JP6932315B2 - Sheet material cutting device and cutting method - Google Patents

Description

The present invention relates to a sheet material cutting device and a cutting method for cutting a cutting part printed on a sheet material.

Conventionally, a cutting device for cutting various laminated sheet materials into a pre-designed shape has been known (for example, Patent Document 1). The cutting device includes a cutting head that freely moves in the horizontal direction, and a cutting blade that can rotate in the θ direction on the cutting head, and by driving the cutting head and the cutting blade, a shape designed in advance. The sheet material is cut into pieces (for example, Patent Document 1).

Further, there is known a cutting device that scans an image printed on paper with a scanner, extracts a contour from the image, generates cut line data based on the contour, and cuts according to the contour according to the cut line data. (For example, Patent Document 2).

Further, as in Patent Document 2, the cutting pattern printed on the cloth is photographed by the image capturing unit, the contour is extracted, and the sheet material is cut according to the cutting data calculated from the contour. (For example, Patent Document 3).

Japanese Unexamined Patent Publication No. 2015-6703 Japanese Unexamined Patent Publication No. 2000-218881 Japanese Unexamined Patent Publication No. 2016-61000

Recently, in the formation of sports uniforms, the above contours and various characters and color patterns printed with sublimation ink have appeared on the sheet material, and there is a request to cut along the contours. It is increasing.

Therefore, like the device of Patent Document 3, a uniform part printed on a sheet material is read, an outline of the part is extracted as a contour, and cutting is performed along the contour. Then, each of the cut parts is sewn to form a uniform.

When sewing the cut parts, a notch serving as a mark is formed in order to specify the sewing position of the cut parts. The notch is formed, for example, as a Λ notch that protrudes outside the contour, or a V-notch or I-notch that cuts inside the contour. Then, sewing is performed by aligning and superimposing these notches as marks.

By the way, for example, when the cutting part of the uniform to be cut is plain and only the outer line is formed, and the outer line of the cutting part is cut as the contour, there is no problem even with the device as in Patent Document 3. However, recently, as various clothing materials, sheet materials on which a pattern is formed and sheet materials on which characters and patterns are formed, such as the above-mentioned uniform material, have become widely available.

Therefore, when the contour is extracted from the sheet material on which the pattern or the character is formed by using the device as in Patent Document 3, the outer shape of the pattern or the character in the cut part is also extracted as the contour, and these contours are also extracted. There was a problem of cutting by mistake.

Further, for example, it is conceivable to mask the inside of the cut parts as non-cut data so as not to cut these patterns and characters. However, when the inside of the cut parts is masked as non-cut data in this way, the above V When forming a notch or an I notch, or forming a notch inside the sheet material, there is a problem that these cannot be cut.

Therefore, the present invention accurately cuts along the contour of the cut part, and misrecognizes even if the cut part contains a non-cut part that should not be cut and a cut part that needs to be cut. It is an object of the present invention to provide a cutting device and a cutting method capable of cutting a sheet material without cutting.

The invention of claim 1 is a cutting table on which a sheet material on which cutting parts are formed is placed.
With a cutting head that can move the upper surface of the cutting table horizontally,
A photographing means for acquiring image data of the cutting parts by photographing the sheet material placed on the cutting table, and
A cutting device including a control unit that extracts the contour of the cutting part from the image data, creates cutting data from the contour, outputs the cutting data to the cutting head, and controls the cutting head based on the cutting data. In
The sheet material is formed with at least one instruction mark indicating a predetermined position of the contour around the outer periphery of the contour of the cutting part.
The photographing means is configured to detect the instruction mark.
The control unit controls the cutting head based on the cutting data along the contour and a control pattern in which a predetermined position of the contour designated by the instruction mark is assigned to the instruction mark in advance, thereby controlling the sheet. It is a cutting device that cuts the material.

The invention of claim 2 is the cutting device according to claim 1, wherein the instruction mark includes a first circular mark and a second circular mark, and is a center point of each of the first circular mark and the second circular mark. It is a cutting device configured to indicate the intersection of the extension line connecting the two and the contour.

According to the invention of claim 3, in the cutting device according to claim 1 or 2, the instruction mark is formed with a symbol to which a control pattern to be cut is assigned in advance, and the control unit uses the symbol. It is a cutting device that cuts the sheet material according to the control pattern when it is recognized.

The invention of claim 4 protects the inside of the contour of the image data as a non-cutting portion in the cutting device according to any one of claims 1 to 3, and at the position indicated by the instruction mark, the contour. It is a cutting device that allows cutting inside the.

In the invention of claim 5, the sheet material on which the cutting parts are formed is placed on the cutting table.
The sheet material is photographed to acquire the image data of the cut parts, and the image data is acquired.
The contour of the cut part is extracted from the image data, and the cut data is created from the contour.
In the cutting method for cutting the sheet material based on the cutting data,
At least one instruction mark indicating a predetermined position of the contour is formed on the sheet material around the outer side of the contour of the cutting part.
When acquiring the image data of the cut part, the image data of the contour and the instruction mark is acquired, and the image data is acquired.
The sheet material is cut along the contour, and the instruction mark is a cutting method in which the sheet material is cut at a predetermined position of the contour indicated by the instruction mark by a control pattern assigned to the instruction mark. ..

The invention of claim 6 is the cutting method according to claim 5, wherein the instruction mark includes a first circular mark and a second circular mark, and is a center point of each of the first circular mark and the second circular mark. It is a cutting method configured to indicate the intersection of the extension line connecting the two and the contour.

The invention of claim 7 is the cutting method according to claim 5 or 6, wherein the instruction mark is formed with a symbol to which a control pattern to be cut is assigned in advance, and the control unit recognizes the symbol. This is a cutting method for cutting the sheet material according to the control pattern.

The invention of claim 8 protects the inside of the contour of the image data as a non-cut portion in the cutting method according to any one of claims 5 to 7, and at the position indicated by the instruction mark, the contour. It is a cutting method that allows cutting inside the.

According to the invention of claim 1 or 5, even when cutting a shape that is difficult to recognize as the outline of the cut part, by recognizing the instruction mark, the position indicated by the instruction mark can be made into a predetermined shape. Can be cut. In addition, since the cutting pattern is assigned to the instruction mark in advance, it is not necessary to form the contour of the cutting part into a contour that matches the cutting pattern, the formation of the cutting part can be simplified, and the cutting pattern is difficult to form as a contour. Even if there is, it can be easily cut.

According to the second or sixth aspect of the present invention, the instruction mark is easily recognized and is not erroneously recognized, so that the predetermined position of the contour can be accurately specified. Further, since the designated position of the contour can be designated with reference to the center of the two circular marks of the first circular mark and the second circular mark, the accuracy of the designated position can be improved and the cutting accuracy can be improved.

According to the invention of claim 3 or 7, since the symbol assigned to the cutting pattern is formed in advance for each instruction mark, it is possible to correspond to various cutting patterns and the shape of the instruction mark is determined. Therefore, the recognition pattern can be unified and the control can be simplified.

According to the invention of claim 4 or 8, the inside of the cutting part is protected as a non-cutting portion, and the inside of the cutting part is allowed to be cut only at a predetermined position indicated by the instruction mark. , The pattern or character inside the cutting part is not mistakenly recognized as an outline, and the pattern or character is not accidentally cut.

Is a plan view of the cutting device of the present invention. Is a front view of the cutting device of the present invention. Is a partially omitted plan view of the cutting device of the present invention showing a state in which a sheet material is placed. Is an explanatory diagram showing an embodiment of a cutting part to be cut by the cutting device of the present invention. Is an enlarged explanatory view according to an embodiment of the instruction mark formed on the cut part.

Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 5, but the present invention is not limited to the embodiments described in the drawings.

FIG. 1 is a plan view of the cutting device 1 according to the embodiment of the present invention, and FIG. 2 is a front view of the cutting device 1. As shown in FIGS. 1 and 2, the cutting device 1 has a main body frame 2 formed in a rectangular box shape, a cutting table 3 horizontally provided on the main body frame 2, and a cutting table 3 on the main body frame 2. A support beam 5 suspended in the Y direction (short side direction), a cutting head 6 provided on the support beam 5, a camera 17 as an imaging means provided on the cutting table 3, and the cutting device. It is composed of a control unit 12 and the like that control 1.

The cutting table 3 is formed by laying a large number of bristles blocks made of resin or the like, and is sucked onto the surface of the bristles blocks by an appropriate suction source (not shown) provided in the main body frame 2. Power is working. Further, the cutting table 3 is formed endlessly in the X direction (longitudinal direction) and can be rotated by a driving means (not shown), and sucks and holds the sheet material S carried in from the carry-in side (right side in the drawing). Then, it is transported to the carry-out side (left side in the figure).

A sheet material carry-in portion 9 is provided on the carry-in side (right side in the drawing) of the cutting table 3. The sheet material carry-in portion 9 has comb-shaped claws formed at its ends, facilitating the carry-in of the sheet material S. Further, a sheet material carry-out portion 10 is provided on the carry-out side (left side in the drawing) of the cutting table 3, and comb-shaped claws are formed at the ends as in the carry-in side. The claws prevent the sheet material S from being caught in the gap between the cutting table 3 and the sheet material unloading portion 10 when the sheet material S is carried out, and the sheet material S can be smoothly carried out from the cutting table 3. can.

A non-breathable nylon sheet NS supply roll 14 is provided on the carry-in side of the main body frame 2 to cover the surfaces of the cutting table 3 and the sheet material S at the time of cutting so that suction force acts on the cutting table 3. Has been done. The supply roll 14 is suspended from support frames 11 erected on both sides of the carry-in side end of the main body frame 2 and can be freely pulled out.

The nylon sheet NS is pulled out onto the sheet material S as the sheet material S is carried in, and covers the sheet material S. As a result, even when the sheet material S is breathable, or when the sheet material S is smaller than the cutting table 3 and the surface of the cutting table 3 is exposed, the airtightness is maintained and the sheet material S is the cutting table. 3 Adsorbed and held on top.

Further, carriages 4 and 4 are provided on both sides of the cutting table 3 along the X direction, and the carriages 4 and 4 are rails 13 and 13 laid on both side surfaces of the main body frame 2 (see FIG. 2). ) Are supported so that they can be moved. The carriages 4 and 4 are movable in the X direction by an appropriate drive source (not shown).

The support beam 5 is suspended on both carriages 4 and 4, and by driving the carriages 4 and 4, the support beam 5 can be freely moved in the X direction integrally with the carriages 4 and 4.

The cutting head 6 is provided on the support beam 5 and is movable in the Y direction along a rail 26 laid on the support beam 5. The cutting head 6 includes a cutting blade 7 for cutting the sheet material S, a sheet retainer 8 for preventing the sheet material S from rising during cutting, and the like.

The cutting blade 7 is an appropriate drive source (not shown) for vertical movement between the upper end separated from the sheet material S and the lower end penetrating the sheet material S and reciprocating vertical movement in a state of penetrating the sheet material S. It is supposed to do. Further, the cutting blade 7 can also rotate with an appropriate drive source (not shown).

The sheet retainer 8 presses the sheet material S by the urging of a cylinder, a spring, or the like, so that the sheet material S does not rise when the cutting blade 7 reciprocates and moves up and down.

The camera 17 is provided above the cutting table 3 and is supported by a support frame 15 erected adjacent to the main body frame 2. At least one camera 17 is provided, and the sheet material S placed on the cutting table 3 is photographed from above. A plurality of the cameras 17 may be provided in consideration of a shooting range, correction of aberrations, and the like. In the present embodiment, four cameras 17 are provided at appropriate intervals.

Further, a lighting unit 16 is provided around the camera 17, and by illuminating the sheet material S, the amount of light taken by the camera 17 is supplemented. If the amount of light is sufficient, shooting may be performed without using the lighting unit 16.

The image data obtained by being S-photographed by the four cameras 17 are combined, recognized as the image data of the entire sheet material S, and sent to the control unit 12.

Next, the sheet material S used in the present invention will be described below with reference to FIGS. 3 to 5.

As shown in FIGS. 3 and 4, a cutting part P such as a sports uniform is printed on the sheet material S with an ink such as a sublimation dye. The cut part P has a contour 21 representing the outer shape, and various designs, characters, and the like are formed inside the contour 21. A thick line can be used for the contour 21 so that it can be easily photographed, and the position of the thick line to be cut can be set as appropriate. It is also possible to cut a position 3 mm from the inside of the thick line, for example, instead of cutting on the thick line.

Further, along the contour 21, a Λ notch 25b, which serves as a mark when sewing, is provided so as to project outward from the contour 21. Further, an instruction mark 20 for instructing a predetermined position of the contour 21 is provided around the outer side of the contour 21.

As shown in FIG. 5, the instruction mark 20 is formed with a first circular mark 20a and a second circular mark 20b having a diameter smaller than that of the first circular mark 20a, and the first circular mark 20a and the first circular mark 20a are formed. The structure is such that the two circular marks 20b are connected by a connecting line 20c. The instruction mark 20 is formed at a position separated from the contour 21 by a predetermined distance. Further, inside the first circular mark 20a, a symbol 22 formed of letters, numbers, other figures and the like is formed.

In the instruction mark 20, a virtual extension line connecting the center point (first center point 23) of the first circular mark 20a and the center point (second center point 24) of the second circular mark 20b is the contour 21. It is formed so as to intersect with a predetermined position of. Then, an I notch 25a and a notch line 27 are formed inside the predetermined position of the contour 21.

Further, the symbol 22 printed inside the first circular mark 20a is assigned a pattern to be cut in advance according to each symbol 22. For example, when the symbol 22 is the letter A, a cut line 27 (for example, 10 cm) is formed inward from the designated position of the contour 21. When the symbol 22 is the letter T, an I notch 25a (for example, 5 mm) is formed inward from the designated position of the contour 21. As described above, by setting the cutting angle, the cutting length, the cutting shape, and the like in advance for each symbol 22, it is possible to correspond to the cutting of a plurality of shapes. Although the I notch 25a and the notch line 27 have been mentioned above as examples, a V notch having an inverted shape of the Λ notch 25b can be formed inside the contour 21.

Next, a procedure for acquiring image data from the cutting part P and the instruction mark 20 printed on the sheet material S will be described below with reference to FIGS. 3 to 5. In FIG. 3, the support means 15 and the lighting unit 16 of the camera 17 are omitted for easy understanding.

As shown in FIG. 3, when the sheet material S on which the cutting parts P and the instruction mark 20 are printed is carried onto the cutting table 3, the nylon sheet NS is covered. Subsequently, suction on the surface of the cutting table 3 is started, and the sheet material S is sucked and held on the cutting table 3. It is preferable to use a transparent material for the nylon sheet NS so as not to interfere with the photographing in the subsequent photographing process.

Subsequently, the lighting unit 16 illuminates the sheet material S, and the four cameras 17 photograph the sheet material S. By the shooting, the image data of the contour 21 of the cutting part P and the instruction mark 20 is obtained. The obtained image data is sent to the control unit 12, and the images taken by the respective cameras 17 are combined. At this time, aberrations and distortions are appropriately corrected. Although a plurality of captured images are combined in the present embodiment, they can be processed as a single image. Further, the image of each cutting part P may be taken by a single camera 17, processing by a single image, or synthesizing each image.

The control unit 12 analyzes the image data and extracts the contour 21 of the cutting part P. When the contour 21 is extracted, the image data is protected (masked) so as not to cut the inside of the contour 21. As a result, the patterns, characters, and the like formed inside the cutting part P are protected, and cutting data is created so as not to cut them.

On the other hand, when the instruction mark 20 is detected around the contour 21 of the cutting part P, the first center point 23 which is the center of the first circular mark 20a and the second center which is the center point of the second circular mark 20b Point 24 is calculated. Further, the symbol 22 printed in the first circular mark 22a is recognized, and the intersection where the extension line connecting the first center point 23 and the second center point 24 intersects the contour 21 is recognized as a predetermined designated position. .. Since the instruction mark 20 is formed at a position separated from the contour 21 by a predetermined distance as described above, the predetermined position of the contour 21 is recognized as an instruction position by detecting the instruction mark 20. It has become.

Upon recognizing the symbol 22 and the designated position, the control unit 12 issues a control command to cut the designated position according to a cutting pattern preset for the symbol 22. The cutting device 1 that receives the control command drives the cutting head 6 in accordance with the control command, cuts the cutting part P along the contour 21, and cuts the inside of the contour 21 at a predetermined position, a notch, and a notch. Alternatively, cut into other shapes.

By forming the instruction mark 20 as described above, for example, the inside of the contour 21 is protected from being cut, and only the portion of the instruction position indicated by the instruction mark 20 is allowed to be cut inside the contour 21. Can be done. Therefore, even if there is a character such as a character or a line pattern design inside the cutting part P, the cutting part P can be cut accurately without accidentally cutting, and the pattern to be printed inside the cutting part P. It is possible to increase the degree of freedom in designing characters and characters. In addition, the degree of freedom of the pattern, character, etc. of the sheet material S to be used can be increased. If there is a pattern in the cutting part P that is difficult to distinguish from the contour 21, the thickness of the contour 21 may be different. If the pattern of the sheet material S, the character printed on the cutting part P, or the like is similar to the design of the instruction mark 20 and difficult to recognize, the shape of the instruction mark 20 may be changed as appropriate.

Further, for example, by using the instruction mark 20 to set the notch to be provided from a position separated from the contour line by a predetermined distance and instructing the predetermined position, the inside of the cutting part P can be hollowed out. Further, the cutting position and the cutting pattern can be specified by the combination of the plurality of instruction marks 20.

The above is the configuration of the present invention, but it can be appropriately modified within the scope of the invention. In the present embodiment, the first circular mark 20a and the second circular mark 20b are used as the instruction marks 20, but regardless of the shape, various shapes such as triangles, quadrangles, and other polygons can be used. Can be used. Further, instead of the circular mark, various symbols, characters, shapes or combinations thereof may be used, and various shapes can be used as long as they can be recognized and can be distinguished from the contour. Further, in the present embodiment, the instruction mark 20 is formed by two marks, the first circular mark 20a and the second circular mark 20b, but it may be a single mark or three or more marks. ..

Further, in the present embodiment, a fiber sheet such as a uniform is used, but it may be used for cutting leather, paper, rubber sheet, resin sheet and the like. Further, in the present embodiment, the inside of the contour 21 of the cutting part P is cut, but the outside of the instruction mark 20 may be cut into a predetermined shape.

S Sheet material NS Nylon sheet P Cutting parts 1 Cutting device 2 Main body frame 3 Cutting table 4 Carriage 5 Support beam 6 Cutting head 7 Cutting blade 8 Sheet presser 9 Sheet material carry-in part 10 Sheet material carry-in part 11 Support frame 12 Control part 13 Rail 14 Supply roll 15 Support frame 16 Lighting unit 17 Camera (shooting means)
20 Instruction mark 20a 1st circular mark 20b 2nd circular mark 20c Connecting line 21 Contour 22 Symbol 23 1st center point 24 2nd center point 25a I notch 25b Λ notch 26 Rail 27 Notch line

Claims (8)

A cutting table on which the sheet material on which the cutting parts are formed is placed, and
With a cutting head that can move the upper surface of the cutting table horizontally,
A photographing means for acquiring image data of the cutting parts by photographing the sheet material placed on the cutting table, and
A cutting device including a control unit that extracts the contour of the cutting part from the image data, creates cutting data from the contour, outputs the cutting data to the cutting head, and controls the cutting head based on the cutting data. In
The sheet material is formed with at least one instruction mark indicating a predetermined position of the contour around the outer periphery of the contour of the cutting part.
The photographing means is configured to detect the instruction mark.
The control unit controls the cutting head based on the cutting data along the contour and a control pattern in which a predetermined position of the contour designated by the instruction mark is assigned to the instruction mark in advance, thereby controlling the sheet. A cutting device characterized in that the material is cut. The instruction mark includes a first circular mark and a second circular mark, and is configured to indicate an intersection of an extension line connecting the center points of the first circular mark and the second circular mark and the contour. The cutting device according to claim 1, wherein the cutting device is characterized by the above. The instruction mark is characterized in that a symbol to which a control pattern to be cut is assigned is formed, and when the control unit recognizes the symbol, the sheet material is cut according to the control pattern. Alternatively, the cutting device according to any one of claim 2. Any of claims 1 to 3, wherein the inside of the contour of the image data is protected as an uncut portion, and cutting of the inside of the contour is allowed at the position indicated by the instruction mark. Cutting device described in Crab. Place the sheet material on which the cutting parts are formed on the cutting table, and place it on the cutting table.
The sheet material is photographed to acquire the image data of the cut parts, and the image data is acquired.
The contour of the cut part is extracted from the image data, and the cut data is created from the contour.
In the cutting method for cutting the sheet material based on the cutting data,
At least one instruction mark indicating a predetermined position of the contour is formed on the sheet material around the outer side of the contour of the cutting part.
When acquiring the image data of the cut part, the image data of the contour and the instruction mark is acquired, and the image data is acquired.
The sheet material is cut along the contour, and the instruction mark is characterized in that the sheet material is cut at a predetermined position of the contour indicated by the instruction mark according to a control pattern assigned to the instruction mark. Cutting method to do. The instruction mark includes a first circular mark and a second circular mark, and is configured to indicate an intersection of an extension line connecting the center points of the first circular mark and the second circular mark and the contour. The cutting method according to claim 5, wherein the cutting method is characterized by the above. 5. The instruction mark is characterized in that a symbol to which a control pattern to be cut is assigned is formed, and when the control unit recognizes the symbol, the sheet material is cut according to the control pattern. Alternatively, the cutting method according to any one of claim 6. 7. Cutting method described in Crab.

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