Classifications

• • D—TEXTILES; PAPER
  • D05—SEWING; EMBROIDERING; TUFTING
  • D05B—SEWING
  • D05B57/00—Loop takers, e.g. loopers
  • D05B57/08—Loop takers, e.g. loopers for lock-stitch sewing machines
  • D05B57/10—Shuttles
  • D05B57/14—Shuttles with rotary hooks
• • D—TEXTILES; PAPER
  • D05—SEWING; EMBROIDERING; TUFTING
  • D05B—SEWING
  • D05B57/00—Loop takers, e.g. loopers
  • D05B57/26—Bobbin holders or casings; Bobbin holder or case guards; Bobbin discharge devices
  • D05B57/265—Bobbin holders or casings; Bobbin holder or case guards; Bobbin discharge devices for looptakers with vertical axis
• • D—TEXTILES; PAPER
  • D05—SEWING; EMBROIDERING; TUFTING
  • D05B—SEWING
  • D05B57/00—Loop takers, e.g. loopers
  • D05B57/26—Bobbin holders or casings; Bobbin holder or case guards; Bobbin discharge devices

Definitions

• Filament winding housing for use in a housing receptacle of a gripper body rotatable about a vertical axis of a sewing machine
• the invention relates to a thread winding housing according to the preamble of claim 1.
• Such a filament winding housing is known from DE-PS 614 062.
• the insertion of the thread of this filament winding housing is very cumbersome.
• errors may occur which impair the availability of the sewing machine.
• housings which have a supply of a sewing thread are known from DE 25 40 994 A1, JP 01-281270 A and US 2,817,307 A.
• a pivotally hinged to the housing pot housing cover is in contrast to a separate component performing cover pot of the filament winding housing according to DE-PS 614 062 captive.
• Housing cover prevents incorrect and time-consuming composition of the filament winding housing after inserting the filament winding.
• the two cover layers, between which the thread is guided, having housing cover ensures a secure cover of Fadenwickelge- housing so that the entrained by the gripper body needle thread and provided by the thread winding bobbin thread can not interfere with each other.
• An upper cover layer according to claim 2 leads to a further facilitation of the insertion process, since, in particular during insertion of the thread into a thread brake, a back pressure of the thread, which can generally be removed from the thread winding without resistance, can be built up.
• a lower window opening according to claim 3 allows a simple visual inspection of the thread over the thread still available thread supply.
• a locking body according to claim 4 ensures a secure closure of the filament winding housing and thus a secure cover of the filament winding during operation of the sewing machine. As far as the locking body is arranged between the two cover layers, this leads to a compact construction of the lockable housing cover.
• a backup of the positions of the locking body according to claim 5 facilitates the handling of the filament winding housing in addition and increases the reliability.
• a slide button according to claim 6 is easily accessible. As far as the slide button has a rounded contour, an influence of the needle thread by the slide button is practically impossible.
• a central Leitinate according to claim 7 ensures a simple removal of the thread from the filament winding during operation of the sewing machine with easy insertion of the thread winding. In this embodiment, threading of the lower thread is possible without this having to be threaded through an opening.
• a circumferential recess according to claim 8 facilitates the insertion process, in particular in the moment in which the thread between the two cover layers of the housing cover is inserted.
• a locking body according to claim 9 ensures that the once introduced into the Leitinate thread from this can no longer escape.
• a pot insertion slot according to claim 10 allows a compact thread guide.
• the arrangement of the yarn brake and the guide eye in the shell wall according to claim 11 provide a controlled trigger resistance of the lower thread with a compact design.
• a pivot bearing arrangement according to claim 12 ensures that the thread gripped by the gripper is not pulled over the pivot bearing, so that the pivot bearing design can not affect the course of the detected thread.
• FIG. 1 shows a front view of a sewing machine releasing a partial inner detail
• FIG. 2 shows a perspective and in the correct position representation of a sewing needle, a needle plate and a gripper body with pickled filament winding housing.
• Fig. 3 shows the gripper body with the filament winding housing in one
• FIG. 4 is a perspective view of the filament winding housing with closed and locked housing cover.
• Fig. 5 is a view similar to Figure 4 of the filament winding housing with the lid open and unlocked.
• Fig. 13 is a similar to FIG. 12, around the upper cover layer and the
• a sewing machine 1 has a base plate 2 with a stand 3 extending upward therefrom and an angled arm 4. The latter ends in a head 5.
• an arm shaft 6 is rotatably mounted, which drives a crank mechanism 7 with a thread lever 8 in the head 5.
• the crank drive 7 is drivingly connected to a displaceably mounted in the head 5 needle bar 9 in conjunction.
• the latter has a sewing needle 10 at its lower end.
• the sewing needle 10 can be moved up and down by the crank mechanism 7. In this case, the sewing needle 10 passes through a movement space.
• the sewing needle 10 leads in an eye from a spool 12 via a thread tensioning device and the thread lever 8 supplied needle thread 13th
• a support plate 16 On the base plate 2 is one with screws, which are guided by screw holes 14, 15, a support plate 16 is mounted on which a workpiece 17 rests.
• the support plate 16 has a feed gate 18, which is designed for the passage of a feed dog 19.
• the feed dog 19 has a shown in FIG. 1 tap hole 20 for the passage of the sewing needle 10.
• the feed dog 19 is driven by a arranged below the base plate 2 thrust and lifting gear.
• a gripper 21 which has a gripper body 22 with a hook tip 23.
• a thread winding housing 25 is rotatably mounted, in which a thread supply is received in the form of a thread winding 26.
• the gripper body 22 has a circumferential groove in which a bearing clearance is used. gerrippe the filament winding housing 25 is received.
• the filament winding 26 is also referred to as a bobbin.
• the filament winding 26 provides a lower thread 27 ready. This runs from the thread winding 26 to an outlet opening 28 on a thread path, which will be described in detail below. From the outlet opening 28, the lower or looper thread 27 extends through the needle hole 20 and the opening 18 therethrough.
• the gripper body 22 is fixedly connected to a shaft having a vertical axis 29 extending parallel to the needle bar 9.
• This shaft is rotatably mounted in a bearing block 30 which is screwed to the base plate 2.
• the drive shaft 31 is drivingly connected to the arm shaft 6 via a belt drive 32.
• the filament winding housing 25 has a housing cover 34 for covering the filament winding 26.
• the articulated connection 35 which defines a pivot bearing with a horizontal pivot axis, the housing cover 34 is pivotable on the housing pot 33 between a Closing or working position, which is shown in FIG. 4 and a thread winding insertion adjustment, which is shown in FIG. 5, pivotally.
• the housing cover 34 has a first, lower cover layer 36. This has for the passage of the lower thread 27 on a central Leitinate 37.
• the central guide eyelet 37 is formed at the end of a cover insertion slot 39 which is open at an outer edge 38 of the lower cover layer 36.
• the lid insertion slot 39 does not open straight into the Leitinate 37, but over a curved slot end portion 40th
• the first cover layer 36 is partially covered by a second, upper cover layer 41.
• the upper cover layer 41 has in the region of the guide of the lower thread 27 an upper approximately oval window opening 42.
• the inserted lower thread 27 runs under the upper Cover layer 41 parallel to this under the window opening 42, so that the lower thread 27 is freely accessible in a section through the window opening 42 from above. From above, therefore, pressure can be exerted on this thread section, z. B. by a finger is placed on this thread section in the region of the window opening 42.
• the lower cover layer 36 has a lower window cutout 43, which is aligned with the window cutout 42 of the upper cover layer 41. Through the two window cutouts 42, 43, therefore, a view from the outside of the interior of the filament winding housing 25 is possible, so that the thread supply can be controlled.
• the upper cover layer 41 has a sector-shaped circumferential recess 44, which partially overlaps with the cover insertion slot 39.
• a flat locking body 45 is arranged between the two cover layers 36, 41.
• the latter can be pivoted linearly between a retracted open position, FIG. 5, and in which the housing cover 34 can be pivoted relative to the housing pot 33, and in a locking position, which is shown in FIG. 4 and in which the housing cover 34 in the working position is locked, relocatable.
• a first linear guide of the displacement of the locking body 45 between the open and the locking position is given by a screwed from above through a slot 46 in the upper lid position 41 in the locking body 45 guide screw 47.
• Another Linearforce- tion is given by a from above forth riveted by another slot 48 in the upper lid position 41 with the locking body 45 slide button 49.
• the latter points upwards, ie to its free side towards, a rounded outline. With the aid of the slide button 49, the locking body 45 can be actuated, that is, displaced between the open position and the locked position.
• the locking body 45 is secured by means of a spring steel spring made of spring steel 50 on the one hand in the open position and on the other hand in the locked position.
• the locking body 45 has two locking grooves 51, 52, in which a free end 53 of the locking spring 50 selectively engages.
• the securing spring 50 is contour-adapted to a flat spacer body 54, which is arranged at the level of the locking body 45 between the two cover layers 36, 41.
• the spacer body 54 also serves as a spacer between the cover layers 36, 41.
• the lower cover layer 36 and the spacer body 54 have mutually aligned webs 55, 56 which are movably received in mounted housing cover 34 in a formed on the housing pot 33 U-shaped groove.
• the webs 55, 56 at the same time constitute parts of the articulated connection 35.
• the locking body 45 is arranged and shaped relative to the lower cover layer 36 such that the guide eyelet 37 in the open or closed position. Locking position of the locking body 45 is closed by this.
• the hinge connection 35 is covered by an upper-side hinge plate 58.
• the latter is screwed by means of screws 59 on the edge of the housing pot 33.
• the yarn brake 65 is formed as on the jacket wall 64 in the circumferential direction fitting leaf spring. As shown in FIG. 15, the yarn brake 65 is arranged in such a way that it clamps the lower thread 27 emerging from the casing wall 64 through the guide eye 66 against the casing wall 64 in sections. The yarn brake 65 ensures a controlled tension of the otherwise without resistance peelable from the thread winding 26 lower thread 27th
• the filament winding housing 25 is in the insertion position shown in Fig. 5. Then, as shown in FIGS. 6 and 7, the thread winding 26 is inserted into the housing pot 33. The centrally extending from the thread winding 26 free end of the lower thread 27 is then inserted from the outer edge 38 forth through the lid insertion slot 39 via the slot end portion 40 in the Leitinate 37. The Leitinate 37 closing locking body 45 then ensures that the once in the Leitinate 37 imported bobbin thread 27 from this can no longer escape. Subsequently, the lower thread 27 is guided around the lower cover layer 36 in the region of the circumferential recess 44 and inserted between the two cover layers 36, 41.
• the lower thread 27 is guided through the pot insertion slot 63. So that the lower thread 27 reaches the guide eye 66, it must be pulled between the thread brake 65 and the jacket wall 64 therethrough.
• the lower thread 27 can be drawn between the casing wall 64 and the thread brake 65 until it comes to rest in the guide eye 66. From there, the lower thread 27 is further threaded to the located at the top of the housing pot 33 outlet opening 28 and pulled up. After the threading process, the free end of about 2 cm hangs out of the outlet opening 28.
• the gripper body 22 with the rapier tip 23 rotates clockwise during sewing operation of the sewing machine 1 as viewed from above, while the filament winding housing 25 is held non-rotatably by the engagement of a holding finger formed therein in a groove formed on the underside of the platen 16, as shown in FIG. 2 shown. It captures the Hook tip 23, the needle thread 13 in the area below the stitch hole 20 and takes there during about half a turn around the filament winding housing 25 a loop of the needle thread 13.
• the side of the gripper 21 facing away from the observer in FIG. 1 is therefore referred to as the loop receiving side 68.
• loop discharge side 69 The side of the gripper 21 facing the viewer in FIG. 1 is therefore referred to as loop discharge side 69.
• the articulated connection 35 is arranged adjacent to the loop discharge side 69 of the gripper 21 when the filament winding housing 25 is inserted in the gripper body 22.

Landscapes

• Engineering & Computer Science (AREA)
• Textile Engineering (AREA)
• Sewing Machines And Sewing (AREA)
• Basic Packing Technique (AREA)

Priority Applications (6)

Applications Claiming Priority (2)

Publications (1)

Family

ID=37905871

Family Applications (1)

Country Status (7)

Cited By (1)

Families Citing this family (6)

Citations (2)

Family Cites Families (12)

• 2006
  • 2006-03-03 DE DE102006009966A patent/DE102006009966A1/de not_active Withdrawn
• 2007
  • 2007-02-21 KR KR1020087024190A patent/KR101296991B1/ko active IP Right Grant
  • 2007-02-21 WO PCT/EP2007/001478 patent/WO2007101548A1/de active Application Filing
  • 2007-02-21 AT AT07711608T patent/ATE447064T1/de active
  • 2007-02-21 CN CN2007800073231A patent/CN101395318B/zh active Active
  • 2007-02-21 DE DE502007001854T patent/DE502007001854D1/de active Active
  • 2007-02-21 EP EP07711608A patent/EP1991730B1/de active Active
  • 2007-02-21 JP JP2008557617A patent/JP2009528149A/ja active Pending

Patent Citations (2)

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