CN1458318A - Differential cloth feeding sewing machine - Google Patents
Differential cloth feeding sewing machine Download PDFInfo
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- CN1458318A CN1458318A CN 03125140 CN03125140A CN1458318A CN 1458318 A CN1458318 A CN 1458318A CN 03125140 CN03125140 CN 03125140 CN 03125140 A CN03125140 A CN 03125140A CN 1458318 A CN1458318 A CN 1458318A
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Abstract
To provide a differential feed sewing machine which can reduce its size and can enhance durability. This differential feed sewing machine is provided with a needle bar mechanism 35, a presser bar 38 which is provided near the mechanism 35, a fabric holder 67 which is arranged below the presser bar 38, a first link 48 for making the presser bar 38 move up and down, a second link 51 which is to be driven by a presser-bar driving cam 55 which is provided in an arm shaft 31, a transfer means 56 for transferring the driving force of the second link 51 to the first link 48, an adjusting means 60 for adjusting the ascent position of the presser bar 38 concurrently with the movement of the second link 51, an upper feed motor 76 which is provided outside a sewing machine head 6, a driving pulley 77 for an upper feed belt 12, which is mounted on the motor 76, a driven pulley 42 for the belt 12, which is provided below the head 6, and the belt 12 which runs between the pulleys 77 and 42.
Description
Technical field
The present invention relates to a kind of by work feed parts up and down differential, cloth is up and down implemented the differential cloth-feeding sewing machine of rivel etc., relate in particular to and use the work feed belt can carry the differential cloth-feeding sewing machine of making thing.
Background technology
Past, have as a kind of industrial sewing machines are known, for example give good hand touch and rivel attractive in appearance in order to locate to be provided with at cuff of the sewing piece of in men's style western-style clothes, women fashionable dress etc. etc., and the differential cloth-feeding sewing machine of when alignment has the cloth end of two blocks of clothes of different selvedge curves, sewing up.
Differential cloth-feeding sewing machine so in the past, for example by a pair of feed preparation unit roller up and down from above-below direction clamping overlapping two blocks of clothes up and down up and down, and change the velocity ratio (applying differential) of two feed preparation unit rollers for the selvedge of sewing up two blocks of clothes, constitute the different work feed of cloth feed amount up and down.
In addition, in differential cloth-feeding sewing machine in the past, drive upward feed preparation unit roller by work feed motor in the special use in order to change above-mentioned velocity ratio.Should go up feed preparation unit roller, when eedle descends and stabs sewing piece, to rise and to leave sewing piece, when eedle rises and leaves sewing piece, descend and the mode of contact sewing piece moves up and down.And each feed preparation unit roller is for smooth and easy and carry out the conveying of sewing piece well, and the outer peripheral face of feed preparation unit roller is made of rubber layer at least.In addition, also oneself knows that the structure of using following work feed belt is arranged to replace following feed preparation unit roller.
And then last feed preparation unit roller is connected on the depression bar, and has the adjusting device of regulating the lifting position of depression bar for the lifting position of regulating feed preparation unit roller.
Yet in above-mentioned differential cloth-feeding sewing machine in the past, last work feed motor and adjusting device are set at the outside of sewing machine frame, therefore, can not realize miniaturization.In addition, because adjusting device is configured in the frame outside of the free-ended head of head of sewing machine, can not install at the Sewing machines head and be used to drive work feed motor on feed preparation unit roller uses, so that the driving force of the last work feed motor that is configured in the frame outside is transferred to the drive path of feed preparation unit roller is elongated, need complicated driving force transmission mechanism simultaneously, can not reach miniaturization, and the loss of driving force becomes big, last feed preparation unit roller is slow for the response of the rotation of last work feed motor, and therefore the problem that can not realize correct work feed is arranged.
In addition, in above-mentioned differential cloth-feeding sewing machine in the past, owing to be provided with rubber layer at the outer peripheral face of last feed preparation unit roller, so this rubber layer has the problem of poor durability by wearing away with making contacting of thing.
The present invention is in view of these problem points, and its objective is provides a kind of Miniaturizable and can reach the differential cloth-feeding sewing machine that improves durability.
And then the harmless lost territory of the driving force that the work feed motor is provided is transformed to cloth feed amount and improves its response.
Summary of the invention
To achieve the above object, being characterized as of the present invention 1 differential cloth-feeding sewing machine, have: but will with last axle interlock and make the shank knee-action needle bar mechanism and supported underneath push the presser feet of making thing, and depression bar that will the setting of knee-action ground be configured in the interior side's of front end head head of sewing machine; Also have:
In the inside of above-mentioned head, be installed on the above-mentioned depression bar and make above-mentioned depression bar knee-action the 1st connecting rod and
The position of leaving above-mentioned head, be configured in the frame and by be located at above-mentioned on the 2nd connecting rod that drives of depression bar driving cam on the axle and
With the driving force transmission of above-mentioned the 2nd connecting rod give above-mentioned the 1st connecting rod transmission device and
Above-mentioned the 2nd connecting rod is installed and follow the 2nd connecting rod the above-mentioned depression bar of mobile adjusting lifting position adjusting device and
Be located at above-mentioned head the outside last work feed motor and
Be installed in last work feed belt on the above-mentioned output shaft of going up the work feed motor use drive pulley and
The last work feed belt that can be rotatably set in the below of above-mentioned head use driven pulley and
Be hung on above-mentioned last work feed belt drive pulley and the above-mentioned last work feed belt of going up between the work feed belt usefulness driven pulley.
And,,,, can reach miniaturization so adjusting device almost all can be put into the inside of head of sewing machine owing on the 2nd connecting rod that is provided with on the position of the head that leaves head of sewing machine, dispose adjusting device by adopting such structure.In addition, can be installed in last work feed motor the side of head thus,, then can reach miniaturization so on the output shaft of last work feed motor, can directly install work feed belt drive pulley.
And then, owing to make thing with drive pulley and last work feed belt with the last work feed belt conveying between the driven pulley by being hung on the above-mentioned work feed belt of going up, so in the loss that can alleviate driving force, the work feed belt is promptly responded for the rotation of last work feed motor, can realize correct work feed.And then, because the girth of last work feed belt is longer than the girth of in the past last feed preparation unit roller, thus last work feed belt reduced by contacting the abrasion of generation with making thing, thereby improved durability.
In addition, the present invention 2 differential cloth-feeding sewing machine, on above-mentioned the present invention 1 basis, it is characterized in that, have: make the knee-action mechanism of work feed belt with the driven pulley knee-action, and the above-mentioned work feed belt of going up of restriction is with drive pulley and the above-mentioned last work feed belt guide roller that rotates freely with the belt path between the driven pulley, with above-mentioned guide roller is installed and when the work feed belt rises with driven pulley on above-mentioned to get above-mentioned on the direction of the work feed belt slack walking bar rod that can joltily be provided with and be installed on the above-mentioned head of sewing machine and install above-mentioned on the last work feed motor erecting bed of work feed motor and above-mentioned walking bar rod.And, by adopting such structure, can improve the assembleability of going up work feed motor and last work feed belt, and realize miniaturization.
In addition, the present invention 3 differential cloth-feeding sewing machine, on above-mentioned the present invention 2 basis, it is characterized in that, above-mentioned walking bar rod is set at above-mentioned below of going up work feed motor erecting bed, the above-mentioned work feed belt of going up, the work feed belt is with driven pulley and above-mentioned guide roller angle each other on above-mentioned, is formed in the scopes with respect to 15～35 degree of horizontal direction.And, by adopting such structure, can reduce bending point number, so can prevent the reduction of the durability brought because of the flexural fatigue of last work feed belt at the belt path of last work feed belt.
In addition, the present invention 4 differential cloth-feeding sewing machine on any one basis, is characterized in that in above-mentioned the present invention 1～3, above-mentioned presser feet is set to, and the mobile route of the eedle of the lower end of above-mentioned shank is disposed at itself and the above-mentioned work feed belt of going up with between the side of driven pulley.And,, can when making, suppress to make rocking of thing, so can form beautiful stitching by adopting such structure.
Description of drawings
Fig. 1 is the major part stereoscopic figure of expression differential cloth-feeding sewing machine embodiment of the present invention.
Fig. 2 is near the left view of Sewing machines head of the differential cloth-feeding sewing machine of Fig. 1.
Fig. 3 is near the amplification stereogram of presser feet of the differential cloth-feeding sewing machine of presentation graphs 1.
Fig. 4 is the stereogram of major part of the head of sewing machine of the expression differential cloth-feeding sewing machine of seeing Fig. 1 from rear side.
Fig. 5 is that near the stereogram Sewing machines head of differential cloth-feeding sewing machine of Fig. 1 is seen in expression from rear side.
Fig. 6 is near the amplification stereogram the bottom of Sewing machines head of differential cloth-feeding sewing machine of Fig. 1.
Fig. 7 is that near the stereogram the depression bar of differential cloth-feeding sewing machine of Fig. 1 is seen in expression from rear side.
Fig. 8 is that near the stereogram the depression bar of differential cloth-feeding sewing machine of Fig. 1 is seen in expression from face side.
Fig. 9 is near the stereogram of upward axle of representing to see from rear side the differential cloth-feeding sewing machine of Fig. 1.
Figure 10 is near the stereogram of last work feed motor of the differential cloth-feeding sewing machine of presentation graphs 1.
Among the figure: 1-differential cloth-feeding sewing machine, 2-sewing machine frame, 3-Sewing machines base plate, 4-head support portion, the 5-head of sewing machine, 6-Sewing machines head, work feed belt under the 10-, cloth feeding mechanism under the 11-, the last work feed belt of 12-, the last cloth feeding mechanism of 13-, 15-rotating shuttle axle bed, work feed motor under the 18-, 24-pin hole, work feed belt driven pulley under the 25-, 27-cloth guide, 30-motor of sewing machine, the last axle of 31-, the 33-shank, 35-needle bar drive device, 38-depression bar, the last work feed belt of 42-driven pulley, 46-depression bar abut, 47-hornblock, 48-the 1st connecting rod, 50-metal wire, 51-the 2nd connecting rod, 52-the 3rd connecting rod, 55-depression bar driving cam, 56-transmission device, the 58-adjustment screw, 59-alignment pin, 60-adjusting device, 61-knee-action mechanism, 67-presser feet, the last work feed motor mount of 75-, the last work feed motor of 76-, the last work feed belt of 77-drive pulley, 78-walking bar rod, the 80-guide roller, BS-base end side, TS-front, the FS-face side, RS-rear side, α-angle.
The specific embodiment
Below, the present invention is described with reference to embodiment shown in the drawings.
As shown in Figure 1, the sewing machine frame 2 of the differential cloth-feeding sewing machine 1 of present embodiment is equipped with Sewing machines base plate 3 in the bottom, at the cardinal extremity that is positioned at this Fig. 1 right side above Sewing machines base plate 3, erects head support portion 4 is being set.Left surface top in this head support portion 4 is stretched out and is formed the head of sewing machine 5 that extends in parallel with Sewing machines base plate 3, and the free end of head of sewing machine 5 is for being also referred to as the Sewing machines head 6 of face etc.
In addition, for convenience of description, being front TS, being base end side BS at the head of sewing machine shown in Fig. 1 right side 5 in Sewing machines head 6 sides shown in Fig. 1 left side, forward side (Fig. 2 right side) with Fig. 1 is face side FS, is rear side RS with the inboard of Fig. 1 (Fig. 2 left side).
Sewing machines base plate 3, head support portion 4 and the head of sewing machine 5 of sewing machine frame 2 that constitutes present embodiment different with in the past, by cast as a whole, its front roughly is integrally formed as roughly コ font.
On above-mentioned Sewing machines base plate 3, setting to have carries cloth etc. to make the following cloth feeding mechanism 11 of the following work feed belt 10 that thing uses, on the Sewing machines head 6 of head of sewing machine 5, setting the last cloth feeding mechanism 13 that the last work feed belt 12 of making thing is carried in following work feed belt 10 coordinations that have with following cloth feeding mechanism 11.
On the front TS of above-mentioned Sewing machines base plate 3, be equipped with rotating shuttle axle bed 15.This rotating shuttle axle bed 15 is generally waited by casting and forms, in the present embodiment, and as required can be integrally formed with sewing machine frame 2.And, on the front side of rotating shuttle axle bed 15, be provided with rotating shuttle installation portion 16.Be positioned at this rotating shuttle installation portion 16 below Sewing machines base plate 3 inside, be provided with down work feed motor installation portion 17.And, on following work feed motor installation portion 17, fixing the output shaft (not shown) of work feed motor 18 towards front TS.On the output shaft of this time work feed motor 18, fixing work feed belt drive pulley 19.
That is, on the output shaft of following work feed motor 18, work feed belt drive pulley 19 is installed down directly, following work feed belt directly rotates driving with drive pulley 19 by following work feed motor 18.
In addition, in the present embodiment, because sewing machine frame 2, promptly, Sewing machines base plate 3, head support portion 4, the head of sewing machine 5 integrated manufacturings by casting are so can have high strength, high rigidity.When integrated, as shown in this embodiment, if constitute rotating shuttle axle bed 15 with Sewing machines base plate 3 other bodies, casting is more easy so, so be desirable.And then, because sewing machine frame 2 is made by integrated casting,, for example, on the bonding part of Sewing machines base plate 3 and head support portion 4, big fillet can be set so also be good in design.In addition, fillet being set not only designing attractive in appearancely, also is being desirable aspect tool high strength, the high rigidity.
In the upper end of above-mentioned rotating shuttle installation portion 16, be equipped with what the horizontal direction parallel with Sewing machines base plate 3 extended and roughly form rotating shuttle cover 20 cylindraceous.That is, devices spaced apart is disposing rotating shuttle cover 20 above Sewing machines base plate 3.On the base end side BS of this rotating shuttle cover 20, be provided with rotating shuttle drive unit 21, can make whole rotation rotating shuttle 22 rotations of the rotating shuttle of the inside that is supported on rotating shuttle cover 20 with rotating freely.In addition, as rotating shuttle drive unit 21, can example illustrate, with with the rotation of the lower shaft of the motor of sewing machine interlock of the inside that is equipped on Sewing machines base plate 3 as drive source, the rotation of lower shaft is transferred to the formation of rotating shuttle by the rotating actuator of belt gear etc., or sets the rotating shuttle motor and directly drive formation of rotating shuttle etc. by the rotating shuttle motor at the base end side BS place of rotating shuttle cover 20.
Top at the base end side BS of the outer peripheral face of above-mentioned rotating shuttle cover 20, as shown in Figure 3, be provided with the pin hole 24 that forms by the through hole that connects at thickness direction,, rotate and freely supporting work feed belt driven pulley 25 than the more forward distolateral TS of this pin hole 24 place.At this time work feed belt with driven pulley 25 and above-mentioned down work feed belt with between the drive pulley 19, as shown in Figure 1, hang with and be used to carry the following work feed belt 10 of making thing.Therefore, on Sewing machines base plate 3, formation can be passed through the following work feed belt reach through hole 26 of work feed belt 10 down.
In addition, as following work feed belt 10, can the illustration toothed timing belt, flat belt, V-shape belt etc.In the present embodiment, with do not produce slide and velocity variations etc. be the reason use be toothed timing belt.What therefore, following work feed belt is all used with driven pulley 25 with drive pulley 19 and following work feed belt is the belt pulley of toothed timing belt.
By above-mentioned down work feed belt 10, down work feed motor 18, the work feed belt cloth etc. that has the conveying present embodiment with drive pulley 19 and following work feed belt with driven pulley 25 formations is made the following cloth feeding mechanism 11 of the following work feed belt 10 that thing uses down.
Top at above-mentioned rotating shuttle cover 20, as shown in Figure 3, setting the cloth guide 27 of the opening 27a with the top of exposing following work feed belt 10 and pin hole 24, when making action, mounting is made thing on cloth guide 27, simultaneously, in the inboard of the opening 27a of cloth guide 27, make thing and carry out work feed in clamping between work feed belt 10 and the last work feed belt 12 down.
By above-mentioned down work feed motor 18, the work feed belt is with drive pulley 19, the work feed belt is with driven pulley 25 and following work feed belt 10 down down, constitute the following cloth feeding mechanism 11 of making the following work feed belt 10 that thing uses with conveying present embodiment.
At the base end side BS place of the inside of above-mentioned head of sewing machine 5, as shown in Figure 4, motor of sewing machine 30 sets its output shaft (not shown) towards front TS.On the output shaft of this motor of sewing machine 30, connecting inside, extending and the cardinal extremity of axle 31 (Fig. 4) on rotation is freely supported as the Sewing machines driving shaft to horizontal direction at head of sewing machine 5.
On the Sewing machines head 6 of above-mentioned head of sewing machine 5, as shown in Figure 6, be equipped with shank 33.This shank 33, the roof by being equipped on Sewing machines head 6 and the conduct of diapire be the shank axle bush 34 of pair of bearings up and down, support slidably along the vertical direction, and by the leading section with last axle 31 is connected, with the known in the past needle bar drive device 35 of last 31 rotation interlock, carry out reciprocating action with prescribed stroke along the vertical direction.In the bottom of this shank 33 locking pin portion 36 is installed, in locking pin portion 36, is fixing the upper end of not shown eedle.This eedle can load and unload as required.
On the next door of above-mentioned shank 33, be equipped with and make its direction of principal axis towards known in the past depression bar 38 above-below direction, that extend in parallel with shank 33.By on the diapire that is equipped on Sewing machines head 6, as the depression bar axle bush 39 of bearing, can be slidably supported this depression bar 38 along the vertical direction.The bottom of this depression bar 38, outstanding downwards from the lower surface of depression bar axle bush 39, the upper end of work feed belt with driven pulley support component 41 is installed.And,, supporting with rotating freely and going up work feed belt driven pulley 42 in the side of last work feed belt with the base end side BS of the face side FS of the forward side of driven pulley support component 41.Should go up work feed belt driven pulley 42, its direction of principal axis is configuration flatly, and the face of its base end side BS is than the more close front TS configuration of the mobile route of eedle.
That is, last work feed belt can be rotatably set in the below of Sewing machines head 6 with driven pulley 42.
On above-mentioned the work feed belt with work feed belt on the driven pulley support component 41 with the rear side RS place of driven pulley 42, as shown in Figure 6, be formed with the guide part 43 that is used for using the belt path on driven pulley 42 next doors from the last work feed belt of the last work feed belt 12 of top restriction.In addition, in the central upper of last work feed belt, setting presser feet and forcing moving pin 44 with the side of the base end side BS of driven pulley support component 41.
At the axial mid portion of above-mentioned depression bar 38, as shown in Figure 7 and Figure 8, depression bar abut 46 is installed, in the side of this depression bar abut 46, shown in Fig. 8 is detailed, hornblock 47 is installed.And, on hornblock 47, the front end of the horizontal arm 48a that extends at front TS, the chimeric hornblock that forms slot part 48aa to an end that roughly is the 1st connecting rod 48 that L font ground forms forkedly.At the middle body of the 1st connecting rod 48, axle is supporting the 1st link supports pin 49 of the inside that is fixed on Sewing machines head 6, and is that the center is setting the 1st connecting rod 48 rotationally with the 1st link supports pin 49.In addition, at the leading section of the upright arm 48b that extends above as the other end of the 1st connecting rod 48, connecting the end of the front TS that is positioned at metal wire 50.
Be positioned at the other end of the base end side BS of above-mentioned metal wire 50, be connected the bottom of the slave arm 51a that extends to the below of the 2nd connecting rod 51 that roughly is the formation of L font ground.Middle body at the 2nd connecting rod 51, axle is supporting the 2nd link supports pin 53 that is fixed on to the leading section of the support arm 52a of as shown in Figure 7 the below extension that roughly is the 3rd connecting rod 52 that T font ground forms, is that the center is equipped with the 2nd connecting rod 51 rotationally with the 2nd link supports pin 53.In addition, fore-end at the actuating arm 51b that extends to the base end side BS of the 2nd connecting rod 51, fixing the base end part of drive pin 54, as shown in Figure 9, be fixed on the depression bar driving cam 55 on the outer peripheral face of axial substantial middle part of axle 31, from contacting the outer peripheral face that can leave this drive pin 54 down.
Thereby, rotation interlock with last axle 31, the actuating arm 51b of the 2nd connecting rod 51, with the 2nd link supports pin 53 is the center knee-action, the knee-action of the actuating arm 51b of the 2nd connecting rod 51, from the actuating arm 51b of the 2nd connecting rod 51, by metal wire 50 after being delivered to the 1st connecting rod 48, be delivered to depression bar 38 by hornblock 47 and depression bar abut 46, make depression bar 38 with the prescribed stroke knee-action.
In addition, withstand the actuating arm 51b of the 2nd connecting rod 51 usually downwards, drive pin 54 is contacted with depression bar driving shaft cam 55 usually by the elastic force of not shown extension spring.
The driving force transmission of the 2nd connecting rod 51 of present embodiment is given the transmission device 56 of above-mentioned the 1st connecting rod 48 by above-mentioned metal wire 50 formations.In addition, also can use bar, chain etc., not be defined in the metal wire 50 of present embodiment especially as transmission device 56.
At the middle body of above-mentioned the 3rd connecting rod 52, axle is supporting the 3rd link supports pin 57 of the inside that is fixed on head of sewing machine 5, is that the center can set the 3rd connecting rod 52 rotationally with the 3rd link supports pin 57.Above the leading section of the regulating arm 52b that the front TS of the 3rd connecting rod 52 extends, contact with the lower surface of alignment pin 59 by adjustment screw 58 knee-actions, by by the upper end of exposing to the outside of blocking adjustment screw 58 from the outside of sewing machine stand 2, and the position of the above-below direction of the lower surface by regulating alignment pin 59 in the mode of rotating, limit with the 3rd link supports pin 57 is the lifting position of the regulating arm 52b of the 3rd connecting rod 52 that rotates of center, simultaneously, shifting axle is supported on the position of the 2nd link supports pin 53 on the 3rd connecting rod 52, can regulate the lifting position (ascending amount) of depression bar 38 thus.
In addition, the regulating arm 52b of the 3rd connecting rod 52, the elastic force by not shown extension spring is forced in the top usually, and the top of leading section of regulating arm 52b contacted with the lower surface of alignment pin 59 usually.
By above-mentioned the 3rd connecting rod 52, adjustment screw 58 and alignment pin 59, the 2nd connecting rod 51 of present embodiment is installed, constitute by moving the 2nd connecting rod 51 and regulate the adjusting device 60 of the lifting position of depression bar 38.
As shown in Figure 4, the Sewing machines head 6 above head of sewing machine 5 leaves base end side BS and is provided with above-mentioned the 2nd connecting rod 51.That is, on the 2nd connecting rod 51 in the head of sewing machine 5 of the sewing machine stand that rich space is relatively arranged 2 that is disposed at the Sewing machines head 6 that leaves head of sewing machine 5, setting adjusting device 60.
By above-mentioned depression bar abut 46, hornblock the 47, the 1st connecting rod 4, metal wire the 50, the 2nd connecting rod the 51, the 3rd connecting rod 52 and depression bar driving shaft cam 55, constitute the knee-action mechanism 61 that the last work feed belt that makes present embodiment is used driven pulley 42 knee-actions.
Be above-mentioned depression bar axle bush 39 outer peripheral face expose externally bottom, as shown in Figure 2, the base portion of presser feet supporter 65 is installed.The front end of this presser feet supporter 65 extends to the rear side RS of depression bar 38 below, at its leading section, the substantial middle part of the presser feet back shaft 66 that extends to the direction parallel with Sewing machines base plate 3 is installed.
At the front TS place of above-mentioned presser feet back shaft 66, shown in Fig. 8 is detailed, the base portion 67a of presser feet 67 is installed.In addition, base end side BS place at presser feet back shaft 66, be installed with by being turned round the force application spring 68 that helical spring etc. is formed, by the elastic force of force application spring 68, form usually the free end that is positioned at face side FS, to the clockwise application of force that is the center with presser feet back shaft 66, sees from front TS to presser feet 67.
Above-mentioned presser feet 67, shown in Fig. 3 is detailed, has the base portion 67a that is supported on presser feet back shaft 66 by axle, with the basis of after extending upward, extending downwards again from this base portion 67a form protrusion roughly towards above circular-arc arch portion 67b and from the leading section of this arch portion 67b form downwards protrusion roughly towards the circular-arc cloth contact site 67c of below.And, make presser feet 67 cloth contact site 67c following, contact with the top of rotating shuttle cover 20 on pin hole 24 next doors usually with the elastic force of force application spring 68.In addition, front TS side at the position that the rotating shuttle cover 20 with cloth contact site 67c contacts, be provided with in the mode of exposing pin hole 24 and connect the pin that the plane roughly is on the thickness direction (above-below direction) that コ font ground forms and pass through groove 67d, 3 sides of the front TS on every side that makes thing in the time of can pushing except sewing from the top with the elastic force of force application spring 68, the while can be guaranteed the mobile route of the eedle of knee-action when sewing.And then, as shown in Figure 6, and be positioned at the above-mentioned relative front TS side that cloth contact site 67c is set to ground of front end face of going up the work feed belt with the base end side BS of driven pulley 42.
That is, and last work feed belt with between the side of driven pulley 42, the mobile route of eedle that is disposed at the lower end of shank 33 is provided with presser feet 67.
On the arch portion 67b of above-mentioned presser feet 67, shown in Fig. 3 is detailed, be provided with rationed marketing connecting portion 69, in the substantial middle portion of this pin connecting portion 69, be provided with the tetragonal moving pin that is roughly that is installed with presser feet pressure moving pin 44 and insert perforation 69a.And moving pin is inserted the size of above-below direction of perforation 69a than big a little with the stroke of the depression bar 38 of above-mentioned rotatablely move interlock and the knee-action of going up axle 31, and the knee-action of depression bar 38 makes presser feet 67 motionless when making.
Above-mentioned depression bar 38 and presser feet 67, in mounting sewing piece on cloth guide 27, perhaps carry out eedle exchange time etc., as required, can be moved upward significantly simultaneously with the presser foot lifting lever 70 of the bottom of rotating the rear side RS that is configured in Sewing machines head 6 by staff.At this moment, presser feet 67 is forced the top of moving pin 44 and the slotting perforation of moving pin 69a to contact by presser feet and is risen, and the cloth contact site 67c of presser feet 67 does bigger rising to the roughly top of pin hole 24.In addition, using the drive unit of solenoid etc. also can constitute rises depression bar 38 and presser feet 67 simultaneously.At this moment, also can and use presser foot lifting lever 70 and solenoid.
In the rear side RS side of above-mentioned Sewing machines head 6, as shown in Figure 2, work feed motor mount 75 is installed, on this on work feed motor mount 75, as shown in figure 10, make its output shaft 76a towards front TS work feed motor 76 is installed.On this, on the output shaft 76a of work feed motor 76, decide work feed drive pulley 77 in the set.That is, work feed belt drive pulley 77 is being installed directly on the output shaft 76a of last work feed motor 76, last work feed belt directly rotates driving with drive pulley 77 by last work feed motor 76.On this work feed with drive pulley 77 and above-mentioned on the work feed belt with between the driven pulley 42, be linked with to carry and make the last work feed belt 12 that thing is used.
In addition, as last work feed belt 12 can the illustration toothed timing belt, flat belt, V-shape belt etc.In the present embodiment, be that reason is used toothed timing belt not produce slip and velocity variations etc.What therefore, use with driven pulley 42 with drive pulley 77 and last work feed belt for last work feed belt is the belt pulley of toothed timing belt.
By above-mentionedly go up work feed belt 12, go up the work feed belt with driven pulley 42, go up work feed motor 76 and last work feed and have to carry the last cloth feeding mechanism 13 of the last work feed belt 12 of making thing with following work feed belt 10 coordinations of the following cloth feeding mechanism 11 of present embodiment with drive pulley, formation.
The bottom of work feed motor mount 75 on above-mentioned, as Figure 10 in detail shown in, by the walking bar rod supporting pin 79 rotatable tops that the walking bar rod 78 of shape roughly triangular in shape ground formation freely is installed.Face side FS and central portion two places in the bottom of the side of the front TS that is positioned at this walking bar rod 78, the rotation that the double as tensioner is installed is guide roller 80 freely, goes up the work feed belt with belt path between the drive pulley 77 of driven pulleies 42 and last work feed belt by these guide rollers 80 restrictions.In addition, guide roller 80, the last work feed belt of last work feed belt 12 with the angle [alpha] at the position of Sewing machines base plate 3 sides between driven pulley 42 and the guide roller 80, be limited to 15～35 degree, be preferably in the scopes of 23～28 degree with respect to horizontal direction.When the angle [alpha] of work feed belt 12 on this is bigger than above-mentioned scope, the shank 33 of belt path and knee-action has the possibility of mutual interference, so reaching the number of bends that is necessary to increase the number of guide roller 80 aspect the miniaturization and increases belt path, so then shortening the durability of last work feed belt 12.In addition, when the angle [alpha] of last work feed belt 12 than above-mentioned scope hour, though can prevent the interference of the shank 33 of belt path and knee-action, the position of guide roller 80 is near cloth guide 27, promptly near Sewing machines base plate 3, then the danger with the interference of making thing uprises.
Rear side RS place in the side of the front TS that is positioned at above-mentioned walking bar rod 78 is equipped with the 1st link rod plate supporting pin 81, and at the leading section of the 1st link rod plate supporting pin 81, axle is supporting an end of link rod plate 82 (Fig. 2).And, the other end of link rod plate 82 is supported on by axle and is equipped on the above-mentioned leading section of going up the work feed belt with the 2nd link rod plate supporting pin 83 (Fig. 2) of the front TS side of driven pulley support component 41, the knee-action interlock of the shank 33 when making, can make walking bar rod 78 is that the center is shaken with walking bar rod supporting pin 79.
That is, walking bar rod 78, when the work feed belt rose with driven pulley 42 on above-mentioned, being the center with walking bar rod supporting pin 79 moved towards the direction of leaving eedle of rear side RS.
Thereby when last work feed belt rose with driven pulley 42, the direction that the work feed belt 12 that makes progress relaxes can joltily be provided with walking bar rod 78.
Other formation is just omitted its detailed description because identical with in the past differential cloth-feeding sewing machine.
Below, to describing by the above-mentioned effect that constitutes the present embodiment that obtains.
The work feed of differential cloth-feeding sewing machine 1 when sewing by present embodiment, be that mounting is made thing on cloth guide 27, simultaneously, will make thing and be clamped between following work feed belt 10 and the last work feed belt 12, and be undertaken by work feed belt 10 under rotation drives respectively and last work feed belt 12.At this moment, to by the speed of the following following work feed belt 10 of the drive force of work feed motor 18 with by the speed of the last work feed belt 12 of the drive force of last work feed motor 76, impose differentially by the setting speed ratio, can have in alignment with this and to sew up when two of different selvedge curves make the selvedge of cloth of thing.In addition, the presser feet 67 when making, whether knee-action all remains on the state of making thing of pushing down regardless of eedle.And then, work feed belt driven pulley 42 on when making, by knee-action mechanism 61, be controlled to be to stab to rise and work feed belt 12 is left when making thing and make thing at eedle, leave at eedle and make thing and make 12 contacts of work feed belt make thing when rising.Thus, as implied above, to having two work feeds separately of making thing of different selvedge curves, can be controlled to be in the alignment selvedge and sew up.
Differential cloth-feeding sewing machine 1 according to present embodiment, because on locational the 2nd connecting rod 51 that is disposed at the Sewing machines head 6 that leaves head of sewing machine 5, be equipped with adjusting device 60, so can be roughly with adjusting device 60 folding and unfoldings in the inside of head of sewing machine 5, can reach miniaturization.Thus, owing to can be installed in the side of Sewing machines head 6,, can reach miniaturization so on the output shaft 76a of last work feed motor 76, can directly install the work feed belt with drive pulley 77 with going up work feed motor 76.
In addition, differential cloth-feeding sewing machine 1 according to present embodiment, owing to carry with the last work feed belt 12 between the driven pulley 42 with drive pulley 77 and last work feed belt and make thing by being hung on the work feed belt, so in the loss that can alleviate driving force, can make work feed belt 12 make response rapidly, so can realize correct work feed to the rotation of last work feed motor 76.
And then, according to the differential cloth-feeding sewing machine 1 of present embodiment because the girth of last work feed belt 12 is longer than the girth of in the past last feed preparation unit roller, so thereby can reduce because of last work feed belt 12 with make the abrasion raising durability that contacting of thing produces.
And then, differential cloth-feeding sewing machine 1 according to present embodiment, make the knee-action mechanism 61 of work feed belt owing to have with driven pulley 42 knee-actions, and rotation that the work feed belt uses the belt path between the drive pulley 77 with driven pulley 42 and last work feed belt guide roller 80 is freely gone up in restriction, the walking bar rod 78 that the direction that the work feed belt 12 that makes progress with installation guide roller 80 and when last work feed belt rises with driven pulley 42 relaxes can joltily be provided with, with be installed on the head of sewing machine 5 and install work feed motor 76 and the last work feed motor mount 75 of walking bar rod 78, so on improving, in the assembling of work feed motor 76 and last work feed belt 12, more can reach miniaturization.
In addition, differential cloth-feeding sewing machine 1 according to present embodiment, because walking bar rod 78 is set at the below of work feed motor mount 75, last work feed belt 12, in last work feed belt with the angle [alpha] at the position of Sewing machines base plate 3 sides between driven pulley 42 and the guide roller 80, form with respect to horizontal direction in the scopes of 15～35 degree, so can reduce the number of the bending point on the belt path of last work feed belt 12, can prevent to reduce durability because of the flexural fatigue of last work feed belt 12.
And then, differential cloth-feeding sewing machine 1 according to present embodiment, presser feet 67 is set to, and last work feed belt with between the side of driven pulley 42, the mobile route of the eedle of the lower end of configuration shank 33 at length is, and last work feed belt with between the side of driven pulley 42, the mobile route of the eedle of the lower end of configuration shank 33, thus when making, can suppress to make rocking of thing, thus can form beautiful stitching.
In addition, differential cloth-feeding sewing machine 1 according to present embodiment, because head of sewing machine 5 and Sewing machines base plate 3 be by casting integrated formation, thus can make the integral body of sewing machine frame 2 integrated easily, thus can realize reducing number of parts and reduction financial burden easily.
In addition, the invention is not restricted to the content of the foregoing description, can do various changes as required.
(invention effect)
According to the present invention's 1 of above explanation differential cloth-feeding sewing machine, can obtain to realize miniaturization and improve the extraordinary effect of durability etc.
In addition, 2 the differential cloth-feeding sewing machine according to the present invention on improving in the assembly performance of work feed motor and last work feed belt, can obtain more can realizing the extraordinary effect of miniaturization etc.
In addition, 3 the differential cloth-feeding sewing machine according to the present invention owing to can reduce the number of the bending point on the belt path of last work feed belt, reduces the extraordinary effect of durability etc. so can obtain to prevent flexural fatigue because of last work feed belt.
In addition, 4 the differential cloth-feeding sewing machine according to the present invention is owing to can suppress to make rocking of thing, so can obtain to form the extraordinary effect of beautiful stitching etc. when making.
Claims (4)
1. differential cloth-feeding sewing machine has: but will with last axle interlock and make the shank knee-action needle bar mechanism and supported underneath push the presser feet of making thing, and depression bar that will the setting of knee-action ground be configured in the interior side's of front end head head of sewing machine; It is characterized in that having:
In the inside of described head, be installed on the described depression bar and make described depression bar knee-action the 1st connecting rod and
The position of leaving described head, be configured in the frame and by be located at described on the 2nd connecting rod that drives of depression bar driving cam on the axle and
With the driving force transmission of described the 2nd connecting rod give described the 1st connecting rod transmission device and
Described the 2nd connecting rod is installed and follow the 2nd connecting rod the described depression bar of mobile adjusting lifting position adjusting device and
Be located at described head the outside last work feed motor and
Be installed in last work feed belt on the described output shaft of going up the work feed motor use drive pulley and
The last work feed belt that can be rotatably set in the below of described head use driven pulley and
Be hung on described last work feed belt drive pulley and the described last work feed belt of going up between the work feed belt usefulness driven pulley.
2. according to the described differential cloth-feeding sewing machine of claim 1, it is characterized in that having:
Make described knee-action mechanism of going up the work feed belt with the driven pulley knee-action, and limit described go up the work feed belt with drive pulley and described on the work feed belt with the guide roller that rotates freely of the belt path between the driven pulley and
Described guide roller is installed and when the work feed belt rises with driven pulley on described to get described on the direction of the work feed belt slack walking bar rod that can joltily be provided with and
Be installed on the described head of sewing machine and the described last work feed motor erecting bed of going up work feed motor and described walking bar rod is installed.
3. according to the described differential cloth-feeding sewing machine of claim 2, it is characterized in that: described walking bar rod, be set at described below of going up work feed motor erecting bed,
The described work feed belt of going up, the work feed belt is formed in the scopes with respect to 15～35 degree of horizontal direction with driven pulley and described guide roller angle each other on described.
4. according to any described differential cloth-feeding sewing machine in the claim 1～3, it is characterized in that: described presser feet is set to, and the mobile route of the eedle of the lower end of described shank is disposed at itself and the described work feed belt of going up with between the side of driven pulley.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002137404A JP3946083B2 (en) | 2002-05-13 | 2002-05-13 | Differential feed sewing machine |
| JP2002137404 | 2002-05-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1458318A true CN1458318A (en) | 2003-11-26 |
| CN100503937C CN100503937C (en) | 2009-06-24 |
Family
ID=29544868
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB031251404A Expired - Lifetime CN100503937C (en) | 2002-05-13 | 2003-05-12 | Differential cloth feeding sewing machine |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP3946083B2 (en) |
| CN (1) | CN100503937C (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1550604B (en) * | 2003-04-21 | 2010-04-28 | 重机公司 | Differential cloth-feed sewing machine |
| CN1847500B (en) * | 2005-04-14 | 2011-05-04 | 重机公司 | Differential feed sewing machine |
| CN101037833B (en) * | 2006-03-17 | 2011-07-06 | 兄弟工业株式会社 | Feeding device for pattern sewing machine |
| CN101381931B (en) * | 2008-08-21 | 2012-03-07 | 启翔针车（上海）有限公司 | Differential feed controlling mechanism for sewing machine |
| CN110453380A (en) * | 2019-07-03 | 2019-11-15 | 莆田城厢晟铭网络有限公司 | The weaving comprehensive feed flat sewing machine of three needles of fixed point principle is vibrated using exchange |
| CN111534936A (en) * | 2020-06-03 | 2020-08-14 | 张金法 | Feeding transmission device for column type sewing machine |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006102400A (en) * | 2004-10-08 | 2006-04-20 | Juki Corp | Sewing machine |
| CN104674464B (en) * | 2015-01-04 | 2017-02-22 | 太仓梓林工业缝纫机械有限公司 | Feeder for sewing machine |
| CN104674465A (en) * | 2015-01-04 | 2015-06-03 | 太仓梓林工业缝纫机械有限公司 | Top feeder for sewing machine |
| CN106835517B (en) * | 2017-03-09 | 2023-01-31 | 广东溢达纺织有限公司 | Automatic pressure shoe lifting mechanism and sewing machine |
| CN111379085A (en) * | 2019-12-02 | 2020-07-07 | 浙江广和缝纫机有限公司 | Pressure adjusting device for presser foot of sewing machine |
| CN113818155B (en) * | 2021-10-08 | 2022-12-27 | 武汉纺织大学 | Folding and forming system for placket and using method thereof |
-
2002
- 2002-05-13 JP JP2002137404A patent/JP3946083B2/en not_active Expired - Lifetime
-
2003
- 2003-05-12 CN CNB031251404A patent/CN100503937C/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1550604B (en) * | 2003-04-21 | 2010-04-28 | 重机公司 | Differential cloth-feed sewing machine |
| CN1847500B (en) * | 2005-04-14 | 2011-05-04 | 重机公司 | Differential feed sewing machine |
| CN101037833B (en) * | 2006-03-17 | 2011-07-06 | 兄弟工业株式会社 | Feeding device for pattern sewing machine |
| CN101381931B (en) * | 2008-08-21 | 2012-03-07 | 启翔针车（上海）有限公司 | Differential feed controlling mechanism for sewing machine |
| CN110453380A (en) * | 2019-07-03 | 2019-11-15 | 莆田城厢晟铭网络有限公司 | The weaving comprehensive feed flat sewing machine of three needles of fixed point principle is vibrated using exchange |
| CN111534936A (en) * | 2020-06-03 | 2020-08-14 | 张金法 | Feeding transmission device for column type sewing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3946083B2 (en) | 2007-07-18 |
| JP2003326032A (en) | 2003-11-18 |
| CN100503937C (en) | 2009-06-24 |
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