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Production method of 90íÒelbow steel skeleton of composite tube and dedicated die therefor

A steel frame and composite pipe technology, applied in the direction of manufacturing tools, other manufacturing equipment/tools, forming tools, etc., can solve the problem that the thickness of the plastic layer on the inner and outer walls of the steel frame is not easy to meet the standard requirements, and the manufacturing cost of the 90° elbow is high. The overall strength decline and other problems, to achieve the effect of guaranteed strength, small spherical error, and improved yield

Inactive Publication Date: 2006-07-26
HUACHUANG TIANYUAN IND DEVING
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AI Technical Summary

Problems solved by technology

This is a traditional manual operation method. The existing problems are that the production efficiency is low, the sphericity error of the molding is relatively large, the thickness of the plastic layer on the inner and outer walls of the steel skeleton after injection molding is not easy to meet the standard requirements, and the steel skeleton has many spherical welds. , the steel plate is thinned and the strength of the steel plate is weakened by manual knocking during the calibration, which makes the manufacturing cost of the 90° elbow higher and the overall strength decreases

Method used

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  • Production method of 90íÒelbow steel skeleton of composite tube and dedicated die therefor
  • Production method of 90íÒelbow steel skeleton of composite tube and dedicated die therefor

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Embodiment Construction

[0017] refer to figure 1 ~Figure 6, the processing method of the composite pipe 90° elbow steel skeleton is as follows:

[0018] Cut the steel plate into the shape of the coiled plate 7 according to the drawing, and punch or drill holes. The holes are to be used for plastic casting and make the inner and outer walls form a complete whole. Roll the coiled plate 7 into a cylindrical shape and butt weld it, put it into the die 1, and then insert the punch 3 into the steel skeleton 2 that has been made. The hydraulic press or an oil cylinder is connected with the pressure rod 6, pushes the punch 3, presses the steel frame 2 into the die 1 through the punch 3 and the pushing plate 5, the protruding part of the steel frame 2 is spherically formed with the concave-convex die, and the steel The cylindrical portion of the skeleton 2 is also corrected with the insertion of the punch 3 . After the punch 3 is pressed to the end, the punch can be extracted. Because the steel skeleton 2...

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Abstract

The invention relates the manufacturing method and special die of multiple-unit tube 90Deg steel skeleton. The method comprises the following steps: cutting the steel plate to roll bending 7; rolling the roll bending 7 into cylindrical shape, butt welding and making the tubular steel skeleton 2; putting it into female die 1, inserting the terrace die 3 into steel skeleton 2, pushing terrace die 3 by compression bar 6, terrace die 3 and charging plate 5 pressing the steel skeleton 2 into female die 1, then ejecting the terrace die 3 and steel skeleton 2; then welding the steel skeleton 2 to form 90Deg angle head steel skeleton; the female die and the bottom of female die being spherical surface. The productivity is high, spherical degree error is little, welding spot is little and strength is big.

Description

technical field [0001] The invention relates to a production method of a plastic composite pipe fitting, in particular to a method for manufacturing a 90° elbow steel skeleton which plays a reinforcing role in the composite pipe fitting and a special mold thereof. Background technique [0002] At present, various plastic composite pipes are more and more widely used in the market. Due to the defects in the manufacturing process of the steel skeleton in the 90° elbow pipe fittings of the composite pipe, the thickness of the plastic layer on the inner wall of the 90° elbow product is much less than that. To meet the standard requirements, resulting in product degradation or scrap, the reason is due to its processing method. The existing steel skeleton processing method is as follows: first press the plate figure 1 Cut off the material, after punching or drilling the hole, cut off the shadowed area 8 of the protruding part; then roll the board into a straight tube shape, corre...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P23/04B21D37/10
Inventor 田青刚徐洪涛杨艳玲吴向东
Owner HUACHUANG TIANYUAN IND DEVING
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