CN202849761U - Electric sewing machine trimming mechanism - Google Patents
Electric sewing machine trimming mechanism Download PDFInfo
- Publication number
- CN202849761U CN202849761U CN 201220498889 CN201220498889U CN202849761U CN 202849761 U CN202849761 U CN 202849761U CN 201220498889 CN201220498889 CN 201220498889 CN 201220498889 U CN201220498889 U CN 201220498889U CN 202849761 U CN202849761 U CN 202849761U
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- trimming
- sewing machine
- electric sewing
- electromagnetic actuator
- trimming mechanism
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Abstract
The utility model relates to an electric sewing machine trimming mechanism which comprises a trimming electromagnetic driving device controlled by the sewing machine control module. An output shaft of the trimming electromagnetic driving device is connected with a moving cutter for trimming through a pull rod . The electric sewing machine trimming mechanism is characterized in that the electromagnetic driving device is a bidirectional electromagnetic actuator capable of driving the pull rod to reciprocate. The electric sewing machine trimming mechanism, compared with the prior art, adopts the bidirectional electromagnetic actuator to replace the original spring rod reset mechanism, when the electric sewing machine trimming mechanism is at work, the electromagnetic driving actuator only needs to pull or send back the pull rod to drive the moving cutter for trimming to trim and reset, and therefore spare parts are reduced, and the structure of the trimming mechanism is simplified. In addition, when the electric sewing machine trimming mechanism is at work, elasticity of a spring in the pull rod reset mechanism is not need to be overcome, and power consumption is greatly reduced. At the same time, work instability caused by the spring fatigue under the condition of continuous work can be avoided, so that the electric sewing machine trimming mechanism always works accurately, steadily and reliably.
Description
Technical field
The utility model relates to electric industrial sewing machine, specifically refers to a kind of electric sewer thread cutting mechanism.
Background technology
Trimming assembly in the electric sewer and thread releasing mechanism interlock, thread releasing mechanism is to drive action by the trimming assembly, need to repeatedly change transmission direction and the trimming assembly passes to thread releasing mechanism with the actuating signal of loose ends, therefore, the structure of trimming assembly and thread releasing mechanism is very complicated.
The patent No. is the cutting facility that the utility model patent of ZL97204668.2 has proposed a kind of Sewing machines, and it comprises thread cutting mechanism and loose disc mechanism.Wherein, described thread cutting mechanism is connected with the main shaft of Sewing machines, comprise the trimming cam and be located in grooved cam on the axial rearward end side of trimming cam, described cam is fixed on the main shaft and with integrated spindle axis and rotates, and described grooved cam forms the trimming action message that makes the trimming cutting knife carry out the trimming action.Described loose disc mechanism comprises the pine dish recess with above-mentioned cam unitary rotation, and driven by pine dish recess, make the loosening linkage of tension disk its with the thread cutting mechanism needle-foot-lifting electro-magnetic driving apparatus, comprise electromagnetic actuator device and linkage.Wherein, described electromagnetic actuator device can be arranged on the side end cap of Sewing machines headstock or top end.Identical in the above-mentioned known technology of the operation principle of this cutting facility all is to adopt thread cutting mechanism to drive thread releasing mechanism.The parts of this cutting facility also are very various simultaneously, and there are above-mentioned problem equally in its processing, manufacturing, installation, maintenance.
Above-mentioned cutting facility can the bad phenomenon of trimming occur because of the stationary problem of two mechanisms when high-speed sewing; And also there is another problem in two kinds of cutting facilities of above-mentioned this, that is, behind trimming, owing to there are not special-purpose parts that the end of a thread of bottom line is fixed, the end of a thread can retract near the rotating shuttle.Can occur when withdrawal of needle again like this that bottom line hangs to come up or the phenomenon of bouncing pilotage, impact is made effect, is reduced sewing efficiency.
For this reason, Granted publication number discloses a kind of electric sewer thread cutting mechanism for the utility model patent of CN201317861, as shown in Figure 3, this thread cutting mechanism comprises trimming assembly, loose ends assembly and by the directly actuated trimming electromagnetic actuator device of the control module of this Sewing machines; Wherein said trimming assembly comprises the trimming electromagnetic actuator device, the moving knife of the trimming that cooperatively interacts and stationary knife, and described trimming electromagnetic actuator device connects moving knife by drag link mechanism; Described loose ends assembly comprises that by the directly actuated loose ends electromagnetic actuator device of the control module of this Sewing machines this loose ends electromagnetic actuator device passes to the loose ends action by linkage the tension disk of Sewing machines.The precision of the thread cutting mechanism trimming that this utility model provides and loose ends action is high, synchronism is good, the end of a thread of cutting off in time can be clamped, and the phenomenon of having avoided the end of a thread to break away from is again made Shi Buhui and bouncing pilotage and bottom line are occurred and hang the situation of not coming up.This utility model is spring reset by being connected with pull bar after trimming is complete.This structure need to spur this spring simultaneously when trimming electromagnetic actuator device pulling pull bar, when the trimming electromagnetic actuator device quit work, recoil of spring resetted pull bar, entered trimming state undetermined.Like this, the trimming electromagnetic actuator device need to overcome the elastic force acting of spring simultaneously when the pulling pull bar, and not only power consumption is high, and under continuous duty, spring is tired easily, can affect the stability of trimming.
Summary of the invention
Technical problem to be solved in the utility model is the present situation for prior art, and a kind of low in energy consumption and stable electric sewer thread cutting mechanism that can not be subject to the impact of work duration of operating mode is provided.
The utility model solves the problems of the technologies described above the technical scheme that adopts: this electric sewer thread cutting mechanism, comprise the trimming electromagnetic actuator device by Sewing machines control module control action, the output shaft of this trimming electromagnetic actuator device connects the trimming moving knife by pull bar, it is characterized in that described electromagnetic actuator device is for can drive the reciprocating bi-directional electromagnetic driver of described pull bar.
Described electromagnetic driver can be selected the electromagnetic driver of any one bidirectional-movement in the prior art.
Compared with prior art, the utility model adopts the bi-directional electromagnetic driver to replace original spring pull bar resetting-mechanism, during work, electromagnetic driver work only need to spur or send back to pull bar and can drive trimming moving knife trimming, reset, parts have not only been reduced, simplified the structure of thread cutting mechanism, and do not needed to overcome the elastic force of pull bar resetting-mechanism medi-spring during trimming, its power consumption reduces greatly; Compare for the utility model patent of CN201317861 with Granted publication in the background technology number, the power of employed bi-directional electromagnetic drive unit only needs 25 to turn round in the utility model, and Granted publication number then needs 70 power of turning round for the trimming electromagnetic actuator device among the CN201317861; By working hour meter 8 hours every days, the power consumption of every electric sewer is reduced to 0.4 degree, energy-saving effect highly significant by 1.2 original degree; Simultaneously, the utility model has been avoided in the tired caused job insecurity phenomenon of continuous operation situation lower spring, so that the transmission of the action of this electric sewer thread cutting mechanism is accurate, stable, reliable all the time.
Description of drawings
Fig. 1 is the schematic perspective view (trimming armed state) of the utility model embodiment assembly structure;
Fig. 2 is the solid assembling schematic diagram (trimming state) of the utility model embodiment assembly structure;
Fig. 3 is the schematic perspective view of the utility model embodiment decomposition texture;
Fig. 4 is the schematic perspective view of the assembly structure of the thread releasing mechanism of cooperation the utility model embodiment work;
Fig. 5 is that Granted publication number is the perspective view of the assembly structure of the utility model of CN201317861 in the utility model embodiment background technology.
The specific embodiment
Embodiment is described in further detail the utility model below in conjunction with accompanying drawing.
Paper once Granted publication number is the disclosed electric sewer thread cutting mechanism of utility model of CN201317861 ".
As shown in Figure 5, the thread cutting mechanism of this electric sewer comprises moving knife 8 and the stationary knife 9 that cooperatively interacts and cut off line, and moving knife 8 is articulated on the base 6, and stationary knife 9 is fixed on the base 6; The motion of moving knife 8 is controlled by the pendulum fork 7 that is fixed on the base 6, and the shape of above-mentioned each part, structure and mounting means are known technology.Pendulum fork 7 is hinged with an end of pull bar 3, and the other end of pull bar 3 is articulated on the output shaft 11 of trimming electromagnetic actuator device 2.Trimming electromagnetic actuator device 2 is directly controlled according to the setting of program by the control module (not shown) of this electric sewer.Vertically be fixed with jointed shaft 15 on the output shaft 11 of trimming electromagnetic actuator device 2; One end of pull bar 3 is hinged on the top of jointed shaft 15, and an end of back-moving spring 4 is fixed on the below of jointed shaft 15, and the other end of back-moving spring 4 is fixed on the Sewing machines headstock by connecting rod 17, and back-moving spring 4 adopts extension spring.
When needing trimming, control module is sent instruction, closes the power supply of logical loose ends electromagnetic actuator device, and the output shaft driving of loose ends electromagnetic actuator device is attached thereto the push rod that connects and travels forward, and backs down the outer cable-clamping disc of tension disk, and this moment, Sewing machines was reached the standard grade loosening.Almost in the work of loose ends electromagnetic actuator device, control module is closed the power supply of logical trimming electromagnetic actuator device 2, the output shaft 11 pulling pull bars 3 of trimming electromagnetic actuator device, the elastic force that needs simultaneously to overcome spring 4 will spur spring, make spring 4 be in extended state, and pull bar 3 rotates, swing pendulum fork 7, pendulum fork 7 drives moving knife 8 and rotates, and moving knife 8 is clamp-oned between stationary knife 9 and the thread tension disc 10, and line is cut off.
To the electric sewer of routine, the power minimum of employed trimming electromagnetic actuator device needs 160W in this thread cutting mechanism, its continuous operation power consumption in 8 hours 1.2 degree; Spring 4 after 4 hours, namely the hysteresis phenomenon that resets can occur in continuous operation simultaneously.
As shown in Figures 1 to 4, the electric sewer thread cutting mechanism in the present embodiment has been cancelled spring 4 and the connecting rod 16 in the above-mentioned thread cutting mechanism, and it only comprises that power is the parts such as bi-directional electromagnetic driver 2 ', pull bar 3, moving knife 8 and stationary knife 9 of 70W.Identical in the connected mode of these parts and the above-mentioned thread cutting mechanism do not repeat them here.
Introduce the thread releasing mechanism that cooperates thread cutting mechanism work.
This loose ends assembly comprises the loose ends electromagnetic actuator device 12 that is installed on the headstock housing outer wall and is attached thereto the linkage that connects.Linkage is a straight rod-shaped push rod 13; Push rod 13 is installed between the output shaft and the outer cable-clamping disc on the tension disk 14 of loose ends electromagnetic actuator device 12.The action of loose ends electromagnetic actuator device 12 also is by the direct control action of the control module of this electric sewer.
The operation principle of thread cutting mechanism is as follows in the present embodiment:
When needing trimming, electric sewer sends instruction in control module according to pre-set program, close first the power supply of logical loose ends electromagnetic actuator device 12, loose ends electromagnetic actuator device 12 gets electric work, the push rod 13 that its output shaft promotes to be fixed thereon travels forward, back down the outer cable-clamping disc of tension disk 14, this moment, Sewing machines was reached the standard grade loosening.Almost in 12 work of loose ends electromagnetic actuator device, control module is closed the power supply of logical trimming electromagnetic actuator device 2, the output shaft 11 of trimming electromagnetic actuator device does not overcome the elastic force of spring at needs, its direct pull pull bar 3, pull bar 3 is rotated, swing pendulum fork 7, pendulum fork 7 drives moving knife 8 and rotates, moving knife 8 is clamp-oned between stationary knife 9 and the thread tension disc 10, and line is cut off.Moving knife streaks after the trimming, and the trimming electromagnetic driver is counteragent under the control of control module, directly pull bar 3 is retracted to reset, in order to carry out next trimming action.
Claims (1)
1. electric sewer thread cutting mechanism, comprise the trimming electromagnetic actuator device by Sewing machines control module control action, the output shaft of this trimming electromagnetic actuator device connects the trimming moving knife by pull bar, it is characterized in that described electromagnetic actuator device is for can drive the reciprocating bi-directional electromagnetic driver of described pull bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220498889 CN202849761U (en) | 2012-09-27 | 2012-09-27 | Electric sewing machine trimming mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220498889 CN202849761U (en) | 2012-09-27 | 2012-09-27 | Electric sewing machine trimming mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202849761U true CN202849761U (en) | 2013-04-03 |
Family
ID=47980979
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220498889 Expired - Fee Related CN202849761U (en) | 2012-09-27 | 2012-09-27 | Electric sewing machine trimming mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202849761U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102888721A (en) * | 2012-09-27 | 2013-01-23 | 庄卫东 | Thread trimming mechanism of electric sewing machine |
| CN105803697A (en) * | 2016-05-26 | 2016-07-27 | 杰克缝纫机股份有限公司 | Chain stitch loosing prevention device |
| CN105908397A (en) * | 2016-06-29 | 2016-08-31 | 拓卡奔马机电科技有限公司 | Sewing machine and driving device of trimming mechanism of sewing machine |
-
2012
- 2012-09-27 CN CN 201220498889 patent/CN202849761U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102888721A (en) * | 2012-09-27 | 2013-01-23 | 庄卫东 | Thread trimming mechanism of electric sewing machine |
| CN105803697A (en) * | 2016-05-26 | 2016-07-27 | 杰克缝纫机股份有限公司 | Chain stitch loosing prevention device |
| CN105908397A (en) * | 2016-06-29 | 2016-08-31 | 拓卡奔马机电科技有限公司 | Sewing machine and driving device of trimming mechanism of sewing machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20160927 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |