CN107119394A - The thread cutting mechanism of double-crank driving - Google Patents
The thread cutting mechanism of double-crank driving Download PDFInfo
- Publication number
- CN107119394A CN107119394A CN201710484217.8A CN201710484217A CN107119394A CN 107119394 A CN107119394 A CN 107119394A CN 201710484217 A CN201710484217 A CN 201710484217A CN 107119394 A CN107119394 A CN 107119394A
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- CN
- China
- Prior art keywords
- crank
- knife
- trimming
- component
- operator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000009966 trimming Methods 0.000 claims abstract description 56
- 239000010705 motor oil Substances 0.000 claims abstract description 12
- 210000005069 ears Anatomy 0.000 claims description 5
- 230000001788 irregular Effects 0.000 claims description 3
- 230000000712 assembly Effects 0.000 claims 1
- 238000000429 assembly Methods 0.000 claims 1
- 238000009958 sewing Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 5
- 244000000626 Daucus carota Species 0.000 description 2
- 235000005770 birds nest Nutrition 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 235000005765 wild carrot Nutrition 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B65/00—Devices for severing the needle or lower thread
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The present invention relates to stitching process field, and in particular to a kind of thread cutting mechanism of double-crank driving.Technical scheme includes rotary shuttle shaft, trimming cam, trimming cam crank component, trimming crank axle, active knife assembly, secondary moving knife component and engine oil pump shaft sleeve, described rotary shuttle shaft is fixedly arranged on trimming cam, one end of rotary shuttle shaft is sheathed in engine oil pump shaft sleeve, the secondary knife rest of the main carriage of active knife assembly and time moving knife component is sheathed on the excircle of the miner diameter end of engine oil pump shaft sleeve successively, the secondary knife crank of the operator crank of the active knife assembly and time moving knife component is arranged on the excircle of the miner diameter end of trimming crank axle successively, the breach of the trimming crank axle other end is connected with trimming cam crank component, operator component is with time knife assembly simultaneously by trimming crankshaft drives, realize that trimming is acted.The present invention is in sewing, and structural behaviour is stable, and double-pole institutional adjustment is separate, does not interfere with each other, convenient adjustment and maintenance.
Description
Technical field
The present invention relates to stitching process field, and in particular to a kind of thread cutting mechanism of double-crank driving.
Background technology
The thread cutting mechanism of current conventional sewing machine is the mechanism that moving knife coordinates trimming with stationary knife, and its drawback is that trimming point is located at
Pin hole position to the right, is engaged at stationary knife cutting edge, and the remaining the end of a thread of sewing is longer after trimming, and it is attractive in appearance, it is necessary to manual that influence is sewed
In the process for doing once rejecting the end of a thread；It is time-consuming, take a lot of work.
The content of the invention
The present invention is in order to solve the above technical problems, provide a kind of thread cutting mechanism of double-crank driving.
To solve the problem of prior art is present, the technical scheme is that：A kind of thread cutting mechanism of double-crank driving,
It is characterized in that：Including rotary shuttle shaft, trimming cam, trimming cam crank component, trimming crank axle, active knife assembly, secondary moving knife
Component and engine oil pump shaft sleeve, described rotary shuttle shaft are fixedly arranged on trimming cam, and one end of rotary shuttle shaft is sheathed in engine oil pump shaft sleeve, driving knife
The secondary knife rest of the main carriage of component and time moving knife component is sheathed on the excircle of the miner diameter end of engine oil pump shaft sleeve successively, the active
The secondary knife crank of the operator crank of knife assembly and time moving knife component is arranged on the excircle of the miner diameter end of trimming crank axle successively,
The breach of the trimming crank axle other end is connected with trimming cam crank component, and operator component is with time knife assembly simultaneously by trimming crank
Axle drives, and realizes that trimming is acted.
The structure of described active knife assembly includes operator crank, operator connecting rod, main carriage and driving knife, described operator
The bottom of crank is " C " type structure, and the openend of " C " type structure is provided with two parallel ears, two parallel ears
Piece it is connected by screw, centre is irregular body, top is provided with nut, and the structure of described main carriage includes an annulus and one
It is provided with " L " type of connection sheet composition, described annulus on dome, dome and is provided with screw hole, is set in described connection sheet
It is equipped with two connecting holes, the screw hole on the dome of described main carriage is connected with operator connecting rod and nut by axial screw,
Operator connecting rod and operator crank are connected together by axial screw and nut, and main carriage is connected by blade screw and driving knife
Connect.
Described secondary cutter holder assembly includes time knife crank, secondary knife connecting rod, secondary knife rest and secondary moving knife, and described secondary knife crank is
Through hole is provided with while being provided with the rectangular block of fluting, rectangular block on screw hole, the both sides rectangular block of groove, described secondary knife connects
Bar is stepped ramp type, and social son has connecting hole respectively at two ends, and described secondary knife rest includes " L " that an annulus and a connecting piece are constituted
It is provided with type, described annulus on dome, dome and is provided with screw hole, two connecting holes is provided with described connection sheet,
Secondary moving knife is connected by positioning screw and blade screw with two connecting holes in the connection sheet of time knife rest, and secondary knife connecting rod one end leads to
Cross axial screw to be connected with the dome screw hole on time knife rest annulus, the other end is connected by pin with bayonet crank.
Compared with prior art, advantages of the present invention is as follows：
1st, the present invention expands tangent point controlled range, the right position that tangent point is can be controlled in immediately below eedle, double-pole crank
Structure is each unfettered, the remaining stub of sewing after tangent point, control trimming can be adjusted flexibly, it is ensured that eedle line after trimming
Head length is shorter, controls Bird's Nest size.
2nd, the present invention is in sewing, and structural behaviour is stable, and double-pole institutional adjustment is separate, does not interfere with each other, convenient adjustment
With maintenance.
3rd, structure of the present invention can control the meshing point of trimming immediately below pin hole, sewing remnants the end of a thread after trimming is shortened about
3mm, saves the process for rejecting the end of a thread, time saving, saving of labor.
Brief description of the drawings
Fig. 1 is assembling schematic diagram of the invention；
Fig. 2 is structural representation of the invention；
Fig. 3 is present invention assembling splitted construction schematic diagram；
Fig. 4 is main carriage modular construction schematic diagram of the present invention；
Fig. 5 is the present invention time cutter holder assembly structural representation；
Fig. 6 is conventional types thread cutting mechanism schematic diagram；
Fig. 7 is double-crank thread cutting mechanism schematic diagram.
In figure：Description of reference numerals：1-rotary shuttle shaft, 2-trimming cam, 3-trimming cam crank component, 4-trimming is bent
Arbor, 5-active knife assembly, 5-1-screw, 5-2 operator cranks, 5-3 operator connecting rods, 5-4 axial screws, 5-5 main carriages, 5-
6 driving knifes, 5-7 blade screws, 5-8 axial screws, 5-9 nuts, 6-secondary knife assembly, 6-1 screws, 6-2 knife crank, 6-3 pins
Son, 6-4 knife connecting rod, 6-5 axial screws, 6-6 knife rest, 6-7 moving knife, 6-8 blade screws, 6-9 positioning screws, 7- oil pumps
Axle sleeve.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
Referring to Fig. 1-Fig. 3：A kind of thread cutting mechanism of double-crank driving of the present embodiment offer, including rotary shuttle shaft 1, trimming are convex
Wheel 2, trimming cam crank component 3, trimming crank axle 4, active knife assembly 5, secondary moving knife component 6 and engine oil pump shaft sleeve 7.
Referring to Fig. 4：The structure of described active knife assembly 5 includes operator crank 5-2, operator connecting rod 5-3, main carriage 5-5
With driving knife 5-6, described operator crank 5-2 bottom is " C " type structure, and the openend of " C " type structure is provided with two phases
Parallel ear, two parallel ears are connected by screw 5-1, and centre is irregular body, and top is provided with nut 5-9,
Described main carriage 5-5 structure includes being provided with dome on " L " type that an annulus and a connecting piece are constituted, described annulus,
It is provided with dome in screw hole, described connection sheet and is provided with two connecting holes, the spiral shell on described main carriage 5-5 dome
Nail is connected with operator connecting rod 5-3 and nut 5-9 by axial screw 5-4, and operator connecting rod 5-3 and operator crank 5-2 pass through axle
Position screw 5-8 and nut 5-9 is connected together, and main carriage 5-5 is connected by blade screw 5-7 with driving knife 5-6.
Referring to Fig. 5：Described secondary cutter holder assembly 6 includes time knife crank 6-2, secondary knife connecting rod 6-4, secondary knife rest 6-6 and secondary dynamic
Knife 6-7, described secondary knife crank 6-2 are to be provided with screw hole, the both sides rectangular block of groove on the rectangular block that one side is slotted, rectangular block
On be provided with through hole, described secondary knife connecting rod 6-4 is stepped ramp type, and social son has connecting hole, described secondary knife rest 6-6 respectively at two ends
It is provided with " L " type constituted including an annulus and a connecting piece, described annulus on dome, dome and is provided with screw hole, institute
Two connecting holes are provided with the connection sheet stated, secondary moving knife 6-7 passes through positioning screw and blade screw and time knife rest 6-6 connection
Two connecting holes connection on piece, secondary knife connecting rod 6-4 one end passes through axial screw 6-5 and the dome spiral shell on time knife rest 6-6 annulus
Nail is connected, and the other end is connected by pin 6-3 with bayonet crank 6-2.
Referring to Fig. 6：For conventional types cutter mechanism, tangent point 9 is located at the position to the right of pin hole center 8.
Referring to Fig. 7：The present invention expands tangent point controlled range, and tangent point 9 can be controlled in the position of the left and right immediately below eedle
Put, double-pole crank structure is each unfettered, the remaining stub of sewing after tangent point, control trimming can be adjusted flexibly, it is ensured that
Eedle stub is shorter after trimming, controls Bird's Nest size.
Rotary shuttle shaft 1 of the present invention is fixedly arranged on trimming cam 2, and one end of rotary shuttle shaft is sheathed in engine oil pump shaft sleeve 7, active knife assembly
5 main carriage 5-5 annulus and time No. 6 knife rest 6-6 of moving knife component annulus are sheathed on the cylindrical of the miner diameter end of engine oil pump shaft sleeve 7 successively
Zhou Shang, operator component 5 is driven by trimming crank axle 4 simultaneously with time knife assembly 6, the operator crank 5-2 of the active knife assembly 5 and
The secondary knife crank 6-2 of secondary moving knife component 6 is arranged on the excircle of the miner diameter end of trimming crank axle 4 successively, and trimming crank axle 4 is another
The breach of one end is connected with trimming cam crank component 3, and operator component 5 is driven by trimming crank axle 4 simultaneously with time knife assembly 6,
Realize that trimming is acted.
The course of work of the present invention：Rotary shuttle shaft 1 is rotated, and drives trimming cam 2, driving trimming cam crank component 3 is with cutting
The curved surface of line cam 2 coordinates, and trimming cam crank component 3 is turned an angle, trimming cam crank component 3 and trimming crank
Axle 4 coordinates, and also turns an angle simultaneously, and by unclamping screw 5-1, adjustment trimming crank axle 4 just makes position, can adjust operator
Crank 5-2 rotational angle, so that driving knife 5-6 final position is just have adjusted, because of operator crank 5-2 and time knife crank 6-2
It is also secured on trimming crank axle 4, so operator crank 5-2 is identical with time knife crank 6-2 rotational angle, adjustment time knife is bent
Handle 6-2 initial position, just can control time moving knife 6-6 final position.
The final position mutual with secondary moving knife 6-7 by adjusting driving knife 5-6, can customize mounted in tangential engagement point.
The foregoing is only a preferred embodiment of the present invention, is not intended to limit the scope of the present invention.
Claims (3)
1. a kind of thread cutting mechanism of double-crank driving, it is characterised in that：Including rotary shuttle shaft（1）, trimming cam（2）, trimming cam
Crank assemblies（3）, trimming crank axle（4）, active knife assembly（5）, secondary moving knife component（6）And engine oil pump shaft sleeve（7）, described rotating shuttle
Axle（1）It is fixedly arranged on trimming cam（2）, one end of rotary shuttle shaft is sheathed on engine oil pump shaft sleeve（7）It is interior, active knife assembly（5）Main carriage
（5-5）With secondary moving knife component（6）Secondary knife rest（6-6）Engine oil pump shaft sleeve is sheathed on successively（7）Miner diameter end excircle on, it is described
Active knife assembly（5）Operator crank（5-2）With secondary moving knife component（6）Secondary knife crank（6-2）Trimming crank is arranged in successively
Axle（4）Miner diameter end excircle on, trimming crank axle（4）The breach of the other end and trimming cam crank component（3）Connection, it is main
Knife assembly（5）With secondary knife assembly（6）Simultaneously by trimming crank axle（4）Driving, realizes that trimming is acted.
2. the thread cutting mechanism of double-crank driving according to claim 1, it is characterised in that：Described active knife assembly（5）
Structure include operator crank（5-2）, operator connecting rod（5-3）, main carriage（5-5）And driving knife（5-6）, described operator crank
（5-2）Bottom be " C " type structure, the openend of " C " type structure is provided with two parallel ears, two parallel ears
Piece pass through screw（5-1）Connection, centre is irregular body, and top is provided with nut（5-9）, described main carriage（5-5）Knot
Structure, which includes being provided with dome, dome on " L " type that an annulus and a connecting piece are constituted, described annulus, is provided with screw hole,
Two connecting holes, described main carriage are provided with described connection sheet（5-5）Dome on screw hole with operator connecting rod（5-
3）And nut（5-9）Pass through axial screw（5-4）Connection, connecting rod of operating（5-3）With operator crank（5-2）Pass through axial screw
（5-8）And nut（5-9）It is connected together, main carriage（5-5）Pass through blade screw（5-7）With driving knife（5-6）Connection.
3. the thread cutting mechanism of double-crank driving according to claim 1 or 2, it is characterised in that：Described secondary cutter holder assembly
（6）Including secondary knife crank（6-2）, secondary knife connecting rod（6-4）, secondary knife rest（6-6）With secondary moving knife（6-7）, described secondary knife crank（6-
2）It is provided with the rectangular block slotted for one side, rectangular block on screw hole, the both sides rectangular block of groove and is provided with through hole, described time
Knife connecting rod（6-4）For stepped ramp type, social son has connecting hole, described secondary knife rest respectively at two ends（6-6）Connect including an annulus and one
It is provided with " L " type of contact pin composition, described annulus on dome, dome and is provided with screw hole, is set in described connection sheet
There are two connecting holes, secondary moving knife（6-7）Pass through positioning screw and blade screw and time knife rest（6-6）Connection sheet on two companies
Connect hole connection, secondary knife connecting rod（6-4）One end passes through axial screw（6-5）With secondary knife rest（6-6）Dome screw hole on annulus connects
Connect, the other end passes through pin（6-3）With bayonet crank（6-2）Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710484217.8A CN107119394A (en) | 2017-06-23 | 2017-06-23 | The thread cutting mechanism of double-crank driving |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710484217.8A CN107119394A (en) | 2017-06-23 | 2017-06-23 | The thread cutting mechanism of double-crank driving |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107119394A true CN107119394A (en) | 2017-09-01 |
Family
ID=59719428
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710484217.8A Pending CN107119394A (en) | 2017-06-23 | 2017-06-23 | The thread cutting mechanism of double-crank driving |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107119394A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2194897A (en) * | 1936-04-29 | 1940-03-26 | United Shoe Machinery Corp | Shoe sewing machine |
| JPH06218170A (en) * | 1993-01-28 | 1994-08-09 | Aisin Seiki Co Ltd | Thread cutting device for sewing machine |
| CN103074744A (en) * | 2013-01-16 | 2013-05-01 | 新杰克缝纫机股份有限公司 | Rotary shuttle oil-supplying device |
| CN103225183A (en) * | 2012-01-25 | 2013-07-31 | 兄弟工业株式会社 | A sewing machine |
| CN105970507A (en) * | 2016-06-24 | 2016-09-28 | 杰克缝纫机股份有限公司 | Thread trimming mechanism of sewing machine |
| CN106757848A (en) * | 2016-12-22 | 2017-05-31 | 西安标准工业股份有限公司 | Industrial sewing machine thread cutting mechanism |
| CN206204583U (en) * | 2016-10-21 | 2017-05-31 | 西安标准工业股份有限公司 | A kind of industrial sewing machine tangent mechanism |
| CN207391736U (en) * | 2017-06-23 | 2018-05-22 | 西安标准工业股份有限公司 | A kind of thread cutting mechanism of double-crank driving |
-
2017
- 2017-06-23 CN CN201710484217.8A patent/CN107119394A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2194897A (en) * | 1936-04-29 | 1940-03-26 | United Shoe Machinery Corp | Shoe sewing machine |
| JPH06218170A (en) * | 1993-01-28 | 1994-08-09 | Aisin Seiki Co Ltd | Thread cutting device for sewing machine |
| CN103225183A (en) * | 2012-01-25 | 2013-07-31 | 兄弟工业株式会社 | A sewing machine |
| CN103074744A (en) * | 2013-01-16 | 2013-05-01 | 新杰克缝纫机股份有限公司 | Rotary shuttle oil-supplying device |
| CN105970507A (en) * | 2016-06-24 | 2016-09-28 | 杰克缝纫机股份有限公司 | Thread trimming mechanism of sewing machine |
| CN206204583U (en) * | 2016-10-21 | 2017-05-31 | 西安标准工业股份有限公司 | A kind of industrial sewing machine tangent mechanism |
| CN106757848A (en) * | 2016-12-22 | 2017-05-31 | 西安标准工业股份有限公司 | Industrial sewing machine thread cutting mechanism |
| CN207391736U (en) * | 2017-06-23 | 2018-05-22 | 西安标准工业股份有限公司 | A kind of thread cutting mechanism of double-crank driving |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170901 |