JPS582488Y2 - Oscillating guide roller device for spiral pipe making machines - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a guide roller device for regulating the coil feeding position.

In a spiral tube making machine, a coil edge loose fit is located near the forming position where the horizontally fed coil is formed into a tubular shape, and comes in contact with the edge of the coil in order to accurately regulate the widthwise position of the coil. A grooved guide roller is arranged.

However, the feeding coil curves and rises due to forming resistance in the vicinity of the forming position, and the amount of rise varies depending on the magnitude of forming resistance due to differences in tube diameter. Even if the diameter of the coil is maintained, if pipes of various diameters are to be formed, the running direction of the coil and the attitude of the guide roller will not match, making circular guidance impossible.

In view of the above points, the purpose of this invention is to provide a guide roller device that can accurately regulate the position of the coil in the width direction regardless of the difference in the diameter of the pipe to be formed. The explanation will be based on the drawings.

In FIG. 1, 1 is three forming rolls, 2 is a coil fed between the forming rolls 1 by a feed roll 3, and 4 is a spiral tube formed by the forming rolls 1.

5 is a guide roller device placed near the molding position;
This is for regulating the feeding position by feeding the coil 2 without bringing it into contact with the guide roller 6.

The guide roller device 5 will be described in detail in FIGS. 2 and 3.
In the figure, 7 is a guide rail having a dovetail groove 8, and 9 is a movable base having a dovetail groove fitting portion 9a slidably fitted into the dovetail groove 8, and a roller holder 10 is mounted on the base 9. The coil 2 is pivotally supported so as to be tiltable in a plane parallel to the edge plane.

11 is a tilting pivot shaft.

The roller holder 10 is made up of a base portion 12, a support protrusion 13, and a roller support shaft 14, and the roller support shaft 14 is supported at both ends by support protrusions 13, 13 that protrude from the roller holder 10. The guide roller 6 is the roller support shaft 1
4 so as to be rotatable and movable in the axial direction.

15 is a coil edge fitting groove provided in the guide roller 6.

Reference numeral 16 denotes a means for fixing the roller holder 10 at any tM movement angle, which includes a lug portion 17 protruding from the roller holder 10, a lug portion 18 protruding from the movable base 9, and a portion of both ear pieces. It consists of a tightening bolt nut 21 inserted through a circular hole 19 and an elongated hole 20.

According to such a configuration, the feeding coil 2 rises near the forming position as shown by the chain line in FIGS. Since the inclination angle θ of the roller 6 can be adjusted in advance and fixed at that angle, the running direction of the coil 20 at the guide roller installation position and the direction of the groove 15 of the guide roller 6 will not be inconsistent. Since the position of the coil 2 in the width direction can be accurately regulated, tubes of various diameters can be stably formed.

Moreover, the guide roller 6 can freely respond to the vertical displacement of the coil 2 by moving in the axial direction of the support shaft 14.

Note that the vertical movement of the guide roller 6 is carried out by the support shaft 1 as described above.
Instead of moving along the roller holder 4, the roller holder 10 may be moved as a whole.

The roller holter 10 is attached to the moving base 9 by the coil 2.
This is to move the guide roller 6 according to the zero width.

This invention can be implemented as described above, and according to this, the inclination angle of the guide roller can be set according to the amount of rise of the coil, and the widthwise position of the coil can be accurately regulated. Pipes of various diameters can be stably formed.

[Brief explanation of drawings]

The drawings show one embodiment of this invention, in which Fig. 1 is a perspective view of a spiral pipe making machine, Fig. 2 is a longitudinal sectional front view of the guide roller device, Fig. 3 is a front view thereof, and Fig. 4 is an explanatory diagram of the operation. It is. DESCRIPTION OF SYMBOLS 1... Forming roll, 2... Feed coil, 5... Guide roller device, 6... Guide roller, 7... Rail, 9... Moving base, 10... Roller holder, 15.
··groove. 16... Fixing means, 20... Long hole, 21... Bolt nut.

Claims (1)

[Scope of utility model registration request] In a guide roller device for regulating the coil feeding position, which is provided with a guide roller having a coil edge loose fitting groove arranged near the forming position and in contact with the edge of the feeding coil, one of the guide rollers is moved in a plane parallel to the coil edge surface. An oscillating guide roller device for a spiral pipe making machine, which is attached to a roller holder that can be tilted at a tilt angle, and is provided with means for fixing the roller holder at an arbitrary tilt angle.