Punch of O-shaped rubber ring

Abstract

The invention discloses a punch of an O-shaped rubber ring, which comprises a fixing seat and a mounting seat, wherein the fixing seat is fixedly connected with the mounting seat by bolts; the interiors of the fixing seat and the mounting seat are step-shaped; a punching head is inlaid in the fixing seat; the interior of the punching head is hollow; one end of the punching head stretches out of the fixing seat; an ejection pin is mounted at the other end of the punching head, and is divided into a front end and a big head end; the front end of the ejection pin is mounted in the hollow interior of the punching head and extends to the end part of the punching head; and a spring is arranged at the big head end of the ejection pin. According to the scheme of the punch, the punching head is mounted in the fixing seat, the fixing seat is connected with the mounting seat, and the punching head is mounted on a machine during processing for punching a material, and pressed down, and directly punches the material into an O shape without welding, so that the quality of the rubber ring is improved greatly, a welding procedure is saved, and the production efficiency is improved.

Description

technical field [0001] The invention relates to a stamping die, in particular to an O-shaped rubber ring punch. Background technique [0002] O-shaped rubber ring is an annular rubber ring with a circular cross section, which is mainly used for mechanical parts to prevent the leakage of liquid and gaseous media under static conditions. In some cases, it can also be used for axial reciprocating motion and low-speed rotary motion. According to different conditions, different materials can be selected to adapt to it. It is widely used, but when preparing O-shaped rubber rings, the technology for processing its joints has not been improved, and the effect of the joints is not good. There are two existing processing methods: 1. Heat bonding: the extruded rubber strip is positioned in the joint mold, and the heated rubber material with a certain fluidity is injected into the joint position of the product through the transfer hole or the transfer groove, so that Make the product b...

AI Technical Summary

Problems solved by technology

[0002] O-shaped rubber ring is an annular rubber ring with a circular cross section, which is mainly used for mechanical parts to prevent the leakage of liquid and gaseous media under static conditions. In some cases, it can also be used for axial reciprocating motion and low-speed rotary motion. According to different conditions, different materials can be selected to adapt to it. It is widely used, but when preparing O-shaped rubber rings, the technology for processing its joints has not been improved, and the effect of the joints is not good. There are two existing processing methods: 1. Heat bonding: the extruded rubber strip is positioned in the joint mold, and the heated rubber material with a certain fluidity is injected into the joint position of the product through the transfer hole or the transfer groove, so that Make the product butt joint, and connect the two joints with the bonding material used for the joint by heating (pressurizing at the same time); Apply glue to the two incisions respectively, and connect the two joints through the jig. After a few minutes, they can be bonded without heating and pressure. The bonding material for the joint does not need heating and pressure, coating After that, it can be cured instantly, and the two joints are connected; the disadvantage of thermal connection: it needs to be injected into the product through the transfer hole or the transfer slot during the processing, so that the transfer hole or the transfer slot is wasted to a certain extent. A certain amount of rubber material is used, and the injection hole makes the product always have a glue injection point on the appearance, which affects the appearance of the product; in addition, the joint part of this method is solid, and it cannot meet the requirements when the pressing force is small, and its The joint strength is high, and the joint efficiency is low, which requires the assistance of joint equipment and more complicated fixtures; the disadvantage of cold joint: the joint strength of cold joint is not as good as that of hot joint, although the joint efficiency is high, no joint equipment is needed, and the joint fixture is relatively simple , but its bonding strength is not high, and the glue used has the problem of hardening and not rebounding after curing. Therefore, the existing technology still needs to be improved and developed.

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