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Plastic telescopic pipe and method for manufacturing same

A telescopic tube and plastic technology, which is applied in the direction of hoses, pipes, pipes/pipe joints/pipes, etc., can solve the problems of easy to spread and not easy to fold, and achieve the effect of not easy to spread, beautiful appearance and high yield

Active Publication Date: 2009-08-05
林和平
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The appearance of the corrugated tube overcomes some defects of the spiral tube, but when it is shrunk from the stretched state, it still has the disadvantage that it is easy to scatter and not easy to fold, and there is no literature record about the manufacturing method of the corrugated tube

Method used

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  • Plastic telescopic pipe and method for manufacturing same
  • Plastic telescopic pipe and method for manufacturing same
  • Plastic telescopic pipe and method for manufacturing same

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Embodiment Construction

[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0025] Such as Figure 1 to Figure 5 Shown is a preferred embodiment of the plastic expansion tube of the present invention. Such as Figure 1 to Figure 5 As shown, the plastic telescopic tube of this embodiment has a bellows-shaped tube body 1. When the tube body 1 is stretched out, its outer diameter D is 102 mm, its inner diameter d is 86 mm, and the peak distance S is 17 mm. Both ends of the pipe body 1 are integrally connected with a joint 2, and two circles of annular ribs 3 are formed on the joint 2 for connection and positioning.

[0026] Seen from the longitudinal section of the pipe body 1 in its extended state, the pipe wall is alternately connected by the right side wall 11, the arc-shaped crest wall 12 and the left side wall 13 to form a continuous wave shape, and the arc of the crest wall 12 The radius of curvature R1 is 1 mm,...

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Abstract

The invention discloses a plastic extension pipe and manufacturing method thereof. The plastic extension pipe is provided with a corrugated pipe body, both ends of which are integrally jointed with adapters, characterized in that viewed from the extended longitudinal section, the pipe wall presents a wave shape by ordinal alternant connections of a right side-wall, circular wave peak wall and a left side wall, curvature radius of the wave peak wall arc is 0.5 to 2 millimeters, a smooth transition is provided between the right side wall and the wave peak wall arc, a break point protruding to the inner pipe is formed by intersection of the left side wall and the wave peak wall arc. Manufacturing method includes steps of pipe blank extrusion moulding, pipe blank inflation forming in shaping mould and compression shaping. Advantages of the product are: good appearance, folding held facilitation and hard unpacking, strong self-shaping capability. Advantages of the method are: easy and simple, exact shaping and high rate of finished products. The product can be widely used as ventilation, exhaustion and drainage elements, for example super baths, ventilators, water channels, washing machines and smoke exhaust ventilators.

Description

technical field [0001] The invention relates to a plastic telescopic tube with a corrugated wall, which is suitable for ventilation and drainage equipment such as toilet heaters, ventilators, range hoods and washing machines, and a manufacturing method thereof. Background technique [0002] Plastic telescopic tube is a very versatile ventilation, exhaust, and drainage component, and it is an indispensable and important component for bathroom heaters, ventilators, sinks, washing machines, and range hoods. The important feature of the plastic telescopic tube is that it can be stretched, shrunk and bent under the action of external force to meet the requirements of various occasions. [0003] Early telescopic tubes were mainly helical tubes, such as the "extensible hose" disclosed in Chinese patent CN96213193.8, which consists of a spiral corrugated hose and a spiral rib. The "plastic expansion tube with joints" disclosed in Chinese patent CN98244744.2 also belongs to the spir...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L11/11B29C69/02B29C47/20B29C49/54B29C53/08B29C48/32
Inventor 林和平
Owner 林和平
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