JPH06142361A - Curved fabric stretching frame driving device for sewing machine - Google Patents

Abstract

PURPOSE:To simplify the attaching work of a frame holding member to a Y axis movable frame easily, cope with a deflection, etc., of the Y axis movable frame 12, and make it possible to embroider the same pattern on a plurality of fabrics with a good precision, in a curved fabric stretching frame driving device. CONSTITUTION:By connecting a drive guiding body 80 and Y axis movable frame 12 by a connecting pin 146 which is fitted in the connecting part in such a manner that the connecting pin 146 is vertically movable but unmovable in the Y axis direction, even when the Y axis movable frame 12, which is long in the X axis direction, is vertically deflected, the effect is not given to a curved fabric stretching frame which is attached to the drive guiding body 80. Then, by the movement of a movable frame 11 in the X axis direction, a driving wire, one end of which is connected to a wire supporting body, moves in the X axis direction, and the motion of a turning frame is converted to a turning motion with the center of curvature of the curved fabric stretching frame as its pivotal center. Also, by the movement of the Y axis movable frame 12 in the Y axis direction, a frame holding member 56 and the turning frame are moved in the Y axis direction.

Description

Detailed Description of the Invention

[0001]

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

[0002]

2. Description of the Related Art Conventionally, as a bending cloth tension frame driving device of this type of sewing machine, as shown in FIG. 13, a movable frame 200 movable in the X-axis direction and a Y-axis movement movable in the Y-axis direction. Frame 2
01, a rotary frame 202 for mounting the flexible cloth tension frame that is rotatable around the curvature center of the flexible cloth tension frame, and a frame holder 203 that rotatably holds the rotary frame 202. And a guide member 204 fixed to the frame holder 203 and guiding the frame holder 203 in the Y-axis direction, and a connecting member 205 connecting the frame holder 203 and the Y-axis moving frame 201. The linear movement of the movable frame 200 in the X-axis direction is converted by the conversion lever 206 into the rotational movement of the bending cloth tension frame with the curvature center of the bending cloth tension frame as the rotation center, and the Y axis movement frame. Y
By the movement in the axial direction, embroidery is performed on the cloth stretched in a curved shape on the curved cloth tension frame. Then, in the work of attaching the bending cloth tension frame, first, the Y-axis moving frame 201 is arranged on the upper side of the movable frame 200, and the bending cloth tension frame is attached to the rotating frame 202.
The frame holding body 203 holding the rotating frame 202 is connected to the drive guide body 204 by a screw 207, and then the connecting member 20 is connected.
5, the frame holder 203 and the Y-axis moving frame 201 are connected by screws 208 and 209.

[0003]

However, in the above-mentioned conventional sewing machine, the height of the curved cloth tension frame from the bed portion 211 of the sewing machine 210 becomes a problem when performing embroidery on a curved cloth. Therefore, the heights of the bending cloth tension frame and the sewing machine bed portion 211 must be adjusted after the bending cloth tension frame is attached to the rotating frame 202. Therefore, the height of the frame holder 203 with respect to the Y-axis moving frame 201 must be adjusted by removing the screwed portion of the connecting member 205 that fixes the Y-axis moving frame 201 and the frame holder 203 once fixed. There is a problem that the adjustment work becomes complicated.

In a multi-head embroidery machine, when a plurality of cloths are embroidered with the same pattern at the same time, a plurality of curved cloth tension frames are synchronized, so that the Y-axis moving frame 201 is formed long in the X-axis direction. Is common. Therefore, the Y-axis moving frame 201 is easily bent in the vertical direction, and the height position of the frame holder 203 fixed to the Y-axis moving frame 201 by the connecting member 205 is easily changed. Then, the height position of the curved cloth tension frame also changes, and the height with the sewing machine bed portion 211 changes,
There is a problem that the same pattern cannot be embroidered on multiple fabrics.

The present invention has been made to solve the above problems, and its purpose is to simplify the work of attaching the frame holder to the Y-axis moving frame and to prevent the Y-axis moving frame from bending. The present invention is to provide a bending cloth tension frame drive device of a sewing machine that can handle the same pattern on a plurality of cloths with high accuracy.

[0006]

In order to achieve the above object, a curved cloth tension frame driving device for a sewing machine according to a first aspect of the present invention is movable in the X-axis direction and movable in the Y-axis direction. And a Y-axis moving frame, which converts linear movement of the movable frame in the X-axis direction into rotational movement of the bending cloth tensioning frame having a center of curvature of the bending cloth tension frame as a rotation center, and also a Y axis movement frame. By the movement in the Y-axis direction,
A rotating frame for mounting a curved cloth tension frame, which is configured to perform sewing on a cloth stretched in a curved shape on the curved cloth tension frame and is rotatable around a curvature center of the curved cloth tension frame as a rotation center. A frame holder that rotatably holds the rotating frame, a drive guide body that is fixed to the frame holder and guides the frame holder in the Y-axis direction, the drive guide body, and the Y-axis moving frame. And a connecting member for detachably connecting the driving guide body and the Y
It is fixed to one of the shaft moving frames, and the other end is fitted to a connecting portion provided on the drive guide body and the other of the Y axis moving frames so as to be vertically movable but immovable in the Y axis direction. Have been combined. Further, according to a bending cloth tension frame driving device of a sewing machine according to a second aspect of the present invention, there is provided a turning frame for mounting a bending cloth tension frame, which is rotatable about a curvature center of the bending cloth tension frame, and a rotation thereof. A frame holder that rotatably holds the frame and a connecting member that detachably connects the frame holder and the Y-axis moving frame are provided. One end of the connecting member moves the frame holder and the Y-axis. The frame is fixed to one of the frames, and the other end is fitted to a connecting portion provided on the frame holder and the other of the Y-axis moving frames so as to be vertically movable but immovable in the Y-axis direction. ing.

[0007]

In the curved cloth tension frame driving device for a sewing machine according to claim 1 having the above structure, when the movable frame is moved in the X-axis direction, the linear movement in the X-axis direction of the rotary frame is performed via the conversion mechanism. Converted into a rotational movement. Further, when the Y-axis moving frame is moved in the Y-axis direction, the frame holder is attached to the Y-axis moving frame via the drive guide, so that the frame holder and the rotary frame held by the frame holder are also attached to the Y-axis. Direction, and the bending cloth tension frame moves in the Y-axis direction. The drive guide body and the Y-axis moving frame are connected by a connecting member fitted in the connecting portion so as to be vertically movable and immovable in the Y-axis direction. For that reason,
The connection work between the Y-axis moving frame and the drive guide can be easily performed,
Further, the Y-axis moving frame and the drive guide body have a freedom in the vertical direction by the connecting member, and even if the Y-axis moving frame long in the X-axis direction bends up and down, the curved cloth tension frame is attached to the drive guide body. Hard to affect. Moreover, since the Y-axis moving frame and the drive guide body have a degree of freedom in the vertical direction by the connecting member, the load applied from the Y-axis moving frame to the drive guide body side can be reduced.

Further, as in the curved cloth tension frame driving device for a sewing machine according to a second aspect, even when the frame holding body is directly coupled without being coupled via the drive guide body as in the first aspect, Similarly to the above, due to the presence of the connecting member, the connecting work between the Y-axis moving frame and the frame holding body can be easily performed, and the Y-axis moving frame and the frame holding body have a degree of freedom in the vertical direction. Even if the Y-axis moving frame that is long in the X-axis direction bends in the vertical direction, it does not easily affect the bending cloth tension frame.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. This embodiment is a case where the bending cloth tension 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.
It is a schematic plan view which shows the state which removed the arm cover of a sewing machine and the protective cover of a moving mechanism. As shown in FIG. 1, a multi-head embroidery machine 1 of this embodiment has a horizontally long base frame 2
Three sewing machines 3 are juxtaposed in the rear portion of the upper surface of the sewing machine 3, 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. Further, a table 7 which is switchable between an upper position and a lower position according to the shape of the cloth to be embroidered is arranged on the front portion of the upper surface of the base frame 2.
A bed portion 10 is formed below the arm portion 4 so as to extend from the sewing machine body.

Above the table 7, FIG.
As shown in FIG. 5, a movable frame 11 for mounting the curved cloth tension frame 8 and the flat embroidery frame 9 and a Y-axis moving frame 12 arranged so as 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 portion 10 of the sewing machine 3, and the movable frames 11 and Y.
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.

Further, each sewing machine 3 has a base frame 2
Power is transmitted from one sewing machine motor (not shown) installed in the vehicle through the drive belt 16. Although not shown, a multi-needle case moving mechanism for horizontally moving the desired needle bar 5 of the multi-needle case 6 to a position directly above the needle drop hole of the bed portion 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. are shown in FIG.
As shown in FIG. 3, the operation panel 18 provided at the end of the base frame 2 controls the operation by numerical control. Also,
On the upper surface of the arm portion 4 of the sewing machine 3, twelve conical spools 19 are arranged corresponding to twelve needle bars 5.

As shown in FIG. 2, the movable frame 11 has a rectangular movable frame main body 22 to which the curved cloth tension frame 8 and the embroidery frame 9 are attached.
And rectangular extension frames 23 and 24 fixed to both ends of the movable frame body 22 in the X-axis direction.
24 X-axis frame portions 23a, 24a and Y-axis frame portions 23b, 2
Roller guide grooves 25 and 26 are formed in 4b, respectively. Further, as shown in FIG. 9, guide rollers 11b and 11c that engage with guide grooves 12a 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 including a stepping motor installed at the right end of the base frame 2, and a timing pulley driven by the X-axis motor 30. A timing belt 33 driven via 31, 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. Guide rollers 35 and 36 that engage with the guide groove 26 and a guide rail 37 that guides the X-axis carriage 34 in the X-axis direction.

The Y-axis moving mechanism 14 is arranged on both left and right sides of the base frame 2 and is driven by one shared Y-axis motor 40, which is a stepping motor installed on the rear central upper surface of the base frame 2. It is a thing.
Each Y-axis moving mechanism 14 uses the power transmitted from the Y-axis motor 40 via the transmission shaft 41 to drive the timing pulley 4
2, a timing belt 44 driven via 2,
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. The rollers 46, 47 and the Y
Guide rail 4 for guiding the shaft carriage 45 in the Y-axis direction
8 and.

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

As shown in FIGS. 2 and 3, the Y-axis moving frame 12 is formed to have a cross-sectional shape substantially similar to that of the movable frame 11 and to the left and right along the X-axis frame portion 11a of the movable frame 11. It is formed long. The Y-axis moving frame 12 is arranged above the movable frame 11 and is fixed to the left and right Y-axis carriages 45 with screws 54a and 54b via a crank-shaped connecting member 53 in a side view. In addition, the Y-axis moving frame 1
As shown in FIG. 3, the guide groove 12a formed inside the guide roller 11 is provided above the movable frame 11.
Since the b and 11c are engaged and the force applied to the Y-axis moving frame 12 is dispersed 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 as the Y-axis carriage 45 moves in the Y-axis direction, but does not follow the movement of the movable frame 11 in the X-axis direction. .

Next, the bending cloth tension frame driving body 50 will be described. As shown in FIG. 3, the bending cloth tension frame driving body 50 includes a rotation frame 55 for holding the bending cloth tension frame, which is rotatable about the curvature center of the bending cloth tension frame 8 as a rotation center. A frame holding member 56 for holding the rotating frame 55 and connecting it to the Y-axis moving frame 12, and the movable frame 11 so as to move along with the movement of the movable frame 11 in the X-axis direction. The wire support 57 is attached, and one end of the wire support 57 is attached to the wire support 57 in order to convert the linear motion of the wire support 57 in the X-axis direction into the rotary motion of the rotary 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 body 59 fixed to the frame holding member 56 and engaged with the wire support body 57 so as to guide the wire support body 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 drive wires 58a and 58b.
The engagement guide body 59 is unitized as the curved cloth tension frame drive body 50.

As shown in FIG. 3, the bending cloth tension frame 8 is composed of a bending cloth support frame 61 and a pressing frame 62, and a cap 63 and the like placed and supported on the bending cloth support frame 61. The front surface of the curved cloth is pressed by the pressing 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 transfer piece 67. Then, at a plurality of locations on the outer peripheral surface of the rotating frame 55,
A mounting claw 66 having a roller 65 at the tip is provided, and the roller 65 is fitted into the mounting hole 68 (see FIG. 3) of the bending cloth support frame 61 of the bending cloth tension frame 8 to thereby make the bending cloth tension frame 8 Is 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 to the upper side in front view, and a pair of holding rollers are formed on the front and left sides of the frame holding member 56. 71 and 72 are rotatably supported. Then, the rotating frame 55 is provided between the holding rollers 71 and 72 and the bending cloth tension frame 8 is formed.
It is rotatably sandwiched so that the center of curvature of is the center of rotation. Further, as shown in FIG. 7, fixing pieces 75 for connecting to the fixing pieces 74 at the left and right ends of the engagement guide body 59 are bent and formed at the front and left ends of the frame holding member 56 on the front side. The frame holding member 56 and the engagement guide body 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, as shown in FIG.
As shown in FIG. 5, a connecting piece 82, which is a component of the connecting portion 81 whose tilt and vertical position can be adjusted, is bent and formed with respect to a drive guide body 80 described later. Further, as shown in FIGS. 5, 7, and 9, a position adjusting bolt 83 and a connecting bolt 84 for the bush 85 are respectively screwed into the lower center portion of the frame holding member 56.

As shown in FIGS. 5 and 6, the wire supporting member 57 has a wire supporting member 87 which is attached to the movable frame 11 by a screw 86 and is long in the X-axis direction. The wire hooking member 89 is supported so as to be capable of fine adjustment in the axial direction. At the left and right ends of the wire support member 87, elongated holes 90 are formed 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 a cutout hole so that the wire support 87 can be easily attached to and detached from the movable frame 11, as shown in FIGS. Therefore, it is possible to move in the front-back direction with respect to the movable frame 11,
After tightening the drive guide 80 and the frame holding member 56, 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 portion of the wire supporting 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 for preventing the engagement guide body 59, which will be described later, from slipping out in the front-rear direction (Y-axis direction) of the rail 95, as shown in FIGS. Is bent, and further, as shown in FIG.
Stopper wall 92 for preventing the slip-out in the X-axis direction
c is formed. As shown in FIG. 5, each wire hanging member 89 is formed in an L shape in a front view, and one end of each of the drive wires 58a and 58b is fixed to an inner end of the wire hanging member 89 by a screw 97, so that the wire supporting member 87 has right and left ends. 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 wire hook member 8 is provided.
9 and the other ends thereof intersect with each other in an X shape and are attached to the lower end of the outer peripheral surface of the rotating frame 55 by screws 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 to the left. When the wire support 57 moves to the right in FIG. 5, the drive wire 58b attached to the right end of the wire support 57 is pulled to the right, and the rotating frame 55 rotates to the right. It has become.

As shown in FIGS. 5 and 9, the engagement guide body 59 sandwiches the roller support body 100 fixed to the frame holding member 56 and the wire support body 57 from above and below, as described above. 1 rotatably supported by the roller receiver 100
It has a pair of rollers 95 and 96. As shown in FIGS. 5 and 9, the roller receiver 100 is arranged on the upper side of the rotating frame 55 and on the front side of the frame holding member 56 in order to avoid the arrangement portion of the drive wires 58a and 58b. Screws 77 are attached to the fixing pieces 75 of the frame holding member 56 at the left and right ends thereof.
A fixed piece 74 connected and fixed by the above is bent and formed on the rear side. The rollers 95 and 96 are, as shown in FIG.
One pair is arranged on each of the left and right sides of the roller receiving body 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 the lower side thereof is engaged. The roller 96 is in rolling contact with the lower surface of the wire support 57.

Therefore, since the wire support 57 is sandwiched by the upper and lower rollers 95 and 96, at least the engagement guide body 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.
Since the front and rear vertical walls 92a and 92b of the rail member 92 are engaged with each other so as not to slip out, the engagement guide body 59 is also prevented from slipping out in the front-rear direction (Y-axis direction). Further, the left and right stopper walls 92c of the rail member 92 of the wire support 57 are
This prevents the engagement guide body 59 from slipping out 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, the frame holding member 56 is fixed to the engagement guide body 59, and the engagement guide body 59 is engaged with the wire support body 57, These are integrated and can be unitized as the bending cloth tension frame driving body 50.

Next, a drive guide mechanism 51 for guiding the unitized drive 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 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 tightening screw 115 for adjusting the position and the vertical position adjusting bolt 83, which will be described later, and the guide rail plate 113.
So as to move in the Y-axis direction, the first Y-axis guide section 118 and the second Y-axis guide provided at the left and right ends in the X-axis direction of the drive guide body 80 with the rotation center of the rotation frame 55 interposed therebetween. Part 11
9 and 9.

As shown in FIG. 8, the first Y-axis guide portion 118 has the one end portion in the X-axis direction of the guide rail plate 113 so that the guide rail plate 113 is sandwiched in the vertical direction. A pair of guide rollers 122, 123 rotatably supported by the body 80 via a support block 121.
It consists of As shown in FIG. 9, the second Y-axis guide portion 119 is the other end portion of the guide rail plate 113 in the X-axis direction, and the guide rail plate 113 has the axial direction as the Y-axis direction.
And a guide shaft 125 whose both ends are fixed by screws 128 via blocks 124. As shown in FIG.
5, which is slidably fitted in the Y-axis direction and has the drive guide body 80.
And a guide block 127 fixed by screws 126.

As shown in FIG. 8, the drive guide 80 includes left and right connecting plates 130, 131 and a transfer plate 132 connecting the lower ends thereof integrally formed in a substantially U-shape that is open upward in a front view. Has been formed. Then, the connecting plate 13 on the right side
The guide block 127 is fixed to 0, and the support block 121 is fixed to the left connecting plate 131. Further, the left and right connecting plates 130 and 131 have the Y-axis moving frame 12
A connecting portion 145, which will be described later, for connecting with is fixed by a screw 144. The rail base 111, the guide rail plate 113, the first Y-axis guide portion 118, the second Y-axis guide portion 119, the drive guide body 80, and the connecting portion 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. 8 and 9. The drive guide body 80 includes the left and right connecting plates 1
The distance between the inner ends of 30, 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 piece 81 of the frame holding member 56 is connected to the connecting plate 130 of the drive guide body 80.
The position of the frame holding member 56 in the left-right direction is regulated when the frame holding member 56 is overlapped with 131. The connecting plates 130 and 131 of the drive guide body 80 are formed with screw-fitting position adjusting holes 133 for connecting the frame holding members 56, and these position adjusting holes 133 are used for position adjusting fastening screws. 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 of and the fastening screw 115 for position adjustment,
A connecting portion 135 is configured to enable fine adjustment of the frame holding member 56 with respect to the drive guide body 80 up and down and forward and backward. The connecting hole 137 of the position adjusting bolt 83 at the front center portion of the delivery plate 132 is a cutout hole so that the vertical position of the frame holding member 56 can be adjusted, as shown in FIG.

The frame holding member 56 of the curved cloth tension frame driving body 50 can be inserted into the driving guide body 80 from above. Further, the central portion of the frame holding member 56 is aligned with the central portion of the drive guide body 80, and the central portions of the drive guide body 80 and the frame holding member 56 are aligned by the vertical position adjusting bolts 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 body 80, and the horizontal position of the frame holding member 56 is positioned. Further, the frame holding member 5
6, the connecting portion 81 between the drive guide body 80 and the drive guide body 80 is temporarily fixed by the fastening screw 115, and the bending cloth tension frame drive body 50 and the drive guide mechanism 51 are connected.
And are assembled together.

Next, the drive guide 80 and the Y-axis moving frame 1
The connecting mechanism 140 for connecting the two is mainly shown in FIGS.
Description will be made with reference to FIGS. 9 and 11. This connecting 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 a hanging piece 142 that hangs down the rear side of the movable frame 11 at the rear end.
43, a connecting portion 145 fixed to the rear portion of the drive guide body 80 by a screw 144, and a connecting pin 14 as a connecting member for connecting the connecting portion 145 and the hanging piece 142.
6 and 6.

As shown in FIG. 11, a threaded hole 147 is formed in the hanging piece 142, and the connecting pin 146 is also provided with an elongated hole 14 for adjusting its vertical position.
8 is formed. And, the connecting 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 one on the side of the connecting portion with the hanging piece 142 and connecting with the drive guide body 80 side. The part side is formed in a tapered shape. As shown in FIG. 11, the connecting portion 145 on the side of the drive guide 80 has the connecting pin 14
It is composed of a connecting bush 150 into which 6 is fitted and a holding piece 151 that holds this connecting bush 150.
As shown in FIG. 11, the connecting bush 150 is formed with a long hole 152 elongated in the X-axis direction.
The dimension D in the axial direction is set to be the same as the diameter of the connecting pin 146. In addition, the holding piece 151 includes the screw 14
4, the left and right connecting plates 130, 1 of the drive guide body 80
It is fixed at 31.

Next, the work of attaching the bending cloth tension frame driving device of the present invention to the embroidery machine will be described. First, the Y-axis moving frame 1
2 is arranged on the upper side of the movable frame 11, and 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, when the Y-axis carriage 45 moves in the Y-axis direction, the Y-axis moving frame 12 also moves in the Y-axis direction. On the other hand, the movable frame 1
1 moves in the Y-axis direction when the Y-axis carriage 45 moves, and moves in the X-axis direction when the X-axis carriage 34 moves in the X-axis direction, but the Y-axis moving frame 12 is connected to the X-axis carriage 34. 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 bending cloth tensioning drive body 50 and the drive guide mechanism 51 are integrally assembled, the bending cloth tensioning drive body 50 and the drive guide mechanism 51 are arranged so that the rotation frame 55 of the bending cloth tensioning drive body 50 and the drive guide mechanism 51 is the sewing machine 3. Insert from the front so as to surround the bed portion 10 of. 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 the screw 112. Then, the music cloth tension frame 8 is attached to the rotary frame 55, and the sewing machine 3 of the music cloth tension frame 8 is attached.
After adjusting the height and inclination from the bed portion 10, the connecting portion 81 between 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 equal to that of the fastening screw 11.
Since the diameter is larger than the diameter of 5, the drive guide body 8
With respect to 0, the frame holding member 56 can be finely moved in the vertical direction and the front-back direction. Therefore, the frame holding member 56 is attached to the drive guide body 8
The position is adjusted by finely adjusting the vertical direction and the front-back direction with respect to 0, and is tightened and fixed by the fastening screw 115. As a result, not only the position of the upholstery frame 8 in the vertical direction and the front-rear direction but also the inclination of the upholstery frame 8 can be adjusted at the same time.

Next, a method for connecting the drive guide body 80 attached to the bed portion 10 of the sewing machine 3 and the Y-axis moving frame 12 attached to the Y-axis carriage 45 will be described. First, attach the connecting bracket 143 to the Y-axis moving frame 12 with the screw 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, and the connecting pin 146 with the screw 149.
It is fixed to the hanging piece 143 of the connecting bracket 143. Then, the Y-axis moving frame 12 and the drive guide body 80 have a degree of freedom in the vertical direction by the connecting pin 146, and are attached to the drive guide body 80 even if the Y-axis moving frame 12 long in the X-axis direction bends up and down. It hardly affects the bent cloth tension frame 8. In addition, the connecting pin 146 is provided in the long hole 15 of the connecting bush 150.
Since it is restricted in the Y-axis direction by 2, the drive guide body 80 and the bending cloth tension frame 8 follow the movement of the Y-axis moving frame 12 in the Y-axis direction.

In the curved cloth tension frame 8 attached in this way,
By moving the movable frame 11 in the X-axis direction, the wire support 5
If 7 moves to the left in FIG. 5, the wire support 57
The drive wire 58 attached to the left end portion of is pulled leftward, the turning frame 55 is turned leftward, and the bending cloth tension frame 8 is turned leftward. When the wire support 57 moves to the right in FIG. 5, the drive wires 58a and 58b attached to the right end of the wire support 57 are pulled to the right, and the rotating frame 55 rotates to the right. Then, the bending cloth tension frame 8 is rotated rightward. On the other hand, if the Y-axis carriage 45 moves in the Y-axis direction, the Y-axis moving frame 12 follows this and moves in the Y-axis direction. By the movement of the Y-axis moving frame 12 in the Y-axis direction, the drive guide body 80 connected by the connecting pin 146 moves in the Y-axis direction, and the frame holding member 5 connected to the drive guide body 80.
6, the rotating frame 55 and the bending cloth tension frame 8 move in the Y-axis direction.

When the drive guide 80 is moved in the Y-axis direction, the rollers 122,
The guide rail plate 113 is sandwiched by 123,
It rolls on the guide rail plate 113, and in the second Y-axis guide portion 119, the drive guide body 80 is guided in the Y-axis direction by the guide shaft 125 via the guide block 127. The first Y-axis guide portion 118 and the second Y-axis guide portion 119 are arranged on both sides of the bed portion 10 of the sewing machine 3 with the bed portion 10 interposed therebetween, and have a structure in which the drive guide body 80 is supported on both sides of the bed portion 10. Therefore, the movement of the drive guide body 80 is stable, and thus the movement of the bending cloth tension 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 tension frame 8 are improved.

Further, when embroidering a flat cloth, a raw fabric frame having a size that can be mounted inside the movable frame 11 is attached to the movable frame 11, and the flat fabric is attached to 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 in the X-axis and Y-axis directions by the same amount. At this time, the Y-axis moving frame 12 used for moving the bending cloth tension frame 8 in the Y-axis direction is the X-axis frame portion 11 a of the movable frame 11.
It is placed on the upper side of the so that there is no problem even when a flat embroidery frame or the like is attached. Therefore, since the Y-axis moving frame 12 may be attached to the Y-axis carriage 45, the flat embroidery frame and the curved cloth tension frame 8 are simultaneously attached to the movable frame 11 to form a flat cloth and a curved cloth. You can embroider at the same time. Also,
As described above, the Y-axis moving frame 12 does not need to be removed even when embroidery is applied to a flat cloth after it is once attached, and the frame attachment / detachment time can be shortened. Furthermore,
Even when embroidery is performed on a flat cloth, the Y-axis moving frame 12 functions as a reinforcing member for the movable frame 11.

The drive guide mechanism 51 is not limited to the structure in which the guide shaft 125 and the guide block 127 are used in the second Y-axis guide portion 119 as in the above-described embodiment, but as shown in FIG. Also in the guide portion 119, the first Y-axis guide portion 1
Similar to 18, the guide rail plate 113 may be sandwiched by the upper and lower guide rollers 122 and 123.
In this case, in order to prevent the curved cloth tension frame 8 from tilting in the front-back direction,
It is desirable that the guide rail plate 113 is supported at three points by at least three rollers 122 and 123.

Also, in the above embodiment, the engagement guide body 59.
Is composed of the roller receiver 100 and the rollers 95 and 96, but is not limited to this, and any structure that can prevent the wire support 57 from slipping out in the front-rear direction and the up-down direction is simply a slide member. Of course, it may be configured from. Further, with respect to the drive guide body 80, the frame holding member 56
In order to enable position adjustment in the front-back direction and the up-down direction, the diameter of the hole into which the screw 115 is fitted is set to a large diameter in the above embodiment, but this hole is not limited to a round hole, It may be a long hole. Further, in the above embodiment, the connecting pin 146 connecting the Y-axis moving frame 12 and the drive guide body 80 is
The side of the drive guide may be fixed, and the side of the Y-axis moving frame may be vertically movable. Further, in the connecting portion between the frame holding member 56 and the drive guide body 80, in the above-described embodiment, the adjustment hole 133 having a larger diameter than the fastening screw 115 is formed on the drive guide body side, but the adjustment hole 133 is formed on the holding member side. It may be formed, or may be formed on at least one of them. In addition, the guide rollers 11b, 11 of the movable frame 11 of the above embodiment
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-mentioned embodiment, but can be applied to a single-head type embroidery machine. In this case, the Y-axis moving frame is replaced by a plurality of bending cloth tension frames 8 in the above embodiment.
Is formed long in order to move in synchronization with the Y-axis direction at the same time, but this is not necessary in a single-head embroidery machine, and the Y-axis moving frame moves in synchronization with the movable frame 11 only in the Y-axis direction. To be engaged.

Further, in the above embodiment, the frame holder 60 is connected to the Y-axis moving frame 12 via the drive guide 80, but the present invention is not limited to this, and the frame holder 60 is directly connected to the Y-axis moving frame 12.
It may be configured to be connected to. Even in this case, similarly to the above, the presence of the connecting pin 146 causes the Y-axis moving frame 12 to move.
The connection work between the frame holder 60 and the frame holder 60 can be easily performed.
The shaft moving frame 12 and the frame holder 60 have a degree of freedom in the vertical direction, and even if the Y-axis moving frame 12 that is long in the X-axis direction bends in the vertical direction, the height position of the bending cloth tension frame 8 changes. Can be prevented.

[0041]

As described above, according to the curved cloth tension frame driving device for a sewing machine of the first aspect, the connection between the drive guide body and the Y-axis moving frame is movable in the vertical direction and the Y-axis is movable. The Y-axis moving frame and the drive guide body can be connected easily because the connecting member is fitted in the connecting portion immovably in the direction. Even if the Y-axis moving frame, which is long in the X-axis direction, bends up and down due to the member having a vertical degree of freedom, it does not easily affect the bending cloth tension frame attached to the drive guide body. Moreover, since the Y-axis moving frame and the drive guide body have a degree of freedom in the vertical direction by the connecting member, the load applied from the Y-axis moving frame to the drive guide body side can be reduced.

According to the curved cloth tension frame driving device for a sewing machine of the second aspect, the frame holding body is directly coupled without being coupled via the drive guide body as in the first aspect. Also in this case, similarly to the above-mentioned claim 1, due to the presence of the connecting member, the connecting work between the Y-axis moving frame and the frame holder can be easily performed, and the Y-axis moving frame and the frame holder are Even if the Y-axis moving frame, which has a degree of freedom in the up-down direction and is long in the X-axis direction, is bent up and down, it is unlikely to affect the bending cloth tension frame.

[Brief description of drawings]

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

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

FIG. 3 is a perspective view showing a Y-axis moving frame, a bending cloth tension frame driving body, and the like.

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

FIG. 5 is a front view showing a bending cloth tension 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 a side enlarged cross-sectional view showing a connected state of the frame holding member, the drive guide body, and the Y-axis moving frame.

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

FIG. 11 is an exploded perspective view showing a connected state of the connecting bracket of the Y-axis moving frame and the drive guide body.

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

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

[Explanation of symbols]

 3 Sewing machine 8 Curved cloth tension 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 driver 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 Connection portion 83 Position adjustment bolt 92 Rail member 95, 96 Roller 100 Roller receiver 111 Rail base 113 Guide rail plate 115 Fastening screw 118 First Y-axis guide portion 119 Second Y-axis guide portion 121 Support block 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

Claims (2)

[Claims] 1. A movable frame movable in the X-axis direction and a Y-axis movable frame movable in the Y-axis direction are provided, and the linear movement of the movable frame in the X-axis direction is caused by the curvature of the bending cloth tension frame. It is converted into the rotational movement of the bending cloth tension frame with the center as the rotation center, and Y of the Y-axis movement frame
In a bending cloth tension frame drive device of a sewing machine that sewes on a cloth stretched in a curved shape on a bending cloth tension frame by an axial movement, the bending cloth tension frame can be rotated about a curvature center of the bending cloth tension frame. Rotation frame for mounting the bent cloth tension frame, a frame holder that rotatably holds the rotation frame, and a drive guide that is fixed to the frame holder and that guides the frame holder in the Y-axis direction. A body and a connecting member that detachably connects the drive guide body and the Y-axis moving frame. One end of the connecting member is fixed to one of the drive guide body and the Y-axis moving frame. The sewing machine is characterized in that the other end is fitted to a connecting portion provided on the other of the drive guide body and the Y-axis moving frame so as to be vertically movable but immovable in the Y-axis direction. Curved cloth tension frame drive device. 2. A movable frame movable in the X-axis direction and a Y-axis movable frame movable in the Y-axis direction are provided, and the linear movement of the movable frame in the X-axis direction is corrected by the curvature of the bending cloth tension frame. It is converted into the rotational movement of the bending cloth tension frame with the center as the rotation center, and Y of the Y-axis movement frame
In a bending cloth tension frame drive device of a sewing machine that sewes on a cloth stretched in a curved shape on a bending cloth tension frame by an axial movement, the bending cloth tension frame can be rotated about a curvature center of the bending cloth tension frame. Rotating frame for attaching the bent cloth tension frame, a frame holder that rotatably holds the rotating frame, and a connecting member that detachably connects the frame holder and the Y-axis moving frame. The connecting member has one end fixed to one of the frame holder and the Y-axis moving frame, and the other end to a connecting portion provided on the other of the frame holder and the Y-axis moving frame. A curved cloth tension frame driving device for a sewing machine, which is fitted so as to be movable in the vertical direction and immovable in the Y-axis direction.