CN109825961A - Laborsaving knee leans on device, sewing machine and presser foot lifter method - Google Patents
Laborsaving knee leans on device, sewing machine and presser foot lifter method Download PDFInfo
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- CN109825961A CN109825961A CN201910233015.5A CN201910233015A CN109825961A CN 109825961 A CN109825961 A CN 109825961A CN 201910233015 A CN201910233015 A CN 201910233015A CN 109825961 A CN109825961 A CN 109825961A
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- knee
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Abstract
The present invention relates to technical field of sewing machines more particularly to a kind of laborsaving knee by device, including the laborsaving knee by the sewing machine and presser foot lifter method of device.The laborsaving knee by device includes controller, for driving foot lifting mechanism to lift the knee of presser foot component provides the presser feet spring of pressing force and the driving mechanism of the decrement for adjusting presser feet spring by mechanism, for detecting knee by the sensor of the change in location of mechanism, for presser foot component, sensor and driving mechanism are connected with controller, and controller controls driving mechanism according to the detection signal of sensor and acts.The presser foot lifter method is, when manually manipulation knee leans on mechanism action and foot lifting mechanism is driven to lift presser foot component, sensor detection knee, which leans on the change in location of mechanism and will test signal, is conveyed to controller, controller receives detection signal and according to detection signal output action instruction, and driving mechanism receives and responds to action command and adjusts the decrement for reducing presser feet spring.Labor-saving effect can be reached when manipulating presser foot lifter.
Description
Technical field
It includes that the laborsaving knee leans on that the present invention relates to technical field of sewing machines more particularly to a kind of laborsaving knee by device, one kind
The sewing machine of device and a kind of presser foot lifter method.
Background technique
Currently, most of flat seam machines realize presser foot lifter function by device using knee, in some thick material flat seam machines, due to
Sewing is blocked up, and presser feet spring is needed to provide biggish pressing force for presser foot component, can just be normally carried out work feed function, thus cause
Knee needs to overcome the biggish pressing force of presser feet spring that could lift completely presser foot component during presser foot lifter by device, so that
The labor intensity and operation difficulty of operator is larger.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of laborsaving knee by device, it is a kind of including the laborsaving knee by device
Sewing machine and a kind of presser foot lifter method can reduce the active force for needing to impose when operator manipulates presser foot lifter, existing to overcome
The drawbacks described above of technology.
In order to solve the above-mentioned technical problem, the present invention adopts the following technical scheme: a kind of laborsaving knee leans on device, including control
Device, the knee for driving foot lifting mechanism to lift presser foot component lean on mechanism, for detecting knee by the sensing of the change in location of mechanism
The driving mechanism of device, the presser feet spring that pressing force is provided for presser foot component and the decrement for adjusting presser feet spring, sensor
It is connected with controller with driving mechanism, controller controls driving mechanism according to the detection signal of sensor and acts.
Preferably, driving mechanism includes force piece, and force piece has rotation axis, and rotation axis passes through transmission component and presser feet bullet
Spring is connected and provides axial compressive force for presser feet spring.
Preferably, transmission component includes crank, connecting rod and slide bar, and one end of crank is fixedly arranged on rotation axis, and the other end with
One end of connecting rod is hinged, and the other end and the slide bar of connecting rod are hinged, and slide bar is connected with presser feet spring.
Preferably, transmission component includes crank and slide bar, and one end of crank is fixedly arranged on rotation axis, and the other end is equipped with and slides
Slot, slide bar are equipped with sliding block, and sliding block is in sliding fit with the sliding chute, and slide bar is connected with presser feet spring.
Preferably, transmission component includes shaft coupling and screw rod, and one end of screw rod is connected by shaft coupling with rotation axis, and
The other end is connected with presser feet spring.
Preferably, force piece is servo motor or stepper motor.
Preferably, driving mechanism includes force piece, and force piece has straight line output shaft, straight line output shaft and presser feet spring phase
It connects and provides axial compressive force for presser feet spring.
Preferably, force piece is linear motor or telescopic rod.
The present invention also provides a kind of sewing machines, including laborsaving knee as described above leans on device.
The present invention also provides a kind of presser foot lifter methods, when manually manipulation knee by mechanism action and drives foot lifting mechanism to lift
When presser foot component, sensor detection knee, which leans on the change in location of mechanism and will test signal, is conveyed to controller, and controller receives inspection
It surveys signal and is instructed according to detection signal output action, driving mechanism receives and responds to action command and adjusts reduction presser feet spring
Decrement.
Compared with prior art, the present invention has significant progress:
Active force is imposed by mechanism to knee in operator, make knee by mechanism action and foot lifting mechanism is driven to lift presser feet group
During part, when sensor detects that knee leans on the change in location of mechanism, by controller according to the detection signal control of sensor
Driving mechanism movement processed, makes driving mechanism adjust the decrement for reducing presser feet spring, reaches unloading or reduces the effect of presser feet spring
In the purpose of the pressing force of presser foot component, that is, reduces the pressing force for the presser feet spring that knee needs to overcome by mechanism, reach labour-saving
Effect, so that operator need to only provide lesser active force and can complete presser foot lifter movement, thus when using operator more
It is laborsaving, more humanized, working efficiency is also higher, and does not change the original manipulation presser foot lifter movement of operator, do not generate additional
Operation, be not necessarily to any learning cost.
Detailed description of the invention
Fig. 1 is that the laborsaving knee of the embodiment of the present invention leans on the structural schematic diagram of device.
Fig. 2 is that the laborsaving knee of the embodiment of the present invention is illustrated by the separate structure of the first embodiment of device driving mechanism
Figure.
Fig. 3 is that the laborsaving knee of the embodiment of the present invention is illustrated by the separate structure of second of embodiment of device driving mechanism
Figure.
Fig. 4 is that the laborsaving knee of the embodiment of the present invention is illustrated by the separate structure of the third embodiment of device driving mechanism
Figure.
Fig. 5 is that the laborsaving knee of the embodiment of the present invention is illustrated by the separate structure of the 4th kind of embodiment of device driving mechanism
Figure.
Wherein, the reference numerals are as follows:
11, knee leans on disk 12, control stick
13, knee control axis 14, two-way crank
21, mandril 22, rear lever
23, pull rod 24, preceding lever
31, presser foot component 32, presser feet axis
41, presser feet spring 42, adjusting guide rod
51,51 ', force piece 511, rotation axis
512, straight line output shaft 52,52 ', crank
521, sliding slot 53, connecting rod
54, slide bar 55, sliding block
56, axial screw 57, shaft coupling
58, screw rod
Specific embodiment
Specific embodiments of the present invention will be described in further detail with reference to the accompanying drawing.These embodiments are only used for
Illustrate the present invention, and not limitation of the present invention.
In the description of the present invention, it should be noted that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark
Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair
Limitation of the invention.In addition, term " first ", " second " are used for description purposes only, it is not understood to indicate or imply opposite
Importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood as the case may be
Concrete meaning in the present invention.
In addition, in the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or more.
As shown in Figures 1 to 5, the laborsaving knee of the present invention leans on a kind of embodiment of device.The laborsaving knee of the present embodiment leans on device
For driving the foot lifting mechanism of sewing machine to lift presser foot component 31, presser foot lifter movement is realized.
Referring to Fig. 1, the laborsaving knee of the present embodiment includes knee by mechanism, presser feet spring 41, driving mechanism, sensor by device
And controller, sensor and controller are being not shown in the figure.
Wherein, knee can be acted by mechanism under the active force that operator applies, and foot lifting mechanism is driven to execute lift pressure
Foot-propelled is made, and presser foot component 31 is lifted.Knee can lean on machine using knee conventional in the prior art by mechanism and foot lifting mechanism
Structure and foot lifting mechanism.
For example, knee may include knee by disk 11, control stick 12, knee control axis 13 and two-way crank 14 by mechanism, knee leans on disk 11
It is abutted against for operator's knee, one end of control stick 12 is connected with knee by disk 11, the other end and the knee control axis 13 of control stick 12
One end is connected, and two-way crank 14 is fixedly arranged on the other end of knee control axis 13, and one end of two-way crank 14 acts on foot lifting mechanism.
When operator's knee acts against knee on disk 11, control stick 12 can be pushed to rotate, so that knee control axis 13 is driven to rotate, it is double
It is rotated with it to crank 14, and foot lifting mechanism is driven to act, realize presser foot lifter.
Foot lifting mechanism may include mandril 21, rear lever 22, pull rod 23 and preceding lever 24, the bottom end of mandril 21 with it is two-way
One end of crank 14 abuts against, and the top of mandril 21 is hinged with rear lever 22, and one end of rear lever 22 and pull rod 23 is hinged,
The other end of pull rod 23 is hinged with preceding lever 24, and preceding lever 24 is hinged with presser feet axis 32, and presser foot component 31 is set to presser feet axis
32 lower end.When two-way crank 14 rotates, mandril 21 can be pushed to move upwards, and pass through mandril 21, rear lever 22, drawing
The transmission of bar 23 and preceding lever 24, driving presser feet axis 32 move upwards, and presser foot component 31 is lifted therewith moving, and realizes presser foot lifter
Movement.
Presser feet spring 41 is that presser foot component 31 provides pressing force, and presser feet spring 41 can be set to the upper end of presser feet axis 32, and
Presser feet spring 41 is arranged along the vertical direction with presser feet axis 32, and presser feet spring 41 has decrement and connects with 32 pressure of presser feet axis
Touching, to provide downward pressing force for presser foot component 31.In knee control mechanism action and foot lifting mechanism is driven to execute presser foot lifter
When movement, need the pressing force for overcoming presser feet spring 41 that could lift completely presser foot component 31.
Driving mechanism is connected with presser feet spring 41, for adjusting the decrement of presser feet spring 41, that is, adjusts presser feet spring
41 act on the size of the pressing force of presser feet axis 32 and presser foot component 31.Controller is connected with driving mechanism, by controller control
Driving mechanism movement processed, may be implemented the decrement of automatic adjustment presser feet spring 41.Preferably, tune is arranged in presser feet spring 41
Save guide rod 42, the upper end for adjusting guide rod 42 can be connected with driving mechanism (referring to fig. 2 to Fig. 5), can by adjusting guide rod 42
Guiding role is played with the dilatation to presser feet spring 41, guarantees that presser feet spring 41 is axially retractable.
Sensor is used to detect the change in location that knee leans on mechanism, and sensor is connected with controller, when knee leans on mechanism action
When, sensor is able to detect that knee leans on the change in location of mechanism, and will test signal and be conveyed to controller, and controller receives sensing
The detection signal of device output, and driving mechanism movement is controlled according to the detection signal.The form of sensor and setting position are not
Limitation, as long as can be realized movement and change in location that induction detection knee leans on mechanism.For example, sensor can be that can examine
Knee is surveyed by the control stick 12 or knee control axis 13 of mechanism or the sensor of the rotational angle of two-way crank 14, or to be able to detect knee
By the sensor of the displacement of disk 11.Controller can then judge position or work of the knee by mechanism according to the testing result of sensor
For knee by the size of the power of disk 11, to control the movement range of driving mechanism, i.e. the decrement of control presser feet spring 41 is big
It is small.
The laborsaving knee of the present embodiment leans on device as a result, imposes active force by mechanism to knee in operator, keeps knee dynamic by mechanism
During making and foot lifting mechanism being driven to lift presser foot component 31, when sensor detects that knee leans on the change in location of mechanism,
Controller can control driving mechanism movement according to the detection signal of sensor, and driving mechanism is made to adjust the pressure for reducing presser feet spring 41
Contracting amount achievees the purpose that unloading or reduces the pressing force that presser feet spring 41 acts on presser foot component 31, i.e. reduction knee is needed by mechanism
The pressing force for the presser feet spring 41 to be overcome reaches labour-saving effect, so that operator need to only provide lesser active force energy
Complete presser foot lifter movement, thus it is more laborsaving when using operator, more humanized, working efficiency is also higher, and do not change
The original manipulation presser foot lifter movement of operator, does not generate additional operation, is not necessarily to any learning cost.
In the present embodiment, the form of controller is not limited to, such as can be PLC controller or single-chip microcontroller, it is preferable that control
Device processed can be the master controller of sewing machine.
In the present embodiment, the form of driving mechanism is not limited to, as long as can act on presser feet spring 41, and adjustable pressure
The decrement of foot spring 41.
It referring to fig. 2, is the first preferable embodiment of driving mechanism.In the first preferable embodiment, driving
Mechanism includes force piece 51, and force piece 51 has rotation axis 511, and rotation axis 511 is connected by transmission component with presser feet spring 41
It connects and is that presser feet spring 41 provides axial compressive force, so that presser feet spring 41 is that presser foot component 31 provides compression with decrement
Power.Force piece 51 is connected with controller, controls 511 turns of 51 rotation axis of force piece according to the detection signal of sensor by controller
It is dynamic, presser feet spring 41 can be driven flexible by the transmission of transmission component, to adjust the decrement of presser feet spring 41.
In the first above-mentioned preferable embodiment, it is preferable that transmission component may include crank 52, connecting rod 53 and slide
Bar 54, one end of crank 52 are fixedly arranged on the rotation axis 511 of force piece 51, and the other end of crank 52 is mutually cut with scissors with one end of connecting rod 53
It connects, the other end and the slide bar 54 of connecting rod 53 are hinged, and slide bar 54 is connected with presser feet spring 41 and is pressed in presser feet spring 41
Upper end provides axial compressive force for presser feet spring 41.When the rotation axis 511 of force piece 51 rotates, crank 52 is rotated with it, and is driven
Connecting rod 53 moves, and driving slider 54 moves up and down, to drive presser feet spring 41 flexible.
In the first above-mentioned preferable embodiment, it is preferable that force piece 51 can be servo motor or stepper motor.
It is second of driving mechanism preferable embodiment referring to Fig. 3.Second of preferable embodiment and above-mentioned first
The preferable embodiment of kind is essentially identical, and something in common repeats no more, the difference is that the structure of transmission component.At second
In preferable embodiment, it is preferable that transmission component includes crank 52 ' and slide bar 54, and one end of crank 52 ' is fixedly arranged on force piece
51 rotation axis 511, the other end of crank 52 ' are equipped with sliding slot 521, and slide bar 54 is equipped with sliding block 55, and sliding block 55 can pass through axis
Position screw 56 is connected with slide bar 54, and sliding block 55 is slidably matched with sliding slot 521, and slide bar 54 is connected and compresses with presser feet spring 41
In the upper end of presser feet spring 41, axial compressive force is provided for presser feet spring 41.When the rotation axis 511 of force piece 51 rotates, crank
52 rotate with it, and band movable slider 55 moves up and down and slides in sliding slot 521 simultaneously, to realize that about 54 driving slider is transported
It is dynamic, drive presser feet spring 41 flexible.
It referring to fig. 4, is the third preferable embodiment of driving mechanism.The third preferable embodiment and above-mentioned first
The preferable embodiment of kind is essentially identical, and something in common repeats no more, the difference is that the structure of transmission component.At the third
In preferable embodiment, it is preferable that transmission component includes shaft coupling 57 and screw rod 58, and one end of screw rod 58 passes through shaft coupling 57
It is connected with the rotation axis 511 of force piece 51, the other end of screw rod 58 is connected with presser feet spring 41 and is pressed in presser feet spring
41 upper end provides axial compressive force for presser feet spring 41.It is threadedly engaged between screw rod 58 and shaft coupling 57, when turning for force piece 51
When moving axis 511 rotates, screw rod 58 can be driven to move up and down, drive presser feet spring 41 flexible, to adjust presser feet spring 41
Decrement.
It is the 4th kind of preferable embodiment of driving mechanism referring to Fig. 5.In the 4th kind of preferable embodiment, driving
Mechanism includes force piece 51 ', and force piece 51 ' has straight line output shaft 512, the straight line output shaft 512 and presser feet bullet of force piece 51 '
Spring 41 is connected and is pressed in the upper end of presser feet spring 41, provides axial compressive force for presser feet spring 41, so that presser feet spring 41 has
There is decrement and is that presser foot component 31 provides pressing force.Force piece 51 ' is connected with controller, by controller according to sensor
The straight line output shaft 512 of detection signal control force piece 51 ' moves up and down, and presser feet spring 41 can be driven flexible, to adjust
The decrement of presser feet spring 41.
In above-mentioned 4th kind preferable embodiment, force piece 51 ' can be linear motor, and force piece 51 ' can also be with
Form for telescopic rod, telescopic rod is not limited to, such as cylinder or hydraulic cylinder or electric pushrod, it is preferable that force piece 51 ' can be adopted
Use cylinder.When force piece 51 ' is cylinder, cylinder can be connected by pipeline with gas source, and throttle valve is arranged on pipeline, be controlled
Device is connected with throttle valve, controls throttle valve according to the detection signal of sensor by controller and opens or closes, and controls throttling
The opening size of valve, can control the displacement of Telescopic-cylinder end (straight line output shaft 512), to control the compression of presser feet spring 41
Measure size.
It should be noted that the driving mechanism of the present embodiment is not limited to above-mentioned four kinds of embodiments.
Device is leaned on based on above-mentioned laborsaving knee, the present embodiment also provides a kind of sewing machine, and the sewing machine of the present embodiment includes this
The above-mentioned laborsaving knee of embodiment leans on device.
The embodiment of the present invention also provides a kind of presser foot lifter method, the presser foot lifter method are as follows: when manually manipulation knee is dynamic by mechanism
When making and foot lifting mechanism being driven to lift presser foot component 31, sensor detection knee by mechanism change in location and to will test signal defeated
Controller is given, controller receives detection signal and according to detection signal output action instruction, and driving mechanism receives and responds to
Action command adjusts the decrement for reducing presser feet spring 41.
Specifically, active force is imposed by mechanism to knee in operator, make knee by mechanism action and foot lifting mechanism is driven to lift
During playing presser foot component 31, when sensor detects that knee leans on the change in location of mechanism, controller can be according to sensor
Signal control driving mechanism movement is detected, so that driving mechanism is adjusted the decrement for reducing presser feet spring 41, reaches unloading or reduction
Presser feet spring 41 acts on the purpose of the pressing force of presser foot component 31, that is, reduces the presser feet spring 41 that knee leans on mechanism to need to overcome
Pressing force reaches labour-saving effect, so that operator need to only provide lesser active force and can complete presser foot lifter movement, to make
Operator is more laborsaving, more humanized when using, working efficiency is also higher, and does not change the original manipulation presser foot lifter of operator
Movement, does not generate additional operation, is not necessarily to any learning cost.
The presser foot lifter method of the present embodiment can above-mentioned laborsaving knee through this embodiment realized by device.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and replacement can also be made, these are improved and replacement
Also it should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of laborsaving knee leans on device, which is characterized in that including controller, for driving foot lifting mechanism to lift presser foot component
(31) knee is provided by mechanism, for detecting the knee by the sensor of the change in location of mechanism, for the presser foot component (31)
The driving mechanism of the presser feet spring (41) of pressing force and the decrement for adjusting the presser feet spring (41), the sensor and
The driving mechanism is connected with the controller, and the controller controls the drive according to the detection signal of the sensor
Dynamic mechanism action.
2. laborsaving knee according to claim 1 leans on device, which is characterized in that the driving mechanism includes force piece (51),
The force piece (51) has rotation axis (511), and the rotation axis (511) passes through transmission component and presser feet spring (41) phase
It connects and is that the presser feet spring (41) provides axial compressive force.
3. laborsaving knee according to claim 2 leans on device, which is characterized in that the transmission component includes crank (52), connects
One end of bar (53) and slide bar (54), the crank (52) is fixedly arranged on the rotation axis (511), and the other end and the connecting rod
(53) one end is hinged, and the other end and the slide bar (54) of the connecting rod (53) are hinged, the slide bar (54) with it is described
Presser feet spring (41) is connected.
4. laborsaving knee according to claim 2 lean on device, which is characterized in that the transmission component include crank (52 ') and
Slide bar (54), one end of the crank (52 ') are fixedly arranged on the rotation axis (511), and the other end is equipped with sliding slot (521), described
Slide bar (54) is equipped with sliding block (55), and the sliding block (55) is slidably matched with the sliding slot (521), the slide bar (54) with it is described
Presser feet spring (41) is connected.
5. laborsaving knee according to claim 2 lean on device, which is characterized in that the transmission component include shaft coupling (57) and
One end of screw rod (58), the screw rod (58) is connected by the shaft coupling (57) with the rotation axis (511), and the other end
It is connected with the presser feet spring (41).
6. laborsaving knee according to claim 2 leans on device, which is characterized in that the force piece (51) is servo motor or step
Into motor.
7. laborsaving knee according to claim 1 leans on device, which is characterized in that the driving mechanism includes force piece (51 '),
The force piece (51 ') has straight line output shaft (512), and the straight line output shaft (512) is connected with the presser feet spring (41)
It connects and is that the presser feet spring (41) provides axial compressive force.
8. laborsaving knee according to claim 7 lean on device, which is characterized in that the force piece (51 ') be linear motor or
Telescopic rod.
9. a kind of sewing machine, which is characterized in that lean on device including laborsaving knee such as described in any item of the claim 1 to 8.
10. a kind of presser foot lifter method, which is characterized in that when manually manipulation knee by mechanism action and drives foot lifting mechanism to lift pressure
When foot component, sensor detection knee, which leans on the change in location of mechanism and will test signal, is conveyed to controller, and the controller receives
The detection signal is simultaneously instructed according to the detection signal output action, and driving mechanism receives and responds to the action command tune
Reduce the decrement of small presser feet spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910233015.5A CN109825961A (en) | 2019-03-26 | 2019-03-26 | Laborsaving knee leans on device, sewing machine and presser foot lifter method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910233015.5A CN109825961A (en) | 2019-03-26 | 2019-03-26 | Laborsaving knee leans on device, sewing machine and presser foot lifter method |
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| CN109825961A true CN109825961A (en) | 2019-05-31 |
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ID=66872234
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|---|---|---|---|
| CN201910233015.5A Pending CN109825961A (en) | 2019-03-26 | 2019-03-26 | Laborsaving knee leans on device, sewing machine and presser foot lifter method |
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| CN (1) | CN109825961A (en) |
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|---|---|---|---|---|
| CN110195296A (en) * | 2019-07-11 | 2019-09-03 | 阮健明 | A kind of trimming and foot lifting mechanism of sewing machine |
| WO2022156041A1 (en) * | 2021-01-21 | 2022-07-28 | 浙江沪龙科技股份有限公司 | Control method for avoiding, during mechanical linkage, fabric movement caused by lifting and lowering presser foot |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110195296B (en) * | 2019-07-11 | 2023-12-22 | 阮健明 | Thread cutting and presser foot lifting mechanism of sewing machine |
| WO2022156041A1 (en) * | 2021-01-21 | 2022-07-28 | 浙江沪龙科技股份有限公司 | Control method for avoiding, during mechanical linkage, fabric movement caused by lifting and lowering presser foot |
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Application publication date: 20190531 |