JP2011213088A - Tailings disposer of corrugated box manufacturing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a new tailings disposer of a corrugated box manufacturing machine in lieu of the conventional type which adopts much power-consuming pneumatic conveyance system on account of advantages in the installation cost and installation work aspect, and further, which disadvantageously keeps a fan or a cutter blower operating constantly, even when tailings do not come out flowing or are in negligible volume, once the corrugated box manufacturing machine is set in operating mode, thus not contributing toward curtailing energy power and the discharge level of carbon dioxide, with regard to the conveyance of tailings on the corrugated box manufacturing line of the present corrugated board plant.SOLUTION: This tailings disposer of corrugated box manufacturing machine comprises a sensor 1 for detecting the tailings of the corrugated board which fall onto a variable speed conveyor 4 from the corrugated box manufacturing machine. In addition, the device has a variable speed volume reduction roll 5 which reduces the volume of the tailings of the corrugated board by compressing the tailings, and an inverter 2 for controlling the number of revolution of an electric motor housed inside a control panel 3.

Description

  The present invention relates to waste disposal of a box making machine.

  At the corrugated board manufacturing plant, corrugated board waste may be generated when processing corrugated board sheets with a box making machine. As shown in FIG. 2, the fan (7) for the air conditioner (8) provided under the box making machine. After being collected in one place by air conveyance by the crusher, it is crushed by a cut-table lower (9), and is conveyed by air through the duct (10) to the cyclone (11). Since the bulk specific gravity of the cardboard waste is small, the waste discharged from under the cyclone 11 is efficiently transported after being compressed by a hydraulically driven waste clamping machine (not shown), and is recycled into a paperboard base paper after being compressed. The fan 7 and the cuttable 9 are driven by an electric motor, and a person turns on and off the power switch when the box making machine is operated or stopped. Since the cutter blower 7 crushes the waste and carries it by air, the electric capacity of the motor is particularly large. On the other hand, the product has become smaller, and the actual processing time is not necessarily long because the frequency of exchanging stamps and punching dies of the box making machine is high, but it is troublesome to switch on and off each time, If the switch is forgotten to be turned on, it will become clogged with dust and it will be very difficult to recover. Therefore, there are cases where the fan 7 and the cut-out lower 9 are kept on and are continuously operated. There are usually as many waste transport lines as there are box making machines, and the power consumption of the cardboard factory accounts for a considerable proportion.

  At present, waste transport usually uses an air transport method that consumes a large amount of power, but it can be transported simply by pulling the duct, so it can be flexibly implemented, and it is relatively inexpensive, and the duct size and cuttable lower can be increased. Therefore, it is relatively easy to handle after a trouble. The air transport method basically consumes electric power, but before, the above-mentioned merits were prioritized, and it was not considered from the viewpoint of energy saving or reduction of environmental load. Recently, however, a 25% reduction in carbon dioxide emissions has been a proposition by FY2020, and the values have changed significantly and the priority has changed. It is a good idea to stop or use the air-conveying system that consumes multiple electric power as much as possible. The reduction of electric power not only saves energy and reduces carbon dioxide emissions, but also reduces contract electric power and electric power costs.

  In the waste storage (6), the volume of corrugated cardboard waste reduced by a mechanical device with low power consumption is controlled only when waste is generated, and the rotation speed of the drive motors of the conveyor 4 and the volume reduction roll 5 is controlled according to the load. to recover. A sensor 1 with a wide detection width is provided to detect cardboard waste falling on the conveyor 4 from the box making machine, and at the same time grasping the generation status of waste, the cardboard waste with a lot of space is compressed to about 1/5. A volume reduction roll 5 is provided to reduce the volume, while an inverter 2 is provided in the control panel 3 to control the number of rotations of the conveyor 4 and the motor of the volume reduction roll 5 by a load. Since the volume reduction roll 5 and later are various depending on the scale of the factory and the contents of work, they are described in the examples.

  Depending on the state of waste generation, the conveyor 4 and the volume reduction roll 5 can operate properly with the necessary power without consuming wasteful power by waiting or controlling the rotation speed with the inverter 2 in the control panel 3. Since it can be performed, the power consumption can be suppressed and energy saving can be achieved, and at the same time, the emission of carbon dioxide, which is a warming gas, can be reduced. Moreover, since the apparatus is simple and the conveyor 4 and the volume reduction roll can be easily cleaned and maintained, it is easy to introduce.

BEST MODE FOR CARRYING OUT THE INVENTION

FIG. 1 shows a conceptual diagram of a waste disposal system for a box making machine based on the present invention. Corrugated cardboard waste generated by a die cutter, a slotter or the like of a box making machine falls, enters a continuous electric conveyor 4 such as a belt conveyor, is sent to the drive side, enters a volume reduction roll 5, and enters waste storage 6 while being compressed. Waste falling on the conveyor 4 is detected by a sensor 1 having a width like an area sensor. The general operation state can be grasped from the detection frequency of the waste, and the signal is used for controlling the operation of the conveyor 4 and the volume reduction roll 5. That is, if the scrap detection frequency is low, it is determined that the processing is not performed, and a trial printing operation is performed. When a certain time elapses, the number of rotations of the motor is decreased, and when a further time elapses, the operation is stopped and waited.
After the trial printing operation, when the actual operation is started, the amount of waste increases. Therefore, the inverter 2 increases the rotation speed of the conveyor 4 and the volume reduction roll 5 to increase the processing amount.

  In the case of a small factory with one line of box making, for example, the compressed cardboard waste in the waste storage 6 is collected, transported by truck, transported to a paper mill, put into a pulper, and cardboard base paper To reuse.

  If there are multiple lines of boxes, for example, the corrugated cardboard waste that has been compressed by attaching wheels to the waste storage 6 is collected, crushed by a shredder (not shown), and collected by a cyclone via a duct by air conveyance. In order to further reduce the volume, the transport efficiency is increased, and the paper is transported to a paper mill where it is put into a pulper and reused for corrugated paper.

  If there are multiple boxes, for example, automate, instead of waste storage 6, collect cardboard waste compressed by a conveyor (not shown), automatically put into a shredder, and after crushing, collect by air transport via a duct and recovered by a cyclone. The volume is further reduced by a hydraulic waste crusher to increase the conveyance efficiency, and it is conveyed to a paper mill, put into a pulper, and reused as corrugated paper.

  The waste disposal apparatus according to the present invention performs fine control and tries to suppress the waste of electric power and the amount of carbon dioxide emission as much as possible. It is considered that the effect is large because the conventional power consumption is large.

  It is a conceptual diagram of Example 1 of the present invention.   It is a conventional conceptual diagram.

DESCRIPTION OF SYMBOLS 1 Sensor 2 Inverter 3 Control panel 4 Conveyor 5 Volume reduction roll 6 Waste storage 7 Fan 8 Air conditioner bear 9 Cutter blower 10 Duct 11 Cyclone

Claims (1)

  A sensor (1) is provided to detect cardboard waste falling on the variable speed conveyor (4) from the box making machine, and further, a variable speed reduction roll (5) for compressing and reducing the volume of the cardboard waste and the motor A scrap disposal device having an inverter (2) in a control panel (3) to control the rotational speed.

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