CN109402877A - A kind of work feed adjustment mechanism of sewing machine - Google Patents
A kind of work feed adjustment mechanism of sewing machine Download PDFInfo
- Publication number
- CN109402877A CN109402877A CN201811404195.0A CN201811404195A CN109402877A CN 109402877 A CN109402877 A CN 109402877A CN 201811404195 A CN201811404195 A CN 201811404195A CN 109402877 A CN109402877 A CN 109402877A
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- Prior art keywords
- work feed
- connecting rod
- crank
- sewing machine
- needle
- Prior art date
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Links
- 238000009958 sewing Methods 0.000 title claims abstract description 29
- 230000007246 mechanism Effects 0.000 title claims abstract description 20
- 239000004744 fabric Substances 0.000 claims abstract description 56
- 238000009434 installation Methods 0.000 claims description 4
- 210000000515 tooth Anatomy 0.000 description 31
- 238000010586 diagram Methods 0.000 description 6
- 230000006641 stabilisation Effects 0.000 description 4
- 238000011105 stabilization Methods 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B27/00—Work-feeding means
- D05B27/10—Work-feeding means with rotary circular feed members
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B27/00—Work-feeding means
- D05B27/02—Work-feeding means with feed dogs having horizontal and vertical movements
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05D—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES D05B AND D05C, RELATING TO SEWING, EMBROIDERING AND TUFTING
- D05D2209/00—Use of special materials
- D05D2209/08—Use of special materials elastic, e.g. rubber spring
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The invention discloses a kind of work feed adjustment mechanisms of sewing machine, including main shaft, cloth pushing shaft, upper feed dog frame and upper cloth conveying teeth, it further include upper cloth pushing shaft crank, upper work feed connecting rod crank axis and the work feed being socketed on main shaft adjust component, the upper cloth pushing shaft crank is socketed on the upper work feed connecting rod crank axis by intermediate axis hole rotation, the work feed adjustment component includes work feed connecting rod, work feed connecting rod one end is connected to outside the main shaft by connecting rod axis hole turning set, the other end is rotationally connected with the upper cloth pushing shaft crank, the work feed adjustment component further includes out needle button, it is fixedly attached on main shaft and opens needle locating wheel, the eccentric wheel that positioning gear and rotation are socketed on main shaft, open needle eccentric wheel, sliding positioning gear piece.The present invention uses upper cloth pushing shaft crank, so that structure is simpler, operation is more stable, and parts depreciation is slower, long service life, and the noise generated when machine operation is smaller；Present invention control is simple, easy to adjust.
Description
Technical field
The invention belongs to technical field of textile equipment, in particular to the work feed adjustment mechanism of a kind of sewing machine.
Background technique
Sewing machine generally comprises work feed adjustment mechanism, to adjust seam away from.In the prior art, usually according to the big of fabric
Axle speed small and that open needle locating wheel is adjusted, and structure is excessively complicated, and adjustment is inconvenient and precision is poor, and part is working
In engineering, the frictional force being subject to is larger, and service life is short, can generate biggish noise.
Application No. is 201820120925.3 utility model patents, disclose a kind of work feed adjustment device of sewing machine,
Turn actuator, Dual-spindle linked bar, seam away from adjustment component and transmission including the first cloth feeding mechanism, the second cloth feeding mechanism, swing component, axis
Connecting rod, seam include dial, trigger piece and swing rod away from adjustment component, and trigger piece is worn by spin ornament to be connect dial and be formed in pedestal
Outside, wherein switching trigger piece will be joined by spin ornament, swing rod and twin shaft
Lever changes position of the sliding block in guide channel, so as to the front and back of synchronous adjustment the first cloth conveying teeth and the second cloth conveying teeth
Shift motion；Whereby, convenience of the seam away from adjustment greatly improves.But the device and be biggish simplified overall structure, transporting
During row, abrasion and failure easily occurs.
Summary of the invention
The purpose of the present invention is to provide a kind of work feed adjustment mechanism of sewing machine, structure is simple, easy to adjust, operation is steady
It is fixed, part is not easy to wear, long service life, to generate noise small.
To achieve the goals above, the technical solution of the present invention is as follows: a kind of work feed adjustment mechanism of sewing machine, including master
Axis, the upper cloth pushing shaft parallel with main shaft, the upper feed dog frame being mounted on upper cloth pushing shaft, be mounted on upper feed dog frame on give
Cloth tooth, further includes upper cloth pushing shaft crank and the work feed being socketed on main shaft adjustment component, and the upper cloth pushing shaft crank includes mutual
The retainer armshaft and adjustment armshaft being fixedly connected, the upper cloth pushing shaft crank are opened up by retainer armshaft and adjustment armshaft junction
Axis hole be rotatablely connected upper work feed connecting rod crank axis, the upper work feed connecting rod crank axis is mounted on sewing machine case, the tooth
Frame armshaft connects the upper cloth pushing shaft by driving crank component, and the work feed adjustment component includes work feed connecting rod, the work feed
Connecting rod one end is connected to outside the main shaft by connecting rod axis hole turning set, and the other end is rotationally connected with the adjustment armshaft, described
Work feed adjustment component further include be mounted on casing can slide axially open needle button, be fixedly attached on the main shaft
Open needle locating wheel, positioning gear and rotation be socketed on the main shaft eccentric wheel, open needle eccentric wheel, sliding positioning gear piece,
The needle eccentric wheel of opening is fixedly mounted on work feed connecting rod side and is extended with internal axle sleeve to work feed connecting rod, the internal axle sleeve with
There are gap between the connecting rod axis hole of work feed connecting rod, the eccentric wheel is socketed in the gap, described to open needle locating wheel
Far from eccentric small axis is provided in the axial direction at central shaft, the small axis of bias is rotatably installed on the eccentric wheel, described
It opens to offer on end face of the needle eccentric wheel relative to the work feed connecting rod and opens the identical sliding slot of needle button glide direction, institute with described
It states sliding positioning gear piece to be slidably mounted in the sliding slot, the one end of the sliding positioning gear piece in the sliding slot glide direction
End be provided with the limiting tooth that is meshed of positioning gear, it is described to open needle button end close to the sliding to position gear piece remote
From limiting tooth one end.
Wherein, by press it is described open needle button, the sliding can be pushed to position gear piece and opened on needle eccentric wheel described
The sliding slot in slide, make the limiting tooth and the positioning gear be disengaged from state.
Preferably, the driving crank component includes connecting crank and work feed connecting rod crank, the work feed connecting rod crank
One end is fixedly attached on the upper cloth pushing shaft, and the other end is rotatablely connected the connecting crank by connecting crank pivot pin, described
The connecting crank other end is rotatablely connected the retainer armshaft of upper cloth pushing shaft crank, this structure by work feed connecting rod crank pivot pin
The rotation of cloth pushing shaft can be made more smooth, keep the operation of cloth conveying teeth more smooth and steady.
In the inventive solutions, the upper cloth pushing shaft, upper work feed connecting rod crank axis and main shaft are rotatably installed in
In the casing of sewing machine, in addition to rotation, the displacement in other directions not can be carried out, when in use, the main axis, described in drive
Open the rotation of needle locating wheel, it is described to open needle locating wheel band movable eccentric wheel eccentric rotary is made with movable eccentric wheel by eccentric small axis, pass through
Eccentric wheel, the cooperation for opening needle eccentric wheel and connecting rod axis hole, the work feed connecting rod work pump apart from constant, Jin Ertong
Crossing work feed connecting rod crank makes cloth conveying teeth realize work feed.
Preferably, the work feed adjustment component further includes positioning torsional spring, the positioning one end of torsional spring is fixedly mounted on institute
It states out on needle eccentric wheel, the other end is placed in the groove being provided on the side of sliding positioning gear piece limiting tooth one end, institute
Stating positioning torsional spring can be such that the sliding positioning gear piece slides in and out, and the limiting tooth is made to keep engaging shape with the positioning gear
State.
Technical principle of the invention are as follows: sliding positioning gear piece and positioning gear cooperation do not position sliding opening needle button
When gear piece is pressed, the positioning torsional spring tightly engages the limiting tooth for sliding positioning tooth on piece with positioning gear, at this point,
Opening needle eccentric wheel cannot be relative to main axis, and the eccentricity for opening needle eccentric wheel and eccentric wheel cannot be adjusted, when needing to adjust two
When person's eccentricity, needle button is pressed off by pressing, the limiting tooth for sliding positioning tooth on piece is released and positions engaging for gear, open needle
Eccentric wheel, work feed connecting rod can surround main axis, and at this time by rotating the main shaft, band movable eccentric wheel is rotated, thus split needle
Eccentricity between eccentric wheel and eccentric wheel is adjusted, thus change the oscillator arc of work feed connecting rod crank Yu work feed connecting rod,
The stroke for adjusting upper cloth conveying teeth, realize opposite joint away from adjustment.
Preferably, offering small eccentricity wheel bore on the eccentric wheel, inner rotation installs the small eccentricity wheel, described small
Far from being offered at its central axes with small eccentricity wheel shaft to the identical small axis hole of bias, the small axis of bias is rotatablely installed eccentric wheel
In the small axis hole of bias, this structure can make the more smooth stabilization of the eccentric motion of eccentric wheel, reduce friction, and reduction is made an uproar
Sound prolongs the service life.
Preferably, between the internal axle sleeve and the connecting rod axis hole of work feed connecting rod gap in uneven thickness, i.e. institute
Connecting rod axis hole eccentric setting described in internal axle sleeve is stated, keeps the swing of work feed connecting rod more gentle smooth.
Preferably, be provided on the casing of sewing machine for install it is described open needle button open needle button set, convenient for peace
Dress maintenance.
Preferably, being provided with feed dog frame bushing between the upper feed dog frame and the upper cloth pushing shaft, make to send
Installation between cloth retainer and the upper cloth pushing shaft is more firm, avoids loosening or damage.
Preferably, the main shaft is mounted in the casing of sewing machine by bearing, make the more smooth stabilization of rotation.
Preferably, it is provided with stop screw in the circumferential direction of the positioning gear, it is described to open the sliding slot on needle eccentric wheel
There are two lug boss, the stop screws to be located between two lug bosses for two sides setting, the stop screw and the lug boss
It matches, forms the rotation adjustment angle for opening needle eccentric wheel.
Preferably, one of them of the lug boss can be used for installing the positioning torsional spring.
In the inventive solutions, unless otherwise indicated, the rotation connection is that pivot pin is connected with shaft hole matching.
The beneficial effects of the present invention are as follows:
1. using upper cloth pushing shaft crank, so that structure is simpler, operation is more stable, and parts depreciation is slower, long service life,
And the noise generated when machine operation is smaller；
2. being provided with eccentric wheel, small eccentricity wheel and opening needle eccentric wheel, keep the swing of work feed connecting rod more smooth and steady；
3. by opening the control of needle button, and being provided with positioning torsional spring, fixed effect using sliding positioning gear piece and positioning gear
It is good, it is not easy to loosen, and easy to control laborsaving；
4. positioning screw and two raised portion fits adjust convenient for angle.
Detailed description of the invention
Fig. 1 is the installation diagram of the embodiment of the present invention.
Fig. 2 is the Structure explosion diagram of the embodiment of the present invention.
Fig. 3 is the structural schematic diagram of work feed of embodiment of the present invention connecting rod.
Fig. 4 is the structural schematic diagram of sliding positioning blade of the embodiment of the present invention.
Fig. 5 is the structural schematic diagram of cloth pushing shaft crank in the embodiment of the present invention.
Fig. 6 is the structural schematic diagram of small eccentricity of embodiment of the present invention wheel.
Items are respectively as follows: cloth conveying teeth on 1 in figure, feed dog frame on 2, feed dog frame bushing on 3, cloth pushing shaft on 4,5 connections
Crank pivot pin, 6 connecting cranks, 7 work feed connecting rod cranks, cloth pushing shaft crank on 8,9 work feed connecting rod crank pivot pins, 10 work feed connecting rods,
11 bearings, 12 open needle locating wheel, and 13 small eccentricity wheels, 14 eccentric wheels, 15 open needle eccentric wheel, 16 sliding positioning gear pieces, 17 positioning tooths
It takes turns, work feed connecting rod crank axis on 18,19 open needle button set, and 20 open needle button, 21 main shafts, 22 casings, 23 retainer armshafts, 24 adjustment
Armshaft, 25 connecting rod axis holes, 26 internal axle sleeves, 27 gaps, 28 eccentric small axis, 29 sliding slots, 30 limiting tooths, 31 positioning torsional springs, 32 grooves,
33 small eccentricity wheel bore, 34 eccentric small axis holes, 35 stop screws, 36 lug bosses.
Specific embodiment
Technical solution of the present invention is explained in detail below in conjunction with embodiment and attached drawing.It should be noted that
In the technical solution of the present embodiment, the rotation connection is that pivot pin is connected with axis hole.
As shown in Fig. 1 ~ 5, a kind of work feed adjustment mechanism of sewing machine, including main shaft 21, the upper work feed parallel with main shaft 21
Axis, the upper feed dog frame 2 being mounted on cloth pushing shaft 4, the upper cloth conveying teeth 1 being mounted on feed dog frame 2, further include upper work feed
Axis crank 8 and the work feed being socketed on main shaft 21 adjust component, and the upper cloth pushing shaft crank 8 includes the retainer being mutually permanently connected
Armshaft 23 and adjustment armshaft 24, the axis that the upper cloth pushing shaft crank 8 is opened up by retainer armshaft 23 and adjustment 24 junction of armshaft
Hole is rotatablely connected upper work feed connecting rod crank axis 18, and the upper work feed connecting rod crank axis 18 is mounted on the casing 22 of sewing machine, institute
It states retainer armshaft 23 and the upper cloth pushing shaft 4 is connected by driving crank component, the work feed adjustment component includes work feed connecting rod 10,
Described 10 one end of work feed connecting rod is socketed on outside the main shaft 21 by the rotation of connecting rod axis hole 25, and the other end is rotationally connected with described
Adjust armshaft 24, work feed adjustment component further include be mounted on casing 22 can slide axially open needle button 20,
The bias opening needle locating wheel 12, positioning gear 17 and rotation and being socketed on the main shaft 21 being fixedly attached on the main shaft 21
Wheel 14 opens needle eccentric wheel 15, sliding positioning gear piece 16, and the needle eccentric wheel 15 of opening is fixedly mounted on 10 side of work feed connecting rod
And be extended with internal axle sleeve 26 to work feed connecting rod 10, between the internal axle sleeve 26 and the connecting rod axis hole 25 of work feed connecting rod 10 there are
Gap 27, the eccentric wheel 14 are socketed in the gap 27, and the needle locating wheel 12 of opening is far from the axial direction at central shaft
It is provided with eccentric small axis 28, the small axis 28 of bias is rotatably installed on the eccentric wheel 14, described to open needle eccentric wheel 15 relatively
The identical sliding slot 29 of 20 glide direction of needle button is opened with described in offering on the end face of the work feed connecting rod 10, the sliding is fixed
Position gear piece 16 is slidably mounted in the sliding slot 29, the one end of the sliding positioning gear piece 16 in 29 glide direction of sliding slot
End is provided with the limiting tooth 30 being meshed with the positioning gear 17, and 20 end of needle button of opening is positioned close to the sliding
Gear piece 16 is far from 30 one end of limiting tooth.
Wherein, by press it is described open needle button 20, the sliding positioning gear piece 16 can be pushed described, and to open needle eccentric
It is slided in the sliding slot 29 on wheel 15, the limiting tooth 30 is made to be disengaged from state with the positioning gear 17.
In the present embodiment, the driving crank component includes connecting crank 6 and work feed connecting rod crank 7, and the work feed connects
7 one end of pole crank is fixedly attached on the upper cloth pushing shaft 4, and the other end is rotatablely connected the connection by connecting crank pivot pin 5
Crank 6,6 other end of connecting crank are rotatablely connected the retainer of upper cloth pushing shaft crank 8 by work feed connecting rod crank pivot pin 9
Armshaft 23, this structure can make the rotation of cloth pushing shaft 4 more smooth, keep the operation of cloth conveying teeth 1 more smooth and steady.
In the technical scheme of this embodiment, the upper cloth pushing shaft 4, upper work feed connecting rod crank axis 18 and main shaft 21 rotate
It is mounted in the casing 22 of sewing machine, in addition to rotation, not can be carried out the displacement in other directions, when in use, 21 turns of the main shaft
It is dynamic, open the rotation of needle locating wheel 12 described in drive, it is described to open needle locating wheel 12 and driven partially with movable eccentric wheel 14 by eccentric small axis 28
Heart wheel 14 makees eccentric rotary, by eccentric wheel 14, opens the cooperation of needle eccentric wheel 15 and connecting rod axis hole 25, the work feed connecting rod 10 is made
It pumps apart from constant, and then so that cloth conveying teeth 1 is realized work feed by work feed connecting rod crank 7.
As shown in figure 4, the work feed adjustment component further includes positioning torsional spring 31, described 31 one end of positioning torsional spring is fixedly mounted
It is opened on needle eccentric wheel 15 described, the other end is placed on the side for being provided with the sliding positioning 16 limiting tooth of gear piece, 30 one end
In groove 32, the positioning torsional spring 31 can be such that sliding positioning gear piece 16 slides in and out, make the limiting tooth 30 with it is described fixed
Position gear 17 keeps meshing state.
The technical principle of the present embodiment are as follows: sliding positioning gear piece 16 and positioning gear 17 cooperate, not right opening needle button 20
When sliding positioning gear piece 16 is pressed, the positioning torsional spring 31 makes the limiting tooth 30 and positioning tooth on sliding positioning gear piece 16
Wheel 17 tightly engages, at this point, opening needle eccentric wheel 15 cannot rotate relative to main shaft 21, opens the inclined of needle eccentric wheel 15 and eccentric wheel 14
Heart amount cannot be adjusted, and when needing to adjust the two eccentricity, press off needle button 20 by pressing, and make the limit on sliding positioning gear piece 16
Position tooth 30 releases and positions engaging for gear 17, and opening needle eccentric wheel 15, work feed connecting rod 10 can rotate around main shaft 21, pass through at this time
The main shaft 21 is rotated, band movable eccentric wheel 14 rotates, so that the eccentricity between split needle eccentric wheel 15 and eccentric wheel 14 carries out
Adjustment adjusts the stroke of upper cloth conveying teeth 1 to change the oscillator arc of work feed connecting rod connecting rod crank 7 Yu work feed connecting rod 10, real
Existing opposite joint away from adjustment.
As shown in figure 5, offering small eccentricity wheel bore 33 on the eccentric wheel 14, inner rotation installs the small eccentricity wheel
34, the small eccentricity wheel 34 far from offered at its central axes with the axial identical small axis hole 34 of bias of the small eccentricity wheel 34,
The small axis 28 of bias is rotatably installed in the small axis hole 34 of the bias, and this structure can make the eccentric motion of eccentric wheel 14 more
Add smooth stabilization, reduce friction, reduces noise, prolong the service life.
As shown in figure 3, the thickness in gap 27 is not between the internal axle sleeve 26 and the connecting rod axis hole 25 of work feed connecting rod 10
Uniformly, i.e., the described internal axle sleeve 26 and 25 eccentric setting of connecting rod axis hole, keep the swing of work feed connecting rod 10 more gentle smooth.
Such as figure or shown in 2, in the present embodiment, it is provided on the casing 22 of sewing machine and described opens needle button 20 for installing
Open needle button set 19, be easily installed maintenance.Feed dog is provided between the upper feed dog frame 2 and the upper cloth pushing shaft 4
Frame bushing 3 keeps the installation between feed dog frame 2 and the upper cloth pushing shaft 4 more firm, avoids loosening or damage.The master
Axis 21 is mounted in the casing 22 of sewing machine by bearing 11, makes the more smooth stabilization of rotation.
As shown in figure 3, it is provided with stop screw 35 in the circumferential direction of the positioning gear 17, it is described to open institute on needle eccentric wheel 15
The setting of 29 two sides of sliding slot is stated there are two lug boss 36, the stop screw 35 is located between two lug bosses 36, the limit spiral shell
Nail 35 is matched with the lug boss 36, forms the rotation adjustment angle for opening needle eccentric wheel 15.
Wherein, one of them of the lug boss 36 can be used for installing the positioning torsional spring 31.
Claims (10)
1. the work feed adjustment mechanism of a kind of sewing machine, including main shaft (21), the upper cloth pushing shaft (4) parallel with main shaft (21), installation
In the upper feed dog frame (2) on upper cloth pushing shaft (4), the upper cloth conveying teeth (1) that is mounted on upper feed dog frame (2), it is characterised in that:
It further include upper cloth pushing shaft crank (8) and the work feed being socketed on main shaft (21) adjustment component, the upper cloth pushing shaft crank (8) includes
The retainer armshaft (23) and adjustment armshaft (24), the retainer armshaft (23) being mutually permanently connected are connected by driving crank component
The upper cloth pushing shaft (4), the work feed adjustment component includes work feed connecting rod (10), and described work feed connecting rod (10) one end passes through connecting rod
Axis hole (25) rotation is socketed on the main shaft (21) outside, and the other end is rotationally connected with the adjustment armshaft (24), the work feed
Adjustment component further include be mounted on casing (22) can slide axially open needle button (20), be fixedly attached to the master
On axis (21) open needle locating wheel (12), positioning gear (17) and rotation be socketed in eccentric wheel (14) on the main shaft (21),
Needle eccentric wheel (15), sliding positioning gear piece (16) are opened, the needle eccentric wheel (15) of opening is fixedly mounted on the work feed connecting rod (10)
Side is simultaneously extended with internal axle sleeve (26) to work feed connecting rod (10), the pitman shaft of the internal axle sleeve (26) and work feed connecting rod (10)
There are gap (27) between hole (25), and the eccentric wheel (14) is socketed in the gap (27), described to open needle locating wheel (12)
Far from eccentric small axis (28) is provided in the axial direction at central shaft, the small axis of bias (28) is rotatably installed in the eccentric wheel
(14) it on, is offered on the end face for opening needle eccentric wheel (15) relative to the work feed connecting rod (10) and opens needle button with described
(20) the identical sliding slot of glide direction (29), sliding positioning gear piece (16) is slidably mounted in the sliding slot (29), described
One end end of sliding positioning gear piece (16) in the sliding slot (29) glide direction is provided with and positioning gear (17) phase
The limiting tooth (30) of engagement, it is described to open needle button (20) end close to sliding positioning gear piece (16) far from limiting tooth (30) one
End.
2. a kind of work feed adjustment mechanism of sewing machine according to claim 1, it is characterised in that: the driving crank component
Including connecting crank (6) and work feed connecting rod crank (7), described work feed connecting rod crank (7) one end is fixedly connected with the upper cloth pushing shaft
(4), the other end is rotationally connected with the connecting crank (6), and connecting crank (6) other end is rotationally connected with cloth pushing shaft song
The retainer armshaft (23) of handle (8).
3. a kind of work feed adjustment mechanism of sewing machine according to claim 1, it is characterised in that: the work feed adjusts component
Further include positioning torsional spring (31), described positioning torsional spring (31) one end be fixedly mounted on described in open on needle eccentric wheel (15), the other end
It is placed in the groove (32) being provided on the side of sliding positioning gear piece (16) limiting tooth (30) one end.
4. a kind of work feed adjustment mechanism of sewing machine according to claim 1, it is characterised in that: the internal axle sleeve (26) with
In uneven thickness, i.e., the described internal axle sleeve (26) and the institute in the gap (27) between the connecting rod axis hole (25) of work feed connecting rod (10)
State connecting rod axis hole (25) eccentric setting.
5. a kind of work feed adjustment mechanism of sewing machine according to claim 1, it is characterised in that: on the eccentric wheel (14)
It offers small eccentricity wheel bore (33), inner rotation installs the small eccentricity wheel (13), and the small eccentricity wheel (13) is far from its axis
It is offered at line and is rotatably installed in institute with the axial identical small axis hole of bias (34) of small eccentricity wheel (13), the small axis of bias (28)
It states in eccentric small axis hole (34).
6. a kind of work feed adjustment mechanism of sewing machine according to claim 1, it is characterised in that: the positioning gear (17)
Circumferential direction on be provided with stop screw (35), it is described to open sliding slot (29) two sides setting on needle eccentric wheel (15) there are two protrusions
Portion (36), the stop screw (35) are located between two lug bosses (36).
7. a kind of work feed adjustment mechanism of sewing machine according to claim 1, it is characterised in that: the casing (22) of sewing machine
On be provided with for install it is described open needle button (20) open needle button set (19).
8. a kind of work feed adjustment mechanism of sewing machine according to claim 1, it is characterised in that: the upper feed dog frame
(2) it is provided between the upper cloth pushing shaft (4) feed dog frame bushing (3).
9. a kind of work feed adjustment mechanism of sewing machine according to claim 1, it is characterised in that: the main shaft (21) passes through
Bearing (11) is mounted in the casing (22) of sewing machine.
10. a kind of work feed adjustment mechanism of sewing machine according to claim 6, it is characterised in that: the lug boss (36)
One of them can be used for installing the positioning torsional spring (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811404195.0A CN109402877B (en) | 2018-11-23 | 2018-11-23 | Cloth feeding adjusting mechanism of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811404195.0A CN109402877B (en) | 2018-11-23 | 2018-11-23 | Cloth feeding adjusting mechanism of sewing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109402877A true CN109402877A (en) | 2019-03-01 |
| CN109402877B CN109402877B (en) | 2024-02-09 |
Family
ID=65474741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811404195.0A Active CN109402877B (en) | 2018-11-23 | 2018-11-23 | Cloth feeding adjusting mechanism of sewing machine |
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| Country | Link |
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| CN (1) | CN109402877B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113073428A (en) * | 2020-01-06 | 2021-07-06 | 杰克缝纫机股份有限公司 | Cloth feeding adjusting mechanism of sewing machine |
| CN114381871A (en) * | 2021-12-27 | 2022-04-22 | 际华三五零六纺织服装有限公司 | Pulsation type deviation-rectifying cloth feeding device of lockstitch sewing machine |
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| JP2010051775A (en) * | 2008-08-29 | 2010-03-11 | Chee Siang Industrial Co Ltd | Differential feed control mechanism of sewing machine |
| CN106988031A (en) * | 2017-06-02 | 2017-07-28 | 杰克缝纫机股份有限公司 | A kind of sewing machine |
| CN107447377A (en) * | 2017-09-19 | 2017-12-08 | 杰克缝纫机股份有限公司 | A kind of sewing machine |
| CN209957999U (en) * | 2018-11-23 | 2020-01-17 | 浙江乐江机械有限公司 | Cloth feeding adjusting mechanism of sewing machine |
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2018
- 2018-11-23 CN CN201811404195.0A patent/CN109402877B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010051775A (en) * | 2008-08-29 | 2010-03-11 | Chee Siang Industrial Co Ltd | Differential feed control mechanism of sewing machine |
| CN106988031A (en) * | 2017-06-02 | 2017-07-28 | 杰克缝纫机股份有限公司 | A kind of sewing machine |
| CN107447377A (en) * | 2017-09-19 | 2017-12-08 | 杰克缝纫机股份有限公司 | A kind of sewing machine |
| CN209957999U (en) * | 2018-11-23 | 2020-01-17 | 浙江乐江机械有限公司 | Cloth feeding adjusting mechanism of sewing machine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113073428A (en) * | 2020-01-06 | 2021-07-06 | 杰克缝纫机股份有限公司 | Cloth feeding adjusting mechanism of sewing machine |
| CN113073428B (en) * | 2020-01-06 | 2023-03-28 | 杰克科技股份有限公司 | Cloth feeding adjusting mechanism of sewing machine |
| CN114381871A (en) * | 2021-12-27 | 2022-04-22 | 际华三五零六纺织服装有限公司 | Pulsation type deviation-rectifying cloth feeding device of lockstitch sewing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109402877B (en) | 2024-02-09 |
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