JPS6347819B2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) This invention provides a multi-head embroidery sewing machine that includes:
The present invention relates to a transfer device for controlling the transfer of cloth to be stitched in a horizontal direction in accordance with the pattern to be stitched.

(Prior Art) As a conventional technology, there is, for example, Japanese Unexamined Patent Publication No. 57-29654.

(Problems to be Solved by the Invention) The transfer device of a conventional multi-head embroidery sewing machine transfers a piece of embroidered fabric cut into a rectangular shape to a transfer frame on which the embroidered fabric is stretched and supported. Since the transfer was controlled through the needle, there was a problem that it could not be applied to cylindrical, endlessly sewn fabrics to be embroidered.

SUMMARY OF THE INVENTION An object of the present invention is to provide a transfer device for a embroidered fabric in a multi-head embroidery sewing machine that can accurately sew a embroidered pattern even on a cylindrical embroidered fabric.

(Means for Solving the Problems) The present invention includes a vertical feed plate on which a plurality of pairs of nip rollers are mounted spaced apart from each other in order to nip the fabric to be embroidered on both sides of the needle drop. The nip roller is installed so as to be controllable in its movement in the axial direction, and the horizontal feed plate is installed in the longitudinal direction so as to be controllable in movement in a direction perpendicular to the axial direction in order to transmit forward and reverse rotational motion to the nip roller. The gist of the present invention is to provide a transfer device that is connected to the feed plate so as to be able to move together with the feed plate in the axial direction and to be independently displaceable in a direction perpendicular to the axial direction.

(Function) The device of the present invention nips the fabric to be stitched with a pair of nip rollers installed oppositely on both sides of the needle drop, and simultaneously moves the nip rollers in the axial direction and rotates them to create a pattern on the fabric to be stitched. The structure is such that the transfer is controlled in any horizontal direction corresponding to .

(Embodiment) Next, an embodiment of the present invention will be described with reference to the drawings. In the drawing, 1 to 1 indicate a plurality of needles arranged at predetermined intervals in the lateral direction in a multi-head type embroidery sewing machine M. Sewing machine heads 2 to 2 are respectively connected in front of each sewing machine head 1 and are formed to be inserted into a cylindrical piece of fabric to be embroidered; 3 is an insertion cylinder extending vertically and horizontally from above each insertion cylinder 2; It is a vertical feed plate which is horizontally movable and placed horizontally so as to pass through each sewing machine head 1, and a guide groove 4a having a U-shaped cross section is formed along the longitudinal direction in a guide rail 4 attached to the lower surface near the front end of the plate. It is recessed.

5 is a vertical feed motor, and each sewing machine head 1
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 fabric through which the sewing needle penetrates, it corresponds to the pattern to be stitched. Prior to the vertical movement of the sewing needle, the sewing needle is controlled to rotate 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 to 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; A horizontal feed plate connected to the feed belt 11 so as to be movable together, and connected to the vertical feed plate 3 so as to be movable together in the Y-axis direction and independently displaceable in the X-axis direction; A pair of left and right rollers 14, 14 are provided at the rear end of the back surface (end on the side of the vertical feed plate 3) in a planar T-shape and are fitted in the guide grooves 4a of the vertical feed plate 3 so as to be able to roll and slide, respectively. A horizontal connecting plate 13 rotatably supported on both left and right ends of the rear end is attached to the rear end of the horizontal connecting plate 13, and parallel connecting plates 13 are attached to the rear end of the upper surface thereof along the front end of the vertical feed plate 3 so as to pass through each sewing machine head 1. The right end of the rack gear 15 (as shown in the figure) is connected to the rack gear 15, which is horizontally suspended in the shape of a horizontal plane. Y
Movement is controlled in the axial direction together with the vertical feed plate 3.

Reference numerals 16 to 16 refer to nip mechanisms N mounted on the vertical feed plate 3 facing each sewing machine head 1, and in order to nip and stretch the fabric to be stitched on both sides of the needle drop H, respectively. A plurality of pairs of nip rollers are each horizontally supported in a rotatable manner at the front end and are arranged in parallel on both sides of each insertion tube 2, and are each supported in a cantilever manner on a support plate 3a attached to the front end surface of the vertical feed plate 3. A drive roller 16a is rotatably supported horizontally in the Y-axis direction via a support shaft 17.
and a horizontal support rotatable in the Y-axis direction in a cantilevered manner via a holder 19 that is supported so as to be rotatable upward near the front end of the vertical feed plate 3 and is always urged downward by a spring 18. Pinch rollers 16b are arranged in parallel to the upper side of the drive roller 16a so as to be able to pinch and release the stitched fabric.Furthermore, a rack gear 15 is provided at the base end of each drive roller 16a. A pinion 20 that meshes with the lateral feed plate 12 and is driven to rotate in forward and reverse directions as the lateral feed plate 12 moves in the X-axis direction is fitted therein, and the movement of the lateral feed plate 12 in the The rotational movement of each pair of nip rollers 16 is converted to
is transferred in the X-axis direction by the rotation of The sewing needle is intermittently controlled to be moved in the direction that is the sum of the amount of displacement and the amount of displacement prior to each vertical movement of the sewing needle.

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

In this example, in order to nip the fabric to be stitched on both sides of the needle drop H, the needles are placed opposite to each sewing machine head 1, and are centered in the Y-axis direction of the XY-axis plane orthogonal coordinate system with the needle drop H as the origin. A vertical feed plate 3 having a plurality of pairs of nip rollers 16 fitted in a spaced manner is installed so as to be able to control movement in the Y-axis direction, and in order to transmit forward and reverse rotational motion to each pair of nip rollers 16. A horizontal feed plate 12 installed so as to be controllable in its movement in the X-axis direction is connected to the vertical feed plate 3 so as to be movable together in the Y-axis direction and independently displaceable in the X-axis direction.

For this reason, the cloth to be embroidered is
In the extended state, both nip rollers 16 are moved in the axial direction and rotated at the same time to increase the puncture distance by X,
It is possible to stably control the transfer in the Y-axis direction, and when stitching a cylindrical cloth to be embroidered, such as the sleeve, body, or torso of sewn clothing, the cloth to be embroidered can be moved in the direction of the cylinder axis and It has the feature that it is possible to accurately sew the embroidery pattern onto this type of fabric by accurately transferring the material in the circumferential direction of the cylinder.

Note that the piece-like embroidered cloth that is applied to the conventional transfer frame type transfer means can be applied to the transfer means of this example, and the above transfer frame has a large ratio of length to width. The transfer means of this example can also be applied to strip-shaped pieces of cloth to be embroidered that cannot be transferred.

(Effects of the Invention) That is, the present invention provides a vertical feed plate on which a plurality of pairs of nip rollers are spaced apart from each other and are placed opposite each other in each sewing machine head in order to nip the fabric to be embroidered on both sides of the needle drop. A horizontal feed plate is installed to allow controllable movement in the axial direction, and a horizontal feed plate is installed to allow controllable movement in a direction perpendicular to the axial direction in order to transmit forward and reverse rotational motion to the nip roller. On the other hand, by linking them so that they can be moved together in the axial direction and independently displaceable in the direction perpendicular to the axial direction, the transfer of the cylindrical fabric to be embroidered can be precisely controlled and the pattern to be embroidered can be created. It has the effect of accurately sewing the fabric to be embroidered.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention, and FIG. 1 is a plan view of a multi-head embroidery sewing machine, and FIG.
B is an enlarged plan view and an enlarged vertical sectional view of the W part in Fig. 1, Fig. 3 A and B are an enlarged plan view and an enlarged longitudinal sectional view of the X part in Fig. 1, and Fig. 4 is an enlarged longitudinal sectional view of the W part in Fig. 1. FIG. 5 is an enlarged front view, and FIG. 6 is a sectional view taken along the Z-Z line in FIG. 4. 1...Sewing machine head, 3...Vertical feed plate, 12...
...Horizontal feed plate, 16...Nitsupurora, H...Needle drop.

Claims (1)

[Claims] 1. In order to nip the fabric to be embroidered on both sides of the needle drop, a vertical feed plate, on which a plurality of pairs of nip rollers placed opposite to each other are installed in a spaced manner, is installed in each sewing machine head so as to be able to control the movement of the nip rollers in the axial direction. At the same time, in order to transmit forward and reverse rotational motion to the nip roller, a horizontal feed plate installed so as to be controllable in its movement in a direction perpendicular to the axial direction is co-moved in the axial direction with respect to the vertical feed plate. 1. A transfer device for a embroidered fabric in a multi-head embroidery sewing machine, characterized in that the device is connected to enable independent displacement in a direction orthogonal to the axial direction.