CN107245814A - Adjustable lower differential feed mechanism - Google Patents
Adjustable lower differential feed mechanism Download PDFInfo
- Publication number
- CN107245814A CN107245814A CN201710484290.5A CN201710484290A CN107245814A CN 107245814 A CN107245814 A CN 107245814A CN 201710484290 A CN201710484290 A CN 201710484290A CN 107245814 A CN107245814 A CN 107245814A
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- Prior art keywords
- crank
- connecting rod
- interior
- tooth frame
- feed
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- 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
- D05B27/08—Work-feeding means with feed dogs having horizontal and vertical movements with differential feed motions
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B27/00—Work-feeding means
- D05B27/24—Feed-dog lifting and lowering devices
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/80—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in fisheries management
- Y02A40/81—Aquaculture, e.g. of fish
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The present invention relates to stitching process field, and in particular to a kind of adjustable lower differential feed mechanism.Its use adjustable lower difference structure not only can guarantee that different faces material mixing sewing when, the creep amount of fabric and bed material, can also meet special procedure sewing when contraction and fold.Technical solution of the present invention includes cloth pushing shaft and feed lifting rock shaft, it is connected respectively with cloth feeding mechanism, interior crank of tooth frame is connected on cloth pushing shaft, outer crank of tooth frame is connected with cloth feeding crank, interior crank of tooth frame and outer crank of tooth frame are connected with interior pressure rack and outer pressure rack respectively, it is arranged with feed lifting rock shaft on interior lift fork and outer feed lifting fork, outer cloth feeding crank and is connected with sliding block, sliding block, outer crank of tooth frame, interior lift fork, outer feed lifting fork invents adjustable lower differential feed mechanism by the smallclothes such as connecting rod, cushion block link cost.
Description
Technical field
The present invention relates to stitching process field, and in particular to a kind of adjustable lower differential feed mechanism.
Background technology
Current sewing machine it is conventional for single feed dog feeding, the cloth feed amount of feed dog follows the change of feed mechanism and same
Step change, sewing is generally double-deck sewing, is divided into fabric and bed material, when fabric and bed material are same sewing, using single
The general sewing machine of feed dog work feed be fully able to meet, but when sew special sewing when, due to fabric and bed material material not
Together so that feed dog generates sliding during work feed between fabric and bed material, cause that shrinking occurs in sewing and fold shows
As influenceing product quality, delaying man-hour.
The content of the invention
The present invention is in order to solve the above technical problems, provide a kind of adjustable lower differential feed mechanism, using adjustable lower difference
When dynamic structure not only can guarantee that the mixing sewing of different faces material, the creep amount of fabric and bed material, when can also meet special procedure sewing
Contraction and fold.
To solve the problem of prior art is present, the technical scheme is that：A kind of adjustable lower differential feed mechanism,
Including cloth feeding mechanism, it is characterised in that：Also include cloth pushing shaft, lift last item, needle plate, interior crank of tooth frame, interior retainer, outer retainer bent
Handle, outer retainer, outer cloth feeding crank, long connecting rod one, long connecting rod two, short connecting rod one, short connecting rod two, outer feed lifting fork and interior feed lifting fork；
The big cylinder that described interior crank of tooth frame is cracked by the integrally formed small column of upper end two and bottom side passes through connecting rod
Composition, the big cylinder in described bottom side of cracking is respectively perpendicular and is extended with triangle ear, described small column, big cylinder and triangle
Through hole is respectively arranged with the ear of shape；
Described outer crank of tooth frame is by the integrally formed small column of upper end two, middle one big cylinder and the small column of lower end one
Connected by connecting rod, through hole is respectively arranged with described small column and big cylinder；
Described outer cloth feeding crank include T-shape post, the bigger diameter end of T-shape post be arranged with connecting rod, T-shape post be provided with it is logical
The big hole two and small sircle hole two for being additionally provided with and being communicated with rectangle chute on rectangle chute, connecting rod are provided with hole, connecting rod,
Be provided with the bigger diameter end of T-shape post communicated with through hole step up groove and screw, the port of the miner diameter end of T-shape post sets back-up ring
Annular groove, the small column of T-shape post is close to step surface and is provided with annular groove, and annular groove is symmetrical centered on the clamping slot in T " type post great circles
150 ° of rotation；
Described cloth pushing shaft is step cylinder axis, and the big face of cylinder is connected with cloth feeding mechanism, and interior tooth is fixed with the big cylinder in left side
It is fixed with interior retainer cam pin between frame crank, the small column of top two of described interior crank of tooth frame, described interior retainer
One end is set on the interior retainer cam pin in the middle of two roundlet pylons above crank of tooth frame, described interior retainer upper end it is flat
Interior feed dog is fixed with face one；Described outer crank of tooth frame is sheathed on the small column of T " type posts of outer cloth feeding crank, outer tooth
Outer retainer cam pin is fixed between two roundlet pylons above frame crank, one end of lower section small column and long connecting rod one is hinged；
One end of described outer retainer is arranged on the outer retainer cam pin in the middle of two roundlet pylons above outer crank of tooth frame, described
Outer retainer upper end plane two on be fixed with outer feed dog；It is small that the T-shape post of described outer cloth feeding crank is fixed on cloth pushing shaft
On cylinder, sliding block is provided with the rectangle chute below outer cloth feeding crank, described sliding block is shaped as square block and circle
Screw two is provided with the T-shape of post composition, described square block, described rectangle chute and sliding block pass through regulating bolt
Cylinder on the right side of connection, described sliding block is connected with one end of long connecting rod two；The big hole of described limiting plate, which is sheathed on, to be sent outside
It is arranged on cloth crank on the left of outer crank of tooth frame, the screw three on the long slot bore and baseplate of sewing machine of limiting plate is connected, limiting plate
On small sircle hole on the short pin shaft that is provided through, the outer sheath of limiting plate is provided with short connecting rod one, the short pin shaft upper limit on short pin shaft
The inner sleeve of fixed board is provided with short connecting rod two；The other end of short connecting rod two, the other end of long connecting rod two, the other end of short connecting rod one,
The other end of long connecting rod one is through in long pin shaft successively；
It is connected on the right side of described feed lifting rock shaft with feed mechanism, left side is fixed with interior feed lifting fork and outer feed lifting fork, described interior lift tooth
Inner slide is provided with the chute of fork, described inner slide is hinged with the interior retainer other end by axial screw one；Described is outer
Outer slide is provided with feed lifting fork chute, described outer slide is hinged with the outer retainer other end by axial screw two.
It is provided between described regulating bolt and outer cloth feeding crank in the regulating bolt in locking nut, described chute
It is provided with back-up ring one and pad one.
Having strong market potential on the outside of cushion block one, long connecting rod one is provided between short connecting rod one and long connecting rod one in described long pin shaft
Axle is disposed with pad two and back-up ring two.
Back-up ring one is provided between outer crank of tooth frame and interior crank of tooth frame.
Described interior work feed and the feed dog of outer feed dog are arranged in the needle plate slot of needle plate.
The described groove width for stepping up groove is 1.2mm, and annular groove is that 1mm is wide.
Compared with prior art, advantages of the present invention is as follows：
1st, when the difference structure can be solved because of the mixing sewing of different fabrics, the out-of-flatness caused by the creep amount of fabric and bed material shows
As making sewing attractive in appearance.
2nd, using the method for rotation regulation, different differential ratios can be realized easily, and adjustment is simple, efficient and convenient.
Brief description of the drawings
Fig. 1 is assembling schematic diagram of the present invention；
Fig. 2 is explosive view of the present invention；
Fig. 3 is retainer crank structure schematic diagram in the present invention；
Fig. 4 is the outer crank of tooth frame structural representation of the present invention；
Fig. 5 is retainer structural representation in the present invention；
Fig. 6 is the outer retainer structural representation of the present invention；
Fig. 7 limits plate structure schematic diagram for the present invention；
Fig. 8 is the outer work feed crank structure schematic diagram of the present invention；
Fig. 9 is the outer another angled arrangement schematic diagram of cloth feeding crank of the present invention；
Figure 10 is present invention slider structural representation；
Figure 11 base arrangement schematic diagrames of the present invention；
Inside and outside feed dog " stretching " the feeding state diagram of Figure 12 present invention；
Inside and outside feed dog " synchronization " the feeding state diagram of Figure 13 present invention；
Inside and outside feed dog " contraction " the feeding state diagram of Figure 14 present invention；
In figure：Retainer in retainer cam pin in crank of tooth frame in 1- cloth pushing shafts, 2- small cylindrical surfaces, 3-, 4-, 5-, 6- planes one, 7-
Interior feed dog, the outer crank of tooth frame of 8-, the outer retainer cam pins of 9-, the outer retainers of 10-, 11- planes two, the outer feed dogs of 12-, 13- is limited
Plate, 14- long slot bores, 15- big holes, 16- small sircle holes, the outer cloth feeding cranks of 17-, 18- clamping slots, 19- screws, 20- annular grooves, 21-
Step surface, 22- small columns, 23- back-up ring annular grooves, 24- chutes, 25- big holes two, 26- small sircle holes two, 27- regulating bolts, 28-
Locking nut, 29- pads one, 30- back-up rings one, 31- sliding blocks, 32- screws two, 33- cylinders, 34- long pin shafts, 35- short connecting rods two,
36- long connecting rods two, 37- short pin shafts, 38- back-up rings, 39- short connecting rods one, 40- cushion blocks, 41- long connecting rods one, 42- cloth feeding mechanisms, 43-
It is sliding outside feed lifting fork in feed lifting rock shaft, 44-, 45- axial screws one, 46- inner slides, the outer feed lifting forks of 47-, 48- axial screws two, 49-
Block, 50- needle plates, 51- bottom plates, 52- screws three, 53- pads two, 54- back-up rings two.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Referring to Fig. 1-14：A kind of adjustable lower differential feed mechanism, including cloth feeding mechanism 42, in addition to cloth pushing shaft 1, lift
Last item 43, needle plate 50, interior crank of tooth frame 3, interior retainer 5, outer crank of tooth frame 8, outer retainer 10, outer cloth feeding crank 17, long connecting rod one
41st, long connecting rod 2 36, short connecting rod 1, short connecting rod 2 35, outer feed lifting fork 47 and interior feed lifting fork 44；
Referring to Fig. 3：The big cylinder that described interior crank of tooth frame 3 is cracked by the integrally formed small column of upper end two and bottom side
It is made up of connecting rod, the big cylinder in described bottom side of cracking is respectively perpendicular and is extended with triangle ear, described small column, great circle
Through hole is respectively arranged with the ear of post and triangle；
Referring to Fig. 4：Described outer crank of tooth frame 8 is by the integrally formed small column of upper end two, middle one big cylindrical box lower end
One small column is connected by connecting rod, and social son has through hole respectively on described small column and big cylinder；
Referring to Fig. 8：Described outer cloth feeding crank 17 includes T-shape post, and the bigger diameter end of T-shape post is arranged with connecting rod, T-shape post
On be provided with through hole, connecting rod and be provided with rectangle chute 24, the great circle communicated with rectangle chute 24 is additionally provided with connecting rod
Be provided with hole 2 25 and small sircle hole 2 26, the bigger diameter end of T-shape post communicated with through hole step up groove 18 and screw 19, it is described
The groove width for stepping up groove 18 is 1.2mm, and the port of the miner diameter end of T-shape post sets back-up ring annular groove 23, the step surface 21 of T-shape post
On be provided with annular groove 20, the small column 22 of T-shape post is close to step surface and is provided with 1mm annular grooves 20, and annular groove 20 is with T " type post great circles
On clamping slot 18 centered on 150 ° of symmetrical rotary；
Referring to Fig. 7：Described limiting plate 13 is " L " type part, is simultaneously provided with long slot bore 14, another side is provided with big hole 15
With small sircle hole 16, the described center of big hole 15 and the center of small sircle hole 16 are on the same line；
Participate in Fig. 2：Described cloth pushing shaft 1 is step cylinder axis, and the big face of cylinder is connected with cloth feeding mechanism, solid on the big cylinder in left side
It is connected with interior crank of tooth frame 3, interior retainer cam pin 4 is fixed between the small column of top two of described interior crank of tooth frame 3, it is described
One end of interior retainer 5 be set on the interior retainer cam pin 4 in the middle of two roundlet pylons of the top of crank of tooth frame 3, it is described
Interior feed dog 7 is fixed with the plane 1 of the interior upper end of retainer 5；Described outer crank of tooth frame 8 is sheathed on the T " of outer cloth feeding crank 17
On the small column of type post, outer retainer cam pin 9, lower section small column are fixed between the two roundlet pylons in the outer top of crank of tooth frame 8
It is hinged with one end of long connecting rod 1；One end of described outer retainer 10 is arranged two small columns in the outer top of crank of tooth frame 8
On outer retainer cam pin 9 in the middle of platform, outer feed dog 12 is fixed with the plane 2 11 of the described upper end of outer retainer 10；Described
The T-shape post of outer cloth feeding crank 17 is fixed on cloth pushing shaft small column 2, is set in the rectangle chute 24 of the outer lower section of cloth feeding crank 17
It is equipped with sliding block 31, being shaped as of described sliding block 31 sets in the T-shape that square block and cylinder 33 are constituted, described square block
Install and be equipped with screw 2 32, described rectangle chute 24 and sliding block 31 is connected by regulating bolt 27, described regulating bolt
Back-up ring one is provided with the regulating bolt 28 being provided between 27 and outer cloth feeding crank 7 in locking nut 28, described chute 24
30 and pad 1, the cylinder 33 on the described right side of sliding block 31 is connected with one end of long connecting rod 2 36；Described limiting plate 13
Big hole 15, which is sheathed on outer cloth feeding crank 17, is arranged at the outer left side of crank of tooth frame 8, the long slot bore 14 and sewing machine of limiting plate 13
Screw 3 52 on bottom plate 51 is connected（Participate in Figure 11）, the short pin shaft 37 being provided through on the small sircle hole 16 on limiting plate 13,
The outer sheath of limiting plate 13 is provided with the inner sleeve of limiting plate 13 on short connecting rod 1, short pin shaft 37 provided with short connecting rod on short pin shaft 37
2 35；The other end of short connecting rod 2 35, the other end of long connecting rod 2 36, the other end of short connecting rod 1, long connecting rod 1
The other end is through in long pin shaft 34 successively, is set between the short connecting rod 1 and long connecting rod 1 in described long pin shaft 34
There is cushion block 1, the long pin shaft 34 in the outside of long connecting rod 1 is disposed with pad 2 53 and back-up ring 2 54.
The described right side of feed lifting rock shaft 43 is connected with feed mechanism 42, and left side is fixed with interior feed lifting fork 44 and outer feed lifting fork 47,
Inner slide 46 is provided with the chute of described interior feed lifting fork 44, described inner slide 46 passes through axle position with the interior other end of retainer 5
Screw 1 is hinged；Outer slide 49 is provided with the described chute of outer feed lifting fork 47, described outer slide 49 and outer retainer 10 are another
One end is hinged by axial screw 2 48.
Back-up ring 1 is provided between described outer crank of tooth frame 8 and interior crank of tooth frame 3.
Described interior work feed 7 and the feed dog of outer feed dog 12 are arranged in the needle plate slot of needle plate 50, interior feed dog 7 and outer
Feed dog 12 is moved forward and backward in axial without motion in radial direction same plane.
The big hole 15 of described limiting plate 13 is set on the small column 22 of outer cloth feeding crank 17, left surface and step surface
21 are close to, and outer crank of tooth frame 8 is set on the small column 22 of outer cloth feeding crank 17, and the right flank of left surface and limiting plate 13 is tight
Patch, right flank is close to back-up ring 38, and back-up ring 38 is stuck in the circlip groove 23 on outer cloth feeding crank 17.
Described short connecting rod 1 is arranged at the right side of limiting plate 13, and short connecting rod 2 35 is arranged at the left side of limiting plate 13.
The course of work of the present invention：
The described cloth feed amount of interior feed dog 7 is in the same size with the cloth feed amount of feed mechanism 42, and outer crank of tooth frame 8 can be bent in outer work feed
Swung on the small column 22 of handle 17, by the regulating bolt 27 on cloth feeding crank outside turn 17 sliding block 31 can be realized in rectangle chute
Movement in 24, in the case where the cloth feed amount of feed mechanism 42 is constant, when sliding block 31 is close to the center of cloth pushing shaft 1, outer work feed
The swing angle that crank 17 passes to outer crank of tooth frame 8 diminishes, so that drive the oscillating quantity of outer retainer 10 to reduce, outer feed dog 12
Cloth feed amount reduces, and now forms the form that the outer cloth feed amount of feed dog 12 is less than the interior cloth feed amount of feed dog 7, and sewing formation stretching is made
With.When sliding block 31 is away from 1 center of cloth pushing shaft, the swing angle that outer cloth feeding crank 17 passes to outer crank of tooth frame 8 becomes big, so that
The oscillating quantity increase of outer retainer 10 is driven, the outer work feed quantitative change of feed dog 12 is big, now form the outer cloth feed amount of feed dog 12 more than interior
The form of the cloth feed amount of feed dog 7, the effect shunk to sewing formation.
Pass through the turn of regulating bolt 27 on external cloth feeding crank 17, you can convenient to realize interior feed dog 7 and outer work feed
The differential feed of tooth 12, by the different position of sliding block 31, can be achieved different differential ratios.
Referring to Figure 12：" stretching " feeding state：When sliding block is located at outer work feed slide crank groove the top (Fig. 7), cloth pushing shaft
Swing power source simultaneously synchronous with the output of outer cloth feeding crank to interior crank of tooth frame, interior crank of tooth frame is connected directly between with interior retainer
Together, the oscillating quantity on feed dog swing in driving, interior retainer is consistent with the oscillating quantity that cloth pushing shaft is exported, and outer retainer is bent
The oscillating quantity of handle passes to the long connecting rod one for connecting outer crank of tooth frame by the long connecting rod two connected on outer cloth feeding crank, so that band
The swing of outer crank of tooth frame is moved, because sliding block is in above chute, so distance of its center apart from outer work feed crank center
Diminish, so that the oscillating quantity that outer cloth feeding crank passes to outer crank of tooth frame reduces, and the cloth feed amount of outer feed dog diminishes, inside sent
Dog cloth feed amount is more than outer feed dog cloth feed amount, sews and the effect of stretching is produced to cloth.
Referring to Figure 13：" synchronization " feeding state, when sliding block is located at outer work feed slide crank groove centre position (Fig. 8), work feed
Axle swing power source simultaneously synchronous with the output of outer cloth feeding crank to interior crank of tooth frame, interior crank of tooth frame is directly connected to interior retainer
Together, the oscillating quantity on feed dog swing in driving, interior retainer is consistent with the oscillating quantity that cloth pushing shaft is exported, and outer retainer is bent
The oscillating quantity of handle passes to the long connecting rod one for connecting outer crank of tooth frame by the long connecting rod two connected on outer cloth feeding crank, so that band
Move outer crank of tooth frame swing, when sliding block be in chute in the middle of, its center apart from outer work feed crank center distance and outer tooth
Frame crank center is equal apart from the distance of long connecting rod one, so that outer cloth feeding crank passes to the oscillating quantity of outer crank of tooth frame not
Become, the cloth feed amount of outer feed dog is constant, and interior feed dog cloth feed amount is consistent with outer feed dog cloth feed amount, is now synchronous feeding.
Referring to Figure 14：" contraction " feeding state, when sliding block is located at outer work feed slide crank groove lower position (Fig. 9), work feed
Axle swing power source simultaneously synchronous with the output of outer cloth feeding crank to interior crank of tooth frame, interior crank of tooth frame is directly connected to interior retainer
Together, the oscillating quantity on feed dog swing in driving, interior retainer is consistent with the oscillating quantity that cloth pushing shaft is exported, and outer retainer
The oscillating quantity of crank passes to the long connecting rod one for connecting outer crank of tooth frame by the long connecting rod two connected on outer cloth feeding crank, so that
The swing of outer crank of tooth frame is driven, because sliding block is in below chute, its center is big apart from the distance of outer work feed crank center
In the distance of outer crank of tooth frame centre distance long connecting rod one, so that outer cloth feeding crank passes to the oscillating quantity of outer crank of tooth frame
Become big, the work feed quantitative change of outer feed dog is big, interior feed dog cloth feed amount is less than outer feed dog cloth feed amount, sewing produces contraction to cloth
Effect.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.
Claims (6)
1. a kind of adjustable lower differential feed mechanism, including cloth feeding mechanism（42）, it is characterised in that：Also include cloth pushing shaft（1）, lift
Last item（43）, needle plate（50）, interior crank of tooth frame（3）, interior retainer（5）, outer crank of tooth frame（8）, outer retainer（10）, outer cloth feeding crank
（17）, long connecting rod one（41）, long connecting rod two（36）, short connecting rod one（39）, short connecting rod two（35）, outer feed lifting fork（47）With interior lift tooth
Fork（44）；
Described interior crank of tooth frame（3）The big cylinder cracked by the integrally formed small column of upper end two and bottom side passes through even
Bar is constituted, and the big cylinder in described bottom side of cracking is respectively perpendicular and is extended with triangle ear, described small column, big cylinder and three
Through hole is respectively arranged with angular ear；
Described outer crank of tooth frame（8）It is one small by the integrally formed small column of upper end two, middle one big cylinder and lower end
Cylinder is connected by connecting rod, and through hole is respectively arranged with described small column and big cylinder；
Described outer cloth feeding crank（17）Including T-shape post, the bigger diameter end of T-shape post, which is arranged with connecting rod, T-shape post, to be set
Have and rectangle chute is provided with through hole, connecting rod（24）, it is additionally provided with and rectangle chute on connecting rod（24）The big hole communicated
Two（25）With small sircle hole two（26）, be provided with the bigger diameter end of T-shape post communicated with through hole step up groove（18）And screw（19）,
The port of the miner diameter end of T-shape post sets back-up ring annular groove（23）, the small column of T-shape post（22）It is close to step surface and is provided with annular groove
（20）, annular groove (20) 150 ° of symmetrical rotary centered on the clamping slot (18) in T " type post great circles；
Described cloth pushing shaft（1）For step cylinder axis, the big face of cylinder is connected with cloth feeding mechanism, is fixed with the big cylinder in left side interior
Crank of tooth frame（3）, described interior crank of tooth frame（3）The small column of top two between be fixed with interior retainer cam pin（4）, it is described
One end of interior retainer (5) be set in crank of tooth frame（3）On interior retainer cam pin (4) in the middle of two roundlet pylons of top,
Described interior retainer（5）Interior feed dog (7) is fixed with the plane one (6) of upper end；Described outer crank of tooth frame (8) is sheathed on outer
On the small column of T " the type posts of cloth feeding crank (17), outer retainer is fixed between two roundlet pylons above outer crank of tooth frame (8)
Cam pin (9), one end of lower section small column and long connecting rod one (41) is hinged；One end of described outer retainer (10) is arranged in outer tooth
Frame crank（8）On outer retainer cam pin (9) in the middle of two roundlet pylons of top, described outer retainer（10）The plane of upper end
Two（11）On be fixed with outer feed dog (12)；The T-shape post of described outer cloth feeding crank (17) is fixed on cloth pushing shaft small column (2)
On, it is provided with sliding block (31), described sliding block in the rectangle chute (24) below outer cloth feeding crank (17)（31）Be shaped as
Square block and cylinder（33）Screw two is provided with the T-shape of composition, described square block（32）, described rectangle slides
Groove（24）And sliding block（31）Pass through regulating bolt（27）Cylinder (33) and long connecting rod two on the right side of connection, described sliding block (31)
(36) one end is connected；The big hole of described limiting plate (13)（15）It is sheathed on outer cloth feeding crank (17) and is arranged at outer retainer
Crank（8）Left side, limiting plate（13）Long slot bore (14) and baseplate of sewing machine (51) on screw three (52) be connected, limiting plate
（13）On small sircle hole (16) on the short pin shaft (37) that is provided through, limiting plate on short pin shaft (37)（13）Outer sheath be provided with
Limiting plate on short connecting rod one (39), short pin shaft (37)（13）Inner sleeve be provided with short connecting rod two (35)；Short connecting rod two (35) it is another
One end, the other end of long connecting rod two (36), the other end of short connecting rod one (39), the other end of long connecting rod one (41) are worn successively
In long pin shaft (34)；
It is connected on the right side of described feed lifting rock shaft (43) with feed mechanism (42), left side is fixed with interior feed lifting fork (44) and outer feed lifting fork
(47) inner slide (46), described inner slide (46) and interior retainer (5), are provided with the chute of described interior feed lifting fork (44)
The other end passes through axial screw one（15）It is hinged；Outer slide (49) is provided with described outer feed lifting fork (47) chute, it is described
Outer slide (49) is hinged with outer retainer (10) other end by axial screw two (48).
2. adjustable lower differential feed mechanism according to claim 1, it is characterised in that：Described regulating bolt（27）With
Outer cloth feeding crank（7）Between be provided with locking nut（28）, described chute（24）Interior regulating bolt（28）On be provided with gear
Circle one（30）With pad one（29）.
3. adjustable lower differential feed mechanism according to claim 1 or 2, it is characterised in that：Described long pin shaft（34）
On short connecting rod one (39) and long connecting rod one (41) between be provided with cushion block one（40）, the long pin shaft on the outside of long connecting rod one (41)
（34）It is disposed with pad two (53) and back-up ring two (54).
4. adjustable lower differential feed mechanism according to claim 3, it is characterised in that：Outer crank of tooth frame（8）And interior tooth
Frame crank（3）Between be provided with back-up ring one（38）.
5. adjustable lower differential feed mechanism according to claim 4, it is characterised in that：Described interior work feed（7）With it is outer
Feed dog（12）Feed dog be arranged at needle plate（50）Needle plate slot in.
6. adjustable lower differential feed mechanism according to claim 5, it is characterised in that：Described steps up groove（18）Groove
A width of 1.2mm, annular groove（20）It is wide for 1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710484290.5A CN107245814B (en) | 2017-06-23 | 2017-06-23 | Adjustable lower differential feeding mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710484290.5A CN107245814B (en) | 2017-06-23 | 2017-06-23 | Adjustable lower differential feeding mechanism |
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| Publication Number | Publication Date |
|---|---|
| CN107245814A true CN107245814A (en) | 2017-10-13 |
| CN107245814B CN107245814B (en) | 2023-03-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710484290.5A Active CN107245814B (en) | 2017-06-23 | 2017-06-23 | Adjustable lower differential feeding mechanism |
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| Country | Link |
|---|---|
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201236268Y (en) * | 2008-07-25 | 2009-05-13 | 中国标准缝纫机公司上海惠工缝纫机三厂 | Motor direct drive type under differential sewing machine |
| JP2016185259A (en) * | 2015-03-27 | 2016-10-27 | ペガサスミシン製造株式会社 | Differential feed adjustment mechanism for feed-off-arm type sewing machine |
-
2017
- 2017-06-23 CN CN201710484290.5A patent/CN107245814B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201236268Y (en) * | 2008-07-25 | 2009-05-13 | 中国标准缝纫机公司上海惠工缝纫机三厂 | Motor direct drive type under differential sewing machine |
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