JP3202181B2 - Cardboard cutting equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for cutting a corrugated cardboard having a desired width by cutting one or more places in the width direction of the corrugated cardboard with a slitter blade or the like.
The present invention relates to a corrugated board cutting equipment used to obtain one or a plurality of sheets at the same time.

[0002]

2. Description of the Related Art Conventionally, urethane roll systems and grooved roll systems have been provided as this type of cardboard cutting equipment. In the urethane roll method, as shown in FIGS. 9 and 10, a urethane roll (blade receiver) 51 is disposed on the slitter blade 50 so as to face the upper side from the upper side, and the slitter blade 50 is driven and rotated. Accordingly, the cardboard 56 located below the urethane roll 51 is cut.

In the grooved roll system, as shown in FIG. 11, an annular groove 61 of a grooved roll (knife receiver) 60 is used.
In the state where the slitter blade 50 enters the inside, the grooved roll 60 is disposed facing the slitter blade 50 from above and from the upper side, and the slitter blade 50 is driven and rotated, so that the lower side of the grooved roll 60 is rotated. Is cut off.

[0004]

However, in the urethane roll method described above, as shown in FIGS. 9 and 10, the receiving surface of the cardboard 56 by the urethane roll 51 is a circular receiving surface 52. The bending force due to the cutting resistance of 50 is applied to the cardboard 56. That is, usually, the rotation speed of the slitter blade 50 is
6 is required to rotate at a high speed that is three to four times as high as the transfer speed (line speed) of 6, so that a bending force is applied to the cardboard 56.

[0005] Because of this bending force, the cardboard 56
In the cutting process, the front liner 57 receives a compressive stress P and then receives a tensile stress Q, and the back liner 59 receives a tensile stress Q and then receives a compressive stress P. That is, the corrugated cardboard 56 is cut while receiving the compressive stress P and the tensile stress Q alternately. By receiving the compressive stress P and the tensile stress Q in this way, the paper of the front liner 57 and the back liner 59 with respect to the wave liner 58 (peeling due to uncured glue) and the step of the wave liner 58 are caused. Become.

Moreover, since the urethane roll 51 always rotates while being in contact with the slitter blade 50, the roll life is short, the frequency of replacement is high, and the cost is high. Also, the above-mentioned grooved roll method has the same problem as the urethane roll method described above since the receiving surface of the grooved roll 60 is the circular receiving surface 62. Further, as shown in FIG. 11, since the cutting is performed in a state where the slitter blade 50 enters the annular groove 61, a gap is formed between the inner side surface 63 of the annular groove 61 and the outer side surface 64 of the slitter blade 50. 6
5, and the presence of these gaps 65 makes it difficult to sufficiently and reliably receive (hold) the back liner 59 of the cardboard 56.

In addition, the slitter blade 50 and the annular groove 61
And the gap 65 returns to the portion of the back liner 59.
Occurs, and as the blade wear of the slitter blade 50,
Fluffing occurs on the entire cut surface, and the commercial value of the cardboard 56 is reduced. Further, in order to reduce the gap 65, there is a problem that the accuracy of the positioning mechanism of the slitter blade 50 is required, and the manufacturing cost including control is increased.

[0008] Therefore, the inventors of the 請 Motomeko 1, wherein the present invention, when cutting the cardboard, Rukoto cause collapse stage due to bending forces
And the tool holder has a long service life,
It is an object of the present invention to provide a cardboard cutting equipment that can be lowered .

[0009]

[0010]

To SUMMARY OF THE INVENTION To achieve the above object, cardboard cutting equipment 請 Motomeko 1 description of the invention,
A corrugated board cutting equipment comprising a slitter blade and a blade receiver opposed to the slitter blade, the blade receiving device comprising:
Is a polygonal shape with multiple flat receiving surfaces formed on the outside
With the switching, one flat receiving surface is positioned parallel to the step ball transport direction, and the flat receiving surface is maintained in a parallel posture with respect to the slitter blade. It is characterized by being configured to be movable.

Therefore, according to the first aspect of the present invention, the slitter blade is driven and rotated in a state where the cutter receiver is at a suitable relative position with respect to the slitter blade, so that the corrugated cardboard conveyed on the conveyance path can be moved. In a state where the upper liner is brought into contact with the flat receiving surface from below and is guided, a predetermined portion can be cut by the slitter blade being driven and rotated.

When cutting such corrugated cardboard, the cutting resistance of the slitter blade is dispersed on the flat receiving surface, so that no bending force acts on the corrugated cardboard and no collapsing occurs. That is, the flat receiving surface receives only the cutting resistance of the slitter blade and guides the bending force. Moreover, the cardboard can be reliably received by the flat receiving surface.

Further, when the outer diameter of the slitter blade changes due to blade wear with use, the blade receiver may be moved in accordance with the change in the outer diameter. Can be done quickly. In addition,
If the blade holder is damaged, do not turn the blade holder.
By switching between different flat receiving surfaces
Can be positioned parallel to the transport direction.

[0014]

[0015]

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. Cardboard 1
The corrugated cardboard cutting equipment 10 is formed of the front liner 2, the wave liner 3, and the back liner 4, and is conveyed horizontally with the front liner 2 as the lower part. The cardboard cutting equipment 1
At 0, a disk-shaped slitter blade 12 is disposed with its rotary shaft 11 positioned lower than the cardboard transport path 5. A guide plate 13 that can receive the front liner 2 is provided at the slitter blade 12.

On the body 14 side of the cardboard cutting equipment 10,
Linear guide rail 15 along the cardboard transport direction 6
Are disposed opposite to the slitter blade 12 from above. A movable body 17 is provided on the linear guide rail 15 via a sliding body (guide) 16, and the movable body 17 is conveyed by a cylinder device 18 provided between the movable body 17 and the main body 14. It is configured to be movable along the direction 6.

A stopper device 20 is provided so as to face the lower end of the movable body 17.
A nut body 21 attached to the bracket 19 from the main body 14 side, a bolt body 22 screwed to the nut body 21 and capable of moving close to and away from the lower end by a rotating operation;
The bolt body 22 is constituted by a rubber body 23 provided at the lower end of the bolt body 22 and the like.

On the lower surface side of the movable body 17, there is provided an elevating body 25 which can be moved up and down by operation of an up and down adjustment bolt 24. The lifting body 25 is provided with a blade receiver 30 that faces the slitter blade 12 from above and from the upper side. The blade receiver 30 has a regular square shape, and a flat receiving surface 31 is formed by each of four outer surfaces, and all corners are formed on an appropriate R curved surface 32.

The blade receiver 30 is arranged such that one flat receiving surface 31 is parallel to the cardboard conveying direction 6. At that time, the blade receiver 30 is in the form of a cartridge, and is configured such that any flat receiving surface 31 is always positioned parallel to the cardboard transport direction 6 by switching.

That is, the elevating body 25 is formed with a recess 26 having one side surface and a lower surface opened, and the blade receiver 30 is configured to be able to be fitted and disengaged from the recess 26 in the direction of one side surface. ing. And in order to maintain the fitting posture,
An abutment plate 27 applied to the blade receiver 30 from one side, a fixing bolt 28 for fixing the abutment plate 27 to the elevating body 25, and a lifting / lowering after being passed from the abutment plate 27 to a central portion of the blade receiver 30. A through bolt 29 and the like screwed to the body 25 are provided.

The blade receiver 30 fixed to the elevating body 25 in this manner is configured to be movable with respect to the slitter blade 12 while maintaining the parallel posture of the flat receiving surface 31. That is, the blade receiver 30 is provided in the cylinder device 1.
By moving the movable body 17 by the operation of 8, the flat receiving surface 31 is maintained in a parallel posture, and the slitter blade 12 is moved in the front-rear direction 3 along the cardboard conveying direction 6 with respect to the slitter blade 12.
5 is movable (movable).

The movement of the flat receiving surface 3
In 1, the lower end in the cardboard transport direction 6 is a blade biting portion area 31A, and this blade biting portion area 31A.
Except for the above, most of the upper hand side becomes the guide area 31B. Then, a final cut portion 33 is formed by a boundary portion between the two regions 31A and 31B.

The operation of the first embodiment will be described below. The initial position setting of the blade receiver 30 is as follows:
This is performed as follows. That is, the slitter blade 1
In the state where the rotation of Step 2 is stopped, the elevating body 25 is lowered by operating the up-down adjusting bolt 24, and the flat receiving surface 31 of the blade receiver 30 is positioned at a predetermined level. Then, the cylinder device 18 is operated while adjusting the position of the rubber body 23 by screwing and rotating the bolt body 22 of the stopper device 20. By the extension movement of the cylinder device 18, the movable body 17 is moved to the stopper device 20 via the linear guide, and the lower end of the movable body 17 is brought into contact with the bolt body 22.

At this time, the relative position of the blade receiver 30 with respect to the slitter blade 12 is confirmed, and if the relative position is insufficient, the bolt body 22 is further adjusted while being screwed and rotated. If the relative position is sufficient, the adjustment is completed.
By contracting and moving the cylinder device 18 after such adjustment, the blade receiver 30 is separated from the slitter blade 12 as shown by the phantom line in FIG.

In operation, that is, when cutting the corrugated cardboard 1, first, the slitter blade 12 is driven and rotated, and the blade receiver 30 is moved closer to the slitter blade 12 as shown by the solid line in FIG. To a suitable relative position.

In this state, the corrugated cardboard 1 is conveyed on the conveying path 5 with the upper back liner 4 being in contact with the flat receiving surface 31 of the blade receiver 30 from below and being guided, and
Thus, a predetermined portion is cut by the slitter blade 12 being driven and rotated.

At this time, the flat receiving surface 3 of the blade receiver 30
1 is that the guide portion area 31B is located on the upper side with respect to the final cut portion 33. Therefore, when cutting the corrugated cardboard 1 as described above, the cutting resistance 34 of the slitter blade 12 has a flat receiving surface as shown in FIG. Thus, no bending force acts on the cardboard 1. That is, the flat receiving surface 31 receives only the cutting resistance 34 of the slitter blade 12, and the bending force is guided. For this reason, no tensile stress or compressive stress acts on the corrugated cardboard 1, and problems such as peeling of the paper and collapsing of the corrugated paper are solved.

After exiting the flat receiving surface 31 of the blade receiver 30, since the cutting resistance 34 has been remarkably reduced due to the completion of cutting, tensile stress, compressive stress and the like hardly act.

As described above, the flat receiving surface 31 of the blade receiver 30 has a lower end portion 31A in the cardboard conveying direction 6 at the blade biting portion area 31A, and a larger upper side portion at the guide portion area 3A.
1B, and the final cut portion 33 is formed by the boundary between the two regions 31A and 31B. Therefore, the final cut portion 33 does not always need to be one (constant).
Therefore, in the state where the slitter blade 12 is set, the blade receiving portion 30 is moved in the front-rear direction 35 to form the blade biting portion area 31A of a certain length, so that the final cutting point 33 can be set. Position setting can be easily and quickly performed.

When the outer diameter of the slitter blade 12 changes due to blade wear as shown by the imaginary line in FIG. 4 with the lapse of use, the stopper device 20 is adjusted according to the outer diameter change. The cutter receiver 30 may be moved in the front-rear direction 35, that is, the cutter receiver 30 may be moved backward as shown by the imaginary line in FIG. 4, so that the position adjusting operation of the final cutting portion 33 with respect to blade wear is easily and quickly performed. Can be done.

Further, when the blade biting area 31A is damaged with the lapse of use, the cartridge type blade receiver 30 is switched by turning or the like. That is,
Remove the fixing bolt 28 and the through bolt 29 and remove the blade receiver 30
Is removed from the recess 26, and the blade receiver 30 is
After turning to 0 degree, and after positioning the blade receiver 30 in the recess 26, the fixing bolt 28 and the through bolt 29 are tightened, so that another flat receiving surface 31 is moved with respect to the cardboard transport direction 6. They are positioned parallel.

Thus, the square-shaped tool receiver 30 is
By using the four surfaces in order, for example, four times the life can be obtained, and thus the frequency of replacement can be reduced, and the economy can be improved.

Next, a second embodiment of the present invention will be described with reference to FIG.
It will be described based on. That is, the blade receiver 30 is configured to be movable (movable) in the vertical direction 36 with respect to the slitter blade 12 while maintaining the parallel posture of the flat receiving surface 31.

Next, a third embodiment of the present invention will be described with reference to FIG.
It will be described based on. That is, the blade receiver 30 is configured to be movable (movable) in the inclined direction 37 at an angle 通 る passing through the rotation axis of the slitter blade 12 with respect to the slitter blade 12 while maintaining the flat attitude of the flat receiving surface 31. I have.

Next, a fourth embodiment of the present invention will be described with reference to FIG.
It will be described based on. That is, the cutter receiver 30 is configured to be movable (movable) in the arc direction 38 of the radius R centered on the fulcrum O with respect to the slitter blade 12 while maintaining the parallel posture of the flat receiving surface 31. .

Next, a fifth embodiment of the present invention will be described with reference to FIG.
It will be described based on. That is, the blade receiver 40 has a regular hexagonal shape, and a flat receiving surface 41 is formed on each of the six surfaces on the outer side, and all corners are formed on an appropriate R curved surface 42. The blade receiver 40 is of a cartridge type, and is disposed such that any one of the flat receiving surfaces 41 is always positioned parallel to the cardboard conveying direction 6.

According to the fifth embodiment, the flat receiving surface 41 is such that the lower end in the cardboard conveying direction 6 is the blade biting area 41A, and the remaining area excluding the blade biting area 41A is left. A large part on the upper side is a guide area 41B. Then, a final cut portion 43 is formed by a boundary portion between the two regions 41A and 41B.

In each of the above-described embodiments, the cutter receivers 30 and 40 are provided for each of the single or plural slitter blades 12 and are provided for each of the plural slitter blades 12. The divided type of each blade following type and the like are appropriately selected and adopted.

In each of the above embodiments, the blade receiver 3
A polygonal shape is used as 0 and 40, but this may be a flat plate shape.

[0041]

According to the first aspect of the present invention, the slitter blade is driven and rotated in a state where the blade receiver is at a suitable relative position with respect to the slitter blade, thereby conveying the blade on the transport path. In a state where the upper liner of the corrugated cardboard is brought into contact with the flat receiving surface from below and is guided, a predetermined portion can be cut by the slitter blade rotating and driven.

When cutting such a cardboard, the cutting resistance of the slitter blade is dispersed on the flat receiving surface, so that no bending force acts on the cardboard.
That is, the flat receiving surface receives only the cutting resistance of the slitter blade and guides the bending force. For this reason, tensile stress, compressive stress and the like do not act on the corrugated cardboard, so that problems such as paper peeling and step collapse can be solved. In addition, the cardboard can be reliably received by the flat receiving surface, and cutting without returning or fluffing can be performed.

When the outer diameter of the slitter blade changes due to blade wear with the lapse of use, the blade receiver may be moved in accordance with the change in the outer diameter. Can be done quickly. Further
When the blade holder is damaged during use,
By switching the object receiver by turning etc., another flat shape
The receiving surface can be positioned parallel to the cardboard transport direction.
You. With this, the polygonal cutter holder can be used
By using it, you will get a life that is many times longer,
Replacement less frequently, making it more economical
You.

[0044]

[Brief description of the drawings]

FIG. 1 shows a first embodiment of the present invention and is a partially cutaway side view of a corrugated board cutting equipment.

FIG. 2 is a partially cutaway front view of the cardboard cutting equipment.

FIG. 3 is a side view of a main part of the corrugated cardboard cutting equipment.

FIG. 4 is a side view of a main part for explaining blade receiving adjustment in the corrugated cardboard cutting equipment.

FIG. 5 is a side view of a main part illustrating a second embodiment of the present invention and illustrating adjustment of a blade receiver in cardboard cutting equipment.

FIG. 6 shows the third embodiment of the present invention, and is a side view of a main part for explaining blade receiving adjustment in the cardboard cutting equipment.

FIG. 7 shows a fourth embodiment of the present invention, and is a side view of a main part for explaining the blade receiving adjustment in the cardboard cutting equipment.

FIG. 8 shows a fifth embodiment of the present invention, and is a side view of a main part of a cardboard cutting facility.

FIG. 9 shows a conventional example, and is a side view of a cardboard cutting equipment using a urethane roll method.

FIG. 10 is a side view of a main part of the cardboard cutting equipment.

FIG. 11 is a side view of another conventional example, showing a corrugated board cutting equipment in a grooved roll system.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Corrugated cardboard 2 Front liner 3 Corrugated liner 4 Back liner 5 Conveying path 6 Corrugated cardboard conveying direction 10 Corrugated cardboard cutting equipment 12 Slitter blade 14 Main body 17 Movable body 18 Cylinder device 20 Stopper device 24 Vertical adjustment bolt 25 Elevating body 26 Concave 27 Backing plate 28 Fixing bolt 29 Through bolt 30 Blade receiver 31 Flat receiving surface 31A Blade biting area 31B Guide area 32 Curved surface 33 Final cutting point 34 Cutting resistance 35 Front-back direction 36 Vertical direction 37 Inclined direction 38 Arc direction 40 Blade receiver 41 Flat-shaped receiver Surface 41A Knife biting area 41B Guide area 42 Curved surface 43 Final cut

Claims (1)

(57) [Claims] 1. A corrugated cardboard cutting equipment comprising a slitter blade and a blade receiver opposed to the slitter blade, wherein the blade receiver has a plurality of flat receiving surfaces formed outside.
Polygonal shape, one flat shape by switching
The receiving surface is positioned parallel to the cardboard transport direction and
While maintaining the flat attitude of the flat receiving surface,
Corrugated board cutting equipment characterized by being movable with respect to a slitter blade.