JPH0153384B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention particularly relates to a device for transporting a base fabric having a curved shape, such as a base fabric already sewn as a hat or clothing, for embroidery.

(Prior Art) Conventionally, a base fabric having a curved surface was stretched flat and transferred horizontally to perform embroidery.

(Problems to be Solved by the Invention) Therefore, there have been problems such as the design and area of the embroidery stitch being restricted, the sewn pattern being deformed, and becoming flat.

SUMMARY OF THE INVENTION An object of the present invention is to provide a base fabric transfer device for performing embroidery while maintaining the curved shape of the base fabric.

(Means for Solving the Problems) The present invention is arranged so as to be rotatable about an axis that is parallel to the Y-axis of the yarn and located below the needle drop. A rotating frame curved in an arc around the axis is attached to the driven ring, and the sewing area of the base fabric is connected to the rotating frame along the axis. A presser frame for gripping the drive ring by curving it in an arc shape at the center is juxtaposed, and the drive ring and a vertical feed plate placed horizontally so as to be able to control unilateral movement in the Y-axis direction,
In addition to being linked to enable co-moving displacement in the Y-axis direction,
The vertical feeding plate and the horizontal feeding plate, which is horizontally placed so that its movement can be controlled unilaterally in the X-axis direction and can be displaced in the Y-axis direction, are connected to The driving ring and the interlocking member which are connected to each other so as to be able to move together and are further connected to the cross-feeding plate and are suspended horizontally along the X-axis direction are moved in an arc around the axis in the sewing area. The gist of the present invention is a transfer device for base fabric in a embroidery sewing machine which is connected via a connection link to transfer the base fabric.

[Function] A drive ring, which is arranged below the needle drop and rotatable about an axis parallel to the Y-axis, is connected to the drive ring so as to be movable in the Y-axis direction. a horizontally moving plate that is controlled to move in the Y-axis direction by a vertically moving plate, and at the same time is repeatedly struck with respect to the vertically moving plate so as to be able to move in the X-axis direction and not to move in the Y-axis direction; An interlocking member connected to the traversing plate and connected to the drive ring via a connection link is controlled to move in the X-axis direction to control rotation of the drive ring about the axis, and the drive ring is controlled to rotate about the axis. The embroidery area of the base fabric, which is held in an arcuate state between the rotation frame attached to the rotation frame and the presser frame placed in parallel on the rotation frame, is rotated along the Y axis during embroidery. direction, and at the same time, it is moved in an arc around the axis.

(Example) Next, an example of the present invention will be explained with reference to the drawings. Sewing machine heads 2 to 2 are respectively connected in front of each sewing machine head 1 and are formed with insertion tubes that can be inserted into the base fabric. 3 is a sewing machine head that can be horizontally moved vertically and horizontally with respect to the shield side of each insertion tube 2. This is a vertical feed plate placed horizontally so as to pass through each sewing machine head 1.

5 is a vertical feed motor, and each sewing machine head 1
It corresponds to the pattern to be embroidered in order to control the movement of the vertical feed plate 3 in the Y-axis direction (vertical direction) of the XY-axis plane orthogonal coordinate system, which is assumed to have the origin at the needle drops H to H on the base fabric through which the sewing needle penetrates. Prior to the vertical movement of the sewing needle, the rotation is controlled in forward and reverse directions by a signal transmitted based on the Y data of the storage device that stores the X and Y data.

6 is a vertical feed shaft that is directly connected to the motor shaft of the vertical feed motor 5 and is movable in the horizontal direction, and 7 to 7 are vertical feed shafts that are connected orthogonally to the vertical feed shaft 6 and can each rotate in a circular manner. Belts 8, 8 are connected to each vertical conveying belt 7 in order to transmit the inching-like circulating motion of each vertical conveying belt 7 to the vertical conveying plate 3, and are connected near both ends and the center of the vertical conveying plate 3. The vertical feed plate 3 is horizontally displaced in the Y-axis direction via each vertical feed belt 7 and each vertical connection plate 8 by forward and reverse rotation of the vertical feed motor 5. .

9 is a horizontal feed motor whose rotation is controlled in forward and reverse directions in synchronization with the vertical feed motor 5 by a signal transmitted based on the X data of the storage device; 10 is a horizontal feed motor 9;
11 is a transverse feed shaft that is directly connected to the motor shaft and is horizontally suspended so as to be rotatable in the vertical direction; 11 and 11 are transverse feed belts that can each rotate relative to the transverse feed shaft 10 and are connected orthogonally to each other; It is connected to the feed belt 11 so that it can be moved together in the X-axis direction and independently moved in the Y-axis direction, and it can be moved together in the Y-axis direction and independently moved in the X-axis direction with respect to the vertical feed plate 3. Transverse feed plates 13 are displaceably connected and bearing members 14 are mounted on the vertical feed plate 3 and arranged at distances in the longitudinal direction.
is an interlocking rod that is slidably inserted through the tip of each bearing member 13 and is horizontally suspended above the front of the vertical feed plate 3 along the are connected together so that they can move together, and are controlled to move in the X-axis direction together with the horizontal feed plate 12 in synchronization with the movement of the vertical feed plate 3 in the Y-axis direction by forward and reverse rotation of the horizontal feed motor 9.

Reference numeral 15 denotes a holder attached to the lower side of the vertical feed plate 3 so as to face each needle drop H, and two pairs of guide rollers 1 are installed near the left and right ends near the upper end of the holder 15.
6 and 16 are rotatably supported.

Reference numeral 17 denotes an annular drive ring that is vertically rotatably supported on the front surface of the holder 15, and a horizontal drive ring that is parallel to the Y axis and directly below the needle drop H between the guide rollers 16 of the holder 15. The interlocking rod 14 and the interlocking rod 14 are connected to the connecting link 19, which is slidably sandwiched around the axis a of the
When the interlocking rod 14 moves in the X-axis direction, the drive ring 17 is guided by the guide roller 16 and rotates forward and backward about the axis a. In addition,
In this example, the rotation range of this drive ring 17 is set to approximately 120 degrees (-60 degrees to +60 degrees).

20 is the stitching area of the base fabric K to be stitched.
A substantially perforated semi-cylindrical rotating frame extending forward and co-rotatably connected to the drive ring 17 for gripping K1 in an arcuate shape and transferring it in an arc,
An appropriate number of locks are provided in the arcuately curved base end 20a to engage the rollers 21 to 21 rotatably supported by the drive ring 17 and lock the rotating frame 20 to the drive ring 17. While the holes 22 to 22 are provided through the holes 22 to 22, a holding part 20b having a rectangular frame curved into an arc shape is connected in front of the base end part 20a so as to surround the needle drop H. 14 in the X-axis direction, the drive ring 17 is rotated in the forward and reverse directions about the axis a.

Reference numeral 23 denotes a pair of left and right rods that are supported in a cantilever manner via metal fittings 24, 24 on both lower ends of the base end 20a of the rotating frame 20 and extend forward in parallel; 25 is a base; It is a presser frame that is arranged parallel to the rotating frame 20 so as to be able to rotate upwardly in order to releasably hold the fabric K between the rotating frame 20, and is connected to one of the rods 23 via a hinge 26. It is pivotally attached to the other rod 23 and detachably hooked to the other rod 23 via a hook 27, and the stitching area K1 of the base fabric K is aligned with the axis a between the rotation frame 20 and the presser frame 25 It is held in a state where it is expanded into a circular arc surface centered on the axis a.
At the same time, the transfer is controlled in the circumferential direction of the circular arc surface centered on the axis a.

Next, a method of transporting the base fabric K for stitching using the above-described device will be described.

First, move the sewing area K1 of the base fabric K using the rotating frame 20.
X of the storage device which stores the design which is set in the state where it is clamped between the presser frame 25 and spread out in a circular arc shape, and stabs the vertical feed motor 5 and the horizontal feed motor 9;
When rotationally driven synchronously based on the Y data, the stitching and sewing area K1 moves in the direction of the axis a, which is the arc axis of the stitching and sewing area K1 held in an arcuate shape by moving the vertical feed plate 3 in the Y-axis direction. At the same time, the movement of the interlocking rod 14 in the X-axis direction moves the interlocking rod 14 in the circumferential direction of the arcuate surface centered on the axis a, and the stitching area K1 is moved in the circumferential direction of the arcuate surface centered on the axis a. The transfer is controlled prior to each sewing operation by a combined operation of the transfer operation to and the transfer operation in the circumferential direction of the circular arc surface,
It is possible to sew a embroidery pattern corresponding to the X and Y data in the embroidery area K1.

However, the connecting link 19 connected to the interlocking rod 14
The amount of rotation of the drive ring 17 with respect to the amount of movement of the interlocking rod 14 differs depending on the position of the connection fulcrum b that connects the drive ring 17 with the interlock rod 14. Since the amount of movement of the base fabric K for the same amount of movement of the rod 14 is different (maximum at the center of the embroidery area K1 and gradually decreases toward both ends), the interlocking rod 14 is moved at each position of the connecting fulcrum b.
A correction data table is created in which the corrected rotation angle of the drive ring 17 is calculated for each movement amount, that is, the appropriate arc transfer amount of the base fabric K, and this data table is used to control the rotation of the lateral feed motor a. It is stored in the storage device as X data.

Next, the operation and effects of the embodiment having the above configuration will be explained.

Now, in this example, the stitching area K1 of the base fabric K is
A horizontal axis a that is parallel to the Y-axis of the XY-axis plane orthogonal coordinate system with needle drop H as the origin and located directly below needle drop H.
A rotating frame 20 and a presser frame 25, which are provided for gripping in a substantially arc-shaped curved state about the center, move the vertical feed plate 3, which is supported so as to be rotatable about the horizontal axis a, in the Y-axis direction. It is horizontally placed so that it cannot be displaced in the X-axis direction, and it can be unilaterally controlled in the X-axis direction to rotate the rotation frame 20 and the presser frame 25 in the forward and reverse directions. A horizontally disposed horizontally displacing plate 12 that can be displaced in the axial direction is connected to the vertically displacing plate 3 so that it cannot be moved in the X-axis direction but can be moved in the Y-axis direction.

Therefore, it is possible to accurately perform embroidery sewing on the base fabric K having a curved surface while maintaining its three-dimensional shape without deforming the curved surface shape. It has the advantage of making the embroidery pattern more accurate and three-dimensional by avoiding flattening of the sewing area, and increasing the appearance and commercial value of the embroidered fabric.

(Effects of the Invention) Since the present invention is configured as described above, the three-dimensional effect of the embroidery pattern is enhanced by accurately controlling the transfer of the base fabric so as to adapt it to the curved shape of the base fabric, and
This has the effect of not only preventing deformation and flattening of the embroidery pattern name but also simplifying the mechanism for controlling the transfer of the embroidery area of the base fabric.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a side view of the main parts, FIG. 2 is a schematic plan view of the embroidery sewing machine, FIG. 3 is a plan view of the main parts, and FIG. 4 is a side view of the main parts. is the first
It is a XX arrow view of a figure. 3... Vertical feed plate, 12... Horizontal feed plate, H... Needle drop, K... Base fabric, K1... Stitching area, a...
Axis line.

Claims (1)

[Claims] 1 Cartesian coordinate on the XY-axis plane with the needle drop as the origin A rotary frame curved in an arc shape is attached, and a rotating frame is provided on the rotary frame for gripping the embroidery area of the base fabric by curving it in an arc shape around the axis between the rotary frame and the rotary frame. The presser frames are juxtaposed, and the drive ring and a vertical feed plate placed horizontally so as to be able to control unilateral movement in the Y-axis direction are linked so as to be movable together in the Y-axis direction, and the vertical feed plate and a horizontally placed transverse plate that can be controlled to move unilaterally in the X-axis direction and displaceable in the Y-axis direction.
The driving ring is connected to an interlocking member that cannot be moved together in the axial direction but can be moved together in the Y-axis direction, and is further connected to the transverse feed plate and horizontally suspended along the X-axis direction. A transfer device for base fabric in a stitch sewing machine, characterized in that the stitch area is connected via a connecting link to move the stitch area in an arc around the axis.