JP3937231B2 - Core material coating apparatus and method - Google Patents

Description

The present invention relates to a core coating apparatus and method.

Conventionally, there has been a coating apparatus (see, for example, Patent Document 1) that coats (overlays) a skin material such as a plastic sheet on another core material made of synthetic resin. This core coating apparatus is used as follows.

That is, as shown in FIG. 15, a core material 53 made of synthetic resin or the like is set on a table 52 in the lower chamber box 51, and a skin material 54 such as a plastic sheet covering the core material 53 is placed on the upper surface of the lower chamber box 51. Set to. As shown in FIG. 16, the upper chamber box 55 is lowered to make the upper and lower chamber boxes airtight.

As shown in FIG. 16, the inside of the upper and lower chamber boxes is sucked from the vacuum tank 56 to be in a vacuum state (very low pressure state), and the heater H is turned on to heat the skin material 54 as shown in FIG. Then, as shown in FIG. 18, the table 52 in the lower chamber box 51 is raised together with the set core material 53, and the core material 53 is brought into contact with the skin material 54.

After that, as shown in FIG. 19, the vacuum on the upper chamber box 55 side is released to an atmospheric pressure state (the inside of the lower chamber box 51 is still in a vacuum state), so that the skin material 54 is pressed to apply the core material 53. And press along the shape. Further, at this time, as shown in FIG. 20, by putting compressed air from the pressurized air tank 57 into the upper chamber box 55, the skin material 54 can be brought into close contact with the core material 53 with a greater force. Finally, as shown in FIG. 21, the inside of the lower chamber box 51 is also returned to the atmospheric pressure state, the upper chamber box 55 is raised, and the coated core material 53 is taken out.

However, as shown in FIG. 19 and FIG. 20, when pressurizing and pressing the outer skin material 54 against the core material 53 and covering the core material 53 along its shape, the pressure resistance sufficient to support the pressure applied to the device such as the table 52 is sufficient. There was a need for strength.
JP 2002-67137 A

Therefore, the present invention intends to provide a coating apparatus and method for a core material that does not require as much pressure resistance as conventional.

In order to solve the above problems, the present invention takes the following technical means.

(1) The core material coating apparatus of the present invention comprises a chamber box that can be depressurized, and supplies a core material into the chamber box, depressurizes, and heats and softens the skin material toward the core material. It is characterized in that it is displaced downward and pressurizes the inside of the chamber box so that the skin material is pressed against the core material at the lower position to cover it.

This core material coating apparatus presses and coats the skin material that has been displaced downward during pressurization in the chamber box against the core material in the lower position, and during pressurization, the core material applies pressure at the lower position. Will receive.

(2) The core material coating method of the present invention is such that the core material is supplied into a depressurizable chamber box and depressurized, and the skin material heated and softened toward the core material is lowered and displaced, and the chamber box The inside is pressurized so that the skin material is pressed against the core material at a lower position to cover the core material.

In this core coating method , when the pressure inside the chamber box is pressed, the skin material that has been displaced downward is pressed against the core material at the lower position to cover the core material. Will receive.

(3) After covering the core material, the chamber box is opened and cooled to take out the core material. As a method for pressurizing the decompressed chamber box, it is possible to open to atmospheric pressure or supply pressurized air.

The core material may be convex or concave, and examples thereof include a three-dimensional curved surface such as an automobile center panel, an air conditioner outlet, a refrigerator or a fan heater exterior. On the other hand, examples of the skin material include plastic films and sheets that are decorated and printed in a wood grain tone or a stone tone.

Note that when the core material is supplied into the chamber box, the position may be adjusted by displacing the core material. This is because a large pressure is not applied to the apparatus when the position is adjusted and the chamber box is not pressurized. When pressurized air is introduced into the chamber box, a larger pressure is applied. However, the core material receives a pressure at a lower position at the time of pressurization, so that the apparatus has a simple structure and does not have to have such a large pressure resistance.

The present invention is configured as described above and has the following effects.

Since the core material receives pressure at the lower position during pressurization, it is possible to provide a coating apparatus and method for the core material that does not require as much pressure resistance as conventional.

Embodiments of the present invention will be described below with reference to the drawings.

(Embodiment 1)
As shown in FIGS. 1 to 7, the core material coating apparatus of this embodiment includes a chamber box 3 in which a core material 1 and a skin material 2 are disposed and closed and depressurized.

Then, the core material 1 is supplied into the chamber box 3 and the pressure is reduced, and the skin material 2 heated and softened toward the core material 1 is moved downward to pressurize the inside of the chamber box 3 to pressurize the skin material. 2 is pressed against the core material 1 at the lower position to cover it.

The core material 1 (core) may be convex or concave (not shown), and is a synthetic resin having a three-dimensional curved surface such as an automobile center panel, air conditioner outlet, refrigerator or fan heater exterior. The thing made from can be illustrated. On the other hand, the skin material 2 can be exemplified by a plastic film or sheet that is decorated and printed in a wood grain or stone tone. The skin material 2 is a synthetic resin that softens when heated and can be deformed, and hardens when cooled.

The core material coating method includes a disposing step of disposing and closing the core material 1 and the skin material 2 in the depressurizable chamber box 3, and reducing the pressure in the chamber box 3 integrally to form the skin material. A pressure reducing step for heating and softening 2, and a section for partitioning the core material 1 side in the integral decompression space of the chamber box 3 by relatively displacing the covering portion of the core material 1 with the skin material 2. A process and a covering process in which the inside of the chamber box 3 is pressurized from the skin material 2 side to cover the core material 1.

That is, first, as shown in FIG. 1, the upper housing 4 of the chamber box 3 is raised, the core material 1 is inserted onto the table 5 from above and lowered, and then the skin material 2 is placed on the lower housing as shown in FIG. Load on top of body 6. The skin material 2 is sandwiched between a pair of clamp frames 7 that can be displaced in the vertical direction in the chamber box 3.

As shown in FIG. 3, with the core material 1 and the skin material 2 disposed in the chamber box 3, the decompression space in the upper housing 4 and the lower housing 6 of the chamber box 3 is integrated. (The communication area does not appear in the figure.) The vacuum is reduced by vacuum suction, and the skin material 2 is heated from both upper and lower sides by an infrared heater H (near infrared or far infrared heater). And soften. The skin material 2 is heated from both the upper and lower surfaces so that the temperature difference between the surfaces is eliminated and uniform. The lower infrared heater H can be displaced in the horizontal direction so that it can be retracted after heating.

Next, as shown in FIG. 4, the skin material 2 is relatively displaced so as to cover the covering portion of the core material 1, and the core material 1 side in the integrated decompression space of the chamber box 3 as shown in FIG. 5. Partition. Specifically, as shown in FIGS. 4 and 5, the clamp frame 7 is moved downward to displace the skin material 2 downward, and is brought into contact with the table 5 on which the core material 1 is placed. The covering portion of the core material 1 disposed on the cover is foreseen. Thereby, in the integral decompression space of the chamber box 3, the space on the side where the core material 1 is encased and the space on the skin material 2 side are partitioned for the first time.

Thereafter, the inside of the chamber box 3 is opened to the atmospheric pressure from the skin material 2 side (see FIG. 5, the opening hole is not shown) and pressurized to cover the core material 1 (see FIG. 6). In addition, as a method of pressurizing the inside of the chamber box 3 from the skin material 2 side, the skin material 2 side can be opened to atmospheric pressure, or further pressurized air can be supplied. By supplying compressed air, the skin material 2 can be covered more closely with the core material 1 and coated.

Thereafter, the chamber box 3 is opened as shown in FIG. 6 and the fan F is driven to cool, and the core material 1 covered with the skin material 2 is taken out as shown in FIG. Then, the same process is repeated as the next processing cycle.

In summary, the core material 1 is supplied into the depressurizable chamber box 3 and depressurized, the skin material 2 heated and softened toward the core material 1 is displaced downward, and the interior of the chamber box 3 is pressurized. The skin material 2 is pressed against the core material 1 at a lower position so as to be covered.

Next, the usage state of the core coating apparatus of this embodiment will be described.

As shown in FIG. 5, when the pressure inside the chamber box 3 is pressed, the skin material 2 that has been displaced downward is pressed against the core material 1 at the lower position to cover the core material 1. Therefore, there is an advantage that a large pressure strength is not required as in the prior art.

As shown in FIG. 1, when the core material 1 is supplied into the chamber box 3, the position is adjusted by displacing the core material 1. At the time of position adjustment and when the inside of the chamber box 3 is not in a pressurized state, a large pressure is not applied to the apparatus. In addition, when a pressurized air is introduced into the chamber box 3, a larger pressure is applied. However, the core material 1 receives a pressure at a lower position at the time of pressurization, and the apparatus has a simple structure and does not have such a large pressure resistance. It will be over.

Further, as shown in FIG. 4, the inside of the chamber box 3 in which the core material 1 and the skin material 2 are disposed is decompressed integrally, and the skin material 2 is relatively displaced so as to cover the covered portion of the core material 1. The core material 1 side is partitioned in the integrated decompression space of the chamber box 3, and the skin material 2 side and the core material 1 side are still partitioned when the chamber box 3 is decompressed integrally. Since there is no difference in the degree of vacuum, there is an advantage that fine adjustment for balancing the degree of vacuum is not necessary and workability is good.

(Embodiment 2)
As shown in FIGS. 8 to 14, the core material coating apparatus according to the second embodiment supplies the core material in the horizontal direction mainly from the airtight supply door 8 formed in the lower housing 6 of the chamber box. It differs from the first embodiment in that it is taken out.

The core material coating apparatus of this embodiment also includes a chamber box 3 that can be closed and decompressed by disposing the core material 1 and the skin material 2.

Then, the core material 1 is supplied into the chamber box 3 and the pressure is reduced, and the skin material 2 heated and softened toward the core material 1 is moved downward to pressurize the inside of the chamber box 3 to pressurize the skin material. 2 is pressed against the core material 1 at the lower position to cover it.

The core material (core) may be convex or concave (not shown), and is made of a synthetic resin having a three-dimensional curved surface such as an automobile center panel, an air conditioner outlet, a refrigerator or a fan heater exterior. Can be illustrated. On the other hand, examples of the skin material include plastic films and sheets that are decorated and printed in a wood grain tone or a stone tone. The skin material is a synthetic resin, which softens when heated and can be deformed, and hardens when cooled.

The covering method of the core material includes a disposing step of disposing and closing the core material and the skin material in a depressurizable chamber box, and heating the skin material by decompressing the interior of the chamber box integrally. A decompression step of softening, a partitioning step of partitioning the core material side in an integrated decompression space of the chamber box by relatively displacing the covering portion of the core material with the skin material, and a skin inside the chamber box A coating step of applying pressure from the material side to cover the core material.

That is, first, as shown in FIG. 8, the core material is placed on the table 5 from the airtight supply door 8 formed in the lower housing 6 of the chamber box and supplied in the horizontal direction, and then as shown in FIG. The skin material is loaded on the upper surface of the lower housing 6. The skin material is sandwiched between a pair of clamp frames 7 that can be displaced in the vertical direction in the chamber box.

Then, as shown in FIG. 10, the supply door 8 having an airtight structure is closed, and the core material and the skin material are disposed in the chamber box integrally (the upper housing 4 and the lower housing 6 of the chamber box). The internal decompression space is an integrated space that does not appear in the figure.) The vacuum is reduced by vacuum suction, and the skin material is moved up and down by an infrared heater H (near infrared or far infrared heater). Soften by heating from both sides. The skin material is heated from both the upper and lower surfaces so that the temperature difference between the surfaces is eliminated and uniform. The lower infrared heater H can be displaced in the horizontal direction so that it can be retracted after heating.

Next, as shown in FIG. 11, the core material is relatively displaced so as to cover the covering portion of the core material with the skin material, and as shown in FIG. 12, the core material side is partitioned in the integrated decompression space of the chamber box. Specifically, as shown in FIG. 11 and FIG. 12, the clamp frame 7 is moved downward to displace the skin material downward, and is brought into contact with the table 5 on which the core material is placed so as to be arranged on the lower side. The covered portion of the core material is foreseen. As a result, in the integrated decompression space of the chamber box, the space on the side where the core material is encased and the space on the skin material side are partitioned for the first time.

Thereafter, the inside of the chamber box is opened to the atmospheric pressure from the skin material side (see FIG. 12, open holes are not shown) and pressurized to cover the core material (see FIG. 13). In addition, as a method of pressurizing the inside of the chamber box from the skin material side, the skin material side can be opened to atmospheric pressure, or further pressurized air can be supplied. By supplying compressed air, the skin material can be covered more closely with the core material.

Thereafter, the chamber box is opened as shown in FIG. 13, the supply door 8 is opened, the fan F is driven and cooled, and the core material covered with the skin material is taken out as shown in FIG. Then, the same process is repeated as the next processing cycle.

In summary, the core material 1 is supplied into the depressurizable chamber box 3 and depressurized, the skin material 2 heated and softened toward the core material 1 is displaced downward, and the interior of the chamber box 3 is pressurized. The skin material 2 is pressed against the core material 1 at a lower position so as to be covered.

Next, the usage state of the core coating apparatus of this embodiment will be described.

As shown in FIG. 12, when the pressure inside the chamber box 3 is pressed, the skin material 2 that has been displaced downward is pressed against the core material 1 at the lower position to cover the core material 1, and the core material 1 is positioned at the lower position when pressed. Therefore, there is an advantage that a large pressure strength is not required as in the prior art.

As shown in FIG. 8, when the core material 1 is supplied into the chamber box 3, the core material 1 is displaced to adjust the position. At the time of position adjustment and when the inside of the chamber box 3 is not in a pressurized state, a large pressure is not applied to the apparatus. In addition, when a pressurized air is introduced into the chamber box 3, a larger pressure is applied. However, the core material 1 receives a pressure at a lower position at the time of pressurization, and the apparatus has a simple structure and does not have such a large pressure resistance. It will be over.

Further, as shown in FIG. 11, the inside of the chamber box 3 in which the core material 1 and the skin material 2 are disposed is decompressed integrally, and the skin material 2 is relatively displaced so as to cover the covered portion of the core material 1. The core material 1 side is partitioned in the integrated decompression space of the chamber box 3, and the skin material 2 side and the core material 1 side are still partitioned when the chamber box 3 is decompressed integrally. Since there is no difference in the degree of vacuum, there is an advantage that fine adjustment for balancing the degree of vacuum is not necessary and workability is good.

In addition, as shown in FIGS. 8 and 14, since the core material is supplied and taken out from the supply door 8 of the airtight structure formed in the lower casing 6 of the chamber box, the core material is raised one by one. There is an advantage in that it does not require power to be moved or lowered and is excellent in economic efficiency.

Since the core material receives pressure at a lower position during pressurization, the pressure resistance strength is not as great as in the prior art, and can be applied to various uses in which the core material is covered with a skin material.

Sectional drawing explaining the process of supplying a core material to a chamber box in Embodiment 1 of this invention. Sectional drawing explaining the process of loading a skin material in the chamber box of FIG. Sectional drawing explaining the process of depressurizing the inside of the chamber box of FIG. 1, and heating a skin material. Sectional drawing explaining the process of displacing a skin material within the chamber box of FIG. Sectional drawing explaining the process of pressurizing the inside of the chamber box of FIG. Sectional drawing explaining the process of opening the chamber box of FIG. Sectional drawing explaining the process of taking out the core material coat | covered with the skin material from the chamber box of FIG. Sectional drawing explaining the process of supplying a core material to a chamber box in Embodiment 2 of this invention. Sectional drawing explaining the process of loading a skin material in the chamber box of FIG. Sectional drawing explaining the process of depressurizing the inside of the chamber box of FIG. 8, and heating a skin material. Sectional drawing explaining the process of displacing a skin material within the chamber box of FIG. Sectional drawing explaining the process of pressurizing the inside of the chamber box of FIG. Sectional drawing explaining the process of opening the chamber box of FIG. Sectional drawing explaining the process of taking out the core material coat | covered with the skin material from the chamber box of FIG. Sectional drawing explaining the process of setting a core material and skin material in a chamber box conventionally. Sectional drawing explaining the process of vacuum-sucking the inside of the upper and lower chamber box of FIG. 15 as an airtight state, respectively. Sectional drawing explaining the process of heating a skin material in the upper-lower chamber box of FIG. 15, and performing fine adjustment of the upper and lower vacuum degree. Sectional drawing explaining the process of making a core material contact an outer skin material within the upper and lower chamber boxes of FIG. FIG. 16 is a cross-sectional view illustrating a process of releasing the vacuum in the upper chamber box of FIG. 15 and covering the core material with the skin material. Sectional drawing explaining the process of putting pressurized air in the upper chamber box of FIG. 15, and sticking a skin material to a core material. Sectional drawing explaining the process of taking out the core material coat | covered with the skin material from the chamber box of FIG.

Explanation of symbols

1 Core material 2 Skin material 3 Chamber box

Claims (2)

A chamber box 3 that can be depressurized is provided, the core material 1 is supplied into the chamber box 3 and depressurized, and the skin material 2 heated and softened toward the core material 1 is moved downward to displace the chamber box 3. A core material coating apparatus characterized by pressurizing the inside to press and coat the skin material 2 against the core material 1 at a lower position. The core material 1 is supplied into the depressurizable chamber box 3 and depressurized, and the skin material 2 heated and softened toward the core material 1 is moved down and displaced, and the interior of the chamber box 3 is pressurized to compress the skin material. 2. A core material coating method, wherein the core material 1 at a lower position is pressed and coated .

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