JPH08112619A - Task head roll stand - Google Patents

Abstract

PURPOSE: To provide a task head roll stand which can change a face plate automatically. CONSTITUTION: In a task head roll stand 20 where a face plate 15 provided with a prescribed number of straightening roll 12, bearing boxes 13 for them and a roll position regulating device 14 for the straightening roll 12 is attached at a straightening stand 11 on a resistance welded tube production line being able to ascend, descend, horizontally move and to turn making the axial core of a resistance welded tube as the center, a moving carriage 17 to move the face plate to the direction crossing by a right angle to the resistance welded tube making line a is installed. Further, a face plate changing device 18 which attaches the face plate 15 on the moving carriage 17 onto the straightening stand 11 or removes the face plate 15 from the straightening stand 11 onto the moving carriage 17 is installed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a turk's head roll stand in an electric resistance welded pipe manufacturing facility, and more particularly to a turk's head roll stand capable of automatically changing a face plate.

[0002]

2. Description of the Related Art ERW pipes for water pipes, gas pipes and building materials, for example, are formed by continuously bending a strip-shaped thin plate derived from an uncoiler into a circular cross section or a rectangular cross section by an electric resistance weld pipe forming machine. After that, the thin plate is manufactured by seam welding the butted portions in the width direction and cutting it into a predetermined length. In this ERW pipe manufacturing line, a turks head roll stand is provided in order to correct the bending and twisting of the ERW pipe caused by thermal deformation during molding and uneven forming pressure. Hereinafter, a conventional turks head roll stand 100 will be described with reference to FIG.

As shown in FIG. 8, a conventional turks head roll stand 100 has a straightening stand 102 which is horizontally moved by a horizontal moving cylinder 101. The straightening stand 102 is attached to the lower part of the stand 102. A lift plate 104 that moves up and down by the lift cylinder 103 is provided. A large-diameter through hole 105 is formed in the center of the elevating plate 104, and a face plate 107 that is rotatable by a rotating cylinder 106 fixed to the upper part of the elevating plate 104 is attached to the through hole 105. There is. Further, four straightening rolls 108, respective axle boxes 109 and roll position adjusting devices 110 are attached to the face plate 107. The face plate 107 is attached to the through hole 105 of the elevating plate 104 via four arc-shaped pressing plates 111 that are bolted, and the upper portion of the face plate 107 has a large-diameter pin 112. Through the rod 106a of the rotating cylinder 106
Is pivoted on.

By the way, since there are many kinds of sizes and shapes of electric resistance welded pipes manufactured by one electric resistance welded pipe manufacturing line, the correction roll 108 incorporated in the turks head roll stand 100 is correspondingly replaced every time the product type is changed. Must be replaced. Therefore, at the time of conventional roll replacement, the face plate 107 on which the straightening roll 108 is mounted is removed from the straightening stand 102, lifted by an overhead crane or the like, and replaced with a new face plate 107 with the straightening roll 108 at the roll replacement location. Was installed in the straightening stand 102 in a suspended state of the overhead crane.

[0005]

However, in the roll exchange of the turks head roll stand 10 of the above-mentioned conventional technique, since the face plate 107 is moved in the suspended state by the overhead crane, the face plate 107 is moved up and down. When it is attached to the plate 104, the balance becomes unbalanced and tilts easily, a gap is created between the face plate 107 and the elevating frame 104, and it is necessary to manually press the face plate 107, which requires 3 to 4 workers. It was hanging. Further, the face plate 107 is connected to the through hole 1 of the elevating plate 104.
When attaching / detaching to / from 05, it is necessary to attach / detach via the four pressing plates 111 using a large number of bolts, and the large-diameter pin 112 is inserted / removed to / from the face plate 107 and the rod of the rotating cylinder 106. It is necessary to attach and detach 106a,
The work took time and effort.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a turks head roll stand capable of automatically replacing a face plate.

[0007]

A method according to the above-mentioned object.
Turks head roll stand described, a predetermined number of straightening rolls, a face plate provided with a roll position adjusting device for these axial boxes and straightening rolls, to a straightening stand on an electric resistance welded pipe manufacturing line, elevating, horizontally moving and In a Turks head roll stand rotatably attached around the axis of the electric resistance welded pipe, a moving carriage for moving the face plate in a direction orthogonal to the electric resistance welded pipe manufacturing line is provided, and the correction stand and the face plate are provided. In between, move the movable member,
A face plate exchanging device for assembling the face plate on the moving carriage to the straightening stand or for removing the face plate from the straightening stand onto the moving carriage is provided.

Particularly, in the turks head roll stand according to the second aspect, in the turks head roll stand according to the first aspect, the face plate exchanging device includes a push / pull means having a push / pull member for the face plate, which is the movable member. ,
It is configured to further include a clamp unit that clamps the face plate attracted to the correction stand by the other clamp member, which is the movable member, to the correction stand.

[0009]

In the turks head roll stand according to the first or second aspect of the present invention, when the rolls are replaced, the empty moving carriage is arranged to face the face plate of the correction stand, and the face plate is mounted on the moving carriage by the movable member of the face plate changing device. Then, remove this and replace it with a new face plate with rolls, then move the carriage with the new face plate again facing the orthodontic stand, and then move the face plate with the movable member of the face plate changing device. Since it is built in the orthodontic stand, the face plate can be automatically replaced without the need for manual labor of the operator.

Further, in the turks head roll stand according to a second aspect of the present invention, when the rolls are replaced, the push / pull member is pushed and pulled by the push / pull means to remove the old face plate from the straightening stand to the moving carriage or straighten from the moving carriage. Because a new face plate is drawn to the stand, and when the new face plate is assembled, the face plate drawn to the correction stand is clamped with a large force by the clamp member of the clamp means.
For example, by increasing the size of the push-pull means that may increase the cost, it is possible to achieve a relatively low cost without designing to obtain a clamping force that can withstand a large straightening pressure during ERW straightening work. The clamping force can be obtained with the equipment of.

[0011]

Embodiments of the present invention will now be described with reference to the accompanying drawings to provide an understanding of the present invention. In the figure, the production line direction of the electric resistance welded pipe is the X direction, the direction orthogonal thereto is the Y direction, and the vertical direction is the Z direction. FIG. 1 is an overall perspective view showing a roll replacement work state in a turks head roll stand according to an embodiment of the present invention, FIG. 2 is an enlarged perspective view showing a forming correction work state of the electric resistance welded pipe, and FIG. The enlarged front view, FIG. 4 (a) is an enlarged perspective view of an essential part showing a face plate pulling work state, FIG. 4 (b) is an enlarged perspective view of an essential part showing a face plate assembly completed state, and FIG. FIG. 6 is an enlarged sectional view of an essential part showing a mounting structure, and FIG. 6 is an enlarged sectional view of an essential part showing a clamp means for a face plate.
FIG. 7 is an enlarged plan view of an essential part showing the clamp means.

As shown in FIGS. 1 and 2, a turks head roll stand 10 according to an embodiment of the present invention is a straightening stand 11 provided on an electric resistance welded pipe manufacturing facility line a and a line downstream of the straightening stand 11. A face plate 15 that is attached to and detached from the side surface, and is provided with four straightening rolls 12, these shaft boxes 13, and a roll position adjusting device 14 for the straightening rolls 12.
And a moving carriage 17 that moves from a roll attaching / detaching position P1 near the downstream side of the straightening stand 11 to a retracted position P2 along a guide rail 16 extending in the Y direction orthogonal to the electric resistance welded pipe manufacturing equipment line a, and a straightening stand. It is installed in 11,
A face plate exchanging device 18 for attaching and detaching the face plate 15 to and from the correction stand 11 is provided.

As shown in FIG. 3, the correction stand 11 is a rectangular frame body, and vertically long through holes 19 are formed on the upper sides of both side frames (see also FIG. 1). With both ends loosely inserted in these through holes 19, above the orthodontic stand 11,
The elevating plate 20 in a vertically placed state is housed so as to be movable in the Y and Z directions. On the side of the straightening stand 11, a hydraulic horizontal moving cylinder 21 is arranged,
The rod 22 and the protrusion 2 on one side of the lift plate 20.
3 are connected to each other via a pin 25 that is loosely inserted in a vertically long slide hole 24 formed in the protrusion 23.

Rectangular mounting plates 26 are provided on both sides of the lower frame of the straightening stand 11, and both mounting plates 2 are attached.
Outer rails 27 extending in the Z-direction are fixed to the inner side surfaces of 6 facing each other. Between the outer rails 27, via the inner rails 28 provided on both side surfaces and extending in the Z direction, the rail base plate 2
9 is arranged so that it can be moved up and down, and a Y rail 30 is attached to the upper surface of the rail base plate 29. Lifting plate 2
0 is movably attached to this Y rail 30 via a slider 31 attached to its lower surface.

An elevating cylinder 32 is mounted in the center of the lower frame of the correction stand 11, and the rail base plate 29 is moved up and down along the outer rail 27 by moving the rod 33 in and out. The plate 20 moves up and down. A bracket 34 is fixed to one side of the lower part of the lifting plate 20, and the bracket 34 is
A hydraulic rotary cylinder 36 is axially mounted via a pin 35. The tip of the rod 37 is mounted on the lifting plate 2
Large-diameter through hole 38 formed in the center portion of 0 (see FIG. 1)
The rotary plate 39 is rotatably mounted on the projection 40 at the lower end of the rotary plate 39 via a pin 40a. The face plate 15 is detachably attached to the rotating plate 39. By rotating the rod 37 of the rotating cylinder 36 in and out, the rotating plate 39 is rotated around the electric resistance welded pipe manufacturing equipment line a. At both ends of the rotating plate 39, face plate exchanging devices 18 for attaching the face plate 15 on the moving carriage 17 to the correction stand 11 or removing the face plate 15 from the correcting stand 11 onto the moving carriage 17 are attached. Hereinafter, the face plate exchange device 18 will be described in detail with reference to FIGS.

The face plate exchanging device 18 includes a pair of long hydraulic cylinders 41 extending in the X direction, which is an example of pushing and pulling means for the face plate 15, and a clamp means attached to each corner of the surface of the rotating plate 39. It is provided with four short hydraulic cylinders 42 extending in the Y direction, which is an example. As shown in FIGS. 4 and 5, the hydraulic cylinder 41 is attached in a through hole at the center of both ends of the rotating plate 39 in a cantilever state protruding rearward, and is pushed and pulled in and out in the X direction. On the tip of a rod 41a, which is an example of a (movable member), engaging claws 44 that are engaged with externally protruding engaging pieces 43 are attached to the centers of both ends of the face plate 15. A large cantilevered guide cylinder 45, which also projects rearward, is mounted near the mounting portion of each hydraulic cylinder 41, and the tip of the guide rod 46 is fixed to the engaging claw 44 base side. Has been done.

As shown in FIG. 4A, the hydraulic cylinder 4
The rod 41a of No. 1 is projected to engage the engaging claw 44 with the engaging piece 43 of the face plate 15 placed on the placing table 47 of the moving carriage 17, and then the rod 41a is retracted, whereby the face plate on the placing table 47 is pulled. 15 is pulled toward the correction stand 11, and a long receiving plate 48 fixed to both lower end portions of the rotating plate 39 from the mounting surface 47a of the mounting table 47.
And is pressed against the rotating plate 39. At this time, since the guide rod 46 of the guide cylinder 45 is also taken in and out along the rod 41a to be taken in and out, it is possible to prevent the long rod 41a from being twisted and the engaging claw 44 from rotating. Further, since the rotating plate 39 is provided with the receiving plate 48, the movement of the face plate 15 becomes smooth and
As the hydraulic cylinder 41, a relatively inexpensive small cylinder can be adopted without using a large cylinder capable of supporting the entire weight of the face plate 15.

Further, as shown in FIGS. 4, 6 and 7, the hydraulic cylinders 42 are attached to the four corners of the surface of the rotating plate 39, and a clamp member is attached to the tip of the rod 42a which is inserted and removed in the Y direction. A thick clamp claw 49 which is another example of the (movable member) is fixed. As shown in FIG. 4B, the rod 42a of the hydraulic cylinder 42 is moved in and out to clamp or unclamp the face plate 15 pressed against the rotating plate 39.

In FIGS. 1 and 2, reference numeral 50 designates a moving carriage 1.
7, a cylinder for loading and unloading, reference numeral 51 for the rod, reference numeral 5
2 is an electric resistance welded pipe, and in FIG.
Reference numeral 54 is a guide rail, and reference numeral 55 is a handle.

Next, the operation of the turks head roll stand 10 according to one embodiment of the present invention will be described. As shown in FIG. 2, the electric resistance welded pipe 52 formed from a thin plate by the electric resistance welded pipe forming machine in the upstream moves the lifting plate 20 horizontally by the horizontal movement cylinder 21 while passing through the turks head roll stand 10. The elevating cylinder 32 is used to elevate the elevating plate 20, and the rotating cylinder 3
The rotation plate 39 is rotated by 6 to correct the deformation of the electric resistance welded pipe 52, and then the product is cut downstream to a predetermined length and commercialized.

At the time of roll replacement, first, as shown in FIG. 4A, the rod 51 of the loading / unloading cylinder 50 is projected to move the empty moving carriage 17 along the guide rail 16 to the roll attaching / detaching position P1, and then to the roll attaching / detaching position P1. By pulling in the rod 42a of the hydraulic cylinder 42, releasing the clamped state of the face plate 15 on which the old straightening roll 12 is mounted, and then projecting the rod 41a of the hydraulic cylinder 41,
The face plate 15 engaged with the engaging claw 44 via the receiving plate 48.
Is mounted on the mounting surface 47a of the mounting table 47. then,
The elevating plate 20 is lowered to engage the engaging piece 43 and the engaging claw 4.
4 to the position where the engagement of
Pull 1 in. Thereafter, as shown in FIG. 1, the rod 51 of the loading / unloading cylinder 50 is retracted to move the moving carriage 17 to the retreat position P2, and then the old straightening roll 12 on the mounting table 47 is moved through an overhead crane (not shown). Then, the face plate 15 with an attachment is lifted and moved to the roll exchange place, where it is replaced with a new face plate 15 with the straightening roll 12 and hung down on the mounting table 47 of the moving carriage 17.

Subsequently, the moving carriage 17 is moved to the roll attaching / detaching position P1 by means of the take-in / take-out cylinder 50, and FIG.
As shown in (a), the rod 41a of the hydraulic cylinder 41 is projected while the elevating plate 20 is in the lowered state, and then the elevating plate 20 is raised to engage the engaging claw 44 with the engaging piece 43 of the face plate 15. Then, as shown in FIG. 4B, the face plate 1
5 is pulled toward the correction stand 11 and pressed against the rotating plate 39. Next, as shown in FIGS. 6 and 7, by projecting the rod 42a of the hydraulic cylinder 42, the face plate 15 is clamped to the rotating plate 39 with a large force via the clamp claw 49.

As described above, when the rolls are exchanged, the empty moving carriage 17 is arranged at the roll attaching / detaching position P1, the face plate 15 is mounted on the moving carriage 17 by the hydraulic cylinder 41 of the face plate exchanging device 18, and then the retracted position is set. It is retreated to P2 and replaced with a face plate 15 with a new straightening roll 12, after which the new face plate 15 is again placed at the roll attachment / detachment position P1 by the moving carriage 17 and pulled to the rotating plate 39 by the hydraulic cylinder 41, and then Since the face plate 15 with the new straightening roll 12 is clamped by the hydraulic cylinder 42 and incorporated in the straightening stand 11, it is possible to automatically replace the face plate 15 without any manual labor of the operator. As a result, the roll exchanging work, which had previously required 3 to 4 workers, is sufficient for one person, and the work time, which took about 30 minutes, is shortened to 7 to 8 minutes. Considering the whole manufacturing equipment, The use time of the factory crane can be shortened, and the roll reassembling work for other equipment can be speeded up.

Further, the face plate 15 is used as the face plate exchanging device 18.
Since the hydraulic cylinder 41 that pushes and pulls the face plate 15 and the hydraulic cylinder 42 that clamps the face plate 15 to the straightening stand 11 are provided, for example, the hydraulic cylinder 4 that pushes and pulls the face plate 15
1, the equipment cost can be relatively reduced as compared with the case where the hydraulic cylinder 42 on the clamp side is omitted by enlarging the size of 1.

The present invention has been described above with reference to the drawings. However, the present invention is not limited to this embodiment, and even if there are design changes and the like without departing from the scope of the invention, the present invention is included. For example, in the embodiment, the face plate to which four straightening rolls are attached is shown, but the present invention is not limited to this, and for example, a face plate to which two straightening rolls are attached may be used.

Further, as the face plate exchanging device, the face plate pushing and pulling means and the clamp means are shown, but without being limited to these, any other face plate exchanging device such as the push and pull means also serving as the clamp means. But it's okay. Further, although the hydraulic cylinder is adopted as the push-pull means and the clamp means, the present invention is not limited to this, and any other driving means such as an electric cylinder may be adopted.

[0027]

The turks head roll stand according to the first and second aspects of the present invention is provided with a moving carriage for moving the face plate in the direction orthogonal to the ERW pipe manufacturing line as described above, and moves between the straightening stand and the face plate. Since the face plate on the trolley is assembled to the straightening stand, or the face plate exchanging device for removing the face plate from the straightening stand to the moving trolley is provided, it is possible to automatically replace the face plate without the need of the operator's hand. The face plate rearrangement time can also be shortened and the productivity of the line is improved.

Further, in the turks head roll stand according to the second aspect, as the face plate exchanging device, the push and pull means having the face plate push and pull member and the clamp means for clamping the face plate to the straightening stand are provided. The equipment cost can be reduced as compared with the case where the pulling means increases the pulling force of the face plate to omit the clamp means.

[Brief description of drawings]

FIG. 1 is an overall perspective view showing a roll replacement work state in a turks head roll stand according to an embodiment of the present invention.

FIG. 2 is an enlarged perspective view showing a state of forming and correcting the electric resistance welded tube.

FIG. 3 is an enlarged front view of the same.

FIG. 4A is an enlarged perspective view of an essential part showing a work state of drawing a face plate. (B) It is a principal part expanded perspective view which shows the completion state of face plate assembly.

FIG. 5 is an enlarged sectional view of an essential part showing a mounting structure of a push-pull means of a face plate.

FIG. 6 is an enlarged sectional view of an essential part showing a clamp means of a face plate.

FIG. 7 is an enlarged plan view of an essential part showing a clamp means.

FIG. 8 is a front view of a turks head roll stand according to a conventional means.

[Explanation of symbols]

 10 Turks Head Roll Stand 11 Straightening Stand 12 Straightening Roll 13 Axial Box 14 Roll Position Adjusting Device 15 Face Plate 16 Guide Rail 17 Moving Cart 18 Face Plate Changing Device 19 Through Hole 20 Elevating Plate 21 Horizontal Moving Cylinder 22 Rod 23 Projection 24 Sliding Hole 25 Pin 26 Mounting Plate 27 Outer Rail 28 Inner Rail 29 Rail Base Plate 30 Y Rail 31 Slider 32 Lifting Cylinder 33 Rod 34 Bracket 35 Pin 36 Rotating Cylinder 37 Rod 38 Through Hole 39 Rotating Plate 40 Projection 40a Pin 41 Hydraulic Cylinder 41a Rod 42 Hydraulic cylinder 42a Rod 43 Engagement piece 44 Engagement claw 45 Guide cylinder 46 Guide rod 47 Mounting table 47a Mounting surface 48 Receiving plate 49 Clamping claw 50 Inlet / outlet cylinder 51 Pad 52 ERW pipe 53 In-and-out member 54 Guide rail 55 Handle a ERW pipe manufacturing equipment line P1 Roll attachment / detachment position P2 Evacuation position

 ─────────────────────────────────────────────────── ─── Continued Front Page (72) Inventor Eizo Uchiyama 59 Nakahara 46, Tobata-ku, Kitakyushu City, Fukuoka Prefecture 59 Nittetsu Plant Design Co., Ltd.

Claims (2)

[Claims] 1. A predetermined number of straightening rolls, a shaft plate on which these shaft boxes and a roll position adjusting device for the straightening rolls are arranged, are moved up and down to a straightening stand on an electric resistance welded pipe manufacturing line,
In a turks head roll stand rotatably mounted around a horizontal movement and an axial center of an electric resistance welded pipe, a moving carriage for moving the face plate in a direction orthogonal to the electric resistance welded pipe manufacturing line is provided, and the correction stand and A face plate exchanging device is provided between the face plate and the face plate to move the movable member to assemble the face plate on the moving carriage to the straightening stand, or to remove the face plate from the straightening stand onto the moving carriage. Turks head roll stand featuring. 2. The face plate exchanging device pulls the face plate pulled to the correction stand by a push-pull means having a push-pull member for the face plate, which is the movable member, and a clamp member, which is the other movable member. The turks head roll stand according to claim 1, further comprising: a clamping unit that clamps the straightening stand.