JP2002128358A - Corrugated board sheet cutting device in corrugated board manufacturing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate transshipping work at a stacker by cutting of corrugated board sheets fed from a carrying conveyor of a corrugated board manufacturing machine one by one in a lapped state based on an order change. SOLUTION: A multi-line conveyor is provided between a carrying conveyor and a discharge conveyor for corrugated board sheets cut in specified size by a cutting device to carry corrugated board sheets in a lapped state. A suction box is provided on the lower side of the multi-line conveyor, and in an upper surface of this suction box, suction holes for letting the corrugated board sheet sucked to the multi-line conveyor are opened.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for separating corrugated cardboard sheets in a corrugated cardboard manufacturing machine. The present invention relates to an apparatus for separating corrugated cardboard sheets sent out one by one from a conveyer in a wrapped state by changing the order, thereby facilitating transshipment work in a stacker. Is to try.

[0002]

2. Description of the Related Art As a device for separating a corrugated cardboard sheet in a corrugated cardboard manufacturing machine, as disclosed in Japanese Utility Model Publication No. 63-34912, a corrugated cardboard sheet of a predetermined length fed out at a higher speed than a cutting device in a corrugated cardboard machine is used. Transfer to a multi-row conveyor that has been slowed down from the feeding speed,
By moving the corrugated cardboard sheets in a lap shape on the multi-conveyor and moving forward, the stopper is raised from the multi-conveyor at the same time as the previous lot passes 3, and the front end of the corrugated cardboard sheet of the subsequent lot is pushed up to stop the progress, There is a method in which a subsequent lot is separated from a preceding lot.

Further, as in the invention of Japanese Patent Application Laid-Open No. Hei 3-2031, a corrugated cardboard sheet of a predetermined length fed out at a higher speed than a cutting device in a corrugated cardboard manufacturing machine is transferred to a multi-row conveyor slowed down from the payout speed. Lap the corrugated cardboard sheet on this multi-conveyor and advance it,
At the same time as the previous lot passes, a long supporting rod in the direction perpendicular to the traveling direction is exposed on the multi-conveyor, the rear lot is supported in a wrapped state, and the previous lot on the multi-conveyor is promptly removed from the multi-conveyor. There is a method in which a subsequent lot is separated from a preceding lot by moving the lot to a carry-out conveyor.

[0004] In the former separating device, the lowermost corrugated cardboard sheet may be damaged by pushing up a corrugated cardboard sheet of a later lot by a stopper. In the former and latter switching devices, when the corrugated cardboard sheet of the later lot is longer than the corrugated cardboard sheet of the former lot, the corrugated cardboard sheet of the later lot is cut off on the corrugated cardboard sheet of the preceding lot. As a result, one or a plurality of subsequent lots may be carried out together with the previous lot.

[0005]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an apparatus for separating a corrugated cardboard sheet without damaging the corrugated cardboard sheet or causing inaccurate separation.

[0006]

In order to achieve the above-mentioned object, the invention of claim 1 is to provide a cardboard sheet between a conveyor for transferring a cardboard sheet cut to a predetermined size by a cutting device and an unloading conveyor. A multi-strip conveyor is interposed between the multi-strip conveyors, and a suction box is provided below the multi-strip conveyor. A corrugated cardboard sheet traveling on the multi-strip conveyor is adsorbed to the multi-strip conveyor on the upper surface of the suction box. The opening of the intake hole for it is characterized.

[0007] The invention of claim 2 is to provide a first multi-conveyor and a second multi-conveyor for lapping and transporting corrugated cardboard sheets between a conveyer and an unloading conveyor for corrugated cardboard sheets cut to a predetermined size by a cutting device. A multi-conveyor is interposed, a suction box is provided below the first and second multi-conveyors, and a cardboard sheet traveling on the first and second multi-conveyors is provided on the upper surface of the suction box. And an intake hole for adsorbing to the second conveyor is opened.

In the separating device according to the first aspect, the corrugated cardboard sheet cut to a predetermined length by the cutting device is:
As shown in FIG. 3 (1), the vehicle is traveling from the transport conveyor at a lower speed than this and is transported onto the multi-conveyor in which the suction is operating to be in a wrap state, and is traveling at the same speed as the multi-conveyor. It is sent to the unloading conveyor.

When the rear end of the last corrugated cardboard sheet of the previous lot reaches between the multi-conveyor and the discharge conveyor, the discharge conveyor runs at a high speed, and as shown in FIG. The lot's corrugated sheet advances at high speed. Therefore, the corrugated paperboard sheet of the subsequent lot on the multi-row conveyor is separated from the preceding lot.

At this time, the cardboard sheet of the later lot is
Since the suction is sucked on the multi-strip conveyor by suction, the cut length of the subsequent lot is long, and even if it is covered on the corrugated cardboard sheet of the previous lot, it is prevented from being transferred to the unloading conveyor following the transfer of the previous lot Then, while being separated from the corrugated cardboard sheet of the previous lot, it is transferred in a wrapped state to the unloading conveyor returning to low-speed running.

In the separating device according to the second aspect, the corrugated cardboard sheet cut to a predetermined length by the cutting device is:
As shown in FIG. 4 (1), from the transport conveyor, it is conveyed onto the first multi-conveyor traveling at a lower speed and the suction is in operation to be in a wrap state, and at the same speed as the first multi-conveyor. While traveling and maintaining the wrapping state on the second multi-conveyor on which the suction is operating, it is sent to an unloading conveyor which travels at the same speed.

When the rear end of the corrugated cardboard sheet of the preceding lot passes between the first and second multi-conveyors, the second multi-conveyor and the discharge conveyor run at high speed, and The corrugated paper of the previous lot is sucked onto the conveyor by suction, and is immediately sent to the unloading conveyor without slipping. Therefore, as shown in FIG. 4 (2), the corrugated paperboard sheet of the subsequent lot on the first multi-row conveyor is cut off from the corrugated paperboard of the previous lot.

At this time, the cardboard sheet of the later lot is
Because the suction is performed on the first multi-conveyor by suction, the cut length of the subsequent lot is long, and even if it covers the corrugated cardboard sheet of the previous lot, it is transferred to the second multi-conveyor following the transfer of the previous lot. In a state separated from the corrugated cardboard sheet of the previous lot, the sheet is transferred in a wrapped state to the second multi-row conveyor and the unloading conveyor that have returned to low-speed running.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to FIGS. FIG. 1 is a plan view of the apparatus, and FIG.
Is a longitudinal side view of the same. FIG. 3 is an explanatory diagram showing a state in which the cardboard sheet is separated by the present apparatus.

In the above figures, reference numeral 1 denotes a conveyor for feeding out a corrugated cardboard sheet 2 cut to a predetermined size from a cutting device (not shown) in a corrugated cardboard manufacturing machine.
This conveyor 1 is synchronized with a corrugated board manufacturing machine, and
It runs at a speed of 0 m / min to 400 m / min.

Reference numeral 3 denotes a multi-conveyor set in front of the conveyor 1, and a suction box 4 is provided below the multi-conveyor 3, and the suction boxes 4 are provided with suction holes 5 at intervals. Perforated, this is multi-row conveyor 3
Are opened between each belt. Reference numeral 6 denotes an unloading conveyor installed in front of the multi-row conveyor 4.

Reference numeral 7 denotes a drive motor of the multi-row conveyor 3,
Reference numeral 8 denotes a drive motor of the unloading conveyor 6. Reference numeral 9
Is a duct connected to the suction box 4 and connected to a suction pump (not shown). Code 10
Is a frame that supports the multi-row conveyor 3, the front end (outgoing end) of which is supported on the base, and the vertical drive air cylinder 11 installed on the base is connected to the rear end (inlet end) that can be raised and lowered. ing.

Reference numeral 12 denotes a pressing spring for the corrugated cardboard sheet 2 disposed above the multi-conveyor 4, whose upper end is fixed to the rotating shaft 13 and whose lower end corresponds to the wrapped corrugated cardboard sheet 2.

The driving motor 7 for the multi-row conveyor 3, the driving motor 8 for the unloading conveyor 6, and the suction box 5
The suction pump connected to, the air cylinder 11 for raising and lowering the frame 10 supporting the multi-row conveyor 3, and the driving source for the rotating shaft 13 of the holding spring 12 are all operated by electric signals.

Reference numeral 14 denotes a sensor for detecting the passage of the corrugated cardboard sheet 2, and reference numeral 15 denotes a peripheral speed meter for each conveyor 3.

In the above embodiment, the corrugated cardboard sheet 2 of the preceding lot A cut to a length of 800 mm from the conveyor 1 running at a speed of 300 m / min in synchronization with the manufacturing machine is shown in FIG. As shown, the holding spring 12
The forward jump and speed are controlled by
m / min, is sent to the multi-conveyor 3 traveling at a speed of 60 m / min, is sucked into the multi-conveyor 3 by suction, travels in a wrapped state, and is sent to the unloading conveyor 6 traveling at a speed of 60 m / min. (Not shown)
Is transferred to

The subsequent lot B due to the order change is sent from the conveyor 1 to the multi-row conveyor 3, and the rear end of the last corrugated cardboard sheet 2 in the previous lot A is
Is transferred to the unloading conveyor 6 from the
In response to commands from the passage detection sensor 14 and the rotational speed meter 15, the unloading conveyor 6 changes the speed to 150 m / min and the multi-conveyor 3 changes the speed to 6 m / min. Is quickly transferred from the unloading conveyor 6 to the stacker as shown in FIG. At this time, the corrugated paperboard sheet 2 of the subsequent lot B on the multi-conveyor 3 attempts to move forward together with the preceding lot A which vigorously moves forward, but is prevented from moving forward by the action of the suction.

On the other hand, since the corrugated paperboard sheet 2 of the lot B after being separated from the corrugated paperboard 2 of the previous lot A is overlapped on the multi-conveyor 3 in a dense wrap state, as shown in FIG. Then, the lifting / lowering drive air cylinder 11 operates to lower the rear end of the frame 10, that is, the carry-in end of the multi-row conveyor 3, and the cardboard sheet 2 is continuously fed from the carry-in conveyor 1 to the multi-row conveyor 3.

As described above, when the front lot A and the rear lot B are separated, the multi-row conveyor 3 and the unloading conveyor 6 return to the running speed of 60 m / min, and the rear lot B
The transfer in the wrapped state is continued, and the air cylinder 11 for ascending / descending drive is operated, so that the rear end of the frame 10 is raised, and FIG.
The state shown in (1) is obtained.

Next, a second embodiment of the present invention will be described in detail with reference to FIGS. FIG. 4 is a plan view of the present apparatus, and FIG. 5 is a vertical sectional side view of the same. FIG. 6 is an explanatory view showing a state in which the cardboard sheet is separated by the present apparatus.

In the above figures, reference numeral 21 denotes a conveyor for feeding out a corrugated cardboard sheet 22 cut to a predetermined size from a cutting device (not shown) in a corrugated cardboard manufacturing machine. The conveyor 21 runs at a speed of 150 m / min to 400 m / min in synchronization with a cardboard manufacturing machine.

Reference numerals 23 and 24 denote a first multi-conveyor and a second multi-conveyor installed in front of the conveyor 21. A suction box 25 is provided below the first and second multi-conveyors 23 and 24. , 26, and suction holes 27, 28 are formed in the suction boxes 25, 26 at intervals, and are opened between the belts in the first and second multi-row conveyors 23, 24. . Reference numeral 29 denotes an unloading conveyor set in front of the second multi-row conveyor 24.

Reference numeral 30 denotes a driving motor for the first multi-conveyor 23, 31 denotes a driving motor for the second multi-conveyor 24, and 32 denotes a driving motor for the unloading conveyor 29.
Reference numeral 33 denotes a duct connected to the suction box 25, which is connected to a suction pump (not shown). Reference numeral 34 denotes a duct connected to the suction box 26, which is connected to a suction pump (not shown). Reference numeral 35 denotes a frame that supports the first and second multi-row conveyors 23 and 24. The front end (export end) of the frame is supported on a base, and the rear end (load end) that can move up and down.
Is connected to an air cylinder 36 for driving up and down.

Reference numeral 37 denotes a first and second multi-row conveyor 23,
A pressing spring for the corrugated cardboard sheet 22 disposed above the top 24, the upper end of which is fixed to the rotating shaft 38, and the lower end of which corresponds to the wrapped corrugated cardboard sheet 22.

The driving motor 30 for the first multi-row conveyor 23, the driving motor 24 for the second multi-row conveyor 24, the driving motor 32 for the unloading conveyor 29, the suction pump connected to the suction boxes 25 and 26, the first multi-row conveyor, 3 supporting frame 23 and second multi-row conveyor 24
5 lifting air cylinder 36 and holding spring 37
The driving sources of the rotating shaft 38 are all operated by electric signals.

Reference numeral 39 denotes a sensor for detecting the passage of the ball ball sheet 22, and reference numeral 40 denotes the multi-row conveyors 23 and 24.
Is a rotation peripheral speedometer.

In the above embodiment, the conveyor 21 which travels at a speed of 300 m / min in synchronization with the manufacturing machine.
As shown in FIG. 4A, the corrugated paperboard sheet 22 of the preceding lot A, which has been cut to a length of 2 m from the front, is controlled to protrude forward by a pressing spring 37 and has a speed of 60 m.
/ M is fed into the first and second multi-conveyors 23 and 24 which run at a speed of / min, and travels in a wrapped state while being sucked by the first and second multi-conveyors 23 and 24 by suction. It is sent to a stacker (not shown) from an unloading conveyor 29 running at a speed.

The corrugated cardboard sheet 22 of the subsequent lot B due to the order change is sent from the conveyor 21 to the first multi-conveyor 23, and the rear end of the last corrugated cardboard sheet 22 of the previous lot A is transferred from the first multi-conveyor 23 to the first multi-conveyor 23. When the sheet is transferred to the second multi-conveyor 24, the second multi-conveyor 24 and the unloading conveyor 29 become 15
At a speed of 0 m / min, the first multi-row conveyor 23 is 6 m / min.
As shown in FIG. 4B, the corrugated paperboard sheet 22 of the previous lot A is quickly sent from the second multi-conveyor 24 to the carry-out conveyor 29 in the wrapped state, and transferred to the stacker. You.

At this time, the corrugated cardboard sheet 22 of the subsequent lot B on the first multi-conveyor 23 attempts to move forward together with the preceding lot A which vigorously advances, but due to the suction action of the first multi-conveyor, the second corrugated sheet 22 acts. The advance to the multi-row conveyor 24 is prevented.

On the other hand, the corrugated paperboard sheet 22 of the lot B after being separated from the corrugated paperboard sheet 22 of the preceding lot A is overlapped on the first multi-conveyor 23 in a densely wrapped state, as shown in FIG. As described above, the lifting / lowering drive air cylinder 36 operates to move down the rear end of the frame 35, that is, the carry-in end of the first multi-row conveyor 23, and the cardboard sheet 22 from the carry-in conveyor 1 is fed without interruption.

When the preceding lot A is separated from the following lot B by the above operation, the first and second multi-row conveyors 23, 2
4, and the unloading conveyor 29 returns to the running speed of 60 m / min, and the transfer of the subsequent lot B in the wrapped state is continued,
The lifting drive air cylinder 36 operates to raise the rear end of the frame 35, and the state shown in FIG.

In a manufacturing machine for producing a long corrugated cardboard sheet having a length of 5 m, a suction box is further provided between the second multi-conveyor 24 and the unloading conveyor 29 in the embodiment of the second aspect. In some cases, third and fourth multi-conveyors are provided.

In the above-described embodiment, the suction holes of the suction box are opened between the belts of the multi-conveyor. However, the suction holes or the intake slits are provided at lower positions of the belts. In some cases, through holes may be formed in the belt at intervals in accordance with the above.

[0039]

The apparatus for separating a corrugated cardboard sheet in a corrugated cardboard manufacturing machine according to the present invention is embodied in the form described above, and has the following effects.

According to the present invention, a suction box is provided on a multi-strip conveyor interposed between a conveyor and an unloading conveyor, and an intake hole for holding a corrugated cardboard sheet on the multi-strip conveyor is opened on the upper surface of the suction box. Therefore, the subsequent lot can be accurately separated from the previous lot by the suction force. Therefore, the work of transshipping the corrugated cardboard sheets by the stacker can be easily performed.

Further, in the present invention, since the lot to be separated is sucked on the multi-strip conveyor, unlike the conventional method in which the lot is separated by a special mechanism, the cardboard sheet is not broken. . Further, as in recent years, it is possible to sufficiently adapt to a corrugated board manufacturing machine having a high production speed.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment of the present invention.

FIG. 2 is a vertical sectional side view of the same.

FIG. 3 is an explanatory diagram of the same.

FIG. 4 is a plan view showing an embodiment of the invention of claim 2;

FIG. 5 is a vertical sectional side view of the same.

FIG. 6 is an explanatory diagram of the above.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Conveyor 2 Corrugated cardboard 3 Multi-conveyor 4 Suction box 5 Intake hole 6 Unloading conveyor A Previous lot B After lot 21 Conveyor 22 Corrugated cardboard sheet 23 First multi-conveyor 24 Second multi-conveyor 25, 26 Suction box 27, 28 Intake hole 29 Carry-out conveyor

Claims (2)

[Claims] 1. A cardboard sheet, which has been cut to a predetermined size by a cutting device, is provided between a conveyor and an unloading conveyor.
A multi-strip conveyor for stacking and transporting the corrugated cardboard sheets in a lap is interposed, a suction box is provided below the multi-strip conveyor, and an intake hole on the upper surface of the suction box for adsorbing the corrugated cardboard sheets to the multi-strip conveyor. A corrugated cardboard sheet separating apparatus in a corrugated cardboard manufacturing machine, characterized in that a corrugated paperboard is opened. 2. A method according to claim 1, wherein the corrugated cardboard sheet is cut into a predetermined size by a cutting device, and is conveyed between a conveyer and an unloading conveyor.
A first multi-conveyor and a second multi-conveyor for stacking and conveying corrugated cardboard sheets in a wrap shape are interposed therebetween, and a suction box is provided below the first and second multi-conveyors, and an upper surface of the suction box is provided. An apparatus for separating a corrugated cardboard sheet in a corrugated cardboard manufacturing machine, characterized in that an intake hole for adsorbing the corrugated cardboard sheet to the first and second multi-row conveyors is opened.