JPS5924054B2 - Reversing and stacking equipment for sheet-shaped corrugated cardboard materials - Google Patents

Description

Detailed Description of the Invention The present invention is a method for dividing sheet-like corrugated paperboard produced and cut by a corrugated paperboard manufacturing machine into a specified number of sheets into groups, inverting every other group, and automatically placing them on a pallet. This invention relates to a device for stacking.

Sheet-like corrugated paperboard may warp due to uneven moisture content in the base paper, improper heating during drying, improper tensile force when running in a continuous form, and various other causes. The reality is that it is put away.

Various measures have been taken to prevent this, but it is difficult to completely eliminate it, and even if paperboard is made that does not curve for the time being, it often ends up warping over time. . As a simple countermeasure against this problem, a method has been widely known in which the warp is corrected by alternately inverting and stacking a certain number of sheets and using their own weight. Various types of reversing machines had been devised for this purpose, but none were perfect, and for this reason, the applicant first developed the
A reversing machine described in Japanese Patent No. 25977 was devised. This reversing machine has a structure that holds and inverts the group of laminated sheets with a presser pad installed at the top of the machine, making it possible to stack narrow sheets when working with a conventional reversing machine. This succeeded in preventing the disorder of the lamination that often occurs when In the present invention, in order to further demonstrate the good performance of the reversing machine,
In front of the machine, cut sheet materials are received, individual sheet materials are temporarily stored, stacked into a specified number of sheets, and temporarily stored as a group of laminated sheets.After passing through the machine, the laminated sheet groups are alternately placed on a pallet. We have invented a device that automatically performs the process from cutting to stacking on a pallet, without the need for human power, by using a series of devices to stack items face-to-face.

To explain the apparatus of the present invention using a diagram, from the left side of the diagram, a band-shaped cardboard paper 17 cut to a predetermined width is cut to a predetermined length by a flying shear machine 0, and is thrown out from the machine. It will be done.

The take-up conveyor 1 consists of upper and lower belt conveyors, and is characterized by a structure in which both belts have a wide opening on the entrance side in order to grasp the sheet-like corrugated paperboard 15 between both belts without failing. shall be.

The sheet-shaped corrugated paperboards 15 sent out from the take-up belt conveyor 1 are fed onto the first conveyor 2 so as to overlap as shown in the figure. At this time, if the vacuum suction holes are placed opposite to the front edge of the belt conveyor 1 from below and suction is performed, the tail end of the sheet material will be suctioned by the suction hole just before it is transferred to the conveyor 2, and it will be lined up more orderly. Become transported. The speed of the conveyor 2 is as follows:
It is about half of that of . Since the gate 3 is initially open, the sheet material 15 is sent to the second conveyor by the gate roll 4. At this time, the position of the second gate 6 is adjusted by moving on the second conveyor 5 according to the length of the sheet material 15, and at this time, the second gate 6 is closed and the leading ends of the flowing sheets 15 are aligned. When the stacked sheet number detector 7 detects that a specified number of sheets have been stacked, the first gate 3 is closed in response to the signal, and the gate roll 4 is stopped. If there is a sheet 15 passing through at that time, it is stopped while being sandwiched between the first gate rolls 4 as shown in the figure. At this time the first
The conveyor 2 does not stop, so the sheets 15 overlap near the first gate 3, but the second
I have a conveyor. By opening the second gate 6, the second
The laminated sheet group 16 stacked on the conveyor 5 is transferred to a reversing machine 9
passes through and gets on the inclined conveyor 11. While the conveyor 16 adjusts its unloading height to the stacking height of the cardboard materials on the pallet 17, its progress is temporarily stopped by the third gate 13, and when the gate 13 is opened, the cardboard materials are stacked on the pallet 17.

During the above process, the laminated sheet group 16 stacked by the specified number on the second conveyor 5 is detected by the passage completion detector 10 of the reversing machine 9.
Waiting for the opening of the second knot 6 by the signal of The laminated sheet group 16 stacked on the barret 17 is turned upside down, and if necessary, the stacked sheets are further stacked at slightly different positions in the lengthwise direction. By repeating this operation, the laminated sheet group 16 is stacked up alternately, front and back, in staggered rows if necessary. The operations of the first gate 3 and the second gate 6 are coordinated so that the sheet material 15 and the stacked sheet material group 16 are not sent to the next stage until the reversing machine 9 is ready for gripping. When a defective sheet material occurs on the second conveyor 5, the leading end of the sheet material is lowered to the lower blade in the cylinder as shown in the figure, and the feeding direction is reversed.
Defective sheet materials can be sent to the removal conveyor 8.
The terminal end of the slope conveyor 11 detects the upper surface of the sheet on the pallet 17 and the flow surface of the conveyor reaches the laminated sheet material group 1.
Adjust the height so that it is at the optimal position for sending out step 6. Note that the reversing machine has an upper belt conveyor and a lower belt conveyor disposed opposite each other, and these belt conveyors are rotatably supported around the center in the longitudinal direction, and these belt conveyors are are supported so that the vertical distance between them can be adjusted.

Then, the distance between the upper belt conveyor 1 and the lower belt conveyor 1 is adjusted for each pass, and the upper belt conveyor 1 and the lower belt conveyor 1 are connected to a group of sheet-like step holes based on the output signal of the gripping completion detector. It constitutes a vertical reversing machine that inverts the material with the material sandwiched between them. In the above-mentioned series of devices, special consideration has been given to the following features.

1) First gate 3, second gate 6, and second conveyor 5
Due to this, until then, the sheets 1, which were separated into individual sheets,
5 was made into a group of laminated sheets 16 with a specified number of sheets.

2) The force on the upper surface of the gate roll 4 is equal to 2 to 3 sheets of sheet material 15 than the belt surface of the first conveyor 2, and the size is 10 to 15 m77! The relationship between the sheet material held high and sandwiched between the first gate 3 and gate roll 4 and the sheet material on the conveyor 2, which is being pushed forward by the first conveyor 2 without stopping, is that the sheet material The structure must be able to be carried out smoothly without damaging the surface.

3) The presser part of the reversing machine 9 guides the narrow sheet material so that it can work freely and efficiently, and prevents the sheet material from being disturbed.

4) When the first gate 3 and the second gate 6 are opened and the reversing operation is not performed, the sheet materials can be stacked on the pallet while maintaining the posture of the sheet materials on the first conveyor 1.

With these features, it is a much more convenient device compared to conventional devices, and has great benefits in terms of labor savings and improved product quality.

In addition, especially in the present invention, the vertical reversing machine can handle all sorted tanpol materials that are less than the length of the belt conveyor, and even if the length of the cardboard sheet changes, it can be adjusted to suit the sheet each time. There is no need to adjust the machine.

Furthermore, the belt conveyor is rotated around the center (
Since it rotates on its own axis, it has the advantage of requiring a small turning radius. Also, since it is flipped vertically,
It is possible to correct warpage in a sheet-like cardboard material over a wider range than when horizontally inverting the material.

[Brief explanation of the drawing]

The figure shows the configuration of the inventive device line. 1... Pick up belt conveyor, 2...
1st conveyor, 3... 1st gate, 4...
・・Gate roll, 5・・・Second conveyor, 6・
... Second gate, 7 ... Stacked sheet number detector, 8 ... Defective sheet material removal conveyor, 9 ...
... Reversing machine, 10 ... Passing completion detector, 1
1... Inclined conveyor, 12... Grip completion detector, 13... Third gate, 14...
... Palette, 15 ... Sheet-like corrugated paperboard, 16 ... Laminated sheet material group.

Claims (1)

[Claims] 1. A device that automatically stacks sheet-like corrugated cardboard materials continuously produced by a corrugated paperboard manufacturing machine into groups of a predetermined number of sheets, and alternately stacks the upside-down groups and the intact groups, (a) A take-off belt that is installed following the length cutting machine and consists of a pair of upper and lower belt conveyors, with the interval near the entrance of both belts of the upper and lower belt conveyors being wide and narrowing from the center. (b) a first conveyor provided subsequent to the take-off belt conveyor and whose belt is driven at a lower speed than the take-off belt conveyor; (c) a second conveyor provided at the outlet of the first conveyor; (d) a first gate device consisting of a first gate and a gate roll whose opening and closing are controlled by the output signal of the detector; (e) a detector for the number of stacked sheet materials on the second conveyor; and a second gate that aligns the edges of the stacked sheet materials and opens at the required time; a second gate device whose installation position can be changed according to the length of the sheet material on the second conveyor; (f) upper and lower belt conveyors are arranged oppositely, and these conveyor belts are aligned in the length direction; The sheet material is rotatably supported around the central part of the belt, and the interval between the upper and lower belt conveyors can be controlled to be wider or narrower, and the interval between the upper and lower belt conveyors is narrowed for every other group of sheet materials, and according to the signal from the gripping completion detector, A vertical reversing machine configured to integrally reverse the upper and lower conveyors; (g) A group of corrugated cardboard sheets sent out from the vertical reversing machine is fed, and the sending height is changed to correspond to the stacking height of the next process. Inclined conveyor, which allows (
h) An inverting and stacking device for sheet-like corrugated cardboard, comprising a series of pallets that receive a group of sheet materials from the inclined conveyor up to a predetermined height.