 100 and the magnetic unit 200 of this embodiment are connected as one, Therefore, the two can also be regarded as a whole, which is called a presentation array. The flexible membrane 100 of this embodiment has a first surface 110 (the lower surface in FIG. 2 ) and a second surface 120 (the upper surface in FIG. 2 ), the magnetic unit 200 of this embodiment is connected to the first surface 110, The specific connection method is given in the following manufacturing method.

The magnetic unit 200 of this embodiment can be deformed under the action of external force, but different from the flexible deformation mode of the flexible film 100, the specific deformation of the magnetic unit 200 of this embodiment is small, and the magnetic unit 200 of this embodiment can be driven Under the action of the magnetic field 400, the flexible film 100 produces depressions or protrusions. The depressions and protrusions here are relative terms. For example, as shown in FIG. 4, under the action of the driving magnetic field 400, the magnetic unit 200 of this embodiment moves downward, The first surface 110 is convex downward and the second surface 120 is concave downward. Similarly, the magnetic unit 200 can also be moved upward so that the first surface 110 is concave upward and the second surface 120 is convex upward. Due to the present embodiment The flexible membrane 100 is supported by the membrane support 300, and the membrane support 300 cannot provide support when the first surface 110 is concave upward and the second surface 120 is convex upward, so this embodiment uses the magnetic unit 200 under the action of the driving magnetic field 400 This method of moving downwards further makes the second surface 120 form a depression, and a protrusion is formed around the second surface 120 depression. At this time, the protrusion is supported by the membrane support 300 of this embodiment, that is, the texture rendering device of this embodiment adopts The membrane support 300 is used to replace the original driver for presenting support.

In this embodiment, the flexible film 100 and the magnetic unit 200 are connected to form an array and placed on the film support 300. The film support 300 is provided with a plurality of first through holes 310, and a plurality of magnetic units 200 are inserted in a plurality of first through holes one by one. Inside a through hole 310 . Because the magnetism of the magnetic unit 200 is weak, in order to produce a certain depth of depression, the required external driving magnetic field 400 is relatively strong, and the ordinary small coil driving magnetic field 400 is weak, so it is difficult to realize the downward depression of the magnetic powder unit. Therefore, in this embodiment The excitation driving magnetic field 400 used is generated by a large-scale electromagnetic coil or a large-scale permanent magnet.

For the existing texture rendering device, the rigid permanent magnet moves upward under the action of the driving magnetic field 400 to produce certain protrusions, and the rigid permanent magnets at different positions produce protrusions, which form uneven surface textures. For example, if the deformable magnetic unit 200 is used instead of the rigid driver, the movement of the magnetic unit 200 under the action of the driving magnetic field 400 can form a depression on the surface of the flexible film 100, and then form an uneven surface texture on the surface of the flexible film 100, and because the flexible film 100 has deformable properties, so it can realize the flexibility of the surface layer of the texture presentation device and present flexible textures.

In addition, since the texture rendering device uses the film support 300 to replace the original driver for rendering support, the magnetic unit 200 can be processed to a radial size of less than 1mm to improve the resolution of texture rendering, and the magnetic unit 200 of this embodiment With deformation characteristics, this deformable material can facilitate miniaturization processing, that is, compared with rigid materials, the magnetic unit 200 of this embodiment can and is easily made smaller, thereby improving the resolution of texture presentation, and finally presenting The refinement of the effect.

As shown in FIG. 3 , in the state where there is no driving magnetic field 400 , the flexible film 100 of this embodiment does not deform, and the entire texture display device is in a flat state without texture patterns. As shown in Figure 4, under the action of the driving magnetic field 400, the magnetic unit 200 of this embodiment moves downward, thereby causing the flexible membrane 100 of this embodiment to sag. On the contrary, under the support of the membrane support 300, Parts of the flexible membrane 100 located on both sides of the magnetic unit 200 are in a convex state, thereby forming an uneven flexible texture. Human hands can press the protrusions on the second surface 120 of the flexible membrane 100 on both sides of the depression. At this time, the positive pressure of the human hand passes through The membrane support 300 implements support or offset. It should be noted that the direction of the arrow in the figure is the direction of human hand touch.

Of course, it is also possible that the magnetic unit 200 moves upward so that the flexible film 100 protrudes at the position facing the magnetic unit 200, but this structure cannot provide a stable supporting force because the magnetic unit 200 itself has certain deformation characteristics. In other words, flexibility, when the magnetic unit 200 is used to make the flexible film 100 present a convex direction to form texture, in the process of presenting the texture, the positive pressure of the human hand causes the magnetic unit 200 to bend and deform; in addition, due to the elasticity of the magnetic unit 200 compared Due to the weak rigidity of the permanent magnet, the upward supporting force generated under the action of the external driving magnetic field 400 is relatively small, and cannot provide stable support.

Therefore, in order to solve the problem that the supporting force is small and the protrusion of the magnetic unit 200 is easy to deform, this embodiment utilizes the downward movement of the magnetic unit 200 to make the first surface 110 of the flexible film 100 bulge and the second surface 120 is concave, and then use the concave The surrounding second surface 120 is raised, and the support force at the protrusion is provided by the membrane support 300, which solves the problem of insufficient support force.

As shown in Figure 6, the magnetic unit 200 of this embodiment is formed by mixing deformable material and magnetic powder. It only needs to be injected into the mold with a syringe or the like to be cured. By adopting such a method of mixing the materials and then curing and forming, the size of the magnetic unit 200 can be processed to be much smaller than that of the existing driver.

In order to achieve a good combination of the flexible membrane 100 and the magnetic unit 200, in this embodiment, the material and the deformable material used to make the flexible membrane 100 are selected as the same material or a material with similar properties. For example, the material of the flexible membrane 100 can also be silica gel. , the silica gel of the flexible film 100 and the silica gel of the magnetic unit 200 can be well attracted under the action of the same molecular force, thereby improving the connection strength between the flexible film 100 and the magnetic unit 200 .

As shown in accompanying drawings 3 and 4, the magnetic unit 200 of this embodiment has an opposite first end 210 (the upper end in the figure) and a second end 220 (the lower end in the figure), the first end 210 and the first The surfaces 110 are connected. In order to increase the magnetic permeability area of the magnetic unit 200 and facilitate the movement of the magnetic unit 200 of this embodiment under the action of the driving magnetic field 400, the second end 220 of this embodiment extends out of the first through hole 310. The location closer to the source of the driving magnetic field 400 can facilitate the generation of magnetic effects of mutual attraction or repulsion, thus facilitating the downward movement of the magnetic unit 200 of this embodiment.

In conjunction with accompanying drawings 3 and 4, in order to prevent the membrane support 300 from affecting the movement of the magnetic unit 200, in this embodiment the magnetic unit 200 and the sidewall of the first through hole 310 are designed to fit in a clearance, so as to avoid the magnetic unit 200 from moving. Sliding friction occurs with the side walls around the first through hole 310 during the movement.

In addition, in order to simulate the texture of materials with different rigidities (softness), this embodiment makes the membrane support 300 out of deformable materials. Polydimethylsiloxane (PDMS) is formed by mixing polymers and cross-linking agents. By adjusting the ratio of pre-polymers and cross-linking agents, membrane scaffolds 300 with different rigidities (softness) can be obtained. Wherein, the greater the proportion of the crosslinking agent in PDMS, the greater the rigidity and the lower the softness of the obtained membrane scaffold 300, the ratio range of the prepolymer and the crosslinking agent in this embodiment is preferably 5:1-20: 1. It can take into account the strength of the support and has good deformation ability. In addition, the membrane support 300 can also be processed by 3D printing and other methods. By printing consumables with different hardness, the membrane support 300 with different stiffness (softness) can be processed.

As shown in FIG. 12 , in order to produce different texture patterns, the presentation array of this embodiment also includes a plurality of magnetic isolation units 500 that maintain a stable state under the driving magnetic field 400. The magnetic isolation units 500 do not have magnetism. Correspondingly, the film The bracket 300 is provided with a plurality of second through holes (not shown in the figure), and a plurality of magnetic isolation units 500 are inserted into the plurality of second through holes correspondingly. In specific applications, the display array can be programmed, that is, during the preparation of the display array, the magnetic units 200 (filled black circles) are poured in different areas, and the magnetic isolation units 500 (unfilled black circles) are poured in other places. ), so it can produce a variety of different texture patterns, that is, the arrangement of filled black circles and unfilled black circles can be arranged and designed according to requirements to achieve the diversification of presentation groups. Of course, the magnetic isolation units 500 may not be provided, and the magnetic units 200 may be arranged at intervals directly, and effects of different texture patterns may also be produced.

As shown in Fig. 5, based on the above-mentioned texture rendering device, this embodiment provides a manufacturing method of such a texture rendering device, which includes the following steps:

The magnetic unit 200 is formed, and the first raw material 600 is added to the first mold 700 for curing to form a plurality of magnetic units 200 arranged at intervals, and the magnetic unit 200 can be deformed under the action of an external force;

Array forming, coating the film material on the magnetic unit 200, the film material is solidified and formed to form a flexible film 100 connected to the magnetic unit 200, and the magnetic unit 200 can drive the flexible film 100 to produce depressions or protrusions under the action of the driving magnetic field 400;

Stent molding, the second raw material 800 is added to the second mold 900 for curing to form the membrane support 300, or the second raw material 800 is used to form the membrane support 300 by 3D printing, and the formed membrane support 300 has a plurality of first through holes 310, The plurality of magnetic units 200 can be plugged and matched with the first through holes 310 one by one.

Further, the above-mentioned forming steps of the magnetic unit 200 include:

Mixing the first material, stirring and mixing the deformable material and the magnetic powder to form the first raw material 600;

The first vacuum treatment, the first raw material 600 is subjected to vacuum degassing treatment;

The first material is poured, and the first raw material 600 after vacuum defoaming treatment is injected into the first mold 700 by using an injection device.

Further, the above-mentioned stent forming steps include:

The second material is mixed, and the prepolymer and the crosslinking agent are mixed in a preset ratio to form the second raw material 800;

The second vacuum treatment, the second raw material 800 is subjected to vacuum degassing treatment;

The second material is poured, and the second raw material 800 after the vacuum degassing treatment is injected into the first mold 700 by an injection device;

Heating and curing, the second raw material 800 after the vacuum debubbling treatment is heated and cured for 5-6 hours in a temperature environment of 50-80°, and then the film support 300 is formed;

Demoulding, taking out the molded membrane support 300 from the second mold 900 .

Specifically, as shown in Figure 6, first, the silica gel and the magnetic powder are fully stirred and mixed in a certain proportion, and the mass ratio of the magnetic powder to the first raw material ranges from 20% to 70%, taking into account good deformation ability and magnetic permeability , there is silica gel in the container in the figure, and the magnetic powder can be added into the container through the tray and other structures in the figure, and then stirred by a stirring rod to obtain the first raw material 600, and then the first raw material 600 is vacuum-treated in the equipment to remove the second Air bubbles in a raw material 600 are removed, and the vacuumed first raw material 600 is loaded into the syringe.

Then, as shown in FIG. 7, the magnetic unit 200 is prepared. Specifically, the first raw material 600 is injected into the first mold 700 of 3D printing through a syringe, and the mixed magnetic powder and silica gel mixed material is waited for solidification, and the solidified first The raw material 600 forms individual magnetic powder units.

Then, as shown in accompanying drawing 8, when the first raw material 600 in the first mold 700 is solidified, some silica gel is mixed and vacuumed in the equipment, and the vacuumed silica gel is poured into the container in the figure until it solidifies. On the surface of the final first raw material 600, under the effect of the material properties of the silica gel itself, the cast flexible film 100 and the magnetic unit 200 will be automatically bonded to form an integrated body, forming an array. Wherein, the thickness of the flexible film 100 can be adjusted and controlled by the size of the mold. After the silicone on the surface is solidified again, the flexible film 100 and the magnetic unit 200 are released from the mold to obtain a flexible presentation array.

Since the magnetic powder particles in the display array are in a disordered state, all the magnetic powder particles do not have a unified magnetic pole. At this time, the flexible magnetic powder unit is in a non-magnetic state. In order to make each flexible magnetic powder unit in the display array obtain a certain magnetic pole, as shown in the figure As shown in 9, it is necessary to place the display in a magnetizing magnetic field 1000 (such as in a magnetizer) for magnetization. After magnetization, each magnetic unit 200 in the display array will have a certain degree of magnetism. Further, in order to obtain greater magnetism of the flexible magnetic powder unit, there are two ways of increasing the magnetizing magnetic field 1000 and increasing the content of magnetic powder in the first raw material 600 . The larger the external magnetizing magnetic field 1000 , the stronger the magnetism of the obtained magnetic unit 200 ; the higher the content of magnetic powder in the first raw material 600 , the stronger the magnetism of the obtained flexible magnetic powder unit.

In the mixed first raw material 600, each magnetic powder particle can be regarded as an individual micro-actuator. Thanks to this advantage, the size of the flexible magnetic powder unit can be designed according to the requirements by adjusting the size of the mold to improve the spatial resolution of the electromagnetically driven texture presentation device. For example, the diameter of the pouring hole of the first mold 700 is designed to be about 1mm, preferably 0.2-2.5mm, which is easy to process and can make the flexible film 100 present a relatively fine resolution, then by injecting the first raw material 600 into the mold, it can be A magnetic unit 200 with a diameter of about 1mm is obtained, and its resolution is much higher than the resolution of the current electromagnetic drive texture rendering device (limited by the size of the drive, the resolution of the existing texture rendering device is generally 2.5mm, 3mm, 3.5mm, etc.). The higher the spatial resolution of the texture presentation device, the finer the texture that the device can present, and the richer the types of textures that can be presented.

In order to reproduce the texture of materials with different rigidity (softness), the present invention proposes a preparation process of a membrane support 300 with variable rigidity, as shown in Figure 10, firstly, polydimethylsiloxane (PDMS) two The two components (prepolymer and crosslinking agent) are mixed in a certain ratio, and then put into the equipment for vacuum treatment to remove the air bubbles in PDMS. Subsequently, the PDMS with the bubbles removed is poured into the mold, and then the mold with PDMS is placed in a heating box for heating and curing. The heating temperature is 50-80°, and the heating time is 5-6h. Preferably, the heating temperature is selected as 60° , The heating time is 5 hours to provide a good curing molding effect. After the PDMS in the mold is solidified, take it out from the heating box and cool it down to room temperature, and then take out the solidified PDMS from the mold as shown in FIG. 11 to obtain a membrane support 300 . Finally, the presentation array is installed in the film support 300 , since the flexible film 100 of the presentation array is relatively thin, the rigidity (softness) of the presentation device is mainly provided by the film support 300 .

Although the present invention is disclosed above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, so the protection scope of the present invention should be based on the scope defined in the claims.

Finally, it should also be noted that in this text, relational terms such as first and second etc. are only used to distinguish one entity or operation from another, and do not necessarily require or imply that these entities or operations, any such actual relationship or order exists. Furthermore, the term "comprises", "comprises" or any other variation thereof is intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus comprising a set of elements includes not only those elements, but also includes elements not expressly listed. other elements of or also include elements inherent in such a process, method, article, or device. Without further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article or apparatus comprising said element.

Each embodiment in this specification is described in a progressive manner, each embodiment focuses on the difference from other embodiments, and the same and similar parts of each embodiment can be referred to each other.

The above description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the present invention will not be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (9)

1. A texture rendering device, characterized in that, comprising: a flexible membrane (100) having opposed first (110) and second (120) surfaces; A magnetic unit (200), a plurality of magnetic units (200) are arranged at intervals on the first surface (110), and the magnetic unit (200) can drive the flexible film (100) under the action of the driving magnetic field (400) ) produce depressions or protrusions; A membrane support (300), the membrane support (300) is provided with a plurality of first through holes (310), the flexible membrane (100) is installed on the membrane support (300), and a plurality of the magnetic units ( 200) being inserted into the plurality of first through holes (310) in one-to-one correspondence; It also includes a plurality of magnetic isolation units (500) that maintain a stable state under the driving magnetic field (400), the plurality of magnetic isolation units (500) are connected to the first surface (110) at intervals, and the membrane support (300 ) is provided with a plurality of second through holes, and a plurality of the magnetic isolation units (500) are inserted into the plurality of second through holes in one-to-one correspondence. 2. The texture presentation device according to claim 1, characterized in that, the magnetic unit (200) is deformable under the action of external force, and/or the membrane support (300) is deformable under the action of external force. 3. The texture presentation device according to claim 2, characterized in that, the magnetic unit (200) is formed by mixing deformable material and magnetic powder. 4. The texture rendering device according to Claim 3, characterized in that, the material of the flexible membrane (100) is the same as that of the deformable material. 5. The texture presentation device according to claim 2, characterized in that, the membrane support (300) is formed by mixing a prepolymer and a crosslinking agent. 6. The texture rendering device according to claim 1, characterized in that, the magnetic unit (200) has opposite first ends (210) and second ends (220), and the first ends (210) and The first surfaces (110) are connected, and the second end (220) extends out of the first through hole (310). 7. A method for manufacturing a texture rendering device, characterized in that it is used to manufacture the texture rendering device according to any one of claims 1-6, the manufacturing method comprising the following steps: The magnetic unit (200) is formed, and the first raw material (600) is added into the first mold (700) for curing to form a plurality of magnetic units (200) arranged at intervals, and the magnetic unit (200) can be deformed under the action of an external force; forming an array, coating a film material on the magnetic unit (200), and forming a flexible film (100) connected to the magnetic unit (200) after the film material is cured and formed, and the magnetic unit (200) can be Driving the flexible film (100) to produce depressions or protrusions under the action of the driving magnetic field (400); Stent forming, adding the second raw material (800) into the second mold (900) for curing to form the membrane support (300), or forming the membrane support (300) by using the second raw material (800) by 3D printing, forming The latter membrane support (300) has a plurality of first through holes (310), and the plurality of magnetic units (200) and the first through holes (310) can be plugged and matched one by one. 8. The method for manufacturing a texture presentation device according to claim 7, characterized in that the forming step of the magnetic unit (200) comprises: mixing the first material, stirring and mixing the deformable material and the magnetic powder to form the first raw material (600); The first vacuum treatment, performing vacuum debubbling treatment on the first raw material (600); The first material is poured, and the first raw material (600) after vacuum degassing treatment is injected into the first mold (700) by using an injection device. 9. The method for manufacturing a texture rendering device according to claim 7, wherein the step of forming the bracket comprises: The second material is mixed, and the prepolymer and the crosslinking agent are mixed in a preset ratio to form the second raw material (800); second vacuum treatment, performing vacuum debubbling treatment on the second raw material (800); Pouring the second material, pouring the second raw material (800) after the vacuum degassing treatment into the first mold (700); heating and curing, forming the membrane support (300) after heating and curing the second raw material (800) after the vacuum degassing treatment; Demoulding, taking the formed membrane support (300) out of the second mold (900).