JP2004291082A - Bending line laser processing system - Google Patents

Abstract

The present invention relates to a laser processing system for a bending line that forms a line for bending a workpiece by laser irradiation, and can easily and reliably form a bending line according to the material of the workpiece. And to improve the degree of freedom.
A laser control processing unit has a table associated with a degree of laser irradiation when laser processing is performed at a predetermined depth in accordance with a material of a workpiece. The processing DB includes at least an input unit. Based on the processing setting data input from 16, the degree of laser irradiation corresponding to the material and processing depth of the workpiece 14 is obtained from the table, and the workpiece is processed by the laser irradiation control system 13. The body 14 is configured to be irradiated with laser.
[Selection] Figure 1

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a bending line laser processing system for forming a line for bending a workpiece by laser irradiation.
[0002]
[Prior art]
Conventionally, for example, various products have been packaged in a three-dimensional package, and in order to make the package into a three-dimensional shape, a streak is formed at a folded portion in a state where the packaging substrate is unfolded. Is called. The formation of the above-described muscle is called muscle pushing, and it is generally performed by forming a concave pressure from both sides with a muscle pushing blade (muscle blade). Such a line pushing process is disclosed in the following patent documents.
[0003]
[Patent Document 1]
JP 2002-18983 A [Patent Document 2]
JP 2001-225400 A [Patent Document 3]
JP-A-2001-219486 [0004]
In the muscle push processing generally performed including the above-mentioned patent documents, the device is relatively simple, and the muscle push processing by intermittent feed that can freely move vertically and horizontally, or the muscle push processing only in the continuous conveyance direction of the workpiece. And can be appropriately selected depending on the processing content.
[0005]
[Problems to be solved by the invention]
However, in the above-described line pushing process, for example, when it is performed on laminated paper, there is a case where the crease may not be formed, and even when the crease is formed, it is often insufficient, so that it corresponds to the material of the workpiece. There is a problem that the blade pressure needs to be adjusted for each material, which is complicated and inefficient. In addition, there is a thickness limitation on the above-described braiding blade and the work piece that can be machined for each device. For example, in the device that mainly targets thin paper with a thickness of 0.08 mm, bracing on laminated paper or cardboard is insufficient. There is a problem that the degree of freedom is low.
[0006]
Accordingly, the present invention has been made in view of the above-described problems, and can easily form a line for bending according to the material of the workpiece, and can perform laser processing of the bending line for improving the degree of freedom. The purpose is to provide a system.
[0007]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the invention of claim 1 is a laser processing system for a folding line that forms a folding line for bending a workpiece at a predetermined depth by laser irradiation. , Having a table associated with the degree of laser irradiation when laser processing is performed at a predetermined depth according to the material of the workpiece, and based on at least the input processing setting data, the material of the workpiece The degree of laser irradiation corresponding to the processing depth is acquired and specified from the table, and the laser control processing means for specifying the processing position for laser processing based on the processing setting data, and the control from the laser control processing means And a laser irradiation control system that performs laser irradiation at a specified processing position of the workpiece with the specified level of laser irradiation based on a drive signal.
[0008]
In the invention of Claims 2 and 3, “the bending line formed on the workpiece is a continuous or intermittent form by a non-penetrating half cut, or an intermittent form by a full cut”. Yes,
“In addition to generating the drive control signal for forming the folding line, the laser control processing means is configured to apply a developed outer peripheral portion when the folding line is folded into an assembly to the workpiece. It is generated including a control drive signal for performing laser processing by continuous full cut at a level of laser irradiation according to the material of the material.
[0009]
In this way, it has a table in which the degree of laser irradiation when performing laser processing at a predetermined depth according to the material of the workpiece is associated, and based on at least the input processing setting data, The degree of laser irradiation corresponding to the material of the body and the processing depth is specified from the table, and the workpiece is irradiated with laser. That is, since the folding line is formed with the degree of laser irradiation according to the material of the workpiece, it becomes possible to easily form the bending line according to the material of the workpiece, There is no need to change the apparatus for each material, and the degree of freedom can be improved.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram of a laser processing system according to the present invention. FIG. 1A is a conceptual block diagram of a laser processing system for bending lines, and FIG. 1B is a block diagram of an internal configuration. In FIG. 1A, a laser processing system 11 includes a laser control processing unit 12 and a laser irradiation control system 13, and the laser irradiation control system 13 includes a nozzle 13A for a laser irradiation portion and bends the workpiece 14. A laser beam is irradiated to a processing position as a position.
[0011]
In other words, the laser processing system 11 having the above-described configuration is configured to form a bending line for bending the workpiece 14 at a predetermined depth by laser irradiation. It is a continuous paper for stacking and a package for packaging various products. It is composed of a foldable base material such as a predetermined type of paper material or plastic material, and is conveyed on a processing stage (not shown). (The conveying means is not shown). And the detection means 15 for positioning on the said process stage is arrange | positioned.
[0012]
Further, the laser control processing means 12 includes an input means 16 and a processing database (DB) 18 as shown in FIG. The display unit 17 and the processing DB 18 can be included in the laser control processing unit 12. The input means 16 is used by the operator to input machining setting data with reference to, for example, the display on the display means 17. The machining setting data includes, for example, the machining position and the material (thickness of the workpiece 14). Data) of the type of processing. The processing DB 18 includes a table in which the material of the workpiece, the processing depth, and the laser irradiation amount (laser frequency with respect to the irradiation amount), which is the degree of laser irradiation, are associated (described in FIG. 4).
[0013]
Examples of the type of processing include a continuous or intermittent form by a non-penetrating half cut, or an intermittent form by a full cut. Further, in addition to the formation of the folding line, the development outer peripheral portion when the folding line is folded to form an assembly is continuously applied with the degree of laser irradiation according to the material of the workpiece 14. There is a form that makes a full cut.
[0014]
The laser irradiation control system 13 performs laser irradiation on the specified processing position of the workpiece 14 with the specified degree of laser irradiation based on the control drive signal from the laser control processing means 12. As shown in (B), a laser generating means 21 and a scan driving means 22 are provided. Although the internal structure of the laser generator 21 will be described with reference to FIG. 2, the laser generator 21 generates laser light whose laser irradiation amount (laser power) can be controlled for half-cut processing. The scan driving unit 22 scans the workpiece 14 with the laser beam for forming a bending line, and includes, for example, a galvano mechanism that has been conventionally known.
[0015]
On the other hand, the laser control processing means 12 acquires and specifies the degree of laser irradiation according to the material and processing depth of the workpiece based on at least the processing setting data that is input, A processing position for laser processing is specified based on the processing setting data. As shown in FIG. 1B, a control means 31, a bus 32, an interface (IF) 33, a processing specification processing means 34, a processing file creation means. 35, a scan drive control means 36 and a laser irradiation drive control means 37 are provided as appropriate.
[0016]
The control means 31 controls the laser processing system 11 in an integrated manner, and stores a program therefor. The IF 33 performs matching of data exchange with the laser irradiation control system 13, the detection unit 15, the input unit 16, the display unit 17, and the processing DB 18. The processing specifying processing means 34 is based on at least the processing position input from the input means 16, the material of the workpiece 14 (including the thickness in the case of a standard shape), and the processing setting data of the type of processing. By acquiring the degree of laser irradiation according to the material of the body 14 and the processing depth from the table of the processing DB 18, a factor for controlling the laser irradiation amount (for example, laser frequency) is specified, and the processing position based on the processing position information And processing for specifying the processing length and the like.
[0017]
The processing file creation means 35 creates a processing file for controlling laser irradiation based on the information for laser processing specified by the processing specification processing means 34. The processing file includes at least a processing position, a length of a bending line, a material of the workpiece 14 and a laser irradiation amount corresponding to the processing depth (for example, a laser power W when the pulse width is constant). Information on the laser frequency).
[0018]
The scan drive control means 36 generates and sends out a control signal for driving the scan drive means 22 of the laser irradiation control system 13 based on the created processing file. For example, each drive control signal for causing the irradiation of the laser beam to the bending line forming surface of the workpiece 14 to scan in the X direction (or the Y direction or both directions) is generated.
[0019]
Then, the laser irradiation drive control means 37 is a laser generation control signal (laser power W) set for each bending line in accordance with the laser processing information based on the generated processing file. In this embodiment, a control signal for adjusting the laser frequency is generated and sent to the laser generating means 21 of the laser irradiation control system 13. The laser processing position may be developed as a bitmap, and a control signal for laser generation at a laser irradiation amount (laser power W) corresponding to the bit may be generated.
[0020]
Here, FIG. 2 shows an explanatory diagram of the laser irradiation control system of FIG. 2A is a block diagram of the laser irradiation control system, and FIG. 2B is an explanatory diagram of laser irradiation amount control. In FIG. 2A, the laser irradiation control system 13 includes a DC power source 41 in addition to the laser generating unit 21 and the scan driving unit 22. The laser generating means 21 includes an RF amplifier 42 and a laser oscillation unit 43.
[0021]
The RF amplifier 42 receives processing data (laser generation data) sent from the laser control processing means 12 and sends a drive signal to the laser oscillation unit 43. The laser oscillation unit 43 sends a drive signal of irradiation time and laser power W (for example, corresponding frequency) based on the laser generation data. That is, the laser generation data is input to the RF amplifier 42, and from the point in time when the drive signal is input from the RF amplifier 42 to the laser oscillation unit 43, the laser oscillation is performed on the workpiece 14 from the laser oscillation unit 43, and the drive is performed. The laser power is determined by the signal frequency. The laser oscillating unit 43 generates a suitably selected laser beam such as a CO ₂ laser or a YAG laser, for example, using an existing laser generation mechanism. The scan drive means 22 receives a scan drive signal as the processing position data out of the processed data, and guides the laser beam to the laser irradiation position in accordance with the scan drive signal.
[0022]
In such a laser irradiation control system 13, as shown in FIG. 2B, generally, the irradiation amount of laser light can be controlled according to each folding line. That is, in FIG. 2B, when the pulse width of the laser irradiation drive pulse is fixed to 5 (μ / sec), the duty ratio (%) with respect to the laser frequency f (KHz) and the laser power ( W) and the laser power (W) can be changed by changing the laser frequency f. The duty ratio in this case is automatically specified by the pulse width with respect to the laser frequency.
[0023]
In addition, as another method for controlling the irradiation amount of the laser beam, even when the duty ratio (%) is fixed, the laser power (W) can be changed by changing the laser frequency f in the same manner. When the laser frequency (KHz) is fixed, the laser power (W) can be changed by changing the duty ratio (%) or the pulse width (s).
[0024]
FIG. 3 is an explanatory diagram for forming a folding line by the laser processing system according to the present invention. 3A is a diagram in the case where a bending line is formed in a state where the workpiece is unfolded, and FIG. 3B is a diagram in a case where the workpiece in which the bending line is formed is folded. FIG. 3C is another view of the folding line to be formed. In FIG. 3A, a continuous folding line 51 is formed by a non-penetrating half cut (in this embodiment, the cut rate is around 50%) at the folding position in the workpiece 14, and FIG. As shown in FIG. 5, the folding line 51 is bent. At this time, since the laser power is set so that the half cut is about 50% in accordance with the material of the workpiece 14, a folding line can be easily and reliably formed according to the material. It can be done. In addition, you may form the half cut of FIG. 3 (A) in an intermittent form.
[0025]
FIG. 3C shows a case where the bending line 52 is formed in a full cut and intermittent form with respect to the workpiece 14. In this case as well, depending on the material of the workpiece 14. By setting the laser power so that the cut rate is around 50%, a folding line can be easily and reliably formed according to the material. Note that FIG. 3B shows a case where the folding line 51 is folded outside, but the same applies when the folding line 51 is folded inside.
[0026]
Here, FIG. 4 shows an explanatory diagram of a table for specifying the laser power for forming the folding line in the laser processing system of the present invention. FIG. 4 (A) shows the relationship between the material of the workpiece and the laser frequency f for processing to the bending depth (including penetration), and FIG. 4 (B) shows the present invention. This is an example of a table T stored in the machining DB 18 (relationship between the material of the workpiece and the laser frequency f to be machined at the machining depth).
[0027]
4A shows, as an example, high-quality paper (continuous amount 55 kg), high-quality paper (continuous amount 135 kg), coated paper (continuous amount 135 kg), PET (polyethylene terephthalate: colorless and transparent), PEN (polyethylene naphthalate: milky white transparent). ), The relationship of the laser frequency f (KHz) when laser processing is performed to the processing depth (each half cut, full cut) with respect to each thickness of polyimide (brown transparent). As shown in FIG. 2B, the laser frequency f in this case is related to the laser power (W) when the driving pulse width is fixed. Here, the “x” of the folding state indicates that it cannot be folded or hard to be folded by manual work, for example.
[0028]
Then, from the results obtained in FIG. 4A, as shown in FIG. 4B, for example, the laser frequency f when half-cutting with a cut rate of about 50% for each material and when full-cutting is performed. Is created as a table T, which is stored in the processing DB 18 and is referred to when performing laser processing. 4 (A) and 4 (B) show examples of the material to be processed. Even if a material not shown here (for example, laminated paper, cardboard, etc.) is used, the degree of processing and the laser frequency f By obtaining the relationship, it can be reflected in the table T.
[0029]
For example, when 50% half-cutting the workpiece 14 with high-quality paper (thickness: 0.196 mm) with a continuous weight of 135 (Kg), a laser frequency of 25 (KHz) is obtained according to the table T. FIG. According to B), processing is performed with a laser power of 40 (W).
[0030]
FIG. 5 shows a process flowchart for specifying the laser power in forming the folding line according to the present invention. In FIG. 5, first, processing setting data such as at least the type of workpiece (material), the type of cut (half cut, penetration), and the processing position are input by the input means 16 (step (S1)).
[0031]
The processing specifying processing unit 34 in the laser control processing unit 13 specifies the entire processing position and processing amount (processing length) of the workpiece pair 14 from the processing position data of the processing setting data, and also determines the processing target 14. Based on the material and the cut type, the corresponding laser frequency f is acquired and specified with reference to the table T (FIG. 4B) stored in the processing DB 18 (S2). Then, the processing file creation means 35 performs processing based on the data of the laser frequency f corresponding to all the processing positions and processing amounts obtained by the processing specification processing means 34 and the processing depths of all the bending lines. A file is created (S3).
[0032]
Based on the created machining file, the scan drive control means 36 generates a drive control signal (machining position data) and sends it as machining data to the scan drive means 22 of the laser irradiation control system 13, and laser irradiation control drive. The means 37 generates a drive control signal (laser generation data) for laser oscillation and sends it as machining data to the laser generation means 21 of the laser irradiation control system 13 (S4). In the laser irradiation control system 13, as shown in FIG. 3 (A) or FIG. 3 (C), the folding lines 51 and 52 are halfway around 50% at the position where the workpiece pair 14 is bent. To cut.
[0033]
In this way, since the folding line is formed with the degree of laser irradiation according to the material of the workpiece 14, the folding lines 51 and 52 can be easily and reliably set according to the material of the workpiece 14. The degree of freedom of laser processing can be improved without the need to change the apparatus for each material of the workpiece 14.
[0034]
Next, FIG. 6 shows an explanatory view of a bending application example of a workpiece on which a bending line according to the present invention is formed. In FIG. 6A, in order to produce a box-shaped package, PET is used as the material of the workpiece 61, and a folding line 51 (half cut) is formed by laser irradiation in a developed state. Is assembled in a box shape and the package 62 is included. In this case, since the workpiece 61 is PET, when referring to the table T in FIG. 4B, the bending line is surely formed by irradiating the laser with the laser frequency f being 15 (KHz). It can be done too.
[0035]
FIG. 6B shows a case where a paper CD jacket is manufactured, using high-quality paper (continuous amount of 135 kg) as the material of the workpiece 71, and corresponding stop pieces 72 and cut lines 73 are appropriately formed. The folding lines 51 are respectively formed at the folding positions in the unfolded state with respect to the three series. In this case, since the workpiece 71 is high-quality paper (continuous amount: 135 kg), when the table T in FIG. 4B is referenced, the laser frequency f is set to 15 (KHz) and the laser irradiation is reliably performed. A folding line can also be formed.
[0036]
In the workpiece 71 in which the bending line 51 is formed as described above, the CD 74 is fixed to the portion where the large cut line 73 of the lower piece is formed, and this is connected to the lower bending lines 51 and 51. The CD 74 is packaged by folding in the middle piece direction, folding the upper piece so as to cover it, and fitting the stopper piece 72 into the small cut line 73.
[0037]
That is, only by changing the laser frequency f between the PET material of the workpiece 61 in FIG. 6A and the high-quality paper (continuous amount 135 kg) of the workpiece 71 in FIG. The folding line 51 corresponding to the material can be easily formed.
[0038]
Next, FIG. 7 shows an explanatory view of another embodiment of forming a folding line in the present invention.
FIGS. 7A and 7B show a case in which the workpiece 14 is manufactured, for example, from the original plate material as the above-described PET, together with the bending line. is there. That is, since the material is PET in order to form the punching line 81 at the development outer peripheral portion and the set predetermined number of bending lines 51 from the workpiece 14, the table T in FIG. When the reference is made, the portion where the punching line 81 is formed is irradiated with the laser beam 13L from the nozzle 13A with a laser frequency f for penetration of 25 (KHz), and the portion where the bending line 51 is formed is half-cut. The laser frequency f is set to 15 (KHz) and the laser beam 13L is irradiated from the nozzle 13A.
[0039]
As a result, the workpiece 61 as shown in FIG. 6A can be manufactured together with the respective folding lines 51 in one step. That is, laser processing can be performed with an appropriate laser power according to the material of the workpiece.
[0040]
【The invention's effect】
As described above, according to the present invention, it has a table associated with the degree of laser irradiation when performing laser processing at a predetermined depth according to the material of the workpiece, and at least input processing setting data Based on the above, the material of the workpiece, the degree of laser irradiation according to the processing depth is specified from the table, and the workpiece is easily irradiated with the laser so that the material of the workpiece can be easily obtained. Accordingly, a bending line can be reliably formed, and the degree of freedom of line formation can be improved.
[Brief description of the drawings]
FIG. 1 is a block diagram of a laser processing system according to the present invention.
FIG. 2 is a block explanatory diagram of the laser irradiation control system of FIG. 1;
FIG. 3 is an explanatory diagram of forming a folding line by the laser processing system according to the present invention.
FIG. 4 is an explanatory diagram of a table for specifying laser power for forming a bending line in the laser processing system of the present invention.
FIG. 5 is a processing flowchart for specifying laser power in forming a folding line according to the present invention.
FIG. 6 is an explanatory diagram of a bending application example of a workpiece on which a bending line is formed according to the present invention.
FIG. 7 is an explanatory view of another embodiment of forming a folding line in the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 11 Laser processing system 12 Laser control processing means 13 Laser irradiation control system 14, 61, 71 Workpiece 15 Detection means 16 Input means 17 Display means 18 Processing database (DB)
21 Laser generation means 22 Scan drive means 34 Processing specific processing means 35 Processing file creation means 36 Scan drive control means 37 Laser irradiation drive control means 51, 52 Bending line

Claims (3)

A bending line laser processing system for forming a bending line for bending a workpiece by laser irradiation at a predetermined depth,
It has a table associated with the degree of laser irradiation when laser processing at a predetermined depth according to the material of the workpiece, and at least based on the processing setting data that is input, Laser control processing means for acquiring and specifying the degree of laser irradiation according to the processing depth from the table and specifying a processing position for laser processing based on the processing setting data;
A laser irradiation control system for performing laser irradiation on a specified processing position of the workpiece with the specified level of laser irradiation based on a control drive signal from the laser control processing means. Laser processing system for bending lines. The bending line laser processing system according to claim 1, wherein the bending line formed on the workpiece is continuous or intermittent by a non-penetrating half cut, or intermittent by a full cut. A laser processing system for a folding line, which is characterized by the following. 3. The laser processing system for a folding line according to claim 1, wherein the laser control processing means generates the driving control signal for forming the folding line, and performs folding on the folding line. A development outer peripheral portion when bent into an assembly is generated including a control drive signal for performing laser processing by continuous full cut at a level of laser irradiation according to the material of the workpiece. A laser processing system for bending lines.

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