JPS5815733Y2 - Piston valve for tire vulcanizer - Google Patents

Description

[Detailed explanation of the invention] When assembling a piston valve for a conventional tire vulcanizer,
The valve housed inside the cylinder is fitted with an elastic spring to resist high pressure, and a screw hole protruding from the cylinder is inserted into the screw hole provided on the inner surface of the cylinder cover plate to fit it tightly. Therefore, when installing the piston valve,
When installing or replacing a spring, which has strong elasticity, the spring must be compressed and replaced, which requires special tools, special skill, and a great deal of labor and time. There were drawbacks such as having to stop the process, which significantly hindered work efficiency.

However, the present invention aims to eliminate the above-mentioned drawbacks, and eliminates the disadvantages of mounting the spring while pressing and compressing it, and a piston plate is provided at the bottom of the cover plate. forming a protruding tube on its lower surface;
The protruding tube has a tube hole formed on three sides, and the outer side is three-sided so as to fit into the hole, and a connecting rod with a screw hole bored on the inner surface is formed at the tip of the piston rod, and inside the protruding tube. When assembling a piston valve for a tire vulcanizer, by fitting the connecting rod and forming it so that it is tightly connected with bolts, etc., and attaching a spring to the peripheral edge of the piston rod on the lower surface of the piston plate, when assembling a piston valve for a tire vulcanizer, it is possible to Inserting the three sides of the connecting rod provided in the tube into the three sides of the protruding pipe hole and tightening them with bolts is an extremely simple operation that requires special tools, skilled technique, or a large amount of effort. It can be installed reliably and quickly without requiring labor or time. Moreover, by forming three sides on the protruding pipe and connecting rod, assembly operation is easy, and the formation of three sides makes it possible to completely rotate. It is possible to reliably prevent the tightened parts from loosening, and the cylinders can be connected quickly and tightly by simple operations such as joining the flanges and tightening the required parts with bolts, etc. In addition, since the structure is simple, it can be manufactured efficiently and at low cost. As shown in FIG. 1, a piston plate 4 is provided at the lower part of the upper cylinder body 1 and the cover plate 2, from which a protruding tube 3 can be released. 5, a connecting rod 8 with three sides 6 on the outside and a screw hole 7 bored in the inner surface is formed at the tip of the piston rod 9, and the connecting rod 8 is inserted into the inner surface of the protruding tube 3. and connecting rod 8 inner screw hole 7
Then, the piston plate 4 is tightened with nuts, bolts 10, etc. from the upper part of the piston plate 4, and the protruding pipe 3 on the lower surface of the piston plate 4 is tightened.
and a spring 11 is installed around the piston rod 9,
A piston valve for a tire vulcanizer, in which a flange 13 formed at the lower end of a cylinder upper cylinder body 1 and at the upper end circumference of a lower body 12 is airtightly joined, and required parts are tightly fixed with nuts, bolts 14, etc. It is.

With this structure as described above, when assembling the piston valve, the three surfaces 6 of the connecting rod 8 are fitted into the three surfaces 5 of the protruding tube 3 formed on the lower surface of the piston plate 4, and the connecting rod 8 is assembled. If the threaded hole 7 bored in the inner surface of the cylinder is tightened with a nut, bolt 10, etc. from the upper surface of the piston plate 4, it should be installed in the protruding pipe 3 provided at the lower part of the cylinder cover plate 2 and the tip of the piston rod 9. A special tool is used that resists the elasticity of the spring 11 and presses and compresses it to attach it, such as a conventional spring 11 that can be tightly tightened by tightening the connecting rod 8. or,
without requiring skilled techniques or a great deal of effort and time.
It is possible to assemble and disassemble quickly and reliably in an extremely stable state, which has a great effect on work efficiency, and
In addition, by forming a three-sided surface 5 on the inner surface of the protruding tube 3, and fitting and tightening a connecting rod 8 having a three-sided surface 6 on the outside, rotation is completely prevented and loosening of the tightened portion is ensured. In addition, due to the three-sided formation, assembly and disassembly operations can be performed extremely easily and quickly in the event of failure, spring replacement, inspection, etc. Furthermore, when forming the cylinder, simply The flange 13 formed on the lower end periphery of the cylinder upper body 1 is airtightly joined, and a part of the flange 13 is attached to the bolt 1.
It is a device that has many features and effects, such as being able to be tightly connected by tightening with 4 or the like, and being able to be manufactured efficiently and at low cost due to its simple structure.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway front view of the embodiment of the present invention, and FIG. 2 is a cross-sectional view taken along the line A--A in FIG. 1 and an enlarged view of essential parts.

Claims (1)

[Scope of utility model registration request] A piston plate having a protruding tube formed on the lower surface is provided at the lower part of the cylinder upper cylinder body cover plate, and the protruding tube has three sides on the inner surface and three sides on the outside so as to fit into the three sides, A connecting rod with a screw hole drilled on the inner surface is formed at the tip of the piston rod, the connecting rod is inserted into the inner surface of the protruding tube, and a bolt, etc. is inserted from the top surface of the piston plate into the screw hole provided on the inner surface of the connecting rod. Insert and tighten the piston plate, attach a spring to the protruding pipe on the lower surface of the piston plate and the circumference of the piston rod, and attach a collar to the lower end of the upper cylinder body and the upper edge of the lower body. A piston valve for a tire vulcanizer, characterized in that the flange is joined and firmly fixed.