CN110161050B

CN110161050B - Cloth spreading method and cloth spreading system

Info

Publication number: CN110161050B
Application number: CN201910114376.8A
Authority: CN
Inventors: 有北礼治; 滨一成
Original assignee: Shima Seiki Mfg Ltd
Current assignee: Shima Seiki Mfg Ltd
Priority date: 2018-02-15
Filing date: 2019-02-14
Publication date: 2022-02-15
Anticipated expiration: 2039-02-14
Also published as: CN110161050A; JP7048342B2; JP2019136851A

Abstract

The invention provides a cloth spreading method and a cloth spreading system. The sheet is paid out on a draw table by a draw device, and a flaw mark on the sheet is detected by a sensor. When the sensor detects the flaw mark, the projector projects the arrangement of the parts onto the sheet, and the operator can compare the arrangement of the parts with the position of the flaw. The method includes receiving an input of an operator regarding a defect process when the defect is required to affect a garment piece, and executing the defect process by the cloth spreading system according to the input of the operator. Since it is possible to easily identify whether the defect is inside or outside the garment, unnecessary defect processing is not performed.

Description

Cloth spreading method and cloth spreading system

Technical Field

The invention relates to a cloth spreading method and a cloth spreading system, in particular to flaw detection.

Background

When the sheet is pulled up, if there is a flaw in the sheet, a defective garment piece is produced. Therefore, the garment pieces are supplemented by overlapping the pull-ups (patent document 1). In the overlapping draw, the draw is stopped in the vicinity of the flaw, and the sheet is cut. Then, the cut pieces are returned to the position on the upstream side of the defective part, and new sheets are stacked. Thus, the defective parts are compensated.

The related prior art is shown below. As a process for detecting a defect, a technique other than the double-lapping process is known. Patent document 2 proposes the following: in order to compensate for defective parts, for example, 1 sheet is stretched (additionally marked) by the length of the defective part. In addition, a technique of projecting a cut pattern from a projector onto a sheet is known. For example, patent document 3 proposes the following: and (4) cutting the fabric after the fabric stretches in a mode that the projected cutting pattern is matched with the pattern of the fabric.

[ Prior Art document ]

[ patent document ]

[ patent document 1 ] Japanese patent laid-open No. Hei 02-169760

[ patent document 2 ] Japanese patent laid-open No. 2017-104957

[ patent document 3 ] Japanese patent laid-open No. 2013-240838

Disclosure of Invention

It is preferable to automatically detect a flaw of a sheet by a camera and image recognition, but it is difficult to automatically determine the degree, size, and the like of the flaw. Therefore, a flaw mark such as a label, a tape, a floating label, or the like is currently attached to the edge of the sheet or the vicinity of the flaw. The approximate position of the defect can be identified by the defect mark, but it is unclear whether the defect is inside the garment or in the gap between the garment and the garment. Further, when the flaw is located outside the garment piece, the flaw processing is not necessary. However, in the conventional cloth-spreading method, if a defect mark is present, defect processing is performed.

The invention provides a cloth spreading method, which can eliminate unnecessary flaw processing by judging whether a flaw affects a garment piece by an operator without detecting the flaw by a sensor.

The cloth spreading method of the invention comprises the steps of feeding a sheet on a cloth spreading table by a cloth spreading device, and detecting a flaw mark on the sheet by a sensor,

at least when the sensor detects the flaw mark, the arrangement of the parts is projected from the projector to the sheet, so that the operator can compare the arrangement of the parts with the position of the flaw,

receiving an input from an operator regarding a defect process when a defect is required to affect a garment piece,

flaw processing is performed by the tenter system in accordance with operator input.

The invention provides a cloth spreading system which feeds a sheet on a cloth spreading table by a cloth spreading device and detects a flaw mark on the sheet by a sensor, the cloth spreading system comprising:

a projector for projecting the arrangement of the parts from the projector onto the sheet when at least the sensor detects the flaw mark, so that the operator can compare the arrangement of the parts with the position of the flaw; and

a unit for receiving the input of the operator related to the flaw processing when the flaw affects the garment piece,

Although it is difficult to detect the defect itself by the sensor, the operator can visually confirm the defect. Further, since the arrangement of the parts is projected onto the sheet, it is possible to compare the positions of the flaws with the arrangement of the parts, and to identify whether or not flaw processing (processing when flaws affect the parts) is necessary. Therefore, unnecessary defective processing is not performed. The projector may project the placement of the parts at ordinary times or may project the placement only at the time of detecting the flaws.

Preferably, when the defect mark is detected, the cloth spreading device stops the feeding of the sheet or reduces the feeding speed. In this way, even when the speed of feeding out the sheet is high, the operator can reliably input whether the defect is inside or outside the garment.

Preferably, the plurality of sheets are stacked on the tenter table by the tenter, and the projector is moved up and down or the arrangement of the parts projected from the projector is enlarged or reduced according to the stacking height of the sheets, and the arrangement of the parts is projected at the same position in the same size and the same position regardless of the stacking height of the sheets. In this way, even if the number of stacked parts is changed, the parts can be projected at the same position and the same size, and therefore the operator can easily determine whether the defect is inside or outside the part.

Preferably, the controller extracts a part that is likely to contain a flaw from the position of the flaw mark, and the projector projects the arrangement of the parts so as to distinguish the part that is likely to contain a flaw from other parts. In this way, the operator can easily know the parts to be searched for defects.

Preferably, the draw system executes the flaw processing when the position of the flaw is not input for a predetermined time after the flaw mark is detected. In this way, the pull-up does not stop if the operator does not input whether the defect is inside or outside the garment piece.

Preferably, a plurality of sheets are stacked on a draw table by the draw device, the sheet stack is cut for each cut piece after the defect is processed, the cut piece stack is conveyed to a sorting table, and the sheet stack on the sorting table is projected from the second projector so as to specify the cut piece stack including the cut piece to be removed. In addition to the pieces having flaws, in the overlapping draw, incomplete pieces lacking the front or rear part of the piece are generated. These defective tablets need to be removed. Therefore, if the piece stack body on the sorting table is projected from the second projector so as to specify the piece stack body including the pieces to be removed, the defective pieces can be reliably removed. The defective parts and the incomplete parts having defects are collectively referred to as "defective parts".

Further, it is preferable that the sheet is separately fed and cut, for example, by 1 sheet, in order to compensate for a defective part without performing overlapping. In this case, incomplete tablets are not produced in the laminated sheet, but normal tablets are insufficient. Therefore, the operator is notified of the existence of the additionally cut part by projecting from the second projector so as to specify the laminate including the defective part.

In particular, it is preferable that defective parts existing in several parts of the part laminate are projected from the second projector. Since the number of the second cut pieces is removed, the defective cut pieces can be extracted more easily.

Drawings

FIG. 1 is a side view with partial cutaway showing a pull-up system of an embodiment.

Fig. 2 is a block diagram showing a control system of the tarpaulin system of the embodiment.

Fig. 3 is a diagram schematically showing a pattern projected from a projector onto a sheet when a defect mark is detected.

Fig. 4 is a diagram schematically showing an input screen of an operator.

Fig. 5 is a view schematically showing an example in which the sheet is rewound and released again so that the flaws are separated from the chassis.

Fig. 6 is a view schematically showing an example in which a panel is stretched 1 to compensate for a panel including a defect.

Fig. 7 is a diagram schematically showing a pattern projected onto the sheet stack during picking.

Fig. 8 is a flowchart showing a process at the time of tentering in the embodiment.

Fig. 9 is a flowchart showing a process at the time of sorting in the embodiment.

[ Mark Specification ]

1 spreading system

2 spreading device

4 spreading workbench

5 spreading head

6 trolley

7 rolled cloth

8 laminated body

9 controller

10 monitor

12-walking motor

13 sheet material

14 pay-off roller

15 conveyer

16 flaw sensor

18 cutter unit

20 projector

21 lifting mechanism

22 Portable terminal

23 pointer device

25 walking driver

26 pay-out actuator

28 CPU

30 memory

32 communication interface

40 cutting device

42 picking workbench

44 projector

50 flaw mark

51 flaw

52 line

54 vernier

56-piece laminate

Detailed Description

The following shows preferred embodiments for carrying out the invention.

[ examples ] A method for producing a compound

Fig. 1 to 9 show an embodiment and its modifications. Fig. 1 shows a tenter system 1 of an embodiment, in which a cutting device 40 and a picking table 42 are provided on the downstream side of a tenter device 2. The tenter table 4 includes a conveyor, not shown, and carries the sheet stack 8 out to the cutting device 40. The cutting device 40 and the picking table 42 may not be provided.

The cloth spreading head 5 reciprocates on the cloth spreading table 4. The cloth spreading head 5 includes a carriage 6 on which a roll cloth 7 is placed, and is operated under the control of a controller 9 to display various information on a monitor 10. The monitor 10 displays the arrangement of the parts on the sheet, and the operator can input whether the defect is in the part or out of the part through the monitor 10 and the like by an appropriate pointing device.

Reference numeral 12 denotes a traveling motor of the carriage 6. The sheet 13 is discharged from the winding cloth 7 by the discharge roller 14 and conveyed by the conveyor 15. The sheet 13 has defects such as yarn running, color unevenness, and sagging, and a defect mark such as a tape, a label, or a floating label with adhesive is attached to the edge of the sheet where the defect exists. The flaw indications are monitored by a flaw sensor 16 such as a camera, height sensor, photoelectric sensor, or the like. The height sensor and the photoelectric sensor detect the label by using the fact that the label is at a position higher than the sheet 13.

The cloth spreading head 5 includes a cutter unit 18, and the cutter unit 18 reciprocates in a direction perpendicular to the cloth spreading direction of the sheet 13 and cuts the sheet 13 each time it reaches the end of the laminated body 8. The cloth stretching direction (the direction in which the sheet 13 is fed onto the cloth stretching table 8) is, for example, a direction from left to right in fig. 1.

The arrangement of the parts with respect to the stacked body 8 of the sheet 13 is determined by the marking data (cutting data). The projector 20 projects the arrangement of the parts onto the surface of the layered body 8 at normal times or at the time of detection of flaws. The projector 20 may project the parts by changing the color, the type of the contour line, the presence or absence of the hatching, and the like so that the parts that may include the flaws can be distinguished from other parts. The projector 20 projects from, for example, the front upper portion of the stacked body 8. The elevation mechanism 21 elevates the projector 20 in accordance with the stacking height of the stack 8, and keeps a difference in height from the projector 20 to the surface of the stack 8 constant. The stacking height is preferably measured by providing a height sensor, not shown, in the cloth spreading head 5, but may be converted into the number of stacked layers of the stacked body 8. Thus, even if the number of stacked layers is changed, the arrangement of the parts can be projected at the same position and the same size. Note that, even if the arrangement of the projected parts is enlarged or reduced in accordance with the height of the stacked body 8 instead of the lifting mechanism 21, the arrangement of the parts can be projected at the same position and the same size.

Since it is inconvenient for the operator to return to the monitor 10 and input while the cloth is being pulled, the operator can input whether the defect is inside or outside the garment from the portable terminal 22. The input includes at least whether the flaw is inside or outside the panel, and preferably in addition to that, the position of the flaw along the draw direction is specified. In addition, it is preferable to specify which part is inside when the flaw is inside the part. The position of the flaw may be input so as to specify both a position along the cloth stretching direction (x-direction position) and a position along a direction perpendicular thereto (y-direction position). The operator can input the position of the defect, the length to move the sheet 13 to avoid the defect, and the like by using the monitor 10, the portable terminal 22, or the surface of the laminated body 8 (the surface of the sheet 13) by dragging a cursor, a line, and the like with the pointer device 23. When a cursor, a line, or the like is displayed on the surface of the sheet 13, the cursor, the line, or the like is projected from the projector 20. When the monitor 10 or the mobile terminal 22 includes a touch panel, the position of a defect or the like can be directly input on the screen.

The cutting device 40 cuts the laminate 8 in accordance with the marking data by covering the laminate 8 with an airtight transparent sheet such as vinyl chloride and fixing the airtight transparent sheet to the cutting table by suction. The cut stacked body 8 is carried out to the picking table 42 by a conveyor not shown. Further, it is preferable that a second projector 44 is provided near the sorting table 42 to display which of the parts of the part stack has an incomplete part in the second few.

Fig. 2 shows a control system of the tenter system 2, and the traveling driver 25 controls the traveling motor 12, and the discharge driver 26 controls the discharge roller 14 and the conveyor 15. The flaw sensor 16 detects a flaw mark of the sheet 13. The cutter unit 18 cuts the sheet 13, and the monitor 10 displays various information related to the tenter and receives an input from the operator. The portable terminal 22 and the pointing device 23 are provided to facilitate input by the operator, but these may not be provided when the monitor 10 includes another input means such as a touch panel. The controller 9 includes a CPU28 and a memory 30, stores the mark data, and causes the tenter device 2 to execute the defect processing when the defect is in the garment.

The communication interface 32 communicates with the cutting device 40 and the picking station 42. The second projector 44 on the sorting table 42 side projects the placement of the parts onto the surface of the laminate 8, and particularly projects the placement of the parts so as to specify a part laminate including a defective part. Data on which chassis a defect exists is sent to the picking station 42 via the communication interface 32.

Fig. 3 shows a state in which a defect mark 50 on the sheet 13 is detected by a sensor, and 51 is a defect. From the position of the defect mark 50 and the mark data, it is known that the possibility that any one of the parts P1-P3 includes the defect 51 is high, but the exact position of the defect 51 is not clear. Therefore, the arrangement of the parts is projected onto the sheet 13 from the projector 20, and the parts P1-P3 which may include flaws are distinguished from other parts and projected particularly by the presence or absence of color, light and shade, and hatching. When the cloth spreading head 5 stops, the discharge of the sheet 13 is stopped. The position in the cloth stretching direction is x, and the position in the direction perpendicular thereto is y.

Fig. 4 shows a screen of the mobile terminal 22, the monitor 10, and the like in the situation of fig. 3. The arrangement of the parts is displayed on the screen, and when the flaw is in the part, the "NO" button at the lower right is clicked, and when the flaw is outside the part, the "OK" button is clicked.

Preferably, the cursor 54 or the like is operated to input which part the flaw 51 is located in. When the x-direction position of the flaw 51 is input, for example, the line 52 is displayed on the screen, and the line 52 is dragged by the pointing device 23 or the like to move to the visual position of the flaw 51. When the x-direction position and the y-direction position of the defect 51 are input, for example, the cursor 54 is dragged and clicked at a position overlapping the defect 51. When the presence of the part having the flaw 51 is found and the position side of the flaw 51 in the x direction is found, it can be found how much the sheet 13 is moved in the tenter direction, and the flaw 51 can be arranged between the parts. When the x-direction position and the y-direction position of the flaw 51 are input, it can be seen that the flaw 51 can be disposed between the parts if the sheet 13 is moved by a small amount. It is also possible to minimize the length of the sheet material when the cloths are overlapped, as well as to determine the length of the movement. If the parts having the flaws 51 can be identified, instead of performing the overlapping-drawing, it is possible to perform a process of drawing the pieces corresponding to the parts having the flaws 51 separately. The movement amount and the length of the lapping cloth may be directly input by the operator, in addition to being automatically obtained. For example, when the input is made by matching the position of the flaw with the line 52 or the like, the line 52 or the like can be moved to a target position where the flaw is desired to be moved, and the movement amount can be set. Similarly, the range of the overlapping draw can be designated by using the line 52 or the like.

In the case where the defect is in the garment piece, the defect processing is performed. The flaw processing is, for example, a known double-pull cloth, and may be a processing (fig. 5) of moving the flaw 51 to the outside of the garment by moving the position of the release sheet 13, an additional mark (fig. 6) of patent document 2, or the like.

In the flaw processing of fig. 5, the sheet 13 is once rewound and released again, whereby the flaws 51 are moved to the outside of the garment P2. For example, using the line 52 in fig. 4, the flaw 51 can be moved to the outside of the garment by inputting how much it is moved to the upstream side in the cloth stretching direction. Alternatively, in fig. 4, the input defect 51 is located in the part P2 and at a distance from the upstream end of the part P2 in the cloth pulling direction. Therefore, in response to these inputs, the position at which the feeding of the sheet 13 is started is moved to the upstream side in the cloth feeding direction with reference to the cloth feeding table 4. In this way, the flaw 51 is moved to the outside of the part P2.

In the defect processing of fig. 6, additional marking is performed. When a flaw 51 is input to the part P2 on the screen of fig. 4, the sheet 13 is added to take out 1 part P2, and the cut is performed by tentering. If there are a plurality of defective parts, the sheet 13 is pulled and cut so as to compensate for all of them.

Fig. 7 shows a projection pattern from the second projector 44 to the stacked body 8 on the picking table 42. For example, a defective part is formed in the 4 th part counted from the upper part of the part stack body 56, and the parts are compensated for by the additionally marked parts in fig. 6. Therefore, it is preferable to display the presence of a defect in the second part (the 4 th part from the top in fig. 7) by projecting the part laminate 56 including the defective part separately from the other part laminates.

When the double-lapping is performed as the flaw treatment, the release of the sheet is stopped in the middle of the laminated body 8 except for the cut pieces including the flaws, and the release of the sheet is restarted from the middle, so that incomplete cut pieces are generated. When the position at which the sheet is cut and the position at which the release of the sheet is resumed are found, the incomplete part can be specified. Therefore, in the case of performing the overlapping gusset, it is preferable to display the panel laminate including the incomplete panel in a manner distinguished from the normal panel laminate in the display of fig. 7, and it is particularly preferable to display the incomplete panel in the second few panels in addition.

In order to assist the extraction of defective parts on the sorting table 42, labels including a display of the few defective parts may be attached to the part stack including the defective parts, in addition to the projector 44. For example, a labeler is provided in the cloth spreading head 5, and a label is attached to the uppermost sheet of the stack 8.

Fig. 8 shows a tabbing algorithm, and fig. 9 shows a projection algorithm at the time of sorting. The processing shown in fig. 3 to 7 will be briefly described. When the defect mark is detected in step S1 of fig. 8, the feeding of the sheet is temporarily stopped or made slow (step S2). At this time, the arrangement of the parts is projected onto the sheet 13 from the projector 20, and the parts that may include flaws are projected so as to be distinguishable from other parts (steps S3, S4). By raising and lowering the projector 20 or expanding and reducing the arrangement of the parts according to the height of the stack 8, the parts are projected at the same position and the same size, regardless of the number of stacked parts of the stack 8. When a flaw is present in the outer shape line or the hem of the garment piece and the flaw does not reach the interior of the garment piece, the flaw can be ignored. Since the hem has a width, it is preferably projected so as to also include the width of the hem.

Then, whether the flaw affects the input of the part, that is, whether the flaw processing is necessary is determined (step S5). When the flaw affects the part, it is preferable to input the x-direction position of the flaw (step S6), the y-direction position (step S7), the movement amount for moving the flaw out of the part, and the like. Thus, it is possible to input which garment needs the defect processing or how much the sheet is moved to the upstream side in the draw direction, and to move the defect to the outside of the garment.

If the input by the operator is completed or if it is not input within a predetermined time that the defect is in the garment, the defect processing is executed (step S8). The predetermined time is set to, for example, 1 minute to 10 minutes, preferably 2 minutes to 5 minutes. In fig. 8, the double-lapping scrim is shown as a defective process, but the defective process (movement of the sheet) in fig. 5 or the defective process (additional marking) in fig. 6 may be used. When the flaw processing is finished, the sheet feeding is resumed (step S9).

A plurality of defect processes can be used, and a controller may determine which defect process to use based on the position of the defect. For example, when the sheet is moved to avoid the flaws according to the positions of the flaws with respect to the parts, the movement of the sheet shown in fig. 5 is used, and when the amount of movement required to avoid the flaws is large or difficult to avoid, either the overlapping of the draw and the additional marking is performed. In addition, as to which of the double-draw and the additional mark is used, conditions to be prioritized, such as a waste area of the sheet and a time required for the flaw processing, may be determined, and the one with the smallest condition may be automatically selected, or any one of them may be selected and set in advance by an operator. Alternatively, the defect processing method may be automatically determined to be optimal by performing the shift processing.

Fig. 9 shows the process at the time of picking, and the stacked body 8 is carried into the picking table by the conveyor (step S11). Then, the projection is performed on the part laminate including the defective parts, and the presence of the defective part in the second few parts is also displayed (step S12).

Claims

1. A cloth spreading method in which a sheet is paid out on a cloth spreading table by a cloth spreading device and a flaw mark on the sheet is detected by a sensor,

performing defect processing through the cloth spreading system according to the input of an operator,

a plurality of sheets are stacked on the cloth spreading worktable through the cloth spreading device,

then, the sheet laminate is cut for each cut piece after the defect processing, and then is transported to a sorting table,

then, the sheet stack on the sorting table is projected from the second projector so as to specify the sheet stack including the parts to be removed.

2. A method of napping as defined in claim 1,

when the defect mark is detected, the cloth spreading device stops the feeding of the sheet or reduces the feeding speed.

3. A method of napping as defined in claim 1,

the projector is moved up and down according to the stacking height of the sheets, or the arrangement of the parts projected from the projector is enlarged or reduced, and the arrangement of the parts is projected at the same position with the same size regardless of the stacking height of the sheets.

4. A napping method as defined in claim 2,

5. A wiredrawing method according to any of claims 1 to 4,

extracting, by the controller, a cut piece that may contain a flaw from a position of the flaw mark,

the projector projects the placement of the parts so as to distinguish parts that may include flaws from other parts.

6. A wiredrawing method according to any of claims 1 to 4,

when the position of the defect is not input for a predetermined time after the defect mark is detected, the cloth spreading system executes the defect processing.

7. A tarpaulin method according to claim 5,

8. A method of napping as defined in claim 1,

a defective part in the second part of the part stack is projected from a second projector.

9. A tenter system that pays out a sheet on a tenter table by a tenter device and detects a flaw mark on the sheet by a sensor, comprising: