JPH07125109A - Apparatus for folding end of folding bar of folder gluer - Google Patents

Abstract

PURPOSE:To facilitate work for replacing blades of a creaser slotter and a die cutter associated with stage exchange by installing a folding bar folding means which brings the blades in a horizontal condition and a vertical condition by turning them in the vertical direction around base end part as a supporting point. CONSTITUTION:A pair of right and left folding bars are installed perpendicularly to the corrugated paper sheet transfer direction, and the end part 20a of the folding bar 20 is supported by the folding bar 20 through a hinge 21 to be able to turn in the vertical direction. The end part 20a is placed to be able to expand, and rolls 23, 24 are supported on an expandable folding bar 22 to be able to rotate. Rolls 25, 26, 27 are supported at the end part 20a of the folding bar to be able to rotate, and a folding belt 29 is wound on rolls 23, 24, 25, 26, 27 etc.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a folding bar tip folding device for a folder gluer which transfers glue to a glue margin portion of a corrugated board sheet and folds it at a ruled line portion.

[0002]

2. Description of the Related Art Generally, a box making machine, as shown in FIG.
First, a predetermined number of corrugated cardboard sheets are stacked in advance on the paper feeding unit 1, and the corrugated sheets at the bottom are kicked out one by one, and the first printing unit 2, the second printing unit 3, and the third printing unit 4 are ejected. , And is fed to the fourth printing unit 5. Printing units 2, 3, 4, 5
Then, a pattern, characters, etc. are printed on the corrugated cardboard sheet and sent to the creaser slotter unit 7 and the die cutter unit 8. The creaser / slotter unit 7 has a ruled line on the part to be folded, and the slot for forming the flaps of the top and bottom lids. The die cutter unit 8 has a special shape punching process and then a folder gluer. It is sent to the folding bar 11 of the unit 10. In the folder / gluer unit 10, the glue is transferred to the glue allowance portion, folded at the ruled line portion, and sent out to the counter ejector 13. The counter ejector 13 counts the box-shaped corrugated cardboard sheets fed from the folder / gluer unit 10. While stacking, a predetermined number of sheets are stacked and sent to a binding machine. In the figure, 15 is a suction duct, 16, 1
7, 18 and 19 are suctions.

Further, the first to fourth printing units 2, 3, 4, 5 are openable or partially openable, and any one of the first to fourth printing units 2, 3, 4, 5 is used. By opening one printing unit for replacement of the block copy, the creaser slotter unit 7 and the die cutter unit 8 can be moved forward in the corrugated board sheet transport direction,
The blades of the creaser slotter unit 7 and the die cutter unit 8 can be exchanged with the setup change.

[0004]

By the way, in recent years, a completely fixed type printing machine in which all the printing units are fixed and some of them are not opened has appeared, but all the printing units 2, 3, 4, 5 Since it is fixed, the following creaser slotter unit 7 and die cutter unit 8 cannot be moved forward in the corrugated board sheet transport direction,
On the other hand, since the folding bar 11 of the folder gluer unit 10 following the die cutter unit 8 is also fixed, the creaser slotter unit 7 and the die cutter unit 8 cannot be moved rearward, and the creaser slotter unit 7 cannot be moved along with the setup change. It was impossible to replace the blade of the die cutter unit 8.

Therefore, according to the present invention, the tip of the folding bar of the folder / gluer unit is made foldable, and the creaser slotter unit and the die cutter unit are configured to be moved rearward in the corrugated board sheet conveying direction. An object of the present invention is to provide a folding bar tip bending device for a folder gluer unit that has been solved.

[0006]

The first invention of the present application has been made in view of the above-mentioned circumstances, and it is printed by a printing machine and ruled and slotted by a creaser slotter or punched by a die cutter. In a folder gluer in which glue is transferred to the glue allowance part and the ruled line part is folded with the folding belt of the folding bar, the tip part of the folding bar is formed and A folding bar tip portion whose end portion is rotatably supported; and folding bar bending means for vertically rotating the folding bar tip portion with the base end portion as a fulcrum to bring the folding bar tip portion into a substantially horizontal state and an upright state. It is characterized by being prepared.

A second aspect of the present invention is a corrugated cardboard sheet which is printed by a printing machine and which is subjected to ruled line processing and slot processing with a creaser slotter or punching processing with a die cutter, and a paste is applied with glue. In a folder gluer formed by folding and folding a ruled line portion with a folding belt of a folding bar, a tip of the folding bar is formed, and a tip of the folding bar whose base end is rotatably supported by the folding bar main body, Folding bar bending means for rotating the tip end of the folding bar up and down with the base end as a fulcrum to make it substantially horizontal and upright, and the folding bar body and a large number of rollers pivotally supported by the tip end of the folding bar. Folding belt wrapped around Belt tension adjusting means for adjusting the tension of the folding belt, and the folding bar bending means rotates the tip end portion of the folding bar upward from a substantially horizontal state with the base end portion as a fulcrum to an upright state. With
It is characterized in that the tension of the folding belt is adjusted by the belt tension adjusting means.

[0008]

According to the above-mentioned structure, the folding bar bending means rotates the tip end of the folding bar from the substantially horizontal state to the upright state by using the base end portion as a fulcrum, and at the same time, the belt tension adjusting means keeps the folding belt constant. Adjust to tension. As a result, a space is created behind the cardboard sheet of the creaser slotter and the die cutter, and the creaser slotter and the die cutter can be retracted rearward.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a folding bar tip bending device of a folder / gluer unit according to the present invention will be described below with reference to the drawings. FIG. 1 is a side view of a folding bar tip bending device of a folder gluer unit according to the present invention. A pair of folding bars are provided on the left and right with respect to the corrugated board sheet transport direction. As shown in FIG.
It is supported by 0 so as to be vertically rotatable. The tip 2
The telescopic folding bar 22 is accommodated in the telescopic folding bar 0a so that the rolls 23 and 24 are rotatably supported by the telescopic folding bar 22, and the rolls 25, 26, and 27 are freely rotatable at the tip 20a of the folding bar. Supported by the rolls 23, 24, 25, 26, 27
A folding belt 29 is wound around these parts.

Further, the tip portion 20 of the folding bar is
One end of a plate 31 is fixed to the inside of a side of the hinge a on the hinge 21 side, and the other end of the plate 31 extends to the side of the folding bar 20 and is fixed to the folding bar 20 by a pin 32 and a bolt 33. It is supposed to be done. Further, the extension / contraction folding bar 22 has its tip extendable / contractible between an A position and a B position by an air cylinder (not shown).

Further, a bracket 35 is fixed to the upper surface of the folding bar 20, a gluing roll driving gear 36 and a gear box 37 connected to the gear 36 are housed in the bracket 35, and the gluing roll is attached to the gear box 37. The drive shaft 38 is connected. Further, a motor 40 is fixed to the upper surface of the bracket 35, and a sprocket 41 is fixedly mounted on the shaft of the motor 40.

Further, the shaft of the chain winding sprocket 43 is rotatably supported on the upper surface of the bracket 35 via the bracket 42, and the chain winding sprocket 4 is rotatably supported.
A sprocket 44 is fixedly mounted on the shaft of 3, and a chain 45 is wound around the sprocket 41 and the sprocket 44. A chain 47 is wound around the chain winding sprocket 43, and a tip end of the chain 47 is connected to a chain holder 48 fixedly provided on an upper surface of the folding bar tip portion 20a. Further, the folding bar 20, the folding bar tip portion 20a, the telescopic folding bar 22, and the folding belt 29 have a suction structure, and the corrugated cardboard sheet S abutting the lower surface of the folding belt 29 is held and conveyed by the suction action. Is configured.

Further, the folding bar tip portion 20a
A table 52 whose base end is rotatably supported by a frame 50 via a pin 51 is arranged below the telescopic folding bar 22, and a large number of rollers 49, 49 ,. It is rotatably supported and connected. A mounting bracket 53 is provided on the lower surface of the table 52 substantially in the center.
Is fixed to the fitting 53, and the tip 54 of the rod 54 is attached to the fitting 53.
a is rotatably supported via a pin 55, and the rod 54
The base end 54b of the above is rotatably supported by the frame 50 via a pin 56. Then, the tip 5 of the rod 54
When 4a is supported by the mounting bracket 53 via the pin 55, the table 52 is kept substantially horizontal (position C), and the pin 55 is pulled out to release the tip 54a of the rod 54 from the mounting bracket 53. , The pin 54 serves as a fulcrum, and the rod 54 rotates downward due to its own weight.
Also pivots downward on the pin 51 as a fulcrum by its own weight and
It is supposed to be in position. Also, in the figure, 58, 59
Is a sheet guide, and 61 and 62 are an anvil cylinder and a die cylinder of the die cutter unit.

Since the present invention is constructed as described above,
When exchanging the blades of the creaser slotter unit and die cutter unit with the setup change, the pin 32 is removed, the motor 40 is driven, and the chain winding sprocket 43 is rotated through the sprocket 41, the chain 45, and the sprocket 44. When the chain 47 is wound up, the folding bar tip portion 20a and the telescopic folding bar 22 rotate upward from the E position to the F position with the hinge 21 as a fulcrum, and at the same time, the air cylinder causes the telescopic folding bar 22 to move. The tip is retracted from the A position to the B position. Retracting of this folding bar 22 and folding belt 2
A tension adjusting mechanism using a tension roller (not shown) 9 absorbs the extension of the folding belt 29 accompanying the rotation of the folding bar tip portion 20a and the telescopic folding bar 22 to maintain a constant tension.

Then, the pin 55 is pulled out to pull out the rod 54.
When the tip 54a of the rod is released from the mounting member 53 and the rod 54 is rotated downward by its own weight with the pin 56 as a fulcrum, the table 52 is also rotated by its own weight with the pin 51 as a fulcrum and is moved to the C position. To the D position. Therefore, the folding bar tip portion 20a and the telescopic folding bar 22 rotate upward from the substantially horizontal state to the standing state, and the table 52 also rotates downward and hangs down. Therefore, the creaser slotter unit and the die cutter unit are not supported. A space is created behind the corrugated board sheet in the conveying direction, whereby the creaser slotter unit and the die cutter unit can be retracted rearward, and the blades of the creaser slotter unit and the die cutter unit can be easily replaced with the setup change.

Although the motor and the chain are used as the folding bar bending means in the above embodiment, it is not limited to this and other means such as a cylinder may be used. Further, in the above-described embodiment, the air cylinder is used to extend and retract the telescopic folding bar,
Other means such as a hydraulic cylinder may be used.

[0017]

As described above, according to the present invention,
Since the tip of the folding bar can be bent, a space is created behind the creaser slotter and die cutter in the corrugated board sheet transport direction. Also, the work of exchanging the blade of the die cutter becomes easy, and the inspection and maintenance can be easily and easily performed.

[Brief description of drawings]

FIG. 1 is a side view showing a folding bar tip bending device according to the present invention.

FIG. 2 is a side view showing a conventional box making machine.

[Explanation of symbols]

 20 Folding Bar 20a Folding Bar Tip 21 Hinge 22 Telescopic Folding Bar 29 Folding Belt 31 Plate 40 Motor 43 Chain Winding Pulley 47 Chain 48 Chain Holder 52 Table

Claims (2)

[Claims] 1. A corrugated cardboard sheet which is printed by a printing machine and which has been subjected to ruled line processing and slot processing with a creaser slotter or punching processing with a die cutter, transfers the glue to the glue allowance portion and uses the folding belt of the folding bar. In a folder gluer formed by folding a ruled line portion, a tip end portion of the folding bar is formed, and a tip end portion of the folding bar main body whose base end portion is rotatably supported, and a tip end portion of the folding bar. A folding bar tip bending device for a folder gluer, comprising: a folding bar bending means that is vertically rotated about the fulcrum to make a substantially horizontal state and an upright state. 2. A corrugated cardboard sheet that is printed by a printing machine and has undergone crease processing and slot processing with a creaser slotter or punching processing with a die cutter, and transfers the glue to the glue allowance portion with a folding belt of a folding bar. In a folder gluer formed by folding a ruled line portion, a tip end portion of the folding bar is formed, and a tip end portion of the folding bar main body whose base end portion is rotatably supported, and a tip end portion of the folding bar. A folding bar bending means for vertically rotating about the fulcrum as a fulcrum so as to be in a substantially horizontal state and an upright state, and a folding belt wound around a large number of rollers pivotally supported by the folding bar body and the tip of the folding bar. , The foldin And a belt tension adjusting means for adjusting the tension of the belt, wherein the folding bar bending means rotates the tip end portion of the folding bar upward from a substantially horizontal state with the base end portion as a fulcrum to an upright state. A folder-gluer folding bar tip bending device, wherein the tension of the folding belt is adjusted by a belt tension adjusting means.