CN203668655U - Thread loosening device of lockstitch sewing machine - Google Patents
Thread loosening device of lockstitch sewing machine Download PDFInfo
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- CN203668655U CN203668655U CN201320893188.8U CN201320893188U CN203668655U CN 203668655 U CN203668655 U CN 203668655U CN 201320893188 U CN201320893188 U CN 201320893188U CN 203668655 U CN203668655 U CN 203668655U
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- thread
- push rod
- loosening device
- thimble
- loose ends
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Abstract
The utility model provides a thread loosening device of a lockstitch sewing machine and belongs to the technical field of sewing machines. The problem that a connector can be easily broken through a steel wire of an existing thread loosening device is solved. According to the thread loosening device of the lockstitch sewing machine, a guiding rod is fixedly connected to a machine shell, an upper clamping plate and a lower clamping plate which can clamp threads are arranged on the guiding rod in a sliding mode, a spring is arranged on the guiding rod in a sleeved mode, and the thread loosening device further comprises a thread loosening pushing rod, a thimble and a thread loosening plate. The thread loosening plate is arranged between the lower clamping plate and the spring. A guiding hole is formed in the length direction in the guiding rod. The thimble is connected into the guiding hole in a sliding mode, the other end of the thimble abuts against the end of the thread loosening pushing rod which is connected with the machine shell in a sliding mode, and machine shell is provided with a driving mechanism which can drive the thread loosening pushing rod to slide in the axial direction to enable the thread loosening plate to compress the spring. Driving force transmission of the thread loosening device of the lockstitch sewing machine is direct and effective, and the whole structure is compact.
Description
Technical field
The utility model belongs to sewing machine technique field, relates to a kind of thread-loosening device of flat seam machine.
Background technology
Sewing machines is to use one or more sewing thread, forms one or more stitchings on sewing, the machine that makes one or more layers sewing interweave or unite by a seam.Sewing function is made the goods such as the fabrics such as cotton, fiber crops, silk, hair, artificial fibre and leather, plastics, paper, the stitching neat appearance of stitching out, smooth firm, and sewing velocity is fast, easy to use.The classification of Sewing machines is according to the purposes of Sewing machines, can be divided into domestic sewing machine, industrial sewing machines and the service trade's Sewing machines between the two, major part in industrial sewing machines all belongs to general Sewing machines, comprise flat seam machine, chain seam machine, quilting machines, overlock machine and flat seaming machine etc., wherein and the utilization rate of flat seam machine is the highest, flat seam machine is also flatcar, generally be commonly referred to as single needle lockstitch m/c, sewing machine for covering chain stitch is mainly with a sewing thread, on sewing, form a kind of stitching, the machine that makes one or more layers sewing interweave or unite by a seam.General automatic shear line sewing machine all has thread-loosening device, all generally by trimming solenoid actuated, again by the connection of loose ends steel wire, drive loose ends top board to swing, loose ends top board drives loose ends push rod to move right, and loose ends push rod promotes thimble, and thimble promotes thread tension releasing disc and outwards moves, make tension disk plate lose spring pressure and unclamp, and play the effect of loose ends.
As Chinese invention patent application (200610117560.0) discloses a kind of Sewing machines pine (enduring) line mechanism, comprise electromagnet and joint thereof, pull bar, line-enduring rod, line-enduring tension bar, thread tension releasing disc and clamp, one end of described pull bar is connected with electromagnet joint, the other end is connected with line-enduring rod, when the plug adhesive of electromagnet or while restoring, band motor magnet joint motion, coupled pull bar is and then motion also, pull bar drives line-enduring rod to rotate around line-enduring rod axis, it rotates and drives loosing line tension bar motion again, the thread tension releasing disc being simultaneously fixed on loosing line tension bar does minor rotation, and then push down tension releasing pin, tension releasing pin is another piece thread tension releasing disc of jack-up again, so just make to produce space between two clamps, thereby reach loose ends or be returned to the object of clamp.Although this thread releasing mechanism is loose ends automatically, this device is because loose ends steel wire is oversize, and middle resistance can be very large, trimming electromagnet could drive by very large power, and steel wire repeatedly draw loose ends top board, easily cause joint breaking, cause machine to use.
Summary of the invention
The purpose of this utility model is to have the problems referred to above for existing technology, has proposed a kind of thread-loosening device of flat seam machine, and more directly effectively, overall structure is compacter in the driving force transmission of the thread-loosening device of this flat seam machine.
The purpose of this utility model can realize by following technical proposal: a kind of thread-loosening device of flat seam machine, described flat seam machine comprises casing, on described casing, be fixed with a guide rod, on described guide rod, slip cap is provided with train wheel bridge and lower plate that can clamp, on guide rod, be also arranged with and act on the spring that on lower plate, lower plate and train wheel bridge is leant, it is characterized in that, described thread-loosening device comprises loose ends push rod, thimble and thread tension releasing disc, described thread tension releasing disc is arranged between lower plate and spring, on described guide rod, offer along its length pilot hole, above-mentioned thimble sliding plug is in pilot hole, and the insertion end of thimble is pressed on thread tension releasing disc, the other end and loose ends push rod end lean, described loose ends push rod is slidably connected on casing, described casing is provided with and can drives loose ends push rod to slide axially to make the driving mechanism of thread tension releasing disc Compress Spring.
Train wheel bridge and lower plate all ringwise, are set on guide rod, and suture passes between two clamping plate, and thread tension releasing disc is pressed on lower plate under the effect of spring, and lower plate is pressed on train wheel bridge, play line ball effect; Guide rod, thimble and loose ends push rod are parallel to each other, under driving mechanism effect, the moving axially of loose ends push rod can promote thimble and move axially, the moving axially of thimble can promote thread tension releasing disc and move, both thread tension releasing disc Compress Springs depart from lower plate, and the chucking power between train wheel bridge and lower plate disappears, suture is released, when the driving force of driving mechanism disappears, under the effect of spring, thread tension releasing disc compresses lower plate again, and lower plate compresses train wheel bridge; Because driving force is passed to loose ends push rod by driving mechanism in this loose ends process, then passing to thimble is thread tension releasing disc, and therefore driving force transmission is more direct, and this is delivered on same action direction, and therefore structure is compacter.
In the thread-loosening device of above-mentioned flat seam machine, described driving mechanism comprises the electromagnet being connected on casing, on described electromagnet, be fixed with a push rod, described push rod parallels with loose ends push rod, end, described loose ends push rod one end is vertically fixed with a baffle plate, and the free end of above-mentioned push rod is pressed on baffle plate plate face.When electromagnet energising, push rod is pushed out, and its end acts on baffle plate, act on loose ends push rod, and transmission of drive force, owing to being provided with baffle plate, therefore push rod and loose ends push rod need to be on same axial lines, and the applicability in casing is better.
In the thread-loosening device of above-mentioned flat seam machine, one end of described push rod is connected on electromagnet by nut, and the other end is fixed with a buffer stopper, and described buffer stopper is pressed on baffle plate.Push rod is connected with electromagnet by nut, easy disassembly and replacing; Buffer stopper can reduce the impulsive force of push rod to baffle plate, lowers the collision noise producing when both contact.
In the thread-loosening device of above-mentioned flat seam machine, on described loose ends push rod other end end face, offer a connecting hole, described thimble end is plugged in connecting hole, and thimble is pressed on connecting hole bottom surface.Be that thimble end is positioned in connecting hole, improve both axialities, make force transmission more effective, structure is also more stable simultaneously.
In the thread-loosening device of above-mentioned flat seam machine, described guide rod one end offers slot to make way along its length, and described thread tension releasing disc ringwise, in the centre bore of thread tension releasing disc, be radially fixed with a blend stop, in the time that thread tension releasing disc is set on guide rod, blend stop is positioned at slot to make way, and described thimble is pressed on blend stop.Be that thread tension releasing disc can be set on guide rod and can move relative to guide rod, realize contacting of thimble and thread tension releasing disc in guide rod by blend stop design simultaneously.
In the thread-loosening device of above-mentioned flat seam machine, a side of described thread tension releasing disc has the annular positioning groove forming by punching press, and described spring one end is pressed in locating slot.Locating slot can play positioning action to spring, avoids spring end displacement.
In the thread-loosening device of above-mentioned flat seam machine, one end that described guide rod is offered slot to make way has also been threaded connection a knob, and the other end of described spring is pressed on knob.The rotation of knob can adjusting knob and lower plate between distance, play the effect of regulating spring pretightning force.
In the thread-loosening device of above-mentioned flat seam machine, described buffer stopper is adopted made of plastic.Plastics are drawn materials conveniently, have the effect of buffering and noise reduction.
Compared with prior art, the thread-loosening device of this flat seam machine has the following advantages:
1, because driving force is passed to loose ends push rod by driving mechanism in this loose ends process, then passing to thimble is thread tension releasing disc, and therefore driving force transmission is more direct, and this is delivered on same action direction, and therefore structure is compacter.
2, because the end of push rod is fixed with buffer stopper, therefore can reduce the impulsive force of push rod to baffle plate, lower the collision noise producing when both contact.
3, one end of offering slot to make way due to guide rod has also been threaded connection a knob, and spring is connected between knob and thread tension releasing disc, therefore can play the effect of regulating spring pretightning force.
Accompanying drawing explanation
Fig. 1 is the sectional perspective structural representation of the thread-loosening device of this flat seam machine.
Fig. 2 is the structure exploded perspective view of the thread-loosening device of this flat seam machine.
In figure, 1, casing; 2, guide rod; 21, pilot hole; 22, slot to make way; 3, thimble; 4, loose ends push rod; 41, baffle plate; 5, driving mechanism; 51, electromagnet; 52, push rod; 53, nut; 54, buffer stopper; 6, train wheel bridge; 7, lower plate; 8, thread tension releasing disc; 81, blend stop; 82, locating slot; 9, spring; 10, knob.
The specific embodiment
Be below specific embodiment of the utility model by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiment.
As shown in Figure 1 and Figure 2, a kind of thread-loosening device of flat seam machine, flat seam machine comprises casing 1, is fixed with a guide rod 2 on casing 1, and on guide rod 2, slip cap is provided with train wheel bridge 6 and lower plate 7, train wheel bridge 6 and lower plate 7 are all ringwise, be set on guide rod 2, suture passes between two clamping plate, is also arranged with spring 9 on guide rod 2, spring 9 acts on and on lower plate 7, makes lower plate 7 and train wheel bridge 6 lean, and lower plate 7 is pressed on and on train wheel bridge 6, plays line ball effect.Thread-loosening device comprises loose ends push rod 4, thimble 3 and thread tension releasing disc 8, thread tension releasing disc 8 is arranged between lower plate 7 and spring 9, on guide rod 2, offer along its length pilot hole 21, thimble 3 sliding plugs are in pilot hole 21, and the insertion end of thimble 3 is pressed on thread tension releasing disc 8, the other end and loose ends push rod 4 ends lean, and loose ends push rod 4 is slidably connected on casing 1, and guide rod 2, thimble 3 and loose ends push rod 4 are parallel to each other.Casing 1 is provided with driving mechanism 5, under driving mechanism 5 effects, the moving axially of loose ends push rod 4 can promote thimble 3 and move axially, the moving axially of thimble 3 can promote thread tension releasing disc 8 and move, both thread tension releasing disc 8 Compress Springs 9 depart from lower plate 7, and the chucking power between train wheel bridge 6 and lower plate 7 disappears not, suture is released, when the driving force of driving mechanism 5 disappears, under the effect of spring 9, thread tension releasing disc 8 compresses lower plate 7 again, and lower plate 7 compresses train wheel bridge 6; Because driving force is passed to loose ends push rod 4 by driving mechanism 5 in this loose ends process, then passing to thimble 3 is thread tension releasing disc 8, and therefore driving force transmission is more direct, and this is delivered on same action direction, and therefore structure is compacter.
Specifically, driving mechanism 5 comprises the electromagnet 51 being connected on casing 1, on electromagnet 51, be fixed with a push rod 52, push rod 52 parallels with loose ends push rod 4, loose ends push rod 4 ends, one end are vertically fixed with a baffle plate 41, the free end of push rod 52 is pressed on baffle plate 41 plate faces, when electromagnet 51 is switched on, push rod 52 is pushed out, its end acts on baffle plate 41, act on loose ends push rod 4, transmission of drive force, owing to being provided with baffle plate 41, therefore push rod 52 need to be on same axial line with loose ends push rod 4, and the applicability in casing 1 is better.One end of push rod 52 is connected on electromagnet 51 by nut 53, easy disassembly and replacing, and the other end is fixed with a buffer stopper 54, and buffer stopper 54 is pressed on baffle plate 41, reduces the impulsive force of push rod 52 to baffle plate 41, lowers the collision noise producing when both contact.On loose ends push rod 4 one end end faces, offer a connecting hole, thimble 3 ends are plugged in connecting hole, and thimble 3 is pressed on connecting hole bottom surface, be that thimble 3 ends are positioned in connecting hole, improve both axialities, make force transmission more effective, structure is also more stable simultaneously.Guide rod 2 one end offer slot to make way 22 along its length, described thread tension releasing disc 8 ringwise, in the centre bore of thread tension releasing disc 8, be radially fixed with a blend stop 81, in the time that thread tension releasing disc 8 is set on guide rod 2, blend stop 81 is positioned at slot to make way 22, thimble 3 is pressed on blend stop 81, and thread tension releasing disc 8 can be set on guide rod 2 and can move relative to guide rod 2, is designed and is realized contacting of the interior thimble 3 of guide rod 2 and thread tension releasing disc 8 simultaneously by blend stop 81.One side of thread tension releasing disc 8 has the annular positioning groove 82 forming by punching press, and spring 9 one end are pressed in locating slot 82, and locating slot 82 can play positioning action to spring 9, avoids spring 9 end displacements.One end that guide rod 2 is offered slot to make way 22 has also been threaded connection a knob 10, and the other end of spring 9 is pressed on knob 10, the rotation of knob 10 can adjusting knob 10 and lower plate 7 between distance, play the effect of regulating spring 9 pretightning forces.Buffer stopper 54 is adopted made of plastic, draws materials conveniently, has the effect of buffering and noise reduction.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various modifications or supplements or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although more used the terms such as casing 1, guide rod 2, pilot hole 21, slot to make way 22, thimble 3, loose ends push rod 4 herein, do not got rid of the possibility that uses other term.Use these terms to be only used to describe more easily and explain essence of the present utility model; They are construed to any additional restriction is all contrary with the utility model spirit.
Claims (8)
1. the thread-loosening device of a flat seam machine, described flat seam machine comprises casing (1), on described casing (1), be fixed with a guide rod (2), the upper slip cap of described guide rod (2) is provided with train wheel bridge (6) and lower plate (7) that can clamp, on guide rod (2), be also arranged with and act on the spring (9) that on lower plate (7), lower plate (7) and train wheel bridge (6) is leant, it is characterized in that, described thread-loosening device comprises loose ends push rod (4), thimble (3) and thread tension releasing disc (8), described thread tension releasing disc (8) is arranged between lower plate (7) and spring (9), on described guide rod (2), offer along its length pilot hole (21), above-mentioned thimble (3) sliding plug is in pilot hole (21), and the insertion end of thimble (3) is pressed on thread tension releasing disc (8), the other end and loose ends push rod (4) end lean, described loose ends push rod (4) is slidably connected on casing (1), described casing (1) is provided with the driving mechanism (5) that can drive loose ends push rod (4) to slide axially to make thread tension releasing disc (8) Compress Spring (9).
2. the thread-loosening device of flat seam machine according to claim 1, it is characterized in that, described driving mechanism (5) comprises the electromagnet (51) being connected on casing (1), on described electromagnet (51), be fixed with a push rod (52), described push rod (52) parallels with loose ends push rod (4), described loose ends push rod (4) end, one end is vertically fixed with a baffle plate (41), and the free end of above-mentioned push rod (52) is pressed on baffle plate (41) plate face.
3. the thread-loosening device of flat seam machine according to claim 2, it is characterized in that, it is upper that one end of described push rod (52) is connected in electromagnet (51) by nut (53), and the other end is fixed with a buffer stopper (54), and described buffer stopper (54) is pressed on baffle plate (41).
4. the thread-loosening device of flat seam machine according to claim 2, is characterized in that, on described loose ends push rod (4) other end end face, offers a connecting hole, and described thimble (3) end is plugged in connecting hole, and thimble (3) is pressed on connecting hole bottom surface.
5. according to the thread-loosening device of the flat seam machine described in claim 3 or 4, it is characterized in that, described guide rod (2) one end offers slot to make way (22) along its length, described thread tension releasing disc (8) ringwise, in the centre bore of thread tension releasing disc (8), be radially fixed with a blend stop (81), in the time that thread tension releasing disc (8) is set on guide rod (2), blend stop (81) is positioned at slot to make way (22), and described thimble (3) is pressed on blend stop (81).
6. the thread-loosening device of flat seam machine according to claim 5, is characterized in that, a side of described thread tension releasing disc (8) has the annular positioning groove (82) forming by punching press, and described spring (9) one end is pressed in locating slot (82).
7. the thread-loosening device of flat seam machine according to claim 6, is characterized in that, one end that described guide rod (2) is offered slot to make way (22) has also been threaded connection a knob (10), and the other end of described spring (9) is pressed on knob (10).
8. the thread-loosening device of flat seam machine according to claim 3, is characterized in that, described buffer stopper (54) is adopted made of plastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320893188.8U CN203668655U (en) | 2013-12-31 | 2013-12-31 | Thread loosening device of lockstitch sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320893188.8U CN203668655U (en) | 2013-12-31 | 2013-12-31 | Thread loosening device of lockstitch sewing machine |
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| Publication Number | Publication Date |
|---|---|
| CN203668655U true CN203668655U (en) | 2014-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320893188.8U Expired - Fee Related CN203668655U (en) | 2013-12-31 | 2013-12-31 | Thread loosening device of lockstitch sewing machine |
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|---|---|
| CN (1) | CN203668655U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107419449A (en) * | 2017-09-19 | 2017-12-01 | 浙江飞凤缝制设备有限公司 | A kind of computer direct-drive formula integrative feeding sewing machine |
| CN108374245A (en) * | 2015-06-19 | 2018-08-07 | 杰克缝纫机股份有限公司 | The wire-clamping device and its operational method of sewing machine |
-
2013
- 2013-12-31 CN CN201320893188.8U patent/CN203668655U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108374245A (en) * | 2015-06-19 | 2018-08-07 | 杰克缝纫机股份有限公司 | The wire-clamping device and its operational method of sewing machine |
| CN108374245B (en) * | 2015-06-19 | 2020-10-09 | 杰克缝纫机股份有限公司 | Operation method of thread clamping device of sewing machine |
| CN107419449A (en) * | 2017-09-19 | 2017-12-01 | 浙江飞凤缝制设备有限公司 | A kind of computer direct-drive formula integrative feeding sewing machine |
| CN107419449B (en) * | 2017-09-19 | 2023-02-17 | 浙江飞凤缝制设备有限公司 | Computer direct-drive type comprehensive feeding sewing machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20151210 Address after: Taizhou City, Zhejiang province 318000 Jiaojiang Xiachen street, Airport Road No. 1 Patentee after: ZHEJIANG GEMSY MECHANICAL & ELECTRICAL CO., LTD Address before: 318000, No. 638, East Ring Road, Taizhou Economic Development Zone, Jiaojiang District, Zhejiang, Taizhou Patentee before: Zhejiang Gemsy Mechanical and Electrical Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140625 Termination date: 20191231 |
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| CF01 | Termination of patent right due to non-payment of annual fee |