CN209722459U - A kind of lower tugboat synchronization feeding structure of sewing machine - Google Patents
A kind of lower tugboat synchronization feeding structure of sewing machine Download PDFInfo
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- CN209722459U CN209722459U CN201920395478.7U CN201920395478U CN209722459U CN 209722459 U CN209722459 U CN 209722459U CN 201920395478 U CN201920395478 U CN 201920395478U CN 209722459 U CN209722459 U CN 209722459U
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- tugboat
- feeding structure
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Abstract
The utility model provides a kind of synchronous feeding structure of lower tugboat of sewing machine, belongs to clothes manufacturing equipment technical field.The technical problems such as the feeding structure that it solves existing sewing machine is not convenient enough, stablizes.This sewing machine includes main shaft, the synchronous feeding structure of lower tugboat includes tugboat axis and is set on tugboat axis the lower tugboat that can be one-directionally rotated, the synchronous feeding structure of lower tugboat further includes curved needle shaft, and curved needle shaft is arranged with main shaft parallel interval and is connected between the two by eccentric wheel assembly；The end of curved needle shaft is installed with swing connecting bar one, and swing connecting bar two is installed on tugboat axis, is connected between swing connecting bar one and swing connecting bar two by connecting rod.On the basis of original upper tugboat granny rag lower tugboat granny rag is arranged, to realize upper tugboat granny rag synchronous with lower tugboat, to ensure when sewing multilayer sewing, sewing does not misplace, do not rise in the synchronous feeding structure of lower tugboat in the utility model.And structure is simple, installs and easy to adjust.
Description
Technical field
The utility model belongs to clothes manufacturing equipment technical field, is related to a kind of sewing machine, especially a kind of sewing machine
The synchronous feeding structure of lower tugboat.
Background technique
Sewing machine is formed one or more stitchings on sewing, is made one or more layers seam with one or more sewing thread
The machine that material interweaves or unites by a seam.Fabrics and leather, plastics, the paper such as function of sewing sewing cotton, fiber crops, silk, hair, staple fibre
Equal products, the stitching neat appearance stitched out, it is smooth securely, sewing velocity is fast, uses simplicity.Conventional sewing machine feeding style is to send
Cloth tooth feeding, this feeding style work feed limited strength, especially with the sewing of special material, work feed is more painstaking, performance
It is too small for needle tracking.For this purpose, Chinese patent discloses a kind of rear tug device [application publication number CN106676764A], including work feed
Axis, cloth pushing shaft are connect by lower crank and connecting rod with upper crank, and upper crank is fixed on mop axis, are additionally provided on mop axis solid
Determine frame and adjust crank, adjusts crank and be fixedly connected with mop axis, fixed frame and the energy relative motion of mop axis, on adjusting crank
Be provided with strip-shaped hole, one end of wheel carrier drawn to be hinged in strip-shaped hole, draw wheel carrier the other end and tugboat crank it is long-armed hinged, drag
Wheel crank is hinged with fixed frame, the tugboat after tugboat crank is provided with, and adjusts the position for drawing wheel carrier in the strip-shaped hole for adjusting crank
Set the adjusting for reaching and changing the action length realization for adjusting crank to rear dragging wheel speed.Although carrying out work feed by rear tugboat has
The advantages that easy to operate, reliable, but in sewing manipulation, due to only upper tugboat granny rag, cause in sewing multilayer sewing
When upper and lower layer sewing dislocation frequent occurrence, phenomena such as sewing rises, influence product quality.
Chinese patent (publication number: CN107805889A, publication date: 2018-03-16), which discloses a kind of lower tugboat and synchronizes, to be sent
Expect structure, is dragged under including the shaft parallel with upper tugboat that is arranged in sewing machine table and being coaxially set in shaft
Wheel, lower tugboat are located at the underface of upper tugboat and are oppositely arranged with upper tugboat, which is characterized in that swing rod is fixed in shaft,
The transmission component for driving swing rod to swing when the shaft rotates, shaft and lower tugboat are equipped between swing rod and the main shaft of sewing machine
Between be equipped with the one way component that one-directionally rotates always for limiting lower tugboat when swing rod is swung；Transmission component includes coaxial fixed
Spindle nose connector sleeve, eccentric be fixed on the articulated shaft one parallel with main shaft of connector sleeve end, be fixed on swing rod
The articulated shaft two parallel with articulated shaft one and with the vertically disposed connecting rod of articulated shaft one, one end of the connecting rod is set in
On articulated shaft one, the other end of the connecting rod is set on articulated shaft two.
Mop feeding is carried out in such a way that upper tugboat and lower tugboat combine in above patent document；But in the structure under
Tugboat is driven using sliding block, sliding slot eccentric type structure, and structure is complicated, and installation and adjusting are not convenient enough.
Summary of the invention
The utility model aiming at the above problems existing in the prior art, provides a kind of synchronous feeding of lower tugboat of sewing machine
Structure, the technical problem to be solved by the utility model is to how to provide, a kind of precision is low, structure is simple, installation and adjusting side
Just the synchronous feeding structure of lower tugboat.
The purpose of this utility model can be realized by the following technical scheme:
A kind of lower tugboat synchronization feeding structure of sewing machine, sewing machine includes main shaft, and the lower tugboat synchronizes feeding structure
Including tugboat axis and it is set in the lower tugboat that can be one-directionally rotated on the tugboat axis, which is characterized in that the lower tugboat is synchronous
Feeding structure further includes curved needle shaft, and the curved needle shaft and the main shaft parallel interval are arranged and pass through eccentric wheel assembly between the two
It is connected；The end of the curved needle shaft is installed with swing connecting bar one, and swing connecting bar two, the swing are installed on the tugboat axis
It is connected between connecting rod one and the swing connecting bar two by connecting rod.
The principle is as follows: lower tugboat is arranged on the tugboat axis in sewing machine table, and lower tugboat is parallel with upper tugboat, under
Tugboat is located at the underface of upper tugboat and is oppositely arranged with upper tugboat, and the highest point of lower tugboat is not less than the upper table of workbench
Face, when needing feeding, under the action of transmission component under tugboat one-directionally rotate.When the shaft rotates, pass through eccentric wheel assembly band
Dynamic curved needle shaft drives swing connecting bar one to swing around main axis, curved needle shaft, and swing connecting bar drives the company of swing by connecting rod again and again
Two swing of bar, and then it is converted into the rotary motion of tugboat axis, tugboat unidirectionally revolves under the rotational movement of last tugboat axis
Transhipment is dynamic, and lower tugboat matches common realization mop feeding with upper tugboat.
The synchronous feeding structure of lower tugboat in the utility model is arranged lower tugboat and draws on the basis of original upper tugboat granny rag
Cloth, so that upper tugboat granny rag synchronous with lower tugboat is realized, to ensure that sewing does not misplace, do not rise when sewing multilayer sewing；Together
When this feeding structure use link-type bias traditional structure, simpler, precision is lower, installation and adjust it is easier.
In the synchronous feeding structure of lower tugboat of above-mentioned sewing machine, the eccentric wheel assembly includes described in bias is installed in
Eccentric cam on main shaft and the eccentric ratio being set on the eccentric cam outer peripheral surface are installed with song on the curved needle shaft
Handle, the outer end of the crank and the outer end of the eccentric ratio are hinged.
In the synchronous feeding structure of lower tugboat of above-mentioned sewing machine, the connecting rod includes the connecting screw positioned at middle part
And it is screwed onto the connector at the connecting screw both ends, being also bolted on the connecting screw can be by the connector locking
Locking nut.
In the synchronous feeding structure of lower tugboat of above-mentioned sewing machine, one end of the swing connecting bar one is connected in described curved
On needle shaft, the other end extends along the curved needle shaft radial direction and the end is also provided with the waist of the length direction along swing connecting bar one
Type hole one, one end of the connecting rod have the ball pin one being plugged in the waist-shaped hole one and are screwed onto consolidating in ball pin one
Determine nut one.
In the synchronous feeding structure of lower tugboat of above-mentioned sewing machine, one end of the swing connecting bar two is connected in described drag
On wheel shaft, the other end extends along the tugboat axis radial direction and the end is also provided with the waist of the length direction along swing connecting bar two
Type hole two, the other end of the connecting rod have the ball pin two being plugged in the waist-shaped hole two and are screwed onto ball pin two
Fixture nut two.
When adjusting position of the ball pin one in waist-shaped hole one, the swing angle of adjustable swing connecting bar one, final shadow
Ring the granny rag amount of lower tugboat；And when adjusting position of the ball pin two in waist-shaped hole two, swing connecting bar two can also be directly affected
Swing angle, it is final under the influence of tugboat granny rag amount；The length of connecting rod can also be fitted in the technical program simultaneously
Answering property adjusts, and adjustability and versatility are high.
In the synchronous feeding structure of lower tugboat of above-mentioned sewing machine, it is arranged with unilateral bearing on the tugboat axis, it is described
Lower tugboat is set on the unilateral bearing, is had on the outer peripheral surface of the lower tugboat along its axial teeth；The swing connects
Bar two is connected in the end of the tugboat axis.Further, lower tugboat be in long tubular, the quantity of unilateral bearing can be it is multiple and
Interval setting.When swing connecting bar two swings back and forth, only unidirectional swing is able to drive lower tugboat rotation, and other direction is that revolution is empty
Carrying turns, and guarantees being normally carried out for feeding.
Compared with prior art, having the advantage that in the utility model
1, lower tugboat is arranged on the basis of original upper tugboat granny rag in the synchronous feeding structure of the lower tugboat in the utility model
Granny rag, so that upper tugboat granny rag synchronous with lower tugboat is realized, to ensure that sewing does not misplace, do not rise when sewing multilayer sewing.
2, the feeding structure in the utility model uses link-type bias traditional structure, and simpler, precision is lower, peace
Dress and adjusting are easier.
3, the synchronous feeding structure of the lower tugboat in the utility model can be to the angle of oscillation of swing connecting bar one, swing connecting bar two
The length of degree and connecting rod is adaptively adjusted, and adjustability and versatility are high.
Detailed description of the invention
Fig. 1 is that this lower tugboat synchronous feeding structure installs and uses structural schematic diagram.
Fig. 2 is the schematic perspective view that this lower tugboat synchronizes feeding structure.
Fig. 3 is the partial enlargement structural representation in Fig. 2 at A.
In figure, 1, main shaft；2, tugboat axis；3, lower tugboat；31, teeth；4, curved needle shaft；5, eccentric wheel assembly；51, eccentric convex
Wheel；52, eccentric ratio；53, crank；6, swing connecting bar one；61, waist-shaped hole one；7, swing connecting bar two；71, waist-shaped hole two；8, even
Extension bar；81, connecting screw；82, connector；83, locking nut；9, ball pin one；10, ball pin two；11, fixture nut one；12, solid
Determine nut two；13, unilateral bearing.
Specific embodiment
It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these examples.
As shown in Figure 1, Figure 2 and Figure 3, this sewing machine includes main shaft 1, and it includes tugboat axis 2 that this lower tugboat, which synchronizes feeding structure,
Be set on tugboat axis 2 the lower tugboat 3 that can be one-directionally rotated, the synchronous feeding structure of lower tugboat further includes curved needle shaft 4, curved needle shaft
4 are arranged with 1 parallel interval of main shaft and are connected between the two by eccentric wheel assembly 5；The end of curved needle shaft 4 is installed with swing and connects
Bar 1 is installed with swing connecting bar 27 on tugboat axis 2, is connected between swing connecting bar 1 and swing connecting bar 27 by connecting rod 8
It connects.Specifically, unilateral bearing 13 is arranged on tugboat axis 2, lower tugboat 3 is set on unilateral bearing 13, the periphery of lower tugboat 3
Have on face along its axial teeth 31；Swing connecting bar 27 is connected in the end of tugboat axis 2.Further, in the present embodiment partially
Heart wheel assembly 5 includes the eccentric eccentric cam 51 being installed on main shaft 1 and the bias being set on 51 outer peripheral surface of eccentric cam
Connecting rod 52 is installed with crank 53 on curved needle shaft 4, and the outer end of crank 53 and the outer end of eccentric ratio 52 are hinged.
Lower tugboat 3 is arranged on the tugboat axis 2 in sewing machine table, and lower tugboat 3 is parallel with upper tugboat, 3, lower tugboat
It is oppositely arranged at the underface of upper tugboat and with upper tugboat, the highest point of lower tugboat 3 is not less than the upper surface of workbench, needs
When feeding, under the action of transmission component under tugboat 3 one-directionally rotate.When main shaft 1 rotates, driven by eccentric wheel assembly 5 curved
Needle shaft 4 is rotated around main shaft 1, and curved needle shaft 4 drives swing connecting bar 1 to swing, and swing connecting bar 1 is driven by connecting rod 8 swing again
27 swing of connecting rod, and then it is converted into the rotary motion of tugboat axis 2, tugboat 3 under the rotational movement of last tugboat axis 2
Unidirectional rotary motion, lower tugboat 3 match common realization mop feeding with upper tugboat.This lower tugboat synchronizes feeding structure original
On the basis of upper tugboat granny rag, lower 3 granny rag of tugboat is set, so that upper tugboat granny rag synchronous with lower tugboat 3 is realized, to ensure stitching
When multilayer sewing processed, sewing does not misplace, does not rise；This feeding structure uses link-type bias traditional structure simultaneously, simpler,
Precision is lower, and installation and adjusting are easier.
As shown in figure 3, connecting rod 8 includes the connecting screw 81 for being located at middle part and the company for being screwed onto 81 both ends of connecting screw
Connector 82, being also bolted on connecting screw 81 can be by the locking nut 83 of 82 locking of connector；One end of swing connecting bar 1 is solid
It is connected on curved needle shaft 4, the other end extends along 4 radial direction of curved needle shaft and the end is also provided with along the length side of swing connecting bar 1
To waist-shaped hole 1, one end of connecting rod 8 has the ball pin 1 being plugged in waist-shaped hole 1 and is screwed onto ball pin 1
On fixture nut 1；One end of swing connecting bar 27 is connected on tugboat axis 2, and the other end extends along 2 radial direction of tugboat axis
And the end is also provided with the waist-shaped hole 2 71 along the length direction of swing connecting bar 27, the other end of connecting rod 8, which has, is plugged in waist
Ball pin 2 10 in type hole 2 71 and the fixture nut 2 12 being screwed onto ball pin 2 10.When adjusting ball pin 1 is in waist-shaped hole
When position in one 61, the swing angle of adjustable swing connecting bar 1, it is final under the influence of tugboat 3 granny rag amount；And when adjusting
When position of the ball pin 2 10 in waist-shaped hole 2 71, the swing angle of swing connecting bar 27 can also be directly affected, under the influence of final
The granny rag amount of tugboat 3；The length of connecting rod 8 can also be adaptively adjusted in the technical program simultaneously, adjustability and logical
With property height.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Although 1, main shaft is used more herein；2, tugboat axis；3, lower tugboat；31, teeth；4, curved needle shaft；5, eccentric
Wheel assembly；51, eccentric cam；52, eccentric ratio；53, crank；6, swing connecting bar one；61, waist-shaped hole one；7, swing connecting bar two；
71, waist-shaped hole two；8, connecting rod；81, connecting screw；82, connector；83, locking nut；9, ball pin one；10, ball pin two；11,
Fixture nut one；12, fixture nut two；13, the terms such as unilateral bearing, but it does not exclude the possibility of using other terms.Make
It is used for the purpose of being more convenient to describe and explain the essence of the utility model with these terms；It is construed as any attached
The limitation added is all contrary to the spirit of the present invention.
Claims (6)
1. a kind of synchronous feeding structure of the lower tugboat of sewing machine, sewing machine includes main shaft (1), and the lower tugboat synchronizes feeding structure
Including tugboat axis (2) and it is set in the lower tugboat (3) that can be one-directionally rotated on the tugboat axis (2), which is characterized in that under described
The synchronous feeding structure of tugboat further includes curved needle shaft (4), and the curved needle shaft (4) is arranged with the main shaft (1) parallel interval and the two
Between be connected by eccentric wheel assembly (5)；The end of the curved needle shaft (4) is installed with swing connecting bar one (6), the tugboat axis
(2) it is installed with swing connecting bar two (7) on, passes through connecting rod between the swing connecting bar one (6) and the swing connecting bar two (7)
(8) it is connected.
2. the synchronous feeding structure of the lower tugboat of sewing machine according to claim 1, which is characterized in that the eccentric wheel assembly
(5) include eccentric cam (51) and be set in the eccentric cam (51) outer peripheral surface that bias is installed on the main shaft (1)
On eccentric ratio (52), be installed with crank (53) on the curved needle shaft (4), the outer end of the crank (53) and it is described it is eccentric even
The outer end of bar (52) is hinged.
3. the synchronous feeding structure of the lower tugboat of sewing machine according to claim 1 or 2, which is characterized in that the connecting rod
(8) include positioned at middle part connecting screw (81) and be screwed onto the connector (82) at the connecting screw (81) both ends, it is described
Also being bolted on connecting screw (81) can be by the locking nut (83) of the connector (82) locking.
4. the synchronous feeding structure of the lower tugboat of sewing machine according to claim 3, which is characterized in that the swing connecting bar one
(6) one end is connected on the curved needle shaft (4), and the other end extends along the curved needle shaft (4) radial direction and the end also opens up
There is the waist-shaped hole one (61) along the length direction of swing connecting bar one (6), one end of the connecting rod (8), which has, is plugged in the waist
Ball pin one (9) in type hole one (61) and the fixture nut one (11) being screwed onto ball pin one (9).
5. the synchronous feeding structure of the lower tugboat of sewing machine according to claim 4, which is characterized in that the swing connecting bar two
(7) one end is connected on the tugboat axis (2), and the other end extends along tugboat axis (2) radial direction and the end also opens up
There is the waist-shaped hole two (71) along the length direction of swing connecting bar two (7), the other end of the connecting rod (8) is described with being plugged in
Ball pin two (10) in waist-shaped hole two (71) and the fixture nut two (12) being screwed onto ball pin two (10).
6. the synchronous feeding structure of the lower tugboat of sewing machine according to claim 1 or 2, which is characterized in that the tugboat axis
(2) it is arranged on unilateral bearing (13), the lower tugboat (3) is set on the unilateral bearing (13), the lower tugboat (3)
Have on outer peripheral surface along its axial teeth (31)；The swing connecting bar two (7) is connected in the end of the tugboat axis (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920395478.7U CN209722459U (en) | 2019-03-26 | 2019-03-26 | A kind of lower tugboat synchronization feeding structure of sewing machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920395478.7U CN209722459U (en) | 2019-03-26 | 2019-03-26 | A kind of lower tugboat synchronization feeding structure of sewing machine |
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| CN209722459U true CN209722459U (en) | 2019-12-03 |
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| CN201920395478.7U Active CN209722459U (en) | 2019-03-26 | 2019-03-26 | A kind of lower tugboat synchronization feeding structure of sewing machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111534943A (en) * | 2020-05-15 | 2020-08-14 | 拓卡奔马机电科技有限公司 | Rear tug driving structure of wrist bending machine |
-
2019
- 2019-03-26 CN CN201920395478.7U patent/CN209722459U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111534943A (en) * | 2020-05-15 | 2020-08-14 | 拓卡奔马机电科技有限公司 | Rear tug driving structure of wrist bending machine |
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| CP03 | Change of name, title or address |
Address after: 318000 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. |