Continuous conveyor type peen vulcanizing device and method

Abstract

The present invention provides a continuous conveyor type peen vulcanizing device and method, capable of keeping postures of cylindrical metal products such as screw spring and implementing stable peen vulcanization treatment. Inside a cavity (1) having a feed strobe (2), a chain conveyor (5) having an accessory (51) for pressing ends (W1) of a product (W) to be processed is provided, two rotating rollers (4) having drive sources are arranged on two sides of the chain conveyor in parallel, the rotating rollers (4) are formed in cylinder shapes capable of rotating along an identical direction, such that the product (W) to be processed is rotated and simultaneously is conveyed. A centrifugal type projection device (6) is arranged on the upper side of the cavity (1), so as to perform peen vulcanization to a whole surface of the product (W) to be processed without leakage. Projection material is recovered by a lower spiral conveyer (7), and is conveyed to the upper side of the cavity by a bucket elevator (8) to reuse.

Description

technical field [0001] The present invention relates to a continuous conveyor-type shot peening device and a spray peening device for performing shot peening treatment on a cylindrical metal product such as a coil spring and accelerating the projected material projected material for the purpose of improving the fatigue strength of the metal product. Pellet hardening method. Background technique [0002] Conventionally, the apparatus related to the shot peening treatment used for shot peening cylindrical metal products such as coil springs, as described in Patent Document 1, uses The spring holding and fastening device holds from both ends of a processed product, and the processed products are subjected to shot peening treatment one by one. [0003] In addition, as described in Patent Document 2, the coil spring constituting the product to be processed is mounted on both the long roller for rotation and the conveyor belt, and the coil spring is rotated around the axis by the...

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Problems solved by technology

[0006] However, in the device of Patent Document 1, since it is a mechanism that handles the processed products one by one, the process of conveying the processed product to the holding and fastening device, holding and releasing it, and carrying it out from the spring holding and fastening device is required. And institutions, in addition to the increase in equipment costs, also require a lot of cycle time spent on processing

In addition, in the apparatus of Patent Document 2, although the processed product can be subjected to shot peening treatment while continuously conveying the processed product by the conveyor belt, a The rotating long roller that rotates the product to be processed in the axial direction is provided with a conveyor belt that conveys the product to be processed in the direction of travel on the other side. Because of the frictional force acting in the opposite direction, there is a problem that the processed product being conveyed while rotating cannot fix the conveying posture, and the projected material accelerated at a high speed cannot be fully impacted. In addition, the long rollers for rotation and the conveyor belt may be caused Restoration of facilities such as shedding, clogging of processed products in the device, and pulleys that bite into conveyor belts, etc.

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