CN2173797Y

CN2173797Y - Medium-fast eight-thread chain type stitch sewing machine

Info

Publication number: CN2173797Y
Application number: CN 93234549
Authority: CN
Inventors: 陈耀彩
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-08-21
Filing date: 1993-08-21
Publication date: 1994-08-10
Anticipated expiration: 2003-08-21

Abstract

The utility model relates to a medium-speed eight-thread chain type stitch sewing machine. A fore-and-aft swing mechanism and a left-right moving mechanism of a bend needle shaft, a thread feeding collecting device of a bend needle and a thread take-up device of a needle bar are designed on the basis of the existing medium-speed flat sewing machine. A hook needle is changed into the bend needle, and a lock type thread trace is changed into a chain type thread trace. The medium-speed eight-thread chain type stitch sewing machine is suitable for the sewing of general sewing material and larger elasticity sewing material, and four-way eight-thread chain type stitch are sewn out once. The utility model has the advantages of simple structure, convenient operation, uniform and beautiful stitch, and plentiful flexibility and can process general and larger-elasticity knitted goods, jackets, clothes cuffs, screenings, the shrink strips of skirts, etc. The utility model is a somewhat ideal sewing machine at present.

Description

Medium-fast eight-thread chain type stitch sewing machine

The utility model relates to a kind of contract middling speed eight-thread chain type sewing machine of bar of clothes of making.

Existing medium speed flat bed sewing machine belongs to lock-type chain stitch, does not fit into to make the bigger seam spare of retractility.But has simple structure, the characteristics that the needle gage adjustable range is big.

Task of the present utility model is on the basis of existing medium speed flat bed sewing machine, has designed curved needle shaft swing and left/right movement device and looper for take-up, shank take-up device.Changing lock-type chain stitch is chain-type stitch, is fit to making of the big sewing of retractility.Increase the number of pin, once stitch out the chain-type stitch of four tunnel eight lines.

Accompanying drawing 1 is an installation diagram of the present utility model

Accompanying drawing 2 is the utility model installation diagrams for the take-up part

Accompanying drawing 3 is the utility model vertical pivot, curved needle shaft part assembly drawing

Accompanying drawing 4 is installation diagrams of the utility model transverse axis, tetragonal prism plug portion

Structure of the present utility model has been described by main shaft 1 among the figure, balance staff eccentric wheel 2 and gear train, connecting rod 3, pendulum fork 4, balance staff 5, triangle is askew takes turns 6, four directions frame cover 7, skeleton frame 8, vertical pivot 9, transverse axis gear train 10,11, vertical pivot gear 12, curved needle shaft 13, looper 14, needle bar crank 15, shank sleeve 16, shank 17, shank joint pin 18, eedle, take-up board, square 19, suture needle 20, connecting crank 21, shank connecting rod 22, shank joint pin slide block 23, shank slide block guide rail 24, lift tooth connecting rod 25, fork-shaped feeding rod 26, needle gage connecting rod 27, needle gage adjuster 28, side is along spanner 29, needle gage adjusting screw(rod) and rare close marking panel 30, retainer 31, feed spool crank 32, feed spool 33, feed lifting rock shaft 34, feed lifting rock shaft crank 35, feeding tooth 36, tooth eccentric wheel 37 is lifted in feeding, tooth eccentric wheel 38 is lifted in feeding, transverse axis 39, looper is for take-up cam 40, four directions plunger 41, cross line plate 42, four directions frame 43 compositions such as grade.

Enforcement of the present utility model is finished in the following manner:

The 24 tooth wheels that one outside is with balance staff eccentric wheel 2 are installed at the mainshaft gear place of former main shaft vertical pivot gear train, and balance staff eccentric wheel 2 overcoat load bars 3, connecting rod 3 are put fork 4 together and are connected, and balance staff 5 can be swung in pendulum is pitched 4 mouthfuls, and curved needle shaft 13 is connected with balance staff 5.When main shaft 1 rotation; Eccentric wheel 37 rotates, and connecting rod 3 moves up and down, and drives 4 swings of pendulum fork, and the balance staff 5 that is clipped in pendulum fork 4 prong centers swings back and forth, and makes the looper 14 that is contained on the curved needle shaft 13 do swing and realize colluding line.

The vertical pivot gear 12 that mainshaft gear changes 24 tooth wheels and vertical pivot 9 upper ends into to be passing to vertical pivot 9 with speed, the tail end of vertical pivot 9 is equipped with that triangle is askew takes turns 6, and triangle is askew takes turns 6 and be with cubic frame cover 7 outward, be contained in the skeleton frame 8, and removable.When main shaft 1 rotation, vertical pivot 9 rotates, and is contained in that triangle on the vertical pivot 9 is askew takes turns 6 and rotate, and triangle is askew takes turns 6 cubic frame cover 7, balance staff 9, curved needle shaft 13 move left and right that make the outside.

Above two kinds of actions cooperatively interact, make looper 14 swings and move left and right, finish and collude line and form chain-type stitch.

Adorn a pair of gear 10,11 at the middle part of vertical pivot 9, main shaft 1 power is passed to vertical pivot 9 and main shaft 1 is vertical with vertical pivot 9, transverse axis 39 tail ends are equipped with a looper for take-up cam 40, are close to 41 contacts of the cubic plunger in cubic frame 43 holes that are contained in wire passing device plate 42 for take-up cam 40.When main shaft 1 rotates, by vertical pivot 9, transverse axis 39 transmissions, make for take-up cam 40 and rotate, the cubic plunger 41 in the cubic frame 43 moves up and down, and finishes for the take-up process.

When main shaft 1 rotation, the needle bar crank 15 that is fixed on main shaft 1 left end rotates, by connecting crank 21, shank connecting rod 22, shank joint pin 18 is passed to shank 17 to power, sleeve 16 is with shank joint pin 18 about the shank, shank slide block guide rail 24, shank joint pin slide block 23 cooperates, the rotation of main shaft 1 becomes moving up and down of shank 17, be contained in the eedle of shank 17 lower ends, take-up board, square 19, eedle both had been installed to be used, the shank take-up board that fixes is again used, the tension disk of regulating the suture degree of tightness is installed on the take-up board, in becoming the seam process, regulate the upper thread degree of tightness, reach into the seam purpose.

When main shaft 1 rotation, lift the wobbler action on tooth eccentric wheel 37 left sides by feeding, the swing that produces fork-shaped feeding rod 26 by eccentric wheel 37 outer collar, owing to be subjected to pining down of needle gage connecting rod 27, be the moving fulcrum swing around the mid point of needle gage adjuster 28, produce the vertical direction displacement, feeding crank 32 cooperates with feed spool 33, form back and forth and rotate, the feeding tooth is installed on the retainer 31, and retainer 31 is installed on the feed spool 33 by a cover conical screw.The reciprocating motion of feed spool 33 promotes seesawing of feeding tooth.Owing to lift the wobbler action on tooth eccentric wheel 38 the right, to lift tooth connecting rod 25 feed lifting rock shaft 34 is back and forth rotated, the plush copper of feed lifting rock shaft crank 35 is embedded in retainer 31 forks, and when feed lifting rock shaft 34 back and forth rotated, feed lifting rock shaft crank 35 moved up and down retainer 31, and the feeding tooth is moved up and down.

Balance staff eccentric wheel 2 and gear train are fixed on the main shaft 1, the lower end that is contained in the connecting rod 3 outside the eccentric wheel 2 connects an end of pendulum fork 4, be embedded with balance staff 5 in the prong of pendulum fork 4, one end fixed bend needle shaft 13 of balance staff 5, be pendulum point fulcrum, the other end is a moving fulcrum with 7 in cubic frame cover, so balance staff 5 makes the looper 14 that will be contained in curved needle shaft 13 front ends do swing under the driving of pendulum fork 4.

The lower end of vertical pivot 9 is equipped with that the triangle that is enclosed within the cubic frame cover 7 is askew takes turns 6, rotate with vertical pivot 9, cause cubic frame cover 7 in skeleton frame 8, to move, make balance staff 5 move left and right that connect with cubic frame cover 7, with curved needle shaft 13 move left and right that balance staff 5 is fixed, be contained in looper 14 move left and right of looper 13 front ends.

Vertical pivot 9 middle parts, gear 10,11 is meshing with each other, the tail end of transverse axis 39 is loaded onto looper take-up cam 40 and is closely cooperated with the cubic plunger 41 in the cubic frame 43 that was contained in the line plate 42, when transverse axis 39, when looper take-up cam 40 rotates, four directions plunger 41 moves up and down in cubic frame 43, reaches for take-up.

The utility model has designed curved needle shaft swing and left/right movement device and looper for take-up.Shank take-up device, changing bearded needle is looper, changing lock-type chain stitch is chain-type stitch, is fit to making of the bigger sewing of general sewing and retractility, once stitches out the chain-type stitch of four tunnel eight lines.It is simple to have mechanism, and stitching is evenly attractive in appearance, is rich in retractility; The bar etc. that contracts of knitwear, jacket, clothes cuff, leftover bits and pieces and skirt that can processing general and retractility be bigger.

Claims

1, a kind of middling speed eight-thread chain type stitch sewing machine, by main shaft [1], vertical pivot [9], curved needle shaft [13], balance staff [5], triangle is askew takes turns [6], shank [17], needle gage connecting rod [27], looper is for take-up cam [40], four directions frame [43] is formed, it is characterized in that balance staff eccentric wheel [2] overcoat load bar [3], and with pendulum fork [4] connection, balance staff [5] can be swung in pendulum fork [4] mouth, curved needle shaft [13] is connected with balance staff [5], the tail end of vertical pivot [9] is equipped with askew a wheel of triangle [6], be installed in the outer movably cubic frame cover [7] that is with of askew wheel of triangle [6] in the skeleton frame [8], transverse axis [39] tail end is equipped with a looper for take-up cam [40], be close to the contact of the cubic plunger [41] in cubic frame [43] hole that is contained in wire passing device plate [42], main shaft [1] left end has by needle bar crank [15], connecting crank [21], shank connecting rod [22], shank joint pin [18], the force transfer mechanism that shank [17] is formed, sleeve [16] is with shank joint pin [18] about the shank, shank slide block guide rail [24], shank joint pin slide block [23] cooperates, and eedle is equipped with in shank [17] lower end, take-up board square [19].