Hem monitoring system

Information

  • Patent Grant
  • 6260495
  • Patent Number
    6,260,495
  • Date Filed
    Wednesday, June 17, 1998
    26 years ago
  • Date Issued
    Tuesday, July 17, 2001
    23 years ago
Abstract
A hem monitoring system for a textile finishing device having one or more sewing heads positioned along a predetermined path for finishing the hem on a textile product in a high speed manner. The monitoring system includes a camera, a monitor, and means for controlling the camera such that an image of the hem is captured and displayed on the monitor so as to inspect the quality of the hem.
Description




TECHNICAL FIELD




The present invention relates to a textile product finishing apparatus and more particularly relates to a hem monitoring device for use with high-speed textile finishing equipment.




BACKGROUND OF THE INVENTION




Traditional textile products, such as bedding sheets and the like, are generally “finished” to produce a quality product. By the term “finished” or “finishing,” we mean that the edges of the sheet are hemmed in a uniform manner. The edges of the sheet are cut, folded, and sewn. The “finishing” is performed either by hand or in an automated process.




Presently, most sheet and other types of textile manufacturing is performed in an automated process due to speed and efficiency. In such an automated process, the quality of the hem is monitored by a worker as the sheet advances through the various cutting and sewing devices. The sheet generally is sewn with the hem “up” to enable the worker to monitor the quality of the hem. By “up,” we mean that the fold and the stitching is visible. A quality hem will have a uniform fold. The stitching will be a uniform distance from the edge of the sheet, will not have any gaps, and will not cause the sheet material to “bunch” together. Most problems with the quality of the hem occur at the beginning and ending corners of the sheet where the respective edges meet.




Modern textile finishing equipment not only hems the sides of the sheet, but also folds and packages the sheet in a high speed operation. The sheet may move through the equipment at speeds of about 800 inches per minute or more. For appearance reasons, however, the sheets are now run through the hemming operations with the hem in the “down” position. After the hemming operations, the sheet often goes directly into the folding apparatus without an opportunity for a worker to inspect the quality of the hem. Because of the speed in which the equipment operates and because the sheet is advanced through the device with the hem down, there is little opportunity for the worker to inspect the quality of the hem. Manufacturers have attempted to solve this inspection problem by positioning workers literally underneath the machine to inspect periodically the hem. This approach is inefficient in that the worker does not have enough time to inspect properly the hem. Further, this position can be awkward or even dangerous for the worker.




What is needed, therefore, is a means to monitor and inspect the quality of the hemming process in a high-speed textile finishing apparatus. These monitoring and inspection means must enable the worker to maintain quality control over the product without placing the worker in a physically awkward or dangerous position.




SUMMARY OF THE INVENTION




The present invention provides a hem monitoring system for a textile finishing device having one or more sewing heads positioned along a predetermined path for finishing the hem on a textile product in a high speed manner. The monitoring system includes a camera, a monitor, and means for controlling the camera such that an image of the hem is captured and displayed on the monitor so as to allow inspection of the quality of the hem.




Specific embodiments include the use of one or more detectors positioned along the predetermined path for detecting the presence of a corner of the textile product as it advances. The means for controlling the camera includes a personal computer with a frame grabber card for capturing an image from the camera. The frame grabber card captures an image of the corner of the sheet from the camera based upon the position of the corner as detected by the detector. The camera is preferably a digital video camera. Alternatively, a strobe may be used to freeze the image of the textile product as it advances. The detectors are preferably photoelectric eyes.




The finishing apparatus as a whole includes means for advancing the textile product along the predetermined path in a high speed manner, means for hemming the edges of the textile product, and means for inspecting the quality of the hems as described above. The means for advancing the textile product includes an unwind stand assembly, a cutting device, a dancer assembly, and a feed pull assembly. The means for hemming the edges of the textile product includes one or more hem assemblies with one or more sewing heads, fold elements, roller arms, and cutting heads. One hem assembly is positioned on a first side of the predetermined path and a second one is positioned on a second side of the predetermined path. One of the hem assemblies is mounted on a gantry for movement in a direction perpendicular to the predetermined path so as to accommodate differently sized sheets. An on/off switch is positioned adjacent to the monitor such that the worker can stop the apparatus to remove an improperly hemmed sheet. Alternatively, the sheet can be flagged for later removal.




The method for inspecting the hem of the present invention includes the steps of advancing the textile product along a predetermined path, folding an edge of the textile product, sewing the edge to form the hem, detecting the position of the textile product along the predetermined path, capturing an image of the hem based upon the detected position, and displaying the image of the hem. The hem is advanced in the down position. The advance of the textile product may be stopped based upon the image of the hem.




Thus, it is an object of the present invention to provide a visual inspection device.




It is a further object of the present invention to provide a visual inspection device for use with a hemming apparatus.




It is a still further object of the present invention to provide a visual inspection device that can capture images of a sheet hem in a high speed hemming apparatus.




It is a still further object of the present invention to provide a visual inspection device that can capture and hold images of the corners of a sheet to inspect hem quality.




Other objectives, features, and advantages of the present invention will become apparent upon reading the following specification, when taken in connection with the drawings and the claims.











BRIEF DESCRIPTION OF THE DRAWINGS





FIG. 1

is a top view of the hemming apparatus of the present invention.





FIG. 2

is a side view of the dancer system of the present invention.





FIG. 3

is a side view of the hemming apparatus of the present invention showing the camera of the visual inspection system.





FIG. 4

is a plan view of a sheet manufactured by the present invention with the size of the fold and the hem exaggerated.





FIG. 5

is a side view of the trap door system of the present invention.




FIG.


6


. is a schematic view of the components of the visual inspection system.





FIG. 7

is a pictorial view of a monitor of the present invention showing the hem in a corner of a sheet.











DETAILED DESCRIPTION OF THE INVENTION




Referring now to the drawings, in which like numerals represent like parts throughout the several views,

FIGS. 1-3

show a hemming apparatus


10


. The hemming apparatus


10


cuts and hems a sheet


20


from a continuous strip


25


of sheet material. The hemming apparatus


10


is known in the industry as “flat sheet”-type machine, in that the sheet


20


remains flat as it advances through the apparatus


10


. The sheet


20


may be made from cotton, a blended cotton/synthetic material, or other types of textile materials. A typical sheet


20


is shown in FIG.


4


. The sheet


20


includes two lateral sides


22


, two transverse sides


24


, a fold


25


on each side


22


,


24


, a hem


26


on each side


22


,


24


, and four corners


28


. The size of the folds


25


and the hems


26


are exaggerated in

FIG. 4

to show their respective positions with respect to the sheet


20


as a whole.




The hemming apparatus


10


operates in an assembly-line fashion along a predetermined path P. The predetermined path P advances adjacent to and along a tabletop


30


. Operation of the various components of the apparatus


10


is set, monitored and controlled by a personal computer


35


, a programmable controller, or other type of conventional control means. The personal computer


35


is preferably a conventional IBM-compatible computer with a microprocessor such as the Pentium® microprocessor sold by Intel Corporation of Santa Clara, Calif.




The hemming apparatus


10


may include an unwind stand assembly


40


positioned along the predetermined path P. As is shown in

FIGS. 1 and 2

, the unwind stand assembly


40


includes one or more rollers


42


, one or more selvage blades


43


, and a dancer system


44


. The rollers


42


are conventional spool-type roller or similar designs suitable for mounting the continuous strip


25


of sheet material. The selvage blade


43


is a conventional cutting blade that trims the edges of the continuous strip


25


to a uniform size. One selvage blade


43


is positioned on either side of the predetermined path P. The selvage blades


43


are powered by conventional means. The dancer system


44


include a plurality of rollers


45


each attached to a dancer arm


46


. The dancer arms


46


are each operated by an air cylinder


47


or other type of conventional device. The vertical advance of the dancer arms


46


, and hence the amount of material pulled off of the rollers


45


is monitored by a plurality of proximity switches


48


. The proximity switches


48


are positioned on either side of each dancer arm


46


and are of conventional design. The dancer system


44


unwinds the continuous strip


25


of sheet material off of the rollers


45


and onto the tabletop


30


under continuous tension. After the continuous strip


25


advances from the dancer system


44


, the edges of the strip


25


are folded over a given length by a fold formation


49


. The fold formation


49


is a rigid bar over which the continuous strip


25


runs to fold over the edges of the strip


25


.




Adjacent to the unwind stand assembly


40


is a first sew station


50


. The first sew station


50


is positioned along the predetermined path P. The first sew station


50


includes a stationary sewing assembly


60


and a moveable sewing assembly


65


positioned on opposite sides of the predetermined path P. The movable sewing assembly


65


is mounted on a gantry


70


for movement in the direction perpendicular to the predetermined path P. The movable sewing assembly


65


is capable of adapting to differently sized sheets


20


, i.e., the movable sewing assembly


65


moves to match the position of the lateral side


22


of the sheet


20


.




The sewing assemblies


60


,


65


trim and sew the lateral edges


22


of the continuous strip


25


of sheet material as the continuous strip


25


advances along the predetermined path P. The sewing assemblies


60


,


65


each include a cutting wheel


75


and a sewing head


80


. The cutting wheel


75


is preferably a round-type cutting wheel with a speed sufficient to match the advance of the continuous strip


25


. Similarly, the sewing head


80


is preferably a chain stitch or overedge-type sewing head capable of speeds of approximately 8000 RPM, such as the Pegasus brand sewing head sold by Pegasus Corporation of Norcross, Ga.




The continuous strip


25


of sheet material is pulled off of the unwind stand assembly


40


and through the first sew station


50


by a second dancer assembly


85


positioned along the predetermined path P. The second dancer assembly


85


includes a plurality of dancer arms


86


and rollers


88


to draw the continuous strip


25


of sheet material through the first sew station


50


under tension to ensure a consistent feed rate. The second dancer assembly


85


is similar in design to the dancer system


44


of the unwind feed assembly


40


. Up to 10 feet of the continuous strip


25


of sheet material can be drawn into the second dancer assembly


85


at one time.




Adjacent to the second dancer apparatus


85


is a cutter device


90


. The cutter device


90


cuts an individual sheet


20


from the continuous strip


25


of sheet material along one of the transverse edges


24


of the sheet


20


. The cutter device


90


is mounted on a gantry


92


along the predetermined path P in the direction perpendicular to the predetermined path P. Alternatively, the cutter device


90


could be mounted within a slot (not shown) within the tabletop


30


. The cutter device


90


is a high speed cutting blade capable of speeds of about 3600 RPM, such as the Wolf brand cutting blade sold by Cutting & Sewing Room Equipment Company of Atlanta, Ga.




Positioned next to the cutter device


90


on the tabletop


30


along the predetermined path P is a feed pull assembly


95


. The feed pull assembly


95


includes one or more feed pull grippers


100


or gripping arms mounted onto a gantry


105


. The gantry


105


moves in the direction of the predetermined path P. The feed pull grippers


100


grab the first transverse edge


24


of the continuous strip


25


of sheet material as it emerges from the dancer assembly


85


. The feed pull grippers


100


and the gantry


105


pull the strip


25


flat on the tabletop


30


such that the cutter device


90


can cut the second transverse edge


24


to form the sheet


20


. The feed pull grippers


100


and the gantry


105


are powered by a servo motor


105


.




Once the sheet


20


has been advanced by the feed pull grippers


100


and cut by the cutter


90


, the predetermined path P turns in a perpendicular direction to finish the transverse edges


24


of the sheet


20


. The sheet


20


is released by the feed pull grippers


100


and advanced along the predetermined path P with one of the lateral edges


22


of the sheet


20


leading. The sheet


20


is advanced along the tabletop


30


by a plurality of belts


105


and a plurality of rollers


107


into a second sew assembly


110


. Alternatively, the sheet


20


may first travel into a trap door assembly


112


. As is shown in

FIG. 5

, trap door assembly


112


is positioned on the predetermined path P along the tabletop


30


. The trap door assembly


112


includes a trap door


114


operated by a hydraulic/pneumatic cylinder


116


. The cylinder


116


raises the trap door


114


such that the sheet


20


is advanced into a lower holding area


118


positioned underneath the tabletop


30


and back out again. The trap door assembly


112


feeds the sheet


20


into the second sew assembly


110


in a controlled manner.




As is shown in

FIG. 3

, the second sew-cutter assembly


110


includes two hem assemblies


120


, a movable hem assembly


122


and a stationary hem assembly


124


. The hem assemblies


122


,


124


are positioned on opposite sides of the predetermined path P along the tabletop


30


. The movable hem assembly


122


is mounted on one or more rails


126


to accommodate differently sized sheets


20


in a manner similar to the moveable sewing assembly


65


. The sheet


20


advances through the second sew-cutter assembly


110


at a speed of about one foot per second.




Each hem assembly


122


,


124


includes a plurality of roller arms


130


and a primary fold element


135


. Because the hem assemblies


122


,


124


are identical, only hem assembly


122


will be described in detail. The rollers arms


130


keep the transverse edge


24


of the sheet


20


in line while the primary fold element


135


forces the edge


24


of the sheet


20


to fold over onto itself to form the fold


25


. The fold


25


is then kept in place by the further roller arms


130


. The roller arms


130


are powered by one or more drive mechanisms


137


.




The second sew-cutter assembly


110


also includes two sew assemblies


140


, movable sew assembly


142


and stationary sew assembly


144


. The sew assemblies


142


,


144


are positioned on opposite sides of the predetermined path P along the tabletop


30


. The movable sew assembly


142


is mounted with the movable hem assembly


122


on the one or more rails


126


to accommodate differently sized sheets


20


.




After the fold


25


is created in the hem assemblies


122


,


124


, the sheet


20


advances into the sewing assemblies


142


,


144


. Because the sew assemblies


142


,


144


are identical, only sew assembly


142


will be described in detail. The sewing assembly


142


includes a sewing head


145


powered by a sewing motor


150


. The sewing head


145


sews along the fold


25


to create the hem


26


. The sewing motor


150


is generally a 1.5 horsepower electrical motor. A Pegasus brand sewing head or similar type sewing head may be employed as is described above with respect to sewing head


80


. Further, more than one type of sewing head


145


may be employed to give the apparatus


10


versatility in accommodating various types of sheets


20


or other types of textile materials.




After the sheet


20


is hemmed, the thread used by the sewing head


145


may be clipped by a clipper device


160


. The clipper device includes a conventional barber shear-type cutting blade or a similar device. The sheet


20


is advanced onto an exit conveyor


170


for folding, wrapping, and shipping operations (not shown).





FIG. 6

shows a schematic view of the components of a hem inspection system


200


. The hem inspection system


200


includes one or more cameras


210


positioned adjacent to the tabletop


30


to monitor the hem


26


of the sheet


20


as it passes along the predetermined path P. The cameras


210


preferably are positioned just under the tabletop


30


between the second sew-cutter assembly


110


and the exit conveyor


160


. This portion of the tabletop


30


includes a window


220


. The window


220


can be made of glass, clear plastic, or other types of transparent materials such that the camera


210


can see therethrough. One camera


210


is positioned on each side of the predetermined path P to view the hem


26


on both transverse edges


24


of the sheet


20


. Located adjacent to each camera


210


is a light source


230


. The light source


230


is a halogen-type lamp or other type of conventional light. The light source


230


illuminates the hem


26


as it advances along the predetermined path P across the window


220


. The light source


230


may be optional depending upon the nature of the camera


210


and the operating conditions of the apparatus


10


as a whole.




The camera


210


preferably is a high speed digital camera such as the digital 8/10 bit linear camera sold under the designation TH78CA13ACC by Thompson TCF of France. This camera


210


has a data rate of up to approximately 40 MHz, an image format of approximately 1024 active pixels, and a line rate of approximately 33,000 lines per second. The camera


210


has approximately a six (6) inch wide field of view. Alternatively, a conventional Peripheral Component Interconnect (“PCI”) based digital camera


210


may be used. An analog camera


210


or other types of video optical devices also may be used.




Operation of the cameras


210


is controlled by the personal computer


35


. The digital input from the cameras


210


is processed in the personal computer


35


by a frame grabber card


240


. The frame grabber card


240


includes imaging boards and software and is the interface between the cameras


210


and the personal computer


35


. A preferred frame grabber card


240


includes that sold by Dipix Imaging Products of Ontario, Canada under the designation LPG-132 Power Grabber™. The frame grabber card


240


has a data rate of up to about 32 Mbytes/Sec. The frame grabber card


240


also can accommodate analog input. The personal computer


35


also may include a data storage device


245


, such as a conventional disk or tape drive, to store the images captured by the frame grabber card


240


.




The visual output of the frame grabber card


240


and the personal computer


35


is shown on a monitor


250


. The monitor


250


may be any type of conventional video monitor with a resolution of at least about 640×480 pixels. Adjacent to the monitor


250


is a control box


260


. The control box


260


operates the apparatus


10


and includes at least an on/off switch


265


to halt operation of the assembly


10


.




Operation of the camera


210


and the frame grabber card


240


may be triggered by one or more detectors


270


. The detectors


270


may be conventional photoelectric eyes or other types of conventional mechanical or electrical sensors. At least one detector


270


is positioned on the tabletop


30


on each side of the predetermined path P between the camera


210


and the second sew-cutter assembly


110


. When the sheet


20


advances along the predetermined path P, the corners


28


of the sheet


20


cover or uncover the detectors


270


. The change of state determined by the detectors


270


informs the personal computer


35


that the corner


28


of the sheet


20


is approaching, such that the frame grabber card


240


is timed to capture that image of the corner


28


from the camera


210


and display that image on the monitor


250


for a given amount of time. Alternatively, the camera


210


could be triggered by an internal feature of the camera


210


itself.




As an alternative to the frame grabber card


240


, the present invention also may employ a strobe light


280


that is either timed or triggered by the detectors


270


to capture an image of the corners


28


of the sheet


20


. The strobe device


280


may be a conventional strobe light timed to freeze momentarily the image of a moving object. The strobe


280


may be used with a continuous video image shown on the monitor


250


. Other types of conventional image processing systems also may be used herein.




In use, the continuous strip


25


of sheet material is drawn off of the unwind stand assembly


40


by the dancer assembly


85


. The continuous strip


25


is pulled along the predetermined path P. The dancer assembly


85


pulls the continuous strip


25


through the first sew station


50


so as to cut, and perhaps fold and hem the lateral edges


22


of the continuous strip


25


. The dancer assembly


85


pulls the continuous strip


25


through the first sew station


50


at a constant rate of advance. The feed pull gripper assembly


95


then pulls the continuous strip


25


out of the dancer assembly


85


and along the predetermined path P until the sheet


20


lays flat on the tabletop


30


. The cutter device


90


then cuts the sheet


20


from the continuous strip


25


along a transverse edge


24


.




The sheet


20


is then advanced into the second sew-cutter assembly


110


to finish the transverse edges


24


of the sheet


20


. The transverse edges


24


are folded in the hem assembly


120


by the plurality of roller arms


130


and the primary fold element


135


to form the fold


25


. The fold


25


is then sewn in the sew assemblies


140


to create the hem


26


.




As the sheet


20


advances through the sew assemblies


140


, the lead corner


28


of the sheet


20


triggers the detectors


270


. The sheet


20


then advances along the tabletop


30


over the window


220


. The camera


210


continually scans the hem


26


of the sheet


20


, particularly at the area of the corners


28


, as the sheet


20


advances. The detector


270


tells the frame grabber card


240


within the personal computer


35


to “grab” or capture the image of the corner


28


. The personal computer


35


then displays the image of the corner


28


on the monitor


250


. The image is held for approximately two to three seconds while the worker visually inspects the quality of the hem


26


. A split screen may be used on the monitor


250


to allow the worker to inspect both corners


28


at one time. As the sheet


20


continues along the tabletop


30


, the trailing corner at


28


passes over the detectors


270


. This change of state also informs the frame grabber card


240


to “grab” that view of the corner


28


as it passes across the window


220


. If the light source


230


is needed, the hem


26


is continually illuminated by the light source


230


as the hem


26


passes over the window


220


. The camera


210


also may scan the sheet


20


as a whole to check for other defects such as holes, spots, print quality, weave defects, or other imperfections that may impact the quality of the sheet


20


.





FIG. 7

shows a monitor


250


with an image of a sheet


20


, particularly a corner


28


such that the worker may inspect the quality of the hem


26


. In the event the worker sees a hem


26


that is defective in any manner, the worker can hit the on/off switch


265


on the control box


260


. The worker may then remove the defective sheet


20


from the assembly


10


. Alternatively, the switch


265


may divert the sheet


20


to a different exit point along the apparatus


10


so as to segregate the defective sheets


20


from the approved sheets


20


or otherwise tag this sheet


20


as being defective. Also alternatively, visual inspection software may be used with the personal computer


35


such that any image of a hem


26


that does not fall within predefined parameters will automatically stop the apparatus


10


or at least flag that particular sheet


20


for later inspection or removal. The captured images of the hems


26


may be maintained by the personal computer


35


or transferred to the storage device


245


for long-term storage. The images may be maintained for quality control or inventory purposes.




Although the finishing apparatus


10


has been described herein in great detail, any type of conventional finishing apparatus


10


may be used with the hem inspection system


200


of the present invention. For example, a high speed finishing device is sold by Texpa-Arbter of Germany. The hem inspection system


200


herein may be incorporated into such a device or any other type of conventional, high speed textile finishing device where hem quality is essential.




From the foregoing description of the preferred embodiment and the several alternatives, other alternative constructions of the present invention may suggest themselves to those skilled in the art. The scope of the present invention, therefore, is to be limited only by the claims below and equivalents thereof.



Claims
  • 1. A hem monitoring system for a textile finishing device, said textile finishing device having one or more sewing heads positioned along a predetermined path for finishing a hem on a textile product in a high-speed advancement manner, said monitoring system comprising:a camera adapted to be positioned along said predetermined path; a monitor adapted to be positioned adjacent to said device; and means for controlling said camera such that an image of said hem is captured during said high-speed advancement manner and displayed on said monitor so as to allow the inspection of the quality of said hem, said means for controlling said camera comprising a personal computer and a frame grabber card.
  • 2. The hem monitoring system of claim 1, wherein said means for controlling said camera comprises one or more detectors positioned along said predetermined path.
  • 3. The hem monitoring system of claim 2, wherein said one or more detectors comprise photoelectric eyes.
  • 4. The hem monitoring system of claim 1, wherein said camera comprises a digital video camera.
  • 5. A hem monitoring system for a textile finishing device, said textile finishing device having one or more sewing heads positioned along a predetermined path for finishing a hem on a textile product in a high-speed advancement manner, said monitoring system comprising:a camera adapted to be positioned along said predetermined path; a monitor adapted to be positioned adjacent to said device; and a personal computer with a frame grabber card for controlling said camera such that an image of said hem is captured during said high-speed advancement manner and displayed on said monitor so as to allow the inspection of the quality of said hem.
  • 6. The hem monitoring system of claim 5, further comprising one or more detectors adapted to be positioned along said predetermined path for detecting the presence of a corner of said textile product along said predetermined path.
  • 7. An apparatus for finishing a textile product, comprising:means for advancing said textile product along a predetermined path in a high-speed manner; means for hemming the edges of said textile product disposed along said predetermined path; and camera means for enabling the inspection of the quality of the hems on said textile product disposed along said predetermined path.
  • 8. The apparatus for finishing a textile product of claim 7, wherein said means for advancing said textile product comprises an unwind stand assembly for loading a continuous strip of a plurality of said textile products and advancing said continuous strip along said predetermined path.
  • 9. The apparatus for finishing a textile product of claim 8, further comprising means for cutting said textile product from said continuous strip positioned along said predetermined path.
  • 10. The apparatus for finishing a textile product of claim 7, wherein said means for advancing said textile product comprises a dancer assembly positioned along said predetermined path.
  • 11. The apparatus for finishing a textile product of claim 7, wherein said means for advancing said textile product comprises a feed pull assembly positioned along said predetermined path.
  • 12. The apparatus for finishing a textile product of claim 7, wherein said means for hemming the edges of said textile product comprises one or more hem assemblies.
  • 13. The apparatus for finishing a textile product of claim 12, wherein said hem assemblies comprise one or more sewing heads.
  • 14. The apparatus for finishing a textile product of claim 12, wherein said hem assemblies comprise one or more fold elements.
  • 15. The apparatus for finishing a textile product of claim 12, wherein said hem assemblies comprise one or more roller arms.
  • 16. The apparatus for finishing a textile product of claim 12, wherein said hem assemblies comprise one or more cutting heads.
  • 17. The apparatus for finishing a textile product of claim 12, wherein a first one of said one or more hem assemblies is positioned on a first side of said predetermined path.
  • 18. The apparatus for finishing a textile product of claim 17, wherein a second one of said one or more hem assemblies is positioned on a second side of said predetermined path.
  • 19. The apparatus for finishing a textile product of claim 17, wherein said first one of said one or more hem assemblies comprises a rail positioned in a direction perpendicular to said predetermined path for movement of said hem assembly thereon.
  • 20. The apparatus for finishing a textile product of claim 7, wherein said camera means for enabling the inspection of the quality of the hems on said textile product comprises a camera positioned underneath said predetermined path.
  • 21. The apparatus for finishing a textile product of claim 20, wherein said camera means for enabling the inspection of the quality of the hems on said textile product comprises a monitor positioned adjacent to said apparatus.
  • 22. The apparatus for finishing a textile product of claim 21, wherein said camera means for enabling the inspection of the quality of the hems on said textile product comprises means for controlling said camera such that an image of said hem is captured and displayed on said monitor so as to enable the inspection of the quality of said hem.
  • 23. The apparatus for finishing a textile product of claim 22, wherein said means for controlling said camera comprises a personal computer.
  • 24. The apparatus for finishing a textile product of claim 23, wherein said means for controlling said camera comprises a frame grabber card.
  • 25. The apparatus for finishing a textile product of claim 22, wherein said means for controlling said camera comprises one or more detectors positioned along said predetermined path.
  • 26. The apparatus for finishing a textile product of claim 25, wherein said detectors comprise photoelectric eyes.
  • 27. The apparatus for finishing a textile product of claim 21, further comprising an on/off switch positioned adjacent to said monitor.
  • 28. A method for inspecting the hem on a textile product, comprising the steps of:detecting the position of said textile product along a predetermined path; capturing an image of said hem on said textile product based upon the detected position of said textile product along said predetermined path; and displaying said image of said hem.
  • 29. The method of claim 28, further comprising the step of advancing said textile product along said predetermined path with said hem in a down position.
  • 30. The method of claim 29, further comprising the step of stopping the advance of said textile product along said predetermined path based upon the image of said hem.
  • 31. The method of claim 28, wherein said displaying step comprises processing said image.
  • 32. A method of finishing the hem on a textile product, comprising the steps of:advancing said textile product along a predetermined path; folding an edge of said textile product; sewing said edge of said textile product to form said hem; detecting the position of said textile product as it advances along said predetermined path; and and inspecting said hem via a camera system based upon the detected position of said textile product along said predetermined path.
  • 33. A method for the inspection of hem quality for a textile product in a high speed textile finishing apparatus having one or more sewing heads positioned adjacent to a predetermined path, comprising the steps of:advancing said textile product through said one or more sewing heads to produce a hem; triggering an optical device to capture an image of said hem as it advances along said predetermined path; and inspecting said image of said hem.
  • 34. The method of claim 33, further comprising the step of stopping said apparatus if said hem is not properly finished.
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