CN114717760A - Rotating shuttle opening mechanism in sewing machine and sewing machine - Google Patents
Rotating shuttle opening mechanism in sewing machine and sewing machine Download PDFInfo
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- CN114717760A CN114717760A CN202110007132.7A CN202110007132A CN114717760A CN 114717760 A CN114717760 A CN 114717760A CN 202110007132 A CN202110007132 A CN 202110007132A CN 114717760 A CN114717760 A CN 114717760A
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- 230000007246 mechanism Effects 0.000 title claims abstract description 46
- 238000009958 sewing Methods 0.000 title claims abstract description 43
- 230000005540 biological transmission Effects 0.000 claims abstract description 48
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 230000007704 transition Effects 0.000 claims description 3
- 230000005570 vertical transmission Effects 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000009434 installation Methods 0.000 description 6
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- 238000005452 bending Methods 0.000 description 2
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- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 1
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 1
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B59/00—Applications of bobbin-winding or -changing devices; Indicating or control devices associated therewith
- D05B59/04—Devices for changing the bobbin
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Abstract
The invention provides a rotating shuttle opening mechanism in a sewing machine and the sewing machine, and belongs to the technical field of sewing machines. It has solved current sewing machine technical problem such as big noise. The sewing machine comprises a bottom plate, a mounting seat and a lower shaft, wherein the mounting seat is fixedly arranged on the bottom plate; a rotating shuttle shaft connected with the lower shaft is vertically arranged on the mounting seat, and the rotating shuttle is arranged at the upper end of the rotating shuttle shaft; the rotating shuttle opening mechanism comprises a driving shaft vertically and rotatably arranged on a mounting seat and a shuttle opening device fixedly arranged at the upper end of the driving shaft, wherein the shuttle opening device and the rotating shuttle are correspondingly arranged, the lower end of the driving shaft is connected with a lower shaft through a transmission assembly, and the lower shaft drives the rotating shuttle shaft to rotate for two circles and simultaneously drives the driving shaft to rotate for one time in a reciprocating manner. In the process of forming a lock stitch, the rotating shuttle rotates for 2 weeks and opens the shuttle once, compared with the original mechanism, the proportion of the rotating shuttle is reduced by half, and the noise generated by opening the shuttle is reduced by reducing the frequency of opening the shuttle, thereby being beneficial to greatly reducing the noise of the whole machine.
Description
Technical Field
The invention belongs to the technical field of sewing machines, and relates to a rotating shuttle opening mechanism in a sewing machine and the sewing machine.
Background
The sewing machine is a machine which uses one or more sewing threads to form one or more stitches on a sewing material so as to interweave or sew one or more layers of the sewing 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, the sewed stitch is neat, beautiful, flat and firm, the sewing speed is high, the use is simple and convenient, and the sewing machine is widely applied in the field of clothing manufacture. The rotating shuttle is an important part of the sewing machine and can be divided into a horizontal rotating shuttle and a vertical rotating shuttle according to the rotating direction formed after the rotating shuttle is installed. For the horizontal rotating shuttle, an opening mechanism is generally provided. The shuttle opening mechanism is used for applying reverse force of the rotating direction of the rotating shuttle at proper time to enable the rotating shuttle to rotate to a certain extent, so that a certain gap is formed between the positioning angle of the rotating shuttle and the clamping groove of the needle plate seat, and the upper thread can conveniently pass around.
Chinese patent (publication number: CN 209114139U; publication date: 2019-07-16) discloses a rotating shuttle opening device, which comprises: the device comprises a rotating shuttle, a rotating shuttle shaft, a driving bevel gear, a shuttle opener crank and a shaft sleeve; the rotating shuttle is connected to one end of a rotating shuttle shaft, a driving bevel gear is in transmission connection with the other end of the rotating shuttle shaft, the shuttle opener comprises a shuttle opening head and a connecting shaft, one end of the connecting shaft is connected with the shuttle opening head, a shuttle opener crank is connected with the other end of the connecting shaft, a fork-shaped opening portion of the shuttle opener crank is in transmission connection with an eccentric surface of the rotating shuttle shaft, the rotating shuttle shaft drives the shuttle opener to swing left and right in a reciprocating mode, and shaft sleeves are mounted on the upright post seat, sleeved on the rotating shuttle shaft and located at two ends of the upright post seat.
In the patent document, the shuttle opener is driven by the rotating shuttle shaft to swing back and forth left and right, so that the rotating shuttle is stirred. The rotating shuttle opening device is characterized in that a rotating shuttle shaft is used as a crank, and the rotating shuttle rotates for one circle to complete one-time shuttle opening. According to the forming process of the lock stitch, the rotating shuttle tip hooks the upper thread to bypass the rotating shuttle inner container, the upper thread is required to be wound by opening the shuttle, the rotating shuttle rotates for the first circle, the rotating shuttle rotates for the second circle, and the take-up lever finishes take-up. I.e. to form a lock stitch, the rotating shuttle needs to rotate two revolutions. The conclusion is drawn by combining the two points: the rotating shuttle rotates for two circles to complete a lock stitch and simultaneously opens the shuttle twice, wherein the first time of opening the shuttle is active, and the second time of opening the shuttle is not wound by the upper thread and has no effect on the stitch. Because the shuttle opening process generates impact, the noise generated by two times of shuttle opening is a main source of the noise of the whole machine.
Disclosure of Invention
The invention provides a rotating shuttle opening mechanism in a sewing machine and the sewing machine with the rotating shuttle opening mechanism aiming at the problems in the prior art, and the technical problems to be solved by the invention are as follows: how to reduce the ineffective shuttle opening action so as to reduce the working noise of the sewing machine.
The purpose of the invention can be realized by the following technical scheme:
a rotating shuttle opening mechanism in a sewing machine comprises a bottom plate, a mounting seat fixedly arranged on the bottom plate and a lower shaft rotatably arranged below the bottom plate; a rotating shuttle shaft connected with the lower shaft is vertically arranged on the mounting seat, and a rotating shuttle is arranged at the upper end of the rotating shuttle shaft; the rotating shuttle opening mechanism is characterized by comprising a driving shaft vertically and rotatably arranged on the mounting seat and a shuttle opening device fixedly arranged at the upper end of the driving shaft, wherein the shuttle opening device is arranged corresponding to the rotating shuttle, the lower end of the driving shaft is connected with the lower shaft through a transmission assembly, and the lower shaft drives the rotating shuttle shaft to rotate for two circles and simultaneously drives the driving shaft to rotate for one time in a reciprocating manner.
The working principle is as follows: the shuttle opener is an arc-shaped part with a tip, the tip faces the rotating shuttle, the other end of the shuttle opener is fixedly connected with the upper end of the driving shaft and locked by a screw, the shuttle opener is flush with the horizontal plane of the rotating shuttle, and one side surface of the shuttle opener is a shuttle opening surface and matched with the convex angle surface of the rotating shuttle. The shuttle opener can adopt the existing structure and is not described in detail herein. In the technical scheme, the driving force of the rotating shuttle opening mechanism does not use a rotating shuttle shaft as a driving element, but uses a lower shaft as a power source. According to the mechanism of the existing sewing machine, the rotating shuttle shaft is connected with the lower shaft through a pair of gears, and the transmission ratio is 2: 1, namely, the lower shaft rotates for 1 circle, and the rotating shuttle shaft rotates for 2 circles. The driving part of the mechanism is arranged on the lower shaft, and when the lower shaft rotates for 1 circle, the driving shaft and the shuttle opener swing in a reciprocating way once. In the process of forming a lock stitch, the rotating shuttle rotates for 2 weeks, and the shuttle is opened once, so that the proportion of the rotating shuttle to the original mechanism is reduced by half, and the noise generated by the opening of the shuttle is reduced by reducing the frequency of the opening of the shuttle, thereby being beneficial to greatly reducing the noise of the whole machine.
In the rotating shuttle opening mechanism in the sewing machine, the lower shaft is transversely arranged, a first bevel gear is fixedly arranged on the lower shaft, a second bevel gear is fixedly arranged at the lower end of the rotating shuttle shaft, the first bevel gear is meshed with the second bevel gear, and the transmission ratio of the first bevel gear to the second bevel gear is 1: 2; the transmission assembly comprises a cam fixedly arranged on the lower shaft and a mounting plate fixedly arranged at the bottom of the bottom plate, a vertical transmission shaft is connected to the mounting plate in a rotating mode, the cam is connected with the transmission shaft through a swinging crank, the transmission shaft is connected with the lower end of the driving shaft through a connecting rod, and the lower end of the driving shaft and the connecting rod can rotate synchronously. When the sewing machine normally works, the lower shaft rotates, the lower shaft drives the rotating shuttle shaft and the rotating shuttle to rotate through the meshing transmission of the bevel gear I and the bevel gear II, and the lower shaft rotates for one circle and drives the rotating shuttle to rotate for two circles; meanwhile, the lower shaft rotates for one circle, the swinging crank is driven by the cam to swing once, and then the driving shaft and the shuttle opener are driven to move once.
In the rotating shuttle opening mechanism in the sewing machine, an annular curve slideway is arranged on the peripheral surface of the cam along the circumferential direction of the cam, the curve slideway is provided with a bending section which is deviated to one side along the axis of the curve slideway, and the side walls of the curve slideway are connected end to end and are in smooth transition; the section of the curve slideway is rectangular, one side of the swing crank is connected with a spherical ball through an axial position screw, the spherical ball is embedded in the curve slideway in a sliding mode, a vertical connecting hole is formed in the swing crank, and the lower end of the transmission shaft is inserted in the connecting hole and is locked and fixed through a locking screw. The cam in the technical scheme is a cylindrical cam, the curved slideway is structurally characterized in that a groove is formed in the outer peripheral surface of a cylinder, and the type of an expansion curve of the curved slideway is stop-rise-return-stop. The spherical ball is arranged in the curve slideway, and two side surfaces of the curve slideway are respectively contacted with the spherical surface of the spherical ball. The lower shaft drives the cam to rotate, the spherical ball moves along the track of the cam in the curve slideway of the cam, so that the swinging crank is driven to swing, the swinging crank further drives the transmission shaft and the driving shaft to rotate, and finally the shuttle opener at the upper end of the driving shaft is driven to swing to form unlocking action.
Alternatively, the curved slide way on the cam can also adopt similar or equivalent alternatives, for example, an annular convex structure is provided, two spherical balls are clamped on two sides of the annular convex structure, or a structure that a track is arranged on the end surface of the cam, and a crank is driven by a crank connecting rod to swing is adopted.
In the rotating shuttle opening mechanism in the sewing machine, the middle part of the cam is provided with the installation through hole along the axial direction of the cam, the lower shaft is inserted into the installation through hole and is locked and fixedly connected with the installation through hole through the screw, one end of the cam is provided with the flange, and the curved slideway is arranged on the peripheral surface of the flange.
In the rotating shuttle opening mechanism in the sewing machine, the mounting plate is in a long strip shape, two ends of the mounting plate are fixed on the bottom plate through fixing screws, two vertical through holes which are arranged side by side at intervals are formed in the mounting plate, the transmission shaft and the driving shaft are respectively and rotatably inserted into the two vertical through holes, the lower ends of the transmission shaft and the driving shaft are fixedly connected with transmission cranks, and the outer ends of the two transmission cranks are connected through the connecting rod. Furthermore, the upper end of the transmission shaft is limited through a check ring and a screw, and the connecting rod is connected with the outer end of the transmission crank through a connecting pin and a clamp spring.
Alternatively, the transmission assembly may adopt other equivalent alternatives, for example, a helical gear with only partial tooth surface is fixedly arranged on the lower shaft, a complete helical gear is correspondingly fixedly arranged at the lower end of the driving shaft, and the helical gear and the complete helical gear are in clearance engagement, so that the driving shaft is driven to swing in clearance and the driving shaft is driven to swing once when the lower shaft rotates for one circle.
In the rotating shuttle opening mechanism in the sewing machine, the mounting seat is respectively provided with the vertical upper shaft sleeve and the vertical lower shaft sleeve, the upper shaft sleeve and the lower shaft sleeve are arranged at intervals up and down, the upper shaft sleeve and the lower shaft sleeve are coaxially arranged, and the rotating shuttle shaft penetrates through the upper shaft sleeve and the lower shaft sleeve. The rotating shuttle shaft in the technical scheme has the characteristics that the axis of the rotating shuttle shaft and the axis of the rotating shuttle mounting hole are concentrically arranged, and the rotating shuttle shaft is not in an eccentric structure of a traditional mechanism, and the rotating shuttle does not swing when rotating.
The invention also provides a sewing machine which is provided with the rotating shuttle opening mechanism.
Compared with the prior art, the rotating shuttle opening mechanism has the following advantages:
1. in the process of forming a lock stitch, the rotating shuttle rotates for 2 weeks to open the shuttle once, only useful opening shuttle is reserved, useless opening shuttle is omitted, the proportion is reduced by half compared with the original mechanism, and the noise generated by opening the shuttle is reduced by reducing the frequency of opening the shuttle, so that the noise of the whole machine is greatly reduced.
2. The cam mechanism, the crank mechanism and the like adopted in the invention are connected, so that the manufacturing difficulty is low, and the assembly is simple.
3. The cam of the invention adopts a self-closed structure, and does not need a spring and other similar parts to reset.
Drawings
Fig. 1 is a schematic view of the mounting structure of the rotating shuttle opening mechanism.
Fig. 2 is a schematic perspective view of the rotating shuttle opening mechanism.
Fig. 3 is an exploded view of the present rotary shuttle opening mechanism.
Fig. 4 is a schematic view of the installation and connection structure of the transmission shaft in the rotating shuttle opening mechanism.
In the figure, 1, a bottom plate; 2. a mounting seat; 3. a lower shaft; 4. a rotating shuttle shaft; 5. a rotating shuttle; 6. a drive shaft; 7. a shuttle opener; 8. a transmission assembly; 81. a cam; 81a, a curved slideway; 81b, a bending section; 81c, mounting through holes; 81d, a flange; 82. mounting a plate; 83. a drive shaft; 84. a swing crank; 84a, a connecting hole; 85. a connecting rod; 86. an axial screw; 87. a spherical ball; 88. locking the screw; 89. a set screw; 8a, a transmission crank; 9. a first bevel gear; 10. a second bevel gear; 11. an upper shaft sleeve; 12. and a lower shaft sleeve.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
Example one
As shown in fig. 1 to 4, the sewing machine includes a base plate 1, a mounting seat 2 fixed on the base plate 1, and a lower shaft 3 rotatably disposed below the base plate 1; a rotating shuttle shaft 4 connected with the lower shaft 3 is vertically arranged on the mounting seat 2, and a rotating shuttle 5 is arranged at the upper end of the rotating shuttle shaft 4; the rotating shuttle opening mechanism comprises a driving shaft 6 which is vertically and rotatably arranged on the mounting seat 2 and a shuttle opening device 7 which is fixedly arranged at the upper end of the driving shaft 6, wherein the shuttle opening device 7 is arranged corresponding to the rotating shuttle 5, the lower end of the driving shaft 6 is connected with the lower shaft 3 through a transmission assembly 8, and the lower shaft 3 drives the rotating shuttle shaft 4 to rotate for two circles and simultaneously drives the driving shaft 6 to rotate for one time in a reciprocating manner. The shuttle opener 7 is an arc-shaped part with a tip, the tip faces the rotating shuttle 5, the other end of the shuttle opener is fixedly connected with the upper end of the driving shaft 6 and locked by a screw, the shuttle opener is flush with the horizontal plane of the rotating shuttle 5, and one side of the shuttle opener is a shuttle opening surface and matched with the convex angle surface of the rotating shuttle 5. The shuttle opener 7 can adopt the existing structure and is not described in detail herein. In the technical scheme, the driving force of the rotating shuttle opening mechanism does not use the rotating shuttle shaft 4 as a driving element, but uses the lower shaft 3 as a power source. According to the mechanism of the existing sewing machine, the rotating shuttle shaft 4 is connected with the lower shaft 3 through a pair of gears, and the transmission ratio is 2: 1, i.e. the lower shaft 3 rotates 1 revolution, and the rotating shuttle shaft 4 rotates 2 revolutions. The prime mover of the mechanism is mounted on the lower shaft 3, and the driving shaft 6 and the shuttle opener 7 oscillate back and forth once when the lower shaft 3 rotates for 1 revolution. In the process of forming a lock stitch, the rotating shuttle 5 rotates for 2 weeks and opens the shuttle once, compared with the original mechanism, the proportion is reduced by half, and the noise generated by opening the shuttle is reduced by reducing the frequency of opening the shuttle, thereby being beneficial to greatly reducing the noise of the whole machine.
Further, as shown in fig. 2 and 3, the lower shaft 3 is transversely arranged, a first bevel gear 9 is fixedly arranged on the lower shaft 3, a second bevel gear 10 is fixedly arranged at the lower end of the rotating shuttle shaft 4, the first bevel gear 9 is meshed with the second bevel gear 10, and the transmission ratio of the first bevel gear to the second bevel gear is 1: 2; the transmission assembly 8 comprises a cam 81 fixedly arranged on the lower shaft 3 and a mounting plate 82 fixedly arranged at the bottom of the bottom plate 1, a vertical transmission shaft 83 is connected to the mounting plate 82 in a rotating mode, the cam 81 is connected with the transmission shaft 83 through a swing crank 84, the transmission shaft 83 is connected with the lower end of the driving shaft 6 through a connecting rod 85, and the transmission shaft and the driving shaft can rotate synchronously. When the sewing machine normally works, the lower shaft 3 rotates, the lower shaft 3 is in meshing transmission with the bevel gear II 10 through the bevel gear I9 to drive the rotating shuttle shaft 4 and the rotating shuttle 5 to rotate, and the lower shaft 3 rotates for one circle to drive the rotating shuttle 5 to rotate for two circles; at the same time, the lower shaft 3 rotates once to drive the oscillating crank 84 to oscillate once through the cam 81, and further drive the driving shaft 6 and the shuttle opener 7 to move once.
As shown in fig. 3 and 4, the middle of the cam 81 has an installation through hole 81c along the axial direction thereof, the lower shaft 3 is inserted into the installation through hole 81c and the two are fixedly locked by a screw, one end of the cam 81 has a flange 81d, an annular curved slideway 81a is provided on the outer circumferential surface of the flange 81d along the circumferential direction thereof, the curved slideway 81a has a curved section 81b which is offset to one side along the axial direction thereof, and the side walls of the curved slideway 81a are connected end to end and are in smooth transition; the section of the curve slideway 81a is rectangular, one side of the swing crank 84 is connected with a spherical ball 87 through a shaft position screw 86, the spherical ball 87 is embedded in the curve slideway 81a in a sliding way, the swing crank 84 is provided with a vertical connecting hole 84a, and the lower end of the transmission shaft 83 is inserted in the connecting hole 84a and is locked and fixed through a locking screw 88. The cam 81 in this embodiment is a cylindrical cam 81, the curved slide 81a has a structure in which a groove is formed on the outer circumferential surface of a cylinder, and the type of the developed curve of the curved slide 81a is stop-raise-return-stop. The spherical balls are arranged in the curved slide way 81a, and two side surfaces of the curved slide way 81a are respectively contacted with the spherical surfaces of the spherical balls. The lower shaft 3 drives the cam 81 to rotate, the spherical ball 87 moves along the track of the curved slide 81a of the cam 81, so as to drive the swing crank 84 to swing, the swing crank 84 further drives the transmission shaft 83 and the driving shaft 6 to rotate, and finally drives the shuttle opener 7 at the upper end of the driving shaft 6 to swing, so as to form an unlocking action.
Further, mounting panel 82 is rectangular shape, and the both ends of mounting panel 82 are fixed on bottom plate 1 through set screw 89, sets up two vertical through-holes that the interval set up side by side on the mounting panel 82, and transmission shaft 83 and drive shaft 6 rotate respectively and peg graft in two vertical through-holes, and the lower extreme of transmission shaft 83 and drive shaft 6 has all linked firmly transmission crank 8a, and two transmission crank 8 a's outer end is connected through connecting rod 85. Furthermore, the upper end of the transmission shaft 83 is limited by a check ring and a screw, and the connecting rod 85 is connected with the outer end of the transmission crank 8a through a connecting pin and a clamp spring.
In this embodiment, the mounting base 2 is provided with a vertical upper shaft sleeve 11 and a vertical lower shaft sleeve 12, the upper shaft sleeve 11 and the lower shaft sleeve 12 are arranged at an upper-lower interval, the upper shaft sleeve 11 and the lower shaft sleeve 12 are coaxially arranged, and the rotating shuttle shaft 4 penetrates through the upper shaft sleeve 11 and the lower shaft sleeve 12. The rotating shuttle shaft 4 in the embodiment is characterized in that the axis of the rotating shuttle shaft 4 and the axis of the mounting hole of the rotating shuttle 5 are concentrically arranged, but not an eccentric structure of a traditional mechanism, and the rotating shuttle 5 does not swing when the rotating shuttle shaft 4 rotates in the technical scheme.
Example two
The present embodiment discloses a sewing machine including the rotating shuttle opening mechanism in the first embodiment.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Claims (7)
1. A rotating shuttle opening mechanism in a sewing machine comprises a bottom plate (1), a mounting seat (2) fixedly arranged on the bottom plate (1) and a lower shaft (3) rotatably arranged below the bottom plate (1); a rotating shuttle shaft (4) connected with the lower shaft (3) is vertically arranged on the mounting seat (2), and a rotating shuttle (5) is arranged at the upper end of the rotating shuttle shaft (4); the rotating shuttle opening mechanism is characterized by comprising a driving shaft (6) vertically and rotatably arranged on the mounting seat (2) and a shuttle opening device (7) fixedly arranged at the upper end of the driving shaft (6), wherein the shuttle opening device (7) is arranged corresponding to the rotating shuttle (5), the lower end of the driving shaft (6) is connected with the lower shaft (3) through a transmission assembly (8), and the lower shaft (3) drives the rotating shuttle shaft (4) to rotate for two circles and simultaneously drives the driving shaft (6) to rotate for one time in a reciprocating manner.
2. The rotating shuttle opening mechanism in the sewing machine according to claim 1, characterized in that the lower shaft (3) is transversely arranged, a first bevel gear (9) is fixedly arranged on the lower shaft (3), a second bevel gear (10) is fixedly arranged at the lower end of the rotating shuttle shaft (4), the first bevel gear (9) is meshed with the second bevel gear (10), and the transmission ratio of the first bevel gear to the second bevel gear (10) is 1: 2; transmission unit (8) including set firmly cam (81) on lower shaft (3) with set firmly mounting panel (82) of bottom plate (1) bottom, it is connected with vertical transmission shaft (83) to rotate on mounting panel (82), cam (81) with be connected through swing crank (84) between transmission shaft (83), transmission shaft (83) with the lower extreme of drive shaft (6) is connected through connecting rod (85) and both can synchronous rotation.
3. The rotating shuttle opening mechanism in the sewing machine according to claim 2, characterized in that the outer peripheral surface of the cam (81) is provided with an annular curved slideway (81a) along the circumferential direction thereof, the curved slideway (81a) is provided with a curved section (81b) which is deviated to one side along the axial line thereof, and the side wall of the curved slideway (81a) is connected end to end and is in smooth transition; the cross section of the curve slideway (81a) is rectangular, one side of the swing crank (84) is connected with a spherical ball (87) through a shaft position screw (86), the spherical ball (87) is embedded in the curve slideway (81a) in a sliding manner, a vertical connecting hole (84a) is formed in the swing crank (84), and the lower end of the transmission shaft (83) is inserted in the connecting hole (84a) and is locked and fixed through a locking screw (88).
4. The rotating shuttle opening mechanism in a sewing machine according to claim 3, wherein the cam (81) has a mounting through hole (81c) in a middle portion thereof in an axial direction thereof, the lower shaft (3) is inserted into the mounting through hole (81c) and both are fastened by screw locking, the cam (81) has a flange (81d) at one end thereof, and the curved slide way (81a) is provided on an outer peripheral surface of the flange (81 d).
5. The rotating shuttle shedding mechanism of the sewing machine according to claim 3 or 4, wherein the mounting plate (82) is in a strip shape, two ends of the mounting plate (82) are fixed on the bottom plate (1) through fixing screws (89), two vertical through holes are formed in the mounting plate (82) and arranged side by side at intervals, the transmission shaft (83) and the driving shaft (6) are respectively rotatably inserted into the two vertical through holes, the lower ends of the transmission shaft (83) and the driving shaft (6) are fixedly connected with transmission cranks (8a), and the outer ends of the two transmission cranks (8a) are connected through the connecting rod (85).
6. A rotating shuttle opening mechanism in a sewing machine according to claim 2, 3 or 4, characterized in that the mounting seat (2) is respectively provided with an upper shaft sleeve (11) and a lower shaft sleeve (12) which are vertical, the upper shaft sleeve (11) and the lower shaft sleeve (12) are arranged at intervals up and down, the upper shaft sleeve (11) and the lower shaft sleeve (12) are coaxially arranged, and the rotating shuttle shaft (4) passes through the upper shaft sleeve (11) and the lower shaft sleeve (12).
7. A sewing machine comprising the rotating shuttle opening mechanism according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110007132.7A CN114717760A (en) | 2021-01-05 | 2021-01-05 | Rotating shuttle opening mechanism in sewing machine and sewing machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110007132.7A CN114717760A (en) | 2021-01-05 | 2021-01-05 | Rotating shuttle opening mechanism in sewing machine and sewing machine |
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| CN114717760A true CN114717760A (en) | 2022-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110007132.7A Pending CN114717760A (en) | 2021-01-05 | 2021-01-05 | Rotating shuttle opening mechanism in sewing machine and sewing machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116949705A (en) * | 2023-09-07 | 2023-10-27 | 乐清华普缝纫机科技有限公司 | Thread pulling mechanism of sewing machine |
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| CN203807745U (en) * | 2014-05-13 | 2014-09-03 | 诸暨市新信机电科技有限公司 | Device for opening internal shuttle of rotating shuttle of embroidery machine |
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- 2021-01-05 CN CN202110007132.7A patent/CN114717760A/en active Pending
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|---|---|---|---|---|
| GB316506A (en) * | 1929-01-01 | 1929-08-01 | Singer Mfg Co | Rotary hook sewing machines |
| DE510152C (en) * | 1929-01-11 | 1930-10-16 | Singer Mfg Co | Lockstitch sewing machine with a revolving hook and a controlled bobbin case |
| GB328535A (en) * | 1929-09-24 | 1930-05-01 | Singer Manufac Turing Company | Loop-taker mechanisms for sewing machines |
| US3507237A (en) * | 1967-07-31 | 1970-04-21 | Pfaff Ag G M | Bobbin case opener for rotating looptaker lockstitch sewing machines |
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| JP2010104550A (en) * | 2008-10-30 | 2010-05-13 | Brother Ind Ltd | Horizontal shuttle for sewing machine |
| JP3152188U (en) * | 2009-03-16 | 2009-07-23 | 啓翔股▲ふん▼有限公司 | Sewing machine bobbin case opener |
| CN203807745U (en) * | 2014-05-13 | 2014-09-03 | 诸暨市新信机电科技有限公司 | Device for opening internal shuttle of rotating shuttle of embroidery machine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116949705A (en) * | 2023-09-07 | 2023-10-27 | 乐清华普缝纫机科技有限公司 | Thread pulling mechanism of sewing machine |
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