JPH0651959B2 - Paper polisher - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper surface glossing device capable of high-speed polishing of a paper surface in a series of steps.

[0002]

2. Description of the Related Art A paper glossing device provided with a paper feeding device, a powder removing device, a coater device, a drying device and an endless device in series is known from Japanese Utility Model Publication No. 59-123200.

[0003]

However, since the above-described conventional paper polishing device has a limit in the processing speed of the endless device, even if the processing speed of other devices has a margin, the processing speed of the entire device is small. Can not be raised.

[0004]

SUMMARY OF THE INVENTION The present invention has been proposed in view of the above, and is a sheet feeding device for automatically supplying a sheet to be glossed, and a coater for applying a gloss paint to the sheet. Device, drying device for drying the applied gloss paint, branching device for vertically sorting the individual sheets sent from the drying device, endless belt for heating and pressing the coated surface of the sheet The press device provided in the above, and a stacker device that stacks and stores the sheets sent from the press device are provided in series.

[0005]

When the sheet feeding device automatically feeds the sheets to be glossed one by one, the coater device applies the glossing paint to the sheets. Then, the applied sheets of paper are dried by the drying device so that the gloss coating material is dried, and the sheets of paper sent from the drying device are sorted vertically by the branching device. The sheet distributed to the upper side is heated and pressed by the endless belt above the pressing device, while the sheet distributed to the lower side is heated and pressed by the endless belt below and each surface is subjected to a gloss treatment, The sheets sent from the press device are stacked and stored by the stacker device.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which endless belts of a press machine are provided in two upper and lower stages will be described below with reference to the drawings. Sheets 3 placed on the paper tray 2 of the paper feeder 1
Are automatically supplied to the powder removing device 4 one by one.

The powder removing device 4 has a pair of upper and lower brushing rolls, and removes the powder adhering to the front surface and the back surface of the sheet when the sheet passes between the brushing rolls. The powder removing device 4 has a vacuum inside and its exhaust port is connected to a dust collector (not shown) so that the removed powder is collected by the dust collector.

The sheet passing through the powder removing device 4 is
It is sent to the corona discharge treatment device 6 via the belt conveyor 5, and the wettability and adhesion of the surface are improved. Then, the sheet subjected to the corona discharge treatment is sent to the coater device 7.

The coater device 7 is for applying a lustrous paint to the lustrous surface of a sheet of paper.
Although there are formats such as a flexo coater, a roll coater, and a screen coater, they can be appropriately selected and used in the present invention. A coater device 7 shown in the drawing is a flexo coater device, and is provided with a synthetic resin-made glazing paint applying roll 8 and a receiving roll 9 so as to rotate in conjunction with each other.
A paint supply roll 10 made of a mesh roll is in contact with the paint application roll 8, and a paint storage roll 11 is in contact with the paint supply roll 10. Therefore, when the sheet supplied to the coater device 7 passes between the coating roll 8 and the receiving roll 9, the gloss coating is applied to an appropriate thickness. The sheet coated with the gloss paint is dried by the drying device 13 via the belt conveyor 12.
Sent to.

The drying device 13 is a device for drying and hardening the gloss coating applied by the coater device 7, and a type suitable for the applied gloss coating can be appropriately selected and used. Therefore, generally, a hot air and infrared drying device can be used, and when an ultraviolet curable resin is used for the glazing paint, an ultraviolet irradiation device is used. The ultraviolet curable resin has thermoplasticity. When such a thermoplastic UV curable resin is used, it becomes possible to perform the glazing process in a softened state by heating in the glazing process in the press device described later, and since the surface is highly advanced after the glazing process, scratches There is an advantage that it is difficult to attach.

A drying device 13 shown in the drawing is a general warm air infrared drying device, and a far infrared heater 15 and a pressure fan 16 are provided above an endless belt 14 stretched by each roll. The sheet sent from the coater device 7 is blown with warm air while being transferred to the endless belt 14 and passing under the far-infrared heater 15, whereby the gloss paint is dried in a stable state. Then, the sheets dried by the drying device 13 are alternately sorted one by one up and down by the branching device 17. A pressurizing / humidifying device (not shown) may be provided after the drying device 13 in order to supply appropriate moisture to the sheet dried by the drying device 13.

The branching device 17 is provided with the tip end of the endless belt 14 of the drying device 13 facing the end of the branching plate 1.
8 is supported by a rear end shaft 19, and the air cylinder 2 is mounted on the end of the shaft 19 through a known mechanical transmission mechanism such as a crank.
A drive source such as 0 is connected, the tip of the upper conveyor belt 21 faces the end of the branch plate 18 which is attached to the shaft, and the tip of the lower conveyor belt 22 faces below the branch plate 18. And the drying device 13
The drive source 20 is operated under the control of the control device 23 so that the sheet can be branched depending on the conveying speed of the sheet sent from. In the present embodiment, a detector 24 such as a photo sensor is provided upstream of the branching device 17, for example, near the rear end of the endless belt 14 of the drying device 13, in order to detect the sheet fed from the drying device 13. The detector 24 is connected to the control device 23, and a solenoid valve 25 which is operated by a signal from the control device 23 is provided in the air supply pipe 26 of the air cylinder 20.

For example, as shown in FIG. 2, when the detector 24 detects the leading edge of the sheet 3A and sends a signal to the control device 23, a timer (not shown) of the control device 23 is based on this signal. Solenoid valve 2
5 is energized to operate the air cylinder 20. When the air cylinder 20 operates and the rod extends, the branch plate 18 rotates about a shaft 19 via a crank mechanism or the like to raise the tip of the endless belt 14 as shown by the chain line in FIG. Between the rear end of the rear and the lower conveyor belt 22 (the branch plate 1
(Below 8). Therefore, the sheet 3A that has been conveyed by being placed on the endless belt 14 of the drying device 13
Rides on the lower conveyor belt 22 through the opening portion below the branch plate 18. The solenoid valve 25 has a predetermined time set by the timer (more than the time required for one sheet to pass through the lower opening of the branch plate 18 and shorter than the time until the next sheet arrives). The air cylinder 20 is operated by opening until the time elapses. Therefore, when the predetermined time of the timer elapses, the sheet 3
The rear end of A has passed through the opening and has finished riding on the lower conveyor belt 22. Then, when a predetermined time of the timer elapses, the energization of the solenoid valve 25 is stopped, which causes the branch plate 18 to return and rotate to close the opening as shown in FIG.

When the next sheet 3B arrives and the detector 24 detects the leading edge of this sheet 3B and sends a signal to the control device 23, the timer is started based on this signal, but the solenoid valve 25 is not energized. Therefore, the branch plate 18 maintains the state in which the opening to the lower conveyor belt 22 is closed. Therefore, the sheet 3 </ b> B placed on the endless belt 14 of the drying device 13 passes the branch plate 18 as it is, and is transferred onto the upper conveyance belt 21.

The branching device 17 sets the above operation as one cycle and thereafter repeats this cycle to alternately distribute the sheets 3C, 3D, ... Therefore, when the detector 24 detects the leading edge of the next coming sheet 3C and sends a signal to the control device 23, the timer is started based on this signal and the solenoid valve 25 is energized to energize the air cylinder. 25 is operated and the branch plate 18 is rotated about the shaft 19 to open the lower part of the branch plate 18. Therefore, the sheet 3C detected by the endless belt 14
Passes through the lower opening of the branch plate 18 and the lower conveyor belt 2
Move up to 2. Then, when a predetermined time of the timer has elapsed, the energization of the solenoid valve 25 is stopped, whereby the branch plate 18 returns and rotates to close the opening.

If the sheets 3 carried on the endless belt 14 of the drying device 13 are fed at a predetermined pitch, they can be sorted up and down by the above operation without any problem. It is possible that the trailing edge of the next sheet overlaps the trailing edge of the sheet. In such a case, the detector 24 detects the front edge of the front sheet and turns on,
Even if the trailing edge of the front sheet passes under the detector 24, the trailing sheets overlap each other, so that the detector 24 maintains the ON state even when the predetermined time of the timer elapses. . In this way, when the detector 24 detects the sheet even after the lapse of the predetermined time of the timer, the control device 23 determines that it is abnormal, lights up or blinks the warning lamp, or outputs an alarm. Is sounded to notify the staff of the abnormality. In this case, the entire apparatus can be stopped.

Incidentally, the control device 23 is constructed so as to control the operating speed of the glazing device so that it can be controlled by following the operating speed. It is adapted to change according to the operating speed of the device.

The sheet distributed on the lower conveyor belt 22 as described above is sent to the endless belt 28 arranged at the lower part of the pressing device 27 and placed on the upper conveyor belt 21. The sheet is sent to an endless belt 29 arranged above the pressing device 27. The upper transport belt 21 and the lower transport belt 22 have the same transport speed.

In the press device 27, a first endless stainless belt 28 is stretched on the lower part by a first heating roll 30 and a first roll 31, and the first heating roll 30 is also provided.
The first pressure roll 32 is provided below the second heating roll 33 and the second heating roll 34, and the second endless stainless belt 29 is stretched above the second heating roll 3.
A second pressure roller 35 is provided below the roller 3. First and second
Each of the heating rolls 30 and 33 is heated to a predetermined temperature range (for example, 120 to 140 degrees) by a heat source (for example, steam, an electric heater, etc.) housed inside and an automatic temperature controller, and this heat is heated to the endless stainless belt 28. , 29 to transfer heat.

Therefore, when the sheet conveyed by the lower conveyor belt 22 passes between the first endless stainless belt 28 and the first pressure roll 32, it is heated and pressurized at the same time. The mirror surface 28 polishes the coated surface. A water cooling nozzle 36 is provided inside the first endless stainless belt 28, and a first conveyor belt 37 that receives and conveys a sheet peeled from the belt 28 is provided below a rear portion of the first endless stainless belt 28. It is provided. Therefore,
The sheet naturally or forcibly peeled from the first endless stainless belt 28 is conveyed to the stacker device 38 by the first conveying belt 37.

Similarly, when the sheet conveyed by the upper conveying belt 21 passes between the second endless stainless belt 29 and the second pressure roll 35, the sheet is heated and simultaneously pressed, so that the second endless sheet is formed. The mirror surface of the stainless belt 29 polishes the coated surface. A water cooling nozzle 39 is also provided inside the second endless stainless belt 29, and below the rear part of the second endless stainless belt 29 is a second conveyor belt 40 that receives and conveys a sheet peeled from the belt 29. It is provided. Therefore, the sheet peeled off from the second endless stainless belt 29 is conveyed by the second conveyor belt 40 to the first conveyor belt 3.
7 is conveyed to the middle, and finally the first conveyor belt 37
Is conveyed to the stacker device 38.

The first endless stainless belt 2
8 and the second endless stainless belt 29 have the same rotation speed, and the sheets alternately distributed by the branching device 17 are alternately supplied to the first endless stainless belt 28 and the second endless stainless belt 29. Since the conveyance speeds of the first conveyor belt 37 and the second conveyor belt 40 are also set to be the same, the sheet to be transferred from the second conveyor belt 40 onto the first conveyor belt 37 is the first endless stainless belt. The sheets from 28 do not overlap.

The stacker device 38 includes the first conveyor belt 3
The sheets conveyed by 7 are stacked and stored at a predetermined position, and when a certain number of sheets are stored, they are discharged collectively.

The embodiment described above is the press device 2.
The endless belt 7 has two upper and lower stages, and the branching device 17 also distributes the sheet vertically according to this, but the present invention is not limited to this.
It suffices that the endless belt that is heated and pressed has multiple stages, and may have three stages, for example.

[0025]

As described above, according to the present invention, the sheet feeding device for automatically feeding the sheet to be polished, the powder removing device for removing the powder adhering to the sheet, and the sheet A coater device 7 for applying the coating paint, a drying device for drying the applied coating paint, a branching device for sorting the sheets sent from the drying device in different vertical directions,
Since a press device equipped with endless belts that heat and press the coated surface of the sheet in multiple stages, and a stacker device that stacks and stores the sheets sent from the press device are provided in series, the press device has multiple stages. Polishing treatment with an endless belt can be performed in parallel. Therefore, even if a press machine that cannot increase the processing speed due to the characteristics of the process is installed between the continuous processes, it is possible to sufficiently increase the processing speed of the entire device and perform efficient polishing. You can Further, according to the present invention, since the sheet is made to flow in multiple stages in the portion related to the press machine having a low processing speed, the installation area is small and the space efficiency is good despite the remarkable increase in the processing speed.

[Brief description of drawings]

FIG. 1 is a side view of a surface polisher.

FIG. 2 is a side view of a branching device.

FIG. 3 is a timing chart of a detector, a timer, and a solenoid valve.

[Explanation of symbols]

 1 Paper Feeding Device 3 Sheets 4 Powder Removing Device 7 Coater Device 13 Drying Device 17 Branching Device 18 Dividing Plate 20 Air Cylinder 23 Control Device 24 Detector 25 Solenoid Valve 27 Pressing Device 28, 29 Endless Belt 30, 33 Heating Roll 32 , 35 Pressure rolls 38 Stacker device

Claims (2)

[Claims] 1. From a paper feeding device for automatically supplying a sheet to be polished, a coater device for applying a gloss coating material to the sheet, a drying device for drying the coated gloss coating material, and a drying device. A branching device that sorts the delivered sheets one by one in different vertical directions, a press device that has an endless belt that heats and presses the coated surface of the sheet in multiple stages, and a sheet that is sent from the press device. A paper glossing device that is equipped with a stacker device that stacks and stores the stacks in series. 2. A sheet feeding device for automatically supplying a sheet to be polished, a coater device for coating the sheet with an ultraviolet curable resin as a lustering paint, and irradiating the coated ultraviolet curable resin with ultraviolet rays. Press equipped with a drying device equipped with an ultraviolet irradiation device, a branching device that sorts the sheets sent from the drying device into different vertical directions one by one, and an endless belt that heats and presses the coated surface of the sheet in multiple stages. Paper glossing device that is equipped with a stacker device that stacks and stores the sheets sent from the device and the press device in series.