Title:
HIGH-PRESSURE LIQUID-FILLED FORMING MOULD FOR BELLOWS
Document Type and Number:
WIPO Patent Application WO/2019/174209
Kind Code:
A1
Abstract:
Disclosed is a high-pressure liquid-filled forming mould for a bellows, the mould comprising a mould core (1), an upper pressing body (2) provided with an upper recess (101) at the bottom, and a lower pressing body (3) provided with a lower recess (102) at the top, wherein after the upper pressing body (2) and the lower pressing body (3) are assembled, an accommodating chamber with a rectangular cross-section is formed between the upper recess (101) and the lower recess (102); and plug push rod assemblies (4) are respectively mounted on left and right sides of the lower recess (102). After a pipe placed on a horizontal recess is compressed by the plug push rod assemblies (4), a high-pressure liquid is filled, so that the pipe is compressed, from the periphery and from a bottom surface, against a side wall of a forming recess (111) in a forming mould core (11), so as to form a corrugated shape. Since compression is carried out by the high-pressure liquid, an aluminum alloy plate is under substantially equal pressure at various positions, and thus, cracking, invisible damage, scratches, etc. caused by an excessive local stamping force can be eliminated, thereby greatly improving the quality of products.
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Inventors:
LI JINGMING (CN)
OUYANG LING (CN)
TANG LIPING (CN)
OUYANG LING (CN)
TANG LIPING (CN)
Application Number:
PCT/CN2018/105761
Publication Date:
September 19, 2019
Filing Date:
September 14, 2018
Export Citation:
Assignee:
FOSHAN NANHAI XINGDI MACHINERY MFG CO LTD (CN)
HENAN XINGDI FORGING EQUIPMENT MFG CO LTD (CN)
HENAN XINGDI FORGING EQUIPMENT MFG CO LTD (CN)
International Classes:
B21D26/047
Foreign References:
| CN108326109A | 2018-07-27 | |||
| CN107088602A | 2017-08-25 | |||
| CN107088602A | 2017-08-25 | |||
| CN207057354U | 2018-03-02 | |||
| CN107588252A | 2018-01-16 | |||
| JP2012135790A | 2012-07-19 | |||
| JPS63256227A | 1988-10-24 |
Attorney, Agent or Firm:
JIAQUAN IP LAW FIRM (CN)
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