CN109881384A - A kind of sewing machine manually adjusting thread take up lever stroke - Google Patents
A kind of sewing machine manually adjusting thread take up lever stroke Download PDFInfo
- Publication number
- CN109881384A CN109881384A CN201910192079.5A CN201910192079A CN109881384A CN 109881384 A CN109881384 A CN 109881384A CN 201910192079 A CN201910192079 A CN 201910192079A CN 109881384 A CN109881384 A CN 109881384A
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- China
- Prior art keywords
- connecting rod
- pin
- line
- thread take
- sewing machine
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Abstract
The invention discloses a kind of sewing machines for manually adjusting thread take up lever stroke comprising casing, thread take-up tension lever, line-choosing connecting rod pin, line-choosing connecting rod, cam pin connecting rod, connection pin and stroke adjustment knob.Line-choosing connecting rod pin and casing are hinged；One end of line-choosing connecting rod and thread take-up tension lever are hinged, and the other end and line-choosing connecting rod pin of line-choosing connecting rod are hinged；It connects and pin is installed on the rear wall of pin, the other end of pin and cam pin connecting rod is hinged, and the other end and line-choosing connecting rod pin of cam pin connecting rod are hinged；Stroke adjustment knob is plugged in connection pin；Stroke adjustment knob is mounted on casing, and the lower end rotation of stroke adjustment knob is plugged in connection pin.The present invention is by manually controlling the movement of stroke adjustment knob, to change the eccentric position of line-choosing connecting rod pin, to reach the take-up motion profile for adjusting thread take-up tension lever, so as to cause the variation for line amount.The variation range for line amount of thread take-up tension lever of the present invention is bigger, more finely.
Description
Technical field
The present invention relates to thread ran of sewing machine stroke adjustment technical field, specially a kind of thread take up lever stroke that manually adjusts
Sewing machine.
Background technique
Conventional sewing machine is related with thread take up lever stroke in Yarn taking-up mechanism for the adaptability for fabric thickness of sewing.But it chooses at present
Because mechanism size is fixed, thread take-up tension lever can not be adjusted for line amount for line mechanism and its attachment, or the range of adjustment is extremely limited.Some
Thread take-up tension lever changes thread take up lever stroke, but the limited amount in hole by the way that multiple holes are arranged, and the variation for line amount is also not very big.Or
Person reaches the adjustable purpose of take-up lever stroke, but the panel that needs to dismantle by going manually by increasing line-choosing connecting rod pin guide surface
It adjusts.And the increased positioning plane quantity of line-choosing connecting rod pin is since structure limits, the take-up lever stroke knots modification ten that can be realized
Divide limited.These factors limit sewing machine for the adaptability for fabric thickness of sewing.Since for thin material, less confession
Line amount just can guarantee stitching grace.And thick material then needs more just to can guarantee the failures such as do not break for line amount.Sewing machine for
The sewing bad adaptability of thin and thick material, on the one hand improves the purchase cost of enterprise, on the other hand also reduces sewing device itself
Competitiveness.
Summary of the invention
The purpose of the present invention is to provide a kind of sewing machines for manually adjusting thread take up lever stroke, to solve existing sewing machine not
It can be according to the thin and thick of sewing fabric, to change the problem of thread take-up tension lever is for line amount.
To achieve the above object, the invention provides the following technical scheme: a kind of sewing machine for manually adjusting thread take up lever stroke,
Comprising:
Casing；
Thread take-up tension lever；
The sewing machine further include:
Line-choosing connecting rod pin, one end of the line-choosing connecting rod pin and the casing are hinged, and the line-choosing connecting rod pin is in bias
Structure；
Line-choosing connecting rod, one end of the line-choosing connecting rod and the thread take-up tension lever are hinged, the other end of the line-choosing connecting rod and institute
It is hinged to state line-choosing connecting rod pin；
Spiral vice mechanism, setting is on the housing for adjusting the eccentric position of the line-choosing connecting rod pin；
Cam pin connecting rod, one end of the cam pin connecting rod are connect with the spiral vice mechanism, the cam pin connecting rod
The other end and the line-choosing connecting rod pin are hinged；
Wherein, the spiral vice mechanism includes:
Pin is connected, pin, the pin and the cam pin connecting rod are installed on the rear wall of the connection pin
The other end is hinged；
Stroke adjustment knob, the stroke adjustment knob are installed on the housing, and under the stroke adjustment knob
End rotation is plugged in the connection pin.
Preferably, the spiral vice mechanism further include:
Stroke adjustment nut is connect with the stroke adjustment knob thread, and the stroke adjustment nut is mounted on described
On casing.
Preferably, the lower end of the stroke adjustment knob offers jump-ring slot, and the jump-ring slot is located at the connection pin
Lower section, the spiral vice mechanism further include:
Circlip one is inlayed and is mounted in the jump-ring slot.
Preferably, the sewing machine further include:
The front end of the line-choosing connecting rod pin is arranged in circlip two.
Preferably, the lower end of the stroke adjustment knob offers step surface, and the step surface is located at the connection pin
Inside.
Preferably, cable-through hole is offered on one end of the thread take-up tension lever.
Preferably, it is carved on the stroke adjustment knob and is equipped with graduated scale.
Preferably, the sewing machine further include:
Needle bar crank, one end of the needle bar crank and the casing are hinged, the other end of the needle bar crank with it is described
The other end of thread take-up tension lever is hinged.
Preferably, one end of the needle bar crank is hinged by a main shaft and the casing.
Preferably, the other end of the needle bar crank is hinged by the other end of a bearing and the thread take-up tension lever.
Compared with prior art, the beneficial effects of the present invention are:
1, the movement of the invention by manually controlling stroke adjustment knob, to change the eccentric position of line-choosing connecting rod pin, with
Reach the take-up motion profile for adjusting thread take-up tension lever, so as to cause the variation for line amount.The variation for line amount of thread take-up tension lever of the present invention
Range is bigger, more finely, is able to satisfy the adjusting to different clothes for line amount, improves adaptation of the sewing machine to different fabrics thickness
Property.
2, relative to stepping take-up scheme, structure of the invention is simpler, and cost is less expensive, can be in current nearly all machine
It is applied in type.There is very big competitive advantage especially on some low and middle-end types.
3, it is additionally provided with graduated scale on the stroke adjustment knob in the present invention, can be voluntarily gone according to fabric thickness situation
Journey setting.Operation is set more to save worry, it is more convenient.
4, mechanism setting through the invention can increase the adaptability of sewing machine operating condition, at the same also reduce the buying of enterprise at
This, improves the competitiveness of sewing device.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
Fig. 2 is structure of the invention side view；
Fig. 3 is casing structure schematic diagram；
Fig. 4 is structure of the invention working principle schematic diagram.
In figure: casing 1, stroke adjustment knob 2, connection pin 3, circlip 1, circlip 25, line-choosing connecting rod pin 6, shank are bent
Handle 7, main shaft 8, bearing 9, thread take-up tension lever 10, cable-through hole 10-1, line-choosing connecting rod 11, cam pin connecting rod 12, stroke adjustment nut 13.
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.
With reference to Fig. 1-3, the present embodiment provides a kind of sewing machines for manually adjusting thread take up lever stroke comprising casing 1, take-up
Link pin 6, needle bar crank 7, main shaft 8, bearing 9, thread take-up tension lever 10, line-choosing connecting rod 11, cam pin connecting rod 12 and spiral vice mechanism.
Wherein, one end of needle bar crank 7 and casing 1 are hinged, and the other end of needle bar crank 7 and the other end of thread take-up tension lever 10 are cut with scissors
It connects.Cable-through hole 10-1 is offered on one end of thread take-up tension lever 10.Upper thread when sewing machine works passes through cable-through hole 10-1.In this implementation
In example, one end of needle bar crank 7 is hinged by a main shaft 8 and casing 1, the other end of needle bar crank 7 by a bearing 9 with
The other end of thread take-up tension lever 10 is hinged.One end of line-choosing connecting rod 11 and thread take-up tension lever 10 are hinged, the other end and take-up of line-choosing connecting rod 11
Link pin 6 is hinged.One end of line-choosing connecting rod pin 6 and casing 1 are hinged.And line-choosing connecting rod pin 6 is in eccentric structure.
Sewing machine is in sewing cycle, the need that be slightly larger than thorn cloth mechanism and string-hooking mechanism always for line amount of Yarn taking-up mechanism
Line amount.In actual operation, maximum to need the difference of line amount to be advisable with 5mm for line amount and maximum for thin material；With regard to thickness material
Speech, the difference are advisable with 8mm.When maximum needs one timing of line amount, size of the difference can be controlled by changing maximum for line amount.And it is maximum
It is determined for line amount by the cable-through hole 10-1 motion profile on thread take-up tension lever 10.It therefore, only need to be by regulating and controlling cable-through hole in the present embodiment
The motion profile of 10-1, so that it may change maximum for line amount, to adapt to the thin and thick of different fabrics.Specifically, can in the present embodiment
Regulate and control the motion profile of cable-through hole 10-1 by spiral vice mechanism.It is chosen that is, spiral vice mechanism is arranged on casing 1 for adjusting
The eccentric position of line link pin 6.One end of cam pin connecting rod 12 is connect with spiral vice mechanism.The other end of cam pin connecting rod 12 with
Line-choosing connecting rod pin 6 is hinged.
Spiral vice mechanism includes stroke adjustment knob 2, connection pin 3, stroke adjustment nut 13 and circlip 1.
Wherein, it connects and pin is installed on the rear wall of pin 3.The other end of pin and cam pin connecting rod 12 is hinged.Row
Journey adjusting knob 2 is mounted on casing 1.And the lower end rotation of stroke adjustment knob 2 is plugged in connection pin 3.Specifically,
Stroke adjustment knob 2 is mounted on the method on casing 1 in the present embodiment are as follows: stroke adjustment nut 13 and 2 spiral shell of stroke adjustment knob
Line connection.Stroke adjustment nut 13 is mounted on casing 1.The lower end of stroke adjustment knob 2 offers jump-ring slot.Jump-ring slot is located at
Connect the lower section of pin 3.Circlip 1, which is inlayed, to be mounted in jump-ring slot.And the lower end of stroke adjustment knob 2 offers step surface.
Step surface is located at the inside of connection pin 3.In the present embodiment, the axis of connection pin 3 is limited jointly by circlip 1 and step surface
To displacement.It, can also be on line-choosing connecting rod pin 6 in the present embodiment for the axial movement for limiting line-choosing connecting rod 11 and cam pin connecting rod 12
Circlip 25 is set.I.e. sewing machine further includes circlip 25.The front end of line-choosing connecting rod pin 6 is arranged in circlip 25.
In the present embodiment, during the work time, the rotation of main shaft 8 drives thread take-up tension lever 10 to move to sewing machine.On thread take-up tension lever 10
The movement of take-up up and down that willow leaf shape motion profile is made at cable-through hole 10-1, makes upper thread in the upper and lower displacement of shank, has corresponding
Pumping tightly and loosen, to form perfect stitching.Distance at the highs and lows of take-up motion profile is thread take-up tension lever 10
Supply the stroke of suture.When the position of line-choosing connecting rod pin 6 determines, take-up motion profile is determining.It can by foregoing description
Know, the take-up motion profile of cable-through hole 10-1 can be changed by the position of change line-choosing connecting rod pin 6 in the present embodiment, after
And change thread take-up tension lever 10 for line amount.
Change the method for the position of line-choosing connecting rod pin 6 in the present embodiment are as follows: rotate upwardly and downwardly stroke adjustment knob 2 manually, lead to
Cross the rotation that cam pin connecting rod 12 makes line-choosing connecting rod pin 6 that different angle occur.Make 10 end cable-through hole 10- of thread take-up tension lever in this way
The stroke of 1 the highest point and the lowest point is regulated and controled, so as to according to the fabric of different-thickness regulate and control cloth for line amount.Pass through
Method in the present embodiment can increase the adaptability of sewing machine operating condition, reduce the purchase cost of enterprise, promote the competing of sewing device
Strive power.
With reference to Fig. 4, specifically, then stroke adjustment knob 2 is twisted towards the direction moved upwards when the sewing encountered is relatively thin
It is dynamic.Connection pin 3 shifts up together with stroke adjustment knob 2, and cam pin connecting rod 12 is driven to rotate clockwise certain angle
Degree.Cam pin connecting rod 12 causes the corresponding angle of 6 clockwise oscillation of line-choosing connecting rod pin simultaneously.At this point, line-choosing connecting rod 11 and take-up
The position of 6 hinged place of link pin shifts, and the stroke of 10 end cable-through hole 10-1 the highest point and the lowest point of thread take-up tension lever is caused to become
It is small, it is maximum to be reduced for line amount, to ensure that stitching when sewing thin material is beautiful.
When the sewing encountered is thicker, then stroke adjustment knob 2 is turned towards the direction moved downward.Connect pin 3 with
Stroke adjustment knob 2 together to bottom offset, drive cam pin connecting rod 12 to rotate by a certain angle counterclockwise.Cam pin connecting rod 12 is same
The 6 corresponding angle of counter-clockwise swing of Shi Yinqi line-choosing connecting rod pin.At this point, the position of line-choosing connecting rod 11 and 6 hinged place of line-choosing connecting rod pin
It sets and shifts, the stroke of 10 end cable-through hole 10-1 the highest point and the lowest point of thread take-up tension lever is caused to become larger, it is maximum to increase for line amount,
To which stitching when ensure that the thin material of sewing is beautiful.
In some embodiments, it can also be carved equipped with graduated scale on one section of the exposing of stroke adjustment knob 2 casing 1.In this way
Under the reference of stroke adjustment nut 13, the depth that stroke adjustment knob 2 is screwed into casing 1 can display real-time.Meanwhile in some realities
It applies in example, can also be manually adjusted by the automatically controlled movement for automatically controlling linear motor driving trip adjusting knob 2 with substitution.
It although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, can be with
A variety of variations, modification, replacement can be carried out to these embodiments without departing from the principles and spirit of the present invention by understanding
And modification, the scope of the present invention is defined by the appended.
Claims (10)
1. a kind of sewing machine for manually adjusting thread take up lever stroke comprising:
Casing (1)；
Thread take-up tension lever (10)；
It is characterized in that, the sewing machine further include:
Line-choosing connecting rod pin (6), one end of the line-choosing connecting rod pin (6) and the casing (1) hingedly, and the line-choosing connecting rod pin
It (6) is in eccentric structure；
Line-choosing connecting rod (11), one end of the line-choosing connecting rod (11) and the thread take-up tension lever (10) hingedly, the line-choosing connecting rod (11)
The other end and the line-choosing connecting rod pin (6) it is hinged；
The eccentric position for adjusting the line-choosing connecting rod pin (6) is arranged on the casing (1) in spiral vice mechanism；
One end of cam pin connecting rod (12), the cam pin connecting rod (12) is connect with the spiral vice mechanism, and the cam pin connects
The other end of bar (12) and the line-choosing connecting rod pin (6) are hinged；
Wherein, the spiral vice mechanism includes:
It connects pin (3), pin, the pin and the cam pin connecting rod is installed on the rear wall of connection pin (3)
(12) the other end is hinged；
Stroke adjustment knob (2), the stroke adjustment knob (2) is mounted on the casing (1), and the stroke adjustment knob
(2) lower end rotation is plugged in the connection pin (3).
2. the sewing machine according to claim 1 for manually adjusting thread take up lever stroke, which is characterized in that the spiral vice mechanism
Further include:
Stroke adjustment nut (13) is threadedly coupled with the stroke adjustment knob (2), stroke adjustment nut (13) installation
On the casing (1).
3. the sewing machine according to claim 1 for manually adjusting thread take up lever stroke, which is characterized in that the stroke adjustment rotation
The lower end of button (2) offers jump-ring slot, and the jump-ring slot is located at the lower section of connection pin (3), and the spiral vice mechanism is also
Include:
Circlip one (4) is inlayed and is mounted in the jump-ring slot.
4. the sewing machine according to claim 1 for manually adjusting thread take up lever stroke, which is characterized in that the sewing machine also wraps
It includes:
Circlip two (5) is arranged in the front end of the line-choosing connecting rod pin (6).
5. the sewing machine according to claim 1 for manually adjusting thread take up lever stroke, which is characterized in that the stroke adjustment rotation
The lower end of button (2) offers step surface, and the step surface is located at the inside of connection pin (3).
6. the sewing machine according to claim 1 for manually adjusting thread take up lever stroke, which is characterized in that the thread take-up tension lever (10)
One end on offer cable-through hole (10-1).
7. the sewing machine according to claim 1 for manually adjusting thread take up lever stroke, which is characterized in that the stroke adjustment rotation
It is carved on button (2) and is equipped with graduated scale.
8. the sewing machine according to claim 1 for manually adjusting thread take up lever stroke, which is characterized in that the sewing machine also wraps
It includes:
Needle bar crank (7), one end of the needle bar crank (7) and the casing (1) hingedly, the needle bar crank (7) it is another
It holds hinged with the other end of the thread take-up tension lever (10).
9. the sewing machine according to claim 8 for manually adjusting thread take up lever stroke, which is characterized in that the needle bar crank
(7) one end is hinged by a main shaft (8) and the casing (1).
10. the sewing machine according to claim 8 for manually adjusting thread take up lever stroke, which is characterized in that the needle bar crank
(7) the other end is hinged by a bearing (9) and the other end of the thread take-up tension lever (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910192079.5A CN109881384B (en) | 2019-03-14 | 2019-03-14 | Sewing machine capable of manually adjusting stroke of take-up lever |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910192079.5A CN109881384B (en) | 2019-03-14 | 2019-03-14 | Sewing machine capable of manually adjusting stroke of take-up lever |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109881384A true CN109881384A (en) | 2019-06-14 |
| CN109881384B CN109881384B (en) | 2021-02-02 |
Family
ID=66932202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910192079.5A Active CN109881384B (en) | 2019-03-14 | 2019-03-14 | Sewing machine capable of manually adjusting stroke of take-up lever |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109881384B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114197120A (en) * | 2020-09-18 | 2022-03-18 | 杰克科技股份有限公司 | Thread take-up synchronous adjusting mechanism of flat seaming machine |
| TWI769654B (en) * | 2021-01-06 | 2022-07-01 | 啟翔股份有限公司 | Sewing machine with changeable lifting lever |
Citations (6)
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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 |
| CN109402885A (en) * | 2018-11-28 | 2019-03-01 | 杰克缝纫机股份有限公司 | The Yarn taking-up mechanism and sewing machine of use in sewing machine |
-
2019
- 2019-03-14 CN CN201910192079.5A patent/CN109881384B/en active Active
Patent Citations (6)
| 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 |
| CN109402885A (en) * | 2018-11-28 | 2019-03-01 | 杰克缝纫机股份有限公司 | The Yarn taking-up mechanism and sewing machine of use in sewing machine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114197120A (en) * | 2020-09-18 | 2022-03-18 | 杰克科技股份有限公司 | Thread take-up synchronous adjusting mechanism of flat seaming machine |
| CN114197120B (en) * | 2020-09-18 | 2023-08-11 | 杰克科技股份有限公司 | Thread take-up synchronous regulating mechanism of flat seaming machine |
| TWI769654B (en) * | 2021-01-06 | 2022-07-01 | 啟翔股份有限公司 | Sewing machine with changeable lifting lever |
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| Publication number | Publication date |
|---|---|
| CN109881384B (en) | 2021-02-02 |
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Address after: 318000 No. 15 Airport South Road, Jiaojiang District, Zhejiang, Taizhou Patentee after: Jack Technology Co.,Ltd. Address before: 318000 No. 15 Airport South Road, Jiaojiang District, Zhejiang, Taizhou Patentee before: JACK SEWING MACHINE Co.,Ltd. |
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Address after: 318000 no.1008, east section of Donghai Avenue, Sanjia, Jiaojiang District, Taizhou City, Zhejiang Province Patentee after: Jack Technology Co.,Ltd. Address before: 318000 No. 15 Airport South Road, Jiaojiang District, Zhejiang, Taizhou Patentee before: Jack Technology Co.,Ltd. |