CN213772481U - Sewing machine needle feeding mechanism and sewing machine thereof - Google Patents
Sewing machine needle feeding mechanism and sewing machine thereof Download PDFInfo
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- CN213772481U CN213772481U CN202021878827.XU CN202021878827U CN213772481U CN 213772481 U CN213772481 U CN 213772481U CN 202021878827 U CN202021878827 U CN 202021878827U CN 213772481 U CN213772481 U CN 213772481U
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- needle
- sewing machine
- feeding
- actuating mechanism
- feed
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Abstract
The utility model provides a sewing machine needle feeding mechanism, including a rotary drive device, needle pendulum actuating mechanism and pay-off actuating mechanism, rotary drive device's output shaft respectively with needle pendulum actuating mechanism, pay-off actuating mechanism are articulated mutually, the drive needle pendulum actuating mechanism and pay-off actuating mechanism move. The utility model also provides a sewing machine, including aforementioned sewing machine needle send mechanism. The utility model discloses an useful part lies in, only drives needle pendulum actuating mechanism and pay-off actuating mechanism through a rotary driving device, has realized the synchronization action of needle bar swing and pay-off tooth pay-off, and the cost is reduced is convenient for adjust the relative position between eedle and the pay-off tooth simultaneously.
Description
Technical Field
The utility model relates to a sewing machine technical field especially relates to a sewing machine needle feeding mechanism and sewing machine thereof.
Background
Most sewing machine's needle pendulum mechanism all adopts mechanical transmission mode to realize the needle bar swing in the existing market to the gauge needle size also is through mechanical adjustment, can't realize accurate regulation. Chinese utility model patent CN209428732U discloses a sewing machine operating mechanism, it adopts needle pendulum step motor control needle pendulum drive mechanism, and pay-off step motor control pay-off drive mechanism even use two motors to come independent control needle pendulum mechanism and feeding mechanism respectively, and the cost is higher, also requires higher to the synchronism between needle pendulum mechanism and the feeder in addition.
SUMMERY OF THE UTILITY MODEL
In view of the above, the technical problem to be solved of the present invention is to provide a sewing machine needle feeding mechanism driven by only one rotary driving device, which reduces the requirement for the synchronism of the needle swing mechanism and the feeding structure while reducing the cost.
The utility model provides a sewing machine needle feeding mechanism, including a rotary drive device, needle pendulum actuating mechanism and pay-off actuating mechanism, rotary drive device's output shaft respectively with needle pendulum actuating mechanism, pay-off actuating mechanism are articulated mutually, the drive needle pendulum actuating mechanism and pay-off actuating mechanism move.
Preferably, the rotary drive device is fixedly mounted on a housing of the sewing machine.
Preferably, the rotary drive is a stepper motor.
Preferably, a needle feeding crank is fixedly mounted on an output shaft of the rotary driving device, the needle feeding crank is hinged to the lower end of a needle feeding connecting rod, and the upper end of the needle feeding connecting rod is hinged to the needle swing executing mechanism and the feeding executing mechanism respectively.
Preferably, the upper end of the needle feeding connecting rod is hinged with a needle feeding rear crank in the needle swing executing mechanism.
Preferably, the upper end of the needle feeding connecting rod is hinged with the upper end of a feeding connecting rod in the feeding actuating mechanism.
Preferably, the needle feeding lower crank in the feeding actuating mechanism is provided with an adjusting groove, and the lower end of the feeding connecting rod is hinged with the adjusting groove through an adjusting stud.
Preferably, a first pair of bit lines is arranged on the needle feeding crank, and a second pair of bit lines is arranged on the adjusting stud.
The utility model also provides a sewing machine, including aforementioned sewing machine needle send mechanism.
The utility model discloses an useful part lies in, only drives needle pendulum actuating mechanism and pay-off actuating mechanism through a rotary driving device, has realized the synchronization action of needle bar swing and pay-off tooth pay-off, and the cost is reduced is convenient for adjust the relative position between eedle and the pay-off tooth simultaneously.
Drawings
FIG. 1 is a schematic view of a sewing machine;
FIG. 2 is a schematic structural view of the needle feeding mechanism of the present invention;
FIG. 3 is a schematic diagram of the needle swing actuator and the feed actuator;
fig. 4 is a schematic view of a connection structure at the rotation driving means;
FIG. 5 is a schematic view of the connection at the needle delivery crank;
fig. 6 is a schematic view of the needle feed crank.
Element number description:
1 case
2 base plate
3 Upper shaft
4 rotation driving device
5-needle crank
6 first nut
7-axis retainer ring
8 eccentric cam of lifting tooth
9-needle delivery rear crank
10 feeding connecting rod
11 lifting tooth shaft
12 lifting tooth connecting rod
13 feeding shaft
14-needle feeding crank
141 regulating groove
142 first pair of bit lines
15 needle feeding shaft
16 slide block guide rail
17 needle feeding crank
18 needle bar support pendulum shaft
19 needle bar support
20 needle bar
21 feeding tooth
22 lifting teeth fork shaped crank
23 dental articulator assembly
24 dental articulator holder
25 second nut
26 second axial screw
27 third nut
28 adjusting stud
281 second pair of bit lines
29 fastening screw
30 first axial position screw
31 spacer washer
32-needle feeding connecting rod
33 needle bar connecting column
34 needle bar slide block
35 drive link
36 thread take-up assembly
37 gasket
38 needle feeding front crank
39 drive link pin
40 lifting rock shaft crank
Detailed Description
The following describes the present invention in further detail with reference to the accompanying drawings. These embodiments are provided only for illustrating the present invention and are not intended to limit the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "inner", "outer", etc. indicate the orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" 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 "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
As shown in fig. 1, the present invention provides a sewing machine, which comprises a housing 1 fixedly installed on a base plate 2, and an upper shaft 3 rotatably installed on the housing 1. As shown in fig. 1 and 2, the utility model also provides a sewing machine needle feeding mechanism of setting in casing 1, this needle feeding mechanism includes a rotary driving device 4, needle pendulum actuating mechanism and pay-off actuating mechanism, and rotary driving device 4's output shaft is articulated mutually with needle pendulum actuating mechanism, pay-off actuating mechanism respectively, drives needle pendulum actuating mechanism and pay-off actuating mechanism and moves. Wherein the rotation driving device 4 is preferably a stepping motor and is fixedly mounted on the housing 1.
As shown in fig. 2 and 3, the needle swing actuator of the present invention includes a needle feeding shaft 15, a needle feeding rear crank 9 and a needle feeding front crank 38 respectively provided at both ends of the needle feeding shaft 15, a driving link 35, a slider rail 16, a needle bar support swing shaft 18, a needle bar support 19, and a needle bar 20. Wherein, the needle feeding shaft 15 and the needle bar support pendulum shaft 18 are respectively and rotatably arranged on the machine shell 1, the needle bar support 19 is fixedly arranged on the needle bar support pendulum shaft 18, and the needle bar 20 is sleeved in the hole of the needle bar support 19 and can slide up and down along the axial direction thereof. One end of the slider guide 16 is fixedly mounted to the needle bar support swing shaft 18, the other end is hinged to one end of the drive link 35, and the other end of the drive link 35 is hinged to the needle feed front crank 38 through a drive link pin 39. Therefore, when the needle feed shaft 15 swings around the shaft center, the slider rail 16 and the needle bar holder 19 can be driven by the drive link 35 to swing back and forth around the shaft center of the needle bar holder swing shaft 18, thereby driving the needle bar 20 to swing.
Further, a needle bar connecting post 33 is fixedly mounted on the needle bar 20, the shaft end of the needle bar connecting post 33 passes through the corresponding hole of the thread take-up assembly 36 and is hinged with the needle bar slider 34, and the needle bar slider 34 is arranged in the slider guide 16 and can slide up and down along the groove. The needle rod crank 17 is fixedly arranged on the upper shaft 3, the thread picking assembly 36 is hinged with the needle rod crank 17, when the upper shaft 3 rotates, the needle rod crank 17 can drive the thread picking assembly 36 to reciprocate up and down, and further the needle rod connecting column 33 can drive the needle rod 20 to move up and down in the hole of the needle rod bracket 19, so that the cloth pricking action is realized.
As shown in fig. 2 and 3, the feeding actuator of the present invention includes a feed lifting shaft 11, a feeding shaft 13, a feed lifting crank 40, a rack seat 24, a needle feeding lower crank 14, a feeding link 10, a rack assembly 23, a feeding tooth 21, and a feed lifting fork crank 22. Wherein the feed shaft 13 and the feed shaft 11 are rotatably mounted in the housing 1, respectively. The feed lifting rock eccentric wheel 8 is fixedly arranged on the upper shaft 3, one end of a feed lifting rock connecting rod 12 is sleeved on the feed lifting rock eccentric wheel 8, the axial movement of the feed lifting rock connecting rod is limited by a shaft retainer ring 7, but the radial rotation of the feed lifting rock connecting rod is not influenced, and the other end of the feed lifting rock connecting rod 12 is hinged with a feed lifting crank 40. The feed lifting fork-shaped crank 22 and the feed lifting fork-shaped crank 40 are respectively and fixedly arranged at two ends of the feed lifting shaft 11, and the fork-shaped end of the feed lifting fork-shaped crank 22 is hinged with one end of the dental frame component 23. The feeding tooth 21 is fixedly arranged on a tooth frame component 23, the needle feeding lower crank 14 and the tooth frame seat 24 are respectively and fixedly arranged at two ends of the feeding shaft 13, and the tooth frame seat 24 is hinged with the other end of the tooth frame component 23. When the upper shaft 3 rotates, the upper shaft drives the feed lifting rock shaft 11 to swing through the feed lifting rock connecting rod 12, and the feed lifting rock fork-shaped crank 22 enables the feed lifting rock assembly 23 to move up and down; when the feeding shaft 13 rotates back and forth, the rack assembly 23 can be driven to move left and right, and then cloth feeding action is realized.
As shown in fig. 2 and 4, a needle feed crank 5 is fixedly mounted on an output shaft of the rotary drive device 4, and can rotate back and forth along with the protruding shaft. The needle feeding crank 5 is hinged with the lower end of the needle feeding connecting rod 32 through a first axial screw 30, and a first nut 6 is arranged at the thread extending end of the first axial screw 30 to prevent loosening. The upper end of the needle feeding connecting rod 32 is respectively hinged with the needle swing actuating mechanism and the feeding actuating mechanism. In the specific implementation, the upper end of the needle feeding connecting rod 32 and the upper end of the feeding connecting rod 10 are hinged with the needle feeding back crank 9 through a second axial screw 26, and a second nut 25 is arranged at the threaded protruding end of the second axial screw 26 to prevent loosening. A spacer washer 31 is provided between the needle feed link 32 and the feed link 10 to prevent interference caused by direct contact between the two links. As shown in fig. 2, 4, 5 and 6, the needle feeding crank 14 is provided with an adjusting groove 141, and the lower end of the feeding link 10 is hinged to the adjusting groove 141 through an adjusting stud 28, a fastening screw 29, a washer 37 and a third nut 27. Preferably, the needle feed crank 14 is provided with a first pair of feed lines 142, and the adjusting stud 28 is provided with a second pair of feed lines 281, so that the feed dog 21 and the needle in the needle bar 20 are in a theoretical ideal position when the first pair of feed lines 142 and the second pair of feed lines 281 are aligned. The operator can adjust the position of the adjusting stud 28 in the adjusting groove 141 according to the requirement, thereby realizing the relative position adjustment of the feeding tooth 21 and the needle in the needle rod 20.
As shown in fig. 2-4, the working principle of the present invention is: when the extension shaft of the rotary driving device 4 rotates, the needle feeding crank 5 mounted on the extension shaft swings back and forth with it, drives the hinged needle feeding connecting rod 32 to rotate together, and drives the needle feeding shaft 15 to rotate through the needle feeding rear crank 9 fixed on the needle feeding shaft 15, thereby driving the needle feeding front crank 38 fixed on the needle feeding shaft 15 to swing. The needle feeding front crank 38 drives the slider guide 16 to swing back and forth by taking the axis of the needle bar support swing shaft 18 as the center through the hinged driving connecting rod 35, and drives the needle bar 20 to swing; the upper shaft 3 and the needle rod crank 17 rotate together under the action of the power source, and the needle rod 20 is driven to move up and down through the thread take-up assembly 36 and the needle rod connecting column 33. Meanwhile, the needle feeding connecting rod 32 drives the feeding shaft 13 to swing through the feeding connecting rod 10, and the feeding shaft 13 drives the rack assembly 23 and the feeding teeth 21 to reciprocate back and forth. Through the connection structure, the machine needle in the needle rod 20 and the feeding tooth 21 synchronously move along the cloth feeding direction, and the needle pitch can be synchronously adjusted by adjusting the electric control parameters to change the swing angle of the output shaft of the rotary driving device 4.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.
Claims (8)
1. The needle feeding mechanism of the sewing machine is characterized by comprising a rotary driving device (4), a needle pendulum actuating mechanism and a feeding actuating mechanism, wherein a needle feeding crank (5) is fixedly installed on an output shaft of the rotary driving device (4), the needle feeding crank (5) is hinged to the lower end of a needle feeding connecting rod (32), and the upper end of the needle feeding connecting rod (32) is hinged to the needle pendulum actuating mechanism and the feeding actuating mechanism respectively to drive the needle pendulum actuating mechanism and the feeding actuating mechanism to move.
2. A sewing machine feed mechanism according to claim 1, characterized in that the rotary drive (4) is fixedly mounted on the machine housing (1) of the sewing machine.
3. A sewing machine feed mechanism according to claim 1, characterized in that the rotary drive means (4) is a stepper motor.
4. The needle feed mechanism of a sewing machine according to claim 1, wherein the upper end of the needle feed link (32) is hinged to a needle feed back crank (9) in the needle swing actuator.
5. The needle feed mechanism of a sewing machine according to claim 1, wherein the upper end of the needle feed link (32) is hinged to the upper end of the feed link (10) in the feed actuator.
6. The needle feed mechanism of sewing machine according to claim 5, characterized in that the needle feed crank (14) of the feed actuator is provided with an adjusting groove (141), and the lower end of the feed link (10) is hinged with the adjusting groove (141) through an adjusting stud (28).
7. The needle feed mechanism of a sewing machine according to claim 6, wherein the needle feed crank (14) has a first pair of position lines (142) and the adjusting stud (28) has a second pair of position lines (281).
8. A sewing machine comprising a sewing machine feed mechanism according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021878827.XU CN213772481U (en) | 2020-09-01 | 2020-09-01 | Sewing machine needle feeding mechanism and sewing machine thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021878827.XU CN213772481U (en) | 2020-09-01 | 2020-09-01 | Sewing machine needle feeding mechanism and sewing machine thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213772481U true CN213772481U (en) | 2021-07-23 |
Family
ID=76903448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021878827.XU Active CN213772481U (en) | 2020-09-01 | 2020-09-01 | Sewing machine needle feeding mechanism and sewing machine thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213772481U (en) |
-
2020
- 2020-09-01 CN CN202021878827.XU patent/CN213772481U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 318010 No. 1008, east section of Donghai Avenue, Sanjia, Jiaojiang District, Taizhou City, Zhejiang Province Patentee after: Jack Technology Co.,Ltd. Address before: 318010 No. 1008, east section of Donghai Avenue, Sanjia, Jiaojiang District, Taizhou City, Zhejiang Province Patentee before: JACK SEWING MACHINE Co.,Ltd. |
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| CP01 | Change in the name or title of a patent holder |