CN201433294Y

CN201433294Y - Automatic thread trimming device of sewing trousers-bottom machine

Info

Publication number: CN201433294Y
Application number: CN2009201279543U
Authority: CN
Inventors: 李华
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-07-08
Filing date: 2009-07-08
Publication date: 2010-03-31
Anticipated expiration: 2019-07-08

Abstract

The utility model discloses to an automatic thread trimming device of a sewing trousers-bottom machine relating to a mechanical sewing machine, an air cylinder telescopic rod (9) with outer threads ofthe air cylinder (1) is sequentially meshed with a nut B (10), a nut C (5) and a nut D (6), an end-ring of a thread-withdrawing rod (8) is sleeved at the air cylinder telescopic rod (9) between the nut B (10) and the nut C (5), the air cylinder telescopic rod (9) between the nut C (5) and the nut D (6) passes through a vertical plate hole of an L-shaped fixed scissors board (11), a bolt B (13) passes through the hole of an upper scissor sheet (15) and the hole of a lower scissor sheet (14) to be meshed with inner screw threads of a horizontal-plate hole, a rivet (12) passes through the hole of the upper scissor sheet (15), the arc-shaped slotted hole of the lower scissor sheet (14) to rear-rivet with another hole of the horizontal-plate; one arm of the L-shaped lower scissor sheet (14) isprovided with cutting edge, the hole at another arm plate is provided with a guide column (7), the guide column (7) is inserted in a rectangular slotted hole at front end of a guide locating slottedplate (16). The automatic thread trimming device has the advantages of simple and compact structure, convenient manufacturing and assembling, simple and practical operation; and the utility model facilitates increasing production efficiency and the like.

Description

The automatic cutting facility of going up of sewing bottom of s trouser leg machine

One, technical field

The utility model relates to the mechanical type Sewing machines, especially a kind of automatic cutting facility of going up of the bottom of s trouser leg machine of sewing.

Two, background technology

In when sewing, to cut off sewing thread at any time, the most original way is lifted out earlier flipper, down draws with the hand cloth of will sewing, and with scissors line is cut off again, exists time-consuming weak point.

Also there is the hook of employing line cutter to come trimming mechanical structure at present, exists the easy snap the line of the line of cutting off, cause line to deviate from, the deficiency of influence operation from pin hole.

Three, summary of the invention

The purpose of this utility model provides a kind of simple in structure, can automatic thread trimming device on sewing bottom of s trouser leg machine.

The technical scheme that order of the present utility model adopted is, including cylinder has externally threaded urceolus to pass the hole and the nut A engagement of mount pad, bolt A passes stomidium and the engagement of mount pad side plate hole internal thread behind the guide-localization frid, conductor rod, its described cylinder have externally threaded cylinder expansion link successively with nut B, nut C and nut D engagement, on cylinder expansion link bar between nut B and the nut C, be with and move back line bar one end circle hole, pass the perpendicular holes that is L type fixed blade plate between nut C and the nut D on the cylinder expansion link bar, bolt B is passed hole and the hole of lower scissors sheet and the horizontal plate hole internal thread engagement of fixed blade plate of shear blade, rivet passes the hole of shear blade, the level board of the arc-shaped slot of lower scissors sheet and fixed blade plate is riveted behind another hole, L-shaped lower scissors sheet one arm has cutting edge, in the hole lead is housed on another arm plate, lead inserts in the rectangle slotted eye of guide-localization frid front end.

The course of work of the present utility model: when the cylinder expansion link of cylinder stretches out, driving the fixed blade plate also moves forward, on the fixed blade plate, there is the lower scissors sheet lead to be housed also along with moving forward, when lead moves on to the rectangular slot Kongzui front of guide-localization frid, be subjected to spacing, and the cylinder expansion link continue spray to before, forcing the lower scissors sheet is that rotate in the center of circle with the bolt B, the cutting edge of lower scissors sheet one arm cutting edge and last shear blade is cut off sewing thread, and upper and lower cutting edge is containing sewing thread and cutting off the upper end; During the withdrawal of cylinder expansion link, drive the fixed blade plate moves backward, when behind lower scissors lead on chip, moving on to the rectangular slot Kongzui back of guide groove plate, be subjected to spacing, and the cylinder expansion link is after spraying to, forcing the lower scissors sheet is that rotate in the center of circle with the bolt B, and lower scissors sheet and last shear blade two cutting edges are opened, and decontrols sewing thread and cuts off the upper end; Rivet is along lower scissors sheet arc groove hole back and forth movement.

The utlity model has simple and compact for structurely, make easy to assembly easy and simple to handlely, practicality helps improve producing characteristics such as effect.

Four, description of drawings

Further specify the utility model below in conjunction with accompanying drawing.

Accompanying drawing is the utility model perspective view.

Among the figure: 1-cylinder 2-mount pad 3-nut A 4-bolt A 5-nut C 6-nut D 7-lead 8-moves back line bar 9-cylinder expansion link 10-nut B 11-fixed blade plate 12-rivet 13-bolt B 14-lower scissors sheet 15-and goes up shear blade 16-guide-localization frid

Five, the specific embodiment

As shown in drawings, including cylinder 1 has externally threaded urceolus to pass the hole and the nut A3 engagement of mount pad 2, bolt A4 passes guide-localization frid 16 back stomidiums and mount pad 2 side plate hole internal thread engagements, conductor rod 8, its described cylinder 1 have externally threaded cylinder expansion link 9 successively with nut B10, nut C5 and nut D6 engagement, on cylinder expansion link 9 bars between nut B10 and the nut C5, be with and move back line bar 8 one end circle holes, pass the perpendicular holes that is L type fixed blade plate 11 between nut C5 and the nut D6 on cylinder expansion link 9 bars, bolt B 13 is passed hole and the hole of lower scissors sheet 14 and the horizontal plate hole internal thread engagement of fixed blade plate 11 of shear blade 15, rivet 12 passes the hole of shear blade 15, the level board of the arc-shaped slot of lower scissors sheet 14 and fixed blade plate 11 is riveted behind another hole, L-shaped lower scissors sheet 14 1 arms have cutting edge, in the hole lead 7 is housed on another arm plate, lead 7 inserts in the rectangle slotted eye of guide-localization frid 16 front ends.

Claims

1, a kind of automatic cutting facility of going up of the bottom of s trouser leg machine of sewing, including cylinder (1) has externally threaded urceolus to pass the hole and nut A (3) engagement of mount pad (2), bolt A (4) passes guide-localization frid (16) back stomidium and the engagement of mount pad (2) side plate hole internal thread, conductor rod (8), it is characterized in that: described cylinder (1) have externally threaded cylinder expansion link (9) successively with nut B (10), nut C (5) and nut D (6) engagement, on cylinder expansion link (9) bar between nut B (10) and the nut C (5), be with and move back line bar (8) one end circle holes, pass the perpendicular holes that is L type fixed blade plate (11) on cylinder expansion link (9) bar between nut C (5) and the nut D (6), bolt B (13) is passed hole and the hole of lower scissors sheet (14) and the horizontal plate hole internal thread engagement of fixed blade plate (11) of shear blade (15), rivet (12) passes the hole of shear blade (15), rivet behind another hole of level board of the arc-shaped slot of lower scissors sheet (14) and fixed blade plate (11), L-shaped lower scissors sheet (14) one arms have cutting edge, lead (7) is housed in the hole on another arm plate, and lead (7) inserts in the rectangle slotted eye of guide-localization frid (16) front end.