CN109972308B - Needle bar stroke adjusting structure, sewing machine with needle bar stroke adjusting structure and stroke adjusting method - Google Patents
Needle bar stroke adjusting structure, sewing machine with needle bar stroke adjusting structure and stroke adjusting method Download PDFInfo
- Publication number
- CN109972308B CN109972308B CN201910291267.3A CN201910291267A CN109972308B CN 109972308 B CN109972308 B CN 109972308B CN 201910291267 A CN201910291267 A CN 201910291267A CN 109972308 B CN109972308 B CN 109972308B
- Authority
- CN
- China
- Prior art keywords
- needle bar
- needle
- eccentric wheel
- stroke adjusting
- positioning piece
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The invention discloses a needle bar stroke adjusting structure, a sewing machine and a stroke adjusting method thereof. The needle rod crank is rotatably arranged on a machine shell of the sewing machine, one end of the needle rod connecting rod is rotatably connected with a needle rod of the sewing machine, and the other end of the needle rod connecting rod is rotatably arranged on the needle rod crank and provided with a circular mounting hole. The needle bar pin is inserted into the needle bar crank, and the side wall of the needle bar pin is provided with a taper hole. The eccentric wheel is sleeved in the mounting hole, and the needle bar pin is arranged in the eccentric hole of the eccentric wheel. One end of the positioning piece penetrates through the eccentric wheel in the radial direction and is inserted into the taper hole, and the other end of the positioning piece is positioned inside the outer edge of the eccentric wheel. According to the invention, related devices do not need to be pried out, on one hand, the damage to the devices can be avoided, on the other hand, the adjustment is easy, the operation is convenient, and the efficiency of adjusting the stroke of the needle rod is improved. In addition, the eccentric pin is not used in the invention, the processing difficulty and the processing cost of parts are reduced, and the adaptability of the thickness of the machine can be improved.
Description
Technical Field
The invention relates to a needle bar stroke adjusting structure in the technical field of spinning, in particular to a sewing machine and a needle bar stroke adjusting method.
Background
A sewing machine is a machine that uses one or more sewing threads to form one or more stitches in a material to be sewn, thereby interweaving or stitching one or more layers of material. The sewing machine can sew fabrics such as cotton, hemp, silk, wool, artificial fiber and the like and products such as leather, plastic, paper and the like, and the sewed stitches are neat, beautiful, flat and firm, the sewing speed is high, and the use is simple and convenient.
The existing flat seaming machines for adjusting the stroke of the needle bar are generally complex in stroke adjustment mode. Among them, a typical patent is disclosed in publication No. CN1303276C, entitled device for changing needle bar stroke of sewing machine. When the sewing machine is used for stroke adjustment, the left cover of the machine head is firstly detached, then two screws of the crank of the needle rod are loosened, the eccentric pin is pried out by a screwdriver after winding, the eccentric pin is rotated by 180 degrees by the screwdriver and pushed in, finally the screw of the crank of the needle rod is sequentially locked, and the left cover of the machine head is installed. Therefore, the adjusting process of the sewing machine is very complicated, and the eccentric pin is difficult to pry out and rotate 180 degrees due to the limited space of the head part of the machine shell, and can be quickly completed by very skilled personnel. Therefore, the existing sewing machine needle bar stroke adjusting device has the problems of complicated adjusting process and high adjusting difficulty.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides a needle bar stroke adjusting structure, a sewing machine and a stroke adjusting method thereof, and solves the problems of complicated adjusting process and high adjusting difficulty of the existing needle bar stroke adjusting device of the sewing machine.
The invention is realized by adopting the following technical scheme: a needle bar stroke adjusting structure for adjusting a needle bar stroke of a sewing machine, comprising:
a needle bar crank rotatably mounted on a housing of the sewing machine;
one end of the needle bar connecting rod is rotationally connected with the needle bar of the sewing machine, and the other end of the needle bar connecting rod is rotationally arranged on the needle bar crank; the other end of the needle bar connecting rod is provided with a circular mounting hole;
a needle bar pin inserted and fixed on the needle bar crank and having an axial direction parallel to the axial direction of the needle bar crank; the side wall of the needle bar pin is provided with at least one taper hole;
the eccentric wheel is sleeved in the mounting hole, and the needle bar pin is arranged in the eccentric hole of the eccentric wheel; and
one end of the positioning piece penetrates through the eccentric wheel in the radial direction and is inserted into the taper hole, and the other end of the positioning piece is positioned inside the outer edge of the eccentric wheel;
when the needle bar stroke of the sewing machine is adjusted, the positioning piece moves outwards along the radial direction of the eccentric wheel and is separated from the taper hole, the other end of the positioning piece is limited with the needle bar connecting rod, and the needle bar connecting rod drives the eccentric wheel to rotate through the positioning piece so as to change the distance between the central line of the mounting hole and the central line of the needle bar crank.
As a further improvement of the proposal, the needle rod connecting rod is hinged with the eccentric wheel and is positioned by a needle rod pin and a gasket, and the gasket is arranged between the needle rod connecting rod and the eccentric wheel.
As a further improvement of the scheme, the eccentric wheel is provided with a plurality of storage holes along the radial direction, and the storage holes are internally provided with oil cotton which is used for discharging oil to lubricate the space between the needle rod connecting rod and the eccentric wheel.
As a further improvement of the scheme, the number of the taper holes is two, and the axial directions of the two taper holes are parallel and perpendicular to the axial direction of the needle bar pin.
As a further improvement of the scheme, the needle bar stroke adjusting structure is arranged inside the machine shell.
As a further improvement of the proposal, the part of the machine shell close to the crank of the needle rod is provided with an oil seal, and a sealing element is arranged in the oil seal.
As a further improvement of the proposal, the needle bar pin is fixed on the needle bar crank through a connecting piece, and the connecting piece and the positioning piece are both screws.
As a further improvement of the above scheme, the other end of the needle bar connecting rod is provided with a groove structure, and when the stroke of the needle bar of the sewing machine is adjusted, the other end of the positioning piece is limited in the groove of the groove structure.
The needle bar stroke regulating structure of the invention can separate the positioning piece from the needle bar pin by moving the positioning piece when regulating the needle bar stroke of the sewing machine, and at the moment, the connection relation between the eccentric wheel and the needle bar pin is released, and the eccentric wheel can rotate relative to the needle bar pin. Therefore, when the eccentric wheel rotates, the end part of the needle rod connecting rod is sleeved on the eccentric wheel, so that the distance between the central line of the mounting hole and the central line of the needle rod crank is changed, the radius of the other end of the needle rod connecting rod rotating around the central line of the needle rod crank is changed along with the change of the central line, the motion path of one end of the needle rod connecting rod is further changed, and the adjustment of the needle rod stroke of the sewing machine is realized.
Wherein, at the in-process to the needle bar stroke, the regulating personnel only need move the setting element can, need not to prize out relevant device, can avoid the damage to the device on the one hand, on the other hand can easily adjust, convenient operation improves the efficiency that the needle bar stroke was adjusted. In addition, the eccentric pin is not used in the invention, the processing difficulty and the processing cost of parts can be reduced, and the adaptability of the thickness of the machine can be improved.
The invention also provides a sewing machine convenient for adjusting the stroke of the needle rod, which comprises a machine shell, the needle rod and a stroke adjusting device; the needle rod and the stroke adjusting device are both arranged on the machine shell, and the stroke adjusting device is used for adjusting the lifting amplitude of the needle rod; the stroke adjusting device is the needle bar stroke adjusting structure; the needle rod crank is rotatably arranged on the machine shell, and one end of the needle rod connecting rod is rotatably connected with the needle rod;
when the stroke of the needle rod is adjusted, the positioning piece moves outwards along the radial direction of the eccentric wheel and is separated from the taper hole, so that the other end of the positioning piece is limited with the needle rod connecting rod, and the needle rod connecting rod drives the eccentric wheel to rotate through the positioning piece so as to change the distance between the central line of the mounting hole and the central line of the needle rod crank.
The invention also provides a needle bar stroke adjusting method which is applied to any needle bar stroke adjusting structure; the needle bar stroke adjusting method comprises the following steps:
moving the positioning piece outwards along the radial direction of the eccentric wheel to enable the other end of the positioning piece to be limited with the needle rod connecting rod;
driving the eccentric wheel to rotate, and changing the distance between the central line of the mounting hole and the central line of the needle rod crank;
after the angle of the positioning piece is adjusted, one end of the positioning piece is inserted into the taper hole, so that the needle bar pin and the eccentric wheel are relatively fixed.
Drawings
Fig. 1 is a disassembled view of a needle bar stroke adjusting structure of embodiment 1 of the invention;
FIG. 2 is a front view of the needle bar stroke adjustment structure of FIG. 1 with the bottom stroke adjusted from the high stroke;
FIG. 3 is a front elevational view of the needle bar stroke adjustment structure of FIG. 1 as it is stroked up from the bottom stroke;
FIG. 4 is a schematic view of the needle bar stroke adjusting structure of FIG. 2 with the positioning member thereof being in position-limiting relation with the needle bar link;
fig. 5 is a schematic view of the needle bar stroke adjusting structure in fig. 3 when the positioning member is limited by the needle bar link.
Description of the main elements
| Casing (CN) | 1 |
| |
2 |
| Needle |
3 |
| |
4 |
| |
5 |
| Locating |
6 |
| Gasket | 7 |
| |
8 |
| |
9 |
| |
10 |
| |
21 |
| |
22 |
| |
23 |
| |
31 |
| Locating |
221 |
The present invention is described in further detail with reference to the drawings and the detailed description.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and the detailed description. It should be understood that the detailed description and specific examples, while indicating the scope of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Example 1
Referring to fig. 1 to 5, the present embodiment provides a needle bar stroke adjusting structure for adjusting the stroke of a needle bar of a sewing machine, and includes a needle bar crank 2, a needle bar connecting rod 3, a needle bar pin 4, an eccentric wheel 5, a positioning member 6, and further includes a gasket 7 and a sealing member 8. In the present embodiment, the needle bar stroke adjusting structure is provided inside the housing 1 of the sewing machine, and is a structure of the sewing machine. The needle bar stroke adjusting structure can adjust the stroke of the needle bar and can be used as a device for driving the needle bar to move up and down to enable the needle bar to carry out sewing work.
The needle bar crank 2 is rotatably installed on the housing 1 of the sewing machine and can be driven to rotate by a driving structure of the sewing machine. The central line of the needle bar crank 2 is perpendicular to the needle bar of the sewing machine, i.e. the needle bar is arranged along the radial direction of the needle bar crank 2. In the present embodiment, the needle bar crank 2 is circular and has an inner circular structure 21, a mounting structure 22, and an outer circular structure 23, which are coaxially arranged. The inner circular structure 21 is a shaft structure and is directly rotatably installed inside the housing 1. The mounting structure 22 fits over the inner circular structure 21 and may also be integrally formed with the inner circular structure 21. The mounting structure 22 is provided with a plurality of positioning holes 221, and the axial directions of the plurality of positioning holes 221 are parallel to the axial direction of the inner circular structure 21. The outer ring structure 23 is fitted over the mounting structure 22 and may also be integrally formed with the mounting structure 22. Of course, the needle bar crank 2 can adopt other existing structures, and the structure is convenient to assemble and use.
One end of the needle bar connecting rod 3 is rotatably connected with a needle bar of the sewing machine, the other end is rotatably installed on the needle bar crank 2, and the other end of the needle bar connecting rod 3 is provided with a circular installation hole 31. The needle bar connecting rod 3 can be hinged with the eccentric wheel 5 through a hinge and positioned through a needle bar pin 4 and a gasket 7, wherein the gasket 7 is arranged between the needle bar connecting rod 3 and the eccentric wheel 5. It should be noted here that the needle bar link 3 of the present embodiment has a groove structure on the other end thereof. The groove of the groove structure is provided in a radial direction of the mounting hole 31, and a groove width of the groove needs to be larger than a diameter of the other end of the positioning member 6. The other end of the needle bar link 3 may be circular and may have the same diameter as the distance between the inner circular structure 21 and the outer circular structure 23. Of course, the needle bar connecting rod 3 can adopt the existing connecting rod structure, so that the selection of the needle bar connecting rod 3 and the assembly of the adjusting structure are convenient.
The needle bar pin 4 is inserted into and fixed to the needle bar crank 2 in an axial direction parallel to the axial direction of the needle bar crank 2. At least one taper hole is formed in the side wall of the needle bar pin 4, in the present embodiment, the number of the taper holes is two, and the axial directions of the two taper holes are parallel and perpendicular to the axial direction of the needle bar pin 4. The shank pin 4 can be fixed to the shank crank 2 by means of a connecting piece, and the connecting piece is a screw. When the needle bar crank 2 is installed, a first jack arranged along the axial direction and a second jack arranged along the radial direction are arranged on the needle bar crank 2, and the first jack is communicated with the second jack. The installer inserts the pin 4 into the first insertion hole, and then inserts the connecting member into the pin 4 through the second insertion hole to fix the pin 4 relative to the crank 2.
The eccentric wheel 5 is fitted into the mounting hole 31, and the needle bar pin 4 is disposed in the eccentric hole of the eccentric wheel 5. In the present embodiment, the eccentric wheel 5 is provided with a plurality of storage holes along the radial direction, and the storage holes are provided with oil cotton 10, and the oil cotton 10 is used for discharging oil to lubricate between the needle bar connecting rod 3 and the eccentric wheel 5. The oil cotton 10 can be provided as a part of the eccentric 5, or can be provided separately and as a structure of the needle bar stroke adjusting structure. In the present embodiment, an oil seal is provided at a portion of the casing 1 near the needle bar crank 2, that is, an oil seal is provided at the head cover 9, and a sealing member 8 is provided in the oil seal. Therefore, when oil is required to be added to the oil cotton 10, an operator can take out the sealing piece 8 firstly and then add grease to the storage hole through the oil seal, so that the needle rod connecting rod 3 and the eccentric wheel 5 can be lubricated all the time, the friction force is reduced, and the working efficiency of the sewing machine is improved.
One end of the positioning element 6 passes through the eccentric wheel 5 in the radial direction and is inserted in the conical hole, and the other end is located within the outer edge of the eccentric wheel 5. The positioning element 6 is a screw, which can be the same screw as the connecting element, so as to facilitate assembly, and other screws can be used. The length of the positioning element 6 is at least greater than the thickness of the eccentric 5, depending on the size of the eccentric 5, in order to ensure that it can pass through the side walls of the eccentric 5.
When the needle bar stroke of the sewing machine is adjusted, an operator moves the positioning piece 6 outwards along the radial direction of the eccentric wheel 5 and separates from the taper hole, so that the other end of the positioning piece 6 is limited with the needle bar connecting rod 3, and the needle bar connecting rod 3 drives the eccentric wheel 5 to rotate through the positioning piece 6, so that the distance between the central line of the mounting hole 31 and the central line of the needle bar crank 2 is changed. Specifically, in the above-mentioned adjustment process, the other end of the positioning member 6 is retained in the groove of the groove structure.
When the needle bar is in a high stroke, the thicker part of the eccentric wheel 5 is aligned with the center of the needle bar crank 2, at the moment, when the needle bar crank 2 is rotated to the position shown in the figure 2, the sealing piece 8 is removed, the positioning piece 6 is loosened by a screwdriver, the conical head part of the positioning piece 6 is ensured to be separated from the conical hole of the needle bar pin 4, then the needle bar crank 2 is rotated, at the moment, the groove structure of the needle bar connecting rod 3 can collide with the positioning piece 6 and drive the eccentric wheel 5 to rotate, when the needle bar crank 2 rotates 180 degrees, namely, at the position shown in the figure 3, the eccentric wheel 5 can also rotate by an angle slightly lower than 180 degrees, then the positioning piece 6 is slightly adjusted by the screwdriver to be locked, the outer edge of the positioning piece 6 is ensured not to exceed the outer edge of the eccentric wheel 5, and then the oil seal is sealed through the sealing piece 8.
In conclusion, compared with the existing needle bar stroke adjusting device, the needle bar stroke adjusting structure of the embodiment has the following beneficial effects:
in the needle bar stroke adjusting structure of the present embodiment, when the needle bar stroke of the sewing machine is adjusted, the positioning member 6 is separated from the needle bar pin 4 by moving the positioning member 6, and at this time, the connection between the eccentric wheel 5 and the needle bar pin 4 is released, and the eccentric wheel 5 is rotatable relative to the needle bar pin 4. Therefore, when the eccentric wheel 5 rotates, the end part of the needle rod connecting rod is sleeved on the eccentric wheel 5, so that the distance between the central line of the mounting hole and the central line of the needle rod crank 2 is changed, the radius of the other end of the needle rod connecting rod 3 rotating around the central line of the needle rod crank 2 is changed along with the change, the motion path of one end of the needle rod connecting rod 3 is further changed, and the adjustment of the needle rod stroke of the sewing machine is realized.
Wherein, at the in-process to the needle bar stroke, the regulating personnel only need move setting element 6 can, need not to prize relevant device out, can avoid the damage to the device on the one hand, on the other hand can easily adjust, convenient operation improves the efficiency that the needle bar stroke was adjusted. In addition, an eccentric pin is not used in the embodiment, the processing difficulty and the processing cost of parts can be reduced, and the adaptability of the thickness of the machine can be improved.
Example 2
The embodiment provides a sewing machine convenient for adjusting the stroke of a needle rod, which comprises a machine shell 1, a needle rod and a stroke adjusting device. In the present embodiment, the stroke adjusting means is the needle bar stroke adjusting structure described in embodiment 1. The needle bar and the stroke adjusting device are both arranged on the machine shell 1, and the stroke adjusting device is used for adjusting the lifting amplitude of the needle bar. The needle rod crank 2 is rotatably arranged on the machine shell 1, and one end of the needle rod connecting rod 3 is rotatably connected with the needle rod.
When the stroke of the needle rod is adjusted, an operator moves the positioning piece 6 outwards along the radial direction of the eccentric wheel 5 and separates from the taper hole, so that the other end of the positioning piece 6 is limited with the needle rod connecting rod 3, and the needle rod connecting rod 3 drives the eccentric wheel 5 to rotate through the positioning piece 6, so that the distance between the central line of the mounting hole 31 and the central line of the needle rod crank 2 is changed.
It should be noted that the sewing machine provided in the present embodiment may also include other existing structures, and may be used as a manual sewing machine, an electric sewing machine driven by electric power, or a part of a large-scale sewing device. The advantages of the sewing machine of this embodiment are the same as those of the needle bar stroke adjusting structure in embodiment 1, and the sewing machine can conveniently perform stroke adjustment, thereby saving materials for the sewing machine.
Example 3
The present embodiment provides a needle bar stroke adjusting method which is applied to the needle bar stroke adjusting structure in embodiment 1, and which includes the steps of:
1. moving the positioning piece 6 radially outwards along the eccentric wheel 5 to enable the other end of the positioning piece 6 to be limited with the needle bar connecting rod 3;
2. the eccentric wheel 5 is driven to rotate, and the distance between the central line of the mounting hole 31 and the central line of the needle rod crank 2 is changed;
3. after the angle of the positioning piece 6 is adjusted, one end of the positioning piece 6 is inserted into the taper hole, so that the needle bar pin 4 and the eccentric wheel 5 are relatively fixed.
The needle bar stroke adjusting method of the embodiment is convenient for adjusting the stroke, and can correspondingly reduce the operation requirement of operators, so that non-technical personnel can also quickly adjust the needle bar stroke of the sewing machine. Meanwhile, the stroke adjusting method can also be applied to other similar devices, and is not limited to the sewing machine.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A needle bar stroke adjusting structure for adjusting a needle bar stroke of a sewing machine, comprising:
a needle bar crank (2) rotatably mounted on a housing (1) of the sewing machine;
a needle bar connecting rod (3), one end of which is rotationally connected with the needle bar of the sewing machine, and the other end of which is rotationally arranged on a needle bar crank (2);
it is characterized in that the other end of the needle bar connecting rod (3) is provided with a circular mounting hole (31); the needle bar stroke adjusting structure further comprises:
a needle bar pin (4) which is inserted and fixed on the needle bar crank (2) and is parallel to the axial direction of the needle bar crank (2); the side wall of the needle bar pin (4) is provided with at least one taper hole;
the eccentric wheel (5) is sleeved in the mounting hole (31), and the needle bar pin (4) is arranged in the eccentric hole of the eccentric wheel (5); and
one end of the positioning piece (6) penetrates through the eccentric wheel (5) in the radial direction and is inserted into the taper hole, and the other end of the positioning piece is positioned inside the outer edge of the eccentric wheel (5);
when the needle bar stroke of the sewing machine is adjusted, the positioning piece (6) moves outwards along the radial direction of the eccentric wheel (5) and is separated from the taper hole, so that the other end of the positioning piece (6) is limited with the needle bar connecting rod (3), and the needle bar connecting rod (3) drives the eccentric wheel (5) to rotate through the positioning piece (6) so as to change the distance between the central line of the mounting hole (31) and the central line of the needle bar crank (2);
the other end of the needle bar connecting rod (3) is provided with a groove structure, and when the needle bar stroke of the sewing machine is adjusted, the other end of the positioning piece (6) is limited in a groove of the groove structure.
2. A needle bar stroke adjusting structure as defined in claim 1, wherein the needle bar connecting rod (3) is hinged with the eccentric wheel (5) and is positioned by the needle bar pin (4) and a spacer (7), the spacer (7) being disposed between the needle bar connecting rod (3) and the eccentric wheel (5).
3. A needle bar stroke adjusting structure as defined in claim 1, wherein the eccentric wheel (5) is provided with a plurality of storage holes along a radial direction, and the storage holes are provided with oil cotton (10), the oil cotton (10) being used for discharging oil to lubricate between the needle bar connecting rod (3) and the eccentric wheel (5).
4. Needle bar stroke adjusting structure as defined in claim 1, characterized in that the number of said tapered holes is two, and the axial directions of two said tapered holes are parallel and perpendicular to the axial direction of the needle bar pin (4).
5. A needle bar stroke adjusting structure as defined in claim 1, which is provided inside the housing (1).
6. The needle bar stroke adjusting structure as claimed in claim 1, characterized in that the part of the machine shell (1) close to the needle bar crank (2) is provided with an oil seal, and a sealing element (8) is arranged in the oil seal.
7. A needle bar stroke adjusting structure as defined in claim 1, characterized in that the needle bar pin (4) is fixed on the needle bar crank (2) by a connecting piece, and the connecting piece and the positioning piece (6) are both screws.
8. A needle bar stroke adjusting structure as defined in claim 1, wherein the groove of the groove structure is provided in a radial direction of the mounting hole (31), and a groove width of the groove needs to be larger than a diameter of the other end of the positioning member (6).
9. A sewing machine convenient for adjusting the stroke of a needle bar comprises a machine shell (1), the needle bar and a stroke adjusting device; the needle rod and the stroke adjusting device are both arranged on the machine shell (1), and the stroke adjusting device is used for adjusting the lifting amplitude of the needle rod; the needle bar stroke adjusting structure is characterized in that the stroke adjusting device is the needle bar stroke adjusting structure according to any one of claims 1 to 8;
when the stroke of the needle rod is adjusted, the positioning piece (6) moves outwards in the radial direction along the eccentric wheel (5) and is separated from the taper hole, so that the other end of the positioning piece (6) is limited with the needle rod connecting rod (3), and the needle rod connecting rod (3) drives the eccentric wheel (5) to rotate through the positioning piece (6) to change the distance between the central line of the mounting hole (31) and the central line of the needle rod crank (2).
10. A needle bar stroke adjusting method applied to the needle bar stroke adjusting structure as defined in any one of claims 1 to 8; the needle bar stroke adjusting method is characterized by comprising the following steps:
the positioning piece (6) is moved outwards along the radial direction of the eccentric wheel (5), so that the other end of the positioning piece (6) is limited with the needle bar connecting rod (3);
the eccentric wheel (5) is driven to rotate, and the distance between the central line of the mounting hole (31) and the central line of the needle rod crank (2) is changed;
after the angle of the positioning piece (6) is adjusted, one end of the positioning piece (6) is inserted into the taper hole, so that the needle bar pin (4) and the eccentric wheel (5) are 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 |
Applications Claiming Priority (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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109972308A CN109972308A (en) | 2019-07-05 |
| CN109972308B true CN109972308B (en) | 2021-11-02 |
Family
ID=67084189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910291267.3A Active 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 |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109972308B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4038230B1 (en) * | 2019-10-01 | 2024-01-10 | VI.BE.MAC. S.p.A. | Handling system for sewing machines |
| 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 |
| CN113186670B (en) * | 2021-03-23 | 2023-05-02 | 绍兴市晶远花型设计有限公司 | Embroidery machine driver |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1106088A (en) * | 1993-07-12 | 1995-08-02 | 纺织品有限公司 | Method and apparatus for joining two edges of a knitted tubular article upon completion thereof |
| CN1766193A (en) * | 2004-10-27 | 2006-05-03 | 兄弟工业株式会社 | Intermittent presser foot up-down drive device and sewing machine |
| CN203360800U (en) * | 2013-05-20 | 2013-12-25 | 浙江宝石机电股份有限公司 | Needle bar stroke changeable mechanism of sewing machine |
| CN204939823U (en) * | 2015-07-29 | 2016-01-06 | 奈曼旗草原之秀绒毛制品有限公司 | Quilting needle throw of lever system |
| CN107761273A (en) * | 2016-08-23 | 2018-03-06 | Juki株式会社 | Sewing machine |
| CN207143471U (en) * | 2017-07-04 | 2018-03-27 | 杰克缝纫机股份有限公司 | The changeable sewing machine of needle bar stroke |
| DE102017204979A1 (en) * | 2017-03-24 | 2018-09-27 | Vorwerk & Co. Interholding Gmbh | Combined sewing machine |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10294597B2 (en) * | 2017-06-12 | 2019-05-21 | Zeng Hsing Industrial Co., Ltd. | Sewing machine |
-
2019
- 2019-04-11 CN CN201910291267.3A patent/CN109972308B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1106088A (en) * | 1993-07-12 | 1995-08-02 | 纺织品有限公司 | Method and apparatus for joining two edges of a knitted tubular article upon completion thereof |
| CN1766193A (en) * | 2004-10-27 | 2006-05-03 | 兄弟工业株式会社 | Intermittent presser foot up-down drive device and sewing machine |
| CN203360800U (en) * | 2013-05-20 | 2013-12-25 | 浙江宝石机电股份有限公司 | Needle bar stroke changeable mechanism of sewing machine |
| CN204939823U (en) * | 2015-07-29 | 2016-01-06 | 奈曼旗草原之秀绒毛制品有限公司 | Quilting needle throw of lever system |
| CN107761273A (en) * | 2016-08-23 | 2018-03-06 | Juki株式会社 | Sewing machine |
| DE102017204979A1 (en) * | 2017-03-24 | 2018-09-27 | Vorwerk & Co. Interholding Gmbh | Combined sewing machine |
| CN207143471U (en) * | 2017-07-04 | 2018-03-27 | 杰克缝纫机股份有限公司 | The changeable sewing machine of needle bar stroke |
| 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 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109972308A (en) | 2019-07-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109972308B (en) | Needle bar stroke adjusting structure, sewing machine with needle bar stroke adjusting structure and stroke adjusting method | |
| CN201762554U (en) | Independent plate-belt embroidery device of embroidery machine | |
| CN102776722A (en) | Needle-bar-rotating pattern sewing machine | |
| CN103114390B (en) | Sewing machine with adjustable needle rod and take-up stroke | |
| CN109594220A (en) | A kind of bag-bonding machine | |
| CN208562775U (en) | A kind of sewing machine and its shank rotate Zhi Qu mechanism | |
| CN202786714U (en) | Threading structure of pattern sewing machine | |
| CN203007632U (en) | Taping embroidery device and embroidery machine including same | |
| CN202090174U (en) | Coiling embroidery device and computerized embroidery machine with same | |
| CN210215808U (en) | Needle bar rotating mechanism of sewing machine | |
| CN204715031U (en) | Use in sewing machine is without shuttle thread supplying device | |
| CN214458895U (en) | Napping machine | |
| US2725837A (en) | Embroidery attachment for sewing machines | |
| CN209443189U (en) | A kind of sewing machine wire picking device and sewing machine | |
| CN210151359U (en) | Sewing machine's gauge needle adjusts structure | |
| CN209368479U (en) | Close joint device for chain seam sewing machine | |
| CN213389225U (en) | Adjustable workbench of sewing machine for clothing | |
| CN218345668U (en) | Independent driving device for presser foot of embroidery machine | |
| CN106811872A (en) | A kind of sewing machine thread coil | |
| KR101967640B1 (en) | Inner-hook rotating rotaryhook for hi-speed sewing | |
| CN208430294U (en) | A kind of upper and lower roller type feeding sewing machine of oblique-arm type | |
| CN102978846B (en) | Cord embroidery device and embroidery machine comprising cord embroidery device | |
| CN213652878U (en) | Sewing machine | |
| CN209082163U (en) | Computerized emboridering machine head embroidery shank | |
| CN215251624U (en) | 360 rotatory equipment of making up |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| 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: 318000 No. 15 Airport South Road, Jiaojiang District, Zhejiang, Taizhou Patentee before: JACK SEWING MACHINE Co.,Ltd. |