CN105332172A - Thread loosening device - Google Patents
Thread loosening device Download PDFInfo
- Publication number
- CN105332172A CN105332172A CN201510784108.9A CN201510784108A CN105332172A CN 105332172 A CN105332172 A CN 105332172A CN 201510784108 A CN201510784108 A CN 201510784108A CN 105332172 A CN105332172 A CN 105332172A
- Authority
- CN
- China
- Prior art keywords
- top board
- thread
- loose ends
- electromagnet
- loosening
- 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.)
- Pending
Links
Classifications
-
- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B47/00—Needle-thread tensioning devices; Applications of tensometers
- D05B47/04—Automatically-controlled tensioning devices
Abstract
The invention belongs to the technical field of sewing accessories and in particular relates to a thread loosening device. The device comprises a thread loosening ejector plate capable of rotating around a rotating shaft, an electromagnet, and thread loosening auxiliary nails used for opening a thread clamper for loosening threads, wherein the iron core of the electromagnet is collinear or parallel to the axis of the thread loosening auxiliary nails; the thread loosening ejector plate can be respectively driven by a presser foot lifting device or the electromagnet to rotate around the rotating shaft so as to drive the thread loosening auxiliary nails to open the thread clamper for performing the thread loosening action; and the action of the electromagnet is controlled by a controller. According to the presser foot lifting device and the electromagnet, the thread loosening ejector plate can be driven to rotate around shoulder screws for opening the thread clamper so as to realize the thread loosening operation, presser foot lifting drive and electromagnet drive are independent from each other and do not influence each other; and moreover, the performance is stable, the thread trimming length is consistent, the quality of a sewing machine is improved, and the device is applied to various lockstitch sewing machines.
Description
Technical field:
The invention belongs to Sewing machines accessory technical field, refer in particular to a kind of thread-loosening device.
Background technology:
Sewing machines is generally all provided with tension disk.The effect of tension disk is that upper thread clamps by tension disk when Sewing machines works, and makes upper thread have suitable elasticity; After sewing terminates, during automatic shearing, tension disk can not unclamp automatically, then need to arrange thread-loosening device control tension disk and automatically unclamp.In prior art, what thread-loosening device adopted is guy structure.This structure also exists: unstable, makes when trimming different in size, reduces the weak points such as the quality of Sewing machines.
Summary of the invention:
The object of this invention is to provide a kind of stable performance, all can realize the thread-loosening device of loose ends action when presser foot lifter or trimming.
The present invention is achieved in that
A kind of thread-loosening device, include the loose ends top board that can rotate around the axis, electromagnet and be used for backing down the auxiliary nail of loose ends that tension disk carries out loose ends, the axis collinear of the iron core of electromagnet and the auxiliary nail of loose ends or be arranged in parallel, loose ends top board can be rotated around the axis by presser foot lifting device or solenoid actuated respectively and then drive the auxiliary screw top open tension device of loose ends to carry out loose ends action, and the action of electromagnet is controlled by controller.
Above-mentioned loose ends top board be hollow circular cylinder external cylindrical surface on be provided with top board one and top board two, top board one is arranged on above the presser feet lifter plate of presser foot lifting device, and top board two is arranged between the auxiliary nail of loose ends and the iron core of electromagnet.
The baseplane of above-mentioned top board one contacts with the presser feet lifter plate of presser foot lifting device and connects.
One side plane of above-mentioned top board two touch with the auxiliary nail joint of loose ends connect, opposite side plane contacts with the iron core of electromagnet and connects.
The side of above-mentioned loose ends top board is provided with resetting means.
Above-mentioned resetting means is: the spring suspension screw being arranged on rotating shaft side, and spring suspension screw axis is parallel with shaft axis, and spring suspension screw is arranged with reduction torsion spring, and one end of reduction torsion spring holds out against on loose ends top board.
Above-mentioned rotating shaft is axial screw, and loose ends top board is arranged on casing by axial screw.
One end of above-mentioned spring suspension screw is arranged on casing.
The advantage that the present invention gives prominence to compared to existing technology is:
1, the present invention all can drive loose ends top board back down tension disk around axial screw rotation thus realize loose ends by presser foot lifting device and electromagnet, and presser foot lifter drives and electromagnet drives as separate, is independent of each other;
2, the present invention adopts spring reset, and noise is little;
3, stable performance of the present invention, trimming length is consistent, improves the quality of Sewing machines, is applicable in various flat seam machine.
Accompanying drawing illustrates:
Fig. 1 is the schematic diagram after the present invention installs;
Fig. 2 is the schematic diagram after the present invention installs rear dismounting presser feet;
Fig. 3 be top board one of the present invention be arranged on presser foot lifting device presser feet lifter plate above one of schematic diagram;
Fig. 4 be top board one of the present invention be arranged on presser foot lifting device presser feet lifter plate above schematic diagram two;
Fig. 5 is one of schematic diagram of loose ends top board of the present invention;
Fig. 6 is the schematic diagram two of loose ends top board of the present invention.
Detailed description of the invention:
With specific embodiment, the invention will be further described below, see Fig. 1-6:
A kind of thread-loosening device, include the loose ends top board 10 that can rotate around the axis, electromagnet 20 and be used for backing down the auxiliary nail 40 of loose ends that tension disk 30 carries out loose ends, the iron core 201 of electromagnet 20 is with the axis collinear of the auxiliary nail 40 of loose ends or be arranged in parallel, loose ends top board 10 can be driven to rotate around the axis and then drive the auxiliary nail 40 of loose ends to back down tension disk 30 by presser foot lifting device 50 or electromagnet 20 respectively and carry out loose ends action, and the action of electromagnet 20 is controlled by controller.Presser foot lifting device 50 or electromagnet 20 drive loose ends top board 10 to be separate action, non-interference.In the auxiliary nail installing hole of the loose ends being arranged on casing 70 of the auxiliary nail of loose ends 40, the tension releasing pin 301 of top, one end tension disk 30 of the auxiliary nail 40 of loose ends.
Above-mentioned loose ends top board 10 be hollow circular cylinder 103 external cylindrical surface on be provided with top board 1 and top board 2 102, top board 1 is arranged on above the presser feet lifter plate 501 of presser foot lifting device 50, top board 2 102 is arranged between the auxiliary nail 40 of loose ends and the iron core 201 of electromagnet 20, and the hole of hollow circular cylinder 103 is loose ends top board 10 and is arranged on installing hole on axial screw.Top board 1 and top board 2 102 are integral type structure, one-body molded with hollow circular cylinder 103.Angle angle between top board 1 and top board 2 102 can design according to actual conditions.
The baseplane of above-mentioned top board 1 contacts with the presser feet lifter plate 501 of presser foot lifting device 50 and connects.
One side plane of above-mentioned top board 2 102 contact with the auxiliary nail 40 of loose ends connect, opposite side plane contacts with the iron core 201 of electromagnet 20 and connects.
The side of above-mentioned loose ends top board 10 is provided with resetting means.
Above-mentioned resetting means is: the spring suspension screw 60 being arranged on rotating shaft side, and spring suspension screw 60 axis is parallel with shaft axis, and spring suspension screw 60 is arranged with reduction torsion spring, and one end of reduction torsion spring holds out against on loose ends top board 10.Reduction torsion spring automatically resets after loose ends top board 10 can be made to rotate at every turn, and noise is little.
Above-mentioned rotating shaft is axial screw, and loose ends top board 10 is arranged on casing 70 by axial screw.
One end of above-mentioned spring suspension screw 60 is arranged on casing 70.
Operation principle of the present invention:
1, when presser foot lifter, by portable presser foot lifter handle or when carrying out presser foot lifter action by knee control device presser foot lifter or the drive of other devices, presser feet lifter plate 501 on presser foot lifting device 50 can move up, because top board 1 is arranged on above presser feet lifter plate 501, presser feet lifter plate 501 gives one 101 one, top board power upwards in upper process of moving, namely loose ends top board can rotate counterclockwise around axial screw, top board 2 102 is driven to push up the auxiliary nail 40 of loose ends, the tension releasing pin 301 of the other end top tension disk 30 of the auxiliary nail 40 of loose ends, and then realize the action of loose ends;
2, when electric cabinet controls Sewing machines trimming, electromagnet 20 is energized, in the plane of the protruding top board 2 102 acting on loose ends top board 10 of iron core 201 of electromagnet 20, top board 2 102 drives loose ends top board 10 to rotate counterclockwise, because top board 1 is arranged on above presser feet lifter plate 501, when loose ends top board 10 rotates counterclockwise, top board 1 is in reverse to presser feet lifter plate 501 and moves and can not act on presser feet lifter plate 501, to presser foot lifting device 50 without interference, top board 2 102 pushes up the auxiliary nail 40 of loose ends, the auxiliary nail 40 of loose ends pushes up the tension releasing pin 301 of tension disk 30, and then realize the action of loose ends.
Claims (8)
1. a thread-loosening device, it is characterized in that: include the loose ends top board that can rotate around the axis, electromagnet and be used for backing down the auxiliary nail of loose ends that tension disk carries out loose ends, the axis collinear of the iron core of electromagnet and the auxiliary nail of loose ends or be arranged in parallel, loose ends top board can be rotated around the axis by presser foot lifting device or solenoid actuated respectively and then drive the auxiliary screw top open tension device of loose ends to carry out loose ends action, and the action of electromagnet is controlled by controller.
2. a kind of thread-loosening device according to claim 1, it is characterized in that: described loose ends top board be hollow circular cylinder external cylindrical surface on be provided with top board one and top board two, top board one is arranged on above the presser feet lifter plate of presser foot lifting device, and top board two is arranged between the auxiliary nail of loose ends and the iron core of electromagnet.
3. a kind of thread-loosening device according to claim 2, is characterized in that: the baseplane of described top board one contacts with the presser feet lifter plate of presser foot lifting device and connects.
4. a kind of thread-loosening device according to claim 2, is characterized in that: a side plane of described top board two touch with the auxiliary nail joint of loose ends connect, opposite side plane contacts with the iron core of electromagnet and connects.
5. a kind of thread-loosening device according to claim 1, is characterized in that: the side of described loose ends top board is provided with resetting means.
6. a kind of thread-loosening device according to claim 5, it is characterized in that: described resetting means is: the spring suspension screw being arranged on rotating shaft side, spring suspension screw axis is parallel with shaft axis, spring suspension screw is arranged with reduction torsion spring, and one end of reduction torsion spring holds out against on loose ends top board.
7. a kind of thread-loosening device according to claim 1 or 6, is characterized in that: described rotating shaft is axial screw, and loose ends top board is arranged on casing by axial screw.
8. a kind of thread-loosening device according to claim 6, is characterized in that: one end of described spring suspension screw is arranged on casing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510784108.9A CN105332172A (en) | 2015-11-09 | 2015-11-09 | Thread loosening device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510784108.9A CN105332172A (en) | 2015-11-09 | 2015-11-09 | Thread loosening device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105332172A true CN105332172A (en) | 2016-02-17 |
Family
ID=55282921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510784108.9A Pending CN105332172A (en) | 2015-11-09 | 2015-11-09 | Thread loosening device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105332172A (en) |
-
2015
- 2015-11-09 CN CN201510784108.9A patent/CN105332172A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160217 |
|
| WD01 | Invention patent application deemed withdrawn after publication |