CN211771936U - Sewing machine and thread releasing device thereof - Google Patents
Sewing machine and thread releasing device thereof Download PDFInfo
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- CN211771936U CN211771936U CN202020207216.6U CN202020207216U CN211771936U CN 211771936 U CN211771936 U CN 211771936U CN 202020207216 U CN202020207216 U CN 202020207216U CN 211771936 U CN211771936 U CN 211771936U
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Abstract
The utility model discloses a sewing machine and a thread releasing device thereof, wherein the thread releasing device comprises a driving part which is arranged on a shell; the first end of the pull wire is connected with the driving part; a pull plate, a second end of the pull plate being connected to the pull plate, the pull plate being rotatable relative to the housing; the lifting plate is rotatably connected with the wire drawing plate; the thread releasing lever is in lap joint with the lifting plate, and when the thread pulling plate rotates under the pulling action of the pulling thread, the lifting plate moves vertically upwards to drive the thread releasing lever to move vertically upwards so that the thread releasing lever triggers the thread releasing nail to move to complete thread releasing. Above-mentioned thread slackening device avoids acting as go-between to wear to establish and seals the food tray, reduces the risk of oil leak.
Description
Technical Field
The utility model relates to a sewing machine technical field, in particular to sewing machine and thread slackening device thereof.
Background
At present, a thread clamping device is often arranged on a sewing machine and is used for clamping the upper thread, so that the upper thread has proper tightness in the sewing process. When the sewing is finished and the facial line is cut off, the thread clamping device cannot automatically loosen the facial line, and the thread loosening device is required to control the thread clamping device to loosen.
To the thread releasing device, in the prior art, one end of the stay wire is connected with the stay wire plate, the other end of the stay wire is connected with the thread cutting lever, and the thread cutting electromagnet pushes the thread cutting lever to move.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a sewing machine and thread slackening device thereof avoids acting as go-between to wear to establish and seals the food tray, reduces the risk of oil leak.
In order to achieve the above object, the utility model provides a thread releasing device, include:
a driving part mounted on the housing;
the first end of the pull wire is connected with the driving part;
a pull plate, a second end of the pull plate being connected to the pull plate, the pull plate being rotatable relative to the housing;
the lifting plate is rotatably connected with the wire drawing plate;
the thread releasing lever is in lap joint with the lifting plate, and when the thread pulling plate rotates under the pulling action of the pulling thread, the lifting plate moves vertically upwards to drive the thread releasing lever to move vertically upwards so that the thread releasing lever triggers the thread releasing nail to move to complete thread releasing.
Optionally, the wire drawing plate comprises a main plate and an auxiliary plate which are connected with each other, the auxiliary plate is located at the top of the main plate, a preset angle is formed between the main plate and the auxiliary plate, the auxiliary plate is connected with the second end of the wire drawing, and the main plate is connected with the lifting plate in a rotating mode.
Optionally, the lifter plate sets up along vertical direction, the top of lifter plate with the mainboard rotates the connection, one side of lifter plate is equipped with and is used for supplying the lapped step face of pine line lever.
Optionally, the thread releasing lever comprises a lapping arm and a rotating arm which are connected with each other, the lapping arm is used for lapping with the step surface, a triggering surface for triggering the motion of the thread releasing nail is arranged at the top of the rotating arm, and an axis hole is arranged at the bottom of the rotating arm; under the lifting action of the lifting plate, the thread loosening lever can rotate by taking the shaft position hole as a shaft, so that the trigger surface triggers the thread loosening nail to move, and thread loosening is completed.
Optionally, the overlap joint arm with still be connected with the bending arm between the swinging boom, the overlap joint arm with both all set up along vertical direction of swinging boom, the swinging boom compare in the overlap joint arm is close to the drive division.
Optionally, the driving portion is specifically an electromagnet, and the electromagnet is configured to pull the pulling wire in an axial direction of the pulling wire.
The utility model provides a pair of sewing machine, including the thread slackening device of above-mentioned arbitrary one.
Optionally, the method further comprises:
the front lever of the tooth lifting foot is rotatably connected to the shell;
the first end of the pull rod is connected with the front lever of the tooth lifting foot, and the pull rod is positioned above the pull wire;
the connecting lever is positioned on one side, away from the wire drawing plate, of the driving part, and the second end of the pull rod is connected with the connecting lever;
the first end of the connecting rod is connected with the connecting lever;
the knee control presser foot lifting rear lever is positioned on one side, far away from the driving part, of the connecting lever and is connected with the second end of the connecting rod;
and the automatic presser foot lifting rear lever is connected with the knee control presser foot lifting rear lever.
Optionally, the connecting lever includes a first arm and a second arm connected to each other, the first arm and the second arm are located on the same plane and are disposed at a certain angle, the end of the first arm is connected to the second end of the pull rod, the connection point of the first arm and the second arm is connected to the connecting rod, and the connection point of the first arm and the second arm faces the side away from the driving portion.
Optionally, the knee-controlled presser foot lifting rear lever comprises a vertical arm and a horizontal arm connected with each other, the horizontal arm extends towards one side far away from the connecting rod, the bottom of the vertical arm is connected with the connecting rod, and the horizontal arm is connected with the automatic presser foot lifting rear lever.
Compared with the prior art, the utility model provides a thread loosening device utilizes the drive division drive stay wire motion of installing at the casing to make line-drawing board, lifter plate and pine line lever motion in proper order, finally utilize the motion of pine line lever touching pine line nail, accomplish the pine line. The wire pulling plate is rotated under the pulling action of the pulling wire, the rotating motion of the wire pulling plate is converted into the lifting motion of the lifting plate, and the wire releasing lever touches the wire releasing nail to move after being lifted by the lifting plate, so that the wire releasing of the wire clamping device is realized; the utility model provides a thread slacking device through the position that sets up of change drive division for acting as go-between does not wear to establish and seals the food tray, seals the risk that the oil tray does not have the oil leak, promotes the quality.
The utility model provides a sewing machine with thread slackening device possesses above-mentioned beneficial effect, and this paper here will not be repeated.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be 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 front view of a thread releasing device according to an embodiment of the present invention;
fig. 2 is a schematic view of another angle of the thread releasing device according to the embodiment of the present invention;
FIG. 3 is a schematic view of the thread release lever of FIG. 1;
FIG. 4 is a schematic view of the lifter plate of FIG. 1;
figure 5 is a schematic view of the tension plate of figure 1;
FIG. 6 is a schematic view of the front lever of the tooth raising foot of FIG. 1;
FIG. 7 is a schematic view of the drawbar of FIG. 1;
FIG. 8 is a schematic view of the connecting lever of FIG. 1;
FIG. 9 is a schematic view of the linkage of FIG. 1;
FIG. 10 is a schematic view of the knee controlled pressure foot lifting rear lever of FIG. 1;
wherein:
the thread releasing lever 1, the lap joint arm 110, the rotating arm 12, the trigger surface 120, the shaft hole 121, the bending arm 13,
A lifting plate 2, a connecting hole 21, a step surface 22,
The tension plate 3, the main plate 31, the auxiliary plate 32, the rotating shaft hole 310, the fixed shaft hole 311, the fastening hole 320,
A front lever 4 of the feed lifting teeth foot,
A pull rod 5,
A drive part 6,
A connecting lever 7, a first arm 71, a second arm 72,
A connecting rod 8,
Knee-controlled pressure foot lifting rear lever 9, vertical arm 91 and horizontal arm 92
A rear lever 10 for automatically lifting the presser foot,
A pull wire 11,
And a fastening portion 12.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In order to make the technical field of the present invention better understand, the present invention will be described in detail with reference to the accompanying drawings and the detailed description.
The embodiment of the utility model provides a thread slacking device, like specification attached figure 1 to attached figure 10, including thread slacking lever 1, lifter plate 2, line drawing board 3, drive division 6 and act as go-between 11.
The driving portion 6 may be embodied as an electromagnet or the like, which is mounted on a housing of the sewing machine. The first end of the stay wire 11 is connected with the driving part 6, and the stay wire and the driving part can be fastened by adopting a threaded connection mode and the like; the stay wire 11 can be made of 65Mn material.
The second end of the stay wire 11 is connected with the stay wire plate 3, and the stay wire 11 and the stay wire plate 3 can be locked by a fastening part 12 such as a nut. The wire drawing plate 3 is rotatably connected to the machine shell, the wire drawing plate 3 is rotatably connected with the lifting plate 2, the wire loosening lever 1 is in lap joint with the lifting plate 2, and the wire loosening nail of the wire loosening lever 1 and the wire clamping device is abutted.
When the driving part 6 during operation, the driving part 6 stimulates and acts as go-between 11, act as go-between 11 along its axial motion, act as go-between 11 and drive the rotation of acting as go-between 3, act as go-between 3 and drive lifter plate 2 and do the up-and-down motion, because the pine line lever 1 takes on lifter plate 2, when lifter plate 2 up-and-down motion, pine line lever 1 is circular motion, and pine line lever 1 triggers the pine line nail for the pine line nail motion, and then accomplish the pine line.
Referring to fig. 5 of the specification, the tension plate 3 includes a main plate 31 and a sub-plate 32, the main plate 31 and the sub-plate 32 are connected to each other, and the main plate 31 and the sub-plate 32 may be integrally formed.
The auxiliary plate 32 is located at the top of the main plate 31, a preset angle is formed between the main plate 31 and the auxiliary plate 32, the main plate 31 is provided with a rotating shaft hole 310 and a fixed shaft hole 311, the rotating shaft hole 310 and the lifting plate 2 can be rotatably connected through a pin and the like, the auxiliary plate 32 is provided with a fastening hole 320, and the fastening hole 320 and the pull wire 11 can be connected through threads.
When the driving part 6 works, the driving part 6 pulls the stay wire 11, the stay wire 11 drives the stay wire plate 3 to rotate, and the stay wire plate 3 can rotate by taking the fixed shaft hole 311 as a shaft, so that the stay wire plate 3 drives the lifting plate 2 to move up and down. The fixed shaft hole 311 can be matched with parts such as a rotating shaft, so that the wire pulling plate 3 can rotate compared with the machine shell.
Referring to the attached figure 4 of the specification, the lifting plate 2 is arranged in the vertical direction, the top of the lifting plate 2 is provided with a connecting hole 21, and the connecting hole 21 and the rotating shaft hole 310 can be rotatably connected through a rivet pin, so that the rotating connection between the lifting plate 2 and the wire pulling plate 3 is realized.
A step surface 22 is arranged on one side of the lifting plate 2 close to the driving part 6, the thread releasing lever 1 can be lapped on the step surface 22, and when the lifting plate 2 moves upwards, the overlapped part of the thread releasing lever 1 and the step surface 22 moves upwards, so that the thread releasing nail is triggered.
Referring to the attached drawing 3 of the specification, the thread releasing lever comprises a lap joint arm 110 and a rotating arm 12 which are connected with each other, the lap joint arm 110 is provided with a bending part, the bending part can be lapped with a step surface 22, the top of the rotating arm 12 is provided with a triggering surface 120, the triggering surface 120 is abutted to the thread releasing nail, and the bottom of the rotating arm 12 is provided with an axial hole 121.
When the lifting plate 2 moves upwards, the lapping arm 110 moves upwards, and the thread releasing lever 1 rotates by taking the shaft position hole 121 as a shaft as a whole, so that the triggering surface 120 triggers the thread releasing nail to move, and thread releasing is realized. The axial hole 121 may be provided with a rotating shaft and the like to ensure that the thread releasing lever 1 can rotate relative to the housing. For the working process and principle of the trigger surface 120 triggering the motion of the loose thread nail, reference may be made to the prior art, and the specific position and shape of the trigger surface 120 may be determined according to actual needs, which is not described herein again.
The bending arm 13 may be further connected between the overlapping arm 110 and the rotating arm 12, the overlapping arm 110, the rotating arm 12 and the bending arm 13 may be integrally formed, both the overlapping arm 110 and the rotating arm 12 are disposed along a vertical direction, and the rotating arm 12 is closer to the driving portion 6 than the overlapping arm 110, as shown in fig. 2 of the specification. The thread loosening device effectively improves the space utilization rate inside the sewing machine, and reliably realizes the thread loosening function on the premise that the original structure is not changed to the maximum extent.
The utility model provides a sewing machine with thread releasing device, which comprises the thread releasing device described in the above embodiment; other parts of the sewing machine can be referred to the prior art and are not expanded herein.
In the thread releasing device, the driving part 6 occupies the position of the original tooth lifting pull rod structure, so that the tooth lifting pull rod structure is reset for realizing the tooth lifting function, as shown in the specification, namely the attached drawings 1 and 2.
The feed lifting dog foot front lever 4 is rotatably connected to the machine shell, a part of the feed lifting dog foot front lever 4 and the thread tension plate 3 are overlapped with each other in the width direction of the sewing machine, a first end of the pull rod 5 is connected with the feed lifting dog foot front lever 4, and the pull rod 5 is positioned above the thread tension 11.
The connecting lever 7 is positioned on one side of the driving part 6, which is far away from the wire drawing plate 3, and the second end of the pull rod 5 is connected with the connecting lever 7; a connecting lever 7, a connecting rod 8, a knee-controlled rear presser foot lifting lever 9 and an automatic rear presser foot lifting lever 10 are sequentially arranged in the direction away from the driving part 6.
The first end of the connecting rod 8 is connected with the connecting lever 7, the second end of the connecting rod 8 is connected with the knee-controlled presser foot lifting rear lever 9, and the knee-controlled presser foot lifting rear lever 9 is connected with the automatic presser foot lifting rear lever 10.
It can be seen that the tooth lifting pull rod structure is added with the connecting lever 7 and the knee control foot lifting rear lever 9 just due to the existence of the driving part 6 in the thread loosening device, so that the tooth lifting action of the foot lifting is completed under the rotation action of the tooth lifting foot front lever 4.
As for the connecting lever 7, as shown in fig. 8 in the specification, the connecting lever includes a first arm 71 and a second arm 72 connected to each other, the first arm 71 and the second arm 72 are located on the same plane and are disposed at an angle, and both the first arm 71 and the second arm 72 may be integrally formed.
The end of the first arm 71 is connected to the second end of the pull rod 5, the connection point of the first arm 71 and the second arm 72 is connected to the link 8, and the connection point of the first arm 71 and the second arm 72 faces the side away from the driving part 6, as shown in fig. 1 and 2 of the specification.
With the arrangement, the motion of the pull rod 5 can be transmitted to the connecting lever 7 and is sequentially transmitted to the connecting rod 8, the knee-controlled rear presser foot lifting lever 9 and the automatic rear presser foot lifting lever 10 through the connecting lever 7, so that the tooth lifting action is completed.
For the knee-controlled presser foot lifting rear lever 9, as shown in the attached fig. 10, the knee-controlled presser foot lifting rear lever comprises a vertical arm 91 and a horizontal arm 92 which are connected with each other, the horizontal arm 92 extends towards the side far away from the connecting rod 8, the bottom of the vertical arm 91 is connected with the connecting rod 8, and the horizontal arm 92 is connected with the automatic presser foot lifting rear lever 10. The shape and structure of the knee-controlled presser foot lifting rear lever 9 are similar to those of the connecting lever 7, the connecting rod 8 and the knee-controlled presser foot lifting rear lever 9 can be provided with mounting through holes, and parts such as pins are matched with the mounting through holes to realize the rotary connection of the corresponding parts.
It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.
The sewing machine and the thread releasing device thereof provided by the utility model are introduced in detail. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (10)
1. A thread slacking device, comprising:
a drive unit (6), wherein the drive unit (6) is mounted on the housing;
a pull wire (11), wherein a first end of the pull wire (11) is connected with the driving part (6);
the wire drawing plate (3), the second end of the wire drawing plate (11) is connected with the wire drawing plate (3), and the wire drawing plate (3) can rotate relative to the machine shell;
the lifting plate (2) is rotatably connected with the wire drawing plate (3);
the thread loosening lever (1), the thread loosening lever (1) with lifter plate (2) overlap joint works as thread pulling plate (3) are in when rotatory under the pulling action of acting as go-between (11), the vertical upward movement of lifter plate (2) drives the vertical upward movement of thread loosening lever (1), so that the motion of thread loosening nail is triggered in thread loosening lever (1), accomplishes the thread loosening.
2. The thread slacking off device according to claim 1, characterized in that the thread slacking off plate (3) comprises a main plate (31) and a secondary plate (32) connected to each other, the secondary plate (32) being located on top of the main plate (31), the main plate (31) and the secondary plate (32) having a predetermined angle therebetween, the secondary plate (32) being connected to the second end of the thread slacking off plate (11), the main plate (31) being rotatably connected to the lifting plate (2).
3. The thread releasing device according to claim 2, wherein the lifting plate (2) is vertically arranged, the top of the lifting plate (2) is rotatably connected with the main plate (31), and a step surface (22) for overlapping the thread releasing lever (1) is arranged on one side of the lifting plate (2).
4. The thread releasing device according to claim 3, characterized in that the thread releasing lever (1) comprises an overlapping arm (110) and a rotating arm (12) which are connected with each other, the overlapping arm (110) is used for overlapping with the step surface (22), the top of the rotating arm (12) is provided with a triggering surface (120) used for triggering the motion of the thread releasing pin, and the bottom of the rotating arm (12) is provided with an axial hole (121); under the lifting action of the lifting plate (2), the thread releasing lever (1) can rotate by taking the shaft position hole (121) as a shaft, so that the triggering surface (120) triggers the thread releasing nail to move, and thread releasing is completed.
5. The thread slacking off device according to claim 4, characterized in that a bending arm (13) is further connected between the overlapping arm (110) and the rotating arm (12), both the overlapping arm (110) and the rotating arm (12) are arranged in a vertical direction, and the rotating arm (12) is closer to the driving portion (6) than the overlapping arm (110).
6. The thread releasing device according to any one of claims 1 to 5, wherein the driving portion (6) is embodied as an electromagnet for pulling the thread (11) in an axial direction of the thread (11).
7. A sewing machine comprising a thread slacking off device according to any one of claims 1 to 6.
8. The sewing machine of claim 7, further comprising:
the tooth lifting foot front lever (4) is rotatably connected to the shell;
the first end of the pull rod (5) is connected with the front lever (4) of the tooth lifting foot, and the pull rod (5) is positioned above the pull wire (11);
the connecting lever (7) is positioned on one side, away from the wire drawing plate (3), of the driving part (6), and the second end of the pull rod (5) is connected with the connecting lever (7);
the first end of the connecting rod (8) is connected with the connecting lever (7);
the knee-control presser foot lifting rear lever (9) is positioned on one side, away from the driving part (6), of the connecting lever (7), and the knee-control presser foot lifting rear lever (9) is connected with the second end of the connecting rod (8);
and the automatic presser foot lifting rear lever (10) is connected with the knee control presser foot lifting rear lever (9).
9. Sewing machine as in claim 8, characterized in that said connection lever (7) comprises a first arm (71) and a second arm (72) connected to each other, said first arm (71) and said second arm (72) being positioned in the same plane and being arranged angularly, the end of said first arm (71) being connected to the second end of said draw-bar (5), the junction of said first arm (71) and said second arm (72) being connected to said connecting rod (8), the junction of said first arm (71) and said second arm (72) facing away from said driving portion (6).
10. Sewing machine according to claim 9, characterized in that the knee-controlled presser foot lifting rear lever (9) comprises a vertical arm (91) and a horizontal arm (92) connected to each other, the horizontal arm (92) extending towards the side remote from the connecting rod (8), the vertical arm (91) being connected at its bottom to the connecting rod (8), the horizontal arm (92) being connected to the automatic presser foot lifting rear lever (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020207216.6U CN211771936U (en) | 2020-02-25 | 2020-02-25 | Sewing machine and thread releasing device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020207216.6U CN211771936U (en) | 2020-02-25 | 2020-02-25 | Sewing machine and thread releasing device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211771936U true CN211771936U (en) | 2020-10-27 |
Family
ID=72910026
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020207216.6U Active CN211771936U (en) | 2020-02-25 | 2020-02-25 | Sewing machine and thread releasing device thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211771936U (en) |
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2020
- 2020-02-25 CN CN202020207216.6U patent/CN211771936U/en active Active
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Address after: 318000 no.1008, east section of Donghai Avenue, Sanjia, Jiaojiang District, Taizhou City, Zhejiang Province Patentee after: Jack Technology Co.,Ltd. Address before: 318000 no.1008, east section of Donghai Avenue, Sanjia, Jiaojiang District, Taizhou City, Zhejiang Province Patentee before: JACK SEWING MACHINE Co.,Ltd. |