CN113026223A - Feeding mechanism of sewing machine and sewing machine with feeding mechanism - Google Patents
Feeding mechanism of sewing machine and sewing machine with feeding mechanism Download PDFInfo
- Publication number
- CN113026223A CN113026223A CN201911358867.3A CN201911358867A CN113026223A CN 113026223 A CN113026223 A CN 113026223A CN 201911358867 A CN201911358867 A CN 201911358867A CN 113026223 A CN113026223 A CN 113026223A
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- sewing machine
- lifting
- translation
- driving piece
- connecting rod
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B27/00—Work-feeding means
- D05B27/24—Feed-dog lifting and lowering devices
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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
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B69/00—Driving-gear; Control devices
- D05B69/14—Devices for changing speed or for reversing direction of rotation
- D05B69/18—Devices for changing speed or for reversing direction of rotation electric, e.g. foot pedals
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The invention provides a feeding mechanism of a sewing machine, which comprises a needle plate, a cloth feeding tooth arranged below the needle plate, a tooth frame fixedly connected with the cloth feeding tooth, a lifting assembly, a translation assembly and a controller, wherein the lifting assembly comprises a lifting driving piece, the lifting driving piece is connected to the tooth frame, and the lifting driving piece can drive the tooth frame to lift and drive the cloth feeding tooth to do reciprocating lifting motion relative to the needle plate; the translation assembly comprises a translation driving part, the translation driving part is connected to the tooth frame, and the translation driving part can drive the tooth frame to translate to drive the cloth feeding teeth to do reciprocating translation motion relative to the needle plate; the lifting driving piece and the translation driving piece are both connected to the controller, and the controller can control the operation of the lifting driving piece and the translation driving piece. According to the feeding mechanism of the sewing machine, the controller can coordinate the movement of the lifting assembly and the translation assembly, so that the feeding mechanism has diversified sewing patterns. The invention also provides a sewing machine with the sewing machine feeding mechanism, and the sewing machine has diversified feeding modes and wide application prospect.
Description
Technical Field
The invention belongs to the technical field of sewing machines, and particularly relates to a feeding mechanism of a sewing machine and the sewing machine with the feeding mechanism.
Background
A sewing machine is a machine that uses one or more sewing threads to form one or more stitches in a material to be sewn, thereby interweaving or stitching one or more layers of material. The existing sewing machine has single feeding style, complex sewing material debugging by using different materials, easy scraping and other problems during sewing material discharging.
Disclosure of Invention
In view of the above, there is a need for a feeding mechanism of a sewing machine and a sewing machine having the feeding mechanism, which is capable of diversifying the sewing pattern of the sewing machine.
The invention provides a feeding mechanism of a sewing machine, which comprises a main shaft, a main shaft driving part connected with the main shaft, a needle plate, a cloth feeding tooth arranged below the needle plate and a tooth frame fixedly connected with the cloth feeding tooth, wherein the tooth frame is provided with a first end and a second end which are opposite to each other, and is characterized by further comprising a lifting assembly, a translation assembly and a controller,
the lifting assembly comprises a lifting driving piece, the lifting driving piece is connected to the first end of the tooth frame, and the lifting driving piece can drive the tooth frame to lift and drive the feed dog to do reciprocating lifting motion relative to the needle plate; the translation assembly comprises a translation driving piece, the translation driving piece is connected to the second end of the tooth frame, and the translation driving piece can drive the tooth frame to translate to drive the feed dog to do reciprocating translation motion relative to the needle plate;
the lifting driving piece and the translation driving piece are connected to the controller, and the controller can control the operation of the lifting driving piece and the translation driving piece.
According to the feeding mechanism of the sewing machine, the lifting driving piece and the translation driving piece can respectively control the lifting motion and the translation motion of the feed dog, so that the feed dog can do reciprocating lifting motion and reciprocating translation motion relative to the needle plate to form various feed dog motion tracks, the controller can respectively control the operation of the lifting driving piece and the translation driving piece, further coordinate the motion of the lifting driving piece and the translation driving piece, ensure normal sewing, enable the feeding mechanism of the sewing machine to have diversified sewing material patterns, adapt to different types of sewing materials and expand the application range of the feeding mechanism of the sewing machine,
several alternatives are provided below, but not as an additional limitation to the above general solution, but merely as a further addition or preference, each alternative being combinable individually for the above general solution or among several alternatives without technical or logical contradictions.
In one embodiment, the lifting assembly further comprises a first linkage comprising a first link, a second link, a third link, and a first shaft,
one end of the first connecting rod is fixedly connected with the output end of the lifting driving piece, the other end of the first connecting rod is hinged with one end of the second connecting rod, the other end of the second connecting rod is hinged with one end of the third connecting rod, and the other end of the third connecting rod is fixedly connected with the first rotating shaft; the first rotating shaft is connected to the first end of the dental articulator.
In one embodiment, the lifting assembly further comprises a first linkage comprising a first link, a second link, a third link, and a first shaft,
one end of the first connecting rod is fixedly connected with the output end of the lifting driving piece, the other end of the first connecting rod is hinged with one end of the second connecting rod, the other end of the second connecting rod is hinged with one end of the third connecting rod, and the other end of the third connecting rod is fixedly connected with the first rotating shaft; the first rotating shaft is connected to the first end of the dental articulator.
In one embodiment, the lifting assembly further comprises a tooth lifting rocker, the tooth lifting rocker is sleeved and fixed on the first rotating shaft, the tooth lifting rocker is provided with a guide groove, and the first end of the tooth rack is slidably arranged in the guide groove.
In one of the embodiments, the feeding mechanism of the sewing machine further comprises a slider, the slider is arranged in the guide groove in a penetrating mode, the slider is attached to the side wall forming the guide groove, and the first end of the tooth frame is rotatably connected with the portion, extending out of the guide groove, of the slider.
In one embodiment, the translation assembly further comprises a second linkage mechanism, the second linkage mechanism comprises a fourth link, a fifth link, a sixth link and a second rotating shaft,
one end of the fourth connecting rod is fixedly connected with the output end of the translation driving piece, the other end of the fourth connecting rod is hinged to one end of the fifth connecting rod, the other end of the fifth connecting rod is hinged to one end of the sixth connecting rod, and the other end of the sixth connecting rod is fixedly connected to the second rotating shaft; the second rotating shaft is connected to the second end of the dental articulator.
In one embodiment, the translation assembly further includes a rack mount, the rack mount is sleeved on and fixed to the second rotating shaft, a connection portion is arranged on the rack mount, and the second end of the rack is rotatably connected to the connection portion.
In one embodiment, the feeding mechanism of the sewing machine further comprises a first encoder, a second encoder and a third encoder, the first encoder, the second encoder and the third encoder are all connected to the controller,
the first encoder is connected to the spindle driving part and can detect rotation angle phase data and rotation speed data of the spindle driving part and transmit the data to the controller;
the second encoder is connected to the lifting driving piece, and can detect rotation angle phase data and rotation speed data of the lifting driving piece and transmit the data to the controller;
the third encoder is connected to the translation driving part and can detect rotation angle phase data and rotation speed data of the translation driving part and transmit the data to the controller.
In one embodiment, the lift drive is a motor; and/or the presence of a catalyst in the reaction mixture,
the translation driving part is a motor.
In one embodiment, the lift drive is a stepper motor; and/or the presence of a catalyst in the reaction mixture,
the translation driving piece is a stepping motor.
The invention further provides a sewing machine which comprises the sewing machine feeding mechanism.
According to the sewing machine provided by the invention, the feeding mechanism of the sewing machine is arranged, so that the feeding mode of the sewing machine is diversified, the application range of the sewing machine is expanded, and the sewing machine has a wide application prospect.
Drawings
FIG. 1 is a schematic view of a feed mechanism of a sewing machine according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of the feeding mechanism of the sewing machine shown in FIG. 1 without the spindle and the spindle driving member;
FIG. 3 is a schematic view of a feed mechanism of the sewing machine of FIG. 1;
FIG. 4 is a schematic view of a lifting assembly and a portion of the feed mechanism of the sewing machine of FIG. 1;
FIG. 5 is a schematic view of a portion of the feed mechanism of the sewing machine shown in FIG. 1;
FIG. 6 is a schematic view of a translation assembly and a portion of the structure of the feed mechanism of the sewing machine of FIG. 1;
FIG. 7 is a schematic diagram of a feed dog trajectory;
FIG. 8 is a schematic view of another feed dog trajectory;
FIG. 9 is a schematic view of another feed dog trajectory;
FIG. 10 is a schematic view of another feed dog trajectory;
FIG. 11 is a schematic view of a mechanism of a sewing machine according to an embodiment of the present invention.
Description of reference numerals:
100. a feeding mechanism of the sewing machine; 10. a needle plate; 20. a feed dog; 30. a dental articulator; 31. a first connection portion; 32. a second connecting portion; 33. a third connecting portion; 40. a lifting assembly; 41. lifting the driving piece; 42. a first link mechanism; 421. a first link; 422. a second link; 423. a third link; 424. a first rotating shaft; 43. a feed lifting rocker; 431. a first fixed part; 432. a guide portion; 433. a guide groove; 44. a slider; 50. a translation assembly; 51. a translation drive; 52. a second link mechanism; 521. a fourth link; 522. a fifth link; 523. a sixth link; 524. a second rotating shaft; 53. a dental articulator mount; 531. a second fixed part; 532. a switching part; 60. a main shaft; 70. a main shaft driving member; 200. a sewing machine.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It will be understood that when an element is referred to as being "mounted on" another element, it can be directly mounted on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 and 2, fig. 1 is a schematic structural diagram of a feeding mechanism 100 of a sewing machine according to an embodiment of the present invention; FIG. 2 is a schematic structural view of the feeding mechanism 100 of the sewing machine shown in FIG. 1 without the spindle 60 and the spindle driver 70; the invention provides a feeding mechanism 100 of a sewing machine, wherein the feeding mechanism 100 of the sewing machine is applied to the sewing machine and used for controlling the feeding of the sewing machine, so that the sewing machine has diversified feeding patterns.
The feeding mechanism 100 of the sewing machine comprises a needle plate 10, a feed dog 20, a tooth frame 30, a lifting assembly 40, a translation assembly 50, a spindle 60 and a spindle driving piece 70, wherein the feed dog is arranged below the needle plate 10, the tooth frame 30 is connected to the feed dog 20, and the lifting assembly 40 is connected with the tooth frame 30; the needle plate 10 is used for placing sewing materials, the feed dog 20 is used for achieving sewing material movement, the tooth frame 30 is used for driving the feed dog 20 to move, the lifting assembly 40 provides driving force for the feed dog 20 to ascend or descend relative to the needle plate 10, the translation assembly 50 provides driving force for the feed dog 20 to translate relative to the needle plate, the main shaft 60 is connected with other assemblies and used for achieving machine needle punching materials, thread picking movement and rotating shuttle movement, and the main shaft driving piece 70 provides driving force for main shaft rotation.
Referring to fig. 3, fig. 3 is a schematic structural view of the thread guide 30 of the feeding mechanism 100 of the sewing machine shown in fig. 1. The dental articulator 30 comprises a first connection portion 31 and a second connection portion 32, the first connection portion 31 being connected to the second connection portion 32, the first connection portion 31 being adapted for connection to the feed dog 20 and the second connection portion 32 being adapted for connection to the lifting assembly 40. The first connecting portion 31 is shaped substantially like a flat plate, the first connecting portion 31 is attached to the bottom of the feed dog 20 and fixedly connected to the feed dog 20, and the second connecting portion 32 is shaped substantially like an arc having a center of a circle forming an arc below the first connecting portion 31.
In the present embodiment, the first connecting portion 31 is fixedly connected with the feed dog 20 by a threaded fastener, and the threaded fastener can ensure that the first connecting portion 31 and the feed dog 20 have good motion stability, so as to prevent the tooth frame 30 and the feed dog 20 from loosening and affecting the normal feeding motion of the feed dog 20; it is understood that in other embodiments, the first connecting portion 31 and the feed dog 20 may be fixed by an adhesive connection or the like, as long as the motion stability of the dental articulator 30 and the feed dog 20 can be ensured.
Referring to fig. 4, fig. 4 is a schematic view of a lifting assembly 40 and a portion thereof of the feeding mechanism 100 of the sewing machine shown in fig. 1. The lifting assembly 40 comprises a lifting driving piece 41, a first link mechanism 42 and a tooth lifting rocker 43, wherein the lifting driving piece 41 is fixedly connected to an outer shell of the sewing machine, the lifting driving piece 41 is connected to the first link mechanism 42, the first link mechanism 42 is connected to the tooth lifting rocker 43, and the tooth lifting rocker 43 is connected to the tooth rack 30; the lifting driving piece 41 provides driving force for the lifting or descending of the feed dog 20 relative to the needle plate 10, and the first connecting rod mechanism 42 and the feed dog rocker 43 are used for transmission; the lifting driving piece 41 can drive the tooth lifting rocker 43 to rotate in a reciprocating manner through the first link mechanism 42, and the tooth lifting rocker 43 can drive the feed dog 20 to do reciprocating lifting movement relative to the needle plate 10 through the tooth frame 30.
In this embodiment, the lifting driving member 41 is a motor, specifically a stepping motor, which has a high adjustment precision, and has the advantages of stable transmission, short dynamic time for acceleration and deceleration of the motor, and the like, and is suitable for the feeding mechanism 100 of the sewing machine; it will be appreciated that in other embodiments, other types of drives, or other types of motors, may be used for the lift drive 41.
First link mechanism 42 includes first connecting rod 421, second connecting rod 422, third connecting rod 423 and first pivot 424, first connecting rod 421, second connecting rod 422, third connecting rod 423 and first pivot 424 all have relative first end and second end, the first end of first connecting rod 421 and the output end fixed connection of lifting driving piece 41, the second end of first connecting rod 421 articulates in the first end of second connecting rod 422, the second end of second connecting rod 422 articulates in the first end of third connecting rod 423, the second end fixed connection of third connecting rod 423 in the first end of first pivot 424.
Lifting driving piece 41 can drive first connecting rod 421 around the three hundred sixty degrees rotations of lifting driving piece 41's output, first connecting rod 421 drives third connecting rod 423 through second connecting rod 422 and rotates around certain angle, because third connecting rod 423 fixed connection is in first pivot 424, and then first pivot 424 can rotate around certain angle repeatedly, and because link mechanism's relation of connection, lifting driving piece 41 drives first connecting rod 421 and rotates a week, first pivot 424 can accomplish the reciprocal rotation in certain angle range.
Referring to fig. 5, fig. 5 is a schematic view of a portion of the feeding mechanism 100 of the sewing machine shown in fig. 1. The tooth lifting rocker 43 includes a first fixing portion 431 and a guide portion 432, the first fixing portion 431 is fixedly connected with the guide portion 432, the first fixing portion 431 is substantially columnar and is fixedly sleeved at the second end of the first rotating shaft 424, the guide portion 432 is substantially flat, the guide portion 432 is provided with a guide groove 433, and the guide groove 433 is used for connecting the second connecting portion 32.
The feeding mechanism 100 of the sewing machine further comprises a sliding block 44, the sliding block 44 is arranged in the guide groove 433 and can slide along the guide groove 433, and the second connecting part 32 is rotatably connected with the part of the sliding block 44 extending out of the guide groove 433, so that the second connecting part 32 is connected to the feed lifting rocker 43 through the sliding block 44; when the first rotating shaft 424 rotates, the feed lifting rocker 43 rotates together with the first rotating shaft 424, the slider 44 slides along the guide groove 433 and drives the second connecting part 32 to ascend or descend relative to the needle plate 10, so that the feed dog 20 is driven by the tooth rack 30 to reciprocate relative to the needle plate 10.
In the embodiment, the sliding block 44 is attached to the side wall forming the guide groove 433, so that the sliding block 44 does not shake relative to the side wall of the guide groove 433 when sliding along the guide groove 433, the transmission stability is improved, the stable movement of the feed dog 20 relative to the needle plate 10 is facilitated, and the normal feeding is further facilitated; it is understood that in other embodiments, the slider 44 may not engage the side wall of the guide groove 433 as long as the corresponding transmission relationship is achieved.
The lifting driving piece 41 can independently control the cloth feeding teeth to do reciprocating lifting motion relative to the needle plate through the first connecting rod mechanism 42 and the lifting tooth rocker 43, and then the lifting driving piece 41 can change the lifting or descending speed of the cloth feeding teeth 20 to form different cloth feeding tooth motions, so that the sewing machine feeding mechanism 100 has diversified feeding styles, is suitable for different types of sewing materials, and enlarges the application range of the sewing machine feeding mechanism 100.
Referring to fig. 6, fig. 6 is a schematic view of a translation assembly 50 and a portion of the structure of the feeding mechanism 100 of the sewing machine shown in fig. 1. A translation assembly 50 is connected to the dental articulator 30, the translation assembly 50 being adapted to effect a reciprocating translational movement of the feed dog 20 with respect to the needle plate 10.
The translation assembly 50 comprises a translation driving part 51, a second link mechanism 52 and a dental articulator seat 53, the translation driving part 51 is fixedly connected with the external shell, the translation driving part 51 is connected with the second link mechanism 52, the second link mechanism 52 is connected with the dental articulator seat 53, and the dental articulator seat 53 is connected with the dental articulator 30; the translational driving piece 51 provides driving force for the reciprocating translational movement of the feed dog 20 relative to the needle plate 10, and the second connecting rod mechanism 52 and the tooth frame seat 53 are used for transmission; the translational driving piece 51 can drive the tooth frame seat 53 to rotate back and forth through the second link mechanism 52, and the tooth frame seat 53 can drive the feed dog 20 to do reciprocating translational motion relative to the needle plate 10 through the tooth frame 30.
In the present embodiment, the translation driving member 51 is a motor, specifically a stepping motor, which has a high adjustment precision, and has the advantages of stable transmission, short dynamic time for acceleration and deceleration of the motor, and the like, and is suitable for the present invention; it is understood that in other embodiments, other types of drives, or other types of motors, may be used for the translation drive 51.
The second link mechanism 52 includes a fourth link 521, a fifth link 522, a sixth link 523 and a second rotating shaft 524, the fourth link 521, the fifth link 522, the sixth link 523 and the second rotating shaft 524 respectively have a first end and a second end which are oppositely disposed, the first end of the fourth link 521 is fixedly connected to the output end of the translational driving member 51, the second end of the fourth link 521 is hinged to the first end of the fifth link 522, the second end of the fifth link 522 is hinged to the first end of the sixth link 523, and the second end of the sixth link 523 is fixedly connected to the first end of the second rotating shaft 524.
The dental articulator 30 further comprises a third connecting portion 33, wherein the third connecting portion 33 is fixedly connected with the first connecting portion 31, and the third connecting portion 33 is substantially arc-shaped, and the center of a circle forming the arc is located above the first connecting portion 31. The dental frame base 53 includes a second fixing portion 531 and an adapting portion 532, the second fixing portion 531 is fixedly connected to the adapting portion 532, the second fixing portion 531 is substantially cylindrical, the second rotating shaft 524 is fixedly sleeved on the second fixing portion 531, and the adapting portion 532 is rotatably connected to the third connecting portion 33.
The translation driving part 51 can independently control the feed dog 20 to do reciprocating translation motion relative to the needle plate 10 through the second link mechanism 52 and the tooth frame seat 53, so that the translation speed of the feed dog 20 can be changed through the translation driving part 51, diversified feeding patterns can be formed, and the feed dog sewing machine is favorable for adapting to different sewing materials.
The translation component 50 can change the reciprocating translation speed of the feed dog 20, the lifting component 40 can change the reciprocating lifting speed of the feed dog 20, and then the translation component 50 can form more diversified feeding patterns by combining the lifting component 40, so that the sewing machine feeding mechanism 100 can be suitable for various sewing materials, and the application range of the sewing machine feeding mechanism 100 is greatly enlarged.
The feeding mechanism 100 further includes a controller (not shown), the main shaft driving element 70, the lifting driving element 41 and the translation driving element 51 are electrically connected to the controller, and the controller can control the operation of the main shaft driving element 70, the lifting driving element 41 and the translation driving element 51.
It should be noted that the above "the controller can control the operations of the spindle driver 70, the lifting driver 41 and the translation driver 51" not only means that the controller can control the start of each driver, but also can control the operation speed, start time and end time of the spindle driver 70, the lifting driver 41 and the translation driver 51 respectively. Therefore, during the periodic movement of one needle pitch, the controller can control the lifting driving piece 41 to drive the cloth feeding teeth 20 to complete the reciprocating lifting movement of one period, and the controller can control the translation driving piece 51 to drive the cloth feeding teeth 20 to complete the reciprocating translation movement of one period, so that the main shaft driving piece 70, the lifting driving piece 41 and the translation driving piece 51 work in a coordinated manner, and the sewing of one needle pitch is realized; and during this period, the lifting drive 41 can change the translation speed of the feed dog 20, and the translation drive 51 can change the lifting speed of the feed dog 20, thereby realizing diversification of the sewing pattern.
The feeding mechanism 100 of the sewing machine further includes a first encoder (not shown), a second encoder (not shown) and a third encoder (not shown), the first encoder, the second encoder and the third encoder are electrically connected to the controller, and the first encoder is connected to the main shaft driving member 70, and is capable of detecting the rotation angle phase and the rotation speed of the main shaft driving member 70 and transmitting the rotation phase angle data and the rotation speed data of the main shaft driving member 70 to the controller; the second encoder is connected to the lifting driving member 41, can detect the rotation angle phase and the rotation speed of the lifting driving member 41, and transmits the rotation phase angle data and the rotation speed data of the lifting driving member 41 to the controller; the third encoder is connected to the translation driver 51, and is capable of detecting the rotational angle phase and the rotational speed of the translation driver 51 and transmitting the rotational phase angle data and the rotational speed data of the translation driver 51 to the controller.
The setting of first encoder, second encoder and third encoder can accurately reflect the running state of main shaft driving piece 70, lifting driving piece 41 and translation driving piece 51 respectively, and then be convenient for the accurate motion of coordinating main shaft driving piece 70, lifting driving piece 41 and translation driving piece 51 of controller to improve and make up the precision.
According to the feeding mechanism of the sewing machine, the diversification of sewing materials can be realized by lifting the driving piece and translating the driving piece. Please refer to fig. 7 to 10 together, fig. 7 is a diagram illustrating a trajectory of a feed dog; FIG. 8 is a schematic view of another feed dog trajectory; FIG. 9 is a schematic view of another feed dog trajectory; fig. 10 is a schematic view of another feed dog trajectory.
In any feed dog trajectory of fig. 7 to 10, the amounts of movement in the front-rear direction from the feed dog 20 above and below the upper surface of the needle plate 20 are constant, achieving a constant feed pitch. Therefore, the sewing machine can make the length of the stitch formed constant even if the position of the feed dog 20 above and below the upper surface of the needle plate 20 is changed.
In the feeding trajectory diagram shown in fig. 8, the feeding operation of the feed dog 20 starts later than the feeding trajectory diagram shown in fig. 7, that is, the feed dog 20 starts to feed the material after the main shaft driving element drives and retracts a part of the thread relative to the feeding trajectory diagram shown in fig. 7, and the tightness of the upper thread relative to the material is good in the sewing mode; in the feeding trace diagram shown in fig. 9, the feeding operation of the feed dog 20 is completed earlier than the feeding trace diagram shown in fig. 7, that is, the feeding operation is completed before the needle is inserted into the sewing material by driving the main shaft driving member with respect to fig. 7, and the sewing machine can prevent the needle from bending and breaking when sewing thick materials; the feed trajectory diagram 10 is similar to the feed trajectory diagram shown in fig. 7 in that the feed motion of the feed dog 20 starts later and ends earlier, and has the same advantages as the feed trajectory diagram shown in fig. 8 and the feed trajectory diagram shown in fig. 9.
It should be noted that fig. 7 to 10 only list a few feed tracks of the feed dog 20, and in other embodiments, various feed tracks of different types of feed dogs can be realized by driving the lifting driving member 41 and the translation driving member 51.
According to the sewing machine feeding mechanism 100 provided by the invention, the lifting driving piece 41 and the translation driving piece 51 can respectively control the lifting motion and the translation motion of the cloth feeding teeth 20, so that the cloth feeding teeth 20 can do reciprocating lifting motion and reciprocating translation motion relative to the needle plate 10 to form various movement tracks of the cloth feeding teeth 20, the controller can respectively control the operation of the lifting driving piece 41 and the translation driving piece 51, and further coordinate the movement of the lifting driving piece 41 and the translation driving piece 51, so that the sewing machine feeding mechanism 100 has diversified sewing material patterns while ensuring normal sewing, can adapt to different types of sewing materials, and can enlarge the application range of the sewing machine feeding mechanism 100.
Referring to fig. 11, fig. 11 is a schematic structural diagram of a sewing machine 200 according to an embodiment of the present invention. The invention also provides a sewing machine 200, and the sewing machine 200 is provided with the sewing machine feeding mechanism 100, so that the feeding style of the sewing machine 200 is diversified, the application range of the sewing machine 200 is expanded, and the sewing machine 200 has wide application prospect.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
It should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as a limitation of the present invention, and that suitable changes and modifications of the above embodiments are within the scope of the claimed invention as long as they are within the spirit and scope of the present invention.
Claims (10)
1. A feeding mechanism (100) of a sewing machine comprises a main shaft (60), a main shaft driving part (70) connected with the main shaft (60), a needle plate (10), a cloth feeding tooth (20) arranged below the needle plate (10) and a tooth frame (30) fixedly connected with the cloth feeding tooth (20), wherein the tooth frame (30) is provided with a first end and a second end which are opposite to each other, and is characterized in that the feeding mechanism (100) of the sewing machine further comprises a lifting assembly (40), a translation assembly (50) and a controller,
the lifting assembly (40) comprises a lifting driving piece (41), the lifting driving piece (41) is connected to the first end of the tooth frame (30), and the lifting driving piece (41) can drive the tooth frame (30) to lift and drive the feed dog (20) to do reciprocating lifting motion relative to the needle plate (10); the translation assembly (50) comprises a translation driving part (51), the translation driving part (51) is connected to the second end of the tooth holder (31), and the translation driving part (51) can drive the tooth holder (30) to translate to drive the feed dog (20) to do reciprocating translation motion relative to the needle plate (10);
the lifting driving piece (41) and the translation driving piece (51) are connected to the controller, and the controller can control the operation of the lifting driving piece (41) and the translation driving piece (51).
2. The sewing machine feed mechanism (100) of claim 1, wherein the lift assembly (40) further comprises a first linkage (42), the first linkage (42) comprising a first link (421), a second link (422), a third link (423), and a first shaft (424),
one end of the first connecting rod (421) is fixedly connected with the output end of the lifting driving element (41), the other end of the first connecting rod (421) is hinged with one end of the second connecting rod (422), the other end of the second connecting rod (422) is hinged with one end of the third connecting rod (423), and the other end of the third connecting rod (423) is fixedly connected with the first rotating shaft (424); the first rotating shaft is connected to the first end of the dental articulator.
3. The feeding mechanism (100) of sewing machine according to claim 2, wherein the lifting assembly (40) further comprises a lifting tooth rocker (43), the lifting tooth rocker (43) is sleeved on and fixed to the first rotating shaft (424), the lifting tooth rocker (43) is provided with a guide groove (433), and the first end of the tooth rack (30) is slidably arranged in the guide groove (433).
4. The feeding mechanism (100) of sewing machine according to claim 3, wherein the feeding mechanism (100) further comprises a slider (44), the slider (44) is inserted into the guiding groove (433), the slider (44) is attached to the side wall forming the guiding groove (433), and the first end of the tooth holder (30) is rotatably connected to the portion of the slider (44) extending out of the guiding groove (433).
5. Sewing machine feed mechanism (100) according to claim 1, wherein said translation assembly further comprises a second linkage (52), said second linkage (52) comprising a fourth link (521), a fifth link (522), a sixth link (523) and a second shaft (524),
one end of the fourth connecting rod (521) is fixedly connected with the output end of the translational driving element (51), the other end of the fourth connecting rod (521) is hinged to one end of the fifth connecting rod (522), the other end of the fifth connecting rod (522) is hinged to one end of the sixth connecting rod (523), and the other end of the sixth connecting rod (523) is fixedly connected to the second rotating shaft (524); the second rotating shaft is connected to the second end of the dental articulator.
6. The feeding mechanism (100) of sewing machine according to claim 5, wherein the translating assembly (50) further comprises a rack holder (53), the rack holder (53) is sleeved on and fixed to the second rotating shaft (524), an adapter portion (532) is arranged on the rack holder (53), and the second end of the rack (53) is rotatably connected to the adapter portion (532).
7. The sewing machine feed mechanism (100) of claim 1, wherein the sewing machine feed mechanism (100) further comprises a first encoder, a second encoder, and a third encoder, the first encoder, the second encoder, and the third encoder each being coupled to the controller,
the first encoder is connected to the spindle driving part (70), and can detect the rotation angle phase data and the rotation speed data of the spindle driving part (70) and transmit the data to the controller;
the second encoder is connected to the lifting driving element (40), and can detect the rotation angle phase data and the rotation speed data of the lifting driving element (40) and transmit the data to the controller;
the third encoder is connected to the translational drive member (50), and the third encoder can detect the rotation angle phase data and the rotation speed data of the translational drive member (50) and transmit the data to the controller.
8. The sewing machine feed mechanism (100) of claim 7, wherein the lift drive (41) is a motor; and/or the presence of a catalyst in the reaction mixture,
the translation driving piece (51) is a motor.
9. The sewing machine feed mechanism (100) of claim 8, wherein the lift drive (41) is a stepper motor; and/or the presence of a catalyst in the reaction mixture,
the translation driving piece (51) is a stepping motor.
10. A sewing machine (200), the sewing machine (200) comprising a sewing machine feed mechanism, characterized in that the sewing machine feed mechanism is the sewing machine feed mechanism (100) according to any one of claims 1 to 9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911358867.3A CN113026223A (en) | 2019-12-25 | 2019-12-25 | Feeding mechanism of sewing machine and sewing machine with feeding mechanism |
| PCT/CN2020/105399 WO2021128842A1 (en) | 2019-12-25 | 2020-07-29 | Feeding mechanism of sewing machine and sewing machine comprising feeding mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911358867.3A CN113026223A (en) | 2019-12-25 | 2019-12-25 | Feeding mechanism of sewing machine and sewing machine with feeding mechanism |
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| CN201911358867.3A Pending CN113026223A (en) | 2019-12-25 | 2019-12-25 | Feeding mechanism of sewing machine and sewing machine with feeding mechanism |
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| WO (1) | WO2021128842A1 (en) |
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| WO2021128842A1 (en) | 2021-07-01 |
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Address after: 318000 no.1008, east section of Donghai Avenue, Sanjia, Jiaojiang District, Taizhou City, Zhejiang Province Applicant after: Jack Technology Co.,Ltd. Address before: 318000 no.1008, east section of Donghai Avenue, Sanjia, Jiaojiang District, Taizhou City, Zhejiang Province Applicant before: JACK SEWING MACHINE Co.,Ltd. |
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Application publication date: 20210625 |