JPH09111640A - Sewing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the embroidery sewing in an accurate positional relation with an embroidery pattern which already has been sewed on a cloth only by changing fixing position of a large-sized frame, which is larger than a standard frame, with a simple work without detaching the cloth from the large-sized frame in a case where embroidery sewing is carried out in a larger region than the standard frame. SOLUTION: A sewing machine capable of sewing an embroidery is provided with a carriage 3 and plural subsidiary carriages 4. The carriage 3 can fix a standard embroidery frame for embroidery sewing and are controllable both in a Y-direction which is longitudinal in the sewing machine and in an X- direction rectangular to the Y-direction. The subsidiary carriages 4 have fixing parts for a large-sized frame H2 larger than the standard embroidery frame which are placed apart from the fixing parts D for the embroidery frame of the carriage 3 in the Y-direction and are detachably attached on the carriage 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sewing machine capable of embroidering, and a sewing machine having an auxiliary carriage detachably attached to a carriage for driving an embroidery frame.

[0002]

2. Description of the Related Art A conventional sewing machine capable of embroidering is
The embroidery frame (hereinafter referred to as the standard frame) was attached to the carriage that can be controlled in the Y direction in the front-rear direction of the sewing machine and the X direction orthogonal thereto, but when embroidering was performed on a wide range of cloth. Had to replace the cloth against the standard frame. The work of reattaching the cloth to the standard frame requires the reattachment of the cloth in an accurate positional relationship with respect to the already sewn embroidery pattern, which requires a lot of work and a solution is desired.

[0003]

SUMMARY OF THE INVENTION The problem to be solved by the present invention is to make a large size larger than the standard frame by a simple operation without removing the cloth from the hoop when embroidering in a wider area than in the case of the standard frame. By changing the attachment position of the frame, it is possible to perform embroidery sewing in a precise positional relationship with the embroidery pattern already sewn on a wide area on the cloth.

[0004]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems of the prior art, the present invention provides a sewing machine capable of embroidering, to which a standard hoop for embroidering can be attached, and a Y-direction in the front-rear direction of the sewing machine. Direction and the carriage that can be controlled in the X direction orthogonal to this direction, and the mounting portion of the large frame larger than the standard hoop with respect to the hoop mounting portion of the carriage that is detachably mounted to the carriage in the Y direction. A sewing machine having a plurality of auxiliary carriages formed separately from each other.

In order to solve the above-mentioned problems of the prior art, the present invention further comprises, in the sewing machine, in addition to the standard embroidery frame, a plurality of large-sized frames that are used by replacing the carriage and the auxiliary carriage. A sewing machine provided is provided.

In order to solve the above-mentioned problems of the prior art, the present invention is a sewing machine in which a plurality of large frame mounting portions are formed on the auxiliary carriage at predetermined intervals in the Y direction. Is provided.

In order to solve the above-mentioned problems of the prior art, the present invention is such that, in the sewing machine, the auxiliary carriage is removably attached to the carriage via its attachment mechanism portion and the attachment portion of the carriage. The sewing machine thus provided is provided.

According to the present invention, in a sewing machine capable of embroidering, a carriage to which a standard embroidery frame for embroidering can be attached and which can be controlled in the Y direction in the longitudinal direction of the sewing machine and in the X direction orthogonal thereto, A plurality of auxiliary carriages, each of which is detachably attached to the carriage and has a large frame mounting portion which is larger than the standard embroidery frame with respect to the embroidery frame mounting portion of the carriage and which is spaced apart in the Y direction. Therefore, even when embroidering on a wide area of cloth, by replacing the large frame between the carriage and the auxiliary carriage and performing embroidering, the positional relationship of each embroidery pattern can be maintained accurately. You can do it.

Further in accordance with the present invention, the auxiliary carriage has a Y
By forming multiple embroidery frame attachment parts at predetermined intervals in a certain direction, a large frame can be used to accurately characterize a character string such as a monogram in a wider area than the standard frame can be embroidered on the cloth. Can be sewn on.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION

(1) Schematic Configuration of Sewing Machine Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a perspective view of a computer sewing machine (hereinafter, sewing machine) having an embroidery sewing function according to the present invention. An XY drive mechanism 17 (FIG. 3) is built in a base 2 of the sewing machine 1 and its output is provided. A standard embroidery frame H1 (FIG. 9, hereafter standard frame) is attached to the carriage 3 at the end, and the standard frame H1 is controlled in the Y direction in the front-rear direction of the sewing machine and in the X direction orthogonal thereto to perform embroidery sewing. It is like this.

A display device 18 is arranged on the front cover of the sewing machine 1. The display device 18 includes a liquid crystal display unit and a transparent touch panel located in front of the liquid crystal display unit, and constitutes embroidery stitch pattern selection means 19 (FIG. 3) as a screen key in addition to various displays relating to sewing. Start / Stop key 11
Causes the stopped sewing machine to be started by the operation and stops the operating sewing machine.

As shown in FIG. 2, a mounting portion A of the auxiliary carriage 4 is formed on the rear side of the carriage 3, and the auxiliary carriage 4 is detachably mounted to the mounting portion A by its mounting mechanism portion B. Has become.
Details of the mounting portion A and the mounting mechanism portion B will be described later.

(2) Sewing machine control block diagram Next, a control block diagram of the sewing machine of the present invention will be described with reference to FIG. The CPU 20 has an embroidery data storage means M including a memory card or the like via an I / O bus.
The EM is connected to the embroidery data storage means MEM,
The stitch data of a plurality of embroidery patterns and the display data of the patterns are stored.

Further, a storage means ROM and a storage means RAM are connected to the CPU 20 via an I / O bus.
The storage means ROM has a plurality of storage areas. When these storage areas are shown as independent storage means, the storage means ROM stores a control program for controlling the entire sewing machine. The fixed data storage means ROM2 or the like stores fixed data necessary for executing The storage device RAM is composed of a work memory area or the like for temporarily storing various data necessary for executing the control program.

Start / stop key 1 on the I / O bus
1 (hereinafter S / S key 11) is connected, and S / S key 11
As described above, the operation starts the stopped sewing machine and stops the operating sewing machine.

Further, various drive circuits are connected to the I / O bus, and the seam forming mechanism 14 is connected to the motor drive circuit (not shown).
The sewing machine motor 23 for driving the
The rotation phase of the upper shaft of No. 4 is detected by the upper shaft phase sensor 12. Furthermore, an X drive stepping motor 1 is installed on the I / O bus.
5 (X drive SM) and Y drive stepping mode 16
(Y drive SM) is connected through a stepping motor drive circuit (not shown), and these motors control the XY drive mechanism 17 for driving and controlling the hoop during frame embroidery sewing.
Drive.

An auxiliary carriage 4 is detachably attached to the carriage 3 at the output end of the XY drive mechanism 17, and the standard frame H1 is the carriage 3 and the large frame H2 is the carriage 3 and the auxiliary. The carriage 4 is detachably attachable to both sides.

Further, a display device 18 is connected to the I / O bus via a display control circuit (not shown). In this embodiment, the display device 18 comprises a liquid crystal display section and a transparent touch panel located in front of it. Then, the CPU 10 controls the display control circuit in response to the operation signals of various function keys, causes the liquid crystal display unit to display various screen keys in addition to the various displays related to sewing by switching the screen, and embroidery composed of the screen keys. The sewing pattern selection means 19 selects a desired embroidery pattern.

(3) Auxiliary Carriage Next, the auxiliary carriage 4 will be described. In normal embroidery stitching, the standard frame H1 is attached to the carriage 3 as shown in FIG. However, the size of the standard frame H1 is limited so that the size of the embroiderable range does not make the overall size of the sewing machine too large, and from another viewpoint, the size of the sewing machine is limited by the machine size. In the past, when expanding the embroidery area in the X and Y directions, it was necessary to remove the cloth from the embroidery frame and replace it.

According to the present invention, the auxiliary carriage 4 is attached to the carriage 3 so that a large frame in which the embroidery area is enlarged in the X direction and the Y direction can be used without replacing the cloth with the embroidery frame. In this embodiment, an example in which the embroidery range can be expanded in the Y direction will be described. As shown in FIG. 2, a mounting portion A is formed on the back side of the carriage 3 so that the auxiliary carriage 4 can be mounted. The mounting portion A includes a key-shaped hole 3a and a pair of position fixing guide holes 3b located on both sides thereof.
3c, the auxiliary carriage 4 can be firmly attached via its attachment mechanism B.

As shown in FIG. 6, the attachment mechanism B has its main portion located on the knob shaft 5 and both sides thereof, and a pair of guide pins (FIG. 6) engaged with the pair of guide holes 3b and 3c of the attachment A. (Not shown). The knob shaft 5 is a knob portion 5a
And the shaft portion 5b are integrally fixed, and the knob portion 5a
The spring 6 is inserted between the auxiliary carriage 4 and the auxiliary carriage 4, and the shaft portion 5b is inserted through the hole portion of the auxiliary carriage 4 and the washer 7 and the thrust is stopped by the E ring 8. A locking pin 9 is press-fitted near the tip of the shaft portion 5b.

When attaching the auxiliary carriage 4 to the carriage 3, the vicinity of the tip of the shaft portion 5b of the knob shaft 5 of the auxiliary carriage 4 is inserted into the key-shaped hole 3a of the carriage 3 and a pair of guide pins are provided in a pair of guide holes. 3b,
After being engaged with 3c, the auxiliary carriage 4 is firmly attached to the carriage 3 by a bayonet mechanism that rotates the knob portion 5a by about 90 degrees.

As shown in FIG. 4, the mounting portion C on the upper surface of the auxiliary carriage 4 has a key-shaped hole 4a through which the knob shaft of the large frame H2 is inserted and a pair of guide holes 4b for position fixing.
4c. Carriage 3 and auxiliary carriage 4
The method of attaching the large frame H2 to the carriage 3 is basically the same as the method of attaching the auxiliary carriage 4 to the carriage 3.

FIG. 4 shows a large embroidery frame H2 with a carriage 3
The maximum embroidery pattern is X when attached to the
Sew up to a range of 1 x Y1. Next, when the large frame H2 is removed from the attachment portion D of the carriage 3 and attached to the attachment portion C of the auxiliary carriage 4 which is displaced from the attachment portion D by Y2 as shown in FIG. 7, the embroiderable range is X1.
XY2 increases. Practically, Y2 can be increased to about Y1 = Y2, and in this case, it is possible to perform embroidery sewing to a range twice as large as the embroidery range in the case of the standard frame H1.

By adding the auxiliary carriages 4 as described above, when there are a plurality of auxiliary carriages 4, it is possible to use a plurality of large-sized frames having arbitrary sizes larger than the standard frame H1. That is, a large frame H larger than the standard frame H1
As for No. 2, one or a plurality of usable ones can be prepared in advance according to the specifications of the auxiliary carriage. After the embroidery work is completed, the large frame H2 is removed from the auxiliary carriage 4, and the auxiliary carriage 4 can be easily removed from the carriage 3 by rotating the knob portion 5a by about 90 degrees in the opposite direction to the mounting time. Can be stored in the storage case of the sewing machine.

In the present embodiment, the large frame of the auxiliary carriage 4 has one mounting portion C, but it is also possible to form a plurality of mounting portions at equal intervals in the Y direction.
For example, if they are formed at intervals of 10 mm in the Y direction, it is possible to easily and accurately make a wider area than the area that can be embroidered with the standard frame H1 on the cloth by changing the large frame H2 without removing the cloth from the large frame H2. It is possible to embroider character strings such as monograms at equal intervals of 10 mm.

[0027]

As described above, according to the present invention, even when embroidering a wide area of cloth, the large frame is replaced between the carriage and the auxiliary carriage and embroidering is performed. Embroidery can be performed while keeping the positional relationship of the pattern accurate.

Further in accordance with the present invention, the auxiliary carriage has a Y
By forming multiple embroidery frame attachment parts at predetermined intervals in a certain direction, a large frame can be used to accurately characterize a character string such as a monogram in a wider area than the standard frame can be embroidered on the cloth. The embroidery can be sewn on and the application field of the sewing machine can be greatly expanded.

[Brief description of the drawings]

FIG. 1 is a front perspective view of a sewing machine.

FIG. 2 is a perspective view of the back side of the sewing machine.

[Fig. 3] Control block diagram of the sewing machine

FIG. 4 is a plan view showing a state where a large frame is attached to the carriage.

5 is a view on arrow E of FIG.

FIG. 6 is an enlarged cross-sectional view near the attachment mechanism section B.

FIG. 7 is a plan view showing a state in which a large frame is attached to the auxiliary carriage.

FIG. 8 is a view on arrow F of FIG.

FIG. 9 is a plan view showing a state in which a standard frame is attached to the carriage.

FIG. 10 is a view on arrow G in FIG.

[Explanation of symbols]

 1 Sewing machine 3 Carriage 4 Auxiliary carriage A Carriage mounting part B Auxiliary carriage mounting mechanism part C Auxiliary carriage hoop mounting part D Carriage hoop mounting part H1 Standard hoop (standard frame) H2 Large hoop ( Large frame)

Claims (4)

[Claims] 1. A sewing machine capable of embroidering, to which a standard embroidery frame for embroidering can be attached and which is controllable in the Y direction in the front-rear direction of the sewing machine and in the X direction orthogonal thereto, and is attached to or detached from the carriage. A plurality of auxiliary carriages each having a large frame mounting portion which is larger than the standard embroidery frame and separated from each other in the Y direction with respect to the hoop frame mounting portion of the carriage in a freely mounted state. And sewing machine. 2. The sewing machine according to claim 1, further comprising a plurality of large frames that are used by being replaced between the carriage and the auxiliary carriage in addition to the standard hoop. 3. The auxiliary carriage is provided with a plurality of large frame mounting portions formed at a plurality of positions in the Y direction at predetermined intervals.
The sewing machine according to the item. 4. The auxiliary carriage is removably attached to the carriage via an attachment mechanism portion and an attachment portion of the carriage, according to any one of claims 1 to 3. The listed sewing machine.