CN203270246U - Needle rod driving mechanism of sewing machine - Google Patents
Needle rod driving mechanism of sewing machine Download PDFInfo
- Publication number
- CN203270246U CN203270246U CN 201320273809 CN201320273809U CN203270246U CN 203270246 U CN203270246 U CN 203270246U CN 201320273809 CN201320273809 CN 201320273809 CN 201320273809 U CN201320273809 U CN 201320273809U CN 203270246 U CN203270246 U CN 203270246U
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- China
- Prior art keywords
- needle bar
- shank
- needle rod
- crank
- slider
- 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.)
- Expired - Lifetime
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Abstract
The utility model discloses a needle rod driving mechanism of a sewing machine. The needle rod driving mechanism of the sewing machine comprises a needle rod, a needle rod support, a vertically-driving mechanism capable of driving the needle rod to vertically slide in the needle rod support and a laterally-swing mechanism driving the needle rod support to swing. A swing supporting point is arranged at the upper end of the needle rod support. The vertically-driving mechanism comprises a needle rod connecting rod. A front sliding block and a rear sliding block are arranged at the front side and the rear side of the lower end of the needle rod connecting rod respectively. The needle rod is fixedly connected with a needle rod connecting block. The needle rod connecting block is connected with the front sliding block through a front sliding groove in the lateral direction. The needle rod connecting block is further provided with a side sliding block. The side sliding block is in sliding fit with a side sliding groove formed in the needle rod support. The needle rod driving mechanism of the sewing machine further comprises a fixedly-installed rear guiding board. A rear sliding groove matched with the rear sliding block is formed in the rear guiding board. According to the needle rod driving mechanism of the sewing machine, the requirement for assembly is low, the machining requirements of parts are low, and repair is convenient.
Description
Technical field
The utility model relates to a kind of Sewing machines, is specifically related to the needle bar drive device of Sewing machines.
Background technology
In Sewing machines, eedle generally is arranged on the lower end of shank, and shank is connected with driving mechanism, drives eedle and pumps.In some Sewing machines, in lockstitch button holder, eedle is except moving up and down, also to swing, and in the process of keyhole, the amplitude that eedle swings not is unalterable, and this swings with regard to needing a complicated swing mechanism of cover to drive shank.
a kind of needle bar drive device of Sewing machines is disclosed as Chinese utility model patent CN 201120279439.4, comprise shank, needle bar frame, drive the left-right swinging mechanism that driving mechanism up and down that described shank slides up and down and driving needle bridge swing in needle bar frame, the upper end of needle bar frame is provided with the swing fulcrum, wherein the up and down driving mechanism comprises a driving shaft, the end of driving shaft is fixedly connected with a needle bar crank, needle bar crank is connected with a thread take-up crank, one end of thread take-up crank and a shank connecting rod is hinged, the other end of shank connecting rod is connected with shank by bearing pin, be arranged with front-slider and rear slider on described bearing pin, front-slider and rear slider lay respectively at the shank connecting rod before, rear both sides, also comprise with described before, the front chute that rear slider is slidably matched and rear chute, front chute and the fixed installation of rear chute.
But this mechanism is higher to the part processing request, and cost of parts is high, and matching requirements are higher, and it is not too convenient to keep in repair, and therefore awaits further perfect.
The utility model content
The technical problems to be solved in the utility model is to provide the needle bar drive device of a kind of cost Sewing machines lower, easy to maintenance, to overcome the defects of prior art.
in order to solve the problems of the technologies described above, the utility model adopts following technical scheme: a kind of needle bar drive device of Sewing machines, comprise shank, needle bar frame, drive the left-right swinging mechanism that driving mechanism up and down that described shank slides up and down and driving needle bridge swing in needle bar frame, the upper end of needle bar frame is provided with the swing fulcrum, described up and down driving mechanism comprises a shank connecting rod, before shank connecting rod lower end, rear both sides are respectively equipped with front-slider and rear slider, described shank is fixedly connected with a shank contiguous block, front chute by a left and right directions between shank contiguous block and front-slider is connected, also be provided with a side slide on the shank contiguous block, a sideslip groove on described side slide and needle bar frame is slidably matched, also comprise a hard-wired rear deflector, rear deflector is provided with the rear chute that matches with described rear slider.
Preferably, also comprise a front guide plate, described front guide plate is fixedly mounted on needle bar frame, and described sideslip groove is arranged on front guide plate.
Preferably, described rear chute and sideslip groove are offered along the vertical direction.
Preferably, the lower end of described shank connecting rod is fixedly connected with a bearing pin, and described front-slider and rear slider are set in respectively the two ends of bearing pin.
Preferably, described shank connecting rod is connected with the bearing pin one.
Preferably, described left-right swinging mechanism comprises a motor, be fixedly connected with the first crank on motor shaft, one end of the first crank and balancing point connecting rod is hinged, the other end of balancing point connecting rod and the second crank are hinged, and the second crank is fixedly connected with an end of balance staff, and the other end of balance staff is fixedly connected with a swing arm, be connected with the balancing point slide block in swing arm, the balancing point slide block is slidably matched with the balancing point chute that is arranged on needle bar frame.
Preferably, described front chute is arranged on the shank contiguous block, and described front-slider and front chute are slidably matched.
Preferably, described front chute is arranged on front-slider, and described shank contiguous block and front chute are slidably matched.
Preferably, described up and down driving mechanism also comprises a driving shaft, and the end of driving shaft is fixedly connected with a needle bar crank, and needle bar crank is connected with a thread take-up crank, and the upper end of thread take-up crank and described shank connecting rod is hinged.
Compared with prior art, the utlity model has following beneficial effect: the shank connecting rod coordinates with rear chute by rear slider, under the restriction of rear chute, the lower end of shank connecting rod can only be done rectilinear motion along the vertical direction, and drive shank and move up and down by front-slider, shank contiguous block, this structure is less demanding to assembling, and is lower to the processing request of the parts such as front-slider, rear slider, shank contiguous block and rear deflector, thereby reduced the manufacturing cost of part, also convenient during maintenance.
Description of drawings
Fig. 1 is the STRUCTURE DECOMPOSITION schematic diagram of the needle bar drive device of a kind of Sewing machines of the utility model.
Fig. 2 is a partial side view of the needle bar drive device of a kind of Sewing machines of the utility model.
In figure: 1, shank 2, needle bar frame 3, connecting pin
10, up and down driving mechanism 11, driving shaft 12, needle bar crank
13, thread take-up crank 14, shank connecting rod 15, shank contiguous block
16, front-slider 17, rear slider 18, rear deflector
19, front guide plate 20, left-right swinging mechanism 21, motor
22, the first crank 23, balancing point connecting rod 24, the second crank
25, balance staff 26, swing arm 27, balancing point slide block
28, balancing point chute 141, bearing pin 151, front chute
152, side slide 181, rear chute 182, screw
191, sideslip groove 192, screw 211, installing plate
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, those skilled in the art can more clearly understand other advantages of the present utility model and effect thus.
Need to prove, the structure that Figure of description illustrates, ratio, size etc. only in order to coordinate the specific embodiment, more clearly understand design of the present utility model for those skilled in the art, are not to limit protection domain of the present utility model.The adjustment of the modification of any structure, the change of proportionate relationship or size, in the situation that do not affect effect of the present utility model and purpose is reached, within all should still dropping on protection domain of the present utility model.For convenience of description, the relative position relation of each parts is that the Butut mode according to Figure of description is described, as: the position relationship of forward and backward, upper and lower, left and right etc. is to determine according to the Butut direction of Figure of description.
As shown in Figure 1, the shank 1 of Sewing machines is arranged in needle bar frame 2, the upper end of needle bar frame 2 is arranged on a connecting pin 3, needle bar drive device of the present utility model comprises up and down driving mechanism 10 and left-right swinging mechanism 20, up and down driving mechanism 10 can drive shank 1 and slide up and down in needle bar frame 2, but left-right swinging mechanism 20 driving needle bridges 2 swing as swinging fulcrum take connecting pin 3.
As shown in Figure 1 and Figure 2, up and down driving mechanism 10 comprises a driving shaft 11, the end of driving shaft 11 is fixedly connected with a needle bar crank 12, needle bar crank 12 is connected with a thread take-up crank 13, the upper end of thread take-up crank 13 and a shank connecting rod 14 is hinged, the lower end of shank connecting rod 14 is fixedly connected with a bearing pin 141, and the two ends of bearing pin 141 are a sheathed front-slider 16 and a rear slider 17 respectively, and front-slider 16 and rear slider 17 lay respectively at the forward and backward both sides of shank connecting rod 14.Shank connecting rod 14 is preferably one with bearing pin 141 and is connected.
Be fixedly connected with a shank contiguous block 15 on described shank 1, the front chute 151 by a left and right directions between shank contiguous block 15 and front-slider 16 is connected.Front chute 151 can be arranged on shank contiguous block 15, also be provided with a side slide 152 on shank contiguous block 15, front chute 151 is offered along left and right directions, described front-slider 16 can have horizontally slipping of certain limit in front chute 151, side slide 152 is slidably matched with a sideslip groove 191, in preferred embodiment of the present utility model, sideslip groove 191 is opened on a front guide plate 19 along the vertical direction, and front guide plate 19 is fixedly mounted on needle bar frame 2 by screw 192.Obviously, front chute 151 also can be arranged on front-slider 16, and shank contiguous block 15 some can insert in front chute 151, be slidably matched with it.
A rear deflector 18 is fixedly mounted on by screw 182 on the casing of Sewing machines, and rear deflector 18 is provided with the rear chute 181 that matches with described rear slider 17, and rear chute 181 is also offered along the vertical direction.When driving shaft 11 drives bearing pin 141 motion by above-mentioned toggle, under the restriction of rear chute 181, bearing pin 141 can only be done rectilinear motion along the vertical direction, and bearing pin 141 drives shank 1 and moves up and down in needle bar frame 2 by front-slider 16, shank contiguous block 15 again.Side slide 152 on the shank contiguous block also moves up and down in sideslip groove 191, rotates to stop shank 1, guarantees the reliable connection that front-slider 16 is connected with the shank contiguous block.
Left-right swinging mechanism 20 comprises a motor 21, motor 21 is fixedly mounted on the casing of Sewing machines by an installing plate 211, be fixedly connected with the first crank 22 on motor shaft, the first crank 22 is hinged with an end of balancing point connecting rod 23, the other end of balancing point connecting rod 23 and the second crank 24 are hinged, the second crank 24 is fixedly connected with an end of balance staff 25, the other end of balance staff 25 is fixedly connected with a swing arm 26, be connected with balancing point slide block 27 in swing arm 26, balancing point slide block 27 is slidably matched with the balancing point chute 28 that is arranged on needle bar frame 2.When motor 21 drove 27 motion of balancing point slide block by toggle, balancing point slide block 27 drives needle bar frame 2 and shank 1 swings together, allows that simultaneously balancing point slide block 27 certain limit in balancing point chute 28 moves up and down.
Claims (9)
1. the needle bar drive device of a Sewing machines, comprise shank (1), needle bar frame (2), drive the left-right swinging mechanism (20) that driving mechanism up and down (10) that described shank (1) slides up and down and driving needle bridge (2) swing in needle bar frame (2), the upper end of needle bar frame (2) is provided with the swing fulcrum, it is characterized in that, described up and down driving mechanism (10) comprises a shank connecting rod (14), before shank connecting rod (14) lower end, rear both sides are respectively equipped with front-slider (16) and rear slider (17), described shank (1) is fixedly connected with a shank contiguous block (15), front chute (151) by a left and right directions between shank contiguous block (15) and front-slider (16) is connected, also be provided with a side slide (152) on shank contiguous block (15), a sideslip groove (191) on described side slide (152) and needle bar frame (2) is slidably matched, also comprise a hard-wired rear deflector (18), rear deflector (18) is provided with the rear chute (181) that matches with described rear slider (17).
2. needle bar drive device according to claim 1, is characterized in that, also comprises a front guide plate (19), and described front guide plate (19) is fixedly mounted on needle bar frame (2), and described sideslip groove (191) is arranged on front guide plate (19).
3. needle bar drive device according to claim 1, is characterized in that, described rear chute (181) and sideslip groove (191) are offered along the vertical direction.
4. needle bar drive device according to claim 1, is characterized in that, the lower end of shank connecting rod (14) is fixedly connected with a bearing pin (141), and described front-slider (16) and rear slider (17) are set in respectively the two ends of bearing pin (141).
5. needle bar drive device according to claim 4, is characterized in that, described shank connecting rod (14) is connected with bearing pin (141) one.
6. needle bar drive device according to claim 1, it is characterized in that, described left-right swinging mechanism (20) comprises a motor (21), be fixedly connected with the first crank (22) on motor shaft, the first crank (22) is hinged with an end of balancing point connecting rod (23), the other end of balancing point connecting rod (23) and the second crank (24) are hinged, the second crank (24) is fixedly connected with an end of balance staff (25), the other end of balance staff (25) is fixedly connected with a swing arm (26), be connected with balancing point slide block (27) in swing arm (26), balancing point slide block (27) is slidably matched with the balancing point chute (28) that is arranged on needle bar frame (2).
7. needle bar drive device according to claim 1, is characterized in that, described front chute (151) is arranged on shank contiguous block (15), and described front-slider (16) is slidably matched with front chute (151).
8. needle bar drive device according to claim 1, is characterized in that, described front chute (151) is arranged on front-slider (16), and described shank contiguous block (15) is slidably matched with front chute (151).
9. needle bar drive device according to claim 1, it is characterized in that, described up and down driving mechanism (10) also comprises a driving shaft (11), the end of driving shaft (11) is fixedly connected with a needle bar crank (12), needle bar crank (12) is connected with a thread take-up crank (13), and thread take-up crank (13) is hinged with the upper end of described shank connecting rod (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320273809 CN203270246U (en) | 2013-05-17 | 2013-05-17 | Needle rod driving mechanism of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320273809 CN203270246U (en) | 2013-05-17 | 2013-05-17 | Needle rod driving mechanism of sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203270246U true CN203270246U (en) | 2013-11-06 |
Family
ID=49500693
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320273809 Expired - Lifetime CN203270246U (en) | 2013-05-17 | 2013-05-17 | Needle rod driving mechanism of sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203270246U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103276538A (en) * | 2013-05-17 | 2013-09-04 | 台州拓卡奔马机电科技有限公司 | Needle rod driving mechanism of sewing machine |
-
2013
- 2013-05-17 CN CN 201320273809 patent/CN203270246U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103276538A (en) * | 2013-05-17 | 2013-09-04 | 台州拓卡奔马机电科技有限公司 | Needle rod driving mechanism of sewing machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: TOPCUT-BULLMER MECHANICAL AND ELECTRICAL TECHNOLOG Free format text: FORMER NAME: TAIZHOU TOPCUT BULLMER MECHANICAL AND ELECTRICAL TECHNOLOGY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 317000 Taizhou, Jiangsu Province, the Yangtze River in the city of Jiangnan street, No. 71 River Road, No. 181, No. Patentee after: BULLMER ELECTROMECHANICAL TECHNOLOGY Co.,Ltd. Address before: 317000 Taizhou, Jiangsu Province, the Yangtze River in the city of Jiangnan street, No. 71 River Road, No. 181, No. Patentee before: TAIZHOU TOPCUT-BULLMER MECHANICAL AND ELECTRICAL TECHNOLOGY Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20131106 |
|
| CX01 | Expiry of patent term |