CN201473726U - Button-hole sewing machine - Google Patents
Button-hole sewing machine Download PDFInfo
- Publication number
- CN201473726U CN201473726U CN200920190132XU CN200920190132U CN201473726U CN 201473726 U CN201473726 U CN 201473726U CN 200920190132X U CN200920190132X U CN 200920190132XU CN 200920190132 U CN200920190132 U CN 200920190132U CN 201473726 U CN201473726 U CN 201473726U
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- Prior art keywords
- fork
- slide block
- balancing point
- needle
- shank
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Abstract
The utility model relates to a button-hole sewing machine, which comprises a machine shell, a machine upper shell, a machine shaft, a needle bar, a fabric feeding table and a curved needle, wherein the needle bar is used for installing an internal needle, the fabric feeding table can move in an x-y horizontal coordinate system and the curved needle is arranged below the fabric feeding table. The machine shaft drives the needle bar to sting a fabric up and down. The needle bar and the curved needle form a seam for a button hole. A swinging needle cam is arranged at the front end part of the machine upper shell. The swinging needle cam drives a fork-shaped reciprocating bar to move up and down. The fork-shaped reciprocating bar is hinged with a swinging bar mechanism through a connecting bar. The rear end of the swinging bar mechanism is hinged with a shifting bar. A fork on the shifting bar is hinged with a swinging needle slide block to enable the swinging needle slide block to move up and down. An inclined groove on the swinging needle slide block pushes the needle bar to move horizontally to realize the movement of a swinging needle. The utility model has the advantages that the structure of the swinging needle mechanism is compact, the transmission space is reduced, the transfer links are reduced, the accumulated clearance error is reduced and the transmission is more stable.
Description
Technical field
The utility model relates to a kind of Buttonhole sewing machine, refers in particular to the improvement to the Buttonhole sewing machine needle vibrating mechanism.
Background technology
Usually chain-type stitch button (button) hole sewing machine needle bar motion all has two mechanisms to drive, i.e. shank up-down mechanism and balancing point motion, and their version is respectively different to some extent.As: Chinese patent once disclosed a kind of " round end button holing sewing machine " (Japan, publication number CN1924142A, open day 2007.3.7), comprise: the shank that suture needle is installed, the shank up-down mechanism that this shank is moved up and down, make the needle swinging mechanism of shank swing, the shank rotating mechanism that shank can be rotated around its axle center, and the curved needle seat rotating mechanism of rotational synchronization ground rotation that can make curved needle seat and the described shank of supporting looper, it is characterized in that, described shank up-down mechanism has: with the needle bar crank of the main shaft interlock of described Sewing machines, and passing to the transmission mechanism that moves up and down of shank with described needle bar crank interlock and with the driving force up and down of described needle bar crank, this round end button holing sewing machine is provided with the lubricating oil feed mechanism by a plurality of sliding part supplying lubricating oils of the described transmission mechanism that moves up and down of oily alignment.Needle vibrating mechanism shown in the 23rd page of Fig. 4 in this patent application document specification, moving up and down of shank is to lean on the axle of going up along machine upper casing direction to rotate, by toggle eedle is moved up and down, the centre of fuselage have one perpendicular on this axle transverse axis on the balancing point cam is installed, make two rocking bar motions by cam, driving the balancing point slide block that has skewed slot by fork again moves up and down, the locating piece horizontal direction that skewed slot drives on the shank moves, thereby makes shank produce the balancing point motion.The prior art common drawback is: transmission link is more, and the transmission space is bigger, and it is compact that structure is owed, and the accumulative total gap error is not little.
The utility model content
The purpose of this utility model is to provide a kind of Buttonhole sewing machine, and its needle vibrating mechanism compact conformation has reduced the transmission space, reduced transmission link, reduced the accumulative total gap error, more stable transmission can also be adjusted the size of the shank amplitude of oscillation arbitrarily in certain scope.
For achieving the above object, the solution that the utility model is taked is: a kind of Buttonhole sewing machine, it comprises casing, the machine upper casing, arbor, the shank of pin in installing, have cloth pushing table that the x-y horizontal coordinates moves and the looper below this cloth pushing table, arbor drives shank, shank is made the linear slit of Ci Bu motion up and down and looper formation buttonhole, the balancing point cam is arranged on the front end position of machine upper casing, balancing point cam drive one fork-shaped reciprocating lever moves up and down, the fork-shaped reciprocating lever passes through a rod hinge connection in a swing-bar mechanism, the hinged driving lever in the rear end of swing-bar mechanism, shift fork on this driving lever is articulated in the balancing point slide block, the balancing point slide block is moved up and down, trapezoidal skewed slot on the balancing point slide block promotes shank and moves horizontally, and realizes the balancing point motion.
Because its needle vibrating mechanism compact conformation of this Buttonhole sewing machine has reduced the transmission space, has reduced transmission link, reduced the accumulative total gap error, more stable transmission.
Description of drawings
Fig. 1 is a Buttonhole sewing machine partial interior structural representation.
Fig. 2 is the annexation schematic diagram between balancing point cam, fork-shaped reciprocating lever, connecting rod and the swing-bar mechanism.
Fig. 3 is a kind of sewing thread trace schematic diagram of Buttonhole sewing machine.
Fig. 4 is the swing-bar mechanism structural representation.
Fig. 5 is driving lever and balancing point slide block structure schematic diagram.
Among the figure: 1, the balancing point cam, 1a, the shaft shoulder, 1b, back-up ring, 2, the fork-shaped reciprocating lever, 3, the axis of guide, 4, connecting rod, 5, axle, 6, bearing one, 7, bearing two, 8, casing, 9, the machine upper casing, 10, screw, 11, regulating shaft, 12, nut, 13, swing-bar mechanism, 13a, first section fork, 13b, second section fork, 14, hinge, 15, the elongated slot screw, 16, driving lever, 17, lock ring, 18, the hinge plate, 19, the slide block back-up ring, 20, the slide block screw, 21, the balancing point slide block, 22, the shank rotating cylinder, 23, trapezoidal axle, 24, packing ring, 25, arbor, 26, shank, 27, hinge, 28, trapezoidal skewed slot.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing thereof the utility model is remake description.
Referring to Fig. 1, Fig. 2, Fig. 4 and Fig. 5, a kind of Buttonhole sewing machine, it comprises casing 8, machine upper casing 9, arbor 25, the shank 26 of pin in installing, have cloth pushing table that the x-y horizontal coordinates moves and the looper below this cloth pushing table, arbor 25 drives shank 26, shank 26 is made the linear slit of Ci Bu motion up and down and looper formation buttonhole, balancing point cam 1 is arranged on the front end position of machine upper casing 9, balancing point cam 1 drives a fork-shaped reciprocating lever 2 and moves up and down, fork-shaped reciprocating lever 2 is articulated in a swing-bar mechanism 13 by a connecting rod 4, the hinged driving lever 16 in the rear end of swing-bar mechanism 13, shift fork on this driving lever 16 is articulated in balancing point slide block 21, balancing point slide block 21 is moved up and down, trapezoidal skewed slot 28 on the balancing point slide block 21 promotes shank 26 and moves horizontally, and realizes the balancing point motion.
Referring to Fig. 1 and Fig. 2, described balancing point cam 1 is fixed on the axle 5, the axle 5 by its two ends bearing 1 is set respectively, bearing 27 is set on the machine upper casing 9, the prong of fork-shaped reciprocating lever 2 is stuck on the balancing point cam 1, have shaft shoulder 1a and back-up ring 1b on the balancing point cam 1, shaft shoulder 1a and back-up ring 1b carry out axial limiting to fork-shaped reciprocating lever 2 both sides.
Referring to Fig. 2, inserted the axis of guide 3 of above-below direction lead effect in the described fork-shaped reciprocating lever 2, the axis of guide 3 usefulness screws 10 are fixed on the machine upper casing 9, one end articulated type of connecting rod 4 is connected the lower end of fork-shaped reciprocating lever 2, other end articulated type is connected on the regulating shaft 11, the other end of this regulating shaft 11 is fastened on the arc groove of swing-bar mechanism 13 with nut 12, the center of circle of the arc groove on the swing-bar mechanism 13 is hinge 14 axial lines of connecting rod 4 upper ends, the arc radius of arc groove equals connecting rod 4 two ends hinges 14 axial line distance length, the center of circle of arc groove is connecting rod 4 and fork-shaped reciprocating lever 2 pin joints, unclamp nut 12, regulating shaft 11 slides in the arc groove of swing-bar mechanism 13.This is used to regulate the size of the fork amplitude of oscillation, can obtain the sewing thread trace of different amplitude of oscillation sizes like this.Again because the center of circle of the arc groove on the swing-bar mechanism 13 is hinge 14 axial lines of connecting rod 4 upper ends, so regulating shaft 11 optional position in arc groove can not cause moving of swing-bar mechanism 13.
Referring to Fig. 4, described swing-bar mechanism 13 is made up of first section fork 13a and second section fork 13b two parts, second section fork 13b is enclosed within on the hinge sleeve pipe of first section fork 13a and is fastening with two elongated slot screws 15, when two elongated slot screws 15 unclamped, second section fork 13b swung an angle around the hinge sleeve pipe of first section fork 13a.Referring to Fig. 3, interior pin position dimension a has certain requirements, and owing to processing, the alignment error of many elements in the shank system, pin position dimension a's is stable in the influence.Because the particular design of swing-bar mechanism 13, when two elongated slot screws 15 unclamp, second section fork 13b can swing an angle around the hinge sleeve pipe of first section fork 13a, adjusts the interior pin position dimension a of requirement by this link, the stable problem of pin position dimension a in solving well.
Referring to Fig. 4 and Fig. 5, described driving lever 16 is assemblied in the guide cylinder of swing-bar mechanism 13 and makes axial location with lock ring 17, it is hinged with hinge plate 18 that the other end of driving lever 16 is fork-shaped, driving lever 16 is formed a universal structure with hinge plate 18, there is a hole greater than balancing point slide block 21 diameters of axle centre of hinge plate 18, the hole that packing ring 25 and hinge plate 18 are passed in balancing point slide block 21 upper ends penetrates slide block back-up ring 19 and fastening with slide block screw 20 again, and the hole of hinge plate 18 and the diameter of axle of balancing point slide block 21 upper ends are gapped.Like this, hinge plate 18 just can drive balancing point slide block 21 and move up and down, and the hole of hinge plate 18 and the diameter of axle of balancing point slide block 21 upper ends have very big gap, are used for offsetting the displacement of swing-bar mechanism 13 horizontal directions.
Referring to Fig. 4 and Fig. 5, described shank slide block 21 two sides are respectively equipped with trapezoidal skewed slot 28, two trapezoidal axles 23 that are fixed on the shank rotating cylinder 22 are stuck in two trapezoidal skewed slots 28, when balancing point slide block 21 moves up and down, trapezoidal axle 23 and shank rotating cylinder 22 produce simultaneously laterally and move, and shank slide block 21 drives shank 26 and does the balancing point motion.
This Buttonhole sewing machine also has following characteristics:
(1) this Buttonhole sewing machine makes balancing point cam 1 be easy to realize being arranged on machine upper casing 9 front end positions by axle 5, fork-shaped reciprocating lever 2 is provided with spacing at the axis direction of balancing point cam 1 by shaft shoulder 1a and back-up ring 1b, the axis of guide 3 plays position-limiting action along the vertical direction to compound lever 2 in perpendicular to the plane of balancing point cam 1 axis, the axis of guide 3 also plays the above-below direction guide effect in this plane.
(2) swing-bar mechanism 13 can be regulated (amplitude of oscillation amplitude of oscillation scope 0-3.5mm) of the original position and the amplitude of oscillation size of output, input at swing-bar mechanism 13, a just hinged end with connecting rod 4, can change the size of first section fork 13a and second section fork 13b by mobile interface point, realize changing amplitude of oscillation size, the pin position also changed thereupon in but the change of amplitude of oscillation size but brought, and need readjust.In order to address this problem, this end of needle vibrating mechanism 13 is designed to circular arc mechanism, arc radius equals connecting rod 4 length, and the center of circle is connecting rod 4 and fork-shaped reciprocating lever 2 pin joints, can not produce pin change in location in the shank 26 when connecting rod 4 moves change swing-bar mechanism 13 length along circular arc again.
(3) movement locus of the other end of swing-bar mechanism 13 is the circular arcs around hinge 27, this end is designed to a guide cylinder (tube-in-tube structure), this guide cylinder is vertical with the swaying direction of swing-bar mechanism 13, the driving lever 16 that connects balancing point slide block 21 is assemblied in this guide cylinder, the other end of driving lever 16 is the hinged hinge plate 18 of fork-shaped, there is a hole greater than balancing point slide block 21 diameters of axle centre of hinge plate 18, therefore overcomes the horizontal displacement of swing-bar mechanism 13 end circular motions, and balancing point slide block 21 is moved up and down.
Claims (6)
1. Buttonhole sewing machine, it comprises casing (8), machine upper casing (9), arbor (25), the shank (26) of pin in installing, have cloth pushing table that the x-y horizontal coordinates moves and the looper below this cloth pushing table, arbor (25) drives shank (26), shank 26 is made the linear slit of Ci Bu motion up and down and looper formation buttonhole, it is characterized in that: balancing point cam (1) is arranged on the front end position of machine upper casing (9), balancing point cam (1) drives a fork-shaped reciprocating lever (2) and moves up and down, fork-shaped reciprocating lever (2) is articulated in a swing-bar mechanism (13) by a connecting rod (4), the hinged driving lever in the rear end of swing-bar mechanism (13) (16), shift fork on this driving lever (16) is articulated in balancing point slide block (21), balancing point slide block (21) is moved up and down, trapezoidal skewed slot (28) on the balancing point slide block (21) promotes shank (26) and moves horizontally, and realizes the balancing point motion.
2. Buttonhole sewing machine according to claim 1, it is characterized in that: described balancing point cam (1) is fixed on the axle (5), the axle (5) by its two ends bearing one (6) is set respectively, bearing two (7) is set on the machine upper casing (9), the prong of fork-shaped reciprocating lever (2) is stuck on the balancing point cam (1), have the shaft shoulder (1a) and back-up ring (1b) on the balancing point cam (1), the shaft shoulder (1a) and back-up ring (1b) carry out axial limiting to fork-shaped reciprocating lever (2) both sides.
3. Buttonhole sewing machine according to claim 1, it is characterized in that: the axis of guide (3) of having inserted the effect of above-below direction lead in the described fork-shaped reciprocating lever (2), the axis of guide (3) is fixed on the machine upper casing (9) with screw (10), one end articulated type of connecting rod (4) is connected the lower end of fork-shaped reciprocating lever (2), other end articulated type is connected on the regulating shaft (11), the other end of this regulating shaft (11) is fastened on the arc groove of swing-bar mechanism (13) with nut (12), the center of circle of the arc groove on the swing-bar mechanism (13) is hinge (14) axial line of connecting rod (4) upper end, the arc radius of arc groove equals connecting rod (4) two ends hinges (14) axial line distance length, the center of circle of arc groove is connecting rod (4) and fork-shaped reciprocating lever (2) pin joint, unclamp nut (12), regulating shaft (11) slides in the arc groove of swing-bar mechanism (13).
4. Buttonhole sewing machine according to claim 1, it is characterized in that: described swing-bar mechanism (13) is made up of first section fork (13a) and second section fork (13b) two parts, second section fork (13b) is enclosed within on the hinge sleeve pipe of first section fork (13a) and is fastening with two elongated slot screws (15), two elongated slot screws (15) are when unclamping, and second section fork (13b) swung an angle around the hinge sleeve pipe of first section fork (13a).
5. Buttonhole sewing machine according to claim 1, it is characterized in that: described driving lever (16) is assemblied in the guide cylinder of swing-bar mechanism (13) and makes axial location with lock ring (17), it is hinged with hinge plate (18) that the other end of driving lever (16) is fork-shaped, driving lever (16) is formed a universal structure with hinge plate (18), there is a hole greater than balancing point slide block (21) diameter of axle centre of hinge plate (18), the hole that packing ring (25) and hinge plate (18) are passed in balancing point slide block (21) upper end penetrates slide block back-up ring (19) and fastening with slide block screw (20) again, and the diameter of axle of the hole of hinge plate (18) and balancing point slide block (21) upper end is gapped.
6. Buttonhole sewing machine according to claim 1, it is characterized in that: described shank slide block (21) two sides are respectively equipped with trapezoidal skewed slot (28), two trapezoidal axles (23) that are fixed on the shank rotating cylinder (22) are stuck in two trapezoidal skewed slots (28), when balancing point slide block (21) when moving up and down, trapezoidal axle (23) and shank rotating cylinder (22) produce simultaneously laterally and move, and shank slide block (21) drives shank (26) and does the balancing point motion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920190132XU CN201473726U (en) | 2009-07-23 | 2009-07-23 | Button-hole sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920190132XU CN201473726U (en) | 2009-07-23 | 2009-07-23 | Button-hole sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201473726U true CN201473726U (en) | 2010-05-19 |
Family
ID=42409972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920190132XU Expired - Fee Related CN201473726U (en) | 2009-07-23 | 2009-07-23 | Button-hole sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201473726U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101608381A (en) * | 2009-07-23 | 2009-12-23 | 浙江胜佳特种缝制设备有限公司 | Buttonhole sewing machine |
-
2009
- 2009-07-23 CN CN200920190132XU patent/CN201473726U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101608381A (en) * | 2009-07-23 | 2009-12-23 | 浙江胜佳特种缝制设备有限公司 | Buttonhole sewing machine |
| CN101608381B (en) * | 2009-07-23 | 2012-11-14 | 浙江胜佳特种缝制设备有限公司 | Buttonhole sewing machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100519 Termination date: 20140723 |
|
| EXPY | Termination of patent right or utility model |