JPH06104316B2 - Punching device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a punching device, and more particularly to a device for punching a sheet material or a plate material such as a material for a circuit board using a punch unit.

[0002]

2. Description of the Related Art The applicant of the present application has proposed an improvement plan for this type of punching device (Japanese Patent Laid-Open No. 2-180583). In the conventional device, a plurality of punching units are arranged on the opposite two sides of the machine base so that the positions thereof can be adjusted in the X direction and the Y direction, respectively, and each unit has a notch shape at the same height position of a vertical flat case. A work space is formed and the space is arranged toward the center of the work transfer path to allow the work to pass through. Each unit has a die attached to the tip of the bottom wall separating the work space. A punch facing the die is vertically movably attached to an upper wall that separates a space, and an optical sensor or a camera for centering a punch mark is attached to a tip of the upper wall at a predetermined distance from the upper wall, and the outside of the case is attached. Relates to a punching device having a driving mechanism for moving the punching unit in the X and Y directions.

It is an object of the present invention to further improve the above-mentioned conventional device to minimize the size of the drilling unit by reducing the drilling unit to the necessary minimum and to speed up the movement to the drilling position to improve the working efficiency.

[0004]

In the punching device of the present invention, a pair of punching units having a flat U-shaped work transfer space are arranged on a machine base so as to face each other, and the work transfer space is included. A work transfer path is formed and a feed mechanism for moving each unit in a direction orthogonal to the work transfer path is provided. Each unit is movably arranged in a small distance in the X direction and the Y direction, and the work transfer space is provided. A die is attached to a bottom wall that separates the punch, and a punch facing the die is attached to the upper wall that separates the transfer space so as to be vertically movable, and a sensor for centering a punch mark at a constant interval from the punch. And a work driving means for quantitatively transferring the work is provided in the work transfer path, and a perforation pattern of the work supplied between the units is read and detected above the upstream side of the unit. The detecting means is provided, characterized in that so as to control the feed mechanism and the workpiece drive means of said unit on the basis of the detection data of the detection means.

[0005]

According to the present invention, the surface of the work supplied to the perforation unit is detected by the detection means, the perforation pattern of the work, more specifically, the arrangement coordinates of the perforation marks and the like are read, and based on the detection data, Intermittent transfer is performed by operating the drive means of the work to stop the work for each row having the perforation marks, and operating the feed mechanism to move each unit in the X direction (direction orthogonal to the work transfer direction). The centering sensor is made to perform an intermittent feed operation in which it stops at each punch mark position, the center of the punch mark is detected by the operation of the sensor at each stop, and the punch is moved to the center position, and then the punch and the die. The work is perforated by.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the drawings, an embodiment of the present invention will be described. In FIG. 1 and FIG. And the work transfer rollers 2 and 2 which constitute the driving means for the work w are arranged in front of and behind the units a and a ′, and the work transfer path 3 is provided between the units a and a ′. Form. Further, on the machine base 1, a gate-shaped support column 4 is provided on the upstream side of the transfer channel 3 so as to straddle the transfer channel 3, and a pattern detecting means 5 such as a CCD camera capable of imaging downward is provided in the upper center portion thereof.
To arrange.

The work transfer rollers 2 and 2 are composed of upper and lower two rollers 2a and 2b, respectively, and one of the rollers 2a is linked to a drive source M1 such as a servomotor to enable intermittent transfer of the work w. The number of the drive source M1 may be one, and in that case, the drive source and the two rollers 2a, 2a are linked via a chain or the like.

The work w is a material for a circuit board,
A perforation mark (not shown because it is general) indicating the perforation position such as a reference hole or a through hole is provided in a predetermined arrangement pattern, and is supplied to the transfer path 3 in the form of sheet or sheet. It In the drawings of the embodiment, a sheet-like work w is shown, and the loader mechanism 6 installed near the machine base 1 is shown.
The work w of each sheet is supplied to the transfer path 3 by the operation of.

In the transfer path 3, a table 7 having a height flush with the upper surface of the lower roller 2a of the transfer roller 2 is provided.
The transfer rollers 2 and 2 and the punching units a and a ′.
Is installed so as not to interfere with the operation of the work, and the work w is supplied to the work carry-in side of the table 7 by the loader mechanism 6, and the supplied work w is the detection means 5
After being imaged and detected by, the sheet is sent to the upstream transfer roller 2 by a guide means or the like.

The perforating units a and a ′ have the same structure except that they are symmetrically arranged about the transfer path 3, so that one unit a ′ will be described with reference to FIGS. The description is omitted.

The unit a'has a main body frame 11 installed in a flat rectangular case 10, and the case 10 is movably arranged on a guide rail 12 arranged on the machine base 1, and the guide rail 12 is provided. Is slidable in the direction orthogonal to the transfer direction of the transfer path 3. The case 10 has a feed mechanism 14 composed of a servomotor M2 and a screw shaft 13 connected to the outer end thereof, and the feed mechanism 14 moves the unit a'on the guide rail 12. The feed mechanism 14 starts and stops the servomotor M2 in response to a predetermined signal, thereby intermittently moving the unit a '.

The main body frame 11 is a flat work-shaped work transfer space 11
a substantially U-shaped frame having a, and movably arranged in the case 10 in a small distance in the X direction (direction orthogonal to the work transfer direction) and the Y direction (direction same as the work transfer direction), In FIG. 3, reference numeral 15 is an X including a servo motor or a pulse motor M3 for controlling the movement of the body frame 11 in the X direction.
The drive unit 16 is a Y drive unit including a servomotor or a pulse motor M4 for controlling the movement of the body frame 11 in the Y direction.

The case 10 has an opening 10a formed in a portion of the main body frame 11 facing the work transfer space 11a so that the work w can pass through the work transfer space 11a through the opening 10a. The a ′ can move in the X direction across the transfer path 3. X of the unit a '
Since the unit is composed of a pair of left and right units (a, a '), the amount of movement in the direction may be approximately half the width of the transfer path for each unit.

In the main body frame 1, a die 18 is attached to a bottom wall 17 located below the work transfer space 11a, and the transfer space 11 is provided.
A punch 20 facing the die 18 is vertically movably attached to an upper wall 19 located above a. The punch 20 exemplifies a structure in which it can be moved up and down by being connected to an operating rod 22 which is rocked by an air cylinder 21, but is not limited to this.

Further, the main body frame 1 has a centering sensor 23 attached to the tip of the upper wall 19 at a fixed interval from the punch 20, and a light source facing the sensor 23 at the tip of the bottom wall 17. Install (LED) 24. , The sensor 23 detects the center of the perforation mark on the work w,
In the embodiment, a case of using a CCD camera is illustrated, and the perforation mark is imaged by the sensor 23, and the center coordinate of the mark is detected by image processing of the image. After the sensor 23 detects the center coordinates of the mark, the X drive unit 15 and the Y drive unit 16 are operated to move the punch 20 to the position of the center coordinates (piercing position), and the air cylinder 21 is operated to perform punching. 20 is lowered and the work w is perforated.

The detecting means 5 is composed of a CCD camera for imaging the entire surface of the work w supplied on the table 7 and a portion for image-processing the same. The image-processing portion is an array of perforation marks on the surface of the work w. The coordinates are read and transmitted to the control unit 25.

The control unit 25 is a case 10 for each unit a, a '.
Equipped inside, central processing unit (CPU), memory (R
(AM, ROM) and the like to store the array coordinates of the perforation marks and to read the stored array coordinates (data) in a predetermined order of the drive sources M1 and M1 of the work transfer rollers 2 and 2 and the feed mechanism 14. Output to the servomotor M2 to control the work transfer by the transfer rollers 2 and 2 and the X direction feed of each unit a, a'by the feed mechanism 14. That is, the work transfer by the transfer rollers 2 and 2 controls the Y coordinate of the arrangement coordinates of the perforation marks, and the feeding operation of each unit a, a'by the feeding mechanism 14 is the X coordinate of the arrangement coordinates.
Control the coordinates. Further, the data determines whether the corresponding mark is on the left or right of the center coordinate in the width direction of the work w, and determines which of the units a and a ′ is the data.

In the punching device having the above-described structure, when the work w is supplied to the transfer path 3 on the machine base 1, the detecting means 5 first detects and stores the punching mark array coordinates of the work w, and then the work means w by the guide means. When is transferred to the upstream transfer roller 2, the work w and the units a and a ′ are subsequently operated based on the position of the transfer roller 2 based on the control operation of the controller 25. When the first perforation mark reaches a predetermined position between the units a and a ', specifically, a position on the line connecting the sensors 23 and 23 of the units a and a', the work transfer by the transfer roller 2 is stopped and the feeding mechanism 14 is driven. After that, the units a and a'are moved by a predetermined amount and then stopped, and at that position, the sensors 23 and 23 of the units a and a'are located near the perforation mark. The center coordinates are detected, the punch 20 is moved to the position of the center coordinates (perforation position) by the operation of the X drive section 15 and the Y drive section 16, and the air cylinder 21 is operated to lower the punch 20 to perform perforation. .

The above-mentioned perforation marks are not necessarily arranged in a row symmetrically and in the same number, but each unit a, a'perforates an individual work, and when the work of both units a, a'is completed, the transfer roller is again moved. After the work transfer by 2 is started and the work w is transferred to the Y coordinate position based on the next data, the units a and a'perforate the drilling work in the same manner as described above, and the same operation is repeated thereafter.

After the tip of the work w reaches the downstream transfer roller 2, the roller 2 is also upstream roller 2.
Finally, the work w is sent to the carry-out side of the transfer path 3 only by the downstream roller 2, and the work w is automatically sent to a predetermined position at this position by a manual operation or an unloader mechanism.

[0021]

[Effects] According to the present invention, the punching unit has a pair of left and right
Since a predetermined punching operation can be performed individually, the punching unit can be reduced to the required minimum as compared with the conventional apparatus, and the apparatus can be downsized.

Further, detection means for reading and detecting the punching pattern of the work supplied between the punching units is provided, and the feeding mechanism of the unit and the driving means of the work are controlled based on the detection data of the detection means. Feed and work drive operation are set quickly for each work,
It is not necessary to perform the teaching work of the mark array coordinates each time the type of work changes, and moreover, the movement of each unit to the drilling position is quick and the machining efficiency can be improved.

[Brief description of drawings]

FIG. 1 is a front view of a punching device of the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is an enlarged cross-sectional front view of the punching unit.

FIG. 4 is a sectional view taken along line 4-4 of FIG.

[Explanation of symbols]

1 ... Machine stand 2 ... Work transfer roller 3 ... Work transfer path a, a '... Drilling unit 5 ... Detection means 14 ... Feed mechanism 18 ... Die 20 ... Punch 23 ... Centering sensor

Claims (1)

[Claims] 1. A pair of perforation units having a flat U-shaped work transfer space are arranged on a machine base so as to face each other, a work transfer path including the work transfer space is formed, and each unit is connected to the work. A feed mechanism for moving in the direction orthogonal to the transfer path is provided, each unit is movably arranged in the X and Y directions for a short distance, and a die is attached to the bottom wall separating the work transfer space, and the transfer is performed. A punch facing the die is vertically movably mounted on the upper wall separating the space, and a sensor for centering a punching mark is provided at a constant interval from the punch, and the work is quantitatively transferred to the work transfer path. The work driving means is provided, and the detection means for reading and detecting the perforation pattern of the work supplied between the units is provided above the unit, and the detection data of the detection means is provided. Zui perforation so as to control the driving means of the feed mechanism and the work of the unit device.