JPS6035500Y2 - Work position correction device - Google Patents

Description

[Detailed description of the invention] The present invention is based on materials supplied for specific processing,
That is, the present invention relates to a device for automatically and accurately positioning a workpiece at an optimal fixed position for the processing process prior to processing the workpiece.

As is well known, there are various positioning devices for the workpiece, but the present invention is particularly designed to position the part of the piece of fabric to be sewn on the sewing machine side before performing the required sewing or processing on a cut piece of fabric at a specific position. This is suitable for correcting the shape and positioning in advance so that the part to be sewn is correctly guided to the sewing machine sewing section side, that is, to the sewing machine presser foot entrance side when feeding the sewing machine.

Various methods are known for positioning this type of fabric piece, such as regulation by jetting pressurized air, regulation along a ruler guide, regulation by rollers, etc. , it is a flat workpiece with a limited thickness, and it is extremely difficult to accurately position the fabric piece as it is subject to deformation and variation in movement posture due to tension, tension, etc. during transportation and movement. ,
Conventional means are difficult to correct and maintain the overall posture of a piece of fabric with various cutting shapes, or to correctly guide the desired part to be sewn to the machine presser foot side of a sewing machine. Various problems remain.

The situation is also similar for a workpiece that is relatively thin and has a wide area like a piece of dough.

The present invention enables high-precision automatic positioning to be achieved with high efficiency for such workpieces that have a relatively small thickness and a wide area, and is characterized by the following: a correction plate that is suspended from a rotating support shaft and has a correction plane that is horizontally rotatable about the support shaft parallel to the workpiece placement plane of the correction table, and a correction plane of the correction plate that is attached to the workpiece on the correction table. A lifting clutch that can be freely pressed, a left and right slider that can move the lifting clutch in the left and right direction of the correction table, and a front and back slider that can move the left and right slider in the front and back direction of the correction table; It consists of the correction plate, a lifting clutch, and a forward/backward slider that allows the entire left and right, front and rear sliders to be moved freely toward the correction table.

The present invention will be described in detail below with regard to the illustrated embodiment. The position correction table 2 is fixed at a fixed position, and the surface on which the dough piece 1 is placed is a smooth plane so that the dough piece 1 can be slidably moved. Although not shown, on the mounting table 2, for example, fabric pieces 1 stacked at different positions are placed on the same table by an appropriate gripping member, or transferred and placed on the same table by a conveyor. It is also assumed that the piece of fabric 1 positioned on the same table is sent in the direction of arrow A in FIG. 1 by an appropriate conveying and moving means.

A slide rail 3 is provided on the negative side of the position correction table 2 in the longitudinal direction.
A forward/backward slider 4 is provided so as to be able to move forward and backward in the direction of the longitudinal axis X perpendicular to the correction table 2 via a slide rail 4a integrally provided at the front end of the forward/backward slider 4.
is also provided with a front and rear slider 5 that can move forward and backward in the X direction of the front and back axis, and at the front end of the front and rear slider 5 there is a left and right slider 6 that can move back and forth in the Y direction of the left and right axis that is parallel to the longitudinal direction of the position correction table 2. is installed so that it can slide freely.

Although not shown, when installing the left and right sliders 6 to be slidable on the front and rear sliders 5, for example, a dovetail groove and a convex portion that engages with the mutually joined portion of the sliders 5 and 6 are installed. A concave-convex engagement guide structure is provided, and a rotary support shaft 8 that can freely rotate forward and backward around the θ axis is attached to the front end of a holder 7 that is integrally fixed to the left and right sliders 6.
The correction plate is inserted and supported so as to be able to rise and fall freely in two vertical axes perpendicular to the surface, and has a correction plane 9a parallel to the fabric piece placement plane of the position correction table 2 at the lower end of the rotational support shaft 8. In the illustrated example, plate 9 is supported.
is a quadrilateral plate shape, but this shape has a corner,
The same effect can be obtained if the correction plane 9a is round and has a considerable area.

Further, a latch actuation shaft 10 is inserted and supported in the holder 7, and is movable up and down in the vertical axis Z direction, and is engaged with the lower end of the actuation shaft 10 through a flange 11. Since a two-pronged clutch 12 is provided, the rotating support shaft 8 correction plate 9 is moved along with the clutch 12 through the vertical movement of the clutch actuating shaft 10, and the correction plane 9a of the correction plate 9 is moved to the fabric on the correction table 2. The clutch actuating shaft 10 is brought into pressure contact with the piece 1 so as to be able to move toward and away from it, and a lifting drive member 13 such as an air cylinder is used to move the clutch actuating shaft 10 up and down. teeth,
For example, a stepping motor 14, a transmission mechanism 15 such as a pulley, a belt, etc. are used, and these driving devices are installed using a holder 7 etc. via a bracket or the like as appropriate.

The advance/retreat slider 4 supports the entire device and is capable of moving forward and backward onto the position correction table 2. Therefore, an advance/retreat drive member such as an air cylinder is used, and the front/rear slider 5, left/right slider 6, etc. Since the correction plates 9 are interlocked with each other, for example, a rack is provided on the sliders 5 and 6, and a drive pinion that is rotated forward and backward by a stepping motor or the like is meshed with the rack. The driving means can be freely designed and is omitted in the illustrated example.

When correcting the piece of fabric 1 using the apparatus of the present invention, as shown in the first figure, position correction sensing members 21 to 21 using photo sensors or the like are placed on the position correction table or above or above and below the table.
26 will be installed.

These sensing members 21 to 26 will be appropriately installed depending on the shape of the fabric piece 1 and the sewing area.
First, assume a reference line B for position correction, and use this reference line B.
The sensing member 21 occupies the area shown in Figure a along both sides of the
, 22, 23, and 24, and then fabric piece 1 on the reference line B.
Sensing members 25 and 26 are disposed on the front side in the flow direction A for sensing the front end of the fabric or a specific front end opening.

The fabric piece 1 is first placed on the position correction table 2 equipped with the sensing means as shown in the figure by retracting the entire device using the forward/backward slider 4, and then the forward/backward slider 4
The entire device is moved forward toward the correction table 2, the correction plate 9 is positioned above the side c on which the fabric piece 1 is to be corrected, and the clutch actuating shaft 10 is lowered to move the clutch 12. The rotation support shaft 8 is lowered through the correction plate 9 to press the correction plane 9a onto the fabric piece 1, and the rotation support shaft 8 rotates forward and backward around the θ axis, and the front and rear slider 5 rotates in the X-axis direction and the left and right sliders. Through each forward and backward movement in the Y-axis direction by 6, the area B whose one side C is defined by the sensing members 21.23 and 22.24
The position is corrected so that it falls within 1.

That is, the correction plane 9a clamps one side C of the fabric piece 1 on the plane of the correction table 2, and can perform planar rotational interlocking around the θ axis and forward/backward forward/leftward forward/backward movement in the X-axis and Y-axis directions. By being transmitted to the fabric surface and sliding the fabric surface, the one side C is smoothly and easily accommodated within the range B1 of the sensing members 21 to 24, and after further correction, the left and right sliders 6 By moving the chisel in a straight line, piece 1 of the dough is
Correct orientation of the entire piece of fabric 1 will be obtained by moving it until its front end A is sensed by the sensing member 25.

At this time, if the specific part opening at the front end is also sensed by the sensing member 26, the correction and correct orientation of the one side and the front end opening can be achieved very completely, and thereby the piece of fabric 1 can be sewn. Prior to other processing, positioning in an appropriate posture can be obtained fully automatically, and this can be achieved with extremely high precision by arranging and numbering the sensing members 21 to 26 groups according to their shapes. become.

Once the positioning is completed in this way, the correction plate 9
is raised and separated from the fabric piece 1, and the entire device is retracted to the old position via the slider 6.5.4.

According to the present invention, when a workpiece made of a material such as a piece of cloth 1 or a relatively thin film, sheet, cloth, paper, etc. is subjected to the desired processing, its shape and posture can be adjusted. This is extremely excellent in that it can correct any disturbance or deformation in advance, and it can reliably and easily provide correct positioning.

That is, unlike positioning using air jets, guide regulations, rollers, etc., on the fixed plane of the correction table 2, the correction plate 9 having a correction plane 9a parallel to the plane can be rotated around the θ axis and crossed X, Y. Since the workpiece is moved by moving forward and backward toward the axis and the workpiece surface is corrected while being supported by the wide correction plane 9a, the overall shape, orientation correction, and orientation can be obtained with great certainty.

In addition, the rotation support shaft 8 around the θ axis is separately supported on the left and right sliders 6, the left and right sliders 6 are separately supported on the front and rear sliders 5, and these are all supported by the forward/backward slider 4, so that the device can be The assembly and drive structure can be easily polarized, and the front and rear sliders 5 and left and right sliders 6 can be moved forward and backward in a fine manner, so that combined with the forward and reverse rotation around the θ axis, the correction plate 9 can be moved at a high level and within a range. A wide correction movement for positioning is provided, and rough positioning, finer positioning, and preparation for moving to the next process without causing deformation of the workpiece after correction are smoothly carried out. Automatic control is also simple and easy. It is highly useful for positioning various types of workpieces, including pieces of fabric.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of an embodiment of the device of the present invention, FIG. 2 is a side view of the same, and FIG. 3 is a front view of the main parts of the correction plate. 1...Fabric piece, 2...Position correction table, 3
...Slide rail, 4...Advance/reverse slider, 5...Front/back slider 6...
・Left and right slider, 7...Holder, 8...
...Rotation shaft, 9...Correction plate, 9a.
. . . Correction plane, 12 . . . Lifting clutch, 21 to 26 . . . Sensing member.

Claims (1)

[Scope of utility model registration request] a correction plate that is suspended from a rotating support shaft and has a correction plane that is horizontally rotatable about the support shaft parallel to the workpiece placement plane of the correction table, and a correction plane of the correction plate that is attached to the workpiece on the correction table. A lifting clutch having a pressing contact, a left and right slider that allows the lifting clutch to be moved in the left and right direction of the correction table, and a front and back slider that allows the left and right slider to be moved in the front and back direction of the correction table. A workpiece position correction device comprising: the correction plate, a lifting clutch, and a forward/backward slider that allows the entire left and right, front and rear sliders to be freely moved toward a correction table.