CN102926142A - Multi-thread chain stitch sewing machine with seam ravel preventing apparatus - Google Patents

Multi-thread chain stitch sewing machine with seam ravel preventing apparatus Download PDF

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Publication number
CN102926142A
CN102926142A CN2012102791997A CN201210279199A CN102926142A CN 102926142 A CN102926142 A CN 102926142A CN 2012102791997 A CN2012102791997 A CN 2012102791997A CN 201210279199 A CN201210279199 A CN 201210279199A CN 102926142 A CN102926142 A CN 102926142A
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CN
China
Prior art keywords
needle plate
looper
wire
seams
mentioned
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Granted
Application number
CN2012102791997A
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Chinese (zh)
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CN102926142B (en
Inventor
桥本诚冶
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Yamato Sewing Machine Mfg Co Ltd
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Yamato Sewing Machine Mfg Co Ltd
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Publication of CN102926142A publication Critical patent/CN102926142A/en
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Publication of CN102926142B publication Critical patent/CN102926142B/en
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    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B1/00—General types of sewing apparatus or machines without mechanism for lateral movement of the needle or the work or both
    • D05B1/08—General types of sewing apparatus or machines without mechanism for lateral movement of the needle or the work or both for making multi-thread seams
    • D05B1/10—Double chain-stitch seams
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B3/00—Sewing apparatus or machines with mechanism for lateral movement of the needle or the work or both for making ornamental pattern seams, for sewing buttonholes, for reinforcing openings, or for fastening articles, e.g. buttons, by sewing
    • D05B3/02—Sewing apparatus or machines with mechanism for lateral movement of the needle or the work or both for making ornamental pattern seams, for sewing buttonholes, for reinforcing openings, or for fastening articles, e.g. buttons, by sewing with mechanisms for needle-bar movement
    • D05B3/025—Sewing apparatus or machines with mechanism for lateral movement of the needle or the work or both for making ornamental pattern seams, for sewing buttonholes, for reinforcing openings, or for fastening articles, e.g. buttons, by sewing with mechanisms for needle-bar movement with a pair of needles mounted on the needle-bar
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B65/00—Devices for severing the needle or lower thread
    • D05B65/02—Devices for severing the needle or lower thread controlled by the sewing mechanisms
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B65/00—Devices for severing the needle or lower thread
    • D05B65/06—Devices for severing the needle or lower thread and for disposing of the severed thread end ; Catching or wiping devices for the severed thread
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B73/00—Casings
    • D05B73/04—Lower casings
    • D05B73/12—Slides; Needle plates

Abstract

A needle plate base (11) in a multi-thread chain stitch sewing machine with a seam ravel preventing apparatus is divided into a left needle plate base ( 11L) for attaching a needle plate ( P) thereto and supporting a swinging support shaft (30) of a thread hanging hook (3); and a right needle plate base (11R) for fixedly supporting a stopper member (4) and a thread handling air cylinder (32) and a stopper air cylinder (42). The right needle plate base(llR) is fastened to a sewing machine bed (B). The left needle plate base (11L) is fastenably and unfastenably fastened to an upper surface of the bed(B) via screw members (102). Adj ustment of stitch performation, and maintenance, e.g., replacement of various kinds of components stored inside the bed, can extremely easily and simply be carried out without having much trouble and requiring labor and time, and therefore, the stitch performation and predetermined ravel preventing function can be constantly surely reproduced.

Description

The burst at the seams two strands ring Sewing machines of device of the anti-stitching of band
Technical field
The present invention relates to a kind of with the burst at the seams two strands ring Sewing machines of device of anti-stitching, it mainly is the Sewing machines take the double-stranded ring of horizontal cartridge type Sewing machines as representative, form the stitching of double-stranded circumferential weld by suture and looper thread, be used for preventing partly occurring bursting at the seams in the sewing finishing of the stitching of above-mentioned double-stranded circumferential weld.
Background technology
The two strands ring Sewing machines of horizontal cartridge type etc. is Sewing machines as described below, and it comprises: one or more pin, and this keeps for suture and rises and descend; And looper, this looper looper thread is kept so that its towards with the roughly direction advance and retreat action of quadrature of path that moves up and down of above-mentioned pin, move to catch the suture loop that above-mentioned pin forms by the turnover that utilizes above-mentioned looper below needle plate, and the looper thread that utilizes this looper to keep winds the line mutually to above-mentioned suture, thereby forms the stitching of double-stranded circumferential weld at sewing fabric.
There are the following problems for the stitching of the general double-stranded circumferential weld that is formed by two strands ring Sewing machines: as shown in figure 20, the end of cut looper thread 10 is by in the situation about stretching along direction shown in the arrow among Figure 20 when sewing finishing, this looper thread 10 can be extracted from suture 20,20 formed final suture loop 20a, 20b, above-mentionedly extract easy court and make beginning side wave and movement, consequently, bursting at the seams can appear in stitching integral body.
This bursting at the seams equally also can occur in the stitching of the double-stranded circumferential weld that is formed by a suture or two above sutures and looper thread.
To prevent above-mentioned this peculiar the bursting at the seams as purpose of stitching that is formed by two strands ring Sewing machines, the applicant develops the two strands ring Sewing machines of the anti-device that bursts at the seams of band that the following describes, and submitted patent application (below, be referred to as the patent application technology that the applicant has submitted to) to.
Such as Figure 21～shown in Figure 23, the anti-stitching of the two strands ring Sewing machines (two-needle sewing machine being described at this) in the patent application technology that the applicant has submitted to the device that bursts at the seams comprises: pin 2,2, this pin 2, the 2 pairs of sutures 20,20 keep and are in the needle downing position A, the A that set across the interval on the left and right directions with respect to the substantial middle at needle plate P moving up and down (with reference to Figure 11～Figure 17); Looper 1,1 pair of looper thread 10 of this looper keep and can be along the actions of advancing and retreat of the side by side direction of needle downing position A, A, and suture loop 20a, the 20b(that seizure forms below needle plate P when advancing is with reference to Figure 11～Figure 17); Line operation cylinder (below comprise the parts that are called line operation cylinder) 32, this line operation cylinder is as wire-hanging hook 3 and hook actuator, wherein, above-mentioned wire-hanging hook 3 can carry out near and deviates from action with respect to looper 1, and as shown in figure 21 away from the hanging wire position of the position of readiness of looper 1 and close looper 1 as shown in figure 23 between centered by the fulcrum 30 of above-below direction with the face of needle plate P almost parallel in swing, above-mentioned hook actuator drives above-mentioned wire-hanging hook 3 and swings between above-mentioned position of readiness and hanging wire position; Swing arm 9 and gag lever post 4, this swing arm 9 and gag lever post 4 are configured in than wire-hanging hook 3 on the position of needle plate P, above-mentioned swing arm 9 centered by the fulcrum 90 of above-below direction with the face of needle plate P almost parallel in swing, remain on the holding position between hanging wire position and the position of readiness with suture loop 20a, the 20b that wire-hanging hook 3 is caught in the hanging wire position; Limiting cylinder (below comprise the parts that are called spacing cylinder) 42, this spacing cylinder 42 is as driving gag lever post 4 so that its clamped position that engages from the part with swing arm 9 is rocked to the spacing actuator away from the yielding position of this clamped position; Connecting rod 35, this connecting rod 35 is connected above-mentioned wire-hanging hook 3 in linkage with swing arm 9; And control part 8, this control part 8 is selected the action of the above-mentioned line operation cylinder 32 of control and spacing cylinder 42 after finishing common making, suture loop 20b with a side that wire-hanging hook 3 is caught in the hanging wire position remains on above-mentioned holding position, and above-mentioned state kept, make action (with reference to Fig. 8) with what carry out at least one pin.
In addition, in the anti-device that bursts at the seams of the two strands ring Sewing machines of the patent application technology that the applicant has submitted to, to with described later as the identical or corresponding member of formation of the member of formation in the anti-device that bursts at the seams of embodiment of the present invention explanation and constituting parts and the constituting parts mark symbol identical with the symbol that in embodiment of the present invention, uses, and omit their detailed description.
The patent application technology of having submitted to according to above-mentioned the applicant, after finishing common making by utilizing control part to wire-hanging hook 3, each action of gag lever post 4 and swing arm 9 is controlled, carry out the action of making of an above-mentioned pin, thereby as shown in figure 18, the stitching M that looper thread 10 is passed in double-stranded circumferential weld is formed on the final suture loop 20a on the right side (being the left side in Figure 18) on the sewing fabric back side at last, when carrying out be used to the making an of pin that prevents from bursting at the seams, looper thread 10 is turned back in the place ahead of the suture 20 of extracting from the sewing fabric back side, and the position in passing the final suture loop 20 in right side is cut off.On the other hand, suture 20 in the left side (being the right side among Figure 18) of carrying out extracting from the sewing fabric back side when making of a pin moved is formed in the final suture loop 20b at the sewing fabric back side when being passed in common making at last, and this final suture loop 20b carried out from coiling, to form the stitching of monocycle seam.By this, as shown in figure 18, looper thread 10 is under the suture 20 and the state between the final suture loop 20b in left side that is pressed against the left side.
In Figure 18, illustrate with the clearly final suture loop 20b in expression left side and the winding of suture 20 with lax state, but the final suture loop 20b in actual left side is strained by brute force after suture 20 passes as shown in figure 19, and is in the state identical with the final suture loop 20a on right side.Looper thread 10, and is limited with the state between the suture loop 20c in the final suture loop 20 that hangs over the left side and the left side of last formation by between the final suture loop 20b that is pressed in suture 20 and left side by securely.As shown in figure 19 because no matter looper thread 10 be subject to from which side to power all can keep above-mentioned restriction, therefore, can prevent reliably distinctive appearance of bursting at the seams on the stitching M of double-stranded circumferential weld.
As mentioned above, the anti-stitching of the band of the patent application technology submitted to of the applicant double-stranded circumferential weld of the device function of threading that bursts at the seams prevents distinctive generation of bursting at the seams on the stitching of double-stranded circumferential weld effectively.But, in the two strands ring Sewing machines of the anti-device that bursts at the seams of band of the applicant's the above-mentioned patent application technology of having submitted to, the improved technical problem of wanting below still leaving.
Namely, in the patent application technology that the applicant has submitted to, such as Figure 21～shown in Figure 23, be supported on the long and larger single needle plate platform 11 of left and right directions as consisting of burst at the seams wire-hanging hook 3, gag lever post 4, swing arm 9, line operation cylinder 32, the spacing cylinder 42 of inscape of device of anti-stitching, this needle plate platform 11 is equipped with needle plate P and is fixed on the upper surface of sewing machine base section.Specifically, the swing of standard trolley 3 is bearing near position rear side left part, needle plate P of needle plate platform 11 with fulcrum 30.On the other hand, adopted following structure: gag lever post 4, swing arm 9, line operation cylinder 32 and spacing cylinder 42 are bearing in the position away from needle plate P of the right side part of needle plate platform 11, and at the leading section of swing arm 9 and extend in the mode of turning back towards the place ahead with fulcrum 30 from the swing of wire-hanging hook 3 between the leading section of the 3c of the section that extends of setting and be connected with connecting rod 35.In addition, the symbol among Figure 21～Figure 23 6 is by hold-down screw 60,60 and the looper thread holder that is fixed together of wire-hanging hook 3.
As mentioned above, in the two strands ring Sewing machines of the patent application technology that the applicant has submitted to, burst at the seams all inscapes of device of anti-stitching are supported on the single needle plate platform 11 long and larger on the left and right directions.Therefore, be installed on the upper surface of sewing machine base section at the needle plate platform 11 of each member of formation that mounting support is had the anti-device that bursts at the seams after, for example, needs by to such as the driving of looper and this looper with member etc., be positioned at needle plate platform 11 bottoms and be housed in the position of the member that the formation of sewing machine base section inside makes and situation that movement locus correction is regulated sewing performance under, or need to change the above-mentioned various parts that are assembled in sewing machine base section inside etc. in the situation about safeguarding, only take off needle plate P and be and can't guarantee to regulate and safeguard needed enough large working spaces.Therefore, in order to ensure larger working space, be forced to carry out temporarily will be not only long but also adjusting and maintenance that large needle plate platform 11 integral body take off to stipulate from sewing machine base section, regulate and safeguard finish after again not only long but also large needle plate platform 11 integral installations need like this operation of strength to sewing machine base section.
Particularly, be connected with on on-line operation cylinder 32 and the spacing cylinder 42 for working gas being supplied to said cylinder 32,42 snorkel 33,34, when taking off and installing needle plate platform 11, need to carry out pulling out to avoid it to affect operation from the inside of sewing machine base section above-mentioned snorkel 33,43, after operation, it is pressed into inner so very trouble and the operation consuming time of sewing machine base section again.In addition, if do not carry out above-mentioned trouble and adjusting and upkeep operation consuming time, then may cause sewing performance to reduce, can't reproduce the anti-function that bursts at the seams of regulation.Therefore, in any case all must carry out the aforesaid operation that bothers very much and take time and effort, also leaving in this needs improved technical problem.
The prior art document
Patent documentation
Patent documentation 1: Japan Patent Patent 2011-016821
Patent documentation 2: Japan Patent Patent 2011-115174
Summary of the invention
The present invention In view of the foregoing does, it is a kind of with the burst at the seams two strands ring Sewing machines of device of anti-stitching that its purpose is to provide, it can prevent effectively for the distinctive generation of bursting at the seams of the stitching of double-stranded circumferential weld, the strength of also need not be pretty troublesome, costing a lot of money and time just can be very easy to and carry out simply because of the adjusting of revising the sewing performance that the position that consists of the member of making etc. brings and the maintenances such as replacing that the various parts that are housed in sewing machine base section inside are carried out, and can reproduce reliably all the time the anti-function that bursts at the seams of sewing performance and regulation.
For achieving the above object, the burst at the seams two strands ring Sewing machines of device of the anti-stitching of band of the present invention comprises: pin should keep and moved up and down for suture; Looper, this looper looper thread is kept and can along with the roughly direction advance and retreat action of quadrature of path that moves up and down of above-mentioned pin, when forward motion, can catch the suture loop that above-mentioned pin forms under needle plate; And needle plate platform, this needle plate platform is equipped with above-mentioned needle plate and is installed on the upper surface of sewing machine base section, by utilizing above-mentioned looper to catch the suture loop that above-mentioned pin forms under above-mentioned needle plate, with the looper thread that utilizes this looper to be kept above-mentioned suture is wound the line mutually, thereby form the stitching of double-stranded circumferential weld at sewing fabric, also comprise: the suture maintaining body, this suture maintaining body has wire-hanging hook and hook actuator, wherein, above-mentioned wire-hanging hook can carry out near and deviates from action with respect to above-mentioned looper, and away from the position of readiness of above-mentioned looper and near between the hanging wire position of above-mentioned looper centered by the fulcrum of above-below direction with the face of needle plate almost parallel in swing, above-mentioned hook actuator drives above-mentioned wire-hanging hook and swings between above-mentioned position of readiness and hanging wire position; Position-limit mechanism, this position-limit mechanism has limit component and spacing actuator, wherein, above-mentioned limit component is configured in wire-hanging hook than above-mentioned suture maintaining body on the position of above-mentioned needle plate, and can make the swing of wire-hanging hook from the hanging wire position to position of readiness temporarily stop and removing stopping, remain on holding position between above-mentioned hanging wire position and the position of readiness with the suture loop that above-mentioned wire-hanging hook is caught in above-mentioned hanging wire position, above-mentioned spacing actuator carries out the above-mentioned of this limit component and stops and removing stopping; Connecting elements, this connecting elements is connected the wire-hanging hook of above-mentioned suture maintaining body in linkage with the limit component of above-mentioned position-limit mechanism; And control part, this control part is controlled above-mentioned suture maintaining body and position-limit mechanism, make moving up and down of itself and above-mentioned pin, the advance and retreat action of looper and the feeding action of sewing fabric are associated, thereby finishing to make above-mentioned looper carry out forward motion after common the making, and the wire-hanging hook of above-mentioned suture maintaining body is carried out near action with respect to this looper, so that the above-mentioned suture loop of catching in above-mentioned hanging wire position moves to above-mentioned holding position, and keep above-mentioned state, carry out the action of making of at least one pin, the burst at the seams feature of two strands ring Sewing machines of device of the anti-stitching of above-mentioned band is, above-mentioned needle plate platform is divided into two into left side needle plate platform section and right side needle plate platform section, wherein, above-mentioned left side needle plate platform section is equipped with above-mentioned needle plate and the swing fulcrum of above-mentioned wire-hanging hook is supported, above-mentioned right side needle plate platform section is to above-mentioned limit component, above-mentioned hook actuator and spacing actuator are fixed supporting, above-mentioned sewing machine base section is fixed in above-mentioned right side needle plate platform section, and left side needle plate platform section is installed on the upper surface of above-mentioned sewing machine base section can be tightened and remove fixing mode by screw member.
According to the burst at the seams two strands ring Sewing machines of device of the anti-stitching of the band of the present invention with feature structure as mentioned above, by after finishing common making, make looper carry out forward motion, and the wire-hanging hook of suture maintaining body is carried out near action with respect to looper, so that the suture loop that this looper is caught moves to above-mentioned holding position, and keep above-mentioned state, carry out the action of making of at least one pin, thereby the suture that the pin that can utilize decline keeps carries out from coiling previous suture loop, and press looper thread from winding portion and prevent that this looper thread is pulled out above-mentioned, by this, just can prevent reliably that at stage of development stitching from bursting at the seams.
In addition, in the present invention, the needle plate platform that is installed on sewing machine base section is divided into two into left side needle plate platform section and right side needle plate platform section, wherein, above-mentioned left side needle plate platform section is equipped with needle plate and the wire-hanging hook of suture maintaining body is supported to and can swings, above-mentioned right side needle plate platform section is to the limit component of position-limit mechanism, hook actuator and spacing actuator are fixed supporting, because the needle plate platform section of the above-mentioned left and right sides that is divided into two is installed on respectively sewing machine base section, device is assembled to sewing machine base section will prevent bursting at the seams, therefore, with the patent application technology of having submitted to such as the applicant, process one not only the situation of long but also large needle plate platform compare, can be with the operation of device integral installation (assembling) to sewing machine base section of preventing like a cork bursting at the seams of less strength.
And, after temporarily being assembled in sewing machine base section, at needs by to driving with member such as looper and looper etc., be positioned at needle plate platform bottom and be housed in the position of the member that the formation of sewing machine base section inside makes and situation that movement locus correction is regulated sewing performance under, or need to the various parts that be positioned at needle plate platform bottom and be housed in sewing machine base section inside keeped in repair, change and wait in the situation about safeguarding, do not need the right side needle plate platform section that the hook actuator that is connected with snorkel or electric power supply line and spacing actuator are fixed supporting is taken off from sewing machine base section, take off as long as left side needle plate platform section is removed with the fixing of sewing machine base section and with it, just can guarantee enough large working space.
Therefore, as long as process left side needle plate platform section small and light and that do not have snorkel and electric power supply line to twine, the strength that need not bother, costs a lot of money and time, with regard to can be very easy to, simple and good operability ground carry out to sewing performance adjusting, to maintenances such as the maintenance of the various parts that are housed in sewing machine base section inside and replacings.By this, can play the effect that to have given play to high repeatability all the time the anti-function that bursts at the seams of good sewing performance and regulation, and can successfully eliminate residual technical problem in the patent application technology that the applicant has submitted to.
In the anti-stitching of band of the present invention bursts at the seams the two strands ring Sewing machines of device, comparatively it is desirable to, above-mentioned position-limit mechanism is by limit component, swing arm, spring and above-mentioned spacing actuator consist of, wherein, above-mentioned limit component directly is connected with above-mentioned hook actuator and moves along linear reciprocation, above-mentioned swing arm can engage and engagement release with the part of above-mentioned limit component, above-mentioned spring is to the above-mentioned swing arm application of force, it is swung towards the direction that above-mentioned wire-hanging hook is positioned at above-mentioned position of readiness, and above-mentioned spacing actuator overcomes the active force of above-mentioned spring and above-mentioned swing arm is removed and the engaging of the part of limit component.
At this moment, owing to can utilize the active force of spring to carry out limit component towards the action (being in the action of the direction of position of readiness towards wire-hanging hook) of Return-ing direction, therefore, engage with the part of limit component and the actuator of the swing arm action of engagement release as making, get final product so long as can extrude the actuator of driving limit component.Therefore, using in the situation of cylinder as spacing actuator, owing to can use single-lift cylinder, therefore, can realize miniaturization, the cost degradation of spacing actuator.
In addition, in the two strands ring Sewing machines of the device that bursts at the seams with stitching of the present invention, comparatively it is desirable to, the swing arm of above-mentioned position-limit mechanism is installed in the mode that can regulate position, the left and right sides and is installed on the movable table of above-mentioned right side needle plate platform section.
At this moment, because movable table can be with respect to right side needle plate platform section in left and right directions adjusted position, therefore can be simply and suitably to regulating the opportunity of extracting the suture loop of looper on remaining on wire-hanging hook, thus can carry out reliably be used to the certainly coiling that prevents that stitching from bursting at the seams.
In addition, in the anti-stitching of band of the present invention bursts at the seams the two strands ring Sewing machines of device, comparatively it is desirable to, the hook actuator of above-mentioned suture maintaining body and the spacing actuator of above-mentioned position-limit mechanism are fixedly attached to the lower surface of above-mentioned right side needle plate platform section with the overlapping state of two-stage up and down.
In this case, because two actuators are fixedly supported upon right side needle plate platform section with the overlapping state of two-stage up and down, therefore, with the patent application technology of having submitted to such as the applicant two actuators being configured in situation about (being arranged side by side) on the position separated from one another compares, can dwindle the occupied plane space of actuator with the realization densification, and it is inner to be housed in sewing machine base section with good form.
In addition, in the anti-stitching of band of the present invention bursts at the seams the two strands ring Sewing machines of device, comparatively it is desirable to, wire-hanging hook at above-mentioned suture maintaining body is equipped with the looper thread holder, this looper thread holder with above-mentioned wire-hanging hook between above-mentioned hanging wire position, holding position and the standby centered by above-mentioned fulcrum with the face of needle plate almost parallel in swing, thereby will remain on from the looper thread that above-mentioned looper extends to sewing fabric the front side of the down position of above-mentioned pin.
At this moment, owing to utilize the looper thread holder of moving with wire-hanging hook that looper thread is remained on the position of the down position front side of pin, so can when realizing simple structure, reliably looper thread and suture be positioned.Therefore, can carry out reliably from coiling, thereby can prevent more reliably that stitching from bursting at the seams.
In addition, in the anti-stitching of band of the present invention bursts at the seams the two strands ring Sewing machines of device, comparatively it is desirable to, above-mentioned looper thread holder is installed on above-mentioned wire-hanging hook in mode that can adjusting position.
In this case, can suitably set the relative position of suture and looper thread, thereby can implement more reliably further to improve the effect that prevents that stitching from bursting at the seams from coiling.
In addition, in the anti-stitching of band of the present invention bursts at the seams the two strands ring Sewing machines of device, comparatively it is desirable to, the hook actuator of above-mentioned suture maintaining body and the spacing actuator of above-mentioned position-limit mechanism all are cylinders.
In this case, can make based on the control signal from control part the swing arm high responsiveness ground action of the wire-hanging hook of suture maintaining body and position-limit mechanism, thus can be reliably and effectively bring into play the effect that the anti-stitching after common the making bursts at the seams.
In addition, as above-mentioned actuator, also can use o etc.
In addition, in the anti-stitching of band of the present invention bursts at the seams the two strands ring Sewing machines of device, comparatively it is desirable to, on the link of the above-mentioned connecting elements part towards above be extruded with pin, and the link of wire-hanging hook partly be formed with can be enclosed within above the above-mentioned pin on this pin and can towards above the connecting hole extracted.
In this case, for sewing performance is regulated, to the various parts that are housed in sewing machine base section inside keep in repair, the maintenance such as replacing, and remove the fixing of left side needle plate platform section and sewing machine base section from upper surface, and when its top towards sewing machine base section taken off, do not need to unscrew being connected with screw or will connecting the operation of extracting such trouble with pin between connecting elements and the wire-hanging hook, as long as mention left side needle plate platform section towards the top, just can remove being connected of wire-hanging hook and connecting elements.In addition, after carrying out above-mentioned adjusting and safeguarding, as long as left side needle plate platform section is fixedly installed in sewing machine base section from the top, just can make wire-hanging hook and connecting elements return connection status.By this, can further simplify above-mentioned adjusting and the step when safeguarding.
In addition, in the anti-stitching of band of the present invention bursts at the seams the two strands ring Sewing machines of device, comparatively it is desirable to, above-mentioned left side needle plate platform section or sewing machine base section, away from a plurality of a plurality of positions that are fixedly connected with and remove connecting portion of being undertaken by above-mentioned screw member on, be extruded with and can make left side needle plate platform section with respect to the latch of sewing machine base section location, sewing machine base section or above-mentioned left side needle plate platform section be formed with can be chimeric with above-mentioned latch pin-and-hole.
In this case, when left side needle plate platform section was installed and removed with respect to sewing machine base section, chimeric by a plurality of latch and pin-and-hole just can be positioned at left side needle plate platform section on the assigned position of sewing machine base section reliably.Therefore, even if carry out above-mentioned adjusting and all left side needle plate platform section is installed and removed repeatedly with respect to sewing machine base section when safeguarding at every turn, can guarantee all the time that also position and the posture stipulated are installed in left side needle plate platform section in the sewing machine base section.By this, can not only usually make, can also be all the time suitable and realize preventing reliably the function that stitching bursts at the seams.
In addition, the anti-stitching of the present invention device that bursts at the seams can be applied to situation take the double-stranded ring of horizontal cartridge type Sewing machines as object ideally.
Description of drawings
Fig. 1 is the burst at the seams double-stranded ring of the horizontal cartridge type Sewing machines of device of the anti-stitching of the band of embodiment of the present invention.
Fig. 2 is the burst at the seams stereogram of structure of major part of device of the anti-stitching in the double-stranded ring of the above-mentioned horizontal cartridge type of the expression Sewing machines.
Fig. 3 is expression with the burst at the seams stereogram of the part of structure of major part of the device state after taking apart of above-mentioned anti-stitching.
Fig. 4 is the burst at the seams top view of structure of major part of device of the above-mentioned anti-stitching of expression.
Fig. 5 is to above-mentioned anti-stitching the burst at the seams structure of position-limit mechanism of device and the upward view of the first major part of describing of action.
Fig. 6 is the upward view to the structure of above-mentioned position-limit mechanism and the second major part of describing of action.
Fig. 7 is the upward view to the structure of above-mentioned position-limit mechanism and the 3rd major part that describe of action.
Fig. 8 is the upward view to the structure of above-mentioned position-limit mechanism and the 4th major part that describe of action.
Fig. 9 is that expression comprises the burst at the seams block diagram of structure of control system of the double-stranded ring of horizontal cartridge type Sewing machines of device of above-mentioned anti-stitching.
Figure 10 is to the above-mentioned anti-stitching sequential chart that the movement content of control part of device describes that bursts at the seams.
Figure 11 is the burst at the seams key diagram of the first anti-action of bursting at the seams that device carries out of above-mentioned anti-stitching.
Figure 12 is the burst at the seams key diagram of the second anti-action of bursting at the seams that device carries out of above-mentioned anti-stitching.
Figure 13 is the burst at the seams key diagram of the 3rd anti-action of bursting at the seams that device carries out of above-mentioned anti-stitching.
Figure 14 is the burst at the seams key diagram of the 4th anti-action of bursting at the seams that device carries out of above-mentioned anti-stitching.
Figure 15 is the burst at the seams key diagram of the 5th anti-action of bursting at the seams that device carries out of above-mentioned anti-stitching.
Figure 16 is the burst at the seams key diagram of the 6th anti-action of bursting at the seams that device carries out of above-mentioned anti-stitching.
Figure 17 is the burst at the seams key diagram of the 7th anti-action of bursting at the seams that device carries out of above-mentioned anti-stitching.
Figure 18 is the figure that observes the stitch structure of the double-stranded ring of the resulting crosspointer of the present invention from the back side of sewing fabric.
Figure 19 is the key diagram of the anti-effect that bursts at the seams of stitch structure shown in Figure 180.
Figure 20 is the figure that observes the general stitch structure of sewing finishing part from the back side of sewing fabric.
Figure 21 be schematically illustrate the applicant submit the burst at the seams top view of structure of major part of device of anti-stitching in the patent application technology to.
Figure 22 be schematically illustrate above-mentioned the applicant submit the burst at the seams upward view of structure of major part of device of anti-stitching in the patent application technology to.
Figure 23 is submit to anti-stitching in the patent application technology to burst at the seams the top view that the operating state of major part of device describes to above-mentioned the applicant.
(symbol description)
1 looper
2 pins
3 wire-hanging hooks
4 limit components
6 looper thread holders
8 control parts
9 swing arms
10 looper threads
11 needle plate platforms
11L left side needle plate platform section
11R cylinder erecting bed section (right side needle plate platform section)
20 needlework
20a, 20b suture loop
The fulcrum of 30 above-below directions
32 lines operation cylinder (hook actuator)
35 connecting rods (connecting elements)
42 spacing cylinders (spacing actuator)
91 springs
92 swing arm erecting beds (movable table)
102 spring members
103 latch
104 pin-and-holes
110 pins
111 connecting holes
The A needle downing position
B sewing machine base section
The P needle plate
The stitching of the double-stranded circumferential weld of M
The specific embodiment
Below, based on accompanying drawing embodiments of the present invention are described.
Fig. 1 is the overall appearance stereogram of the double-stranded ring of the horizontal cartridge type Sewing machines of embodiment of the present invention, Fig. 2 and Fig. 3 are the burst at the seams stereograms of structure of major part of device of anti-stitching that the double-stranded ring of expression horizontal cartridge type of the present invention Sewing machines is installed, and Fig. 4 is the burst at the seams top view of structure of major part of device of the above-mentioned anti-stitching of expression.In addition, in the following description, the statement of using " left and right " shown in the arrow to reach " forward and backward " in Fig. 2～Fig. 4 describes.At this, " front " is near making operator's one side, and " afterwards " is away from making operator's one side, and " left and right " is " left and right " near the front side observation of making the operator time.
In addition, in the present embodiment, for the identical or corresponding member of formation of submission patent application technology and constituting parts based on the applicant of Figure 21～Figure 23 explanation, use identical symbol to be illustrated.
As shown in Figure 1, the sewing machine arm C of the double-stranded ring of the horizontal cartridge type of embodiment of the present invention Sewing machines and the B of sewing machine base section each other almost parallel ground from the upper-lower position of the D of sewing machine main body section towards left side extension setting.As shown in Figure 4, the double-stranded ring of above-mentioned horizontal cartridge type Sewing machines comprises: looper 1; Two pins 2,2(are with reference to Figure 11～Figure 17); Be installed on the needle plate platform 11 of the upper surface of the B of sewing machine base section; Be installed in anti-stitching on this needle plate platform 11 device H that bursts at the seams; And be installed in needle plate P on the above-mentioned needle plate platform 11. Pin 2,2 rises and descends by the action of needle bar drive device.A among Fig. 2, Fig. 4, A represent pin 2,2 needle downing position (down position).Needle downing position A, A are set in the substantial middle place of needle plate P across the interval on left and right directions.
Looper 1 by the action of looper drive at pin 2,2(needle downing position A, A) side by side direction advance and retreat (left side is advanced and move back on the right side) action.Solid line among Fig. 4 represents that looper 1 puts the state of action towards left carry, and the dotted line among Fig. 4 represents that looper 1 is given up the throne towards the right side and puts the state of action.Shown in the solid line of Fig. 4, the leading section that is in the looper 1 that left carry puts is crossed needle downing position A, A and is extended towards the left side, shown in the dotted line of Fig. 4, is in the give up the throne leading section of the looper 1 put of the right side and is positioned on the position of leaving towards needle downing position A, A right side.
The double-stranded ring of horizontal cartridge type Sewing machines advances by the left side of pin 2,2 rising and down maneuver and looper 1 and right deactuate is done and the sewing fabric (not shown) that is arranged on the needle plate P is made.Sewing fabric is pressed part (not shown) by being pressed on the needle plate P, the action of the feed mechanism by being located at sewing pedestal part B inside and being moved by the arrow Y-direction feeding towards Fig. 4.Feed mechanism comprises the feeding tooth, and this feeding tooth carries out returning mobile action under and towards the rear movement and the needle plate P that submerges outstanding at needle plate P and towards the place ahead repeatedly, by above-mentioned feeding tooth sewing fabric is moved towards the feeding of arrow Y-direction off and on.
Above-mentioned needle bar drive device, looper drive and feed mechanism are by the well known organization of action from the transmission of machine spindle (not shown) and synchronously with one another.Pin 2,2 respectively to suture 20,20(with reference to Figure 11～Figure 17) keep, when sewing fabric stopped feeding and moves, pin 2,2 ran through this sewing fabric and arrives below the needle plate P, extracts towards the top of sewing fabric after then pin 2,2 rises.1 couple of looper thread 10(of looper is with reference to Figure 11～Figure 17) keep, and a left side is advanced when pin 2,2 begins to rise, to catch the suture 20 that is formed on needle plate P below, 20 wire loop 20a, 20a.Sewing fabric is moved by feeding when pin 2,2 rises.Sewing fabric after pin 2,2 runs through feeding and moves also descends, the looper thread 10 that is kept to catch the looper 1 of the right side in moving back.Double-stranded ring Sewing machines repeatedly carries out above action and forms the double-stranded stitching that encircles at sewing fabric.
The included anti-stitching of the above-mentioned this horizontal cartridge type double-stranded ring Sewing machines device H that bursts at the seams comprises: the suture maintaining body; Position-limit mechanism; Connecting rod 35, this connecting rod 35 is as the wire-hanging hook 3(of above-mentioned suture maintaining body is narrated hereinafter) narrate hereinafter with the limit component 4(of above-mentioned position-limit mechanism) connecting elements that is connected in linkage; And control part 8(narrates hereinafter).
Above-mentioned suture maintaining body has the line operation cylinder 32 of wire-hanging hook 3 and reciprocating motion type, this reciprocating motion type line operation cylinder 32 as drive above-mentioned wire-hanging hook 3 make its away from the position of readiness of above-mentioned looper 1 with near between the hanging wire position of above-mentioned looper 1 centered by the fulcrum 30 of above-below direction the hook actuator of swing.Be configured in as the fulcrum 30 of the oscillation center of wire-hanging hook 3 needle plate P the right lateral side bight near, and be supported on the above-mentioned needle plate platform 11.
Wire-hanging hook 3 has circular-arc curved shape, and its leading section at the supporting arm 3e that extends from fulcrum 30 towards the left side arranges continuously in the mode of turning back towards the place ahead.The leading section of wire-hanging hook 3 bends towards needle downing position A, A at the downside of needle plate P from the rear, left side.Leading section at wire-hanging hook 3 is formed with side-prominent hook portion 3b outwardly.Supporting arm 3e has the 3c of the section that extends that extends towards the place ahead from fulcrum 30, is connected with an end of connecting rod 35 at this leading section that extends the 3c of section.
As shown in Figure 4, on the base portion of above-mentioned wire-hanging hook 3, being tightened together by two hold-down screws 60,60 has the looper thread holder 6 that bends to circular-arc shape.The leading section of looper thread holder 6 roughly extends towards the place ahead along the left side of wire-hanging hook 3, and bends towards needle downing position A, A at the anterior position place of wire-hanging hook 30 leading sections.Be formed with at the leading section of looper thread holder 6 and be branched off into two forked looper thread incorporating section 6a.Looper holder 6 constitutes by unscrewing hold- down screw 60,60 can regulate it with respect to the position of wire-hanging hook 3, and utilizes above-mentioned position adjustments to carry out reliably the looper thread incorporating section 6a of front end to the maintenance of looper thread 10.
Such as Fig. 5～shown in Figure 8, above-mentioned position-limit mechanism is by limit component 4, swing arm 9, the spacing cylinder 42 of spring 91 and single-lift (towards the extrusion drive-type of left) consists of, wherein, above-mentioned limit component 4 is fixed on the leading section (left part) of the take-off lever 31 of above-mentioned line operation cylinder 32 by limit screw 36, utilization is supplied with the working gas that comes via snorkel 33 and is made line operation cylinder 32 expanding-contracting actions, thereby driving this limit component 4 moves back and forth on left and right directions point-blank, above-mentioned swing arm 9 can engage with the part of this limit component 4 and engagement release, 91 pairs of these swing arm 9 application of forces of above-mentioned spring engage its part with above-mentioned limit component 4, and towards making above-mentioned wire-hanging hook 3 be positioned at the direction swing of position of readiness, above-mentioned single-lift spacing cylinder 42 forces to make the spacing actuator of a part of engagement release of above-mentioned swing arm 9 and above-mentioned limit component 4 as overcoming the swing active force of this spring 91.
The take-off lever 41 of above-mentioned spacing cylinder 42 constitutes, and supplies with the working gas that comes and drives spacing cylinder 42 and press towards the left side along with utilizing via snorkel 43, makes above-mentioned swing arm 9 overcome the swing active force of above-mentioned spring 91 and towards counterclockwise swinging.
Swing arm 9 can swingingly be bearing in the upper surface of swing arm erecting bed (movable table) 92 centered by the fulcrum 90 of above-below direction.Swing arm 9 has the engaging pawl 9a that can engage with the part of above-mentioned limit component 4 at leading section.As shown in Figure 5, when moving to drive above-mentioned limit component 4 by the elongation of line operation cylinder 32 and move towards the left side, namely when wire-hanging hook 3 moves to position of readiness, swing arm 9 contacts with the sidepiece of limit component 4 under the effect of the active force of spring 91, when the contractive action by line operation cylinder 32 drives above-mentioned limit component 4 and moves towards the right side, as shown in Figure 6, swing arm 9 makes the engaging pawl 9a of its front end be in the state that can engage with the part of limit component 4 swinging clockwise centered by fulcrum 90 under the effect of the active force of spring 91.
In addition, as shown in Figure 7, again extend a little by the line operation cylinder 32 that makes contraction, the engaging pawl 9a of swing arm 9 front ends will engage with the part of limit component 4, stops and limit component 4 is moved temporarily towards the driving in left side.Under the state that limit component 4 temporarily stops as mentioned above, above-mentioned wire-hanging hook 3 is located via the holding position that connecting rod 35 moves and stops between above-mentioned position of readiness and the hanging wire position.At this moment, move the left back of the needle downing position A of the hook portion 3b of wire-hanging hook 3 front ends from hanging wire position shown in Figure 4 (about needle downing position A, A between) towards the left side, remains on the above-mentioned holding position after hooking the suture 20 in left side.In addition, looper thread holder 6 advances to the front side of looper 1 and the looper thread incorporating section 6a of front end is kept looper thread 10 in the place ahead of the needle downing position A in left side.
In addition, as shown in Figure 8, driver output bar 41 is pressed towards the left side along with 42 elongations of spacing cylinder, makes above-mentioned swing arm 9 overcome the swing active force of above-mentioned spring 91 and towards counterclockwise swinging.Along with above-mentioned swing, the engaging pawl 9a that removes these swing arm 9 front ends engages with the part of limit component 4, thereby removes temporarily stopping of limit component 4.By this, line operation cylinder 32 extends to greatest extent action and makes wire-hanging hook 3 and looper thread holder 6 be back to position of readiness via connecting rod 35 swings.
As mentioned above, in the present embodiment, the expanding-contracting action by line operation cylinder 32 and spacing cylinder 42 swings the wire-hanging hook 3 of suture maintaining body and looper thread holder 6 between above-mentioned position of readiness, hanging wire position and holding position.
In addition, the double-stranded ring of the horizontal cartridge type of present embodiment Sewing machines is included in after the sewing finishing tangent mechanism 5 that suture 20 and looper thread 10 are cut off.Such as Figure 16 and shown in Figure 17, above-mentioned tangent mechanism 5 has tangent line hook 50, tangential knife 51, tangent line hook 50 is pressed into the leaf spring 59 of the sliding contacting part that contacts with tangential knife 51 and tangent line actuator 58(with reference to Fig. 9).Tangent line hook 50 comprises outstanding the first hook portion 52 and the second hook portion 53 that arranges towards the rear at its leading section.Because tangent mechanism 5 is known, therefore, omits explanation and the diagram of other detailed construction.
Fig. 9 is above-mentioned the burst at the seams block diagram of structure of control system of the double-stranded ring of horizontal cartridge type Sewing machines of device H of anti-stitching that comprises of expression.
The control part 8 of two strands ring Sewing machines is inputted respectively stepping on signal 21a and step near needle position signal 22, the tangent line signal 23 that sends when letter in reply 21b, pin 2,2 are in the top dead-centre and dial suture signal 24 from pedal switch 21.
On the other hand, operate cylinder 32, spacing cylinder 42 and tangent line actuator 58 output action control signals towards line respectively from control part 8.Wire-hanging hook 3 and looper thread holder 6 be as described above action according to the action control signal that exports operation cylinder 32 and spacing cylinder 42 from control part 8 to, and the tangent line actuator 58 of tangent mechanism (not shown) carries out expanding-contracting action according to the tangent line signal 23 of exporting from control part 8.
In addition, from control part 8 also respectively to as the motor of sewing machine 80 of the drive source of machine spindle, make presser feet with the presser feet cylinder 81 of pressing piece lifting, make air pipeline purging device 82 that cut suture 20,20 takeoffs, the minimizing feed mechanism 83 that the feeding amount of sewing fabric is regulated and the looper thread that looper thread 10 is suppressed towards sending of looper 1 suppress mechanism's 84 output action control signals as described later.
Reduce the action form of feed mechanism 83 by changing the feeding tooth in the feed mechanism, for example make the path of motion of feeding tooth tilt to shorten the outstanding outstanding time at needle plate P with respect to needle plate P, shorten the feeding tooth and act on time on the sewing fabric on the needle plate P, or make the length of the bar of feeding tooth do action by change, reduce the unit feeding spacing of feeding tooth etc., to reduce the feeding amount of sewing fabric.Because above-mentioned minimizing feed mechanism 83 is known, therefore, omits detailed diagram and explanation.
Looper thread suppresses mechanism 84 and comprises: cable-clamping disc, this cable-clamping disc divide the middle part of the looper thread 10 of sending into looper 1 and carry out clamping; And actuator, this actuator so that this cable-clamping disc the mode of the intensity of looper thread clamping increase and decrease is moved.Above-mentioned looper thread suppresses mechanism 84 just can increase the resistance that looper thread 10 is applied by improving cable-clamping disc to the intensity of looper thread clamping, thereby can suppress sending of looper thread 10, because it is known that this looper thread suppresses mechanism 84, therefore, omits its detailed diagram and explanation.
After finishing the making of the stitching that forms double-stranded circumferential weld, control part 8 makes wire-hanging hook 3 and looper thread holder 6 and motor of sewing machine 80, presser feet cylinder 81, air pipeline purging device 82, reduce feed mechanism 84 and looper thread suppresses mechanism 84 and moves relatedly, just can realize preventing the action that the stitching of double-stranded circumferential weld bursts at the seams.
Figure 10 is the sequential chart that represents in chronological order be used to the movement content of the control part 8 that prevents from bursting at the seams.Control part 8 is the computers that comprise CPU, ROM and RAM, is to carry out by a series of actions of the CPU that carries out according to the control program that is stored among the ROM according to the action of bursting at the seams that prevents of the sequential chart of Figure 10.
Figure 11～Figure 17 is the key diagram of the anti-action of bursting at the seams carried out of the anti-device H that bursts at the seams by the double-stranded ring of horizontal cartridge type of the present invention Sewing machines, the operating state of wire-hanging hook 3, looper thread holder 6 and tangent line hook that the action of the control part 8 that its expression is undertaken by the sequential chart according to Figure 10 produces.
Use making the operator and when finishing common making, can stopping to step on operation for the pedal that drives Sewing machines of Sewing machines, then carry out the anti-action of bursting at the seams, but at this moment, above-mentioned pedal is stepped on back operation.Pedal switch 21 is arranged on the pedal, and signal 21a is stepped in output when stepping on operation, and letter in reply 21b is stepped in output when stepping on back operation.
When finishing common making, when the S1 of Figure 10, inscribe from stepping on when being back to neutral condition for the state that drives Sewing machines, namely at pedal switch 21 when output is not stepped on signal 21a and stepped on any one the state of writing in reply in numbers 21, control part 8 is with reference to from the needle position signal 22 of input side input and to motor of sewing machine 80 output halt instructions.By this, Sewing machines temporarily stops near pin 2,2 is positioned at top dead-centre, under the state that advances of looper 1 left side.
Then, control part 8 standbies are until carried out stepping on back operation to above-mentioned pedal.When the S2 of Figure 10, inscribe and step on back operation, thereby when letter in reply 21b is stepped in the input side input, the control part 8 beginnings anti-action of bursting at the seams as described below.In addition, control part 8 returns the common action of making again inputting from pedal switch 21 when stepping on signal 21a, therefore, makes the operator by again pedal being stepped on operation, just can continue common making.
In addition, in Figure 10, at S1 constantly and the S2 state of maintaining a neutral stance constantly, but be not to keep above-mentioned neutral condition, the pedal operation when finishing common making also can move to the state stepped on back from stepping on state continuously.At this moment, in moving process, during through the neutral position, be in and step on signal 21a and step on the no signal condition that letter in reply 21b is not output.Control part 8 with above-mentioned no signal condition as triggering signal, thereby pin 2,2 is risen near the top dead-centre, after realizing the state that looper 1 left side is advanced, begin the anti-action of bursting at the seams.
In addition, in the sequential chart of Figure 10, stepping on back of the pedal of inscribing during S2 operates in continuation in the anti-action of bursting at the seams of carrying out following explanation, but before the anti-release of bursting at the seams, do not need to proceed this operation of stepping on back, stopping after input steps on letters in reply 21b, the anti-action of bursting at the seams also can continue execution under the action of control part 8.
Figure 11 represents the anti-pin 2 during the action beginning of bursting at the seams, 2 and the state of looper 1. Pin 2,2 is in the state of extracting above the sewing fabric behind the stitching M that is formed double-stranded circumferential weld by two sutures 20,20 and looper threads 10.Looper 1 advances on the downside left side of sewing fabric, and is in the state of catching pin 2,2 two suture loop 20a, 20b that form.If at this state incision breaking joint line 20,20 and looper thread 10, then can form sewing finishing section shown in Figure 20.
After beginning the anti-action of bursting at the seams, control part 8 at first sends action command to the line operation cylinder 32 of outlet side.By this, line operation cylinder 32 is from elongation state shown in Figure 5 towards contraction state action shown in Figure 6, move towards the right side to drive limit component 4, thereupon, wire-hanging hook 3 and looper thread holder 6 swing centered by fulcrum 30 via limit component 4 and connecting rod 35, to move to the hanging wire position from position of readiness.At this moment, the hook portion 3b of wire-hanging hook 3 front ends hooks the suture loop 20a in a side (left side), swing arm 9 in the position-limit mechanism is swinging centered by fulcrum 90 under the effect of the active force of spring 91 toward the clockwise direction, and the engaging pawl 9a of its front end is in the state that can engage with the part of limit component 4.
Subsequently, control part 8 sends action command to line operation cylinder 32 at once.The line operation cylinder 32 that receives action command is stretched to state shown in Figure 7 slightly from state shown in Figure 6, thereby drives limit component 4 towards the left side traveling priority.When above-mentioned line operation cylinder 32 a little elongation, the engaging pawl 9a of swing arm 9 front ends engages with the part of limit component 4.By this, limit component 4 moves towards the driving in left side and is temporarily stopped.Like this, move under the state that is temporarily stopped towards the driving in left side at limit component 4, as shown in figure 12, above-mentioned wire-hanging hook 3 is mobile and stop on the holding position between above-mentioned position of readiness and the hanging wire position via connecting rod 35, the suture loop 20a in left side is remained on place, above-mentioned holding position, and looper thread holder 6 advances to the front side of looper 1 and the looper thread incorporating section 6a of front end is kept looper thread 10 in the place ahead of the needle downing position A in left side simultaneously.
As mentioned above, making after wire-hanging hook 3 and looper thread holder 6 move and stop on the above-mentioned holding position, when the S3 of Figure 10, inscribe, 8 pairs of motor of sewing machine 80 of control part, reduce feed mechanism 83 and looper thread and suppress mechanism 84 and send action command.Above-mentioned action command is with reference to needle position signal 22, again rises to send before the position near the top dead-centre after pin 2,2 descends.By this, sewing fabric is carried out the action of making of a pin.Making of an above-mentioned pin is to carry out in the situation of less feeding amount with than common making the time by the action that reduces feed mechanism 83.In addition, making of an above-mentioned pin is to carry out under the state that the action that suppresses mechanism 84 by looper thread makes looper thread 10 be suppressed to sending of looper 1.By this, owing to fastening of the looper thread 10 that can make sewing finishing is better, therefore, can improve the anti-effect that bursts at the seams described later.
As shown in figure 12, wire-hanging hook 3 and looper thread holder 6 continue suture 20 and looper thread 10 are kept, and move until finish the feeding of sewing fabric, and pin 2,2 runs through sewing fabric and descends, the pin 2 in left side passes the suture loop 20a that wire-hanging hook 3 keeps, and catches till this suture loop 20a.At this moment, as shown in figure 12, the looper thread 10 that looper thread holder 6 keeps is positioned at the position of the front side of the pin 2 that crosses the left side.Therefore, the pin 2 in left side can not capture looper thread 10, and this looper thread 10 is only captured by the pin 2 on right side at the rear side of looper 2.
Control part 8 was namely inscribed when the S4 of Figure 10 in the moment that the pin 2 in left side is caught suture loop 20a, and the spacing cylinder 42 of position-limit mechanism is sent action command, made this spacing cylinder 42 elongations, and driver output bar 41 extrudes towards the left side thereupon.By this, as shown in Figure 8, above-mentioned swing arm 9 overcome above-mentioned spring 91 the swing active force and towards counterclockwise swinging, so that the engaging pawl 9a of these swing arm 9 front ends removes and engage with the part of limit component 4, and temporarily the stopping of releasing limit component 4.Operate by the above-mentioned releasing that stops to limit component 4, line operation cylinder 32 is inscribed when S4 and is elongated to greatest extent.By this, as shown in figure 13, wire-hanging hook 3 and looper thread holder 6 swing centered by fulcrum 30 via limit component 4 and connecting rod 35, return from above-mentioned holding position and move to position of readiness, to remove the maintenance to suture loop 20a and looper thread 10.
Then, looper 1 carries out right deactuate when pin 2,2 descends does, and extracts from the suture loop 20a that captures.By extracting above-mentioned looper 1, as shown in figure 14, the pin 2 on right side is the same during with common making to be in the state that captures looper thread 10, and the pin 2 in left side is in the state of the suture loop 20a that captures the left side.
Under above-mentioned state, looper 1 is converted to a left side and advances, and pin 2,2 is converted to rising.As shown in figure 15, suture loop 20a, 20b about the looper 1 that a left side is advanced is caught, the pin 2 of rising, 2 is extracted towards the top of sewing fabric.By this, the suture 20 that looper 1 is caught in the position of the pin 2 on right side to looper thread 10 mutually wind the line (Japanese: he Shito ル ー ピ Application グ), and wind the line with 20 couples of previous suture loop 20a that form of suture in the position of the pin 2 in left side, namely so-called from coiling (Japanese: from Shito ル ー ピ Application グ).
Making after the action of a pin, near pin 2,2 rose to top dead-centre, looper 1 arrived under near the left inlet side the state and finishes.Then, control part 8 standbies are until inputted tangent line signal 23.If when the S5 of Figure 10, inscribe and receive tangent line signal 23, then the tangent line actuator 58 of tangent mechanism sent action command, the action that this tangent line actuator 58 is stipulated, by this, as shown in figure 16, tangent line hook 50 arrives front inlet side along the top of looper 1.At this moment, the first hook portion 52 of tangent line hook 50 leading sections is passed in suture loop 20a, the 20b that looper 1 keeps and is arrived the left side that extends to the looper thread 10 of sewing fabric from the front end of looper 1, and the second hook portion 53 is relative with the suture 20 in left side from the left side.
Then, the tangent line hook 50 that arrives front inlet side carries out right deactuate work.At this moment, the first hook portion 52 catches looper thread 10, the second hook portions 53 and catches successively two sutures 20,20.The looper thread 10 that is caught as mentioned above and suture 20,20 are pulled to the end that is retracted into of tangent line hook 50, and as shown in figure 17, are cut off by the tip end cutting sliding-contact with tangential knife 51.Then, the end of cut looper thread 10 more is being retained the state that is clipped between tangent line hook 50 and the leaf spring 59 by looper 1 one sides than off-position.
Looper thread suppresses mechanism 84 and continues action until finish above-mentioned thread cutting action, thereby the looper thread 10 that extends to sewing fabric from looper 1 front end is applied the tension force of regulation.By this, the first hook portion 52 of tangent line hook 50 front ends can catch does not reliably have lax looper thread 10, and with its cut-out.
After finishing above-mentioned cut-out action, control part 8 standbies are until input has the line signal 24 of dialling.If constantly inputted group line signal 24 at the S6 of Figure 10, then control part 8 exports action command to air pipeline purging device 82 and makes this air pipeline purging device 82 actions.Above-mentioned air pipeline purging device 82 blow out air are so that blow afloat with pin 2,2 continuous sutures 20,20 cut-out end.Then, control part 8 exports action command to presser feet cylinder 81 so that this presser feet cylinder 81 moves constantly at the S7 of Figure 10, thereby the pressing piece that presser feet is used rises to finish a series of anti-action of bursting at the seams.
By the above-mentioned a series of anti-action of bursting at the seams, just can obtain the structure of stitching M that horizontal cartridge type two strands shown in Figure 180 is encircled the double-stranded circumferential weld of Sewing machines.As shown in figure 18, the stitching M that looper thread 10 is passed in double-stranded circumferential weld is formed in the suture loop 20a on right side (being the left side among the Figure 18 that observes stitching M from the sewing fabric back side) at the sewing fabric back side at last, in when action of making of carrying out be used to a pin that prevents from bursting at the seams, before the suture 20 of the homonymy of extracting from the sewing fabric back side, turn back, and the position in again passing the final suture loop 20a on right side is cut off.
On the other hand, when moving for making of a pin that prevents from bursting at the seams, the suture 20 in the left side of extracting from the sewing fabric back side (being the right side among Figure 18) is formed at when being passed in as mentioned above common making in the suture loop 20b in left side at the sewing fabric back side at last, and the final suture loop 20b in left side carried out from coiling, to form the stitching of monocycle seam.Therefore, as shown in figure 18, the state between the suture 20 on the left of looper thread 10 is in and is pressed against and the final suture loop 20b in left side.
In Figure 18, the final suture loop 20b in left side illustrates clearly to represent the winding of itself and suture 20 with lax state, but the final suture loop 20b in actual left side is strained by brute force after suture 20 passes as shown in figure 19, and is in the state identical with the final suture loop 20a on right side.Then, as shown in figure 19, when being stretched towards the direction of arrow in the cut-out end of looper thread 10, the ring that passes the looper thread 10 before the suture 20 on right side dwindles, and is drawn in the final suture loop 20a on right side.Consequently, suture 20 is in the state between the final suture loop 20a that is sandwiched in looper thread 10 and right side, has formed " knotting " shown in Figure 19 by suture 20 and looper thread 10.Because above-mentioned " knotting " also applies resistance on looper thread 10, therefore played the function that prevents that this looper thread 10 from extracting, so, be under the state shown in Figure 19, can preventing that reliably the stitching M of double-stranded circumferential weld from bursting at the seams by the superposition from " the knotting " on winding section and right side in left side.
Below, centered by Fig. 2～Fig. 4, to structure with above detailed description and the anti-stitching of band that carries out the above-mentioned anti-action of bursting at the seams burst at the seams device two strands ring Sewing machines feature structure, namely the present invention is described for the improvement structure that solves the technical problem left over adopt in the patent application that the applicant has submitted to.
Such as Fig. 2～shown in Figure 4, the needle plate platform 11 that is installed on the B of sewing machine base section upper surface is divided into the left side needle plate platform 11L of section and two parts of the 11R of right side needle plate platform section.Above-mentioned needle plate P is installed in the upper surface of the left side needle plate platform 11L of section removedly by limit screw 100, and the 11L of left side needle plate platform section supports the fulcrum 30 as the oscillation center of the wire-hanging hook 3 of above-mentioned suture maintaining body.
On the position, many places, front and back (two positions) of the left part 11L of left side needle plate platform section that is divided into two, close, specifically, on near the front end (left end) of Sewing machines arm C shown by the broken line in FIG. 4, away from the installation position of above-mentioned needle plate P the position, be formed with screw hole 101.By the limit screw member 102 that screws togather with above-mentioned screw hole 101, the 11L of left side needle plate platform section can be tightened and remove on the fixing upper surface that is installed in the B of sewing machine base section (detachable).
In addition, as shown in Figure 3, on the upper surface and the above-mentioned left side needle plate platform 11L of section of the B of sewing machine base section, away from by above-mentioned limit screw member 102 on the position at the position that is tightened that Liang Chu is tightened, be formed with latch 103 and the pin-and-hole 104 chimeric with this latch 103.Also chimeric with it by pin-and-hole 104 being enclosed within from the top on the latch 103, just can orientate the 11L of left side needle plate platform section as assigned position and posture with respect to the B of sewing machine base section, under this state, by above-mentioned limit screw member 102 is screwed into screw hole 101, just the 11L of left side needle plate platform section can be tightened on the upper surface of the B of sewing machine base section.
In addition, in the present embodiment, outstanding towards the top from the upper surface of the B of sewing machine base section to latch 103, the situation that pin-and-hole 104 is formed at the left side needle plate platform 11L of section is illustrated and illustrates, but in addition, it is outstanding towards the below from the lower surface of the 11L of left side needle plate platform section also can be latch 103, and pin-and-hole 104 is formed on the mode on the upper surface of the B of sewing machine base section.
On the other hand, be divided into two the 11R of right side needle plate platform section that forms consist of cylinder erecting bed section that above-mentioned line operation cylinder 32 and spacing cylinder 42 are supported (below, the 11R of this right side needle plate platform section is called cylinder erecting bed section), dispose above-mentioned position-limit mechanism in the bottom of this cylinder erecting bed 11R of section.Specifically, such as Fig. 5～shown in Figure 8, lower surface at the cylinder erecting bed 11R of section passes through the wired operation cylinder 32 of mounting screw 105 fixed bearings, and with the overlapping state configuration limited location cylinder 42 of two-stage, this spacing cylinder 42 is fixedly supported upon on the cylinder erecting bed 11R of section by mounting screw 106 in the bottom of this line operation cylinder 32.
The said cylinder erecting bed 11R of section is assembled on the side of the B of sewing machine base section with stationary state by limit screw member 70.At this, stationary state refers to when the device H that will prevent bursting at the seams is assembled on the B of sewing machine base section by above-mentioned limit screw member 107 is screwed on the position that is fixed on regulation, after assembling, do not carry out position adjustments etc. and just be fixed on state on the assembling position of regulation.
One end (right-hand member) section of above-mentioned connecting rod 35 can be connected on the limit component 4 of position-limit mechanism rotationally by pin screw 108.On the cylinder erecting bed 11R of section at the position corresponding with the connecting portion that utilizes pin screw 108 that an end of above-mentioned connecting rod 35 is connected with limit component to connect, be formed with along the long elongated slot 109 of left and right directions, to allow along with the flexible of line operation cylinder 32 straight reciprocating motion of limit component 4 that can straight reciprocating motion on left and right directions.
In addition, the other end of above-mentioned connecting rod 35 be connected link part 35a that the 3c of the section that extends that wire-hanging hook 3 links to each other is connected towards below the crooked and above-mentioned corresponding degree of depth of roughly amount of thickness that extends the 3c of section.Above-mentioned towards below on the link part 35a of crooked connecting rod 35, be extruded with pin 110 towards the top.On the other hand, extend on the 3c of section above-mentioned, be formed with and be enclosed within on this pin 110 from the top of above-mentioned pin 110 and the connecting hole 111 that can extract towards the top.By this, when removing fixedly it being taken off from the B of sewing machine base section of the left side needle plate platform 11L of section and the B of sewing machine base section, do not need to carry out to 35 that be fixedly connected with the section 3c of extending with connecting rod, unscrew operation such as limit screw etc. and remove both such operations of linkage status, only by mention the left side needle plate platform 11L of section towards the top, just the connecting hole 111 that extends the 3c of section can be pulled out towards the top from pin 110 and be removed connecting rod 35 and extend the 3c(of section wire-hanging hook 3) linkage status.In addition, when the 11L of left side needle plate platform section is installed on the B of sewing machine base section, the also only operation by the left side needle plate platform 11L of section is moved towards the B of sewing machine base section from the top just can be enclosed within connecting hole 111 on the pin 110 and makes connecting rod 35 and extend the 3c(of section wire-hanging hook 3 from the top) return linkage status.In addition, the link part 35a of connecting rod 35 may not be crooked towards the below.That is to say that it is flat tabular that connecting rod 35 also can be on its total length.
And, the swing arm 9 of above-mentioned position-limit mechanism is supported to the swing arm erecting bed (movable table) 92 that can centered by the fulcrum 90 of above-below direction, swing with by the long slotted hole 93 of left and right directions and limit screw 94 and mode that can the left and right adjusting position is installed on the cylinder erecting bed 11R.Even if after the cylinder erecting bed 11R of section is assembled in sewing machine base B by limit screw member 107 with stationary state, also can be by regulating swing arm erecting bed 92 positions, the left and right sides with respect to the cylinder erecting bed 11R of section, at random regulate looper 1 from opportunity that the suture loop 20a that remains in wire-hanging hook 3 extracts, by this, can carry out reliably be used to the certainly coiling that prevents that stitching from bursting at the seams.
Comprising that the anti-stitching that adopts feature structure discussed above bursts at the seams in the double-stranded ring of the horizontal cartridge type Sewing machines of present embodiment of device H, to prevent that stitching bursts at the seams device H when being assembled into the B of sewing machine base section, can with about the left side 11L of needle plate platform section of the needle plate platform 11 that is divided into two and the cylinder erecting bed 11R of section on right side be installed on respectively the B of sewing machine base section.Therefore, such with the patent application technology that the applicant has submitted to, process the situation of a not only long but also large needle plate platform and compare, can carry out like a cork bursting at the seams device H integral installation (assembling) in the operation of the B of sewing machine base section with anti-with less strength.
In addition, the temporary transient cylinder erecting bed 11R of section with the needle plate platform 11(left side needle plate platform 11L of section and right side) is assembled in after the B of sewing machine base section, at needs by to such as looper 1 and drive with member etc., be positioned at needle plate platform 11 bottoms and be housed in the position of the member that the formation of sewing machine base section B inside makes and situation that movement locus correction is regulated sewing performance under, or need to the various parts that be positioned at needle plate platform 11 bottoms and be housed in sewing machine base section B inside keeped in repair, change and wait in the situation about safeguarding, to with snorkel 33, the 43 line operation cylinders 32 that connect and spacing cylinder 42 firmly fix the cylinder erecting bed 11R of section that is bearing on the assigned position when assembling not to be needed to take off from the B of sewing machine base section, as long as after removing the fixing of the left side needle plate platform 11L of section and the B of sewing machine base section it is taken off, just can guarantee enough large working space.
Therefore, as long as the adjusting of to small and light and do not have the 11L of left side needle plate platform section that snorkel 33,43 twines to process, just can be very easy to, simple and good work ground carrying out sewing performance reach to the various parts that are housed in sewing machine base section B inside keep in repair, the maintenance such as replacing.By this, can give play to high repeatability the anti-function that bursts at the seams of good sewing performance and regulation all the time, and can eliminate residual technical problem in the patent application technology that the applicant has submitted to.
In addition, as described in present embodiment, by adopting the structure that the swing arm 9 of position-limit mechanism is positioned at the direction swing application of force of above-mentioned position of readiness towards the wire-hanging hook 3 of suture maintaining body with spring 91, utilize the active force of spring 9 just can carry out limit component 4 towards the action (wire-hanging hook is positioned at the action of the direction of position of readiness) of Return-ing direction, so can use single-lift cylinder to be used as making to engage with the part of limit component 4 and the spacing cylinder 42 of swing arm 9 actions of engagement release, thereby, can realize miniaturization, the cost degradation of spacing cylinder 42.
In addition, as present embodiment, by adopting the structure that the spacing cylinder 42 of the line operation cylinder 32 of suture maintaining body and position-limit mechanism is fixedly attached to the lower surface of the said cylinder erecting bed 11R of section with the overlapping state of two-stage up and down, with the patent application technology of having submitted to such as the applicant with two cylinders 32,42 situations that are configured in position separated from one another (and row arrangement) are compared, can dwindle two cylinders 32,42 occupied plane spaces, and make the anti-device H overall compact that bursts at the seams, and can make the anti-device H that bursts at the seams be housed in the inside of the B of sewing machine base section with good form.
In addition, as present embodiment, by adopting the structure that looper thread holder 6 is installed at the wire-hanging hook 3 of suture maintaining body, when realizing simple structure, can position suture 20 and looper thread 10 reliably, wherein, above-mentioned looper thread holder 6 by with above-mentioned wire-hanging hook 3 between above-mentioned hanging wire position, holding position and the position of readiness centered by the fulcrum 30 of above-below direction and with the face of needle plate P almost parallel in swing, will remain on from the looper thread that looper 1 extends to sewing fabric the front side of the down position of pin 2.By this, can implement reliably from coiling, and the effect that anti-stitching is burst at the seams is more reliable.
Particularly, by above-mentioned looper thread holder 6 is installed in the mode of the relative position that can regulate itself and above-mentioned wire-hanging hook 3, can set suitably the relative position of suture 20 and looper thread 10, and can implement more reliably further to improve from coiling and prevent the stitching effect that bursts at the seams.
In addition, as present embodiment, make pin 110 outstanding towards the top from the link part 35a of connecting rod 35 by employing, and the such structure of connecting hole 111 that can be enclosed within on this pin 110 from above-mentioned pin 110 tops and can extract towards the top in the upper formation of the link of wire-hanging hook 3 sides part (extending the 3c of section), in order to carry out the adjusting of sewing performance, the various parts that are housed in sewing machine base section B inside are keeped in repair, the maintenances such as replacing, and remove the fixing of the left side needle plate platform 11L of section and the B of sewing machine base section from upper surface, and when it is taken off towards the B of sewing machine base section top, do not need to unscrew being connected with screw or will connecting the operation of extracting such trouble with pin between the 3c of the section that extends of connecting rod 35 and wire-hanging hook 3 sides, as long as mention the left side needle plate platform 11L of section towards the top, just can remove being connected of wire-hanging hook 3 and connecting rod 35.In addition, after carrying out above-mentioned adjusting and safeguarding, as long as the 11L of left side needle plate platform section is fixedly installed in the B of sewing machine base section from the top, just can make wire-hanging hook 3 and connecting rod 35 return the connection status of regulation.By this, can further simplify above-mentioned adjusting and the step when safeguarding.
In addition, in the above-described embodiment, be illustrated as the situation of hook actuator and spacing actuator using cylinder, but as above-mentioned actuator, also can use o etc.
In addition, in the above-described embodiment, the Sewing machines that forms the stitching of double-stranded circumferential weld by two sutures 20,20 and looper threads 10 is illustrated, but also can be applied to form the Sewing machines of the stitching of the multi-needle double chain circumferential weld that uses three above sutures, form the Sewing machines of the stitching of the double-stranded circumferential weld of single needle that uses a suture, can be applicable in addition the double-stranded ring of the upper decorative thread Sewing machines that decorative thread is made on the stitching of double-stranded circumferential weld carries out.
In addition, in the above-described embodiment, a suture loop of catching in two sutures 20, the 20 formed suture loop is held it in above-mentioned holding position, and carry out after the action from coiling carrying out making of a pin under the above-mentioned state, prevent that situation about bursting at the seams is illustrated, hold it in above-mentioned holding position but also can catch a plurality of suture loop, in addition, the action of making of carrying out under above-mentioned hold mode is not limited to a pin, also can be two pins or more than two pins.
In addition, in the above-described embodiment, looper thread holder 6 is installed on wire-hanging hook 3 with the state that screws together, and the situation that makes looper thread holder 6, wire-hanging hook 3 carry out integratedly wobbling action is illustrated, but also can be with looper thread holder 6 and wire-hanging hook 3 split settings, and make looper thread holder 6 single movements by the dedicated actuator different from the line operation cylinder 32 that makes wire-hanging hook 3 action usefulness.
In addition, and the nonessential looper thread holder 6 that arranges.
By being divided into two about needle plate platform edge, and respectively the needle plate platform section in left side and the cylinder erecting bed section on right side are processed, thereby can with less strength will prevent like a cork bursting at the seams device integral installation (assembling) to sewing machine base section, regulate sewing performance, the various parts that are housed in sewing machine base section inside keeped in repair and the maintenance such as replacing, thereby can be applied to ideally double-stranded ring Sewing machines.

Claims (14)

1. the anti-stitching of the band two strands ring Sewing machines of device that bursts at the seams comprises:
Pin, this keeps for suture and moves up and down; Looper, this looper looper thread is kept and can along with the roughly direction advance and retreat action of quadrature of path that moves up and down of described pin, when forward motion, catch the suture loop that described pin forms under needle plate; And needle plate platform, this needle plate platform is equipped with described needle plate and is installed on the upper surface of sewing machine base section, by utilizing described looper to catch the suture loop that described pin forms under described needle plate, with the looper thread that utilizes this looper to be kept described suture is wound the line mutually, thereby form the stitching of double-stranded circumferential weld at sewing fabric
The burst at the seams two strands ring Sewing machines of device of the anti-stitching of described band also comprises:
The suture maintaining body, this suture maintaining body has wire-hanging hook and hook actuator, wherein, described wire-hanging hook can carry out near and deviates from action with respect to described looper, and away from the position of readiness of described looper and near between the hanging wire position of described looper centered by the fulcrum of above-below direction with the face of needle plate almost parallel in swing, described hook actuator drives described wire-hanging hook and swings between described position of readiness and hanging wire position;
Position-limit mechanism, this position-limit mechanism has limit component and spacing actuator, wherein, described limit component is configured in wire-hanging hook than described suture maintaining body on the position of described needle plate, and can make the swing of described wire-hanging hook from the hanging wire position to position of readiness temporarily stop and removing stopping, remain on holding position between described hanging wire position and the position of readiness with the suture loop that described wire-hanging hook is caught in described hanging wire position, described spacing actuator carries out the described of described limit component and stops and removing stopping;
Connecting elements, this connecting elements is connected the wire-hanging hook of described suture maintaining body in linkage with the limit component of described position-limit mechanism; And
Control part, this control part is controlled, make moving up and down of described suture maintaining body and position-limit mechanism and described pin, the advance and retreat action of looper and the feeding action of sewing fabric are associated, finishing to make described looper carry out forward motion after common the making, and the wire-hanging hook of described suture maintaining body is carried out near action with respect to this looper, so that the described suture loop of catching in described hanging wire position moves to described holding position, and keep above-mentioned state, until described pin passes the suture loop of being caught by described looper and descends, the described position of then removing described suture loop and looper thread keeps, carry out the action of making of at least one pin
The burst at the seams two strands ring Sewing machines of device of the anti-stitching of described band is characterised in that,
Described needle plate platform is divided into two into left side needle plate platform section and right side needle plate platform section, wherein, described left side needle plate platform section is equipped with described needle plate and the swing fulcrum of described wire-hanging hook is supported, described right side needle plate platform section is fixed supporting to described limit component, described hook actuator and spacing actuator
Described right side needle plate platform section is fixed in described sewing machine base section, and left side needle plate platform section is installed on the upper surface of described sewing machine base section can be tightened and remove fixing mode by screw member.
2. the anti-stitching of the band as claimed in claim 1 two strands ring Sewing machines of device that bursts at the seams is characterized in that,
Also comprise the minimizing feed mechanism, in when action of making of described at least one pin, the action command that this minimizing feed mechanism sends according to described control part, less feeding amount is carried out feeding to sewing fabric with than common making the time.
3. the anti-stitching of the band as claimed in claim 1 two strands ring Sewing machines of device that bursts at the seams is characterized in that,
Comprise that also looper thread suppresses mechanism, make after described looper thread is positioned at the front side or rear side of down position of described pin that described looper thread suppresses the action command that mechanism sends according to described control part, suppresses to send looper thread to described looper.
4. the anti-stitching of the band as claimed in claim 1 two strands ring Sewing machines of device that bursts at the seams is characterized in that,
Described position-limit mechanism is made of limit component, swing arm, spring and described spacing actuator, wherein, described limit component directly is connected with described hook actuator and moves along linear reciprocation, described swing arm can engage and engagement release with the part of described limit component, described spring is to the described swing arm application of force, it is swung towards the direction that described wire-hanging hook is positioned at described position of readiness, and described spacing actuator overcomes the active force of described spring and described swing arm is removed and the engaging of the part of limit component.
5. the anti-stitching of the band as claimed in claim 4 two strands ring Sewing machines of device that bursts at the seams is characterized in that,
The swing arm of described position-limit mechanism is installed in the mode that can regulate position, the left and right sides and is installed on the movable table of described right side needle plate platform section.
6. the anti-stitching of the band as claimed in claim 4 two strands ring Sewing machines of device that bursts at the seams is characterized in that,
The hook actuator of described suture maintaining body and the spacing actuator of described position-limit mechanism are fixedly attached to the lower surface of described right side needle plate platform section with the overlapping state of two-stage up and down.
7. the anti-stitching of the band as claimed in claim 1 two strands ring Sewing machines of device that bursts at the seams is characterized in that,
The actuator that also is provided with the looper thread holder and this looper thread holder is swung, wherein, described looper thread holder by with the wire-hanging hook of described suture maintaining body between described hanging wire position, holding position and the position of readiness with the face of described needle plate almost parallel in swing, will remain on from the looper thread that described looper extends to sewing fabric the front side of the down position of described pin.
8. the anti-stitching of the band as claimed in claim 1 two strands ring Sewing machines of device that bursts at the seams is characterized in that,
Described looper thread holder is installed on described wire-hanging hook with the state that is tightened on together, thereby and the wire-hanging hook of described suture maintaining body integratedly between described hanging wire position, holding position and the position of readiness centered by described fulcrum with the face of needle plate almost parallel in swing.
9. the anti-stitching of the band as claimed in claim 8 two strands ring Sewing machines of device that bursts at the seams is characterized in that,
Described looper thread holder is installed on described wire-hanging hook in the mode of energy adjusting position.
10. the anti-stitching of the band as claimed in claim 1 two strands ring Sewing machines of device that bursts at the seams is characterized in that,
The hook actuator of described suture maintaining body and the spacing actuator of described position-limit mechanism all are cylinders.
The two strands ring Sewing machines of device is characterized in that 11. the anti-stitching of band as claimed in claim 1 bursts at the seams,
On the link of the described connecting elements part from this link part towards above be extruded with pin, and the link of wire-hanging hook partly be formed with can be enclosed within above the described pin on this pin and can towards above the connecting hole extracted.
The two strands ring Sewing machines of device is characterized in that 12. the anti-stitching of band as claimed in claim 1 bursts at the seams,
Described left side needle plate platform section or sewing machine base section, away from a plurality of a plurality of positions that are fixedly connected with and remove connecting portion of being undertaken by described screw member on, be extruded with and can make left side needle plate platform section with respect to the latch of sewing machine base section location, sewing machine base section or described left side needle plate platform section be formed with can be chimeric with described latch pin-and-hole.
The two strands ring Sewing machines of device is characterized in that 13. the anti-stitching of band as claimed in claim 1 bursts at the seams,
Sewing machines as object is the double-stranded ring of horizontal cartridge type single needle Sewing machines.
The two strands ring Sewing machines of device is characterized in that 14. the anti-stitching of band as claimed in claim 1 bursts at the seams,
Sewing machines as object is horizontal cartridge type multi-needle double chain ring Sewing machines.
CN201210279199.7A 2011-08-08 2012-08-07 Burst at the seams the double-strand ring sewing machine of device with anti-stitching Active CN102926142B (en)

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EP2742177B1 (en) 2019-10-09
JP5522577B2 (en) 2014-06-18
CN102926142B (en) 2016-12-21
JP2013034812A (en) 2013-02-21
EP2742177A1 (en) 2014-06-18
US20150136004A1 (en) 2015-05-21
EP2742177A4 (en) 2015-04-22
RU2563755C1 (en) 2015-09-20
TWI523985B (en) 2016-03-01
KR101955279B1 (en) 2019-03-08
WO2013022115A1 (en) 2013-02-14

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