CN206599663U - A kind of trimming knife group - Google Patents
A kind of trimming knife group Download PDFInfo
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- CN206599663U CN206599663U CN201720292695.4U CN201720292695U CN206599663U CN 206599663 U CN206599663 U CN 206599663U CN 201720292695 U CN201720292695 U CN 201720292695U CN 206599663 U CN206599663 U CN 206599663U
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- knife
- rocking bar
- directional ball
- trimming
- moving knife
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Abstract
The utility model provides a kind of trimming of overedger knife group, belongs to field of mechanical technique.It solves the problem of existing trimming knife group noise is big, operating is unstable.The trimming of this overedger includes motor, eccentric wheel, rocking bar, moving knife, multi-directional ball and stationary knife with knife group, motor is connected with eccentric wheel, the side of stationary knife is provided with air draught tool rest, the rear end connection of moving knife and rocking bar, moving knife is oppositely arranged with stationary knife, and the eccentric shaft of eccentric wheel, which is slided, to be located in multi-directional ball and can be rotated relative to multi-directional ball, and the front end of rocking bar has columnar part, there is cylindrical hole, multi-directional ball is slidably arranged in cylindrical hole and can rotated in cylindrical hole in columnar part.The eccentric Universal rocking rod mechanism that the trimming knife group of this overedger is mainly made up of eccentric wheel, multi-directional ball and rocking bar, to eliminate left and right displacement and move forward and backward, meanwhile, produced every azimuthal error can be eliminated by the effect of multi-directional ball during installation, kinetic stability is high, reduces noise.
Description
Technical field
The utility model belongs to field of mechanical technique, is related to a kind of trimming knife group.
Background technology
Overedger trimming is always the problem in sewing tech, the knot of the existing overedger cutting facility knife group of in the market
Structure, such as Chinese patent application (application number：201420307942.X) disclose a kind of overedger computer trimming knife group, the use
Knife group includes knife rest and eccentric ratio, and the eccentric ratio is connected by eccentric wheel pacifies below electric machine main shaft, the knife rest rear end
Inhaled equipped with side provided with line hair inlet scoop on the outside of knife group stationary knife, the stationary knife, the eccentric ratio rear end is connected with side suction knife group and moved
Knife, knife group stationary knife is inhaled in the side and side suction knife group moving knife is corresponding up and down, and the eccentric ratio is hinged on by axial screw
On knife rest, the knife rest front end is deviateed in the eccentric ratio front end, after trimming instruction issuing, motor rotation, passes through eccentric wheel
With the effect of eccentric ratio, drive moving knife swing, make to engage when moving knife cutting edge and stationary knife cutting edge, when and separate.Meanwhile, negative pressure
Device starts, and forms air-flow in inlet scoop, line pigtail is sucked in, and forms trimming action.But because mismachining tolerance is with rigging error
Relation, motor, axle center can not be parallel well with moving knife connecting hole center, needs to increase eccentric wheel and connecting rod for this, connecting rod and
Fit clearance between axial screw, to prevent stuck phenomenon from occurring, but fit clearance increases, when can make mechanism kinematic, noise
Greatly, abrasion is accelerated, and operating wild effect occurs.
The content of the invention
The purpose of this utility model is there is above mentioned problem for existing technology, it is proposed that a kind of trimming knife group, this
Utility model technical problem to be solved is：How the stability of operation, reduction operation noise are improved.
The purpose of this utility model can be realized by following technical proposal：A kind of trimming knife group, including motor,
Eccentric wheel, rocking bar, moving knife and stationary knife, the motor are connected with eccentric wheel, and the moving knife is connected with the rear end of the rocking bar,
The moving knife is oppositely arranged with the stationary knife, it is characterised in that also including multi-directional ball, and the eccentric shaft of the eccentric wheel, which is slided, to be worn
In the multi-directional ball and can multi-directional ball motion relatively, the front end of the rocking bar has in columnar part, the columnar part
With cylindrical hole, the multi-directional ball is slidably arranged in the cylindrical hole and can rotated in the cylindrical hole.
When this trimming is worked with knife group, when trimming action is assigned, motor is rotated with eccentric wheel, passes through multi-directional ball
Effect, make rocking bar swing around axial screw, and then form moving knife cutting edge and stationary knife cutting edge persistently to separate and engagement action.Together
When, negative pressure device starts, and forms negative-pressure air-flow in inlet scoop, line pigtail is sucked in, and trimming action is formed at cutting edge.The present apparatus
The main eccentric Universal rocking rod mechanism being made up of eccentric wheel, multi-directional ball and rocking bar, when motor rotates, by the inclined of eccentric wheel
Heart axle moves to eliminate left and right displacement in multi-directional ball, by multi-directional ball is moved forward and backward in the cylindrical hole of rocking bar to eliminate, meanwhile,
Produced every azimuthal error can be eliminated by the effect of multi-directional ball during installation.Therefore, energy precision is matched somebody with somebody between each part
Close, reach that kinetic stability is high, reduce the purpose of noise.
In above-mentioned trimming with knife group, the multi-directional ball is located in the cylindrical hole, is opened on the side wall of the columnar part
Provided with strip and through sliding groove of the columnar part just to two side, the sliding groove is connected with the cylindrical hole,
The eccentric shaft passes through the sliding groove.Multi-directional ball, which is located in cylindrical hole, to be rotated in cylindrical hole, and the design of sliding groove makes
Obtaining eccentric shaft can slide along the sliding groove, so as to drive multi-directional ball to be slided in cylindrical hole, each so as to eliminate
The displacement in orientation and error so that energy precision-fit between each part, reach that kinetic stability is high, reduce the purpose of noise.
In above-mentioned trimming with knife group, the multi-directional ball has the sliding eye run through, and the eccentric shaft, which slides axially, to be worn
It is located in the sliding eye and circumferentially rotates.The sliding eye run through is offered in multi-directional ball so that the eccentric axial portion in eccentric wheel
Dividing can rotate and slide in the sliding eye of multi-directional ball, so as to eliminate left and right displacement.
In above-mentioned trimming with knife group, in addition to air draught tool rest, the middle part of the rocking bar has articulated section, described to be hinged
Portion is hinged on stationary knife by axial screw, and the moving knife is fixed on the rear end of rocking bar, the axial screw and is arranged with compression
Spring, described compression spring one end is resisted against on rocking bar, and the other end is resisted against the head of axial screw.Moving knife is directly anchored to shake
On bar, it is mainly used in side and inhales knife group, compression spring has the effect of pretightning force, all the time with pushes moving knife to stationary knife become
Gesture, it is ensured that moving knife is engaged with stationary knife.
In above-mentioned trimming with knife group, in addition to horizontal suction tool rest, the middle part of the rocking bar has articulated section, described to be hinged
Portion is hinged on horizontal suction tool rest by axial screw, crank is provided between the rocking bar and moving knife, the rear end of the rocking bar has
Resigning breach, the crank is connected with rotating shaft one and rotating shaft two, the rotating shaft one and is fixedly connected with fixture block, and the fixture block is stuck in
The resigning breach is interior and can be slided with respect to resigning breach, and the rotating shaft two and the rotating shaft one are perpendicular, the rotating shaft two
It is connected through the stationary knife and moving knife, compression spring is arranged with the rotating shaft two, described compression spring one end is resisted against stationary knife
On, the other end is resisted against on crank.Connected between moving knife and rocking bar by crank structure, be mainly used in horizontal suction knife group, work as trimming
When action is assigned, motor is rotated with eccentric wheel, by the effect of multi-directional ball, rocking bar is swung around axial screw, and
Moved by crank handle turns moving knife, and then formation moving knife cutting edge and stationary knife cutting edge are persistently separated and engagement action.Compression spring has
There is a pretightning force, all the time with the trend that moving knife is pushed to stationary knife, it is ensured that moving knife is engaged with stationary knife.
In above-mentioned trimming with knife group, well including support base and moving knife seat, the stationary knife is fixed on support base, described
Moving knife is fixed on moving knife seat, and the rotating shaft two is fixed on moving knife seat through the support base, the two ends of the compression spring
Bear against on crank and support base.
Compared with prior art, this trimming has advantages below with knife group：1st, mainly eccentric wheel, multi-directional ball and rocking bar are passed through
The eccentric Universal rocking rod mechanism constituted, when motor rotates, a left side is eliminated by the eccentric shaft of eccentric wheel is moved in multi-directional ball
Right displacement, by multi-directional ball is moved forward and backward in the cylindrical hole of rocking bar to eliminate, meanwhile, produced every azimuthal error during installation
It can be eliminated by the effect of multi-directional ball, therefore, energy precision-fit between each part reaches that kinetic stability is high, reduction is made an uproar
The purpose of sound.
Brief description of the drawings
Fig. 1 is the structure chart of this trimming knife group in embodiment one.
Fig. 2 is the matching chart of eccentric wheel, multi-directional ball and rocking bar in embodiment one.
Fig. 3 is the structure chart of this trimming knife group in embodiment two.
Fig. 4 is the explosive view of this trimming knife group in embodiment two.
In figure, 1, motor；2nd, eccentric wheel；2a, eccentric shaft；3rd, multi-directional ball；4th, rocking bar；4a, columnar part；4a1, cylinder
Hole；4a2, sliding groove；4b, articulated section；4c, resigning breach；5th, moving knife；6th, stationary knife；7th, air draught tool rest；8th, axial screw；9th, press
Contracting spring；10th, crank；11st, rotating shaft one；12nd, rotating shaft two；13rd, fixture block；14th, moving knife seat；15th, support base；16th, horizontal suction tool rest.
Embodiment
The following is specific embodiment of the utility model and with reference to accompanying drawing, further is made to the technical solution of the utility model
Description, but the utility model is not limited to these embodiments.
Embodiment one
As shown in Figure 1-2, this trimming includes motor 1, eccentric wheel 2, rocking bar 4, moving knife 5, stationary knife 6 and universal with knife group
Ball 3.In the present embodiment, predominantly knife group is inhaled in side, and the side of stationary knife 6 is provided with air draught tool rest 7.
Motor 1 is connected with eccentric wheel 2, and the front end of rocking bar 4, which has, has cylindrical hole in columnar part 4a, columnar part 4a
4a1, multi-directional ball 3 is located in cylindrical hole 4a1, is offered on columnar part 4a side wall in strip and through columnar part 4a correspondences two
The sliding groove 4a2 of side wall, sliding groove 4a2 are connected with cylindrical hole 4a1, and multi-directional ball 3 has the sliding eye run through, eccentric wheel 2
Eccentric shaft 2a slides axially through sliding groove 4a2 to be located in sliding eye and circumferentially rotates.The middle part of rocking bar 4 has articulated section
4b, articulated section 4b is hinged on stationary knife 6 by axial screw 8, and moving knife 5 is fixed on the rear end of rocking bar 4, and moving knife 5 is relative with stationary knife 6
Set.Compression spring 9 is arranged with axial screw 8, the one end of compression spring 9 is resisted against on rocking bar 4, and the other end is resisted against axle position spiral shell
The head of nail 8.
When trimming action assign when, motor 1 is rotated with eccentric wheel 2, by the effect of multi-directional ball 3, make rocking bar 4 around
Axial screw 8 to swing, and then the formation cutting edge of moving knife 5 and the cutting edge of stationary knife 6 are persistently separated and engagement action.Meanwhile, negative pressure device
Start, form negative-pressure air-flow in the inlet scoop of air draught tool rest 7, line pigtail is sucked in, trimming action is formed at cutting edge.Work as motor
During rotation, left and right displacement is eliminated by the eccentric shaft 2a of eccentric wheel 2 is moved in multi-directional ball 3, by multi-directional ball 3 rocking bar 4 circle
Moved forward and backward in post holes 4a1 to eliminate, meanwhile, during installation produced every azimuthal error can by the effect of multi-directional ball 3 Lai
Eliminate.Therefore, energy precision-fit between each part, reaches that kinetic stability is high, reduces the purpose of noise.
Embodiment two
The structure of the present embodiment and embodiment one are essentially identical, and its difference is：As shown in Figures 3 and 4, the present embodiment
In, predominantly horizontal suction knife group, including horizontal suction tool rest 16, there is articulated section 4b, articulated section 4b to pass through axial screw at the middle part of rocking bar 4
8 are hinged on horizontal suction tool rest 16, crank 10 are provided between rocking bar 4 and moving knife 5, the rear end of rocking bar 4 has resigning breach 4c, crank
10 are connected with rotating shaft 1 and rotating shaft 2 12, rotating shaft 1 and are fixedly connected with fixture block 13, and fixture block 13 is stuck in resigning breach 4c
And can be slided with respect to resigning breach 4c.Stationary knife 6 is fixed on support base 15, and moving knife 5 is fixed on moving knife seat 14, rotating shaft 2 12
Perpendicular with rotating shaft 1, rotating shaft 2 12 is fixed on moving knife seat 14 through support base 15, and pressure is arranged with the rotating shaft 2 12
Contracting spring 9, the two ends of compression spring 9 are born against on crank 10 and support base 15.
Specific embodiment described herein is only to the utility model spirit explanation for example.The 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 spirit of the present utility model or surmount scope defined in appended claims.
Claims (6)
1. a kind of trimming knife group, including motor (1), eccentric wheel (2), rocking bar (4), moving knife (5) and stationary knife (6), described
Motor (1) is connected with eccentric wheel (2), and the moving knife (5) is connected with the rear end of the rocking bar (4), the moving knife (5) and institute
State stationary knife (6) to be oppositely arranged, it is characterised in that also including multi-directional ball (3), the eccentric shaft (2a) of the eccentric wheel (2), which is slided, to be worn
Be located in the multi-directional ball (3) and can relatively described multi-directional ball (3) motion, the front end of the rocking bar (4) has columnar part
There is cylindrical hole (4a1), the multi-directional ball (3) is slidably arranged in the cylindrical hole (4a1) in (4a), the columnar part (4a)
And can be rotated in the cylindrical hole (4a1).
2. trimming according to claim 1 knife group, it is characterised in that the multi-directional ball (3) is located at the cylindrical hole
In (4a1), offered on the side wall of the columnar part (4a) in strip and through the columnar part (4a) just to two side
Sliding groove (4a2), the sliding groove (4a2) is connected with the cylindrical hole (4a1), and the eccentric shaft (2a) is slided through described
Groove (4a2).
3. trimming according to claim 2 knife group, it is characterised in that the multi-directional ball (3) has the sliding eye run through,
The eccentric shaft (2a), which slides axially, to be located in the sliding eye and circumferentially rotates.
4. the trimming knife group according to claim 1 or 2 or 3, it is characterised in that described to shake also including air draught tool rest (7)
The middle part of bar (4) has articulated section (4b), and the articulated section (4b) is hinged on stationary knife (6) by axial screw (8), described dynamic
Knife (5), which is fixed on the rear end of rocking bar (4), the axial screw (8), is arranged with compression spring (9), the compression spring (9) one
End is resisted against on rocking bar (4), and the other end is resisted against the head of axial screw (8).
5. the trimming knife group according to claim 1 or 2 or 3, it is characterised in that described also including horizontal suction tool rest (16)
The middle part of rocking bar (4) has articulated section (4b), and the articulated section (4b) is hinged on horizontal suction tool rest (16) by axial screw (8)
On, crank (10) is provided between the rocking bar (4) and moving knife (5), the rear end of the rocking bar (4) has resigning breach (4c), institute
State crank (10) and be connected with rotating shaft one (11) and rotating shaft two (12), the rotating shaft one (11) and be fixedly connected with fixture block (13), institute
Fixture block (13) is stated to be stuck in the resigning breach (4c) and can slide with respect to resigning breach (4c), the rotating shaft two (12) and institute
State rotating shaft one (11) perpendicular, the rotating shaft two (12) is connected through the stationary knife (6) with moving knife (5), the rotating shaft two (12)
On be arranged with compression spring (9), described compression spring (9) one end is resisted against on stationary knife (6), and the other end is resisted against crank (10)
On.
6. trimming according to claim 5 knife group, it is characterised in that also including support base (15) and moving knife seat (14),
The stationary knife (6) is fixed on support base (15), and the moving knife (5) is fixed on moving knife seat (14), and the rotating shaft two (12) is worn
The support base (15) is crossed to be fixed on moving knife seat (14), the two ends of the compression spring (9) bear against in crank (10) and
On support base (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720292695.4U CN206599663U (en) | 2017-03-23 | 2017-03-23 | A kind of trimming knife group |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720292695.4U CN206599663U (en) | 2017-03-23 | 2017-03-23 | A kind of trimming knife group |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206599663U true CN206599663U (en) | 2017-10-31 |
Family
ID=60145687
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720292695.4U Active CN206599663U (en) | 2017-03-23 | 2017-03-23 | A kind of trimming knife group |
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| Country | Link |
|---|---|
| CN (1) | CN206599663U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108486782A (en) * | 2018-05-25 | 2018-09-04 | 吴江市新科缝制设备有限公司 | A kind of use in sewing machine the end of a thread Scissoring device |
-
2017
- 2017-03-23 CN CN201720292695.4U patent/CN206599663U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108486782A (en) * | 2018-05-25 | 2018-09-04 | 吴江市新科缝制设备有限公司 | A kind of use in sewing machine the end of a thread Scissoring device |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 318014 No. 1008, east section of Donghai Avenue, Sanjia, Jiaojiang District, Taizhou City, Zhejiang Province Patentee after: Jack Technology Co.,Ltd. Address before: 318010 No. 15 Airport South Road, Jiaojiang District, Zhejiang, Taizhou Patentee before: JACK SEWING MACHINE Co.,Ltd. |