CN1207426A - Staight needle overlock sewing machine - Google Patents
Staight needle overlock sewing machine Download PDFInfo
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- CN1207426A CN1207426A CN 98115104 CN98115104A CN1207426A CN 1207426 A CN1207426 A CN 1207426A CN 98115104 CN98115104 CN 98115104 CN 98115104 A CN98115104 A CN 98115104A CN 1207426 A CN1207426 A CN 1207426A
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Abstract
The invention provides a presser member of needle overlock sewing machine to prevent the deviation of a sewing member when overlock stitch and avoid corrugation to sufficiently secure the large vertical moving range of the presser member, which is characterized in the presser member 6 to be moved to a sawing machine front part side in accordance with its elevating quantity.
Description
The present invention relates to a kind of cloth presser of Staight needle overlock sewing machine, particularly relate to a kind of cloth presser that is suitable for Staight needle overlock sewing machine in the overlock machine that pin vertically moves up and down with respect to the loading surface of material to be sewn.
In the past, adopted overlock machine as being used to form the Sewing machines of needle tracking with the end of stitching material to be sewn.Figure 16-18 has represented this overlock machine in the past cloth presser 1, pin 2 and relation between the hook circle device 3,4 up and down when making.
At first, according to Figure 16 the cloth presser 1 of in the past overlock machine is described.
In addition, aforementioned cloth presser feet 6 is bearing in an end of depression bar 10, usually depression bar 10 is pushed to the below by the stage clip 9 of pressure bar 8, and transmits the elastic force of aforementioned stage clip 9 by this depression bar 10, thereby material to be sewn such as grey cloth stably are pressed on the loading surface.Have, aforementioned stage clip is made of spiral spring etc. again.In addition, the other end of aforementioned depression bar 10 links to each other with the bend 11a of compacting pivoted arm 11 by pin 12 and is that the center rotates with the vertical axis.This is in order laterally to avoid not hinder the cause of cloth presser feet 6 when the threading operation.Aforementioned compacting pivoted arm 11 is with its rotating shaft 13 that is the center is done freely to rotate of the heart is integral to extend also on the horizontal axis, as shown in figure 16, meet at right angles and stretch out with respect to aforementioned rotating shaft 13, therefore be positioned at than the rotating shaft 13 of aforementioned depression bar 10 and also want on the position of top towards the top.In addition, an end of separating pressure arm 14 is fixed in the aforementioned rotating shaft 13, and simultaneously, this other end of separating pressure arm 14 links to each other with pedal 16 by chain 15.Guide the aforementioned pressure arm 14 of separating into below by the user with the aforementioned chain 15 of foot-operated these pedal 16 tractions, aforementioned rotating shaft 13 is rotated towards the counter clockwise direction of Figure 16.Along with this rotating shaft 13 is rotated towards counter clockwise direction, rotate towards Figure 16 left the upper end of aforementioned compacting pivoted arm 11, and an end that makes aforementioned depression bar 10 rises while the active force of the stage clip 9 that overcomes aforementioned pressure bar 8, and then aforementioned cloth presser feet 6 and line slide unit 7 are risen simultaneously.
At this moment, aforementioned cloth presser feet 6 is along with being that the rising that circular motion is done at the center is moved towards Sewing machines rear side (left side of Figure 16) with rotating shaft 13.
The cloth presser of overlock machine like this, is in the past selectively changed the state of compacting material to be sewn 5 and the state of decompress(ion) material to be sewn 5.
Thereby, when being arranged on material to be sewn 5 on the loading surface X, material to be sewn 5 can not suppressed with the mode that pin 2 lifts in the time of can extracting from material to be sewn 5 with pin 2, and suitable pressure that can entanglement with direction when sending material to be sewn 5 before or after the present dynasty is close on the feed dog material to be sewn.
Below, to overlock machine make the action describe.
In overlock machine, there is pin 2 and moves back and forth and pin 2 moves back and forth both of these case with respect to carrying a cloth cover X with vertical direction with the direction that tilts with respect to carrying cloth cover X.Figure 17 (a) and (b) be respectively body left side finding view from the past overlock machine, and from positive finding view, in this overlock machine in the past, pin 2 is moving back and forth with respect to carrying in the face that cloth cover becomes 70 ° of inclinations.In addition, Figure 18 represents the Sewing machines that pin 2 moves back and forth with the vertical direction work with respect to loading surface X, and Figure 18 (a) is the left side finding view from sewing machine body, and Figure 18 (b) is from positive finding view.In these figure, except the motion track 17 of pin 2, also show the circle device 3 of rising to the bait and reach the motion track 18,19 of hook circle device 4 down, but also show the track 20 that moves up and down of aforementioned line slide unit 7.The aforementioned circle device of rising to the bait is used to catch down suture (not shown), and aforementioned hook circle device 4 down is used to catch needlework.Aforementioned pin 2 is caught and is gone up suture (not shown).
As Figure 17 (a) and (b), be moved upwards up to the way of Sewing machines rear side (cloth feeding direction) below year cloth cover X at following hook circle device 4, the aforementioned circle device 3 of rising to the bait is caught suture down.Equally, as Figure 17 (a) and (b), following hook circle device 4 is caught needlework (not shown) in the way that moves to pin 2 rear sides from left to right below year cloth cover X.And aforementioned pin 2 is caught suture at aforementioned machine rear side of rising to the bait circle device 3 with respect to carrying cloth cover X on the edge in the way that cloth feeding direction becomes the path of 70 ° of inclinations to move back and forth.
Reach the brosser point that the co-operating of hook circle device 4 down forms material to be sewn 5 by above such pin 2, the circle device 3 of rising to the bait.Owing to form needle tracking like this by overlock machine, the aforementioned circle device 3 of rising to the bait must be from the rear side of pin 2 by to the front side, still because aforementioned pin 2 becomes 70 ° of inclination knee-actions with respect to carrying a cloth cover, aforementioned rise to the bait circle device 3 can be at vertical in-plane moving.At this moment, owing to the line slide unit 7 that is fixed on the aforementioned cloth presser feet 6 moves up and down the position near the aforementioned circle device 3 of rising to the bait, and aforementioned line slide unit 7 moves in the approximate vertical face respectively with the circle device 3 of rising to the bait, thereby both can not collide.Therefore, can guarantee that the ascending amount of aforementioned cloth presser feet 6 is bigger.
, in the overlock machine that is constituted by this inclined needle 2 in the past since exist because of pin 2 when reciprocating the component of horizontal direction act on the material to be sewn 5, make material to be sewn 5 dislocation and the needle tracking condition of poor take place.This just becomes material to be sewn meeting wrinkle, so-called wrinkling reason.In addition, also exist when making thick article because excessive stress acts on the pin 2 situation that pin 2 can fracture.
For fear of this class problem, as Figure 18 (a) and (b), can consider to adopt the overlock machine that constitutes by staight needle, wherein, pin 2 moves in the vertical direction with respect to carrying cloth cover X, according to by this staight needle 2 formed overlock machines, the masterpiece that does not have horizontal direction is used on the material to be sewn 5, thereby can prevent that wrinkling and pin from fractureing.
But, in by the overlock machine that staight needle constituted in the past, exist ascending amount with cloth presser feet 6 and be constrained to than by the also little such problem of the formed overlock machine of inclined needle.That is as Figure 18 (a) and (b), the overlock machine that staight needle 2 is constituted is the same with inclined needle 2 formed overlock machines, and in order to form needle tracking, the aforementioned circle device 3 of rising to the bait must move on to the front side from the rear side of pin 2.At this moment, because pin 2 vertically moves with respect to carrying a cloth cover X, compare during with inclined needle 2, the aforementioned circle device 3 of rising to the bait also moves on to machine more front side (Figure 17 (a) compares with Figure 18 (a)), owing to this situation, can move on to aforementioned line slide unit directly over the position.Therefore, when aforementioned cloth presser feet 6 risings were higher, aforementioned line slide unit 7 will collide with aforementioned hook circle device 3.Thereby, for fear of this situation, the ascending amount of aforementioned cloth presser feet 6 is constrained to littler than the overlock machine of inclined needle 2, like this, be not easy to the discrepancy of cloth, and, material to be sewn such as thick thing can not be inserted under the cloth presser feet.
In view of this problem, the purpose of this invention is to provide the cloth presser of Staight needle overlock sewing machine, the material to be sewn dislocation that can avoid when making overseam being produced also can prevent wrinklingly, can guarantee that the scope that moves up and down of compress member is bigger simultaneously.
For realizing this purpose, the feature of the cloth presser of the Staight needle overlock sewing machine of being put down in writing in the claim 1 of the present invention is, make aforementioned cloth presser from aforementioned loading surface rise or drop on the aforementioned loading surface compacting up and down mechanism have the structure that ascending amount according to aforementioned compress member makes its side shifting before the overlock machine.According to this structure, can prevent from can not come in contact to collide also when the compress member from rising to guarantee that the scope that moves up and down of compress member is bigger with the circle device of rising to the bait, can suppress and prevent the needle tracking dislocation to the material to be sewn that enters simultaneously.
The feature of the cloth presser of the Staight needle overlock sewing machine that claim 2 is put down in writing is, aforementioned compacting mechanism up and down has when aforementioned compress member knee-action, the structure that aforementioned line slide unit can the mobile route not related with the mobile route of the circle device of rising to the bait constitutes.According to this structure, can prevent from can not come in contact to collide also when the compress member from rising to guarantee that the scope that moves up and down of compress member is bigger with the circle device of rising to the bait.
The feature of the cloth presser of the Staight needle overlock sewing machine that claim 3 is put down in writing is, mechanism is by depression bar and the rotating shaft of aforementioned compress member supporting at front end constituted about the aforementioned compacting, wherein, this rotating shaft is connected on the depression bar rear end, and is that the center is rotatably supported on the frame with the trunnion axis of aforementioned depression bar top.According to this structure,, just can prevent from can not come in contact to collide also when the compress member from rising to guarantee that the scope that moves up and down of compress member is bigger with the circle device of rising to the bait by structure in the past not being made the simple structure of big change.
Right wants the feature of the cloth presser of 4 Staight needle overlock sewing machines of putting down in writing to be, aforementioned compacting up and down mechanism has the front and back actuating mechanism that ascending amount according to aforementioned compress member makes its side shifting before the overlock machine.According to this structure,, just can prevent from can not come in contact to collide also when the compress member from rising to guarantee that the scope that moves up and down of compress member is bigger with the circle device of rising to the bait by structure in the past not being made the simple structure of big change.
Fig. 1 is from the being seen key diagram in the cloth feeding direction of example 1 left side in first embodiment of the cloth presser of Staight needle overlock sewing machine of the present invention.
Fig. 2 is that the pin of example 1 in first embodiment of the invention, the circle device of rising to the bait reach the front elevation of hook circle device down.
Fig. 3 is the left side view of the circle device of rising to the bait of example 1 in first embodiment of the invention.
Fig. 4 is that the left and right sides pin of example 1 in first embodiment of the invention reaches the left side view of hook circle device down.
Fig. 5 is illustrated in the first embodiment of the invention from the being seen pin in overlock machine front side of example 1, the key diagram of rising to the bait and enclosing device, descending each track of hook circle device and line slide unit.
Fig. 6 is illustrated in the first embodiment of the invention from the being seen pin in overlock machine left side of example 1, the key diagram of rising to the bait and enclosing device, descending each track of hook circle device and line slide unit.
Fig. 7 is from the being seen key diagram in the cloth feeding direction of example 2 left side in first embodiment of the invention.
Fig. 8 is from the being seen key diagram in the cloth feeding direction of example 3 left side in first embodiment of the invention.
Fig. 9 is from the being seen key diagram in the cloth feeding direction of example 4 left side in first embodiment of the invention.
Figure 10 is from the being seen key diagram in the cloth feeding direction of example 5 left side in first embodiment of the invention.
Figure 11 is from the being seen key diagram in the cloth feeding direction of example 6 left side in first embodiment of the invention.
Figure 12 is from the being seen key diagram in the cloth feeding direction of example 7 left side in first embodiment of the invention.
Figure 13 is the being seen key diagram in cloth feeding direction left side from second embodiment of the cloth presser of Staight needle overlock sewing machine of the present invention.
Figure 14 is the being seen key diagram in cloth feeding direction left side from the 3rd embodiment of the cloth presser of Staight needle overlock sewing machine of the present invention.
Figure 15 is from the being seen key diagram in Figure 14 top.
Figure 16 is the being seen key diagram in cloth feeding direction left side from the cloth presser of in the past overlock machine.
Figure 17 (a) is expression from the being seen pin in cloth feeding direction left side of the overlock machine of in the past inclined needle, the circle device of rising to the bait, the key diagram of each motion track of hook circle device and line slide unit down, (b) be expression from the front being seen pin, the circle device of rising to the bait, the key diagram of each motion track of hook circle device and line slide unit down.
Figure 18 (a) is expression from the being seen pin in cloth feeding direction left side of the overlock machine of in the past staight needle, the circle device of rising to the bait, the key diagram of each motion track of hook circle device and line slide unit down, (b) be expression from the front being seen pin, the circle device of rising to the bait, the key diagram of each motion track of hook circle device and line slide unit down.
Below referring to Fig. 1-Figure 15 first embodiment of the cloth presser of Staight needle overlock sewing machine of the present invention is explained.
The structure identical or suitable with the cloth presser of in the past Staight needle overlock sewing machine illustrates with same-sign.
The first embodiment of the present invention is such: according to the rising of aforementioned compress member, rise while make the compress member move to the machine front side.Example 1-7 shown in the following basis specifies this first embodiment.
Example 1-7 shown in the following basis specifies this first embodiment.
Example 1 in Fig. 1-6 expression first embodiment of the present invention, Fig. 1 is the being seen left side view in cloth feeding direction left side from example 1, Fig. 2-the 4th, about pin 2, rise to the bait the circle device and the following key diagram of the structure of hook circle device 4, Fig. 5 and Fig. 6 are expression pins 2, the circle device 3 of rising to the bait, each motion track of hook circle device 4 and line slide unit 7 down.
As shown in Figure 1, the cloth presser 1 of the Staight needle overlock sewing machine of example 1 has cloth presser feet 6, this cloth presser feet 6 is as the compress member that material to be sewn such as cloth 5 is pressed in loading surface X (above the needle plate), form the pin that falls (pin falls) portion that is divided into two strands by this cloth presser feet 6, near this falls pin portion, fix wired slide unit 7.In addition, be connected with an end of depression bar 10 on the aforementioned cloth presser feet 6, depression bar 10 is pressed to the below by the stage clip 9 of pressure bar 8 usually, and transmits the elastic force of aforementioned stage clip 9 by this depression bar 10, thereby material to be sewn such as grey cloth stably are pressed on the loading surface.In addition, the other end of aforementioned depression bar 10 links to each other with the bend 11a of compacting pivoted arm 11 by pin 12 and can vertical axis be that the center rotates.This is in order laterally to avoid not hinder the cause of cloth presser feet 6 when the threading operation.Aforementioned compacting pivoted arm 11 is integral with rotating shaft 13, and this rotating shaft 13 is that the center is done to extend freely to rotate with the horizontal axis, as shown in figure 11, meets at right angles and stretches out towards the top with respect to aforementioned rotating shaft 13.Be that rotating shaft 13 is positioned at than aforementioned depression bar 10 and also wants on the position of top.For this reason, the center of rotation of aforementioned depression bar 10 be arranged at above aforementioned year cloth cover X than in the past more above.In addition, an end of separating pressure arm 14 is fixed in the aforementioned rotating shaft 13, and simultaneously, the other end that pedal 16 is separated pressure arm 14 by chain 15 and this links to each other.Guide the aforementioned pressure arm 14 of separating into below by the user with the aforementioned chain 15 of foot-operated these pedal 16 tractions, aforementioned rotating shaft 13 is rotated towards the counter clockwise direction of Fig. 1, aforementioned compacting pivoted arm 11 is rotated in the same way, and aforementioned depression bar 10 rises while stage clip 9 power that overcome aforementioned pressure bar 8, and then aforementioned cloth presser feet 6 and line slide unit 7 rise simultaneously towards arrow A.Constitute compacting mechanism up and down by these pedals 16, rotating shaft 13 and compacting pivoted arm 11 etc.
Below, to overlock machine make the effect describe.
According to the cloth presser 1 of overlock machine of the present invention, because the effect of the stage clip 9 of aforementioned pressure bar 8 is pressed in aforementioned cloth presser feet 6 on the material to be sewn 5 by aforementioned depression bar 10.Thus, when material to be sewn 5 being clamped between loading surface X and the cloth presser feet 6 and in the time of stable, material to be sewn 5 can not suppressed with the mode that pin 2 lifts in the time of can extracting from material to be sewn 5 with pin 2, and the suitable pressure that direction can entanglement in the time of can sending material to be sewn 5 with present dynasty the place ahead or rear is close on the feed dog material to be sewn.
To material to be sewn 5 decompress(ion)s the time, step on aforementioned pedal 16 by the user, draw aforementioned chain 15 and with aforementioned separate pressure arm 14 guide into the below, aforementioned rotating shaft 13 will counterclockwise be rotated.Along with the aforementioned compacting pivoted arm 11 of the rotation of this rotating shaft 13 also rotates, thereby stage clip 9 power of the aforementioned pressure bar 8 in end of coupled aforementioned depression bar 10 and rising, and then aforementioned cloth presser feet 6 and line slide unit 7 move up and separate with material to be sewn 5, thereby remove the compacting to material to be sewn 5.At this moment, aforementioned cloth presser feet 6 is by be that rotate and along with its rising side shifting before the overlock machine at the center with rotating shaft 13.
Like this, this example 1 can selectively be changed the state of compacting material to be sewn 5 and the state of decompress(ion) material to be sewn.
Then, explain referring to the pin of Fig. 2-4 pair this example 1 employed overlock machine, the position relation of rise to the bait circle device 3 and following hook circle device 4.
Fig. 2 is the pin of aforementioned overlock machine, the front elevation of rise to the bait circle device 3 and hook circle device 4, and Fig. 3 rises to the bait to enclose the left side view of device 3, and Fig. 4 is the left side view of left and right sides pin 2a, 2b and following hook circle device 4.
As shown in Figure 2, two pins 2 that are made of right pin 2a and left pin 2b are arranged on the shank 21, and simultaneously, this shank 21, and is vertically back and forth moved up and down with respect to carrying a cloth cover X around holding by needle bar frame.These right pin 2a and left pin 2b catch suture at the rear side of the circle device 3 of rising to the bait.
In addition, the circle device axle 23 of rising to the bait is pivotably connected on not shown crank axle, and this axle 23 makes aforementioned hook circle device 3 swings.Be fixed with the cardinal extremity of bar 24 on this rises to the bait circle device 23, the cardinal extremity of the circle device seat 25 of rising to the bait is arranged on the front end of this bar 24 free to rotately.And, be fixed with the circle device 3 of rising to the bait on the front end of this circle device axle 25 of rising to the bait.As shown in Figure 3, (cloth feeding direction the place ahead) side side direction overlock machine downside inclination forward behind overlock machine of aforementioned hook circle device axle 23 is stretched out.The aforementioned circle device 3 of rising to the bait is swung in the sagittal plane of this circle device axle 23 of rising to the bait by the swing of the circle device axle 23 of rising to the bait, and catches suture at the overlock machine rear side of following hook circle device 4.
In addition, following hook circle device axle 26 is connected on the aforementioned crank axle (not shown), and aforementioned axis 26 makes aforementioned hook circle device 4 swings.On aforementioned hook circle device 26 down, be fixed with the cardinal extremity of hook circle device bar 27, be fixed with down hook circle device 4 on the front end of this time hook circle device axle 27.As shown in Figure 4, following hook circle device axle 26 from the overlock machine rear side forward side direction overlock machine downside tilt and stretch out.Aforementioned hook circle device 4 is down swung in the sagittal plane of this time hook circle device axle 26 by the aforementioned swing of hook circle device axle 26 down, and catches needlework at the overlock machine rear side of aforementioned right pin 2a and left pin 2b.
Then, referring to the pin 2 of Fig. 5 and 6 pairs of aforementioned each overlock machines, rise to the bait circle device 3 and down the effect of hook circle device 4 illustrate one by one, simultaneously, the position relation of aforementioned rise to the bait circle device 3 and the line slide unit 7 of aforementioned cloth presser feet 6 is explained.
Fig. 5 represents before the overlock machine being seen right side of (front) side the fall left side of pin track 17a, left pin 2b the fall motion track 18 of pin track 17b, the circle device 3 of rising to the bait, the view of the motion track 20 of the motion track 19 of hook circle device 4 and line slide unit 7 down respectively.In addition, Fig. 6 is a view of representing the motion track 20 of the motion track 18 of being seen aforementioned fall pin track 17a, 17b, the circle device 3 of rising to the bait from overlock machine left side and line slide unit 7 respectively.
As above-mentioned, aforementioned rise to the bait circle device axle 23 from the overlock machine rear side forward side direction overlock machine downside tilt and stretch out, the aforementioned circle device 3 of rising to the bait is swung in the sagittal plane of this circle device axle 23 of rising to the bait by the swing of the aforementioned circle device axle 23 of rising to the bait.Thus, as shown in Figure 6, the circle device 3 of rising to the bait can be caught suture down at the following overlock machine rear side (Fig. 6 left side) of hook circle device 4, and aforementioned right pin 2a and left pin 2b can be in the overlock machine rear side seizure of the aforementioned circle device 3 of rising to the bait suture.Following hook circle device 4 can be caught needlework at the overlock machine rear side of aforementioned right pin 2a and left pin 2b.Form the brosser point of material to be sewn 5 by so right pin 2a and left pin 2b and the co-operating of hook circle device up and down.
In the making of this situation when the thickness of cloth change or cloth scalariform portion when the compacting suturing part moves, or, suppresses when lifting operation material to be sewn 5 by aforementioned pedal 16 for being removed compacting, lift aforementioned cloth presser feet 6 upward, the aforementioned depression bar 10 of aforementioned such supporting cloth presser feet 6 be the center rotation to be positioned at the rotating shaft 13 that cloth sends the direction rear to and carry cloth cover X top just, thereby (the right oblique upper of Fig. 6) rises the line slide unit 7 of depression bar 10 front ends towards the overlock machine front upper place along path 20 shown in Figure 6.Thus, the mobile route that has left the circle device 3 of rising to the bait owing to line slide unit 7 rises, and can not come in contact collision with the circle device 3 of rising to the bait.
That is, because in the cloth presser 1 of the Staight needle overlock sewing machine of this example 1, aforementioned compacting pivoted arm 11 stretches out to the overlock machine downside from aforementioned rotating shaft 13, and be positioned at the position of the mounting surface X top of material to be sewn, and the front end of aforementioned compacting pivoted arm 11 is connected with aforementioned depression bar 10, thereby, when cloth presser feet 6 because thick cloth or cloth scalariform portion face when rising, with aforementioned rotating shaft 13 is center of rotation, aforementioned depression bar 10, cloth presser feet 6 and line slide unit 7 side shifting before the overlock machine.Therefore, because aforementioned line slide unit 7 vertically moves up and down not resembling in the past,, can avoid line slide unit 7 and hook circle device 3 to collide so can not intersect with the aforementioned circle device 3 of rising to the bait.In addition, when aforementioned cloth presser feet 6 descends, and meanwhile since backward the rear flank move back decline, can make material to be sewn 5 enter the overlock machine rear side.
Therefore, even embodiment according to the present invention 1 when carrying out brosser point by staight needle 2, can guarantee that also the scope that moves up and down of cloth presser feet 6 is bigger, simultaneously, can avoid also can preventing wrinkling by the dislocation of the caused material to be sewn 5 of inclined needle.In aforementioned cloth presser feet 6 compacting material to be sewn 5,, can prevent the dislocation of material to be sewn 5 really owing to make material to be sewn 5 enter the overlock machine rear side.
Below, describe by Fig. 7-12 couple of other example-example 2-7 that has with the cloth presser 1 of the Staight needle overlock sewing machine of previous examples 1 effect same.
The example 2 of the cloth presser of Staight needle overlock sewing machine shown in Figure 7 is such: aforementioned depression bar 10 is made of the first depression bar 10a and the second depression bar 10b, by pin 12 both is rotatably connected to together.Cloth presser feet 6 is arranged on the aforementioned first depression bar 10a free end, and simultaneously, the upper end is connected with the pressure bar 8 with stage clip 9, by this first depression bar of downward effect 10a aforementioned cloth presser feet 6 is pressed in to be positioned on the cloth that carries on the cloth cover X etc.In addition, be connected with the pin of the aforementioned second depression bar 10b by the aforementioned first depression bar 10a, the first depression bar 10a just can be that center of rotation rotates with the vertical axis, and rotating when maintenance waits makes aforementioned cloth presser feet 6 towards laterally keeping out of the way.
In addition, be connected with swing arm 28 on the aforementioned second depression bar 10b, this swing arm 28 constitutes the front and back actuating mechanism and have oscillation center above the second depression bar 10b, and can support the second depression bar 10b again can be with its action swing.And embedding on the cardinal extremity of the aforementioned second depression bar 10b has cylindrical bar support rod 29.This bar support rod 29 is bearing in the rotating shaft 30 slidably, and rotating shaft 30 is axially extended along right angle orientation with respect to it.The same with aforementioned rotating shaft 13, separate pressure arm 14 and be connected on this sliding shaft 30, rotate by the chain 15 and the action interlock of aforementioned pedal 16.
According to the structure of this such example 2, this action of carrying out as a kind of wobble crank mechanism at center with the center of rotation of aforementioned swing arm 28, aforementioned cloth presser feet 6 towards above when mobile, according to its ascending amount side shifting before the overlock machine.That is in overlock machine was made, the stage clip 9 of aforementioned depression bar 10 acted on the aforementioned first depression bar 10a downwards, by the cloth presser feet 6 of the front end that is arranged on this first depression bar 10a aforementioned material to be sewn 5 was pressed on the mounting surface.In this is made, when having the varied in thickness of material to be sewn 5 and having cloth scalariform portion, for overcoming stage clip 9 power, aforementioned cloth presser feet 6 crosses aforementioned cloth scalariform portion, aforementioned swing arm 28 is rotated towards the counter clockwise direction of Fig. 7, simultaneously, interlock therewith, aforementioned sliding shaft 30 rotates, and aforementioned rod support rod 29 is slided towards the overlock machine front side in this sliding shaft 30.Because this action, the front end of the aforementioned first depression bar 10a is along with cloth presser feet 6 rises, and cloth presser feet 6 is according to its ascending amount side shifting forward.Then, after cloth presser feet 6 is crossed the scalariform portion of material to be sewn 5, aforementioned each formation portion and aforementioned activities opposite action, it is the active force clockwise direction rotation of aforementioned swing arm 28 and sliding shaft 30 along with the stage clip 9 of pressure bar 8, simultaneously, aforementioned rod support rod 29 is also slided in sliding shaft 30, descends and aforementioned cloth presser feet 6 is moved on one side towards the overlock machine rear side on one side.Thus, 6 declines of cloth presser feet make material to be sewn 5 enter the overlock machine rear side.
To the material to be sewn decompress(ion) time, step on aforementioned pedal 16 and downward haulage chain 15 by the user, the aforementioned pressure arm 14 of separating that chain 15 is connected on the end rotates towards the counter clockwise direction of Fig. 7, and aforementioned sliding shaft 30 also rotates towards counter clockwise direction with this.By these rotations, aforementioned rod support rod 29 is slided so that pull out in sliding shaft 30, and towards counterclockwise rotating, the active force of aforementioned first depression bar 10a and second depression bar 10b opposing stage clip 9 rises towards the top of overlock machine front side by aforementioned swing arm 28.Its result, (by the right oblique upper shown in the arrow B of Fig. 7) moves cloth presser feet 6 towards the overlock machine front side according to ascending amount.
During side shifting, just towards the counter clockwise direction of Fig. 7 rotate up by aforementioned swing arm 28 for aforementioned pressure bar 8, and depression bar 10 counterclockwise rotates so that draw from sliding shaft 30 on one side along with sliding on one side.Thus, cloth presser feet 6 moves towards top, overlock machine front side (the right oblique upper shown in the arrow B of Fig. 7).
Like this, according to this example 2, even in making, exist thick cloth and or scalariform portion or for to material to be sewn 5 decompress(ion)s and cloth presser feet 6 rises, be fixed on line slide unit 7 on this cloth presser feet 6 because the mobile motion track of avoiding aforementioned hook circle device 3, thereby both can not collide.
In addition, when cloth presser feet 6 descends, move, make material to be sewn 5 introduce and it is suppressed owing to retreat on one side to the overlock machine rear side on one side.
Below, by Fig. 8 the example 3 as other examples of this first embodiment is explained.
Example 3 has the structure roughly the same with example 2, and in the structure of example 2, the oscillation center of aforementioned swing arm 28 is positioned at the downside of the second depression bar 10b, and other structure is identical.For this reason, when cloth presser feet 6 rose, swing arm 28 was rotated towards the clockwise direction of Fig. 8.
Therefore, be fixed on the cloth presser feet 6 aforementioned line slide unit 7 as shown by arrow C, according to ascending amount side shifting before the overlock machine,, can prevent that both from colliding owing to avoided the motion track of hook circle device 3.In addition, when cloth presser feet 6 descends, descend, introduce material to be sewn 5 and really to its compacting because cloth presser feet 6 moves on one side towards the overlock machine rear side on one side.
Example 3 has the structure of aforementioned chain 15 and pedal 13 too, so omit its record in Fig. 8.
Followingly respectively example 4 and example 5 as other example of this first embodiment are explained according to Fig. 9 and Figure 10.
Example 4 and example 5 are such: in each structure of previous examples 2 and example 3, another swing arm 28b (the second swing arm 28b) and the aforementioned second depression bar 10b are coupled together to replace aforementioned sliding shaft 30 and bar support rod 29.That is, support the aforementioned second depression bar 10b by swing arm 28a (the first swing arm 28a) and swing arm 28b, it is moved as a kind of parallel crank mechanism.At this, example 4 shown in Figure 9 is such: the oscillation center of the first swing arm 28a and the second swing arm 28b is positioned at the top of depression bar 10, when rising making cloth presser feet 6 overcome the active force of stage clip 9, the first swing arm 28a and the second swing arm 28b rotate towards the counter clockwise direction of Fig. 9, and the first depression bar 10a and the second depression bar 10b are moved towards top, overlock machine front side.For this reason, the cloth presser feet rises too, along with its ascending amount side shifting before the overlock machine.
The pressure arm 14 of separating that is used to remove the compacting of 6 pairs of material to be sewn 5 of cloth presser feet links to each other with the balance staff 31 of the center of rotation that becomes the second swing arm 28b, by with the same action of previous examples 1 the cloth presser feet being risen.
Therefore, according to example 4, even in order to cross the scalariform portion of material to be sewn 5, cloth presser feet 6 rises, and has avoided aforementioned rising to the bait and encloses the motion track of device because this cloth presser feet 6 and line slide unit 7 move towards direction shown in Fig. 9 arrow D, so both can not collide.
In addition, when cloth presser feet 6 descended, the rear flank was moved back mobilely backwards on one side, so introduces material to be sewn 5 and it is suppressed.
Example 5 shown in Figure 10 is such: the oscillation center of the first swing arm 28a and the second swing arm 28b is positioned at the downside of depression bar 10, and when cloth presser feet 6 was risen, the first swing arm 28a and the second swing arm 28b rotated towards the clockwise direction of Figure 10.
Therefore, according to example 5, the line slide unit 7 that is fixed on the aforementioned cloth presser feet 6 rises towards the direction shown in the arrow E, can avoid colliding with the circle device 3 of rising to the bait of knee-action in vertical plane, simultaneously, cloth presser feet 6 is introduced the overlock machine rear side to material to be sewn 5 and is suppressed.
Below, referring to Figure 11 the example 6 as other example of this first embodiment is explained.
Example 6 is such: in the structure of previous examples 2, supports slidably by sliding shaft 30 near the central portion of the first depression bar 10a, simultaneously, the cardinal extremity of the free and bearing second depression bar 10b of swing arm 28.
Thus, when aforementioned cloth presser feet 6 was risen, the first depression bar 10a and the second depression bar 10b slided from sliding shaft 30 on one side and rotate towards the counter clockwise direction of Figure 11 on one side.At this moment, along with moving of the first depression bar 10a and the second depression bar 10b, while the clockwise direction rotation of the base end part of the second depression bar 10b towards Figure 11 supported in aforementioned swing arm 28.
Therefore,, shown in the arrow F of Figure 11, move to the overlock machine front side, enclose device and collide so can avoid and rise to the bait owing to be fixed on when line slide unit 7 on the cloth presser feet 6 rises according to example 6.
Below, referring to Figure 12 the example 7 as other example of this first embodiment is described.
Example 7 is such: cloth presser feet 6 links to each other with pressure bar 8, and simultaneously, around holding, pressure bar 8 acts on downwards by stage clip 9 this pressure bar 8 by 32 of the pressure bar seats of actuating mechanism before and after constituting.Thus, masterpiece is used on the cloth presser feet 6, can be pressed in material to be sewn 5 on the mounting surface X like this by pressure bar 8.In addition, in this example 7, not shown decompress(ion) member is set, moves with pin and hand by the user.
According to such structure, when cloth presser feet 6 moves up and down owing to jump of material to be sewn 5 etc., move, according to its ascending amount side shifting before the machine towards the direction shown in the arrow G of Figure 12.
Therefore, according to previous examples 7, move motion track with the circle device 3 of avoiding rising to the bait owing to be fixed on line slide unit 7 on the cloth presser feet 6, so both can not collide, in addition, cloth presser feet 6 is suppressed material to be sewn 5 introducing overlock machine rear sides and to it.
As previously discussed, according to the first embodiment of the present invention, even when carrying out brosser point by staight needle 2, line slide unit 7 can not collide with the circle device 3 of rising to the bait yet, the scope that moves up and down that can guarantee cloth presser feet 6 is bigger, simultaneously, can avoid wrinkling to prevent by the dislocation of the caused material to be sewn 5 of inclined needle.
In addition, in cloth presser feet 6 compacting material to be sewn 5, owing to material to be sewn 5 is introduced rear sides and descend, so can keep material to be sewn 5 really and can prevent the dislocation and the needle track bias of material to be sewn 5.
Below, referring to Figure 13 second embodiment of the cloth presser 1 of Staight needle overlock sewing machine of the present invention is explained.
In the present embodiment, to the same structure of aforementioned first embodiment with identical symbol, and omit it illustrated once more.
Second embodiment of the invention is such: for being suitable for suppressing the cloth presser 1 of thickness than the Staight needle overlock sewing machine of the material to be sewn 5 of book.That is, when the cloth of compacting thinner thickness, because the ascending amount of cloth presser feet need not very big in making, move up and down towards vertical direction with respect to carrying cloth cover X and only make cloth presser feet 6, and on the other hand, when changing material to be sewn 5, owing to must guarantee that certain space is easily to carry out the replacing of new material to be sewn 5, cloth presser feet 6 after advancing, the overlock machine front side is risen again, so the ascending amount of cloth presser feet 6 is bigger.
More particularly, second embodiment of the invention is such: the cloth presser feet 6 with line slide unit 7 is arranged on the free end of the first depression bar 10a, and pressure bar 8 is arranged on the top of the first depression bar 10a, and wherein, pressure bar 8 is by 9 pairs of cloth presser feets of stage clip effect thrust.It upward also can be that central cross is rotated with the vertical axis that the first depression bar 10a is connected in the second depression bar 10b by pin 12.In addition, the cardinal extremity of the second depression bar 10b is connected free to rotately near the central authorities of compacting pivoted arm 11, compacting pivoted arm 11 in the example constitutes the front and back actuating mechanism, and matches and unitary rotation with rotating shaft 13, and its shaft 13 is arranged on the cardinal extremity top of the second depression bar 10b.In addition, on the free end of compacting pivoted arm 11, be formed with pressing part 33 towards the bending of overlock machine front side.This pressing part 33 is arranged on the below of the second depression bar 10b with predetermined distance, makes aforementioned compacting pivoted arm 11 when the counter clockwise direction of Figure 13 is rotated in the rotation by aforementioned rotating shaft 13, contacts and upwards compacting with the following of the second depression bar 10b.Along with the aforementioned first depression bar 10a is also suppressed in this compacting, the active force of cloth presser feet 6 opposing pressure bars 8 rises.In addition, be connected with the same with first embodiment separated pressure arm 14 (not shown) in aforementioned rotating shaft 13, by with separate the chain 15 that pressure arm 14 links to each other and transmit the decompress(ion)s action by aforementioned pedal 16.
According to the structure of so aforementioned second embodiment,,, 6 pairs of material to be sewn 5 of cloth presser feet are suppressed by the stage clip 9 of pressure bar 8 the effect first depression bar 10a and the second depression bar 10b downwards usually when overlock machine is made.At this, because the thinner thickness of material to be sewn in the second embodiment of the invention, therefore, when cloth presser feet 6 is crossed the jump etc. of material to be sewn 5, need not rise higherly, can there be aforementioned line slide unit 7 to rise to rise to the bait the danger on the motion track of circle device 3.For this reason, cloth presser feet 6 is that the center is roughly towards vertical direction knee-action and compacting material to be sewn 5 with the cardinal extremity of the second depression bar 10b in making.
When changing material to be sewn 5, must make cloth presser feet 6 rise higherly.At this moment, for aforementioned line slide unit 7 does not collide with the aforementioned circle device of rising to the bait, on one side cloth presser feet 6 one side side shifting before the overlock machine rises.That is the user steps aforementioned pedal 16 and during with aforementioned chain 15 traction downwards, the aforementioned pressure arm 14 of separating rotates towards the counter clockwise direction of Figure 13.Shown in Figure 13 (b), be that rotate towards counter clockwise direction at the center along with this rotates aforementioned compacting pivoted arm 11 with rotating shaft 13, the second depression bar 10b is pressed to the overlock machine front side, thus, equally also the first depression bar 10a and cloth presser feet 6 are pressed to the overlock machine front side.
After this, aforementioned compacting pivoted arm 11 rotates, and aforementioned pressing part 33 is connected on the following of the second depression bar 10b and maintenance.Shown in Figure 13 (c), on one side by the compacting of this pressing part 33 move the second depression bar 10b and the first depression bar 10a on one side before the overlock machine side shifting rise, so cloth presser feet 6 is according to ascending amount side shifting before the overlock machine.
Therefore, aforementioned line slide unit 7 can not move on in the track that takes place to collide with the aforementioned circle device 3 of rising to the bait yet, and the cloth presser feet rises 6 to height fully, thereby can guarantee to be used for the big working space of the replacing of material to be sewn 5.
In addition, when changing aforementioned material to be sewn 5 and suppressing new material to be sewn 5, aforementioned compacting pivoted arm 11 rotates towards the clockwise direction of Figure 13, cloth presser feet 6 is connected on the material to be sewn 5, aforementioned pressing part 33 separates with the aforementioned second depression bar 10b, by 9 pairs of cloth presser feet 6 actuating pressures of stage clip of aforementioned pressure bar 8., because compacting rotating shaft 11 further rotate second depression bar 10b towards overlock machine rear side moved thereafter, thus, the action that cloth presser feet 6 makes material to be sewn 5 enter the overlock machine rear side by the first depression bar 10a, thus material to be sewn 5 suppressed really.
Therefore, according to second embodiment of the invention, in the state of the little ascending amount of 6 need of cloth presser feet with the material to be sewn 5 of making thin thickness, cloth presser feet 6 is with respect to carrying vertically knee-action of cloth cover X, and the ascending amount of cloth presser feet 6 must be greatly when changing material to be sewn 5, and meanwhile after cloth presser feet 6 can advance towards the overlock machine front side more forward side shifting rise.Therefore, can avoid the line slide unit 7 of cloth presser feet 6 and the circle device of rising to the bait to collide.
In addition, during new material to be sewn 5 after compacting is changed, cloth presser feet 6 moves towards the overlock machine rear side on one side and descends on one side and behind the compacting material to be sewn 5, owing to carry out material to be sewn 5 is introduced the action of overlock machine rear side, can be to its certain compacting, thus can prevent that needle tracking dislocation etc. is to obtain making of the high brosser point of quality.
Below, explain referring to the 3rd embodiment of the cloth presser 1 of Figure 14 and 15 pairs of Staight needle overlock sewing machines of the present invention.
In the third embodiment of the present invention to the structure identical with aforementioned first embodiment with identical symbol, and omit it explained again.
Third embodiment of the invention is such: the second depression bar 10b is moved along the vertical direction and the first depression bar 10a with cloth presser feet 6 is swung at above-below direction, make cloth presser feet 6 side shifting before the overlock machine according to ascending amount.
That is the oscillation center of the first depression bar 10a is located at top position and can swinging in vertical plane, by first pin 34 this depression bar 10a is connected near the front end of the second depression bar 10b.Cloth presser feet 6 is fixed on the end of overlock machine front side of the first depression bar 10a, and the below of compacting flat spring 35 is connected on the end of overlock machine rear side.Before and after this compacting flat spring 35 constitutes actuating mechanisms and by two spring-loaded pins 36 from the above-below direction clamping, described two spring fulcrum posts 36 are arranged on the second depression bar 10b, usually, towards the clockwise direction effect first depression bar 10a of Figure 14.In addition, the cardinal extremity of the second depression bar 10b carries out pin by second pin 37 with the bend of compacting pivoted arm 11 and is connected, and can be that rotate at the center with the vertical axis, simultaneously, section slightly the moving direction limiting member 38 of コ font be arranged near the length direction middle part of this second depression bar 10b, laterally mobile to limit it from above-below direction towards a side.Therefore, when carrying out threading and safeguarding, the second depression bar 10b rotates towards a uncurbed direction only.In addition, in the third embodiment of the present invention, owing to the second depression bar 10b in making does not move as above-below direction is that the first depression bar 10a makes knee-action, and the quality of moving component is less, even high speed rotating and little spring are pressed the drive actions that also can follow overlock machine.
Below the effect of the above-mentioned relevant third embodiment of the present invention is described, to in the making of material to be sewn 5, the second depression bar 10b is not because moving direction limiting member 38 can be towards upper and lower to moving, and the first depression bar 10a is the clockwise direction effect of center towards Figure 14 by the active force of compacting flat spring 35 with first pin 34.By this first depression bar 10a force transmission to cloth presser feet 6, thereby the compacting material to be sewn 5.When cloth presser feet 6 is crossed the thicker jump of material to be sewn 5, the first depression bar 10a is that the center is towards instantaneous rotation counterclockwise while the active force that overcomes compacting flat spring 35 with first pin 34, make cloth presser feet 6 while rising, move with shape along material to be sewn 5 by the side shifting before the overlock machine of direction shown in the arrow H.In addition, after the jump of crossing material to be sewn 5 etc., the first depression bar 10a descends and cloth presser feet 6 is moved on one side towards the overlock machine rear side on one side by the instantaneous toward the clockwise direction rotation of elastic force of compacting flat spring 35.
Since the maintenance of overlock machine etc. must cloth presser feet 6 with fall the pin part from the time, the second depression bar 10b with second pin 37 be the center towards arrow I direction rotation shown in Figure 15, make the first depression bar 10a and cloth presser feet 6 recess pin portion.
In third embodiment of the invention, substitute aforementioned compacting flat spring 35, also can be arranged on the pressure bar with stage clip 98 as shown in first embodiment top of the first pressure bar 10a, by this stage clip 9 cloth presser feet 6 is pressed on the material to be sewn 5.
Therefore, a third embodiment in accordance with the invention, when the cloth presser feet 6 with line slide unit 7 is crossed the jump etc. of material to be sewn 5, on one side since forward side shifting rise, can avoid aforementioned line slide unit 7 and aforementioned rising to the bait to enclose device 3 and collide.
In addition, when aforementioned cloth presser feet 6 descends, owing to move towards the overlock machine rear side, can introduce material to be sewn 5 and it is suppressed according to its slippage.
And, in third embodiment of the invention, owing to the second depression bar 10b in making does not move as above-below direction is swing, make the first depression bar 10a make knee-action, the quality of moving component is less, also can follow the drive actions of overlock machine even high speed rotating and little spring are pressed, have high performance overlock machine thereby can provide.
The present invention is not limited to previous embodiment, and various changes can be made as required.
The cloth presser of Staight needle overlock sewing machine according to the present invention as described hereinbefore, when the compress member rises, thereby the compress member collides according to its ascending amount side shifting before overlock machine circle device of can avoiding and rise to the bait, therefore, even when carrying out brosser point, can guarantee that also the scope that moves up and down of cloth presser feet is bigger by staight needle.
In addition, when the cloth presser feet descends in making, towards overlock machine rear side move on one side decline on one side, draw the action of making article and enter.Therefore, can obtain to prevent by the needle tracking dislocation of the caused material to be sewn of inclined needle and wrinkling, thereby obtain the high-quality effect of making.
Claims (4)
1, the invention provides a kind of cloth presser of overlock machine, this cloth presser is by at Staight needle overlock sewing machine and have the carrying between the cloth cover of line slide unit, by elastic force compacting material to be sewn, can overcome simultaneously the compress member that this elastic force rises towards aforementioned loading surface top and make aforementioned cloth presser from aforementioned loading surface rise or drop on the aforementioned loading surface compacting up and down mechanism constitute, wherein this Staight needle overlock sewing machine have with respect to the loading surface that is loaded with material to be sewn along vertical-path do knee-action pin and with the circle of the hook up and down device of this staight needle co-operating to form brosser point.It is characterized in that aforementioned compacting up and down mechanism constitutes like this: make its side shifting before the overlock machine according to the ascending amount of aforementioned compress member.
2, cloth presser according to claim 1 is characterized in that, the aforementioned compacting of institute up and down mechanism has: when aforementioned compress member knee-action, and the structure that aforementioned line slide unit can the mobile route not related with the mobile route of the circle device of rising to the bait constitutes.
3, cloth presser according to claim 1, it is characterized in that, aforementioned compacting mechanism up and down has depression bar and the rotating shaft of aforementioned compress member supporting at front end, and wherein, this rotating shaft is connected on the depression bar rear end and at aforementioned depression bar upper horizontal axle and is rotatably supported on the frame for the center.
4, cloth presser according to claim 1 is characterized in that, aforementioned compacting up and down mechanism has the front and back actuating mechanism that ascending amount according to aforementioned compress member makes its side shifting before the overlock machine.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP124226/97 | 1997-05-14 | ||
| JP12422697A JPH10314475A (en) | 1997-05-14 | 1997-05-14 | Presser mechanism of vertical needle overlook sawing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1207426A true CN1207426A (en) | 1999-02-10 |
Family
ID=14880123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98115104 Pending CN1207426A (en) | 1997-05-14 | 1998-05-14 | Staight needle overlock sewing machine |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JPH10314475A (en) |
| CN (1) | CN1207426A (en) |
| TW (1) | TW363096B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114990800B (en) * | 2022-07-14 | 2023-08-29 | 江苏融研汽车配件有限公司 | Overlock device and method for automatic beading vehicle cushion production |
-
1997
- 1997-05-14 JP JP12422697A patent/JPH10314475A/en active Pending
-
1998
- 1998-05-11 TW TW087107230A patent/TW363096B/en active
- 1998-05-14 CN CN 98115104 patent/CN1207426A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| JPH10314475A (en) | 1998-12-02 |
| TW363096B (en) | 1999-07-01 |
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