CN109778434A - A kind of device and method for looking for upper needle position for sewing machine booting - Google Patents
A kind of device and method for looking for upper needle position for sewing machine booting Download PDFInfo
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- CN109778434A CN109778434A CN201910227349.1A CN201910227349A CN109778434A CN 109778434 A CN109778434 A CN 109778434A CN 201910227349 A CN201910227349 A CN 201910227349A CN 109778434 A CN109778434 A CN 109778434A
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Abstract
The present invention provide it is a kind of look for the device and method of upper needle position for sewing machine booting, device include main motor, the first detection sensor, the second detection sensor and all with main shaft relatively-stationary first by induction pieces and second by induction pieces；When the first detection sensor sense first by induction pieces and export the first signal when, eedle is within the scope of upper needle position；The second detection sensor sense first by induction pieces after export second signal, to sense second by induction pieces after export third signal during, eedle is in the position of front half section stroke；The second detection sensor sense second by induction pieces after export third signal, to sense first by induction pieces after export second signal during, eedle is in the position of second half section stroke.The application can be realized sewing machine booting and look for needle position automatically and be parked in needle position, and eedle all moves up in above process, improve sewing machine safety in operation.
Description
Technical field
The present invention relates to sewing machine fields, more particularly to a kind of device and side for looking for upper needle position for sewing machine booting
Method.
Background technique
Sewing machine is formed one or more stitchings on sewing, is made one or more layers seam with one or more sewing thread
The machine that material interweaves or unites by a seam.Sewing machine is driven by main motor and is operated, and main motor drives the main shaft of sewing machine to rotate synchronously,
Main shaft drives eedle to pump by needle bar mechanism；Eedle has upper needle position and knit stitch position, and upper needle position refers to that eedle stops
Position when highest point is stayed in, knit stitch position refers to that position when eedle rests on minimum point, knit stitch position are located at needle plate in sewing machine
Lower section.In order to easy to operate, sewing machine, which has the function of executing automatically when booting, to be looked for needle position and is parked in needle position, in turn
Cloth is put into below eedle convenient for operative employee, rotation sewing machine hand-wheel is gone to move up eedle manually without operative employee.
Currently, looking for the method for needle position for sewing machine booting, there are mainly two types of: no matter one, sewing machine is worked as when being switched on
Preceding eedle where, sewing machine main motor all rotates forward an angle after booting, so that eedle is moved to needle position and is parked in
Needle position；Two, sewing machine needle is first judged whether in upper needle position, if so, sewing machine main motor does not rotate when sewing machine is switched on；If
No, then sewing machine main motor rotates forward an angle, so that eedle is moved to needle position and is parked in needle position.But when sewing machine is opened
When eedle is just at the position for being displaced downwardly to minimum point this section from highest point when machine, since above two method is all to pass through master
Motor makes eedle be moved to needle position after rotating forward an angle, during this movement travel of eedle be: first from current location
It is displaced downwardly to minimum point, moves to highest point from minimum point again；If the hand or foreign matter of current operation work be placed on just below eedle,
And directly go to be switched on, then be switched on after main motor at once will rotate forward, due to eedle be displaced downwardly to minimum point, be pierced into needle plate below
Movement travel, then eedle can prick the hand of operative employee or prick foreign matter, and then lead to situations such as eedle is broken, operative employee is injured,
There are security risks.
Summary of the invention
In view of the foregoing deficiencies of prior art, the purpose of the present invention is to provide one kind looks for for sewing machine booting
The device of needle position can be avoided eedle during looking for upper needle position and move down.
To achieve the above object, the present invention provides a kind of device that upper needle position is looked for for sewing machine booting, including sewing machine
In for driving spindle rotation main motor, all with relatively-stationary first detection sensor of sewing machine case and second detection pass
Sensor and all with main shaft relatively-stationary first by induction pieces and second by induction pieces, first detection sensor and
Two detection sensors are all connected with the main control module of main motor；The forward rotation direction of main motor, sewing machine when along sewing machine operating
In eedle have be displaced downwardly to the front half section stroke of knit stitch position from upper needle position and move up the second half section of supreme needle position from knit stitch position
Stroke；When the first detection sensor sense first by induction pieces and export the first signal when, eedle is in upper needle position range
It is interior；The second detection sensor sense first by induction pieces after export second signal, sense the to the second detection sensor
During two are exported third signal after induction pieces, eedle is in the position of front half section stroke；In the second detection sensor
Sense that second is exported third signal after induction pieces, senses that first is exported second after induction pieces to the second detection sensor
During signal, eedle is in the position of second half section stroke.
Further, first detection sensor is unipolarity Hall sensor, and second detection sensor is double
Polarity Hall sensor, described first by induction pieces and second is all magnet steel by induction pieces；First detection sensor and
Two detection sensors are arranged side by side along the circumferential direction of a setting circle, and the center of circle of the setting circle is located at the center of the motor shaft of main motor
On axis, described first is all disposed on the circumference of setting circle by induction pieces and is spaced apart in 180 ° by induction pieces and second,
Described first is felt by induction pieces by the polarity for the induction end that the first detection sensor and the second detection sensor incude, with second
The polarity for the induction end for answering part to be incuded by the second detection sensor is opposite.
Further, the sewing machine has handwheel, and the handwheel is coaxially set and synchronous with the motor shaft of main motor
Rotation, described first is all fixed on the end face of handwheel by induction pieces and second by induction pieces, first detection sensor and
Second detection sensor is all mounted on one and stops in needle Hall Plate, described first by the induction end of induction pieces and second by induction pieces
Induction end all the first detection sensor of face and the second detection sensor.
Further, the sewing machine has controller housing, and the controller housing is fixed on sewing machine case, described
Main control module and stops needle Hall Plate and be all mounted in controller housing.
Further, equipped with connecting interface, which connects the needle Hall Plate of stopping with main control module.
Further, when the first detection sensor sense first by induction pieces when, first detection sensor output
The first signal be high level；When the first detection sensor incudes less than first by induction pieces, first detection sensor
Export low level.
Further, when the first detection sensor sense first by induction pieces when, first detection sensor output
The first signal be low level；When the first detection sensor incudes less than first by induction pieces, first detection sensor
Export high level.
Further, when the second detection sensor sense first by induction pieces when, the of the output of the second detection sensor
Binary signal is low level；When the second detection sensor sense second by induction pieces when, the second detection sensor output third
Signal is high level.
Further, when the second detection sensor sense first by induction pieces when, the of the output of the second detection sensor
Binary signal is high level；When the second detection sensor sense second by induction pieces when, the second detection sensor output third
Signal is low level.
The application also provides a kind of method for looking for upper needle position for sewing machine booting, using as described above for sewing machine
The device of needle position is looked in booting, it is described for sewing machine booting look for needle position method the following steps are included:
S1, sewing machine booting, main control module judge whether the output signal of the first detection sensor is the first signal, if
It is that then main control module control main motor does not rotate, seam has been waited to instruct；If it is not, then executing following step S2；
S2, main control module judge the output signal of the second detection sensor for second signal or third signal, if
Binary signal then executes following step S3；If third signal then executes following step S4；
S3, main control module control main motor reversion, export the first signal when main control module receives the first detection sensor
When, main control module control main motor stops operating and seam has been waited to instruct；
S4, main control module control main motor rotate forward, and export the first signal when main control module receives the first detection sensor
When, main control module control main motor stops operating and seam has been waited to instruct.
As described above, the device and method of the present invention for looking for needle position for sewing machine booting, has beneficial below
Effect:
In the application, by judging that the output signal of the first detection sensor can determine whether that eedle whether in upper needle position, passes through
Judge the current location of eedle when the output signal of the second detection sensor can determine whether sewing machine booting, and then gives main control module control
Main motor processed provides foundation forward or reverse；When eedle is in the position of front half section stroke, main control module controls main motor
It inverts, eedle is made to move up supreme needle position；When eedle is in the position of second half section stroke, main control module is controlling main motor just
Turn, eedle is made to move up supreme needle position.Therefore, the application can be realized sewing machine booting and look for needle position automatically and be parked in needle position,
And eedle all moves up in above process, and then eedle is avoided to generate the stroke moved down, realizes sewing machine booting and looks for needle
The functions such as preventing hand pricking, anti-tie foreign matter, anti-broken needle, greatly improve sewing machine safety in operation and user experience when position.
Detailed description of the invention
Fig. 1 is the composition block diagram for looking for the device of needle position in the application for sewing machine booting.
Fig. 2 is the cooperation schematic diagram in the application between hall circuitboard and handwheel.
Fig. 3 is the structural schematic diagram of hall circuitboard in the application.
Fig. 4 is the structural schematic diagram of handwheel in the application.
Fig. 5 is the output signal curve along main motor forward rotation direction the first detection sensor and the second detection sensor.
Fig. 6 is the schematic diagram along main motor forward rotation direction eedle position.
Fig. 7 is the structural schematic diagram of sewing machine in the application.
Component label instructions
1 first detection sensor
2 second detection sensors
3 first by induction pieces
4 second by induction pieces
5 stop needle Hall Plate
51 connecting interfaces
52 fixation holes
6 casings
7 handwheels
8 controller housings
Specific embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation
Content disclosed by book is understood other advantages and efficacy of the present invention easily.
It should be clear that structure, ratio, size etc. that this specification attached drawing is drawn, only to cooperate specification revealed interior
Hold, so that those skilled in the art understands and reads, is not intended to limit the invention enforceable qualifications, therefore does not have skill
Essential meaning in art, the modification of any structure, the change of proportionate relationship or the adjustment of size can be produced not influencing the present invention
Under raw effect and the purpose that can reach, should all still it fall in the range of disclosed technology contents can cover.Together
When, cited such as "upper" in this specification, "lower", "left", "right", " centre " and " one " term, be merely convenient to chat
It states clearly, rather than to limit the scope of the invention, relativeness is altered or modified, and is changing technology without essence
It inside holds, when being also considered as the enforceable scope of the present invention.
The application provides a kind of sewing machine, is especially to provide a kind of device and side that upper needle position is looked for for sewing machine booting
Method.As shown in Figure 2 and Figure 7, sewing machine with casing 6, the main shaft being installed in rotation in casing 6, with main control module
Main motor, the controller housing 8 for being fixed on 6 right end of casing, handwheel 7 and the eedle that can up and down reciprocatingly move along a straight line, main motor
Main control module be mounted in controller housing 8；Main shaft and handwheel 7 are coaxially set and rotate synchronously, and the left end of main shaft passes through
Needle bar mechanism is connected with eedle, eedle is driven up and down reciprocatingly to move along a straight line, and the main control module of main motor is for controlling main motor just
Turn or inverts or stop operating.Main motor can be the main motor with motor shaft, be also possible to the main motor of no motor shaft；It is main
Motor and handwheel 7 are all fixed on the main shaft of sewing machine.In addition, sewing machine is during operation, main motor is to rotate forward, driving seam
Machine of threading operating；When eedle is in upper needle position, the mechanical angle of the motor shaft of main motor at this time is defined as 0 °；Therefore, in master
The motor shaft of motor from 0 ° just going to 360 ° of this circles during, the movement travel of eedle are as follows: first be displaced downwardly to down from upper needle position
The front half section stroke of needle position and the second half section stroke for moving up supreme needle position from knit stitch position again.Further, the electricity of main motor
Arbor is just going to 180 ° from 0 °, and eedle is in front half section stroke, i.e., eedle is displaced downwardly to knit stitch position from upper needle position；The motor of main motor
Axis is just going to 360 ° from 180 °, and eedle is in second half section stroke, i.e., eedle moves up supreme needle position from knit stitch position.
It is provided by the present application to look for the device and method of needle position mainly to realize following function for sewing machine booting: to sew
Rest on eedle near needle position or upper needle position after machine booting, and then convenient for cloth is put into machine in seam preceding operative employee
The lower section of needle.As shown in Figure 1, for sewing machine booting look for needle position device include main motor, all with sewing machine case 6 it is opposite
Fixed the first detection sensor 1 and the second detection sensor 2 and all with main shaft relatively-stationary first by induction pieces 3 and
Second is all connected with the main control module of main motor by induction pieces 4, the first detection sensor 1 and the second detection sensor 2；Especially
Ground, the first detection sensor 1, the second detection sensor 2, first are by induction pieces 3 and the second peace by induction pieces 4 in sewing machine
Holding position should meet following conditions: when the first detection sensor 1 sense first by induction pieces 3 and export the first signal when, machine
Needle is within the scope of upper needle position, and upper needle position range refers near needle position and the upper needle position of permission；Along the forward rotation direction of main motor,
The second detection sensor 2 sense first by induction pieces 3 after export second signal, sense the to the second detection sensor 2
During two are exported third signal after induction pieces 4, eedle is in the position of front half section stroke, therefore eedle is in front half section
The output signal of the second detection sensor 2 is all second signal when in the position of stroke；Is sensed in the second detection sensor 2
Two are exported third signal after induction pieces 4, sense that first is exported second signal after induction pieces 3 to the second detection sensor 2
During, eedle is in the position of second half section stroke, therefore the second detection passes when eedle is in the position of second half section stroke
The output signal of sensor 2 is all third signal.Therefore, when eedle is in upper needle position, the first detection sensor 1 can be sensed
First by induction pieces 3, and the second detection sensor 2 can sense first by induction pieces 3, therefore the first detection sensor 1 exports
Signal be the first signal, the second detection sensor 2 output signal second signal is changed by third signal.When eedle is in
When knit stitch position, the first detection sensor 1 incudes less than first by induction pieces 3, and the second detection sensor 2 can sense second
Third signal is changed by second signal by the signal of induction pieces 4, therefore the output of the second detection sensor 2.In addition, the present embodiment
In, when eedle, which is in, removes the position near upper needle position and upper needle position, the first detection sensor 1 all incudes and is incuded less than first
Part 3.
Therefore, this application involves for sewing machine booting look in the device of upper needle position, main control module according to first detection
Whether whether the signal that sensor 1 exports is the first signal, can determine whether eedle currently near upper needle position and upper needle position；Master control
Module is second signal or third signal according to the signal that the second detection sensor 2 exports, and can determine whether that eedle is presently at
Position in front half section stroke is in the position in second half section stroke.Based on using it is above-mentioned for sewing machine booting look for upper needle
Position device, this application involves for sewing machine booting look for upper needle position method the following steps are included:
Step S1, sewing machine is switched on, and main control module judges whether the output signal of the first detection sensor 1 is the first letter
Number, if so, illustrating that eedle currently has been located near needle position or upper needle position, then main control module control main motor is not rotated, is waited
Play seam instruction；If it is not, illustrating that eedle is not currently near needle position or upper needle position, then following step S2 is executed.Step S1 is main
It is first to judge whether the current location of eedle is near needle position or upper needle position.
Step S2, main control module judge the output signal of the second detection sensor 2 for second signal or third signal, if
It is second signal, then executes following step S3；If third signal then executes following step S4.Step S2 is mainly judgement machine
The current location of needle is the position that the position in front half section stroke is in second half section stroke.
Step S3, the current location of eedle is in the position in front half section stroke, at this point, main control module control main motor is anti-
Turn, then eedle is moved up from current location, when main control module, which receives the first detection sensor 1, exports the first signal, illustrates machine
Needle has moved up near supreme needle position or upper needle position, and main control module control main motor stops operating and seam has been waited to instruct.
Step S4, the current location of eedle is in the position in second half section stroke, at this point, main control module control main motor is just
Turn, then eedle is moved up from current location, when main control module, which receives the first detection sensor 1, exports the first signal, illustrates machine
Needle has moved up near supreme needle position or upper needle position, and main control module control main motor stops operating and seam has been waited to instruct.
Therefore, the application is by judging that the output signal of the first detection sensor 1 can determine whether that eedle whether in upper needle position, leads to
The current location for judging eedle when the output signal of the second detection sensor 2 can determine whether sewing machine booting is crossed, and then gives master control mould
Block control main motor provides foundation forward or reverse.The application realizes that sewing machine booting looks for needle position automatically and is parked in needle position,
And eedle all moves up in above process, and then eedle is avoided to generate the stroke moved down, realizes sewing machine booting and looks for needle
The functions such as preventing hand pricking, anti-tie foreign matter, anti-broken needle, greatly improve sewing machine safety in operation and user experience when position；Meanwhile this Shen
It please be easily achieved, is at low cost, high reliablity, not influencing upper and lower needle stop function when sewing machine is normally sewed also, it is versatile.
In addition, there is unipolarity Hall sensor in some existing sewing machines, it is based on this, the first inspection in the application
The preferred selection unipolarity Hall sensor of sensor 1 is surveyed, the second detection sensor 2 preferably selects bipolarity Hall sensor,
The cost of device can be reduced；First by induction pieces 3 and second by induction pieces 4 all be magnet steel；As shown in figure 3, the first detection passes
Sensor 1 and the second detection sensor 2 are arranged side by side along the circumferential direction of a setting circle, and the center of circle of setting circle is located at the central axis of main shaft
On (i.e. the pivot center of main motor)；As shown in figure 4, first is all disposed within setting circle by induction pieces 4 by induction pieces 3 and second
It is spaced apart on circumference and in 180 °；First is incuded by the first detection sensor 1 and the second detection sensor 2 by induction pieces 3
It is the polarity of induction end, opposite with the polarity of induction end that second is incuded by induction pieces 4 by the second detection sensor 2.It is shown in Fig. 4
In view, first by the induction end of induction pieces 3 be the pole S, second by the induction end of induction pieces 4 be the pole N.
In addition, as shown in Figures 2 to 4, first is all fixed on the end face of handwheel 7 by induction pieces 3 and second by induction pieces 4
On, the first detection sensor 1 and the second detection sensor 2 are all mounted on one and stop in needle Hall Plate 5, and first by the sense of induction pieces 3
Ying Duan (pole S) and second by the induction end (pole N) of induction pieces 4 all face the first detection sensor 1 and the second detection sensor 2,
Stop needle Hall Plate 5 equipped with fixation hole 52, stops needle Hall Plate 5 by the fastener being threaded through in fixation hole 52 and be fixed on controller
In housing 8.First detection sensor 1 and the second detection sensor 2 are installed to stop needle Hall Plate 5 and be equipped with first to be felt
It answers part 3 and second to be matched by the handwheel 7 of induction pieces 4, collectively forms and stop needle signaling module, stop needle signaling module to main control module
Feedback eedle stops needle position signal, and main control module controls the rotation of main motor.More preferably, stop needle Hall Plate 5 and be equipped with connection
Interface 51 stops needle Hall Plate 5 and is connected by the connecting interface 51 with main control module, and will stop needle position signal and send master control mould to
Block.
Stop needle position signal also be the first detection sensor 1 and the second detection sensor 2 output signal.For first
The output signal of detection sensor 1: when the first detection sensor 1 sense first by induction pieces 3 when, the first detection sensor 1
First signal of output is high level；When the first detection sensor 1 incudes less than first by induction pieces 3, the first detection sensing
Device 1 exports low level.Alternatively, when the first detection sensor 1 sense first by induction pieces 3 when, the first detection sensor 1 output
The first signal be low level；When the first detection sensor 1 incudes less than first by induction pieces 3, the first detection sensor 1 is defeated
High level out.For the output signal of the second detection sensor 2: when the second detection sensor 2 senses first by induction pieces 3
When, the second signal of the second detection sensor 2 output is low level；When the second detection sensor 2 senses second by induction pieces 4
When, the third signal of the second detection sensor 2 output is high level.Alternatively, when the second detection sensor 2 senses that first is felt
When answering part 3, the second signal of the second detection sensor 2 output is high level；When the second detection sensor 2 senses that second is felt
When answering part 4, the third signal of the second detection sensor 2 output is low level.More preferably, in the present embodiment, stop needle position signal
Are as follows: as shown in Figure 5 and Figure 6, when first is rotated synchronously by induction pieces 4 with handwheel 7 by induction pieces 3 and second, first is incuded
C point when the pole S of part 3 reaches at unipolarity Hall sensor, in as Fig. 6, unipolarity Hall sensor generate low level letter
Number, which is above-mentioned first signal；First when leaving unipolarity Hall sensor by the pole S of induction pieces 3, be in Fig. 6
D point, unipolarity Hall sensor generate high level signal；Second, which reaches or leave unipolarity Hall by the pole N of induction pieces 4, passes
When at sensor, what unipolarity Hall sensor generated is still high level signal；The low level letter that unipolarity Hall sensor generates
During number, the angle that handwheel 7 turns over is 10 °, and the middle position of C point and D point is the upper needle position of eedle, the area between C point and D point
Domain is the upper needle position region for allowing eedle to stop, belongs to the region near needle position and upper needle position, is also upper needle position range, CD
Angle between two o'clock is determined by the characteristic and model of unipolarity Hall sensor.In addition, first is reached by the pole S of induction pieces 3
A point when at bipolarity Hall sensor, in as Fig. 6, bipolarity Hall sensor generate low level signal, which is
Above-mentioned second signal simultaneously continues to keep, until second by induction pieces 4 the pole N reach bipolarity Hall sensor at when, be scheme
B point in 6, bipolarity Hall sensor generate high level signal, which is above-mentioned third signal and continues to keep, A point
For the upper needle position of eedle, B point is the knit stitch position of eedle.
Based on Fig. 5 and it is shown in fig. 6 stop needle position signal, for sewing machine booting look for upper needle position method include following step
It is rapid:
Step 1: sewing machine has following premise: when the mechanical angle of the motor shaft of main motor, handwheel 7 and main shaft is 0 °,
Eedle is in upper needle position position；When the mechanical angle of the motor shaft of main motor, handwheel 7 and main shaft is -5 ° -5 °, eedle all in
Near upper needle position and upper needle position, for the position range for allowing eedle to stop after sewing machine booting；Motor shaft, the handwheel 7 of main motor
When mechanical angle with main shaft is 180 °, eedle is in knit stitch position position；The machinery of the motor shaft of main motor, handwheel 7 and main shaft
For angle from when just going to 180 ° for 0 °, eedle is displaced downwardly to knit stitch position from upper needle position, and forward rotation direction is also the counter clockwise direction in Fig. 6；
For the mechanical angle of the motor shaft of main motor, handwheel 7 and main shaft from when just going to 360 ° for 180 °, eedle moves up supreme needle from knit stitch position
Position；Therefore, A → B in Fig. 6 is the front half section stroke that eedle moves down, and B → A in Fig. 6 is the second half section stroke that eedle moves up.
For unipolarity Hall sensor: handwheel 7 is just turning around during 360 °, exports low level within the scope of 0 ° -5 °, A → D,
High level is exported within the scope of 5 ° -355 °, D → C, low level is exported within the scope of 355 ° -360 °, C → A, is recycled with this.For
Bipolarity Hall sensor: handwheel 7 is just turning around during 360 °, exports low level within the scope of 0 ° -180 °, A → B,
180 ° -360 °, high level is exported within the scope of B → A, recycled with this.
Step 2: sewing machine is switched on, main control module judges the output signal of unipolarity Hall sensor, if low level,
Illustrate the current position of eedle near upper needle position or upper needle position, namely between C-D point, then main control module controls main motor not
It is rotated；If high level, illustrate the current position of eedle not near upper needle position and upper needle position, namely in 5 ° -355 °, D
Between → C point, then following step three is executed.
Step 3: main control module judges the output signal of bipolarity Hall sensor, if low level, illustrate that eedle is current
Position in front half section stroke, namely between 5 ° -180 °, D → B point, then main control module control control main motor reversion, directly
Detect that the output signal of unipolarity Hall sensor generates failing edge, unipolarity Hall sensor exports low electricity to main control module
It is flat, illustrate to reach D point, eedle moves up near supreme needle position or upper needle position, thus completes the process for looking for needle position under present case；
If high level, illustrate the current position of eedle in second half section stroke, namely between 180 ° -355 °, B → C point, then master control
Module control control main motor rotates forward, until main control module detects that the output signal of unipolarity Hall sensor generates decline
Edge becomes low level by high level, illustrates to reach C point, and eedle moves up near supreme needle position or upper needle position, thus completes to work as cause
The process of needle position is looked under condition.
Sewing machine booting is realized by the above method and looks for upper needle position, and eedle does not generate downwards during looking for upper needle position
The stroke walked, to prevent from improving sewing during looking for upper needle position because eedle, which is walked downwards, pricks operative employee, foreign matter phenomena such as
Safety.
Further, the application can also be used to be parked in upper needle position and knit stitch position in sewing process control eedle: sew
Cheng Zhong, main motor rotate forward；When main control module detects that the output signal of unipolarity Hall sensor generates failing edge, by high level
Become low level, main control module control main motor stops operating, then eedle can be made to be parked near needle position or upper needle position；Alternatively,
When main control module detect bipolarity Hall sensor output signal generate failing edge, become low level, master control by high level
Module control main motor stops operating, then eedle can be made to be parked in needle position；When main control module detects bipolarity Hall sensor
Output signal generate rising edge, become high level by low level, main control module control main motor stops operating, then can make eedle
It is parked in knit stitch position.It does not need the component for additionally increasing device, detecting and controlling when can be used to normally stop needle, versatility
By force.In addition, output signal of the main control module according to unipolarity Hall sensor and bipolarity Hall sensor, can determine whether normally to stitch
The position of eedle when threading.
In conclusion the present invention effectively overcomes various shortcoming in the prior art and has high industrial utilization value.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should be covered by the claims of the present invention.
Claims (10)
1. a kind of device for looking for upper needle position for sewing machine booting, it is characterised in that: including turning in sewing machine for driving spindle
Dynamic main motor, all with relatively-stationary first detection sensor of sewing machine case and the second detection sensor and all with master
Axis relatively-stationary first by induction pieces and second by induction pieces, first detection sensor and the second detection sensor all with
The main control module of main motor is connected；The forward rotation direction of main motor, the eedle in sewing machine have from upper when along sewing machine operating
Needle position is displaced downwardly to the front half section stroke of knit stitch position and moves up the second half section stroke of supreme needle position from knit stitch position；When the first detection
Sensor sensing to first by induction pieces and export the first signal when, eedle is within the scope of upper needle position；In the second detection sensing
Device senses that first is exported second signal, senses that the second detection sensor, second is exported the after induction pieces after induction pieces
During three signals, eedle is in the position of front half section stroke；It senses in the second detection sensor second by induction pieces
Export afterwards third signal, sense to the second detection sensor first exported second signal after induction pieces during, eedle
In position in second half section stroke.
2. the apparatus according to claim 1, it is characterised in that: first detection sensor is unipolarity hall sensing
Device, second detection sensor are bipolarity Hall sensor, and described first by induction pieces and second is all magnetic by induction pieces
Steel；First detection sensor and the second detection sensor are arranged side by side along the circumferential direction of a setting circle, the circle of the setting circle
The heart is located on the central axis of the motor shaft of main motor, and described first is all disposed within setting circle by induction pieces by induction pieces and second
Circumference on and be spaced apart in 180 °, described first by induction pieces by the first detection sensor and the second detection sensor sense
It is the polarity for the induction end answered, opposite with the polarity for the induction end that second is incuded by induction pieces by the second detection sensor.
3. the apparatus of claim 2, it is characterised in that: the sewing machine has handwheel, the handwheel and main motor
Motor shaft be coaxially set and rotate synchronously, described first is all fixed on the end of handwheel by induction pieces and second by induction pieces
On face, first detection sensor and the second detection sensor are all mounted on one and stop in needle Hall Plate, and described first is incuded
The induction end of part and second is by the induction end of induction pieces all the first detection sensor of face and the second detection sensor.
4. device according to claim 3, it is characterised in that: the sewing machine has controller housing, the controller
Housing is fixed on sewing machine case, the main control module and stops needle Hall Plate and is all mounted in controller housing.
5. device according to claim 3, it is characterised in that: the needle Hall Plate of stopping is equipped with connecting interface, the connection
Interface connects with main control module.
6. device according to claim 1 or 2, it is characterised in that: when the first detection sensor senses that first is incuded
When part, the first signal of the first detection sensor output is high level；When the first detection sensor incudes less than the first quilt
When induction pieces, first detection sensor exports low level.
7. device according to claim 1 or 2, it is characterised in that: when the first detection sensor senses that first is incuded
When part, the first signal of the first detection sensor output is low level；When the first detection sensor incudes less than the first quilt
When induction pieces, first detection sensor exports high level.
8. device according to claim 1 or 2, it is characterised in that: when the second detection sensor senses that first is incuded
When part, the second signal of the second detection sensor output is low level；When the second detection sensor senses second by induction pieces
When, the third signal of the second detection sensor output is high level.
9. device according to claim 1 or 2, it is characterised in that: when the second detection sensor senses that first is incuded
When part, the second signal of the second detection sensor output is high level；When the second detection sensor senses second by induction pieces
When, the third signal of the second detection sensor output is low level.
10. a kind of method for looking for upper needle position for sewing machine booting, it is characterised in that: using described in any one of claim 1-9
Look for the device of needle position for sewing machine booting, it is described for sewing machine booting look for needle position method the following steps are included:
S1, sewing machine booting, main control module judge whether the output signal of the first detection sensor is the first signal, if so,
Main control module control main motor does not rotate, seam has been waited to instruct；If it is not, then executing following step S2；
S2, main control module judge the output signal of the second detection sensor for second signal or third signal, if the second letter
Number, then execute following step S3；If third signal then executes following step S4；
S3, main control module control main motor reversion, it is main when main control module, which receives the first detection sensor, exports the first signal
Control module control main motor stops operating and seam has been waited to instruct；
S4, main control module control main motor rotate forward, main when main control module, which receives the first detection sensor, exports the first signal
Control module control main motor stops operating and seam has been waited to instruct.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910227349.1A CN109778434A (en) | 2019-03-25 | 2019-03-25 | A kind of device and method for looking for upper needle position for sewing machine booting |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910227349.1A CN109778434A (en) | 2019-03-25 | 2019-03-25 | A kind of device and method for looking for upper needle position for sewing machine booting |
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| CN109778434A true CN109778434A (en) | 2019-05-21 |
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| CN201910227349.1A Pending CN109778434A (en) | 2019-03-25 | 2019-03-25 | A kind of device and method for looking for upper needle position for sewing machine booting |
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| CN113062060A (en) * | 2021-03-30 | 2021-07-02 | 浙江越隆缝制设备有限公司 | Embroidery machine power-off protection method and system |
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