KR101027591B1 - Work clamp lifting device in sewing machine - Google Patents

Abstract

It is an object of the present invention to provide a device for pushing up a sewing machine capable of quickly performing a positioning operation of cloth pressing and a sewing start operation of a sewing machine.

As a means for solving this problem, the pressing device 4 of the sewing machine according to the present invention moves the cloth press 2 to the intermediate position between the cloth press position and the highest position when the pedal 5 is at the neutral position A. In addition, if the pedal is in the forward step position (C), the cloth press moves according to the amount of the front step of the pedal, and when the pedal is stepped down to the step (B) position, the cloth press is moved to the cloth press position. Control means 70 for controlling the moving means and at the same time starting the sewing machine. Therefore, you can easily adjust the height of the cloth press simply by adjusting the amount of stepping on the pedal, and the sewing process can be started automatically without any manipulation of sewing start switch, etc. Because of this, workability can be improved.

Description

WORK CLAMP LIFTING DEVICE IN SEWING MACHINE}             

1 is a perspective view showing a sewing machine according to a first embodiment.

Fig. 2 is a side view of the main portion showing the structure of the sewing mechanism.

3 is a principal part perspective view showing the structure of a carriage drive mechanism;

Fig. 4 is a side view of the main portion showing the structure of the pressing device;

Fig. 5 is a side view of the main portion showing the position of the pedal;

Fig. 6 is a diagram in which the pedal amount of the pedal corresponds to the output voltage of the potentiometer.

7 is a block diagram showing a configuration of a control means.

8 is a flowchart showing processing by the control means.

Fig. 9 shows the relationship between the timing chart A showing the relationship between the position of the pedal and the position of the cloth press and the position of the pedal, the position of the cloth press, and the sewing machine speed in one cycle during the positioning operation of the sewing object. It is the timing chart B shown.

10 is a flowchart showing processing by the control means in the second embodiment.

11 is a main portion side view showing the position of the pedal;

Fig. 12 shows the relationship between the timing chart A showing the relationship between the pedal position and the cloth pressing position in the positioning operation of the to-be-sealed object, the pedal position, the cloth pressing position, and the sewing machine speed in one cycle. This is the timing chart B.

Fig. 13 is a timing chart showing the relationship between the position of the pedal and the position of the cloth press during the positioning operation of the object to be sealed in the third embodiment, the position of the pedal in one cycle, and the position of the cloth press. And a timing chart B showing the relationship between the sewing machine speed.

Fig. 14 is a timing chart showing the relationship between the pedal position and the cloth pressing position in the positioning operation of the to-be-sealed object in the fourth embodiment, the position of the pedal in one cycle, the position of the cloth pressing, and It is a timing chart B which shows the relationship of sewing machine speed.

Fig. 15 is a side view of the main portion showing the position of the pedal in the conventional pushing device;

[Description of Reference Numerals]

A: Neutral position B: Tread position

B1: tread first position B2: tread second position

C: front step 2: press the cloth

3: sewing means (sewing mechanism) 4: pressing device of the sewing machine

5: pedal 40: cloth pressing drive mechanism

48: Press-lift motor 50: Pedal sensor

70: control means

The present invention relates to a pressing device of the sewing machine.

Background Art [0002] In a conventional cycle sewing machine such as a slotting sewing machine, a device for pushing up a sewing machine for moving a cloth pressing portion for pressing an object to be compressed onto a bed to a crimping position and a moving position is arranged.

For example, a two-pedal sewing machine is provided with two pedals at the bottom of a sewing machine table, that is, a worker's foot. When one pedal is pressed forward, the cloth press moves, and the amount of stepping on the pedal is reduced. The pressing part gradually lowers, and when the pedal is released (opening the pedal), the cloth pressing lowers to the crimp position. In addition, the sewing machine main body is started by stepping forward on the other pedal while the cloth pressing part is lowered to the crimping position.

In addition, the device for pushing up the one-pedal sewing machine is omitted, for example, but is configured to move the cloth press across the pressing position and the moving position by a driving motor as disclosed in Japanese Patent Application Laid-Open No. 11-66813. When the pedal is in the neutral position, that is, when the pedal is in the neutral position, the cloth press is held at the height between the moving position and the crimping position. When the pedal is pressed down to the forward stepping position, the cloth pressing portion is moved to the crimping position and sewing starts. It is.

In addition, as a device for pushing up a one-pedal sewing machine, the device disclosed in Japanese Patent Laid-Open No. 2001-149681 detects the amount of pedaling by a potentiometer and presses and lifts it based on the output voltage from the potentiometer. If the pedal P is in the reference position Dk as shown in FIG. 15 by rotating the motor for a predetermined direction, the cloth press is moved to the movement position, and when the pedal P is pushed forward, the pedal P is operated from the reference position Dk to the step position Df. The cloth pressing moves steplessly from the moving position to the pressing position corresponding to the operation position of the pedal P. When the pedal P is pressed again beyond the step Df, the sewing process is started.

However, as described above, when the device for pushing up has a structure for moving the cloth press to a predetermined height according to the amount of stepping of the pedal by the operator, it takes a long time to move the cloth press or the press of the cloth moved to a predetermined position. To stop at this position has a problem that the workability deteriorates because the operator must keep the pedal on a predetermined amount.

In addition, the two-pedal push-up device requires the operation of the other pedal to start sewing the sewing object after the press by the cloth press is completed, and the movement of the cloth press and the sewing start operation are inconsistent. There is a problem of lack of sex.

In addition, a drive control system for driving the cloth presser up and down is required for two systems in order to cope with two pedals, which causes problems such as an increase in size and complexity of the pushing device.

In addition, the sewing device disclosed in Japanese Patent Application Laid-Open No. 11-66813 or Japanese Patent Application Laid-Open No. 2001-149681 has a structure in which the cloth presses are lowered by stepping on the pedal forward, for example. In the case of a worker using a pressing device having a structure in which the cloth press moves when the user presses the front of the shoe, the pedal operation for driving the cloth press has been reversed so far, resulting in discomfort.

SUMMARY OF THE INVENTION An object of the present invention is to provide a device for pushing up a sewing machine which can quickly perform the positioning operation of cloth pressing and the sewing start operation of the sewing machine in consideration of the above circumstances.

The pressing device 4 of the sewing machine of claim 1 for solving the above problems includes a cloth press for pressing the sewing object from above, sewing means for forming a seam on the sewing object pressed by the cloth pressing, and the cloth pressing A press-lifting motor as a cloth pressing moving means for moving through the link member between the cloth pressing position and the highest raising position, and when not stepped on, the first and second motors disposed in the neutral position and movable from the neutral position to the forward stepping position; A device for pushing up a sewing machine having a pedal and a pedal sensor capable of detecting the positions of the first and second pedals, the sewing machine stops driving the sewing machine when the sewing means completes the formation of the seam for one cycle. When the pedal is in the neutral position, the press-lift motor is controlled to raise the cloth press to an intermediate position between the cloth press position and the highest raising position, When the first pedal is stepped forward, the press-lifting motor is controlled to raise the cloth press from the intermediate position to a position corresponding to the stepped amount of operation of the first pedal, and then the second pedal is stepped forward. And a control means for controlling the cloth pressing lift motor and the sewing machine motor to lower the cloth press to the cloth pressing position and simultaneously start the sewing machine.

According to the pressing device of the sewing machine of claim 1, if the pedal is in the neutral position when the sewing means 1 forms the seam for one cycle, the cloth press is moved to the intermediate position between the cloth pressing position and the highest position. In addition, if the pedal is in the stepped state, the cloth press moves according to the amount of stepping on the pedal. For example, if the user presses the pedal forward, the presser of the structure that moves the cloth press moves the cloth press. The pedal operation to drive the same as the conventional one can be performed without discomfort.

In addition, it is possible to easily adjust the height position of the cloth press only by adjusting the step amount of the pedal according to the thickness of the material to be sewing, thereby improving workability.

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In addition, as a pressing device of the sewing machine, the pedal is divided into a first pedal and a second pedal, the sewing means forms a seam for one cycle, and then the control means is stepped forward when the first pedal is pressed down The cloth press is moved according to the amount of stepping on the front of the pedal, and when the second pedal is pressed down, the cloth press is moved to the position of pressing the cloth and the sewing machine is started at the same time.

When the first pedal is stepped forward, the cloth press is moved according to the amount of stepping forward of the first pedal, and when the second pedal is stepped forward, the cloth press is moved to the cloth press position and the sewing machine is started. Therefore, the workability can be improved by simply starting up the pedal to the stepped position, for example, the sewing start switch can be automatically started without any manipulation.

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(First embodiment)

Next, embodiments of the present invention will be described based on the drawings. This embodiment is an example in which the present invention is applied to a pressing device (hereinafter simply referred to as a "pressing device") of a hole sewing machine that forms a hole cutting seam.

As shown in Fig. 1, the hole cutting sewing machine 1 is placed on and supported on the sewing machine table 10, and the sewing machine motor 74, a hole cutting seam (not shown), or a buttonhole are placed on the sewing machine table 10. An operation panel 6 for inputting various data to be formed is arranged, and a control means 70 for driving control of the cloth press 2 is arranged in a box at the right end of the sewing machine table 10. In addition, the control means 70 includes various driving mechanisms (sewing mechanism 3 (also referred to as "sewing means"), feeder drive mechanism 16, cutter driving mechanism (not shown) constituting the sewing machine 1, and the like. It also has a function as a control means for controlling the driving.

The hole cutting sewing machine 1 has a bed portion 12, a foot portion 13 that stands up from the bed portion 12, and an arm portion 14 in the front direction from the foot portion 13. As shown in FIG. The stapling sewing machine 1 has a sewing mechanism 3 for forming a stapling seam in the sewing object as shown in Fig. 2, and a carriage driving mechanism 16 for transferring the sewing object through the transfer table 15 ( 3), a cutter driving mechanism for forming a button hole by the cutter 17 on the hole-seaming seam formed in the to-be-sealed object, a pressing device 4 for moving the cloth press 2 up and down, and the like. Is placed.

As shown in FIG. 2, the sewing mechanism 3 includes a needle bar 31 disposed on the head 14a of the arm 14 and a sewing needle 32 detachably attached to a lower end of the needle bar 31, and a needle bar ( 31) a needle bar drive mechanism (not shown) for reciprocating up and down and swinging left and right, and a rotating drum disposed on the bed portion 12 to cooperate with the sewing needle 32 to form a hole cutting seam ( Not shown). And the hole-seam seam is formed by the sewing mechanism 3 in the to-be-sealed material conveyed from the feeder 15.

Next, the carriage drive mechanism 16 which drives the carriage 15 and the carriage 15 is demonstrated. As shown in FIGS. 2 and 3, a pair of left and right guide plates 12a are inserted into the upper surface of the bed part 12, and the plate-shaped conveying table 15 which is long and thin back and forth is moved forward and backward by these guide plates 12a. It is clamped to be movable. A long hole 15a for forming a hole seam or a button hole is formed at the front end of the transfer table 15.

The carriage drive mechanism 16 is a movable member 18 fixed to the bottom side of the rear end of the carriage 15 and a movable member 19 fixedly connected to the movable member 18 by a long connecting rod 20 before and after. ) And a transfer motor 21 for driving the movable member 19 back and forth.

The connecting rod 20 extends in the front-rear direction by inserting the left ends of the movable members 18 and 19, respectively, and is movable back and forth to the sewing machine base through a pair of bearings 22 at the front and rear sides of the movable member 18. Supported. The front end of the rod 23 in the front-rear direction is fixed to the right side of the connecting rod 20, and the right end of the movable member 19 is supported so as to be freely moved back and forth through the bearing 19a.

The drive fleece 24 is fixed to the output shaft of the transfer motor 21, and the driven fleece which is not shown in the back of the drive fleece 24 is axially rotatable to a sewing machine base, and an endless belt is attached to these fleece. (25) hangs. The movable member 19 is fixed to a part of this belt 25. Accordingly, when the transfer motor 21 is driven, both of the movable members 18 and 19 and the transfer table 15 are driven in the front-rear direction through the belt 25.

The rear end of the pressing arm 26, to which the cloth press 2 is attached to the front end portion, is rotatably connected around the axial center of the movable member 19 in the left and right directions.

In addition, the groove 26a formed on the upper surface of the front end of the pressing arm 26 is connected to the pressing rod 41 which is driven up and down by the pressing device 4 described later via the electric roller 27.

As a result, the cloth press 2 moves up and down together with the push bar 41 in the vertical direction. Moreover, the movable member 19 is driven by the feed motor 21 in the front-back direction, and moves in the range of the groove 26a.

In addition, the cutter drive mechanism is configured around the cutter drive solenoid (not shown). As shown in FIG. 2, the cutter 17 is attached to the cutter holder 29 at the lower end of the cutter attachment shaft 28 moved by the driving mechanism through a screw 29a.

Next, the press-up device 4 which drives the cloth press 2 up and down according to the operation amount of the pedal 5 is demonstrated.

The pressing device 4 as shown in FIG. 4 is provided with a cloth pressing drive mechanism 40 as a cloth pressing moving means, a press-lifting motor 48, a pedal sensor 50 (see FIG. 7), and the like. The means 70 is an apparatus for vertically driving the cloth press 2 based on the signal output by the operation of the pedal 5.

The cloth pressing drive means 40 is provided with the push rod 41, the L-shaped link piece 42 and 43 which can be rocked about the axis | shaft of the left-right direction, and the link members 44-46. The link members 44 and 46 are pin-coupled through the L-shaped link piece 42, and the link members 46 and 45 are pin-coupled through the L-shaped link piece 43.

A pin 45a protrudes from the link member 45. One end 47a of the cam 47 swinging around the axis in the left and right direction is engaged with the pin 45a. The other end 47b of the cam 47 is coupled to a pin 49 that circularly moves in the vertical plane by the push-up motor 48.

When the push-up and down motor 48 rotates, the rotation is converted into the shank-dong of the link member 45 by the cam 47. The shanghai copper of this link member 45 is transmitted to the push rod 41 via the L-type link piece 43, the link member 46, the L-type link piece 42, and the link member 44 one by one.                     

In this way, the press-up device 4 moves between the cloth pressing position where the sewing object is pressed according to the rotation angle of the elevating motor 48 and the highest lifting position where the cloth pressing 2 is most moved. It is supposed to. In addition, the cloth press position refers to the position where the cloth press 2 compresses the sewing material such as cloth on the bed part 12, and the highest lift position refers to the position where the cloth press 2 is driven upward. Point. In addition, when the pedal 5 is in the neutral position A mentioned later, the cloth press 2 exists in the intermediate position which becomes substantially halfway between the highest raising position and the cloth pressing position.

1 and 5 show a pedal 5 for starting and stopping the buttonhole sewing machine. The pedal 5 is connected to the pedal sensor 50 disposed below the sewing machine body 11 through the link member 51.

The pedal 5 is disposed at the neutral position A shown in FIG. 5 when no stepping operation is performed by an operator, that is, no external force is applied, and the forward stepping (treading) at the neutral position A and It is configured to be stepped on. And the pedal sensor 50 to be described later is the position of the pedal (5), that is, the pedal (5) neutral position (A), the stepped back and down step (B), the front stepped step (C) or neutral position �˜ It is comprised so that detection of what position is possible between (A) and the stepped position B or between a neutral position A and the stepped position C is possible.

The pedal sensor 50 is arranged to detect the position of the pedal 5 as described above, and uses a potentiometer in this embodiment.

The potentiometer is connected to the pedal 5 via the link member 51 as described above. When the pedal 5 is in a stepped position B as shown in Fig. 6, the potentiometer is about " 0 " V from the potentiometer. Is output to the control means 70, and "+ v1" V is output when the pedal 5 is in the stepped position C. However, when the pedal 5 is steplessly operated at any position from the stepped position (B) to the front stepped position (C), the potentiometer may have a voltage of "0" V to "+ v1". When the pedal 5 is in the neutral position A, approximately " + v 1/2 " V is output from the potentiometer.

And the control means 70 controls the driving of the push-up motor 48 on the basis of the voltage output from the potentiometer corresponding to the position of the pedal 5, the position (C) the pedal 5 stepped forward When pressed down, the cloth press 2 is moved to the highest position, and when the pedal 5 is pressed down to the stepped position B, the cloth press 2 is moved to the cloth press position and the sewing machine is started.

Next, the control system of the hole cutting sewing machine 1 will be described. As shown in Fig. 7, the control means 70 is composed of a CPU 71, a ROM 72 connected to the CPU 71, a RAM 73, and the like.

The output voltage A from the pedal sensor 50 and the control signal from the operation panel 6 are input to the CPU 71. From the CPU 71, a drive circuit 74a for the sewing machine motor 74, Drive circuits 75a and 76a for the X-feed motor 75 and Y-feed motor 76 for sending the offering in the XY arbitrary direction, and drive circuit 48a for the press-lift motor 48. The control signal is output to each.

The ROM 72 includes a sewing control program and a cloth press that drive-control the sewing machine motor 74 and the X and Y feed motors 75 and 76 based on the sewing data to form a hole-seaming seam in the object to be sewn. The calculation program for height position calculation 2), the control program for height control of the cloth press 2, and the like are stored in advance.

The RAM 73 includes various memories, counters and buffers necessary for various controls, and various memories that primarily store calculation results calculated by the CPU 71.

Next, the routine of the height control of the cloth press 2 executed by the control means 70 will be described based on the flowchart of FIG. 8.

When power is supplied to the hole cutting sewing machine 1, the control by the control means 70 starts, and first, the output voltage A of the potentiometer is read, and it is judged whether the pedal 5 is stepped forward in step S1. .

And in step S1, No. That is, when the output voltage A is "+ v1 / 2" V or less, the process proceeds to step S3. In step S1, that is, when the output voltage A is equal to or greater than " + v1 / 2 " V, the process proceeds to step S2, where the height of the cloth pressing 2 is adjusted so as to correspond to the stepped amount (output voltage A).

Specifically, when the pedal 5 is located between the neutral position A and the stepped position C, the stepless output voltage A ("+ v1 / 2" to "+ v1" V) from the potentiometer is applied. Based on the calculation program for calculating the output voltage A shown in Fig. 6, the height of the cloth press 2 is obtained. On the basis of this height, the pushing-up motor 48 is driven, and the cloth pressing 2 is adjusted to a height corresponding to the position of the pedal 5.

After the height adjustment is completed, the process proceeds to step S3.                     

In step S3, it is determined whether the pedal 5 is in the step B position, that is, whether the output voltage A of the potentiometer is about " 0 " V, and returns to step S1 when the step is No. Go to S4.

In step S4, the cloth press 2 starts lowering and the cloth press 2 presses the cloth at the same time as the pedal 5 is in the step B position. It is judged whether the position has been lowered to the position, that is, the pressing to the to-be-sealed material by the cloth press 2 is completed. In the case of No in step S4, the flow advances to step S5 to continue the lowering operation of the cloth pressing 2, and in the case of yes, the flow proceeds to step S6.

In step S6, the instruction which starts sewing in the state which the cloth press 2 was fixed to the cloth press position is output, and the sewing machine 1 starts. As a result, a hole cutting seam is formed in the sewing object based on the sewing control program.

In this way, the sewing process is automatically started without any manipulation of the sewing start switch or the like by simply stepping on the pedal B to the step B, for example. After the sewing is started in this manner, the sewing continues regardless of the position of the pedal 5, that is, the value of the output voltage A at the potentiometer. That is, during sewing, the state where the cloth press 2 is fixed to the cloth press position continues even when the foot pedal 5 is not stepped on, for example, even when the pedal 5 is returned to the neutral position A. FIG.

When the formation of the hole cutting seam is completed, the drive of the sewing machine is automatically stopped in step S7. In step S8, the push-up and lift motor 48 is driven to move the cloth press 2 to the intermediate position and to sew. One cycle of is finished.                     

Next, the relationship between the position of the pedal 5 and the position of the cloth press 2 in the positioning operation of the to-be-sealed object is demonstrated using FIG. 9 (A).

At the start of the positioning operation, the pedal 5 is in the neutral position A (section A1), and the cloth press 2 is in the intermediate position corresponding to the position of the pedal 5. In this state, the worker moves the to-be-sealed object to a predetermined position in order to perform positioning.

For example, when the cloth press 2 interferes with the object because the cloth thickness of the object is large, the operator may move the pedal 5 between the neutral position (A) and the position (C) where the user presses the pedal 5. By stepping on the position (section A2), the cloth press 2 moves to the height corresponding to this stepping amount.

Moreover, an operator can move the cloth press 2 to the highest position by stepping on the pedal 5 to the position C which is stepped forward as needed (section A3).

Further, by stepping on the pedal 5 to the step B (step A4), the cloth press 2 is lowered to the cloth pressing position to compress the to-be-sealed material. Further, by pressing the pedal 5 forward from the step B where the pedal 5 is stepped back (section A5), the cloth press 2 is moved again according to the position of the pedal 5.

Next, the relationship between the position of the pedal 5, the position of the cloth press 2, and the sewing machine speed from the start of sewing work to the end (1 cycle) will be described with reference to Fig. 9B.

First, when the operator does not press the pedal 5 forward after the end of one cycle, the cloth press 2 is in the intermediate position (state of ① in the drawing) and the pedal 5 is pressed forward. Is the position corresponding to the amount of stepping on the cloth press (2) in the figure.

Then, when the pedal 5 in the neutral position A is pressed down to the step B1 (section B1) (section B2), the cloth press 2 moves to the cloth press position and simultaneously compresses the object to be pressed. The speed of the sewing machine 1 is increased, that is, the sewing machine 1 is started.

As described above, the cloth pressing 2 continues to be held at the cloth pressing position regardless of the position of the pedal 5 during sewing. In addition, section B3 shows a case in which the operator returns the pedal 5 to the neutral position A. FIG.

Then, when the formation of the hole cutting seam is completed, the speed of the sewing machine 1 is automatically lowered so that the sewing machine 1 stops, and then the cloth press 2 moves to the intermediate position.

As described above, according to the pressing device 4 of the sewing machine shown in the present embodiment, when the pedal 5 is stepped forward, the cloth press 2 is moved. For example, when the pedal is pressed forward, the cloth press moves. In the operator who used the pressing device, since the pedal operation for driving the cloth pressing 2 does not change from the conventional one, the operation can be performed without discomfort.

In addition, the height of the cloth press 2 can be easily adjusted according to the cloth thickness of the to-be-sealed object only by adjusting the stepped amount of the pedal 5, thereby improving workability.

In addition, since the sewing process can be automatically started without any manipulation, for example, the sewing start switch or the like can be started simply by stepping on the pedal B to the step B.

In the middle of sewing, sewing is carried out with the cloth press 2 fixed to the cloth press position regardless of the position of the pedal 5, so that the operator must fix the pedal 5 at the step B where it is to be stepped on. There is no worker's burden can be reduced.

(Second embodiment)

Next, a second embodiment of the present invention will be described with reference to Figs. Also, in the pressing device 4 of the sewing machine of the present embodiment, the difference from the pressing device 4 of the sewing machine shown in the first embodiment described above is mainly the height of the cloth pressing 2 by the control means 70. Since it is related to control, the part which becomes the same structure as the press-up device 4 of the sewing machine shown in 1st Example is attached | subjected with the same code | symbol in drawing, and description thereof is abbreviate | omitted.

In the present embodiment, as shown in Fig. 11, the pedal 5 is present in the neutral position A when no stepping operation is performed by the operator, that is, in the open state, and the pedal 5 is stepped forward in the neutral position A. As shown in FIG. To the forward step position (C), the neutral position (A), the stepped first position (B1) in the stepped back state, and the second step (B2) to step on the first position to step on again. It becomes movable.

Although not shown, the potentiometer in this embodiment outputs a voltage corresponding to the position of the pedal 5 to the control means 70 similarly to the potentiometer in the first embodiment described above. And the control means 70 controls the driving of the push-up motor 48 on the basis of the output voltage corresponding to the position of the pedal (5), and when the pedal (5) is pressed down to the front (C) stepped cloth Move the presser (2) to the highest position, and when the pedal (5) is stepped on to the first position to step on, move the cloth press (2) to the position to press the cloth, and press the pedal (5) to the second position to step on Start the ground sewing machine.

Next, the routine of height control of the cloth pressing 2 by the control device will be described based on the flowchart of FIG.

When power is supplied to the hole cutting sewing machine 1, the control by the control means 70 starts, and first, the output voltage A of the potentiometer is read, and in step S1, the pedal 5 is in a stepped state. It is judged.

And when it is No in step S1, it will transfer to step S3. If YES in step S1, the process proceeds to step S2, and the height is adjusted so that the height of the cloth press 2 corresponds to the stepped amount (output voltage A) as described above, and then the process proceeds to step S3.

In step S3, it is determined whether the pedal 5 is in the first position B1 to be stepped on, and if it is No, the process returns to step S1, and if yes, the process proceeds to step S4.

In step S4, when the cloth press 2 starts descending by driving the press-lift motor 48, the cloth press 2 lowers to the cloth press position, i.e., as the to-be-sealed material by the cloth press 2; It is judged whether the crimping is completed. If No in step S4, the routine advances to step S5 to continue the lowering operation of the cloth pressing 2, and if yes, the process proceeds to step S6.

In step S6, the cloth press 2 is fixed to the cloth press position, and in this state, it is determined whether the pedal 5 is in the second position B2 to be stepped on, and if it is No, the process returns to step S1 and is again sealed. Positioning of the object is performed, and if YES, the flow proceeds to Step S7.                     

In step S7, a command to start sewing is output, and the sewing machine 1 starts. And a hole cutting seam is formed in a to-be-sealed object by execution of a sewing control program.

When the formation of the hole-seaming seam is completed, the driving of the sewing machine 1 is automatically stopped in step S8. In step S9, the press-lifting motor 48 is driven, and the cloth pressing 2 is moved to an intermediate position. It moves and completes one cycle of sewing work.

Next, the relationship between the position of the pedal 5 and the position of the cloth press 2 in the positioning operation of the to-be-sealed object is demonstrated using FIG.

At the start of the positioning operation, the pedal 5 is in the neutral position A (section A1), and the cloth press 2 is in the intermediate position corresponding to the position of the pedal 5. In this state, the worker moves the workpiece to perform positioning.

For example, when the cloth press 2 interferes with the object because the cloth thickness of the object is large, the operator may move the pedal 5 between the neutral position (A) and the position (C) where the user presses the pedal 5. By stepping on the position (section A2), the cloth press 2 moves to the height corresponding to this stepping amount.

In addition, the worker can move the cloth press 2 to the highest position by stepping on the pedal 5 to the position C where it presses forward (section A3) as needed.

Further, by pressing down on the pedal 5 to the first position B1 (section A4), the cloth press 2 descends to the cloth press position and compresses the sewing object. In addition, when repositioning of the to-be-sealed object is to be performed, it is necessary to return from the first position B1 where the pedal 5 is stepped on, and then step the pedal 5 forward at the neutral position A (section A5). The cloth press 2 moves in accordance with the position of the pedal 5.

Next, the relationship between the position of the pedal 5, the position of the cloth press 2, and the sewing machine speed from the start of sewing operation to the end (1 cycle) will be described with reference to Fig. 12B.

First, if the operator does not press the pedal 5 forward after the end of one cycle, the cloth press 2 is in the intermediate position (state of ① in the drawing), and the pedal 5 is pressed forward. In the case, the cloth press 2 is in a position corresponding to the amount of stepping (the state of ② in the figure).

When the pedal 5 (section B1) in the neutral position A is stepped down to the first position to step on (section B2), the cloth press 2 moves to the cloth press position to compress the to-be-sealed material. When the pedal 5 is pressed down to the second position where the pedal 5 is stepped back (section B3), the speed of the sewing machine 1 is increased, and the sewing machine 1 is started. In addition, the section B4 shows a case in which the operator returns the pedal 5 to the neutral position A. FIG.

Then, when the formation of the hole cutting seam is completed, the speed of the sewing machine 1 is automatically lowered so that the sewing machine 1 stops and the cloth press 2 moves to the intermediate position.

According to the cloth pressing device 4 of the sewing machine shown in this embodiment, the sewing machine 1 is started at the time when the pedal 5 is pressed down to the second position B2. That is, when the pedal 5 is moved to the stepped position B as shown in the pressing device 4 shown in the first embodiment, the cloth pressing 2 moves to the cloth pressing position and the sewing machine 1 is automatically In comparison with the case of starting with the engine, the operation of the pedal 5 becomes relatively easy for the operator.                     

(Third Embodiment)

Next, a third embodiment of the present invention will be described with reference to FIG. In addition, in the pressing device 4 of the sewing machine of the present embodiment, the difference from the pressing device 4 of the sewing machine shown in the first embodiment described above is mainly the height of the cloth pressing 2 by the control means 70. Since it is related to control, the part which becomes the same structure as the pressing device 4 of the sewing machine shown in 1st Example is attached | subjected with the same code | symbol in drawing, and description thereof is abbreviate | omitted.

Although the illustration is omitted in the present embodiment, the pedal 5 is in the neutral position A when in the open state, and the front stepped first position stepped forward from the neutral position A and the front stepped step It is possible to move to the second position where the first step is stepped on again.

Although not shown, similarly to the potentiometer of the first embodiment described above, the voltage corresponding to the position of the pedal 5 is also output to the control means 70 in the potentiometer of this embodiment. The control means 70 controls the driving of the pushing motor 48 based on the voltage output corresponding to the position of the pedal 5, and presses the cloth when the pedal 5 is in the neutral position A. FIG. Move (2) to the highest position and press the cloth (2) when the pedal (5) is stepped forward to the first position, and press the cloth when the pedal (5) is stepped forward to the second position. Move (2) to the cloth pressing position and start the sewing machine (1).

Next, the relationship between the position of the pedal 5 and the position of the cloth press 2 in the positioning operation of the to-be-sealed object is demonstrated using FIG. 13 (A).                     

At the start of the positioning operation, the pedal 5 is at the neutral position A (section A1), and the cloth press 2 is at the highest position corresponding to the position of the pedal 5. In this state, the worker moves the workpiece to perform positioning.

Further, the worker can move the cloth press 2 to the intermediate position by stepping on the pedal 5 to the first position where the pedal 5 is stepped forward (section A2).

Then, by stepping on the pedal 5 to the second position to step forward (section A3), the cloth press 2 descends to the cloth press position and compresses the to-be-sealed material. When repositioning the object to be sealed, etc., the pedal 5 is moved to the neutral position A again (section A4) or the first step to step forward (section A5). 2) moves according to the position of the pedal (5).

Next, the relationship between the position of the pedal 5, the position of the cloth press 2, and the sewing machine speed from the start of sewing operation to the end (1 cycle) will be described with reference to Fig. 13B.

First, when the operator does not press the pedal 5 forward after the end of one cycle, the cloth press 2 is in the highest position (state of ① in the drawing), and the pedal 5 is pressed forward. In this case, the cloth press 2 is in the intermediate position (the state of ② in the drawing).

When the pedal 5 (section B1) in the intermediate position A is pressed to the first position to step forward (section B2), the cloth press 2 moves to the intermediate position. When the pedal 5 is pressed down to the second position where the pedal 5 is stepped forward (section B3), the cloth press 2 moves to the cloth press position, positioning is completed, and the speed of the sewing machine 1 is increased to start the sewing machine 1. do.

In addition, the section B4 shows a case in which the operator returns the pedal 5 to the neutral position A. FIG.

Then, when the formation of the hole cutting seam is completed, the speed of the sewing machine 1 is automatically lowered, that is, the sewing machine 1 is stopped and the cloth press 2 moves to the highest position.

According to the press-up device 4 of the sewing machine shown in this embodiment, for example, the position of the cloth press 2 is shifted from the highest position, as in the push-up device 4 shown in the first or second embodiment. It is not steplessly adjustable between the push positions, and the cloth presses (2) are the highest rising position, the middle position and the cloth pressing corresponding to the neutral position (A), the first step of the pedal and the second step of the pedal (5). Go to location. That is, the operator can improve workability since the operator only needs to select one of the three positions of the neutral position, the first step of stepping on the front and the second step of stepping on the height adjustment of the cloth pressing 2.

(Example 4)

Next, a fourth embodiment of the present embodiment will be described with reference to FIG. In addition, in the pressing device 4 of the sewing machine of the present embodiment, the difference from the pressing device 4 of the sewing machine shown in the first embodiment described above is mainly the height of the cloth pressing 2 by the control means 70. Since the present invention relates to the control of the parts having the same configuration as the pressing device 4 of the sewing machine shown in the first embodiment, the same reference numerals are given in the drawings, and their description is omitted.

Although not shown in the present embodiment, the pedal 5 is in the neutral position A when in the open state, and the first stepping position is stepped forward in the neutral position A, and It is possible to move the front stepped second position, which has stepped on the front stepped first position, and the front stepped second position, which has stepped on the front stepped second position again.

Although not shown, the potentiometer in this embodiment, like the potentiometer in the first embodiment described above, also outputs a voltage corresponding to the position of the metal 5 to the control means 70. Then, the control means 70 controls the driving of the push-up motor 48 based on the voltage output corresponding to the position of the pedal 5 so that when the pedal 5 is in the neutral position A, the cloth press ( 2) to the highest position, and when the pedal 5 is stepped on to the first position to step on, the cloth press 2 is moved to the middle position, and when the pedal 5 is stepped to the front to the second position, the cloth is pressed ( Move 2) to the cloth pressing position, and start the sewing machine when the pedal 5 is stepped down to the third position to step forward.

Next, the relationship between the position of the pedal 5 and the position of the cloth press 2 in the positioning operation of the to-be-sealed object is demonstrated using FIG. 14 (A).

At the start of the positioning operation, the pedal 5 is at the neutral position A (section A1), and the cloth press 2 is at the highest position corresponding to the position of the pedal 5. In this state, the worker moves the workpiece to perform positioning.

Further, the operator can move the cloth press 2 to the intermediate position by stepping on the pedal 5 to the first position where the pedal 5 is stepped forward (section A2).

Then, by pressing down on the pedal 5 to the second position (section A3), the cloth press 2 lowers to the cloth press position and compresses the to-be-sealed material. In order to reposition the object, etc., the pedal 5 is moved to the neutral position A again (section A4) or the pedal 5 is moved to the first position where the pedal 5 is stepped forward. (Section A5), the cloth press 2 moves in accordance with the position of the pedal 5.

Next, the relationship between the position of the pedal 5, the position of the cloth press 2, and the sewing machine speed from the start of sewing work to the end (1 cycle) will be described with reference to Fig. 14B.

First, after the end of one cycle, if the operator does not press the pedal 5 forward, the cloth press 2 is in the highest position (1 in the drawing), and the pedal 5 is pressed forward. In this case, the cloth press 2 is at an intermediate position (state of ② in the figure).

When the pedal 5 (section B1) in the intermediate position A is pressed down to the first position to step forward (section B2), the cloth press 2 moves to the intermediate position. When the pedal 5 is pressed down to the second position to step forward (section B3), the cloth pressing 2 moves to the cloth pressing position and the positioning is completed. When the pedal 5 is stepped forward to the third position (section B4), the speed of the sewing machine 1 is increased, and the sewing machine 1 is started.

In addition, the section B5 shows the case where the operator returns the pedal 5 to the neutral position A. FIG.

Then, when the formation of the hole cutting seam is completed, the speed of the sewing machine 1 is automatically lowered, the sewing machine 1 stops, and the cloth press 2 moves to the highest position.

According to the press-up device 4 of the sewing machine shown in this embodiment, for example, the position of the cloth press 2 at the highest position, as in the push-up device 4 shown in the first or second embodiment, is used. It is not steplessly adjustable between the pressing positions, and the cloth press 2 is the highest rising position, the middle position, and the cloth pressing corresponding to the neutral position A of the pedal 5, the first step of stepping forward and the second step of stepping forward. Go to location. In addition, the sewing machine is started corresponding to the third position of the pedal. In other words, the operator selects a desired one from four positions of the intermediate position, the first step of the front step, the second step of the front step, and the third step of the front step of the height adjustment of the cloth press 2 and the starting of the sewing machine 1. All you need to do is improve your workability.

In addition, the sewing machine starts when the pedal 5 is pressed down to the third position. That is, if the pedal 5 is moved to the stepped position B as shown in the press-up device 4 of the sewing machine shown in the first embodiment, the cloth press 2 moves to the cloth press position and the sewing machine automatically Compared to the case of starting, the pedal 5 is relatively easy for the operator to operate.

In addition, this invention is not limited to said each Example, It can change suitably.

For example, the control means 70 moves the cloth press 2 to the intermediate position when the pedal 5 is in the neutral position A and presses the front of the pedal 5 when the pedal 5 is in the forward position. In addition to moving the cloth press 2 in accordance with the amount, the operator may operate a device arranged separately for the movement of the pedal 5 to the cloth press position and the starting of the sewing machine.

In addition, the control means 70 controls the cloth press 2 to move the cloth press 2 to the cloth press position as the pedal 5 is stepped on, or presses the cloth 2 as starting the sewing machine. The movement to any position may be performed by the operator operating a device arranged separately.                     

In addition, although the pressing device 4 of the sewing machine is driven based on the operation of one pedal 5, the present invention is not limited to this. The function may be shared by the first pedal and the second pedal. In this case, for example, the control means 70 moves the cloth press 2 according to the amount of stepping down the first pedal when the first pedal is stepped forward, and the cloth presses 2 when the second pedal is stepped down. The sewing machine 1 may be activated while moving to the pressing position.

Alternatively, when the first pedal is stepped forward, the cloth press (2) is moved according to the amount of stepping on the front of the first pedal, and when the second pedal is stepped forward, the cloth press (2) is moved to the cloth press position and the sewing machine (1) ) May be activated.

Alternatively, when the first pedal is stepped forward, the cloth press (2) is moved according to the amount of stepping on the front of the first pedal, and when the second pedal is stepped down to the first position, the cloth press (2) is moved to the cloth press position. The sewing machine 1 may be started when the second pedal is stepped down to the second position to be stepped forward.

Alternatively, when the first pedal is stepped forward, the cloth press (2) is moved according to the amount of stepping on the front of the first pedal, and when the second pedal is stepped down to the first position, the cloth press (2) is moved to the cloth press position. The sewing machine 1 may be started when the second pedal is stepped down to the second position to be stepped forward.

Also, when the first pedal is stepped forward, the cloth press 2 is moved according to the amount of stepping on the front of the first pedal, and when the second pedal is stepped down to the first position, the cloth press 2 is moved to the intermediate position. When the second pedal is stepped down to the second position to be stepped forward, the cloth pressing 2 may be moved to the cloth pressing position and the sewing machine 1 may be activated.

Alternatively, when the first pedal is stepped forward, the cloth press 2 is moved according to the amount of stepping on the front of the first pedal, and when the second pedal is stepped down to the first position where the second pedal is stepped, the cloth press 2 is moved to an intermediate position. It is also possible to move the cloth press 2 to the cloth press position when the second pedal is stepped on to the forward second position and to start the sewing machine when the second pedal is stepped on to the third position when the second pedal is pressed.

The control means 70 moves the cloth press 2 to the highest position when the pedal 5 is in the neutral position A, and the cloth press 2 when the pedal 5 is in the forward stepped state. The movement of the pedal 5 to the cloth pressing position and the starting of the sewing machine may be performed by an operator operating a device arranged separately by moving it to an intermediate position between the pushed position and the highest lifted position.

The position of the cloth press 2 and the starting operation of the sewing machine, the number of the pedals 5, and the like, which are set corresponding to the stepping position of the pedal 5 and the respective stepping positions, can be changed as appropriate.

As the pedal sensor 50, known position detection sensors other than the potentiometer can be used.

Further, the pressing device 4 of the sewing machine of the present invention is not limited to the buttonhole sewing machine, but the button may be applied to a sewing machine or the like.

According to the pressing device of the sewing machine of claim 1, if the pedal is in the neutral position when the sewing means 1 forms the seam for one cycle, the cloth press is moved to the intermediate position between the cloth pressing position and the highest position. In addition, if the pedal is in the stepped state, the cloth press moves according to the amount of stepping on the pedal. For example, if the user presses the pedal forward, the presser of the structure that moves the cloth press moves the cloth press. The pedal operation to drive the same as the conventional one can be performed without discomfort.

In addition, it is possible to easily adjust the height position of the cloth press only by adjusting the step amount of the pedal according to the thickness of the material to be sewing, thereby improving workability.

According to the press-up device of the sewing machine of claim 2, the sewing means forms a seam for one cycle, and when the pedal is stepped on the back, the cloth press is moved to the cloth pressing position. In the operator who used the lifting device having the structure for moving to the cloth pressing position, the pedal operation for driving the cloth pressing does not change from the conventional one, so that the operation can be performed without discomfort.

According to the pressing device of claim 3, if the pedal is in the neutral position, the cloth press is moved to the intermediate position between the cloth pressing position and the highest rising position, and if the pedal is in the stepped-down state, If the pedal is pressed backward, the cloth press is moved to the cloth pressing position according to the amount. Therefore, if you press the pedal forward, the cloth pressing moves, and if you press the pedal backward, the cloth pressing moves to the cloth pressing position. In an operator or the like that uses a lifting device having a moving structure, the pedal operation for driving the cloth press does not change from the conventional one, and thus operation can be performed without discomfort.

In addition, the height position of the cloth press can be easily adjusted according to the cloth thickness of the to-be-encapsulated object only by adjusting the stepped amount of the pedal, thereby improving workability.

In addition, since the sewing process can be automatically started without stepping on the sewing start switch or the like by simply stepping on the pedal to the stepped position, workability can be improved.

According to the pressing device of the sewing machine according to claim 4, the same effect as in claim 2 or 3 can be obtained, and when the pedal is stepped down to the first position, the fabric press is moved to the cloth pressing position, and the pedal is stepped on. When the foot is pressed down to the second position, the sewing machine is started, so when the pedal is moved to the stepped position, the cloth press moves to the cloth pressing position, and at the same time, compared to the case of using the press raising device of the sewing machine which starts the sewing machine automatically, Since the cloth press can be moved again after the cloth press is moved to the cloth press position, the positioning operation of the workpiece can be performed accurately.

In addition, since two positions of the first step and the second step are set as pedal positions, pedal operation is relatively easy for the operator.

According to the pressing device of the sewing machine of claim 5, the same effect as in claim 3 can be obtained, and if the first pedal is stepped forward, the cloth press is moved according to the amount of stepping forward of the first pedal, and the second pedal is moved backward. When stepped on, the cloth press is moved to the cloth pressing position and the sewing machine is started at the same time, so that the operator can prevent the occurrence of a problem such as starting the sewing machine by mistake during the operation of the first pedal.

According to the press-up device of the sewing machine of claim 6, the same effect as in claim 1 can be obtained, and if the first pedal is stepped forward, the cloth press is moved in accordance with the step amount of the first pedal, and the second pedal is moved forward. When stepped on, the cloth press is moved to the cloth press position and the sewing machine is started. Therefore, the workability can be improved by simply starting up the pedal to the stepped position, for example, the sewing start switch can be automatically started without any manipulation.

According to the press-up device of the sewing machine of claim 7, the same effect as in claim 3 can be obtained, and if the first pedal is stepped forward, the cloth press is moved according to the amount of stepping forward of the first pedal, and the second pedal is moved backward. If the user presses down on the first position, the cloth press is moved to the cloth pressing position. When the second pedal is pressed down to the second position, the sewing machine is started. Can be prevented.

When the pedal is moved to the stepped position, the fabric press is moved to the cloth press position, and at the same time, the operation is relatively easy for the operator as compared to the case of using the press-up device of the sewing machine which automatically starts the sewing machine.

In addition, since two positions of the first pedal and the second pedal are set as positions of the second pedal, operation of the pedal is relatively easy for the operator.

According to the pressing device of the sewing machine of claim 8, the same effect as in claim 1 can be obtained, and if the first pedal is stepped forward, the cloth press is moved according to the step amount of the first pedal, and the second pedal is stepped forward. When pressed down to the first position, the cloth press is moved to the cloth pressing position, and when the second pedal is pressed down to the second position to step on, the sewing machine is started. Therefore, the operator incorrectly starts the sewing machine during the operation of the first pedal. The occurrence of a problem can be prevented.

In addition, when the pedal is moved to the stepped position, the fabric presses move to the cloth press position, and at the same time, the operation of the pedal is relatively easy for the operator compared to the case of using the sewing machine's pressing device which automatically starts the sewing machine.

In addition, since the two positions of the first step of the front step and the second step of the front step of the second pedal are set, the pedal operation is relatively easy for the operator.

According to the press-up device of the sewing machine of claim 9, if the pedal is in the neutral position, the cloth press is moved to the highest position, and if the pedal is in the forward position, the cloth press is moved to the intermediate position between the cloth press position and the highest position. The position of the cloth press is not steplessly adjustable from the highest position to the thousand press position, and the cloth press moves from the highest position to the middle position in response to whether the pedal is in the neutral position or the forward stepped state. In other words, the operator can improve the workability because the operator only needs to select one of the two positions of the neutral position or the stepped position with respect to the adjustment of the height of the cloth press.

According to the press-up device of the sewing machine according to claim 10, the same effect as in claim 9 can be obtained, and when the pedal is pressed to the first position where the pedal is pressed, the cloth press is moved to the middle position, and the pedal is pressed to the second position when the pedal is pressed forward. Since the presser presses the cloth press to the cloth press position and simultaneously starts the sewing machine, the operator wants to adjust the presser press height and the sewing machine to be operated in three positions: the neutral position, the first step of the front step, and the second step of the front step. Just select to improve your workability.

According to the elevating device of claim 11, the same effect as that of claim 9 can be obtained, and when the pedal is pressed to the first position where the pedal is pressed, the cloth press is moved to the middle position, and the pedal is pressed to the second position when the pedal is pressed forward. If you press the cloth press to the cloth press position, and the pedal is pressed to the third position to step on the foot, the sewing machine is started, so the operator can adjust the cloth press height and start the sewing machine in the neutral position, the first step to step on the front step, The workability can be improved by simply selecting the desired one among the four positions of the second position and the third position.

According to the pressing device of the sewing machine according to claim 12, the same effect as in claim 9 can be obtained, and when the first pedal is stepped forward, the cloth press is moved according to the amount of stepping on the front of the first pedal, and the second pedal is When the user presses down on the first step, the cloth press is moved to the intermediate position. When the second pedal is stepped on the front step, the cloth press is moved to the cloth pressing position. Therefore, the operator can prevent the occurrence of a problem such as starting the sewing machine by mistake during the operation of the first pedal.

In addition, since the sewing process can be automatically started without any manipulation by, for example, sewing start switch or the like, by simply stepping on the pedal to the second position, the workability can be improved.                     

In addition, it is possible to improve workability because only one desired is selected from the three positions of the neutral position, the first step of stepping on the front and the second step of stepping on the adjustment of the height of the cloth press and the starting of the sewing machine.

According to the pressing device of the sewing machine according to claim 13, the same effect as in claim 9 can be obtained, and when the first pedal is stepped forward, the cloth press is moved according to the amount of stepping forward of the first pedal, and the second pedal When the foot is pressed down to the first position to move the cloth presses to the intermediate position, and when the second pedal is pressed down to the front stepped second position, the fabric press moves to the cloth pressing position, and the second When the pedal is pressed down to the third step of stepping forward, the sewing machine is started, so that an operator can prevent a problem such as starting the sewing machine by mistake while operating the first pedal.

In addition, when the pedal is moved to the stepped position, the pedal press is moved to the cloth press position, and at the same time, the operation of the pedal is relatively easy for the operator as compared to the case of using the press-up device of the sewing machine which automatically starts the sewing machine.

In addition, it is possible to improve workability by simply selecting the desired one among the four positions of the neutral position, the first step of the front step, the second step of the front step, and the third step of the front step for adjusting the height of the cloth pressing and starting the sewing machine. have.

Claims (13)

The cloth press which pushes the sewing object from above, Sewing means for forming a seam on the sewing object pressed by the cloth press; A press-lifting motor as a cloth pressing moving means for moving the cloth pressing through a link member between a cloth pressing position and a top raising position; First and second pedals disposed in a neutral position when not stepped on, and movable from the neutral position to a forward stepped position; An apparatus for pushing up a sewing machine having a pedal sensor capable of detecting positions of the first and second pedals, When the sewing means completes the formation of the seam for one cycle, the drive of the sewing machine is stopped, If the first pedal is in the neutral position, the press-lift motor is controlled to raise the cloth press to an intermediate position between the cloth press position and the highest raising position, When the first pedal is stepped forward, the press-lift motor is controlled so as to raise the cloth press from the intermediate position to a position corresponding to the stepped amount of operation of the first pedal, Thereafter, when the second pedal is stepped forward, the sewing machine comprises a control means for controlling the cloth pressing motor and the sewing machine motor to lower the cloth press to the cloth pressing position and simultaneously start the sewing machine. Jacking device. delete delete delete delete delete delete delete delete delete delete delete delete

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