JPH0179477U

JPH0179477U -

Info

Publication number: JPH0179477U
Application number: JP1987174192U
Authority: JP
Priority date: 1987-11-13
Filing date: 1987-11-13
Publication date: 1989-05-29

Description

[Brief explanation of the drawing]

第１図はこの考案の実施例による糸切り装置の
平面図、第２図は同装置の側面図、第３図は針板
と糸切り装置の位置関係を説明するための拡大平
面図、第４図は第３図の―線に沿う断面図、
第５図及び第６図は作用を説明するための断面図
、第７図は上記糸切り装置を縦筒ミシンに取り付
けた例を示す概略斜視図、第８図は従来の糸切り
装置が取り付けられたミシンの斜視図である。２……固定メス、４……縦軸、５……可動メス
、６……可動メスの基端部、７……糸掛け部、８
……押えばね、１０……針板、１１……縫い糸、
１２……ルーパ、１００……縦筒ミシン。 FIG. 1 is a plan view of a thread cutting device according to an embodiment of the invention, FIG. 2 is a side view of the same device, FIG. 3 is an enlarged plan view for explaining the positional relationship between the throat plate and the thread cutting device, and FIG. Figure 4 is a cross-sectional view taken along the - line in Figure 3;
5 and 6 are cross-sectional views for explaining the operation, FIG. 7 is a schematic perspective view showing an example in which the above-mentioned thread trimming device is attached to a vertical tube sewing machine, and FIG. 8 is a conventional thread trimming device attached. FIG. 2... Fixed knife, 4... Vertical shaft, 5... Movable knife, 6... Base end of movable knife, 7... Threading part, 8
...If you press it, 10...throat plate, 11...sewing thread,
12...Loopa, 100...Vertical tube sewing machine.

Claims

[Scope of utility model registration request]

a fixed knife disposed near the throat plate and facing from the side a passage path of the sewing thread passing through the throat plate;
The proximal end is supported by a vertical shaft provided at the bottom of the throat plate, and the needle plate and the looper at the bottom thereof reciprocate about the vertical axis between the mutual positions and the position corresponding to the fixed knife. A movable scalpel that swings,
The movable knife is equipped with a pressing spring that presses the movable knife toward the fixed knife, and when the movable knife is moved forward, it holds the passing path of the sewing thread, and when it is moved back, the thread hooking part that overlaps with the fixed knife is held at the tip. A thread cutting device for a sewing machine, characterized in that it has an inner thread cutting device.