JPH0543115Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an embroidery frame drive device for a sewing machine, and more particularly to a retractable embroidery frame drive device for a cylindrical bed type sewing machine.

(Problem to be solved by the invention) The present invention enables automatic embroidery work using a general household sewing machine equipped with a lockstitch seam forming mechanism. This is to solve the problem that the embroidery frame attachment part which is driven becomes a hindrance to work when the embroidery frame is not driven, that is, during general sewing work.

(Means for Solving the Problems) The present invention uses an embroidery frame drive device provided on a base disposed below the cylindrical bed to move the embroidery frame mounting portion disposed at the rear of the cylindrical bed in the X direction and The embroidery frame mounting portion is driven in the Y direction perpendicular to the X, and the embroidery frame mounting portion is configured to be able to handle cloth smoothly without getting in the way during general sewing work when the embroidery frame is not driven. The embroidery frame mounting portion can be turned over so that the distance between the embroidery frame and the cylindrical bed can be increased.

(Function) In a sewing machine equipped with an embroidery function and a general sewing function, the present invention provides an X direction parallel to the longitudinal direction of the cylindrical bed and a Y direction perpendicular to the X direction at the rear of the cylindrical bed of the sewing machine frame. An embroidery frame attachment part provided movably in the direction is formed by a lower base part and an upper attachment part,
The mounting part is rotatably supported on the base part about a shaft part, and a hook part formed at an end of an operating lever pivoted inside the mounting part can be locked to a locking part of the base part. When sewing embroidery, the hook is locked to the locking part and the attachment part is fastened to the base, and when sewing non-embroidery, the attachment part is rotated so as to fall over, and the attachment part is separated from the cylindrical bed. It is characterized by:

(Embodiment) To describe the structure of the present invention in terms of an embodiment, 1 is an arm frame of a sewing machine frame, and a drive shaft (not shown) is rotatably supported inside the arm frame. A needle bar mechanism having a vertically slidable needle bar (not shown) is supported inside.

Reference numeral 3 designates a cylindrical bed of the sewing machine frame, in which a needle thread ring catcher (not shown) and a fabric feeder (not shown) having feed teeth are installed, and the rotation of the drive shaft causes the A lockstitch stitch is formed by the cooperation of the needle attached to the tip of the needle bar and the thread ring catching device, and the cloth to be sewn moves forward or backward in time with the stitch forming movement by the movement of the feed dog. I am forced to do it.

Reference numeral 4 denotes an embroidery frame drive unit frame that incorporates an embroidery frame drive unit, and the embroidery frame drive unit frame is formed with an elongated opening 5 that is parallel to the longitudinal direction of the cylindrical bed. An embroidery frame attaching part 6 is provided at the end of the rod part (not shown) that protrudes outward through the opening 5. The embroidery frame mounting section is composed of a lower base 7 and a mounting section 9 pivotally mounted above the base by a shaft section 8. A magnet (not shown) and a positioning pin 10 are mounted on the upper surface of the mounting section. , 10 are provided.

Reference numeral 11 designates an operating lever, which is rotatably pivoted 12 in the mounting portion 9, with an operating portion 13 at one end protruding outward from an opening 14 of the mounting portion 9, and a hook portion 15 at the other end. Since the spring 16 is formed, it is biased clockwise in FIG. 3 to lock the hook portion 15 to the locking portion 17 of the base portion 7. Reference numeral 18 denotes an embroidery frame, and a mounting portion 19 is fixed to one end.

Since the present invention has the above-described structure, positioning pins 10 and 1 are provided on the upper surface of the embroidery frame mounting portion 9.
0, position the mounting part 19 of the embroidery frame 18, fix it with a magnet, and set the fabric in the embroidery frame 18 to be ready for embroidery. The embroidery frame 18 can automatically perform embroidery because the embroidery frame mounting portion 6 is controlled to move in the X and Y directions by the embroidery frame drive mechanism to perform desired embroidery movements.

Next, if you want to remove the embroidery frame 18 and use the sewing machine for normal sewing, move the embroidery frame attachment part 6 with the embroidery frame attached to the limit position in the X and Y directions of the embroidery frame drive range, that is, as shown in FIG. Closest to the arm rising part along the longitudinal direction of the cylindrical bed 3 (X
direction) and closest to the cylindrical bed part 3 (Y direction).
direction) position, and at that position embroidery frame 1.
8 and then remove the operating lever 11 from the spring 16.
By lowering the operation lever 11 downwardly against the action of
As shown by the dotted line in Fig. 2, the attachment part 9 can be tilted backwards when sewing with normal sewing.
can be avoided from getting in the way.

(Effects) When performing normal stitching with conventional sewing machines capable of embroidery, the embroidery frame attachment part got in the way of the sewing work, especially on machines equipped with a cylindrical bed, causing trouble in handling the fabric, but with this invention. Since the embroidery frame attachment part can be separated from the bed machine frame when the embroidery frame is not in use, the work can be carried out smoothly without interfering with normal sewing, which is highly effective in practice.

[Brief explanation of drawings]

The drawings show the embodiments of the present invention, and the drawings show the first embodiment.
The figure is an external perspective view of a sewing machine equipped with the present invention.
The figure is a side view of a sewing machine equipped with the present invention, Figure 3 is an enlarged view of the main parts of the present invention, 6 is an embroidery frame attachment part,
7 is a base, 8 is a shaft, 9 is a mounting portion, 11 is an operating lever, 12 is a pivot portion, 15 is a hook portion, 16 is a spring, and 17 is a locking portion.

Claims (1)

[Scope of utility model registration request] A needle bar mechanism supported by the arm machine frame of the sewing machine,
A needle thread ring catching device and a cloth feeding device supported on the bed frame of the sewing machine, a device for driving the embroidery frame in the X direction, a device for driving the embroidery frame in the Y direction perpendicular to the X direction, and and an embroidery frame mounting part driven by a Y-direction drive device, in which the embroidery frame mounting part is movably mounted at the rear of the cylindrical bed; The embroidery frame mounting section is composed of a base and a mounting section that is rotatable with respect to the base, and an embroidery frame positioning section is provided on the top surface of the mounting section, and an operation section at one end is provided inside the mounting section. A sewing machine, characterized in that an operating lever is pivotably mounted, one end of which faces the outside, and a hook part formed at the other end, and a locking part to which the hook part of the operating lever is locked is provided at the base. Embroidery hoop drive device.