JP3148406B2 - Hood for spray device of die casting machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hood for a spray device of a die casting machine.

[0002]

2. Description of the Related Art Conventionally, a hood provided in a spray device of a die-casting machine has been disclosed in Japanese Unexamined Utility Model Publication No. 2-1273.
No. 65 is known.

This will be described with reference to FIG.

The hood 1 is formed in a rectangular box shape having an open lower surface, and an opening 2 is provided on the upper surface. A shutter 3 is provided in the opening 2, and the shutter 3 opens and closes the opening 2 by a cylinder 4. The spray head of the spray device (not shown) has a shutter 3
Is opened and inserted into the hood 1 through the opening 2 and the spray head is inserted, the air curtain device 5 is driven to form an air curtain in the opening 2, and mist from the spray head is discharged outside the hood 1. So that it does not scatter.

Reference numeral 6 denotes a mist exhaust port, and an exhaust duct is connected to the exhaust port 6.

When the spray device is not used, the spray head is taken out of the opening 2, the air curtain device 5 is stopped, and the opening 2 is closed by the shutter 3.
To close.

[0007]

However, in the above-mentioned hood 1, even if an air curtain is formed by the air curtain device 5 and the release agent is sprayed by the spray device, the mist is completely scattered outside the hood 1. It is difficult to prevent this, and furthermore, since the opening / closing device for the opening 2 and the air curtain device 5 are required, there is a problem that the structure becomes complicated.

SUMMARY OF THE INVENTION In view of the foregoing, an object of the present invention is to provide a hood for a spray device that can easily perform maintenance of the spray device without mist being scattered outside.

[0009]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems of the prior art, the present invention relates to a hood for a spray device provided in a die casting machine for preventing mist from being scattered by the spray device. ,
A fixed hood having an opening through which the spray head of the spray device can pass, and a swiveling hood which covers the spray device and closes or opens the opening to the opening of the fixed hood as the spray device turns. Things.

[0010]

In the above hood for a spray device, the turning hood also turns with the turning of the spray device to open and close the opening of the fixed hood. Therefore, when the swiveling hood is in close contact with the opening of the fixed hood, the spray device is covered with the hood. When the swiveling hood is swiveled to open the opening of the fixed hood, almost half of the spray device is exposed outside the hood.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of a hood (hereinafter referred to as "hood") 10 for a spray apparatus according to the present invention will be described below with reference to FIGS.

[0012] The mold clamping portion 12 of the die casting
A fixed die plate 13, a movable die plate 14, a release agent spray device 15 and a hood 10 are provided.

The fixed die plate 13 is provided on a base 16, and the movable die plate 14 is provided with a tie bar 17.
And is movable with respect to the fixed die plate 13.

The spray device 15 has a support body 15a.
Is fixed on a swivel 8 pivotally mounted on the upper part of the fixed die plate 13, and is located at the position P shown in FIG. 2 when spraying the release agent, and Q when performing maintenance. The actuator is turned to the position by an actuator (not shown).

The hood 10 is composed of a fixed hood 18 and a swiveling hood 19, and the fixed hood 18 is formed in a box shape having a protruding portion 20 with one end protruding so as to cover the spray device 15, and a lower portion. One end is fixed to the upper part of the fixed die plate 13. A rectangular opening 21 is formed on the side of the swiveling hood 19 (left side in FIG. 1) of the protruding portion 20 that covers the spray device 15, and the opening 21 is formed through a packing 22 in the opening 21. Are coming into close contact.

The swiveling hood 19 is formed in a box shape having the same shape as the opening 21 with the opening 21 side of the fixed hood 18 being open, and a protruding semi-cylindrical portion 23 is provided at a portion covering the spray device 15. Is formed. The lower end of the revolving hood 19 has an axis center of the semi-cylindrical portion 23,
Is fixed to the revolving base 8 so as to substantially coincide with the revolving center 24, and revolves with the revolving of the spray device 15, so that the opening 21 of the fixed hood 18 is opened and closed. Also, the flange 25 of the swiveling hood 19 is
5 is located inside the flange 26 of the fixed hood 18 as shown in FIG. 5, and the packing 22 is mounted outside the flange 25 of the swing hood 19 as shown in FIG. I have. On the other hand, as shown in FIG. 6, the flange 25 of the turning hood 19 is located outside the flange 26 of the fixed hood 18 in the upper portion from the turning center 24 shown in FIG. A packing 22 is mounted on the fixed hood 18 side of the hood.

Reference numeral 27 denotes an exhaust duct. The exhaust duct 27 is provided with an exhaust fan (not shown).

Next, the operation of the hood 10 will be described.

When the spray device 15 is turned and the spray head 28 of the spray device 15 is lowered between the fixed mold 29 and the movable mold 30, the turning hood 19 turns with the turning of the spray device 15, and the fixed hood 19 turns. Since the fixed hood 18 and the swiveling hood 19 are kept airtight by the packing 22, the airtightness is maintained. Thereafter, by operating the air blower and applying the release agent from the spray head 28 to the cavity surfaces of the fixed mold 29 and the movable mold 30, the mist from the spray head 28 passes through the hood 10 and the exhaust duct 27. It is discharged to the outside.

When the maintenance of the spray device 15 is performed, the spray head 28 is fixed to the fixed hood 18.
When the spray device 15 is turned in the direction of the Q position shown in FIG. 2 by pulling up to the vicinity of the opening 21, the turning hood 19 also turns, and the spray device 15 is exposed from the opening 21 to the outside of the fixed hood 18. Maintenance of the spray device 15 can be performed without removing the hood 10.

[0021]

As described above, the hood for the spray device of the die casting machine according to the present invention comprises a fixed hood,
A swivel hood that covers the spray device and is in close contact with the opening of the fixed hood together with the swivel of the spray device, or has a swivel hood that opens the opening. Scattering can be prevented. When the opening is opened by turning the swiveling hood, the spray device is exposed to the outside of the hood, so that there is an excellent effect that maintenance of the spray device can be performed without removing the hood.

[Brief description of the drawings]

FIG. 1 is a side view showing one embodiment of a hood for a spray device of the present invention.

FIG. 2 is a plan view of FIG. 1;

FIG. 3 is a front view of FIG. 1 viewed from the direction of arrow C;

FIG. 4 is a detailed view of a close contact portion between the fixed hood and the turning hood.

FIG. 5 is a sectional view taken along line AA of FIG. 4;

FIG. 6 is a sectional view taken along line BB of FIG. 4;

FIG. 7 is a perspective view of a conventional hood.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Hood 3 Shutter 5 Air curtain device 10 Hood 15 Spray device 18 Fixed hood 19 Swiveling hood 22 Packing

Continuation of the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B22D 17/20 B05B 15/04

Claims (1)

(57) [Claims] 1. A spray device hood provided in a die casting machine for preventing mist from being scattered by a spray device, wherein the spray device hood has a fixed hood having an opening through which a spray head of the spray device can pass. A swiveling hood that covers the spraying device and closes or opens the opening of the fixed hood when the spraying device is swiveled.