CN1962986A - Chain type thread track sewing machine - Google Patents

Abstract

A chain type thread track sewing machine, includes: a machine needle (11), a rotary shuttle, a machine line knot cam (32) having a cam part (61), a resist part (71) approaching inarching the cam part, a swing mechanism (70) swinging through the axial part (62) as the center, a machine line holding part (63) for processing firm machine line knot, a swing mechanism (70), a switching motion mechanism (73) having an executing position and a non-executing position for the switch machine line knot, utilizing the switch of each position to select the formation for executing and non-executing machine line knot. In addition, disposed is an elastomer (75) for maintaining the switching motion part at each position using the racking force. Thereby, chain type thread track sewing machine can easily process the switch with or without the firm line knot.

Description

Chain sitch sewing machine

Technical field

The present invention relates to a kind of sewn object be made the chain sitch sewing machine that thing is made.

Background technology

Generally speaking, because chain sitch sewing machine, (LOCK STITCH) is different with the flush joint stitching, only with the stitching of needlework formation as mesh, so be unlock to till the stitching on every side in case any one stitching is untied always.For example making on the chain-type stitch button-sewing machine of button, having with chain-type stitch: the eedle that moves up and down, keep cloth and button and to the left and right or the maintaining body that moves back and forth of front and back, at the machine shuttle of when falling pin, catching the machine line under the needle plate at every turn from eedle.

In addition, make button and cloth move back and forth alternately fall pin and when falling pin, machine line line cover is wound in the fall machine line line of pin of the next one at every turn and puts of two through wires holes at button with respect to the eedle that moves up and down, carry out the button of single line chain type stitching and make to prescribed direction.

But, on above-mentioned single line chain type stitching, because the machine line all unclamps and makes thing and come off from sewn object if the least significant end of machine line is overcome difficulties then, so generally be falling during pin before the most last fall pin and one pin, at the same position pin that falls repeatedly, with the machine line knotting of carrying out the end of machine line is fastened.But, owing in the fall line cover that during pin form of this machine line knotting method before a pin of the most last pin that falls, only passed the terminal of machine line and be captive, so the end with machine line is as if deviating from the problem of then still unclamping from the line cover.

For this reason, following machine line knotting method is behaved well-known, promptly, the line cover of the pin that falls before the most last pin two pins keeps long machine line not fastened by thread take-up tension lever, before being fastened, discharge from the line cover of the pin that falls of the last pin of the most last pin by thread take-up tension lever, fasten and the machine shuttle traction downwards of the most last needlework cover with the thread take-up tension lever of the line cover that utilizes the pin that falls before the most last pin one pin, the line cover that forms with the pin that falls of last pin is with the line cover before the most last pin two pins, and the line of introducing before the most last pin one pin overlaps the inboard.

Toe-in with this machine line knotting method formation, because the cover of the line before the most last pin one pin is fastened the line cover before the most last pin two pins, machine line terminal part after line cover before the most last pin two pins will cut off is fastened, so if the line cover of the machine line terminal part after cutting off before two pins extracted, line cover before one pin also can be kept the state of fastening, the machine line knotting that can be difficult for unclamping.

In addition, existing chain sitch sewing machine, in order to implement above-mentioned machine line knotting, have: be located at plane cam on the rotating shaft that is used for circling, be abutted against with the fitting projection of the plane cam that rotates and the arm that rotates, the downside that can be supported on needle plate rotationally and with the machine line of its leading section hauling machine line line cover the tie a knot a plurality of connecting rod bodies (for example, with reference to patent documentation 1) of parts of parts, armite and machine line of tiing a knot with the needed pin number of making of sewn object.

Above-mentioned machine line knotting parts utilize and rotate its leading section, can be from leaving the position of dodging of machine line, and be moved to hauling machine line line cover and the machine line length is kept than fastened the long machine line holding position of state by thread take-up tension lever.

And plane cam is formed: the moment of its fitting projection after the line cover of the pin that falls before the most last pin two pins is caught by the machine shuttle can connect with arm rest, and the moment before the line cover of the pin that falls before the most last pin one pin is fastened by thread take-up tension lever can be removed with arm rest and be connect state.

In addition, a plurality of connecting rod bodies of armite and machine line knotting parts, be joined into: the leading section of machine line knotting parts can be in and dodge the position under the non-mated condition of arm and plane cam, and the leading section of machine line knotting parts can be in machine line holding position under the mated condition of arm and plane cam.

According to the existing chain sitch sewing machine of this structure, before the line cover of the pin that falls before the most last pin two pins is fastened by thread take-up tension lever, the fitting projection of plane cam cooperates with arm and makes the leading section of machine line knotting parts advance to machine line holding position, removes before the line cover of the pin that falls before the most last pin one pin is fastened by thread take-up tension lever and the cooperating and make the tie a knot leading section of parts of machine line retreat into and dodge the position of arm.

With this, can carry out the above-mentioned machine line knotting that is not easy to unclamp.

Patent documentation 1: the spy opens bulletin flat 9-290081 number

Above-mentioned existing chain sitch sewing machine is not limited to nail catcher, for example, also is used to follow closely label.Because this label is removed from cloth after its effect of performance mostly, so compare with the above-mentioned machine line that is not easy to unclamp knotting, the machine line that unclamps the easily knotting that hope was carried out is in the past made.

But, on above-mentioned existing chain sitch sewing machine, in order to carry out the machine line knotting of unclamping easily, must remove and constitute the protruding part that is fixed in the fitting projection on the plane cam by spiral shell surely, so that machine line knotting parts can not rotate, exist the very loaded down with trivial details shortcoming of conversion operations of machine line knotting method.

In addition, because the configuration of protruding part, the rotation time of machine line knotting parts is had very big influence, must carry out position adjustments accurately when fitting operation once more, it makes more loaded down with trivial detailsization of conversion operations of machine line knotting method.

Summary of the invention

The present invention, its purpose is the conversion process of the machine line knotting that can unclamp easily and the machine line knotting that is not easy to unclamp, and can easily carry out this operation.

And its purpose also is to be configured for the structure of this conversion simply.

Invention 1 relates to a kind of chain sitch sewing machine, have: the eedle 11 that moves up and down, rotary machine shuttle 13 with eedle co-operating formation chain-type stitch, machine line knotting cam 32 with cam part, has the butting section 71 of being abutted against with the cam part of above-mentioned machine line knotting cam, 71A, 71B, 71C, 71D, 71E, and utilizing being abutted against of this butting section and above-mentioned cam part can be that the center is swingingly by the swing mechanism of pivotal support with the spindle unit, be connected with the swing position of above-mentioned swing mechanism and move back and forth, the machine line holding member 63 of the first machine line line cover that the fall pin of maintenance before by two pins of the most last pin forms, above-mentioned machine line holding member makes the machine line length of above-mentioned first machine line line cover longer than common sewing on its machine line holding position, in falling during pin of the most last pin, before being drawn to sewn object, the second machine line line cover after above-mentioned first machine line line cover moves the above-mentioned first machine line line cover of release from above-mentioned machine line holding position, put and form toe-in and the above-mentioned first machine line line cover is wrapped in the second machine line line with the 3rd machine line line cover that the pin that fallen by the most last pin forms, this chain sitch sewing machine possesses the above-mentioned machine line holding member of conversion to the execution of machine line knotting and the switching mechanism 70 of non-execution, 70A, 70B, 70C, this switching mechanism, have: utilize the position conversion of executing location and non-executing location and change the execution of above-mentioned machine line knotting and the switching motion parts 73 of non-execution, 73A, 73B, 73C, 81D, 81E, 81F, 81G, 81H, utilize pushing force these switching motion parts to be maintained at the elastomer 75 of above-mentioned executing location or non-executing location, 75A, 75B, 75C, 82D, 82E, 82F, overcome above-mentioned elastic force above-mentioned switching motion parts are transformed in above-mentioned executing location or non-executing location, and the execution that can select to have or not above-mentioned toe-in to form.

Invention 2, except with the invention 1 described identical structure, possess: utilize the position conversion of executing location and non-executing location and change the execution of above-mentioned machine line knotting and the switching motion parts 73 of non-execution, 73A, 73B, 73C, 81D, 81E, 81F, 81G, 81H, with utilize pushing force these switching motion parts to be maintained at the elastomer 75 of above-mentioned executing location or non-executing location, 75A, 75B, 75C, 82D, 82E, 82F, by overcoming above-mentioned elastic force above-mentioned switching motion parts are transformed in above-mentioned executing location or non-executing location, and can select to have or not the execution of above-mentioned toe-in formation.

Invention 3, except with invention 2 described identical structures, above-mentioned switching mechanism is provided with: with above-mentioned spindle unit be binding action component 72,72A, 72B, 72C, 72D, the 72E of center swing and have the above-mentioned switching motion parts of above-mentioned butting section and the above-mentioned executing location that can be abutted against with above-mentioned cam part in above-mentioned butting section and the above-mentioned non-executing location that can not be abutted against with lockable mechanism 74,74A, 74B, the 74C of above-mentioned switching motion parts with respect to the chimeric locking of above-mentioned binding action component.

Invention 4, except with invention 2 described identical structures, it is characterized in that: the cam part of above-mentioned machine line knotting cam can be adjusted the position along the periphery of above-mentioned machine line knotting cam.

Invention 5, except with the invention 2 described identical structures, the above-mentioned switching motion parts of above-mentioned switching mechanism, from the haunting of the outer peripheral face of above-mentioned machine line knotting cam, can change remaining in making above-mentioned executing location that above-mentioned swing mechanism swings and the above-mentioned non-executing location that above-mentioned swing mechanism is swung by above-mentioned cam part.

(invention effect)

Invention 1, owing to possess machine line holding member, so the time can overcome in knotting the first machine line line cover (the line cover of the pin that falls before two pins of last pin) is kept long line length to the traction of sewn object side, and owing to can before the sewn object side-lining, discharge the second machine line line cover, and the inboard that can be drawn to second machine line line cover with the end that the 3rd machine line line cover overlaps the first machine line line is fastened, and can easily form the firm toe-in that does not unclamp so only the end of machine line just need be extracted from a line cover.

In addition, owing to do not need the replacing operation of part,, can promptly carry out conversion process very faster and easily so when the conversion of toe-in, do not need the fine setting operation of part assembling position.

With this, though will make operation make thing when button changes to label, as long as carry out above-mentioned conversion process, can realize the raising of the operating efficiency of leap.

Invention 2, because when carrying out the conversion of firm knot and the execution of toe-in usually, as long as overcome elastomeric elastic force the switching motion that the switching motion parts are transformed in executing location and non-executing location can be finished, so can be very fast and easily carry out this conversion process rapidly.

In invention 3, because the switching motion parts that possess the butting section with operation only just can carry out the conversion of executing location and non-executing location, needn't the whole switching mechanism of conversion operations, so can carry out conversion operations swimmingly.

In invention 4,,, also can carry out the knotting of machine line constantly with action accurately even to handle the needle at a high speed owing to can regulate the position of the action cam part constantly of decision machine line holding member.

In invention 5,, do not need the whole machine line knotting of conversion operations cam, so can carry out conversion operations swimmingly owing to can utilize the operation of haunting of cam part to carry out the conversion of executing location and non-executing location.

Description of drawings

Fig. 1 is the chain sitch sewing machine side view of first embodiment of the invention.

Fig. 2 is the stereogram of chain sitch sewing machine.

Fig. 3 be chain sitch sewing machine omission local stereogram.

Fig. 4 is the stereogram from the being seen chain sitch sewing machine of arrow F direction of Fig. 3.

Fig. 5 is the enlarged drawing that pin is counted governor motion and machine line knotting mechanism, is the action specification figure that the switching motion parts is transformed into the executing location state.

Fig. 6 is the enlarged drawing that pin is counted governor motion and machine line knotting mechanism, is the action specification figure that the switching motion parts is transformed into non-executing location state.

Fig. 7 (A) is the partial perspective view of button with maintaining body, and Fig. 7 (B) is the partial perspective view of label with maintaining body.

Fig. 8 is the exploded perspective view of machine line knotting mechanism.

Fig. 9 (A) is the front view of toe-in forming process, and Fig. 9 (B) is a stereogram.

Figure 10 (A) is the front view of the toe-in forming process of hookup 9, and Figure 10 (B) is a stereogram.

Figure 11 (A) is the front view of toe-in forming process of Figure 10 of continuing, and Figure 11 (B) is a stereogram.

Figure 12 (A) is the front view of toe-in forming process of Figure 11 of continuing, and Figure 12 (B) is a stereogram.

Figure 13 (A) is the front view of toe-in forming process of Figure 12 of continuing, and Figure 13 (B) is a stereogram.

Figure 14 (A) is the front view of toe-in forming process of Figure 13 of continuing, and Figure 14 (B) is a stereogram.

Figure 15 (A) is the front view of toe-in forming process of Figure 14 of continuing, and Figure 15 (B) is a stereogram.

Figure 16 (A) is the front view of toe-in forming process of Figure 15 of continuing, and Figure 16 (B) is a stereogram.

Figure 17 (A) is the front view of toe-in forming process of Figure 16 of continuing, and Figure 17 (B) is a stereogram.

Figure 18 is the front view of the state that is formed of toe-in.

Figure 19 is the stereogram of second other swing mechanisms of embodiment.

Figure 20 is the exploded perspective view of the second embodiment swing mechanism.

Figure 21 is the switching motion key diagram of the second embodiment swing mechanism.

Figure 22 is the stereogram of the 3rd embodiment swing mechanism.

Figure 23 is the exploded perspective view of the 3rd embodiment swing mechanism.

Figure 24 is the switching motion key diagram of the 3rd embodiment swing mechanism.

Figure 25 is the stereogram of the 4th embodiment swing mechanism.

Figure 26 is the exploded perspective view of the 4th embodiment swing mechanism.

Figure 27 is the stereogram at the main position of the 5th embodiment machine line knotting mechanism.

Figure 28 is the exploded perspective view at the main position of the 5th embodiment machine line knotting mechanism.

Figure 29 is along the sectional view of the V-V line of Figure 28 and along the sectional view of the W-W line of Figure 32.

Figure 30 is the switching motion key diagram that possesses the switching mechanism of the 5th embodiment machine line knotting mechanism.

Figure 31 is the stereogram at the main position of the 6th embodiment machine line knotting mechanism.

Figure 32 is the exploded perspective view at the main position of the 6th embodiment machine line knotting mechanism.

Figure 33 is the switching motion key diagram of the switching mechanism of the 6th embodiment machine line knotting mechanism to executing location.

Figure 34 is the switching motion key diagram of the switching mechanism of the 6th embodiment machine line knotting mechanism to non-executing location.

Figure 35 is the stereogram at the main position of the 7th embodiment machine line knotting mechanism.

Figure 36 is the exploded perspective view of the switching mechanism that possesses of the 7th embodiment machine line knotting mechanism.

Figure 37 is the switching motion key diagram of the switching mechanism that possesses of the 7th embodiment machine line knotting mechanism.

Figure 38 is the exploded perspective view at the main position of the 8th embodiment switching mechanism.

Figure 39 is the amplification stereogram at the main position of the 8th embodiment switching mechanism.

Figure 40 is the switching motion key diagram in execution machine line when knotting of the 8th embodiment switching mechanism.

Switching motion key diagram when Figure 41 is the non-execution machine line knotting of the 8th embodiment switching mechanism.

Figure 42 is the exploded perspective view at the main position of the 9th embodiment switching mechanism.

Figure 43 is the switching motion key diagram in execution machine line when knotting of the 9th embodiment switching mechanism.

Figure 44 is the switching motion key diagram in execution machine line when knotting of the 9th embodiment switching mechanism.

Switching motion key diagram when Figure 45 is the non-execution machine line knotting of the 9th embodiment switching mechanism.

Switching motion key diagram when Figure 46 is the non-execution machine line knotting of the 9th embodiment switching mechanism.

Among the figure: the 11-eedle, the 12-needle plate, 13-machine shuttle, the 14-thread-carrier, the 20-frame, the 30-pin is counted governor motion, the 31-deboost axle, 32-plane cam (machine line knotting cam), 60,60D, 60E, 60F, 60G-machine line knotting mechanism, 61,61F-cam part (cam part), the 62-spindle unit, 63-machine line holding member, 64, the 64E-connect mechanism, 70,70A, 70B, 70C-swing mechanism (switching mechanism), 70D, the 70E-swing mechanism, 71,71A, 71B, 71C, 71D, the 71E-butting section, 72,72A, 72B, 72C, 72D, 72E-links action component, 73,73A, 73B, 73C, 81D, 81E, 81F, 81G, 81H-switching motion parts, 74,74A, 74B, the 74C-lockable mechanism, 72a-first cooperates protuberance, 72b-second cooperates protuberance, 73a-first cooperating recesses, 73b-second cooperating recesses, 75,75A, 75B, 75C, 82D, 82E, 82F-pushes spring (elastomer), 80D, 80E, 80F, 80G, 80H-switching mechanism, 83A, 84A, 83C, 84C, 83D, 84D, 83E, 84E, 83F, 84F-mating holes portion, 83G, the 84G-peristome, 83H, 84H-first maintaining part, 85A, 85C, 85D, 86D, 85E, 86E, 85F, 86F-slit portion, the 100-chain sitch sewing machine, B-button (making thing), L-label (making thing).

The specific embodiment

(all structures of first embodiment)

Below, the chain sitch sewing machine 100 of first embodiment of the invention is described with reference to Fig. 1～Fig. 8.Fig. 1 is the side view of chain sitch sewing machine 100, and Fig. 2 is a stereogram, and Fig. 3 omits local stereogram.

Chain sitch sewing machine 100 has: the frame 20 of taking in or keep each structure of Sewing machines, not shown electrical motor of sewing machine as each structure drive source, to pass to the not shown main shaft of each structure from the output torque of electrical motor of sewing machine, conversion is from the clutch 25 of electrical motor of sewing machine to the connection and the cut-out of the transmission of power of main shaft, the eedle up-down mechanism 35 that eedle 11 is moved up and down, have with eedle 11 co-operatings and form the not shown machine shuttle mechanism of the rotary machine shuttle 13 (with reference to Fig. 9) of chain-type stitch, make the thread-carrier 14 (with reference to Fig. 9) of the eedle that the line cover of the machine line that is formed by machine shuttle 13 avoids descending, keep being sewn on sewn object and be the maintaining body of making thing 40 (45) on the cloth, decision eedle and the travel mechanism 50 of making the thing relative position when making, be used to set and make thing and make the pin of required pin number and count governor motion 30, carry out the machine line knotting mechanism 60 of machine line knotting after making, carry out the not shown tangent mechanism of tangent line after the knotting of machine line.

(frame)

Frame 20, as shown in Figures 1 and 2, its integral body is formed approximate " コ " word shape, has: constitute its underpart Sewing machines base plate 21, from the upright vertical main body section 22 that is provided with in an end of Sewing machines base plate 21, from vertical main body section 22 to the transverse arm portion 23 of extending with Sewing machines base plate 21 equidirectionals.

In addition, in the following description, with the length direction of Sewing machines base plate 21 as Y direction, will be vertical with Y direction and direction that eedle 11 moves up and down as Z-direction, direction that will be vertical with Y direction and Z-direction is as X-direction.

(binding of each)

In Sewing machines base plate 21, dispose main shaft revolvably, can be rotated driving by clutch from electrical motor of sewing machine along X-direction.

In addition, at the Sewing machines base plate interior along the Y direction shuttle axle of configuration machine shuttle mechanism revolvably, and can from main shaft by helical gear with main shaft mutually uniform velocity be rotated driving.

In addition, the Sewing machines base plate interior along X-direction revolvably configuration pin count the deboost axle 31 of governor motion 30, and be installed in the shuttle axle vertical main body section 22 side ends the turbine gear with the regulation speed reducing ratio apply rotary driving force.

In addition, also disposed the couple axle 34 that makes pin count governor motion 30 and clutch interlock revolvably along X-direction at the Sewing machines base plate interior.

(pin is counted governor motion)

Fig. 4 is the stereogram from the being seen chain sitch sewing machine 100 of arrow F direction of Fig. 3, only shows the pin of being located at Sewing machines base plate 21 and counts governor motion 30 and machine line knotting mechanism 60.In addition, Fig. 5 and Fig. 6 are the amplification stereograms that pin is counted governor motion 30 and machine line knotting mechanism 60.

As shown in these figures, pin is counted governor motion 30, has: be installed in the not shown turbine gear on the shuttle axle, possess with the spur gear of turbine gears engaged and be rotated the above-mentioned deboost axle 31 of driving with respect to main shaft with the speed reducing ratio of regulation, an end approximate that is arranged on deboost axle 31 is discoideus plane cam 32 (with reference to Fig. 4～Fig. 7), be used to realize couple axle 34 with clutch 25 interlocks, radicle is fixedly supported to an end of couple axle 34 and the regulating arm 33 that the swing end cooperates with the periphery of plane cam 32, push the not shown spring of regulating arm 33 to the periphery of plane cam 32.

Above-mentioned pin is counted the turbine gear of governor motion 30 and the spur gear of deboost axle, can be replaced by tooth pitch other gears different with the number of teeth, can regulate the speed reducing ratio of deboost axle with this.Deboost axle 31 can suitably be selected according to the pin number that is used to make thing.For example, making thing is the button with four through wires holes, because per two holes add up to the pin number that needs 24 pins when making with the pin number of 12 pins, is 24 turbine gear and spur gear so use speed reducing ratio.Same in addition, be label when making thing, and to use speed reducing ratio when making with 10 pins be 10 turbine gear and spur gear.

That is, deboost axle 31 can be to be rotated driving with respect to main shaft by the speed reducing ratio of selecting gear to set.

Plane cam 32, being fixed to remain on the deboost axle 31 also therewith is rotated, and its shape is roughly circle and has formed recess 32a in the part of its periphery.

Regulating arm 33, being fixed remains on the couple axle 34 and is that swing at the center with this couple axle 34.In addition, regulating arm 33, its swing end is crushed on the periphery of plane cam 32, just swings to the central side of plane cam 32 when inserting the recess 32a of plane cam 32.

The recess 32a of plane cam 32 to make the needed a series of pin numbers of making of thing and is provided with in order to calculate, and according to this counting, carries out temporarily stopping of handling the needle, tangent line, the knotting of machine line etc.

For example, when carrying out the making of above-mentioned four hole buttons owing to will carry out two subtangents, so recess 32a is arranged on the diametric(al) both ends of plane cam 32 peripheries.In addition, under the occasion of label, so only establish a recess 32a owing to only carry out a subtangent.

(clutch)

Clutch 25, as Fig. 1～shown in Figure 3, be to count governor motion 30 interlocks and conversion and the mechanism that the driving force of machine spindle is connected and cuts off, have: be sewed driving pulley 26 that dynamo-electric machine drives by not shown synchronous band rotation, can contact contact that swings up and down conversion and driven pulley 27 with the driven pulley 27 that separates, with leading section and the selector bar 28 that separates, prevention are transformed into the driven pulley 27 that the released state inertia rotates from contact condition brake linkage 29 with driving pulley 26 with the pin that calculating is set the pin number.

Above-mentioned selector bar 28 and brake linkage 29 be integrally by couple axle 34 fixed supports, and be that swing at the center with couple axle 34.

Selector bar 28, utilization are that the swing at center is transformed in position and upper/lower positions with its swing end with couple axle 34, when being in position (illustrated state) driving pulley 26 are pressed to driven pulley 27 sides, and remove the pushing state at upper/lower positions.As mentioned above, on couple axle 34, link, when the recess 32a engagement of regulating arm 33 and plane cam 32, selector bar 28 is transformed into upper/lower positions, when selector bar 28 being transformed into the position when recess 32a breaks away from regulating arm 33.

That is, when the recess 32a of regulating arm 33 and plane cam 32 engagement, be cut off, when regulating arm 33 can carry out transmission of power when recess 32a breaks away from from the transmission of power of driving pulley to driven pulley.

It is that the swing at center moves up and down that brake linkage 29, its swing end utilize with couple axle 34, and be can utilize the outer peripheral face sliding-contact of decline and driven pulley 27 by pivotal support.

Driven pulley 27 is fixedly supported on the main shaft, transmits the power that comes from driving pulley 26 and is delivered to main shaft by driven pulley 27.

In addition, formed fitting portion, in case the leading section of the fitting portion of the driven pulley 27 that is rotated and brake linkage 29 engagement then driven pulley 27 is played braking action at the assigned position of driven pulley 27 peripheries.

In addition, above-mentioned selector bar 28 and brake linkage 29, each swing end by the startup pedal operated artificially by swinging operation upward.That is because when electrical motor of sewing machine starts, the leading section of regulating arm 33 that pin is counted governor motion 30 with the state of the recess 32a that keeps being embedded in plane cam 32 not to the main shaft transferring power, so utilize the driving pedal to transmit artificially.

In case carry out transmission of power, then owing to also beginning to rotate by machine shuttle axle deboost axle, so even pin leaves from starting pedal, regulating arm 33 is also kept the state that breaks away from from the recess 32a of plane cam 32 from main shaft to main shaft.

And, when main shaft has carried out setting the rotation of pin quantity, so owing to regulating arm 33 has cut off from the transmission of power of driving pulley 26 to driven pulley 27 with the recess 32a of plane cam 32 is chimeric once more.In addition, though driven pulley 27 carries out inertia rotation, mesh with this leading section when the fitting portion of its periphery has inserted the leading section of brake linkage 29, brake force works and the inertia that stopped driven pulley 27 and main shaft is rotated.

(eedle up-down mechanism)

Eedle up-down mechanism 35 has: along the not shown connecting rod that is disposed at up and down in the vertical main body section 22 and link by eccentric cam bottom and main shaft, keep eedle 11 and the leading section of transverse arm portion 23 can move up and down supported shank 36, the portion of transverse arm portion 23 can be swingingly supported swing arm 37.

One end of the upper end of connecting rod and swing arm 37 links, and the other end of swing arm 37 is only to transmit state and shank 36 bindings because of the displacement that moves up and down of its swing.Therefore, the driving force that moves up and down of the connecting rod that moves up and down synchronously by eccentric cam and main shaft is delivered to shank 36 by swing arm 37, and eedle 11 moves up and down synchronously with the rotation of main shaft.

(machine shuttle mechanism and thread-carrier)

The machine shuttle mechanism has: the machine shuttle 13 that the downside of above-mentioned shuttle axle, the needle plate 12 on be located at Sewing machines base plate 21 front ends is supported by the shuttle axle.

Machine shuttle 13 has the sharp-pointed wedge angle that is used for catching from the eedle 11 that drops to needle plate 12 belows the machine line, catches the machine line when the wedge angle that utilizes the shuttle axle to carry out the full rotation circular motion is positioned at the top position, and by moving downwards machine line line cover is elongated downwards.Then, when wedge angle once more towards the top, when the eedle 11 that descended has afterwards been caught the machine line, discharge previous machine line line cover so that line cover is afterwards put around this line from wedge angle, repeat this action and sew to carry out single line chain type.

Thread-carrier 14 is arranged between needle plate 12 and the machine shuttle 13, utilization is located at two cams on the shuttle axle and is handled the needle each time and move with describing triangular trajectory, and carrying out the machine line line cover that will be caught by machine shuttle 13 can be not and drawing by moving that the eedle that descends because of handle the needle is next time interfered.

(maintaining body)

Keep making the maintaining body 40 (45) of thing, as shown in Figures 1 and 2, it extends along Y direction on Sewing machines base plate 21, is supported on the Sewing machines base plate 21 and its leading section can freely move along X-Y plane.

In addition, maintaining body 40 (45) as shown in Figure 7, has used its different mechanism of leading section structure according to the kind of making thing.

That is, with button B when making thing, shown in Fig. 7 (A), used to possess a pair of gripper jaw 41,41 that extends towards front and with the maintaining body 40 of this gripper jaw 41,41 to the not shown spring of approaching mutually direction pushing.Button B is carried out maintenance with the state that is held in each gripper jaw 41,41.

In addition, with label L when making thing, shown in Fig. 7 (B), used to possess the tabular framework 46 of extending, the maintaining body 45 of pushing down the locking pawl 47 of the label L that is located at the frame inside part towards front.

(travel mechanism)

Travel mechanism 50, as shown in Figure 3, it has: be fixedly supported on not shown on the above-mentioned deboost axle 31 move forward and backward with grooved cam, be fixedly supported on not shown move left and right on the deboost axle 31 apply to the base plate 40 of maintaining body 40 with grooved cam, by the pin that cooperates with the cam path that moves forward and backward with grooved cam Y direction locomotivity move forward and backward move left and right from the pin that cooperates with the cam path of grooved cam with move left and right to the base plate 40 of maintaining body 40 that apply the X-direction locomotivity with transmission mechanism 51, by with transmission mechanism 52.

Move forward and backward with grooved cam and move left and right grooved cam, all be discoideus and on its side face, formed groove.State with the pin that inserted each transmission mechanism in each groove respectively cooperates, and each cam is decelerated the axle rotation and drives, to give displacement to X-direction according to groove shape to each pin.

Move forward and backward with transmission mechanism 51, mainly by being constituted by the cursor or the connecting rod body of pivotal support on Sewing machines base plate 21, pin will move the mobile displacement of accepting with grooved cam to X-direction from front and back and convert to the mobile displacement of Y direction and pass to maintaining body 40 (45).

In addition, move left and right transmission mechanism 52, also mainly by being constituted by the cursor or the connecting rod body of pivotal support on Sewing machines base plate 21, pin will pass to maintaining body 40 (45) from the mobile displacement to X-direction that move left and right is accepted with grooved cam.

That is, travel mechanism 50, according to the groove shape of each cam, the decision maintaining body 40 (45) of at every turn handling the needle with this, can carry out the pin that falls of eedle 11 in the shift position of X-direction and Y direction at the assigned position of making thing that is held mechanism's 40 (45) maintenances.

In addition, as mentioned above, deboost axle moves forward and backward with grooved cam and move left and right grooved cam owing to can carry out transmission of power during making the handling the needle of the required pin number of making of thing with circling, has all formed to be used to make the groove that required full pin number moves.

In addition, the mode of handling the needle different handle the needle the time or make needed pin number not simultaneously, need to change formed with the cam path of its adaptation other each move and use grooved cam.

(tangent mechanism)

Tangent mechanism has: be arranged on fixed cutting tool 16 and the movable cutting knife 15 (with reference to Figure 17) between needle plate 12 and the machine shuttle 13, the transmission mechanism that transmits the power that moves from movable cutting knife 15 cut-outs of main shaft, the connection of conversion transmission mechanism transmission of power and the switching mechanism of cut-out.

Above-mentioned switching mechanism, utilize being rotationally connected of regulating arm 33 that pin counts governor motion 30 couple axle 34 when chimeric from the transmission of power of main shaft to movable cutting knife 15 with the recess 32a of plane cam 32, utilization is fitted to that driven pulley 27 carries out that inertia is rotated and by the driving force that the main shaft about till brake linkage 29 brakings changes from the recess 32a of regulating arm 33 and plane cam 32, makes movable cutting knife 15 carry out reciprocating action and cuts off at the terminal part of machine line.

(machine line knotting mechanism)

Fig. 8 is the exploded perspective view of machine line knotting mechanism 60.

As Fig. 4～Fig. 6 and shown in Figure 8, machine line knotting mechanism 60, have: as the plane cam 32 that will have as the knotting cam of the cam part 61 of cam part, has the butting section 71 of being abutted against with cam part 61, and utilizing being abutted against of this butting section 71 and cam part 61 can be that the center is swingingly by the swing mechanism 70 of pivotal support with spindle unit 62, below needle plate 12,, and utilize to rotate and keep from the most last pin machine line maintaining part 63 that first line that pin forms overlaps that falls before by two pins by reciprocal rotational support, link the swing position of swing mechanism 70 and the connect mechanism 64 of machine line maintaining part 63.

And above-mentioned swing mechanism 70 has the function of conversion by the switching mechanism of knotting of the execution machine line of machine line maintaining part 63 and the knotting of non-execution machine line.

Above-mentioned machine line maintaining part 63, have with the narration of detailed description of the invention of opening flat 9-290081 communique the spy in the roughly the same structure of parts that illustrates as " machine line knotting plate ", be in making, to carry out identical action, and realize the parts of same function effect with the identical moment.

Promptly, machine line maintaining part 63, be set between each cutting knife 15,16 of needle plate 12 and tangent mechanism (with reference to Figure 17 (A), (B)), its radicle can be rotationally by pivotal support on the Sewing machines base plate, link and keep the first line cover that forms from the pin that falls of the most last pin before with swing mechanism 70 by two pins.

And, its pivoting end has utilization can catch the machine line and utilize the claw-like portion that rotates (retreating rotations) energy machine for releasing line round about to a side rotation (rotation of advancing), and be configured to this pivoting end rotary motion trace can by eedle move up and down passage near.In addition, will utilize the above-mentioned rotation of advancing to catch the machine line holding position of the position of machine line as machine line maintaining part 63.

The plane cam 32 that above-mentioned pin is counted governor motion 30 possesses the function that back and forth drives the machine line knotting cam of above-mentioned machine line maintaining part 63 with the moment of regulation.That is, plane cam 32 is the circular external cams that are fixedly supported on the deboost axle 31, has equipped the cam part 61 that has towards the outstanding projection in its radial direction outside.

In addition, the recess 32a of above-mentioned plane cam 32 is formed on the position that can cooperate with regulating arm 33 but can not cooperate with the butting section 71 of swing mechanism 70, and the projection of cam part 61 is set to cooperate with butting section 71 but the configuration that can not cooperate with regulating arm 33.

In addition, plane cam 32 is abutted against along distance deboost axle 31 equidistant circular circumference and butting section 71 with external enwergy except the bossing of cam part 61.

Cam part 61 is fixed on the plane cam 32 by screw by circular-arc slotted hole, utilizes the operation screw to install along the periphery running fix ground of plane cam 32.With this, be abutted against the time (angle of deboost axle) of cam part 61 and butting section 71 in the time of can being adjusted in plane cam 32 and rotating.

Connect mechanism 64 is made of a plurality of connecting rod bodies that linked swing mechanism 70 and machine line maintaining part 63.

That is, an end of connect mechanism 64 is linked to the position of swinging of being abutted against of the cam part 61 that utilizes swing mechanism 70 and butting section 71, and the other end is linked near the fulcrum of machine line maintaining part 63.

And, connect mechanism 64, realized the binding of swing mechanism 70 with machine line maintaining part 63, so that machine line maintaining part 63 rotation direction of marching forward is rotated, the rotation that utilizes plane cam 32 at cam part 61 makes machine line maintaining part 63 rotation direction of drawing back rotate when the direction of returning the origin-location is rotated by butting section 71 and this butting section 71.

Swing mechanism 70, have: be the binding action component 72 of center swing with spindle unit 62, have butting section 71 and be the switching motion parts 73 that swing at the center with spindle unit 62 with the state overlapping with linking action component 72, be arranged on two action components 72, between 73, make switching motion parts 73 be positioned at the executing location that to be abutted against with cam part 61 butting section 71 and non-executing location ground that can not be abutted against and the lockable mechanism 74 that links action component 72 chimeric lockings, as keeping with elastic force and the executing location of switching motion parts 73 or the elastomeric pushing spring 75 of the chimeric lockup state of non-executing location.

Promptly, in above-mentioned executing location, utilize cam part 61 to be abutted against with butting section 71, binding action component 72 and switching motion parts 73 can be swung when this is abutted against, and can machine line holding member 63 be advanced by connect mechanism and rotate and the knotting of the machine of execution line, in above-mentioned non-executing location, because cam part 61 can not be abutted against with butting section 71, machine line holding member 63 does not carry out wobbling action fully, can not carry out the knotting of machine line.

Link action component 72 by spindle unit 62 pivotal support along X-direction, be configured in Sewing machines base plate 21 the side and with plane cam 32 adjacency.

This links action component 72, on the swing position of leaving from spindle unit 62, with the end binding of above-mentioned connect mechanism 64.

And this links action component 72, has first and second protuberance 72a, the 72b of a part that constitutes lockable mechanism 74.In addition, linking on the action component 72, the extension spring 76 of binding action component 72 being exerted pressure to the rotation direction of butting section 71 pushing contact plate cams, 32 peripheries of the switching motion parts 73 that link with this bindings action component 72 has been installed.

Switching motion parts 73 by spindle unit 62 pivotal support, have butting section 71 with the state overlapping with linking action component 72.And these switching motion parts 73 possess first and second recess 73a, the 73b of approximate " コ " word shape of a part that constitutes lockable mechanism 74.

Each cooperating recesses 73a, 73b, all towards linking action component 72 openings, and so that switching motion parts 73 and binding action component 72 overlapping modes either party cooperating recesses 73a, 73b can be embedded in a side cooperate protuberance 72a, 72b.In addition, switching motion parts 73 and link action component 72 under the chimeric state of any cooperating recesses 73a, 73b and any protuberance 72a, 72b, can rotate integratedly.

In addition, first cooperates protuberance 72a, second cooperates protuberance 72b, the first cooperating recesses 73a, the relative configuration of the second cooperating recesses 73b is set to: cooperate under the chimeric state of protuberance 72a and the first cooperating recesses 73a first, as shown in Figure 5, the butting section 71 of switching motion parts 73 is positioned at the position (executing location) of abutment plate cam 32 peripheries, cooperate under the chimeric state of protuberance 72b and the second cooperating recesses 73b second, as shown in Figure 6, the butting section 71 of switching motion parts 73 is positioned at from plane cam 32 and leaves and cam part 61 inaccessible positions (non-executing location).

And, as mentioned above, on binding action component 72, installed the extension spring 76 of butting section 71 pushing contacts on the periphery of plane cam 32, be positioned under the state of executing location but be provided with at above-mentioned switching motion parts 73, the not shown block that surpasses predetermined distance can not be rotated to the darker side of plane cam 32 peripheries (deboost axle side) in butting section 71.With this, in non-executing location, the position that does not reach cam part 61 front ends can be kept in butting section 71.

In addition, on switching motion parts 73, also be arranged side by side to linking the pushing spring 75 that action component 72 thrusters are pressed.With this, the cooperating recesses 73a or the 73b of switching motion parts 73, can keep with link action component 72 cooperate protuberance 72a or the chimeric state of 72b.

In addition, when carrying out the conversion of executing location and non-executing location, utilize manual operation to overcome pushing spring 75 switching motion parts 73 are drawn back from linking action component 72, make its rotation so that utilize pushing spring 75 chimeric with carrying out the position conversion, and keep this state.

(action specification of chain sitch sewing machine)

Below, carry out the action specification of the chain sitch sewing machine 100 that constitutes by said structure.At first, with button when making thing and make, with maintaining body 40 be installed in Sewing machines base plate 21 above, between its a pair of gripper jaw 41 clamping button, between maintaining body 40 and needle plate 12, settle the cloth C that is made.

In addition,, overcome pushing spring 75 and draw switching motion parts 73, the first cooperating recesses 73a is cooperated protuberance 72a aligned in position with first and return to link action component 72 sides in order to carry out the execution of firm machine line knotting.With this, the butting section 71 of switching motion parts 73 is positioned at executing location, is abutted against with plane cam 32 peripheries.

Then, when the driving of beginning electrical motor of sewing machine, when trampling the startup pedal, regulating arm 33 breaks away from from the recess 32a of plane cam 32, utilizes the rotation of the couple axle 34 that accompanies with it, and selector bar 28 and brake linkage 29 rotate upward and transmit rotary driving force to main shaft, shuttle axle, deboost axle 31.Therefore, what button B stipulated moving and handling the needle, and forms stitching successively by machine shuttle 13.

Then, before two pins of the most last pin of setting the pin number, fall pin later on when eedle 11 is positioned at the preceding needle downing position (illustrating the buttonhole on right side) of a pin of the most last pin from the state (Fig. 9) that rises to eedle 11, be abutted against with butting section 71 and swing mechanism 70 is rotated to the cam part 61 of the plane cam 32 of direction of arrow rotation, make machine line maintaining part 63 rotation of advancing by connect mechanism 64.With this, as shown in figure 10, the line cover L1 (first machine line line cover L1) that is formed by the pin that falls before two pins of the most last pin is hung in the leading section of machine line maintaining part 63, even also the line cover can be guaranteed to be certain length by not shown well-known thread take-up tension lever to the cloth side-lining.

Then, carry out the pin that falls before the pin of the most last pin, machine shuttle 13 begins to catch with this machine line L, first line cover L1 that the pin that falls before one-sided (illustrated left side) is by two pins of the most last pin forms is stirred in the bottom of thread-carrier 14 slave line holding members 63, machine line holding member 63 keeps first line cover L1 (Figure 11) and makes machine line L bending in the position of regulation, and keeps forming the machine line length of first line cover L1 than common machine line length.Then, eedle 11 rises, and thread-carrier 14 leaves from line cover L1, and machine shuttle 13 is caught machine line L and twined by the pin that falls before the pin of the most last pin with first line cover L1 and forms line cover L2 (second line cover L2), first line cover L1 detachment machine shuttle 13, eedle 11 risings (Figure 12).

At this moment, the most last pin pin that on the buttonhole identical, begins to fall with the buttonhole of the pin that falls before the pin, thread-carrier 14 relies on one-sided (illustrated left side) with second line cover L2, and machine shuttle 13 begins to catch machine line L (Figure 13).

Then, machine shuttle 13 begins machine line L is wound in second line cover L2, and thread-carrier 14 leaves (Figure 14) from second line cover L2.Subsequently, machine line holding member 63 is being drawn forward release second line cover L2 to cloth C.With this, formed line cover L3 (three-way cover L3) that the pin that falls with the most last pin that is wound in second line cover L2 forms (Figure 15).

Then, eedle 11 rises again, three-way cover L3 left behind (Figure 16).At this moment, as previously mentioned, because machine line holding member 63 is caught the single line of first line cover L1 and is overlapped L2 so that the state of machine line bending has formed second line, so the machine line length of second line cover L2 part is held than long in the past, can draws first line cover L1 and be wound in second line cover L2 (Figure 17) with three-way cover L3.

The three-way cover L3 of under this state, leaving behind, when three-way cover L3 by movable cutting knife 15, when fixed cutting tool 16 cuts off, can form the firm toe-in (Figure 18) that toe-in that toe-in part that first line cover L1 forms formed by second line cover L2 partly tightly wraps.

Then, regulating arm 33 is chimeric with the recess 32a of plane cam 32, utilizes the rotation of the couple axle 34 that accompanies with it, makes selector bar 28 and brake linkage 29 rotate and cut off rotary power to main shaft, shuttle axle, deboost axle 31 downwards.Then, when the driven pulley 27 of inertia rotation rotated to fitting portion, rotation was braked by brake linkage 29.

On the other hand, utilize the rotation of couple axle 34, transmit the driving force of reciprocal rotational action to the movable cutting knife 15 of tangent mechanism from main shaft, till the driven pulley 27 that inertia is rotated is braked during, an end of the most last needlework cover is cut off, and makes the end of job.

Carrying out with label L when making the making of thing, with maintaining body 45 be installed in Sewing machines base plate 21 above, label L is configured in the downside of locking pawl 47 in framework 46 inboards, between maintaining body 45 and needle plate 12, settle the cloth of being made.

Owing in making label L, do not carry out firm knotting,, the second cooperating recesses 73b cooperated protuberance 72b aligned in position with second and return to link action component 72 sides so overcome pushing spring 75 stretching switching motion parts 73.With this, the butting section 71 of switching motion parts 73 is positioned at non-executing location, leaves from plane cam 32 peripheries.

The action of subsequently Sewing machines is with to make button identical.But, because the butting section 71 of switching motion parts 73 is set at non-executing location, so the rotation of machine line maintaining part 63 does not stop, the line cover before two pins is not introduced into the line cover before the pin, has carried out the toe-in of untiing easily and finish to make operation after having carried out tangent line.

(effect of first embodiment)

Above-mentioned chain sitch sewing machine 100, when utilizing machine line knotting mechanism 60 to carry out firm knot and the execution of toe-in is changed usually, can finish the elastic force that overcomes pushing spring 75 with shirtsleeve operation and carry out switching motion parts 73 are transformed in the switching motion of executing location and non-executing location, so can be very fast and promptly carry out this conversion operations easily.

In addition, owing to do not need the replacing operation of part,, can promptly carry out this conversion operations very faster and easily so when the conversion toe-in, do not need the inching operation of part block position.

With this,,, can realize the raising of the operating efficiency of leap as long as carry out above-mentioned conversion even will make the making thing and between button B and label L, change of operation the time.

And, owing to can regulate the position adjustments of the cam part 61 of 63 actuation times of left and right sides machine line holding member, so even to handle the needle at a high speed, chien shih machine line holding member 63 actions and carry out the knotting of machine line in the time of also can be with precision maneuver.

(other)

In addition, realized that with same parts above-mentioned pin counts the generalization of the tie lines cam of the plane cam 32 of governor motion 30 and machine line knotting mechanism 60, but they also can be the independent cams that is fixedly installed in respectively on the couple axle 34.

(second embodiment)

As second embodiment, the same with above-mentioned swing mechanism 70, have example with reference to Figure 19～Figure 21 explanation as other swing mechanisms 70A of the switching mechanism function that can easily change the execution that has or not firm machine line knotting.Figure 19 is the stereogram of swing mechanism 70A, and Figure 20 is an exploded view, and Figure 21 is the switching motion key diagram.In addition, the difference of main explanation and chain sitch sewing machine, the structure identical with above-mentioned chain sitch sewing machine 100 used identical symbol and the repetitive description thereof will be omitted.

Swing mechanism 70A, have: with spindle unit 62 be center swing binding action component 72A, have butting section 71A switching motion parts 73A, be arranged between two action component 72A, the 73A, make switching motion parts 73A be positioned at the executing location that butting section 71A can be abutted against with cam part 61 and the non-executing location ground that can not be abutted against with the lockable mechanism 74A that links the chimeric locking of action component 72A, as keeping and the executing location of switching motion parts 73A or the elastomeric pushing spring 75A of the chimeric lockup state of non-executing location with elastic force.

Link action component 72A, its central portion is by spindle unit 62 pivotal support along X-direction, be configured in Sewing machines base plate 21 the side and with plane cam 32 adjacency.

This links action component 72A, on the swing position 81A that leaves from spindle unit 62, with the end binding of above-mentioned connect mechanism 64.

And this links action component 72A, has the extension 82A to plane cam 32 sides, on this extension 82A, has formed the 83A of first and second mating holes portion, the 84A of the part of the formation lockable mechanism 74A that arranges along its bearing of trend with breakthrough status.The 83A of these mating holes portions, 84A internal diameter equate, and are linked by the 85A of slit portion of the width narrower than these internal diameters.

In addition, link on action component 72A, the extension spring of binding action component 72A being exerted pressure to the rotation direction of butting section 71A pushing contact plate cam 32 peripheries of the switching motion parts 73A that links with this bindings action component 72A has been installed at this.

In addition, be provided with at switching motion parts 73A and be under the state of executing location, butting section 71A can not rotate the not shown block that surpasses predetermined distance to the darker side of plane cam 32 peripheries (deboost axle side).With this, in non-executing location, butting section 71A can keep the position that does not reach cam part 61 front ends.

Switching motion parts 73A has: axial region 91A, be fixedly installed in axial region 91A both ends head 92A, the 93A bigger than axial region 91A diameter.In addition, axial region 91A is inserted among above-mentioned mating holes 83A of portion or the 84A, and, to be inserted into the state of the butting section 71A that pushes spring 75A and cover tubular in head 93A side, switching motion parts 73A is installed on the binding action component 72A.

That is, between head 92A and 93A, switching motion parts 73A is installed on the binding action component 72A with extension 82A, the pushing spring 75A of clamping binding action component 72A and the state of butting section 71A.

In addition, the external diameter of axial region 91A is set to wideer than the 85A of slit portion, and can insert the size of the 83A of mating holes portion, 84A.

And, near the 92A of head midway of axial region 91A, form the minor diameter 94A that constitutes a lockable mechanism 74A part.The external diameter of this minor diameter 94A is set forr a short time than the width of the 85A of slit portion, and the thickness of slab of the ratio binding action component 72A that the width of minor diameter 94A is set is wide.

According to this structure, switching motion parts 73A is being installed under the state that links action component 72A, head 92A is in and is urged spring 75A and is crimped on the state that links on the action component 72A, has kept the 83A of mating holes portion or any the locational state of 84A of being arranged in.

In addition, as shown in figure 21, utilize manual operation to overcome pushing spring 75A head 92A stretched from linking action component 72A with leaving, with can be between 83A of mating holes portion and 84A with the mode of the minor diameter 94A insertion slit 85A of portion of axial region 91A mobile switching motion parts 73A.

In addition, the position of the 83A of mating holes portion is set to, and butting section 71A is positioned at the executing location that can be abutted against with the outer peripheral face of plane cam 32 when switching motion parts 73A is positioned at the 83A of mating holes portion.

In addition, the position of the 84A of mating holes portion is set to, and butting section 71A can be positioned at the non-executing location of leaving from the cam part 61 of plane cam 32 when switching motion parts 73A is positioned at the 84A of mating holes portion.

According to this structure, swing mechanism 70A can play and swing mechanism 70 action effect much at one.

(the 3rd embodiment)

As the 3rd embodiment, the same with above-mentioned swing mechanism 70, have example with reference to Figure 22～Figure 24 explanation as other swing mechanisms 70B of the switching mechanism function that can easily change the execution that has or not firm machine line knotting.Figure 22 is the stereogram of swing mechanism 70B, and Figure 23 is an exploded view, and Figure 24 is the switching motion key diagram.In addition, the difference of main explanation and chain sitch sewing machine, the structure identical with above-mentioned chain sitch sewing machine 100 used identical symbol and the repetitive description thereof will be omitted.

Swing mechanism 70B, have: with spindle unit 62 be center swing binding action component 72B, possess butting section 71B switching motion parts 73B, be arranged between two action component 72B, the 73B, make switching motion parts 73B be positioned at the executing location that butting section 71B can be abutted against with cam part 61 and the non-executing location ground that can not be abutted against with the lockable mechanism 74B that links the chimeric locking of action component 72B, as keeping and the executing location of switching motion parts 73B or the elastomeric pushing spring 75B of the chimeric lockup state of non-executing location with elastic force.

Link action component 72B, its central portion is by spindle unit 62 pivotal support along X-direction, be configured in Sewing machines base plate 21 the side and with plane cam 32 adjacency.

This links action component 72B, and the end with above-mentioned connect mechanism 64 on the swing position 81B that leaves from spindle unit 62 links.

And, this binding action component 72B has the extension 82B to plane cam 32 sides, leading section at this extension 82B is formed with the 83B of mating holes portion with breakthrough status, has formed on the inner peripheral surface of the 83B of mating holes portion from the front that links action component 72B to the slot part 84B at the back side.In addition, in the end opening side (front face side that links action component 72B) of the 83B of mating holes portion, to have formed recess 85B with slot part 84B equal widths and not reach the degree of depth that links the action component 72B back side.

In addition, the not shown extension spring of binding action component 72B being exerted pressure to the rotation direction of butting section 71B pushing contact plate cam 32 peripheries of the switching motion parts 73B that links with this bindings action component 72B is installed linking on the action component 72B.

In addition, be provided with at switching motion parts 73B and be under the state of executing location, butting section 71B can not rotate the not shown block that surpasses predetermined distance to the darker side of plane cam 32 peripheries (deboost axle side).With this, in non-executing location, butting section 71B can keep the position that does not reach cam part 61 front ends.

Switching motion parts 73B has: axial region 91B, be fixedly installed in axial region 91B both ends head 92B, the 93B bigger than axial region 91B diameter.In addition, axial region 91B is inserted among the above-mentioned mating holes 83B of portion, and, to be inserted into the state of the butting section 71B that pushes spring 75B and cover tubular in head 93B side, switching motion parts 73B is installed on the binding action component 72B.

That is, switching motion parts 73B is being installed on the binding action component 72B with the extension 82B that clips binding action component 72B, the state that pushes spring 75B and butting section 71B between head 92B and the 93B.

In addition, the external diameter of axial region 91B is set to the size that can insert the 83B of mating holes portion.

And, on the outer peripheral face of axial region 91B from the head the 92B side end form railway line protuberance 94B till the axial region 91B length direction centre position.

The width of this protuberance 94B is set narrowlyer than slot part 84B, when axial region 91B is inserted the mating holes 83B of portion, protuberance 94B is slided in slot part 84B.

That is, lockable mechanism 74B is made of the above-mentioned 83B of mating holes portion, slot part 84B, recess 85B and protuberance 94B.

According to this structure, switching motion parts 73B, its axial region 91B is inserted the mating holes 83B of portion and protuberance 94B is inserted state in the slot part 84B, be installed under the state that links on the action component 72B, head 92B keeps and is urged spring 75B and is crimped on the state that links on the action component 72B.That is, as shown in figure 22, axial region 91B is inserted into the bosom, becomes butting section 71B and is in state from extension 82B position farthest.

In addition, overcome pushing spring 75B and can pull out head 92B with leaving from the leading section of protuberance 94B, when rotating operation axial region 91B inserts recess 85B with the leading section of protuberance 94B, as shown in figure 24, axial region 91B can only be inserted into shallow place, is converted to butting section 71B apart from the nearest state of extension 82B.

In addition, carried out the length setting of axial region 91B, so that can be inserted into the bosom at axial region 91B, butting section 71B was in the executing location that can be abutted against with the periphery of plane cam 32 when butting section 71B was positioned at apart from farthest position of extension 82B.

In addition, carried out the length setting of protuberance 94B, so that can only be inserted into shallow place at axial region 91B, butting section 71B was in the non-executing location that can not arrive apart from the cam part 61 of plane cam 32 when butting section 71B was positioned at apart from the nearest position of extension 82B.

According to this structure, swing mechanism 70B can obtain and swing mechanism 70 action effect much at one.

(the 4th embodiment)

As the 4th embodiment, the same with above-mentioned swing mechanism 70, have example with reference to Figure 25～Figure 26 explanation as other swing mechanisms 70C of the switching mechanism function that can easily change the execution that has or not firm machine line knotting.Figure 25 is the front view of swing mechanism 70C, and Figure 26 is an exploded perspective view.In addition, the difference of main explanation and chain sitch sewing machine, the structure identical with chain sitch sewing machine 100 used identical symbol and the repetitive description thereof will be omitted.

Swing mechanism 70C, have: be the binding action component 72C of center swing with spindle unit 62, have butting section 71C and be the switching motion parts 73C that swing at the center with spindle unit 62 with the state overlapping with linking action component 72C, be arranged on two action component 72C, between the 73C, make switching motion parts 73C be positioned at executing location and non-executing location ground that can not be abutted against and the lockable mechanism 74C that links the chimeric locking of action component 72C that butting section 71C can be abutted against with cam part 61, as keeping with elastic force and the executing location of switching motion parts 73C or the elastomeric pushing spring 75C of the chimeric lockup state of non-executing location.

Link action component 72C, its central portion is by spindle unit 62 pivotal support along X-direction, be configured in Sewing machines base plate 21 the side and with plane cam 32 adjacency.

This links action component 72C, on the swing position 81C that leaves from spindle unit 62, with the end binding of above-mentioned connect mechanism 64.

And this links action component 72C, has formed the 83D of first and second mating holes portion, the 84C that constitutes a lockable mechanism 74C part with breakthrough status.The 83C of these mating holes portions, 84C internal diameter equate, and are linked by the 85C of slit portion than each 83C of mating holes portion, 84C internal diameter narrow width that the circular arc direction that along spindle unit 62 is the center forms.

In addition, rotation direction to butting section 71C pushing contact plate cam 32 peripheries of the switching motion parts 73C that links with this binding action component 72C has been installed to linking the extension spring 76C that action component 72C exerts pressure on this binding action component 72C.

In addition, be provided with at switching motion parts 73C and be under the state of executing location, butting section 71C can not rotate the not shown block that surpasses predetermined distance to the darker side of plane cam 32 peripheries (deboost axle side).With this, in non-executing location, butting section 71C can keep the position that does not reach cam part 61 front ends.

Switching motion parts 73C, with link state that action component 72C overlaps by spindle unit 62 pivotal support, have the butting section 71C of round bar shape.This butting section 71C is configured to: be positioned at the position of leaving from spindle unit 62, and utilize lockable mechanism 74C and can be abutted against with the periphery of plane cam 32 so that switching motion parts 73C is transformed into the executing location state with respect to linking action component 72C.

Lockable mechanism 74C has: be arranged on the 83C of first and second mating holes portion, the 84C and the 85C of slit portion that link the mutual same diameter on the action component 72C, be converted the conversion handle 86C that action component 73C supported and can insert selectively first 83C of mating holes portion and second 84C of mating holes portion by segmentation screw 87C.

Conversion handle 86C is tubular, and the one end is compared with other parts and has been formed minor diameter, and the other end has been formed major diameter in order to grasp easily to each 83C of mating holes portion, 84C plug the time.And, the end of conversion handle 86C, the size of its diameter is set to: can insert each 83C of mating holes portion, 84C but can not insert the 85C of slit portion.

Taken in the center that above-mentioned pushing spring 75C and segmentation screw 87C pass pushing spring 75C and change handle 86C in the inboard of conversion handle 86C.This segmentation screw 87C, its leading section are fixed on by screw thread among the screw 77C of switching motion parts 73C, keep pushing spring 75C with compressive state.Utilize the compression of this pushing spring 75C, conversion handle 86C quilt is to exerting pressure to the direction of inserting each 83C of mating holes portion, 84C.

Lockable mechanism 74C utilizes pushing spring 75C elasticity, keeps either party state that conversion handle 86C is inserted into each 83C of mating holes portion, 84C, and can be that the center is rotated binding action component 72C and switching motion parts 73C together with spindle unit 62.

And, be inserted at conversion handle 86C under either party state of each 83C of mating holes portion, 84C, when overcoming pushing spring 75C and should change handle 86C and pull out, because inboard segmentation screw 87C is set to can be by the external diameter of conversion handle 86C, so can stride across the 85C of this slit portion, between 83C of mating holes portion and 84C, can move conversion handle 86C with the state that has linked switching motion parts 73C.

On the other hand, the position of first 83C of mating holes portion is set to: when having inserted adjustment handle 86C, the butting section 71C that is converted action component 73C maintenance can be positioned at the executing location (the double dot dash line position of Figure 25) of being abutted against with the periphery of plane cam 32.According to this set positions, binding action component 72C and switching motion parts 73C rotate simultaneously when utilizing plane cam 32 rotations to be abutted against butting section 71C on cam part 61, machine line holding member 63 can be moved to machine line holding position and carry out the knotting of machine line.

In addition, the position of second 84C of mating holes portion is set to: when having inserted adjustment handle 86C, the butting section 71C that is converted action component 73C maintenance can be positioned at the non-executing location of leaving from the periphery of plane cam 32 (solid line position of Figure 25).According to this set positions,,, tie a knot so can not carry out the machine line because binding action component 72C and switching motion parts 73C do not rotate even plane cam 32 rotating cam parts 61 also bump less than butting section 71C.

According to said structure, on swing mechanism 70C, utilize the elasticity of the pushing spring 75C of lockable mechanism 74C, kept the state that inserts conversion handle 86C either party of each 83C of mating holes portion, 84C, and can keep execution or the non-executing state that the machine line is tied a knot, the elastic force that utilization overcomes pushing spring 75C will change handle 86C from the 83C of mating holes portion or 84C pulls out and move it and insert selectively between 83C of mating holes portion and 84C, the execution of can the interpreter line tiing a knot or the setting of non-execution.

According to this structure, swing mechanism 70C can obtain and swing mechanism 70 action effect much at one.

(the 5th embodiment)

As the 5th embodiment, the example of other machine line knotting mechanisms 60D is described with reference to Figure 27～Figure 30.Figure 27 is the main position stereogram of machine line knotting mechanism 60D, and Figure 28 is an exploded perspective view, and Figure 29 is the sectional view along the V-V line of Figure 28, and Figure 30 is the switching motion key diagram that possesses the switching mechanism 80D of machine line knotting mechanism 60D.In addition, the difference of main explanation and chain sitch sewing machine, the structure identical with above-mentioned chain sitch sewing machine 100 used identical symbol and the repetitive description thereof will be omitted.

This machine line knotting mechanism 60D is characterized in that: be provided with conversion by the execution of the machine line knotting of machine line holding member 63 and the switching mechanism 80D of non-execution between swing mechanism 70D and connect mechanism 64.

Promptly, machine line knotting mechanism 60D, have: the plane cam 32 that possesses cam part 61, has the butting section 71D that is abutted against with cam part 61, and utilizing being abutted against of this butting section 71D and cam part 61 can be that the center is swingingly by the swing mechanism 70D of pivotal support with spindle unit 62, can back and forth be supported on the below of needle plate 12 rotationally, and the machine line holding member 63 that overlaps of first line that utilize to rotate keeps forming by the pin that falls before the most last pin two pins, link the swing position of swing mechanism 70D and the connect mechanism 64 of machine line holding member 63, the knotting execution of conversion using machine line holding member 63 and the switching mechanism 80D of non-execution.

At first, swing mechanism 70D has: possess the butting section 71D that is abutted against with cam part 61 and with spindle unit 62 be the binding action component 72D of center swing, the extension spring 76D that binding action component 72D exerted pressure to the rotation direction of the periphery of the butting section 71D of this bindings action component 72D pushing contact plate cam 32.

Link action component 72D, its central portion is by spindle unit 62 pivotal support along X-direction, be configured in Sewing machines base plate 21 the side and with plane cam 32 adjacency.

This links action component 72D, is leaving spindle unit 62 along on the swing position 73D of X-direction bending formation, by the end binding of switching mechanism 80D and above-mentioned connect mechanism 64.

In addition, link action component 72D, on the other swing position 74D that leaves from spindle unit 62, linked extension spring 76D, and butting section 71D is applied elastic force so that can rotate to the direction of push plate cam 32 peripheries.

In addition, when butting section 71D utilizes the rotational action of plane cam 32 and cam part 61 to be abutted against, can rotate in the opposite direction to the side that applies elastic force with extension spring 76D.

Switching mechanism 80D has: utilize the position conversion operations and change swing position 73D and the binding of connect mechanism 64 and the switching motion parts 81D of cut-out that links action component 72D, first 83D of mating holes portion that keeps switching motion parts 81D in the executing location that the reciprocating action of the Y direction on the swing position 73D of binding action component 72D can be passed to an end of connect mechanism 64, second 84D of mating holes portion that keeps switching motion parts 81D in the non-executing location that the reciprocating action of the Y direction on the swing position 73D of binding action component 72D can not be passed to an end of connect mechanism 64, the 85D of slit portion that guides the switching motion parts 81D between first 83D of mating holes portion and second 84D of mating holes portion to move, 86D, keep the elastomeric pushing spring 82D of switching motion parts 81D in executing location or non-executing location as utilizing pressure.

First 83D of mating holes portion and the 85D of slit portion are arranged on the swing position 73D that links action component 72D with breakthrough status.First 83D of mating holes portion is the circular hole that forms with breakthrough status, the 85D of slit portion, and the one end is communicated with first 83D of mating holes portion and width is set to narrower than the internal diameter of the 83D of mating holes portion.In addition, the other end of the 85D of slit portion is open facing outward.

Second 84D of mating holes portion and the 86D of slit portion are arranged on the tabular carriage 88D that is fixedly installed on the Sewing machines base plate 21 with breakthrough status.Second 84D of mating holes portion be with breakthrough status that form with circular hole first 83D of the mating holes portion same diameter, the 86D of slit portion, the one end is communicated with second 84D of mating holes portion and width is set to narrower than the internal diameter of the 84D of mating holes portion.In addition, the other end of the 86D of slit portion is open facing outward.And, the 86D of slit portion is configured to: under the state that the peripheral part beyond the cam part 61 that links action component 72D butting section 71D and plane cam 32 is abutted against, parallel with the above-mentioned 85D of slit portion, and the open end of each 85D of slit portion, 86D can be closer to each other relative.

Switching motion parts 81D is tubular and is inserted into and remains in the spherical bearing 65 that is located at connect mechanism 64 1 ends.These switching motion parts 81D, one end (bottom) is formed littler so that can plug in each 83D of mating holes portion, 84D than other section diameters, the major diameter of holding easily when the other end (upper end) is formed on each 83D of mating holes portion, 84D plug.

The external diameter of the bottom of above-mentioned switching motion parts 81D is set to the size that can insert each 83D of mating holes portion, 84D but can not insert the 85D of slit portion, 86D.

Taken in above-mentioned pushing spring 82D in the inboard of switching motion parts 81D and penetrated segmentation screw 87D at the center of pushing spring 82D and switching motion parts 81D.This segmentation screw 87D, the state that passes 83D of mating holes portion or 84D with its leading section (bottom) is tightened at its leading section nut 89D has been installed.This nut 89D is bigger than the diameter of 83D of mating holes portion and 84D, with this, prevents that switching motion parts 81D from deviating from upward with respect to 83D of mating holes portion or 84D.

In addition, pushing spring 82D always presses switching motion parts 81D to nut 89D thruster, and consequently, the minor diameter that can keep switching motion parts 81D bottom is inserted into the state among 83D of mating holes portion or the 84D.

According to said structure, mutual peristome at above-mentioned each 85D of slit portion, 86D is near relative state, in any one 83D of mating holes portion or 84D, inserted under the state of switching motion parts 81D bottom, when overcoming pushing spring 82D these switching motion parts 81D pulled out, because inboard segmentation screw 87D external diameter is set to and can passes through 85D of slit portion and 86D, so can stride across 85D of crack portion and 86D, mobile switching motion parts 81D between 83D of mating holes portion and 84D.

And, be inserted at switching motion parts 81D under the state of first 83D of mating holes portion, the swing position 73D and the connect mechanism 64 that link action component 72D are in the state that is bonded, the cam part 61 that utilization is held in the butting section 71D that links on the action component 72D and the plane cam 32 of rotation is abutted against and the wobbling action of the binding action component 72D that carries out can be passed to machine line holding member 63, and can move it machine line holding position and carry out the machine line and tie a knot.

In addition, be moved under the state that inserts second 84D of mating holes portion at switching motion parts 81D, do not pass to connect mechanism 64 owing to link the swing of action component 72D, and, one end of connect mechanism 64 is maintained on the 83D of mating holes portion, so machine line holding member 63 can be held in the rear position of holding position and not carry out the knotting of machine line.

According to said structure, on switching mechanism 80D, utilize the elasticity of pushing spring 82D, keep switching motion parts 81D and be inserted into each 83D of mating holes portion or either party state of 84D, can keep the execution or the non-executing state of the knotting of machine line, utilization with switching motion parts 81D from the 83D of mating holes portion or 84D pulls out and move between 83D of mating holes portion or 84D and insert selectively, the execution that can the knotting of interpreter line or the setting of non-execution.

According to this structure, machine line knotting mechanism 60D can obtain and machine line knotting mechanism 60 action effect much at one.

(the 6th embodiment)

As the 6th embodiment, the example of other machine line knotting mechanisms 60E is described with reference to Figure 31～Figure 34.Figure 31 is the stereogram at the main position of machine line knotting mechanism 60E, and Figure 32 is an exploded perspective view, and Figure 33, the 34th possesses the switching motion key diagram of the switching mechanism 80E of other machine line knotting mechanisms 60E.In addition, so because the switching mechanism 80E of present embodiment also continues to use Figure 29 with the above-mentioned identical present embodiment of switching mechanism 80D structure, the structure about switching mechanism 80E on this Figure 29 is documented in the bracket entirely.

In addition, the difference of main explanation and above-mentioned chain sitch sewing machine 100, the structure identical with chain sitch sewing machine 100 used identical symbol and the repetitive description thereof will be omitted.

In this machine line knotting mechanism 60E, it is characterized in that the execution of the machine line of conversion using machine line holding member 63 knotting and the switching mechanism 80E of non-execution are located on the connect mechanism 64.

Promptly, machine line knotting mechanism 60E, have: the plane cam 32 that possesses cam part 61, has the butting section 71E that is abutted against with cam part 61, and utilizing being abutted against of this butting section 71E and cam part 61 can be that the center is swingingly by the swing mechanism 70E of pivotal support with spindle unit 62, can back and forth be supported on the below of needle plate 12 rotationally, and the machine line holding member 63 that overlaps of first line that utilize to rotate keeps forming by the pin that falls before the most last pin two pins, link the swing position of swing mechanism 70E and the connect mechanism 64E of machine line holding member 63, the execution of the knotting of conversion using machine line holding member 63 and the switching mechanism 80E of non-execution.

At first, swing mechanism 70E has: possess the butting section 71E that is abutted against with cam part 61 and with spindle unit 62 be the center swing binding action component 72E, push the extension spring 76E that the rotation direction that contacts is exerted pressure to binding action component 72E to the butting section 71E and the periphery of plane cam 32 of this bindings action component 72E.

Link action component 72E, its central portion is by spindle unit 62 pivotal support along X-direction, be configured in Sewing machines base plate 21 the side and with plane cam 32 adjacency.

This links action component 72E, is leaving on the swing position 73E of spindle unit 62, links with connect mechanism 64.

In addition, link action component 72E,, link, and apply elastic force so that can rotate to the direction of butting section 71E push plate cam 32 peripheries with extension spring 76E leaving on other swings position 74E of spindle unit 62.

In addition, when butting section 71E utilizes the rotational action of plane cam 32 and cam part 61 to be abutted against, can rotate in the opposite direction to the side that applies elastic force with extension spring 76E.

Connect mechanism 64E has: an end and the other end binding that links first connecting rod body 65E that action component 72E is connected, an end and second connecting rod body 66E, an end and the second connecting rod body 66E of 63 bindings of machine line holding member and by segmentation screw 68E central portion by the third connecting rod body 67E of pivotal support on Sewing machines base plate 21 rotationally.In addition, its other end of this third connecting rod body 67E can link by the other end of switching mechanism 80E and first connecting rod body 65E.

In addition, this connect mechanism 64E, except the binding that can cut off first connecting rod body 65E and third connecting rod body 67E, structure and above-mentioned connect mechanism 64 are much at one.

Switching mechanism 80E as mentioned above, is arranged between third connecting rod body 67E and the first connecting rod body 65E, can carry out their binding-cut-out.

Switching mechanism 80E has: the first connecting rod body 65E and the binding of third connecting rod body 67E and the switching motion parts 81E of cut-out that utilize position conversion operations conversion connect mechanism 64E, at first 83E of mating holes portion that can transmit the executing location maintenance switching motion parts 81E of wobbling action from the first connecting rod body 65E of connect mechanism 64 to third connecting rod body 67E, at second 84E of mating holes portion that can not transmit the non-executing location maintenance switching motion parts 81E of wobbling action from the first connecting rod body 65E of connect mechanism 64E to third connecting rod body 67E, guide the 85E of slit portion that moves of the switching motion parts 81E between first 83E of mating holes portion and second 84E of mating holes portion, 86E, keep the elastomeric pushing spring 82E of switching motion parts 81E in executing location or non-executing location as utilizing pressure.

First 83E of mating holes portion and the 85E of slit portion are arranged on the other end of the third connecting rod body 67E of connect mechanism 64E with breakthrough status.First 83E of mating holes portion is the circular hole that forms with breakthrough status, the 85E of slit portion, and the one end is communicated with first 83E of mating holes portion and width is set to narrower than the internal diameter of the 83E of mating holes portion.In addition, the other end of the 85E of slit portion is open facing outward.

Second 84E of mating holes portion and the 86E of slit portion, with breakthrough status be arranged on by segmentation screw 90E can be rotationally by pivotal support on the arm member 88E of the L word shape on the Sewing machines base plate 21.Second 84E of mating holes portion be with breakthrough status that form with circular hole first 83E of the mating holes portion same diameter, the 86E of slit portion, the one end is communicated with second 84E of mating holes portion and width is set to narrower than the internal diameter of the 84E of mating holes portion.In addition, the other end of the 86E of slit portion is open facing outward.

And third connecting rod body 67E accepts tension force and is abutted against with the block 91E side that is arranged side by side from extension spring 92E.In addition, arm member 88E accepts tension force and is abutted against with the block 94E side that is arranged side by side from extension spring 92E similarly.Be configured to: under this state, the 86E of slit portion is parallel with the 85E of slit portion, and the open end of each 85E of slit portion, 86E can be closer to each other relative.

In addition, block 91E, its position is set to: the butting section 71E that links action component 72E be positioned at cam part 61 beyond the periphery contact condition of plane cam 32 under the front position of first connecting rod body 65E the other end and first 83E of mating holes portion of third connecting rod body 67E consistent on Y direction, and the direction and the third connecting rod body 67E of the rotation of block 91E can never hinder the butting section 71E of binding action component 72E and cam part 61 to be abutted against the time are abutted against.

Switching motion parts 81E is tubular and is inserted among the spherical bearing 69E that remains in the first connecting rod body 65E the other end that is located at connect mechanism 64E.These switching motion parts 81E, one end (bottom) is formed littler so that can plug in each 83E of mating holes portion, 84E than other section diameters, the major diameter of holding easily when the other end (upper end) is formed on each 83E of mating holes portion, 84E plug.

The bottom of above-mentioned switching motion parts 81E, external diameter are set to the size that can insert each 83E of mating holes portion, 84E but can not insert the 85E of slit portion, 86E.

Taken in above-mentioned pushing spring 82E in the inboard of switching motion parts 81E and inserted segmentation screw 87E at the center of pushing spring 82E and switching motion parts 81E.This segmentation screw 87E, the state that passes 83E of mating holes portion or 84E with its leading section (bottom) is tightened at its leading section nut 89E has been installed.This nut 89E is bigger than the diameter of 83E of mating holes portion and 84E, with this, prevents that switching motion parts 81E from deviating from upward with respect to 83E of mating holes portion or 84E.

In addition, pushing spring 82E always presses switching motion parts 81E to nut 89E thruster, its result, and the minor diameter that can keep switching motion parts 81E bottom is inserted into the state among 83E of mating holes portion or the 84E.

According to said structure, mutual peristome at above-mentioned each 85E of slit portion, 86E is near relative state, in any one 83E of mating holes portion or 84E, inserted under the state of switching motion parts 81E bottom, when overcoming pushing spring 82E these switching motion parts 81E pulled out, because inboard segmentation screw 87E external diameter is set to and can passes through 85E of slit portion and 86E, so can stride across 85E of crack portion and 86E, mobile switching motion parts 81E between 83E of mating holes portion and 84E.

And, be inserted at switching motion parts 81E under the state of first 83E of mating holes portion, as shown in figure 33, the first connecting rod body 65E of connect mechanism 64E and third connecting rod body 67E are in the state that is bonded, be held in the butting section 71E that links on the action component 72E and the wobbling action of the binding action component 72E that utilizes cam part 61 with rotor plate cam 32 be abutted against and carry out can be passed to machine line holding member 63, move it machine line holding position and carry out the knotting of machine line.

In addition, be moved under the state that inserts second 84E of mating holes portion at switching motion parts 81E, as shown in figure 34, be delivered to arm member 88E and do not pass to machine line holding member 63 owing to link the wobbling action of action component 72E, so machine line holding member 63 tension force because of extension spring 92E are held in the rear position of machine line holding position and can not carry out the knotting of machine line.

According to said structure, on switching mechanism 80E, utilize the elasticity of pushing spring 82E, keep switching motion parts 81E and be inserted into each 83E of mating holes portion or either party state of 84E, can keep the execution or the non-executing state of the knotting of machine line, utilization with switching motion parts 81E from the 83E of mating holes portion or 84E pulls out and move between 83E of mating holes portion or 84E and insert selectively, the execution that can the knotting of interpreter line or the setting of non-execution.

According to this structure, machine line knotting mechanism 60E can obtain and machine line knotting mechanism 60 action effect much at one.

(the 7th embodiment)

As the 7th embodiment, the example of other machine line knotting mechanisms 60F is described with reference to Figure 35～Figure 37.Figure 35 is the stereogram at the main position of machine line knotting mechanism 60F, and Figure 36 is the exploded perspective view that possesses the switching mechanism 80F of other machine line knotting mechanisms 60F, and Figure 37 is the switching motion key diagram that possesses the switching mechanism 80F of other machine line knotting mechanisms 60F.In addition, the difference of main explanation and above-mentioned chain sitch sewing machine 100, the structure identical with chain sitch sewing machine 100 used identical symbol and the repetitive description thereof will be omitted.

In this machine line knotting mechanism 60F, it is characterized in that the execution of the machine line of conversion using machine line holding member 63 knotting and the switching mechanism 80E of non-execution are located on the plane cam 32.

Promptly, machine line knotting mechanism 60F, have: possess cam part 61F plane cam 32, the swing mechanism 70E identical with above-mentioned machine line knotting mechanism 60E, can back and forth be supported on the below of needle plate 12 rotationally, and utilize connect mechanism 64, the knotting execution of conversion using machine line holding member 63 and the switching mechanism 80F of non-execution that rotates the machine line holding member 63, the swing position that links swing mechanism 70F and the machine line holding member 63 that keep first line cover that forms by the pin that falls before the most last pin two pins.

Switching mechanism 80F has: be fixedly installed on the deboost axle 31 and together rotation simultaneously with segmentation screw 86F as fulcrum and the pedestal 88F of pivotal support cam part 61F rotationally, utilize the position conversion operations can switching cam parts 61F can with the switching motion parts 81F of the executing location of butting section 71E and the non-executing location that can not be abutted against, be arranged on first 83F of mating holes portion that pedestal 88F went up and kept in executing location switching motion parts 81F, be arranged on second 84F of mating holes portion that pedestal 88F went up and kept in non-executing location switching motion parts 81F, guide the 85F of slit portion that moves of the switching motion parts 81F between first 83F of mating holes portion and second 84F of mating holes portion, keep the elastomeric pushing spring 82F of switching motion parts 81F in executing location or non-executing location as utilizing pressure.

Pedestal 88F is long plate shape and possesses the sliding sleeve that regulating shaft 31 was passed and kept in position therebetween.And clamping slides over an end side and is provided with segmentation screw 86F, connects in the other end side and is provided with the 83F of first and second mating holes portion, 84F and the 85F of slit portion.

Cam part 61F is and the circular-arc plate body of plane cam 32 same diameter, by segmentation screw 86F pivotal support, in the other end, by segmentation screw 87F described later switching motion parts 81F has been installed in the one end.

In addition, has the projection that saves function as the cam master outstanding being provided with of the centre of its arc edge portion direction outside circumference.

First 83F of mating holes portion is configured to make the arc edge portion of cam part 61F can be positioned at peripheral edge portion consistent location (executing location) with plane cam 32 by inserting switching motion parts 81F.

Second 84F of mating holes portion is configured to make the projection of cam part 61F can be positioned at peripheral edge portion going-back position (non-executing location) from plane cam 32 by inserting switching motion parts 81F.

The 85F of slit portion, the one end is communicated with first 83F of mating holes portion, and the other end is communicated with second 84F of mating holes portion, and has been set the narrow width of internal diameter than each 83F of mating holes portion, 84F.

Switching motion parts 81F is tubular, and the one end is formed littler so that can plug in each 83F of mating holes portion, 84F than other section diameters, the major diameter of holding easily when the other end (upper end) is formed on each 83F of mating holes portion, 84F plug.

The part of above-mentioned switching motion parts 81F, its external diameter are set to the size that can insert each 83F of mating holes portion, 84F but can not insert the 85F of slit portion, 86F.

Taken in above-mentioned pushing spring 82F in the inboard of switching motion parts 81F and inserted segmentation screw 87F at the center of pushing spring 82F and switching motion parts 81F.This segmentation screw 87F, to pass the state of the 83F of mating holes portion, 84F or the 85F of slit portion, its leading section and cam part 61F threaded engagement also are fixed.

In addition, pushing spring 82F always presses switching motion parts 81F to pedestal 88F thruster, and consequently, the minor diameter that can keep the bottom of switching motion parts 81F is inserted the state of mating holes 83F of portion or 84F.

According to said structure, be inserted in the bottom of switching motion parts 81F under the state of any one 83F of mating holes portion or 84F, when overcoming pushing spring 82F these switching motion parts 81F pulled out, because inboard segmentation screw 87F external diameter is set to and can passes through the 85F of slit portion, so can stride across the 85F of this crack portion, mobile switching motion parts 81F between 83F of mating holes portion and 84F.

And, be inserted at switching motion parts 81F under the state of first 83F of mating holes portion, as shown in figure 35, the projection of cam part 61F is in the state of the outer circular edge portion protrusion of slave plate cam 32, rotation along with plane cam 32, the projection of cam part 61F and butting section 71E are abutted against, and can make to link action component 72E swing and machine line holding member 63 is moved to machine line holding position and carries out the knotting of machine line.

In addition, be inserted at switching motion parts 81F under the state of second 84F of mating holes portion, as shown in figure 36, the projection of cam part 61F is in the state that the outer circular edge portion of slave plate cam 32 retreats.Link action component 72E, make it can not turn to the inboard of plane cam 32 peripheries owing to possess the not shown block of restriction slewing area, so even plane cam 32 rotates, the projection of cam part 61F is not abutted against with butting section 71E yet, machine line holding member 63 slave line holding positions are retreated and does not carry out machine line knotting.

According to said structure, on switching mechanism 80F, utilize the elasticity of pushing spring 82F, keep switching motion parts 81F and be inserted into each 83F of mating holes portion or either party state of 84F, can keep the execution or the non-executing state of the knotting of machine line, utilization overcome pushing spring 82F with switching motion parts 81F from the 83F of mating holes portion or 84F pulls out and move between 83F of mating holes portion or 84F and insert selectively, the execution that can the knotting of interpreter line or the setting of non-execution.That is, in the present embodiment, switching motion parts 81F utilizes the projection (cam part) of cam part 61F to haunt machine line knotting cam 32 outer peripheral faces, keeps executing location and the non-executing location of swing mechanism 70E convertiblely.

According to this structure, machine line knotting mechanism 60F can obtain and machine line knotting mechanism 60 action effect much at one.

(the 8th embodiment)

As the 8th embodiment, the example of other switching mechanism 80G is described with reference to Figure 38～Figure 41.Figure 38 is the main position exploded perspective view of switching mechanism 80G, and Figure 39 is the main position amplification stereogram of switching mechanism 80G, Figure 40, the 41st, the switching motion key diagram of switching mechanism 80G.In addition, the difference of main explanation and above-mentioned chain sitch sewing machine 100, the structure identical with chain sitch sewing machine 100 used identical symbol and the repetitive description thereof will be omitted.

In the present embodiment, it is characterized in that switching mechanism 80G is located at from linking action component 72E and transmit on the connect mechanism of wobbling actions, the structure except switching mechanism 80G and not shown connect mechanism and that the Sewing machines of machine line knotting mechanism 60E has been installed is identical to machine line holding member 63.The not shown connect mechanism of switching mechanism 80G has been installed, 64E is the same with connect mechanism, has: the third connecting rod body that the other end of second connecting rod body, an end and second connecting rod body that first connecting rod body, an end and the machine line holding member 63 that an end is connected with binding action component 72E links links.In addition, not shown connect mechanism, 64E is different with connect mechanism, its other end of third connecting rod body, the other end direct by screwed hole 86G and the first connecting rod body links, and is provided with switching mechanism 80G between second connecting rod body and machine line holding member 63.

This switching mechanism 80G, have: extend to machine line holding member 63 from an end of the second connecting rod body of connect mechanism, give tabular connecting rod body 82G from the swing locomotivity that links action component 72E, and the switching motion parts 81G that constitutes of the plate-shaped springs parts that support revolvably by near the fulcrum 87G the leading section that is positioned at above the tabular connecting rod body 82G.

Tabular connecting rod body 82G and switching motion parts 81G, can utilize the rotating operation of switching motion parts 81G, mutual leading section is overlapped, on each leading section, connect and be provided with the first peristome 83G and the second peristome 84G that can insert the fitting projection 63a that is located at machine line holding member 63.

Be located at the fitting projection 63a of machine line holding member 63, be set to: the rotation fulcrum 63b of slave line holding member 63 leaves, and can to make machine line holding member 63 be that rotate at the center with rotation fulcrum 63b fitting projection 63a is applied external force.In addition, on machine line holding member 63, can accept by not shown spring, only otherwise fitting projection 63a is applied external force, just can keep and be positioned at than the machine line holding position state of rear position more to the draw back tension force of rotation direction side of slave line holding position.

Side is provided with the positioning convex 85G that protrudes downwards below near switching motion parts 81G rearward end, as Figure 40, shown in Figure 41, utilization will be that the center is rotated switching motion parts 81G and the X-direction two sides of positioning convex 85G and tabular connecting rod body 82G are abutted against with fulcrum 87G, can change executing location and non-executing location that machine line described later is tied a knot.In addition, because switching motion parts 81G, be the rubber-like material, carry out the conversion of above-mentioned each position in the warpage top that makes positioning convex 85G cross tabular connecting rod body 82G upward so need overcome from the elastic force that self produces.That is, switching motion parts 81G itself has as utilizing pushing force to maintain the executing location of machine line knotting or the elastomeric function of non-executing location.

The first peristome 83G that is located on the tabular connecting rod body 82G is formed L word shape, and the longitudinal edge of L word is formed can be consistent with the reciprocating action direction of transmitting to tabular connecting rod body 82G from butting section 71E and be formed with the length of its reciprocating stroke unanimity or above the length of stroke.

In addition, the second peristome 84G that is located on the tabular connecting rod body 82G is formed linearity, and by set positions is: consistent with the L word longitudinal edge of the first peristome 83G and be formed with the length of the reciprocating stroke unanimity of tabular connecting rod body 82G or surpass the length of stroke on non-executing location.

Figure 40 represents that switching motion parts 81G is positioned the state of machine line knotting executing location by above-mentioned positioning convex 85G.As shown in figure 40, in executing location, the first peristome 83G of tabular connecting rod body 82G and the second peristome 84G of switching motion parts 81G, just a part is overlapping, and the fitting projection 63a of machine line holding member 63 is in the state that does not insert with rocking.Therefore, utilize the reciprocating action of tabular connecting rod body 82G to apply rotatory force to machine line holding member 63.

Figure 41 represents that switching motion parts 81G is positioned the tie a knot state of non-executing location of machine line by above-mentioned positioning convex 85G.As shown in figure 41, in non-executing location, the L word longitudinal edge part of the first peristome 83G of tabular connecting rod body 82G is consistent with the second peristome 84G of switching motion parts 81G, and the fitting projection 63a of machine line holding member 63 is in the state that can move along the length direction of lap.Therefore, even carry out the reciprocating action of tabular connecting rod body 82G, fitting projection 63a relatively moves in each peristome 83G, 84G inside, also machine line holding member 63 is not applied rotatory force.

According to said structure, on switching mechanism 80G, utilize elasticity and the positioning convex 85G of switching motion parts 81G, can keep the executing location or the non-executing location of the knotting of machine line selectively, by keeping the executing state or the non-executing state of the knotting of machine line, the elasticity that utilization overcomes switching motion parts 81G is transformed in execution and non-executing location with these switching motion parts 81G, the execution of energy converter line knotting and the setting of non-execution.

According to this structure, the machine line knotting mechanism that possesses switching mechanism 80G can obtain and machine line knotting mechanism 60 action effect much at one.

(the 9th embodiment)

As the 9th embodiment, the example of other switching mechanism 80H is described with reference to Figure 42～Figure 46.Figure 42 is the main position exploded perspective view of switching mechanism 80H, and Figure 43, Figure 44, Figure 45, Figure 46 are the switching motion key diagrams of switching mechanism 80H.In addition, the difference of main explanation and above-mentioned chain sitch sewing machine 100, the structure identical with chain sitch sewing machine 100 used identical symbol and the repetitive description thereof will be omitted.

In the present embodiment, be feature switching mechanism 80H is located at side by side on the machine line holding member 63, the structure except switching mechanism 80H and not shown connect mechanism is fully identical with the Sewing machines that above-mentioned machine line knotting mechanism 60E has been installed.Not shown connect mechanism, 64E is the same with connect mechanism, has: the third connecting rod body that the other end of second connecting rod body, an end and second connecting rod body that first connecting rod body, an end and the machine line holding member 63 that an end is connected with binding action component 72E links links.In addition, not shown connect mechanism, 64E is different with connect mechanism, and the other end direct and the first connecting rod body, its other end of third connecting rod body links, and the fitting projection 63a of second connecting rod body 66 and machine line holding member 63 is directly linked.

Switching mechanism 80H has: possess in the above machine line holding member 63 rotation fulcrum 63b long strip-board shape switching motion parts 81H, be located at that needle plate 82H goes up and with switching motion parts 81H be positioned to be used to carry out the executing location of machine line knotting the first maintaining part 83H, be located at that needle plate 82H goes up and switching motion parts 81H be positioned to be used for not carry out the second maintaining part 84H of the non-executing location of machine line knotting.

Switching motion parts 81H, the one end is by on the axial region 87H of pivotal support side below needle plate 82H, and can utilize the manual operation to the other end to be rotated.

In addition, upper face side in the length direction centre position of switching motion parts 81H possesses the fulcrum 86H of outstanding upward machine line holding member 63, utilize the rotating operation of switching motion parts 81H, can be along the rotating fulcrum position that the circumference that with fulcrum 86H is the center moves machine line holding member 63.

The first maintaining part 83H and the second maintaining part 84H are made of the breach of being located at the needle plate lateral edge portion, the pivoting end of switching motion parts 81H can be embedded selectively the first maintaining part 83H and the second maintaining part 84H of each nick shaped.

Switching motion parts 81H is the rubber-like plate body, need overcome from the elastic force that self produces warpage and cross the conversion that lug boss 85H carries out above-mentioned each position that separates that is formed between the first maintaining part 83H and the second maintaining part 84H downwards.That is, switching motion parts 81H itself has as utilizing pushing force to maintain the executing location of machine line knotting or the elastomeric function of non-executing location.

Figure 43, Figure 44 represent to utilize the above-mentioned first maintaining part 83H switching motion parts 81H to be positioned the state of machine line knotting executing location.As this Figure 43, shown in Figure 44, in executing location, the leading section rotary motion trace of machine line holding member 63 carried out falling pin near the outside, can carry out exactly that the machine line keeps and the knotting of the machine of execution line.

Figure 45, Figure 46 represent to utilize the above-mentioned second maintaining part 84H switching motion parts 81H to be positioned the state of the non-executing location of machine line knotting.As this Figure 45, shown in Figure 46, in non-executing location, carried out falling pin in the inboard of the leading section rotary motion trace of machine line holding member 63, can not carry out the machine line exactly and keep carrying out the knotting of machine line.

According to said structure, on switching mechanism 80H, utilize elasticity and each maintaining part 83H, 84H and the lug boss 85H of switching motion parts 81G, these switching motion parts 81H can keep the executing location and the non-executing location of machine line knotting selectively, can keep the execution or the non-executing state of the knotting of machine line, the elastic force that utilization overcomes switching motion parts 81H with these switching motion parts 81H in executing location and the conversion of non-executing location, the execution that can the knotting of interpreter line or the setting of non-execution.

According to this structure, the machine line knotting mechanism that possesses switching mechanism 80H can obtain and machine line knotting mechanism 60 action effect much at one.

Claims (5)

1. chain sitch sewing machine, wherein,

Have:

The eedle that moves up and down,

With described eedle co-operating form chain-type stitch rotary machine shuttle,

Have cam part machine line knotting cam,

Swing mechanism, it has the butting section of being abutted against with the cam part of described machine line knotting cam, and by being abutted against of this butting section and described cam part can be with the spindle unit center swingingly by pivotal support,

Machine line holding member, it is connected with the swing position of described swing mechanism and moves back and forth, and keeps the first machine line line cover that formed by the pin that falls before two pins of the most last pin,

Described machine line holding member keeps the machine line length of described first machine line line cover longer than common sewing state in machine line holding position, when the most last pin falls pin, the second machine line line cover after the described first machine line line cover is drawn to before the sewn object and moves from described machine line holding position and discharge the described first machine line line cover, put the formation toe-in and the described first machine line line cover is wrapped in the second machine line line, it is characterized in that with the 3rd machine line line cover that the pin that fallen by the most last pin forms:

Possess conversion by of the execution and the switching mechanism of non-execution of described machine line holding member, by described switching motion parts are transformed in executing location and non-executing location, and can select to have or not the described machine line of execution to tie a knot machine line knotting.

2. chain sitch sewing machine according to claim 1 is characterized in that:

Described switching mechanism has: change the switching motion parts of the execution of described machine line knotting and non-execution and utilize pushing force these switching motion parts to be maintained the elastomer of described executing location or non-executing location by the position of executing location and non-executing location

By overcoming described elastic force described switching motion parts are transformed in described executing location and non-executing location, can select to have or not the described machine line knotting of execution.

3. chain sitch sewing machine according to claim 2 is characterized in that:

Described switching mechanism is provided with:

With described spindle unit be center swing the binding action component,

Have described butting section described switching motion parts,

Lockable mechanism, it can make the chimeric locking of the relative described binding action component of described switching motion parts with described cam part described executing location of being abutted against and the described non-executing location that can not be abutted against in described butting section.

4. chain sitch sewing machine according to claim 2 is characterized in that: the cam part of described machine line knotting cam can be adjusted the position along the periphery of described machine line knotting cam.

5. chain sitch sewing machine according to claim 2, it is characterized in that: the described switching motion parts of described switching mechanism, can change to remain on making described executing location that described swing mechanism swings and the described non-executing location that described swing mechanism is swung from the haunting of outer peripheral face of described machine line knotting cam based on described cam part.

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