JP3043386B2 - Embroidery machine for sewing machine - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an embroidery device for a sewing machine which is used by being attached to a sewing machine.

(Prior Art) Conventionally, a dedicated sewing machine having an embroidery frame is used for performing embroidery with a sewing machine.

For this reason, the applicant of the present invention has disclosed in Japanese Patent Application No. 90700/1990 filed on April 3, 1990 an embroidery that is detachably mounted on a presser bar of a sewing machine and an embroidery that is attached to the substrate so as to be movable back and forth and right and left. An embroidery frame having a frame, a mounting portion of the original pattern of the embroidery provided on the embroidery frame, and a mounting rod fixed to the substrate and having a pointer at the tip thereof positioned on the figure of the original pattern of the embroidery; By moving the indicator needle back and forth and left and right so that the pointer moves relatively along the original pattern of embroidery, the same figure as the original pattern of embroidery can be embroidered by the sewing machine. By using an embroidery device, embroidery can be performed with a general sewing machine without the need for a special embroidery sewing machine.

Further, in the embroidery device of the above-mentioned application, in order to maintain the position of the embroidery frame with respect to the sewing machine needle and the position of the original drawing with respect to the indicator needle always in a fixed positional relationship, that is, the embroidery frame with respect to the substrate having the indicator needle In order to be able to move while always keeping parallel, a straight bar is fixed to the board with respect to the original drawing, and a horizontally long plate is attached to this bar so as to be slidable in the axial direction. And the embroidery frame are connected by two vertically long arms to form a parallel link between the horizontally long plate and the embroidery frame.
According to such a configuration, the degree of freedom of the horizontal movement of the embroidery frame with respect to the horizontally long plate by the parallel link and the degree of freedom of the movement of the horizontally long plate itself in the front-rear direction perpendicular to the horizontally long plate. Thereby, the hoop can be moved back and forth and right and left while keeping the hoop parallel to the substrate. In addition, in order to allow the horizontal plate to slide in the axial direction with respect to the rod of the substrate, a support is fixed to the horizontal plate, and a tube for slidably accommodating the rod is provided in the support.

(Problems to be Solved by the Invention) However, in the embroidery device of Japanese Patent Application No. 90700 in 1990, a rod fixed to a substrate to give a degree of freedom in the front-rear direction of an embroidery frame, and a Because of the use of a horizontally long plate that can slide in the axial direction, for example, when dust or the like enters between the rod and the tube that contains this rod, or when the rod is twisted at all There is a problem that the sliding of the horizontally long plate is obstructed and handling becomes difficult. Further, a structure in which a support is fixed to the horizontally long plate, and a tube for slidably storing a rod is further provided in the support. Therefore, there is a problem that the assembly and the structure are complicated.

(Means for Solving the Problems) In order to solve the above problems, the invention according to claim 1 includes a substrate detachable from a presser bar of a sewing machine, and an embroidery frame movably attached to the substrate so as to be able to move back and forth and right and left. Provided on the embroidery frame, a mounting portion of the original pattern of embroidery, and a mounting rod fixed to the substrate and having a pointing needle at the tip located on the figure of the original pattern of embroidery, An embroidery device for a sewing machine, in which the embroidery frame is moved back and forth and left and right so that the indicating needle moves relatively along the original pattern of the embroidery, so that the same figure as the cause of the embroidery can be embroidered by the sewing machine. The substrate and the embroidery frame may be connected to the first parallel link having two arms connected between the substrate and the intermediate plate, and may be connected between the intermediate plate and the embroidery frame. Two arms Having a second
The embroidery frame comprises an inner frame and an outer frame which can be fitted in close contact with the inner frame, and an inner peripheral portion of the outer frame has a radial direction. A plurality of U-shaped cross-sections are formed to protrude inward at predetermined intervals in the circumferential direction with a predetermined gap therebetween, and the thickness of the cloth in which the U-shaped portion is held between the inner frame and the outer frame. It is characterized in that it is configured to be elastically deformable in the radial direction according to this.

According to the first aspect of the present invention, one of the first parallel link and the second parallel link is set so as to mainly provide a degree of freedom of movement in the left-right direction with respect to the substrate, and the other is provided mainly with a degree of freedom in the front-rear direction. By setting the hoop to be given, it is possible to give the embroidery frame a degree of freedom to move back and forth and left and right without providing a sliding portion. Therefore, the structure is simplified, and the reliability of the operation is improved.

Further, since the plurality of U-shaped portions can be elastically deformed in the radial direction according to the thickness of the cloth held between the inner frame and the outer frame, the thickness of the cloth to be embroidered with the embroidery device is small or large. Can be used regardless of change.

The invention according to claim 2 is characterized in that, in claim 1, the substrate can be attached to a low shank presser bar, and when the substrate is mounted on a high shank presser bar, the embroidery frame is attached to the low shank presser bar. It has a configuration that further includes a metal fitting that can be attached so that it is located at the same height as when it is installed, similar to the case where the embroidery device is attached to the holding bar of Heinjank and the same as that attached to the holding bar of Low Shank. , The embroidery can be performed by the same operation.

According to a third aspect of the present invention, in the first aspect, a spring is provided for constantly urging the indicating needle toward the original pattern of the embroidery. In addition, the original drawing can be moved.

Next, an embodiment of the present invention will be described with reference to the drawings.
In the figure, reference numeral 1 denotes an upper arm of the sewing machine, 2 denotes a bed below the sewing machine, and 2a and 2b denote outer edges thereof. Reference numeral 3 denotes a holding bar, 4 denotes a lifting lever, 5 denotes a needle bar, and 6 denotes a sewing needle.

The embroidery device of the present embodiment is used by being attached to a presser bar 3 of a sewing machine, and FIG. 1 is a side view showing the attached state. In addition, FIG. 2 et seq. Are diagrams showing the operation of the embroidery device for easy explanation.

The substrate 7 is detachable from the presser bar 3 of the sewing machine, and has a long arm-shaped flat plate 7a extending in the cloth feeding direction by a feed dog at a part thereof as shown in FIG. On the lower surface of the long arm-shaped flat plate 7a, Japanese arm plates 8 and 9 are 8a and 9a, respectively.
At the pivot. The distal ends of the arm plates 8 and 9 are attached to a horizontally long plate 11 having a dimension longer than the diameter of an inner frame 16 (which forms an embroidery frame in cooperation with an outer frame 17 described later).
The arm plates 8 and 9 are swingable in a fan-like and parallel manner at two central positions 8b and 9b in the longitudinal direction of the base plate. It can be translated in the front-rear direction indicated by 10 inside.

One end of each of vertical arms 12 and 13 is pivotally attached to both ends 11a and 11b of the horizontal plate 11, and the other ends of these vertical arms 12 and 13 are on the left side of the outer frame 16 with respect to the flat plate 15. 16a and the right side portion 16b, respectively,
6, that is, the embroidery frame can be translated in the left-right direction with respect to the horizontally long plate 11 in the horizontal direction indicated by 14 in the figure, so that the embroidery frame can be translated in the front-rear direction 10 and the left-right direction 14 or the oblique direction with respect to the substrate 7. It has become.

That is, the first parallel link by the arm plates 8 and 9 is provided between the board 7 and the horizontally long plate 11, and the first parallel link between the horizontally long plate 11 and the
That is, a second parallel link composed of vertically long arms 12 and 13 is provided between the horizontally long plate 11 and the inner frame 16, and the horizontally long plate 11 is an intermediate plate between these two parallel links.

In this embodiment, as shown in FIG. 3, a mounting portion 7b of the substrate 7 is provided in accordance with a low-shank sewing machine in which the position of the mounting screw 3a on the holding rod 3 is low. In order to attach the embroidery device to the high shank sewing machine where the position of the mounting screw 3a is high, a Γ-shaped metal fitting 20 is provided, and the metal fitting 20 is screwed into the screw hole 19a on the side surface of the substrate 7 with the screw 19. By tightening, even if the presser bar 3 is attached to a high shank sewing machine with a higher height as shown in FIG.
16 In other words, the lower surface of the embroidery frame is the same height as the low shank sewing machine, so that stable embroidery can be performed. In the drawing, reference numeral 19b is a half-finished pin for fixing the position of the bracket 20.

The inner frame 16 is a circular frame provided below the flat plate 15 and is used in combination with the outer frame 17, and the embroidery cloth 18 is located between the inner frame 16 and the outer frame 17 as is well known. It is sandwiched and held. The inner frame 16 has a crescent-shaped bottom surface portion 16c, which has a role of reinforcing and a role of preventing the embroidery frame from falling off the outer edges 2a, 2b of the bed 2 of the sewing machine. .

As shown in FIG. 9, the outer frame 17 has a shape in which a U-shaped portion 22 having the same radial cross section is connected to an outer ring 17a having a L-shaped cross section in the radial direction.
Are arranged at regular intervals in the circumferential direction on the inner peripheral surface 17b, and protrude radially inward of the outer ring 17a. In other words, the U-shaped portion 22 has a waveform, so that the elasticity is large and the cloth 18 can be held regardless of the thickness of the cloth 18.

Further, the pointer 27 for tracing the upper surface of the original drawing 24 is turned by the winding spring 23 provided at the distal end of a mounting rod 28 to which the pointer 27 is attached, so that the distal end 27a of the pointer 27
4 is urged in the direction toward the transparent plate 25 functioning as a presser of the original drawing paper 24a, so that the tip 27a of the indicator needle 27 can trace the original drawing 24 accurately.

The embroidery is performed by applying a spiral spring 6a for holding the cloth to the needle set screw 5a.
In the figure, reference numeral 21 denotes a position of the sewing needle 6, and reference numeral 26 denotes a cover.

As described above, by holding the handle 29, 29a or 30, 30a provided on the flat plate 15 and moving the embroidery frame composed of the outer frame 17 and the inner frame 16, an arbitrary name or one-point Embroidery can be easily performed using a general sewing machine that has been widely used.

[Brief description of the drawings]

FIG. 1 is a left side view showing an embroidery device of the present invention attached to a sewing machine, FIG. 2 is a plan view showing the embroidery device with a cover removed, and FIG. FIG. 4 is a cross-sectional view taken along the line AB in FIG. 3, and FIG. 5 is a diagram illustrating a state in which the substrate is mounted on a high shank sewing machine having a high holding rod. FIG. 6 is a sectional view taken along the line CD of FIG. 5,
FIG. 7 is a plan view of the outer frame, FIG. 8 is a plan view of the inner frame to be fitted inside the outer frame with the upper flat plate removed, and FIG. 9 is a plan view of the inner frame and the outer frame. FIG. 10 is a plan view showing the fitted state together with its EF line section and GH line section. FIG. 10 is a sectional view showing a state where an embroidery cloth is inserted between an inner frame and an outer frame and fitted. 11 and 12 are explanatory views showing a state in which the tip of the indicator needle is always in contact with the transparent plate of the original press by the action of a wrapping spring, and FIG. 13 is a two-handed handle of a flat plate provided with an embroidery frame. It is a figure which shows the state which is operated by holding it. 3 ... Pressing rod 7 ... Substrate 8, 9 ... Arm plate 11 ... Horizontal plate 12, 13 ... Vertical arm 16 ... Inner frame 17 ... Outer frame 20 ... Hardware 22 ... U-shaped part 23 … Wind spring 27 …… Indicator needle 28 …… Mounting rod

Claims (3)

(57) [Claims] An embroidery frame attached to a holding rod of the sewing machine so as to be detachable from the sewing machine, an embroidery frame attached to the substrate so as to be movable back and forth, left and right, a mounting portion for an original embroidery pattern provided on the embroidery frame; A mounting rod fixed to a substrate and having a pointer at an end portion thereof positioned on the figure of the original pattern of the embroidery, such that the pointer moves relative to the original pattern of the embroidery frame along the original pattern of the embroidery. An embroidery machine for sewing, the same figure as the original figure of the embroidery being embroidered by moving the sewing machine back and forth and right and left, wherein the substrate and the embroidery frame are located between the substrate and the intermediate plate. A first parallel link having two arms connected to
A second parallel link having two arms connected between the intermediate plate and the embroidery frame, the embroidery frame being closely fitted to the inner frame and the inner frame; It consists of a possible outer frame, and on the inner peripheral portion of the outer frame,
A cloth in which a plurality of U-shaped portions in a radial direction cross section are formed to protrude inward at predetermined intervals in a circumferential direction, and the U-shaped portion is held between the inner frame and the outer frame. An embroidery device for a sewing machine, wherein the embroidery device is configured to be elastically deformable in a radial direction according to a thickness of the sewing machine. The substrate can be mounted on a low shank presser bar, and when the substrate is mounted on a high shank presser bar, the hoop frame has the same height as when mounted on the low shank presser bar. The embroidery device for a sewing machine according to claim 1, further comprising a metal fitting that can be attached to the sewing machine. 3. An embroidery device for a sewing machine according to claim 1, further comprising a spring for constantly urging said indicating needle toward said embroidery pattern.