CN101314899B - Electric sewing machine - Google Patents
Electric sewing machine Download PDFInfo
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- CN101314899B CN101314899B CN2008100626787A CN200810062678A CN101314899B CN 101314899 B CN101314899 B CN 101314899B CN 2008100626787 A CN2008100626787 A CN 2008100626787A CN 200810062678 A CN200810062678 A CN 200810062678A CN 101314899 B CN101314899 B CN 101314899B
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- level sensor
- connecting rod
- line level
- presser feet
- electromagnetism
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Abstract
The invention discloses an electric sewing machine which comprises a machine head, a bedplate, a stent, an electromotor and a pedal, wherein, the machine head is provided with a presser foot and a machine needle which are arranged in the position opposite to the bedplate; the presser foot is provided with a U-shaped opening; and the electromotor is provided with a clutch which is linked with the pedal through a link lever; and the electric sewing machine also comprises a bobbin thread monitoring apparatus. When the electric sewing machine works at a high speed, and conditions that bobbin threads use up or break, the stitch slips, the bobbin threads loose, etc. happen, a thread position sensor can be triggered by sewing threads on the machine needle, and a signal can be given out to impel the bobbin thread monitoring apparatus to act and enable the electric sewing machine to stop. The bobbin thread monitoring apparatus has the advantages of simple structure and low manufacturing cost, and no need of a complicated electronic control system for realizing the bobbin thread monitoring; and the machine can be stopped when no bobbin thread exits and the bobbin threads breaks, or the stitch slips or the bobbin threads loose, thereby realizing the effect that the sewing material is effectively utilized, saving resources, reducing the product rework rate, and improving the production efficiency.
Description
Technical field
The present invention relates to a kind of electric sewer.
Background technology
Electric sewer is kind of the sewing tool with automatic job function, only needs to place cloth to be processed in the platen tram, and the motor start-up of this Sewing machines behind the energized switch, the Sewing machines that pushes down on the pedal get into along the seam state automatically cloth is sewed up; Clutch separation after releasing the pedal in the motor, Sewing machines quits work.Sewing machines is difficult to when being in the high speed operation state to detect by an unaided eye that Sewing machines inner situation, especially bottom line use up, bouncing pilotage, bottom line are crossed situation such as pine.Can't in time discover to obtain in case these situation take place by the workman, the cloth after making exists sews up quality problems not tight, that sewing thread is loosening at all.For whether the sewing thread that can monitor on the bottom line bobbin in the rotating shuttle that is embedded in rotation at a high speed uses up; The replacing period of instant report bottom line bobbin; The Sewing machines that October 10, disclosed Chinese patent publication number was CN101050588A in 2007; Have through operation and send the pedal of the initiating signal that is used to drive Sewing machines and the stop signal that is used to stop the Sewing machines running and when ormal weight is following, send the checkout gear of detection signal when the line surplus of bottom line bobbin; It also has when being detected said line amount by said checkout gear when ormal weight is following; Report the 1st device that Sewing machines shuts down; With when detecting said line amount by said checkout gear when ormal weight is following; The 2nd device that does not stop Sewing machines running but report through sound and selection make said the 1st device effectively or make said the 2nd device effective choice device and carry out the control of said the 1st device and carry out the control device of the 2nd device according to the selection of selecting arrangement.Though this Sewing machines can realize reporting the situation of bottom line bobbin, there is the monitoring device complex structure, the shortcoming that manufacturing cost is high.Because general Sewing machines does not have little processing capacity; Structurally do not possess little process chip and corresponding input-output equipment; The function that therefore will realize above-mentioned Sewing machines just must be equipped with comparatively expensive electronic control system, comprises parts such as pedal position detector, CPU, control panel, motor encoder, eedle position detector, selector switch at least.
Summary of the invention
The technical problem that the present invention will solve provides a kind of electric sewer; It has bottom line monitoring device simple in structure, that production cost is low, can make electric sewer bottom line occur and use up when crossing pine with bottom line fracture or bouncing pilotage or bottom line and in time stop the electric sewer running and send alarm signal.
Another technical problem that the present invention will solve provides a kind of electric sewer, can after each energized start, guarantee the empty load of motor starting.
For solving the problems of the technologies described above, the present invention adopts following technical scheme: electric sewer comprises head, platen, support, motor, pedal, and said platen is arranged on support top; Said head is arranged on the platen, and head is provided with presser feet and eedle in the position relative with platen, and said presser feet is provided with the U-shaped opening; Said motor is provided with clutch, and said clutch is through connecting rod and pedal interlock, and said electric sewer also comprises the bottom line supervising device; This bottom line supervising device comprises line level sensor, relay, capacitor, alarm and electromagnetism expansion bend, and said line level sensor is connected with relay, and said relay is connected with the electromagnetism expansion bend; Said capacitor is parallelly connected with the line level sensor; Said electromagnetism expansion bend is parallelly connected with alarm, and said line level sensor is connected on the presser feet, and said line level sensor is arranged on the U-shaped opening top of presser feet; One end of said electromagnetism expansion bend is connected with pedal, and the other end is connected with connecting rod.。
As of the present invention preferred, said line level sensor and presser feet flexibly connect.Be convenient to line level sensor adjustment sensitivity.
As of the present invention preferred, said line level sensor is provided with dovetail groove, and said presser feet is provided with the slideway of corresponding dovetail groove.Adopt this structure can realize sliding neatly, can on basis simple in structure, simplify production technology again, reduce production costs.
As of the present invention preferred, said slideway is horizontal.Remain the vertical positional relationship with eedle, make the distance between line level sensor and the eedle the shortest.
As of the present invention preferred, said bottom line supervising device comprises at least two line level sensors, parallel connection between the said line level sensor.The Sewing machines that has has the structure of two-shipper pin, think and can on the Sewing machines of this spline structure, use this bottom line supervising device just to increase the line level sensor of respective numbers.For guaranteeing that two pairing bottom lines of eedle can both be monitored, and with the reason of any undesired situation of bottom line as this bottom line supervising device normal response, parallel connection between the wired level sensor of institute.
As of the present invention preferred, said line level sensor and presser feet flexibly connect.Be convenient to line level sensor adjustment sensitivity.
As of the present invention preferred, said line level sensor is provided with dovetail groove, and said presser feet is provided with the slideway of corresponding dovetail groove.Adopt this structure can realize sliding neatly, can on basis simple in structure, simplify production technology again, reduce production costs.
As of the present invention preferred, said slideway is horizontal.Remain the vertical positional relationship with eedle, make the distance between line level sensor and the eedle the shortest.
As of the present invention preferred, said line level sensor comprises two rubber-like wires, the horizontal U-shaped opening top that is distributed in of said wire.Through adopting the switching regulator sensor to reduce production costs; Compare with photoelectricity, ultrasonic wave, acoustic-electric formula sensor and to adopt the switching regulator sensor to be interfered not too easily, working stability, and also monitoring is convenient during maintenance.
As of the present invention further preferred, wherein the diameter of an one metal wire is greater than the diameter of another one metal wire.Two one metal wire diameters are inequality, and the diameter of two one metal wires varies, so the contact probability of two one metal wires in motion process just improves greatly.
The present invention adopts technique scheme: bottom line takes place when the electric sewer high speed operation use up with bottom line fracture or bouncing pilotage or bottom line and cross situation such as pine; The line level sensor just can be touched by the sewing thread on the eedle, and sends signal and impel the action of bottom line supervising device that electric sewer is quit work and send warning message.This bottom line supervising device has advantage simple in structure, that production cost is low; Need not realize the bottom line monitoring through complicated electronic control system; Reach fracture of no bottom line or bottom line or bouncing pilotage or bottom line and cross the purpose of pine ability autostop, realize effectively utilizing the effect of making material, economize on resources; Simultaneously can also reduce the product rework rate, enhance productivity.Simultaneously; This electric sewer possesses also that motor can both be in starting under no load and get into the no-load running state behind any once electrification; The back motor under the situation of restoring electricity of avoiding having a power failure causes the situation that motor burns because of directly driving head load starting difficulty, thereby plays the purpose of protection motor.
Description of drawings
Below in conjunction with accompanying drawing and practical implementation the present invention is done further and to specify.
Fig. 1 is the structural representation of electric sewer of the present invention;
Fig. 2 is the structural representation of the presser feet of electric sewer of the present invention;
The view at Fig. 3 presser feet and eedle place during for electric sewer normal operating conditions of the present invention;
The view at Fig. 4 presser feet and eedle place during for electric sewer abnormal operating state of the present invention;
Fig. 5 is the circuit diagram of electric sewer of the present invention;
Fig. 6 is the structural representation of the electromagnetism expansion bend of electric sewer of the present invention.
The specific embodiment
Like Fig. 1, shown in 2, electric sewer has comprised head 1, platen 2, support 3, motor 4, pedal 5 and bottom line supervising device.Platen 2 is installed on the support 3, on the top of platen 2 head 1 has been installed, head 1 is being provided with one group of presser feet 6 and eedle 7 of accomplishing stitching work with platen 2 relative positions.Presser feet 6 can vertically move up and down, be pressed on below it the cloth 14 that will sew up, presser feet 6 is provided with a U-shaped opening.Eedle 7 bottoms have sewing thread, its up and down during vertical motion just from the U-shaped opening part turnover of presser feet 6, and sewing thread sewed up in the cloth 14.Motor 4 is arranged on platen 2 bottoms, which is provided with clutch.Pedal 5 is movably connected in motor 4 bottoms.The bottom line supervising device comprises a line level sensor 8, relay 9, capacitor 15, alarm 16 and electromagnetism expansion bend 10.Side at presser feet 6 is provided with horizontal slideway 11, and line level sensor 8 is installed on this slideway 11.The cross section of this slideway 11 is trapezoidal, and online level sensor 8 is provided with a dovetail groove, thereby line level sensor 8 is movably connected on the presser feet 6 through dovetail groove, and can move horizontally.Line level sensor 8 is provided with two to be separated and rubber-like wire 12; The diameter of two one metal wires 12 is inequality; Wherein the diameter of one metal wire 12 is greater than the diameter of another one metal wire 12; Two one metal wires, the 12 horizontal U-shaped opening tops that are distributed in, the bearing of trend of wire 12 intersects with the opening direction of U-shaped opening; Inboard wire 12 diameters of U-shaped opening are bigger than another root diameter being positioned at, and the contact probability of such two one metal wires 12 on horizontal plane is just very high.The movable end of pedal 5 is connected with electromagnetism expansion bend 10 1 ends, and electromagnetism expansion bend 10 other ends connect connecting rod 13, the clutch linkage of connecting rod 13 and motor 4.Electromagnetism expansion bend 10 is telescoping mechanisms, and as shown in Figure 6, this electromagnetism expansion bend that is used for electric sewer comprises electromagnetism main part 20, fore shaft connecting rod 21, lock tube 22, locking plate 23, linkage and extension connecting rod 24.Electromagnetism main part 20 is provided with expansion link 33, and expansion link 33 can or inwardly shrink from the 20 inner outwards elongations of electromagnetism main part, so it has Telescopic.The two ends up and down of electromagnetism main part 20 bodies are being fixed fore shaft connecting rod 21 respectively and are being extended connecting rod 24, and the bearing of trend of fore shaft connecting rod 21 is opposite with the bearing of trend that extends connecting rod 24.The top of fore shaft connecting rod 21 is provided with fluking type fore shaft 25, and fore shaft connecting rod 21 tops are hemispherical, and the cross section of fluking type fore shaft 25 is curved.Lock tube 22 inside be provided with one with the identical endoporus of fore shaft connecting rod 21 diameters, fore shaft connecting rod 21 inserts in lock tube 22 through this endoporus; Lock tube 22 is provided with opening 26, and the cross section of opening 26 is triangular in shape.Linkage comprises T shape connecting rod 27, unlock lever I28 and unlock lever II29, and the bottom of T shape connecting rod 27 is provided with two parallel branches, and they link together through connecting axle 30 and expansion link 33; One end at T shape connecting rod 27 tops is provided with through hole II31, and the size of through hole II31 is big or small identical with fore shaft connecting rod 21, and T shape connecting rod 27 tops are movably arranged on the fore shaft connecting rod 21 through through hole II31.Unlock lever I28 one end is provided with through hole I32, and the size of through hole I32 is big or small identical with lock tube 22, and unlock lever I28 is movably connected in lock tube 22 bottoms through through hole I32; Unlock lever I28 other end unlock lever II29 flexibly connects.Unlock lever II29 is Z-shaped, and an end and unlock lever I28 flexibly connect, and the other end is movably connected on the lock tube 22 through bearing pin.The tie point of unlock lever II29 and lock tube 22 is positioned at the top of opening 26.Stubborn bending song in the middle of the locking plate 23, integral body is in the shape of the letter V, and locking plate 23 is fixed on the unlock lever II29, and just is positioned at opening 26 places.
Selector switch I18 as shown in Figure 5, as to use when the incoming end of civil power is connected with a buck rectifier 17 and a maintenance, series connection is between the two gone in the civil power loop; Be connected with capacitor 15 and line level sensor 8 at the output of buck rectifier 17, capacitor 15 and 8 parallel connections of line level sensor are gone back the signal input part of SRE 9 on this loop; Relay 9 is connected on the civil power loop, and in connecting with electromagnetism expansion bend 10; Alarm 16 is in series with selector switch II19, and alarm 16 is connected in parallel on the electromagnetism main part 20 with selector switch II19; Motor 4 is connected on the incoming end of civil power.
As shown in Figure 3, the sewing thread during the electric sewer operate as normal on the eedle 7 is pulled into vertical state by eedle 7 and cloth 14 at every turn, and away from the wire 12 of line level sensor 8; Electromagnetism main part 20 is in elongation state.And use up or bouncing pilotage or bottom line when crossing pine when the bottom line of the Sewing machines that runs up; As shown in Figure 4; Sewing thread on the eedle 7 is pulled into heeling condition by eedle 7 and cloth 14, and at the wire 12 of inclination pusher moving-wire level sensor 8, makes 12 contacts of two wires; And then make line level sensor 8 produce the signals of telecommunication and pass to relay 9 through lead; Relay 9 is received signal rear drive electromagnetism main part 20 and alarm 16, makes 20 energisings of electromagnetism main part, so just can not start electric sewer through pedal 5.
When connecting civil power, capacitor 15 is in charged state, and time that its charging is required and motor 4 equate from starting to the required time that runs well; , capacitor 15 chargings just are equivalent to open circuit when finishing here.Can learn that thus relay all can be triggered in the each power up of electric sewer, and then make the 20 energising work of electromagnetism main part, make pedal ineffective.Motor all is a starting under no load in the time of so just guaranteeing to start shooting at every turn, thereby has got rid of motor because of the major hidden danger that load starting burns initiation fire, has prolonged the service life of motor.Use up or break bottom line or bouncing pilotage or bottom line when crossing pine at the bottom line of the Sewing machines that runs up; Line level sensor 8 sends fault-signal; This moment, capacitor 15 was in discharge condition; The change in voltage at its two ends is very little, so fault-signal is able to time-delay, the stability of assurance electromagnetism expansion bend 10 each actions.
Another kind of embodiment of the present invention, electric sewer have comprised head 1, platen 2, support 3, motor 4, pedal 5 and bottom line supervising device.Platen 2 is installed on the support 3, on the top of platen 2 head 1 has been installed, head 1 is being provided with two groups of presser feets 6 and eedle 7 of accomplishing stitching work with platen 2 relative positions.Presser feet 6 can vertically move up and down, be pressed on below it the cloth 14 that will sew up, presser feet 6 is provided with two U-shaped openings.Eedle 7 bottoms have sewing thread, its up and down during vertical motion just from the U-shaped opening part turnover of presser feet 6, and sewing thread sewed up in the cloth 14.Motor 4 is arranged on platen 2 bottoms, which is provided with clutch.Pedal 5 is movably connected in motor 4 bottoms.The bottom line supervising device comprises two line level sensors 8, relay 9, capacitor 15, alarm 16 and electromagnetism expansion bend 10.Both sides at presser feet 6 all are provided with horizontal slideway 11, and each line level sensor 8 all is installed on the slideway 11.The cross section of this slideway 11 is trapezoidal, and online level sensor 8 is provided with a dovetail groove, thereby line level sensor 8 is movably connected on the presser feet 6 through dovetail groove, and two line level sensors 8 can move by independent horizontal.Each line level sensor 8 is provided with two to be separated and rubber-like wire 12; The diameter of two one metal wires 12 is inequality; Wherein the diameter of one metal wire 12 is greater than the diameter of another one metal wire 12; Two one metal wires, the 12 horizontal U-shaped opening tops that are distributed in, the bearing of trend of wire 12 intersects with the opening direction of U-shaped opening; Inboard wire 12 diameters of U-shaped opening are bigger than another root diameter being positioned at, and the contact probability of such two one metal wires 12 on horizontal plane is just very high.Two line level sensor 8 parallel connection backs are connected with the signal input part of relay 9 through lead, and the control end of relay 9 is connected with electromagnetism main part 20 through lead.The movable end of pedal 5 is connected with electromagnetism expansion bend 10, again through the clutch linkage of connecting rod 13 with motor 4.
Equally, the sewing thread during operate as normal on each eedle 7 is pulled into vertical state by eedle 7 and cloth 14 at every turn, and away from the wire 12 of line level sensor 8; Electromagnetism main part 20 is in off-position.And use up or bouncing pilotage or bottom line when crossing pine when the bottom line of the Sewing machines that runs up; Sewing thread on any one eedle 7 is pulled into heeling condition by eedle 7 and cloth 14; And, make 12 contacts of two wires, and then make this line level sensor 8 produce signals of telecommunication and pass to relay 9 through lead at the wire 12 of inclination pusher moving-wire level sensor 8; Relay 9 is received signal rear drive electromagnetism main part 20 and alarm 16; Make the 20 energising work of electromagnetism main part, so just can not control the electric sewer outputting power through pedal 5, electric sewer quits work.Therefore the bottom line that corresponding any one eedle 7 takes place uses up or the loose excessively situation of bottom line or bouncing pilotage or bottom line of breaking all can impel electric sewer to quit work.
Sewing thread is drawn as the state of inclination when abnormal condition; The angle that tilts increases along with the increase of the vertical range between eedle 7 and the cloth 14, therefore can adjust the sensitivity of line level sensor 8 through changing line level sensor 8 and eedle 7 distance in the horizontal direction.If line level sensor 8 is very little with eedle 7 distance in the horizontal direction, so the response time of bottom line supervising device short more, can just can take the shutdown measure at that quarters that abnormality takes place with prestissimo, the quality of operation is made in assurance.
The device and the prior art comparison that are used to monitor the bottom line situation that the present invention has; Advantage simple in structure, that production cost is low, and any abnormal condition can both be in time bottom line supervising device through electric sewer detect; Need not realize the bottom line monitoring through complicated electronic control system; Reach the loosening purpose that can both autostop of no bottom line or disconnected bottom line or bouncing pilotage or bottom line, realize effectively utilizing the effect of making material, practiced thrift resource; Simultaneously can also reduce the product rework rate, enhance productivity.And utilize the charge-discharge characteristic of capacitor 15; Motor can both be in the no-load running state behind any once electrification; The back motor under the situation of restoring electricity of avoiding having a power failure directly drives head load starting difficulty and causes the situation that motor burns; Thereby play the purpose of protection motor, prolong motor service life.
Claims (10)
1. electric sewer, it comprises head (1), platen (2), support (3), motor (4), pedal (5), said platen (2) is arranged on support (3) top; Said head (1) is arranged on the platen (2), and head (1) is being provided with presser feet (6) and eedle (7) with the relative position of platen (2), and said presser feet (6) is provided with the U-shaped opening; Said motor (4) is provided with clutch; Said clutch is through connecting rod (13) and pedal (5) interlock, and it is characterized in that: said electric sewer also comprises the bottom line supervising device, and this bottom line supervising device comprises line level sensor (8), relay (9), capacitor (15), alarm (16) and electromagnetism expansion bend (10); Said line level sensor (8) is connected with relay (9); Said relay (9) is connected with electromagnetism expansion bend (10), and said capacitor (15) is parallelly connected with line level sensor (8), and said electromagnetism expansion bend (10) is parallelly connected with alarm (16); Said line level sensor (8) is connected on the presser feet (6); And said line level sensor (8) is arranged on the U-shaped opening top of presser feet (6), and an end of said electromagnetism expansion bend (10) is connected with pedal (5), and the other end is connected with connecting rod (13); Said electromagnetism expansion bend comprises electromagnetism main part (20), fore shaft connecting rod (21), lock tube (22), locking plate (23), linkage and extension connecting rod (24); Electromagnetism main part (20) is provided with can be from inner outwards elongation of electromagnetism main part (20) or the expansion link (33) that inwardly shrinks; The two ends up and down of electromagnetism main part (20) body are being fixed fore shaft connecting rod (21) respectively and are being extended connecting rod (24); The bearing of trend of fore shaft connecting rod (21) is opposite with the bearing of trend that extends connecting rod (24); Fore shaft connecting rod (21) inserts in the lock tube (22), and linkage comprises T shape connecting rod (27), unlock lever I (28) and unlock lever II (29), and locking plate (23) is fixed on the unlock lever II (29).
2. according to the said electric sewer of claim 1, it is characterized in that: said line level sensor (8) flexibly connects with presser feet (6).
3. according to the said electric sewer of claim 2, it is characterized in that: said line level sensor (8) is provided with dovetail groove, and said presser feet (6) is provided with the slideway (11) of corresponding dovetail groove.
4. according to the said electric sewer of claim 3, it is characterized in that: said slideway (11) is horizontal.
5. according to the said electric sewer of claim 1, it is characterized in that: said bottom line supervising device comprises at least two line level sensors (8), parallel connection between the said line level sensor (8).
6. according to the said electric sewer of claim 5, it is characterized in that: said line level sensor (8) flexibly connects with presser feet (6).
7. according to the said electric sewer of claim 6, it is characterized in that: said line level sensor (8) is provided with dovetail groove, and said presser feet (6) is provided with the slideway (11) of corresponding dovetail groove.
8. according to the said electric sewer of claim 7, it is characterized in that: said slideway (11) is horizontal.
9. according to claim 2 or 5 said electric sewers, it is characterized in that: said line level sensor (8) comprises two rubber-like wires (12), the horizontal U-shaped opening top that is distributed in of said wire (12).
10. according to the said electric sewer of claim 9, it is characterized in that: wherein the diameter of an one metal wire (12) is greater than the diameter of another one metal wire (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100626787A CN101314899B (en) | 2008-07-01 | 2008-07-01 | Electric sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100626787A CN101314899B (en) | 2008-07-01 | 2008-07-01 | Electric sewing machine |
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| Publication Number | Publication Date |
|---|---|
| CN101314899A CN101314899A (en) | 2008-12-03 |
| CN101314899B true CN101314899B (en) | 2012-04-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100626787A Expired - Fee Related CN101314899B (en) | 2008-07-01 | 2008-07-01 | Electric sewing machine |
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| Country | Link |
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| CN (1) | CN101314899B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107099952A (en) * | 2017-05-27 | 2017-08-29 | 江苏工程职业技术学院 | A kind of monitor-type electric sewer |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103046244B (en) * | 2011-10-13 | 2016-05-04 | Juki株式会社 | The control device of sewing machine |
| CN105887346A (en) * | 2016-07-01 | 2016-08-24 | 天津市中马骏腾精密机械制造有限公司 | Sewing machine with thread breakage and cloth detection function |
| CN106637730A (en) * | 2016-11-16 | 2017-05-10 | 广西柳州信社包装物品有限公司 | Flat sewing machine |
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| CN2298269Y (en) * | 1997-06-02 | 1998-11-25 | 杨贵煌 | Motor power take-off and thread breakage control device for knitting loom |
| CN2357022Y (en) * | 1997-10-28 | 2000-01-05 | 陈满雄 | Reversing sewing device for improved industrial sewing machine |
| CN2557552Y (en) * | 2002-07-16 | 2003-06-25 | 吴新坤 | Clutch motor controller for nylon zipper sewing machine |
| CN1962990A (en) * | 2006-12-06 | 2007-05-16 | 中捷缝纫机股份有限公司 | Wire-off detection device for sewing machine |
| CN201236264Y (en) * | 2008-07-01 | 2009-05-13 | 李永鹏 | Electric sewing machine |
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|---|---|---|---|---|
| US4470362A (en) * | 1983-10-11 | 1984-09-11 | Kear Jerry S | Thread saver control |
| CN2298269Y (en) * | 1997-06-02 | 1998-11-25 | 杨贵煌 | Motor power take-off and thread breakage control device for knitting loom |
| CN2357022Y (en) * | 1997-10-28 | 2000-01-05 | 陈满雄 | Reversing sewing device for improved industrial sewing machine |
| CN2557552Y (en) * | 2002-07-16 | 2003-06-25 | 吴新坤 | Clutch motor controller for nylon zipper sewing machine |
| CN1962990A (en) * | 2006-12-06 | 2007-05-16 | 中捷缝纫机股份有限公司 | Wire-off detection device for sewing machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107099952A (en) * | 2017-05-27 | 2017-08-29 | 江苏工程职业技术学院 | A kind of monitor-type electric sewer |
| CN107099952B (en) * | 2017-05-27 | 2019-11-29 | 江苏工程职业技术学院 | A kind of monitor-type electric sewer |
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| CN101314899A (en) | 2008-12-03 |
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