JPS60203404A - Molding device for pressure curing board - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for obtaining a cured plate by pressure forming an uncured plastic material such as slate material or pulp into a plate shape.

When a hardened molded plate of the hardwood is obtained by pressure forming a plastic material between a receiving mold and a pressurizing mold, the molding plate is pressed by the pressurizing mold so that it comes into close contact with the pressing surface of the 7JO press mold, so that It takes a lot of effort to take out the molded plate, and it becomes even more difficult to take it out when the uneven pattern is loosened on the molding surface at the same time as molding.

For this reason, conventional methods have been to insert a spatula from the edge of the molded plate and gradually peel it off, or to suck air from the edge and gradually peel it off. The molded plate is distorted by damaging and peeling operations,
Furthermore, it takes a considerable amount of time to peel off the entire surface, and a lot of labor and time are consumed for demolding, reducing work efficiency.

The overall purpose of the present invention is to improve the above-mentioned conventional disadvantages and to improve work efficiency by easily and safely releasing the pressure-formed plate in a short time and without damaging the pressure-formed plate using extremely simple means. In a forming machine that obtains a hardened sheet metal by sandwiching a material plate between a pressure mold and a pressure mold, a flexible membrane material is closely polymerized around the periphery of the pressure surface of the pressure mold, and fluid is pumped to the back surface of the mold.

During molding, the membrane material is brought into close contact with the mold surface of the 11-pressure mold by creating a negative pressure on the back side of the membrane material by suctioning the fluid, and during mold release, the membrane material is pressure-formed by pumping the fluid. It is made so that it can be deformed in a bulging manner on the surface of the plate.

An embodiment of the present invention will be explained with respect to meat.

In the drawing, (1) is a fixed receiving mold, and (2) is a pressurizing mold that is installed to move up and down with respect to the receiving mold (1). The opposing surfaces of both molds tll+21 are shown symmetrically molded.

Concave grooves (1a)k were formed vertically and horizontally on the upper surface of the receiving mold (1), and an uncured plastic plate containing water was used as a raw material plate for water drainage during IJD pressure molding. Further, on the upper surface of the receiving mold (1), a movable molding plate (3) made of a hard material such as a metal plate, which has the shape of the mold surface of the receiving mold il+, that is, a corrugated shape in the illustrated example, is completely superposed.
A surface material plate a is placed on the upper surface of the molding plate to perform pressure forming, and after pressure forming, the molding plate on the upper surface is carried out together with the movable mold plate (3), and the movable mold plate (31 is also drained). Through-holes (3a) for use are arranged in a k-average distribution.Furthermore, as shown in Fig. 1, frame rods (4
) (4) A shaft rod (5) is rotatably mounted at an appropriate interval between them, and a wheel (6) on the shaft rod f5+ is mounted.
Slots (7) whose upper parts are respectively arranged in the receiving mold (1)...
The iJ movable mold plate (3) can be floated from the receiving mold (1) surface by the ejection and retraction operation, and the frame rods (4) (4) are always spring-loaded. (4a)...
...I encouraged them to move up.

Furthermore, a chain ring (8) is tied to one end of each shaft rod (5), a chain 2 (9) is hung on this, and each shaft rod (51... ... to drive the wheels (6
)......, and the movable mold plate (3) mounted on this and the material plate a placed on its upper surface are pressed into a pressurized mold (2).
It is now possible to carry in and out from the bottom of the .

Thus, as shown in Fig. 1, the material plate IL placed on the movable mold plate (3) is positioned directly below the pressure mold (21), and then the pressure mold (2) is moved completely downward to form the receiving mold (1). The material plate a is pressed between the pressure mold (21) and pressure-formed into a predetermined shape. It is extremely difficult to release this from the mold, especially when the mold surface has an uneven pattern such as a thin plate.
The mold release was an extension.

In order to solve the above-mentioned disadvantages, the invention is to polymerize a flexible membrane material αυ of rubber or synthetic resin on the mold surface of the pressurizing mold (2), and its periphery is brought into close contact with the pressurizing mold (2) to make it airtight. At the same time as binding, a flexible membrane material (1υ) is arranged in an appropriate distribution through holes (12+) on the back side of the pressurized type, and the flexible membrane material α
2, air or water, etc., was fully pumped and suctioned behind it. In the drawing, reference numeral 03 is a fluid introduction pipe, which is suddenly communicated with each of the distributed through holes a through branch pipes, and each branch pipe I is provided with an on-off valve (15+).

Next, the operation of releasing the mold from the molding plate will be explained with reference to FIGS. 4 to 6.

As shown in Fig. 4, a pressurized mold (2) is created by placing a material plate a previously obtained by papermaking or other processes on a movable mold plate (3).
The fluid inlet pipe (131) is communicated with a suction source using air or water to create a negative pressure in the multi-fluid channel, and the flexible membrane material αυ is transferred to a pressurized type (2). ) When moving the pressure mold (2) downward while suctioning it tightly against the mold surface, move the movable mold plate (31) on which the material plate a is placed, as shown in (4a) and press down against the mold (
1) Press-form the material plate a between the two. In this case, the water-containing material is squeezed out by the above-mentioned squeezing, and the water is removed through the holes (5a) of the movable mold plate (3) and the grooves (1a) of the receiving mold (1), and the water is removed by 5.2° . *H”y**, 76°T*fj
5 to 7JIl□, 'The raw plate a is compression molded and broken to obtain a hardened molded plate.

When the mold (21) is moved upward and separated, fluid is pumped into the fluid flow path, and the fluid pressure applied to the back of the flexible membrane material aυ through the through hole az causes the membrane material aυ to bulge and deform. Since the shape of the surface of the material plate a corresponds to the surface shape of the material plate a, the close relationship between the membrane material (ill) and the material plate a is broken because the material plate is partially under pressure, and the movable mold plate (3) is ) is released from the pressure mold (2) due to its own weight, and is supported by the spring (4a) on the roller (6) protruding from the surface of the receiving mold fi1.
The JII pressure mold (2) moves upward and returns to the state shown in FIG. It is carried out from the underside of the plate, replaced with a new material plate a, and introduced for the next forming operation.

When the contact area between the material plate a and the flexible membrane material αυ is large during mold release due to the bulging deformation of the flexible film material aυ, it is necessary to release the mold relatively due to the degree of adhesion. This may cause unsmooth operation, and in order to prepare for the next operation after the mold release operation, the membrane material Q]), which was bulged and deformed during mold release, is applied to the mold surface of the pressurized mold (2) by suction of the working fluid. When the area to be restored is wide, incorrect folds may occur depending on the shape of the pressing die surface. Especially when the die surface is flat and wide, incorrect folds often occur. If folds occur, there is an inconvenience that the next molding process may result in a defective product with irregularities on the surface of the product. In order to eliminate this problem, if a flexible membrane material (111) is partially attached to the pressure mold (2) at a suitable location and a leaf is formed using an adhesive, etc.
Even in the molding operation of a wide planar plate as shown in the figure, when the membrane material αIl is released from the mold, it swells in a small area without expanding greatly, so the mold release is performed smoothly, and also when the membrane material circle is restored by suction. It is possible to properly follow the mold surface without causing incorrect pleats.

Of course, when molding a small area, such adhesive parts (l)
A means for providing such information is not necessarily required.

In this way, according to the present invention, the edge of the flexible membrane material 1klWI is brought into close contact with the mold surface of the pressurizing mold for polymerization, and the fluid can be pumped or suctioned to the back surface of the mold, and the fluid can be suctioned during molding operations. By applying negative pressure to the back side of the membrane material, the material plate is pressure-molded between the receiving molds with the membrane material closely attached along the mold surface by suction pressure, and when releasing from the mold after 7JO pressure forming, the back side of the membrane material is The fluid is pumped through the membrane material so that it bulges and deforms against the surface shape of the pressure-formed plate, making release from the mold extremely smooth and easy. It is easy to release the mold, eliminates the negative effects of the conventional palliative m-shaped method, and can be peeled off from the mold surface in a short time and without damaging the molded plate, improving work efficiency and creating an excellent pressure-cured sheet metal. It has the effect that can be obtained.

[Brief explanation of the drawing]

The drawings show an example of the present invention; Figure 1 is a front view;
Figure 2 is a side view, Figure 6 is a plan view of the receiving mold, Figures 4 and 5.
In addition to the drawings, FIG. 6 is a cut front view of each essential part showing the operating state M, FIG. 7 is a cut front view showing another embodiment, and FIG. 8 is a cut front view of the released state. fi+... Receiving mold (2)... Pressure mold (3)... Movable mold plate Oυ... Flexible membrane material a... Material 2 people outside the board Figure 7 Figure 8 Procedure correction Book Showa 1j0.4μs OB Commissioner of the Japan Patent Office 1, Indication of the case 1982 Patent Application No. 58507 2, Name of the invention Pressure hardened plate forming device 3, Relationship with the amendment person case Patent applicant Tomito Co., Ltd. Manufacturer 4, Agent 6, Sections ``Claims'', ``Detailed Description of the Invention'' and ``Brief Description of Drawings'' to Specification Subject to Amendment 1, Drawing 7, Contents of Amendment 1, ``Claims'' in the Specification The column "Scope of Claims" has been amended as shown in the attached sheet. 2. "Inhaling" on page 2, line 5 of the specification should be replaced with "inhaling"
and correct it. 3. On page 2, lines 16-17, “On the pressure surface of the pressure mold...
・Correct "on the back" as shown below. A flexible membrane material is polymerized along the pressure surface of the pressurizing mold, and on the back side of the flexible membrane material 4. Correct "surface material plate" in line 13 of page 3 to "material plate". . 5. At the end of the third page of the same page, change "on the shaft (5)" to "on the shaft (5)".
) and corrected. 6. On page 4, line 14, "pressure forming" is corrected to "pressure forming." 7, page 4, lines 15 to 19 [It was difficult to form... ” is corrected as follows. Note: In this case, although not shown, a wire mesh with relatively small hooks is interposed between the movable template (3) and the material plate a to allow water contained in the material plate a to pass through during pressure forming. The fiber materials, etc. of the plate are captured by the wire mesh without passing through, and these fiber materials, etc. are inserted into the through holes (3a) of the movable mold plate (3) and the grooves (J: of the receiving mold (1)). 1a) can be prevented from clogging. In addition, when molding a corrugated molded plate as in the above example, it is necessary to make the mold surface of the movable mold plate (3) a similar shape according to the shape, but when obtaining a flat hardened plate, Instead of the movable template (3), an endless belt conveyor is used as a means for carrying in and out the raw material plate and the pressure-formed plate, and a part of it is conveyed along the mold surface of the receiving mold (1). In some cases, they are stretched and used for carrying in, transporting, and molding. As mentioned above, the back surface of the molded plate a, which is pressure-formed between the receiving mold (1) and the pressure mold (2), does not need to be particularly smooth and has through-holes (
3a) is moved to the right by the movable mold plate (3) or, as mentioned above, a wire mesh is interposed between the molds and the mold is formed on a relatively rough surface, so it is easy to separate without adhering tightly to the mold surface. Pressure type (2)
The molding surface requires a beautiful finish.l The surface of the molding plate must be made particularly smooth.l The surface of the molding plate must be airtightly joined to the mold surface and mutually pressed when pressing on the sloped surface. It is extremely difficult to release the mold when the molded plate is in close contact with the mold, and it is even more difficult to release the mold if the molded plate is thin or has unevenness due to an embossed pattern on the mold surface. Conventionally, as mentioned above, palliative manual methods were used, such as peeling off the mold from the outside with a spatula, or blowing air from the edge with a nozzle to gradually release the mold. [Flexible membrane material QZJ is referred to as “flexible membrane material (
It) J correction. ), on page 6, line 10, “to lower pressure” was changed to “lower pressure,”
"Therefore," he corrected. 10. On page 6, line 12, amend "according to the weight of the movable template (3)" to "according to the weight of the movable template (3)." 11. “Bulging deformation” on the last line of page 6, then [Part (11a)
Add J. 12, page 7, line 5 1 - bulging deformed membrane material a1)”
is corrected as [Ikli exit deformation part (11a) J. 13. Next to "wide" on page 7, line 9, [bulging deformed part (1
1a) adds ". 14. Next to page 8, line 2, add J as below. No. 9
As shown in the figure, the flexible film material aD is overlapped along the entire mold surface of the pressure mold (2) and used for pressure molding, but the bulging deformation part (11a) is localized (in the illustrated example, 4 Molding and mold release can be performed smoothly even if the number of parts is set as shown below, but the number can be increased or decreased as desired. 15. Next to ``1' sectional front view'' on page 9, line 4, ``Figure 9 is a partially cut-out bottom view showing a modified example of the pressurizing type''. 16, Attachment 111=j Figures 7 and 8 of the drawings are corrected as attached, and Figure 9 is added as attached. 17. Reference numerals (131) in Figures 5 and 6 of the attached drawings
Please make sure to correct (L/D) so that they are not shown in the attached copy drawings. 2. Scope of Claims: Pressing the material plate between pressure molds such as receiving molds to make a hardened molded board 1! In the molding machine, a flexible membrane material is polymerized on the pressurizing surface of the C1 pressurizing mold, and a fluid is pumped and suctioned to the back side of the flexible membrane, and during molding, the fluid is suctioned. By creating negative pressure on the back side of the membrane material, the membrane material is brought into close contact with the mold surface of the pressure mold.
A pressure-cured board forming device that is configured to bulge and deform a film material against the surface of a pressure-formed board by pumping fluid during mold release.

Claims (1)

[Claims] In a molding machine that obtains a hardened molded plate by clamping a material plate between a receiving mold and a pressing mold, a flexible film material (f: m) is tightly polymerized on the pressurizing surface of the pressing mold at the edge, and fluid is pumped to the back side of the molding machine. During molding, the membrane material is brought into close contact with the mold surface of the pressurized mold by creating a negative pressure on the back side of the membrane material by suctioning the fluid, and during mold release, the membrane material is pressed against the pressure molding plate by pumping the fluid. A 7JD pressure hardening plate imaging device configured to bulge and deform with respect to the surface.