CN109706640A - A kind of sewing machine and its Yarn taking-up mechanism - Google Patents
A kind of sewing machine and its Yarn taking-up mechanism Download PDFInfo
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- CN109706640A CN109706640A CN201910008241.3A CN201910008241A CN109706640A CN 109706640 A CN109706640 A CN 109706640A CN 201910008241 A CN201910008241 A CN 201910008241A CN 109706640 A CN109706640 A CN 109706640A
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- line
- tension lever
- casing
- thread take
- yarn taking
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Abstract
The invention discloses a kind of Yarn taking-up mechanisms, comprising: the needle bar crank that can be rotated relative to casing；First end is rotationally connected with the thread take-up tension lever of the needle bar crank；First end is rotationally connected with the line-choosing connecting rod of the second end of the thread take-up tension lever, and the second end of the thread take-up tension lever is to take-up for line；The adjustment portion of the second end of the line-choosing connecting rod can be rotated and is rotationally connected with relative to casing；When the adjustment portion is rotated relative to casing, the line-choosing connecting rod drives the thread take-up tension lever to adjust line sending amount relative to the change in location of casing to realize the amplitude of fluctuation variation of the thread take-up tension lever.The invention discloses a kind of sewing machines including above-mentioned Yarn taking-up mechanism.Above-mentioned Yarn taking-up mechanism can easily adjust the stroke of thread take-up tension lever, line amount needed for the cloth to adapt to different-thickness.
Description
Technical field
The present invention relates to technical field of sewing machines, in particular to a kind of sewing machine and its Yarn taking-up mechanism.
Background technique
Currently, can not be adjusted because mechanism size is fixed for line amount for existing sewing, Yarn taking-up mechanism and its attachment,
Or the range of adjustment is extremely limited.
To change thread take up lever stroke, first method is that multiple holes are arranged in thread take-up tension lever, for changing thread take up lever stroke, so
And the limited amount in hole, the variation for line amount are also not very big.Second method be by increase line-choosing connecting rod pin guide surface,
Reach the adjustable purpose of take-up lever stroke.However this regulative mode needs to dismantle, panel is by manually adjusting, and line-choosing connecting rod
Increased positioning plane quantity is sold since structure limits, and the take-up lever stroke knots modification that can be realized is extremely limited.Above-mentioned factor limit
Sewing machine has been made for the adaptability for fabric thickness of sewing, because less for thin material just can guarantee that stitching is excellent for line amount
Beauty, and thick material then needs more just to can guarantee the failures such as do not break for line amount.Sewing adaptability of the sewing machine for thin and thick material
Difference, on the one hand improves the purchase cost of enterprise, on the other hand also reduces the competitiveness of sewing device itself.
Summary of the invention
The object of the present invention is to provide a kind of sewing machine and its Yarn taking-up mechanisms, can easily adjust the stroke of thread take-up tension lever,
Line amount needed for cloth to adapt to different-thickness.
To achieve the above object, the present invention provides a kind of Yarn taking-up mechanism, comprising:
The needle bar crank that can be rotated relative to casing；
First end is rotationally connected with the thread take-up tension lever of the needle bar crank；
First end is rotationally connected with the line-choosing connecting rod of the second end of the thread take-up tension lever, and the second end of the thread take-up tension lever is to receive
Line is for line；
The adjustment portion of the second end of the line-choosing connecting rod can be rotated and is rotationally connected with relative to casing；
When the adjustment portion is rotated relative to casing, the line-choosing connecting rod drives the thread take-up tension lever relative to the position of casing
Variation is set, to realize the amplitude of fluctuation variation of the thread take-up tension lever, adjusts line sending amount.
It preferably, further include the driving being connected with the adjustment portion, to drive the adjustment portion to rotate relative to casing
Portion.
Preferably, the output shaft of the driving portion is fixedly connected with driving crank, and the driving crank rotation connection driving connects
One end of bar, the other end of the drive link are rotationally connected with the second end of the line-choosing connecting rod by the adjustment portion.
Preferably, pass through transmission band connection between the driving portion and the adjustment portion.
Preferably, the driving portion is specially stepper motor and/or the adjustment portion is specially cam pin.
Preferably, the adjustment portion and the driving portion successively extend along the direction far from the thread take-up tension lever.
It preferably, further include being connected with the driving portion, to control the driving portion movement to realize the adjustment portion
Control unit relative to casing rotation.
Preferably, further include be connected with the control unit, the test section of thickness to detect cloth；When the test section
When detecting the thickness change of cloth, the control unit controls the driving portion movement.
It preferably, further include being connected with the needle bar crank, to drive the needle bar crank to rotate relative to casing
Main shaft.
A kind of sewing machine provided by the invention, including Yarn taking-up mechanism described in any of the above embodiments.
Relative to above-mentioned background technique, Yarn taking-up mechanism provided by the invention, including needle bar crank, thread take-up tension lever, line-choosing connecting rod
And adjustment portion, needle bar crank can be rotated relative to casing, and the first end of thread take-up tension lever is rotationally connected with needle bar crank, and the of thread take-up tension lever
To take-up for line, the first end of line-choosing connecting rod is rotationally connected with the second end of thread take-up tension lever at two ends, and the second end of line-choosing connecting rod turns
It is dynamic to be connected to adjustment portion, and adjustment portion can be rotated relative to casing；When adjustment portion is rotated relative to casing, adjustment portion drive is chosen
Change in location occurs for line connecting rod, and line-choosing connecting rod drives the change in location of thread take-up tension lever, namely because adjustment portion is relative to casing rotation
And make change in location of the thread take-up tension lever relative to casing, and then change the amplitude of fluctuation of thread take-up tension lever namely the stroke of thread take-up tension lever,
So as to adjust the line sending amount of thread take-up tension lever.So set, thread take-up tension lever can be completed relative to casing rotation using adjustment portion
The adjustment of line sending amount avoids the mode that the panel that needs to dismantle in the prior art manually adjusts, and simplifies the adjustment of line sending amount, and mentions
High working efficiency.
Sewing machine provided by the invention with Yarn taking-up mechanism, has above-mentioned beneficial effect, will not be described in great detail herein herein.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
The embodiment of invention for those of ordinary skill in the art without creative efforts, can also basis
The attached drawing of offer obtains other attached drawings.
Fig. 1 is the structural schematic diagram of the sewing machine provided by the embodiment of the present invention with Yarn taking-up mechanism；
Fig. 2 is the schematic diagram of mechanism of the Yarn taking-up mechanism in Fig. 1；
Fig. 3 is the schematic diagram of mechanism of another kind Yarn taking-up mechanism provided by the embodiment of the present invention；
Fig. 4 is the work flow diagram of the Yarn taking-up mechanism in Fig. 1.
Wherein:
Main shaft 1, thread take-up tension lever 2, cable-through hole 3, line-choosing connecting rod 4, adjustment portion 5, drive link 6, driving crank 7, driving portion 8,
Needle bar crank 9, casing 10, control unit 11, test section 12, compression bar 13, presser feet 14, cloth 15.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
In order to make those skilled in the art more fully understand the present invention program, with reference to the accompanying drawing and it is embodied
The present invention is described in further detail for mode.
Yarn taking-up mechanism provided by the invention, as shown in Figure of description 1 to attached drawing 3, including thread take-up tension lever 2, line-choosing connecting rod 4,
Adjustment portion 5 and needle bar crank 9.
For the orientation shown in the Figure of description 2, the left end (first end) of thread take-up tension lever 2 is rotationally connected with needle bar crank 9,
The second end of thread take-up tension lever 2 is to realize take-up for line；Specifically, take-up movement is carried out when thread take-up tension lever 2 moves upwards, and is transported downwards
It carries out acting for line when dynamic.
Needle bar crank 9 can be rotated relative to casing 10；The right end (first end) of line-choosing connecting rod 4 is rotationally connected with thread take-up tension lever 2
Second end namely the position that is rotatablely connected of line-choosing connecting rod 4 and thread take-up tension lever 2 be line-choosing connecting rod 4 first end and thread take-up tension lever 2
Second end position.
It should be noted that for thread take-up tension lever 2, thread take-up tension lever 2 and the mistake with cable-through hole 3 shown in Figure of description 2
Line bar is connected, and since mast is fixedly connected with thread take-up tension lever 2, indicates to be integrated in Figure of description 2, however actually
Thread take-up tension lever 2 is only the part of thread take-up tension lever 2 described in word segment in illustrating.
The left end (second end) of line-choosing connecting rod 4 is rotationally connected with adjustment portion 5, and adjustment portion 5 can be rotated relative to casing 10；On
Being rotatably connected in text may be configured as hingedly.Main shaft 1 as a source of power, is connected with needle bar crank 9, needle bar crank 9
One end be fixedly connected with main shaft 1, the first end rotation connection of the other end of needle bar crank 9 and thread take-up tension lever 2.When main shaft 1 rotates
When, then 1 synchronous rotary of needle bar crank 9 and main shaft.
During the motion, when being sewed for the cloth 15 of same thickness, adjustment portion 5 is static not relative to casing 10
It is dynamic, when needle bar crank 9 makees to continue rotary motion relative to casing 10, since thread take-up tension lever 2 is by needle bar crank 9 and line-choosing connecting rod
4 collective effect power, so that the track of the second end of thread take-up tension lever 2 is in willow leaf shape, the take-up motion profile A of needle bar crank 9 is as said
Shown in bright book attached drawing 2.The take-up motion profile A of cable-through hole 3 is take-up movement up and down, is in willow leaf shape, so that upper thread is in shank
Upper and lower displacement when occur it is corresponding take out tightly and loosen, form stitching.The distance of the highs and lows of take-up motion profile A
The as stroke of Yarn taking-up mechanism supply suture, and when the position of adjustment portion 5 determines, take-up motion profile A is determining.
When the thickness of cloth 15 changes, adjustment portion 5 rotates by a certain angle relative to casing 10, i.e. changeable at this time
Positional relationship of the line-choosing connecting rod 4 relative to casing 10, when crank 9 makees to continue rotary motion relative to casing 10, in shank song
Under the collective effect of handle 9 and line-choosing connecting rod 4, the track of the second end of thread take-up tension lever 2 changes, namely according to the thickness of cloth 15
The amplitude of fluctuation of i.e. adjustable thread take-up tension lever 2, and then the adjusting of line sending amount.
By taking Figure of description 2 as an example, it is assumed that the thinner thickness of current sewing cloth 15, when the thickness of cloth 15 thickens,
It being then intended to increase line sending amount, the amplitude of fluctuation of thread take-up tension lever 2 needs to increase, it should then rotate adjustment portion 5 counterclockwise at this time, when
Adjustment portion 5 is still in current state after rotating by a certain angle counterclockwise, then controls crank 9 and persistently turns round relative to casing 10
Movement, at this moment the amplitude of fluctuation of thread take-up tension lever 2 becomes larger, and line sending amount increases, to be suitable for thicker cloth 15.
Certainly, the relationship between the thickness change for cloth 15 and the rotation angle of adjustment portion 5, should be according to Yarn taking-up mechanism
Depending on the dimensional structure and actual needs of middle all parts, the not relational expression of quantitative, does not make this specific yet herein
It limits.
In order to realize that adjustment portion 5 is rotated relative to casing 10, Yarn taking-up mechanism is additionally provided with driving portion 8, and driving portion 8 can be step
Into components such as motors；Driving portion 8 is connected with adjustment portion 5, and when driving portion 8 works, then adjustment portion 5 is rotated relative to casing 10,
I.e. changeable positional relationship of the line-choosing connecting rod 4 relative to casing 10, to adjust line sending amount.
For the specific connection relationship between driving portion 8 and adjustment portion 5, two kinds of specific embodiments are provided herein；First
Kind, the output shaft of driving portion 8 is fixedly connected with driving crank 7, and driving crank 7 is rotatablely connected one end of drive link 6, drive link
The second end of 6 other end rotation connection line-choosing connecting rod 4.Such as Figure of description 2, when driving portion 8 is run, then driving portion 8
Output shaft rotation drives driving crank 7 to move, and drives crank 7 and then drives drive link 6 that change in location, final change occurs
Line sending amount.Second, by transmission band connection between driving portion 8 and adjustment portion 5, as shown in Figure of description 3, when driving portion 8
When operation, then the change in location of adjustment portion 5, and then the change in location of drive line-choosing connecting rod 4, to change the swing of thread take-up tension lever 2
Amplitude realizes the adjusting of line sending amount.
Adjustment portion 5 may be configured as having between the rotation center of cam pin namely cam pin and the centroid of cam pin certain
Distance, by taking the first way that above-mentioned driving portion 8 is connected with adjustment portion 5 as an example, one end of cam pin and casing 10 are hinged, eccentric
The other end and line-choosing connecting rod 4 and drive link 6 of pin constitute compound hinges.
For the orientation shown in the Figure of description 2, adjustment portion 5 and driving portion 8 successively prolong along the direction far from thread take-up tension lever 2
It stretches, namely sets gradually driving portion 8, drive link 6, line-choosing connecting rod 4 and thread take-up tension lever 2 from left to right；Certainly, above-mentioned component its
His position also should be within the protection scope of this paper, as long as can be realized above-mentioned technical effect.
Yarn taking-up mechanism of the invention further includes control unit 11, and control unit 11 is connected with driving portion 8, to control driving portion 8
Movement completes the adjusting of line sending amount to realize that adjustment portion 5 is rotated relative to casing 10.Control unit 11 is also connected with test section 12,
Thickness of the test section 12 to detect cloth 15；When test section 12 detects the thickness change of cloth 15, control unit 11 is controlled
Driving portion 8 moves.Wherein, test section 12 can be photoelectric sensor in the prior art etc..
As shown in Figure of description 1, driving portion 8 is fixed on casing 10, and driving portion 8 is controlled the control in portion 11.Pressure
Foot 14 can be fixed by screws on compression bar 13, and test section 12 is fixed on casing 10, and test section 12 is connected with control unit 11, inspection
Survey portion 12 to detect because of 15 thickness change of cloth caused by presser feet 14 Level Change amount.
In conjunction with Figure of description 4, in step slo, booting step means to power on the electrical control mechanisms such as sewing machine, waits
Subsequent operation；In step S20, different cloth modes is set, as described above, for the cloth 15 of different-thickness, is needed
The rotation angle of adjustment portion 5 be it is how many, the relationship between the thickness change of cloth 15 and the rotation angle of adjustment portion 5 should be according to reality
Border need depending on, and start sewing before carry out data input.In step s 30, it executes sewing namely main shaft 1 starts
Rotation, sewing process start；In step s 40, test section 12 detects the thickness of cloth 15, and the signal is input to control units
11；Namely during sewing, the thickness for the cloth 15 that 12 real-time detection of test section is currently being sewed, and will currently
The thickness of the cloth 15 of sewing is input to control unit 11；In step s 50, control unit 11 identifies whether the thickness of cloth 15 becomes
Change；Namely when the thickness change of cloth 15, the signal that test section 12 is input to control unit 11 will also change, and control unit
11 can recognize that the variation, and execute step S60, if the thickness of cloth 15 does not change, test section 12 is input to control unit
11 signal is unchanged, then return step S30；In step S60, control unit 11 controls driving portion 8 and rotates corresponding angle, can
Adjustment portion 5 is driven to turn an angle by driving crank 7 and drive link 6；As described above, the eccentric position of adjustment portion 5
Change, Yarn taking-up mechanism for lineal travel (the line sending amount of thread take-up tension lever 2) as take-up motion profile A also changes simultaneously,
To adapt to the thickness change namely step S70 of cloth 15.In continuing sewing process, if the thickness of cloth 15 changes again,
Test section 12 will test signal and input to control unit 11, and control unit 11 controls driving portion 8 and rotates corresponding angle, pass through above-mentioned mistake
Journey change Yarn taking-up mechanism for line amount, reach at any time adapt to sewing thickness change requirement；Namely step S80 return step S60
Process.If the thickness of cloth 15 terminates also not change until sewing, the angle that driving portion 8 keeps original is constant,
Take-up lever stroke equally remains unchanged；Step S90, as contact sewing process.
A kind of sewing machine with Yarn taking-up mechanism provided by the present invention, including take-up described in above-mentioned specific embodiment
Mechanism；The other parts of sewing machine are referred to the prior art, not reinflated herein.
Sewing machine and Yarn taking-up mechanism provided by the present invention, can by driving portion 8 drive by thread take-up tension lever 2, line-choosing connecting rod 4,
The four-bar mechanism that needle bar crank 9 and casing 10 4 are constituted changes the eccentric position of adjustment portion 5, to change Yarn taking-up mechanism
Take-up motion profile A, and then cause the variation for line amount.So set, bigger for the variation range of line amount, variable gradient is more
Finely, it is able to satisfy the adjusting to different clothes for line amount, improves sewing machine to the adaptability of different fabrics thickness.Yarn taking-up mechanism is also
Yarn taking-up mechanism can be carried out automatically according to the thickness change situation of cloth 15 for the setting of line amount, realize intelligent operation, more
Save worry, it is more convenient, increase sewing machine adaptability for working condition, reduces the purchase cost of enterprise, promote the competitiveness of sewing device.
It should be noted that in the present specification, such as first and second etc relational terms are used merely to one
Entity is distinguished with other several entities, and without necessarily requiring or implying between these entities, there are any this actual
Relationship or sequence.
Sewing machine provided by the present invention and its Yarn taking-up mechanism are described in detail above.It is used herein specifically
Principle and implementation of the present invention are described for a example, the present invention that the above embodiments are only used to help understand
Method and its core concept.It should be pointed out that for those skilled in the art, not departing from original of the invention
, can be with several improvements and modifications are made to the present invention under the premise of reason, these improvement and modification also fall into right of the present invention and want
In the protection scope asked.
Claims (10)
1. a kind of Yarn taking-up mechanism characterized by comprising
The needle bar crank (9) that can be rotated relative to casing (10)；
First end is rotationally connected with the thread take-up tension lever (2) of the needle bar crank (9)；
First end is rotationally connected with the line-choosing connecting rod (4) of the second end of the thread take-up tension lever (2), the second end of the thread take-up tension lever (2)
To take-up for line；
The adjustment portion (5) of the second end of the line-choosing connecting rod (4) can be rotated and is rotationally connected with relative to casing (10)；
When the adjustment portion (5) is rotated relative to casing (10), the line-choosing connecting rod (4) drives the thread take-up tension lever (2) opposite
Change in location in casing (10) adjusts line sending amount to realize the amplitude of fluctuation variation of the thread take-up tension lever (2).
2. Yarn taking-up mechanism according to claim 1, which is characterized in that further include being connected, with the adjustment portion (5) to drive
Move the driving portion (8) that the adjustment portion (5) is rotated relative to casing (10).
3. Yarn taking-up mechanism according to claim 2, which is characterized in that the output shaft of the driving portion (8) is fixedly connected with drive
The other end of dynamic crank (7), one end of driving crank (7) rotation connection drive link (6), the drive link (6) is logical
Cross the second end that the adjustment portion (5) is rotationally connected with the line-choosing connecting rod (4).
4. Yarn taking-up mechanism according to claim 2, which is characterized in that between the driving portion (8) and the adjustment portion (5)
By transmitting band connection.
5. Yarn taking-up mechanism according to claim 3, which is characterized in that the driving portion (8) is specially stepper motor, and/
Or the adjustment portion (5) is specially cam pin.
6. according to Yarn taking-up mechanism described in claim 2 to 5 any one, which is characterized in that the adjustment portion (5) and the drive
Dynamic portion (8) successively extend along the direction far from the thread take-up tension lever (2).
7. according to Yarn taking-up mechanism described in claim 2 to 5 any one, which is characterized in that further include and the driving portion (8)
It is connected, to control the driving portion (8) movement to realize control unit that the adjustment portion (5) is rotated relative to casing (10)
(11)。
8. Yarn taking-up mechanism according to claim 7, which is characterized in that further include be connected with the control unit (11), to
Detect the test section (12) of the thickness of cloth (15)；When the test section (12) detects the thickness change of cloth (15), institute
It states control unit (11) and controls driving portion (8) movement.
9. Yarn taking-up mechanism according to claim 8, which is characterized in that further include be connected with the needle bar crank (9), to
The main shaft (1) for driving the needle bar crank (9) to rotate relative to casing (10).
10. a kind of sewing machine, which is characterized in that including Yarn taking-up mechanism as described in any one of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910008241.3A CN109706640A (en) | 2019-01-04 | 2019-01-04 | A kind of sewing machine and its Yarn taking-up mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910008241.3A CN109706640A (en) | 2019-01-04 | 2019-01-04 | A kind of sewing machine and its Yarn taking-up mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109706640A true CN109706640A (en) | 2019-05-03 |
Family
ID=66260805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910008241.3A Pending CN109706640A (en) | 2019-01-04 | 2019-01-04 | A kind of sewing machine and its Yarn taking-up mechanism |
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| Country | Link |
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| CN (1) | CN109706640A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115538053A (en) * | 2022-10-13 | 2022-12-30 | 百福工业缝纫机（张家港）有限公司 | Intelligent adjustment method and system for thread take-up amount of sewing machine |
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|---|---|---|---|---|
| JPS63296786A (en) * | 1987-05-29 | 1988-12-02 | ブラザー工業株式会社 | Balance apparatus of automatic stitch balancing and thread tension sewing machine |
| CN2154270Y (en) * | 1992-12-24 | 1994-01-26 | 周鹤鸣 | Five-rod raising wire structure with adjustable wire-supply length for sawing machine |
| CN1587480A (en) * | 2004-09-06 | 2005-03-02 | 周鹤鸣 | Crank arm thread take-up mechanism for thick material sewing machine |
| JP2009195449A (en) * | 2008-02-21 | 2009-09-03 | Brother Ind Ltd | Thread take-up device for sewing machine, sewing machine, control program for changing thread take-up lever stroke, and recording medium for changing thread take-up lever stroke |
| CN205636083U (en) * | 2016-04-07 | 2016-10-12 | 浙江中捷缝纫科技有限公司 | Needle bar driving mechanism |
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2019
- 2019-01-04 CN CN201910008241.3A patent/CN109706640A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63296786A (en) * | 1987-05-29 | 1988-12-02 | ブラザー工業株式会社 | Balance apparatus of automatic stitch balancing and thread tension sewing machine |
| CN2154270Y (en) * | 1992-12-24 | 1994-01-26 | 周鹤鸣 | Five-rod raising wire structure with adjustable wire-supply length for sawing machine |
| CN1587480A (en) * | 2004-09-06 | 2005-03-02 | 周鹤鸣 | Crank arm thread take-up mechanism for thick material sewing machine |
| JP2009195449A (en) * | 2008-02-21 | 2009-09-03 | Brother Ind Ltd | Thread take-up device for sewing machine, sewing machine, control program for changing thread take-up lever stroke, and recording medium for changing thread take-up lever stroke |
| CN205636083U (en) * | 2016-04-07 | 2016-10-12 | 浙江中捷缝纫科技有限公司 | Needle bar driving mechanism |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115538053A (en) * | 2022-10-13 | 2022-12-30 | 百福工业缝纫机（张家港）有限公司 | Intelligent adjustment method and system for thread take-up amount of sewing machine |
| CN115538053B (en) * | 2022-10-13 | 2023-10-27 | 百福工业缝纫机（张家港）有限公司 | Intelligent adjustment method and system for thread take-up amount of sewing machine |
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Application publication date: 20190503 |