JPS5938016A - Supplying and discharging device of cooling water for mold - Google Patents

Abstract

PURPOSE:To prevent the pollution of working environment by scattering of cooling water as well as to simplify the operation of supplying and discharging cooling water by a method in which an air cock for water drain is provided additionally to a cooling water supply cock and a cooling water return cock, and all of the cocks are switched by one-action operation. CONSTITUTION:When cooling molds 1, a handle 20 is turned toward the cooling side and locked by a handle stopper under the condition that a connecting bar 19 is in the state of full line. A water supply cock 15 and a return cock 16 are then opened to continuously supply water to the molds 1, and an air cock 13 for water drain and a water drain cock 14 are closed. When exchanging molds 1, the handle 20 is turned toward the water drain side and locked by the handle stopper, whereupon the water supply cock 15 and the return cock 16 are closed to stop the supply of water, the air cock 17 and the water drain cock 18 are opened to supply air into the molds 1, and cooling water in the molds 1 is discharged from the water drain pipe 14. Since switching operations can be made by one-action operation and the needs for detaching and attaching of couplers are eliminated, no scattering of cooling water toward the molding machine side occurs.

Description

[Detailed description of the invention] This relates to a mold cooling water injection and drainage device that injects water from one port and returns from the other port, and drains the cooling water in the mold with air when replacing the mold. The purpose of this is to simplify the work by allowing one-touch operation to switch between injecting cooling water into the mold and discharging the cooling water from the mold.

Conventional mold cooling water injection and drainage devices open the cooling water injection cock 2 and the cooling water return cock 8 when cooling the mold l, as shown in Fig. 1, but when replacing the mold, the inside of the mold Since there is no cooling water drainage facility, remove the couplers of the cooling water injection cock 2 and the cooling water return cock 8, and connect the coupler 4a of the air hose 4.
Connect to the coupler 2a of the cooling water injection cock 2, open the air switching cock 5, and connect the air hose so that the cooling water inside the mold 1 can be drained out of the mold 1 by the pressure of the air. The work is troublesome and time consuming, and the cooling water in the mold l is splashed onto the side of the molding machine by the coupler on the hose side, creating a poor working environment.

In the present invention, an air cock for cooling water drainage is also attached outside the cooling water injection cock and return cock, and the four cocks are integrated with a connecting rod to inject cooling water into the mold and drain the cooling water inside the mold. This eliminates the drawbacks of the conventional method by making it possible to switch between them with a one-touch operation.

An embodiment of the present invention shown in FIGS. 2 through 4 will now be described in detail. IO is a cooling water centralized control unit for mold l, 11 is a cooling water injection pipe, 12 is a cooling water return pipe, 18 is a drainage air pipe, ■4 is a drainage pipe, cooling water injection cock 15, cooling water return cock 16, cooling water drainage air cock 17 and cooling water drainage cock 8 are connected by one connecting rod 19.

20 can be rotated 90 degrees by the handle of the connecting rod 19, and a stopper is provided at the rotating end.

Next, the effect will be explained. When cooling the mold l, when the handle 20 is rotated toward the cooling side, the connecting rod 19 is in the state shown by the solid line in FIG. 4. Lock the handle 20 in this position with the handle stopper. At this time, the cooling water injection cock 5 and the cooling water return cock 16 are opened, and cooling water is continuously injected into the mold l as shown by the solid line in FIG. Meanwhile, at the same time, the drain air cock 13 and the drain cock 14 are closed.

When replacing the mold l, turn the handle 20 backwards to the drainage side.
Rotate the handle once and lock it in this position with the handle stopper.

At this time, the cooling water injection cock 15 and the cooling water return cock 16
is closed and water injection into the mold l is stopped. On the other hand, for draining at the same time - air cock 17 and drain cock 18
is opened and air enters the mold 1 as shown by the dotted line in Figure 4.
Cooling water in the mold l is drained from a drain pipe 14.

According to the present invention, it is possible to switch between cooling the mold with cooling water and draining the cooling water inside the mold with a single touch of the nozzle rotation. Since there is no need to attach, detach, or connect the coupler, the working environment can be improved without cooling water splashing onto the side of the molding machine.

[Brief explanation of drawings]

Fig. 1 is a perspective view of a conventional device, Fig. 2 is a perspective view of an embodiment of the present invention, Fig. 3 is a partially cutaway perspective view of the cooling water central control unit of Fig. 2, and Fig. 4 is a perspective view of an embodiment of the present invention. It is a top view explaining operation. ■...Mold, IO...Cooling water centralized control unit, 1
1...Cooling water injection pipe, 12...Cooling water return no.ζ
Eve, 18...Drainage air pipe, ■4...Drainage pipe, 15...Cooling water injection cock, 16...Cooling water return cock, 17...Drainage sub arco tank, 18.
...Drain cock, 19...Connecting rod, 20...No. Patent applicant Nippon Plast Co., Ltd. Procedural amendment (voluntarily submitted) September 211, 1980 Commissioner of the Japan Patent Office Kazuo Wakasugi 1 Indication of the case 1983 Patent application No. 148849 2 Name of the invention Mold cooling water Pour and drain device 3 Address of person making corrections and corrections: 119-22 Aoshima, Fuji City, Shizuoka Prefecture. Relationship to the incident Patent applicant name: Nippon Plast Co., Ltd. / Attorney Tung. 5 Date of amendment order G Drawing to be amended t Contents of amendment Figure 8 of the drawing will be amended as shown in the attached sheet. Figure 3

Claims (1)

[Claims] It has a cooling water injection cock, a cooling water return cock, an air cock for cooling water drainage, and a cooling water drainage cock, and each cock is connected by a connecting rod, and the connecting rod can be moved to a cooling position and a draining position. In the cooling position, the cooling water injection cock and the cooling water return cock are opened, and at the same time the cooling water drain air deck and the cooling water drainage cock are closed, and in the drainage position, the cooling water injection cock and the cooling water return cock are closed. A mold cooling water pouring and draining device which opens a cooling water drain air cock and a cooling water drain cock at the same time as closing a return cock.