CN102140737B - Presser foot device of sewing machine - Google Patents
Presser foot device of sewing machine Download PDFInfo
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- CN102140737B CN102140737B CN 201110037346 CN201110037346A CN102140737B CN 102140737 B CN102140737 B CN 102140737B CN 201110037346 CN201110037346 CN 201110037346 CN 201110037346 A CN201110037346 A CN 201110037346A CN 102140737 B CN102140737 B CN 102140737B
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Abstract
A presser foot device of a sewing machine of the invention comprises an operation part for operating the ascending and the descending of a press plate. The press plate ascends and descends by the driving of a driving part. A control part controls the driving of the driving part according to an operating position of the operation part. The press plate moves toward a middle position by the transition of the operating position of the operation part from a first region to a second region. When the operating position of the operation part is located in the second region, the press plate moves between the middle position and a press position. An operator operates the operation part in the second region, and finely adjusts the position of the press plate between the middle position and the press position. The press plate contacts a worked fabric reliably. The operator can easily perform the positioning of the worked fabric.
Description
Technical field
The present invention relates to a kind of presser foot that makes rises, descends and press the cloth-pressing device of processing cloth.
Background technology
Sewing machines comprises the cloth-pressing device of pressing processing cloth.Cloth-pressing device comprises the presser foot that rises, descends by operating portion is operated.The operator operates operating portion by knee or pin.The presser foot that descends becomes the pressing position of pressing processing cloth on base.The operator implements to process making of cloth.The presser foot that rises becomes the lifting position of leaving base.The operator configures processing cloth on base, after sewing finishing, the processing cloth on base is being removed.
The cloth-pressing device of the Sewing machines of 2002 No. 286689 records of Japanese Laid-Open Patent Publication comprises position sensor, actuator and control part.Position sensor detects the operating position of operating portion.Actuator drives presser foot and rises, descends.Control part comes drive actuator according to the detection of position sensor.Presser foot moves between pressing position, centre position, lifting position by the driving of actuator.The centre position is set between pressing position and lifting position.The presser foot that is positioned at the centre position is gentlier pressed the processing cloth on base.The operator mediates presser foot, and mobile processing cloth also is located.
Sewing machines can be made the different processing cloth of thickness.Making thicker processing cloth or many processing cloth are gathered into folds when making, the presser foot that mediates is pressed processing cloth than the important place, and therefore, processing cloth is difficult to mobile, the positioning operation difficulty that becomes.When making thinner processing cloth, the presser foot that mediates is not pressed processing cloth, and therefore, processing cloth moves freely, and it is difficult that positioning operation becomes.The operator need to change the centre position according to the thickness of processing cloth.The press device of Sewing machines is in the past taken time and energy when the change centre position, and workability is relatively poor.
Summary of the invention
The object of the present invention is to provide a kind of cloth-pressing device of Sewing machines of the location that can easily implement the different processing cloth of thickness.
the cloth-pressing device of the Sewing machines of technical scheme 1 comprises: can and leave presser foot mobile between the lifting position of processing cloth at the pressing position of pressing processing cloth, drive the drive division that this presser foot rises, descends, operate the operating portion that above-mentioned presser foot rises, descends, the position detector that the operating position of this operating portion is detected, control the control part of the driving of above-mentioned drive division according to the testing result of this position detector, wherein, set the centre position between above-mentioned lifting position and above-mentioned pressing position, operating position as aforesaid operations section, setting comprises the first area that operates the starting position, with this first area continuously and the second area larger than this first area, when above-mentioned position detector detects from above-mentioned first area towards above-mentioned second area transition, above-mentioned control part is controlled the driving of above-mentioned drive division, so that above-mentioned presser foot moves towards above-mentioned centre position from above-mentioned lifting position, when above-mentioned position detector detects operating position in second area, above-mentioned control part is controlled the driving of above-mentioned drive division, so that above-mentioned presser foot moves between above-mentioned centre position and above-mentioned pressing position.
The operator operates operating portion.Position detector detects the operating position of operating portion.When the detected operating position of position detector was transitioned into second area from the first area, presser foot moved to the centre position by the action of control part from lifting position.When position detector detected operating position in second area, presser foot moved between centre position and pressing position by the action of control part.The operator can finely tune the position of presser foot by in second area, operating portion being operated.Presser foot is pressed processing cloth with suitable power.The operator can easily locate processing cloth.
The cloth-pressing device of the Sewing machines of technical scheme 2 comprises the configuration part, centre position that can set above-mentioned centre position.
The operator sets the centre position by the configuration part, centre position.The centre position is set for corresponding with the thickness of processing cloth.Presser foot by move to the centre position be positioned at processing cloth near.The position of presser foot can be between centre position and pressing position than close limit in finely tune.Shorten the positioning time of processing cloth, and workability improves.
In the cloth-pressing device of the Sewing machines of technical scheme 3, above-mentioned control part makes the amount of movement of the above-mentioned presser foot between above-mentioned centre position and above-mentioned pressing position less in above-mentioned centre position side, and is larger in above-mentioned pressing position side.
The amount of movement of presser foot is less near the centre position.The operator can finely tune the position to presser foot near the centre position by in second area, operating portion being operated.The location of processing cloth also can more easily be implemented.
The cloth-pressing device of the Sewing machines of technical scheme 4 comprises the thick detector of cloth that the thickness to above-mentioned processing cloth detects, and above-mentioned centre position is set according to the testing result of the thick detector of above-mentioned cloth in configuration part, above-mentioned centre position.
The thick detector of cloth detects the thickness of processing cloth.The centre position is set according to the testing result of the thick detector of cloth in the configuration part, centre position.The operator needn't set the centre position, and workability improves.
In the cloth-pressing device of the Sewing machines of technical scheme 5, during operating position in above-mentioned position detector detects above-mentioned second area, above-mentioned control part is controlled the driving of above-mentioned drive division, so that above-mentioned presser foot is in above-mentioned centre position and be equivalent to move between the position of the detected processing cloth of the thick detector of above-mentioned cloth thickness.
When position detector detects operating position in second area, presser foot by the action of control part in the centre position and be equivalent to process between the position of cloth thickness and move.The position of presser foot can near finely tuning than the close limit centre position.Shorten the positioning time of processing cloth, and workability improves.
Description of drawings
Fig. 1 is the side view that comprises the Sewing machines of cloth-pressing device.
Fig. 2 is part (rear portion) stereogram of Sewing machines.
Fig. 3 is the side view of the internal structure of Sewing machines.
Fig. 4 is the block diagram of the control system of Sewing machines.
Fig. 5 is the front view of guidance panel.
Fig. 6 is the key diagram that detects voltmeter.
Fig. 7 is the key diagram of pressing altimeter.
Fig. 8 means the flow chart of the action of control part.
Fig. 9 A, Fig. 9 B mean the key diagram of the relation between the height of the operating position of operating pedal and presser foot.
Figure 10 is that the flow chart of processing is set in the centre position.
Figure 11 is the block diagram of control system of the Sewing machines of variation.
Figure 12 be variation operating pedal operating position and press the key diagram of the relation between height.
Figure 13 be variation operating pedal operating position and press the key diagram of the relation between height.
The specific embodiment
Below, with reference to the accompanying drawing that represents preferred embodiment, the present invention is described.The direction (front, rear, left and right) of using in following explanation represents with arrow in Fig. 1～Fig. 3.
As shown in Figure 1, Sewing machines 1 comprises base 2, column 5, horn 6, and is arranged on platen 8.Base 2 comprises main part 3, cylinder section 4.Cylinder section 4 extends towards the place ahead of main part 3.Column 5 extends towards the top from the rear portion of main part 3.Horn 6 extends towards the place ahead from the top of column 5.
Shank 10, eedle 11 rise, descend by the driving of motor 9 (with reference to Fig. 2).Motor 9 is installed on the rear wall top of column 5, and is surrounded by lid 30 (with reference to Fig. 1).Motor 9 drives shank 10 by the main shaft (not shown) in horn 6.
Argue for the sake of arguing on descending and 47 will press downwards with the pressing plate 28 of the plate 47a butt of lower end.Depression bar 23 swings centered by back shaft 22 clockwise.The leading section of depression bar 23 rises.Presser foot 24 rises along brace table 21a, leaves to carry fabric swatch 16.
On argue for the sake of arguing and 47 rise, descend by the driving of compress motor 32.As shown in Figure 2, compress motor 32 is fixed in the fixed frame 31 of U font.Fixed frame 31 makes progress open side, is installed on the rear wall bottom of column 5.Compress motor 32 and fixed frame 31 are surrounded by lid 30 (with reference to Fig. 1) together with superposed motor 9.
As shown in Figures 2 and 3, fixed frame 31 is fixed with the bar back shaft 40 of left and right directions on the top of its sidewall 31a, 31b.Bar back shaft 40 supports to the drive rod 41 of L font rotatably.As shown in Figure 3, drive rod 41 comprises the underarm 41a that extends towards the below and the upper arm 41b that extends towards the top.Underarm 41a comprises roller 42 in its bottom.Roller 42 can be rotated around the axle of left and right directions, from the cam surface butt of the place ahead and compress cam 36.
The upper end of upper arm 41b is connected with the end wall of column 5 by extension spring 49.49 couples of upper arm 41b of extension spring apply spring force forward.49 pairs of drive rod 41 application of forces of extension spring and it is rotated counterclockwise centered by bar back shaft 40 are pressed in the roller 42 of underarm 41a lower end the cam surface of compress cam 36.
The upper end of upper arm 41b is connected with the rearward end of connecting rod 43.Connecting rod 43 extends towards the place ahead horn 6 is interior.The leading section of connecting rod 43 is connected with the follower lever 45 of L font.Follower lever 45 is supported in the back shaft 44 of left and right directions rotationally, and is disposed at 47 the rear side of arguing for the sake of arguing.Follower lever 45 comprises the underarm 45a that extends towards the below and the forearm 45b that extends towards the place ahead.The leading section of connecting rod 43 is connected with the bottom of underarm 45a.The leading section of forearm 45b by square 48 with on argue for the sake of arguing and 47 be connected.
Square 48 can be rotated centered by the pin 46 of left and right directions, and can with respect on argue for the sake of arguing and 47 slide along fore-and-aft direction.
Compress motor 32 is to have for example stepper motor of the resolution ratio of 800 pulses.Compress motor 32 can be also other electro-motors such as DC servo motor.
As shown in Figure 4, compress motor 32 has the encoder 32E that detects position of rotation.Encoder 32E is connected with control part 60.Encoder 32E rotates a circle and exports 800 code signals.Control part 60 drives compress motor 32 with the code signal of encoder 32E as feedback information.
Compress cam 36 rotates towards positive and negative both direction by the driving of compress motor 32.The compress cam 36 of forward is by lifting on the underarm 41a of roller 42 with drive rod 41.Drive rod 41 swings clockwise.The swing of drive rod 41 is delivered to the underarm 45a of follower lever 45 by upper arm 41b, connecting rod 43.Follower lever 45 counter-clockwise swings.The forearm 45b front end of follower lever 45 descends.On argue for the sake of arguing and 47 descend, as mentioned above, presser foot 24 rises.
The compress cam 36 that reverses leaves roller 42.Drive rod 41 is because of the spring force counter-clockwise swing of extension spring 49.Due to drive rod 41 counter-clockwise swings, so connecting rod 43 moves towards the place ahead.Because connecting rod 43 moves towards the place ahead, so follower lever 45 swings clockwise, on argue for the sake of arguing and 47 rise.On the argue for the sake of arguing plate 47a of 47 lower ends leave pressing plate 28.Depression bar 23 swings clockwise because of the spring force of stage clip 27, and the leading section of depression bar 23 descends.Presser foot 24 descends, and will process cloth and carry on fabric swatch 16 by being pressed in.Compress motor 32 is equivalent to drive division.
As shown in Figure 1, Sewing machines 1 comprises operating pedal 57 (being equivalent to operating portion).Operating pedal 57 has the foot pedal 57a that can swing around the axle of level on the base station of floor being arranged at.The leading section of foot pedal 57a is connected with the leading section of swing arm 52 by connecting rod 56.The base portion supports of swing arm 52 is in the axle 51 of potentiometer 55.Swing arm 52 and potentiometer 55 are disposed in case B under platen 8.Swing arm 52 by the spring force of extension spring 53 towards the top application of force.
The operator lower foot pedal 57a that tramps with one's feet operates operating pedal 57.Due to the leading section decline of foot pedal 57a, so the leading section of 56 pairs of swing arms 52 of connecting rod applies downward power.Swing arm 52 swings clockwise against the spring force of extension spring 53.The axle 51 of potentiometer 55 rotates together with swing arm 52, and the output of potentiometer 55 changes.
Operating portion is not limited to operating pedal 57.Operating portion by pressing operations such as operator's knee, hands can be set.Operating portion can be made of a plurality of switches.
As shown in Figure 4, potentiometer 55 is connected with control part 60.Control part 60 comes the operating position of calculating operation pedal 57 by the output signal of potentiometer 55.Potentiometer 55 is equivalent to position detector.Control part 60 drives compress motor 32 according to the operating position of operating pedal 57.The operator rises, descends by operating pedal 57 being operated presser foot 24.
As shown in Figure 4, control part 60 is the computers that comprise input/output interface (I/O) 61, CPU62, ROM63, RAM64, nonvolatile memory 65.CPU62 is according to the control program action that is stored in ROM63, and by this, the whole action of 60 pairs of Sewing machiness 1 of control part is controlled.
The encoder 32E of above-mentioned potentiometer 55 and compress motor 32 is connected with input/output interface 61.Input/output interface 61 attended operation panels 66, drive loop 68～71, directions X origin sensor 74, Y-direction origin sensor 75.
As shown in Figure 5, guidance panel 66 comprises reset key 66a, height setting key 66b, a plurality of function key 66c～66f, upwarding key 66h, down Arrow 66g, display lamp, small-sized display part.The operator sets the position of presser foot 24 by the operation of height setting key 66b in the numerical value mode.The operator increases setting numerical value by the operation of upwarding key 66h.The operator reduces setting numerical value by the operation of down Arrow 66g.
Directions X origin sensor 74 detects this situation of initial point that feeding table 13 is positioned at left and right directions (directions X).Y-direction origin sensor 75 detects this situation of initial point that feeding table 13 is positioned at fore-and-aft direction (Y-direction).
The centre position of nonvolatile memory 65 storage presser foots 24.The centre position is set between pressing position and lifting position.Pressing position is that presser foot 24 descends, carrying the position of pressing processing cloth on fabric swatch 16.Lifting position is that presser foot 24 rises and farthest leaves the position of carrying fabric swatch 16.As mentioned below, height setting key 66b, upwarding key 66h, down Arrow 66g that guidance panel 66 is located in operator's operation set the centre position.The centre position that is stored in nonvolatile memory 65 can be rewritten by electrical means.Nonvolatile memory 65 also continues the centre position that maintenance is stored after dump.The interim storage of RAM64 is used for carrying out the stitch data made and the operation result of CPU62.In case of necessity, RAM64 storage pointer, count value.The ROM63 storage detects voltmeter T1 (with reference to Fig. 6) and presses altimeter T2 (with reference to Fig. 7).
Detect voltmeter T1 and be storage with the detection voltage of the potentiometer 55 (table of the scaled value of the operating position of 0V～5V) be converted into operating pedal 57.CPU62 is applied to detect voltmeter T1 with the output valve of potentiometer 55, obtains the operating position of operating pedal 57.
Scaled value is multiply by suitable coefficient on voltage value and round and the value that obtains detecting.As shown in Figure 6, the operating position of operating pedal 57 comprises neutralization zone (being equivalent to the first area), working region (being equivalent to second area), area pressed, makes the zone.CPU62 processes scaled value with 8bit (0～255).The neutralization zone comprises the operation starting position of operating pedal 57, is that scaled value is the zone of " 0～152 ".The working region is larger than the neutralization zone, is that scaled value is the zone of " 153～190 ".Area pressed is larger than the working region, is that scaled value is the zone of " 191～203 ".Making the zone larger than area pressed, is that scaled value is the zone of " 204～255 ".Operating pedal 57 by the operator trampling the operation and by neutralization zone, working region, area pressed, make the zone the order transition.
First border of using in following explanation is the boundary position (scaled value is 153) that is transitioned into the working region from the neutralization zone.The second boundary is the boundary position (scaled value is 191) that is transitioned into area pressed from the working region.The 3rd border is to be transitioned into from area pressed the boundary position (scaled value is 204) of making the zone.
Pressing altimeter T2 is height and position (the pressing height) table corresponding with the number of drive pulses (pile-up pulse number) of compress motor 32 that makes presser foot 24.Pressing height for 0.0mm, is 20.0mm in above-mentioned lifting position (position that presser foot 24 rises to greatest extent) at above-mentioned pressing position (presser foot 24 and the position of carrying fabric swatch 16 butts).The pile-up pulse number is 0 at pressing position, is 200 in lifting position.The every increase by 10 of number of drive pulses, presser foot 24 1mm that just rises.
The CPU62 of control part 60 controls Sewing machines 1 by following step (with reference to Fig. 8).
When scaled value arrives the neutralization zone (S12: be), CPU62 is set as above-mentioned pressing position the current location (S14) of presser foot 24, above-mentioned lifting position is set as the target location (S16) of presser foot 24.Current location and target location are set by the pile-up pulse number of compress motor 32.Current location becomes the pile-up pulse number (=0) corresponding with pressing position.The target location becomes the pile-up pulse number (=200) corresponding with lifting position.The action of top CPU62 is the initial setting action when the operator has carried out making operation to power switch.
CPU62 compares (S18) to current location and target location.When current location and target location there are differences (S18: be), CPU62 drives compress motor 32 with the umber of pulse of the difference that is equivalent to current location and target location, makes presser foot 24 move (S20) towards the target location.When the operator had carried out making operation to power switch, presser foot 24 moved towards lifting position by the action of CPU62.Under this state, the operator is being carried configuration processing cloth on fabric swatch 16.
CPU62 is applied to detect voltmeter T1 with the detection voltage of potentiometer 55, obtains corresponding scaled value (S22).CPU62 judges whether the scaled value that obtains belongs to neutralization zone (S24).When scaled value belongs to the neutralization zone (S24: be), CPU62 is set as lifting position the target location (S26) of presser foot 24.CPU62 makes to process and is transitioned into S18, repeatedly carries out above-mentioned action.The target location is lifting position, and is consistent with current location.S18 is judged to be "No".Presser foot 24 keeps lifting position.
When the scaled value that obtains does not belong to the neutralization zone (S24: no), CPU62 judges whether scaled value belongs to working region (S28).When scaled value belongs to the working region (S28: be), CPU62 implements computing described later, operation result is set as the target location (S30) of presser foot 24.CPU62 makes to process and is transitioned into S18.The target location is different from current location, and S18 is judged to be "Yes".As mentioned below, presser foot 24 drops to the centre position that is set between lifting position and pressing position, moves between this centre position and pressing position.
When the scaled value that obtains does not belong to the working region (S28: no), CPU62 judges whether scaled value belongs to area pressed (S32).When scaled value belongs to area pressed (S32: be), CPU62 is set as pressing position the target location (S34) of presser foot 24.CPU62 makes to process and is transitioned into S18.The target location is different from current location.S18 is judged to be "Yes".Presser foot 24 moves towards the pressing position that is set as the target location by S34, presses the processing cloth on ballast fabric swatch 16.
Scaled value belongs to (S32: no) when making the zone, and CPU62 judges whether the current location of presser foot 24 is pressing position (S36).When current location is not pressing position (S36: be), CPU62 drives compress motor 32 with the umber of pulse of the difference that is equivalent to current location and pressing position, makes presser foot 24 move (S38) towards pressing position.
By operating pedal 57 is operated to the working region, presser foot 24 moves to pressing position.Sometimes the operator can be with operating pedal 57 in the situation that be not operated to via the working region and make the zone.At this moment, move to the reliable in action of presser foot 24 by S36 and S38 pressing position.
Make the zone by operating pedal 57 is operated to, CPU62 carries out and makes action (S40).In making action, CPU62 drives motor of sewing machine 9, and drives X motor 72 and Y motor 73.Eedle 11 rises, descends by the driving of motor of sewing machine 9.Shuttle 14 synchronously rotates with the rising of eedle 11, decline by the driving of motor of sewing machine 9.Ground, all around moves processing cloth by the driving of X motor 72 and Y motor 73.Processing cloth is made by the rotary oscillation of rising, decline and the shuttle 14 of eedle 11.
When finishing to make, the operation of operator's shut-down operation pedal 57.CPU62 finishes to make action, obtains the scaled value corresponding with the detection voltage of potentiometer 55 (S42).Whether the scaled value that the CPU62 judgement is obtained belongs to neutralization zone (S44).When scaled value does not belong to the neutralization zone (S44: no), CPU62 continues to obtain scaled value, waits for that scaled value arrives the neutralization zone.When scaled value belongs to the neutralization zone (S44: be), CPU62 sets lifting position (S46) to the target location of presser foot 24.CPU62 makes to process and is transitioned into S18.The target location is different from current location.S18 is judged to be "Yes".Presser foot 24 moves towards the lifting position that is set as the target location.Presser foot 24 keeps lifting position, until operating pedal 57 is operated to the working region or makes the zone.
With reference to Fig. 9 A, Fig. 9 B, the action of presser foot 24 is described.The lifting position of presser foot 24 is 20.0mm, and pressing position is 0.0mm.Centre position between lifting position and pressing position is set as 7.0mm.
The operator carries out making operation to power switch when using Sewing machines 1.The making operation of power switch in the situation that operating pedal 57 is not operated is carried out.Presser foot 24 is positioned at pressing position.The scaled value that obtains in S10 is 0.To be judged to be the neutralization zone to CPU62 in S12.The pile-up pulse number (=0) that CPU62 will be corresponding with pressing position in S14 is set as current location.The pile-up pulse number (=200) that CPU62 will be corresponding with lifting position in S16 is set as the target location.To be judged to be the target location different from current location for CPU62 in S18.CPU62 is towards 32 output 200 pulses of compress motor in S20.Presser foot 24 moves towards lifting position.
When the operator did not operate operating pedal 57, the scaled value that obtains in S22 was 0.CPU62 is after the judgement of S24, and pile-up pulse number (=200) that will be corresponding with lifting position in S26 is set as the target location.To be judged to be the target location identical with current location for CPU62 in S18.As shown in Fig. 9 A, presser foot 24 is kept lifting position.The operator is being carried configuration processing cloth on fabric swatch 16.
Sometimes the operator can carry out making operation to power switch under the state that has operated operating pedal 57.In this case, CPU62 is judged to be and is not the neutralization zone in S12.CPU62 makes to process and is transitioned into S10 and standby, until the operation of shut-down operation pedal 57.Presser foot 24 does not move.Sewing machines 1 is not carried out and is made.
After configuration processing cloth, the operator with operating pedal 57 low speed be operated to the first border.The scaled value that obtains in S22 increases.When the operating position of operating pedal 57 surpassed the first border, S24 was judged to be "No".CPU62 implements the judgement of S28.When the operating position of operating pedal 57 was the working region, the pile-up pulse number (=70) that CPU62 will be corresponding with the centre position in S30 was set as the target location.To be judged to be the target location different from current location for CPU62 in S18.CPU62 is towards the 32 output 130 (=200-70) pulses of compress motor in S20.Presser foot 24 descends at high speed, towards the centre position (=7mm) mobile.
When the operating position of operating pedal 57 surpasses the first border, in S30 the target location of CPU62 computing presser foot 24 (pile-up pulse number).The pile-up pulse number is between the first border and the second boundary, as finding the solution with the value on straight line that pile-up pulse number (=0) corresponding to pressing position is connected corresponding to the pile-up pulse number (=70) in centre position.
As shown in Fig. 9 B, the every increase by 1 of scaled value is just the pile-up pulse number in the working region reduces 2.Neutralization zone, area pressed and the pile-up pulse number of making in the zone are constant (200 or 0).Presser foot 24 is according to the operation of the operating pedal 57 in the working region, and low speed moves between centre position and pressing position.
The operator operates operating pedal 57 in the working region.The height and position of presser foot 24 can be in the centre position (=7mm) and pressing position (=regulate arbitrarily between 0mm).The operator regulates the height and position of presser foot 24 according to the thickness of processing cloth.Presser foot 24 is gentlier pressed the processing cloth on ballast fabric swatch 16.The operator is by making processing cloth slide with carrying between fabric swatch 16 at presser foot 24, can be easily and correctly will process cloth and locate.
When the operating position of operating pedal 57 surpassed the second boundary, the pile-up pulse number (=0) that CPU62 will be corresponding with pressing position in S34 was set as the target location.To be judged to be the target location different from current location for CPU62 in S18.CPU62 drives compress motor 32 with the umber of pulse of the difference that is equivalent to target location and current location in S20.Presser foot 24 moves towards pressing position, presses the processing cloth that carries on fabric swatch 16 than the important place.
When the operating position of operating pedal 57 surpassed the 3rd border, CPU62 began to make action.Presser foot 24 keeps pressing position.At this moment, CPU62 carries out the action of S36 and S38.As mentioned above, presser foot 24 moves to pressing position reliably.
As mentioned above, the centre position can be set by height setting key 66b, upwarding key 66h, the down Arrow 66g that guidance panel 66 is located in operation.The CPU62 of control part 60 carries out the centre position by following step (with reference to Figure 10) and sets processing.
The operator operates the height setting key 66b of guidance panel 66.By this operation, CPU62 begins the centre position and sets processing.
CPU62 reads intermediate positional data (S61) from nonvolatile memory 65.CPU62 drives compress motor 32 according to intermediate positional data, makes presser foot 24 (position corresponding with intermediate positional data) movement (S62) towards the centre position.
CPU62 waits for the operation (S63) of upwarding key 66h or down Arrow 66g.When key operation is arranged (S63: be), judgement be upwarding key 66h operation, be the operation of down Arrow 66g or the operation (S64, S67, S70) of height setting key 66b.
Operator's confirmation moves to the height and position of the presser foot 24 in centre position.When height and position was low, the operator operated upwarding key 66h.When height and position was higher, the operator operated down Arrow 66g.When height and position was suitable, the operator operated height setting key 66b.
When being the operation of upwarding key 66h (S64: be), CPU62 increases centre position (S65).CPU62 drives compress motor 32 according to the centre position that increases.Presser foot 24 rising ormal weights (for example 1mm) (S66).CPU62 makes to process and is transitioned into S63, the key operation below waiting for.
When the operation of down Arrow 66g is arranged (S67: be), CPU62 reduces centre position (S68).CPU62 drives compress motor 32 according to the centre position of reducing.Presser foot 24 decline ormal weights (for example 1mm) (S69).CPU62 makes to process and is transitioned into S63, the key operation below waiting for.
When being the operation of height setting key 66b (S70: be), the CPU62 updated stored is in the intermediate positional data (S71) of nonvolatile memory 65, finishes the centre position and sets and process.When not being the operation of height setting key 66b (S70: no), CPU62 makes to process and is transitioned into S63, the key operation below waiting for.Sometimes the operator understands maloperation height setting key 66b, upwarding key 66h, down Arrow 66g key in addition.CPU62 gets rid of the maloperation of key by the judgement of S70.
The operator regulates the centre position of presser foot 24 by operation upwarding key 66h or down Arrow 66g as unit take ormal weight (for example 1mm).The operator operates upwarding key 66h or down Arrow 66g under the state that presser foot 24 is moved to the centre position.The operator can correctly regulate the centre position.
To partial alteration above the variation of embodiment describe.
As shown in figure 11, the cloth-pressing device of variation comprises the thick detector 76 of cloth.The thick detector 76 of cloth detects the thickness that carries the processing cloth on fabric swatch 16.The thick detector 76 of cloth is connected with the input/output interface 61 of control part 60.The structure of control part 60 is identical with the control part of embodiment 60.
The output signal of CPU62 detector 76 thick in cloth is come the thickness of calculating processing cloth.CPU62 sets the centre position of presser foot 24 according to the processing cloth thickness that calculates.The operator needn't set by the aforesaid operations of guidance panel 66 centre position of presser foot 24, and transaction capabilities improves.
As shown in Fig. 9 A, the presser foot 24 of embodiment the centre position (=7mm) to pressing position (=0mm) between to move with the proportional amount of movement of the operational ton of operating pedal 57.As shown in figure 12, the amount of movement of the presser foot 24 of variation is less near the centre position, and larger near pressing position.The operator can finely tune the position of presser foot 24 near the centre position by operating pedal 57 is operated.The operator can easily implement to process the location of cloth.
In embodiment, the centre position of presser foot 24 (=7mm) lifting position (=20mm) and pressing position (=set one between 0mm).The centre position of presser foot 24 also can be set a plurality of.Have two centre positions in the variation of Figure 13, namely centre position H (=7mm), centre position L (=5mm).
As shown in figure 13, when the operating position of operating pedal 57 arrived the first border, presser foot 24 moved to centre position H.Presser foot 24 moves according to the operation of the operating pedal 57 in the working region between centre position H and centre position L.When the operating position of operating pedal 57 arrived the second boundary, presser foot 24 moved to pressing position.The operator finely tunes the position of presser foot 24 between centre position H and centre position L by in the working region, operating pedal 57 being operated.
Be set near the operation of the testing result of the centre position L detector 76 thick in cloth of pressing position or guidance panel 66 and be equivalent to process on the position of cloth thickness.When the thickness of processing cloth was thicker, presser foot 24 was mobile as shown in solid line.When processing the thinner thickness of cloth, centre position L near pressing position (for example, L=3mm).Presser foot 24 is mobile as shown in chain-dotted line.Presser foot 24 contacts processing cloth reliably by moving to centre position L.Therefore, the operator can easily implement to process the location of cloth.Processing cloth is thick and when soft, even presser foot 24 is positioned at the height identical with the thickness of processing cloth, sometimes also can cause presser foot 24 can't press processing cloth because of the distortion of processing cloth.Therefore, the position that is equivalent to process cloth thickness also can be set as the slightly low position of thickness than processing cloth.
Claims (5)
1. the cloth-pressing device of a Sewing machines, comprising: can and leave presser foot mobile between the lifting position of processing cloth at the pressing position of pressing processing cloth; Drive the drive division that this presser foot rises, descends; Operate the operating portion that described presser foot rises, descends; The position detector that the operating position of this operating portion is detected; Control the control part of the driving of described drive division according to the testing result of this position detector, it is characterized in that,
Set the centre position between described lifting position and described pressing position,
As the operating position of described operating portion, set comprise the first area that operate starting position, with continuous and larger than this first area second area in this first area,
When described position detector detected from described first area towards described second area transition, described control part was controlled the driving of described drive division, so that descending from described lifting position towards described centre position, moves described presser foot,
When described position detector detected operating position in second area, described control part was controlled the driving of described drive division, so that described presser foot moves between described centre position and described pressing position.
2. the cloth-pressing device of Sewing machines as claimed in claim 1, is characterized in that, comprises the configuration part, centre position that can set described centre position.
3. the cloth-pressing device of Sewing machines as claimed in claim 1 or 2, is characterized in that, described control part makes the amount of movement of the described presser foot between described centre position and described pressing position less in described centre position side, and is larger in described pressing position side.
4. the cloth-pressing device of Sewing machines as claimed in claim 1, is characterized in that, comprises the thick detector of cloth that the thickness to described processing cloth detects,
Described centre position is set according to the testing result of the thick detector of described cloth in configuration part, described centre position.
5. the cloth-pressing device of Sewing machines as claimed in claim 4, it is characterized in that, during operating position in described position detector detects described second area, described control part is controlled the driving of described drive division, so that described presser foot is in described centre position and be equivalent to move between the position of the detected processing cloth of the thick detector of described cloth thickness.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010-016355 | 2010-01-28 | ||
| JP2010016355A JP2011152308A (en) | 2010-01-28 | 2010-01-28 | Cloth presser for sewing machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102140737A CN102140737A (en) | 2011-08-03 |
| CN102140737B true CN102140737B (en) | 2013-05-15 |
Family
ID=44408517
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110037346 Expired - Fee Related CN102140737B (en) | 2010-01-28 | 2011-01-28 | Presser foot device of sewing machine |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP2011152308A (en) |
| CN (1) | CN102140737B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105113138A (en) * | 2015-09-20 | 2015-12-02 | 浙江中捷缝纫科技有限公司 | Lifting and pressing pin control device of sewing machine |
| CN105544097B (en) * | 2016-01-27 | 2018-11-23 | 福建亿泰自动化科技有限公司 | A kind of pattern sewing machine material pressing device and pattern sewing machine |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3567274B2 (en) * | 1998-10-02 | 2004-09-22 | ヤマトミシン製造株式会社 | Hollow stitching machine for overlock sewing machine |
| JP2003093773A (en) * | 2001-09-20 | 2003-04-02 | Juki Corp | Buttonhole sewing machine |
| JP4716170B2 (en) * | 2005-04-27 | 2011-07-06 | ブラザー工業株式会社 | Sewing machine presser foot |
| JP5073360B2 (en) * | 2007-05-11 | 2012-11-14 | Ｊｕｋｉ株式会社 | sewing machine |
-
2010
- 2010-01-28 JP JP2010016355A patent/JP2011152308A/en active Pending
-
2011
- 2011-01-28 CN CN 201110037346 patent/CN102140737B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2011152308A (en) | 2011-08-11 |
| CN102140737A (en) | 2011-08-03 |
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