CN201801734U - Safety protection mechanism of sewing machine thread cutting device - Google Patents
Safety protection mechanism of sewing machine thread cutting device Download PDFInfo
- Publication number
- CN201801734U CN201801734U CN2010202949174U CN201020294917U CN201801734U CN 201801734 U CN201801734 U CN 201801734U CN 2010202949174 U CN2010202949174 U CN 2010202949174U CN 201020294917 U CN201020294917 U CN 201020294917U CN 201801734 U CN201801734 U CN 201801734U
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- CN
- China
- Prior art keywords
- thread cutting
- cutting device
- protection mechanism
- rotating shaft
- presser feet
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model discloses a safety protection mechanism of a sewing machine thread cutting device, which comprises an overedging machine head, a worktable, a thread cutting device and a controller, wherein the thread cutting device is mounted beside the overedging machine head, and the thread cutter of the thread cutting device is arranged behind a presser foot. The safety protection mechanism is characterized in that a detecting unit for detecting the lifting state of the presser foot is arranged beside the presser foot, the signal output terminal of the detecting unit is connected with the input terminal of the controller, and the output terminal of the controller is connected with and controls the thread cutting device. Since the safety protection mechanism of sewing machine thread cutting device is adopted, the thread cutting device of the sewing machine can be prevented from acting when the presser foot is being lifted, thereby reducing the accident and improving the safety performance.
Description
(1) technical field:
The utility model relates to a kind of security protection mechanism of Sewing machines thread cutting device.
(2) background technology:
The existing sewing machine thread cutting device, thread cutting device is installed in the next door of overlock machine head and is controlled by controller, and the tangential knife of thread cutting device is positioned at the rear of pin, the top of playing presser feet, the workman has mentioned presser feet sometimes because of need of work, and stretched into the position of presser feet annex by finger and handled, but because the Sewing machines thread cutting device is to carry out tangent line automatically after the induction, be very easy to occur maloperation, industrial accident appears in the finger cut wound with the workman, so security is not high.
(3) utility model content:
In order to overcome the deficiencies in the prior art, the utility model provides a kind of security protection mechanism of Sewing machines thread cutting device, and it is avoided when having mentioned presser feet, the action of Sewing machines thread cutting device, and the generation of minimizing accident improves security performance.
The utility model is to realize by following technical scheme:
A kind of security protection mechanism of Sewing machines thread cutting device, comprise overlock machine head, workbench, thread cutting device and controller, thread cutting device is installed in the next door of overlock machine head, and the tangential knife of thread cutting device has been positioned at the rear of presser feet, be provided with on the next door of playing presser feet detected presser feet mention the status detection unit, the signal output part of detecting unit is connected with the input of controller, and the output of controller connects and the control thread cutting device.
Above-mentioned described detecting unit is contact-making switch or inductive switch.
Above-mentioned described contact-making switch is installed in the overlock machine head, and its contact contacts with the support arm that plays presser feet.
Above-mentioned described thread cutting device comprises tangential knife, stationary knife and rotating shaft, transmission mechanism and the driving mechanism that is installed on the knife rest, the end that tangential knife is installed in rotating shaft can rotate around the axis and cooperate with stationary knife, driving mechanism comprises electromagnetic valve, transmission mechanism comprises swing arm and short connecting rod, one end of described short connecting rod and the valve rod of electromagnetic valve are hinged, and the other end and swing arm are hinged, and described rotating shaft is installed in the other end of swing arm, rotating shaft is installed on the knife rest, also is with torsion spring in the rotating shaft.
The output of above-mentioned described controller connects and the control electromagnetic valve.
The utility model compared with prior art has following advantage: 1) be provided with on the next door of playing presser feet detected presser feet mention the status detection unit, when a presser feet is mentioned, the detecting unit output signal is to controller, controller suspends the work of thread cutting device, accidentally injured by thread cutting device when avoiding workman's finger to stretch into the position of presser feet annex, reduce accident and take place, improve the security of using; 2) detecting unit is contact-making switch or inductive switch, and is simple in structure; 3) adopt contact-making switch to be installed in the overlock machine head, its contact contacts with the support arm of a presser feet, can simplified structure, reduce cost.
(4) description of drawings:
Below in conjunction with accompanying drawing the utility model is done detailed explanation:
Fig. 1 is an angle structural representation of the utility model thread cutting device;
Fig. 2 is the structural representation of another angle of the utility model thread cutting device;
Fig. 3 is the structural representation of integral body of the present utility model;
Fig. 4 is the utility model control principle figure.
(5) specific embodiment:
As Fig. 1, shown in Figure 2, thread cutting device comprises tangential knife 1, be installed in the stationary knife 3 on the knife rest 2, rotating shaft 4, transmission mechanism and driving mechanism, tangential knife 1 is installed in end 4 rotations around the shaft of rotating shaft 4 and cooperates with stationary knife 3, driving mechanism comprises electromagnetic valve 6, transmission mechanism comprises swing arm 8 and short connecting rod 9, one end of described short connecting rod 9 and the valve rod 7 of electromagnetic valve 6 are hinged, the other end and swing arm 8 are hinged, described rotating shaft 4 is installed in the other end of swing arm 8, rotating shaft 4 is installed on the knife rest 2, also be with torsion spring 5 in the rotating shaft 4, the valve rod 7 and the transmission mechanism of electromagnetic valve 6 are hinged, tangential knife 1 is installed in an end of rotating shaft 4, make valve rod 7 motions of electromagnetic valve 6 by the adhesive of electromagnetic valve 6, drive transmission mechanism rotating shaft 4 is rotated, thereby make tangential knife 14 rotate and cooperates with stationary knife 3 around the shaft, torsion spring 5 can make rotating shaft 4 and tangential knife 1 rotate realization and automatically reset.Cloth sensing unit 11 is set above tangential knife 1, and the output of cloth sensing unit 11 connects the input of controller.
As shown in Figure 3 and Figure 4, the security protection mechanism of Sewing machines thread cutting device of the present utility model, comprise the overlock machine head, workbench, thread cutting device and controller, thread cutting device is installed in the next door of overlock machine head, and the tangential knife 1 of thread cutting device has been positioned at the rear of presser feet 10, be provided with on the next door of playing presser feet 10 detected presser feet 10 mention the status detection unit, the signal output part of detecting unit is connected with the input of controller, the output of controller connects and the control thread cutting device, detecting unit is contact-making switch 13 or inductive switch, contact-making switch 13 is installed in the overlock machine head, its contact contacts with the support arm 12 that plays presser feet 10, and contact-making switch 13 is connected to controller by lead 14.
Operation principle of the present utility model is: when a presser feet 10 was not mentioned, the support arm 12 that plays presser feet 10 withstood on the contact of contact-making switch 13, makes contact-making switch 13 not have output signal to arrive controller, and thread cutting device does not quit work; When the workman has mentioned presser feet 10, support arm 12 swing certain angles, support arm 12 makes contact-making switch 13 output signals to controller not at the contact of roof pressure contact-making switch 13, and controller sends instruction and stops electromagnetic valve 6, and thread cutting device quits work.
The foregoing description is a better embodiment of the present utility model; but embodiment of the present utility model is not limited thereto; other any change, the modification of being done under spiritual essence of the present utility model and the principle, substitute modes that substitute, make up, simplify equivalence of not deviating from are included within the protection domain of the present utility model.
Claims (5)
1. the security protection mechanism of a Sewing machines thread cutting device, comprise overlock machine head, workbench, thread cutting device and controller, thread cutting device is installed in the next door of overlock machine head, and the tangential knife of thread cutting device has been positioned at the rear of presser feet, it is characterized in that: be provided with on the next door of playing presser feet detected presser feet mention the status detection unit, the signal output part of detecting unit is connected with the input of controller, and the output of controller connects and the control thread cutting device.
2. the security protection mechanism of a kind of Sewing machines thread cutting device according to claim 1 is characterized in that: detecting unit is contact-making switch or inductive switch.
3. the security protection mechanism of a kind of Sewing machines thread cutting device according to claim 2 is characterized in that: contact-making switch is installed in the overlock machine head, and its contact contacts with the support arm that plays presser feet.
4. according to claim 1, the security protection mechanism of 2 or 3 described a kind of Sewing machines thread cutting devices, it is characterized in that: thread cutting device comprises the tangential knife that is installed on the knife rest, stationary knife and rotating shaft, transmission mechanism and driving mechanism, the end that tangential knife is installed in rotating shaft can rotate around the axis and cooperate with stationary knife, driving mechanism comprises electromagnetic valve, transmission mechanism comprises swing arm and short connecting rod, one end of described short connecting rod and the valve rod of electromagnetic valve are hinged, the other end and swing arm are hinged, described rotating shaft is installed in the other end of swing arm, rotating shaft is installed on the knife rest, also is with torsion spring in the rotating shaft.
5. according to the security protection mechanism of claim 1,2 or 3 described a kind of Sewing machines thread cutting devices, it is characterized in that: the output of described controller connects and the control electromagnetic valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202949174U CN201801734U (en) | 2010-08-12 | 2010-08-12 | Safety protection mechanism of sewing machine thread cutting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202949174U CN201801734U (en) | 2010-08-12 | 2010-08-12 | Safety protection mechanism of sewing machine thread cutting device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201801734U true CN201801734U (en) | 2011-04-20 |
Family
ID=43871249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202949174U Expired - Fee Related CN201801734U (en) | 2010-08-12 | 2010-08-12 | Safety protection mechanism of sewing machine thread cutting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201801734U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105586726A (en) * | 2016-01-28 | 2016-05-18 | 中山市天虹电机制造有限公司 | Automatic thread trimming device for overlock machine |
-
2010
- 2010-08-12 CN CN2010202949174U patent/CN201801734U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105586726A (en) * | 2016-01-28 | 2016-05-18 | 中山市天虹电机制造有限公司 | Automatic thread trimming device for overlock machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110420 Termination date: 20140812 |
|
| EXPY | Termination of patent right or utility model |