CN216712428U

CN216712428U - Thread clamping device and sewing machine with same

Info

Publication number: CN216712428U
Application number: CN202122938196.7U
Authority: CN
Inventors: 李健鹏; 熊径武; 王松
Original assignee: Zhejiang Dole Sewing Machine Co ltd
Current assignee: Zhejiang Dole Sewing Machine Co ltd
Priority date: 2021-11-25
Filing date: 2021-11-25
Publication date: 2022-06-10
Anticipated expiration: 2031-11-25

Abstract

The utility model provides a thread clamping device and a sewing machine with the same, wherein the thread clamping device is used for clamping a thread body in the sewing machine, and comprises: a housing disposed in a housing of a sewing machine; the wire clamping column is connected with the shell; the first wire clamping component is sleeved on the wire clamping column; and is movably arranged relative to the wire clamping column; the second wire clamping component is connected with the shell and arranged at intervals with the first wire clamping component; the electromagnet component is connected with the shell of the sewing machine; the push rod component is in driving connection with the electromagnet component, so that the push rod component is electromagnetically driven to move by supplying current to the electromagnet component, and the push rod component pushes the first thread clamping component to clamp the thread body between the first thread clamping component and the second thread clamping component.

Description

Thread clamping device and sewing machine with same

Technical Field

The utility model relates to the field of sewing machines, in particular to a thread clamping device and a sewing machine with the same.

Background

In the existing sewing machine, a certain force is required to clamp the thread during working, and a thread clamping device is usually driven by a driving device such as a motor.

However, in the above driving method, when the clamp plate is driven to clamp the thread, the clamping force is not well controlled, thereby affecting the performance of the sewing machine.

SUMMERY OF THE UTILITY MODEL

The utility model mainly aims to provide a thread clamping device and a sewing machine with the same, and aims to solve the problem that the thread tension of the sewing machine in the prior art cannot be controlled by a control system.

In order to achieve the above object, according to one aspect of the present invention, there is provided a thread clamping device for clamping a thread body in a sewing machine, the thread clamping device comprising: a housing disposed in a housing of a sewing machine; the wire clamping column is connected with the shell; the first wire clamping component is sleeved on the wire clamping column; and is movably arranged relative to the wire clamping column; the second wire clamping component is connected with the shell and arranged at intervals with the first wire clamping component; the electromagnet component is connected with the shell of the sewing machine; the push rod component is in driving connection with the electromagnet component so as to drive the push rod component to move electromagnetically by introducing current to the electromagnet component, and the push rod component pushes the first wire clamping component to clamp the wire body between the first wire clamping component and the second wire clamping component; and the thrust of the push rod component is changed by changing the magnitude of the current, so that the force of the first wire clamping component and the second wire clamping component for clamping the wire body is changed.

Further, the trapping mechanism still includes: the ejector pin penetrates through the wire clamping column and is movably arranged relative to the wire clamping column; one end of the ejector pin is used for being abutted against the push rod component, and the other end of the ejector pin is connected with the first wire clamping component.

Further, the ejector pin has an ejector head for abutment with the push rod member, the ejector head being at least part of a spherical structure.

Further, be provided with movable groove on the press from both sides the line post, press from both sides the traditional thread binding putting and still include the rand, the rand including be used for with the first promotion portion that presss from both sides the line part butt with be used for with the connecting portion of knock pin connection, connecting portion pass through movable groove and knock pin connection, the at least part of connecting portion is movably setting in movable groove to drive the rand through the knock pin and remove, thereby promote the first line part that presss from both sides and remove.

Furthermore, the wire clamping device further comprises a limiting check ring, the limiting check ring is arranged on the wire clamping column and is located on one side, away from the first wire clamping component, of the second wire clamping component and connected with the second wire clamping component.

Further, be provided with on the casing and be used for the holding tank, trapping mechanism still includes: the take-up spring is arranged in the accommodating groove, one end of the take-up spring is connected with the shell, the other end of the take-up spring is provided with a take-up part positioned outside the shell, and at least part of the wire body is hung on the take-up part; the sensor component, at least part of the line-drawing part is movably arranged relative to the sensor component, so that the line-drawing part is contacted with the sensor component, or the line body pulls the line-drawing part away from the sensor component; and the control module is used for stopping the current from being introduced into the electromagnet part through the control module when the contact time between the line-drawing part and the sensing part is longer than the preset time.

Further, the trapping post includes: one end of the thread take-up spring, which is far away from the thread take-up part, is clamped in the fixing groove; the adjusting joint is positioned at one end, far away from the push rod component, of the take-up spring and is in threaded connection with the shell, so that the tightness of the take-up spring can be adjusted by rotating the adjusting joint.

Further, the sensing part includes: the component body is connected with the shell, and one end of the component body is used for being connected with the control module; the sensing part is connected with the other end of the component body and is perpendicular to the component body.

Furthermore, the wire clamping device comprises a connecting plate, the connecting plate is connected with the shell, the part body is provided with a connecting groove, and the sensing part is arranged on the connecting plate by penetrating a connecting piece into the connecting groove and the connecting plate; wherein, the connecting groove is an arc groove.

Furthermore, the take-up portion comprises a connecting portion and a hook portion, the connecting portion is used for being abutted to the sensing component, the hook portion is used for hanging the wire body, and the hook portion is located on one side, away from the connecting portion, of the sensing portion.

Further, the wire clamping device comprises an insulating plate, and the insulating plate is arranged between the shell and the sensing component so as to isolate the shell from the sensing component through the insulating plate.

According to another aspect of the present invention, there is provided a sewing machine comprising a thread clamping device as described above.

By applying the technical scheme of the utility model, the thread clamping device is used for clamping a thread body in a sewing machine, and comprises: a housing disposed in a housing of a sewing machine; the wire clamping column is connected with the shell; the first wire clamping component is sleeved on the wire clamping column; and is movably arranged relative to the wire clamping column; the second wire clamping component is connected with the shell and arranged at intervals with the first wire clamping component; the electromagnet component is connected with the shell of the sewing machine; the push rod component is in driving connection with the electromagnet component so as to drive the push rod component to move electromagnetically by introducing current to the electromagnet component and enable the push rod component to push the first wire clamping component to clamp the wire body between the first wire clamping component and the second wire clamping component; and the thrust of the push rod component is changed by changing the magnitude of the current, so that the force for clamping the wire body by the first wire clamping component and the second wire clamping component is changed. By adopting the arrangement, the electromagnet part is electrified so as to drive the push rod part to move to push the first thread clamping part to clamp the thread body between the first thread clamping part and the second thread clamping part, the driving mode can control the push rod part to push through controlling the current electrified to the electromagnet part, thereby adjusting the pressure between the first thread clamping part and the second thread clamping part, improving the thread clamping function of the thread clamping device and solving the problem that the thread tension of the sewing machine in the prior art can not be controlled by the control system.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

fig. 1 shows a schematic view of the internal structure of an embodiment of a thread clamping device according to the utility model;

FIG. 2 shows a schematic structural view of an embodiment of the thread clamping device of the present invention;

FIG. 3 shows a front view of an embodiment of the thread clamp of the present invention;

FIG. 4 is a schematic view of the structure of the wire clamping column of the wire clamping device of the present invention;

fig. 5 shows a schematic structural view of a collar of the wire clamping device of the utility model.

Wherein the figures include the following reference numerals:

10. a housing; 11. a first wire clamping member; 12. a second wire clamping member; 13. a wire clamping column; 131. a movable groove; 132. fixing grooves; 133. adjusting the joint; 14. a limiting retainer ring; 2. an electromagnet member; 3. a push rod member; 4. a knock pin; 5. a collar; 51. a pushing part; 52. a connecting portion; 6. a thread take-up spring; 61. a line-drawing part; 611. a connecting portion; 612. a hook portion; 7. a sensing component; 71. a component body; 711. connecting grooves; 72. a sensing part; 8. a connecting plate; 9. an insulating plate.

Detailed Description

The thread clamping device of the present embodiment, referring to fig. 1 to 5, is used for clamping a thread body in a sewing machine, and comprises: a housing 10 disposed in a cabinet of a sewing machine; the wire clamping column 13, the wire clamping column 13 is connected with the shell 10; the first wire clamping part 11 is sleeved on the wire clamping column 13, and the first wire clamping part 11 is sleeved on the wire clamping column 13; and is movably arranged relative to the wire clamping column 13; the second wire clamping component 12 is connected with the shell 10, and the second wire clamping component 12 and the first wire clamping component 11 are arranged at intervals; the electromagnet component 2, the electromagnet component 2 is connected with the shell of the sewing machine; the push rod component 3 is in driving connection with the electromagnet component 2, so that the push rod component 3 is driven to move electromagnetically by introducing current to the electromagnet component 2, and the push rod component 3 pushes the first wire clamping component 11 to clamp the wire body between the first wire clamping component 11 and the second wire clamping component 12; then, by changing the magnitude of the current to change the thrust of the push rod member 3, the force with which the first wire clamping member 11 and the second wire clamping member 12 clamp the wire body is changed. By adopting the arrangement, the current is introduced into the electromagnet component 2, so that the electromagnet driving push rod component 3 moves to push the first wire clamping component 11 to clamp the wire body between the first wire clamping component 11 and the second wire clamping component 12, the driving mode can control the push rod component 3 to push through controlling the current introduced into the electromagnet component 2, thereby adjusting the pressure between the first wire clamping component 11 and the second wire clamping component 12, further improving the wire clamping function of the wire clamping device, and solving the problem that the wire tension of the wire clamping device of the sewing machine in the prior art can not be controlled by a control system.

Referring to fig. 1 to 5, the wire clamping device of the present embodiment further includes: the ejector pin 4 is arranged in the wire clamping column 13 in a penetrating mode, and the ejector pin 4 is movably arranged relative to the wire clamping column 13; one end of the knock pin 4 is abutted against the push rod member 3, and the other end of the knock pin 4 is connected to the first wire clamping member 11.

In the wire clamping device of the present embodiment, referring to fig. 1 to 3, the ejector pin 4 has an ejector head for abutting against the push rod member 3, and the ejector head is at least a part of a spherical structure. Therefore, the push rod component 3 can better control the force for pushing the ejector pin 4, and the force between the first wire clamping component 11 and the second wire clamping component 12 can be more accurately controlled.

In order to achieve the effect of pushing the clamping line body by using the ejector pin 4, referring to fig. 1 to 5, the line clamping device of the present embodiment, a movable groove 131 is provided on the line clamping column 13, the line clamping device further includes a collar 5, the collar 5 includes a pushing portion 51 for abutting against the first line clamping component 11 and a connecting portion 52 for connecting with the ejector pin 4, the connecting portion 52 is connected with the ejector pin 4 through the movable groove 131, at least a part of the connecting portion 52 is movably disposed in the movable groove 131 to drive the collar 5 to move through the ejector pin 4, so as to push the first line clamping component 11 to move. Thus, the movement of the first wire clamping member 11 is made more smooth.

Referring to fig. 1 to 5, the wire clamping device of the present embodiment further includes a limiting retainer 14, the limiting retainer 14 is disposed on the wire clamping column 13, and the limiting retainer 14 is located on a side of the second wire clamping part 12 away from the first wire clamping part 11 and is connected to the second wire clamping part 12.

Referring to fig. 1 to 5, in the wire clamping device of the present embodiment, a housing 10 is provided with a receiving groove, and the wire clamping device further includes: the thread taking-up spring 6 is arranged in the accommodating groove, one end of the thread taking-up spring 6 is connected with the shell 10, the other end of the thread taking-up spring 6 is provided with a thread taking-up part 61 positioned outside the shell 10, and at least part of a thread body is hung on the thread taking-up part 61; a sensing part 7, at least part of the wire-drawing part 61 is movably arranged relative to the sensing part 7, so that the wire-drawing part 61 is contacted with the sensing part 7 or the wire-drawing part 61 is far away from the sensing part 7; and the sensing component 7 is in signal connection with the control module, and when the contact time of the line-drawing part 61 and the sensing component 7 is longer than the preset time, the current is stopped to be led into the electromagnet component 2 through the control module.

Specifically, when the first wire clamping part 11 extrudes the second wire clamping part 12, the force of the first wire clamping part 11 extruding the second wire clamping part 12 can be buffered through the wire picking spring 6, when the wire body needs to be loosened, the electromagnet part 2 is powered off, the push rod part 3 is far away from and releases the first wire clamping part 11, and at the moment, the first wire clamping part 11 is far away from the second wire clamping part 12 under the action of the resilience force of the wire picking spring 6, so that the wire body is loosened.

Specifically, referring to fig. 3, one end of the spring near the first wire clamping member 11 is inserted into the outer side of the receiving groove and is folded into a wire gathering portion 61. In operation, the thread bodies pick up the wire-picking portions 61 at intervals, and the wire-picking portions 61 are brought into contact with the sensor member 7 at intervals. When the contact time of the wire-drawing part 61 and the sensing part 7 is too long, the position of the wire body is deviated, and the control module can control the power failure.

In the wire clamping device of the present embodiment, referring to fig. 1 to 4, the wire clamping column 13 includes: the fixing groove 132, one end of the thread take-up spring 6 far away from the thread take-up part 61 is clamped in the fixing groove 132; an adjusting joint 133, the adjusting joint 133 is located at one end of the thread take-up spring 6 far away from the push rod component 3, the adjusting joint 133 is in threaded connection with the shell 10, so that the tightness of the thread take-up spring 6 can be adjusted by rotating the adjusting joint 133. In this way, the force with which the wire body pulls the wire take-up portion 61 to move can be adjusted, making it possible to control the degree of tensioning of the wire body.

Referring to fig. 1 to 5, in the wire clamping device of the present embodiment, the sensing part 7 includes: the component body 71, the component body 71 is connected with the shell 10, and one end of the component body 71 is used for connecting with the control module; and the sensing part 72, wherein the sensing part 72 is connected with the other end of the component body 71, and the sensing part 72 is arranged perpendicular to the component body 71.

The wire clamping device of the present embodiment, referring to fig. 1 to 3, includes a connecting plate 8, the connecting plate 8 is connected to the housing 10, the member body 71 has a connecting groove 711, so as to mount the sensing member 7 on the connecting plate 8 by penetrating a connecting member onto the connecting groove 711 and the connecting plate 8; wherein, the connecting groove 711 is an arc-shaped groove. By providing the connecting groove 711 as an arc-shaped groove, the distance between the sensing part 72 and the thread take-up part 61 is adjusted.

Referring to fig. 1 to 3, in the thread clamping device of the present embodiment, the thread picking portion 61 includes a connecting portion 611 for abutting against the sensing component 7 and a hook portion 612 for hanging the thread, and the hook portion 612 is located on a side of the sensing portion 72 away from the connecting portion 611. Thus, the wire body is convenient to pull the hook part 612 so as to drive the connecting part 611 to be far away from the sensing part 72.

In order to avoid the sensing function of the sensing part 7 from being interfered, the wire clamping device of the present embodiment, referring to fig. 1 to 3, includes an insulating plate 9, and the insulating plate 9 is disposed between the housing 10 and the sensing part 7 to isolate the housing 10 from the sensing part 7 through the insulating plate 9.

The sewing machine of the embodiment comprises the thread clamping device, and the thread clamping device is the thread clamping device.

The sewing machine of the present embodiment is explained as follows:

in the thread tension device of the sewing machine according to the present embodiment, the thread tension device includes a housing 10, a thread take-up spring (thread take-up spring 6), a retainer ring 5, a first thread tension member 11, a second thread tension member 12, and a stopper ring 14. A limit check ring 14 is arranged on one side of the second wire clamping component 12, and the electromagnet component 2 enables the first wire clamping component 11 to clamp the second wire clamping component 12 by pushing the clamping ring 5 through the ejector pin 4. The limiting retainer ring 14, the second wire clamping component 12, the first wire clamping component 11, the retainer ring 5 and the take-up spring respectively penetrate through the wire clamping column 13, and the wire clamping column 13 is fixed on the shell 10. The clamping force on the first wire clamping member 11 and the second wire clamping member 12 is adjusted by adjusting the magnitude of the current of the electromagnet member 2. In the working process, the thread take-up spring is always kept in intermittent contact with the conductive sensing piece (sensing part 7) and keeps a certain frequency, and the conductive sensing piece is connected with a control system (control module) through a cable. When the thread picking spring and the conductive sensing piece are always in contact for more than a certain time, the control system judges that the thread is broken and stops working, otherwise, the control system keeps continuous working.

From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:

the utility model relates to a thread clamping device, which is used for clamping a thread body in a sewing machine, and comprises: a housing 10 disposed in a cabinet of a sewing machine; the wire clamping column 13, the wire clamping column 13 is connected with the shell 10; the first wire clamping part 11 is sleeved on the wire clamping column 13, and the first wire clamping part 11 is sleeved on the wire clamping column 13; and is movably arranged relative to the wire clamping column 13; the second wire clamping component 12, the second wire clamping component 12 is connected with the shell 10, the second wire clamping component 12 and the first wire clamping component 11 are arranged at intervals; the electromagnet component 2, the electromagnet component 2 is connected with the shell of the sewing machine; the push rod component 3 is in driving connection with the electromagnet component 2, so that the push rod component 3 is electromagnetically driven to move by supplying current to the electromagnet component 2, and the push rod component 3 pushes the first wire clamping component 11 to clamp a wire body between the first wire clamping component 11 and the second wire clamping component 12; then, by changing the magnitude of the current, the thrust of the push rod member 3 is changed, and the force with which the first wire clamping member 11 and the second wire clamping member 12 clamp the wire body is changed. By adopting the arrangement, the current is introduced into the electromagnet component 2, so that the electromagnet driving push rod component 3 moves to push the first wire clamping component 11 to clamp the wire body between the first wire clamping component 11 and the second wire clamping component 12, the driving mode can control the push rod component 3 to push through controlling the current introduced into the electromagnet component 2, thereby adjusting the pressure between the first wire clamping component 11 and the second wire clamping component 12, further improving the wire clamping function of the wire clamping device, and solving the problem that the wire tension of the sewing machine in the prior art can not be controlled by a control system.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides a thread clamping device for press from both sides the line body in the sewing machine, its characterized in that, thread clamping device includes:

a housing (10) provided in a housing of the sewing machine;

the wire clamping column (13), the wire clamping column (13) is connected with the shell (10);

the first wire clamping part (11), the first wire clamping part (11) is sleeved on the wire clamping column (13); and is movably arranged relative to the wire clamping column (13);

a second wire clamping component (12), wherein the second wire clamping component (12) is connected with the shell (10), and the second wire clamping component (12) and the first wire clamping component (11) are arranged at intervals;

the electromagnet component (2), the said electromagnet component (2) is connected with the chassis of the said Sewing machines;

the push rod component (3) is in driving connection with the electromagnet component (2) so as to enable the push rod component (3) to be electromagnetically driven to move by supplying current to the electromagnet component (2), and the push rod component (3) pushes the first wire clamping component (11) to clamp the wire body between the first wire clamping component (11) and the second wire clamping component (12); and the magnitude of the current is changed to change the thrust of the push rod component (3), so that the force of the first wire clamping component (11) and the second wire clamping component (12) for clamping the wire body is changed.

2. The thread clamp according to claim 1, further comprising:

the ejector pin (4) penetrates through the wire clamping column (13), and the ejector pin (4) is movably arranged relative to the wire clamping column (13); one end of the ejector pin (4) is used for being abutted to the push rod component (3), and the other end of the ejector pin (4) is connected with the first wire clamping component (11).

3. The thread clamp according to claim 2, characterized in that the ejector pin (4) has an ejector head for abutment with the push rod member (3), the ejector head being at least part of a spherical structure.

4. The wire clamping device according to claim 2, characterized in that a movable groove (131) is arranged on the wire clamping column (13), the wire clamping device further comprises a collar (5), the collar (5) comprises a pushing portion (51) for abutting against the first wire clamping component (11) and a connecting portion (52) for connecting with the ejector pin (4), the connecting portion (52) is connected with the ejector pin (4) through the movable groove (131), and at least part of the connecting portion (52) is movably arranged in the movable groove (131) so as to drive the collar (5) to move through the ejector pin (4) and further push the first wire clamping component (11) to move.

5. The wire clamping device according to claim 2, characterized in that the wire clamping device further comprises a limiting stop ring (14), the limiting stop ring (14) is arranged on the wire clamping column (13), and the limiting stop ring (14) is positioned on one side of the second wire clamping part (12) far away from the first wire clamping part (11) and is connected with the second wire clamping part (12).

6. The thread clamp according to claim 1, characterized in that said housing (10) is provided with a receiving slot, said thread clamp further comprising:

the take-up spring (6) is arranged in the accommodating groove, one end of the take-up spring (6) is connected with the shell (10), the other end of the take-up spring (6) is provided with a take-up part (61) positioned outside the shell (10), and at least part of the wire body is hung on the take-up part (61);

a sensing member (7), wherein at least part of the wire take-up part (61) is movably arranged relative to the sensing member (7) so that the wire take-up part (61) is in contact with the sensing member (7) or the wire body pulls the wire take-up part (61) away from the sensing member (7);

and the control module is used for connecting the sensing component (7) with the control module through signals, and when the duration of the contact time of the line-drawing part (61) and the sensing component (7) is greater than the preset duration, the control module stops leading current to the electromagnet component (2).

7. The thread clamp according to claim 6, characterized in that the clamping stud (13) comprises:

the fixing groove (132), one end of the thread take-up spring (6) far away from the thread take-up part (61) is clamped in the fixing groove (132);

the adjusting joint (133) is located at one end, far away from the push rod component (3), of the take-up spring (6), and the adjusting joint (133) is in threaded connection with the shell (10) so that the tightness of the take-up spring (6) can be adjusted by rotating the adjusting joint (133).

8. The wire clamping device according to claim 6, characterized in that the sensing member (7) comprises:

the component body (71), the component body (71) is connected with the shell (10), and one end of the component body (71) is used for being connected with the control module;

the sensing part (72) is connected with the other end of the component body (71), and the sensing part (72) is perpendicular to the component body (71).

9. The thread clamp according to claim 8, characterized in that it comprises a connection plate (8), said connection plate (8) being connected with said housing (10), said member body (71) having a connection groove (711) for mounting said sensing member (7) on said connection plate (8) by passing a connection element onto said connection groove (711) and said connection plate (8); wherein, the connecting groove (711) is an arc-shaped groove.

10. The wire clamping device according to claim 8, characterized in that the wire lifting part (61) comprises a connecting part (611) for abutting against the sensing part (7) and a hook part (612) for hanging a wire body, wherein the hook part (612) is positioned on one side of the sensing part (72) far away from the connecting part (611).

11. The wire clamping device according to claim 6, characterized in that it comprises an insulating plate (9), said insulating plate (9) being arranged between said housing (10) and said sensing component (7) to insulate said housing (10) from said sensing component (7) by said insulating plate (9).

12. A sewing machine comprising a thread clamp, characterized in that the thread clamp is as claimed in any one of claims 1 to 11.