JPH07133037A - Centering of square-shaped cloth piece - Google Patents

Abstract

PURPOSE:To work a product to a finely finished state by developing a square-shaped cloth piece and placing the cloth piece on a placing board, shifting the left and right parts of the placing board so that the left and right corners of the cloth piece which is laterally assorted are set in an equal distance from the center of the placing board, and then catching the cloth piece by a chuck. CONSTITUTION:The angular parts B and D of a square-shaped cloth piece 1 such as a towel and a sheet in a dangling state which is generated by holding the diagonal parts A and C of the cloth piece 1 by the respective chucks 2 and 3 and suspending the diagonal parts are pulled from outside by a pulling device 4, and the dangling lower part of the cloth piece 1 is opened, and a chuck 5 having a three-pronged fork- shaped hook is intruded into the opened port part of the opened cloth piece 1. When a sensor senses that either of two between-hook intervals of the three-pronged fork- shaped chuck 5 pins the cloth piece 1, a part of one side of the cloth piece 1 is caught by the hook which nips the cloth piece 1. When, the points A and E of the cloth piece are caught again by the other chuck, and the cloth piece is transferred to a placing board which is constituted of a pair of belt conveyors 8 and 9 which are in the lateral symmetry, and centering is carried out by the mutual revolution of the conveyors 8 and 9 in the reverse direction each other.

Description

Detailed Description of the Invention

[0001]

The present invention relates to a pile of towels, towels, wrapping cloths, sheets after washing and dewatering.
The present invention relates to a method of unfolding and mounting one square cloth piece such as a table cloth on the mounting table by aligning the center of the mounting table and the center of the square cloth piece.

[0002]

2. Description of the Related Art Conventionally, in a Landry factory, rectangular pieces of cloth are washed, dehydrated and dried, and then piled up on a placing place. It is difficult for machines to automatically align flexible objects such as rectangular pieces of cloth, and therefore, the placed rectangular pieces of cloth are manually taken out one by one and unfolded, then ironed or folded and wrapped. It was sent to the process such as.

However, the method of picking up the piled up square-shaped cloth pieces one by one and deploying them by hand requires a lot of manpower, and the operator also performs simple labor in a bad environment of high temperature and high humidity. As a result of repeated work for a long time, work motivation is reduced and efficiency is reduced, resulting in higher costs.Therefore, methods and devices for automating this process have been developed, and various rectangular cloths have been developed. Methods and devices have been proposed for automatically deploying strips.

[0004]

In these conventional methods and apparatuses for automatically deploying a rectangular cloth piece, since the position at which the rectangular cloth piece is gripped is incorrect, the center of the apparatus and the rectangular cloth piece is When folding the piece of cloth with the folding device,
There was a problem that the product after processing could not be prepared due to unevenness such as corners and edges not matching or ironing residue. SUMMARY OF THE INVENTION In order to solve the above problems, the present invention uses a rectangular cloth piece such as a towel, an oscillating cloth, a wrapping cloth, a sheet, and a table cloth, which is linear on an edge of the rectangular cloth piece on a mounting table or a processing device. It is an object of the present invention to provide a method of supplying a center while also providing the above.

[0005]

In order to achieve the above-mentioned object, a pile of square-shaped cloth pieces is suspended by a conventional method, that is, by grasping and hanging an arbitrary part of the piled square-shaped cloth pieces.
Next, grasp the lowermost end of the hanging rectangular cloth piece, that is, one corner and remove any part of the grip to hang down the rectangular cloth piece, and grasp the hanging lowermost end, that is, the diagonal portion. ,
By stretching the two grips in the lateral direction, the diagonal parts of the rectangular cloth piece are gripped and hung down in an inverted triangular shape.

[0006] The hem of the drooping square-shaped cloth piece is opened, a part of an arbitrary side (edge) is gripped, the grip of the corner portion on the gripping side is released, and the square-shaped cloth piece is drooped. The edge of the lower side of the hanging down rectangular piece of cloth is aligned with the line at a right angle to the center of the mounting table and is mounted to release the grip. The rectangular cloth pieces on the left and right of the center of the mounting table are individually moved in the center direction by a belt conveyor or a roller. When the right and left corners of the lower side of the rectangular cloth piece are equidistant from the center of the mounting table, the movement of the right and left rectangular cloth pieces is stopped. Grasp the left and right positions of the rectangular cloth pieces that are equidistant from the center of the mounting table,
While holding the rectangular piece of cloth, supply it by moving the center of the rectangular piece of cloth (the center of the width of the piece of cloth) and the center of the table or the apparatus while moving it while holding the rectangular piece of cloth. A centering method for square shaped cloth pieces.

[0007]

The centering method of the square-shaped cloth piece configured as described above is such that when two corners of one side of the rectangular-shaped cloth piece are gripped at two positions equidistant from two corners sharing one side, the gripping is performed. Is based on grasping at the same distance from the center of one side. To carry out this idea, the square cloth piece is unfolded and placed on the mounting table to prevent the square cloth piece from shaking. Place the square-shaped piece of cloth placed on the placing table in the left and right from the center so that the left and right corners of any side of the placed square-shaped piece of cloth are equidistant from the center of the placing table.
Move them separately so that they are caught at the position of.

When the right and left corners of the side of the rectangular cloth piece are equidistant from the center of the mounting table, the edges of the rectangular cloth piece are hung by the left and right gripping members equidistant from the center of the mounting table. Then, the left and right gripping members grip the rectangular cloth pieces at positions equidistant from the center of the rectangular cloth piece. Since the positions of the gripping members are equidistant from the respective corners of the rectangular cloth piece, if the distances from the respective ends of the mounting table or the device to the gripping members are equal, a square shape is formed on the center of another mounting table or device. The center of the piece of cloth is united.

[0009]

[Embodiment 1] Referring to the drawings, an embodiment of the present invention will be described. In FIG.
Let C and D. In FIG. 2, when the diagonal parts A and C are grasped and hung by the first and second chucks 2 and 3, the hanging corner parts B and D of the rectangular cloth piece are overlapped. Since it is difficult to individually grip each side of the rectangular cloth piece 1 with this, the suction device 4 is attached from each side of the corners B and D of the rectangular cloth piece 1.
Pull down to open the hanging lower part of the rectangular cloth piece 1, and insert the chuck 5 having a three-pronged claw into the opening of the opened rectangular cloth piece 1.

In FIG. 3, when the sensor detects that the square-shaped cloth piece 1 is sandwiched between the two claws of the three-pronged jaw chuck 5, the square-shaped cloth piece 1 is clamped by the claws. Grab a part of one side of the shaped cloth piece 1. In FIG. 4, for example, when a portion E of the CD side of the rectangular cloth piece 1 is grasped, the first chuck 2 grasping the corner portion C is released. Then, the hanging rectangular cloth piece 1 becomes a trapezoidal piece and a triangular piece. In FIG. 5, the points A and E of the rectangular cloth piece are re-gripped by the third and fourth chucks 6 and 7, and the rectangular cloth piece 1 is placed on a mounting table composed of a pair of symmetrical belt conveyors 8 and 9. Move to.

In FIG. 6, left and right belt conveyors 8 and 9
The right and left side sensors 11 are provided at two points in a range narrower than the cloth width on the line perpendicular to the axis of the driving roller 10 of FIG. 1, and the lower side BC of the hanging trapezoidal cloth piece 1 on one side of the trapezoidal cloth piece 1 is the left and right belt conveyor 8. When the lower side BC comes to the position of the left side sensor-11, the third chuck 6 stops moving, and when the lower side BC comes to the position of the right side sensor-11, 4 Stop the movement of the chuck 7. After that, by removing the third and fourth chucks 6 and 7 from the rectangular cloth piece 1, the lower side BC of the trapezoidal piece of the rectangular cloth piece 1 is moved to the left and right belt conveyors 8.
The drive roller 9 of FIG. 9 is placed in line with the axis perpendicular to the axis of the drive roller 10.

In FIG. 7, the third and fourth chucks 6 and 7 are shown.
After removing the square cloth 1 from the square cloth piece 1, the square sensors 12 are installed at the left and right positions at the same distance c from the central axis (center of the mounting table) where the left and right belt conveyors 8 and 9 are symmetrical. The left and right belt conveyors 8 and 9 are rotated toward the central axis until the corner B and the corner C of the cloth piece 1 come to the positions of the left and right corner sensors-12. When the corner B and the corner C of the rectangular cloth piece 1 come to the positions of the left and right corner sensors-12, the left and right belt conveyors 8,
Each 9 stops independently. At this time, the corners B and C of the rectangular cloth piece 1 are equidistant c from the central axis.

In FIG. 8, left and right belt conveyors 8 and 9
The bifurcated claw chucks 13 and 14 provided at the symmetrical position d concentric with the central axis of are moved to grasp the corners B and C of the rectangular cloth piece 1. This is a bifurcated jaw chuck 1 at a position equidistant from the center F of the side BC of the rectangular cloth piece 1.
3 and 14 respectively grasp the side BC of the rectangular cloth piece 1, and the bifurcated jaw chucks 13 and 14 grasp the cloth side BC at equal distances b from the corners B and C, respectively.
The bifurcated claw chucks 13 and 14 grab the side BC of the rectangular cloth piece 1 and hang it, and then move away from the left and right belt conveyors 8 and 9 between the bifurcated claws on the chuck that moves on the rail. It is grabbed by a chuck with a claw that goes in. The chuck on which the rectangular piece of cloth is suspended moves the rail to reach the next mounting table or processing device. After that, the square-shaped cloth pieces are supplied with the center of the mounting table or the processing device.

[0014]

Since the present invention is constructed as described above, it has the following effects. By automating, it was possible to eliminate the work in a bad environment and to perform the work of deploying the rectangular shaped cloth piece continuously and quickly and efficiently. When the square-shaped cloth pieces are folded, the processed products are finished because the corners and edges of the square-shaped cloth pieces are aligned and folded.

[Brief description of drawings]

FIG. 1 is a state diagram showing an embodiment of a rectangular cloth piece.

FIG. 2 is a conceptual diagram showing an embodiment at a position where a corner portion of a rectangular cloth piece is grasped and a hanging corner portion is widened.

FIG. 3 is a conceptual diagram showing an embodiment in which a hanging corner of a rectangular cloth piece is widened and a three-pronged claw chuck is inserted.

FIG. 4 is a conceptual diagram showing an embodiment in which a part of one side of a rectangular cloth piece is held by a three-pronged chuck.

FIG. 5 is a conceptual diagram showing an embodiment at a position where a rectangular cloth piece is moved to a mounting table of a belt conveyor.

FIG. 6 is a conceptual diagram showing an embodiment in which one side of a rectangular cloth piece is placed on a mounting table of a belt conveyor on a line perpendicular to the mounting table center axis.

FIG. 7 is a conceptual diagram showing an embodiment in which two corners sharing one side of a rectangular cloth piece are equidistant from the axis of the mounting table center of the belt conveyor.

FIG. 8 is a conceptual diagram showing an embodiment in which one side of a rectangular cloth piece is suspended by a bifurcated jaw chuck.

[Explanation of symbols]

 1 square-shaped cloth piece 2 1st chuck 3 2nd chuck 4 suction device 5 3 piece claw chuck 6 3rd chuck 7 4th chuck 8 left belt conveyor 9 right belt conveyor 10 drive roller 11 side sensor-12 angle sensor-13 left bifurcation Nail Chuck 14 Right Bifurcated Nail Chuck

Claims (2)

[Claims] 1. An arbitrary one corner A of a rectangular cloth piece (1)
The lower side BC of the rectangular piece (1) of the rectangular cloth hanging down on the rectangular table with the middle E of one side having
Are placed so that they are parallel to the sides of the mounting table, and the left and right corners B and C of the lower side BC are moved to the same distance from the center of the mounting table, and then the center of the mounting table is moved. Characterized by chucks (13) and (14) having the same center between chucks, gripping the corners B and C of the rectangular cloth piece (1), respectively, and aligning the centers with other mounting tables. The centering method for square shaped cloth pieces. 2. A centering method for a rectangular cloth piece, which comprises the following steps. (A) A first step of grasping any one corner portion A and its diagonal portion C of the rectangular cloth piece (1). (B) A second step in which the hem of the hanging down rectangular-shaped cloth piece (1) is expanded and the three-pronged claw chuck (5) is inserted into the opened hem. (C) Grasp a part of one side of the rectangular cloth piece (1) with the three-pronged claw chuck (5), remove the corner C on the side of the three-pronged claw chuck (5) and remove the rectangular shaped cloth piece (1). The third step of hanging. (D) A fourth step in which the lower side BC of the hanging down rectangular-shaped cloth piece (1) is placed parallel to the edge of the placing table on the rectangular placing table. (E) The two corners B and C sharing the lower side BC of the rectangular cloth piece (1) are equidistant from the center of the mounting table, and the corners B and C are directed toward the mounting table center position, respectively. Or the fifth step of moving with a roller. (F) A sixth step of grasping and hanging up around the corners B and C of the rectangular cloth piece (1) with two chucks (13) and (14) having the same center as that of the mounting table.