JPS58138478A - Method and device for adjusting depth of floating sewing of floating sewing machine - Google Patents

Abstract

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

Description

[Detailed Description of the Invention] The present invention adjusts the depth of sounding by automatically or artificially adjusting the support position of the material to be scooped with respect to the trajectory of the curved needle of the sounding sewing machine using a solenoid. The present invention relates to a method and an apparatus thereof.

Conventionally, as shown in Fig. 5, depth-sounding sewing machines have been used to sew the two-layered part of the body fabric a and the hem folded part so that the pocket is relatively downward so that the curved needle passes through approximately the middle of the thickness of the body fabric a. When performing depth sounding by folding the hem of a women's jacket, etc., the hem is folded back from the top at the pocket area, as shown in Figure 6.

+> Three layers of ari fabric a and pocket fabric C are stacked, but the push-up cloth receiver 1 is restricted in its upward movement for the two-layer overlapped portion, and cannot move upwards more than the other. The apex position of the plate 13 resists the elasticity of the spring attached to the push-up shaft and is lowered by the thickness of one piece of pocket fabric C, so the one-curve needle 34 moves the body fabric A in the same way as in a normal two-ply part.
The thick one will penetrate between the pieces (scoop two pieces),
It is possible to make a survey line without penetrating the lowest pocket fabric C and without sewing the pocket part.

However, in the measurement lines such as side lines and back seams, body parts a and a'
Since there are a total of four layers, the folded part is doubled, the folded part is doubled, and the folded part is doubled, so the top position of the push-up plate is bent by the thickness of the double part of the lower body part, as described above. However, the curved needle 87 does not reach the body part, and the curved needle 84 does not penetrate the body part), making it impossible to measure the line. Therefore, in areas such as side lines or back seams, the apex position of the push-up plate must be readjusted by adjusting the push-up adjustment device. Manual adjustment requires a lot of effort and skill from the priest, and has various drawbacks, such as lower work efficiency and difficulty in securing skilled workers.

However, in the present invention, as shown in FIG. 7, when the side line or the back stitching part has come to the position of the push-up plate 18 and the push-up cloth receiver 1, the count up to that point is counted. Because the solenoid 12 was used to release the upward restriction on the push-up cloth receiver 1 and lift it automatically or by monitoring the situation and operating the knee switch, etc., the push-up The raising plate 13 is in the normal sewing position for two layers, and the curved needle 34 penetrates between the thickness of the bottom layer body fabric a' and connects it from the top of the fabric a, a', 'b, b.
), it is possible to perform blindstitching without any trouble, and there is no need to manually adjust the apex position of the push-up plate each time the side line or back seam is sewn, increasing work efficiency. It has remarkable effects such as allowing even unskilled workers to perform good sewing.

Reference will now be made in detail to the accompanying drawings, which illustrate one example of carrying out the invention. Reference numeral 1 denotes a well-known push-up I1'' receiver that branches left and right to match the wedge-shaped end A111 of the push-up plate 18, and the push-up cloth receiver is attached and supported at the tip of the rod 2. Reference numeral 3 indicates a push-up cloth holder, in which the intermediate portion of the rod 2 is pivoted to a frame 15 that fixes the sewing machine throat plate 14. It is something that moves you. 4 is a dovetail hole drilled in the proximal end of the rod 2, and 5 is a dovetail hole bored into the dovetail hole 4 for regulating the upward position of the push-up cloth holder 1 (1j, depending on the thickness of the material, etc.). This is an adjustable screw punch with a grooved knurling cut on the side circumference of the head 16. 8 is a stop plate placed on the frame 15 at a position where the lower end 6 of the adjustable screw punch 5 is received. , in the middle part of the upper surface, the deeper it goes to the right,
It is provided with an inclined groove 7 whose left end coincides with the top surface of the stop plate 8, and long holes 17°17 are bored in two places on the left and right sides, and the long holes 17, 1? is screwed onto the frame 15, and the stop plate 8 is screwed onto the frame body 15.
can be slid forward and backward in the left and right direction, and the stop plate 8
If it slides to the left, the lower end 6 of the adjusting screw 5 will fall into the deepest part of the inclined groove 7, and if it slides to the right, the lower end 6 will fall into the inclined groove 7.
The stop plate 8 is designed so that it can be removed from the stop plate 8 and returned to the upper surface of the stop plate 8. Reference numeral 10 indicates a plate spring fixed to the side surface 9 of the rod 2 with a screw, and the end face 11 of the plate spring 10 is attached to the screw punch 5.
The side circumference of the head 16 and the tip surface 1 are brought into elastic contact with the side circumference of the head 16.
1 to prevent the screw punch 5 from rotating unexpectedly due to vibrations of a sewing machine or the like.

Reference numeral 12 denotes a solenoid which is fastened and fixed with a solenoid mounting nut 20 to a solenoid mounting plate 19 fixed to the head of the sewing machine body on the left side of the needle swing shaft 18. 21 is a solenoid arm whose base end is fixed to the solenoid swing shaft 22 of the solenoid 12 with a tightening screw 28; 24 is a vertically rising portion 25 between the tip of the solenoid arm 21 and the left side of the stop plate 8; 27 is a solenoid arm nut bolt screwed into a protrusion 28 attached to the solenoid mounting plate 19, and the protrusion 28 of the solenoid arm 21 ', and by adjusting the stopper 27, the rotation of the solenoid arm 21 when the knee switch (not shown) connected to the solenoid 12 is turned on (arrow d in Figure 1). Reference numeral 29 denotes a known uplifting device for the uplifting plate 18, and as shown in FIG.
A push-up operating rod 82 is attached to the tip of the push-up shaft 8o, the tip of which is attached to the tip of the push-up shaft 8o, which is pivotally supported at the base end of a push-up swinging rod 81 that raises and lowers the push-up shaft 8o. and a spring 38 whose base end is fixed to the thrusting shaft 8o and whose tip is equipped to push up the thrusting swinging rod 81, and the thrusting shaft 3° is rotated clockwise (arrow f ), the tip A of the thrust-up operating rod 82 moves upward, and the tip B of the thrust-up swinging rod 81 comes into contact with the tip A and moves upward due to the elasticity of the spring 88. When the push-up plate 18'i is raised and the push-up shaft 8o is rotated counterclockwise (arrow g), the tip A of the push-up operating rod 32 moves downward, and when the push-up plate 18 is raised, I tried to push up the cloth receiver 1 by restricting the upward movement through the cloth, but it was up! Since + is prevented, even if the push-up shaft 3o continues to rotate in the upward direction, only the section A will rise against the elasticity of the spring 3a, and the section B will remain stationary. 84 is the needle furisode 1
8 is a known curved needle attached to the needle swinging arm 35 fixed at the tip of 86, and 86 is a known fabric presser foot that presses the fabric against the throat plate 14, which has a smooth finish so that the back side of the fabric advances. The right and left sides of the push-up plate 13 are separately separated, and the spring cloth is pressed against the back surface of the throat plate 14, respectively.

The present invention has the above-described configuration, and when using the same, first, as shown in FIG. For straight stitching of the normal part of the two-layered fabric a and the hem turn-up part, the one-curve needle 84 is made to pass through approximately the middle of the thickness of the body fabric a using a well-known push-up adjustment device (not shown) of the fine line sewing machine. Adjust its height, and use the 5-piece screwdriver to adjust the position of the upward movement of the cloth on the push-up cloth receiver 1 by holding it between the apex of [B] and the push-up cloth receiver 1. This is determined by screwing in until it touches the top surface of the plate 8, but in any case, the adjustment to stop bleeding that suits the fabric is determined experimentally by performing trial sewing many times. Next, the blind stitching of the normal part progresses, and as shown in FIG. If you come in time.

As with conventional fine line sewing machines, the push-up cloth receiver 1 has an adjustable screw punch 5.
Since it is in contact with the upper surface of the stop plate 8, it cannot move upward, and the apex position of the push-up plate 18 is lowered by the thickness of the bottom layer pocket fabric C against the elasticity of the spring 38, and the curved needle passes through. The locus 87 is the same as the blind stitching in the normal part of the body fabric a.
The curved needle 84 is located at a position that passes through the y-middle, so that the curved needle 84 does not penetrate the pocket fabric C and performs a good blind stitch. As the blind stitching progresses further and the side line or back stitched part (four-layered part) comes to the uncut part as shown in FIG. The solenoid swing shaft 221d rotates in the direction of arrow d, and the connecting link 2 connected to the tip of the solenoid arm 21
4 to the left (in the direction of the arrow).

Then, the stop plate 8 that connects the left vertical rising part 25 to the tip of the connecting link 24 slides to the left through the elongated hole 17, and the lower end 6 of the adjusting screw 5 reaches the deepest point of the inclined groove 7. The push-up cloth receiver 1 is no longer restricted in the downward direction, and movement in the vertical direction (downward movement is from the beginning) is free, and the upper push-up cloth receiver 1 is no longer restricted. Therefore, as shown in FIG. 7, the apex position of the push-up plate 13 returns to the height set during blind stitching of the normal part, and the curved needle passing locus 87 corresponds to the thickness of the bottom layer body fabric a'. This is a position that penetrates through the gap, making it possible to sew a good blind stitch.

When the side line or back stitching part passes between the push-up plate 18 and the push-up cloth receiver 1, when the knee switch is turned OFF after visually observing the passage, the solenoid 12 is turned OFF.
The solenoid swing shaft 22 rotates in the direction of arrow 0 due to the elasticity of the return spring (not shown) built into the solenoid arm 21.
The connecting link 24 connected to the tip is on the right (arrow 1 direction)
The stop plate 8, which connected the left vertical rising part 25 to the tip of the connecting link 24, slid to the right, and the lower end of the adjusting screw 5, which had fallen into the deepest part of the inclined groove 7, 6 climbs up the inclined groove 7, exits the inclined groove 7, and comes to the upper surface of the stop plate 8, so the push-up cloth receiver 1 becomes the upward regulating position for eyelash stitching in the normal part of FIG. This is for sewing blind stitches.

[Brief explanation of the drawing]

The attached drawings show an example of carrying out the present invention, and Fig. 1 is a perspective view of the main parts of a known depth-sounding sewing machine equipped with the device of the present invention, seen from the right side, and Fig. 2 shows an example of the thrust-up cloth holder and the thrust-up sewing machine. A left side view of the main part of the plate part, Fig. 8 is a mechanism diagram of the push-up actuating device, Fig. 4 is a perspective view of the main part of the stop plate, and Fig. 5 shows the push-up cloth receiver during eyelash sewing of the normal part. FIG. 6 is a front view of the main part showing the positional relationship with the stop plate, FIG. 6 is a front view of the main part of the pocket part, and FIG. 7 is a front view of the main part of the side line or back seam part. 1... Push-up cloth holder, 2... Push-up cloth holder, 8...
・The push-up cloth holder is a shaft, 4...mediation, 5...adjustment screw,
6... Lower end of screw punch, 7... Inclined groove, 8... Stop plate, 9... Side surface, 10... Plate spring, 11... Tip surface, 12... Solenoid, 13... ... Thrust-up board, 14
...Throat plate, 15...Frame body, 16...Screw punch head, 1
7... Long hole, 18... Needle swing shaft, 19... Solenoid mounting plate, 20... Solenoid mounting nut, 21...
... Solenoid arm, 22 ... Solenoid swing axis, 23
... Tightening screw, 24 ... Connection link, 25 ... Vertical rising part, 26 ... Connection shaft screw, 27 ... Solenoid arm stopper, 28 ... Extending part, 28'.・
・Protrusion, 29... Thrust-up actuating device, 80... Thrust-up shaft, 81... Thrust-up rocking rod, a2... Thrust-up operating rod, 8B... Spring, 84... Curve Needle, 85... Needle swing arm 1.86... Presser foot, 87... Curved needle passing trajectory, a
, a,'...Body fabric, b, b'...Hem folded part, C...Po'7'/) fabric, d, e, f, g,
h, i, -0 arrow, A...tip end of thrust-up operating rod, B...tip end of thrust-up swinging rod.

Claims (1)

[Scope of Claims] A method for adjusting the depth of sounding of a sounding sewing machine, which comprises raising and lowering the support position of the material to be sewn with respect to the passing locus of a one-curved needle. ;i '41 The push-up cloth holder that supports the cloth holder at the tip has the middle of the rod pivoted to the fixed part of the sewing machine, a medium is provided at the base, an adjusting screw is screwed in, and the lower end of the screw A side bar of a depth-sounding sewing machine, characterized in that it is equipped with a stop plate that can slide forward and backward in a receiving position by a solenoid that is activated automatically or manually by operating a switch, and has an inclined groove on its upper surface. Depth adjustment device. , 5. The push-up cloth holder that supports the push-up cloth holder at the tip has the middle of the rod pivoted to the fixed part of the sewing machine, a medium is provided at the base, an adjusting screw is screwed in, and the lower end of the screw punch is The receiving position is equipped with a stop plate that can be moved forward and backward by a solenoid that is activated automatically or manually by operating a switch, and has an inclined groove on the upper surface, and the push-up cloth holder is installed on the side surface of the rod. 1. A side rod depth adjusting device for a sounding sewing machine, characterized in that a plate spring is fixed to the plate spring, and the tip surface of the plate spring makes elastic contact with the screw punch with frictional resistance.