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Automatic pipe outer diameter control system

An automatic control system and pipe technology, applied in the field of plastic pipes, to achieve the effects of reducing manual labor, wide application range, and saving electric energy

Inactive Publication Date: 2016-04-13
CHENGDU CHUANXING TECH PLASTICS INDUSRTY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above problems, the purpose of the present invention is to: provide an automatic control system for the outer diameter of pipes to solve the problem of automatic control of outer diameters of pipes in the production process of plastic pipes

Method used

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Experimental program
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Effect test

Embodiment 1

[0024] like figure 1 As shown, the plastic pipe outer diameter shaping process in the prior art is as follows: first, the raw material of the plastic pipe is sent into the mold by the feeding device, and after being melted at high temperature in the mold, the annular pipe is extruded through the mold outlet. The temperature of the pipe is high, and the pipe is easily deformed under the action of gravity and other external forces; after the pipe is sent into the sizing sleeve by the conveying wheel, the negative pressure device of the sizing sleeve is turned on, and the operator is monitoring the negative pressure detection meter next to it. Once the pressure value exceeds the set range, quickly mark this section of pipe, if the pressure value recovers after a period of time, cut off this section of scrap pipe; if the pressure value does not return to the set range after a period of time, shut down the entire production line, and Maintain the temperature in the mold to prevent ...

Embodiment 2

[0026] like figure 2 As shown, a pipe outer diameter automatic control system of the present invention is improved on the basis of the prior art, and its steps are as follows: first, the operator inputs the parameters into the touch screen, starts the system, and the plastic pipe is fed by the feeding device. The raw material is fed into the mold, and after being melted at high temperature in the mold, the ring-shaped pipe is extruded through the mold outlet. Due to the high temperature of the pipe at this time, the pipe is easily deformed under the action of gravity and other external forces; the pipe is sent into the pipe by the conveying wheel The pipe sizing sleeve of the sizing sleeve device, at this time, according to the feedback data such as the negative pressure detection meter and the temperature detection device, the single-chip computer calculates the appropriate negative pressure value, and adjusts the power of the frequency converter on the vacuum pump motor, and...

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Abstract

The invention discloses an automatic pipe outer diameter control system. The automatic pipe outer diameter control system comprises a negative pressure detection gauge, a temperature detection device, a single-chip microcomputer, a touch screen, a vacuum pump, a negative pressure pipeline, a pipe sizing sleeve device and an alarm device. The vacuum pump is connected with the pipe sizing sleeve device through the negative pressure pipeline, the negative pressure detection gauge is installed on the negative pressure pipeline, the touch screen is installed on the single-chip microcomputer in a connected mode, and the single-chip microcomputer is connected with the negative pressure detection gauge, the temperature detection device, the vacuum pump and the alarm device. The pipe sizing sleeve device comprises a sizing sleeve shell, a pipe sizing sleeve, a spray cooling mechanism and a sealing mechanism. By additionally arranging the negative pressure detection gauge and other devices, the pipe outer diameter sizing process is automatically regulated and controlled, manual work is reduced, and the rejection rate of production is reduced; meanwhile, an alarm can be given to remind operators to carry out emergency processing when changes beyond the automatic regulation and control capability of the system happen, and thus the safety coefficient of production is increased; by arranging a frequency converter, the vacuum degree of the vacuum pump can be regulated, and meanwhile electric energy can be saved.

Description

technical field [0001] The invention relates to the field of plastic pipes, in particular to an automatic control system for the outer diameter of pipes. Background technique [0002] At present, vacuum sizing sleeves are mostly used in the production of plastic pipes. The sizing sleeves generally adopt a metal sleeve structure. The raw materials are shaped into tube embryos in the extruder. A certain negative pressure space is formed in the sizing device, and the unshaped tube embryo will be close to the pipe wall under the action of negative pressure, and form a regular outer diameter of the pipe according to the inner diameter of the sizing device, and pass through the spray water or immersion in the vacuum box. The bath water is cooled to form the tube. [0003] In the production process of pipe sizing, the tube embryo belongs to unshaped pipe, and its surface hardness is poor. In order to control the pipe sizing, it is necessary to strictly control the vacuum degree of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C47/92B29C47/90B29C48/92B29C48/90
CPCB29C48/903B29C48/907B29C48/92B29C2791/006B29C2948/92619B29C2948/92923
Inventor 张岳岐李富彬曾贤东袁伟张道维侯英杰
Owner CHENGDU CHUANXING TECH PLASTICS INDUSRTY CO LTD
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