JP2007245250A - Traveling shearing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a traveling shearing machine admitting stable and precise control compared with the clutch brake system as conventional, capable of eliminating a brake for deceleration and stop, involving less temperature running and wear of a clutch, assuring a wire applicable speed range compared with the start-stop system as conventional, and not requiring a large-sized motor. <P>SOLUTION: The traveling shearing machine is equipped with a pair of gears in meshing, a pair of shear blades mounted on the rotary shafts of the gears through supports, and a drive system for the gears, and is structured so that the gears in meshing are rotated by the drive system, whereby the shear blades are rotated, so as to shear a work to be sheared under running, wherein the arrangement further includes a first drive system 31 in which motors for starting and braking are connected normally with a pinion, and a second drive system 41 through which the rotation of a flywheel due to driving of motor is connected with a pinion at any time required, whereby the pinion of the first drive system and the pinion of the second drive system are meshed with the gears. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a running shear. For example, in the rolling process of a metal material, the front end portion and the rear end portion of a material to be rolled running at a considerable speed are sheared and removed, but the present invention runs a material to be sheared such as the material to be rolled. It relates to a machine that shears in.

  The shearing blade of the shearing machine that shears the material to be sheared starts from a standby angle that does not contact the material to be sheared, and performs acceleration, shearing, deceleration, and stop operations. Must stop at a stop angle that does not contact the material. Naturally, acceleration to shear and shear to stop need to be within one revolution. That is, it is necessary to complete acceleration within an angle within one rotation, and similarly complete deceleration within an angle within one rotation.

2. Description of the Related Art Conventionally, two methods are known as methods for driving a running shearing machine in which a shearing blade accelerates, shears, decelerates, and stops as described above. One of them is that the flywheel, which has been accelerated to the vicinity of the shearing speed by a motor in advance, and the gear to which the shearing blade is attached are connected by a clutch to accelerate and shear the shearing blade. This is a so-called clutch brake system in which the vehicle is decelerated and stopped (see, for example, Patent Document 1). The other one is a so-called start / stop system in which the whole including the flywheel is accelerated, sheared, decelerated, and stopped by a motor (see, for example, Patent Documents 2 and 3). The clutch brake system has an advantage that a relatively small motor can be used because rotational energy stored in advance in the flywheel can be used for shearing and rapid acceleration / deceleration operation of the motor is unnecessary. However, this system has a problem that since the acceleration and deceleration are performed by a clutch or brake, precise shearing control is difficult, and wear of the clutch and brake is unavoidable, so that maintenance of these facilities is troublesome. On the other hand, since the start / stop system uses a motor to accelerate and decelerate, there is an advantage that precise control is possible compared to the clutch brake system and there is no problem of wear of the clutch and brake. However, this method needs to accelerate and decelerate the whole including the flywheel, so a relatively large motor is required, and it can be applied due to the speed reduction during shearing and the limitation of the angle of acceleration and deceleration. There is a problem that the speed range is relatively narrow. Such a problem can be solved by making the moment of inertia variable. However, if this is done, the mechanism becomes extremely complicated.
JP-A-5-16016 JP 51-34491 A Japanese Utility Model Publication No.59-12526

  The problem to be solved by the present invention is that, compared with the clutch brake system, stable and highly accurate control is possible, no brake for deceleration stop is required, clutch heat generation and wear are extremely small, and start-stop Compared with the system, the present invention is to provide a running shear machine that has a wider application speed range and does not require a large motor.

  The present invention for solving the above problems comprises a pair of meshing gears, a pair of shearing blades attached to the rotating shafts of the pair of gears via a support, and a drive system for the pair of gears. In a running shearing machine that rotates a pair of gears in mesh with each other by a drive system and thereby rotates a pair of shearing blades to shear a material to be sheared during running. A first drive system in which the motor is always connected to the pinion; and a second drive system in which the rotation of the flywheel driven by the motor is temporarily connected to the pinion via the clutch, and the pinion of the first drive system And a pinion of the second drive system are engaged with a pair of gears.

  Similarly to the conventional shearing machine, the running shearing machine according to the present invention is a pair of gears in meshing relation and a pair of rotating gears attached to the pair of gears via a support such as a drum or a crank. And a pair of gear drive systems, and a pair of gears engaged with each other are rotated by this drive system, thereby rotating the pair of shear blades to shear the material to be sheared during traveling. It is supposed to be.

  The running shear according to the present invention includes a first drive system and a second drive system as a drive system for a pair of gears in meshing relation. The first drive system includes a motor and a pinion that is always connected to the motor, and the pinion is meshed with one of the pair of gears. The second drive system includes a motor, a flywheel connected to the motor, and a pinion that is temporarily connected to the flywheel via a clutch, and the pinion is attached to one of the pair of gears. Meshed. The motor and the pinion of the first drive system can be connected to the motor and the flywheel of the second drive system via a speed reducer as necessary.

  The first drive system mainly functions to activate and brake a pair of shearing blades together with a pair of gears in meshing relation. As described above, a pair of shearing blades attached to the rotating shafts of a pair of gears in meshing relationship via a support such as a drum or a crank can wait, accelerate, shear, decelerate while they make one revolution. The stop (standby) operation must be performed, but the first drive system is mainly responsible for other operations except for shearing. On the other hand, the second drive system mainly functions to give energy necessary for shearing to the pair of shearing blades via the pair of gears, and therefore mainly performs shearing in the above-described operation. When the flywheel is rotated by a motor, rotational energy is generated there. This rotational energy is transmitted to the pinion via the clutch, and further transmitted to the pair of shearing blades via the pair of gears. Shears the material without difficulty.

  When shearing a material to be sheared using the running shear according to the present invention, the motor of the second drive system is activated in advance and the flywheel is rotated at a speed synchronized with the traveling speed of the material to be sheared. Let me. First, the motor of the first drive system is operated in accordance with the timing that requires shearing, the pinion is activated, and simultaneously the pair of gears and the pair of shearing blades are activated. Synchronize. Next, when the speed of the pair of shearing blades and the speed of the flywheel are synchronized, the clutch of the second drive system is connected, and the pair of shearing blades are synchronized with the traveling speed of the material being sheared. The material to be sheared is sheared by cutting from above and below, usually at a speed. Thus, after shearing, the clutch of the second drive system is disengaged and the motor of the first drive system is stopped. Thereby, the pinion is braked, and at the same time, the pair of shearing blades are braked together with the pair of gears, and stopped within the range of one rotation from the original standby position or shear start angle.

  In the inter-running shearing machine according to the present invention, two or more second drive systems can be provided. Two or more second drive systems composed of a motor as described above, usually a speed reducer, and further a flywheel, a clutch and a pinion are juxtaposed, and each pinion of the second drive system is connected to a pair of gears. Then, two or more rotational energies can be generated by changing the size, weight, etc. of the flywheel between the second drive systems, so that it becomes easy to adapt to the shearing conditions required by the material to be sheared.

  In the running shear according to the present invention, the pinion of the first drive system and the pinion of the second drive system can be meshed with any one of the pair of gears, but the overall structure is simplified. In order to make it easier to use, it is preferable that one of the pair of gears is engaged with the first drive system pinion and the other gear is engaged with the second drive system pinion.

  According to the interstitial shearing machine according to the present invention described above, there are the following effects compared to the clutch brake system. In other words, since the shearing blade is started and stopped by the motor, it is not affected by the wear of the clutch and brake or the variation in operation. Therefore, stable and highly accurate control can be performed as compared with the clutch brake system, and a brake for decelerating and stopping is unnecessary. Moreover, since the clutch is connected with the shear blade and the flywheel at the same speed, the wear is extremely low. In addition, there are the following effects compared to the start-stop type shearing machine. That is, since the shearing blade is accelerated and decelerated from the flywheel, the shearing speed range can be expanded to the high speed side without increasing the size of the motor. In addition, since a large flywheel can be selected without being restricted by acceleration and deceleration during shearing, it is possible to reduce the speed reduction during shearing, thereby expanding the shear rate range to the low speed side.

  FIG. 1 is a side view schematically showing a running shear according to the present invention, FIG. 2 is a sectional view taken along line AA of FIG. 1, and FIG. 2 also shows an operating state. The base ends of the rotating shafts 12 and 22 of the pair of gears 11 and 21 are cantilevered in a machine frame (not shown), and the upper gear 11 and the lower gear 21 are engaged with each other. A shearing blade 14 is attached to the tip of the rotating shaft 12 of the upper gear 11 via a support 13. Similarly, the tip of the rotating shaft 22 of the lower gear 21 is sheared via a support 23. A blade 24 is attached. The shearing blade 14 and the shearing blade 24 are in a positional relationship such that both the cutting edges come into contact with each other as shown in FIG. 2 by the rotation of the pair of gears 11 and 21 in meshing relation.

  A first drive system 31 is connected to the upper gear 11, and a second drive system 41 is connected to the lower gear 21. The first drive system 31 includes a motor 32 and a pinion 34 attached to the rotation shaft of the motor 32, and the pinion 34 meshes with the upper gear 11. The second drive system 41 includes a motor 42, a flywheel 44 attached to the rotation shaft of the motor 42, a pinion 46 that meshes with the lower gear 21, and a rotation shaft and pinion 46 to which the flywheel 44 is attached. A clutch 45 for attaching / detaching the attached rotary shaft is provided.

  When the traveling shearing material S shown in FIGS. 1 and 2 according to the present invention is sheared, the motor 42 of the second drive system 41 is operated in advance, and the flywheel 44 is It is rotated at a speed synchronized with the traveling speed of the shear material S. First, the motor 32 of the first drive system 31 is operated in accordance with the timing at which shearing is required, the pinion 34 is activated, and at the same time, the pair of shearing blades 14 and 24 are activated together with the pair of gears 11 and 21. And the speed is synchronized with the speed of the flywheel 44. Next, when the speed of the pair of shear blades 14 and 24 and the speed of the flywheel 44 are synchronized, the clutch 45 of the second drive system 41 is connected, and the material to be sheared running the pair of shear blades 14 and 24. The material to be sheared S is sheared by cutting from above and below at a speed synchronized with the traveling speed of S (state of FIG. 2). Thus, after shearing, the clutch 45 of the second drive system 41 is disconnected, and the motor 32 of the first drive system 31 is stopped. As a result, the pinion 34 is braked, and simultaneously the pair of gears 11 and 21 and the pair of shearing blades 14 and 24 are braked up and down, and stopped within one rotation from the original standby position or shear start angle. The following is repeated for each shear. When the stop position is different from the standby position, the first drive system 31 moves the standby position to the standby position until the next shearing.

  FIG. 3 is a side view schematically showing another running shear according to the present invention. 3 that are the same as those in FIGS. 1 and 2 are indicated by adding a to the same reference numerals as in FIGS. 1 and 2, and therefore, for example, 11a in FIG. 3 is an upper portion corresponding to 11 in FIG. For example, reference numeral 21a denotes a lower gear corresponding to 21 in FIG. 3 is different from the running shear shown in FIGS. 1 and 2 in that it includes two second drive systems connected to the lower gear 21a.

  In the running shear according to the present invention shown schematically in FIG. 3, the first drive system 31a is connected to the upper gear 11a, but the lower gear 21a has another drive system 41a in addition to the second drive system 41a. A second drive system 41b is connected. For convenience of explanation, the symbol b is added, but the second drive system 41b includes a motor 42b, a flywheel 44b attached to the rotating shaft of the motor 42b, a pinion 46b meshing with the lower gear 21a, and a flywheel 44b. And a clutch 45b for attaching and detaching the rotary shaft to which the pinion 46b is attached. In the running shear according to the present invention of FIG. 3, the flywheel 44a in one second drive system 41a and the flywheel 44b in the other second drive system 41b are different in size and weight. Since rotational energy can be generated, it is easy to adapt to the shearing conditions required by the material to be sheared.

1 is a side view schematically showing a running shear according to the present invention. AA sectional view taken on the line AA of FIG. The side view which shows schematically the other running shear machine which concerns on this invention.

Explanation of symbols

11, 11a, 21, 21a Gears 12, 12a, 22, 22a Rotating shafts 13, 13a, 23, 23a Supports 14, 14a, 24, 24a Shear blades 31, 31a First drive systems 32, 32a, 42, 42a, 42b Motor 34, 34a, 46, 46a, 46b Pinion 41, 41a, 41b Second drive system 44, 44a, 44b Flywheel 45, 45a, 45b Clutch

Claims (3)

  A pair of gears in meshing relation, a pair of shearing blades attached to the rotating shafts of the pair of gears via a support, and a drive system of the pair of gears, and a pair in meshing relation with the drive system In a running shear machine that rotates a pair of shearing blades and thereby shears a material to be sheared by running a pair of shearing blades, a first motor for starting and braking is always connected to the pinion. A drive system and a second drive system in which the rotation of the flywheel driven by the motor is temporarily connected to the pinion via a clutch, and the first drive system pinion and the second drive system pinion are paired The inter-running shearing machine is characterized by being meshed with a gear.   The running shear machine according to claim 1, wherein two or more second drive systems are provided, and each pinion of the second drive system is meshed with a pair of gears. The running shear machine according to claim 1 or 2, wherein a pinion of the first drive system is meshed with one gear of the pair of gears, and a pinion of the second drive system is meshed with the other gear.

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