JP5924917B2 - Dough cutting device - Google Patents

Description

  The present invention relates to a fabric cutting apparatus that can be suitably used when cutting a fabric part from a material fabric.

  A fabric cutting device used when cutting out body parts such as body parts and sleeves from a material fabric is well known (see, for example, Patent Document 1). This dough cutting device simultaneously moves up and down on the dough table, horizontally swivels, linear movement with a fixed swivel angle, and fine horizontal swivels on a cutting head having a rotary blade such as a round blade (circular blade). The pseudo-curve movement or the like (hereinafter collectively referred to as “moving operation”) is performed. As a material material to be cut, it is common to use a long material in a strip shape unwound from a material roll.

By the way, a part pattern (a display object obtained by printing the shape of a fabric part to be cut out by an inkjet device) is displayed in each of a plurality of pattern sections assumed along the longitudinal direction of the material cloth. There is a case. In this case, in the cloth cutting device, it is necessary to set a cutting program corresponding to each pattern section prior to cutting.
The cutting program assumes that various cutting conditions (moving speed, feed speed, etc.) are added to cutting data combining part pattern placement (contour coordinates) in the pattern section by the number of part patterns placed. Composed. A variety of cutting data and cutting conditions are stored in the database in advance, and a suitable one is read from the database. That is, the fabric cutting apparatus performs cutting while moving the cutting head in accordance with a cutting program generated based on these cutting data and cutting conditions.

  However, in addition to the fiber characteristics, the material dough expands and contracts due to various treatments such as pretreatment such as bleaching and post treatment such as drying. Therefore, the applicant applies correction according to the displacement and deformation of the part pattern due to the expansion and contraction of the material cloth to the cutting program, and performs accurate cutting according to the contour of the part pattern (fabric part). Have been developed and a patent application has already been filed (Patent Document 1). In this cloth cutting device and cloth cutting method, even if the material cloth cannot be detected on the basis of the cloth edge because the cloth edge is not a straight line, such as a belt-shaped cloth unwound from the cloth roll, the correction is performed. Has the feature of being possible.

JP 2011-1995979 A

In the fabric cutting device and the fabric cutting method (Patent Document 1) filed by the present applicant, a point mark displayed by printing or the like on the material fabric is detected by a two-dimensional camera (area camera), and the point mark is detected. A method is adopted in which the expansion / contraction state of the material fabric is determined based on the coordinates, and the arrangement and shape of the part pattern are corrected according to the determined expansion / contraction state.
For this reason, when starting correction, the material cloth is loaded onto the cloth table (the position where the cutting operation is performed), stopped, and then the 2D camera is moved above the material cloth toward the upper position of the point mark. It is necessary to read the point mark.

  Therefore, if the fabric width of the material fabric (the dimension in the direction orthogonal to the direction of unwinding and transporting from the fabric roll) is a standard size (for example, around 1000 mm), the correction process can be executed without any problem. However, when trying to make the material width wider than the standard size, the movement distance of the two-dimensional camera becomes longer, and the cycle time becomes slower accordingly.

  In other words, widening the material fabric may be a bad factor in improving the efficiency of the cutting operation. On the other hand, widening the material fabric cuts out many fabric parts within one cycle of the cutting operation. Therefore, it has an aspect that it is an element necessary for improving the efficiency of the cutting work. As described above, there is a conflicting problem between the widening of the material cloth and the high efficiency of the cutting operation.

  The present invention has been made in view of the above circumstances, and it is possible to perform correction processing for displacement and deformation of part patterns in a short time even when a wide material cloth is used, and this correction processing is performed for the entire cutting operation. It is an object of the present invention to provide a fabric cutting apparatus that does not adversely affect the cycle time of the sheet and can improve the efficiency of the cutting operation even when a wide material fabric is used.

  The present invention is not a method for incurring a high device cost and a complicated correction process such as the use of a large number of two-dimensional cameras. An object of the present invention is to provide a cloth cutting device capable of improving the efficiency of cutting work including correction processing.

In order to achieve the above object, the present invention has taken the following measures.
That is, the fabric cutting device according to the present invention includes a fabric table that supports the material fabric on which the display object is displayed in an expanded state, and a cutting table that is provided above the fabric table and cuts the material fabric on the fabric table. A head, a head moving mechanism that moves the cutting head up and down, horizontally swivels, and horizontally, and a detection unit that detects a display object from a material cloth on the cloth table, and the detection unit includes the material A light source that irradiates the display object with a uniform illuminance over a transverse direction that crosses the display object at least in a straight line, and a position that can receive reflected light due to the reflected light from the material cloth reflected along the transverse direction. a line sensor camera installed so as to parallel the plurality of light receiving elements Te Align, thereby integrally run and the line sensor camera and the light source in the same direction and the same speed Wherein the light source and the line sensor camera is a detectable constitutive display of material fabric during traveling by the traveling mechanism comprises a row mechanism.

The line sensor camera of the detection unit is preferably configured to be able to receive the reflected light as a single angle of view that does not overlap over the entire array of the light receiving elements.
The light source of the detection unit is disposed in a lower portion adjacent to the material fabric and is formed in a long shape capable of irradiating the display material of the material fabric over the entire transverse direction, and the line of the detection unit sensor cameras, have good that assumed to be arranged the display of the material cloth while away upward from the light source to the higher portion which can be accommodated within the angle of view of the transverse direction.

The fabric table is provided with a transport mechanism that enables the material fabric on the table to be transported. The transport mechanism is stopped and the material fabric is stopped and supported on the fabric table. It is preferable that the traveling mechanism travels the line sensor camera and the light source.
The dough table has a cutting zone in which the cutting head can be moved by the head moving mechanism, and a detection zone provided adjacent to the cutting zone, and the cloth table corresponds to the detection zone. It is preferable that a detection unit is provided.

  In this case, it is preferable that the dough table is provided with a carrying mechanism for carrying the dough with the detection zone as the primary side in the carrying direction and the cutting zone as the secondary side in the carrying direction.

  In the cloth cutting device according to the present invention, even when a wide material cloth is used, correction processing for displacement and deformation of part patterns can be performed in a short time, and this correction processing adversely affects the cycle time of the entire cutting work. You can prevent it from happening. As a result, it is possible to improve the efficiency of the cutting operation even when a wide material cloth is used. Further, the apparatus cost is not increased and the correction process is not complicated.

It is the sectional view on the AA line of FIG. It is the top view showing one embodiment of the cloth cutting device concerning the present invention. It is the perspective view which showed the cutting zone. It is the perspective view which showed the detection zone. It is the front view which showed the positional relationship of a line sensor camera, a light source, and raw material cloth. It is the top view which showed one pattern division about an example of raw material cloth.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 to 5 show a first embodiment of a dough cutting apparatus 1 according to the present invention. The cloth cutting device 1 can perform appropriate cutting with high efficiency and no dislocation or deformation even for a wide material (for example, 2000 mm) as a material cloth W to be cut. ing.

  In the present embodiment, it is assumed that the material dough W is a belt-like long material unwound from the dough roll R. Accordingly, the longitudinal direction of the material fabric W is the left-right direction (X direction) in FIG. 2, and the fabric conveyance is performed along this longitudinal direction (that is, the longitudinal direction of the material fabric W is the conveyance of the material fabric W). The width direction of the material dough W is the vertical direction in FIG. 2 (the Y direction intersecting perpendicularly to the X direction). Moreover, the up-down direction regarding the cloth cutting apparatus 1 is the up-down direction of FIG.

FIG. 6 shows an example of the material dough W. Display materials such as a part pattern H, a cutting code C, and point marks P1 to P8 are displayed on the material cloth W by ink jet textile printing or the like. These display objects are arranged for each of a plurality of pattern sections L assumed at predetermined intervals along the longitudinal direction (X direction) of the material cloth W.
The part pattern H displays the shape of the fabric part to be cut out. The cutting code C and the point marks P1 to P8 will be described later. In each pattern section L, the number of part patterns H (including “1”) necessary to constitute one piece of clothing is grouped, and a plurality of groups ( In the example shown in the figure, Ha, Hb, and Hc are divided into three portions).

  However, the number of groups arranged in one pattern section L is not particularly limited. In the first place, it is not limited whether each group is configured with a part pattern H required for one piece of clothing, and the size, shape, arrangement, etc. of the part pattern H can be changed as appropriate. In the example shown in the drawing, the pattern section L is defined by the partition lines D so that the pattern sections L are visually clear. However, the partition lines D can be omitted.

As shown in FIGS. 1 to 5, the fabric cutting apparatus 1 according to the present invention includes a fabric table 2, a cutting head 3, a head moving mechanism 4, and a detection unit 5.
First, the dough table 2 will be described. The dough table 2 is where the material dough W is supported in an unfolded state. Note that it is only necessary to support at least a region (one pattern section L) to be cut in one cycle operation. However, in this embodiment, the dough table 2 has a cutting zone and a detection zone adjacent to each other as a region where the material dough W can be supported. Therefore, in this embodiment, the dough table 2 is formed in a size that can support at least two pattern sections L.

As described above, in the dough table 2 having the cutting zone and the detection zone, the cutting zone is formed as an area where the cutting head 3 and the head moving mechanism 4 operate. The detection zone is formed as a region where the detection unit 5 operates.
The dough table 2 is provided with a transport mechanism 6 in a direction (a direction from the right side to the left side in FIG. 1) in which the detection zone is a primary side in the transport direction and the cutting zone is a secondary side in the transport direction. The material dough W supported on the upper surface of the dough table 2 can be conveyed without transfer.

  In the present embodiment, the transport mechanism 6 allows the belt conveyor 8 having a wide endless belt corresponding to the width of the material fabric W and the belt conveyor 8 to run continuously or intermittently according to the transport direction. An example constituted by the belt drive unit 9 is illustrated. That is, the upper portion 8 a of the belt conveyor 8 forms the dough table 2.

  The belt of the belt conveyor 8 is made of a material having air permeability (for example, a felt material or a screen material). And between the upper and lower parts of the upper part 8a and the lower part 8b of the belt conveyor 8, there is provided a suction head 10 having a suction port in contact with the lower surface of the upper part 8a (fabric table 2). The suction head 10 is formed in a compact size that sucks only an area corresponding to the lower part of the cutting head 3 (a rotary blade 20 described later).

  A suction unit moving mechanism 12 for moving the suction head 10 horizontally is provided between the upper and lower portions 8a and 8b of the belt conveyor 8. As will be described later, when the cutting head 3 is horizontally moved by the head moving mechanism 4 above the dough table 2, the suction unit moving mechanism 12 moves the suction head 10 below the dough table 2 to the cutting head 3. It is for moving integrally (moving in the same direction and at the same speed).

The suction part moving mechanism 12 may be configured using a winding drive mechanism, a feed screw mechanism, a gear mechanism, or the like. The drive source may be a position-controllable motor such as a stepping motor or servomotor, and the detailed structure thereof is not limited at all.
The suction head 10 is connected to a suction device 14 such as a vacuum generator or a blower via a flexible hose 13. Therefore, by operating this suction device 14, the air on the fabric table 2 can be sucked down the table surface, and the material fabric W on the fabric table 2 can be sucked and held on the table surface. As a result, the material dough W can be easily and reliably cut by the cutting head 3.

Note that the dough table 2 is not limited to being configured by the belt conveyor 8, and can be formed by a fixed plate. The suction head 10 may also be configured to suck the entire lower surface of the dough table 2.
Next, the cutting head 3 and the head moving mechanism 4 provided corresponding to the cutting zone of the dough table 2 will be described.

  The cutting head 3 is held above the dough table 2 by the head moving mechanism 4 in the cutting zone, and is where the material dough W supported on the dough table 2 is cut. The cutting head 3 has a structure in which, for example, a rotary blade 20 such as a round blade is driven to rotate about a horizontal axis. In addition to the rotary blade method, a notch blade method that moves up and down at a high speed and a laser method can also be employed.

The head moving mechanism 4 is for moving the cutting head 3 held above the dough table 2. The head moving mechanism 4 includes a feeding unit 21, a turning unit 22, and an elevating unit 23.
The feeding unit 21 is a direction parallel to the conveyance direction by the conveyance mechanism 6 (belt conveyor 8) of the dough table 2 (same as the X direction) or a direction orthogonal to the X direction in the horizontal plane (same as the Y direction). The cutting head 3 is horizontally moved toward one of them, or an oblique direction in which the X direction and the Y direction are appropriately combined.

The swivel unit 22 horizontally moves the cutting head 3 so that the cutting edge of the rotary blade 20 is aligned with the direction in which the feeding unit 21 moves the cutting head 3 horizontally (always the cutting edge is directed toward the tip of the moving direction). Turn.
The raising / lowering unit 23 raises and lowers the cutting head 3 between a height at which the lower end of the rotary blade 20 contacts the material cloth W on the cloth table 2 and a height at which the lower edge retracts upward.

  The mechanism for causing the feed unit 21 to perform horizontal movement, the mechanism for causing the turning unit 22 to perform horizontal turning, and the mechanism for raising and lowering using the elevating unit 23 may be configured using a winding drive mechanism, a feed screw mechanism, a gear mechanism, or the like. That's fine. Further, a position controllable motor such as a stepping motor or a servo motor may be used as a drive source at a portion where high accuracy is required for the stop position, and the detailed structure thereof is not limited at all.

Next, the detection part 5 provided corresponding to the detection zone of the above-mentioned dough table 2 is demonstrated. The detection unit 5 is held above the dough table 2 in the detection zone, and displays materials (part pattern H, cutting code C, point marks P1 to P8, etc.) from the material dough W supported on the dough table 2. ).
The detection unit 5 includes a light source 27 held at a height close to the upper surface of the dough table 2 and a line sensor camera 28 provided separately from the light source 27 upward. Further, the detection unit 5 includes a traveling mechanism 29 for causing the light source 27 and the line sensor camera 28 to travel above the material fabric W while being held in an integral positional relationship. That is, the detection unit 5 is configured to detect the display object of the material fabric W while the light source 27 and the line sensor camera 28 are running.

  The light source 27 irradiates the material dough W with uniform illuminance at least across the transverse direction that crosses the display object linearly. Here, the “transverse direction” may be the longitudinal direction (X direction) or the width direction (Y direction) of the material dough W, or may be an oblique direction existing between the X direction and the Y direction. In the present embodiment, the width direction (Y direction) of the material dough W is set as the “transverse direction”.

  As the light source 27, a structure in which a straight fluorescent tube is lit with a high frequency power source, a structure in which a large number of LEDs are arranged side by side and light is emitted simultaneously, a structure in which laser light is irradiated in a line shape, or the like can be employed. When the light source 27 uses a fluorescent tube or LED, as shown in FIGS. 2, 4 and 5, the light emitting portion has a length that crosses the material cloth W in the width direction (transverse direction with respect to the display object). It is preferable to form a long shape (a shape that is long in the horizontal direction) so that the length is substantially the same or longer.

  In addition, the light source 27 is disposed in a lower portion adjacent to the material fabric W supported by the fabric table 2 when a fluorescent tube or LED is used. The light source 27 is preferably maintained in a parallel state with respect to the display material of the material cloth W. By adopting such an arrangement and shape, the light source 27 can cause a strong illuminance to the display object of the material fabric W while suppressing an increase in size and cost, and as described above. A uniform illuminance can be maintained in the transverse direction.

As to how close the light source 27 is to the material fabric W (how low it is), the above-described increase in size and cost, and the intensity and uniformity of illuminance are This is set specifically within a range where the obtained effect can be enjoyed.
In the case where the light source 27 is of a laser type, the light source 27 may be provided in a high-order part separated above the material fabric W.

The line sensor camera 28 is configured by arranging a plurality of light receiving elements 30 in a line as shown in FIG. Needless to say, all the light receiving elements 30 are provided downward (
Directed to the material fabric W supported on the fabric table 2). Therefore, it is possible to receive the reflected light caused by the irradiation light from the light source 27 being reflected by the material cloth W.
The line sensor camera 28 is installed so that the light receiving elements 30 are arranged in the transverse direction (that is, the width direction of the material cloth W = the Y direction), and the display object of the material cloth W is displayed. It is arranged at a high position that can be accommodated within the transverse field angle θ.

  In the present embodiment, the line sensor camera 28 is configured to receive reflected light as a single angle of view θ (detection region S) that does not overlap over the entire array of light receiving elements 30 (single control). A configuration in which all the light receiving elements 30 are incorporated in the circuit and the collected data can be controlled as a single image is used. Further, in order to enlarge the angle of view θ more greatly while suppressing the number of the light receiving elements 30 as much as possible, the wide angle lens 31 is attached.

Note that the angle of view θ that is enlarged by the wide-angle lens 31 exceeds the length that traverses the material fabric W in the width direction (transverse direction with respect to the above-described display object) so that the distortion component of the outer peripheral portion of the lens can be eliminated. It is preferable to secure the detection area S (W <S).
The traveling mechanism 29 has a light source driving unit 37 that causes the light source 27 to travel while maintaining a constant height at the above-described lower portion, and a camera driving unit that causes the line sensor camera 28 to travel while maintaining a certain height at the above-described high portion. 38 and a synchronizer 39 that synchronizes both the drive units 37 and 38.

The light source driving unit 37 and the camera driving unit 38 need to cause the light source 27 and the line sensor camera 28 to travel at the same speed. Therefore, a motor capable of high-precision drive control, such as a stepping motor or a servo motor, is employed as the drive source for the light source drive unit 37 and the drive source for the camera drive unit 38.
Further, the detection operation (scanning by each light receiving element 30) by the line sensor camera 28 needs to be tuned on the basis of the running signal (output obtained by the encoder) of the line sensor camera 28. For this reason, in particular, the traveling driving of the line sensor camera 28 by the camera driving unit 38 requires a stable traveling that eliminates traveling vibration and shaking. Therefore, in the present embodiment, a sturdy frame structure 40 is constructed, and the line sensor camera 28 is held with respect to the frame structure 40 via a linear guide means 41 such as a linear guide so as to move smoothly. It is.

The frame structure 40 includes a plurality of support columns 42 erected so as to straddle the transport mechanism 6 (belt conveyor 8) of the dough table 2, and a cross member 43 provided so as to bridge between the upper portions of the support columns 42. Is built by. The cross member 43 extends over a height that exceeds the height of the operator, and the linear guide means 41 described above is supported through the cross member 43.
The frame structure 40 is preferably configured so that vibrations of the fabric table 2 and the like are not transmitted to the travel of the line sensor camera 28. Therefore, the support column 42 may be erected in a non-contact state with the dough table 2 or may be erected by being joined to the dough table 2 via an appropriate cushioning material.

The synchronization unit 39 is configured to perform control for causing the light source 27 and the line sensor camera 28 to integrally travel in the same direction and at the same speed.
The light source drive unit 37 and the camera drive unit 38 have a structure using a common drive source, and the drive is distributed from the drive source by a winding transmission mechanism such as a chain or a belt or a gear transmission mechanism. You can also. In this case, the synchronization unit 39 is composed of mechanical elements such as a winding transmission mechanism and a gear transmission mechanism.

Next, an example of a method for cutting out a fabric part by using the fabric cutting apparatus 1 according to the present invention so as to match or follow the contour of the part pattern H displayed on the material fabric W will be described. First, the description of the material dough W will be supplemented.
Of the display objects (part pattern H, cutting code C, point marks P1 to P8, etc.) displayed on the material fabric W, the cutting code C indicates a cutting program for cutting out the part pattern H from the pattern section L. It is.

In the material fabric W used in the present embodiment, as described above, the part pattern H necessary for constituting one piece of clothing is grouped for each pattern section L, and the width direction of the material fabric W is determined. A plurality of groups are arranged in a distributed manner. For this reason, the same number of cutting codes C as the number of groups arranged in the pattern section L (3 pieces of Ha, Hb, and Hc) are arranged so as to be attached to each group.

As described above, the cutting program combines various cutting conditions (moving speed and feed rate of the rotary blade 20) with cutting data obtained by combining the arrangement (contour coordinates) of the part pattern H in the pattern section L by the number of arrangements of the part pattern. Speed).
A wide variety of cutting data and cutting conditions are stored in advance in a database provided in the fabric cutting apparatus 1, and the data designated by the cutting code C is read out and combined.

  The cutting code C may be, for example, a one-dimensional code (so-called barcode) or a two-dimensional code (so-called QR code (registered trademark)). The cutting code C is not limited in the arrangement or the number of arrangement with respect to the pattern section L, and may be inside or outside the pattern section L. It is also possible to “display the cutting code C” by pasting the label on which the cutting code C is printed on the material cloth W.

  The point marks P1 to P8 are arranged so as to surround a group of part patterns H arranged in the pattern section L (in the example shown, the part patterns Ha, Hb, and Hc are groups constituting one part). Has been. That is, the point marks P1, P2, and P3, P4 are arranged away from each other in the longitudinal direction of the material cloth W, and the point marks P1, P3, P2, and P4 are arranged away from each other in the width direction of the material cloth W.

Furthermore, point marks P5 and P6 indicating intermediate positions between the point marks P1 and P2 and between the point marks P3 and P4 are displayed, respectively. Similarly, point marks P7 and P8 indicating intermediate positions between the point marks P1 and P3 and between the point marks P2 and P4 are displayed.
These point marks P <b> 1 to P <b> 8 can be beneficially used for specifying the arrangement of each group (part patterns Ha, Hb, Hc) and the size required for the arrangement. Further, it can be used beneficially to specify the overall size and arrangement of the pattern sections L.

In the pattern section L, even if an indirect positional relationship occurs between the arrangement of the part pattern H and the arrangement of the point marks P1 to P8, no direct and unambiguous positional relationship is provided. . Therefore, even if the part pattern H is changed, it is not necessary to change the arrangement of the point marks P1 to P8 with respect to the pattern section L.
These point marks P1 to P8 are methods other than textile printing (for example, making the knitting structure of the material fabric W itself partially different, providing irregularities and holes, or attaching adherents such as adhesives and seals) (Method).

Next, an actual operation state by the fabric cutting apparatus 1 will be described.
When the material dough W is unwound from the dough roll R (see FIG. 1) onto the dough table 2, the leading pattern section L of the material dough W in the unwinding direction is within the detection zone of the dough table 2. Then, the transport mechanism 6 of the dough table 2 is temporarily stopped. At this time, the material fabric W is not yet supplied to the cutting zone of the fabric table 2.

At this stage, the detection unit 5 first activates the travel mechanism 29 (the light source drive unit 37, the camera drive unit 38, and the synchronization unit 39) to cause the light source 27 and the line sensor camera 28 to travel together in the same direction and at the same speed. .
In addition, while the light source 27 and the line sensor camera 28 are traveling, the material cloth W is irradiated by the light source 27 and the reflected light is detected by the line sensor camera 28, and all the pattern sections L in the detection zone are detected. Read the display.

That is, the part pattern Ha and the cutting code C and point marks P1 to P8 attached to the part pattern Ha, the part pattern Hb and the cutting code C and point marks P1 to P8 attached to the part pattern Hb, the part pattern Hc and the part The cutting code C and point marks P1 to P8 attached to the pattern Hc are read.
The display object may be read by an image matching method. The image matching method is a discrimination method in which data detected as image data is matched with image data (master pattern) stored in advance to read it as related predetermined coordinates (image center point or the like).

  Then, the initial cycle for cutting out the part patterns Ha, Hb, and Hc is set based on each cutting code C that has been read. The initial cycle is set by reading cutting data and cutting conditions indicated by each cutting code C from the database and generating a cutting program. This cutting program is not configured separately for each part pattern Ha, Hb, Hc, but is configured as one program for the entire pattern section L.

  On the other hand, based on the read point marks P1 to P8, the expansion / contraction rate (the degree of expansion / contraction generated when the textile fabric W is subjected to the printing process) is obtained and the expansion / contraction is obtained. Based on the ratio, the position data of each part pattern Ha, Hb, Hc and the correction data corresponding to the deformation of each part pattern Ha, Hb, Hc (stretching deformation and distortion deformation) are created. The cutting program generated as follows is corrected.

  In order to obtain the expansion / contraction rate generated in the pattern section L, for example, as follows. That is, first, for a group including one part pattern Ha (one portion), a section surrounded by point marks P1-P2-P8-P7-P1 and a section surrounded by point marks P3-P7-P8-P4-P3. Dividing into two sections and obtaining the expansion / contraction ratio for each of the two sections.

Next, for the same group including the part pattern Ha (one portion), a section surrounded by point marks P1-P5-P6-P3-P1, and a section surrounded by point marks P5-P2-P4-P6-P5 These are divided into two sections, and the expansion / contraction rate is obtained for each of the two sections.
As a result, the vertical / horizontal expansion / contraction ratios are obtained for each of the subdivisions divided into four for the group including the part pattern Ha (one portion). In this way, hereinafter, for each group including the part patterns Hb and Hc (one for each), the vertical and horizontal expansion ratios are obtained for each of the subdivisions divided into four.

After that, correction data as a whole of the pattern section L is created by comprehensively adopting the expansion / contraction ratios of these part patterns Ha, Hb, Hc, and the cutting program generated as described above is corrected by this correction data. The corrected cutting program is sent to the head moving mechanism 4.
Next, the conveyance mechanism 6 of the cloth table 2 is operated to cut the pattern section L (the pattern section L that has been generated and corrected and is ready for cutting) that has been stopped in the detection zone. Move towards the zone. When the pattern section L reaches the cutting zone and is settled, the transport mechanism 6 of the dough table 2 is stopped (the state shown in FIG. 1 is set). Naturally, when the transport mechanism 6 is operated, the material dough W is unwound from the dough roll R onto the dough table 2, so that a pattern section L for cutting in a later cycle is carried into the detection zone and stopped. Will do.

  It should be noted that the interval between the cutting zone and the detection zone on the fabric table 2 and the pitch of the pattern section L displayed on the material fabric W may naturally not match. Therefore, the position where the pattern section L is stopped in the cutting zone or the detection zone may be different every time. In addition, another pattern section L may be included between the pattern section L stopped in the cutting zone and the pattern section L stopped in the detection zone.

  For these cases, the moving region of the cutting head 3 in the cutting zone and the moving region of the light source 27 and the line sensor camera 28 in the detection zone are changed in position along the longitudinal direction of the material fabric W. The arrangement (stop position) of the material dough W that is convenient for both zones may be set. At this time, the transport mechanism 6 of the dough table 2 may be moved in a direction opposite to the transport direction to finely adjust the arrangement of the material dough W. In this way, it is possible to correspond to various pitches of the pattern sections L displayed on the material cloth W.

Next, in the cutting zone of the fabric table 2, the cutting head 3 and the head moving mechanism 4 are controlled based on the corrected cutting program, and each part pattern Ha from the pattern section L stopped in the cutting zone. , Hb, and Hc are cut so as to match or follow the contours, and are cut out as fabric parts.
When this cutting is performed, the detection unit 5 operates the traveling mechanism 29 (the light source drive unit 37, the camera drive unit 38, and the synchronization unit 39), and the light source 27 and the line sensor camera 28 are moved in the same direction and at the same speed. Run together.

In addition, while the light source 27 and the line sensor camera 28 are traveling, the material cloth W is irradiated by the light source 27 and the reflected light is detected by the line sensor camera 28, and all the pattern sections L in the detection zone are detected. Read the display.
When the cutting in the cutting zone and the detection in the detection zone are completed, the conveyance mechanism 6 of the dough table 2 is operated, and the cut out dough parts and cutting baskets are carried out from the dough table 2. This completes the one cycle operation.

By the operation of the transport mechanism 6, the pattern section L (or another pattern section L) stopped in the detection zone is moved to the cutting zone, and a new pattern section L is carried into the detection zone. Thus, thereafter, the cycle operation is repeated in the same manner.
As is apparent from the above description, in the fabric cutting apparatus 1 according to the present invention, the line sensor camera 28 is caused to travel only once above the material fabric W supported by the fabric table 2 in a stopped state. Within a short period of time, the display object (part pattern H, cutting code C, point marks P1 to P8, etc.) of the material fabric W can be detected (read) at once.

In addition, while performing the cutting of the material dough W (cutting out the dough parts) in the cutting zone of the dough table 2, the display object of the material dough W can be detected in parallel in the detection zone of the dough table 2.
From these things, in the cloth cutting device 1 according to the present invention, the cycle operation of cutting out the cloth parts from the pattern section L of the material cloth W in accordance with or along the contour of the part pattern H (Ha, Hb, Hc, etc.) The cycle time can be shortened (high efficiency).

Therefore, the cycle time of the material dough W is slow even if the dough width is not only a standard size but also a wide width exceeding the standard size (for example, a size exceeding 1000 mm). Absent.
Accordingly, it is possible to cut out a large number of fabric parts within one cycle of the cutting operation by adopting widening of the material fabric W, and as a result, it is possible to increase the efficiency of the cutting operation. Needless to say, even if the material cloth W is wide, the correction process for the displacement and deformation of the part pattern H can be performed in a short time, so this correction process does not adversely affect the cycle time of the entire cutting operation.

  In principle, there is no numerical standard for the width of the material fabric W to be wide. Accordingly, in this specification, “wide” is referred to from the following viewpoint. That is, in the case where a plurality of groups of part patterns H (a group of part patterns H necessary for constituting a single garment) are arranged in the width direction of the material fabric W, the material fabric W Since the width dimension becomes wide, such a wide material cloth W is called a wide width. Accordingly, when a group of part patterns H is singly arranged in the width direction of the material fabric W, it is called a standard size.

  In the cloth cutting device 1 according to the present invention, the line sensor camera 28 is used to detect the display object of the material cloth W, the line sensor camera 28 and the light source 27 are separated in the vertical direction, and the light source 27 and the line are separated. A configuration in which the sensor camera 28 is caused to travel integrally is employed. For this reason, even if the width of the material dough W is widened, the cost of the apparatus is not increased and the correction process is not complicated.

By the way, this invention is not limited to the said embodiment, It can change suitably according to embodiment.
For example, the material quality and thickness of the material fabric W are not limited at all, and may be a natural material or a synthetic fiber material, and may be a nonwoven fabric or the like depending on the case. Moreover, it is not limited whether it is a wide size or a standard size.

The material dough W is not limited to the belt-like dough, and may be a single piece of cloth that is roughly cut in the longitudinal direction (X direction) to a predetermined length. Further, the shape, size, arrangement, number of arrangement of the part pattern H, the type and arrangement of the cutting code C, the number of arrangement, the arrangement and the number of arrangement of the point marks P1 to P8 are not limited at all.
The generation of the cutting program using the cutting code C is not limited, and includes the case where the cutting code C is not displayed and the case where the cutting code C is displayed for another purpose. Further, the correction of the cutting program using the point marks P1 to P8 is not limited, and includes a case where correction is not performed.

Not only when cutting out a fabric part so that it matches or follows the contour of the part pattern H, but also by including a part or all of the part pattern H and having a positional relationship with the part pattern H You may make it cut out dough-shaped parts.
The light source 27 of the detection unit 5 is required to provide a strong and uniform illuminance to the display material of the material fabric W, and it is necessary to use a large luminaire, to a higher level part far away from the material fabric W. You may make it perform arrangement | positioning, fixed (non-moving) installation, etc.

A plurality of line sensor cameras 28 of the detection unit 5 may be provided in the transverse direction while generating an overlap region. By doing so, it is possible to adopt a structure in which a plurality of small cameras with a small number of light receiving elements 30 arranged are connected and arranged, and cost can be reduced.
The dough table 2 is not limited to be configured to hold the material dough W in a stopped state by suction, and may not include a suction mechanism.

In the detection zone of the fabric table 2, when the material fabric W is transported by the transport mechanism 6 of the fabric table 2, in addition to the method of detecting the display object of the material fabric W while running the light source 27 and the line sensor camera 28, A method of detecting a display object of the material cloth W using the light source 27 and the line sensor camera 28 that are fixed (or stopped) may be employed.
Different part patterns H may be displayed in accordance with the order of selection by the purchaser of clothes for each pattern section L of the material fabric W or each group arranged in a distributed manner in the width direction. In this case, different cutting codes C may be displayed so as to indicate different cutting programs for each pattern section L and for each group.

  In this way, it is possible to respond flexibly and quickly to the needs of purchasers who want to purchase clothing and the like, and it is possible to reduce costs. For example, whenever a purchaser of clothes (whether the same person or different person) selects a part pattern H by appropriately combining sizes, shapes, colors, patterns, etc., based on the desired sensibilities and requirements, the selection is made. Accordingly, the part pattern H can be assigned to each pattern section L in order.

DESCRIPTION OF SYMBOLS 1 Material cutting device 2 Material table 3 Cutting head 4 Head moving mechanism 5 Detection part 6 Conveyance mechanism 8 Belt conveyor 8a Upper part 8b Lower part 9 Belt drive part 10 Suction head 12 Suction part moving mechanism 13 Flexible hose 14 Suction device DESCRIPTION OF SYMBOLS 20 Rotating blade 21 Feed part 22 Turning part 23 Lifting part 27 Light source 28 Line sensor camera 29 Traveling mechanism 30 Light receiving element 31 Wide angle lens 37 Light source drive part 38 Camera drive part 39 Synchronizing part 40 Frame structure 41 Linear guide means 42 Strut 43 Horizontal Material θ Angle of view C Cutting code D Dividing line H (Ha, Hb, Hc) Part pattern L Pattern section P1 to P8 Point mark R Fabric roll S Detection area W Material fabric

Claims (6)

A fabric table that supports the material fabric on which the display object is displayed in an unfolded state;
A cutting head provided above the dough table for cutting the material dough on the dough table;
A head moving mechanism for moving the cutting head up and down, horizontally turning, and horizontally moving;
A detection unit for detecting a display object from the material fabric on the fabric table,
The detector is
A light source that irradiates the material dough with a uniform illuminance across a transverse direction that at least linearly traverses the display object;
A line sensor camera installed so that a plurality of light receiving elements are juxtaposed along the transverse direction at a position where the reflected light from the light source reflected by the material cloth can be received;
A traveling mechanism that integrally travels the light source and the line sensor camera in the same direction and at the same speed;
The fabric cutting device is characterized in that the travel mechanism has a configuration in which the light source and the line sensor camera can detect a display object of the material fabric while traveling .   2. The cloth cutting according to claim 1, wherein the line sensor camera of the detection unit is configured to receive the reflected light as a single angle of view that does not overlap over the entire array of the light receiving elements. apparatus. The light source of the detection unit is formed in a long shape that is disposed in a low-order portion that is close to the material fabric and can irradiate the display material of the material fabric over the entire transverse direction,
The line sensor camera of the detection unit is disposed in a high-order part capable of accommodating the display object of the material fabric within the angle of view in the transverse direction while being separated upward from the light source. The dough cutting apparatus according to claim 1 or 2. The fabric table is provided with a transport mechanism that enables the material fabric on the table to be transported. The transport mechanism is stopped and the material fabric is stopped and supported on the fabric table. The fabric cutting device according to any one of claims 1 to 3, wherein the traveling mechanism is configured to travel the line sensor camera and the light source. The dough table has a cutting zone in which the cutting head is movable by the head moving mechanism, and a detection zone provided adjacent to the cutting zone,
The cloth cutting device according to any one of claims 1 to 4, wherein the detection unit is provided corresponding to the detection zone. 6. The fabric according to claim 5, wherein the fabric table is provided with a transport mechanism for transporting the material fabric with the detection zone as a primary side in the transport direction and the cutting zone as a secondary side in the transport direction. Cutting device.

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