CN1120907C

CN1120907C - Device and sewing or embrodiery machines, for changing bobbin for gripper thread

Info

Publication number: CN1120907C
Application number: CN00805350A
Authority: CN
Inventors: 菲利普·莫尔
Original assignee: Kinoshita Precision Industrial Co Ltd
Current assignee: Kinoshita Precision Industrial Co Ltd
Priority date: 1999-03-23
Filing date: 2000-03-13
Publication date: 2003-09-10
Anticipated expiration: 2020-03-13
Also published as: DE19913043C2; JP2002539867A; DE19913043A1; CN1344340A; KR20020010130A; WO2000056969A1

Abstract

The invention relates to a device for double back stitch sewing or embroidery machines for changing the bobbin capsule that receives the bobbin and that is itself received by a gudgeon, which is located inside the lower capsule of the gripper. The inventive device comprises a receiving device, which has a support with several adjacent receiving areas for the bobbin capsules and a gripping device for transferring the bobbin capsules with full bobbins from the changeover position of the receiving device to the gripper and for transferring the bobbin capsules with empty bobbins from the gripper to the changeover position of the receiving device. The changeover position of the receiving device is positioned directly to the side of the gripper, on essentially the same axis, and the gripping device can be moved along a path between the gripper and the changeover position of the receiving device that is oriented essentially parallel to the gripper axis.

Description

Be used for the more device of the bobbin case of tape swapping shuttle of double-lock type stitch sewing or embroidery machine

The present invention relates to a kind of device that is used for changing the bobbin case that has shuttle that is used for double-lock type stitch sewing or embroidery machine.

Double-lock type stitch sewing machine has usually with a spur of catching sewing thread kink and with a shuttle that is bearing in the following cover that has the bobbin case that is contained by it in the shuttle.Here be covered with down one with the tenon axle of the concentric setting of shuttle axle, it embeds in the hollow cylinder that is located in the bobbin case when loading onto bobbin case in cover down, the shuttle of the ball of string of sewing is installed in hollow cylinder supporting itself.

On the tenon axle that bobbin case is fixed on down cover, the tenon axle is provided with a groove in its free end zone, and a hold-down screw that is located on the bobbin case embeds in this groove when covering under bobbin case is packed into.Hold-down screw can overcome spring force and move in bobbin case, and has a hole that the tenon axle is passed, and it is than the big certain amount of tenon shaft diameter.Therefore hold-down screw is fixed bobbin case on an one final position, prevent that it is from dropping out the cover down, and can be arranged on pivotally on the bobbin case and overcome spring force with valve that hold-down screw is connected movingly by means of one and make it move to one to unclamp on another final position of bobbin case, can or from shuttle, take out from cover down at this position bobbin case.For on this position of hold-down screw, thereby particularly not only packing into but also taking out bobbin case during prevent that shuttle from dropping out from bobbin case, be provided with the flange that turns round of square basically on hold-down screw, it passes the hole that is located on the bobbin case wall and stretches into inner chamber and prevent that shuttle from dropping out from bobbin case.

For easy to operate its free end that makes valve is bent away from bobbin case slightly, and can catch it more easily, bobbin case is taken out and bobbin case is packed into down in the cover from following cover by the operator.

Because shuttle can only hold the less sewing thread of length, therefore need often to change shuttle, and often take out and reload bobbin case therewith relatively, and the device that is used for changing shuttle or bobbin case is well-known, it is with the manual shuttle of changing of technique device imitation.

For example in JP8-196766 and US PS 5 718 181, represented such device.

For example the device by JP8-196766 has a hook by a movable bracket supports, and it is caught valve and gives its gyration corresponding to manual movement in order to take out bobbin case, and last valve is fitted in the corresponding supporting that is made on the support.Hold-down screw carries out corresponding transverse movement thus, makes bobbin case released, and can shift out from cover down by the support that can move on the regulation track with shuttle.Here tracks is designed to like this, support shape is guided sealedly and does earlier a motion that is parallel to the shuttle axis, is transformed into the single-revolution motion then, then carries out downward-sloping motion, and final bobbin case is transferred to one and is arranged on the box of shuttle side-lower.

The bobbin case of outfit one shuttle of filling is packed into and is similarly carried out therewith in the cover down.

Because bobbin case is no matter be to move to box from shuttle or move to from box the process on the shuttle at it only to fix by hook to force closure, hook must apply sizable thrust on valve in the whole time-continuing process of these motions.

In by the device of above-mentioned US-PS file, also be provided with a hook of clamping valve, catching bobbin case, this hook is similar to device by JP8-196766 and moves to from shuttle at bobbin case that valve is pressed on the corresponding backstop the process that moves on the box or from box on the shuttle.Because form a hyoplastron simultaneously on this backstop, it is embedded in when valve is positioned at its final position once the hole that originally is arranged on the valve, and bobbin case carries out between above-mentioned moving period the sealed and part force closure ground of part shape at it to be fixed.

The shortcoming here also is, bobbin case is transferred on the box and transferred on the shuttle from box from shuttle and all undertaken by a plurality of different motions, therefore also more complicated of this device.

Therefore the objective of the invention is, such device is improved as follows, make and catch easily on the one hand and fixing bobbin case, reduce the construction expenditure that is used to change shuttle on the other hand.

For achieving the above object, by the invention provides a kind of like this device that is used for changing the bobbin case that has shuttle that is used for double-lock type stitch sewing or embroidery machine, bobbin case is arranged on the supporting of the tenon axle in the cover under the shuttle by one, described device have receiving system and with the support of many receiving positions that adjoin each other that are used for bobbin case be used for transferring to shuttle on from the replacing position of receiving system the bobbin case of the full shuttle of band and be used for the bobbin case of band hollow bobbin from shuttle transfer to the replacing of receiving system locational can along one from shuttle to the grabbing device of changing the guide rail movement that stretches the position, it is characterized by: the guide rail that is used for grabbing device is arranged essentially parallel to the shuttle axle and arranges, the replacing position of receiving system is arranged on the side of shuttle in this wise, make bobbin case the axle within the replacing position of receiving system with its coaxial distribution in position within shuttle.

Not only greatly facilitate the operation of bobbin case to be transferred by the layout of changing the position by receiving system of the present invention, and for bobbin case the transfer from the receiving system to the shuttle or from the shuttle to the receiving system obtains a short especially distance, if receiving system and be contained in distance between the bobbin case in the shuttle and be reduced to and make sewing thread pass needed amount, this distance only is slightly larger than the width of bobbin case so.Therefore on the one hand significantly reduce and be used for the construction expenditure that bobbin case shifts, on the other hand because the grabbing device stroke is short also correspondingly saves time, change process grabbing device this distance of must passing by for twice in view of each, it plays king-sized effect.

Here obvious, both also irrelevant by principle of the present invention with its installation site in Sewing machines with the structure type of shuttle.No matter it is all the same to involve the shuttle or the so-called swing shuttle of rotation.It is same no matter shuttle is to rotate also all the same around axle that is parallel to machine spindle or the axle that winds perpendicular to main shaft.Certainly can be applied to have the Sewing machines of the shuttle that rotates around vertical axis by principle of the present invention.

If receiving system can be parallel to the axis revolution that its distributes with a certain distance from shuttle around one, obtain a kind of solution of saving the position so, its makes the bobbin case of the shuttle that has had with sky send easily simultaneously again.

If receiving system can distribute and crossing with it axle rotation perpendicular to the shuttle axis around one, just can realize another kind of alternative plan so.

If receiving system can be good along vertical and/or horizontal motion here.

The bobbin case of common structure form is provided with one and is used for the valve that grasps and operate, and its gyration impels the moving of locking element that embeds in the cover tenon axial trough down and make lock slide mostly simultaneously, and bobbin case is unclamped, and takes out from shuttle.

Can not have on the one hand and alternatively abandon valve commonly used so far, get rid of bobbin case on the other hand and transfer to from shuttle at it that solution crooked or that kill obtains like this process of replacing position of receiving system, be that grabbing device has two retaining elements that are used for bobbin case that can be parallel to the shuttle axial-movement on a slide plate, wherein first retaining element is provided with a steady pin, it can insert in the hole that is located on the bobbin case along the direction of motion of grabbing device, second retaining element has an attaching clamp, and it can act on the lock slide and additionally move perpendicular to the bobbin case longitudinal axis.

Wherein it is bearing on first retaining element pivotally for the transverse movement that realizes second retaining element.

Be located on the bobbin case bottom surface and lock slide has heavy cutting of being blocked by the attaching clamp of second retaining element on the next door in hole if be used for the hole of first retaining element, obtain the relatively shorter distance of catching bobbin case for two retaining elements so.

The solution that locking element is simplified greatly obtains by such mode, it is the two-arm spring that locking element is made the arm with two layouts that are parallel to each other basically, wherein one arm is located at down the locked position of the locking element in the cover tenon axial trough, and can be transformed into its released position by grabbing device.

If the square bending and stretch into the installing space that bobbin case is used for shuttle when two-arm spring is in the released position basically of the free end of two-arm spring one arm, two-arm spring can be used for shuttle is fixed in the bobbin case simultaneously so.

Bobbin case is taken out from shuttle when shuttle from dropping out from bobbin case in order to unclamp bobbin case so that preventing, first kind of scheme of grabbing device has an extension fixture that is used for two-arm spring, it is provided with two fingers, they can be moved between two arms of two-arm spring by a slide plate that can be parallel to the motion of shuttle axle, and the arm that wherein unclamps bobbin case can be additionally perpendicular to the skateboarding orbital motion.

If catch device have one by slide plate supporting, with the coefficient magnet of end of bobbin case, can reach further security for the fixing of bobbin case so.

In order to move on the one hand the bobbin case that uses up is taken away from receiving system easily, receiving system can be loaded onto a bobbin case that has a full shuttle again on the other hand, and support removably is connected with it, and can lock by means of a sealed joint of speed and its.Receiving system can irrespectively be loaded onto the bobbin case that has full shuttle again with sewing process at that time on an independent position thus.

If grabbing device support one side of shuttle dorsad just occur being used for the driving of grabbing device so, only needs a straight-line simple especially solution of grabbing device from shuttle direction motion altogether.

For the bobbin case position that particularly has full shuttle can being inserted in the shuttle exactly, receiving system has one and is used for the bobbin case position is fixed on mechanism in the receiving system exactly.

If being arranged and be spaced from each other the pin of certain distance setting by two perpendicular, the mechanism that is used for fixing bobbin case constitutes, they stretch in the hole of bobbin case, wherein the mutual distance of pin is equivalent to be located at down the distance of the steady pin that is used for bobbin case in the cover, and what be used for fixing it on the bobbin case is configured for the hole of the pin on the receiving system with the coefficient hole of steady pin, so just obtains a kind of good especially and solution that can make inexpensively.

Other possibilities that are used for bobbin case is fixed on the support obtain by such mode, be that support has many muscle sheets that its tracks is arranged that are arranged essentially parallel to, wherein each muscle sheet is provided with a gathering sill that is used for the bobbin case locking element, if perhaps support has many its tracks of being arranged essentially parallel to and arranges and leave mutually the sleeves that certain distance is provided with, they be respectively equipped with one with the coefficient gathering sill of locking element of bobbin case.

Another object of the present invention is to simplify to be used for grasping bobbin case and it is transported to receiving system or is transported to the grabbing device of shuttle from receiving system from shuttle, makes retaining element no longer need mutual relatively-movable part.

This purpose realizes like this under the situation that adopts a special bobbin case of design for this reason: make grabbing device have a plurality of retaining elements that are used for bobbin case that can be parallel to the motion of shuttle axle on a slide plate, they can insert the hole that is located on the bobbin case bottom surface and is arranged essentially parallel to its longitudinal axis layout, and in order to catch bobbin case in the hole, the direction of motion perpendicular to grabbing device to move.

If shoulder hole is made in the hole here, its macropore feeds the bobbin case that is used for shuttle and installs in the cavity, is favourable like this.

Be used for catching a kind of simple especially feasibility of bobbin case to obtain like this, promptly steady pin is can be separately parallel or perpendicular to its axis that vertically distributes revolution around one.

If steady pin sets a fixing spring that is used for shuttle at least, it is arranged essentially parallel to shuttle and arranges, and when steady pin moves in the hole, embed in the groove that is located on the bobbin case housing, so just reached shuttle and transferred to fixing during transferring to the shuttle on the receiving system or from receiving system from shuttle at bobbin case 101.

Be used for not only making fixing spring but also the solution simple in structure of steady pin motion is obtained by such mode, promptly fixing spring is connected with slide plate by a common bracket supports and a support with steady pin.

In order to catch bobbin case and to make its motion at both direction with steady pin, on steady pin, be provided with a clamping element near the chuck place, it does tapered, and the diameter of its small end is equal to or less than the minor diameter of shoulder hole, and its outside diameter is greater than the minor diameter of shoulder hole.

If locking element is installed in the groove that is located in the hollow tenon axle of bobbin case by one and constitute at the ring of elastically deformable radially, just can cancel introducing and the high lock slide of operating aspect expense so in its configuration aspects and particularly its motion.

If the strain of locking element can cause by the axially-movable of the bobbin case that can be imported into by steady pin here, and is simple so especially.

In order in receiving system, also to abandon importing into individually the motion that is used for locking element, the supporting arm that is used for installing bobbin case has a fulcrum post respectively, they are provided with a groove on its end relative with its free end, it is corresponding with the groove on the following cover tenon axle, and wherein the diameter of fulcrum post is equivalent to the diameter of cover tenon axle down.

In order fixedly to be supported the shuttle or the bobbin case of the supporting of tenon axle, set a fixing spring that extends in parallel with it at least to each supporting tenon axle, it embeds in the groove that is located on the bobbin case when bobbin case is enclosed within on the fulcrum post.

The present invention other advantage and details by obtaining in the explanation of embodiments of the invention to expression in the accompanying drawings.

In the accompanying drawing:

Fig. 1: by the front view of device of the present invention together with the base plate of Sewing machines;

Fig. 2: the vertical view that the shuttle made from usual way covers down;

Fig. 3 a: be used in by first kind of form of implementation of the bobbin case in the device of the present invention cutaway view together with the locking element of locking;

Fig. 3 b: the front view of pressing the bobbin case of Fig. 3 a;

Fig. 4 a: by the bobbin case of Fig. 3 a cutaway view together with the locking element that unclamps;

Fig. 4 b: the front view of pressing the bobbin case of Fig. 4 a;

Fig. 5 a: be used in by second kind of form of implementation of the bobbin case in the device of the present invention cutaway view together with the locking element of locking;

Fig. 5 b: the front view of pressing the bobbin case of Fig. 5 a;

Fig. 6 a: by the bobbin case of Fig. 5 a cutaway view together with the locking element that unclamps;

Fig. 6 b: the front view of pressing the bobbin case of Fig. 6 a;

Fig. 7 a: the diagram of the retaining element of first kind of form of implementation of grabbing device when its original position;

Fig. 7 b: the diagram of retaining element when its operating position of pressing Fig. 7 a;

Fig. 8 a: the side view of the finger when second kind of structure of grabbing device is in original position together with it;

Fig. 8 b: the grabbing device by Fig. 8 a is in the diagrammatic sketch of the finger of operating position together with it;

Fig. 9 a to 9c: the cutaway view of different forms of implementation that is used for the receiving position of bobbin case in the receiving system;

Figure 10 a to 10c: the different forms of implementation of receiving position that are used for bobbin case in the receiving system are towards the front view of shuttle direction;

Figure 11 a to 11b: be used for cutaway view and the front view of the receiving position of bobbin case in the receiving system towards the direction of observation of shuttle;

Figure 12: the diagram that is used for the receiving system of support;

Figure 13: by the total schematic layout pattern of device of the present invention;

Figure 14: the cutaway view of the another kind of form of implementation of bobbin case;

Figure 15: the vertical view of pressing the bobbin case of Figure 14;

Figure 16 a: the diagram of the retaining element of the third form of implementation of grabbing device when its original position;

Figure 16 b: the diagram of retaining element when its operating position of pressing Figure 16 a;

Figure 17: the details of retaining element;

Figure 18: the receiving position that is used for the bobbin case 101 of the third structure in the receiving system;

Figure 19 a to 19d; Bobbin case 101 is transferred to the schematic flow sheet on the receiving position of receiving system from shuttle.

The base plate 1 of representing Sewing machines among Fig. 1 with chain-dotted line, it has a shuttle 3 around a horizontal axis 2 rotation, it in known manner with (unillustrated pin) co-operation of a lead-in wire, form seam.

Install by method commonly used in shuttle 3 and cover 4, it is used for installing a bobbin case 5, and bobbin case carries a shuttle 6 that holds sewing thread.Although following cover 4 does not change with respect to this known structure of cover down, the front view of the cover 4 that still draws down among Fig. 2 has been represented the of the present invention part relevant with the present invention among the figure.Cover down 4 have one with the axle 2 concentric settings tenon axle 7, with axial restraint bobbin case 5, the tenon axle is provided with a groove 8 in its free end zone, it in known manner with one of the bobbin case 5 locking element acting in conjunction that also will be illustrated later, cover 4 inboards at an upper portion thereof in the zone down and be provided with two steady pins 9 that leave the certain distance setting mutually, they stretch in the hole 10 that is located on the bobbin case circumference when bobbin case 5 is packed down cover into, and at fixing bobbin case 5 radially.

At first being to have cancelled the there in the difference of first kind of form of implementation of the bobbin case 5 shown in Fig. 3 and 4 and already used bobbin case usually can rotating valve.

Have a housing 12 by bobbin case 11 of the present invention, it is provided with a hollow tenon axle 13, and it is used for supporting in known manner shuttle 6.One dovetail slideway that is used to make the locking element of lock slide 14 is set equally in known manner in the front of bobbin case 11, and lock slide can be provided with movably perpendicular to bobbin case 11 longitudinal axis.Lock slide 14 configurations one appreciable backstop 15 in Fig. 3 b and 4b, it acts on the spring 16 that is contained in the housing 12 and with the right-hand pressure of lock slide in Fig. 3 and 4.Its square bending and the right-hand member that forms a hook-shaped lug 17 are positioned at outside the bobbin case 11 on this position of lock slide 14.Therefore shuttle 6 unclamps.

Secondly lock slide 14 has a hole 18, and it makes stairstepping in its left end zone.Form a locator 19 that roughly has the semilune shape in vertical view thus on lock slide 14, it is packed into to cover down at bobbin case 11 and was embedded in 4 o'clock in the groove 8 of tenon axle 7, and makes bobbin case 11 at axial restraint.

In order particularly from cover down, to take out the freedom of motion of back restriction lock slide 14 at bobbin case 11, in lock slide 14, be screwed into the screw of backstop 21 effects together, its free end stretches into one and is located in the hole of (not shown) on bobbin case 11 housings 12 bottom surfaces.

In the lug 17 of the released position of the bobbin case shown in Fig. 4 11 lock slide 14 inserts the breach 20 that is arranged on method commonly used on bobbin case 11 housings 12, and push down the upper flange of shuttle 6, thereby prevent that shuttle from dropping out from bobbin case 11.

As the back also will describe in detail, a grabbing device be used for making lock slide 14 from its at the locked position shown in Fig. 3 in the released position shown in Fig. 4 motion, grabbing device acts directly on the lock slide 14.Be provided with a hole 22 in respect to Fig. 3 and 4 in the left field of lock slide 14, it is provided with in this wise and is shaped for this reason, is overlapped in it and the original hole 23 that just was present on the bobbin case 11.Therefore the grabbing device retaining element that passes these two

holes

22 and 23 can be fitted on the right interface in hole 23 of bobbin case 11.Secondly hole 22 has one and is used for the heavy of grabbing device retaining element and cuts.

At last, by Fig. 3 b and 4b as seen, bobbin case 11 zone at an upper portion thereof has a hole 25, and its side interface is back and fixedly lock 9 actings in conjunction of cover 4 down in bobbin case is packed down cover 4 into, and bobbin case 11 is radially fixed.

In the another kind of form of implementation of the bobbin case shown in Fig. 5 and 6, cancelled valve commonly used so far equally.Compare with first kind of form of implementation of bobbin case 11 and also to have cancelled lock slide 14, and replace by a locking element that constitutes by two-arm spring.

Therefore the bobbin case 31 of second kind of form of implementation has a two-arm spring above-mentioned 32 as locking element, and its one arm 33 distributes with reference to Fig. 5 substantial horizontal and is positioned within the upper rail that is used for lock slide so far.The at first downward-sloping stretching, extension of the free end of this arm 33, and square bending basically form a lug 34.Locked position lug 34 at bobbin case 31 does not pass the breach 20 that is located on bobbin case 31 housings 12, so shuttle 6 unclamps.

The arm 33 of two-arm spring 32 passes through a crosspiece 35 and almost is connected with the second arm 36 of its parallel distribution, and the second arm is positioned at the groove 8 that covers down on the 4 tenon axles 7 at the locked position of bobbin case 31, makes bobbin case 31 axial restraints thus.Arm 36-returns in its right-hand member zone with reference to Fig. 5 b and 6b-and turns back circlewise, so its zone 37 is positioned at the lower guideway that is used for lock slide so far.Therefore the zone 37 of arm 33 and arm 36 with much at one height profile within the guide rail that is used for lock slide so far, and arm 36 it a little above some stretching, extensions.By Fig. 5 and 6 as seen, square bending once more in horizontal plane, and almost be parallel to its distribute under crosspiece 35 is till the hole 23 on bobbin case 31 housings 12 and be locked in the there.If the right areas of arm 33 is by an element supporting of grabbing device, simultaneously the underarm 36 of two-arm spring 32 by another element of grabbing device to pressing down, so as seen as Fig. 5 b and 6b, shift out the groove 8 of arm 36 from tenon axle 7, at this moment the lug of arm 33 moves to the housing 12 of bobbin case 31 simultaneously, and pass breach 20 on the housing 12, be fitted on the upper flange of shuttle 6, and avoid unclamping back shuttle 6 thus and drop out from its inside at bobbin case.

Expression is by first kind of form of implementation of grabbing device 40 of the present invention, first kind of form of implementation of this grabbing device and bobbin case, bobbin case 11 actings in conjunction just in Fig. 7 a and 7b.Grabbing device 40 has two retaining

elements

41,42, and wherein retaining element 41 is fixedlyed connected with a slide plate 43, and slide plate can move along the guide rail 44 that an axle 2 that is parallel to shuttle 3 is arranged, and can not rotate on guide rail.Retaining element 41 is provided with a steady pin 45, it when its operating position and boundary face in the hole 23 on bobbin case 11 housings 12 fit.Retaining element 42 is bearing on the retaining element 41 pivotally and has an attaching clamp 46, and along vertically seeing of two retaining elements, it retreats slightly with respect to steady pin 45, and embedding the heavy of bobbin case 11 cuts in 24 when its operating position.

The slide plate 43 that for this reason carries two retaining

elements

41,42 moves along guide rail 44 by a drive unit, and this drive unit supports and make working cylinder or magnet 48 by the framework 47 of a fixed-site.Here working cylinder/magnet 48 is by toggle link 49 effects that are bearing on the framework 47, and toggle link acts on the slide plate 43 by pin/elongated hole connection, and slide plate overcomes the power of spring 50 to shuttle 3 motions, thereby also to bobbin case 11 motions.Terminal point retaining element 41 in this lengthwise movement arrives its operating position, and the hole of passing on the lock slide 14 22 is fitted on the boundary face that is located at the hole 23 on bobbin case 11 housings 12.Though at this moment attaching clamp 46 is positioned within the hole 22 of lock slide 14 equally, also not in bobbin case heavy cuts 24 zone.

During can acting on the gyration of retaining element 42 on the retaining element 42 and that caused by the magnet of retaining element 41 supporting by one subsequently, attaching clamp 46 enters heavy 24 the zone of cutting.At this moment attaching clamp 46 is fitted on the boundary face in the hole 22 that is located on the lock slide 14 simultaneously, make lock slide 14 produce transverse movement, make the groove 8 of its locator 19 on covering 4 tenon axles 7 down on the one hand thus and shift out, make the lug 17 of lock slide 14 pass the inside that breach 20 moves on to bobbin case 11 housings 12 on the other hand.Prevent simultaneously that thus shuttle 6 from dropping out from bobbin case 11.

Because the steady pin 45 of retaining element 41 passes the hole that is located on the lock slide 14 22 and inserts in the hole 23 that is located on bobbin case 11 housings 12 during the transverse movement of the lock slide 14 that the gyration by attaching clamp 46 causes, and be fitted on the boundary face in hole, bobbin case 11 overcomes side force during lock slide 14 transverse movements supported; Avoid bobbin case 11 stuck on tenon axle 7 thus.So the lock slide 14 of being clamped by two retaining

elements

41,42 keeps its invariant position during the grabbing device setback subsequently that the spring 50 by off-load causes.Bobbin case 11 moves to the replacing position that is located at shuttle 3 receiving system nearby with the axle 2 parallel tracks of shuttle 3 along one in this position, and is fixed on the there with the method that the back also will illustrate.

Expression is by second kind of form of implementation of grabbing device 60 of the present invention in Fig. 8 a and 8b, second kind of form of implementation of it and bobbin case, and bobbin case 31 actings in conjunction just, the locking element of this bobbin case is made of two-arm spring 32.Have one and comprise two pin extension fixtures 63 of 61,62 in order to unclamp two-arm spring 32 grabbing devices 60, it can move to changing the position to shuttle or from shuttle from changing the position by means of a slide plate 65 that can move along the guide rails that the axle 2 that is parallel to shuttle 3 is arranged equally.Because be used for realizing that the driving device structure aspect of first kind of form of implementation of the drive unit of slide plate 65 lengthwise movements and grabbing device can be identical, will relate this drive unit below.Slide plate 65 also moves along guide rail 44 according to this drive unit, and in the above described manner by working cylinder or magnet 48 or spring 50 drives.

Pin 61 is rigidly fixed on the slide plate 65 and a step 66 is arranged, and is bearing in slide plate 65 pivotally or sells on 61 and sell 62.Arm 33 actings in conjunction of pin 61 or its step 66 and two-arm spring 32.Pin 61 also is provided with a manipulation device, and for example it can be made of a magnet 67, so that sell 62 to turning down.This gyration can overcome the power of a spring that does not specifically draw to be carried out, and spring makes pin 62 return its original position again then.Pin 62 has a seal face 68, arm 36 actings in conjunction of it and two-arm spring 32.By Fig. 8 a and 8b as seen, be provided with a magnet 69 on slide plate 65, its iron core is parallel to guide rail 44 and arranges.

Make slide plate 65 to shuttle 3 motions in order to unclamp the power that bobbin case 31 working cylinders or magnet 48 overcomes spring 50.Occupy such position at the operating position of extension fixture pin 61, be fitted on the bottom surface of arm 33 at this position step 66.Pin 62 is to turning down.And with its seal face 68 with arm 36 to pressing down, arm 36 is shifted out from the groove 8 of tenon axle 7, thereby bobbin case is unclamped.Meanwhile the lug 34 that makes arm 33 by the active force of seal face on arm 36 makes the lug 34 and the flange of shuttle 6 fit thus, thereby prevent that shuttle 6 from dropping out from bobbin case 31 to bobbin case 31 internal motions.The iron core of magnet 69 moves to the front of the bobbin case 31 that unclamps now, makes that can drive bobbin case in the recoil movement process of the slide plate of following 43 moves on to the replacing position together.

Have a receiving system 70 that is used for bobbin case by device of the present invention, it is equipped with a support 71.Support is provided with many receiving positions 73 that are used for bobbin case, and can be around axle 72 revolutions.This 72 difference according to situation can be arranged in the corresponding Sewing machines horizontal or vertically, and importantly bobbin case is changed on the position at it and occupied corresponding to its position in shuttle 3.This means, the maintenance mechanism that receiving position 73 and its are used for bobbin case is provided with in this wise in support 71 or forms, make the longitudinal axis of bobbin case change 2 a coaxial distribution of position and shuttle 3 at it, and bobbin case moves axially so far away with respect to its position in shuttle 3 in the replacing position, makes to exist one not hinder normal minimum range of sewing between shuttle 3 and bobbin case at that time or the support 71.

The axle 72 of receiving system 70 is parallel to axle 2 settings of shuttle 3 in the form of implementation that the present invention represents in partial view in detail.Here receiving system 70 is by a slide plate 74 supporting, and it is one can be arranged on the slide plate 74 that the guide post on the support that does not draw in detail is provided with movably in vertical direction along one.Because slide plate 74 also is used for bolster 72, receiving system 70 also can if the position that exists in Sewing machines is not enough, can move up and down except rotatablely moving so around axle 72 rotations.One magnet 80 by the support supporting of not drawing in detail is used for driving slide plate 74, and magnet directly or by a stepping transmission device acts on the slide plate.

Shown in form of implementation medium-height trestle 71 be provided with four supporting arms 75, so it one has four receiving positions 73 that are used for bobbin case.Support 71 is pressed beat around axle 72 each half-twists, each receiving position 73 progressive formula ground is arrived change the position.Certainly support 71 also can have four above receiving positions 73 and move by corresponding beat.

Expression is used for the different possibilities of special construction of the receiving position 73 of bobbin case 11 in Fig. 9 a to 9c and 10a to 10c.

Supporting arm 75 has a fulcrum post 76 in by the form of implementation of the receiving position 73 of Fig. 9 a and 10a, and its diameter is equivalent to the diameter of cover 4 tenon axles 7 down basically, thus bobbin case 11 with covering tolerance conditions lower support same in 4 down on fulcrum post 76.At its regional internal support pin 76 eccentric boss 77 that stretch into lock slide 14, it is inserted in the hole 18 of lock slide 14.If therefore retaining

element

41,42 or steady pin 45 and attaching clamp 46 shift out from its hole 22, lock slide 14 keeps its position so far so, breach 20 on these position lug 17 insertion bobbin cases 11 housings 12, push down in shuttle 6 flanges, and shuttle is fixed in the bobbin case 11.For the fixedly radial position of bobbin case 11, be provided with two pins 78, they are installed on the boss 79 of support 71 and perpendicular to the axis arranged of bobbin case 11; Their mutual distances are equivalent to the distance between cover 4 steady pins 9 down.Pin 78 inserts in the hole 25 of bobbin cases 11, make bobbin case change the position with covering mode identical in 4 down radially fixing.

Especially by Figure 10 a as seen, supporting arm 75 is positioned at the next door in bobbin case 11 holes 22, so retaining

element

41,42 can be moved bobbin case 11 on the fulcrum post 76 unobstructedly.

Supporting arm 75 has a fulcrum post 81 in by the form of implementation of the receiving position 73 of Fig. 9 b and 10b, and its diameter also is equivalent to the diameter of cover 4 tenon axles 7 down basically.Replace eccentric boss 77 fulcrum posts 81 to have the muscle sheet 82 of a bending, it is parallel to the tracks of slide plate 43 arranges, and has a gathering sill 83 that is used for the lug 17 of bobbin case.Put 40 and move on to bobbin case 11 on the fulcrum post 81 fully and unclamp bobbin case 11 if get thus to apply to install, just lock slide 14 remains on position of its locking shuttle 6 so.The radial position of bobbin case 11 simultaneously is fixing by the lug 17 that embeds gathering sill 83.

Especially by Figure 10 b as can be seen, supporting arm 75 also is positioned at the next door in bobbin case 11 holes 22 here, so retaining

element

41,42 can be moved bobbin case 11 on the fulcrum post 81 to unobstructedly.

Be provided with a sleeve 84 on the supporting arm 75 in by the form of implementation of the receiving position 73 of Fig. 9 c and 10c, its internal diameter is equivalent to the external diameter of bobbin case 11 basically.Sleeve 84 opens in its end towards shuttle 3; Its dorsad the end face upper bush 84 of shuttle 3 can establish a bottom surface 85, it has a hole 86 that is used for making the retaining

element

41,42 of grabbing device 40 to pass through.Sleeve 84 has a gathering sill 83 that is used for the lug 17 of lock slide 14 within it on the side.If grabbing device 40 moves on to bobbin case 11 fully in the sleeve 84 and with bobbin case 11 and unclamps here, lock slide 14 also remains on the position of its locking shuttle 6 so.The radial position of bobbin case 11 is simultaneously fixed by the lug that embeds in the gathering sill 87.

Expression one is used for the structure of accepting position 73 of bobbin case 31 within receiving system 70 in Figure 11 a and 11b.Here also be provided with a bearing angle 88, its diameter is equivalent to the diameter of cover 4 tenon axles 7 down basically, so bobbin case 31 pictures are covering tolerance conditions lower support same in 4 down on fulcrum post 88.Fulcrum post 88 has a prismatic boss 89 on the end of shuttle 3 dorsad at it, and its width is equivalent to the width of the lock slide 14 of bobbin case 31 basically.In case bobbin case 31 is enclosed within on the fulcrum post 88 by the

61,62 of grabbing device 60, its boss 89 embeds in the guide rail that is used for lock slide 14 that is located on the bobbin case 31; Therefore the radial position of bobbin case 31 is fixed.Because at this moment boss 89 stops the two-arm spring 32 that occupies its locked position to enter the position that tool unclamps shuttle 6 by means of a recoil movement, the lug 34 of arm 33 also remains on its position that prevents that shuttle 6 from dropping out from bobbin case 31.

In order to make receiving system 70 be provided with a drive unit 90 (Figure 12) steppingly around the angle value of axle 72 rotations one corresponding to predetermined receiving position 73 quantity, it has a magnet 91.A hinged slide plate 92 on the iron core of magnet 91, it can be along a guide rail movement that is made on arc 93 the horizontal zone.Guide rail can constitute at arc 93 grooves that process 94 by one, and the lower end of slide plate 92 embeds in this groove.Slide plate 92 has one and drives pawl 95, it and index dial 97 actings in conjunction that are installed on the axle 72 that supports receiving system 70.Shown in the form of implementation magnet 91 in each pitch, overcome end one by one and act on two impulse strokes of masterpiece that the other end on arc 93 acts on the spring 98 on the slide plate 92, wherein index dial 97 is locked at that time the position by the locking steel ball 99 in the respective dimple 100 on the spring-loaded embedding index dial 97 behind each calibration stroke.

Following process description is from the state shown in Figure 13, is respectively charged into one by four receiving positions of this figure receiving system 70 and has the bobbin case 11 of full shuttle 6, and do not have bobbin case in the shuttle 3.The lock slide 14 of bobbin case 11 is occupied the position that it locks each shuttle 6.Receiving system 70 is positioned at the nearside of shuttle 3 together with its support 71, wherein place on the pin 76,78 or the axle of the bobbin case 11 of a cover in 84 and shuttle 3 spool concentric in change bit, and grabbing device 40 together with its retaining element 41,42-with reference to Figure 13-be positioned at left side of support 71.If the shuttle 6 of all bobbin cases 11 of sewing process by before this all uses up, and support 71 is positioned at the bobbin cases 11 that " loaded " position outside the Sewing machines is loaded onto four full shuttles 6 of band one, this state will occur so.

Move right at its guide rail 44 from this state slide plate 43, pass hole 22 on the lock slide 14 until the steady pin 45 of retaining element 41 and enter hole 23 on the bobbin case 11.Its attaching clamp 46 of gyration by the retaining element 42 that then imported into by magnet 51 arrives that lock slide 14 are heavy cuts in 24 the zone.The bobbin case of catching like this 11 leaves corresponding fulcrum post 76 or 81 or overlap 84 when slide plate 43 continues lengthwise movements, push shuttle 3 or its down in the cover 4, and here received by tenon axle 7.The lug 17 of lock slide 14 is also always on the position of its locking shuttle 6; Attaching clamp yet is positioned at it and allows bobbin case 11 to move on on the position on the tenon axle 7, so bobbin case can move into shuttle 3 or its down in the cover 4 fully, and occupies its sewing position.

The attaching clamp 46 of retaining element 42 unclamps by magnet 51 before the return movement of slide plate 43 begins, and attaching clamp is shifted out from heavy the cutting 24 of lock slide 14.After retaining

element

41,42 was return from the zone of lock slide 14, the spring 16 that is installed in the bobbin case 11 promoted the locked position that lock slide 14 enters its locking bobbin case 11, and the lug 17 of lock slide 14 moves to the position that it unclamps shuttle 6 simultaneously.Slide plate 43 also returns to its original position.

The support 71 of receiving system 70 remains on this position always and runs out until shuttle 6 in sewing process subsequently.Therefore support 71 is in that to change locational receiving position be empty.

Again move to shuttle or bobbin case 11 in order to change bobbin case 11 slide plates 43 that have hollow bobbin.Retaining element 41 passes hole 22 on the lock slide 14 in entering the hole 23 that is located on bobbin case 11 bottom surfaces, and here fits with a side interface in hole 23.Magnet 51 makes retaining element 42 revolution, makes its attaching clamp 46 change that lock slide 14 is heavy cuts in 24 the zone over to thus.Lean against at retaining element 42 during this gyration on the side interface in hole 22.And promote lock slide 14 is unclamped tenon axle 7 to it position; At this moment the lug 17 of lock slide 14 moves to the position of its locking shuttle 6, and prevents that shuttle from dropping out from bobbin case 11.The bobbin case of catching like this 11 can move to the empty receiving position 73 of changing the position that is in of support 71 during the return movement of the slide plate 43 that begins now.As long as support 71 or its receiving position 73 are done to such an extent that be used for receiving bobbin case 11 by Fig. 9 c, therefore have a sleeve 84, the retaining element 41,42 of grabbing device 40 just passes sleeve 84 so, and corresponding bobbin case 11 moves in the sleeve 84.At this moment the lug that is in its locked position that is used for shuttle 6 17 of lock slide 14 embeds in the groove 87 of sleeve 84, and bobbin case 11 is fixed in the sleeve 84, prevents its rotation.Because the internal diameter of sleeve 84 is equivalent to the external diameter of bobbin case 11 basically, and lock slide 14-can not move right with reference to Fig. 9 c-, if retaining element 41,42 shifts out from its inside, just lock slide 14 is stayed it corresponding to the released position of unclamping tenon axle 7 so.By receiving position quantity support 71 and disposed thereon roughly correspondingly the gyration of the coupling bobbin case 11 that has a hollow bobbin 6 shift out from changing the position, the bobbin case 11 that has full shuttle 6 simultaneously enters changes the position.

Be from such state above, if promptly the shuttle 6 of all bobbin cases 11 all uses up, just the bobbin case 11 that band is expired shuttle is changed or loaded onto again to support 71 with another support 71 of loading onto the bobbin case 11 that has full shuttle 6 outside Sewing machines so.Certainly for support 71 second a replacing position that has by grabbing

device

40,60 of the present invention can be set also.This second replacing position can make the bobbin case 11 that has hollow bobbin after leaving the first replacing position near setting after the above-mentioned replacing position, changes the position second and can use band to expire bobbin case 11 replacings of shuttle 6 immediately.

The expression bobbin case also has the third form of implementation of the grabbing device that matches with it in Figure 14 to 19.

In this other forms of implementation of bobbin case, also cancelled valve commonly used so far.Also cancelled the lock slide in first kind of form of implementation, and replaced with a locking element, it with preceding two kinds of forms of implementation in different being arranged in the bobbin case of lock slide.

Bobbin case 101 shown in Figure 14 and 15 has a housing 102, and so that a common shuttle 6 to be installed, housing is in its end face upper shed towards common following cover 4, and its dorsad down side of cover 4 by a bottom surface 103 sealings.The outside of bottom surface 103 is configured for the sliding surface of sewing thread winding one arm in mode commonly used.The housing 102 of bobbin case 101 has a hollow tenon axle 104 usually, and its internal diameter is equivalent to the diameter of cover 4 tenon axles 7 down.Leave the steady pins 9 that certain distance is provided with mutually in order to prevent that cover 4 is equipped with two with known method under bobbin case 101 rotations, they are packed into to cover down at bobbin case 101 and embedded in the hole 10 that is located on the bobbin case circumference in 4 o'clock, and make bobbin case 101 radially fixing.In order to make bobbin case in its vertical locking, following cover 4 has a tenon axle 7, and it establishes a groove 8 with usual way in its free end zone, locking element 105 actings in conjunction of it and bobbin case 101.

Locking element 105 is done and is circularized, and can by O shape circle 106 or by one relatively the ring spring 107 of easy deformation or expansion constitute, it is contained in the groove 108 on the hollow tenon axle 104, its internal diameter is slightly less than the diameter of tenon axle 7.Wherein the slightly larger in diameter of groove 108 is in the external diameter of elasticity locking element 105 or O shape circle 106 or ring spring 107.If bobbin case 101 is enclosed within down on the tenon axle 7 of cover 4, locking element 105 is at first expanded and strain by tenon axle 7 so.In case locking element 105 is positioned at the zone of tenon axle 7 grooves 8, locking element 105 just becomes again in the groove 8 of its original position and shape and loose tongue axle 7, makes bobbin case 101 at axial restraint.

By Figure 14 and 15 as seen, be provided with 4 shoulder holes 109 altogether on bottom surface 103, they are parallel to shuttle 6 longitudinal axis and arrange.The reason that 4 shoulder holes of 103 inboards also will illustrate for the back bottom its bigger diameter was positioned at is arranged on the bight of a rectangle or positive aspect.Be provided with two radially grooves 110 of positioned opposite in housing 102 upper bottom portion 103 zones, the fixing spring of grabbing device embeds in this groove when shuttle 6 takes out from bobbin case 101.The side of hollow tenon axle 104 is provided with a hole 111 in bottom 103, it under cover 4 and to be used for preventing rotation when taking out bobbin case 101.

For the structure and the operation principle of another kind of form of implementation that grabbing device is described are traced back to first kind of above-mentioned grabbing device 40.Wherein the identical part of the part with above-mentioned grabbing device 40 of this form of implementation of grabbing device 120 is equipped with the pictorial symbolization identical with grabbing device 40.

Can be along fixing a support 121 on the mobile slide plate 43 of guide rail 44 (Figure 16 a, 16b), it be used for installing 4 steady pins 122 altogether.Steady pin 122 mutually with respect to the relative position of hollow tenon axle 104 corresponding to shoulder hole 109 mutually with respect to the layout and the relative position of hollow tenon axle 104.Guarantee thus, when slide plate 43 whole 4 steady pins 122 when the motion of shuttle 3 directions is enough far away can insert in 4 shoulder holes 109 simultaneously.Basically being parallel to each other the steady pin of arranging 122 in its original position can be respectively around one 123 revolution on support 121, and axle 123 can level or vertical the setting.In the embodiment shown they can be respectively around one 123 revolution, but axle 123 levels or vertical the setting.Axle 123 is horizontally disposed with in the embodiment shown, so steady pin 122 can turn round in a vertical plane.For steady pin 122 can be turned round around axle 123, each steady pin 122 sets a magnet 125.Magnet 125 is provided with like this, makes two steady pins that adjoin each other in same vertical plane 122 to deviate from mutually or move toward one another.

Fix a fixing spring 124 under the steady pin 122 on support 121 one once with reference to Figure 16 a, 16b, its front end curves circular arc.Here the layout of fixing spring 124 on support 121 is definite like this, make when slide plate 43-with reference to Figure 16 a, 16b-when bobbin case 101 moves enough far, fixing spring 124 just embeds in the groove 110 below the bobbin case 101, and not only prevents the shuttle rotation but also prevent that shuttle from dropping out from bobbin case 101.

The front end of steady pin 122 is established a convex shoulder 126 (Figure 17) respectively, and it has an anchor ring as driving section 127.The external diameter of driving section 127 is slightly less than the diameter of bobbin case 101 shoulder holes 109, so convex shoulder 126 can insert in the shoulder hole easily.Do tapered slightly in order to make convex shoulder 126 insert a plurality of shoulder hole 109 its front areas more easily.Be provided with one as the taper of clamping element 128 on the 127 a distance convex shoulders 126 of driving section, its end diameter is slightly less than the minor diameter of shoulder hole 109, so clamping element 128 can only enter in the aperture a little.

The structure of the receiving position 73 that the special construction with bobbin case 101 of expression receiving system 70 is complementary among Figure 18.

Here supporting arm 75 is provided with a fulcrum post 130, and its structure is equivalent to the structure of the fulcrum post 76,81 shown in Fig. 9 a and the 9b.Therefore fulcrum post 130 has the diameter that is equivalent to cover down the diameter of 4 tenon axles 7.Be provided with a groove 131 at its stub area internal support pin 130 in the face of supporting arm 75, itself is equivalent to cover down the groove 8 on the 4 tenon axles 7.Therefore bobbin case 101 is so that same method is bearing on the fulcrum post 130 on the 4 tenon axles 7 covering down.Here in order to prevent that bobbin case 101 from rotating on fulcrum post 130, in supporting arm 75 upper support pins, 130 sides or upper fixed one fixing spring 132, its free end is slight curving in the arc-shaped and when bobbin case 101 is enclosed within on the fulcrum post 130, embed bobbin case 101 housings 102 in the groove 110.Prevent also that thus shuttle 6 from dropping out from bobbin case 101, and prevent that bobbin case 101 from skidding off fulcrum post 130.More convenient for bobbin case 101 is enclosed within on the fulcrum post 130, its free end is provided with a type conical bench 133.Can establish at last one and be parallel to the pin 134 that fulcrum post 130 is arranged on supporting arm 75, it embeds in the hole 111 that is located on bobbin case 101 bottom surfaces 103 when bobbin case 101 is enclosed within on the fulcrum post 130.

For the operation principle of the third form of implementation that bobbin case 101 and corresponding retaining element are described with reference to Figure 19 a to 19d.Here from such state, promptly the shuttle in shuttle 36 has used up, and the axle that is located at fulcrum post 130 and shuttle 3 on the supporting arm 75 of receiving system 70 is concentric, and above do not have bobbin case 101 grabbing devices 120 be positioned at it-with respect to Figure 19 a

Original position on supporting arm 75 left sides.

Other to shuttle 3 motions in order to grasp shuttle slide plate 43 at supporting arm 75.At this moment steady pin 122 occupies its position that is parallel to each other, and mobile so far away in shoulder hole 109 by slide plate 43, makes the anchor ring of driving section 127 be positioned at the zone (Figure 19 b) of shoulder hole 109 enlarged.The bottom surface 103 of bobbin case 101 is between each driving section 127 and steady pin 122 each clamping element 128 now.At this moment fixing spring 124 embeds in the following groove 110 of bobbin cases 101 housings 102, and during the axially-movable of the bobbin case 101 that after this carries out fixing shuttle 6.

By magnet 125 expansions, make driving section 127 hook the end of shoulder hole 109 (Figure 19 c) at this fixed-site pin 122.

Groove 8 under the elasticity locking element 105 that is made of O shape circle 106 or ring spring 107 during the return movement of the slide plate 43 that carries out now slightly outwards squeezes owing to the setback of steady pin 122 and deviates from the cover 4 tenon axles 7.The bobbin case of catching like this by steady pin 122 101 can under cover 4 and shift out, and be enclosed within on the fulcrum post 130 of receiving system 70.If at this moment the locking element 105 of strain is positioned at the opposite of groove 131 on the fulcrum post 130, just in its card entry slot 131, so bobbin case 101 fulcrum post 130 with covering 4 tenon axle 7 down on the same earth's axis to fixing.Because the pin that at this moment is located on the supporting arm 75 embeds in the hole 111 that is located on bobbin case 101 bottom surfaces 103, bobbin case 101 is also radially fixed.The fixing spring 132 that is located in addition on the supporting arm 75 passes the last groove 110 embedding bobbin cases 101 that are located on the housing 102, makes that bobbin case 101 is also radially fixing thus on the one hand, prevents that on the other hand shuttle 6 from dropping out.

After steady pin 122 came back to its parallel position, grabbing device 120 came back to its original position by its slide plate 43, in this position no matter be that steady pin 122 or fixing spring 124 all are positioned at outside the bobbin case 101.

If a bobbin case 101 that a full shuttle 6 is housed should be by grabbing device 120 from fulcrum post 130 shuttle 3 or its cover 4 down of packing into, so at first slide plate 43 drives with its parallel position steady pin 122 so far to shuttle 3 directions, is located at until driving section 127 in receiving system 70 till the extended area of the shoulder hole 109 on the bobbin case 101 on the fulcrum post 130.The bottom surface 103 of bobbin case 101 is between the clamping element 128 of driving section 127 and steady pin 122 again thus.This state is equivalent to the state by Figure 19 c.Because can not enter the shoulder hole 109 of bobbin case 101 at the clamping element 128 from steady pin 122 between continuation moving period of the slide plate 43 here, steady pin 122 does not need expansion.But this just makes driving section 127 occupy shoulder hole 109 decentraction with bobbin case 101 thus, thereby it is suitable that bobbin case 101 can be only from the degree that steady pin 122 falls down between 3 moving periods to shuttle at slide plate 43.

Claims

1. what be used for double-lock type stitch sewing or embroidery machine is used for changing device with the bobbin case (5) of shuttle (6); Bobbin case is by tenon axle (a 7) supporting that is arranged in shuttle (3) lower cover (4); Described device have receiving system (70) and with the support (71) of many receiving positions that adjoin each other for bobbin case (5) be used for the bobbin case (5) of the full shuttle (8) of band transfer to from the replacing position of receiving system (70) shuttle (3) upper and be used for that the bobbin case (5) of band hollow bobbin (6) is transferred to from shuttle (3) that the replacing of receiving system (70) is locational can be along one from shuttle (3) to the grabbing device (40) of changing the guide rail (44) that stretches the position and moving

It is characterized by:

Be used for grabbing device (40,60,120) guide rail (44) is arranged essentially parallel to shuttle (3) axle (2) and arranges, the replacing position of receiving system (70) is arranged on the side of shuttle (3) in this wise, make bobbin case (11) the axle within the replacing position of receiving system with its coaxial distribution in position within shuttle (3).

2. by the device that is used for double-lock type stitch sewing or embroidery machine of claim 1, it is characterized by: receiving system (70) can be around one (72) rotation, and this axle is parallel to shuttle with a certain distance from shuttle (3) and stretches.

3. by the device that is used for double-lock type stitch sewing or embroidery machine of claim 1, it is characterized by: receiving system (70) can be around a rotation, and this axle and shuttle (3) axle (2) intersects vertically.

4. be used for the device of double-lock type stitch sewing or embroidery machine by claim 1, it is characterized by: receiving system (70) can be along vertical and/or horizontal motion.

5. by the device that is used for double-lock type stitch sewing or embroidery machine of claim 1, its be located at down the tenon axle that is used for fixing bobbin case in the cover in its free end zone, have one with the coefficient groove of lock slide that is arranged on movingly on the bobbin case, it is characterized by: grabbing device (40) has two retaining elements (41 that are used for bobbin case (31) that can be parallel to the motion of shuttle (3) axle on a slide plate (43), 42), wherein first retaining element (41) has a steady pin (45), it can insert in the hole (23) that is located on the bobbin case (31) along the direction of motion of grabbing device (40), second retaining element (42) is provided with an attaching clamp (46), it act on lock slide (14) go up ground can be additionally perpendicular to the longitudinal axis motion of bobbin case (31).

6. by the device that is used for double-lock type stitch sewing or embroidery machine of claim 5, it is characterized by: second retaining element (42) is bearing on first retaining element (41) pivotally.

7. by the device that is used for double-lock type stitch sewing or embroidery machine of claim 5, it is characterized by: hole (23) are located on the bottom surface of bobbin case (31).

8. by the device that is used for double-lock type stitch sewing or embroidery machine of claim 5, it is characterized by: the vicinity of (23) has heavy cut (24) to lock slide (14) in the hole, and the attaching clamp (46) of second retaining element (42) hooks this heavy cutting from behind.

9. by the device that is used for double-lock type stitch sewing or embroidery machine of claim 5, its be located at down the tenon axle that is used for fixing bobbin case in the cover in its free end zone, have one with the coefficient groove of locking element that is located at movingly on the bobbin case, it is characterized by: locking element is made has two arms (33 that are parallel to each other basically and arrange, 36) two-arm spring (32), wherein one arm (36) is positioned at the groove (8) of tenon axle (7) at the locked position of locking element, and can transfer to its released position by grabbing device (60).

10. by the device that is used for double-lock type stitch sewing or embroidery machine of claim 9, it is characterized by: two-arm spring (32) is the free end square bending basically of one arm (33) in addition, and two-arm spring (32) stretches into the installation cavity that is used for shuttle (6) of bobbin case (31) when being in the released position in.

11. the device that is used for double-lock type stitch sewing or embroidery machine by claim 1, it is characterized by: grabbing device (60) have one be used for two-arm spring (32) be with two the pin (61,62) extension fixture (63), they can be parallel to the slide plate (65) of axle (2) motion of shuttle (3) at the arm (33 of two-arm spring (32) by one, 36) motion between, the arm (36) that wherein unclamps bobbin case (31) can additionally move perpendicular to the tracks of slide plate (65).

12. the device that is used for double-lock type stitch sewing or embroidery machine by aforesaid right requirement 11 is characterized by: grabbing device (60) has the magnet (69) by slide plate (65) supporting, the end face acting in conjunction of it and bobbin case (31).

13. by the device that is used for double-lock type stitch sewing or embroidery machine of claim 1, it is characterized by: the support (71) of receiving system (70) removably is connected with receiving system.

14. the device that is used for double-lock type stitch sewing or embroidery machine by claim 13 is characterized by: the support of receiving system (71) can be located ground and can be locked by means of a Quick Connect Kit and its in receiving system.

15. the device that is used for double-lock type stitch sewing or embroidery machine by claim 1 is characterized by: grabbing device (40,60) can be from a side direction shuttle (3) motion of the shuttle dorsad (3) of support (71).

16. the device that is used for double-lock type stitch sewing or embroidery machine by claim 1 is characterized by: support (71) have the bobbin case of being used for (11,31) support (71) in/go up the mechanism that the position is fixed exactly.

17. the device that is used for double-lock type stitch sewing or embroidery machine by claim 16, it is characterized by: be used for fixing bobbin case (11,31) mechanism arranges and leaves mutually that by two perpendicular the pin (78) that certain distance is provided with constitutes, they stretch in the hole (25) on the bobbin case (11,31).

18. the device that is used for double-lock type stitch sewing or embroidery machine by claim 17, it is characterized by: pin (78) mutual distance be equivalent to be arranged on play cover (4) interior be used for bobbin case (11, the distance of steady pin 31) (9), be used for fixing it on the bobbin case (11,31) and the coefficient hole of steady pin (9) (25) constitutes the hole.

19. the device that is used for double-lock type stitch sewing or embroidery machine by claim 16, it is characterized by: fixedly the support (71) of bobbin case (11) has a plurality of muscle sheets (82) that its tracks is arranged that are arranged essentially parallel to, and wherein each muscle sheet (82) is provided with a gathering sill (83) that is used for bobbin case (11) locking element (14).

20. the device that is used for double-lock type stitch sewing or embroidery machine by claim 16, it is characterized by: the support (71) that is used for supporting bobbin case has many its tracks covers (84) that arrange, the space certain distance that are arranged essentially parallel to, they be respectively equipped with one with the coefficient gathering sill of locking element (14) (87) of bobbin case (11).

21. by the device that is used for double-lock type stitch sewing or embroidery machine of claim 1, it is characterized by: the support (71) that is used for supporting bobbin case (11) has fulcrum post (76), its diameter is equivalent to the diameter of cover (4) tenon axle (7) down.

22. by the device that is used for double-lock type stitch sewing or embroidery machine of claim 1, it is characterized by: the support (71) that is used for supporting bobbin case (11) has cover (84), and its internal diameter is equivalent to the external diameter of bobbin case (11).

23. the device that is used for double-lock type stitch sewing or embroidery machine by claim 1, its be used for fixing under being located at of bobbin case the tenon axle in the cover in its free end zone, have one with the coefficient groove of locking element (105) that is located on the bobbin case, it is characterized by: grabbing device (120) has many steady pins that are used for bobbin case (101) (122) that can be parallel to shuttle (3) axle (2) motion in slide plate (43), they can insert be located at that bobbin case (101) bottom surface (103) is gone up and with the hole (109) of the substantially parallel layout of its longitudinal axis, and can in hole (109), the direction of motion perpendicular to grabbing device (120) move, to catch bobbin case (101).

24. by the device that is used for double-lock type stitch sewing or embroidery machine of claim 23, it is characterized by: hole (109) make shoulder hole, its macropore feeds the installation cavity that is used for shuttle (6) of bobbin case (101).

25. the device that is used for double-lock type stitch sewing or embroidery machine by claim 23 is characterized by: steady pin (122) can turn round with its parallel longitudinal or vertically arranged axle (123) around one respectively.

26. the device that is used for double-lock type stitch sewing or embroidery machine by claim 23, it is characterized by: steady pin (122) sets a fixing spring (124) that is used for shuttle (6) at least, it is arranged essentially parallel to steady pin and arranges, and embeds in the groove (110) that is located on bobbin case (101) housing (102) when move hole (109) at steady pin (122).

27. the device that is used for double-lock type stitch sewing or embroidery machine by claim 26 is characterized by: fixing spring (124) and steady pin (122) are by common support (a 121) supporting, and this support is connected with slide plate (43).

28. the device that is used for double-lock type stitch sewing or embroidery machine by claim 24, it is characterized by: go up with drive element (127) adjacent at steady pin (122) and be provided with a clamping element (128), it does tapered, its end diameter is equal to or less than the minor diameter of shoulder hole (109), and its outside diameter is greater than the minor diameter of shoulder hole (109).

29. the device that is used for double-lock type stitch sewing or embroidery machine by claim 23, it is characterized by: locking element (105) is by a ring (106,107) constitute, it is installed in the groove (108) that is located on the hollow tenon axle of bobbin case (101), and can be out of shape at radial elastic.

30. the device that is used for double-lock type stitch sewing or embroidery machine by claim 29 is characterized by: the strain of locking element (105) can cause by the axially-movable of the bobbin case (101) that imported into by steady pin (122).

31. the device that is used for double-lock type stitch sewing or embroidery machine by claim 1, it is characterized by: support (71) has the supporting arm (75) that is used for supporting bobbin case (101), supporting arm (71) has a fulcrum post (130) respectively, it establishes a groove (108) in its free-ended stub area dorsad at it, it is equivalent to cover down the groove (8) on (4) tenon axle (7), and wherein the diameter of fulcrum post (130) is equivalent to the diameter of cover (4) tenon axle (7) down.

32. the device that is used for double-lock type stitch sewing or embroidery machine by claim 31, it is characterized by: fulcrum post (130) sets a fixing spring (132) that extends abreast with it at least separately, and it is enclosed within bobbin case (101) and embeds in the groove (110) that is located on the bobbin case when fulcrum post (130) is gone up.