CN110699874A - Transmission structure of sewing machine - Google Patents
Transmission structure of sewing machine Download PDFInfo
- Publication number
- CN110699874A CN110699874A CN201911059056.3A CN201911059056A CN110699874A CN 110699874 A CN110699874 A CN 110699874A CN 201911059056 A CN201911059056 A CN 201911059056A CN 110699874 A CN110699874 A CN 110699874A
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- Prior art keywords
- rotating shuttle
- transmission
- shaft
- gear
- crank
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Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B57/00—Loop takers, e.g. loopers
- D05B57/30—Driving-gear for loop takers
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B69/00—Driving-gear; Control devices
- D05B69/02—Mechanical drives
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05D—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES D05B AND D05C, RELATING TO SEWING, EMBROIDERING AND TUFTING
- D05D2207/00—Use of special elements
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The invention provides a transmission structure of a sewing machine, comprising: a rotating shuttle mechanism arranged below the needle plate; the rotating shuttle mechanism comprises a third rotating shuttle gear, a rotating shuttle shaft, a gear cover and a rotating shuttle seat, the rotating shuttle shaft penetrates into the third rotating shuttle gear and is fixedly connected with the third rotating shuttle gear, and the top of the rotating shuttle shaft is also in transmission connection with the rotating shuttle; the middle part of the gear cover is provided with an installation cavity, and one side wall of the gear cover is provided with an opening; the third rotating shuttle gear and the rotating shuttle shaft are arranged in the mounting cavity; the gear cover is provided with an outer side wall which is attached to the inner side wall of the rotating shuttle seat. The invention improves the structure of the gear cover, reduces the structure of the gear cover, and further can reduce the size of the rotating shuttle seat; the size of the machine head is reduced, and a specific product with smaller size can be processed; the whole machine base does not need to be replaced during maintenance, and only the first rotating shuttle mechanism needs to be disassembled independently, so that the replacement and the maintenance are more convenient.
Description
Technical Field
The invention relates to the field of sewing machine devices, in particular to a transmission structure of a sewing machine.
Background
At present, a transmission structure of the existing sewing machine adopts various gears to be meshed with each other for transmission, and the overall structure size is large.
For example, patent document CN200720146583.4 discloses a "multi-head embroidery sewing machine", in which independent motors are provided for the respective heads of the sewing machine to individually drive the various mechanical elements of the needle bar, the thread take-up lever, and the presser foot; a motor common to each of the plurality of shuttles for driving the shuttles respectively provided below the respective sewing machine heads; and a transmission mechanism for transmitting the rotation of the common motor to the shuttles of the respective sewing machine heads. The machine head is large in size and is not suitable for processing specific products with smaller sizes, such as children shoes and the like.
Disclosure of Invention
Technical problem to be solved
The invention aims to provide a transmission structure of a sewing machine, which overcomes the defects that the conventional transmission mechanism of the sewing machine is large in integral structure size and is not suitable for processing specific products with smaller sizes, such as children shoes and the like.
(II) technical scheme
In order to solve the above technical problem, the present invention provides a transmission structure of a sewing machine, comprising: a rotating shuttle mechanism arranged below the needle plate; the rotating shuttle mechanism comprises a third rotating shuttle gear, a rotating shuttle shaft, a gear cover and a rotating shuttle seat, the rotating shuttle shaft penetrates into the third rotating shuttle gear and is fixedly connected with the third rotating shuttle gear, and the top of the rotating shuttle shaft is also in transmission connection with the rotating shuttle; the middle part of the gear cover is provided with an installation cavity, and one side wall of the gear cover is provided with an opening; the third rotating shuttle gear and the rotating shuttle shaft are arranged in the mounting cavity; the gear cover is provided with an outer side wall which is attached to the inner side wall of the rotating shuttle seat. The invention improves the structure of the gear cover, reduces the structure of the gear cover, and further can reduce the size of the rotating shuttle seat; the size of the machine head is reduced, and a specific product with smaller size can be processed; meanwhile, the rotating shuttle mechanism and the machine base are separated, processed separately and assembled together after being processed, so that the processing is simpler, and the processing precision is improved; the whole machine base does not need to be replaced when the machine base is maintained, only the first rotating shuttle mechanism needs to be disassembled independently, and the machine base is more convenient to replace and maintain.
Preferably, a rotating shuttle seat door is installed on one side of the rotating shuttle seat, a positioning hook is installed on the upper portion of the rotating shuttle seat door, and one end of the positioning hook is installed on the side wall of the rotating shuttle seat through a fastening piece.
Preferably, the transmission structure of the sewing machine further comprises a belt transmission mechanism, and the belt transmission mechanism comprises a lower shaft and a first main transmission shaft parallel to the lower shaft; one end of the lower shaft is provided with a first synchronous wheel; one end of the first transmission main shaft is provided with a first rotating shuttle gear, and the other end of the first transmission main shaft is provided with a second synchronizing wheel; the first rotating shuttle gear is used for being in transmission connection with a machine head power device, and drives a first transmission main shaft to rotate under the driving of the machine head power device, and the first synchronizing wheel is in transmission connection with a second synchronizing wheel adjacent to the first synchronizing wheel through a synchronous belt; a second rotating shuttle gear is arranged at one end of the lower shaft far away from the first synchronous wheel; the second rotating shuttle gear extends into the opening and engages the third rotating shuttle gear. The synchronous belt is in transmission connection with the first transmission main shaft and the lower shaft which is arranged on the same base in parallel, the belt stroke is short, the transmission occlusion resistance is small, the transmission process is sensitive, the whole width is reduced, the size of the whole structure is small, the length of the synchronous belt is short, the displacement and the loss caused by overlong belt can be effectively reduced, and the phenomenon of slipping caused by the fact that the elasticity of the synchronous belt (rubber) is poor and the synchronous belt is easy to loosen is caused because the longer synchronous belt is used for a long time; the whole feeding condition can be influenced, so that the short synchronous belt has good flexibility and longer service life.
Preferably, a bearing seat is arranged on the lower shaft, a synchronous belt tightening wheel is arranged on the bearing seat, the synchronous belt tightening wheel is arranged at the end part of the second synchronous wheel, and the other end of the synchronous belt tightening wheel is used for pressing a synchronous belt. The invention arranges the close proximity of the synchronous belt, so that after the synchronous belt is loosened after being used for a long time, the synchronous belt can be pressed by adjusting the synchronous belt tightening wheel, the synchronous belt is further tensioned, and the phenomena of slipping and the like can not occur.
Preferably, the transmission structure of the sewing machine further comprises a thread pressing mechanism; the wire pressing mechanism comprises a wire pressing sheet and a tooth frame which are arranged at the bottom of the needle plate, the wire pressing sheet is fixedly connected with the tooth frame, and a guide groove is formed in the tooth frame.
Preferably, the transmission structure of the sewing machine further comprises a crank transmission mechanism, the crank transmission mechanism comprises a first crank, a connecting rod and a second crank, and the first crank is in transmission connection with the second crank through the connecting rod; the tail end of the first crank is provided with a sliding column; the sliding column is inserted into the tooth rack and moves along the guide groove under the driving of the first crank.
Preferably, the transmission structure of the sewing machine further comprises a second main transmission shaft, and one end of the second main transmission shaft is in transmission connection with the machine head power device and is used for swinging up and down under the driving of the machine head power device.
Preferably, the other end of the second main transmission shaft is provided with a connecting seat, one end of the second main transmission shaft is inserted into the lower part of the connecting seat, and the upper part of the connecting seat is hinged with the tooth rack and used for driving the tooth rack to swing up and down.
Preferably, the transmission structure of the sewing machine further comprises a base, the belt transmission mechanism, the crank transmission mechanism and the second main transmission shaft are all installed in the base, and the needle seat of the belt transmission mechanism, the crank transmission mechanism and the second main transmission shaft is installed at the top of the base.
(III) advantageous effects
The invention provides a transmission structure of a sewing machine, which has the following advantages:
1. the invention improves the structure of the gear cover, reduces the structure of the gear cover, and further can reduce the size of the rotating shuttle seat; the size of the machine head is reduced, and a specific product with smaller size can be processed; meanwhile, the rotating shuttle mechanism and the machine base are separated, processed separately and assembled together after being processed, so that the processing is simpler, and the processing precision is improved; the whole machine base does not need to be replaced when the machine base is maintained, only the first rotating shuttle mechanism needs to be disassembled independently, and the machine base is more convenient to replace and maintain.
2. According to the invention, the synchronous belt is in transmission connection with the first transmission main shaft and the lower shaft, the belt stroke is short, the transmission occlusion resistance is small, the transmission process is sensitive, the whole width is reduced, the size of the whole structure is small, the length of the synchronous belt is short, the displacement and the loss caused by overlong belt can be effectively reduced, and the elasticity of the synchronous belt (rubber) is deteriorated and the phenomenon of slipping caused by easy looseness is caused because the longer synchronous belt is used for a long time; the whole feeding condition can be influenced, so that the short synchronous belt has good flexibility and longer service life.
3. The invention arranges the close proximity of the synchronous belt, so that after the synchronous belt is loosened after being used for a long time, the synchronous belt can be pressed by adjusting the synchronous belt tightening wheel, the synchronous belt is further tensioned, and the phenomena of slipping and the like can not occur.
Drawings
FIG. 1 is an exploded view of an embodiment 1 of a transmission structure of a sewing machine of the present invention;
fig. 2 is a partially enlarged assembly view of the rotating shuttle mechanism of embodiment 1 of the transmission structure of the sewing machine of the present invention, except for the rotating shuttle mechanism.
1. Gear cover, 2, second rotating shuttle gear, 3, third rotating shuttle gear, 4, bearing, 5, rotating shuttle shaft, 6, rotating shuttle seat, 7, positioning hook, 8, rotating shuttle seat door, 9, first crank, 10, connecting rod, 11, second crank, 12, connecting rod pin, 13, needle plate, 14, lower shaft, 15, bearing seat, 16, synchronous belt pinch roller, 17, first synchronous wheel, 18, second synchronous wheel, 19, synchronous belt, 20, machine base, 21, first rotating shuttle gear, 22, rotating shuttle, 23, installation cavity, 24, first main transmission shaft, 25, line pressing piece, 26, tooth rack, 27, guide groove, 28, connecting base, 29, second main transmission shaft, 30 and opening.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; may be mechanically coupled, directly coupled, or indirectly coupled through an intermediary. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Example 1
As shown in fig. 1 and 2; the invention provides a transmission structure of a sewing machine, comprising: the device comprises a gear cover 1, a belt transmission mechanism 100, a rotating shuttle mechanism 200, a line pressing mechanism 300, a crank transmission mechanism 400, a stand 20 and a needle plate 13; the belt drive mechanism comprises a lower shaft 14 and a first main drive shaft 24; one end of the lower shaft is provided with a first synchronous wheel 17 which is parallel to the lower shaft; one end of the first transmission main shaft is provided with a first rotating shuttle gear 21, and the other end of the first transmission main shaft is provided with a second synchronous wheel 18; the first rotating shuttle gear is used for being in transmission connection with a machine head power device, and drives a first transmission main shaft to rotate under the driving of the machine head power device, and the first synchronizing wheel is in transmission connection with a second synchronizing wheel adjacent to the first synchronizing wheel through a synchronous belt; one end of the lower shaft, which is far away from the first synchronous wheel, is provided with a second rotating shuttle gear 2; the second rotating shuttle gear is used for driving the rotating shuttle mechanism to move. The lower shaft is provided with a bearing seat, and a bearing 15 is arranged in the bearing seat. And a synchronous belt tight pulley 16 is arranged on the bearing seat, the synchronous belt tight pulley is arranged at the end part of the second synchronous pulley, and the other end of the synchronous belt tight pulley is used for pressing a synchronous belt. The transmission structure of the sewing machine further comprises a second main transmission shaft 29, and one end of the second main transmission shaft is in transmission connection with the machine head power device and used for swinging up and down under the driving of the machine head power device. The other end of the second main transmission shaft is provided with a connecting seat 28.
The rotating shuttle mechanism is arranged below the needle plate; the rotating shuttle mechanism comprises a third rotating shuttle gear 3 meshed with the second rotating shuttle gear, a rotating shuttle shaft 5, a rotating shuttle seat 8 and a gear cover 1, the rotating shuttle shaft penetrates into the third rotating shuttle gear and is fixedly connected with the third rotating shuttle gear, the top of the rotating shuttle shaft is also in transmission connection with a rotating shuttle 22, and the rotating shuttle shaft is arranged on a bearing 4; the third rotating shuttle gear and the rotating shuttle shaft are arranged in the gear cover 1. And a rotating shuttle seat door 8 is arranged on one side of the rotating shuttle seat, a positioning hook 7 is arranged on the upper part of the rotating shuttle seat door, and one end of the positioning hook is arranged on the side wall of the rotating shuttle seat through a fastening piece. The middle part of the gear cover is provided with an installation cavity 23, and one side wall of the gear cover is provided with an opening 30; the third rotating shuttle gear and the rotating shuttle shaft are arranged in the mounting cavity; the gear cover is provided with an outer side wall which is attached to the inner side wall of the rotating shuttle seat. The second rotating shuttle gear extends into the opening and engages the third rotating shuttle gear.
The thread pressing mechanism comprises a thread pressing piece 25 and a tooth frame 26 which are arranged at the bottom of the needle plate, the thread pressing piece is fixedly connected with the tooth frame, and a guide groove 27 is arranged in the tooth frame. One end of the second main transmission shaft is inserted into the lower part of the connecting seat, and the upper part of the connecting seat is hinged with the tooth rack and used for driving the tooth rack to swing up and down. The belt transmission mechanism, the crank transmission mechanism and the second main transmission shaft are all installed in the machine base, and the needle seat of the belt transmission mechanism, the crank transmission mechanism and the second main transmission shaft is installed at the top of the machine base.
The crank transmission mechanism comprises a first crank 11, a connecting rod 10 and a second crank 9, and the first crank is in transmission connection with the second crank through the connecting rod; the tail end of the first crank is provided with a sliding column; the sliding column is inserted into the tooth rack and moves along the guide groove under the driving of the first crank. The second crank is in transmission connection with a handpiece power device. The second crank is rotatably connected to the connecting rod by a connecting rod pin 12.
In the implementation of the embodiment, the belt transmission mechanism and the crank transmission mechanism are driven by the machine head driving device at the same time, and the first main transmission shaft and the second main transmission shaft move, so that the crank transmission mechanism is matched with the second rotating transmission shaft and skillfully combined together to regulate and control the periodic up-and-down swing of the line pressing piece; during the process, a first transmission main shaft and a lower shaft are in transmission connection through a synchronous belt, so that a first rotating shuttle gear rotates, and a second rotating shuttle gear is driven to rotate by the first rotating shuttle gear; the second rotating shuttle gear rotates to drive the third rotating gear to move.
The above embodiments are only used for illustrating the present invention, and the structure, connection mode and the like of each component can be changed, and all equivalent changes and improvements made on the basis of the technical scheme of the present invention should not be excluded from the protection scope of the present invention.
Claims (8)
1. A sewing machine transmission structure, characterized by comprising: a rotating shuttle mechanism arranged below the needle plate; the rotating shuttle mechanism comprises a third rotating shuttle gear, a rotating shuttle shaft, a gear cover and a rotating shuttle seat, the rotating shuttle shaft penetrates into the third rotating shuttle gear and is fixedly connected with the third rotating shuttle gear, and the top of the rotating shuttle shaft is also in transmission connection with the rotating shuttle; the middle part of the gear cover is provided with an installation cavity, and one side wall of the gear cover is provided with an opening; the third rotating shuttle gear and the rotating shuttle shaft are arranged in the mounting cavity; the gear cover is provided with an outer side wall which is attached to the inner side wall of the rotating shuttle seat; and a rotating shuttle seat door is arranged on one side of the rotating shuttle seat, a positioning hook is arranged on the upper part of the rotating shuttle seat door, and one end of the positioning hook is arranged on the side wall of the rotating shuttle seat through a fastening piece.
2. The sewing machine drive of claim 1, further comprising a belt drive comprising a lower shaft and a first main drive shaft; one end of the lower shaft is provided with a first synchronous wheel; one end of the first transmission main shaft is provided with a first rotating shuttle gear, and the other end of the first transmission main shaft is provided with a second synchronizing wheel; the first rotating shuttle gear is used for being in transmission connection with a machine head power device, and drives a first transmission main shaft to rotate under the driving of the machine head power device, and the first synchronizing wheel is in transmission connection with a second synchronizing wheel adjacent to the first synchronizing wheel through a synchronous belt; a second rotating shuttle gear is arranged at one end of the lower shaft far away from the first synchronous wheel; the second rotating shuttle gear extends into the opening and engages the third rotating shuttle gear.
3. The transmission structure of a sewing machine according to claim 2, wherein a bearing seat is installed on the lower shaft, a synchronous belt pressing wheel is installed on the bearing seat, the synchronous belt pressing wheel is installed at an end portion of the second synchronous wheel, and the other end of the synchronous belt pressing wheel is used for pressing the synchronous belt.
4. The sewing machine drive arrangement of claim 2, further comprising a thread press mechanism; the wire pressing mechanism comprises a wire pressing sheet and a tooth frame which are arranged at the bottom of the needle plate, the wire pressing sheet is fixedly connected with the tooth frame, and a guide groove is formed in the tooth frame.
5. The transmission structure of the sewing machine according to claim 3, further comprising a crank transmission mechanism, wherein the crank transmission mechanism comprises a first crank, a connecting rod and a second crank, and the first crank is in transmission connection with the second crank through the connecting rod; the tail end of the first crank is provided with a sliding column; the sliding column is inserted into the tooth rack and moves along the guide groove under the driving of the first crank.
6. The transmission structure of sewing machine according to claim 4 or 5, further comprising a second main transmission shaft, one end of the second main transmission shaft is in transmission connection with the head power device and is used for swinging up and down under the driving of the head power device.
7. The transmission structure of sewing machine according to claim 6, wherein the second main transmission shaft is provided at the other end thereof with a connecting seat, one end of the second main transmission shaft is inserted into a lower portion of the connecting seat, and an upper portion of the connecting seat is hinged with the tooth holder for driving the tooth holder to swing up and down.
8. The transmission structure of a sewing machine according to claim 7, further comprising a frame, wherein the belt transmission mechanism, the crank transmission mechanism and the second main transmission shaft are installed in the frame, and the needle bed thereof is installed on the top of the frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911059056.3A CN110699874B (en) | 2019-11-01 | 2019-11-01 | Transmission structure of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911059056.3A CN110699874B (en) | 2019-11-01 | 2019-11-01 | Transmission structure of sewing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110699874A true CN110699874A (en) | 2020-01-17 |
| CN110699874B CN110699874B (en) | 2021-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911059056.3A Active CN110699874B (en) | 2019-11-01 | 2019-11-01 | Transmission structure of sewing machine |
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| CN (1) | CN110699874B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111118769A (en) * | 2020-03-23 | 2020-05-08 | 浙江镨美科智能刺绣设备有限公司 | Multi-head rotating shuttle driving system |
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| CN110699874B (en) | 2021-04-09 |
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