CN2235331Y

CN2235331Y - Inner screwed drawing and rolling machine for mfg. coiled pipe

Info

Publication number: CN2235331Y
Application number: CN 95226557
Authority: CN
Inventors: 张�诚; 张立豪
Original assignee: Individual
Current assignee: Zhang Cheng; Zhang Lihao
Priority date: 1995-11-17
Filing date: 1995-11-17
Publication date: 1996-09-18
Anticipated expiration: 2005-11-17

Abstract

The utility model relates to a process device which can process pipes with minor diameters to coil pipes with internal threads, belonging to the mechanical process field. A drawing-rolling machine for internal thread coil pipe is provided with a discharge station, a drawing machine, a spinning device, a pulling dolly, a pressed roller and a collection frame. A hollow axis high-speed motor, a rotary roller head, a spiral internal die cutter and sizing die holder are arranged in the spinning device. The utility model combines the drawing process and the lateral rolling process as an entity, adopts a floating spiral inner mould knife to match with the rotary roller head to producethe internal threads, has novel design, high production efficiency and high quality, and can process various non-ferrous and ferrous metal pipes whose phi is from 6.35 mm to 16 mm and wall thickness is 0.25 mm to 0.75 mm to the internal thread coil pipes.

Description

The pull-out and reducing stand of internal thread coil pipe

The utility model belongs to field of machining, is a kind of process equipment that minor diameter tubing can be processed into the coil pipe with internal thread.

At present, the internal thread coil pipe of the red copper of minor diameter has been widely applied on the condenser and evaporimeter of refrigeration industry, and China does not produce the special equipment of producing the internal thread coil pipe so far.

The purpose of this utility model provides the special equipment of a kind of production efficiency height, production internal thread coil pipe easy to use.

The purpose of this utility model is achieved in that the pull-out and reducing stand of internal thread coil pipe is provided with material platform, drawbench, spinning apparatus, draws in dolly, presses the garden roller and collects frame; Be provided with high-speed electric expreess locomotive in the spinning apparatus with hollow shaft, hollow axle end is provided with the tapered rotary roller head of inwall, be provided with the spiral internal mold cutter that floats with multi-head spiral cutter tooth in the tubing in the rotary roller head, lead angle is 18 °-55 °, also is provided with the sizing die holder.

Internal thread coil pipe production equipment of the present utility model, integrate drawing process and cross rolling process, adopt the spiral internal mold cutter that floats to cooperate and produce the pipe internal thread with the rotary roller head, be characterized in: novel in design, production efficiency is high, quality good, can be used to various coloured, the ferrous metal tubing of diameter phi 6.35-φ 16mm wall thickness 0.25-0.75mm are processed into the internal thread coil pipe.

Embodiment further narrates below in conjunction with accompanying drawing: Fig. 1 is a structural representation of the present utility model, and Fig. 2 is the position view of spiral internal mold cutter in the rotary roller head.Embodiment: to produce φ 9.52mm, the red copper internal thread coil pipe of wall thickness 0.36mm is an example.The red copper tubing of getting φ 13mm wall thickness and be 0.5mm places on the material platform 1, spiral internal mold cutter 14 is put into the tube head of tubing 7 and tube head is hammered into shape little, and tube head is inserted drawbench 2, machines and produces.After tubing passes through tube reducing die holder 8, be kept to φ 11mm wall thickness 0.43mm, drawing dolly 9 makes tubing advance to the hollow shaft that spinning apparatus 3 penetrates high-speed electric expreess locomotive 11, this moment, the rotary roller head 10 of high speed rotating acted in pipe at pipe external spiral internal mold cutter, make the tubing tube reducing and internal thread occurs, become the riffled tube 13 of φ 9.52mm wall thickness 0.36mm behind sizing die holder 12, that presses garden roller 5 makes more standard of screwed pipe garden degree, enters then to collect frame 6 and become internal thread coil pipe finished product.Draw in dolly 4 and do not work when flat, it is only fast intact and pull on the inlet pipe material when leaving drawbench and add and use man-hour in tubing processing.The internal thread of this equipment becomes the pipe rate to reach more than 95%, and the high-speed electric expreess locomotive rotating speed is 15000-25000 rev/min, speed of production 15-30 rice/minute stepless adjustable, and product length reaches more than 100 meters, the requirement that all meets international standards of ellipse garden degree, tooth depth and size.

Claims

The pull-out and reducing stand of internal thread coil pipe is provided with material platform 1, drawbench 2, and spinning apparatus 3 draws in dolly 4, presses garden roller 5 and collects frame 6; It is characterized in that: be provided with high-speed electric expreess locomotive 11 in the spinning apparatus with hollow shaft, hollow axle end is provided with the tapered spinning roller head 10 of inwall, be provided with the spiral internal mold cutter 14 that floats in the tubing in the spinning roller head with multi-head spiral cutter tooth, lead angle is 18 °-55 °, is provided with sizing die holder 12.