CN2040110U - Flat-head hole-lockstitching machine - Google Patents

Abstract

The utility model relates to a flat-head hole-lockstitching machine, comprising the mechanisms of transmission, take-up, wire-pass, wire hook, needle punch, feeding, swaging, cutter and starting and stopping. The utility model is characterized in that the feeding mechanism adopts the structure of compounding cam, and the swaging and cutter mechanism adopt the structure of lever; the needle punch mechanism adopts adjustable structure with a sliding block and a triangular cam, and the stopping mechanism adopts the compound stopping structure of cushioning and fixing; the starting mechanism adopts the structure of running wheel and driving board. The utility model has the advantages of simple structure, convenient maintenance and adjustment, low cost and no adoption of complicated gear mechanism.

Description

Flat-head hole-lockstitching machine

The utility model relates to a kind of tack lockhole machine that the transmission of a single-phase miniature electric machine is provided for middle-size and small-size underwear, apparel industry.This lockhole machine is convenient to stitch the buttonhole of fabrics such as lock pin thin and intermediate gauge, cotton, chemical fibre, and especially the buttonhole of seam lock men's and ladies' shirts, underwear, Work Clothes and children's garment is more suitable.

The tack lockhole machine that China uses in the market, the product LHA-B814 of brother company type, the product LBH-781 of Juki Corporation type of Japanese import etc. are arranged, the homemade Shanghai two seam product G I5-1 of factory types, the Guangzhou two seam product G I6-1 of factory types are also arranged, the internal works complexity of these products, great majority adopt gear drive, it is high that maintenance technique is wanted, and the cost height can only adapt to Chinese large-sized factory and use.

The purpose of this utility model is to provide a kind of mechanism simple tack lockhole machine.

The utility model is achieved in that the tack lockhole machine comprises transmission, acupuncture, feeding, binder, take-up, crosses line, colludes line, cutting knife, opens mechanism such as braking, wherein transmission, cross line, take-up, to collude parts such as line identical with JA type domestic sewing machine, feeding, binder, acupuncture, cutting knife, the principle that opens the homemade tack lockhole machines of parts reference such as braking have structurally been done following improvement.

Feed mechanism adopts the compound cam structure, binder, cutter mechanism adopt lever construction, acupuncture mechanism has the structure that slide block and triangular cam are regulated, and arrestment mechanism adopts the buffering and the fixing brake structure of combined type, the structure of actuating mechanism employing activity wheel and slurcam.

All parts of this product can be finished the functional requirement of seam lock line, noose and otch perfectly.

The utility model is to have as above advantage: it is owing to the gear-driven structure that does not adopt complexity, so its simple in structure, easy to maintenance, low cost of manufacture, easy to adjust.

The concrete structure of this product is provided by the following drawings.

Fig. 1 is the casing construction diagrams of this product, and housing (1), top cover (2), panel (3), case (4), cover plate (5) and chassis compositions such as (6) are wherein arranged.

Fig. 2 is the form schematic diagram of this product seam lock tack buttonhole, wherein has left line (1), right line (2), end socket noose (3), ending noose (4) to form.In seam lock process, at first to consider buttonhole total length (5), buttonhole overall width (6) and cut the width that product cutter stitches (7), adjust axial line distance (8) then, make left axis (9), seam left line (from bottom to top) earlier from figure, back seam end socket noose, make right axis (10), stitch right line (from top to bottom), the noose of seam ending at last from figure.

Fig. 3 is the schematic diagram of this product internal structure acupuncture part.

The acupuncture parts of this product also need teeter except up-and-down movement, seam lock out the stitching of line, and swinging of eedle (1) is that the slide block (4) that the left rotation and right rotation by swinging axle (2) has driven on the needle bar frame (3) is realized.The rotation of swinging axle is to rely on moving up and down of wobble crank (5) to realize.Because the slide block (8) at wobble crank and tooth fork (6) middle part links together, rely on tooth jaw portion that rotating a circle of triangular cam (7) arranged again, make the swing of tooth fork once.The rotation of triangular cam is by spindle.Triangular cam rotates a circle, and needle bar frame swing just once.

The amplitude of putting about needle bar frame is exactly the width of seam lock line stitching, and it is the displacement that relies on tooth fork middle part slide block, by regulating screw (9) and spring (10) control.Because the fulcrum of tooth fork-tail portion is fixedlyed connected with the afterbody of adjusting rod (11), its pendulum distance is big more more forward to regulate screw, otherwise its pendulum is apart from just little.The size of pendulum distance promptly is the length of buttonhole line needle gage.

Two row about seam cage knob hole line has, about the displacements of two row, be protrusion sheet position (13) and recessed position (14) that rely on the compound cam (12), by roller bearing (15) contact, produce up and down and be shifted.Roller connects the afterbody of regulating, because the head of adjusting rod has fulcrum (16) fixing, so the displacement up and down of roller, make the afterbody displacement simultaneously of the afterbody and the tooth fork of adjusting rod, form the left and right sidesing shifting of needle bar frame.Protrusion sheet position at compound cam forms left line needle tracking, forms right line at recessed position.

The noose that an end socket is arranged in left line line conversion to the right, be to rely on projection (17) the promotion fore-set (18) above the compound cam that the head promotion slide block of fore-set is moved forward rapidly, forming long especially needle bar frame pendulum distance, stitch out long especially line stitching, promptly is the noose of end socket.The adjusting of end socket noose width is the screw (19) of fore-set head, and screw noose width more forward is big more, otherwise the noose width is more little.

The axial line distance of two row lines changes about desiring to make, and forms the overall width size of buttonhole.The method of regulating is to rely on two screws (20) of adjusting rod afterbody and (21) to control.When (21) screw down made adjusting rod raise, roller can not contact with the concave edge of cam, reduced concavo-convex gap, and the overall width of buttonhole is just little, otherwise overall width is just big more, and total width is the poor of cam male and fomale(M﹠F).

Compound cam has a projection (22) again when turning to the concave edge rear end, it and projection (17) are same functions, plays the noose of seam lock ending again.

Behind the seam lock ending noose, the seam lock of buttonhole finishes, and at the other end of combined camshaft, a runner (23) is arranged, and stirs another brake lever by the driving lever that protrudes on the runner, and lockhole machine is stopped operating.

Note the method for operating of a buttonhole of seam lock, at first determine overall width, can regulate screw (20) and (21), the size of two row lines about the decision can be regulated screw (9) then, and two row line needle gages are big more, space in the middle of the two row lines is just little, otherwise the space is just big.The size of intermediate gaps is the cutter seam that gives over to the buttonhole otch.Therefore regulating the line size is related with adjusting recessing tool seam size.So regulating the recessing tool seam carries out simultaneously with adjusting line needle gage.

Fig. 4 is the schematic diagram of the feeding of this product internal structure, binder, notch portion.

The feeding parts are the mechanisms that form seam cage knob hole length, push down sewing by presser feet (27) and move forward and backward, and the method that moves is to be located in the arc groove of length adjustment frame (25) by slide block screw (24).Because the length adjustment frame is drawn by the inner groovy (26) of compound cam, the male and fomale(M﹠F) of inner groovy is made the length adjustment frame to swing by roller and is promoted presser feet and move forward and backward.The adjusting that presser feet moves forward and backward is the displacement decision of being made above-below direction by slide block screw (24) in the arc groove of length adjustment frame (25).Upwards pendulum is apart from big for the slide block screw, and feeding is just long, also is the length of buttonhole.Otherwise apart from little, feeding is just short to the bottom for the slide block screw, becomes the weak point degree of buttonhole.

Seam cage knob hole is long more, and the acupuncture amount of each buttonhole is many more, otherwise the acupuncture amount will be lacked.The needle gage density that must keep seam cage knob hole is the quality requirement in seam cage knob hole.Therefore seam lock density must be regulated.Control method is the speed of control combination cam rotation, because compound cam rotates a circle, promptly is the process of finishing a buttonhole of seam lock.The rotation of compound cam is to affect an end of release handle (29) to do up and down by the eccentric wheel of spindle (30).The other end at release handle is equipped with the catch bar (31) and the ratchet pawl (32) of two groups of ratchet pawls up and down, promotes ratchet pawl downwards and play unidirectional promotion compound cam when release handle is movable.When release handle was upwards movable, ratchet pawl lost the catch bar impetus, makes compound cam static.For prevent compound cam have backward move may, at another place of compound cam, install one again and prevent to swing to mobile ratchet pawl (33) and guarantee moving steadily of compound cam.Since the distance that how much the up and down amplitude of release handle is ratchet pawl moves what.So the adjusting of the up and down amplitude of release handle also is the adjusting of needle gage density, just in release handle regulates that screw (28) carries out, screw left direction for the closeest, to right for the rarest.

About presser feet push down sewing stitch the lock finish after, must lift the taking-up sewing.Therefore on depression bar (34) that increase pressure should be arranged on the presser feet and depression bar, dog (35) is housed and makes dog upwards lift presser feet, take out sewing, also can put into sewing by the top power of lifting depression bar (36) A end face.

About the device of otch, be that the top power by otch knife bar (37) B end face makes the otch knife bar downward, play the roll setting otch.The top power of AB end face be on the one hand by lever (38) manually up and down effect produce, on the other hand by laterally stirring adjusting about manual driving lever plate (39).

Fig. 5 is the device schematic diagram that opens braking.Be tail end at main shaft friction pulley (40) is housed is driving wheel with movable wheel (41), two promptly machine after having taken turns rubbing action, just are braked after the disengaging rubbing action.Movable wheel works with contacting by the promotion of slurcam (42) of friction pulley, and the front end of slurcam (42) has an inclined-plane, and the promotion of slurcam is to be worked by the displacement that starts frame (43), and the displacement that starts frame is manual.After palm starts, start frame and withstand, after brake lever is struck, starts frame and just recover the origin-location, do not work the effect of starting by spring (45) by brake lever (44).On brake bracket (46), have the friction fork (47) of a buffer-braking to contact the buffer-braking effect with friction pulley on the contrary, continue after the braking mandril (48) of brake bracket withstand friction pulley again, play whole braking actions.

Claims (5)

1, the tack lockhole machine it comprise transmission, take-up, cross line, collude line, acupuncture, feeding, binder, cutting knife, open arrestment mechanism, it is characterized in that feed mechanism adopts the compound cam structure, binder, cutter mechanism adopt lever construction, acupuncture mechanism has the structure of slide block and triangular cam adjusting, arrestment mechanism adopts the buffering and the fixing brake structure of combined type, the structure of actuating mechanism employing activity wheel and slurcam.

2, tack lockhole machine according to claim 1 is characterized in that the slide block and the triangular cam structure of acupuncture mechanism, by triangular cam (7), slide block (8), spring (10), adjustment screw formations such as (9).

3, tack lockhole machine according to claim 1 is characterized in that the compound cam structure of feed mechanism, is made of compound cam (12), length adjustment frame (25), slide block (24).

4, tack lockhole machine according to claim 1 is characterized in that the lever construction of cutting knife and presser foot device, is made of lever (38), driving lever (39).

5, tack lockhole machine according to claim 1 is characterized in that the buffering of arrestment mechanism and the fixing brake structure of combined type, is made of friction fork (47), braking mandril (48).

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