JPH047224A - Cloth supplier - Google Patents

Abstract

PURPOSE:To enable extremely stable supply with no relation to a shape in an upper layer part by providing a cloth separating means which separates a cloth in an upper layer side from a cloth in the lowermost layer by inserting a rod into a loop part to lift the cloth. CONSTITUTION:A single sheet in the lowermost layer of a cloth, piled and stored by a cloth storage means 10, is adsorptively held in the upstream side of a feed direction by a cloth attracting part 16, and when a feed roller 24 is rotated press-attached to a lower surface in the downstream side of the cloth, a non-sucked side is pulled by a relation between a protrusion part of the feed roller 24 and the cloth to form a loop part L below. Under this condi tion, rotation of the feed roller 24 is once stopped, and when a rod 35a of a cloth separating means 30 is inserted into the loop part to lift the cloth, a cloth 100n in the lowermost layer is easily fed out by lifting a cloth 100m upper than the second sheet from the lowermost layer cloth 100n. Here the lowermost layer cloth 100n is further pulled by again rotating the feed roller 24, and when an end part of the cloth is detached from the feed roller 24, the lowermost layer cloth 100n, whose point end side is naturally suspended, is dropped.

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention involves stacking a large number of cloths of the same shape in the same direction,
The present invention relates to a cloth feeding device that sequentially takes out cloth sheets one by one and supplies them to a predetermined position.

[Conventional technology]

For example, as a cloth feeding device for stacking a large number of cloths with uneven thickness, such as cuff cloths with sewn edges, and taking out and feeding them one by one, there is a conventional cloth feeding device as shown in Fig. 9. Are known.

To explain this simply, a large number of cufflink cloths 100 of the same shape are piled up in the same direction inside a box-shaped stocker 5°,
The stocker 50 moves the cuff cloth 1 by a lifting device (not shown).
00, and the top layer of cufflink cloth that has reached a predetermined height is passed to a known pickup device 51 using a vacuum chuck, hooking claw, etc. located above.
This pick-up device 51 moves to supply the cuff cloth to the next sewing process such as a buttonhole sewing machine or a button sewing machine.

[Problem to be solved by the invention]

However, such conventional cloth feeding devices have the following problems.

That is, generally, as shown in FIG. 10, the cuff cloth 100 is made by overlapping a cuff outer cloth 102 and a lining cloth 103 on both sides of an interlining 101, and folding back three sides of the periphery to form an edge stitched part 104. Therefore, the part 100a where the cloth is folded back.

100b and 100c are thicker.

Therefore, when a large number of cufflink cloths 100 of the same shape are stacked in the same direction and stored in the stocker 50, the height of point A on the uppermost layer of cloth is at most one point, as shown in FIG. , becomes a three-dimensional curved surface whose height decreases in the order of two. This phenomenon becomes more pronounced as the number of stacked cuff cloths increases.

Therefore, even if an attempt is made to take out the top layer of cufflink fabric using the pink-up device 51, the top surface is not horizontal and the shape of the surface changes greatly depending on the type of cufflink fabric and the number of stacked cufflink fabrics, making the shape and structure of the pickup device complicated. Not only this, but there is also a risk that malfunctions may occur, such as failure to take out or taking out two or more sheets.

Another problem is that a large and complicated device is required to raise and lower the stocker 50 in which a large number of cufflink cloths are piled up and to control its height, resulting in an increase in cost.

The present invention has been made in view of the above points, and it is an object of the present invention to provide a cloth feeding device at a low cost that can always perform a stable feeding operation regardless of the type of cloth or the number of stacked cloths.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a fabric storage unit that can store fabrics in piles, has an opening at least in the middle of the bottom, and has a fabric suction part upstream of the opening in the fabric feeding direction. By rotating a means and a feed roller disposed vertically displaceably in the opening of the cloth storing means in the raised position, the cloth is brought into pressure contact with the lower surface of the lowest layer of cloth, and its non-adsorbing side is pulled downward. After forming a loop part, the cloth is allowed to fall down naturally by its own weight, and is rotated at the lowered position to press against and send out the hanging upper surface of the cloth, and a rod is inserted into the loop part and lifted to lower the upper layer side. A cloth separation means for separating the cloth from the bottom layer cloth is provided.

The cloth feeding means includes a feeding roller, a motor for rotationally driving the feeding roller, and a drive actuator for displacing these in the vertical direction.

Preferably, the cloth separating means includes a horizontal air cylinder having a rod that can be inserted into and removed from the loop portion, and a vertical air cylinder that drives the horizontal air cylinder up and down.

[For production]

According to the above configuration, the bottom layer of the cloth stored in the stack in the cloth storage means is held by suction on the upstream side in the feeding direction by the cloth suction section, and the feed roller is attached to the lower surface on the downstream side. When the cloth is crimped and rotated, the non-adsorbing side is pulled together due to the interaction between the protrusion of the feed roller and the cloth, forming a loop portion below.

In this state, when the rotation of the feed roller is temporarily stopped and the rod is inserted into the loop and lifted, the fabric above the second layer from the bottom layer is lifted, making it easier to feed the bottom layer of fabric. . Here, when the feed roller is rotated again and the bottom layer of cloth is further brought together so that its end portion is separated from the feed roller, the leading end side of the bottom layer of cloth naturally hangs down and falls.

Next, when the monitor is kept rotating and lowered, and at the same time the suction of the cloth suction section is released, the feed roller comes into pressure contact with the top surface of the drooping cloth, and the bottom layer of cloth is completely pulled out and sent to the next process section. It will be done.

The cloth feeding means is composed of a feeding roller, its motor, and a rocking actuator that moves these up and down, and the cloth separating means is arranged horizontally.

If the cylinder is composed of two vertical cylinders, the above-mentioned complicated operation can be reliably performed with an extremely simple and inexpensive structure.

〔Example〕

Hereinafter, an embodiment in which the present invention is applied to a cuff cloth supply device will be described with reference to FIGS. 1 to 8 of the accompanying drawings.

FIG. 1 is a partially cutaway perspective view of an embodiment of the present invention.

A cloth storage section 10 for storing a large number of cufflink cloths 100 shown in FIG. Rear guide bottom plate 13, these front and rear guide bottom plates 12.13
A large number of suction ports are provided on the upper surfaces of the front guide frame 14, the rear guide frame 15, and the rear guide bottom plate 13, which are disposed upright and have a U-shaped cross section, in contact with the front edges, that is, on the upstream side in the cloth feeding direction A. The cloth suction part 16 is connected to the pipe line 17.
is connected to an ejector that generates negative pressure from an air source (not shown), so that the lowest layer of cuff cloth stored in the cloth storage section 10 can be adsorbed.

A drive actuator 21 is fixed on the main board 11, one end of the drive plate 22 is fixed to its rotation shaft 21a, a motor 23 is fixed to the other end, and a feed roller 2 is fixed to the rotation shaft 23a.
4 are fixedly installed to constitute the cloth feeding section 20. By reciprocating the rotating shaft 21a by a predetermined angle, the friction roller 24 is moved to a position where it can press against the lower surface of the lowest layer of cuff cloth 100n stacked as shown in FIG. It is possible to move up and down between a position close to the substrate 11 and a position close to the substrate 11.

The feed roller 24 is a core roller with clothing wrapped around it, and its needles are made of metal or synthetic resin, and are curved in the direction of rotation B as shown in FIG. It ensures the feeding power of the cloth and also takes care not to damage the cloth.

Further, a pedestal 31 is fixedly installed on the main board 11, and this pedestal 31
A vertical air cylinder 32 provided inside reguides the shaft 33.
33, the elevating plate 34 can be moved up and down instantly. A horizontal cylinder 35 is fixed to this elevating plate 34, and its rod 35a is projected to an intermediate portion between the cloth suction section 16 and the feed roller 24, and is moved up and down at that position, thereby constructing the cloth separation section 30.

Furthermore, the horizontal air cylinder 35 and the vertical air cylinder 32 that raises and lowers the horizontal air cylinder 35 are provided with sensors 41, 42, and 43, 44 for detecting their respective operating states, and sensors 41, 42, and 43, 44 are provided below the rear guide bottom plate 13 and on the main board 11. Cloth detection sensors 45 and 46 are provided at the bottom to detect the state of the pulled cloth. Although not shown in FIG. 1, in the case 47 shown in FIG. 3, the drive actuator 21 is
This is a sensor that detects rotation in the direction of arrow C in the figure.

Further, numeral 50 in FIG. 1 is a cloth conveying section that conveys the fed cuff cloth 100 in the direction of arrow A.

FIG. 2 is a circuit diagram showing the air circuit of the above embodiment, in which air from the air source 1 is supplied to the solenoid valves Vl, V2°, V3. The aforementioned ejector 2. Vertical air cylinder 32. Horizontal air cylinder 35. The negative pressure generated by the ejector 2 is supplied to the winding actuator 21, and the negative pressure generated by the ejector 2 is
Let it lead you to 6.

Further, FIG. 3 is a block diagram showing the configuration of the control device of this embodiment, in which the above-mentioned sensors 41 to 47 and a start signal are input to a controller 3 consisting of a microcomputer, and a driver D1 is
-D4 to control the electromagnetic valves V1 to V4, and also control the rotation of the motor 23 via a driver D23.

Next, the operation of this embodiment constructed as described above will be explained using FIG. 1 and FIGS. 5 to 8 while referring to the flowchart shown in FIG. 4.

In the initial state, the drive actuator 21 is in a state where the drive plate 22 is rotated in the direction of arrow C, and the motor 23 and the feed roller 24 are held at the uppermost position. When a plurality of cuff cloths 100 are stacked and stored in the cloth storage section 10 in this state, the lower surface of the lowest layer cloth 100n comes into pressure contact with the feed roller 24 as shown in FIG.

Here, a start switch (not shown) is pressed to input a start signal to the controller 3 shown in FIG. , and when it is confirmed that the sensor 47 that detects that the rocking actuator 21 is rotating in the direction of arrow C is turned on, negative pressure is supplied to the cloth suction unit 16 to remove the bottom layer of cloth 100n.
At the same time, the motor 23 is started to rotate the feed roller 24 in the direction of arrow B in FIG.

Due to the rotation of the feed roller 24, the non-adsorbing side of the lowermost layer of cloth 100n is pulled to the left in FIG.
A hanging loop L is formed between the fabric 100 and
The right end of n comes off from the front bottom plate 12. When the fabric detection sensor 4S detects the formation of a loop portion, the rotation of the motor 23 is stopped and the horizontal air cylinder 35 is advanced to remove the rod 3.
5a into the loop section.

When the sensor 41 detects the end of the forward movement of the rod 35a, the vertical air cylinder 32 is advanced to raise the horizontal air cylinder 35 on the elevating plate 34 a predetermined distance, and the fabric 100 except the bottom layer is lifted up and the two fabrics from the bottom layer are lifted. The cloth 100m is kept in a state where it does not come into contact with the bottom layer cloth 100n and the feed roller 24. Here, when the sensor 43 detects the rising end of the vertical air cylinder 32, the motor 23 is rotated again.

As a result, the right half of the lowermost layer of cloth 100n is picked up by the feed roller 24 and moves further to the left, and when the right end portion is separated from the feed roller 24, the feed roller 24 is moved by its own weight.
While sliding on the outer peripheral surface of the main board 11, it falls naturally onto the main board 11, resulting in the state shown in FIG. At this time, since the needle of the feed roller 24 is bent in the sliding direction of the cloth 100n,
There is no risk of interfering with the sliding movement.

During the series of operations described above, the cloth suction section 16 always suctions and holds the left half of the bottom layer cloth 100n using negative pressure.

When the cloth detection sensor 46 detects that the cloth 100n has fallen, the rocking actuator 21 is rotated in the direction of arrow D (FIG. 1) to lower the feed roller 24, and as shown in FIG. Bringing the roller 24 into pressure contact with the upper surface of the cloth 100n, and stopping the supply of negative pressure from the cloth suction unit 16,
The cloth 100n is sent to the cloth conveyance section 50 shown in FIG. 1 and conveyed to the next process section.

When the sensor 46 detects that the cloth 100n has been fed out, the motor 23 is stopped, the vertical air cylinder 32 and the horizontal air cylinder 35 are moved backward, and the rocking actuator 21 is rotated in the direction of arrow C (FIG. 1). let

Here, when the cloth detecting means (not shown) detects that the cloth stored in the cloth storage section 10 remains, the above-described process is repeated, and when all the stacked cloths are sent out, this process ends.

In the above embodiments, the present invention is applied to a cuff cloth supply device, but the present invention is not limited to cuff cloth, and can be similarly applied to any other parts. Further, the rocking actuator 21 is not limited to an air motor, but may be an electromagnetic actuator (for example, a rotary lenoid) or the like.

〔Effect of the invention〕

As described above, according to the present invention, since the stacked cloth is separated and sent out one by one from the bottom layer at a fixed position, extremely stable supply is possible regardless of the shape of the upper layer. This eliminates the need for a large, heavy stocker lifting device and troublesome height control as in the conventional example.

In addition, the bottom layer of cloth is fed out while being pulled downward in cooperation with the cloth separation means by the rotation of the feed roller, which moves up and down while being sucked by the cloth suction unit, so that the cloth can be adjusted in thickness and thickness without being damaged. Regardless of the strength of your hips, you can reliably send it out in a natural manner.

Furthermore, even if the number of stacked cloths decreases,
Since the lowermost layer of cloth is suctioned and held downward by the cloth suction section, sufficient pressure contact force with the feed roller is ensured, which compensates for the lack of pressure contact force due to its own weight and enables highly reliable feeding.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing an embodiment of the present invention, FIG. 2 is a circuit diagram showing its air circuit, FIG. 3 is a block diagram showing its control device, and FIG. 4 is a flow diagram showing its operation. 5 to 8 are explanatory diagrams showing each operating state, and FIG.
The figure is a front view showing only the main parts of a conventional cloth supply device, and FIG. 10 is a perspective view showing an example of stacked cloth. 1... Air source 3... Controller 1o
...Cloth storage section 16...Cloth suction section 20...
Cloth feeding section 21...Ringing actuator 23...Motor 24...Feeding roller 3
0...Cloth separation section 32...Vertical air cylinder 3
5...Horizontal air cylinders 41 to 44, 47...Sensors 45, 46...Cloth detection sensor Fig. 3 Fig. 4 Fig. 9 Fig. O Fig.

Claims (1)

[Scope of Claims] 1. A cloth storage means capable of storing cloth in a stacked manner, having an opening at least in the middle of the bottom, and having a cloth suction section upstream of the opening in the cloth feeding direction; A feed roller disposed in the opening of the storage means so as to be vertically displaceable is rotated in a raised position to press against the lower surface of the bottom layer of cloth and bring its non-adsorbing side together to form a loop portion below. The fabric is then allowed to fall down naturally due to its own weight, and is rotated at the lowered position to press against the top surface of the hanging fabric and feed it out.A rod is inserted into the loop portion and lifted up to move the upper layer of fabric to the bottom layer. 1. A cloth supply device comprising a cloth separating means for separating the cloth from the cloth. 2. The cloth feeding device according to claim 1, wherein the cloth feeding means comprises a feeding roller, a motor that rotationally drives the feeding roller, and a swing actuator that displaces these in the vertical direction. 3. The cloth feeding device according to claim 1 or 2, wherein the cloth separating means comprises a horizontal air cylinder having a rod that can be inserted into and removed from the loop portion, and a vertical air cylinder that drives the horizontal air cylinder up and down.