JPH0236460Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] A so-called gold button has a sewing hole, and the present invention relates to a button sewing machine for ring buttons having this kind of sewing hole.

[Conventional technology]

FIG. 5 shows a conventional button sewing machine. This is the fabric receiving plate 11 on the sewing machine table 2.
and a button holder 12 that holds the ring button 10 horizontally. The button holder 12 includes a button base 16b fixed to the fabric receiving plate 11, a holder main body 16a that holds the fabric 9 and the sewing ring 10b against the button base 16b, and a button presser 17 that holds the outer surface of the button from the side. It is made up of. The fabric receiving plate 11 and the button holder 12 are reciprocated from side to side while holding the ring button 10 and the fabric 9, and during this time the sewing needle 7 moves up and down to close the sewing ring 1.
Sew 0b onto fabric 9. In the figure, numeral 5 is a bobbin case, and 6 is a shuttle. This type of button sewing machine for ring buttons has been publicly known for some time (documents unknown).

[Problem that the invention attempts to solve]

As mentioned above, with conventional button sewing machines,
In order to hold the ring button 10 in a horizontal position, the button stand 16b has a height approximately half of the button diameter.
This necessitates sewing at a higher position than the original thread tightening position, which is at the same height as the fabric receiving plate 11. Therefore, the loop length of the needle thread formed when the sewing needle 7 descends to the bottom dead center is
For example, compared to normal sewing in which fabrics are sewn together, the length is twice as long as the height of the button base 16b, and the timing of thread tightening is also affected, ensuring that the thread is tightened. I had a problem where the buttons were shaky.

In addition, since the button stand 16b protrudes from the top surface of the sewing machine table 2, it is possible to adjust the position of the fabric 9,
There was also a problem in terms of workability, as it was difficult to insert and remove tubular fabrics such as sleeves.

[Purpose of invention]

This invention is intended to solve the above-mentioned problems, and its main purpose is to make it possible to reliably sew a ring button with good thread tightness.

[Means for solving problems]

The present invention provides a button sewing machine for ring buttons equipped with a fabric receiving plate 11 and a button holder 12.
The fabric receiving plate 11 is formed with a relief part 13 near the needle groove 15, which allows the lower half of the button body 10a to sink, and the button holder 12 has at least a relief part 13 that allows the button body 10a to sink into the button body 10a. It is required that a button presser 18 for holding the presser against the stepped wall 17 is provided.

FIG. 1 shows a specific embodiment of the relief portion 13, in which the fabric receiving plate 11 is formed into a crank-like stepped shape, and the stepped portion is the relief portion 13. In FIG. 4, the relief portion 13 is formed by a groove with a U-shaped cross section that opens upward. In this manner, the relief portion 13 is not subject to any restrictions on its cross-sectional shape or peripheral structure as long as it allows the button body 10a to sink into the relief portion 13.

[Effect of idea]

In the button sewing machine of the present invention as described above, when the ring button 10 is held in a sideways sewing position, the lower half side of the button body 10a is positioned within the relief part 13, and the shuttle 6
The sewing ring 10b can be sewn onto the fabric 9 near the original thread tightening position set on the basis of . In addition, in this state, the button body 10a is attached to the button presser 1.
8, the presser foot is held facing the stepped wall 17 of the relief part 13, so even when sewing a large number of buttons in succession, the individual button bodies 10a are held at the correct sewing position and can be sewn from front to back, left and right. There is no possibility of misalignment. Therefore, the ring button 10 can be securely attached with good thread tightness without causing any wobbling.

Compared to the conventional sewing machine in which the button stand 16b is fixed to the upper surface of the fabric receiving plate 11, the positioning of the fabric 9 and the insertion and removal of the cylindrical fabric can be easily performed, and work efficiency can be improved.

[First Embodiment] FIGS. 1 to 3 show a first embodiment of the present invention.

In the button sewing machine 1 of the present invention, the sewing machine table 2 is formed into a cantilever shape to allow fitting of a cylindrical sleeve 3, and its basic function is the same as that for conventional ring buttons.

For example, the sewing machine table 2 includes a bobbin case 5 for feeding out a bobbin thread and a shuttle 6, and a sewing needle 7 is driven up and down in synchronization with the reciprocating movement of the shuttle 6. A fabric receiving plate 11 and a button holder 12 are provided on the sewing machine table 2 to securely hold the fabric 9 and the ring button 10.
The fabric receiving plate 11 and the button holder 12 are reciprocated in the left-right direction toward the drawing by a drive mechanism not shown.

In the sewing machine 1 as described above, in the present invention, the fabric receiving plate 11 is bent to have a crank shape in cross section, and a relief part 13 is provided at the stepped part.

The step of the relief part 13 is set to be slightly larger than the radius of the button body 10a of the ring button 10, and the sewing ring 10b is connected to the upper wall 11 of the fabric receiving plate 11.
When supported through the fabric 9, the button body 10
It is possible to prevent the lower half of a from interfering with the fabric receiving plate 11. In other words, the upper wall 14 is at the optimum thread tightening position set with reference to the shuttle 6,
As a result, the escape part 1 is provided in a downwardly recessed state.
3, by sinking the lower half of the button body 10a, the ring button 10 can be set on the fabric receiving plate 11 in a horizontal sewing position. A needle groove 15 for the sewing needle 7 is provided in the upper wall 14 near the relief part 13 and extends from side to side.

The button holder 12 that fixes and holds the ring button 10 in the above-mentioned set position includes a holder body 16 that presses the sewing ring 10b and the fabric 9 against the upper wall 14 of the fabric receiving plate 11, and a holder body 16 that presses the button body 10a against the step of the relief part 13. A button presser foot 18 that holds the presser foot facing the wall 17
It consists of

The holder main body 16 and the button presser 18 can be switched between an operating position in which the ring button 10 is fixedly held and a standby position in which they are stopped at a position away from the ring button 10, and the holder body 16 and the button presser 18 can be switched between an operating position in which the ring button 10 is fixedly held and a standby position in which they are stopped at a position away from the ring button 10. When the button 10 is set at a predetermined position, it is operated to switch from the standby position to the operating position. The needle groove 1 of the fabric receiving plate 11 is also located in the holder body 16.
A needle groove 19 having the same shape as 5 is formed to pass through the top and bottom. Further, a pressing surface 20 for pressing down the sewing ring 10b is formed in the left half of the lower surface in a step-like shape.

The fabric receiving plate 11 is reciprocated left and right. In order to accommodate this reciprocating movement of the fabric receiving plate 11, the sewing machine table 2 connects the upper wall 2a and the lower wall 2b to the fabric receiving plate 1.
1 into a crank shape. A needle hole 22 is provided at a position directly below the sewing needle 7 near the left end of the upper wall 2a.

Next, we will explain the procedure for sewing several ring buttons (gold buttons) in a row on the sleeves as sleeve buttons.

First, as shown in FIG. 2, the sleeve 3 is positioned using a start position gauge attached to the sewing machine table 2, and the first button attachment position is located at the needle drop point. In this state, the ring button 10 is fed from the button feeder in a horizontal orientation and held by the button holder 12.

When the sewing machine 1 is started, the fabric receiving plate 11 and the button holder 12 are simultaneously and integrally reciprocated in the left-right direction, and during this time the sewing needle 7 moves up and down, and the sewing ring 1
Sew 0b onto fabric 9. FIG. 1 shows the case where the sewing needle 7 passes through the inside of the sewing ring 10b, and FIG. 3 shows the case where the sewing needle 7 passes through the outside of the sewing ring 10b.

When the preset number of stitches (9 to 36 stitches) have been sewn, the sewing machine stops and the button holder 12 is sewn.
is switched to the standby position, and the fabric 9 is fed to the next sewing position.

The ring button 10 is fed from the button feeder again and is fixedly held in the button holder 12.

Thereafter, sewing is carried out in the same manner as described above to sew the necessary number of ring buttons 10, and the work is completed by removing the sleeve 3 from the sewing machine table 2.

Note that the attitude of the button holder 12 may be changed automatically or manually.

[Second Embodiment] FIG. 4 shows a second embodiment of the present invention. In this case, the relief part 13 is a groove with a U-shaped cross section that opens upward, and the relief window 23 is provided in the sewing machine table 2 in correspondence with the left and right stroke of this groove. In this manner, the cross-sectional shape of the relief portion 13 can be set arbitrarily as long as it allows the button body 10a to sink. In some cases, an opening corresponding to the width of the groove may be formed in the surface of the flat material receiving plate 11 and this may be used as the escape part 13. In this embodiment, there is no need to provide a step on the sewing machine table 2.

[Another embodiment example]

In the above embodiment, it is assumed that the material 9 is fed to the next sewing position manually, but it is also possible to add a separate material feeding means to automatically feed the material.

Furthermore, it goes without saying that the present invention can be applied to sewing the front buttons (ring buttons) of suits and school uniforms, and can also be applied to buttons of the chain sewing method.

[Brief explanation of drawings]

Figures 1 to 3 show a first embodiment of the button sewing machine according to the present invention, in which Figure 1 is a longitudinal sectional front view of the main parts, Figure 2 is a plan view, and Figure 3 shows changes in the state. FIG. 1 is a longitudinal sectional front view equivalent to FIG. Fourth
The figure is a longitudinal sectional front view of main parts showing a second embodiment of the present invention. FIG. 5 is a longitudinal sectional front view showing a conventional example. 2... Sewing machine table, 9... Fabric, 10...
Ring button, 10a... Button body, 10b... Sewing ring, 11... Fabric receiving plate, 12... Button holder, 13... Relief portion, 15... Needle groove.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) In a button sewing machine for ring buttons, which is equipped with a fabric receiving plate 11 and a button holder 12, the fabric receiving plate 11 has a button in the vicinity of the needle groove 15 and below the button body 10a. A relief part 13 is formed to allow the half part to sink, and the button holder 12 is provided with at least a button presser 18 that presses and holds the button body 10a toward the stepped wall 17 of the relief part 13. Features a button sewing machine for ring buttons. (2) The button sewing machine for ring buttons according to claim (1) of the utility model registration claim, wherein the relief portion 13 is formed in a step-like shape. (3) The button sewing machine for ring buttons according to claim (1), wherein the relief portion 13 is formed in the shape of a groove that opens upward.