JPH07124354A - X-y automatic sewing apparatus - Google Patents

Abstract

PURPOSE:To make it easy to deal with a change of a position of positioning pins, by a method in which a pin stand having positioning pins is provided separately from a lift for the pin stand and the pin stand is lifted as a whole by means of the lift for the pin stand. CONSTITUTION:A work table comprises an upper pressure plate 15 and a lower pressure plate 16 for sandwiching a work, a pin stand 11 provided with positioning pins 111 to 113, a lift 13 for lifting the pin stand 11 and a shifter making a linear reciprocating movement. A lifting cylinder 35 is provided between a lower side of the lift 13 and a base 17. The lift 13 is lifted together with the pin stand 11 due to the expansion and contraction of the lifting cyclinder 35. The lift 13 is provided with a clamp 33 to hold the pin stand 11, so that the pin stand 11 is fixed to the lift 13. Therefore, a position of positioning pins can be changed only by exchanging the pin stand 11.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an XY automatic sewing machine in which a jig for positioning a work can be easily set.

[0002]

2. Description of the Related Art X-for sewing while changing the mutual positions of a work (cloth, leather, etc.) and a sewing machine arm in both vertical and horizontal directions.
There is a Y automatic sewing machine. For example, as shown in FIGS. 8 and 9, the work 81 is set on the table 98, and the work 81 is clamped by the upper and lower holding plates 921 and 922 from both upper and lower surfaces, and the work 81 is inserted into the openings 923 of the holding plates 921 and 922. The sewn portion of the exposed work 81 is moved to just below the thread take-out portion 911 of the sewing machine arm 91 for sewing.

Positioning pins 931 to 933 for determining the coordinate position of the work 81 are arranged, and when setting the work 81, the positioning holes of the work 81 are aligned with the positioning pins 931 to 933. The setting of the work 81 on the XY automatic sewing machine 9 is performed in the following procedure.

First, the lifting plate elevating cylinder 94 is operated to raise the upper pressing plate 921. That is, as shown in FIG. 9, the rod 941 of the elevating cylinder 94 is retracted, the first arm 943 is rotated around the pivot 942, and the upper pressing plate 921 fixed to the tip of the first arm 943 is raised.

Next, the opening / closing cylinder 95 is operated to retract the rod 951. Then, the second arm 953 and the upper pressing plate 921 rotate in the direction of the arrow about the rotating shaft 952, and the upper pressing plate 921 is opened as shown by the chain line in the figure. Subsequently, the pin cylinders 961 to 963 are operated to cause the positioning pins 931 to 933 to project. The positioning pins 931 to 933 are pin cylinders 961 to 9
It is fixed to each of the 63 rods.

Next, in this state, the positioning pins 931 to 931
Insert the 933 into the positioning hole of the work 81,
Align the position of. Then, the opening / closing cylinder 95 is restored and the upper pressing plate 921 is closed.
4, the upper pressing plate 921 is lowered, and the work 81 is clamped by the upper and lower pressing plates 921 and 922.

Finally, the pin cylinders 961 to 963 are restored and the positioning pins 931 to 933 are moved to the table 9.
Lower 1 When the sewn portion of the workpiece 81 is different and the positioning pins 931 to 933 are arranged differently, the positioning pins 931 to 933 and the pin cylinder 9 are different.
It is necessary to replace the positioning plate 93 to which 61 to 963 are attached. At the same time, the corresponding holding plate 92
Replace with 1-922.

[0008]

However, the above XY automatic sewing machine device has the following problems. In order to support various kinds of sewing products, positioning pins 931-9
However, it is necessary to replace the entire positioning plate 93 to which the positioning pins 931 to 933 and the pin cylinders 961 to 963 are attached, which requires a lot of man-hours for setup. Is.

That is, the positioning plate 93 is mounted by a mounting screw (reference numeral 934) in FIG. 9, and it takes time to remove and mount the positioning plate 93. Further, the replacement positioning plate is equipped with the positioning pins 931 to 933 and the pin cylinders 961 to 963 and is expensive.

Further, the pin cylinders 961 to 963 and the positioning pins 931 to 933 are connected to another positioning plate 93.
However, it is necessary to rearrange them according to the arrangement of the new positioning plate, which requires more man-hours. The present invention is based on the conventional X-
In view of the problems of the Y automatic sewing machine, it is an object of the present invention to provide an XY automatic sewing machine that can quickly and inexpensively replace a positioning pin and a pin base for setting a reference position of a work. .

[0011]

According to the present invention, there is provided an X-machine having a work table which fixes a work and linearly moves in the X direction, and a sewing machine arm which linearly moves in the Y direction perpendicular to the X direction.
In the Y automatic sewing machine, the work table has upper and lower holding plates for holding the work, a pin table on which a positioning pin for setting a reference position of the work is erected, and the pin table is moved up and down. The lift base includes a lift base and a shift base that linearly reciprocates in the X direction. The shift base includes first and second clamp devices for holding the upper and lower holding plates. It has a third clamp device for gripping the pin base, while the pressing plate is provided with pin holes for inserting the positioning pins of the pin base. It is on the sewing machine.

What is most noticeable in the present invention is that it has a pin base on which positioning pins are erected, an elevating base for raising and lowering the pin base, and a shift base for performing linear reciprocating motion in the X direction. The table has first and second clamp devices for holding the upper and lower holding plates, and the lifting table has a third clamp device for holding the pin table. The holding plate is provided with pin holes for inserting the positioning pins of the pin base. Here, the clamp device is a gripping device capable of gripping a target member by a driving device such as a cylinder or a solenoid.

Between the pair of the shift base and the pressing plate, and between the pair of the lift base and the pin base, there is a locate pin for alignment or a fitting hole provided at a position corresponding to the locate pin. , It is preferable to provide it corresponding to each partner. This is because by fitting the locate pin into the fitting hole, the shift base and the pressing plate, or the lift base and the pin base can be easily aligned. It is sufficient to provide either the locate pin or the fitting hole in one of the paired members, but both the locate pin and the fitting hole may be provided.

Further, a plurality of optical sensors are arranged at predetermined coordinate positions, and the same set of blocking portions or openings is formed corresponding to the coordinate positions on each of the pin base and the holding plate paired therewith. However, it is preferable that the predetermined sewing program is started based on the detection signals of the optical sensor for the closed portion and the opening portion.

According to the above construction, the pin base and the holding plate that form a pair have the closing portion or the opening portion at the same position, so that the pin base and the holding plate having an incorrect combination are used. Will disappear. Further, by making the arrangement mode of the opening (closed part) correspond to the sewing program, the arrangement mode of the opening (closed part) can be detected by the optical sensor, and the correct sewing program can be automatically started.
This is because it can contribute to automation of the sewing process and labor saving.

[0016]

In the XY automatic sewing machine device of the present invention, unlike the conventional device, the positioning pins are not provided with the cylinders in a one-to-one correspondence, but a pin base having the positioning pins attached and a pin. It is configured as a separate member from the lifting platform that raises and lowers the platform. Then, the entire pin base is lifted and lowered by the lift base.

Therefore, in order to change the arrangement of the positioning pins, it is sufficient to replace the pin base on which the positioning pins are erected, and it is not necessary to replace the lift base and its lifting drive member (cylinder etc.). It is easy to deal with the change of the layout. In addition, the pin base to be replaced is extremely inexpensive because only the positioning pins are attached.

Further, the replacement of the pin base due to the change of the arrangement of the positioning pins, or the replacement of the holding plate, which is necessary in some cases, is performed by driving the first to third clamp devices. That is, by holding the replacement holding plate by the first and second clamp devices and holding the replacement pin base by the third clamp device, the holding plate and the pin base are replaced.

Therefore, the replacement is extremely quick and easy as compared with the conventional replacement of the pressing plate and the pin base by screwing or the like. As described above, according to the present invention, it is possible to provide the XY automatic sewing machine device which can quickly and inexpensively replace the positioning pin and the pin base for setting the reference position of the work.

[0020]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An XY automatic sewing machine according to an embodiment of the present invention will be described with reference to FIGS. In this example, as shown in FIGS. 1 and 2, the work 81 (FIG. 2) is fixed and X
This is an XY automatic sewing machine device 1 having a work table 10 for performing a linear movement in a direction and a sewing machine arm 18 for performing a linear movement in a Y direction perpendicular to the X direction.

As shown in FIG. 2, the work table 10 includes upper and lower holding plates 15 and 16 for holding the work 81, and positioning pins 111 to 111 for setting a reference position of the work.
It has a pin base 11 on which 113 is erected, a lift base 13 for moving the pin base 11 up and down, and, as shown in FIG. 1, a shift base 21 for performing a linear reciprocating motion in the X direction.

As shown in FIG. 1, the shift base 21 has first and second clamp devices 31 and 32 for holding the upper and lower holding plates 15 and 16, respectively. As shown in FIG. 1
3 has a third clamp device 33 that holds the pin base 11. In addition, the holding plates 15 and 16 are provided with pin holes for inserting the positioning pins 111 to 113.

As shown in FIG. 4, the mounting plate 381 of the swing frame 25 which constitutes the shift base 21 and holds the upper pressing plate 15 has a locate pin 221 for alignment with the upper pressing plate 15. The upper pressing plate 15 is provided with a fitting hole 151 corresponding thereto.

Further, as shown in FIG. 1, the shift base 21 is provided with locate pins 223 and 224 for alignment with the lower presser plate 16, and the lower presser plate 16 is fitted with the corresponding pins. There are holes. Further, as shown in FIG. 2, the lift base 13 is provided with a locate pin 225 for alignment with the pin base 11.
Is provided with a fitting hole corresponding to the locate pin 225.

On the lower side of the pin base 11, optical sensors 421 to 428 (not shown) are attached at positions corresponding to the predetermined coordinate positions 82 shown in FIG. As shown in FIG. 1, the pin base 11 and the pressing plates 15 and 16 are formed with closing portions 431 and 432 or openings 441 to 446 corresponding to the coordinate positions 82.

Then, as shown in FIG.
21 to 428 detect whether the closed portions 431 and 432 or the opening portions 441 to 446, and the controller 41
The output signal (0, 1) to the controller 41
This starts a predetermined sewing program. In FIG. 5, reference numeral 411 is a program determination circuit, reference numeral 4
Reference numeral 12 is a sewing program control circuit, and reference numeral 413 is a drive circuit for driving the shift base 21 and the sewing machine arm 18.

Each of these will be described in detail below. The sewing machine arm 18 shown in FIG. 1 is driven by the drive circuit 413 (FIG. 5) of the controller 41 to move in the Y direction, and at the same time, the thread is fed to perform the sewing operation. On the other hand, the shift table 21 of the work table 10 is pivotally mounted on a ball screw 241 and a guide shaft 242 arranged in the X direction as shown in FIG. The ball screw 241 is driven by the drive circuit 413 of the controller 41 to reciprocate the shift base 21 in the X direction.

Further, the body 210 of the shift base 21 is
As shown in FIG. 6, an arm 213 that rotates about a shaft 212 is mounted, and a swing frame 25 is fixed to an end of the arm 213. And
The frame cylinder 34 is attached to the upper surface of the body 210 via a pivot 214.

The end of the arm 213 is connected to the rod 341 of the frame cylinder 34 via another pivot 215.
Is connected to the tip of. And the frame cylinder 3
When the rod 341 is retracted from the state of FIG. 6 in which the rod 341 of No. 4 is extended, the arm 213 and the swing frame 25 rotate (swing) around the shaft 212 as shown by the arrow in the figure. At this time, the frame cylinder 34 also rotates about the pivot 214 at the same time.

Further, the mounting plate 38 of the swing frame 25
As shown in FIG. 1, a first clamp device 31 is attached to the No. 1 so that the upper pressing plate 15 can be gripped. As shown in FIGS. 3 and 4, the first clamp device 31 grips the upper pressing plate 15 by expanding and contracting the rod 310 of the clamp cylinder 311. That is, as shown in FIG. 4, the clamp cylinder 311 has the clamp shaft 31
The clamp arm 313 which rotates about 2 is driven, and the end 314 of the clamp arm 313 disengages the end 152 of the upper pressing plate 15.

At this time, as described above, the upper pressing plate 1
5 and the swing frame 25 are previously aligned by the locate pin 221 and the fitting hole 151. Further, as shown in FIGS. 2 and 7, the swing frame 25 is provided with a pressing cylinder 38 for raising and lowering the upper pressing plate 15 and pressing the work 81. That is, the pressing cylinder 38 drives the upper presser plate 15 from the raised position shown in FIG. 2 to the lowered position shown in FIG. 7, thereby holding the work 81 between the presser plates 15 and 16. 2 and 7, reference numeral 381 is a mounting plate that holds the upper pressing plate 15 on the swing frame 25. On the other hand, the lower presser plate 16 has the locate pins 223, 2 provided on the shift base 21 as shown in FIG.
After being aligned by 24, it is gripped by the second clamp device 32 and held on the table.

The second clamp device 32 uses the clamp cylinder 321 to grip the lower pressing plate 16 in the same manner as the first clamp device 31 (see FIG. 4). On the other hand, the pin stand 11
As shown in FIG. 2, after being aligned by the locate pin 225 provided on the elevating table 13, the third clamp device 33 holds the position.

As shown in FIG. 2, the third clamp device 33 comprises a clamp cylinder 331 and a clamp arm 333 which rotates about a clamp shaft 332. And
One end of the clamp arm 333 is engaged with and disengaged from the end of the pin base 11, and the other end is connected to the rod of the clamp cylinder 331.

A lifting cylinder 35 is mounted between the lower surface of the lifting table 13 and the base 17, and the lifting cylinder 35 lifts the lifting table 13 together with the pin table 11. In FIG. 2, reference numerals 36 and 37 are guide bushes.

As described above, the photosensors 421 to 428 (FIG. 5) (not shown) are attached to the lower side of the pin base 11 at positions corresponding to the coordinate position 82 (FIG. 1).
As shown in FIG. 1, the pin base 11 and the pressing plates 15 and 16 are formed with closing portions 431 and 432 or openings 441 to 446 at the coordinate positions 82. Whether to provide the closing portion or the opening portion with respect to the coordinate position 82,
Determined by the sewing program.

The program determination circuit 41 of the controller 41, as shown in FIG.
The detection signal of 28 is read, and it is determined whether the block portion or the opening portion is provided at the coordinate position 82.
As a result, the pin base 11 and the pressing plate 15,
The sewing program corresponding to 16 is started. As a result, the sewing program control circuit 412 activates the sewing program, and the drive circuit 413 drives the sewing machine arm 18 and the shift base 11.

As described above, in the XY automatic sewing machine 1 of this embodiment, the pin base 11 and the holding plates 15 and 16 may be exchanged when different sewing programs are to be accommodated. At this time, the exchange of the pin base 11 and the pressing plates 15 and 16 is extremely easy by the positioning by the locate pin and the fitting hole and the holding operation by the clamp devices 33, 31, 32, and can be performed in a short time. it can.

Further, the pin base 11 and the presser plate 15 forming a pair,
Since the same closing portion or opening portion is formed at the 16 predetermined coordinate positions, it cannot be mistaken for a different group. The predetermined sewing program is started depending on the combination of the closed portion and the opening portion, so that the sewing process is made efficient and erroneous sewing is not performed.

Further, since the pin base 11 is provided with only the positioning pins and the driving device thereof is separately arranged, it is extremely inexpensive. As described above, according to this example, the pin base of the positioning pin for setting the reference position of the work can be replaced quickly and inexpensively, and the corresponding sewing program can be automatically started. It is possible to provide a good XY automatic sewing machine device.

[Brief description of drawings]

FIG. 1 is a plan view of an XY automatic sewing machine device of an embodiment.

FIG. 2 is a front view of a left side portion of the XY automatic sewing machine device of FIG.

FIG. 3 is an enlarged view of a mounting portion of the upper pressing plate and the swing frame of the shift base in the embodiment.

FIG. 4 is a front view taken along the line AA of FIG.

FIG. 5 is a signal system diagram of the XY automatic sewing machine device of the embodiment.

FIG. 6 is a side view of a connecting portion between the shift base and the swing frame according to the embodiment.

FIG. 7 is a front view of an upper pressing plate in a lowered state according to the embodiment.

FIG. 8 is a plan view of a conventional XY automatic sewing machine device.

9 is a side view of FIG. 7.

[Explanation of symbols]

 1. ． ． XY automatic sewing machine, 10. ． ． Work table, 11. ． ． Pin stand, 13. ． ． Elevating platform, 15, 16. ． ． Holding plate, 18. ． ． Sewing machine arm, 21. ． ． Shift table, 31-33. ． ． Clamp device,

Claims (3)

[Claims] 1. An XY automatic sewing machine device comprising a work table which fixes a work and linearly moves in the X direction, and a sewing machine arm which linearly moves in the Y direction perpendicular to the X direction. The work table includes upper and lower holding plates for holding the work, a pin table provided with standing positioning pins for setting the reference position of the work, an elevating table for elevating the pin table, and a linear reciprocating movement in the X direction. A shift table for performing movement, the shift table has first and second clamp devices for holding the upper and lower holding plates, and the lift table has a third clamp for holding the pin table. Have a device,
On the other hand, the holding plate is provided with pin holes for inserting the positioning pins of the pin base.
Y automatic sewing machine. 2. The locate pin for positioning or a position corresponding to the locate pin between the pair of the shift base and the holding plate and the pair of the lift base and the pin base. An XY automatic sewing machine device, characterized in that the provided fitting holes are provided corresponding to each other. 3. The X according to claim 1 or 2,
The -Y automatic sewing machine further includes a controller for operating a predetermined sewing program and a plurality of optical sensors arranged at predetermined coordinate positions, while the pin base and a presser plate to be paired with the pin base are provided. , The same set of blocking portions or openings are formed corresponding to the coordinate positions, respectively, and the controller receives the detection signal of the optical sensor for the blocking portion or opening, and detects the detection signal. An XY automatic sewing machine characterized by activating a predetermined sewing program based on the combination.