WO1998004769A1 - Threading device in sewing machine for embroidery - Google Patents
Threading device in sewing machine for embroidery Download PDFInfo
- Publication number
- WO1998004769A1 WO1998004769A1 PCT/JP1997/002602 JP9702602W WO9804769A1 WO 1998004769 A1 WO1998004769 A1 WO 1998004769A1 JP 9702602 W JP9702602 W JP 9702602W WO 9804769 A1 WO9804769 A1 WO 9804769A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- thread
- threading
- yarn
- sewing machine
- needle
- Prior art date
Links
Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05C—EMBROIDERING; TUFTING
- D05C11/00—Devices for guiding, feeding, handling, or treating the threads in embroidering machines; Machine needles; Operating or control mechanisms therefor
- D05C11/16—Arrangements for repeating thread patterns or for changing threads
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B87/00—Needle- or looper- threading devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H49/00—Unwinding or paying-out filamentary material; Supporting, storing or transporting packages from which filamentary material is to be withdrawn or paid-out
- B65H49/02—Methods or apparatus in which packages do not rotate
- B65H49/04—Package-supporting devices
- B65H49/14—Package-supporting devices for several operative packages
- B65H49/16—Stands or frameworks
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B43/00—Spool-pin assemblies incorporated in sewing machines
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B47/00—Needle-thread tensioning devices; Applications of tensometers
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B87/00—Needle- or looper- threading devices
- D05B87/02—Needle- or looper- threading devices with mechanical means for moving thread through needle or looper eye
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05C—EMBROIDERING; TUFTING
- D05C11/00—Devices for guiding, feeding, handling, or treating the threads in embroidering machines; Machine needles; Operating or control mechanisms therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/30—Handled filamentary material
- B65H2701/31—Textiles threads or artificial strands of filaments
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B65/00—Devices for severing the needle or lower thread
Definitions
- the present invention relates to a stitching machine for stabbing S8, and in particular, performs manual processing when exchanging a colored thread (in this specification, simply referred to as “thread” or “upper thread”) or when the thread is broken.
- the present invention relates to a stimulating sewing machine that can be automatically performed without using a sewing machine. Height technology
- the present invention solves the above-described problems of the conventional embroidery sewing machine, and can automatically perform processing such as replacement of a color thread or breakage of a thread without human intervention.
- the time required for the sewing machine can be shortened, and the operating efficiency and productivity of the The purpose is to provide.
- a threading device in an embroidery sewing machine includes a thread clamping member for clamping an end of a thread suspended from a thread delivery pipe, and a thread clamped by the thread clamping member. It is characterized by comprising a thread tensioning mechanism that guides the stretched thread to a balance mechanism, and a threading mechanism that guides the thread to the needle hole, while guiding the thread to the position near the needle.
- ADVANTAGE OF THE INVENTION According to the threading apparatus in the embroidery sewing machine of the present invention, it is possible to automatically perform processing such as when changing the color thread or when the thread breaks without human intervention, and the time itself required for the processing. And the operating rate and productivity of the machine can be improved.
- the accuracy of threading can be improved.
- the threading mechanism by configuring the threading mechanism with the thread pulling-out mechanism and the air nozzle, the accuracy of threading can be further improved, and the threading mechanism can be simplified.
- FIG. 1 is a front view showing a first embodiment of a thread supply device in a sewing machine according to the present invention
- FIG. 2 is a side view thereof
- FIG. 3 is a plan view thereof
- FIG. FIG. 3 is a sectional view taken along line A-A of FIG.
- FIG. 5 is a perspective view showing a thread holding body of a thread supply device in a thread feeding machine according to a second embodiment of the present invention.
- FIG. 6 shows a thread tension releasing mechanism. Is a side view, (b) is a front view, FIG. 7 shows a thread length adjusting mechanism, (a) is a side view, (b) is a plan view, and FIG. 8 shows a thread sending mechanism.
- A) is a side view, (b) is a front view, and (c) is a perspective view.
- FIG. 9 is a front view showing a modified example of the first embodiment of the thread supply device in the stimulating fiber sewing machine of the present invention
- FIG. 0 is a side view thereof
- FIG. 11 is a plan view of a main part thereof.
- FIG. 12 is a perspective view of the main part.
- FIG. 13 is a side sectional view showing a thread holder according to a modification of the first embodiment of the thread supply device in the stimulating fiber sewing machine of the present invention.
- FIG. 14 shows a first embodiment of a threading device for an embroidery sewing machine according to the present invention, wherein (a) is a side view and (b) is a front view.
- FIG. 15 is a front view of a thread tensioning mechanism of the threading device for an embroidery sewing machine according to the present invention
- FIG. 16 is a side view of the thread tensioning mechanism
- FIG. (A) is a plan view
- (b) is a side view
- (c) is a front view
- FIG. 18 shows a threading mechanism
- (a) is a side view
- Fig. 19 (b) is a front view
- Fig. 19 (c) is a plan view
- Fig. 19 is an explanatory view showing the operation state of the thread pressing mechanism of the threading mechanism
- Fig. 20 is a main part of the threading machine.
- 21 is a perspective view of FIG. 21, FIG.
- FIG. 21 shows a thread pull-out mechanism
- (a) is a plan view
- (b) is a side view
- (c) is an exploded perspective view
- FIG. 22 shows a thread cutting mechanism.
- (A) is a plan view
- (b) is a front sectional view
- FIG. 23 shows a cut yarn collecting mechanism
- (a) is a front view
- (b) is a plan view
- FIG. (A) is a plan view and (b) is a perspective view. It is.
- FIG. 25 is a front view showing a second embodiment of the stimulating sewing machine according to the present invention.
- FIG. 26 shows a thread holder of a second embodiment of the thread supply device in the embroidery sewing machine of the present invention, wherein (a) is a front view, (b) is a side view, and (c) is a plan view.
- FIG. 27 is a side view of the thread supply device in the staple fiber sewing machine of the present invention.
- FIG. 28 shows a modified example of the second embodiment of the thread supply device in the sewing machine according to the present invention, in which (a) is a front view, (b) is a side view, and FIG. 29 is a perspective view thereof.
- FIG. 30 is a front view of the yarn adjusting mechanism
- FIG. 31 is a cross-sectional view of a main part of the pipe member
- FIG. 32 is a cross-sectional view of a main part of the yarn adjusting mechanism.
- FIG. 33 is a front view of a second embodiment of the threading device for a sewing machine according to the present invention
- FIG. 34 is a side view thereof.
- FIG. 35 shows a modified example of the thread clamping member of the thread tensioning mechanism, wherein (a) is a front view, (b) is a plan view, (c) is a side view, and FIG. FIG. 37 is a perspective view of a thread pull-out mechanism, FIG. 38 is a perspective view of a modified example of the thread pull-out mechanism, FIG. 39 is a perspective view of a thread recovery mechanism, and FIG. ) Is a plan view, (b) is a front view, and FIG. 40 is a perspective view thereof.
- the embroidery sewing machine is composed of a plurality of sewing machine heads 1, a thread supply device 2, a thread tensioning mechanism 3, and a threading mechanism 6, a threading device 7, and a balance mechanism. 4.
- the main part is composed of auxiliary mechanisms 5 such as a cut thread recovery mechanism.
- the drawing of this embodiment exemplarily shows one of the sewing machine heads provided with about 30 to about 30 heads in one sewing machine.
- the same configuration as that of the embodiment is applied to other sewing heads other than those shown in the figure, and each sewing head can be synchronously driven by various common driving sources. If necessary, a clutch is interposed between the common drive source and each sewing machine head, or an independent drive source is provided for each sewing machine Heads can be driven independently, but these mechanisms are There is no fundamental difference from the sewing machine.
- a thread supply device provided in the sewing machine head of the embroidery sewing machine of the present embodiment.
- auxiliary mechanism 5 such as a cut thread collecting mechanism and the threading device 7 have all of them, but in some cases, some of the devices are replaced with other mechanisms having the same effect. And can also be omitted.
- air cylinders, solenoids, and the like used as drive sources for various drive mechanisms may be replaced with other appropriate drive sources as needed, although not described each time.
- connection mechanism such as a link mechanism, a lever mechanism, and a wire mechanism.
- this connection mechanism is not described each time, but is necessary. Can be replaced with another appropriate connection mechanism other than the embodiment.
- any high-pressure air generator other than the compressor may be used. it can.
- FIGS. 1 to 8 show a first embodiment of the thread supply device 2 installed in the upper part of a sewing head of a sewn-up sewing machine.
- This yarn supply device 2 has a bobbin storage section 2 2 that can store a plurality of colored yarn posbins 2 ⁇ , and the number of bobbins 2 1 that can be stored integrated with the bobbin storage section 22.
- a thread adjusting mechanism 24 having a main body 24 a and a thread sending mechanism 28 corresponding to a required bobbin 21 are selectively disposed above a threading device 7 for threading a predetermined needle 10.
- a thread selection mechanism 29 to be positioned.
- the bobbin housing section 22 and the thread adjusting mechanism 24 provided integrally with the bobbin housing section 22 are formed as a unit, and this is detachably attached to the sewing head 1.
- the pobin storage section 22 is, for example, configured to store a total of 18 pobins 2 1, that is, 12 pieces inclining slightly forward in the upper row and 6 pieces in the lower row horizontally. 2 2, a bobbin 21 is inserted into the bottom surface thereof, and a spindle 22 a for supporting the bobbin 21 is erected, and a thread holder 2 for pulling out the thread 11 of each pobin 21 on the upper portion so as not to be tangled. 3 is provided, and a total of 18 yarns 1 1 are pulled out from the yarn holder 2 3 at an interval, and the yarn tension adjustment mechanism 2 4 of the thread adjustment mechanism 2 4 attached integrally to the lower part of the pobin storage 2 2 Send it in.
- the thread holding member 23 has a threading hole 23 b for pulling out the thread 11 so that the thread 11 is not entangled in the threading piece support shaft 23 c provided between the pobins 21.
- 23 a is movably arranged above the bobbin 21, and a notch 23 d formed at the base of the moving piece 23 a is formed by a protrusion 2 protruding from the moving piece support shaft 23 c.
- the moving piece 23a is fixed at a predetermined position by fitting to 3e.
- the bobbin 21 can be easily attached to and detached from the bobbin storage section 22.
- An axial screen 23 f is formed at the upper end of the moving piece support shaft 23 c, and the upper end of the groove 23 f is slightly widened to form the base of the moving piece 23 a. To prevent it from coming out of the moving piece support shaft 23c.
- the thread tension adjusting mechanism 25 includes three thread tension adjusting members for each thread from each pobin 21 provided on the outer circumferential surface of the semicircular main body 24 a of the thread adjusting mechanism 24. 25 a, 25 b, and 25 c.
- one of the thread tension adjusting members 25 c has a tension for measuring the tension of thread 11.
- a force sensor 25 d is provided so that the thread breakage of thread # 1 can be detected.
- the signal from the tension sensor 25 d is converted into an electric signal from an electric contact (not shown) provided on the thread adjusting mechanism 24 to an electric circuit (shown in the drawing) provided with an electric contact provided on the sewing machine head 1.
- a display lamp (not shown) that controls the drive of the embroidery sewing machine and displays the state of the upper and lower threads arranged on the sewing machine head 1 and the like. Is turned on to inform the re-worker of thread breakage.
- a display device such as a liquid crystal display panel for displaying the state of the embroidery sewing machine to an operator and an alarm device such as a buzzer can be provided at an appropriate position of the embroidery sewing machine.
- the thread tension for releasing the holding of the thread 11 by the thread tension adjusting member 25 b is used. Release mechanism 26 is provided.
- the thread tension release mechanism 26 is operated by a thread tension release plate 26 b which is operated by a solenoid 26 a provided on the sewing machine head 1 side.
- the spring of the thread tension adjusting member 25b is compressed by way of c to release the holding of the thread 1 ⁇ ⁇ ⁇ by the thread tension adjusting member 25b.
- a thread length adjusting mechanism 27 provided below the thread tension adjusting mechanism 25 is for holding a predetermined length of the thread 11 to be sent out toward the needle 10.
- the thread 11 held by 7 is sent out by releasing the thread length adjusting mechanism 27 when the tip of the thread 11 is guided to the vicinity of the needle 10 by the threading device 7,
- a thread 17 of a predetermined length required for starting the piercing operation is passed through the needle 10.
- the thread length adjusting mechanism 27 is a thread length that is slid by a solenoid (not shown) via a wire 27a and a lever 27b.
- the length adjusting piece 27c is projected to hold the yarn 11 by a predetermined length, and the held yarn ⁇ 1 is fed out by retracting the yarn length adjusting piece 27c.
- the tip of the thread length adjusting piece 27c is formed in a concave shape so as to easily hold the thread # 1.
- the thread sending mechanism 28 provided on the outer peripheral surface of the semicircular main body 24 a of the thread adjusting mechanism 24 below the thread length adjusting mechanism 27 moves the thread 11 toward the needle 10. As shown in Fig. 8, it is connected to a thread delivery pipe 28a that guides the thread 11 above the threading device 7 and a high-pressure air source (not shown). And an air nozzle 28 b for sending out the yarn 11 toward the threading device 7.
- the air nozzle 28 b is located at the threading position, that is, the opening end of the air nozzle 28 b is located near the upper opening of the thread delivery pipe 28 a located above the threading device 7. So that the thread 11 hanging down from the thread delivery pipe 28 a located above the threading device 7 can be pinched accurately by the threading device 7.
- the biasing force of the torsion spring 28c causes the thread delivery pipe 28a to tilt around the drive shaft 28d, and the threader
- the thread delivery pipe 28a located above the device 7 is brought into contact with the posture holding piece 28e fixed to the sewing machine head 1 or by operating the drive mechanism (not shown).
- the torsion spring 28 is set up against the urging force of c.
- the thread selection mechanism 29 is selectively positioned above the threading device 7 for threading the thread delivery pipe 28 a of the thread delivery mechanism 28 corresponding to the required pobin 2 ⁇ to a predetermined needle 10.
- a spindle 29 a disposed on the sewing machine head 1 for movably mounting the thread adjusting mechanism 24 via its bottom plate 24 b, and a drive source (see FIG. (Not shown)
- a moving body 29 b that is driven and driven by a spindle 29 a as a driving axis by a link 29 c connected to, and a through hole formed in a bottom plate 24 b of the thread adjusting mechanism 24.
- the pin 29 d is fitted with the pin 24 c and projects from the pin 29 d for driving the thread adjusting mechanism 24 together with the pin 29 b.
- a positioning roller 29 h is disposed at the tip of a moving body 29 g that is driven by using a supporting shaft 29 f as a driving shaft by a link 29 e connected to the positioning roller 2 e.
- 9 h is fitted to a gear 24 d engraved around the circumference of the bottom plate 24 b of the thread adjusting mechanism 24 so as to match the angle of the thread delivery tube 28 a of the thread delivery mechanism 28.
- the thread selection mechanism 29 is controlled by the control unit of the stimulating sewing machine, and the control unit previously stores the type (color) of each of the pobins 21 stored in the pobin storage unit 22. In this way, a large number of color yarns can be automatically selected.
- a thread insertion hole is formed to hold the thread 11 from each bobbin 21 so as not to be entangled. It is desirable to provide the yarn holders 20a, 20b, 20c, 20d, and 2Oe formed at equal intervals.
- the thread tension adjusting mechanism 25 and the thread sending mechanism 28 constituting the thread adjusting mechanism 24 correspond to the number of the pobins 21 that can be stored in the bobbin storing section 22 respectively, that is, in the present embodiment.
- 18 sets are provided on the outer peripheral surface of the semi-cylindrical body 24 a of the thread adjusting mechanism 24, but the thread tension releasing mechanism 26, the thread length adjusting mechanism 27, and the thread sending mechanism
- One air nozzle 28 b and posture holding piece 28 e are provided on the machine head 1 side.
- One of these mechanisms at a predetermined position shall be operated or cooperated with the one at a predetermined position, that is, shared by 18 sets of these mechanisms.
- the bobbin housing section 22 and the thread adjusting mechanism 24 integrally provided with the bobbin housing section 22 preferably have a plurality of sewing head 1 heads. Prepare twice as many. Thereby, when exchanging the color thread, it is possible to shorten the time required for exchanging the color thread by exchanging the whole unit. For example, if the unit of this embodiment is prepared twice as many as the number of heads of the sewing machine, it is possible to exchange color threads of up to 36 colors in a short time. In this case, the type (color) of each of the pobbins 21 stored in the bobbin storing section 22 is stored in advance in the control section of the embroidery sewing machine. Can be automatically changed.
- the pobin storage section 22 and the thread adjusting mechanism 24 provided integrally therewith are formed as a unit, and this is detachably attached to the sewing machine head 1. However, these can be fixedly attached to the sewing machine head 1 as well.
- the thread delivery tube 28 a of the thread delivery mechanism 28 corresponding to the required bobbin 21 is selectively positioned above the threading device 7 for threading a predetermined needle 10.
- the yarn adjusting mechanism 24 is driven by the yarn adjusting mechanism 24 with the support shaft 29 a as the driving axis, but a mechanism that slides in a horizontal plane is adopted as the yarn selecting mechanism. You can also.
- FIGS. 9 to 13 show modified examples of the first embodiment of the thread supply device 2 disposed above the sewing head 1 of the staple fiber sewing machine.
- This thread supply device 2 has a number of pobins 2 1 that can be stored, and a pobin storage section 2 2 that can store a plurality of color thread pobins 2 1, and a bobbin storage section 22 that is integrated. Sent out toward the needle 10 and the thread tension adjustment mechanism 25 A thread adjusting mechanism 24 having a semi-cylindrical main body 24 a having a thread length adjusting mechanism (not shown; see the first embodiment described above) for holding the thread 11 by a predetermined length; A thread selecting mechanism 29 for selectively positioning a thread sending mechanism 28 corresponding to a required bobbin 21 above a threading device 7 for threading a predetermined needle 10.
- the bobbin housing 22 and the upper half of the yarn adjusting mechanism 24 provided integrally therewith that is, the yarn tension adjusting mechanism provided corresponding to the number of bobbins 21 that can be stored.
- the 25 is divided into two and divided into two units to form a unit (hereinafter referred to as “units 2A and 2B”). It is configured to be detachably attached to the thread selection mechanism 29 provided on the SB 1 via the bottom plate 24 b of the thread adjustment mechanism 24.
- the pobin storage section 22 is, for example, inclined slightly upward in the upper row so as to store a total of 18 bobbins 2 ⁇ , 9 pieces on the left and right sides.
- a spindle 22a for inserting and supporting the bobbin 2 ⁇ is erected, and a bobbin guide 22b suitable for the bobbin 21 to be used is arranged around the spindle 22a, and the thread 11 of each bobbin 21 is not entangled on the bottom surface.
- a thread holder 23 is provided on the spindle 22a, and a total of 18 threads 11 are pulled out from the thread holder 23 at intervals, and the thread of the thread adjustment mechanism 2 is integrally attached to the lower part of the pobin storage section 22. Feed it into the tension adjustment mechanism 25.
- the thread holder 23 includes a guide plate 23p disposed at the upper end of the spindle 22a, a ceramic guide tube 23q disposed at the upper end opening of the spindle 22a, and a hollow conduit of the spindle 22a. 23 r and a pipe member 23 s communicating with the hollow conduit 23, and spin the yarn 11 of each bobbin 21. The yarn is sent to the thread tension adjusting mechanism 25 via the hollow conduit 23r and the pipe member 23s of the dollar 22a.
- the operation of inserting the yarn 11 into the hollow conduit 23r and the pipe member 23s of the spindle 22a can be easily performed by blowing high-pressure airflow together with the yarn 1 from the upper end opening of the guide tube 23q. It can be carried out.
- the thread tension adjusting mechanism 25 includes three thread tension adjusting members 25 a, 25 for each thread 11 from each bobbin 2 ⁇ ⁇ provided on the outer peripheral surface of the semi-cylindrical body 24 a of the thread adjusting mechanism 24. b, 25c.
- One of the yarn tension adjusting members 25c is provided with a tension sensor 25d for measuring the tension of the yarn # 1, so that the yarn 11 can be detected as being broken.
- the signal from the tension sensor 25d is converted into an electric signal from an electric contact provided on the thread adjusting mechanism 24 (not shown) to an electric circuit provided with an electric contact provided on the sewing machine head 1 (not shown). ) To the controller of the embroidery sewing machine to control the drive of the embroidery sewing machine and to display the status of the upper and lower threads arranged on the sewing machine head 1 etc. (not shown) ) Turn on to inform the worker of thread 11 breakage.
- a display device such as a liquid crystal display panel for displaying the status of the embroidery sewing machine to the operator and an alarm device such as a buzzer can be provided at an appropriate position of the sewing machine.
- a mechanism (not shown; see the first embodiment) is provided.
- a thread sending mechanism 28 provided on the outer peripheral surface of the semi-cylindrical bottom plate 24 b of the thread adjusting mechanism 24 is for smoothly sending out the thread 11 toward the needle 10.
- An air nozzle shown in the drawing that is connected to a thread delivery pipe 28a that guides the threader 7 above and a high-pressure air source (not shown) to send the yarn 11 toward the threader 7 by a high-pressure air flow (Refer to the first embodiment described above.)
- the air nozzle is located at the threading position, that is, at the opening end of the air nozzle near the upper opening of the thread delivery pipe 28a located above the threading device 7, as in the first embodiment.
- the thread delivery tube 28 can be tilted except for the thread delivery tube 28a located above the threading device 7 and at the position where embroidery is performed.
- At least the thread delivery tube 28a at the position where the stimulus is made is made to stand by operating by an appropriate driving mechanism (not shown), and is tilted immediately after the embroidery is completed, so that the adjacent thread is provided. It is desirable that the threading device 7 can pinch the thread 11 hanging from the thread delivery pipe 28 a located above the threading device 7 accurately.
- the thread selection mechanism 29 is selectively positioned above the threading device 7 for threading the thread delivery pipe 28 a of the thread delivery mechanism 28 corresponding to the required bobbin 21 to a predetermined needle 10.
- a spindle 29 a disposed on the sewing machine head 1 for movably mounting the thread adjusting mechanism 24 via its bottom plate 24 b, and a drive source (not shown) )
- the driving body 29 b driven by the support shaft 29 a as a driving axis by a link 29 c connected to the shaft 29, and a through hole 24 formed in the bottom plate 24 b of the thread adjusting mechanism 24. and a pin 29 d protruding from an oscillating body 29 b for manually driving the thread adjusting mechanism 24 together with the oscillating body 29 b.
- a positioning roller 29 h is disposed at the tip of a driving body 29 g which is driven by a link 29 e connected to a driving source (not shown) with the supporting shaft 29 f as a driving shaft.
- the positioning roller 29 h is fitted to a gear 24 d engraved on the periphery of the bottom plate 24 b of the thread adjusting mechanism 24 to match the angle of the thread delivery pipe 28 a of the thread delivery mechanism 28.
- the thread selection mechanism 29 is controlled by the control unit of the sewing machine for sewing, and the control unit previously stores the type (color) of each pobin 21 stored in the bobbin storage unit 22. In this way, a large number of color yarns can be automatically selected.
- a threading hole is provided to hold the thread 11 from each pobin 21 so as not to be entangled. It is desirable to provide the yarn holders 20a, 20b, 20c, 20d formed at substantially equal intervals.
- the thread tension adjusting mechanism 25 and the thread sending mechanism 28 constituting the thread adjusting mechanism 24 correspond to the number of the bobbins 21 that can be stored in the bobbin storing section 22, respectively.
- 18 sets are provided on the outer peripheral surfaces of the semi-cylindrical body 24a and the bottom plate 24b of the yarn adjusting mechanism 24, respectively.
- the yarn tension releasing mechanism, the yarn length adjusting mechanism and the yarn One of the air nozzles 28 b and the like of the delivery mechanism 28 is disposed on the sewing machine 1 side, and one of the eighteen mechanisms at a predetermined position is operated or moved to a predetermined position. It should be shared with some, that is, shared by 18 sets of these mechanisms.
- Units 2A and 2B which are formed by equally dividing the bobbin storage section 22 and the thread adjusting mechanism 24 provided integrally with the bobbin storage section into right and left sides, preferably have the number of heads of the sewing machine 1. Prepare multiple multiples of. As a result, when replacing the color thread, it is necessary to replace the unit 2A or unit 2B and replace the color thread. Time can be reduced. For example, if the units 2A and 2B of the present embodiment are prepared twice as many as the number of heads of the sewing machine, it is possible to exchange color threads of up to 36 colors in a short time. In this case, the type (color) of each of the pobins 21 stored in the pobin storing section 22 is stored in advance in the control section of the embroidery sewing machine. The thread can be changed automatically.
- the bobbin housing section 22 and the thread adjusting mechanism 24 provided integrally with the bobbin housing section 22 are formed as a unit, and this is detachably attached to the sewing machine head 1. However, these can be fixedly attached to the sewing machine head 1 as well.
- the thread delivery tube 28 a of the thread delivery mechanism 28 corresponding to the required bobbin 21 is selectively positioned above the threading device 7 for threading a predetermined needle 10.
- the yarn selecting mechanism 29 is used to drive the yarn adjusting mechanism 24 with the support shaft 29 a as a driving axis, but as the yarn selecting mechanism, a mechanism that slides in a horizontal plane is used. Can also be adopted.
- a threading device 7 including a thread tensioning mechanism 3 and a threading mechanism 6 is provided below the thread supply device 2 of the sewing machine head 1.
- the thread tensioning mechanism 3 is configured to attach the end of the thread 11 suspended from the thread delivery pipe 28 a of the thread supply device 2 by a predetermined length to the needle 10.
- the thread guide member 31 guides the guide member to a nearby position, a lever 132 provided with the thread clamp member 31 at the distal end, and a sliding piece 33 swingably supporting the base end of the lever 32.
- a guide pipe 34 of a sliding piece 33 disposed substantially vertically in the thread tensioning mechanism body 30, and a belt 35 for raising and lowering the sliding piece 33 along the guide pipe 34.
- the pinion 3 2a fixed to the base end of the lever 3 2 restricts the drive angle of the lever 32 in combination with the pinion 3 2a.
- Middle rank of Drive s the guide grooves 37 formed in the thread tensioning mechanism main body 30 in a substantially vertical direction and the belt 35 by inserting the rollers 3 2 b disposed in the And a driving mechanism 38.
- the thread tension mechanism 3 can be made compact, and in particular, the thread clamping The amount by which the member 31 protrudes forward from the sewing head 1 can be reduced.
- the thread tensioning mechanism 3 drives the belt 35 to clamp the thread holding member 31 from the standby position substantially at the intermediate portion to the end of the thread 11 hanging from the thread delivery pipe 28a.
- the bracket 1 b is automatically moved to the bracket 1 b protruding from the sewing machine head 1 so that the thread clamping member 31 can automatically clamp the end of the thread 11.
- the shoe member 31e After passing through the end of the thread thread hanging from the delivery pipe 28a, the shoe member 31e is driven by a drive mechanism (not shown), and a part of the shoe 31e and the operating piece 3 1d The contact is released, the movable holding piece 31a is returned, and the thread 11 inserted between the movable holding piece 31a and the fixed holding piece 3b is held.
- the thread holding member 31 is moved from the highest position to the lowest position, and the thread 11 guided to the position near the needle 0 is moved to the position of the needle 10.
- the thread clamping member 31 is placed at the bottom of the thread tensioning mechanism main body 30 so that the end of the thread 11 that has been clamped can be released.
- the drive mechanism 38 is configured to selectively drive the rotation shaft 38a of the reverse belt 35 in both forward and reverse directions by a motor (not shown).
- the thread tensioning mechanism 3 has an appropriate position in the elevating path of the sliding piece 3 3, for example, a standby position near the intermediate position of the thread clamping member 31, and the thread clamping member 31 moves from the thread delivery pipe 28 a to
- a limit switch (not shown) is provided at the highest position for holding the end of the hanging thread No. 1 and the lowest position for threading so that the position of the sliding piece 33 can be detected.
- the E position of the limit switch shall be able to be adjusted appropriately.
- the balance is mounted on the balance 41 and the sub-balance 42 of the balance mechanism 4.
- the frame 1c provided with the needles 10 is moved in a horizontal plane.
- the number of sets of needles 10 provided on the frame 1c may be increased or decreased, or the frame 1c may be configured to slide in a horizontal plane.
- the balance 41 has a threading hole 41a at the distal end and a cutout 41b into which the drive pin 41c of the balance 41 is inserted at the base end.
- the sub-balance 42 has a ring-shaped thread hooking hole 42 a, a lever 42 b having a thread hooking hole 42 a at its tip, and a sliding piece 4 slidably supporting the lever 42 b.
- the magnet piece 4 2 e for elevating and lowering along the guide tube 34 in accordance with the raising and lowering of the thread holding member 3 1 and the roller 4 2 f provided at the other end of the lever 4 2 b come into contact with the thread hook.
- a spring member 4 2 urges a shoe member 4 2 g for regulating the position of the hole 42 a and a roller 42 f provided at the other end of the lever 42 b so that the roller 42 f contacts the shoe member 42 g. h.
- the auxiliary balance 42 of the balance mechanism 4 drives the belt 35 of the thread tensioning mechanism 3 so that the thread clamping member 31 is suspended from the standby position at the substantially middle portion from the thread delivery pipe 28a.
- the sliding piece 4 2c is attracted to the thread clamping member 31 and also moves to the highest position, and the thread is sent out to the threading hole 42a.
- the end of the thread 11 hanging from the tube 28a is inserted.
- the yarn holding member 3 1 Move from the highest position to the lowest position.
- the sliding piece 42c is also adsorbed by the thread holding member 31 and also descends, but the sliding piece 42c is further increased by the storage member 42i provided at approximately the middle position. Since the descent is prevented, the suction with the thread holding member 31 is released, and the robot stops at this position, that is, the standby position at the bottom dead center.
- the lever 4 2b provided with the thread hooking hole 4 2a in which the thread 11 is inserted at the tip is replaced with the roller 4 provided at the other end.
- the thread ⁇ ⁇ ⁇ is passed through the thread hook hole 4 ⁇ a formed at the tip of the balance 41.
- a thread such as a trap be formed in the thread hooking hole 4 1a of the ceiling 41 in order to prevent the hooked thread 11 from slipping out.
- 1 is the thread of the balance 4 mm thread hole 4 1a and the thread of the sub-balance 4 2 It is hung on the cauldron 42a and stabbed while being held in the required zigzag shape.
- the balance 41 is reciprocated by the same drive mechanism as the conventional embroidery sewing machine, while the sub balance 42 is held at the standby position at the bottom dead center.
- the threading mechanism 6 pulls the thread 11 guided to a position near the needle 10 by the thread tensioning mechanism 3 and the needle hole 10 O of the needle 10.
- the thread 11 is held by the thread pull-out mechanism 61, the drive mechanism 62 of the thread pull-out mechanism 61, and the thread pinching member 31 of the thread tensioning mechanism 3.
- the thread pulling mechanism 61 In order to more securely hold the air nozzle 63 provided on the thread holding member 3 1 for feeding the yarn toward the pulling mechanism 6 S and the thread 11 inserted through the thread pulling mechanism 61, by the thread pulling mechanism 61.
- a thread pushing mechanism 64 disposed on the thread pulling mechanism 61 of FIG.
- the thread pulling mechanism 61 includes a hook member 61 a having a hook-shaped tip and spacers 16 on both sides of the hook member 61 a.
- Guide members 61b, 61b arranged via 1f, 61f, hook members 61a, guide members 61b, 61b, and spacers 61f, 61f.
- a holding member for holding the tip member made of 6 g.
- the guide members 61b and 61b are directed outward from each other so as to guide the hook member 61a to the center of the needle ⁇ 0, that is, the position of the needle hole 10a, when the guide member 61b contacts the needle 10.
- the curved tips 61e, 61e it is constituted by a leaf spring formed in a shape to abut the side surface of the hook member 61a, and a thread hole 61c is formed substantially at the center thereof. Further, a yarn escape groove 61 d is formed from the yarn through hole 6 ⁇ c toward the tip.
- the drive mechanism 62 of the thread pulling mechanism 61 is set up on the side of the sewing machine head 1 that supports the holding member 61g of the thread pulling mechanism 61.
- the thread pushing mechanism 64 has a thread pushing piece 64a movably arranged via a shaft 64c on a thread pulling mechanism 61 arranged on the holding member 61g, and a direction for shielding the thread insertion hole 61c, that is, A thread spring 64b for urging the thread pressing piece 64a in the direction of pushing down the thread 11 along the side surface of the guide member 61b, and a thread pushing piece 64 piled on the urging force of the torsion spring 64b.
- the thread pressing piece 64a and the operating pieces 64d, 64e of the thread pressing piece 64a formed on the frame 62a of the drive mechanism 62, respectively. Consists of
- the threading mechanism 6 pushes the distal end of the driving lever 62b forward by the driving mechanism 62c, thereby piercing the base end of the driving lever 62b.
- the pulling-out mechanism 61 is lowered via the holding member 61 g.
- the tip of the drive lever 62b is further pushed forward by the drive mechanism 62c, whereby the pivot 62g of the drive lever 62b is advanced along the groove 62e formed in the frame 62a, and the drive is performed.
- the pin 6 Advance the pull-out mechanism 61 via the holding member 61 g to which 1 h is fixed.
- the drive mechanism 62 drives the drive lever 62b by the drive mechanism 62c to lower and advance the thread pull-out mechanism 61.
- the hook member 61a is guided by the guide member 61b.
- the thread selection mechanism 29 of the thread supply device 2 is driven as shown in FIGS. 14 to 15.
- the thread delivery pipe 28a is moved to the left side (right side) to perform stimulation.
- An auxiliary mechanism 5 including an upper thread clamp mechanism 51, a thread cutting mechanism 52, and a cut thread recovery mechanism 53 is disposed on the path around which the thread 11 is looped.
- the upper thread clamp mechanism 51 is for temporarily clamping the thread 11 to prevent the new thread 11 from being unreeled from the bobbin 21 when cutting and collecting the thread 11.
- a fixed holding piece 51a fixed to the sewing machine head 1 side, a movable holding piece 51b for clamping the thread 11 between the fixed holding piece 51a, and a movable holding piece It is composed of a driving mechanism 51c of 51b.
- the thread cutting mechanism 52 is for cutting the thread ⁇ when exchanging the thread 11 or the like. As shown in FIG. 22, the thread cutting mechanism 52 includes a fixed blade 52a fixed to the sewing machine 1 side and a pivot 52b. And a driving mechanism 52d for the movable blade 52c.
- the cut thread collecting mechanism 53 is for collecting the thread 11 that has been cut by the thread cutting mechanism 52 when, for example, replacing the thread 1 ⁇ , and as shown in FIG.
- the operating rod 53c formed with the hook 53b for hooking 1 and the driving mechanism 53d of the operating rod 53c and the operating rod 53c are slidably inserted, and the cut thread 11 1 is pulled in.
- the suction pipe 53e to be collected, the high pressure air introduction pipes 53f and 53g for generating a suction force in the suction pipe 53e, and the collected thread 11 detachably attached to the collection mechanism body 53a are separated. It consists of a collection container 53 h formed of a net to store.
- the sewing machine head 1 is provided with a cover body 8 as shown in FIG.
- the lower thread clamp machine 811 prevents the thread 11 below the lower thread clamp mechanism 8 1 from feeding out when the puncture starts, so that the end of the thread 11 1 comes out on the surface of the sewn cloth. This is for temporarily clamping the thread 11 to prevent threading.
- the thread 1 1 is fixed between the fixed holding piece 8 1a fixed to the machine head 1 and the fixed holding piece 8 ⁇ a. And a driving mechanism 81c of the movable holding piece 8b.
- the sensor 8 2 that detects the state of the thread 11 optically detects the return of the thread 1, and stops the stimulation when the return of the thread 11 occurs. To prevent the occurrence of defective products. As shown in FIG. 24, the light emitting and receiving element 82a, the light emitting and receiving element 82a and the thread 11 And mirrors 8 2 b opposed to each other.
- FIGS. 25 to 32 show a second embodiment of the thread supply device 2 arranged above the sewing machine head of the embroidery sewing machine.
- This yarn supply device 2 has a number of bobbins 2 1 that can be stored, and a pobin storage section 2 2 that can store a plurality of colored yarn pobbins 2 ⁇ and a bobbin storage section 22 that is integrated with the bobbin storage section 22.
- a flat rectangular shape provided with a thread tension adjusting mechanism 25 provided with a thread, a thread length adjusting mechanism 27 for holding the thread 1 ⁇ sent out toward the needle 10 by a predetermined length, and a thread sending mechanism 28.
- a thread adjusting mechanism 24 having a main body 24a and a thread feeding mechanism 28 corresponding to a required bobbin 21 are selectively positioned above a threading device 7 for threading a predetermined needle 10. And a thread selection mechanism 29 to be operated.
- the number of the pobins 21 that can be stored in the pobin storage section 22 and the number of the thread tension adjusting mechanisms 25 need not necessarily match, and the number of the pobins is larger than the number of the thread tension adjusting mechanisms 25. Increase the number of bobbins 21 that can be stored in section 22 and change the bobbin 2 1 for threading to the thread tension adjustment mechanism 25. can do.
- the bobbin storage section 22 stores, for example, a total of 28 bobbins 2 ⁇ of 4 ⁇ 7.
- the bobbin storage section 22 has a spindle 22 a for inserting and supporting the bobbin 21, and a spindle 22 a.
- a bobbin guide (not shown) suitable for the bobbin 21 to be used is provided around 22a, and a bottom lug 22c for pulling out the thread 11 of each pobin 21 so that it does not get tangled is installed on the bottom surface. I do.
- a thread holder 23 is provided on the spindle 22a, and a total of 28 threads ⁇ 1 are pulled out from the thread holder 23 at an interval, and the thread of the thread adjusting mechanism 24 integrally attached to the lower city of the pobin storage space 22 is provided. Feed it into the tension adjustment mechanism 25. Eight out of a total of 28 yarns 1 mm are held by the yarn holder 23.
- the thread holding member 23 includes a ceramic guide tube (not shown) disposed at the upper end opening of the spindle 22a, a hollow conduit of the spindle 22a, and a pipe member 23s communicating with the hollow conduit. And a ceramic guide tube 23t disposed at the tip end of the pipe member 23s, and the yarn 11 of each bobbin 21 is connected to the hollow conduit of the spindle 22a and the pipe member 23s. Through the thread tension adjusting mechanism 25.
- the operation of inserting the yarn 11 into the hollow conduit of the spindle 22a and the pipe member 23s can be easily performed by blowing a high-pressure airflow together with the yarn 11 from the upper end opening of the guide tube 23q. It can be carried out.
- the pobin housing section 22 is fixed to the sewing machine head 1 and disposed.
- the storage unit 22 is divided into two equal parts on the left and right sides to form a unit. This is the upper part of the flat rectangular main body 24 a of the thread adjusting mechanism 24. It can be detachably attached to the device.
- the bobbin storage section 22 stores, for example, a total of 20 bobbins 2 1 on the left and right, 2 x 5 in total, and a total of 20 bobbins 21.
- bobbin guides (not shown) suitable for the pobin 21 used around the spindle 2 2a are arranged, and the thread of each bobbin 21 is placed on the bottom surface. Lay a felt 2 2 c to pull out 1 1 so that it does not become tangled.
- the storage table 2 2 d on which the spindle 22 a is erected is attached to the guide rail 22 i formed on the upper part of the main body 24 a of the thread adjusting mechanism 24 so as to be removably attached.
- the pipe member holding member 23 u fixed to the opening at the tip end of the pipe member 23 s communicating with the hollow conduit of the spindle 22 a is used as the storage member when detaching the storage member 22 d.
- the storage bases 22 d are temporarily placed and stored along the guide rails 22 i.
- the base support 2 2 d is fixed so that the base 2 2 d can slide smoothly, and the pipe member 23 s is supported to support the pipe member 23 s.
- a pipe member support frame 22h is slidably provided to prevent drooping from adjusting and entanglement.
- the storage table 2 2 d of the pobin storage section 22 be prepared in plural numbers of the number of heads of the sewing machine 1. Accordingly, when the color yarn is replaced, the storage unit 22d is replaced every time, and the time required for the replacement of the color yarn can be reduced.
- the storage table 22 d of the pobin storage section 22 If the number of heads is twice as large as the number of heads, replacement of up to 40 colors can be performed in a short time.
- the type (color) of each pobin 21 stored in the storage unit 2 2 d of the pobin storage unit 2 2 is stored in advance in the control unit of the embroidery sewing machine, thereby replacing the storage unit 2 2 d. By simply doing this, a large number of color yarns can be exchanged automatically.
- the storage table 2 2 d is detachably attached by sliding on the guide rail 22 i formed on the upper part of the main body 24 a of the thread adjusting mechanism 24.
- the table 22 d By mounting the table 22 d on the upper part of the main body 24 a of the thread adjusting mechanism 24, it is possible to removably attach it.
- the number of divisions of the bobbin storage section 22 is not limited to two, but may be three or more.
- the yarn tension adjusting mechanism 25 is provided on the outer surface of the flat rectangular main body 24 a of the yarn adjusting mechanism 24, and each of the yarns 11 from each pobin 2 ⁇ is provided.
- a tension sensor 25 d for measuring the tension of the yarn 11 is provided on one of the yarn tension adjusting members 25 ⁇ so that a yarn breakage of the yarn 11 can be detected.
- the signal from the tension sensor 25 d is converted into an electric signal from the electric contact 25 e disposed on the thread adjusting mechanism 24 to the electric contact 25 f disposed on the sewing machine head 1.
- An indicator lamp that is sent to the control unit of the embroidery sewing machine via 5 g to control the drive of the embroidery sewing machine and displays the status of the upper and lower threads arranged on the sewing machine head 1 etc. (Omitted) Lights up to inform the operator of thread breakage.
- a display device such as a liquid crystal display panel for displaying the state of the embroidery sewing machine to an operator and an information device such as a buzzer can be provided at an appropriate position of the embroidery sewing machine.
- the thread tension for releasing the holding of the thread 11 by the thread tension adjusting member 25 b is used.
- a release mechanism 26 is provided (for details, refer to the thread tension release mechanism 26 of the above-described second embodiment).
- the sewing machine head 1 near the main body 24a of the thread adjusting mechanism 24 has a thread tension adjusting member 25b, 25c for adjusting the magnitude of the tension of the thread ⁇ ⁇ applied by the two thread tension adjusting members 25b, 25c.
- Thread tension adjuster of 25h shall be provided.
- the thread tension adjuster 25 h applies a tension equivalent to the tension applied to the thread ⁇ 1 via a balance 41, a sub-balance 42, a needle 10, etc., located below the thread supply device 2 described later. This makes it possible to hang the thread 1 1 on the balance 4 1, the auxiliary balance 4 2, the needle 10, etc. without hanging the thread 1 1 on the two thread tension adjusting members 25 b, 25 c
- the magnitude of the tension of the thread 11 from each of the pobins 21 applied by the method can be uniformly adjusted.
- the thread tension adjuster 25 h is provided with a magnet at the base thereof, and is provided at an appropriate position of the sewing machine head 1, more specifically, the thread 1 from each bobbin 21 toward the needle 10. 1 is provided so that it can be selectively detachably installed at a position below the yarn sending pipe 28 a of the yarn sending mechanism 28 provided for sending out the yarn 1.
- a thread delivery mechanism 28 provided on the outer surface of the flat rectangular main body 24 a of the thread adjusting mechanism 24 is for smoothly delivering the thread 11 toward the needle 10.
- the air nozzle 28 b is fixed so that the opening end of the air nozzle 28 b is located near the upper opening of the thread delivery pipe 28 a, and is positioned above the threading crab 7 and at the position where the pricking is performed.
- High-pressure air against the air nozzle 28 b of the yarn delivery pipe 28 a The high-pressure air supply tube 28 f should be slidably provided so that high-pressure air can be supplied from the air supply tube 28 f.
- the high-pressure air supply pipe 28 f and the air nozzle 28 b are connected to the high-pressure air supply pipe 28 f by sliding the high-pressure air supply pipe 28 f as shown in this embodiment. 8b and the high-pressure air supply pipe 28f and the sealing member provided at the open end of the air nozzle 28b.
- the nozzle 28 b can be configured to be connected in a hermetically closed manner.
- the thread selection mechanism 29 is selectively positioned above the threading device 7 for threading the thread delivery tube 28 a of the thread delivery mechanism 28 corresponding to the required bobbin 2 ⁇ to a predetermined needle 10.
- the thread adjusting mechanism 24 is attached to the sliding shaft 29 i provided on the sewing machine head 1 together with the pobin storage section 22 so as to be slidable in a horizontal plane, and the adjacent thread adjusting mechanism is attached.
- the main body 24a of the mechanism 24 is connected to each other by the connecting member 24e, and all the thread adjusting mechanisms along the sliding shaft 29i are driven by a drive source (not shown). 2 4a is interlocked and held, and above the threading device 7 for threading the thread delivery tube 28a of the thread delivery mechanism 28 corresponding to the required pobin 21 to the predetermined needle 10. It is configured so that it can be accurately positioned.
- the thread selection mechanism 29 is controlled by the control unit of the sewing machine for stimulating fiber, and the control unit previously stores the type (color) of each of the pobbins 21 stored in the bobbin storage unit 22. In this way, a large number of color yarns can be automatically selected.
- the configuration of the thread length adjusting mechanism 27 and the like provided below the thread tension adjusting mechanism 25 is the same as that of the first embodiment.
- a second embodiment of a threading device 7 including a thread tensioning mechanism 3 and a threading mechanism 6 disposed below a thread supply device 2 of a sewing head 1 of a staple fiber sewing machine will be described in a third embodiment. 3 to 40.
- the yarn tensioning mechanism 3 moves the end of the yarn 11 suspended from the yarn delivery pipe 28 a of the yarn supply device 2 by a predetermined length to a position near the needle 10.
- the drive mechanism 38 is included.
- the thread tensioning mechanism 3 is composed of the lever 32, the sliding piece 33 that moves up and down, and the like, so that the thread tensioning mechanism 3 can be made compact. The amount by which Head 1 protrudes forward can be reduced.
- the thread tensioning mechanism 3 drives the belt 35 to move the thread holding member 31 from a substantially intermediate standby position (the sliding piece 33 is at the position of the position sensor 39c) to the open position of the thread holding member 31 (the position of the position sensor 39c).
- the sliding piece 33 is positioned at the highest position where the end of the thread 1 ⁇ hanging from the thread delivery pipe 28a is clamped via the position sensor 39b (the position of the position sensor 39b). ) So that the thread clamp member 31 can automatically clamp the end of the thread 1 when it is moved to the bracket.
- the thread holding member 31 By driving the belt 35 in this state, the thread holding member 31 is moved from the highest position (the sliding piece 33 is at the position of the position sensor 39a) to the lowest position (the sliding piece 33 is at the position of the position sensor 39d). ), And the thread 11 guided to the position near the needle ⁇ 0 is guided to the needle hole 1 O a of the needle 10, and after performing threading, the thread 1 held by the thread clamping member 31 is An operating member is swingably arranged below the thread tensioning mechanism main body 30 so that the end of the thread tensioning mechanism body 30 can be released, and the operating member projects the movable holding piece 31 a of the thread holding member 31.
- the roller 31f disposed at the tip of the provided operation piece is pressed to operate, so that the movable holding piece 31a is piled up by the urging force of the spring member and opened (similar to the first embodiment).
- the drive mechanism 38 is configured to be able to selectively drive the rotation shaft 38a of the re-belt 35 in both the forward and reverse directions by a motor (not shown).
- the arrangement positions of the position sensors 39, 39b, 39c, and 39d can be adjusted as appropriate.
- the air nozzle 63 As a mechanism for supplying high-pressure air to the air nozzle 63 disposed on the thread holding member 31, the air nozzle 63 is directly connected to a high-pressure air source (not shown) via a high-pressure air supply pipe.
- the air nozzle 63 and the high-pressure air supply pipe arranged on the fixed side are fitted.
- the air nozzle 63 and the high-pressure air supply pipe 63a are hermetically connected by a sealing member provided at the open end of the air nozzle 63 and the high-pressure air supply pipe 63a. It can be configured to be.
- the opening and closing operation of the thread holding member 31 of the thread tensioning mechanism 3 is performed by a single member and an Although it is configured to be performed by members, the present invention is not limited to this.
- the yarn is held between the movable holding piece 31a and the fixed holding piece 31b.
- a torsion spring 3 1 j for urging the member 3 1 in the closing direction is provided to constitute the thread holding member 3 1, and the opening and closing operation of the thread holding member 3 ⁇ is performed at the upper and lower portions of the thread tensioning mechanism main body 30.
- a drive mechanism 31 i thereof is provided to constitute the thread holding member 3 1, and the opening and closing operation of the thread holding member 3 ⁇ is performed at the upper and lower portions of the thread tensioning mechanism main body 30.
- the frame 1c provided with the needles 10 is moved in a horizontal plane.
- the number of sets of needles 0 provided on the frame 1c can be reduced, or the frame 1c can be configured to slide in a horizontal plane.
- the ceiling 41 has a threading hole 41a at the distal end and a cutout 41b into which the drive pin 41c of the balance 41 is inserted at the base end.
- the auxiliary balance 42 includes a ring-shaped thread hooking hole 42 a, a lever 42 having the thread hooking hole 42 a at the tip, and a sliding piece 4 slidably supporting the lever 42 b. 2 c, guide tube 4 2 d of sliding piece 4 2 c arranged substantially vertically in thread tensioning mechanism main body 30, and sliding piece 4 2 c with thread holding member of thread tensioning mechanism 3 3 Magnet piece 4 2 e for moving up and down along guide tube 34 in accordance with raising and lowering of thread holding member 3 1 by attracting to 1 and roller 4 2 f arranged at the other end of lever 4 2 b Abuts the shoe member 42 that regulates the position of the threading hole 42a, and the roller 42f disposed at the other end of the lever 42b so as to contact the shoe member 42g.
- the balance 41 is reciprocally driven by the same drive mechanism as the conventional embroidery sewing machine, while the sub balance 42 is held at the standby position at the bottom dead center. Note that these configurations and operations are the same as in the above-described third embodiment.
- the basic configuration of the threading mechanism 6 is the same as that of the first embodiment.
- the thread pushing mechanism 64 has a shaft 64c attached to the thread pulling mechanism 6 as shown in FIG.
- the tip 6 4 f of the thread pressing piece 6 4 a movably arranged through the hook is formed into a hook shape, and the thread 11 hooked on the hook member 6 1 a does not come off the hook member 6 1 a Like that.
- the thread pushing mechanism 64 is used so that the thread ⁇ 1 is securely hooked on the hook member 6 1a of the thread pulling mechanism 61 of the threading mechanism 6.
- the air nozzles 65a and 65b are provided on the side of the guide members 61b and 61b of the thread pull-out mechanism 61, as shown in a modified example shown in FIG.
- the thread is threaded, and then the thread selecting mechanism 29 of the thread supply device 2 is driven to thereby control the thread. 11 While the 1 is laid, move the thread delivery tube 28a to the next step (to the right) to perform the stab.
- An auxiliary mechanism including an upper thread clamping mechanism, a thread cutting mechanism, and a cut thread collecting mechanism 53 is provided on the path where the thread 11 is laid.
- the cut thread collecting mechanism 53 is used when the thread 11 is replaced. It is for collecting the thread 11 cut by the structure, and as shown in FIGS. 39 to 40, an operating rod 53 formed with a hook 53b for hooking the thread 11 at its tip. And a driving mechanism 53d for the operating rod 53c and a suction pipe 53e, 53i for slidably penetrating the operating rod 53c to draw in and collect the cut thread 11. And suction pipes 53 f, 53 g for generating suction force or sending power to the suction pipes 53 e, 53 i, 53 j, and at the tip of the suction pipe 53 j.
- the retractable container 53 h formed of a net that stores the collected yarn 1 that is detachably disposed, and the collection mechanism main body 53 a is set to the standby position with the driving shaft 53 m as the center.
- the drive mechanism 53k is configured to swing and drive between the thread 11 and the collection position.
- the embroidery sewing machine of the present embodiment is different from the embroidery sewing machine of the first embodiment.
- sewing machine 1 In this cover body, the thread ⁇ 1 when the thread delivery pipe 28 a is moved to the embroidery position one step side (right side) while the thread 11 is laid
- a lower thread clamp mechanism for clamping the thread 11 and a sensor for detecting the state of the thread 11 are arranged in the route.
- the bobbins 21 of the respective color threads are stored in the bobbin storage sections 22 of the thread supply device 2 arranged above or separately from the sewing head of the embroidery sewing machine.
- the yarn 11 drawn out from 2 ⁇ is wound over the yarn tension adjusting mechanism 24 via the yarn holder 23, and the end of the yarn 11 is hung from the yarn delivery pipe 28a by a predetermined length.
- the thread delivery pipe 28a of the thread delivery mechanism 28 corresponding to the required bobbin 21 is selectively and accurately positioned above the threading device 7 for threading. Then, while driving the belt 35 of the yarn tensioning mechanism 3 while sending high-pressure air from the air nozzle 28 b into the yarn delivery pipe 28 a, the yarn clamping member 31 is moved near the intermediate position. From the standby position, the end of the thread 1 ⁇ ⁇ suspended from the thread delivery pipe 28 a is moved to the highest position for holding the end of the thread 1 ⁇ , and the end of the thread 1 ⁇ is held by the thread holding member 31.
- the yarn length adjusting piece 27 c of the yarn length adjusting mechanism 27 is advanced while the resistance of the yarn tension adjusting mechanism 25 is not applied to the yarn 11 by the yarn tension releasing mechanism 26.
- the yarn holding member 31 is lowered by driving the belt 35 of the yarn tensioning mechanism 3 while holding the weft 11 by a predetermined length, and the end of the yarn 11 is at the threading position.
- the needle should be guided to a position near the needle 10.
- the thread 11 stretched by the thread tensioning mechanism 3 between the thread delivery pipe 28 a and the position near the needle 10 at the threading position is the balance 4 1 of the balance mechanism 4 and It is hung on the sub balance 4 2.
- the tip of the hook member 61a is lowered and advanced in advance in a state where the resistance of the thread tension adjustment mechanism 25 is applied to the thread 11. It is held by the thread holding member 3 1 of the thread tensioning mechanism 3 in the thread insertion hole 6 1 c of the guide member 6 1 b of the thread pull-out mechanism 6 that has passed through the needle hole 10 a of the needle 10.
- the high-pressure air is fed from the air nozzle 63 provided on the yarn holding member 3 to the yarn pulling-out mechanism 61, and the yarn 11 is passed through the yarn 11 and the yarn length of the yarn length adjusting mechanism 27
- the held yarn ⁇ 1 can be sent out, the holding of the yarn 11 by the yarn holding member 31 is released, and the yarn is held by the yarn length adjusting mechanism 27.
- the thread 11 of the required length is inserted into the thread insertion hole 6 1c of the guide member 6 1b of the thread pull-out mechanism 61.
- the yarn pulling-out mechanism 61 is retracted, and the thread pressing piece 64a is moved in a direction to shield the thread hole 61c.
- the thread pulling-out mechanism 61 is retracted while accurately hooking the hook member 61a, and the threading is performed by pulling out the hook member 61a from the needle hole 10a.
- the yarn delivery pipe 28a is moved one step side (right side) while the yarn 11 is being stretched. To do it.
- the lower thread clamp mechanism 81 temporarily clamps thread 11 to prevent unwinding of thread 11 below the lower thread clamp mechanism 8 1, and the end of thread ⁇ 1 From coming out on the surface of the cloth.
- the operating rod of the cut thread collecting mechanism 53 is clamped by the upper thread clamp mechanism 51 to clamp the thread 11 to prevent new thread from being unwound from the pobin 21.
- the thread 11 is hooked on the hook 5 3b formed at the tip of 53 c, the thread ⁇ 1 is cut in front of and below the needle plate and in the thread cutting mechanism 52, and the cut thread 11 is removed.
- the cut yarn is collected in the collection container 53 h via the suction pipe 53 e of the cut thread collection mechanism 53.
- the steps of performing threading and stimulating fiber are repeated.
- the threader in the sewing machine for embroidery of the present invention when a color thread is replaced or when a thread breaks, processing and the like can be automatically performed without human intervention, and the time required for the processing itself can be improved. Therefore, since the operating rate and productivity of the sewing machine can be improved, it can be suitably used particularly for an embroidery sewing machine in which many colored yarns are frequently replaced.
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Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP97933039A EP0921225A4 (en) | 1996-07-30 | 1997-07-28 | Threading device in sewing machine for embroidery |
JP50869198A JP3162082B2 (en) | 1996-07-30 | 1997-07-28 | Threader in embroidery sewing machine |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
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JP21778496 | 1996-07-30 | ||
JP8/217784 | 1996-07-30 | ||
JP8297342A JP2000073273A (en) | 1996-07-30 | 1996-10-17 | Sewing machine for embroidery |
JP8/297342 | 1996-10-17 |
Publications (1)
Publication Number | Publication Date |
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WO1998004769A1 true WO1998004769A1 (en) | 1998-02-05 |
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ID=26522205
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1997/002601 WO1998004768A1 (en) | 1996-07-30 | 1997-07-28 | Thread supplying device for sewing machine for embroidery |
PCT/JP1997/002602 WO1998004769A1 (en) | 1996-07-30 | 1997-07-28 | Threading device in sewing machine for embroidery |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP1997/002601 WO1998004768A1 (en) | 1996-07-30 | 1997-07-28 | Thread supplying device for sewing machine for embroidery |
Country Status (5)
Country | Link |
---|---|
EP (1) | EP0921225A4 (en) |
JP (3) | JP2000073273A (en) |
KR (1) | KR20000029458A (en) |
CN (1) | CN1225697A (en) |
WO (2) | WO1998004768A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2001066847A1 (en) * | 2000-03-07 | 2001-09-13 | Miyamoto Kabushiki Kaisha | Yarn passing device of sewing machine for embroidery |
WO2004048668A1 (en) * | 2002-11-26 | 2004-06-10 | Miyamoto Kabushiki Kaisha | Embroidery robot |
WO2006052090A1 (en) * | 2004-11-11 | 2006-05-18 | Inbro Co., Ltd. | Operating method of an embroidering machine |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
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WO1995029205A1 (en) * | 1994-04-27 | 1995-11-02 | Matsushita Electric Industrial Co., Ltd. | Thermosetting composition, molding material, molded structure, and method of decomposing them |
JP4039099B2 (en) | 2002-03-28 | 2008-01-30 | ブラザー工業株式会社 | sewing machine |
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- 1997-07-28 CN CN97196598A patent/CN1225697A/en active Pending
- 1997-07-28 WO PCT/JP1997/002601 patent/WO1998004768A1/en active Application Filing
- 1997-07-28 WO PCT/JP1997/002602 patent/WO1998004769A1/en not_active Application Discontinuation
- 1997-07-28 KR KR1019997000427A patent/KR20000029458A/en not_active Application Discontinuation
- 1997-07-28 JP JP50869198A patent/JP3162082B2/en not_active Expired - Fee Related
- 1997-07-28 JP JP50869098A patent/JP3192153B2/en not_active Expired - Fee Related
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Cited By (4)
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WO2001066847A1 (en) * | 2000-03-07 | 2001-09-13 | Miyamoto Kabushiki Kaisha | Yarn passing device of sewing machine for embroidery |
US7036442B2 (en) | 2000-03-07 | 2006-05-02 | Miyamoto Kabushiki Kaisha | Yarn passing device of sewing machine for embroidery |
WO2004048668A1 (en) * | 2002-11-26 | 2004-06-10 | Miyamoto Kabushiki Kaisha | Embroidery robot |
WO2006052090A1 (en) * | 2004-11-11 | 2006-05-18 | Inbro Co., Ltd. | Operating method of an embroidering machine |
Also Published As
Publication number | Publication date |
---|---|
JP3162082B2 (en) | 2001-04-25 |
EP0921225A4 (en) | 2000-07-12 |
JP2000073273A (en) | 2000-03-07 |
EP0921225A1 (en) | 1999-06-09 |
WO1998004768A1 (en) | 1998-02-05 |
JP3192153B2 (en) | 2001-07-23 |
CN1225697A (en) | 1999-08-11 |
KR20000029458A (en) | 2000-05-25 |
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