JP2017024013A - Work supply device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a work supply device capable of supplying work to a lower end of a nosepiece in a correct posture, even when the work has a thin wall.SOLUTION: A work supply device is equipped with a nosepiece 5 equipped with a vertical hole 6; work feeding means for feeding disc-shaped work W to the inside of the vertical hole 6; and a rod-shaped punch 18 which extrudes the work W supplied to the inside of the vertical hole 6 downward. On an opposite surface of an inner wall of the vertical hole 6, moving plates 15 elastically repelled in the inside direction are disposed to sandwich the work w. A suction hole 19 is provided on the rod-shaped punch 18 to move the work W in the inside of the vertical hole 6 while adsorbing that.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a workpiece supply device for supplying a small, disc-shaped workpiece to a predetermined position.

  As a workpiece supply device for supplying a small and disk-shaped workpiece such as a nut or a rivet to a predetermined position, a device disclosed in Patent Document 1 is known. This apparatus has a structure in which a workpiece is pushed downward through a vertical hole of a nose piece by feeding workpieces one by one into the nose piece by air pressure and lowering a rod-shaped punch from above.

  In Patent Document 1, since the workpiece is a nut having a certain thickness, the workpiece can be moved inside the vertical hole of the nose piece while being in the correct posture and supplied from the lower end of the vertical hole.

  However, when the work is a thin rivet, the thickness of the work is so small that it may be tilted while moving inside the vertical hole of the nosepiece. For this reason, the workpiece may not be supplied in a correct posture, or the workpiece may be crushed by the rod-shaped punch inside the vertical hole.

Japanese Patent No. 3368068

  Accordingly, an object of the present invention is to solve the above-described conventional problems, and to provide a workpiece supply device that can supply a workpiece from the lower end of the nosepiece in a correct posture even when the workpiece is thin.

  The present invention made to solve the above problems includes a nosepiece having a vertical hole, a work feeding means for feeding a disk-shaped work into the vertical hole, and a work supplied into the vertical hole. A workpiece supply device including a rod-like punch that pushes downward through a vertical hole, and a movable plate that is bounced inwardly is disposed on the opposing surface of the inner wall of the vertical hole, and the rod-like punch adsorbs the workpiece It is a thing provided with the adsorption | suction hole which does.

  Note that, as in claim 2, the workpiece feeding means can be a pusher driven by a cylinder. According to a third aspect of the present invention, the upper end of the movable plate can be set as a temporary holding position for the workpiece fed by the workpiece feeding means.

  The workpiece supply apparatus of the present invention has a structure in which a workpiece is extruded downward through a vertical hole of a nose piece as in the conventional case. However, in the present invention, since the movable plate that is repelled inwardly is disposed on the opposite surface of the inner wall of the vertical hole, the workpiece is held from both sides by these movable plates, and the vertical hole is formed by the rod-shaped punch. The inside is moved downward. In addition, since the rod-like punch is provided with a suction hole for sucking the workpiece, the workpiece is moved downward while being attracted to the lower end of the rod-like punch. Accordingly, the work is moved and supplied to the lower end of the nosepiece while maintaining the correct posture while maintaining the horizontal state.

1 is an overall view of a workpiece supply device according to an embodiment. It is AA sectional drawing of FIG. It is AA sectional drawing which shows the state in which the workpiece | work was sent. It is a longitudinal cross-sectional view of a nosepiece. It is a bottom view of a nosepiece. It is a longitudinal cross-sectional view of a nosepiece. It is explanatory drawing of an operation state. It is explanatory drawing of an operation state.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is an overall view of a workpiece supply apparatus according to an embodiment, where 1 is a punch retainer and 2 is a backup plate thereof. These are mounted on a slide on the upper side of a press machine (not shown) and can descend toward a die 3 fixed to a bolster of the press machine.

  A nosepiece 5 is provided below the punch retainer 1 via a guide post 4. As shown in FIG. 2, a vertical hole 6 and a horizontal hole 7 are formed inside the nosepiece 5. The front end of the horizontal hole 7 reaches the vertical hole 6. In the present embodiment, the workpiece W is a thin disc-shaped rivet, and the vertical hole 6 has an inner diameter through which the workpiece W can pass while maintaining a horizontal posture. The lateral hole 7 has a flat shape that allows the workpiece W to pass while maintaining a horizontal posture.

  The horizontal hole 7 is for feeding a disk-shaped workpiece W into the vertical hole 6 and is provided with a workpiece feeding means 8. The work feeding means 8 includes a chute assembly 9 and a pusher 11 driven by a cylinder 10. A bent work passage 11 is formed inside the chute assembly 9 as shown in FIG. 2, and the work W is fed by air pressure from the end of the chute assembly 9 through the resin chute 22. As in the prior art, the resin chute 22 is connected to a parts feeder (not shown). The tip of the bent work passage 11 communicates with the horizontal hole 7, but since the pusher pin 13 that can be projected and retracted is provided at the tip of the work passage 11, the leading work W stops at the position shown in FIG. 2.

  The pusher 11 advances and retreats in the horizontal hole 7. When the pusher 11 advances in the horizontal hole 7 from the state of FIG. 2, the pusher pin 13 is retreated and one work W at the tip is pushed out. As shown in FIG. 3, it is fed to the temporary holding position inside the vertical hole 6. Since the pusher 11 is restrained by the pusher 11, the subsequent work W remains at the position shown in FIG.

  The vertical hole 6 of the nosepiece 5 has a downward extension. As shown in FIGS. 4 and 5, the vertically elongated portion is composed of two fixed circular arc plates 14 arranged opposite to each other and two movable plates 15 arranged opposite to each other in a direction perpendicular to the fixed arc plates 14. . The movable plate 15 has an arc-shaped inner surface, and is always bulleted inward by a spring 16. The movable plate 15 is supported by upper and lower pins 17 so as to be movable in the radial direction. As shown in FIG. 5, the fixed arc plate 14 and the two movable plates 15 are configured to contact the outer periphery of the workpiece W. The workpiece W is fed into the vertical hole 6 from the direction perpendicular to the paper surface of FIG. 4 and temporarily held in a state of being sandwiched between the upper ends of the two movable plates 15. Thereafter, the rod-shaped punch 18 is lowered to move the workpiece W downward.

  As shown in FIG. 1, the upper end of the rod-shaped punch 18 is fixed to the punch retainer 1. When the punch retainer 1 is brought close to the nose piece 5, as shown in FIG. The work W temporarily held at the upper end is moved downward. At this time, the movable plate 15 disposed oppositely passes the work W while being spread outward by the work W. However, since the elastic force of the spring 16 is constantly acting on both sides of the work W, the work W is There is no rattling.

  As shown in FIGS. 4 and 6, the rod-shaped punch 18 has a suction hole 19 for sucking the workpiece W at the center thereof. For this reason, the workpiece W moves inside the vertical hole 6 while being attracted to the lower end of the rod-shaped punch 18 and is supplied to the lower end thereof. Therefore, the workpiece is supplied in a correct posture while maintaining the horizontal state.

  In this embodiment, the aluminum plate 20 is placed on the die 3 as shown in FIG. 7, and the workpiece W is caulked to the aluminum plate 20 by the rod-shaped punch 18. The procedure is as follows. That is, when the aluminum plate 20 is set on the die 3 and the slide of the press machine is lowered, first, the lower end of the nose piece 5 comes into contact with the aluminum plate 20 as shown in FIG.

  When the slide of the press machine is further lowered from this state, the punch retainer 1 is lowered with respect to the nose piece 5, and the rod-shaped punch 18 press-fits the rivet as the work W from the lower end of the nose piece 5 into the aluminum plate 20. Caulking W. As described above, since the workpiece W moves in the vertical hole 6 with the correct posture, the caulking defect does not occur.

  As shown in FIG. 3, if the proximity sensor 21 is attached to the temporary holding position and the slide of the press machine is lowered after detecting that the workpiece W has been temporarily held, the idle shot is prevented. can do.

  As described above, when the workpiece supply device of the present invention is used, even when the workpiece W is thin, the workpiece W does not tilt inside the vertical hole 6 of the nosepiece 5 and remains in the correct posture. Can be supplied.

  In the above embodiment, the workpiece W is a rivet, but is not limited to this, and can be widely used for supplying a thin and disc-like workpiece such as a one-yen coin. In the above embodiment, the work supply device of the present invention is incorporated in a press machine, but the application is not limited thereto.

DESCRIPTION OF SYMBOLS 1 Punch retainer 2 Backup plate 3 Dies 4 Guide post 5 Nose piece 6 Vertical hole 7 Horizontal hole 8 Work feeding means 9 Chute assembly 10 Cylinder 11 Pusher 12 Work path 13 Pusher pin 14 Fixed arc plate 15 Movable plate 16 Spring 17 Pin 18 Rod punch 19 Adsorption hole 20 Aluminum plate 21 Proximity sensor 22 Resin chute W Workpiece

Claims (3)

Workpiece comprising a nosepiece having a vertical hole, work feeding means for feeding a disk-shaped work into the vertical hole, and a rod-like punch for extruding the work supplied into the vertical hole downward through the vertical hole A feeding device,
A movable plate that is bounced in the inner direction is disposed on the opposing surface of the inner wall of the vertical hole,
The workpiece supply apparatus, wherein the bar-shaped punch is provided with a suction hole for sucking a workpiece.   2. The workpiece supply apparatus according to claim 1, wherein the workpiece feeding means is a pusher driven by a cylinder.   2. The workpiece supply apparatus according to claim 1, wherein the upper end of the movable plate is set as a temporary holding position of the workpiece fed by the workpiece feeding means.

Images