A kind of cutter mechanism of sewing machine
Technical field
This utility model belongs to sewing machine technique field, is related to a kind of cutter mechanism of sewing machine.
Background technology
Sewing machine is the machine sutured sewing by suture, including needle bar mechanism, Yarn taking-up mechanism, feed mechanism, hooks line
Mechanism, hold-down mechanism, Winder and lubricating arrangement etc..Sewing machine can be divided into according to frame mode or sewing technology mode
Flat seam machine, chain seam machine, overedger, lockstitch button holder and bag-opening machine etc..During sewing medicated clothing, the perforate on cloth is needed to be used for
The pocket of clothes or trousers is made, in order to improve the efficiency of perforate, cutter mechanism is often set on sewing machine.Bag-opening machine is
It is mainly used in a kind of sewing machine for opening sanction and sewing of pocket or trousers pocket in garment manufacturing industry.
Chinese patent literature data discloses the center cutter mechanism [application number for proposing a kind of automatic pocket sewing machine:
201120385197.7;Authorization Notice No.:CN202298133U], it is arranged at out on the fuselage of bag flat seam machine, and it is put down with bag is opened
The center knife bar of seam machine is connected, and the mechanism includes cutter connecting rod, drive mechanism and clutch, and one end of cutter connecting rod is hinged on
On the knife bar of center, the other end of cutter connecting rod is connected with drive mechanism, can pass through cutter connecting rod band in drive mechanism course of action
Disorder of internal organs heart knife bar is back and forth moved up and down, and clutch is connected with cutter connecting rod and clutch can make above-mentioned drive mechanism action
During drive or move back and forth without disorder of internal organs heart knife bar.Drive mechanism includes motor, fixing axle, power transmission shaft, connecting rod one, connecting rod
Two and connecting rod three, fixing axle and motor are connected on fuselage, and power transmission shaft is fixed in the rotating shaft of motor, one end hinge of connecting rod two
It is connected in fixing axle, one end of connecting rod one and connecting rod three is by the same both sides for selling the other end for being articulated with connecting rod two, connecting rod
One other end is hinged on end part of driving shaft edge, and the other end of connecting rod three is hinged on cutter connecting rod, its two ends of connecting rod two
Length between its two ends hinged place of length between hinged place and connecting rod three is identical.End part of driving shaft has eccentric, connecting rod
One other end is hinged on eccentric and its hinged place is offset with power transmission shaft axle center.Clutch include cylinder, communtation arm and
Commutation connecting rod, be articulated with the middle part of communtation arm on fuselage, piston rod and communtation arm one end of cylinder are hinged, the communtation arm other end and
Commutation connecting rod one end is hinged, and the commutation connecting rod other end is hinged with cutter connecting rod.Commutation connecting rod and connecting rod three are by same pin hinge
It is connected to the both sides of cutter connecting rod.
The center cutter mechanism complex structure of above-mentioned automatic pocket sewing machine, the fuselage space of occupancy are big.
The content of the invention
The purpose of this utility model is the problems referred to above existed for prior art, it is proposed that a kind of cutter machine of sewing machine
Structure, the technical problem of solution are how to simplify cutter mechanism while cutter mechanism stable operation is realized.
The purpose of this utility model can be realized by following technical proposal:
A kind of cutter mechanism of sewing machine, is arranged on the head of sewing machine, including the cutting knife being vertically located on head
The sliding drive mechanism that axle, the cutting knife for being fixedly connected on slitter shaft lower end and driving slitter shaft are slided up and down in head, its
It is characterised by, the sliding drive mechanism includes connecting rod one, the power transmission shaft being located in head and the pendulum being fixed on head
Galvanic electricity machine, the motor shaft of the oscillating motor is connected with the drive end of power transmission shaft and oscillating motor can drive power transmission shaft around biography
The axis oscillating of moving axis, the driven end of the power transmission shaft are fixedly connected with crank one, the fixing end and power transmission shaft of the crank one
Driven end be fixedly connected, movable end and the drive end of connecting rod one of the crank one are hinged, the driven end of the connecting rod one with
Slitter shaft is hinged.
When oscillating motor works, the motor shaft of oscillating motor swings and drives power transmission shaft around the axis oscillating of power transmission shaft,
The movable end of crank one on power transmission shaft is enabled around the axis oscillating of power transmission shaft, so as to pass through one drivening rod one of connecting rod
On the slitter shaft that is hinged slide up and down in head, enable cutting knife to realize cutting cloth work.This cutter mechanism is relative to existing skill
Art reduces the parts such as fixing axle, clutch, is simplified cutter mechanism, reduces the sky of cutter mechanism occupancy itself
Between volume, and realize swinging by a small margin just make cutting knife and move up and down using oscillating motor, reduce cutter mechanism operation
When required space, make take up room reduction of the cutter mechanism on head.
In the cutter mechanism of above-mentioned sewing machine, the sliding drive mechanism also include being fixed on head with perpendicular
The guide holder of straight gathering sill, has the slide block that can be slided up and down along gathering sill, the slide block and cutting knife in the gathering sill
Axle is hinged.
The setting of gathering sill and slide block limited to circumferentially rotating for slitter shaft, prevents slitter shaft from sliding up and down
During occur circumferentially rotating and affect cutting knife cut cloth work, it is ensured that the stable operation of cutter mechanism.
In the cutter mechanism of above-mentioned sewing machine, connecting pole on the slitter shaft, is fixedly connected with, the connecting pole
One end is fixedly connected on slitter shaft, and the other end of the connecting pole is arranged with connecting rod one successively along the direction away from slitter shaft
Driven end and slide block, and slide block and connecting rod one be hinged on connecting pole.
Slide block and connecting rod one are connected into column articulated with same, cutter mechanism can be simplified.Simultaneously connecting rod one is arranged on
Between slide block and slitter shaft, the space of cutter mechanism occupancy is reduced by changing the setting of one position of connecting rod.
In the cutter mechanism of above-mentioned sewing machine, the side of the slide block is spigot surface, the spigot surface and gathering sill
Side on vertical direction reclines;The spigot surface is provided with the rounded channels for inwardly concaving, screw thread on the upper end of the guide holder
Bulb plunger is connected with, the bulb of the bulb plunger can be snapped onto in rounded channels.
When the bulb of bulb plunger is snapped onto in rounded channels, there is no using for external force, slide block can not be in gathering sill
Interior slip.The setting of bulb plunger and rounded channels can prevent slitter shaft from surprisingly sliding when stopping at a high position, prevent cutting knife not
Dropping during work affects the carrying out of sewing, it is ensured that the stable operation of cutter mechanism.
In the cutter mechanism of above-mentioned sewing machine, the ball head column is threaded with lock nut, the locking beyond the Great Wall
Nut is resisted against on the lateral surface of guide holder.
The setting of lock nut has fixation to bulb plunger, can prevent the bulb of bulb plunger from can not snap onto
Rounded channels the occurrence of, so that it is guaranteed that cutting knife surprisingly will not slide, it is ensured that the stability of cutter mechanism.
In the cutter mechanism of above-mentioned sewing machine, installing hole is provided with the head, is fixed with the installing hole
Axle sleeve, is equipped with the axis that the power transmission shaft and the power transmission shaft can be around power transmission shaft in the axle sleeve and puts in the axle sleeve
It is dynamic.
The setting of axle sleeve can reduce the abrasion between power transmission shaft and head, power transmission shaft is run steadily in the long term.
In the cutter mechanism of above-mentioned sewing machine, back-up ring, the gear on the driven end of the power transmission shaft, are fixedly connected with
Circle is abutted on the inwall of head near the end face of installing hole.
The setting of back-up ring can reduce the axial float of power transmission shaft, make cutter mechanism stable operation.
In the cutter mechanism of above-mentioned sewing machine, arrange between the movable end of the drive end and crank one of the connecting rod one
There is a pin one, the pin one is fixedly connected through the drive end of connecting rod one with the movable end of crank one, pin one and connecting rod one
Drive end between be provided with oilless bearing.
The abrasion that oilless bearing can be reduced between movable part is set, makes cutter mechanism longtime running reliable and stable, while
Without the need for oil addition during use, it is to avoid lubricating oil overflows pollution cloth.
In the cutter mechanism of above-mentioned sewing machine, the sliding drive mechanism also include connecting rod two, and power transmission shaft master
Crank two and the crank three being fixedly connected with the motor shaft of oscillating motor that moved end is fixedly connected;The fixing end of the crank two
It is fixedly connected with the drive end of power transmission shaft, movable end and the driven end of connecting rod two of the crank two are hinged;The crank three
Fixing end is fixedly connected with the motor shaft of oscillating motor, and movable end and the drive end of connecting rod two of the crank three are hinged.
When the axis collinear of axis and the power transmission shaft of the motor shaft of oscillating motor, can by the motor shaft of oscillating motor with
The drive end of power transmission shaft is directly fixed together.When the structure of head is restricted the axle of the motor shaft for causing oscillating motor
When line is not conllinear with the axis of power transmission shaft, can be by the motor shaft of oscillating motor by arranging connecting rod two, crank two and crank three
Motion pass to power transmission shaft, so as to realize the motion of power transmission shaft.And connecting rod two, crank two and crank three are to realize swinging electricity
The minimum mechanism unit of motion transmission between the motor shaft and power transmission shaft of machine so that cutter mechanism structure while operation is realized
It is simplified.
In the cutter mechanism of above-mentioned sewing machine, arrange between the movable end of the driven end and crank two of the connecting rod two
Pin two, is provided with pin three between the movable end of the drive end and crank three of the connecting rod two;The pin two passes through connecting rod
Two driven end is fixedly connected with the movable end of crank two, activity of the pin three through the drive end and crank three of connecting rod two
End is fixedly connected;Nothing is provided between the driven end of pin two and connecting rod two and between the drive end of pin three and connecting rod two
Oil bearing.
The abrasion that oilless bearing can be reduced between movable part is set, makes cutter mechanism longtime running reliable and stable, while
Without the need for oil addition during use, it is to avoid lubricating oil overflows pollution cloth.
Compared with prior art, this utility model has advantages below:
By the power transmission shaft, crank one and the connecting rod one that arrange oscillating motor and transmission oscillating motor motion, cutter machine is made
Structure can run and simplify cutter mechanism.Cutting knife is prevented to simplify while dropping by arranging bulb plunger and spherical groove
Cutter mechanism.Cutter mechanism stable operation is made by arranging slide block and guide holder;By arranging connecting rod two, crank two and crank
Three, the operation of cutter mechanism is realized in the transmission moved when realizing the motor shaft of oscillating motor with power transmission shaft non-colinear;By setting
Put back-up ring and axle sleeve ensure that the stable operation of power transmission shaft;By arranging oilless bearing, it is ensured that the stable operation of cutter mechanism,
The pollution of lubricating oil is avoided simultaneously.
Description of the drawings
Fig. 1 is the axonometric chart one of this cutter mechanism;
Fig. 2 is the axonometric chart two of this cutter mechanism;
Fig. 3 is the exploded view of this cutter mechanism;
Fig. 4 is the exploded view of guide holder, slide block and bulb plunger in this cutter mechanism;
Fig. 5 is the location diagram when bulb of bulb plunger in this cutter mechanism is snapped onto in the rounded channels of slide block;
Fig. 6 is this cutter mechanism schematic view of the mounting position.
In figure, 1, head;1a, installing hole;2nd, slitter shaft;3rd, cutting knife;4th, sliding drive mechanism;4a, connecting rod one;4b, biography
Moving axis;4c, oscillating motor;4d, crank one;4e, guide holder;4e1, gathering sill;4f, slide block;4f1, spigot surface;4f2, sphere
Groove;4g, bulb plunger;4g1, lock nut;4h, connecting pole;4i, connecting rod two;4j, crank two;4k, crank three;4m, pin
One;4n, pin two;4p, pin three;4q, oilless bearing;5th, axle sleeve;6th, back-up ring.
Specific embodiment
The following is specific embodiment of the utility model and combine accompanying drawing, further is made to the technical solution of the utility model
Description, but this utility model is not limited to these embodiments.
Embodiment one
As shown in figs 1 to 6, a kind of cutter mechanism of sewing machine, is arranged on the head 1 of sewing machine, including vertically wearing
Slitter shaft 2 on head 1, the cutting knife 3 for being fixedly connected on 2 lower end of slitter shaft and drive slitter shaft 2 in the head 1 on glide
Dynamic sliding drive mechanism 4.Sliding drive mechanism 4 includes one 4a of connecting rod, the power transmission shaft 4b being located in head 1 and is fixed on
The motor shaft of the oscillating motor 4c on head 1, oscillating motor 4c is connected with the drive end of power transmission shaft 4b and oscillating motor 4c can
Power transmission shaft 4b is driven around the axis oscillating of power transmission shaft 4b.Master of the sliding drive mechanism 4 also including connecting rod two 4i and power transmission shaft 4b
Two 4j of crank and three 4k of crank being fixedly connected with the motor shaft of oscillating motor 4c that moved end is fixedly connected;Three 4k's of crank consolidates
Fixed end is fixedly connected with the motor shaft of oscillating motor 4c, and movable end and the drive end of two 4i of connecting rod of three 4k of crank are hinged;Crank
The fixing end of two 4j is fixedly connected with the drive end of power transmission shaft 4b, and the movable end of two 4j of crank is cut with scissors with the driven end of two 4i of connecting rod
Connect.The driven end of power transmission shaft 4b is fixedly connected with one 4d of crank, and the fixing end of one 4d of crank is fixed with the driven end of power transmission shaft 4b
Connection, movable end and the drive end of one 4a of connecting rod of one 4d of crank are hinged, and driven end and the slitter shaft 2 of one 4a of connecting rod are hinged.When
Can be by the motor shaft of oscillating motor 4c and power transmission shaft during the axis collinear of the motor shaft axis and power transmission shaft 4b of oscillating motor 4c
The drive end of 4b is directly fixed together.
Sliding drive mechanism 4 also include be fixed on head 1 with the guide holder 4e for being vertically directed groove 4e1, gathering sill
There is in 4e1 the slide block 4f that can be slided up and down along gathering sill 4e1, slide block 4f to be hinged with slitter shaft 2.It is fixed on slitter shaft 2
Connecting pole 4h is connected with, one end of connecting pole 4h is fixedly connected on slitter shaft 2, and the other end of connecting pole 4h is along away from cutting knife
The direction of axle 2 is arranged with the driven end and slide block 4f of one 4a of connecting rod successively, and pin four is fixed through slide block 4f and connecting pole 4h and connected
Connect, slide block 4f and one 4a of connecting rod are hinged on connecting pole 4h.The side of slide block 4f is spigot surface 4f1, spigot surface 4f1 and gathering sill
Side on 4e1 vertical directions reclines;Spigot surface 4f1 is provided with spherical rounded channels 4f2 of the inner surface for inwardly concaving, and is oriented to
Bulb plunger 4g is threaded with the upper end of seat 4e, the bulb of bulb plunger 4g can be snapped onto in rounded channels 4f2.Ball head column
Lock nut 4g1 is threaded with plug 4g, lock nut 4g1 is resisted against on the lateral surface of guide holder 4e.
One 4m of pin, the driven end of two 4i of connecting rod are provided between the movable end of one 4d of drive end and crank of one 4a of connecting rod
Two 4n of pin is set and the movable end of two 4j of crank between, is arranged between the movable end of three 4k of drive end and crank of two 4i of connecting rod
There is three 4p of pin.One 4m of pin is fixedly connected through the drive end of one 4a of connecting rod with the movable end of one 4d of crank, and two 4n of pin wears
The driven end for crossing two 4i of connecting rod is fixedly connected with the movable end of two 4j of crank, drive end and song of three 4p of pin through two 4i of connecting rod
The movable end of three 4k of handle is fixedly connected.Between the drive end of one 4a of one 4m of pin and connecting rod, two 4i of two 4n of pin and connecting rod from
Oilless bearing 4q is provided between moved end and between the drive end of two 4i of three 4p of pin and connecting rod.
Installing hole 1a is provided with head 1, axle sleeve 5 in installing hole 1a, is fixed with, be equipped with axle sleeve 5 power transmission shaft 4b and
Power transmission shaft 4b can be in the 5 interior axis oscillating around power transmission shaft 4b of axle sleeve.Back-up ring is fixedly connected with the driven end of power transmission shaft 4b
6, back-up ring 6 is abutted on the inwall of head 1 near the end face of installing hole 1a.The shell of oscillating motor 4c is fixedly connected with motor
Seat, motor cabinet are fixedly connected on head 1.
When oscillating motor 4c works, the motor shaft of oscillating motor 4c swing and successively drive three 4k of crank, two 4i of connecting rod with
And two 4j of crank motions, axis oscillatings of two 4j of the crank motions drive power transmission shaft 4b around power transmission shaft 4b, power transmission shaft 4b swing band
Axis oscillating of the movable end of one 4d of crank on dynamic power transmission shaft 4b around power transmission shaft 4b, one 4d of crank again one 4a of drivening rod from
And make that slitter shaft 2 is slided up and down in head 1 and slide block 4f is slided up and down in gathering sill 4e1, enable cutting knife 3 to realize cutting
Cloth works.When oscillating motor 4c does not work, general cutting knife 3 and slide block 4f are raised to a high position, and the bulb of bulb plunger 4g is snapped onto
Prevent cutting knife 3 from dropping in rounded channels 4f2 of slide block 4f.This cutter mechanism reduces fixing axle, clutch relative to prior art
The parts such as structure, are simplified cutter mechanism, reduce the spatial volume of cutter mechanism occupancy itself, and using by a small margin
The oscillating motor 4c of swing, reduces space required when cutter mechanism runs, makes cutter mechanism accounting on head 1
Reduced with space.
Specific embodiment described herein is only explanation for example to this utility model spirit.This utility model institute
Category those skilled in the art can make various modifications or supplement or using similar to described specific embodiment
Mode substitute, but without departing from it is of the present utility model spirit or surmount scope defined in appended claims.