CN2184705Y

CN2184705Y - Computer control sewing machine presser feet device structure

Info

Publication number: CN2184705Y
Application number: CN 93225973
Authority: CN
Inventors: 陈满雄
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-06-28
Filing date: 1993-06-28
Publication date: 1994-12-07
Anticipated expiration: 2003-06-28

Abstract

The utility model relates to a new structure of a computer control sewing machine presser feet device whose power is controlled by a computer. The utility model is composed of a magnetic drum, a connecting rod set, a slide plate, presser feet, etc. The composite design of the connecting rod set and a crank arm is used as a pressure transmission system to achieve the stable transmission of the pressure. The principle of the dead center of the mechanics is utilized, and thus a press plate of the utility model can maintain an absolute stability after the pressure is transferred.

Description

Computer control sewing machine presser feet device structure

The utility model belongs to sewing-machine foot, and particularly a kind of power is by the sewing-machine foot device neotectonics of computer control.

" presser feet " is the total device of Sewing machines, and so-called " presser feet " is meant Sewing machines in making clothing, and before suture needle did not sew up working substance, the position that working substance is suitable compressed earlier, the device of making in order to suture needle.Traditional sewing-machine foot device as shown in Figure 1, when connecting rod A is subjected to the power of electromagnetism and spring B is pressurizeed, the slide plate frame C that is contained in spring end is pressed down, thereby force the slide plate D that is packed on this slide plate frame C to press down, presser feet E system is packed on the slide plate D, therefore presser feet E just produces the pressure to working substance, this kind device is no doubt very simple, but its shortcoming is: common Sewing machines is subject to subjective condition, be difficult to the power that provides enough, certainly will cause insufficient pressure that presser feet produces or stable inadequately like this, that causes that working substance has that the part can dash by suture needle to draw repeatedly involves and slides, and makes the uneven phenomenon of the place of making generation, the quality that thing is made in influence, next is that spring no doubt can play cushioning effect as pressure delivery system, but it makes the pressure of transmission that wild effect is arranged unavoidably, and this also can influence the quality of making thing.

The purpose of this utility model is to provide a kind of sewing-machine foot device neotectonics of computer control, and it can overcome the weak point that prior art exists.

According to the utility model purpose, the scheme that the inventor solves is as pressure delivery system by connection rod set and the Combination Design of cranking arm, realize the stable delivery of pressure, and utilize dead point principle on the mechanics to make this structure can be after pressure is finished transmission, keep the absolute stability of pressure, thereby realized the utility model purpose.Compared with prior art, the utility model structure is more scientific and reasonable.This new construction does not need too big power can guarantee that there are enough big and absolute stable pressure in the presser feet place concerning Sewing machines, slides thereby overcome the working substance that produces owing to insufficient pressure and instability in the prior art, and the phenomenon of article matter is made in influence.

Below by embodiment and accompanying drawing the utility model structure is described.

Fig. 1 is the foot device of traditional Sewing machines

Fig. 2 is the front view of the utility model structure

Fig. 3 is the upward view of the utility model structure

With reference to Fig. 2, the utility model is by magnetic drum 1, magnetic drum connecting rod 2, and cross bar 3, brute spring 4 cranks arm 5, connecting rod 6, bent connecting rod 7, slide plate 8, presser feet 9 constitutes.The effect power supply of magnetic drum 1 is controlled by computer, and when magnetic drum 1 energising, the coil in it produces magnetic force, and toward pressing down, the right-hand member of the lower end of this magnetic drum connecting rod 2 and cross bar 3 is movably connected, thereby the right-hand member of cross bar 3 is moved down with magnetic drum connecting rod 2, and left end then rises.Brute spring 4 upper ends link to each other with cross bar 3 left ends, and the lower end then 5 links to each other with cranking arm, brute spring 4 powerful quite big, and in fact dilatability is very little in running, is close in a connecting rod, just then has slow weighing apparatus property than connecting rod, and the effect of slow weighing apparatus foot pressure is arranged.When brute spring 4 upper ends be subjected to direct-connected cross bar 3 left end power and on when carrying, just will crank arm in the lower end 5 is center and clockwise rotating slightly with fulcrum 51.The right-hand member of 5 left ends and connecting rod 6 of cranking arm is movably connected in tie point 61, when this tie point 61 moves on gradually, then promotes bent connecting rod 7, is that the center is done counterclockwise to rotate with 71.The left end 72 and the slide plate 8 of bent connecting rod 7 are movably connected, when the left end 72 of bent connecting rod 7 when pressing down, just drive slide plate 8 toward pressing down, the below of slide plate 8 and presser feet 9 are fixedly linked, this presser feet 8 as can be seen from Figure 3 is a square box-shaped body, the part that the work material desire is made promptly is pressed in this square box, when presser feet is pressing working substance, crank arm 5 with connecting rod 6 state in line, this kind state is the suitable dead point that becomes on the mechanics for the clockwise direction rotation of bent connecting rod 7, can't rotate extremely, though so presser feet little for the press power of working substance, very stable, and for Sewing machines, do not need too big power yet, just can reach the effect of pressure stability, this just the utility model be different from the effect of prior art.

In case working substance will be shifted one's position, magnetic drum 1 is subjected to computer control power interruptions, loses magnetic force, and magnetic drum connecting rod 2 is lost downforce, and 5 lower ends of cranking arm this moment are subjected to the pulling force of spring 10, and make its left end decontrol the pressure of 9 pairs of working substances of presser feet to moving down.

Claims

A kind of power is by the sewing-machine foot device neotectonics of computer control, its formation comprises magnetic drum (1), magnetic drum connecting rod (2), slide plate (8), presser feet (9), it is characterized in that it also comprises cross bar (3), brute spring (4), crank arm (5), connecting rod (6), bent connecting rod (7), magnetic drum connecting rod (2) is movably connected with an end of cross bar (3), the other end of cross bar (3) is movably connected with brute spring (4) and crank arm (5), the crank arm left end of (5) and the right-hand member of connecting rod (6) is movably connected, when crank arm (5) are subjected to the power of brute spring (4) and carry gradually, make and crank arm (5) and connecting rod (6) when gradually becoming straight line in line, the left end (72) of bent connecting rod (5) also gradually drives presser feet (9) and presses down.