JPH05123919A - Drum type running shearing machine - Google Patents

Abstract

(57) [Summary] [Purpose] To facilitate the acceleration of the drum before shearing with a drum-type shearing machine and to allow high-speed plate material to easily pass through the shearing machine. [Structure] Gear 3 regardless of whether drums 11 and 12 are opened or closed
1, 32 or spindle gears rotate the drums 11 and 12 synchronously. These drums 11 and 12 are combined into one axle box 1
It is possible to move up and down to the housing 18 via 7,
The drums 11 and 12 are rotatably supported in the unit 7 through eccentric rings 15 and 16. The eccentric rings 15 and 16 are rotationally controlled by a servo motor and a control device to open and close the upper and lower drums 11 and 12, and hold the upper and lower drums 11 and 12 at the open miscut position to secure an acceleration time. Also, the upper and lower drums 11,
12 is closed to perform shearing at the shearing position so that shearing at high speed can be supported.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drum-type running shear for shearing a plate fed at a high speed, and facilitates acceleration of a drum before shearing and allows a high-speed plate to easily pass through the shear. It was made possible.

[0002]

2. Description of the Related Art In recent years, in hot strip rolling as well as in the case of cold rolling, continuous rolling has been carried out in order to improve the yield and the rolling efficiency by reducing the defective portions at the front and rear ends. Is coming. In such hot strip continuous rolling, before feeding the rolled material rolled by the rough rolling mill to the finishing rolling mill, the preceding rolled material and the following rolled material are joined and continuously supplied,
A finishing mill is used to finish the product into a thin plate of a specified thickness and it is wound by two down coilers.
When a predetermined amount is wound around one of the two down coilers, it is cut and wound around the other down coiler.

[0003] Such a thin plate which is continuously hot-rolled has a high line speed in a rolling line and must be cut at a high speed even when it is cut, and is sheared using a drum shear or the like. There is. For example, as a device for cutting a plate material fed at high speed, a Japanese Patent Publication No. 61-53172 is available.
There is a drum shear disclosed in Japanese Patent Publication No. JP-A-2003-242, in which blades are fixed to the outer circumference of a pair of upper and lower drums along the longitudinal direction of the drum, and the upper and lower drums are mechanically connected via a power transmission mechanism such as a gear. It is configured to rotate in synchronization and shear.

[0004]

However, in the above-mentioned drum shear, since the plate material is cut by the upper and lower blades before the pair of upper and lower drums makes one revolution, it is possible to sufficiently accelerate the stopped drum. In order to be able to cope with the line speed or not, it is necessary to use a large drive motor. Furthermore, when a drum shear or the like is installed on the pass line, there are problems that the tip of a thin plate that is passed at high speed comes into contact with the lower drum, or flying occurs.

The present invention has been made in view of the above-mentioned problems of the prior art, and is a drum-type driving system capable of accelerating with a small driving force while ensuring a sufficient miscut time up to the speed of a plate material fed at high speed. It is intended to provide a shearing machine. Another object of the present invention is to provide a drum-type running shears that allows the leading edge of a thin plate to be fed at high speed to be easily passed without causing flying or the like.

[0006]

In order to solve the problems of the above-mentioned prior art, the drum-type running shears of the present invention comprises:
A pair of upper and lower drums are arranged across the pass line, and a pair of shear blades are attached to the outer circumference of the drum in the longitudinal direction of the drum. An appropriate amount of eccentricity with respect to the axis of the drum shaft is provided on the outer circumference of the bearing that supports the drum. In a drum type running shear having a pair of eccentric rings, the pair of eccentric rings are rotatably attached to a shaft box and the eccentric phase is set to a lower drum when the upper drum is at a bottom dead center. Is provided with a gear for rotating the eccentric ring so as to become the top dead center, and a pinion gear shaft that meshes with the gear to rotate the eccentric ring to open and close the shafts of the upper and lower drums is provided. Gears of the same speed ratio are provided between the shafts of the drums and between the driving upper and lower spiders of the drum so that the upper and lower drums can be synchronously rotated even when the gears between the drum shafts are open. Eccentric ring drive pinion gear shaft Each is provided a driving source and is characterized in that a control means for controlling opening and closing the drum shaft shear position and miscut position.

The drum-type running shears of the present invention are
In the above invention, at least one drive type table roller for supporting a plate material passing therethrough is provided on the lower drum arranged above when the drum is stopped, other than the position where the shear blade is attached. ..

Further, the drum-type running shears of the present invention are characterized in that, in the above-mentioned two inventions, the upper and lower drum shafts and the eccentric ring driving pinion shaft are provided in an integral shaft box. is there.

The drum-type running shears of the present invention are
The third aspect of the invention is characterized in that the integral shaft boxes arranged at both ends of the drum shaft are connected by tie bars to be detachable from the housing in a cassette manner.

Further, in the drum type running shears of the present invention according to the first aspect of the present invention, the lower drum disposed above when the drum is stopped, other than the mounting position of the shear blade,
A plurality of drive type table rollers for supporting a passing plate material are provided, and the pair of upper and lower drum shafts can be raised so that the upper surfaces of the plurality of rollers are close to the same surface as the roller table on the entrance side and the exit side. is there.

[0011]

According to this drum-type running shear, a gear mounted on the eccentric ring on the outer circumference of the bearing that supports the pair of upper and lower drums is used when the phase of the eccentric ring is at the bottom dead center of the upper drum. The pinion gear shaft is rotated so that the upper and lower drums are brought into the shearing position or the miscut position by rotating the pinion gear shaft. Further, gears with the same speed ratio are provided between the shafts of the upper and lower drums and between the drum driving upper and lower spindles, and the upper and lower drums are synchronously rotated even in an open state where the gears between the drum shafts do not mesh. When accelerating the upper and lower drums, the control means controls the drive source of the pinion gear shaft to hold the upper and lower drums in the miscut position, and the drum shaft drive source performs the required acceleration. On the other hand, in the case of shearing after acceleration, the control means controls the rotation of the pinion gear shaft to perform shearing so that the shearing blades of the upper and lower drums are in the meshing position when the upper and lower drums in the accelerated state are closed. To allow for high-speed shearing.

According to this drum type running shear,
A drive type table roller is provided in the upper position when the lower drum is in a stopped state.When the table roller is passed through, the table roller is positioned above the lower drum and is relatively fast to the tip of the thin plate that is fed at high speed. The speed is reduced so that the can be passed through smoothly so that no flying occurs.

Further, according to this drum type running shearing machine, the upper and lower drum shafts and the pinion shaft for driving the eccentric ring are put in an integral shaft box to be supported, and the reaction force accompanying the shearing is supported. It's easy.

According to the drum type running shears,
The shaft box that supports the upper and lower drum shafts is connected to the left and right ends by tie bars, making it easy to attach and detach from the housing and to facilitate maintenance.

Further, according to this drum-type running shear, a plurality of drive type table rollers are provided in a portion of the upper and lower drums which is located above the lower drum in a stopped state, and the upper and lower drum shafts are raised to raise the table. The roller is positioned near the pass line, and the relative speed with the tip of the thin plate fed at high speed is reduced so that the thin plate can pass through smoothly, and flying is prevented.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings. 1 to 4 relate to an embodiment of the drum-type running shears of the present invention. FIG. 1 is a vertical sectional view, FIG. 2 is a horizontal sectional view, FIG. 3 is a vertical sectional view of a drive unit, and FIG. It is a top view of a drive device portion. This drum type running shears 10
For example, it is installed in front of a down coiler of a hot strip continuous rolling line and used to cut a strip (sheet material) sent at high speed.

In this drum type running shearing machine 10, upper and lower drums 11 and 12 are arranged in the width direction of the thin plate W by sandwiching the thin plate (plate material) W above and below the pass line L, and the drum shafts 11a at both ends thereof. , 12a are attached to the bearings 13 and 14, and the bearings 13 and 14 are eccentric to the outer periphery of the bearings 13 and 14 by an appropriate amount, the vertical eccentricity is the same, and the eccentric phase is the upper drum 11.
Eccentric ring 1 in which the lower drum 12 becomes the top dead center when is the bottom dead center
5 and 16 are attached and rotatably supported by a single upper and lower axle box 17. As a result, the upper and lower drum shafts 11a and 12a can rotate the eccentric rings 15 and 16 so as to sandwich the pass line L and move toward or away from each other by the same movement amount according to the eccentricity amount. When the upper drum 11 is at the top dead center, the lower drum 12 is in the meshing state in which the lower drum 12 is located at the top dead center.
Is in the state of open bottom dead center.

This upper and lower integrated shaft box 17 is a housing 1
8 can be lifted up and down by lift cylinders 19 mounted on both sides of the bottom of the housing 8, and can be held down by presser blocks 21 that can be slid by the slide cylinders 20 on both sides of the upper part of the housing 18. By changing the thickness of the stopper 22 provided in the shaft 21, the vertical position of the shaft box 17 with respect to the housing 18 can be changed so that the upper and lower drums 11 and 12 can be simultaneously moved up and down. Further, shearing blades 23 and 24 are attached to the outer circumferences of the upper and lower drums 11 and 12 along the drum length direction (drum axis direction).
The upper and lower shaft box 17 supporting 12a is a drum shaft 11.
Axial boxes that support the left and right ends of a and 12a are connected by tie bars 25, so that the left and right axial boxes 17 can be taken out from the housing 18 or mounted as an integrated cassette type.

A driving system 30 for shearing the thin plate W by synchronously rotating the upper and lower drums 11 and 12 to which the shearing blades 23 and 24 are attached is provided at both ends of the drum shafts 11a and 12a of the upper and lower drums 11 and 12, respectively. Gears with the same number of teeth 31, 32
Are attached so that the upper and lower drum shafts 11a and 12a are brought into close contact with each other so that they can rotate synchronously. The drum shaft 1 of the upper and lower drums 11 and 12
The outputs of one drive motor 33 are set to 1a and 12a.
Two spindles 35, 3 of the gearbox 34 to be split
6 are connected via a universal joint, and gears 37 and 38 having the same number of teeth are attached to the respective spindles 35 and 36 in the gear box 34 so as to mesh with each other, and the upper and lower drums 11 and 12 are separated from each other. Even in this state, the two spindles 35 and 36 can be rotated synchronously.

Therefore, the upper and lower drums 11 and 12 have shear blades 23 and 24 which are close to each other by the eccentric rings 15 and 16.
Even in a shearable state by the eccentric rings 15 and 16, they are separated from each other by a miscut state (upper and lower drum 1
Even if the shearing blades 23 and 24 do not mesh with each other even if the rotating blades 1 and 12 are rotated, the drum shafts 11a and 12a have the gears 31 and 32 at both ends thereof and the gears 37 and 3 in the gear box 34, respectively.
8, or gears 37 in the gearbox 34,
The meshing of only 38 causes synchronous rotation, and the upper and lower shear blades 23 and 24 once set do not shift in phase.

An eccentric ring 1 for opening and closing the upper and lower drums 11 and 12 to obtain a sheared state and a miscut state.
The drive system 40 of 5, 16 has gear wheels 41, 42 having the same number of teeth integrally formed on the outer ends of both eccentric rings 15, 16, and meshes between the upper and lower eccentric rings 15, 16. 1
The pinion gear 45 of the eccentric ring driving pinion gear shaft 44 rotatably supported by the shaft box 17 via the bearing 43 meshes with the gear 42 of the second eccentric ring 16. A servomotor 46 as a drive source for opening and closing the drum shaft is connected to the eccentric ring driving pinion gear shaft 44 through a gear box 47 and a universal joint, and the rotation amount is controlled to drive the upper and lower drums 11 and 12. A control device 48 is provided to set the shear position or the miscut position.

The control device 48 includes the upper and lower drums 11,
Position signals of 12 shear blades 23 and 24 and eccentric rings 15 and 16
Position signal of the eccentric ring 15,
The rotation amount of 16 is controlled.

Next, the shearing process by the drum-type running shears 10 thus constructed will be described with reference to FIG.

In preparation for shearing, as shown in FIG. 5 (a), as shown in FIG. 5A, the shaft box 17 supporting the drum shafts 11a and 12a of the upper and lower drums 11 and 12 is adjusted to the thickness of the lifting cylinder 19 and the stopper 22 of the pressing block 21. It is thickened and set in the lowered position so that the upper and lower drums 11 and 12 are positioned equidistantly above and below the pass line L.

After that, the servomotor 46 of the drive system 40 is driven to change the rotational positions of the eccentric rings 15 and 16 into the gearbox 4.
7. The pinion gear shaft 44 for driving the eccentric ring is rotated through the universal joint to bring it into a miscut state in which a gap is formed between the tips of the upper and lower shear blades 23, 24. The miscut state is, for example, the upper and lower shear blades 23, 24.
While the eccentric rings 15 and 16 are returned to the shear position where they mesh with each other by 300 degrees, a gap of about 30 mm is formed between the tips of the shear blades 23 and 24. Such a state is manufactured in advance. It can be obtained by the shape of the eccentric rings 15 and 16.

After the miscut state is set in this way, the upper and lower drums 11 and 12 are accelerated by the drive motor 33 to a predetermined high speed state and held. When accelerating the upper and lower drums 11 and 12, the positions of the shearing blades 23 and 24 are set to the upper and lower drums 1.
Since there is no meshing and shearing regardless of the rotational positions of 1 and 12, it is possible to accelerate with a sufficient acceleration time and to accelerate with a small capacity drive motor 33.

After the upper and lower drums 11 and 12 are accelerated to a predetermined high speed state in this way, as shown in FIG. 5B, the servo motor 46 of the drive system 40 is used to cut the thin plate W which is the material to be sheared. When driven, the eccentric ring driving pinion gear shaft 44 is rotated through the gear box 47 and the universal joint to rotate the eccentric rings 15 and 16, and the upper and lower shear blades 23,
Put in a shearing state where 24 meshes.

This shearing state is obtained, for example, by rotating the eccentric rings 15 and 16 from the above-mentioned miscut state. To cut the thin plate W to a predetermined length, the eccentric rings 15 and 16 are servod. The time for which the motor 46 rotates 300 degrees, the rotation speed of the upper and lower drums 11 and 12, and the shearing blade 2
This is performed by controlling the control device 48 so that the meshing position of 3, 24 becomes a predetermined position of the thin plate W.

Next, as shown in FIG. 5 (c), the eccentric rings 15 and 16 are rotated even after the thin plate W is sheared, for example, further rotated from the shear position by 300 degrees so as to be stopped. The thin plate W is not cut in the first rotation and is in a miscut state. At the same time, deceleration of the upper and lower drums 11 and 12 is started and stopped.

After this, as shown in FIG. 5D, the shearing blades 23, 24 are stopped at predetermined positions by idling rotation of the drive motor 33 for the upper and lower drums 11, 12 in preparation for the next cutting. At the same time, the eccentric rings 15 and 16 are returned from the shearing position to the shearing preparation position 300 degrees before.

According to the drum-type running shears 10 as described above, the acceleration time of the upper and lower drums 11 and 12 can be sufficiently set, so that the drive motor 33 for driving the upper and lower drums 11 and 12 has a small capacity. And with
The servo motor 46 and the control device 48 can easily change the shear blades 23 and 24 between the shear position and the miscut position.

Further, the upper and lower drum shafts 1 are provided in one shaft box 17.
Since 1a and 12a are supported, the reaction force associated with shearing can be supported by the axle box 17 portion.

Further, since the upper and lower drum shafts 11a and 12a are supported by one shaft box 17, the drum shafts 11a and 12a and the bearings 13 and 14 can be replaced easily.

Next, the drive type table roller 50 equipped in the drum type running shearing machine 10 will be described.

This drive type table roller 50 is for guiding and supporting a high speed thin plate W sent from a finish rolling machine or the like when the drum type running shearing machine 10 is in a stopped state. As shown in FIG. 2, it is arranged at a position deviated from the mounting position of the shearing blade 24 of the lower drum 12 by 90 degrees.

The table roller 50 is divided into two in the width direction of the thin plate W, and one in the front and rear in the pass line direction.
A total of two sets (four sets) of rollers 51 and 52 are rotatably supported by the lower drum 12, and the outer peripheral surfaces of the rollers 51 and 52 are positioned above the outer diameter of the lower drum 12.

In order to drive these rollers 51, 52,
A roller drive shaft 53 is provided on the central shaft portion of the lower drum 12 so as to be rotatable relative to the lower drum 12, and a gear 54 attached to the roller drive shaft 53 meshes with an idle gear 55. On both sides of the roller 51,
Gears 56 and 57 attached to 52 mesh with each other. A roller driving motor 58 supported by the housing 17 is connected to one end of the roller driving shaft 53.

Therefore, while the drum-type running shears 10 are stopped, the shearing blade 22 of the lower drum 12 is placed sideways and the table roller 50 is positioned above, and the table driving roller 58 is driven by the roller driving motor 58. If the two rollers 51 and 52 of 50 are rotated, the drum type shearing machine 1
The thin plate W passing through the zero portion can be guided and supported on the pass line L.

At this time, the roller 5 of the table roller 50
Depending on the size of the rollers 1, 52, the rollers 51, 52 may not be at the same height as the pass line L by simply rotating the lower drum 12 by 90 degrees and moving the rollers 51, 52 upward. In this case, , The shaft box 17 is lifted by the lifting cylinder 19 and the positions of the upper and lower drums 11 and 12 are set to the housing 18
Try to rise and adjust against.

Also, the rollers 51 in the lower drum 12,
52 in addition to the inlet side and the outlet side of the housing 18
A plurality of driving large-diameter rollers 59 are arranged, and the large-diameter rollers 59 and the rollers 51, 5 in the lower drum 12 are arranged.
A drive type roller 60 is swingably attached between the two rollers so that it can be positioned on the pass line L when passing through the plate and retracted downward when shearing.

A case of passing the leading end of the thin plate W in the drum type running shears 10 equipped with such a drive type table roller 50 will be described with reference to FIG.

In the sheared state of the thin plate W, as shown in FIG. 6A, since the upper and lower drums 11 and 12 are arranged at equal distances above and below the pass line L, the lower drum 12 is raised. The rollers 51 and 52 are positioned on the pass line L. Therefore, the shaft box 17 is slightly lowered by the lifting cylinder 19 to replace the stopper 22 of the pressing block 21 with a thin one, and the shaft box 17 is lifted again to lift the lower drum 12.

Thereafter, as shown in FIG. 6 (a), the lower drum 12 is rotated by 90 degrees (at this time, the upper drum 11 is automatically rotated by 90 degrees synchronously) so that the table roller 50 is placed on the upper side. In addition, the swingable roller 60 is also positioned on the pass line L.

After the rollers 51, 52 of the drive type table roller 50 and the other rollers 59, 60 are arranged at predetermined positions, the rollers 51, 52, 59, 60 are set to have predetermined peripheral speeds. Drive to.

After the preparation is completed in this way, the leading end of the thin plate W is passed.

Then, there is almost no relative speed between the rollers 51 and 52 of the drive type table roller 50, the other rollers 59 and 60, and the thin plate W, and the lower drum 12 is hit by the leading end of the thin plate W to pass the plate. It is possible to prevent it from becoming difficult and to prevent flying from occurring, and to make it pass smoothly.

In the above embodiment, the number of drive type table rollers is not limited to two in the front and rear directions in the pass line direction, but may be one or more. The width direction is not limited to two divisions, but one long roller may be used, or the number of divisions may be further increased. Further, it goes without saying that the constituent elements may be modified within the scope of the invention.

[0048]

As described above in detail with reference to the embodiments, according to the drum type running shear of the present invention, the upper and lower parts 1
Rotate on the pinion gear shaft by meshing the gears attached to the eccentric ring on the outer circumference of the bearings that support the pair of drums so that when the phase of the eccentric ring is at the bottom dead center of the upper drum, it becomes the top dead center of the lower drum. In addition, since gears with the same speed ratio are provided between the shafts of the upper and lower drums and between the drum driving upper and lower spindles, by rotating the pinion gear shaft, the upper and lower drums can be placed in the shearing position or the miscut position, Even in the open state where the gears between the drum shafts do not mesh with each other, the upper and lower drums can be synchronously rotated.

Thus, when accelerating the upper and lower drums, the drive source of the pinion gear shaft can be controlled by the control means to hold the upper and lower drums in the miscut position, and a sufficient acceleration time can be obtained in this state. Thus, the upper and lower drums can be accelerated by a small-capacity drive source.

On the other hand, in the case of shearing after acceleration, the rotation of the pinion gear shaft is controlled by the control means so that the shearing blades of the upper and lower drums are brought into the meshing position when the upper and lower drums in the accelerating state are closed. The thin plate can be sheared at high speed only by control without rotating the eccentric ring at high speed.

According to this drum-type running shear,
Since the drive type table roller is provided in the upper position when the lower drum is stopped, the table roller is positioned above the lower drum when the plate is passed, and the table roller is moved relative to the tip of the thin plate that is fed at high speed. The speed can be reduced to allow smooth passage, and flying can be prevented.

Further, according to this drum-type running shear, since the upper and lower drum shafts and the pinion shaft for driving the eccentric ring are put in and supported by the integral shaft box, the reaction force due to shearing is applied to the shaft box part. It is possible to support with, and it is possible to easily replace the drum shaft and the bearing.

According to this drum type running shear,
The shaft box that supports the upper and lower drum shafts is connected to the left and right ends by tie bars, so the left and right shaft boxes can be detached from the housing or installed in a cassette style, further simplifying maintenance. ..

Further, according to this drum type shearing machine, a plurality of drive type table rollers are provided in a portion of the upper and lower drums located above the lower drum in a stopped state, and the upper and lower drum shafts are raised to move the table rollers. Since it is positioned near the pass line, it is possible to reliably support and feed the leading edge of the thin plate that is fed at high speed, and to prevent flying and the like.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of an embodiment of a drum type shearing machine of the present invention.

FIG. 2 is a cross-sectional view of an embodiment of the drum type shears of the present invention.

FIG. 3 is a vertical cross-sectional view of a drive unit according to an embodiment of the drum shears of the present invention.

FIG. 4 is a plan view of a drive device portion according to an embodiment of the drum type shears of the present invention.

FIG. 5 is an explanatory diagram of a shearing process by the drum shears of the present invention.

FIG. 6 is an operation explanatory view of the drive type table roller of the drum type shearing machine of the present invention.

[Explanation of symbols]

 10 Drum type shearing machine 11,12 Upper and lower drums 11a, 12a Drum shaft 15,16 Eccentric ring 17 Shaft box 18 Housing 19 Lifting cylinder 23,24 Shearing blade 25 Tie bar 30 Drive system (upper and lower drum) 31,32 Gear 33 Drive motor 35, 36 Spindle 37, 38 Gear 40 Drive system (eccentric ring) 41, 42 Gear 44 Pinion gear shaft for eccentric ring drive 45 Pinion gear 46 Servo motor 48 Controller 50 Drive type table roller 51, 52 Roller 53 Roller drive shaft 54 Gears 55 Idle Gears 56, 57 Gears 58 Roller Drive Motor 59 Large Diameter Roller 60 Oscillating Roller L Pass Line W Thin Plate

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[Procedure amendment]

[Submission date] December 13, 1991

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Correction target item name] All drawings

[Correction method] Change

[Correction content]

[Figure 1]

[Fig. 2]

[Figure 3]

[Figure 4]

[Figure 6]

[Figure 5]

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshiro Matsushita No. 1 Shin-Nakahara-cho, Isogo-ku, Yokohama-shi, Kanagawa Ishi Kawashima Harima Heavy Industries Co., Ltd. Yokohama second factory (72) Inventor, Otani Uchi Isogo-ku, Yokohama-shi, Kanagawa Shin Nakahara Town No. 1 Ishi Kawashima Harima Heavy Industry Co., Ltd. Yokohama No. 2 Factory (72) Inventor Sou Ogawa No. 1 Shin Nakahara Town, Isogo Ward, Kanagawa Prefecture, Yokohama Ishi Kawashima Harima Heavy Industry Co., Ltd. Yokohama No. 2 Factory

Claims (5)

[Claims] 1. A pair of upper and lower drums are arranged across a pass line, and a pair of shearing blades are attached in a drum length direction on an outer circumference of the drum, and a drum shaft is provided on an outer periphery of a bearing for supporting the drum. In a drum type traveling shearing machine having a pair of eccentric rings eccentric to each other by an appropriate amount, the pair of eccentric rings are rotatably attached to a shaft box, and the eccentric phase is set to the bottom dead center. At the time of, the gears that rotate the eccentric ring so that the lower drum is at the top dead center are provided for meshing, while the pinion gear shaft that meshes with the gears and rotates the eccentric ring to open and close between the shafts of the upper and lower drums. Gears of the same speed ratio are provided between the shafts of the upper and lower drums and between the driving upper and lower spiders of the drums so that the upper and lower drums can be synchronously rotated even when the gears between the drum shafts are open. Drive source and the eccentric ring drive pin A drive source for each of the union gear shafts is provided,
A drum-type running shearing machine having control means for controlling opening and closing of the drum shaft between a shearing position and a miscut position 2. A drive type table roller for supporting a plate material passing therethrough is provided at least on the lower drum which is disposed above the drum when the drum is stopped, other than the position where the shear blade is attached. 1. The drum-type running shears described in 1. 3. The drum-type traveling shearing machine according to claim 1, wherein the upper and lower drum shafts and the eccentric ring driving pinion shaft are provided in an integral shaft box. 4. The drum-type running distance according to claim 3, wherein the integral shaft boxes arranged at both ends of the drum shaft are connected by a tie bar so as to be detachable from the housing in a cassette manner. Shears. 5. A plurality of drive type table rollers for supporting a plate material passing therethrough are provided on the lower drum, which is disposed above the drum when the drum is stopped, other than the position where the shear blades are attached, and the upper surfaces of the plurality of rollers are provided on the entrance and exit sides. The drum-type running shears according to claim 1, wherein the pair of upper and lower drum shafts can be raised near the same surface as the roller table.