JPH11138491A - Cardboard cutting facility - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cardboard cutting facility capable of automatically, quickly and reliably performing positioning of a slitter blade in relation to a blade receiver even in a contact rotating type such as a urethane roll type. SOLUTION: When a separated slitter blade 29 is brought into contact with a rotating body 42, the slitter blade 29 is approached to the rotating body 42 by an operating means 50 in a state where the slitter blade 29 is rotated. When the slitter blade 29 is brought into contact with the rotating body 42 by the approach, the rotation B of the slitter blade 29 is transmitted to the rotating body 42, the rotating body 42 is rotated C, and the rotation C is detected by a detecting means 45. The operation of the operating means 45 is automatically stopped, and therefore, positioning can be automatically, quickly and reliably performed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used for obtaining one or a plurality of corrugated boards of a desired width simultaneously by cutting one or more places in the width direction of the corrugated board with a slitter blade. It relates to a cardboard cutting facility.

[0002]

2. Description of the Related Art Conventionally, as this type of corrugated board cutting equipment, a urethane roll method and a grooved roll method have been provided. In the urethane roll system, as shown in FIG. 5, a urethane roll (blade receiver) 81 is disposed facing the slitter blade 80 from above and from the upper side, and the slitter blade 80 is driven and rotated. The corrugated cardboard 82 located below the urethane roll 81 is cut.

In the grooved roll system, as shown in FIG. 6, a slitter blade 80 is inserted into an annular groove 84 of a grooved roll (blade holder) 83 and opposed to the slitter blade 80 from above and above. Rolled roll 8
The corrugated cardboard 82 positioned below the grooved roll 83 is cut by driving and rotating the slitter blade 80.

[0004]

However, in the above-mentioned urethane roll system, since the urethane roll 81 always rotates while being in contact with the slitter blade 80, the roll life is short due to damage or the like, and the frequency of replacement is high. Become. Then, in order to extend the roll life as much as possible, the contact (touch) movement of the slitter blade 80 with respect to the urethane roll 81, that is, the alignment is carefully performed while finely adjusting the position. You cannot do it quickly because you do it. Further, when the outer diameter of the slitter blade 80 changes due to blade wear with use, the positioning must be performed frequently in accordance with the outer diameter change, which is a very troublesome operation.

Further, the above-mentioned grooved roll method is a type in which cutting is performed in a state where the slitter blade 80 enters the annular groove 84, so that fine adjustment work or the like is facilitated. A gap 85 is formed between the inner side surface 84a of the cardboard and the outer side surface 80a of the slitter blade 80, and the presence of these gaps 85 sufficiently and reliably receives (holds) the back liner 82A of the cardboard 82. ) It will be difficult. As a result, due to the gap 85 between the slitter blade 80 and the annular groove 84, a return 82a is generated at the back liner 82A, and as the blade of the slitter blade 80 wears, fluff is generated on the entire cut surface. Is reduced in commercial value.
Further, in order to reduce the gap 85, the positioning mechanism of the slitter blade 80 needs to have high accuracy, and there is a problem that the manufacturing cost including control is high.

Accordingly, the invention according to claim 1 of the present invention is a cardboard cutting equipment capable of automatically and quickly and accurately aligning a slitter blade with respect to a blade receiver while using a contact rotation type such as a urethane roll system. The purpose is to provide.

[0007]

According to one aspect of the present invention, there is provided a corrugated cardboard cutting apparatus having a slitter blade and a blade receiver opposed to the slitter blade. In the cutting equipment, the blade receiver is composed of a freely rotatable rotating body, and a slitter blade is configured to be able to move into and out of contact with the rotating body, and actuating means for performing abutting and separating movement is provided. The actuating means is characterized in that it is brought into contact with the slitter blade while rotating, and is stopped by detecting that the rotating body is rotated by the rotational force of the slitter blade by the detecting means.

Therefore, according to the first aspect of the invention, when the slitter blade which is separated is brought into contact with the rotating body, first, the slitter blade is rotated, and the operating means is used.
Bring the slitter blade close to the rotating body. When this approaching movement causes the slitter blade to contact (touch) the rotating body, the rotation of the slitter blade is transmitted to the rotating body,
By rotating the rotating body and detecting the rotation by the detecting means, the operation of the operating means can be automatically stopped.

According to a second aspect of the present invention, there is provided a cardboard cutting equipment according to the first aspect, wherein the operating means has a large stroke operating section and a fine adjustment operating section. After approaching the slitter blade to the rotating body, the approaching movement is continued by the fine adjustment operation part,
The fine adjustment operation unit is stopped by detecting that the slitter blade comes into contact with the rotating body and the rotating body is rotated by the detecting means.

Therefore, according to the second aspect of the present invention, when the slitter blade is rotated while the slitter blade is in contact with the rotating body, the slitter blade is first rotated with respect to the rotating body by operating the large stroke operating portion. But approach them with a gap. Next, the slitter blade moves (fine-adjusts) the rotating body at a low speed by the fine adjustment operation section at a low speed, and the gap gradually narrows. Then, the slitter blade is brought into contact with the rotating body to rotate the rotating body, and the rotation of the rotating body is detected by the detecting means, thereby stopping the operation of the fine adjustment operating section.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 to 3, a corrugated cardboard 1 is formed by a front liner 2, a wave liner 3, and a back liner 4. In the corrugated cardboard cutting equipment 10, the corrugated cardboard 1 is conveyed horizontally on the conveyance path 5 with the front liner 2 as a lower part. . The corrugated cardboard cutting equipment 10 has a slitter blade 29 whose blade axis 27 is lower than the transport path 5 and an idler blade whose support shaft 41 is higher than the transport path 5 and faces the slitter blade 29. A free rotating body (knife receptacle) 42 is provided. A guide plate 11 capable of receiving the front liner 2 is provided on the upper side of the slitter blade 29.

The slitter blade 29 is configured to be able to contact and separate from the rotating body 42, and is provided with an operating means 50 for performing contact and separation. This actuating means 50 rotates the rotating body 4 while rotating the slitter blade 29.
2 and has a large stroke operation section 51 and a fine adjustment operation section 61.

That is, at a position below the position where the slitter blade 29 is disposed, a frame 70 constituting the equipment main body is provided.
Are arranged in the width direction (the direction orthogonal to and horizontal to the transport path 5) A. A plurality of movable tables 12 are provided on the frame 70 via an upper guide 71 and a side guide 72.
Each is provided movably in the width direction A. A moving device (such as a motor) 13 for moving in the width direction A is provided on each movable base 12 side.

Above the frame 70, a spline shaft type rotary drive shaft 15 is disposed along the frame 70. The rotary drive shaft 15 is rotated by a bearing 16 on a side frame 73 of the equipment body. It is freely supported, and is interlocked with the rotation drive device 17 via the interlocking device 18.

A rotary drive shaft 15 is provided at each movable table 12.
A spline cylinder 20 that is spline-fitted to the inner cylinder body 2 that is externally fitted to the spline cylinder 20 and key-connected
And an outer cylindrical body 23 which is externally fitted to the inner cylindrical body 21 via a bearing 22 and is connected to the gantry 19 from the movable base 12 side.
And are arranged. Accordingly, the inner cylinder 21 is rotated integrally with the rotation drive shaft 15 via the spline cylinder 20, but is movable in the width direction A with respect to the rotation drive shaft 15. The outer cylinder 23 allows the rotation of the inner cylinder 21, but is movable in the width direction A together with the inner cylinder 21 by moving the movable base 12.

A base end of a swinging body (swing arm) 25 is externally fitted to the outer cylindrical body 23 via a bush 24,
The oscillating body 25 is configured to be able to swing up and down around the axis of the rotary drive shaft 15. The blade shaft 27 is rotatably provided at a free end of the rocking body 25 via a bearing 26. A flange-shaped mounting portion 28 is integrally formed at one end of the blade shaft 27, and a ring-plate-shaped slitter blade 29 is disposed on the mounting portion 28 and fixed by a fixing member 30. A bearing 31 is provided at an intermediate portion of the rocking body 25.
The intermediate shaft 32 is rotatably provided via the.

A transmission gear 33 is fixed to one end of the inner cylindrical body 21, and a passive gear 34 constantly meshed with the transmission gear 33 is fixed to one end of the intermediate shaft 32. The other end of the intermediate shaft 32 and the other end of the blade shaft 27 are linked by an endless linking device 35. The endless interlocking device 35 includes a transmission wheel 36 attached to the other end of the intermediate shaft 32.
A passive wheel 37 attached to the other end of the blade shaft 27,
A tension wheel 39 provided on the rocking body 25 via a support shaft 38 whose position is adjustable;
It comprises an endless rotating body (belt, timing belt, chain, etc.) 40 hung between 7, 39.

The support shaft 41 is opposed to the slitter blade 29 from above, and the side frame 73 of the equipment main body.
It is fixed to. The support shaft 41 includes a plurality of rotating bodies 4.
2, that is, the rotating bodies 42 opposed to the respective slitter blades 29 are externally fitted so as to freely rotate with the spacers 43 interposed between the rotating bodies 42. Here the rotating body 4
2 is made of, for example, urethane roll. On one side of the rotator 42, a detected part 44 indicating the rotation of the rotator 42 is provided.

Here, the detected part 44 is formed by printing a linear mark or forming irregularities in a gear shape on one side of the rotating body 42 at a predetermined angle in the circumferential direction. The detected portion 44 is formed by integrating a disk or ring made of metal or resin with one side of the rotating body 42 and printing a linear mark on the outer periphery or forming irregularities in a gear shape. Accordingly, the mark is formed by printing a mark on the side surface of the disk body integrated with one side of the rotating body 42.

The rotating body 4 is opposed to the detected part 44.
Detecting means 45 is provided for detecting the rotation of 2. The detection means 45 is composed of a sensor or the like, and is provided on the equipment body side. Then, the detecting means 45 includes the control unit 4
6 is connected.

The large-stroke operating section 51 is, for example, a cylinder type. A cylinder body 52 is connected to the movable table 12 so as to be able to swing back and forth, and a free end of a piston rod 53 is connected to the swinging body 25. They are connected so as to be relatively rotatable.

An example of the fine adjustment operation section 61 is the base 19
(E.g., motor) 62 with a reduction gear provided in
And a driving gear 64 attached to the output shaft 63; a passive gear 65 constantly meshed with the driving gear 64; and a cylindrical nut integrated with the passive gear 65 and rotatably supported on the gantry 19 side. A stopper screw shaft 67 that is screwed to the central threaded portion of the cylinder nut body 66 and that can rotate (non-rotate) only in the direction along the transport path 5 by rotation of the cylinder nut body 66; A stopper receiver 68 and the like, which are opposed to the upper end of the screw shaft 67 and are provided continuously from the rocking body 25 side.

The operating means 50, that is, the large-stroke operating section 51 and the fine-adjusting operating section 61 are configured to operate according to an instruction from the control section 46. The operation of the above embodiment will be described below.

The separation of the slitter blade 29 from the rotating body 42 is achieved by contracting the cylinder of the large-stroke operating portion 51 and forcibly rocking the rocking body 25 downward about the axis of the rotary drive shaft 15 or by rotating the cylinder. Is opened, and the rocking body 25 is rocked downward by its own weight around the axis of the rotary drive shaft 15, thereby performing the operation as shown by the solid line in FIG.

In order to bring the slitter blade 29 into contact with the rotating body 42 from this state, first, the start switch 48 on the operation panel 47 is turned on, the rotation driving device 17 is started, and the rotation driving shaft 15 is rotated. This rotary drive shaft 15
The rotation of the transmission gear 33, the passive gear 34, the intermediate shaft 32,
It is transmitted to the blade shaft 27 via the endless interlocking device 35, thereby rotating the slitter blade 29.

Subsequently, automatically or by turning on another switch on the operation panel 47, the cylinder of the large stroke operating section 51 is extended and controlled by the control of the control section 46, and the shaft of the rotary drive shaft 15 is extended. Oscillator 2 around the heart
5 is forcibly rocked upward. The upward swing of the swing body 25 is performed until the stopper receiver 68 comes into contact with the upper end of the stopper screw shaft 67 as shown in FIG. By the contact, the slitter blade 29 approaches the rotating body 42 with a certain gap (about 1 to 2 mm) S therebetween.

As described above, after the slitter blade 29 approaches the rotating body 42 by the large stroke operating section 51, the approaching movement by the fine adjustment operating section 61 is automatically continued. That is, the drive unit 62 is driven by the control of the control unit 46, and the rotation of the output shaft 63 is transmitted to the nut body 66 via the drive gear 64 and the passive gear 65, and this nut body 6
Rotate 6.

As a result, the stopper screw shaft 67 screwed to the nut body 66 is moved to the side away from the stopper receiver 68. At this time, the large stroke operating section 51 exerts a pressure to extend the cylinder. Is maintained, the rocking body 25 is held so that the stopper receiver 68 is kept in contact with the stopper screw shaft 67.
Is forcibly swung upward, whereby the slitter blade 29 moves closer to the rotating body 42 at a low speed (fine adjustment) in accordance with the amount of movement of the stopper screw shaft 67, and the gap S is reduced. It gradually narrows.

When the slitter blade 29 comes into contact with (touches) the rotating body 42 as shown in FIG. 1 due to such approaching movement, the rotation B of the slitter blade 29 is transmitted to the rotating body 42. The rotating body 42 is rotated C around the support shaft 41. At this time, the detected part 44 is also rotated integrally with the rotating body 42, and the rotation of the detected part 44 is detected by the detecting means 45. The detection signal of the detection unit 45 is input to the control unit 46, and under the control of the control unit 46, the drive unit 62 of the fine adjustment operation unit 61 is stopped.

As described above, no back is generated in the back liner 4 and the wear of the slitter blade 29 is reduced.
The fluttering does not occur on the entire cut surface and the commercial value of the cardboard 1 is not reduced.
In the work of bringing the slitter blade 29 into contact with the rotating body 42 by the large stroke operating section 51 with a large stroke and quickly approaching, the fine adjustment operating section 61 continues the approaching movement to finely adjust the position. When the slitter blade 29 is brought into contact with the rotating body 42, the rotation of the rotating body 42 is detected by the detecting means 45, and the fine adjustment operation section 61 is stopped. Can be performed accurately.

The intended cutting of the corrugated cardboard 1 is performed by the slitter blade 29 which is driven and rotated by the corrugated cardboard 1 being conveyed on the conveying path 5 by being supported and guided by the guide plate 11 or the like. This is performed for a predetermined location.

In the above embodiment, the operating means 5
0 has a large stroke operation unit 51 and a fine adjustment operation unit 61, but this may be a type performed by one device using a low-speed cylinder device, a screw shaft feed device, or the like.

In the above-described embodiment, the cylinder type is adopted as the large-stroke operating portion 51. However, this may be a screw shaft feed type, a link type, or the like.
In the above-described embodiment, the screw shaft type is employed as the fine adjustment operation unit 61, but this may be a low-speed cylinder type or a link type.

In the above-described embodiment, a type in which the slitter blade 29 is brought into contact with and separated from the rocking body 25 is adopted. This is a type in which the slitter blade 29 is linearly brought into and out of contact with the slitter blade 29. It may be.

In the above embodiment, the rotary drive shaft 15
Although a type in which a spline cylinder 20 to be spline-fitted is provided is shown, the rotary drive shaft 15 may be a hexagonal shaft type, a keyed shaft type, or the like.

[0036]

According to the first aspect of the present invention, the back liner does not return and the fluff does not occur on the entire cut surface as the slitter blade wears.
The work of contacting the slitter blade to the rotating body according to the change in outer diameter due to the wear of the blade of the slitter blade, that is, the contact rotation type, such as a urethane roll method that does not reduce the commercial value of the cardboard, that is, the alignment In a state where the slitter blade is rotated, the slitter blade is brought close to the rotating body by the actuating means and brought into contact with (touches) the rotating body, and the rotating body is rotated by the rotation of the slitter blade, and this rotation is detected. By detecting by the means and automatically stopping the operation of the operating means, it is possible to perform the operation automatically and quickly and accurately.

According to the second aspect of the present invention,
The operation of bringing the slitter blade into contact with the rotating body, i.e., positioning, is performed by rotating the slitter blade in a state in which the slitter blade is rotated, and the large-stroke operating section performs rapid large-stroke operation so that the slitter blade has a certain clearance with the rotating body. , And approach the slitter blade to the rotating body by continuing the approaching movement by the fine adjustment operation part and making the fine adjustment approach,
The detection means detects that the rotating body has rotated,
By stopping the fine adjustment operation part, it is possible to perform the operation automatically and quickly and accurately.

[Brief description of the drawings]

FIG. 1 shows an embodiment of the present invention, and is a partially cutaway side view of a cardboard cutting facility.

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

FIG. 3 is a partially cutaway plan view of a main part of the corrugated cardboard cutting equipment.

FIG. 4 is a partially cutaway side view of an essential part for explaining an operation state of the corrugated cardboard cutting equipment.

FIG. 5 shows a conventional example, and is a side view of a cardboard cutting equipment using a urethane roll method.

FIG. 6 is a vertical sectional front view of a main part of a corrugated cardboard cutting equipment in a grooved roll system, showing another conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Corrugated cardboard 10 Corrugated cardboard cutting equipment 12 Movable table 15 Rotation drive shaft 19 Mount 20 Spline cylinder 21 Inner cylinder 23 Outer cylinder 25 Oscillator 27 Blade axis 29 Slitter blade 33 Transmission gear 34 Passive gear 35 Endless interlocking device 41 Support axis 42 Rotating body (knife holder) 44 Detected part 45 Detecting means 46 Control part 50 Operating means 51 Large stroke operating part 61 Fine adjustment operating part 62 Drive part (such as motor) with reduction gear 64 Drive gear 65 Passive gear 66 Cylindrical nut body 67 Stopper Screw Shaft 68 Stopper Receiver A Width Direction S Gap B Rotation of Slitter Blade 29 C Rotation of Rotator 42

Claims (2)

[Claims] 1. A corrugated cardboard cutting equipment comprising a slitter blade and a blade receiver opposed to the slitter blade, wherein the blade receiver comprises a freely rotatable rotating body, and the slitter blade is applied to the rotating body. Actuating means is provided to be able to move in and out of contact and to perform contact and separating movement, and this operating means is caused to contact while rotating the slitter blade, and the rotating body side is rotated by the rotational force of the slitter blade. Cardboard cutting equipment characterized in that the cardboard cutting equipment is stopped by detecting this by a detecting means. 2. The operating means has a large stroke operating part and a fine adjustment operating part. After the slitter blade approaches the rotary body by the large stroke operating part, the approach movement is continued by the fine adjustment operating part. 2. The corrugated cardboard cutting equipment according to claim 1, wherein the fine adjustment operation section is stopped by detecting that the slitter blade comes into contact with the rotating body and the rotating body side is rotated by the detecting means.