JP4034902B2 - Work set device for 2D measuring machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention includes a horizontal table made of a glass plate, and is provided in a two-dimensional measuring machine that images and measures a workpiece, which is an object to be measured, by an imaging unit that moves horizontally above the table. The present invention relates to a work setting device for horizontally setting a flat work between a table and a table.
[0002]
[Prior art]
In the two-dimensional measuring machine, an object to be measured is placed on a horizontal table made of a glass plate, and the object to be measured is picked up by a horizontally movable imaging means disposed at a predetermined interval above the table. The shape and dimensions of the object to be measured are measured. When the object to be measured is relatively small, the operator of the two-dimensional measuring machine sets the object to be measured on the table by one person, and after the measurement is completed, the operator also performs the two-dimensional measurement of the object to be measured. I was paying out from the machine. On the other hand, screen plates used for manufacturing plasma displays and the like have been rapidly increasing in size in recent years, and there are, for example, those exceeding 1700 mm × 1700 mm. When measuring such a large screen plate with a two-dimensional measuring machine, the four sides of the screen plate are pasted on a rectangular frame made of aluminum in order to keep the screen plate stretched. Since it is difficult for one person to set the workpiece, which is the object to be measured, stretched on the frame in this way, two persons place the work on the table and slide the table to position it.
[0003]
[Problems to be solved by the invention]
In the case of a large workpiece, two workers are always required for a series of operations from carrying the workpiece to the table, placing the workpiece on the table, and positioning the workpiece to a position suitable for measurement. Therefore, the trouble that man-hours increase arises. In addition, since the workpiece is positioned by sliding the glass table upper surface, there arises a problem that a frame made of a metal material such as aluminum damages the upper surface of the table.
[0004]
In view of the above problems, the present invention is a work that can be performed by one person without damaging the upper surface of the glass table, from the loading of the work to the two-dimensional measuring machine excluding the work transportation to the dispensing. It is an object to provide a set device.
[0005]
[Means for Solving the Problems]
In order to solve the above-described problems, the present invention provides a two-dimensional measuring machine that includes a horizontal table made of a glass plate and images and measures a workpiece that is an object to be measured by an imaging means that moves horizontally above the table. In a workpiece setting device that is provided and sets a flat workpiece horizontally between the imaging means and the table, it is attached to the front part or rear part of the two-dimensional measuring machine, and the throwing-out / posting posture can be leaned diagonally from the front A workpiece receiver swingable between a workpiece and a retracted posture in which the workpiece can be placed in a horizontal state, and an engaging means for engaging the workpiece held by the workpiece receiver in the retracted posture state, The workpiece is pulled out from the workpiece holder in a horizontal state so that the workpiece does not contact the table, and the drawn workpiece is returned to the workpiece receiver in the horizontal state. A flexible workpiece moving table and a positioning stopper that protrudes on the movement trajectory of the workpiece while the workpiece is pulled out from the workpiece receiver by the workpiece moving table and regulates the movement of the workpiece in the direction of being stored in the workpiece receiver. And automatically placing the work on the table.
[0006]
When the workpiece is input to the two-dimensional measuring machine, the workpiece receiver is set in the input / output posture in advance, and the workpiece is leaned against the workpiece receiver in the input / output posture. When the workpiece is leaned, the workpiece is leveled by changing the posture of the workpiece receiving portion to the retracted posture. When the workpiece becomes horizontal, the engaging means provided on the workpiece moving table engages with the workpiece, and when the workpiece moving table is horizontally moved to the back side of the two-dimensional measuring machine in this state, the workpiece is pulled out from the workpiece receiver. When the workpiece is pulled out, the workpiece does not float and come into contact with the table, so that the table is not damaged. When the workpiece is pulled out by a predetermined distance and translated to the measurement position, the positioning stopper protrudes. When the workpiece moving table is returned to the near side with the positioning stopper protruding, the workpiece is abutted against the positioning stopper and positioned. When the measurement of the positioned workpiece is completed, the positioning stopper is stored, the workpiece is returned into the workpiece receptacle, and the posture of the workpiece receptacle is changed to the loading / dispensing posture. Then, since the workpiece is leaned against the workpiece receptacle, the workpiece can be easily taken out from the workpiece receptacle.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
2 to 3, reference numeral 1 denotes a two-dimensional measuring machine, which is covered by a cover 11 and is provided in a pair of left and right sides along a longitudinal slide rail (not shown) in the front-rear direction (Y direction). ) Is provided with a portal frame 2 that moves horizontally. The portal frame is provided with a movable element 3 that horizontally moves in the left-right direction (X direction) along a slide rail (not shown) that is long in the left-right direction covered by a cover 21. The movable element 3 is provided with a CCD camera 31 that performs vertical downward imaging, and the CCD camera can move in the XY direction to freely image the measurement object placed on the table 12. it can. Although not shown, an illuminating unit is attached below the table 12 and is formed of a transmissive glass that transmits light irradiated from the illuminating unit to reach the object to be measured.
[0008]
A workpiece receiver 4 shown as a perspective view in FIG. 1 is attached to the front surface of the two-dimensional measuring machine 1. The work receiver 4 includes an arm 42 slidably mounted by a rotating shaft 41 disposed in a pair of left and right, and a lattice-shaped receiving plate 44 slidably engaged with the arm 42. The air cylinder 43 is installed between the main body of the two-dimensional measuring machine 1. Further, a beam 46 that is long in the left-right direction is provided at the lower end of the receiving plate 44, and the work 6 is engaged with the work receiving 4 by the beam 46. When the air cylinder 43 is contracted, the workpiece receiver 4 is in a loading / dispensing state in which it is inclined downward toward the receiving plate 44 as shown. In this state, the operator leans the workpiece 6 against the workpiece receiver 4. As shown in FIG. 4, the workpiece 6 is composed of an aluminum frame having a rectangular cross section and a sheet 62 that is an object to be measured that is pressure-bonded to the upper surface of the frame. The frame is formed by assembling an upper side 61a, a lower side 61b, and a pair of left and right sides 61c into a square, and has a size of about 1700 mm × 1700 mm, for example. The sheet 62 is made of polyester and has a mesh-like or stripe-like pattern 62p printed thereon. On the left and right sides of the table 12, hollow rods 51 that are long in the front-rear direction are attached so as to be parallel to each other, and a workpiece moving table 5 that is movable in the front-rear direction using the hollow rod 51 as a rod of a rodless cylinder. It is attached. The workpiece moving table 5 is a rectangular plate-like body that is long in the left-right direction, and includes a back claw 52a and a front claw 52b on the upper surface. The back claw 52a and the front claw 52b face each other in the front-rear direction at a distance slightly larger than the width dimension of the upper side 61a of the work 6, and the air cylinder 43 of the work receiver 4 is extended to lean the work receiver 4 When the workpiece 6 is placed in the horizontal storage posture, the workpiece moving table 5 is waiting at a position where the upper side 61a is loosely fitted between the back claw 52a and the front claw 52b. When the workpiece 6 is moved to the back side with the workpiece 6 being horizontal and the upper side 61a being loosely fitted between the back claw 52a and the front claw 52b, the front claw 52b is engaged with the upper side 61a and the workpiece is moved. As the platform 5 moves, the workpiece 6 is pulled out from the workpiece receiver 4. At this time, the roller 45 receives the left and right sides 61c, and the workpiece 6 is smoothly pulled out without contacting the arm 42 or the receiving plate 44. On the other hand, a rectangular work-fixing base 7 that is long in the left-right direction is attached slightly behind the attachment position of the rotation shaft 41. A plurality of rollers 71 for supporting the left and right sides 61c and the lower side 61b are attached to the upper surface of the work fixing base 7, and one back stopper 72a and two front stoppers 72b, which are positioning stoppers, are attached to be freely movable. It has been. Further, the distance in the front-rear direction between the back stopper 72a and the front stopper 72b is set to a distance at which the lower piece 61b is loosely fitted. Further, although not shown, a photoelectric position sensor is attached to the work fixing base 7, and it is detected that the outer peripheral surface of the lower side 61b has reached the work fixing base 7 from any of the front and rear directions. Can do.
[0009]
Referring to FIG. 5, when a measurer who is an operator of the two-dimensional measuring machine leans the work 6 against the work receiver 4, the operation switch (not shown) is switched from paying-out to turning-on. Then, the air cylinder 43 extends to rotate the workpiece receiver 4 from the loading / unloading state to the retracted state. When the workpiece receiver 4 is in the retracted state and the workpiece 6 becomes horizontal, the workpiece moving table 5 moves toward the back from the stand-by position. The workpiece 6 is pulled out from the workpiece receiver 4 by the movement of the workpiece moving table 5. At this time, the workpiece 6 is held by the workpiece moving table 5, the roller 45, and a plurality of rollers 71 provided on the workpiece fixing table 7, and is not in contact with the table 12. When the sensor detects that the work 6 is further pulled out and the outer peripheral surface of the lower side 61b has reached the work fixing base 7, the moving speed of the work moving base 5 is reduced and further stopped.
However, even if the supply of working air to the rodless cylinder is stopped, the braking force may be dull due to the working air pressure in the rodless cylinder, and it may not stop at the desired position. Therefore, the back stopper 72a protrudes upward and engages with the inner peripheral surface of the lower side 61b of the work 6 to ensure the stop of the work moving table 5, and to prevent the lower side 61b from falling from the work fixing table 4. . Therefore, the workpiece 6 is held by the workpiece moving table 5 and the workpiece fixing table 7 with the workpiece moving table 5 stopped. The work moving table 5 pushes the work 6 forward at a low speed after stopping. Then, at the same time as the work moving table 5 starts moving forward, the front stopper 72b of the work fixing table 7 is protruded upward. When the front stopper 72b protrudes upward, a low-pressure air pressure generates a stress in a direction to return the workpiece moving table 5 to the front side, the outer peripheral surface of the lower side 61b is pressed against the front stopper 72b, and the workpiece 6 is accurately positioned. When positioning is completed in this way, measurement is performed on the sheet 62 of the workpiece 6 by a normal measurement procedure. When the measurement is completed, the measurer returns the operation switch from being turned on to being paid out. Then, the low-pressure operating pressure intended to move the workpiece moving table 5 to the front side is released, the lower side 61b is not pressed against the front stopper 72b, and the back stopper 72a and the front stopper 72b are buried downward. Further, the work moving table 5 is temporarily retracted to the back side, and the work receiver 4 is placed in a horizontal storage state. When the workpiece receiver 4 is in the retracted state, the workpiece moving table 5 is returned to the front, and the workpiece 6 is stored in the workpiece receiver 4. When the storing step is completed, the air cylinder 43 is contracted to return the workpiece receiver 4 to the loading / unloading state. At that time, although the workpiece 6 is gradually got up from the horizontal state to the diagonally upper side 61a is caught on the Okutsume 52 a and the front claw 52 b because only been loosely fitted between the Okutsume 52 a and the front claw 52 b The upper side 61a can be detached from the workpiece moving table 5 without any problem. Then, the work 6 that has been leaned diagonally is lifted and paid out from the work receiver 4. In the above-described embodiment, the workpiece 6 is input / discharged from the front to the two-dimensional measuring machine 1, but may be input / discharged from the rear.
[0010]
【The invention's effect】
As is clear from the above description, the present invention can input and dispose a work in a standing state, so that even a large work can be loaded and dispensed except for conveyance by one person, for example. it can. Further, since the work does not contact the table, the table can be prevented from being damaged by the work.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a configuration of an embodiment of the present invention. FIG. 2 is a plan view showing a state of being attached to a two-dimensional measuring machine. FIG. 3 is a side view showing a state of being attached to a two-dimensional measuring machine. [Fig. 4] Plan view showing workpiece shape [Fig. 5] Timing chart [Explanation of symbols]
1 2D measuring machine 4 Work receiving 5 Work moving table 6 Work 7 Work fixing table 12 Table 31 CCD camera

Claims (1)

Provided in a two-dimensional measuring machine having a horizontal table made of a glass plate and imaging and measuring a workpiece, which is an object to be measured, with an imaging means that moves horizontally above the table, and between the imaging means and the table In a workpiece setting device that sets a flat workpiece horizontally on
A workpiece receiver attached to the front or rear of the two-dimensional measuring machine and swingable between a loading / dispensing posture in which the workpiece can be leaned diagonally from the front and a retracted posture in which the workpiece can be placed in a horizontal state;
Engaging means for engaging the workpiece held by the workpiece receiver in the retracted posture is provided, and the workpiece is pulled out and pulled out from the workpiece holder in a horizontal state so that the workpiece does not contact the table. A workpiece moving table that can be moved back and forth to return the workpiece to the workpiece holder in a horizontal state,
A positioning stopper that protrudes on the movement trajectory of the workpiece in a state where the workpiece is pulled out from the workpiece receiver by a predetermined distance by the workpiece moving table, and restricts the movement of the workpiece in the direction stored in the workpiece receiver;
A work setting device for a two-dimensional measuring machine, wherein a work is automatically placed on a table.

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