CN212357605U - Driving device for lifting presser foot and adjusting needle distance in sewing machine - Google Patents
Driving device for lifting presser foot and adjusting needle distance in sewing machine Download PDFInfo
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- CN212357605U CN212357605U CN202022216183.4U CN202022216183U CN212357605U CN 212357605 U CN212357605 U CN 212357605U CN 202022216183 U CN202022216183 U CN 202022216183U CN 212357605 U CN212357605 U CN 212357605U
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Abstract
The utility model provides a lift drive arrangement of presser foot and gauge needle regulation among sewing machine belongs to sewing machine technical field. The problems that a driving device for lifting the presser foot and adjusting the needle pitch in the existing sewing machine is high in cost and complex in structure are solved. The driving device for lifting the presser foot and adjusting the needle pitch in the sewing machine comprises a motor, a cam fixed on a rotating shaft of the motor, a shaft, a swing rod and a transmission piece, wherein the swing rod and the transmission piece are adjacently sleeved on the shaft, the cam drives the presser foot lifting mechanism through swing rod transmission, the transmission piece is in a cylindrical shape, a first transmission mechanism is arranged between one end of the transmission piece and the cam, and a second transmission mechanism is arranged between the other end of the transmission piece and the needle pitch adjusting mechanism. The driving device for lifting the presser foot and adjusting the needle pitch in the sewing machine has the advantages of compact and simple structure, strong reliability, low production cost and the like.
Description
Technical Field
The utility model belongs to the technical field of sewing machine, a lift drive arrangement of presser foot and gauge needle regulation among the sewing machine is related to.
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. A plurality of mechanisms are arranged in the sewing machine, and the sewing materials are sewn through reasonable matching and circulating work among the mechanisms. In the conventional sewing machine, the motion of each mechanism is controlled by a pure mechanical structure in cooperation with manual operation of a user, so that the operation is inconvenient and the efficiency is low.
In order to solve the problems, the Chinese patent discloses a sewing machine controlled by three stepping motors, which has a backstitch device, a presser foot device and a thread trimming device, wherein the backstitch device is provided with the backstitch stepping motor, the presser foot device is provided with the presser foot stepping motor, the thread trimming device is provided with the thread trimming stepping motor, the backstitch device is controlled by the backstitch stepping motor, the presser foot device is controlled by the presser foot stepping motor, and the thread trimming device is controlled by the thread trimming stepping motor. Through the use of three stepping motors, the intelligent control of the sewing machine is realized, and the working efficiency is improved. However, the fact that the three stepping motors are respectively driven means that three sets of transmission mechanisms need to be correspondingly arranged, which not only causes the production cost of enterprises to become very high and the structure to be complex, but also occupies a large space inside the sewing machine, causes the parts to be crowded and difficult to dissipate heat, and causes the problem of mechanism interference to be easily caused, thereby causing the reliability to be insufficient.
At present, some ways of driving a plurality of mechanisms by using one motor appear in the market, for example, a pressure raising pin and a needle pitch adjustment are taken as examples, a cam/crank and a needle pitch adjustment cam/crank are respectively fixed on a rotating shaft of a single motor, the pressure raising pin mechanism is driven by the cam/crank, the needle pitch adjustment mechanism is driven by the needle pitch adjustment cam/crank, and the working positions of the cam/crank and the needle pitch adjustment cam/crank are staggered within the rotating angle of the rotating shaft of the motor so as to avoid interference between the mechanisms. In this way, in order to fix the cam/crank and adjust the pitch, the rotating shaft of the motor needs to be lengthened or used with some couplings, and in any case, the coaxiality between the two cams/cranks is deteriorated due to the lengthened axial length, thereby affecting the control precision.
Disclosure of Invention
The utility model aims at the above-mentioned problem that prior art exists, provide lift the drive arrangement of presser foot and gauge needle regulation among the sewing machine, solved problem with high costs, that the structure is complicated.
The purpose of the utility model can be realized by the following technical proposal:
the driving device for lifting the presser foot and adjusting the needle pitch in the sewing machine comprises a motor and a cam fixed on a rotating shaft of the motor, and is characterized by further comprising a shaft, a swing rod and a transmission piece, wherein the swing rod and the transmission piece are adjacently sleeved on the shaft, the cam drives a presser foot lifting mechanism through the swing rod transmission, the transmission piece is cylindrical, a first transmission mechanism is arranged between one end of the transmission piece and the cam, and a second transmission mechanism is arranged between the other end of the transmission piece and the needle pitch adjusting mechanism.
The sewing machine is provided with a presser foot lifting mechanism and a needle distance adjusting mechanism, the cam and the presser foot lifting mechanism can establish transmission through the arrangement of the oscillating bar, and the presser foot lifting mechanism can be driven through the transmission of the cam and the oscillating bar when the motor rotates, so that the presser foot lifting action is executed. The cam and the needle pitch adjusting mechanism can establish transmission through the arrangement of the transmission piece, when the motor rotates, the transmission piece is driven to rotate through the transmission mechanism I, and the transmission piece drives the needle pitch adjusting mechanism through the transmission mechanism II again, so that the needle pitch adjusting action is executed. Through the arrangement, the driving device can drive the presser foot lifting mechanism and the needle distance adjusting mechanism to work only through one motor and one cam, and the production cost is well reduced. Meanwhile, the oscillating bar and the transmission piece are sleeved on the same shaft, which means that redundant structures needing to position the oscillating bar or the transmission piece are omitted, and the oscillating bar and the transmission piece are arranged adjacently and then form a transmission relation with the cam, so that the whole structure becomes more compact. And the transmission part is in a cylindrical shape and has a certain length, so that the distance between the presser foot lifting mechanism and the needle pitch adjusting mechanism can be shortened, the problem of interference between the presser foot lifting mechanism and the needle pitch adjusting mechanism caused by the compact structure is avoided, and the reliability of the structure is ensured.
The driving of the presser foot lifting mechanism and the needle distance adjusting mechanism is realized by a cam, the transmission piece and the swing rod are both arranged on a feeding shaft of the sewing machine, and an additional positioning structure of the transmission piece and the swing rod is omitted, so that the structure of the whole driving device is well simplified, and particularly, the power transmission process between the cam and the presser foot lifting mechanism, between the cam and the transmission piece and between the transmission piece and the needle distance adjusting mechanism is simpler, so that the sewing machine is more coherent and more efficient when executing each action, the control is more convenient, and the reliability is higher.
In the driving device for lifting the presser foot and adjusting the needle pitch in the sewing machine, the outer edge of the cam is abutted against the oscillating bar, and the first transmission mechanism is arranged at one end of the side part of the cam and the transmission piece, which is close to the cam.
The outer edge of the cam is directly matched with the swing rod, one side of the cam is directly matched with the first transmission mechanism, and no redundant connection exists in the middle, so that the structure is further compact.
In the driving device for lifting the presser foot and adjusting the needle pitch in the sewing machine, the first transmission mechanism comprises a first swing arm integrally formed at one end of the transmission member or fixedly connected to one end of the transmission member, and the first swing arm is positioned at one side of the cam and is in transmission connection with the cam. When the cam rotates, the first swing arm is driven to swing, so that the transmission piece swings and drives the needle pitch adjusting mechanism to execute needle pitch adjusting action through the transmission mechanism II. Through directly setting up first swing arm in one side of cam and forming the transmission and be connected for the cam is closer along axial distance with the driving medium, and the structure becomes compacter.
In the driving device for presser foot lifting and needle distance adjustment in the sewing machine, the first swing arm is provided with a matching hole, the transmission mechanism further comprises a guide head fixedly connected to one side of the cam, the guide head is inserted into the matching hole, and when the cam rotates, the guide head can move along the hole wall of the matching hole and push the first swing arm to rotate around the axis of the transmission piece.
When the cam rotates, the guide head moves along the hole wall of the matching hole, so that the first swing arm is pushed to rotate around the axis of the transmission piece, and the transmission piece rotates to drive the needle pitch adjusting mechanism to execute needle pitch adjusting action through the transmission mechanism II. The guide head is inserted into the matching hole to further draw the distance between the cam and the transmission piece along the axial direction, so that the structure is further compact and simple.
In the driving device for presser foot lifting and needle distance adjustment in the sewing machine, as another technical scheme, one side of the first swing arm is fixedly connected with a guide head, the transmission mechanism further comprises a guide groove arranged on one side of the cam, the guide head is positioned in the guide groove, and when the cam rotates, the groove wall of the guide groove can move relative to the guide head and push the first swing arm to rotate around the axis of the transmission piece.
When the cam rotates, the groove wall of the guide groove moves relative to the guide head, so that the first swing arm is pushed to rotate around the axis of the transmission piece, and the transmission piece rotates to drive the needle pitch adjusting mechanism to execute needle pitch adjusting action through the transmission mechanism II. The cooperation of guide head and guide way further draws the cam and the distance of driving medium along the axial for the structure further becomes compact, simple.
In the driving device for lifting the presser foot and adjusting the needle pitch in the sewing machine, the needle pitch adjusting mechanism comprises a swinging seat, the swinging seat is arranged adjacent to the other end of the transmission member, and the transmission mechanism II is arranged on one side of the swinging seat close to the transmission member.
The swing seat and the other end of the transmission piece are arranged adjacently, the second transmission mechanism is arranged on one side of the swing seat close to the transmission piece, and the first transmission mechanism is arranged between one side of the cam and the transmission piece, so that the length of the driving device along the axial direction is shorter under the condition that the two mechanisms do not interfere with each other, and the structure is more compact.
In the driving device for lifting the presser foot and adjusting the needle pitch in the sewing machine, the second transmission mechanism comprises a second swing arm which is integrally formed at the other end of the transmission member or fixedly connected with the other end of the transmission member, and the second swing arm is in transmission connection with the swing seat.
Through the transmission connection of the second swing arm and the swing seat, the requirement that the swing seat is driven to swing when the transmission part rotates is met, the distance between the transmission part and the swing seat along the axial direction is closer, and the structure of the driving device is further compact.
In the driving device for lifting the presser foot and adjusting the needle pitch in the sewing machine, the second transmission mechanism further comprises a connecting rod, one end of the connecting rod is hinged to one side of the second swing arm, the other end of the connecting rod is hinged to one side of the swing seat, or the end part of the second swing arm is hinged to one side of the swing seat.
When the transmission part rotates, the second swing arm can drive the swing seat to swing only through the connecting rod or the second swing arm directly drives the swing seat to swing, so that the needle pitch adjusting action is realized, the structure of the whole device is further simplified, and the structure becomes more compact.
In the driving device for lifting the presser foot and adjusting the needle pitch in the sewing machine, the swing rod comprises an annular sleeve joint part and a rod body protruding out of the outer peripheral surface of the sleeve joint part, the presser foot lifting mechanism comprises a push rod capable of being lifted upwards, the lower end of the push rod is abutted against the upper side of the rod body, and the outer edge of the cam is abutted against the lower side of the rod body.
The swing rod is sleeved on the shaft through the sleeving part, the lower end of the ejector rod abuts against the upper side of the rod body, the outer edge of the cam abuts against the lower side of the rod body, and when the cam rotates, the outer edge surface of the cam can directly push the swing rod to swing so as to lift the ejector rod to lift the presser foot. The structure of the oscillating bar enables the matching structure of the cam and the presser foot lifting mechanism to be more compact. Meanwhile, the oscillating bar is matched with the cam at the outer edge, and the transmission piece is matched with the cam at one side of the cam, so that mutual noninterference between the two mechanisms is ensured.
In the driving device for adjusting the presser foot lifting and the needle pitch in the sewing machine, the shaft is a feeding shaft of the sewing machine.
The feeding shaft is of the existing structure of the sewing machine, the swing rod and the transmission piece are sleeved on the feeding shaft, extra supporting or positioning structures can be omitted, the occupied internal space of the sewing machine is reduced, and each mechanism of the sewing machine forms a whole in an orderly and compact mode.
Compared with the prior art, the driving device for lifting the presser foot and adjusting the needle pitch in the sewing machine has the following advantages:
1. the presser foot lifting mechanism and the needle pitch adjusting mechanism can be driven to work only by one motor and one cam, so that the production cost is well reduced;
2. the oscillating bar and the transmission piece are sleeved on the same shaft, which means that redundant structures needing to position the oscillating bar or the transmission piece are omitted, and the oscillating bar or the transmission piece is combined with the oscillating bar and the transmission piece which are adjacently arranged and then form a transmission relation with the cam, so that the whole structure becomes more compact, and the transmission piece is arranged in a cylindrical shape, so that the distance between the presser foot lifting mechanism and the needle distance adjusting mechanism is shortened, the problem of interference between the presser foot lifting mechanism and the needle distance adjusting mechanism caused by the compact structure is solved, and the reliability of the structure is ensured;
3. the swing rod and the transmission piece are sleeved on the existing feeding shaft of the sewing machine, so that an additional supporting or positioning structure can be omitted, the occupied internal space of the sewing machine is reduced, and each mechanism of the sewing machine is orderly and compactly formed into a whole.
Drawings
Fig. 1 is a schematic view of a first embodiment of the driving device.
FIG. 2 is a schematic view of the cam and the plunger of the first embodiment of the driving device.
Fig. 3 is a schematic plan view of a cam in the first embodiment of the driving device.
FIG. 4 is a schematic plan view of the first embodiment when the cam does not lift the jack.
FIG. 5 is a schematic plan view of the cam lifting the ram according to the first embodiment.
FIG. 6 is a schematic view of the driving device according to one embodiment of the present invention.
FIG. 7 is a schematic plan view of the driving device at the engaging portion of the driving member according to the first embodiment of the present invention.
FIG. 8 is a schematic plan view of the cam and the engaging portion in the needle pitch adjustment according to the first embodiment.
FIG. 9 is a schematic plan view of the cam and the engaging portion when the needle pitch is not adjusted in the first embodiment.
In the figure, 1, a motor; 2. a cam; 2a, lifting a presser foot working surface; 2a1, working section; 2b, lifting and pressing the idle stroke surface; 3. a swing rod; 3a, a sleeve joint part; 3b, a rod body; 4. a transmission member; 5. a connecting rod; 6. a guide head; 7. swinging the working surface; 8. swinging an idle stroke surface; 9. a yielding concave surface; 10. a feed shaft; 11. a top rod; 12. a swing seat; 13. a first swing arm; 13a, a fitting hole; 14. and a second swing arm.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
Example one
As shown in fig. 1, 2 and 6, the driving device for presser foot lifting and needle distance adjustment in a sewing machine comprises a presser foot lifting mechanism and a needle distance adjustment mechanism, the driving device comprises a motor 1 arranged at the bottom position of the sewing machine, a cam 2, a shaft, and a swing rod 3 and a transmission member 4 which are adjacently sleeved on the shaft, the cam 2 is fixed on a rotating shaft of the motor 1, the swing rod 3 and the transmission member 4 are both axially fixed with the shaft (the swing rod 3 and the transmission member 4 can be clamped by a fixing clamp spring on the shaft to prevent axial movement), the cam 2 drives the presser foot lifting mechanism through the swing rod 3, the transmission member 4 is cylindrical, a first transmission mechanism is arranged between one end of the transmission member 4 and the cam 2, specifically, the swing rod 3 abuts against the outer edge of the cam 2, and the first transmission mechanism is arranged between one side of the cam 2 and the transmission member 4. A second transmission mechanism is arranged between the other end of the transmission piece 4 and the needle pitch adjusting mechanism. In this embodiment, the sewing machine further includes a feeding shaft 10, and the shaft sleeved by the swing rod 3 and the transmission member 4 is the feeding shaft 10.
Specifically, as shown in fig. 2 and 3, the presser foot lifting mechanism includes a push rod 11 capable of lifting upward, the swing rod 3 includes a sleeve portion 3a sleeved on the feeding shaft 10 and a rod body 3b protruding from the outer peripheral surface of the sleeve portion 3a, the lower end of the push rod 11 abuts against the upper side of the end portion of the rod body 3b, and the outer edge of the cam 2 abuts against the lower side of the end portion of the rod body 3 b. The outer edge of the cam 2 comprises a pressure lifting and pressing foot working surface 2a and a pressure lifting and pressing foot idle stroke surface 2b with one end connected with the pressure lifting and pressing foot working surface 2a, and when the pressure lifting and pressing foot working surface 2a abuts against the oscillating bar 3, the oscillating bar 3 can be driven to lift the ejector rod 11 upwards; when the cam 2 rotates to drive the needle pitch adjusting mechanism to work, the pressure lifting and pressing foot idle stroke surface 2b is matched with the oscillating bar 3 to keep the oscillating bar 3 still. Specifically, the pressure raising and pressing foot idle stroke surface 2b is an arc surface and is concentrically arranged with the rotation center of the cam 2, the pressure raising and pressing foot working surface 2a comprises two symmetrical working sections 2a1, one ends of the two working sections 2a1 are connected, the other ends of the two working sections 2a1 are connected with the two ends of the pressure raising and pressing foot idle stroke surface 2b, and the distance between the two working sections 2a1 is gradually reduced along the direction away from the center of the cam 2.
As shown in fig. 4, when the cam 2 rotates to press the pressure lifting pin idle stroke surface 2b against the swing rod 3, the swing rod 3 is kept still; as shown in fig. 5, when the cam 2 rotates to the position where the pressure raising and pressing foot idle stroke surface 2b is connected with the pressure raising and pressing foot working surface 2a and abuts against the oscillating bar 3, the eccentric arrangement of the pressure raising and pressing foot working surface 2a means that the oscillating bar 3 can be driven to swing upwards along with the subsequent rotation of the motor 1, so that the push rod 11 is raised upwards to complete the pressure raising and pressing foot lifting. Specifically, during driving, the contact position of the oscillating bar 3 and the working surface 2a of the pressure foot lifting is transferred from one of the working sections 2a1 to the other working section 2a1, and in the process of contacting with the initial working section 2a1, along with the rotation of the rotating shaft of the motor 1, the inclination of the working section 2a1 can generate driving force for the oscillating bar 3 to enable the oscillating bar 3 to swing upwards to lift the pressure foot until the pressure foot is lifted to the highest point when the connection position of the two working sections 2a1 is contacted with the oscillating bar 3; when the rotating shaft of the motor 1 rotates to the other working section 2a1 to be contacted with the swing rod 3, the swing rod 3 is not driven by driving force any more, and the push rod 11 is reset under the action of the reset component of the presser foot lifting mechanism. The arrangement mode of the presser foot lifting working surface 2a enables the presser foot to be lifted and automatically put down after the presser foot is lifted when the rotating shaft of the motor 1 rotates reversely.
The needle pitch adjusting mechanism comprises a swinging seat 12 capable of swinging, the swinging seat 12 is arranged adjacent to one end of the transmission part 4, and the transmission mechanism II is arranged on one side of the swinging seat 12 close to the transmission part 4. The second transmission mechanism comprises a second swing arm 14 which is integrally formed at one end of the transmission piece 4 or fixedly connected to one end of the transmission piece 4, and the second swing arm 14 is in transmission connection with the swing base 12. Further, the second transmission mechanism further comprises a connecting rod 5, one end of the connecting rod 5 is hinged to one side of the second swing arm 14, and the other end of the connecting rod 5 is hinged to one side of the swing seat 12, or the end part of the second swing arm 14 is directly hinged to one side of the swing seat 12. The first transmission mechanism comprises a first swing arm 13 which is integrally formed at the other end of the transmission piece 4 or fixedly connected to the other end of the transmission piece 4, and the first swing arm 13 is positioned at one side of the cam 2 and is in transmission connection with the cam 2. The first swing arm 13 is provided with a matching hole 13a, the first transmission mechanism further comprises a guide head 6 fixedly connected to one side of the cam 2, the guide head 6 is inserted into the matching hole 13a, and when the cam 2 rotates, the guide head 6 can move along the hole wall of the matching hole 13a and pushes the first swing arm 13 to rotate around the axis of the transmission piece 4. The hole wall of the matching hole 13a comprises a swinging working surface 7 and a swinging idle stroke surface 8 connected to one end of the swinging working surface 7, and when the cam 2 rotates, the swinging working surface 7 is matched with the guide head 6 to drive the first swinging arm 13 to rotate; when the cam 2 rotates to drive the presser foot lifting mechanism to work, the swinging idle stroke surface 8 is matched with the guide head 6 to keep the first swinging arm 13 still. Specifically, the swing idle stroke surface 8 and the swing working surface 7 are both arc surfaces, the swing working surface 7 protrudes inward, and the swing idle stroke surface 8 is recessed outward (when the presser foot lifting working surface 2a works, the swing idle stroke surface 8 is concentrically arranged with the rotation center of the cam 2, or the circumference of the guide head 6 around the rotation center of the cam 2 is located inside the swing idle stroke surface 8). The number of the swing working faces 7 and the number of the swing idle stroke faces 8 are two, a yield concave face 9 is connected between one ends of the two swing working faces 7, and the other ends of the two swing working faces 7 are connected with one ends of the corresponding swing idle stroke faces 8.
As shown in fig. 8, when the guide head 6 is located at the receding concave surface 9, the rotating shaft of the motor 1 drives the cam 2 to rotate until the guide head 6 comes into contact with the swinging working surface 7, and the guide head 6 exerts a force on the first swinging arm 13. With the subsequent rotation of the motor 1, the cam 2 drives the whole transmission piece 4 to swing through the guide head 6, and the second swing arm 14 drives the swing seat 12 to swing through the connecting rod 5 along with the swing of the transmission piece 4, so as to perform the needle pitch adjustment work. As shown in fig. 9, when the guide head 6 is located on the swing idle stroke surface 8, the guide head 6 does not apply any force to the first swing arm 13, and the driving member 4 does not swing any more, so that the swing base 12 is kept stationary. The arrangement of the two swinging working surfaces 7 ensures that the motor 1 can drive the swinging seat 12 to swing no matter in positive rotation or reverse rotation, so that the driving device can adjust the positive needle pitch or the negative needle pitch as required, the positive sewing can be realized when the needle pitch is positive, and the reverse sewing can be realized when the needle pitch is negative. The position of the guide head 6 resting on the oscillating working surface 7 determines the value of the gauge adjusted, the gauge being adjusted to a maximum value when the cam 2 is rotated until the guide head 6 is at the junction of the oscillating working surface 7 and the oscillating idle stroke surface 8. The driving device can complete the work of lifting the presser foot and adjusting the needle pitch through a motor 1, the guide head 6 is positioned at the swinging idle stroke surface 8 when the work of lifting the presser foot is completed to ensure that the needle pitch adjusting mechanism does not work, and the presser foot lifting idle stroke surface 2b is abutted against the swing rod 3 to ensure that the presser foot lifting mechanism does not work when the work of adjusting the needle pitch is completed.
Example two
The structure and principle of this embodiment are basically the same as those of the first embodiment, except that: in this embodiment, one side of the first swing arm 13 is fixedly connected with the guide head 6, the first transmission mechanism further comprises a guide groove formed in one side of the cam 2, the guide head 6 is located in the guide groove, and when the cam 2 rotates, a groove wall of the guide groove can move relative to the guide head 6 and push the first swing arm 13 to rotate around the axis of the transmission member 4. The groove wall of the guide groove comprises a swinging working surface 7 and a swinging idle stroke surface 8 connected to one end of the swinging working surface 7, and when the cam 2 rotates, the swinging working surface 7 is matched with the guide head 6 to drive the first swinging arm 13 to rotate; when the cam 2 rotates to drive the presser foot lifting mechanism to work, the swinging idle stroke surface 8 is matched with the guide head 6 to keep the first swinging arm 13 still.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (10)
1. The driving device for lifting the presser foot and adjusting the needle pitch in the sewing machine comprises a motor (1) and a cam (2) fixed on a rotating shaft of the motor (1), and is characterized by further comprising a shaft (10), a swing rod (3) and a transmission piece (4) which are adjacently sleeved on the shaft, wherein the cam (2) drives the presser foot lifting mechanism through the swing rod (3), the transmission piece (4) is cylindrical, a first transmission mechanism is arranged between one end of the transmission piece (4) and the cam (2), and a second transmission mechanism is arranged between the other end of the transmission piece (4) and the needle pitch adjusting mechanism.
2. The driving device for presser foot lifting and stitch length adjustment in sewing machine according to claim 1, characterized in that the outer edge of said cam (2) abuts against said swing link (3), and said one end of the side of said cam (2) and said transmission member (4) near said cam (2) is provided with said first transmission mechanism.
3. The driving device for presser foot lifting and stitch length adjustment in sewing machine according to claim 2, wherein the driving mechanism comprises a first swing arm (13) integrally formed at one end of the driving member (4) or fixedly connected to one end of the driving member (4), the first swing arm (13) is located at one side of the cam (2) and is in driving connection with the cam (2).
4. The driving device for presser foot lifting and stitch length adjustment in sewing machine according to claim 3, wherein the first swing arm (13) is provided with a fitting hole (13a), the transmission mechanism further comprises a guiding head (6) fixedly connected to one side of the cam (2), the guiding head (6) is inserted into the fitting hole (13a) and the guiding head (6) can move along the hole wall of the fitting hole (13a) when the cam (2) rotates and push the first swing arm (13) to rotate around the axis of the transmission member (4).
5. The driving device for adjusting the presser foot and the needle pitch of a sewing machine according to claim 3, wherein a guide head (6) is attached to one side of the first swing arm (13), the transmission mechanism further comprises a guide groove opened on one side of the cam (2), the guide head (6) is positioned in the guide groove, and when the cam (2) rotates, the groove wall of the guide groove can move relative to the guide head (6) and push the first swing arm (13) to rotate around the axis of the transmission member (4).
6. The driving device for presser foot lifting and needle pitch adjustment in a sewing machine according to claim 2, wherein the needle pitch adjustment mechanism comprises a swinging seat (12), the swinging seat (12) is disposed adjacent to the other end of the transmission member (4), and the transmission mechanism is disposed on one side of the swinging seat (12) close to the transmission member (4).
7. The driving device for presser foot lifting and stitch length adjustment in sewing machine according to claim 6, wherein the second driving mechanism comprises a second swing arm (14) integrally formed at the other end of the driving member (4) or fixedly connected to the other end of the driving member (4), the second swing arm (14) is in driving connection with the swing base (12).
8. The driving device for presser foot lifting and stitch length adjustment in sewing machine according to claim 7, wherein the second transmission mechanism further comprises a link (5), one end of the link (5) is hinged to one side of the second swing arm (14), the other end of the link (5) is hinged to one side of the swing seat (12), or the end of the second swing arm (14) is hinged to one side of the swing seat (12).
9. The driving device for presser foot lifting and stitch length adjustment in sewing machine according to claim 2, wherein said swing link (3) comprises an annular sleeve portion (3a) and a rod body (3b) protruding from the outer peripheral surface of the sleeve portion (3a), the presser foot lifting mechanism comprises a push rod (11) capable of being lifted upward, the lower end of the push rod (11) abuts against the upper side of the rod body (3b), and the outer edge of the cam (2) abuts against the lower side of the rod body (3 b).
10. The driving device for the presser foot lifting and gauge adjustment in a sewing machine according to claim 1, wherein said shaft (10) is a feed shaft of the sewing machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022216183.4U CN212357605U (en) | 2020-09-30 | 2020-09-30 | Driving device for lifting presser foot and adjusting needle distance in sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022216183.4U CN212357605U (en) | 2020-09-30 | 2020-09-30 | Driving device for lifting presser foot and adjusting needle distance in sewing machine |
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| Publication Number | Publication Date |
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| CN212357605U true CN212357605U (en) | 2021-01-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022216183.4U Active CN212357605U (en) | 2020-09-30 | 2020-09-30 | Driving device for lifting presser foot and adjusting needle distance in sewing machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112941736A (en) * | 2021-01-29 | 2021-06-11 | 东莞市扬侨电子自动化设备有限公司 | Intelligent control sewing machine and control method thereof |
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2020
- 2020-09-30 CN CN202022216183.4U patent/CN212357605U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112941736A (en) * | 2021-01-29 | 2021-06-11 | 东莞市扬侨电子自动化设备有限公司 | Intelligent control sewing machine and control method thereof |
| CN112941736B (en) * | 2021-01-29 | 2022-03-18 | 东莞市扬侨电子自动化设备有限公司 | Intelligent control sewing machine and control method thereof |
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