TW201738433A - Wet pulp molding assembly - Google Patents

Abstract

The invention provides a wet pulp molding assembly for forming a paper shape product, which comprises a mold and a formed mesh. The mold comprises at least two sub molds for forming a wet pulp body, and the wet pulp body has a geometric shape with a thickness. The formed mesh is disposed between the at least two molds, and configured corresponding to a configuration of the wet pulp body. Before forming the paper shape product between the at least two sub molds, the mesh is used to retain the wet pulp body and to prevent the wet pulp body from entering into an inside of the at least two sub molds, so as to avoid blockage of drain of water and/or vapor contained within the wet pulp body. The formed mesh is a single piece and integrally manufactured by directly pressing a single flat metal mesh.

Description

Pulp molding die assembly

The present invention relates to a pulp molding die assembly, and more particularly to a web in a pulp molding die assembly.

In the technical field of pulp molding, generally, a mesh (having a porous mesh) is disposed between a mold and a pulp molded body to avoid adhesion of the molded body of the pulp. On the surface of the mold. Referring to Figure 1, a schematic diagram of a network 10 of the prior art. In the prior art, the web 10 includes a first side 11, a second side 12, and a third side 13. The first face 11, the second face 12, and the third face 13 are not integrally formed. In the actual manufacturing process, the first face 11 and the second face 12 are joined together by welding or other means, and the second face 12 and the third face 13 are also connected in the same manner. However, it takes a lot of time to use such a method of welding, and it may also cause problems due to manual errors.

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

In order to overcome the above disadvantages of the prior art, it is a primary object of the present invention to provide a pulp molding die assembly for forming a pulp molded body into a paper molded article comprising a mold and a web.

The mold includes at least two sub-dies for forming the pulp molded body, the paper The pulp molded body is a geometric shape having a thickness. The mesh is disposed in one of the at least two sub-dies and has a shape corresponding to the shape of the pulp molded body. Before forming the paper molded article between the at least two sub-molds, the woven mesh is used to retain the pulp molded body and prevent the pulp molded body from entering the interior of the at least two sub-mold to avoid obstructing the pulp Emission of water and/or water vapor in the molded body. The mesh is integrally formed.

In a preferred embodiment, the number of meshes is between 20 and 120.

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

In a preferred embodiment, the mesh is made by one of a method of diagonal weaving, plain weaving, weaving, weaving, weaving, flat weaving, and the like.

In a preferred embodiment, the mesh is annealed stainless steel.

In a preferred embodiment, the mesh is made by one of a method of diagonal weaving, plain weaving, weaving, weaving, weaving, flat weaving, and the like.

In order to overcome the disadvantages of the above-mentioned prior art, it is a primary object of the present invention to provide a method of making a pulp molding die assembly for forming a pulp molded body into a paper molded article comprising: first, preparing a flat web; then, the flat web is processed by at least one stamping process to form the pattern having a shape corresponding to the shape of the pulp molded body; finally, the web is fixed to a mold At least one of the two sub-dies.

In a preferred embodiment, the number of meshes is between 20 and 120.

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

In a preferred embodiment, the mesh is made by one of a method of diagonal weaving, plain weaving, weaving, weaving, weaving, flat weaving, and the like.

In a preferred embodiment, the mesh is annealed stainless steel.

Compared with the prior art, the invention can prepare a monolithic forming fabric by stamping by selecting a specific material and a mesh of a specific mesh number, which can greatly save the preparation time of the netting.

10, 160‧‧‧

11‧‧‧ first side

12‧‧‧ second side

13‧‧‧ third side

100‧‧‧Mold components

120‧‧‧Mold

130, 140‧‧‧ sub-mold

150‧‧‧Pressing tools

155‧‧‧First direction

170‧‧‧Pulp molded body

S01-S03‧‧‧Steps

1 is a schematic view showing a mesh of a conventional pulp molding die assembly; FIG. 2 is a cross-sectional view showing a pulp molding die assembly and a pulp molded blank body of the present invention; FIG. 3, FIG. FIG. 4 is a flow chart showing a method of manufacturing a pulp molding die assembly of the present invention. FIG.

The above features and advantages of the present invention will be more apparent from the following description. The scope of the invention is not limited to the embodiments, but is defined by the scope of the claims.

2 is a cross-sectional view of a pulp molding die assembly 100 and a pulp molded blank body 170 of the present invention. The mold assembly 100 includes a mold 120 and a web 160. The mold 120 includes two sub-dies 130, 140 for forming the pulp molded blank body 170, the pulp molded blank body 170 being a geometric shape having a thickness. In the preferred embodiment, the pulp molded body 170 includes only one recess for receiving an article, such as an electronic product, such as a cell phone. However, depending on the requirements, the pulp molded body 170 can be of a different shape, such as a plurality of grooves and/or different shapes such as openings in the middle. The mesh 160 is disposed in one of the two sub-dies 130, 140. In the preferred embodiment, the mesh 160 is disposed over the sub-mold 130 and has a shape corresponding to the shape of the pulp molded body 170. Forming a paper molded article between the two sub-dies 130, 140 The web 160 is used to retain the pulp molded body 170 and prevent the pulp molded body 170 from entering the interior of the at least two sub-dies 130, 140 to avoid obstructing the water in the pulp molded body 170. And / or water vapor emissions. The mesh 160 is integrally formed.

In general, when the mesh number (the number of holes per square inch) of the mesh 160 is too small, the processing is difficult and it is easy to break during the processing; and when the mesh number of the mesh 160 is too large, the processing is performed. During the process, it is easily deformed by pulling, and after the processing is completed, the mechanical strength of the net 160 itself is also lowered because the mesh is too large. Therefore, preferably, when the net number of the net 160 is between 20 and 120, the net 160 can be prevented from being broken or deformed during the press working. Further, when the mesh number of the net 160 is between 40 and 100, the mesh 160 is not easily broken or deformed in the press working, and at the same time, it can have sufficient mechanical strength to facilitate mass production.

Generally, the mesh 160 is made of a metal material and is one of a method of diagonal weaving, plain weaving, weaving, weaving, weaving, and flat weaving. Preferably, the stainless steel is subjected to an annealing process. However, the invention is not limited to the use of other non-metal or metal alloys as the material for the web 160.

Fig. 3 is a schematic view showing the completion of the machining of the net 160 in Fig. 2. The web 160 is machined by a stamping tool 150 having a bump to form a flat web 160 to produce the web 160 having a recess. The punching tool 150 is moved in the direction of the first direction 155, and the flat web is processed by plastic deformation to obtain the net 160.

Fig. 4 is a flow chart showing a method of fabricating the pulp molding die assembly 100 of the present invention. For the component name, please refer to Figure 2, and I will not go into details. First, step S01 is performed to prepare a flat mesh. Then, step S02 is performed to flatten the plate by at least one stamping process. The web is processed to form a web 160 corresponding to the shape of the pulp molded body 170. Next, step S03 is performed to fix the mesh 160 to one of the two sub-dies 130, 140 of a mold 120.

The above-mentioned embodiments are only examples for convenience of description, and the scope of the claims should be based on the scope of the application, and is not limited to the above embodiments.

S01-S03‧‧‧Steps

Claims (10)

A method of making a pulp molding die assembly for molding a pulp molded body into a paper molded article, comprising: preparing a mesh; processing the mesh by at least one stamping process, Forming a web corresponding to the shape of the pulp molded body; and fixing one of the at least two molds of the mold to a mold. The method for fabricating a pulp molding die assembly according to claim 1, wherein the number of meshes is between 20 and 120. The method for fabricating a web of a pulp molding die assembly according to claim 1, wherein the mesh is made of a metal material. The method for fabricating a pulp molding die assembly according to claim 1, wherein the mesh is made of annealed stainless steel. The method for fabricating a pulp molding die assembly according to the first aspect of the invention, wherein the weaving mesh is in the form of diagonal weaving, plain weaving, weaving, weaving, weaving, weaving, and the like. Made in one. A pulp molding die assembly for molding a pulp molded body into a paper molded article, comprising: a mold comprising at least two sub-dies for forming the pulp molded body, the pulp molded embryo The body is a geometric shape having a thickness; and a mesh is disposed on one of the at least two sub-dies, and one shape corresponds to the pulp mold a shape of a plastic body, wherein the woven mesh is used to retain the pulp molded body and prevent the pulp molded body from entering the at least two sub-dies before forming the paper molded article between the at least two sub-dies Internally, it is avoided to hinder the discharge of water and/or water vapor in the pulp molded body, and the web is integrally formed. The pulp molding die assembly of claim 6, wherein the number of meshes is between 20 and 120. The pulp molding die assembly of claim 7, wherein the mesh is made of a metal material. The pulp molding die assembly of claim 8, wherein the mesh is made by one of a method of diagonal weaving, plain weaving, weaving, weaving, weaving, and flat weaving. The pulp molding die assembly of claim 6, wherein the mesh is made of annealed stainless steel.