JPH06158510A - Embroidery machine - Google Patents

Abstract

PURPOSE:To increase the sewing speed in sewing tubular processed fabric such as a T-shirt in an embroidery machine. CONSTITUTION:This embroidery machine is equipped with a support table 16 attached to a base frame 1 so as to lower from a rectangular framelike movable frame by a prescribed distance, an embroidery frame 21, supporting tubular processed fabric (W) and detachably installed in the movable frame and the frame part (20c) on the front side of the movable frame supported through a spacer member 17 attached to the under side thereof on the support table 16. Thereby, even if the movable frame is respectively and independently moved with an X-axis driving mechanism and a Y-axis driving mechanism, the embroidery frame 21 is always held at a prescribed position relatively to the support table. As a result, the sewing speed can be increased.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an embroidery machine, and more particularly to an embroidery frame which holds a tubular work cloth at a predetermined height.

[0002]

2. Description of the Related Art Conventionally, various embroidery machines have been put to practical use, such as a simple embroidery machine having only one sewing machine arm and a multi-head embroidery machine having a plurality of sewing machine arms. For example, in Japanese Patent Laid-Open No. 2-216253, a plurality of sewing machine arm portions are provided, and the same embroidery pattern can be simultaneously formed on a number of planar work cloths corresponding to the number of these sewing machine arm portions. A rectangular frame-shaped movable frame for mounting a plurality of flat frames for holding the work cloth is mounted on the table, and the movable frame is moved by an X-axis drive mechanism.
There has been proposed an embroidery machine configured to be driven in the X-axis direction by an axis-driving motor and to be moved in the Y-axis direction by a Y-axis driving motor via a Y-axis driving mechanism.

By the way, in this type of embroidery machine, in general, instead of a flat embroidery frame, a tubular frame for performing embroidery sewing on a tubular work cloth can be mounted, and a tubular T-shirt or the like can be attached. It is possible to sew embroidery even on fabric. For example,
In Japanese Utility Model Publication No. 1-11751, the front frame portion of the movable frame is removed, and an embroidery frame holder having a substantially U-shaped plan view is attached to the rear frame portion of the movable frame in a cantilever manner at its rear end. On the other hand, on the pair of left and right mounting parts of this embroidery frame holder,
There has been proposed an embroidery machine configured to attach a tubular frame that holds a tubular fabric and sew an embroidery pattern on a tubular fabric such as a T-shirt.

[0004]

However, as described above, while removing the front frame part of the movable frame, the tubular frame is mounted on the embroidery frame holder which is cantilevered on the back frame part of the movable frame. Therefore, when the embroidery is sewn, the tubular frame swings up and down with respect to the movable frame, which causes a problem that the sewing speed cannot be increased. In particular, when a thick work cloth is sandwiched between the cylinder frames, there is a problem that the front side of the cylinder frame hangs downward and the cylinder frame collides with the cylinder bed.

The present invention has been made to solve the above problems, and an object of the present invention is to provide an embroidery machine capable of increasing the sewing speed when sewing a tubular work cloth.

[0006]

In order to achieve the above object, an embroidery machine according to a first aspect of the present invention is arranged on a base frame and has an X-axis drive mechanism in an orthogonal X-axis direction and Y-axis direction. And an embroidery frame having a rectangular frame-shaped movable frame that is independently driven and driven by a Y-axis drive mechanism, and an embroidery frame that supports a work cloth is detachably attached to the movable frame for embroidery. A supporting table which is attached to the base frame lower than the movable frame by a predetermined distance and supports a front frame part of the movable frame, and a front frame for supporting the front frame part of the movable frame on the support table. A spacer member attached to the lower side of the portion and slidable on the support table.

[0007]

In the embroidery machine according to the first aspect of the present invention, the embroidery frame that supports the work cloth is detachably attached to the movable frame having a rectangular frame shape, and the front frame portion of the movable frame has the lower side thereof. The movable frame is supported by a support table mounted on the base frame lower than the movable frame by a predetermined distance via a spacer member mounted on the X-axis drive mechanism and the Y-axis mechanism.
Even when they are independently moved by the shaft driving mechanism, the embroidery frame mounted on the movable frame is always held at a predetermined position with respect to the support table, and the sewing speed can be increased. Further, since the support table is provided at a position lower than the movable frame by a predetermined distance, the work cloth portion below the embroidery frame can freely move on the support table when the embroidery frame holding the tubular work cloth is moved. It can be moved, and it becomes possible to embroider a tubular work cloth.

[0008]

An embodiment of the present invention will be described below with reference to the drawings. In this embodiment, the present invention is applied to a multi-head embroidery machine equipped with three embroidery sewing machines. The multi-head embroidery machine M will be described. As shown in FIG. 1, a sewing machine support plate 2 having a substantially rectangular shape in a plan view and having a predetermined length in the left-right direction is provided on a rear side of an upper surface of a base frame 1 extending in the left-right direction. Is provided, and this sewing machine support plate 2
Three embroidery sewing machines MH are lined up in the left-right direction at predetermined intervals. Needle bar cases 7 having 12 needle bars (not shown) are attached to the front ends of the arm sections 3 of these embroidery sewing machines MH, and the needle bar cases 7 are moved in the left-right direction by a needle bar selection mechanism (not shown). And a needle bar for forming an embroidery stitch with an embroidery thread of a desired color is selectively selectable.

On the other hand, the bed main body 5 on which the pedestal 4 connected to the arm 3 is erected is mounted on the sewing machine support plate 2, and the cylinder bed 6 is provided from the front end of the bed main body 5.
Of the cylinder bed 6 is provided with a thread catcher (not shown) at the tip (front end) of the cylinder bed 6, and a desired color can be obtained in cooperation with the sewing needle 8 attached to the selected needle bar. The stitches are formed on the work cloth W with the embroidery thread.
Here, an upper shaft (not shown) for moving the needle bar and the balance 9 up and down and a lower shaft (not shown) for rotating the thread catcher are rotated by a V-belt 10 connected to a sewing machine motor (not shown). It is driven by the driven drive shaft 11.

A table 15 having a rectangular shape in a plan view is arranged at a position lower than the upper surface of the cylinder bed 6 by a predetermined distance on the front side of the sewing machine support plate 2. Above the table 15 and a predetermined distance from the upper surface of the cylinder bed 6. (For example, about 2
0 mm) lower, a support table 16 having a length in the front-rear direction corresponding to a substantially front half portion of the table 15 is disposed over substantially the entire width of the base frame 1, and an inclined support member 19 causes the base frame 1 to extend. 1 is mounted so that the height position can be adjusted. Here, as shown in FIG. 2, a gap of a predetermined distance (for example, 50 to 60 mm) is provided between the rear end of the support table 16 and the front end of the cylinder bed 6. A movable frame 20 having a rectangular frame shape in plan view extending in the left-right direction is placed on the support table 16. The drive frame portion 20a at the right end of the movable frame 20 is driven to move in the X-axis direction (horizontal direction) by an X-axis drive mechanism (not shown), and the drive frame portion 20b at the left end thereof and the drive frame portion 20a. And are simultaneously driven and moved in the Y-axis direction (front-back direction) by a Y-axis drive mechanism (not shown). Therefore,
As shown in FIG. 2, the movable frame 20 is movable on the XY plane by the X-axis drive mechanism and the Y-axis drive mechanism.

Here, as shown in FIGS. 1 to 3, a spacer member 17 having a predetermined length, in which a hard felt is adhered to the lower end surface, is suitable below the front frame portion 20c of the movable frame 20. The front side frame portion 20c is slidable on the support table 16 which is lower than the movable frame 20 by a predetermined distance via the spacer member 17 and is fixed at three positions with various intervals. Further, the rear side frame portion 20d of the movable frame 20
Is a cylinder bed 6 or a bed body 5 connected to the cylinder bed 6.
It is configured to be movable while sliding on the upper surface of the. As shown in FIGS. 2 and 3, L-shaped attachment fittings 24 in a side view are fixed to the back side and the front side of the outer frame 22 of the embroidery frame 21, respectively. 24
As a result, the front frame portion 2 at the center of the movable frame 20 in the left-right direction
0c and the rear side frame portion 20d are detachably attached.

Next, a case where a tubular work cloth W such as a T-shirt is embroidered will be described with reference to FIGS. First, the outer frame 22 is inserted into the tubular work cloth W, the inner frame 23 is engaged with the outer frame 22 from the upper side, and the tubular work cloth W is set on the embroidery frame 21. The embroidery frame 21 is attached to the movable frame with the cylinder bed 6 inserted into the cloth W, and embroidery sewing is started. Therefore,
With the execution of the embroidery sewing, as shown in FIGS. 2 and 4,
The movable frame 20 to which the embroidery frame 21 is attached moves on the XY plane consisting of the X-axis direction and the Y-axis direction, and at the same time, the embroidery frame 21.
The work cloth portion below the cylinder bed 6 of the tubular work cloth W sandwiched between is also moved in the X axis direction and the Y axis direction at the same time.

At this time, the lower work cloth portion can be easily moved through the gap provided between the rear end of the support table 16 and the front end of the cylinder bed 6 and the gap on the support table 16. The embroidery sewing can be applied to the tubular work cloth W. Further, the back side and the front side of the embroidery frame 21 are arranged on the movable frame 20.
On the other hand, the rear side frame portion 20d of the movable frame 20 is supported by the cylinder bed 6 and the front side frame portion 20c.
Is supported by the support table 16 via the spacer member 17, the movable frame 20 and the embroidery frame 21 are always held at a predetermined position with respect to the support table without vibrating, and the sewing speed can be increased. . In addition, tubular work cloth W
Even if the thickness is thick, the embroidery frame 21 does not collide with the cylinder bed 6.

Here, as shown in FIG. 5, the support table 16 is not separately provided, and the table 15 is held at a position lower than the cylinder bed 6 by a predetermined distance to form a support table. The auxiliary tables 25 provided at the same height on both the left and right sides may be attached to the base frame 1 by the support member 19A, and the front frame portion 20c may be supported by the table 15 or the auxiliary table 25 via the spacer member 17A. . Also in this case, the same effect as that of the above embodiment can be obtained.

It is also possible to provide a plurality of small supporting tables 16 having a size corresponding to the moving range in which the spacer members 17 and 17A move in accordance with the movement of the movable frame 20. The spacer members 17 and 17A may be provided below the front frame portion 20c of the movable frame 20 over the entire length thereof. It is needless to say that the present invention can be applied to a multi-head embroidery machine provided with a plurality of embroidery sewing machines.

[0016]

As described above in detail, according to the embroidery machine of the first aspect, the support table is provided at a position lower than the movable frame on which the embroidery frame is mounted by a predetermined distance, while the front frame portion of the movable frame is provided. Since a spacer member for supporting the sewing machine on the support table is provided, the embroidery frame mounted on the movable frame is always held at a predetermined position with respect to the support table even when the movable frame is driven to move, thereby increasing the sewing speed. It can speed up. Further, since the support table is provided at a position lower than the movable frame by a predetermined distance, the work cloth portion below the embroidery frame can freely move on the support table when the embroidery frame holding the tubular work cloth is moved. It can be moved and embroidered on a tubular work cloth. Even if the tubular work cloth is thick, the embroidery frame and the cylinder bed do not collide with each other.

[Brief description of drawings]

FIG. 1 is a schematic perspective view of a multi-head embroidery machine.

FIG. 2 is a schematic vertical sectional side view of a main part of the multi-head embroidery machine.

FIG. 3 is a partially enlarged schematic perspective view of an embroidery frame in which a movable frame and a tubular work cloth are set.

FIG. 4 is a view corresponding to FIG. 3 when a movable frame moves on an XY plane.

5 is a view corresponding to FIG. 3 according to a modified example.

[Explanation of symbols]

 M Embroidery machine 1 Base frame 16 Support table 17 Spacer member 17A Spacer member 20 Movable frame 21 Embroidery frame

Claims (1)

[Claims] 1. A rectangular frame-shaped movable frame which is arranged on a base frame and is independently moved and driven by an X-axis drive mechanism and a Y-axis drive mechanism in an X-axis direction and a Y-axis direction which are orthogonal to each other. In the embroidery machine configured to detachably attach an embroidery frame that supports the work cloth to the movable frame, the embroidery machine is attached to the base frame lower than the movable frame by a predetermined distance. A support table for supporting the front frame portion of the movable frame, and a spacer member attached to the lower side of the front frame portion for supporting the front frame portion of the movable frame on the support table and slidable on the support table. An embroidery machine characterized by being equipped.