JPH064094U - Sewing machine with embroidery frame device - Google Patents

Abstract

(57) [Summary] [Objective] The embroidery frame set 58 for holding the work cloth 62 is formed into a substantially circular shape, and an embroidery outer frame for rotatably storing the embroidery frame set 58 and an index of 60 rotation angles are provided. Frame 6
By enabling the work cloth 62 to be rotated and positioned while being held by the embroidery frame 58 in 0, it is possible to provide a sewing machine having an embroidery frame device that can embroider characters in an arc shape easily and beautifully. Has an aim. In an embroidery sewing machine capable of embroidering, an embroidery frame 58 for fixing cloth is formed into a substantially circular shape, and an embroidery outer frame 60 for rotatably storing the embroidery frame 58 is arranged outside the embroidery frame 58. An index indicating an angle is provided on at least one of 60 and the embroidery frame 58.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a sewing machine provided with an embroidery frame device, and more particularly to an embroidery frame device that can easily arrange embroidery characters at equal intervals on the circumference.

[0002]

[Prior art]

 Conventionally, when an attempt is made to embroider a character, a design, etc., as shown in FIG. 2, it is composed of a small embroidery frame 81 and a large embroidery frame 82 having an inner shape slightly larger than the outer shape of the small embroidery frame 81. The work cloth 84 is held by the embroidery frame 83, and the embroidery frame 83 is attached to the position-changeable embroidery frame holding portion 86 provided on the left side of the sewing machine work table 85 shown in FIG.

In addition, when embroidering a hiragana or alphabet in a circular arc shape as shown in FIG. 4 (a) and aiming a character toward the center of the arc when creating a patch, the character that has been determined in advance as pattern data is used. When embroidering using a commercially available ROM card that stores rows, or because the embroidery frame 83 can only move in parallel in the X and Y directions, for example, when embroidering "Takahiro" in FIG. 4 (b) First, the embroidery frame 83 holding the work cloth 84 is first attached to the embroidery frame holding part 86, and the embroidery frame is embroidered with a "ta". Then, the embroidery frame 83 is once removed from the embroidery frame holding part 86, After removing the work cloth 84 from the embroidery frame 83 and rotating the work cloth 84 according to the intuition of the operator to determine the position of "?", Set the work cloth 84 and the embroidery frame 83 again and "?" Embroidery Was there. Then, by repeating this procedure, a desired character string such as "Takahiro" is embroidered. Similarly, in the case of "HAPPY BIRTHD AY" shown in FIG. 4A, H and A are sequentially positioned while removing the work cloth 84 to perform embroidery.

[0004]

[Problems to be solved by the device]

 However, when a commercially available ROM card as described above is used, only the characters preset by the manufacturer can be embroidered, and therefore it is not possible to embroider your own name such as "Takahiro" in Fig. 4 (b). There wasn't. Further, according to the embroidery frame 83, after the first character “ta” is embroidered, the positioning for embroidering the next character “ka” “hi” “ro” is performed from the embroidery frame holding portion 86 each time. The frame 83 was removed, the work cloth 84 was removed from the embroidery frame 83, and this was done by the operator's intuition. Therefore, there is a problem that not only the work is complicated but also positioning is very difficult and skill is required when the number of characters is large as in “HAPPY BIRTHDAY” in FIG.

The present invention has been made in order to solve the above-mentioned problems, and the embroidery frame that holds the work cloth has a substantially circular shape, and the embroidery outer frame that rotatably houses the embroidery frame and the embroidery outer frame. By providing an index of rotation angle so that the work cloth can be rotated and positioned in the outer frame of the embroidery while being held in the embroidery frame, the embroidery can embroider characters in an arc shape easily and beautifully. It is intended to provide a sewing machine having a frame device.

[0006]

[Means for Solving the Problems]

 To achieve this object, a sewing machine provided with an embroidery frame device of the present invention holds a needle bar that moves up and down in conjunction with the rotation of a drive shaft and a thread that is supported by the needle bar and that constitutes a stitch. A stitch forming means for forming a stitch on the work cloth in cooperation with the needle, a main body machine frame for supporting the stitch forming means, and an embroidery framework for holding the work cloth. In the sewing machine in which the relative positional relationship between the needle bar and the embroidery frame is changed to form a stitch by the stitch forming means, the shape of the embroidery frame is made substantially circular, and the embroidery frame is provided on the outside thereof. An embroidery outer frame that is rotatably accommodated is provided, and an index indicating an angle is provided on at least one of the embroidery outer frame and the embroidery frame.

[0007]

[Action]

 In the embroidery frame device of the present invention having the above-mentioned configuration, the operator holds the work cloth between the embroidery frame sets and connects the embroidery frame set to the embroidery outer frame to embroider the first character of the character string. Then, the positioning of the second and subsequent characters is sequentially performed by rotating the embroidery frame set in which the cloth is fixed in the outer frame of the embroidery, using the index indicating the angle as a guide.

[0008]

【Example】

 Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

FIG. 5 shows an appearance of the embroidery sewing machine. The main body machine frame 10 is composed of a work table 14 having a flat needle plate 12 and an arm portion 16. The arm portion 16 has a drive shaft connected to and driven by a main motor (not shown) rotatably held therein. Has been done.

A needle bar 18 that moves up and down in synchronization with the rotation of the drive shaft is provided at the left end of the arm 16 facing the work table 14, and the needle bar 18 has a stitch. A needle 20 for holding the upper thread is attached.

In addition, a pattern selection unit 22 for the operator to select a sewing pattern or the like is provided on the right front surface of the arm unit 16.

A needle hole 24 is provided in a substantially central portion of the needle plate 12, and a needle 20 can be moved in and out with the needle bar 18 as it goes up and down. Below the needle plate 12, there is provided a shuttle mechanism 26 which constitutes a stitch forming means as shown in FIG. 6 for forming a stitch on the work cloth 62 in cooperation with the vertically moving needle 20. There is.

The shuttle mechanism 26 is composed of a resin-made inner hook 32 for accommodating a bobbin 30 on which a lower thread 28 is wound, and a metallic outer hook 34 for slidably holding the inner hook 32. There is.

The sword tip 36 of the outer hook 34 complements the loop of the upper thread formed when the needle 20 stuck in the work cloth 62 rises and entangles the upper thread and the lower thread 28 to form a stitch. Is made.

On the other hand, on the left side of the workbench 14, an embroidery frame holder 42 for attaching an embroidery frame set 40, to which the work cloth 62 is fixed, which will be described later, together with an embroidery outer frame 60, which will be described later, can be moved in the XY directions. An XY moving device 44 is attached to the main body frame 10.

As shown in FIG. 7, the embroidery frame holding portion 42 has two notches 48 in a metal fitting 46, and a chevron-shaped leaf spring 50 is provided so as to narrow the width of the notches 48. It is fixed.

As shown in FIG. 5, the XY moving device 44 is inserted between two fixed rails 52, 54 arranged in parallel in the X direction and between the fixed rails 52, 54 so as to be movable in the X direction. The crossed moving rail 56, an X-direction pulse motor (not shown) that moves the moving rail 56 in the X direction along the fixed rails 52 and 54, and the embroidery frame holder 42 along the moving rail 56 in the Y direction. It consists of a Y-axis pulse motor (not shown) that moves the

FIG. 1 shows an embroidery frame set 58 and an embroidery outer frame 60 according to the present invention. The embroidery frame 58 for fixing the work cloth 62 is composed of a circular embroidery frame small 64 and a substantially circular embroidery frame large 66 having an inner diameter larger than its outer diameter as shown in FIG. 66 has a discontinuous portion 68 which is discontinuous at a part thereof. The inner diameter of the embroidery frame large 66 can be adjusted by tightening the tightening screw 70 that is passed over the discontinuous portion 68. A triangular mark 65 is provided on the upper surface of the large embroidery frame 66. The work cloth 62 is fixed by being sandwiched between the small embroidery frame 64 and the large embroidery frame 66 as shown in FIG. On the outside of the embroidery frame 58, a substantially circular embroidery outer frame 60 is provided so as to rotatably accommodate the embroidery frame 58 having a fixed work cloth 62. At one end of the embroidery outer frame 60, there is a mounting portion 72 for mounting the embroidery outer frame 60 on the embroidery frame holding portion 42.

As shown in FIG. 9, the mounting portion 72 is configured such that two shafts 76 are caulked on the side surface of a metal holder 74. When the embroidery outer frame 60 is mounted on the embroidery frame holder 42, the two shafts 76 are fitted into the cuts 48 of the embroidery frame holder 42 from above.

At this time, the leaf spring 50 escapes to the right in FIG. 7, and when the two shafts 76 are further pushed down, the leaf spring 50 finally returns to its natural state, and the embroidery outer frame 60 is embroidered. It is fixed to the frame holding portion 42 and attached to the sewing machine as shown in FIG.

Further, an embroidery frame fixing screw 78 is provided on the side surface of the embroidery outer frame 60, and by tightening this, the rotation of the embroidery frame assembly 58 can be stopped and fixed. The upper surface of the embroidery outer frame 60 is graduated from 0 ° to 350 ° at intervals of 10 °.

Next, the operation will be described. For example, when an operator tries to embroider the character "Takahiro" on a circle and directs the character toward the arc center, as shown in FIG. 4, first, the work cloth 62 is placed on the embroidery frame large 66, The work cloth 62 is fixed by pushing the small embroidery frame 64 together with the processing cloth 62 into the large embroidery frame 66 from above. In this way, the embroidery frame 58 to which the work cloth 62 is fixed is further inserted inside the embroidery outer frame 60, and the embroidery frame fixing screw 78 is tightened so that the embroidery frame 58 is inserted into the embroidery outer frame 60. Fix it. At this time, the triangle mark 65 and the scale on the embroidery outer frame 60 are aligned.

Then, the embroidery outer frame 60 is attached to the embroidery frame holding section 42, and "ta" is selected by the pattern selection section 22 to start embroidery. Next, when the "ta" is finished being embroidered, the manufacturer loosens the embroidery frame fixing screw 78 and leaves the embroidery frame 58 free to rotate, and while watching the scale on the outer embroidery frame 60, the embroidery frame 58 is counterclockwise. Then, the embroidery frame fixing screw 78 is tightened by rotating the embroidery frame assembly 58 again by rotating the embroidery frame assembly 58 by 30 °. Then, "ka" is selected by the pattern selection unit 22 to perform embroidery. The characters "Takahiro" are embroidered by repeating the same procedure and embroidering one by one.

By doing so, the worker does not remove the work cloth 62 when positioning the “or” “hi” “ro”, and the work cloth 62 is fixed in the embroidery outer frame 60. Positioning can be easily performed by rotating 58.

Further, since the operator only has to rotate by 30 ° while observing the scale, it does not require skill, and accurate positioning makes it possible to obtain a beautiful finished product.

In order to change the size of the arc in which the characters are arranged, the embroidery frame 58 for fixing the work cloth 62 having different radii is used.

Further, in this embodiment, the embroidery outer frame 60 holding the embroidery frame set 58 has a substantially circular shape, but it may have a polygonal shape circumscribing the embroidery frame set 58 at at least two points.

[0028]

[Effect of device]

 As is clear from the above description, according to the embroidery frame device of the present invention, since the embroidery framework has a substantially circular shape, the embroidery framework can be rotated at any angle within the outer embroidery frame. The index indicating the angle serves as a guide for the rotation angle when the embroidery framework is rotated within the outer embroidery frame. Therefore, the operator embroiders the first character on the work cloth fixed to the embroidery frame, and then rotates the embroidery frame within the outer frame of the embroidery at the desired angle using the index of the angle as a guide. You can decide the embroidery position of. Therefore, the embroidery characters can be easily arranged in a circular arc without removing the work cloth from the embroidery frame when positioning the second and subsequent characters, and the position can be determined by rotating the embroidery characters using the angle index as a guide. It has excellent effects such as obtaining a finished product that is accurate and looks good.

[Brief description of drawings]

FIG. 1 is a perspective view of an embroidery set in which an embroidery outer frame and a cloth are fixed.

FIG. 2 is a perspective view showing a configuration of a conventional embroidery frame.

FIG. 3 is an overall view of a sewing machine.

FIG. 4 is a diagram showing an example of embroidery.

FIG. 5 is a front view of the sewing machine.

FIG. 6 is a view showing a shuttle mechanism.

FIG. 7 is an enlarged view of a mounting fitting of an embroidery frame holder.

FIG. 8 is a perspective view showing the structure of the present invention.

FIG. 9 is an enlarged view of a fitting for the embroidery outer frame.

FIG. 10 is a perspective view showing a state where the embroidery outer frame and the embroidery frame of the present invention are mounted on the sewing machine.

[Explanation of symbols]

 10 Main machine frame 20 Needles 18 Needle bar 40 Embroidery frame set 60 Embroidery outer frame 62 Work cloth

Claims (2)

[Scope of utility model registration request] 1. A sewing machine, comprising: a needle bar that moves up and down in association with the rotation of a drive shaft; and a needle that is supported by the needle bar and holds a thread forming a stitch, and cooperates with the needle to sew a work cloth. A stitch forming means for forming stitches, a main body machine frame for supporting the stitch forming means, and an embroidery frame set for holding a work cloth are provided, and the relative positional relationship between the needle bar and the embroidery frame set is changed. In the sewing machine for forming a stitch by the stitch forming means, the embroidery frame is formed into a substantially circular shape, and an embroidery outer frame for rotatably storing the embroidery frame is disposed outside the embroidery outer frame. A sewing machine provided with an embroidery frame device, wherein an index indicating an angle is provided on at least one of the embroidery frame. 2. The embroidery frame device according to claim 1, wherein the shape of the embroidery outer frame is a substantially circular shape having an inner diameter slightly larger than the outer diameter of the embroidery frame, and the embroidery outer frame or the embroidery frame is formed. A sewing machine equipped with an embroidery frame device, characterized in that an index indicating an angle is provided on at least one side.