JPS5949187B2 - Post-vulcanization treatment method and device for large hoses - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for treating a hose, particularly a large flanged hose used for transporting oil, after vulcanization.

Generally, in the manufacturing process of this type of large hose, after the vulcanization process is completed (iEyo curing cloth unwinding process,
11) Processes such as a mandrel drawing process and (iii) a pressure test process are performed.

Conventionally, the method for performing such post-processing is the above (iL).
ii), (The song process is performed on separate machines, so after one process is finished, it is necessary to move the hose between each machine to move on to the next process, and it is necessary to attach the hose to the machine each time. , requiring work such as removal, which not only had low work efficiency but also had safety problems.

The present invention is a large hose that can perform the unwinding of the vulcanizing cloth after vulcanization of the large hose, the pulling out of the mandrel, and the pressurization test of the hose at the same location, improving workability and safety. The object of the present invention is to provide a post-vulcanization treatment method and apparatus.

Normally, large hoses are manufactured by sequentially wrapping the required materials such as inner layer rubber, reinforcing or wire, outer rubber, buoyant sponge, etc. around the surface of a mandrel made from a steel pipe, and applying the outermost wave. Wrap the curing cloth with high tension and vulcanize it in a vulcanizing can.

Therefore, the hose supplied from the flow can has the hose body and the mandrel integrated into one body, and the vulcanizing face is wound around the outer layer of the hose.

Post-treatment after vulcanization requires at least unwinding the vulcanization ticket, pulling out the mandrel, and pressurizing the hose.

Hereinafter, embodiments of the present invention will be described in detail based on the drawings.6 Figure 1 shows a state in which a hose after vulcanization is set in the device of the present invention, where 1 is a headstock, 2 is a tailstock, 3 is a mandrel, and H is a hose after vulcanization.

The hose H consists of a hose body 4 and flanges 5a and 5b provided at both ends of the hose body 40.

A moving vehicle 6 is provided on the tail stock 2 and is configured to move on rails 7.

8 is a fixing lever for fixing the tail stock 2 at a predetermined position, 9 is a winch wire, and 10 is a mandrel chuck.

A pressure head 11 is rotatably provided on the head stock 1 (FIG. 2).

The pressure head 11 has at one end a cylindrical part 12 that accommodates the support part 3a of the mandrel 3, and has at the other end a shaft part 14 having a flow path 13 communicating with the inside of this cylindrical part 12. .

A rotary joint 15 and a hose 16 are provided at the tip of the shaft portion 14 .

Further, a sprocket 17 is fixed to the shaft portion 14, and the pressure head 11 is rotated via a motor 18, a reduction gear 19, and a chain 20.

A flange portion 21 is formed at the tip of the cylindrical portion 12, and an annular adapter 22 is fixed to this flange portion 21 with bolts 23.

This adapter 22 is fixed to the flange 5a of the hose with bolts 24.

It is preferable to provide gaskets between the flange portion 21 and the adapter 22 and between the adapter 22 and the flange 5a to prevent fluid leakage.

Next, a method of performing post-vulcanization treatment using the above-mentioned apparatus will be explained.

The hose H that has been vulcanized is set in the device together with the mandrel 3.

That is, one support part 3a of the mandrel 3 is connected to the cylindrical part 12.
At the same time, the flange 5a is fixed to the adapter 22 with bolts 24, and the other support part 3b of the mandrel 3 is fixed with a mandrel chuck 10.

In this case, since the tail stock 2 can be moved on the rail γ, it can be moved according to the length of the mandrel during setting and fixed at a predetermined position using the fixing lever 8.

Once the hose has been set, the vulcanization ticket is unwound.

This step is carried out by rotating the mandrel 3 and hose H by the motor 18 and winding up the face of the card by hand or by machine.

Next, a mandrel drawing process is performed.

That is, an appropriate number of carts 25 are inserted into the lower surface of the hose H excluding the ticket surface as shown in FIG. 1, and the winch wire 9 is pulled to the right in FIG. 1 by a tensioning device such as a winch (not shown). At the same time, pressure fluid is supplied from the port 16 to apply pressure to the left side surface 3c of the mandrel 3 (the vulcanizing steam port on the side surface of the mandrel is closed by a stopper 26).

As a result, the mandrel is pulled out from the hose H, and the hose H is supported on the trolley 25.

Next, a pressure test step is performed.

That is, as shown in FIG. 3, attach the blind plate 27 to the right flange 5b with bolts 28, and then attach the hose 16.
Pressure fluid is supplied from

As described above, according to the present invention, the unwinding of the vulcanization ticket, the pulling out of the mandrel, and the pressure test can be performed in one place without moving the hose. Since there is no need to attach or remove the product, it has the effect of significantly improving work efficiency and safety.

[Brief explanation of the drawing]

Fig. 1 is a side view of the hose after vulcanization attached to the device according to the present invention, Fig. 2 is a vertical sectional side view of the main parts of the same, and Fig. 3
The figure shows a side view during a pressure test. 1... Headstock, 2... Tail stock, 3... Mandrel, 3a, 3b...
... Mandrel support part, 11 ... Pressure head, 12 ... Cylindrical part, 13 ... Channel,
17...Sprocket, 18...Motor, H...Hose, 5a, 5b...Flange.

Claims (1)

[Claims] 1. A method for treating a hose after being vulcanized on a mandrel, comprising: (a) inserting one end of the mandrel into a pressure head rotatably attached to a headstock and vulcanizing the hose; sealingly coupling a flange at one end to the pressure head and supporting the other end of the mandrel to a tailstock; (b) rotating the pressure head to rotate the hose and wrapping it around the hose; (C) A step of applying fluid pressure to the side surface of the mandrel with a pressure head and simultaneously pulling the tail stock in the longitudinal direction of the hose to pull out the mandrel from the hose; (d) A method for post-vulcanization treatment of large hoses, comprising the steps of: sealing the other end of the hose, then supplying fluid from a pressure head and performing a pressure test; 2. A headstock that supports one end of a mandrel passing through the vulcanized hose, a tailstock that supports the other end of the mandrel, and a cart on which the hose is placed, and the headstock includes: A cylindrical part for inserting the support part of one end of the mandrel is rotatably provided at one end, and a shaft part having a flow path leading to the inside of the cylindrical part is rotatably provided at the other end. A rotation mechanism for rotating the pressure head is provided, a flange portion is formed on the opposite side of the shaft portion of the cylindrical portion, an adapter is provided on the flange portion to connect to the flange portion of the hose, and the tail stock includes: A vulcanization post-processing device for a large hose, characterized in that a moving vehicle is provided so as to be able to approach and move away from a headstock, and a chuck is provided for fixing a supporting portion at the other end of a mandrel.