Device for preparing tube bending product by concentric deflection extrusion moulding
A technology of extrusion molding and bending parts, which is applied in the field of boilers, can solve the problems of wrinkled cross section, thinning of the outer side wall, thickening of the inner side wall, etc., and achieve no distortion of the cross section, no wrinkling of the wall thickness, and uniform wall thickness Effect
Inactive Publication Date: 2012-07-04
TIANJIN UNIVERSITY OF TECHNOLOGY
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[0023] In order to enable those skilled in the art to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
[0024] see figure 1 Referring to Fig. 3, the present invention provides a device for preparing pipe bending parts by concentric eccentric extrusion molding, which includes an upper mold part and a lower mold part, and the lower mold part is located directly below the upper mold part;
[0025] In the present invention, see Figure 2a , Figure 2b , the upper mold part includes an upper template 1, a punch fixing plate 3, a punch 6 and a guide sleeve 7, and the upper template 1 is connected to the drive output shaft of an external hydraulic press;
[0026] The bottom surface of the upper template 1 in the transverse middle position is fixedly provided with a punch fixing plate 3, and the bottom surface of the punch fixing plate 3 in the tran...
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The invention discloses a device for preparing tube bending product by concentric deflection extrusion moulding, comprising a lower mould plate, the upper surface of the lower mould plate is provided with a die holder, the die holder is internally provided with a hollow die, the lower end of the die is provided with a conic discharging hole, corresponding position of the lower mould plate and thelower end of the die is provided with a discharging hole; the die is internally provided with blank and an extrusion block, the extrusion block is arranged right above the blank, the center of the blank and the extrusion block is provided with a center hole, the center hole is inserted with a central spindle; the top of the die holder is provided with a central spindle fixing plate, two punch inlets are arranged at the position corresponding to the extrusion block on the central spindle fixing plate, the two punch inlets are inserted with a punch, the top of the punch is fixedly provided withan upper mould plate, and the upper mould plate is connected with the driving output shaft of an external hydraulic machine. The invention can prepare tube bending product by controlling the width ofnotch part of the blank, and tube bending product with high quality, uniform thickness, no wrinkle and no distortion on cross section can be rapidly prepared.
Description
technical field [0001] The invention relates to the technical field of boilers, in particular to a device for preparing pipe bending parts by concentric eccentric extrusion molding. Background technique [0002] As the application fields of pipe bending parts become more and more extensive, pipe bending parts are widely used in aerospace, automobile, shipbuilding and other industries, and the requirements for bending quality and forming process of pipes are getting higher and higher. There are defects such as thinning and cracking of the outer wall, thickening, wrinkling and cross-sectional distortion of the inner wall in the parts produced by the traditional pipe bending method. [0003] Therefore, there is an urgent need to develop a preparation device for pipe bending parts, which can produce pipe bending parts with reliable quality, uniform wall thickness, no wrinkling, and no distortion in cross section. Contents of the invention [0004] In view of this, the object ...
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IPC IPC(8): B21C23/02B21C25/02
Inventor 宋继顺马叙封志龙马静云尹康
Owner TIANJIN UNIVERSITY OF TECHNOLOGY