CN105714485A - Thread trimming mechanism for sewing machine - Google Patents
Thread trimming mechanism for sewing machine Download PDFInfo
- Publication number
- CN105714485A CN105714485A CN201610273567.5A CN201610273567A CN105714485A CN 105714485 A CN105714485 A CN 105714485A CN 201610273567 A CN201610273567 A CN 201610273567A CN 105714485 A CN105714485 A CN 105714485A
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- CN
- China
- Prior art keywords
- sewing machine
- connecting rod
- drive motor
- blade
- hindfoot portion
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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 invention provides a thread trimming mechanism for a sewing machine. The thread trimming mechanism comprises a driving motor, a main driving rod connected with the driving motor, a transmission mechanism and a scissors assembly for finishing thread trimming, wherein the transmission mechanism comprises a plurality of connection rods which are connected in sequence and is divided into a front section part and a rear section part; the front section part is in sliding connection with the rear section part; the rear section part is connected with a resetting mechanism; the first connection rod in the transmission mechanism is connected with the main driving rod; the final connection rod in the transmission mechanism is rotatably positioned on a machine case of the sewing machine; the scissors assembly comprises a tool body capable of moving from front to back; the tool body is connected with the final connection rod; when the driving motor rotates, the tool body is driven by the main driving rod and the final connection rod to stretch out frontwards; and when the driving motor is reset, the resetting mechanism drives the rear section part to reset and the tool body is driven by the final connection rod to move backwards to finish the thread trimming. The whole thread trimming mechanism is simplified and the thread trimming accuracy of the thread trimming mechanism is improved.
Description
Technical field
The present invention relates to sewing machine, particularly relate to the thread cutting mechanism of a kind of use in sewing machine.
Background technology
Chinese patent 201010125265.6 discloses the cutting facility of a kind of sewing machine, arranges the thread tension adjustment unit of the clamp position with any one state in clamping releasing state that are switched to clamping upper thread and bottom line to give tension force on the top of sewing machine main body.Movable blade is advanced in the lower section of needle plate, is retreated, and cuts off upper thread and bottom line.The one end angular displacement of swing arm is loosely connected on sewing machine main body, and the middle part between the other end and one end arranges driven pulley.Cam part is formed elongated hole, utilizes the displacement of cam part to make swing arm to a direction or another deflection displacement.The displacement of the other end of swing arm is passed to thread tension adjustment unit by the 1st connecting portion, and the driving force of drive division is passed to movable blade by the 2nd connecting portion, makes movable blade advance or retreats.The present invention adopts the form of cylinder to be controlled, and owing to pneumatic means need to be equipped with source of the gas, causes huge structure；And pneumatic line is higher for the sealing requirements of joint, pipeline, it is easy to occur to cause the inefficacy of correlation function because of the leakage of gas.And drive mechanism form ratio in cutting facility is relatively decentralized, assembles cumbersome.
Accordingly, it would be desirable to a kind of simple in construction, the thread cutting mechanism of use in sewing machine that is easily assembled.
Summary of the invention
The shortcoming of prior art in view of the above, it is an object of the invention to provide the thread cutting mechanism of a kind of use in sewing machine, is used for the baroque problem of trimming running part in prior art that solves.
For achieving the above object and other relevant purposes, the present invention provides the thread cutting mechanism of a kind of use in sewing machine, comprising:
Drive motor and the main transmission bar being connected with drive motor；
Drive mechanism, including the many connecting rods being sequentially connected, and it is divided into front section and hindfoot portion, front section slides with hindfoot portion and is connected, hindfoot portion is connected with resetting-mechanism, first connecting rod in drive mechanism is connected with described main transmission bar, and the last root link rotatable in drive mechanism is positioned in the casing of sewing machine；
For completing the cutting assemblies of trimming, including the blade that can seesaw, blade is connected with described end root connecting rod, blade is driven to forward extend out by main transmission bar, end root connecting rod when drive motor rotates, when drive motor resets, described resetting-mechanism is driven hindfoot portion to reset and has been drawn back trimming by end root connecting rod drive blade simultaneously.
Preferably, the place of being slidably connected that the casing of described sewing machine is fixedly installed a guide pad, described front section and described hindfoot portion is positioned in the gathering sill of guide pad.
Preferably, described front section is connected particularly as follows: the end of root connecting rod has sliding axle before in adjacent two connecting rods with sliding of hindfoot portion, and the end of rear root connecting rod has strip hole, and described sliding axle is placed in described strip hole and slides along strip hole.
Preferably, described resetting-mechanism includes the back-moving spring being located on another root connecting rod described and the locating part of spacing back-moving spring front end.
Preferably, described drive motor is the motor completing loose ends routing and presser foot lifter in described sewing machine.
As mentioned above, the thread cutting mechanism of the use in sewing machine of the present invention, have the advantages that employing drive motor drives blade to seesaw trimming by drive mechanism, drive mechanism adopts the form of many connection-rod linkages, and by making the pattern that front section is connected with hindfoot portion slip realize stretching out and resetting of blade, the present invention adopts drive motor to replace pneumatic means, and drive mechanism overall simple is reliable, simplify whole thread cutting mechanism, improve the trimming accuracy of thread cutting mechanism.
Accompanying drawing explanation
Fig. 1 is shown as the thread cutting mechanism schematic diagram of the use in sewing machine of the present invention.
Element numbers explanation
1 drive motor
2 main transmission bars
3 blades
31 stroke grooves
4 end root connecting rods
5 third connecting rods
6 second connecting rods
61 strip holes
7 guide pads
8 first connecting rods
81 sliding axles
9 thread tension releasing lever rods
10 back-moving springs
Detailed description of the invention
By particular specific embodiment, embodiments of the present invention being described below, those skilled in the art the content disclosed by this specification can understand other advantages and effect of the present invention easily.
Refer to Fig. 1.Notice, the structure of depicted, ratio, size etc. in this specification institute accompanying drawing, all only in order to coordinate the disclosed content of description, understand for those skilled in the art and read, it is not limited to the enforceable qualifications of the present invention, therefore do not have technical essential meaning, the adjustment of the modification of any structure, the change of proportionate relationship or size, under not affecting effect that the present invention can be generated by and the purpose that can reach, all should still drop in the scope that disclosed technology contents can be contained.Simultaneously, in this specification cited as " on ", D score, "left", "right", " centre " and " one " etc. term, it is merely convenient to understanding of narration, and it is not used to limit the enforceable scope of the present invention, the change of its relativeness or adjustment, changing under technology contents without essence, when being also considered as the enforceable category of the present invention.
As it is shown in figure 1, the present invention provides the thread cutting mechanism of a kind of use in sewing machine, comprising:
Drive motor 1 and the main transmission bar 2 being connected with drive motor；
Drive mechanism, including the many connecting rods being sequentially connected, and it is divided into front section and hindfoot portion, front section slides with hindfoot portion and is connected, hindfoot portion is connected with resetting-mechanism, first connecting rod 8 in drive mechanism is connected with described main transmission bar 2, and last root connecting rod 4 rotational positioning in drive mechanism is in the casing of sewing machine；
For completing the cutting assemblies of trimming, including the blade 3 that can seesaw, blade 3 is connected with described end root connecting rod 4, blade 3 is driven to forward extend out by main transmission bar 2, end root connecting rod 4 when drive motor 1 rotates, when drive motor 1 resets, described resetting-mechanism drives hindfoot portion to reset to drive blade 3 to draw back trimming by end root connecting rod 4 simultaneously.
The present invention adopts drive motor 1 as the power source of thread cutting mechanism, many connection-rod linkages are adopted to form drive mechanism, drive mechanism is divided into forward and backward two parts, and forward and backward two parts are connected by slip form, drive motor rotates and blade can be driven to stretch out, and hindfoot portion is connected with resetting-mechanism, resetting-mechanism drives hindfoot portion reset and then make blade return, complete trimming, whole drive mechanism simple in construction, it is easy to install.
For improving the accuracy of drive mechanism, the casing of above-mentioned sewing machine being fixedly installed a guide pad 7, as shown in Figure 1, the place of being slidably connected of described front section and described hindfoot portion is positioned in the gathering sill of guide pad 7.By the setting of guide pad 7, making the place of being slidably connected be embedded in gathering sill, strengthen the directionality slided, making into slip is linear slide, improves the accuracy of transmission.
Above-mentioned front section is connected particularly as follows: the end of root connecting rod has sliding axle 81 before in adjacent two connecting rods with sliding of hindfoot portion, and the end of rear root connecting rod has strip hole 61, and described sliding axle 81 is placed in described strip hole 61 and slides along strip hole 61.The present embodiment make rear root connecting rod be located in the gathering sill of above-mentioned guide pad 7, it is achieved the location at the place that is slidably connected.Above-mentioned resetting-mechanism includes the back-moving spring 10 being located on another root connecting rod and the locating part of spacing back-moving spring front end, locating part in the present embodiment and above-mentioned guide pad 7, and the front end making back-moving spring 10 is spacing motionless.
Specifically, above-mentioned drive mechanism is sequentially connected is constituted by first connecting rod (i.e. first connecting rod 8), second connecting rod 6, third connecting rod 5 and fourth link (i.e. end root connecting rod 4), in the present embodiment, first connecting rod slides with second connecting rod 6 and is connected, the then front section of first connecting rod and drive mechanism, second connecting rod 6 to fourth link is hindfoot portion, above-mentioned sliding axle 81 is arranged on first connecting rod 8, above-mentioned strip hole 61 is arranged on second connecting rod 6, and back-moving spring 10 is also located on second connecting rod 6.
For improving the precision of trimming, above-mentioned blade 3 having stroke groove 31, casing has keeper, keeper is located in stroke groove, and when blade 3 stretches out or returns, stroke groove coordinates with keeper, it is ensured that the rectilinear motion of blade.
The work process of the thread cutting mechanism of the present invention is: complete after sewing machine stops pin when providing signal demand, as shown in Figure 1, above-mentioned drive motor 1 rotates clockwise and drives second connecting rod 6 level to the left fortune merit by main transmission bar 2 by first connecting rod 8, and then make end root connecting rod 4 rotate clockwise, drive trimming assembly, make blade 3 go out to the right cutter；Drive motor 1 returns back to initial pose, in this return stroke blade 3 under the effect of back-moving spring 10 to the left return simultaneously complete trimming action.
For simplifying the structure of whole sewing machine, above-mentioned drive motor 1 is the motor completing loose ends routing and presser foot lifter in sewing machine, i.e. loose ends routing and presser foot lifter, trimming shares a drive motor 1, namely above-mentioned main transmission bar 2 is also connected with thread tension releasing lever rod 9, thread tension releasing lever rod is connected with loose ends routing assembly and presser foot lifter assembly transmission, then the driving force of drive motor can pass to thread tension releasing lever rod 9, then control loose ends routing assembly and complete loose ends routing, console presser foot component completes presser foot lifter, adopt a drive motor can complete routing Kanematsu line, return cutter trimming, presser foot lifter Kanematsu line action.
In sum, the thread cutting mechanism of the use in sewing machine of the present invention, adopts drive motor as the power source of thread cutting mechanism, adopts many connection-rod linkages to form drive mechanism, drive mechanism is divided into forward and backward two parts, and forward and backward two parts are connected by slip form, drive motor rotates and blade can be driven to stretch out, and hindfoot portion is connected with resetting-mechanism, resetting-mechanism drives hindfoot portion reset and then make blade return, complete trimming, whole drive mechanism simple in construction, it is easy to install.So, the present invention effectively overcomes various shortcoming of the prior art and has high industrial utilization.
Above-described embodiment is illustrative principles of the invention and effect thereof only, not for the restriction present invention.Above-described embodiment all under the spirit and category of the present invention, can be modified or change by any those skilled in the art.Therefore, art has usually intellectual such as modifying without departing from all equivalences completed under disclosed spirit and technological thought or change, must be contained by the claim of the present invention.
Claims (5)
1. the thread cutting mechanism of a use in sewing machine, it is characterised in that including:
Drive motor (1) and the main transmission bar (2) being connected with drive motor (1)；
Drive mechanism, including the many connecting rods being sequentially connected, and it is divided into front section and hindfoot portion, front section slides with hindfoot portion and is connected, hindfoot portion is connected with resetting-mechanism, first connecting rod (8) in drive mechanism is connected with described main transmission bar (2), and last root connecting rod (4) rotational positioning in drive mechanism is in the casing of sewing machine；
For completing the cutting assemblies of trimming, including the blade (3) that can seesaw, blade (3) is connected with described end root connecting rod (4), blade (3) is driven to forward extend out by main transmission bar (2), end root connecting rod (4) when drive motor (1) rotates, when drive motor (1) resets, described resetting-mechanism drives hindfoot portion to reset to drive blade (3) to draw back trimming by end root connecting rod (4) simultaneously.
2. the thread cutting mechanism of use in sewing machine according to claim 1, it is characterized in that: the place of being slidably connected being fixedly installed a guide pad (7), described front section and described hindfoot portion in the casing of described sewing machine is positioned in the gathering sill of guide pad (7).
3. the thread cutting mechanism of use in sewing machine according to claim 1, it is characterized in that: described front section is connected particularly as follows: the end of root connecting rod has sliding axle (81) before in adjacent two connecting rods with sliding of hindfoot portion, the end of rear connecting rod has strip hole (61), and described sliding axle (81) is placed in described strip hole (61) and slides along strip hole (61).
4. the thread cutting mechanism of use in sewing machine according to claim 3, it is characterised in that: described resetting-mechanism includes the back-moving spring (10) being located on another root connecting rod described and the locating part of spacing back-moving spring front end.
5. the thread cutting mechanism of use in sewing machine according to claim 1, it is characterised in that: described drive motor (1) is for completing the motor of loose ends routing and presser foot lifter in described sewing machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610273567.5A CN105714485B (en) | 2016-04-28 | 2016-04-28 | The thread cutting mechanism of use in sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610273567.5A CN105714485B (en) | 2016-04-28 | 2016-04-28 | The thread cutting mechanism of use in sewing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105714485A true CN105714485A (en) | 2016-06-29 |
| CN105714485B CN105714485B (en) | 2019-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610273567.5A Active CN105714485B (en) | 2016-04-28 | 2016-04-28 | The thread cutting mechanism of use in sewing machine |
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| CN (1) | CN105714485B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108394754A (en) * | 2018-05-04 | 2018-08-14 | 山东东威仕智能装备科技有限公司 | The yarn cutting mechanism of bobbin-winding machine |
| CN113235231A (en) * | 2019-10-12 | 2021-08-10 | 杰克缝纫机股份有限公司 | Thread trimming and presser foot lifting mechanism and overedger |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201620263U (en) * | 2010-02-26 | 2010-11-03 | 顾飞龙 | Thread cutting structure of extending wrist type industrial sewing machine |
| CN203960525U (en) * | 2014-06-24 | 2014-11-26 | 台州拓卡奔马机电科技有限公司 | The driving mechanism that a kind of routing and presser foot lifter trimming are used and a kind of lockstitch button holder |
| CN204570210U (en) * | 2015-03-17 | 2015-08-19 | 浙江中捷缝纫科技有限公司 | A kind of thread cutting mechanism of Sewing machines |
| CN104862891A (en) * | 2015-06-17 | 2015-08-26 | 浙江中捷缝纫科技有限公司 | Thread shearing mechanism of sewing machine |
| CN204959274U (en) * | 2015-09-19 | 2016-01-13 | 浙江中捷缝纫科技有限公司 | Flush joint machine prevent bird's nest structure |
| CN204982332U (en) * | 2015-08-12 | 2016-01-20 | 台州通宇服装机械科技有限公司 | Thread cutting mechanism of double-needle sewing machine |
| CN105420948A (en) * | 2015-12-29 | 2016-03-23 | 杰克缝纫机股份有限公司 | Thread trimming mechanism driving device for sewing machine |
-
2016
- 2016-04-28 CN CN201610273567.5A patent/CN105714485B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201620263U (en) * | 2010-02-26 | 2010-11-03 | 顾飞龙 | Thread cutting structure of extending wrist type industrial sewing machine |
| CN203960525U (en) * | 2014-06-24 | 2014-11-26 | 台州拓卡奔马机电科技有限公司 | The driving mechanism that a kind of routing and presser foot lifter trimming are used and a kind of lockstitch button holder |
| CN204570210U (en) * | 2015-03-17 | 2015-08-19 | 浙江中捷缝纫科技有限公司 | A kind of thread cutting mechanism of Sewing machines |
| CN104862891A (en) * | 2015-06-17 | 2015-08-26 | 浙江中捷缝纫科技有限公司 | Thread shearing mechanism of sewing machine |
| CN204982332U (en) * | 2015-08-12 | 2016-01-20 | 台州通宇服装机械科技有限公司 | Thread cutting mechanism of double-needle sewing machine |
| CN204959274U (en) * | 2015-09-19 | 2016-01-13 | 浙江中捷缝纫科技有限公司 | Flush joint machine prevent bird's nest structure |
| CN105420948A (en) * | 2015-12-29 | 2016-03-23 | 杰克缝纫机股份有限公司 | Thread trimming mechanism driving device for sewing machine |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108394754A (en) * | 2018-05-04 | 2018-08-14 | 山东东威仕智能装备科技有限公司 | The yarn cutting mechanism of bobbin-winding machine |
| CN108394754B (en) * | 2018-05-04 | 2023-09-15 | 山东东威仕智能装备科技有限公司 | Yarn cutting mechanism of cone winder |
| CN113235231A (en) * | 2019-10-12 | 2021-08-10 | 杰克缝纫机股份有限公司 | Thread trimming and presser foot lifting mechanism and overedger |
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| Publication number | Publication date |
|---|---|
| CN105714485B (en) | 2019-03-22 |
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Address after: 318010 No. 1008, east section of Donghai Avenue, Sanjia, Jiaojiang District, Taizhou City, Zhejiang Province Patentee after: Jack Technology Co.,Ltd. Address before: 318010 No. 15 Airport South Road, Jiaojiang District, Zhejiang, Taizhou Patentee before: JACK SEWING MACHINE Co.,Ltd. |