JPH0426462A - Indefinite thickness cloth supply device - Google Patents

Abstract

PURPOSE:To secure the stable supply, and also, to remarkably simplify the structure by drawing out downward one piece of the lowest layer of superposed indefinite thickness cloth by turning a transfer-out roller and forming a sag part in about the center thereof, and taking it out by one piece each by drawing it downward by its sag part and a take-out means. CONSTITUTION:Cuff cloth l00n of the lowest layer is drawn out and hung down to the center side by needle-like projections 83, 83', respectively, and a sag part D is formed. In this regard, since rotation angles of transfer-out rollers 8, 8' are <=90 degrees, respectively, it does not occur that the drawn-out cuff cloth l00n turns round in the needle-like projections in the lower part of the transfer-out rollers 8, 8' and becomes undetachable. In such a state, air is supplied to a driving cylinder 16, a piston rod 16a rushes into the sag part D, and thereafter, a piston rod 14a of a driving cylinder 14 descends. By synchronizing therewith, a piston rod 16 descends, and as for the cuff cloth 100n, its center is drawn out further downward and drops down, take-out of the cuff cloth is finished, and driving cylinders 13, 14 and 16 are reset, respectively.

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention involves stacking a large number of irregularly thick cloths of the same shape and having partially different thicknesses in a stacked manner, and taking them out one by one one by one and placing them in a predetermined manner. The present invention relates to an irregular thickness cloth supply device for supplying cloth to a position.

[Prior Art] Conventionally, there has been a variable thickness fabric feeding device for stacking a large number of fabrics of variable thickness, such as cuff fabrics whose peripheries are sewn, and taking out and feeding them one by one. The one shown in Fig. 13 is 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 50.
The stocker 50 moves the cuff cloth 1 by a lifting device (not shown).
00, the top layer cuff cloth reaches a predetermined height, and the top layer is picked up using a vacuum chuck, hook, etc. located above! After the uke was handed over to 51,
This pick-up device 51 moves to supply the cuff cloth to the next sewing machine such as a buttonhole sewing machine or a button sewing machine.

[Problems to be Solved by the Invention] However, such conventional irregular thickness cloth feeding devices have the following problems.

That is, as shown in FIG. 14, the cuff cloth 100 is generally 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 thickness of the parts 100a, 100b, and 100c where the cloth is folded back is 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, as shown in FIG. , becomes a three-dimensional curved surface whose height decreases in the order of two. This development becomes more noticeable as the number of cuff cloths piled up increases.

Therefore, even if the pick-up device 51 tries to take out the top layer of cufflink fabric, 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, which may often result in malfunction. Ta.

Further, there is a problem that raising and lowering the stocker 50 in which a large number of cufflink cloths are piled up and controlling its height requires a large and complicated device, which is expensive and easy to use.

This invention was made in view of the above points, and an object of the present invention is to provide an inexpensive variable thickness fabric feeding device that can always perform a stable feeding operation regardless of the type of fabric or the number of stacked fabrics. do.

[Means for Solving the Problems] In order to achieve the above object, the present invention abuts the bottom surface of a single layer of variable thickness fabric and rotates in one direction, thereby frictionally rubbing only the bottom layer. at least one feed roller that is pulled out downward to form a slack portion approximately in the center of its longitudinal direction; The cloth is provided with a take-out means for pulling the cloth downward.

Preferably, two of the above-mentioned feeding rollers are provided at a variable interval between substantially the center of the lengthwise direction of the irregularly thick cloth.

Further, it is preferable that the feeding roller has a large number of needle-like protrusions formed on its outer circumferential surface, the tips of which are bent in the direction of rotation, and the rotation range thereof should not exceed 90 degrees.

[Function] With the structure described above, a slack portion is formed in the bottom layer of the cloth of irregular thickness due to the rotation of the feed roller, and the slack portion can be easily pulled downward by the take-out means. It is possible to take out and supply one sheet at a time.

At this time, regardless of the shape of the upper layer of the constant thickness layered cloth, the lowermost layer is always kept flat in a fixed position, so that stable supply is possible.

Also, like the conventional device that was taken out from the top layer, 1
There is no need for an elevating means for elevating and lowering a large and heavy stocker containing stacked fabrics of variable thickness, a control means for controlling its height, etc., and the configuration can be significantly simplified.

If two feeding rollers are provided and the interval between them is variable, a large slack can be formed near the center of the fabric of variable thickness with a slight rotation of each feeding roller, and It becomes possible to adjust the interval between the feeding rollers according to the strength of the user's stiffness.

Furthermore, if a large number of needle-like protrusions are formed on the outer peripheral surface of the feed roller, the tips of which are bent toward the rotating direction, these needle-like protrusions will increase the friction with the variable thickness fabric when the feed roller rotates. Along with eliminating slippage between the two.

There is no risk of resistance when being pulled out. In addition, if the rotation range of the feed roller does not exceed 90 degrees, the slack portion of the undefined thickness material that is pulled out downwards may wrap around the lower half of the feed roller and become stuck to the needle-shaped protrusion, making it impossible to remove it. Nor.

[Example] Hereinafter, the present invention will be described in detail with reference to FIGS. 1WI to 8 of the accompanying drawings.

FIG. 1 is a partially cutaway perspective view of an embodiment of the present invention, and FIG. 2 is a perspective view showing a state in which cuff cloths are piled up.

In order to simplify the explanation, in the following explanation, members provided symmetrically are indicated by the same reference numerals with a dash attached to the other, and each member will only be explained one way, and the explanation of the other will be omitted.

In FIG. 1, a pair of brackets 2 are installed on the top of the frame 1.
．． A pair of guide plates 3, 3' are connected to elongated holes 3a, 3 through 2'.
a' and mounting screws 4.4', the cuff cloths are erected so that the distance between them can be adjusted according to the size of the cuff cloths to be piled up. A roller mounting plate 5.5' having a U-shaped cross section is attached to the bent portions 2a, 2a' of the bracket 2.2', and the long holes 5b, 5b' provided in the vertical portions 5a, 5a' of the roller mounting plate 5.5' and the mounting screws 6 are provided. .6' is fixed so that the interval can be adjusted.

The horizontal portions 2b, 2b' of the bracket 2.2' and the horizontal portions 5c, 5c' of the roast sake mounting plate 5.5' constitute a mounting table for the cuff cloths to be stacked. Roller fastening plate 5
, 51, roller shafts 7.7' are rotatably supported between the vertical bunds 5a, 5a, 5a', 5a', and feed rollers 8, 8' are integrally attached to the roller shafts 7.7'. The notch portion 5d is fixed to the horizontal portion 5C15c′ with each solid peripheral surface provided on the horizontal portion 5C15c′.
, 5d' are inserted through and slightly protrude from the upper part thereof, so that the protruding parts are located on both sides of the lowermost layer of the stacked cuff cloths, sandwiching the substantially center thereof.

The base of the arm 9, 9' is fixed to one end of the roller shaft 7, 7', and the connecting pin 10, 10' is connected to the tip of the arm 9, 9'.
Plant in the opposite direction to 7'. This connecting pin 10.10
' is the horizontal long hole 11a provided in the drive plate 11,
11a', a drive cylinder 13 is erected on a cylinder mounting plate 12 that is integral with the frame 1, and the tip of the piston rod 13a is fixed to the drive plate 11. By driving the driving plate 11 downward by the driving cylinder 13, the connecting pin 10.10' is driven downward, and the feeding roller 8.8 is driven through the arms 9, 9' and the roller shaft 7.7'. ' can be rotated in the directions of arrows B and B' within a range that does not exceed 90 degrees.

At this time, as can be seen from FIG. 1, a pair of feeding rollers 8,
8' are adapted to rotate in opposite directions.

On the other hand, a drive cylinder 14 is fixed to the lower center of the frame 1, and a drive cylinder 16 is fixed to the tip of the piston rod 14a via an L-shaped angle fitting 15. The pair of feed rollers 8.8' can be protruded below the intermediate portion thereof, and constitute a means for taking out the cuff cloth.

Here, the structure of the feeding roller 8 will be explained with reference to FIG.

This feeding roller 8 is constructed by attaching an elastic plate 84 such as a rubber plate having a large number of needle-like protrusions 83 with bent tips on the outer periphery of a roller 82 having a plurality of screw holes 81 for attachment.
The direction in which the elastic plate 84 is attached is determined so that the bent end portion of the needle-like protrusion 83 faces in the direction of rotation of the delivery roller 8.

Note that the structure of the feeding roller 8' is also similar.

For example, as shown in FIG. 4, the irregular thickness fabric supplying device 20 configured as described above is connected to a hole-up stitch sewing machine 31. A button sewing machine 32, a button supply device 33, a cuff cloth transport device 34, and a storage section 35 are placed on a machine base 36 to constitute an automatic sewing device 30, and each sewing operation is performed by dipping by operating an operation panel 37. is done automatically.

Next, the operation of the embodiment having such a configuration will be explained.

First, set the mounting screw 4 according to the length of the cuff cloth to be sewn.
4' to adjust the distance between the guide plates 3.3', and depending on the stiffness of the cuff cloth, loosen the mounting screws 6.6' and move the roller mounting plate 5.5' to set the feeding roller 8. , 8' is adjusted, the cuff cloth 100 is stacked between the guide plates 3 and 3' to form the state shown in the second diagram.

In this state, the lower surface of the lowermost cuff cloth 100n is in contact with the needle-like protrusion 83.83' of the feeding roller 8.8', and the piston rod 13a of the drive cylinder 13.16
, 16a are in a retracted state, and the piston rod 14a of the drive cylinder 14 is in an extended state.

In this state, when the device is started by operating the operation panel 37 shown in FIG. Descend in the direction of arrow A.

When the drive plate 11 is lowered, the side walls of the long holes 11a, 11a' drive the connecting pins 10.10' downward, and the feed rollers 8,
8' is indicated by arrow B in FIG.

Rotate by a predetermined angle within 90 degrees in direction B'.

As a result, as shown in FIG.
00n is pulled out toward the center by the needle-like protrusions 83 and 83' and droops from the state shown by the imaginary line to the state shown by the solid line, and a slack portion is formed, resulting in the state shown in FIG. Note that since the rotation angles of the feeding rollers 8.8' are each within 90 degrees, the drawn cuff cloth 100n wraps around the needle-like protrusion in the lower half of the feeding roller 8.8' and cannot be removed. Never.

Here, air is supplied to the drive cylinder 16, and after the piston rod 16a plunges into the slack portion as shown by the solid line in FIG.
a descends. Simultaneously, the piston rod 16a descends to the state shown by the imaginary line in the figure, and the cuff cloth 100n
The center thereof is further pulled out and falls as shown in FIG. 8, and the removal of the cuff cloth is completed, and the drive cylinders 13, 14, and 16 each return to the state shown in FIG. 2.

At this time, since the needle-like protrusions 83.83' of the feeding roller 8.8' are all bent in the direction of rotation, the cuff cloth 100n slides on the needle-like protrusions 83.83' and is pulled out. There will be no resistance whatsoever.

The cuff cloths that have fallen in this way are fed one by one to the sewing position by the cuff cloth conveying device 34 shown in FIG. The buttons supplied from the button feeder via the spring feeder by the supply device 33 are sewn by the button sewing machine 32 and stored in the storage section 35 .

In addition, in the above embodiment, a case was explained in which two feeding rollers were provided to take out the cuff cloth from below.
There is no problem with either one of these.

Also, a drive cylinder 1 that rotates the feed roller 8.8''
3 and the driving cylinders 14 and 16 for pulling the slack portion of the irregularly thick cloth downward and taking it out are not limited to air cylinders.

In the above embodiment, the lowermost layer cuff cloth 100n is pulled down by the piston rod 16a of the drive cylinder 16, but in this case, as shown in FIG. In this case, even if the drive cylinder 16 is pulled down by the cylinder 14,
Since there is no catch, the lowermost cuff cloth 100n may not come off the drive roller 8.

Referring to FIGS. 10 and 11, in another embodiment of the present invention, 1 is a frame body, 3.3' is a guide plate, and 5.5'
is the roller mounting plate, 6.6' is the mounting screw, 7.7' is the roller shaft, 8.8' is the feeding roller, 11 is the drive plate, 12 is the cylinder mounting plate, 13 is the drive cylinder, 20 is the irregular thickness cloth It is a supply device.

Since these configurations are the same as those of the above embodiments, their explanations will be omitted, but in this embodiment, a cuff clipping cylinder 61 is attached to a cylinder mounting plate 63 attached to a cylinder block 62 through a base 60. A disc-shaped cuff clip plate 64 is attached to the tip of the piston lock 1a of the piston 61. Further, a slide rail 66 is fixed to a rail mounting plate 65 that is fixed upright to the rear of the base 60, and a slide 66 is fixed to this slide rail 66.
7 is installed. Further, a clamp shaft bracket 68 is fixed to the slide 67, a joint block 69 is fixed to the upper part of the clamp shaft bracket 68, and a knuckle joint 70 is connected to the joint block 69 by a joint pin 71. In addition, the piston door 2a of the cuff drawer cylinder 72 is attached to the knuckle joint 70.
Further, the cuff drawer cylinder 72 is attached to the rail mounting plate 65 via a support 73. Further, a pinch shaft driving cylinder 74 is fixed to the rail mounting plate 65, a pinch shaft connecting plate 75 is fixed to the piston door 4a of the pinch shaft driving cylinder 74, and a cuff clip is attached to the pinch shaft connecting plate 75. One end of the shaft 76 is connected. Further, the cuff clipping shaft 76 passes through a clipping shaft guide 77 fixed to the clipping shaft bracket 68, and projects from the hole of the clipping shaft bracket 68 toward the cuff clipping plate 64 side.

In this embodiment configured in this way, the feeding roller 8.8
When a slack portion is provided in the lowermost cuff cloth 100n due to the rotation of ``, the cuff clipping shaft 76 is protruded from the slack portion, and the cuff clipping cylinder 61 is driven to raise the piston rod 61a. As shown in FIG. 12, the cuff cloth 100n is held between the cuff pinching plate 64 and the cuff pinching shaft 74 provided at the tip of the piston rod 61a. Then, the cuff clamp cylinder 61 and the cuff pull-out cylinder 72 are driven synchronously, and the clamp shaft bracket 6
8 and the cuff clipping plate 64, the cuff cloth 100n is pulled down while being held between the cuff clipping shaft 74 and the cuff clipping plate 64, and even if the cuff cloth 100n comes off from either the feeding roll 8 or 8', it cannot be pulled out. I can do it.

[Effects of the Invention] As described above, according to the present invention, the lowermost layer of the stacked fabrics of variable thickness is pulled out downward by the rotation of the feed roller, and a slack portion is formed approximately in the center of the layer. The slack portion is pulled downward by the removal means and taken out one by one, so regardless of the shape of the upper layer of the undefined thickness cloth stacked in one layer, the bottom layer can always be taken out from the bottom layer, which is kept flat in a fixed position. This makes it possible to ensure a stable supply, and also to significantly simplify the structure, making it possible to make it compact and supply it at low cost.

If the above device is equipped with two feeding rollers and the interval between them is variable, a large slack can be formed near the center of the fabric of irregular thickness with a slight rotation of each feeding roller. , the interval between the feeding rollers can be freely adjusted depending on the stiffness of the irregularly thick fabric.

Furthermore, by forming a large number of needle-like protrusions on the outer circumferential surface of the feeding roller, the tips of which are bent in the direction of rotation, it is possible to prevent the feeding roller from slipping between the fabric of irregular thickness and to form a slack portion. At the same time, there is no fear that the needle-like protrusions will act as resistance when being pulled out.

In addition, if the rotation range of the feed roller does not exceed 90 degrees, the slack portion of the undefined thickness material that is pulled downward will wrap around the lower half of the feed roller, making it difficult to take out the needle-shaped protrusions. There is no risk of interfering with this.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an embodiment of the present invention, FIG. 2 is a perspective view showing the cuffs stacked together, and FIG. 3 is an exploded perspective view showing the structure of the feeding roller. FIG. 5 is a perspective view showing the overall structure of an automatic sewing device equipped with an irregular thickness cloth supplying device according to the invention, and FIG. 5 is an explanatory diagram showing the relationship between the feeding roller and the irregular thickness cloth. 6 to 8 are perspective views showing different operating states of the irregular thickness cloth feeding device according to the present invention, FIG. 9 is a diagram for explaining the drawbacks of the embodiment shown in FIGS. 1 to 8, 10
11 and 11 are perspective views of an irregular thickness cloth supplying device according to another embodiment of the present invention, FIG. 12 is a diagram for explaining the effect of the embodiment of FIGS. 10 and 11, and FIG. 13 is a conventional FIG. 14 is a perspective view illustrating only the main parts of the irregular thickness cloth supplying device. FIG. 14 is a perspective view showing an example of the irregular thickness cloth. 1... Frame, 2.2''... Bracket, 3.3'.
...Guide plate, 5.5''...Roller mounting plate, 8.8'
...Feeding roller, 11..., drive plate, 13.14.
16... Drive cylinder, 20... Indeterminate thickness cloth supply device, 30... Automatic sewing device, 31... Hole loose stitch sewing machine. 32...Button sewing machine, 34...Cufflink conveyance device. 83...Acicular projection, 84...Elastic plate, 100...
Cuff cloth (indeterminate thickness cloth), 100n...lowest layer cuff cloth.

Claims (1)

[Claims] 1. By abutting against the bottom surface of the stacked fabrics of variable thickness and rotating in one direction, only one layer of the bottom layer is pulled downward by friction, and a slack portion is created at approximately the center in the longitudinal direction. and a take-out means for pulling out the lowermost layer of variable thickness fabric downward by protruding into the slack portion formed by the feed roller and descending. Features: Indeterminate thickness fabric supply device. 2. The variable thickness fabric supplying device according to claim 1, wherein the two feeding rollers are provided at variable intervals, sandwiching substantially the center of the variable thickness fabric in the length direction. 3. Claim 1 or 2, wherein the feeding roller has a number of needle-like protrusions formed on its outer circumferential surface, the tip of which is bent in the direction of rotation.
The variable thickness fabric feeding device described. 4. The irregular thickness cloth feeding device according to claim 3, wherein the feeding roller is configured to rotate within a range not exceeding 90 degrees. 5. The irregular thickness cloth supplying device according to claim 1, wherein the taking-out means is provided with a pinching shaft and a pinching plate.