JPS6188060A - Continuous correcting device for endless strip - Google Patents

Abstract

PURPOSE:To correct distortion of an endless strip by a roller leveller by disposing a take-up device for applying tension to a drum, and driving a driving device. CONSTITUTION:An endless strip is extended between two drums 2, 3, and when the drum 3 is driven through a motor and a speed reduction gear, the endless strip is moved in direction of an arrow (d). Proper tension is applied to one tension drum 2 through a support arm 4 by a take-up driving source 11. At the start of correcting the endless strip, a press-down roll is lifted up to gradually decrease the press-down amount, until the press-down amount becomes zero. Thus, correction is completed. By this operation, the endless strip is subjected to repeated bending and tensile action to be corrected.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a continuous straightening device for blank and end strips.

(Prior Art and its Problems) Generally, a belt-shaped strip is straightened by passing it through a so-called roller leveler having a plurality of rollers of four or more, but there is a method for straightening an endless belt-shaped thing in which both ends of the strip are joined. Not known.

Therefore, when strips are connected into an endless belt for a certain purpose and used for that purpose, there is no way to correct the distortion that occurs afterwards, and the endless strip has no choice but to be discarded. The cost of having to treat them as consumables has increased, and countermeasures have been desired.

(Problem to be solved by the invention) To provide a conventionally unknown straightening device for an endless belt-like strip, and even if an endless strip used for a certain purpose becomes distorted, it can be straightened and reused. The key is to try to avoid turning them into expendable items.

(Means for solving the problem) It has two or more drums, a take-up device for applying tension to at least one of the drums, and a drive device for any one of the drums. The present invention is characterized in that an endless strip is suspended on the plurality of drums, and the endless strip is driven so that distortion can be corrected by a roller leveler provided on the track of the endless strip. In this case, the rolling amount of the roller leveler is configured to be able to change successively, and one side of the supporting device for the shafts of the plurality of rollers is made to be able to open and close laterally, and the roller leveler is also made to be able to open and close freely to prevent insertion and removal from the endless strip. The feature is that it is easy to use.

(Embodiments of the invention) Figures 1 to 31! In I, l is an endless strip,
It is suspended between the tension drum 2 and the drive drum 3. A drum shaft of the tension drum 2 is supported by a take-up yoke 6. Reference numeral 4 denotes a support arm on one side of the take-up yoke 6, which rotatably supports the shaft 5 of the drum 2 at one end thereof. The support arm 4 is pivotally supported by a pin shaft 7 to the main body of the take-up yoke 6, and is attached so as to be pivotable laterally as shown by the arrow in FIG. Also, a fixed yoke 9 supporting the drum 3
The support arm 8 on one side of the endless strip is rotatably attached to the side as shown by the arrow. When attaching and detaching the drum 2, the support arms 4 and 8 are opened laterally and the endless strip l is attached to the drum 2,
It can be inserted from the side of 4.

The take-up yoke 6 is supported on a sliding liner 10 and can be slid in the take-up direction (arrow C in FIG. 1) by a take-up drive source 1 to apply tension to the endless strip 1.

A fixed support arm 8a on the opposite side of the fixed yoke 9, which is paired with the support arm 8 of the drum 3, is connected to a motor 13 via a speed reducer 12, and moves the endless strip l in the direction of arrow d.

14 is a roller leveler, and three to five straightening rolls are attached to the upper and lower sides of the endless belt 1.

FIG. 3 is a sectional view taken in the direction of the arrow (■) in FIG. 1, showing the details of the roller leveler 14. The endless strip 1 passes over the roller 15 while being pressed and bent by the reduction roll 16. The reduction roll 16 is supported by a backup roll 17 against the reaction force from the endless strip 1. Reduction roll 16
The reduction is performed by driving the jacks 19 and 20 on the reduction frame 18 with the reduction drive source 24.

When attaching and detaching the endless strip 1, remove the pin 22 connecting the rond end of the jack 19 and the roller leveler support frame 21, and use only the jack 2o to lower the frame 1a.
This is done by tilting upwards around the fixing pin 23 and opening it.

FIG. 4 shows another example of a tension applying device for an endless strip 1. Reference numeral 25 denotes a support arm of a tension yoke that supports the drum shaft 5 of the tension drum.

Reference numeral 26 denotes a support arm of a fixed yoke that supports the shaft of the drive drum 3, and is fixed to a support frame 27.

The tension yoke 25 is slidably supported by a sliding liner 28 on a support frame 27, and is moved by a tension driving source 29 to apply tension. According to this structure, since the device is housed within the orbit of the endless strip 1, when attaching and detaching the endless strip 1, the supporting arms of the drums 2 and 3 are opened and closed laterally each time as in the structure shown in FIG. Since this is not necessary, the operation is extremely simple.

FIG. 5 shows an example in which the endless strip 1 is long, and an idler 30 is provided in addition to the tension drum 2 and drive drum 3. Therefore, when the tension drive source 29 is actuated to push the drive drum 2, - the endless strip 1 is stretched between the three drums in a triangular shape;

(Operation of the embodiment) An endless strip 1 is suspended between two drums 2 and 3,
When the drum 3 is driven via the motor 3 and the speed reducer 12, the endless strip 1 moves in the direction of arrow d. Appropriate tension is applied to the strip 1 on one tension drum 2 via a support arm 4 by a take-up drive source 1.

At the beginning of straightening the endless strip 1, the reduction roll 16 is lowered to the maximum level, and after the endless strip 1 passes through the roller leveler 14 several times in this state, the reduction roll 16 is raised and the amount of reduction is gradually reduced until it reaches zero. Decrease the amount of reduction until the straightening is completed.

Through the above operations, the endless strip 1 is repeatedly bent and stretched to be straightened. When a metal plate is repeatedly bent and pulled once, the relationship between the elongation of the center line of the strip cross section and the tension is expressed by the following equation, and the required tension T can be obtained from the equation.

l: Elongation of center line T: Tension b = Width of strip E: Modulus of elasticity -: Stress at yield point d: Bending strain diameter (Jl! light effect) The present invention has the following features: 1) Very small number of roller levelers This makes it possible to straighten endless strips at low cost and with high precision.

2) The tension leveling effect achieved by sequentially changing the tension force applied to the take-up to an appropriate value enables extremely high-precision correction.

[Brief explanation of drawings]

FIG. 1 is a side view of the correction device according to the present invention. Figure 2 is also a plan view. FIG. 3 is a sectional view taken in the direction of the ■ arrow in FIG. FIG. 4 shows another example of a tension applying device. FIG. 5 shows an example of a long endless strip straightening device. In the figure, 1 1 Endless strip 2 Tension drum 3 Drive drum 4 Support arm 5 Drum shaft 6 Take-up yoke 7 Pin shaft 8 Support arm 8a Fixed support arm 9 Fixed yoke 10 Sliding liner 1] Take-up drive source 12 Reducer 13 Motor 14 Roller leveler 15 (roller leveler) roller 16 Press down roll 17 Back up roll 18
Lowering frame 19.20 Jacket 21
Roller leveler support frame 22 Pin 24 Lower drive source 25 (tension yoke) support arm 26 (fixed yoke) support arm 27 Support frame 28 Sliding liner 29
Tension drive source 30 idler and above Applicant Sumitomo Heavy Industries, Ltd. Sub-agent Patent attorney Isamu Ohashi Figure 19 Figure 3

Claims (1)

[Claims] [1] It has two or more drums, at least one of these drums is provided with a take-up device, and any one of the plurality of drums is provided with a drive device. A continuous straightening device for an endless strip, characterized in that the endless strip is suspended on the plurality of drums, and a roller leveler is provided on the track of the endless strip. [2] Claim [1] characterized in that the roller leveler is configured so that the rolling reduction amount of the roller can be successively changed.
] A continuous straightening device for endless strips. [3] Claim [1] characterized in that one side of the support device for the shafts of the plurality of rollers can be opened and closed laterally.
] A continuous straightening device for endless strips. [4] The continuous straightening device for endless strips according to claims [1] and [3], wherein the roller leveler is openable and closable to facilitate insertion and removal of the endless strip.