CN101377036B - Feed gear inclination adjusting device of sewing machine - Google Patents

Feed gear inclination adjusting device of sewing machine Download PDF

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Publication number
CN101377036B
CN101377036B CN 200810147549 CN200810147549A CN101377036B CN 101377036 B CN101377036 B CN 101377036B CN 200810147549 CN200810147549 CN 200810147549 CN 200810147549 A CN200810147549 A CN 200810147549A CN 101377036 B CN101377036 B CN 101377036B
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aforementioned
screw
axle
fixed
swing arm
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CN 200810147549
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CN101377036A (en
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河本修
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Juki Corp
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Juki Corp
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Abstract

The invention provides a sewing machine feeding tooth gradient regulating device capable of regulating the gradient of each feeding tooth easily even a pair of limit stops are supported respectively on moving shaft. The device comprises: a first cubic limit stop capable of embedding with the eccentric part of the lower shaft in freely rotatable way; a second cubic limit stop capable of embedding with the eccentric part of the up-and-down oscillating shaft; a main oscillating lever with a main feeding tooth and a differential oscillating lever with a differential feeding tooth supported by the two cubic limit stops; an up-and-down lever arm fixed on the up-and-down oscillating shaft connected with the eccentric cam of the lower shaft; a regulating block with a screw holding unit fixed on the up-and-down oscillating shaft; and a regulating screw which is screwed into the screw supporting unit of the up-and-down lever arm and is fixed on the screw holding unit of the regulating block. The screw for fixing the up-and-down lever arm is unscrewed, then the regulating screw can be adjusted back and forth; the up-and-down oscillating shaft is rotated, the height of the second limit stop is changed, thus, the tooth gradient is changed.

Description

The feed gear inclination adjusting device of Sewing machines
Technical field
The present invention relates to a kind of feed gear inclination adjusting device of Sewing machines, it can easily adjust the heeling condition of feeding tooth.
Background technology
For example such as patent documentation 1 record, main feeding tooth and differential feed tooth utilize the rotation of lower shaft, carry out respectively different elliptic motions, thereby make the sewn object feeding with the different amount of feeding.
And, support the main swing arm of main feeding tooth and the differential swing arm of support differential feed tooth, be supported on respectively on the 1 square shaped block, but in this 1 square shaped block one is supported on the fixed axis of fixed configurations.
In addition, as this Sewing machines without the space of cylindric base portion in, the structure that is supported on the fixed axis from a square block that above-mentioned patent documentation 1 is put down in writing is different, becomes the structure on the axle that two square blocks are supported on respectively motion.
Patent documentation 1: 2003-No. 220288 communiques of JP
Summary of the invention
In above-mentioned two square blocks are supported on respectively Sewing machines on the kinematic axis, be configured in the inside of Sewing machines owing to the mechanism that motion is sent to axle, therefore in order to adjust the heeling condition of each feeding tooth, must after the outer cover of the Sewing machines of dismantling and sealing, adjust, the operation complicated is difficult to the small skew state of feeding tooth is adjusted simultaneously.
Especially, in the situation of the Sewing machines with thread cutting device, even thread cutting device also must decompose.
Therefore, the object of the invention is to, 1 square shaped block is supported on respectively in the structure on the axle of motion, can carry out the adjustment operation of the heeling condition of each feeding tooth simple and reliablely.
In order to realize aforementioned purpose, the feeding tooth heeling condition regulator of technical scheme 1 described Sewing machines of the present invention is characterized in that having: lower shaft, and it is driven to same direction rotation; The 1st square block, it is free to rotately chimeric with the eccentric part that is formed on the aforementioned lower shaft; Eccentric cam, it is fixed on the aforementioned lower shaft; The bottom and top feed bar, itself and aforementioned eccentric cam are chimeric, utilize the rotation of this eccentric cam to carry out reciprocally swinging; Swing up and down axle, it is configured to have the axis parallel with aforementioned lower shaft; The 2nd square block, it is free to rotately with to be formed at the aforementioned eccentric part that swings up and down on the axle chimeric; Main swing arm and differential swing arm, it is supported on respectively on aforementioned two square blocks; Main feeding tooth, it is fixed on the aforementioned main swing arm; The differential feed tooth, it is fixed on the aforementioned differential swing arm; Lever up and down, it utilizes screw to be fixed on aforementioned swinging up and down on the axle, links with aforementioned eccentric cam; Adjustment block, it is fixed in aforementioned swinging up and down on the axle, has the screw maintaining part; And adjustment screw, its screw-in is formed in the screw support portion on the aforementioned up and down lever, be fixed in simultaneously in the screw maintaining part of aforementioned adjustment block, with aforementioned up and down lever fixedly the screw of usefulness unscrew, then make aforementioned adjustment screw advance and retreat, thereby the aforementioned axle that swings up and down is rotated, make thus the height change of aforementioned the 2nd square block, thereby the heeling condition of aforementioned two feeding teeth is changed.
In addition, the feeding tooth heeling condition regulator of technical scheme 2 described Sewing machiness, it is characterized in that, also has sewing machine base, aforementioned up and down lever fixedly screw and the aforementioned adjustment screw of usefulness are accommodated by section within it, aforementioned sewing machine base, with the aforementioned up and down lever position that fixedly screw of usefulness is relative, reach on the position relative with aforementioned adjustment screw, form respectively handle hole.
The effect of invention
According to aforesaid the present invention, since up and down lever fixedly the screw of usefulness unscrew, then make and adjust the screw advance and retreat, swing up and down the axle rotation thereby make, make thus the height change of the 2nd square block, thereby the heeling condition of two feeding teeth is changed, therefore, the heeling condition of feeding tooth is changed, thereby can easily adjust the heeling condition of feeding tooth.
In addition, as long as respectively sewing machine base section, with the position of the sewing machine base section that the lever fixing screw is relative up and down, and form handle hole on the position relative with adjusting screw, and just can be with screwdriver from each handle hole insertion, thus the heeling condition of feeding tooth easily adjusted.
Description of drawings
Fig. 1 is the oblique view of the embodiment of the expression feed gear inclination adjusting device of observing the Sewing machines that the present invention relates to from oblique upper.
Fig. 2 is the oblique view of observing from the oblique right front of Fig. 1.
Fig. 3 is the oblique view of observing from the oblique left front of Fig. 1.
Fig. 4 be Fig. 1 want section's amplification oblique drawing.
Fig. 5 is the oblique view of observing from the back of Fig. 4.
Fig. 6 is the oblique view that omits the part of Fig. 3.
Fig. 7 is the oblique view that changes the angle of Fig. 3.
Fig. 8 is the oblique view that expression is contained in the feed gear inclination adjusting device of the Sewing machines of Fig. 1 the state in the sewing machine base section.
The specific embodiment
In Fig. 1, in not shown sewing machine base section, be provided with lower shaft 1, the main shaft interlock of itself and Sewing machines and being rotated is fixed with eccentric cam 2 at the leading section of this lower shaft 1, and it has the axis with respect to lower shaft 1 off-centre.In addition, in the periphery of this eccentric cam 2, the chimeric circular base portion 3A that forms the shaft-like main feed bar 3 of crank free to rotate.
In addition, approach with aforementioned lower shaft 1 and the main feed shaft 4 parallel with lower shaft 1 is set, on this main feed shaft 4, as shown in Figure 2, setting-in is to the main feeding lever 5 of radiation direction extension.In addition, between the leading section of the leading section of aforementioned main feed bar 3 and aforementioned main feeding lever 5, pivotally connected main feeding connecting rod 6.
Therefore, if 1 rotation of aforementioned lower shaft then utilizes the rotation of this lower shaft 1, aforementioned eccentric cam 2 revolves round the sun centered by the axis of lower shaft 1, utilizes the revolution of this eccentric cam 2, aforementioned main feed bar 3 reciprocating motions.Utilize the reciprocating motion of this main feed bar 3, from the reciprocating motion on the direction different with main feed bar 3 of the pivotally connected aforementioned main feeding connecting rod 6 of this main feed bar 3.Like this, the aforementioned main feeding lever 5 reciprocating rotation predetermined angulars pivotally connected with this main feeding connecting rod 6 utilize the reciprocating rotation of this main feeding lever 5, main feed shaft 4 reciprocating rotation predetermined angulars.
In Fig. 1, at the side of aforementioned main feed shaft 4 configuration differential feed axle 7, it has the axis parallel with the axis of this main feed shaft 4.On the other hand, on aforementioned main feed shaft 4, as shown in Figure 3, the outstanding differential feed activation lever 8 that arranges, itself and this main feed shaft 4 rotates integratedly, between this differential feed activation lever 8 and aforementioned differential feed axle 7, differential feed connecting rod 9 and differential feed is installed regulates wrist 10.Therefore, the reciprocating rotation of aforementioned main feed shaft 4 is regulated wrist 10 via differential feed activation lever 8, differential feed connecting rod 9 and differential feed and is passed to differential feed axle 7, and this differential feed axle 7 also carries out reciprocating rotation.
In Fig. 1, configuration swings up and down axle 11 above aforementioned differential feed axle 7, and it has the axis parallel with the axis of this differential feed axle 7.On the other hand, at peripheries aforementioned lower shaft 1 and aforementioned eccentric cams 2 aforementioned main feed bar 3 adjacent regions, the free to rotately chimeric circular base portion 12A that forms the shaft-like bottom and top feed bar 12 of crank.
Swing up and down on the axle 11 aforementioned, such as Fig. 4 and shown in Figure 5, utilize screw 13 fixing up and down levers 14.Lever 14 has screw supporting board 14B up and down, this screw supporting board 14B extends upward from utilizing aforementioned screw 13 to be fixed in the aforementioned base portion 14A that swings up and down on the axle 11, run through that at this screw supporting board 14B internal thread part 14C being set, it runs through screw supporting board 14B.
In the side of aforementioned screw supporting board 14B, form the annulus 14D with base portion 14A and screw supporting board 14B one, this annulus 14D and the aforementioned periphery that swings up and down axle 11 are chimeric.On this annulus 14D, have the crank portion 14F that extends of the radiation direction outside of swinging axle 11 up and down from this annulus 14D, form crank annulus 14E, itself and aforementioned annulus 14D are chimeric with the aforementioned periphery that swings up and down axle 11 in the same manner.
And, the leading section of aforementioned bottom and top feed bar 12 and the leading section of aforementioned crank portion 14F utilize not shown pin and are pivotally connected, make aforementioned bottom and top feed bar 12 to the length direction reciprocating motion by the rotation by aforementioned lower shaft 1, thereby the aforementioned axle 11 that swings up and down carry out reciprocating rotation.
On the other hand, swing up and down on the axle 11 at the aforementioned of adjacent regions of the base portion 14A that becomes aforementioned up and down lever 14, the annulus 19A of chimeric adjustment block 19, this annulus 19 utilize screw 20 to be fixed in aforementioned swinging up and down on the axle 11.In addition, on the annulus 19A of aforementioned adjustment block 19, the outstanding screw maintaining part 19B that arranges, its screw supporting board 14B with aforementioned up and down lever 14 has the interval and relative, run through that at this screw maintaining part 19B through hole 19C being set, its internal thread part 14C with aforementioned screw supporting board 14B is coaxial.
And, in the internal thread part 14C of aforementioned screw supporting board 14B, screwing in the threaded portion 22A that adjusts screw 22, the head 22B of this adjustment screw 22 is positioned at the outer surface of aforementioned screw supporting board 14B.And the leading section of the threaded portion 22A of aforementioned adjustment screw 22 passes the through hole 19C of aforementioned screw maintaining part 19B, in the both sides of aforementioned through-hole 19C, and chimeric E shape back-up ring 23,23 on the 22A of the threaded portion of aforementioned adjustment screw 22.Therefore, this threaded portion 22A utilizes two E shape back-up rings 23,23, and is restrained to the movement of axis direction in the through hole 19C of aforementioned screw maintaining part 19B.
Such as Fig. 1 and shown in Figure 6, on the axis direction of aforementioned lower shaft 1 and ends aforementioned eccentric cam 2 opposite sides are fixed with eccentric part 1A, and it has the axis with respect to the eccentric axis of lower shaft 1.On this eccentric part 1A, support the 1st square block 24 of overlooking as foursquare square shape free to rotately.
The aforementioned end that swings up and down axle 11 of position is fixed with eccentric part 11A near the eccentric part 1A that becomes aforementioned lower shaft 1, and it has the axis with respect to the eccentric axis that swings up and down axle 11.On this eccentric part 11A, on position identical with the aforementioned the 1st square block 24 on aforementioned lower shaft 1 and the aforementioned axis direction that swings up and down axle 11, support the 2nd square block 25 of overlooking as foursquare square shape free to rotately.
On aforementioned two square blocks 24,25, respectively chimeric and keep being arranged on the main swing arm 26 about 1 couple of rectangular recess 26A, 26B, and be arranged on the differential swing arm 27 about 1 couple of rectangular recess 27A, 27B, they are on the position adjacent one another are.
On aforementioned main swing arm 26, utilize screw 30 that main feeding tooth 28 is installed, in addition, on aforementioned differential swing arm 27, utilize screw 31 that differential feed tooth 29 is installed.
In the end of aforementioned main swing arm 26 sides of aforementioned main feed shaft 4, crank portion 32 upwards is installed, between the upper end and aforementioned main swing arm 26 of this crank portion 32, main feeding drive link 33 is installed.
On the other hand, in the end of aforementioned differential swing arm 27 sides of aforementioned differential feed axle 7, crank portion 34 upwards is installed, between the upper end and aforementioned differential swing arm 27 of this crank portion 34, installation differential feed drive link 35.
Therefore, be rotated by aforementioned lower shaft 1, via main feed shaft 4, crank portion 32, and main feeding drive link 33, apply reciprocating motion with the direction of the axis direction quadrature of lower shaft 1 to main swing arm 26 and main feeding tooth 28, in addition, via differential feed axle 7, crank portion 34 and differential feed drive link 35, apply reciprocating motion with the direction of the axis direction quadrature of lower shaft 1 to differential swing arm 27 and differential feed tooth 29.
The feed gear inclination adjusting device of aforementioned Sewing machines as shown in Figure 8, is disposed in the sewing machine base 40.For this reason, at aforementioned base 40 interior formation recesses 41, it is used for accommodating the feed gear inclination adjusting device of Sewing machines.
And, in order to be used for the fixing aforementioned up and down screw 13 of lever 14 from peripheral operation, to form at the aforementioned base 40 relative with this screw 13 and to be communicated with inside and outside handle hole 42.In addition, in order to screw in adjustment screw 22 the internal thread part 14C of screw supporting board 14B of aforementioned adjustment block 19 from peripheral operation, form and be communicated with inside and outside handle hole 43 adjusting the relative aforementioned base 40 of screw 22 with this.
Below, the effect of the present embodiment that is made of aforementioned structure is described.
About the action by making lower shaft 1 rotation that main feeding tooth 28 and differential feed tooth 29 are carried out in the present embodiment, because identical with existing Sewing machines, therefore the description thereof will be omitted.
In the present embodiment, in sewing machine base 40 interior formation: handle hole 42, utilize this handle hole 42, can be used for the fixing up and down screw 13 of lever 14 from peripheral operation; And handle hole 43, utilize this handle hole 43, adjustment screw 22 that can be from the internal thread part 14C of the screw-in screw supporting board 14B of peripheral operation adjustment block 19.
Therefore, the state of making of the sewn object that affirmation is made Sewing machines is driven, judgement should change in the situation of two feeding teeth 28,29 heeling condition, when the halted state of Sewing machines, insert screwdriver (not shown) and screw 13 is unscrewed the stationary state of lever 14 about removing from handle hole 42.Under this state, adjust screw 22 rotations by making, make and adjust screw 22 and advance or retreat, swing up and down axle 11 and rotate thereby make.Like this, the direction that is supported on the 2nd square block 25 on this eccentric part 11A that swings up and down axle 11 changes, thus the Level Change of this square block 25.Thus, each feeding tooth 28,29 gradient change.Therefore, under this state, as long as it is fastening with screw 13 to insert screwdrivers (not shown) from handle hole 42, makes up and down lever 14 become stationary state and get final product.
And, can utilize two feeding teeth 28,29 of the heeling condition after the adjustment, carry out making of sewn object.
In addition, the invention is not restricted to aforesaid embodiment, can carry out as required numerous variations.

Claims (2)

1. the feed gear inclination adjusting device of a Sewing machines is characterized in that, has:
Lower shaft, it is driven to same direction rotation;
The 1st square block, it is free to rotately chimeric with the eccentric part that is formed on the aforementioned lower shaft;
Eccentric cam, it is fixed on the aforementioned lower shaft;
The bottom and top feed bar, itself and aforementioned eccentric cam are chimeric, utilize the rotation of this eccentric cam to carry out reciprocally swinging;
Swing up and down axle, it is configured to have the axis parallel with aforementioned lower shaft;
The 2nd square block, it is free to rotately with to be formed at the aforementioned eccentric part that swings up and down on the axle chimeric;
Main swing arm and differential swing arm, each is supported on respectively on aforementioned two square blocks in aforementioned main swing arm and the differential swing arm;
Main feeding tooth, it is fixed on the aforementioned main swing arm;
The differential feed tooth, it is fixed on the aforementioned differential swing arm;
Lever up and down, it utilizes screw to be fixed on aforementioned swinging up and down on the axle, links with aforementioned eccentric cam;
Adjustment block, it is fixed in aforementioned swinging up and down on the axle, has the screw maintaining part; And
Adjust screw, its screw-in is formed in the screw support portion on the aforementioned up and down lever, be fixed in simultaneously in the screw maintaining part of aforementioned adjustment block,
With aforementioned up and down lever fixedly the screw of usefulness unscrew, then make aforementioned adjustment screw advance and retreat, thereby the aforementioned axle that swings up and down rotated, make thus the height change of aforementioned the 2nd square block, thereby make the heeling condition variation of aforementioned two feeding teeth.
2. the feed gear inclination adjusting device of Sewing machines according to claim 1 is characterized in that,
Also have sewing machine base, aforementioned up and down lever fixedly screw and the aforementioned adjustment screw of usefulness are accommodated by section within it,
Aforementioned sewing machine base, with the aforementioned up and down lever position that fixedly screw of usefulness is relative, reach on the position relative with aforementioned adjustment screw, form respectively handle hole.
CN 200810147549 2007-08-31 2008-08-28 Feed gear inclination adjusting device of sewing machine Expired - Fee Related CN101377036B (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2007-225518 2007-08-31
JP2007225518 2007-08-31
JP2007225518A JP2009056086A (en) 2007-08-31 2007-08-31 Feed dog inclination adjusting device for sewing machine

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CN101377036A CN101377036A (en) 2009-03-04
CN101377036B true CN101377036B (en) 2013-02-27

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CN103469499B (en) * 2013-09-23 2015-04-22 星锐缝纫机(嘉兴)有限公司 Fabric conveying mechanism for back tacking of sewing machine
CN103668796A (en) * 2013-12-19 2014-03-26 吴江市菀坪宝得利缝制设备机械厂 Feed dog of sewing machine
JP6679158B2 (en) * 2015-10-30 2020-04-15 蛇の目ミシン工業株式会社 Feed dog adjusting mechanism and sewing machine equipped with the adjusting mechanism
JP2018187056A (en) * 2017-05-02 2018-11-29 Juki株式会社 sewing machine
CN109537181B (en) * 2018-11-19 2021-03-12 杰克缝纫机股份有限公司 Feed dog inclination angle adjusting mechanism and sewing machine
CN112281332B (en) * 2019-07-24 2022-12-09 高林股份有限公司 Transfer gear transmission configuration structure of sewing machine
CN110547845B (en) * 2019-09-29 2024-05-10 重庆西山科技股份有限公司 Grinding handle power transmission mechanism with adjustable swing angle and grinding tool
CN112853631B (en) * 2019-11-28 2022-07-05 杰克科技股份有限公司 Flat seaming machine

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Publication number Priority date Publication date Assignee Title
CN86208366U (en) * 1986-04-10 1987-10-31 飞马缝纫机制造株式会社 Feeding mechanism of barrel shaped sewing machine
CN1069535A (en) * 1991-06-26 1993-03-03 美马缝纫机制造股份有限公司 The upper feeding device of Sewing machines
CN1912223A (en) * 2005-08-09 2007-02-14 星锐缝纫机股份有限公司 Gear differential feed mechanism of moving forward and backward of horizontal cylinder type sewing machine

Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
CN86208366U (en) * 1986-04-10 1987-10-31 飞马缝纫机制造株式会社 Feeding mechanism of barrel shaped sewing machine
CN1069535A (en) * 1991-06-26 1993-03-03 美马缝纫机制造股份有限公司 The upper feeding device of Sewing machines
CN1912223A (en) * 2005-08-09 2007-02-14 星锐缝纫机股份有限公司 Gear differential feed mechanism of moving forward and backward of horizontal cylinder type sewing machine

Non-Patent Citations (2)

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Title
JP特开2003-220288A 2003.08.05
JP特开平5-200178A 1993.08.10

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