JP3338492B2 - Embroidery sewing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an embroidery sewing machine for a tubular embroidery object such as a sweater or a T-shirt.

[0002]

2. Description of the Related Art For example, in order to embroider a body of a T-shirt, it is necessary to position a tubular kettle bed having a built-in kettle inside a tubular body set in an embroidery frame. It is disclosed in Japanese Utility Model Publication No. 1-11751. As is clear from this publication, if the shirt is set on the embroidery frame with the front body positioned on the upper surface of the kettle bed, the body then hangs down from around the embroidery frame to below the kettle bed. ing. On the other hand, in recent years, as for individualization of fashion, so-called combination embroidery is increasing in embroidery. An example of a combination embroidery is a combination of normal multicolor embroidery and decorative embroidery to sew materials such as tapes and strings, which requires individual embroidery sewing machines with dedicated sewing heads. It had been. However, recently, an embroidery sewing machine dedicated to combination embroidery equipped with two types of sewing heads, that is, multicolor embroidery and decorative embroidery has appeared.

[0003]

In order to perform embroidery stitching on the tubular embroidery with the combination embroidery sewing machine, it is necessary to dispose the shuttle beds at the needle lower positions of two types of sewing heads. No. In addition, there is a demand that the two types of sewing heads be arranged as close as possible in order to reduce the amount of movement of the embroidery frame. Under such conditions, even if a combination embroidery is to be performed on a tubular embroidery object by one embroidery sewing machine, as described above, a part of the embroidery object hanging below the kettle bed is adjacent to the embroidery object. It interferes with the kettle bed.

An object of the present invention is to perform a combination embroidery on a tubular embroidery object without any trouble by a single embroidery sewing machine.

[0005]

In order to solve the above problems, an embroidery sewing machine according to the present invention is configured as follows. That is, in an embroidery sewing machine for a tubular embroidery object, the tubular embroidery objects are arranged close to each other so that embroidery sewing can be performed on an embroidery range of one embroidery frame on which the tubular embroidery object is set. Two or more sewing heads, one shuttle bed that can be shared by these sewing heads, and that is formed in a tubular shape corresponding to the tubular piercing object, and the shuttle bed is used for each of the sewing machine heads. There is provided a drive mechanism capable of controlling the movement of any of these sewing heads and the shuttle bed so as to correspond to any of them.

[0006]

In this structure, if the single shuttle bed and any one of the sewing machine heads are selectively positioned by the drive mechanism, embroidery sewing by the respective sewing machine heads is performed on the tubular embroidery object. Will be Therefore, it is possible to embroider two or more types of combination embroidery having different sewing styles on the tubular embroidery object with one embroidery sewing machine, for example.

[0007]

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a plan view showing a partially broken embroidery sewing machine, and FIG. 2 is a front view thereof. As apparent from these drawings, on the front surface of the sewing machine frame 12 extended in the longitudinal direction at the upper portion of the table 10, two sets of head pairs H each including two types of sewing machine heads 14, 16 are provided. I have. One sewing head 14 in this embodiment is for three-needle type multi-color embroidery, for example, capable of changing the color of a thread, and the other sewing head 16
Is for decorative embroidery that can be sewn with tape or the like. However, the sewing heads 14 and 16 in these head pairs H may be of the same type. For example, if both heads are multicolor embroidery heads, double color change of a single head pair H is possible with a single head. Further, the number of sewing heads constituting each head pair H may be two or more.

A base sash frame 2 is provided on the upper surface of the table 10.
0, and the base sash frame 20
Under the control of the frame drive units 26 and 28 attached to the side of the table 0, the frame drive units 26 and 28 are respectively operated to move in the X and Y directions in FIG. Note that two embroidery frames 24 are supported on the base sash frame 20 by support arms 22 so as to be located below the head pairs H, respectively. A tubular embroidery object K, such as a body of a T-shirt, is set in these embroidery frames 24 as described later.

FIGS. 3 and 4 each show a part of FIG. 1 in an enlarged sectional view. As is apparent from these drawings, the bed frames 18 provided slightly below the lower surface of the table 10 are provided with shuttle beds 30 at locations corresponding to the head pairs H, respectively. These kettle beds 30 are formed in a tubular shape so as to be able to enter the inside of a tubular embroidery object K set in the embroidery frame 24, and the base thereof is a guide rail 31 provided on the upper surface of the bed frame 18. Are movably mounted via a linear bearing 32. That is, each shuttle bed 30 can be moved to a position corresponding to one of the sewing machine heads 14 and 16 below each head pair H. In addition, as shown in FIG.
A shuttle 34 is incorporated into the inner end of the shuttle 30. A shaft 36 for rotating the shuttle 34 is rotatably supported on the inner wall of the shuttle bed 30. Further, the shuttle drive shaft 37 inserted orthogonally to the shaft 36 across each shuttle bed 30 is supported rotatably with respect to each shuttle bed 30 and positioned in the axial direction. . The shuttle drive shaft 37 and the shaft 36 can transmit rotation through a bevel gear pair 38.

FIG. 5 is a sectional view taken along line AA of FIG. The drive mechanism 40 for moving the shuttle bed 30 will now be described with reference to FIGS. 3 to 5. The inside of a box 41 provided at one end of the table 10 is as shown in FIGS. 3 and 4. A roller-shaped cam 43 having a spiral groove on the outer periphery is incorporated, and shaft portions 43a at both ends are rotatably supported on the wall of the box 41. The rotation axis of the cam 43 is set parallel to the moving direction of each of the shuttle beds 30, and
The shaft portion 43a is connected to a main shaft (not shown) of the motor 42 so as to receive rotation of a geared motor 42 provided outside the box 41. Similarly, inside the box 41, two guide shafts 46 are fixed in parallel with the rotation axis of the cam 43, and one slider 44 moves along the axis of the guide shaft 46 on these shafts. Assembled as possible. The slider 44 is provided with a cam follower 45 engaged with the groove of the cam 43.
0 is connected by a connecting shaft 47. Therefore, when the cam 43 is rotated forward and backward by the drive of the geared motor 42, the slider 44 reciprocates along the guide shaft 46, and in conjunction with this, each shuttle bed 30 moves along the guide rail 31. Become.

As shown in FIG. 5, a sewing machine motor 50 is disposed below the box 41, and the rotation of the drive pulley 51 is transmitted to an intermediate pulley 52 disposed in the box 41 through a belt a. It has become so. The intermediate pulley 52 can transmit the rotation to the pulley 55 of the sewing machine main shaft 54 through the belt b, and can transmit the rotation to the shuttle driving pulley 58 through another belt c. The hook drive pulley 5
Numeral 8 is rotatably supported on a bearing bracket 56 fixed in the box 41, and a spline shaft 62 is slidable along a spline bearing 60 fixed to the rotation axis. Has been inserted. The spline shaft 62 is arranged coaxially with the shuttle drive shaft 37, and both shafts 37, 62 are connected to each other by a connecting member 64 as shown in FIG. That is, the rotation of the shuttle drive pulley 58 drives the shuttle drive shaft 37 to rotate, so that the shuttle 34 incorporated in each shuttle bed 30 is driven via the shaft 36 and the bevel gear pair 38. Becomes And the driving mechanism 40
The movement of the kettle bed 30 by the
2 is allowed to slide with respect to the spline bearing 60 of the shuttle drive pulley 58.

FIG. 6 is a partially broken perspective view showing a state in which a tubular embroidery object K such as the body of a T-shirt is set in the embroidery frame 24, and FIG. 7 is a front view thereof. I have. As apparent from these drawings, the embroidery object K is set by the inner frame 24a and the outer frame 24b of the embroidery frame 24 so that, for example, the front body is located on the upper surface of the needle plate 30a in the shuttle bed 30. . And the kettle bed 30 is the embroidery K
And the needle hole 30b of the needle plate 30a is located at a position below the needle of one of the needle bars 17 of each of the sewing heads 14 and 16 constituting the head pair H.
Are held at corresponding positions.

Next, embroidery sewing by the embroidery sewing machine will be described. When the cam 43 is rotated by driving the geared motor 42 in the drive mechanism, the operation of the slider 44 described above is transmitted to the shuttle bed 30 through the connection shaft 47. This controls the movement of each shuttle bed 30 along the shuttle rail 34 and the shuttle drive shaft 37 along the guide rail 31. By this control, the shuttle bed 30 under each head pair H is moved to a position corresponding to one sewing head 14 as shown in FIGS. 1 to 3 or a position corresponding to the other sewing head 16 as shown in FIG. Moved selectively. Then, when the start switch of the sewing machine is turned on, the shuttle 34 of the shuttle bed 30 and each of the sewing heads 14 and 1 are driven based on the drive of the sewing machine motor 50.
The heads selected from 6 start sewing operations, respectively, and the base sash frame 20 is controlled to move in the X and Y directions in FIG. 1 by the frame drive units 26 and 28 based on predetermined embroidery data. . Thus, embroidery sewing is performed on the embroidery object K set in each embroidery frame 24. If the sewing heads 14 and 16 of each head pair H have different sewing types, two types of combination embroidery are performed on the embroidery object K by selectively using these sewing heads.

In the present embodiment, the head pair H is fixed and the shuttle bed 30 is moved. On the contrary, the shuttle bed 30 is fixed to the bed frame 18 to constitute the head pair H. Sewing machine heads 14 and 1
A configuration in which 6 is movably attached to the sewing machine frame 12 is also possible. In this case, similar to the spline bearing 60 and the spline shaft 62 connecting the shuttle drive shaft 37 and the shuttle drive pulley 58, the sewing machine main shaft 5
4 and a pulley 55 may be slidably connected to each other to allow the movement of each of the sewing machine heads 14 and 16.

[0015]

As described above, according to the present invention, the combination embroidery on the tubular embroidery object can be realized by one embroidery sewing machine without any trouble.

[Brief description of the drawings]

FIG. 1 is a plan view showing a partially broken embroidery sewing machine.

FIG. 2 is a front view showing the embroidery sewing machine.

FIG. 3 is an enlarged sectional view of a part of FIG.

FIG. 4 is an enlarged sectional view of a part of FIG.

FIG. 5 is a sectional view taken along the line AA of FIG. 3;

FIG. 6 is a perspective view showing a state in which a tubular embroidery object is set in an embroidery frame;

FIG. 7 is a front view of the embroidery object set in the embroidery frame.

[Explanation of symbols]

 14, 16 sewing machine head 24 embroidery frame 30 shuttle bed 40 drive mechanism K tubular embroidery

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) D05C ^7/ 00-7/12 D05B 1/00-83/00

Claims (1)

(57) [Claims] 1. An embroidery sewing machine for a tubular embroidery object, wherein the embroidery sewing machines are arranged so that embroidery sewing can be performed on an embroidery range of one embroidery frame on which the tubular embroidery object is set. Two or more sewing machine heads arranged, one shuttle bed that can be shared by these sewing heads, and that is formed in a tubular shape corresponding to the tubular piercing object; An embroidery sewing machine, comprising: a drive mechanism capable of controlling the movement of one of the sewing machine head and the shuttle bed so as to correspond to one of the sewing machine heads.