CN215887474U - Sewing machine head and sewing machine with same - Google Patents
Sewing machine head and sewing machine with same Download PDFInfo
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- CN215887474U CN215887474U CN202122467646.9U CN202122467646U CN215887474U CN 215887474 U CN215887474 U CN 215887474U CN 202122467646 U CN202122467646 U CN 202122467646U CN 215887474 U CN215887474 U CN 215887474U
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Abstract
The utility model discloses a sewing machine head and a sewing machine with the same, comprising: a needle rod, the bottom of which is provided with a machine needle; the bottom of the middle presser foot rod is provided with a middle presser foot; the needle rod and the middle presser foot rod can synchronously swing in a reciprocating mode, and the swinging directions of the needle rod and the middle presser foot rod are the same, so that when the machine needle is used for needling cloth, the swinging of the machine needle and the middle presser foot can adapt to the movement of the cloth. The needle rod and the middle presser foot rod can synchronously swing in a reciprocating way, when the sewing machine using the sewing machine head works and a piece of cloth is needled, the needle and the middle presser foot can swing along with the movement of the cloth, so that the swinging of the needle and the middle presser foot is adapted to the movement of the cloth, and the phenomenon that the cloth is provided with a bent needle to cause needle breakage or thread breakage is avoided; in addition, the cloth does not need to be static, the continuous motion of the cloth can be met, the problems of sudden start and sudden stop of a feeding mechanism of a sewing machine, impact, abrasion, noise and the like are avoided, and the problem that the needle pitch is inconsistent due to inaccurate control when the feeding mechanism is suddenly started and suddenly stopped in the prior art can be solved.
Description
Technical Field
The utility model relates to the technical field of sewing equipment, in particular to a sewing machine head. In addition, the utility model also relates to a sewing machine comprising the sewing machine head.
Background
In the prior art, in the process of sewing cloth by using a sewing machine, after a machine needle pierces the cloth, in order to avoid the problems of needle breakage or thread breakage and the like caused by the bending of the machine needle by a fabric belt, the cloth is static, that is, when the machine needle pierces the cloth, a feeding mechanism stops moving, so that the cloth is static; when the needle leaves the cloth, the feeding mechanism starts to move so as to realize the movement of the cloth. Therefore, the existing sewing machine is intermittently fed, and the feeding mechanism of the sewing machine has the phenomenon of sudden start and sudden stop.
However, the speed of the existing electric sewing machine is generally very high, so that the frequency of sudden start and sudden stop of a feeding mechanism is very high, and the problems of impact, abrasion, noise generation and the like of parts are easily caused; in addition, especially for large sewing machines such as a template machine, a quilting machine, a pattern machine and the like, because the feeding mechanism has a large structure volume and heavy weight, the quick start and the quick stop are difficult to be accurately controlled, and the phenomenon of unequal needle pitches is easy to occur under the working conditions such as quick turning and the like.
Therefore, how to avoid the sudden start and stop of the feeding mechanism of the sewing machine is a problem to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention provides a sewing machine head, which can continuously move the cloth during the cloth-needling process, thereby avoiding the sudden start and stop of the feeding mechanism of the sewing machine.
Another object of the present invention is to provide a sewing machine including the sewing machine head, wherein the feeding mechanism can move continuously, thereby avoiding the sudden start and stop.
In order to achieve the above purpose, the utility model provides the following technical scheme:
a sewing machine head comprising:
a needle rod, the bottom of which is provided with a machine needle;
the bottom of the middle presser foot rod is provided with a middle presser foot;
the needle rod and the middle presser foot rod can synchronously swing in a reciprocating mode, and the swinging directions of the needle rod and the middle presser foot rod are the same, so that when the machine needle pierces cloth, the swinging of the machine needle and the middle presser foot can adapt to the movement of the cloth.
Preferably, the needle bar can be arranged on a needle bar frame in a reciprocating manner along the vertical direction, and the needle bar frame is connected with a swing mechanism for driving the needle bar frame to swing.
Preferably, the swing mechanism includes:
a needle swinging motor for outputting a rotational motion;
and the first transmission mechanism is connected between the needle swinging motor and the needle bar frame and is used for converting the rotary motion of the needle swinging motor into the swinging of the needle bar frame.
Preferably, the first transmission mechanism includes:
the needle swinging crank is connected with an output shaft of the needle swinging motor;
the needle swinging connecting rod is connected with the needle swinging crank;
the needle swinging rocker is connected with the needle swinging connecting rod;
and the needle swinging shaft is connected with the needle swinging rocker and is fixedly arranged on the needle bar frame.
Preferably, the middle presser bar is arranged on the needle bar frame and can reciprocate along the vertical direction.
Preferably, the needle bar is connected with a spindle motor through a second transmission mechanism, and the second transmission mechanism is used for converting the rotary motion of the spindle motor into the reciprocating motion of the needle bar along the vertical direction.
Preferably, the second transmission mechanism includes:
the synchronous belt transmission component is connected with the spindle motor;
the main shaft is connected with a secondary synchronous belt wheel of the synchronous belt transmission assembly;
a needle bar crank connected with the main shaft;
and the needle rod connecting rod is connected with the needle rod through a needle rod joint.
Preferably, the middle presser bar is connected with the main shaft through a third transmission mechanism, and the third transmission mechanism is used for converting the rotation of the main shaft into the reciprocating motion of the middle presser bar along the vertical direction.
Preferably, the third transmission mechanism includes:
the middle presser foot eccentric wheel is connected with the main shaft;
the middle presser foot large connecting rod is connected with the middle presser foot eccentric wheel;
the middle presser foot rocker is connected with the middle presser foot large connecting rod;
the front crank is connected with the middle presser foot rocker;
a first front link connected to the front crank;
the front rocker is connected with the first front connecting rod;
and the second front connecting rod is connected with the middle presser foot rod.
A sewing machine comprises any one of the sewing machine heads.
According to the sewing machine head provided by the utility model, the needle rod and the middle presser foot rod can synchronously swing in a reciprocating manner, so that when a sewing machine applying the sewing machine head works, the needle and the middle presser foot can swing along with the movement of cloth in the process of needling the cloth by the sewing machine, and the swinging of the needle and the middle presser foot can adapt to the movement of the cloth, so that the problems of needle breakage, thread breakage and the like caused by the fact that the needle is bent when the cloth moves can be avoided; on the other hand, the cloth does not need to be static, and the continuous motion of the cloth can be met, so that the problems of sudden start and stop of a feeding mechanism of the sewing machine, impact, abrasion, noise generation and the like of parts can be avoided, and the problems of inconsistent needle pitch and the like caused by inaccurate control during the sudden start and stop of the feeding mechanism in the prior art can be solved.
That is, the sewing machine head provided by the utility model can ensure that the cloth can continuously move in the cloth needling process, thereby avoiding the sudden start and the sudden stop of a feeding mechanism of the sewing machine.
The sewing machine provided by the utility model comprises the sewing machine head and has the beneficial effects, so that the feeding mechanism of the sewing machine can continuously move, and the phenomenon that the feeding mechanism is suddenly started and stopped is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic view of a first view of a head of a sewing machine according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of the structure of FIG. 1 from a second perspective;
fig. 3 is a schematic structural diagram of a third viewing angle of fig. 1.
The reference numerals in fig. 1 to 3 are as follows:
the needle bar is 1, the needle is 11, the middle presser bar is 2, the middle presser bar is 21, the needle bar frame is 3, the needle swinging motor is 41, the needle swinging crank is 42, the needle swinging connecting rod is 43, the needle swinging rocker is 44, the needle swinging shaft is 45, the main shaft motor is 51, the main synchronous belt wheel is 52, the synchronous belt is 53, the slave synchronous belt wheel is 54, the main shaft is 55, the hand wheel is 551, the needle bar crank is 56, the needle bar connecting rod is 57, the needle bar joint is 58, the middle presser eccentric wheel is 61, the middle presser big connecting rod is 62, the middle rocker is 63, the front crank is 64, the presser foot is the first front connecting rod, the front rocker is 66, and the second front connecting rod is 67.
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.
The core of the utility model is to provide a sewing machine head which can ensure that cloth can continuously move in the process of cloth needling, thereby avoiding the sudden start and the sudden stop of a feeding mechanism of the sewing machine. Another core of the utility model is to provide a sewing machine comprising the sewing machine head, wherein the feeding mechanism can continuously move, thereby avoiding the phenomenon of sudden start and sudden stop.
Referring to fig. 1-3, fig. 1 is a schematic structural view of a first viewing angle of a head of a sewing machine according to an embodiment of the present invention; FIG. 2 is a schematic diagram of the structure of FIG. 1 from a second perspective; fig. 3 is a schematic structural diagram of a third viewing angle of fig. 1.
The utility model provides a sewing machine head, which comprises a needle bar 1 and a middle presser bar 2, wherein the bottom of the needle bar 1 is provided with a needle 11, the bottom of the middle presser bar 2 is provided with a middle presser 21, the needle bar 1 and the middle presser bar 2 can synchronously swing in a reciprocating way, and the swinging directions of the needle bar 1 and the middle presser bar 2 are the same, so that when the needle 11 pierces cloth, the swinging of the needle 11 and the middle presser bar 21 can adapt to the movement of the cloth.
Because the needle bar 1 and the middle presser foot bar 2 can synchronously swing in a reciprocating way, when a sewing machine applying the sewing machine head works, the needle 11 and the middle presser foot 21 can swing along with the movement of the cloth in the process that the needle 11 pierces the cloth, so that the swinging of the needle 11 and the middle presser foot 21 can adapt to the movement of the cloth, and therefore, the problems of needle breakage, thread breakage and the like caused by the curved needle 11 when the cloth moves can be avoided; on the other hand, the cloth does not need to be static, and the continuous motion of the cloth can be met, so that the problems of sudden start and stop of a feeding mechanism of the sewing machine, impact, abrasion, noise generation and the like of parts can be avoided, and the problems of inconsistent needle pitch and the like caused by inaccurate control during the sudden start and stop of the feeding mechanism in the prior art can be solved.
That is, the sewing machine head provided by the utility model can ensure that the cloth can continuously move in the cloth needling process, thereby avoiding the sudden start and the sudden stop of a feeding mechanism of the sewing machine.
It can be understood that the swing speed of the needle 11 and the middle presser foot 21 needs to be matched with the moving speed of the cloth, and meanwhile, the swing angle and the swing speed of the needle 11 and the middle presser foot 21 need to be reasonably designed according to the size of the needle pitch. It should be noted that the present invention does not limit the specific control method for the swinging of the needle 11 and the middle presser foot 21, and those skilled in the art can design the swinging of the needle 11 and the middle presser foot 21 according to the geometric relationship of the specific structure and the relationship requirement between the swinging of the needle 11 and the middle presser foot 21 and the cloth movement and the actual movement condition of the cloth. The utility model is mainly characterized in that a specific implementation structure for realizing the swinging of the needle bar 1 and the middle presser foot bar 2 is realized.
It should be noted that, the present embodiment does not limit the specific implementation manner of the needle bar 1 being able to swing, and as a preferable solution, on the basis of the above embodiments, the needle bar 1 is disposed on the needle bar frame 3 and is able to reciprocate along the vertical direction, and the needle bar frame 3 is connected to a swing mechanism for driving the needle bar frame to swing.
It can be understood that the needle bar frame 3 has a guiding function to the needle bar 1 along the vertical direction, so that the needle bar 1 can reciprocate up and down to realize the cloth pricking and lifting of the needle 11; meanwhile, the needle bar frame 3 has a limiting effect on the needle bar 1 except the vertical direction, so that the needle bar 1 can only move up and down relative to the needle bar frame 3, and can synchronously move in other directions, therefore, the needle bar frame 3 can be driven to swing through the swing mechanism, and the needle bar frame 3 drives the needle bar 1 to swing together.
In the present embodiment, the specific structure of the swing mechanism is not limited as long as it can drive the needle bar frame 3 to swing.
As a preferable mode, on the basis of the above embodiment, the swing mechanism includes the needle swing motor 41 and a first transmission mechanism, the needle swing motor 41 is used for outputting a rotational motion, and the first transmission mechanism is connected between the needle swing motor 41 and the needle bar frame 3 so as to convert the rotational motion of the needle swing motor 41 into the swing motion of the needle bar frame 3 through the first transmission mechanism. That is, in the present embodiment, the needle bar frame 3 swings in a manner of matching the needle swing motor 41 and the first transmission mechanism, and the needle swing motor 41 is used as a power source for swinging the needle bar frame 3, so that the structure is simple, the implementation is convenient, and the control is convenient.
It should be noted that the present embodiment does not limit the specific structure of the first transmission mechanism as long as it can convert the rotational motion of the needle swing motor 41 into the swing motion of the needle bar frame 3.
For example, as shown in fig. 1, based on the above embodiment, the first transmission mechanism includes a needle swing crank 42, a needle swing connecting rod 43, a needle swing rocker 44 and a needle swing shaft 45, the needle swing crank 42 is connected to an output shaft of the needle swing motor 41, the needle swing connecting rod 43 is connected to the needle swing crank 42, the needle swing rocker 44 is connected to one end of the needle swing connecting rod 43 away from the needle swing crank 42, the needle swing shaft 45 is connected to one end of the needle swing rocker 44 away from the needle swing connecting rod 43, and the needle swing shaft 45 is fixed to the needle bar frame 3.
That is, the needle swing crank 42, the needle swing link 43, the needle swing rocker 44, and the needle swing shaft 45 form a crank link mechanism, when the output shaft of the needle swing motor 41 rotates, the needle swing crank 42 is driven to rotate, when the needle swing crank 42 rotates, the needle swing link 43 is driven to swing, the needle swing link 43 drives the needle swing rocker 44 to swing, and the needle swing rocker 44 drives the needle bar frame 3 to swing through the needle swing shaft 45.
It can be seen that the present embodiment preferably transmits the motion of the needle swinging motor 41 through the rod set, but other transmission manners may be adopted, for example, the first transmission mechanism may also be a gear transmission mechanism or a synchronous belt transmission mechanism.
In addition, the embodiment is not limited to the specific implementation manner of the swinging of the middle presser bar 2, for example, the middle presser bar 2 may swing in the same manner as the above-mentioned swinging manner of the needle bar 1, that is, the middle presser bar 2 is driven to swing by another set of swing mechanism.
In view of the simplicity of the structure, and at the same time, in order to save power and cost, on the basis of the above-described embodiment, the middle presser bar 2 is provided to the needle bar frame 3 so as to be vertically reciprocated. That is, in this embodiment, the needle bar frame 3 not only has a guiding function in the vertical direction for the needle bar 1, but also has a guiding function in the vertical direction for the middle presser bar 2, so that the middle presser bar 2 can reciprocate up and down to realize the lowering and raising of the middle presser. Meanwhile, the needle bar frame 3 has a limiting effect on the middle presser foot bar 2 except for the vertical direction, so that the middle presser foot bar 2 can only move up and down relative to the needle bar frame 3, and can synchronously move in other directions, therefore, the needle bar frame 3 is driven to swing by the swing mechanism in the embodiment, and the needle bar frame 3 drives the needle bar 1 and the middle presser foot bar 2 to swing together. That is, this embodiment adopts same set of swing mechanism to drive needle bar 1 and the swing of well presser bar 2 simultaneously for the swing power supply of needle bar 1 and well presser bar 2 is the same, simple structure, and convenient control can practice thrift the cost simultaneously.
In addition, in each of the above embodiments, the specific implementation manner of the up-and-down reciprocating motion of the needle bar 1 is not limited, and as a preferable scheme, on the basis of the above embodiments, the needle bar 1 is connected with the spindle motor 51 through the second transmission mechanism, the spindle motor 51 is used for outputting the rotary motion, and the second transmission mechanism is used for converting the rotary motion of the spindle motor 51 into the reciprocating motion of the needle bar 1 in the vertical direction. That is, in the embodiment, the spindle motor 51 and the second transmission mechanism are matched for transmission to realize the up-and-down reciprocating motion of the needle bar 1, and the spindle motor 51 is used as a power source for the up-and-down reciprocating motion of the needle bar 1, so that the structure is simple, the implementation is convenient, and the control is convenient.
It should be noted that the present embodiment does not limit the specific structure of the second transmission mechanism as long as it can convert the rotation motion of the spindle motor 51 into the up-and-down reciprocating motion of the needle bar 1.
For example, as shown in fig. 2, on the basis of the above-mentioned embodiment, the second transmission mechanism includes a synchronous belt transmission assembly, a main shaft 55, a needle bar crank 56 and a needle bar connecting rod 57, wherein the synchronous belt transmission assembly includes a main synchronous pulley 52, a synchronous belt 53 and a slave synchronous pulley 54, the main synchronous pulley 52 is connected to an output shaft of the main shaft motor 51, the slave synchronous pulley 54 is connected to the main shaft 55, the needle bar crank 56 is connected to the main shaft 55, the needle bar connecting rod 57 is connected to the needle bar crank 56, one end of the needle bar connecting rod 57 away from the needle bar crank 56 is provided with a needle bar joint 58, and the needle bar joint 58 is connected to the needle bar 1.
That is, the spindle motor 51 transmits its power to the spindle 55 through the synchronous belt transmission assembly, so that the spindle 55 drives the needle bar crank 56 to rotate, the needle bar crank 56, the needle bar connecting rod 57 and the needle bar joint 58 form a crank slider mechanism, when the needle bar crank 56 rotates, the needle bar joint 58 is driven by the needle bar connecting rod 57 to slide in the vertical direction, so that the needle bar joint 58 drives the needle bar 1 to reciprocate up and down in the vertical direction.
In addition, in each of the above embodiments, the specific implementation manner of the up-and-down reciprocating motion of the middle presser bar 2 is not limited, and as a preferable solution, on the basis of the above embodiments, the middle presser bar 2 is connected to the main shaft 55 through a third transmission mechanism, and the third transmission mechanism is used for converting the rotation of the main shaft 55 into the reciprocating motion of the middle presser bar 2 in the vertical direction.
That is to say, in this embodiment, the same power source (i.e., the spindle motor 51) is used to drive the needle bar 1 and the middle presser foot bar 2 to reciprocate up and down, so that the power sources of the up-and-down reciprocating motion of the needle bar 1 and the middle presser foot bar 2 in the vertical direction are the same, the structure is simple, the control is convenient, and the cost can be saved. When the main shaft motor 51 transmits power to the main shaft 55 through the synchronous belt transmission assembly, the main shaft 55 continuously transmits the power to the middle presser bar 2 through the third transmission mechanism, so that the vertical reciprocating motion of the middle presser bar 2 is realized.
It should be noted that the third transmission mechanism is not limited in specific structure in this embodiment, as long as it can convert the rotation of the main shaft 55 into the up-and-down reciprocating motion of the middle presser bar 2.
For example, as shown in fig. 3, on the basis of the above embodiment, the third transmission mechanism includes a middle presser foot eccentric 61, a middle presser foot large connecting rod 62, a middle presser foot rocking rod 63, a front crank 64, a first front connecting rod 65, a front rocking rod 66 and a second front connecting rod 67, the middle presser foot eccentric 61 is connected with the main shaft 55, the middle presser foot large connecting rod 62 is connected with the middle presser foot eccentric 61, the middle presser foot rocking rod 63 is connected with the middle presser foot large connecting rod 62, the front crank 64 is connected with the middle presser foot rocking rod 63, the first front connecting rod 65 is connected with the front crank 64, the front rocking rod 66 is connected with the first front connecting rod 65, the second front connecting rod 67 is connected with the front rocking rod 66, and the second front connecting rod 67 is connected with the middle presser foot rod 2.
That is, the middle presser foot eccentric wheel 61, the middle presser foot large connecting rod 62, the middle presser foot rocker 63 and the front crank 64 form a crank-link mechanism for converting the rotation of the main shaft 55 into the swing of the front crank 64; the front crank 64, the first front connecting rod 65 and the front rocker 66 form a four-bar mechanism so as to drive the front rocker 66 to swing through the swing of the front crank 64; the front rocker 66, the second connecting rod and the middle presser bar 2 form a crank-slider mechanism to drive the middle presser bar 2 to reciprocate up and down through the swing of the front rocker 66.
In addition to the above-mentioned sewing machine head, the present invention also provides a sewing machine including the sewing machine head disclosed in the above-mentioned embodiments, and the structure of other parts of the sewing machine refers to the prior art, and is not described herein again.
The key point of this embodiment is that, with the sewing machine head disclosed in any of the above embodiments, because the needle bar 1 and the middle presser bar 2 of the sewing machine head can synchronously swing back and forth, the swing of the needle bar 1 is matched with the feeding motion of the sewing machine feeding mechanism, and the swing of the needle 11 can adapt to the movement of the cloth, so as to avoid the sudden start and stop of the sewing machine feeding mechanism, thereby avoiding the problems of impact, abrasion, noise and low control accuracy caused by the sudden start and stop of the feeding mechanism, and simultaneously avoiding the problems of needle breakage or thread breakage caused by the movement of the cloth with the needle bender 11.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The sewing machine head and the sewing machine with the sewing machine head provided by the utility model are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (10)
1. A sewing machine head, comprising:
a needle rod (1) with a needle (11) at the bottom;
the bottom of the middle presser foot rod (2) is provided with a middle presser foot (21);
the needle rod (1) and the middle presser foot rod (2) can synchronously swing in a reciprocating mode, and the swinging directions of the needle rod and the middle presser foot rod are the same, so that when the needle (11) pierces cloth, the swinging of the needle (11) and the middle presser foot (21) can adapt to the movement of the cloth.
2. A sewing machine head as claimed in claim 1, characterized in that said needle bar (1) is provided with a needle bar holder (3) reciprocally movable in a vertical direction, said needle bar holder (3) being connected to a swing mechanism for driving it to swing.
3. The sewing machine head as claimed in claim 2, characterized in that the oscillating mechanism comprises:
a needle swing motor (41) for outputting a rotational motion;
the first transmission mechanism is connected between the needle swinging motor (41) and the needle bar frame (3) and is used for converting the rotary motion of the needle swinging motor (41) into the swinging of the needle bar frame (3).
4. The sewing machine head as claimed in claim 3, wherein the first transmission mechanism comprises:
a needle swing crank (42) connected with an output shaft of the needle swing motor (41);
a needle swing connecting rod (43) connected with the needle swing crank (42);
a needle swing rocker (44) connected with the needle swing connecting rod (43);
the needle swinging shaft (45) is connected with the needle swinging rocker (44), and the needle swinging shaft (45) is fixedly arranged on the needle bar frame (3).
5. Sewing machine head as claimed in any of the claims 2 to 4, characterized in that said presser bar (2) is mounted on said needle bar carrier (3) so as to be vertically reciprocally movable.
6. Sewing machine head as claimed in claim 5, characterized in that said needle bar (1) is connected to a spindle motor (51) by means of a second transmission mechanism for transforming the rotary motion of said spindle motor (51) into a reciprocating motion of said needle bar (1) in a vertical direction.
7. The sewing machine head as claimed in claim 6, characterized in that the second transmission mechanism comprises:
the synchronous belt transmission assembly is connected with the spindle motor (51);
a main shaft (55) connected with a secondary synchronous pulley (54) of the synchronous belt transmission assembly;
a needle bar crank (56) connected to the spindle (55);
and the needle rod connecting rod (57) is connected with the needle rod crank (56), and the needle rod connecting rod (57) is connected with the needle rod (1) through a needle rod connector (58).
8. Sewing machine head as claimed in claim 7, characterized in that said presser bar (2) is connected to said main shaft (55) by means of a third transmission mechanism for transforming the rotation of said main shaft (55) into a reciprocating movement of said presser bar (2) in the vertical direction.
9. The sewing machine head as claimed in claim 8, characterized in that the third transmission mechanism comprises:
a middle presser eccentric wheel (61) connected with the main shaft (55);
a middle presser foot large connecting rod (62) connected with the middle presser foot eccentric wheel (61);
a middle presser foot rocker (63) connected with the middle presser foot large connecting rod (62);
a front crank (64) connected with the middle presser foot rocker (63);
a first front connecting rod (65) connected to the front crank (64);
a front rocker (66) connected to the first front link (65);
and the second front connecting rod (67) is connected with the front rocker (66), and the second front connecting rod (67) is connected with the middle presser bar (2).
10. A sewing machine characterized by comprising a sewing machine head according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122467646.9U CN215887474U (en) | 2021-10-13 | 2021-10-13 | Sewing machine head and sewing machine with same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122467646.9U CN215887474U (en) | 2021-10-13 | 2021-10-13 | Sewing machine head and sewing machine with same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215887474U true CN215887474U (en) | 2022-02-22 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122467646.9U Active CN215887474U (en) | 2021-10-13 | 2021-10-13 | Sewing machine head and sewing machine with same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215887474U (en) |
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2021
- 2021-10-13 CN CN202122467646.9U patent/CN215887474U/en active Active
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