JPS6365406B2 - - Google Patents

Description

[Detailed Description of the Invention] 3-1 Purpose of the Invention 3-1-1 Field of Industrial Application The invention pertaining to this patent application (hereinafter simply referred to as the "Claim Invention") is as shown in Figures 1 and 2. , there is an uncoiler 2 made by rolling metal into a wide thin plate 1 and then winding it into a cylindrical shape, and a constant braking force F from the uncoiler.
In an apparatus with a series of steps, the apparatus includes a slitter 3 that cuts the thin metal sheet 1 drawn out in parallel to the drawing direction given a , especially the final recoiler in a series of steps...a device for winding up metal strips.

3-1-2 Prior Art As a technology related to the present invention, there is a technology described in the patent application publication No. 57-81046.

In this technology, pressurized air is pressurized into the center of the rotating winding shaft 11 and is ejected from the radial introduction hole 1 toward the outer circumference. Moving to the left, the notch 12 of the ring 13 pushes out the expansion/contraction piece 23 radially outward with its inclined surface, and the outer peripheral surface of the expansion/contraction piece 23 pushes the inner peripheral surface of the paper tube loosely fitted therein in advance. When a paper tube is fixed to the expansion/contraction piece 23 and paper is wound around the outer circumferential surface of the paper tube, the pressure of compressed air is increased or decreased according to the diameter of the paper to be wound while rotating the shaft 11, and the expansion/contraction piece 23 23 is expanded and contracted to ring 13
The piston 33 rotates due to friction between both sides of the piston 33.

However, since this technique specifically utilizes a paper tube, the reduced expansion/contraction piece 23 is recessed from the outer peripheral surface of the ring 13 to facilitate insertion of the paper tube, and the enlarged expansion/contraction piece 23 is inserted into the outer peripheral surface of the ring 13. Since it protrudes further and expands and supports the inner surface of the paper tube, in both cases, the outer peripheral surfaces of the expansion/contraction piece 23 and the ring 13 are uneven and are not perfect circles, so it is possible to wind the metal strip without using a paper tube. When removing the paper, it is inappropriate because radial irregularities occur on the outer circumferential surface of the metal strip, reducing the commercial value. and piston 33
However, it is inconvenient because there is no means to automatically link and control the two, and it is not possible to automatically increase or decrease the pressure chamber air depending on the tension of the paper roll. , the frictional force between the ring 13 and the piston 33...and the tension between the paper roll and the paper tube cannot be adjusted, so excessive tension may be applied to the paper roll and cause it to break, or insufficient tension may cause it to loosen or make it impossible to wind the paper. It is clear that defects such as

3-1-3 Problems to be Solved by the Invention The present invention solves the deficiencies of the conventional technology described above, and simultaneously winds a plurality of cut metal strips individually onto a plurality of rotating drums to expand and contract them. The rotating drum has a shape that approximates a perfect circle even when it is scaled up and down, so that the metal strip can be wound without any unevenness, and the rotation speed of the rotating drum is set to be slightly slower than that of the central axis of rotation, and the frictional force between the two is reduced. By automatic adjustment, a plurality of cut metal strips are wound according to length and thickness with a substantially constant tension to achieve uniform winding without cutting or loosening. The purpose is to

3-2 Structure of the invention 3-2-1 Means for solving the problem 3-2-1-1 Background of the invention Wide thin metal plate 1 wound around an uncoiler 2
In the manufacturing process, the raw material in the form of blocks is rolled and annealed several times, so there may be variations in the size, shape, and pressure of the rolling mill rolls, and the temperature in the annealing furnace.
Due to the disparity in time, together with the disparity in material, there are disparities in length, thickness, and internal stress across the entire width and length. As shown in the figure,
Each metal strip 4 from the uncoiler 2 through the slitter 3 to one recoiler 5 is given a certain braking force by the uncoiler 2, but internal stress and length difference are released by cutting. After that, the lengths and bends in particular differ, and the thick and short strips are tensioned between the slitter 3 and the recoiler 5, while the thin and long strips 4 are relaxed, and only the thick and shortest strips 4a. Since all of the above-mentioned braking force = tension is concentrated and expanded, the cross section shrinks and warps, making it impossible to wind up and eventually cutting. Furthermore, the thin and long strip 4b is cut due to the intense rolling. When the stress is released, it stretches more and more than its original length, and because it is thin and the winding diameter is small, the winding length per revolution is less than that of a thicker and shorter part, so the relaxation becomes more and more cumulative. It comes to be done.

In order to solve the above defects, A. A plurality of separate winding drums should be provided for each divided metal strip, and B. Each strip should have the same torque and tension. Each winding drum is provided with an independent rotary drive device such as a torque motor so that each winding drum can be wound with a different number of revolutions depending on the length of each strip at that time. Although this would be ideal, the entire device would be complicated and its control would be complicated, making it impractical.

Therefore, in the present invention, a friction surface is provided between the plurality of divided winding drums and the drive center shaft that rotationally drives them, and each winding drum is rotated by frictional force while sliding with respect to the center shaft. b. Compare the difference in the rotational speed of the central axis and one particular winding drum, and depending on the magnitude of the difference, always set the rotational speed of the winding drum to be slightly slower than that of the central axis. This is solved by configuring each winding drum so that the difference in tension due to the difference in length for each strip wound on it is made constant by sliding with the central axis.

By the way, when the ultra-thin metal plate or foil to be wound has a thickness of about 1 mm to 0.1 mm, the thickness in the width direction is thicker near the center and thinner near the edges, and the difference is about 10%. In terms of length, it is short near the center in the width direction and long near the ends.

Then, if the number of rotations of the plurality of winding drums a and b is set, and a specific winding drum at one end of the center shaft is rotated at that number of revolutions, the number of rotations between each winding drum and the center shaft is determined. The drums near the center have more slippage, and the drums near the edges have less slippage, and the rotational speed of each winding drum is that the drums near the center are slower and the drums near the edges are faster, and the difference is approximately
It will be 10%.

Therefore, if the rotation speed of the central shaft is about 10% faster than the rotation of the winding drum at one end, and the amount of slippage between the two is about 10%, then As mentioned above, the amount of slippage of the winding drum at the same rotation speed is about 20%, which is about 10% more than that of the winding drum. Even thick and short metal strips to be wound up by the winding drum can be wound up smoothly and reliably with the required constant tension, without loosening or tensioning.

However, if, contrary to the above, the ends of the thin metal sheet are thick and short in the width direction and the center part is thin and long, the winding drum at one end rotates 10% slower than the central axis. The winding drum in the center winds up a thick and short metal strip with a slip rate of 10%, but since there is no slippage between the center shaft and the thin long metal strip, static friction causes the center shaft to roll up. Even after the metal strip is wound at the same rotation speed as the center shaft, even after the metal strip is wound up until it no longer loosens, as a result of winding the metal strip at the same rotation speed as the central shaft, excessive tension is generated and breakage occurs.

Therefore, in order to accurately grasp the difference in thickness in the width direction of the metal strip to be wound, and to prevent the above-mentioned defects from occurring even if the positions of the thickness and thinness in the width direction are reversed, It has been found that one of the divided winding drums (referred to as a master drum) is provided with a rotation speed detection device to detect the rotation ratio with respect to the rotation speed of the central shaft and to set the rotation speed to an appropriate value. Normally, the thickness difference in the width direction of a thin metal plate is 10%, and the edges are thinner than the center, so one master drum is placed at one end of the central shaft in the axial direction, and the master drum (other Assuming that the rotational speed of all winding drums (including the winding drum) is 1, by setting the rotational speed of the central shaft to 1.1 to 2.0, all winding drums are rotated by sliding dynamic friction with respect to the central shaft. .

3-2-1-2 Structure of the invention As shown in Fig. 3, a central shaft 6 is arranged horizontally and connected to a motor around a fixed straight line, and rotates in one direction at a constant number of rotations. A fluid hole 7 is provided passing through the axis of the shaft, and a plurality of ejection holes 8 are provided at equal intervals in the axial direction as well, and a plurality of ejection holes 8 are opened in the radial direction from the fluid hole 7 to the outer circumferential surface of the central shaft.

One end of the fluid hole 7 is connected to an air compressor or a fluid pressurization pump (not shown) to supply pressurized fluid into the fluid hole 7, and the other end of the fluid hole 7 is closed.

A plurality of disk-shaped substrates 9 are fixed in close contact with the outer circumferential surface of the central shaft 6 and at regular intervals on the axis thereof, and each substrate 9 has an inner end communicating with a plurality of ejection holes 8 of the central shaft 6. A plurality of communication holes 10 that penetrate in the radial direction and close the outer ends are provided, and a plurality of cylindrical gaps 11 that protrude in the axial direction of the central shaft 6 in the circumferential direction are provided between the communication holes 10. is formed into a disk shape so as to be movable in the axial direction of the central shaft 6, and a plurality of actuating bodies 12 are loosely fitted in the circumferential direction.

Between the left and right adjacent substrates 9, 9, there is a ball bearing 13 which is sandwiched between them and cannot move in the axial direction of the central shaft 6, and which is supported on the outer periphery of a ball bearing 13 interposed between the outer peripheral surface of the central shaft 6 and the outer peripheral surface of the central shaft 6. A plurality of support plates 14 are provided to be rotatable about the axis of the central shaft 6, and the support plates 14 support a plurality of pressing bodies 15 in the circumferential direction in opposing contact with the actuating body 12 of the base plate 9. , a spring 16 is provided between the pressing body 15 and the support plate 14 to always press the pressing body 15 against the actuating body 12 with an elastic force, and a spring 17 is provided to always press the pressing body 15 toward the outer circumference with an elastic force, so that the center of the pressing body 15 is A sloped surface 18 is formed which is sloped lower and straighter on the side farther from the axis 6.

As shown in FIG. 4, on the outer circumferential surface of each pressing body 15, a plurality of annular inclined rings 20 having an inclined inner circumferential surface 19 that matches the inclined surface 18 are closely arranged. The base plate 9 is provided with a protrusion 21 that protrudes from the far side, and is loosely fitted into the radial groove of the support plate 14 so as to be movable in the radial direction.

As shown in FIG. 5, a plurality of annular winding drums 23 having grooves 22 that fit therein are fitted into the outer circumferential surface of each inclined ring 20.
A groove 25 is provided on the outer circumferential surface of each winding drum 23 to accommodate a spring 24 that is wound around each drum so as to be elastically contracted toward the center, and accommodated inwardly from the outer circumferential surface. When the diameter is enlarged or reduced, the distance 26 between them is set so as to form a nearly perfect circular outline.
Furthermore, as shown in FIG. 6, a rotary generator 27 is provided at one end of the central shaft 6, and is connected directly or synchronously to a rotating generator 27, and a specific one of the plurality of winding drums 23...for example, At one end,
A rotating disk 28 is provided which engages a part of the rotating disk and rotates around the central axis 6 at the same rotation speed as the rotating disk 28, and the axis of the pulley 30 rotates by a belt 29 stretched around the circumference of the rotating disk 28. A rotating rotating generator 31 is provided, and between both rotating generators 27 and 31,
The respective outputs of the two are input, compared and calculated, and the rotation speed of the specific winding drum 23 is slowed down and the rotation speed of the central shaft 6 is increased.The ratio is 1:1.1 to 2.0.
A comparison calculation means 32 is provided which outputs an electrical signal so that A fluid pressurizing means 33 is provided for inputting an output and discharging a fluid whose pressure is adjusted in proportion to the magnitude of the input to the fluid hole 7 of the central shaft 6.

3-2-2 Effects of the invention Since the claimed invention has the configuration as described in the preceding paragraph, it produces the following effects.

A wide thin metal sheet 1 that has been rolled and wound around an uncoiler 2 is fed to a slitter 3 with a constant braking force (tension) applied thereto, and is cut into a plurality of metal strips a, b, etc. under the pressure of the slitter 3. , those metal strips a, b, etc. are connected to the corresponding recoiler 5.
The central shaft 6 rotates in one direction.

A rotary generator 2 associated with a central shaft 6 and a rotating disk 28 that rotates synchronously with a particular winding drum 23
7 and 31 are rotated, and the outputs of both rotary generators are input to the comparison calculation means 32 to set the rotational speed ratio of the central shaft 6 and all the winding drums 23 within the range of 1:1.1 to 2.0, and the fluid pressurization means 33, the fluid pressurizing means 33 supplies fluid adjusted to a pressure corresponding to the value of the rotational speed ratio to the fluid hole 7 of the central shaft 6.

The pressure fluid flows from the fluid hole 7 of the central shaft 6 through each jet hole 8 to the communication hole 10 of each substrate 9 and the gap 1
During each period, each actuating body 12 in 11 moves to the right in FIG. It moves the same distance to the left as each operating body 12 against the elastic force of the spring 16.

Each inclined ring 20 radiates while its inclined inner circumferential surface 19 slides depending on the movement distance of each pressing body 15 to the left of the sloped surface 18, and each protrusion 21 also slides on the pressing body 15. The outer peripheral surface of each inclined ring 20 pushes out the inner peripheral surface of the groove 22 of each corresponding winding drum 23 in the radial direction, and each winding drum 23 Each operating body 12 and each pressing body 1 according to the magnitude of pressure
5. Each inclined ring 20 expands and contracts in the radial direction according to the moving distance.

Therefore, the central shaft 6 and each winding drum 23 are caused by dynamic friction while sliding between each actuating body 12 which rotates relatively quickly and each pressing body 15 which rotates slowly, so that the central shaft 6 is connected to each winding drum 23. 23 will be rotated.

The rotational speed of the central shaft 6 varies from 10% to the rotational speed of a specific winding drum 23 (master drum) at one end of the central indicator shaft 6, depending on the thickness difference in the width direction of the thin metal plate 1. Since it is set 100% quickly,
When the ends of the thin metal plate 1 are thin and long and the center part is thick and short, the winding drum 23 corresponding to the ends
The winding drum 23 (master drum) corresponding to the center has less slippage relative to the center shaft 6 and rotates faster, and the winding drum 23 (master drum) corresponding to the center has more slippage relative to the center shaft 6 and rotates faster. Even when the end portions of the thin metal plate 1 are thick and short and the center portion is thin and short, contrary to the above, the central shaft 6 rotates at least 10% faster than the master drum. Therefore, the winding drum 23 (master drum) corresponding to the end part has a lot of slippage relative to the central shaft 6, and even if the rotation speed is slow, the winding drum 23 continues to rotate and wind up.
The winding drum 23 corresponding to the central portion is wound with relatively little slippage relative to the central shaft 6 and a high rotational speed, and in either case, each metal strip 4
a, b... will be smoothly wound up with the same tension.

3-3 Effects of the Invention Since the present invention has the above-mentioned configuration and operates, it has the following effects.

A thin metal plate 1, which is wound around an uncoiler 2 and pulled out by applying a constant braking force, has a thickness difference in the width direction.
The slitter 3 cuts the metal strips into multiple strips to release the internal stress, and the thick and short metal strips 4a tend to be tensioned by the corresponding winding drum 23 due to excessive tension, and are centered relative to other winding drums. There is a lot of friction against the shaft 6 and the rotational speed is slow, but the master drum is 10% or more against the center shaft 6.
Since it rotates 100% slowly, it does not rotate at the same time as the center shaft 6, but instead rotates while sliding between it and creating excessive tension.It continues winding with the required tension, which reduces the cross-sectional area. Without causing cuts, the thin and short metal strip 4b tends to be relaxed by the corresponding winding drum 23, but with less sliding rotational speed relative to the central axis 6 than with other winding drums. becomes faster, absorbs the slack and winds up, and then rotates 10% to 100% slower than that while slipping between the center shaft 6 and continues winding with the required tension without creating excessive tension. Since the cross-sectional area will not be reduced or cut, the large number of metal strips 4a, b, . . . can be wound up smoothly.

[Brief explanation of drawings]

Figures 1 and 2 are respectively a perspective view and a side view of the conventional technology, Figure 3 is a partially omitted cross-sectional view of the present invention, and Figures 4 and 5 a and b are respectively a partial view of Figure 3. The vertical sectional view, the side view, and FIG. 6 are layout diagrams of devices related to FIG. 3.

Claims (1)

[Scope of Claims] 1. A central shaft that rotates at a constant rotation speed in one direction around a fixed straight line, and a plurality of substrates that are individually fixed to the outer periphery of the central shaft and arranged at equal intervals from each other in the direction of the central axis. , close to each board and fixed separately on the outer periphery of the central axis,
A plurality of pressing bodies are immovable in the direction of the central axis, and each pressing body is loosely fitted around the outer periphery of each pressing body, are adjacent to each other at equal intervals in the direction of the central axis, always receive elastic force toward the central axis, and are divided in the radial direction. A plurality of arranged winding drums, a fluid pressurizing means that can adjust and supply fluid pressure in relation to an electric signal, and a fluid pressurizing means that is interposed between the substrate, the pressing body, and the winding drum, an actuating body in which the substrate rotates the pressing body while sliding on it by dynamic friction and expands and contracts the winding drum in response to increases and decreases in the pressure of the fluid passing through the central shaft; Comparing and calculating the output of each rotary generator placed in relation to both generators, calculating the rotation speed of the central shaft to be faster than that of a specific winding drum in a specific range, and generating electricity of different values. A winding device for a metal strip, comprising: a comparison calculation means configured to output a signal to a fluid pressurization means. 2. The metal strip winding device according to claim 2, wherein a particular winding drum is arranged at one end of the central shaft. 3. The metal strip according to claim 2, characterized in that the rotation ratio between the particular winding drum and the central shaft is 1:1.1 to 2.0 based on the calculation value of the comparison calculation means. winding device. 4. Each winding drum is divided into a plurality of parts in the radial direction, and the distance between each division is set so that a nearly perfect circular outline is formed when scaling. A winding device for a metal strip according to claim 2.