JPH0246853Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to a holding structure for holding the cuff at a predetermined position relative to the needle when sewing buttons onto the cuff of a suit, etc.

[Prior Art] Conventionally, this type of structure is shown in FIGS. 6 to 8.
There is one shown in the figure.

In the figure, 1 is a support base fixed to an X-Y moving table (not shown), 2 is a tongue mounting base provided on this support base 1, and a roller 2a is attached to the bottom surface of the tongue mount base. It is possible to move in the left and right directions in Figure 6). 3 is this tongue mounting base 2
with the tongue support plate engaged with the fixing screws 3a, 3.
Loosen adjustment screw 2b (see Figure 7).
By rotating , it is possible to move in the left and right directions in FIG. Reference numeral 4 denotes a tongue connected to the tip of the tongue support plate 3 so as to be rotatable only in an upward direction, and the tip of the tongue is formed thin.

Further, this tip portion 4a is formed with a cutout portion 4a1 (see FIG. 7) depending on the type and shape of the button to be sewn. Here, a notch shaped to fit a two-hole button is shown. Reference numeral 5 denotes a fabric holder provided in front of the support stand 1 (on the left in FIG. 6); 6 is a throat plate fixed to the front end of the fabric holder 5; the tip of the needle plate has a fabric holder protruding upward; A contact portion 6a and a cutout portion 6b are formed in accordance with the type and shape of the button. Reference numeral 7 denotes a dough presser lever connected to the support base 1 so as to be rotatable around a shaft 8; 9, 10, and 11 are stoppers; 12 is a stopper stand for holding the stopper 11; 13 is the dough presser lever 7 connected by a spring 14; This is a lever that pushes the rear part of the machine upward.

In the above configuration, when setting the cuffs, insert the sleeve W into the tip 4a of the tongue 4 in the state shown in FIG. Fold along. Then, while holding this state with one hand, rotate the tongue 4 downward, push the tongue mount 2 forward with the other hand, and insert the part of the sleeve W located at the tongue tip 4a onto the protruding part of the throat plate 6. Press it against 6a. As a result, the sleeve W is held between the tongue tip 4a and the throat plate 6. In addition, the tongue 4 is
Since the stoppers 10 and 11 engage with each other, the sleeve W is fixed in a sandwiched state. Also, at this time, due to the upward pressing force of the lever 13, the stepped portion 7a of the fabric presser lever 7 engages with the roller 2a, and in conjunction with this, the fabric presser 7 presses the sleeve W, completing the setting operation. . After the setting is completed, the button B held on the chuck member T is sewn onto the sleeve W by moving the tongue mounting base 2 together with the X-Y moving table.

[Problems to be solved by the invention] However, in the case of the cuff holding tongue in the conventional button sewing machine, when positioning the button attachment point of the sleeve W at the tip 4a of the tongue 4, it is necessary to As shown in FIG. 8, the part Wa1 gets caught on the side edge of the tongue 4, making it difficult to insert the sleeve W into the tongue 4, resulting in a decrease in work efficiency. In addition, wrinkles occur on the sleeve W due to the cuff wa being slanted, which may cause the attachment position to shift, or the button to be sewn on without the wrinkles being completely smoothed out, causing ripples around the attachment point. This caused some inconvenience and made it impossible to obtain high-quality products.

This invention was created by focusing on the above-mentioned problem, and it is possible to easily position the tip of the tongue at the button attachment point on the sleeve without causing wrinkles on the sleeve. The purpose is to provide tongues.

[Means for Solving the Problems] In this invention, a recess for sleeve insertion is formed in the tongue, and the tongue can be rotated from front to back with respect to a support base.

[Function] In this invention, since the tongue is formed with a recess for inserting the cuff, even if the sleeve is inserted from the side of the tongue, the lower end of the sleeve will fit into the recess and will not be pulled toward the side of the tongue. , no wrinkles will occur. Also, by reversing the tongue,
The sleeve can be inserted from either the left or right direction.

[Example of the invention] Hereinafter, an example of this invention will be shown in Figures 1 to 5.
This will be explained based on the diagram. Note that the same or equivalent parts as in the conventional example are given the same reference numerals, and detailed explanation thereof will be omitted.

In the figure, reference numeral 20 denotes a support fixed to an X-Y moving table (not shown), and 21 denotes a tongue mount, which is movably fitted into the groove 20a of the support 20. 22 is a cylinder part 22a and a mounting part 22
b, and the mounting portion 22b is a tongue support member made of
is fixed to the groove 20a of the tongue mount 20 by fixing screws 23a and 23b.

Further, this support member 21 can be moved in the front-back direction by loosening the fixing screw of the mounting portion 22b and rotating an adjustment screw 21b provided at the rear of the mounting base 21. 24 is a tongue having a curved shape. The tip 24a of the tongue 24 has a thin groove shape that is the same on both sides, and has a notch 24a1 corresponding to the type and shape of the button B. Furthermore, a cylindrical portion 24b is provided at the lower end of the tongue 24. This cylindrical part 24b
A locking member 25 having a shaft body 25a projecting downward is rotatably engaged with the inner wall of the housing.

Then, the shaft body 25a is fitted into the cylindrical portion 22a of the tongue support member 22, and is integrally locked with a screw 22a1. The shaft body 25a is provided at a position where an extension of its central axis coincides with the center line of the tip. Moreover, the cylindrical part 24b
A stepped portion 24b2 is formed on the inner surface 24b1 of the locking member 25 to restrict the rotation of the locking member 25 within a range of 180 degrees, so that the tongue 24 is held horizontally and the shaft body is removed from the holding position. It can be reversed around 25a. Note that the other configurations are the same as those of the conventional example.

Next, the effect will be explained.

When inserting the tip of the tongue inside the sleeve W,
The worker first determines whether the sleeve W to be set is the right sleeve or the left sleeve. If the sleeve is on the right side, the tongue 24 is positioned as shown in FIG. 3a. Then, holding the button attachment point of the sleeve W forward, insert it into the tongue tip 24a from the right side of the tongue 24. At this time, the cuff Wa
Since the rear end Wa1 is inserted into the recess 24c of the tongue 24 having a curved shape, the rear end Wa1 is completely inserted into the recess 24c of the tongue 24.
You won't get caught up in 4. Therefore, the insertion work and positioning work of the sleeve W can be performed extremely smoothly. In addition, since no unreasonable force is applied to the cuff Wa, the sleeves are not wrinkled, and problems such as misalignment of the button installation position and ripples at the button sewing area are suppressed, resulting in a good sewing result. You can get quality.

On the other hand, if the sleeve W to be set is the left sleeve, the tongue 24 is reversed from the state shown in FIG. At this time, the tip 24a of the tongue 24 is turned inside out based on its central axis, and since the shape of the tip 24a is the same on both sides, the throat plate 6
The positional relationship between the two sleeves is exactly the same, and the gripping state of the sleeve W is no different from that shown in FIG. 5a.

By the way, the reason why the insertion direction of the sleeve W is changed depending on whether the sleeve W is on the right side or the left side is as follows.

In other words, the button sewing area of the sleeve W is usually
A folded portion W1 as shown in FIG. 4 is formed, and the direction in which the folded portion W1 is formed determines whether it is a left sleeve or a right sleeve. If the left sleeve is inserted from the right side and the right sleeve from the left side, contrary to the above case, the sandwiched state between the throat plate 6 and the tongue 24 will be as shown in FIG. 5a. In other words, since the folded portion W1 rises with considerable force, the button B and the fabric are easily misaligned, and in this type of sewing, which requires high precision, not only is proper sewing not performed, but the needle Problems such as bending or damage to the button B occur. On the other hand, when the right sleeve is inserted from the right side and the left sleeve is inserted from the left side, the folded part W1 of the sleeve W is pressed by the throat plate 6, as shown in FIG. 5b.
Moreover, since the fabric presser reliably presses the fabric, the button B and the fabric will not be misaligned, and sewing operations can be performed properly.

In this embodiment, by inverting the tongue 24 as described above, the sleeve can be inserted into either the left or right sleeve from the appropriate direction, and a good set state can be obtained.

[Effects of the invention] As explained above, according to this invention, the tip of the tongue can be easily positioned at the button attachment point on the sleeve without causing wrinkles on the sleeve, greatly improving work efficiency and product quality. This has the effect that it can be improved.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an embodiment of this invention, Fig. 2 is an exploded perspective view showing the connecting structure of the tongue and support member shown in Fig. 1, and Fig. 3 is a use of the device shown in Fig. 1. Figure 4 is a front view showing the state, Figure 4 is a perspective view showing the folded part of the sleeve, Figure 5 is a side view showing the sleeve being clamped in the sleeve shown in Figure 1, and Figure 6 is the conventional buttoning. FIG. 7 is a side view showing the cuff tongue of the sewing machine, FIG. 7 is an enlarged perspective view of the main part of the sewing machine shown in FIG. 6, and FIG. 8 is a plan view showing the state of use of the sewing machine shown in FIG. 6...Throat plate, 24...Tang, 24a...Tang tip, 24c...Tang recess, W...Sleeve,
Wa...cuffs, B...button.

Claims (1)

[Claims for Utility Model Registration] A tongue that is installed on a support stand movable in the X-Y direction and has a tongue tip formed at the tip to hold a piece of cloth by bending it, and a button attached to the cloth held at the tip of the tongue. In a button sewing machine that sews buttons onto cloth using a needle that is inserted vertically through the tongue, a cylindrical recess for inserting a sleeve is formed in the tongue, and a recess for inserting a sleeve into the tongue is attached to the tongue support base. A cuff holding tongue for a button sewing machine, characterized in that the cuff holding tongue is rotatably supported so that it can be turned inside out.