JPH07275544A - Curtain tucking device - Google Patents

Abstract

PURPOSE:To easily position a curtain cloth at the time of the extension thereof, prevent the dislocation of curtain cloth and accurately form a triple crest tuck and a double crest tuck at a desired position. CONSTITUTION:Three tuck crest formation spatulas 51 to 53 are fitted to the table front of a machine for sewing curtain cloth F by moving a cloth support plate 14 and a cloth presser 15 to clamp the cloth F along the upper surface of the table 13, so as to be capable of free advance and retreat in a back and forth direction. Also, two tuck bottom formation spatulas 31 and 32 are laid between a group of the spatulas 51 to 53, and the table 13, so as to be capable of free advance and retreat in a breadthwise direction. Furthermore, a fixing needle 26 for securing the curtain cloth F entering between the plate 14 and the presser 15 together with the spatulas 51 to 53 is formed, so as to be capable of free elevation, and the intermediate spatula 52 is formed so as to project beyond others 53 to 54 toward the table 13. In this case, all the spatulas 51 to 53, and 31 and 32 are respectively formed so as to be capable of opening and closing vertically.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pleating device for forming folds such as double ridges and triple ridges on a top portion of a curtain by sewing with a sewing machine.

[0002]

2. Description of the Related Art An example of a curtain fold removing device is disclosed in Japanese Patent Application Laid-Open No. Hei 3
No. 228794 is disclosed. This device
A sewing machine having a cloth support plate and a cloth retainer that sandwiches the cloth and moves back and forth, left and right along the upper surface of the table of the sewing machine. For the front side of the table, two spatula for forming folds and three folds for forming folds are formed. Arrange the spatula parallel to each other and the spatula forming spatula to be located on the table side, and place the upper part of the curtain passed between the spatula forming spatula and the spatula forming spatula to make the spatula forming spatula. Cover, and advance the fold forming spatula toward the fold forming spatula to engage the fold forming spatula and the fold forming spatula to bend the curtain in a zigzag shape, and then fold the folds. After pulling out the valley forming spatula to the side, advance the fold forming spatula again with the curtain to enter between the cloth support plate and the cloth retainer on the table, and urge this cloth retainer downward. Curtain between cloth support plate And sandwich the fold forming spatula, pierce the curved part of the curtain with a plurality of needles from above through the needle groove provided in advance for the fold forming spatula to fix the curtain, and then retract the fold forming spatula. Then, pull out from between the curtains, and then drive the sewing machine, move the cloth support plate and the cloth retainer back and forth and left and right while raising and lowering the sewing machine needle to sew the bent portions of the curtain, and thereby the above bent portions. It is fixed as a fold.

[0003]

Conventionally, all the table-side edges of the three fold forming spatulas are aligned on the same vertical line, so that when the curtain is put on the fold forming spatula, There is a problem that it is difficult to set the reference position and the curtain is not fixed when it is engaged with the spatula for forming the folds, so that the curtain is easily displaced from the predetermined position, and thus the position of the folds varies. Further, as a curtain hanging hook to be attached to the top of the curtain, a strip-shaped support plate made of plastic and a slide hook that can be moved along the support plate and locked at any position,
It is known that the support plate is fixed by sewing and the height of the hook can be adjusted after fixing, but conventionally, an appropriate means for supporting the hanging hook at the time of sewing is known. However, since it was supported by hand at the time of sewing, the attachment of the hanging hook was distorted, and in order to prevent this, it was necessary to remove the slide hook at the time of sewing.

A first object of the present invention is to easily set a reference position when covering a fold forming spatula with a curtain and to fold the curtain when the fold forming spatula and the fold forming spatula are engaged with each other. It is an object of the present invention to provide a fold-removing device capable of fixing folds to a spatula for forming a fold and a spatula for forming a fold, and thus capable of accurately forming a fold at a desired position. A second object is to achieve the above first object, and
The hanging hook for plastic curtain is supported without removing the slide hook from the hanging hook so that the hanging hook can be sewn without distortion.

[0005]

SUMMARY OF THE INVENTION The present invention (see FIGS. 2 and 3)
), The cloth support plate 14 and the cloth retainer 15 for sandwiching the curtain material F are sewn while moving back and forth and left and right along the upper surface of the table 13 of the sewing machine. Vertically parallel three pleat forming spars 51, 52, 53 having facing width-direction edges 51a, 52a, 53a and front-back direction needle grooves 51b, 52b, 53b opening at a plurality of positions of the edges. In addition, the widthwise edges 31a, 32a facing the fold forming spatula side are provided between the table and the fold forming spatula at the front side standby position. Two fold forming spats 31 and 32 are provided so as to be movable back and forth in the width direction of the sewing machine, corresponding to the plurality of needle grooves of the fold forming spatula that have entered between the cloth support plate and the cloth retainer. Carte above In the curtain fold removing device in which the fixing needle 26 of the ground F is provided to be able to move up and down, the central spatula 52 of the three fold forming spatula is the remaining two fold forming spatulas 51, 53. A curtain fold removing device, which is formed so as to be capable of advancing and retracting so as to project toward the table 13 side, and the vertical intervals of the fold forming spatula and the fold forming spatula are formed to be openable and closable. is there.

Any means such as an air cylinder or a screw shaft can be adopted as a means for moving the three fold forming spatulaes forward and backward at the same time. However, in terms of quickness of operation and stroke, air is used. Cylinders are preferred. In this case, in order to adjust the height of the folds by changing the stop position when moving forward to the table side, it is preferable to form the air cylinder in multiple stages or provide a stopper. Further, the fold forming spatula can be moved forward and backward in addition to the width direction, and in this case, the structure of the forward and backward air cylinder for the fold forming spatula is simplified.

An air cylinder, an electromagnet, a motor drive or the like is used as a means for causing the central spatula among the three fold forming spars to protrude from the remaining two fold forming spars toward the table. However, the central spatula is urged by a spring so that the spatula is projected to the table side more than the remaining two sheets, and is fixed at the retracted position when retracted against the urging of the spring. A locking device may be provided, in which case the device will be smaller and its control easier. As the locking device, any means other than the means for gripping the guide shaft that moves forward and backward with the central spatula as shown in the embodiments described later can be adopted. Also,
The means for opening and closing the fold forming spatula and the fold forming spatula may be any means that vertically move up and down symmetrically with respect to the upper and lower intermediate positions, and an air cylinder, an electromagnet, a motor drive, or the like can be used.

A second object is to provide a pair of left and right levers extending forward from the rear side of the guide plate of the sewing machine needle and a widthwise direction connecting the tip ends of the levers, as shown in an embodiment described later. A “U” -shaped holding lever consisting of a holding bar is connected so that it can swing up and down, and the tip is urged downward to form the above-mentioned cloth holder. The plastic curtain hanging hook is formed on the lower surface of the above-mentioned holding bar. It is achieved by forming a recess for letting out the slide block of the slide hook.

[0009]

As shown in FIG. 11 (a), the spatula forming spats 31 and 32 are located at the side standby positions, and the fold forming spars 51, 52 and 53 are located at the standby position on the front side of the table. There
And when the central spatula 52 of the three folds forming spatula is protruding, the curtain cloth F is hung so as to cover the edge 52a, and then the folds forming spatula 31, 32 are placed on the side waiting side. It moves from the position to the front of the table 13, that is, between the table and the fold forming spatula. Alternatively, after moving the fold forming spatula between the table and the fold forming spatula, a curtain material may be hung on the fold forming spatula in the same manner as described above. After that, the spatula-forming spatula is advanced toward the table side, and the central spatula-forming spatula is inserted together with the curtain material between the two spatula-forming spars. In addition, when the spatula forming spatula 31, 32 is formed so as to be able to move forward and backward, the spatula forming spatula 31, 32 is used as a spatula forming spatula 51, 52, 5
3 (see (b) of the same figure), and insert the central fold forming spatula 52 together with the curtain fabric F between the two fold forming spars 31, 32 in the same manner as above. Good.

Next, the upper and lower two fold forming spatulas are closed (see (c) in the figure), and the central fold forming spatula 52 is formed.
Sandwich the curtain fabric F from above, and then with the center fold forming spatula stopped, the top and bottom two fold forming spatulas 51 and 53 have the same tip edges of the three fold forming spatulas. Move it forward so that it is aligned with the vertical line (see (d) in the figure)
The curtain material F is bent in a zigzag shape. In addition, when the spatula forming spatula is formed so as to be able to move forward and backward, the spatula forming spatula may be advanced to the side of the pleat forming spatula and the curtain material may be bent in a zigzag shape in the same manner as above. Then, after the curtain material is bent in a zigzag shape, (a) of FIG.
As shown in Fig. 3, the upper and lower two fold forming spars 51, 53 are closed and one fold forming spatula 51, 52, 53 and two fold forming spars 31, 32 are alternately engaged with each other. Like
Moreover, the curtain fabric F is sandwiched between the upper and lower spatulas and overlapped.

Then, the spatula forming spars 31 and 32 are retracted to the side standby positions to form the pleat forming spades 51, 52 and 5.
3 (see (b) of FIG. 13), and then the spatula 51, 52, 53 for forming the folds is again placed on the table 13.
The cloth support plate 14 and the cloth presser 15 (see (c) of the same figure), and the cloth presser 15 is urged downward to push the space between the cloth support plate 14 and the cloth presser 15. The curtain material and the fold forming spatula are sandwiched between them, the fixing needle 26 at the upper standby position is lowered, and the curtain material F is pierced and the curtain material is inserted between the cloth support other plate 14 and the cloth retainer 15. Fix, and then the fold forming spatula 51, 52, 5 above
3 is retreated to escape from between the curtains F (see (d) in the figure), the fixing needle 26 is further raised to return to the upper standby position, and then the sewing machine is driven to move the cloth support plate 14
While moving the cloth presser 15 back and forth and left and right, the sewing machine needle is moved up and down to sew the curtain fabric F, thereby fixing the bent portion as a fold.

The above is the case of forming the Sansan fold,
In the case of forming two folds of folds, as shown in FIG. 12A, the center fold forming spatula 52 is hung on the curtain fabric F in the same manner as described above, and then two fold forming spatulas are formed. Closed (same (b)
(See) Stack two sheets and combine them into one sheet. Next, the fold forming spatula 51, 52, 53 are advanced, and the center fold forming spatula 52 has a double edged fold forming spatula 3
After contacting the edges 1 and 32, the center fold forming spatula 52 is stopped and the upper and lower fold forming spatula 5
Only Nos. 1 and 53 are advanced until the edges of the three fold forming spatula are aligned with the same vertical line. In addition, spatula 3 for fold valley formation
When 1 and 32 are formed so as to be able to move back and forth, the spatula forming spatula is advanced to the side of the fold forming spatula 51, 52, 53 (see (c) above). Forming spatula 5
The edges of 1, 52 and 53 may be aligned with the same vertical line.

Next, only the upper and lower fold forming spatulas are advanced by a predetermined distance (see (d)), and the two overlapping folds of the fold forming the upper and lower fold forming spars are united. The forming spatula is engaged and the curtain material is bent in a zigzag shape. If the spatula forming spatula is formed so as to be able to move back and forth, the spatula forming spars 31 and 32 are moved forward to the spatula forming spatula side, and two spatula forming spatula 51 for upper and lower two are formed in the same manner as above. , 53 and the double-layered spatula-forming spats 31 and 32 that are combined into one may be engaged with each other. And
By closing the upper and lower two fold forming spars 51 and 53, the two fold forming spats and the combined fold forming spatula are meshed with each other, and the curtain fabric F is sandwiched between the upper and lower spars. Overlap. After that, as in the case of forming the folds of the three mountains, the spatula for forming folds is retracted to the side standby position and pulled out from between the folds for forming folds.
2, 53 are carried on the sewing machine table 13 together with the curtain material F, and they are sewn together to form a double fold.

A locking device for fixing the spatula to the retracted position by biasing the central one of the three pleat forming spars to the table side rather than the remaining two spatulaes. When the lock is released, the central fold forming spatula above is sandwiched by two fold forming spatulaes and pushed in, or two fold forming folds combined into one You can hit the edge of the spatula and push it in,
No need for troublesome control for retreating the spatula for forming the center fold. When a depression is formed on the lower surface of the presser bar that constitutes the cloth retainer, after the fixed needle is pierced into the curtain material sandwiched between the cloth retainer and the cloth support plate, the plastic curtain hanging hook is draped. It can be pushed between the ground until the edge of the supporting plate of the hanging hook hits the fixed needle, and then the holding bar is lowered to hold the hanging hook from above the curtain ground while avoiding the sliding block of the hanging hook in the recess. .

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIG. 1, 11 is a sewing machine head arm, and 12 is a sewing machine needle, and a cloth support plate 14 is provided on a table 13 (see FIGS. 2 and 3) below the head arm 11.
Is placed and a cloth presser 15 is provided above the cloth presser, and the curtain material F is sandwiched between the cloth support plate 14 and the cloth presser 15 to move integrally on the table 13 back and forth and left and right. The cloth retainer 15 is provided with a vertical guide 16a at the end of an arm 16 integrally connected to the cloth support plate 14 on the left side of FIG.
And a horizontal guide plate 17 which is connected to be movable up and down via an L-shaped lifting metal fitting 16b, and is provided so as to project rearward to the left and right of the rear edge of this guide plate 17 (the left side in FIGS. 2 and 3 is the rear). The holder arm 18 and the L-shaped lever 19a connected to the left and right rear edges of the guide plate 17 swingably and extending forward.
And a holding bar 19b connecting the tip of the holding bar 19b, and a holding lever 19 having a U-shape, and a holding air cylinder 20 swingably attached to the rear end of the holder arm 18. Then, the guide plate 17 is moved up and down by driving the double-arm lever 16c having a fulcrum at the center of the arm 16, and the holding air cylinder 20 is pressed.
The pressing lever 19 swings up and down via the piston rod. A window 17a that allows the sewing needle 12 to move up and down is provided at the center of the guide plate 17, and two branches that allow the sewing needle 12 and the fixing needle 26 described below to move up and down are provided at the front edge thereof. Three short needle grooves 1 that allow only the attached needle groove 17b and the fixing needle 26 to move up and down.
7c are provided in desired shapes.

On the front surface of the head arm 11 (see FIG. 2), a fixed needle air cylinder 2 is provided via a bracket 21.
2 and linear guides 23 located on the left and right of the air cylinder 22 (on the front side and the back side of the paper) are fixed such that their upper ends are slightly inclined forward with respect to the vertical line, and the piston extends downwards of the air cylinder 22. A rod-shaped needle base 25, which is long in the width direction, is connected to the lower end of an elevator shaft 24 that is vertically inserted through the rod and the linear guide 23. The needle groove 25 is attached to the lower surface of the needle base 25.
A plurality of fixing needles 26 corresponding to 7b and 17c are fixed downward.

2 and 3, the above table 1
In front of 3 (on the right side of the figure), the upper and lower two fold forming spatulas 3
1, 32 are provided with their width direction edges 31a, 32a facing forward, and further three fold forming spars 51, 52, 53 are formed in front of the width direction edges 51a, 52a.
It is provided with a and 53a facing rearward. However, the center fold forming spatula 52 among the three fold forming spars 51, 52, 53 is made longer in the front-back direction than the fold forming spars 51, 53 at the upper and lower ends, and its edge is formed. 52a protrudes from the other edges 51a and 53a toward the table 13 side. The fixing needle 2 is attached to the widthwise edges 51a, 52a, 53a of the three pleat forming spars 51, 52, 53.
Needle grooves 51b, 52b, 53b corresponding to No. 6 are provided.

As shown in FIGS. 4 to 6, a first holder 33 which is movable back and forth and right and left is provided on the right side of the fold forming spatula 31, 32, and the upper surface of the first holder 33 is provided with the above. A support plate 34 extending above the fold forming spars 31 and 32 is connected, and linear guides 35 are fixed on the left and right sides of the support plate 34 with a notch 34a provided at the rear edge of the central portion therebetween. . The linear guide 35 has two vertical guide holes arranged side by side, and the left linear guide 35 has a left guide hole and a right guide guide 35.
The relatively short first guide pin 36A is inserted into the right guide hole of the above, and the relatively long second guide pin 36B is inserted into the right guide hole of the left linear guide 35 and the left guide hole of the right linear guide 35.

The guide pins 36A and 36B extend downward through the guide holes formed in the support plate 34, and the spatula 31 for forming the upper fold valley is formed between the lower ends of the left and right first guide pins 36A and 36A. Is hung. Further, the left and right second guide pins 36B and 36B are provided with the upper fold forming spatula 3
A lower fold valley forming spatula 32 is hung between the lower ends of the guide holes provided in advance in FIG. The upper surface of the upper fold forming spatula 31 and the lower fold forming spatula 32.
The backing plates 31A and 32A are fixed to the lower surfaces of, respectively. Then, the backing plate 31 of the upper fold forming spatula 31
An air cylinder 37 for opening and closing is fixed to the central portion of the upper surface of A so as to pass through the notch 34a of the support plate 34, and its piston rod 37a penetrates the upper fold valley forming spatula 31 to form a lower lower fold valley. It is connected to the spatula 32. Further, a hook-shaped plate-like stopper 38 that rotates from the back surface to the left side surface is fixed to the first holder 33 so as to be positioned at an intermediate height between the upper and lower fold valley forming spars 31 and 32.

Therefore, when the piston rod 37a is projected (see FIG. 5), the inner two second guide pins 36B descend and the lower fold forming spatula 32 is suspended and held.
Above that, the upper fold forming spatula 31 is provided with the piston rod 3.
The upper and lower fold forming spats 31 and 32, which are held according to the projecting length of 7a, are positioned above and below the plate-like stopper 38 at equal intervals. When the piston rod 37a is retracted, the fold forming spats 31 and 32 are closed, so that the upper and lower contact plates 31A and 32A are connected to the plate-like stopper 3.
Upper and lower pleat forming spats 31 and 32 are held at positions sandwiching 8.

In the first holder 33 (see FIG. 1),
The piston rod 41a of the first air cylinder 41 in the width direction on the moving base 40 located on the right side and one end of the spindle 43 inserted into the front and rear linear guides 42 of the first air cylinder 41 are connected to each other. 41a
When retracted, the first holder 33 retracts from the illustrated operating position to the right standby position. A second air cylinder 44 in the front-rear direction and a guide shaft 45 are provided in parallel on the left side of the moving table 40.
Is the front and rear two arms 40 projecting from the left end surface of the moving base 40.
The rear side (upper side in FIG. 1) arm 40 is inserted through a and 40b.
b shows the piston rod 44a of the second air cylinder 44.
Is connected, and by the protrusion of this piston rod 44a,
The first holder 33 moves forward from the position shown by a predetermined distance.

A slider 46 is fitted to the front portion of the guide shaft 45, and an adjustment shaft 48 in the front-rear direction is rotatably provided on a bracket 47 for fixing the front end of the guide shaft 45 via a bearing 47a. Then, a threaded portion 48a at the rear of the adjustment shaft 48 is fitted to the female threaded portion of the slider 46, and a stopper 46a facing the tip of the front arm 40a of the movable table 40 is fixed to the rear surface of the slider 46,
By rotating the adjusting shaft 48, the stopper 46a advances and retracts via the slider 46, and the stopper 46a regulates the front-rear position of the moving table 40 when the piston rod 44a of the second air cylinder 44 projects. Set the depth of the folds of. A knob 49 is fixed to the front end of the adjusting shaft 48, and a depth indicator 50 indicating the depth of the fold valley is installed on the rear side of the knob 49.

The three pleat forming spars 51, 52, 53 located in front of the pleat forming spars 31, 32 are attached to the right second holder 54. This second holder 54
Has a front plate 54a and a rear plate 54b protruding rightward from the front and rear edges thereof in the form of a plate along the vertical plane, and the front plate 54a and the rear plate 54b extend in the front-rear direction. It is supported by a guide shaft 55 so that it can move back and forth. The front rod 54a is connected to the piston rod 56a of the third air cylinder 56 located on the right rear side of the guide shaft 55.
The second holder 54 moves forward from the standby position shown in the drawing to the sewing machine side due to the retraction of a.

On the left surface of the second holder 54 (see FIGS. 7 to 9), a pair of upper and lower horizontal guide rails 57 projecting from the rear edge thereof and a slider 58 fitted to the horizontal guide rails 57 are interposed. A plate-like slide support plate 59 that is long in the vertical direction is provided so as to be movable back and forth. A vertical guide rail 60 is projectingly provided on the upper portion of the slide support plate 59,
Two vertical sliders 61 are attached to the vertical guide rail 60.
62 is fitted and the upper arm 51A is attached to the upper slider 61.
The front edge of the upper fold forming spatula 51 is fixed to the lower slider 62 and the front edge of the lower fold forming spatula 53 is fixed to the lower slider 62 via the lower arm 53A.

Stoppers 63 for restricting the movement of the sliders 61, 62 are fixed to the upper and lower ends of the vertical guide rail 60, and an opening / closing air cylinder 64 is fixed to the lower surface of the base of the lower arm 53A with the piston rod 64a facing upward. The upper arm 51 is attached to the tip of the piston rod 64a.
The base of A is connected. Therefore, the upper and lower sliders 6
1, 62, the upper and lower arms 51A and 53A, the upper and lower fold forming spars 51 and 53, the opening and closing air cylinder 64, and the piston rod 64a are urged downward by their own weight, and the lower slider 62 is moved to the lower stopper 63. When the piston rod 64a is held in the contact position and the piston rod 64a projects as shown in the figure, the upper slider 61, the arm 51A and the fold forming spatula 51 are pushed up, and the upper and lower fold forming spars 51, 53 are formed. When the piston rod 64a is opened and retracted, the upper and lower pleat forming spatula 51,
53 is closed by sandwiching the central fold forming spatula 52.

In FIG. 1, a bracket 65 extending in parallel with the central fold forming spatula 52 at a height substantially equal to the central fold forming spatula 52 is provided so as to project from the center of the central fold forming spatula 52. End guide shaft 6 connected to both left and right ends
6 is inserted into a linear guide 65a fixed to a bracket 65, and a spring 67 attached to a guide shaft 66.
Thus, the central fold forming spatula 52 is urged rearward toward the table 13 side. A central guide shaft 68 connected to the central fold forming spatula 52 in the middle of the left and right guide shafts 66 has a linear guide 65a similar to the above.
A locking device 70 that extends forward through the hole and has its protruding end fixed to the bracket 65 via an L-shaped metal fitting 69.
Sandwiched between.

In FIG. 1, the locking device 70 is
A locking air cylinder 71 fixed to the rear end of the L-shaped metal fitting 69 with the piston rod 71a facing leftward, and a "U" -shaped metal fitting 7 fixed to the tip of the air cylinder 71.
2 and a pusher 73 fixed to the tip of the piston rod 71a of the air cylinder 71. And
As shown in FIG. 10, elongated holes 72a through which the central guide shaft 68 is inserted are provided at both front and rear ends of the "U" -shaped metal fitting 72.
Is opened sideways, and a U-shaped groove 73a into which the central guide shaft 68 is inserted is provided at the tip of the pusher 73, and the piston rod 71a of the locking air cylinder 71 is formed.
Of the U-shaped groove 73a of the pressing element 73 pushes the central guide shaft 68 to the left when the piston rod 71a projects, and the central guide shaft 68 is retracted when the central guide shaft 68 is retracted. The central guide shaft 68 is sandwiched between the front and rear elongated holes 72a and the bottom of the hole on the front end side to be locked.

In FIG. 7, the second holder 54 has
The fourth air cylinder 75 is fixed to the lower part of the right side surface of the piston rod 75a with the piston rod 75a facing backward (toward the table 13 side), and the tip of the piston rod 75a is connected to the connecting fitting 7
6 is connected to the lower end of the slide support plate 59, and when the piston rod 75a is retracted, the center fold forming spatula 52 is an upper and lower fold forming spatula 51 as shown in FIG.
When the piston rod 75a is projected, the spatula 51 and 53 for forming the upper and lower pleat ridges are projected rearward from the table 1.
Spatula 51, 52, 5 for forming three folds by advancing to the 3 side
The edges 51a, 52a, and 53a of No. 3 are aligned.

In the above-described embodiment, the spatula 31 for forming the fold valley,
32 moves forward and backward in the width direction by the first air cylinder 41, and moves forward and backward by the second air cylinder 44. Further, the entire fold forming spars 51, 52, 53 are moved forward and backward by the third air cylinder 56, and the fold forming spades 51, 53 at both upper and lower ends are moved forward and backward by the fourth air cylinder 75, and are centered. The fold forming spatula 52 advances toward the table 13 side by the bias of the spring 66, and is locked at an arbitrary position by the locking device 70.

When forming three folds of folds, the spatula for forming folds 31, 32 and the folds for forming folds 51, 52, 53 are placed in the state shown in FIG. 1, and the central fold forming spatula 52 is set in a protruding state. Lock and start driving. As shown in (a) of FIG. 11, the curtain material F is attached to the spatula 51, 52, 53 for forming the folds.
After that, the piston rod 44a of the second air cylinder 44 is projected to advance the fold forming spats 31 and 32 (see (b) of FIG. 11), and then the upper and lower fold forming spars are formed. It is closed by the operation of the opening / closing air cylinder 37 (see (c) in the same figure), and thereafter, the fourth air cylinder 75 is operated to advance the upper and lower two fold forming spars 51, 53 ((( See d)) Curtain material F is bent in a zigzag shape.

Next, the upper and lower two fold forming spatulas 51,
53 is closed by the operation of the opening / closing air cylinder 64 (see (a) of FIG. 13), and further the operation of the first air cylinder 41 causes the fold forming spars 31 and 32 to form the fold forming spars 51, 52,
It is made to escape from between 53 (refer to (b) of FIG. 13), and then the third air cylinder 56 is actuated, and the spatula 5 for forming the folds is formed.
1, 52, 53 are inserted between the cloth support plate 14 and the cloth presser 15 (see (c)), and the cloth presser 15 is urged downward so that the space between the cloth support plate 14 and the cloth presser 15 is increased. Sandwiching the curtain material and the fold forming spatula, the fixing needle 26 is pierced into the curtain material F by the operation of the fixing air cylinder 22, and then the fold forming spatula 51 is operated by the operation of the third air cylinder 56. , 52, 53 are escaped from between the curtains F (see (d)), the fixing needle 26 is further raised, and then the sewing machine is driven.

On the other hand, in the case of forming a double fold, a fold forming spatula 51, similar to the case of forming the above-mentioned three folds, except that the lock of the central fold forming spatula 52 is released.
After the curtain material F is hung on 52, 53 ((a) of FIG. 12)
(See FIG. 2) The two fold forming spars 31 and 32 are closed by the operation of the opening / closing air cylinder 37 (see (b) in the figure), and then the second air cylinder 44 is operated to form the fold forming spatula 3.
1, 32 are advanced to the side of the fold forming spatula 51, 52, 53, and the central fold forming spatula 52 is pushed by the tips of the fold forming spats 31, 32 (see (c) of the same figure), Moving table 40
With the front arm 40a of the abutting stopper 46a in contact, the central fold forming spatula 52 is locked, and then the fourth arm
By operating the air cylinder 75, only the upper and lower fold forming spars 51 and 53 are advanced (see (d) in the same figure), and the curtain material is bent in a zigzag shape. Then, the upper and lower two fold forming spars 51 and 53 are closed by the operation of the opening and closing air cylinder 64, and then the fold forming spats 31 and 32 are ejected in the same manner as in the case of forming the three folds to form the fold forming. The spatula 51, 52, 53 is carried on the sewing machine table 13 and sutured.

14 and 15 show a modified example of the cloth presser 15, and the presser bar 19 at the tip of the presser lever 19 is shown.
forming one or more recesses 19c on the lower surface of b,
When the plastic curtain hanging hook 1 shown in FIG. 16 is sewn to the base of the fold at the same time when the folds are formed, the hanging hook 1 is reliably supported. The hanging hook 1 is composed of a long strip-shaped support plate 2 and a slide hook 3 that can be locked at an arbitrary position on the support plate 2, and the support plate 2 is
The slide hook 3 has a flange 2a and a rack 2b on both front and back surfaces, and the slide hook 3 includes a slide block 3a slidable along one edge of the support plate 2. The slide block 3a includes front and rear racks 2b. Engaging claws 3
b is provided.

When sewing the hanging hook 1, as shown in FIG.
As shown in FIG. 1, after the fixing needle 26 is pierced into the curtain material F sandwiched between the cloth support plate 14 and the cloth presser 15, the pressing lever 19 is operated by the operation of the pressing air cylinder 20.
Is rotated upward so that the pressing bar 19b is floated from the curtain material F, and then the hanging hook 1 and the slide hook 3 are provided between the folds of the curtain material F folded in a zigzag shape.
Is pushed toward you (right side in the figure) until the opposite edge of the support plate 2 hits the fixing needle 26, and then the pressing lever 19 is lowered to slide the hook 3 into the recess 19c on the lower surface of the pressing bar 19b. After the slide block 3a is inserted and the fixing needle 26 is returned to the upper standby position, the sewing machine needle (not shown) is moved up and down along the chain line N.

[0035]

According to the invention described in claim 1, the central one of the three fold forming spatulas can be moved forward and backward so that it can be projected to the table side from the remaining two fold forming spatulas. Since it is formed by vertically opening and closing each vertical interval of the fold forming spatula and the fold forming spatula, by hanging the curtain fabric with the central fold forming spatula protruding, The curtain material can be positioned with the edge of the center fold forming spatula as a reference, which facilitates the setting of the fold forming position. Then, by combining the forward and backward movements of the spatula for forming a fold and the spatula for forming a fold, it is possible to form the Sansan fold and the Nisan fold at any time, and when forming the Sanzan fold, the central fold formation You can hang the curtain cloth on the spatula and insert it between the spatula forming spatula and then close the fold valley forming spatula to fix the curtain cloth. Also, when forming a double fold, two sheets. After inserting the folded fold forming spatula between the upper and lower fold forming spatula, the upper and lower fold forming spatula can be closed to fix the curtain fabric, which prevents the displacement of the curtain. It is possible to obtain a curtain with no variation in the size and position of the folds.

According to the invention described in claim 2, in the invention described in claim 1, since the spatula for forming a fold valley can be moved back and forth in both the width direction and the front-back direction, Both of the fold forming spatula can be advanced and retracted by the air cylinder to be stopped at a desired position, control is easy, and high speed operation is possible.

According to a third aspect of the present invention, in the invention according to the first or second aspect, a locking device for biasing the central fold forming spatula with a spring to project the spatula and fixing it in the retracted position. Since it is provided with a lock, the central spatula formation spatula is sandwiched by two spatula formation spars and pushed in, or two stacks are formed by combining them. The edge of the spatula can be applied and pushed in, and troublesome control is not required for retracting the center spatula for forming the fold.

According to a fourth aspect of the present invention, in the invention according to the first to third aspects, a slide hook of a plastic hook for a curtain is attached to a lower surface of a pressing bar that moves up and down in front of a guide plate that constitutes a cloth pressing member. Since the recess is formed to allow the slide block to escape, after the fixing needle is pierced into the curtain material, the hanging hook is pushed inside the fold until the edge hits the fixing needle, at that time, in the depression of the holding bar. By inserting the slide hook of the hanging hook, the position of the hanging hook can be determined, and the hanging hook can be pressed flat by the pressing bar, the wobble can be eliminated, and the hanging hook can be attached without distortion.

[Brief description of drawings]

FIG. 1 is an overall plan view of an embodiment of the present invention.

FIG. 2 is a side view of a sewing machine head.

FIG. 3 is a plan view from below the cloth presser of FIG. 2;

FIG. 4 is a plan view of a spatula for forming a fold.

FIG. 5 is a front view of FIG.

6 is a cross-sectional view taken along the line AA of FIG.

FIG. 7 is a side view of a fold forming spatula.

FIG. 8 is a sectional view taken along line BB in FIG.

9 is a sectional view taken along line CC of FIG.

10 is a sectional view taken along line DD of FIG.

FIG. 11 is an explanatory diagram of an operation at the time of forming a triple fold.

FIG. 12 is an explanatory diagram of an operation when forming a double fold.

FIG. 13 is an explanatory diagram of a suturing operation.

FIG. 14 is a cross-sectional view of a modified example of the cloth retainer.

FIG. 15 is a front view of FIG.

FIG. 16 is a plan view of a hanging hook for a curtain.

FIG. 17 is a cross-sectional view of the cloth retainer when sewing the hanging hook for the curtain.

[Explanation of reference symbols] F: curtain material, 1: curtain hanging hook, 2: support plate, 3: slide hook, 3a: slide block, 1
1: head arm, 12: sewing needle, 13: table,
14: cloth support plate, 15: cloth retainer, 17: guide plate, 1
9: Pressing lever, 19a: L-shaped lever, 19b: Pressing bar, 19c: Recessed portion, 26: Fixing needle, 31, 3
2: Spatula for forming a fold valley, 51, 52, 53: Spatula for forming a fold mountain.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Kazuhisa Mizuta 190 Far East Industrial Machinery Co., Ltd., Tatsunocho, Tatsuno-cho, Hyogo Prefecture Inside (72) Inventor Satoshi Nishikawa 190 Far East Industrial Machinery Co., Ltd., Tatsuno-cho, Tatsuno-shi, Hyogo Prefecture (72) Inventor Koroshin Shin 190 Far East Industrial Machinery Co., Ltd. Tatsuno-cho, Tatsuno-shi, Hyogo Prefecture Far East Industrial Machinery Co., Ltd. (72) Inventor Yasuaki Matsui 190 Far East Industrial Machinery Co., Ltd. Tatsuno-cho, Tatsuno City, Hyogo Prefecture

Claims (4)

[Claims] 1. A cloth support plate and a cloth presser for sandwiching a curtain material are sewn while being moved back and forth and left and right along the upper surface of a table of the sewing machine. A widthwise edge,
Three pleats for forming folds, which have needle grooves in the front-rear direction that are opened at a plurality of points on this edge, are provided in parallel in the vertical direction and are movable back and forth in the front-rear direction. Between the table and the table, two fold forming spatula having a widthwise edge facing the fold forming spatula side are provided so as to be movable back and forth in the sewing machine width direction, and the cloth support plate and the cloth retainer are provided. A fold removing device for a curtain, in which needles for fixing a curtain material are provided above and above the plurality of needle grooves of a fold forming spatula that have been inserted between the fold forming device, to form the above three folds. The central spatula of the spatula is formed so as to be able to move forward and backward so that the remaining two spatula-forming spatulas can protrude toward the table side, and the vertical intervals of the spatula-forming spatula and the spatula-forming spatula are opened and closed. Curtain fold removal device characterized by being freely formed . 2. The curtain fold removing device according to claim 1, wherein the fold forming spatula is capable of advancing and retracting in both the width direction and the front-back direction. 3. A center one of the three pleat forming spatulas is biased by a spring so that the spatula is projected toward the table side more than the remaining two spars, and is retracted against the bias of the spring. 3. The curtain fold removing device according to claim 1, further comprising a locking device for fixing the retracted position in the retracted position. 4. The cloth retainer has a "U" shape on the rear side of the guide plate of the sewing machine needle, which comprises a pair of left and right levers extending forward from the rear side and a width-direction retaining bar connecting the tip ends of the levers. The presser lever of is connected to swing up and down,
The curtain according to any one of claims 1 to 3, wherein the tip end is biased downwardly, and a recess for letting out a slide block of the slide hook of the plastic curtain hanging hook is formed on the lower surface of the pressing bar. Fold device.