CN214362099U - Driving device for presser foot lifting and thread trimming of sewing machine - Google Patents
Driving device for presser foot lifting and thread trimming of sewing machine Download PDFInfo
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- CN214362099U CN214362099U CN202120068552.1U CN202120068552U CN214362099U CN 214362099 U CN214362099 U CN 214362099U CN 202120068552 U CN202120068552 U CN 202120068552U CN 214362099 U CN214362099 U CN 214362099U
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- sewing machine
- connecting rod
- driving arm
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Abstract
The utility model relates to a driving device for presser foot lifting and thread trimming of a sewing machine, which comprises a stepping motor and a motor mounting plate, wherein the stepping motor fixes the end part of a sewing machine body through the motor mounting plate, the axial direction of the stepping motor is horizontally arranged from front to back, an output shaft of the stepping motor is provided with a driving arm, the driving arm is provided with two output ends, and a first output end of the driving arm is movably connected with a presser foot lifting transmission mechanism through a first connecting rod; a convex column is arranged at the second output end of the driving arm, the convex column is accommodated in the first avoiding groove of the strip shape of the second connecting rod, and the end part of the second connecting rod is movably connected with the thread cutting transmission mechanism; install step motor at the tip of sewing machine body, set up the drive connecting plate at the sewing machine body back, trimming and pine line drive mechanism realize the linkage with the drive connecting plate for the structure is compacter, adopts to dodge the groove simultaneously and realizes lifting the separation of presser foot and trimming action, and the structure is more reasonable, has rational in infrastructure, reliable and stable characteristics.
Description
Technical Field
The utility model relates to a sewing machine technical field, concretely relates to sewing machine lifts drive arrangement of presser foot and trimming.
Background
The automatic thread trimming and presser foot lifting device of the existing sewing machine is split, the automatic thread trimming is realized by pushing thread trimming and resetting by an electromagnet or an air cylinder, the presser foot lifting is realized by driving the presser foot by another set of electromagnet or air cylinder in the same way, and the original driving source has the defects of complex installation and processing difficulty, high noise, instability and the like.
In order to solve the problems, a stepping motor is also adopted as a driving source on the market at present, the stepping motor drives a presser foot lifting transmission mechanism and a thread cutting transmission mechanism to complete presser foot lifting and thread cutting through a cam and a swing arm which are coaxially arranged, the thread cutting and the thread cutting are completed by one driving motor through the structure, the thread cutting and the thread cutting are not interfered with each other, but the axial direction of the stepping motor is vertically arranged with the back surface of a sewing machine body, the stepping motor protrudes outwards, and the arrangement mode of the stepping motor is more abrupt, the structure is not reasonable enough, and the appearance is not beautiful enough.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defect among the prior art, the utility model aims to provide a sewing machine lifts drive arrangement of presser foot and trimming installs step motor at the tip of sewing machine body, adds a drive connecting plate at the sewing machine body back, and trimming actuating mechanism and pine line actuating mechanism pass through the connecting plate and connect the linkage for the structure is compacter, simultaneously the utility model discloses a dodge the groove and realize lifting the separation of presser foot and trimming action, the structure is more reasonable, the utility model has the characteristics of rational in infrastructure, reliable and stable.
The technical scheme is adopted for realizing the purpose:
the utility model provides a drive arrangement that sewing machine lifted presser foot and cut off stitches which characterized in that: the sewing machine comprises a stepping motor and a motor mounting plate, wherein the stepping motor is used for fixing the end part of a sewing machine body through the motor mounting plate, the axial direction of the stepping motor is horizontally arranged in the front-back direction, a driving arm is arranged on an output shaft of the stepping motor, the driving arm is provided with two output ends, and a first output end of the driving arm is movably connected with a presser foot lifting transmission mechanism through a first connecting rod; the second output end of the driving arm is provided with a convex column which is accommodated in the strip-shaped first avoidance groove of the second connecting rod, and the end part of the second connecting rod is movably connected with the trimming transmission mechanism.
The thread cutting transmission mechanism comprises a driving connecting plate fixedly connected to a position, close to the motor mounting plate, on the back of the sewing machine, two guide plates perpendicular to the driving connecting plate are arranged on the driving connecting plate, guide holes are formed in the two guide plates, a driving rod penetrates through the two guide holes, two ends of the driving rod are hinged to the second connecting rod and the thread cutting connecting rod respectively, the thread cutting connecting rod is hinged to the input end of the thread cutting driving arm, and the output end of the thread cutting driving arm is connected with the thread cutting mechanism.
The thread trimming driving arm is longitudinally arranged, penetrates through a shaft hole of the thread trimming fixing seat, the thread trimming fixing seat is fixedly connected with the sewing machine body, an input driving arm is fixedly connected to the upper end of the thread trimming driving arm, an output driving arm is fixedly connected to the lower end of the thread trimming driving arm, the free end of the input driving arm is hinged to the thread trimming connecting rod, and the free end of the output driving arm is hinged to the thread trimming mechanism.
The driving rod is further sleeved with a driving block, the driving block is located between the two guide plates, a reset spring is arranged between the driving block and the guide plate close to one side of the trimming connecting rod, a guide groove is formed in the position, corresponding to the driving block, of the driving connecting plate, the direction of the guide groove is consistent with the direction of the driving rod, a guide post is arranged on the driving block and penetrates through the guide groove, a third connecting rod is pivoted on the driving connecting plate, one end of the third connecting rod is hinged to the thread loosening transmission mechanism, a second avoiding groove is formed in the other end of the third connecting rod, and the guide post is contained in the second avoiding groove.
The driving rod is movably connected with the trimming connecting rod through a first connecting seat, and a buffer sleeve is sleeved on the driving rod between the first connecting seat and a guide plate close to the first connecting seat; the driving rod is movably connected with the second connecting rod through a second connecting seat.
The utility model discloses install step motor at the tip of sewing machine body, add a drive connecting plate at the sewing machine body back, thread trimming drive mechanism and thread slackening drive mechanism realize the linkage with the drive connecting plate and are connected with step motor's output, simultaneously the utility model discloses thread trimming drive mechanism and thread slackening mechanism all adopt between the step motor output to open long banding groove of dodging and realize swing joint, the sewing machine back sets up the drive connecting plate, can not outside arch in the space for the structure is compacter, adopts and avoids the groove to realize lifting the separation structure of presser foot and thread slackening action more reasonable, has reliable and stable characteristics.
Drawings
Fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the sewing machine body, the motor mounting plate and the driving connecting plate of the present invention;
fig. 3 is a schematic structural diagram (one) of the driving device of the present invention;
fig. 4 is a schematic structural view (ii) of the driving device of the present invention;
fig. 5 is a schematic structural view (three) of the driving device of the present invention;
fig. 6 is a schematic structural view of the stepping motor and the motor mounting base of the present invention.
Detailed Description
As shown in fig. 1-6, a driving device for presser foot lifting and thread trimming of a sewing machine comprises a stepping motor 1 and a motor mounting plate 2, wherein the motor mounting plate 2 comprises a connecting plate 21 and a mounting plate 22 which are integrally structured, the connecting plate 21 is vertically arranged with the mounting plate 22, the connecting plate 21 is fixedly connected with the end part of a sewing machine body 3, the stepping motor 1 is fixed on the mounting plate 22, the axial direction of the stepping motor 1 is horizontally arranged in the front-back direction, a driving arm is arranged on an output shaft of the stepping motor 1, the driving arm is provided with two output ends, and a first output end 11 of the driving arm is movably connected with a presser foot lifting transmission mechanism 4 through a first connecting rod 15; a convex column 13 is arranged at the second output end 12 of the driving arm, the convex column 13 is accommodated in the first avoiding groove 161 of the strip shape at the end part of the second connecting rod 16, and the other end of the second connecting rod 16 is movably connected with the trimming transmission mechanism.
The trimming transmission mechanism comprises a driving connecting plate 5 fixedly connected to the position, close to the motor mounting plate 2, on the back of the sewing machine, two guide plates 51 perpendicular to the driving connecting plate are arranged on the driving connecting plate 5, guide holes 52 are formed in the two guide plates, a driving rod 61 penetrates through the two guide holes 52, two ends of the driving rod 61 are respectively hinged to the second connecting rod 16 and the trimming connecting rod 62, the trimming connecting rod 62 is hinged to the input end of the trimming driving arm 63, and the output end of the trimming driving arm 63 is connected with a trimming mechanism 64.
Drive connecting plate 5 and mounting panel 22 parallel arrangement, drive connecting plate 5 links firmly with mounting panel 22 through screw rod 54, and the cover is equipped with fixed cover 55 on the screw rod 54 between drive connecting plate 5 and mounting panel 22, and the length of fixed cover 55 is unanimous with the interval between drive connecting plate 5 and the mounting panel 22, and fixed cover 55 can strengthen the intensity and the stability of mounting panel 22 and drive connecting plate 5.
The thread trimming driving arm 63 is longitudinally arranged, the thread trimming driving arm 63 penetrates through a shaft hole of the thread trimming fixing seat 65, the thread trimming fixing seat 65 is fixedly connected with the sewing machine body 3, the upper end of the thread trimming driving arm 63 is fixedly connected with an input driving arm 631, the lower end of the thread trimming driving arm 63 is fixedly connected with an output driving arm 632, the free end of the input driving arm 631 is hinged with the thread trimming connecting rod 62, and the free end of the output driving arm 632 is hinged with the thread trimming mechanism 64.
The driving rod 61 is further sleeved with a driving block 66, the driving block 66 is located between the two guide plates 51, a return spring 67 is arranged between the driving block 66 and the guide plate 51 close to one side of the trimming connecting rod 62, a guide groove 53 is formed in the position, corresponding to the driving block 66, of the driving connecting plate 5, the direction of the guide groove 53 is consistent with that of the driving rod 61, a guide post 68 is arranged on the driving block 66, the guide post 68 penetrates through the guide groove 53, the driving connecting plate 5 is pivoted with a third connecting rod 17, one end of the third connecting rod 17 is hinged to the wire loosening transmission mechanism 7, the other end of the third connecting rod 17 is provided with a second avoidance groove 171, and the guide post 68 is accommodated in the second avoidance groove 171.
The driving rod 61 is movably connected with the thread trimming connecting rod 62 through a first connecting seat 611, and a buffer sleeve 69 is sleeved on the driving rod 61 between the first connecting seat 611 and the guide plate 51 close to the first connecting seat; the driving rod 61 is movably connected with the second connecting rod 16 through a second connecting seat 612.
The utility model discloses a working process is such:
1. the stepping motor rotates anticlockwise, the first output end 11 drives the presser foot lifting transmission mechanism 4 to act through the first connecting rod 15, and the presser foot lifting operation is realized; meanwhile, the convex column 13 at the free end of the second output end 12 slides in the first avoiding groove 161, and the second connecting rod 15 rotates downwards, but does not drive the trimming transmission mechanism to act;
2. the stepping motor rotates clockwise, the first output end 11 drives the presser foot lifting transmission mechanism 4 to act through the first connecting rod 15, and the presser foot does not act because the presser foot lifting transmission mechanism 4 has a section of idle stroke during the back striking action; meanwhile, the convex column 13 at the free end of the second output end 12 pushes the second connecting rod 16 to drive the driving rod 61 to move axially, the driving rod 61 moves axially to drive the thread trimming mechanism 64 to complete thread trimming through the thread trimming driving arm 63, the driving rod 61 moves axially to drive the third connecting rod 17 to rotate through the guide post 88 on the driving block 66, and the third connecting rod 17 drives the loosening transmission mechanism 7 to move during thread trimming to complete thread loosening.
The utility model discloses install step motor at the tip of sewing machine body, add a drive connecting plate at the sewing machine body back, thread trimming drive mechanism and thread loosening drive mechanism realize the linkage with the drive connecting plate and are connected with step motor's output, all adopt to open long banding groove realization swing joint of dodging between thread trimming drive mechanism and thread loosening mechanism and the step motor output simultaneously, the sewing machine back sets up the drive connecting plate, can not outwards be protruding in the space, make the structure compacter, adopt to dodge the groove and realize lifting the bearing and the line trimming separation structure of thread loosening action more reasonable, have reliable and stable characteristics.
Claims (7)
1. The utility model provides a drive arrangement that sewing machine lifted presser foot and cut off stitches which characterized in that: the sewing machine comprises a stepping motor (1) and a motor mounting plate (2), wherein the stepping motor (1) is used for fixing the end part of a sewing machine body (3) through the motor mounting plate (2), the axial direction of the stepping motor (1) is horizontally arranged in the front-back direction, a driving arm is arranged on an output shaft of the stepping motor (1), the driving arm is provided with two output ends, and a first output end (11) of the driving arm is movably connected with a presser foot lifting transmission mechanism (4) through a first connecting rod (15); a convex column (13) is arranged at the second output end (12) of the driving arm, the convex column (13) is accommodated in a first avoiding groove (161) which is long-strip-shaped at the end part of the second connecting rod (16), and the other end of the second connecting rod (16) is movably connected with the trimming transmission mechanism.
2. A drive device for presser foot lifting and thread cutting of a sewing machine as claimed in claim 1, wherein: the trimming transmission mechanism comprises a driving connecting plate (5) fixedly connected to a position, close to a motor mounting plate (2), on the back of the sewing machine, two guide plates (51) perpendicular to the driving connecting plate are arranged on the driving connecting plate (5), guide holes (52) are formed in the two guide plates, a driving rod (61) penetrates through the two guide holes (52), two ends of the driving rod (61) are hinged to a second connecting rod (16) and a trimming connecting rod (62), the trimming connecting rod (62) is hinged to the input end of a trimming driving arm (63), and the output end of the trimming driving arm (63) is connected with a trimming mechanism (64).
3. A drive device for presser foot lifting and thread cutting of a sewing machine as claimed in claim 2, wherein: the thread trimming driving arm (63) is longitudinally arranged, the thread trimming driving arm (63) penetrates through a shaft hole of the thread trimming fixing seat (65), the thread trimming fixing seat (65) is fixedly connected with the sewing machine body (3), the upper end of the thread trimming driving arm (63) is fixedly connected with an input driving arm (631), the lower end of the thread trimming driving arm (63) is fixedly connected with an output driving arm (632), the free end of the input driving arm (631) is hinged to a thread trimming connecting rod (62), and the free end of the output driving arm (632) is hinged to a thread trimming mechanism (64).
4. A drive device for presser foot lifting and thread cutting of a sewing machine as claimed in claim 2, wherein: the driving rod (61) is further sleeved with a driving block (66), the driving block (66) is located between the two guide plates (51), a reset spring (67) is arranged between the driving block (66) and the guide plate (51) close to one side of the trimming connecting rod (62), a guide groove (53) is formed in the position, corresponding to the driving block (66), of the driving connecting plate (5), the direction of the guide groove (53) is consistent with that of the driving rod (61), a guide column (68) is arranged on the driving block (66), the guide column (68) penetrates through the guide groove (53), a third connecting rod (17) is pivoted on the driving connecting plate (5), one end of the third connecting rod (17) is hinged to the wire loosening transmission mechanism (7), a second avoiding groove (171) is formed in the other end of the third connecting rod (17), and the guide column (68) is accommodated in the second avoiding groove (171).
5. The drive device for presser foot lifting and thread cutting of a sewing machine as claimed in claim 4, wherein: the driving rod (61) is movably connected with the trimming connecting rod (62) through a first connecting seat (611), and a buffer sleeve (69) is sleeved on the driving rod (61) between the first connecting seat (611) and a guide plate (51) close to the first connecting seat; the driving rod (61) is movably connected with the second connecting rod (16) through a second connecting seat (612).
6. A drive device for presser foot lifting and thread cutting of a sewing machine as claimed in claim 1, wherein: motor mounting panel (2) including connecting plate (21) and mounting panel (22) of a body structure, connecting plate (21) set up with mounting panel (22) are perpendicular, connecting plate (21) link firmly the tip at sewing machine body (3), step motor (1) is fixed on mounting panel (22).
7. A drive device for presser foot lifting and thread cutting of a sewing machine as claimed in claim 2, wherein: drive connecting plate (5) and mounting panel (22) parallel arrangement, drive connecting plate (5) link firmly with mounting panel (22) through screw rod (54), the cover is equipped with fixed cover (55) on screw rod (54) between drive connecting plate (5) and mounting panel (22), the length of fixed cover (55) and drive connecting plate (5) and the interval between mounting panel (22) are unanimous.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120068552.1U CN214362099U (en) | 2021-01-12 | 2021-01-12 | Driving device for presser foot lifting and thread trimming of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120068552.1U CN214362099U (en) | 2021-01-12 | 2021-01-12 | Driving device for presser foot lifting and thread trimming of sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214362099U true CN214362099U (en) | 2021-10-08 |
Family
ID=77955661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120068552.1U Active CN214362099U (en) | 2021-01-12 | 2021-01-12 | Driving device for presser foot lifting and thread trimming of sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214362099U (en) |
-
2021
- 2021-01-12 CN CN202120068552.1U patent/CN214362099U/en active Active
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