JPS6156727A - Production device of multilayer cylindrical body by spiral method - Google Patents

Abstract

PURPOSE:To miniatulize a multilayer cylindrical body production device by placing a cylindrical body supported in the inner part on the rotation supporting device movably in the axial direction and by making the constitution of moving the cylindrical inner supporting device by a screw shaft. CONSTITUTION:A cylindrical body 12 supported in the inner part by a screw boss 17 and hydraulic jack 18 group is placed on the turning rolls 8, 9 which are arranged on a rail 11 and the both ends of a screw shaft 7 being screwed to the boss 17 are connected respectively to a driving device 1 and bearing 3 via a universal joint 22. A strip steel 13 is depressed to the end of the cylindrical body 12 and the cylindrical body 12 is moved to the side of the device 1 together with rolls 8, 9 with rotating the shaft 7. The strip steel 13 is spirally wound on the cylindrical body 12 by a winding device 5 and the both end edges of the strip steel 13 are welded each other by a welding device 6. A small sized multilayer cylindrical body production device enabling a winding welding upto the end-most part of the cylindrical body is thus obtainable.

Description

[Detailed Description of the Invention] <Industrial Application Field> The present invention relates to an apparatus for manufacturing a multilayer cylindrical body using a spiral method, and more specifically, it is an improved device for rotating and axially moving a cylindrical body. .

BACKGROUND ART FIG. 5(a) and 5(b) are explanatory diagrams showing a multilayer cylindrical body manufacturing apparatus using a snow-oil method according to a prior art. As shown in both figures, the cylindrical body 12 is connected to the cylindrical body rotation support device 10.
It is rotatably supported by 3.103. For winding, the welding device 101 spirally wraps the steel strip 13 of a certain width fed out by the steel strip supply device 102 onto the cylindrical body 12 while pressing it against the surface of the cylindrical body 12 with a forming roll (not shown). At the same time, the adjacent edges of the thus-wound steel strip 13 are entirely welded.

At this time, in the above multilayer cylindrical body manufacturing apparatus, it is necessary to sequentially change the relative position of the cylindrical body 12 and the welding device 101 in the axial direction of the cylindrical body 12 and the winding. The method can be seen in two copies, as shown in Figure 5 (J3).

In the device shown in Figure 1, the wrapping is welded! 1.01 and the steel strip supply device 102 move the steel strip around the cylindrical body 12 in the axial direction of the cylindrical body 12 according to the welding speed, and the cylindrical body rotation support devices 103, 103 fixed to the ground. In addition, in the device shown in Fig. 1 03), the winding welding device 101 and the plate supply device 102 are fixed on the ground, and the cylindrical body rotation support device 103, 103 allows the cylindrical body 12 to rotate. It moves in the axial direction of the cylindrical body 12 while being supported.

<Problems to be Solved by the Invention> However, the above-mentioned conventional device has several drawbacks.

(a) The welding device 101 wraps the band@plate 13 onto the cylindrical body 12.
When trying to weld the windings to both ends of the cylinder, the cylindrical body rotation support devices 103, 103 become an obstacle. Shape 7
24.Long lengths must be provided at both ends.

(b) For wrapping, the bath wetting device 101 and the banding n plate supplying device 102
Alternatively, the cylindrical body rotation support device 103° 103 must be moved, but both are heavy and require a large amount of power, making it impossible to increase the size of the entire device.

In view of these problems, the present invention provides a spiral-type multi-layered tube that has small walls, can be welded to both extreme ends of the tube, and does not require extra length on the tube. The purpose of the present invention is to provide a shaped body manufacturing device.

Means for Solving the Problems〉 The structure of the multilayer cylindrical body manufacturing apparatus using a spiral method according to the present invention which solves the above problems is such that a steel strip is spirally wound around the outer peripheral surface of a cylindrical body. In a multilayer cylindrical body manufacturing apparatus using a spiral method that welds the adjacent end edges of the steel strips wound together to form the entire multilayer cylindrical body, the cylindrical body is supported from the inside and the cylindrical body is an internal support device having a female threaded portion at a position that coincides with the central axis of the internal support device; and a screw shunt screwed into the female threaded portion; A cylindrical body rotation support device that includes a cylindrical body feeding device and a mechanism that supports the cylindrical body from below and rotates it around an axis, and is movable integrally with the cylindrical body in the axial direction of the cylindrical body. It is characterized by having the following.

<Embodiment> Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a schematic plan view of a multilayer cylindrical body manufacturing apparatus using a spiral method according to an embodiment of the present invention, FIG. 2 is a partial side view with a portion of the drive side of the apparatus cut away, and FIG. FIG. 4 is a partial side view showing the entire working side of the device cut away, and FIG. 4 is a front view showing the inside of the cylindrical body.

As shown in these drawings, the cylindrical body 12 is mounted on a turning roll unit 8 and two sets of support roll units 9, 9. At this time, the turning roll unit 8 and the two sets of support roll units 9 and 9i1 are arranged on the rails 11 and 11 at equal intervals with the turning roll unit 8 at the center. The turning roll unit 8 includes turning rolls 19, 19 fixedly installed on a cart 20, and a rotation drive device 1 for the turning rolls 19, 19.
0, and the cylindrical body 12 is rotated by adjusting the speed at which the band steel plate 13 is wound around the cylindrical body 12.

Further, the support roll units 9, 9 are each equipped with an n-carriage 29.
and a support roll 28.28, and the support roll 28.28 can freely rotate according to the rotation of the cylindrical body 12. These turning roll units 8 and FX rolling units 9, 9 are mounted on respective trolleys 20, 29.

29 allows it to be freely retracted on the rails 11.11 in accordance with the axial movement of the cylindrical body 12. Turning roll 19.19 and support roll 2
8.28 can change the spacing, so that it can respond to changes in the outer diameter of the cylindrical body 12. The above is the rotational drive device for the cylindrical body 12 in this embodiment.

Next, the internal support device in this embodiment will be explained. This device is comprised of a plurality of sets of screw disks 17 and eight groups of hydraulic glossers 18 arranged radially around the screw disks 17, which are arranged in the axial direction of the cylindrical body 12. Each of the three hydraulic jacks 18 groups is connected to the cylindrical body 1.
The screws 17 are fixed to the center of the cylindrical body λ. 1. This group of hydraulic jacks 18 resists the pressing force when wrapping the steel strip 13 around the cylindrical body 12, so it also serves as reinforcement to maintain the roundness of the cylindrical body 12. . On the other hand, Screw Boss 17
The center of the screw shaft 7 is a female threaded part.
It is designed to be screwed together.

The cylindrical body feeding device in this embodiment includes a plurality of 7.1
The screw shaft 7, which is threadedly engaged with the 7th hole ''-? It consists of a driving part and a driven part.In the driving part, the screw shaft 7 has a universal joint 22a,
It is firmly fixed to a chuck 2 which is connected to a drive device 1 fixed to a support base 16 via a Franz 21. On the other hand, in the driven part, the screw shaft 7 is fixed to the slave ib side shaft 4 via the universal joint 22b, and the driven side shaft 4 is a vertically split type shaft fixed to the bearing support 24. Bearing 3a.

At this time, the universal joints 22a, 2 provided at both ends of the screw shaft 7 are rotatably supported by the screw shaft 7.
2b absorbs slight center runout of the screw boss 17 group and the screw shaft 7 due to errors in the roundness of the cylindrical body 12, etc.

Further, the support stand 16 of the drive device 1 is supported by four groups of four slide columns 14 provided on the drive base 15 and four groups of hydraulic glossers 23.
Within the sliding range of the group, it can be slid up and down by four groups of hydraulic glossers 23, and the height of the drive device 1 can be adjusted. Similarly, the bearing support stand 24 is supported by four groups of slide columns 27 and four groups of hydraulic glossers 25 provided on the bearing space 9, bearings 3a, 3-b.
The height can be adjusted.

In the central part in the axial direction of this embodiment, there is a wrapping device 5 for wrapping the steel strip 13 around the cylindrical body 12, and a welding device 6 for welding the end edges of the wrapped steel strip 13 together. are installed and are fixed on the ground.

In the apparatus as described above, the operation of winding the steel strip 13 gold around the cylindrical body 12 will be explained as well as the operation of this embodiment.

First, on the rgA drive side (on the left side in Figure 1; the same applies hereinafter) on the rail 11.11, there are two sets of support roll units 9.9k and a cylindrical body 1 with the turning roll unit 8 in the center.
Arrange them so that they match the length of 2 and are evenly spaced. And the screw is screw 17 and 8 hydraulic gloss 1
A plurality of sets of eight groups are fabricated on the cylindrical body 12 and placed on the metal turning roll unit 8 and two sets of support roll units 9.9 at 1°≦.

Subsequently, the screw shaft 7 is threaded into the screw death 17 from the bearing side (the right side in FIG. 1; the same applies hereinafter), and is passed through the cylindrical body 12 toward the drive device side. Then, on the driving device side of the screw shaft 7, there is a universal joint 22a and a Franz 21fzc fitting>kL, and the seven lances 21
All: Connected to chuck 2 of perturbation device 1. At this time, the height of the single-stream movement device 1 is finely adjusted by the hydraulic gloss 23 group so that the chuck 2 and the screw shaft 7 are on the same page. Also, on the bearing side, the entire screw shaft 7 is connected to the driven shaft 4 via the universal joint 22b', and is supported by the driven shaft 4 and the bearings 3a and 3b. At this time, the heights of the bearings 3a and 3b are finely adjusted using the hydraulic gloss 25 group so that the driven shaft 4 and the screw shaft 7 are on the same page.

Next, the screw shaft q is rotated by the drive device 1 and moved to the bearing side together with the cylindrical body 12-i, the turning roll unit 8, and the support roll unit 919. Then, the steel strip 13 is supplied to the end of the cylindrical body 12 on the driving device side by a steel strip supply device (not shown), and the winding is rolled down by the device 5.

Thereafter, by rotating the turning rolls 19 and 19i, the entire cylindrical body 12 is rotated clockwise when viewed from the bearing side. At the same time, by rotating the screw shaft 7 counterclockwise 9 when viewed from the bearing side, the cylindrical body 12 is moved toward the drive device side. Then, according to these speeds, the steel strip 13 is sent out from the steel strip supply device, and the winding is carried out by the device 5.
It is wound spirally around the cylindrical body 12.

At the same time as this winding operation, the edges of the wrapped steel strip 13 are welded together using the welding device 6, and immediately after that, a grinder (not shown) inside the welding device 6 is used to weld the ends of the wrapped steel strip 13 together. The excess of the weld bead is ground to make it flush with the surface of the strip steel plate 13. Note that here, the number of rotations of the screw shaft 7 is calculated from the rotational speed of the cylindrical body 12 and the feed rate in the axial direction necessary for winding the steel strip 13.

In this way, when the entire steel strip 13 has been wrapped up to the end of the bearing side of the cylindrical body 12, the steel strip 13 is cut, the end is fixed to the cylindrical body 12, and then the cylindrical body 12 is is rotated once, the unwelded portions of the edge portions of the steel strip 13 are welded, and excess grinding is performed to complete the layering work of the first layer.

A multilayer cylindrical body can be manufactured by repeating the above-described layering operation for the required number of layers.

Note that the multilayer cylindrical body made in this way can be used for high-pressure vessels and large-diameter steel pipes for high-pressure piping.

<Effects of the Invention> The following effects can be obtained in the multilayer cylindrical body manufacturing apparatus using the spiral method according to the present invention.

Ino First, the cylindrical body was mounted on a rotational support device provided at the bottom of the cylindrical body, and the movement in the axial direction was carried out by the internal support device installed inside the cylindrical body. It is possible to weld the full length of the steel strip up to the ends of both stages.

Mouth) At the bottom of the cylindrical body, while rotating the cylindrical body around the axis,
A rotary support device is provided to support the weight, and is movable together with the cylindrical body, and a screw shaft that is threaded into the internal support device of the cylindrical body is rotationally driven. Since the body is moved in the axial direction, a large drive blade is not required as a whole, and the entire device can be downsized.

As shown in the example, the cylindrical body rotation support device and L[,7-
Jung roll unit 8 and Hi Y, holding 0-le unit 9,
If 9 is used, it is economical because commercially available ready-made products can be used with some modification.

Further, in the embodiment, a plurality of sets of screw bosses 17 and eight groups of hydraulic glossers 18 are used as internal support devices.

At this time, the 18 groups of hydraulic jacks control the entire cylindrical body 1 of the steel strip 13
Because it resists the pressing force when wrapping around cylindrical body 1
It has the effect of suppressing the perfect circle concealment of 2.

[Brief explanation of the drawing]

FIG. 1 is a schematic plan view showing an entire apparatus for manufacturing a multilayer cylindrical body using a spiral method according to an embodiment of the present invention, FIG. The figure is a partial side view with a part cut away showing the driven side of the device.
The figures are front views showing the inside of the cylindrical body, Figures 5 (A) and (B).
) is an explanatory diagram showing a conventional spiral method multilayer cylindrical body manufacturing apparatus. In the drawings, 1 is a driving device 3, a bearing 5 is a winding device 6, a welding device 7 is a screw shaft 8H, a turning roll unit 9.9 is a support roll unit 11.11 is a rail 12, a cylindrical body 13 is a steel strip plate 17 Is the screw boss 18 a hydraulic gloss?

Claims (1)

[Claims] A multilayer cylindrical body using a spiral method in which a steel strip is spirally wound around the outer circumferential surface of the cylindrical body and the adjacent edges of the thus wound steel strips are welded to form a multilayer cylindrical body. In the manufacturing device, an internal support device that supports the cylindrical body from the inside and has a female threaded portion at a position coinciding with the central axis of the cylindrical body, and supports both ends of a screw shaft that is screwed into the female threaded portion, and It is equipped with a cylindrical body feeding device that moves the cylindrical body in the axial direction by rotationally driving the cylindrical body, and a mechanism that supports the cylindrical body from below and rotates the cylindrical body around the axis. A multilayer cylindrical body manufacturing apparatus using a spiral method, comprising a cylindrical body rotation support device that is movable together with the cylindrical body.