CN1676718A - Sewing machine - Google Patents
Sewing machine Download PDFInfo
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- CN1676718A CN1676718A CN 200510056264 CN200510056264A CN1676718A CN 1676718 A CN1676718 A CN 1676718A CN 200510056264 CN200510056264 CN 200510056264 CN 200510056264 A CN200510056264 A CN 200510056264A CN 1676718 A CN1676718 A CN 1676718A
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Abstract
A sewing machine is provides with a stepmotor and a gear driving mechanism for driving a cloth presser cam and a tread sweeping cam through driving gears by the stepmotor, the gear driving mechanism comprising driving gear fixed on the output shaft of the stepmotor, and a driven gear for driving the cloth presser cam and tread sweeping cam, wherein the diameter of the driving gear is made smaller than the diameter of the driven gear.
Description
Technical field
Move the Sewing machines of the sort of structure by gear driven mechanism, the line of dialling carrying out the compress action of compress pin and dial the line device by actuator when the present invention relates to make beginning.
Background technology
In the past, in the Sewing machines that forms noose reinforcing stitching, the cloth presser that when being provided with stitching formation the compress pin that pushes processing cloth is driven, be provided with simultaneously by dial the line device to the thread end of reaching the standard grade sagging from the eyelet of suture needle dial line thread-laying mechanism, this structure is practicability.
For example, in Japan's endorsement of patent is openly put down into 5 years the 69560th communiques, record a kind of have to make the cloth presser that the compress pin moves up and down and make dial line arm (dialling the line device) and swing in the Sewing machines of the thread-laying mechanism of operating position and position of readiness.And these cloth pressers and thread-laying mechanism are driven by shared drive unit.This drive unit is made of power cam, clutch body, powered pulley etc.
In this Sewing machines, make beginning before, dial the line arm and be positioned at operating position, the pressing plate of the lower end of bar is in lifting position simultaneously, so have the gap between pressing plate and spring bearer plate, the presser feet pawl is in lifting position.
In case step on the startup pedal, then along with the rotation of powered pulley, make group line arm swing to position of readiness by dialling the line linkage from operating position, last thread end sagging from the eyelet of suture needle is dialled line, by the presser feet linkage pressing plate is descended simultaneously, the presser feet pawl is descended by stage clip.
Yet, recently, carry out the occasion of contraposition etc. at sewing position to the processing cloth Gong making, wish to have a kind ofly to make the height and position that the presser feet pawl moves up and down and indicated by the numerical value of guidance panel and be held in the such structure of height and position.For this reason, as drive source, considered to adopt the stepping motor that to regulate amount of spin.In this occasion, employing be following structure: by driving this stepping motor, rotation drives the presser feet cam and dials line cam, by compress pin cam the presser feet pawl is moved up and down, and makes and dials the line arm and dial line and move by dialling line cam simultaneously.
In this occasion, generally be to give elasticity with spring member by compress, make the compress roller all the time with compress cam butt, give elasticity by dialling line with spring member simultaneously, make dial the line roller also all the time with dial the line cam butt.
And, when adopting by the output shaft of above-mentioned 1 stepping motor simultaneously the presser feet cam of elastic force effect and dialling the structure that line cam directly drives, need big driving torque as stepping motor.
Promptly, this stepping motor can simultaneously and directly produce following effect: in the occasion that is made the compress pin rise and move by above-mentioned stepping motor, the compress roller overcomes compress with the elastic force of the spring member operating duty when the radius direction of expansion moves along the compress cam, add the occasion of dialling the line arm swing making, dial the line roller and overcome and dial line with the elastic force of the spring member operating duty when the radius direction of expansion moves along dialling line cam.
Like this, need large-scale stepping motor, exist Sewing machines and maximize and the high problem of cost of manufacture in order to produce big driving torque.
Summary of the invention
In view of the above problems, the object of the invention is, in the structure that cloth presser and thread-laying mechanism is driven with 1 stepping, even the rotation torque of this stepping motor is little, also cloth presser and thread-laying mechanism can be driven fully, the little stepping motor of rotation torque can be adopted.
Sewing machines of the present invention has: make cloth presser that the compress pin moves up and down and make the line device of dialling that the thread end of reaching the standard grade is dialled line carry out and dial the thread-laying mechanism that line moves by dialling line cam by the compress cam, it is characterized in that, comprising: common 1 stepping motor that described compress cam and group line cam are driven; And by a plurality of gears that drive by described stepping motor to described compress cam with dial the gear driven mechanism that line cam drives, described gear driven mechanism has: be fixed in the driven wheel on the stepping motor output shaft; And to described compress cam with dial the driven gear that line cam drives, the diameter of described driven wheel is less than the diameter of described driven gear.
Thus, owing to have gear mechanism, and the driven gear that this gear mechanism has the driven wheel on the output shaft that is fixed in stepping motor and described compress cam and group line cam are driven, the diameter of driven wheel is less than the diameter of driven gear, driven wheel and driven gear have been adopted by this gear driven mechanism, by stepping motor to the compress cam with dial the structure that line cam drives, therefore, with directly the rotation torque of compress cam when dialling line cam and drive compared by stepping motor, can drive than corresponding big rotation torque by gear with driven wheel and driven gear.Like this,, the little miniature motor of rotation torque can be adopted, the cost degradation of Sewing machines can be realized as stepping motor.
The simple declaration of accompanying drawing
Fig. 1 is the side view that the electronics noose in the embodiments of the invention is reinforced Sewing machines.
The stereogram that Fig. 2 sees for the rear that reinforces Sewing machines from the electronics noose.
Fig. 3 reinforces the in-built side view of Sewing machines for the electronics noose.
Fig. 4 reinforces the rearview of Sewing machines for the electronics noose.
Fig. 5 is the vertical profile side view of the 5-5 line of Fig. 4.
Fig. 6 is for dialling the front view that the line device is positioned at the electronics noose reinforcing Sewing machines of swing position.
Fig. 7 is positioned at figure position of readiness, suitable with Fig. 6 for dialling the line device.
Fig. 8 is figure rotatable phase, suitable with Fig. 5 that has changed group line cam.
The time diagram that Fig. 9 A does for expression compress foot-propelled.
The time diagram of dialling the action of line device when Fig. 9 B expects for expression is thin.
The time diagram of dialling line device action of Fig. 9 C during for the thick material of expression.
Figure 10 is figure in the change form, suitable with Fig. 4.
The specific embodiment
The following describes the embodiment that the present invention is applicable to electronics noose reinforcing Sewing machines.As shown in Figure 1 and Figure 2, electronics noose reinforcing Sewing machines 1 is put on operation post 8.This Sewing machines 1 forwards extends by pedestal part 2, from the upright upward column sections 5 of establishing of the rearward end of pedestal part 2 and from the upper end of column sections 5 and the arm 6 relative with pedestal part 2 etc. constitutes.
On column sections 5 and arm 6, be provided with by shank 10 (with reference to Figure 10) suture needle 11 (with reference to Figure 10) is driven the sewing machine electromotor 9 (with reference to Fig. 2) of usefulness up and down and the driving force of sewing machine electromotor 9 is passed to driving force transmission mechanism of suture needle 11 etc. by not shown main shaft.In addition, be the inside of head 7 at the leading section of arm 6, be provided with the shank up-down mechanism (not shown) that shank 10 is moved up and down.
In the inside of this head 7, dial line device 60 to what 17 the thread end 17a of reaching the standard grade that is cut off by thread cutting mechanism dialled that line uses, see on the arrow Q direction and opposite direction thereof that is journaled into Fig. 6 swingably from the front.This group line device 60 is dialled the line action by thread-laying mechanism 52 described later.
On this pedestal part 2, be provided with and make it form noose with the synchronization action that moves up and down of suture needle 11 to reinforce vertical shuttle 14 of stitching, will pass to the lower shaft 15 of this vertical shuttle 14 and make the thread cutting mechanism (not shown) that cuts off of at the end will reaching the standard grade and roll off the production line etc. from the rotary driving force of sewing machine electromotor 9.
The following describes the cloth presser 20 that compress pin 24 is moved up and down.As shown in figures 1 and 3, cloth presser 20 is set on the feeding table 13 that is equipped on above the pedestal part 2, can move along fore-and-aft direction and left and right directions with feeding table 13.
As Fig. 1～shown in Figure 4, see from the side be the base end part (rearward end) of bending and the pressure handle that is supported to cantilever shape 21 be fixed in feeding table 13 above.At the leading section of this pressure handle 21, be formed with about supporting the presser feet installation portion 21a of 1 pair compress pin 24 usefulness.
At the fore-and-aft direction central portion of pressure handle 21, fixing the pivot fulcrum 22 that is left and right directions.In the substantial middle portion of its fore-and-aft direction of the left and right sides of pressure handle 21, supporting towards front and back to the pressure handle bar 23 that extends by pivot fulcrum 22 pivots.
The leading section of pressure handle bar 23, respectively from the rear insert lead to can be supported in with moving up and down presser feet installation portion 21a about 1 pair the connecting hole (not shown) of compress pin 24, engage with compress pin 24.
The rearward end of pressure handle bar 23 is connected with the upper end of the spring axis of guide 25 rotationally.But the bottom above-below direction of the spring axis of guide 25 is supported on the spring support member 26 of pressure handle 21 slidably.Compression helical spring 27 is configured between the spring support portion of the spring support portion of the spring axis of guide 25 and spring support member 26, forms the state of configuration around the spring axis of guide 25.
Among Fig. 1, Fig. 3, utilizing the elastic force of this compression helical spring 27, is that elasticity is given towards the arrow A direction in the center with pivot fulcrum 22.Thus, two compress pin 24 are being urged on needle plate 12 on its down position all the time.
On the other hand, pressure handle bar 23 than pivot fulcrum 22 left and right sides of rear side more, fixing presser feet start plate 28 respectively by bolt 29.
This presser feet start plate 28 is by member 47 (arrow C 4 directions of Fig. 3) member that pushes downwards that moves up and down described later, thus, about 1 pair pressure handle bar 23 overcome the elastic force of compression helical spring 27, be that rotating fulcrum rotates towards anti-arrow A direction with pivot fulcrum 22.Like this, compress pin 24 rises to than needle plate 12 lifting position of upside more.At this, presser feet start plate 28 utilizes the elastic force of compression helical spring 27, and with the lower surface butt of the member 47 that moves up and down, moving up and down does not produce the gap between member 47 and the presser feet start plate 28 all the time.
On the right side wall portions 31a of this fixed mount 31, fix the presser feet that constitutes by stepping motor and dialling line device drive motor 32, dial at this presser feet on the output shaft of line device drive motor 32 and fixing driven wheel 33.Fixed mount 31 is made of with the 31c of connecting wall portion that is connected these two wall portions at downside right side wall portions 31a, the 31b of left side wall portion, and its rear side and upper side are open respectively.
Dial at presser feet on the output shaft of the reverse side that is fixed with driven wheel 33 of line device drive motor 32, affixed the presser feet that detects is dialled the disc plate 51 (this member is suitable with the phase-detection member) that line device drive motor 32 origin positions are used, and is provided with photoelectric sensor (not shown) in the next door of disc plate 51 one.
During power connection, presser feet is dialled the direction of rotation rotation of line device drive motor 32 towards regulation, and photoelectric sensor detects the disc plate 51 of rotation, and the output origin position is set the origin position detection signal of usefulness.
The right side wall portions 31a of fixed mount 31 and the 31b of left side wall portion, rotatably pivot is supporting 1 camshaft 34 that is left and right directions.On this camshaft 34, from the right side according to the driven gear 35 of driven wheel 33 engagement, make compress pin 24 move up and down (compress action) compress cam 36, make dial line device 60 produce dial the lines action group line cam 53 this be configured in proper order.Driven gear 35 is integrally formed with compress cam 36, is fixed on the camshaft 34 by fixing Screw 37.Dialling line cam 53 is fixed on the camshaft 34 by fixing Screw 38.
In addition, presser feet is dialled line device drive motor 32 and is fixed near on the right side wall portions 31a of driven gear 35.
Described group of line cam 53 unclamps described fixedly Screw 38 by using instruments such as screwdriver, can finely tune group line cam 53 and make its change with respect to the phase position of the relativity of compress cam 36.
On the compress cam 36 that with the rotatable phase is benchmark, mint-mark has round reference mark M.And, in the position, next door of this reference mark M that dials line cam 53, vacate predetermined distance ground respectively mint-mark 2 aignment mark m1, m2 are arranged.
When making the processing cloth of thin material, as long as with aignment mark m1 alignment fiducials mark M, this place makes the line action begins constant time lag with respect to the execution of compress action the limit positions of dialling of dialling line device 60.
In addition, when making the processing cloth of thick material, as long as with aignment mark m2 alignment fiducials mark M, this place makes group execution that the line action is moved with respect to compress of dialling line device 60 begin the limit positions of regularly doing sth. in advance.Like this, these marks M can not only be used effectively, m1, m2 are used as benchmark, and the relative position of dialling 53 pairs of compress cams 36 of line cam can be easily changed.
It is to make compress pin 24 produce the compress action, make group line device 60 carry out the shared motor of dialling the line action simultaneously that presser feet is dialled line device drive motor 32.The diameter of driven wheel 33 is littler than the diameter of driven gear 35, and gear is than big, so can produce big rotation torque.
Shown in Fig. 9 A, 9B, 9C, rotating cam is that compress cam 36 and group line cam 53 are fixed on the camshaft 34, forms by compress cam 36 to make the compress action of compress pin 24 and make the line action of dialling of group line device 60 repeat such phase place by dialling line cam 53.Rotation along with presser feet is dialled line device drive motor 32 makes compress cam 36 and dials the rotation of line cam 53 one by driven wheel 33 and driven gear 35.
By these driven wheels 33, driven gear 35,
Camshaft34 grades have constituted gear driven mechanism 50.
As Fig. 2～shown in Figure 4,, fixing the pivot fulcrum 40 that is left and right directions in the upper end of the right side wall portions 31a and the 31b of left side wall portion of fixed mount 31.On this pivot fulcrum 40, pivot is supporting the 1st pressure arm 41 rotationally.In the lower end of the driving side arm 41a of the 1st pressure arm 41, connecting in the past can with the pushing of the cam surface butt of compress cam 36 with roller 42.
On the slave end arm 41b of the 1st pressure arm 41, connecting the rearward end of the pushing connecting rod 43 that is fore-and-aft direction.The leading section of this pushing connecting rod 43 is connected with the driving side arm 45a of the 2nd pressure arm 45 of L word shape.The 2nd pressure arm 45 is bearing on the pivot fulcrum 40 of the not shown framework that is fixed in arm 6 by pivot rotationally.
On the slave end arm 45b of the 2nd pressure arm 45, affixed an end of pin 36, the other end of this pin 36 is connected with square 48.This square 48 can be installed on the member 47 that moves up and down slidably along fore-and-aft direction, and this member 47 that moves up and down can be bearing on the framework of arm 6 by pivot with moving up and down.In the lower end that moves up and down member 47, has the horizontal plate that presser feet start plate 28 is pushed downwards.
Setting-in draft helical spring 49 between the slave end arm 41b of the 1st pressure arm 41 and framework, gives towards the pushing force of the cam surface direction of compress cam 36 with roller 42 to pushing all the time.
When presser feet was dialled line device drive motor 32 and just changeed (arrow C 1 direction) and drives, camshaft 34 drove towards arrow C 1 direction (counterclockwise) in Fig. 3.Like this, the pushing bending actuating cam portion 36A of roller 42 along compress cam 36, the elastic force writing brush radius direction of expansion that overcomes draft helical spring 49 moves, so the 1st pressure arm 41 rotates towards arrow C 2 directions.By pushing connecting rod 43 the 2nd pressure arm 45 is rotated towards arrow C 3 directions, the member 47 that moves up and down overcome the elastic force of compression helical spring 27 and descend (moving) towards arrow C 4 directions presser feet start plate 28 is pushed.Thus, pressure handle bar 23 rotates towards anti-arrow A direction, and the compress pin 24 that engages with the leading section of pressure handle bar 23 begins to rise (moving towards arrow C 5 directions) from Fig. 3 and down position shown in Figure 7, moves to the lifting position (with reference to Fig. 6) that rises with predetermined distance.In addition, the state of Fig. 6 is corresponding with the state of Fig. 5.
On the other hand, dial line device drive motor 32 when presser feet and reverse (the anti-arrow C 1 direction rotation of Fig. 5) when driving from the state of Fig. 5, by compress cam 36 the 1st pressure arm 41 is rotated towards anti-arrow C 2 directions, the 2nd pressure arm 45 rotates towards anti-arrow C 3 directions.Like this, the rising (towards moving of anti-arrow C 4 directions) along with the member 47 that moves up and down makes pressure handle bar 23 rotate towards the arrow A direction.Thus, compress pin 24 moves to the down position (with reference to Fig. 7) that descends from lifting position shown in Figure 6.
Below with reference to Fig. 2, Fig. 3, Fig. 5, illustrate and make at the end by dialling 60 pairs of performed thread-laying mechanisms 52 of dialling the line action of thread end 17a that cut off by thread cutting mechanism of line device.
On aforesaid pivot fulcrum 40, pivot is supporting the 1st group of line arm 54, in the lower end of the driving side arm 54a of the 1st group of line arm 54, connecting in the past can with the cam surface butt of dialling line cam 53 dial line with roller 55.
On the slave end arm 54b of the 1st group of line arm 54, connecting the rearward end of dialling line connecting rod 56 that is fore-and-aft direction.The leading section of this group line connecting rod 56 is connected with the driving side arm 58a of the 2nd group of line arm 58.
Should
The 2nd group of line arm 58Be L word shape, be bearing on the pivot fulcrum 57 of the not shown framework that is fixed in arm 6 by pivot rotationally.The slave end arm 58b of the 2nd group of line arm 58 is connected with the upper end of dialling line connecting rod 59 of above-below direction.
On the other hand, as shown in Figure 6, on the 7a of jaw portion (bottom) of head 7, by the pivot support bolt 61 that is fixed in the fore-and-aft direction on the framework of the 7a of jaw portion, pivot is supporting the base end part of dialling line device 60 of L word shape rotationally.The bottom of dialling line connecting rod 59 is connected with the actuating arm 60a of this group line device 60.
As shown in Figure 3, setting-in draft helical spring 62 between the slave end arm 54b of the 1st group of line arm 54 and framework.Utilize the elastic force of this draft helical spring 62, give the pushing force of the cam surface direction of dialling line cam 53 with roller 55 to dialling line all the time.
The leading section of described group of line device 60 forwards forms bending, can dial line to the thread end 17a that hangs down from the eyelet of suture needle 11 downwards.The action of this group line is as follows.That is, make when beginning, drive, then among Fig. 3 in case presser feet is dialled line device drive motor 32 counter-rotatings (anti-arrow C 1 direction rotation)
Pivot fulcrum 34Drive towards anti-arrow C 1 direction.Like this, dial line and move towards the reduced radius direction along the bending actuating cam 53A of portion that dials line cam 53 with roller 55, the 1st group of line arm 54 rotates towards anti-arrow C 2 directions, by dialling line connecting rod 56 the 2nd group of line arm 58 rotated towards arrow C 6 directions of Fig. 3 simultaneously.
Thus, group line connecting rod 59 (arrow C 7 directions of Fig. 6) downwards moves, and dials line device 60 and swings from swing position shown in Figure 6 towards arrow Q direction, arrives position of readiness shown in Figure 7.By this swing, thread end 17a sagging from the eyelet of suture needle 11 is dialled to the side of suture needle 11.
On the other hand, make at the end, during driving that dialling line device drive motor 32 when presser feet is just changeing (rotation of arrow C 1 direction), dial line and move towards the radius direction of expansion along the bending actuating cam 53A of portion that dials line cam 53 with roller 55.Like this, with aforementioned opposite, overcome the elastic force of draft helical spring 62, the 1st group of line arm 54 rotates towards arrow C 2 directions.And the 2nd group of line arm 58 rotates towards anti-arrow C 6 directions, along with dialling line connecting rod 59 moving of (arrow C 8 directions of Fig. 7) upward, dials line device 60 and swings towards arrow R direction from the position of readiness of Fig. 7, arrives swing position (with reference to Fig. 6).
The following describes the effect and the effect of the electronics noose reinforcing Sewing machines 1 of this structure.
As shown in Figure 4, when the processing cloth of thin material is made, unclamp fixedly Screw 38, regulate the relative position of dialling line cam 53, the aignment mark m1 that dials line cam 53 is aimed at the reference mark M of compress cam 36.That is, this compress cam 36 becomes position relation shown in Figure 25 with the relative position of dialling line cam 53.On the position of this Fig. 5, compress pin 24 is in the lifting position of Fig. 6, and group line device 60 is in the swing position with Fig. 6.
Under this state, make when beginning, when stepping on the not shown foot pedal of operation, presser feet is dialled line device drive motor 32 counter-rotatings (the anti-arrow C 1 direction rotation of Fig. 5) and is driven about 100 degree.On this basis, synchronously rotation simultaneously of compress cam 36 and group line cam 53.
Fig. 9 A represents the action of compress pin 24, Fig. 9 B represents the action of dialling line device 60 of thin occasion of expecting (compress cam 36 and group line cam 53 are in the occasion of the phase state of Fig. 5), and Fig. 9 C represents the occasion (compress cam 36 and group line cam 53 are in the occasion of the phase state of Fig. 8) of thick material.
Shown in Fig. 9 A and Fig. 9 B, compress pin 24 descends since moment t1, and slightly later, group line device 60 to moment t5, swings to position of readiness from swing position from moment t.
Promptly, constantly t3 to t5 constantly roughly in the middle of moment t4 promptly, compress pin 24 will approach the moment t4 that the processing cloth of material closes on before pushing down and carry out the moment Pa that dials lines by dialling line device 60, at this group line moment Pa, reliably thread end 17a is dialled line (with reference to Fig. 7) by dialling line device 60.Like this, can under the situation that the thread end 17a that is pushed aside by group line device 60 is not slammed by compress pin 24, normally begin to make action.
Then, when making the processing end, as previously mentioned, the just commentaries on classics (arrow C 1 direction) of dialling line device drive motor 32 by presser feet drives, and along with compress pin 24 is shifted to lifting position, dials line device 60 and swings to swing position.
In this occasion, as previously mentioned, presser feet is dialled line device drive motor 32 and produced following effect simultaneously: the elastic force that overcomes draft helical spring 49 and compression helical spring 27 makes the operating duty of the mobile usefulness of compress pin 24 risings, adds the elastic force that overcomes draft helical spring 62 and makes group line device 60 carry out group operating duty of line action usefulness on swing position.
Like this, be normally to need big rotation torque by drive source because of having strengthened the compress action and dialled the operating duty of line action, having pretended.
But, if adopt present embodiment, then owing to be provided with the gear driven mechanism 50 that drives compress cam 36 and dial line cam 53 usefulness, the driven wheel 33 of gear driven mechanism 50 is fixed in presser feet to be dialled on the output shaft of line device drive motor 32, driven gear 35 by gear driven mechanism 50 drives compress cam 36 and dials line cam 53, and, the diameter of driven wheel 33 is less than the diameter of driven gear 35, therefore, rotation torque when being dialled line device drive motor 32 by presser feet and directly drive is compared, and can drive than corresponding big rotation torque with the gear of driven wheel 33 with driven gear 35.Thus, dial line device drive motor 32, can adopt the little miniature motor of rotation torque, can realize reinforcing the cost degradation of bartacks 1 as presser feet.
On the other hand, when the processing cloth of thick material is made, unclamp fixedly Screw 38, regulate the relative position of dialling line cam 53, the aignment mark m2 that dials line cam 53 is aimed at the reference mark M of compress cam 36.That is, this compress cam 36 becomes position relation shown in Figure 8 with the relative position of dialling line cam 53.
Under this state, make when beginning, when stepping on the not shown foot pedal of operation, presser feet is dialled line device drive motor 32 counter-rotatings (anti-arrow C 1 direction rotation) and is driven about 100 degree.Like this, compress cam 36 and group line cam 53 synchronously are rotated simultaneously, and shown in Fig. 9 A and Fig. 9 C, compress pin 24 descends since moment t1, and the roughly same time, group line device 60 to moment t3, swings to position of readiness from swing position from moment t1.
Promptly, constantly t1 to t3 constantly roughly in the middle of moment t2 promptly, compress pin 24 carries out the moment Pb that dials lines with the moment t2 that the processing cloth of thick material closes on before pushing down by dialling line device 60, at this group line moment Pb, reliably thread end 17a is dialled line (with reference to Fig. 7) by dialling line device 60.Like this, this occasion also is can normally begin to make action under the situation that the thread end 17a that is pushed aside by group line device 60 is not slammed by compress pin 24.
In addition, adopt present embodiment, because compress cam 36 and group line cam 53 have been arranged on the shared camshaft 34, driven gear 35 and camshaft 34 is affixed, therefore, can use 1 driven gear 35 to rotate and drive compress cam 36 and dial line cam 53, gear driven mechanism is oversimplified.
In addition, owing to the structure that has adopted variable compress cam 36 with the phase position of the relativity of dialling line cam 53, the timing of the relativity that group line of dialling line device 60 that moves with respect to compress pin 24 compresses moves, can change the suitable time according to the raw thickness of the processing cloth of Gong making, therefore, the change operation of dialling the line action is oversimplified.
In addition,, assemble driven gear 35, therefore, can omit the assembling operation of driven gear 35 by compress cam 36 and the assembling of dialling line cam 53 because driven gear 35 is integrally formed with at least one side of compress cam 36 or group line cam 53.
In addition,, therefore, can make driven gear 35 and driven wheel 33 approaching, gear driven mechanism 50 is oversimplified because driven gear 35 is integrally formed with the compress cam 36 that compress cam 36 reaches close driven wheel 33 1 sides in group line cam 53.
In addition, owing to dial output shaft one side's of line device drive motor 32 end at presser feet, be provided with and be used to detect the disc plate 51 that presser feet is dialled the origin position of line device drive motor 32, dial output shaft the opposing party end of line device drive motor 32 at presser feet, be provided with gear driven mechanism 50, therefore, presser feet is dialled line device drive motor 32 and can be carried out the spinning movement of disc plate 51 and the driving of gear driven mechanism 50 simultaneously.
And, because disc plate 51 and presser feet are dialled on the position that line device drive motor 32 is set at separatedly away from gear driven mechanism 50, therefore, can prevent the misoperation that causes to dispersing of disc plate 51 because of gear driven mechanism 50 employed lubricating oil reliably.
In addition, owing to carry out the 1st pressure arm 41 of wobble drive accordingly and carry out the 1st group of line arm 54 of wobble drive accordingly with the cam face of dialling line cam 53 with the cam face of compress cam 36, support by shared pivot fulcrum 40, therefore, use the occasion of using with group line cam to compare with the pivot fulcrum being arranged to specially pressure arm, cloth presser 20 and thread-laying mechanism 52 are oversimplified.
In addition, because presser feet is dialled the right side wall portions 31a that line device drive motor 32 is fixed in the close driven gear 35 in the fixed mount 31, therefore, as long as being dialled line device drive motor 32, presser feet is fixed in the right side wall portions 31a approaching with driven gear 35, driven wheel 33 and driven gear 35 engagements can be made simplifying the structure of gear driven mechanism 50.
In addition, because at the reference mark M as benchmark when compress cam 36 changes with the relative position of dialling line cam 53 of setting on the compress cam, on group line cam 53, aignment mark m1, m2 are set simultaneously, therefore, can not only use these marks M effectively, m1, m2 are used as benchmark, and can easily change compress cam 36 and the relative position of dialling line cam 53, and can improve the operability of alter operation, can realize changing the rapid of operation.
The following describes the change form of above-mentioned example.
1] driven gear 35 both can be integrally formed with camshaft 34, perhaps also can be integrally formed with group line cam 53.In this occasion, because of driven gear 35 is comprised in camshaft 34 or group line cam 53, thus gear driven mechanism 50 is oversimplified, and can reduce the part number.
2] also driven gear 35 and 36 splits of compress cam can be constituted,, can reduce the cost of manufacture of driven gear 35 and compress cam 36 in this occasion.
3] also can adopt graphic form to represent the thickness of thin material, replace the aignment mark m1 that dials mint-mark on the line cam 53, adopt graphic form to represent the thickness of thick material, replace aignment mark m2.In this occasion, the relative position of dialling line device 60 corresponding with sewing thickness regulated oversimplified.
4] in addition, the structure of compress cam and group line cam part also can adopt structure shown in Figure 10.■ on the fixed mount 31A except the 1st camshaft 34A also affixed the 2nd camshaft 34B.On the 1st camshaft 34A, configuration driven gear 35 and dial line cam 53 can be removed driven gear 35 regularly by fixing Screw 37 and to fix, and will dial line cam 53 by fixing Screw 38 and can remove regularly and fix.On the 2nd camshaft 34B, make driven gear 63 and the 36 integrated configurations of compress cam, can remove regularly by fixing Screw 39 and fix, the driven wheel 33 of presser feet being dialled line device drive motor 32 meshes with driven gear 35,63 respectively.
Adopt this structure, can enlarge the free degree of decentralized configuration compress cam 36 and group line cam 53.At this, constituted gear driven mechanism 50A by driven wheel 33, driven gear 35, driven gear the 63, the 1st and the 2nd camshaft 34A, 34B etc.
The present invention is not limited to the embodiment of above-mentioned explanation, can add various changes without departing from the spirit and scope of the present invention, the present invention is applicable to have to make compress pin 24 produce the compress cam 36 of compress action and make and dials the various Sewing machiness of dialling line cam 53 that line is dialled in 60 execution of line device.
Claims (8)
1. Sewing machines has by the compress cam and makes cloth presser that the compress pin moves up and down and make the line device of dialling that the thread end of reaching the standard grade is dialled line carry out and dial the thread-laying mechanism that line moves by dialling line cam, it is characterized in that, comprising:
Common 1 stepping motor that described compress cam and group line cam are driven; And
By a plurality of gears that drive by described stepping motor to described compress cam with dial the gear driven mechanism that line cam drives,
Described gear driven mechanism, have on the output shaft that is fixed in stepping motor driven wheel and to described compress cam with dial the driven gear that line cam drives, the diameter of described driven wheel is less than the diameter of described driven gear.
2. Sewing machines as claimed in claim 1 is characterized in that, described compress cam and described group of line cam are arranged on the shared camshaft, and described driven gear and this camshaft are affixed.
3. Sewing machines as claimed in claim 1 is characterized in that, has adopted the structure of phase position of the relativity of variable described compress cam and described group of line cam.
4. Sewing machines as claimed in claim 3 is characterized in that, as the mark of benchmark, is arranged at least one side of described compress cam and described group of line cam during with the phase position change of the relativity of described compress cam and described group of line cam.
5. Sewing machines as claimed in claim 1 is characterized in that, at least one side of described driven gear and described compress cam and described group of line cam is integrally formed.
6. Sewing machines as claimed in claim 1 is characterized in that, the cam of close driven wheel one side in described driven gear and described compress cam and the described group of line cam is integrally formed.
7. Sewing machines as claimed in claim 1, it is characterized in that, in output shaft one side's of described stepping motor end, be provided with the phase-detection member of the phase place that is used to detect output shaft, in output shaft the opposing party end of actuator described gear driven mechanism is set.
8. Sewing machines as claimed in claim 1, it is characterized in that, carry out the pressure arm of wobble drive accordingly and dial the line arm with the cam face of described compress cam, support by shared pivot fulcrum with the cam face of described group of line cam carries out wobble drive accordingly.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004096543A JP4492178B2 (en) | 2004-03-29 | 2004-03-29 | sewing machine |
| JP2004096543 | 2004-03-29 | ||
| JP2004-096543 | 2004-03-29 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1676718A true CN1676718A (en) | 2005-10-05 |
| CN1676718B CN1676718B (en) | 2010-09-01 |
Family
ID=35049445
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200510056264 Active CN1676718B (en) | 2004-03-29 | 2005-03-29 | Sewing machine |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4492178B2 (en) |
| CN (1) | CN1676718B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104452123A (en) * | 2013-09-18 | 2015-03-25 | 上海威士机械有限公司 | Top fly sewing machine lower cutter installation structure |
| CN111793909A (en) * | 2019-04-05 | 2020-10-20 | 蛇目缝衣机工业株式会社 | Cloth presser foot up-down driving device and sewing machine with same |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112430920A (en) * | 2020-11-20 | 2021-03-02 | 拓卡奔马机电科技有限公司 | Button sewing machine and lifting, pressing and wire shearing mechanism thereof |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL202646A (en) * | 1954-12-08 | |||
| JPS54104959A (en) * | 1978-02-01 | 1979-08-17 | Aisin Seiki | Device for driving embroidering frame of automatic embroidering machine |
| JPH0333339Y2 (en) * | 1985-09-30 | 1991-07-15 | ||
| JPS62155895A (en) * | 1985-12-27 | 1987-07-10 | アイシン精機株式会社 | Yarn sweeping apparatus of sewing machine |
| JPS63275394A (en) * | 1987-05-02 | 1988-11-14 | ブラザー工業株式会社 | Yarn delivery apparatus of sewing machine |
| CN2175097Y (en) * | 1993-07-23 | 1994-08-24 | 姜恭之 | Machine for making folding single-piece sheet boxes |
| DE4331746C2 (en) * | 1993-09-20 | 1995-11-02 | Pfaff Ag G M | Buttonhole sewing machine with a needle thread cutting and clamping device |
| CN2202760Y (en) * | 1994-11-18 | 1995-07-05 | 周义雄 | Improved structure for button sewing machine |
| JP3897641B2 (en) * | 2002-05-13 | 2007-03-28 | Ｊｕｋｉ株式会社 | sewing machine |
-
2004
- 2004-03-29 JP JP2004096543A patent/JP4492178B2/en not_active Expired - Fee Related
-
2005
- 2005-03-29 CN CN 200510056264 patent/CN1676718B/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104452123A (en) * | 2013-09-18 | 2015-03-25 | 上海威士机械有限公司 | Top fly sewing machine lower cutter installation structure |
| CN111793909A (en) * | 2019-04-05 | 2020-10-20 | 蛇目缝衣机工业株式会社 | Cloth presser foot up-down driving device and sewing machine with same |
| US11255033B2 (en) | 2019-04-05 | 2022-02-22 | Janome Corporation | Presser foot vertical drive device and sewing machine including the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2005278858A (en) | 2005-10-13 |
| JP4492178B2 (en) | 2010-06-30 |
| CN1676718B (en) | 2010-09-01 |
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