CN106436073A - Bottom and upper thread shearing structure of sewing machine - Google Patents
Bottom and upper thread shearing structure of sewing machine Download PDFInfo
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- CN106436073A CN106436073A CN201611075521.9A CN201611075521A CN106436073A CN 106436073 A CN106436073 A CN 106436073A CN 201611075521 A CN201611075521 A CN 201611075521A CN 106436073 A CN106436073 A CN 106436073A
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- thread trimmer
- sewing machine
- line
- lower thread
- groove
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B65/00—Devices for severing the needle or lower thread
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- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The invention provides a bottom and upper thread shearing structure of a sewing machine and belongs to the technical field of sewing machines. The technical problem that bottom threads and upper threads obtained through the bottom and upper thread shearing structure of an existing sewing machine are still long and the like is solved. The sewing machine comprises a rack and a needle plate, wherein a knife holder is fixed to the lower plate face of the needle plate, and a guiding through groove is formed in the knife holder. The thread shearing structure comprises a lower thread shearing knife and an upper thread shearing knife, the lower thread shearing knife is arranged in the guiding through groove and is sequentially provided with a lower cutting edge and a thread hooking groove from front end to rear end, a driving source I making the lower thread shearing knife to move along the guiding through groove back and forth is arranged on the rack, the upper thread shearing knife is arranged in the guiding through groove, and a driving source II making the upper thread shearing knife to move along the guiding through groove back and forth is arranged on the rack. The bottom and upper thread shearing structure has the advantages that thread residues of bottom threads and upper threads can be short after thread shearing.
Description
Technical field
The invention belongs to sewing machine technique field, it is related to a kind of trimming structure of sewing machine bottom surface line.
Background technology
Bottom line is arranged in the rotating shuttle of sewing machine, by with upper thread intertexture sewing cloth.When being sewn into last pin, face
Line can be in needle plate weaves beneath with bottom line together with, need to cut off the upper thread of weave in and bottom line, during common way
The upper thread of weave in and bottom line pull-out are cut off, but this way can be made the end of a thread of bottom line and upper thread relatively
Long, need to repair the end of a thread of bottom line and upper thread, operation is relatively complicated and less efficient.
In order to solve the above problems, Chinese patent literature discloses high speed embroidery machine bottom surface line thread cutting mechanism simultaneously【Authorize
Notification number CN202500011U】, coordinate the moving knife of trimming including the stationary knife of pin hole side on needle plate and with stationary knife, moving knife sets
Reciprocating action before and after in the moving knife track and by trimming step motor drive, needle plate is additionally provided with a tabletting, and elastic jack-up is moved upwards
Knife makes moving knife blade match with stationary knife blade.This patent passes through moving knife by bottom surface line uncinate gyrus and by between moving knife and stationary knife
Bottom surface line is cut off by cooperation, improves efficiency, but in this patent, the position of stationary knife is fixed, that is, stationary knife is relatively
The position of pin hole is fixing, and in order to ensure being normally carried out of sewing, stationary knife must keep certain distance with pin hole, and moving knife is in hook
Live after the line of bottom surface must the position matched with stationary knife blade to moving knife blade face of rollback, due to stationary knife from the position of pin hole relatively
Far, the displacement of therefore moving knife rollback is also larger, and also farther out, rear bottom line dough-making powder cut off by bottom surface line to cut off pin hole in the position of bottom surface line
The length of line the end of a thread is that the bottom surface line place of cutting off arrives a section being connected with fabric, and therefore bottom line and upper thread the end of a thread is still longer.
Content of the invention
The purpose of the present invention is to there are the problems referred to above for existing technology it is proposed that a kind of trimming of sewing machine bottom surface line
Structure, present invention solves the technical problem that be all to make cutting position in the case of cutting off bottom surface line when ensureing each trimming
Rest against nearly pin hole.
The purpose of the present invention can be realized by following technical proposal：
A kind of trimming structure of sewing machine bottom surface line, sewing machine includes frame and is fixed in frame and has the pin of pin hole
Plate, the lower face of described needle plate is fixed with tool rest, and described tool rest has guide groove, and this trimming structure includes elongated
Lower thread trimmer and front end be provided with the upper thread trimmer of upper knife edge, described lower thread trimmer is arranged in guide groove, described lower trimming
It is sequentially provided with lower cutting edge to the back-end from front end on knife and hooks wire casing, frame is provided with driving source one, and described driving source one can act on
Lower thread trimmer make lower thread trimmer move forward and backward back and forth it is characterised in that thread trimmer is arranged on described along guide groove
In guide groove, described frame is provided with driving source two, and described driving source two can act on and make upper thread trimmer on thread trimmer
Move back and forth along guide groove, when thread trimmer moves forward on described on thread trimmer upper knife edge movement to pin hole, described
The lower cutting edge of lower thread trimmer can be handed over the upper knife edge of the upper thread trimmer being located near pin hole position in lower thread trimmer rollback backward
Wrong.
Concrete operating principle is as follows：On in sewing, thread trimmer and lower thread trimmer are respectively positioned on initial position, now go up trimming
Knife from pin hole position relatively far away from, when being sewn into last pin on thread trimmer and lower thread trimmer move forward, upper thread trimmer to
Before move to relatively close pin hole position when stop moving, lower thread trimmer then continues to move along, and thread trimmer is mobile extremely instantly
Thread trimmer passes through the annular wire loop that bottom line upper thread intertexture is formed at present to hook wire casing position corresponding with pin hole, then descends thread trimmer to stop
Only move forward and return backward, by hook wire casing, bottom surface line is hooked and together retreat with bottom surface line, lower thread trimmer to
When being retracted into the position that lower cutting edge and upper knife edge interlock afterwards, bottom surface line is cut off, and then goes up thread trimmer and lower thread trimmer is return backward
Initial position, completes the trimming action of bottom surface line.
The stub of bottom line and upper thread is by fabric and the decision of the distance between lower blade, because upper thread trimmer can move
Move and make in the trimming relatively close pin hole of blade at present, therefore after trimming, the length of bottom line and upper thread the end of a thread is shorter；Upper thread trimmer
With lower thread trimmer each along guide groove mobile it is ensured that upper thread trimmer and lower thread trimmer mobile route concordance so that on cut
The relative position of line knife and lower thread trimmer stable it is ensured that all bottom surface line can be cut off during each trimming；Thread trimmer in sewing
With the position of lower thread trimmer and pin hole relatively far away from, normal sewing will not be interfered, pass through when needing trimming to move in front and back
Dynamic mode is less near the space taking required for pin hole, trimming, can make the compact conformation of sewing machine.
In the trimming structure of above-mentioned sewing machine bottom surface line, described upper thread trimmer is elongated, described upper thread trimmer
Two sides are reclined with the cell wall of guide groove respectively.The guide groove air flue guide effect when upper thread trimmer moves forward and backward back and forth,
So that upper thread trimmer is mobile stable, and all enable the friendship of lower cutting edge and upper knife edge every time when upper thread trimmer is located at pin hole position
Mistake is thus all can cut off bottom surface line every time.
In the trimming structure of above-mentioned sewing machine bottom surface line, described driving source two is cylinder, the expansion link of described cylinder
On be connected with upper connecting rod, the one side of described tool rest is had the resigning breach being connected with guide groove, described cylinder be located at knife
The side with resigning breach of seat, the side of described upper thread trimmer has the connection protuberance through resigning breach, described connection
Protuberance can move forward and backward in resigning breach, and described upper connecting rod is located at the lower section of resigning breach, and described upper connecting rod passes through bearing pin one
Fix with connection protuberance.
Telescopic-cylinder bar flexible can drive upper connecting rod before and after move back and forth, thus upper thread trimmer can be made logical along guiding
Groove moves forward and backward back and forth, and cylinder can make thread trimmer be positioned at this position when upper thread trimmer mobile extremely close pin hole position
Complete trimming, in realization thread trimmer in trimming relatively close pin hole so that after trimming the length of bottom line and upper thread the end of a thread shorter；
Due to upper thread trimmer, when moving forward and backward back and forth, stroke is fixed, and is therefore once stretched by the expansion link of cylinder and can complete to move
Make, positioned without related sensor by air cylinder driven, saved cost；Cylinder is located at the side of tool rest simultaneously, above cuts
Line knife is connected with cylinder by connection protuberance, compact conformation, can reasonable Arrangement in less space in sewing machine；Driving source one
It can also be oil cylinder.
In the trimming structure of above-mentioned sewing machine bottom surface line, described driving source one is motor, on the bottom surface of described tool rest
Have the pilot hole connecting with guide groove, described pilot hole is elongated, the motor shaft of described motor is connected with crank, institute
State and the lower section that lower pull bar described in lower pull bar is located at tool rest is hinged with the end of crank, described lower thread trimmer is connected with bearing pin
Two, described bearing pin two passes through pilot hole hinged with the end of lower pull bar.Drive crank to swing back and forth by motor and realize lower pull bar
Move back and forth, pilot hole make bearing pin two can only along pilot hole length direction slide, the swing of lower pull bar is defined as
Linear reciprocation moves, and under final realization, thread trimmer is movable；Descend pull bar to be located at the lower section of tool rest, it is to avoid with upper connecting rod simultaneously
The conflict of position, compact conformation, can reasonable Arrangement in less space in sewing machine；Driving source one is alternatively cylinder, cylinder
Expansion link be connected with the rear end of lower thread trimmer and direct drive lower thread trimmer to move forward and backward.
In the trimming structure of above-mentioned sewing machine bottom surface line, described upper thread trimmer has the spacing hole of bar shaped, described
The upper end of bearing pin two is located at spacing in the hole and can be reclined with the inwall of spacing hole.This structure ensures that upper thread trimmer and lower thread trimmer exist
When mobile all the time up and down distribution it is ensured that the concordance of upper thread trimmer and lower thread trimmer mobile route, it is to avoid inclination and offset occurs and leads
Cause cannot be by the situation of bottom surface line cut-out it is ensured that all can cut off bottom surface line during each trimming.
In the trimming structure of above-mentioned sewing machine bottom surface line, described lower thread trimmer has elongated resigning recessed
Groove, described resigning groove connects along the length direction distribution of lower thread trimmer, the rear end of described resigning groove with hooking wire casing.Hooking line
Groove descends thread trimmer to return backward after hooking bottom surface line, and upper knife edge can be pressed on the line of bottom surface so that bottom surface line falls in the process
In resigning groove, it is to avoid the position of bottom surface line cheaply goes out lower thread trimmer.
In the trimming structure of above-mentioned sewing machine bottom surface line, the upper side of described lower thread trimmer has one section of guiding tiltedly
Face, described guiding surface is arranged to the back-end obliquely from the front end of lower thread trimmer, and above-mentioned resigning groove is opened on guiding surface,
On described guiding surface, relatively eminence has inclined hole, and the front end of described resigning groove is connected with inclined hole, the hole wall of described inclined hole
Form lower cutting edge with the intersection of guiding surface, between the axis of described inclined hole and guiding surface, angle is acute angle, described upper slitter
The cutting edge of sword can be interlocked with lower cutting edge.Lower thread trimmer is front end near one end of pin hole, and the one end away from pin hole is rear end.This knot
Structure make angle between the hole wall of inclined hole and guiding surface be acute angle so that lower cutting edge is sharper, instantly thread trimmer movement supreme
When the cutting edge of blade and lower cutting edge interlock, bottom surface line is cut off, it is to avoid occur pullling the situation of bottom surface line it is ensured that during each trimming
All bottom surface line can be cut off and make the end of bottom line and upper thread the end of a thread neat.
In the trimming structure of above-mentioned sewing machine bottom surface line, described lower thread trimmer is located at the width hooking a section in front of wire casing
Degree is gradually reduced from the rear end forward end of lower thread trimmer.This structure when lower thread trimmer moves forward every time all can pass through bottom line and
Upper thread interweaves the wire loop being formed so that bottom surface line all can fall in hook wire casing every time.
In the trimming structure of above-mentioned sewing machine bottom surface line, described upper thread trimmer also includes the upper slitter in strip lamellar
Seat, above-mentioned upper knife edge is located at the front end of upper cutter head and relatively upper cutter head is downwardly convex, in leading of described upper knife edge and lower thread trimmer
To inclined-plane relative to when upper knife edge all the time with guiding surface against having slot to make way on the downside of described needle plate, described slot to make way
Elongated and slot to make way is oppositely arranged with the front end of upper cutter head, and one end of described slot to make way is near pin hole.Connection protuberance is located at
The stage casing of upper cutter head, the upper cutter head in strip lamellar has elasticity, therefore can enable upper knife edge all the time with guiding surface against,
In lower thread trimmer rollback backward due to upper knife edge all the time with guiding surface against as long as therefore upper knife edge movement is to lower cutting edge position
When putting, the cutting edge of upper knife edge will necessarily be interlocked with lower cutting edge and cut off bottom surface line；Slot to make way can accommodate the upper cutter head being upturned
Front end, the position of slot to make way ensures that bottom surface line can cut off so that bottom line after trimming by upper thread trimmer from the position close to pin hole
Shorter with the length of upper thread the end of a thread.
In the trimming structure of above-mentioned sewing machine bottom surface line, described lower thread trimmer offers the one side hooking wire casing and leads
To between inclined-plane, there is fillet surface.Fillet surface can increase the angle of edge, it is to avoid bottom surface line because with lower thread trimmer relative movement
Cut off；Fillet surface can reduce the width of guiding surface simultaneously, therefore upper knife edge and guiding surface against and during relative movement
Reduce friction so that lower thread trimmer and upper thread trimmer relative movement are more smooth.
Compared with prior art, the trimming structure of this sewing machine bottom surface line has and can make bottom line and upper thread line after trimming
The shorter advantage of length of head.
Brief description
Fig. 1 is the perspective view of the trimming structure of this sewing machine bottom surface line.
Fig. 2 is that the trimming structure of this sewing machine bottom surface line removes the present invention looks up structural representation after frame.
Fig. 3 is that the trimming structure of this sewing machine bottom surface line removes the perspective view after frame and needle plate.
Fig. 4 is upper thread trimmer and lower thread trimmer cutaway view Amplified image with needle plate position relationship in initial position.
Fig. 5 is the cutaway view Amplified image after upper thread trimmer and lower thread trimmer synchronously move forward with needle plate position relationship.
Fig. 6 is upper thread trimmer and lower thread trimmer is located to cut off and is amplified with the section view of needle plate position relationship during the line position of bottom surface
Figure.
Fig. 7 is the perspective view of tool rest.
Fig. 8 is the positive structure diagram of lower thread trimmer.
Fig. 9 is the perspective view of lower thread trimmer.
Figure 10 is the enlarged drawing after the A-A section view along along Fig. 8.
Figure 11 is the perspective view of upper thread trimmer.
Figure 12 is the partial enlarged drawing of upper thread trimmer.
In figure, 1, frame；2nd, needle plate；21st, pin hole；22nd, slot to make way；3rd, tool rest；31st, guide groove；32nd, resigning breach；
33rd, pilot hole；4th, upper thread trimmer；41st, upper cutter head；42nd, upper knife edge；43rd, spacing hole；44th, connection protuberance；5th, lower thread trimmer；51、
Hook wire casing；53rd, resigning groove；54th, guiding surface；55th, fillet surface；56th, inclined hole；57th, lower cutting edge；6th, cylinder；61st, upper connecting rod；
62nd, bearing pin one；7th, motor；71st, crank；72nd, lower pull bar；73rd, sensor；74th, isolation；75th, bearing pin two；8th, bottom surface line.
Specific embodiment
The following is the specific embodiment of the present invention and combine accompanying drawing, technical scheme is further described,
But the present invention is not limited to these embodiments.
As shown in Fig. 1 to Fig. 3 and Fig. 7, sewing machine includes frame 1 and the needle plate being fixed in frame 1 and having pin hole 21
2, the lower face of needle plate 2 is fixed with tool rest 3, tool rest 3 has guide groove 31, the trimming structure of background upper thread is included in length
The lower thread trimmer 5 of bar shaped and front end are provided with the upper thread trimmer 4 of upper knife edge 42, and lower thread trimmer 5 is arranged in guide groove 31, under cut
It is sequentially provided with lower cutting edge 57 to the back-end from front end on line knife 5 and hooks wire casing 51, frame 1 is provided with driving source one, driving source one energy
Act on so that lower thread trimmer 5 moves forward and backward back and forth along guide groove 31 on lower thread trimmer 5, upper thread trimmer 4 is elongated, above cuts
Line knife 4 is arranged in guide groove 31, and the two sides of upper thread trimmer 4 are reclined with the cell wall of guide groove 31 respectively.Described frame 1
It is provided with driving source two, driving source two can act on thread trimmer 4 so that upper thread trimmer 4 to move back along guide groove 31
Dynamic, when upper thread trimmer 4 moves forward on thread trimmer 4 upper knife edge 42 movement to pin hole 21, lower cutting edge 57 energy of lower thread trimmer 5
Interlock with the upper knife edge 42 of the upper thread trimmer 4 being located near pin hole 21 position in lower thread trimmer 5 rollback backward.
As shown in Fig. 1 to Fig. 3 and Fig. 7, driving source two is cylinder 6, and the expansion link of described cylinder 6 is connected with upper connecting rod
61, the one side of described tool rest 3 is had the resigning breach 32 being connected with guide groove 31, described cylinder 6 is located at the tool of tool rest 3
There is the side of resigning breach 32, the side of described upper thread trimmer 4 has the connection protuberance 44 through resigning breach 32, described connection
Protuberance 44 can move forward and backward in resigning breach 32, and described upper connecting rod 61 is located at the lower section of resigning breach 32, described upper connecting rod 61
Fixing with connection protuberance 44 by bearing pin 1.
As shown in Figure 1 to Figure 3, described driving source one is motor 7, and the bottom surface of described tool rest 3 has and guide groove 31
The pilot hole 33 of connection, described pilot hole 33 is elongated, and the motor shaft of described motor 7 is connected with crank 71, described crank
Lower pull bar 72 is hinged with 71 end, described lower pull bar 72 is located at the lower section of tool rest 3, and described lower thread trimmer 5 is connected with pin
Axle 2 75, described bearing pin 2 75 passes through pilot hole 33 hinged with the end of lower pull bar 72.Lower pull bar 72 is located at the lower section of tool rest 3,
Avoid and the conflicting of upper connecting rod 61 position, can reasonable Arrangement in less space in sewing machine.The both sides of motor 7 are additionally provided with two
Individual sensor 73, two sensors 73 are located at the both sides of motor 7 respectively, and one end that crank 71 is connected with motor shaft is provided with sector
Isolation 74, when crank 71 swings, the two ends of isolation 74 can be respectively with the effect of two sensors 73 and trigger sensors
73, sensor 73 can send a signal to controller the rotation direction by controller controlled motor 7 and angle after being triggered, and comes real
The now moving direction of thread trimmer 5 and displacement.The spacing hole 43 of bar shaped is had on upper thread trimmer 4, the upper end of bearing pin 2 75 is located at
Spacing hole 43 is interior and can recline with the inwall of spacing hole 43.
As shown in Figures 8 to 10, lower thread trimmer 5 is elongated, and lower thread trimmer 5 is located at the width hooking one section of wire casing 51 front
It is gradually reduced from the rear end forward end of lower thread trimmer 5.Elongated resigning groove 53, resigning groove are had on lower thread trimmer 5
53 along lower thread trimmer 5 length direction distribution, the rear end of resigning groove 53 with hook wire casing 51 connect.Hooking wire casing 51 by bottom surface line
8 hook after lower thread trimmer 5 return backward, upper knife edge 42 can be pressed on bottom surface line 8 so that bottom surface line 8 falls is stepping down in the process
In groove 53.The upper side of lower thread trimmer 5 has one section of guiding surface 54, and guiding surface 54 is from the front end of lower thread trimmer 5 backward
End is arranged obliquely, and lower thread trimmer 5 offers has fillet surface 55 between the one side hooking wire casing 51 and guiding surface 54.Step down
Groove 53 is opened on guiding surface 54, and on guiding surface 54, relatively eminence has an inclined hole 56, the front end of resigning groove 53 with
Inclined hole 56 connects, and the intersection of the hole wall of inclined hole 56 and guiding surface 54 forms lower cutting edge 57, and the axis of inclined hole 56 is with guiding tiltedly
Between face 54, angle is acute angle, and the cutting edge of upper knife edge 42 can be interlocked with lower cutting edge 57, preferably, the hole wall of inclined hole 56 and guiding
Between inclined-plane 54, angle is 65 ° or 75 ° or 85 °.
As is illustrated by figs. 11 and 12, upper thread trimmer 4 also includes the upper cutter head 41 in strip lamellar, and upper knife edge 42 is located at upper slitter
The front end of seat 41 and relatively upper cutter head 41 are downwardly convex, the upper slitter when the guiding surface 54 of upper knife edge 42 and lower thread trimmer 5 is relative
Sword 42 all the time with guiding surface 54 against slot to make way 22 being had on the downside of needle plate 2, slot to make way 22 is elongated and slot to make way
22 are oppositely arranged with the front end of upper cutter head 41, and one end of slot to make way 22 is near pin hole 21.Connection protuberance 44 is located at upper cutter head 41
Stage casing, the upper cutter head 41 in strip lamellar has elasticity, therefore can enable upper knife edge 42 all the time with guiding surface 54 against,
Lower thread trimmer 5 backward rollback when due to upper knife edge 42 all the time with guiding surface 54 against, as long as therefore upper knife edge 42 mobile to allowing
During the blind end of position groove 53, the cutting edge of upper knife edge 42 will necessarily be interlocked with lower cutting edge 57 and cut off bottom surface line 8.
As shown in Figures 4 to 6, concrete operating principle is as follows：On in sewing, thread trimmer 4 and lower thread trimmer 5 are respectively positioned on just
Beginning position, when being sewn into last pin on thread trimmer 4 and lower thread trimmer 5 move forward simultaneously, upper thread trimmer 4 moves forward to
Stop during the position of relatively close pin hole 21 moving, lower thread trimmer 5 then continues to move along, thread trimmer 5 is mobile instantly extremely hooks line
At present thread trimmer 5 passes through the annular wire loop that bottom line and upper thread intertexture are formed for groove 51 position corresponding with pin hole 21, then descends trimming
Knife 5 stops and returns backward, is hooked bottom surface line 8 by hook wire casing 51 and together retreats with bottom surface line 8, in lower thread trimmer 5
When being retracted into setting position backward, bottom surface line 8 is located between upper knife edge 42 and lower thread trimmer 5, and now upper knife edge 42 is by bottom surface line 8
Cut off, then go up thread trimmer 4 and lower thread trimmer 5 returns initial position backward, complete the trimming action of bottom surface line 8.
Specific embodiment described herein is only explanation for example to present invention spirit.The affiliated technology of the present invention is led
The technical staff in domain can be made various modifications or supplement or replaced using similar mode to described specific embodiment
Generation, but the spirit without departing from the present invention or surmount scope defined in appended claims.
Claims (10)
1. the trimming structure of a kind of sewing machine bottom surface line, sewing machine includes frame (1) and is fixed on frame (1) above and has pin hole
(21) needle plate (2), the lower face of described needle plate (2) is fixed with tool rest (3), described tool rest (3) has guide groove
(31), this trimming structure includes elongated lower thread trimmer (5) and front end is provided with the upper thread trimmer (4) of upper knife edge (42), institute
State lower thread trimmer (5) to be arranged in guide groove (31), described lower thread trimmer (5) is sequentially provided with lower cutting edge to the back-end from front end
(57) and hook wire casing (51), frame (1) is provided with driving source one, and described driving source one can act on that lower thread trimmer (5) is upper to be made
Lower thread trimmer (5) move forward and backward back and forth along guide groove (31) it is characterised in that described upper thread trimmer (4) to be arranged on guiding logical
In groove (31), described frame (1) is provided with driving source two, described driving source two can act on thread trimmer (4) upper so that on cut
Line knife (4) moves back and forth along guide groove (31), the upper slitter of upper thread trimmer (4) when thread trimmer (4) moves forward on described
Sword (42) mobile to pin hole (21), the lower cutting edge (57) of described lower thread trimmer (5) can be in lower thread trimmer (5) rollback backward and position
Upper knife edge (42) in the upper thread trimmer (4) near pin hole (21) position interlocks.
2. the trimming structure of sewing machine bottom surface according to claim 1 line is it is characterised in that described upper thread trimmer (4) is in
Strip, the two sides of described upper thread trimmer (4) are reclined with the cell wall of guide groove (31) respectively.
3. the trimming structure of sewing machine bottom surface according to claim 1 line is it is characterised in that described driving source two is cylinder
(6), the expansion link of described cylinder (6) is connected with upper connecting rod (61), the one side of described tool rest (3) has and guide groove
(31) the resigning breach (32) connecting, described cylinder (6) be located at tool rest (3) the side with resigning breach (32), described on
The side of thread trimmer (4) has the connection protuberance (44) through resigning breach (32), and described connection protuberance (44) can lack stepping down
Movable in mouth (32), described upper connecting rod (61) is located at the lower section of resigning breach (32), and described upper connecting rod (61) passes through bearing pin
One (62) is fixing with connection protuberance (44).
4. the trimming structure of the sewing machine bottom surface line according to claim 1 or 2 or 3 is it is characterised in that described driving source one
For motor (7), the bottom surface of described tool rest (3) is had the pilot hole (33) being connected with guide groove (31), described pilot hole
(33) elongated, the motor shaft of described motor (7) is connected with crank (71), the end of described crank (71) is hinged with down
Pull bar (72), described lower pull bar (72) is located at the lower section of tool rest (3), and described lower thread trimmer (5) is connected with bearing pin two (75), institute
Stating bearing pin two (75) passes through pilot hole (33) hinged with the end of lower pull bar (72).
5. the trimming structure of sewing machine bottom surface according to claim 4 line is it is characterised in that on described upper thread trimmer (4)
Have the spacing hole (43) of bar shaped, the upper end of described bearing pin two (75) is located in spacing hole (43) and can be interior with spacing hole (43)
Wall reclines.
6. the trimming structure of the sewing machine bottom surface line according to claim 1 or 2 or 3 is it is characterised in that described lower thread trimmer
(5) have elongated resigning groove (53) on, described resigning groove (53) is distributed along the length direction of lower thread trimmer (5),
The rear end of described resigning groove (53) connects with hooking wire casing (51).
7. the trimming structure of sewing machine bottom surface according to claim 6 line is it is characterised in that described lower thread trimmer (5)
Upper side has one section of guiding surface (54), and described guiding surface (54) is divided into from the front end of lower thread trimmer (5) is oblique to the back-end
Put, above-mentioned resigning groove (53) is opened on guiding surface (54), on described guiding surface (54), relatively eminence has inclined hole
(56), the front end of described resigning groove (53) is connected with inclined hole (56), the hole wall of described inclined hole (56) and guiding surface (54)
Intersection forms lower cutting edge (57), and between the axis of described inclined hole (56) and guiding surface (54), angle is acute angle, described upper slitter
The cutting edge of sword (42) can be interlocked with lower cutting edge (57).
8. the trimming structure of sewing machine bottom surface according to claim 7 line is it is characterised in that described lower thread trimmer (5) is opened
It is provided with, between the one side hooking wire casing (51) and guiding surface (54), there is fillet surface (55).
9. the trimming structure of sewing machine bottom surface according to claim 7 line is it is characterised in that described upper thread trimmer (4) is gone back
Including the upper cutter head (41) in strip lamellar, above-mentioned upper knife edge (42) is located at the front end of upper cutter head (41) and relative upper cutter head (41)
Downwardly convex, when described upper knife edge (42) is relative with the guiding surface (54) of lower thread trimmer (5) upper knife edge (42) all the time with lead
To inclined-plane (54) against slot to make way (22) being had on the downside of described needle plate (2), described slot to make way (22) is elongated and allows
Position groove (22) is oppositely arranged with the front end of upper cutter head (41), and one end of described slot to make way (22) is near pin hole (21).
10. the trimming structure of the sewing machine bottom surface line according to claim 1 or 2 or 3 is it is characterised in that described lower trimming
The upper width being located at a section in front of hook wire casing (51) of knife (5) is gradually reduced from the rear end forward end of lower thread trimmer (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611075521.9A CN106436073B (en) | 2016-11-29 | 2016-11-29 | Thread cutting structure of bottom thread of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611075521.9A CN106436073B (en) | 2016-11-29 | 2016-11-29 | Thread cutting structure of bottom thread of sewing machine |
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| Publication Number | Publication Date |
|---|---|
| CN106436073A true CN106436073A (en) | 2017-02-22 |
| CN106436073B CN106436073B (en) | 2023-02-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201611075521.9A Active CN106436073B (en) | 2016-11-29 | 2016-11-29 | Thread cutting structure of bottom thread of sewing machine |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN109629132A (en) * | 2019-02-27 | 2019-04-16 | 杰克缝纫机股份有限公司 | A kind of thread cutting mechanism on sewing machine |
| CN111020903A (en) * | 2019-12-17 | 2020-04-17 | 杰克缝纫机股份有限公司 | Seam-making thread trimming mechanism and method thereof |
| CN112323274A (en) * | 2020-11-21 | 2021-02-05 | 吴江市震宇缝制设备有限公司 | Protective clothing production is with sewing machine thread trimming mechanism |
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| CN107938192A (en) * | 2017-12-26 | 2018-04-20 | 方琳 | Cut the control method of bottom line device, sewing machine and sewing machine |
| CN108130661A (en) * | 2017-12-26 | 2018-06-08 | 方琳 | The control method of section line apparatus, sewing machine and sewing machine |
| CN108118468A (en) * | 2018-01-30 | 2018-06-05 | 强信机械科技(莱州)有限公司 | A kind of electric heating tangent line movable blade and include its sewing machine |
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| CN109629132A (en) * | 2019-02-27 | 2019-04-16 | 杰克缝纫机股份有限公司 | A kind of thread cutting mechanism on sewing machine |
| CN109629132B (en) * | 2019-02-27 | 2020-12-29 | 杰克缝纫机股份有限公司 | Thread trimming mechanism on sewing machine |
| CN111020903A (en) * | 2019-12-17 | 2020-04-17 | 杰克缝纫机股份有限公司 | Seam-making thread trimming mechanism and method thereof |
| CN111020903B (en) * | 2019-12-17 | 2021-08-24 | 杰克缝纫机股份有限公司 | Seam-making thread trimming mechanism and method thereof |
| CN112323274A (en) * | 2020-11-21 | 2021-02-05 | 吴江市震宇缝制设备有限公司 | Protective clothing production is with sewing machine thread trimming mechanism |
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Effective date of registration: 20200925 Address after: 198 Xinggang East Road, Damaiyu street, Yuhuan City, Taizhou City, Zhejiang Province Applicant after: ZOJE SEWING MACHINE Co.,Ltd. Address before: 317604, Taizhou, Zhejiang province Yuhuan County barley island Street Hing Tung Road, No. 198 Applicant before: ZOJE SEWING MACHINE Co.,Ltd. Applicant before: ZHEJIANG JOYEE SEWING MACHINE Co.,Ltd. Applicant before: ZHEJIANG BSM SEWING MACHINE Co.,Ltd. |
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