The content of the invention
The object of the present invention is to provide a kind of flat seaming machine automatic shearing that can improve the blocked up ability of automatic shearing money flat seaming machine
Device.
The object of the present invention is achieved like this:A kind of presser foot lifting device for sewing machine, including it is connected with the connecting rod of draw-bar seat
Component, one end of the link assembly are connected to the outer end of the draw-bar seat, and the other end of the link assembly is against there is drive
Dynamic device;The link assembly, which includes at least, has a lift to press connecting rod, and the both ends of lift pressure connecting rod have been separately formed butting section and adjustment part,
Adjustment part side, which is connected with one, can change the adjuster of the draw-bar seat initial angle;The upper surface of the butting section is resisted against institute
State the bottom of the driver.
Preferably, the link assembly further includes a regulating part being arranged between adjustment part and draw-bar seat, regulating part
The side of the draw-bar seat is installed in, the adjuster changes the draw-bar seat initial angle by driving regulating part to rotate
Degree.
Preferably, regulating tank is formed on the draw-bar seat, the regulating part is adapted to the regulating tank and is connected to tune
Save in groove;The side liftable of the adjustment part is provided with the adjuster, and adjuster is resisted against the upper end of the regulating part.
Preferably, the upper end of the adjustment part forms pressure regulation platform, and pressure regulation platform upper end is provided with the adjuster, adjusts
Device bottom is resisted against on the regulating part.
Preferably, the adjuster is a fastener, and nut is provided between adjuster and the pressure regulation platform.
Preferably, the side of the adjustment part forms sliding slot, have locking member A through the sliding slot and with the regulating part
It is fastenedly connected.
Preferably, locked in the adjustment part, regulating part and lift pressure connecting rod by being outside to inside installed with a locking member C successively
Part C is realizing being hinged between adjustment part and regulating part;The locking member C and locking member A is in same level.
Preferably, the butting section forms inclined plane close to the driver side.
Preferably, the bottom of the driver, which is disposed with, adjusts upper prop and adjusts lower prop, adjusts the lower end of upper prop
Portion forms outer stud, and the upper end for adjusting lower prop inwardly forms the internal thread hole being adapted to the outer stud.
Preferably, the bottom for adjusting lower prop forms storage tank, and being rotatably provided with one in storage tank ships and resell on another market, and turns
The bottom of pin is resisted against the upper end of the butting section.
Preferably, driver is electromagnet or cylinder.
Preferably, driver is installed on the sewing machine housing by mounting bracket, and mounting bracket forms both sides up and down
Semicircle linking arm and the side that driver is installed in by fastener.
The present invention is prominent and beneficial compared with prior art to be had the technical effect that:
1. the present invention greatly adds the tune of sewing-machine foot on the basis of sewing machine automatic shearing function is remained
Whole space, 9mm is increased to by traditional at most 5mm, and should be noted the limit of the attainable 9mm of institute herein, is substantially due to stitch
The limit that the shank threaded on machine can be lifted, if this limit can be broken through, structure of the present invention can also be again in theory
Increase the height of pressure foot lifting.
Change 2. the structure of the more existing general sewing machine of the present invention is not made, thus be very beneficial for from general sewing machine
Repack automatic shearing money sewing machine into.Certainly, can also be using the present invention as automatic shearing in future because being changed to existing structure less
The standard configuration of line money sewing machine is introduced to the market, thus structure of the present invention has huge market prospects.
3. utilizing structure of the present invention, when driver gos up, can be promoted along shaft drive axis axial direction,
Driver so as to change transmission causes the phenomenon of uneven wear, greatly improves making for driver after long-term use
Use the service life.
That is 4. structure design of the present invention, can carry out stepless changing by the height of presser feet lifting in theory
It can be adjusted from any number between 1-9mm.So as to according to actual use demand, targetedly by presser feet height
It is adjusted to the numerical value optimized.Structure of the present invention is utilized at the same time, thus it is possible to vary different-thickness is directed in existing sewing machine
Fabric the problem of also distinguishing thin material sewing machine and thick stuff sewing machine, it is possible to achieve the purpose of a tractor serves several purposes, is greatly improved
The versatility of product.
Embodiment one:As shown in figs. 1-7, a kind of presser foot lifting device for sewing machine, including it is connected with the connection rod set of draw-bar seat 3
Part, it is characterised in that:One end of the link assembly is connected to the outer end of the draw-bar seat, the other end of the link assembly
Against there is driver 2;The link assembly include at least have a lift press connecting rod 4, lift pressure connecting rod 4 both ends be separately formed against
Portion 41 and adjustment part 42,42 side of adjustment part, which is connected with one, can change the adjuster 6 of 3 initial angle of draw-bar seat;It is described to support
The upper surface of relying part 41 is resisted against the bottom of the driver 2.
Preferably, the link assembly further includes a regulating part 5 being arranged between adjustment part 42 and draw-bar seat 3, adjusts
Section part 5 is installed in the side of the draw-bar seat 3, and the adjuster 6 changes the draw-bar seat by driving regulating part 5 to rotate
3 initial angles.
Preferably, regulating tank 31 is formed on the draw-bar seat 3, the regulating part 5 is adapted to and blocks with the regulating tank 31
It is connected in regulating tank 31;The side liftable of the adjustment part 42 is provided with the adjuster 6, and adjuster 6 is resisted against the tune
Save the upper end of part 5.
The present invention adjusts the height of presser feet lifting by adjusting the initial angle of the draw-bar seat 3 on sewing machine, utilizes tune
Section part 5 adjusts and reform the angle for becoming draw-bar seat 3, changes the angle of regulating part 5 using lift pressure connecting rod 4, is finally changed using driver 2 and lifted
The angle of connecting rod 4 is pressed, so as to finally realize the angle for changing draw-bar seat 3, have adjusted the height of pressure foot lifting.
The present invention greatly adds the adjustment of sewing-machine foot on the basis of sewing machine automatic shearing function is remained
Space, 9mm is increased to by traditional at most 5mm, and should be noted the limit of the attainable 9mm of institute herein, is substantially due to sew
The limit that shank on machine can be lifted, if this limit can be broken through, structure of the present invention can also be further added by presser feet
The height of lifting.And the structure of the more existing general sewing machine of the present invention is not made and changed, thus it is very beneficial for from common
Sewing machine conversion is into automatic shearing money sewing machine.Certainly, can also be using the present invention as in the future because being changed to existing structure less
The standard configuration of automatic shearing money sewing machine is introduced to the market, thus structure of the present invention has huge market prospects.Together
When in theory can by the height of presser feet lifting carry out stepless changing that is can between 1-9mm any number carry out
Adjustment.So as to which according to actual use demand, presser feet to be targetedly highly adjusted to the numerical value optimized.Utilize this at the same time
The invention structure, thus it is possible to vary the fabric in existing sewing machine for different-thickness will also distinguish thin material sewing machine and thickness is expected
The problem of sewing machine, it is possible to achieve the purpose of a tractor serves several purposes, greatly improves the versatility of product.
In the technical program, the adjuster 6 is that one kind can apply pressure so that regulating part 5 is sent out to regulating part 5
The raw equipment rotated, can be have the function of the cylinder of Telescopic, electromagnet or other there is this equipment.
It may be noted that sewing machine of the present invention, preferably flat seaming machine.Draw-bar seat 3 is equal in various styles flat seaming machine
The part generally used, is a part for belonging to presser foot device in flat seaming machine, by varying after the initial angle for changing part again
The transformation of flat seaming machine presser feet rising height can be realized by rotating a certain angle to it, and this technology is sewing machine industry
Interior common well known professional standard parts, alias are also named:Presser foot lifter crank, presser foot lifter lever crank.Thus herein not to drawing
The operation principle that the installation site and draw-bar seat 3 of pole socket 3 can change presser feet rising height repeats more.More specifically, should
Technology is technology usual in common money flat seaming machine, but because driver uses mostly in existing automatic shearing money flat seaming machine
The mode of solenoid actuated draw-bar seat carries out presser foot lifter, and the stroke of solenoid actuated is fixed, so as to cause again to lead to
Draw-bar seat is crossed to carry out the adjustment of presser feet height.Thus the maximum benefit of the present invention is realized on automatic shearing money flat seaming machine
Adjustment to presser feet maximum rising height.
Preferably, the upper end of the adjustment part 42 forms pressure regulation platform 43, and 43 upper end of pressure regulation platform is provided with the adjusting
Device 6,6 bottom of adjuster are resisted against on the regulating part 5.
The design of pressure regulation platform 43 described in the technical program, the position of an installation is provided to adjuster 6, simultaneously as
It is the molding pressure regulation platform 43 in adjustment part 42, that is to say, that pressure regulation platform 43 and adjustment part 42 are preferably integrally formed, this
Sample can be further ensured that the stability of structure between adjuster 6 and adjustment part 42.The technical program specific description at the same time
Adjuster 6 realizes the operation principle to 5 pressure regulation of regulating part, the acting on regulating part 5 from top to bottom of adjuster 6, so with
Increase or reduction of the adjuster 6 to 5 active force of regulating part can be easily adjusted.
Preferably, the adjuster 6 is a fastener, and nut 61 is provided between adjuster 6 and the pressure regulation platform 43.
The technical program specifically understands a kind of implementation of adjuster 6.Using fastener as the good of adjuster 6
Place is:1st, fastener can freely adjust rotating depth by way of screw thread rotation, so as to change to regulating part
5 pressure, so as to change the angle of draw-bar seat 3;And in routine use, it might even be possible to adjuster 6 is rotated manually
So as to change the height of presser feet lifting;2nd, fastener is standard component in itself, of low cost;3rd, can during screw thread rotation
There is provided stronger coupling mechanism force, the use of the grade standard component of attaching nut 61, can allow connection between adjuster 6 and adjustment part 42 more
Add stabilization.
Preferably, the side of the adjustment part 42 forms sliding slot 44, have locking member A7 through the sliding slot 44 and with institute
Regulating part 5 is stated to be fastenedly connected.
The technical program specifically understands a kind of mode for the stability for increasing and being connected between adjustment part 42 and regulating part 5
A kind of and angle adjustment mode.That is, allow locking member A7 through sliding slot 44 and be fastenedly connected with regulating part 5, thus
Can be when driver 2 bounce back, draw-bar seat 3 can be rotated to setting position, at this time the opposite position between adjustment part 42 and regulating part 5
The relation of putting would not rely solely on regulating part 5 and the thrust of adjuster 6 is resetted.And the design of sliding slot 44, it can allow adjuster 6
During work, adjuster 6 applies pressure to the one end of regulating part 5, and then that one end of regulating part 5 will decline, and be inconjunction with locking
Part A7 also can and then decline, that is to say, that locking member A7 can be slided in sliding slot 44 at this time, and lift the adjustment in pressure connecting rod 4 at this time
Portion 42 avoids the need for changing the angle of setting.
Because in actual production, lift pressure connecting rod 4 is often integrally formed metalwork, that is to say, that adjustment part 42 and is supported
Angle between relying part 41 is relatively-stationary, if the angle of adjustment part 42 changes, may result in the angle of butting section 41
Degree changes.Particularly when driver 2 is using solenoid actuated, because electromagnet stroke is fixed, drive may result in
Dynamic device 2 shortens the EFFECTIVE RANGE of lift pressure connecting rod 4, when thus influencing product.Because 41 angle of butting section
Change can also influence the service life of driver 2.
And preferably, the sliding slot 44 described in the technical program is a kind of sliding slot 44 of strip, locking member A7 can be in cunning
Slided in groove 44.
Preferably, by being outside to inside installed with a locking member C8 successively in the adjustment part 42, regulating part 5 and lift pressure connecting rod 4,
Locking member C8 is realizing being hinged between adjustment part 42 and regulating part 5;The locking member C8 and locking member A7 is in same level
On face.
The technical program specifically understands mode hinged between a kind of adjustment part 42 and regulating part 5.Preferably, lock
Part C8 is a fastener, when the such driving of driver 2 lift pressure connecting rod 4 moves, using the fastening effect of fastener, may be used also
Rotated with allowing lift pressure connecting rod 4 to directly drive draw-bar seat 3.In adjustment part 42 and regulating part 5 should be at this time through hole and non-threaded holes,
The aperture of the through hole is advisable with not influencing adjustment part 42 and the rotation of regulating part 5, is threaded hole in draw-bar seat 3.And the locking
Part C8 and locking member A7 in same level in same level, compared to tilting or
Preferably, the butting section 41 forms inclined plane 45 close to 2 side of driver.
The design of inclined plane 45, can possess longer distance in identical space, can utilize this segment distance, drive
Dynamic device 2 can ensure to allow driver 2 to abut against all the time in portion 41 when driving downwards, be not in driver 2 skid off against
The situation in portion 41, it is preferable that after calculating, when the driving downwards of driver 2 reaches capacity position, butting section 41 should be in water
Placing flat.And can ensure when driver 2 bounces back, butting section 41 is along 2 axis of driver all the time to the power of driver 2
Line direction, so that the driver 2 for changing transmission is after long-term use, causes the phenomenon of uneven wear, greatly improves drive
The service life of dynamic device 2.
Preferably, the bottom of the driver 2, which is disposed with, adjusts upper prop 21 and adjusts lower prop 22, adjusts upper prop 21
Bottom form outer stud 23, the upper end for adjusting lower prop 22 inwardly forms the internal thread being adapted to the outer stud 23
Hole 24.
The technical program specifically understands how driver 2 abuts against portion 41.And the benefit so designed
It is to adjust the distance that can be adjusted between upper prop 21 and adjusting lower prop 22 by screw thread rotation between the two, adds the suitable of product
Answer degree.Particularly when driver 2 is electromagnet, because the stroke of electromagnet in itself is fixed, this side can be borrowed
Formula is adjusted.It can be used for the scope of increase presser feet adjustment from another angle.
Preferably, the bottom for adjusting lower prop 22 forms storage tank 25, and one is rotatably provided with storage tank 25
Ship and resell on another market 26,26 bottom of shipping and reselling on another market is resisted against the upper end of the butting section 41.
26 design of shipping and reselling on another market can reduce and adjust frictional force of the lower prop 22 with butting section 41 when contacting, and reduce to driver
2 abrasion.
Preferably, driver 2 is electromagnet or cylinder.Electromagnet is the existing most common driving of flat seaming machine automatic shearing money
Device 2, cylinder can adjust collapsing length, can be used for the adjusting range of increase presser feet.
Preferably, driver 2 is installed on the sewing machine housing 1 by mounting bracket 9, mounting bracket about 9 both sides into
Type has semicircle linking arm 91 and the side of driver 2 is installed in by fastener.
The technical program specifically discloses a kind of mounting means of driver 2, and the design of semicircle linking arm 91 is saving
About cost while maintain the stability of script, be preferably fixed form.
Operation principle:The present invention adjusts the height of presser feet lifting by adjusting the angle of the draw-bar seat 3 on sewing machine, profit
The angle for becoming draw-bar seat 3 is adjust and reform with regulating part 5, changes the angle of regulating part 5 using lift pressure connecting rod 4, is finally changed using driver 2
Become the angle of lift pressure connecting rod 4, so as to finally realize the angle for changing draw-bar seat 3, have adjusted the height of pressure foot lifting.
Above-described embodiment is only presently preferred embodiments of the present invention, is not limited the scope of the invention according to this, therefore:It is all according to
The equivalence changes that structure, shape, the principle of the present invention is done, should all be covered by within protection scope of the present invention.