JP2001121624A - Regulating device for folding bar of folder gluer in corrugated fiberboard sack machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a regulating device for the folding bar of the folder gluer, in which in case of folding and working a corrugated fiberboard sheet by the folder gluer, the folding bar of the folder gluer positioned in a desired position is regulated so as to be rightly guided along a creasing line given by a creaser. SOLUTION: In the regulating device for the folding bar of the folder gluer for bending and working a corrugated fiberboard sheet, positional regulation is performed by the regulating device for the folding bar which shifts one hand of folding bar in the direction of mechanical width for the other folding bar.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] 1. Field of the Invention [0002] The present invention relates to a folder gluer for performing printing, ruled lines, grooving, and the like on a plate-shaped corrugated cardboard sheet, and then performing bending.

[0002]

2. Description of the Related Art A processing machine for processing a plate-shaped corrugated cardboard sheet produced by a corrugator (not shown) is mainly composed of a corrugated cardboard box machine 1 for printing, creases and grooving, and a corrugated box machine 1. Folder gluer 2 for folding and bundling the corrugated cardboard sheets into a desired number of sheets, and a machine processed by a stacker (not shown) for stacking the corrugated cardboard sheets processed by the corrugated box making machine 1 into a desired number of photos or each lot. are categorized. For example, in a general cardboard sheet processing machine called flexo folder gluer, FIG.
As shown in (1), the cardboard sheet S placed on the sheet feeding table of the sheet feeding unit 3 is supplied to the feed rollers 4a and 4b in the downstream direction by a sheet feeding member such as a kicker (not shown) and sent to the printing unit 5. Generally, at least two printing units 5 are provided, and each printing unit 5
The desired printing is performed in steps a and 5b. Printing units 5a, 5b
Is a printing cylinder 6 on which a desired printing plate (not shown) is wound.
Press cylinders 9a and 9b are provided at positions opposite to each other with the paper line PL interposed therebetween.
The printing cylinders 6a, 6b and the press cylinders 9a, 9b
The desired printing is performed on the corrugated cardboard sheet S by passing the corrugated cardboard sheet S in between. The printing unit 5
a and 5b are anilox rolls 7 for applying ink to a printing plate (not shown) wound around the printing cylinders 6a and 6b.
a, 7b and rubber rolls 8a, 8b. Subsequently, the printed cardboard sheet S is sent to the creaser slotter unit 11, where the creaser slotter unit 1
A ruled line for bending the corrugated cardboard sheet S is provided at a desired position by the first creaser rolls 12a and 12b. Then, the sheet is sent to the slotter 14, and the upper and lower blades 14a, 14b of the slotter 14 perform a groove cutting process on the corrugated cardboard sheet. In addition, 10a, 10b and 13a, 13b in the figure
Is a feed roller for conveying the cardboard sheet S to the downstream side.

[0003] Subsequently, the corrugated cardboard sheet S is bent by a folder gluer 2 connected to the downstream side of the corrugated cardboard box making machine 1 to be in a box state. Specifically, the upper folding bar 15 of the folder gluer 2 is mounted on the folding frame 17 and the squaring frame 21,
The lower folding bar 16 is supported by a folding frame 17 and a folding stand 18. An upper folding belt 19 and a lower folding belt 20 are wound around each of the folding bars 15 and 16, respectively.
The corrugated cardboard sheet S sandwiched by the folding belts 5 and 16 and the folding belts 19 and 20 is conveyed and folded along a guide bar 49 made of nylon or the like while passing through the upper and lower folding bars 15 and 16. In the bending step, one end of the corrugated cardboard sheet S is glued by a gluing device (not shown), and both ends of the corrugated cardboard sheet S are bent along the ruled line applied by the creaser 12, and the other end is attached to one end of the glued cardboard sheet S. Are laminated, and a series of bending processes are completed. The folder gluer 2 may be a single folder gluer that is not directly connected to the cardboard box making machine 1. However, in the following detailed description of the present invention, a cardboard box having a structure in which the folder gluer 2 is directly connected to the cardboard box making machine 1 will be described. It will be described with a processing machine. However, the invention is also applicable to a single folder gluer.

[0004] As shown in FIGS. 7 and 8, the folding bars 15, 16 and the folding belts 19, 20 have detailed structures, and the folding bars 15, 16 are guide shafts 25, 25 mounted on folding frames 17, 17. Bracket portions 15c, 15d and 16c, 16d of the upper and lower folding bars are penetrated into the upper and lower folding bars, and the bracket portions 15c, 15d of the upper and lower folding bars are mounted on screw shafts 26, 26 mounted on the folding frames 17, 17, respectively. And 16c, 16
d is screwed. The upper and lower folding belts 19, 20 are wound around upstream carry-in pulleys 23, 23 rotatably attached to the upper and lower folding bars 15, 16, and a downstream discharge pulley (not shown). I have. The intermediate portions are guided by upper and lower guide rollers 28, 29, respectively, and the folding frames 17, 1
In the seventh part, it is wound around folding belt driving pulleys 24, 24 on intermediate shafts 27, 27 which are suspended on the folding frames 17, 17, respectively. Therefore, when the corrugated cardboard sheet S is transported while being processed, the intermediate shafts 27, 2 suspended on the folding frames 17, 17.
The upper and lower folding belts 19 and 20 are driven by driving the driving device 7 (not shown) and rotating the intermediate pulley. Then, the upper and lower folding bars 15, 1 accompanying the order change
The position change in the width direction of Folding Frame 1
The screw shafts 26, 26 mounted on the shafts 7, 17 are rotated by a drive device (not shown), and the upper and lower folding bars 15, 16 are moved and positioned along the guide shafts 25, 25.

[0005] As shown in FIG. 2, a folding stand 18 for supporting the upper and lower folding bars 15, 16 is provided substantially in the middle of the upper and lower folding bars 15, 16. The folding stand 18 is adapted to move the upper and lower folding bars 15 and 16 in the machine width direction in accordance with the movement of the guide rails 4 installed on the folding floor surface.
3 is configured to be movable in the machine width direction via guide rollers 44a, 44b, 44c, and 44d. The corrugated cardboard sheet S bent in the folding section is dried in the squaring section and the glue dried and corrected in the bonding section.
2 and stacked in a desired number, and bound and shipped by a binding machine (not shown).

[0006]

The conventional folder gluer is positioned and processed as described above, and the folding bar of the folder gluer is accurately positioned at a desired position by the above-described method. Is done. However, the folding bar itself is very long, and it is mechanically inevitable that a slight positioning error occurs on the upstream and downstream sides of the folder gluer. The preferred bending state of the folding process of the corrugated cardboard sheet in the folder gluer is preferably such a shape as shown in FIG. 6 (a), and when the glue margin formed at one end of the corrugated cardboard sheet S is bonded to the other end. Is desirably the same as the interval at which the slotter 14 performs the groove cutting. However, even if the folding bar of the folder gluer is accurately positioned, if a slight positioning error occurs on the upstream side and the downstream side, the folding is performed while the corrugated cardboard sheet S runs on the folding bar and the bending process is performed. A gap is formed in the bent portion between the bar and the ruled line of the corrugated cardboard sheet S, so that a correct bending process is not performed, and the bar is bent into a shape as shown in FIG. 6B or FIG. Will be defective.

More specifically, FIG. 6B shows that, at the initial stage of folding the corrugated cardboard sheet S in the folder gluer, the folding bar is positioned at a position slightly wider than a correct position at which the folding bar is originally positioned. The folding bar guides the corrugated cardboard sheet S at both outer portions of the corrugated cardboard sheet and is folded at the ruled line portion that should be bent at the correct position applied to the corrugated cardboard sheet, so that the corrugated cardboard sheet formed by the folder gluer S is a gap t that should be formed when a glue margin formed at one end of the corrugated cardboard sheet S is bonded to the other end.
Since the bending process was performed at the wider gap t1, the gap was formed wider than the groove cut by the slotter 14. Although not shown, the folding bar is positioned slightly narrower than the correct position where the folding bar is originally positioned.
The folding bar guides the corrugated cardboard sheet S on both inside portions of the corrugated cardboard sheet and is folded at the ruled line portion that should be folded at the correct position applied to the corrugated cardboard sheet, so that the corrugated cardboard sheet formed by the folder gluer In the slotter 14, the gap formed when the glue margin formed at one end of the corrugated cardboard sheet S is bonded to the other end is smaller than the gap t which should be correctly formed, and the bending process is performed. In this case, the gap was narrower than the grooving interval.

FIG. 6C shows that a slight positioning error occurs on the upstream side and the downstream side of the folder gluer, so that the corrugated cardboard sheet S is bent and guided by the folding bar, and This is an example in which a so-called fishtail state occurs in which a bent portion is distorted and the rear end of the cardboard sheet S in the transport direction is opened by tα. In addition, such a phenomenon occurs when a gap is formed between the corrugated cardboard sheet S and the folding bar and the bent portion of the corrugated cardboard sheet S is not guided at all, and play occurs in the bent portion that has been creased by the creaser 11 as shown in FIG. In some cases, the fishtail state as shown in c) occurs. Therefore, at the time of bending the corrugated cardboard sheet in the folder gluer, it is necessary for the folding bar to correctly guide the bent portion of the ruled line portion applied by the creaser 11.

[0009]

SUMMARY OF THE INVENTION An object of the present invention is to provide a folder gluer provided with an adjusting device which can adjust a folded portion of a ruled line portion formed by a creasing device so that a folding bar can correctly guide the folded portion of a corrugated cardboard sheet S with a folder gluer. The purpose is to provide.

[0010]

Means to Solve the Problems To overcome the above problems,
In order to appropriately achieve the intended purpose, the present invention provides a folding frame provided with a pair of folding bars and a pair of corrugated cardboard sheet conveying means in a vertical relationship, and a plate-shaped corrugated cardboard sheet on which ruled lines and groove cutting are performed. In a folder gluer of a cardboard box making machine which folds the plate-shaped cardboard sheet at a desired position to form a folded box while nipping and transporting the sheet between a pair of folding bars and a pair of cardboard sheet transport means. Folder gluer in a cardboard box making machine, characterized by having a folding bar adjustment device for moving the one folding bar located on the side where the corrugated cardboard sheet is bent relative to the other folding bar in the horizontal direction. Is a folding bar adjusting device.

[0011]

According to the folder gluer folding bar adjusting device in the cardboard box making machine of the present invention, in the folder gluer folding bar positioned at a desired accurate position, the folding bar provided on the folding bar on the cardboard sheet bending side is provided. Fine adjustment was performed by the bar adjusting device, and the folded portion of the ruled line attached to the corrugated cardboard sheet by the creasing was adjusted so that the folding bar could correctly guide, so that the corrugated cardboard sheet bent by the folder gluer was formed at one end. The gap t formed when the glue margin is bonded to the other end is the same as the interval at which the slotter 14 grooved.

[0012]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view showing a folder gluer adjusting device for a folder gluer in a box making machine according to the present invention. 1 and 2 show a folder gluer folding bar adjusting device 50 in a box making machine according to the present invention.
The upper and lower folding bars 15, 1 are mounted on the folding frames 17, 17 of the folder gluer 2 and the squaring frames 21, 21.
6 and its upper and lower folding bars 15, 16
The folding belts 19 and 20 are rotatably provided around the carry-in pulley 23, the intermediate pulley 24, and the guide rollers 28 and 29. A plurality of gauge rollers 31 for guiding the folding of the corrugated cardboard sheet are attached to the upper folding bar 15 at predetermined intervals from a desired position on the carry-in side toward the downstream side. As shown in FIG. 4, the gauge roller 31 is attached so as to be rotatable in the horizontal direction from the upper folding bar 15 via the stay 30. This gauge roller 31
The taper surface is almost vertical on the loading side, but the taper surface gradually becomes horizontal toward the downstream side in accordance with the bending process of the cardboard sheet S. This gauge roller 31
Is mounted so as to be rotatable in the horizontal direction by a driving device (not shown), but may be free rotation since a driving device is not necessarily required.

FIG. 3 is a view of the upstream side from the folding stand 18 in view of the paper line.
As shown in the figure, an upstream gauge bar 32 having a tapered surface for guiding a bent portion on the inner surface where the corrugated cardboard sheet S is bent is attached to the upstream side of the lower folding bar 16. The upstream gauge bar 32 is configured to guide the folded inside of the corrugated cardboard sheet S so that it can be correctly folded by the ruled line attached by the creaser 12 serving as a bent portion of the corrugated cardboard sheet S.
The bent surface of the cardboard sheet S is the guide bar 4
9 and the tapered surface of the upstream gauge bar 32, the bent surface of the corrugated cardboard sheet S is in contact with the tapered surface of the upstream gauge bar 32, and the corner of the upstream gauge bar 32 is in a gap with the ruled line portion provided by the creaser 12. It is preferable that the sheet is conveyed on the folding bar without contact.

FIG. 4 is a view of the downstream side of the folding stand 18 from the viewpoint of the paper line.
As shown in the figure, the downstream side of the lower folding bar 16 is provided with a structure for a step of finally folding the corrugated cardboard sheet S folded on the upstream side. That is, the lower folding bar 16 is provided with a downstream gauge bar 51 that guides a bent portion of the corrugated cardboard sheet S that bends along the guide bar 49, and is conveyed while being sandwiched by the gauge roller 31 provided on the upper folding bar 15, and bent. Is performed.

Next, a folding bar adjusting device 50 is provided at a folding stand 18 located at an intermediate portion between the upper and lower folding bars 15 and 16. The folding bar adjusting device 50 is shown in FIGS.
As shown in detail in FIG. 4, a motor 48 is attached to the folding stand 18 via a bracket 47. A slider portion 34 is provided between the folding stand 18 and the lower folding bar 16 to which the upstream gauge bar 32 and the downstream gauge bar 51 are attached.
The lower folding bar 16 moves with respect to the folding stand 18 by the action of the slider portion 34 to position the upstream gauge bar 32 and the downstream gauge bar 51. The configuration of the slider section 34 is as follows.
A rotating shaft 39 having a screw shaft 36 rotatably supported in a bearing 38 attached to a box 37 is provided. A nut 35 that is screwed with the above-mentioned screw shaft 36 is joined to a bracket 33 that supports the lower folding bar 16. A pulse transmitter 41 for detecting the number of rotations of the rotating shaft 39 is attached to the slider portion 34 via a bracket 42 on an extension of the rotating shaft 39. A sprocket 40 is provided on the rotating shaft 39, and the motor 4
8 is wound around a sprocket 40 on the slider side via a chain from a sprocket attached to the output portion of the slider 8.

This folding bar adjusting device 50
Is provided on each of the folding bar and the folding stand on the operation side and the drive side, but either one may be provided as necessary. In addition, a drive device of the folding bar adjustment device and a device having a configuration including a motor, a sprocket, and a chain as a transmission means thereof have been disclosed.However, the invention is not limited thereto. A rack may be mounted and a pinion may be rotated by the rack. In addition to this, there are a number of devices using a number of drive and transmission means. Furthermore, as the adjusting mechanism of the folding bar, an adjusting mechanism of a configuration using a slider has been disclosed, but this is not limited to this device.
For example, the folding bar may be directly moved and adjusted with respect to the folding stand by a motor, an air cylinder, or other various actuators. These adjustment mechanisms are not limited to the means using a drive source, and may be of a manual type using no drive source.

Also, in the above-described embodiment, the folding bar adjusting device in the folder gluer for bending the cardboard sheet downward has been described. However, in the case of the folder gluer for bending the cardboard sheet upward. Although not shown, the folding bar adjusting device is attached to the upper folding bar side. That is, the lower folding bar 16 includes the folding frame 17 and the squaring frame 21.
The upper folding bar 15 is supported by the folding frame 15 and a stay (not shown).

Next, the use of the preferred embodiment of the present invention will be described with reference to FIGS. First, as shown in FIG. 9, the corrugated cardboard sheet S stacked on the paper feed table of the paper feed unit 3 is supplied to the feed rollers 4 a and 4 b in the downstream direction by a paper feed member such as a kicker (not shown), and is supplied to the print unit 5. send. Desired printing is performed in each of the printing units 5a and 5b. Subsequently, the printed cardboard sheet S is sent to the creaser slotter unit 11, and the creaser rolls 12a, 12a of the creaser slotter unit 11 are moved.
By b, a ruled line for bending the cardboard sheet S is provided at a desired position. Then, the corrugated cardboard sheet is sent to the slotter 14 and slotted by the slotter blades 14 a and 14 b in the slotter 14.

Subsequently, the corrugated cardboard sheet S is bent by a folder gluer 2 connected to the downstream side of the corrugated cardboard box making machine 1 to be in a box state. Specifically, the corrugated cardboard sheet S sandwiched between the upper folding belt 19 and the lower folding belt 20 wound around each of the upper folding bar 15 and the lower folding bar 16 of the folder gluer 2 includes upper and lower folding bars 15, 16, one end of the corrugated cardboard sheet S is glued by a gluing device (not shown), and both ends of the corrugated cardboard sheet S are bent along the ruled line attached by the creaser 12, and another end is attached to one end of the glued corrugated cardboard sheet S. The ends are laminated, and a series of bending processes are completed.

While printing, ruled lines, grooving, and bending of the corrugated cardboard sheet S are performed in the above-described steps, in particular, in bending with the folder gluer 2, FIG.
When the bending process as shown in FIG. 6B or FIG. 6C occurs or is likely to occur, the folding bar adjusting device 50 provided in the folder gluer 2 is used.
Is operated to adjust to a state where a preferable bending process as shown in FIG. 6A can be performed. Specifically, the operator presses a start button (not shown) of the motor 48, and the motor 4
When the starter 8 is activated, the sprocket 46 attached to the output shaft of the motor 48 rotates, and the sprocket 40 on the slider portion 34 side rotates via the chain 45. The rotation of the sprocket 40 causes the rotation shaft 39 and the coaxial screw shaft 36 to rotate, and the nut 35 screwed to the screw shaft 36 moves in the screw shaft 36 direction. The nut 35 is a bracket 33 for supporting the lower folding bar 16.
When the nut 35 moves on the screw shaft 36, the lower folding bar 16 moves in the machine width direction, and the upstream gauge bar 32 and the downstream gauge bar 51 attached to the lower folding bar 16 also move to the machine width. Move in the direction. The pulse generator 41 measures the number of rotations of the sprocket 40 on the slider portion 34 side by the output from the motor 48, and controls the amount of movement of the nut 35 accompanying rotation of the screw shaft 36 in the slider portion 34 by a controller (not shown). ing. At this time, since the upper folding bar 15 does not move at all, it moves relatively to the upper folding bar 15.

When the folding bar is adjusted using the folding bar adjusting device 50 as described above,
As shown in FIG. For example, FIG. 5A shows a case where the downstream side of the lower folding bar 16 is adjusted to the outside in the machine width direction with respect to the lower folding bar 16 positioned at a desired position. Since one end of the lower folding bar 16 is penetrated through the guide shaft 25 of the folding frame 17 via the bracket, the portion where the guide shaft 25 and the bracket of the lower folding bar 16 are linked when the folding bar adjusting device 50 is operated. Is adjusted so that the downstream side of the lower folding bar 16 can be pushed and spread in the machine width direction. FIG. 5C shows the lower folding bar 16 positioned at a desired position.
This is a case where the position of the downstream side of the lower folding bar 16 is adjusted toward the inside in the machine width direction. 5 (a), when the folding bar adjusting device 50 is actuated, the downstream side of the lower folding bar 16 is narrowed in the machine width direction with the fulcrum at the point where the guide shaft 25 and the bracket of the lower folding bar 16 are linked. Is adjusted as follows.

FIG. 5B shows a case in which the position of the entire lower folding bar 16 is adjusted in parallel to the outside or inside in the machine width direction with respect to the lower folding bar 15 positioned at a desired position. For example, in order to adjust the lower folding bar 16 positioned at a desired position to a further optimal position, the lower folding bar 1
In this embodiment, the screw shaft 26 screwed to the bracket No. 6 is actuated and the folding bar adjusting device 50 is actuated to move only the lower folding bar 16 in the machine width direction outward or inward. Alternatively, folding bar adjustment devices 50 are provided on the upstream and downstream sides of the lower folding bar 16, respectively.
After being positioned at a desired position, the lower folding bar is parallelly adjusted outward or inward in the machine width direction so as to be positioned at an optimum position.

By operating the folding bar adjusting device 50 in this manner, the folding bar can be arbitrarily adjusted, and the optimum bending as shown in FIG. 6A can be always performed.

[0024]

After the folding bar of the folder gluer is positioned at a desired target position, the folding bar adjusting device is operated to always perform the bending process as shown in FIG. 6 (a). Disappears. Further, in the folding bar positioned at a desired position, a positioning error does not occur between the upstream side and the downstream side at the time of bending by the folding bar adjusting device.

Furthermore, since the folding bar is positioned at the correct position where the folding bar is originally positioned by the folding bar adjusting device, the folding process of the corrugated cardboard sheet is performed by the creaser 12 at the ruled line portion to be bent at the originally correct position attached to the corrugated cardboard sheet. 6B, the bending failure as shown in FIG. 6B is eliminated, and the glue margin formed at one end of the corrugated cardboard sheet S is attached to the other end of the corrugated cardboard sheet S formed by the folder gluer. The resulting gap is always the gap t that should be correctly formed, and bending is performed.

Since there is no positioning error between the upstream side and the downstream side of the folder gluer, the bent portion of the cardboard sheet is not distorted while the cardboard sheet is bent and guided by the folding bar. Since the folding bar correctly guides the bent portion of the ruled line portion formed by the creaser 11, the so-called fish tail state in which the rear end in the transport direction of the corrugated cardboard sheet opens by tα as shown in FIG. 6C. The bending process defect is eliminated.

[Brief description of the drawings]

FIG. 1 is a plan view illustrating a folding bar adjusting device in a folder gluer according to the present invention.

FIG. 2 is a view of the folding bar adjusting device in the folder gluer according to the present invention, taken along the line AA in FIG. 1;

FIG. 3 is a diagram illustrating details of a folding bar adjustment device according to the present invention.

FIG. 4 is a diagram showing details of a folding bar adjusting device of the present invention.

FIG. 5 is a view showing an operation of adjusting a folding bar by the folding bar adjusting device of the present invention.

FIG. 6 is a diagram illustrating a state in which a cardboard sheet is folded by a folding bar.

FIG. 7 is a side view showing a positioning means of a folding bar of a folder gluer, a folding belt driving means, and the like.

FIG. 8 is a plan view showing a folding bar positioning unit, a folding belt driving unit, and the like of the folder gluer.

FIG. 9 is a side view showing a cardboard sheet box making machine including a folder gluer.

[Explanation of symbols]

1 Cardboard Box Making Machine 2 Folder Gluer 15 Upper Folding Bar 16 Lower Folding Bar 17 Folding Frame 18 Folding Stand 19 Upper Folding Belt 20 Lower Folding Belt 31 Gauge Roller 32 Gauge Roller 34 Slider 50 Folding Bar Adjuster

Claims (3)

[Claims] 1. A folding frame (17, 1)
7) a pair of folding bars (1
, 16) and a pair of corrugated cardboard sheet conveying means (19, 2).
0), and a plate-like corrugated cardboard sheet (S) on which a crease line, a groove cutting process, etc. have been performed is placed on a pair of folding bars (1).
, 16) and a pair of corrugated cardboard sheet conveying means (19, 2).
0) in a folder gluer of a corrugated box making machine, wherein the corrugated cardboard sheet (S) is bent at a desired position and formed into a folded box while being conveyed while being pinched in (0). A folding bar adjusting device (50) for horizontally moving the one folding bar (16) located on the side where the fold is folded with respect to the other folding bar (15). Folder gluer folding bar adjustment device in a box machine. 2. The one folding bar (1)
The folding of the folder gluer in the cardboard box making machine according to claim 1, wherein (6) adjusts the other side by the folding bar adjusting device (50) with one portion pivotally supported by the folding frame (17, 17) as a fulcrum. Bar adjustment device. 3. The folding bar adjusting device (5)
The folding bar adjusting device for a folder gluer in a cardboard box making machine according to claim 1, wherein one of the folding bars (16) is adjusted in cooperation with one of the parts supported by the folding frame (17, 17).