JP2000210897A - Long article cutting equipment and cutting method for long article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain long article cutting equipment and a cutting method for the long article without decreasing cutting efficiency and capable of cutting the long article by positively avoiding a cutting avoiding part. SOLUTION: A joint part sensor 42 detects a joint part 24 to send a detecting signal to an arithmetic unit 44. The arithmetic unit 44 starts length measurement with the aid of a length measuring machine 46. Firstly, when a web 22 is cut by a cutter 20, a cutting signal is output to the arithmetic unit 44. The arithmetic unit 44 measures the movement amount R of the web 22 in the course of the above process to calculate the length (L0-R) of the web 22, from the cutting position of the cutter 20 to the joint part 24. The arithmetic unit 44 determines possibility, whether a cutting avoiding part is cut or not at the several time of cutting. Upon predicting the possibility, the arithmetic unit 44 adds or subtracts a given value relative to established cutting length C and outputs new cutting length to a cutter control 40 to cut the web 22 after avoiding the cut avoiding part.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a long object cutting apparatus and a long object cutting method for cutting a long object in a direction intersecting with the longitudinal direction, and more particularly, to a specific portion of a long object (cutting avoiding portion). The present invention relates to a long object cutting apparatus and a long object cutting method for cutting while avoiding the problem.

[0002]

2. Description of the Related Art In general, in a long object cutting apparatus for sequentially cutting a long object in a direction intersecting the longitudinal direction, the long object is cut by a cutting means such as a cutter while being conveyed in the longitudinal direction. . By the way, for example, when a long object is formed by joining a plurality of components in a certain direction, physical properties are changed at a joining portion or an adhesive is attached, so the joining portion is It is desired to avoid and cut.

As an example, in a manufacturing process of a photosensitive printing plate, a long sheet material (web) is formed by joining a plurality of aluminum plates in a predetermined direction with an adhesive tape. The sheet is cut at a predetermined position by a cutter while being conveyed in the longitudinal direction to obtain a photosensitive printing plate having a desired size. In this case, when the part where the adhesive tape is stuck (near the joint) is cut with a cutter,
Since the glue of the adhesive tape adheres to the cutter, it is desired to avoid this portion and cut.

For this reason, in the conventional long object cutting apparatus, when it is determined that the joining portion is cut, the transport of the long object is temporarily stopped before the joining portion reaches the cutting means, and the joining portion is cut off. Has been passed downstream of the cutting means in the direction of conveyance and the conveyance has been resumed, and the cutting has been performed again. However, once the conveyance of the long object is stopped, the efficiency of cutting is reduced.

[0005] Further, not only a long object formed by joining a plurality of components in a fixed direction but also a specific portion of the long object is a portion where it is desired to avoid cutting (cutting avoiding portion). In this case, similarly to the above, it is necessary to temporarily stop the conveyance of the long object and to pass the cutting avoidance portion downstream of the cutting means in the conveyance direction, and the cutting efficiency is reduced.

[0006]

SUMMARY OF THE INVENTION In consideration of the above fact, the present invention provides a long object cutting apparatus and a long object cutting device capable of reliably cutting by avoiding a cutting avoidance portion without lowering cutting efficiency. The task is to obtain a method.

[0007]

The present invention according to claim 1 is a long object cutting apparatus for cutting a long object in a direction intersecting the longitudinal direction, wherein the long object is conveyed in the longitudinal direction. Conveying means, detecting means for detecting a specific index of the long object conveyed by the conveying means, and a direction intersecting the longitudinal direction with the long object on the downstream side in the conveying direction of the long object than the detecting means Cutting means for cutting the specific index detected by the detecting means, and whether or not the cutting avoidance portion in the vicinity thereof is cut by the cutting means. And a control means for controlling the cutting means so as to cut while avoiding the avoiding portion.

When the specific index is not detected by the detecting means, the long object is conveyed in the longitudinal direction by the conveying means, and the cutting means cuts the long object in a direction intersecting the longitudinal direction.

When the detection means detects the specific index, the control means, when cutting the long object without lowering the transport speed or stopping the transport, stops the specific index and a cutting avoidance portion near the specific index. It is determined whether or not is disconnected. Then, when it is determined that the cutting avoidance portion is cut, the cutting means is controlled so as to cut while avoiding the cutting avoidance portion.

[0010] As described above, the control means controls the cutting means, so that the cutting can be surely avoided while avoiding the cutting avoidance portion.
Further, since the conveying speed of the long object by the conveying means is not reduced or the conveying is not temporarily stopped, the cutting efficiency does not decrease.

According to a second aspect of the present invention, in the first aspect of the present invention, the control means changes the timing at which the cutting means cuts the long object to avoid cutting the cutting avoiding portion. It is characterized by doing.

When the specific index is not detected by the detecting means, the cutting means cuts the long object at a predetermined timing.

When the specific index is detected by the detecting means, the control means changes the timing of the cutting by the cutting means and controls the cutting means so as to cut by avoiding the cut avoidance portion.

As described above, since the timing of the cutting by the cutting means is controlled to avoid the cutting avoidance portion, there is no need to change the position of the cutting means and perform the cutting. For this reason, the long object cutting device does not become large and the structure does not become complicated.

According to a third aspect of the present invention, in the first aspect of the present invention, the control means avoids cutting of the cutting avoidance portion by changing a relative position of the cutting means with respect to the transport means. It is characterized by the following.

When the specific index is not detected by the detecting means, the cutting means cuts the long object at a predetermined position.

When the specific index is detected by the detecting means, the control means moves the relative position of the cutting means with respect to the transport means, and controls the cutting means so as to cut by avoiding the cutting avoidance portion.

As described above, since the position of the cutting means is controlled to avoid the cutting avoidance portion, it is not necessary to change the timing of cutting by the cutting means and perform cutting. For this reason, control for cutting while avoiding the cutting avoidance portion is simplified.

According to a fourth aspect of the present invention, there is provided a long object cutting method for cutting a long object in a direction intersecting the longitudinal direction, wherein the conveying step of conveying the long object in the longitudinal direction; A detecting step of detecting a specific index of the long object during the transfer of the long object by the step; A cutting step of cutting in a direction intersecting with the longitudinal direction on the side, and determining whether or not the specific index detected by the detection step and a cutting avoidance portion in the vicinity thereof are cut by the cutting step, and cut. And a control step of controlling the cutting step so that the cutting is avoided while avoiding the cutting avoiding portion.

When the specific index is not detected in the detecting step, the long object is conveyed in the longitudinal direction by the conveying step, and the long object being conveyed is cut in the direction intersecting the longitudinal direction by the cutting step. .

When the specific index is detected in the detection step, the control step cuts the long object without lowering the transport speed or stopping the transport. It is determined whether or not is disconnected. When it is determined that the cut avoidance portion is cut, the cutting process is controlled so as to avoid the cut avoidance portion.

As described above, by controlling the cutting step in the control step, the cutting avoiding portion can be reliably formed without reducing the conveying speed of the long object in the conveying step or temporarily stopping the conveying. Cutting can be avoided and cutting efficiency does not decrease.

[0023]

1 and 2 show a photosensitive printing plate cutting apparatus 10 according to an embodiment of the present invention. FIG. 3 schematically shows a photosensitive printing plate 30 manufacturing line 12 in which the photosensitive printing plate cutting device 10 is incorporated.

As shown in FIG. 3, the production line 12 includes:
From the upstream side (upper right side in FIG. 3) to the downstream side (lower left side in FIG. 3), in order from the transmitter 14, the notcher 16, the slitter 1
8 and a cutter 20 are provided.

The feeder 14 feeds out a rolled web 22. Then, as shown in FIG. 4, a predetermined bonding portion 24 (gap) is provided between the plurality of webs 22, and the webs 22 are sequentially bonded by a light-transmitting adhesive tape 26 to form a long shape.
This adhesive tape 26, the web 22F in the transport direction downstream side of the joining portion 24, the downstream-side joint portion 28F of the joint length L _F is constructed. Similarly, the web 22B of the upstream side than the joint portion 24, the upstream-side joint portion 28B is constituted of the joint length L _B. In this way, the portion joined by the adhesive tape 26 is desirably not cut because the glue of the adhesive tape 26 adheres to the cutter 20 when the cutter 20 cuts the adhesive. That is, the portion joined by the adhesive tape 26 is a cut avoiding portion 28 where cutting by the cutter 20 is avoided, as will be described in detail later.

At a predetermined position on the production line 12, the sending machine 1
A roller 54 is provided for nipping the web 22 that has been sent from the web 4 and sequentially joined by the adhesive tape 26 and transports the web 22 at a constant transport speed. The web 22 nipped and transported by the rollers 54 reaches the notcher 16.

As shown in FIG. 3, the notcher 16 forms a so-called ear 52 by partially punching out both ends in the width direction of the web 22. Further, the web 22 is moved by the trimming upper blade 32 and the trimming lower blade 34 of the slitter 18.
Is trimmed to a predetermined width. Further, since the upper trimming blade 32 and the lower trimming blade 34 of the slitter 18 enter the ear portion 52, the web 22 can be moved in the width direction.
Thus, the trimming width of the web 22 (width cut by the slitter 18) can be changed while continuously cutting.

Thus, the web 22 having a predetermined trimming width is cut into a predetermined length by the cutter 20, and a photosensitive printing plate 30 having a desired size is manufactured.

As shown in FIG. 1 and FIG.
Has a lower blade 36 fixed below the web 22, and an upper blade 38 disposed above the web 22 and capable of moving toward and away from the lower blade 36. Upper blade 38 and lower blade 36
Are formed to be longer than the width of the web 22, and are arranged so as to be orthogonal to the web 22. When the upper blade 38 is lowered, the web 22 is sandwiched between the upper blade 38 and the lower blade 36 and cut in a direction orthogonal to the longitudinal direction.

The cutter 20 includes a cutter controller 40.
Is connected. The cutter control device 40 is connected to a calculation device 44 to be described later, and drives the cutter 20 at a predetermined timing based on a cut length signal indicating the cut length output from the calculation device 44.

On the upstream side of the notcher 16 in the transport direction, at a position separated from the cutter 20 by a fixed length L ₀ ,
The joint sensor 42 is fixed and connected to the arithmetic unit 44. The joint sensor 42 irradiates the web 22 with light, and the light passes through the joint 24 so that
It detects that the joint 24 has passed. Then, the detection signal is output to the arithmetic unit 44.

The joint sensor 42 and the notcher 16
Between them, a length measuring device 46 is provided. The length measuring device 46 includes a pulse generator (PG) 48 facing the web 22 from below, and a counter 50 connected to the pulse generator 48. Further, the counter 50 is connected to the arithmetic unit 44. The counter 50 counts the transport length of the web 22 measured by the pulse generator 48, and outputs the counted transport length to the arithmetic unit 44.

An operation panel (not shown) is connected to the arithmetic unit 44. The operator can input a predetermined length (set cut length C) for cutting the web 22 via the operation panel.

The cutter 20 and the joint sensor 4 described above
2, the arithmetic unit 44 and the length measuring unit 46 constitute the photosensitive printing plate cutting means 10 of the present embodiment.

Next, the photosensitive printing plate cutting means 10 of the present embodiment avoids the cutting avoiding portion 28 and cuts the web 2.
A method for cutting 2 (long object) will be described.

When the joint sensor 42 does not detect the joint 24, the arithmetic unit 44 outputs the predetermined cut length C input by the operator (or automatically input) to the cutter control unit 40. To do so, the cutter control device 40 controls the cutter 20 so that the web 22 is cut at the set cut length C.

When the joint 24 is detected by the joint sensor 42, the detection signal is sent to the arithmetic unit 44, and the arithmetic unit 44 starts the length measurement by the length measuring unit 46. Thereafter, as shown in FIG. 2, when the web 22 is first cut by the cutter 20, a cutting signal is sent to the arithmetic unit 44. The arithmetic unit 44 measures the moving amount R of the web 22 conveyed until the cutter 20 first cuts after the joint 24 is detected by the joint sensor 42. Thereby, the length (remaining length) of the web 22 from the cutting position by the cutter 20 to the joining portion 24 is set to (L ₀
−R).

Next, the arithmetic unit 44 determines whether or not there is a risk that the cutting avoiding portion 28 may be cut by several times of cutting. Specifically, for example, (n-1)
When the sheet of photosensitive printing plate 30 is cut, (n-1)
When the remainder of the residual length R _X occurs between the sheet cutting position to the junction _{24, (L 0 -R) =} C (n-1) + R X (1) is satisfied. That is, in the quotient obtained by dividing the remaining length (L ₀ -R) Setting cut length C (n-1), the remainder is R _X.

[0039] Thus, in the case of R _X <L _F, that is, when the remaining length R _X is shorter than the junction length L _F of the downstream junction 28F (see FIG. 4) is cutting the downstream junction 28F Therefore, the arithmetic unit 44 instructs the cutter control unit 40 to set a predetermined value with respect to the preset cut length C so that the cutting can be performed while avoiding the downstream joint portion 28F. Adds or subtracts and outputs the new cut length (changed cut length).

[0040] In contrast, in the case of R _X> L _F, i.e., your residual length R _X is longer than the junction length L _F of the downstream junction. 28F, thereby cutting the downstream junction 28F Since there is no such, the (n-1) th photosensitive printing plate 30 is cut without changing the cut length C. However, the next photosensitive printing plate 30, that is, relates to a photosensitive printing plate 30 of the n-th, when the _{(C-R X) <L} B,
That is, when the length from the junction 24 to the cutting position of the n th of the photosensitive printing plates 30 (C-R _X) is shorter than the junction length L _B of the upstream joining portion 28B (see FIG. 4) Is
Since it is predicted that the upstream joint portion 28B will be cut, the arithmetic unit 44 instructs the cutter control device 40 to cut the upstream joint portion 28B so as to avoid the upstream joint portion 28B.
A predetermined value is added to or subtracted from a preset cut length C, and a new cut length (changed cut length) is output.

In the cutter controller 40, an arithmetic unit 44
The drive timing of the cutter 20 is controlled in accordance with the changed cut length after the change output from. As a result, the cutting is avoided while avoiding the cutting avoiding portion 28, and the cutter 2
Since the adhesive of the adhesive tape 26 does not adhere to the
The cutting ability of 0 is not reduced. Also, cutter 2
Since no adhesive adheres to the photosensitive printing plate 30 from 0, the handling of the photosensitive printing plate 30 is facilitated, so that the next process is not affected, and the photosensitive printing plate 30 is not affected.
The quality is stable.

Further, since it is not necessary to lower the transport speed of the web 22 or to temporarily stop the transport, the cutting ability is not reduced.

In the above description, the length measuring device 46 for measuring the moving amount R of the web 22 has a pulse generator 48 as an example. However, the length measuring device is not limited to this. For example, when the transport speed of the web 22 is constant, the transport time may be measured by a timer to calculate the movement amount R.

Further, the timing of cutting by the cutter 20 is controlled to change the cut length of the web 22, but the configuration for changing the cut length is not limited to this. For example, the cutter 20 is movably attached to the roller 54 on the upstream and downstream sides in the transport direction,
By changing the relative position of the cutter 20 with respect to the roller 54, the cut length may be changed.
By moving the cutter 20 in this manner, there is no need to change the cutting timing, and the control is simplified. On the other hand, as described above, when the drive timing of the cutter 20 is changed, since the cutter 20 can be fixed, the photosensitive printing plate cutting device 10 does not become large,
The structure is also simplified.

A photosensitive printing plate cutting device 10 is given as an example of a long object cutting device. As an example of a long object cut by the long object cutting device, a web before being cut into a photosensitive printing plate 30 is used. Although 22 has been mentioned, it is a matter of course that the type of the long object cutting device and the long object is not limited thereto. The long object cutting device of the present invention can be used not only when a long object is bonded by an adhesive tape but also when it is desired to cut a part avoiding a specific cutting avoidance portion. For example, when a metal sheet is partially overlapped and joined, this joined portion has high rigidity,
Since it is difficult to cut, it is preferable to avoid cutting also from the viewpoint of protecting the cutter 20. Even in such a case,
By using the long object cutting device of the present invention, it is possible to cut while avoiding the joint portion. In this case, the joint may be marked as a specific index,
Utilizing the fact that the thickness of the joining portion is large, a portion where the thickness is changing may be used as the specific index. The direction in which a long object is cut by the cutter 20 is not limited to a direction orthogonal to the longitudinal direction, and may intersect so as to be inclined at a predetermined angle.

Further, by detecting the specific index (the joint 24 in the above description) of the long object, it is possible to determine the number of the cut member (photosensitive printing plate 30) including the specific index. Therefore, it is possible to discriminate the member from the cut member that does not include the specific index, or notify the worker that a member having a cutting angle that includes the specific index has occurred.

[0047]

Next, the present invention will be described in more detail with reference to examples. However, it goes without saying that the present invention is not limited to the following examples.

In this embodiment, the web 22 was cut by using the above-described photosensitive printing plate cutting apparatus 10 to obtain a photosensitive printing plate 30 having a desired size. In addition, the operator operates the arithmetic unit 4
Setting cut length C to be input to the 4, a fixed length L ₀ from the cutter 20 to the junction sensor 42, the junction length L _F of the downstream junction portion 28F, the bonding length of the upstream-side joint portion 28B L _B, respectively, 370 ≦ C ≦ 1200 (mm) L ₀ = 5100 (mm) L _F = 80 (mm) L _B = 80 (mm)

Further, in this embodiment, the arithmetic unit 44
(N-1) th or nth cut position predicted
According to the (predicted cut point) and the distance X between the joint 24,
In the four cases shown in FIG. 5 (case 1 to case 4)
Divided. Note that this distance X is R_X<L_Fin the case of
(Case 1 and Case 2)_XAnd (C-R
_X) <L_BIn case (Case 3 and Case 4), (C-
R_X).

Further, in each case, when the value of the set cut length C is less than 400 (mm), 400
(Mm) or more and less than 500 (mm) and 500
(Mm) or more, the cut length is changed. Hereinafter, each of these four cases will be described. In addition,
In FIG. 5, in each case, the range in which the joint 24 is located based on the predicted cut point is indicated by an arrow.

[0051] <Case 1> Case 1, when the predicted cut point will be included downstream junction portion 28F, i.e. in the case of R _X <L _F, and, from the predicted cut point to the junction 24 This is the case where the distance X is in the range of 50 ≦ X <80.

As can be seen from the table of FIG.
If m) <C, the arithmetic unit 44 adds 160 (mm) to the set cut length C to obtain a new cut length. Thereby, the cutter control device 40 delays the timing of cutting by the cutter 20 so that the cutting position moves to the upstream side, and moves the position beyond the downstream-side joining portion 28F and the upstream-side joining portion 28B (the position indicated by “▲”). ) In web 22
Disconnect.

On the other hand, 400 (mm) ≦ C <500
(Mm) and 500 (mm) ≦ C,
The arithmetic unit 44 subtracts 30 (mm) from the set cut length C to obtain a new cut length. Thereby, the cutter control device 40 advances the timing of the cutting by the cutter 20 so that the cutting position moves to the downstream side, and the web is set at a position further downstream than the downstream joining portion 28F (a position indicated by “△”). Cut 22.

[0054] In <Case 2> Case 2, if the predicted cut point will be included downstream junction portion 28F, i.e. in the case of R _X <L _F, and, from the predicted cut point to the junction 24 This is the case where the distance X is in the range of 0 ≦ X <50.

From the table of FIG. 5, when 400 (mm) <C and when 400 (mm) ≦ C <500 (mm),
The arithmetic unit 44 sets the set cut length C to 130 (mm).
To make a new cut length. Thereby, the cutter control device 40 delays the timing of cutting by the cutter 20 so that the cutting position moves to the upstream side, and moves the position beyond the downstream-side joining portion 28F and the upstream-side joining portion 28B (the position indicated by “▲”). ), The web 22 is cut.

On the other hand, if 500 (mm) ≦ C, the arithmetic unit 44 sets the cut length C to 80 (mm).
To a new cut length. Thereby, the cutter control device 40 advances the timing of cutting by the cutter 20 so that the cutting position moves to the downstream side, and the position downstream of the downstream joining portion 28F (the position indicated by “で”).
To cut the web 22.

[0057] In <Case 3> Case 3, when the predicted cut point will be included in the upstream joining portion 28B, i.e. a (C-R _X) <For L _B, and, joining the predicted cut point This is a case where the distance X to the unit 24 is in the range of −50 <X <0.

From the table of FIG. 5, when 400 (mm) <C and when 400 (mm) ≦ C <500 (mm),
The arithmetic unit 44 adds 80 (mm) to the set cut length C to obtain a new cut length. Thereby, the cutter control device 40 delays the timing of cutting by the cutter 20 so that the cutting position moves to the upstream side, and moves the position beyond the downstream-side joining portion 28F and the upstream-side joining portion 28B (the position indicated by “▲”). ), The web 22 is cut.

On the other hand, if 500 (mm) ≦ C, the arithmetic unit 44 sets the cut length C to 130 (m).
m) is subtracted to obtain a new cut length. Thereby, the cutter control device 40 advances the timing of the cutting by the cutter 20 so that the cutting position moves to the downstream side, and the web 22 at the position upstream of the upstream joining portion 28B (the position indicated by “△”). Disconnect.

[0060] In <Case 4> case 4, if the predicted cut point will be included in the upstream joining portion 28B, i.e. a (C-R _X) <For L _B, and, joining the predicted cut point The distance X to the part 24 is -80 <X ≦ −5
This is the case when the range is 0.

From the table of FIG. 5, it is found that 400 (mm) <C, 40
0 (mm) ≦ C <500 (mm) and 500 (mm) ≦
In all cases C, the arithmetic unit 44 sets the set cut length C
Is added to 30 mm to make a new cut length. Thereby, the cutter control device 40 delays the cutting timing by the cutter 20 so that the cutting position moves to the upstream side, and the downstream side joining portion 28F and the upstream side joining portion 28F.
The web 22 is cut at a position beyond B (the position indicated by “▲”).

In any case, once the web 22 is cut with the changed cut length, the cut length is returned to the set cut length C from the next cut, and the web 22 is cut continuously.

As described above, in this embodiment, in any case, the cut length is changed according to the value of the set cut length C, and the cut length is changed at the position indicated by “△” or the position indicated by “「 ”. The web 22 is cut. Here, L _B = 8
Considering that 0 (mm), the adhesive tape 26 is not attached at the changed cut point indicated by “▲”, and similarly, considering that L _F = 80 (mm), The adhesive tape 26 is not attached even at the changed cut point indicated by “△”. In other words, any cutting point can be cut while avoiding the cutting avoidance area without fail, and the adhesive of the adhesive tape 26 does not adhere to the cutter 20.

When cutting is performed at the position indicated by “△”, the cutting avoiding portion 28 is located upstream of the cut point.
However, in this embodiment, since the lower limit value of the set cut length C is 370 (mm), the cut avoiding portion 28 is not cut. That is, for example, in the case of Case 3, when the cut length is changed by subtracting 130 (mm) from the set cut length C, considering that L _B = 80 (mm), 210 (mm) (ie, , 130
(Mm) +80 (mm)) The upstream end of the upstream joining portion 28B is located at the upstream position. However, even in this case, since the next cutting is performed 370 (mm) upstream from the changed cutting position, the cutting avoiding portion 28 is not cut.

[0065]

According to the first aspect of the present invention, there is provided a long object cutting apparatus for cutting a long object in a direction intersecting the longitudinal direction, and a conveying means for conveying the long object in the longitudinal direction; Detecting means for detecting a specific index of the long object conveyed by the conveying means, and cutting for cutting the long object in a direction intersecting the longitudinal direction on the downstream side in the conveying direction of the long object from the detecting means; Means, and whether or not the specific index detected by the detection means and a cutting avoidance part in the vicinity thereof are cut by the cutting means, and if it is determined that the cutting is to be avoided, the cutting avoidance part is avoided. And control means for controlling the cutting means so that the cutting is performed. Thus, the cutting can be reliably avoided by avoiding the cutting avoidance portion, and the cutting efficiency does not decrease.

According to a second aspect of the present invention, in the first aspect of the present invention, the control means changes the timing at which the cutting means cuts the long object to avoid cutting the cutting avoidance portion. Therefore, the long object cutting device does not become large and the structure is not complicated.

According to a third aspect of the present invention, in the first aspect of the present invention, the control means avoids cutting the cutting avoidance portion by changing a relative position of the cutting means with respect to the transport means. Therefore, control for cutting while avoiding the cutting avoidance portion is simplified.

According to a fourth aspect of the present invention, there is provided a long object cutting method for cutting a long object in a direction intersecting the longitudinal direction, wherein the conveying step of conveying the long object in the longitudinal direction; A detecting step of detecting a specific index of the long object during the transfer of the long object by the step; A cutting step of cutting in a direction intersecting with the longitudinal direction on the side, and determining whether or not the specific index detected by the detection step and a cutting avoidance portion in the vicinity thereof are cut by the cutting step, and cut. And a control step of controlling the cutting step so as to cut by avoiding the cut avoiding portion, so that the cutting can be avoided by reliably avoiding the cut avoiding portion, and the cutting efficiency is reduced. Nor.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram illustrating a schematic configuration of a photosensitive printing plate cutting device according to an embodiment of the present invention.

FIG. 2 is an explanatory diagram showing a state in which the photosensitive printing plate cutting device according to one embodiment of the present invention cuts a web.

FIG. 3 is a perspective view showing a photosensitive printing plate production line in which the photosensitive printing plate cutting device according to one embodiment of the present invention is incorporated.

FIG. 4 is a perspective view showing the vicinity of a joining portion of a web cut by the photosensitive printing plate cutting device according to one embodiment of the present invention.

FIG. 5 is an explanatory diagram illustrating a change in cut length by the photosensitive printing plate cutting device according to one embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Photosensitive printing plate cutting device 20 Cutter (cutting means) 22 Web (long object) 24 Joining part (specific index) 28 Cutting avoidance part 30 Photosensitive printing plate 40 Cutter control unit (control means) 42 Joint part sensor (detection) Means) 44 arithmetic unit (control means) 54 roller (transport means)

Claims (4)

[Claims] 1. A long object cutting device for cutting a long object in a direction intersecting a longitudinal direction, comprising: conveying means for conveying the long object in a longitudinal direction; and the length conveyed by the conveying means. Detecting means for detecting a specific index of a long object; cutting means for cutting the long object in a direction intersecting with the longitudinal direction on the downstream side in the transport direction of the long object from the detecting means; It is determined whether or not the specific index and the cutting avoidance part in the vicinity thereof are cut by the cutting means, and if it is determined that the cutting is to be performed, the cutting means is configured to cut around the cutting avoidance part. A long object cutting device comprising: control means for controlling. 2. The cutting of a long object according to claim 1, wherein the control unit changes a timing at which the cutting unit cuts the long object to avoid cutting the cutting avoidance portion. apparatus. 3. The long object cutting apparatus according to claim 1, wherein the control unit changes the relative position of the cutting unit with respect to the transport unit to avoid cutting the cutting avoidance part. . 4. A long object cutting method for cutting a long object in a direction intersecting a longitudinal direction, comprising: a conveying step of conveying the long object in a longitudinal direction; and a conveying of the long object by the conveying step. A detection step of detecting a specific index of the long object during the conveyance, and the conveyance of the long object in the conveyance step intersects the longitudinal direction on the downstream side in the conveyance direction from the detection position in the detection step. A cutting step for cutting in the direction, and determining whether or not the specific index detected by the detection step and the cutting avoidance portion in the vicinity thereof are cut by the cutting step. And a control step of controlling the cutting step so as to cut while avoiding the cutting avoidance portion.