JPS5936047A - Needle pickup device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Various needle pick-up devices are well known that employ one or more needles operable to pierce and pink-up engagement through single or multiple layers of fabric or other materials. ing. This type of device is described in U.S. Patent No.
No. 601,390, which teaches the use of a plurality of needles each attached to a fixed portion and a movable portion of a pickup head and spacedly engaged with a layer of fabric to attach the fabric to the pickup head. are doing.

Another generally similar mechanism is shown in US Pat. No. 3,583,698, both of which were developed by the assignee.

The present invention relates to an improvement of a previously developed technology, and the improvement points are (
(b) maintaining the costume piece in a predetermined relationship with the pick-up device while transporting the costume piece to another location; (C) All three of the above three points, including accurately placing the garment piece in a new location while the needle is disengaging from the pick-up device [a], can be accomplished with extremely high precision. Furthermore, the shape of the needle in the device is such that it does not damage the fabric either by its penetrating action or by its withdrawal from the fabric. Pick-up from loading platform
A device is disclosed that is mounted to release the device. This pickup device consists of a frame having a vertical axis and a horizontal axis, and a plurality of spaced apart needles fixed to the frame to protrude downward from the back side of the frame parallel to the vertical axis. A combination clamping and stripper plate is horizontally located below the needle and bale. Apparatus is provided for moving a clamping and stripper plate toward the sheet material disposed on the loading platform for first clamping the sheet material against the loading platform. After this, needle! , -1 through the hole in the stripper plate and through the sheet material, but the interlocking movement of this needle through the sheet material is limited by the stripper plate and a stop device directly below the frame.

The sheet material pierced by the needle is thus attached to the needle as it is transported to another location. When reaching another predetermined location, the clamping and stripping plate force (1) is activated to pull the stripper plate away from the frame, and thus, in the stripping operation, the button is moved back from the sheet material force 1 and the sheet material is lifted. 11
■Place it in a designated place.

Now, regarding the drawings, first of all, 1(a), 1(b) and 1(
C) Referring to the figure, there is shown a possible pick-up sequence resulting in the pick-up device of the invention in conjunction with the previously developed pick-up process. Section 1(a)
In the figure, the advance pickup device 10 described in U.S. Pat. No. 3,940,1251 is placed on a platform 13
The uppermost fabric J'1 is shown being picked up from the pile of fabric pieces 11. Shown in dotted lines is a shutter 12 which assists the binder 10 in separating the picked up fabric layer from the pile of fabric pieces as it feeds the fabric layer onto the shutter 12. FIG. 1(b) shows another position of the shutter 12, in which the piece of fabric 14 is placed below the pick-up device 15 of the invention.

The following is a more detailed explanation of the pickup equipment @15.
moves to a position directly above the fabric piece 14 and attaches the fabric piece 14 to the pickup device M15. FIG. 1C shows in dotted lines the pick-up device 15 which has been moved to another position above the station 16 where the fabric layer 14 was placed.

The above describes a typical pick-and-transfer order, but it will be appreciated that various variations on such a pick-up and transfer order are possible. For example, a series of pick-up devices 15 may be arranged to pick up pieces of fabric from various loading platforms or shutters, or different pieces of fabric may be stored, for example, at a receiving station 16, which station sends the pieces of fabric. It can also be hemmed or sewn.

Describing the more detailed structure of the pickup device 15 shown in FIGS. 2 to 10, it can be seen that the device 15 includes a horizontal mounting rod 17 to which a plurality of pneumatic actuators 18 are attached. As shown in FIG. 10, each of the air actuators 18 moves the cylinder 1 through the frame 17 by admitting air through two holes at the top of the cylinder 19.
It consists of a hollow cylinder 19 containing a piston 20 that reciprocates towards 9. The air pressure is controlled by the air hole 2 at the bottom of the cylinder 19.
2, and moves the piston 20 to its upper position whenever air pressure is no longer applied through the air hole 21. The piston 20 is connected to an arm 23, and the arm 2
3 passes through the frame and includes a hollow needle holder 23a on the underside of the frame. The shaft of the needle 24 is held within the needle holder 23a by a set screw 26. A flat washer-shaped stop 27 is fixed to the end of the spear 1 holder 23a. This stopper 27 is placed horizontally on the lower side of the frame 17 (also known as a clamp) and is in contact with the upper surface of the IJ collar plate 28, and is connected to the a1 holder 23.
The purpose is to limit the movement of the needles 24 downwardly through the holes provided in the plate 28 and the fabric piece 14 when the needles a are moved downwardly by the respective pneumatic actuators 18. FIG. 8 shows the relative position of the needle actuation cylinder and stripper plate. The needles and their actuating cylinders are arranged in a triangular configuration with an elongated portion of the stripper plate 28 extending below each station.

S) The IJ collar plate 28 moves toward and away from the frame 17 by means of a pneumatic cylinder 18 attached to the frame 17. The actuating rod 28a interconnects the plate air actuating cylinder 18 and the plate 28 so that when the air cylinder is actuated, the plate 2
Move 8 up and down. A guide bin 30 is rigidly secured to the frame 17 and depends from the frame within a portion 28c of the stripper plate 28.

FIG. 3 shows the position of &28 after the IJ collar plate 28 moves downward and hits the fabric piece 14 and holds it against the shutter 12. This causes the piece of fabric 14 to be held firmly before the sword moves to pierce the piece of fabric 14 at the initial stage of the picking operation. Fourth
The figure shows the needle clamping and stripper plate 28 and the fabric piece 14.1.
! 1 position is shown for each phase of each component of the pick amplifier device after passing through. The tip of each nail can also be seen penetrating into the shutter 12, which is provided with a slot for this purpose. After pickup, the pressure is reduced to each piston 2
0 is released on the upper side, and the cloth I'6 piece 1 is released by the pressure on the lower side.
4 and the needle together with the fabric piece 14.) The IJ collar plate is retracted to position 11 in FIG. 5, which is the transfer ready position.

FIG. 6 shows the pickup device U moved just above the receiving station 16. As shown, the device 15 has a needle 24
The protruding end of the receiving station has been moved 1 blue so that it is only slightly above the surface of the receiving station. Once the piece of fabric 14 is in this position (the purpose of which is to base the piece of fabric 14 on the previously placed piece of fabric), the stripper cylinder 18 is actuated to retract the stripper plate from the tip of the needle 24. (as shown in Figure 7) causes IJ activity. After placing the fabric strip, the stripper plate and needle are reactivated to the position shown in FIG. 2 and returned to the original pick-up station.

Finally, FIG. 9 shows a typical needle shape that has been found to be particularly perfect and useful. The illustrated needle is actually a conventional commercially available sewing machine needle having a groove 24a and a weft hole 24b provided therein.

As with typical products, sewing machine needle 24 has a concave surface 24Q that reduces the width of the needle. Typically, the needle will penetrate the fabric layer far enough so that its tip pierces the fabric layer just beyond needle hole 24b, and enough so that the fabric slightly surrounds the area of concave surface 24C. Stretch it from the Gold 1 holder. A particular advantage of using a conventional sewing machine needle is that the conventional sewing machine needle is designed to penetrate most fabrics without damaging or tearing their shape.

Another advantage is that even if the needle breaks or wears out, it can be quickly and inexpensively replenished.

The above description is of a specific embodiment and is merely illustrative of the invention. For example, a Φ1° structure is perpendicular to a certain material, -! Although shown as descending parallel to the vertical axis passing through the frame, these φ points can also be arched slightly outward to increase their relative retention. Also, as shown, the device can be operated in a slightly different order from the numerical order. For example, for some materials, the plate 28 may not need to be lowered against the loading platform to clamp the workpiece against the loading platform prior to needling. In such a situation, for example, the plate 28 may be lowered to hit the workpiece.
To effect the piercing action by moving the plate 28 downwards and against the stop 27, it is only necessary to actuate the needle.

After this, stripping is first performed as described below. In order to fully understand the scope of the present invention, attention should be paid to the scope of the invention.

[Brief explanation of the drawing]

Figure 1 (a) shows the use of a fabric picker placed on a shutter to pick up a piece of fabric from a pile of fabric pieces and transfer it to the pink-up device of the present invention) Figure f (b) shows iJV 1 (a) shows the big amplifier device of the invention as it initially appears in relation to the shutter carrying the piece of fabric placed by the pick-up device of FIG. 1(c), and FIG. Fig. 2 shows another position of the pick-up device of the invention picking up a piece of fabric from one location and preparing to transfer it to another location and placing it thereon; Figure 2 shows the pick-up device of the invention in a rest or inactive position; side view,
FIG. 3 is a side view of the pickup device shown in FIG. 2 in which the clamp/stripper plate has been moved to press a piece of fabric against the loading platform that supports the fabric piece. FIG. 4 is a side view of the pick-up device of FIG. 2 shows the pick-up device of FIG. 2 when the needle is actuated to pass through the clamping and stripper plate, the fabric piece, and the shutter loading platform; FIG. 5 shows the pick-up device in the transfer position, and FIG. Figure 6 shows the pick-up device in the position just before placing the piece of fabric, Figure 7 shows the pink-up device of Figure 2 operating its stripper plate to remove the piece of fabric from the needle, and Figure 8 shows the pick-up device in the position just before placing the piece of fabric. Figure 2 is a top view of the pickup device, and Figure 9 is the pickup device shown in Figure 2! FIG. 10 is a partial side view of a sewing machine needle that can be used in H. FIG. In the figure, numeral J 12 is a loading platform, IMsi 5 on the seat side is a big amplifier device, 17 is a frame, 24 is a needle, and 28 is a clamping/stripping plate. BORAITETSED

Claims (1)

[Claims] 1. A frame, a plurality of spaced apart needles fixed to the frame so as to protrude downward from the back surface of the frame, and a plate extending horizontally across the entire underside of the frame. a hole defined by the plate for receiving the needle; a device for passing the needle through the plate and the sheet material; a device for restricting penetration into the sheet material; a device for holding the plate and needle in a predetermined relative position while transporting the sheet material to another location; a device for moving the plate such that the sheet material is removed from the needle and placed at the different location by separating the plate from the frame and retracting the needle from the sheet material when the plate reaches the frame; A device adapted to pick up and release layers from a loading platform. 2. The device according to claim 1, wherein the needle projects downward parallel to the vertical axis. 3. The device according to claim 1, wherein a stop device is provided intermediate the frame and the plate for restricting the movement of the needle through the plate and into the material. A device characterized by: 4. Apparatus according to claim 1, characterized in that said needle is a conventional sewing machine needle. 5. Device according to claim 1), characterized in that the plate is first transferred towards the material by the needle movement device. 6. The device according to claim 5, characterized in that: 1 a device is provided for lowering the plate and tightening the material on the platform before actuation of the needle motion device; device to do.