CN210975108U - Transmission structure of sewing machine - Google Patents
Transmission structure of sewing machine Download PDFInfo
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- CN210975108U CN210975108U CN201921867253.3U CN201921867253U CN210975108U CN 210975108 U CN210975108 U CN 210975108U CN 201921867253 U CN201921867253 U CN 201921867253U CN 210975108 U CN210975108 U CN 210975108U
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- crank
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Abstract
The utility model provides a pair of sewing machine transmission structure, include: 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 utility model improves the structure of the gear cover, reduces the structure of the gear cover, and further reduces 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 utility model relates to a sewing machine device field, concretely relates to sewing machine transmission structure.
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 utility model aims at providing a sewing machine transmission structure has solved current sewing machine's drive mechanism, and overall structure size is big, the unsuitable defect of the processing of specific products that the size is less such as children's shoes.
(II) technical scheme
In order to solve the technical problem, the utility model provides a pair of sewing machine transmission structure, include: 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 utility model improves the structure of the gear cover, reduces the structure of the gear cover, and further reduces 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 main transmission shaft is provided with a first rotating shuttle gear, and the other end of the first main transmission 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 main transmission 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 utility model discloses well synchronous belt transmission connects first final drive shaft and installs the lower shaft on same frame side by side, and its belt stroke is short, and transmission interlock resistance is little, and the transmission process is sensitive, has reduced holistic width, and overall structure size is little, and its length that adopts the hold-in range is shorter, can effectively reduce displacement and loss that the belt overlength leads to, because longer hold-in range live time is of a specified duration, hold-in range (rubber) elasticity will worsen, easily lax and take place the phenomenon of skidding; 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 utility model discloses set up the hold-in range next-door neighbour, can take place lax phenomenon after the hold-in range uses for a long time, can make it push down the hold-in range through adjusting hold-in range tight pulley for the further tensioning of hold-in range, phenomenon such as it can not appear skidding.
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 utility model provides a pair of sewing machine transmission structure, it has following advantage:
1. the utility model improves the structure of the gear cover, reduces the structure of the gear cover, and further reduces 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. The utility model discloses well synchronous belt transmission connects first final drive shaft and lower shaft, and its belt stroke is short, and transmission interlock resistance is little, and the transmission process is sensitive, has reduced holistic width, and overall structure size is little, and its length that adopts the hold-in range is shorter, can effectively reduce displacement and loss that the belt overlength leads to, because longer hold-in range live time is of a specified duration, hold-in range (rubber) elasticity will worsen, easily lax and take place the phenomenon of skidding; the whole feeding condition can be influenced, so that the short synchronous belt has good flexibility and longer service life.
3. The utility model discloses set up the hold-in range next-door neighbour, can take place lax phenomenon after the hold-in range uses for a long time, can make it push down the hold-in range through adjusting hold-in range tight pulley for the further tensioning of hold-in range, phenomenon such as it can not appear skidding.
Drawings
Fig. 1 is an exploded view of an embodiment 1 of a transmission structure of a sewing machine according to the present invention;
fig. 2 is a partially enlarged assembly view of the transmission structure of the sewing machine of the present invention, with the rotating shuttle mechanism removed, according to embodiment 1.
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 the embodiments of the present invention is provided with reference to 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, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present 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, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be mechanically coupled, directly coupled, or indirectly coupled through an intermediary. The specific meaning 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 utility model provides a pair of sewing machine transmission structure, include: 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 main transmission shaft is provided with a first rotating shuttle gear 21, and the other end of the first main transmission 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 main transmission 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, the first main transmission shaft and the lower shaft are in transmission connection through the synchronous belt, so that the first rotating shuttle gear rotates, and the second rotating shuttle gear is driven to rotate by the first rotating shuttle gear.
The above-mentioned embodiments are only used for explaining the present invention, wherein the structure, connection mode, etc. of each component can be changed, all the equivalent transformation and improvement performed on the basis of the technical solution 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.
2. The transmission structure of sewing machine according to claim 1, wherein a rotating shuttle seat door is installed at one side of the rotating shuttle seat, a positioning hook is installed at the upper part 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.
3. 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 main transmission shaft is provided with a first rotating shuttle gear, and the other end of the first main transmission 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 main transmission 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.
4. The sewing machine drive arrangement of claim 3, 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 4, 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 3, 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 |
|---|---|---|---|
| CN201921867253.3U CN210975108U (en) | 2019-11-01 | 2019-11-01 | Transmission structure of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921867253.3U CN210975108U (en) | 2019-11-01 | 2019-11-01 | Transmission structure of sewing machine |
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| Publication Number | Publication Date |
|---|---|
| CN210975108U true CN210975108U (en) | 2020-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921867253.3U Active CN210975108U (en) | 2019-11-01 | 2019-11-01 | Transmission structure of sewing machine |
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| CN (1) | CN210975108U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110699874A (en) * | 2019-11-01 | 2020-01-17 | 浙江龙泰缝纫设备有限公司 | Transmission structure of sewing machine |
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2019
- 2019-11-01 CN CN201921867253.3U patent/CN210975108U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110699874A (en) * | 2019-11-01 | 2020-01-17 | 浙江龙泰缝纫设备有限公司 | Transmission structure of sewing machine |
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