JPH0446898Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field This invention relates to a powder slush mold device.

2. Description of the Related Art For example, a powder slush mold apparatus is sometimes used to manufacture relatively large resin products such as instrument panels used in automobiles.

The powder slush mold device has a powder box placed near a heating furnace, and melts and adheres resin powder in the powder box to the inner surface of the mold heated in the heating furnace.
After that, the mold is cooled with cooling water to remove the melted and adhered product from the mold (Plastic Processing Technology Handbook, published by Nikkan Kogyo Shimbun, September 20, 1975, pp. 554-565). reference).

An example of this will be explained with reference to FIG. 6. In the powder slush mold device, a cover 2 that surrounds the mold 1 from above is suspended so as to be able to rise and fall, and the inner surface of the cover 2 has a cover 2 that is directed toward the mold 1. A plurality of cooling water nozzles 3 are provided. The overturned mold 1 is cooled by the cooling water 4 injected from the cooling water nozzle 3, and the product 5 is taken out from the mold 1.

Problems to be Solved by the Invention The resin powder 6 to be supplied into the mold 1 is stored below the mold 1, and the mold 1 is overturned.
A powder box 7 is arranged to collect the excess powder 6 inside the powder box 7, but there is a problem in that cooling water flows into the powder box 7 during the cooling process, and product quality deteriorates due to the mixed cooling water. arise.

For this reason, the powder box 7 is placed on the trolley 8,
Each time a cooling operation is performed, it is necessary to move the powder box 7 to a place where it is not splashed with cooling water, which causes a decrease in work efficiency.

In addition, if the mold 1 is too cooled by the cooling water 4, it becomes difficult to peel the product 5 from the mold 1, so the cooling water 4
Hot water (about 70° C.) is often used for this purpose, but in such cases, the hot water flowing down along the mold 1 poses a danger to the demolding operation.

Furthermore, after cooling the mold 1 with the cooling water 4, it is necessary to quickly raise the cover 2 and start demolding work before the temperature of the mold 1 becomes too low. This requires large equipment, making the entire equipment expensive.

Therefore, the present invention provides a powder slush mold device that can perform operations safely and efficiently without splashing cooling water onto the powder box.

Means for solving the problem A mounting table, a moving device, and a cooling device are arranged near the heating furnace, and the mounting table is formed so that a powder box sealed with a mold can be placed thereon, and the moving device has a The mold is attached to the powder box in a sealed state so that it can be turned over, the moving device is configured to be able to move the powder box sealed with the mold onto the heating furnace and the mounting table, and the cooling device includes the mounting table. A powder box is placed on top of the powder box, and when the mold is removed from the powder box and lifted by a moving device, there is a waterproof cover that covers the powder box so that it can be opened and closed, and a cooling water that cools the mold. A cooling water jetting device is provided.

Function: The mold supported by the moving device and heated in the heating furnace is moved by the moving device to above the powder box on the mounting table, and is integrated with the powder box in an overturned state.

The powder box sealed by the mold is overturned together with the mold, and after melting and adhering the powder to the mold, the powder box is placed on a mounting table and the mold is removed.

The powder box is covered with a waterproof cover while the mold separated from the powder box is lifted by the moving device, and the product cooled from the mold by the cooling water jetting device is removed from the mold.

Embodiment Hereinafter, an embodiment of this invention will be described in detail with reference to the drawings.

1 to 5, the powder slush mold device 9 has a mold 10 at a predetermined temperature (for example, 230°C).
A heating furnace 11 is provided for heating.

The heating furnace 11 has main doors 1 on each front and side.
2 and an auxiliary door 13 are provided so that they can be raised and lowered, and the heating furnace 11
An opening 14 for receiving the mold 10 provided on the front surface of the heating furnace 11 and an arcuate guide hole 15 provided on the side surface of the heating furnace 11 are opened and closed.

A powder box 17 containing resin powder 16 is arranged on a mounting table 18 near the heating furnace 11,
It is held in a predetermined position by a positioning member 19 attached to the mounting table 18.

The powder box 17 is provided with a mounting flange 17a that matches the peripheral flange 10a of the mold 10, and the mounting flange 17a and the peripheral flange 10a are connected with the peripheral flange 10a of the mold 10 facing downward. By tightening bolts or the like, the powder box 17 can be sealed with the mold 10.

Further, between the heating furnace 11 and the mounting table 18, the mold 10 is inserted from the upper part of the powder box 17 into the heating furnace 11.
A moving device 20 is provided for transporting the inside.

The moving device 20 is provided with a bracket 22 on the upper part of the support post 21.
A rotating arm 23 is rotatably supported by a pin 24. A mold 10 is swingably supported at the tip of the rotating arm 23 by a support pin 25, and the mold 10 can be overturned at the tip of the rotating arm 23 by a drive device (not shown). has been done.

By swinging the rotating arm 23 configured in this manner by a drive device (not shown), the main door 12 and the sub door 13 are opened on the heating furnace 11 side, and the mold 10 is heated along the guide hole 15. The mold 10 is carried into the furnace 11 and moved above the powder box 17.

A waterproof cover 26 that covers the upper surface of the powder box 17 in an openable and closable manner is provided at a lower portion of the mold 10 that is carried out above the powder box 17.

The waterproof cover 26 has a vertical wall 27 on the side from which the product 5 is taken out, and has a substantially crank-shaped cross section.A cooling water pipe 28 is fixed to the upper surface of the waterproof cover 26, and a cooling water pipe 28 is attached to the cooling water pipe 28. Cooling water 4 (warm water of about 70° C.) can be sprayed upward by a cooling water jetting device 29 consisting of a plurality of nozzles. The waterproof cover 26 and the cooling jet device 29 constitute a cooling device.

The waterproof cover 26 is designed to open and close the top surface of the powder box 17 by sliding backward toward the heating furnace 11 side together with the cooling water pipe 28. It is also possible to configure it so that it rotates about the direction along which it follows.

Next, the effect will be explained.

First, as shown in FIG. 2, the main door 1 of the heating furnace 11 is opened.
2 and the sub-door 13 are opened, the rotary arm 23 is rotated to the end of the guide hole 15 of the heating furnace 11, the main door 12 and the sub-door 13 are closed, and the mold 10 carried in is heated (approximately 230°C). ) (heating process).

After heating the mold 10, the heating furnace 11
Open the main door 12 and sub-door 13 of The mounting flange 17a of the powder box 17 is fixed to the peripheral flange 10a of the powder box 17, the powder box 17 is sealed with the mold 10 as shown in FIG. The resin powder 16 in the powder box 17 is melted and adhered to the inner surface of the mold 10 (powdering process).

In this powdering process, the waterproof cover 26 is slid backward toward the heating furnace 11 by the driving device, and the rotating mold 10 and powder box 17
Interference with is prevented.

Next, after the powder box 17 is supported on the mounting table 18, it is removed from the mold 10, and the waterproof cover 26 is removed.
Slide the rotating arm 23 so that it covers the top surface of the powder box 17, and the mold 10 is above the waterproof cover 26 with the peripheral flange 10a facing upward.
Rotate.

Then, the cooling water 4 supplied from the cooling water pipe 28 is injected from the cooling water jetting device 29 onto the lower surface of the mold 10 to cool the mold 10 (cooling process). 4, the product 5 is taken out from the mold 10 as shown in FIG. 5 (demolding step).

Therefore, in the cooling process, since the powder box 17 is covered with the waterproof cover 26, the cooling water 4 does not flow into the powder box 17 and the powder inside the powder box 17 is not mixed. There is no possibility that the cooling water 4 gets mixed into the water 16 and deteriorates the product quality.

Furthermore, since the upper surface of the powder box 17 is opened and closed by sliding the waterproof cover 26, large-scale equipment is not required, and the work of moving the powder box 17 is also not necessary.

If the temperature of the mold 10 falls below a certain temperature (for example, 50°C), the demoldability of the product 5 will deteriorate, so hot water at a certain temperature (about 70°C) is used as the cooling water 4. Safe work is ensured because the liquid is sprayed upward from below the mold 10 and is not scattered toward the operator by the vertical wall 27 of the prevention cover 26.

Furthermore, the demolding operation can be performed immediately after the supply of the cooling water 4 is stopped or even while the supply of the cooling water 4 is being carried out, so that the mold 10 reaches the optimum temperature for demolding. The product 5 can be taken out at any time, the product 5 is not stuck to the mold 10, and since the mold 10 is oriented upward, demolding work is facilitated.

Effects of the invention As explained above, this invention prevents cooling water from flowing into the powder box, making it possible to maintain high product quality and providing workers with cooling water during demolding work. This prevents water from splashing and allows workers to safely and easily remove the product from the mold.

In addition, since the powder box can be fixed, there is no need to waste effort in moving a relatively heavy powder box, making it possible to improve work efficiency and reduce costs.

[Brief explanation of the drawing]

Figures 1 to 5 show an embodiment of this invention.
The figure is an overall explanatory diagram, FIGS. 2 to 5 are operation explanatory diagrams showing a heating process, a powdering process, a cooling process, and a demolding process, respectively. FIG. 6 is an explanatory diagram of a conventional technique. 4... Cooling water, 10... Mold, 11... Heating furnace, 17... Powder box, 18... Mounting table, 20...
Moving device, 26...Waterproof cover (cooling device), 2
9...Cooling water jetting device (cooling device).

Claims (1)

[Scope of utility model registration request] A mounting table, a moving device, and a cooling device are placed near the heating furnace. The moving device is configured to be able to move the powder box sealed with a mold into the heating furnace and onto the mounting table, and the cooling device includes:
When the powder box is placed on the mounting table and the mold is removed from the powder box and lifted by the moving device, there is a waterproof cover that covers the powder box so that it can be opened and closed, and a cooling device that cools the mold. A powder slush mold device characterized by being equipped with a cooling water jetting device capable of spouting water.