JP2000079645A - Corner cutter of slotter for corrugated fiberboard sheet case manufacturing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate replacement of a corner cut-off blade and to simply rapidly replace a stage by providing a plurality of corner cut-off blades at a desired interval in a circumferential direction of a slotter shaft, and movably arranging the blades between a position for cutting a corrugated fiberboard sheet and a position for inhibiting to cut it. SOLUTION: Corner cut-off blades 21A, 21B are provided at least two or more positions in a circumferential direction of a slotter holder 17. They have each substantially the same constitution. The each blade has a first edge 21a fixed to one end side of an oscillating member 20, and a second edge 21b fixed to the other end side. The member 20 is mounted oscillatorily in a plane perpendicular to an axis of a slotter shaft 10 via an oscillating shaft 22 at an intermediate part to the holder 17 rotating integrally with the shaft 10. When the member 20 is oscillated, the edges 21a, 21b approach to and separate from a passing line PL of a corrugated fiberboard sheet C between a cutting position for cutting the sheet C and a retracted position for inhibiting to cut.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slotter for cutting an end of a corrugated cardboard sheet in a corrugated cardboard sheet making machine.

[0002]

2. Description of the Related Art Conventionally, for example, as shown in FIG.
Usually, printing is carried out by 2 and a creasing unit 3 gives a folding line at the time of box making, and then supplies it to a slitter 4 of a slotter. That is, in the supply direction of the corrugated cardboard sheet C, for example, as shown in FIG. 23, a groove 5 for box making is formed, and one end of the corrugated cardboard sheet C (the right end in this figure) By cutting a groove 6 and making a cut line 7 of a square, a piece of paper 8 at the end is cut and removed, thereby forming a protruding portion 9 serving as a normal gluing allowance in box making.

[0003] Such a slotter slicing device 4 is provided with a slotter shaft 10 and a receiving shaft 11 in Fig. 22, and performs the above-described grooving and squaring while rotating in opposite directions. For example, FIG.
As shown in FIG. 27, the groove cutting blade 13 on the circular arc is fixed, while the receiving blade shaft 11 is provided with a groove-shaped receiving blade 14 in the circumferential direction, and the rotating groove cutting blade 13 is connected to the receiving shaft 11 in FIG. As described above, the belt-shaped portion 15 of the corrugated cardboard sheet C is punched out by entering the receiving blade 14, thereby forming the groove 6.

[0004] Further, a square cutting blade 21 is fixed to the groove cutting blade 13 so as to project obliquely from the side thereof.
According to its own rotation, the cardboard sheet C is moved to the outer peripheral surface 16 of the receiving blade.
As shown in FIG. 28, the above-described square cutting 7 is performed from the vicinity of the inner end of the groove 6 to the outer edge thereof. As shown in FIG. 23, when performing the square cutting 7 at two places, for example, the unit of the groove cutting blade 13 and the square cutting blade 21 of FIG. 26 is attached to two places on the outer periphery of the slotter shaft.

[0005]

FIG. 25 shows a state in which a corrugated cardboard sheet having undergone the above-described grooved and square cut is assembled in a corrugated cardboard case P. FIG. 25A shows the most common cardboard case, in which a gluing margin 9a based on the protruding portion 9 is formed to fit within the height of the main body B of the case P. However, in this type of case P, there is a case where an inconvenience that the corner of the article is easily caught on the upper end of the glue allowance 9a occurs when trying to store an article that just fits in the case. Therefore,
As shown in FIG. 25B, there may be a case where a case P is desired in which the glue allowance 9a is extended to the side of the flap F1 so as to be stuck to each other, so that it is hard to be caught by an article.

By the way, when the order of cutting is changed between the case where the glue allowance 9a is as shown in FIG. 25a and the case where the glue allowance 9a is as shown in FIG. 25b, FIG.
Since the length of the protruding portion 9 is different as shown in FIG. 24b, the dicing position 7 must be changed accordingly. Conventionally, in such a case, the current square cutting blade 2
1 must be replaced with another square cutting blade whose relative position to the groove cutting blade 13 has been changed, the replacement work is complicated, and the adjustment work after replacement is also troublesome.

It is an object of the present invention to provide a simple and quick changeover of the setup by eliminating the need to replace the square cutting blade even when the position of the square cutting changes due to an order change.

[0008]

According to the present invention, in order to solve the above-mentioned problems, a slotter shaft having a grooving blade and a square cutting blade and a receiving blade shaft receiving the same are rotated in directions opposite to each other. In a slotter slicing device that cuts an end portion of a corrugated cardboard sheet supplied between these two shafts by the grooving blade and the squaring blade, a desired portion is provided in a circumferential direction of the slotter shaft on a side surface of the grooving blade. At least two or more square cutting blades are provided at intervals, and the square cutting blade can be moved between a cutting position where the cardboard sheet is cut with respect to a path line of the cardboard sheet and a retracting position where cutting is not performed. And a slotter for a slotter in a corrugated sheet box making machine.

Further, a slotter shaft having a groove cutting blade and a square cutting blade, and a receiving blade shaft for receiving the same, rotate in opposite directions to each other, and move the end of the corrugated cardboard sheet supplied between these shafts to the above-mentioned position. In the slitter of the slotter for cutting by the groove cutting blade and the square cutting blade, between a cutting position for cutting the corrugated cardboard sheet and a retreat position where the same cutting is not performed, with respect to the path line of the corrugated cardboard sheet. A first blade provided so as to be capable of approaching / separating and arranged at a predetermined position on the slotter shaft corresponding to one of the two types of slicing positions, and also corresponding to the other of the two types of squaring positions. A square cutting blade including a second blade disposed at a predetermined distance from the first blade in a circumferential direction of the slotter shaft, and selectively cutting any one of the first blade and the second blade at the cutting position. And by A slitter for a slotter in a corrugated cardboard sheet making machine, wherein a corrugated sheet is selectively cut at any one of the two types of cut positions different from each other in the feed direction. It is.

A slotter shaft having a groove cutting blade and a square cutting blade, and a receiving blade shaft receiving the same, rotate in opposite directions to each other, and move the end of the corrugated cardboard sheet supplied between the two shafts to the aforementioned position. In a slitter slicing device for cutting by a grooving blade and the square cutting blade, at least two slits are provided at a desired interval in a circumferential direction of a slotter shaft on a side surface of the grooving blade.
One or more square cutting blades are provided, and one of the square cutting blades is between a cutting position for cutting the corrugated cardboard sheet with respect to a path line of the corrugated cardboard sheet with respect to the side surface of the groove cutting blade, and a retracting position where cutting is not performed. And a slicing device for a slotter in a corrugated cardboard sheet making machine, wherein the slicing device is provided so as to be movable.

[0011]

Embodiments of the present invention will be described below with reference to embodiments shown in the drawings. FIG. 1 schematically illustrates a slotter slicing apparatus according to an embodiment of the present invention. In the slitter slicing device 4, a slotter shaft 10 is provided on the upper side, and a receiving blade shaft 11 is provided on the lower side, and the receiving blade shaft 11 is the same as the conventional one. In the slotter shaft 10,
A disk or cylindrical slotter holder 17 is fixed,
The slotter holder 17 includes the groove cutting blade 1 as described above.
3 is fixed so as to protrude from the outer periphery of the slotter holder 17. The slotter holder 17 is provided with a blade mounting swinging member (hereinafter simply referred to as a swinging member) 20 via the groove cutting blade 13, and the swinging member 20 is provided with a square cutting blade 21.
Is provided so as to substantially contact the outer peripheral surface 16 of the receiving blade on the receiving shaft 11 side.

As shown in FIG. 24, in order to cut the corrugated cardboard sheet C at two positions before and after in the feed direction, the square cutting blade 21 shown in FIG.
7 (hereinafter, a square cutting blade on the leading side in the rotational circumferential direction of the slotter shaft 10 is referred to as a leading side square cutting edge 21A, and a square cutting blade on the following side is referred to as a following side cutting edge. Square cutting blade 21B). Each of the square cutting blades 21A and 21B has substantially the same configuration, and includes a first blade 21a fixed to one end of the swinging member 20 and a second blade 21b fixed to the other end. In the following, a more detailed structure of the slotter squaring device 4 will be described with reference to the leading side slashing blade 21A in FIG.

First, as shown in FIG. 3, the swing member 20
In the middle part, the slotter shaft 10 is rotated by the swinging shaft 22 with respect to the slotter holder 17 which rotates integrally with the slotter shaft 10.
It is swingably mounted in a plane orthogonal to the axis of FIG. One end of the swing member 20 across the swing shaft 22 is used as a first blade mount 20a for attaching the first blade 21a, and the other end is used for attaching the second blade 21b. The second blade mount 20b is provided. In the present embodiment, the swing member 20 is provided with a recess 17 that is opened to the peripheral surface in a form in which a part of the slotter holder 17 is cut out.
a is formed, and the swing member 20 having an arc shape is accommodated in the recess 17a.

In FIG. 1, when the swinging member 20 swings, the first blade 21a and the second blade 21b respectively move between a cutting position where the corrugated cardboard sheet C is cut and a retracting position where the cutting is not performed. The cardboard sheet C approaches and separates from the pass line PL. Specifically, the swing member 20
When the first blade mounting base 20a side protrudes as shown in FIG. 4, the opposite second blade mounting base 20b retracts, and conversely, as shown in FIG. 5, when the first blade mounting base 20a side retracts. The second blade mount 20b protrudes. In the former case, the first blade 21a is at the cutting position and the second blade 21b is at the retracted position (first state), and in the latter case, the opposite is true (second state).
Thereby, a mechanism for performing the square cutting by selectively using the first blade 21a or the second blade 21b can be easily realized by the swing of the swing member 20. In addition, since the two blade mounts 20a and 20b are integrated in the form of the swinging member 20, the number of components is reduced, and the cost of the apparatus can be reduced.

Next, in FIG. 3, the first blade 21a and the second blade 21b are moved toward and away from the path line of the corrugated cardboard sheet via the swinging member 20 only when each blade 21a and the second blade 21b are moved.
blade moving member 2 provided corresponding to a and 21b
4,25. These blade moving members 24 and 25 are provided so as to be movable in the axial direction with respect to the slotter shaft 10, and move the corresponding first blade 21a and second blade 21b based on the displacement in the axial direction. .

The blade moving members 24 and 25 are provided in contact with the corresponding blade mounts 20a and 20b (or may be indirect contact via other members), and have their own axial displacement. Is converted into a radial displacement of the slotter shaft 10 (ie, a swing displacement of the swing member 20) and transmitted to the blade mounts 20a and 20b. By using the cam member, the moving mechanism for moving the first blade 21a and the second blade 21b closer to and away from each other can be configured very simply. Hereinafter, the blade moving member 24 provided corresponding to the first blade mounting base 20a is referred to as the first cam member 24, the second blade mounting base 2 or the like.
The blade moving member 25 provided corresponding to 0b is referred to as a second cam member 25.

Specifically, as shown in FIG. 1, the blade mounts 20a and 20b have grooves (hereinafter, referred to as the former) which allow the corresponding cam members 24 and 25 to move in and out in the axial direction of the slotter shaft 10, respectively. The first groove portion and the latter are also referred to as a second groove portion) 26 and 27 are formed. Then, each of the cam members 24, 25 has a bottom 26a, 27a of the groove 26, 27.
The cam sliding surface 24 whose surface in contact with is inclined in the axial direction.
b, 25b, and the bottoms 26a of the grooves 26, 27,
27a is also a slope corresponding to this (see FIGS. 4 and 5). With this configuration, the blade mounts 20a, 20b
(I.e., grooves 26, 27 formed in swing member 20)
By simply moving the cam members 24 and 25 in and out, the swing drive of the swing member 20 and, consequently, the drive of approaching and separating the blade mounts 20a and 20b to and from the pass line PL can be easily performed.

In this embodiment, the cam members 24, 25
Is formed in a plate shape, and the bottom surfaces 26 of the groove portions 26 and 27 are formed.
Ends 24b and 25b corresponding to a and 27a are cam sliding surfaces.

The two cam members (blade moving members) 24,
Reference numeral 25 denotes two different positions in the axial direction of the slotter shaft 10, specifically, a first position pushed into the corresponding groove portions 26a and 27a as shown in FIG. It is designed to reciprocate between a second position partially withdrawn from the grooves 26a, 27a. Here, as shown in FIG. 4 and FIG.
Bottom 26a and cam sliding surface 24b of first cam member 24
The inclination of the bottom 27a of the second groove 27 and the cam sliding surface 25b of the second cam member 25 are opposite to each other.

As a result, the two cam members 24 and 25 are
In the first position shown in FIG. 5, the first blade 21a is in the cutting position, and the second blade 21b is in the first position in the retracted position, and when it is in the second position as shown in FIG. It becomes the second state. In this case, the first position in FIG.
Is a cutting corresponding position, and 25 is a retracting corresponding position. The second position in FIG.
Is a retreat corresponding position, and 25 is a cut corresponding position. Here, the cam members 24 and 25 constitute a blade position switching mechanism, and the blade position switching mechanism between the first state and the second state is defined by two cam members 24 and 25.
Can be realized by a simple mechanism of integrally reciprocating.

Next, as shown in FIG.
A ring-shaped moving member holder 30 is provided on the outside of the member so as to be rotatable integrally with the slitter shaft 10 and to be movable in the axial direction. Then, each of the cam members 24 and 25 (FIG. 2)
Only 24 is shown), but the movable member holder 30
(The main body portion 30a) and moves along the slotter shaft 10 integrally therewith. In this configuration, the ring-shaped moving member holder 30 only rotates, so to speak, around the axis of the slotter shaft 10, so that even in a rotating state, the sliding movement of the moving member holder 30 along the axis is performed relatively easily. be able to. In addition,
As shown in FIG. 6, the main body 30a of the moving member holder 30
Is a cam member 2 at its inner peripheral edge (or outer peripheral edge).
The cam members 24 and 25 are integrated by fitting into the grooves 24a and 25a formed on the sides 4 and 25, respectively.

Next, the movable member holder 30 is moved along the slotter shaft 10 by the actuator 40 whose position is fixed. The actuator 40 is connected in a state where the moving member holder 30 is rotating together with the slotter shaft 10 while allowing the axial movement thereof. This makes it possible to perform the setup change of the square cutting position without stopping the apparatus, and it is possible to further improve the production efficiency of the cardboard sheet box making machine. Also,
The actuator 40 moves the moving member holder 30
The cam member 2 in the diameter direction of the moving member holder 30
It is connected to a position different from the engagement position of 4, 25.
Thereby, the cam members 24 and 25 and the actuator 40
Can be avoided, and the cam members 24 and 25 can be moved smoothly.

In FIG. 2, the moving member holder 30 includes the main body 30a and an auxiliary ring 30b coaxially connected thereto. The actuator 40 includes an engagement member 40a that engages with the outer peripheral edge of the auxiliary ring 30b while allowing the rotation of the auxiliary ring 30b, and the engagement member 40a and the coupling member 40f.
Through the auxiliary ring 30b and thus the moving member holder 3
Drive unit 40b for driving the actuator 0 along the slotter shaft 10
It is comprised including. In this embodiment, the engaging member 40a is moved forward and backward by a screw shaft 40c driven by a motor 40d so that the first position (FIG. 4) and the second position (FIG. 5) of the cam members 24 and 25 can be changed. The drive unit 40b is configured as a screw shaft mechanism to be moved. However, when the first position and the second position are not changed, a cylinder may be used, for example.

Further, in FIG. 2, the engaging member 40a is a frame which engages with the outer peripheral edge of the auxiliary ring 30b in the groove 40g. However, as shown in FIG. (Or flange) 30b, 3
A roller 40k that rotates in contact with the inner surface of the groove 30d formed between 0c may be used. In FIG. 11, the driving unit 4
0b is a cylinder 40s that moves the roller 40k forward and backward via the link 40r.

Returning to FIG. 1, the square cutting blade 21B on the trailing side (the side where no cutting is performed in the figure) in the rotation direction of the slotter shaft 10 is substantially the same as the square cutting blade 21 on the preceding side described above. And the common moving member holder 30
To start and end. However, the cam member 2 shown in FIG.
The inclination directions of the cam sliding surfaces 24b and 25b (and the corresponding groove bottoms 26a and 27a) of the 4 and 25 are set to be opposite to those of the leading side. As a result, when the cam members 24 and 25 are in the first position, the first blade 21a is in the retracted position and the second blade 21b is in the second position in the cutting position. Of the first state.

[0026]

The operation of the slitter slicing device 4 will be described below. That is, the moving member holder 30 is moved by the actuator 40 shown in FIG.
4 and 25 are pushed toward the swinging member 20 to be the first position shown in FIG. Thereby, the leading-side square cutting blade 21
The first cam member 2 in which the first blade mounting 20a side of the swing member 20 has a downward slope in the pushing direction indicated by the arrow in the drawing.
4, while the first blade 21a is at the cutting position, while the second cam member 25 on the opposite side has an upward slope in the pushing direction, so the second blade mounting 20b is retracted, and the second blade 21b is moved. It becomes a retracted position (first state). On the other hand, since the slope of the cam sliding surfaces of the cam members 24 and 25 on the trailing-side square cutting blade 21B is opposite to the above, the first blade 21a becomes the retracted position value and the second blade 21b is cut. Position.

When the square cutting is performed in this state, as shown in FIG. 8, the first blade 21a of the preceding square cutting blade 21 is at the cutting position, so that the corrugated cardboard sheet C is cut. Since the two blades 21b are in the retracted position, the two blades 21b are swung, so to speak, without cutting. On the other hand, in the trailing-side square cutting blade 21B, the reverse is performed as shown in FIG. As a result, as shown in FIG. 7, the blades located on the outer side in the circumferential direction of the slotter holder 17 (the leading side 21A is 21a,
The trailing side 21B makes a cut at 21b), and FIG.
As shown in FIG. 25B (or FIG. 25B), the corners are cut so that the protruding portion 9 becomes longer.

On the other hand, the cam members 24 and 25 are
5 and the second position shown in FIG. 5, the leading-side square cutting blade 21 </ b> A has the second blade mounting base 20 b side of the swinging member 20 having a downward slope in the drawing direction indicated by an arrow in the drawing. And is pushed by the second cam member 25 to
While the second blade 21b is at the cutting position, the first cam member 24 on the opposite side has an upward slope in the pull-out direction, so that the first blade mounting base 20a is retracted, and the first blade 21a is at the retracted position (second position). Status). On the other hand, the trailing-side square cutting blade 21B and the second blade 21b are in the retracted position, and the first blade 21a is in the cutting position.

When the square cutting is performed in this state, as shown in FIG. 1, the blades located on the inner side in the circumferential direction of the slotter holder 17 (the leading side 21A is 21b and the trailing side 21B is 21a). 24a (or FIG. 25a), and the corners are cut so that the protruding portion 9 is shortened.

Note that, as shown in FIG.
4 and 25 (represented by 24 in the drawing) correspond to the cutting positions by the rotation of the motor 40d in FIG.
Of the first blade 21a and the second blade 21b at the cutting position (the first blade 21
(represented by a) of the corrugated cardboard sheet toward the pass line can be changed. That is, as shown in FIG. 1, the square cutting blade 21 </ b> A cuts the corrugated cardboard sheet C by making contact with the outer peripheral surface 16 of the receiving blade in a so-called kiss-touch state (a state as close as possible), but is supplied. The thickness of the corrugated cardboard sheet C may change as shown in FIG. In this case, the protruding amount is increased when the sheet thickness is increased, and conversely, decreased when the sheet thickness is decreased. According to the above-mentioned method, if it is possible to set an appropriate protrusion amount of the square cutting blade according to the thickness of the corrugated cardboard sheet to be processed, it is possible to easily change the thickness of the corrugated cardboard sheet in a short time. , Leading to improved production efficiency of corrugated sheet box making machines.

In the slitter squaring device 4 described above, the slicing blades 21A, 21A are provided corresponding to the groove cutting blades 13 provided at two locations on the outer periphery of the slotter shaft 10.
21B are provided respectively. In this case, in order to change the squaring position according to the length of the corrugated cardboard sheet to be processed, one of the two squaring blades 21A and 21B is attached to the other with the mounting phase angle (that is, the slotter shaft 10). (Fixed position in the circumferential direction of the camera). One example is shown in FIG. In this case, the slotter shaft 10 is rotatably attached to the device frames 50, 50, and is driven to rotate by a drive motor (not shown). In the slotter shaft 10,
Flange-shaped holders 52 are fixedly attached to the slotter shaft 10 at predetermined intervals in the axial direction, and a fixed-side groove cutting blade 13f is attached to each of them. A fixed-side square cutting blade 21f is attached to the outermost holder 52 for performing the square cutting.

Next, on the outer periphery of each holder 52, a ring gear 54 of an outer blade is attached so as to be rotatable relative to the holder 52, and the movable side groove cutting blade 13 is attached to each.
m, and the outermost one is provided with a movable side cutting edge 21m. On the other hand, the blade position adjusting shaft 56 is provided on the device frames 50, 50 so as to be substantially parallel to the slotter shaft 10.
Is provided. An adjusting gear 60 meshing with each of the ring gears 54 is attached to the blade position adjusting shaft 56, and is rotated and driven by a driving motor 58 provided on the frame 50.

As shown in FIG. 13, the rocking member 20 is rotatably mounted on the outer peripheral surface of the holder 52. The rocking member 20 extends along the axial direction of the slotter shaft 10. The cam members 24 and 25 (in FIG.
4 is shown), a guide portion 52a such as a groove for guiding the slide movement for entering and exiting is formed. Further, in this example, the ring-shaped moving member holder 30 fitted into the cam members 24 and 25 is non-rotating around the slotter shaft 10, and the cylinder 140 is attached to the non-rotating fixed frame 140a. Thereby, it is possible to advance and retreat in the axial direction of the slotter shaft 10. When the piston rod 140d of the cylinder 140 is retracted, the movable member holder 30 is retracted by following the urging force of the spring 140c provided between the movable member holder 30 and the spring receiving portion 140b protruding from the fixed frame 140a.

When the drive motor 58 is operated, the adjusting gear 60 is rotated by the blade position adjusting shaft 56, and the ring gear 54 meshing with the adjusting gear 60 is rotated on the corresponding holder 52.
Accordingly, the moving-side groove cutting blade 13m and the moving-side square cutting blade 21m rotate relative to the fixed-side groove cutting blade 13f and the fixed-side square cutting blade 21f, respectively, in accordance with the amount of rotation of the blade position adjusting shaft 56. , The mounting phase angles of both are changed and adjusted. FIG. 14 shows that the drive motor 58 is connected to the blade position adjusting shaft 5 via a well-known harmonic drive 170.
6 shows an example of attachment. The rotation of the slotter shaft 10 is transmitted to the blade position adjusting shaft 56 via the gear 174 attached to the slotter shaft 10 and the main gear 175 of the harmonic drive 170.

When the drive motor 58 is operated, the outer race 172 on the flexible cup further disposed outside the inner race 173 is rotated via the inner race 173 in which the elliptical bearing 173a is fitted on the outer periphery. A planet gear 172a is engraved on the outer periphery of the outer race 172, and meshes with an inner sun gear 171 that rotates coaxially with the main gear 175. Further, the number of teeth of the planet gear 172a is 1 to less than the number of teeth of the sun gear 171.
It is set to be about two teeth less. Each time the motor 58 rotates the planetary gear 172a once, the sun gear 1
The rotation phase of 71, that is, the slotter shaft 10 with respect to the planetary gear 172a, that is, the blade position adjusting shaft 56, changes in a direction delayed by an amount corresponding to the difference in the number of teeth. Thereby, the moving side groove cutting blade 13m and the moving side square cutting blade 21m
Means that the mounting phase angle changes with respect to the fixed-side groove cutting blade 13f and the fixed-side square cutting blade 21f.

It should be noted that, as shown in FIG.
There is also a method in which the control device 60 adjusts the rotation speed of the drive motor 59 of zero and the rotation speed of the drive motor 58 of the blade position adjusting shaft 56 to change the mounting phase angle. That is, the control device 60 controls the position adjusting shaft 5 with the slotter shaft 10 so that the ring gear 54 does not rotate on the holder 52 at all times.
The rotation of each of the drive motors 59 and 58 is controlled to a predetermined speed. When the phase angle is changed, the ring gear 54 is rotated on the holder 52 by relatively slowing or advancing the rotation speed of the drive motor 59 with respect to the rotation speed of the drive motor 58. To change.

As shown in FIG. 16, when the length of the corrugated cardboard sheet is large or the like, the front side cutting edge 21A and the rear side cutting edge 21B of the previous operation are kept at a predetermined distance in the sheet feeding direction. It is also possible to constitute a so-called double slotter by attaching to the individual slotter shafts 10A and 10B arranged separately.

[0038]

Next, another embodiment of the present invention will be described. In another embodiment of the present invention, as shown in FIG. 17, groove cutting blades 13A and 13B are provided on the peripheral surface of a slotter holder 17 that can slide on the slotter shaft 10 in the axial direction. One of the groove cutting blades 13A and 13B is a slotter holder 1.
7 is a movable blade fixedly attached to the other, and the other is provided to be movable in the circumferential direction on the peripheral surface of the one groove cutting blade slotter holder 17. When the cardboard box making machine is a double slotter, the slotter holder 17 is used as described above.
, Only one set of groove cutting blades is fixedly attached.
Here, a slotter having a configuration in which two sets of groove cutting blades 13A and 13B are provided for the slotter holder 17 will be described.

Next, the groove cutting blade 13 and its peripheral structure will be described in detail. The groove cutting blade 13 is fixed to the groove cutting blade 13A of the fixed blade via a bolt. 13B is mounted on a rotating ring (not shown) that rotates in the circumferential direction with respect to the slotter holder 17. Next, the relationship between the grooving blade 13 and the squaring device 70 will be described. In the slicing device of the slotter according to another embodiment of the present invention, the slicing device 70A is attached to the slotter blade 17A of the fixed blade. The slicing device 70 is attached to or attached to the groove cutting blade 13B of the moving blade.
Since the relationship between the grooving blade 13 and the squaring device 70 is the same only by the difference between whether or not B is attached to a rotating ring (not shown), the slicing device 70A mounted on the slicing blade 13A of the fixed blade will be described here. .

As shown in FIG. 18A, the slicing device 70A has two sets of slicing blades 71a,
71b is provided on the side surface of the groove cutting blade 13A on the peripheral surface of the slotter holder 17 via the square cutting blade seats 72a and 72b. One of the square cutting blades 71b has a bolt 7 on the groove cutting blade 13A.
3, but the other square cutting blade 71a is not fixed to the groove cutting blade 13A,
The slotter holder 17 is provided slidably in the axial direction on the peripheral surface. The other square cutting blade 71b slides in the axial direction on the peripheral surface of the slotter holder 17 by a nut 80c attached to a cylinder rod 80b of an air cylinder 80 attached to a slotter yoke 77 via a seat 80a. The fixed shifter 81 receives the square cutting blade 71a and the square cutting blade seat 72a is fitted to the ring 75 fixed with the bolt 76. The shifter 81 is guided via a slider 79 by a guide rod 78 fixedly attached to a slotter yoke 77. As shown in FIGS. 18a and 18b, the other square cutting blade 71a slides in the axial direction on the peripheral surface of the slotter holder 17 due to the expansion and contraction of the air cylinder 80, and the groove cutting blade 1
3A can be approached and separated. In addition,
Reference numerals 14 and 16 in FIG. 18 denote the aforementioned receiving blade and the outer peripheral surface of the receiving blade.

As described above, the groove cutting blade 1 of the moving blade 1
The squaring device 70B provided on the fixed blade grooving blade 13A described above is provided with the squaring device 70A provided on the fixed blade grooving blade 13A.
The difference is that the groove cutting blade 13B and the square cutting device 70B are provided on a rotating ring (not shown). The device for sliding the square cutting blade 71a in the slotter axis direction may be provided separately from the above-described air cylinder 80 and other devices, or may be a device for sliding the square cutting device 70A provided on the fixed blade 13A. May be shared.

[0042]

Next, the operation of another embodiment of the present invention will be described. In another embodiment of the present invention, in order to form a gluing allowance 9 as shown in FIGS. 24a and 24b, the cutting positions of the respective square cutting blades 71a and 71b are positioned and cut as follows. When cutting the gluing allowance 9 as shown in FIG.
B shrinks the cylinder rod 80b of the air cylinder 80 as shown in FIGS. 18a, 19a, and 19b to bring the square cutting blade 71a closer to or into contact with the groove cutting blades 13A and 13B. In this state, when the sheet C is passed through the slitter 4 of the slotter, each of the square cutting blades 71a,
As shown in FIG. 21A, the square cutting position of the square cutting blade 7 with respect to the sheet C is changed.
1a to 7a, and also the square cutting blade 71b to 7
Cutting is performed at each position b. That is, the end piece of paper 8 cut by the square cutting blades 71a and 71b is 8
a and 8b.

Subsequently, a gluing allowance 9 as shown in FIG.
When cutting the pieces, the square cutting devices 70A and 70B
20a and 20a and 20b, the cylinder rod 80b of the air cylinder 80 is extended to
The square cutting blade 71a is separated from A and 13B. In this state, when the sheet C is passed through the slotting device 4 of the slotter, the square cutting blade 71b
21b, the sheet C is cut at a position 7b by the square cutting blade 71b with respect to the sheet C, but the square cutting blade 71a interferes with the outer peripheral surface 16 of the receiving blade receiving the square cutting blade 71a. Therefore, the sheet c is not cut. That is, the end piece of paper 8 cut by the square cutting blade 71b.
Is cut to 8c.

As described above, the desired glue allowance 9 can be easily cut and formed only by sliding the arbitrary square cutting blade 71 in the slotter axial direction with respect to the groove cutting blade 13.

[0045]

According to the present invention, according to the present invention, two first and second blades are mounted on a slotter shaft as square cutting blades, and either the first blade or the second blade is selected. By setting the cutting position as a target, it is possible to cope with two cut orders at different positions. This makes it possible to easily and easily change the square cutting position in a short time as compared with the conventionally required square cutting blade replacement work, which leads to an improvement in the production efficiency of the cardboard sheet making machine.

In this case, the first blade and the second blade are provided so as to be movable in the axial direction with respect to the slotter shaft corresponding to the first blade and the second blade. A blade moving member that moves toward and away from the sheet pass line can be provided. Since such a blade moving member can be configured so as not to rotate with the slotter shaft, it is possible to relatively easily switch the first blade and the second blade even during rotation of the slotter shaft, for example. Thereby, for example, since the change of the square cutting position can be performed without stopping the cutting line, it is possible to further improve the production efficiency of the cardboard sheet box making machine.

According to another embodiment of the present invention, the first and second square cutting edges are set to the cutting position and one of the first and second cutting edges is set to the retracted position from the cutting position. By doing so, it is possible to cope with two dicing cut orders at different positions. This makes it possible to easily and easily change the square cutting position in a short time as compared with the conventionally required square cutting blade replacement work, which leads to an improvement in the production efficiency of the cardboard sheet making machine.

In this case, since one of the square cutting blades can be easily moved in the axial direction of the slotter on the slotter holder, it is possible to change the setting of the square cutting position without stopping the cutting line. It is possible to further improve the production efficiency of the box making machine.

Further, when cutting with the first and second blades of the square cutting blade, the paper chip cut by the square cutting blade is finely divided, so that the paper chip can be removed smoothly and the paper chip can be cut mechanically. It does not accumulate in the machine or get stuck and cause trouble inside the machine.

[Brief description of the drawings]

FIG. 1 is a diagram showing a main part of a slitter for a slotter which is an example of the present disclosure.

FIG. 2 is a diagram schematically showing a driving mechanism of the moving member holder.

FIG. 3 is a perspective view showing a configuration of a square cutting blade.

FIG. 4 is an explanatory diagram showing a state of a first position in the blade position switching.

FIG. 5 is an explanatory diagram showing a state of a second position.

FIG. 6 is a perspective view of a moving member holder.

FIG. 7 is an explanatory diagram of an operation of a slitter for a slotter.

FIG. 8 is an explanatory view of the operation of the main part.

FIG. 9 is another operation explanatory view.

FIG. 10 is a view for explaining a method of adjusting the protrusion of the square cutting blade.

FIG. 11 is a view schematically showing another driving mechanism of the moving member holder.

FIG. 12 is a front view of a mechanism for changing a mounting phase angle of two square cutting blades on a slotter shaft.

FIG. 13 is an enlarged front view showing a switching mechanism of a first blade and a second blade of the square cutting blade of FIG. 12;

FIG. 14 is a front view showing an example of a mechanism for changing a mounting phase angle of a square cutting blade using a harmonic drive.

FIG. 15 is a front view showing an example of a mechanism for changing a mounting phase angle of a square cutting blade by adjusting a slotter shaft with a position adjusting shaft by using a rotation control device of each drive motor.

FIG. 16 is a conceptual diagram of a double slotter.

FIG. 17 is a side view of a squaring device according to another embodiment of the present invention.

FIG. 18 is a sectional view in FIG.

FIG. 19 is a diagram showing an operation according to another embodiment of the present invention.

FIG. 20 is a diagram showing an operation according to another embodiment of the present invention.

FIG. 21 is a diagram showing a state in which a corner is cut according to another embodiment of the present invention;

FIG. 22 is an explanatory view of a general cardboard box making machine.

FIG. 23 is a plan view showing grooves and the like formed on the corrugated cardboard sheet during box making.

FIG. 24 is a view for explaining how the length of the protruding portion is changed by changing the dicing pattern in FIG. 23;

FIG. 25 is an explanatory diagram of the operation of the protruding portion in FIG. 24.

FIG. 26 is a perspective view of a main part of a slitter for a slotter.

FIG. 27 is an explanatory diagram of the action of the groove cutting.

FIG. 28 is an enlarged view of a grooved and squared portion.

[Explanation of symbols]

 Reference Signs List 4 slotter / square cutting device 10 slotter shaft 11 receiving blade shaft 13 groove cutting blade 14 receiving blade 16 receiving blade outer peripheral surface 17 slotter holder 20 blade mounting swinging member 20a first blade mounting base 20b second blade mounting base 21A, 21B square Cutting blade 21a First blade 21b Second blade 22 Swing shaft 24 First cam member (first blade moving member) 25 Second cam member (second blade moving member) 24b, 25b Cam sliding surface 26, 27 Groove 26a , 27a Bottom 30 Moving member holder 40 Actuator 70A First blade mounting base 70B Second blade mounting base 71 Square cutting blade 71a First blade 71b Second blade C Corrugated cardboard sheet

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[Procedure amendment]

[Submission date] September 28, 1999 (1999.9.2)
8)

[Procedure amendment 1]

[Document name to be amended] Drawing

[Correction target item name] All figures

[Correction method] Change

[Correction contents]

FIG. 11

FIG.

FIG.

FIG. 2

FIG. 4

FIG. 5

FIG. 16

FIG. 3

FIG. 6

FIG. 7

FIG. 8

FIG. 27

FIG. 9

FIG. 10

FIG.

FIG. 13

FIG. 21

FIG. 28

FIG. 14

FIG.

FIG.

FIG.

FIG.

FIG. 23

FIG.

FIG. 24

FIG. 25

FIG. 26

Claims (19)

[Claims] 1. A slotter shaft having a grooving blade and a square cutting blade, and a receiving blade shaft receiving the same, rotate in opposite directions to each other, and feed the end of the corrugated cardboard sheet supplied between the two shafts. In a slotter slicing device for cutting with a grooving blade and the squaring blade, at least two or more squaring blades are provided at desired intervals in a circumferential direction of a slotter shaft on a side surface of the slicing blade, The slotter of the cardboard sheet box making machine is characterized in that the square cutting blade is movably provided between a cutting position for cutting the cardboard sheet with respect to a path line of the cardboard sheet and a retreat position where cutting is not performed. Square cutting device. 2. A slotter shaft having a grooving blade and a square cutting blade, and a receiving blade shaft receiving the same, are rotated in opposite directions to each other, and the end portion of the corrugated cardboard sheet supplied between the two shafts is rotated by the shaft. In a slotting device for a slotter that cuts with a groove cutting blade and the square cutting blade, a cutting position for cutting the corrugated cardboard sheet, and a retreat position where cutting is not performed, with respect to a pass line of the corrugated cardboard sheet. A first blade provided so as to be capable of approaching / separating and arranged at a predetermined position on the slotter shaft corresponding to one of the two types of slicing positions, and also corresponding to the other of the two types of squaring positions. A square cutting blade including a second blade disposed at a predetermined distance from the first blade in the circumferential direction of the slotter shaft, and selectively cutting any one of the first blade and the second blade at the cutting position. And the step Rushito diced apparatus slotter in different the two cubes located cardboard sheet box making machine, characterized in that so as to selectively perform the diced cut in either in the feeding direction with respect. 3. A leading-side square cutting blade for cutting the leading side of the corrugated cardboard sheet in the feed direction and a rear-side square cutting blade for cutting the trailing side of the cardboard sheet in the same direction. It is provided at a position different from each other in the rotational circumferential direction of the slotter shaft, and at least one of the leading-side square cutting blade and the trailing-side square cutting blade is selectively squared at one of two types of square cutting positions. The slotting device for a slotter in a cardboard sheet box making machine according to claim 2, wherein the device is provided with the first blade and the second blade for performing the cutting. 4. A preceding-side square cutting blade for cutting the leading side of the corrugated sheet in the feed direction, and a trailing-side square cutting blade for cutting the trailing side of the cardboard sheet in the same direction. Attached to individual slotter shafts arranged at a predetermined distance in the sheet feeding direction, at least one of the leading side cutting edge and the trailing side cutting edge has two types of cutting positions. The slotter for a slotter in a corrugated cardboard sheet making machine according to claim 2, wherein the slotter is provided with the first blade and the second blade that selectively perform square cutting in any of the above. 5. An apparatus according to claim 1, wherein said first blade and said second blade are provided movably in an axial direction with respect to said slotter shaft, and said first blade and said second blade are respectively moved based on said own axial displacement. The slotting device for a slotter in a cardboard sheet box making machine according to any one of claims 2 to 4, further comprising a blade moving member that moves the blade toward and away from the path line of the cardboard sheet. 6. The blade moving member is provided so as to be able to reciprocate between two different positions in the axial direction of the slotter shaft, and when the blade moving member is located at one of the two positions (hereinafter, referred to as a cutting corresponding position), The corresponding one of the first blade and the second blade is a cutting position, and when it is located at the other (hereinafter, referred to as a retreat corresponding position), it is also a retreat position,
By changing the cutting corresponding position in the axial direction, the amount of projection of the first blade and the second blade toward the pass line with respect to the corrugated cardboard sheet when located at the cutting position is changed. 6. A slicing device for a slotter in a cardboard box making machine according to claim 5. 7. The blade according to claim 1, wherein the first blade and the second blade are respectively mounted on a blade mount movably provided in a plane perpendicular to the axis of the slotter shaft. A cam member that is provided directly or indirectly in contact with the mounting base via another member, and that converts the axial displacement of the cam member into the radial displacement with respect to the blade mounting base and transmits the cam member. The slotting device for a slotter in a corrugated cardboard sheet making machine according to claim 5 or 6, which is configured to include. 8. A groove for allowing the cam member to move in and out in the axial direction of the slotter shaft is formed in the blade mount, and a surface of the cam member that is in contact with the bottom of the groove is inclined in the axial direction. 8. A slotting device for a slotter in a cardboard sheet box making machine according to claim 7, wherein a cam sliding surface is provided, and a bottom surface of said groove portion is also a corresponding inclined surface. 9. The blade moving member includes a first blade moving member corresponding to the first blade and a second blade moving member corresponding to the second blade, and the first blade moving member and the second blade. The moving member is provided so as to be able to reciprocate integrally between two positions different from each other in the axial direction of the slotter shaft. When the moving member is located at one of the two positions, the first blade and the second blade are brought into the first state. The slotting device for a slotter in a cardboard sheet box making machine according to any one of claims 5 to 8, wherein the second state is established when the slotting device is located on the other side. 10. The blade mounting base includes a first blade mounting base for mounting the first blade, and a second blade mounting base for mounting the second blade, and the cam member includes the second blade mounting base. A first cam member that moves in and out of the first groove portion on the one blade mounting base side, and a second cam member that moves in and out of the second groove portion on the second blade mounting base side; 10. The slotter according to claim 9, wherein the inclination of the cam sliding surface of the first cam member, the bottom of the second groove, and the cam sliding surface of the second cam member are opposite to each other. Slicing device. 11. A blade mounting swing member is attached to a slotter holder which rotates integrally with the slotter shaft so as to be swingable in a plane orthogonal to the axis of the slotter shaft by a swing shaft at an intermediate portion thereof. One end side of the blade mounting rocking member that sandwiches the rocking shaft is a first blade mounting base for mounting the first blade,
The slotter for a slotter in a cardboard sheet box making machine according to any one of claims 7 to 10, wherein the other end side is also a second blade mounting base for mounting the second blade. 12. A ring-shaped moving member holder is provided outside the slotter shaft so as to be rotatable integrally with the slotter shaft and axially movable, and the blade moving member is attached to the moving member holder. 12. A slotting device for a slotter in a corrugated cardboard sheet making machine according to any one of claims 5 to 11, wherein the slotter is moved along the slotter shaft integrally therewith. 13. The blade-shaped moving member holder is integrated with the blade-moving member by fitting the outer peripheral edge or the inner peripheral edge of the ring-shaped moving member holder into a groove formed on the blade moving member side. 13. A slotter for a slotter according to claim 12. 14. An actuator having a fixed position for moving said movable member holder along said slotter axis, said actuator being connected to said movable member holder so as to allow axial movement in a rotating state. Or 13
A slotter for a slotter in a corrugated sheet box making machine as described above. 15. The cardboard sheet box making machine according to claim 14, wherein the actuator is connected to the moving member holder at a position different from an engagement position of the blade moving member in a diameter direction of the moving member holder. Slicing machine for slotters. 16. A slotter shaft having a grooving blade and a square cutting blade, and a receiving blade shaft receiving the same, rotate in opposite directions to each other, and move the end portion of the corrugated cardboard sheet supplied between the two shafts. In a slotter slicing device for cutting with a grooving blade and the squaring blade, at least two or more squaring blades are provided at desired intervals in a circumferential direction of a slotter shaft on a side surface of the slicing blade, One of the square cutting blades is provided so as to be movable between a cutting position for cutting the cardboard sheet with respect to a path line of the cardboard sheet with respect to a side surface of the groove cutting blade and a retracting position where cutting is not performed. Slotter for slotter in corrugated sheet box making machine. 17. The slicing device for a slotter in a corrugated cardboard sheet box making machine according to claim 16, wherein the other of the squaring blades is fixed to a side surface of the grooving blade. 18. The slotting apparatus for a slotter in a cardboard sheet box making machine according to claim 16, wherein at least two sets of said groove cutting edge and square cutting blade are provided in the rotation circumferential direction of the slotter shaft. 19. The corrugated cardboard sheet according to claim 16, wherein said groove cutting blade and said square cutting blade are provided in a rotating circumferential direction of individual slotter shafts arranged at a predetermined distance in a sheet feeding direction. Slotter for slotter in box making machine.