TW201609451A - Liquid-solidified metal mesh and manufacturing method thereof - Google Patents

Abstract

The present invention provides a liquid-solidified metal mesh and a manufacturing method thereof. The method comprises the following steps: providing a mesh mold; preparing a high temperature heating furnace capable of precisely controlling the heating temperature; placing a pre-melted liquid metal alloy in the high temperature heating furnace to allow the liquid metal alloy to be heated through the high temperature heating furnace to a predetermined temperature; introducing the liquid metal alloy that has been heated to the predetermined temperature in the high temperature heating furnace to the mesh mold through an injection unit; and with the liquid metal alloy being molded in the mesh mold as a liquid-solidified metal mesh, removing the liquid-solidified metal mesh out of the mesh mold. The liquid-solidified metal mesh made by the above method has a mesh body, and the mesh body has a plurality of holes, which penetrate through the mesh body.

Description

Liquid metal mesh and manufacturing method thereof

The present invention relates to a structure and a manufacturing method of a metal mesh, and more particularly to a liquid metal mesh which is formed by using a liquid metal to form a netting and a manufacturing method thereof.

Screen printing is an important tool for screen printing, and it can also be said to be an important basis for screen printing. In addition to forming the pattern, the screen version also controls the amount of ink that can be transmitted during screen printing. Therefore, the structure of the screen version is very large for the precision of printing, the thickness of ink, and the amount of ink permeation. Impact.

The manufacturing method of the screen plate firstly fixes a mesh cloth to a frame by opening it through a certain tension. Next, the emulsion is coated on the mesh cloth and the photosensitive emulsion is subjected to chemical reaction of ultraviolet light to perform photosensitive plate making, so that the non-printed portion of the emulsion which is not blocked by the negative film is photohardened to block the mesh of the mesh. When the negative film blocks the printed portion of the ultraviolet light source, the emulsion is not chemically reacted, and is dissolved and hollowed out when it is in contact with water, thereby forming a pattern opening required for printing during development. When screen printing is performed, the operator can apply pressure by the doctor blade to scrape the ink, so that the ink is printed on the printed matter through the hollow mesh to achieve the printing purpose.

At present, the mesh cloth used for manufacturing the screen plate is commonly made of a Tedron mesh cloth, a nylon mesh cloth, a metal mesh cloth, etc., wherein the metal mesh cloth further includes a metal which is interlaced by a metal wire and a warp and weft. A wire mesh, an electroformed screen made of a nickel alloy, and a steel plate formed by laser cutting using steel.

The mesh fabric obtained by interlacing the metal wires with the warp and weft threads 91 and 92 is a metal mesh cloth which is more popular in the industry, as shown in the first figure. The process of such a mesh is relatively easy and the thickness of the mesh can be controlled by rolling, however, The mesh cloth will form a mesh knot 93 at the intersection of the warp and weft threads 91 and 92. Therefore, the screen plate made of such a mesh cloth has a short surface unevenness, and is easily displaced by the warp and weft when being scraped. The situation has occurred, which in turn affects the quality of screen printing.

The electroformed screen made of nickel alloy can overcome the above shortcomings of the warp and weft wire mesh because it does not have a mesh knot. However, it has the disadvantage of insufficient structural strength. When the wire diameter of the mesh cloth is required to be fine, it is easy to A situation occurs when there is insufficient tension and rupture. Further, although the steel plate made by laser cutting also has the advantage of not having a mesh, the structure of the screen is liable to have a residue, which causes a problem that the ink cannot be inked at the time of printing.

For the above reasons, one of the main objects of the present invention is to provide a method for producing a liquid metal mesh by injection molding using a liquid metal alloy, thereby producing an integrally formed and netted liquid metal mesh.

Another object of the present invention is to provide a method for producing a liquid metal mesh which can adjust the composition of the liquid metal alloy according to requirements, thereby forming a liquid metal mesh having different strength and toughness.

In order to achieve the foregoing objects, the present invention provides a method for fabricating a liquid metal mesh comprising the steps of: preparing a mesh mold; preparing a high temperature heating furnace capable of precisely controlling the heating temperature; and adding a premelted liquid metal alloy to the Heating the liquid metal alloy to a predetermined temperature through a high temperature heating furnace; introducing a liquid metal alloy heated to a predetermined temperature in the high temperature heating furnace into the mesh mold through an injection unit; and, waiting for the liquid metal After the alloy is formed into a liquid metal mesh in the mesh mold, the liquid metal mesh is released from the mesh mold. Wherein, the liquid metal mesh has a mesh body, and the mesh body has a plurality of holes penetrating the mesh body.

According to an embodiment of the invention, the liquid metal alloy comprises at least one of zirconium, copper, nickel, aluminum, titanium, cobalt, and a platinum alloy. In addition, one of chromium, iron, bismuth, carbon, boron, phosphorus, tungsten, and molybdenum alloys may be further added to the liquid metal alloy to adjust the ductility and resistance of the liquid metal mesh. Sex and resilience.

Another main object of the present invention is to provide a liquid metal mesh structure having an integrally formed structure and a netting-free property.

To achieve the foregoing objects, the present invention provides a liquid metal mesh structure comprising: a mesh body made of a liquid metal alloy, and the mesh body having a plurality of holes penetrating the mesh body.

According to an embodiment of the invention, the mesh body has a flat plane. Further, the mesh body may have a uniform thickness or may have at least a first thickness and a second thickness.

According to an embodiment of the invention, the holes of the liquid metal mesh may have a quadrangular, circular or polygonal shape.

According to an embodiment of the present invention, the holes of the liquid metal mesh may all have the same size, or the holes of the liquid metal mesh may include at least a plurality of first holes and a plurality of second holes, and the like. The first hole has a different size than the second holes.

According to an embodiment of the present invention, each of the two adjacent holes in the liquid metal mesh has a mesh routing diameter, and the mesh routing diameters of the liquid metal mesh all have the same width. Alternatively, the liquid metal mesh has at least two mesh widths of different widths.

S21‧‧‧Preparation steps

S22‧‧‧melting step

S23‧‧‧ injection steps

S24‧‧‧Molding steps

10‧‧‧Mesh mold

20‧‧‧High temperature heating furnace

21‧‧‧Injection unit

5‧‧‧Liquid metal mesh

51, 51a, 51b‧‧‧ mesh body

52‧‧‧ holes

52a, 52b, 52c‧‧ holes

52i, 52j, 52k‧‧ holes

52x, 52y‧‧‧ holes

6‧‧‧solidified layer

61‧‧‧ pattern opening

65a, 65b1, 65b2‧‧‧ printed patterns

91‧‧‧ warp

92‧‧‧Weft

93‧‧‧Net

LM‧‧‧Liquid metal alloy

H1, H2‧‧‧ thickness

W1, W2, W3‧‧‧ width

The first figure is a perspective view showing a conventional metal mesh woven by warp and weft; the second figure is a flow chart showing a method of manufacturing a liquid metal mesh according to a preferred embodiment of the present invention; A block diagram of a system for producing a liquid metal mesh according to a method of manufacturing a liquid metal mesh according to a preferred embodiment of the present invention; 4 is a perspective view showing a liquid metal mesh made by a method according to a preferred embodiment of the present invention; and FIGS. 5A-5B are side views showing liquid metal meshes having different thicknesses, respectively; 6A to 6C are top views showing liquid metal meshes having different hole shapes, respectively; and 7A to 7B are top views showing liquid metal meshes having different hole distribution patterns, respectively. .

The embodiments of the present invention will be described in more detail below with reference to the drawings and the <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt; </ RTI> <RTIgt;

The second drawing is a flow chart showing a method of manufacturing a liquid metal mesh according to a preferred embodiment of the present invention; and the third drawing is a block diagram showing a system for manufacturing a liquid metal mesh. As shown in the second and third figures, the method for fabricating the liquid metal mesh provided by the present invention mainly includes a preparation step S21, a melting step S22, an ejection step S23, and a molding step S24.

In the preparation step S21, first, a corresponding mesh mold 10 is prepared in accordance with the structure of the mesh to be manufactured, and at the same time, a high-temperature heating furnace 20 which can precisely control the heating temperature is prepared. Next, in the melting step S22, a pre-melted liquid metal alloy LM is added to the high-temperature heating furnace 20, and the liquid metal alloy LM is heated to a predetermined temperature through the high-temperature heating furnace 20. In the present invention, the liquid metal alloy LM used for the production of the mesh is mainly a liquid metal alloy containing an alloy of zirconium, copper, nickel, aluminum, titanium, cobalt, platinum or the like. According to the requirements for properties such as ductility, chemical resistance and toughness of the mesh, an alloy such as chromium, iron, bismuth, carbon, boron, phosphorus, tungsten or molybdenum may be added to prepare the liquid metal alloy LM.

After the high temperature heating furnace 20 heats the liquid metal alloy LM to a desired temperature, the liquid can be discharged through an injection unit 21 in the emission step S23. The metal alloy LM is introduced into the mesh mold 10. Finally, the molding step S24 is performed. After the liquid metal alloy LM is cooled and formed into a liquid metal mesh in the mesh mold 10, the liquid metal mesh is released from the mesh mold 10. The formed liquid metal mesh 5 is a metal flat net having a plurality of holes 52 penetrating the mesh main body 51, as shown in the fourth figure, the detailed structure of which will be described later. The liquid metal mesh manufactured by the above method can be subsequently formed into a metal screen or a composite screen by conventional steps such as drawing, coating, exposure, and development.

As shown in the fourth figure, the liquid metal mesh 5 produced according to the above method has a mesh main body 51, and the mesh main body 51 has a plurality of holes 52 penetrating the mesh main body 51. Since the liquid metal alloy is formed by injection molding when it is made into a mesh cloth, different mesh molds can be designed according to the requirements of the mesh structure, so that the degree of freedom of the mesh structure is compared with the conventional warp and weft network. The cloth is higher and its application range is wider. In addition, due to the characteristics of the liquid metal alloy itself, the mesh made of the liquid metal alloy has the advantages of high toughness, high hardness and high strength-to-weight ratio. And it also has excellent performance in terms of elasticity, wear resistance, corrosion resistance, etc., so its structure strength and durability are better than the conventional electroforming net and steel mesh. In addition, the low melting point characteristics of liquid metal alloys are also advantageous for the production process.

As shown in the fourth figure, the liquid metal mesh 5 made of liquid metal has an integrally formed mesh body 51, and the mesh itself has the characteristics of no netting, and there is no warp and weft in the printing of the screen. The problem of line displacement occurs. Preferably, the mesh body 51 of the liquid metal mesh has a flat plane. However, it may vary in thickness depending on the thickness, the distribution of the holes, and the width of the wire diameter. Hereinafter, the structure of different liquid metal meshes will be described with reference to the drawings.

5A and 5B show side views of two examples of liquid metal meshes having different thicknesses. In the fifth and fifth panels, the liquid metal mesh is covered by the cured layer 6 having the pattern opening 61 so that the ink can be printed onto a surface through the pattern opening of the cured layer 6 to form a printed pattern. . The cured layer 6 can be formed by curing the emulsion with ultraviolet light. In the fifth A diagram, since the mesh main body 51a has a uniform thickness H1, the fifth through the fifth The printed patterns 65a printed on the screen in the figure A have the same thickness. In the fifth B diagram, the mesh main body 51b has two different thicknesses H1, H2 at different pattern openings, and therefore, the mesh main body 51b can print the printed patterns 65b1 and 65b2 having two different thicknesses. The examples shown in the fifth and fifth panels are intended to illustrate the effect of the difference in thickness of the liquid metal mesh on the thickness of the printed pattern, and not on the structure of the liquid metal mesh; those skilled in the art can The mesh mold is designed as needed to form a mesh body having a plurality of thicknesses, thereby achieving a desired printing effect.

6A to 6C are plan views showing three examples of liquid metal meshes having different hole shapes, respectively. In the sixth diagram, the liquid metal mesh has a square hole 52a, in the sixth B, the liquid metal mesh has a circular hole 52b, and in the sixth C, the liquid metal mesh has To prove the hexagonal hole 52c. A person skilled in the art can design a mesh mold according to different needs to form a liquid metal mesh having holes of different shapes.

In addition, liquid metal mesh formed by using a liquid metal alloy may also have holes having different distances and sizes, and mesh wiring diameters having different widths. 7A to 7B are top views showing liquid metal meshes having different pore distribution patterns, respectively. In the liquid metal mesh shown in Fig. 7A, there are a total of three different sizes of holes 52i, 52j and 52k. The size relationship between the holes 52i, 52j and 52k is the hole 52i> the hole 52j> the hole 52k, in other words, the liquid metal mesh shown in the seventh drawing has the hole gradually becoming smaller from left to right. In addition, the liquid metal mesh shown in FIG. 7A has three different mesh wiring diameters W1, W2, and W3 in total, and the relationship between the three mesh wiring diameters is W1 < W2 < W3, that is, In the seventh picture A, it is thickened from left to right in order.

The liquid metal mesh shown in Figure 7B has a total of two different holes 52x and 52y. The shape of the hole 52x is a regular quadrangle, the shape of the hole 52y is a rectangle, and the size of the hole 52y is designed to be larger than the size of the hole 52x. In addition, the mesh routing diameter between two adjacent holes 52y is smaller than The hole diameter between two adjacent holes 52x. Similarly, those skilled in the art can design mesh molds according to different needs to form liquid metal meshes having different hole distributions and mesh routing diameters.

The above description of the embodiments of the present invention and the application examples thereof are not intended to limit the scope of the present invention, and any improvement and variation that can be accomplished by those skilled in the art based on the contents of the present invention should be considered. It is intended to be included within the scope of the appended claims. Any equivalent structure that is achieved by the use of the contents of the present invention and the accompanying drawings, whether directly or indirectly applied to the art or other related art, is considered to be within the scope of the present invention.

S21‧‧‧Preparation steps

S22‧‧‧melting step

S23‧‧‧ injection steps

S24‧‧‧Molding steps

Claims (9)

A method for manufacturing a liquid metal mesh comprises the steps of: preparing a mesh mold; preparing a high temperature heating furnace capable of precisely controlling the heating temperature; adding a pre-melted liquid metal alloy to the high temperature heating furnace The high temperature heating furnace heats the liquid metal alloy to a predetermined temperature; introducing the liquid metal alloy heated to the predetermined temperature in the high temperature heating furnace into the mesh mold through an injection unit; and waiting for the liquid metal alloy After forming the liquid metal mesh in the mesh mold, the liquid metal mesh is released from the mesh mold; wherein the liquid metal mesh has a mesh body, and the mesh body has A plurality of holes penetrating the main body of the mesh. The method for producing a liquid metal mesh according to the first aspect of the invention, wherein the liquid metal alloy contains at least one of zirconium, copper, nickel, aluminum, titanium, cobalt, and a platinum alloy. The method for producing a liquid metal mesh according to the second aspect of the invention, wherein the liquid metal alloy further comprises at least one of chromium, iron, niobium, carbon, boron, phosphorus, tungsten, and molybdenum alloy. A liquid metal mesh comprising: a mesh body, the mesh main system is made of a liquid metal alloy, and the mesh body has a plurality of holes penetrating the mesh body. A liquid metal mesh according to item 4 of the patent application, wherein the mesh body has a flat plane, and the mesh body has a uniform thickness. A liquid metal mesh according to claim 4, wherein the mesh body has a flat surface, and the mesh body has at least a first thickness and a second thickness. A liquid metal mesh according to item 4 of the patent application, wherein the holes of the liquid metal mesh have a quadrangular, circular or polygonal shape. The liquid metal mesh according to claim 4, wherein the holes of the liquid metal mesh comprise at least a plurality of first holes and a plurality of second holes, the first holes having the second holes Different sizes. The liquid metal mesh according to claim 4, wherein each of the two adjacent holes in the liquid metal mesh has a mesh routing diameter, and the liquid metal mesh has at least two The mesh routing diameter of the above different widths.