JPS6143462B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a device for sewing string-like members of a sewing machine, and is a device that can automatically and continuously sew these materials onto fabric. It is related to. In particular, it can be used as a device for a multi-head embroidery sewing machine.

Conventionally, when sewing string-like members such as tapes and cords onto fabric using a sewing machine, this has been done manually. In particular, when sewing string-like members onto cloth so that they are not flat but at a certain angle, manual work was required, requiring a high level of skill and skill.

In a so-called tape sewing machine that sews this kind of string-like member onto fabric, a known needle bar drive device,
It is equipped with a balance drive, a cylinder and bobbin rotation drive, and a cylinder lifting device. For details of this type of sewing machine, the applicant has
No. 94661, Patent Application No. 1982-205281 (November 22, 1981)
(Japanese application)].

In the invention of the present application, the above-mentioned Japanese Patent Application No. 57-205281
This is a device that employs the embroidery sewing machine described in the above issue and is devised to automatically and continuously sew string-like members onto fabric.

To summarize, a bobbin wound with material to be sewn is rotatably attached to the outside of a rotating cylinder of a sewing machine, and a string-like member is fed out from the bobbin in synchronization with the rotation of the cylinder and bobbin. A string-like member is provided at the lower end of the cylinder nipple to hold the needle at a predetermined angular position relative to the fabric and automatically sew the needle continuously onto the fabric using a sewing thread attached to a needle that moves up and down. can be sewn at any desired angle to the plane of the fabric, for example in the longitudinal direction.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a sewing machine to which a device of the present invention is attached will be described below with reference to the accompanying drawings.

The attached FIG. 1 is a longitudinal cross-sectional view of the sewing machine, showing the parts other than the bobbin in which the string-like member is wound and housed.

The cylinder 2 consists of an inner cylinder part 4, a nipple main body 6 screwed to the cylinder part 4, and an outer cylinder part 8 which fits over the two members.

A bobbin 10 that winds and accommodates the string-like member γ is rotatably supported by a protruding arm portion 12 fixed to the outer periphery of the cylinder outer cylindrical portion 8.

An annular retaining ring 14 is attached to the lower end of the cylinder outer cylindrical portion 8.
is fitted, and a retaining nut 16 is screwed underneath. Further, a vertical groove 18 is bored on the outer periphery of the nipple body 6, and a nut 2 is provided so as to reach this groove 18.
0 is inserted through the retaining ring 14 and screwed onto the outer cylinder portion 8.

A cylinder lifting ring 24 having an annular groove 22 approximately in the center is fixed to the end of the cylinder inner cylindrical portion 4. Reference numeral 26 is a sleeve disposed between the machine frame F and the cylinder inner cylindrical portion 4. The needle bar 28 with the needle 27 attached to the lower end is inserted into the through hole 3 of the cylinder inner cylindrical portion 4.
0 and the nipple body 6 are provided so as to be movable up and down within the cavity 32. The needle bar 28 has a through hole 34 formed therein, into which the needle thread α passing through the needle hole 36 is inserted from above.

When the cylinder lifting ring 24 is lifted upward by a separately provided known cylinder lifting device, the cylinder inner cylindrical portion 4 and the nipple 6 are moved and locked upward together with the cylinder lifting ring 24, and the locking nut 20 is Since the end portion is pulled up along the vertical groove 18 and slid by a predetermined distance, the cylinder inner cylindrical portion 4 and the nipple 6 can be easily moved up and down, creating a desired gap between the nipple 6 and the table 38. It can hold the embroidery frame 40 and the fabric 4.
The work of replacing the second class becomes easier.

Further, the operation of the known cylinder and bobbin rotating device is performed by a cylinder gear 44 provided at the end of the cylinder outer cylindrical portion 8.
This movement is transmitted to the cylinder outer cylinder part 8, the cylinder inner cylinder part 4, the nipple body 6, the retaining ring 14, the retaining nut 16, and the bobbin 10 attached to the outside of the outer cylinder part 8. The needle bar 28 is integrally moved to rotate around the outer periphery of the needle bar 28.

The needle bar 28, together with the needle 27 to which the needle thread α is attached, is moved up and down within the hole 30 of the cylinder inner cylindrical portion 4 and the cavity 32 of the nipple by a known needle bar drive device, thereby regulating the loosening of the needle thread α. In cooperation with a known balance drive device, as will be described later, a guide groove 66 of the guide base 54 provided at the end of the nipple 6, a through hole provided in the guide base leg 57 and the protrusion 7 of the nipple body are formed. 62, 9, and pulls up the bobbin thread β wound around the hook 46 provided below the table 38 and entangles it with the bobbin thread β.
A lock stitch is formed on a fabric 42 attached to a embroidery frame 40 movable in the X and Y axis directions by a drive device provided separately at the top. At this time, the string-like member γ, that is, the tape, pulled out from the bobbin 10 is sewn onto the upper surface of the fabric to perform so-called taping.

The above is an overview of the structure and operation of a sewing machine that employs the sewing device of the present invention.

Next, a device for sewing a string-like member, such as a tape, according to the present invention will be explained.

FIG. 2 of the accompanying drawings is a side view of a guide portion 50 for sewing a string-like member such as a cord. FIGS. 4 to 8 illustrate the state in which this guide portion 50 is attached to the cylinder nipple body 6 via the guide portion base 54. The upper end portion 52 of the cylinder nipple main body 6 is connected to the cylinder inner cylindrical portion 4 described above.
A guide base 54 is removably provided at the lower end of the guide base 54. Guide part base 5
4 integrally connects the nipple body 6 with its arm portion 56.
A leg portion 57 formed perpendicularly to the arm portion 56 is fitted onto a protrusion 7 provided on the nipple body 6, and is inserted into a through hole 6 provided on the leg portion 57.
2 and a through hole 9 provided in the main body protrusion 7 communicate with each other. Further, a groove 66 is provided in the lower end protruding piece 64 of the leg portion 57 in the needle drop direction. (See Figures 3 and 11).

Further, adjusting screws, for example, a pair of hexagonal screws 70 are fitted into the holes 68 bored on both sides of the guide base 54, and the screws 70 are inserted into the holes 68 of these threaded portions.
By screwing them together, the guide base 54 is fixed to the nipple main body 6.

Next, the guide section 50 serves as a guide when a cord-like member, for example, a cord T, wound around the bobbin 10 is pulled out, passed through, and sewn to a desired location on the fabric. An arm part 74 to be screwed 72 to the part 56, a slit-like entrance hole 76 for the string-like member T to enter smoothly, and a guide hole having a gap large enough to guide the string-like member that has entered the interior and allow it to pass smoothly. 78 and a vertical groove 79 for vertical movement of the needle (second
figure).

The string-like member T guided by the guide part 50 is the fifth
It moves in the direction of the arrow in the guide part 50 in a state substantially hanging down from the fabric to be sewn, as shown by the phase image line in FIG. The end E in contact with the fabric of the string-like member T, which is vertically positioned so as to stand up against the fabric 42 attached to the moving embroidery frame 40, continuously threads the upper thread α and the lower thread β. An appropriate pattern can be created by sewing with (Fig. 10). Therefore, the string-like member T is sewn to the fabric 42 so as to rise vertically at a desired angle.

In the present invention, the guide portion is configured so that the string-like member can be sewn while being held in a substantially vertical position relative to the surface of the fabric, and the guide portion is configured so that the string-like member can be sewn to the fabric surface in a substantially vertical position. Coupled with the ability to move freely in a desired direction by actuation, various types of so-called corded stitches can be easily created.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view of the main parts of the sewing machine used to carry out the present invention, excluding the bobbin. FIG. 2 is a side view of the cord sewing guide section. Figure 3 is a side view of the guide base. Figure 4 is a side view of the guide base and guide part attached to the cord sewing nipple. Figure 5 is a side view of Figure 4 viewed from the direction of arrow A, Figure 6 is a bottom view of Figure 4, Figure 7 is a side view of Figure 5 viewed from the direction of arrow B, and Figure 8 is a side view of Figure 4 viewed from the direction of arrow A. FIG. 5 is a rear view, and FIG. 9 is a schematic perspective view showing the relationship between the needle drop and the sewing string member. FIG. 10 is a plan view showing the state in which the string-like member is sewn onto the fabric. 1st
Figure 1 is a cross-sectional view of the guide base attached to the cylinder. 2 is a cylinder, 6 is a nipple, 7 is a nipple protrusion, 8 is a cylinder outer cylinder, 9 is a through hole, 10 is a bobbin, 27 is a needle, 28 is a needle bar, 40 is a pricking frame, 42 is a fabric, 54 56 is the guide base arm, 57 is the guide base leg, and 62 is the guide base.
64 is a through hole, 64 is a lower end protrusion, 66 is a vertical groove, 76 is a slit-like entrance hole, 78 is a guide hole, and T is a string-like member.

Claims (1)

[Scope of Claims] 1. In a needle sewing machine equipped with a cylinder in which the outer periphery of the needle bar can be freely rotated, a nipple provided at the end of the cylinder, and a bobbin protruding from the outer cylindrical part of the cylinder, a guide part base attached to the nipple A guide portion is provided for holding and guiding the string-like member in a substantially vertical position with respect to the member to be sewn, and the string-like member is sewn to the surface of the member to be sewn in a substantially vertical position. A cord-like member sewing device for a sewing machine. 2. Claim 1 having a guide portion having a slit-like entrance hole and a guide hole that allows the string-like member to pass through in a vertical position to the fabric to be sewn.
A string-like member sewing device for a sewing machine as described in 2. 3. An arm part that is detachable from the side surface of the nipple, a leg part that fits onto a protrusion provided on the nipple, a through hole that communicates the nipple and the leg, a protrusion protruding from the leg part, and a protrusion provided on the protrusion part. A cord-like member sewing device for a sewing machine according to claim 1, having a guide base having a needle guide groove.