CN104862891B - A kind of thread cutting mechanism of sewing machine - Google Patents
A kind of thread cutting mechanism of sewing machine Download PDFInfo
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- CN104862891B CN104862891B CN201510340048.1A CN201510340048A CN104862891B CN 104862891 B CN104862891 B CN 104862891B CN 201510340048 A CN201510340048 A CN 201510340048A CN 104862891 B CN104862891 B CN 104862891B
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Abstract
The invention provides a kind of thread cutting mechanism of sewing machine, belong to field of mechanical technique.It solves the problems, such as that the cutting facility of existing sewing machine cannot shorten the length of the upper thread remained on cloth.The thread cutting mechanism of this sewing machine includes drive mechanism, the stationary knife one being fixed on needle plate downside and the moving knife one being hinged on needle plate downside, moving knife one does shear action in the presence of drive mechanism with the cooperation of stationary knife one, needle plate downside is provided with suction line piece, inhale line piece one end and be connected with getter device, have on needle plate for drive inhale line piece make the pin hole of the port of the other end of the suction line piece and needle plate just pair or away from actuator one, stationary knife two is fixed with needle plate upper side and the moving knife part with blade is hinged with, also there is the actuator two for driving moving knife part to make the moving knife part coordinate the upper thread that will be passed from described pin hole to cut with stationary knife two on needle plate.The thread cutting mechanism of this sewing machine has the advantages that the length that can shorten the upper thread remained on cloth.
Description
Technical field
The invention belongs to field of mechanical technique, it is related to a kind of sewing machine, particularly a kind of thread cutting mechanism of sewing machine.
Background technology
In the past, in the noose for forming noose reinforcing stitching reinforces the various circulating sewing machines of sewing machine etc., in needle plate
Downside sets the cutting facility with movable cutter component and fixed cutter component.The cutting facility has movable cutter component and fixing cutter
Component, during sewing finishing, the upper thread cut-out that will be extended from cloth by these moving knife components and stationary knife component automaticity.
At present, the cutting facility can be divided into moving knife component with respect to linear pattern and the moving knife structure that stationary knife component linearly move back and forth
Part is relatively fixed cutter component and carries out a kind of rotation (as disclosed in Chinese patent storehouse cutting facility of sewing machine of reciprocating rotation
[application number：200510056267.3；Authorization Notice No. CN1676723A]), and it is practical.
But the cutting facility of existing sewing machine has a problem that：After sewing is finished, existing cutting facility is only
It is to be cut the upper thread being connected with cloth by the cooperation of movable cutter component and fixed cutter component, this causes to remain on cloth
Upper thread can be long, influences the quality of product, also needs to be cut by will manually remain in the end of a thread on cloth when serious
It is disconnected, operate relatively complicated.
The content of the invention
The purpose of the present invention is directed to existing technology and there is above mentioned problem, it is proposed that a kind of thread cutting mechanism of sewing machine,
Technical problem solved by the invention is how to shorten the length of the upper thread remained on cloth.
The purpose of the present invention can be realized by following technical proposal：A kind of thread cutting mechanism of sewing machine, including driving machine
Structure, the stationary knife one being fixed on needle plate downside and the moving knife one being hinged on needle plate downside, moving knife one is in drive mechanism
Effect is lower and shear action is done in the cooperation of stationary knife one, it is characterised in that described needle plate downside is provided with suction line piece in a tubular form, inhales line
Part one end is connected with the getter device that can make that negative pressure is produced on the inside of the suction line piece, and have on needle plate makes the suction for driving suction line piece
The port of the other end of line piece and the pin hole of needle plate just pair or away from actuator one, it is fixed to be fixed with described needle plate upper side
Knife two and be hinged with the moving knife part with blade, also have on the needle plate for drive moving knife part make the moving knife part with it is described
Stationary knife two coordinates the actuator two that the upper thread that will be passed from described pin hole is cut.
During sewing, cloth is located at the upside of stationary knife two, and upper thread is located in pin hole.After cloth sewing is finished, driving machine
Structure drives the moving knife one on needle plate downside to rotate and coordinate with stationary knife one and cuts upper thread；Then actuator one works,
Make the port of suction line piece just right with pin hole, and in the presence of getter device, suction line piece generation negative pressure will be remained on cloth
Upper thread toward drop-down, make upper thread tight into a straight line being vertically arranged, the then work of actuator two drives moving knife part to rotate simultaneously
Coordinate with stationary knife two and cut the upper thread being straightened, so as to effectively shorten the length of the upper thread remained on cloth.For by face
Each parts that line is cut all are distributed on needle plate, effectively reduce the gap between each parts, make cutting for this sewing machine
Line mechanism becomes compact.Secondly, stationary knife two and moving knife part are respectively positioned at pin hole, effectively reduce stationary knife one, moving knife one, the and of stationary knife two
Gap of the moving knife part between this, further increases the structural compactness of the thread cutting mechanism of this sewing machine.
In the thread cutting mechanism of above-mentioned sewing machine, described stationary knife two is provided with the through hole one worn for upper thread, and institute
The position of the through hole one stated is faced with the position of described pin hole, and the blade of described stationary knife two is located at through hole one.
That is the position of upper thread cut-out is located at through hole.Using above-mentioned structure, the blade of upper thread and stationary knife two is effectively reduced
The distance between, to shorten the length that upper thread extends under the effect of moving knife part to the direction of stationary knife two, so as to further shorten residual
The length of the upper thread on cloth.
In the thread cutting mechanism of above-mentioned sewing machine, described needle plate is provided with what the movement for inhaling line piece was play the guiding role
Guide frame.
By setting guide frame, suction line piece is set more accurately to be moved in the presence of actuator one with pin hole phase just
To position, make upper thread tight all the time into a straight line being vertically arranged in the presence of getter device, so as to effectively shorten residual
The length of the upper thread stayed on cloth.
In the thread cutting mechanism of above-mentioned sewing machine, described guide frame includes being arranged on needle plate downside and in bar
The chute of shape, the sliding block in chute and the connecting rod one being hinged on needle plate, one end phase of described suction line piece and sliding block
Fix, and the other end of sliding block is mutually fixed with one end of connecting rod one, the other end of described connecting rod one is mutually fixed with actuator one.
Actuator one is that any one of cylinder, oil cylinder, electromagnet this three is possible.Driven by actuator one
Connecting rod one is rotated to be converted into the linear motion of sliding block, and the port that line piece is inhaled to be effectively ensured faces with pin hole position, makes face
Line is tight all the time into a straight line being vertically arranged in the presence of getter device, so as to effectively shorten the face remained on cloth
The length of line.Meanwhile, the connecting rod one being hinged on needle plate by setting is coupled together sliding block and actuator one, relative to sliding block
Directly be connected this technical scheme with actuator one, it is possible to reduce the distance between actuator one and pin hole, so as to reduce face
Gap between each parts that line is cut, making the thread cutting mechanism of sewing machine becomes compacter.
In the thread cutting mechanism of above-mentioned sewing machine, described actuator one is fixed on the downside of needle plate, described
Connecting rod one is hinged on the downside of needle plate.
Using above-mentioned structure, the gap between each parts for cutting upper thread can be further reduced, make sewing machine
Thread cutting mechanism become compacter.
Alternatively, in the thread cutting mechanism of above-mentioned sewing machine, described guide frame includes being arranged on pin
Sliding groove on plate downside and in strip and the sliding shoe in sliding groove, described actuator one are fixed on the upper of needle plate
On side, described suction line piece is mutually fixed with one end of sliding shoe, and the other end of sliding shoe is mutually fixed with actuator one.
In the thread cutting mechanism of above-mentioned sewing machine, described actuator two is fixed on the downside of needle plate, described
Moving knife part includes moving knife two and the connecting rod two that is hinged with needle plate upper side with blade, and connecting rod two one end and moving knife two
Mutually fixed, described actuator two is connected by connector with the other end of described connecting rod two.
Actuator two is located on the downside of needle plate, between each parts that upper thread is cut in further reduction
Gap, making the thread cutting mechanism of sewing machine becomes compacter.
Alternatively, in the thread cutting mechanism of above-mentioned sewing machine, described moving knife part is to be hinged on needle plate
And the moving knife three with blade, described actuator two is fixed on the upper side of needle plate, and the actuator two and moving knife three-phase
Even.
In the thread cutting mechanism of above-mentioned sewing machine, described connector includes the company being slidably connected on needle plate downside
Block is connect, pilot hole one is offered on the side wall of the end not being connected with moving knife two on described connecting rod two, described contiguous block
There is the guide being in the form of a column on upper side, and described guide is plugged in pilot hole one.
Actuator two is that any one of cylinder, oil cylinder, electromagnet this three is possible.Driven by actuator two
Contiguous block is slided to be converted into the rotation of connecting rod two so that the stable rotation of moving knife two and coordinate with stationary knife two do shear action will
Upper thread is cut, and the thread cutting mechanism that improve this sewing machine realizes that " shortening remains in the length of the upper thread on cloth " this purpose is steady
It is qualitative.
Alternatively, in the thread cutting mechanism of above-mentioned sewing machine, described connector includes being slidably connected at
Lead column two on needle plate downside, pilot hole is offered on the side wall of the end not being connected with moving knife two on described connecting rod two
Two, and the lower end of described lead column two is plugged in described pilot hole two.
In the thread cutting mechanism of above-mentioned sewing machine, bearing pin is fixed with described contiguous block, described guide is pin
The bar portion of axle.
Alternatively, in the thread cutting mechanism of above-mentioned sewing machine, described guide is contiguous block downside
The lead column one for protruding above.
In the thread cutting mechanism of above-mentioned sewing machine, described suction line piece includes flexible pipe and in a tubular form and by rigid material system
Into vacuum noz(zle), one end of described flexible pipe is connected with described getter device, and the flexible pipe other end and described vacuum noz(zle)
It is connected.
That is the hardness of vacuum noz(zle) is higher, it is to avoid vacuum noz(zle) is deformed upon in breathing process, so that it is guaranteed that vacuum noz(zle) enters
Gas port is faced with pin hole all the time, makes upper thread tight all the time into a straight line being vertically arranged in the presence of getter device, from
And effectively shorten the length of the upper thread remained on cloth.Natural, it is that one whole flexible pipe is also possible to inhale line piece.
Compared with prior art, the thread cutting mechanism of this sewing machine has advantages below：
1st, by getter device is set and can make the port of suction line piece and pin hole just to actuator one, make suction line piece inhale
Produce negative pressure to remain in upper thread on cloth toward drop-down in the presence of device of air, make upper thread tight into one be vertically arranged it is straight
Line, the then work of actuator two drives moving knife part to rotate and coordinate with stationary knife two and cuts the upper thread being straightened, so as to effectively contract
The length of the short upper thread remained on cloth.
2nd, needle plate is all distributed in for each parts for cutting upper thread, between effectively reducing between each parts
Gap, making the thread cutting mechanism of this sewing machine becomes compact；Secondly, stationary knife two and moving knife part are respectively positioned at pin hole, effectively reduce stationary knife
First, the gap of moving knife one, stationary knife two and moving knife part between this, further increases the structure of the thread cutting mechanism of this sewing machine
Compactedness.
3rd, the knife of through hole and stationary knife two is faced by setting the position of the through hole and pin hole worn for upper thread on stationary knife two
Sword is located at through hole, effectively reduces the distance between blade of upper thread and stationary knife two, with shorten upper thread under the effect of moving knife part to
The length that the direction of stationary knife two extends, so as to further shorten the length of the upper thread remained on cloth.
4th, using the vacuum noz(zle) that hardness is high, it is to avoid vacuum noz(zle) is deformed upon in breathing process, so that it is guaranteed that vacuum noz(zle)
Air inlet is faced with pin hole all the time, makes upper thread tight all the time into a straight line being vertically arranged in the presence of getter device,
So as to effectively shorten the length of the upper thread remained on cloth.
Brief description of the drawings
Fig. 1 is structural representation of this thread cutting mechanism on needle plate downside.
Fig. 2 is structural representation of this thread cutting mechanism on needle plate upper side.
Fig. 3 is the mplifying structure schematic diagram at A in Fig. 2.
Fig. 4 is getter device and the attachment structure schematic diagram for inhaling line piece.
Fig. 5 is to inhale line piece to be in the structural representation for inhaling wire state.
Fig. 6 is the position view after moving knife two completes trimming.
In figure, 1, drive mechanism；1a, connecting rod three；1b, pull bar；1c, drive link；2nd, moving knife one；3rd, stationary knife one；4th, moving knife
Part；4a, moving knife two；4b, connecting rod two；4b1, pilot hole one；5th, line piece is inhaled；5a, flexible pipe；5b, vacuum noz(zle)；6th, stationary knife two；It is 6a, logical
Kong Yi；7th, needle plate；7a, pin hole；7b, chute；8th, getter device；8a, jet part；8b, three-way pipe；8c, magnetic valve；9th, actuator
One；10th, sliding block；10a, shoulder block；11st, connecting rod one；12nd, actuator two；13rd, connector；13a, contiguous block；13b, guide.
Specific embodiment
The following is specific embodiment of the invention and with reference to accompanying drawing, technical scheme is further described,
But the present invention is not limited to these embodiments.
Embodiment one
As depicted in figs. 1 and 2, the thread cutting mechanism of this sewing machine by drive mechanism 1, moving knife 1, stationary knife 1, moving knife part 4,
Inhale the composition such as line piece 5, stationary knife 26.Wherein, moving knife 1, stationary knife 1, moving knife part 4 and stationary knife 264 are respectively provided with blade.
Sewing machine includes the needle plate 7 with pin hole 7a, and moving knife 1 is hinged on the downside of needle plate 7, and stationary knife 1 is solid
It is scheduled on the downside of needle plate 7, moving knife 1 does shear action in the presence of drive mechanism 1 with the cooperation of stationary knife 1.In this reality
Apply in example, drive mechanism 1 is by motor (not shown), mounting seat (not shown), the 1a of connecting rod three, pull bar 1b, drive link 1c, crank etc.
Composition.
Specifically, mounting seat is fixed in sewing machine body and above-mentioned motor is fixed in mounting seat.Pull bar 1b's
One end is hinged by cam and axial screw with the rotating shaft of motor；As shown in figure 1, the other end of pull bar 1b and drive link 1c phases
Fixed, the drive link 1c other ends are fixed with the crank being hinged with needle plate 7, and the crank other end is by the 1a of connecting rod three and moving knife 1
It is connected.When using, machine shaft drives cam rotation, cam rotation to change into the axial movement of pull bar 1b, and then pull bar 1b leads to
Crossing drive link 1c drives crank to rotate to be converted to the axial movement of the 1a of connecting rod three, so as to drive moving knife 1 to be rotated around pin joint.
As shown in Figure 1 and Figure 4, line piece 5 is inhaled in a tubular form and positioned at the downside of needle plate 7.Inhaling the one end of line piece 5 and be connected with can make the suction
The inner side of line piece 5 produces the getter device 8 of negative pressure；Have on needle plate 7 makes the other end of the suction line piece 5 for driving suction line piece 5
The pin hole 7a of port and needle plate 7 just pair or away from actuator 1.
Specifically, as shown in figure 4, getter device 8 includes jet part 8a, three-way pipe 8b and magnetic valve 8c, wherein, threeway
Pipe 8b is circular body, and the two ends of three-way pipe 8b levels are provided with the gas outlet of air inlet and relative air inlet, air inlet
Diameter less than gas outlet diameter；Jet part 8a and air inlet are connected by connecting tube with magnetic valve 8c respectively, to realize leading to
Cross magnetic valve 8c and control jet part 8a toward the purpose supplied gas in air inlet；Gas outlet is connected by connecting tube with line piece 5 is inhaled.Use
When, jet part 8a to being input into high-speed gas in air inlet, due to the diameter of the diameter less than gas outlet of air inlet so that gas outlet
Interior generation negative pressure, the air now inhaled in line piece 5 flows to gas outlet direction, so that inhale producing negative pressure in line piece 5, then will
The upper thread on cloth is remained in toward drop-down, makes upper thread tight into a straight line being vertically arranged.In the present embodiment, jet part 8a
It is air delivery pump or air compressor.
Further illustrate, as shown in Figure 1 and Figure 5, inhaling line piece 5 includes flexible pipe 5a and in a tubular form and by rigid material be made
One end of vacuum noz(zle) 5b, flexible pipe 5a are connected by connecting tube with the gas outlet on three-way pipe 8b, and the flexible pipe 5a other ends and suction
Valve 5b is connected.In the present embodiment, vacuum noz(zle) 5b is made up of the harder metal material of the quality such as copper alloy, iron, and air-breathing
Mouth 5b and flexible pipe 5a are fixed together by glue.Natural, it is that one whole flexible pipe 5a is also possible to inhale line piece 5, is simply applied
People thinks that suction line piece 5 is using hardness vacuum noz(zle) 5b high, it is to avoid vacuum noz(zle) 5b is deformed upon in breathing process, so that it is guaranteed that
The air inlet of vacuum noz(zle) 5b is faced with pin hole 7a all the time, makes upper thread tight all the time perpendicular into one in the presence of getter device 8
The straight straight line for setting, so as to effectively shorten the length of the upper thread remained on cloth.
Needle plate 7 is provided with the guide frame being play the guiding role to the movement for inhaling line piece 5.In the present embodiment, such as Fig. 1 and Tu
Shown in 4, guide frame include be arranged on the downside of needle plate 7 and in the chute 7b of strip, the sliding block 10 in chute 7b with
And be hinged on the connecting rod 1 on needle plate 7, inhale line piece 5 and mutually fixed with one end of sliding block 10, and sliding block 10 the other end and connecting rod
One 11 one end is mutually fixed, and the other end and the actuator 1 of connecting rod 1 are mutually fixed, so as to pass through the drivening rod of actuator 1
One 11 rotate to be converted into the linear motion of sliding block 10, and the port that line piece 5 is inhaled to be effectively ensured faces with pin hole 7a positions, makes
Upper thread is tight all the time into a straight line being vertically arranged in the presence of getter device 8, so as to effectively shorten remain on cloth
Upper thread length.Further illustrate, as depicted in figs. 1 and 2, sliding block 10 is set in strip and along the length direction of chute 7b；
The bottom wall of chute 7b is provided with through hole set along chute 7b length directions and in strip.Sliding block 10 is located in through hole, should
Be respectively provided with two relative side walls of the upper end of sliding block 10 protrusion and the shoulder block 10a in strip, shoulder block 10a along sliding block 10 length
Degree direction is set, and upper sides of the two shoulder block 10a with needle plate 7 offset, carried out with the rotation to sliding block 10 it is spacing so that sliding
Block 10 stably works.Natural, it is a dovetail groove to use chute 7b, and shape and the dovetail groove of sliding block 10 match, and sliding block 10 is embedding
Closing this technical scheme in dovetail groove can equally realize the purpose of the steady operation of sliding block 10.
Further optimization, as described in Figure 1, actuator 1 is fixed on the downside of needle plate 7, and connecting rod 1 is hinged on pin
On the downside of plate 7.In the present embodiment, actuator 1 is cylinder, natural, and actuator 1 is oil cylinder or electromagnet is also all
Can with.
As shown in Figure 2 and Figure 6, stationary knife 26 is fixed on the upper side of needle plate 7；Moving knife part 4 is hinged on the upside of needle plate 7
On face, and stationary knife 26 and moving knife part 4 are respectively positioned at the pin hole 7a of needle plate 7.Have on needle plate 7 for driving what moving knife part 4 was rotated
Actuator 2 12, and after actuator 1 faces the port of the other end of suction line piece 5 and pin hole 7a, the energy of actuator 2 12
Drive moving knife part 4 to rotate and coordinate the upper thread that will be passed from described pin hole 7a to cut with stationary knife 26.Specifically, at this
In embodiment, as shown in figure 1, actuator 2 12 is cylinder and is fixed on the downside of needle plate 7.Natural, actuator 2 12 is
Being possible oil cylinder or electromagnet more.
As shown in Fig. 2 moving knife part 4 includes the connecting rod two for having the 4a of moving knife two of blade and being hinged with the upper side of needle plate 7
One end of 4b, the 4b of connecting rod two are fixed with the 4a phases of moving knife two, and actuator 2 12 is by a connection piece 13 and the other end of the 4b of connecting rod two
It is connected.
Further illustrate, as depicted in figs. 1 and 2, connector 13 includes the contiguous block being slidably connected on the downside of needle plate 7
13a, offers the 4b1 of pilot hole one, the downside of contiguous block 13a on the side wall of the end not being connected with the 4a of moving knife two on the 4b of connecting rod two
There is the guide 13b being in the form of a column on face, and guide 13b is plugged in the 4b1 of pilot hole one.In the present embodiment, such as Fig. 1 institutes
Show, through having in the gathering sill one of strip on contiguous block 13a, screw is equipped with the gathering sill one.The bar portion of screw and needle plate 7
It is mutually fixed, and the head of screw offsets with contiguous block 13a, so as to realize being slidably connected for contiguous block 13a and needle plate 7.It is natural, adopt
With " being offered on the downside of needle plate 7 in the gathering sill two of strip, contiguous block 13a is located in gathering sill two " this technical side
Case, can equally realize being slidably connected for contiguous block 13a and needle plate 7.
As depicted in figs. 1 and 2, bearing pin is fixed with contiguous block 13a, guide 13b is the bar portion of bearing pin.It is natural, it is oriented to
Part 13b is that the lead column one that contiguous block 13a downsides protrude above is also possible.
Further optimization, as shown in Figures 2 and 3, stationary knife 26 is provided with the 6a of through hole one worn for upper thread, and through hole one
The position of 6a is faced with the position of pin hole 7a, and the blade of stationary knife 26 is located at the 6a of through hole one, i.e. the position of upper thread cut-out is located at
Through hole.Using above-mentioned structure, the distance between blade of upper thread and stationary knife 26 is effectively reduced, to shorten upper thread in moving knife
The length that part 4 extends under acting on to the direction of stationary knife 26, so as to further shorten the length of the upper thread remained on cloth.Enter one
Step explanation, also is provided with the through hole two worn for upper thread on the 4a of moving knife two, and the blade of the 4a of moving knife two is located at through hole two.Driving
In the presence of part 2 12, through hole two can be faced with the position of pin hole 7a.
During sewing, cloth is located at the upside of stationary knife 26, and upper thread is sequentially passed through in pin hole 7a, the 6a of through hole one and through hole two simultaneously
Enter into cloth.After cloth sewing is finished, drive mechanism 1 drive be located at moving knife 1 on the downside of needle plate 7 rotate and with it is fixed
Knife 1 coordinates cuts upper thread；As shown in Figure 1 and Figure 5, then actuator 1 works, and makes the port of vacuum noz(zle) 5b and pin hole 7a
It is just right；Then magnetic valve 8c work makes jet part 8a be connected with three-way pipe 8b, and the high velocity air that now jet part 8a is produced enters
Enter in three-way pipe 8b, produce negative pressure to remain in the upper thread on cloth toward drop-down so that inhaling the inner side of line piece 5, make upper thread tight
Into a straight line being vertically arranged；As shown in Figure 2 and Figure 6, then actuator 2 12 works, and according to this by contiguous block 13a and
The cooperation of the 4b of connecting rod two is cut come the upper thread for driving the 4a of moving knife two to rotate and will be straightened with the cooperation of stationary knife 26, so as to effectively contract
The length of the short upper thread remained on cloth.
Embodiment two
The present embodiment two is essentially identical with the structure and principle of embodiment one, and different place is：Getter device 8 is wrapped
Asepwirator pump and magnetic valve are included, asepwirator pump is connected by magnetic valve with line piece is inhaled.During work, by asepwirator pump directly to inhaling line piece 5
Inner side is evacuated, and the inner side of suction line piece 5 is produced negative pressure.
Embodiment three
The present embodiment three is essentially identical with the structure and principle of embodiment one, and different place is：Guide frame bag
Include and be arranged on the downside of needle plate 7 and the sliding groove in strip and the sliding shoe in sliding groove, actuator 1 is fixed on pin
On the upper side of plate 7, inhale line piece 5 and mutually fixed with one end of sliding shoe, and the other end of sliding shoe is mutually fixed with actuator 1.
Example IV
The present embodiment four is essentially identical with the structure and principle of embodiment one, and different place is：Moving knife part 4 is hinge
It is connected on needle plate 7 and the moving knife with blade three, actuator 2 12 is fixed on the upper side of needle plate 7, and the actuator 2 12
It is connected with moving knife three.
Embodiment five
The present embodiment five is essentially identical with the structure and principle of embodiment one, and different place is：Connector 13 is wrapped
The lead column two being slidably connected on the downside of needle plate 7 is included, on the side wall of the end not being connected with the 4a of moving knife two on the 4b of connecting rod two
Pilot hole two is offered, and the lower end of lead column two is plugged in described pilot hole two.
Specific embodiment described herein is only to the spiritual explanation for example of the present invention.Technology neck belonging to of the invention
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 spirit of the invention or surmount scope defined in appended claims.
Claims (8)
1. a kind of thread cutting mechanism of sewing machine, including drive mechanism (1), the stationary knife one (3) being fixed on needle plate (7) downside and
The moving knife one (2) on needle plate (7) downside is hinged on, moving knife one (2) is matched somebody with somebody in the presence of drive mechanism (1) with stationary knife one (3)
Shear action is done in conjunction, it is characterised in that described needle plate (7) downside is provided with suction line piece (5) in a tubular form, inhales line piece (5) one end
The getter device (8) that the suction line piece (5) inner side can be made to produce negative pressure is connected with, is had on needle plate (7) and is inhaled line piece (5) for driving
Make the pin hole (7a) of the port of the other end of the suction line piece (5) and needle plate (7) just pair or away from actuator one (9), it is described
Stationary knife two (6) is fixed with needle plate (7) upper side and the moving knife part (4) with blade is hinged with, also had on the needle plate (7)
To be passed from described pin hole (7a) for driving moving knife part (4) to coordinate the moving knife part (4) and described stationary knife two (6)
The actuator two (12) that upper thread is cut.
2. the thread cutting mechanism of sewing machine according to claim 1, it is characterised in that described stationary knife two (6) is provided with confession
The through hole one (6a) that upper thread wears, and the position of described through hole one (6a) faces with the position of described pin hole (7a), institute
The blade of the stationary knife two (6) stated is located at through hole one (6a) place.
3. the thread cutting mechanism of sewing machine according to claim 1 and 2, it is characterised in that described needle plate (7) is provided with right
Inhale the guide frame that the movement of line piece (5) play the guiding role.
4. the thread cutting mechanism of sewing machine according to claim 3, it is characterised in that described guide frame includes being arranged on
On needle plate (7) downside and in the chute (7b) of strip, the sliding block (10) in chute (7b) and it is hinged on needle plate (7)
Connecting rod one (11), described suction line piece (5) mutually fixes with one end of sliding block (10), and sliding block (10) the other end and connecting rod one
(11) one end is mutually fixed, and the other end of described connecting rod one (11) is mutually fixed with actuator one (9).
5. the thread cutting mechanism of sewing machine according to claim 4, it is characterised in that described actuator one (9) is fixed on
On the downside of needle plate (7), described connecting rod one (11) is hinged on the downside of needle plate (7).
6. the thread cutting mechanism of sewing machine according to claim 1 and 2, it is characterised in that described actuator two (12) is solid
Be scheduled on the downside of needle plate (7), described moving knife part (4) including the moving knife two (4a) with blade and with needle plate (7) upside
The connecting rod two (4b) that face is hinged, and one end of connecting rod two (4b) mutually fixes with moving knife two (4a), described actuator two (12)
It is connected with the other end of described connecting rod two (4b) by connector (13).
7. the thread cutting mechanism of sewing machine according to claim 6, it is characterised in that described connector (13) includes sliding
It is connected to the contiguous block (13a) on needle plate (7) downside, the end not being connected with moving knife two (4a) on described connecting rod two (4b)
Side wall on offer pilot hole one (4b1), there is the guide being in the form of a column on the upper side of described contiguous block (13a)
(13b), and described guide (13b) is plugged in pilot hole one (4b1).
8. the thread cutting mechanism of sewing machine according to claim 1 and 2, it is characterised in that described suction line piece (5) is including soft
Pipe (5a) and the vacuum noz(zle) (5b) being made in a tubular form and by rigid material, one end of described flexible pipe (5a) fill with described air-breathing
(8) are put to be connected, and flexible pipe (5a) other end is connected with described vacuum noz(zle) (5b).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510340048.1A CN104862891B (en) | 2015-06-17 | 2015-06-17 | A kind of thread cutting mechanism of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510340048.1A CN104862891B (en) | 2015-06-17 | 2015-06-17 | A kind of thread cutting mechanism of sewing machine |
Publications (2)
| Publication Number | Publication Date |
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| CN104862891A CN104862891A (en) | 2015-08-26 |
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| CN105133216B (en) * | 2015-08-18 | 2017-08-25 | 浙江中捷缝纫科技有限公司 | A kind of trimming drive mechanism of sewing machine |
| CN105714485B (en) * | 2016-04-28 | 2019-03-22 | 杰克缝纫机股份有限公司 | The thread cutting mechanism of use in sewing machine |
| CN107916507B (en) * | 2016-10-08 | 2023-10-31 | 杰克科技股份有限公司 | Thread cutting device of sewing machine |
| CN111206347B (en) * | 2020-01-20 | 2021-06-25 | 拓卡奔马机电科技有限公司 | Device for reducing bird nest in sewing machine |
| CN115992420A (en) * | 2023-02-20 | 2023-04-21 | 浙江镨美科智能刺绣设备有限公司 | Thread cutting device and thread cutting method of embroidery machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO1988002039A1 (en) * | 1986-09-19 | 1988-03-24 | Pegasus Sewing Machine Mfg. Co., Ltd. | Empty ring sewing apparatus |
| US5839679A (en) * | 1994-10-26 | 1998-11-24 | Juki Corporation | Bobbin thread winding apparatus |
| CN104358042B (en) * | 2014-12-12 | 2016-08-24 | 浙江中捷缝纫科技有限公司 | A kind of thread cutting mechanism of pattern sewing machine |
| CN104652054B (en) * | 2015-03-17 | 2018-06-05 | 浙江中捷缝纫科技有限公司 | A kind of thread cutting mechanism of sewing machine |
| CN204780201U (en) * | 2015-06-17 | 2015-11-18 | 浙江中捷缝纫科技有限公司 | Sewing machine's thread trimming mechanism |
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Effective date of registration: 20161024 Address after: 317604 Taizhou Province, Yuhuan County, Lantau Island Road, Hing Hong Kong Road, No. 198 Applicant after: Zhejiang Zoje Sewing Technology Co., Ltd. Applicant after: Zhejiang Zhongyi Sewing Machine Co Ltd Applicant after: Zhejiang Besserman sewing machine Co., Ltd. Address before: 317604 Taizhou Province, Yuhuan County, Lantau Island Road, Hing Hong Kong Road, No. 198 Applicant before: Zhejiang Zoje Sewing Technology Co., Ltd. |
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Effective date of registration: 20200925 Address after: 198 Xinggang East Road, Damaiyu street, Yuhuan City, Taizhou City, Zhejiang Province Patentee after: ZHEJIANG ZOJE SEWING MACHINE Co.,Ltd. Address before: 317604, Taizhou, Zhejiang province Yuhuan County barley island Street Hing Tung Road, No. 198 Patentee before: ZHEJIANG ZOJE SEWING MACHINE Co.,Ltd. Patentee before: ZHEJIANG JOYEE SEWING MACHINE Co.,Ltd. Patentee before: ZHEJIANG BSM SEWING MACHINE Co.,Ltd. |
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