JPS59227644A - Method of winding sheet band - Google Patents

Abstract

PURPOSE:To securely move a sheet band in between rollers, by temporarily stopping a dancing roller for applying tension, at the same time as the cutoff of the sheet band being wound on a roller, to prevent the band from stopping or moving in reverse. CONSTITUTION:When the piston rod of an air cylinder 38 on a winding arm 5 is protruded, a cutter 20 cuts off a sheet band 4 between a guide bar 17 and a roller 2. At the same time, a timer is put into operation by a signal from a limit switch to drive a solenoid valve to brake a disk. As a result, the swing of a dancing arm 62 is stopped so that a dancing roller 68 ceases moving. For this reason, the sheet band 4 is prevented from moving in reverse or stopping on the peripheral surface of the roller 2, so that the sheet band is securely moved in between a pressure roller 22 and the roller 2.

Description

[Detailed Description of the Invention] This invention winds up a sheet strip such as a plastic film, coating sheet, paper, etc. Specifically, it is transferred from a fully wound roll core to an empty roll core after winding has been completed, and then wound onto the empty roll core. This invention relates to a method for winding up a sheet strip.

Conventionally, when winding a sheet strip onto an empty roll core, it was done as follows. In Figures 1 and 2,
Reference numeral 1 denotes a support arm supported on a pedestal (not shown).A mirror-finished empty roll core 2 is rotatably supported on this support arm 1 via a shaft 3.
is rotated by a motor (not shown) at the same circumferential speed as the traveling speed of the sheet strip, which will be described later. Further, the roll core 2 is rotated simultaneously with or immediately after the rotation of the support arm. Near the roll core 2, a medium-wide sheet strip 4 is run by winding up a full roll core (not shown) located downstream of the roll core 2.

Reference numeral 5 denotes a substantially arc-shaped winding arm located below the roll core 2, and the base end of the winding arm 5 is rotatably supported via a pin 6 on a pedestal (not shown). A guide roll 7 is rotatably supported at the tip of the winding arm 5 via a shaft 8, and when the winding arm 5 rotates to approach the roll core 2, the guide roll 7 moves toward the roll core 2. The sheet belt 4 is brought into contact with and wrapped around the sheet belt 4 on the downstream side of the roll core 2 , and the sheet belt 4 can be wound around the roll core 2 . A bracket 10 is fixed to the winding arm 5 approximately toward the tip from the center thereof by a bolt 11, and this bracket 10 has a guide bar extending toward the sheet strip 4 between the guide roll 7 and the roll core 2. 17 is fixed. By rotating the winding arm 5 toward the roll core 2, the guide bar 17 moves the sheet strip 4 between the guide roll 7 and the roll core 2 into the space formed by the pressure roll 22 and the roll core 2. guide you towards.

Reference numeral 18 denotes an air cylinder fixed to the bracket 10, and a blade support member 19 is fixed to the tip of the piston rod of this air cylinder 18. A knife 20 is fixed to the knife support member 19, and this knife 20 can cut the sheet strip 4 between the guide bar 17 and the roll core 2 by protruding the piston rod of the air cylinder 18. . 2I is a nip arm located above the roll core 2, and the base end of this nip arm 21 is rotatably supported by the pedestal via a pin 21a. A pressure roll 22 is installed at the tip of the nip arm 21.
is rotatably supported via an axis Z3. Nip-
When the arm 21 rotates to approach the roll core 2,
The pressure roll 22 can wrap the sheet strip 4 on the upstream side of the roll core 2 around the roll core 2. A dancer arm (not shown) is rotatably supported on the pedestal above the pressure roll 22, and a dancer roll (not shown) is rotatably supported at the tip of the dancer arm. The dancer roll is wound with the sheet strip 4 upstream of the pressure roll 22, and a constant tension is applied to the sheet strip 4 by the rotation of the dancer arm. In order to wind up the sheet strip 4 onto the empty roll core 2, first, the winding arm 5 is moved onto the roll core 2.
The sheet strip 4 on the downstream side of the roll core 2 is wound around the roll core 2 via the guide roll 7 and the guide bar 17. Next, the nip arm 21 is rotated so as to approach the roll core 2, and the sheet strip 4 on the upstream side of the roll core 2 is wound around the roll core 2. Next, when the air cylinder is operated for 1 day, the blade 20 moves between the roll core 2 and the pressure roll 22, as shown in FIG.
The sheet strip 4 between the guide bar 17 and the roll core 2 is cut by protruding toward the space formed between the guide bar 17 and the roll core 2.

As the roll core 2 rotates clockwise, the end of the cut sheet strip 4 is attached to the pressure roll 22.
The sheet is caught between the sheet strip 4 and the roll core 2. After this, the sheet strip 4 is wound around the roll core 2 as the roll core 2 rotates.

However, such conventional methods for winding up sheet strips have the following problems. first,
As shown in FIG. 1, in a state in which the winding arm 5 and the nip arm 21 are rotated so as to approach the roll core 2, the dancer roll is rotated to a certain tensile strength on the sheet strip 4 by the rotation of the dancer arm. is giving.

Next, as shown in FIG. 2, the guide bar 17 and the roll core 2 are
The sheet strip 4 between the two is cut by the blade 20, and even during this cutting, the dancer arm rotates and the dancer roll applies a constant tension to the sheet strip 4.

Moreover, this tension is generally large when the thickness of the sheet strip 4 is thick. Therefore, after cutting the sheet strip 4, the sheet strip 4 wound around the roll core 2
When the dancer roll pulls the sheet strip 4, the dancer roll does not travel in the direction in which the roll core 2 rotates but stagnates on the outer peripheral surface of the roll core 2, or the roll core 20 rotates in the opposite direction. I end up running.

For this reason, the sheet strip 4 cut by the cutter 20
There was a problem in that the ends of the sheet strip 4 could not be caught between the roll core 2 and the sheet strip 4 wound around the pressure roll 22, and as a result, the sheet strip 4 could not be wound up.

This invention was made by focusing on the above-mentioned problems.
A roll core rotatably supported by a support arm, a sheet strip running near the roll core, a rotatable guide roll wrapped around a one-meter sheet strip downstream from the roll core, and the guide roll. and a winding arm having a blade for cutting the sheet strip between the roll core and the roll core, and wrapping the sheet strip on the downstream side of the roll core around the roll core via the guide roll; a crimping roll that can rotate while being wrapped around the sheet strip upstream of the core; and a dancer roll that is provided upstream of the crimping roll and imparts tension to the sheet strip; and a method for winding up a sheet strip, in which the sheet strip is cut by protruding toward a space formed between the pressure rolls, and the sheet strip is wound around the roll core. At the same time, the present invention aims to solve the above problem by temporarily stopping the movement of the dancer roll.

Hereinafter, one embodiment of the present invention will be described based on the drawings.

First, the configuration will be explained, and the same parts as those in the prior art will be given the same reference numerals and the explanation will be omitted.

In Fig. 3.4.5.6, 31 is a pedestal, and a bearing unit wing is fixed to the upper surface of this pedestal 31.

The bearing unit 32 has a shaft 3 at the center of the support arm 1.
It is rotatably supported via 3. At one end of the support arm 1, the empty roll core 2 whose outer peripheral surface has been satin-finished is rotatably supported, and at the other end, the fully rolled roll core 2 on which the sheet strip 4 has been wound is rotated. Possibly supported. A guide arm 34 is formed in the center of the support arm 1 and projects upwardly and downwardly, and a guide roll 3 is connected to the tip of each guide arm 34 via a shaft 35.
6 is rotatably supported. The sheet strip 4 wound around one roll core 2 is wound around the lower guide roll I, and then continues to the end of the sheet strip 4 wound around the other full roll core 2. has been done. One empty roll core 2 can be rotated clockwise by an M motor (as shown) at a circumferential speed identical to the running speed of the sheet strip 4.The other full roll The core 2 is continuously rotated clockwise by a motor (not shown). It gives added tension.

1 is a pedestal placed near one side of the pedestal 31, and the base end of the winding arm 5 is rotatably supported on this pedestal n. A first air cylinder 38 is fixed to the bracket 10 fixed to the winding arm 5, and the cutter support member 19 is fixed to the tip of the piston rod of the first air cylinder 38. A protrusion 39 is formed at the base end of the winding arm 5, and the head side of a second air cylinder 40 is rotatably supported in a frame below the protrusion 39 via a bottle 41. . The tip 0 end of the piston rod of the second air cylinder 40 is rotatably connected to the tip of the projection 39 via a pin 42 . When the piston rod of the second air cylinder 40 is retracted, the winding arm 5 rotates clockwise around the pin 6, and the guide roll 7 rolls the sheet strip 4 between the roll core 2 and the guide roll back into the roll core. Wrap it around 2.

A base end portion of the nip arm 21 is rotatably supported on a gantry wing above the winding arm 5. The pressure roll 22 is rotatably supported at the tip of the nip arm 21, and the sheet strip 4 wrapped around the pressure roll 22 is continuous with the sheet strip 4 wrapped around the empty roll core 2. are doing. That is, the sheet strip 4 is running near the roll core 2. A protrusion 44 is formed at the base end of the nip arm 21, and the head side of a third air cylinder 45 is rotatably supported on the pedestal 5 below the protrusion 44 via a pin 46. There is. The tip of the piston rod of the third air cylinder 45 and the tip of the protrusion 44 are rotatably connected via a pin 47). Projection 4
A fourth air cylinder 49 is fixed to the frame 37 above the fourth air cylinder 4, and one piston rod of the fourth air cylinder 49 projects downward. When the piston rod of the third air cylinder 45 protrudes, the nip-arm 2
1 rotates counterclockwise about the pin 21a, and the protrusion 44 can come into contact with the tip of the piston rod of the fourth air cylinder 49. As shown in detail in FIG.
A shaft 52 is rotatably supported on the front vertical wall 51, and this shaft 52 has a flange 53 formed on the shaft 52 in front of the vertical wall 51 and a retaining ring fixed to the shaft 52 behind the vertical wall 51. The movement in the axial direction is restricted by 54. A disk 55 is attached to the set screw 5 on the shaft 52 behind the retaining ring 54.
It is fixed by 6. 58 is a disc brake that brakes the rotation of the disc 55, and this disc brake 58 includes a pad 59 that is brought into pressure contact with the disc 55 by introducing compressed air, and a pad holder 60 that is attached to a mount r and stores the pad 59. and has. A center portion of a dancer arm 62 is fixed to the shaft 52 in front of the flange 53 by a set screw 63. Referring again to FIG. 3, the head side of the fifth air cylinder 65 is rotatably supported on the frame 37 above one end of the dancer arm 62 via a pin 66, and the tip of the piston rod of the fifth air cylinder 65 is connected to the dancer arm. It is rotatably connected to one end of 62 via a pin 67. A dancer roll 68 is rotatably supported at the other end of the dancer arm 62 via a dancer shaft 69, and a mount r above the dancer roll 68 has guide rolls 70 and 71 on one side and the other side, respectively.
are rotatably supported via shafts 72 and 73. The sheet strip 4 wound around the guide roll 70, dancer roll 68, and guide roll 71 is the pressure roll 2.
It is continuous with the sheet strip 4 wrapped around the sheet 2. The fifth air cylinder 65 applies a constant tension to the sheet strip 43 by rotating the dancer arm 62 counterclockwise about the shaft 52. A displacement detector (not shown) is attached to the dancer shaft 69.
9 is detected, and this displacement signal is transmitted to a control means (not shown). The control means sends a correction signal to the motor of the roll core 2 winding the sheet strip 4 based on the displacement signal from the displacement detector. As a result, the roll core 2 rotates in accordance with the amount of displacement of the dancer shaft 69 based on the correction signal, applies a predetermined tension to the sheet strip 4 upstream of the roll core 2, and performs so-called dancer control. be exposed. Further, the control means is also capable of storing the current when the roll core 2 is performing dancer control, and rotating the roll core 2 based on this current. As a result, even after the dancer control is stopped, the roll core 2 continues to rotate in the same way as when it is under the dancer control, and so-called current control is performed. The sheet strip 4 on the upstream side of the guide roll 70 is sent out at a constant speed by a delivery roller (not shown) driven by a DC motor (not shown in FIG. 4).

The feeding speed of the sheet strip 4 is detected by counting the pulses emitted from the pulse generator of the DC motor, and based on this detection signal, one empty roll core 2 is moved at the same circumferential speed as the feeding speed. A command voltage for rotation is transmitted to the motor of one of the empty roll cores 2. Further, the actual voltage from a tacho generator (not shown), which is applied to the motor of the empty roll core 2, is compared with the command voltage, and the rotation speed of the motor is corrected.

As a result, one of the empty roll cores 2 rotates at the same circumferential speed as the traveling speed of the sheet strip 4, so that so-called speed control is performed. Furthermore, the number of revolutions of one of the empty roll cores 2 can be increased by the operation of a timer (not shown) by a limit switch (not shown) that detects the protruding motion of the cutter 20.

5 Next, the operation of one embodiment of the present invention will be explained.

First, the various rolls 70.68.71.22.2.3
The sheet strip 4 wound around the roll core 6 is taken up by the other fully wound roll core 2 and is traveling at a predetermined speed. At this time, if the sheet strip 4 is thick, the dancer roll 68 applies a large constant tension to the sheet strip 4 by the rotation of the dancer arm 62. Further, the other full roll core 2 performs the dancer control, and one empty roll core 2 is rotated clockwise at the same circumferential speed as the traveling speed of the sheet strip 4, thereby controlling the speed. Do the following.

Next, when the piston rod of the second air cylinder 40 is retracted, the winding arm 5 rotates clockwise around the bin 6, and the guide roll 7 is moved between the one roll core 2 and the lower guide roll 36. The sheet is brought into contact with and wrapped around the sheet strip 4 in between. When the winding arm 5 rotates further, the guide roll 7 winds the sheet strip 4 between the one roll core 2 and the lower guide roll 36 around the one roll core 2 . When the winding arm 5 rotates further, the guide bar 17 comes into contact with the sheet strip 4 between the guide roll 7 and one of the roll cores 2. When the wrapping arm 5 rotates until the piston rod of the second air cylinder 40 is completely retracted, the guide bar 1
7 winds the sheet strip 4 between the guide roll 7 and one roll core 2 around one roll core 2, as shown in FIG. Next, when the piston rod of the third air cylinder 45 protrudes, the nip arm 2I rotates counterclockwise around the bin 21a. When the protrusion 44 comes into contact with the piston rod of the fourth air cylinder 49, the nip
The arm 21 stops rotating, and the crimping roll 22 is not crimped to one roll core 2 but leaves a predetermined gap (about 1 to 3 mm) to the other roll core 2, as shown in FIG. Stop. At this time, the guide bar 17 guides the seven-sheet strip 4 between the guide roll 7 and one of the roll cores 2 toward the space formed between the pressure roll 22 and the roll core 2. next,
When a part of the piston rod of the first air cylinder 3rd protrudes, turn on the limit switch (not shown).
This limit switch sends a signal to a timer (not shown). Next, the timer is activated based on the signal from the limit switch, so that the input signal value to the motor that rotates one of the empty roll cores 2 is increased. As a result, the rotational speed of this motor increases, and the circumferential speed of one of the empty roll cores 2 becomes faster than the running speed of the sheet strip 4. Incidentally, completion of rotation of the winding arm 5 may be detected by a limit switch, and a timer may be activated to increase the rotation of the motor. Alternatively, the state in which the pressure bonding roll 22 approaches the roll core 2 may be detected and a timer may be activated to increase the rotation of the motor.

Next, when the piston rod of the first air cylinder 38 is fully extended, the blade 20 cuts the sheet strip 4 between the guide bar 178 and one of the roll cores 2. Here, the motor for two fully wound roll cores is connected to the sheet strip 4 on the upstream side of the fully wound roll core 2.
Since the tension is applied according to the material and thickness of the sheet, the blade 20 can easily cut the sheet strip 4.

Immediately before, at the same time, or immediately after this disconnection, that is, approximately at the same time as the disconnection, another timer operates based on the signal from the limit switch to operate a solenoid valve (not shown), so that the compressed air hits the pad 59. The disc 55 is brought into pressure contact with the disc 55, and the disc 55 is braked. Therefore, the dancer arm 62 is cut almost simultaneously with the cutting of the sheet strip 4.
stops rotating, and the dancer roll 68 stops moving.

Further, immediately after the rotation of the dancer arm 62 is stopped, the other fully wound roll core 2 is switched from the dancer control to the current control. Therefore, the other fully wound roll core 2 continues to rotate in the same manner as before cutting the sheet strip 4, and can scrape off the sheet strip 4 just at its cut end. The circumferential speed of the raw J-shaped core 2 becomes faster than the running speed of the sheet strip 4 at approximately the same time as the sheet strip 4 is cut.

Therefore, almost simultaneously with the cutting of the sheet strip 4, slipping occurs between the outer peripheral surface of the roll core 2 and the sheet strip 4 wound around the roll core 2. Moreover, since the dancer roll 6B temporarily stops its movement almost at the same time as cutting the sheet strip 4, it is possible to run the sheet strip 4 in the opposite direction to the direction in which the roll core 2 rotates, or There is no possibility of stagnation on the outer peripheral surface. During this time, another timer is activated based on the signal from the limit switch, so that the motor on the fully wound roll core 2 side stops rotating, and the fully wound roll core 2 moves the sheet strip 4 onto the guide roll. Rotation is stopped when the cut ends of the 7 cases are completely removed. At this point, the current control for the other fully wound roll core 2 ends. Next, another timer is activated based on the signal from the limit switch, and when the piston rod of the fourth air cylinder 49 is retracted, the nip arm 21 is further rotated counterclockwise by the third air cylinder 45. crimping roll 22
is pressed against one of the roll cores 2 via the sheet strip 4. At the same time as this pressure contact, the pad 59 is separated from the disk 55 by discharging the compressed air, and the dancer roll 68 starts moving again. Moreover, at the same time as this press contact, one of the empty roll cores 2 is switched from the speed control to the dancer control. Here, the cut end of the sheet strip 4 on the roll core 2 side is held between the pressure roll 22 and the roll core 2, so even if a large tension is applied to the sheet strip by the rotation of the dancer arm 62. Even if there is a roll, it is reliably wound onto one roll core 2 without being pulled back in the direction opposite to the running direction. Moreover, by pressing the pressure roll 22 against the roll core 2 through the sheet strip 4, it is possible to expel the air layer caught between the strips to the outside. As shown in FIG. 1, the circumferential speed of one of the empty roll cores 2 is made faster than the running speed of the sheet strip 4 at approximately the same time as the sheet strip 4 is cut, and the dancer roll 6 is set at approximately the same time as the sheet strip 4 is cut. Since the movement of the sheet is temporarily stopped and the pressure roll 22 is brought into pressure contact with the roll core 2 after the sheet strip 4 is cut, there is no possibility that the cut end of the sheet strip 4 will be loosened, wrinkled, or turned back. Moreover, the sheet strip 4 is reliably moved between the pressure roll 22 and the roll without being pulled back in the direction opposite to the rotating direction of the roll core 2 or stagnating on the outer peripheral surface of the Ronil core 2. It can be wound between the core 2 and the core 2. As a result, the ends of the sheet strip 4 wound around the roll core 2 may be defective or the sheet strip 4 may be damaged.
The sheet strip 4 can be wound up without causing defects due to deformation of the sheet strip 4 stacked on the defective end as the winding progresses. Next, by operating the first air cylinder 38, the blade 20 is retracted. Next, by protruding the piston rod of the second air cylinder 40, the winding arm 5 is rotated counterclockwise. Next, a touch roller (not shown) is slightly pressed against the sheet strip 4 wound around one of the roll cores 2. Next, when the piston rod of the third air cylinder 45 is retracted, the nip arm 21 rotates clockwise, and the pressure roll 22 is largely separated from the roll core 2.

At this time, since the sheet strip 4 wound around one roll core 2 is pressed against the touch roller,
It never expands.

Next, the piston rod of the fourth air cylinder 49 protrudes. While being wound onto one roll core 2, the other roll core is replaced with a new empty roll core. Next, when one of the roll cores 2 picks up a predetermined amount of the sheet strip 4 by continuous rotation, the support arm 1 rotates 180 degrees clockwise about the shaft 33. As a result, the fully wound roll core 2 is located on the other side, and the newly installed empty roll core 2 is located on one side, and the device returns to its original state as shown in FIG. The above is one cycle until winding is completed, and this operation is repeated thereafter.

As explained above, according to the present invention, even when the tensile force exerted by the dancer rolls is large, the sheet strip is pulled back in the direction opposite to the rotating direction of the roll core or stagnates on the outer peripheral surface of the roll core. An effect is obtained in that the sheet strip can be reliably wound between the pressure roll 22 and the roll core 2 without any problems.

In the above-described embodiment, the outer peripheral surface of the roll core 2 was subjected to a satin finish, so that the sheet strip 4 could adhere more closely to the outer peripheral surface of the roll core 2 after being cut than in the case of mirror finishing. It is possible to achieve the effect that the material can be appropriately slipped without any slippage, and the slack and wrinkles can be surely smoothed out. In addition, in the above-mentioned embodiment, the protruding motion of the blade is detected by the limit switch and the disc brake 4 is activated by the timer setting to temporarily stop the movement of the dancer roll. The completion may be detected by a limit switch and a timer activated. or,
The timer may be activated by detecting the state in which the pressure roll 22 approaches the roll core 2.

[Brief explanation of drawings]

FIG. 1 is an enlarged front view of the main parts of a device used in a conventional sheet strip winding method, and FIG. 2 is an explanatory diagram of the operation of the device used in a conventional sheet strip winding method. FIG. 3 is a front view showing an embodiment of a device for carrying out the method for winding up a sheet strip according to the present invention, FIG. 4 is a sectional view taken along the line IV-IV in FIG. 3, and FIG. The figure is an explanatory diagram of the operation of the above embodiment. ■...-Support arm, 2--Roll core, 4--Sheet strip, 5--Arm with 111 windings, 5 7...-Guide roll, 17-- 1--Guide bar, 20-----One sword, 22--Crimping roll, 6th--Dancer roll. Patent Applicant Teijin Mki Co., Ltd. Representative Patent Attorney Yugagun Part 6 Director General of the Patent Office Mr. Kazuo Wakasugi■, Indication of Case Patent Application No. 1983-103281 2, Title of Invention Method for winding sheet strip material 3. Relationship with the case of the person making the amendment Patent applicant Address: 1-9-1 Edobori, Nishi-ku, Osaka Name: Teijin Seiki Co., Ltd. 4 Agent: 151 Address: 2-6-9 Yoyogi, Shibuya-ku, Tokyo 2nd Tanaka Building Name Patent Attorney (7260) Arigagun Partial Telephone 370-2470 5. "Detailed Description of the Invention" column 6 of the specification to be amended, page 20, line 18 of the specification of the contents of the amendment. When it says “next”, say “again”
and correct it. that's all

Claims (1)

[Claims] a roll core rotatably supported by a support arm; a sheet strip running near the roll core; a rotatable guide roll wrapped around the sheet strip downstream of the roll core; a winding arm having a blade for cutting the sheet strip between the roll core and wrapping the sheet strip on the downstream side of the roll core around the roll core via the guide roll; a pressure roll that can be rotated while being wound around the sheet strip on the upstream side; and a dancer roll that is provided upstream of the pressure roll and applies tension to the sheet strip; A method for winding up a sheet strip, in which the sheet strip is cut by protruding toward a space formed between pressure rolls and wound around the roll core, substantially simultaneously with cutting the sheet strip. A method for winding up a sheet strip, comprising temporarily stopping the movement of the dancer roll.