JPH08155169A - Puckering in sewing of curtain and device therefor - Google Patents

Abstract

PURPOSE: To provide possibility of perpendicular intersection with the material to be sewn to produce a curtain without causing tumble or collapse of crests and/or bottoms by pinching the left and right ends of a pucker scale, slackening it so that puckers are formed, and processing the top of the material bit by bit so that crests and bottoms are generated in a certain specified proportion. CONSTITUTION: When puckers 1 consisting of crests 2 and bottoms 3 are formed and fed in sewing a curtain, the left and right ends of a pucker scale having a length required to form puckers 1 at the top of a curtain material 4 are pinched and moved toward the center for the same distance followed by slackening so that pucker formation is commenced. At the same time, the top of the curtain material 4 is processed bit by bit in such a manner that at least the area between the left and right ends of the apex outer surface of each crest 2 is commenced later than the crest formation while at least the left and right ends of the inner surface of pucker 1 is lifted earlier than the movement and in a proportion of 3:1 relative to the distance between the left and right ends of the pucker scale so that crests 2 are generated and then depressed with a force weaker than the lifting force and until no margin is left any more for puckering so that bottom formation is completed.

Description

Detailed Description of the Invention

[0001]

[Field of Industrial Application] The invention of this patent application (hereinafter,
The present invention relates to a technique of a method and a device for forming pleats before sewing when sewing a sewing machine for fixing a plurality of sets of pleats of a curtain with a bar tacking sewing machine or the like.

[0002]

2. Description of the Related Art Recently, curtains for sewing pleats that are made to order are sewn with a sewing machine, so that a feeling of luxury and luxury is required.
The fabric is thicker than the ready-made curtains, and the number of piles in each set is at least 3 to increase the use of the fabric. It is required that the height is constant without unevenness in height and its shape is parallel to the fabric orthogonally without collapse or collapse, and the interval between each pleat is also uniform without unevenness, especially in the width direction. There is a strong demand that the finished size of the product must exactly match the lateral size of the window of the ordering home and that a slightly longer product is allowed but a shorter product is not allowed.

The work order and the defect in the above-mentioned conventional technique are as follows. A. Work order a. Interlock stitching: When the curtain fabric has a width of about 4 m, a normal fabric manufactured to have a width of about 2 m is placed on the same plane with the left and right end faces in the width direction, and the contact parts are oversewn. , Bend it in two and sew the bent part with the lock seam. b. Left and right ear stitches: A 2 cm hem is formed by stitching the left and right ends of a cloth with a width of about 2 m with three lock stitches. c. Hem sewing: A 15 cm hem is formed by stitching the bottom end of a fabric with a length of about 2 m with three lock stitches. d. Interlining sewn on the upper end of the fabric with interlock chain stitches. e. Sew both left and right ends of the fabric …… Fold the upper end of the fabric in half around the lower end of the interlining, and then sew the left and right ends of the fabric with the lock stitches. f. Calculation of the size of each part (a, b, c, in Fig. 1) 1)
Required dimensions for all pleats = Fabric width I-Finishing dimension II +
(Ear width A x 2), 2) Required size B for each pleat set = Required size for all pleat sets / Total number of pleat sets, 3) Size C for each pleat space =
Each calculated value such as finished dimension II / (total number of folds set-1) is calculated. g. Feeding the space between the folds of the fabric …… Measure the dimension C of the space between the folds and feed the fabric in the width direction, then stop. h. Feeding the required size of the folds of the fabric ... Measure the required size B for each fold set and send the fabric in the width direction, then stop. i. Formation of folds (FIG. 2a) ... The fabric 4 stopped by feeding by h is manually grasped by the size B to form the first folds 1. j. The base portion of the pleats 1 formed by the pleats 1 (Fig. 2a) is linearly laid parallel to the longitudinal direction of the cloth 4 to form the bar tacks D by the seams. k. Formation of fold ridges and valleys (FIG. 2b) ... The tip of the fold 1 formed by i is manually folded inward into three ridges 2 and two valleys 3. l. Stitching of the folds and troughs (Fig. 2b) ... The basal portions of the ridges 2 and troughs 3 of the pleats 1 formed by k are sewn together with button stitches. m. The following is the formation of the last pleats 1
The above steps g to 1 are repeated until the valley 3 is formed and the seams are sewn.

B. Defects due to the above work a. ... Each time when the formation of the pleats 1 and the sewn-up (FIG. 2a) and the formation of the peaks 2 and valleys 3 of the folds 1 and the sewn-up (FIG. 2b) of the above-mentioned i, j, k, l work are performed. And the above g,
As in the case of h work, it is necessary to measure the distance C between each pleat set and the required size B for each pleat before feeding the fabric 4, and the measurement and feeding of the fabric are usually performed. Since there are about 17 pleats, the fold spacing is 16
Since a total of 33 times, which is the required number of times of folds and 17 times of pleats, are also measured and the material is fed, an error occurs in each dimension and an error also occurs in the finished dimension II in the lateral width direction of the entire material. b. ...... Since the folds 1 and the peaks, valleys 2 and 3 in the above i and k operations are formed manually, errors occur in the height and depth dimensions of each fold 1, peaks 2 and valleys 3. It will fall or collapse and will not be orthogonal to the fabric, and your hands and fingers will be fatigued.

[0005]

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention The present invention is deficient in the above-mentioned prior art: each pleating set interval C is performed a number of times when the curtain pleats are sewn on a sewing machine.
And the dimensional error and the finished lateral width error caused by the measurement of the required dimension B for each fold set and the feeding of the fabric, and the folds 1, ridges 2, and the ridges 2 caused by the manual operation.
Dimensional error of the valley 3, collapse and collapse of the shape, and diagonal intersection with the fabric ─
The purpose is to eliminate ──.

[0006]

SUMMARY OF THE INVENTION The present invention is characterized by adopting the following method in order to solve the above-mentioned drawbacks of the prior art when forming and supplying the pleats in the sewing machine of the curtain. The folds of the length required to form pleats consisting of peaks and valleys are formed on the upper end of the curtain fabric.The left and right ends of the pleats are clamped and moved toward the center by the same distance to relax and start fold formation. At least the left and right ends of the inner surface, and 3 for each moving distance of the left and right ends of the pleated scale:
With a ratio of 1 and forming a mountain by pushing up faster than the above movement, at least between the left and right ends of the outer surface of the mountain top, starting later than the mountain forming and weaker than the pushing force and the fold margin. Press down until there is no more to form a valley.

[0007]

【Example】

The three ridges 2 and the two valleys 3 of the fold 1 in FIG. 2b.
1a, 1b, 1c, the required dimension B for each fold set (hereinafter referred to as "fold fold length B") is the cloth lateral width I, the spacing dimension C of each fold set, and the finished dimension II. If there is a change in the size of the folds, it is necessary to change the height of the ridges 2 and the depth of the valleys 3 of the folds 1 in proportion to the change in the fold length B. If the height of the ridges 2 and the depth of the valleys 3 are kept constant even if the fold length B changes greatly, the fabric 4 becomes excessive when the fold length B changes greatly. , When the mountain 2 is too low and the valley 3 is too deep, the valley protrudes below the fold 1 and the fold length B changes to small.
Is insufficient, mountain 2 is too high, valley 3 is too shallow, mountain 2 and valley 3
The suture to close and becomes impossible.

[0009] The normal process of forming the ridges 2 and valleys 3 of the pleats 1 is performed by placing the horizontally arranged fabric 4 as shown in FIG. The left and right upper and lower clamping plates 5ab and 6ab are clamped, and the left and right upper and lower clamping plates 5 and 6 are moved as shown in FIG. As shown in FIG. 6, the left and right middle projection plates 7 are vertically arranged in the left, right, and center of the fold 1 while forming the fold 1 in the middle.
The abc is lifted and stopped, and the left and right folding plates 8ab vertically arranged between the protruding plates on the left and right above the folds 1 are lowered and stopped until the lower ends thereof come close to the lower ends of the protruding plates. Formed in 3 peaks 2 and 2 valleys 3,
As shown in the figure, in order to make the mountain 2 face the sewing machine stitching portion 9 horizontally, a substrate supporting each sandwiching plate, protrusion plate, and folding plate is rotated 90 degrees counterclockwise, and then the substrate is left. And the peaks / valleys 2 and 3 are supplied to the sewing section 9 of the sewing machine. In addition,
The sandwiching plate, the projecting plate, and the folding plate in FIGS. 6 and 7 are separated from each other in the left-right direction for the sake of illustration, but they are practically in close contact with each other.

Further, in the curtain pleat sewing which is generally performed at present, as shown in FIG. 3, when the maximum value of the pleated length B is about 160 mm, the height of both sides of the three ridges 2 is high. The maximum value of the height is about 30 mm, and when the fold length and the length of B change to the smaller one, the heights of both sides of the mountain 2 also change to the smaller one in direct proportion to the ratio of the two. Has become. When forming the ridges 2 and valleys 3 of the pleats 1 on the cloth 4 as shown in FIGS. 4 to 7 of the preceding paragraph, the left and right upper and lower holding plates 5, 6 are moved to the right and left in the directions in which they are in close contact with each other. Since the folds 1 are formed by moving the same distance, the left and right upper and lower holding plates 5 and 6 move about 80 mm when the pleated length B is about 160 mm as described above (Fig. 5). , The left and right middle protruding plate 7 is about 30 from the bottom of the fold 1.
mm (FIG. 6), and the moving distance between the two becomes about 3: 1. Therefore, the fold main measure B 160
mm- (height of mountain 2 · 30 mm × number of left and right sides of mountain 2 · 2)
= 100 mm ÷ number of sides of valley 3 · 4 = 25 mm, the depth of the valley 3 is 25 mm, and the depth of the valley 3 is 5 mm less than the height of the peak 2, but the depth of the valley 3 at two locations in FIG. The bent portion produces a bulge protruding downward due to the influence of the thickness of the cloth 4, and when the ridges 2 and 3 are sewn in FIG. 2b, the bulge of the valley 3 is absorbed so as not to reach the lower ends of both sides of the ridge 2. Will be done.

Further, for example, the maximum pleated length B in the preceding paragraph
When 160 mm is shortened to 100 mm, the pleated length B is 160 mm-100 mm = 60 mm, and the total movement distance of the left, right, upper and lower holding plates 5, 6 is 6 compared to the maximum length.
Since it is reduced by 0 mm, the left and right moving distances of both holding plates 5 and 6 are reduced by 30 mm from the maximum length, and therefore the ascending distance of the left and right center projection plate 7 is 30 mm which is the left and right moving distance of the left and right holding plates 5 and 6. However, the height of the mountain 2 is 30mm-1, which is less than the maximum length by 10mm of 3: 1.
0 mm = 20 mm is the height of the mountain 2, and the pleated scale B.1
00mm- (height of mountain 2 · 20mm × number of left and right sides of mountain 2 ·
2) = 60 mm / number of sides of valley 3/4 = 15 mm,
The depth of the valley 3 is 15 mm. As above,
When the fold length B is 120 mm or 80 mm, the mountain 2
Has a height of 23.33 mm or 16.667 mm, and the depth of the valley 3 is 18.33 mm or 11.66 mm.
Becomes

The present invention relates to the above paragraphs 0010 and 0011.
In order to achieve the above, the apparatus shown in FIGS. 8 to 10 having the following structure is provided. As shown in FIGS. 8 and 9, vertical L-shaped support bases 10a and 10b which are separated from each other on the left and right sides are fixed to a machine frame (not shown) for supporting the entire apparatus. A screw shaft 11 is provided in the middle of the support bases 10a and 10b in the vertical direction so as to be horizontally rotatable about the axis and immovable in the horizontal direction, and is supported from the left and right ends toward the center in the horizontal direction. A left screw 12a is provided on the left half and a right screw 12b is provided on the right half for supporting. A handle 13 for rotating the horizontal screw 11 is fixed to the right end of the screw shaft 11,
On the outer circumferences of the left and right screws 12a and 12b, vertical plates 14a and 14b, to which nuts fitted to them are fixed, are supported by contacting the horizontal portions of the support bases 10a and 10b.

Small bevel gears 15a and 15b are respectively fixed between the left and right screws 12a and 12b, and large bevel gears 16 meshing with the small bevel gears 15a and 15b, respectively, are fixed to the machine frame. The number of teeth of the small bevel gears 15a, 15b and the large bevel gear 16 is fixed to the upper end of a vertical screw 18 which is vertically supported by the holding plate 17 and is rotatable around the axis and movable in the vertical direction. Ratio is 1: 3. In the middle of the vertical screw 18, a horizontal plate 19 fitted to the outer periphery of the vertical screw 18 and brought into contact with the vertical portion of the holding plate 17 is supported.

A horizontally arranged horizontal body 20 is fixed to the supporting bases 10a and 10b, and left and right upper sandwiching plates 21a and 21b which horizontally project toward the front are slidably supported to the left and right. Since the holding plates are fluids fixed to the left and right of the machine frame, they are fixed to the left and right cylinders 22a and 22b having an actuating member that horizontally moves to the left and right by moving in and out or applying / deactivating electromagnetic force. Left and right lower sandwiching plates 2 are fixed to the sandwiching plates, and left and right cylinders 23a and 23b each having an actuating body that vertically moves up and down are fixed to the upper part of the sandwiching plate.
4a and 4b are fixed to the actuators of the cylinders 23a and 23b,
The upper right holding plates 21a and 21b are supported so as to approach or separate from each other.

A movable body 25 is supported below the middle of the horizontal screw 11 so as to be vertically movable with respect to the machine frame. Three
The left, middle and right projecting plates 26a, 26b, 26c are supported, and a projecting body 27 projecting below the lower surface of the horizontal plate 19 is fixed to the other side surface of the moving body 25. Left protrusion plate 2
To the left of 6a, the left, middle, and right protrusion plates 26a, 26b are attached to the operating body of a cylinder 28 having an operating body that vertically moves up and down.
c is fixed, and the left and right protrusion plates 26a, 26c are fixed to the operating body of the cylinder 29 having the operating body that horizontally moves to the left and right.

As shown in FIG. 10, above the left and right upper sandwiching plates 21a and 21b in the middle of the horizontal screw 11, there is a cylinder 30 having an actuator vertically moving,
Two folding plates 31a, b facing each other above the gap between the vertical, left, middle, and right protruding plates 26a, b, c are fixed.

The cylinders 22a and 22b and the cylinder 28 are
At the same time, the left, right, and upward movements are started, but their continuity is faster in the cylinder 28, slower in the cylinders 22a and 22b, and the cylinder 30 starts the downward movement later than the cylinder 28. To do. The operating force of the cylinder 28 is stronger than the operating force of the cylinder 30, and for example, the former is 4, 5
The latter is 3.5 kg, while the latter is 3.5 kg.

Control device: A control device (not shown) to be applied to the invention of the present application is configured such that each of the above parts is mechanical, electrical, or electric.
To electronically act and act on the next sequence of taps, C
It is configured to be controlled by a microcomputer having a PU. 1) Setting of pleated length b ... Fig. 1a, b, for forming three peaks 2 and two valleys 3 in the fold 1 in Figs. 2a, b.
In order to set the pleated length B, which is the required size for each fold set of c, the handle 13 of FIGS. 9 and 10 is turned clockwise or counterclockwise to provide a pleated provided on the side surface of the vertical portion of the support base 10b. Since the scale B is required, a mark provided on the outer peripheral surface of the handle 13 is aligned with a desired scale indicating the size, and after stopping, the cylinder 22
When a and b are actuated to operate to the left and right of the respective actuating bodies, the left and right upper sandwiching plates 21a and 21b and the lower left and right lower sandwiching plates 24a and 24b below them are moved to the left and right. , Horizontal screw 11
Also rotates clockwise or counterclockwise and stops, and the left and right vertical plates 14a and 14b also move to the left and right, respectively, and stop at the position of the dimension corresponding to the desired pleated length B. Comes into contact with the left and right vertical plates 14a, 14b and then stops, and the left and right opposed faces of the left and right upper and lower sandwiching plates correspond to the pleated length B. 2) Determining the height of the ridge 2 of the pleats 1 ... As shown in FIGS. 8-10, when the horizontal screw 11 rotates, the small bevel gear 15a,
Since b rotates to rotate the large bevel gear 16, the vertical screw 1
8 also rotates, and the number of rotations of the vertical screw 18 is 3: 1 with respect to the number of rotations of the horizontal screw 11 depending on the ratio of the number of teeth of the large and small bevel gears.
When the horizontal plate 19 moves up and down according to the number of rotations of the vertical screw 18 and stops, the moving distance of the horizontal plate 19 becomes 1: 3 with respect to the moving distance of the left and right upper and lower holding plates, and the pleated outline B The ratio of the moving distance of the horizontal plate 19 is 3: 1 with respect to half of the above. 3) Holding the cloth 4 ... As shown in FIG. 4, the left and right sandwiching plates 21a and 21b and the left and right sandwiching plates 21a and 21b are tightened in the left and right directions by making the left and right ends of a part of the fabric 4 partly. 24a, b, and then the left and right cylinders 23a, 23b are actuated and stopped to raise the lower sandwiching plate and bring the lower sandwiching plate into close contact with the right sandwiching plate to stop. When sandwiched between the left and right upper and lower sandwiching plates, the distance in the left-right direction of the cloth 4 corresponds to the size of the pleated scale b set in 1). 4) Formation of pleats 1 ... As shown in FIGS. 5, 8 and 9, when the left and right cylinders 22a and 22b act to actuate the respective actuating bodies to the right and left, the left and right upper and lower clamping plates are in the middle. Since the cloth 4 moves so as to approach, the folds 1 are formed by being raised above the intermediate group of the cloth 4. 5) Formation of ridge 2 ... As shown in FIGS. 6 and 8.9 and the description of 0017, the cylinder 28 also starts to operate at the same time when the left and right cylinders 22a and 22b are actuated, and the ascending speed of the actuating body is left and right. Since the moving speed of the actuating members of the cylinders 22a and 22b is faster than the right and left moving speeds, the folds 1 of the cloth 4 are tensioned without being relaxed, and are raised as the actuating member of the cylinder 28 is raised. Pushed up by the upper end of 26 abc,
Similarly, when the protruding body 27 of the moving body 25 comes into contact with the lower surface of the horizontal plate 19 and stops, the rising of these protruding plates also stops,
As described in 2), the ascending distance (height of the ridge 2) of the projection plates is 1: 3 with respect to the half of the pleated length B described in 1). 6) Formation of valleys 3 ... As shown in FIGS. 6 and 10 and the description of 0017, the folds 1 of the cloth 4 are relaxed because the cylinder 30 starts to move downward more slowly and weakly than the cylinder 28. It is pushed down by the lower ends of the left and right folding plates 31a, 31b that are descended as the actuation body of the cylinder 30 descends without tension, and these folding plates are depressed between the left and right middle protruding plates 26abc and push down the fold 1 of the cloth 4. Immersion will stop when there is no room, and the descending distance of the folding plates will be 5 mm less than the descending distance of the protruding plates as explained in 0010. It is formed 5 mm less than the height.

[0019]

The present invention has the structure of the above-described embodiment and produces an action, and therefore has the following effects. a) Since the ratio of the ascending distance of the left-middle-right projecting plate 26abc and the moving distance of the left and right upper and lower holding plates 21, 24ab to the right and left is always 3: 1, the handle 13 is rotated to make the pleated outline B.
If you set it to the desired dimension, corresponding to it,
The height of the three peaks 2 of the folds 1 can always be formed by the above ratio. b) The descending distance of the left and right folding plates 31ab is such that the left and right upper and lower holding plates 21, 24ab are moving to the right and left, and the left-middle-right projecting plate 2.
Since it descends weaker than 6 abc during ascending and stops even if there is no room for descending with respect to the folds 1, it can always be formed shorter than the height of the mountain 2 by 5 mm. C) The rising speed of the left-middle-right projecting plate 26abc is faster than the moving speed of the left-right upper-lower sandwiching plates 21, 24ab to the right and left, and the lowering of the left-right folding plate 31ab is performed by the left-middle-right projecting plate 26a.
Since the pleats 1 of the fabric 4 are always tensioned without being relaxed since they start later than the rise of bc and the pressure is weak, the ratio of the height of the ridge 2 to the please length B is The size and ratio of the height of the ridge 2 to the depth of the valley 3 and the dimension are always accurate, and the shapes of the ridges and valleys are perpendicular to the fabric without any collapse or collapse, and may cause fatigue on the hands and fingers. Absent.

[Brief description of drawings]

FIG. 1 shows a method of calculating dimensions of each part required for forming a fold of a, b, and c curtains.

FIG. 2 shows formation and stitching of fold peaks and troughs of a and b curtains.

FIG. 3 shows the dimensions of the folds and ridges of the curtain in the unfolded state.

[Figure 4]

FIG. 7 shows the order of forming the folds, peaks and valleys of the curtain and the state of supply to the sewing machine.

FIG. 8 is a right perspective view of the device.

FIG. 9 is a front front view of the device.

FIG. 10 is a right side view of the device.

[Explanation of symbols]

 1 Hida 2 Mountain 3 Valley 4 Fabric 10a, b Left / right support 11 Horizontal screw 12a, b Left / right screw 15a, b Small bevel gear 16 Large bevel gear 21a, b Left / right / upper clamping plate 24a, b Left・ Right / bottom clamping plate 26a, b, c Left / center / right protrusion plate 31a, b Left / right folding plate

Claims (2)

[Claims] 1. The left and right ends of a please measure having a length required to form pleats composed of peaks and valleys at the upper end of the curtain material,
Clamp and move toward the center for the same distance to relax and start pleat formation, and at the same time, make at least the left and right ends of the inner surface of the pleat, and use a ratio of 3: 1 for each moving distance of the left and right ends of the pleat measure. While pushing up faster than the above-mentioned movement to form a crest, at least between the left and right ends of the outer surface of the crest of the crest, start later than the crest formation and weaker than the pushing force and there is no crease margin. A method of forming pleats in the sewing machine of the curtain, in which the upper end of the curtain material is sequentially operated, such as lowering to form a valley. 2. A holding plate which vertically holds the left and right ends of the upper end of the curtain material arranged horizontally and moves horizontally to the left and right, and to the left and right of the center of the horizontal screw which rotates around the horizontal axis, to the center of each other. Facing the left and right screws installed in the opposite direction and facing to the left and right upper and lower clamping plates, and a small bevel gear fixed to the horizontal screw with a gear ratio of 1: 3 and A horizontal plate that moves up and down in conjunction with a vertical screw fixed to the interlocking large bevel gear, and a horizontal plate that is vertically spaced apart vertically below the middle of the left and right lower clamping plates and moves vertically, and part of it faces the horizontal plate. To form a fold consisting of peaks and troughs at the upper end of the curtain fabric by connecting the protruding plate and the folding plate that is vertically separated from each other above the middle of the left and right upper sandwiches and opposes the interval of the protruding plate and moves up and down. Fold the length of the required length. Hold the left and right ends of the length, and pinch them to the center. And at the same time start fold formation by loosening, and at the same time, make at least the left and right ends of the inner surface of the fold, and push up at a ratio of 3: 1 to each moving distance of the left and right ends of the fold fold and faster than the above movement. While forming a crest, at least between the left and right ends of the outer surface of the crest of the crest, start later than the crest formation and press down until it is weaker than the pushing force and there is no crease, forming a trough. Device for forming pleats in sewing machine sewing of curtains.