CN205893610U - Sewing machine's thread trimming mechanism - Google Patents
Sewing machine's thread trimming mechanism Download PDFInfo
- Publication number
- CN205893610U CN205893610U CN201620702899.6U CN201620702899U CN205893610U CN 205893610 U CN205893610 U CN 205893610U CN 201620702899 U CN201620702899 U CN 201620702899U CN 205893610 U CN205893610 U CN 205893610U
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- drive motor
- sewing machine
- cutting mechanism
- thread cutting
- furniture
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Abstract
The utility model provides a sewing machine's thread trimming mechanism belongs to sewing machine technical field. It solved current sewing machine's thread trimming mechanism inadequately accurate, adjust technical problem such as inconvenient. This thread trimming mechanism includes mounting bracket and CD -ROM drive motor that can positive and negative reciprocating rotation, has set firmly the stationary knife on the mounting bracket and can move the sword by the wobbling, has set firmly the drive goods of furniture for display rather than for use on the output shaft of CD -ROM drive motor, and it can the pivoted pivot still to be equipped with on the mounting bracket, the one end of pivot with move the sword and be connected and can drive and move sword and stationary knife and form shearing movement, the other end of pivot has set firmly the pendulum rod, the both ends that are equipped with connecting rod and connecting rod between pendulum rod and the drive goods of furniture for display rather than for use are respectively with the pendulum rod with drive the goods of furniture for display rather than for use and articulate mutually. The utility model discloses simple structure is reliable, has improved the stability of trimming, positive and negative transferring through the CD -ROM drive motor realizes moving sword shearing action to can adjust the CD -ROM drive motor change moves sword initial angle degree and stops the angle, convenient adjustment.
Description
Technical field
The utility model belongs to technical field of sewing equipment, is related to a kind of sewing machine, particularly a kind of trimming of sewing machine
Mechanism.
Background technology
Sewing machine is to use one or more sewing thread, forms one or more stitching on sewing, so that one or more layers is stitched
The machinery equipment that material interweaves or unites by a seam, it can sew the fabrics such as cotton, fiber crops, silk, hair, staple fibre and leather, plastics, paper
Wait product, the stitching neat appearance stitched out, smooth firmly, sewing velocity is fast, easy to use, thus is used widely.Cut
Line mechanism is the important component part in sewing machine, for the automatic shearing in sewing process, can greatly improve sewing effect
Rate.
China's patent (notification number: cn202705688u；The day for announcing: 2013-01-30) disclose a kind of sewing machine automatic shearing
Line apparatus, including the moving knife cutting off line that can cooperate, stationary knife, connecting rod and trimming electromagnet, stationary knife is fixed on sewing machine support
On, one end of moving knife and connecting rod is fixed on trimming knife rest, and trimming knife rest is sleeved in lower axle, the other end of connecting rod and drive link
One end hinged, the other end of drive link is connected with the dynamic iron of trimming electromagnet, and feed lifting rock shaft is provided with trimming cam, and trimming is convex
Wheel is located at the side of drive link, and drive link is fixed with the straight pin being driven drive link movement with trimming cam engagement.
The automatic thread severing device of sewing machine that above-mentioned patent provides drives moving knife motion by connecting rod, thus the common shape with stationary knife
Shearing motion is become to complete trimming action, connecting rod is to drive by drive link and electromagnet, and its moving process stability is poor, electromagnetism
The driving accuracy of iron is poor, and in addition electromagnet energising opportunity is wayward, easily causes misoperation or slow in reacting, operating efficiency
Low；In addition the related regulation of trimming can only be carried out using mechanical adjustment, not convenient.
Content of the invention
The utility model is directed to the problems referred to above that existing technology exists, and provides a kind of thread cutting mechanism of sewing machine, this reality
With new technical problem to be solved it is: how to improve the accuracy that in sewing machine, thread cutting mechanism uses convenient with adjust
Property.
The purpose of this utility model can be realized by following technical proposal:
A kind of thread cutting mechanism of sewing machine, including installing rack and the drive motor being capable of positive and negative reciprocating rotation, described installation
Stationary knife is installed with frame with the moving knife that can swing it is characterised in that driving pendulum is installed with the output shaft of described drive motor
Part, described installing rack is additionally provided with the rotating shaft that can rotate, and one end of described rotating shaft is connected with described moving knife and can drive institute
State moving knife and stationary knife and form shearing motion, the other end of described rotating shaft is installed with fork, described fork and described driving goods of furniture for display rather than for use it
Between be provided with the two ends of connecting rod and connecting rod respectively with described fork and drive goods of furniture for display rather than for use to be hinged.
Its principle is as follows: this thread cutting mechanism is used for the automatic shearing of sewing machine, by the thread cutting mechanism band within sewing machine
Moving knife action under dynamic needle plate, completes trimming in the predetermined time.Specifically, drive motor positive and negative rotation drives and drives pendulum
Part swings, and swings goods of furniture for display rather than for use and passes through the swing of connecting rod band driven fork, fork swings and can drive rotating shaft reciprocating rotation again, thus driving dynamic
Knife action simultaneously forms shearing motion with stationary knife.In order to adapt to sewing machine inner space construct, be easily installed, by drive motor with
Moving knife interval setting, realizes moment transmission by each attachment structure above-mentioned；Simple and reliable for structure, improve stablizing of trimming
Property；This thread cutting mechanism realizes moving knife shear action by positive and negative the transferring of drive motor, just can be changed by adjusting drive motor
Moving knife start angle and termination point, thus changing the opportunity that trimming is relative to take-up, reaching the purpose adjusting trimming, automating journey
Degree is high, adjusts easy to maintenance；Trimming is realized using independent drive motor, noise is little simultaneously, spindle motor volume will not be increased and bear
Carry.
In the thread cutting mechanism of above-mentioned sewing machine, described installing rack is fixed with installing plate, described drive motor is fixed
On described installing plate, the output shaft of described drive motor is installed with vane, described thread cutting mechanism also includes sensing
The sensor of described vane.In the technical program, tangent line start angle or termination point are determined using sensor.By sensing
Device senses the anglec of rotation of drive motor output shaft, thus ensureing accuracy and the reliability of moving knife shear action, realizes efficiently
Trimming.
In the thread cutting mechanism of above-mentioned sewing machine, described sensor is located between described installing plate and described vane.
So sensor favorably can be protected, be reduced inductionless phenomenon, be improved accuracy.
In the thread cutting mechanism of above-mentioned sewing machine, alternatively, described drive motor has and can detect
With the servo-driver controlling drive motor rotational angle.When in the technical program, moving knife carries out shearing motion, moving knife position has
When need adjustment (position and stationary knife between too forward or deviate from), at this time pass through to adjust automatically controlled parameter change driving
The rotation of motor output shaft, rotates to an angle as needed, and so band driven fork and moving knife swing certain angle, that is, change
Start angle during moving knife work is so that its shear action is more reliable, and easy to adjust.
Drive motor in the technical program adopts z signal closed loop motor.
It is arranged on for measuring position of magnetic pole and servomotor corner and rotating speed on this servomotor by encoded servo device,
And adjust automatically controlled parameter to change moving knife start angle and termination point, can conveniently adjust the action of drive motor, precisely may be used
Lean on.
In the technical program, driving source is used as by drive motor and drives moving knife action, as equivalents, also may be used
Using using rotary magnet or rotary cylinder etc. as driving source.In addition to this it is possible to using electromagnet, cylinder isoline fortune
Dynamic executive component realizing this function, the body of electromagnet or cylinder hinged with installing plate on, the output of electromagnet or cylinder
Axle is connected with fork, the executive component linearly operating such as electromagnet, cylinder, promotes fork to swing, and then drives axis of rotation, moves
Knife and stationary knife form tangent line cutting edge or the disengagement of activity, reach the purpose of trimming.Replaced using these simple similar fashion above-mentioned
Generation, but without departing from spirit of the present utility model or surmount scope defined in appended claims.
In the thread cutting mechanism of above-mentioned sewing machine, described stationary knife and and moving knife level of relative setting, the one of described moving knife
End is connected with described rotating shaft circumference, and the other end of described moving knife has the cutting edge towards described stationary knife.Axis of rotation just can drive
Moving knife swings, and forms shearing motion with stationary knife.
In the thread cutting mechanism of above-mentioned sewing machine, described installing rack is installed with contiguous block, described contiguous block has
The through hole running through up and down, described rotating shaft is vertically inserted in described through hole and can rotate in through hole inner circumferential, described rotating shaft
Upper end is connected with described moving knife, and the lower end of described rotating shaft is connected with described fork.
In the thread cutting mechanism of above-mentioned sewing machine, described motor is vertically arranged upward, and described driving goods of furniture for display rather than for use is in long strip block
Shape and horizontally set, described connecting rod is horizontally disposed with and the two ends of described connecting rod are all connected with fork and driving goods of furniture for display rather than for use by axial screw
Connect.
In the thread cutting mechanism of above-mentioned sewing machine, described installing rack is additionally provided with thread tension disc, described thread tension disc with described
Stationary knife phase reclines.By thread tension disc, suture to be cut is clamped at stationary knife, can be quickly smart when moving knife and stationary knife shearing motion
Accurate cuts off suture.
Compared with prior art, advantage of the present utility model is as follows:
1st, simple and reliable for structure in this thread cutting mechanism, improve the stability of trimming；Positive and negative by drive motor transfers
Realize moving knife shear action, high degree of automation, adjust easy to maintenance；Trimming is realized using independent drive motor simultaneously, make an uproar
Sound is little, will not increase the load of spindle motor volume.
2nd, pass through regulation drive motor in this thread cutting mechanism and just can change moving knife start angle and termination point, thus changing
Trimming, relative to the opportunity of take-up, reaches the purpose adjusting trimming, easy to adjust.
Brief description
Fig. 1 is the perspective view of this thread cutting mechanism in embodiment one.
Fig. 2 is the perspective view of this thread cutting mechanism in embodiment two.
In figure, 1, installing rack；11st, installing plate；12nd, contiguous block；12a, through hole；2nd, drive motor；3rd, stationary knife；4th, moving knife；
41st, cutting edge；5th, drive goods of furniture for display rather than for use；6th, rotating shaft；7th, fork；8th, connecting rod；9th, vane；10th, sensor；1a, axial screw；1b, folder
Line piece.
Specific embodiment
The following is specific embodiment of the utility model and combine accompanying drawing, the technical solution of the utility model is made further
Description, but the utility model is not limited to these embodiments.
Embodiment one
This thread cutting mechanism is used for the automatic shearing of sewing machine, is driven dynamic under needle plate by the thread cutting mechanism within sewing machine
Knife 4 action, completes trimming in the predetermined time.Specifically, as shown in figure 1, this thread cutting mechanism includes installing rack 1 and can
The drive motor 2 of positive and negative reciprocating rotation, installing rack 1 is installed with stationary knife 3 and the moving knife 4 that can swing, the output of drive motor 2
Driving goods of furniture for display rather than for use 5 is installed with axle, installing rack 1 is additionally provided with the rotating shaft 6 that can rotate, one end of rotating shaft 6 is connected and energy with moving knife 4
Moving knife 4 and stationary knife 3 is enough driven to form shearing motion, the other end of rotating shaft 6 is installed with fork 7, between fork 7 and driving goods of furniture for display rather than for use 5
It is provided with connecting rod 8 and the two ends of connecting rod 8 are hinged with fork 7 and driving goods of furniture for display rather than for use 5 respectively；Further, stationary knife 3 and and moving knife 4 water
Put down and be oppositely arranged, one end of moving knife 4 is connected with rotating shaft 6 circumference, and the other end of moving knife 4 has the cutting edge 41 towards stationary knife 3, rotating shaft
6 rotations just can drive moving knife 4 to swing, and forms shearing motion with stationary knife 3；Contiguous block 12, contiguous block 12 are installed with installing rack 1
On there is the through hole 12a running through up and down, rotating shaft 6 is vertically inserted in through hole 12a and can rotate in through hole 12a inner circumferential, turn
The upper end of axle 6 is connected with moving knife 4, and the lower end of rotating shaft 6 is connected with fork 7；Drive motor 2 is vertically arranged upward, and driving goods of furniture for display rather than for use 5 is in
Strip bulk and horizontally set, connecting rod 8 is horizontally disposed with and the two ends of connecting rod 8 are all put with fork 7 and driving by axial screw 1a
Part 5 connects.Drive motor 2 positive and negative rotation drives and drives goods of furniture for display rather than for use 5 to swing, and swings goods of furniture for display rather than for use and carries driven fork 7 to swing by connecting rod 8, pendulum
Bar 7 swings and can drive rotating shaft 6 reciprocating rotation again, thus driving moving knife 4 action and forming shearing motion with stationary knife 3.In order to suitable
The inner space answering sewing machine constructs, and is easily installed, and drive motor 2 and moving knife 4 interval setting connect knot by above-mentioned each
Structure realizes moment transmission；Simple and reliable for structure, improve the stability of trimming；This thread cutting mechanism passes through the positive and negative of drive motor 2
Transferring and realize moving knife 4 shear action, just changing moving knife 4 start angle and termination point by adjusting drive motor 2, thus changing
Become the opportunity that trimming is relative to take-up, reach the purpose adjusting trimming, high degree of automation, adjust easy to maintenance；Adopt solely simultaneously
Vertical drive motor 2 realizes trimming, and noise is little, will not increase the load of spindle motor volume.
Thread tension disc 1b is additionally provided with installing rack 1 in the present embodiment, thread tension disc 1b is mutually reclined with stationary knife 3, by thread tension disc 1b
Suture to be cut is clamped at stationary knife 3, when moving knife 4 and stationary knife 3 shearing motion, is capable of fast accurate suture is cut off.
As shown in figure 1, being fixed with installing plate 11 on installing rack 1, drive motor 2 is installed on installing plate 11, drive motor 2
Output shaft on be installed with vane 9, installing plate 11 is provided with the sensor 10 that can sense vane 9；Vane 9 is preferably
Sector, sensor 10 is located between installing plate 11 and vane 9；Tangent line start angle or end angle are determined using sensor 10
Degree, by sensor 10 sense drive motor 2 output shaft the anglec of rotation, thus ensure moving knife 4 shear action accuracy and
Reliability, realizes efficient trimming.
Embodiment two
As shown in Fig. 2 the present embodiment is roughly the same with embodiment one, difference is, drive motor 2 in the present embodiment
Output shaft on there is no vane 9, be also not provided with sense vane 9 sensor 10, in the present embodiment, drive motor 2 is preferred
For z signal closed loop motor, drive motor 2 has the servo-driver that can detect and control drive motor 2 rotational angle；Watch
Take encoder to be arranged on for measuring position of magnetic pole and servomotor corner and rotating speed on this servomotor, by adjusting automatically controlled ginseng
Number changes the rotation of drive motor 2 output shaft, rotates to an angle as needed, and so band driven fork 7 and moving knife 4 swing necessarily
Angle, that is, change start angle during moving knife 4 work so that its shear action is more reliable, and easy to adjust.
Specific embodiment described herein is only explanation for example to the utility model spirit.The utility model institute
Belong to those skilled in the art described specific embodiment can be made with various modifications or supplement or using similar
Mode substitute, but without departing from of the present utility model spirit or surmount scope defined in appended claims.
Although more employing 1, installing rack herein；11st, installing plate；12nd, contiguous block；12a, through hole；2nd, drive motor；
3rd, stationary knife；4th, moving knife；41st, cutting edge；5th, drive goods of furniture for display rather than for use；6th, rotating shaft；7th, fork；8th, connecting rod；9th, vane；10th, sensor；1a、
Axial screw；The terms such as 1b, thread tension disc, but it is not precluded from the possibility using other terms.Using these terms it is only
More easily describe and explain essence of the present utility model；Being construed as any additional restriction is and this reality all
Contrary with new spirit.
Claims (8)
1. a kind of thread cutting mechanism of sewing machine, including installing rack (1) with the drive motor (2) of being capable of positive and negative reciprocating rotation, described
Stationary knife (3) and the moving knife (4) that can swing are installed with installing rack (1) it is characterised in that the output of described drive motor (2)
Driving goods of furniture for display rather than for use (5) is installed with axle, described installing rack (1) is additionally provided with the rotating shaft (6) that can rotate, the one of described rotating shaft (6)
End is connected and can drive described moving knife (4) and stationary knife (3) formation shearing motion with described moving knife (4), described rotating shaft (6) another
One end is installed with fork (7), is provided with connecting rod (8) and the two ends of connecting rod (8) between described fork (7) and described driving goods of furniture for display rather than for use (5)
It is hinged with described fork (7) and driving goods of furniture for display rather than for use (5) respectively.
2. a kind of thread cutting mechanism of sewing machine according to claim 1 is it is characterised in that described installing rack (1) is upper connected
There is installing plate (11), described drive motor (2) is installed on described installing plate (11), on the output shaft of described drive motor (2)
It is installed with vane (9), described thread cutting mechanism also includes the sensor (10) that can sense described vane (9).
3. a kind of thread cutting mechanism of sewing machine according to claim 2 is it is characterised in that described sensor (10) is located at institute
State between installing plate (11) and described vane (9).
4. a kind of thread cutting mechanism of sewing machine according to claim 1 is it is characterised in that described drive motor (2) above has
There is the servo-driver that can detect and control drive motor (2) rotational angle.
5. a kind of thread cutting mechanism of the sewing machine according to claim 1 or 2 or 3 or 4 is it is characterised in that described stationary knife (3)
Arrange with moving knife (4) level of relative, one end of described moving knife (4) is connected with described rotating shaft (6) circumference, described moving knife (4)
The other end has the cutting edge (41) towards described stationary knife (3).
6. a kind of thread cutting mechanism of sewing machine according to claim 5 is it is characterised in that described installing rack (1) is upper fixed
There is contiguous block (12), described contiguous block (12) has the through hole (12a) running through up and down, described rotating shaft (6) is vertically inserted into institute
State in through hole (12a) and can rotate in through hole (12a) inner circumferential, the upper end of described rotating shaft (6) is connected with described moving knife (4),
The lower end of described rotating shaft (6) is connected with described fork (7).
7. a kind of thread cutting mechanism of sewing machine according to claim 6 is it is characterised in that described drive motor (2) is vertical
Arrange upward, described driving goods of furniture for display rather than for use (5) is in strip bulk and horizontally set, described connecting rod (8) is horizontally disposed with and described connecting rod (8)
Two ends all by axial screw (1a) and fork (7) and drive goods of furniture for display rather than for use (5) to be connected.
8. a kind of thread cutting mechanism of sewing machine according to claim 7 is it is characterised in that also set on described installing rack (1)
There is thread tension disc (1b), described thread tension disc (1b) and described stationary knife (3) mutually recline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620702899.6U CN205893610U (en) | 2016-06-30 | 2016-06-30 | Sewing machine's thread trimming mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620702899.6U CN205893610U (en) | 2016-06-30 | 2016-06-30 | Sewing machine's thread trimming mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205893610U true CN205893610U (en) | 2017-01-18 |
Family
ID=57772347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620702899.6U Expired - Fee Related CN205893610U (en) | 2016-06-30 | 2016-06-30 | Sewing machine's thread trimming mechanism |
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| Country | Link |
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| CN (1) | CN205893610U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105926193A (en) * | 2016-06-30 | 2016-09-07 | 拓卡奔马机电科技有限公司 | Trimming mechanism of sewing machine |
| CN109267252A (en) * | 2018-12-13 | 2019-01-25 | 杰克缝纫机股份有限公司 | Cutting facility and method on a kind of sewing machine for continuously sewing |
| CN109594235A (en) * | 2017-09-30 | 2019-04-09 | 杰克缝纫机股份有限公司 | A kind of sewing machine |
| CN109868571A (en) * | 2017-12-04 | 2019-06-11 | 杰克缝纫机股份有限公司 | A kind of Scissoring device and its method of cutting out stitching muti needle chainstitch m/c |
| CN109881389A (en) * | 2019-03-18 | 2019-06-14 | 杰克缝纫机股份有限公司 | For cutting the mechanism of sewing machine suture |
| CN111304841A (en) * | 2018-12-12 | 2020-06-19 | 苏州日和缝制设备有限公司 | Automatically controlled thread trimming mechanism of stub bar |
-
2016
- 2016-06-30 CN CN201620702899.6U patent/CN205893610U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105926193A (en) * | 2016-06-30 | 2016-09-07 | 拓卡奔马机电科技有限公司 | Trimming mechanism of sewing machine |
| CN109594235A (en) * | 2017-09-30 | 2019-04-09 | 杰克缝纫机股份有限公司 | A kind of sewing machine |
| CN109868571A (en) * | 2017-12-04 | 2019-06-11 | 杰克缝纫机股份有限公司 | A kind of Scissoring device and its method of cutting out stitching muti needle chainstitch m/c |
| CN111304841A (en) * | 2018-12-12 | 2020-06-19 | 苏州日和缝制设备有限公司 | Automatically controlled thread trimming mechanism of stub bar |
| CN109267252A (en) * | 2018-12-13 | 2019-01-25 | 杰克缝纫机股份有限公司 | Cutting facility and method on a kind of sewing machine for continuously sewing |
| CN109881389A (en) * | 2019-03-18 | 2019-06-14 | 杰克缝纫机股份有限公司 | For cutting the mechanism of sewing machine suture |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170118 Termination date: 20210630 |