JPH0146206B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention is a method for converting a relatively wide plate material into two
It relates to an automatic press machine that automatically punches a product by moving and positioning it in the axial direction, and more specifically, it relates to the center line of a plate material and the inclination of the alignment of multiple processing positions on the plate material with respect to the X-axis or Y-axis direction. The present invention relates to a press processing device capable of correcting or correcting.

Conventionally, for example, as shown in FIG. 6A, B, and C,
When punching a large number of products 3 such as printed circuit boards for electronic devices from a relatively wide plate material 1, pilot holes are drilled at positions corresponding to each product and a pilot pin is inserted into each pilot hole. , the plate material 1 is accurately positioned with respect to the mold.

That is, conventionally, the plate material 1 on the table is gripped by the gripping claws of a movable positioning device provided on the table so as to be movable in the two axis directions of X and Y, and the plate material is positioned by the movable positioning device. There is. Therefore, when inserting the pilot pin into the pilot hole after moving and positioning the plate material in the X and Y axis directions, for example, if the center of the pilot hole and the axis of the pilot pin are slightly misaligned, There was a problem in that the plate material had to be slightly moved again in the X and Y axis directions in accordance with the amount of deviation, and the movement for correction was troublesome.

This invention was made in view of the above-mentioned conventional problems, and its purpose is to be able to correct the inclination of the center line of a plate material with respect to the An object of the present invention is to provide an automatic press working device having a function of correcting pitch errors and alignment errors of the pitch marks and positioning them even when the pitch marks are inclined with respect to the X-axis or Y-axis direction.

Hereinafter, embodiments will be described in detail with reference to the drawings.

Automatic press device 7 shown in Figures 1, 2, 3 and 4
is the press 9 and the press center 11 (see Figure 2).
A device 13 for moving and positioning the plate 1 in the two axis directions of X and Y, and a pitch mark 5 (see Fig. 6) and a center mark (center line A detection device 15 is provided for detecting whether or not the object (shown as a black dot at the top) occupies the correct position as it should.

Furthermore, it is equipped with a numerical control device 17 that controls each of the devices described above based on the detection data from the detection device 15.

The press 9 is rotatably provided with an upper mold 21 below a slide 19 that is vertically movable. This upper mold 21
A worm wheel 23 is provided on the outer periphery of the worm wheel 23, and a worm gear 25 screwed into the worm wheel 23 is rotated by a servo motor controlled by a numerical control device 17, and rotates together with the lower die (not shown). Then, for example, as shown in FIG. 6C, a triangle and an inverted triangle can be punched out using the same pair of upper and lower dies.

In the first embodiment, the moving and positioning device 13 for the plate material 1 described above has guide rails 29, 29 extending parallel to the X-axis direction on the machine base 27, and is guided in the X-axis direction while straddling the guide rails. A carriage base 31 and a carriage 33 that can be moved and positioned in the Y-axis direction guided by a guide provided on the carriage base 31 are provided.

Further, the carriage 33 includes a gripping claw device 35,
35 is provided to grip the plate material 1 and move it over the fixed table 37 and the lower die 39 of the press 9 for positioning.

The detection device 15 is provided above the fixed table 37 on the right side of the press 9.

The automatic press device 7 shown in FIGS. 3 and 4 is
A carriage base 31 is provided which can be moved and positioned in the Y-axis direction while being guided by guide rails 29 provided near both ends of the machine base 27 of the press 9 in the X-axis direction.

The carriage base 31 has a guide rail 2.
A carriage 33 that is guided by 9' and 29' and can be moved and positioned in the X-axis direction, and a gripping claw device 35 provided on the carriage 33 are configured to grip the plate 1 and can be moved and positioned in the X-axis direction.

The automatic press device 7 shown in FIGS. 3 and 4 is
As is clear from Fig. 4, only the central table is a fixed table 37, and the carriage bases 31 are on both sides.
A movable table 4 that can be moved in the Y-axis direction integrally with the
1 is provided.

As is clear from FIG. 3, the above-mentioned detection device 15 is provided to cover the movable table 41 from the left end of the machine base 27, and the device shown in FIGS. The apparatus shown in the figure also has a turntable 43 as shown in FIG. 5 on a table below the detection device 15 described above.

In the automatic press apparatus 7 shown in FIG. 1, the turntable 43 has a bearing 4 mounted on a cylindrical body 45 provided on the machine base 27, as shown in FIG.
A vertically immovable piston 51 is provided at the upper end of a vertical shaft 49 that is supported by a shaft 49 and is freely rotatable.
A hydraulic connector 55 is connected to a cylinder 53 surrounding 1.
It is equipped with 57 ammunition.

The bottom cover 59 of the cylinder 53 is a flange-shaped gear 61, which engages with a pinion gear 65 provided on the output shaft of an electric motor 63, such as a pulse motor, mounted on the machine base 27.

Further, fluid pressure is introduced above the cylinder 53 via another fluid pressure connector 67, and the piston 6 is driven by this fluid pressure connector 67.
A vacuum pad 71 is provided at the upper end of 9 so as to face upward.

The vacuum pad 71 occupies a position lower than the upper surface of the upper cover 73 of the turntable 43 when not in use,
It is raised to a position slightly higher than the upper lid 73 as necessary.

The vacuum pad 71 is configured to be switched between a negative pressure source and the atmosphere via a flexible hose 75 provided at the base.

The above-mentioned detection device 15 includes a turntable 43
X-axis reference point detection sensors 77, 77 that are aligned in the X-axis direction with the center of the
, a fixed pitch mark detection sensor 79 arranged in alignment on the X-axis direction line passing through the processing center 11 of the press 9, and a movable pitch mark detection sensor 81 whose position can be freely adjusted in the X-axis direction (alignment direction).
It is equipped with

Each of the above-mentioned sensors 77, 79, 81 is, for example,
It consists of a CCD area sensor, etc.
When a mark previously marked on the plate material 1 is located within the field of view, the position of the mark in the X and Y axis directions can be read.

Next, the operation of the above configuration will be explained.

(A) When correcting the inclination of the center line XX of the plate 1 with respect to the X-axis or Y-axis by rotating the turntable 43 (1) First, the width dimensions of the plate 1 in the X and Y directions; the center of the plate 1 Center marks are pre-marked near both ends in the X-axis direction to indicate the line (X-
(shown in black on the X-ray); dimensions in the X and Y directions from one center mark to the pitch mark 5 corresponding to the product 3 to be processed first; pitch in the alignment direction (X-axis direction) of the pitch marks 5; The interval dimension of the pitch marks 5 in the Y direction; and other necessary data are input into the numerical control device 17 in advance.

(2) Next, centering on the turntable 43,
The distance between the axis reference point detection sensors 77 is positioned to match the distance between the center marks. Further, the position of the sensor 81 is adjusted so that the distance between the pitch mark detection sensors 79 and 81 matches the pitch of the pitch mark 5.

(3) Place the center mark of the plate 1 in the field of view of both X-axis reference point detection sensors 77,
A plate 1 is supplied onto a table by a robot or other plate supply device.

(4) The turntable 43 is raised, and the plate material 1 is sucked by the vacuum pad 71 to be fixed on the turntable 43.

(5) The X-axis reference point detection sensors 77 on both sides detect the positions of the center marks on both sides in the X and Y-axis directions.

(6) Based on the detected actual measurement data, calculate the inclination angle (θ) of the center line XX of the board 1 with respect to the X axis.

(7) Based on the calculation result, rotate the turntable 43 by the necessary angle to correct the center line XX of the plate material 1 so that it becomes parallel to the X axis.

(8) The carriage 33 is moved in the X-axis or Y-axis direction to the plate material clamping position, and the edge of the plate material 1 is gripped by the gripping claw device 35.

(9) Release the vacuum pad 71 and lower the turntable 43.

(10) When the positions of the center marks on both sides of the plate material 1 are measured again using the sensor 77 for detecting the X-axis reference point, and the center of one sensor 77 is used as a reference, the position error of one center mark in the X and Y directions is determined. is input to the numerical control device 17 as a correction value.

(11) Move the plate 1 so that the first pitch mark 5 corresponding to the product 3 to be processed first is aligned with the position of the detection sensor 79 serving as one of the references (see FIG. 7). At this time,
Since the dimensions between the sensors 77 and 79 are known, the dimension data from one of the markers to the first pitch mark 5, which has been input in advance, is moved while taking into account the error correction value.

(12) The position error of the first pitch mark 5 with respect to the center of the detection sensor 79 is detected by the pitch mark detection sensor 79, and the position of the adjacent second pitch mark 5 is detected by the other pitch mark detection sensor 81. , based on the detected values of the sensors 79 and 81, the numerical controller 17 calculates the pitch of the pitch mark 5 in the X-axis direction and the amount of displacement in the Y-axis direction. The plate material 1 is moved in the X-axis direction, and the pitch and Y-axis displacement of each pitch mark 5 for one row are calculated and stored in the storage section of the numerical control device 17.

(13) Based on the position data of each pitch mark 5 stored in the storage section of the numerical control device 17, the plate material 1 is moved to the press processing center 11 by a movement amount (actual feed pitch) including the error of the pitch mark 5 and processed. Do the following.

(B) In the case of correction by rotating the upper and lower molds (1) In the case of (A) above, perform (1) to (3) and (5) except for (4) in (1) to (5).

(2) Based on the detected data, calculate the inclination angle (θ) of the center line XX of the plate material 1 with respect to the It is stored in the storage section of the device 17.

(3) Correct the angle by rotating the upper and lower molds 21, 39 by the calculated inclination angle (θ).

(4) Perform (11) and (12) in (A) above.

(5) Considering the inclination angle (θ) of plate 1, set the X-axis and Y-axis.
The initial processing position of the plate material 1 is moved to the press processing center 11 position in the upper and lower dies 21, 39 using the actual feed amount in the axial direction, and processing is performed.

(C) When using the rotation correction of the inclination angle (θ) using a turntable and the vertical rotation correction (1) In addition to performing (1) to (12) in (A) above,
The inclination angle (θ') of the row of pitch marks 5 with respect to the axis is calculated and stored in the numerical control device 17.

(2) The upper and lower dies 21, 39 are rotated by the inclination angle (θ') of the row of pitch marks 5, and the plate material 1 is moved to the press center 11 at an actual feed amount that takes into account the error in pitch feed amount to perform processing.

As can be understood from the above description, according to the present invention, the plate material 1 does not require a pilot hole, and the problem caused by inserting the pilot pin into the pilot hole is solved.

In particular, in the present invention, fixed pitch mark detection sensors 79 for detecting a plurality of pitch marks 5 previously marked on the plate material 1 are arranged in the X-axis direction or the Y-axis direction corresponding to the mold, and are movable. The pitch mark detection sensor 81 is provided so as to be positionally adjustable in the alignment direction.

With the above configuration, the fixed pitch mark detection sensor 79 and the movable pitch mark detection sensor 81
The distance between the two can be adjusted according to the pitch of pitch marks 5 marked in advance on the plate material 1. Therefore, before the moving positioning device 13 moves the plate material 1 in one direction in the X-axis or Y-axis direction and positions the pitch mark 5 at the position of the mold, both the sensors 79 and 81 detect the adjacent position. By simultaneously detecting the positions of the pitch marks 5, it is possible to detect pitch errors between adjacent pitch marks 5 and displacement errors in the movement direction (one direction).

Therefore, when processing the plate material 1 using a mold, the pitch error and displacement error can be corrected to accurately position the plate material.

In addition, if the row of pitch marks 5 is not parallel to the center line XX of the plate material 1 but is slightly inclined, the row of pitch marks 5 may be By rotating the mold in accordance with the inclination angle, the product 3 can be punched out accurately from the plate material 1.

[Brief explanation of drawings]

Fig. 1 is a perspective view showing the first embodiment, Fig. 2 is a plan view of the above, Fig. 3 is a front view of another embodiment of the present invention, Fig. 4 is a plan view of the above, and Fig. 5 is a turntable. FIG. 6 is an explanatory diagram of the processing, and FIG. 7 is an explanatory diagram of the deviation of the pitch mark from the field of view and the out-of-field of view based on the initial data. (Explanation of symbols representing main parts of the drawing), 3
...Small piece (product), 5...Pitch mark, 11...
... Press center, 15 ... Detection device, 17 ... Numerical control device, 77 ... X-axis reference point detection sensor,
79...Fixed sensor for pitch mark detection, 81
...Movable sensor for pitch mark detection.

Claims (1)

[Scope of Claims] 1. A slide 19 provided on the press 9 so as to be movable up and down, upper and lower molds that press the plate material 1 by being operated by the slide 19, and a table that supports the plate material 1. In order to position the plate material 1 with respect to the mold, the plate material 1 is placed on the table.
and a moving positioning device 13 that can move and position freely in the two axis directions of X and Y, and detect the center mark pre-marked on the plate material 1 placed on the table. An inclination detection sensor 77 detects the inclination angle of the center line XX of the plate 1 with respect to the X-axis or the Y-axis, and
and a turntable 43 for holding and rotating a plurality of pitch marks 5, which are pre-marked on the plate material 1 corresponding to a plurality of processing positions on the plate material 1, in the X-axis direction or the Y-axis direction corresponding to the mold. a fixed pitch mark detection sensor 79 that detects at positions aligned in the axial direction; a movable pitch mark detection sensor 81 whose position can be adjusted in the aligned direction with respect to the fixed pitch mark detection sensor 79; and each of the sensors. Based on the detection of 77, 79, 81, the moving positioning device 13 and the turntable 4
An automatic press processing device comprising: a numerical control device 17 for controlling the operation of step 3; 2. A slide 19 provided on the press 9 so as to be movable up and down, upper and lower molds that press the plate material 1 by being operated by the slide 19, a table that supports the plate material 1, and a To position the plate 1, place the plate 1 on the table.
and a moving positioning device 13 that can move and position freely in the two axis directions of X and Y, and detect the center mark pre-marked on the plate material 1 placed on the table. An inclination detection sensor 77 detects the inclination angle of the center line XX of the plate 1 with respect to the X-axis or the Y-axis, and
and a turntable 43 for holding and rotating a plurality of pitch marks 5, which are pre-marked on the plate material 1 corresponding to a plurality of processing positions on the plate material 1, in the X-axis direction or the Y-axis direction corresponding to the mold. a fixed pitch mark detection sensor 79 that detects at positions aligned in the axial direction; a movable pitch mark detection sensor 81 whose position can be adjusted in the aligned direction with respect to the fixed pitch mark detection sensor 79; Center line of plate 1 relative to Y-axis
The mold is provided so as to be able to freely adjust its rotational angle in accordance with the inclination of the pitch marks 5 or the pitch marks 5, and the movement of the movable positioning device 13 and the turntable based on the detection by the sensors 77, 79, 81. 43 and a numerical control device 17 for controlling the rotation angle of the mold.