JP2003326066A - Mounting bed for control part and drive part of sewing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mounting bed for the control part and the drive part with an excellent versatility, mountability and maintainability which enables the loading or unloading of the control part or the replacement thereof being isolated and the positional adjustment thereof without affecting each other by fixing the control part adjoining a servomotor while being made independent thereof. <P>SOLUTION: The bed 30 is provided with a control part mounting part 30a for fixing the control part 3 and a drive part mounting part 30b extended in the direction of a flywheel of the sewing machine from the control part mounting part 30a so that the control part can be fixed on the bed 30 adjoining the servo motor 2 while being made independent thereof. Thus, the positional adjustment of the motor is made independent of the control part 3 and can be done with the servo motor 2 alone. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a base for mounting a control unit and a drive unit of a sewing machine, and a control unit and a drive unit of the sewing machine can be independently mounted on a lower surface of a sewing machine table with excellent maintainability. The mounting base of the control unit and the drive unit of.

[0002]

2. Description of the Related Art As a device for rotating and controlling a main shaft of a sewing machine, there is a motor as a drive unit and a control unit for controlling the rotation of the motor. The V-belt is wound between the flywheel fixed to the main shaft of the sewing machine and the motor pulley,
The driving force of the motor is transmitted to the main shaft of the sewing machine.

As shown in FIGS. 6 and 7, conventionally, a support arm 4a and a protrusion 4b are formed on a motor housing 4 of a servomotor 2 which is a drive unit so as to project therefrom. The support arm 4a is fitted to a support shaft (not shown) and is swingably supported by the motor base 5.

An end 6a of a substantially L-shaped adjusting bolt 6 is rotatably fitted to the motor base 5. The other end 6b of the adjusting bolt 6 is fixed to the protrusion 4b by a nut 8 and supports the servomotor 2. Motor base 5
Is fixed to the lower surface of the sewing machine table by inserting bolts into three U-shaped grooves 5a provided in the motor base 5.

As shown in FIG. 7, the control unit 3 has an electronic control board and the like built in the control box 10, and the operation switch 11 and the connector 12 are arranged so as to be exposed on the surface. A control link 13 is rotatably arranged on a side surface of the control box 10 by a support shaft 14. A tip 13a of the control link 13 is connected via a pitman rod 28 to an operation pedal 25 that is swingably arranged on a lower frame 26 of the sewing machine table.

The control box 10 is fixed to the lower portion of the servo motor 2 by a mounting plate 15 fixed to the upper surface thereof, and is vertically integrated with the servo motor 2. And
The servo motor 2 is fixed to the lower surface of the sewing machine table by matching the axial position of the pulley with the axial position of a flywheel (not shown) of the sewing machine, and the driving force of the servo motor 2 is applied to the sewing machine via the V belt 24. It is designed to be transmitted to.

As shown in FIGS. 8 and 9, in another conventional servo motor 2 and control unit 3, the control unit 3 and the servo motor 2 are formed in parallel and integrally. The control box 21 of the control unit 3 is composed of a control board housing 21a, a motor housing 21b, and a motor base 21c, which are integrally formed. Control box 2
In No. 1, bolts are inserted into three U-shaped grooves 21d formed in the motor base portion 21c, and are fixed to the lower surface of the sewing machine table.

The control board housing portion 21a contains an electronic control board and the like, and the operation switch 11 and the connector 12 are arranged so as to be exposed on the surface. A control link 13 is rotatably supported by a support shaft 14 on a side surface of the control board housing portion 21a. The tip 13a of the control link 13 is connected via a pitman rod 28 to an operation pedal 25 swingably arranged on a lower frame 26 of the sewing machine table.

The servo motor 2 is housed in the motor housing 21b, and the servo motor 2 is fixed to the motor housing 21b by the support shaft 22 and the adjusting bolt 6.
Other parts are the same as those described with reference to FIGS. 6 and 7, and therefore, the same parts are denoted by the same reference numerals in the drawings and the description thereof is omitted.

The servo motor 2 needs to be arranged so that the axial position of the pulley 23 of the servo motor 2 and the axial position of the flywheel of the sewing machine match. The position adjustment of the servo motor 2 in the left-right direction is performed by moving the motor base 5 or the control box 21 in the left-right direction with respect to the sewing machine table. The tension of the V-belt 24 is adjusted by loosening the nut 8 screwed on the adjusting bolt 6 and swinging the servo motor 2 about the support shaft 22 to move the servo motor 2 up and down.

Although not shown, a dedicated controller without a motor mounting portion is prepared for controlling the sewing machine having a built-in motor. Also in this case, the control link of the control unit fixed to the lower surface of the sewing machine table is connected to the operation pedal via the pitman rod.

[0012]

Conventionally, the servo motor 2
Alternatively, in the control unit 3, since the servo motor 2 and the control unit 3 are integrated, at least one of them cannot be attached / detached individually, and even if one is replaced, the whole must be removed. In some cases, it was difficult to maintain. In addition, there are several types of servo motors 2.
Also, when a machine that meets the sewing machine specifications is selected from the control units 3 and is arbitrarily combined and assembled, the same problem occurs and there is a problem that the versatility is low.

Further, in the example shown in FIGS. 6 and 7, V
When the tension of the belt 24 is adjusted, if the servo motor 2 is moved in the vertical direction, the control unit 3 is also moved. Therefore, after determining the position of the operation pedal 25, the V-belt 24
When the tension adjustment work is performed, it is necessary to readjust the connection of the operation pedal 25 by the pitman rod 28, which causes a problem that assembly and maintenance are complicated.

In order to easily adjust the tension of the V-belt 24, if the swing range of the servo motor 2 around the support shaft 22 is increased, in the example shown in FIG. 6 and FIG. In the example shown in FIGS. 8 and 9, the space of the motor storage portion 21b cannot be sufficiently wide, and in any case, the swing range cannot be set large and the tension adjustment There was a problem that the work was difficult to do. Also, since the swing range of the servo motor 2 is narrow, V
As the belt 24, it is necessary to select the V belt 24 having the optimum length. Therefore, there is a problem that the adjustment work becomes complicated.

In the case of a sewing machine with a built-in motor, it is necessary to prepare a dedicated control box that is not compatible with other types of sewing machines, and there is room for improvement from an economical point of view.

The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to make it possible to mount a control section and a drive section of a sewing machine which are improved in versatility, mountability and maintainability. is there.

[0017]

In order to achieve the above-mentioned object, the present invention has, as described in claim 1, a main body attached to a table on which a sewing machine is mounted. A table fixing part that fixes the main body to the table, a control part mounting part that suspends and fixes the control part of the sewing machine, and a control part mounting part that extends from the control part mounting part in the flywheel direction of the sewing machine and is adjacent to the control part. And a drive unit mounting unit for suspending and fixing the drive unit for driving the sewing machine.

Here, as the drive unit, for example, a servo motor or the like can be exemplified. In the mounting base of the control unit and the drive unit of the sewing machine configured as described above, the control unit and the servo motor can be independently fixed to the control unit mounting unit and the drive unit mounting unit, respectively.

Therefore, by mounting the control unit and the servomotor on the sewing machine table through the mounting base of the control unit and the drive unit of the sewing machine, the control unit and the servomotor cannot be detached or replaced individually. The conventional problem can be solved. Further, it is possible to solve the conventional problem that the versatility is poor when the servo motor and the control unit are assembled in an arbitrary combination according to the sewing machine specifications. Further, when the V-belt tension adjustment work is performed after the control unit and the operation pedal are connected by the pitman rod, it is necessary to readjust the connection between the control unit and the operation pedal, and the problem that the work becomes complicated is solved. You can do it.

Further, by mounting the control unit and the servomotor on the sewing machine table via the sewing machine mounting base thus constructed, the control unit and the servomotor are adjacent to each other and fixed to the base at the same height. You will be able to do it. Therefore, in the mounting base of the control unit and the drive unit of the sewing machine, the interference between the conventional control unit and, for example, the knee of the worker is eliminated, and the swing range of the servo motor can be set large. Further, it is possible to solve the conventional problem that it is necessary to select a V-belt or the like having an optimum length that does not cause interference.

Further, by simply removing the servo motor from the base, it is possible to deal with a sewing machine having a built-in motor, for example. Therefore, the problem that the base and the control box cannot be shared by the conventional sewing machine type can be solved.

According to a second aspect of the present invention, there is provided a mounting base for a control section and a drive section of the sewing machine according to the first aspect, wherein the control section and the drive section are mounted on the base. It is characterized in that at least one of them can move in a direction of approaching and separating from the other.

By attaching the control unit and the servomotor to the sewing machine table via the mounting base of the control unit and the drive unit of the sewing machine configured as described above, the control unit and the servomotor, for example, the servomotor and the flywheel, for example, By aligning the positions and attaching to a table or the like, the attaching work and the adjusting work can be completed at the same time.

Also, when either the control unit or the servomotor is replaced after installation, it is sufficient to install and replace only the replacement one.
The adjustment work can be easily performed.

Therefore, for example, even if the servo motor is moved and the position is adjusted according to the flywheel of the sewing machine, the position of the control unit does not change, and the control unit is connected to the operation pedal by the conventional pitman rod or the like. It is possible to improve the assembling property and the maintainability without having to readjust.

Further, as described in claim 3, the present invention is the mounting base of the control part and the drive part of the sewing machine described in claim 2, wherein the control part is movable. There is.

By attaching the control unit and the servomotor to the sewing machine table via the mounting base of the control unit and the drive unit of the sewing machine configured as described above, the servomotor is attached in accordance with the position of the flywheel, for example. Thus, it becomes possible to complete the servo motor mounting work and the adjusting work at the same time. Then, the mounting work of the control unit can be easily performed only by moving the position of the control unit according to the operation pedal and mounting it.

Further, according to a fourth aspect of the present invention, there is provided a mounting base for the control section and the drive section of the sewing machine according to the first aspect, wherein the base does not have the control section mounting section. It is characterized in that it is integrally formed with the control section.

In the mounting base of the control unit and the drive unit of the sewing machine configured as described above, the control unit is mounted at the same time by mounting the base on the sewing machine table. Therefore, the work of attaching the control unit to the base is unnecessary, and the attachment work can be performed more easily.

[0030]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below in detail with reference to the drawings. In the embodiments described below, the members already described with reference to FIGS. 6 to 9 are given the same or corresponding reference numerals in the drawings to simplify or omit the description. Figure 1
FIG. 3 is a perspective view showing a state in which a control unit and a drive unit are attached to the base of the first embodiment of the present invention.

As shown in FIG. 1, a base 30 according to the first embodiment of the present invention includes a controller mounting portion 30a and a motor mounting portion 30b extending from the controller mounting portion 30a in the direction of the flywheel of the sewing machine. And a table fixing portion 30g for mounting the base 30 on a table, the control portion mounting portion 30a is provided with the control portion 3 and the motor mounting portion 30b is provided with the servo motor 2 serving as a driving portion in parallel. It is fixed.

That is, the base 30 has, for example, a thickness of 3.2.
It is a plate-shaped member in which both ends of a metal plate of about mm are formed in a crank shape and a table fixing portion 30g for fixing the base 30 to a sewing machine table (table) is formed, and a central portion is a flat portion 30c protruding downward. Has been formed. Figure 1
In, the elongated hole 30e is formed in the controller mounting portion 30a provided in the substantially left half of the plane portion 30c. The control unit 3 is configured such that the bolt 31 is inserted into the elongated hole 30e from above the base 30 and is screwed into the female screw 32a provided on the upper surface of the control box 32 to be fixed to the control unit mounting unit 30a.

On the side surface of the control box 32, a control link 13 is swingably arranged by a support shaft (not shown). The tip 13a of the control link 13 has an operation pedal 25 that is swingably disposed on a lower frame 26 of the sewing machine table, as in the case shown in FIG. 9 of the embodiment.
Are connected via a pitman rod 28.

In FIG. 1, the motor mounting portion 30b formed on the substantially right half of the flat portion 30c has a female screw 30f of three screws.
It is formed in several places. The servo motor 2 is configured such that the bolts 33 are inserted into the three elongated holes 5a provided in the motor base 5 from below and are screwed into the female screw 30f to be fixed to the base 30. U-shaped grooves 30h are formed in the table fixing portions 30g formed at both ends of the base 30. Further, the reinforcing ribs 30 are provided in the longitudinal direction on the flat surface portion 30c.
j is formed to enhance the bending strength of the flat surface portion 30c.

To mount the servo motor 2 and the control unit 3 on the sewing machine table, for example, first, the control unit 3 and the servo motor 2 are mounted on the base 30 with bolts 31 and 33.
After mounting on the table, the U-shaped groove 30 of the table fixing portion 30g
It is performed by fixing the base 30 together with the servo motor 2 and the control unit 3 to the sewing machine table by inserting bolts 34 into h and through holes (not shown) formed in the sewing machine table.

According to the base 30 described above, since the servomotor 2 is fixed to the motor mounting portion 30b by the bolt 33 inserted through the elongated hole 5a, the bolt 33 is loosened to move the servomotor 2 independently in the left-right direction. Can be moved to. With this, without moving the control unit 3,
By moving only the servo motor 2, the axial positions of the pulley 23 and the flywheel of the sewing machine can be matched.

Therefore, even if the position of the servo motor 2 is adjusted, it is not necessary to readjust the connection between the control portion 3 and the operation pedal 25 by the pitman rod 28, and the assembling property and the maintainability can be improved. . In addition, the control unit 3 uses the bolt 3 that is inserted into the elongated hole 30e of the base 30.
Since it is fixed by 1, the bolt 31 can be loosened and the control unit 3 can be independently moved along the base 30. Therefore, even if the position of the control unit 3 is adjusted according to the operation pedal 25, the position of the servo motor 2 does not change, and it is not necessary to readjust the position of the servo motor 2. further,
The servo motor 2 or the control unit 3 can be independently removed and can be easily replaced.

In the above description, as shown in FIG.
To mount the control unit 3, attach the bolt 31 from above to the base 30.
Although it was inserted into the slot 30e of the control unit 3 and screwed to the female screw 32a of the control unit 3 to be fixed, as shown in FIG. 5, the control unit 3 is formed with the slot 32b and the base 30 is internally threaded. Even if 30k is provided and the bolt 31 is inserted from below and inserted into the slot 32b to be fixed, the same effect can be obtained. Similarly for the installation of the servo motor 2,
The base 30 may be provided with an elongated hole, and the motor base 5 of the servomotor 2 may be formed with an internal thread.

Further, since the control unit 3 and the servo motor 2 are adjacent to each other and have the same height, the interference between the control unit 3 and the operator's knee is eliminated, and the swing range of the servo motor 2 is increased. Can be set. As a result, the complicated work of selecting the V-belt 24 having the optimum length without interference is not required, and the workability can be improved.

In the case of a sewing machine with a built-in motor, the base 3
Since it can be dealt with by simply removing the servomotor 2 from 0, there is no need for a dedicated control box, which is economically advantageous.

FIG. 2 shows a base according to a second embodiment of the present invention, and is a schematic view of a base in which the control unit mounting portion is not provided and the base and the control box are integrally molded. The integrated base 40 according to the second embodiment of the present invention is one in which the base 30 and the control box 32 in the first embodiment are integrally molded. Specifically, the base can be integrated with the control box by welding or the like, or the base and the control box can be integrally die-cast with aluminum or the like to be manufactured.

An elongated hole 40b is provided in a drive portion mounting portion 40a formed by projecting to the flywheel side of the integrated base 40, and the servomotor 2 can be fixed by a bolt 33. .

According to the integral base 40 of the second embodiment described above, the controller 3 can be attached at the same time by attaching the integral base 40 to the sewing machine table, and the work of attaching the controller to the base. Is unnecessary, and the mounting work can be performed easily in a shorter time.

FIG. 3 is a schematic view showing the base of the third embodiment of the present invention and showing a state in which the servo motor 2 and the control unit 3 are attached to the base divided into two parts. The base 50 according to the third embodiment of the present invention is the first base 51.
And the second base 52 are divided into two parts.
The control unit 3 is arranged so as to connect the first base 51 and the second base 52 that are spaced apart from each other, and the bolts 3 are inserted into the long holes 51a of the first base 51 and the long holes 52a of the second base 52.
1 is inserted and fixed to the base 50. Therefore, the first base 51 and the second base 52 operate substantially as a unit.

According to the base 50 of the third embodiment described above, the base 50 can be manufactured from a smaller number of materials. Therefore, the base 50 can be provided at low cost.

The base of the present invention is not limited to the above-described first to third embodiments, and appropriate modifications and improvements can be made. For example, in the above-described embodiment, the base formed integrally with the control box or the base divided into two parts on the control unit side has been described, but the base may be integrally formed with the motor base of the servo motor. Alternatively, the servo motor may be divided into two parts.

In addition, the materials, shapes, dimensions, forms, numbers, positions, etc. of the tables, control units, drive units, bases, control unit mounting units, drive unit mounting units, control boxes, etc. exemplified in the above-mentioned embodiments are as follows. However, the present invention is not limited as long as it can achieve the present invention. In the above description of the embodiment, the control box and the servo motor mounting portion are formed so as to correspond to the control portion mounting portion and the drive portion mounting portion of the base 30, respectively. Control unit (for example, control box 21 in FIG. 8), or
Even if a base (for example, the base 30) is formed so as to correspond to the conventional drive unit (for example, the servo motor 2 in FIG. 6), the conventional control unit and drive unit can be directly attached to the sewing machine table through the base 30. Of course good things.

[0048]

As described above, according to the present invention, as described in claim 1, the control section and the servomotor are independently fixed to the control section mounting section and the drive section mounting section, respectively. ing. Therefore, the control unit and the servomotor can be detached or replaced individually. Also,
A servo motor and a control unit can be combined appropriately and assembled according to the sewing machine specifications, and a base with excellent versatility can be provided. Furthermore, even if the tension adjustment work of the V-belt is performed after the control unit and the operation pedal are connected by the pitman rod, it is not necessary to readjust the connection between the control unit and the operation pedal, and the work is simplified.

Since the control unit and the servo motor can be adjacent to each other and fixed to the base at the same height,
The interference between the control unit and the knees of the operator can be eliminated, and thus the swing range of the servo motor can be set large. In addition, this eliminates the need to select the V-belt having the optimum length that does not cause interference, which facilitates the work.

In the case of a sewing machine with a built-in motor, it is possible to deal with it by simply removing the servo motor from the base. Therefore, it is not necessary to prepare a dedicated control box,
The same base can be shared for all types of sewing machines, which is advantageous in terms of cost.

According to the present invention, as described in claim 2, when the control unit and the servomotor are mounted on the table, one of them is mounted according to the operation pedal or the flywheel, so that the mounting work can be performed. And adjustment work can be completed at the same time. Therefore, after the mounting, only by adjusting the position of either the control unit or the servo motor, the mounting and adjusting work is completed, and the mounting work is simplified.

Further, the servo motor can be independently moved in the left-right direction regardless of the control section. Therefore, even if the servo motor is moved according to the flywheel of the sewing machine, the position of the control unit does not change, and there is no need to readjust the connection between the control unit and the operation pedal by the pitman rod as in the conventional case. Performance and maintainability can be significantly improved.

Further, according to the present invention, as described in claim 3, when the control unit and the servo motor are mounted on the table, the servo motor is mounted in alignment with the position of the flywheel to thereby mount the servo motor. The adjustment and the adjustment can be completed at the same time. Therefore, after that, the mounting work can be performed only by adjusting the connection between the control unit and the operation pedal, and the workability can be greatly improved.

Further, according to the present invention, as described in claim 4, by mounting the base on the sewing machine table, the control unit can be mounted and the position can be adjusted at the same time, and the control unit is mounted on the base. No work is required, and the mounting work can be performed in a shorter time.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a control unit and a servomotor attached to a base of a first embodiment according to the present invention.

FIG. 2 is a schematic view showing a state in which a servomotor is attached to the integrated base of the second embodiment according to the present invention.

FIG. 3 is a schematic view showing a state in which a servo motor and a control unit are attached to a base divided into two parts according to a third embodiment of the present invention.

FIG. 4 is a vertical cross-sectional view showing a state in which a bolt is inserted into an elongated hole provided in a base and a control unit is fixed.

FIG. 5 is a vertical cross-sectional view showing a control unit fixed to a base by inserting a bolt into an elongated hole provided in a control box.

6 and 7 relate to a vertically integrated type conventional example, and FIG. 6 is a perspective view showing a state in which a servo motor and a control unit are assembled.

FIG. 7 is a perspective view of a vertically integrated control unit.

8 and 9 relate to another conventional example, and FIG. 8 is an exploded perspective view of a servo motor incorporated in a base of a parallel integrated type.

FIG. 9 is a perspective view showing a state in which a control link and an operation pedal are connected via a pitman rod.

[Explanation of symbols]

2 Servo motor (drive unit) 3 control unit 23 pulley 30, 40, 50 base 30a Control part mounting part 30b Drive part mounting part 32 control box

Claims (4)

[Claims] 1. A main body attached to a table on which a sewing machine is mounted, the main body having a table fixing section for fixing the main body to the table, and a control section for suspending and fixing a control section of the sewing machine. A mounting portion and a drive portion mounting portion that extends from the control portion mounting portion in the flywheel direction of the sewing machine and that droops and fixes a drive portion that is adjacent to the control portion and that drives the sewing machine. The mounting base for the control section and drive section of the sewing machine. 2. The control unit and the drive unit are movable along the main body in a direction in which at least one approaches and separates from the other.
Mounting base for the control section and drive section of the sewing machine described in. 3. The mounting base for the sewing machine control unit and drive unit according to claim 2, wherein the control unit is movable. 4. The mounting base for the control section and the drive section of the sewing machine according to claim 1, wherein the main body is formed integrally with the control section without providing the control section mounting section. .