CN101144230B - Sewing machine - Google Patents
Sewing machine Download PDFInfo
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- CN101144230B CN101144230B CN200710154625.3A CN200710154625A CN101144230B CN 101144230 B CN101144230 B CN 101144230B CN 200710154625 A CN200710154625 A CN 200710154625A CN 101144230 B CN101144230 B CN 101144230B
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- cutting knife
- movable
- cut
- movable cutting
- still
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B65/00—Devices for severing the needle or lower thread
- D05B65/02—Devices for severing the needle or lower thread controlled by the sewing mechanisms
Abstract
The invention can reduce the length of residual end of thread residual on the cloth. A thread cutting device comprises a cutting cutter with knifepoint rotatablely supported on kettle pillow block and moving between an initial position and a thread cut position; a mobile cutter rotating on the kettle pillow block and moving at an initial position, a thread capture position and a thread cut position and cutting the up thread and down thread by teamwork with the cutting cutter; a cylinder for making the cutter rotate; a movable cutter driving pin for coupling the cutting cutter and mobile cutter to make them rotate, using the rotation of the cutting cutter from the initial position to the thread cut position; a cut line cam roller interlocked with the up axle and rotating; and a cam roller rotating with the mobile cutter and clipped with the cut line cam roller. The support part of feeding tooth is at one side distant from the horizontal kettle, and the front end of the mobile cutter passes detector needle center side of the cirumferential of the middle kettle, thus the the length of residual end of thread residual on the cloth can be reduced.
Description
Technical field
The present invention relates to a kind of Sewing machines, it has the wire cutter that cuts off suture by the co-operating of the movable cutting knife that rotates and cut-out cutting knife.
Background technology
Current, as shown in figure 27, the wire cutter of known a kind of Sewing machines, this wire cutter cuts off suture (for example, with reference to patent documentation 1) by the movable cutting knife that rotates and the co-operating of cutting off cutting knife.
Wire cutter as shown in figure 27 utilizes the movable cutting knife 212 that is rotated oscillating motion in the horizontal plane on middle still 202, and that will move at the upper surface of middle still 202 reaches the standard grade 203 and 206 hook and cut off rolling off the production line of the upper surface configuration of middle still 202.In Figure 28, movable cutting knife platform 210 is fixed on the not shown driving shaft 208 that utilizes drive source and rotate, and movable cutting knife 212 is fixed on this movable cutting knife platform 210.And, if driving shaft 208 rotation, then movable cutting knife 212 take driving shaft 208 as fulcrum above still 214 reciprocating rotation.Utilize this rotation, the leading section of movable cutting knife 212 after 206 seizure of will rolling off the production line, is guided line into the direction of fixed cutting tool 216 (cut-out cutting knife) as shown in figure 29, if the blade 218 of movable cutting knife 212 overlaps with fixed cutting tool 216, then rolling off the production line 206 is cut off at the T point.At this moment, fastening spring 220 clampings of being rolled off the production line of the cut-out end of the bobbin case side that rolls off the production line are held in order to begin to make next time.In addition, 224 are the feeding tooth, and 226 are the pin hole that suture needle is passed on the feeding tooth 224, and 228 is needle plate.
In Figure 30, be P if make the root of line segment residual on sewn object, making cut-off part is T, then determines length L by the path from P to T process among Figure 28.And, if never illustrated electric machine control system sends the tangent line signal, then switched on to solenoid by electrical system, utilize solenoid or cam and movable cutting knife 212 carries out reciprocating rotation.In addition, movable cutting knife 212 is replied to catch in rotating at it and is reached the standard grade 203 and roll off the production line 206, blade 218 and fixed cutting tool 216 is overlapped replying to rotate, and cuts off suture.This a series of action is carried out suture needle makes progress the Sewing machines course of action of stop position between moving period from predefined lower stop position, carries out along with the rotation of Sewing machines.
Summary of the invention
But, for above-mentioned patent documentation 1 disclosed known Sewing machines, owing to below needle plate 228, there not being to be used for fully the space that the front end of movable cutting knife 212 and fixed cutting tool 216 enters, the line off-position of being undertaken by the co-operating of above-mentioned movable cutting knife 212 and fixed cutting tool 216 from fall pin away from, therefore elongated as the residual end length L of the residual suture of the cloth side of sewn object, pluck that the subsequent treatment such as line need to spend man-hour and the problem that produces productivity losing.
The object of the invention is to, shorten the residual end length of residual suture on cloth.
In order to solve above-mentioned problem, the invention of technical scheme 1 record is a kind of Sewing machines, it is characterized in that having: needle plate (25), and it is fixed on the sewing machine base; Feeding tooth (26), it passes in and out at described needle plate, carries sewn object; The still pillow block (1) of horizontal container, it is installed in the described base; Outer still (22), it rotatably is supported on the described still pillow block, has the tip of living in the line wire loop by rotary hook; Middle still (23), it rotatably is supported in the described outer still, and the bobbin of having reeled and having rolled off the production line is installed; Middle still guide portion (25a), it engages the rotation of still in the restriction with jut (23a) on being arranged at described middle still; Cut off cutting knife (2), it has blade (2a) and rotatably is supported on the described still pillow block, is cutting off movement between the cut-out cutting knife line off-position that cutting knife initial position and the pin central side that falls from this cut-outs cutting knife initial position to suture needle advance; And movable cutting knife (9), it rotates at described still pillow block, in order at movable cutting knife initial position, the line catching position that advances from this movable cutting knife initial position, and mobile between the movable cutting knife line off-position that retreats from this line catching position, reach the standard grade and roll off the production line by cutting off in described movable cutting knife line off-position and the co-operating of described cut-out cutting knife, described movable cutting knife, its center of rotation is across the pivot of described outer still and be positioned at the opposition side at the described pin center that falls, dodge above described middle still in whole shift action process, simultaneously its front end is by described pin center one side that falls of middle still periphery.
The invention of technical scheme 2 record on the basis of the invention of technical scheme 1 record, is characterized in that, described movable cutting knife, and the motion track of its blade is by the described pin center that falls.
The invention of technical scheme 3 records on the basis of the invention that technical scheme 1 is put down in writing, is characterized in that, described movable cutting knife, and its at least a portion forms prism-shaped.
The invention of technical scheme 4 record on the basis of the invention of technical scheme 1 record, is characterized in that described movable cutting knife has to reach the standard grade dodges section, and it prevents from reaching the standard grade by this movable cutting knife clamping described line off-position is cut.
The invention of technical scheme 5 records on the basis of the invention that technical scheme 1 is put down in writing, is characterized in that described movable cutting knife, the nose angle of its upper surface and the nose angle of lateral surface are in the scopes of 25～30 degree.
The effect of invention
Invention according to technical scheme 1 record, because movable cutting knife, its front end can be through than more close pin center one side that falls of the periphery of middle still, so by cutting off the movable cutting knife line off-position of suture with the co-operating of cutting off the cutting knife line, can be than prior art more near the needle downing position side.Thus, can when using existing middle still guide portion and needle plate, shorten the residual end length of line residual on the sewn object.Thereby, can shorten the time that post-processed such as plucking line needs, can realize the raising of production efficiency.
Invention according to technical scheme 2 records, can access the effect same with the invention of technical scheme 1 record, in addition, especially, because the motion track of the blade of movable cutting knife is through the pin center that falls, so can make movable cutting knife line off-position more near needle downing position.Thereby, can further shorten the residual end length of suture residual on the sewn object, so can boost productivity.
According to the invention of technical scheme 3 records, can access the effect same with the invention of technical scheme 1 record, in addition, especially, be prism-shaped by making movable cutting knife, for example, compare with the movable cutting knife that existing formation is tabular, can improve the rigidity of this movable cutting knife.Thus, by with the co-operating of cutting off cutting knife, can cut off the suture thicker than prior art, improve the free degree of the suture that uses when making.
According to the invention of technical scheme 4 record, can access the effect same with the invention of technical scheme 1 record, in addition, dodge section by reaching the standard grade of arranging at movable cutting knife, the upper thread end after can preventing from cutting off is by this movable cutting knife clamping.Therefore, owing to after suture is cut off, remaining reaching the standard grade in the suture needle promptly can be extracted from sewn object, therefore can easily the sewn object after making be taken out, realize the raising of productivity ratio.
Invention according to technical scheme 5 records, can access the effect same with the invention of technical scheme 1 record, in addition, especially, be less than or equal to 30 degree because the nose angle of the nose angle of the upper surface of movable cutting knife and lateral surface is made as, so can promptly insert in the wire loop of reaching the standard grade.Therefore, catching position is successfully carried out the line capturing motion online, improves the reliability of Sewing machines action.And because the nose angle of the upper surface of movable cutting knife and the nose angle of lateral surface are made as more than or equal to 25 degree, therefore the front end length of this movable cutting knife can be not long and can guarantee the width of this movable cutting knife.Therefore, can suppressing movable cutting knife in space and displacement that base inside accounts for, obtain above-mentioned effect.
Description of drawings
Fig. 1 is the approximate three-dimensional map of the structure of the wire cutter that relates to of expression present embodiment.
Fig. 2 is the stereogram of wanting section's structure of the wire cutter that relates to of expression present embodiment.
Fig. 3 is the stereogram that the summary of the cut-out cutting knife periphery that relates to of expression present embodiment consists of.
Fig. 4 is the side view of the structure (original state) of the cylinder periphery that relates to of expression present embodiment.
Fig. 5 is that the side of the structure (during action) of the cylinder periphery that relates to of expression present embodiment is looked.
Fig. 6 is the stereogram that the summary of the movable cutting knife periphery that relates to of expression present embodiment consists of.
Fig. 7 is the upward view of the structure of the cylinder periphery that relates to of expression present embodiment.
Fig. 8 is the action specification figure of the action of the tangential cam that relates to of expression present embodiment.
Fig. 9 is the top view of the action (initial position) of the wire cutter that relates to of expression present embodiment.
Figure 10 is the top view of the action (cutting knife position of readiness) of the wire cutter that relates to of expression present embodiment.
Figure 11 is the top view of the action (line catching position) of the wire cutter that relates to of expression present embodiment.
Figure 12 is the key diagram of the motion track of the movable cutting knife that relates to of expression present embodiment.
Figure 13 (a) is the top view of the feeding tooth that relates to of expression present embodiment.(b) be the side view of the position relationship of expression feeding tooth, middle still and outer still.
Figure 14 is the skeleton diagram of the movable cutting knife of the insertion that relates to of expression present embodiment when reaching the standard grade wire loop.
Figure 15 represents the leading section shape of the movable cutting knife that present embodiment relates to.(a) being top view, (b) is side view.
Figure 16 is the top view of the action (line off-position) of the wire cutter that relates to of expression present embodiment.
Figure 17 is the stereogram of the line capturing motion of being undertaken by movable cutting knife (reach the standard grade and dodge section) that relates to of expression present embodiment.
Figure 18 is that the wire clamp that is undertaken by movable cutting knife and fastening spring that the expression present embodiment relates to is held the action specification figure of action (during cut-out).
Figure 19 is that the wire clamp that is undertaken by movable cutting knife and fastening spring that the expression present embodiment relates to is held the action action specification figure of (cut-out afterwards).
Figure 20 represents the movable cutting knife that present embodiment relates to.(a) being stereogram, (b) is top view.
Figure 21 is the stereogram of the leading section shape of the movable cutting knife that relates to of expression present embodiment.
Figure 22 is the action specification figure of the line capturing motion of being undertaken by movable cutting knife that relates to of expression present embodiment.
Figure 23 is the side view of the cable guiding device that relates to of expression present embodiment.
Figure 24 is the stereogram of the cable guiding device that relates to of expression present embodiment.
Figure 25 is the top view of the cable guiding device that relates to of expression present embodiment.
Figure 26 is other the skeleton diagram of example of the fastening spring that relates to of expression present embodiment.
Figure 27 is the top view figure of the existing wire cutter of expression.
Figure 28 is the stereogram of the existing wire cutter of expression.
Figure 29 is the stereogram of the expression line capturing motion of being undertaken by existing wire cutter.
Figure 30 is the skeleton diagram that represents the residual end of suture of the sewn object after the line that is undertaken by existing wire cutter cuts off.
The specific embodiment
Describe in detail for implementing best mode of the present invention referring to Fig. 1～Figure 26.But, although in following embodiment, carried out preferably limiting on the multiple technologies in order to realize the present invention, be not that scope of invention is defined as following embodiment or illustrated example.In addition, in the present invention, take at the XYZ axle shown in each figure as benchmark, determine the direction of each parts of Sewing machines.Under the state that Sewing machines is arranged on the horizontal plane, Z-direction represents that vertical direction is above-below direction, Y direction represents the left and right directions consistent with the length direction of not shown Sewing machines arm, X-direction represent level and with the fore-and-aft direction of Y direction quadrature.
(overall structure)
In the present embodiment, describe as an example of comprehensive feed sewing machine example as Sewing machines.Comprehensive feed sewing machine (below, referred to as Sewing machines), it for example is such Sewing machines, namely, the sewn object skew in order to prevent from being accompanied by feed motion, make the pin feed motion synchronous with the feed motion that is undertaken by upper feeding mechanism and lower feeding mechanism, this pin feed motion makes moving up and down of the suture needle undertaken by the suture needle reciprocating mechanism and is swung by the suture needle that the suture needle swing mechanism carries out and carries out synchronously, thus, under the state that suture needle 24 is thrust thick sewn object (for example, leather thing), carry out feeding.
Described Sewing machines has: not shown sewing machine stand, its built-in following each section of mechanism; Needle drive mechanism, it makes suture needle 24 carry out reciprocal knee-action and suture needle wobbling action at the arm front end of sewing machine stand; Feed mechanism (lower feeding mechanism), it to needle plate 25 turnover, makes in the horizontal direction upper feeding of the sewn object put on the base portion that is loaded in sewing machine stand in the base portion; Container mechanism, its by with the needle drive mechanism co-operating, form stitching; And wire cutter 100, it is after sewing finishing, and will reach the standard grade T1 and the T2 that rolls off the production line cut off.In addition, Sewing machines also has other and makes necessary various mechanism, but these mechanisms are identical with existing known structure, thereby is not described in detail in the present embodiment.
(sewing machine stand)
Sewing machine stand has: base portion (sewing machine base), and it has puts the horizontal base seat surface that carries as the cloth of sewn object; Vertical body section, its end from this base portion uprightly arranges upward; And arm (sewing machine arm), its top and base portion almost parallel ground from this vertical body section extends, and this sewing machine stand has and is from the side the roughly known shape of コ word shape.At the built-in needle drive mechanism of the front end of arm, built-in container mechanism, feed mechanism and wire cutter 100 in base portion.And, at the upper surface of base portion, at the fixing needle plate 25 (with reference to Figure 13 (b)) of the lower side of the suture needle 24 that utilizes needle drive mechanism to move up and down.On needle plate 25, be provided for making the peristome of feeding tooth 26 turnover of feed mechanism.In addition, the lower face side at an end margin of needle plate 25 is provided with middle still guide portion 25a, and it is by engaging with middle still jut 23a on the middle still 23 that is arranged on container mechanism described later, limits the rotation of still in this (with reference to Figure 13 (b) and Figure 14).
(needle drive mechanism)
Needle drive mechanism has known structure, that is, have: the not shown upper axle as machine spindle, and it can extend in arm inside with rotating freely, links with sewing machine electromotor; Rotary hammer, it is fixed on the front end of axle on this; Toggle-action lever, its upper end can rotate freely link with the eccentric part of this rotary hammer; Needle bar, the lower end of itself and toggle-action lever links; And suture needle 24, it is fixed on its lower end.In addition, if upper axle is rotated by the driving of sewing machine electromotor, then this rotation is transformed to via rotary hammer and toggle-action lever and moves up and down, and passes through simultaneously not shown pin swing mechanism, is oscillating motion with the rotation transformation of upper axle, passes to needle bar.Thus, needle bar carries out swinging the pin feed motion that combines with back and forth moving up and down with pin, when suture needle 24 descends, carries cloth to direction of feed synchronously with feeding tooth 26 described later.In the present embodiment, by back and forth moving up and down of described needle bar, suture needle 24 pin that falls in the pin hole 26b of feeding tooth 26 makes needle downing position and is positioned at the inboard (with reference to Figure 12) of this pin hole 26b as the pin center 32 that falls at its center.
(feed mechanism)
Feed mechanism has: feeding tooth 26, and it passes in and out to needle plate 25 in base portion, carries cloth; Bottom and top feed mechanism (diagram is omitted), it makes this feeding tooth 26 carry out the feed motion of above-below direction; And horizontal feed mechanism (diagram is omitted), it makes feeding tooth 26 carry out the feed motion of horizontal direction.And Sewing machines has not shown upper feeding pin and presser feet, the rotary synchronous of they and upper axle and moving up and down alternately, and the upper feeding pin of a side and suture needle 24 and feeding tooth 26 swing synchronously, carry cloth to direction of feed.
From with the lower shaft of upper axle (machine spindle) interlock, via bottom and top feed mechanism and horizontal feed mechanism, make feeding tooth 26 carry out feed motion, near the top dead-centre of elliptic orbit roughly, from the peristome of needle plate 25 to the base portion turnover and carry cloth in direction of feed.In addition, on feeding tooth 26, form the fall pin hole 26b of pin of suture needle 24.And such as Figure 13 (a) and (b), at the lower surface of feeding tooth 26, centered by the pin center 32 that falls, only the opposition side at horizontal container forms support portion 26a.That is, the feeding tooth 26 that present embodiment relates to, its pin hole 26b and more open than the lower surface of more close outer still 22 sides of this pin hole 26b forms space 33 below needle plate 25 by becoming this structure.
(container mechanism)
Container mechanism has: still pillow block 1, and it is fixed on the lower surface in the base portion, and it can regulate (with reference to Fig. 1) in the position in the horizontal direction; The still axle, its in the inside of this still pillow block 1 along Z-direction (above-below direction) rotatably supported (diagram slightly); And horizontal container, it has outer still 22 and middle still 23, and this outer still 22 is by being supported by this still axle axle, and rotatably supported in horizontal plane, still 23 rotatably is supported in this outer still 22 in this.
Still 22 is provided with not shown tip outside, and when it rose from bottom dead centre in suture needle 23, the wire loop of reaching the standard grade that the rotation by described outer still 22 will form below needle plate 25 hooked.
In the inside of middle still 23, installing has reeled the roll off the production line bobbin of T2.In addition, on the part of the upper periphery edge of middle still 23, be provided with middle still jut 23a, it limits the rotation of still 23 in this by engaging with the middle still guide portion 25a of above-mentioned needle plate 25 lower surfaces.
In addition, the middle still 23 that present embodiment relates to, compare with existing middle still, its depth D increases to and approaches the height (with reference to Figure 13 (b)) approaching with the lower surface of needle plate 25, thereby can be increased in the line amount that is installed on the T2 that rolls off the production line that reels on its inboard bobbin.
And, if with the interlock of upper axle in base portion lower shaft be rotated driving, then via not shown still shaft gear, still axle and 22 rotations of outer still, the co-operating of the outer still 22 by this rotation and the suture needle 24 that moves up and down forms stitching.
(wire cutter)
The below is elaborated to the structure of the wire cutter 100 that present embodiment relates to.
Fig. 1 is the stereogram of the structure of expression wire cutter 100, and Fig. 2 is the stereogram of wanting section's structure of expression wire cutter 100.
As shown in Figures 1 and 2, wire cutter 100 has: cut off cutting knife 2, it has the point of a knife 2a (with reference to Fig. 3) as blade, supported rotationally by still pillow block 1, mobile between initial position (with reference to Fig. 9) and 32 sides are advanced from line off-position (with reference to Figure 16) from this initial position to needle downing position; Movable cutting knife 9, it rotates at still pillow block 1, mobile between initial position (with reference to Fig. 9), the catching position (with reference to Figure 11) that advances from this initial position and the suture off-position (with reference to Figure 16) that retreats from this catching position, cut off at will reach the standard grade with cutting off cutting knife 2 co-operatings T1 and the T2 that rolls off the production line of described line off-position; As the cylinder 6 of actuator, it makes and cuts off cutting knife 2 rotations; As the movable cutter driving pin 21 of holding section, it should cut off cutting knife 2 and link with movable cutting knife 9 by cutting off the rotation of cutting knife 2 from initial position to the line off-position, and movable cutting knife 9 is rotated in this rotation direction; Tangential cam 15, itself and upper axle (machine spindle) link and are rotated; Cam roller 13, it rotates integratedly with movable cutting knife 9, can engage (with reference to Fig. 6) with tangential cam 15; And fastening spring 29, it is fixed on the still pillow block 1, the T2 that rolls off the production line after can keeping cutting off.And wire cutter 100 also has cable guiding device 31, and it prevents in above-mentioned line off-position with external cutting off reach the standard grade T1 and the T2 that rolls off the production line.Below, describe each parts in detail.
(cut-out cutting knife)
As shown in Figure 3, cut off cutting knife 2 and have blade 2a at its front end (end), base end part (other end) is removably mounted on the end that cuts off cutting knife platform 3 by screw simultaneously.Cut off cutting knife platform 3, the support portion 3a of its front end extends near the root that cuts off cutting knife 2, becomes the shape (with reference to Figure 12) that supports securely described cut-out cutting knife 2.Thus, cutting off cutting knife 2 can be thick unlike existing cutting knife, and namely can guarantee rigidity with the prior art same thickness, correspondingly, can make the thickness of movable cutting knife 9 improve its rigidity greater than existing thickness.And the cut-out cutting knife 2 that present embodiment relates to when configuring on the online off-position by the driving of cylinder 6 described later, makes near the pin center 32 (with reference to Figure 12) that falls that extends to needle plate 25 belows as the point of a knife 2a of its front end.
Cut off the other end of cutting knife platform 3, hold the upper end that is fixed on the cut-out slitter shaft 4 that rotatably is supported on the hollow on the still pillow block 1 (with reference to Fig. 1) tightly, cut off an end of cutter driving arm 5 and hold the lower end that is fixed on cut-out slitter shaft 4 tightly.And, in cutting off slitter shaft 4, insert the movable slitter shaft 11 of the center of rotation that becomes the movable cutting knife 9 of aftermentioned along Z-direction free to rotately.That is, the center of rotation of any one in cut-out cutting knife that present embodiment relates to 2 and the movable cutting knife 9 all is configured in a side opposite with needle downing position 32 across the pivot of outer still 22.
The other end cutting off cutter driving arm 5 utilizes stepped screw 8 rotatably to link cylinder union body 7, and this cylinder union body 7 is installed on the connecting rod front end 6a as the operating member of cylinder 6 that is fixed on the still pillow block 1.Like this, if connecting rod front end 6 then cuts off cutting knife platform 3 and swings centered by cutting off slitter shaft 4 to the movement of advancing and retreat of as shown in Figure 3 arrow A 1 direction or B1 direction, the cut-out cutting knife 2 that is arranged at its front end is along the movement of advancing and retreat of arrow A 2 directions or B2 direction.
(cylinder)
And, usually, supply gas in the cylinder 6 and connecting rod front end 6a is configured in arrow B 1 direction (left among Fig. 4) is configured in cylinder union body 7 original state (with reference to Fig. 4) of rotating the retainer butt of usefulness with preventing of being comprised of nut and limiting gasket 19.In the present embodiment, under described original state, above-mentioned cut-out cutting knife 2 is configured in the i.e. going-back position (with reference to Fig. 9) of initial position, and its initial position is restricted.On the other hand, if make connecting rod front end 6a mobile to arrow A 1 direction (among Fig. 5 right-hand) to cylinder 6 supply gas, 1 direction moves along the axis of guide 17 to arrow A then to make cylinder union body 7.And, by cutting off cutting knife platform 3 caging bolt 27 that arranges and limiting plate 28 butts that are fixed on the still pillow block 1, limit the line off-position (with reference to Figure 10 and Figure 16) of cutting off cutting knife 2.
(cutting off the link structure of cutting knife and movable cutting knife)
One end of movable cutting knife platform 10 is fixed on the upper end of movable slitter shaft 11, so that itself and these movable slitter shaft 11 quadratures.The base end part of the movable cutting knife 9 of aftermentioned utilizes screw can be fixed on the top of movable cutting knife platform 10 with freely dismantling, at the lower surface of the other end of movable cutting knife platform 10, the downwards outstanding movable cutter driving pin 21 that is provided as holding section of the present invention.
And, if cut off cutting knife 2 by the driving of cylinder 6 and cut off cutting knife platform 3 and rotate to arrow A 2 directions, cut off an end and movable cutter driving pin 21 butts that are arranged on the movable cutting knife platform 10 of cutting knife platform 3, then cut off cutting knife 2 and link with movable cutting knife, both become one and rotate (with reference to Fig. 2) to the direction of arrow A 2.That is, movable cutting knife 9 swings to arrow A 2 directions centered by movable slitter shaft 11 along with the swing of cutting off cutting knife 2.
And, such as Fig. 2 and shown in Figure 6, hold an end of fixing movable cutter driving wrist 12 tightly in the lower end of movable slitter shaft 11.This movable cutter driving wrist 12 is extending with the horizontal direction of movable slitter shaft 11 quadratures, via the cam roller axle 14 along Z-direction, links cam roller 13 in the lower side of its other end free to rotately.This cam roller 13, by the driving of cylinder 6 after connecting rod front end 6a is moved to arrow A 1 direction, move by the cam part along tangential cam 15 described later, the other end of movable cutter driving wrist 12 is swung along arrow A 3 directions or B3 direction, the rotatory force of movable slitter shaft 11 and movable cutting knife 9 is provided.And, utilize the driving force of cylinder 6 after cut-out cutting knife 2 moves to the line off-position of described cut-out cutting knife 2 at movable cutting knife 9, utilization is by the rotatory force that described tangential cam 15 provides, and carries out from the line catching position that advances than initial position, to moving back and forth between the line off-position that retreats from this line catching position.
And, such as Fig. 2 and shown in Figure 7, in the bottom of above-mentioned cylinder union body 7, fixing movable cutting knife restoring board 20, it has from viewed in plan is hook-shaped front end 20a.Therefore, if the connecting rod front end 6a of cylinder 6 moves to arrow B 1 direction, then an end of movable cutter driving wrist 12 is pushed back with described front end 20a butt, and therefore movably the other end of cutter driving wrist 12 swings to arrow B 3 directions.And, keep as shown in Figure 4 original state by cylinder union body 7, thereby limit the initial position of movable cutting knife 9.
(tangential cam)
At the upper surface of tangential cam 15, such as Fig. 2 and the cam part that is provided with shown in Figure 8, this cam part is made of following interval: the interval 15a of the standby of outer circumferential side; The interval 15b of groove, its drive cam roller 13 makes it from the interval 15a of described standby, through near the pivot of described tangential cam 15, until opposition side; And 15c between the open zone, it is formed at the end side of the interval 15B of described groove.That is, 15c between the interval 15a of described standby, the interval 15b of groove and open zone becomes the driving link of tangential cam 15, and its guiding is as the cam roller 13 of driven member.
And, move to the line off-position if cut off cutting knife 2 by the driving of cylinder 6, then via cutting off cutting knife platform 3, movable cutter driving pin 21, movable cutting knife platform 10 and movable slitter shaft 11, movable cutter driving wrist 12 is rotated along Fig. 2 and arrow A 3 directions shown in Figure 4.Thus, afterwards, corresponding to the rotation of upper axle, move by tangential cam 15 position that cam roller 13 moves to the interval 15a of standby, namely can engage with tangential cam 15, and movable cutting knife 9 is rotated with machine spindle (upper axle) interlock.
(movable cutting knife)
Below, the structure of the movable cutting knife 9 that present embodiment is related to is elaborated.
As shown in Figure 6, movable cutting knife 9, its base end part (end) can be installed on the movable cutting knife platform 10 by screw with freely dismantling, and pars intermedia has bend and extends in the horizontal direction, the acutangulate pointed shape of its leading section (other end) shape.
Described movable cutting knife 9, be set to and centered by movable slitter shaft 11, the direction along arrow A 2 and arrow B 2 swing, in its whole shift action process, dodge above middle still 23, make simultaneously its front end pass through (with reference to Fig. 9～Figure 12, Figure 14 and Figure 16) than more close needle downing position 32 1 sides of the periphery of middle still 23.And the movable cutting knife 9 that present embodiment relates to such as Figure 12 and shown in Figure 14, can move by advancing and retreat in the space 33 below being arranged at needle plate 25.
Near the leading section of movable cutting knife 9, such as Fig. 6, Figure 17 and shown in Figure 21, arrange: line capture unit 9d, it catches reach the standard grade T1 and the T2 that rolls off the production line when retreating; Blade 9c, it is arranged at the front of movable cutting knife 9, cuts off suture with the blade 2a co-operating of cutting off cutting knife 2; Roll off the production line on the groove shape and dodge the 9b of section, it is forming between the blade from the line capture unit on side in the outside, for the T1 that reaches the standard grade is dodged with the T2 that rolls off the production line; And reach the standard grade and dodge the 9a of section, it prevents that the cut T1 of reaching the standard grade of online off-position is by movable cutting knife 9 and fastening spring described later 29 clampings.In addition, the movable roughly integral body of cutting knife 9 from base end part to leading section forms prism-shaped, the nose angle θ of its upper surface
1And the nose angle θ of lateral surface
2, be set in respectively in the scopes of 25～30 degree (with reference to Figure 15 (a), (b) and Figure 21).
As shown in figure 17, reach the standard grade dodge the 9a of section become by line capture unit 9d among reach the standard grade T1 and the T2 that rolls off the production line that catching position catches, the T1 that only reaches the standard grade can keep out of the way keeps out of the way the space, it is easily extracted the remaining T1 of reaching the standard grade of its suture needle 24 sides after movable cutting knife 9 retreats reach the standard grade to the line off-position T1 and the T2 that rolls off the production line and is cut off to the cloth top.
On roll off the production line and dodge the 9b of section, such as Figure 15 (a), (b), Figure 21 and shown in Figure 23, form towards the front of these movable cutting knife 9 peripheries through the below of movable cutting knife 9 from line capture unit 9d.Roll off the production line on described and dodge the 9b of section, make reach the standard grade T1 and the T2 that rolls off the production line that are caught by line capture unit 9d can keep out of the way than the lateral surface of this movable cutting knife 9 more in the inner part keep out of the way the space.And, in the slot part of dodging the 9b of section that on this, rolls off the production line and the boundary portion between the lateral surface of movable cutting knife 9 form edge 9e.
(fastening spring)
Fastening spring 29 is such as Fig. 9～Figure 11 and Figure 16～shown in Figure 19, utilize screw to be fixed on to be installed on the upper surface of the fastening spring platform 30 on the still pillow block 1, so that its base end part is disposed at movable cutting knife 9 and cuts off between the cutting knife 2 at above-below direction (Z-direction).And, the front end of fastening spring 29, the medial surface (the oblique line section shown in Figure 20 (a)) of movable cutting knife 9 front ends in edge extends to the moving direction that advances of described movable cutting knife 9.
Described fastening spring 29 has: the clamping section 29a that rolls off the production line, and it steps up the extension bent intermediate of spring 29 at this, thereby protrudes towards movable cutting knife 9 sides; And the hook line 29b of section, its front end at extension forms up and down two strands コ word shape.That is, the fastening spring 29 that present embodiment relates to forms roll off the production line clamping section 29a and the hook line 29b of section, and front end arranges the hook line 29b of section (with reference to Figure 17) from rolling off the production line clamping section 29a elongation at front end.
Described fastening spring 29 is made of spring material, and the mode pretension with the medial surface that pushes movable cutting knife 9 in the whole shift action process of movable cutting knife, makes the medial surface sliding-contact of roll off the production line clamping section 29a and described movable cutting knife 9 at least.
Clamping section 29a rolls off the production line, after suture cuts off, by with medial surface (the oblique line section shown in Figure 20 (a)) co-operating of movable cutting knife 9, the roll off the production line end of T2 of clamping to form and to make and the clamping part of the present invention (maintaining part) of the T2 that keeps rolling off the production line in order beginning next time.The described clamping section 29a that rolls off the production line makes by the height of the T2 that rolls off the production line of line capture unit 9d seizure, drops in the width range on its above-below direction.
The hook line 29b of section when movable cutting knife 9 retreats, hooks the T2 that rolls off the production line from the downside of the line capture unit 9d of described movable cutting knife 9.Namely, the hook line 29b of section is after the T2 that will be rolled off the production line by line capture unit 9d catches, and its front end passes through the downside of the T2 that rolls off the production line and intersecting than more close movable cutting knife 9 one sides of the described T2 of rolling off the production line, and this T2 that rolls off the production line is that therefrom still 23 is extracted out, via the downside of middle still jut 23a, strained by line capture unit 9d.Thus, the hook line 29b of section can prevent from being come off and falling from the described hook line 29b of section by the T2 that rolls off the production line that line capture unit 9d catches, and can reliably the T2 that rolls off the production line be guided to the clamping section 29a that rolls off the production line.
(cable guiding device)
Cable guiding device 31 is removably mounted near the point of a knife 2a that cuts off cutting knife 2 by screw shown in Figure 23～25.Described cable guiding device 31, be installed on the described cut-out cutting knife 2 from the opposition side with movable cutting knife 9 across cutting off cutting knife 2, make one distolateral (right side among Figure 23 and Figure 24) to cover the mode of the point of a knife 2a integral body of cutting off cutting knife 2, form to movable cutting knife 9 lateral bends, extend to the front side (right side among Figure 23 and Figure 24) of described point of a knife 2a.One end of described cable guiding device 31, the end of upside is further extended and is extended (with reference to Figure 23 and Figure 24) in the mode along the lateral surface of movable cutting knife 9, become the 31a of hanging wire section, the 31a of this hanging wire section prevents from contacting with the edge 9e of T2 with the slot part upside of dodging the 9b of section of rolling off the production line that roll off the production line from the T1 that reaches the standard grade that line capture unit 9d is being stitched through the pin hole 26b of feeding tooth 26 on cloth.Namely; cable guiding device 31 can be near the front end of the point of a knife 2a that cuts off cutting knife 2 hook reach the standard grade T1 and the T2 that rolls off the production line; the T1 that reaches the standard grade that movable cutting knife 9 online catching positions catch guides so that can not contact with edge 9e with the T2 that rolls off the production line; thereby, it is protected can not guide reach the standard grade T1 and the T2 that rolls off the production line between the point of a knife 2a of described edge 9e and cut-out cutting knife 2.
In addition, Sewing machines in the present embodiment, also has the not shown control part as control module, the sewing machine electromotor of its control cylinder 6 and driving machine spindle, so that pass through the driving of cylinder 6, movable cutting knife 9 together rotates along with cutting off cutting knife 2, and cam roller 13 moves to the position that can engage with tangential cam 15, afterwards tangential cam 15 actions make movable cutting knife 9 rotate with machine spindle (upper axle) interlock.
(action specification of embodiment)
Below, the action of Sewing machines with said structure is described.
At first, make in the process, the connecting rod front end 6a of cylinder 6 is outstanding to arrow B 1 direction, and cylinder union body 7 is configured in initial position shown in Figure 4.Therefore, become that to cut off going-back position that cutting knife 2 and movable cutting knife 9 be configured in arrow B 2 directions simultaneously be state (with reference to Fig. 9) on the initial position.
Then, if by the depressing backward of not shown sewing machine pedal, cut off the line signal to control part (diagram slightly) input, then to cylinder 6 injecting gas, connecting rod front end 6a moves to arrow A 1 direction.Thus, as shown in Figure 5, cylinder union body 7 moves to arrow A 1 direction, via cutter driving wrist 5 and cut-out slitter shaft 4, cuts off cutting knife platform 3 and rotates (with reference to Fig. 2) to arrow A 2 directions.And in the moment that described sewing machine pedal is depressed backward, sewing machine electromotor begins rotation.
Rotate to arrow A 2 directions if cut off cutting knife platform 3, then described cut-out cutting knife platform 3 engages with the movable cutter driving pin 21 of the lower surface that is fixed on movable cutting knife platform 10, and movable cutting knife platform 10 also rotates to the direction of arrow A 2 thus.Turn to the line off-position by cutting off cutting knife 2 to arrow A 2 directions, via movable cutting knife platform 10 and movable slitter shaft 11, movable cutter driving wrist 12 rotates to arrow A shown in Figure 23 directions, become the state that cam roller 13 engages with the interval 15a of the standby of tangential cam 15, cutting off cutting knife platform 3 becomes the state that rotation temporarily stops.
In the process that cam roller 13 moves along the interval 15a of the standby of the tangential cam 15 shown in Fig. 8 (a)～(c), movable cutting knife 9 and cut-out cutting knife 2 are near the state (with reference to Figure 10) of standby needle downing position, as shown in figure 14, outer still 22 hooks at its tip reaches the standard grade T1 and after making the T1 that reaches the standard grade form triangle, shown in Fig. 8 (d), during to the pulling amount of reaching the standard grade, cam roller 13 is by the maximal end point of the interval 15a of standby at still.Then, by along the interval 15b drive cam of groove roller 13, movable cutter driving wrist 12 swings to arrow A 3 directions, and movable cutting knife 9 is advanced further to the direction of arrow A 2.And, if cam roller 13 interval 15b guiding from the interval 15a of the standby shown in Fig. 8 (a)～(c) to the groove shown in Fig. 8 (d) is then cut off 3 beginnings of cutting knife platform and is again rotated.And if lock at the caging bolt 27 that cuts off 3 installations of cutting knife platform and limiting plate 28, the rotation of then cutting off cutting knife platform 3 is restricted, and cuts off cutting knife 2 and is configured in (with reference to Figure 10) on the suture off-position.Under this state, become near the pin center 32 that falls that extends to needle plate 25 belows state (with reference to Figure 12) as the point of a knife 2a of the front end that cuts off cutting knife 2.
At this moment, the front end of movable cutting knife 9 such as Figure 10～Figure 12 and movement shown in Figure 14 and insert in the triangle of the T1 that reaches the standard grade are so that it passes the space 33 than the below of the needle plate 25 of more close pin center 32 1 sides that fall of middle still jut 23a and middle still guide portion 25a and feeding tooth 26.
If tangential cam 15 continues rotation, cam roller 13 moves to the progressive position of movable cutting knife shown in Fig. 8 (e), and then movable cutting knife 9 is back to the line catching position of stepping back certain distance than progressive position shown in Figure 11.
Then, utilize the interval 15b of groove and the moving direction of movable cutter driving wrist 12 to the counter-rotating of arrow B 3 directions, catch roll off the production line T1, T2 (with reference to Figure 17 and Figure 22) by the line capture unit 9d of the movable cutting knife 9 that retreats to arrow B 2 directions.
At this moment, at the outer circumferential side of movable cutting knife 9, as shown in figure 23, become the state on the 31a of hanging wire section that reach the standard grade T1 and the T2 that rolls off the production line be hooked on cable guiding device 31.And the interior all sides at movable cutting knife 9 such as Figure 17 and shown in Figure 22, become the T1 that reaches the standard grade and keep out of the way the state of dodging the 9a of section to reaching the standard grade of movable cutting knife 9.
If tangential cam 15 continues rotation, cam roller 13 is directed to the line off-position shown in Fig. 8 (f), and then movable cutting knife 9 retreats to line off-position (with reference to Figure 16).Then, after the hook line 29b of section of the clamped spring 29 of the T2 that rolls off the production line hooked, by point of a knife 2a and the movably co-operating of the blade 9c of cutting knife 9 of cutting off cutting knife 2, reach the standard grade T1 and the T2 that rolls off the production line were cut off (with reference to Figure 18).And cam roller 13 passes the open space 15c of tangential cam 15, is released in the periphery of described tangential cam 15, is disengaged (with reference to Fig. 8 (g)) with interval the engaging of 15b of groove.
Here, as shown in figure 12, the blade 9c of movable cutting knife 9 passes pin center 32 and rotates, and point of a knife 2a is near near the of the described pin center 32 that falls and standby.Therefore, by movable cutting knife 9 with the co-operating of cutting off cutting knife 2 suture T1, when T2 is cut off, pin center 32 to the distance of point of a knife 2a significantly shortens than prior art from falling.
And after reach the standard grade T1 and the T2 that rolls off the production line were cut off, as shown in figure 19, the T1 that reaches the standard grade dodged the 9a of section and extracts and become free state from reaching the standard grade, the T2 that the rolls off the production line clamping section 29a clamping of being rolled off the production line.
In addition, as shown in figure 16, if movable cutting knife 9 then stops sewing machine electromotor by control part by the suture off-position, suture needle 24 stops at upper position (upper stop position).Meanwhile, from control part output tangent line reset signal, the connecting rod front end 6a of cylinder 6 moves to arrow B 1 direction corresponding to described output signal.Thus, cut off cutting knife 2 and reset to initial position shown in Figure 9 with movable cutting knife 3.At this moment, as shown in Figure 8, the interval 15b of the groove of tangential cam 15 is until the cut-out end position of reach the standard grade T1 and the T2 that rolls off the production line, because after described cut-out, when suture needle 24 stops on the stop position, cam roller 13 moves to 15c between the open zone, therefore when movable cutting knife 3 resets to initial position, can not hinder the action of this movable cutting knife 3.
(effect of embodiment)
As mentioned above, according to the Sewing machines of present embodiment, because movable cutting knife 9, its front end can pass through than more close needle downing position 32 1 sides of the periphery of middle still 23, so the line off-position can be than prior art more near needle downing position 32 sides.Thus, can when using existing middle still guide portion and needle plate, shorten the residual end length of line residual on the sewn object.Thereby, can shorten the time that post-processed such as plucking line needs, can realize the raising of production efficiency.
In addition, because movable cutting knife 9 is dodged above middle still 23 in its whole shift action process, therefore the upper surface of middle still 23 is approached near the needle plate 24.Thus, the line amount of the T2 that rolls off the production line that the bobbin in being installed on middle still 23 reels is increased, can reduce the number of times of changing bobbin, thereby can realize the raising of production efficiency.
In addition, because by driving a cylinder 6, can realize making and cut off the action that cutting knife 2 and movable cutting knife 9 rotate and make in the action of this movable cutting knife 9 and upper axle interlock any one, therefore can suppress the number of parts, realize the inhibition of cost.
In addition, the motion track of the blade 9c of movable cutting knife 9 can make the suture off-position more near needle downing position 32 through the pin center 32 that falls.Thereby, can further shorten the residual end length of suture residual on the sewn object, so can boost productivity.
In addition, be prism-shaped by making movable cutting knife 9, for example, compare with the movable cutting knife that existing formation is tabular, can improve the rigidity of this movable cutting knife 9.Thus, by with the co-operating of cutting off cutting knife 2, can cut off the suture thicker than prior art, improve the free degree of the suture that uses when making.
In addition, by dodging the 9a of section movable cutting knife 9 reaching the standard grade of setting, the end of the T1 that reaches the standard grade after can preventing from cutting off is by these movable cutting knife 9 clampings.Therefore, owing to after suture is cut off, the remaining T1 of reaching the standard grade in the suture needle 24 promptly can be extracted from cloth, therefore can easily the cloth after making be taken out, realize the raising of productivity ratio.
In addition, because with the nose angle θ of the upper surface of movable cutting knife 9
1Nose angle θ with lateral surface
2In any one all is made as and is less than or equal to 30 degree, so reach the standard grade T1 and the T2 that rolls off the production line can be released to the moving direction that advances of this movable cutting knife 9, but promptly insert in the wire loop of reaching the standard grade.Therefore, catching position is successfully carried out the line capturing motion online, improves the reliability of Sewing machines action.And, because with the nose angle θ of the upper surface of movable cutting knife 9
1Nose angle θ with lateral surface
2Any all be made as more than or equal to 25 degree, therefore the front end length of this movable cutting knife 9 can be not long and can guarantee the width of this movable cutting knife 9.Therefore, can suppressing movable cutting knife 9 in space and displacement that base inside accounts for, obtain above-mentioned effect.
In addition, owing to being with all component mountings the structure in a still pillow block 1 on relevant with tangent line, therefore can realize the save space in the base, in addition, for example can also make the present invention corresponding with the two-hand Sewing machines.
In addition, by cable guiding device 31 is set, the T1 that can prevent from reaching the standard grade contacts with edge 9e with the T2 that rolls off the production line.Therefore, reach the standard grade T1 and the T2 that rolls off the production line that catch when the line catching position retreats to the line off-position at movable cutting knife 9 can not imported by edge 9e and cut off cutting knife 2 sides, can prevent this edge 9e and cut off will reach the standard grade T1 and the T2 that rolls off the production line of cutting knife 2 and cut off.Namely, the off-position of reach the standard grade T1 and the T2 that rolls off the production line can be defined as only on the normal off-position of being stipulated by the co-operating of movable cutting knife 9 and cut-out cutting knife 2, therefore residual residual end length on the cloth can shortened, and at suture needle 24 or residual reach the standard grade T1 and the T2 that rolls off the production line of middle still 23 sides, its length can be defined as the suitable length of regulation.And, thus, because it is bad to prevent that the residual end processing of the suture of sewn object side from reaching the winding of reaching the standard grade and rolling off the production line when making next time, therefore can boost productivity.
In addition, cut off on the cutting knife 2 by cable guiding device 31 is removably mounted on, for example, cable guiding device 31 can also be pulled down and cut off the again grinding of cutting knife 2, thereby can suppress cost.
(other)
In addition, as making the holding section that cuts off cutting knife 2 and movable cutting knife 9 interlocks, in the present embodiment, be the lower surface that movable cutter driving pin 21 is arranged on movable cutting knife platform 10, but also can be that it is arranged on the upper surface of cut-out cutting knife platform 3 or the structure of side.
In addition, also can be to replace the tangential cam 15 that engages with movable cutter driving wrist 12 and the structure of link cylinder.In this situation, drive the speed of the gas of this cylinder by control, perhaps by the rotating speed of not shown control part control sewing machine electromotor, control the action of movable cutting knife 9, also can obtain the same effect of above-mentioned embodiment.
In addition, fastening spring 29, roll off the production line clamping section 29a and the hook line 29b of section also can for independently, that is, make it consist of (with reference to Figure 26 (a)) by different parts.According to this structure, also can obtain the effect same with above-mentioned embodiment.And, the hook line 29b of section of fastening spring 29 front ends, also can be to become downwards skewed (with reference to Figure 26 (b)) that the point degree is arranged, perhaps, also can be the outstanding shape with stage portion (with reference to Figure 26 (c)) of lower side forward end only.
Claims (5)
1. Sewing machines is characterized in that having:
Needle plate, it is fixed on the sewing machine base;
The feeding tooth, it passes in and out at described needle plate, carries sewn object;
The still pillow block of horizontal container, it is installed in the described base;
Outer still, it rotatably is supported on the described still pillow block, has the tip of living in the line wire loop by rotary hook;
Middle still, it rotatably is supported in the described outer still, and the line of having reeled and having rolled off the production line is installed
Axle;
Middle still guide portion, it engages still in the restriction with jut on being arranged at described middle still
Rotation;
Cut off cutting knife, it has blade, and rotatably is supported on the described still pillow block, is cutting off movement between the cut-out cutting knife line off-position that cutting knife initial position and the pin central side that falls from this cut-outs cutting knife initial position to suture needle advance;
Movable cutting knife, it rotates at described still pillow block, mobile between movable cutting knife initial position, movable cutting knife initial position advances from this line catching position and the movable cutting knife line off-position that retreats from this line catching position in order, reach the standard grade and roll off the production line by cutting off in described movable cutting knife line off-position and the co-operating of described cut-out cutting knife;
Cylinder, it is fixed on the described still pillow block;
The cylinder union body, it is installed on the connecting rod front end as the operating member of described cylinder;
The cut-out slitter shaft of hollow, it rotatably is supported on the described still pillow block;
Cut off the cutting knife platform, the one end is held the upper end that is fixed on described cut-out slitter shaft tightly;
Cut off the cutter driving arm, the one end is held the lower end that is fixed on described cut-out slitter shaft tightly, and the other end links described cylinder union body;
As the movable cutter driving pin of holding section, it should cut off cutting knife and link with movable cutting knife by cutting off the rotation of cutting knife from described cut-out cutting knife initial position to described cut-out cutting knife line off-position, and movable cutting knife is rotated in this rotation direction;
Movable slitter shaft, it runs through up and down described cut-out slitter shaft and rotatably inserts;
Movable cutting knife platform, the one end is fixed on the upper end of described movable slitter shaft;
Movable cutter driving wrist, the one end is held the lower end that is fixed on described movable slitter shaft tightly;
Tangential cam, itself and machine spindle link and rotate;
Cam roller, it is arranged on the lower side of described movable cutter driving wrist; And
Movable cutting knife restoring board, it is fixed on the bottom of described cylinder union body,
Wherein, described movable cutting knife, its center of rotation is positioned at the opposition side at the described pin center that falls across the pivot of described outer still, in whole shift action process, dodge above described middle still, simultaneously its front end through in described pin center one side that falls of still periphery,
If the connecting rod front end of described cylinder moves and makes described cut-out cutting knife rotation to a direction, engaging by described cut-out cutting knife platform and described movable cutter driving pin then, described movable cutting knife platform and described movable cutting knife are rotated, and, via described movable cutting knife platform and described movable slitter shaft movable cutter driving wrist is rotated, described cam roller moves to the position that can engage with described tangential cam, afterwards, rotation according to machine spindle makes the tangential cam action, described movable cutting knife and machine spindle link and turn to movable cutting knife line off-position thus
If the connecting rod front end of described cylinder moves to the direction with a described opposite direction, then movable cutter driving wrist is connected to the front end of described movable cutting knife restoring board and is pushed back, and described movable cutting knife resets to movable cutting knife initial position.
2. Sewing machines according to claim 1 is characterized in that,
Described movable cutting knife, the motion track of its blade is through the described pin center that falls.
3. Sewing machines according to claim 1 is characterized in that,
Described movable cutting knife, its at least a portion forms prism-shaped.
4. Sewing machines according to claim 1 is characterized in that,
Described movable cutting knife has to reach the standard grade dodges section, and it prevents from reaching the standard grade by this movable cutting knife clamping described line off-position is cut.
5. Sewing machines according to claim 1 is characterized in that,
Described movable cutting knife, the nose angle of its upper surface and the nose angle of lateral surface are in the scope of 25～30 degree.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006251227A JP5042573B2 (en) | 2006-09-15 | 2006-09-15 | sewing machine |
| JP2006251227 | 2006-09-15 | ||
| JP2006-251227 | 2006-09-15 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101144230A CN101144230A (en) | 2008-03-19 |
| CN101144230B true CN101144230B (en) | 2013-02-13 |
Family
ID=39105422
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710154625.3A Active CN101144230B (en) | 2006-09-15 | 2007-09-17 | Sewing machine |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP5042573B2 (en) |
| CN (1) | CN101144230B (en) |
| CZ (1) | CZ2007644A3 (en) |
| DE (1) | DE102007045598B4 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106868734A (en) * | 2015-10-30 | 2017-06-20 | 兄弟工业株式会社 | Tangent mechanism and sewing machine |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009061020A (en) | 2007-09-05 | 2009-03-26 | Brother Ind Ltd | Thread cutting apparatus for sewing machine |
| DE102008030620B3 (en) * | 2008-06-24 | 2009-12-24 | Pfaff Industrie Maschinen Ag | Method and device for cutting the needle and the hook thread on lockstitch sewing machines with gripper rotating in a horizontal plane |
| TWM365364U (en) * | 2009-03-12 | 2009-09-21 | Chee Siang Ind Co Ltd | Automatic thread-cutting device of sewing machine |
| JP2010213767A (en) * | 2009-03-13 | 2010-09-30 | Juki Corp | Thread-cutting device of sewing machine |
| CN101845722B (en) * | 2009-03-24 | 2012-12-19 | 启翔针车（上海）有限公司 | Automatic thread cutting device of sewing machine |
| JP2010246706A (en) * | 2009-04-15 | 2010-11-04 | Juki Corp | Sewing machine |
| JP2010246841A (en) * | 2009-04-20 | 2010-11-04 | Juki Corp | Sewing machine |
| JP2011101718A (en) * | 2009-11-11 | 2011-05-26 | Juki Corp | Thread cutting device of sewing machine |
| JP2011212151A (en) * | 2010-03-31 | 2011-10-27 | Brother Industries Ltd | Sewing machine |
| JP2011229751A (en) * | 2010-04-28 | 2011-11-17 | Brother Ind Ltd | Sewing machine |
| CN102454065A (en) * | 2010-10-29 | 2012-05-16 | 吴江市德胜服饰有限公司 | Yarn cutting device |
| JP6031255B2 (en) * | 2011-05-18 | 2016-11-24 | Juki株式会社 | sewing machine |
| DE102011102928A1 (en) * | 2011-05-23 | 2012-11-29 | Pfaff Industriesysteme Und Maschinen Ag | Sewing machine with thread clamp |
| CN102286856A (en) * | 2011-07-19 | 2011-12-21 | 吴江金时利织造有限公司 | Weaving dividing mechanism |
| CN103726241B (en) * | 2013-12-27 | 2016-08-17 | 浙江飞凤缝制设备有限公司 | Column Sewing machine with needle feed thread cutting mechanism |
| CN108589081A (en) * | 2018-08-02 | 2018-09-28 | 吴体民 | The cutting facility of column sewing machine |
| WO2020054555A1 (en) * | 2018-09-11 | 2020-03-19 | 株式会社Ｔｉｓｍ | Sewing machine with which it is possible to sew cord material, and cord cutting device |
| PT3875652T (en) * | 2020-03-05 | 2022-02-22 | Strobel Spezialmaschinen Gmbh | Blind stitch sewing machine with thread cutter |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5964170A (en) * | 1997-05-28 | 1999-10-12 | G.M. Pfaff Aktiengesellschaft | Sewing machine with thread-cutting device |
| CN1412375A (en) * | 2001-10-15 | 2003-04-23 | 重机公司 | Thread cutting device for sewing machine |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4421046A (en) | 1980-02-21 | 1983-12-20 | Mitsubishi Denki Kabushiki Kaisha | Thread cutter assembly in sewing machine |
| DE8630911U1 (en) | 1986-11-18 | 1987-01-15 | Duerkoppwerke Gmbh, 4800 Bielefeld, De | |
| JP2797740B2 (en) * | 1991-02-28 | 1998-09-17 | ブラザー工業株式会社 | Sewing machine thread cutting device |
| JPH05177078A (en) * | 1991-12-20 | 1993-07-20 | Aisin Seiki Co Ltd | Thread cutting horizontal shuttle for sewing machine |
| JPH05253378A (en) * | 1992-03-11 | 1993-10-05 | Aisin Seiki Co Ltd | Machine cotton-cutter of sewing machine |
| JPH07289765A (en) | 1994-04-27 | 1995-11-07 | Juki Corp | Thread cutting device for sewing machine |
-
2006
- 2006-09-15 JP JP2006251227A patent/JP5042573B2/en active Active
-
2007
- 2007-09-14 DE DE102007045598.6A patent/DE102007045598B4/en active Active
- 2007-09-17 CN CN200710154625.3A patent/CN101144230B/en active Active
- 2007-09-17 CZ CZ20070644A patent/CZ2007644A3/en unknown
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5964170A (en) * | 1997-05-28 | 1999-10-12 | G.M. Pfaff Aktiengesellschaft | Sewing machine with thread-cutting device |
| CN1412375A (en) * | 2001-10-15 | 2003-04-23 | 重机公司 | Thread cutting device for sewing machine |
Non-Patent Citations (3)
| Title |
|---|
| JP特开平5-177078A 1993.07.20 |
| JP特开平5-245287A 1993.09.24 |
| JP特开平5-253378A 1993.10.05 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106868734A (en) * | 2015-10-30 | 2017-06-20 | 兄弟工业株式会社 | Tangent mechanism and sewing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101144230A (en) | 2008-03-19 |
| DE102007045598B4 (en) | 2022-03-03 |
| CZ2007644A3 (en) | 2008-11-19 |
| DE102007045598A1 (en) | 2008-03-27 |
| JP2008068004A (en) | 2008-03-27 |
| JP5042573B2 (en) | 2012-10-03 |
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