CN101565882B

CN101565882B - Skipping stitch device of sewing machine

Info

Publication number: CN101565882B
Application number: CN2008100364074A
Authority: CN
Inventors: 陈冠华
Original assignee: CHEESIANG SEWING MACHINE (SHANGHAI) Co Ltd
Current assignee: CHEESIANG SEWING MACHINE (SHANGHAI) Co Ltd
Priority date: 2008-04-21
Filing date: 2008-04-21
Publication date: 2013-12-11
Anticipated expiration: 2028-04-21
Also published as: CN101565882A

Abstract

The invention relates to a skipping stitch device of a sewing machine, which mainly comprises a fixed seat, an eccentric shaft, a rocker, a connecting rod and a deflecting control rod. The fixed seat is combined with a sewing machine body and used for sleeving the eccentric shaft and a torsional spring; the eccentric shaft is inserted into the fixed seat; the rocker is combined with one end of theeccentric shaft, and the other end of the eccentric shaft is combined with a bearded needle table by a ball-and-socket connecting rod; the connecting rod is arranged between a swinging arm on a cross shaft of the sewing machine and the rocker; and the deflecting control rod is arranged at the other end of the eccentric rod. The skipping stitch device can be provided for an operator to control a c onnecting mechanism by the deflecting control rod to drive a bearded needle to make micrometric displacement, ensures that the bearded needle cannot hook the needle and lines and easily controls the action of a skipping stitch by controlling the deflecting control rod and other automatic control modes, thereby sewing and wrapping operations can be conveniently achieved, the procedures and the timeof manual operation can be saved, and operation efficient workers can be increased.

Description

A kind of plunger pin apparatus of Sewing machines

Technical field

The present invention relates to a kind of plunger pin apparatus of Sewing machines, refer to especially in the operator and can utilize group control lever control link mechanism to drive bearded needle displacement slightly backward, bearded needle is hooked less than needlework, in order to being convenient to make the bound edge person of working continuously.

Background technology

Press, general chain order Sewing machines is to make operation for the treatment of waist of trousers head, often need to be manually the two ends suture is taken apart so that folding engages waistband.For reaching above-mentioned operation, can bearded needle be hooked less than line making end to end two ends, form the bouncing pilotage phenomenon, to save handling time and to reduce operational trouble.

And in prior art, take blowing method to reach above-mentioned bouncing pilotage purpose, its structure is to approach position, pin hole place in support below to install a blowning installation, uses the needlework normal position of blowing off, and bearded needle is hooked less than needlework, reaches the purpose of bouncing pilotage.

Just, above-mentioned way of the prior art is for can solve the bouncing pilotage problem, but need on Sewing machines, install extra blowning installation and pneumatic compression devices additional, and can be because of used suture material difference (thickness and hard and soft property), and needlework depart from normal position can't guarantee to blow the time at every turn.And when the pin position (spacing distance of pin and pin; This type Sewing machines has four pins or three pins usually) must convert blowning installation to reset the inflatable mouth position while converting simultaneously, otherwise the normal position of can't correctly needlework being blown off, make blowning installation in structural design and make more complicated and cost is high.

In sum, prior art still has technical problem to solve on this air blowing principle of utilization.

Summary of the invention

Main purpose of the present invention is to provide a kind of plunger pin apparatus of Sewing machines, refer to that the fulcrum displacement principle of utilizing linkage drives bearded needle displacement backward, for the operator can by dial control lever control do not carry out the Gou Xian district or, reach the purpose of bouncing pilotage during making.

Secondary objective of the present invention is to provide a kind of plunger pin apparatus of Sewing machines, sees through the motion path that link design can change the bearded needle tip really, can any angle during machine run be cut or the involution action.

Another object of the present invention is to provide a kind of plunger pin apparatus of Sewing machines, and the design by linkage in conjunction with the Sewing machines support is not subject to spatial limitation and applicable to the purpose of all Sewing machines supports.

For reaching above-mentioned purpose, the plunger pin apparatus that the present invention is a kind of Sewing machines, it consists predominantly of:

One holder, be incorporated into sewing machine body;

One eccentric shaft, be arranged in above-mentioned holder;

One rocking bar, be incorporated into eccentric shaft one end, and another end sees through the ball-and-socket connecting rod and is combined with the bearded needle platform;

One connecting rod, be located between the swing arm and this rocking bar on the Sewing machines transverse axis;

One group of control lever, be located at the another end of eccentric shaft.

Wherein this swing arm is provided with the guide groove for the connecting rod combination, and these rocking bar central authorities are provided with a slotted eye, and this connecting rod can be pinned between this swing arm guide groove and rocking bar slotted eye.

In a desirable embodiment, this rocking bar another end is to utilize a ball-and-socket connecting rod to be combined with the bearded needle platform.

In a possible embodiments, be provided with a torque spring between this eccentric shaft and group control lever, for being provided, this group of control lever reply location.

In a preferred embodiment, this group of control lever can link pneumatic cylinder or electromagnetic actuators, in the mode of automatically controlling, replaces and dials the control lever manual operation, can apply the action that the modes such as floor push or button are controlled bouncing pilotage more easily in order to the operator.

To sum up state, plunger pin apparatus of the present invention can reach the bouncing pilotage effect stability and greatly reduce manually-operated program, time for the operator easily by the action of control dialling control lever or other automatic control mode and control bouncing pilotage, the person that further increases the operating efficiency.

The accompanying drawing explanation

Fig. 1 is structural representation of the present invention;

Fig. 2 is decomposing schematic representation of the present invention;

Fig. 3: for Sewing machines in prior art hooks the schematic diagram that line moves;

Fig. 4: for the present invention operates the front schematic diagram of bouncing pilotage action;

Fig. 5: for the present invention operates the schematic diagram after bouncing pilotage is moved;

Fig. 6: for the present invention operates the schematic diagram compared before and after bouncing pilotage;

Fig. 7: be the generalized section after the cloth bouncing pilotage.

[primary clustering symbol description]

11. holder

12. eccentric shaft

13. rocking bar

131. slotted eye

14. connecting rod

15. dial control lever

151. torque spring

2. bearded needle seat

21. ball-and-socket connecting rod

22. bearded needle platform

23. bearded needle

24. bearded needle platform fulcrum

3. machine spindle

31. ball-and-socket connecting rod

32. transverse axis

321. swing arm

322. guide groove

4. eedle

41. pin hole

42. needlework

421. bottom line

5. cloth

A. normally make zone

B. bouncing pilotage zone

The specific embodiment

For better understanding technology contents of the present invention, the effect of using and reaching, hereby coordinate accompanying drawing to enumerate all preferred embodiments and describe in detail.

Refer to shown in Fig. 1 and 2, the plunger pin apparatus of Sewing machines of the present invention is installed in the support of Sewing machines, for support in 2 combinations of bearded needle seat, utilize the connecting rod pivot displacement to control the displacement of bearded needle 23, reach the effect of bouncing pilotage, it includes:

One holder 11, be incorporated into sewing machine body;

One eccentric shaft 12, be arranged in above-mentioned holder 11;

One rocking bar 13, be incorporated into eccentric shaft 12 1 ends, and another end sees through ball-and-

socket connecting rod

21 and 22 combinations of bearded needle platform;

One connecting rod 14, be located at 13 of swing arm 321 on Sewing machines transverse axis 32 and this rocking bars;

One group of control lever 15, be located at the another end of eccentric shaft 12.

Wherein this swing arm 321 is provided with the guide groove 322 for the connecting rod combination, and these rocking bar 13 central authorities are provided with a slotted eye 131, and this connecting rod 14 can be pinned at 131 of these swing arm 321 guide grooves 322 and rocking bar 13 slotted eyes.

In a desirable embodiment, rocking bar 13 another ends are to utilize a ball-and-

socket connecting rod

21 and 2 combinations of bearded needle seat.

In an embodiment, this eccentric shaft 12 and group 15 of control levers are provided with a torque spring 151, after 15 operations of this group of control lever are provided, can reply location.

Shown in please refer to the drawing 3, for general existing Sewing machines hooks the line action diagram.Because having Sewing machines now without adopting as link design of the present invention, only by being sheathed on the swing arm 321 of doing on transverse axis 32, directly see through ball-and-socket connecting rod 21 drive bearded needle platforms 22, so while normally making action, after arriving limit inferior point through cloth, eedle 4 starts up to move, bearded needle 23 advances while touching eedle 4, the tip location of bearded needle 23 is higher than pin hole 41 positions, so that bearded needle 23 is most advanced and sophisticated by the top of pin hole 41, the needlework in pin hole 41 is triggered.

As, after adopting the fulcrum displacement design of linkage of the present invention, the swing displaced position of bearded needle 23 will be controlled by the operator.

Shown in please refer to the drawing 4 to Fig. 6, it is operational motion schematic diagram of the present invention.The swing arm 321 be sheathed on transverse axis 32 sees through connecting rod 14 drive rocking bars 13, and rocking bar 13 sees through ball-and-socket connecting rod 21 again and drives bearded needle platforms 22.As shown in Figure 4, when normally making, because dialling control lever 15 attonitys, eccentric shaft 12 is not shifted, the relativeness that the motion of bearded needle 23 and eedle 4 keep as above-mentioned existing mechanism, hooked line according to regular event.As shown in Figure 5, when the needs bouncing pilotage, operator presses is dialled control lever 15, drive eccentric shaft 12 rotations by dialling control lever 15, rocking bar 13 is rotated in a clockwise direction because of the support of connecting rod 14, and rocking bar 13 another ends see through ball-and-socket connecting rod 21 drive bearded needle platforms 22 and bearded needle 23 (right side) skew backward, make bearded needle 23 tips leave eedle 4 one segment distances.

While turning round due to Sewing machines, eedle 4 is for moving up and down, and bearded needle 23 is synchronously hooked line for swinging towards eedle 4, after pressing as above-mentioned and dialling control lever 15 and drive bearded needle 23 tips and leave eedle 4 one segment distances, when advancing while arriving eedle 4 in bearded needle 23 tips, eedle 4 oneself to top offset, pin hole 41 positions are higher than bearded needle 23 tips, bearded needle 23 tips, only by the below of pin hole 41 positions, form bouncing pilotage and hook less than the meter line, shown in figure 6.

As shown in Figure 7, the direction of arrow is for making direction, wherein the A section is for normally making zone, can see and because of eedle 4, through cloth 5 meetings, because the hook line moves, make needlework 42 form the chain order through cloth 5 and with bottom line 421, and the B section makes bearded needle 23 can't hook needlework 42 for pressing group control lever 15, because needlework 42 are drawn out again through cloth 5 afterwards, formed bouncing pilotage.

Another embodiment of the present invention can connect pneumatic cylinder or electromagnetic actuators by dialling control lever 15, replace and dial the control lever manual operation in the mode of automatically controlling, can apply the action (not shown) that the modes such as floor push or button are controlled bouncing pilotage more easily in order to the operator.

The above, be only the better embodiment of the present invention, when not limiting practical range of the present invention with this, the simple equivalence of generally doing according to the present patent application the scope of the claims and description changes and modifies, and all should still remain within the scope of the patent.

Claims

1. the plunger pin apparatus of a Sewing machines, it includes:

One holder (11), be incorporated into sewing machine body;

One eccentric shaft (12), be arranged in above-mentioned holder (11);

One rocking bar (13), be incorporated into eccentric shaft (12) one ends, and another end sees through ball-and-socket connecting rod (21) and bearded needle platform (22) combination;

One connecting rod (14), be located between the swing arm (321) and this rocking bar (13) on Sewing machines transverse axis (32);

One group of control lever (15), be located at the another end of eccentric shaft (12).

2. the plunger pin apparatus of a kind of Sewing machines according to claim 1, it is characterized in that: wherein this swing arm (321) is provided with the guide groove (322) for the connecting rod combination, this rocking bar (13) central authorities are provided with a slotted eye (131), and this connecting rod (14) can be pinned between this swing arm (321) guide groove (322) and rocking bar (13) slotted eye (131).

3. the plunger pin apparatus of a kind of Sewing machines according to claim 1 and 2 is characterized in that: wherein this rocking bar (13) extension another end is utilized a ball-and-socket connecting rod (21) and bearded needle platform (22) combination.

4. the plunger pin apparatus of a kind of Sewing machines according to claim 1 and 2, is characterized in that: wherein between this eccentric shaft (12) and group control lever (15), be provided with a torque spring (151).

5. the plunger pin apparatus of a kind of Sewing machines according to claim 1 and 2, it is characterized in that: wherein this group of control lever (15) can link pneumatic cylinder.

6. the plunger pin apparatus of a kind of Sewing machines according to claim 1, it is characterized in that: wherein this group of control lever (15) can link electromagnetic actuators.