CN1179076C - Sewing machine with cutter - Google Patents
Sewing machine with cutter Download PDFInfo
- Publication number
- CN1179076C CN1179076C CNB011157275A CN01115727A CN1179076C CN 1179076 C CN1179076 C CN 1179076C CN B011157275 A CNB011157275 A CN B011157275A CN 01115727 A CN01115727 A CN 01115727A CN 1179076 C CN1179076 C CN 1179076C
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- knife
- power transmission
- transmission shaft
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- 238000009958 sewing Methods 0.000 title claims abstract description 61
- 230000005540 biological transmission Effects 0.000 claims abstract description 71
- 239000004744 fabric Substances 0.000 claims description 23
- 230000008859 change Effects 0.000 claims description 7
- 230000033228 biological regulation Effects 0.000 claims description 2
- 230000007246 mechanism Effects 0.000 abstract description 9
- 230000009471 action Effects 0.000 description 20
- 238000010417 needlework Methods 0.000 description 10
- 230000000694 effects Effects 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 4
- 230000004323 axial length Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000009940 knitting Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000008093 supporting effect Effects 0.000 description 2
- 210000002268 wool Anatomy 0.000 description 2
- 206010034703 Perseveration Diseases 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007688 edging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000032696 parturition Effects 0.000 description 1
- 239000003351 stiffener Substances 0.000 description 1
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Abstract
The present invention relates to a sewing machine having cutters to surely drive a movable cutter and perform stable hem stitching at high speed. A cutter shaft 42 is arranged along the front surface of a bed body B having a cylindrical bed B1, which cutter shaft is connected to a cam shaft 50 for driving a thread feeding cam 5 by way of a transmission mechanism having an eccentric ring 53 and a transmission arm 48, a movable cutter is attached to the tip end of the cutter shaft 42 extending to the front position of the cylindrical bed B1, the forward and backward turning of the cutter shaft 42 in accordance with the rotation of the cam shaft 50 is transmitted to the movable cutter so that the cutter appears or disappears in front of the needle location set on the cylindrical bed B1.
Description
The present invention relates to a kind of Sewing machines, by movable cut-off knife is haunted on the sewing machine base of needle downing position front side, and be slidingly connected, cut off with the edge of the cloth that will send into needle downing position with the fixedly cut-off knife that is configured in this position with cut-off knife.
For example making in the process of knitting wool pants, trousers for baby etc., when elastic cord is set at the waist place by portion, be sending into needle downing position with the state of going into the inside side according to set width Zhe, to carry out above-mentioned edge is sewn to the ruffle sewing of the cloth of face side as its edge of the cloth of making object.
In order to implement above-mentioned ruffle sewing, what used is for example special Sewing machines with cut-off knife that flat 10-287 communique etc. is disclosed of opening in the past, dispose the movable cut-off knife that fluctuates by transmission from machine spindle in the preceding bottom of needle downing position, and the order haunt on the sewing machine base along the hook-shaped and crooked tip end cutting of above-mentioned movable cut-off knife constitute so that it is connected to the fixedly cut-off knife that is configured in this position.
According to above-mentioned formation, implement the ruffle sewing and make it can be caught by the tip end cutting of above-mentioned movable cut-off knife and leave behind in edge of the cloth that returns of side Zhe inside, and and the said fixing cut-off knife between leave approximately certain Zhe and return under the width and cut off, the result can carry out stable ruffle sewing with high efficiency to the edge after cutting off.
In aforesaid Sewing machines with cut-off knife, above-mentioned movable cut-off knife is to install in the mode that its bottom is embedded in the cut-off knife axle that is set up in the inside of sewing machine base, this cut-off knife axle is the same with the power transmission shaft of other movable parts (pin, end pin, feed gear wheel etc.) usefulness of each one of Sewing machines, be linked to machine spindle by known eccentric stiffener, and to rotation that should machine spindle and in set angle repeatedly rotation constitute.The movable cut-off knife that forms by above-mentioned drive mechanism, rotation that can corresponding machine spindle and shaking along the axle of cut-off knife axle, the front end gear part moving up and down by above-mentioned shaking will be haunted on the sewing machine base, and connects with fixing cut-off knife, and the edge of above-mentioned cloth is cut off.
On the other hand, above-mentioned ruffle sewing is passed through portion for the elastic cord that forms waist, be to be used as object and to carry out with the thing of making that is made into the tubular kenel of above-mentioned knitting wool pants, trousers for baby etc., so the Sewing machines of ruffle sewing usefulness generally is that following array structure constitutes: in a side of the sewing machine body of built-in machine spindle, outstanding setting can be inserted the tube-like base that logical tubular is made thing, and sets needle downing position on the top of above-mentioned tube-like base.
When with have as the sewing of the ruffle of above-mentioned tube-like base with Sewing machines constitute possess have above-mentioned movable cut-off knife and fixedly cut-off knife have the Sewing machines of cut-off knife the time, the feed gear wheel that will become the effect of having followed the feeding tailoring cloth as the movable cut-off knife of operating space with the front side of needle downing position together, be accommodated in the inside of tube-like base, and in known technology, the power transmission shaft (cut-off knife axle) that the above-mentioned movable cut-off knife of the power transmission shaft double as that above-mentioned feed gear wheel is used is used uses, but and in the confined space that is disposed at tube-like base inside of both transmission mechanism mutually noninterferes.
Yet, logical to make thing as the tubular of object be that prerequisite determines to the size of above-mentioned tube-like base inserting, so, just have the Sewing machines commercialization of the tube-like base that possesses the thin bore that diameter 180mm degree is arranged to come out in order to comprise that undersized tubular makes the making of wide scope of thing.In this Sewing machines, the feed gear wheel that must will be positioned at tube-like base inside is with the thin boreization of power transmission shaft, so as previously mentioned, it is that the cut-off knife axle used of movable cut-off knife is when using at double as, the effect of the load that this power transmission shaft is applied in the time of promptly can cutting off because of movable cut-off knife is attended by buckling phenomenon and rotates repeatedly, so not only utilize the cut-out action of movable cut-off knife to have problem, and utilize feed gear wheel to come the action of feeding also to have the possibility that produces obstruction, therefore just caused under high speed, carrying out the problem of stable sewing action.
The present invention is promptly because the problems referred to above, its purpose is to provide a kind of Sewing machines with cut-off knife that can carry out stable ruffle sewing under high speed, this Sewing machines is to come the movable cut-off knife of haunting before the needle downing position is carried out transmission by the cut-off knife axle that is configured in the base body outside, and on the tube-like base of thin bore, have needle downing position, so can not move and utilize the feed motion of feed gear wheel to cause obstruction the cut-out that utilizes movable cut-off knife.
The present invention is achieved through the following technical solutions: the Sewing machines with cut-off knife of the 1st invention of the present invention comprises:
One cylindrical base in a side-prominent setting of the base body that is built-in with machine spindle, and is set with needle downing position at an upper portion thereof; The cut-off knife axle sets up along the anterior outside of above-mentioned base body and cylindrical base, rotates repeatedly in the angular range of regulation by the transmission from above-mentioned machine spindle; Movable cut-off knife is installed on an end of above-mentioned cut-off knife axle, and to should rotating repeatedly of cut-off knife axle and haunt the front portion of above-mentioned needle downing position; And fixing cut-off knife, breakking away with one of this movable cut-off knife is dynamically connected, and the edge that will send into the cloth of above-mentioned needle downing position cuts off, it is characterized in that,
Also comprise:
Power transmission shaft, its at least a portion is given prominence to configuration in the outside of above-mentioned base body, and sways by the transmission from above-mentioned machine spindle;
Transmission device is linked to the protuberance of above-mentioned power transmission shaft with the other end of this cut-off knife axle, and to rotation that should power transmission shaft and above-mentioned cut-off knife axle is rotated repeatedly.
In the present invention, it is the cut-off knife axle that will be set up along the anterior outside of the base body that has tube-like base in a side, be linked to the protuberance of the power transmission shaft in the base body outside via transmission device, and in the front position that extends to tube-like base movable cut-off knife is installed in the end of set above-mentioned cut-off knife axle, can utilize the transmission that comes from machine spindle the rotation of the corresponding power transmission shaft that produces the cut-off knife axle is rotated repeatedly, make above-mentioned rotation repeatedly reach movable cut-off knife and make it haunt the front portion of needle downing position again.
Again, the Sewing machines with cut-off knife of the 2nd invention, its characteristic is: the power transmission shaft in the 1st invention, double as is the power transmission shaft that is configured in the cam that spins of above-mentioned base body exterior.
In the present invention, the power transmission shaft that is disposed at the cam that spins of sewing machine base outside is to be held a concurrent post by the power transmission shaft of cut-off knife axle usefulness, and does not need special-purpose power transmission shaft.
Further, the Sewing machines with cut-off knife of the 3rd invention, its characteristic is: the transmission device in the 1st invention or the 2nd invention more includes: above-mentioned transmission device also comprises:
One eccentric hoop, a chimeric part that is supported on above-mentioned power transmission shaft;
One drive link, an end is embedded in above-mentioned cut-off knife axle, and the other end then is linked to above-mentioned eccentric hoop;
One change device changes the bond sites of this drive link and the above-mentioned eccentric hoop longitudinal direction at drive link.
In the present invention, power transmission shaft and cut-off knife axle are to be constituted by the chimeric drive link that is supported on the former eccentric hoop and is embedded in the latter links, and make the cut-off knife axle rotate repeatedly with the rotation of corresponding power transmission shaft; Even, the coupling position of eccentric hoop and the drive link long axis direction toward this drive link can be changed, by above-mentioned change, can regulate the action stroke of the movable cut-off knife that the rotation repeatedly because of the cut-off knife axle produced simply.
Below in conjunction with the description of drawings embodiments of the invention.
Fig. 1 is the overall structure oblique view with Sewing machines of cut-off knife.
Fig. 2 is the structure of its major part of cut-off knife mechanism that Sewing machines had with cut-off knife of the present invention and the oblique view of needle plate.
Fig. 3 is its main exploded perspective view partly of the cut-off knife mechanism shown in Fig. 2.
Fig. 4 be utilize movable cut-off knife and fixedly cut-off knife cut off the state description figure of cloth.
Fig. 5 is that the critical part of the connection relationship of expression cut-off knife axle and camshaft enlarges oblique view.
Fig. 6 is the outward appearance oblique view of other embodiment of the Sewing machines with cut-off knife of the present invention.
Below, conjunction with figs. and being described in detail with regard to embodiments of the invention.Fig. 1 is the overall structure oblique view with Sewing machines of cut-off knife of the present invention.
Illustrated Sewing machines has the C of foot that is arranged on the base body B by standing and supports the sewing machine arm A of its bottom, in addition, also have below sewing machine arm A in a parallel manner, at the tube-like base B1 of the thin bore of the side-prominent setting of base body B.
Vertical lower at the leading section of above-mentioned sewing machine arm A is supported with needle bar and push rod, and in the lower end of needle bar many pins 1,1 is installed ..., then be separately installed with in the lower end of push rod and push metal 2.On above-mentioned tube-like base B1, at above-mentioned pin 1,1 ... and the lower position of pushing metal 2 set up needle plate 3 (with reference to Fig. 2), and keeps not shown end pin and feed gear wheel in the inside of the tube-like base B1 of these needle plate 3 bottoms.
Above-mentioned pin 1,1 ..., by come from the inside of sewing machine arm A set up not shown on the transmission of axle, and with above-mentioned needle bar knee-action in comprising the set stroke up and down of needle plate 3.Push metal 2 and drop on the needle plate 3, be sandwiched between this needle plate 3 will be positioned at the last cloth W that sends into from its place ahead of base body B (with reference to the 4th figure) by set operation.
As above the flat sewing Sewing machines of Gou Chenging as shown in Figure 1, has cut-off knife mechanism 4 in the leading section front side of tube-like base B1.Fig. 2 is the structure of cut-off knife mechanism 4 its major parts and the oblique view of needle plate.Fig. 3 is the exploded perspective view of cut-off knife mechanism 4.
3 is the needle plates that are set up in above the leading section of aforesaid tube-like base B1 among Fig. 2.Substantial middle portion place at this needle plate 3, be used for making above-mentioned moving up and down pin 1 to form towards width mode arranged side by side, 1 ... when falling, can insert logical a plurality of (being 3 in the drawings) pin respectively and fall hole 30,30 ... so that set out needle downing position, and in the front and back of above-mentioned needle downing position and the left and right sides form the rectangular feed gear wheel hole 31,31 of opening that can make not shown feed gear wheel outstanding ...
On needle plate 3, shown in the white arrow of Fig. 2, cloth W (with reference to Fig. 4) sends into toward opposite side (rear side) from a side (front side) of longitudinal direction, and it is as follows that it makes process: make above-mentioned cloth W be sandwiched in above-mentioned needle plate 3 and pushing between the metal 2 (with reference to Fig. 1) of falling of portion from it earlier, utilize again from above-mentioned feeding hole 31,31 ... and protrude in not shown feed gear wheel on the needle plate 3, in set stroke, carry out intermittent feeding, and by with the same time of above-mentioned feeding in fall in above-mentioned pin and fall hole 30,30 ... pin 1,1 ... and the action that is disposed at the pin of the not shown end under the needle plate 3 is finished and is made.
Cut-off knife mechanism 4 comprises: the cut-off knife platform 40 that is fixedly set in front (the outstanding side that is provided with of the tube-like base B1) front of base body B; Corresponding with this cut-off knife platform 40 and be fixedly set in the pedestal 41 (with reference to Fig. 1) of the bottom end side front of base body B; The cut-off knife axle 42 that between them, is set up along the front, the outside of base body B; Its bottom is entrenched in from the movable cut-off knife 43 of the protuberance of the cut-off knife axle 42 of cut-off knife platform 40 extensions; With and the fixedly cut-off knife 44 that is slidingly connected mutually of opposite side and this movable cut-off knife 43 (right side of figure).Above-mentioned movable cut-off knife 43 is by moving from the aftermentioned transmission of machine spindle (not shown), and is slidingly connected with fixing cut-off knife 44 and the edge of the cloth W of feeding on needle plate 3 is cut off.
Cut-off knife platform 40 as shown in Figure 2 is to be fixed by the front front that a plurality of limit screws are pressed on base body B, and is located at the position on the right side of the needle plate 3 that is set up on the tube-like base B1.Cut-off knife axle 42 by along the axial length direction of front and 2 positions at interval by the set a pair of support bracket 40a of cut-off knife platform 40,40a supports, and a position that is positioned at its bottom end side is supported by above-mentioned pedestal 41, around axle, rotate freely, and as described above, along the front of base body B and set up.
The front end of cut-off knife axle 42 as shown in Figure 2 slightly is the front position of the above-mentioned needle plate 3 of perpendicular direction crosscut in the direction of feed with above-mentioned cloth W, and projects to the left side of the needle downing position that sets on this needle plate 3.
Above-mentioned movable cut-off knife 43 has along the blade 43a of front end hook-type bending, and the outstanding end of above-mentioned cut-off knife axle 42 is fixed in its bottom, and is shaken by the rotation repeatedly of the cut-off knife axle 42 that transmission described later produced, and constitutes so that above-mentioned blade 43a moves up and down.In needle plate 3, pin is fallen hole 30,30 ... the front portion, left side cut with proper width, form the vacancy portion 32 of rectangle, and the blade 43a of above-mentioned movable cut-off knife 43 front ends is as shown in Figure 2, protrude on the needle plate 3 via above-mentioned vacancy portion 32 when moving thereon.
Again, as shown in Figure 3, said fixing cut-off knife 44 is the tabular components that have blade 44a at a lateral edges of long axis direction, and it is adjacent to the installation site of movable cut-off knife 43 and is installed on the fixed station 45 that is bearing in cut-off knife platform 40, and as shown in Figure 2, dispose above-mentioned blade 44a along the side of the vacancy portion 32 of needle plate 3 one sides.This blade 44a is slidingly connected from the blade 43a of a side and the aforesaid movable cut-off knife 43 that can move up and down, and implements cutting action by above-mentioned abutting part.
Fig. 4 utilizes movable cut-off knife 43 and fixing cut-off knife 44 to cut off the state description figure of cloth.Above-mentioned cut-out action as shown in the figure, with the cloth W that its edge E sent into needle downing position inside under the state of side edgefold is object, when implementing ruffle when above-mentioned flanging portion is sutured in the face side of above-mentioned cloth W and sewing up, in arriving figure before the represented needle downing position of dotted line, above-mentioned folding edge E is cut off, and the flanging portion of remaining proper width.
Front position at needle downing position, as above-mentioned, the movable cut-off knife 43 that can move up and down can up push away above-mentioned cloth W by the inside side when up moving, and by the Zhe at this cloth W go into edge E near bend to hook-type blade 43a catch cloth, down moving as shown in FIG. the arrow under this state, can guide to the fixing slide contact part of the blade 44a of cut-off knife 44 and cut off.Continuity ground carries out by the moving up and down of the movable cut-off knife 43 that produces in the short period from the transmission of above-mentioned cut-off knife axle 42 in above-mentioned cut-out action, and the edge part that is trimmed by above-mentioned cut-out action is carried out the ruffle sewing.
As shown in Figure 2, in the pars intermedia of cut-off knife axle 42, be positioned at a pair of support bracket 40a of above-mentioned cut-off knife platform 40, chimericly between the support of 40a be fixed with coaxial spring carrier ring 46, and be equiped with helical spring 47 between two parties between the support bracket 40a of this spring carrier ring 46 and front, above-mentioned cut-off knife axle 42 then is to bottom end side, promptly see to right-hand pushing from the front by the elastic force of the above-mentioned helical spring 47 at the chimeric position that is applied to spring carrier ring 46.By above-mentioned pushing, the movable cut-off knife 43 of cut-off knife axle 42 front ends promptly can prop up knee-action under the state of the fixing blade 44a of cut-off knife 44 at its blade 43a, therefore can positively carry out the cut-out of cloth W between 44a at two blade 43a.In addition, the fixed position of spring carrier ring 46 can change in the axial length direction of cut-off knife axle 42, is the elastic force of changeable helical spring 47 by above-mentioned change, and can suitably sets above-mentioned blade 43a, the butt power of 44a.
For making aforesaid movable cut-off knife 43 knee-actions be applied to the transmission of cut-off knife axle 42, result from by near the bottom of above-mentioned pedestal 41 supportings.As shown in Figure 1, the downside at the pedestal 41 of the bottom end side front that is fixed on base body B disposes the cam 5 that spins.The above-mentioned cam 5 that spins is used to rotate from the transmission that is bearing in the machine spindle (not shown) of base body B inside, tension force with end needlework that the end pin that moves under needle downing position is supplied with is implemented intermittent increase and decrease effect, and fixing on the throne at base body B the bottom end side front and be parallel to the end (left end) of the camshaft 50 that above-mentioned cut-off knife axle 42 set up.
Above-mentioned camshaft 50 is positioned at the lower position of the C of foot of sewing machine arm A, and the supporting station 51 of the front by being fixedly set in base body B with in the peripheral free rotation mode of axle, is bearing in 2 positions that the axial length direction is provided with at interval.The other end of this camshaft 50 (right-hand member) surpasses the bottom end side end face of base body B and extends setting, and is connected with the not shown machine spindle that protrudes in the side end face by timing belt (timingbelt) 52.Camshaft 50 with above structure is used to from the transmission of machine spindle and along the peripheral rotation of axle, as the cam 5 that spins that is embedded in left end is worked to a continuous rotating drive shafts of direction.
In the front of base body B, the drawing lines plate 53 of end needlework is installed in this position of the cam 5 that spins of above-mentioned rotation, the cam 5 that spins then decides its position by it can be haunted in right amount above the drawing lines plate 53 in rotation.Supply with the end needlework that have from the line adjuster 6 of the foot C front that is installed in sewing machine arm A at above-mentioned drawing lines plate 53 places, these end needlework cross to take strides the haunt position of frame in the cam 5 that spins, and is directed in the end pin of tube-like base B1 inboard through the inside of base body B.Needlework of the above-mentioned end when outstanding, promptly can strain at because of pushing away on this cam 5 that spins on drawing lines plate 53 when the cam 5 that spins, and will become slack when drawing lines plate 53 submerges when the cam 5 that spins, and the action according to end pin increases and decreases tension force thus, supplies with end needlework.
In the Sewing machines with cut-off knife of the present invention, the cut-off knife axle 42 of above-mentioned movable cut-off knife 43 utilizes the camshaft 50 of the cam 5 that spins of above-mentioned action as power transmission shaft, and rotates repeatedly in foregoing set angular range and be bonded.
Fig. 5 is an expression cut-off knife axle 42 and the expansion oblique view of the pith of the connection relationship of camshaft 50.In this figure,, omitted at the leading section of camshaft 50 chimeric spin cam 5 and the diagram that the drawing lines plate 53 that this cam 5 that spins haunts is arranged in order understand to show connecting portion.
As shown in the figure, from the transmission device that carries out transmission to the cut-off knife axle 42 of movable cut-off knife 43 as the camshaft 50 of power transmission shaft, include: the chimeric eccentric hoop 54 that is supported on the pars intermedia of camshaft 50, and the drive link 48 that is embedded in the counterpart bottom of cut-off knife axle 42, more specifically, be to be connected with front end and to constitute at this eccentric hoop 54 outstanding arms 55 that are provided with.
Herein, in the Sewing machines with cut-off knife of the present invention, transmission for movable cut-off knife 43, be to finish via extending the camshaft 50 and the cut-off knife axle 42 that are provided with along the front of base body B, because above-mentioned axle 50,42 are positioned at the outside of base body B, so can freely select the size that comprises diameter.Therefore, not can because of produce be applied to by cut-out movable cut-off knife 43 big load caused causes obstruction to cutting off action.The outstanding interior feed gear wheel of tube-like base B1 that is arranged at the front of base body B can utilize the transmission that comes from special-purpose power transmission shaft to make its action, also can not cause obstruction to feed motion, and also can carry out stable edging sewing under high speed.
In addition, in above embodiment, can be that the power transmission shaft of cut-off knife axle 43 uses with being used for to power transmission shaft 50 double as that the cam 5 that spins that is disposed at base body B outside carries out transmission, therefore do not need the power transmission shaft of movable cut-off knife 43 special uses, simplifying the structure.In addition, for the configuration of the cam 5 that spins of base body B outside, for the setting that makes the end needlework of being derived by line adjuster 6 is easier to and for the purpose of subsequent operation when end needlework in making action cut off is easier to, so employing mode in the past disposes.
Again, as shown in Figure 5, being connected of the arm 55 of drive link 48 and eccentric hoop 54 is to extend the slotted hole 49 that is provided with via the long axis direction at this drive link 48 to constitute, and in the length range of this slotted hole 49 variable coupling position.By above-mentioned structure, just can be in the length range of above-mentioned slotted hole 49, change the waving angle of the drive link that round action produced 48 of arm 55 front ends that are accompanied by eccentric hoop 54, so can make the above-mentioned stroke of passing on via cut-off knife axle 42 that shakes the knee-action of the movable cut-off knife 43 that is produced, can be corresponding for example adjust, often to obtain the excellent cutting state as the kind of the cloth W of object.
Fig. 6 is the outward appearance oblique view of other embodiment of the Sewing machines with cut-off knife of the present invention.In the present embodiment, the outstanding camshaft 50 that is provided with of one side at the needle downing position of the C of foot of contiguous sewing machine arm A, the cam 5 that spins is installed on camshaft 50, and make the eccentric hoop 54 chimeric extended ends that are supported on above-mentioned camshaft 50, and the front end of the arm 55 that will extend from these eccentric hoop 54 past the place aheads, be connected the rotation of corresponding camshaft 50 and cut-off knife axle 42 is rotated repeatedly with the front end that above the drive link 48 that is embedded in the cut-off knife axle 42 that sets up in the front of base body B, extends.Above-mentioned camshaft 50 runs through perisporium and extends to the inside of the C of foot, and above-mentioned extended end is connected in the machine spindle of base body B inside by timing belt, again the rotation of corresponding machine spindle and to a direction rotation.In addition, in the present embodiment, because other constitutional details are all identical with the embodiment shown in the 1st figure, so reference symbol and detailed description omission that will be common with the 1st figure.
Again, in Fig. 6, above-mentioned eccentric hoop 54 is positioned at the outer fix of the cam 5 that spins, and be positioned at the part in the front of this cam 5 that spins, and spin cam 5 and eccentric hoop 54 be the chimeric camshaft of giving prominence to from the C of foot 50 that is supported on from the outside, also can be as shown in fig. 1, make the front of the cam 5 that spins be open and dispose.When as above disposing, for the setting of the end needlework of the cam 5 that spins and the subsequent treatment of the end needlework that cut off in making will become and be easy to.
In the sewing machine with cut-off knife of aforesaid the 1st invention of the present invention, because will Along the cut-off knife axle that set up in the anterior outside of the base body that has tube-like base in a side, warp Be linked to the protuberance of the power transmission shaft in the base body outside by transmission device, and with the sewing machine master The rotation of axle reaches the cut-off knife axle via power transmission shaft, so that in the front position that extends to tube-like base The movable cut-off knife that install the end of the above-mentioned cut-off knife axle that arranges is haunted the front portion of needle downing position, Therefore, do not need to utilize the power transmission shaft of the tube-like base inside of thin bore, can make movable cut-off knife Action, and the cut-out having stable behavior of the movable cut-off knife that is applied with big load is carried out, in addition, also Can not cause obstruction to the feed motion of the feed gear wheel of tube-like base inside, so can be at a high speed Carry out down stable ruffle sewing.
In addition, in the sewing machine with cut-off knife of the 2nd invention, owing to be disposed at base originally The power transmission shaft of the cam that spins of external body doubles as to being used for the power transmission shaft of transmission cut-off knife axle, thereby not New special-purpose power transmission shaft need to be set, so it is moving to carry out stable cut-out by simple structure Do.
Further, in the sewing machine with cut-off knife of the 3rd invention, from power transmission shaft to cut-off knife Driven off by shaft transmission device is by being supported on the former eccentric hoop and being embedded in the latter chimeric Drive link linked and consisted of, and the coupling position of eccentric hoop and drive link can be passed at this Change on the long axis direction of lever, produce so can regulate simply from the transmission of power transmission shaft The repeatedly rotation amount of the cut-off knife axle of giving birth to, and the movable cut-off knife that produced by above-mentioned repeatedly rotation The action stroke no matter therefore which kind of the kind of cloth all can positively be cut off for, and is brought into play Excellent effect of the present invention.
Claims (3)
1. Sewing machines with cut-off knife, comprising: a cylindrical base in a side-prominent setting of the base body that is built-in with machine spindle, and is set with needle downing position at an upper portion thereof; The cut-off knife axle sets up along the anterior outside of above-mentioned base body and cylindrical base, rotates repeatedly in the angular range of regulation by the transmission from above-mentioned machine spindle; Movable cut-off knife is installed on an end of above-mentioned cut-off knife axle, and to should rotating repeatedly of cut-off knife axle and haunt the front portion of above-mentioned needle downing position; And fixing cut-off knife, breakking away with one of this movable cut-off knife is dynamically connected, and the edge that will send into the cloth of above-mentioned needle downing position cuts off, and it is characterized in that, also comprises:
Power transmission shaft, its at least a portion is given prominence to configuration in the outside of above-mentioned base body, and sways by the transmission from above-mentioned machine spindle;
Transmission device is linked to the protuberance of above-mentioned power transmission shaft with the other end of this cut-off knife axle, and to rotation that should power transmission shaft and above-mentioned cut-off knife axle is rotated repeatedly.
2. the Sewing machines with cut-off knife as claimed in claim 1, wherein above-mentioned power transmission shaft double as are the power transmission shaft that is configured in the cam that spins of above-mentioned base body exterior.
3. the Sewing machines with cut-off knife as claimed in claim 1 or 2, wherein above-mentioned transmission device also comprises:
One eccentric hoop, a chimeric part that is supported on above-mentioned power transmission shaft;
One drive link, an end is embedded in above-mentioned cut-off knife axle, and the other end then is linked to above-mentioned eccentric hoop;
One change device changes the bond sites of this drive link and the above-mentioned eccentric hoop longitudinal direction at drive link.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP158950/2000 | 2000-05-29 | ||
| JP2000158950A JP3909453B2 (en) | 2000-05-29 | 2000-05-29 | Sewing machine with a knife |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1326026A CN1326026A (en) | 2001-12-12 |
| CN1179076C true CN1179076C (en) | 2004-12-08 |
Family
ID=18663347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011157275A Expired - Fee Related CN1179076C (en) | 2000-05-29 | 2001-05-23 | Sewing machine with cutter |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP3909453B2 (en) |
| CN (1) | CN1179076C (en) |
| IT (1) | ITMI20011117A1 (en) |
| TW (1) | TW522190B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100348795C (en) * | 2004-08-04 | 2007-11-14 | 张梅珍 | Sewing-up side-cutting sewing machine |
| JP4769543B2 (en) * | 2005-10-28 | 2011-09-07 | Ｊｕｋｉ株式会社 | Cloth cutting knife device for sewing machine |
| JP2010119818A (en) * | 2008-11-20 | 2010-06-03 | Yamato Sewing Mach Co Ltd | Cloth cutting apparatus of sewing machine |
| KR101250285B1 (en) * | 2010-12-31 | 2013-04-09 | 주식회사 썬스타 | Method for controlling heating element of sewing machine |
| CN104005187B (en) * | 2014-05-27 | 2016-03-30 | 杰克缝纫机股份有限公司 | A kind ofly novel cut cloth mechanism |
| CN105506872B (en) * | 2015-12-22 | 2017-10-17 | 强信机械科技(莱州)有限公司 | Compound money overedger computer cutting facility knife group |
-
2000
- 2000-05-29 JP JP2000158950A patent/JP3909453B2/en not_active Expired - Fee Related
-
2001
- 2001-05-04 TW TW90110720A patent/TW522190B/en not_active IP Right Cessation
- 2001-05-23 CN CNB011157275A patent/CN1179076C/en not_active Expired - Fee Related
- 2001-05-25 IT IT2001MI001117A patent/ITMI20011117A1/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| JP3909453B2 (en) | 2007-04-25 |
| ITMI20011117A0 (en) | 2001-05-25 |
| TW522190B (en) | 2003-03-01 |
| CN1326026A (en) | 2001-12-12 |
| ITMI20011117A1 (en) | 2002-11-25 |
| JP2001334089A (en) | 2001-12-04 |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20041208 Termination date: 20200523 |
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| CF01 | Termination of patent right due to non-payment of annual fee |