CN110396777A - A kind of looper regulating device of chain type sewing machine - Google Patents
A kind of looper regulating device of chain type sewing machine Download PDFInfo
- Publication number
- CN110396777A CN110396777A CN201910553788.1A CN201910553788A CN110396777A CN 110396777 A CN110396777 A CN 110396777A CN 201910553788 A CN201910553788 A CN 201910553788A CN 110396777 A CN110396777 A CN 110396777A
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- Prior art keywords
- looper
- curved needle
- eccentric bushing
- outer diameter
- regulating device
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- 230000001105 regulatory effect Effects 0.000 title claims abstract description 44
- 238000009958 sewing Methods 0.000 title claims abstract description 13
- 230000007246 mechanism Effects 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- -1 density Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B63/00—Devices associated with the loop-taker thread, e.g. for tensioning
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The invention discloses a kind of looper regulating devices of chain type sewing machine, its height that can adjust looper is to adapt to wire loop of different shapes, including eedle, curved needle shaft, looper and regulating mechanism, regulating mechanism includes eccentric bushing, eccentric bushing is sheathed on curved needle shaft and can rotate relative to curved needle shaft, looper is installed on eccentric bushing by curved needle seat, and the larger portion of the outer diameter of eccentric bushing is greater than outer diameter smaller part at a distance from the axial line of curved needle shaft at a distance from the axial line of curved needle shaft；Looper regulating device is under first use state, and when looper point is located at the surface of pin hole, the larger portion of outer diameter is located at the upside of curved needle shaft, and has the first difference in height between looper point and pin hole；Under second use state, when looper point is located at the surface of pin hole, outer diameter smaller part is located at the upside of curved needle shaft, and has the second difference in height between looper point and pin hole, and the first difference in height is greater than the second difference in height.
Description
Technical field
The invention belongs to sewing device fields, and in particular to a kind of looper regulating device of chain type sewing machine.
Background technique
It is chain type that chain type sewing machine, which sews formed stitching, is common in jacket bottom etc..The sewing principle of chain type sewing machine
Substantially are as follows: upper thread passes through the string holes of eedle, and driving eedle pumps across or be pierced by cloth, shape when eedle moves upwards
At the wire loop of upper thread, at this point, the size in the needle point insertion wire loop of looper to be adjusted to need by lines.However due to upper thread
The influence of the factors such as thickness, the thickness of material and fabric, density, material, the shape of formed wire loop when eedle moves upwards
It is different, thus the height of corresponding adjustment looper is needed, the needle point that otherwise will appear looper can not be inserted into the problems in wire loop.
Summary of the invention
Present invention aim to address above-mentioned the deficiencies in the prior art and problems, propose a kind of chain type sewing machine
Looper regulating device, the height of looper can be adjusted to adapt to wire loop of different shapes.
In order to achieve the above objectives, The technical solution adopted by the invention is as follows:
A kind of looper regulating device of chain type sewing machine, including can pump eedle, by power mechanism driving turn
Dynamic curved needle shaft and the looper by curved needle shaft driving rotation, the eedle has the pin hole passed through for upper thread, described curved
Needle set has the looper point for being inserted into the wire loop that the upper thread that the eedle is worn is formed, and the looper regulating device further includes using
In the regulating mechanism of the difference in height for the pin hole for adjusting the looper point and the eedle, the regulating mechanism includes bias
Set, the eccentric bushing are sheathed on the curved needle shaft and can rotate relative to the curved needle shaft, and the looper is pacified by curved needle seat
Loaded on the eccentric bushing, the eccentric bushing has the larger portion of outer diameter and an outer diameter smaller part, the larger portion of outer diameter with it is described curved
The distance of the axial line of needle shaft is greater than the outer diameter smaller part at a distance from the axial line of the curved needle shaft；The looper adjusts dress
Setting at least tool, there are two use states, under first use state, when the looper point is located at the surface of the pin hole,
The larger portion of outer diameter is located at the upside of the curved needle shaft, and has the first difference in height between looper point and the pin hole；
Under second use state, when the looper point is located at the surface of the pin hole, the outer diameter smaller part is located at described
The upside of curved needle shaft, and there is the second difference in height between looper point and the pin hole, first difference in height is greater than described
Second difference in height.
Preferably, the curved needle seat is sheathed on the eccentric bushing and the eccentric bushing is allowed to rotate to it.
It is highly preferred that the regulating mechanism further include for by the curved needle seat and/or the eccentric cover locking to prevent
The locking member that the curved needle seat and the eccentric bushing are rotated relative to the curved needle shaft.
Further, the curved needle seat has opposite both ends, and the both ends of the curved needle seat have interval and formed
There is the first notch, the locking member is detachably connected on the both ends of the curved needle seat, and the locking member is connected to described
First notch when on the both ends of curved needle seat is less than described when the locking member is detached from the upper end of the curved needle seat
First notch.
Further, the eccentric bushing has opposite both ends, and the both ends of the eccentric bushing, which have, to be spaced and shape
At there is the second notch, second notch when locking member is connected on the both ends of the curved needle seat is less than the locking
Part is detached from second notch when upper end of the curved needle seat.
Specifically, the locking member is screw.
Preferably, it is seamlessly transitted between the larger portion of the outer diameter and the outer diameter smaller part.
Preferably, the eccentric bushing is inserted between the curved needle shaft and the curved needle seat, and the regulating mechanism further includes
It is fixedly connected or integrally formed adjusting flange, offers on the adjusting flange convenient for adjusting the bias with the eccentric bushing
The tune ditch of the position of set.
Preferably, the looper is fixed by screws on the curved needle seat.
The present invention uses above scheme, has the advantages that compared with prior art
By being finely adjusted to eccentric bushing, make it relative to curved needle shaft and looper set rotation, to change the larger portion of its outer diameter and outer
The position of diameter smaller part reaches the spacing for adjusting the pin hole of looper part and eedle so as to accordingly adjust the height of curved needle shaft
Effect, can adapt to different size fabric or different size upper thread be formed by wire loop of different shapes, avoid generate bouncing pilotage.
Detailed description of the invention
It, below will be to attached drawing needed in embodiment description in order to illustrate more clearly of technical solution of the present invention
It is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the invention, general for this field
For logical technical staff, without creative efforts, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of front view of looper regulating device of embodiment；
Fig. 2 is the partial sectional view of the side of looper regulating device shown in Fig. 1；
Fig. 3, Fig. 4 are the schematic diagram of regulating mechanism；
Fig. 5 a, Fig. 5 b, Fig. 5 c are respectively schematic diagram of the looper regulating device under three use states；
Fig. 6 a, Fig. 6 b, Fig. 6 c are respectively the wire loop schematic diagram under three use states.
Wherein:
1, eedle；10, pin hole；2, curved needle shaft；3, looper；30, looper point；4, eccentric bushing；40, the second notch；41, outer diameter is larger
Portion；42, outer diameter smaller part；5, flange is adjusted；50, ditch is adjusted；6, curved needle seat；60, the first notch；7, screw；8, screw；9, face
Line.
Specific embodiment
The preferred embodiments of the present invention will be described in detail with reference to the accompanying drawing, so that advantages and features of the invention energy
It is easier to be understood by the person skilled in the art.The present invention is to the usual observation visual angle that the definition in orientation is according to those skilled in the art
It is defined in order to describe convenient, does not limit specific direction.
The present embodiment provides a kind of looper regulating devices of chain type sewing machine.Shown in referring to Figures 1 and 2, which is adjusted
Device includes the eedle 1 that can be pumped, by the curved needle shaft 2 of power mechanism driving rotation and by the curved needle shaft 2
Drive the looper 3 of rotation.After there is the pin hole 10 passed through for upper thread, upper thread to pass through the pin hole 10 of eedle 1 for the lower part of eedle 1, with
The transport up and down of eedle 1 and form wire loop, looper 3 has the looper point 30 that is formed by wire loop for being inserted into upper thread.It should
Looper regulating device further includes the regulating mechanism for the difference in height for adjusting the pin hole 10 of looper point 30 and eedle 1, passes through adjusting
The height of looper point 30 is adjusted in mechanism, to adapt to different size upper thread (such as different thicknesses, material), different clothes (such as
Different densities, thickness, material) it is formed by wire loop, avoid the occurrence of bouncing pilotage.
In conjunction with shown in Fig. 1 to Fig. 4, the regulating mechanism includes eccentric bushing 4.Eccentric bushing 4 is sheathed on curved needle shaft 2 and can
It is rotated relative to curved needle shaft 2, looper 3 is installed on eccentric bushing 4 by curved needle seat 6.Eccentric bushing 4 has the larger portion 41 of outer diameter and outer diameter
Smaller part 42, the larger portion 41 of outer diameter are greater than the axial line of outer diameter smaller part 42 and curved needle shaft 2 at a distance from the axial line of curved needle shaft 2
Distance, seamlessly transitted between the larger portion 41 of outer diameter and outer diameter smaller part 42.Wherein, eccentric bushing 4 has and 2 phase interworking of curved needle shaft
The inner hole of conjunction, curved needle shaft 2 is threaded through in inner hole, and the two is coaxial.The looper regulating device at least has there are two use state,
Under first use state, when looper point 30 is located at the surface of pin hole 10, the larger portion 41 of outer diameter is located at the upper of curved needle shaft 2
Side, and there is the first difference in height between looper point 30 and pin hole 10；Under second use state, when looper point 30 is located at pin hole
When 10 surface, outer diameter smaller part 42 is located at the upside of curved needle shaft 2, and has the second height between looper point 30 and pin hole 10
Difference, the first difference in height are greater than the second difference in height.It should also be noted that, when looper regulating device switches by a use state
During another use state, eccentric bushing 4 can be rotated relative to curved needle shaft 2 and curved needle seat 6, so as to adjust its phase,
Change the position in its outer diameter larger portion 41 and outer diameter smaller part 42；And when looper regulating device is switched to any use state
When, eccentric bushing 4 is locked, it is relatively fixed between curved needle seat 6 and eccentric bushing 4 and with curved needle shaft 2 rotate synchronously, drive looper 3
Rotation carries out hooking.
In the present embodiment, which at least has there are three use state, be followed successively by extreme higher position use state,
Normal place use state and extreme lower position use state, respectively as shown in Fig. 5 a, Fig. 5 b and Fig. 5 c.When looper regulating device exists
Shown in Fig. 5 a when the use state of extreme higher position, the larger portion 41 of the outer diameter of eccentric bushing 4 is located at upside, looper point 30 and below
The difference in height of pin hole 10 is d1, and the difference in height of the two is maximum at this time；Fig. 6 a shows institute's energy under the extreme higher position use state
Wire loop shape formed by the upper thread 9 of adaptation, wherein looper point 30 is in higher position, could be inserted into wire loop, otherwise can produce
Raw bouncing pilotage.When looper regulating device normal place use state shown in Fig. 5 b, the larger portion of the outer diameter of eccentric bushing 4 41 and outer
Intermediate position between 42 the two of diameter smaller part is located at upside, and the difference in height of looper point 30 and pin hole 10 below is d2, at this time
The difference in height of the two is moderate；Fig. 6 b shows the wire loop formed by the adaptable upper thread 9 of institute under the normal place use state
Shape, wherein looper point 30 is in moderate position, could be inserted into wire loop, otherwise can generate bouncing pilotage.When looper regulating device exists
Shown in Fig. 5 c when extreme lower position use state, the outer diameter smaller part 42 of eccentric bushing 4 is located at upside, looper point 30 and below
The difference in height of pin hole 10 is d3, and the difference in height of the two is minimum at this time；Fig. 6 c shows institute's energy under the extreme lower position use state
Wire loop shape formed by the upper thread 9 of adaptation, wherein looper point 30 is in lower position, could be inserted into wire loop, otherwise can produce
Raw bouncing pilotage.Wherein, d1 > d2 > d3.
Curved needle seat 6 is sheathed on eccentric bushing 4 and allowable offset set 4 rotates to it.The regulating mechanism further includes for inciting somebody to action
Curved needle seat 6 and/or eccentric bushing 4 lock the locking member to prevent curved needle seat 6 and eccentric bushing 4 from rotating relative to curved needle shaft 2.The present embodiment
In, curved needle seat 6 has opposite both ends, and the both ends of curved needle seat 6 have interval and are formed with the first notch 60, thus looper
6 generally c-shaped or open annulars of seat, and and curved needle seat 6 itself have and certain elastic consolidate so as to shrink under external force
It is scheduled on eccentric bushing 4.Locking member is detachably connected on the both ends of curved needle seat 6, and locking member is connected to the both ends of curved needle seat 6
The first notch 60 when in portion is less than the first notch 60 when locking member is detached from the upper end of curved needle seat 6, i.e., connects by locking member
It connecing during 6 both ends of curved needle seat, locking member applies external force to curved needle seat 6, so that the both ends of curved needle seat 6 are drawn close, the
One notch 60 becomes smaller, 6 overall shrinkage of curved needle seat.The locking member is specially screw 7, is threaded through the two of curved needle seat 6 by screw thread
On end.
Eccentric bushing 4 also has opposite both ends, and the both ends of eccentric bushing 4 have interval and are formed with the second notch 40,
Thus eccentric bushing 4 is also generally c-shaped or open annular, and eccentric bushing 4 itself have it is certain elastic so as in external force
It is lower contraction and be fixed on curved needle shaft 2.The second notch 40 when locking member is connected on the both ends of curved needle seat 6 is less than locking member
It is detached from the second notch 40 when the upper end of curved needle seat 6.That is, being connected to the mistake at the both ends of curved needle seat 6 in locking member
Cheng Zhong, the eccentric bushing 4 in curved needle seat 6 further shunk by curved needle seat 6 caused by pressure, namely shrink therewith, both ends
Portion is drawn close, and the second notch 40 becomes smaller, until eccentric bushing 4 is locked on curved needle shaft 2, curved needle seat 6 is locked on eccentric bushing 4,
Three is connected as one, and curved needle seat 6 and eccentric bushing 4 are with the synchronous rotation of curved needle shaft 2, so that looper 3 be driven to penetrate wire loop.
Eccentric bushing 4 is inserted between curved needle shaft 2 and curved needle seat 6, and regulating mechanism further includes being fixedly connected with eccentric bushing 4 or one
The adjusting flange 5 of body forming, adjusts and is offered on flange 5 convenient for adjusting the tune ditch 50 of the position of eccentric bushing 4, can cooperate work
Have (such as screwdriver) to use.It should also be noted that, the first above-mentioned notch 60 is axially through eccentric bushing 4 and adjusts flange 5.
Looper 3 is fixed on curved needle seat 6 by screw 8.
When needing to adjust the height of looper point 30, screw 7 is unscrewed, the tools such as screwdriver are caught in and are adjusted in ditch 50, are made
Eccentric bushing 4 turns an angle with respect to curved needle shaft 2 and curved needle seat 6, changes the position in its outer diameter larger portion and outer diameter smaller part, adjusts
After saving in place；Screw 7 is tightened, is locked at curved needle seat 6 and eccentric bushing 4 on curved needle shaft 2；When sewing machine is started to work, partially
Heart set 4 and curved needle seat 6 are rotated together with curved needle shaft 2, so that the rotation of looper 3 be driven to carry out hooking operation.
The above embodiments merely illustrate the technical concept and features of the present invention, is a kind of preferred embodiment, and purpose exists
It cans understand the content of the present invention and implement it accordingly in person skilled in the art, protection of the invention can not be limited with this
Range.It is all according to equivalent transformation made by this hair or modification, should be covered by the protection scope of the present invention.
Claims (9)
1. a kind of looper regulating device of chain type sewing machine, including can pump eedle, driven by power mechanism
The curved needle shaft of rotation and the looper rotated by curved needle shaft driving, the eedle has the pin hole passed through for upper thread, described
Looper has the looper point for being inserted into the wire loop that the upper thread that the eedle is worn is formed, it is characterised in that: the looper tune
Regulating device further includes the regulating mechanism for the difference in height for adjusting the pin hole of the looper point and the eedle, the adjusting
Mechanism includes eccentric bushing, and the eccentric bushing is sheathed on the curved needle shaft and can rotate relative to the curved needle shaft, the looper
Be installed on the eccentric bushing by curved needle seat, the eccentric bushing have the larger portion of outer diameter and outer diameter smaller part, the outer diameter compared with
Big portion is greater than the outer diameter smaller part at a distance from the axial line of the curved needle shaft at a distance from the axial line of the curved needle shaft；Institute
It states looper regulating device at least to have there are two use state, under first use state, when the looper point is located at the needle
When the surface in hole, the larger portion of outer diameter is located at the upside of the curved needle shaft, and has between looper point and the pin hole
There is the first difference in height；Under second use state, when the looper point is located at the surface of the pin hole, the outer diameter compared with
Small portion is located at the upside of the curved needle shaft, and has the second difference in height between looper point and the pin hole, and described first is high
Degree difference is greater than second difference in height.
2. looper regulating device according to claim 1, it is characterised in that: the curved needle seat is sheathed on the eccentric bushing
And the eccentric bushing is allowed to rotate to it.
3. looper regulating device according to claim 2, it is characterised in that: the regulating mechanism further includes for will be described
The locking of curved needle seat and/or the eccentric cover locking to prevent the curved needle seat and the eccentric bushing from rotating relative to the curved needle shaft
Part.
4. looper regulating device according to claim 3, it is characterised in that: the curved needle seat has opposite both ends,
The both ends of the curved needle seat have interval and are formed with the first notch, and the locking member is detachably connected to the curved needle seat
Both ends on, first notch when locking member is connected on the both ends of the curved needle seat is less than the locking member
It is detached from first notch when upper end of the curved needle seat.
5. looper regulating device according to claim 4, it is characterised in that: the eccentric bushing has opposite both ends,
The both ends of the eccentric bushing have interval and are formed with the second notch, and the locking member is connected to the both ends of the curved needle seat
Second notch when upper is less than second notch when locking member is detached from the upper end of the curved needle seat.
6. looper regulating device according to claim 3, it is characterised in that: the locking member is screw.
7. looper regulating device according to claim 1, it is characterised in that: the larger portion of outer diameter and the outer diameter are smaller
It is seamlessly transitted between portion.
8. looper regulating device according to claim 1, it is characterised in that: the eccentric bushing be inserted in the curved needle shaft and
Between the curved needle seat, the regulating mechanism further includes being fixedly connected with the eccentric bushing or integrally formed adjusting flange, institute
It states to adjust and be offered on flange convenient for adjusting the tune ditch of the position of the eccentric bushing.
9. looper regulating device according to claim 1, it is characterised in that: the looper is fixed by screws in described curved
On needle stand.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910553788.1A CN110396777B (en) | 2019-06-25 | 2019-06-25 | Looper adjusting device of chain type sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910553788.1A CN110396777B (en) | 2019-06-25 | 2019-06-25 | Looper adjusting device of chain type sewing machine |
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| Publication Number | Publication Date |
|---|---|
| CN110396777A true CN110396777A (en) | 2019-11-01 |
| CN110396777B CN110396777B (en) | 2024-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910553788.1A Active CN110396777B (en) | 2019-06-25 | 2019-06-25 | Looper adjusting device of chain type sewing machine |
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| Country | Link |
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| CN (1) | CN110396777B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114000272A (en) * | 2021-11-05 | 2022-02-01 | 欧大纬纺织机械（广东）有限公司 | Curved needle edge locking machine head with large-bag inner bay space and design method thereof |
| CN115087772A (en) * | 2019-12-17 | 2022-09-20 | Pfaff工业系统与机械有限公司 | Stitch forming tool assembly for sewing system and sewing system with same |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115087772A (en) * | 2019-12-17 | 2022-09-20 | Pfaff工业系统与机械有限公司 | Stitch forming tool assembly for sewing system and sewing system with same |
| CN115087772B (en) * | 2019-12-17 | 2024-01-26 | Pfaff工业系统与机械有限公司 | Stitch forming tool assembly for sewing system and sewing system with same |
| CN114000272A (en) * | 2021-11-05 | 2022-02-01 | 欧大纬纺织机械（广东）有限公司 | Curved needle edge locking machine head with large-bag inner bay space and design method thereof |
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| Publication number | Publication date |
|---|---|
| CN110396777B (en) | 2024-04-09 |
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