CN200992636Y - Electric thread trimmer for sewing machine - Google Patents
Electric thread trimmer for sewing machine Download PDFInfo
- Publication number
- CN200992636Y CN200992636Y CN 200620170962 CN200620170962U CN200992636Y CN 200992636 Y CN200992636 Y CN 200992636Y CN 200620170962 CN200620170962 CN 200620170962 CN 200620170962 U CN200620170962 U CN 200620170962U CN 200992636 Y CN200992636 Y CN 200992636Y
- Authority
- CN
- China
- Prior art keywords
- head
- guide plate
- knife
- transmission shaft
- selvage guide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Sewing Machines And Sewing (AREA)
Abstract
The utility model relates to an electrical thread cutter for the sowing machine, including a head (2), a moving knife (4), a cloth guide plate (5), a fixed knife (6), a transmission shaft (7), and a spring (8). The transmission shaft (7) is installed at one side of the head (2), the spring (8) and the moving knife (4) are installed on the transmission shaft (7), the cloth guide plate (5) is arranged at the other side of the head (2), the fixed knife (6) is fixed in front of the head (2) and positioned at the same side of the cloth guide plate. The utility model is characterized in that the transmission shaft (7) is connected with a motor (11), and the utility model will not obstruct the motion of cloth.
Description
Technical field
The utility model relates to a kind of thread cutter, relates in particular to the electronic thread cutter that uses on the Sewing machines in a kind of sewing device.Belong to technical field of sewing equipment.
Background technology
Automatic shearing device on the Sewing machines has had multiple design at present, and these designs respectively have pluses and minuses.The Sewing machines automatic shearing device that ZL 200520079397.4 utility model patents are described is exactly wherein a kind of.This Sewing machines automatic shearing device is made up of switch, control cabinet, head, electromagnet, connecting rod, selvage guide plate (original text is the seam platform), power transmission shaft, spring, cutting knife and optical flame detector.Be provided with a cover cutting knife near the outlet of cloth, cutting knife is made up of moving knife and stationary knife, and stationary knife is installed in the front end of head, and moving knife becomes about 45 degree with the initial angle of seam platform.Electromagnet promotion moving knife makes moving knife and stationary knife interlock cut off suture when needing trimming.This Sewing machines automatic shearing device is compared with other design has the trimming wide ranges, processing ease, the advantages such as source of the gas and auxiliary equipment that do not need easy for installation.But owing to placing restrictions on of electromagnet and connecting rod transmission, initial angle between moving knife and the seam platform must be about 45 degree, moving knife has certain obstruction for cloth mobile like this, and this shortcoming was just obvious especially when thicker or sewing speed was fast when cloth, even sewing operation can't be carried out.Experimental results show that the moving knife and the initial angle of seam platform must be equal to or greater than the motion that 90 degree just can not hinder cloth.Also has bigger noise during work of electromagnet.Optical flame detector in the Sewing machines automatic shearing device of ZL 200520079397.4 utility model patents description is contained in the top of selvage guide plate in addition, this position hinders sewing operation sometimes, and need to paste a high reflecting material on the selvage guide plate, this block of material is easy to breakage or changes reflective characteristic under the continuous friction of cloth, thereby causes optical flame detector to lose efficacy.
Summary of the invention
The purpose of this utility model is to overcome the deficiency of existing Sewing machines automatic shearing device, and a kind of electronic thread cutter of motion Sewing machines that can not hinder cloth is provided.
The technical scheme that its technical problem that solves the utility model adopts is: the electronic thread cutter of a kind of Sewing machines, head), moving knife, selvage guide plate, stationary knife, power transmission shaft and spring comprise:, drive shaft cartridge places head one side, spring and moving knife are installed on the power transmission shaft, the selvage guide plate is arranged on the head opposite side, stationary knife is fixed on the front end of head, places selvage guide plate homonymy, it is characterized in that: described power transmission shaft links to each other with a motor.
The electronic thread cutter of the utility model Sewing machines is provided with a photoelectric sensor near the edge of a knife of described stationary knife outer end.
The electronic thread cutter of the utility model Sewing machines, the detection faces of described photoelectric sensor are not higher than the last plane of stationary knife and selvage guide plate.
The beneficial effects of the utility model are: promote because moving knife is a motor, so the anglec of rotation of moving knife without limits, torque evenly and do not have the dead point is not difficult to make initial angle between moving knife and the selvage guide plate to be equal to or greater than 90 and is spent in the whole rotation process.Thereby reach the purpose that moving knife does not hinder the cloth motion.Almost do not have noise when motor is worked in addition, working environment is preferably arranged.
Hinder sewing operation and high reflecting material damaged easily or change the deficiency of reflective characteristic for fear of optical flame detector, the utility model has been provided with a photoelectric sensor near the edge of a knife of stationary knife outer end, after sewing operation is finished, when cloth moves out the detection range of photoelectric sensor, photoelectric sensor just sends a trimming signal and gives controller, and controller is just carried out a trimming operation.The photoelectric sensing apparatus below, do not exceed the working face of stationary knife and selvage guide plate, therefore do not hinder sewing operation, do not need high reflecting material yet.
Description of drawings
Fig. 1 is the Sewing machines automatic shearing device structural map of prior art ZL 200520079397.4.
Fig. 2 is the electronic thread cutter structural map of Sewing machines of the present utility model.
Among the figure: electromagnet 1, head 2, optical flame detector 3, moving knife 4, selvage guide plate 5, stationary knife 6, power transmission shaft 7, spring 8, connecting rod 9, back-up ring 10, motor 11, photoelectric sensor 12.
The specific embodiment
Below in conjunction with drawings and Examples the utility model is further specified:
Referring to Fig. 1, the utility model is the electronic thread cutter of Sewing machines that uses on the Sewing machines in a kind of sewing device, mainly is made up of head 2, moving knife 4, selvage guide plate 5, stationary knife 6, power transmission shaft 7, spring 8, back-up ring 10, motor 11 and photoelectric sensor 12.
Described motor 11 is fixed on the installing plate on the head 2, the axle of motor 11 directly is connected with power transmission shaft 7 one ends, power transmission shaft 7 passes the axis hole of a flange on the head, and spring 8 and moving knife 4 just are installed in the other end of power transmission shaft, and back-up ring 10 places spring 8 one ends.Stationary knife 6 is fixed on the front end of head 2, and selvage guide plate 5 is fixed on the head, places stationary knife 6 homonymies, also can make one with head.Selvage guide plate 5 and power transmission shaft 7 are arranged at the both sides of head 2 respectively.Photoelectric sensor 12 is arranged near the edge of a knife of stationary knife 6 outer ends, and the detection faces of sensor is not higher than the last plane of stationary knife 4 and selvage guide plate 5, and this position does not hinder sewing operation, does not also need high reflecting material.The circuit of motor 11 and hand switch (not drawing among the figure) and photoelectric sensor 12 is connected with controller (not drawing among the figure).
Cloth covers photoelectric sensor earlier during sewing operation, sewing finishes to send when the back cloth shifts out the detection range of photoelectric sensor the trimming signal, controller is behind the trimming signal that receives hand switch or photoelectric sensor 12, control motor 11 positive turn-off beginning trimmings, controller was controlled motor 11 counter-rotatings immediately after moving knife 4 forwarded the end to, and moving knife 4 is forwarded to original position.Finish the trimming process one time.Initial angle between moving knife and the seam platform is equal to or greater than the working environment on the 90 degree back seam platforms and does not almost change as can be seen from Figure 2, and cloth can freely be pushed ahead, and also can not hinder operating personnel's work.
Claims (5)
1, the electronic thread cutter of a kind of Sewing machines, comprise: head (2), moving knife (4), selvage guide plate (5), stationary knife (6), power transmission shaft (7) and spring (8), power transmission shaft (7) is installed on head one side, spring (8) and moving knife (4) are installed on the power transmission shaft (7), selvage guide plate (5) is arranged on head (2) opposite side, stationary knife (6) is fixed on the front end of head (2), places selvage guide plate (5) homonymy, it is characterized in that: described power transmission shaft (7) links to each other with a motor (11).
2, the electronic thread cutter of a kind of Sewing machines according to claim 1 is characterized in that: near the edge of a knife of described stationary knife (6) outer end a photoelectric sensor (12) is set.
3, the electronic thread cutter of a kind of Sewing machines according to claim 2, it is characterized in that: the detection faces of described photoelectric sensor (12) is not higher than the last plane of stationary knife (4) and selvage guide plate (5).
4, according to claim 1, the electronic thread cutter of 2 or 3 described a kind of Sewing machiness, it is characterized in that motor (11) is fixed on the head (2).
5,, it is characterized in that described selvage guide plate (5) and head (2) make one according to claim 1, the electronic thread cutter of 2 or 3 described a kind of Sewing machiness.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620170962 CN200992636Y (en) | 2006-12-18 | 2006-12-18 | Electric thread trimmer for sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620170962 CN200992636Y (en) | 2006-12-18 | 2006-12-18 | Electric thread trimmer for sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200992636Y true CN200992636Y (en) | 2007-12-19 |
Family
ID=38945712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620170962 Expired - Fee Related CN200992636Y (en) | 2006-12-18 | 2006-12-18 | Electric thread trimmer for sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200992636Y (en) |
-
2006
- 2006-12-18 CN CN 200620170962 patent/CN200992636Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |