JPH06183611A - Paper feeding machine - Google Patents

Abstract

PURPOSE:To feed stacked sheets in the condition in which the top face of the sheet faces upward or in the condition in which the top face faces downward in a paper feeding machine which conveys stacked sheets continuously. CONSTITUTION:A turn base 6 is provided on a tilt base 3 which can turn freely around a shaft 4. A feed conveyor 16 and a pair of sheet receiving devices 21a, 21b whose end is connected to the feed conveyor 16 are provided on the turn base 6. The conveyance face of the feed conveyor 16 is roughly vertical, and the sheets (a) stacked on the sheet receiving device 21a which is positioned at its lower end is fed in. Sheet is in the vertical condition with the feed conveyor 16 in the horizontal condition due to turn around the shaft 4 of the tilt base 3. After the turn base 6 is rotated by 180 degrees, the sheet receiving device 21a is fallen down, or the sheet receiving device 21b is fallen down without rotating the turn base 6 to convey the sheets (a) forward.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper feeder for continuously feeding thick paperboard such as corrugated cardboard sheets one by one to a sheet processing machine such as a printing machine.

[0002]

2. Description of the Related Art In general, a large number of corrugated cardboard sheets manufactured by a corrugator are stacked with a front liner facing down. The stacked sheets are then set in a paper feeder, and by operation of the paper feeder, the stacked sheets are continuously fed to the hopper of a sheet processing machine such as a printing machine one by one or several sheets as one block.

As the above-mentioned paper feeder, the one shown in FIGS. 10 to 12 has been conventionally known.

FIG. 10 shows a paper feeder described in Japanese Patent Laid-Open No. 63-22437. This paper feeder has a reversing device 60 which reverses the stacked sheets a by about 90 ° and sequentially sends the sheets a onto a next conveyor device 80.

The reversing device 60 includes a large number of ball casters 6.
1. A sheet receiving device 63 in which a plurality of base plates 62 each having No. 1 are provided in parallel, a double-row belt conveyor 64, and a kicker 6
The feeding conveyor device 66 is composed of 5 and two supports 67 swinging around the lower end.

As shown in FIG. 10A, the stacked sheet a placed on the sheet receiving device 63 is
As shown in (b), the direction of the reversing device 60 is reversed by 90 ° due to the tilting of the reversing device 60, and the kicker 65 is moved to a position where it abuts against the stopper 68 to form a forward leaning shape. By the evacuation from the transfer surface and the operation of the feeding conveyor device 66, the sheets are sequentially sent out onto the next conveyor 80 with the front liner facing upward.

FIG. 11 shows a paper feeder described in Japanese Patent Publication No. 50-14019. In this paper feeding device, the feeding conveyor device 66 of the reversing device 60 is configured to have a plurality of belt conveyors 69 arranged in the left-right direction at equal intervals in a plurality of rows in the sheet transfer direction.

In the above-mentioned sheet feeder, as shown in FIG. 11A, the stacked sheets a are placed on the sheet receiving device 63, and the reversing device 60 is tilted by 90 ° or more.
As shown in (b), the feeding conveyor device 66 is inclined forward and downward, and the belt conveyors 6 arranged in the sheet transfer direction are arranged.
9 is sequentially driven with a time difference from the belt conveyor 69 on the front side so that the stacked sheet a is sent to the next conveyor 80 in a shogi form. In this case, sheet a
Are transported with the front liner facing up.

FIG. 12 shows a paper feeder described in Japanese Patent Publication No. 58-56694. Reversing device 60 of this paper feeder
Is composed of a sheet receiving device 63 and a feeding conveyor device 66 composed of a belt conveyor, and a delivery conveyor 70 is provided between the feeding conveyor device 66 of the reversing device 60 inverted by about 90 ° and the next conveyor 80. There is.

In the paper feeder, as shown in FIG. 12 (b), the feeding conveyor device 66 is tilted forward by the tilting of the reversing device 60 by about 90 °, and is supported by the feeding conveyor device 66. The stacked sheets a thus stacked are conveyed forward by a predetermined stroke by the movement of the kicker 65, and a predetermined number of sheets a are transferred onto the transfer conveyor 70.
When the sheet is placed, the transfer conveyor 70 is swung upward so that a predetermined number of sheets a are laid down so that the front surface of the sheet a faces upward, and the sheet a is sent to the next conveyor 80.

In this case, the sheet a is transported with the front liner facing downward.

By the way, in any of the above-mentioned paper feeders, since the front liner of the corrugated cardboard sheet is fed upward or downward, the following problems occur.

That is, as a printing apparatus for printing the front liner of the corrugated board sheet, there are an upper surface printing machine having a plate cylinder on an impression cylinder and a lower surface printing machine having a plate cylinder below the impression cylinder.

Therefore, when the corrugated sheet is fed to the lower surface printing machine by using the paper feeder shown in FIGS. 10 and 11, the piled sheets manufactured by the corrugator and stacked with the front liner facing downward are left as they are. In this state, the sheet cannot be placed on the sheet receiving device 63 of the reversing device 60, and it becomes necessary to set the sheet receiving device 63 upside down.

Although there is no problem as described above in the single pass printing using the top surface printing machine, since the corrugated board sheets after printing are stacked with the printing surface facing upward, the top surface printing machine is used to print on the printing surface. When attempting to print again, in this case as well, it becomes necessary to reverse the piled piled sheets after printing in the same manner as described above and set them upside down in the sheet receiving device.

On the other hand, when a corrugated board sheet is fed to the upper surface printing machine by using the sheet feeder shown in FIG. 12, it is necessary to turn the piled sheets upside down and place them on the sheet receiving device, as described above. When printing is performed twice using the lower surface printing machine, it is necessary to reverse the piled sheets that have been printed once and set them upside down in the sheet receiving device.

[0017]

DISCLOSURE OF THE INVENTION The present invention solves the above problems and sends out piled sheets such as piled cardboard sheets with the upper surface in the stacked state as it is or with the top and bottom reversed. It is a technical issue to provide a paper feeding machine that can do this.

[0018]

In order to solve the above-mentioned problems, in the present invention, a sheet receiving device for receiving stacked sheets in a horizontal state, and a feeding conveyor device arranged substantially vertically to this sheet receiving device. The sheet receiving device and the feeding conveyor device are tilted so that the side surface of the stacked sheet supported by the sheet receiving device is supported by the feeding surface of the feeding conveyor device, and the sheets are sequentially fed to the next conveyor device. In the paper feeding device, the sheet receiving device is supported so as to be capable of undulating around an end on the feeding conveyor device side, and an undulating device for undulating the sheet receiving device is provided, and an axial center orthogonal to the feeding surface of the feeding conveyor device. A structure equipped with a turning device that turns both the sheet receiving device and the feeding conveyor device around It's adopted.

[0019]

In the paper feeder having the above construction, the piled sheets placed on the sheet receiving device are tilted by about 90 ° by the sheet receiving device and the feeding conveyor device so that the stacking sheet is moved to 9
The direction is changed by 0 °, the upper surface in the piled state is directed in the transfer direction, and the sheet on the front side is sequentially conveyed to the conveyor device on the front side by the operation of the feeding conveyor device.

When the upper surface of the sheet delivered to the front conveyor device is turned upside down, both the sheet receiving device and the delivery conveyor device are tilted by 90 °, and both devices are orthogonal to the delivery surface of the delivery conveyor device. The sheet is rotated 180 ° around the axis of rotation and is conveyed in order from the front sheet to the front conveyor device.

[0021]

Embodiments of the present invention will be described below with reference to the accompanying drawings.

As shown in FIGS. 1 to 3, a sheet feeding device according to the present invention includes a sheet reversing device A and a conveyor device B for conveying a sheet a sent from the sheet reversing device A to a sheet processing machine. It consists of and.

The sheet reversing device A has a machine base 1, and a tilting base 3 is provided between a pair of side frames 2 of the machine base 1. The tilting table 3 is rotatably supported about a horizontal shaft 4 supported by the side frame 2, and is rotated about the shaft 4 by the operation of two cylinders 5 as tilting devices.

A swivel base 6 is provided on the tilt base 3. The swivel base 6 has a rotating shaft 7 on its lower surface, and the rotating shaft 7
The flange 8 provided at the lower end of the tilting table 3 is inserted into a bearing tube 9 provided on the upper surface of the tilting table 3, and is rotatably supported by rollers 10 incorporated in the bearing tube 9. The swivel base 6 is rotatably supported by a plurality of rollers 11 provided around the bearing tube 9.

The swivel base 6 is swung by a swivel device 12. As the turning device 12, here, a gear 13 is provided on the rotating shaft 7, and a motor 14 supported by the tilting base 3 is provided.
A drive gear 15 that meshes with the gear 13 is attached to the rotary shaft of, and the swivel base 6 is rotated by the drive of the motor 14.

On the swivel base 6, a feeding conveyor device 16 is provided.
Is supported. The feeding conveyor device 16 is composed of a plurality of belt conveyors 17 arranged in a plurality of rows. Each belt conveyor 17 spans an endless belt 19 between a pair of pulleys 18a and 18b, and a motor 20 connected to one pulley 18b. The belt 19 is moved.

A first sheet receiving device 21a and a second sheet receiving device 21 are provided at both ends of the feeding conveyor device 16.
b is connected.

The first sheet receiving device 21a and the second sheet receiving device 21b are composed of a plurality of belt conveyors 22. Each belt conveyor 22 has a pair of pulleys 24a and 24b rotatably provided between both ends of a pair of conveyor frames 23, and an endless belt 25 is stretched between the pulleys 24a and 24b.

Of the pair of pulleys 24a and 24b, the pulley shaft 26 of one pulley 24b has movable bases 27a and 27b.
Is rotatably supported by a pair of support pieces 28 provided on the upper surface of the above, and a motor 29 for driving a belt conveyor is supported by one of the support pieces 28.

The plurality of belt conveyors 22 are rotatable about the pulley shaft 26 and are undulated by the operation of the undulating device 30. The undulating device 30 includes the other support piece 2
A motor 31 is attached to the motor 8, and a drive gear 32 attached to the rotary shaft of the motor 31 is fixed to one side of the conveyor frame 23 and meshes with a gear 33 rotatable with respect to the pulley shaft 26. The conveyor frame 23 is rotated around the pulley shaft 26.

Rollers 34 are rotatably provided on both sides of the movable bases 27a and 27b, and a pair of rails 35 for guiding the movement of the rollers 34 are mounted inside the swivel base 6. The rail 35 extends long in the moving direction of the sheet conveyed by the feeding conveyor device 16, and a pair of cylinders 36 that individually move the moving bases 27a and 27b along the rail 35 are mounted inside the swivel base 6. ing.

FIG. 4 shows an example of the use of the paper feeder having the above structure. In this usage example, the sheet a sent from the sheet reversing device A is transferred to the first conveyor device 40 and the second conveyor device 40.
It is supplied to the hopper 51 of the printing machine 50 via the conveyor device B composed of the conveyor device 41.

Here, the printing machine 50 sends the sheets a stacked in the hopper 51 forward one by one from the lower part by the movement of the kicker 52, and the sheets a are transferred to the impression cylinder 5.
When passing between 3 and the plate cylinder 54, printing is performed on the upper surface, and the printed sheets a are sequentially stacked with the printing surface facing up.

The sheet feeding operation when the printed sheet a is again supplied to the printing machine 50 and printing is performed again on the printing surface of the sheet a will be described with reference to FIGS.

In FIG. 4, the stacked sheets a after printing are taken out from the printing machine 50, and as shown in FIG. 5, they are conveyed by a conveying device 55 such as a roller conveyor and the sheet reversing device A of the sheet feeding device. It is transported to the installation position.

The printing surface of the sheet a, which is stopped before the sheet reversing device A, faces upward. The ∇ mark indicates the printing surface.

When the sheet a is fed, as shown in FIG. 5, the feeding surface of the feeding conveyor device 16 is placed in a substantially vertical state, and the first sheet receiving device 21a connected to the lower end of the feeding conveyor device 16 is connected. Keep the transport surface of the horizontal.

When each of the belt conveyors 22 of the first sheet receiving device 21a is driven to push the stacked sheets a on the conveying device 60 into the first sheet receiving device 21a, the stacked sheets a are The 1-sheet receiving device 21a is driven to convey the sheet toward the feeding conveyor device 16.

When the stacked sheets a come into contact with the conveying surface of the feeding conveyor device 16, the first sheet receiving device 21a stops. Further, the second sheet receiving device 21b at the solid line position in FIG. 5 rotates in the direction indicated by the arrow to press the upper surface of the sheet a placed on the first sheet receiving device 21a.

If the height of the piles of the stacked sheets a is low and the upper surface of the sheets a cannot be pressed only by the rotation of the second sheet receiving device 21b, the cylinder incorporated in the swivel base 6 will be described. By the operation of 36, the moving base 27b that supports the second sheet receiving device 21b is moved along the rail 35, and the second sheet receiving device 21b rotated 90 ° from the solid line position in FIG. 5 is lowered.

When the second sheet receiving device 21b presses the upper surface of the sheet a, the cylinder 5 shown in FIG. 5 operates to rotate the tilting base 3 about the shaft 4.

As shown in FIG. 6, when the conveying surface of the feeding conveyor device 16 is substantially horizontal and the sheet a is in the vertical state with the printing surface as the front surface, the cylinder 5 is stopped as shown in FIG. At the same time, the motor 14 operates to rotate the swivel base 180 °.

The printing surface of the sheet a is reversed by the rotation of the swivel base 6 by 180 °.

As shown in FIG. 7, the first sheet receiving device 2
When 1a faces the first conveyor device 40, the first sheet receiving device 21a falls toward the first conveyor device 40,
At the same time, the second sheet receiving device 21b tilts in the same direction as the first sheet receiving device 21a.

As the first sheet receiving device 21a and the second sheet receiving device 21b are tilted, the sheet a on the conveying surface of the feeding conveyor device 16 is in a forward tilted shogi-like shape, as shown in FIG. The print side is facing up.

As shown in FIG. 8, the first sheet receiving device 2
When 1a falls to a state in which it is positioned on the extension line of the first conveyor device 40 and stops, each of the feeding conveyor device 16 and the first sheet receiving device 21a operates, and the shogi-like sheet a is directed to the first conveyor device 40. To transport. The sheet a is conveyed by the operation of the first conveyor device 40 and the second conveyor device 41, and is transferred to the printing machine 50.
The hoppers 51 are stacked with the printing surface facing upward.

When all the sheets a have been sent out from the paper feeder, the second sheet receiving device 21b is rotated to a state substantially orthogonal to the conveying surface of the feeding conveyor device 16 and
As shown in FIG. 9, the tilting table 3 is moved by the operation of the cylinder 5.
Is rotated about the shaft 4, and the conveying surface of the payout conveyor device 16 is brought into a vertical state as shown by the chain line in the figure.

In the description of the operation of FIGS. 5 to 9, the sheet a is sent from the conveying device 55 onto the first sheet receiving device 21a with its upper surface (that is, the printed side) facing upward. When the upper surface of the sheet a is fed downward, in the state of FIG.
1b is laid down toward the first conveyor device 40 and at the same time
The sheet receiving device 21a is tilted in the same direction as the second sheet receiving device 21b so that the sheet a has a forward-moving shogi-like shape.

In the embodiment, the first sheet receiving device 21a and the second sheet receiving device 21b are connected to both ends of the feeding conveyor device 16 and each sheet receiving device 21a, 21b.
However, one of the sheet receiving devices may be omitted. In a paper feeder having one sheet receiving device, the stacked sheet a is received with the sheet receiving device being positioned at the lower end of the feeding conveyor device 16 in the vertical state.

The sheet receiving device may be composed of a belt conveyor as shown, or may be composed of a base plate having ball casters as shown in FIGS. 10 to 12.

This sheet receiving device may be comb-likely connected to the first conveyor device 40 arranged on the front side thereof.

Further, the feeding conveyor device 16 is shown in FIG.
13 and a combination of a belt conveyor 17 and a kicker as shown in FIG. 13, or a plurality of belt conveyors as shown in FIG.

When the feeding conveyor device 16 has a kicker, the kicker can be retracted below the feeding surface so as not to obstruct the feeding of the sheet.

[0054]

As described above, according to the present invention, both the feeding conveyor device and the sheet receiving device are rotatable about the axis perpendicular to the feeding surface of the feeding conveyor device, and the sheet receiving device is undulated. Since the sheets are freely arranged, the stacked sheets can be sent out with the upper surface in the stacked state facing upward or turned upside down.

[Brief description of drawings]

FIG. 1 is a vertical sectional front view showing an embodiment of a paper feeder according to the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a vertical side view of FIG.

FIG. 4 is a front view schematically showing an example of using the same paper feeder.

FIG. 5 is an explanatory diagram showing a paper feeding operation.

FIG. 6 is an explanatory diagram showing a paper feeding operation.

FIG. 7 is an explanatory diagram showing a paper feeding operation.

FIG. 8 is an explanatory diagram showing a paper feeding operation

FIG. 9 is an explanatory diagram showing a paper feeding operation.

FIG. 10A is a schematic view showing a conventional paper feeder, and FIG.
Is a schematic view showing the operating state

FIG. 11A is a schematic view showing a conventional paper feeder, and FIG.
Is a schematic view showing the operating state

FIG. 12A is a schematic view showing a conventional paper feeder, and FIG.
Is a schematic view showing the operating state

[Explanation of symbols]

 12 swivel device 16 delivery conveyor device 21a, 21b sheet receiving device

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yasuharu Mori 3-5-12 Hiranocho Chuo-ku, Osaka Rengo Co., Ltd. (72) Inventor Toshihiro Yoneda 3-5-12 Hiranocho Chuo-ku, Osaka No. Rengo Co., Ltd. Headquarters (72) Inventor Nobuhiro Ishii 2-15-28, Minejima, Nishiyodogawa-ku, Osaka City Hamada Printing Machinery Co., Ltd. No. 28 in Hamada Printing Machine Co., Ltd

Claims (1)

[Claims] 1. A sheet receiving device for receiving stacked sheets in a horizontal state, and a feeding conveyor device arranged substantially vertically to the sheet receiving device, and a side surface of the stacked sheet supported by the sheet receiving device is a feeding conveyor. In a sheet feeding device in which the sheet receiving device and the feeding conveyor device are tilted so as to be supported by the feeding surface of the device and the sheets are sequentially fed to the next conveyor device, the sheet receiving device is provided with the end portion on the feeding conveyor device side. A slewing device is provided which is supported undulatingly as a center and which oscillates the sheet receiving device, and swivels both the sheet receiving device and the feeding conveyor device about an axis orthogonal to the feeding surface of the feeding conveyor device. A paper feeder characterized by comprising.