TW201805135A - Method for manufacturing multi-layer acrylic plates and equipment for manufacturing the same comprising the steps of blending a slurry, manufacturing molds, assembling the molds, infusing the slurry, and reacting to form the product - Google Patents

Abstract

Provided is a method for manufacturing a multi-layered acrylic sheet and an equipment for manufacturing the same, wherein the aforementioned manufacturing equipment is a mold which comprises an upper mold, a lower mold, a first elastic ring, a second elastic ring, an acrylic laminate, a fastening element, and a clamping element, the acrylic plate having a multi-layer structure is manufactured by the steps of blending a slurry, manufacturing molds, assembling the molds, infusing the slurry, and reacting to form the product, which constitute the present invention.

Description

Manufacturing method of multi-layer acrylic plate and using jig

The present invention relates to an acrylic sheet, in particular to a method for manufacturing a multi-layer acrylic sheet and a jig for using the same.

It is familiar with the production of acrylic plates. Screen printing is common. After the acrylic plates are formed in the manufacturing process, the ink printing pattern is printed on the acrylic plates that have been cut. . In addition, the injection molding method of the mold core is to first mold the inner surface of the metal mold cavity by using a special processing machine and a tool to cut and mold a preset pattern, and then inject the plastic into the mold cavity. Another method is to form a predetermined pattern on the glass mold by etching, and then pour the plastic into the mold to form the plate. Therefore, first select the location of the corrosion for exposure, and then use this etching method to perform corrosion according to the exposed pattern.

However, the above-mentioned manufacturing methods of acrylic plates can only produce single-layer acrylic plates, and cannot produce multi-layer acrylic plates, which is the focus of the present invention to improve.

The main purpose of the present invention is to solve the above-mentioned problems and provide a method for manufacturing multi-layer acrylic plates and a jig for using the same, so as to achieve the effect of making multi-layer acrylic plates.

In order to achieve the foregoing object, the present invention provides a use tool for manufacturing multi-layer acrylic plates, a mold comprising:

The lower die is made of glass and has an upper surface;

A first elastic ring, which is hollow and has a first perforation, and is fixed to the upper surface of the lower mold by a fixing element;

A second elastic ring having a width and thickness smaller than the first elastic ring and placed in the first perforation on the upper surface, the second elastic ring having a second perforation;

An acrylic laminate, overlapping the second elastic ring in the first perforation and covering the second perforation;

An upper mold made of glass material and having a lower surface, the upper mold covering the first elastic ring and the acrylic laminate with the lower surface facing the upper surface;

A clamping element clamps the upper mold and the lower mold to press the first elastic ring to form a closed first space between the upper mold and the lower mold, and is fixedly stacked on the first space. Inside the second elastic ring and the acrylic laminate, the second perforation forms a second space that can be sealed after being filled with slurry.

Wherein, the material of the first elastic ring and the second elastic ring is synthetic resin.

The fixing element is a plurality of fixing lines.

The clamping element is a plurality of G-shaped clamps.

To achieve the foregoing object, the present invention provides a method for manufacturing a multi-layer acrylic plate, including:

a reconcile a slurry;

b. Preparation of a mold, which includes an upper mold, a lower mold, a first elastic ring, a second elastic ring, an acrylic laminate, a fixing element and a clamping element, the upper mold and the The lower mold is made of glass material;

c. assemble the mold, use the clamping element to clamp the upper mold and the lower mold to press the first elastic ring to form a closed first space between the upper mold and the lower mold, and stack them The second elastic ring and the acrylic laminate are fixed in the first space, and the second perforation forms a second space which can be sealed after being filled with slurry. ;

d. injecting a slurry, which is infused in the second space;

e. Reaction forming. The slurry to be poured into the second space generates a curing reaction and a polymerization reaction, and forms another acrylic laminate that is combined with the acrylic laminate to form a multilayer acrylic plate. Pieces.

The slurry is prepared by prepolymerizing at least 50% by weight of methyl methacrylate into a viscous liquid and adding an initiator.

Wherein, the step of reconciling the slurry further includes a step of filtering slurry impurities by using vacuum pressure.

Wherein, after the step of injecting the slurry is completed, an exhausting process is required. After the exhausting is completed, the upper mold and the lower mold are completely tightened.

Wherein, the curing reaction is to cool a mold filled with grout into a pool with a water temperature of 25 to 75 ° C; the polymerization reaction is a process of placing a high temperature furnace at a temperature of 75 to 150 ° C.

Wherein, after the steps of the curing reaction and the polymerization reaction are completed, the subsequent processes such as demolding, cutting, quality control, and packaging are performed.

The above and other objects and advantages of the present invention can be easily understood from the detailed description and accompanying drawings of selected embodiments below.

Please refer to FIG. 1 to FIG. 6. The figure shows the structure of the embodiment of the present invention. This is for illustration only, and it is not limited by this structure in patent applications.

This embodiment provides a method for manufacturing multi-layer acrylic plates and a jig for using the same. First, the multi-layer acrylic plate for this embodiment uses a jig. As shown in Figs. 1 and 2, it is a mold. 1 includes: an upper mold 11, a lower mold 12, a first elastic ring 13, a fixing element 14, a clamping element 15, a second elastic ring 16, and an acrylic laminate 17. The upper mold 11 has an upper surface 111 and a lower surface 112, the lower mold 12 has an upper surface 121 and a lower surface 122, and the upper mold 11 and the lower mold 12 are made of glass material.

In this embodiment, the lower surface 112 of the upper mold 11 and the upper surface 121 of the lower mold 12 are defined by glaze to define a predetermined pattern on the lower surface 112 or the upper surface 121 with a glaze, wherein the glaze is glazed. The method is one of dipping method, brushing method, spraying method, glaze method, embossing method or screen printing. In addition, in this embodiment, the glaze is defined on the lower surface 112 or the upper surface 121 by screen printing, and the surface of the mold with the glaze is heated. Among them, the main composition of the glaze is silicon oxide and aluminum oxide. Mainly a silicate substance.

As shown in FIGS. 1 and 2, the first elastic ring 13 is hollow and has a first perforation 131. The first elastic ring 13 is fixed on the upper surface 121 of the lower mold 12 by the fixing element 14. In this embodiment, the material of the first elastic ring 13 is synthetic resin, and the fixing element 14 is a plurality of fixing wires. In different implementations, the fixing element 14 can also position the first elastic ring 13 on the lower surface 112 of the upper mold 11.

The second elastic ring 16 is smaller in width and thickness than the first elastic ring 13 and is placed in the first perforation 131 between the upper surfaces 121 of the lower mold 12. The second elastic ring 16 has a second perforation 161. The acrylic laminate 17 overlaps the second elastic ring 16 in the first perforation 131 and covers the second perforation 161, and covers the upper mold 11 with the lower surface 112 of the upper mold 11 facing the upper surface 121 of the lower mold 12. The first elastic ring 13 and the acrylic laminate 17 are covered.

The clamping element 15 clamps the upper mold 11 and the lower mold 12 to press the first elastic ring 13 to form a closed first space A between the upper mold 11 and the lower mold 12, and is fixedly stacked on the first space A. The second elastic ring 16 and the acrylic laminate 17 and the second perforation 161 form a closed second space B which can be filled with slurry.

Please refer to FIG. 3. In the manufacturing method of this embodiment, firstly prepare a slurry 18 of acrylic plate in a storage tank. The slurry 18 includes at least 50% by weight of methyl methacrylate prepolymerized into a viscous liquid and Made by adding an initiator. After the mixing of the slurry 18 is completed, the impurities of the slurry 18 are filtered by vacuum pressure, and the filtered slurry 18 will be poured into the mold 1 by pouring.

As shown in FIG. 4, the lower surface 112 of the upper mold 11 and the upper surface 121 of the lower mold 12 of the mold 1 are defined by screen printing on the lower surface 112 and the upper surface 121 by screen printing. Then, the glaze is applied to the lower surface 112 or the upper surface 121 according to a preset pattern by imprinting, so that the lower surface 112 and the upper surface 121 generate a preset pattern.

Continue to heat the lower surface 112 or upper surface 121 of the glaze in three stages. The first stage is from room temperature to 500 ° C; the second stage is from 500 to 580 ° C, and the lower surface 112 and upper surface 121 are slightly softened; The third stage is from 580 ° C to 620 ° C. The lower surface 112 and upper surface 121 are completely softened. The glaze supply is integrated with the lower surface 112 and upper surface 121. The lower surface 112 and upper surface 121 are sintered. Slowly lower the temperature of the lower surface 112 and the upper surface 121 to room temperature.

Because screen printing and embossing glazes are used on the lower surface 112 and the upper surface 121, larger acrylic sheets can be produced, and the upper mold 11 or lower mold 12 is not subjected to destructive processing during the manufacturing process. The mold has a long service life and is superior to conventional technology in cost and production efficiency.

Next, the first elastic ring 13 is pulled into a ring shape and fixed to the lower mold 12, and the first elastic ring 13 is fixed to the four corners of the lower mold 12 by the fixing element 14, whereby the first elastic ring 13 is opened to make it It is roughly square. After the first elastic ring 13 is fixed, the second elastic ring 16 is positioned in the first hole 131 of the first elastic ring 13 and the acrylic laminate 17 is stacked on the second elastic ring. 16 and the acrylic laminate 17 covers the second perforation 161 of the second elastic ring 16 and then the upper mold 11. At this time, the first elastic ring 13 is located between the upper mold 11 and the lower mold 12, and the first The elastic ring 13 is made of a synthetic resin. After the slurry 18 enters the mold 1, the shrinkage margin is absorbed.

Continue to use a plurality of G-shaped clamps 15 to clamp the upper mold 11 and the lower mold 12 so that the first perforation 131 forms a first space A between the lower surface 112 of the upper mold 11 and the upper surface 121 of the lower mold, and is stacked. The second elastic ring 16 and the acrylic laminate 17 are fixed in the first space A, and the second perforation 161 forms the second space B. The mixed slurry 18 is poured into the first space A and the second space B. After the slurry 18 is poured, the first space A and the second space B are sealed. In this embodiment, firstly fix the three sides of the mold 1 with the G-clamp 15 first, and then rotate the mold 1 so that the unsecured fourth side faces upward. Please refer to the operation diagram in FIG. The injection tube 2 is placed on the side, and the slurry 18 is filled with the injection tube 2. Since the mold 1 is made of glass material, during the filling of the slurry 18, the progress of the grouting and whether bubbles form can be observed. 1 Return to the original horizontal position, and fasten the fourth side with the G-clamp 15, and then apply pressure to the upper mold 11 for air supply and exhaust. Finally, fully tighten the four sides of the upper mold 11 and the lower mold 12 to complete the book. Example of the perfusion process.

After the mold 1 is filled with the slurry 18, it is then placed in a pool (not shown) at a water temperature of 25 to 75 ° C to cool it to accelerate the hardening. The density of the liquid after the reaction solidifies from 0.94 to about 1.19. The thickness and thickness of the fixture control board are determined by scaling down to meet the thickness requirements of acrylic plates. After the curing reaction is completed, continue to place in a high temperature furnace at 75 ~ 150 ° C (not shown in the figure). ) To accelerate the polymerization reaction. The acrylic laminate 19 is formed after the curing reaction and the polymerization reaction, as shown in FIG. 6, that is, the combination of the acrylic laminate 17 and the formed acrylic laminate 19 to form a multilayer acrylic board. Pieces. The finished product of the multi-layer acrylic plate is the side 171 of the acrylic laminate 17 facing the lower surface 112 to form a pattern corresponding to the preset pattern of the lower surface 112, and the acrylic laminate 19 faces the upper surface 121. The side 191 forms a pattern corresponding to a predetermined pattern of the upper surface 121.

Finally, post-mold processes such as demolding, deburring, cutting, quality control, and packaging are performed. Among them, the cutting step is completed because a group of molds can be made into multi-layer acrylic plates of more than 20 to 40 pieces at a time. After the multilayer acrylic sheet is manufactured, it needs to be cut to obtain the required multilayer acrylic sheet.

From the above description, it is not difficult to find the advantages of the present invention. By using the above-mentioned multi-layer acrylic sheet using the manufacturing tool and manufacturing method, multi-layer acrylic sheet can be made to solve the conventional printing by screen printing The mold injection molding and corrosion methods can only produce single-layer acrylic plates, but cannot produce multi-layer acrylic plates.

The disclosure of the embodiments described above is used to illustrate the present invention, and is not intended to limit the present invention. Therefore, any change in numerical values or replacement of equivalent components should still belong to the scope of the present invention.

From the above detailed description, those skilled in the art can understand that the present invention can indeed achieve the aforementioned purpose, and indeed has met the provisions of the Patent Law, and filed a patent application.

1‧‧‧ mould
11‧‧‧ Upper mold
111‧‧‧ top surface
112‧‧‧ lower surface
113‧‧‧Online
12‧‧‧ lower mold
121‧‧‧ Top surface
122‧‧‧ lower surface
13‧‧‧first elastic ring
131‧‧‧ first perforation
14‧‧‧Fixed components
15‧‧‧ clamping element
16‧‧‧Second elastic ring
161‧‧‧second perforation
17‧‧‧Acrylic Laminate
171‧‧‧ noodles
18‧‧‧ slurry
19‧‧‧Acrylic Laminate
191‧‧‧ noodles
A‧‧‧First Space
B‧‧‧Second Space

FIG. 1 is a schematic diagram of the structure of the present invention when the jig is disassembled. Fig. 2 is a schematic cross-sectional structure view of the present invention after pouring slurry using a jig. FIG. 3 is a flowchart of the manufacturing method of the present invention. Figure 4 is a schematic diagram of the screen printing operation of the present invention. Fig. 5 is a schematic diagram of the operation of the pouring slurry of the present invention. FIG. 6 is a schematic cross-sectional view of a multi-layer acrylic plate finished product made by the manufacturing method of the present invention.

1‧‧‧mould

111‧‧‧ top surface

12‧‧‧ lower mold

122‧‧‧ lower surface

131‧‧‧ first perforation

16‧‧‧Second elastic ring

17‧‧‧Acrylic Laminate

A‧‧‧First Space

11‧‧‧ Upper mold

112‧‧‧ lower surface

121‧‧‧ Top surface

13‧‧‧first elastic ring

15‧‧‧ clamping element

161‧‧‧second perforation

18‧‧‧ slurry

B‧‧‧Second Space

Claims (10)

The utility model relates to a manufacturing tool for manufacturing multi-layer acrylic plates. The mold comprises: a lower mold made of glass material and having an upper surface; a first elastic ring which is hollow and has a first perforation, and is The fixing element is fixed on the upper surface of the lower mold; a second elastic ring, the width and thickness of which are smaller than the first elastic ring and placed in the first perforation on the upper surface, the second elastic ring has a second perforation ; An acrylic laminate, which overlaps with the second elastic ring in the first perforation and covers the second perforation; 上 an upper mold, which is made of glass material, has a lower surface, and the upper mold uses the lower surface Cover the first elastic ring and the acrylic laminate toward the upper surface; a clamping element for clamping the upper mold and the lower mold to press the first elastic ring between the upper mold and the lower mold A closed first space is formed between the molds, and the second elastic ring and the acrylic laminate are fixedly stacked in the first space. The second perforation forms a sealed second space which can be filled with slurry. space. The manufacturing tool for manufacturing a multilayer acrylic plate according to claim 1, wherein the material of the first elastic ring and the second elastic ring are both synthetic resin. The use jig for manufacturing a multilayer acrylic plate according to claim 1, wherein the fixing element is a plurality of fixing wires. The jig for manufacturing a multilayer acrylic plate according to claim 1, wherein the clamping element is a plurality of G-shaped clamps. A method for manufacturing a multi-layer acrylic plate, comprising the following steps: a. Blending a slurry; b. Preparing a mold, the mold system includes an upper mold, a lower mold, a first elastic ring, a second An elastic ring, an acrylic laminate, a fixing element and a clamping element, the upper mold and the lower mold are made of glass material; c. Assembling the mold, using the clamping element to clamp the upper mold and the A lower mold to press the first elastic ring to form a closed first space between the upper mold and the lower mold, and the second elastic ring and the acrylic laminate are stacked in the first space And fixed, the second perforation forms a closed second space that can be filled with slurry; d. Pouring a slurry, which is filled with the slurry in the second space; The slurry produces a curing reaction and a polymerization reaction, and forms another acrylic laminate that is combined with the acrylic laminate to form a multilayer acrylic plate. The method for manufacturing a multilayer acrylic sheet according to claim 5, wherein the slurry is prepared by prepolymerizing at least 50% by weight of methyl methacrylate into a viscous liquid and adding an initiator. The method for manufacturing a multilayer acrylic sheet according to claim 5, wherein the step of reconciling the slurry further includes a step of filtering slurry impurities by vacuum pressure. The method for manufacturing a multilayer acrylic sheet according to claim 5, wherein after the step of injecting the slurry is completed, an exhaust process is required, and after the exhaust is completed, the upper mold and the lower mold are completely fixed. mold. The method for manufacturing a multilayer acrylic sheet according to claim 5, wherein the curing reaction is to cool the filled mold into a pool with a water temperature of 25 to 75 ° C, and the polymerization reaction is set to a temperature between Process of high temperature furnace at 75 ~ 150 ℃. The method for manufacturing a multilayer acrylic sheet according to claim 5, wherein after the steps of the curing reaction and the polymerization reaction are completed, the subsequent processes such as demolding, cutting, quality control, and packaging are performed.