Blocking forging device and forging process for special-shaped fuel injector body

Abstract

The invention discloses a blocking forging device for a special-shaped fuel injector body. The device comprises an upper mold and a lower mold for blank forming, wherein the lower mold comprises a lower mold sleeve, and a base is arranged inside the lower mold sleeve; the upper end of the base is provided with a sliding mold which is in sliding connection with the inner side face of the lower moldsleeve, and the lower end of the base is provided with movable ejection rods capable of ejecting the sliding mold out; and the sliding mold is composed of a left half mold and a right mold half whichare oppositely arranged. Forming of a cavity is achieved by the oblique sliding of the left half mold and the right half mold, and under the action of self-locking angles, the space positions of thehalf molds are kept stable without additional mechanism maintenance; and a forged piece can be simultaneously demolded from a shape hole of the base and the cavity of the half molds during ejection, so that one-step blocking forging forming of the fuel injector body is achieved, the forging process and the mold structure are simplified, mold parts are reduced, the parting surface is flat and freeof step surfaces, the unbalance loading phenomenon does not exist during forging, and the forming force is lower. The invention further provides a blocking forging process for the special-shaped fuelinjector body, and the blocking forging device is included in the blocking forging process.

Description

technical field [0001] The invention relates to the technical field of forging a fuel injector body, in particular to a block forging device for a special-shaped fuel injector body and a forging process thereof. Background technique [0002] The fuel injector body is a part of the fuel injection system of the internal combustion engine that atomizes the fuel and distributes it in the combustion chamber to mix with the air. , so as to obtain the forging technology of near-net size precision forgings without flash. [0003] The existing injector body production adopts the floating formwork type closed forging process, which requires the use of a special floating formwork, and the parting surface is a stepped surface, and the clamping force of the upper and lower molds needs to be provided by an additional elastic device. And ensure that its strength is greater than the clamping force but less than the downforce of the forging machine. The overall structure is complex and the ...

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Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the existing fuel injector body production adopts the floating formwork type closed forging process, which needs to use a special floating formwork, and the parting surface is a step surface, and the mold clamping force of the upper and lower molds requires Provided by an additional elastic device, and ensure that its force is greater than the clamping force but less than the downforce of the forging machine, the overall structure is complex and the reliability is low, and due to the asymmetrical shape of the fuel injector body, the upper and lower molds will make it difficult to forge during forging. Unbalanced load, the ejector rod is easy to be bent and damaged by the partial load, and a block forging device and process for a special-shaped fuel injector body is proposed

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