JPH0643218B2 - Long sheet feeding method and sheet feeding device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention is obtained by winding a long sheet material such as fibrous paper, synthetic fiber made of synthetic fiber, synthetic resin film, and heat-shrinkable tube. The present invention relates to a method and apparatus for stacking a large number of rolls and continuously feeding long sheets from an uppermost roll to a lower roll.

[Prior Art] As a sheet feeding method and sheet feeding apparatus,
Although various proposals have been made, in the case of continuously supplying a sheet to a processing device, when the drawing of all the wound sheets from the roll that sets one roll in the processing device is completed,
A new roll must be set, and the work must be interrupted during the installation work. Also, even if the automatic splicing device is installed, the operator must remove the used roll support after feeding and set another new roll while feeding the sheet from the new roll. There is inconvenience. For this reason, in JP-A-58-177843, a number of rolls each having a sheet wound around a roll holder are stacked, and the rolls are wound around the winding start end of the top roll, that is, the rolls from the top roll to the bottom. The end of the sheet located on the innermost periphery of the sheet is connected to the end of winding of the lower roll adjacent to this roll, and further connected to the end of winding of the lower roll sequentially, and at the same time of the uppermost roll. A method of feeding sheets sequentially from the end of the winding is shown. Further, in the publication, a large number of rolls wound around a roll holder for feeding a sheet are stacked on a rotating plate, rotated by a drive source, and rolls supported by the rotating plate and having the same diameter upright in the center. A feeding device is shown, which is placed on the upper surface of the rotating plate through the above-described multi-layered rolls on a support rod and is fed out for feeding from the end of the winding on the outer periphery of the uppermost roll.

[Problems to be Solved by the Invention] In the above-described conventional method and apparatus, it becomes possible to continuously supply sheets from a plurality of stacked rolls, and to stop the processing device for a long time and supply the rolls. There is an advantage that work is not required, the down time of the processing device is eliminated, and the work efficiency is improved. However, since it is fed from the end of the outermost winding of the uppermost roll, it is limited to feeding the sheet from the outside of the roll in a lateral direction, and there is a limitation in the feeding direction. Therefore, if the innermost peripheral end of the roll and the outermost peripheral end of the next-stage roll are connected, the outer diameter suddenly increases, the rotation speed suddenly decreases, and uniform tension cannot be maintained. Also, if the roll overruns due to this connection, the long sheet falls from the roll holder and the sheet gets entangled, and if you apply a brake to prevent this, the roll gets squeezed and the control device for the possibility of sheet breakage is necessary. There is a possible problem.

In order to eliminate the above-mentioned conventional problems, it is an object of the present invention to improve the work efficiency so that the roll supply work takes a long time.

[Means for Solving Problems] The configuration of the present invention for achieving the above object will be described with reference to FIGS. 1 to 6 corresponding to the embodiments. A large number of rolls around which a long sheet is wound will be described. The long sheets are alternately stacked in the opposite winding direction to form a stacked roll group, and at the sheet winding start end located at the innermost circumference of the first roll located in the upper stage between vertically adjacent rolls. , The sheet winding start end located on the inner periphery of the lower second roll is connected, the winding end end of the second roll is connected to the winding end end of the third roll, and Connect the winding start end of the roll to the winding start end of the lower roll to make the upper and lower rolls of the stacked roll group continuous, and from the sheet winding end end located on the outer periphery of the uppermost roll. Supply of sheets that are pulled out and supplied to processing equipment A rotary plate on which the stacked rolls are placed, a drive source for rotating the rotary plate, a displacement detector for controlling the drive source, and a rotary shaft on which the rotary plates are mounted. A sheet feeding device having a fixed shaft or a reverse rotation shaft.

[Operation] In the present invention, since the sheet is started to be supplied from the outside of the uppermost roll by the above means, all the rolls are rotated around the axes of the plurality of rolls, so that the twist can be removed. Also, if the sheets in each roll are connected by adhesive, adhesive tape, etc., at the same time as the supply of the sheet of the uppermost roll is completed, the supply from the roll underneath continues, and so on. The supply can be performed continuously without interruption.

Further, the present invention, each roll is connected to the innermost peripheral end and the innermost peripheral end of the next lower stage roll, further because it is connected to the outermost peripheral end of the roll and the next roll outermost peripheral end, Since the winding diameter is the same when the roll is switched, the rotation speed does not change,
Therefore, uniform tension can be obtained, and the long sheet is not cut or broken. Moreover, since the winding directions are alternately reversed, the long sheet is not twisted.

If the roll center is misaligned due to the strength of the winding tightening of each roll, if the shaft centers are aligned so as not to impair the stability of the stacked rolls during rotation, problems with sheet feeding will not occur. Does not happen.

Further, in order to enhance the stability of the stacked rolls, a roll pressing pole that can be separated from the rotating plate may be provided. In this case, when the rotating plates rotate remarkably faster than the weight of the stacking rolls, the roll pressing pole can prevent the falling of the stacking rolls and the collapse of the stacking rolls due to the centrifugal force. In addition, a flexible liner made of foamed plastic sheet or paper is provided between the rolls to prevent the outer sheet from slipping downward.

Also, as shown in FIG. 4, if a pin that can be swung is provided on the pole instead of the liner and inserted between the rolls, a sheet can be placed in the direction of arrow A from the outside of the uppermost roll of the stacking roll that substitutes for the liner. When unwinding and feeding, the wrapping strength of the sheet with respect to the fixed axis or the reverse rotation axis is easy to handle because the sheet is not cut because the rotation drive source is accelerated and the sheet does not wrap and rolls. become. Further, in the feeding device of the present invention, since the rotary shaft supporting the rotary plate on which the stacked rolls of the sheets to be fed are provided with the fixed shaft or the reverse rotary shaft for winding the sheets, the feeding of the sheets When the sheet is pulled, the sheet coming out of the outermost roll of the uppermost stage is fed to the processing apparatus through the fixed roller 23 and the slack detecting roller 29. Further, when the sheet is tightly wound around the rotating shaft or the reverse rotating shaft, the slip resistance of the sheet is increased or locked, and the sheet is no longer fed, the slack detection roller 29 moves to the upper portion (C direction). The rotary drive sources 13 and 14 are accelerated according to the amount of movement of the slack detection roller 29, which is detected by the device 30. By this speed increase, the lock of the sheet is released, and the sheet supply is restarted. Since the rotating plate and the roll are accelerated, the wrapping of the sheet becomes loose and the slack detection roller 29 moves downward (arrow D).
Move to. This downward movement is caused by the displacement detector 30
The rotation drive sources 13 and 14 are decelerated according to the amount of slack movement of the slack detection roller 29. By repeating the above-described operation repeatedly, the sheet can be smoothly sent to the processing device from the uppermost roll to the lowermost roll. When the slack detecting roller 29 enters the lowermost position of the rail 35, the rotary drive sources 13 and 14 are stopped.

In addition to the drive sources 13 and 14, the drive sources 24 and 25 and the rotary shaft 12,
By providing the rotary plates 15 at two positions, respectively, while continuous feeding of sheets from the stacking rolls on one rotary plate is performed, stacking work on the other rotary plate and sheets between the rollers are performed. The connection work of is performed. Further, since the fixed shaft 18 or the reverse rotation shaft 19 can be detached from the rotary plate and attached, the above-mentioned preparation work can be facilitated. As described above, according to the method and apparatus of the present invention, since the sheets are sequentially and continuously sent out from the stacking rolls, for example, the rolls obtained by winding one roll with a width of 40 mm are supplied at 34 m / min. When feeding to a processing device such as a press at a speed, if the operating time is 8 hours a day, the required length is 16000 m.
16 rolls are required for 1000m rolls,
When the rolls are mounted and supplied one by one, setup work for mounting the rolls is required up to 16 times a day, but in the present invention, if 16 rolls are stacked, the rolls can be replaced all day long. There is no need. Even if a minimum of 8 rolls are stacked, replacement can be done only once during the day, improving productivity. Moreover, in the method of the present invention, the processed loin of the material generated every time the rolls are replaced is reduced, and the only place where the material loin becomes is the sheet joint between the rolls.

[Embodiment] An embodiment of the method and apparatus of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 is a first roll located at the uppermost stage, and a second roll 2 located at the lower stage from the first roll 1, and similarly among the sheets 4 extending from the third roll 3, The connection with the outside is shown. The winding start end of the third roll is connected to the winding start end of the lower roll. The rolls 1 to 3 are, for example, kraft papers having a width of 40 mm, which are coated with a starch agent for dry batteries and dried, and are wound up by 1000 m. The sheet 4 referred to in the present invention is not limited to the above-mentioned paper, but a non-woven fabric made of synthetic fiber, a synthetic resin film, or a heat-shrinkable vinyl chloride or vinylidene chloride tube having a flattened diameter. The flexible sheet of (1) is made of a material that can be fed from a roll to be supplied to a processing device (not shown) such as press punching or constant-dimension cutting. The supply is performed by pulling out the winding end end 10 of the uppermost roll 1 in FIG. The connection of the sheets 4 is carried out by stacking the winding start end portion 5 of the sheet located on the innermost circumference of the uppermost first roll 1 to be stacked, that is, the sheet of the first roll of FIG. The lower surface of the roll 1, that is, the winding start end portion 6 of the sheet located on the inner circumference of the next second roll 2 located on the lower stage, is attached to each other by an adhesive tape (not shown) or an adhesive (not shown). Connect the sheets. The second roll 2 and the third roll 3 connect the winding end ends of the outer circumference and connect the sheets between the rolls located at the lowermost stage. High frequency welding other than the above,
It may be carried out by a method other than the pressure-sensitive adhesive such as biting pressure welding, and the number of stacked rolls is determined by the length of the roll per roll, the speed of the sheet feeding device and the required speed of the sheet-like material. It is determined by the length of the. For this connection, the winding directions of the long sheets may be alternately reversed. If the first roll is left-handed, the second roll may be turned upside down and right-handed. The winding direction is right, left,
Right and left can be used to eliminate the twist of the sheet surface that occurs when the long sheet is unraveled. Further, the ends of the seat can be connected inside and outside, or outside and inside and inside, respectively.

1 and 2 show a state in which the liner 7 extends between rolls of the sheet between the stacked rolls of the present invention, and the liner 7 is placed on the outermost periphery of the roll 8 located at the bottom stage. It is preferable that the end portion 9 of the sheet at the end of winding is fixed to the surface of the sheet with an adhesive tape in order to prevent deviation during rotation. Then, the winding end end 10 of the roll 1 located at the uppermost stage of the stacked rolls in FIG. 2 is pulled out in the upward direction (arrow A). When the uppermost roll is sequentially supplied to the processing device, the lowermost roll can be continuously supplied. In this embodiment, the rolls are merely stacked and the sheet is fed out from the fixed state. However, the stacked rolls are placed in the rotating plate connected to the rotary drive source shown in FIG. You may give the rotation direction shown by the arrow of the B direction in the figure.

FIG. 3 shows a perspective view of a main part of the supply device in one embodiment of the present invention. In this embodiment, the rotary plate 15 is attached to the rotary shaft 12 and maintains a horizontal state.
A large number of stacked rolls are connected and placed between the rolls as shown in FIG. 2, and supplied from the winding end end 10 of the uppermost roll 1 in FIG. 3 to the processing apparatus. If the rotation speed of the rotating plates of the stacked rolls is extremely high, the stacking rolls will collapse and the sheets will be cut because of the positional displacement due to centrifugal force.Therefore, the size should be adjusted according to the height of the stacking rolls. Further, a holding pole 16 having a size that fits the outer dimensions of the roll or has a slightly larger allowance is provided.
This pole 16 has a pin that can be swung as shown in FIG.
17 may be provided and sandwiched between each roll.

FIG. 5 shows a cross-sectional view of the main parts of the supply device in the embodiment of the present invention. That is, the rotary shaft supported by the frame 11
The drive source 13 and 14 for driving 12 and a rotary plate 15 attached to the rotary shaft 12 for maintaining a horizontal state, the rotation upright through the central hollow portion of the roll group stacked on the rotary plate 15 A sheet winding rod 20 having a fixed shaft 18 or a reverse rotation shaft 19 shown in FIG. 6 is provided at the top of the shaft.
Further, a rod 21 is attached to the frame 11 at a position apart from the rotary plate, an arm 22 is fixed to the upper end, and a fixed roller 23 on which the sheet slides is attached to this arm. The drive sources 24 and 25 are arranged in parallel with the rotary plate 15.
Further, the rotary plate 12 rotated by the drive source 25 is provided with the rotary plate 15 which is mounted in the horizontal state similarly to the above. Further, the winding end end portion 10 of the sheet sent out from the uppermost roll of the roll group is pulled out and wound around the fixed shaft 18 of the winding rod 20, further slid on the fixed roller 23, and further on the frame 11. It has a slack detection roller 29 attached to the fixed arm 28 attached thereto, and a displacement detector 30 for detecting the vertical position of the detection roller 29 in conjunction with the slack detection roller 29, and further, rollers 31, 32 fixed to the upper left and right of the fixed arm 28. , 33 are attached respectively. From the rod 21 fixed roller 23,
Further, the leading edge of the sheet is stretched between the fixed rollers 31 and 32, the slack detecting roller 29, and the fixed roller 33, and is fed out toward a processing device (not shown). 34 in the figure is
It is a slack absorbing roller. In this embodiment, when the sheet is fed in the above-mentioned direction, it is fed while sliding the winding rod 20. If this state continues, the sheet is tightly wound around the fixed shaft 18 or the reverse rotation shaft 19, the slip resistance increases or is locked, and the sheet is no longer supplied, and the slack detection roller 29 moves upward (direction of arrow C in the figure). This is detected by the displacement detector 30, and the rotational drive sources 13 and 14 are accelerated according to the amount of movement of the slack detection roller 29. By this speed increase, the locking or tight wrapping of the sheet on the fixed shaft or the reverse rotation shaft 19 is released, and the feeding of the sheet is restarted. Since the rotating plate 15 and the roll group are accelerated, the sheet winding is alleviated, the slip resistance is reduced, and the slack detection roller 29 moves downward (indicated by arrow D in the figure). This movement is detected by the displacement detector 30, so that when the slack detecting roller 29 reaches the lowermost position 36 of the rail 35 of the fixed arm 28, the rotary drive sources 13 and 14 are stopped. In addition,
39 is a fixed rod that holds the two fixed shafts 18 so that they do not rotate. FIG. 6 shows another embodiment of the device of the present invention,
Reverse rotation axis drive source 37, coupling on top of winding rod 20
It is shown that 38 is attached and the reverse rotation shaft 19 is driven, so that the reverse rotation is performed when the seat is locked.

[Effects of the Invention] As described above, according to the present invention, it is possible to continuously supply a sheet from a roll for a long time, and it is possible to provide a method and an apparatus without downtime of setup work.

[Brief description of drawings]

FIG. 1 is a perspective view of a method of connecting sheets in an embodiment of the present invention, FIGS. 2 and 3 are perspective views of feeding sheets from a stacking roll of the present invention, and FIG. 4 is an apparatus of the present invention. FIG. 5 is a cross-sectional view of an essential part with a roll holding pin attached thereto, FIG. 5 is a cross-sectional view of an essential part of an apparatus of the present invention, and FIG. 6 is a cross-sectional view of an essential part of another embodiment of the present invention. 1 ... Top roll 5,6 ... Winding start end 9,10 ...
… End of winding, 13,14 …… Drive source, 12 …… Rotary shaft, 15
...... Rotating plate

Claims (2)

[Claims] 1. A large number of rolls wound with a long sheet are alternately reversed in the winding direction of the long sheet, and stacked in multiple stages to form a stacked roll group. , The innermost sheet winding start end of the first roll located in the uppermost stage is connected to the innermost sheet winding start end of the second roll located in the next stage, and The outermost winding end is connected to the outermost winding end of the third roll, and the innermost winding start end of the third roll is the innermost winding of the next lower roll. Connect the long end sheets of the upper and lower rolls adjacent to each other in the stacking roll group so that they are connected to the start end, and pull out the winding end end of the outermost long sheet of the uppermost roll, A method for supplying a long sheet characterized by supplying the sheet. 2. A large number of rolls around which a long sheet is wound, the winding directions of the long sheets are alternately reversed, and the rolls stacked in multiple stages are placed between the upper and lower adjacent rolls. The innermost winding start end of the roll is connected to the innermost winding start end of the next lower roll, and the adjacent upper and lower rolls are connected at the inner and outer ends and the uppermost roll A sheet feeding device for pulling out the outermost peripheral sheet winding end portion of the roll and supplying the sheet to a processing device, wherein the roll is a multi-stage rotating plate, and a drive source for rotating the rotating plate, A displacement detector for controlling the drive source,
A sheet feeding device comprising a fixed shaft or a reverse rotating shaft on a rotating shaft to which the rotating plate is attached.