JPH10157895A - Vertical band material accumulating device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify a structure of a vertical band material accumulating device, in which a band material is meanderingly guided between multiple pulleys arranged in roller bridges connected together via a pulley by means of a cord and the accumulating quantity of the band material is changed by changing an interval between the roller bridges, for regulating the flow of the band material when the travel of the band material is intermitted in a continuous band material device. SOLUTION: One pulley system 12 serving as a travel driving device is allocated to each of both roller bridges 3, 7, and above the roller bridge 3 in the upper part, a fixed roller 13 in one pulley system 12 is installed to a carrier frame 1, while below the roller bridge 7 in the lower part, a roller 13 in the other pulley system 12 is installed in the carrier frame 1. Movable pulleys 14 belonging to the roller bridges 3, 7 are fixed to the roller bridge 3, 7 on which they travel individually, and each rope 15 in both pulleys 12 is guided to a single drivable rope drum 16 respectively.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention comprises a carrier frame having horizontal upper and lower roller bridges which can run synchronously vertically toward and away from each other, one of said roller bridges having its own weight. Compensates for the weight of the other roller bridge as a counterweight, one roller bridge is articulated at the top and the other roller bridge is articulated at the bottom to a common rope transmission, wherein the rope transmission is Turned vertically,
Another roller for deflecting the rope transmission is supported in the upper and lower regions of the carrier frame to regulate the flow of the strip when strip running is interrupted in the continuous strip device. The invention also relates to a vertical strip accumulator in which the strip is guided in a meandering manner by a direction-changing roller provided on a roller bridge in the carrier frame.

[0002]

BACKGROUND OF THE INVENTION Vertical strip accumulators, also known as loop towers or loopers, maintain a continuous process speed during coil handling, i.e., when changing coils and / or welding the coil start to the strip end. Used in stripping equipment for Long strip lengths are temporarily accumulated in the vertical strip accumulator by increasing the meandering path in which the strips are alternately guided around the upper and lower directional change rollers. Is done.

[0003] This is because, for example, when the lower roller bridge is stationary, the upper roller bridge is moved upwards in the carrier frame, thereby increasing the strip length accumulated between the roller bridges. Is achieved.

[0004] In order to move the roller bridge of several tons of mains upward, a counterweight is provided on the outside of the carrier frame and the counterweight is connected by a rope or a chain to the movable roller bridge via a deflecting roller. It is known to compensate for the weight of the roller bridge.

The disadvantage of this known construction lies in the very high production and material costs for the balancing of the runnable roller bridges, and the strips after strip breaks, which often occur in such devices, are inevitable. Due to the large time and personnel costs required to insert the strip, improved vertical strip accumulators have been proposed. In the accumulator, the two roller bridges are movably guided towards and away from each other in a synchronous manner in the carrier frame, with the weight of one roller bridge acting as a counterweight and the weight of the other roller bridge. (European Patent EP 0
761585A2).

[0006] Unlike the previous solutions, the upper roller bridge and the lower roller bridge no longer move in the carrier frame, but the two roller bridges are guided so that they can run synchronously. The guidance is provided in such a way that the weights of the roller bridges compensate for each other. This saves a great deal of cost in the known solution for the required counterweight. This leads to savings in the manufacture of the entire device, even considering the cost of the second movable roller bridge. Moreover, another advantage obtained with the proposed solution is that the roller bridges are moved away from and toward each other at half the speed with respect to known solutions. One roller bridge is articulated at the top and the other roller bridge is at the bottom to a vertically diverted rope or chain drive driven at the same speed.

[0007]

SUMMARY OF THE INVENTION The object of the invention is to provide a strip accumulator according to the opening paragraph in which the rope disc diameter and the rope diameter can be reduced by reducing the drive torque, and that the drive device The structure allows a simplification of the structure of the strip accumulator and its carrying frame, so that further cost savings in the manufacture of this device are achieved.
An object of the present invention is to simplify the roller bridge driving device.

[0008]

SUMMARY OF THE INVENTION According to the present invention, there is provided a driving apparatus for driving both roller bridges.
Two pulley systems are assigned, the fixed rollers of one pulley system are mounted on the carrier frame below the upper roller bridge and the rollers of the other pulley are mounted on the carrier frame below the lower roller bridge, and the moving pulley belonging to the roller bridge is The problem is solved in that the ropes of the two pulleys are fixed to the respective running roller bridge and are guided on a respective drivable rope drum in the center of the carrier frame.

The drive of the roller bridge by means of a 12/2 pulley advantageously reduces the drive torque significantly, thus making it possible to significantly reduce the cost of the entire system consisting of the motor, the transmission and the pulley.

In one advantageous embodiment, both rope drums can be driven by one common motor. This further simplifies the drive and makes it less expensive. The use of pulleys requires only a relatively weakly configured drive motor.

The drive of the rope drum is preferably effected via a differential transmission. The incorporation of a differential gearing allows a completely identical load distribution to the plurality of pulleys, thus eliminating the need for a rope strainer.

In another embodiment of the invention, the rope drums and their drives are mounted on the console beside the carrier frame, the carrier frame being formed as a lattice mast structure in a modular assembly. Forming the carrier frame as a modular lattice mast structure allows the use of standard components. Modular construction reduces assembly time by about half.

A further advantage of mounting the rope drum and drive to the console of the carrier frame is that it is not necessary to introduce strip pulling forces and torques into the foundation. The force reception takes place internally via the carrier frame. Most importantly, the weight is significantly reduced by using a carrier frame with a lattice mast structure.

One embodiment of the present invention is shown in the drawings and will now be described.

FIG. 1 is a side view of a vertical strip accumulator according to the present invention;
FIG. 2 is a schematic view showing the band material accumulator according to the present invention viewed in the band material traveling direction.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 schematically shows a carrier frame, indicated by one of the vertical strip accumulators.

The upper roller bridge is guided vertically downwards into the carrier frame 1 in a manner to be described later. The strip indicated by 6 is guided via a deflecting roller 5 mounted on the roller bridge at 4 and projecting downward. The second roller bridge 7 is vertically movable in the lower part of the carrier frame 1 in synchronization with the upper roller bridge 3 and is likewise mounted at four points and oriented upwards. A direction changing roller 8 for guiding the roller 6 is provided.

The strip 6 is alternately changed in direction by the upper direction changing roller 5 and the lower direction changing roller 8 in the carrier frame 1 and guided so as to meander.

Due to the proper coupling of the upper and lower roller bridges 3 and 4, the weight of the lower roller bridge and that of the upper roller bridge are substantially canceled out by these two roller bridges and additional balancing is achieved. Balanced without the need for weight.

For this purpose, a rope or chain 10 is used.
And the ends of the rope or chain 10 are attached to each roll bridge at nine locations. The rope or chain 10 is guided via a deflecting roller 11, which is supported on the upper part in a carrier frame, so that the roller bridges 2 and 7 are in equilibrium at an appropriate weight.

When one of the roller bridges is raised or lowered, the movement of the roller bridges 3 and 7 is synchronized but in the opposite direction, respectively, by means of a rope or chain transmission 10 which is guided via a deflecting roller 11. It is guaranteed to be done. At the same time, no additional counterweight is required to achieve weight balance at the same time.

The roller bridge is driven by a pulley system 12 (FIG. 1).
2, the fixed rollers 13 of the pulley system 12 are supported on the carrier frame 1 above the upper roller bridge 3 and below the lower roller bridge 7, respectively, as can be clearly seen from FIG. 12 belonging pulleys 1
4 is fixed to each running roller bridge 3,7.

The ropes 15 of the two pulley systems 12 are guided by one rope drum 16, and the rope drum 16 is attached to the console 18 together with the driving device of the rope drum 16 on the side of the carrying frame 1. Both rope drums 16 can be driven by a common electric motor 17, and the drive of the rope drum 16 is performed via a differential transmission 19.

As can be seen from FIG. 1, the carrier frame 1 is constructed as a lattice mast structure in a modular manner.
Standardized parts 20a, 20b, 20c of the same structure length
Formed from

[Brief description of the drawings]

FIG. 1 is a side view of a vertical band storage according to the present invention.

FIG. 2 is a schematic view showing the band material accumulator according to the present invention when viewed in the band running direction.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Supporting frame 3 Roller bridge 4 Attachment point of direction conversion roller 5 6 Strip 7 Second roller bridge 8 Direction conversion roller 9 Attachment point of rope or chain 10 10 Rope or chain 11 Direction conversion roller 12 Pulley system 13 Fixed roller 14 Moving pulley 15 Rope 16 Rope drum 17 Electric motor 18 Console 19 Differential transmission device 20a, b, c Parts of carrying frame

Claims (4)

[Claims] 1. A carrier frame having horizontal upper and lower roller bridges that can run synchronously vertically toward and away from each other, the weight of one of said roller bridges being the counterweight as the other. Compensating for the weight of the roller bridge, one of the roller bridges is articulated on the upper side and the other one on the lower side to a common rope transmission, which is now turned upright, Another roller for deflecting the rope transmission is supported in the upper and lower regions of the carrier frame to regulate the flow of the strip when strip running is interrupted in the continuous strip device. In the vertical strip accumulator, the strip is guided in a meandering manner by a direction changing roller provided on a roller bridge in the carrier frame. One pulley system (12) is assigned to each of the roller bridges (3, 7) as a traveling drive device, and the fixed roller (13) of one of the pulley systems (12) is connected to the upper roller bridge (3). ) Above the other pulley system (1)
2) the roller (13) is attached to the carrier frame (1) below the lower roller bridge (7);
The moving pulley (1) belonging to the roller bridge (3, 7)
4) are the respective running roller bridges (3, 3).
7), and the ropes (1) of both pulley systems (12) are fixed.
5) each one drivable rope drum (16)
A vertical strip accumulator, characterized in that it is guided in a vertical strip. 2. The vertical strip accumulator according to claim 1, wherein both rope drums (16) can be driven by one common motor (17). 3. The storage device according to claim 2, wherein the drive of the rope drum is effected via a differential transmission. 4. A rope drum (16) and a driving device (1).
7 and 19) are attached to the console on the side of the carrier frame (1), the carrier frame (1) being formed as a lattice mast structure in a module assembly (20a, 20b, 20c). Claim 1 to Claim 3
A vertical strip accumulator according to any one of the preceding claims.