JP3008706B2 - Curved upholstered frame drive of sewing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a curved cloth frame driving apparatus for driving a curved cloth frame of a sewing machine used for sewing such as embroidery on a curved cloth such as a sleeve of a hat or a shirt. It is.

[0002]

2. Description of the Related Art Conventionally, as shown in FIG. 13, there is provided a movable frame 200 movable in the X-axis direction and a Y-axis movable frame movable in the Y-axis direction, as shown in FIG. 201
A turning frame 202 for attaching a turning frame, which is rotatable about the center of curvature of the turning frame, and a turning frame 2;
02, a driving guide 204 for guiding the frame holder 203 in the Y-axis direction,
A connecting member 205 connected and fixed to the frame holder 203 for connecting the frame holder 203 to the Y-axis moving frame 201, and a connecting bracket 206 for connecting the connecting member 205 and the Y-axis moving frame 201 are provided. The linear motion of the movable frame 200 in the X-axis direction is converted by the conversion lever 207 into a turning motion of the curved upholstered frame around the center of curvature of the curved upholstered frame, and the Y-axis moving frame is moved. By the movement of 201 in the Y-axis direction,
The embroidery is performed on the cloth stretched on the curved cloth-clad frame.

[0003] In the curved sewing machine driving apparatus for a sewing machine having the above-described configuration, in order to embroider a curved fabric, the height of the curved sewing machine 208 from the bed portion 209 and the inclination of the curved sewing frame are determined. is important. Therefore, after disposing the curved upholstered frame on the bed 209 of the sewing machine 208, the bed 20
The height from 9 and the inclination of the bent frame were adjusted. Adjustment of the inclination of the curved upholstered frame is performed by loosening the connection screw 210 between the Y-axis moving frame 201 and the connection bracket 206 and connecting the connection member 205 and the connection bracket 206 with the connection screw 211.
Is loosened, and the curved upholstered frame is slightly moved in the front-rear and up-down directions. In addition, the vertical adjustment of the curved upholstered frame is performed by loosening the connecting screw 211 between the connecting member 205 and the connecting bracket 206.

[0004]

However, in the above-described conventional sewing machine, the adjustment in the front-rear direction and the adjustment in the vertical direction of the curved upholstered frame are separately performed, so that the adjustment operation is complicated. When it is necessary to adjust the inclination of the upholstered frame, the front-back direction adjustment and the up-down direction adjustment of the curved upholstered frame must be performed many times, and a complicated adjustment operation is required to obtain the desired inclination. There is a problem that must be repeated. SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and an object of the present invention is to provide a curved-covered frame drive of a sewing machine that can easily perform a mounting operation of a curved-covered frame and a tilt and vertical position adjustment operation. It is to provide a device.

[0005]

According to a first aspect of the present invention, there is provided a curved stretcher driving apparatus for a sewing machine, comprising: a movable frame movable in an X-axis direction; and a movable frame movable in a Y-axis direction. A Y-axis moving frame, wherein the linear motion of the movable frame in the X-axis direction is converted into a turning motion of the curved upholstery frame about the center of curvature of the curved upholstered frame, and the Y-axis movement is performed. By moving the frame in the Y-axis direction, the sewing machine is configured to sew on a cloth stretched in a curved surface on the curved cloth-clad frame, and is rotatable around the center of curvature of the curved cloth-clad frame as a rotation center. A rotating frame for attaching a curved cloth tensioning frame, a frame holder for rotatably holding the rotating frame, a driving guide for guiding the frame holding body in the Y-axis direction, and a driving guide for the frame holding body And a connecting portion for connecting the body in a tiltable and vertical position with respect to the body so as to be adjustable.

According to a second aspect of the present invention, there is provided the bending cloth frame driving device for a sewing machine according to the first aspect, wherein the connecting portion includes a fastening screw for connecting the frame holding member to a driving guide, and the frame holding member. And an adjusting hole provided on at least one of the body and the drive guide body and having a larger diameter than the fastening screw for fitting the fastening screw.

[0007]

According to the above-mentioned structure, when the movable frame moves in the X-axis direction, the rotating frame rotates about the center of curvature of the curved fabric stretching frame. The motion is converted into a dynamic motion, and the bent upholstered frame attached to the rotating frame rotates. When the Y-axis moving frame is moved in the Y-axis direction, the frame holder and the rotating frame held by the frame holder also move in the Y-axis direction because the frame holder is attached to the Y-axis moving frame. The upholstery frame moves in the Y-axis direction.

Since the vertical position and the inclination of the curved upholstered frame with respect to the bed portion of the sewing machine are important, the vertical and inclination positions are simultaneously adjusted at the connecting portion between the drive guide and the frame holder. At this time, the diameter of the adjusting hole of the connecting portion is formed to be larger than the diameter of the fastening screw.
Fine movement is possible in the axial direction. Therefore, the adjustment of the vertical direction and the inclination of the curved upholstered frame can be performed at once.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. This embodiment is a case where the curved-clad frame driving device of the present invention is applied to a multi-head embroidery machine, FIG. 1 is a perspective view of the multi-head embroidery machine, and FIG.
FIG. 4 is a schematic plan view showing a state where an arm portion of the sewing machine and a protection cover of the moving mechanism are removed. As shown in FIG. 1, a multi-head embroidery machine 1 according to this embodiment has a horizontally long base frame 2.
At the rear of the upper surface of the sewing machine 3, three sewing machines 3 are arranged side by side, and a multi-needle case 6 having a large number of needle bars 5 is attached to the tip of an arm portion 4 of the sewing machine 3. At the front of the upper surface of the base frame 2, there is arranged a table 7 which can be switched between an upper position and a lower position according to the shape of the fabric to be embroidered.
A bed 10 is formed below the arm 4 so as to extend from the main body of the sewing machine.

Then, above the table 7, FIG.
As shown in FIG. 1, a movable frame 11 for mounting the curved cloth-clad frame 8 and the flat embroidery frame 9 and a Y-axis moving frame 12 arranged to overlap the X-axis frame portion 11a of the movable frame 11 An X-axis moving mechanism 13 for moving the movable frame 11 in an X-axis direction orthogonal to the bed 10 of the sewing machine 3;
A Y-axis moving mechanism 14 that moves the axis moving frame 12 in the Y-axis direction that is the length direction of the bed 10 is provided.

Each sewing machine 3 has a base frame 2
Power is transmitted from one sewing machine motor (not shown) installed in the drive belt 16 via a drive belt 16. Although not shown, a multi-needle case moving mechanism for horizontally moving a desired needle bar 5 of the multi-needle case 6 to a position immediately above a needle drop hole of the bed 10 of the sewing machine 3 is provided. The multi-needle case moving mechanism, the X-axis moving mechanism 13, the Y-axis moving mechanism 14, etc.
As shown in (1), it is controlled by numerical control from an operation panel 18 provided at the end of the base frame 2. Also,
On the upper surface of the arm portion 4 of the sewing machine 3, twelve conical spools 19 are arranged corresponding to the twelve needle bars 5.

As shown in FIG. 2, the movable frame 11 has a rectangular movable frame main body 22 on which a bent cloth frame 8 and an embroidery frame 9 are mounted.
And rectangular extension frames 23 and 24 fixed to both ends of the movable frame main body 22 in the X-axis direction.
24 X-axis frame parts 23a, 24a and Y-axis frame parts 23b, 2
4b are formed with roller guide grooves 25 and 26, respectively. As shown in FIG. 9, guide rollers 11 b and 11 c that engage with guide grooves 12 a formed inside the Y-axis moving frame 12 are attached to the movable frame 11.

As shown in FIG. 2, the X-axis moving mechanism 13 includes an X-axis motor 30 composed of a stepping motor installed at the right end on the base frame 2, and a timing pulley driven by the power from the X-axis motor 30. A timing belt 33 driven via the first and second timing belts 31 and 32; an X-axis carriage 34 connected to the timing belt 33; and a Y-axis frame portion 23b of the right extension frame 23 provided on the upper surface of the X-axis carriage 34. And guide rails 37 for guiding the X-axis carriage 34 in the X-axis direction.

The Y-axis moving mechanism 14 is disposed on both left and right sides of the base frame 2 and is driven by one shared Y-axis motor 40 composed of a stepping motor installed on the upper rear center of the base frame 2. Things.
Each of the Y-axis moving mechanisms 14 is driven by a power transmitted from the Y-axis motor 40 via a transmission shaft 41 to the timing pulley 4.
A timing belt 44 driven via
A Y-axis carriage 45 connected to the timing belt 44, and a guide provided on the upper surface of the Y-axis carriage 45 and engaged with the guide grooves 25 of the X-axis frame portions 23a and 24a of the left and right extension frames 23 and 24. Rollers 46 and 47 and the Y
Guide rail 4 for guiding shaft carriage 45 in the Y-axis direction
8 is provided.

The movable frame 11 and its X-axis and Y-axis moving mechanisms 13 and 14 not only function as a feeder of the flat embroidery frame 9 but also function as a component of a driving device of the bent fabric frame 8. I do. Further, the drive device for the curved cloth-stretched frame 8 is provided with the Y-axis moving frame 12, the curved cloth-stretched frame driver 50, and its drive guide mechanism 51, which are unique to the present invention. Therefore, the Y-axis moving frame 12, the curved cloth-clad frame driving body 50, and the drive guide mechanism 51 thereof will be described with reference to FIGS. FIG. 3 is a perspective view showing a Y-axis moving frame, a curved cloth-clad frame driving body, and the like. FIG. 4 is an exploded perspective view showing a state in which the curved cloth-clad frame driving body is removed from the movable frame and the Y-axis moving frame. FIG. 6 is a front view showing a curved cloth frame driving body, FIG. 6 is a plan view thereof, and FIG. 7 is a side view thereof. 8 is a front enlarged cross-sectional view showing a guide mechanism of a curved cloth frame driving body, FIG. 9 is a side enlarged cross-sectional view showing a connection state of a frame holding member, a driving guide, and a Y-axis moving frame. FIG. 11 is an exploded perspective view showing a connection state between a driving bracket and a connection bracket of a Y-axis moving frame.

As shown in FIGS. 2 and 3, the Y-axis moving frame 12 has a cross section substantially similar to that of the movable frame 11, and extends in the left-right direction along the X-axis frame portion 11a of the movable frame 11. It is formed long. The Y-axis moving frame 12 is disposed above the movable frame 11, and is fixed to the left and right Y-axis carriages 45 by screws 54a and 54b via a connecting member 53 having a crank shape in a side view. Also, Y-axis moving frame 1
As shown in FIG. 3, guide rollers 11 arranged above the movable frame 11 have guide grooves 11a formed inside the guide frame 11a.
Since the b and 11c are engaged and the force applied to the Y-axis moving frame 12 is distributed to the movable frame 11 via the guide rollers 11b and 11c, the apparent rigidity of the Y-axis moving frame 12 is improved. , The Y-axis moving frame 12 is less likely to bend, and the positioning accuracy is improved. Therefore, the Y-axis moving frame 12 moves in the Y-axis direction along with the movement of the Y-axis carriage 45 in the Y-axis direction, but does not follow the movement of the movable frame 11 in the X-axis direction. .

Next, the curved cloth frame driving body 50 will be described. As shown in FIG. 3, the curved upholstered frame driving body 50 includes, as shown in FIG. 3, a rotating frame 55 for holding a curved upholstered frame that is rotatable around the center of curvature of the curved upholstered frame 8. A frame holding member 56 for holding the rotating frame 55 and connecting the rotating frame 55 to the Y-axis moving frame 12 and a movable frame 11 so as to move with the movement of the movable frame 11 in the X-axis direction. A wire support 57 is provided, and one end of the wire support 57 is connected to the wire support 57 in order to convert the linear movement of the wire support 57 in the X-axis direction into the rotation of the rotation frame 55. A pair of drive wires 5 connected to each other and the other end connected to the rotating frame 55
8a and 58b, and an engagement guide 59 fixed to the frame holding member 56 and engaged with the wire support 57 so as to guide the wire support 57 in the X-axis direction.
Then, as shown in FIG. 4, the rotating frame 55, the frame holding member 56, the wire support 57, and the driving wires 58a, 58b
And the engagement guide body 59 is unitized as the curved cloth frame driving body 50.

As shown in FIG. 3, the curved cloth tension frame 8 is composed of a curved cloth supporting frame 61 and a holding frame 62, and a cap 63 and the like placed and supported on the curved cloth supporting frame 61. The front surface of the curved cloth is pressed by the holding frame 62. As shown in FIG. 4, the rotating frame 55 is formed in a semi-cylindrical shape, and its lower end is connected by a connecting piece 67. Then, at a plurality of locations on the outer peripheral surface of the rotating frame 55,
An attachment claw 66 having a roller 65 at its tip is provided. By fitting the roller 65 into an attachment hole 68 (see FIG. 3) of the curved cloth support frame 61 of the curved cloth tension frame 8, the curved cloth tension frame 8 is formed. Are attached to the rotating frame 55.

As shown in FIGS. 5, 7, and 8, the frame holding member 56 is formed in a substantially U-shape that is open upward when viewed from the front, and has a pair of holding rollers on the left and right sides on the front surface. 71 and 72 are rotatably supported. The rotating frame 55 is positioned between the holding rollers 71 and 72 by the curved clothed frame 8.
Is rotatably sandwiched so that the center of curvature is the rotation center. As shown in FIG. 7, a fixing piece 75 for connecting to a fixing piece 74 at each of the left and right ends of the engagement guide body 59 is formed at the upper left and right ends of the frame holding member 56 on the front side. The frame holding member 56 and the engagement guide 59 are integrally fixed by connecting the fixing pieces 74 and 75 with the screw 77. Therefore, the frame holding member 56 and the engagement guide body 59 may be collectively referred to as a frame holding body 60. Further, the upper end portions of the frame holding member 56
As shown in FIG. 7, a connecting piece 82, which is a component of a connecting portion 81 capable of adjusting a tilt and a vertical position with respect to a driving guide body 80 described later, is bent. As shown in FIGS. 5, 7, and 9, a position adjusting bolt 83 and a connecting bolt 84 for a bush 85 are screwed to the lower center of the frame holding member 56, respectively.

As shown in FIGS. 5 and 6, the wire support member 57 is attached to the movable frame 11 by screws 86, and is long in the X-axis direction. And a wire hooking member 89 supported so as to be finely adjustable in the axial direction. Elongated holes 90 are formed at both left and right ends of the wire support member 87 so that the screw 91 can be finely moved in the X-axis direction. The screw connection hole 86a of the wire support 87 is formed as a notch so that the wire support 87 can be easily attached to and detached from the movable frame 11, as shown in FIGS. For this reason, it is possible to move in the front-rear direction with respect to the movable frame 11,
After the drive guide 80 and the frame holding member 56 are tightened, the wire support member 87 of the wire support 57 is fixed to the movable frame 11.

Further, as shown in FIGS. 5 and 6, a rail member 92 is fixed to the front of the wire support member 87 so as to be long in the X-axis direction. As shown in FIGS. 6 and 9, the rail member 92 has vertical walls 92a and 92b at its front and rear portions for preventing the roller 95 of the engagement guide body 59 to be described later from coming off in the front-rear direction (Y-axis direction). Are bent, and as shown in FIG.
Stopper wall 92 for preventing the escape in the X-axis direction
c is formed. As shown in FIG. 5, each of the wire hooking members 89 is formed in an L-shape when viewed from the front, and one end of each of the drive wires 58a and 58b is fixed to an inner end thereof by a screw 97. It is attached to the lower surface of the part.

The pair of drive wires 58a and 58b are
As shown in FIG. 5, one end of each
9, and the other end crosses each other in an X shape and is attached to the lower end of the outer peripheral surface of the rotating frame 55 by a screw 98. Therefore, when the wire support 57 moves to the left in FIG. 5, the drive wire 58a attached to the left end of the wire support 57 is pulled to the left, and the rotating frame 55 rotates left. When the wire support 57 moves rightward in FIG. 5, the drive wire 58b attached to the right end of the wire support 57 is pulled rightward, and the rotating frame 55 rotates rightward. It has become.

As shown in FIGS. 5 and 9, the engagement guide body 59 is provided so as to sandwich the roller support body 100 fixed to the frame holding member 56 and the wire support body 57 from above and below. 1 rotatably supported by the roller receiver 100
A pair of rollers 95 and 96 are provided. As shown in FIGS. 5 and 9, the roller receiver 100 is disposed above the rotating frame 55 and in front of the frame holding member 56 in order to avoid the arrangement of the driving wires 58a and 58b. At both left and right ends, screws 77 are attached to fixing pieces 75 of the frame holding member 56.
The fixing piece 74 that is connected and fixed is bent toward the rear side. The rollers 95 and 96 are, as shown in FIG.
A pair of rollers is disposed on each of the left and right sides of the roller receiver 100. Of the pair of rollers 95 and 96, the upper roller 95 is engaged with the rail member 92 of the wire support 57, and Roller 96 is in rolling contact with the lower surface of the wire support 57.

Accordingly, since the wire support 57 is sandwiched between the upper and lower rollers 95 and 96, at least the engagement guide 59 is prevented from falling off the wire support 57 in the vertical direction. Further, the upper roller 95 is connected to the wire support 57.
Of the rail member 92, the engagement guide body 59 is prevented from coming off in the front-rear direction (Y-axis direction). Further, left and right stopper walls 92c of the rail member 92 of the wire support 57 are provided.
Thus, the engagement guide body 59 is prevented from coming off in the left-right direction. Therefore, if the rotating frame 55 is held on the frame holding member 56 by the rollers 71 and 72, and the frame holding member 56 is fixed to the engagement guide 59 and the engagement guide 59 is engaged with the wire support 57, These are integrated, and can be unitized as the bent-up frame driving body 50.

Next, a driving guide mechanism 51 for guiding the unitized driving body 50 in the Y-axis direction is mainly shown in FIGS.
A description will be given based on FIG. As shown in FIGS. 8 to 10, the drive guide mechanism 51 includes a guide rail plate 113 fixed to the lower surface of the bed portion 10 of the sewing machine 3 with a screw 112 via a rail base 111 and the frame holding member 56. A drive guide body 80 connected and fixed by a position adjustment fastening screw 115 and the vertical position adjustment bolt 83 described later, and connected to the Y-axis moving frame 12;
The first Y-axis guide portion 118 and the second Y-axis guide provided at the left and right ends of the drive guide body 80 in the X-axis direction with the rotation center of the rotation frame 55 interposed therebetween so as to move in the Y-axis direction. Part 11
9 is provided.

As shown in FIG. 8, the first Y-axis guide portion 118 is provided with the drive guide so as to sandwich the guide rail plate 113 from above and below at one end of the guide rail plate 113 in the X-axis direction. A pair of guide rollers 122 and 123 rotatably supported by a body 80 via a support block 121
It is composed of As shown in FIG. 9, the second Y-axis guide section 119 is provided at the other end of the guide rail plate 113 in the X-axis direction, with the axial direction being the Y-axis direction.
A guide shaft 125 having both ends fixed by screws 128 via blocks 124, as shown in FIG.
5 and slidably fitted in the Y-axis direction.
And a guide block 127 fixed by screws 126.

As shown in FIG. 8, the drive guide body 80 has left and right connecting plates 130 and 131 and a connecting plate 132 connecting the lower ends thereof integrally formed in a substantially U-shape opened upward when viewed from the front. Is formed. And the right connecting plate 13
0, the guide block 127 is fixed, and the support block 121 is fixed to the left connecting plate 131. Further, the Y-axis moving frame 12 is provided on the left and right connecting plates 130 and 131.
A connecting portion 145 to be described later for connecting with the fixing member is fixed by a screw 144. The rail base 111, the guide rail plate 113, the first Y-axis guide 118, the second Y-axis guide 119, the drive guide 80, and the connecting part 145 are unitized.

Next, the structure of the connecting portion 135 for connecting the unitized driving body 50 and the unitized driving guide mechanism 51 will be described mainly with reference to FIGS. The drive guide body 80 is connected to the left and right connecting plates 1.
The distance between the inner ends of the frame holders 30 and 131 is set equal to the distance between the outer ends of the left and right connecting pieces 81 of the frame holding member 56, and the connecting pieces 81 of the frame holding member 56 are connected to the connecting plates 130 and
When it overlaps with 131, the position of the frame holding member 56 in the left-right direction is regulated. The connecting plates 130 and 131 of the driving guide body 80 are formed with a position adjusting hole 133 for screw fitting for connecting the frame holding member 56, and the position adjusting hole 133 is a fastening screw for position adjusting. The diameter is larger than the diameter of 115. The position adjusting hole 133, the connecting plates 130 and 131, the frame holding member 56
With the connecting piece 81 and the fastening screw 115 for position adjustment,
A connecting portion 135 is configured to enable fine movement adjustment of the frame holding member 56 with respect to the drive guide body 80 in the up-down and front-rear directions. As shown in FIG. 5, the connection hole 137 of the position adjusting bolt 83 at the front center of the transfer plate 132 is formed as a cutout hole so that the vertical position of the frame holding member 56 can be adjusted.

The frame holding member 56 of the curved cloth frame driving body 50 can be inserted into the driving guide 80 from above. The center of the frame holding member 56 is aligned with the center of the drive guide 80, and the center of the drive guide 80 and the frame holding member 56 is aligned by the vertical position adjustment bolt 83. At this time, the connecting pieces 82 at the left and right ends of the frame holding member 56 enter between the connecting plates 130 and 131 of the drive guide 80, and the position of the frame holding member 56 in the left and right direction is positioned. Further, the frame holding member 5
6 and the connecting portion 81 of the driving guide body 80 are temporarily fixed by the fastening screw 115, and the curved cloth frame driving body 50 and the driving guide mechanism 51
And are integrally assembled.

Next, the drive guide body 80 and the Y-axis moving frame 1
3 and FIG. 6.
A description will be given based on FIGS. 9 and 11. This coupling mechanism 140
As shown in FIGS. 6 and 9, the connecting bracket 1 is fixed to the upper surface of the Y-axis moving frame 12 with a screw 141 and has, at the rear end, a hanging piece 142 hanging down the rear side of the movable frame 11.
43, a connecting portion 145 fixed to a rear portion of the drive guide body 80 by a screw 144, and a connecting pin 14 serving as a connecting member for connecting the connecting portion 145 and the hanging piece 142.
6 is comprised.

As shown in FIG. 11, a screw hole 147 is formed in the hanging piece 142, and a long hole 14 is formed in the connecting pin 146 so that its vertical position can be adjusted.
8 are formed. And, the connection pin 146 is
It is fixed to the hanging piece 142 by a screw 149. As shown in FIG. 11, the connecting pin 146 is formed in a semi-cylindrical shape by vertically dividing a columnar member at a connecting portion side with the hanging piece 142, and connecting with the driving guide body 80 side. The part side is formed in a tapered shape. As shown in FIG. 11, the connecting portion 145 on the drive guide body 80 side
6 and a holding piece 151 for holding the connecting bush 150.
As shown in FIG. 11, the connection bush 150 has a long hole 152 formed in the X-axis direction.
The dimension D in the axial direction is set to the same size as the diameter of the connection pin 146. Further, the holding piece 151 is
4, the left and right connecting plates 130, 1 of the drive guide body 80
31.

Next, a description will be given of an operation of attaching the curved cloth-clad frame driving device of the present invention to an embroidery machine. First, Y-axis moving frame 1
2, the Y-axis moving frame 12 and the Y-axis carriage 45 are fixed by screws 54a and 54b via a connecting member 53, as shown in FIG. Then, the Y-axis moving frame 12 also moves in the Y-axis direction due to the movement of the Y-axis carriage 45 in the Y-axis direction. On the other hand, the movable frame 1
1 moves in the Y-axis direction by movement of the Y-axis carriage 45 and moves in the X-axis direction by movement of the X-axis carriage 34 in the X-axis direction. Therefore, even if the movable frame 11 moves in the X-axis direction, it does not move in the X-axis direction.

Next, since the curved upholstered driving body 50 and the drive guide mechanism 51 are integrally assembled, the curved upholstered driving body 50 and the drive guide mechanism 51 are connected to each other by the rotating frame 55 of the sewing machine 3. From the front so as to surround the bed part 10. Then, the wire support 57 is attached to the movable frame 11 with the screw 86. Next, the drive guide mechanism 51 is attached and fixed to the bed portion 10 of the sewing machine 3 with screws 112. Then, the curved upholstered frame 8 is attached to the rotating frame 55, and the sewing machine 3 of the curved upholstered frame 8 is attached.
After adjusting the height and inclination from the bed portion 10, the connecting portion 81 of the frame holding member 56 and the drive guide body 80 is fixed by the position adjusting bolt 83 and the fastening screw 115. At this time, the diameter of the adjustment hole 133 of the drive guide body 80 is
5 is formed to be larger than the diameter of the driving guide body 8.
The frame holding member 56 can be finely moved in the vertical and vertical directions with respect to 0. Then, the frame holding member 56 is connected to the drive guide 8.
The position is adjusted by fine adjustment in the vertical direction and the front-back direction with respect to 0, and the position is adjusted. This makes it possible to adjust not only the position of the upholstered frame 8 in the up-down direction and the front-back direction, but also the inclination of the upholstered frame 8 at the same time.

Next, a method of connecting the drive guide 80 attached to the bed 10 of the sewing machine 3 and the Y-axis moving frame 12 attached to the Y-axis carriage 45 will be described. First, the connecting bracket 143 is attached to the Y-axis moving frame 12 with the screws 14.
1 and then connect the connecting pin 146 to the connecting portion 145.
Of the connecting bush 150 so as to have a predetermined fitting length.
It is fixed to the hanging piece 143 of the connection bracket 143. Then, the Y-axis moving frame 12 and the driving guide body 80 have a degree of freedom in the vertical direction by the connecting pin 146, and are attached to the driving guide body 80 even if the Y-axis moving frame 12 that is long in the X-axis direction is bent up and down. It is hard to affect the curved upholstered frame 8. In addition, the connection pin 146 is connected to the long hole 15 of the connection bush 150.
2, the drive guide body 80 and the curved upholstery frame 8 follow the movement of the Y-axis moving frame 12 in the Y-axis direction.

[0035] With the bent cloth upholstery frame 8 thus attached,
The movement of the movable frame 11 in the X-axis direction causes the wire support 5 to move.
7 moves to the left in FIG.
The driving wire 58 attached to the left end of the frame is pulled to the left, the turning frame 55 turns to the left, and the bent fabric covering frame 8 turns to the left. When the wire support 57 moves rightward in FIG. 5, the drive wires 58a and 58b attached to the right end of the wire support 57 are pulled rightward, and the rotating frame 55 rotates rightward. Then, the curved upholstery frame 8 rotates clockwise. On the other hand, when the Y-axis carriage 45 moves in the Y-axis direction, the Y-axis moving frame 12 moves in the Y-axis direction following the movement. By the movement of the Y-axis moving frame 12 in the Y-axis direction, the drive guide 80 connected by the connecting pin 146 moves in the Y-axis direction, and the frame holding member 5 connected to the drive guide 80 is moved.
6. The rotating frame 55 and the bent frame 8 move in the Y-axis direction.

When the drive guide 80 moves in the Y-axis direction, the rollers 122,
123 so as to sandwich the guide rail plate 113,
Rolls on the guide rail plate 113, and in the second Y-axis guide portion 119, the drive guide 80 is guided in the Y-axis direction by the guide shaft 125 via the guide block 127. The first Y-axis guide section 118 and the second Y-axis guide section 119 are provided on both sides of the bed section 10 of the sewing machine 3, and have a structure in which the drive guide body 80 is supported by the bed section 10 at both ends. Therefore, the movement of the drive guide body 80 is stable, and therefore, the movement of the curved upholstery frame 8 in the Y-axis direction is also stable. Therefore, the needle drop position of the bed portion 10 of the sewing machine 3 and the positional accuracy of the curved cloth upholstery frame 8 are improved.

When embroidering on a flat cloth, a raw fabric frame large enough to be mounted inside the movable frame 11 is attached to the movable frame 11, and the flat fabric is put on the raw fabric frame. A flat embroidery frame of a predetermined size holding a planar cloth is fixed to the movable frame 11 so as to be held by a clip or to face each sewing machine 3. Then, as the movable frame 11 moves in the X-axis and Y-axis directions, the original frame or the flat embroidery frame moves by the same amount in the X-axis and Y-axis directions. At this time, the Y-axis moving frame 12 used for moving the curved upholstered frame 8 in the Y-axis direction is the X-axis frame portion 11a of the movable frame 11.
And there is no problem when attaching a flat embroidery frame or the like. Therefore, since the Y-axis moving frame 12 can be left attached to the Y-axis carriage 45, the flat embroidery frame and the curved cloth-stretched frame 8 are simultaneously attached to the movable frame 11 to form a flat cloth and a curved cloth. Can be embroidered at the same time. Also,
As described above, once the Y-axis moving frame 12 is attached, it is not necessary to remove the Y-axis moving frame even when embroidering on a flat fabric, so that the time for attaching and detaching the frame can be reduced. Furthermore,
Even when performing embroidery on a flat fabric, the Y-axis moving frame 12 functions as a reinforcing material for the movable frame 11.

Incidentally, the drive guide mechanism 51 is not limited to the structure using the guide shaft 125 and the guide block 127 for the second Y-axis guide portion 119 as in the above embodiment, but as shown in FIG. The first Y-axis guide 1 is also used in the guide 119.
Similarly to 18, the guide rail plate 113 may be sandwiched by upper and lower guide rollers 122 and 123.
In this case, in order to prevent inclination of the curved upholstery frame 8 in the front-rear direction,
It is desirable that at least three rollers 122 and 123 support the guide rail plate 113 at three points.

In the above embodiment, the engagement guide 59
Is composed of the roller receiver 100 and the rollers 95 and 96. However, the present invention is not limited to this, and any structure that can prevent the wire support 57 from falling off in the front-rear direction and the vertical direction may be used. Of course, it may be constituted from. Further, the frame holding member 56 is
In the above embodiment, the diameter of the hole into which the screw 115 is fitted is set to a large diameter in order to enable the position adjustment in the front-rear direction and the vertical direction, but the hole is not limited to a round hole. It may be a long hole. In the above embodiment, the connecting pin 146 connecting the Y-axis moving frame 12 and the driving guide body 80 is
The drive guide body side may be fixed, and the Y-axis moving frame side may be configured to be vertically movable. Further, in the connection portion between the frame holding member 56 and the driving guide body 80, in the above embodiment, the adjusting hole 133 having a diameter larger than the fastening screw 115 is formed on the driving guide body side, but the adjusting hole 133 is formed on the holding member side. It may be formed, or at least one of them may be formed. Further, the guide rollers 11b, 11 of the movable frame 11 of the above embodiment are used.
Other sliding members may be used instead of c. Further, the present invention is not limited to the multi-head type embroidery machine as in the above-described embodiment, but can be applied to a single-head type embroidery machine. In this case, the Y-axis moving frame is, in the above-described embodiment, a plurality of curved upholstered frames 8.
Are formed to be simultaneously moved in the Y-axis direction synchronously. However, in a single-head type embroidery machine, this is not necessary, and the Y-axis moving frame is moved to the movable frame 11 synchronously only in the Y-axis direction. It is sufficient that they are engaged.

[0040]

As described above, according to the curved-stretched-frame driving device for a sewing machine according to the first aspect, the frame holder is connected to the drive guide so that the tilt and the vertical position can be adjusted. Because of the provision of the portion, the vertical direction and the inclination can be adjusted at the same time at the connecting portion between the drive guide and the frame holding member, and there is an excellent effect that the work of attaching the bent fabric frame can be easily performed. Moreover, according to the curved upholstery frame driving device of the sewing machine of the present invention, the diameter of the adjusting hole of the connecting portion is formed to be larger than the diameter of the fastening screw. The adjustment of the vertical direction and the inclination can be performed at once.

[Brief description of the drawings]

FIG. 1 is a perspective view of a multi-head embroidery machine showing one embodiment of the present invention.

FIG. 2 is a schematic plan view showing a state where an arm portion of a sewing machine of the embroidery machine and a protective cover of a moving mechanism are removed.

FIG. 3 is a perspective view illustrating a Y-axis moving frame, a curved cloth frame driving body, and the like.

FIG. 4 is an exploded perspective view showing a state in which the curved cloth frame driving body is removed from the movable frame and the Y-axis moving frame.

FIG. 5 is a front view showing a curved upholstered frame driving body.

FIG. 6 is a plan view of the same.

FIG. 7 is a side view of the same.

FIG. 8 is an enlarged front sectional view showing a frame holding member guide mechanism of the driving body.

FIG. 9 is an enlarged side sectional view showing a connection state of the frame holding member, the drive guide, and the Y-axis moving frame.

FIG. 10 is an enlarged sectional plan view showing a guide mechanism of the frame holding member.

FIG. 11 is an exploded perspective view showing a connection state between a connection bracket of a Y-axis moving frame and a drive guide.

FIG. 12 is a front view of a drive guide mechanism in a curved upholstered frame drive device showing another embodiment of the present invention.

FIG. 13 is a side view of a curved cloth tension frame driving device of a conventional embroidery machine.

[Explanation of symbols]

 Reference Signs List 3 sewing machine 8 curved cloth-clad frame 9 flat embroidery frame 10 bed section 11 movable frame 12 Y-axis moving frame 13 X-axis moving mechanism 14 Y-axis moving mechanism 30 X-axis motor 33 timing belt 34 X-axis carriage 40 Y-axis motor 44 timing belt 45 Y-axis carriage 50 Curved cloth tension frame drive 51 Drive guide mechanism 53 Connecting member 55 Rotating frame 56 Frame holding member 57 Wire support 58a, 58b Drive wire 59 Engagement guide 60 Frame holder 71, 72 Holding roller 80 Drive guide body 81 Connecting section 83 Position adjustment bolt 92 Rail member 95, 96 Roller 100 Roller receiver 111 Rail stand 115 Fastening screw 113 Guide rail plate 118 First Y-axis guide section 119 Second Y-axis guide section 121 Support blocks 122, 123 Guide Roller 125 Guide shaft 126 Guide block 130, 13 Connecting plate 133 positioning hole 135 connecting portion 140 connecting mechanism 142 depending member 143 connecting bracket 145 connecting portion 146 connecting pin 150 connecting bushing

Continuation of front page (56) References JP-A-63-120158 (JP, A) JP-A-61-186564 (JP, A) JP-A-4-13692 (JP, U) Utility model registration 2563671 (JP, Y2) Japanese Patent Publication No. 4-40467 (JP, B2) (58) Fields investigated (Int. Cl. ⁷ , DB name) D05B 21/00 D05B 39/00 D05C 9/00-9/22

Claims (2)

(57) [Claims] A movable frame movable in the X-axis direction; and a Y-axis movable frame movable in the Y-axis direction. The rotation is converted into the rotational movement of the curved upholstery frame about the center of rotation, and the Y
By the movement in the axial direction, in a curved cloth tensioning frame driving device of a sewing machine that performs sewing on a cloth stretched in a curved shape on a curved cloth tensioning frame, it is possible to rotate around a curvature center of the curved cloth tensioning frame as a rotation center. A rotating frame for mounting the curved cloth tensioning frame, a frame holder for rotatably holding the rotating frame, a drive guide for guiding the frame holder in the Y-axis direction, and the frame holder And a connecting portion that connects the drive guide body with respect to the drive guide body so that the tilt and the vertical position thereof can be adjusted. 2. The connecting portion is provided on at least one of the frame holding body and the driving guide body for connecting the frame holding body to a driving guide body, and has a larger diameter than the fastening screw. The bending cloth frame driving device for a sewing machine according to claim 1, further comprising an adjustment hole for fitting a fastening screw.