CN101012602A - Thread control device for a sewing machine - Google Patents
Thread control device for a sewing machine Download PDFInfo
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- CN101012602A CN101012602A CNA2007100860489A CN200710086048A CN101012602A CN 101012602 A CN101012602 A CN 101012602A CN A2007100860489 A CNA2007100860489 A CN A2007100860489A CN 200710086048 A CN200710086048 A CN 200710086048A CN 101012602 A CN101012602 A CN 101012602A
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- Prior art keywords
- suture
- sewing machines
- thread
- take
- eedle
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B49/00—Take-up devices, e.g. levers, for the needle thread
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B47/00—Needle-thread tensioning devices; Applications of tensometers
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- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
A sewing machine having a reciprocatory needle and a reciprocatory thread-take-up device to deliver thread to the needle employs a thread control device located between the thread take-up device and the needle to engage and apply light tension to the thread. The thread control device can have two opposed plates between which the thread runs and which cooperate to apply spring pressure to the thread, for example, a guide plate and a spring plate. The guide plate or other device can include catcher structure to catch thread escaping the take-up device. The thread control device can help control premature descent of the thread and improperly tensioned stitches.
Description
Technical field
The present invention relates to the Sewing machines of a kind of Sewing machines mechanism and this mechanism of use.The invention particularly relates to, but not exclusively relate to domestic sewing machine, and, if desired, can be industry or other Sewing machines etc.In a word, the present invention will provide a kind of novel and improved thread control device that is used for above-mentioned Sewing machines.
Background technology
With the chain type two-wire or multi-threadly fabric or other sheet material are connected or be sewed together when forming lock-type chain stitch, Sewing machines is easy to take place suture control problem.The present invention also is applicable to the single-thread sewing machine that is easy to produce the line traffic control problem.For for simplicity, above-mentioned Sewing machines all is known as " lock-type chain stitch machine " and " lock stitch sewing machine " at this.The complexity that needs reciprocating traditional lock stitch sewing machine of a plurality of wire elements sometimes can make the sewing thread of being moved to the workspace or too much or very little.People expect taking measures on known Sewing machines very naturally, as provide line tension regulating system and various cable guiding device to control this class problem.But nonetheless, problem still occurs, and for example meeting surplus of the line in the suture needle or tension, complicated tension-adjusting gear and plain conductor device cause the threading difficulty.
As everyone knows, on the existing two-wire lock stitch sewing machine, reach the standard grade and be passed down through pinprick in top, and the bottom bobbin thread is upwards supplied to the workbench that fabric moved in the process of making.Fabric is a single or multiple lift.
The eedle of Sewing machines can be installed on the shank that crank drives and is in vertical reciprocating motion.Provide from shuttle by the shuttle that in horizontal plane, moves reciprocatingly and to roll off the production line.The reciprocating motion of shuttle is coordinated mutually with the motion of pin, to form required stitching in the fabric kind at eedle on down stroke.But the dual reciprocating motion of control shuttle and eedle makes two lines that the coil surplus can not take place in the workspace or suture tensioning improperly is then relatively more difficult.Coil may tangle on machine, when the high strung of the tension of line, then can make thread breakage, causes braking brake or infringement machine.
The data that can find a kind of generation type to many styles lock-type chain stitch to be described in detail in the prior art, as " faggot-stitching machine " by Johnson (R.E.Johnson) of Singh company (The Singer Company) invention, U.S. Patent number is No.2862468, announces on December 2nd, 1958.Other method or device that forms lock-type chain stitch or corresponding stitching also is conspicuous for a person skilled in the art, and, also can be used for the present invention if desired.Above-mentioned line tension device has two disks that sewing thread is exerted pressure, and makes the number of division of selecting on tension force and the disk consistent, has one to adjust thickness or the relevant line amount of stitching type that the spring spring wire is controlled the process of making and fabric.
Although there is other measure above-mentioned and of the prior art, yet still there is the suture control problem of undesirable scarce line or tension in some Sewing machines.
The front may comprise judgement, discovery, understanding, announcement or comprehensive contact etc. to prior art known but not related to the present invention to the description of background technology, but these all can relate in the present invention.Some contribution of the present invention may particularly point out at this, and the contribution meeting of others is embodied in context.May be at this document of quoting because they are complete different and do not introduce its technical field with the present invention, but it and technical field of the present invention are close.
Summary of the invention
On the one hand, the invention provides a kind of Sewing machines, comprise a kind of eedle, be installed into towards with move reciprocatingly away from garment piece.This Sewing machines also comprises reciprocal take-up device, with the supply line of control to eedle, garment piece and thread control device.Described thread control device comprises line brush or other suitable components, is installed between thread take-up tension lever and the eedle, when line moves between thread take-up tension lever and eedle, engages with line, positions and provide tension force.
The present invention also provides a kind of Sewing machines, and the demand of suture is controlled by the stitching form.Alternatively, be not fully by the thread take-up tension lever decision to the control of suture, perhaps in addition the backspring that can be independent of take-up device or take-up device in a way carry out.
The present invention also provides a kind of Sewing machines, and its thread control device carried out before eedle thrusts fabric the control of thread tension, also controls the selection of time of thread take-up tension lever at down position simultaneously.
In another embodiment of the present invention, thread control device can comprise a guide plate, this guide plate has the suture engaged surface, and is extending on the suture direction of motion between take-up device and the eedle on this surface, and suture passes this suture engaged surface in Sewing machines work process.
Thread control device provided by the invention can help to control suture landing and the irregular stitching of tension force too early.
One embodiment of the present of invention comprise the thread control device that is used for Sewing machines, especially, but are not to be used for lock stitch sewing machine exclusively, and this device can effective, easierly carry out threading.This suture control system or device can comprise that guide plate, spring wire and line keep brush, this line brush and stitch bond and control this suture when suture is supplied to eedle.The present invention includes the embodiment of the motion path near linear of suture when thread control device is passed in operation.This suture can almost move with straight line.
In useful embodiment of the present invention, spring wire spring wire and line brush only provide slight resistance to suture, and this resistance can be enough to control the suture stream of eedle, and also light being enough to simultaneously makes the accessible withdrawal of suture when returning eedle.In another embodiment of the present invention, guide plate can have an exterior contour to help the inappropriate stitching that stops suture landing too early to cause.Guide plate can be configured as and support suture when thread take-up tension lever descends.
Another embodiment of guide plate is to be constructed to be captured in the suture deviate from from thread take-up tension lever in the thread take-up tension lever decline process.In order to reach this purpose, guide plate can comprise that is caught a line device mechanism, for example is located at seam or groove below the spring wire by what (with respect to the user) outstanding flank up and down defined.This motion of catching the line device is promoted by the thread guide that is installed in correct position.
Many Sewing machiness comprise lock stitch sewing machine, all adopt thread take-up tension lever, are used for controlling on the eedle of up-and-down movement transmitting suture.When adopting thread control device of the present invention on such Sewing machines, it can be installed in thread take-up tension lever and between the eedle in thread take-up tension lever downstream.
The present invention also is suitable for being used on the Sewing machines that has the thread tension adjuster of being made up of a pair of tension pulley of relative motion.Having on the Sewing machines of thread take-up tension lever, described bracing cable device is usually located at the upstream of thread take-up tension lever.For this Sewing machines, can as required thread control device of the present invention be arranged on the downstream of bracing cable device.
Have in the additional embodiments of tension pulley and thread take-up tension lever or similar device at Sewing machines, in the transport process of suture from the tension pulley to the thread take-up tension lever, tension pulley is in closure state, the flank of the big guide plate of thread control device and the thread guide that is mated will be united the suture on the thread take-up tension lever will be caught line, and make suture pass spring wire and big guide plate.
A beneficial effect of embodiments of the invention just provides a kind of thread control device, it can be controlled or tensioning is in the suture in thread take-up tension lever downstream, prevent the incipient quick landing of suture and cause the lax and stitching entanglement of suture that the resistance that provides of this thread control device is quite little simultaneously when suture installs by this.
The present invention also provides a kind of Sewing machines embodiment, and this Sewing machines has effective thread control device, and this device has suture engaged plate and metal wire, is arranged on the downstream of thread take-up mechanism, and provides slight resistance to increase its tension force to the suture in transmitting.On this Sewing machines, the suture amount that suture engaged plate and metal wire will help predetermined eedle and loop taker to need, thus carry out accordingly for the line operation.
The Sewing machines of the embodiment of the invention comprises thread control device, and its big guide plate that adopts has outstanding forward flank, slit of the local qualification of this flank.The adjacent setting of thread guide that shape is suitable with slit, and match with slit and flank, even suture does not enter the thread tension device, also can help in the take-up process, to catch line.
Other purpose of the present invention and beneficial effect will be seen in the process of reading specification in conjunction with the accompanying drawings.
Description of drawings
The present invention and manufacturing or use embodiments of the invention, and expection realization best way of the present invention will be described in detail below in conjunction with the accompanying drawings.Reference numeral identical in these accompanying drawings is represented components identical, wherein:
Fig. 1 is the head end front view of domestic sewing machine, removes cover, can see the thread control device of one embodiment of the invention;
Fig. 2 is the left view of Sewing machines head end shown in Figure 1, by being moved further the cover under the eedle, can arrive thread control device shown in Figure 1 from another viewpoint;
Fig. 3 is and the top of the similar thread control device of Fig. 2, has the suture that is in primary importance when pin descends;
Fig. 4 is similar with Fig. 3, and the expression pin is in the suture of the second place when descending;
Fig. 5 is the view along the 5-5 direction of Fig. 2, and expression is in the thread control device of different angles, the thread guide of guiding suture and the suture on the thread take-up tension lever;
Fig. 6: similar with Fig. 3, be the thread control device of another embodiment of the present invention.
The specific embodiment
Below carry out according to front and the described simplified summary of context and background technology about more detailed description of the present invention, but be not limited to the description of front.
In whole description, description scheme has, comprises or comprise specific components, or the description process has, comprises or comprise specific step, can expect that composition of the present invention can also be made up of the assembly that is cited in fact, or be made up of the assembly that is cited.。
Among the embodiment according to a useful lock stitch sewing machine of the present invention, the bobbin that suture is installed from level extends to cable guiding device and pre-tension device, arrives tensioner place, disc type slit then.By these tread controllers, suture passes the take-up device, as thread take-up tension lever, by thread control device provided by the invention, enters eedle more subsequently.The take-up device is set stitching, and draws back suture lax on the thread control device.The take-up device moves back and forth the suture on the thread control device.In one direction, the take-up device can move to the stitching position of an end of its working range.In the opposite direction, the take-up device also can move to its working range the other end do not have a suture position.Move the end of its working range when the take-up device after, the suture in this device will move to the position that cooperates once again with the take-up device, shortening the distance of suture between eedle and tensioner, for eedle and loop taker prepare a certain amount of suture.
In one embodiment, the invention provides a kind of domestic sewing machine suture that is used for and handle or thread control device, this device comprises two from the outstanding plate of the head section of Sewing machines, and in the time of between suture is through two plates, plate contacts with suture.
As depicted in figs. 1 and 2, be used for that family expenses are made or the head portion 1 of the Sewing machines that the suitable occasion of other family expenses is used comprises workbench 2 and head of sewing machine 3.Accompanying drawing has only provided the part of whole Sewing machines.The part of not expressing can be any known suitable components form in the prior art, such as band portable unit or desktop apparatus.It is contemplated that the present invention supports or is installed on table top, bench or other analog and operated by the user who is seated, and is very useful.Can certainly find out significantly that the present invention also is applicable to the sewing device of other type.Here to the description of direction, as " preceding ", " back " or " back of the body ", " on ", D score, " left side ", " right side ", all be from operator's angle.
As shown in drawings, shank 4 is driven to do by balanced crank 5 and pumps.Crank 5 links to each other with shank 4 by armshaft 6, connecting rod 7 and pivot 8.By accompanying drawing 1 and 5 as can be seen, connecting rod 7 driving shanks 4 are synchronized with the movement with rotary hook 10.
Eedle 9 is installed on the shank 4.To upper/lower positions, eedle 9 is synchronous with rotary hook 10 at shank 4.In workbench 2, it is on 50 the reciprocal hook driven unit that rotary hook 10 places common label, and this reciprocal hook driven unit drives rotary hook 10 and becomes timing relationship with armshaft.Cooperate with the motion of eedle 9, by rotary hook 10 line 11 is pulled out from shuttle (not shown) and form lock-type chain stitch.The generation type of lock-type chain stitch has a detailed description in " faggot-stitching machine " that on December 2nd, 1958, to authorize U.S. Patent number Johnson (R.E.Johnson), that transfer Singh company (The Singer Company) be No.2862468.Other method or device that forms lock-type chain stitch or corresponding stitching has been the technology of knowing also, also can be used in the embodiments of the invention if desired.
Suture 11 is delivered to eedle 9 by thread control device 16, thread take-up tension lever 17 and line tension device 18.Line tension device 18 comprises a pair of co-operating tension pulley 22 and 23, and tension pulley 22 allows that suture is relative to be passed through freely when 23 open, or when closed then with the suture tensioning.Thread control device 16 comprises opposed spring wire 24 and guide plate 25, will do detailed description hereinafter.Spring wire 24 and guide plate 25 are arranged near the eedle 9, and for example, thread control device 16 can be arranged on the upstream of eedle 9, a little more than eedle 9.
During Sewing machines work, suture 11 from placing the line tube on the horizontal spools (not shown) to pull out, is transported to line tension device 18 by cable guiding device 41,19,20 and 21.As shown in the figure, cable guiding device 41 comprises the wire clamp of a staggered form clip, and it can grip suture gently along between two position spaced of line.This kind wire clamp guider can prevent that principal vertical line enters the winding that is distorted before the cable guiding device 19, and it is irregular to help to reduce in the process of making the fluctuation of thread tension.Suture arrives thread take-up tension lever 17 from passing between the tension pulley 22 and 23 of line tension device 18, and the profile 26 from guide plate 25 passes then, is passed down through thread control device 16.At this, the metal wire 24 that opposition is provided with and guide plate 25 is embraced suture and grip suture 11 with small pressure for it, and its motion is controlled.
In the downstream of thread take-up tension lever 17 and thread control device 16, suture 11 is directed near the shank 4 through line brush 27 and cable guiding device 28, passes pinprick to be reached the standard grade 29 then and arrives at eedle 9.Carrying out each stitching circulation time, suture 11 drives through thread control device 16 and by thread take-up tension lever 17 and moves upward, then by eedle 9 that moves downward and the descending thread take-up tension lever 17 that leaves of rotary hook 10 tractions.When down stroke, 9 pairs of lines 11 of eedle apply tension force and draw its downward operation.When up stroke, move upward with eedle 9, suture 11 becomes slack near eedle.
With compare from backing plate 27a level is outstanding, line brush 27 has a significant vertical depth on section, it just has as shown in Figure 1 block outward appearance like this.Line brush 27 can be made by foam, felt hair or other suitable material.In one embodiment, line brush 27 can comprise the outstanding suitable materials such as foam, felt hair or fiber from backing plate 27a, and this line-transect brush 27 can pass between bristle or fiber.As required, bristle or fiber have the elasticity of appropriateness, are made by synthesizing polymeric material or other suitable material, as nylon or oriented polypropylene (OPP).Under this situation or other suitable manner, line brush 27 just contacts and guiding suture 11 closely in a kind of submissive mode.
In addition, when suture 11 brushes 27 by line, in some cases, line brush 27 fine hair that can also remove on the suture 11.
When sliding knob 39 when channel suspending rail 40 slides between upper/lower positions thereon, depend on the adjusting position of sliding knob 39, tension pulley 22 and 23 will more or less be exerted pressure to suture, to increase or to reduce suture 11 tension force.
Thread take-up tension lever 17 is fixed on the armshaft 6 by line-choosing connecting rod 36, and rotating being connected to connects connecting rod 7 and crank 5.The rotation of armshaft 6, make thread take-up tension lever 17 crank 5 drive and by line-choosing connecting rod 36 to its movement guide under, impose on thread take-up tension lever 17 with back and forth moving up and down along the right side of guide plate 25, with 10 one-tenth timing relationships of eedle 9 and rotary hook.Thread take-up tension lever 17 has a hook 55, locates on one point to stop and makes it have proper angle to hold at threading with after throwing line and to guide suture 11.
Below spring wire 24, guide plate 25 also is provided with the slit 70 that is limited by outstanding flank 37, is loaded with thread guide 38 on flank 37, and contiguous with flank 37.When depression bar 15 downwards and tension pulley 22 and 23 closures when reaching the standard grade to machine,, flank 37 and thread guide 38 cooperate and help thread take-up tension levers 17 to catch line.Loose suture 11 will run into flank 70 and/or thread guide 38, and be directed to slit 70 by its shape, this by good location to be grasped by thread take-up tension lever 17.In thread take-up tension lever 17 motion processes, the suture of deviating from also can be captured or keep in this way.
On demand, the shaping of guide plate 25 and Position Design can support suture 11 in thread take-up tension lever 17 decline processes.Suitable guide plate 25 as shown in the figure, comprises a firm relatively flat board, support spring silk 24 in the Sewing machines course of normal operation.As shown in the figure, guide plate 25 is elongation types, when its when thread take-up tension lever 17 moves to eedle 9, in vertical direction, extend along suture 11 motion paths.In addition, in an illustrated embodiment, guide plate 25 extends support wire device 27 and other useful structure downwards.Be appreciated that guide plate 25 can have multiple other version, can form the proper supporting face, suture 11 is passed through smoothly.For example, can select the illustrated integrally-built guide plate 25 that is made up of multiple elements.
In one embodiment of the present of invention, guide plate 25 is by steel plate, and especially corrosion resistant plate is made, and has nickel plating chromium mirror finish and handles the smooth surface that forms.As required, guide plate 25 can provide low friction, durable contact surface to suture 11, and line 11 can passed on this surface under the light pressure that spring wire 24 applies.Except the polished steel raw material, the material that other smooth surface had than the long life also can be applied to this, and guide plate 25 can be made up of the material of high-hardness wear-resistant as required, as iron and steel.Selectable, if desired, guide plate 25 can have with what polymeric material such as polytetrafluoroethylene (PTFE) were done and have a low-friction surface, can be to replace inserts or element.
Descend in order to help to control suture, guide plate 25 has the top profile 26 that suture 11 passes from it, this profile 26 can have a pact flatly to extend to the operator but extend the shape of leaving head of sewing machine 3, and suture can be shelved or supported in shape at this in suture 11 decline processes.As required, the shape of profile 26 is matched in operation with the thread take-up tension lever 17 that has the hook 55 that holds line 11, help suture to carry out the location, side.The top profile 26 of guide plate 25 can end in recess 56 backward, on the lid (not shown) that is placed in Sewing machines.For a suitable example, as shown in the figure, the top profile 26 of guide plate 25 can comprise that guide edge straight, slight inclination 58 connects flanks 60 crooked or circle, flank 60 leads to oriented manipulation person's a straight vertical edges 62.Turning forward of the profile 26 of guide plate 25 can be with suture guide hook 55.If desired, when thread take-up tension lever 17 moved upward, flank 60 can help suture 11 is positioned between guide plate 25 and the spring wire 24.
Manually one or two point of " W " is exerted pressure, can make spring wire 24 sleds, in carrying line process, allow suture 11 to enter between spring wire 24 and the guide plate 25 like this from guide plate 25.
In Sewing machines work process, 10 one-tenth timing relationships of thread take-up tension lever 17 and rotary hook move up and down.When thread take-up tension lever 17 is in upper position, its extreme higher position in the suture 11 On-line Control devices 16, continuity is extended on the profile 26 of guide plate 25 upsides.When thread take-up tension lever 17 began to descend, suture 11 remained on top, profile 26 and the line brush 27 of guide plate 25 temporarily.When thread take-up tension lever 27 descends, the structure of profile 26 and line brush 27 is auxiliary suture 11 is remained on the thread control device 16 or in, prevent the suture overrelaxation.In case suture 11 should be deviate from thread control device 16, in thread take-up tension lever 17 upward strokes, 44 of the light spring structure of thread control device silk 24 and adjustment parts thereof can make suture 11 easily enter once more between spring wire 24 and the guide plate 25.
When eedle 9 moved downward, power that the profile 26 of guide plate 25, spring wire 24 apply and line brush 27 cooperated, and provide a slight friction clamping to suture 11, thereby keep controlled tension force in the suture when suture is pulled through Sewing machines.This controlled tension force can prevent to offer suture 11 excess of eedle 9, and helps prevent the stitching tension fluctuation irregular, occurs bouncing pilotage and fag end etc. on fabric.
When thread take-up tension lever 17 in device when upwards moving, be rotated the lax suture that hook 10 casts aside and upwards driven to be formed stitch structure by on the material of making by thread take-up tension lever 17.Spring wire 24 can provide the structure of slight tension force to suture 11, make the thread take-up tension lever 17 can be apace with the lax removal in the suture 11, this can not apply excessive tension to suture, in order to avoid can cause slippage to pass through line tension device 18, avoids having when making forward unwanted line to extract from the line tube yet.
Novel thread control device provided by the invention, for example thread control device 16, are convenient to very much the manual operation suture.When the operator uses Sewing machines, can be stretched in the anchor clamps that spring wire 24 and guide plate 25 provide by the guiding suture and with its appropriateness, suture is easy to just can pass thread control device.The resistance of the appropriate elastic force of spring wire 24 and line brush 27 appropriateness that provide makes these elements be easy to very much commensurate structure and accepts suture.
Another embodiment of the present invention is, thread control device or system can comprise two blocks of opposed plates, and suture passes between two plates, and they cooperatively interact suture is applied flexible pressure.
Embodiment as shown in Figure 6 compares with the embodiment of Fig. 1-5, adopts latch plate 124 to replace spring wire 124, adopts flute profile guide 127 to replace line brush 27.Guide plate 125 shown in Figure 6 is similar with the guide plate 25 shown in Fig. 1-5.
Similar with spring wire 24, latch plate 124 also is that the screw 33 by two or more belt washers 34 is fixed on the guide plate 125.
As required, guide plate 125 comprises the flat board of relative robust construction, with support spring plate 124 in the normal use of Sewing machines.As shown in the figure, guide plate 125 is elongation types, in vertical direction, extends to the motion path of eedle 9 at thread take-up tension lever 17 along suture 11.Can see from illustrated embodiment that simultaneously guide plate 125 extends with support wire device 127 and other useful parts downwards.
As shown in the figure, latch plate 124 has a main part 42 and a protuberance 44, and the latter overlays on the outward flange 46 of guide plate 125 to operator's extension previous dynasty.Protuberance 44 connects main part 42 at fold or crease 48 places, selectively, can leave guide plate 125 highlightedly along vertical axis transverse curvature or scrolling gently.Manually put on the pressure of protuberance 44, elasticity guide plate 124 is prized like a cork from guide plate 125, in carrying line process, can enter between latch plate 124 and the guide plate 125 to allow suture 11.If desired, crease 48 can be designed to small carinate, to cooperate to the downward-sloping guide plate 125 of sewing machine head 3.In this structure, crease 48 can be used as guide member or limited part, helps to keep the lateral position of suture 11.
In Sewing machines work process, 10 one-tenth timing relationships of thread take-up tension lever 17 and rotary hook move up and down.When thread take-up tension lever 17 was in its upper position, extended on the profile 26 of guide plate 125 upsides its extreme higher position in the suture 11 On-line Control devices 16.When thread take-up tension lever 17 began to descend, suture 11 remained on the top and profile 26 of guide plate 125 temporarily.When thread take-up tension lever 17 descends, the structure of profile 26 is auxiliary suture 11 is remained on the thread control device 16 or in, prevent the suture overrelaxation.In case if suture 11 should be deviate from thread control device 16, when thread take-up tension lever 17 upward strokes, the light spring structure of thread control device plate 124 and protuberance 44 thereof can make suture 11 once more easily by between plate 124 and 125.
The disclosure of the U.S. Patent application No.11/564089 of the U.S. Patent application No.11/345212 of application on February 1st, 2006 and application on November 28th, 2006 is hereby incorporated by.
Above detailed description can basis and is understood in conjunction with the narration of background technology and summary of the invention part.This is wherein to partly or entirely the setting forth of preferred forms of the present invention, and modifiable, the optional embodiment then, useful of the present invention is advised and set forth, and these modes it will be apparent to those skilled in the art that.
By the embodiments of the invention that disclose above, can expect that many various improvement are conspicuous for those of ordinary skill in the related art, perhaps, also may become apparent along with the development of prior art.Of this sort improvement can be predicted within the protection domain or aim that will fall into the present invention or this specification invention disclosed.
Claims (18)
1, a kind of Sewing machines comprises:
A) eedle, be mounted for towards with move reciprocatingly away from garment piece;
B) reciprocal take-up device is used for control to eedle and garment piece supply suture; With
C) thread control device of band line brush, it can engage, locate and apply tension force to suture when suture is mobile between take-up device and eedle between take-up device and eedle.
2, Sewing machines as claimed in claim 1, it is characterized in that, described thread control device comprises guide plate, this guide plate has the suture engaged surface, extend along the suture direction of motion between take-up device and eedle on this surface, wherein in the Sewing machines operating process, this suture can pass this suture engaged surface.
3, Sewing machines as claimed in claim 1 is characterized in that, described thread control device comprises opposed plate and spring wire, and the two cooperatively interacts, and when Sewing machines moves, when suture moves suture is applied spring pressure between two plates.
4, Sewing machines as claimed in claim 3 is characterized in that, described opposed plate comprises guide plate, spring wire and line brush, wherein said guide plate, spring wire and the engagement of line brush, eedle pass arrive extreme lower position with the take-up device before control suture stream.
5, Sewing machines as claimed in claim 3 is characterized in that, the track with near linear when described suture passes thread control device moves.
6, Sewing machines as claimed in claim 4 is characterized in that, spring wire and line brush can apply slight resistance to suture.
7, Sewing machines as claimed in claim 4 is characterized in that, the resistance that spring wire and line brush apply suture is enough to suppress to the excessive suture of eedle feeding, and is simultaneously also small in the accessible retraction suture of eedle that is enough to remove along with returning.
8, Sewing machines as claimed in claim 4 is characterized in that, latch plate is that spring steel wire between about 0.2mm to 0.4mm constitutes by diameter.
9, Sewing machines as claimed in claim 4 is characterized in that, the outboard wheel that guide plate has is thick can be supported suture in thread take-up tension lever decline process.
10, Sewing machines as claimed in claim 4 is characterized in that, in take-up device decline process, guide plate can be caught the suture deviate from from the take-up device.
11, Sewing machines as claimed in claim 10 is characterized in that, described guide plate has the line of catching device structure, and this is caught line device structure and comprises that the quilt that is positioned at below the spring wire is to slit that the outstanding flank in front upper place limits.
12, Sewing machines as claimed in claim 10 is characterized in that, comprises a thread guide, is oriented to be convenient to catch the line motion.
13, Sewing machines as claimed in claim 4 is characterized in that, is a kind of two-wire lock stitch sewing machine, provides the second line by the reciprocal shuttle that is positioned at when sewing workbench below of moving past of fabric to eedle.
14, Sewing machines as claimed in claim 13 is characterized in that, is applicable to family expenses, and directed the use is roughly vertically motion of eedle.
15, Sewing machines as claimed in claim 13 is characterized in that, comprises the bracing cable device that is positioned at the take-up device upstream.
16, Sewing machines as claimed in claim 15 is characterized in that, the bracing cable device comprises a pair of tension pulley that does relative motion.
17, Sewing machines as claimed in claim 1 is characterized in that, is by the stitching decision that will form to the demand of suture, rather than by the backspring decision of take-up device or take-up device.
18, Sewing machines as claimed in claim 1 is characterized in that, thread control device was controlled the tension force of suture before eedle penetrates fabric, and control take-up device arrives the opportunity of extreme lower position.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US34521206A | 2006-02-01 | 2006-02-01 | |
| US11/345212 | 2006-02-01 | ||
| US11/564089 | 2006-11-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101012602A true CN101012602A (en) | 2007-08-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100860489A Pending CN101012602A (en) | 2006-02-01 | 2007-02-01 | Thread control device for a sewing machine |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP1816248A1 (en) |
| CN (1) | CN101012602A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112323271A (en) * | 2020-11-13 | 2021-02-05 | 杰克缝纫机股份有限公司 | Thread stabilizing device of sewing machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102953237A (en) * | 2012-08-15 | 2013-03-06 | 宁波宇杰电子科技有限公司 | Novel industrial sewing bobbin winder shuttle peg column |
| US10094056B2 (en) | 2014-09-26 | 2018-10-09 | Abm International, Inc. | Automatic thread tensioning |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB185697A (en) * | 1922-01-11 | 1922-09-14 | Singer Mfg Co | Take-up |
| GB283405A (en) * | 1927-06-02 | 1928-01-12 | Singer Mfg Co | Needle-thread controller for sewing machines |
| US3587495A (en) * | 1970-02-03 | 1971-06-28 | Singer Co | Sewing machines |
| JPH0779900B2 (en) * | 1987-11-06 | 1995-08-30 | 蛇の目ミシン工業株式会社 | Thread tightening compensation sewing machine based on needle position |
| JP2775904B2 (en) * | 1989-10-13 | 1998-07-16 | ブラザー工業株式会社 | Automatic threading sewing machine |
| JPH0461889A (en) * | 1990-06-29 | 1992-02-27 | Janome Sewing Mach Co Ltd | Automated thread guard sewing machine |
| US5881663A (en) * | 1995-10-09 | 1999-03-16 | Juki Corporation | Method of tying a knot in chain stitching |
| DE19617945C1 (en) * | 1996-05-04 | 1997-09-11 | Union Special Gmbh | Thread control for a chain stitch sewing machine |
| JP3766297B2 (en) * | 2001-08-02 | 2006-04-12 | ペガサスミシン製造株式会社 | Multi-needle double chain stitch sewing machine needle thread controller |
-
2006
- 2006-05-24 EP EP06010628A patent/EP1816248A1/en not_active Withdrawn
-
2007
- 2007-02-01 CN CNA2007100860489A patent/CN101012602A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112323271A (en) * | 2020-11-13 | 2021-02-05 | 杰克缝纫机股份有限公司 | Thread stabilizing device of sewing machine |
| CN112323271B (en) * | 2020-11-13 | 2021-11-02 | 杰克缝纫机股份有限公司 | Thread stabilizing device of sewing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1816248A1 (en) | 2007-08-08 |
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Application publication date: 20070808 |