JPH0227256B2 - PITSUKUATSUPUSOCHI - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a pick-up device for picking up fabric one by one in an automatic sewing machine or the like.

BACKGROUND ART In automatic sewing machines and the like, there have conventionally been devices for picking up fabric by sucking the fabric using suction air.

Problems to be Solved by the Invention However, with the above-mentioned conventional method, reliable operation could not be expected, as multiple pieces of fabric were pulled up together, or the suction came off during lifting.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems and to provide a pick-up device which can correctly pick up one piece of fabric and also reliably pull it up.

Means for Solving the Problems In order to achieve the above object, the configuration of the present invention is as follows. That is, a box-shaped main body, a head portion fixed to the upper end of the main body, a needle guide portion that is moved downward by a piston cylinder mechanism built in the main body, and a needle guide portion that is attached to the main body and that is moved downwardly by a piston cylinder mechanism built in the main body. At least two parts are obliquely retractable in opposite directions from the bottom surface of the guide part by raising and lowering the part.
a pair of hollow needles, the compressed air is sent to the hollow needle through a first air feeding capillary inserted through the main body, and a second air feeding capillary inserted through the head portion. Compressed air is supplied to the top of the piston cylinder mechanism through the piston cylinder mechanism.

Function Compressed air is sent to the hollow needle through the first air supply capillary, and the compressed air is ejected from the tip of the hollow needle. On the other hand, the pick-up device descends onto the pre-stacked cut fabrics and presses the fabrics, thereby pushing the needle guide upward. The tips of the hollow needles are exposed from the bottom surface of the needle guide, and the needles move diagonally in opposite directions along the needle holes of the needle guide and pierce the fabric. Even if the second layer fabric is stuck to the top layer fabric, the compressed air is blown between the two fabrics, so that the second layer fabric can be reliably pulled off. The top layer fabric is hooked onto the hollow needles and does not come off the needles. After the pick-up device rises and the fabric is carried to a predetermined position, the pick-up device begins to descend and compressed air is supplied from the second air supply tube, the piston cylinder mechanism is activated and the tip of the piston rod is The needle guide portion fixed to the needle lowers and pushes down the fabric while retracting the hollow needle along the needle hole. This releases the fabric.

Embodiment The present invention will be described below based on an embodiment shown in the drawings.

As shown in FIGS. 1 and 2, this device includes a box-shaped main body 1 and a head portion 2 fixed to the upper end of the main body.
a piston-cylinder mechanism 3 built into the main body 1; a needle guide section 4 fixed to the tip of the piston rod 32 of the piston-cylinder mechanism 3; A plurality of hollow needles 5 (two pairs of four needles in the embodiment) which can freely come out and go out from the bottom surface 41 of the guide part, and the main body 1 and the needle guide part 4 are covered, and the main body 1 is screwed. It has a skirt portion 6 fixed thereto.

The main body 1 is provided with a first air supply capillary 7 which horizontally penetrates the main body and is connected to the hollow needle 5 at one end. The other end of the tube is connected to the first
It is connected to the air supply pipe 9.

A second air supply capillary tube 11 is provided vertically through the head portion 2, and the lower end of the tube is connected to the top of the cylinder 31 in the piston cylinder mechanism 3.
The upper end is connected to the second air supply pipe 13 via the nipple 12.
connected to. The head portion 2 is also provided with a needle adjustment screw 14. This needle adjustment screw is threaded vertically into the head portion 2, and its lower end abuts against the upper surface of the piston head 33 of the piston cylinder mechanism 3.

Next, the needle guide section 4 has a bottom plate 41 having a smooth bottom surface.
The bottom plate 41 is provided with four needle holes 42 through which each hollow needle 5 passes. The needle hole 42 is provided obliquely so that when the needle guide section 4 moves back upward, two pairs of opposing needles 5 intersect with each other. Each pair of needle holes 42 is arranged in parallel in the front and back direction (in the direction perpendicular to the plane of the paper in FIG. 2).

The hollow needles 5 are in the shape of medical injection needles, and among the four needles, there are pairs of needles that face each other in the left-right direction (left-right direction in FIG. 2), and the tips of these pairs of needles face in opposite directions. Curved to intersect.

The illustrated reference numeral 15 is a nut for attaching and fixing the device to another base.

Further, reference numeral A in FIG. 2 indicates the fabric.

The pick-up device of the present invention is particularly effective for thick fabrics that are somewhat stiff, but it can also be used for thin fabrics by simply picking up and moving one piece of fabric.

The manner of use will be explained above.

When attempting to grasp the cut fabrics A stacked at a predetermined position, the pick-up device is operated while supplying compressed air from the first air supply pipe 9 to the hollow needle 5 through the first air supply capillary 7. Press down onto the heavy fabric. As a result, the needle guide section 4 is pushed upward, and the tip of the hollow needle 5 is pushed upward into the needle guide section 4.
The tip of the needle advances along the needle hole of the needle guide in the direction in which the pair of needles intersect with each other, and pierces the fabric A. If the second layer fabric is stuck to the top layer fabric while the needle is moving forward, the compressed air will be blown into the gap between the top layer and the second layer fabric. will definitely be blown away.

Since the pair of hollow needles 5 pierce the uppermost layer of fabric while expanding in opposite directions, the fabric does not fall off the needles or move in the horizontal direction, and the needle guide section 4 securely held on the bottom of the When this holding operation is completed, air supply from the first air supply pipe 9 is stopped.

In order to separate the fabric A from the bottom surface of the needle guide section 4, the second air supply tube 1 is removed from the second air supply tube 13.
1 to the top of the cylinder 31 to push down the piston rod 32 and lower the needle guide 4. As a result, the hollow needle 5 is inserted into the needle hole 42.
(Actually, the needle does not move, but the needle guide moves forward, so the movement is the same as if it were moved backward.)
The needle guide section 4 is then moved back to the bottom plate 41 of the needle guide section 4. The fabric A is then pushed down by the needle guide section 4 and pulled off from the needle 5.

The needle adjustment screw 14 is arranged such that the exposed tip portion of the hollow needle 5 is approximately 2.0 mm in height on the fabric A when the needle guide portion 4 is retracted to its maximum extent.
The stroke of the piston rod 33 is such that the needle adjustment screw 14 is shorter than the thickness of one needle and longer than the thickness of one needle, and the needle tip is hidden in the bottom plate 41 when the needle guide section 4 moves forward at its maximum. Adjusted by.

When the needle guide section 4 is retracted, the air near the top of the cylinder 31 flows back through the first air supply capillary 7 and is dissipated.

The at least two hollow needles 5 are provided in one pair (two pairs in the embodiment), but the number may be greater than this.

In the embodiment, each pair of hollow needles 5 is bent in opposite directions, but they may be bent in opposite directions and away from each other.

Effects of the Invention As described above, the present invention includes a main body, a head portion, a needle guide portion that is moved downward by a piston cylinder mechanism, and at least two needles 1 that can be freely retracted from the bottom surface of the needle guide portion by raising and lowering the guide portion. a pair of hollow needles, the compressed air is sent to the hollow needles through a first air supply capillary inserted through the main body;
At least two pairs of the hollow needles were arranged to protrude diagonally in opposite directions from the bottom surface of the needle guide section. Therefore, each piece of fabric is reliably held by the hollow needle, and does not fall off from the needle or shift in the horizontal direction. Further, in order to release the fabric, compressed air is sent to the cylinder through the second air pipe, and the needle guide part is pushed down by the action of the cylinder mechanism, so that the hollow needle retreats to the needle guide part. The fabric is placed on the bottom of the needle guide and is smoothly removed. As described above, according to the present invention, it is possible to accurately hold and release the dough.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing one embodiment of the present invention;
The figure is a longitudinal sectional view, and FIG. 3 is an enlarged sectional view of the main part. DESCRIPTION OF SYMBOLS 1...Main body, 2...Head part, 3...Piston cylinder mechanism, 4...Needle guide part, 5...Hollow needle, 7...First air supply capillary, 11...Second air supply capillary, 14...Needle adjustment screw, 31... Cylinder, A...Dough.

Claims (1)

[Scope of Claims] 1. A box-shaped main body 1, a head portion 2 fixed to the upper end of the main body, and a needle guide portion 4 that is given downward movement by a piston cylinder mechanism 3 built into the main body 1. , a pair of at least two hollow needles 5 attached to the main body 1 and capable of being retracted from the bottom surface of the guide part in diagonal directions opposite to each other as the needle guide part 4 moves up and down; The compressed air is sent to the hollow needle 5 through the first air supply capillary 7 inserted through the main body 1, and the second air supply capillary 1 inserted through the head portion 2.
1. A pick-up device characterized in that compressed air is sent to the top of the cylinder 31 of the piston-cylinder mechanism 3 through the piston-cylinder mechanism 3.