CN105714485B - The thread cutting mechanism of use in sewing machine - Google Patents
The thread cutting mechanism of use in sewing machine Download PDFInfo
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- CN105714485B CN105714485B CN201610273567.5A CN201610273567A CN105714485B CN 105714485 B CN105714485 B CN 105714485B CN 201610273567 A CN201610273567 A CN 201610273567A CN 105714485 B CN105714485 B CN 105714485B
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- connecting rod
- sewing machine
- driving motor
- blade
- thread cutting
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B65/00—Devices for severing the needle or lower thread
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The present invention provides a kind of thread cutting mechanism of use in sewing machine comprising: driving motor and the main transmission bar being connected with driving motor；Transmission mechanism, the connecting rod being sequentially connected including more, and it is divided into front section and hindfoot portion, front section is connected with hindfoot portion sliding, hindfoot portion is connected with resetting-mechanism, first connecting rod in transmission mechanism is connected with the main transmission bar, and the last root link rotatable in transmission mechanism is located on the casing of sewing machine；For completing the cutting assemblies of trimming, including the blade that can be moved forward and backward, blade is connected with the last root connecting rod, blade is driven to forward extend out by main transmission bar, last root connecting rod when driving motor rotates, when driving motor resets, the resetting-mechanism, which drives hindfoot portion to reset while driving blade to draw back by last root connecting rod, completes trimming.This invention simplifies entire thread cutting mechanisms, improve the trimming accuracy of thread cutting mechanism.
Description
Technical field
The present invention relates to sewing machines, more particularly to a kind of thread cutting mechanism of use in sewing machine.
Background technique
Chinese patent 201010125265.6 discloses a kind of cutting facility of sewing machine, is arranged on the top of sewing machine main body
It is switched to the suture of any state in the clamp position and grip release state of clamping upper thread and baseline to assign tension
Power adjustment unit.Movable blade cuts upper thread and baseline in the advance of the lower section of needle plate, retrogressing.The one end angular displacement of swing arm is certainly
It is connected on sewing machine main body by ground, driven wheel is arranged in the intermediate position between the other end and one end.In cam part
Upper formation long hole makes swing arm to a direction or another direction angular displacement using the displacement of cam part.1st interconnecting piece will be put
The displacement of the other end of arm passes to thread tension adjustment unit, and the 2nd interconnecting piece passes to the driving force of driving portion movably
Blade moves forward or back movable blade.The present invention is controlled in the form of cylinder, since pneumatic device need to be equipped with gas
Source causes huge structure；And pneumatic line is relatively high for the sealing requirements of connector, pipeline, is easy to happen letting out because of gas
Dew leads to the failure of correlation function.And the drive mechanism form in cutting facility is more dispersed, assembles more troublesome.
A kind of thread cutting mechanism for the use in sewing machine that therefore, it is necessary to structures simply, be easily assembled.
Summary of the invention
In view of the foregoing deficiencies of prior art, the purpose of the present invention is to provide a kind of thread trimmers of use in sewing machine
Structure, for solving the problems, such as that structure is complicated for trimming running part in the prior art.
In order to achieve the above objects and other related objects, the present invention provides a kind of thread cutting mechanism of use in sewing machine comprising:
Driving motor and the main transmission bar being connected with driving motor；
Transmission mechanism, the connecting rod being sequentially connected including more, and it is divided into front section and hindfoot portion, front section is with after
Section part, which is slided, to be connected, and hindfoot portion is connected with resetting-mechanism, and first connecting rod in transmission mechanism is connected with the main transmission bar,
Last root link rotatable in transmission mechanism is located on the casing of sewing machine；
For completing the cutting assemblies of trimming, including the blade that can be moved forward and backward, blade is connected with the last root connecting rod, drives
Blade is driven to forward extend out by main transmission bar, last root connecting rod when dynamic motor rotation, when driving motor resets, the resetting-mechanism
It drives hindfoot portion to reset while driving blade to draw back by last root connecting rod and complete trimming.
Preferably, a guide pad, the front section and the hindfoot portion are fixedly installed on the casing of the sewing machine
The place of being slidably connected be located in the guide groove of guide pad.
Preferably, the front section is connected with the sliding of hindfoot portion specifically: preceding root connecting rod in adjacent two connecting rods
End there is sliding axle, the end of rear root connecting rod has strip hole, and the sliding axle is placed in the strip hole along strip hole
Sliding.
Preferably, the resetting-mechanism includes the reset spring being threaded through on another connecting rod, and limit resets
The locating part of spring at front end.
Preferably, the driving motor is the motor that loose ends routing and presser foot lifter are completed in the sewing machine.
As described above, the thread cutting mechanism of use in sewing machine of the invention, is had the advantages that and is passed through using driving motor
Transmission mechanism completes trimming to drive blade to move forward and backward, transmission mechanism use more connection-rod linkages form, and by making before
The mode that section part is connected with hindfoot portion sliding realizes the stretching and reset of blade, and the present invention is replaced pneumatic using driving motor
Device, transmission mechanism overall simple is reliable, simplifies entire thread cutting mechanism, improves the trimming accuracy of thread cutting mechanism.
Detailed description of the invention
Fig. 1 is shown as the thread cutting mechanism schematic diagram of use in sewing machine of the invention.
Component label instructions
1 driving motor
2 main transmission bars
3 blades
31 stroke grooves
4 last 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 reset springs
Specific embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation
Content disclosed by book is understood other advantages and efficacy of the present invention easily.
Please refer to Fig. 1.It should be clear that structure, ratio, size etc. depicted in this specification institute attached drawing, only to cooperate
The revealed content of specification is not intended to limit the invention enforceable so that those skilled in the art understands and reads
Qualifications, therefore do not have technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size,
It does not influence still fall in disclosed technology contents under the effect of present invention can be generated and the purpose that can reach
In the range of capable of covering.Meanwhile cited such as "upper", "lower", "left", "right", " centre " and " one " in this specification
Term, be merely convenient to being illustrated for narration, rather than to limit the scope of the invention, the change of relativeness or
Adjustment, under the content of no substantial changes in technology, when being also considered as the enforceable scope of the present invention.
As shown in Figure 1, the present invention provides a kind of thread cutting mechanism of use in sewing machine comprising:
Driving motor 1 and the main transmission bar 2 being connected with driving motor；
Transmission mechanism, the connecting rod being sequentially connected including more, and it is divided into front section and hindfoot portion, front section is with after
Section part, which is slided, to be connected, and hindfoot portion is connected with resetting-mechanism, first connecting rod 8 in transmission mechanism and 2 phase of main transmission bar
Even, last 4 rotational positioning of root connecting rod in transmission mechanism is on the casing of sewing machine；
For completing the cutting assemblies of trimming, including the blade 3 that can be moved forward and backward, blade 3 and last 4 phase of root connecting rod
Even, blade 3 is driven to forward extend out by main transmission bar 2, last root connecting rod 4 when driving motor 1 rotates, when driving motor 1 resets, institute
It states resetting-mechanism drive hindfoot portion reset while driving blade 3 to draw back by last root connecting rod 4 and complete trimming.
The present invention uses power source of the driving motor 1 as thread cutting mechanism, forms transmission mechanism using more connection-rod linkages,
Transmission mechanism is divided into forward and backward two parts, and forward and backward two parts, by being slideably connected, driving motor rotation can be with moving knife
Body stretches out, and hindfoot portion is connected with resetting-mechanism, and resetting-mechanism drives hindfoot portion to reset and then retracts blade, completes to cut
Line, entire transmission mechanism structure is simple, is easily installed.
For the accuracy for improving transmission mechanism, a guide pad 7 is fixedly installed on the casing of above-mentioned sewing machine, as shown in Figure 1,
The place of being slidably connected of the front section and the hindfoot portion is located in the guide groove of guide pad 7.Pass through setting for guide pad 7
It sets, is embedded in the place of being slidably connected in guide groove, reinforce the directionality of sliding, making into sliding is linear slide, improves transmission
Accuracy.
Above-mentioned front section is connected with the sliding of hindfoot portion specifically: the end tool of preceding root connecting rod in adjacent two connecting rods
There is sliding axle 81, the end of rear root connecting rod has strip hole 61, and the sliding axle 81 is placed in the strip hole 61 along strip hole
61 slidings.It is threaded through rear root connecting rod in the guide groove of above-mentioned guide pad 7, realizes the positioning at the place that is slidably connected.
Above-mentioned resetting-mechanism includes the reset spring 10 being threaded through on another connecting rod, and the locating part of limit reset spring front end,
Locating part, that is, above-mentioned guide pad 7 in the present embodiment limits the front end of reset spring 10 motionless.
Specifically, above-mentioned transmission mechanism is by first connecting rod (i.e. first connecting rod 8), second connecting rod 6, third connecting rod 5 and the 4th
Connecting rod (i.e. last root connecting rod 4) is sequentially connected composition, and first connecting rod is connected with the sliding of second connecting rod 6 in the present embodiment, then first connects
Bar, that is, transmission mechanism front section, second connecting rod 6 to fourth link are hindfoot portion, and the above-mentioned setting of sliding axle 81 connects first
On bar 8, above-mentioned strip hole 61 is arranged on second connecting rod 6, and reset spring 10 is also threaded through 6 on second connecting rod.
For the precision for improving trimming, there is on above-mentioned blade 3 stroke groove 31, there is locating piece on casing, locating piece is worn
It is located in stroke groove, when blade 3 is stretched out or retracted, stroke groove and locating piece cooperate, and guarantee the linear motion of blade.
The course of work of thread cutting mechanism of the invention are as follows: after providing signal and needing to complete sewing machine to stop needle, such as Fig. 1 institute
Show, above-mentioned driving motor 1, which is rotated clockwise, drives the horizontal fortune to the left of second connecting rod 6 by first connecting rod 8 by main transmission bar 2
Function, and then last root connecting rod 4 is rotated clockwise, trimming component is driven, blade 3 is made to go out knife to the right；Driving motor 1 returns back to initially
Pose, return is completed at the same time trimming action to blade 3 to the left under the action of reset spring 10 in this return stroke.
For the structure of the entire sewing machine of simplification, above-mentioned driving motor 1 is that loose ends routing and presser foot lifter are completed in sewing machine
Motor, i.e. loose ends routing and presser foot lifter, trimming share a driving motor 1, i.e., 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 component and the transmission of presser foot lifter component, then the driving force of driving motor can pass to thread tension releasing lever rod
9, it then controls loose ends routing component and completes loose ends routing, console presser foot component completes presser foot lifter, using a driving motor
It can complete routing Kanematsu line, return knife trimming, presser foot lifter Kanematsu line action.
In conclusion the thread cutting mechanism of use in sewing machine of the invention, the power source using driving motor as thread cutting mechanism,
Form transmission mechanisms using more connection-rod linkages, transmission mechanism is divided into forward and backward two parts, and forward and backward two parts pass through it is slide-shaped
Formula is connected, and driving motor rotation can drive blade to stretch out, and hindfoot portion is connected with resetting-mechanism, and resetting-mechanism drives back segment
Partial reset retracts blade in turn, completes trimming, entire transmission mechanism structure is simple, is easily installed.So the present invention is effective
It overcomes various shortcoming in the prior art and has high industrial utilization value.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should be covered by the claims of the present invention.
Claims (4)
1. a kind of thread cutting mechanism of use in sewing machine characterized by comprising
Driving motor (1) and the main transmission bar (2) being connected with driving motor (1)；
Transmission mechanism, the connecting rod being sequentially connected including more, and it is divided into front section and hindfoot portion, front section and back segment portion
Sliding is divided to be connected, hindfoot portion is connected with resetting-mechanism, first connecting rod (8) in transmission mechanism and main transmission bar (2) phase
Even, last root connecting rod (4) rotational positioning in transmission mechanism is on the casing of sewing machine；The cunning of the front section and hindfoot portion
It is dynamic to be connected specifically: the end of preceding root connecting rod has sliding axle (81) in adjacent two connecting rods, and the end of rear root connecting rod has length
Hole (61), the sliding axle (81) are placed in the strip hole (61) and slide along strip hole (61)；
For completing the cutting assemblies of trimming, including the blade (3) that can be moved forward and backward, blade (3) and described last root connecting rod (4) phase
Even, blade (3) are driven to forward extend out by main transmission bar (2), last root connecting rod (4) when driving motor (1) rotates, driving motor
(1) when resetting, the resetting-mechanism drives hindfoot portion to reset while driving blade (3) to draw back by last root connecting rod (4)
At trimming.
2. the thread cutting mechanism of use in sewing machine according to claim 1, it is characterised in that: fixed on the casing of the sewing machine
It is arranged a guide pad (7), the place of being slidably connected of the front section and the hindfoot portion is located in the guide groove of guide pad (7)
It is interior.
3. the thread cutting mechanism of use in sewing machine according to claim 1, it is characterised in that: the resetting-mechanism includes being threaded through
Reset spring (10) after described on root connecting rod, and the locating part of limit reset spring front end.
4. the thread cutting mechanism of use in sewing machine according to claim 1, it is characterised in that: the driving motor (1) is described
The motor of loose ends routing and presser foot lifter is completed in 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 |
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| Publication Number | Publication Date |
|---|---|
| CN105714485A CN105714485A (en) | 2016-06-29 |
| CN105714485B true CN105714485B (en) | 2019-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610273567.5A Active CN105714485B (en) | 2016-04-28 | 2016-04-28 | The thread cutting mechanism of use in sewing machine |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN113235232B (en) * | 2019-10-12 | 2022-05-20 | 杰克科技股份有限公司 | Thread trimming and presser foot lifting mechanism and overedger |
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|---|---|---|---|---|
| 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 | Two -needle sewing machine's thread trimming mechanism |
| 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 |
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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 | Two -needle sewing machine's thread trimming mechanism |
| 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 |
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| CN105714485A (en) | 2016-06-29 |
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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. |
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