JPS5817022B2 - Cardboard case material processing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a processing machine for cardboard case material.

Thick paper materials such as cardboard sheets and cartons
There are various types of processing machines for manufacturing predetermined packaging cases from sheets (hereinafter referred to as sheets), but generally, as schematically shown in Figure 1, the laminated sheets 1 are sent out individually. Supply section A, printing section B equipped with a printing roller 2
, a marking section C where a scoring roller 3 is installed, and a notch section where a slitter roller 4 is installed.
0 and the sheet 1 discharged from the processing section 10, a folding section 2 that transports the sheet 1, which has come out from the processing section 10, toward the discharge section E while folding it into a box shape.
The movement of the folding section 20 of the sheet 1 that has passed through the processing section 10 is carried out between the processing section 10 and the discharge section E, where the folding section 20 of the sheet 1 is
This is done by a pair of endless belts 5,5.

As shown in FIG. 3, the sheet 1 that has passed through the processing section 10 is printed 8 on the side surfaces 6, 7, and 7 of the case.
are applied, and creases 9, 11.12 for bending are carved in the boundaries of the side parts 6, 7, and separation strings 1-15.15 of the top lid part 13 and the bottom lid part 14 are further formed. Then, it is sent out from the processing section 10 in the direction of the arrow.

In the folding portion 20, side portions 6, 6 at both ends
is transported while being bent downward.

The means for transporting the sheet 1 in this folding section 20 is as follows:
As shown in Figure 2, the side parts 6 at both ends of the sheet 1
. A large number of rollers 16, 16 are used to bend the sheet 1 so that the side portions 6, 6 at both ends of the sheet 1 are folded into the folding guide 1.
7 (known means such as roller rollers) to a bending position exceeding 90 degrees, and then the endless belt 5
, 5, and is transported on the guide 18 to the discharge section E.

However, in such a conventional folding section 20, the sheet 1 leaving the processing section 10 is held between the endless belts 5, 5 and the roller rollers 16, 16, and is transported along the guides 19, 19. Therefore, it has the advantage that the conveying action of the sheet 1 is carried out reliably, but depending on the position of the stamp 118, the processing unit 1
Immediately after exiting 0, the endless belts 5, 5 come into contact with a part of the undried print 8, staining one side of the sheet, or ink is transferred to the endless belts 5, 5, staining subsequent sheets. There is a problem with this.

Although this problem has been alleviated to some extent by using quick-drying printing inks, the above-mentioned problems occur more noticeably in humid conditions such as the rainy season or low-temperature seasons, or in slow-drying environments.

For this reason, even though the processing machine itself has a processing speed of 200 to 300 sheets per minute, the processing speed is significantly reduced to avoid the above-mentioned problems. The reality is that there are.

The present invention has been made in order to solve the above-mentioned problems without reducing the processing capacity of the processing machine itself, and as shown in FIGS. 1, a processing section 10 equipped with a supplying device section A that individually sends out 1, a printing section B, and the processing section 10.
and a folding section 20 between the processing section 10 and the discharge section E, and the folding section 20 is equipped with an endless belt 5 for press-contacting the upper surface of the sheet 1 coming out of the processing section 10 and transporting the sheet 1. In a folding machine that marks a sheet W, the starting end 21 of the endless belt 5 is separated from the processing section 10, and the processing is performed between the processing section 10 and the starting end 21 of the endless belt 5. Part 10
An opening part 2 where the stamp surface of the sheet 1 fed out is exposed.
Form 2.

A porous underbelt 23 is interposed below the conveying path of the sheet 1 in the open portion 22 to absorb and support the lower surface of the printed and fed sheet 1 and transfer it to the endless belt 5 for processing. After eight copies of the sheet 1 printed in the processing section 10 are completely dried in the open section 22, they are transferred by the endless belts 5, 5.

More specifically, a conventional endless belt 5.5 is used for moving the folding section 20 while pressing the sheet 1 that has been printed, ruled, and cut out from the processing section 10 from the upper surface thereof. The length is substantially shortened so that the sheet fed from the processing section 10 is placed between the starting end 21 of the endless belts 5, 5 and the processing section 10.
- forming an open section 22 having a space at least twice the total length of the sheet 1 where the printed surface of the sheet 1 is exposed; In place of the conventional roller roller 16, a porous underbelt T-23, 23 is installed under the transfer passage of the underbelt 23.
An air intake duct (not shown) communicating with an air intake source is provided from the back surface of the sheet 23, and the sheet 1 immediately after leaving the processing section 10 is sucked on the lower surface side thereof and transported to the endless belt 5, and the sheet 1 is transported to the endless belt 5 while Eight copies of the print on the sheet 1 are sufficiently dried in the open section 22.

As shown in FIG. 4, the above-mentioned underbelt 23 can be arranged with two guide rollers 24 and 24 on its underside to allow the belt 23 to run in a bent manner, thereby enlarging the space between the above side and the underside. Installation of the intake duct becomes easier.

Further, this underbelt 23 is stretched until the sheet 1 exits the processing section 10 and reaches a path where the side surfaces 6, 6 at both ends of the sheet 1 are bent downward by more than 90 degrees by the folding guide 17. Thereafter, the side surfaces 6, 6 at both ends are transported along the guide 18 by the endless belts 5, 5 until reaching the discharge section E.
are folded so that they are superimposed on the back side of the central side surface 7°7.

As described above, the present invention provides a processing section 10.
and a folding section 20 between the processing section 10 and the discharge section E, and the folding section 20 is in pressure contact with the upper surface of the sheet 1 coming out of the υloe processing section 10 to transport the sheet 1. In a sheet stamp folding machine equipped with an endless belt 5, the endless belt 5 is
The starting end 21 of the endless belt 5 is separated from the processing section 10, and the printed surface of the sheet 1 sent out from the processing section 10 is exposed between the processing section 10 and the starting end 21 of the endless belt 5. A porous underbelt 23 is formed below the transport path of the sheet 1 in the open part 22 and is used to suck and support the lower surface of the printed and sent out sheet 1 and transport it to the endless belt 5. Since the eight copies of the sheet 1 printed in the processing section 10 are not affected by the endless belt 5 from above immediately after leaving the processing section 10, they are not affected by the endless belt 5 from above. Sufficient drying time is provided in the open portion 22 between the sheet being transferred by the belt 23 and reaching the starting end 21 of the endless belt 5 .

Furthermore, it becomes possible to install an active drying device in the open part, which not only eliminates the transfer of the mark 111 ink and the occurrence of stains due to sliding contact in the folding part 20, but also increases the speed of the processing machine. It becomes possible to increase productivity.

Furthermore, since the above-mentioned underbelt 23 is stretched over the first half of the folding path, it does not interfere with the folding action of the sheet 1, and the feeding interval of the sheet 1 can be accurately maintained by the suction action. For example, it can be transferred to the endless belt 5.

This greatly contributes to improving quality and productivity.

[Brief explanation of drawings]

Figures 1 and 2 schematically show a conventional processing machine, with Figure 1 being a side view, Figure 2 being a sectional view taken along line A-A in Figure 1, and Figure 3 being a processing section. FIGS. 4 and 5 are perspective views of the sheet that has exited the system; FIGS. 4 and 5 are schematic representations of the flow side; FIG. 4 is a side view, and FIG. FIG. A is a sheet feeding section, B is a printing section, C is a lining section, D is a cutting section, E is an ejection section, 10 is a processing section, 20 is a folding section, 1 is a sheet, 5 is an endless belt, 21 is a The starting end of the endless belt, 23, is the underbelt.

Claims (1)

[Claims] 1 Feeder unit A that feeds out the stacked sheets 1 individually
, a processing section 10 equipped with at least a printing section B, and a folding section 20 between the processing section 10 and a discharge section E. In a sheet printing and folding machine equipped with an endless belt 5 for conveying the sheet 1 by pressing against the upper surface, the starting end 21 of the endless belt 5 is separated from the processing section 10 and the processing section 10 and the starting end 21 of the endless belt 5, an open section 22 is formed in which the printed surface of the sheet 1 sent out from the processing section 10 is exposed, and a lower part of the transport path of the sheet 1 in the open section 22 is formed. A processing machine for cardboard case material, characterized in that a porous underbelt 23 is interposed therein for sucking and supporting the lower surface of the printed sheet 1 and transferring it to the endless belt 5.