JPH07213769A - Device for sewing curtain suspension hook - Google Patents

Abstract

PURPOSE:To correctly hold a curtain suspension hook made of plastic so that the fitting position is not drifted or bent when it is sewn to the top section of a curtain by a sewing machine. CONSTITUTION:A chuck 35 capable of horizontally holding the upper end of a curtain suspension hook 10 so that the upper end faces the rear of a sewing machine is provided movably between the waiting position behind a sewing needle 19 and the sewing position directly below the sewing needle along the surface of a sewing head 15. A bar 58 for setting the pleat position when a curtain F is folded into two is provided below a head arm of the sewing machine, and a longitudinally movable presser plate 43 coupled with the upper face of the suspension hook 10 located on a throat plate 16 is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is to ensure that when a plastic hanging hook for a curtain is sewn to the top of the curtain with a sewing machine, the attachment position of the hanging hook can be accurately maintained without being displaced or bent. The present invention relates to a sewing device that is made possible.

[0002]

2. Description of the Related Art A hanging hook for a curtain is known which is made of plastic such as polyacetal and is attached to the top of the curtain by sewing. An example thereof is shown in FIG. The hanging hook 10 is composed of a vertically long support plate 11 and a slide hook 12 that can be locked at an arbitrary height (vertical position in FIG. 7) with respect to the support plate 11. The support plate 11 is formed into a vertically long thin plate, and is provided with a vertical flange 11a and a rack 11b on both front and back surfaces thereof. The flange 11a is approximately at the center in the width direction, and the rack 11b is one edge. It is projected so as to be located in the vicinity. In addition, the above rack 1
1b is a ratchet-shaped additional tooth formed such that the inclined surface of the additional tooth is on the upper side and the locking portion is on the lower side. On the other hand, the slide hook 12 is provided with a block 12a that is slidable along one edge of the support plate 11 at the base thereof, and a locking claw 12b that meshes with the racks 11b on the front and back sides of the support plate 11 is provided on the block 12a. It is provided.

When the curtain hanging hook 10 is attached to the ceiling of the curtain F, the curtain F is folded vertically and the hanging hook 10 is vertically inserted from the top inside the fold Fa ( (See FIG. 8), the ceiling of the curtain F is placed together with the hook 10 on the bed 15 of the sewing machine and the table (not shown) surrounding the bed 15, and the hanging hook 10 is placed on the right side of the flange 11a of the support plate 11. The attachment portion 11c is positioned on the needle plate 16, and then the sewing machine is driven to feed the feed dog 1 provided on the needle plate 16.
The curtain F is sent back and forth together with the hanging hook 10 by the action of 7 and 18, and at the same time, the sewing machine needle 19 is moved up and down to sew the top of the curtain F, and then the curtain F is removed from the sewing machine and the vertical chain line is drawn. As shown in, the outer side of the sewn portion of the curtain F was opened and the slide hook 12 was exposed to the back side of the curtain F.

[0004]

Conventionally, the hanging hook 10 for the curtain is sandwiched between the folding folds of the curtain F folded in half and a predetermined distance away from the fold line, and the hanging hook 10 is held.
Since they were hidden by the curtain F and were hidden by the curtain F, and they were placed on the sewing machine bed 15, the position where they are placed varies, and the hook 10 moves inside the curtain F. Was. Further, since the block 12a of the slide hook 12 has a large thickness and the support plate 11 has a small thickness, the curtain F and the feed dogs 17, 1
It was easy for the contact pressure between the rollers 8 to partially change and the feed rate to fluctuate, and for both ends of the support plate 11 to sway left and right. Therefore, there have been problems such as variations in the distance between the seam and the flange 11a, and the seam being inclined with respect to the flange 11a.

The conventional sewing machine is a bed 1 of the sewing machine.
5 and the surface of the needle plate 16 are at the same height, the support plate 11 of the hanging hook 10 cannot contact the needle plate 16 evenly and is inclined, and the inclination angle is the block 12a of the slide hook 12. The presence or absence of the stitches causes the variations in the stitches to be further increased. Then, in order to facilitate the sewing, it was attempted to remove the slide hook 12 and place only the support plate 11 on the bed 15 and the needle plate 16, but the support plate 11 cannot contact the needle plate 16 flatly. There was no change in the points and the effect was insufficient.

A first object of the present invention is to accurately guide the hanging hook for curtain to a predetermined position of the sewing machine necessary for sewing, and fix the hanging hook at the predetermined position while setting the curtain. That is. A second purpose is to correctly guide the above-mentioned hanging hooks sent back and forth together with the curtain during operation of the sewing machine in the front-rear direction so as not to swing to the left and right, and to stitch the stitches in a straight line parallel to the length direction of the hanging hooks. In other words, it is easy to form without skill. Also, the third
The purpose of this is to fix the hanging hook on the curtain by stopping the above hanging hook at a predetermined position on the bed of the sewing machine and regulating the position of this fold line when folding the top part of the curtain on the bed. It is to make the distance from the position to the fold uniform.

A fourth object is to allow the supporting plate of the hanging hook to come into flat contact with the needle plate, thereby further reducing the variation in stitches. Furthermore, the fifth
The purpose of is to automatically supply a large number of the above-mentioned suspension hooks one by one from the standby position behind the sewing machine needle to the sewing position just below the sewing machine needle.

[0008]

The first object of the present invention is to provide an upper end of a vertically extending plastic hanging hook for a curtain, which is attached to the top of the curtain by sewing, so that the upper end is behind the sewing machine. , The side where the operator is located is the front), and the chuck that can be horizontally clamped is moved along the bed surface of the sewing machine between the standby position behind the sewing machine needle and the sewing position just below the sewing machine needle. It is achieved by providing as much as possible. As described above, the curtain hanging hook is composed of a vertically long thin plate-like support plate and a slide hook that can be locked at an arbitrary height on one edge of the support plate. The other edge of the plate is sandwiched between the folds of the curtain and is sewn, and in addition to the one shown in FIG. 7, the flange 11 of FIG.
The positions of the rack 11b and a are exchanged, and the base block 12 of the slide hook 12 is attached to the flange 11a along the edge on one side.
It is possible to use those in which a is slidably fitted and the engaging claws are projected on the central rack side of the base block 12a, and those in which the mounting portions 11c of these support plates 11 are made of cloth.

A second object is to provide a longitudinal guide shaft on the extension side of the head arm with respect to the sewing machine needle, and to incline the guide shaft from the guide shaft toward the needle plate immediately below the sewing machine needle, This is achieved by attaching a pressing plate, the lower end of which is formed so as to be engageable with the upper surface of the hanging hook on the needle plate, so as to be slidable and slidable along the guide shaft. Although the guide shaft may be omitted and the pressing plate may be hung from the head arm or the like, by attaching the pressing plate to the guide shaft as described above, stability is improved and skill in operation is improved. Becomes unnecessary.

The above third object is achieved by providing a positioning means for setting a fold position when the curtain is folded in two, under the head arm of the sewing machine.
As the positioning means, a bar in the front-back direction on which the fold loop of the curtain can be hung, a vertical plate or bar on which the tip of the fold loop can be applied, or a length measurement for confirming the position of the fold It is possible to use a scale, but it is a bar in the front-rear direction, the rear end of which is supported so that it can be moved back and forth in the front-rear direction with respect to the rear standby position, and the width-direction position can be set arbitrarily. The above-mentioned structure is preferable because it has few errors and is easy to operate.

The fourth object is achieved by forming a guide step portion for horizontally supporting the curtain suspension hook on the bed and the needle plate of the sewing machine and enabling the front-back slide. A fifth object is to provide a hanging hook magazine for accumulating and storing a large number of hanging hooks for curtains in a row in front of the chuck at the standby position. This is achieved by forming each piece so as to be extruded.

[0012]

[Operation] The upper end of the curtain hanging hook is horizontally clamped by the chuck at the standby position so that the upper end faces the back of the sewing machine, and the above hanging hook is advanced to the sewing position, after which the top of the curtain is folded in two. , Put it on the bed with its folds facing the base of the sewing machine head arm and the top facing the back of the sewing machine, and insert the lower part of the two-fold curtain between the bed and the hanging hook, On top of the hanging hook. Then, lower the cloth retainer of the sewing machine to press down the curtain and the attachment part of the hanging hook from above, and then retract the chuck to the standby position, and the hanging hook is clamped at the predetermined position of the curtain. Left in. Therefore, when the sewing machine is driven while supporting the hanging hook from above the curtain with a hand or an arbitrary jig, for example, a pressing plate described later, the curtain is sent back and forth together with the inside hanging hook in synchronization with the vertical movement of the sewing machine needle. It is sewn and the hanging hooks are attached in place in the correct position. It should be noted that, after the curtain folded in two is installed on the bed, the above chuck may be advanced to allow the hanging hook to enter the upper and lower curtains.

In the above apparatus, when a pressing plate movable back and forth along the guide shaft is provided, after setting the curtain on the bed as described above, the lower end of the pressing plate is placed on the upper curtain. When the sewing machine is driven while pressing the lower end of the pressing plate against the hanging hook and engaging the lower end of the pressing plate with the hanging hook and holding the pressing plate by hand, the curtain moves back and forth together with the inner hanging hook in synchronization with the vertical movement of the sewing machine needle. The hanging hook engages with the pressing plate via the upper curtain, and the upper end of the pressing plate moves forward and backward by being guided by the guide shaft in the front-rear direction. It is fed straight in the direction, and accurate seams are easily formed. Even if the guide shaft is omitted and only the pressing plate is supported by hand, the hanging hook can be easily supported in the correct posture as compared with the case where the hanging hook is directly supported on the curtain by hand.

In the above apparatus, when the positioning means for setting the fold position of the curtain is provided, the fold of the curtain is always formed at the same position on the bed.
The width of the pleats at the hook attachment part is uniform. When a bar in the front-rear direction is provided as the positioning means, the fold portion of the curtain can be hung on the bar to set the fold position, which facilitates the operation and makes the width of the fold more uniform.

Further, in the above apparatus, when the guide step portion is formed on the bed and the needle plate, the curtain hanging hook contacts the guide step portion through the curtain and is guided by the guide step portion to move forward and backward. Since the sliding hook slides, the rattling and shaking when the suspension hook slides is reduced, and the linearity of the seam and the parallelism with respect to the length direction are improved.

When a hanging hook magazine is provided in addition to the above apparatus, one hanging hook is sequentially taken out from the lower end of the hanging hook magazine for each reciprocation of the chuck and supplied below the sewing machine needle. Therefore, it is possible to automatically supply the hanging hook.

[0017]

EXAMPLE In FIG. 1, 15 is a bed of the sewing machine,
16 is a needle plate, 19 is a sewing machine needle, 20 is a cloth retainer,
A head arm (not shown) is located above the bed 15 (on the front side of the drawing). Then, a jig receiving base plate 21 is fixed on a table (not shown) behind the bed 15, a chuck device 30 is provided substantially at the center of the base plate 21, and a holding device for the hanging hook 10 is provided on the left side thereof. 40 and a positioning means 50 on the right side.

In this embodiment, the needle plate 16 is formed in a substantially semi-circular shape, and is fixed on the bed 15 so that the straight line portion of the needle plate 16 faces the front-rear direction at the lower left of the sewing machine needle 19. As shown in FIG. 2, the needle plate 16 is formed with a guide step portion 16a along a straight line in the front-rear direction at a position separated by a few millimeters from right below the sewing machine needle 19 to the left, and has a strip shape on the left side thereof. The upper surface of the portion 16b is lower than the upper surface of the right semicircular portion 16c, and is substantially at the same height as the bed 15. The step difference of the guide step 16a is set to about ½ of the thickness of the block 12a of the slide hook 12 of the curtain hanging hook 10.

The bed 15 before and after the needle plate 16
A contact plate 22 (see FIGS. 1 and 3) having the same height as the semicircular portion 16c is fixed on the upper side, and the left edge 22a of the corresponding plate 22 constitutes an extension of the guide step 16a of the needle plate 16. ing. Therefore, when the mounting portion 11c of the support plate 11 of the curtain hanging hook 10 is placed on the semi-circular portion 16c of the needle plate 16 and the flange 11a is hooked on the guide step 16a,
The mounting portion 11c is in flat contact with the semicircular portion 16c.

In the chuck device 30 (see FIGS. 1 and 4), the slide base plate 32 is placed on the guide rail 31 in the front-rear direction fixed to the jig receiving base plate 21 via the slide block 32a. On the front plate 32b of the plate 32,
The jig receiving base plate 21 is provided on the right side of the guide rail 31.
The piston rod 34a of the chuck air cylinder 34, which is fixed via the upper bracket 33, is connected, and the air-operated chuck 3 is connected to the left side plate 32c of the slide base plate 32.
5 is fixed.

The chuck 35 is provided with two upper and lower actuating shafts 35a which project forward and open and close. The upper and lower actuating shafts 35a, 35a are respectively seen from the front (see FIG. 4).
The upper ends of the S-shaped connecting fittings 36, 36 are connected, and match rod-shaped holding claws 37, 37 are provided at the lower ends of the connecting fittings 36, 37 so as to project forward. The holding claws 37, 37 have an elastic coating layer 37 a (see FIG. 3) made of a rubber-like elastic body such as rubber or urethane rubber at the tip thereof, and support plate 1 for the hanging hook 10.
The groove portion between the flange 11a at the upper end of 1 and the rack 11b is clamped from above and below (see FIGS. 3 and 4).

In FIG. 1, the pressing device 40 located on the left side of the chuck device 30 extends in the front-rear direction on the upper end of a bracket 41 protruding from the jig receiving base plate 21 and extends upward of the bed 15. It is formed by supporting the rear end of the guide shaft 42 and attaching a pressing plate 43 to the free end side of the guide shaft 42. The pressing plate 43 extends obliquely from the guide shaft 42 toward the needle plate 16 (see FIG. 2), and has a lower end between the flange 11 a of the support plate 11 of the hanging hook 10 and the rack 11 b placed on the needle plate 16. Is formed to a length that reaches the groove portion of the, width (length in the front-rear direction along the guide shaft 42)
Are formed substantially the same as the needle plate 16 (see FIG. 3).

In this embodiment, the pressing plate 4 is
The center of the lower end of 3 is notched so that the foot parts 43a, 4
3a is formed, and the legs 43a, 43a straddle the slide hooks 12 of the hanging hooks 10 and engage with the groove-shaped portions at both ends of the support plate 11. On the other hand, on the lower surface of the upper end of the pressing plate 43 (see FIG. 2), the sliding bar 4 in the shape of a square rod is provided along the upper edge thereof.
4 is fixed, and the guide shaft 42 is inserted into a long hole 44a in the length direction that penetrates the slide metal 44 in the width direction.

In FIG. 1, the positioning means 50 located on the right side of the chuck device 30 has a slide base plate 52 mounted on a guide rail 51 in the width direction, and a positioning air cylinder 53 and a shaft guide 54 are mounted on the slide base plate 52. Are arranged side by side, and the front ends of the piston rod 53a protruding forward of the positioning air cylinder 53 and the slide shaft 55 in the front-rear direction supported by the shaft guide 54 are connected by links 56, and the end of the left slide shaft 55 is connected. The rear end of the bar 58 in the front-rear direction is connected to the front end of the arm 57 that is fixed to and extends to the left.

In the above structure, as shown in FIG.
When the slide base plate 32 of the chuck device 30 and the piston rod 53a of the positioning means are in the respective rear standby positions shown by solid lines, the slide base plate 52 of the positioning means 50 can be tightened with the push screw 52a to a desired position on the guide rail 51. The upper end of the support plate 11 of the curtain suspension hook 10 with the slide hook 12 attached is clamped between the pair of upper and lower clamping claws 37, 37 at the front end of the chuck device 30. Next, the chuck air cylinder 34 and the positioning air cylinder 53 are respectively actuated, and the former projection of the piston rod 34a advances the suspension hook 10 onto the needle plate 16 via the chuck slide base plate 32 and the chuck 35. Further, the latter projection of the piston rod 53a advances the positioning bar 58 onto the bed 15 via the link 56 and the arm 57.

Next, the top of the curtain F is folded in two (see FIG. 2), and the fold Fa faces the right (the base side of the head arm), and the top faces the back of the sewing machine (paper back side). 15 and hook the fold line Fa on the positioning bar 58 to attach the lower part of the curtain F to the needle plate 1.
6 and the hanging hook 10, and the curtain F is set by stacking the upper part on the hanging hook 10. Then, the cloth presser 20 in the raised position is lowered, and the upper curtain F, the support plate 11 of the hanging hook 10 and the lower curtain F are sandwiched and fixed between the cloth presser 20 and the needle plate 16. Next, the chuck 35 is operated to open the pair of upper and lower clamping claws 37, 37, and the above-mentioned chuck air cylinder 3
4 and the piston rods 34a, 53a of the positioning air cylinder 53 are retracted to retract the holding claw 37 and the positioning bar 58 to the initial standby position.

Next, the pressing plate 43 is moved from the standby position in FIG. 1 onto the needle plate 16, and the feet 43a, 4 at the front and rear ends thereof are moved.
3a is pressed from above the upper curtain F to the groove portions at both ends of the support plate 11 of the hanging hook 10, and when the sewing machine is driven in this state, the curtain F is synchronized with the vertical movement of the sewing needle 19. The hanging hook 10 inside the needle plate 16
While being guided by the guide step portion 16a and the left edge 22a of the contact plate 22 to move back and forth, the slide metal 44 at the upper end of the pressing plate 43 is guided by the guide shaft 42 to move back and forth. In this case, the slide metal 44 has a long hole 44a that is parallel to the length direction of the pressing plate 43, and the slide metal 44 can move up and down. Therefore, the pressing plate 4 can be moved in accordance with the thickness of the curtain F and the like.
The height and width direction position of the third leg 43a are automatically adjusted. In addition, the hanging hook 10 has a guide step portion 16a of the needle plate 16.
Further, the movement is smoothly performed because it slides back and forth while being guided by the left edge 22a of the contact plate 22.

FIG. 5 shows a modification of the positioning means, in which a positioning plate 59 is erected vertically on the bed 15 on the right side of the needle plate 16 (the base side of the head arm), and the crease Fa of the curtain F is plate 59. It is positioned by contacting with.
In this case, it is preferable that the widthwise position of the plate 59 be adjustable.

FIG. 6 shows an example in which a magazine for the hanging hook 10 is provided. Reference numeral 35 denotes a chuck in the same standby position as described above. A pair of upper and lower clamping claws 37, 37 are fixed to the upper and lower actuating shafts 35a, 35a via a connecting fitting 36, and the lower end of the upper connecting fitting 36 is fixed. A receiving plate 36a extending rearward is fixed to. Then, the claw 3 at the standby position
A hanging hook magazine 38 is fixed in front of 7. This hanging hook magazine 38 is formed in a vertically long box shape so that a large number of hanging hooks 10 can be stored in one row in the vertical direction, and window holes 38a are opened in its front plate, rear plate and paper back side plate. The holding claw 37, the receiving plate 36a, and the lower end horizontal portion of the connecting fitting 36 can be inserted into and removed from the magazine 38 through the window hole 38a.

In the apparatus shown in FIG. 6, the holding claws 37, 37 at the standby position are moved forward with the claws 37, 37 open, and the claws 37, 3 are opened.
When 7 hits the rear end of the hanging hook 10 at the lower end in the magazine 38, the holding claws 37, 37 are once stopped and then closed to hold the hanging hook 10, and then the needle plate 16 is placed. To move forward. And the curtain F
After setting, retreat to the standby position.
Since the rest of the hanging hooks 10 in the magazine 38 is prevented from falling by the receiving plate 36a at the rear of the 7, the above retreat is smoothly performed.

[0031]

According to the invention described in claim 1, as described above, since the chuck for holding the upper end of the curtain suspension hook is provided to move forward and backward, the curtain suspension hook is arranged above the needle plate. After fixing it with the zipper, set the two-fold curtain on the bed in this state, lower the cloth holder of the sewing machine and press the curtain and the hanging hook between the upper and lower curtains onto the needle plate, then open the chuck and move backward. Can be made. Therefore, the hanging hook for the curtain can be accurately guided to the predetermined position of the sewing machine necessary for sewing, and the hanging hook can be fixed at the predetermined position while setting the curtain. You can attach the hanging hook in the front-back direction in the correct posture.

According to the invention described in claim 2, in the invention described in claim 1, a pressing plate which engages with a hanging hook placed on the needle plate and moves back and forth is provided. After the chuck is retracted, the lower end of the pressing plate is engaged with the hanging hook sandwiched inside the folded curtain through the curtain, and in this state the pressing plate is moved parallel to the guide axis in the front-rear direction. be able to. Therefore, while the sewing machine is in operation, the above-mentioned hanging hook that is sent back and forth together with the curtain is correctly guided in the front-back direction so that it does not shake to the left and right, and the stitches are straightened in parallel to the length direction of the hanging hook without skill. It can be easily formed.

Further, in the invention described in claim 3, in the invention described in claim 1 or 2, since the positioning means for setting the fold position of the curtain is provided, the fold of the curtain is always on the bed. Are formed at the same position in the curtain, and the width of the pleats at the hanging hook attachment portion of the curtain is uniform. Further, in the invention described in claim 4, since the bar in the front-back direction is provided as the positioning means, it is possible to set the fold position by hanging the fold portion of the curtain on the bar. It is easy to operate, the width of the folds is more uniform, and the position of the bar in the width direction can be adjusted, so the width of the folds can be set to a desired size, and the bar is formed to be retractable. Therefore, when the sewing machine is driven after setting the fold, the bar can be retracted to the standby position where it does not contact the curtain.

According to a fifth aspect of the present invention, a guide step portion is formed on the sewing machine bed and needle plate of each of the above devices so that the curtain hanging hook is horizontally supported and can be slid forward and backward. Therefore, rattling and swaying when the suspension hook slides is reduced, the straightness of the stitches and the parallelism with respect to the length direction are improved, and it is not necessary to remove the slide hook when sewing the suspension hook.

According to a sixth aspect of the present invention, in each of the above devices, a hanging hook magazine is provided, and the hanging hooks are pushed out one by one from the lower end when the chuck advances. It is possible to take out the hanging hooks one by one from the lower end of the hanging hook magazine one by one for each reciprocation of the chuck and supply the hanging hooks below the sewing machine needle, which enables automatic feeding of the hooks.

[Brief description of drawings]

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

FIG. 2 is a cross-sectional view of a needle plate portion for explaining a sewing operation.

FIG. 3 is a plan view of a needle plate portion.

FIG. 4 is a front view of a chuck.

FIG. 5 is a cross-sectional view showing a modified example of the positioning means.

FIG. 6 is a partially cutaway side view of the magazine.

FIG. 7 is a plan view of a hanging hook for a curtain.

FIG. 8 is a cross-sectional view of a needle plate portion for explaining a conventional sewing operation.

[Explanation of symbols]

F: Curtain, Fa: Fold, 10: Hanging hook for curtain, 11: Support plate, 11a: Flange, 11b: Rack, 11c: Mounting part, 12: Slide hook, 12
a: block, 12b: nail, 15: bed, 16: needle plate, 16a: guide step, 19: sewing needle, 21: base plate,
22: Contact plate, 22a: Left edge (extension of guide step), 3
0: Chuck device, 31: Guide rail, 32: Slide plate, 35: Chuck, 36: Connecting metal fitting, 37: Claw for clamping, 38: Hanging hook magazine, 40: Holding device, 4
2: guide shaft, 43: pressing plate, 44: slide metal, 50:
Positioning means, 51: guide rails, 52: slide base plate,
58: bar, 59: board.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yasuaki Matsui 190 Tatsunocho, Tatsuno-cho, Tatsuno-shi, Hyogo Far East Industrial Equipment Co., Ltd.

Claims (6)

[Claims] 1. A chuck capable of horizontally sandwiching the upper end of a plastic hanging hook for a curtain, which is vertically formed so as to be attached to the top of the curtain by sewing, so that the upper end faces the rear of the sewing machine. A sewing device for a hanging hook for a curtain, which is provided so as to be movable along a surface of a sewing machine bed between a standby position behind the sewing machine needle and a sewing position directly below the sewing machine needle. 2. A longitudinal guide shaft is provided on the extension side of the head arm with respect to the sewing machine needle, and the guide shaft is inclined from the guide shaft toward the needle plate directly below the sewing machine needle, and the lower end is above the needle plate. 2. The hanging hook sewing device for a curtain according to claim 1, wherein a pressing plate formed so as to be engageable with the upper surface of the hanging hook is attached slidably and slidably. 3. The sewing apparatus for a curtain hanging hook according to claim 1, wherein a positioning means for setting a fold position when the curtain is folded in two is provided below the head arm of the sewing machine. 4. The positioning means is a bar in the front-rear direction, the rear end of which is supported so that the bar can be moved forward and backward between the lower side of the head arm and the rear standby position, and the position in the width direction can be adjusted. The hanging hook sewing device for a curtain according to claim 3, which can be arbitrarily set. 5. The hanging hook for curtain according to claim 1, wherein the sewing bed and the needle plate are provided with guide step portions that horizontally support the hanging hook for curtain and allow the curtain hook to slide in the front-rear direction. Sewing machine. 6. A hanging hook magazine for stacking and storing a large number of hanging hooks for curtains in a row is provided in front of the chuck at the standby position, and the hanging hooks are pushed out one by one from the lower end when the chuck is advanced. The sewing device for a curtain hanging hook according to any one of claims 1 to 5.