CN1179487A - Device of sewing machine for preventing non-uniformly feeding material to be sewed - Google Patents
Device of sewing machine for preventing non-uniformly feeding material to be sewed Download PDFInfo
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- CN1179487A CN1179487A CN 97119531 CN97119531A CN1179487A CN 1179487 A CN1179487 A CN 1179487A CN 97119531 CN97119531 CN 97119531 CN 97119531 A CN97119531 A CN 97119531A CN 1179487 A CN1179487 A CN 1179487A
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- sewn object
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Abstract
The present invention relates to a sewing deviation preventive apparatus of cloth sewn by sewing machine comprising a throat plate forming a needle hole through which a sewing needle penetrates, a feed dog moving in and out on the throat plate, and a cloth presser formed to be located above the needle hole, having a presser foot for pressing the cloth when sewing disposed at the leading end, wherein the abutting portion of the presser foot contacting with the cloth is coupled and supported by an elastic member 11, whereby the dislocation of the presser foot is allowed by deformation of the elastic member, the cloth can be always gripped stably corresponding flexibly to the thickness of the cloth, and the cloth can be fed stably and securely without causing corrugation, lashing, etc.
Description
The present invention relates to the anti-locking apparatus of sewn object uneven material feeding of the Sewing machines of sewing fabric.
Always,, taked various methodologies and measure, but owing to factors such as the material of institute's tailoring cloth and braid method produce various shortcoming, still untappedly gone out desirable method or measure in order to prevent the sewn object generation uneven material feeding of Sewing machines.
Especially when the collar of making thick sewn object etc., the feeding of sewn object is unstable sometimes, and this has hindered the raising of quality.If the mechanism that distance between change needle plate and presser feet is set in view of this problem is to adapt to the thickness of cloth, then structure complicates and the cost rising, can not essence deal with problems.
In addition, developed shape-memory material in recent years, and begun grey cloth as Y shirt etc.This kind material is if use conventional methods, promptly after making by hand operation carry out shaping, with the flatiron flatiron, then can not correct uneven material feeding.Therefore wish to occur the anti-locking apparatus of sewn object uneven material feeding of more effective Sewing machines.
In view of the foregoing, the objective of the invention is to, a kind of anti-locking apparatus of sewn object uneven material feeding of Sewing machines is provided, this device constitutes with simple structure, can not be subjected to the kind of cloth material or thickness and the influence of braid method, can not be subjected to the influence of cloth extension etc. yet, can prevent uneven material feeding reliably, can work effectively yet new material newly developed.
Solution as above-mentioned problem, the sewn object uneven material feeding of technical solution of the present invention 1 described Sewing machines is prevented locking apparatus, comprise: be formed with and allow the needle plate of the pin hole that Sewing needles passes, at the place ahead of the sewn object direction of advance of described pin hole and the feeding tooth that described needle plate is haunted in both sides, be configured in the top of described pin hole, its top ends is provided with the presser feet of the pressure foot of pushing sewn object when making, it is characterized in that, between presser feet body by being configured in presser feet and the pressure foot or the elastic portion on the pressure foot, connect supporting pressure foot with the abutting part sewn object butt.
This uneven material feeding is prevented locking apparatus, when the abutting part downside with feeding tooth and pressure foot sandwiches sewn object because elastic portion deforms, thus abutting part be subjected to displacement, can be at the extensively variation of scope endoadaptation sewn object thickness, stably clamping sewn object.Therefore, though make operation midway the thickness of sewn object change, also can sandwich to all-the-time stable this sewn object, and with the cooperation of feeding tooth, continue forward direction halfway without a break and transport sewn object.
Pressure foot pushes sewn object like patting when making sewn object, it is sent into the place ahead of feed direction.At this moment, because the distortion of elastic portion is pressed against on the sewn object the whole downside of abutting part, so sewn object can not play wave or shrink etc., can stablize and feeding reliably.
In addition, as elastic portion, can use the elastomeric element of rubber etc. and spring etc.
Solution as above-mentioned problem, the sewn object uneven material feeding of technical solution of the present invention 2 described Sewing machiness is prevented locking apparatus, it is characterized in that, the pressure foot of presser feet is a spring body of metallic plate being made the U font, the tabs of U word one side is connected with the presser feet body of presser feet, the tabs of opposite side disposes below separating with an above-mentioned side tabs, with the needle plate upper side concurrently as abutting part, and the connecting portion that connects between two tabs is worked as elastic portion.
The anti-locking apparatus of this uneven material feeding adapts to the variation of sewn object thickness by the change of size of separation between two tabs of pressure foot.
In addition, for example if the size that the opposite side tabs that makes this pressure foot stretches out from connecting portion big than a side tabs then can make presser feet extensively work in the scope by the pressing force of compress.And, if the shape (for example offer sewing machine needle intert the slit of usefulness) of adjusting the opposite side tabs to avoid eedle, then can make the application point of pressing force of a side tabs near directly over the pin hole, therefore can make the clamping of cloth of pin hole periphery reliable especially.
In addition, the U font of so-called pressure foot comprises the similar different shape of コ font etc.
Hereinafter with reference to description of drawings example of the present invention.
In the accompanying drawing:
Fig. 1 is that the sewn object uneven material feeding that comprises Sewing machines of the present invention is prevented the explanation front view of the Sewing machines part of locking apparatus one example.
Fig. 2 is that the sewn object uneven material feeding that comprises Sewing machines of the present invention is prevented the explanation vertical view of the Sewing machines part of locking apparatus one example.
Fig. 3 is the vertical view of the anti-employed needle plate of locking apparatus one example of sewn object uneven material feeding of Sewing machines of the present invention.
Fig. 4 is the cutaway view along the S-S line of needle plate shown in Figure 3.
Fig. 5 is the figure of the anti-employed feeding tooth of locking apparatus one example of sewn object uneven material feeding of Sewing machines of the present invention, and wherein (a) is vertical view, (b) is side view.
Fig. 6 is the figure of traditional feeding tooth, and wherein (a) is vertical view, (b) is side view.
Fig. 7 is that the sewn object uneven material feeding of explanation Sewing machines of the present invention is prevented the figure of the prevention effect usefulness of locking apparatus, is the amplification view at the S-S line place among Fig. 2.
Fig. 8 equally also is the amplification view of explanation prevention effect usefulness.
Fig. 9 equally also is the amplification view of explanation prevention effect usefulness.
Figure 10 equally also is the amplification view of explanation prevention effect usefulness.
Fig. 1-Fig. 5 shows example of the present invention.In Fig. 1 and Fig. 2, symbol 1 is the part of Sewing machines, has sewing arm 2 and platen 3.Bottom at sewing arm 2 is provided with eedle 4, on platen 3, is provided with needle plate 5 horizontally, and needle plate 5 is provided with the pin hole O that eedle 4 passes usefulness.Eedle 4 is vertical with needle plate 5, and can be reciprocating along lifting center line X-X.
As shown in Figure 3 and Figure 4, on needle plate 5, and, be formed with that can haunt the feeding tooth of introducing in the back, the outside than inboard long, three gathering sill 5a, 5b, 5c that central portion is short in the place ahead and the both sides of the sewn object direction of advance (direction of arrow A among the figure) of pin hole O.In addition, at the rear of the above-mentioned direction of advance of needle plate 5, be formed with the upper side 5e protuberance 5d of 1mm for example that protrudes needle plate 5.The length of protuberance 5d on the arrow A direction is about 6mm, and its section shape is that above-mentioned direction of advance front portion upwards erects, and rearward gently descends from this leading section.
As shown in Figure 1, above needle plate 5, be provided with the presser feet 6 with lifting center line X-X lifting abreast,, be provided with pressure foot 7 on the top of presser feet 6.Pressure foot 7 is spring bodies of metallic plate being made the U font, the tabs 8 of U word one side is by the presser feet body 9 and the trunnion axis 6a of presser feet 6, propped up by pivot vertically rotatingly, the tabs 10 of opposite side leave an above-mentioned side tabs 8 below, with the parallel configuration of needle plate upper side 5e.The connecting portion 11 that connects between two tabs 8,10 is the parts that play the elastic portion effect that change as the interval that allows two tabs 8,10, when the cloth P, the Q that between pressure foot 7 and needle plate 5, sandwich as sewn object, opposite side tabs 10 is applied downward active force.This connecting portion 11 is towards the place ahead of cloth P, Q feed direction.
6b is a spring among the figure, is positioned at cloth P, Q feed direction the place ahead of trunnion axis 6a, and is inserted between presser feet body 9 and the pressure foot 7 by folder, and connecting portion 11 1 sides of pressure foot 7 are applied downwards active force.
Again, opposite side tabs 10 works as the abutting part with cloth P, Q butt.
Below needle plate 5, be provided with shuttle 12, feeding rod 13, up-down adjustment arm 14 and retainer 15.In shuttle 12 inside, be provided with not shown shuttle free to rotately.In addition, feeding rod 13 and up-down adjustment arm 14 can be distinguished freely rotation to the left and right, rotate up and down.One end of retainer 15 is connected with feeding rod 13, and the other end of retainer 15 is connected with up-down adjustment arm 14.On retainer 15, screw is fixed with feeding tooth 16.
As shown in Figure 5, on feeding tooth 16, be provided with different three tooth bar 16a, 16b, the 16c of length similarly with the gathering sill 5a, the 5b that are located at needle plate 5,5c with the state that protrudes from upper side.Article three, among the tooth bar, the tooth bar 16b of central authorities is set at than other two high 0.2mm of tooth bar 16a, 16c.
During with stitching sewing machine cloth P, the Q of said structure, as shown in Figure 7, cloth P, Q are placed on the needle plate 5, pressure foot 7 is descended, be arranged to cloth P, Q are suppressed at the upper side 5e of needle plate 5 and the state between the pressure foot 7.At this moment, the state that cloth P, Q are almost parallel in the upper side clamping of the downside 7b of pressure foot 7 and needle plate 5.
In addition, Sewing needles 4 is in the state that begins to descend from the lifting position of lifting travel.Screw is fixed in the position under the upper side 5e that feeding teeth 16 above the retainer 15 are positioned at needle plate 5, and the lifting center line X-X of eedle 4 relatively, is positioned at beginning to position that the direction opposite with arrow A laterally moves.
Then, eedle 4 descends along lifting center line X-X, passes after cloth P, the Q, rises and makes.Therebetween, the lifting center line X-X of feeding tooth 16 relative eedles 4 laterally moves to the direction opposite with arrow A.Then as shown in Figure 8, the tooth bar 16b of feeding tooth 16 is positioned at the position of tabs 8 belows.
Thereafter, as shown in Figure 9, eedle 4 is after cloth P, Q extract, and feeding tooth 16 rises, and tooth bar 16a, 16b, 16c become the state that gathering sill 5a, 5b, 5c from the needle plate 5 is exposed to the upper side 5e of needle plate 5.At this moment, pressure foot 7 is upwards lifted from downside 7b through cloth P, Q by tooth bar 16a, 16b, 16c, and the parallel upward mobile length of tooth bar 16b is from the upper side 5e of needle plate 5 length protruding upward.
At this moment, pressure foot 7 is subjected to the pushing that feeding tooth 16 makes progress, but because the tooth bar 16b of central authorities is set at the high 0.2mm of tooth bar 16a, 16c than both sides, so mainly be subjected to the power of tooth bar 16b.Therefore, main downside 7b and tooth bar 16b clamping by pressure foot 7.
Because of the effect of connecting portion 11, allow the interval change of two tabs 8,10 again, so, can prevent from the chucking power of cloth P, Q to be increased unusually because of the rising of feeding tooth 16, can not damage cloth P, Q.
In addition as shown in figure 10, when eedle 4 was in the decline half-way, feeding tooth 16 moved to the arrow A direction with the state of the upper side 5e that protrudes from needle plate 5.Meanwhile, because cloth P, Q are mainly suppressed by the downside 7b and the tooth bar 16b of pressure foot 7, so also be pulled to the arrow A direction, the distance that is transported is the displacement of feeding tooth 16.
At this, because pressure foot 7 is by trunnion axis 6a and free to rotate, and apply active force, so because tooth bar 16b moves to the arrow A direction, it is the power of the center direction of rotating upward that top 7a promptly is subjected to trunnion axis 6a by spring 6b.Its result, pressure foot 7 becomes the state that its rear end 7c tilts a little downwards from the state of its downside 7b and needle plate upper side 5e almost parallel.Therefore, cloth P, Q are subjected to the pushing of protuberance 5d on rear end 7c and the needle plate upper side 5e.
At this moment, because cloth P, Q are subjected to the strongest pushing of tooth bar 16b of feeding tooth 16, thus horizontal when mobile when feeding tooth 16, be subjected to the most strong pushing and drawing in the dead ahead of pin hole.And, because cloth P, Q are subjected to the clamping of the downside 7b of protuberance 5d on the upper side 5e of needle plate 5 and pressure foot 7 in the dead astern of pin hole O, so cloth P, Q be when the arrow A direction moves, the slippage of cloth can not take place between these 2 or shrink.And, when making chucking power very strong because of factors such as cloth P, Q are too thick, elasticity between two tabs 8,10 makes the whole downside 7b of opposite side tabs 10 by being pressed on cloth P, the Q, so can be reliably and stably transport cloth P, Q, and can be because of clamping does not make cloth wrinkling, so can the such unfavorable condition of uneven material feeding not take place because of this gauffer yet.In addition, though pressure foot 7 couples of cloth P, Q like patting, push because suppressed the generation of vibration, so also do not worry making the feeding instability of cloth P, Q because of vibration.And noise also reduces.
As mentioned above, the anti-locking apparatus of the sewn object uneven material feeding of this Sewing machines is horizontal when mobile at feeding tooth 16, can carry out the strongest pushing and drawing reliably to cloth P, Q in the dead ahead of pin hole O.And because in the dead astern of pin hole O, cloth P, Q are sandwiched between the whole downside 7b of protuberance 5d and pressure foot 7 on the needle plate 5 upper side 5e, thus between these 2, cloth P, Q can be subjected to more haling under the situation of drawing mobile reliably.Therefore, can slippage does not take place, shrink and lumpy state under, Sewing needles 4 descends and makes.
In addition, the anti-locking apparatus of the sewn object uneven material feeding of this Sewing machines is for the thickness of cloth P, Q, two tabs 8,10 changes at interval that can be by pressure foot 7 endoadaptation on a large scale it, so unnecessary the setting in addition adjusted presser feet 6 and feeding tooth 16 special mechanism at interval.And, even the thickness of cloth P, Q changes in the process of making, similarly also can change and adapt to it by the interval of two tabs 8,10, can make operation continuously.
In addition, in this example, opposite side tabs 10 is by slit (not shown), even also can avoid Sewing needles 4 directly over pin hole O, so compare with traditional structure, can make trunnion axis 6a more near the axis of pin hole O, therefore, especially on the next door of pin hole O, the pressing force that acts on pressure foot 7 can work effectively, push cloth reliably, make precision so can further improve.In addition, act on opposite side tabs 10 on the whole with can making the pressing force Without prejudice, can push cloth P, Q equably.
Pressure foot 7 is not limited to the spring body of U font in addition, also can adopt the structure of metallic plate in the elastic portion bottom stickup that highly elastic materials such as rubber constitute etc.
In addition, elastic portion also can be that folder is inserted in the elastomer between presser feet body 9 and the pressure foot 7 except the connecting portion 11 shown in the above-mentioned example.
The tooth bar 16b of feeding tooth 16 is set at than tooth bar 16a and the high 0.2mm of 16c, but can be arbitrary height according to kind and the thickness setting of cloth P, Q also.
In addition, the protuberance 5d that is formed at needle plate 5 upper side 5e equally also can be set at size arbitrarily.
And for example shown in Figure 6, always 3 tooth bar Ga, Gb, the Gc of the feeding tooth G of Shi Yonging are arranged to identical height, but also can carry out local flow improvement to tooth bar Ga, the Gc of this feeding tooth G, make the feeding tooth of setting tooth bar 16b higher 16 as shown in Figure 5.
In addition, in above-mentioned example, be as the anti-locking apparatus of the sewn object uneven material feeding in the Sewing machines of 1 Sewing needles 4, but also can be used in the spininess Sewing machines, in addition, when being used in the diversified Sewing machines of the overlock machine etc. of chain type sewing usefulness, also can obtain same action effect.
If adopt the anti-locking apparatus of the sewn object uneven material feeding of sewing machine claimed in claim 1, because connect the abutting part of supporting pressure foot with elastic portion, allow the displacement of pressure foot by the distortion of elastic portion, so, can obtain following good result:
(1) utilize abutting part and the feeding tooth of pressure foot, can be at wide scope endoadaptation sewn object thick Degree change and all-the-time stable sandwich sewn object, feeding is reliable.
(2) in making the operation process, even the thickness of sewn object changes, also can be with suitable The chucking power clamping.
(3) press by the whole downside that makes the pressure foot abutting part and clamp sewn object, can make and be stitched Thing processed is stable and reliably feeding in the situation that heaving of the sea does not take place and shrink etc.
(4) impact during the sewn object clamping is absorbed by elastic portion, has suppressed the generation of vibration, therefore, The feeding of sewn object and make further reliably and stable, noise also reduces.
(5) owing to the reason of above-mentioned (1) to (3), the feeding of sewn object and its thickness are irrespectively All-the-time stable and carrying out reliably can stably be made operation, has improved the product of the goods that obtain Matter.
If adopt the anti-locking apparatus of the sewn object uneven material feeding of sewing machine claimed in claim 2, because with gold The genus plate is made the spring body of U font as pressure foot, and structure is simple, so can receive that manufacturing is easy, easy Reduce cost and realize the good result of miniaturization.
Claims (2)
1. the sewn object uneven material feeding of a Sewing machines is prevented locking apparatus, comprising:
Be formed with and can allow the needle plate (5) of the pin hole (0) that Sewing needles (4) passes,
At the place ahead of sewn object (P, the Q) direction of advance of described pin hole and the feeding tooth (16) that described needle plate is haunted in both sides,
Top, its top ends that is configured in described pin hole is provided with the presser feet (6) of the pressure foot (7) of pushing sewn object when making, it is characterized in that,
Between presser feet body (9) by being configured in presser feet and the pressure foot or the elastic portion (11) on the pressure foot, connect supporting pressure foot with the abutting part sewn object butt (10).
2. the sewn object uneven material feeding of Sewing machines according to claim 1 is prevented locking apparatus, it is characterized in that, the pressure foot of described presser feet is a spring body of metallic plate being made the U font, the tabs (8) of U word one side is connected with the presser feet body of presser feet, the tabs of opposite side (10) disposes below separating with an above-mentioned side tabs, with the needle plate upper side concurrently as abutting part, and the connecting portion (11) that connects between two tabs is worked as elastic portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97119531 CN1179487A (en) | 1996-09-27 | 1997-09-16 | Device of sewing machine for preventing non-uniformly feeding material to be sewed |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP257196/96 | 1996-09-27 | ||
| CN 97119531 CN1179487A (en) | 1996-09-27 | 1997-09-16 | Device of sewing machine for preventing non-uniformly feeding material to be sewed |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1179487A true CN1179487A (en) | 1998-04-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97119531 Pending CN1179487A (en) | 1996-09-27 | 1997-09-16 | Device of sewing machine for preventing non-uniformly feeding material to be sewed |
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| Country | Link |
|---|---|
| CN (1) | CN1179487A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101144227B (en) * | 2007-07-13 | 2012-02-15 | 福州永鑫塑料包装用品有限公司 | Feeding mechanism for overlock machine |
| CN106637706A (en) * | 2015-10-30 | 2017-05-10 | 蛇目缝衣机工业株式会社 | Feed dog adjustment device and sewing machine including same |
-
1997
- 1997-09-16 CN CN 97119531 patent/CN1179487A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101144227B (en) * | 2007-07-13 | 2012-02-15 | 福州永鑫塑料包装用品有限公司 | Feeding mechanism for overlock machine |
| CN106637706A (en) * | 2015-10-30 | 2017-05-10 | 蛇目缝衣机工业株式会社 | Feed dog adjustment device and sewing machine including same |
| CN106637706B (en) * | 2015-10-30 | 2020-10-27 | 蛇目缝衣机工业株式会社 | Feed dog adjusting device and sewing machine with same |
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