JPH1060767A - Sewing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable easy and prompt set-up change in no need of detaching of the dedicated unit, when the supporter is changed according to the product to be sewed of various shapes. SOLUTION: This sewing machine is equipped with 2 or more X-direction driving mechanisms and Y-direction driving mechanisms which can freely move the frame detachably supporting a product to be sewed in the plane coordinates to fit a supporter of various shapes according to the shape of the product to be sewed detachably to the X and Y direction driving mechanisms. In this case, a driving member 16a is set to at least one of the X- and Y-direction driving mechanism and the driving base body 23 is bridged between these driving members and the connector 26 equipped with the part 26a connecting to the supporter is mounted to the driving base body to make the driving base movable in the longitudinal direction of the driving base. Further, the supporter has a connection part 6b which is connectable to the connection part set on the connector 26.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a sewing machine having a drive mechanism for freely moving a sewing object having various forms in the X and Y directions within the plane coordinates on a sewing table. is there.

[0002]

2. Description of the Related Art Sewing items sewn by a sewing machine include:
Sheet-like cloth (hereinafter referred to as “raw cloth”),
For example, various forms such as a bag-like or cylindrical one such as a trainer that is almost completed with only the embroidery process (hereinafter referred to as a "bag"), and a hat that is also substantially completed with only the embroidery process left Are known. In order to perform final finishing sewing such as embroidery on a sewing object having these various forms with a sewing machine, it is necessary to hold the sewing object on a dedicated support frame and set the support frame on a dedicated support body. It is. The support on which the support frame is set can be freely moved in the X and Y directions in plane coordinates by driving the respective X and Y drive mechanisms disposed below the table of the sewing machine. That is, the sewing object such as embroidery is performed on the sewing object by moving the sewing object held in the support frame in the X and Y directions of the plane coordinates and moving the needle bar provided on the sewing machine body up and down. Things.

[0003]

As described above, as the support, dedicated ones are prepared according to the sewing object having various forms. Therefore, when sewing an object to be sewn in a form different from that to be sewn until immediately before, it is necessary to replace the support for the sewing machine according to the form of the sewn object. However, since the forms of the supports are different from each other, the fact is that the method of coupling the supports to the driving bodies for driving in the X direction and the Y direction is also different. For this reason, when replacing the support, it is necessary to perform a pre-operation of attaching and detaching a dedicated unit for connecting the support to the X-direction drive and the Y-direction drive, and there is a disadvantage that the setup change is troublesome.

[0004]

SUMMARY OF THE INVENTION In view of the above-mentioned drawbacks, the present invention has been proposed in order to solve the above-mentioned problems, and it has been proposed to replace various types of supports in accordance with a sewing object having various forms. An object of the present invention is to provide a sewing machine capable of performing setup change quickly and easily without the need for a previous operation that required detachment of a dedicated unit for connecting a support to an X-direction drive and a Y-direction drive. I do.

[0005]

SUMMARY OF THE INVENTION In order to overcome the above-mentioned problems and to attain the intended object, the present invention provides a method for moving a frame for detachably supporting a workpiece in plane coordinates.
A plurality of X-direction drive mechanisms and Y-direction drive mechanisms,
In a sewing machine in which various types of supports prepared according to various forms of a sewing object are exchangeably mounted on the X-direction and Y-direction drive mechanisms, at least the X-direction drive mechanism and the Y-direction drive mechanism A driving member is provided on one side, and a driving base is extended and mounted between the driving members, and a connecting body having a connecting portion to the support is attached to the driving base, whereby a longitudinal direction of the driving base is provided. A connecting portion is formed on the support so as to be movable and connectable to a connecting portion provided in the connecting body.

[0006]

According to the sewing machine of the present invention, at least one drive mechanism can be connected to the drive mechanism only by connecting the connecting portion of the support to the connection portion of the drive mechanism.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, the present invention will be described below with reference to the accompanying drawings, taking an embodiment in which the present invention is applied to a multi-head, multi-needle sewing machine. FIG. 1 shows a multi-head, multi-needle sewing machine according to a preferred embodiment in a planar state, and a frame 2 extending horizontally over substantially the entire length of the horizontal sewing table 1 is arranged above a horizontal sewing table 1. A plurality of (four in this embodiment) sewing heads 3 are provided on the front of the frame 2.
Are arranged at appropriate intervals in the lateral direction. Each of the sewing heads 3 includes a sewing machine arm 4 fixed to the front surface of the frame 2 and a support case 5 slidably supported on the front surface of the sewing machine arm 4 in a lateral direction. A plurality of needle bars (both not shown) each having a sewing needle mounted thereon are vertically movably supported.

Each sewing machine arm 4 has a single sewing machine spindle commonly penetrated and rotatably supported. The sewing machine spindle is provided with a needle bar driving mechanism (not shown) provided inside each sewing machine arm 4. ) Are linked. The needle bar selected by the sliding operation of the support case 5 is reciprocated up and down by rotation of the main shaft of the sewing machine and operation of the needle bar driving mechanism.

On the upper surface of the sewing machine table 1, a raw fabric frame 6, which is a form of a support for supporting a workpiece, is placed. The raw fabric frame 6 is generally configured as a rectangular frame, and can directly hold the raw fabric, which is a sewing object, in a state where the raw fabric is stretched on the frame. Embroidery frame can be selectively attached. As shown in FIG. 4, a holding member 7 also having a rectangular shape is attached to the inner peripheral portion of the web frame 6, and a plurality of clips 8 are fitted to protruding ridges 7a protruding from the surface of the holding member 7. Is being worn. When the raw fabric is directly held on the raw frame 6, the raw fabric is stretched on the upper surface of the holding member 7, and is held and fixed by the ridges 7 a and the clips 8.

As shown in FIGS. 1 and 5, below the sewing machine table 1, two X-direction drive mechanisms 11, 11 and 2 are provided.
The original Y-direction driving mechanisms 10 and 10 are provided, and the upper portions of the respective driving mechanisms are correspondingly covered by a cover 19 fixed to the upper surface of the sewing machine table 1. That is, two Y-direction drive mechanisms 10 are provided so as to extend linearly vertically in FIG. 1 and are provided in parallel so as to be spaced apart by a required distance in the left-right direction. The X-direction drive mechanism 11 is disposed so as to extend linearly in the left-right direction in FIG. Each of the covers 19 is formed with a linear slit 19a in the X direction and the Y direction. As shown in FIG. 3, the Y-direction drive mechanism 10 and the X-direction drive mechanism 11 include timing pulleys 13 and 13 fixed to two rotating shafts 12 and 12 that are disposed with a predetermined interval therebetween. Pulley 13,
13 and a timing belt 14 stretched between them.

FIG. 3 is a sectional view taken along the line III-III of FIG.
Although a vertical section of the X-direction drive mechanism 11 is shown, the Y-direction drive mechanism 10 has basically the same configuration. In the X-direction drive mechanism 11 shown in FIG.
A linear guide 15 extending horizontally along the upper and lower linear running portions is disposed substantially in the middle of the linear guide, and a drive member 16a is disposed on the linear guide 15 so as to be slidable. The driving member 16a is connected to the timing belt 1
The belt 14 is fixed to the upper straight traveling portion, and can travel linearly in the Y direction together with the belt 14. The drive member of the Y-direction drive mechanism 10 is designated by reference numeral 16b. The two X-direction drive mechanisms 11, 11 are commonly connected to a drive motor (not shown) and are driven synchronously.
The two Y-direction drive mechanisms 10, 10 are also separate drive motors.
(Not shown) and are synchronously driven.

The driving member 16b of the X-direction driving mechanism 11
As shown in FIG. 4, two rollers 17, 18 are supported on the upper surface, and both rollers 17, 18 project upward through the slit 19a of the cover 19, and one roller 1
Numeral 8 allows position adjustment in the front-rear direction. A rail member 21 is fixed to the rear frame portion 6a of the raw material frame 6, and a rail 21a is protruded from a lower surface of the rail member 21. After the rail 21a is sandwiched between the two rollers 17 and 18, one of the rollers 18 is moved to the front side to be fixed, whereby the two rollers 1 are moved.
The rails 21a are held at 7 and 18 so that they can run freely. That is, the drive member 16b is connected to the Y-direction drive mechanism 10 so as to be able to run freely.

As shown in FIG. 4, a spacer 22 is fixed on the upper surface of the driving member 16a in the X-direction driving mechanism 11,
A drive base 23 is fixed between the spacers 22 and 22. The drive base 23 is set to have a dimension longer than a corresponding interval between the two X-direction drive mechanisms 11, 11.
4, 25 are formed. On the upper surface of the driving base 23,
The coupling plate (combination body) 26 is placed as follows.
That is, two rollers 27, 28 are supported on both ends in the longitudinal direction of the coupling plate 26, and the left roller 27 is supported by an eccentric pin so that the position thereof can be adjusted with respect to the right roller 28. Therefore, the two rollers 28, 28 are brought into contact with the right rail surface 25, and the two rollers 2
By tightening the lock nut 29 of the roller 27 with the 7, 27 in contact with the left rail surface 24, the coupling plate 26 is movably connected to the drive base 23 in the Y direction. Therefore, the coupling plate 26 is driven to move in the X direction together with the driving base 23, and is also allowed to move in the Y direction. The upper portion of the coupling plate 26 is covered by a cover 30 fixed to the driving base 23.

The coupling plate 26 has a left edge portion functioning as a coupling portion 26a.
The right frame portion of the web frame 6 functions as a connecting portion 6b. The raw frame 6 is connected to the coupling plate 26 by a total of five screws 31. A spacer 32 for adjusting the height with respect to the coupling plate 26 is fixed to the upper surface of the right frame portion 6b of the web frame 6 (see FIG. 3). With the above configuration, the X-direction drive mechanism 1
The driving force of the driving base 23 in the X direction is transmitted to the web frame 6 via the coupling plate 26.

In FIG. 1, a front portion 1a of a sewing machine table 1 is divided so that it can be moved up and down. However, in the original frame specification shown in FIG. 1, it is set at an upper position and is in a flat state. It should be noted that a cylinder type hook support 33 is installed below each sewing head 3 correspondingly.
The upper surface of the machine table 1 matches the upper surface of the sewing machine table 1.

Next, FIG. 5 shows a state in which the setup has been changed to a bag specification, and a bag frame unit 40 functioning as a support is set in place of the raw frame 6 shown in FIG. The bag frame unit 40 includes a base 43 elongated in the X direction, an embroidery frame 41 on which a bag such as a trainer can be set, and a support arm 4 for supporting the embroidery frame 41.
2 basically. The support arms 42 supporting the embroidery frame 41 are attached to the base 43 in accordance with the number of the sewing heads 3 provided. In this embodiment, a total of four pairs are attached. On the lower surface of the base 43, a rail similar to the rail 21a attached to the rear frame portion 6a of the web frame 6 described above is formed, and similarly to the web frame 6, the driving member of the Y-direction drive mechanism 10 is provided. 16b (see FIG. 4).

Further, in FIG. 5, a connecting plate 44 is fixed to the right end of the base 43, and the connecting portion 4 is attached to the right end of the connecting plate 44.
4a are formed. The connecting portion 44a is connected to the connecting portion 26a of the connecting plate 26 by three screws 31. That is, the base 43 is composed of two X
It is driven to move in the X direction by the directional drive mechanisms 10 and 10 and is driven to move in the Y direction by the two Y direction drive mechanisms 11 and 11 via the coupling plate 26 and the connecting plate 44. . As described above, when the setup is changed from the blank frame specification shown in FIG. 1 to the bag specification shown in FIG. 5, the separation / connection to the X-direction drive mechanism 11 can be quickly and easily performed only by the attachment / detachment operation of the screw 31. It can be implemented. When the setup is changed to the bag specification shown in FIG. 5, the divided front part 1a of the sewing machine table 1 is used.
Is used in a state of being lowered to the lower position.

Next, FIG. 6 shows a state where the setup has been changed to a hat frame specification, in which a hat frame unit 50 functioning as a support is set. This bag frame unit 50
Is a ring-shaped support frame 5 that can support a set frame (not shown) in which a hat is set on the lower surface of a base body 51 elongated in the X direction.
2 is rotatably supported. A rotation driving plate 53 is slidably mounted in the X direction on the upper surface of the base 51, and a connecting plate 54 is fixed to the right end of the base 51. The connecting plate is slidably engaged with the base 51 together with the rotary driving plate 53. However, the base 51 is
4 differs from the above-described web frame 6 and bag frame unit 40 in FIG.
Is directly fixed to the driving member 16b of the Y-direction driving mechanism 10 shown in FIG. Therefore, each support frame 52 is controlled to move only in the Y direction together with the base 51 by the Y direction drive mechanism 10.

A connecting portion 54a is provided at the right edge of the connecting plate 54.
The connecting portion 54a is connected to the connecting portion 26a of the connecting plate 26 by three screws 31. A wire (not shown) is wound around each support frame 52, and both ends of the wire are connected to the rotary drive plate 51. Accordingly, when the rotary drive plate 53 is slid in the X direction by the X-direction drive mechanism 11 via the coupling plate 26 and the connection plate 54, the support frame 52 is connected via the wire.
Are driven to rotate. As described above, when the setup is changed from the raw material frame specification shown in FIG. 1 or the bag material specification shown in FIG. 5 to the hat frame specification shown in FIG. The operation can be performed quickly and easily only by the operation of attaching and detaching the screw 31. Even when the setup is changed to the hat frame specification of FIG. 6, the divided front portion 1a of the sewing machine table 1 is used in a state of being lowered to a lower position.

In the above-described embodiment, the Y-direction driving mechanism 1 is used.
The case where two groups of 0 are used has been shown.
In some cases, about 3 to 5 direction driving mechanisms 10 are used.
In addition, although two X-direction drive mechanisms 11 are used in the embodiment, three or more X-direction drive mechanisms may be used as needed.

[0021]

As described above, according to the sewing machine of the present invention, at least one of the driving mechanisms is driven only by connecting the connecting portion of the support of the sewing object to the connecting portion of the driving mechanism. Since the connection to the mechanism can be performed, the work of replacing the support according to the sewing object having various forms can be easily and quickly performed, and therefore, the sewing efficiency by the sewing machine is dramatically improved.

[Brief description of the drawings]

FIG. 1 is a plan view of a sewing machine in a case where a support is a raw material frame specification.

FIG. 2 is an enlarged plan view around an X-direction drive mechanism.

FIG. 3 is an enlarged sectional view taken along the line III-III of FIG. 2;

FIG. 4 is an exploded perspective view illustrating the structure of a raw frame and a coupling state with a driving base.

FIG. 5 is a plan view of the sewing machine when the support is of a bag type.

FIG. 6 is a plan view of the sewing machine in a case where the support is a hat frame specification.

[Explanation of symbols]

 6 Material frame (support) 40 Bag frame unit (support) 50 Hat frame unit (support) 6b Connecting part 44a Connecting part 54a Connecting part 10 Y-direction drive mechanism 11 X-direction drive mechanism 16a, 16b Drive member 23 Drive Base 26 Coupling plate (coupling body) 26a Coupling section 41 Embroidery frame (frame)

Claims (1)

[Claims] 1. A frame (41) for detachably supporting an object to be sewn.
Is equipped with two or more X-direction drive mechanisms (11, 11) and Y-direction drive mechanisms (10, 10) to move freely in the plane coordinates, and various types prepared according to various forms of the workpiece. Of the X- and Y-direction driving mechanisms (11, 1).
0), the X-direction drive mechanism (11, 11) and the Y-direction drive mechanism (10, 1).
0) and at least one of the driving members (16a) is provided,
A coupling body having a coupling portion (26a) with respect to the support (40, 50), with a driving base (23) being mounted across the driving member (16a).
(26) is attached to the drive base (23) to enable the drive base (23) to move in the longitudinal direction.The support (40, 50) includes the coupling body (26). A sewing machine characterized in that connecting portions (6b, 44a, 54a) that can be connected to the connecting portion (26a) provided are formed.