CN2179395Y - Dual-needle chain sewing machine - Google Patents

Abstract

The utility model relates to a dual-needle chain sewing machine, which is mainly composed of the drive mechanism of a chain thread curved needle, a drive mechanism of wire carding, a feeding mechanism, a drive mechanism of a needle bar, a press foot mechanism, and a thread passing mechanism of curved and straight needles. The utility model is characterized in that two needle frames are installed on a shaft of a chain line curved needle and are respectively provided with a curved needle; two thread passing tubes and two press line devices are arranged on the thread passing mechanism of the curved needle and are in mutually parallel installation on a machine base. The constant movement of two straight needles on a needle bar and two curved needles on the shaft of the chain line curved needle form two rows of 401 thread tracks. The utility model is suitable for flat sewing intermediate and thin materials in double-row and sewing sleeves.

Description

Dual-needle chain sewing machine

The utility model relates to a kind of sewing mechanical equipment.

At present, with the immediate product of the utility model be that the our factory produces " a kind of simple and easy crosspointer flat seaming machine " (number of patent application: 932331467), it is by support, main shaft, flywheel, chain line looper swing mechanism and travel mechanism, stroke line transmission mechanism, feed mechanism, transmission mechanism for needle bar, presser foot device, looper is crossed line mechanism, eedle is crossed formations such as line mechanism, main shaft rotates under external force traction with flywheel, drive each transmission mechanism and do continuous motion, finish the thorn material, collude line, actions such as feeding, make continuously by a bite looper on two mouthfuls of staight needles on the shank and the chain line curved needle shaft, form one 406 stitching, this product is mainly used in the press strip of knitted underwear trousers, roll neck, sew up etc.

Task of the present utility model provides the sewing mechanical equipment that the thin property sewing of a kind of centering is made the usefulness of duplicate rows chain-type stitch flush joint and last sleeve.

Task of the present utility model is finished like this: the utility model by support, main shaft, flywheel, chain line looper swing mechanism and travel mechanism, stroke that line transmission mechanism, feed mechanism, transmission mechanism for needle bar, presser foot device, looper are crossed line mechanism, eedle is crossed line mechanism etc. and constituted, it is characterized in that: two punch blocks one in front and one in back are installed on the chain line curved needle shaft, looper is housed respectively above; Wire-passing tube, wire pressing device that looper is crossed line mechanism respectively have two, and parallel to each other being installed on the support.Successive motion by two mouthfuls of loopers on two mouthfuls of staight needles on the shank and the chain line curved needle shaft forms two row, 401 stitchings.

The utility model is to go up improved a kind of new Sewing machines type at " a kind of simple and easy crosspointer flat seaming machine ", its cost is low, simple in structure, handsome in appearance, easy for operation, is applicable to that mainly the thin property sewing of centering is made duplicate rows chain-type stitch flush joint and alternative cuff sewing machine is made the upward usefulness of sleeve.

Fig. 1 is the utility model outline drawing;

Fig. 2 is the utility model chain line looper oscillating machine composition;

Fig. 3 is the figure of the utility model chain line looper travel mechanism;

Fig. 4 strokes line transmission mechanism figure for the utility model;

Fig. 5 is the utility model feeder composition;

Fig. 6 is the utility model transmission mechanism for needle bar figure;

Fig. 7 is the utility model presser foot device figure;

Fig. 8 crosses line mechanism figure for the utility model looper;

Fig. 9 crosses line mechanism figure for the utility model eedle;

The utility model is described in further detail below in conjunction with accompanying drawing.

As shown in Figure 1, support ［ 1 ］, flywheel ［ 2 ］, oil shield ［ 3 ］, needle plate ［ 4 ］,

Seam platform ［ 5 ］ constitutes the basic profile of this machine.

Shown in Fig. 2,3, chain line looper swing mechanism is in series by main shaft ［ 6 ］, last pin crank ［ 7 ］, last pin connecting rod ［ 8 ］, steel marble ［ 10 ］, driving crank ［ 12 ］, crank connecting link ［ 13 ］, driven crank ［ 15 ］, chain line curved needle shaft ［ 16 ］, looper frame ［ 17 ］, looper ［ 18 ］ etc., be arranged between main shaft ［ 6 ］ left end head (needle end is the main shaft left end, and the flywheel end is the main shaft right-hand member) and the chain line curved needle shaft ［ 16 ］.Last pin connecting rod ［ 8 ］ two spherical pore centre-to-centre spacing are 27mm, and the centre is equipped with and is only put chuck ［ 9 ］, prevent that steel marble ［ 10 ］ from swinging; Drive crank ［ 12 ］ centre bore and be contained on the punch block axle ［ 11 ］, can swing up and down around axle, last punch block axle ［ 11 ］ center and main shaft ［ 6 ］ centre distance are 27.1mm; Crank connecting link ［ 13 ］ by crank-pin ［ 14 ］, is installed in the open slot that drives crank ［ 12 ］, and can endwisely slips along crank-pin ［ 14 ］, and sliding distance is 1.5～3.5mm, and the centre-to-centre spacing between crank connecting link ［ 13 ］ two holes is 12～28mm; Centre-to-centre spacing between driven crank ［ 15 ］ two holes is 14～30mm; One in front and one in back be fixed with two looper framves ［ 17 ］ on the chain line curved needle shaft ［ 16 ］, chain line looper ［ 18 ］ is housed respectively above, the longitudinal separation between two mouthfuls of loopers ［ 18 ］ through wires hole center line is 3～7mm, about the distance be 4～8mm.When last pin crank ［ 7 ］ rotates with main shaft ［ 6 ］, by last pin connecting rod ［ 8 ］, steel marble ［ 10 ］, driving driving crank ［ 12 ］ swings up and down around last punch block axle ［ 11 ］, again by crank connecting link ［ 13 ］, driven crank ［ 15 ］, two looper framves ［ 17 ］ and looper ［ 18 ］ that driving is fastened on the chain line curved needle shaft ［ 16 ］ swing, and the output angle of chain line looper swing mechanism is 11 °～31 °.

Chain line looper travel mechanism is by main shaft ［ 6 ］, feeding cam ［ 20 ］, swing connecting bar assembly ［ 21 ］, wobble crank ［ 23 ］, wobble crank connecting axle ［ 22 ］, small rod axle ［ 24 ］, small rod ［ 25 ］, small rod slide block ［ 26 ］, chain line curved needle shaft ［ 16 ］, looper frame ［ 17 ］, looper ［ 18 ］ constitutes, feeding cam on the main shaft ［ 20 ］ rotates with main shaft ［ 6 ］, by swing connecting bar assembly ［ 21 ］ and wobble crank connecting axle ［ 22 ］, wobble crank ［ 23 ］ is swung around small rod axle ［ 24 ］ axis, because wobble crank ［ 23 ］, small rod axle ［ 24 ］ and small rod ［ 25 ］ are connected as a single entity by screw, small rod ［ 25 ］ is also swung around small rod axle ［ 24 ］ axis, small rod ［ 25 ］ promotes chain line curved needle shaft ［ 16 ］ again by small rod slide block ［ 26 ］, two looper framves ［ 17 ］ and two mouthfuls of loopers ［ 18 ］ axially move back and forth.

Chain line looper swing mechanism and travel mechanism constitute chain line looper transmission mechanism, the left and right sides reciprocally swinging of chain line looper ［ 18 ］ and axially move back and forth to intersect simultaneously and carry out.

As shown in Figure 4, stroke line transmission mechanism by main shaft ［ 6 ］, stroke line cam ［ 28 ］, looper line crossing bracket ［ 27 ］ is formed.Stroke line cam ［ 28 ］ and be fastened on main shaft ［ 6 ］ left end, looper line crossing bracket ［ 27 ］ is fixed on the support ［ 1 ］, and main shaft ［ 6 ］ when rotation, pine when tight is finished and strokes the line function when stroking line cam ［ 28 ］ and making by the suture on the looper line crossing bracket ［ 27 ］.

As shown in Figure 5, feed mechanism by main shaft ［ 6 ］, feeding cam ［ 20 ］, connecting rod ［ 30 ］, connecting pin ［ 29 ］, regulate crank ［ 31 ］, feed spool ［ 32 ］, crank of tooth frame ［ 33 ］, retainer axle ［ 34 ］, retainer ［ 35 ］, lift retainer ［ 36 ］, tooth lifting cam ［ 38 ］, feeding tooth ［ 37 ］ form.Feeding cam ［ 29 ］ is fastened on the main shaft ［ 6 ］, the big end of connecting rod ［ 30 ］ is enclosed within on the feeding cam ［ 20 ］, small end is enclosed within to be regulated on the crank ［ 31 ］, feed spool ［ 32 ］ one ends are contained in to be regulated on the crank ［ 31 ］, one end is fastened on the crank of tooth frame ［ 33 ］, retainer ［ 35 ］ is hinged by retainer axle ［ 34 ］ and crank of tooth frame ［ 33 ］, tooth lifting cam ［ 38 ］ is fastened on the main shaft ［ 6 ］, lifting retainer ［ 36 ］ is enclosed within on the tooth lifting cam ［ 38 ］, and hinged with retainer ［ 35 ］, feeding tooth ［ 37 ］ is fastened on the retainer ［ 35 ］.During main shaft ［ 6 ］ rotation, feeding cam ［ 20 ］ promotes to regulate crank ［ 31 ］ by connecting rod ［ 30 ］ and crank of tooth frame ［ 33 ］ is swung around feed spool ［ 32 ］ together, crank of tooth frame ［ 33 ］ promotes retainer ［ 35 ］ by retainer axle ［ 34 ］ again and feeding tooth ［ 37 ］ moves forward and backward together, simultaneously, tooth lifting cam ［ 38 ］ rotates with main shaft ［ 6 ］, retainer ［ 36 ］ is lifted in driving, lift retainer ［ 36 ］ at last feeding tooth ［ 37 ］ pumped, feeding tooth ［ 37 ］ up and down and front-rear reciprocation movement finish the feeding function.

As shown in Figure 6, transmission mechanism for needle bar is made up of main shaft ［ 6 ］, link assembly ［ 47 ］, steel marble ［ 46 ］, pellet shot from a slingshot frame ［ 45 ］, balance staff ［ 44 ］, balance staff crank ［ 43 ］, hinge ［ 42 ］, shank joint ［ 41 ］, shank ［ 40 ］, pin folder ［ 39 ］, eedle ［ 19 ］.Link assembly ［ 47 ］ is enclosed within on the main shaft pellet shot from a slingshot off-centre hinged with main shaft ［ 6 ］, steel marble ［ 46 ］ is fixed on the pellet shot from a slingshot frame ［ 45 ］, hinged with link assembly ［ 47 ］, pellet shot from a slingshot frame ［ 45 ］ is by balance staff ［ 44 ］, be connected on the balance staff crank ［ 43 ］, hinge ［ 42 ］ two is hinged with balance staff crank ［ 43 ］ and shank joint ［ 41 ］ respectively, and shank ［ 40 ］ is fastened on the shank joint ［ 41 ］, pin folder ［ 39 ］ is equipped with in the lower end, and two mouthfuls of eedles ［ 19 ］ are clamped.When main shaft ［ 6 ］ rotates, the main shaft pellet shot from a slingshot is eccentric by link assembly ［ 47 ］ and steel marble ［ 46 ］, pellet shot from a slingshot frame ［ 45 ］ and balance staff crank ［ 43 ］ are swung around balance staff ［ 44 ］ together, again by hinge ［ 42 ］, shank joint ［ 41 ］, pin folder ［ 39 ］, eedle ［ 19 ］ are moved up and down, finish thorn material and lead-in wire function.

As shown in Figure 7, presser foot device is made up of presser feet seat ［ 52 ］, connecting pin ［ 51 ］, presser feet frame ［ 50 ］, presser feet handle ［ 49 ］, the presser foot component ［ 48 ］ of living etc.Presser feet seat ［ 52 ］ is installed on the support ［ 1 ］, and presser feet frame ［ 50 ］ is fastened on the presser feet seat ［ 52 ］, and presser feet handle ［ 49 ］ two ends are hinged with the presser feet frame ［ 50 ］ and the presser foot component ［ 48 ］ of living respectively.During work, under depression bar and the effect of depression bar spring, presser feet and cloth keep being close to, and in the time will shifting out cloth under presser feet, by presser feet spanner pressure-raising pin, finish the presser foot device function.

As shown in Figure 8, looper is crossed line mechanism and is made up of wire-passing tube ［ 54 ］, wire pressing device ［ 55 ］, looper line crossing bracket ［ 27 ］, looper ［ 18 ］.Two wire-passing tubes ［ 54 ］ are parallel to each other is installed in support ［ 1 ］ back, two wire pressing device ［ 55 ］ are parallel to each other is installed in support ［ 1 ］ left end, two lines of chain line looper through lines collude ［ 53 ］, wire-passing tube ［ 54 ］, wire pressing device ［ 55 ］, line crossing bracket ［ 27 ］, cable-through hole penetrates two mouthfuls of loopers ［ 18 ］ in proper order.

As shown in Figure 9, eedle is crossed line mechanism by upward crossing line plate ［ 57 ］, wire pressing device ［ 58 ］, playing line plate ［ 59 ］, head to cross line plate ［ 60 ］, little coil holder ［ 61 ］, eedle ［ 19 ］ to form.Going up line plate ［ 57 ］, wire pressing device ［ 58 ］, head crosses line plate ［ 60 ］ and is installed in support ［ 1 ］ top, little coil holder ［ 61 ］ is installed on the shank joint ［ 41 ］, two staight needle lines are drawn from two eedles ［ 19 ］ respectively by colluding ［ 56 ］ introducing from crossing line respectively shown in the figure again.

Claims (3)

1, a kind of crosspointer chain type Sewing machines, it comprises: support, main shaft, flywheel, chain line looper swing mechanism and travel mechanism, stroke that line transmission mechanism, feed mechanism, transmission mechanism for needle bar, presser foot device, looper are crossed line mechanism, eedle is crossed line mechanism, it is characterized in that: two punch blocks [17] one in front and one in back are installed on the chain line curved needle shaft [16], looper [18] is housed respectively above; Looper is crossed the wire-passing tube [54] of line mechanism, and wire pressing device [55] respectively has two, and parallel to each other being installed on the support [1].

2, crosspointer chain type Sewing machines according to claim 1, it is characterized in that: chain line looper swing mechanism is arranged between the left end head and chain line curved needle shaft ［ 16 ］ of main shaft ［ 6 ］, be in series by last pin crank ［ 7 ］, last pin connecting rod ［ 8 ］, steel marble ［ 10 ］, driving crank ［ 12 ］, crank connecting link ［ 13 ］, driven crank ［ 15 ］ etc., driving crank ［ 12 ］ is installed on the punch block axle ［ 11 ］, can swing up and down flexibly, last pin crank ［ 7 ］ is fastened on the main shaft ［ 6 ］, and driven crank ［ 15 ］ is contained on the chain line curved needle shaft ［ 16 ］.

3, crosspointer chain type Sewing machines according to claim 1 and 2, it is characterized in that: the longitudinal separation between two mouthfuls of loopers ［ 18 ］ through wires hole center line is 3～7 millimeters, about distance be 4～8 millimeters, the distance between all around between two mouthfuls of eedles ［ 19 ］ distance and two mouthfuls of loopers ［ 18 ］ the through wires hole center line matches.

Images