CN105780326B - The trimming driving mechanism and sewing machine of use in sewing machine - Google Patents
The trimming driving mechanism and sewing machine of use in sewing machine Download PDFInfo
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- CN105780326B CN105780326B CN201610339727.1A CN201610339727A CN105780326B CN 105780326 B CN105780326 B CN 105780326B CN 201610339727 A CN201610339727 A CN 201610339727A CN 105780326 B CN105780326 B CN 105780326B
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- trimming
- cam
- sewing machine
- drive
- scissors
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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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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The present invention provides a kind of the trimming driving mechanism and sewing machine of use in sewing machine, and trimming driving mechanism includes：It drive shaft and is placed in drive shaft with the translation cam of drive shaft turns, oscillating cam and lower trimming cam；Drive block and the translation cam contact in upper scissors transmission component；Compression bar is extended at the oscillating cam；Lower scissors transmission component, including drive block, rotation axis, rocking bar and the lower scissors connecting rod being sequentially connected, lower scissors connecting rod is connected with lower trimming component, the drive block and lower trimming cam contact, rotation axis is driven to rotate by drive block during lower trimming cam rotation, and then lower trimming component completion is driven to close by rocking bar, lower scissors connecting rod and cut and cut across.The configuration of the present invention is simple is easily installed and adjusts, and entire trimming driving mechanism can be made to be installed on inside sewing machine, simplifies the overall structure of sewing machine.
Description
Technical field
The present invention relates to sewing machine trimming technical field, more particularly to the trimming driving mechanism of use in sewing machine and sewing
Machine.
Background technology
Sewing machine internal structure is complicated, is related to the matching of a variety of transmissions, in addition to the control of presser foot lifter, needle gage, eedle etc., goes back
Including the trimming function of cutting suture on eedle.Driving device used by existing flat cutter thread cutting mechanism up and down, generally all
It is multigroup four-bar mechanism driving, structure is more too fat to move, and debugging is also more difficult.It, can only be by these and since bar group part is more
Part is external, also influences the beauty of complete machine.
Chinese patent ZL201520709337.X discloses a kind of thread cutting mechanism of flat seam machine, including presser feet fixed seat,
Mounted on the lower part of the presser foot lifter guide rod of head of sewing machine；Anchoring is mounted in presser feet fixed seat and for clamping seam
That threads reaches the standard grade；Stationary knife is fixedly mounted on the front side of presser feet fixed seat, cutting edge I is provided on stationary knife；Moving knife, rotation peace
Cutting edge II is provided in presser feet fixed seat, on front side of moving knife, when moving knife deflects to certain position, the cutting edge II of moving knife is fixed
Sliding and trimming on the cutting edge I of knife；Drive system is arranged in presser feet fixed seat, and stationary knife is driven to swing back and forth.This practicality
It is novel to only provide a kind of thread cutting mechanism of energy finished surface line shearing.
Therefore a kind of simple structure, trimming driving easy for installation, being suitble to built-in completion upper thread and baseline cutting are needed
Mechanism.
Invention content
In view of the foregoing deficiencies of prior art, the purpose of the present invention is to provide a kind of drivings of the trimming of use in sewing machine
Mechanism and sewing machine, for solving the problems, such as that thread cutting mechanism is complicated in the prior art, installation need are external.
In order to achieve the above objects and other related objects, the present invention provides a kind of trimming driving mechanism of use in sewing machine, institute
Trimming driving mechanism is stated to include：Drive shaft and be placed in drive shaft with the translation cam of drive shaft turns, oscillating cam and under
Trimming cam；Upper scissors transmission component, including the drive block, drive link and scissors retainer being sequentially connected, the scissors is protected
Frame to be held with upper thread cutting assemblies to be connected, the drive link is threaded through in rotating member, the drive block and the translation cam contact,
The drive block, drive link horizontal movement are pushed during translation cam rotation, upper thread cutting assemblies is made to move forward or back certain distance；
The side of the drive block is equipped with compression bar, and compression bar is extended at the oscillating cam, can pressure described in bruising when oscillating cam rotates
Bar and drive link is made to do lever motion, and then scissors retainer is made to move up and down to complete trimming；And upper scissors transmission component
Further include the first resetting-mechanism for making to reset after drive link horizontal movement and make scissors retainer move up and down after reset second
Resetting-mechanism；
Lower scissors transmission component, including drive block, rotation axis, rocking bar and the lower scissors connecting rod being sequentially connected, lower scissors connect
Bar is connected with lower trimming component, and the drive block and lower trimming cam contact, lower trimming cam are driven when rotating by drive block
Rotation axis rotates, and then lower trimming component completion is driven to close by rocking bar, lower scissors connecting rod and cut and cut across；And the lower scissors pass
Dynamic component further includes the third resetting-mechanism for making driving block reset.
Preferably, the drive shaft is connected with driving motor.
Preferably, the lower trimming cam is placed between the translation cam and the oscillating cam, and the drive block is put
In the lower section of the lower trimming cam, the drive block is placed in the side of the translation cam, and the compression bar extends to the pendulum
The lower section of moving cam.
Preferably, the third resetting-mechanism is the compressed spring below the drive block.
Preferably, first resetting-mechanism is the resetting spring being threaded through on the drive link, the both ends of resetting spring
It contradicts respectively on the drive block and the rotating member.
Preferably, second resetting-mechanism is a tension spring, and one end of tension spring is connected with the scissors retainer, tension spring
Other end positioning is motionless.
Preferably, the top of one end that the drive link is connected with the scissors retainer is equipped with spacer pin.
Preferably, the side of one end that the drive link is connected with the scissors retainer, which is equipped with, to be vertically arranged and for cutting
The guide plate that knife retainer is oriented to when moving up and down.
Preferably, the end of the rotation axis is fixed with fixed block, and fixed block is equipped with groove, the side of the drive block
Extend outwardly a convex block, and the convex block, which is stretched into the groove, is connected the drive block with the rotation axis.
The present invention also provides a kind of sewing machine, the sewing machine uses the trimming driving mechanism of use in sewing machine as described above
Complete the shearing of upper thread and baseline.
As described above, the trimming driving mechanism and sewing machine of the use in sewing machine of the present invention, have the advantages that：Using
Drive shaft drives three cams simultaneously, and three cams drive upper thread cutting assemblies and lower trimming component finished surface line and bottom respectively
The shearing of line need to only set the protrusion movement travel of three cams, you can complete the realization time of each function, of the invention cuts
Line driving mechanism structure is simple, is easily installed and adjusts, and entire trimming driving mechanism can be made to be installed on inside sewing machine, simplifies seam
It threads the overall structure of machine.
Description of the drawings
Fig. 1 is shown as the trimming driving mechanism schematic diagram of the use in sewing machine of the present invention.
Fig. 2 is shown as the structure diagram of the upper scissors transmission component of the present invention.
Fig. 3 is shown as the structure diagram of the lower scissors transmission component of the present invention.
Component label instructions
1 driving motor
2 drive shafts
21 translation cams
22 times trimming cams
23 oscillating cams
3 drive blocks
31 compression bars
4 drive links
5 scissors retainers
6 upper thread cutting assemblies
7 rotation axis
71 fixed blocks
8 lower scissors connecting rods
9 drive blocks
91 convex blocks
10 spacer pins
11 tension springs
12 resetting springs
13 compressed springs
14 rotating members
15 rocking bars
16 guide plates
Specific embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation
Content disclosed by book understands other advantages and effect of the present invention easily.
It please refers to Fig.1 to Fig.3.It should be clear that structure, ratio, size depicted in this specification institute attached drawing etc., only to
Coordinate the revealed content of specification, so that those skilled in the art understands and reads, being not limited to the present invention can be real
The qualifications applied, therefore do not have technical essential meaning, the tune of the modification of any structure, the change of proportionate relationship or size
It is whole, in the case where not influencing the effect of present invention can be generated and the purpose that can reach, should all still fall in disclosed skill
In the range of art content can cover.Meanwhile in this specification it is cited as " on ", " under ", "left", "right", " centre " and
The term of " one " etc. is merely convenient to understanding rather than to limit the enforceable range of the present invention for narration, relativeness
It is altered or modified, in the case where changing technology contents without essence, when being also considered as the enforceable scope of the present invention.
As shown in Figure 1, Figure 2 and Figure 3, the present invention provides a kind of trimming driving mechanism of use in sewing machine, the trimming driving
Mechanism includes：Drive shaft 2 and it is placed in the translation cam 21 rotated in drive shaft 2 with drive shaft 2, oscillating cam 23 and lower trimming
Cam 22；Upper scissors transmission component, including the drive block 3, drive link 4 and scissors retainer 5 being sequentially connected, the scissors is protected
It holds frame 5 with upper thread cutting assemblies 6 to be connected, the drive link 3 is threaded through in rotating member 14, and the drive block 3 and the translation are convex
23 contact of wheel, translation cam 23 push the drive block 3,4 horizontal movement of drive link when rotating, upper thread cutting assemblies 6 are made to advance
Or retreat certain distance；The side of the drive block 3 is equipped with compression bar 31, and compression bar 31 is extended at the oscillating cam 21, swings
Cam 21 bruising compression bar 31 and can make drive link 4 do lever motion (as the fulcrum of lever at rotating member 14) when rotating, into
And scissors retainer 5 is made to move up and down to complete trimming；And upper scissors transmission component is further included after making 4 horizontal movement of drive link and is answered
First resetting-mechanism of position and the second resetting-mechanism that scissors retainer 5 is made to be resetted after moving up and down；
Lower scissors transmission component, including drive block 9, rotation axis 7, rocking bar 15 and the lower scissors connecting rod 8 being sequentially connected, under cut
Knife connecting rod 8 is connected with lower trimming component, and drive block 9 is contacted with lower trimming cam 22, and lower trimming cam 22 passes through driving when rotating
Block 9 drives rotation axis 7 to rotate, and then lower trimming component completion is driven to close by rocking bar 15, lower scissors connecting rod 8 and cut and cut across；And
The lower scissors transmission component further includes the third resetting-mechanism for resetting drive block 9.
The present invention drives three cams simultaneously using drive shaft, and three cams drive upper thread cutting assemblies to be cut under respectively
Line component completes the shearing of upper thread and baseline, need to only set the protrusion movement travel of three cams, you can complete each function
Realize the time, trimming driving mechanism structure of the invention is simple, is easily installed and adjusts, and can install entire trimming driving mechanism
Inside sewing machine, simplify the overall structure of sewing machine.
Above-mentioned drive shaft 2 in the present embodiment is connected with driving motor 1, is driven by individual driving motor 1.The present invention's
Drive shaft 2 can be also connected by transmission mechanism with other driving mechanisms, is not described in detail here.
Above-mentioned lower trimming cam 22 in the present embodiment is placed between the translation cam 21 and the oscillating cam 23, institute
The lower section that drive block 9 is placed in the lower trimming cam 22 is stated, the drive block 3 is placed in the side of the translation cam 21, described
Compression bar 31 extends to the lower section of the oscillating cam 23.Lower trimming cam 22 is placed in the present embodiment and completes upper trimming driving
It is translatable between cam 21 and oscillating cam 23, and by the cam curve of reasonable design, suitable movement travel can be obtained,
Simultaneously under the control of same drive shaft, upper thread cutting assemblies is made to move forward or back a certain distance in the correct time, under making
Cutting assemblies complete baseline shearing.Lower trimming cam is placed in centre, is to preferably set other transmission mechanisms, such as drives
The setting of block, drive block and compression bar, the present invention in three cams installation position it is without being limited thereto or other sequence.
Scissors transmission component and lower trimming transmission component is detailed below, as shown in Fig. 2 and Fig. 3.
As shown in Fig. 2, the drive block 3 in upper scissors transmission component is mounted on the end of drive link 4, drive link 3 is threaded through
In rotating member 14, concretely an axle sleeve, the both ends of axle sleeve are placed in bearing rotating member 14, make rotating member 14 as drive link
Balance pivot makees lever motion；One side contacts of drive block 3 and translation cam 23, translation cam 23 push drive block when rotating
3rd, 4 horizontal movement of drive link makes upper thread cutting assemblies 6 move forward or back certain distance；Upper scissors transmission component, which further includes, makes biography
The first resetting-mechanism resetted after 4 horizontal movement of lever, the first resetting-mechanism in the present embodiment is to be threaded through on drive link 4
Resetting spring 12, the both ends of resetting spring 12 are contradicted respectively on drive block 3 and rotating member 14, resetting spring 12 drive link to
It is compressed during preceding movement, when the thrust for the cam 23 that is translatable disappears, resetting spring 12 restores due to own resilient and drives biography
Lever 4 resets.
Above-mentioned compression bar 31 is placed in the side of drive block 3, and compression bar 31 is extended at oscillating cam 21, when oscillating cam 21 rotates
Bruising compression bar 31 and drive link 4 can be made to do lever motion, and then scissors retainer 5 is made to move up and down to complete trimming；On cut
Knife transmission component further includes the second resetting-mechanism that scissors retainer 5 is made to be resetted after moving up and down, and second resets in the present embodiment
Mechanism is a tension spring 11, and one end of tension spring 11 is connected with scissors retainer 5, and the other end positioning of tension spring 11 is motionless；When compression bar 31
By oscillating cam 21 pressure when, drive link 4 is made to do lever motion, scissors retainer 5 is driven to lift, and compress tension spring, when
When the pressure of oscillating cam 21 disappears, tension spring can restore and then suppress the landing playback of scissors retainer 5.When oscillating cam 21 rotates
When, compression bar 31 will generate swing with the curve of oscillating cam 21, so as to make upper thread cutting assemblies inside or outward movment, match
It runs snip jointly and closes snip and realize trimming.
To prevent scissors retainer 5 is excessively high when lifting from interfering presser foot device, the present embodiment is protected in drive link 4 and scissors
The top for holding the connected one end of frame 5 is equipped with spacer pin 10；Spacer pin 10 is typically mounted on foot lifting mechanism, so, when
When the thick material of seam or presser foot lifter, with the promotion of presser feet height, upper thread cutting assemblies can also be promoted therewith, can prevent scissors
Interference is generated between transmission component and presser feet.
The present embodiment the side of one end that above-mentioned drive link 4 is connected with the scissors retainer 5 be equipped be vertically arranged and
The guide plate 16 being oriented to when moving up and down for scissors retainer 5, the guide plate 16 in the present embodiment are mounted on the machine of sewing machine
On shell, be mainly used for being oriented to the up and down motion of drive link 4, prevent drive link 4 because gap there are due in trimming process
In shake, so as to promote the stability of trimming.
As shown in figure 3, the end of the above-mentioned rotation axis 7 of the present embodiment is fixed with fixed block 71, fixed block 71 is equipped with recessed
Slot, the side of drive block 9 extend outwardly a convex block 91, and convex block 91, which is stretched into groove, is connected drive block 7 with rotation axis 9.Driving
Block 9 is placed in the lower section of lower trimming cam 22, rotation axis 7 is driven to rotate by drive block 9 when lower trimming cam 22 rotates, Jin Ertong
Cross rocking bar 15, lower scissors connecting rod 8 drives lower trimming component completion to close and cuts and cut across；And lower scissors transmission component further includes makes driving
The third resetting-mechanism that block 9 resets, the third resetting-mechanism in the present embodiment are the compressed spring 13 set on 9 lower section of drive block,
Instantly when trimming cam 22 drives the rotation of drive block 9, compressed spring 13, which is pressurized, to be shortened, and the pressure of trimming cam 22 disappears instantly
When, compressed spring 13 is restored drive block 9 being lifted to be contacted with lower trimming cam 22, makes to automatically reset after trimming, under
Secondary trimming is prepared.
The present invention also provides a kind of sewing machine, sewing machine uses the trimming driving mechanism conduct of use in sewing machine as described above
The shear driving mechanism of upper thread and baseline completes the shearing of upper thread and baseline with this.
In conclusion the trimming driving mechanism and sewing machine of use in sewing machine of the present invention, by the back-and-forth motion of upper scissors and
Swing and the swing of lower scissors transfer to three cams (be respectively translatable cam, oscillating cam and lower scissors cam) respectively
Control；These three cams are mounted in same drive shaft, time and the speed of its work are controlled by motor, you can complete upper thread
With the shearing of baseline.So the present invention effectively overcomes various shortcoming of the prior art and has high industrial utilization.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all can carry out modifications and changes under the spirit and scope without prejudice to the present invention to above-described embodiment.Cause
This, those of ordinary skill in the art is complete without departing from disclosed spirit and institute under technological thought such as
Into all equivalent modifications or change, should by the present invention claim be covered.
Claims (10)
1. the trimming driving mechanism of a kind of use in sewing machine, which is characterized in that the trimming driving mechanism includes：
Drive shaft（2）And it is placed in drive shaft（2）On with drive shaft turns translation cam（21）, oscillating cam（23）It is cut under
Line cam（22）；
Upper scissors transmission component, including the drive block being sequentially connected（3）, drive link（4）And scissors retainer（5）, it is described to cut
Knife retainer（5）With upper thread cutting assemblies（6）It is connected, the drive link（4）It is threaded through rotating member（14）It is interior, the drive block
（3）With the translation cam（21）Contact, be translatable cam（21）The drive block is pushed during rotation（3）, drive link（4）Level fortune
It is dynamic, make upper thread cutting assemblies（6）Move forward or back certain distance；The drive block（3）Side be equipped with compression bar（31）, compression bar
（31）Extend to the oscillating cam（23）Place, oscillating cam（23）It can compression bar described in bruising during rotation（31）And make drive link
（4）Lever motion is done, and then makes scissors retainer（5）It moves up and down to complete trimming；And upper scissors transmission component is further included and is made
Drive link（4）The first resetting-mechanism for being resetted after horizontal movement and make scissors retainer（5）Second resetted after up and down motion is multiple
Position mechanism；
Lower scissors transmission component, including the drive block being sequentially connected（9）, rotation axis（7）, rocking bar（15）With lower scissors connecting rod（8）,
Lower scissors connecting rod（8）It is connected with lower trimming component, the drive block（9）With lower trimming cam（22）Contact, lower trimming cam
（22）Pass through drive block during rotation（9）Drive rotation axis（7）Rotation, and then pass through rocking bar（15）, lower scissors connecting rod（8）Under drive
The completion of trimming component, which is closed, cuts and cuts across；And the lower scissors transmission component further includes the third resetting-mechanism for making driving block reset.
2. the trimming driving mechanism of use in sewing machine according to claim 1, it is characterised in that：The drive shaft（2）With drive
Dynamic motor（1）It is connected.
3. the trimming driving mechanism of use in sewing machine according to claim 1, it is characterised in that：The lower trimming cam（22）
It is placed in the translation cam（21）With the oscillating cam（23）Between, the drive block（9）It is placed in the lower trimming cam
（22）Lower section, the drive block（3）It is placed in the translation cam（21）Side, the compression bar（31）Extend to the swing
Cam（23）Lower section.
4. the trimming driving mechanism of use in sewing machine according to claim 3, it is characterised in that：The third resetting-mechanism is
Set on the drive block（9）The compressed spring of lower section（13）.
5. the trimming driving mechanism of use in sewing machine according to claim 1, it is characterised in that：First resetting-mechanism is
It is threaded through the drive link（4）On resetting spring（12）, resetting spring（12）Both ends contradicted respectively in the drive block（3）
With the rotating member（14）On.
6. the trimming driving mechanism of use in sewing machine according to claim 1, it is characterised in that：Second resetting-mechanism is
One tension spring（11）, tension spring（11）One end and the scissors retainer（5）It is connected, tension spring（11）The other end positioning it is motionless.
7. the trimming driving mechanism of use in sewing machine according to claim 1, it is characterised in that：The drive link（4）With institute
State scissors retainer（5）The top of connected one end is equipped with spacer pin（10）.
8. the trimming driving mechanism of use in sewing machine according to claim 1, it is characterised in that：The drive link（4）With institute
State scissors retainer（5）The side of connected one end, which is equipped with, to be vertically arranged and is led for what is be oriented to during the up and down motion of scissors retainer
To plate（16）.
9. the trimming driving mechanism of use in sewing machine according to claim 1, it is characterised in that：The rotation axis（7）End
Portion is fixed with fixed block（71）, fixed block（71）It is equipped with groove, the drive block（9）Side extend outwardly a convex block
（91）, the convex block（91）It stretches into the drive block in the groove（9）With the rotation axis（7）It is connected.
10. a kind of sewing machine, it is characterised in that：The sewing machine is used such as claim 1 to claim 9 any one of them
The trimming driving mechanism of use in sewing machine is as upper thread and the shear driving mechanism of baseline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610339727.1A CN105780326B (en) | 2016-05-19 | 2016-05-19 | The trimming driving mechanism and sewing machine of use in sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610339727.1A CN105780326B (en) | 2016-05-19 | 2016-05-19 | The trimming driving mechanism and sewing machine of use in sewing machine |
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| Publication Number | Publication Date |
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| CN105780326A CN105780326A (en) | 2016-07-20 |
| CN105780326B true CN105780326B (en) | 2018-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610339727.1A Active CN105780326B (en) | 2016-05-19 | 2016-05-19 | The trimming driving mechanism and sewing machine of use in sewing machine |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108118467B (en) * | 2016-11-29 | 2023-07-14 | 拓卡奔马机电科技有限公司 | Lower thread cutting driving mechanism and buttonholing machine |
| CN108118449B (en) * | 2016-11-29 | 2020-04-28 | 拓卡奔马机电科技有限公司 | Buttonhole sewing machine |
| CN108118466B (en) * | 2016-11-29 | 2023-07-25 | 拓卡奔马机电科技有限公司 | Go up trimming actuating mechanism and buttonholing machine |
| CN107022856A (en) * | 2017-06-15 | 2017-08-08 | 浙江美机缝纫机有限公司 | The driving of sewing machine and thread cutting mechanism |
| CN111074439A (en) * | 2018-10-19 | 2020-04-28 | 顾飞龙 | Sewing thread hooking and cutting device of sewing machine |
| AU2019257483A1 (en) * | 2018-11-15 | 2020-06-04 | Steven Charles Hein | Wireless control system for a shearing installation |
| CN112391745B (en) * | 2019-08-17 | 2022-09-09 | 杰克科技股份有限公司 | Presser foot lifting and trimming driving structure of sewing machine and control method thereof |
| CN112323274B (en) * | 2020-11-21 | 2021-07-09 | 吴江市震宇缝制设备有限公司 | Protective clothing production is with sewing machine thread trimming mechanism |
| CN113186639A (en) * | 2021-04-29 | 2021-07-30 | 绍兴市强生精机制造有限公司 | Scissors hook structure of glove knitting machine |
| CN114481477A (en) * | 2022-01-19 | 2022-05-13 | 浙江美机缝纫机有限公司 | Thread trimming mechanism of sewing machine, presser foot lifting mechanism and sewing machine |
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| Publication number | Publication date |
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| CN105780326A (en) | 2016-07-20 |
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