A kind of automatic shearing separator of sewing machine cutting knife
Technical field
The invention belongs to sewing machine manufacturing technology field, is related to a kind of automatic shearing separator of sewing machine cutting knife.
Background technology
Sewing machine is with one or more sewing thread, and one or more stitchings are formed on sewing, make one or more layers seam
The machine that material interweaves or united by a seam.Sewing machine includes side cutter sewing machine, is in the same of sewing the characteristics of the cutter sewing machine of side
When selvedge also cut by cutting knife it is neat.
Existing sewing machine, such as Chinese patent literature data disclose the side cutter sewing machine of tool cutting knife clutch
[application number:201420553767.2;Authorization Notice No.:CN204125714U], it includes head, and the operating side of head forms machine
Head cavity, the end face at handpiece operation end connect panel, are provided with roll setting spanner, cutter lifting spanner on panel, pass through cutter lifting spanner band
The bar portion of dynamic cutter lifting crank assemblies laterally pulls the afterbody of driving lever, and driving lever drives on-of pin transverse movement, by on-of pin from sliding block
Hole in depart from, cutting knife clutch is entered released state, now cutting knife can not work, pass through roll setting spanner drive roll setting plate
The turn of bilge of component is pressed downward, and the turn of bilge of roll setting board component drives the boss of knife bar seat to overcome the resistance of knife bar spring to move downward,
For knife bar seat during moving downward, the elbow of division board plate stirs the handle of division board, makes the isolation part of division board from dialling
Spun off between bar and crank, when knife bar seat, which moves to its boss, touches crank, driving lever spring promotes driving lever to rotate, and dials
Bar drives on-of pin counter motion, on-of pin is entered in the hole of sliding block, cutting knife clutch is entered connection status, now cut
Knife can work.
The side cutter sewing machine of the tool cutting knife clutch of this kind of structure, be manually pull roll setting spanner, cutter lifting is pulled
Hand, blank work and the homing of cutting knife of cutting knife are realized, is to need operator manually operated, switching is cumbersome, and operation is slow
Slowly, efficiency is low;And the side cutter sewing machine of the tool cutting knife clutch of this kind of structure by roll setting spanner, cutter lifting in order to be pulled
Hand realizes the purpose of trimming, and substantial amounts of transmission, the parts of connection are mounted with the cavity of head, complicated, and adapts to
Property is low.
The content of the invention
The purpose of the present invention is to be directed to the above-mentioned problems in the prior art, it is proposed that a kind of sewing machine cutting knife it is automatic
Separator is sheared, solves how to make the automaticity of existing cutter sewing machine high.
The purpose of the present invention can be realized by following technical proposal:A kind of automatic shearing separation dress of sewing machine cutting knife
Put, sewing machine includes head and cutting knife, and the head front end face is fixed with panel, and slitter shaft is provided with the head, described to cut
Cutter spacing is in the bottom of slitter shaft, it is characterised in that the automatic shearing separator includes embedded cylinder and separation cylinder, described
Embedded cylinder is located at the top of head, and the separation cylinder is connected on panel, is fixed with the piston rod of the separation cylinder
Spanner is resetted, driving lever and spring one are provided with the head, leading truck is fixed with outside the slitter shaft, has on the leading truck
Embedded groove, the cutting knife outer shaft sleeve have spring two, and described one end of spring two is resisted against on leading truck, and the other end is resisted against head
Bottom, when embedded cylinder moves down slitter shaft, the driving lever can be embedded into embedded groove in the presence of the elastic force of spring one
In, the separation cylinder can make driving lever overcome the elastic force of spring one to leave embedded groove by resetting spanner.
Embedded cylinder operation moves down slitter shaft, cutting knife and leading truck, and leading truck compression spring two, leading truck, which drops to, to be set
Fixed height, driving lever are embedded into embedded groove in the presence of the elastic force of spring one, and now cutting knife enters working condition, shear surface
Material, when completing to shear fabric, cylinder operation is separated, makes driving lever overcome the elastic force of spring one to leave insertion by resetting spanner
Groove, slitter shaft, cutting knife and leading truck homing in the presence of the elastic force of spring two, now cutting knife enter holding state, i.e.,
Cutting knife no longer shears fabric, and this sewing machine realizes that the automatic shearing of cutting knife separates by embedded cylinder, separation cylinder and spring two,
Automaticity is high, and parts are less, simple in construction, easy to assembly.
In a kind of automatic shearing separator of above-mentioned sewing machine cutting knife, main shaft and swing are provided with the head
Axle, the main shaft are connected by cam with one end of swinging axle, and the driving lever is hinged on the other end of swinging axle.Main shaft can pass through
Cam, swinging axle drive driving lever to swing up and down, i.e., after driving lever is embedded into embedded groove, swinging up and down for driving lever can band action-oriented
Frame and the cutting knife being fixed on slitter shaft move up and down, so that the hard alloy side of cutting knife and needle plate is meshed and realizes automatic shearing
The purpose of section material, simple in construction, automaticity is high.
In a kind of automatic shearing separator of above-mentioned sewing machine cutting knife, the spring one is torsion spring, the spring
One and driving lever be coaxially disposed.The rotation mode of torsion spring and driving lever mutually agrees with, torsion spring make driving lever all the time have be embedded into embedded groove
Trend, torsion spring elasticity effect is good, and reasonable utilization space.
In a kind of automatic shearing separator of above-mentioned sewing machine cutting knife, the embedded groove is located at leading truck close to face
The side of plate, the driving lever is between slitter shaft and panel.Spring one and driving lever are between slitter shaft and panel, i.e. spring
One and driving lever prevent take up the space of slitter shaft opposite side, reasonable utilization space.
In a kind of automatic shearing separator of above-mentioned sewing machine cutting knife, the driving lever is positioned at reset spanner and panel
Between.For driving lever relative to the other end of hinged end positioned at resetting between spanner and panel, that is, the piston rod contraction for separating cylinder is logical
Cross reset spanner and pull driving lever, what reset spanner can be more prone to makes driving lever overcome the elastic force of spring one to be separated from embedded groove,
Automaticity is high, reasonable utilization space.
In a kind of automatic shearing separator of above-mentioned sewing machine cutting knife, on-of pin, institute are fixed with the driving lever
Stating on-of pin can be embedded into embedded groove.Driving lever is in strip, and the central axis of on-of pin and the central axis of driving lever are perpendicular,
What the setting of on-of pin can make that driving lever and spring one set is overall embedding closer to panel, reasonable utilization space, and on-of pin
Enter into embedded groove, contact area is big, and stability is good, main shaft is being driven the stabilization that moves up and down of cutting knife well, shear effect
It is good.
In a kind of automatic shearing separator of above-mentioned sewing machine cutting knife, the lower section of the leading truck embedded groove has
Smooth abutment face.Abut against on face, support in the presence of the elastic force of spring one when on-of pin is not embedded into embedded groove
Smooth, smooth by face, on-of pin slides smooth on abutment face.
In a kind of automatic shearing separator of above-mentioned sewing machine cutting knife, there is installation cavity in the panel, it is described
Driving lever and spring one are located in installation cavity, and the reset wrench portion is located in installation cavity.The volume of cavity is certain in head
, the setting of automatic shearing separator parts must need to occupy certain space, by outputing installation cavity in the panel
It is first-class for installing driving lever and spring, make the installation site of other parts in existing head of sewing machine not have to change, installation
It is convenient, it is reasonable in design.
In a kind of automatic shearing separator of above-mentioned sewing machine cutting knife, one is extended upward at the top of the panel
Installing plate, the embedded cylinder are connected on a mounting board.Installing plate makes the firmness for being embedded in cylinder installation high as carrier, i.e.,
This automatic shearing separator, which is arranged on, only needs the structure for changing panel, strong adaptability when in existing sewing machine.
In a kind of automatic shearing separator of above-mentioned sewing machine cutting knife, the outer end of the embedded cylinder piston rod
Screw thread is fixed with adjusting nut, and there is diameter to be more than the blind of embedded cylinder piston rod outer end diameter at the top of the slitter shaft
Hole, and the diameter of blind hole is less than the external diameter of adjusting nut.Embedded cylinder piston rod stretches out, and the outer end of piston rod extend into blind hole
In, blind hole plays a part of guiding, and adjusting nut is resisted against the top of slitter shaft, so as to drive slitter shaft to move down, passes through regulation
The position of adjusting nut makes on-of pin more accurately be embedded into embedded groove.
Have in a kind of automatic shearing separator of above-mentioned sewing machine cutting knife, on the madial wall of the head and be oriented to
Groove, the leading truck are partially embedded in guide groove.Guide groove improves the stability of leading truck movement, so as to improve slitter shaft and cut
The moving stability of knife, improve cutting knife and cut the effect of fabric, and on-of pin accurately, is timely embedded in or is left embedding
Enter groove.
Compared with prior art, the automatic shearing separator of sewing machine provided by the invention has advantages below:
1st, this automatic shearing separator promotes slitter shaft to move down by embedded cylinder, on-of pin is embedded into leading truck
In embedded groove, cutting knife is set to be located at working condition, main shaft rotation drives driving lever to swing up and down, so as to realize cutting knife automatic shearing section
Material, automaticity is high, and after the completion of shearing, separation cylinder operation makes on-of pin leave embedded groove by resetting spanner, and cutting knife exists
Homing in the presence of the elastic force of spring two, without manually operated, automaticity is high.
2nd, there is installation cavity, the top of panel has installing plate, this automatic shearing separator in the panel of this sewing machine
Parts install in the panel or on panel, that is, prevent take up the space of head of sewing machine, make this automatic shearing separator
It can be directly assembled in existing sewing machine, strong adaptability.
Brief description of the drawings
Fig. 1 is the overall structure diagram of the automatic shearing separator of this sewing machine cutting knife.
Fig. 2 is the partial structural diagram of the automatic shearing separator of this sewing machine cutting knife.
Fig. 3 is the partial structural diagram of this sewing machine.
In figure, 1, head;2nd, cutting knife;3rd, panel;31st, installation cavity;4th, slitter shaft;5th, embedded cylinder;6th, cylinder is separated;7、
Reset spanner;8th, driving lever;9th, spring one;10th, leading truck;11st, embedded groove;12nd, spring two;13rd, main shaft;14th, swinging axle;15、
Cam;16th, on-of pin;17th, abutment face;18th, installing plate;19th, adjusting nut;20th, blind hole;21st, guide groove.
Embodiment
It is the specific embodiment of the present invention and with reference to accompanying drawing below, technical scheme is further described,
But the present invention is not limited to these embodiments.
As shown in Figure 1, Figure 2, Figure 3 shows, sewing machine includes head 1 and cutting knife 2, and the front end face of head 1 is fixed with panel 3, head 1
In be provided with main shaft 13 and swinging axle 14, main shaft 13 is connected by cam 15 with one end of swinging axle 14, the other end of swinging axle 14
Driving lever 8 is hinged with, is provided with spring 1 at driving lever 8, in the present embodiment, spring 1 is torsion spring, and spring 1 and driving lever 8 are coaxially set
Put, outer end of the driving lever 8 away from hinged end is fixed with on-of pin 16, is provided with slitter shaft 4 in head 1, cutting knife 2 is located at slitter shaft 4
Bottom, cutting knife 2 is meshed with needle plate can realize the purpose of cutting fabric.
As shown in figure 1, this automatic shearing separator includes embedded cylinder 5 and separation cylinder 6, embedded cylinder 5 is along vertical
Direction is set, and separation cylinder 6 is horizontally disposed.
The top of panel 3 extends upward an installing plate 18, and embedded cylinder 5 is connected on installing plate 18, and embedded cylinder 5 is lived
The outer end screw thread of stopper rod is fixed with adjusting nut 19, and the piston rod of embedded cylinder 5 sets with the top face of slitter shaft 4, cut
The top of cutter shaft 4 has the blind hole 20 that diameter is more than the embedded piston rod outer end of cylinder 5, and the diameter of blind hole 20 is less than regulation spiral shell
The external diameter of mother 19.
Leading truck 10 is fixed with outside slitter shaft 4, there is embedded groove 11, embedded groove 11 is located at leading truck 10 and leaned on leading truck 10
The side of nearly panel 3, the lower section of the embedded groove 11 of leading truck 10 have smooth abutment face 17, spring 2 12 are cased with outside slitter shaft 4,
The one end of spring 2 12 is resisted against the bottom of leading truck 10, and the other end is resisted against the bottom of head 1, had on the madial wall of head 1
Guide groove 21, leading truck 10 are partially embedded in guide groove 21, and guide groove 21 plays a part of guiding.
Separation cylinder 6 is connected on panel 3, separates and reset spanner 7 is fixed with the piston rod of cylinder 6, and driving lever 8, which is located at, to be cut
Between cutter shaft 4 and panel 3, and driving lever 8 positioned at resetting between spanner 7 and panel 3, has installation cavity 31, driving lever simultaneously in panel 3
8 and spring 1 be integrally located in installation cavity 31, reset spanner 7 part and be located in installation cavity 31.
When needing the shearing fabric of cutting knife 2, system transmission signal to the embedded magnetic valve of cylinder 5, solenoid-driven insertion cylinder
5, embedded cylinder 5 works, and the embedded piston rod of cylinder 5 stretches out, and the outer end of the embedded piston rod of cylinder 5 is inserted in the top of slitter shaft 4
In blind hole 20, adjusting nut 19 is resisted against the top of slitter shaft 4, and the promotion slitter shaft 4 of adjusting nut 19 overcomes the bullet of spring 2 12
Power moves down slitter shaft 4, leading truck 10 and cutting knife 2, after the height of setting is dropped to, the on-of pin on driving lever 8
16 are embedded into embedded groove 11 in the presence of the elastic force of spring 1, and now cutting knife 2 passes through slitter shaft 4, leading truck 10, on-of pin
16th, driving lever 8, swinging axle 14, cam 15 are connected with main shaft 13, and moving up and down for cutting knife 2 is realized by the rotation of main shaft 13, so as to
Realize the automatic shearing fabric of cutting knife 2, automaticity height;When shearing completion, system transmission signal to the separation electromagnetism of cylinder 6
Valve, solenoid-driven separation cylinder 6, separation cylinder 6 work, and the piston rod of separation cylinder 6 shrinks, and is pulled by resetting spanner 7
Driving lever 8 makes on-of pin 16 leave embedded groove 11, and spring 2 12 extends, and makes to move on on slitter shaft 4, leading truck 10 and cutting knife 2 original
Position, realize that cutting knife 2 is automatically separated, now on-of pin 16 is resisted against on the abutment face 17 of leading truck 10.
Specific embodiment described herein is only to spirit explanation for example of the invention.Technology belonging to the present invention is led
The technical staff in domain can be made various modifications or supplement to described specific embodiment or be replaced using similar mode
Generation, but without departing from the spiritual of the present invention or surmount scope defined in appended claims.
Although head 1, cutting knife 2, panel 3, installation cavity 31, slitter shaft 4, embedded cylinder 5, separation have more been used herein
Cylinder 6, reset spanner 7, driving lever 8, spring 1, leading truck 10, embedded groove 11, spring 2 12, the swinging axle 14 of main shaft 13, cam
15th, the term such as on-of pin 16, abutment face 17, installing plate 18, adjusting nut 19, blind hole 20, guide groove 21, but be not precluded from using
The possibility of other terms.It is used for the purpose of more easily describing and explaining the essence of the present invention using these terms;Them
Any additional limitation is construed to all to disagree with spirit of the present invention.