Internal high-pressure forming device and forming process

A technology of internal high pressure forming and internal high pressure, which is applied in the field of internal high pressure forming, can solve the problems of unsuitable thin-walled pipe fittings, etc., achieve the effect of reducing the demand for internal pressure, ensuring smooth completion, and reducing the requirements for feeding and forming elongation

Active Publication Date: 2015-07-01
NINGBO TRIZ AUTOMATIC EQUIP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, the process disclosed in the above-mentioned patent is not applicable to thin-walled pipe fittings at all

Method used

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  • Internal high-pressure forming device and forming process
  • Internal high-pressure forming device and forming process
  • Internal high-pressure forming device and forming process

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Embodiment Construction

[0023] The present invention will be further described in detail below with reference to the embodiments of the accompanying drawings.

[0024] Such as figure 1 As shown, this embodiment is a kind of internal high pressure forming equipment, including a frame 1, which is equipped with a clamping press 2, a booster pump connected to an external water tank (not shown in the figure), an internal high pressure mold 3 and a plurality of feeding cylinders 4 for feeding. The internal high-pressure mold 3 includes an upper mold 31 and a lower mold 32, a horizontal worktable is formed on the frame, the lower mold is fixedly placed on the horizontal platform, and the upper mold is connected to the bottom of the press And it can press and close the mold with the press. Cavities are respectively opened in the upper mold and the lower mold. When the upper mold and the lower mold are closed, the cavity of the upper mold and the lower mold can form a mold cavity 5 consistent with the outli...

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Abstract

The invention discloses an internal high-pressure forming device and a forming process, and aims to provide a process and matching devices capable of forming pipes under the condition of relatively low pressure. A pipe billet is firstly formed into a pipe shape with a small R (small radian of a bent portion) by the aid of force of a press fitting die of a press machine and liquid pressure in a pipe, and forming is repeated for many times if necessary until the pipe shape is completely close to a die cavity. The press machine is driven to completely close an upper die and a lower die, internal pressurization is continued after the dies are completely closed, and the pipe shape with the small R is expanded into a pipe shape with a large R (large radian of the bent portion) by the aid of internal pressure. Besides, liquid flow channels are arranged in plugs on two sides of the die, double-end water injection can be realized, and pressurizing efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of internal high pressure forming, in particular to an internal high pressure forming equipment and a process method for forming automobile pipe fittings, pipe beams and the like by using the equipment. Background technique [0002] Internal high pressure forming, also called hydroforming or hydroforming, is a material forming process that uses liquid as a forming medium to achieve the purpose of forming parts by controlling internal pressure and material flow. [0003] This process has been widely used in the production process of automobile pipe fittings. For example, in the Chinese invention patent No. 201010522779.5, a set of internal high pressure forming equipment manufactured by Jilin Province Yuanlongda Tooling Equipment Co., Ltd. is disclosed. , including an upper seat, a slider and a hydraulic cylinder arranged on the upper seat, the extension rod of the hydraulic cylinder is connected with the sli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D26/049B21D26/039B21D26/047B21D26/045
Inventor 陆志伟
Owner NINGBO TRIZ AUTOMATIC EQUIP
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