CN203807737U - Sewing machine - Google Patents
Sewing machine Download PDFInfo
- Publication number
- CN203807737U CN203807737U CN201420141760.XU CN201420141760U CN203807737U CN 203807737 U CN203807737 U CN 203807737U CN 201420141760 U CN201420141760 U CN 201420141760U CN 203807737 U CN203807737 U CN 203807737U
- Authority
- CN
- China
- Prior art keywords
- mentioned
- shaft
- arm
- sewing machines
- engaging
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000009958 sewing Methods 0.000 title claims abstract description 106
- 230000001105 regulatory effect Effects 0.000 claims description 63
- 230000002093 peripheral effect Effects 0.000 claims description 34
- 230000007246 mechanism Effects 0.000 claims description 30
- 239000004744 fabric Substances 0.000 claims description 10
- 230000002401 inhibitory effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 13
- 230000004044 response Effects 0.000 description 10
- 230000000694 effects Effects 0.000 description 7
- 230000003321 amplification Effects 0.000 description 5
- 238000013459 approach Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 5
- 238000003199 nucleic acid amplification method Methods 0.000 description 5
- 230000005484 gravity Effects 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 230000001050 lubricating effect Effects 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Abstract
The utility model relates to a sewing machine which is capable of inhibiting string vibration generated on a double-sided toothed belt. The double-sided toothed belt is arranged on an upper shaft belt wheel, a lower shaft belt wheel, a shuttle shaft belt wheel and a tension wheel in a tensioned manner; a fulcrum shaft part supports the tension wheel in a manner that the tension wheel is capable of rotating; the fulcrum shaft part is connected with an eccentric shaft which is capable of rotating; the fulcrum shaft part is derived from the axis of the eccentric shaft, and is capable of rotating by taking the axis of the eccentric shaft as the center; a torsional spring arranged on the eccentric shaft applies torque on the tension wheel, wherein the torque enables the tension wheel to swing in a direction away from the lower shaft belt wheel and the shuttle shaft belt wheel; when the double-sided toothed belt moves, string vibration is generated, the tension wheel conquers the torque applied by the torsional spring to swing in a direction approaching the lower shaft belt wheel and the shuttle shaft belt wheel. The tension of the double-sided toothed belt is reduced, and the string vibration attenuates and completes.
Description
Technical field
The utility model relates to a kind of Sewing machines that makes upper axle, lower shaft and shuttle axle interlock by belt.
Background technology
Sewing machines has horn portion, upper axle, support portion, lower shaft and shuttle axle.Horn portion inner horizontal support axle.Support portion is positioned at the below of horn portion.Support portion inner approximate horizontal support lower shaft and shuttle axle.Upper axle drives thread take-up tension lever and shank.Lower shaft drives the cloth feeding mechanism for delivery of sewn object.Shuttle axle drives the rotating shuttle having for the spur of capture surface wire loop.Sewing machines, in order to make in phase action, need to make the synchronous interlock of this three axle of axle, lower shaft and shuttle axle.For example, the Sewing machines that 2000 No. 245984 communiques of Japanese Unexamined Patent Publication are recorded is respectively equipped with sprocket wheel on upper axle and shuttle axle, is provided with two with respect to sprocket wheel tightener sprocket independently in support portion inside.Two-sided toothed belt is opened and is located at the sprocket wheel of tightener sprocket, upper axle and the sprocket wheel of shuttle axle.Upper axle and shuttle axle link up with belt.Upper axle and the rotation synchronized with each other of shuttle axle.
The resonant frequency of belt depends on the length of the part not contacting with sprocket wheel in the quality, belt of belt and acts on tension force of belt etc.When the sewing speed of above-mentioned Sewing machines changes, the frequency of the vibration of the rotating speed based on upper axle or shuttle axle equates with resonant frequency sometimes.Therefore, can there is string vibration in certain part not contacting with sprocket wheel and tightener sprocket in belt, and produce string chatter.
Utility model content
The purpose of this utility model is, a kind of Sewing machines that can be suppressed at the string chatter of double cog belt generation is provided.
The Sewing machines of technical scheme 1 comprises: upper axle, and it is flatly located in horn portion, is connected with making the up-down mechanism that shank moves up and down, lower shaft, itself and above-mentioned upper axle are located at the support portion that is positioned at above-mentioned horn subordinate side abreast, are connected with the cloth feeding mechanism at above-mentioned lower parts of needle conveying sewn object, shuttle axle, itself and above-mentioned lower shaft are located in above-mentioned support portion abreast, are connected with rotating shuttle, lower shaft pulley, it is located at above-mentioned lower shaft, under the driving of motor of sewing machine, together rotates with above-mentioned lower shaft, upper shaft pulley, it is located at above-mentioned upper axle, together rotates with above-mentioned upper axle, shuttle shaft pulley, it is located at above-mentioned shuttle axle, together rotates with above-mentioned shuttle axle, and double cog belt, it has internal tooth and external tooth, and so that the peripheral part of above-mentioned internal tooth and above-mentioned lower shaft pulley and the engagement of the peripheral part of above-mentioned upper shaft pulley, the mode of the peripheral part engagement of aforementioned external teeth and above-mentioned shuttle shaft pulley is opened and be located at above-mentioned lower shaft pulley, above-mentioned upper shaft pulley and above-mentioned shuttle shaft pulley, this Sewing machines is characterised in that, it comprises: regulating wheel, itself and above-mentioned lower shaft pulley, above-mentioned shuttle shaft pulley is located in above-mentioned support portion abreast, internal tooth with its peripheral part and above-mentioned double cog belt between above-mentioned lower shaft pulley in the configuration path of above-mentioned double cog belt and above-mentioned shuttle shaft pulley meshes, prop up axial region, its mode that can rotate with above-mentioned regulating wheel supports above-mentioned regulating wheel, eccentric shaft, it is with respect to above-mentioned axial region bias, and is connected with above-mentioned axial region by connecting portion, in the mode that can rotate, is supported in above-mentioned support portion, and torsion spring, it applies the torque that above-mentioned regulating wheel is swung towards the direction of leaving above-mentioned lower shaft pulley and above-mentioned shuttle shaft pulley to above-mentioned eccentric shaft.
The rotating speed of the output shaft of motor of sewing machine changes, and sometimes makes the frequency of the vibration of the rotating speed based on upper axle, lower shaft or shuttle axle equate with the resonant frequency of double cog belt.Therefore, in double cog belt not with lower shaft pulley, on certain part of contacting of the peripheral part of shaft pulley, shuttle shaft pulley and regulating wheel can produce string vibration.The regulating wheel that double cog belt is applied to tension force overcomes the torque that puts on eccentric shaft, will produce string and vibrate that side oscillation in double cog belt.The tension force that puts on double cog belt reduces, and the resonant frequency of double cog belt is reduced.Resonant frequency becomes the value different from the frequency of the vibration of rotating speed based on upper axle, lower shaft or shuttle axle.Therefore, string vibration decays immediately and finishes after just producing.Therefore, Sewing machines can be suppressed at the string chatter producing on double cog belt.Regulating wheel returns to original position immediately under the torque at torsion spring after string vibration finishes, thereby can tackle ensuing string vibration.Therefore, Sewing machines can make for the response of the generation of string vibration good.
In the Sewing machines of technical scheme 2, the torque that above-mentioned torque and above-mentioned double cog belt result from above-mentioned eccentric shaft while moving on the above-mentioned peripheral part of above-mentioned regulating wheel is towards same direction.When double cog belt moves on the peripheral part of regulating wheel, eccentric shaft is applied to torque.By the effect of torsion spring, resulted from the torque of eccentric shaft and above-mentioned torque towards same direction.Even if follow the movement of double cog belt, at eccentric shaft, produce torque, the eccentric shaft that double cog belt is applied to tension force from inner side is also difficult for towards the direction rotation that approaches lower shaft pulley and shuttle shaft pulley.Even if double cog belt moves, regulating wheel is also difficult for swinging to the direction of going towards the inner side of double cog belt.Therefore it is stable that, Sewing machines can make the movement of double cog belt.
The Sewing machines of technical scheme 3 comprises: support, and it is fixed in above-mentioned support portion, and the mode that can rotate with above-mentioned eccentric shaft supports above-mentioned eccentric shaft; And bearing portion, it is located between above-mentioned support and above-mentioned eccentric shaft in above-mentioned support.Bearing portion can easily make eccentric shaft rotation.When having produced string vibration, eccentric shaft easily makes regulating wheel vibrate that side oscillation towards producing string.Therefore, Sewing machines can improve the fast-response for the generation of string vibration.After string vibration finishes, under the effect of the torque that eccentric shaft applies at torsion spring, easily make regulating wheel return to original position.The fast-response that when therefore, Sewing machines can improve string vibration end, regulating wheel returns to original position.Therefore, Sewing machines can make for the response of the generation of string vibration good.
In the Sewing machines of technical scheme 4～6, above-mentioned torsion spring comprises: the first arm, and it is from distolateral extending out of winder; And second arm, it is from another distolateral extending out of above-mentioned winder; Above-mentioned the first arm engaging any one first engaging portion in a plurality of the first engaging portions of being located at above-mentioned eccentric shaft; Second engaging portion of above-mentioned the second arm engaging in being located at above-mentioned support portion.The first engaging portion has a plurality of, and therefore, operator can adjust angulation between the arm of the torsion spring that is installed on Sewing machines.Therefore,, even when being installed on the spring constant of the torsion spring of Sewing machines having individual difference in manufacturing process, it is stable that Sewing machines also can make torsion spring put on the torque of eccentric shaft.
In the Sewing machines of technical scheme 7～9, above-mentioned the first arm is than above-mentioned the second brachium.Operator by the second arm engaging under the state of the second engaging portion, easy any one first engaging portion in a plurality of the first engaging portions by the first arm engaging of Length Ratio the second brachium.Therefore, Sewing machines can improve the assembleability of torsion spring.
In the Sewing machines of technical scheme 10, above-mentioned eccentric shaft is inserted into the inner side of the above-mentioned winder of above-mentioned torsion spring; At above-mentioned eccentric shaft, be provided with supporting member, above-mentioned supporting member is supported on above-mentioned a plurality of the first engaging portions on the circumference of the imaginary circle centered by the axis of above-mentioned eccentric shaft.When eccentric shaft rotates, a first distolateral arm of torsion spring rotates centered by the axis of eccentric shaft.Torsion spring puts on the torque of eccentric shaft and the rotation amount of eccentric shaft is directly proportional.That is the torque that, puts on eccentric shaft can be according to the rotation amount of eccentric shaft and rapid increasing die-offed.Therefore, Sewing machines can respond string chatter more swimmingly.Be located at a plurality of first engaging portions of supporting members supports of the eccentric shaft that can rotate, therefore, easily change the engaging position of distolateral first arm.Therefore, Sewing machines can further improve the assembleability of torsion spring.
The Sewing machines of technical scheme 11 also comprises: tabular component, and it is fixed in above-mentioned support portion, the through hole that has above-mentioned the second engaging portion and insert for above-mentioned eccentric shaft; And fixture structural unit, it is located at the peripheral part of above-mentioned eccentric shaft, and engaging is in the circumference of above-mentioned through hole; Above-mentioned supporting member is tabular, is positioned at the end of that side contrary with above-mentioned axial region of above-mentioned eccentric shaft; Above-mentioned fixture structural unit from that side engaging contrary with above-mentioned supporting member of above-mentioned tabular component in the circumference of above-mentioned through hole; Above-mentioned torsion spring with the state configuration compressed on axis direction between above-mentioned supporting member and above-mentioned tabular component.Winder is towards the direction of going toward supporting member from tabular component to the eccentric shaft application of force, and restriction eccentric shaft moves towards the direction of going toward tabular component from supporting member.Fixture structural unit and tabular component butt, restriction eccentric shaft moves towards the direction of going toward supporting member from tabular component.Therefore, Sewing machines has limited the regulating wheel that axial region supports and has moved on axis direction.The peripheral part of regulating wheel is difficult for moving on axis direction with respect to double cog belt.Therefore, Sewing machines can more stably suppress string chatter.
In the Sewing machines of technical scheme 12, above-mentioned motor of sewing machine is disposed in above-mentioned support portion, has the output shaft linking with above-mentioned lower shaft one.The motor of sewing machine that has weight and become vibration source is disposed in support portion.Sewing machines can make whole center of gravity reduce, so the vibration in the time of can reducing to make.
Accompanying drawing explanation
Fig. 1 is the stereogram of Sewing machines 1.
Fig. 2 is the longitudinal section of Sewing machines 1.
Fig. 3 is the in-built stereogram of Sewing machines 1.
Fig. 4 is near the amplification stereogram of part tension adjustment mechanism 70.
Fig. 5 is near the exploded perspective view of part tension adjustment mechanism 70.
Fig. 6 is the amplification view of tension adjustment mechanism 70.
Fig. 7 is near the amplification right view of part tension adjustment mechanism 70.
Fig. 8 is near amplification right view partly tension adjustment mechanism 70 when strings vibration occurs for double cog belt 25.
Fig. 9 is the amplification stereogram of the supporting member 78 of variation.
The specific embodiment
Below, with reference to the accompanying drawings of embodiment of the present utility model.In the following description, use the top to bottom, left and right, front and rear shown in arrow in figure.
The structure of Sewing machines 1 is described with reference to Fig. 1.Sewing machines 1 has frame 2.Frame 2 has support portion 3, column sections 4 and horn portion 5.Support portion 3 is installed on the workbench opening 101 of workbench 100.Support portion 3 extends along left and right directions, and its upper surface is plane.Support portion 3 has cloth feeding mechanism 11 in upper surface left side.Cloth feeding mechanism 11 is for delivery of sewn object (omitting diagram).Column sections 4 is extended towards top from the right-hand member of support portion 3.Horn portion 5 extends towards left from the upper end of column sections 4, and relative with the upper surface of support portion 3.Horn portion 5 has shank 7 in left part.Shank 7 is provided with eedle 8 in lower end.Shank 7 is positioned at the top of cloth feeding mechanism 11, at motor of sewing machine 24(with reference to Fig. 2) driving under move back and forth up and down.Horn portion 5 has thread take-up tension lever 9 in front portion, left part.Thread take-up tension lever 9 is side-prominent outwardly from the inside of horn portion 5.Thread take-up tension lever 9 is followed moving up and down of shank 7 and is moved up and down.Column sections 4 has operating portion 10 at front surface.Operator indicates to Sewing machines 1 input operation with operating portion 10.Column sections 4 is provided with pulley cover 35 at right flank.Pulley cover 35 is extended along the vertical direction, covers the right flank of support portion 3 from the right flank of column sections 4 always.Pulley cover 35 has circular peristome 51 on right flank top.Belt wheel 50 is given prominence to towards right-hand from peristome 51.Pulley cover 35 disposes power switch 6 in front surface bottom.Workbench opening 101 has opening 102 and lid opening 103 for support.Support has the shape corresponding with the peripheral shape of support portion 3 with opening 102.Lid is located at opening 102 right side that this support is used opening 102 with opening 103 and support continuously.Lid has the shape corresponding with the peripheral shape of pulley cover 35 downsides with opening 103.Support portion 3 is located at the inner side that support is used opening 102.Lid is avoided disturbing with pulley cover 35 with opening 103.
The internal structure of Sewing machines 1 is described with reference to Fig. 2, Fig. 3.Sewing machines 1 is axle 21, lower shaft 22, shuttle axle 23, motor of sewing machine 24 and double cog belt 25 on inside has.Upper axle 21 horn portion 5 interior approximate horizontal along left and right directions, extend.The right part of upper axle 21 is linked to belt shaft 40 by joint 15 in the mode that can load and unload.Belt shaft 40 by retainer 60(with reference to Fig. 2) be fixed on belt wheel 50.Upper shaft pulley 31 is fixed on the joint 15 of being located at axle 21 right parts.Lower shaft 22 arranges with upper axle 21 abreast in the inside of support portion 3.Lower shaft pulley 32 is fixed on the right part of lower shaft 22.Shuttle axle 23 is arranged on abreast the top, front side of lower shaft 22 with lower shaft 22 and is the position in the inside of support portion 3.Shuttle shaft pulley 33 is fixed on the right part of shuttle axle 23.Rotating shuttle 13 is located at the left part of shuttle axle 23.Motor of sewing machine 24 is located at the right-hand of lower shaft 22.The output shaft 26 of motor of sewing machine 24 links integratedly with the right part of lower shaft 22.Double cog belt 25 is to have concavo-convex internal tooth (omit diagram) and at outer peripheral face, have the belt body of the ring-type of concavo-convex external tooth (omitting diagram) at inner peripheral surface.The peripheral part engagement of the peripheral part of the internal tooth of double cog belt 25 and lower shaft pulley 32 and upper shaft pulley 31, the peripheral part engagement of the external tooth of double cog belt 25 and shuttle shaft pulley 33.25 of double cog belts are located at lower shaft pulley 32, upper shaft pulley 31 and shuttle shaft pulley 33.
As shown in Figure 3, Figure 4, Sewing machines 1 is provided with tension adjustment mechanism 70 and regulating wheel 34 in the place ahead of shuttle shaft pulley 33.In Fig. 3, omitted the part except support 72 of tension adjustment mechanism 70.Tension adjustment mechanism 70 is for adjusting the tension force of double cog belt 25.Tension adjustment mechanism 70 with regulating wheel 34(with reference to Fig. 3) mode that can rotate supports this regulating wheel 34.The lower shaft pulley 32 of regulating wheel 34 in the configuration path of double cog belt 25 and the position between shuttle shaft pulley 33.Regulating wheel 34 can swing with respect to lower shaft pulley 32 and shuttle shaft pulley 33 under the effect of tension adjustment mechanism 70.Sewing machines 1 utilizes tension adjustment mechanism 70 that regulating wheel 34 is swung.Therefore, Sewing machines 1 is without arranging in addition tension adjustment mechanism 70 on the configuration path at double cog belt 25, therefore, and can simplified structure.The internal tooth engagement of the peripheral part of regulating wheel 34 and double cog belt 25.The left part of lower shaft 22 and cloth feeding mechanism 11 are connected.The left part of upper axle 21 is connected with upper and lower driving mechanism 14.Upper and lower driving mechanism 14 moves up and down shank 7 and eedle 8.
With reference to Fig. 4～Fig. 7, tension adjustment mechanism 70 is described.As shown in Figure 4, Figure 5, tension adjustment mechanism 70 has axial region 71, support 72, tabular component 73, fixture structural unit 75, fixed component 76, torsion spring 77, supporting member 78 and bolt component 79.Axial region 71 has axial region 71A, connecting portion 71B and an eccentric part 71C.Prop up axial region 71A and extend along left and right directions, the mode that can rotate with regulating wheel 34 supports this regulating wheel 34.Connecting portion 71B is discoideus member roughly.The right surface of connecting portion 71B is connected with the left part of an axial region 71A.Eccentric part 71C extends along left and right directions.The right part of eccentric part 71C is connected with the left surface of connecting portion 71B.Eccentric part 71C has axis hole 71D(with reference to Fig. 6 at the place, axle center of left part).The 79B of bar portion of bolt component 79 is inserted in axis hole 71D and is anchored on axis hole 71D.Eccentric part 71C has notch part 71E in the part of left part outer peripheral face.Notch part 71E is cut to and the left part of eccentric part 71C can be embedded in to the recess 76B of fixed component 76.The left part of eccentric part 71C is in the right-hand through hole 73C that is inserted into tabular component 73, and outstanding to the left of erectting setting unit 73B.The axis of eccentric part 71C departs from the axis (with reference to Fig. 6) of an axial region 71A towards below.Eccentric part 71C is eccentric with respect to an axial region 71A.Support 72 is the cylindrical structural members that extend along left and right directions.The axis of support 72 is roughly consistent with the axis of eccentric part 71C.Support 72 is fixed on the 3(of support portion with reference to Fig. 1) inside, eccentric part 71C is inserted into the inner side of support 72.As shown in Figure 6, the left surface butt of the right part of support 72 and connecting portion 71B.Support 72 has along the recess 72B(circumferentially caving in reference to Fig. 5 at left part outer peripheral face).Back-up ring 75B(is with reference to Fig. 6) be nested in recess 72B.Support 72 is fixed with respectively bearing portion 72A(with reference to Fig. 6 at both ends, inner side).That is the mode that, support 72 can rotate with eccentric part 71C by bearing portion 72A supports this eccentric part 71C.Bearing portion 72A is for example ball bearing cylindraceous, between outer wall (omitting diagram) and inwall (omitting diagram), is provided with a plurality of balls (omitting diagram), and is coated with lubricating grease (omitting diagram).The peripheral part of the inwall supporting eccentric part 71C of bearing portion 72A.When eccentric part 71C rotates, the inwall of bearing portion 72A and ball rotation.Therefore, eccentric part 71C can make regulating wheel 34 that an axial region 71A supports with respect to lower shaft pulley 32(with reference to Fig. 3) and shuttle shaft pulley 33(with reference to Fig. 3) swing swimmingly.Bearing portion 72A can be also roller bearing, sliding bearing etc.
As shown in Figure 5, tabular component 73 has bottom 73A and erects setting unit 73B.Bottom 73A overlooks to be tabular at the longer essentially rectangular of fore-and-aft direction, is fixed on the 3(of support portion with reference to Fig. 1) inside.Erect setting unit 73B and be tabular at the longer essentially rectangular of above-below direction when observing from right side, from the left part of bottom 73A, towards top, erect setting.Erect setting unit 73B and there is through hole 73C and engaging portion 73D.Through hole 73C connects along left and right directions the circular port of erectting setting unit 73B top.The left part of eccentric part 71C is inserted in through hole 73C.Engaging portion 73D is located at the position that is in through hole 73C the place ahead upside in the circumference of erectting setting unit 73B.Engaging portion 73D has the first 73E of wall portion and the second 73F of wall portion.The first 73E of wall portion and the second 73F of wall portion extend towards left from the circumference of erectting setting unit 73B.The first 73E of wall portion is positioned at the top of the second 73F of wall portion.The second arm 77C of torsion spring 77 by being inserted between the first 73E of wall portion and the second 73F of wall portion and engaging in engaging portion 73D.
Fixture structural unit 75 has abutting part 75A and back-up ring 75B.Abutting part 75A and back-up ring 75B(are with reference to Fig. 6) be circular member, the diameter of back-up ring 75B is less than the diameter of abutting part 75A.Back-up ring 75B is omitted in Fig. 5.Support 72 is inserted into the inner side of fixture structural unit 75.Abutting part 75A is fixed on the peripheral part left end of support 72.Abutting part 75A is from the right-hand circumference that is connected to through hole 73C of erectting setting unit 73B.Back-up ring 75B is connected to the right surface of abutting part 75A, and is nested in the recess 72B of support 72.Therefore, fixture structural unit 75 restriction supports 72 move towards left, thereby restriction eccentric part 71C, an axial region 71A move towards left.Therefore, tension adjustment mechanism 70 can limit regulating wheel 34 and moves towards left.Fixed component 76 is extend and by the cylindrical element that has cut away outer peripheral face part, be positioned at the left side (with reference to Fig. 6) of tabular component 73 along left and right directions.The axis of fixed component 76 is roughly consistent with the axis of eccentric part 71C.Fixed component 76 is from the winder 77A of medial branch bearing torque spring 77.Fixed component 76 has the circular through hole 76A extending along left and right directions.The 79B of bar portion is inserted in through hole 76A.The right part of fixed component 76 has towards the recess 76B of left depression.Recess 76B is nested in the notch part 71E of eccentric part 71C left part.The left part of fixed component 76 has recess (omitting diagram), to hold the setting setting unit 78B of supporting member 78.Torsion spring 77 is located at the left side of erectting setting unit 73B.Torsion spring 77 has winder 77A, the first arm 77B and the second arm 77C.Winder 77A forms helical form centered by the axis extending along left and right directions.Fixed component 76 is inserted into the inner side of winder 77A.The first arm 77B is from extending towards below in one end of winder 77A left end side.The first arm 77B engaging is in the engaging portion 78C of supporting member 78.The second arm 77C extends towards oblique the place ahead from the other end in winder 77A right-hand member side.The second arm 77C by being inserted between the first 73E of wall portion and the second 73F of wall portion and engaging in engaging portion 73D.The first arm 77B is longer than the second arm 77C.Supporting member 78 is located at the left of torsion spring 77, has plectane portion 781 and protuberance 782.Plectane portion 781 is rounded tabular while observing from right side.Protuberance 782 be the part of justifying board 781 outer peripheral edges by oneself towards radial outside, extend fan-shaped tabular.Supporting member 78 has through hole 78A, erects setting unit 78B and four engaging portion 78C.Through hole 78A is the circular port of being located at plectane Bu781 center.The axis of through hole 78A is roughly consistent with the axis of eccentric part 71C.The 79B of bar portion is inserted in through hole 78A.Erect setting unit 78B and be a pair of wall portion of the both sides, front and back of being located at through hole 78A, from the right flank of supporting member 78 towards right-hand outstanding.Setting setting unit 78B is contained in the recess (omitting diagram) of fixed component 76 left parts.On the circumference of the imaginary circle centered by through hole 78A of engaging portion 78C in protuberance 782, be provided with four.That is, engaging portion 78C is positioned on the circumference of the imaginary circle centered by the axis of eccentric part 71C.Four engaging portion 78C are formed at the downside of through hole 78A.Engaging portion 78C from the right flank of supporting member 78 towards right-hand extension.Operator is any one the engaging portion 78C in four engaging portion 78C by the first arm 77B engaging.The quantity of engaging portion 78C can be made as a plurality of, such as six etc.
Bolt component 79 has head 79A and the 79B of bar portion.Head 79A is connected to the left surface of supporting member 78.The 79B of bar portion extends along left and right directions on the right side of head 79A.The axis of the 79B of bar portion is roughly consistent with the axis of eccentric part 71C.The 79B of bar portion is inserted in through hole 78A and through hole 76A and is anchored on axis hole 71D from left.Bolt component 79 makes eccentric part 71C, fixed component 76 and supporting member 78 integrated.
As shown in Figure 6, by bolt component 79 is anchored on to axis hole 71D, supporting member 78 is from left side pushing winder 77A.Winder 77A is sandwiched in supporting member 78 and erects between setting unit 73B and compressed.Winder 77A towards left to supporting member 78 application of forces, and by bolt component 79 towards left to the eccentric part 71C application of force.Under the effect of the active force towards left that connecting portion 71B is subject at eccentric part 71C, be connected to the right part of support 72.Fixture structural unit 75 restriction supports 72 move towards left, thereby restriction eccentric part 71C, an axial region 71A move towards left.Therefore, supporting member 78 and eccentric part 71C can locate at the abutting part 75A of fixture structural unit 75 on the position of the right-hand circumference that is connected to through hole 73C of erectting setting unit 73B.Winder 77A to supporting member 78 and the eccentric part 71C application of force, limits them towards right-hand movement towards left.Therefore, Sewing machines 1 can limit regulating wheel 34 that an axial region 71A supports towards right-hand movement.
With reference to Fig. 7, illustrate that torsion spring 77 puts on the torque of regulating wheel 34.The first arm 77B engaging any one engaging portion 78C in four engaging portion 78C.The second arm 77C engaging is all the time in engaging portion 73D.No matter that the first arm 77B engaging is upper in which engaging portion 78C, all before little than the first arm 77B being installed on to engaging portion 78C to the clockwise angle when observing from right side the second arm 77C from the first arm 77B.That is, the first arm 77B applies by through hole 78A(with reference to Fig. 5 supporting member 78) axis centered by anticlockwise torque when observing from right side.Therefore the torque that, torsion spring 77 puts on supporting member 78 via fixed component 76, eccentric part 71C(with reference to Fig. 5) and an axial region 71A be delivered to regulating wheel 34.Therefore, torsion spring 77 applies all the time and makes regulating wheel 34 torque that the counter clockwise direction when observing from right side (arrow A direction) swings centered by the axis of eccentric part 71C.Because the axis of eccentric part 71C departs from the axis of an axial region 71A towards below, therefore, regulating wheel 34 swings to the direction of leaving lower shaft pulley 32 and shuttle shaft pulley 33.Therefore, 34 pairs of double cog belts 25 of regulating wheel apply tension force.Operator can be by by the first arm 77B engaging, any one the engaging portion 78C in four engaging portion 78C adjusts the first arm 77B and the second arm 77C angulation.Therefore, Sewing machines 1, in the situation that the spring constant of torsion spring 77 exists individual difference, also can apply stable torque to regulating wheel 34.The second arm 77C engaging is all the time in engaging portion 73D, and the first arm 77B is any one the engaging portion 78C in four engaging portion 78C by operator's engaging.The first arm 77B is longer than the second arm 77C.Therefore, when operator adjusts the first arm 77B and the second arm 77C angulation, the first arm 77B engaging that length is grown is in engaging portion 78C, so easily operation.Operator also can easily change catch positions and to other engaging portions 78C engaging.Therefore, Sewing machines 1 can improve the assembleability of torsion spring 77.
The overview of the work of Sewing machines 1 is described with reference to Fig. 3.Lower shaft pulley 32 is followed the driving of motor of sewing machine 24 and is rotated, thereby drives double cog belt 25.Regulating wheel 34, shuttle shaft pulley 33 and upper shaft pulley 31 are followed the driving of double cog belt 25 and are rotated.Therefore, lower shaft 22, shuttle axle 23 and upper axle 21 are rotated.When upper axle 21 rotation, belt shaft 40 is rotated by joint 15.Lower shaft pulley 32 is identical with upper shaft pulley 31 diameters, and the number of teeth of peripheral part separately equates.Therefore, upper axle 21 and lower shaft 22 rotate in the same direction with identical rotating speed.The diameter of shuttle shaft pulley 33 is less than the diameter of lower shaft pulley 32.The number of teeth of the peripheral part of shuttle shaft pulley 33 is half of the number of teeth of the peripheral part of lower shaft pulley 32.Therefore, shuttle axle 23 rotates in the opposite direction with the rotating speed of 2 times of lower shaft 22.Lower shaft 22 rotation and drive cloth feeding mechanism 11, shuttle axle 23 rotations and drive rotating shuttle 13, upper axle 21 rotations and drive upper and lower driving mechanism 14(eedle 8).When Sewing machines 1 drives motor of sewing machine 24, cloth feeding mechanism 11, rotating shuttle 13(are with reference to Fig. 2) and eedle 8 with suitable speed, synchronously driven respectively.Sewing machines 1 is by carrying sewn object and eedle 8 is moved up and down with cloth feeding mechanism 11, and the upper thread ring passing from eedle 8 with spur (the omitting diagram) seizure of rotating shuttle 13, thereby on sewn object, forms needle tracking.The motor of sewing machine 24 that has weight and become vibration source is disposed at the 3(of support portion with reference to Fig. 1) inside.Therefore, the center of gravity of Sewing machines 1 integral body reduces, so vibration when Sewing machines 1 can reduce to make.The motor of sewing machine 24 that Sewing machines 1 can generate heat when driving is disposed in support portion 3, therefore can reduce the rising of the temperature of the horn portion 5 that operator frequently touches.Lower shaft 22, shuttle axle 23 and upper axle 21, by double cog belt 25 interlocks, therefore, do not need to be lubricated with lubricated wet goods.Owing to not having lubricating oil splash, so Sewing machines 1 can prevent that motor of sewing machine 24 from insulation degradation occurring.
With reference to Fig. 7, illustrate that double cog belt 25 results from the torque of regulating wheel 34 while moving on the peripheral part of regulating wheel 34.Follow the driving of motor of sewing machine 24, the counter clockwise direction (Fig. 7 arrow B direction) of double cog belt 25 when observing from right side is mobile.The counter clockwise direction rotation when observing from right side of lower shaft pulley 32, regulating wheel 34 and upper shaft pulley 31.The clockwise direction rotation of shuttle shaft pulley 33 when observing from right side.When double cog belt 25 moves on the peripheral part of regulating wheel 34, the torque that produces the counter clockwise direction when observing from right side (Fig. 7 arrow C direction) centered by the axis of eccentric part 71C at regulating wheel 34.Torque is delivered to eccentric part 71C via regulating wheel 34.77 couples of eccentric part 71C of torsion spring apply the torque of the counter clockwise direction when observing from right side centered by the axis of eccentric part 71C (Fig. 7 arrow A direction).The direction of torque that torsion spring 77 puts on eccentric part 71C is identical with the direction of torque that is resulted from regulating wheel 34 by moving of double cog belt 25.Even if double cog belt 25 moves, regulating wheel 34 is also difficult for swinging to the direction of going towards the inner side of double cog belt 25.Therefore, Sewing machines 1 can make double cog belt 25 be difficult for swinging, and can make the movement of double cog belt 25 stable.
With reference to Fig. 8, illustrate that Sewing machines 1 suppresses the process of the string chatter of double cog belt 25.When Sewing machines 1 changes sewing speed, motor of sewing machine 24 changes the rotating speed of output shaft 26.When the rotation speed change of the output shaft 26 of motor of sewing machine 24, the rotating speed of upper axle 21, lower shaft 22 and shuttle axle 23 changes.When the frequency of vibration of the rotating speed of at least one axle based in upper axle 21, lower shaft 22 and shuttle axle 23 and the resonant frequency of double cog belt 25 equate, at double cog belt 25, can produce strings vibration.The resonant frequency of double cog belt 25 depends on quality, the length of double cog belt 25 and acts on tension force of double cog belt 25 etc.When producing string vibration, the part (hereinafter referred to as string portion) not contacting with upper shaft pulley 31, lower shaft pulley 32, shuttle shaft pulley 33 and regulating wheel 34 in double cog belt 25 can produce string vibration.When continuing to produce string vibration, string portion can swing, and result produces string chatter.
When producing string vibration, the string portion between upper shaft pulley 31 and lower shaft pulley 32 is elongated.Double cog belt 25 draws this regulating wheel 34 to the direction (arrow D direction) that makes regulating wheel 34 approach shuttle shaft pulley 33 and lower shaft pulley 32.On regulating wheel 34, produce by eccentric part 71C(with reference to Fig. 5) axis centered by the torque of clockwise direction (arrow E direction) when observing from right side.Torque is delivered to eccentric part 71C via regulating wheel 34.Eccentric part 71C overcomes torque that torsion spring 77 applies and the rotation of the clockwise direction when observing from right side centered by the axis of eccentric part 71C.When eccentric part 71C rotates, bearing portion 72A(is with reference to Fig. 6) inwall (omit diagram) and ball (omitting diagram) rotation.When eccentric part 71C rotates, regulating wheel 34 swings towards the direction (arrow D direction) that approaches lower shaft pulley 32 and shuttle shaft pulley 33.The tension force that regulating wheel 34 puts on double cog belt 25 reduces, and double cog belt 25 is lax.When the tension force of double cog belt 25 reduces, the resonant frequency of double cog belt 25 reduces.Resonant frequency becomes the value different from the frequency of the vibration of rotating speed based on upper axle 21, lower shaft 22, shuttle axle 23.Therefore, string vibration decays immediately and finishes after producing.Therefore, Sewing machines 1 can suppress string chatter rapidly.After string vibration has just finished, eccentric part 71C goes to original position at the effect backspin of the torque of torsion spring 77 immediately.Regulating wheel 34 swings to the original position shown in Fig. 7, in tackling the state of ensuing string vibration.
The mode that bearing portion 72A can rotate with eccentric part 71C supports this eccentric part 71C.When having produced string vibration, eccentric part 71C can easily make regulating wheel 34 swing towards the direction that approaches lower shaft pulley 32 and shuttle shaft pulley 33.Therefore, Sewing machines 1 has improved the fast-response for the generation of string vibration.When string vibration finishes, under the effect of the torque that eccentric part 71C applies at torsion spring 77, easily make regulating wheel 34 return to original position.Therefore, Sewing machines 1 can improve the fast-response that regulating wheel 34 returns to original position.Therefore, Sewing machines 1 can make for the response of the generation of string vibration good.
Bearing portion 72A is owing to being coated with lubricating grease, and therefore, inwall and ball can rotate swimmingly.Follow generation and the end of string vibration, in the mode that can rotate, be supported portion 72 and be easy to rotation by the eccentric part 71C of bearing portion 72A supporting.Therefore, Sewing machines 1 can make for the response of the generation of string vibration more good.
Eccentric part 71C is inserted into the inner side of winder 77A.On the circumference of four engaging portion 78C imaginary circle centered by the axis by eccentric part 71C.Therefore the torque that, torsion spring 77 puts on eccentric part 71C is directly proportional to the rotation amount of eccentric part 71C.The torque that torsion spring 77 puts on eccentric part 71C can sharply not change according to the rotation amount of eccentric part 71C.Therefore, Sewing machines 1 can carry out the response for the string vibration of double cog belt 25 swimmingly.
As mentioned above, when double cog belt 25 produces string vibration, regulating wheel 34 swings towards the direction that approaches lower shaft pulley 32 and shuttle shaft pulley 33 centered by the axis of eccentric part 71C.The tension force that puts on double cog belt 25 reduces and resonant frequency is reduced, and thus, string vibration decays immediately and finishes after producing.Sewing machines 1 changes the tension force of double cog belt 25 and string vibration is finished.Therefore, Sewing machines 1 can suppress string chatter.After string vibration finishes, the effect lower swing of the torque that regulating wheel 34 applies at torsion spring 77, to original position, vibrates thereby can tackle ensuing string.Therefore, Sewing machines 1 can make for the response of the generation of string vibration good.
Fixture structural unit 75 restriction supports 72 move towards left, thereby restriction eccentric part 71C and regulating wheel 34 move towards left.Winder 77A towards left to supporting member 78 application of forces, thereby restriction eccentric part 71C and regulating wheel 34 are towards right-hand movement.Therefore, Sewing machines 1 has limited the movement of the regulating wheel that axial region 71A supports 34 on axis direction, so Sewing machines 1 can stably suppress string chatter.
Engaging portion 78C is an example of a plurality of the first engaging portions of the present utility model.Engaging portion 73D is an example of the second engaging portion of the present utility model.Through hole 73C is an example of through hole of the present utility model.The example that eccentric part 71C, fixed component 76 and supporting member 78 are eccentric shaft of the present utility model.
Above-mentioned embodiment can carry out various changes.For example, also can be as shown in Figure 9, by through hole 78A(with reference to Fig. 5) centered by the circumference of imaginary circle on the circular-arc slotted hole 80 along the circumferential direction extending is set, engaging portion 81 is set in slotted hole 80.Engaging portion 81 is by being inserted into the bar portion (omit diagram) of the bolt in slotted hole 80 from left and from the formations such as nut 811 of right-hand fixed bar portion.By unscrewing nut 811, bolt is moved along slotted hole 80, can adjust the position of engaging the first arm 77B.That is, can adjust the first arm 77B of torsion spring 77 and the angle between the second arm 77C, thereby can adjust, put on eccentric part 71C(with reference to Fig. 5) torque.
Also can make the first arm 77B extend towards the place ahead, the second arm 77C is extended towards below.And engaging portion 78C is located to the place ahead of through hole 78A, engaging portion 73D is located to the rear upside of through hole 73C.The second arm 77C also can be directly fixed on support portion 3.
The axis of eccentric part 71C also can depart from towards top the axis of an axial region 71A.In this case, can change the direction of the torque that puts on eccentric part 71C.
Bearing portion 72A also can omit.Also motor of sewing machine 24 can be located to the right-hand of upper axle 21, and replace the output shaft 26 of belt shaft 40 configuration motor of sewing machine 24.Also motor of sewing machine 24 can be located to the right-hand of shuttle axle 23, and form integratedly output shaft 26 with the right part of shuttle axle 23.
Claims (12)
1. a Sewing machines, it comprises:
Upper axle (21), it is flatly located in horn portion (5), is connected with the up-down mechanism (14) that shank (7) is moved up and down;
Lower shaft (22), itself and above-mentioned upper axle are located at the support portion (3) that is positioned at above-mentioned horn subordinate side abreast, are connected with the cloth feeding mechanism (11) at above-mentioned lower parts of needle conveying sewn object;
Shuttle axle (23), itself and above-mentioned lower shaft are located in above-mentioned support portion abreast, are connected with rotating shuttle (13);
Lower shaft pulley (32), it is located at above-mentioned lower shaft, under the driving of motor of sewing machine (24), together rotates with above-mentioned lower shaft;
Upper shaft pulley (31), it is located at above-mentioned upper axle, together rotates with above-mentioned upper axle;
Shuttle shaft pulley (33), it is located at above-mentioned shuttle axle, together rotates with above-mentioned shuttle axle; And
Double cog belt (25), it has internal tooth and external tooth, and so that the peripheral part of above-mentioned internal tooth and above-mentioned lower shaft pulley and the engagement of the peripheral part of above-mentioned upper shaft pulley, the mode of the peripheral part engagement of aforementioned external teeth and above-mentioned shuttle shaft pulley is opened and be located at above-mentioned lower shaft pulley, above-mentioned upper shaft pulley and above-mentioned shuttle shaft pulley
This Sewing machines is characterised in that, it comprises:
Regulating wheel (34), itself and above-mentioned lower shaft pulley, above-mentioned shuttle shaft pulley are located in above-mentioned support portion abreast, between the above-mentioned lower shaft pulley in the configuration path of above-mentioned double cog belt and above-mentioned shuttle shaft pulley with the internal tooth engagement of its peripheral part and above-mentioned double cog belt;
Prop up axial region (71A), its mode that can rotate with above-mentioned regulating wheel supports above-mentioned regulating wheel;
Eccentric shaft (71C, 76,78), it is with respect to above-mentioned axial region bias, and is connected with above-mentioned axial region by connecting portion (71B), in the mode that can rotate, is supported in above-mentioned support portion; And
Torsion spring (77), it applies the torque that above-mentioned regulating wheel is swung towards the direction of leaving above-mentioned lower shaft pulley and above-mentioned shuttle shaft pulley to above-mentioned eccentric shaft.
2. Sewing machines according to claim 1, is characterized in that,
The torque that above-mentioned torque and above-mentioned double cog belt result from above-mentioned eccentric shaft while moving on the above-mentioned peripheral part of above-mentioned regulating wheel is towards same direction.
3. Sewing machines according to claim 1, is characterized in that,
This Sewing machines comprises:
Support (72), it is fixed in above-mentioned support portion, and the mode that can rotate with above-mentioned eccentric shaft supports above-mentioned eccentric shaft; And
Bearing portion (72A), it is located between above-mentioned support and above-mentioned eccentric shaft in above-mentioned support.
4. Sewing machines according to claim 1, is characterized in that,
Above-mentioned torsion spring comprises:
The first arm (77B), it is from distolateral extending out of winder (77A); And
The second arm (77C), it is from another distolateral extending out of above-mentioned winder,
Above-mentioned the first arm engaging any one first engaging portion in a plurality of the first engaging portions (78C) of being located at above-mentioned eccentric shaft,
Second engaging portion (73D) of above-mentioned the second arm engaging in being located at above-mentioned support portion.
5. Sewing machines according to claim 2, is characterized in that,
Above-mentioned torsion spring comprises:
The first arm, it is from distolateral extending out of winder; And
The second arm, it is from another distolateral extending out of above-mentioned winder,
Above-mentioned the first arm engaging any one first engaging portion in a plurality of the first engaging portions of being located at above-mentioned eccentric shaft,
Second engaging portion of above-mentioned the second arm engaging in being located at above-mentioned support portion.
6. Sewing machines according to claim 3, is characterized in that,
Above-mentioned torsion spring comprises:
The first arm, it is from distolateral extending out of winder; And
The second arm, it is from another distolateral extending out of above-mentioned winder,
Above-mentioned the first arm engaging any one first engaging portion in a plurality of the first engaging portions of being located at above-mentioned eccentric shaft,
Second engaging portion of above-mentioned the second arm engaging in being located at above-mentioned support portion.
7. Sewing machines according to claim 4, is characterized in that,
Above-mentioned the first arm is than above-mentioned the second brachium.
8. Sewing machines according to claim 5, is characterized in that,
Above-mentioned the first arm is than above-mentioned the second brachium.
9. Sewing machines according to claim 6, is characterized in that,
Above-mentioned the first arm is than above-mentioned the second brachium.
10. according to the Sewing machines described in any one in claim 4～9, it is characterized in that,
Above-mentioned eccentric shaft is inserted into the inner side of the above-mentioned winder of above-mentioned torsion spring,
At above-mentioned eccentric shaft, be provided with supporting member (78), above-mentioned supporting member is supported on above-mentioned a plurality of the first engaging portions on the circumference of the imaginary circle centered by the axis of above-mentioned eccentric shaft.
11. Sewing machiness according to claim 10, is characterized in that,
This Sewing machines also comprises:
Tabular component (73), it is fixed in above-mentioned support portion, the through hole (73C) that has above-mentioned the second engaging portion and insert for above-mentioned eccentric shaft; And
Fixture structural unit (75), it is located at the peripheral part of above-mentioned eccentric shaft, and engaging is in the circumference of above-mentioned through hole,
Above-mentioned supporting member is tabular, is positioned at the end of that side contrary with above-mentioned axial region of above-mentioned eccentric shaft,
Above-mentioned fixture structural unit from that side engaging contrary with above-mentioned supporting member of above-mentioned tabular component in above-mentioned circumference,
Above-mentioned torsion spring with the state configuration compressed on axis direction between above-mentioned supporting member and above-mentioned tabular component.
12. Sewing machiness according to claim 11, is characterized in that,
Above-mentioned motor of sewing machine is disposed in above-mentioned support portion, has the output shaft (26) linking with above-mentioned lower shaft one.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013-070508 | 2013-03-28 | ||
| JP2013070508A JP2014193217A (en) | 2013-03-28 | 2013-03-28 | Sewing machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203807737U true CN203807737U (en) | 2014-09-03 |
Family
ID=51446520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420141760.XU Expired - Lifetime CN203807737U (en) | 2013-03-28 | 2014-03-26 | Sewing machine |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2014193217A (en) |
| CN (1) | CN203807737U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105177880A (en) * | 2015-09-30 | 2015-12-23 | 杰克缝纫机股份有限公司 | Transmission mechanism of sewing machine |
| CN106012349A (en) * | 2016-07-29 | 2016-10-12 | 成都卡美多鞋业有限公司 | Antiskid sewing mechanism |
| CN106012348A (en) * | 2016-07-29 | 2016-10-12 | 成都卡美多鞋业有限公司 | Shoe upper sewing machine |
| CN106012350A (en) * | 2016-07-29 | 2016-10-12 | 成都卡美多鞋业有限公司 | Improved structure of shoe upper sewing machine |
| CN107389840A (en) * | 2017-08-09 | 2017-11-24 | 国网浙江省电力公司电力科学研究院 | A kind of device for formulating and method of Dissolved Gases in Insulating Oil Component Standard sample |
| CN108286136A (en) * | 2018-04-03 | 2018-07-17 | 南京亚奇过滤材料设备有限公司 | A kind of broken string identification warning device and method |
| CN108978058A (en) * | 2018-09-06 | 2018-12-11 | 杰克缝纫机股份有限公司 | A kind of seaming and cutting machine |
| CN110565283A (en) * | 2019-09-16 | 2019-12-13 | 杰克缝纫机股份有限公司 | Sewing machine |
| CN110804809A (en) * | 2019-11-11 | 2020-02-18 | 杰克缝纫机股份有限公司 | Sewing machine and needle bar mechanism |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6557026B2 (en) * | 2015-02-26 | 2019-08-07 | 蛇の目ミシン工業株式会社 | sewing machine |
| JP7226711B2 (en) * | 2019-02-28 | 2023-02-21 | 範多機械株式会社 | Knocking device |
-
2013
- 2013-03-28 JP JP2013070508A patent/JP2014193217A/en active Pending
-
2014
- 2014-03-26 CN CN201420141760.XU patent/CN203807737U/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105177880A (en) * | 2015-09-30 | 2015-12-23 | 杰克缝纫机股份有限公司 | Transmission mechanism of sewing machine |
| CN106012349A (en) * | 2016-07-29 | 2016-10-12 | 成都卡美多鞋业有限公司 | Antiskid sewing mechanism |
| CN106012348A (en) * | 2016-07-29 | 2016-10-12 | 成都卡美多鞋业有限公司 | Shoe upper sewing machine |
| CN106012350A (en) * | 2016-07-29 | 2016-10-12 | 成都卡美多鞋业有限公司 | Improved structure of shoe upper sewing machine |
| CN107389840A (en) * | 2017-08-09 | 2017-11-24 | 国网浙江省电力公司电力科学研究院 | A kind of device for formulating and method of Dissolved Gases in Insulating Oil Component Standard sample |
| CN108286136A (en) * | 2018-04-03 | 2018-07-17 | 南京亚奇过滤材料设备有限公司 | A kind of broken string identification warning device and method |
| CN108286136B (en) * | 2018-04-03 | 2023-08-29 | 南京亚奇过滤材料设备有限公司 | Broken line identification alarm device and method |
| CN108978058A (en) * | 2018-09-06 | 2018-12-11 | 杰克缝纫机股份有限公司 | A kind of seaming and cutting machine |
| CN110565283A (en) * | 2019-09-16 | 2019-12-13 | 杰克缝纫机股份有限公司 | Sewing machine |
| CN110804809A (en) * | 2019-11-11 | 2020-02-18 | 杰克缝纫机股份有限公司 | Sewing machine and needle bar mechanism |
| CN110804809B (en) * | 2019-11-11 | 2021-09-10 | 杰克缝纫机股份有限公司 | Sewing machine and needle bar mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2014193217A (en) | 2014-10-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203807737U (en) | Sewing machine | |
| JP4624169B2 (en) | Sewing machine feeder | |
| CN107447377B (en) | Sewing machine | |
| JP6159568B2 (en) | sewing machine | |
| CN103194860A (en) | Buttonholing machine | |
| US9670608B2 (en) | Sewing machine | |
| JP2013070919A (en) | Sewing machine | |
| CN201695188U (en) | Lower shaft tooth space adjusting device for sewing machine | |
| TWI660086B (en) | Tailor | |
| JP2013212189A (en) | Sewing machine | |
| KR101170841B1 (en) | Looper drive device | |
| JP7015095B2 (en) | Sewing machine needle hook timing adjustment device | |
| JP4401530B2 (en) | Eyelet hole sewing machine | |
| US3313258A (en) | Needle jogging mechanisms | |
| JPH08131678A (en) | Walking sewing machine | |
| US2128031A (en) | Sewing machine | |
| JP2016209560A (en) | Stitch length adjustment device for sewing machine and sewing machine with the stitch length adjustment device | |
| EP2189564B1 (en) | Looper mechanism of buttonholing machine | |
| US865149A (en) | Sewing-machine. | |
| CN203807732U (en) | Sewing machine | |
| JP2005279041A (en) | Device for vertically driving intermittent presser foot, and sewing machine including the same | |
| JP3758551B2 (en) | Needle feed sewing machine | |
| CN1840761B (en) | Needle swing unit of sewing machine | |
| JPH01313086A (en) | Sewing machine equipped with needle rod supported by frame | |
| EP3798343B1 (en) | Differential feeding lasting machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140903 |