JPH01317930A - Paper work draw-out mechanism - Google Patents

Abstract

PURPOSE:To make it possible to positively draw out paper works one at a time from a magazine by conforming the direction of a maximum projection of an eccentric pin with the direction of a sucking face of a suction drum, and rotating the suction drum in synchronism with the eccentric pin in the direction extending from the lower end of the bottom of the magazine toward the upper end. CONSTITUTION:When paper works 4 stacked and housed in a magazine 10 are lifted from lower side up to a position of chain lines by an eccentric roller 12, the left upper side of a lower-most work 4 in contact with a plate 11 is pressed against a sucking face 1a of a suction drum 1 and sucked on it, and drawn out through a gap between a guide 16 and the suction drum in the direction of the arrow 16a by synchronous rotation of the suction drum 1 and the eccentric pin 12. In this instance, since other works 4 are lowered along the bottom plate 11 by rotation of the eccentric roller 12, a gap is produced between the upper ends of the lower-most paper works 4 and other works 4, and thus separation of both the paper works becomes easier. The group of works 4 in the magazine 10 is constantly finely vibrated due to the rotation of the eccentric roller 12, so that large gap does not occur between upper and lower layers of the works 4.

Description

[Detailed description of the invention] [Purpose of the invention] (Industrial application field) The present invention relates to a mechanism for taking out a stack of paper-like works.

(Prior Art) FIG. 3 shows a conventional mechanism for taking out paper-like works stacked in multiple layers (hereinafter referred to as "works").

A roller-shaped suction drum IA that rotates in the direction of arrow 3 is provided with a suction opening 2 that opens circumferentially from an axial hole connected to an air pump (not shown).
On the right side of A, a workpiece 4 is placed vertically on a conveyance band 7 which rotates in the direction of arrow 7a by a drive source 8, and is pressed against the suction drum LA by a pressing metal fitting 9 at the right end.

The upper part of the workpiece 4a on the left end is suctioned by the opening 2 of the suction drum LA, and taken out one by one from the gap at the tip of the blocking tool 5, and wound around the belt 6A wound around the suction drum IA and the auxiliary drum on the upper right. It is caught between the bent belts 6B and taken out to the left.

(Problem to be Solved by the Invention) However, the workpiece take-out mechanism with such a configuration not only requires a drive mechanism to press the workpiece against the suction drum, but also causes damage to the neighboring workpiece when the leftmost workpiece is taken out. It may shift and hit the stopper and break.

SUMMARY OF THE INVENTION An object of the present invention is to provide a workpiece take-out mechanism that does not require a workpiece drive mechanism and can reliably take out one workpiece at a time.

[Structure of the invention]

(Means for Solving the Problems) The present invention provides a hole for taking out a workpiece at one end of the bottom, and a square hole in the middle part. A suction drum with a flat suction opening is installed, an eccentric roller is placed outside the hole in the middle of the bottom of the magazine, and the rotation of the suction drum and eccentric roller is synchronized to attract the tip of the workpiece to the suction opening and take out the workpiece. This is the ejection mechanism.

(Function) In the workpiece retrieval mechanism equipped with the above means, by synchronizing the time when the eccentric roller protrudes the most toward the workpiece side and the time when the suction surface of the suction drum is on the workpiece side, the lowermost portion of the workpiece that has been pushed up is The upper ends of the workpieces are pressed against the suction surface, and the stacked workpieces are constantly vibrated by the rotation of the eccentric roller.

(Embodiment) Hereinafter, an embodiment of the workpiece take-out mechanism of the present invention will be described with reference to FIGS. 1 and 2.

FIG. 1 is a side view showing an embodiment of the workpiece take-out mechanism of the present invention, and FIG. 2 is a sectional view taken along line XX in FIG. 1.

In FIG. 1, there is an opening 11a across the entire width at the upper end of the bottom plate 11 of the magazine IO in which the work 4 is stored, and two opening holes 11b are provided in the middle part in the direction perpendicular to the plane of the paper.

As shown in FIG. 2, on the left side of the opening 11a, there are two suction surfaces 1a and a suction opening 2 in the axial direction, which are rotatably supported by bearings 23 and 24 on the left and right frames 14A and 14B. A cylindrical suction drum 1 is provided, and this suction drum 1
Inside, a cylindrical center valve 13 with two openings 13a whose left end is connected to an air pump (not shown) is coaxially inserted through bearings 25 and 26 and fixed to the frame 14A with a clamp 27. There is.

Further, at the lower left of the opening 11b of the bottom plate 11, an eccentric roller 12 is provided rotatably via a bearing 19 and a shaft 18 as shown in FIG. 2, and a gear 12 is attached to one end of the shaft 18. A gear 22 attached to the other end of the suction drum 1
are meshed with each other via a planetary gear 21.

Here, the mounting angle of the suction drum 1 and the eccentric roller 12 is
Gears 20, 21, and 22 are engaged with each other so that the time when the suction surface 1a of the suction drum 1 comes to the opening 11a coincides with the time when the eccentric roller 12 protrudes the most into the magazine 10.

Further, a friction body 12a having minute protrusions on the outside is adhered to the circumference of the eccentric roller 12, and the suction drum 1 and the eccentric roller 12 are attached to the left end of a shaft 18 connected to a drive device (not shown) by a belt. Arrow 3A, respectively, with the drive boob.
Rotate in direction 3B.

Furthermore, a guide plate 16 and a stopper 15 are attached above the opening 11a of the magazine 10.

In the workpiece separation and takeout mechanism having such a structure, when the lower side of the workpieces 4 stacked and stored in the magazine 10 is lifted up by the eccentric roller 12 in the shape of a chain line in FIG. The upper left side of the workpiece 4 at the lower end is pressed against the suction surface 1a of the suction drum 1 and is attracted, and the rotation of the suction drum 1 and the eccentric pin 12 pulls it out from the gap between it and the guide 16 in the direction of the arrow 16a. Since the lower side of the workpiece 4 descends toward the bottom plate 11 due to the rotation of the eccentric roller, a gap is created between the upper end of the lowest workpiece 4 and the upper ends of the other workpieces 4, making it easier to separate them.

Also, the workpieces 4 stacked in the magazine 10 are as follows.

Since the workpiece 4 is constantly subjected to minute vibrations by the minute protrusions of the friction body 12a on the outer periphery of the eccentric roller 11, a large gap is not created between the upper and lower layers of the workpiece 4, and the workpiece 4 is sent toward the bottom plate.

Note that the material of the workpiece in the above embodiments may be other than paper, such as a polyester film.

(Effects of the Invention) As described above, according to the paper-like work taking-out mechanism of the present invention, paper-like works are stored in a magazine having holes at the upper end and middle part of the inclined bottom, and holes are provided outside the upper end holes of the magazine bottom. A paper-like work is taken out using a suction drum with a suction surface and an eccentric pin with an outer peripheral friction body provided outside a hole in the middle part of the bottom of the magazine that rotates in conjunction with the suction drum. It is possible to obtain a paper-like workpiece take-out mechanism that does not require a mechanism and can reliably take out one workpiece at a time.

[Brief explanation of the drawing]

Fig. 1 is a side view showing an embodiment of the paper work take-out mechanism of the present invention, Fig. 2 is a sectional view taken along line XX in Fig. 1, and Fig. 3 is a conventional paper work take-out mechanism. FIG. ■...Suction drum 4...Paper-like work 10...Magazine 12...Eccentric roller 13...Center valve agent Patent attorney Nori Chika Ken Nobuyuki Daikomaru Ken Figure 1

Claims (1)

[Claims] In a paper work take-out mechanism that takes out paper work stacked at the bottom of a magazine from below, the bottom of the magazine is arranged at an angle, and a suction drum with a suction surface on the outer periphery is used to pick up the paper work at the upper end of the bottom. An eccentric pin is provided on the outside of the extraction hole, and an eccentric pin that protrudes from the hole at the time of maximum protrusion is provided on the outside of the hole in the middle part of the bottom, and the maximum protrusion direction of the eccentric pin is aligned with the suction surface direction of the suction drum. A mechanism for taking out paper-like works, characterized in that the suction drum and the eccentric pin are rotated synchronously from the bottom end of the magazine toward the top end.