CN219239945U - Presser foot lifting mechanism for sewing machine - Google Patents
Presser foot lifting mechanism for sewing machine Download PDFInfo
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- CN219239945U CN219239945U CN202320839251.3U CN202320839251U CN219239945U CN 219239945 U CN219239945 U CN 219239945U CN 202320839251 U CN202320839251 U CN 202320839251U CN 219239945 U CN219239945 U CN 219239945U
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Abstract
The utility model discloses a presser foot lifting mechanism for a sewing machine, which comprises a driving motor, wherein the driving motor is fixed on the outer side of a sewing machine body, a driving shaft of the driving motor is fixedly connected with a connecting piece, the connecting piece is fixedly connected with one end of a second connecting rod, the other end of the second connecting rod is rotatably connected with one end of a first connecting rod, the other end of the first connecting rod is rotatably connected with a connecting seat, the connecting seat is fixedly connected with one end of a pull rod, the pull rod is slidably arranged in a shaft sleeve in a penetrating manner, the shaft sleeve is fixed in the sewing machine body, and the other end of the pull rod is fixedly connected with a presser foot for installing a needle. The mechanism of the utility model installs the driving motor at a position close to the needle, simplifies the structure, simplifies the size of parts, reduces the transmission route of the motor, runs stably and effectively reduces the vibration of the machine head in the reciprocating operation process.
Description
Technical Field
The utility model relates to a presser foot lifting mechanism for a sewing machine, and belongs to the technical field of sewing equipment.
Background
In the sewing process of the bag pasting machine and the pattern sewing machine, the presser foot moves along with the random needle, so that the presser foot can restrict the sewing material to a certain extent, the needle can pass smoothly, and the sewn stitch is more attractive. The motor in the existing presser foot lifting mechanism adopts a built-in type (for example, patent number ZL 200510137008.3), so that the transmission route of the motor is longer, the related parts are larger in size, and the machine head vibrates more obviously in the reciprocating operation process.
Disclosure of Invention
The utility model aims to solve the technical problems that: how to shorten the transmission route of the motor, simplify the structure, reduce the size of parts and relieve the vibration of the machine head in the reciprocating operation process.
In order to solve the technical problems, the technical scheme of the utility model provides a presser foot lifting mechanism for a sewing machine, which is characterized by comprising a driving motor, wherein the driving motor is fixed on the outer side of a sewing machine body, a driving shaft of the driving motor is fixedly connected with a connecting piece, the connecting piece is fixedly connected with one end of a second connecting rod, the other end of the second connecting rod is rotatably connected with one end of a first connecting rod, the other end of the first connecting rod is rotatably connected with a connecting seat, the connecting seat is fixedly connected with one end of a pull rod, the pull rod is slidably arranged in a shaft sleeve in a penetrating manner, the shaft sleeve is fixed in the sewing machine body, and the other end of the pull rod is fixedly connected with a presser foot for installing a needle; when the driving shaft of the driving motor rotates forward and backward, the connecting piece is driven to rotate around the central shaft of the driving shaft by a corresponding angle, so that the first connecting rod drives the connecting seat to reciprocate close to or far away from the shaft sleeve, and the connecting seat is driven to reciprocate with the presser foot through the pull rod.
Preferably, the second connecting rod is perpendicular to the driving shaft of the driving motor.
Preferably, the connecting piece include the connecting piece body, the center of connecting piece body is equipped with the first hole that can supply driving motor's drive shaft to pass, the one end of connecting piece body is equipped with two at least second holes that are used for passing through bolt-up connection with the second connecting rod, the connecting piece body other end is C style of calligraphy structure, one side of C style of calligraphy structure is equipped with the clearance, the upper end and the connecting piece body separation of C style of calligraphy structure, the both ends that lie in the clearance position on the C style of calligraphy structure are equipped with third hole and fourth hole respectively, link together through bolt-up between third hole and the fourth hole for C style of calligraphy structure presss from both sides driving motor's drive shaft.
Preferably, the second connecting rod comprises a second connecting rod body, one end of the second connecting rod body is provided with at least two seventh holes, the seventh holes are connected with the second holes on the connecting piece through bolt fastening, the side surface of the other end of the second connecting rod body is provided with fifth holes, the fifth holes are rotatably connected with the first connecting rod through rotating shafts or pin shafts, the other end of the second connecting rod body is provided with sixth holes, the number of the sixth holes is the same as that of the fifth holes, and each sixth hole is communicated with one fifth hole; when the rotating shaft or the pin shaft enters the fifth hole, a bolt is connected in the corresponding sixth hole through threads, and the rotating shaft or the pin shaft is tightly propped by the bolt.
Preferably, the first connecting rod comprises a first connecting rod body, the two ends of the first connecting rod body are respectively provided with an eighth hole and a ninth hole, the eighth hole is rotationally connected with the fifth hole through a rotating shaft or a pin shaft, and the eighth hole can rotate around the rotating shaft or the pin shaft connected with the eighth hole; the ninth hole is connected with the connecting seat through a rotating shaft or a pin shaft in a rotating way, and the ninth hole can rotate around the rotating shaft or the pin shaft connected with the ninth hole.
Preferably, the middle of the first connecting rod body is provided with at least one through hole capable of reducing the weight of the first connecting rod body.
Preferably, the connecting seat comprises a first connecting seat split and a second connecting seat split, a first bulge is arranged at one end of the first connecting seat split, a tenth hole through which a pull rod can pass is formed at the other end of the first connecting seat split, a twelfth hole and at least two eleventh holes are formed in the side face of the other end of the first connecting seat split, and the twelfth hole is communicated with the tenth hole; a second bulge is arranged at one end of the second split body of the connecting seat, a thirteenth hole is formed in the second bulge, the thirteenth hole is rotationally connected with a ninth hole through a rotating shaft or a pin shaft, a fifteenth hole and at least two fortieth holes are formed in the side surface of the second split body of the connecting seat, the fifteenth hole corresponds to the twelfth hole, the fortieth hole corresponds to the eleventh hole one by one, bolts are connected in the twelfth hole through threads, and one end of each bolt sequentially penetrates through the fifteenth hole and the twelfth hole and then the pull rod is fastened in the tenth hole; the first split of the connecting seat and the second split of the connecting seat are fixedly connected with the eleventh hole through another bolt passing through the tenth hole.
Preferably, the second split of the connecting seat is a right-angle bending structure, the second bulge is arranged on the upper folded edge of the right-angle bending structure, the fifteenth hole and the fourteenth hole are arranged on the side folded edge of the right-angle bending structure, and the bottom surface of the upper folded edge of the right-angle bending structure is pressed on the upper surface of the first split of the connecting seat.
Preferably, the presser foot comprises a presser foot body, one end of the presser foot body is provided with a limiting opening groove, the limiting opening groove is matched with the other end of the pull rod, one side of the limiting opening groove is provided with a sliding groove, the presser foot body is connected with the other end of the pull rod through bolt fastening, the other end of the presser foot body is provided with a needle hole head, and a needle hole for a needle to pass through is arranged in the needle hole head.
Preferably, the sliding groove is of a long hole structure, and the height of the presser foot relative to the pull rod can be manually adjusted after the bolt is loosened.
The beneficial effects of the utility model are as follows:
the mechanism of the utility model installs the driving motor at a position close to the needle, simplifies the structure, simplifies the size of parts, reduces the transmission route of the motor, runs stably and effectively reduces the vibration of the machine head in the reciprocating operation process.
Drawings
FIG. 1 is a schematic view of a presser foot lifting mechanism for a sewing machine;
FIG. 2 is a schematic view of a connector;
FIG. 3 is a schematic illustration of a second link;
FIG. 4 is a schematic view of a first link;
FIG. 5 is a schematic view of the connection base;
FIG. 6 is a schematic view of the whole connecting seat (I);
FIG. 7 is a schematic diagram of the whole connecting seat (II);
fig. 8 is a schematic view of a presser foot.
Detailed Description
In order to make the utility model more comprehensible, preferred embodiments accompanied with figures are described in detail below.
The utility model provides a presser foot lifting mechanism for a sewing machine, which is shown in fig. 1, and comprises a driving motor 1, wherein the driving motor 1 is fixed on the outer side of a sewing machine body, in particular to the rear side of a sewing machine head. The driving shaft (motor shaft) of driving motor 1 passes through bolt and connecting piece 2 fastening connection, connecting piece 2 passes through bolt fastening connection with the one end of second connecting rod 8, second connecting rod 8 sets up with driving motor 1's drive shaft mutually perpendicular, the second connecting rod 8 other end is rotatable with first connecting rod 7 one end through pivot or round pin axle, the first connecting rod 7 other end is rotatable with connecting seat 6 through pivot or round pin axle connection, connecting seat 6 presss from both sides the one end (top) of pull rod 4, pull rod 4 slidable wears to locate in axle sleeve 5, axle sleeve 5 is fixed in sewing machine's organism, axle sleeve 5 is used for reducing the wearing and tearing of pull rod 4 and resistance and restriction pull rod 4's direction of motion, the other end (bottom) fastening connection of pull rod 4 has presser foot 3, can the needle on the presser foot 3. When the driving shaft of the driving motor 1 rotates forward and backward, the connecting piece 2 is driven to rotate around the central shaft of the driving shaft by a corresponding angle, so that the first connecting rod 7 drives the connecting seat 6 to reciprocate close to or far away from the shaft sleeve 5, and the connecting seat is connected with the presser foot 3 through the pull rod 4 to reciprocate. I.e. the circular movement of the motor shaft (not always clockwise or counter-clockwise but according to a set rotation angle) is converted into a linear movement of the pull rod 4.
As shown in fig. 2, the connecting member 2 includes a connecting member body 23, a first hole 21 is provided at the center of the connecting member body 23 for passing through a driving shaft of the driving motor 1, at least two second holes 22 are provided at one end of the connecting member body 23 for fastening connection with the second connecting rod 8 by bolts, the second holes 22 are not communicated with the first holes 21, the other end of the connecting member body 23 is in a C-shaped structure, i.e., a gap 25 is provided at one side thereof, and the upper end of the C-shaped structure is separated from the connecting member body 23, so that the C-shaped structure can be pressed at the gap 25, and a third hole 24 and a fourth hole 26 are provided at two ends of the C-shaped structure at the gap 25, respectively, and the third hole 24 and the fourth hole 26 are fastened together by a bolt, thereby the C-shaped structure clamps the driving shaft of the driving motor 1.
As shown in fig. 3, the second connecting rod 8 includes a second connecting rod body 83, one end of the second connecting rod body 83 is provided with at least two seventh holes 84, the seventh holes 84 are connected with the second holes 22 on the connecting piece 2 through bolt fastening, the side surface of the other end of the second connecting rod body 83 is provided with a fifth hole 81, the fifth hole 81 is rotatably connected with the first connecting rod 7 through a rotating shaft or a pin shaft, the other end of the second connecting rod body 83 is provided with sixth holes 82, the number of the sixth holes 82 is the same as that of the fifth holes 81, each sixth hole 82 is communicated with one fifth hole 81, after the rotating shaft or the pin shaft enters the fifth holes 81, a bolt is connected in the corresponding sixth hole 82 through threads, and the rotating shaft or the pin shaft is tightly pressed through the bolt.
As shown in fig. 4, the first link 7 includes a first link body 72, and an eighth hole 71 and a ninth hole 73 are respectively provided at both ends of the first link body 72, the eighth hole 71 is rotatably connected to the fifth hole 81 through a rotation shaft or a pin, and the eighth hole 71 can be rotated around the rotation shaft or the pin connected thereto; the ninth hole 73 is rotatably connected to the connection base 6 through a rotation shaft or a pin, and the ninth hole 73 can be rotated around the rotation shaft or the pin connected thereto. The first link body 72 is provided at the middle thereof with at least one through hole for reducing the weight thereof.
As shown in fig. 5 to 7, the connecting seat 6 comprises a first connecting seat split 61 and a second connecting seat split 62, a first protrusion 611 is arranged at one end of the first connecting seat split 61, a tenth hole 612 is arranged at the other end of the first connecting seat split 61, a pull rod 4 can pass through the tenth hole 614 and at least two eleventh holes 613 are arranged at the side surface of the other end of the first connecting seat split 61, and the twelfth hole 614 is communicated with the tenth hole 612; the second protrusion 622 is arranged at one end of the second connecting seat sub-body 62, the thirteenth hole 621 is arranged on the second protrusion 622, the thirteenth hole 621 is connected with the ninth hole 73 through rotation of a rotating shaft or a pin shaft, the fifteenth hole 624 and at least two forty holes 623 are arranged on the side face of the second connecting seat sub-body 62, the fifteenth hole 624 corresponds to the twelfth hole 614 in position, the forty holes 623 correspond to the eleventh holes 613 one by one, the second connecting seat sub-body 62 is of a right-angle bending structure, the second protrusion 622 is arranged on the upper folded edge of the right-angle bending structure, the fifteenth hole 624 and the fourteenth hole 623 are arranged on the side folded edge of the right-angle bending structure, the bottom face of the upper folded edge of the right-angle bending structure is pressed on the upper surface of the first connecting seat sub-body 61, one bolt passes through the fifteenth hole 624 and then is connected with the twelfth hole 614 through threads, so that the pull rod 4 is fastened in the tenth hole 612 in a top mode, and the first connecting seat sub-body 61 and the second connecting seat sub-body 62 pass through the forty holes 623 through the bolts.
As shown in fig. 8, the presser foot 3 includes a presser foot body 31, one end of the presser foot body 31 is provided with a limit open slot 33, the limit open slot 33 is matched with the other end of the pull rod 4, one side of the limit open slot 33 is provided with a slide slot 32, one end of a bolt passes through the slide slot 32 and then is in threaded connection with the other end of the pull rod 4, or one end of the bolt passes through the slide slot 32 and the other end of the pull rod 4 once and then is in fastening connection with the presser foot body 31 through a nut, the slide slot 32 is of a long hole structure, the height of the presser foot 3 can be manually adjusted after the bolt is unscrewed, and the other end 34 of the presser foot body 31 is provided with a pinhole head 34. The pinhole head 34 has a pinhole therein through which a needle passes.
In the present embodiment, the driving motor 1 is a stepping motor. The pull rod 4 is of a hollow structure, and motion inertia is reduced through light weight design. The second connecting rod 8, the first connecting rod 7 and the connecting seat 6 are provided with a plurality of through holes without connection function so as to reduce the weight of parts.
Wherein the first hole 21, the third hole 24, the fifth hole 81, the seventh hole 84, the eighth hole 71, the tenth hole 612, the tenth hole 623, and the fifteenth hole 624 are through holes; the sixth hole 82 and the twelfth hole 614 are bolt holes; the second hole 22, the fourth hole 26, the ninth hole 73, the eleventh hole 613, and the thirteenth hole 621 may each be a through hole or a bolt hole.
Claims (10)
1. The presser foot lifting mechanism for the sewing machine is characterized by comprising a driving motor (1), wherein the driving motor (1) is fixed on the outer side of a sewing machine body, a driving shaft of the driving motor (1) is fixedly connected with a connecting piece (2), the connecting piece (2) is fixedly connected with one end of a second connecting rod (8), the other end of the second connecting rod (8) is rotatably connected with one end of a first connecting rod (7), the other end of the first connecting rod (7) is rotatably connected with a connecting seat (6), the connecting seat (6) is fixedly connected with one end of a pull rod (4), the pull rod (4) is slidably arranged in a shaft sleeve (5), the shaft sleeve (5) is fixed in the sewing machine body, and the other end of the pull rod (4) is fixedly connected with a presser foot (3) for a needle mounting machine; when the driving shaft of the driving motor (1) rotates forward and backward, the connecting piece (2) is driven to rotate around the central shaft of the driving shaft by a corresponding angle, so that the first connecting rod (7) drives the connecting seat (6) to reciprocate close to or far away from the shaft sleeve (5), and the connecting seat (6) reciprocates together with the presser foot (3) through the pull rod (4).
2. A presser foot lifting mechanism for a sewing machine according to claim 1, characterized in that the second link (8) is arranged perpendicular to the drive shaft of the drive motor (1).
3. The presser foot lifting mechanism for the sewing machine according to claim 1, characterized in that the connecting piece (2) comprises a connecting piece body (23), a first hole (21) through which a driving shaft of the driving motor (1) can pass is formed in the center of the connecting piece body (23), at least two second holes (22) used for being connected with the second connecting rod (8) through bolt fastening are formed in one end of the connecting piece body (23), a C-shaped structure is formed in the other end of the connecting piece body (23), a gap (25) is formed in one side of the C-shaped structure, the upper end of the C-shaped structure is separated from the connecting piece body (23), a third hole (24) and a fourth hole (26) are formed in two ends, located at the position of the gap (25), of the C-shaped structure, and the third hole (24) and the fourth hole (26) are connected together through bolt fastening, so that the C-shaped structure clamps the driving shaft of the driving motor (1).
4. A presser foot lifting mechanism for a sewing machine according to claim 3, characterized in that the second connecting rod (8) comprises a second connecting rod body (83), one end of the second connecting rod body (83) is provided with at least two seventh holes (84), the seventh holes (84) are connected with the second holes (22) on the connecting piece (2) through bolt fastening, the side surface of the other end of the second connecting rod body (83) is provided with a fifth hole (81), the fifth hole (81) is rotatably connected with the first connecting rod (7) through a rotating shaft or a pin shaft, the other end of the second connecting rod body (83) is provided with sixth holes (82), the number of the sixth holes (82) and the number of the fifth holes (81) are the same, and each sixth hole (82) is communicated with one fifth hole (81); after the rotating shaft or the pin shaft enters the fifth hole (81), a bolt is connected in the corresponding sixth hole (82) through threads, and the rotating shaft or the pin shaft is tightly propped by the bolt.
5. The presser foot lifting mechanism for sewing machine according to claim 4, wherein the first link (7) comprises a first link body (72), the eighth hole (71) and the ninth hole (73) are respectively provided at both ends of the first link body (72), the eighth hole (71) is rotatably connected with the fifth hole (81) through a rotating shaft or a pin shaft, and the eighth hole (71) can rotate around the rotating shaft or the pin shaft connected with the eighth hole; the ninth hole (73) is connected with the connecting seat (6) through a rotating shaft or a pin shaft in a rotating way, and the ninth hole (73) can rotate around the rotating shaft or the pin shaft connected with the ninth hole.
6. The presser foot lifting mechanism for sewing machines as claimed in claim 5, characterized in that said first link body (72) is provided with at least one through hole in the middle thereof for reducing the weight thereof.
7. The presser foot lifting mechanism for sewing machine according to claim 5, wherein the connecting seat (6) comprises a first connecting seat split (61) and a second connecting seat split (62), a first protrusion (611) is arranged at one end of the first connecting seat split (61), a tenth hole (612) through which the pull rod (4) can pass is arranged at the other end of the first connecting seat split (61), a twelfth hole (614) and at least two eleventh holes (613) are arranged at the side surface of the other end of the first connecting seat split (61), and the twelfth hole (614) is communicated with the tenth hole (612); a second bulge (622) is arranged at one end of the second split body (62) of the connecting seat, a thirteenth hole (621) is arranged on the second bulge (622), the thirteenth hole (621) is rotationally connected with a ninth hole (73) through a rotating shaft or a pin shaft, a fifteenth hole (624) and at least two fortieth holes (623) are arranged on the side surface of the second split body (62) of the connecting seat, the position of the fifteenth hole (624) corresponds to the position of the twelfth hole (614), the position of the fortieth hole (623) corresponds to the position of the eleventh hole (613) one by one, bolts are connected in the twelfth hole (614) through threads, and one end of each bolt sequentially passes through the fifteenth hole (624) and the twelfth hole (614) to fix the pull rod (4) in the tenth hole (612) in a jacking mode; the first connecting seat split (61) and the second connecting seat split (62) are fixedly connected with the eleventh hole (613) through the tenth hole (623) by another bolt.
8. The presser foot lifting mechanism for sewing machine of claim 7, characterized in that the second sub-body (62) of the connecting seat is a right angle bending structure, the second protrusion (622) is provided on an upper folded edge of the right angle bending structure, the fifteenth hole (624) and the fourteenth hole (623) are provided on side folded edges of the right angle bending structure, and a bottom surface of the upper folded edge of the right angle bending structure is pressed on an upper surface of the first sub-body (61) of the connecting seat.
9. The presser foot lifting mechanism for the sewing machine according to claim 1, wherein the presser foot (3) comprises a presser foot body (31), one end of the presser foot body (31) is provided with a limiting opening groove (33), the limiting opening groove (33) is matched with the other end of the pull rod (4), one side of the limiting opening groove (33) is provided with a sliding groove (32), the presser foot body (31) is connected with the other end of the pull rod (4) through bolt fastening, the other end of the presser foot body (31) is provided with a pinhole head (34), and a pinhole for a needle to pass through is arranged in the pinhole head (34).
10. The presser foot lifting mechanism for sewing machine according to claim 9, wherein the sliding groove (32) has a long hole-shaped structure, and the height of the presser foot (3) relative to the pull rod (4) can be manually adjusted after the sliding groove is unscrewed by a bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320839251.3U CN219239945U (en) | 2023-04-14 | 2023-04-14 | Presser foot lifting mechanism for sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320839251.3U CN219239945U (en) | 2023-04-14 | 2023-04-14 | Presser foot lifting mechanism for sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219239945U true CN219239945U (en) | 2023-06-23 |
Family
ID=86850001
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320839251.3U Active CN219239945U (en) | 2023-04-14 | 2023-04-14 | Presser foot lifting mechanism for sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219239945U (en) |
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2023
- 2023-04-14 CN CN202320839251.3U patent/CN219239945U/en active Active
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