JPS60157443A - Accumulator for absorbing differential speed of sheet material - Google Patents

Abstract

PURPOSE:To maintain tensile force constant by lifting/lowering roll groups at lifting/lowering sides positively in accordance with the difference of travel speed of sheet material at the inlet/outlet sides of accumulator. CONSTITUTION:Fixed side roll group 9, lifting/lowering side roll group 10 arranged liftably/lowerably below said roll group and drive system for lifting/lowering the roll group are provided. Then sheet is stretched alternatively in hair- pin shape between each guide roll 9-1-9-5 in fixed side roll group and each guide roll 10-1-10-4 at liftable roll group between sheet feed-out process and feed-in process. The outlet guide roll of fixed side roll group is rotated positively in synchronization with the feeding speed of sheet material in feed-in process and upon occurrence of differential travel speed of sheet between the feed-out process and the feed-in process, the liftable side roll group is lifted/lowered positively with such speed as corresponding with the differential speed through a driver.

Description

[Detailed description of the invention]

[Industrial Application Field 1] This is a temporary difference in processing speed between the front and back processes of a line in which sheet-like materials such as synthetic resin film, metal foil, and carbon cloth run. When this occurs, the sheet material is stored in an accumulator for absorbing the speed difference while maintaining a weak constant tension. (Prior art) The above-mentioned accumulator for absorbing speed differences in sheet-like materials is widely used in sheet winding lines, etc., but in the case of thick fabrics, thin films, especially stretchable synthetic resin films, etc. When used to absorb speed differences, it is required that the tension applied to the sheet-like material (hereinafter referred to as "sheet") be sufficiently small (and constant) so that the speed difference can be absorbed. In order to prevent the sheet tension from changing even when the accumulator is in operation, the present applicant has previously proposed various new configurations for the accumulator. There is a method known from Japanese Patent No. 46424. This f'L automatically controls the drive device so as to obtain an accumulator lifting speed commensurate with the sheet speed difference between the front and rear processes. The roll group on the lifting side of the accumulator is actively driven up and down, and although this configuration has been able to achieve the desired results, the number of rotations of each guide roll that occurs when the accumulator is moved up and down is still low. Films with delicate properties are affected by the inertial force brought about by the fluctuations, which causes changes in the sheet width due to tension fluctuations, which inevitably leads to deterioration in product quality.Such problems arise. The main reason for this is that each guide roll that releases the accumulator or the driven structure is the main cause, but it is theoretically supported that a constant small tension can be maintained by actively driving each guide roll. Even if it were, the fluctuation would be large, and if it were to be controlled to perfectly match the rotational speed with the sheet stretched over the guide rolls, it would result in a very complicated structure that would be impractical. However, the current situation is that it is still necessary to use the device while allowing slight tension fluctuations. [Objective of the Invention 1] In order to deal with this fact, the present invention has been developed to solve the problems that have been considered as concerns in the past. It was created to solve the problem,
By using a simple mechanism, it is possible to maintain the tension applied to the sheet at a constant value as weak as possible, regardless of the number of changes in the sheet exit/input speed, thereby reducing the amount of gravity equal to one mechanical resistance. Our aim is to make effective use of the accumulator and to stabilize the quality of processed products by satisfactorily performing the sheet speed difference absorption function and constant tension application function without being influenced by external conditions. It is intended for the purpose of invention. [Structure of the Invention] The FIA of the present invention is particularly equipped with a fixed side roll group, an elevating side roll group provided below the roll group so as to be able to rise and fall, and a drive device for moving the roll group up and down. and the feeding process, the sheet is passed between each guide roll of the fixed side roll group and each guide roll of the lifting side roll group in an alternating hairpin pattern, and the rack is passed between each guide roll of the fixed side roll group and each guide roll of the lifting side roll group, and The exit guide roll is actively rotated in synchronization with the speed of the sheet material in the feeding process. When a difference in running speed occurs between the sheets in the feeding process and the feeding process, an accumulator for sheet-like materials is configured such that the lifting side roll group is actively moved up and down by the drive device at a speed corresponding to the speed difference.・0 In addition, the invention The belt accumulator is provided with a lifting side roll group and is arranged in front and back with respect to the sheet-like accumulator.The belt accumulator is a component of the belt accumulator, which includes an elevating side roll group and a belt accumulator that is arranged in front and back of the sheet-like accumulator. A rack is installed in an alternating hairpin pattern between each guide roll of the lifting side roll group for each guide roll held heddle. For the belt pulleys of equal diameter, the racks are arranged in an alternating hairpin pattern that matches the sheet, so that the lifting and lowering operations of the lifting side roll group and the belt lifting side roll group are opposite to each other, Further, the belt storage capacity of the belt accumulator is made larger than the sheet storage capacity of the sheet-like material accumulator, and the sheet rack is configured to move the lifting side roll group passed at an appropriate speed. At the same time, the endless belt can actively rotate each guide roll of the accumulator for sheet materials at an optimal speed, and the tension required to tension the endless belt is applied exclusively to the accumulator for sheet materials. It is possible to absorb this so that it does not affect the sheet, and thus the intended purpose is achieved. [Example] Hereinafter, an example of J of this invention will be described based on the attached drawings. This will be explained in detail. In Fig. 1, 8 (1j) is provided at the rear end of the sheet feeding process.In the feeding device, a pair of rolls (la
d. A nip roll consisting of 1 lb is moved by a motor [M,]
The sheet (S) sandwiched between both rolls +la+ and 1 lb is continuously fed in the direction of the arrow at a predetermined speed IV, ]. +41 is a manipulating t'L device installed at the front end of the sheet ISI feeding process, and a pair of rolls +4al, [4b
) is driven by a motor (M2), and both ends are inserted between 4al and 4b1.
C8) is the velocity (v2]1i1 always the velocity (V,) (!
- same speed) to a rear winder (not shown) for processing. +51. With the Ifill dancer roll, the amount of rocking displacement is detected by a detector +71. It is possible to extract it as a correction signal using igl, and the dancer roll +51 will be described later.
j6 To correct the rotation of the exit roll [9-,). Further, the dancer roll +61 is used to correct the rotation of the feeding device (4). Between the feeding device +11 and the manipulating device (4). Accumulators for sheet-like objects +21 (!: Accumulators for belts +31 i are arranged in front and back. First, the accumulator for sheet-like objects (21 is the initial number, for example, five guide rolls [9-, > ~ ( 9-, ) are rotatable around their respective axes, and are arranged parallel to each other's axes and horizontally in parallel at a predetermined level. For example, four Tsukaido rolls (lo-, ), [1o-4] are each rotatable around their respective axes and are arranged horizontally in parallel parallel to each other's axes to form a support frame Q21.
The fixed side roll group 19+
The lifting side roll group +101, which can be raised and lowered simultaneously in the approaching and separating directions while maintaining parallel from below, and the motor [M3]
It is composed of a drive device (I II) that moves the lifting side loaf group (lO) up and down using as an element. The structure is based on the Special Publick Act of 1984.
Since it is sufficient to adopt a known method according to Japanese Patent No. 46424, details thereof will be omitted. Next, the belt accumulator + a + ta multiple 11 pieces, for example, 4 guide rolls (13-, ]) drive 13-, l
are rotatable about their respective axes, are parallel to each other's axes, and are arranged horizontally in parallel at a certain level slightly lower than the fixed roll group +91.
The same number of guide rolls as the roll group (+3) +14-, ]
] Drives 14-, ] are rotatable around their respective axes, and are arranged horizontally parallel to each other in parallel with each other's axes, and are supported on a support frame 051 to form an integral structure, and are connected to the belt fixed side roll group 031 from below. It is composed of a belt lifting side roll group 04) that can be lifted and lowered simultaneously in the approaching and separating directions while maintaining parallelism. A weight QG+ for constantly applying a force in the direction of gravity is attached to the support frame 05) described in 1jII. Both accumulators with the above configuration +21. [For 31, accumulator for sheet material (21ha sheet (
S] Kinkata Idol

[9-Mountain(101L(92)+(1
02]...+1o Jul[9-,] After passing the racks in an alternating hairpin pattern, the dancer roll (61) is reached at 110,000, and the belt accumulator (3) is attached to the endless belt Qη. From the exit guide roll [9-51 to the direction roll [14-, +1 (13-, 3...[14-,
), (1, 3-,] are passed in the order of alternating hairpins, and each guide roll [9-11, [ 10 pieces L19-23+[lOa)...
・Ija marked on the circumferential surface of the end of 0-31) [S]
The rack is tensioned by passing it in the shape of alternating hairpins that match the . As is clear from the above explanation, the endless belt θη is for rotating the fJIC sliding sliding type lower idle roll, and it is sufficient to have a width narrower than the width of the endless belt θη compared to the sea) [8). , therefore each guide roll (13-
11~(13-41, (14-, 3~(14-,) is -
A short length is sufficient, - 1,000, each guide roll [9-, 1
~19-, l. Cxa-, ] ~ (10-4) U The length of the length of the sheet (s) may be longer than the width of the sheet (S), and the rack can be passed by arranging the sheet (S) and the endless belt force. Roll (9-11 ~ [95L l 10
-11 ~ (In contrast to 10-41, a belt pulley with the same diameter as the dog is directly connected to the shaft. Of course, there is no problem even if an endless belt aη is passed over a rack. In this way, the seat (S), the endless Both accumulators +21 and 131 are connected to the first
As shown in the figure and FIG. 2, when the lifting side roll na21 moves up, the lifting side roll group 041 for company belts moves down,
On the other hand, when it descends, it ascends, and the endless bell (Q7+) is moved so that each raising and lowering operation is contrary to the other. Accumulator +21
It is necessary to make the storage capacity larger than the sheet storage capacity of . In addition, the exit guide roll 19-.l of the accumulator for sheet-like materials (2) is moved by the motor in synchronization with the speed of the sheet in the feeding step +41.

[M4] enables active driving. Next, both accumulators +21. To explain the operation for absorbing the seat speed difference by +31, during steady operation, V,
= v, and each guide roll (9-13..., (
10iI...+ (13-1..., [14-, l
The circumferential speed of ... is V. +j; both roll groups ll01. α41 exists in stereotaxy and does not move. If a speed difference occurs between the front and rear processes, as described in the above-mentioned publication, the lifting side roll group +101 is (Vt-Vφ

[
Since ・ is the lifting side roll group (101 guides, the number n is n = 4 in this example), the roll group (10) is actively moving at a speed of (vl-vsu). It is raised and lowered. At that time, each guide roll [9-heavy] ~ [9-, l,
110-,]~Bo-4], the circumferential speed of the entrance idle roll (9-, l is vl, the exit guide roll (9-,
The circumferential speed of ] is V, and the circumferential speed of each guide roll in the middle differs greatly, jf I) - o - le Bo -,] tD circumferential speed "" + X[
"I V2]...K] Circumferential speed of guide roll [9-21...Vt-y4[Vt V2]...(J guide roll 110-2) circumferential speed -v, -3/8 (V, -
Vt1-pq Guide roll (9-,) circumferential speed "" 3
'z' vIV2) ... (=1 guide roll 1lo
−, ] peripheral speed...V, -%EV, -V, ]...(
e) Circumferential speed of guide roll [9-,]...vl-V4
[vI-v2] °°・(to) Guide roll (lo-,]
The circumferential velocity...V, -%(V, -Vt1...()l. Now, the feeding device Il+ is driven by the motor (Ml). The signal of the rotary generator [TGll is transferred to the motor (M4 ), and if it is corrected by the dancer roll (5), then the speed command is (!: * No fHAt bell) [+71 is both accumulators! Since the rack is passed to 21 and +31, all guide rolls are It is actively driven in synchronization with the feeding device (1), and the signal from the rotary generator (Te3) is used as the speed command for the feeding device (41), which is corrected by the dancer roll (6), so that the entire line is While run 1= continues actively and synchronously, the motor (
When M4) causes a speed difference in the rm process such as deceleration or stop, the motor

[M, ] is driven to lower the elevating side roll group (10). In this way, when the sheet accumulator (21) operates on the downward side, that is, on the sheet accumulation side, the belt accumulator +31 inevitably operates on the upward side, that is, on the belt release side, due to the action of the weight θ6, and therefore, , each guide roll (9-,) to (9-4), (10
-8] ~ [10-41 for each formula

It is actively rotated at the same rotation speed as shown in [A] to [G], and as a result, each guide roll is rotated at a circumferential speed that suits each guide roll. No unnecessary tension is applied to the sheet Is), and the function of absorbing the sheet speed difference under slight tension can be fully achieved.

【Effect of the invention】

The present invention provides an accumulator for sheet materials [2+] in which the elevating side roll group (lO) is adjusted to an active
J. By lowering the sheet material [
It is possible to absorb the speed difference without causing any sagging or wrinkles in the sheet material (S) while keeping the tension applied to the material S) constant and at a weak value. Then, the belt accumulator [31 and the accumulator +21 are combined to form both accumulators +2+
, Since the endless belt 07I is passed to 1311%U and the exit guide roll (9-) of accumulator +21 is fully driven, the accumulator +2
177) By making it possible to properly match the rotational speed of the J guide rolls to a speed suitable for each dog, that is, to the speed of the sheet-like object being stretched and traveling, and therefore allowing each guide roll to actively rotate, Furthermore, it is possible to reduce the tension applied to the sheet-like object, making it truly optimal as an accumulator for sheet-like objects that run under minute tension.

[Brief explanation of the drawing]

FIG. 1 shows a sheet-like article according to an embodiment of the present invention. FIG. 2 is a schematic diagram showing the structure of the main part of the apparatus, and FIG. 2 is a schematic diagram showing the dynamics of the sheet-like material accumulators and heald-like material accumulators in FIG. 1 during sheet-like material accumulation and movement. (21... Accumulator for sheet-like materials. (3)... Accumulator for belt. +91... Fixed side roll group. 19-,] [9-, 1... Guide roll. Plate... Lifting/lowering Side roll group t [10-,) l 10-,]...Guide roll. (River... Drive device. (13)... Fixed side roll group for heald. 11311 (13-++1... Guide roll. θ4J... Bell) 4111. (II roll group. l 14-, + Guide roll for (14-,). Q71... Endless belt.

Claims (1)

[Claims] 1. A fixed side roll group (9), an elevating side roll group +101 provided below the roll group (91 so as to be able to rise and fall), and a drive device (11) for moving the roll group (10j up and down). The sheet-like material (S) is separated between the feeding process and the feeding process of the sheet-like material (S), and the fixed side roll group (9
) of each guide roll " rL (9, t) and each side of the lifting side roll group (1 mouth) 0-A/[10-mount (10-,
), and the exit guide roll (9-al) of the stationary roll group (9) is actively rotated in synchronization with the speed of the sheet material in the feeding process, and When a difference in running speed occurs between the sheet-like material [8] in the step and the feeding step, the elevating side roll group (10) is moved by the drive device (If).
An accumulator +21 for sheet-like materials which is configured to be actively moved up and down at a speed corresponding to the speed difference, and a fixed side roll group t13 for belts, which is provided below the roll group 031 so as to be able to rise and fall, and which is capable of being moved up and down in the direction of gravity. A belt accumulator +31 (consisting of an endless belt a7), which includes a lifting side roll group 041 for the constantly applied gae belt and is arranged in front and back relative to the sheet accumulator (2). Accumulator (31
Each guide roll (14-mount [14-, l
The racks are arranged in an alternating hairpin pattern between the sheet accumulator (21) and each guide o.
-/lz [9-mountain [92], +10-mountain (10-21), or each of those guide rolls (9-mountain [97,),
[10-Mountain (10-2)] The rack is passed in an alternating hairpin shape that matches the sheet-like material (SJ) to a belt pulley of equal diameter attached to the shaft of the lifting side roll group ( 10) and the belt elevating side roll group (141) so that the respective elevating and lowering operations are opposite to each other, and the belt accumulator +
3177) An accumulator for absorbing speed differences in sheet-like materials, characterized in that the heald storage capacity is made larger than the sheet storage capacity of the sheet-like material accumulator 121.