CN109402877B - Cloth feeding adjusting mechanism of sewing machine - Google Patents
Cloth feeding adjusting mechanism of sewing machine Download PDFInfo
- Publication number
- CN109402877B CN109402877B CN201811404195.0A CN201811404195A CN109402877B CN 109402877 B CN109402877 B CN 109402877B CN 201811404195 A CN201811404195 A CN 201811404195A CN 109402877 B CN109402877 B CN 109402877B
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- shaft
- cloth feeding
- connecting rod
- eccentric wheel
- crank
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- 239000004744 fabric Substances 0.000 title claims abstract description 119
- 238000009958 sewing Methods 0.000 title claims abstract description 31
- 230000005540 biological transmission Effects 0.000 claims description 6
- 238000005299 abrasion Methods 0.000 abstract description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B27/00—Work-feeding means
- D05B27/10—Work-feeding means with rotary circular feed members
-
- 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
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05D—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES D05B AND D05C, RELATING TO SEWING, EMBROIDERING AND TUFTING
- D05D2209/00—Use of special materials
- D05D2209/08—Use of special materials elastic, e.g. rubber spring
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The utility model discloses a cloth feeding adjusting mechanism of a sewing machine, which comprises a main shaft, a cloth feeding shaft, an upper cloth feeding tooth frame, an upper cloth feeding shaft crank, an upper cloth feeding connecting rod crank shaft, a cloth feeding adjusting component sleeved on the main shaft, wherein the upper cloth feeding shaft crank is rotatably sleeved on the upper cloth feeding connecting rod crank shaft through a shaft hole in the middle, the cloth feeding adjusting component comprises a cloth feeding connecting rod, one end of the cloth feeding connecting rod is rotatably sleeved outside the main shaft through a connecting rod shaft hole, the other end of the cloth feeding connecting rod is rotatably connected with the upper cloth feeding shaft crank, and the cloth feeding adjusting component further comprises a needle opening button, a needle opening positioning wheel, a positioning gear, an eccentric wheel, a needle opening eccentric wheel and a sliding positioning tooth piece, wherein the needle opening positioning wheel, the positioning gear and the eccentric wheel are rotatably sleeved on the main shaft. The utility model adopts the upper cloth feeding shaft crank, so that the structure is simpler, the operation is more stable, the abrasion of parts is slower, the service life is long, and the noise generated by the machine during the working is smaller; the utility model has simple control and convenient adjustment.
Description
Technical Field
The utility model belongs to the technical field of textile equipment, and particularly relates to a cloth feeding adjusting mechanism of a sewing machine.
Background
Sewing machines typically include a feed adjustment mechanism for adjusting the stitch pitch. In the prior art, the structure is too complicated to adjust according to the size of the fabric and the shaft speed of the open needle positioning wheel, the adjustment is inconvenient and the precision is poor, the friction force received by parts in working engineering is large, the service life is short, and large noise can be generated.
The utility model patent application No. 201820120925.3 discloses a cloth feeding adjusting device of a sewing machine, which comprises a first cloth feeding mechanism, a second cloth feeding mechanism, a swinging piece, a shaft rotation driving piece, a double-shaft linkage rod, a seam distance adjusting component and a transmission connecting rod, wherein the seam distance adjusting component comprises a dial, a trigger and a swinging rod, the trigger is connected with the dial in a penetrating way through the swinging piece and is formed outside a seat body, and the trigger is connected with the swinging piece, the swinging rod and the double-shaft linkage
The movable rod changes the position of the sliding block in the guide groove, so that the forward and backward movement strokes of the first cloth feeding teeth and the second cloth feeding teeth can be synchronously adjusted; therefore, the convenience of seam distance adjustment is greatly improved. However, the device is also greatly simplified in overall structure, and is prone to wear and failure during operation.
Disclosure of Invention
The utility model aims to provide a cloth feeding adjusting mechanism of a sewing machine, which has the advantages of simple structure, convenient adjustment, stable operation, difficult abrasion of parts, long service life and low noise.
In order to achieve the above purpose, the technical scheme of the utility model is as follows: the utility model provides a sewing machine's feed guiding mechanism, including the main shaft, with the upper feed shaft of main shaft parallel, install the upper feed tooth frame on the upper feed tooth frame, install the upper feed tooth on the upper feed tooth frame, still include upper feed shaft crank and cup joint the feed guiding component on the main shaft, upper feed shaft crank includes mutual fixed connection's tooth frame arm and adjustment shaft arm, upper feed shaft crank passes through tooth frame arm and the shaft hole that the adjustment shaft arm junction offered and rotates and connect upper feed connecting rod crank axle, upper feed connecting rod crank axle installs on the sewing machine casing, tooth frame arm passes through drive crank subassembly connection upper feed shaft, feed guiding component includes the feed connecting rod, feed connecting rod one end pass through the connecting rod shaft hole rotate cup joint in the main shaft outside, the other end rotate connect in the adjustment shaft arm, feed guiding component still includes and install the needle button that can follow axial slip on the main shaft, the fixed cup joint in the eccentric wheel that the main shaft passes through tooth frame arm and adjustment shaft arm junction set up the shaft hole rotation is offered and is connected with upper feed connecting rod crank axle, the eccentric wheel that the eccentric wheel is installed in the eccentric wheel is installed in the eccentric wheel, the eccentric wheel that the eccentric wheel is installed in the eccentric wheel is installed in the eccentric wheel axial run, the eccentric wheel is in the eccentric wheel is fixed and is located in the axial run, and is located in the eccentric wheel and is located in the eccentric wheel and is in the axial run, the end part of one end of the sliding positioning tooth piece in the sliding direction of the sliding groove is provided with a limiting tooth meshed with the positioning gear, and the end part of the needle opening button is close to one end of the sliding positioning tooth piece, which is far away from the limiting tooth.
The sliding positioning tooth piece can be pushed to slide in the sliding groove on the needle opening eccentric wheel by pressing the needle opening button, so that the limiting tooth and the positioning gear are separated from each other.
Preferably, the transmission crank assembly comprises a connecting crank and a cloth feeding connecting rod crank, one end of the cloth feeding connecting rod crank is fixedly sleeved on the upper cloth feeding shaft, the other end of the cloth feeding connecting rod crank is rotationally connected with the connecting crank through a connecting crank shaft pin, the other end of the connecting crank is rotationally connected with the tooth frame shaft arm of the upper cloth feeding shaft crank through a cloth feeding connecting rod crank shaft pin, and the structure can enable the rotation of the upper cloth feeding shaft to be smoother and enable the operation of the upper cloth feeding teeth to be smoother and more stable.
In the technical scheme of the utility model, the upper cloth feeding shaft, the upper cloth feeding connecting rod crank shaft and the main shaft are all rotatably arranged in a shell of the sewing machine, and can not perform displacement in other directions except rotation, when the sewing machine is used, the main shaft rotates to drive the needle opening positioning wheel to rotate, the needle opening positioning wheel drives the eccentric wheel to drive the eccentric wheel to eccentrically rotate through the eccentric small shaft, and the cloth feeding connecting rod reciprocates up and down with a constant distance through the cooperation of the eccentric wheel, the needle opening eccentric wheel and the connecting rod shaft hole, so that the upper cloth feeding teeth realize cloth feeding through the cloth feeding connecting rod crank.
Preferably, the cloth feeding adjusting assembly further comprises a positioning torsion spring, one end of the positioning torsion spring is fixedly arranged on the open needle eccentric wheel, the other end of the positioning torsion spring is arranged in a groove formed in one side face of one end of the limiting tooth of the sliding positioning tooth piece, and the positioning torsion spring can enable the sliding positioning tooth piece to slide outwards, so that the limiting tooth and the positioning gear keep a meshed state.
The technical principle of the utility model is as follows: the sliding positioning tooth piece is matched with the positioning gear, when the opening button does not press the sliding positioning tooth piece, the positioning torsion spring enables the limiting teeth on the sliding positioning tooth piece to be tightly meshed with the positioning gear, at the moment, the opening eccentric wheel cannot rotate relative to the main shaft, the eccentric amount of the opening eccentric wheel and the eccentric wheel cannot be adjusted, when the eccentric amount of the opening eccentric wheel and the eccentric wheel needs to be adjusted, the limiting teeth on the sliding positioning tooth piece are disengaged from the positioning gear by pressing the opening button, the opening eccentric wheel and the cloth feeding connecting rod can rotate around the main shaft, at the moment, the main shaft is rotated to drive the eccentric wheel to rotate, so that the swinging radian of the opening eccentric wheel and the cloth feeding connecting rod is changed, namely, the stroke of the upper cloth feeding tooth is adjusted, and the adjustment of the seam distance is realized.
Preferably, the eccentric wheel is provided with a small eccentric wheel hole, the small eccentric wheel is installed in an internal rotating mode, the small eccentric wheel is far away from the center line of the small eccentric wheel, an eccentric small shaft hole which is axially the same as the small eccentric wheel is formed in the small eccentric wheel, the small eccentric shaft is installed in the small eccentric shaft hole in a rotating mode, and the structure enables eccentric movement of the eccentric wheel to be smooth and stable, friction is reduced, noise is reduced, and service life is prolonged.
Preferably, the thickness of the gap between the inner shaft sleeve and the connecting rod shaft hole of the cloth feeding connecting rod is uneven, namely the inner shaft sleeve is eccentrically arranged in the connecting rod shaft hole, so that the swinging of the cloth feeding connecting rod is smoother.
Preferably, an opening button sleeve for installing the opening button is arranged on the casing of the sewing machine, so that the sewing machine is convenient to install and maintain.
Preferably, an upper feed dog frame bushing is arranged between the upper feed dog frame and the upper feed dog shaft, so that the upper feed dog frame and the upper feed dog shaft are more firmly installed, and loosening or damage is avoided.
Preferably, the main shaft is arranged in the shell of the sewing machine through a bearing, so that the rotation is smoother and more stable.
Preferably, a limit screw is arranged on the circumference of the positioning gear, two protruding portions are arranged on two sides of the sliding groove on the open-needle eccentric wheel, the limit screw is positioned between the two protruding portions, and the limit screw is matched with the protruding portions to form a rotation adjustment angle of the open-needle eccentric wheel.
Preferably, one of the bosses is operable to mount the positioning torsion spring.
In the technical scheme of the utility model, the rotating connection is formed by matching the shaft pin and the shaft hole except for the special description.
The utility model has the beneficial effects that:
1. the upper cloth feeding shaft crank is adopted, so that the structure is simpler, the operation is more stable, the abrasion of parts is slower, the service life is long, and the noise generated by the machine during working is smaller;
2. the eccentric wheel, the small eccentric wheel and the open-needle eccentric wheel are arranged, so that the swing of the cloth feeding connecting rod is smoother and more stable;
3. the sliding positioning tooth piece and the positioning gear are adopted, the needle opening button is used for control, and the positioning torsion spring is arranged, so that the fixing effect is good, the loosening is not easy, and the control is convenient and labor-saving;
4. the positioning screw is matched with the two convex parts, so that the angle adjustment is convenient.
Drawings
Fig. 1 is an assembly view of an embodiment of the present utility model.
Fig. 2 is an exploded view of the structure of an embodiment of the present utility model.
Fig. 3 is a schematic structural view of a cloth feeding link according to an embodiment of the present utility model.
FIG. 4 is a schematic view of a slide positioning blade according to an embodiment of the present utility model.
Fig. 5 is a schematic structural diagram of a crank of a cloth feeding shaft according to an embodiment of the present utility model.
Fig. 6 is a schematic structural view of a small eccentric wheel according to an embodiment of the present utility model.
The drawings are respectively as follows: 1 upper feed gear, 2 upper feed gear rack, 3 upper feed gear rack bushing, 4 upper feed shaft, 5 connecting crank pin, 6 connecting crank, 7 feed connecting rod crank, 8 upper feed shaft crank, 9 feed connecting rod crank pin, 10 feed connecting rod, 11 bearing, 12 open needle positioning wheel, 13 small eccentric wheel, 14 eccentric wheel, 15 open needle eccentric wheel, 16 sliding positioning tooth sheet, 17 positioning gear, 18 upper feed connecting rod crank shaft, 19 open needle button sleeve, 20 open needle button, 21 main shaft, 22 casing, 23 tooth rack shaft arm, 24 adjusting shaft arm, 25 connecting rod shaft hole, 26 inner shaft sleeve, 27 gap, 28 eccentric small shaft, 29 chute, 30 spacing tooth, 31 positioning torsion spring, 32 groove, 33 small eccentric wheel hole, 34 eccentric small shaft hole, 35 spacing screw, 36 protruding part.
Detailed Description
The technical scheme of the present utility model will be described in detail with reference to the following examples and the accompanying drawings. It should be noted that, in the technical solution of this embodiment, the rotation connection is a connection between a shaft pin and a shaft hole.
As shown in fig. 1 to 5, a cloth feeding adjusting mechanism of a sewing machine comprises a main shaft 21, an upper cloth feeding shaft parallel to the main shaft 21, an upper cloth feeding tooth frame 2 arranged on the upper cloth feeding shaft 4, an upper cloth feeding tooth 1 arranged on the upper cloth feeding tooth frame 2, an upper cloth feeding shaft crank 8 and a cloth feeding adjusting component sleeved on the main shaft 21, wherein the upper cloth feeding shaft crank 8 comprises a tooth frame shaft arm 23 and an adjusting shaft arm 24 which are fixedly connected with each other, the upper cloth feeding shaft crank 8 is rotatably connected with an upper cloth feeding connecting rod crank shaft 18 through a shaft hole formed at the joint of the tooth frame shaft arm 23 and the adjusting shaft arm 24, the upper cloth feeding connecting rod crank shaft 18 is arranged on a casing 22 of the sewing machine, the tooth frame shaft arm 23 is connected with the upper cloth feeding shaft 4 through a transmission crank component, the cloth feeding adjusting component comprises a cloth feeding connecting rod 10, one end of the cloth feeding connecting rod 10 is rotatably sleeved outside the main shaft 21 through a connecting rod shaft hole 25, the other end is rotatably connected with the adjusting shaft arm 24, the cloth feeding adjusting assembly further comprises an opening button 20 which is arranged on the shell 22 and can slide along the axial direction, an opening positioning wheel 12 which is fixedly sleeved on the main shaft 21, a positioning gear 17, an eccentric wheel 14 which is rotatably sleeved on the main shaft 21, an opening eccentric wheel 15 and a sliding positioning tooth piece 16, the opening eccentric wheel 15 is fixedly arranged on one side of the cloth feeding connecting rod 10 and extends to the cloth feeding connecting rod 10 to form an inner shaft sleeve 26, a gap 27 is reserved between the inner shaft sleeve 26 and the connecting rod shaft hole 25 of the cloth feeding connecting rod 10, the eccentric wheel 14 is sleeved in the gap 27, an eccentric small shaft 28 is arranged on the opening positioning wheel 12 in the axial direction away from the central shaft of the opening positioning wheel, the eccentric small shaft 28 is rotatably arranged on the eccentric wheel 14, the end face of the open-needle eccentric wheel 15, opposite to the cloth feeding connecting rod 10, is provided with a chute 29 with the same sliding direction as the open-needle button 20, the sliding positioning tooth piece 16 is slidably mounted in the chute 29, one end of the sliding positioning tooth piece 16 in the sliding direction of the chute 29 is provided with a limiting tooth 30 meshed with the positioning gear 17, and the end of the open-needle button 20 is close to one end of the sliding positioning tooth piece 16, which is far away from the limiting tooth 30.
The sliding positioning tooth piece 16 can be pushed to slide in the sliding groove 29 on the open needle eccentric wheel 15 by pressing the open needle button 20, so that the limiting tooth 30 and the positioning gear 17 are disengaged.
In this embodiment, the transmission crank assembly includes a connecting crank 6 and a cloth feeding connecting rod crank 7, one end of the cloth feeding connecting rod crank 7 is fixedly sleeved on the upper cloth feeding shaft 4, the other end of the cloth feeding connecting rod crank is rotationally connected with the connecting crank 6 through a connecting crank shaft pin 5, the other end of the connecting crank 6 is rotationally connected with the bracket shaft arm 23 of the upper cloth feeding shaft crank 8 through a cloth feeding connecting rod crank shaft pin 9, and the structure can enable the rotation of the upper cloth feeding shaft 4 to be smoother, and enable the operation of the upper cloth feeding teeth 1 to be smoother and more stable.
In the technical scheme of this embodiment, the upper cloth feeding shaft 4, the upper cloth feeding connecting rod crank shaft 18 and the main shaft 21 are rotatably installed in the casing 22 of the sewing machine, and besides rotation, displacement in other directions cannot be performed, when in use, the main shaft 21 rotates to drive the open needle positioning wheel 12 to rotate, the open needle positioning wheel 12 drives the eccentric wheel 14 to drive the eccentric wheel 14 to eccentrically rotate through the eccentric small shaft 28, and the cloth feeding connecting rod 10 reciprocates up and down with a constant distance through the cooperation of the eccentric wheel 14, the open needle eccentric wheel 15 and the connecting rod shaft hole 25, so that the upper cloth feeding teeth 1 realize cloth feeding through the cloth feeding connecting rod crank 7.
As shown in fig. 4, the cloth feeding adjustment assembly further includes a positioning torsion spring 31, one end of the positioning torsion spring 31 is fixedly mounted on the open needle eccentric wheel 15, the other end of the positioning torsion spring is disposed in a groove 32 formed on a side surface of one end of the limiting teeth 30 of the sliding positioning teeth piece 16, and the positioning torsion spring 31 can enable the sliding positioning teeth piece 16 to slide outwards, so that the limiting teeth 30 and the positioning gear 17 maintain a meshed state.
The technical principle of the embodiment is as follows: when the needle opening button 20 does not press the sliding positioning tooth piece 16, the positioning torsion spring 31 enables the limiting tooth 30 on the sliding positioning tooth piece 16 to be tightly meshed with the positioning gear 17, at the moment, the needle opening eccentric wheel 15 cannot rotate relative to the main shaft 21, the eccentric amounts of the needle opening eccentric wheel 15 and the eccentric wheel 14 cannot be adjusted, when the eccentric amounts of the needle opening eccentric wheel 15 and the eccentric wheel 14 need to be adjusted, the limiting tooth 30 on the sliding positioning tooth piece 16 is disengaged from the positioning gear 17 by pressing the needle opening button 20, the needle opening eccentric wheel 15 and the cloth feeding connecting rod 10 can rotate around the main shaft 21, at the moment, the main shaft 21 is rotated to drive the eccentric wheel 14 to rotate, so that the eccentric amount between the needle opening eccentric wheel 15 and the eccentric wheel 14 is adjusted, and the swinging radian of the cloth feeding connecting rod crank 7 and the cloth feeding connecting rod 10 is changed, namely, the stroke of the upper cloth feeding tooth 1 is adjusted, and the adjustment of the seam distance is realized.
As shown in fig. 5, the eccentric wheel 14 is provided with a small eccentric wheel hole 33, the small eccentric wheel 34 is rotatably mounted in the small eccentric wheel, the small eccentric wheel 34 is far away from the central axis and provided with an eccentric small shaft hole 34 which is axially the same as the small eccentric wheel 34, and the eccentric small shaft 28 is rotatably mounted in the eccentric small shaft hole 34.
As shown in fig. 3, the thickness of the gap 27 between the inner sleeve 26 and the rod shaft hole 25 of the cloth feeding rod 10 is not uniform, i.e. the inner sleeve 26 and the rod shaft hole 25 are eccentrically disposed, so that the swinging of the cloth feeding rod 10 is smoother.
As shown in fig. 2, in the present embodiment, an open button sleeve 19 for mounting the open button 20 is provided on a casing 22 of the sewing machine, so that installation and maintenance are facilitated. The upper feed dog frame 2 and the upper feed dog shaft 4 are provided with an upper feed dog frame bushing 3 therebetween, so that the upper feed dog frame 2 and the upper feed dog shaft 4 are more firmly installed, and loosening or damage is avoided. The main shaft 21 is arranged in a shell 22 of the sewing machine through a bearing 11, so that the rotation is smoother and more stable.
As shown in fig. 3, a limit screw 35 is disposed on the positioning gear 17 in the circumferential direction, two protrusions 36 are disposed on two sides of the chute 29 on the open-needle eccentric wheel 15, the limit screw 35 is located between the two protrusions 36, and the limit screw 35 cooperates with the protrusions 36 to form a rotation adjustment angle of the open-needle eccentric wheel 15.
Wherein one of the bosses 36 may be used to mount the positioning torsion spring 31.
Claims (10)
1. The utility model provides a work feed guiding mechanism of sewing machine, includes main shaft (21), goes up work feed shaft (4) parallel with main shaft (21), installs last work feed tooth frame (2) on last work feed shaft (4), installs last work feed tooth (1) on last work feed tooth frame (2), its characterized in that: the automatic cloth feeding device is characterized by further comprising an upper cloth feeding shaft crank (8) and a cloth feeding adjusting assembly sleeved on a main shaft (21), wherein the upper cloth feeding shaft crank (8) comprises a dental frame shaft arm (23) and an adjusting shaft arm (24) which are fixedly connected with each other, the dental frame shaft arm (23) is connected with the upper cloth feeding shaft (4) through a transmission crank assembly, the cloth feeding adjusting assembly comprises a cloth feeding connecting rod (10), one end of the cloth feeding connecting rod (10) is rotatably sleeved outside the main shaft (21) through a connecting rod shaft hole (25), the other end of the cloth feeding connecting rod is rotatably connected with the adjusting shaft arm (24), the cloth feeding adjusting assembly further comprises a needle opening button (20) which is arranged on a casing (22) and can slide along the axial direction, a needle opening positioning wheel (12) fixedly sleeved on the main shaft (21), a positioning gear (17) and an eccentric wheel (14) rotatably sleeved on the main shaft (21), a needle opening wheel (15) and a sliding positioning tooth piece (16), the needle opening wheel (15) is fixedly arranged on one side of the cloth feeding connecting rod (10) and extends to the inner shaft (27) through a connecting rod (26) and a gap (27), an eccentric small shaft (28) is arranged on the axial direction of the needle opening positioning wheel (12) far away from the central position, the eccentric small shaft (28) is rotatably arranged on the eccentric wheel (14), a chute (29) with the same sliding direction as the needle opening button (20) is arranged on the end surface of the needle opening eccentric wheel (15) relative to the cloth feeding connecting rod (10), the sliding positioning tooth piece (16) is slidably mounted in the sliding groove (29), a limiting tooth (30) meshed with the positioning gear (17) is arranged at one end of the sliding positioning tooth piece (16) in the sliding direction of the sliding groove (29), and the end of the needle opening button (20) is close to one end, away from the limiting tooth (30), of the sliding positioning tooth piece (16).
2. The cloth feed adjusting mechanism of a sewing machine of claim 1, wherein: the transmission crank assembly comprises a connecting crank (6) and a cloth feeding connecting rod crank (7), one end of the cloth feeding connecting rod crank (7) is fixedly connected with the upper cloth feeding shaft (4), the other end of the cloth feeding connecting rod crank is rotatably connected with the connecting crank (6), and the other end of the connecting crank (6) is rotatably connected with the dental articulator arm (23) of the upper cloth feeding shaft crank (8).
3. The cloth feed adjusting mechanism of a sewing machine of claim 1, wherein: the cloth feeding adjusting assembly further comprises a positioning torsion spring (31), one end of the positioning torsion spring (31) is fixedly arranged on the open needle eccentric wheel (15), and the other end of the positioning torsion spring is arranged in a groove (32) formed in the side face of one end of the limiting tooth (30) of the sliding positioning tooth piece (16).
4. The cloth feed adjusting mechanism of a sewing machine of claim 1, wherein: the thickness of a gap (27) between the inner sleeve (26) and the connecting rod shaft hole (25) of the cloth feeding connecting rod (10) is uneven, namely the inner sleeve (26) and the connecting rod shaft hole (25) are eccentrically arranged.
5. The cloth feed adjusting mechanism of a sewing machine of claim 1, wherein: the eccentric wheel (14) is provided with a small eccentric wheel hole (33), the small eccentric wheel (13) is installed in the small eccentric wheel hole in a rotating mode, the small eccentric wheel (13) is far away from the center axis, an eccentric small shaft hole (34) which is axially the same as the small eccentric wheel (13) is formed in the small eccentric wheel hole, and the eccentric small shaft (28) is installed in the eccentric small shaft hole (34) in a rotating mode.
6. A cloth feed adjusting mechanism of a sewing machine as defined in claim 3, wherein: the positioning gear (17) is circumferentially provided with a limit screw (35), two sides of the sliding groove (29) on the open-needle eccentric wheel (15) are provided with two protruding portions (36), and the limit screw (35) is located between the two protruding portions (36).
7. The cloth feed adjusting mechanism of a sewing machine of claim 1, wherein: an opening button sleeve (19) for installing the opening button (20) is arranged on a machine shell (22) of the sewing machine.
8. The cloth feed adjusting mechanism of a sewing machine of claim 1, wherein: an upper feed dog frame lining (3) is arranged between the upper feed dog frame (2) and the upper feed shaft (4).
9. The cloth feed adjusting mechanism of a sewing machine of claim 1, wherein: the main shaft (21) is mounted in a machine shell (22) of the sewing machine through a bearing (11).
10. The cloth feed adjusting mechanism of a sewing machine of claim 6, wherein: one of the bosses (36) is operable to mount the positioning torsion spring (31).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811404195.0A CN109402877B (en) | 2018-11-23 | 2018-11-23 | Cloth feeding adjusting mechanism of sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811404195.0A CN109402877B (en) | 2018-11-23 | 2018-11-23 | Cloth feeding adjusting mechanism of sewing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109402877A CN109402877A (en) | 2019-03-01 |
| CN109402877B true CN109402877B (en) | 2024-02-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811404195.0A Active CN109402877B (en) | 2018-11-23 | 2018-11-23 | Cloth feeding adjusting mechanism of sewing machine |
Country Status (1)
| Country | Link |
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| CN (1) | CN109402877B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113073428B (en) * | 2020-01-06 | 2023-03-28 | 杰克科技股份有限公司 | Cloth feeding adjusting mechanism of sewing machine |
| CN114381871B (en) * | 2021-12-27 | 2023-03-21 | 际华三五零六纺织服装有限公司 | Pulsation type deviation-rectifying cloth feeding device of lockstitch sewing machine |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010051775A (en) * | 2008-08-29 | 2010-03-11 | Chee Siang Industrial Co Ltd | Differential feed control mechanism of sewing machine |
| CN106988031A (en) * | 2017-06-02 | 2017-07-28 | 杰克缝纫机股份有限公司 | A kind of sewing machine |
| CN107447377A (en) * | 2017-09-19 | 2017-12-08 | 杰克缝纫机股份有限公司 | A kind of sewing machine |
| CN209957999U (en) * | 2018-11-23 | 2020-01-17 | 浙江乐江机械有限公司 | Cloth feeding adjusting mechanism of sewing machine |
-
2018
- 2018-11-23 CN CN201811404195.0A patent/CN109402877B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010051775A (en) * | 2008-08-29 | 2010-03-11 | Chee Siang Industrial Co Ltd | Differential feed control mechanism of sewing machine |
| CN106988031A (en) * | 2017-06-02 | 2017-07-28 | 杰克缝纫机股份有限公司 | A kind of sewing machine |
| CN107447377A (en) * | 2017-09-19 | 2017-12-08 | 杰克缝纫机股份有限公司 | A kind of sewing machine |
| CN209957999U (en) * | 2018-11-23 | 2020-01-17 | 浙江乐江机械有限公司 | Cloth feeding adjusting mechanism of sewing machine |
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| CN109402877A (en) | 2019-03-01 |
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