TWI621751B - Manufacturing method for wet pulp molding assembly - Google Patents

Abstract

The invention provides a method for manufacturing a pulp molding mold assembly, which is used to shape a pulp molding embryo into a paper molding article, which comprises: first, preparing a flat mesh; then, using at least one pressing process The flat net is processed to form the outline, and has a shape corresponding to the shape of the pulp molding embryo; finally, the net is fixed to one of at least two sub-molds of a mold.

Description

Manufacturing method of pulp moulding mold component

The invention relates to a method for manufacturing a pulp molding mold component, and in particular, to a method for manufacturing a net in a pulp molding mold component.

In the technical field of pulp molding, in general, a weaving net (having a porous network) is provided between a mold and a pulp molding embryo to prevent the pulp molding embryo from sticking. On the surface of the mold. Referring to FIG. 1, a schematic diagram of a knitting net 10 according to the conventional art. In the conventional technology, the knitting net 10 includes a first surface 11, a second surface 12, and a third surface 13. The first surface 11, the second surface 12 and the third surface 13 are not integrally formed. In the actual manufacturing process, the first surface 11 and the second surface 12 are connected together by welding or other methods, and the second surface 12 and the third surface 13 are also connected in the same manner. However, welding takes a lot of time, and it can also cause problems due to human error.

Therefore, it is necessary to propose a method for manufacturing a pulp molding mold assembly to solve the above technical problems.

In order to overcome the shortcomings of the above-mentioned conventional technologies, one of the main objects of the present invention is to provide a pulp molding mold assembly for molding a pulp molding blank into a paper molding article, which includes a mold and a braided net.

The mold includes at least two sub-molds for forming the pulp molding body, and the pulp molding body is a geometric figure having a thickness. The knitting net is disposed on one of the at least two sub-molds, and has a shape corresponding to the shape of the pulp molding embryo body. Before forming the above-mentioned paper-molded article between the at least two sub-molds, the netting is used to retain the pulp-molded green body and prevent the pulp-molded green body from entering the inside of the at least two-mold to avoid obstructing the pulp Emission of water and / or water vapor from the moulded body. The netting is formed in one piece.

In a preferred embodiment, the mesh number of the netting is between 20-120.

In a preferred embodiment, the net is made of metal.

In a preferred embodiment, the knitting net is made by one of twill weaving, plain weaving, overlapping weaving, reed weaving, reed weaving, and weaving.

In a preferred embodiment, the braided screen is made of annealed stainless steel.

In a preferred embodiment, the knitting net is made by one of twill weaving, plain weaving, overlapping weaving, reed weaving, reed weaving, and weaving.

In order to overcome the shortcomings of the above-mentioned conventional technologies, one of the main objects of the present invention is to provide a method for manufacturing a pulp molding mold assembly for molding a pulp molding embryo into a paper molding article, which includes: first, preparing A flat mesh; then, the flat mesh is processed by at least one punching process to form the outline, and has a shape corresponding to the shape of the pulp molding embryo; finally, the net is fixed to a mold One of at least two child molds.

In a preferred embodiment, the mesh number of the netting is between 20-120.

In a preferred embodiment, the net is made of metal.

In a preferred embodiment, the knitting net is made by one of twill weaving, plain weaving, overlapping weaving, reed weaving, reed weaving, and weaving.

In a preferred embodiment, the braided screen is made of annealed stainless steel.

Compared with the conventional technology, the present invention can greatly reduce the preparation time of the knitted net by selecting a knitted net of a specific material and a specific number of meshes and preparing an integrated knitted net by a stamping method.

10, 160‧‧‧ Compilation

11‧‧‧ the first side

12‧‧‧ second side

13‧‧‧ third side

100‧‧‧Mould components

120‧‧‧Mould

130, 140‧‧‧ sub mold

150‧‧‧Stamping tools

155‧‧‧first direction

170‧‧‧ Pulp molded embryo

S01-S03‧‧‧step

FIG. 1 is a schematic diagram of the knitting of a pulp molding mold assembly of a conventional technology; FIG. 2 is a sectional view of a pulp molding mold assembly and a pulp molding embryo of the present invention; FIG. 3, FIG. 2 Figure 4 is a schematic diagram of the finished knitting process; Fig. 4 is a flowchart of a method for manufacturing a pulp molding mold assembly according to the present invention.

In order to make the above features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail below. The patent scope of the present invention is not limited to these embodiments, but should be defined by the scope of patent application.

FIG. 2 is a cross-sectional view of a pulp molding mold assembly 100 and a pulp molding body 170 according to the present invention. The mold assembly 100 includes a mold 120 and a braided mesh 160. The mold 120 includes two sub-molds 130 and 140 for forming the pulp molding body 170, and the pulp molding body 170 is a geometric figure having a thickness. In the preferred embodiment, the pulp molding body 170 only includes a groove for receiving an article, such as an electronic product, such as a mobile phone. However, according to different needs, the pulp molding body 170 may have different shapes, such as different shapes such as multiple grooves and / or openings in the middle. The netting 160 is disposed on one of the two sub-molds 130 and 140. In this preferred embodiment, the weaving net 160 is disposed on the sub-mold 130 and has a shape corresponding to the pulp The shape of the green body 170 is molded. Before forming a paper-molded article between the two sub-molds 130 and 140, the net 160 is used to retain the pulp-molded green body 170 and prevent the pulp-molded green body 170 from entering the at least two sub-molds 130, 140, 140 inside to avoid obstructing the water and / or water vapor discharge in the pulp molding body 170. The netting 160 is integrally formed.

Generally speaking, when the mesh number (number of perforations / square inch) of the knitting mesh 160 is too small, processing is difficult and easily broken during processing; and when the mesh number of the knitting mesh 160 is too large, it is being processed. In the process, it is easy to be pulled and deformed. After the processing is completed, the mesh strength of the knitting net 160 itself is reduced because the mesh size is too large. Therefore, preferably, when the mesh number of the knitting net 160 is between 20 and 120, the knitting net 160 can not be cracked or deformed during the punching process. Further, when the mesh number of the knitting net 160 is between 40 and 100, the knitting net 160 is not easily broken or deformed in the stamping process, and can have sufficient mechanical strength to facilitate mass production.

Generally speaking, the knitting net 160 is made of metal, and is made by one of the methods of twill weaving, plain weaving, overlapping weaving, weaving weaving, weaving weaving, and weaving weaving. Preferably, an annealed stainless steel is used. However, the present invention is not limited to the use of other non-metals or metal alloys as the material of the braid 160.

FIG. 3 and FIG. 2 are schematic diagrams after the completion of the machining of the netting 160 in FIG. 2. The netting 160 is processed by a punching tool 150 with a bump to produce a netting 160 having a groove. The punching tool 150 is moved in the direction of the first direction 155, and the flat mesh is processed by plastic deformation to obtain the knitted mesh 160.

FIG. 4 is a flowchart of a method for manufacturing a pulp molding mold assembly 100 according to the present invention. For component names, please refer to Figure 2 and will not repeat them. First, step S01 is executed. Prepare a flat mesh. Next, step S02 is performed, and the flat mesh is processed by at least one pressing process to form a knitting mesh 160 corresponding to the shape of the pulp molding body 170. Next, step S03 is performed to fix the knitting net 160 to one of the two sub-molds 130 and 140 of a mold 120.

The above-mentioned embodiments are merely examples for convenience of description, and the scope of rights claimed by the present invention should be based on the scope of the application, rather than being limited to the above-mentioned embodiments.

Claims (5)

A manufacturing method of a pulp molding mold component is used for molding a pulp molding embryo into a paper molding article, which comprises: preparing a mesh; and processing the mesh by using at least one pressing process. Forming a knitting net corresponding to the shape of the pulp molding body; and fixing the knitting net to one of at least two sub-molds of a mold. The method for manufacturing a pulp molding mold component according to item 1 of the scope of the patent application, wherein the mesh number of the knitting net is between 20-120. The method for manufacturing a pulp molding mold component according to item 1 of the scope of the patent application, wherein the braid is made of metal. The method for manufacturing a pulp molding mold component according to item 1 of the scope of the patent application, wherein the braided net is made of stainless steel with an annealing process. The manufacturing method of the pulp molding mold assembly as described in the first patent application scope, wherein the weaving net is made by one of the methods of diagonal weaving, plain weaving, weaving, weaving, weaving weaving, and weaving to make.