CN109972308A - A kind of needle bar stroke adjustment structure and its sewing machine and stroke adjustment method - Google Patents
A kind of needle bar stroke adjustment structure and its sewing machine and stroke adjustment method Download PDFInfo
- Publication number
- CN109972308A CN109972308A CN201910291267.3A CN201910291267A CN109972308A CN 109972308 A CN109972308 A CN 109972308A CN 201910291267 A CN201910291267 A CN 201910291267A CN 109972308 A CN109972308 A CN 109972308A
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- China
- Prior art keywords
- needle bar
- shank
- eccentric wheel
- locating piece
- connecting rod
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Classifications
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B55/00—Needle holders; Needle bars
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B55/00—Needle holders; Needle bars
- D05B55/14—Needle-bar drives
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B71/00—Lubricating or cooling devices
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The invention discloses a kind of needle bar stroke adjustment structure and its sewing machine and stroke adjustment method, the trip adjustment structure includes needle bar crank, shank connecting rod, shank pin, eccentric wheel and locating piece.Needle bar crank is rotatably installed on the casing of sewing machine, and one end of shank connecting rod and the shank of sewing machine are rotatablely connected, and the other end is rotatably installed on needle bar crank and opens up circular mounting hole.Shank pin is inserted on needle bar crank, opens up taper hole on the side wall of shank pin.Eccentric wheel set is fitted into mounting hole, and shank pin is set in the eccentric orfice of eccentric wheel.One end of locating piece passes radially through eccentric wheel and is inserted in taper hole, and the other end is located within the outer edge of eccentric wheel.On the one hand the present invention can avoid the damage to device, on the other hand can easily be accommodated, facilitate operation without pulling out related device, improve the efficiency that needle bar stroke is adjusted.Moreover, in the present invention be not used cam pin, reduce the difficulty of processing and processing cost of part, can hoisting machine thin and thick adaptability.
Description
Technical field
The present invention relates to a kind of needle bar stroke adjustment structure of textile technology field more particularly to a kind of sewing machines, also relate to
And a kind of needle bar stroke adjusting method.
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.
The existing flat seaming machine adjusted about needle bar stroke, stroke adjustment mode are generally all more complicated.Wherein, compare
Typical patent such as Publication No. CN1303276C, patent name are the patent for changing the device of needle rod range of sewing machine.At this
When sewing machine carries out stroke adjustment, head left cover of dismantling is first had to, two screws of the needle bar crank that then comes loose use screw after
Cam pin is pulled out, then is rotated 180 degree with screwdriver by knife, and is advanced it into, and needle bar crank spiral shell is finally successively locked
Nail installs head left cover.It can be seen that the adjusting technique of the sewing machine is extremely complex, and since case head space is limited,
It is relatively difficult pulling out cam pin and being rotated 180 degree, need very skilled personnel that can just be rapidly completed.Therefore, existing
With the presence of needle rod range of sewing machine regulating device to adjust technique cumbersome, adjust the big problem of difficulty.
Summary of the invention
For problem of the prior art, the present invention provides a kind of needle bar stroke adjustment structure and its sewing machine and stroke tune
Section method, solves existing needle rod range of sewing machine regulating device and exists and adjust that technique is cumbersome, adjusts the big problem of difficulty.
The present invention is implemented with the following technical solutions: a kind of needle bar stroke adjustment structure is used to adjust the needle of sewing machine
The throw of lever comprising:
Needle bar crank is rotatably installed on the casing of the sewing machine；
The shank of shank connecting rod, one end and the sewing machine is rotatablely connected, and the other end is rotatably installed on needle bar crank；
The other end of shank connecting rod opens up circular mounting hole；
Shank pin, is inserted and secured on needle bar crank, and axial axial parallel with needle bar crank；The side of shank pin
At least one taper hole is opened up on wall；
Eccentric wheel, set are fitted into mounting hole, and shank pin is set in the eccentric orfice of eccentric wheel；And
Locating piece, one end pass radially through eccentric wheel and are inserted in the taper hole, and the other end is located at the outside of eccentric wheel
Within edge；
Wherein, when adjusting the needle bar stroke of the sewing machine, locating piece is moved radially outward along eccentric wheel and is detached from institute
Taper hole is stated, limits the other end of locating piece mutually with shank connecting rod, shank connecting rod is rotated by locating piece band movable eccentric wheel, to change
Become the distance between center line and the center line of needle bar crank of mounting hole.
As a further improvement of the foregoing solution, shank connecting rod and eccentric wheel are hinged, and are carried out by shank pin and gasket
Positioning, gasket are arranged between shank connecting rod and eccentric wheel.
As a further improvement of the foregoing solution, eccentric wheel radially opens up multiple Chu Nakong, and the storage is received and set in hole
Oily cotton is set, oily cotton is for fuel-displaced to be lubricated between shank connecting rod and eccentric wheel.
As a further improvement of the foregoing solution, the quantity of the taper hole is two, and the axial direction of two taper holes is parallel,
And perpendicular to the axial direction of shank pin.
As a further improvement of the foregoing solution, the needle bar stroke adjustment structure is set to the inside of casing.
As a further improvement of the foregoing solution, casing opens up oil seal, and the oil sealing close to the position of needle bar crank
Sealing element is equipped in mouthful.
As a further improvement of the foregoing solution, shank pin is fixed on needle bar crank by connector, the connector
It is screw with locating piece.
As a further improvement of the foregoing solution, there is groove structure on the other end of shank connecting rod, adjusting the seam
Thread machine needle bar stroke when, the other end of locating piece is limited in the groove of the groove structure.
Needle bar stroke adjustment structure of the invention can be made when adjusting the needle bar stroke of sewing machine by running fix part
Locating piece is separated with shank pin, and the connection relationship between eccentric wheel and shank pin releases at this time, and eccentric wheel can be with respect to shank pin
Rotation.In this way, eccentric wheel rotation when, since the end sleeve of shank connecting rod is on eccentric wheel so that the center line of mounting hole with
The distance between center line of needle bar crank changes, so that center line of the shank connecting rod other end around needle bar crank
The radius of rotation changes therewith, and further changes the motion path of one end of shank connecting rod, realizes the needle to sewing machine
The adjusting of the throw of lever.
Wherein, during to needle bar stroke, adjusting personnel only need running fix part, without prizing related device
Out, it on the one hand can avoid the damage to device, on the other hand can be easily adjusted, facilitate operation, improve the effect that needle bar stroke is adjusted
Rate.Moreover, cam pin is not used in the present invention, the difficulty of processing and processing cost of part can be reduced, and can hoisting machine
The adaptability of thin and thick.
The present invention also provides a kind of sewing machines convenient for adjusting needle bar stroke comprising casing, shank and stroke tune
Regulating device；The shank and the stroke adjusting device are installed on casing, and the stroke adjusting device is described for adjusting
The amplitude of shank lifting；The stroke adjusting device is above-mentioned any needle bar stroke adjustment structure；Needle bar crank rotation
It is mounted on casing, one end of shank connecting rod and the shank are rotatablely connected；
Wherein, when adjusting the stroke of the shank, locating piece is moved radially outward along eccentric wheel and is detached from the taper hole,
Limit the other end of locating piece mutually with shank connecting rod, shank connecting rod is rotated by locating piece band movable eccentric wheel, to change installation
The distance between the center line and the center line of needle bar crank in hole.
The present invention also provides a kind of needle bar stroke adjusting methods, are applied to above-mentioned any needle bar stroke and adjust
In structure；The needle bar stroke adjusting method the following steps are included:
It is moved radially outward locating piece along eccentric wheel, limits the other end of locating piece mutually with shank connecting rod；
Band movable eccentric wheel rotates, and changes the distance between the center line of mounting hole and the center line of needle bar crank；
After the angle for adjusting locating piece, one end of locating piece is inserted in the taper hole, keeps shank pin and eccentric wheel opposite
It is fixed.
Detailed description of the invention
Fig. 1 is the broken away view of the needle bar stroke adjustment structure of the embodiment of the present invention 1；
Fig. 2 be needle bar stroke adjustment structure in Fig. 1 from high-stroke tune bottom row journey when front view；
Fig. 3 be needle bar stroke adjustment structure in Fig. 1 from bottom row journey tune high-stroke when front view；
Fig. 4 is the schematic diagram when locating piece of the needle bar stroke adjustment structure in Fig. 2 is mutually limited with shank connecting rod；
Fig. 5 is the schematic diagram when locating piece of the needle bar stroke adjustment structure in Fig. 3 is mutually limited with shank connecting rod.
Main element symbol description
| Casing | 1 |
| Needle bar crank | 2 |
| Shank connecting rod | 3 |
| Shank pin | 4 |
| Eccentric wheel | 5 |
| Locating piece | 6 |
| Gasket | 7 |
| Sealing element | 8 |
| Nose cover | 9 |
| Oily cotton | 10 |
| Inner circle structure | 21 |
| Mounting structure | 22 |
| Outer ring structure | 23 |
| Mounting hole | 31 |
| Location hole | 221 |
The present invention is described in further detail for the above main element symbol description combination the drawings and the specific embodiments.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention more comprehensible, below in conjunction with attached drawing and specific embodiment party
Formula, the present invention is further described in detail.It should be understood that the specific embodiments described herein are only to solve
The present invention is released, and the scope of protection of the present invention is not limited.
It should be noted that it can directly on the other element when element is referred to as " being fixed on " another element
Or there may also be elements placed in the middle.When an element is considered as " connection " another element, it, which can be, is directly connected to
To another element or it may be simultaneously present centering elements.Term as used herein " vertical ", " horizontal ", " left side ",
" right side " and similar statement for illustrative purposes only, are not meant to be the only embodiment.
Unless otherwise defined, all technical and scientific terms used herein and belong to technical field of the invention
The normally understood meaning of technical staff is identical.Term as used herein in the specification of the present invention is intended merely to description tool
The purpose of the embodiment of body, it is not intended that in the limitation present invention.
Embodiment 1
Fig. 1-5 is please referred to, a kind of needle bar stroke adjustment structure is present embodiments provided, is used to adjust the shank of sewing machine
Stroke, and including needle bar crank 2, shank connecting rod 3, shank pin 4, eccentric wheel 5 and locating piece 6, it may also include gasket 7 and sealing
Part 8.In the present embodiment, which is arranged in the inside of the casing 1 of sewing machine, and is the sewing machine
Structure.Needle bar stroke adjustment structure is in addition to that can adjust needle bar stroke, additionally it is possible to as the device that driving shank moves up and down, make
Shank carries out sewing work.
Needle bar crank 2 is rotatably installed on the casing 1 of sewing machine, and can be driven by the driving structure of sewing machine to it
It is dynamic, to be rotated.The center line of needle bar crank 2 and the shank of sewing machine are vertical, i.e., shank is set along the radial direction of needle bar crank 2
It sets.In the present embodiment, needle bar crank 2 is rounded, and has the inner circle structure 21 of coaxial arrangement, mounting structure 22 and outer
Ring structure 23.Inner circle structure 21 is axle construction, and is directly rotatably installed in the inside of casing 1.22 sets of mounting structure in inner circle
Outside structure 21, and it can also be integrally formed with inner circle structure 21.Multiple location holes 221, Duo Geding are provided on mounting structure 22
The axial direction in position hole 221 is axial parallel with inner circle structure 21.23 sets of outer ring structure outside mounting structure 22, can also be with mounting structure
22 are integrally formed.Certainly, existing other structures can also be used in needle bar crank 2, facilitate the assembling and use of structure.
One end of shank connecting rod 3 and the shank of sewing machine are rotatablely connected, and the other end is rotatably installed on needle bar crank 2, and
And the other end of shank connecting rod 3 opens up circular mounting hole 31.Shank connecting rod 3 can be carried out hingedly with eccentric wheel 5 by hinge, and be led to
It crosses shank pin 4 and gasket 7 is positioned, gasket 7 is arranged between shank connecting rod 3 and eccentric wheel 5.What needs to be explained here is that
There is groove structure on the other end of the shank connecting rod 3 of the present embodiment.The groove of groove structure is set along the radial direction of mounting hole 31
It sets, and the groove width of groove needs the diameter greater than 6 other end of locating piece.3 other end of shank connecting rod can be rounded, and diameter
It can be identical as the distance between outer ring structure 23 as inner circle structure 21.Certainly, existing link mechanism can be used in shank connecting rod 3,
Facilitate the assembling of the type selecting and adjustment structure of shank connecting rod 3.
Shank pin 4 is inserted and secured on needle bar crank 2, and axial axial parallel with needle bar crank 2.Shank pin 4
At least one taper hole is opened up on side wall, in the present embodiment, the quantity of taper hole is two, and the axial direction of two taper holes is parallel, and
Perpendicular to the axial direction of shank pin 4.Shank pin 4 can be fixed on needle bar crank 2 by connector, and connector is screw.?
When specific installation, the jack two that axially disposed jack one can be first opened up on needle bar crank 2 and is disposed radially, and jack
One and jack two communicate.Shank pin 4 is first inserted into jack one by installation personnel, then connector is passed through jack two and is inserted in needle
In lever pin 4, so that shank pin 4 and needle bar crank 2 are relatively fixed.
5 sets of eccentric wheel are fitted into mounting hole 31, and shank pin 4 is set in the eccentric orfice of eccentric wheel 5.In the present embodiment
In, eccentric wheel 5 radially opens up multiple Chu Nakong, and oily cotton 10 is arranged in Chu Nakong, and oily cotton 10 is for fuel-displaced to connect to shank
It is lubricated between bar 3 and eccentric wheel 5.A part that oily cotton 10 can be used as eccentric wheel 5 is configured, and can also be separately provided and be made
For a kind of structure of needle bar stroke adjustment structure.And in the present embodiment, oil is opened up close to the position of needle bar crank 2 in casing 1
Sealing opens up oil seal on nose cover 9, and is equipped with sealing element 8 in oil seal, in the present embodiment, the quantity of oil seal
It is preferably four.Therefore when needing to refuel to oily cotton 10, operator can first take out sealing element 8, then pass through oil seal to storage
It receives and adds grease in hole, in order to lubricate always between shank connecting rod 3 and eccentric wheel 5, reduce frictional force, and improve sewing
The working efficiency of machine.
One end of locating piece 6 passes radially through eccentric wheel 5 and is inserted in taper hole, and the other end is located at the outer edge of eccentric wheel 5
Within.Locating piece 6 is screw, can select screw of the same race that other screws also can be selected certainly in order to assemble with connector.
The length of locating piece 6 should be according to the size of eccentric wheel 5, and thickness of the length at least than eccentric wheel 5 is big, to guarantee across inclined
The side wall of heart wheel 5.
Wherein, when adjusting the needle bar stroke of sewing machine, locating piece 6 is moved radially outward by operator along eccentric wheel 5
And it is detached from taper hole, limit the other end of locating piece 6 with 3 phase of shank connecting rod, shank connecting rod 3 is by locating piece 6 with movable eccentric wheel 5
Rotation, to change the center line of mounting hole 31 and the distance between the center line of needle bar crank 2.Specifically, in above-mentioned adjusting
In the process, the other end of locating piece 6 is limited in the groove of groove structure.
In shank high-stroke, the center of the thicker part alignment needle bar crank 2 of eccentric wheel 5, at this time by 2 turns of needle bar crank
When to the position of such as Fig. 2, locating piece 6 is eased out with screwdriver come part, guarantees the conehead part of locating piece 6 by sealing element 8 of dismantling
It is detached from the taper hole of shank pin 4, then rotates needle bar crank 2, the groove structure of shank connecting rod 3 can collide with locating piece 6 at this time, and
Band movable eccentric wheel 5 rotates, and when needle bar crank 2 rotates 180 degree, i.e., position shown in fig. 3, eccentric wheel 5 also can rotate summary
Lower than the angle of 180 degree, locating piece 6 is slightly then adjusted the angle to locking with screwdriver, and guarantee the outside of locating piece 6
Edge is no more than the outer edge of eccentric wheel 5, is then sealed oil seal by sealing element 8.
To sum up, compared to existing needle bar stroke adjusting device, the needle bar stroke adjustment structure of the present embodiment has following
The utility model has the advantages that
The needle bar stroke adjustment structure of the present embodiment can pass through running fix part when adjusting the needle bar stroke of sewing machine
6, separate locating piece 6 with shank pin 4, and the connection relationship between eccentric wheel 5 and shank pin 4 releases at this time, eccentric wheel 5 can phase
Shank pin 4 is rotated.In this way, when eccentric wheel 5 rotates, since the end sleeve of shank connecting rod is on eccentric wheel 5, so that mounting hole
The distance between center line and the center line of needle bar crank 2 change so that 3 other end of shank connecting rod is around shank
The radius of the center line rotation of crank 2 changes therewith, and further changes the motion path of one end of shank connecting rod 3, real
Now to the adjusting of the needle bar stroke of sewing machine.
Wherein, during to needle bar stroke, adjusting personnel only need running fix part 6, are not necessarily to related device
It pulls out, on the one hand can avoid the damage to device, on the other hand can be easily adjusted, facilitate operation, improve what needle bar stroke was adjusted
Efficiency.Moreover, cam pin is not used in the present embodiment, the difficulty of processing and processing cost of part can be reduced, and can be promoted
The adaptability of machine thin and thick.
Embodiment 2
Present embodiments provide a kind of sewing machine convenient for adjusting needle bar stroke comprising casing 1, shank and stroke tune
Regulating device.In the present embodiment, stroke adjusting device is needle bar stroke adjustment structure described in embodiment 1.Shank and row
Journey regulating device is installed on casing 1, and stroke adjusting device is used to adjust the amplitude of shank lifting.The rotation peace of needle bar crank 2
On casing 1, one end of shank connecting rod 3 and shank are rotatablely connected.
Wherein, when adjusting the stroke of shank, locating piece 6 is moved radially outward and is detached from along eccentric wheel 5 by operator
Taper hole limits the other end of locating piece 6 with 3 phase of shank connecting rod, and shank connecting rod 3 is rotated by locating piece 6 with movable eccentric wheel 5,
To change the center line of mounting hole 31 and the distance between the center line of needle bar crank 2.
What needs to be explained here is that sewing machine provided in this embodiment may also include existing other structures, and both may be used
It can also be also a part of large-scale sewing device for by the electric sewer being driven by electricity as manually sewing machine
Structure.The advantages of the advantages of sewing machine of the present embodiment is with the needle bar stroke adjustment structure in embodiment 1 is identical, can be convenient for sewing
Machine carries out stroke adjustment, saves the materials of sewing machine.
Embodiment 3
A kind of needle bar stroke adjusting method is present embodiments provided, the needle bar stroke of application in embodiment 1 adjusts knot
In structure, the needle bar stroke adjusting method the following steps are included:
1, it is moved radially outward locating piece 6 along eccentric wheel 5, limits the other end of locating piece 6 with 3 phase of shank connecting rod；
2, band movable eccentric wheel 5 rotates, and changes the center line of mounting hole 31 and the distance between the center line of needle bar crank 2；
3, after the angle for adjusting locating piece 6, one end of locating piece 6 is inserted in taper hole, 5 phase of shank pin 4 and eccentric wheel is made
To fixation.
This needle bar stroke adjusting method of the present embodiment adjusts stroke conveniently, can accordingly reduce the operation of operator
It is required that so that non-technical personnel can also rapidly adjust the needle bar stroke of sewing machine.Meanwhile the trip adjusting method can also answer
Among other similar equipment, and it is not limited in sewing machine.
Each technical characteristic of embodiment described above can be combined arbitrarily, for simplicity of description, not to above-mentioned reality
It applies all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, all should be considered as described in this specification.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of needle bar stroke adjustment structure, is used to adjust the needle bar stroke of sewing machine comprising:
Needle bar crank (2) is rotatably installed on the casing (1) of the sewing machine；
The shank of shank connecting rod (3), one end and the sewing machine is rotatablely connected, and the other end is rotatably installed in needle bar crank (2)
On；
It is characterized in that, the other end of shank connecting rod (3) opens up circular mounting hole (31)；The needle bar stroke adjustment structure is also wrapped
It includes:
Shank pin (4) is inserted and secured on needle bar crank (2), and axial axial parallel with needle bar crank (2)；Shank
It sells and opens up at least one taper hole on the side wall of (4)；
Eccentric wheel (5), set are fitted into mounting hole (31), and shank pin (4) is set in the eccentric orfice of eccentric wheel (5)；And
Locating piece (6), one end pass radially through eccentric wheel (5) and are inserted in the taper hole, and the other end is located at eccentric wheel (5)
Within outer edge；
Wherein, when adjusting the needle bar stroke of the sewing machine, locating piece (6) is moved radially outward and is detached from along eccentric wheel (5)
The taper hole limits the other end of locating piece (6) mutually with shank connecting rod (3), and shank connecting rod (3) is driven by locating piece (6)
Eccentric wheel (5) rotation, to change the center line of mounting hole (31) and the distance between the center line of needle bar crank (2).
2. needle bar stroke adjustment structure as described in claim 1, which is characterized in that shank connecting rod (3) and eccentric wheel (5) are cut with scissors
It connects, and is positioned by shank pin (4) and gasket (7), gasket (7) is arranged between shank connecting rod (3) and eccentric wheel (5).
3. needle bar stroke adjustment structure as described in claim 1, which is characterized in that eccentric wheel (5) radially opens up multiple storages
Receive hole, and the storage is received and oily cotton (10) is arranged in hole, oily cotton (10) be used for it is fuel-displaced with to shank connecting rod (3) and eccentric wheel (5) it
Between be lubricated.
4. needle bar stroke adjustment structure as described in claim 1, which is characterized in that the quantity of the taper hole is two, two
The axial direction of the taper hole is parallel, and perpendicular to the axial direction of shank pin (4).
5. needle bar stroke adjustment structure as described in claim 1, which is characterized in that the needle bar stroke adjustment structure is set to
The inside of casing (1).
6. needle bar stroke adjustment structure as described in claim 1, which is characterized in that portion of the casing (1) close to needle bar crank (2)
Position opens up oil seal, and is equipped with sealing element (8) in the oil seal.
7. needle bar stroke adjustment structure as described in claim 1, which is characterized in that shank pin (4) is fixed on by connector
On needle bar crank (2), the connector and locating piece (6) are screw.
8. needle bar stroke adjustment structure as described in claim 1, which is characterized in that have on the other end of shank connecting rod (3)
Groove structure, when adjusting the needle bar stroke of the sewing machine, the other end of locating piece (6) is limited in the recessed of the groove structure
In slot.
9. a kind of sewing machine convenient for adjusting needle bar stroke comprising casing (1), shank and stroke adjusting device；The needle
Bar and the stroke adjusting device are installed on casing (1), and the stroke adjusting device is used to adjust the shank lifting
Amplitude；It is characterized in that, the stroke adjusting device is the needle bar stroke adjusting knot as described in any one of claim 1-8
Structure；Needle bar crank (2) is rotatably installed on casing (1), and one end of shank connecting rod (3) and the shank are rotatablely connected；
Wherein, when adjusting the stroke of the shank, locating piece (6) is moved radially outward along eccentric wheel (5) and is detached from the cone
Hole limits the other end of locating piece (6) mutually with shank connecting rod (3), and shank connecting rod (3) passes through locating piece (6) band movable eccentric wheel
(5) it rotates, to change the center line of mounting hole (31) and the distance between the center line of needle bar crank (2).
10. a kind of needle bar stroke adjusting method is applied to the needle bar stroke as described in any one of claim 1-8 and adjusts
In structure；It is characterized in that, the needle bar stroke adjusting method the following steps are included:
Locating piece (6) are moved radially outward along eccentric wheel (5), limit the other end of locating piece (6) mutually with shank connecting rod (3)；
Band movable eccentric wheel (5) rotates, and changes the center line of mounting hole (31) and the distance between the center line of needle bar crank (2)；
After the angle for adjusting locating piece (6), one end of locating piece (6) is inserted in the taper hole, shank pin (4) and eccentric wheel are made
(5) relatively fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910291267.3A CN109972308B (en) | 2019-04-11 | 2019-04-11 | Needle bar stroke adjusting structure, sewing machine with needle bar stroke adjusting structure and stroke adjusting method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910291267.3A CN109972308B (en) | 2019-04-11 | 2019-04-11 | Needle bar stroke adjusting structure, sewing machine with needle bar stroke adjusting structure and stroke adjusting method |
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| CN109972308A true CN109972308A (en) | 2019-07-05 |
| CN109972308B CN109972308B (en) | 2021-11-02 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110983662A (en) * | 2019-12-23 | 2020-04-10 | 拓卡奔马机电科技有限公司 | Cloth-needling mechanism and sewing equipment with same |
| WO2021064583A1 (en) * | 2019-10-01 | 2021-04-08 | Vi.Be.Mac. S.P.A. | Handling system for sewing machines |
| CN113186670A (en) * | 2021-03-23 | 2021-07-30 | 绍兴市晶远花型设计有限公司 | Embroidery machine driver |
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| CN208104725U (en) * | 2018-03-28 | 2018-11-16 | 浙江美机缝纫机有限公司 | A kind of mechanism of adjustable needle bar stroke |
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| WO2021064583A1 (en) * | 2019-10-01 | 2021-04-08 | Vi.Be.Mac. S.P.A. | Handling system for sewing machines |
| CN114502789A (en) * | 2019-10-01 | 2022-05-13 | 威陛马科股份公司 | Operating system for sewing machine |
| CN110983662A (en) * | 2019-12-23 | 2020-04-10 | 拓卡奔马机电科技有限公司 | Cloth-needling mechanism and sewing equipment with same |
| CN110983662B (en) * | 2019-12-23 | 2021-10-29 | 拓卡奔马机电科技有限公司 | Cloth-needling mechanism and sewing equipment with same |
| CN113186670A (en) * | 2021-03-23 | 2021-07-30 | 绍兴市晶远花型设计有限公司 | Embroidery machine driver |
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