CN1757809A - Sewing machine - Google Patents

Sewing machine Download PDF

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Publication number
CN1757809A
CN1757809A CNA2005101084575A CN200510108457A CN1757809A CN 1757809 A CN1757809 A CN 1757809A CN A2005101084575 A CNA2005101084575 A CN A2005101084575A CN 200510108457 A CN200510108457 A CN 200510108457A CN 1757809 A CN1757809 A CN 1757809A
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CN
China
Prior art keywords
rotary speed
speed mode
suture
compress pin
relevant information
Prior art date
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Pending
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CNA2005101084575A
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Chinese (zh)
Inventor
山岸正则
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Juki Corp
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Juki Corp
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Publication date
Application filed by Juki Corp filed Critical Juki Corp
Publication of CN1757809A publication Critical patent/CN1757809A/en
Pending legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B29/00—Pressers; Presser feet
    • D05B29/02—Presser-control devices
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B19/00—Programme-controlled sewing machines
    • D05B19/02—Sewing machines having electronic memory or microprocessor control unit
    • D05B19/12—Sewing machines having electronic memory or microprocessor control unit characterised by control of operation of machine
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B37/00—Devices incorporated in sewing machines for slitting, grooving, or cutting
    • D05B37/04—Cutting devices
    • D05B37/06—Cutting devices with oscillating tools
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B47/00—Needle-thread tensioning devices; Applications of tensometers
    • D05B47/04—Automatically-controlled tensioning devices
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B65/00—Devices for severing the needle or lower thread
    • D05B65/02—Devices for severing the needle or lower thread controlled by the sewing mechanisms
    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B69/00—Driving-gear; Control devices
    • D05B69/30—Details

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Sewing Machines And Sewing (AREA)

Abstract

A seaming machine (10) comprises a cutter (4) for cutting suture line, a cloth press (20) for lifting compress foot (21), a pulse motor (13) driving the two devices, a ROM93 storing multiple rotation speed data (93c) defining the rotation speed of the pulse motor when the cutter cuts suture line, a rotation speed selector (as CPU91) for selecting the rotation speed data generating the drive torque capable of cutting suture line at least from the ROM, according to the suture line thickness input by a controller (98), relative to the drive voltage of a conchoids (81) driving a yarn change mechanism (80), and a drive controller (as CPU91) for controlling the rotary drive of the pulse motor according to the selected rotation speed data. The invention can optimize the rotation speed of the drive motor when cuts suture line to reduce rotation period.

Description

Sewing machines
Technical field
The Sewing machines that the present invention relates to have the driving mechanism of suture and make the cloth presser of compress pin lifting.
Background technology
In the past, known Sewing machines had the cloth presser that makes mobile sword move and cut off the driving mechanism of suture and make the lifting of compress pin and made these mechanisms' operations by CD-ROM drive motor.And known in recent years Sewing machines makes the operation of two mechanisms by the rotation of controlling single CD-ROM drive motor.(for example, with reference to patent documentation 1)
In these Sewing machiness, for example, after making, rotation based on above-mentioned CD-ROM drive motor drives, after carrying out carrying out the cut-out action of suture by shut-off mechanism, carry out the vertical motion of the compress pin of cloth presser, then the compress underfooting is fallen by starting Sewing machines once more.Therefore, from the viewpoint of the service cycle that shortens Sewing machines, the rotary speed of accelerating CD-ROM drive motor becomes important.
Patent documentation 1: the spy opens the 2003-210881 communique
As above-mentioned CD-ROM drive motor, what for example use is impulse motor according to rotary speed regulation driving torque.The driving of this impulse motor is changeed apart from become big when low speed rotation, in addition, diminishes when rotating at a high speed.So, in order to shorten the service cycle of Sewing machines, the preferred rotary speed of accelerating impulse motor, if but accelerate rotary speed, when using thick suture or when using the suture of hard material, the driving that impulse motor arranged is not enough and make the situation that mobile sword can not move reliably, can not carry out the cut-out of suture suitably.
And, usually the compress pin is applied in elastic force downwards, driving opposing elastic force by impulse motor makes its rising, but the situation that has the kind because of the thickness of the cloth made or cloth that this flexible pressing force is downwards changed, therefore when lifting compress pin, if strengthen pressing force, then become big by resisting this pressing force and the driving by the impulse motor torque when the compress pin is risen.So, if to cross high speed driving pulse motor, the driving torque deficiency is arranged then, can not carry out the situation of the lifting action of compress pin suitably.
In addition, in the solution of above-mentioned problem, consider the CD-ROM drive motor that uses high output, but this moment, the problem that has the maximization that brings CD-ROM drive motor and cost to rise can't realize.
Summary of the invention
So, problem of the present invention is: about for the operation parts action that makes Sewing machines, according to rotary speed and the CD-ROM drive motor of regulation driving torque, no matter how sewing condition can move the operation of parts reliably, and, set basis sewing condition and make operation the parts driving torque and the rotary speed in when operation shortens the service cycle of Sewing machines suitably.
Problem of the present invention also is: above-mentioned operation parts are shearing device, no matter how the thickness and the material of suture can carry out tangent line reliably, and, rotary speed when suture is cut off is corresponding to the thickness of suture and material etc., set driving torque and rotary speed suitably, shorten the service cycle of tangent line.
Problem of the present invention is again: above-mentioned operation parts are compress pin elevating mechanism, no matter how the size of the compress pressure of compress pin can both carry out the lifting of compress pin reliably, and, compress pressure according to the compress pin is set driving torque and rotary speed suitably, shortens the service cycle of compress pin elevating mechanism.
In order to solve above-mentioned problem, the invention of technical scheme 1 record, it is a kind of Sewing machines, comprise the travelling mechanism that independently is arranged on the Sewing machines and can moves and be connected and come the CD-ROM drive motor of regulation driving torque according to rotary speed with described travelling mechanism, it is characterized in that, possess: rotary speed mode storing mechanism, it is used to store a plurality of rotary speed modes, described rotary speed mode is defined as in the rotary speed of described CD-ROM drive motor in described when operation of described travelling mechanism at least; Sewing condition information input mechanism, it is used to import the sewing condition information that is associated with the action of described travelling mechanism; The selection mechanism of rotary speed mode, it is based on the described sewing condition information by the input of described sewing condition mechanism, the rotary speed mode of the driving torque during from action that described rotary speed mode storing mechanism is selected to produce described travelling mechanism; Drive controlling mechanism, it is based on the described rotary speed mode of selecting by described rotary speed mode, and the rotation of controlling described CD-ROM drive motor drives.
At this, so-called sewing condition information is meant: the kind of suture and thickness, or the information that is associated with the difficulty of the cut-out of the suture that is undertaken by shut-off mechanism etc., perhaps, the thickness of the cloth of making and kind, or the information that is associated with pressing force above or below the compress pin.
And, the invention of technical scheme 2 records, it is a kind of Sewing machines, comprise the shut-off mechanism that is used to cut off suture, have and always bear upward or the compress pin of the elastic force of below and the cloth presser of this compress pin of liftable, so that shut-off mechanism cuts off the single CD-ROM drive motor that the mode of moving and making cloth presser carry out compress pin lifting action connects and stipulate according to rotary speed its driving torque, it is characterized in that, possess: rotary speed mode storing mechanism, it is used to store a plurality of rotary speed modes, this rotary speed mode, the rotary speed of the described CD-ROM drive motor the when rotary speed of the described CD-ROM drive motor when the described suture of having stipulated described shut-off mechanism cuts off and the compress pin lifting of described cloth presser; Cut off the relevant information input mechanism, it is used to import the suture that is associated with the cut-out of the described shut-off mechanism of described suture and cuts off relevant information; Compress pin relevant information input mechanism, it is used to import the compress pin relevant information that is associated with the compress pin pressing force of described cloth presser; The selection mechanism of rotary speed mode, it cuts off relevant information based on the described described suture that is transfused to, select to produce the rotary speed mode of the cut driving torque of described suture from described rotary speed mode storing mechanism, simultaneously, based on the described compress pin relevant information that is transfused to, select the driving torque of described compress pin rising from described rotary speed mode storing mechanism; Drive controlling mechanism, it controls the rotation driving of described CD-ROM drive motor based on by the selected described rotary speed mode of described rotary speed mode selection mechanism.
And, the invention of technical scheme 3, it is a kind of Sewing machines, comprise and be used to cut off the shut-off mechanism of suture and be connected on the shut-off mechanism and stipulate the CD-ROM drive motor of its driving torque according to rotary speed, it is characterized in that, possess: rotary speed mode storing mechanism, the rotary speed mode of the rotary speed of the described CD-ROM drive motor when it is used to store a plurality of described sutures of having stipulated described shut-off mechanism and cuts off; Cut off the relevant information input mechanism, it is used to import the suture that is associated with the cut-out of the described shut-off mechanism of described suture and cuts off relevant information; The selection mechanism of rotary speed mode, it cuts off relevant information based on the described suture that is transfused to by described cut-out relevant information input mechanism, selects to produce the rotary speed mode of the driving torque of cutting off described suture at least from described rotary speed mode storing mechanism; Drive controlling mechanism, it is based on the selecteed described rotary speed mode by the selection mechanism of described rotary speed mode, and the rotation of controlling described CD-ROM drive motor drives.
At this, suture cuts off relevant information and is meant: the information that is associated with the difficulty of the cut-out of the suture that is undertaken by shut-off mechanism etc. particularly, is meant the thickness of suture and material etc.
And, the invention of technical scheme 4 is Sewing machiness that technical scheme 3 is put down in writing, it is characterized in that, possesses the yarn change mechanism of described suture being paid the tension force of regulation, with the line transfer driving mechanism that drives described yarn change mechanism, described cut-out relevant information input mechanism, possesses the driving voltage input mechanism, this driving voltage input mechanism, be used to import the driving voltage of the described line transfer driving mechanism that the thickness according to described suture changes, the selection mechanism of described rotary speed mode, according to the described driving voltage that is transfused to by described driving voltage input mechanism, select described rotary speed mode from described rotary speed mode storing mechanism.
And, the invention of technical scheme 5 records, it is a kind of Sewing machines, comprise have always bear upward or the compress pin of the elastic force of below and cloth presser that can this compress pin of lifting with so that cloth presser carries out the CD-ROM drive motor that the mode of compress pin lifting operation is connected and stipulates according to rotary speed its driving torque, it is characterized in that, possess: rotary speed mode storing mechanism, the rotary speed mode of the rotary speed of the described CD-ROM drive motor when it is used to store a plurality of compress pin lifting of having stipulated described cloth presser; Compress pin relevant information input mechanism, it is used to import the compress pin relevant information that is associated with the compress pin climbing power of described cloth presser; The selection mechanism of rotary speed mode, it selects described compress pin by the driving torque of lifting based on the described compress pin relevant information that is transfused to from described rotary speed mode storing mechanism; Drive controlling mechanism, it is based on the selecteed described rotary speed mode by the selection mechanism of described rotary speed mode, and the rotation of controlling described CD-ROM drive motor drives.
(invention effect)
Invention according to technical scheme 1 record, in rotary speed mode storing mechanism, a plurality of rotary speed modes of the rotary speed of the CD-ROM drive motor when the travelling mechanism operation has been stipulated in storage, and, can select to produce the rotary speed mode of driving torque from rotary speed mode storing mechanism based on the sewing condition information that is transfused to by sewing condition relevant information input mechanism.Thus,, the rotation driving of CD-ROM drive motor can be carried out, the service cycle of Sewing machines can be shortened according to the suitable rotary speed that constitutes suitable driving torque according to sewing conditions such as suture that is used to make or compress pin climbing powers.
Invention according to technical scheme 2 records, in rotary speed mode storing mechanism, a plurality of rotary speed modes of the rotary speed of the CD-ROM drive motor when storage has been stipulated the shut-off mechanism of suture and made the operation of cloth presser of compress pin lifting, cut off relevant information or compress pin relevant information based on the suture of being imported by sewing condition relevant information input mechanism, can select to produce the rotary speed mode of driving torque from rotary speed mode storing mechanism.Thus, according to suture that is used to make or compress pin pressing force, corresponding to period separately, with rotary speed as suitable driving torque, the rotation that can carry out CD-ROM drive motor drives, the driving torque of the CD-ROM drive motor in the time of can obtaining the cut-out of suitable suture or the lifting of compress pin, simultaneously, in the time of can shortening tangent line and the service cycle of the Sewing machines the during lifting of compress pin.
Invention according to technical scheme 3 records, in rotary speed mode storing mechanism, a plurality of rotary speed modes of the rotary speed of the CD-ROM drive motor when storage has stipulated that the suture that undertaken by shut-off mechanism cuts off, cut off relevant information based on the suture that is associated with the cut-out of the shut-off mechanism of suture by cutting off the input of relevant information input mechanism, by the selection mechanism of rotary speed mode, can select to produce the rotary speed mode of the cut driving torque of suture from rotary speed mode storing mechanism.Thus, according to the suture that is used to make, according to the rotary speed that the driving torque of its suture takes place can cut off at least when the cut-out of suture, the rotation that can carry out CD-ROM drive motor drives.That is, the driving torque of the CD-ROM drive motor in the time of can obtaining suitable suture cut-out simultaneously, can obtain suitable rotary speed, this service cycle in the time of can shortening tangent line.
Invention according to technical scheme 4 records, because basis is selected the rotary speed mode to the driving voltage of the driving mechanism of the line transfer driving mechanism of setting line tension, so, by the thickness according to suture the rotary speed of the driving torque of its suture takes place can cut off at least, the rotation that can carry out CD-ROM drive motor when suture cuts off drives.So, the driving torque of the CD-ROM drive motor in the time of can obtaining the cut-out of suitable suture, simultaneously, owing to can shorten the service cycle of the cut-out of suture in the hope of the optimization of rotary speed.
Invention according to technical scheme 5 records, in rotary speed mode storing mechanism, a plurality of rotary speed modes of the rotary speed of the CD-ROM drive motor the when lifting of compress pin has been stipulated in storage, based on the compress pin relevant information that is associated with compress pin pressing force, by the selection mechanism of rotary speed mode, can select to take place the rotary speed mode of the driving torque that the compress pin can lifting from rotary speed mode storing mechanism.Thus, according to producing the rotary speed of the driving torque of lifting compress pin reliably, the rotation that can carry out CD-ROM drive motor drives.That is, driving torque and rotary speed in the time of can obtaining suitable compress pin lifting, this service cycle in the time of can shortening the lifting of compress pin.
Description of drawings
Fig. 1 is the stereogram of the main composition of the expression only Sewing machines that is suitable for embodiments of the invention.
Fig. 2 is from observing the stereogram of main composition of the only Sewing machines of Fig. 1 with the different directions of Fig. 1.
Fig. 3 is the stereogram that the downside of the needle plate from the Sewing machines that is arranged on Fig. 1 is observed shut-off mechanism.
Fig. 4 is arranged on the sequential chart of lifting action of the compress pin of the cut-out action of the shut-off mechanism on the Sewing machines of Fig. 1 and cloth presser.
Fig. 5 is the stereogram that expression is arranged on the yarn change mechanism on the Sewing machines of Fig. 1.
Fig. 6 is the block diagram of wanting portion to constitute of the Sewing machines of presentation graphs 1.
Fig. 7 is the sequential chart of an example of operation of rotation drive controlling of impulse motor of the Sewing machines of presentation graphs 1.
Fig. 8 is the figure of an example of the corresponding relation of the rotary speed of impulse motor of rotation drive controlling of impulse motor of presentation graphs 7 and the anglec of rotation.
Fig. 9 is the figure of an example of the corresponding relation of the rotary speed of impulse motor of rotation drive controlling of impulse motor of presentation graphs 7 and the anglec of rotation.
Figure 10 is the block diagram of wanting portion to constitute of the Sewing machines of expression variation 2.
Among the figure: the 10-Sewing machines, 13-impulse motor (CD-ROM drive motor), the 20-cloth presser, 21-compress pin, the 40-shut-off mechanism, the 80-yarn change mechanism, 81-solenoid (line transfer driving mechanism), 91-CPU (rotary speed mode selection mechanism, drive controlling mechanism, line thickness information is obtained mechanism), 93,193-ROM (rotary speed mode storing mechanism, the tailoring pattern storing mechanism), 93c, 193d-rotary speed mode data, the 98-controller is (with cut-out relevant information input mechanism, the driving voltage input mechanism, line thickness information input mechanism, tailoring pattern indicating mechanism)
The specific embodiment
(integral body of inventive embodiment constitutes)
According to Fig. 1～Figure 10 embodiments of the invention are at length described below.Fig. 1 is the stereogram of the main formation of the expression only Sewing machines 10 that is suitable for inventive embodiment.Fig. 2 be from shown in the different direction of Fig. 1 observe the only stereogram of the main composition of Sewing machines 10.
Sewing machines 10 possesses and is used to keep or hold the not shown Sewing machines casing that each constitutes, this Sewing machines casing possess the lower position of the integral body that is positioned at Sewing machines 10 base plate, be set at the vertical main body section, the chain-drive section that is provided with from the upper end and the equidirectional extension of base plate of vertical main body section of top, an end of the length direction of Sewing machines base plate.In the following description, Sewing machines 10 is being placed under the state of horizontal plane, the direction parallel with the length direction of level and base plate is made as Y direction, level and the direction vertical with Y direction are made as X-direction, the direction vertical with X-axis and Y direction is made as Z-direction.
Sewing machines 10 possesses: cloth presser 20, tangent mechanism 40, impulse motor 13, Poewr transmission mechanism 50, yarn change mechanism 80 and control part 90; Above-mentioned cloth presser 20 liftably supports and can drop on the needle plate 11, is used to keep the compress pin 21 as the cloth of sewn object; Above-mentioned tangent mechanism 40 is positioned at the downside of needle plate 11, is used for cutting off upper thread and bottom line making the back; Above-mentioned impulse motor 13, as single drive source, the cut-out action of the lifting action of the compress pin 21 of driving cloth presser 20 and shut-off mechanism 40; Above-mentioned Poewr transmission mechanism 50 is paid the rotary driving force of impulse motor 13 to cloth presser 20 and tangent mechanism 40; Above-mentioned yarn change mechanism 80 is paid the tension force (with reference to Fig. 5) of regulation to suture; Above-mentioned control part 90 is controlled (with reference to Fig. 6) to being provided in the solenoid 81 on the yarn change mechanism 80 and the driving of impulse motor 13.
And, Sewing machines 10 possess keep eedle and the up-down mechanism that moves up and down, at the rotary shuttle mechanism that is used for bottom line is wrapped in the upper thread that passes eedle below the needle plate, make required various mechanisms by cloth presser 20 mobile compress pin 21 and cloth travel mechanism etc. of at random carrying out needle downing position above needle plate 11, but because these are known mechanisms, so the diagram of omission and explanation.
(cloth presser)
The cloth presser 20 that constitutes travelling mechanism possesses: its base end part remains in the cloth travel mechanism and its leading section side is positioned at along the bracing frame 22 of the optional position of X-Y plane; The downside of compress pin 21 and and compress pin 21 between keep the lower plate 23 of cloth; Be straightened the presser feet holding member 24 of an end that is arranged on compress pin 21; Be set at the leading section of bracing frame 22 and liftably support the lead-frame 25 of compress pin 21 by holding member 24; Can joltily be supported on the bracing frame 22 and presser feet holding member 24 be paid a pair of jack back 26 of the locomotivity of lifting by the portion at one end of shaking; By the Sewing machines casing can move up and down the supported pressing plate 27 in ground; Can joltily be supported on the swing part that contacts below 28 of the top of bracing frame 22 and an end and pressing plate 27; The other end that makes the other end of swing part 28 and each jack back 26 is along up and down and at first and the second connecting rod body 29,30 of identical direction interlock.
Compress pin 21 is OBL frameworks, and in the inboard on four limits bigger opening is arranged.To the cloth of the inboard that remains on this peristome pin that falls, and make.
Corresponding, lower plate 23 also have with compress pin 21 with the big OBL frame portion of degree, and have and compress pin 21 same big openings.And lower plate 23 has parallel with minor face from the edge, position of the centre that is equivalent to its long limit and the portion that extends that extend, and at this leading section that extends portion lower plate 23 is remained in the cloth travel mechanism.And OBL frame portion side is positioned in along on the optional position of X-Y plane with the leading section of bracing frame 22.
Bracing frame 22, be configured in the Sewing machines base plate above, as mentioned above, its base end part is maintained in the cloth travel mechanism, its leading section is to extend setting towards the mode in the place ahead with respect to its base end part gradually from the top.In addition, the length direction of this bracing frame 22 (extension is provided with direction) is set on the Sewing machines base plate along Y direction.
Presser feet holding member 24 is formed roughly L font, and the one end is fixedly connected on the compress pin 21, and its other end is supported on the lead-frame 25.
Lead-frame 25 is fixedly installed to the leading section of bracing frame 22, and possesses the guiding groove of the other end of supporting presser feet holding member 24 slidably.This guiding groove is installed in lead-frame 25 on the bracing frame 22 in the mode along Z-direction (above-below direction).Thus, compress pin 21 can carry out lifting action with respect to bracing frame 22.
Each jack back 26 is provided with in the mode of clamping bracing frame 22, is roughly supporting on 22 along being supported under the state of Y direction respectively.And, each jack back 26, at its length direction pars intermedia, with the axle along X-direction is that the center can joltily be supported on the bracing frame 22, carrying out its end of shaking is inserted in the through hole, this through hole is set on the other end of presser feet holding member 24, and this presser feet holding member 24 is supported on the lead-frame 25.So,, also move up and down by presser feet holding member 24 compress pin 21 when moving up and down in the one end by shaking of jack back 26.In addition, in the axle support section of each jack back 26, by the not shown helical spring of being turned round, always the direction that is moved upward at compress pin 21 presses each jack back 26.
Pressing plate 27 is OBL flat boards, and possesses the back shaft 27a that the setting fixed to central vertical in the above is provided with.This back shaft 27a is the pole shape, and passes the metal bearing cylindraceous 32 that is fixedly mounted on the Sewing machines casing, by this back shaft 27a, liftably supports pressing plate 27 along Z-direction.
In addition, back shaft 27a, its upper end is outstanding upward from metal bearing 12, in the upper end of this back shaft 27a, in its radial direction both sides pin 27b is set.Each sells the input that 27b is used for engaging and bearing with Poewr transmission mechanism 40 pressing force downwards.
Swing part 28 is along the top that is set at bracing frame 22 under the state of Y direction.At the length direction pars intermedia of swing part 28, be the center with axle along X-direction, can joltily swing part 28 be supported on the bracing frame 22, to shake by it, an end that moves up and down becomes with the following central portion of pressing plate 27 and contacts configuration.
On the other hand, the other end of swing part 28 is connected the other end (with the end of compress pin 21 opposition sides) of each jack back 26 by 2 connecting rod bodies 29,30.Because each jack back 26, by being turned round helical spring its other end is applied downwards power, so, by 2 connecting rod bodies 29,30, the other end of swing part 28 is also applied downwards power.Thus, by being turned round helical spring elasticity one end of swing part 28 is applied upward power, its result always can keep the state that pushes pressing plate 27 upward.
In addition, can joltily support above-mentioned first connecting rod body 29 by bracing frame 22, second connecting rod body 30 connects the other end of shaking end and swing part 28 of first connecting rod body 29.And, by extension spring 31, to be connected the end of shaking of first connecting rod body 29 with the mode of the other end crimping of jack back 26.This extension spring 31 has than the above-mentioned stronger power of helical spring of being turned round, turned round helical spring antagonism with this and when the shaking the end and shake upward of first connecting rod body 29, the other end of jack back 26 is also stretched upward, and thus, compress pin 21 becomes the decline state.
Cloth presser 20, usually, its jack back 26 is applied power by turning round helical spring elastic force to the direction that the top, edge promotes compress pin 21.That is, only otherwise pay external force, just can keep the released state of compress pin 21 and lower plate 23.
And, when pushing the back shaft 27a of pressing plate 27 downwards,, rise on the decline of an end of swing part 28 and the other end by the elastic force of extension spring 31 by Poewr transmission mechanism 50, by each linkage component 29,30, also promote the other end of jack back 26 upward.Thus, 21 opposings of compress pin are turned round helical spring elastic force and are pushed downwards by the elastic force of extension spring 31, become the pressure status that keeps regulation between compress pin 21 and lower plate 23, on cloth.
In addition, by the slotted hole B of linkage of change Fig. 1 and the installation site of screw C, the distance of shaking the end of variable jack back 26 ends and first connecting rod body 29, thus, the elastic force of above-mentioned extension spring 31 can be changed, that is, pressing force can be changed to the below of compress pin 21.Though not shown, at the length direction of slotted hole B, form scale so that the installation site of identification screw C.
(shut-off mechanism)
Constitute the shut-off mechanism 40 of travelling mechanism, in the Sewing machines base plate, be configured in the downside of needle plate 11.Fig. 3 is a stereogram of observing shut-off mechanism 40 from the downside of needle plate 11.In Fig. 3, symbol 11A is illustrated in the pin hole that runs through setting on the needle plate 11.
Shut-off mechanism 40 possesses: near pin hole 11A towards point of a knife and be fixedly installed to dead knife 41 below the needle plate 11, by being rotated action and cutting off the mobile cutter 42 of upper thread and bottom line with dead knife 41 clampings, paid the walking bar rod body 43 of the reciprocal power of shaking by Poewr transmission mechanism 50, can joltily supportedly be installed in the adjustment connecting rod body 44 of the following side of needle plate 11 with this walking bar rod body 43, with be connected mobile cutter 42 and adjust connecting rod body 44 be connected connecting rod body 45.
Mobile cutter 42 is the following side that back shaft is supported on needle plate 11 rotationally with segmentation screw 46, can be configured in by the mode below the pin hole 11A when it back and forth rotates below the needle plate 11.
Make finish after, from the upper thread supply source upper thread is passed eedle at once, and, upper thread by needle plate 11 pin hole 11A and cooperate with rotary shuttle mechanism, turn back and made on cloth by pin hole 11A once more.And bottom line is extracted out from the bobbin as the bottom line supply source of the inboard of rotating shuttle, and twines with the upper thread that turns back to the below of needle plate 11, passes pin hole 11A and is made on cloth.That is, be in following state: under pin hole 11A, have three lines of upper thread, the upper thread from the rotating shuttle to the cloth and the bottom line from the rotating shuttle to the cloth from the eedle to the rotating shuttle.
Under this state, for remove sewing finishing from Sewing machines 10 cloth, need to cut off bottom line and a side upper thread only.Especially for upper thread,, need only cut off the upper thread from the rotating shuttle to the cloth in order to ensure remaining length.
That is, mobile cutter 42 need select and separately pin hole 11A under three lines in two of regulation and cut off.On the other hand, three lines, by the configuration of rotating shuttle, the position under pin hole 11A, it puts in order normally certain.Thus, rotating among the Tf as advancing of the outlet of back and forth rotating, the mode that its pointed section 42a rolls to the inboard of center of rotation with the upper thread that only will not cut off is selected and is separated, carry out so-called suture and differentiate action (with reference to Fig. 8 and Fig. 9), rotating among the Tb as retreating of outlet, catching by pointed section 42b and roll remaining two, simultaneously, point of a knife to dead knife 41 transports, and cuts off.
Walking bar rod body 43 is supported on below the needle plate 11 by segmentation screw 47 rotationally at its length direction pars intermedia.One end of walking bar rod body 43 is connected an end of the dynamic transfering rod described later 54 of Poewr transmission mechanism 50, moves by the advance and retreat along the Y direction of this dynamic transfering rod 54 and shakes walking bar rod body 43.
In the other end of walking bar rod body 43, form along being the slotted hole 43a of the circular arc direction at center with segmentation screw 47, in this slotted hole 43a, insert hold-down screw 48 and connect follower link body 44 and walking bar rod body 43.
Follower link body 44, its length direction one end and walking bar rod body 43 together by segmentation screw 47 be supported on rotationally needle plate 11 below, and,, connect by slotted hole 43a with respect to walking bar rod body 43 by hold-down screw 48 at the pars intermedia of length direction.And length direction the other end of follower link body 44 is connected an end that connects connecting rod body 45.And the other end that connects connecting rod body 45 is connected on the mobile cutter 42.
Thus, when fastening hold-down screw 48, follower link body 44 and walking bar rod body 43 become one and shake, according to along the advancing (moving direction F) or retreat mobile (moving direction B) of the Y direction of dynamic transfering rod 54, mobile cutter 41 is advanced to rotate Tf or retreat from pin hole 11A side towards pin hole 11A rotate Tb by transmitting connecting rod body 45.
In addition, by unclamping hold-down screw 48, follower link body 44, can be independent of walking bar rod body 43 in the length range of slotted hole 43a individually shakes, by suitably carrying out relative angular adjustment and fastening once more hold-down screw 48, can fix in position and go up for walking bar rod body 43.
Because walking bar rod body 43 is connected on the dynamic transfering rod 54, so, to the stroke that advances or retreat that should dynamic transfering rod 54, only in certain angular range, shake, but because follower link body 44 can carry out angular adjustment by relative walking bar rod body 43 by hold-down screw 48 with slotted hole 43a, though the angular range that shakes does not change, can regulate the starting position and the end position of rotation.Thus, the starting position of the rotation during according to the cut-out that can regulate mobile cutter 42 and end position (in fact owing to back and forth rotate the folded back position of saying so closely) can be regulated mobile cutter 42 by the time point of pin hole 11A, the time point that promptly cuts off.
(Poewr transmission mechanism)
Poewr transmission mechanism 50, shown in Fig. 1 and 2, possess: first and second rotating cam 51 that is driven in rotation simultaneously by impulse motor 13,52, and then first rotating cam 51 turns round first roller part 53 that move around the doing of output shaft 13a of impulse motor 13 on every side, carry out the dynamic transfering rod 54 of the transmission of power that in shut-off mechanism 40, is used to cut off, the other end was connected first lever part 55 on the dynamic transfering rod 54 when at one end portion supported first roller part 53, and then second rotating cam 52 turns round second roller part 56 that move around the doing of output shaft 13a of impulse motor 13 on every side, at one end portion supports second roller part 56 and second lever part 57 that shakes is moved in revolution that should second roller part 56, the follower link body 59 that connects and shake with second lever part 57 by hold-down screw 58, by shaking a pair of arm member 60 that action presses down the pin 27b of cloth presser 20,61, motive force transfer 62 with the strip that shakes end and arm member 60 that is connected follower link body 59.
First roller part 53 is configured in the guiding groove as first rotating cam 51 of grooved cam, and the rotation of corresponding first rotating cam 51 is moved along the revolution that groove carries out around the output shaft 13a of impulse motor 13.
First lever part 55 in the vertical main body section of Sewing machines,, can joltily be supported on the Sewing machines casing by axle in its length direction centre position along under the state of Z-direction roughly at its length direction.This first lever part 55 supports by the axle along X-direction, and first roller part 53 that is positioned at an end moves along Y direction roughly by gyration.Thus, the moving of corresponding first roller part 53, first lever part 55 shakes, and the dynamic transfering rod 54 that is connected its other end is paid roughly advance and retreat locomotivity along Y direction.
And, on first lever part 55, being provided with extension spring 63, this extension spring 63 always makes pivot that first roller part 53 is crimped on first rotating cam 51 then.
Dynamic transfering rod 54, in the Sewing machines base plate, length direction is with along the state configuration of Y direction roughly.Therefore, by shaking of first lever part 55, dynamic transfering rod 54 can carry out moving along the advance and retreat of the length direction of self.Advance mobile (the moving direction F) mobile according to these advance and retreat, mobile link body 43 by shut-off mechanism 40, mobile cutter 42 is advanced rotate Tf (for the rotation of selecting according to the upper thread that only is involved in a side), by mobile retreat mobile (the moving direction B) that advance and retreat, mobile cutter 42 is retreated rotate Tb (for the upper thread of catching and cutting off the opposing party and the rotation of bottom line).
In addition, near dynamic transfering rod 54, be provided with and be used to detect the sensor 64 that this dynamic transfering rod 54 is in progressive position or is in going-back position.
All above the cloth presser 20 and be fixedly connected at simultaneously on the back shaft 66, this back shaft 66 rotatably is supported on the Sewing machines casing for 2 arm members 60,61, its base end part, and 2 arm members 60,61 and back shaft 66 become one and shake.
In addition, each arm member 60,61 shake the end, be the radius of a circle direction at center with back shaft 66, extend along Y direction and be provided with, and be positioned at the top of respectively selling 27b that the pressing plate 27 that makes above-mentioned cloth presser 20 moves up and down.That is, sell 27b with each by shaking of each arm member 60,61 when shaking of end descends and contact, and, carry out pushing of cloth by compress pin 21 by pressing plate 27 is descended.
One side's arm member 60 with pin 27b butt joint to shake the end different, import its input chip 60a that shakes driving force and be the radius centered direction with back shaft 66 and extending setting along Z-direction.On this input chip 60a, connect an end of motive force transfer 62, and this input chip 60a is shaken along Y direction.Thus, each arm member 60,61 integral body is shaken.
Above-mentioned motive force transfer 62 is a strip, and disposes along Y direction in head of sewing machine portion.As mentioned above, motive force transfer 62, its the other end is connected the end of shaking of follower link body 59, so, by shaking of follower link body 59, motive force transfer 62 is advanced mobile (moving direction f) and is retreated mobile (moving direction b) along its length direction, and each arm member 60,61 is shaken.That is, retreating when mobile, each arm member 60,61 shakes along the direction that presses down the pin 27b of cloth presser 20, presses down compress pin 21.In addition, advancing when mobile, each arm member 60,61 shakes along the direction that the pin 27b from cloth presser 20 leaves, and is moved upward compress pin 21 from pressed status.
Second roller part 56 with the state configuration of docking with the periphery of second rotating cam 52, carries out the revolution on every side of the output shaft 13a of impulse motor 13 and moves corresponding to the rotation of second rotating cam 52.In addition, this second roller part 56 is paid pulling force by the extension spring 70 that is set on the follower link body 59, and it is always docked with the periphery of second roller part 52.
Second lever part 57 is formed roughly L font, and can joltily be supported on the Sewing machines casing by axle by back shaft 65 at its bend.This second lever part 57 is supported by the axle along X-direction, when second roller part 56 that is positioned at an end carries out when mobile along Z-direction roughly by gyration, and the mode bending of its other end to move along Y direction roughly.
Then, first and second rotating cam 51,52 is illustrated.Fig. 4 is the sequential chart by the lifting action of the compress pin 21 of the thread cutting action of the shut-off mechanism 40 of each rotating cam 51,52 driving and cloth presser 20.In Fig. 4, the line of top is represented the action of cloth presser 20, and the longitudinal axis is represented the height of compress pin 21.In addition, in Fig. 4, the line of below is represented the action of shut-off mechanism 40, the longitudinal axis represent the to march forward angle of rotation tolerance of rotation direction.
In addition, in Fig. 4, the anglec of rotation of transverse axis indicating impulse motor 13 tolerance, Fig. 4 represents one week amount, and plays expression by the angle that is about to before beginning of cutting off action.
First rotating cam 51 is grooved cam as mentioned above, this first rotating cam 51, along being locus guiding first roller part 53 of the circumference at center with the output shaft 13a of impulse motor 13, simultaneously, on its part towards the inboard of circle along low-lying track channeling conduct.That is, form the guiding groove of first rotating cam 51 according to heart shape roughly.
This first rotating cam 51 does not carry out shaking of first lever part 55 in the interval along circumference, and only shakes low-lying interval (below, be called the concavity interval).
The concavity interval of this first rotating cam 51 changes lentamente between circumference area, gradually near the output shaft 13a of impulse motor 13, and in the middle in this concavity interval near output shaft 13a.And, after herein, separating, get back between circumference area gradually with output shaft 13a.
Shape according to this first rotating cam 51, when first roller part 53 arrives the concavity interval, be arrive position near output shaft (below, be called the bottom), it is mobile that first lever part 55 advances dynamic transfering rod 54, the mobile cutter 42 of shut-off mechanism 40 advanced rotate Tf.Thus, mobile cutter 42 is only selected the upper thread (carry out line and differentiate action) of catching a side who hangs down from pin hole 11A.
And then after first roller part 53 passed through the bottom in concavity interval, to arriving between circumference area, it is mobile that first lever part 55 retreats dynamic transfering rod 54, makes the mobile cutter 42 of shut-off mechanism 40 retreat rotation Tr simultaneously.Thus, mobile cutter 42 is caught the opposing party's who hangs down from pin hole 11A upper thread and bottom line, and moves to dead knife 41 and cut off.
Second rotating cam 52 possesses following function: second roller part 56 is docked on its outer peripheral face and corresponding to peripheral shape moves it, thus, amount of movement according to the distance of the output shaft 13a of the impulse motor 13 of the position of respective distances outer peripheral face shakes second lever part 57.
This second rotating cam 52, identical with first rotating cam 51, be installed on the output shaft 13a of impulse motor 13, by rotating simultaneously, realize cutting off the interlock of action and compress foot-propelled work with first rotating cam 51.
Particularly, as shown in Figure 4, to set the peripheral shape of second rotating cam 52 in the mode of carrying out line differentiation action and line cut-out action back compress pin 21 risings by first rotating cam, 51 shut-off mechanisms 40.Promptly, second rotating cam 52, with output shaft 13a is radius centered, constitute by big young waiter in a wineshop or an inn interval, form and be provided with in back (direction of rotation downstream) from the big interval of radius to little section boundaries interval followed by the concavity interval of first rotating cam 51 of interlock, the part of the roughly half cycle of the interval continuity impulse motor 13 that radius is little, thereafter, through the shape of boundary interval to the big interval transfer of radius.
Shape according to this second shape cam 52, when shut-off mechanism 40 does not also carry out the differentiation of line and cuts off, second roller part 56 is docked at the big interval of radius, moves motive force transfer 62 by second lever part 57 and the follower link body 59 direction b that draws back.So, 60,61 times pad 27b of each arm member, cloth presser 20 is kept the state that presses down compress pin 21.
And, by first rotating cam 51, after the cut-out action is finished, at once, second roller part 56 by from the big interval of radius to little section boundaries interval, second lever part 57 and walking bar rod body 59 shake and motive force transfer 62 forward direction f are moved.So each arm member 60,61 rotates upward, remove pressing down of pin 27b, cloth presser 20 rises compress pin 21, removes the compress state.
(yarn change mechanism)
Then, yarn change mechanism 80 is illustrated with reference to accompanying drawing 5.At this, Fig. 5 represents the stereogram of yarn change mechanism 80.
Yarn change mechanism 80 is fixed on the Sewing machines casing, particularly, as shown in Figure 5, possesses: as the solenoid (line transfer driving mechanism) 81 of the drive source of this yarn change mechanism 80; The bar 82 that moves along Y direction along with the advance and retreat of the plunger 81a on the magnet that is connected this solenoid 81; Along with make movable plate portion 831 move and make line transfer dish portion 83 along X-direction with respect to moving of the Y direction of bar 82 to the pressing force change of the suture that is held by these fixed disk portions 832 and movable plate portion 831 with respect to fixed disk portion 832.
Solenoid 81 side ends of bar 82 are supported on the solenoid side connecting rod 821 on the assigned position of Sewing machines casing by the rotatable free earth's axis of an end, be connected on the plunger 81a.And the side of the plunger 81a of connection solenoid side connecting rod 821 becomes by being turned round helical spring (diagram is omitted) always is pressed against line transfer dish portion 83 1 sides along the Y direction state.
On the other hand, the end of line transfer dish portion 83 sides of bar 82 is connected on the end of overlooking the dish portion side connecting rod 822 that roughly is the L font.
Dish portion side connecting rod 822, its bend is rotatable freely to be supported on the assigned position of Sewing machines casing by axle, end at the opposition side of a side of connecting rod 82 is connected with the other end that an end is fixedly connected at the pin (diagram is omitted) in the movable plate portion 831.Pin, the inside of the fixed disk portion 832 of assigned position that for example can be by being fixed on the Sewing machines casing also is connected on the assigned position of movable plate portion 831.
Fixed disk portion 832 and movable plate portion 831 are provided with the fixed disk 832a and the movable plate 831a that are used at separately opposed faces side clamping suture.
Then, the method for paying to the tension force of the suture of yarn change mechanism 80 is illustrated.
At first, be in the state of disconnection at the power supply of Sewing machines 10, by being turned round helical spring elastic force, making solenoid side connecting rod 821 can be that direction is (for example in accordance with regulations at the center with the axle along Z-direction, rotate counterclockwise), with this, along Y direction at line transfer dish portion 83 side pressure rods 82.Thereafter, be center direction (for example, counterclockwise) rotation in accordance with regulations by dish portion side connecting rod 822 with axle along Z-direction, movable plate portion 831 is moved in the mode of separating with fixed disk portion 832 along X-direction.Its result, it is big that the fixed disk 832a of fixed disk portion 832 and movable plate portion 831 and the gap between the movable plate 831a become, thereby reduced tension force that the suture that is supported in this gap is paid.
On the other hand, when the power supply of Sewing machines is switched on, when driving solenoid 81 under the control of control part 90, makes solenoid side connecting rod 821 be middle mind-set and prescribed direction opposite direction (for example, clockwise) rotation with the axle along Z-direction, thus, bar 82 is drawn solenoid 81 sides along Y direction.So, by make dish portion side connecting rod 822 with along the axle of Z-direction for the opposite direction of middle mind-set and prescribed direction (for example, rotation clockwise), movable plate portion 831 is to along X-direction and to rotate with fixed disk portion 832 approaching mode.Its result, the gap smaller between fixed disk 832a and the movable plate 831a has increased the tension force that the suture that is supported in this gap is paid.
(control part)
Then, with reference to Fig. 6 control part 90 is illustrated.At this, Fig. 6 represents the block diagram of main formation of Sewing machines.
As shown in Figure 6, control part 90 is by formations such as CPU (Central Processing Unit) 91, RAM (RandomAccess Memory) 92, ROM (Read Only Memory) 93, interface (I/F) 94, motor of sewing machine drive circuit 95, impulse motor drive circuit 96, solenoid drive circuits 97.
CPU91, the appointed program in the various programs of working region expansion from be stored in ROM93 in RAM92, and implementation is according to the various processing of this program.
RAM92 is made of for example volatile semiconductor memory component, and possesses storage area, this storage area be used for temporarily storing the working region of CPU91 and read from ROM93, by feasible various programs of Sewing machines or control data etc.
ROM93 is for example programmable semiconductor memory component, stores as the various functional programs of the Sewing machines of carrying out by CPU91 or control data etc.Particularly, ROM93 is storing rotary speed mode option program 93a, drive controlling program 93b etc.
Rotary speed mode option program 93a (selection mechanism of rotary speed mode) is to be used for following program: at CPU91, as the selection mechanism of rotary speed mode, based on the thickness (suture cut-out relevant information) of the corresponding suture of driving voltage of the solenoid 81 that is transfused to switch (sewing condition information input mechanism) or the pressing force (compress pin relevant information) of compress pin 21 by controller 98 (driving voltage input mechanism), realization is from the interior function of selecting the processing of rotary speed mode data 93c of ROM93 (rotary speed mode storing mechanism), and these rotary speed mode data 93c is used for producing the driving torque of cut-out upper thread (suture) or the driving torque of the above-mentioned compress pin of lifting.
More specifically, implementation based on the rotary speed mode option program 93a of CPU91, for example, under situation by the bigger driving voltage quilt of the voltage of controller 98 indication input regulation of setting when dispatching from the factory, promptly, when in making, using suture thick when dispatching from the factory (usually), become the rotary speed mode data 93c that big mode selects to make the rotary speed of the impulse motor 13 when cutting off sutures by shut-off mechanism 40 to slow down with driving torque when common, and under the situation of the indication input driving voltage littler than the voltage of regulation, promptly, when in making, using suture thin when common, the rotary speed mode data 93c of the rotary speed speedup of the impulse motor 13 the when mode that diminishes with driving torque when common is selected to make and cut off sutures by shut-off mechanism 40.
Equally, when changing pressing force setting (installation site of corresponding slotted hole B and screw C) corresponding to the pressing force of compress pin 21, by setting, select: when increasing pressing force, make rotary speed mode data 93c that the rotary speed of impulse motor 13 slows down and when reducing pressing force, make any one party of rotary speed mode data 93c of the rotary speed speedup of impulse motor 13 in the mode that reduces torque in the mode that increases torque by the input of controller 98.
Drive controlling program 93b (drive controlling mechanism) is the program that is used for realizing with following processing function associated: at CPU91, as drive controlling mechanism, based on the selecteed rotary speed mode by the implementation of rotary speed mode option program 93a, the rotation of control impuls motor 13 drives.
And, ROM93, as rotary speed mode storing mechanism, store a plurality of rotary speed mode data 93c, these a plurality of rotary speed mode data 93c, the rotary speed of the rotary speed of the impulse motor 13 when having stipulated to cut off upper threads (suture) and the impulse motor 13 when compress pin 21 being risen by cloth presser 20 by shut-off mechanism 40.
On interface 94, be electrically connected with motor of sewing machine drive circuit 95, impulse motor drive circuit 96, solenoid drive circuit 97 and controller 98.
Motor of sewing machine drive circuit 95 is connected on the motor of sewing machine 99, based on the result of the calculation process of CPU91, from this CPU91 output and the driving signal by interface 94 inputs, the driving of control motor of sewing machine 99.Thus, motor of sewing machine 99 drives, and eedle moves up and down and forms stitching, thus, can carry out and make running.
Impulse motor drive circuit 96 is connected on the impulse motor 13, based on the result of the calculation process of CPU91, from this CPU91 output and the driving signal by interface 94 inputs, the driving of control impuls motor 13.Thus, during impulse motor 13 drivings, this impulse motor 13 carried out 1 rotation, time point according to the rules carried out the cut-out action of mobile cutter 42 and the vertical motion of compress pin 21.
Solenoid drive circuit 97 is connected on the solenoid 81, based on the result of the calculation process of CPU91, from this CPU91 output and the driving signal by interface 94 inputs, the driving of control solenoid 81.Thus, solenoid 81 drives, and 82 relative fixed dish portions 832 move movable plate portion 831 along X-direction by bar.
Controller 98 possesses the input switch of regulation of the various processing of the Sewing machines 10 under the control that is used to indicate CPU91, based on the operator's of each input switch operation, to the signal of CPU91 output regulation.Particularly, on the input switch of controller 98, for example, be provided with the switch of the driving voltage of the regulation that is used to indicate the solenoid of stipulating according to the thickness of suture 81 (line transfer driving mechanism).
That is, controller 98, as the driving voltage input mechanism, the driving voltage of input solenoid 81 (line transfer driving mechanism).That is, controller 98 constitutes cut-out relevant information input mechanism (sewing condition information input mechanism), and this cuts off relevant information input mechanism, the thickness (suture cut-out relevant information) of this suture that input is associated with the cut-out of the shut-off mechanism 40 of suture.
And, the input switch of controller 98 is provided with switch, and this switch is indicated the signal of stipulating by operator's operation input, the signal of this regulation is associated corresponding to the installation site of the screw C of the slotted hole B of above-mentioned relatively cloth presser and with the pressing force of compress pin.So controller 98 constitutes compress pin relevant information input mechanism (sewing condition input mechanism), this compress pin relevant information input mechanism, the compress pin relevant information that input is associated with the compress pin lifting power of above-mentioned cloth presser.
(rotation drive controlling)
Below, with reference to Fig. 7～Fig. 9 the rotation drive controlling of the impulse motor under the control of CPU91 13 is illustrated.
At this, the sequential chart of an example of the action of the rotation drive controlling of the impulse motor 13 when Fig. 7 is illustrated in the vertical motion of the cut-out action of the mobile cutter 42 after implementing to make and compress pin 21.In addition, the figure of the corresponding relation of the rotary speed of the impulse motor 13 of the rotation drive controlling of Fig. 8 and Fig. 9 indicating impulse motor 13 and the anglec of rotation.
In the present embodiment, under the control of the CPU91 of Sewing machines 10, that stipulates makes action.Under the control of CPU91, carry out the rotation drive controlling of with the vertical motion of the action of by mobile cutter 42 cutting off upper thread and compress pin 21 relevant impulse motor 13 thereafter.
In the rotation of this impulse motor 13 drives, Sewing machines 10, under its factory state, for example, the rotary speed mode (with reference to Fig. 8) that is configured to according to the rules is rotated impulse motor 13.Promptly, as shown in Figure 7, at first, CPU91 is according to the control program of reading from ROM93, the rotation of control impuls motor 13 drives, so that carry out the line differentiation action of mobile cutter 42 and cut off the vertical motion (step 1) of action and compress pin 21 with predetermined rotational speed.
Particularly, for example, as shown in Figure 8, CPU91 control impuls motor driving loop 96, and the rotation of impulse motor 13 being quickened with certain acceleration roughly, the line of differentiating at the line of mobile cutter 42 is differentiated interval, makes impulse motor 13 rotations with the speed aI about equally of regulation.Thereafter, impulse motor drives loop 96, the rotary speed of impulse motor 13 is reduced, and after the rotation that stops this impulse motor 13, with certain acceleration roughly the rotation of impulse motor 13 is quickened, between the lifting zone that the lifting of compress pin 21 is moved, make impulse motor 13 rotations with the speed aII about equally that stipulates.At this, acceleration area at impulse motor 13, become the anglec of rotation A (phase place of tangent line) of regulation of the speed a of regulation in the rotary speed of this impulse motor 13, that is, make mobile cutter 42 shake and carry out the cut-out of upper thread according to the driving torque of the regulation corresponding with this rotary speed.
Thereafter, the change of the upper thread that is used to make (suture), based on by the operation of operator to the regulation of controller 98, when the driving voltage designated (indication) of the solenoid 81 that drives yarn change mechanism 80 is the value of stipulating (step 2), CPU91 reads rotary speed mode option program 93a and launches among RAM92 from ROM93, implementation based on this rotary speed mode option program 93a, selecting and read out in the tangent line phase place from ROM93 produces the rotary speed mode data 93c of driving torque (step 3), this driving torque is the suture that is used to cut off the thickness corresponding with the driving voltage of the solenoid 81 that is instructed to.
More specifically, for example, when the upper thread that will be used to make changes to suture thick when dispatching from the factory, CPU91 in the tangent line phase place to increase the mode of driving torque when common, promptly, in the tangent line phase place, to produce the motor rotary speed of driving torque big when common, select to carry out the rotary speed mode data 93c of the cut-out of upper thread.That is, as shown in Figure 9, in the accelerating period of the impulse motor 13 behind the online differentiation interval, in the acceleration of stop pulse motor 13 a little before of tangent line phase place (anglec of rotation A), and speed b about equally according to the rules makes this impulse motor 13 rotations.At this, motor rotary speed b is lower than the motor rotary speed a of common tangent line position phase, and thus, the low more driving torque of predetermined pulse motor 13 rotary speeies is big more, can increase the driving torque of upper thread tangent line position phase after changing.
In addition, similarly, the compress pin relevant information that input is produced based on the switch by controller 98, the rotary speed mode data 93c of the impulse motor 13 when selecting the rising of compress pin 21 sets the motor rotary speed between compress pin lifting zone.
Then, CPU91 reads drive controlling program 93b and launches at RAM92 from ROM93, based on the implementation of this drive controlling program 93b, control impuls motor drive circuit 96, and the rotation driving (step S4) that comes control impuls motor 13 according to selecteed rotary speed mode data.
(effect of embodiment)
As mentioned above, Sewing machines 10 according to present embodiment, on ROM93, store a plurality of rotary speed mode data 93c, when these a plurality of rotary speed mode data 93c have stipulated to cut off sutures by shut-off mechanism 40 or the rotary speed of the impulse motor 13 of presser feet when rising; Cut off relevant information or compress pin relevant information based on the suture that is associated with the cut-out of the shut-off mechanism 40 of suture by controller 98 input, can be by the rotary speed mode data 93c of CPU91 from ROM93 strobe pulse motor 13, the driving torque when the rotary speed mode data 93c of this impulse motor 13 can produce cut driving torque of suture and the rising of compress pin.
And, thickness based on the suture corresponding with the driving voltage of the regulation of solenoid 81, can select rotary speed mode data 93c from ROM93 by CPU91, wherein, rotary speed mode data 93c is created in the cut-out phase place and cuts off the driving torque of suture at least, and this solenoid 81 can correspondingly change with the thickness of the suture that is configured in yarn change mechanism 80.
Thus, according to the suture that is used to make, according to produce the rotary speed that can cut off the driving torque of this suture at least when suture cuts off, the rotation that can carry out impulse motor 13 drives.That is, because the optimization of the rotary speed of the impulse motor 13 can realize that suture cuts off the time, its result can prevent that the service cycle of Sewing machines 10 is unnecessarily elongated, suitably shortens this service cycle.
In addition, suture is paid the yarn change mechanism 80 of the tension force of regulation, according to the thickness of suture, can be made the tension force difference that this suture is paid, according to the size of being paid tension force, be the thickness of suture, change drives the driving voltage of the solenoid 81 of this yarn change mechanism 80.So, thickness based on the suture corresponding with the voltage of importing by solenoid 81, by selecting rotary speed mode data 93c, can select to have considered the rotary speed mode data 93c of the thickness of cut suture, can be further the rotary speed of impulse motor 13 during to the cut-out of suture carry out optimization.
In addition, in the above-described embodiments, though become the rotary speed mode data 93c that big mode selects to make the rotary speed of impulse motor 13 to reduce according to the driving torque that makes upper thread tangent line phase place after changing, but be not only for therewith, for example, when upper thread is changed to thinner suture, also can select by the rotary speed mode data 93c that the littler rotary speed that makes impulse motor 13 increases that becomes of the driving torque with the tangent line phase place.
(variation 1)
The above embodiments, be based on the input that makes the driving voltage of the solenoid 81 that yarn change mechanism 80 drives by 98 pairs of controllers, carried out the formation of mode of selection of the rotary speed mode of impulse motor 13, but the Sewing machines of variation 1 can pass through the thickness that controller 98 (line thickness information input mechanism) is imported suture.And, CPU91 is based on the thickness of the suture that is transfused to, read rotary speed mode option program 93a from ROM93, implementation according to this rotary speed mode option program 93a, be chosen in the rotary speed mode that tangent line phase place A produces driving torque from ROM93, this driving torque is used for cutting off the suture of the thickness that is transfused to.
So, according to variation 1, according to thickness by controller 98 input sutures, can select to have considered the rotary speed mode data 93c of the thickness of cut suture, the rotary speed of the impulse motor 13 during to the cut-out of suture can further be carried out optimization.
(variation 2)
Then, the Sewing machines to variation 2 is illustrated with reference to Figure 10.At this, Figure 10 represents the block diagram of main formation of the Sewing machines of variation 2.
The Sewing machines of variation 2, tailoring pattern according to the rules and making, and predesignated the thickness of the suture that is used for each tailoring pattern.That is, as shown in figure 10, the ROM193 of Sewing machines as the tailoring pattern storing mechanism, has stored respectively with a plurality of tailoring patterns and has been used for the corresponding tailoring pattern data of the thickness 193c of the suture of making of these tailoring patterns.And, on ROM193, stored a plurality of thickness and rotary speed mode data 193d of being prescribed of the rotary speed of the impulse motor 13 the during cut-out of this suture according to above-mentioned suture.
In addition, on ROM193, line thickness information acquiring program 193a, rotary speed mode option program 193b have been stored.
Line thickness information acquiring program 193a, in CPU91, obtain mechanism as line thickness information, it is the program that is used to realize and handle function associated, this processing is by reference tailoring pattern data 193c, obtain with by thickness as the corresponding suture of tailoring pattern of controller 98 indication of tailoring pattern indicating mechanism.
Rotary speed mode option program 193b, in CPU91, as the selection mechanism of rotary speed mode, be the program that is used to realize and handle function associated, this processing is from the thickness corresponding rotary speed mode data 193d of ROM193 selection with the suture that obtains according to the implementation of line thickness information acquiring program 193a.
According to above-mentioned formation, by the operator, according to the tailoring pattern of importing regulation by controller 98, implementation based on the line thickness information acquiring program 193a of CPU91, the thickness of the suture of making of the tailoring pattern that indication (obtaining) is used to be transfused to, based on the implementation of rotary speed mode option program 193b, select and the corresponding rotary speed mode of the thickness data 193d of the suture that is instructed to.
Like this, Sewing machines according to variation 2, corresponding tailoring pattern and the thickness that is used for the suture of making of this tailoring pattern, indication based on tailoring pattern, corresponding with the suture of making that is used for this tailoring pattern, to produce the rotary speed that can cut off the driving torque of this suture at least when suture cuts off, the rotation that can carry out impulse motor 13 drives.That is, because the optimization of the rotary speed of the impulse motor 13 can realize that suture cuts off the time, its result can prevent that the service cycle of Sewing machines is unnecessarily elongated, suitably tries to achieve the shorteningization of this service cycle.
In addition, the present invention is defined in the foregoing description, in the scope that does not break away from purport of the present invention, also can carry out the change of various improvement and design.
For example, in the above-described embodiments, when the thickness of change suture, be made as the formation of the rotary speed mode of reselecting (change) impulse motor 13, but it is and therewith non-limiting, for example, based on the degree of the resistance on the surface of suture, the slip complexity when promptly being cut off, also can select the rotary speed mode by mobile cutter 42.Promptly, owing to suitably carry out the cut-out of mobile cutter 42, when being the suture that slides easily, make the rotary speed of the impulse motor 13 of tangent line phase place A lower speed, on the other hand, when being the suture that is difficult to slide, make the rotary speed speedup of the impulse motor 13 of tangent line phase place A, also can obtain the cut-out of the suture of more suitable mobile cutter 42.
In addition, though represented the example of the data that the switch input by controller 98 is associated with pressing force to the below of compress pin 21, but also can on the length direction of the slotted hole B of cloth presser 20, dispose linear transducer, and detect the installation site of screw C thus, the output of linear transducer is utilized as rotary speed mode data 93c.And, pressure sensor etc. also can be set and obtain acting on the active force of the descent direction on the compress pin.
And, the example of controlling though the speed of the impulse motor 13 when having represented the compress pin risen is associated with torque, the speed of the impulse motor 13 in the time of can falling the compress underfooting is similarly controlled.
And, in the above-described embodiments, though the example of having controlled continuously when having represented suture cut off and during the lifting of compress pin also can only be controlled a certain side.
In addition, also can be by controller 98 etc., the directly driving torque or the rotary speed of input pulse motor 13 are carried out the rotation drive controlling of impulse motor 13 thus.
In addition, as the rotary speed mode, Fig. 8 and shown in Figure 9 be an example, be not to be defined in this.
And, as CD-ROM drive motor, though illustration impulse motor 13, be not to be defined in this, so long as stipulate the CD-ROM drive motor of driving torque at least according to rotary speed, no matter be that what motor can.

Claims (5)

1. Sewing machines, comprise by the travelling mechanism that independently is arranged on the Sewing machines and can moves be connected with described travelling mechanism and come the CD-ROM drive motor of regulation driving torque according to rotary speed, it is characterized in that possessing:
Rotary speed mode storing mechanism, it is used to store a plurality of rotary speed modes, and described rotary speed mode is defined as in the rotary speed of described CD-ROM drive motor in described when operation of described travelling mechanism at least;
Sewing condition information input mechanism, it is used to import the sewing condition information that is associated with the action of described travelling mechanism;
The selection mechanism of rotary speed mode, it is based on the described sewing condition information by the input of described sewing condition mechanism, the rotary speed mode of the driving torque during from action that described rotary speed mode storing mechanism is selected to produce described travelling mechanism;
Drive controlling mechanism, it is based on the described rotary speed mode of selecting by described rotary speed mode, and the rotation of controlling described CD-ROM drive motor drives.
2. Sewing machines, comprise the shut-off mechanism that is used to cut off suture, have always bear upward or the cloth presser of the compress pin of the elastic force of below and this compress pin of liftable so that shut-off mechanism cuts off action and the mode that makes cloth presser carry out compress pin lifting action connects and stipulate according to rotary speed the single CD-ROM drive motor of its driving torque, it is characterized in that possessing:
Rotary speed mode storing mechanism, it is used to store a plurality of rotary speed modes, this rotary speed mode, the rotary speed of the described CD-ROM drive motor the when rotary speed of the described CD-ROM drive motor when the described suture of having stipulated described shut-off mechanism cuts off and the compress pin lifting of described cloth presser;
Cut off the relevant information input mechanism, it is used to import the suture that is associated with the cut-out of the described shut-off mechanism of described suture and cuts off relevant information;
Compress pin relevant information input mechanism, it is used to import the compress pin relevant information that is associated with the compress pin lifting power of described cloth presser;
The selection mechanism of rotary speed mode, it cuts off relevant information based on the described described suture that is transfused to, select to produce the rotary speed mode of the cut driving torque of described suture from described rotary speed mode storing mechanism, simultaneously, based on the described compress pin relevant information that is transfused to, select to take place described compress pin by the rotary speed mode of the driving torque of lifting from described rotary speed mode storing mechanism;
Drive controlling mechanism, it controls the rotation driving of described CD-ROM drive motor based on by the selected described rotary speed mode of described rotary speed mode selection mechanism.
3. Sewing machines comprises being used to cut off the shut-off mechanism of suture and being connected on the shut-off mechanism and stipulating the CD-ROM drive motor of its driving torque to it is characterized in that possessing according to rotary speed:
Rotary speed mode storing mechanism, the rotary speed mode of the rotary speed of the described CD-ROM drive motor when it is used to store a plurality of described sutures of having stipulated described shut-off mechanism and cuts off;
Cut off the relevant information input mechanism, it is used to import the suture that is associated with the cut-out of the described shut-off mechanism of described suture and cuts off relevant information;
The selection mechanism of rotary speed mode, it cuts off relevant information based on the described suture that is transfused to by described cut-out relevant information input mechanism, selects to produce the rotary speed mode of the driving torque of cutting off described suture at least from described rotary speed mode storing mechanism;
Drive controlling mechanism, it is based on the selecteed described rotary speed mode by the selection mechanism of described rotary speed mode, and the rotation of controlling described CD-ROM drive motor drives.
4. Sewing machines according to claim 3 is characterized in that,
Possess to described suture pay regulation tension force yarn change mechanism and drive the line transfer driving mechanism of described yarn change mechanism,
Described cut-out relevant information input mechanism possesses the driving voltage input mechanism, and this driving voltage input mechanism is used to import the driving voltage of the described line transfer driving mechanism that the thickness according to described suture changes,
The selection mechanism of described rotary speed mode according to the described driving voltage that is transfused to by described driving voltage input mechanism, is selected described rotary speed mode from described rotary speed mode storing mechanism.
5. Sewing machines, comprise have always bear upward or the compress pin of the elastic force of below and cloth presser that can this compress pin of lifting with so that cloth presser carries out the CD-ROM drive motor that the mode of compress pin lifting operation is connected and stipulates according to rotary speed its driving torque, it is characterized in that possessing:
Rotary speed mode storing mechanism, the rotary speed mode of the rotary speed of the described CD-ROM drive motor when it is used to store a plurality of compress pin lifting of having stipulated described cloth presser;
Compress pin relevant information input mechanism, it is used to import the compress pin relevant information that is associated with the compress pin pressing force of described cloth presser;
The selection mechanism of rotary speed mode, it selects described compress pin by the driving torque of lifting based on the described compress pin relevant information that is transfused to from described rotary speed mode storing mechanism;
Drive controlling mechanism, it is based on the selecteed described rotary speed mode by the selection mechanism of described rotary speed mode, and the rotation of controlling described CD-ROM drive motor drives.
CNA2005101084575A 2004-10-08 2005-10-08 Sewing machine Pending CN1757809A (en)

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JP2004296964A JP2006102399A (en) 2004-10-08 2004-10-08 Sewing machine

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CN101660250A (en) * 2008-08-27 2010-03-03 Juki株式会社 Thread-severing device for sewing machine
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CN103320974A (en) * 2012-03-20 2013-09-25 贺欣机械厂股份有限公司 Press foot and wire cutting drive device of sewing machine
CN103320974B (en) * 2012-03-20 2015-03-18 贺欣机械厂股份有限公司 Press foot and wire cutting drive device of sewing machine
CN114150446A (en) * 2020-09-07 2022-03-08 杰克科技股份有限公司 Sewing machine trimming and presser foot lifting device and sewing machine
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