CN2265256Y

CN2265256Y - Device for working inner spiral line of pipe material

Info

Publication number: CN2265256Y
Application number: CN 94218201
Authority: CN
Inventors: 王海波; 王经涛; 郎锡君; 许育忠; 杜忠泽
Original assignee: Xian University of Architecture and Technology
Current assignee: Xian University of Architecture and Technology
Priority date: 1994-08-05
Filing date: 1994-08-05
Publication date: 1997-10-22
Anticipated expiration: 2004-08-05

Abstract

The utility model relates to a device for rolling and processing spiral lines in pipe material, comprising a machine frame, a motor and a fixing drawing die. The fixing drawing die is matched with a positioning sliding core print with no die bearing in a pipe; two sets of rolling roll assemblies are arranged on the outer edge of the pipe; a notch core print for the spiral lines in the pipe works together with the rolling roll assemblies; the positioning sliding core print, an oil inlet frame, and the notch core print for the spiral lines are connected in series through a connecting rod whose both ends are provided with bearing frames; an over-empty reeling machine is also arranged on an internal spiral line pipe. The utility model has the advantages of simple structure, little space occupation, low device cost and low noise; the utility model has an outstanding effect on high convex ribs and deep groove pipes, and the rate of finished products is improved.

Description

A kind of processing tubing inner vortex device

The utility model relates to the device of rolling processing tubing inner vortex, is specially adapted to make the combination forming device of tubular body.

In the prior art, tubing with inner vortex is a kind of efficient heat-exchange tube, and it is widely used in processing the device of tubing inner vortex so in the industries such as air-conditioning, refrigeration, refrigerator, chemical industry, present domestic genus is blank, and only checking in Japan has this equipment and patent documentation.For example, the clear 59-12365 of special permission communique, to be pipe carry out tube reducing and subtract the resistance of deformation that the wall deformation processing produced and become superposed force with frictional force by fixing drawing-die and sizing floating core head the technical characterictic of on March 22nd, 1984 record, cause tensile force greatly to increase, the ultimate tensile strength that very easily surpasses production tube, often break production tube,, be difficult to process complete inner vortex again if tonnage and deformation extent are little.1991.2.21 and for example, special fair become 3-12967 and 1991.8.7, the special fair record that becomes 3-51490 two patents, though more progressive to some extent than aforementioned patent, because Rotary rolling mill rotates at a high speed, noise is big, working condition is poor, also exists frictional resistance big, the device structure complexity, adhesion and frictional force in the valency height, unlubricated system, especially helix groove are bigger, the light-wall pipe difficulty is bigger for producing, all exist work frictional resistance big in sum, yield rate is low, weak points such as efficient difference.

It is little that the purpose of this utility model provides a kind of volume, easy and simple to handle, and noise is low, yield rate height, a kind of processing tubing inner vortex device that frictional resistance significantly reduces.

The solution that realizes the utility model purpose is: provided a kind of process tubing inner vortex device comprise be with on the pipe external diameter one fixedly in drawing-die and the pipe not with the location floating core head of calibrating strap, it fixedly after the inside and outside combination of drawing-die and floating core head, has had the district of drawing; Fixing drawing-die and cross between the device of empty whole footpath and be provided with different-diameter, two groups of outer rim rolling roll assemblies that axis differs 60 ° or 90 ° are installed, also be inserted in a core print that the helix cutting is arranged in its pipe, this core print with not with the location floating core head and the oil-feed frame of calibrating strap, the connecting rod that has bearing bracket stand by two ends is connected in series.Said only is not to make pipe produce the tube reducing distortion with the location floating core head of calibrating strap, the helix core print then makes through the pipe behind the reducing and carries out the associating rolling again, to form complete inner vortex, and frictional resistance is very low, and core print is subjected to the effect of rolling component simultaneously, produces rotation, in the process of rollforming, make and be full of lubricating oil in the pipe owing to set up oil supply mechanism, frictional force and resistance of deformation are significantly reduced, the high muscle deep trouth of easier production inside spin spool.

The utility model is compared with background technology, simple in structure, it is little to take up room, equipment manufacturing cost and noise are low, inner vortex forms complete, especially more outstanding to the inside spin spool of producing high convex tendon deep trouth, overcome to revolve and rolled the defective that inner surface of tube in the method processing is coarse and easily crack, thereby improved efficient and yield rate greatly.

Below in conjunction with accompanying drawing content of the present utility model is illustrated:

Fig. 1 is a structural principle schematic diagram of the present utility model;

Fig. 2 is the rolling roller three roll structure schematic diagrames of Fig. 1;

Fig. 3 is I-I, the II-II cutaway view of Fig. 2;

Fig. 4 is the rolling roller four roll structure schematic diagrames of Fig. 1; Fig. 5 is the interior flush type helix cutting core print schematic diagram of the pipe of Fig. 1;

As shown in Figure 1, the utility model processing tube woods inner vortex device comprises frame, motor and fixing drawing-die 4.On described frame, install and fix drawing-die 4, that matches with fixing drawing-die 4 has in the pipe not a location floating core head 5 with calibrating strap, its fixedly a side of drawing-die 4 two groups of different-diameters are arranged, axis differs the outer rim rolling roll assembly 11 of 60 ° or 90 °, 2, with

rolling roll assembly

11,2 cooperative interior flush type helix cutting core prints 3 of pipe in addition, flush type helix cutting core print 3 in the pipe, in the pipe not with the location floating core head 5 of calibrating strap, oil-feed frame 6 is connected in series by the connecting rod 8 that two ends have bearing bracket stand 7, also had empty whole footpath device 12 in the place ahead of 1 of inside spin spool, but be respectively equipped with the valve 10 of sprinkling oil or cooling fluid at the two ends of frame.

Fig. 2, Fig. 3, Fig. 4 have provided three rollers, the four roll structure schematic diagrames in the concrete example, and each roll is half taper, and its half garden cone top part should be 120 ° or 90 ° of garden arcs in theory, in fact do less than.For this reason, this device has been adopted large and small rolling roller associating rolling, that is to say that big rolling roller 2 slot each other is by little rolling roller 11 rollings, its rolling roll assembly is according to the caliber difference of processing, can the adjusting play or change roll, the rolling roll assembly can be an adjustable mechanism in other words, by described Electric Machine Control.

Rolling roller in rolling roll assembly 2 and the rolling roll assembly 11 is made up of three rolls at least.

Fig. 5 is flush type helix cutting core print 3 schematic diagrames in the pipe, and it is under the effect of rolling component, and around connecting rod 8 rotations, simultaneously, flush type helix cutting core print 3 must be crossed the tangent position of

rolling roll assembly

2,11 rolls in the pipe, with the formation of helical in guaranteeing.

Above-mentioned said a kind of processing tubing inner vortex device, its procedure of processing is:

1. at first in pipe, spray oil or the lubricant that has pressure by the head of pipe 9, then in the interior flush type helix cutting core print 3 of the pipe that will be connected in series, the pipe not location floating core head 5, the oil-feed frame 6 with calibrating strap penetrate in the pipe 9.

2. with grinding machine that the front end of pipe 9 is fine ground, so that the tubing front end can be passed in the fixedly drawing-die 4 and the empty drawing pass of installing on the frame, sting tightly with the jaw of nipping of stretching-machine or plate drawing machine then, stretch.At this moment can start big or small rolling mechanism or passive rolling by driven by motor, in the pipe not with flush type helix cutting core print 3 in the location floating core head 5 of calibrating strap and the pipe under the effect of frictional force, enter separately that the worker uses the position, just can be processed into the tubing 1 that tubing inside has inner vortex successively; Simultaneously, owing to be filled with the oil or the lubricant of pressure in the pipe 9, at this moment, oil or the lubricant hole by oil-feed frame 6 enters in the pipe not imports with the hole of the location floating core head 5 of calibrating strap that flush type helix cutting core print 3 surfaces are lubricated in the pipe into, through device 12 whole footpaths, empty whole footpath, its surface becomes the tubing of bright and clean to tubing again after the rolling.

Claims

1. process tubing inner vortex device for one kind, comprise frame, motor and fixing drawing-die (4), it is characterized in that also comprising one with pipe that fixing drawing-die (4) matches in not with the location floating core head (5) of calibrating strap, its fixedly a side of drawing-die (4) two groups of different-diameters are arranged, axis differs the outer rim rolling roll assembly (11 of 60 ° or 90 °, 2), with rolling roll assembly (11,2) cooperative interior flush type inner vortex cutting core print (3) of pipe in addition, flush type helix cutting core print (3) in the pipe, in the pipe not with the location floating core head (5) of calibrating strap, oil-feed frame (6) is connected in series by the connecting rod (8) that two ends have bearing bracket stand (7), the place ahead in inner helix pipe (1) also was provided with empty whole footpath device (12).

2. a kind of processing tubing inner vortex device according to claim 1 is characterized in that being made up of three rolls at least in the rolling roll assembly.

3. a kind of processing tubing inner vortex device according to claim 1 and 2 is characterized in that outer surface has the tangent position that the core print head of managing interior flush type helix cutting is crossed the rolling roll assembly.