JPS6234657Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a work supply device for supplying thin plate-like workpieces one by one to a working machine such as a screw tightening machine.

When attaching a workpiece to an object being transported on a line and fastening it with a screw, the screwdriver is equipped with a suction mechanism that attracts the workpiece, and the screwdriver is attached to the line and the workpiece. Automation concepts are being considered in which the above operations are performed fully automatically by reciprocating movement to and from the supply section. In this case, it is desirable to automate the work of supplying the workpieces to the supply unit in unit quantities, and if this is achieved, complete unmanned workpiece supply and fastening can be achieved.

An example of a device that meets this type of demand is the device shown in FIG. This device has a cutting tool 7 that moves horizontally along thin plate-shaped works A stacked in a magazine 6. Further, on the extension of the bottom plate 16, a table 9 on which the workpiece A is placed is biased so as to be positioned on the same plane, and this table 9 is centered on the joint with the bottom plate 16. It is configured to be rotatable by a predetermined angle.

In the above device, when the telescopic drive source 8 is activated, the cutting tool 7 moves forward and the workpiece A can be fed onto the table 9. Further, when the predetermined work machine 10 is at the predetermined work position, the table 9
0 and held in an inclined position, and the workpiece A is supplied while being held in a predetermined position. At this time, the cutting tool 7 is connected to the bottom plate 16 and the table 9.
The table 9 passes through the joint with the bottom plate 16 and reaches the upper part of the middle of the table 9, and since the workpiece A supplied to the table 9 is pressed by the tip of the cutter 7, the table 9 passes through the joint with the bottom plate 16. When the workpiece A is rotated around the center, the edge of the workpiece A pressed by the cutting tool 7 is pried and damaged, and at the same time, the cutting tool 7 also receives a downward pressing force from the workpiece A, and the cutting tool 7 There are some drawbacks such as 7 being bent.

The purpose of this invention is to eliminate the above drawbacks.
Examples will be described below based on the drawings.

FIG. 1 is a top view of a workpiece supply device as an embodiment of the present invention, FIG. 2 is a sectional view taken along line A-A in FIG.
FIG. 3 is a sectional view taken along line BB in FIG. 1. As shown in these figures, the workpiece supply device consists of a pair of frames 2 and 3 with a cross-sectional shape erected in a proper position on a base 1 so as to face each other from side to side. As shown in Fig. 4, it enters the magazine 6 through the slit 5 for cutting out the workpieces at the lower end, and the thin plate-shaped workpieces A stacked horizontally in the magazine 6 are placed on the front wall side by the unit number from the bottom. A work cutting tool 7 that cuts through the slit 4, a telescopic drive source 8 that moves the cutting tool 7 back and forth to perform the cutting action described above, and a workpiece A on the upper part.
The work A cut out from inside the magazine 6 by the cutting tool 7 is provided with a table 9 for placing and holding the work A
Standing posture suitable for receiving the work and other work equipment 10
has a workpiece supply table 11 whose tilted posture (see the chain line in FIG. 2) suitable for taking out the workpiece A on the table 9 and whose posture can be changed freely, and a bullet machine 12 which maintains this workpiece supply table 11 in an upright posture at all times. is integrally provided with the telescopic drive source 8, and presses the workpiece A against the supply table 11 at the same time or immediately after the work cutout tool 7 cuts out the workpiece A from the magazine 6 and sends it onto the table 9 of the supply table 11. A pressing tool 13 is provided for acting to change the posture of the supply table 11 to an inclined posture.

The slits 4 and 5 formed in the front and rear walls of the magazine 6 have a width equal to or slightly longer than the width of the workpiece A, and a height equal to or slightly longer than the thickness of one piece of the workpiece A. ing. Also, the width of the cutting tool 7 is equal to the width of the workpiece A,
The thickness is equal to or thinner than the thickness of one work piece. Therefore, the workpiece A cut out onto the table 9 of the supply table 11 by the cutting tool 7
is set to one sheet in the illustrated example. Further, a light emitting device 1 is placed at a position above the lower end of the magazine 6 at a suitable height, facing each other through the gap between the frames 2 and 3.
4 and a light receiver 15 are provided to monitor the remaining amount of workpieces A in the magazine 6.

In the illustrated example, two magazines 6 are provided at appropriate intervals on the right and left sides. Both magazines 6, 6 are fixed to a common bottom plate 16, and this bottom plate 16 is provided to be slidable in the left-right direction with respect to the base 1. A connecting member 1 is attached to a slide shaft 17 that can freely slide in the same direction as the bottom plate 16.
8 and 18. Slide axis 1
7 can be slid by a length corresponding to the distance between the two magazines 6, 6, and this sliding is performed by an air cylinder or the like (not shown). This air cylinder is configured to be driven by a detection signal from a light receiver 15 provided on the side wall of the magazine. Therefore, when the work A in one magazine 6 is emptied by the cutting operation, the slide shaft 17 slides and the other magazine 6 is moved to a position where it can be cut out by the cutting tool. This ensures continuous operation of the workpiece cutting operation.

The cutting tool 7 has a thin plate-like cutting tool main body 7a.
and a boss portion 7b for attaching the main body 7a to the telescopic drive source 8.

In the illustrated example, the telescopic drive source 8 uses an air cylinder or a hydraulic cylinder. This cylinder 8 is configured to be driven in conjunction with the reciprocating movement of the working machine 10. The amount of expansion and contraction of the cylinder 8 is detected by two limit switches 19, 19 provided within the base 1. The work cutter 7 is attached to the rod 8a of the cylinder 8 with its boss 7b loosely inserted and the boss 7b pressed forward by a coil sling 20. On the other hand, the pressing tool 13 is integrally formed at the tip of the rod 8a. The work cutting tool 7 is attached to the coil sling 20
The rod 8a of the cylinder is provided through the
The forward and backward stroke of the workpiece cutting tool 7 is regulated by a stopper 21 provided in the base 1, and the tip of the cutting tool 7 is positioned at the joint between the bottom plate 16 and the table 9, thereby enabling the workpiece cutting operation. This is to do so. In addition, by doing so, the cutting tool 7 and the pressing tool 13 have different forward and backward strokes.
It is now possible to drive the various members by one cylinder 8.

The table 9 constituting the supply table 11 is composed of a receiving part 9b having a flat surface formed on the upper part and an arm part 9c extending in a direction crossing the receiving part 9b. The lower end of the arm portion 9c is located below the joint between the bottom plate 16 and the receiving portion 9b, and this arm portion 9c is pivoted at a proper position P at the lower end, and the table is rotated around this P. 9 is configured to be rotatable.
Further, one end of a bullet 12 (described later) is fixed to the arm portion 9b, and the arm portion 9c is positioned on the moving path of the cutting tool 7, and the upper surface of the retreating end of the receiving portion 9b is connected to the edge of the bottom plate 16. It is configured so as to come into contact with the part. Furthermore, the table 9 has a rib portion 9a that bulges upward on the periphery excluding the rear portion.
. . . is formed to prevent the workpiece A from slipping off the table 9 when the supply table 11 shifts to an inclined position. The rotation angle of the supply table 11 is regulated by bolt-shaped stoppers 22 and 23 that protrude horizontally and obliquely upward from the base 1 near the supply table. The inclined posture of the supply table 11 is such that the table 9
It is desirable to set the planes so that they are orthogonal.

In the illustrated example, the working machine 10 uses a screw tightening machine equipped with a screw feeding device. At the center of this screw tightening machine 10 is a pipe 24 connected to a vacuum pump (not shown).
is provided, and the workpiece A is attracted to the tip of this pipe 24. This screw tightening machine 10 reciprocates in an inverted U-shaped trajectory between the solid line position and the dashed line position shown in the figure by a swing drive unit (not shown). In addition, 25 in FIG. 2 is a guide cylinder for guiding the pressing tool 13, and one end of the bullet 12 is attached to the outside of this cylinder.

In the above configuration, when the telescopic drive source 8 extends from the retracted state, the cutting tool 7 first enters the magazine 6 through the slit 5, and transfers one workpiece A through the slit 4 to the supply table 11 in the upright position. Cut it out on table 9. When the cutting tool 7 moves further forward and stops when its tip reaches the edge of the bottom plate 16, the workpiece A that is pushed out and moved is brought to a position where it comes into contact with the rib portion 9a provided on the receiving portion 9b of the table 9. Supplied. Since the pressing tool 13 moves forward even after the cutting tool 7 stops, the pressing tool 13 comes into contact with the arm 9c of the table 9 and moves forward, causing the table 9 to rotate around the P of the arm 9c. It moves and comes into contact with the stopper 23 and stops. At this time, the table 9 can be rotated in the direction away from the pressing tool 13, so even if the workpiece A is pressed by the cutting tool 7, no force is applied to the workpiece A in the direction of prying it, and the workpiece A can be cut out. It can be detached without receiving any force from the tool 7. Thereafter, the working machine 10 moves close to the table 9 and picks up the workpiece A on the table 9.
Then, the working machine 10 draws an inverted U-shaped trajectory,
The work A taken out from the table 9 is fastened to a conveyed object (not shown) on the line.

On the other hand, when the work machine 10 completes taking out the workpiece A, the telescopic drive source 8 retracts, and after retracting, it telescopically operates again to cut out the workpiece and change the attitude of the supply table 11 as described above. In this way, the workpiece A is automatically fed in conjunction with the reciprocating movement of the working machine.

As explained above, the present invention configures the cutting tool and the pressing tool integrally and rotatably by the operation of the telescopic drive source, and moves the cutting tool at the position where the forward end of the cutting tool reaches the joint between the bottom plate and the table. While stopping
The table to which the workpiece cut out by the cutting tool is supplied is composed of a workpiece receiving part and an arm part extending in a direction crossing the workpiece receiving part, and the lower end of this arm part is pivotally supported so that the center of rotation of the table is connected to the bottom plate. The arm is placed below the joint between the press tool and the table, and the arm is placed on the movement path of the press tool, and the table is rotated by its movement, so the work machine can take out the workpiece in the best posture. The workpiece can be fed at an angle corresponding to the working machine, which not only eliminates work errors, but also always moves the workpiece away from the edge of the cutting tool when the table is in a predetermined position. Even if the workpiece is pressed by the cutting tool, the workpiece can be smoothly removed from the cutting tool without receiving any force from the cutting tool when the table rotates, preventing damage to the workpiece or the cutting tool. There are advantages such as no damage.

[Brief explanation of the drawing]

The figures show an embodiment of the work supply device according to the present invention, in which Fig. 1 is an overall top view, and Fig. 2 is an A of Fig. 1.
-A enlarged sectional view, FIG. 3 is a BB sectional view of FIG. 1, FIG. 4 is a detailed perspective view of the main part of the present invention, and FIG. 5 is a sectional view of the main part of the conventional example. 4, 5...Slit for cutting out the workpiece, 6...
Magazine, 7...Presence, 8...Telescopic drive source, 9...
...table, 9a...rib part, 9b...receiving part,
9c...Arm part, 10...Work machine, 11...Supply table, 12...Bunch machine, 13...Press tool, A...Workpiece.

Claims (1)

[Claims for Utility Model Registration] A cutting tool 7 that separates a unit number of workpieces A is configured to be moved forward and backward in the horizontal direction along the bottom plate 16 by a telescopic drive source 8, and the workpieces are separated on the extension of this cutting tool 7. The table 9 on which A is placed is arranged and held so that it can be rotated by a predetermined angle, and the table 9 is elastically biased so as to be located on the same plane as the bottom plate 16. In a workpiece supply device configured to move the cutting tool 7 by a drive source 8 and supply the workpieces A onto the table 9 in unit numbers, a pressing tool 13 is provided on the rod of the telescoping drive source 8 and extends parallel to the cutting tool 7. The cutting tool 7 is attached to the pressing tool 13 by being biased toward the forward side by the spring 20, and the forward end of the cutting tool 7 is attached to the bottom plate 16.
The pressing tool 13 and the cutting tool 7 are arranged integrally and movably by the pressing tool 13 alone, and the table 9 is arranged on a flat surface extending on an extension of the bottom plate 16. The lower end of the arm 9c is pivotally supported to center the rotation center of the table 9 below the joint between the bottom plate 16 and the table 9. A work supply device characterized in that the arm portion 9c is located on a moving path of the pressing tool 13.