Method and device for sticking plastic film on internal and external surfaces and end surface of metal tube
An end surface, inner and outer surface technology, which is applied to the field of covering the inner and outer surfaces of the spigot section of metal pipes and the surface of the end parts with plastic films, can solve the problems of not solving the problem of film coating on the spigot section of metal pipes, and achieve outstanding substantial Features, good anti-corrosion performance, long service life
Active Publication Date: 2012-01-18
XINXING DUCTILE IRON PIPES CO LTD
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Problems solved by technology
Chinese patent 02114855.4 (publication number CN1367075A) discloses a manufacturing method of a steel-plastic composite pipe formed by compounding galvanized steel pipe and plastic. The lamination problem
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[0021] Such as figure 1 As shown, the equipment for pasting plastic films on the inner and outer surfaces of metal pipes and the end surfaces of the present invention includes a socket flanging machine 1, a rotary table 2 that allows the metal pipe 15 to be in a rotating state centered on the axis of the metal pipe , Industrial hot air blower 3, vacuuming equipment and heating coil, metal pipe 15 is placed on the rotary table 2 along the left and right horizontal direction, the right end of the metal pipe 15 is a socket, the left end is a socket, and the socket flanging machine 1 is located on the rotary table On the left side of 2, the multiple expansion blocks 4 of the socket flanging machine 1 face the rotary table 2, the air outlet of the industrial hot air blower 3 is connected with the air inlet of the air supply pipeline 18, and the air outlet of the air supply pipeline 18 is located at Rotate the left end of table 2.
[0022] Such as figure 2 As shown, the socket fl...
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Abstract
The invention relates to a method for sticking a plastic film on internal and external surfaces and an end surface of a metal tube, which comprises the following steps that: a plastic tube film of a corresponding size is prepared according to the specifications of the metal tube, and an external surface of the plastic tube film is coated with a layer of hot-melt adhesive; the plastic tube film passes through the inside of the metal tube and is exposed from a spigot end of the metal tube, hot air is used to heat the plastic tube film exposed outside the spigot end of the metal tube, and the plastic tube film exposed outside the spigot end of the metal tube is overturned to be sleeved on an external surface of the spigot end of the metal tube. A device for sticking the plastic film on the internal surface of the metal tube and the external surface of the spigot end comprises a spigot flanging machine, a rotation worktable which can make the metal tube rotate with a center of an axis of the metal tube, an industrial hot-air heater, a vacuum extractor and a heating coil. The invention aims at providing the method and the device for sticking the plastic film on the internal surfaces ofthe metal tube and the external surface of the spigot end, which ensures the more excellent antiseptic property and longer service life of the metal tube by sticking the plastic film on the internal and external surfaces of the spigot end of the metal tube and the end surface of the metal tube.
Description
technical field [0001] The invention relates to a method and equipment for pasting plastic film on the inner and outer surfaces of the socket section and the surface of the end of a metal pipe whose two ends are sockets and sockets respectively. Background technique [0002] With the continuous advancement of science and technology, the pipeline industry is also undergoing rapid changes. At present, composite pipelines of various structures emerge in endlessly on the market. As far as civil water supply and drainage pipelines are concerned, their hygienic performance is mainly considered; For pipelines with corrosive media, the main consideration is its anti-corrosion performance. The typical pipelines in the market in the above fields mainly include composite pipelines such as plastic powder sprayed in metal pipes, epoxy resin, and polyurethane. Although the metal pipe with the above coating has solved the anti-corrosion problem of the straight pipe section of the metal pip...
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IPC IPC(8): B29C63/22
Inventor 申勇宋亚峰叶丙义刘延学段欣
Owner XINXING DUCTILE IRON PIPES CO LTD