JPS6247554B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic machine for sewing pockets onto body fabrics of clothing such as jeans, shirts, blouses and the like.

The above-mentioned clothing has chest pockets, side pockets, or butt pockets for pants, etc., and these are made by folding the outer edge of the pocket cloth with an appropriate folding margin, and placing the pocket cloth in a predetermined position on the body cloth with the folding margin inside. However, it is formed by sewing two edges in the vertical direction and the bottom edge, and the basic process is to put the pocket fabric on the body fabric, which has been cut in advance and only the top edge is folded in, and then stitch the two edges together. This consists of folding the edges of the body cloth and pocket cloth and sewing them together while adjusting their mutual positions so that they match.
The dimensions and shapes of pockets vary widely from the viewpoint of functionality and fashionability, and the sewing method for jeans is usually two-row stitching, but for shirts, blouses, etc., one-row stitching is common.
This variety of pocket shapes and sewing methods makes it difficult to automate this type of work. On the other hand, when sewing pockets manually, the seam allowance from the outer edge of the pocket to the seam is extremely short, about 1 to 1.5 mm, and the outer edge of the pocket material fabric must be folded in a separate process in advance or folded in by hand during sewing. There are problems such as lower sewing efficiency due to the need for sewing, and the need for skilled workers, so automation is significant.

Conventional automatic machines for this purpose rely on mechanical cams, which have a large shape and weight, to form the seam pattern along the edge of the pocket, and change the seam pattern as the shape of the pocket being handled changes, and even sew one row. When converting from to double-row stitching, it is necessary to replace the cam each time, which takes effort, time and money, and in reality, the types of patterns handled and the frequency of replacement are limited to a small number of patterns, contrary to wishes. . From this point of view, an object of the present invention is to provide an inexpensive automatic pocket sewing machine that can easily change sewing patterns and has good sewing efficiency.

The apparatus according to the present invention has a cloth setting section, an edge folding section, a sewing section, and a product take-out section as main components, and also includes a drive device control device, a table, and a frame, and the material cloth passes through the above-mentioned four main components in order to become a product.

The sewing section is composed of a sewing machine head, a cloth moving device, and a driving section, and the cloth changes its position relative to the sewing machine head by making a predetermined movement according to the desired pocket shape and seam shape. Sewn. In this case, the moving device for moving the sewing needle of the sewing machine head and the cloth is driven by a drive section, and its operation is controlled by a control device. The control system is based on the method described in Japanese Patent Application No. 52-43803, in which all data regarding the sewing shape including reverse stitching, stitch length, and driving speed of the sewing machine head are inserted into the control device according to predetermined values. is input into the PROM storage element. Based on the data in this memory element, the sewing machine head and cloth move as desired to sew. The control device has a program cassette insertion slot.
By replacing the program cassette containing the PROM memory element, it can be adapted to any type of pocket. The data in the memory element is disclosed in Japanese Patent Application Laid-open No. 1973-
120054, 54-4649, etc., it is possible to freely input, erase, and rewrite data. Therefore, one of the greatest features of the present invention is that, regardless of the shape of the pocket, there is no need to replace any mechanical parts other than the cloth holder, and the movement of the fabric at the sewing part can be immediately controlled, including the shape of the backstitch. It's something that can be done. In conjunction with this, the present invention is also characterized in that the structure of other components is improved in isolation against pocket shape changes, and the number of replacement parts is reduced, thereby reducing replacement parts costs and replacement time. It is one. Another feature of the present invention is that the above-mentioned main components are arranged so that their operations on the respective fabrics overlap in time as much as possible, thereby increasing the number of fabrics to be sewn per unit time. Specifically, the material cloth setting section, edge folding section, sewing section, and sewn product take-out section are placed close to each other on a common horizontal table with a substantially flat upper surface, and the edge folding section is placed approximately in the center of the table. In addition, the material cloth setting section and the sewing section are placed on a table on one side of the edge folding section and on a table on the opposite side, respectively, and the front side of the table on the operating side in front of the sewing section. A four-stage configuration is adopted in which a sewn product take-out section is placed at the top.

Embodiments of the present invention in general are shown in the attached FIGS. 1, 2, and 3. Fig. 1 is an overall plan view of the device, Fig. 2 is a front view of the device as seen from the operation side (Z arrow view in Fig. 1), and Fig. 3 is a right side view of the device (Z arrow view in Fig. 1). (Y arrow direction view) in the figure. The material cloth setting section 1, edge folding section 2, and sewing section 3 are placed on a common table 6.
In addition, a sewn product removal section 4 is provided on the front side of the operation side of the table 6.
Set up. The operation of this device is controlled by a control device 5 inside the right side of the table 6. The operator performs operations using the operation box 7. Reference numeral 8 indicates legs for movement and height adjustment. 10 is the material cloth setting section 1
The details of this are shown in FIGS. 4 and 5, and A-A and B- of FIG.
The view shown by arrow B is shown by rotating the horizontal plane horizontally.

In Figures 1, 2, 3, and 4, the operator places a certain number of body cloths on the body cloth mounting rod 9, which is located in front of the common table 6 on the front side of the material cloth setting section 1 and installed on the table 6. The uppermost layer of the body cloths that have been stacked together, hung and placed and cut into appropriate dimensions in advance is picked up and transferred to the folding template conveyor 10 on the table 6. After spreading and placing it at a predetermined position on the front side, operate the switch on the panel of the operation box 7 to remove the two fork-shaped body grips 11 and the folding template 12 of the folding template conveying section 10.
When the upper side of the body cloth, which has already been spread and positioned on the table 6, is moved to the "A" position in Fig. 1 with an appropriate gap, the fork is automatically placed. The shape body gripping tool 11 and the folding template 12 are lowered, come into contact with the body cloth, and are pressed with an appropriate pressure. Thereafter, the pocket cloth, which has been previously cut to a predetermined size including the folding allowance and whose upper edge has already been folded, is picked up from a separate placement section (not shown), or the pocket material cloth that has been cut is placed thereon. After picking it up from the section, the upper edge is folded with a folding margin of a predetermined size, set on the upper side of the folding template 12, and fixed with the clamp 13 shown in FIGS. 1 and 5. In order to increase the commercial value of a sewn product, if the cloth has a pattern, the position of the pocket is adjusted by slightly moving it vertically and horizontally so that the pattern of the pocket cloth matches the pattern of the body cloth. Thereafter, as shown in Figures 1 and 3, when the knee switch 14 installed at the lower front of the table 6 is operated, the body cloth and the pocket cloth are transferred to the folding template conveyor 10 while remaining as one body without changing their relative positions. After sliding on the upper horizontal surface of the handle table 6 and moving to the point "B" directly below the edge folding part 2 shown in FIG. In addition to its shape, it can be folded in two places in the vertical direction and the bottom edge without changing its relative position to the body cloth.

In Figures 1, 2, and 3, reference numeral 15 denotes a cloth holder for pressing the pocket cloth and the body cloth after the edge folding operation from above against the upper horizontal surface of the table 6 so that they slide together. It is a tool and is arranged so that it can be moved toward or away from the upper horizontal surface of the table 6. 16 is a guide rail for moving the cloth holder 15 in the X-axis direction, and 17 and 18 are guide rails 16 for moving the cloth holder 15 in the Y-axis direction as a result of moving the cloth holder 15 in the Y-axis direction. The cloth holder 15 and the guide rail 16 are driven by a drive device using a pulse motor disposed inside the table 6 (not shown). A groove 20 is formed in the cloth holder 15 to correspond to the pocket sewing shape through which a sewing needle that swings up and down in the sewing machine head 19 of the sewing section 3 passes. When the edge folding operation of the pocket cloth is completed by the edge folding section 2, the cloth holder 15 described above is moved from the vicinity of the sewing machine head 19 to the point "B" directly below the edge folding section while being spaced apart from the upper horizontal plane of the table 6. When the movement is completed, it descends and presses the pocket fabric and body fabric from above, and transfers these fabrics to the sewing needle section of the sewing machine head 19, giving the fabrics a pre-programmed movement according to a predetermined sewing shape. At the same time, the needle of the sewing machine moves up and down to sew the pieces of fabric together. When the sewing is finished, the cloth holder 15
When the sewing machine moves back toward the front side and rises to release the pressing state of the cloth group against the stand 6, the product take-out section 4 starts operating and finally the sewn products are piled up on the cloth stacking lever 21. On the other hand, as described above, when the edge folding operation for the pocket cloth in the edge folding section 2 is completed, the folding template 12 of the folding template conveying section 10 and the fork-shaped body cloth holder located at the point "B" of the edge folding section 2 are removed. 11 rises to release the pressure on the cloth group, and as the cloth holder 15 transfers the cloth group to the sewing section 3, the upper surface of the table 6 moves toward the point "C" on the opposite operation side, and then moves to the right. Then move to point “N”.

The above is the mode of operation by the components of the apparatus for the group of supplied fabrics, and the sequence of each of these operations and the relative movement of the sewing needle and the fabric during sewing are all controlled by the control device 5 shown in FIG. 3. The timing of the sequence can be changed by changing the software for the microcomputer of the control device 5. In particular, movement programs related to sewing are provided to a memory element included in a program cassette 22 of the control device, and sewing specifications can be easily changed by replacing the cassette 22. The embodiments of the present invention have been described above, but in addition to the arrangement shown in the drawings, the effect is the same even if the arrangement is reversed symmetrically. As already mentioned, one of the features of the apparatus according to the invention is that the four main components, namely the material cloth setting section, the edge folding section, the sewing section and the product take-out section, are provided in close proximity and separately.

In order to increase the number of sewing processes per unit time and improve efficiency, it is important to increase the operating speed of each component, but there is a limit to this, so it is important to increase the operation speed of each component. It is highly effective to execute multiple processes at the same time by superimposing them on each other. On the other hand, if the whole is arranged to consist of elements that combine the material cloth setting process and the sewing and folding process, or the material cloth setting process, the edge folding process, and the sewing process, the edge folding process Alternatively, it is impossible to supply and set a new group of fabrics to be operated next until one set of fabrics completes the steps of one cycle from feeding to finishing sewing and unloading. Not only is there a problem with the operability in feeding and setting, but it is also a serious hindrance to improving sewing efficiency. On the other hand, in the present invention, prior to the edge folding part, the material cloth setting part is placed on this side and the sewing part is placed on the opposite side in close proximity to each other. Even if there is a group of fabrics and the edge folding is in progress, and there is a body fabric that is long in the vertical direction and occupies the space on the table top on the front side of the edge folding part, a new body fabric that will undergo the next process will not be processed. This allows feeding and setting, and then, at an appropriate timing, a folding template appears on the upper side of the body fabric to feed the pocket fabric, and especially in the case of double-row sewing for jeans, etc., it precedes the sewing section. This makes it possible to perform edge folding processing on a group of fabrics that will become the next product in advance while the group of fabrics is being subjected to a sewing operation.

Fig. 23 shows an example of the relationship between the elapsed time and each work process in an automatic sewing machine according to the present invention, and Fig. 24 shows an example of a diaphragm arranged in a different manner from the above test machine, for example, on the front side of the edge folding part. The fabric setting section is installed, and during the edge folding operation, the long body fabric in the vertical direction occupies the space on the front side of the stand, and only after the group of fabrics is conveyed toward the sewing section can the next new group of fabrics be set. A diagram of the relationship between the elapsed time and the work process in a case is shown. A comparison of the two shows that the arrangement according to the invention shortens the length of one working cycle and therefore improves sewing efficiency. As a result of a comparison test between the two, one work cycle in the case of the device arrangement shown in Figure 24 is 17 in the case of sewing the chest pocket of a dress shirt.
~20 seconds, whereas according to the device arrangement according to the invention 1
The working cycle can be 12-15 seconds.

Next, examples of embodiments of each component according to the present invention will be described. In FIGS. 1, 3, 4, and 5, the folding mold conveyor 10 is horizontally fixed inside the counter-operation side of the table 6, and the tip of the operating shaft is connected to the lower bracket 2 shown in FIG.
By operating an air cylinder 23 (not shown) fixed to one end surface of the base 8, the base 8 is caused to slide left and right along two guide shafts 24 fixed to the base 6. As shown in FIG. 5, the guide shaft 24 passes through the lower bracket 28 and is slidable relative to it.

25 and 26 fix the guide shaft 24 with a set screw 27.
They are each fixed to the stand 6 with a bracket for supporting them. On the other hand, in FIGS. 1, 4, and 5, one arm holder 30 (shaded area in FIG. 4) is mounted on the horizontal surface portion of both ends of the holder 29, which partially has an L-shaped cross section extending in the left-right direction when viewed from the operating side.
The arm holders 30 are screwed so that their mutual spacing can be adjusted according to the width of the body cloth to be used, and the arm holders 30
A fork-shaped body gripping tool 11 is attached to each of the fork-shaped body gripping tools 11 so as to be pivotable around a point "H" in FIG.
Attach one end of the opposite side to the point "T" of the arm holder 30.
A swinging reciprocating motion is performed by operating an air cylinder 31 fixed to. A pressing plate 32 is slidably attached to the lower surface of each tip of the body gripping tool 11 so as to move toward or away from the main body of the body gripping tool 11 in parallel, and a compression spring 33 applies a force in the direction of separation. has been done. Further, in the center of the holder 29, as shown in FIG. 5, the folding template 12 (shaded area) is fixed with a screw 34, and when the shape of the target pocket is changed, it has a different shape. is exchanged with The folding template 1
A clamp 13 is fixed to the top surface of the folding mold plate 12 by a screw 35 to hold the pocket material fabric supplied to the top surface of the folding template 12. Another air cylinder 37 is fixed to the left and right centers of the upper bracket 36 in FIGS. 4 and 5, and two guide shafts 38 are attached to the left and right sides of the air cylinder 37.
The tip of the operating shaft of the air cylinder 37, which is slidably attached to the upper bracket 36, and the tip of the guide shaft 38 are both fixed to the vertical end surface of the holder 29. 1, the body gripping tool 11 approaches or separates from the folding template 12 with respect to the operating side in FIG. Further, 42 is a stopper and a shaft end holder provided at the end of the guide shaft 38. As shown in FIGS. 4 and 5, a separate air cylinder 39 is installed on the lower surface of the center of the lower bracket 28.
is fixed vertically, and the upper end of its operating shaft is connected to a protrusion on the lower surface of the upper bracket 36. 40
are four guide rods installed vertically with their lower ends fixed to the lower bracket 28, and whose upper ends penetrate through the upper bracket 36 and are slidable, so that they can be moved by the operation of the air cylinder 39. As a result, the upper bracket 36 approaches or moves away from the lower bracket 28 in the vertical direction. 41 is the guide rod 40
This is a stopper for raising the upper bracket 36 attached to the upper bracket 36. By adopting this structure, after first spreading the body cloth on the table 6, the operator operates the operation box 7 as described above, and the operation side tips of the two fork-shaped body gripping tools 11 are connected to the air cylinder 31. The upper bracket 36, the fork-shaped body gripper 11, and the folding template 12 are raised and separated from the body cloth positioned on the stand 6. In this state, the operating shafts of the air cylinders 37 are projected, and after these are positioned above the body cloth, the operating shafts of the air cylinders 39 are moved downward to lower the upper bracket 36, and the air cylinders 37 are moved downward. 31 to lower the tip of the fork-like cloth gripping tool 11, the press plate 32 at the tip of the fork-like cloth gripping tool 11 is activated.
The lower surface of the body cloth presses the body cloth against the upper surface of the stand 6, and the lower surface of the folding template 12 approaches the upper surface of the body cloth. After that, a pocket cloth is placed on the upper surface of the folding template 12, and its position is slightly adjusted so as to match the pattern with the body cloth, and then it is fixed with the clamp 13. Then, by operating the knee switch 14 shown in FIG. is activated, and the fork-shaped body gripping tool 11 presses the body cloth from above against the top surface of the table 6 and moves it to point "B" in FIG. Then, when the folding is completed, the tip of the fork-shaped body cloth gripper is raised by operating the air cylinder 31, and then the air cylinder 37 is operated to move the folding template 12 to the opposite operation side. The air cylinder 39 is actuated to raise the fork-shaped body cloth gripper 11 and the folding template 12, and then the air cylinder 23 is actuated to return to point "D" in FIG. 1 and then stopped. As mentioned above, after the cloth group moves from point "A" to point "B" shown in FIG. Repeat the same cycle. The sequence of movements of each of the machine elements described above is controlled by the control device 5, and the operator simply moves the fork-like body cloth holder 11 and the folding mold 1 after positioning the body cloth supply.
2 to the operating side, and after clamping the pocket cloth,
It is only necessary to operate the knee switch 14 for moving the cloth group from point "A" to point "B" in the figure.

Fig. 12 is a front side view of the folded edge portion 2 described in Figs. 1, 2, and 3; Fig. 13 is a right side view of the same portion; ), FIG. 14 is a sectional view taken along the line C-C in FIG. 13, FIG. 15 is a sectional view taken along line DD in FIG.
The figure is a sectional view taken along line E-E in Fig. 12, and Fig. 18 is a cross-sectional view of Fig. 12.
Figure 19 is a modification of the FF cross section in Figure 12, Figure 20 is a further variation of the FF cross section in Figure 12, and Figure 21 is a G--G in Figure 12. The deformation of the G section is shown respectively. The edge folding section is roughly divided into a frame 43 and a folding operation section 44,
The folding operation section is fixed to the above-mentioned table 6 by the frame 43, and reciprocates up and down so as to approach or move away from the upper plane of the table 6, and when it is separated, it is transferred from the above-mentioned material cloth setting section. Body cloth that comes,
The folding template and the pocket fabric, which has been folded only at the top edge and cut to a size that includes the vertical direction and the folding allowance for the bottom edge, are positioned at the bottom of the folding template and then lowered to make contact and follow the outer shape of the folding template. Then, fold in the vertical part and the bottom part, and repeat the operation of rising when the folding is completed. 4 in Figures 12, 13, 16 and 17.
Reference numeral 3 denotes a frame whose other end (not shown) is fixed to the table 6 and has an arm portion extending parallel to and spaced apart from the upper plane of the table 6, at the tip of which a folding operation section is installed. The operating shaft of the air cylinder 45 installed vertically on the upper surface of the frame 43 extends downward from the support plate (1) 4.
It is screwed into a screw hole provided in a boss on the upper surface of 8 and is fixed by a nut 49 to move up and down. The two guide shafts 46 slidably pass through the guide member 47 attached to the frame 43, and their lower ends are fixed to the support plate (1) 48, respectively, so that the reciprocation of the operating shaft of the air cylinder 45 causes Support plate (1) 4
8 and the lower component connected thereto are guided by the guide member 48 and the guide shaft 46 to move up and down. 12th, 13th, 15th, 17th, and 18th
As shown in the figure, four columns 50 extending below the support plate (1) 18 are fixed at their upper ends, and the lower ends of the columns 50 are fixed to the support plate (2) 51.
The support plate as shown in Figures 13, 14, 15 and 18
A support plate (2) 52 is provided on the lower surface of (2) 51. The support plate (3) 52 has a left-right symmetrical shape divided into two from the center as shown in FIG.
It has a shape similar to the shaded area in the figure. As shown in Fig. 19, the support plate (2) 51 has four long holes 53, and the support plate (2) 51 has four long holes 53.
A screw 54 screwed into the female thread of (3) 52 passes through the support plate (3) 52, and by loosening this screw, the position of the support plate (3) 52 can be adjusted and fixed as shown by diagonal lines. As shown in FIGS. 12, 14, 15, 18 and 19, support plates (4) 55 are fixed to the lower surfaces of each of the right and left support plates (3) 52 by three screws 56, respectively. As shown in Figures 18 and 19, support plate (3) 5
Since the hole through which the screw 56 of No. 2 passes is an elongated hole, the relative position of the support plate (4) 55 with respect to the support plate (3) 52 is as shown in Figs.
It is possible to have a fan-shaped arrangement as shown in the figure, and the mounting angle can be arbitrarily adjusted within the size range of the elongated hole.

As shown in Figures 12, 13, 15, 18, 19 and 20, there is a support plate (5) on the upper surface of the operation side of the support plate (2) 51.
57 is fixed with a screw 58, and the hole through which the screw 58 of the support plate (5) 57 passes is an elongated hole.
The relative position of the support plate (5) 57 with respect to the support plate 1 can be adjusted back and forth from the position shown in FIG. 18 to the position shown in FIG. 19.

Support plate (4) 55 as shown in Figures 13, 20 and 21
There are 4 swing levers 5, 2 each on the left and right, on the bottom of the
9 makes a reciprocating rotational movement by a certain angle around the rotational center point ``chi'' fixed on the support plate (4) 55, and the point ``ri'' on the swing lever 59 is the point ``nu'' or the point ``. ``ru'' moves to the point ``wo'' and returns to the point ``wo''. As shown in FIGS. 13 and 20, the two points "ru" on one side are connected to each other by a connecting bar 60, and the connecting bar 60 and the point "ru" of the swing lever 59 are rotatable with respect to each other. Since the two swing levers 59 are connected by a directional axis, they move at the same phase angle. On the other hand, the 13th
Left and right 2 like 14, 15, 18, 19 and 20
An air cylinder 61 is horizontally installed on each of the supporting plates (4) 55 so that its end can rotate around a shaft "wa", and a block 62 is attached to the tip of the operating shaft. It extends downward and is rotatably connected to a point on the near side of the connecting bar 60. On the other hand, in FIG. 21, the lower ends of the shafts that can be rotated vertically to the point "I" of the swing lever 59 and are fixed in the vertical direction are attached to the 13th, 14th, and 2nd shafts.
It is fixed to two square rods (1) 63, one on each side of Figure 1. Folding blades (1) 64 are screwed from below to the lower surfaces of the left and right square bars (1) 63, respectively. Therefore, the air cylinder 61 is
The folding blade (1) 64 also swings due to the reciprocating motion of the operating shaft of the folding blade (1) 64, and when the control shaft of the air cylinder 61 is retracted, the folding blade (1) 64 moves to the position indicated by the chain line in FIG. In Figures 12, 13, 15, 18, 19, and 20, guide shafts 65 are fixed to the two bosses of the support plate (5) 57, respectively, and inserted into the two holes of the square bar (2) 66. Thus, the square rod (2) 66 can slide back and forth on the guide shaft 65. air cylinder 67
is fixed horizontally above the support plate (5) 57, and a connecting plate 68 is fixed vertically to the tip of its operating shaft, and its lower end is fixed to the front surface of the square bar (2) 66. . The lower horizontal plane of the square rod (2) 66 has a second
As shown in Figure 1, six screw holes are machined.
Symmetrical folding blades for three helical holes on each side
(2) One each of 69 and 70 is attached. Regarding this installation method, folding blade (2) 69 and 70
Regarding the installation method for the square rod (2) 66, the folding blade 69
The through holes for each of the three screws 69 and 70 are made into elongated holes as shown by the broken lines in FIG. In FIG. 21, the working edges "H" and "J" for folding the pocket cloth of folding blades (2) 69 and 70 are pivotable about points "F" and "Y", respectively. The mounting angle is variable and therefore the angle "θ" is adjustable. These folding blades (2) 69 and 70, which are adjusted to the desired angle "θ" by turning and tightening screws, are moved through the connecting plate 68 and the square rod (2) 66 by the reciprocating operation of the air cylinder 67, and the guide Guided by shaft 65, the positions of their respective working edges "H" and "J" are similar to that of air cylinder 67 in FIG.
The actuating shaft swings back and forth between a state in which it is protruded and a state in which the shaft is retracted, as shown by the chain line.

In Figs. 14, 15 and 21, 71 presses the body cloth, pocket folding template and pocket cloth transferred from the above-mentioned material cloth setting section by applying appropriate pressure from above and folds the edge of the pocket cloth. This is a holding plate for fixing these so that they do not shift relative to each other. The pocket cloth folding mold and the body cloth are transferred from the material cloth setting section to just below the main edge folding section, and then the edge folding operation section 44 is lowered, resulting in the state shown in FIGS. 14B and 15A. In the figure, 72 is pocket cloth, 12 is a folding template,
73 indicates the body cloth. Next, air cylinder 6
1 and 67, folding blade (1) 64 and folding blade (2) 69 and 70 are activated as shown in FIGS. 14A and 15.
The pocket cloth 72 is moved to the position shown in FIG. B, and the edge of the pocket cloth 72 is folded along the outer shape of the folding template 12. 12th, 14A, 13, 15A, 17, 18, 19
As shown in Fig. 20, the lower ends of four vertical columns 74 are fixed to a presser plate 72 which is made slightly larger than the outer shape of the target pocket, and the columns are connected to the support plate (2) 51 and the support plate (2). 3) It passes through 52 in a loose state, and its upper ends are connected by two girders 75, and the approximately central part of each girder 75 is connected to the support plate (1) 48.
Two air cylinders 7 fixed on top
It is connected to the operating shaft of 6. With this structure, the presser plate 72 prevents relative displacement of the fabric when folding the edges, and also weakens the pressing force when folding the edges, making it easier to operate the folding blades (1) and (2). (1) and (2) move back and when the edge folding is completed, the air cylinder 76 is operated, and the operating shaft is pressed downward and the press plate 72 presses the fabric and folding template from above to apply a load to the fold. It is possible to stabilize it. This effect is particularly great when the presser plate 72 is used as a heat generating element.

With the structure described above, the operation of the edge folding part of this pocket cloth is as follows: support plate (1) 48 support plate (2) 51, support plate (3) 52, support plate (4) 52, presser plate 71, folding blade ( 1)
64, while the folding blades (2) 69 and 70 are raised by the air cylinder 45, the pocket cloth 72, the folding template 12, and the body cloth 73, which have been supplied and set in advance by the material cloth setting section, are , after being positioned on the horizontal surface of the lower table 6, the air cylinder 45 is activated to lower each component of the edge folding portion into contact with the fabric group, and then the two air cylinders 61 are activated to fold the folding blade (1). advance toward the center of the pocket from the left and right sides, fold the left and right edges of the pocket in the direction in which the folding margin touches the body fabric, then move the folding blade (1) back to return to its original position, and then operate the air cylinder 67. The folding blades (2) 69 and 70 are advanced toward the center of the pocket, and the bottom edge of the pocket is folded in the direction in which the folding margin contacts the body fabric. After returning to the position, the air cylinder 76 is activated and the pocket cloth with the edge folding completed is pressed by the pressing plate 71, after which each component of the edge folding section is raised by the air cylinder 45 and returned to its original position. Repeat the same operation below.
All of the above movement sequences are controlled by the previously described control device 5 according to a predetermined program. Regarding the configuration of the edge folding section described above, an example is shown in which an air cylinder is used as the drive source for operating each element, but other drive sources such as an electromagnetic solenoid may also be used. After the control sequence and the edge folding are completed, the rear presser plate 7 removes the folding template 12 backward.
The order of operation may be changed so that the cloth group is pressed in step 1.

In addition, although we have described the typical pocket shapes in which the vertical edges are parallel or tapered straight lines and the bottom edges are V-shaped, other pocket shapes can also be used by changing the arrangement of the folding molds and using a presser plate. By replacing 71, it is possible to accommodate a wide range of pocket shapes. As mentioned above, the feature of the folded edge portion of the present invention is that it has a wide adjustment range for changing the width of the pocket, the angle of inclination of the vertical edge, the depth of the pocket, and the angle of the bottom of the pocket, and it reduces the frequency of parts replacement. Very few things. Also, if the shape of the bottom of the pocket is different, you only need to replace the folding blade.The main replacement part when changing the shape of the pocket is the presser plate 71.
only.

6 to 11 show embodiments of the cloth holding section of the sewing section according to the present invention. Fig. 6 is an overhead plan view of the cloth holding part, Fig. 7 is a cross-sectional view taken along line L-L in Fig. 6, Fig. 8 is a cross-sectional view taken along line M-M in Fig. 6, and Fig. 9 is an arrow V arrow in Fig. 8. The perspective views, FIGS. 10 and 11, are enlarged views of portions N and P of FIG. 8, respectively. The cloth holder 15 is movable in the X direction along a guide rail 16, and the guide rail 16 is movable in the Y direction along another guide rail (not shown). Driving of the cloth holder 15 in the X and Y directions is performed by a pulse motor (not shown) controlled by the control device 5. A bracket (2) 75 is fixed by a screw 76 to a bracket (1) 74 that moves along the guide rail 16 in the X direction. On the other hand, a bracket (3) 77 is installed below the bracket (2) 75, to which the lower ends of the two guide shafts 78 are fixed, and the upper ends are slidably inserted into the holes of the bracket (2) 75. . An air cylinder 80 is arranged horizontally by a bracket (3) 79 fixed to the upper surface of the bracket (2) 75, and a link 81 arranged at the tip of its operating shaft is mounted on the bracket (2) 75 by a bracket (4) 82. The bracket (3) 73 connected to the bracket (5) 83 is guided by the guide shaft 78 and oscillates up and down. Make it move. Bracket(3)77
As shown in FIG. 9, a protrusion 84 is installed on the lower surface of the cloth holder 15, and the attachment position is regulated by the inner surface of the protrusion 84, and the cloth holder 15 is horizontally attached with a screw 85. With this structure, the cloth holder 15 is lowered by the operation of the air cylinder 80, and the pocket cloth 72 and the body cloth 73, which have already been folded in three places at the edge folding part, are placed on the stand 6 from above.
The cloth group is moved on the upper horizontal surface of the table 6 by pressing it against the upper horizontal surface of the table 6 and moving it in the X and Y directions according to a desired program. In order to ensure the movement of the cloth or to prevent the cloth from shifting, a thin elastic body or a sheet with a large coefficient of friction may be attached to the lower surface of the cloth holder 15 that is in contact with the cloth group.

On the other hand, when the cloth holder 15 is raised by the operation of the air cylinder 80 and is separated from the upper horizontal plane of the table 6, it does not touch or move the cloth at all.

Cloth holding section 1 for sewing together the held cloth group
5 is machined with a narrow groove 20 for the passage of a sewing needle that moves up and down in the sewing machine head. Groove 2
The reason why the two tips at 0 are wide is because backstitching is performed at these parts. As shown in Figures 6, 8, 10 and 11, a leaf spring 86 is fixed to the cloth holder 15 with screws 87 on an extension of the sewing needle path groove corresponding to the sewing of the two vertical edges of the pocket. do. The shape of each spring 86 in its unloaded, free state is shown by chain lines in FIGS. 10 and 11, and its tips protrude downward from the end surface or square hole of the cloth holder 15, respectively. Now, when the cloth holder 15 descends and presses the cloth group against the upper horizontal surface of the table 6, the leaf spring 8
The tip of 6 first contacts body cloth 73 and finally deforms into the shape shown by the solid line in FIGS. 10 and 11. At this time, the tip of the leaf spring is displaced by δ in the horizontal direction, and as a result, a tension corresponding to the displacement of the leaf spring 86 of 2δ is generated in the direction of the vertical pocket edge of the body cloth 73.

By generating tension in the direction of the vertical edge of the pocket of the body fabric, it is possible to prevent the phenomenon of puckering, which occurs when folds occur in the direction of the vertical edge of the pocket due to sewing, thereby reducing the number of defective products. It becomes possible. This method makes it possible to apply tension to body fabric in an extremely simple manner. The fabric holder having such a structure rises and moves to a position directly below the edge folding part while being spaced apart from the upper horizontal plane of the table 6, and presses the folded fabric from above,
After the folding template of the edge folding section is pulled out backward, it returns to the sewing machine head section, and the fabric is transferred according to a preprogrammed movement to complete the sewing. When sewing is finished, the cloth holder 15 moves slightly toward the operation side, lifts away from the sewing needle portion of the sewing machine head, and releases pressure on the cloth. When sewing a pocket of a different shape, only the cloth holder having a corresponding groove for a different sewing needle path is replaced by loosening the screw 85.

As described above, when the sewing section finishes sewing and the cloth holder rises, the sewn product take-out section 4 shown in FIG. 2 operates to take out the product and stack it on the cloth stacking lever 21.

FIG. 22 shows a right side view. Reference numeral 88 denotes a rubber roll, which is normally located at the position shown by the solid line, and can be rotated around a point "ta" fixed to the frame of the table 6, and is rotated by the actuation of an air cylinder 89 whose one end is fixed to the frame of the table 6, as shown by the chain line. As shown, the upper surface of the base 6 is arranged so that it can be pressed against the side surface of the table. At this time, the rubber roll 88 is rotated clockwise in FIG. 22 by a drive device (not shown). The cloth loading lever 21 is normally in the position shown by the solid line, but the end of the operating shaft, whose end is fixed to the stand 6, is moved by an air cylinder 90 fixed to the lower part of the cloth loading lever, as shown by the chain line with the dot "C" in the center. It is possible to rotate to any position. A horizontal shaft 91 is separately fixed to the table 6 above the cloth loading lever 21. When the sewing is finished and the cloth holder 15 is raised, the lower end of the cloth hangs down from the end surface of the table 6 as shown by the wavy line. Then rubber roll 8
When 8 starts rotating while pressing the cloth against the table end surface of the swivel table 6 to the position indicated by the chain line, the cloth is pulled out downward and moves vertically so as to pass in front of the horizontal shaft 91. Next, when the fabric stacking lever 21 is turned to the position shown by the chain line, the fabric is turned over and stacked on the horizontal portion of the fabric stacking lever 21 without slipping off the fabric stacking lever. The feature of this structure is that the number of movable parts is extremely small, the structure is simple, no auxiliary means such as compressed air is used, and the operation is reliable. In this case, the effect is the same even if a plate 92 is provided in the vertical direction on the end face of the table 6 as shown by the chain line instead of the horizontal shaft 91. cloth holder 15
The timing of turning and starting rotation of the rubber roll, turning of the cloth loading lever 21, and returning to the original state following the rise of the rubber roll is controlled and finely adjusted by a control device and a timer attached to the table operating side. In addition, other means such as a limit switch or a phototube may be used to detect and control the rise of the cloth holder and the drooping of the edge of the cloth.

The sewing machine head of this automatic machine is equipped with an automatic lockstitch thread cutter, but in order to prevent the production of defective products in the event that the needle thread being used breaks due to some kind of obstruction, the sewing machine head is designed to detect this and operate the sewing machine head. Equipped with an automatic upper thread breakage detection device to automatically stop the machine.

From what has been stated above, the advantages of the automatic machine of the present invention are (1) The movement of the fabric during sewing and the movement of the needle of the sewing machine head can be changed by changing the program cassette using an electronic control system, so that the pocket shape can be changed. It is extremely easy to change the sewing route.

(2) (1) Even with the same sewing path attached to the top, the sewing pitch can be changed, and the pitch and shape of reverse stitching at the sewing start and sewing end can be freely selected, and a special sewing machine head is not required.

(3) Since the number of mechanical parts that need to be replaced when changing the pocket shape is small and their weight is light, the replacement parts cost and replacement time are short.

(4) Sewing efficiency is high due to the high overlap rate of each operation.

(5) There is no puckering phenomenon in sewn products and the defective rate is low.

(6) Since it uses a microcomputer type control device, it is easy to change the order, timing, speed, etc. of each operation.

(7) The mechanism is simple.

etc. can be mentioned.

[Brief explanation of the drawing]

The drawings all show embodiments of the present invention; Fig. 1 is an overall plan view, Fig. 2 is a front view seen from the operating side, Fig. 3 is a right side view, and Fig. 4 is an A of Fig. 1. -A sectional view, Fig. 5 is a BB-B sectional view in Fig. 1, Fig. 6 is a plan view of the cloth holder, Fig. 7 is a LL-L sectional view in Fig. 6, Fig. 8 is a sectional view taken along the line M-M in Fig. 6, Fig. 9 is a view taken in the direction of the V arrow in Fig. 8, Fig. 10 is an enlarged view of N part in Fig. 8, and Fig. 11 is an enlarged view of P part in Fig. 8. , FIG. 12 is a front side view of the edge folded part, FIG. 13 is a right side view of the edge folded part, and FIG.
The cross-sectional view taken along the line C shows the state in which the folding blade (1) 64 has folded the pocket edge, and the cross-sectional view shown in FIG. 1
Figure 5A is a sectional view taken along the line D-D in Figure 12, showing the folding blade (2) 6.
9, 70 is the state before the pocket edge is folded in, No. 15
Figure B is a sectional view taken along the line D-D in Figure 12, showing the folding blade (2) 6.
9 and 70 are the state in which the pocket edge is folded, FIG.
18 is a sectional view taken along line E, FIG. 18 is a sectional view taken along line FF in FIG. 12, and FIGS. 19 and 20 are taken along FF in FIG. 12.
FIG. 21 is a modification of the cross section taken along the line G-G in FIG. 12, FIG. 22 is a right side view of the sewn product take-out section, and FIG. 23 is an example of a diagram of the sewing mode according to the present invention. FIG. 24 is a diagram of a sewing mode not according to the present invention. 1... Material cloth setting part, 2... Edge folding part,
3...Sewing section, 4...Product take-out section, 5...Control device, 6...Common stand, 7...Operation box, 10...Folding template transport unit, 12...Folding template, 15... Cloth holder, 16... Guide rail, 17, 18... Guide device, 19... Sewing machine head, 64... Folding blade (1), 69, 70... Folding blade (2), 72... Pocket cloth, 73 ...Body cloth.

Claims (1)

[Scope of Claims] 1 Consists of independent main sections: material cloth setting section, edge folding section, sewing section, and sewn product take-out section, and the material cloth setting section, edge folding section, and sewing section have a common section with a flat upper surface. They are installed close to each other on the table, and the edge folded part is placed almost in the center of the table, and the material cloth set part and the sewing material are placed on the table on one side of the edge folded part and on the opposite side of the table. A sewn product retrieval section is installed on the front side of the table on the scanning side in front of the sewing section, and the supplied cloth is automatically conveyed from the material cloth setting section to the edge folding section and pocket material cloth. After the edge of the garment is automatically folded into the body fabric side into a predetermined size and shape, it is automatically transported to the sewing section, sewn according to a predetermined program, and finally automatically taken out by the sewn product take-out section. In addition, after the fabric group is automatically conveyed and folded into the edge folding section, the fabric group positioning and conveying device retreats to the material fabric setting section to enable setting of a new material fabric group, and the fabric group is folded. An automatic pocket sewing machine characterized by automatically transporting a group of fabrics to a sewing section. 2. In claim 1, the material cloth setting section is composed of a cloth group placement surface on a table and a cloth group positioning and conveying device, and the cloth group positioning and conveying device finishes the outer shape into a desired pocket outer shape. It consists of a pocket folding template, two fork-shaped grips, and an element for moving them.The pocket folding template and fork-shaped grips move forward and backward,
It is movable left and right as well as up and down, and the pocket folding template can be easily replaced by loosening its mounting screws as necessary, and the two fork-like grips can be moved to suit the shape of the pocket template by loosening its mounting screws. An automatic pocket sewing machine characterized in that the automatic pocket sewing machine is constructed so that mutual spacing can be easily adjusted by changing the mounting position of the parts. 3 In claim 1, the edge folding part is composed of a frame and a folding part, and is installed on a common table top surface by the frame, and the folding parts move toward or away from the common table top surface. The material is placed above the folding template of the material fabric setting section and the folding template of the body fabric set below the folding template of the material cloth setting section in a separated state, and is cut to a size larger than the folding template by the folding allowance. The pocket material cloth having an outer shape is moved directly below the pocket material cloth, and then lowered, and then reciprocated from the left and right directions, so that the left and right edges of the pocket material cloth are connected to the folding template and the body cloth. It includes a folding blade 1 for folding between the pocket material cloth and a folding blade 2 for folding the bottom edge of the pocket material cloth between the folding template and the body cloth, and folds the left and right sides according to the desired pocket shape. The mutual spacing and inclination angle of the blades 1 can be set according to the size of the pocket material by loosening the mounting screws and slidingly adjusting their mounting positions, and the folding blades 1 can be set according to the size of the pocket material cloth. to exchange,
In addition, the mounting position or inclination angle of the pocket bottom edge folding blade 2 is set by loosening the mounting screw and slidingly adjusting the mounting position of the folding blade 2 to match the bottom edge of the pocket material cloth, and the size of the pocket material cloth. An automatic pocket sewing machine characterized in that a folding blade 2 can be easily replaced according to the situation. 4. Claim 3 provides that a pressing plate is provided for pressing the pocket cloth, folding template, and body cloth from above to prevent them from shifting relative to each other during the folding process. During the folding process of the edge of the pocket material cloth, the vertical movement cylinder of the edge folding part presses with the pressing force that allows the folding blade to reciprocate, making the reciprocating movement of the folding blade easy, and after the folding process is completed, the folding template is After being removed, the structure is such that the pressing force can be increased by the operation of another pressure source, and the external shape of the holding plate has a certain dimension added to the external shape of the target pocket, so that the mounting screw can be tightened. An automatic pocket sewing machine characterized by being equipped with an edge folding part that can be replaced by loosening it. 5. In claim 1, the sewing section transports the sewing machine main body comprising a sewing machine head, a sewing machine head drive motor, and a sewing machine head control section, and a group of fabrics to be sewn from an edge folding section, and then rotates the sewing machine according to the desired sewing shape. X/Y relative to the main body
It consists of a cloth holder for moving within a plane and a drive mechanism including a pulse motor for driving the cloth holder.The movement of the cloth according to the desired sewing shape and the operation of the sewing machine body are controlled during sewing. A microcomputer-type control device including a cassette incorporating elements in which cloth movement programs are stored in advance is used to control the movement of the sewing machine head and the relative movement between the sewing machine head and cloth holder in relation to changes in sewing speed and shape. An automatic pocket sewing machine characterized in that only the cassette of the control device is replaced. 6. In claim 5, the microcomputer control device not only controls sewing, but also controls other sections such as the material cloth setting section, the edge folding section, and the sewn product take-out section, as well as the sequence of operations between the sections. An automatic pocket sewing machine characterized by: 7. The automatic pocket sewing machine according to claim 5, wherein the sewing machine head has an upper thread breakage detection device. 8 In claim 5, the cloth holder has a groove for a sewing needle passing path of the sewing machine head according to the sewing shape, and is movable up and down so as to come into contact with or away from the horizontal surface of the table top, and when it comes into contact with it, The cloth group is pressed from above, and has a plurality of leaf springs of the same shape, the lower ends of which protrude from the lower surface of the cloth holder when they are separated, and which bend and apply tension to the body cloth when they come into contact with each other. An automatic pocket sewing machine characterized in that the cloth holder itself can be easily replaced in accordance with a desired change in the shape of the pocket by loosening the mounting screw. 9 In claim 1, the sewn product take-out part is press-fitted to or separated from the front side of the table installed on the top surface of the common table, and is positioned below the rubber roll that rotates when it is press-fitted. and a cloth loading lever having an arm part parallel to the table end surface line that rotates around a vertical line in contact with the table end surface, and a horizontal axis parallel to the upper part of the arm of the cloth loading lever or a lower end parallel to the arm part. The thin plate is fixed to a table, and the fabric is first further lowered between the end of the table and the rotating rubber roll, and suspended between the horizontal shaft or the thin plate and the arm, and then the horizontal arm of the fabric loading lever is An automatic pocket sewing machine characterized in that the sewing machine rotates beyond the horizontal shaft or the lower side of the thin plate to turn the cloth inside out and stack it on the horizontal arm of the cloth loading lever.