JPH0753827Y2 - Bead remover in ERW pipe manufacturing equipment - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] This invention is a rotary cutter that removes the end of the weld bead surplus portion formed at the time of horizontal joining of the preceding plate material and the following plate material in the electric resistance welded pipe manufacturing facility. The present invention relates to a bead remover which is characterized by its moving and rotating mechanism.

[Conventional technology]

In the electric resistance welded pipe manufacturing equipment, first, in the entry process, the strip coil and the end portions of the strip coil are laterally joined by flash butt welding to form an endless plate material, and then the plate material is used in the forming mill breakdown mill and cluster side. Rolls and fins are gradually bent by a fin pass mill to form a tube, and then the seam part of the open seam pipe is welded in the welding process, and the weld bead extra parts on both the upper and lower sides of the plate material are passed through the mill line without maintenance. In this case, the breakdown mill causes damage to the mill due to overloading, and the contact tip and the bite for bead removal on the inner and outer surfaces are damaged during the welding process. It is sandwiched from above and below by a long cylindrical cutter, and its rotation causes welding The de surplus up portion was cut off.

However, since it is a sufficiently long cylindrical cutter that spans the entire width of the plate material, it becomes impossible to completely remove the surplus portion as the plate material becomes wider in accordance with the pipe manufacturing size. Since it is manually corrected using a grinder, it takes a long time to correct, the operating rate of the equipment is reduced, and there is no guarantee that it can be completely corrected so as not to cause the above-mentioned line trouble.

In order to eliminate such inconvenience, if the weld bead surplus portions (50 to 100 mm at the most) on both sides of the seam portion of the open seam pipe formed in the forming process are removed, the contact tip of the welder will be used in the welding process. , Do not damage the bite for bead removal on the inner and outer surfaces arranged in the subsequent stage, and avoid the damage of the mill by breaking back the roll for the extra part remaining in the center of the plate width direction in the breakdown mill. Focusing on what can be done, the present inventor has arranged a pair of stands facing each other across the plate pass line so that they can approach or separate from each other in the width direction of the plate, and a pair of rotating cutters are provided above and below the opposite side faces of these stands. A bead remover that cuts and removes only the widthwise edge of the horizontal weld bead surplus that is provided by welding the preceding and following plates with these rotary cutters. Ba has been developed and has already filed an application (Japanese Patent Application No. 63-332115).

[Problems to be solved by the device]

However, a pair of upper and lower chocks that pivotally support a rotary cutter are attached to each stand so that they can move up and down, and an arm that extends to the side position of the upper chock is attached to the lower chock as a lifting synchronization mechanism for these chocks. A parallel rack is provided at the opposite part of the upper chock and the pinion rotatably mounted on the stand is meshed between the parallel racks, and the upper chock is supported by a single pressure reduction cylinder. Since the chock of was set to be able to approach or separate by the same amount by sandwiching the center position between the cutter support centers, it is good when the plate thickness of the plate material on the plate material pass line (the lower surface of the plate material) is constant, When the plate thickness changes, the amount of cut in the top and bottom of the plate material varies, so it is necessary to adjust the upper and lower chock positions each time the plate thickness changes. That. In addition, since the stand has a chock sliding surface, it is difficult to process chips and maintenance is not easy. Further, since a hydraulic motor for rotating the rotary cutter is provided for each chock, there is an inconvenience such as facility cost.

[Purpose of device]

This invention has been made to solve the above-mentioned problems, and enables a pair of upper and lower rotary cutters to be driven by a single motor, and enables easy adjustment of the upper and lower cutter cutting amounts according to the plate thickness. The purpose is to

[Means for Solving the Problems]

The bead remover in the electric resistance welded pipe manufacturing equipment of this invention is
As shown in the drawing, a pair of stands 1 that are opposed to each other across the plate pass line L in the plate width direction are arranged, and a pair of rotary cutters 10A, 1A are provided above and below the opposite side surfaces of the stands 1.
In the bead remover equipped with 0B, the stand 1
In addition, a pair of support levers 7A and 7B are attached above and below the plate material path line L so as to be rotatable in the vertical direction independently of each other. Rotation actuating actuators 4A and 4B are connected to these support levers 7A and 7B, respectively. And each support lever 7
A, 7B rotatably attached to the rotary cutter 10A, 10B at the tip, and rotatably attached gears 12A, 12B meshing with pivot shafts 3A, 3B at the respective support levers 7A, 7B base end, Corresponding gears 12A, 12B for each support lever 7A, 7B
Interlocking mechanism 11A, 12A that interlocks with the rotary cutters 10A, 10B
(11B, 12B) is provided, and the drive device 13 is connected to one of the gears 12A (12B), and the above-mentioned object is achieved by such a configuration.

[Action]

When the rotation actuating actuators 4A and 4B are extended (or retracted), the support levers 7A and 7B are rotated independently of each other in the direction of approaching (or separating) from the plate material pass line L, so that the tips of the support levers 7A and 7B are moved. Attached rotary cutter 10A, 1
0B approaches (or separates) from the plate material M.

Further, when the drive device 13 is operated, the gears 12A and 12B are rotated, the pinions 11A and 11B are rotated together, and the rotary cutters 10A and 10B are also rotated.

〔Example〕

 An embodiment of the present invention will be described below with reference to the drawings.

In the figure, 1 is a stand, and a plate material pass line L is placed on a support base 2.
Are arranged on both sides of the plate material 1, and the stands 1 and 1 can approach or separate in synchronization with the plate material width direction so as to cope with a change in the width of the plate material M.

3A and 3B are support shafts that are rotatably provided on the stand 1 and that are provided above and below the plate pass line L, respectively.

4A and 4B are rotary actuating actuators (hydraulic cylinders in the embodiment), which are trunnion-supported by a stand 1 via a shaft 5 and a bracket 6 and are arranged one by one in the front and rear of the plate material path direction with the support shafts 3A and 3B sandwiched therebetween. Has been done.

7A and 7B are support levers, the base end portions of which are attached to the support shafts 3A and 3B, and are arranged so as to face each other across the plate material pass line L level, and are independent of each other by the rotary actuating actuators 4A and 4B. It can be rotated up and down.

Bearings 8A, 8B are formed integrally with the tip ends of the support levers 7A, 7B along a direction perpendicular to the plate material pass line L, and shafts 9A, 9B are rotatably attached to these bearings 8A, 8B. Has been.

10A and 10B are rotary cutters, which are mounted on one end of the shafts 9A and 9B so as to face the upper and lower surfaces of the plate material M to be transported on the plate material pass line L, and the horizontal joint welding beads of the upper surface and the lower surface of the plate material M. Both ends of the extra part can be removed by cutting at the same time by about 80 to 100 mm.

Pinions 11A and 11B are attached to the other ends of the shafts 9A and 9B.

Reference numerals 12A and 12B denote gears that mesh with each other. The gears 12A and 12B are rotatably attached to one end portions of pivot shafts (support shafts 3A and 3B) of the support levers 7A and 7B and mesh with the pinions 11A and 11B, respectively. There is. One of the gears 12A and 12B (the lower gear 12B in the embodiment) has a coupling device 14 (a hydraulic motor in the embodiment) installed on the stand 1.
Connected through.

In this embodiment, the upper support lever 7A is provided with a connecting arm 15 sandwiching the support shaft 3A and extending on the opposite side thereof, and
A connecting arm 16 extending to the tip side of the lower support lever 7B.
Are connected in series, and a support lever is provided via these connecting arms 15 and 16.
7A, 7B has been described with respect to an example in which the rotary actuating actuators 4A, 4B are respectively connected, but the present invention is not limited to this.For example, conversely, the connecting arm 15 is continuously provided at the free end of the upper support lever 7A,
The lower support lever 7B may be provided with a connecting arm 16 that extends on the opposite side of the support shaft 3B, sandwiching the support shaft 3B. Further, the rotary actuating actuators 4A and 4B need not be vertical as in the embodiment as long as they correspond to the way of providing the connecting arms 15 and 16.

Further, in this embodiment, the rotary cutters 10A and 10B are rotatable with respect to the pivot shafts (support shafts 3A and 3B) of the support levers 7A and 7B via the pinions 11A and 11B that are coaxial and integrally provided with the rotary cutters 10A and 10B. Although the example of rotating the gears 12A and 12B attached thereto has been described, it goes without saying that the interlocking mechanism may be a combination of a sprocket and a chain instead of the gear mechanism as in the embodiment.

In the above configuration, when the driving device 13 is operated, the gear
12A and 12B are interlocked with each other in the opposite directions, and the pinions 11A and 11B meshed with the gears 12A and 12B are interlocked with each other. The individual rotary cutters 10A and 10B can be rotated.

Further, when the rotation actuating actuators 4A and 4B are extended (or retracted), the support levers 7A and 7B are rotated independently of each other in the direction of approaching (or separating) from the plate material pass line L. Therefore, the rotary cutters 10A and 10B are rotated. Is rotated up and down about the center of rotation of the support levers 7A and 7B (support shafts 3A and 3B) to approach (or separate from) the ends of the transverse weld bead extra parts of the upper and lower surfaces of the plate material M, It becomes possible to independently obtain a predetermined cut amount.

[Effect of device]

As described above, according to the present invention, the rotary cutters are attached to the tips of the pair of upper and lower support levers provided on the stand, and the support levers are independently rotated by the rotary actuating actuator, so that the respective cut amounts can be easily obtained. In addition, a pair of upper and lower gears that mesh with each other are rotatably attached to the pivot shaft of the support lever, an interlocking mechanism is provided between the corresponding gear and the rotary cutter, and one unit is provided through the gear and the interlocking mechanism. Since the rotary cutter can be rotated by the drive device, it is possible to easily adjust the vertical cut amount according to the change in plate thickness, and only one drive device is required to rotate the rotary cutter. Cost can be reduced. Further, unlike the conventional case, since there is no chock sliding surface where chips enter the stand, maintenance becomes easy.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the present invention, FIG. 2 is a side sectional view taken along the line A of FIG. 1, and FIG. 3 is a plan view. 1 ... stand, 2 ... support base, 3A, 3B ... support shaft (support lever pivot shaft), 4A, 4B ... rotation actuating actuator, 5 ... axis, 6 ... bracket, 7A, 7B ... … Support levers, 8A, 8B …… Bearings, 9A, 9B …… Shafts, 10A, 10B…
… Rotary cutter, 11A, 11B …… Pinion, 12A, 12B ……
Gears, 13 ... Drive device, 14 ... Coupling, L ... Plate material pass line.

Claims (1)

[Scope of utility model registration request] 1. A bead remover having a pair of stands facing each other across a plate pass line in the plate width direction, and a pair of rotating cutters provided on the opposite side surfaces of the stands above and below the stand. A pair of support levers are mounted above and below the pass line so as to be rotatable independently of each other in the vertical direction, and each of these support levers is provided with a rotation actuating actuator. Attach the cutter rotatably,
Further, gears that mesh with each other are rotatably attached to the pivot shafts of the respective support lever base end portions, and each support lever is provided with an interlocking mechanism that interlocks a corresponding gear and a rotary cutter, and one of the gears A bead remover in an electric resistance welded pipe manufacturing facility, characterized in that a drive device is connected to the gear.