JPS63115588A - Stitch split sewing machine - Google Patents

Abstract

(57) [Abstract] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to a split-stitch sewing machine for sewing the side edges of slacks, jackets, etc., for example.

(Prior art) As a conventional split-stitch sewing machine, for example,
No. 28515, Japanese Unexamined Patent Publication No. 127853/1984, etc. have already been proposed.

As shown in FIG. 12, these devices sew the upper fabric 1 and the lower fabric 2 together (i.e., side stitch), and then sew the upper fabric 1 and the lower fabric 2 together. The side seam portion can be sewn by folding back the sections 1a and 2a so as to open them, and then making a crease 3 along the folding line.

However, in these conventional devices, after folding the side-stitched seam allowances 1a and 2a in opposite directions, a heating puller heated by an electric heating element (heater) is used to form a crease 3 along the folding line. Alternatively, an ironing member such as an iron is brought into pressure contact with the cloth, and its heating action imparts an ironing effect to the folds 3.

(Problems to be Solved by the Invention) In the conventional device described above, since the iron member is heated by an electric heating element, it takes a long time to heat the iron member to the operating temperature at the start of sewing, and also takes a long time to dissipate the heat at the end of GI sewing. There were problems in that the hat took a long time, it was difficult to control the temperature, and the workability was very poor.

In addition, during sewing work or when cleaning the cloth after sewing, the electric heating element and ironing member are in a heated state, so the worker's fingers may come into contact with them and get burnt, or the cloth may come into contact with them. It is predicted that if the fabric is left in contact with the fabric for an unnecessarily long period of time, the fabric may become scorched, or in extreme cases, it may cause a fire, which poses a problem in terms of safety in use.

SUMMARY OF THE INVENTION An object of the present invention is to solve the problems in the conventional techniques described above and to provide a split-stitch sewing machine with excellent workability and safety.

(Means for Solving the Problems) The present invention, which is intended to solve the problems in the conventional techniques described above, has a sewing machine body that sews an upper fabric and a lower fabric together with a seam allowance for both sides immediately after the sewing. The splitting sewing machine is equipped with a guiding means that sequentially guides in a folded manner in opposite directions as the suture moves, and furthermore, an ultrasonic generator is provided in the main body of the sewing machine, and the tip of the output bone of the device of,
The gist of the configuration is that it is oriented so as to be able to come into contact with the return line of both cities immediately after being bent by the guiding means.

(Function) According to the above-described means, immediately after the upper fabric and the lower fabric are sewn together by the operation of the sewing machine, the seam allowances of both sides are sequentially folded in opposite directions by the guiding means as the stitching moves. Immediately after being guided and folded back, the ultrasonic vibration of the output bone of the ultrasonic generator is applied along the folding line, and the cloth itself in contact with the output horn generates heat, which causes ironing. The effect adds creases.

(Example) An embodiment of the present invention will be described below with reference to the drawings.

The explanation is shown in Figure 1, which shows a perspective view of the main parts of the split sewing machine, Figure 2, which shows a side view of the main parts with the front end of the bed of the sewing machine partially cut away, and Figure 2, which shows the main parts of the sewing machine in a side view. The process will proceed based on FIG. 3, which shows a plan view of the vicinity of the throat plate, and FIGS. 4 to 7, which show various cross sections of FIG. 3.

The split sewing machine includes a sewing machine main body 6, a guiding means 7 provided around the throat plate 10 and presser foot 11 of the sewing machine main body 6, and an m-sound wave generating device 8 provided at the tip of an arm 12 of the sewing machine main body 6. It consists of

The sewing machine main body 6 is a linear lockstitch sewing machine, and the upper cloth 1 and the lower cloth 2 are sewn together in a straight line.

The presser foot 11 attached to the lower end of the presser bar 14 is configured to move the seam allowance 1a of both sides 1 and 2 by the guide means 7 (described later).
A dedicated device is employed to assist in the guidance of 2a. That is, the throat plate 10 has a needle hole 17 through which the sewing needle 16 moves up and down;
Feed I! on the feed table 18A that performs the feed motion by the feed mechanism (not shown) of the sewing machine main body 6 on the left side of the nail hole 17! Groove portion 19 where the pair of left and right tooth portions 18a of a18 appear and retract
and an opening 2 that is continuously opened rearward from the groove 19.
0, and a notched recess 21 formed on the right side of the needle hole 17 and whose rear part is continuous with the opening 20.

Further, the presser foot 11 is attached to the lower end of the presser bar 14 with a presser clamping screw 22, and has a cloth presser portion 23 at its lower end. The peripheral cloth presser part 23 has a semicircular sub-groove 24 on its right side through which the sewing needle 16 moves up and down, and its lower surface is arranged opposite to the groove part 19 of the throat plate 10 . A presser tongue piece 25 is protruded rearward from the right rear end portion of the cloth presser portion 23. Further, on the lower right side of the presser foot 11, a cutout surface 26 having a substantially circular arc shape is formed.

Next, the guiding means 7 will be explained in detail. The guidance means 7 is for guiding the seam allowances 1a and 2a of the two stitches 1 and 2 immediately after sewing by the sewing machine main body 6 in a folded manner in opposite directions one after another in accordance with the movement of the sewing. It is roughly divided into a lower cloth folding member 7 days and an upper cloth folding member 7C.

The heavy punishment member 7A is formed in the shape of an L-shaped plate, is attached to the upper surface of the right rear portion of the throat plate 10 with a mounting screw 27, protrudes forward from the left end thereof, and is attached to the presser foot 11. It has a heavy punching part 28 adjacent to the right side of the presser foot part 23 and the presser tongue piece 25. The front end of the heavy-duty portion 28 is shaped like a square whose thickness decreases toward the tip. The heavy punching part 28 of the heavy punching member 7A is connected to the sewing machine main body 6.
With the movement of the fabric fed out in conjunction with the stitching by the feeding mechanism (this movement is referred to as stitching movement of the fabric),
It intervenes relatively between the seam allowances 1a and 2a of the sewn fabrics 1.2, and moves the seam allowances la and 2a in opposite directions.
That is, the seam allowance 18 of the upper cloth 1 is guided upward, and the seam allowance 1b of the lower cloth 2 is guided downward (see FIGS. 8 and 9). Note that the protruding bottle 30 on the throat plate 10 is inserted into the horizontally elongated hole 29 of the heavy punishment member 7A.

Further, the lower cloth folding member 7B is integrally formed on the lower surface of the heavy punching portion 28 of the cloth splitting member 7A. The lower cloth folding member 7B has a substantially rectangular plate shape, a support portion 781 at its left end protrudes to the left, and has a chamfered guide slope 31 at its left end. Lower cloth folding member 7B
The guide slope 31 folds back and guides the seam allowance 2a of the lower cloth 2 guided by the heavy chamfer 447A (see FIG. 9). That is, the seam allowance 2a of the lower cloth 2 held by the upper cloth 1 is first bent downward by the action of the guide slope 31, and then folded back and guided to the upper surface of the support portion 781. In order to facilitate folding of the seam allowance 2a of the lower cloth 2, it is desirable to chamfer the front edge of the lower cloth folding member 7B and the guide slope 31.

The upper cloth folding member 7C is made by bending a wire material, and its upper end bent into a substantially inverted U shape is attached to the upper left side surface of the presser foot 11 together with the presser clamp screw 22. It is attached by mounting screws 32. Upper cloth folding member 7
The lower part of C extends obliquely downward to the right and forward while bypassing the rear of the cutout surface 26 of the presser foot 11, and its tip part applies its own elasticity to the upper surface of the heavy punishment member 7A. The guide portion 33 is brought into contact with the guide portion 33. The guide portion 33 of the upper cloth folding member 7C folds back and guides the seam allowance portion 1a of the upper cloth 1 guided by the heavy punishment member 7A (eighth
(see figure).

Next, the ultrasonic generator E8 will be described. The ultrasonic generating device 8 is used to create a crease 3 along the folding line of the seam allowance portions 1a and 2a folded back by the folding members 7B and 7C. It is supported by the distal end of the arm 12 of No. 6 via a support device 9, which will be described later. As is well known, the ultrasonic generator 8 includes a high-frequency oscillator that generates vibrations, a co-imaging type magnetostrictive vibrator that converts the vibrations into ultrasonic vibrations, and transmits and increases the amplitude of the ultrasonic vibrations. and an output horn 8A. Note that a high frequency oscillator, a vibrator, and the like are built into the container body 34, and the output horn 8A is protruded from below the container body 34.

Next, regarding the support device 9 of the ultrasonic generator 8, the tenth
This will be explained with reference to the figure.

A substantially U-shaped support 3 is attached to the back of the tip end of the arm 12 of the sewing machine body 6 via a mounting bracket 36.
7, a lifting cylinder 38 consisting of an air cylinder installed vertically on the upper surface of the upper part of the support 37, and the support 3.
A guide shaft 42 is provided vertically on the support body 37 by screwing together the screw portion 41 of the knob portion 40 at the lower end with the lower piece of the guide shaft 42, and a guide shaft 42 is provided on the guide shaft 42 so as to be movable up and down. An elevating table 43 to which a telescopic rod 39 protruding downward from a cylinder 38 is coupled, and a vessel body 34 of the ultrasonic generator 8 rotatably supported on the side surface of the elevating table 43 via @44.
A fixing screw 47 that fastens the holder 45 to the lifting table 43 through an arc-shaped opening hole 46 centered on the shaft 44 of the boulder 45, and a fixing screw 47 that is wound around the guide shaft 42 and that It is composed of a spring 48 interposed between the end surface of the threaded portion 41 of the knob portion 40 and the lower surface of the lifting table 43. Therefore, the container 34 of the ultrasonic generator 8 is
By the telescoping operation of the lifting cylinder 38, it is raised and lowered together with the lifting table 43, and the installation angle of the container body 34 is determined by once loosening the fixing screw 47 and moving the holder 45 through the shaft 44.
The adjustment can be made as appropriate by rotating the fixing screw 47 and tightening the fixing screw 47 again. Note that a projecting piece 43a that slides along the longitudinal hole 37a of the support body 37 is provided on the lifting table 43 in a protruding manner.

Thus, the lower end (tip) of the output horn 8A of the ultrasonic generator 8 is placed at a position adjacent to the rear of the feed dog 18, and the folded portion 1 of the cloths 1 and 2 to be sewn and moved.
Press a, 2a. Further, the feed bar 1 of the feed dog 18
8A, there is an anvil 4 corresponding to the output horn 8A.
9 is installed adjacent to the rear of the feed dog 18. This anvil 49 is connected to the folded portions 1a and 2a of the cloth 1.2 between the tip of the outlet j horn 8A when the feed dog 18 feeds the cloth.
(see Figure 7). In addition, the tip of the output horn 8A is formed in an inverted shape, and the cloth 1 on the anvil 49
, 2 are brought into contact along the folded portions of the folded portions ia and 2a. On the other hand, the anvil 49 is formed in an L-shape corresponding to the shape of the tip of the output horn 8A. With this image shape, the entire folding group of the seam allowances 1a and 2a of the cloth 1.2 is processed uniformly.

Further, the output horn 8A of the ultrasonic generator 8 has an 11th
As shown in the figure, a water supply channel 50 capable of supplying water is formed at its tip. The inside of the water supply channel 50 is filled with a water supply member 51 such as cotton or fiber, and the upper end thereof is communicated with a water supply tank 53 via a communication pipe 52. In addition,
The water supply tank 53 is installed on a thread winding stand so that water naturally flows down to the water supply channel 50.

The operation of VIMing the side seam portion of cloth using the above-mentioned split seam sewing machine will be explained.

When the sewing machine main body 6 is operated (operated) to proceed with sewing while overlapping the side seams of the upper fabric 1 and the lower fabric 2, first, as is well-known, the upper fabric 1 and the lower fabric Cloth 2 is sewn together. At the same time, the lifting cylinder 38
lowers the ultrasonic generator 8, and its vibrator starts oscillating.

Before and after the stitching of both cloths 1 and 2, the cloth splitting member 7A
The seam allowance 1 of the upper fabric 1 and the lower fabric 2 is
a and 2a are guided and gradually divided in the vertical direction (opposite direction) (see Figure 5.8.9).

Thereafter, as both fabrics 1.2 are sewn and moved while the sewing line of both fabrics 1.2 is pressed by the presser tongue piece 25 of the presser foot 11, as shown in FIGS. 6 and 8. The seam allowance 1a of the upper cloth 1 is connected to the guide portion 3 of the upper cloth folding member 7C.
3 and then folded back along the presser tongue piece 25. At this time, the seam allowance portion 1a passes through the gap between the guide portion 33 of the upper cloth folding member 7C and the cutout surface 26 of the presser foot 11.

At the same time, the seam allowance 2a of the lower cloth 2 is first bent downward by the guiding slope 31 of the lower cloth folding part 07B, and then supported by the action of the guiding slope 31 of the lower cloth folding member 7B. Part 781 and cloth dividing part 2 of cloth dividing member 7△
It is folded back by 180 degrees and arranged between the side surfaces of 8 and 8. This folding is performed along the seam line located below the presser tongue piece 25 (see FIG. 9). The folded portions of the seam allowances 1a and 2a of both the cloths 1 and 2 folded back in this manner are guided along the presser tongue piece 25 to the tip of the output horn 8A. As shown in FIG. 2, the tip of the output horn 8A is inclined upward to the right, so that the folded portions of the seam allowances 1a and 2a can easily connect the tip of the output horn 8A and the anvil 49. It is possible to get in between.

Immediately after that, as shown in FIG. 7, the tip of the output horn 8A of the ultrasonic generator 8 comes into contact with the folding line of both the cloths 1 and 2, and the feeding movement of the feed table 18A causes the
When the anvil 49 is pressed (=I) with both the cloths 1 and 2 interposed between the tip of the output horn 8A and the anvil 49 is pressed (=I), the ultrasonic generator 8 is applied, resulting in its output horn 8A
The cloth itself at the abutting portion generates heat, and the fold 3 is imparted to the cloth 1.2 by the ironing effect of the heat.

Cloth 1 by applying ultrasonic vibration from this ultrasonic generator 8.
The heat generation of 2 occurs in the cloths 1 and 2 only when the cloths 1 and 2 are held between the output horn 8A and the anvil 49, so unlike the conventional electric heating element, instantaneous heating and instantaneous Heat dissipation can be realized, and the heat m can also be easily controlled by changing the frequency.

Therefore, temperature control is easy and workability is improved.

In addition, since the output horn 8A itself does not generate heat, there is no need to worry about burns caused by touching the horn 8A with workers' hands, burns caused by contact with cloth, or the occurrence of fire. Safety is improved.

Further, at the same time as the ultrasonic vibration is applied to the cloth 1.2, water in the water supply channel 50 is emitted toward the cloth in the form of a spray due to the vibration of the output horn 8A, and the water is heated by the heat. By doing so, a steam ironing effect is imparted, and the folds 3 are formed more effectively.

After the side seams of fabrics 1 and 2 are sewn in this way,
Both parts 1 and 2 are sent out rearward as the suture moves.

In the above embodiment, the anvil 49 is provided on the feed table 18A, but the anvil 49 can also be provided on the nail plate 10.

(Effects of the Invention) That is, according to the present invention, immediately after the upper fabric and the lower fabric are sewn together by the operation of the sewing machine, the guiding means sequentially moves the seam allowances of both sides in opposite directions as the stitching moves. Immediately after the folding, the ultrasonic vibration of the output horn of the ultrasonic generator is applied along the folding line, and the cloth itself in contact with the output horn generates heat. Creases are created by the ironing effect of heat, and ultrasonic vibrations from an ultrasonic generator are used to create the creases, which generates heat in the fabric itself, unlike conventional methods using electric heating elements. It is possible to achieve instantaneous heating and instantaneous heat dissipation, and the amount of heat can be easily controlled by changing the vibration frequency, improving workability, and since the output horn itself does not generate heat. , on the same horn! Al1 The fear of burns caused by touching the hands and fingers of al1 workers, and the fear of scorching and fire caused by contact with cloth are eliminated, and there is an effect that safety in use is improved.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a perspective view of the main parts of a split-stitch sewing machine, FIG. 2 is a partially cutaway side view of the bed end of the sewing machine, and FIG. A plan view of the surrounding area of the throat plate, FIG. 4 is a sectional view taken along the line IV-IV in FIG. 3,
Figure 5 is a sectional view taken along line V-v in Figure 3, and Figure 6 is a cross-sectional view taken along line V-V in Figure 3.
7 is a sectional view taken along the line ■-vI in FIG. 3, FIG. 8 is a perspective view of the road body showing the state of fabric N made by a sewing machine, and FIG. 9 is a folded back of the lower fabric. A perspective view of the road body showing the condition, Fig. 10 is a partially cutaway side view showing the support part of the ultrasonic generator, Fig. 11 is a cross-sectional view of the output horn of the ultrasonic generator, and Fig. 12 is side-stitched. It is a perspective view of cloth. 1... Upper fabric 1a... Seam allowance 2... Lower fabric 2a... Seam allowance 6... Sewing machine body 7... Guidance means 8: Ultrasonic generator 8A... Output horn applicant Brother Industries, Ltd. Representative Patent attorney Hidehiko Okada and 3 other people) 1... Upper fabric 1a... Seam allowance 2... Lower fabric 2a... Seam allowance 6... Sewing machine Main body 7... Guidance means Fig. 3 Fig. 4 Fig. 7 Fig. 8 Fig. 7Δ Fig. 9

Claims (2)

[Claims] (1) The sewing machine body (6) that sews the upper fabric (1) and the lower fabric (2) is attached to the seam allowance (
1a, 2a) in a folded manner sequentially in opposite directions as the stitching moves. (8), so that the tip of the output horn (8A) of the device (8) can be brought into contact with the fold line of both fabrics (1, 2) immediately after being bent by the guiding means (7). A split-stitch sewing machine characterized by being oriented to (2) Output horn (8A) of the ultrasonic generator (8)
The sew-split sewing machine according to claim 1, further comprising a water supply channel (50) at a distal end thereof, which can supply water.