JPH01247357A - Cloth unwinding device for cloth stretching machine - Google Patents

Abstract

PURPOSE:To rationalize cloth unwinding work and to improve its efficiency by reciprocatively moving a movable base at short stroke, and making a cloth unwinding roller abut intermittently plural times on the surface of an original cloth roll to certainly draw out the end of a cloth. CONSTITUTION:A cloth unwinding roller 13 is rotated, and thereby a movable base 12 advances to an original cloth roll 4 to abut on its surface, and then a controller controls a movable base driving means to make the movable base 12 move reciprocatively at a short stroke. The cloth unwinding roller 13 being in rotation therefore abuts against the surface of an original cloth roll 4 intermittently plural times. Thus, even though the quantity of a cloth drawn out by the once abutting of the cloth unwinding roller 13 against the surface of the original cloth roll 4 is very little, the abutting action executed intermittently plural times of the roller 13 can certainly draw out the and of the cloth 4a as long as required from the surface of the original cloth roll 4. Cloth unwinding work can therefore be improved in its efficiency and rationalized.

Description

Detailed Description of the Invention (Industrial Application Field) The present invention is a method for cutting a heavy object fed out from a roll of raw material from a loom into required lengths and stacking them on a workbench for processing such as cutting. The present invention relates to a unfolding device used to pull out the end of a heavy body from a roll of fabric supported by a fabric supporter in a fabric spreading machine that performs fabric spreading operations such as folding.

(Prior Art and Problems to be Solved by the Invention) As is well known in the art, the above-mentioned roll spreading machine is equipped with a roll that can forcibly rotate the roll in the unraveling direction while supporting the roll horizontally. An anti-support part is provided.

In conventional sheet spreading machines, even if it is possible to mechanically feed and transfer the web roll to the web support section, the heavy end of the web roll on the web support section is transferred onto a conveyor or roller for feeding out the heavy body. The unraveling work to extract it had to be done manually.

Therefore, even if the spreading machine is capable of automatically supplying the raw rolls and performing the spreading operation, a great deal of effort and time is required for the unrolling work after the raw rolls are transferred. Complete rationalization could not be achieved: (Means for solving the problem) In order to solve the conventional problems as described above, the present invention
A movable table movable in a direction near and far with respect to the unraveling side surface of a material roll supported horizontally on a material support part of a spreading machine, a drive means for reciprocating the movable table, and a movable table pivotally supported on the movable table. A drivable unraveling roller and a controller for controlling the movable table driving means, the controller comprising:
After the movable base is moved forward and the unraveling roller comes into contact with the surface of the raw roll in a rotating state, the movable base is reciprocated in small strokes so that the unraveling roller touches the surface of the raw roll multiple times. The present invention proposes a unraveling device for a spreader that is configured to make intermittent contact.

(Function) Once the fabric roll has been transferred onto the fabric support section, the movable platform is advanced in the direction of the fabric roll by the movable platform drive means while the unraveling roller is rotationally driven in a predetermined direction. move it. After the unraveling roller first comes into contact with the surface of the raw roll, the controller controls the movable table driving means, so that the movable table reciprocates with a small stroke, and the rotating unraveling roller The roller comes into contact with the surface of the raw roll intermittently multiple times.

In other words, the rotating unrolling roller repeatedly contacts the surface of the unwinding end of the heavy body on the surface of the raw fabric roll multiple times. Therefore, if the driving torque of the motor that drives the unraveling roller is small and the unraveling roller is brought into continuous contact with the surface of the raw roll, the unraveling roller may stop. In this case, even if the amount of heavy material pulled out by the unwinding roller touching the surface of the raw fabric roll once is small, the unraveling roller contacts the surface of the raw fabric roll intermittently multiple times. This allows the end of the heavy body to be reliably pulled out the required length from the surface of the raw roll. In other words, it is sufficient to reciprocate the movable base with a small stroke until the end of the heavy body is reliably pulled out, and the length can be determined by the elapsed time or the number of reciprocations of the movable base.

(Example) An example of the present invention will be described below based on the attached illustrative drawings.

In FIG. 1, reference numeral 1 denotes a conventionally well-known fabric spreading machine, which can reciprocate on a fabric spreading workbench 2 in the length direction of the workbench 2, and is attached to an upper fabric support part 3. The heavy body 4a4r is unwound from the horizontally supported raw fabric roll 4, and can be sent to the heavy body back and forth sorting and cutting device 8 via the first belt conveyor 5, the second belt conveyor 6, and the unwinding roller 7.

The original fabric support section 3 includes a pair of front and rear belt conveyors 9A.
, 9B are arranged in a V-shape, and the belt conveyor 9A on the sheet transfer side can be swung up and down to change the angle. When transferring to the top, the belt conveyor 9A is laid down outward as shown by the imaginary line, and the raw material roll 4 rolls on this laid-down belt conveyor 9A and collides with the other belt conveyor 9B. Reach intermediate position. The configuration of the fabric support section 3 using the pair of heat conveyors 9A and 9B is one example, and includes, for example, an inclined rail that supports the fabric roll 4 via its core shaft 4b, and a lower end side of the inclined rail. The original fabric support part may be configured in combination with a drivable heavy body delivery roller that comes into contact with the unraveling side surface of the original fabric roll 4.

Reference numeral 10 denotes a dissolving device according to the present invention, in which a guide rail 1
A dissolving roller 13 is pivotally supported at the tip of a movable base 12 that can reciprocate along the movable base 12.
are a pair of belt conveyors 9A and 9 of the original fabric support section 3.
It is possible to approach and move from diagonally above the unraveling side surface of the raw fabric roll 4 supported on B (the side where the belt conveyor 9B for delivering heavy objects is located).

As shown in FIGS. 2 and 3, the unraveling roller 13
is horizontally supported on the left and right side walls 12a, 12b of the movable base 12 via bearings 14a, 14b and both end support shafts 13a, 13b, and has a reaction ring 13c made of a soft elastic material such as sponge. They are attached at appropriate intervals in the direction. Ml is a motor that drives the unraveling roller 13, and includes a drive shaft 16 supported on one side wall +2a via a bearing 15, and a drive shaft 16 and a support shaft 13a of the unraveling roller 13. Timing pulley attached to +7. +8, and both timing pulleys 17.1
It is interlocked and connected to the unraveling roller 13 via a timing heald 19 suspended between the rollers 8 and 8.

20 is a driving means for the movable base 12, and includes both side walls 12a.
, +2b, a drive shaft 22 rotatably supported via bearings 21a, 21b, and a pair of left and right fixed chinos 23a attached above the pair of left and right guide rails 11 that guide the movable table 12.

23b1 Gear wheels 24a, 2 fixed to both ends of the drive shaft 22 so as to mesh with these re-fixed chains 23a, 23b.
4b, a motor M2 connected to one end of the drive shaft 22;
, and a torsion coil spring 25 for biasing the movable base 12 in the upward direction. This torsion coil spring 25 is loosely fitted onto the drive shaft 22, and has both ends locked with a spring locking member 26 fixed to the drive shaft 22 and one side wall +2a. In addition, 27 is a guide wheel that fits into the pair of left and right guide rails 11, and is a guide wheel that fits into the pair of left and right guide rails 11.
, +2b. Of course, instead of the guide wheel 27 that fits into the guide rail 11, it is also possible to use guide wheels that sandwich the guide rail from above and below.

As shown in FIG. 4, the timing belt 19 of the transmission system that drives the unraveling roller 13 is configured to be tensioned by a tension pulley 28. As shown in FIG. This tension pulley 28 is the driving side timing pulley 1
Timing held 19 on the side that is pulled by the rotation of 7.
The unloading roller 13 is supported by a movable arm 30 which is biased in the direction of the arrow 29 (the spring is not shown) so as to be in pressure contact with the roll. As shown in the figure, the movable arm 30 moves in the direction of the arrow 29 and the tension pulley 28 tensions the timing heald 19, but as shown in FIG. When pressure is applied and a load is applied, the timing heald 19 on the side pulled by the drive side timing pulley 17 is tensed linearly and pushes the tension pulley 28 outward.
Since the movable arm 30 moves in the direction of the arrow 31 against the force, the unraveling roller 13 moves against the original fabric roll 4.
As a detector for detecting that the movable arm 30 is in pressure contact with the movable arm 30, a Mitswitch LSW is provided for detecting the movement of the movable arm 30 in the direction of the arrow 31. In the illustrated example, the actuator of the limit switch LSW also serves as a movable arm 30 that pivotally supports the tension pulley 28.

As shown in FIG. 6, the motors Ml and M2 are controlled by a controller 33 such as a various sequencer (programmable controller, etc.) or a microcomputer, such as a release start command 32 or an on/off control of a limit switch LSW.
II based on words etc.? The control method by this controller 33 will be specifically explained below.

As shown in FIG. 7, on the surface of the raw roll 40, there are
A detection target mark 34 is pasted in advance at a position a certain distance away from the free end of. As shown in FIG. 8, the original fabric roll 4 is transferred between the pair of belt conveyors 9A and 9B of the original fabric support part 3 in a direction in which the used material 4a can be pulled out from the bottom of the original fabric roll 4 by the belt conveyor 9B. do. At the time of this transfer,
As explained above, since the raw material roll 4 is transferred on the fallen belt conveyor 9A, there is a possibility that the edge of the old material 4a may be disturbed. Therefore, after transferring the raw fabric roll 4, the conveyor belts 9A and 9B are driven in reverse for a certain period of time.
The raw fabric roll 4 is rotated in the direction of winding up the old body. However, after a certain period of time has elapsed, when the reflective photoelectric switch 35 disposed below between the two heald conveyors 9A and 9B detects the mark 34 on the surface of the original fabric roll, the two heald conveyors 9A and 9B are
Stop the reverse drive of 9B. At this time, the raw roll 4
The affixing position of the detection target mark 34 is determined so that the free end of the old body 4a is located at a suitable distance above the position facing the unraveling roller 13 in the unraveling device 10 as shown in the figure. ing.

When the transfer of the fabric roll 4 to the fabric support section 3 and the positioning of the end of the heavy body are completed as described above, the unraveling start command 32 is given to the controller 33. The controller 33 is programmed to perform the control shown in the flowchart of FIG. 9 in response to the release start command 32.

That is, the motor Ml is driven to rotate the unraveling roller 13 in a predetermined direction, and the motor M2 is also driven to rotate the gear wheels 24a and 24b in the forward and downward direction of the movable table via the drive shaft 22. Driven. Fixed check 223a
, 23b, the movable base 12 advances and descends along the guide rail 11, and the rotation of the drive shaft 220 causes the imposed coil spring 25 to be wound up.

As shown in FIG. 5, the unraveling roller 13 is connected to the raw roll 4
When a braking force is applied to the unraveling roller 13 by contacting the surface of the unwinding roller 13, the movable arm 30 that pivotally supports the tension pulley 28 is moved in the direction of the arrow 31 by the tension of the timing belt 19, as described above. Limit switch LSW turns on. This limit switch LS
Motor M2 stops due to the ON operation of W, and drive shaft 2
2 is switched to the free state, the drive shaft 22 and both gear wheels 24a and 24b are rotationally driven in the opposite direction (movable base backward and upward direction) by the biasing force of the torsion coil spring 25.

Therefore, the movable base 12 is switched from forward and downward movement to backward and upward movement. As a result, the unraveling roller 13 separates from the surface of the web roll 4 again and returns to the unloaded state, so that the movable arm 30 that pivotally supports the tension pulley 28 is biased by the arrow 29 as described above. The timing belt 19 is tensioned by the movement in the direction, and the limit switch LSW is turned off. This limit switch LSW
Due to the off operation, the gear 24a is turned off again by the motor M2.
, 24b are driven in the forward and downward direction of the movable base 12.
is forced to move forward and downward.

By repeating the above action, the unraveling roller 13 first comes into contact with the surface of the material roll 4, and then the movable base 12 repeats a backward upward movement and a forward downward movement with a small stroke. The unraveling roller 13, which is rotationally driven, comes into contact with the surface of the raw fabric roll 4 intermittently. As a result of the intermittent contact action of the unrolling roller 13 against the surface of the web roll 4, the free end of the heavy body 4a wrapped around the surface of the unrolling roll 40, as shown by broken lines in FIG. It is intermittently subjected to the rotational force of the roller 13 and is pushed downward, and is finally peeled downward from the position facing the unraveling roller 13 and transferred onto the belt conveyor 9B. That is, the dissolution action is completed.

The time for reciprocating the movable base 12 with a small stroke is preset in the controller 33 to be slightly longer than the longest predicted time until the dissolution action is completed. However, once this set time has elapsed, the motor M
At the same time as stopping the driving of the unraveling roller 13 by 1,
The movable base 12 is moved backward to the upper limit position. The backward movement of the movable base 12 to the upper limit position can be performed only by the biasing force of the wound torsional recoil spring 25, but the motor M2 can be reversely driven to move the drive shaft 22 and the gear wheels 24a, 24b. is forcibly reversed, and the movable base 12
It is also possible to forcibly move it backwards to the upper limit position.

Note that the method of reciprocating the movable table 12 with small strokes and bringing the unraveling roller 13 into contact with the surface of the raw roll intermittently a plurality of times is not limited to the method of the above embodiment. The gear wheels 24a and 24b may be repeatedly driven in forward and reverse directions by the motor M2 without using the recoil spring 25.Also, when the unraveling roller 13 comes into contact with the surface of the material roll 4, the It is also possible to provide a sensor that detects the surface of the movable base 12 with or without contact, and to switch the movable base 12 to backward or upward movement based on a detection signal from this sensor. However, when configured as in the above embodiment, it is easy to press the unraveling roller 1.3 strongly and reliably against the surface of the web roll 4 and then switch to the backward and upward movement.

Furthermore, in the above embodiment, the movable base 12 that reciprocates linearly
Although we used a movable table that swings around a support shaft, it is also possible to use a movable table.

(Effects of the Invention) As described above, according to the unraveling device of the present invention, as long as the original fabric roll is transferred to the original fabric support part in a predetermined state, the original fabric roll can be removed without any manual effort. It is possible to reliably extract the tangible edge from the material, thereby increasing the efficiency and streamlining of the dismantling work.

In particular, with the device of the present invention, it is possible to use a small and lightweight motor with low torque as the motor that drives the unraveling roller, and even when the material is used for materials such as piled fabrics, which have high friction between heavy weight sections. , it is possible to reliably pull out the solid end within a relatively short period of time, and there is almost no risk of unraveling failure.

[Brief explanation of the drawing]

Figure 1 is a schematic side view explaining the overall configuration of the spreading machine;
The figure is a cross-sectional plan view showing the main parts of the unraveling device of the present invention, FIG. 3 is a longitudinal front view of the same, FIG. 4 is a longitudinal side view of the same, and FIG. 6 is a block diagram explaining the motor control system, FIG. 7 is a perspective view showing one end of the raw roll, FIG. 8 is a side view explaining the reaction action, and FIG. 9 is a flowchart illustrating a control procedure. 3... Original fabric support part, 4... Original fabric roll, 4a...
Entity, 9A, 9B... Belt conveyor, 10... Unraveling device, 11... Guide rail, 12... Movable platform,
13... Unraveling roller, 16.22... Drive shaft,
19... Timing heald, 20... Movable platform driving means, 23a. 23b...fixed chino, 24a, 24b...gear ring,
25... Torsional recoil spring, 27... Guide wheel, 28... Tension pulley, 30...
Movable arm, 33...controller, Ml, M2.
...Motor, LSW...Limit switch.烙 3 fig. 6 fig. 7 d

Claims (1)

[Claims] A movable table movable in a direction near and far with respect to the unraveling side surface of a material roll supported horizontally on a material support part of a spreading machine, a drive means for reciprocating the movable table, and a movable table pivotally supported on the movable table. A drivable unraveling roller and a controller for controlling the movable table driving means, the controller comprising:
After the movable base is moved forward and the unraveling roller comes into contact with the surface of the raw roll in a rotating state, the movable base is reciprocated in small strokes so that the unraveling roller touches the surface of the raw roll multiple times. A unraveling device in a spreading machine configured to make intermittent contact.