CN105316875A - Sewing machine - Google Patents
Sewing machine Download PDFInfo
- Publication number
- CN105316875A CN105316875A CN201410379538.8A CN201410379538A CN105316875A CN 105316875 A CN105316875 A CN 105316875A CN 201410379538 A CN201410379538 A CN 201410379538A CN 105316875 A CN105316875 A CN 105316875A
- Authority
- CN
- China
- Prior art keywords
- pressing force
- feeding
- cloth
- presser feet
- making
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Sewing Machines And Sewing (AREA)
Abstract
The invention provides a sewing machine which is capable of enabling a cloth feeding mechanism to be successfully and accurately driven and to carry out good sewing while restraining the load of a driving part enabling the cloth feeding mechanism to drive. The sewing machine is provided with the cloth feeding mechanism (17), wherein the cloth feeding mechanism (17) is provided with a feeding plate (21), pressing legs (22), a feeding driving part (23) and a pressing force regulating part (24); the feeding plate (21) is arranged on the upper surface of a base part of the sewing machine; the pressing legs (22) are arranged on the upper surface of the feeding plate (21) in a way that cloth of a sewing object is arranged between the pressing legs (22) and the feeding plate (21); the feeding driving part (23) enables the feeding plate (21) and the pressing legs (22) to move on the base part of the sewing machine; the pressing force regulating part (24) is used for pressing the pressing legs (22) from the upside; a control device corresponds to moving states of the feeding plate (21), which is realized through the feeding driving part (23), and the pressing legs (22) and is used for regulating the pressing force of the pressing force regulating part (24) on the pressing legs (22).
Description
Technical field
The present invention relates to a kind of Sewing machines, with maintenance cloth make the cloth feeding mechanism of this cloth movement synchronous, cloth is made.
Background technology
To the edge in button hole etc. the Sewing machines made of lockstitching a border, there is cloth feeding mechanism, this cloth feeding mechanism clamps the cloth making object between feeding plate and presser feet, utilize from top the pretightning force of spring to press presser feet, with the state clamping cloth between feeding plate and presser feet, feeding plate and presser feet are moved.Further, in this Sewing machines, by making for each pin the cloth clamped by feeding plate and presser feet move, thus on cloth, carry out lock seaming make (for example, referring to patent document 1).
Patent document 1: Japanese Unexamined Patent Publication 11-9859 publication
In addition, in above-mentioned cloth feeding mechanism, the pretightning force of spring is utilized to press presser feet, therefore, the pressing force pressing that presser feet is fixed all the time.
If the pressing force of this spring to presser feet is less, then suppresses the load making the action of feeding plate, therefore, it is possible to make feeding plate move with less power, the load to drive division can be made to reduce.But if the pressing force of spring is less, then feeding plate does not stop at the stop position of regulation due to inertia, if the stopping that excessively movement occurs is delayed, needle downing position may be made to offset from precalculated position.
In addition, if increase the pressing force of spring, then stopping can being suppressed to delay, but owing to making the load of feeding plate action become large, so feeding plate must be made to move with larger power.Therefore, the load to the actuators such as motor and drive division is increased, causes the maximization of cloth feeding mechanism and the increase of power consumption.In addition, due to the power that each several part effect to cloth feeding mechanism is larger, make feeding plate in the stop position deviation of the front side stopping of assigned position etc. so may produce due to the flexure at each several part place of above-mentioned cloth feeding mechanism etc.
Summary of the invention
The present invention be exactly in view of the foregoing and propose, its object is to, a kind of Sewing machines is provided, its can suppress to the drive division that cloth feeding mechanism is driven load while, make cloth feeding mechanism smoothly and drive accurately, carrying out good making.
To achieve these goals, Sewing machines of the present invention has:
Cloth feeding mechanism, it keeps making the cloth of object and this cloth is moved in sewing machine base portion; Sewing mechanism, it utilizes suture needle to make the described cloth by this cloth feeding mechanism movement; And control device, it controls described cloth feeding mechanism and described sewing mechanism,
The feature of this Sewing machines is,
Described cloth feeding mechanism has:
Feeding plate, it is configured in the upper surface in described sewing machine base portion;
Presser feet, it is configured in the upper surface of described feeding plate across described cloth;
Feed servo system portion, it makes described feeding plate move in described sewing machine base portion; And
Pressing force adjustment part, it presses described presser feet from top,
Described control device is corresponding with the mobile status of the described feeding plate realized by described Feed servo system portion and described presser feet, adjusts the pressing force of described pressing force adjustment part for described presser feet.
According to this structure, by corresponding with the mobile status of the feeding plate utilizing Feed servo system portion to realize and presser feet, suitably the pressing force of pressing force adjustment part for presser feet is adjusted, thus the load in Feed servo system portion can be suppressed as far as possible, suppress useless energy ezpenditure.In addition, the flexure etc. of each mechanism section can be suppressed, and carry out movement and the stopping of cloth accurately, and, the feeding plate of just movement and presser feet can be made promptly to brake, can prevent stop position from excessively moving from making precalculated position and stopping delaying because of inertia, thereby, it is possible to it is attractive in appearance to make to make achievement.
In Sewing machines of the present invention, preferred described control device is making described feeding plate to when making the feed motion of precalculated position movement, described pressing force adjustment part is set to feeding pressing force for the pressing force of described presser feet, make described feeding plate described make pre-position stop braking maneuver time, described pressing force adjustment part is set to braking pressing force for the pressing force of described presser feet, the pin that carries out to cloth falling make action time, described pressing force adjustment part is set to for the pressing force of described presser feet and makes pressing force.
According to this structure, by the pressing force made in process of each pin realized by sewing mechanism, control be: make feeding plate to feeding pressing force when making the feed motion of precalculated position movement, the braking pressing force making above-mentioned feeding plate when making the braking maneuver that pre-position stops and carrying out on cloth fall pin make action time make pressing force.As noted above, by controlling the pressing force made in process of a pin subtly, thus each pin make process time, can in the load suppressing Feed servo system portion as far as possible, and while suppressing useless energy expenditure, prevent stopping from delaying, overall achievement of making can be made attractive in appearance.
In Sewing machines of the present invention, described feeding pressing force is set to than described that to make pressing force little by preferred described control device, described braking pressing force is set to than described that to make pressing force large.
According to this structure, can during the pin that falls carrying out a pin, feed motion time, braking maneuver time and be set to best feeding pressing force when making action respectively, therefore, the load in Feed servo system portion can suppressed as far as possible and while suppressing useless energy ezpenditure, prevent stopping from delaying, overall achievement of making can be made attractive in appearance.
In Sewing machines of the present invention, preferred described control device is after making process control formation button hole described in passing through, described Feed servo system portion is driven, carry out the empty feeding of making precalculated position movement making described feeding plate to next button hole, after described empty feeding, perform to form next button hole by making process described in carrying out and controlling make control continuously, the pressing force of described presser feet during described empty feeding is set to sky feeding pressing force, described empty feeding pressing force is set to than described that to make pressing force little.
According to this structure, by with than when making process make the state that the little empty feeding pressing force of pressing force presses presser feet under, carry out sky feeding, thus the load in Feed servo system portion can be suppressed as far as possible, suppress useless energy ezpenditure, suppress the flexure etc. of each mechanism section.Thereby, it is possible to make feeding plate promptly carry out sky feeding to making precalculated position and configure, and can accurately to making precalculated position configuration.
In Sewing machines of the present invention, preferred described Feed servo system portion has the position detection part detected the position of described feeding plate, described control device, based on the positional information from described position detection part, adjusts the pressing force of described pressing force adjustment part.
According to this structure, based on the positional information from position detection part, can adjust with the pressing force of the timing of the best to pressing force adjustment part.Such as, can based on the positional information from position detection part, inferring to brake pressing force and presser feet is pressed and the braking of braking timing and braking time, accurately to making precalculated position configuration, suppressing the position skew of cloth, make to make achievement attractive in appearance.
The effect of invention
According to Sewing machines of the present invention, a kind of Sewing machines can be provided, its can suppress to the drive division that cloth feeding mechanism is driven load while, make cloth feeding mechanism smoothly and drive accurately, carrying out good making.
Accompanying drawing explanation
Fig. 1 is the oblique view of the outward appearance of the Sewing machines represented involved by embodiment.
Fig. 2 is the oblique view of the cloth feeding mechanism of Sewing machines.
Fig. 3 is the side view of the cloth feeding mechanism of Sewing machines.
Fig. 4 is the front view of the cloth feeding mechanism of Sewing machines.
Fig. 5 is the oblique view near the foot-pressing bar of cloth feeding mechanism.
Fig. 6 is the oblique view near the foot-pressing bar of cloth feeding mechanism.
Fig. 7 is the block diagram be described the control system of Sewing machines.
Fig. 8 makes to the lock seaming in button hole the figure be described, and (a) and (b) is the top view making position respectively.
Fig. 9 is the flow chart making the control of process representing each pin.
Figure 10 is the curve map of the cloth change in location of the lock seaming represented in cloth feeding mechanism when making.
Figure 11 is the curve map of the cloth change in location of the lock seaming represented in the cloth feeding mechanism involved by reference example when making.
Figure 12 is the flow chart making control when representing that the lock seaming carrying out multiple button hole is continuously made.
The explanation of label
11: Sewing machines
14: sewing machine base portion
17: cloth feeding mechanism
21: feeding plate
22: presser feet
23: Feed servo system portion
24: pressing force adjustment part
40a, 70a: encoder (position detection part)
101: control device
105: sewing machine electromotor (sewing mechanism)
A: feeding pressing force
B: braking pressing force
C: make pressing force
D: empty feeding pressing force
Detailed description of the invention
Below, with reference to accompanying drawing, the embodiment of Sewing machines involved in the present invention is described.Fig. 1 is the oblique view of the outward appearance of the Sewing machines represented involved by embodiment.
As shown in Figure 1, it is the sewing machine stand 12 of roughly U-shaped that the Sewing machines 11 involved by present embodiment has the profile when side-looking is observed.This sewing machine stand 12 has: Sewing machines arm 13, and it forms the top of Sewing machines 11, extends in front-rear direction; Sewing machine base portion 14, it forms the bottom of Sewing machines 11, extends in front-rear direction; And upstanding body portion 15, Sewing machines arm 13 and sewing machine base portion 14 link by it.In addition, Sewing machines 11 has guidance panel 16, can carry out various setting from this guidance panel 16.This guidance panel 16 arranges display part 16a, various setting items etc. are shown.
Sewing machines 11 has sewing mechanism (omitting diagram), and this sewing mechanism has sewing machine electromotor 105 (with reference to Fig. 7).Sewing machine electromotor 105 makes the upper axle (omitting diagram) be arranged on Sewing machines arm 13 rotate.In addition, arrange needle bar driving mechanism (omitting diagram) in the front of Sewing machines arm 13, in utilization, the revolving force of axle makes the needle bar (omitting diagram) being provided with suture needle (omitting diagram) vertically move.
In sewing machine base portion 14, be provided with the lower shaft (omitting diagram) that crank mechanism (omitting diagram) swings from upper axle transmission power.In addition, in sewing machine base portion 14, setting has the still drive transmission mechanism (omitting diagram) of still (omitting diagram), and still is swung by still drive transmission mechanism, forms stitching thus when making by the co-operating with suture needle.
Fig. 2 is the oblique view of the cloth feeding mechanism of Sewing machines.Fig. 3 is the side view of the cloth feeding mechanism of Sewing machines.
As shown in Figures 2 and 3, Sewing machines 11 is provided with cloth feeding mechanism 17.Cloth feeding mechanism 17 has feeding plate 21, presser feet 22, Feed servo system portion 23 and pressing force adjustment part 24.
Feeding plate 21 is formed as the tabular with elongated hole 21a, is configured in sewing machine base portion 14.
Presser feet 22 is formed as the tabular with elongated hole 22a, is configured in the upper surface of feeding plate 21, and elongated hole 22a is communicated with the elongated hole 21a of feeding plate 21.This presser feet 22 is supported on presser feet wrist 25.This presser feet wrist 25 has support wrist 26, and this support wrist 26 is supported with bracket 27.Bracket 27 is formed as the tabular extended along the side supporting wrist 26, and intermediate portion links with support wrist 26.Have presser feet foot 28 at the two ends of bracket 27, above-mentioned presser feet foot 28 is fixed on the two ends of presser feet 22.Thus, presser feet 22 is supported on presser feet wrist 25.
Feed servo system portion 23 is housed in sewing machine base portion 14.Feed servo system portion 23 has movable block 31, and this movable block 31 is fixed with feeding plate 21.A part for movable block 31 is protruded upward compared with the upper surface in sewing machine base portion 14, and at the part place of this protrusion, support the one end of the presser feet wrist 25 supporting presser feet 22, this one end can be rotated centered by horizontal axis.
Feed servo system portion 23 has: a pair fixed block 34,35, and it is fixed on the framework (omitting diagram) in sewing machine base portion 14; And a pair guide rod 36,37, its two ends are supported on above-mentioned fixed block 34,35.Guide rod 36,37 is supported in parallel with each other along the length direction in sewing machine base portion 14, and movable block 31 is supported on above-mentioned guide rod 36,37, can move along the length direction in sewing machine base portion 14.
On the fixed block 34 of the side, upstanding body portion 15 in fixed block 34,35, such as, be fixed with the feed motors such as stepping motor 40.The rotating shaft 41 of this feed motor 40 arranges driving rolls 42, this driving rolls 42 is linked with transfer tape 44.On the fixed block 35 of the front in the sewing machine base portion 14 in fixed block 34,35, return idler 43 is set, this return idler 43 is linked with transfer tape 44.A part for transfer tape 44 is fixed with movable block 31.
Pressing force adjustment part 24 is housed in Sewing machines arm 13.This pressing force adjustment part 24 has lifting unit 51 and presser feet drive division 52.
Fig. 4 is the front view of the cloth feeding mechanism of Sewing machines.Fig. 5 is the oblique view near the foot-pressing bar of cloth feeding mechanism.Fig. 6 is the oblique view near the foot-pressing bar of cloth feeding mechanism.
As shown in Figures 4 to 6, lifting unit 51 has foot-pressing bar 53.Foot-pressing bar 53 is fixed with support component 54.This support component 54 forms guide hump 55, and this guide hump 55 is inserted in the slit 56a of the above-below direction formed on guided plate 56.Guided plate 56 is fixed on the framework (omitting diagram) of Sewing machines arm 13, is inserted into the guide hump 55 in slit 56a, vertically moves in slit 56a.Thus, foot-pressing bar 53 is guided up and down.
In addition, on the framework of Sewing machines arm 13, be supported with linkage component 57 rotationally.This linkage component 57 is formed as L-shaped, and have the connecting rod piece 57a extended to side and the connecting rod piece 57b extended upward, the connecting rod piece 57a that the side to this linkage component 57 extends links with support component 54 rotationally.
Latch for printed circuit 58 is fixed with in the bottom of foot-pressing bar 53.Latch for printed circuit 58 is configured in the side of the support wrist 26 of presser feet wrist 25, is provided with the fastener 59 to supporting wrist 26 side protrusion in its lower end.In the upper edge portion of the support wrist 26 of presser feet wrist 25, be provided with the extension 26a that the rear side to Sewing machines 11 stretches out, fastener 59 is configured in the lower side of the extension 26a of the upper limb supporting wrist 26.In addition, on latch for printed circuit 58, support wrist 26 side of presser feet wrist 25 is provided with pressing roller 60.This pressing roller 60 is supported on foot-pressing bar 53, can rotate centered by horizontal axis.This pressing roller 60 rotationally with the upper contact of the support wrist 26 of presser feet wrist 25.
Presser feet drive division 52 has the presser foot motor 70 such as such as stepping motor.This presser foot motor 70 is fixed on the bracket 72 on the framework being fixed in Sewing machines arm 13, and its rotating shaft 71 is provided with driven wheel 73.In addition, bracket 72 rotatably supports driven gear 74, driven wheel 73 engages with this driven gear 74.On driven gear 74, the position of radial outside compared with center, is linked with one end of bar-shaped connecting rod rod 75 rotationally.Connecting rod rod 75 configures along Sewing machines arm 13, and the other end of connecting rod rod 75 links with the connecting rod piece 57b extended upward of linkage component 57 rotationally.
In above-mentioned cloth feeding mechanism 17, if make the presser foot motor 70 of the presser feet drive division 52 of pressing force adjustment part 24 drive, then the rotatory force of presser foot motor 70 is transmitted to driven gear 74 from driven wheel 73, driven gear 74 is rotated.Like this, the connecting rod rod 75 linked with driven gear 74 moves to the length direction of Sewing machines arm 13, and the linkage component 57 being linked with this connecting rod rod 75 is swung.Thus, move up and down together with foot-pressing bar 53 and the support component 54 that links with the connecting rod piece 57a of linkage component 57.
If foot-pressing bar 53 is moved upward, then pressing roller 60 is removed for the pressing of the support wrist 26 of presser feet wrist 25, and fastener 59 engages with the extension 26a of the support wrist 26 of presser feet wrist 25, while rise.Thus, raise supporting the front of wrist 26, make presser feet wrist 25 by with the bond sites of movable block 31 centered by rotate.Thus, presser feet 22 is moved upward, is separated from feeding plate 21.Thereby, it is possible to configuring cloth between feeding plate 21 and presser feet 22 and taking out cloth between feeding plate 21 and presser feet 22.
If foot-pressing bar 53 moves, be then arranged on the pressing roller 60 on the latch for printed circuit 58 of foot-pressing bar 53 downwards, the support wrist 26 of presser feet wrist 25 is pressed downwards.Thus, presser feet 22 presses to feeding plate 21, utilizes feeding plate 21 and presser feet 22 to clamp the cloth be configured between feeding plate 21 and presser feet 22.
In addition, if make the feed motor 40 in Feed servo system portion 23 drive, then the rotatory force of feed motor 40 is transmitted from driving rolls 42 to transfer tape 44.Thus, the transfer tape 44 be hung on this driving rolls 42 and return idler 43 is moved, the movable block 31 be fixed in this transfer tape 44 is moved.Like this, feeding plate 21 on this movable block 31 is fixed on and presser feet wrist 25 moves.Owing to utilizing 24 pairs, pressing force adjustment part presser feet 22 to press, so the cloth be clamped between feeding plate 21 and presser feet 22 also moves together with presser feet 22 with feeding plate 21.
Fig. 7 is the block diagram be described the control system of Sewing machines.
As shown in Figure 7, Sewing machines 11 has control device 101.Control device 101 has CPU102, memory 103 and multiple motor driver 104.Motor driver 104 is connected with sewing machine electromotor 105, feed motor 40 and presser foot motor 70, via motor driver 104, the driving of CPU102 to sewing machine electromotor 105, feed motor 40 and presser foot motor 70 is utilized to control.
In sewing machine electromotor 105, feed motor 40 and presser foot motor 70, be built-in with encoder (position detection part) 105a, 40a, 70a respectively, the positional information from above-mentioned encoder 105a, 40a, 70a is sent to CPU102 via motor driver 104.CPU102, based on the positional information of respective encoder 105a, 40a, the 70a from sewing machine electromotor 105, feed motor 40 and presser foot motor 70, controls the rotation amount of sewing machine electromotor 105, feed motor 40 and presser foot motor 70 and direction of rotation.
The CPU102 of control device 101 is connected with guidance panel 16, the various setting items inputted from this guidance panel 16 are sent to CPU102.In addition, guidance panel 16, according to the picture signal sent from CPU102, shows various information.In memory 103, store the data such as various program and setting value as stitch data, CPU102, based on the program of memory 103 and data, controls sewing machine electromotor 105, feed motor 40 and presser foot motor 70.
The situation that the lock seaming utilizing above-mentioned Sewing machines 11 to carry out button hole is made is described.
Fig. 8 makes to the lock seaming in button hole the figure be described, and (a) and (b) is the top view making position respectively.
First, presser foot motor 70 being driven, the support wrist 26 of presser feet wrist 25 is raised, making presser feet 22 from the state that feeding plate 21 leaves, configuring cloth between feeding plate 21 and presser feet 22.
Then, presser foot motor 70 is reversed drive, what make support wrist 26 raises releasing, and is pressed by the support wrist 26 of the pressing roller 60 of pressing force adjustment part 24 to presser feet wrist 25, presser feet 22 is pressed towards feeding plate 21, utilizes feeding plate 21 and presser feet 22 to clamp cloth.
In this condition, sewing machine electromotor 105 and feed motor 40 are driven, the cloth clamped by feeding plate 21 and presser feet 22 is moved, while in the elongated hole 21a of feeding plate 21 and the elongated hole 22a of presser feet 22, utilize suture needle to make cloth.Thus, as shown in Fig. 8 (a), the lock seaming carrying out becoming button hole BT is made.
If the lock seaming sewing finishing of a button hole BT, then utilize feeding plate 21 and the state of presser feet 22 to clamping cloth to maintain, while make feed motor 40 drive, make feeding plate 21 carry out sky feeding, make precalculated position configuration to the next one.Then, sewing machine electromotor 105 and feed motor 40 are driven, the cloth clamped by feeding plate 21 and presser feet 22 is moved, while in the elongated hole 21a of feeding plate 21 and the elongated hole 22a of presser feet 22, utilize suture needle to make cloth.Thus, as shown in Fig. 8 (b), in the position different from the button hole BT made, the lock seaming carrying out becoming other button holes BT is made.
Below, the concrete control of CPU102 for cloth feeding mechanism 17 of the control device 101 when making is described.
(process of making of each pin controls)
Sewing machines 11 involved by present embodiment is by carrying out for each pin following making process, and this repeating stipulated number makes process, thus carries out lock seaming and make.
Below, the control of making process of each pin is described.
Fig. 9 is the flow chart making the control of process representing each pin.Figure 10 is the curve map representing the cloth change in location of lockstitching a border when making.
(step S1)
Feeding plate 21 is moved, make cloth to make precalculated position X move time, based on the positional information of the encoder 70a from presser foot motor 70, the presser foot motor 70 of pressing force adjustment part 24 is controlled, the pressing force of presser feet 22 is set to feeding pressing force A.This feeding pressing force A is the pressing force preset, and is stored in memory 103.This feeding pressing force A makes the cloth clamped by feeding plate 21 and presser feet 22 that the less pressing force of degree offset not occur, and is set to and makes pressing force little compared with pressing force C with described later when making.
(step S2)
In order to make feeding plate 21 move to making precalculated position X, and the feed motor 40 in Feed servo system portion 23 is driven.Now, by the pressing force of pressing force adjustment part 24 for presser feet 22, be set to the more weak feeding pressing force A of the cloth that makes to be clamped by feeding plate 21 and presser feet 22 not degrees of offset, therefore, the load of feeding plate 21 action diminished.Thus, cloth feeding mechanism 17 can be very well and promptly make feeding plate 21 and presser feet 22 move, and can not produce cloth offset (being T1 ~ T2 in Fig. 10).
(step S3)
Based on the positional information of the encoder 40a from feed motor 40, judge whether feeding plate 21 has moved to and make precalculated position X.
(step S4)
If it is determined that make precalculated position X (step S3: yes) for feeding plate 21 has moved to, feed motor 40 is then made to stop, and based on the positional information of the encoder 70a from presser foot motor 70, the presser foot motor 70 of pressing force adjustment part 24 is controlled, the pressing force of presser feet 22 is set to braking pressing force B.This braking pressing force B is the pressing force preset, and is stored in memory 103.This braking pressing force B is that the feeding plate 21 for aligning movement carries out braking and the pressing force making it stop, and is set to and makes pressing force large compared with pressing force C with described later when making.CPU102 is based on the positional information of the encoder 40a from feed motor 40, infer to brake pressing force B and press presser feet 22 and braking time that it is braked, in during this braking time, pressing force adjustment part 24 is set to braking pressing force B for the pressing force of presser feet 22.
By utilizing this braking pressing force B to press presser feet 22, thus the load of feeding plate 21 action is made to become large.Thereby, it is possible to suppressing feeding plate 21 because inertia is not making the stopping of X place, precalculated position, excessively moving and stopping delaying.Therefore, arrive the position of making precalculated position X at feeding plate 21, feeding plate 21 promptly stops (being T2 ~ T3 in Fig. 10).
(step S5)
Based on the positional information of the encoder 40a from feed motor 40, judge whether feeding plate 21 stops completely.
(step S6)
If it is determined that stop (step S5: yes) completely for feeding plate 21, then based on the positional information of the encoder 70a from presser foot motor 70, the presser foot motor 70 of pressing force adjustment part 24 is controlled, the pressing force of presser feet 22 is set to and makes pressing force C.This is made pressing force C and there will not be the problem of cloth offset or tilting, the most applicable pressing force made when making.This makes pressing force C is by utilizing guidance panel 16 to specify to make the cloth kind of object and thickness etc. and setting.If user utilizes guidance panel 16 to specify and makes the cloth kind of object and thickness etc., then CPU102 transfers preset make pressing force C for this appointment each from memory 103, and what the pressing force of presser feet 22 is set to this transfers out makes pressing force C.
(step S7)
By making sewing machine electromotor 105 drive, thus carry out on cloth with one for making of answering.Now, presser feet 22 presses with the suitable pressing force C that makes corresponding with the kind and thickness of cloth.That is, when making, with the pressing force C that makes being applicable to making, presser feet 22 being pressed, maintaining the state (being T3 ~ T4 in Fig. 10) stably keeping cloth.Thus, there will not be the suture needle owing to moving up and down in making that cloth is offset or tilt and upset the problem of making, in addition, there will not be and tightly against press cloth and the problem that forms vestige on cloth, can make well.
Further, in the Sewing machines 11 involved by present embodiment, by repeatedly carrying out above-mentioned processing (step S1 ~ S7) for making of answering with one, thus the lock seaming carrying out button hole is made.
Here, shown in Figure 11 is an example of lock seaming when utilizing spring etc. to press presser feet 22 with fixing pressing force cloth change in location when making.In addition, in this example, the pressing force of presser feet 22 is set to the pressing force being applicable to making.
In this example, with larger fixing pressing force, presser feet 22 is pressed.Therefore, in the case, making feeding plate 21 to making (being T1 ~ T2 in fig. 11) when precalculated position X moves, making the load of feeding plate 21 action become large.Therefore, the load to feed motor 40 increases, and causes the maximization of cloth feeding mechanism 17 and the increase of power consumption.
In addition, owing to pressing presser feet 22 with fixing pressing force, even if so make feed motor 40 stop, feeding plate 21 is also made not stop making X place, precalculated position because of inertia, excessively mobile and stopping occurs delay (being T2 ~ T3 in fig. 11).Therefore, may produce following problems etc., that is, slightly there is position skew in cloth, and when making after this (being T3 ~ T4 in fig. 11), needle downing position offsets, and cannot complete stitching attractive in appearance.
(the making control of multiple button hole)
Below, illustrate and make control when the lock seaming carrying out multiple button hole is continuously made.
Sewing machines 11 involved by present embodiment, when the lock seaming carrying out multiple button hole is continuously made, carries out following making control.
Figure 12 is the flow chart making control continuously when representing that the lock seaming carrying out multiple button hole is continuously made.
(step S11)
First, lock seaming cloth carrying out first button hole is made.In the lock seaming in button hole is made, the process of making repeatedly carrying out each pin above-mentioned controls (step S1 ~ S7).Therefore, the pressing force of presser feet 22 uses the process of making of each pin above-mentioned control feeding pressing force A, the braking pressing force B in (step S1 ~ S7) and make pressing force C.
(step S12)
If the lock seaming sewing finishing in first button hole, then based on the positional information of the encoder 70a from presser foot motor 70, the presser foot motor 70 of pressing force adjustment part 24 is controlled, the pressing force of presser feet 22 is set to sky feeding pressing force D.Empty feeding pressing force D is now the MIN pressing force of the degree that the cloth clamped by feeding plate 21 and presser feet 22 does not offset, and is the pressing force that successfully can carry out empty feeding described later.Such as, as this sky feeding pressing force D, it is the pressing force making the feeding pressing force A same degree in control with each pin above-mentioned.
(step S13)
The feed motor 40 in Feed servo system portion 23 is driven, carries out making the empty feeding of making precalculated position movement that feeding plate 21 is made to the lock seaming in second button hole.Now, by the pressing force of pressing force adjustment part 24 for presser feet 22, be set to less pressing force, the i.e. empty feeding pressing force D of the degree that the cloth that clamped by feeding plate 21 and presser feet 22 does not offset.Thus, cloth feeding mechanism 17 can be very well and promptly make feeding plate 21 and feeding plate 22 move, and can not produce cloth offset.
(step S14)
Then, lock seaming cloth carrying out second button hole is made.In the lock seaming in button hole is made, make identical with first Buttonhole, the process of making repeatedly carrying out each pin above-mentioned controls (step S1 ~ S7).Therefore, the pressing force of presser feet 22 uses the process of making of each pin above-mentioned control feeding pressing force A, the braking pressing force B in (step S1 ~ S7) and make pressing force C.
(step S15)
Then, judge whether that the lock seaming carrying out next button hole is made.The (YES) when the lock seaming carrying out next button hole is made, till the button hole number arriving the stitch data read, carries out above-mentioned step S12 ~ S14 repeatedly.Thus, the lock seaming carrying out multiple button hole is continuously made.In addition, when the lock seaming not carrying out next button hole is made (no), do not carry out sky feeding and terminate.
As described above, Sewing machines 11 involved according to the present embodiment, by corresponding with the mobile status of the feeding plate 21 utilizing Feed servo system portion 23 to realize and presser feet 22, suitably adjust the pressing force of pressing force adjustment part 24 for presser feet 22, thus the load in Feed servo system portion 23 can be suppressed as far as possible, suppress useless energy ezpenditure.In addition, the flexure etc. of each mechanism section can be suppressed, and carry out movement and the stopping of cloth accurately, and, the feeding plate 21 of just movement and presser feet 22 can be made promptly to brake, can prevent stop position from making precalculated position because inertia does not stop at, excessively move and stop delaying, thereby, it is possible to it is attractive in appearance to make to make achievement.
Specifically, the pressing force of sewing mechanism for each pin is set to, to feeding pressing force A when making the feed motion of precalculated position X movement, braking pressing force B when making the braking maneuver that pre-position stops, when making the most applicable make make pressing force C, feeding pressing force A being set to less than making pressing force C, braking pressing force B being set to larger than making pressing force C.As noted above, by controlling the pressing force of each pin subtly, thus the load in Feed servo system portion 23 can be suppressed as far as possible, can prevent stopping from delaying while suppressing useless energy ezpenditure, overall achievement of making can be made attractive in appearance.
In addition, when carrying out multiple lock seaming and making, by with than when making make the state that the little empty feeding pressing force D of pressing force C presses presser feet 22 under, carry out sky feeding, thus the load in Feed servo system portion 23 can be suppressed as far as possible, suppress useless energy ezpenditure, suppress the flexure etc. of each mechanism section.Thereby, it is possible to making the rapid air-ground feeding in precalculated position and configuring cloth, and can be configured to making precalculated position accurately.
And, based on the positional information of the encoder 40a from feed motor 40, can adjust with the pressing force of the timing of the best to pressing force adjustment part 24.Such as, based on the positional information of the encoder 40a from feed motor 40, infer to brake pressing force B and press presser feet 22 and the braking timing that makes it brake and braking time, can accurately to making precalculated position configuration, suppress the position skew of cloth, make to make achievement attractive in appearance.
In addition, in the above-described embodiment, for making precalculated position X, also can consider the operating lag of inertia and control system, and be set in original make precalculated position before.In the case, pressing force B can be reduced to brake to press presser feet 22 and carry out the braking time of braking.
In addition, to the output timing of the control signal that pressing force switches, preferably consider the operating lag of control system, and it is Zao to be set as comparing summary than the timing needed for the change of pressing force.Thereby, it is possible to suppress the skew caused by the operating lag etc. of control system, with suitable timing, pressing force is switched.
In addition, in the above-described embodiment, based on the positional information from encoder 40a, 70a, FEEDBACK CONTROL is carried out to feed motor 40 and presser foot motor 70, but the control of above-mentioned feed motor 40 and presser foot motor 70, be not limited to use the closed-loop control from the positional information of encoder 40a, 70a, also can be that the driving of feed motor 40 and presser foot motor 70 is predicted, opened loop control feed motor 40 and presser foot motor 70 being driven with the command value set.
In addition, in the above-described embodiment, exemplify the actuator as cloth feeding mechanism 17, there is the example of feed motor 40 and presser foot motor 70, but as actuator, as long as the mechanism that the pressing force that applies to feeding plate 21 and presser feet 22 is variable can be made, be not limited to motor, such as, also can use solenoid etc.
In addition, in the above-described embodiment, to be illustrated situations of making of lockstitching a border such as button holes, but the present invention is not limited to the Sewing machines that carrying out lockstitches a border makes.
Claims (6)
1. a Sewing machines, it has: cloth feeding mechanism, and it keeps making the cloth of object and this cloth is moved in sewing machine base portion; Sewing mechanism, it utilizes suture needle to make the described cloth by this cloth feeding mechanism movement; And control device, it controls described cloth feeding mechanism and described sewing mechanism,
The feature of this Sewing machines is,
Described cloth feeding mechanism has:
Feeding plate, it is configured in the upper surface in described sewing machine base portion;
Presser feet, it is configured in the upper surface of described feeding plate across described cloth;
Feed servo system portion, it makes described feeding plate move in described sewing machine base portion; And
Pressing force adjustment part, it presses described presser feet from top,
Described control device is corresponding with the mobile status of the described feeding plate realized by described Feed servo system portion and described presser feet, adjusts the pressing force of described pressing force adjustment part for described presser feet.
2. Sewing machines according to claim 1, is characterized in that,
Described control device carries out following making and processes control, namely, making described feeding plate to when making the feed motion of precalculated position movement, described pressing force adjustment part is set to feeding pressing force for the pressing force of described presser feet, make described feeding plate described make pre-position stop braking maneuver time, described pressing force adjustment part is set to braking pressing force for the pressing force of described presser feet, the pin that carries out to cloth falling make action time, described pressing force adjustment part is set to for the pressing force of described presser feet and makes pressing force.
3. Sewing machines according to claim 2, is characterized in that,
Described feeding pressing force is set to than described that to make pressing force little by described control device, described braking pressing force is set to than described that to make pressing force large.
4. the Sewing machines according to Claims 2 or 3, is characterized in that,
Described control device controls to be formed behind button hole making process described in passing through,
Described Feed servo system portion is driven, carries out the empty feeding of making precalculated position movement making described feeding plate to next button hole,
After described empty feeding, perform to form next button hole by making process described in carrying out and controlling make control continuously,
The pressing force of described presser feet during described empty feeding is set to sky feeding pressing force,
Described empty feeding pressing force is set to than described that to make pressing force little.
5. Sewing machines according to any one of claim 1 to 3, is characterized in that,
Described Feed servo system portion has the position detection part detected the position of described feeding plate,
Described control device, based on the positional information from described position detection part, adjusts the pressing force of described pressing force adjustment part.
6. Sewing machines according to claim 4, is characterized in that,
Described Feed servo system portion has the position detection part detected the position of described feeding plate,
Described control device, based on the positional information from described position detection part, adjusts the pressing force of described pressing force adjustment part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410379538.8A CN105316875B (en) | 2014-08-04 | 2014-08-04 | Sewing machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410379538.8A CN105316875B (en) | 2014-08-04 | 2014-08-04 | Sewing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105316875A true CN105316875A (en) | 2016-02-10 |
| CN105316875B CN105316875B (en) | 2019-12-06 |
Family
ID=55245137
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410379538.8A Active CN105316875B (en) | 2014-08-04 | 2014-08-04 | Sewing machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105316875B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106087296A (en) * | 2016-08-30 | 2016-11-09 | 天津市中马骏腾精密机械制造有限公司 | A kind of sewing device locking system |
| CN107881658A (en) * | 2016-09-30 | 2018-04-06 | 兄弟工业株式会社 | The control method of sewing machine and sewing machine |
| CN110306295A (en) * | 2018-03-20 | 2019-10-08 | 兄弟工业株式会社 | Sewing machine |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11207067A (en) * | 1998-01-19 | 1999-08-03 | Barudan Co Ltd | Fabric pressing device for sewing machine |
| CN1397673A (en) * | 2001-06-30 | 2003-02-19 | 大和缝纫机制造株式会社 | Cloth pressuring device of sewing machine |
| CN1408923A (en) * | 2001-09-20 | 2003-04-09 | 重机公司 | Sewing machine for locking button hole |
| CN1676716A (en) * | 2004-03-31 | 2005-10-05 | 兄弟工业株式会社 | Presser foot lifting device for sewing machine |
| CN101713130A (en) * | 2008-10-03 | 2010-05-26 | Juki株式会社 | Seamer |
| JP2010213867A (en) * | 2009-03-16 | 2010-09-30 | Suzuki Seisakusho:Kk | Hand stitch sewing machine for a-single yarn lock sewing |
| CN202107876U (en) * | 2011-05-25 | 2012-01-11 | 浙江万维机械有限公司 | Tuning type pressure foot pressure adjustment device |
| CN102418244A (en) * | 2010-09-27 | 2012-04-18 | 兄弟工业株式会社 | Sewing machine and control method thereof |
| CN202380239U (en) * | 2011-10-31 | 2012-08-15 | Juki株式会社 | Sewing machine |
| CN103710905A (en) * | 2012-09-28 | 2014-04-09 | Juki株式会社 | Button hole catcher sewing machine |
-
2014
- 2014-08-04 CN CN201410379538.8A patent/CN105316875B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11207067A (en) * | 1998-01-19 | 1999-08-03 | Barudan Co Ltd | Fabric pressing device for sewing machine |
| CN1397673A (en) * | 2001-06-30 | 2003-02-19 | 大和缝纫机制造株式会社 | Cloth pressuring device of sewing machine |
| CN1408923A (en) * | 2001-09-20 | 2003-04-09 | 重机公司 | Sewing machine for locking button hole |
| CN1676716A (en) * | 2004-03-31 | 2005-10-05 | 兄弟工业株式会社 | Presser foot lifting device for sewing machine |
| CN101713130A (en) * | 2008-10-03 | 2010-05-26 | Juki株式会社 | Seamer |
| JP2010213867A (en) * | 2009-03-16 | 2010-09-30 | Suzuki Seisakusho:Kk | Hand stitch sewing machine for a-single yarn lock sewing |
| CN102418244A (en) * | 2010-09-27 | 2012-04-18 | 兄弟工业株式会社 | Sewing machine and control method thereof |
| CN202107876U (en) * | 2011-05-25 | 2012-01-11 | 浙江万维机械有限公司 | Tuning type pressure foot pressure adjustment device |
| CN202380239U (en) * | 2011-10-31 | 2012-08-15 | Juki株式会社 | Sewing machine |
| CN103710905A (en) * | 2012-09-28 | 2014-04-09 | Juki株式会社 | Button hole catcher sewing machine |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106087296A (en) * | 2016-08-30 | 2016-11-09 | 天津市中马骏腾精密机械制造有限公司 | A kind of sewing device locking system |
| CN107881658A (en) * | 2016-09-30 | 2018-04-06 | 兄弟工业株式会社 | The control method of sewing machine and sewing machine |
| CN107881658B (en) * | 2016-09-30 | 2020-04-14 | 兄弟工业株式会社 | Sewing machine and control method of sewing machine |
| CN110306295A (en) * | 2018-03-20 | 2019-10-08 | 兄弟工业株式会社 | Sewing machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105316875B (en) | 2019-12-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103710905B (en) | Buttonholing machine | |
| CN101514511B (en) | Button-sewing machine | |
| CN101713130B (en) | Seamer | |
| JP4624169B2 (en) | Sewing machine feeder | |
| JP2009089833A (en) | Cloth feeder of sewing machine | |
| CN105316875A (en) | Sewing machine | |
| CN101864644A (en) | Upward and downward feeding sewing machine | |
| CN107227566B (en) | Cloth grasping device | |
| CN103603147B (en) | Positioning device and sewing machine having same | |
| JPH07178272A (en) | Device for adjusting the height of inner presser of sewing machine | |
| JP5142568B2 (en) | Sewing machine presser foot | |
| KR20030051314A (en) | Stitching device for sewing machine | |
| CN106930009B (en) | Automatic zipper sewing device, sewing machine and sewing method | |
| CN101100788A (en) | Sewing machine | |
| KR100876706B1 (en) | Pouch Cloth Feeder for Edge Decorative Sewing Machine | |
| CN101643977B (en) | Band ring material supply device | |
| JP2014064825A (en) | Sewing machine | |
| JP2009142377A (en) | Middle presser device of sewing machine | |
| JP2016154776A (en) | Sewing machine | |
| JP2009072428A (en) | Center presser foot device of sewing machine | |
| JP2014008103A (en) | Sewing machine and upper feed device | |
| KR20040094321A (en) | A sewing machine | |
| CN102477667A (en) | Cloth feed control device of rolling / quilting embroidering machine | |
| KR101027591B1 (en) | Work clamp lifting device in sewing machine | |
| CN101550638B (en) | Belt loop slackening apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |