JPH02123049A - Supplier for sheet material - Google Patents

Abstract

PURPOSE:To surely detach the second sheet material, adhering to a sheet material in the uppermost part, when the sheet material is lifted, by providing a double-sheet takeout preventing mechanism, giving separating force larger than the adhering force between the two sheet materials, in the front side of conveying direction in a sucking location. CONSTITUTION:When a laminated unit of sheet material (p) rises by lifting a fork 2b, a belt unit 17 of a separator 15, coming into contact with a side surface of this laminated unit, is rotated. A sucker pad 4 is mounted to an air cylinder 30 in a sheet material supplier 1, sucking one sheet material (p) in the uppermost part, when it is lifted for a transfer feed, the sheet material (p) after the second sheet is brought into contact with the belt unit 17 and prevented from moving to the upper. The sucked one sheet material (p), while it is rubbed by a small protrusion of the belt unit 17, is removed, so that during this time, the second sheet material (p), adhering to the first sheet material (p), is separated, and the sheet material is fed sheet by sheet to a work device 3.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a method for gripping the topmost sheet of a stack of sheet materials such as corrugated paper, cardboard, synthetic resin board, plywood, etc. The present invention relates to a sheet-like material feeding device that has a separation function that can reliably convey the sheet-like material.

[Conventional technology]

For example, a corrugated box manufacturing device requires a corrugated paper supply device. Various types of devices are used for this feeding device, but it is a relatively small and simple device.
A pole is erected between the feeding device and the processing device, one end of the parallel link is supported on the ball, two or four suction pads are provided at the other end, and the parallel link is connected to the reciprocating direction of the cylinder device. There is one that can be made to rotate horizontally by movement.

The above-mentioned sheet-like material supply device brings a suction pad into contact with the topmost corrugated paperboard of a stack of corrugated paperboards conveyed by a carrier and sucks the paperboard paper, and then holds one sheet of corrugated paper in a horizontal state. The corrugated cardboard box is lifted up, and then the horizontal link is turned in the horizontal direction using a cylinder device, and the vacuum is cut off on the supply section of the corrugated box manufacturing apparatus and the corrugated box is dropped and supplied.

[Problem to be solved by the invention]

When sheet-like materials with relatively smooth surfaces and light weights, such as corrugated paper, are stacked closely together, when the top sheet is lifted, the next sheet-like material remains attached to it and rises. It turns out.

When a plurality of sheets, usually two sheets, are attached to each other and are fed to the next process, such as a corrugated box manufacturing equipment, the lower sheet may peel off during the transport. It may fall and cause trouble when operating the equipment. Further, even if the sheets do not fall during transportation, a plurality of sheets may be supplied to a sheet processing device such as a corrugated box manufacturing device, causing trouble.

The present invention solves the above-mentioned problem that a plurality of sheet-like objects are attached and transported, and the present invention is to solve the problem that a plurality of sheet-like objects adhere to each other and are transported. To provide a sheet-like material supply device that can reliably separate and transport the next sheet-like material without adhesion to the next sheet-like material when transporting the material.

[Means to solve the problem]

To achieve the above object, the sheet supply device according to the present invention is a device that transports the uppermost sheet of stacked sheets while suctioning and supporting the top surface of the sheet. A double-sheet prevention mechanism is provided on the front side to provide a separation force greater than the adhesion force between two sheet-like objects.

The double-sheet removal prevention mechanism includes: ■A device that removes a single sheet-like object that is attached by mechanically rubbing the side of the sheet-like object with a brush-like device; ■An ejector used for the suction pad. There are devices that have a structure that injects the exhaust gas into the ends of the sheet-like material, and (2) devices that use a member that mechanically hooks the sheet-like material.

■In addition, the mounting position of the double-sheet prevention mechanism is provided at the front part that substantially coincides with the line of the suction position, so that it can be installed with less force and without changing the holding state of the sheet-like object.
Can be stably separated and supplied.

[For production]

Even if another sheet-like object is attached to the sheet-like object adsorbed by the suction pad, the force to actively peel it off is applied to the sheet-like object by the double-sheet removal prevention mechanism, so that the stack of sheet-like objects can be separated easily. When lifting the sheet-like object from the top, the second sheet-like object attached to this sheet-like object can be reliably dropped.

〔Example〕

Next, the present invention will be described in detail with reference to the drawings.

FIGS. 1 and 2 are a schematic front view and a side view showing the relationship between a corrugated paper supply device equipped with a sheet transfer device according to an embodiment of the present invention and a processing device such as a corrugated box manufacturing device. be.

(3) is a sheet-like material transfer device, which in this example is configured to work in conjunction so that corrugated cardboard is vacuum-sucked one by one with a suction pad 4 and fed from a sheet-like material loading device 2 to a processing device 3. has been done.

In this embodiment, the front part of the sheet-like material p in the transport direction is adsorbed by the suction pad 4, the front part is slightly raised, and the rear part is dragged over the stack of sheet-like materials, such as a corrugated pole box manufacturing apparatus, etc. The material is supplied to the material supply section (magazine) of the processing device 3.

The sheet-like material supply device 1 is located between the sheet-like material loading device 2 and the processing device 3, and is composed of a transport frame 6 provided on a support 5, a suction pad 4 guided along this, etc. There is.

A slide rail 7 is provided on both sides of the conveyance frame 6, and a pulley 9 and a driven pulley 10 driven by a motor 8 are provided above the slide rail 7, and a timing belt 11 is installed between these pulleys 9 and 10. A suction pad 4 is attached to the shaft end of an air cylinder 30 on the timing belt 11 . It is configured to reciprocate along the transport frame 6 in accordance with the reciprocating rotational movement of the motor 8.

The sheet-like object loading device 2 is configured such that a fork 2b is guided so as to be vertically movable below a main frame 2a. One end of the chain 2e is connected to the hydraulic cylinder 2c, which goes around a sprocket 2d, and the other end of the chain 2e is connected to the frame of the fork 2b, so that it is moved up and down by the operation of the hydraulic cylinder 2c. Note that 2f is a power unit for generating oil pressure.

The sheet-like material p is loaded on a carrier 2g and transported,
This carrier 2g is accommodated as it is within the guide 2h.

In this state, the fork 2b is positioned below the sheet-like material P placed on the carrier 2g, and by driving the hydraulic cylinder 2c, the stack of sheet-like materials P is sequentially moved within the guide 2h. The fork 2b is configured to guide and rise, and the fork 2b gradually rises so that the top of the sheet-like object p reaches a certain position.

In this embodiment, the processing device 3 is a corrugated pole box manufacturing device, and is provided with a sheet receiving section 3a with sheet guides 3b set up at the four corners, and a sheet receiving device 3a that is conveyed by the sheet material supplying device 1. The sheet-like material p breaks the vacuum and falls, and is sequentially stacked on top of this.

Now, on the upper part of the main frame 2a of the sheet-like material loading device 2, a separating device 15 according to the present invention is provided.

As shown in FIGS. 3 to 5, the separation device 15 has a belt device 1 attached to a bracket 16 attached to the main frame 2a.
7 is installed. This belt device 17 has a side plate 18
．． Rollers 20, 21 are supported between rollers 19, and a belt 23 is stretched between these rollers 20,21. A friction plate 24 is interposed between one or both of the rollers 20 and the side plate 18, and the tightening of a nand 26 screwed onto the threaded portion of the shaft 25 reduces the braking force acting on the roller 20 to 11 depending on the condition. It is now possible to section.

As shown in FIG. 3, the side plates 18 and 19 have springs 27 arranged around the bolts so that the separating device 15 using a belt device is pressed against the side surface of the laminated sheet material P with a predetermined elastic force. It is configured so that it can be adjusted with a Nando 28.

The belt 23 is made of rubber or soft synthetic resin, and has many small protrusions 23a on its surface.
It is a band-shaped thing with a

The separation device 15 is pressed by a spring 27 so that at least the small protrusion 23a contacts the side surface of the sheet-like material P, and the stack of sheet-like material P is raised by the fork 2b in the direction of arrow U. Sometimes the friction force causes it to rotate. The resistance force accompanying this rotation can be adjusted by operating the nut 26 to press the friction plate 24 against the side surface of the roller 20.

Therefore, when the stack of sheet materials P rises due to the rise of the fork 2b, the heald device 17 in contact with the side surface of the stack rotates.

Then, when the suction pad 4 attached to the air cylinder 30 of the sheet supply device l adsorbs the topmost sheet P and ascends for transfer, the second and subsequent sheets are stacked. The sheet-like object p that is being moved comes into contact with the belt device 17 and is prevented from moving upward. However, one sheet-like object ρ adsorbed on the suction pad 4 is pulled out while its end is rubbed by the small protrusion 23a of the belt device 17, and during this time, the first sheet-like object p The second sheet-like material p that was attached will be separated.

In this way, the sheet-like objects p are accurately separated one by one from the stack of sheet-like objects p loaded on the sheet-like object stacking device 2 and are transferred to the processing device 3 side.

FIG. 6 is a sectional view showing essential parts of a second embodiment of the present invention.

An ejector body 32 is attached to the rond end 31 of the air cylinder 30.
is swingably supported by a pin 33, and a pad 34 (4) is attached to the lower end of the ejector body 32 by a washer 35 and a C-bin 36. The ejector nozzle 37 is arranged to cross the ejector body 32 and provide ventilation.
．． 38 is provided, and the nozzle 37 has an air hose 39,
Further, each nozzle 38 is provided with an exhaust pipe 40.

By supplying compressed air from the ejector nozzle 37 and discharging it from the ejector nozzle 38, the inside of the band 34 becomes vacuum and the sheet-like material p1 is adsorbed. At this time, if the next sheet-like material p2 is attached to this sheet-like material p, this compressed air A, which is the exhaust of the ejector, is injected onto the side surface of the sheet-like material p++PZ. Air A is a sheet-like material p++P! It will be sent in between and easily fall off.

7, 8 and 9 show a third embodiment, in which an inclined bottom plate 45 is placed on the bottom of a guide 2h placed on a carrier 2g, and It is loaded with sheet-like material p, and this sheet-like material p
are stacked diagonally with the extraction side facing up.

As shown in FIG. 9, a hook 47 is mounted on the mounting base 46 (or the main frame 2a) with its lower end supported by a pin 48, and a spring 49 is stretched between the extension portion 47a and the mounting base 46, and the hook 47 47 is configured to be pressed against the side surface of the laminated sheet material p. Said hook 47
The contact surface is provided with serrated protrusions 47b formed at intervals corresponding to the thickness of the sheet-like object, and furthermore, an extension portion 47c is formed on the upper part of this hook 47.

The sheet-like objects p stacked obliquely on the carrier 2g are lifted upward by a fork 2b (lifter) every time five upper sheet-like objects p are transferred to the edge processing device 3. Timing is given to raise the fork 2b while the sheet-like object p is being conveyed to the processing device 3 side, and during this conveyance, the sheet-like object p moves along the extension part 47c of the hook 47 in the conveying direction. The protrusion 47b is dragged and inclined as shown by the dotted line so that the protrusion 47b does not come into contact with the side surface of the sheet-like material p.

When the suction pad 4 suctions the uppermost sheet 1-like object P, the hook 47 is moved by the spring 49 as shown by the solid line.
The projections 47b come into contact with the side surfaces of the sheet-like material p. In this state, when the sheet-like object p2 is attracted to the suction pad 4 and the front part is lifted, the second sheet-like object p3 is attached to the protrusion 47 of the hook 47.
Since the movement is prevented by b, it is possible to prevent two sheet-like objects from being conveyed in a state in which they are attached to each other.

In addition, as shown in FIG. 8, by placing the sheet-like objects P obliquely using the inclined bottom plate 45, a shift is actively generated between the sheet-like objects 2, and the gap between the sheet-like objects 2 is This is advantageous in terms of releasing the adhesion and making it easier for the hook 47 to act on the side surface.

In the first embodiment, the double-sheet removal prevention mechanism is a device using a belt with small protrusions, in the second embodiment, an air jet device is used, and in the third embodiment, the mechanism is a device that pulls the side surface of the sheet-like object. It was a hook with a protrusion for hanging. In short, this double-sheet-taking prevention mechanism is a device that is installed on the front side in the conveying direction when the top surface of a sheet-like object is attracted and transported, and is stronger than the adhesion force between two sheet-like objects. It means a means of giving power.

It is preferable to install this double-sheet prevention mechanism in front of the suction point of the suction pad in the conveyance direction.By arranging it in this way, unnecessary rotational force is applied to the sheet-like object, and the sheet-like object is removed from the suction pad. It will not fall off or cause any trouble in the process.

[Effect of idea]

As described above, the present invention provides an apparatus for transporting stacked sheets while suctioning and supporting the top surface of the uppermost sheet. It is provided with a mechanism to prevent two sheets from being removed, which provides a resistance force greater than the adhesion force between the objects.

Therefore, even if multiple sheets are attached to each other on the sheet supply device, when the uppermost sheet is picked up and lifted, all but the first sheet are actively separated. Therefore, it is possible to prevent a plurality of sheets from being conveyed to the processing apparatus side or from being dropped during conveyance, thereby disrupting the processing process of the sheet-like article.

[Brief explanation of drawings]

The figures show an embodiment of the present invention, and FIG.
FIG. 2 is a side view of the same, FIG. 3 is a front view of the double-sheet-taking prevention mechanism, and FIG. 4 is a front view of the double-sheet-taking prevention mechanism. The side view and FIG. 5 are longitudinal sectional views of the central portion. FIG. 6 is a sectional view showing a main part of a double-sheet removal prevention mechanism using the ejector device according to the second embodiment. 7 to 9 show a third embodiment, in which FIG. 7 is a front view showing the schematic structure of a sheet-like material transfer device, and FIG. 8 is a carrier on which sheet-like materials are loaded diagonally. FIG. 9 is an explanatory view of the operating state of the hook, which is one of the mechanisms for preventing double-sheet removal. ■... Sheet-shaped material transfer device, 2... Sheet-shaped material loading device, 2a... Main frame, 2b... Fork, 2c... Hydraulic cylinder, 2
g...Carrier, 2h...Guide, 3...Processing device, 3a...Seat holder, 3b...
・Sheet guide, 4... Suction pad, 6... Conveyance frame, 7... Slide rail, 15... Separation device, 16... Bracket, 17...
- Heald device, 18. 19... Side plate, 23... Belt, 23a... Protrusion, 24... Friction plate, 25...
Shaft, 30... Air cylinder, 32... Ejector body, 34... Pad, 37.38... Ejector nozzle, 39... Air hose, 40... Exhaust pipe,
45... Inclined bottom plate, 46... Mounting base, 47... Hook, 47a... Extension part, 47b... Projection part, 47
c...Extension part, 48...Bin, 49...Spring.

Claims (1)

[Claims] In a device that transports stacked sheets while suctioning and supporting the top surface of the uppermost sheet, there is a separation force greater than the adhesion force between the two sheets on the front side of the suction part in the transport direction. A sheet-like material feeding device provided with a double-sheet-feeding prevention mechanism.