Device and method for steam molding of thermoplastic pipe
A molding equipment and thermoplastic technology, applied in the field of nylon pipes, can solve the problems of reducing production efficiency, wasting energy, and reducing the number of thermoplastic pipes, and achieving the effects of reducing energy consumption, increasing resource waste, and saving manufacturing costs.
Active Publication Date: 2013-07-17
HEBEI CHINAUST AUTOMOTIVE PLASTICS CORP LTD
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Problems solved by technology
However, for the molding of thermoplastic tubes with a small number and a long length, the corresponding molds will take up a lot of space. At the same time, due to the small number, even if the molds can be pushed into a large furnace, the number of thermoplastic tubes formed in one furnace will be too large. less
Moreover, the large furnace needs heating time, so the molding time is also longer, which not only wastes energy, but also reduces production efficiency.
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[0033] As described above, in the steam forming apparatus and steam forming method of the present invention, a thermoplastic tube is thermoformed into a specific shape by flowing and holding high temperature water vapor in the thermoplastic tube. The "upstream" position and "downstream" position referred to in the present invention are relative to the flow direction of steam and other fluids in the pipeline.
[0034] Such as figure 1 As shown, the steam forming equipment for thermoplastic pipe according to the present invention comprises:
[0035] a steam generator 11 for generating pressurized steam;
[0036] A main pipeline 1 for transporting steam, the upstream end of which is connected to the steam generator 11 to receive steam from the steam generator 11;
[0037] A proportional valve 12, which is connected in the main pipeline 1 at the downstream of the steam generator 11, and the proportional valve 12 is used to control the pressure of the steam output from the steam ...
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The invention discloses a device and method for steam molding of a thermoplastic pipe. In the device and method provided by the invention, high-temperature steam is utilized to heat and mold the thermoplastic pipe, such as a nylon pipe, into a specific pipeline shape. The steam molding method provided by the invention comprises the following steps of: preheating, heating, carrying out heat preservation, cooling and drying. Compared with the large furnace thermoforming in the prior art, the device and method for the steam molding of the thermoplastic pipe provided by the invention have the advantages that the molding time is short, the energy consumption is less, and the production cost is lowered.
Description
technical field [0001] The present invention relates to a steam forming apparatus and steam forming method for thermoplastic tubes, such as nylon tubes. Background technique [0002] It is often necessary to form thermoplastic tubing, such as nylon tubing, into specific piping shapes to accommodate the space requirements of the piping installation. When the thermoplastic tube is formed, the thermoplastic tube is usually fixed in a mold with a specific shape, and the thermoplastic tube is used to shape the tube into a specific shape corresponding to the mold by heating. [0003] Traditional thermoplastic pipe forming is carried out in a large forming furnace. The use of forming furnaces for thermoplastic tube forming is advantageous for large batches of tubes with shorter lengths, because the forming furnaces can form more tubes at one time and have higher efficiency. However, for the molding of thermoplastic tubes with a small number and a long length, the corresponding mo...
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IPC IPC(8): B29C51/00B29C51/42B29L23/00
Inventor 刘建盈周青田尧松马宝玲
Owner HEBEI CHINAUST AUTOMOTIVE PLASTICS CORP LTD