Inner cavity water filling structure in corrugated pipe molding process
A forming process and bellows technology, which is applied in the field of water injection structure in the inner cavity of thin-walled sleeve parts, can solve the problems of large inner cavity space, low production efficiency, long time and other problems of a straight tube, and achieve high production efficiency, simple structure and easy operation. effect achieved
Inactive Publication Date: 2013-08-21
JIANGSU MAITENG PIPELINE EQUIP
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Problems solved by technology
This kind of water injection structure is relatively simple and easy to implement, but this water injection structure has disadvantages during use: due to the large space in the inner cavity of the straight cylinder, it takes a long time to fill the inner cavity of the straight cylinder with water and reach the specified pressure. Similarly, it will take a long time to drain the water in the inner cavity of the bellows after forming, and the production efficiency is low
Method used
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[0014] The present invention will be further described below according to the accompanying drawings and in conjunction with the embodiments.
[0015] The inner cavity water injection structure of the corrugated pipe forming process shown in the accompanying drawings includes a straight cylinder 2 and a left end cover assembly 1 and a right end cover assembly 3 installed at both ends of the bellows; the right end of the left end cover assembly 1 is provided with a mandrel 1.3, and the mandrel 1.3 extends into the straight cylinder 2, there is a gap between the surrounding and the inner wall of the straight cylinder 2; this embodiment is a DN500 mm corrugated pipe forming process inner cavity water injection structure, the outer diameter of the mandrel 1.3 is φ450mm, and the mandrel 1.3 is a hollow shaft sleeve sealed around; when the corrugated pipe At the end of the tube forming, there is a gap between the right end face of the mandrel 1.3 and the left end face of the right...
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The invention discloses an inner cavity water filling structure in the corrugated pipe molding process. The inner cavity water filling structure comprises a straight barrel, a left end cover assembly and a right end cover assembly, wherein the left end cover assembly and the right end cover assembly are installed at two ends of the straight barrel, and an axial water filling hole is arranged on the left end cover assembly. The inner cavity water filling structure is characterized in that a mandrel is arranged at the right end of the left end cover assembly and extends into the straight barrel, and a gap is reserved between the periphery and an inner wall of the straight barrel. When the corrugated pipe molding is finished, and a gap is reserved between the right end face of the mandrel and the left end face of the right end cover assembly for positioning the right end face of the straight barrel. By adopting the inner cavity water filling structure in the corrugated pipe molding process, an inner cavity of the straight barrel can be quickly filled with water, and specified pressure is reached. Similarly, the water in an inner cavity of a molded corrugated pipe can be quickly discharged, and the production efficiency is high.
Description
technical field [0001] The invention relates to an inner cavity water injection structure of thin-walled sleeve parts, more specifically, the invention relates to an inner cavity water injection structure during the bellows forming process. Background technique [0002] Existing corrugated pipes are generally placed on a corrugated pipe forming device or forming machine for compression molding. In order to make the pressed bellows even and smooth, water is generally injected into the inner cavity of the straight cylinder during pressing, and the pressure of the water in the inner cavity of the straight cylinder is maintained. In order to inject water into the inner cavity of the straight cylinder, end caps are generally provided at both ends of the straight cylinder, and a sealing structure is set on the end cap to seal the inner cavity of the straight cylinder, and an axial water injection hole communicating with the inner cavity of the straight cylinder is provided on the ...
Claims
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IPC IPC(8): B21D15/06
Inventor 卢树军
Owner JIANGSU MAITENG PIPELINE EQUIP