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21. 发明专利

JPH08155178A BOBBIN THREAD WINDING DEVICE OF SEWING MACHINE 失效
公开(公告)号：JPH08155178A
公开(公告)日：1996-06-18
申请号：JP33063694
申请日：1994-12-07
申请人： JUKI KK
发明人： TOMIOKA HIROYUKI , KATAYAMA KAZUNORI
IPC分类号： D05B59/00
摘要： PURPOSE: To maintain the quality of stitch and suppress the costs without modifying the construction of a bobbin and/or bobbin case substantially by generating a stitch of good workmanship without leaving the thread end at starting of winding to outside the bobbin case after the winding is finished, and nullifying the risk of occurrence of the needle thread to be severed. CONSTITUTION: A bobbin 7 is separated from a bobbin case of conventional construction using a bobbin separating/coupling means, and a bobbin thread 150 is clamped by thread clamping means 103, 105, 110, and in this condition, a rotor 306a is rotated so that the clamped bobbin thread 150 is entangled with the bobbin 7 which is separated from the bobbin case. Then the take-up shaft 107 is rotated, and the bobbin thread 150 is wound on the bobbin 7 while the clamped bobbin thread 150 is released, and even if the bobbin 7 is accommodated in the bobbin case after winding of bobbin thread, there is no risk that the thread end at starting of winding is left outside the bobbin case.

22. 发明专利

JPH0768071A BOBBIN THREAD AUTOMATICALLY FEEDING DEVICE 失效
公开(公告)号：JPH0768071A
公开(公告)日：1995-03-14
申请号：JP23919493
申请日：1993-08-31
申请人： JUKI KK
发明人： NAKAMURA MASAO , GOTO SUMIO , TOMIOKA HIROYUKI , MORI TAKAYOSHI , IWASAKI NOZOMI
IPC分类号： D05B59/00 , D05B59/04
摘要： PURPOSE:To reduce the residual quantity of a bobbin thread, and prevent a mutual interference with a sewing machine at the time of replacement of a bobbin from generating by a method wherein a bobbin thread winding quantity being required for a bobbin is previously operated conforming to a sewing condition, and a bobbin thread-winding means is operated until the quantity of a wound thread roughly meets the operated bobbin thread winding quantity. CONSTITUTION:A bobbin thread winding quantity control means 80a of a CPU 80 previously operates a bobbin thread winding quantity required for a bobbin, conforming to a sewing condition. That is, how many sheets of fabrics are sewn is read from a sewing number of times-input SW 71, and the length of a required bobbin thread is read from a thread length L input SW 70. In addition, a thread kind and thread number are read from a thread kind input SW 69 and thread number input SW 68, and the winding quantity of a bobbin thread required for the sewing is operated. Then, the bobbin thread is wound on a bobbin by operating a winding motor MC until the wound quantity of the bobbin thread roughly meets the operated bobbin thread winding quantity. A bobbin replacement control means 80b obtains a residual quantity of the bobbin thread by a beaming quantity of the bobbin in a shuttle and a bobbin thread consuming quantity when receiving a sewing machine finish signal, and if the residual quantity of the bobbin thread does not satisfy a required quantity for the next sewing, the sewing is stopped, and a replacement of the bobbin is indicated.

23. 发明专利

JPH0731778A BOBBIN THREAD WINDING-ROUND DEVICE 失效
公开(公告)号：JPH0731778A
公开(公告)日：1995-02-03
申请号：JP20361193
申请日：1993-07-26
申请人： JUKI KK
发明人： TOMIOKA HIROYUKI , MORI TAKAYOSHI , GOTO SUMIO
IPC分类号： D05B59/00 , D05B59/04
摘要： PURPOSE:To constitute the device so that a bobbin thread can be wound round a bobbin case and a bobbin which are used usually. CONSTITUTION:This device consists of a bobbin clutch 7 which inserts and holds a thread Y delivered to a prescribed position between the clutch and a bobbin and rotates the bobbin, and also, is energized to the bobbin side, a fixed knife 8, a loop spreading 9 with a dynamic knife for guiding a coiled thread Y extended from an opening part of a bobbin case 2 to a bobbin thread tension spring groove of the bobbin case 2, and also, cutting the coiled thread Y in cooperation with the fixed knife 8, and a thread presser 22 for pushing the thread guided to the bobbin thread tension spring groove under a bobbin thread tension spring of the bobbin case 2.

24. 发明专利

JPH0731777A BOBBIN THREAD WINDING-ROUND DEVICE AND BOBBIN 失效
公开(公告)号：JPH0731777A
公开(公告)日：1995-02-03
申请号：JP20040693
申请日：1993-07-19
申请人： JUKI KK
发明人： TOMIOKA HIROYUKI
IPC分类号： D05B59/00
摘要： PURPOSE:To simplify the structure of the bobbin thread winding-round device in order to enhance the reliability of a sewing machine and to reduce its cost by providing a bobbin clutch for inserting and holding a thread delivered to a prescribed position between the clutch and an advancing bobbin, and also, rotating the bobbin, and providing a hook for guiding a thread end of a winding start to a slit of a flange. CONSTITUTION:On the flange surface of one side of a bobbin, a slit 4 is provided, and the slit 4 is extended radially from the center of the bobbin and bent in an L-shape on the way. Also, this device is provided with a hook 5 for bending and raising the tip of an edge part of the outside constituting the L-shape slit 4 in the rotational direction, and guiding a bobbin thread into the bobbin. When a bobbin case 2 and an electromagnet attracting head move to an advance position, a bobbin thread Y delivered between a thread clamp spring 10 and a thread guide 11 is inserted and held between the bobbin and a bobbin clutch 7, and also, the bobbin and the bobbin clutch 7 are engaged frictionally. Thereafter, a motor 6 rotates, and when the bobbin rotates through the bobbin clutch 7, the bobbin thread Y is caught by the hook 5 of the bobbin.

25. 发明专利

JPH06272A BOBBIN THREAD CUTTING DEVICE FOR BOBBIN THREAD AUTOMATIC FEEDER 失效
公开(公告)号：JPH06272A
公开(公告)日：1994-01-11
申请号：JP18868892
申请日：1992-06-22
申请人： JUKI KK
发明人： TOMIOKA HIROYUKI
IPC分类号： D05B59/00
摘要： PURPOSE:To provide a bobbin thread cutting device capable of making a bobbin thread automatic feeder compact, hooking a bobbin thread on the bobbin thread tension spring of a bobbin case after the bobbin thread is wound and cut, and securing the necessary extraction length of the bobbin thread. CONSTITUTION:A bobbin thread cutting device is constituted of a fixed knife 8, a loop spreading 9 formed with a V-shaped notch section at the tip, overlapped at a small gap with a thread dividing blade having an edge moving a thread handling area to a moving knife plate cutting a thread in cooperation with the fixed knife 8, and rotated around a bobbin case 2 located at the bobbin thread winding position and incorporating a bobbin, an integrated thread end clamp spring 10 interlockingly retreated from the bobbin during its rotation, and a thread guide.

26. 发明专利

JPH04174705A METHOD FOR MATCHING COLOR OF FABRIC 失效
公开(公告)号：JPH04174705A
公开(公告)日：1992-06-22
申请号：JP29476590
申请日：1990-10-31
申请人： JUKI KK
发明人： TOMIOKA HIROYUKI , TSUJI TOSHIO , KONDO KATSUHISA , ARASHI SOTONARI
IPC分类号： A41H43/00 , G06T1/00
摘要： PURPOSE:To accurately carry out matching of color by obtaining each range width on each background color different in brightness of color of a fabric and selecting background color having large range width. CONSTITUTION:A sheet of fabric 40 is picked up from laminated fabrics and carried to a color detecting table 8 divided into the first and second background colors 8b and 8c different in brightness to compare both range width. A background color having large range width is selected and detection of color of fabrics is carried out on the background color.

27. 发明专利

JPH0480608A DETECTING HEAD FOR CLOTH PATTERN AND PATTERN-MATCHING DEVICE 失效
公开(公告)号：JPH0480608A
公开(公告)日：1992-03-13
申请号：JP19367690
申请日：1990-07-21
申请人： JUKI KK , JIYUUKI OPUTETSUKU KK
发明人： ARASHI SOTONARI , TOMIOKA HIROYUKI , YAMADA KAZUAKI
IPC分类号： G01B11/00 , D05B19/00 , D05B35/00 , G01B11/26
摘要： PURPOSE:To enable deviation etc. of a pattern to be detected accurately by allowing differing signals to be detected according to brightness and color of a detection point with a plurality of photodetectors. CONSTITUTION:Pattern detection heads 30A and 30B are in the same structure and each has a lens 32 for focusing a detection point etc. of a cloth, a slit plate 33, a photodetector group 34, and a color filter group 35 within a container 31. The light-receiving element group 34 consists of photodetectors 34R, 34G, and 34B and filters 35R, 35G, and 35B are placed immediately before each light-receiving surface. The filters 35R, 35G, and 35B allow only light in each wavelength region of red (R), green (G), and blue (B) to be transmitted and applied to the photodetector, thus enabling signals corresponding to the R, G, and B values which are three stimulus values of brightness and color at the detection points to be detected by each element 34R, 34G, and 34B. As a result, since color of each stripe can be detected individually even in the case of a pattern where stripes of same brightness but different color are alternately aligned, deviation of pattern etc. can be accurately detected.

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