CN111485331A - Differential adjusting mechanism and sewing machine with same - Google Patents
Differential adjusting mechanism and sewing machine with same Download PDFInfo
- Publication number
- CN111485331A CN111485331A CN201910081211.5A CN201910081211A CN111485331A CN 111485331 A CN111485331 A CN 111485331A CN 201910081211 A CN201910081211 A CN 201910081211A CN 111485331 A CN111485331 A CN 111485331A
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- Prior art keywords
- piece
- differential
- swinging
- operating
- stop
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B27/00—Work-feeding means
- D05B27/02—Work-feeding means with feed dogs having horizontal and vertical movements
- D05B27/08—Work-feeding means with feed dogs having horizontal and vertical movements with differential feed motions
Abstract
The invention provides a differential adjusting mechanism and a sewing machine with the same. The differential adjusting mechanism comprises a rack, a swinging piece and an adjusting part, wherein feeding teeth and differential teeth are movably arranged on the rack, the swinging piece is rotatably arranged on the rack and is in transmission connection with the feeding teeth and the differential teeth so as to change the differential motion of the feeding teeth and the differential teeth by rotating the swinging piece, the adjusting part comprises an operating piece and a stop piece, the operating piece is movably connected with the rack, the stop piece is matched with the operating piece, the swinging piece is abutted to the stop piece so as to move the stop piece by operating the operating piece, and the swinging piece is driven to rotate. Through operation operating parts so that with operating parts complex stop part removal to through the swing piece rotation of stop part removal drive with the stop part butt, thereby change the differential of pay-off tooth and differential tooth, set up the precision that has improved differential regulation like this, improved sewing operation quality.
Description
Technical Field
The invention relates to the technical field of sewing machine equipment, in particular to a differential adjusting mechanism and a sewing machine with the same.
Background
In the prior art, a swinging piece is arranged in a frame of a sewing machine and is in driving connection with a feeding tooth and a differential tooth, and the differential motion of the feeding tooth and the differential tooth is adjusted by manually rotating the swinging piece.
However, the precision of the manual rotation of the swinging member for adjusting the differential motion of the feeding tooth and the differential tooth is too low, and the manual rotation of the swinging member needs to be adjusted for many times, so that the operation quality of the sewing machine cannot be ensured.
Disclosure of Invention
The invention mainly aims to provide a differential adjusting mechanism and a sewing machine with the same, so as to solve the problem of low differential adjusting precision in the prior art.
In order to achieve the above object, according to one aspect of the present invention, there is provided a sewing machine comprising: the feeding tooth and the differential tooth are movably arranged on the rack; the swinging piece is rotatably arranged on the rack and is in driving connection with the feeding teeth and the differential teeth so as to change the differential values of the feeding teeth and the differential teeth by rotating the swinging piece; the adjusting part comprises an operating part and a stop part, the operating part is movably connected with the rack, the stop part is matched with the operating part, the swinging part is abutted against the stop part, and the stop part is moved by operating the operating part to drive the swinging part to rotate.
Furthermore, an elastic part is arranged on the frame, and part of the elastic part is connected with the swinging piece so that the swinging piece is abutted against the stop piece under the action of the elastic force of the elastic part.
Furthermore, the elastic part is a torsion spring which is fixed on the frame, and a torsion arm of the torsion spring is connected with the swinging piece.
Furthermore, a connecting hole is formed in the stop piece, the operating piece penetrates through the connecting hole, and the operating piece is in threaded connection with the stop piece.
Furthermore, a first sliding groove is formed in the rack, at least part of the stop piece is movably arranged in the first sliding groove, and the first sliding groove extends along the length direction of the operating piece.
Furthermore, a first limiting part and a second limiting part are arranged on the machine frame, the first limiting part and the second limiting part are arranged at intervals, the first sliding chute is located between the first limiting part and the second limiting part, the first end of the operating part is rotatably connected with the first limiting part, the second end of the operating part is rotatably connected with the second limiting part, and the first end of the operating part forms an operating end for driving the operating part to rotate.
Further, the second end of operating parts is provided with the annular groove, forms the space of stepping down between the cell wall of annular groove and the second locating part, is provided with compression spring in the space of stepping down to support the operating parts through compression spring's elasticity.
Furthermore, a locking part is arranged on the swinging piece, and the locking part is provided with a locking position for locking the swinging piece and the rack and an unlocking position for enabling the swinging piece and the rack to move relatively; when the locking part is positioned at the unlocking position, the stop piece is moved by operating the operating piece so as to drive the swinging piece to rotate; when the locking part is located at the locking position, the swinging piece is fixed by the locking part to prevent the swinging piece from rotating.
Further, a second sliding groove is formed in the rack and is arranged at an interval with the first sliding groove, the second sliding groove is an arc-shaped sliding groove, a locking portion is arranged at the end portion of the swinging piece and movably arranged in the second sliding groove, and the middle of the swinging piece is abutted to the stop piece.
Furthermore, a limit groove is formed in the middle of the swinging piece, and the groove wall of the limit groove is abutted to the stop piece, so that the swinging piece moves under the driving of the stop piece.
According to another aspect of the present invention, there is provided a sewing machine including a differential adjusting mechanism as described above.
By applying the technical scheme of the invention, the stop piece matched with the operating piece moves by operating the operating piece, and the swinging piece abutted against the stop piece is driven to rotate by the movement of the stop piece, so that the differential motion of the feeding tooth and the differential tooth is changed, the precision of differential adjustment is improved, and the sewing operation quality is improved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 shows a first perspective structural view of an embodiment of a differential adjustment mechanism according to the present invention; and
fig. 2 shows a second perspective structural view of an embodiment of the differential adjustment mechanism according to the present invention.
Wherein the figures include the following reference numerals:
10. a frame; 11. a first chute; 12. a second chute; 13. a first limit piece; 14. a second limiting member;
20. a swinging member; 21. a limiting groove;
30. an adjustment section; 31. an operating member; 32. a stopper;
40. an elastic portion;
50. a locking portion.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
Referring to fig. 1-2, a differential adjustment mechanism is provided according to an embodiment of the present invention.
Specifically, as shown in fig. 1, the differential adjustment mechanism includes a frame 10, a swinging member 20 and an adjustment portion 30, wherein the frame 10 is movably provided with feeding teeth and differential teeth, the swinging member 20 is rotatably provided on the frame 10, the swinging member 20 is in transmission connection with the feeding teeth and the differential teeth so as to change the differential motion of the feeding teeth and the differential teeth by rotating the swinging member 20, the adjustment portion 30 includes an operating member 31 and a stop member 32, the operating member 31 is movably connected with the frame 10, the stop member 32 is matched with the operating member 31, and the swinging member 20 abuts against the stop member 32 so as to move the stop member 32 by operating the operating member 31 so as to drive the swinging member 20 to rotate.
In the embodiment, the stop member 32 matched with the operating member 31 is moved by operating the operating member 31, so that the swinging member 20 abutted with the stop member 32 is driven to rotate by the movement of the stop member 32, the differential motion of the feeding teeth and the differential teeth is changed, the precision of differential adjustment is improved, and the sewing operation quality is improved.
As shown in fig. 2, the frame 10 is provided with an elastic portion 40, and a part of the elastic portion 40 is connected to the swinging member 20, so that the swinging member 20 is abutted against the stopper 32 by the elastic force of the elastic portion 40. Preferably, the elastic part 40 is a torsion spring fixed to the frame 10, and a torsion arm of the torsion spring is connected with the oscillating member 20. The arrangement is such that the elastic portion 40 provides an elastic force to abut the oscillating member 20 against the stopper 32, and the oscillating member 20 is rotated counterclockwise or clockwise by moving the stopper 32.
As shown in fig. 1, the stopper 32 is provided with a coupling hole, the operating element 31 is inserted into the coupling hole, and the operating element 31 is screwed to the stopper 32. The arrangement is such that rotating the operating member 31 moves the stop member 32 along the length of the operating member 31 by means of a screw drive.
In the embodiment, the frame 10 is provided with a first sliding chute 11, and at least a part of the stop member 32 is movably disposed in the first sliding chute 11, and the length direction of the first sliding chute 11 is the same as the length direction of the operating member 31. The arrangement is such that the rotation of the stopper 32 is restricted by the first chute 11 so that the stopper 32 can move only in the length direction of the first chute 11.
As shown in fig. 1, a first limiting member 13 and a second limiting member 14 are disposed on the frame 10, the first limiting member 13 and the second limiting member 14 are disposed at intervals, the first sliding slot 11 is located between the first limiting member 13 and the second limiting member 14, a first end of the operating member 31 is rotatably connected to the first limiting member 13, a second end of the operating member 31 is rotatably connected to the second limiting member 14, and a first end of the operating member 31 forms an operating end for driving the operating member 31 to rotate. This is arranged so that the operating member 31 is rotated by the operating end to move the stopper 32 in the longitudinal direction of the first link 11 to rotate the swinging member 20.
In this embodiment, the second end of the operating element 31 is provided with an annular groove, a yielding space is formed between a groove wall of the annular groove and the second limiting element 14, and a compression spring is disposed in the yielding space to support the operating element 31 by an elastic force of the compression spring. The compression spring is elastically sleeved on the groove wall of the annular groove, so that the operating part 31 is supported by the compression spring, the abutting area of the operating part 31 and the first limiting part 13 and the second limiting part 14 is reduced, and the operating part 31 can be rotated by a user conveniently.
In the present embodiment, the swinging member 20 is provided with a locking portion 50, and the locking portion 50 has a locking position for locking the swinging member 20 with the frame 10 and an unlocking position for moving the swinging member 20 and the frame 10 relative to each other; when the locking portion 50 is located at the unlocking position, the stopper 32 is moved by operating the operating member 31 to rotate the swinging member 20; when the lock portion 50 is located at the lock position, the swinging member 20 is fixed by the lock portion 50 to prevent the swinging member 20 from rotating. This arrangement facilitates the user to lock the oscillating member 20 by the locking portion 50 after moving the oscillating member 20 to a predetermined position by adjusting the stopper 32 to adjust the differential motion between the feeding dog and the differential dog to a desired value, so as to prevent the oscillating member 20 from moving during the sewing operation.
As shown in fig. 1 and 2, the frame 10 is provided with a second sliding groove 12, the second sliding groove 12 is spaced from the first sliding groove 11, the second sliding groove 12 is an arc-shaped sliding groove, the end of the oscillating member 20 is provided with a locking portion 50, the locking portion 50 is movably disposed in the second sliding groove 12, and the middle portion of the oscillating member 20 abuts against the stop member 32. This arrangement allows the lock portion 50 to be movable in the rotational direction of the swinging member 20 by the arc shape of the second sliding chute 12, improving the stability and safety of the mechanism.
In this embodiment, the middle of the swinging member 20 is opened with a limiting groove 21, and a groove wall of the limiting groove 21 abuts against the stop member 32, so that the swinging member 20 moves under the driving of the stop member 32. The limit groove 21 can avoid the overlarge swing range of the swing piece 20, and the stability and the safety of the mechanism are improved.
According to another aspect of the present invention, there is provided a sewing machine including a differential adjusting mechanism which is the differential adjusting mechanism in the above embodiment.
The ratio of the stroke of the differential tooth reciprocating back and forth to the stroke of the feeding tooth reciprocating back and forth is a differential numerical value, and different elastic fabrics are adapted by adjusting different differential numerical values.
The working principle is as follows: when the differential motion is adjusted, the locking portion 50 is loosened, and the operating member 31 is rotated clockwise (the operating member 31 and the stopper member 32 are screwed), so that the stopper member 32 is moved upward by the second slide groove 12. The stop member 32 is a limiting member, and drives the swinging member 20 to swing upward. Conversely, by rotating the operating member 31 counterclockwise, the stopper 32 moves downward, the swinging member 20 swings downward by the restoring force of the torsion spring, the locking portion 50 is locked, and the differential adjustment is completed. The rotation of the screw rod drives the stop part 32 to perform vertical linear adjustment, and the purpose of high-precision differential adjustment is realized by utilizing the self-locking principle of threads.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (11)
1. A differential adjustment mechanism, comprising:
the feeding mechanism comprises a machine frame (10), wherein feeding teeth and differential teeth are movably arranged on the machine frame (10);
the swinging piece (20) is rotatably arranged on the rack (10), and the swinging piece (20) is in transmission connection with the feeding teeth and the differential teeth so as to change the differential motion of the feeding teeth and the differential teeth by rotating the swinging piece (20);
the adjusting part (30), adjusting part (30) includes operating parts (31) and stop part (32), operating parts (31) movably with frame (10) are connected, stop part (32) with operating parts (31) cooperate, swing piece (20) with stop part (32) butt, so that through the operation operating parts (31) make stop part (32) remove, in order to drive swing piece (20) rotate.
2. Differential adjustment mechanism according to claim 1, characterized in that an elastic portion (40) is provided on the frame (10), part of the elastic portion (40) being connected to the oscillating piece (20) so that the oscillating piece (20) abuts against the stop (32) under the elastic force of the elastic portion (40).
3. Differential adjustment mechanism according to claim 2, characterized in that the resilient part (40) is a torsion spring which is fixed to the frame (10) and the torsion arm of which is connected to the oscillating piece (20).
4. The differential adjustment mechanism according to claim 1, characterized in that the stopper (32) is provided with a connecting hole, the operating member (31) is inserted into the connecting hole, and the operating member (31) is screwed with the stopper (32).
5. Differential adjustment mechanism according to claim 4, characterized in that a first slide groove (11) is provided in the frame (10), at least part of the stop member (32) being movably arranged in the first slide groove (11), the first slide groove (11) extending in the length direction of the operating member (31).
6. The differential adjustment mechanism according to claim 5, wherein a first limiting member (13) and a second limiting member (14) are disposed on the frame (10), the first limiting member (13) and the second limiting member (14) are disposed at intervals, the first sliding slot (11) is located between the first limiting member (13) and the second limiting member (14), a first end of the operation member (31) is rotatably connected to the first limiting member (13), a second end of the operation member (31) is rotatably connected to the second limiting member (14), and a first end of the operation member (31) forms an operation end for driving the operation member (31) to rotate.
7. The differential adjustment mechanism according to claim 6, characterized in that the second end of the operation member (31) is provided with an annular groove, a yielding space is formed between a groove wall of the annular groove and the second limiting member (14), and a compression spring is arranged in the yielding space to support the operation member (31) by an elastic force of the compression spring.
8. The differential adjustment mechanism according to claim 5, characterized in that a lock portion (50) is provided on the swinging member (20), the lock portion (50) having a lock position for locking the swinging member (20) with the frame (10) and an unlock position for relatively moving the swinging member (20) with the frame (10); when the locking part (50) is located at the unlocking position, the stop piece (32) is moved by operating the operating piece (31) so as to drive the swinging piece (20) to rotate; when the lock portion (50) is in the lock position, the swinging member (20) is fixed by the lock portion (50) to prevent the swinging member (20) from rotating.
9. The differential adjustment mechanism according to claim 8, characterized in that a second sliding groove (12) is provided on the frame (10), the second sliding groove (12) is provided at a distance from the first sliding groove (11), the second sliding groove (12) is an arc-shaped sliding groove, the end of the oscillating member (20) is provided with the locking portion (50), the locking portion (50) is movably provided in the second sliding groove (12), and the middle of the oscillating member (20) abuts against the stop member (32).
10. The differential adjustment mechanism according to claim 9, characterized in that a limit groove (21) is opened in the middle of the swinging member (20), and the wall of the limit groove (21) abuts against the stop member (32) so that the swinging member (20) moves under the drive of the stop member (32).
11. A sewing machine comprising a differential adjustment mechanism, characterized in that the differential adjustment mechanism is as claimed in any one of claims 1 to 10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910081211.5A CN111485331A (en) | 2019-01-28 | 2019-01-28 | Differential adjusting mechanism and sewing machine with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910081211.5A CN111485331A (en) | 2019-01-28 | 2019-01-28 | Differential adjusting mechanism and sewing machine with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111485331A true CN111485331A (en) | 2020-08-04 |
Family
ID=71812288
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910081211.5A Pending CN111485331A (en) | 2019-01-28 | 2019-01-28 | Differential adjusting mechanism and sewing machine with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111485331A (en) |
-
2019
- 2019-01-28 CN CN201910081211.5A patent/CN111485331A/en active Pending
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