JPH04360793A - Punching device - Google Patents

Abstract

PURPOSE:To make a punching unit compact and make the movement into a punching position rapid so as to improve machining efficiency. CONSTITUTION:A pair of punching units a, a' having flat U-shape workpiece transfer spaces are disposed opposedly on a machine base, and each unit is provided with feed mechanism 14 for moving the unit in the orthogonal direction to a workpiece transfer path. The punch body frame of each unit is disposed movably by slight distance in the X and Y directions, and punches opposed to a die is fitted in the vertically movable state to the upper and lower parts of the punch body frame. A workpiece punch mark centering sensor is provided being spaced by the fixed distance from the punch, and a driving means for transferring the workpieces quantitatively is disposed in the workpiece transfer path. A detecting means 5 for reading the punch pattern of the workpiece is provided above the upstream side of the unit, and the feed mechanism of the unit and the workpiece driving means are controlled on the basis of the detection data of the detecting means 5.

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 holes in sheet materials or plate materials such as circuit board materials using a punch unit.

0002

[Prior art and its technical problems] The applicant of the present application has proposed an improvement plan regarding this type of drilling device (Japanese Patent Application Laid-Open No. 2-1805
Publication No. 83). The conventional device has a plurality of perforation units arranged on two opposite sides of the machine base, the positions of which can be adjusted freely in the X and Y directions, respectively, and each unit has a notch-like hole at the same height of a vertical flat case. A work space is formed and the space is oriented toward the center of the workpiece transfer path so that the workpiece can pass through the workpiece. Each unit has a die attached to the tip of the bottom wall that separates the workspace, and A punch facing the die is attached to the upper wall that separates the space so as to be movable up and down, and an optical sensor or camera for centering the perforation mark is attached to the tip of the upper wall at a predetermined distance from the punch, and the punch is mounted outside the case. The present invention relates to a punching device equipped with a drive mechanism for moving a punching unit in the X direction and the Y direction.

SUMMARY OF THE INVENTION An object of the present invention is to further improve the conventional apparatus described above, reduce the size of the apparatus by minimizing the number of drilling units necessary, and improve processing efficiency by speeding movement to the drilling position.

0004

[Means for Solving the Problems] The punching device of the present invention includes a pair of punching units having flat U-shaped work transfer spaces arranged oppositely on a machine base, and including the work transfer spaces. A feeding mechanism is provided to form a workpiece transfer path and move each of the units in a direction orthogonal to the workpiece transfer path, and each unit is arranged to be movable over a short distance in the X and Y directions. A die is attached to a bottom wall that separates the transfer space, and a punch facing the die is attached to an upper wall that separates the transfer space so as to be vertically movable;
A sensor for centering the perforation mark is provided at a constant interval from the punch, a workpiece driving means for transferring a fixed amount of the workpiece is provided in the workpiece transfer path, and a workpiece is provided between the units on the upper upstream side of the unit. The present invention is characterized in that a detecting means is provided for reading and detecting the perforation pattern of the workpiece, and the feeding mechanism of the unit and the workpiece driving means are controlled based on the detection data of the detecting means.

[0005]

According to the present invention, the detection means detects the surface of the workpiece supplied to the perforation unit, reads the perforation pattern of the workpiece, more specifically, the array coordinates of perforation marks, etc., and based on the detected data, Activating the workpiece drive means to perform intermittent transfer of stopping the workpiece every row with the perforation mark, and activating the feeding mechanism to move each unit in the X direction (direction perpendicular to the workpiece transfer direction). The centering sensor performs an intermittent feeding operation that stops at each perforation mark position, and at each stop, the center of the perforation mark is detected by the operation of the sensor, and after moving the punch to the center position, the punch and die are moved. Performs perforation processing on the workpiece.

[0006]

[Embodiment] An embodiment of the present invention will be described with reference to the drawings. In FIGS. 1 and 2, reference numeral 1 denotes a machine base, and drilling units a and a' are arranged at intervals on each of the opposing left and right sides of the machine base 1. At the same time, work transfer rollers 2, 2 constituting drive means for the work w are provided before and after the units a, a', and a work transfer path 3 is provided between the units a, a'. Form. Furthermore, a gate-shaped support 4 is installed on the machine stand 1 on the upstream side of the transfer path 3 to straddle the transfer path 3, and a pattern detection means 5 such as a CCD camera capable of capturing images downward is arranged at the upper center of the gate-shaped support 4. .

The work transfer rollers 2, 2 are each composed of two upper and lower rollers 2a, 2b, and one of the rollers 2a is connected to a drive source M1 such as a servo motor to enable intermittent transfer of the work w. It is optional that the drive source M1 is one, and in that case, the drive source and the two rollers 2a, 2a are linked via a chain or the like.

[0008] The work w is a material for a circuit board, etc.
Drilling marks (
(not shown because it is common) is applied in a predetermined arrangement pattern, and is supplied to the transfer path 3 in the form of paper or sheet. In the drawings of the embodiment, a sheet-like work w is shown, and each sheet of the work w is supplied to the transfer path 3 by the operation of a loader mechanism 6 installed near the machine stand 1.

The transfer path 3 includes a table 7 having a height flush with the upper surface of the lower roller 2a of the transfer roller 2.
, the transfer rollers 2, 2 and perforating units a, a'
The work w is laid so as not to interfere with the operation of the table 7, and the work w is supplied by the loader mechanism 6 to the work loading side of the table 7, and the supplied work w is detected by the detection means 5.
After being imaged and detected by the guide means or the like, it is sent to the transfer roller 2 on the upstream side.

Since the perforating units a and a' have the same structure except that they are arranged symmetrically with respect to the transfer path 3, one unit a' will be explained with reference to FIGS. The explanation will be omitted.

The unit a' has a main body frame 11 installed inside a flat rectangular case 10, and the case 10 is attached to the machine base 1.
It is movably disposed on a guide rail 12 disposed in the area, and is slidable along the guide rail 12 in a direction orthogonal to the transfer direction of the transfer path 3. The case 10 has a feed mechanism 14 connected to its outer end, which is composed of a servo motor M2 and a screw shaft 13, and the feed mechanism 14 allows the unit a
' moves on the guide rail 12. Feeding mechanism 14
The servo motor M2 is started and stopped by a predetermined signal, thereby intermittently moving the unit a'.

The main body frame 11 is a substantially U-shaped frame having a flat U-shaped work transfer space 11a, and the case 1
0 in the X direction (direction perpendicular to the workpiece transfer direction) and Y direction (the same direction as the workpiece transfer direction), and in FIG. 16 is a Y drive section including a servo motor or pulse motor M4 that controls movement of the main 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 workpiece transfer space 11a, and allows the workpiece w to pass through the workpiece transfer space 11a through the opening 10a.In other words, the unit a' can be moved in the X direction across the transfer path 3. Since the unit a' is composed of a pair of left and right units (a, a'), the amount of movement of the unit a' in the X direction may be approximately half the width of the transfer path for each unit.

The body frame 1 has a die 18 mounted on a bottom wall 17 located below the work transfer space 11a, and a punch 20 facing the die 18 mounted on an upper wall 19 located above the transfer space 11a. Install freely. The punch 20 is an operating rod 22 that is swung by an air cylinder 21.
An example of a structure in which it is connected to and can move vertically is shown as an example, but the structure is not limited to this.

The body frame 1 also has a centering sensor 2 at the tip of the upper wall 19 at a constant distance from the punch 20.
3 is attached, and a light source (LED) 24 facing the sensor 23 is attached to the tip of the bottom wall 17. ,
The sensor 23 detects the center of the perforation mark on the workpiece w, and in the embodiment, a case where a CCD camera is used is illustrated, and the perforation mark is imaged by the sensor 23, and the center coordinates of the mark are determined by image processing. Let it be detected. After the center coordinates of the mark are detected by the sensor 23, the punch 20 is moved by the operation of the X drive section 15 and the Y drive section 16.
is moved to the center coordinate position (drilling position), and the air cylinder 21 is operated to lower the punch 20 and remove the workpiece w.
perforation.

The detection means 5 is composed of a CCD camera that images the entire surface of the workpiece w supplied on the table 7, and a part that processes the image.The image processing part detects the arrangement of perforation marks on the surface of the workpiece w. The coordinates are read and transmitted to the control section 25.

The control unit 25 is installed in the case 10 of each unit a, a', and includes a central processing unit (CPU), memory (RAM, ROM), etc., and stores and stores the arrangement coordinates of the perforation marks. The array coordinates (data) are read out in a predetermined order and output to the drive sources M1, M1 of the work transfer rollers 2, 2 and the servo motor M2 of the feed mechanism 14, and the work transfer by the transfer rollers 2, 2 and the feed mechanism 14 are performed. controls the X-direction feed of each unit a, a'. That is, the workpiece transfer by the transfer rollers 2, 2 controls the Y coordinate of the arrangement coordinates of the perforation marks,
The feeding operation of each unit a, a' by the feeding mechanism 14 controls the X coordinate of the array coordinates. Further, it is determined whether the data corresponds to the left or right side of the center coordinates of the workpiece w in the width direction, and it is determined which unit a or a' the data belongs to.

In the punching device having the above-mentioned configuration, when a workpiece w is supplied to the transfer path 3 on the machine table 1, first, the detection means 5 detects and stores the coordinates of the punching mark arrangement of the workpiece w, and then the guide means moves the workpiece w. When the workpiece w is sent to the upstream transfer roller 2, the workpiece w and the units a and a' are operated based on the control operation of the control section 25 from this position as a starting point. When the first perforation mark reaches a predetermined position between units a and a', more specifically, a position on the line connecting the sensors 23 and 23 of units a and a', the workpiece transfer by the transfer roller 2 is stopped and the feed mechanism 14 is driven. unit a, a'
is moved by a predetermined amount and then stopped. At this position, the sensors 23 and 23 of units a and a' are located near the perforation mark, so the sensor 23 detects the center coordinates of the mark as described above, and The punch 20 is moved to the center coordinate position (
The punch 20 is moved to the perforation position), and the air cylinder 21 is operated to lower the punch 20 to perform perforation.

The above-mentioned perforation marks are not necessarily arranged symmetrically or in the same number in a row, but each unit a, a' performs the perforation work individually, and when the work of both units a, a' is completed, the transfer roller After the workpiece transfer according to No. 2 is started and the workpiece w is transferred to the Y coordinate position based on the next data, the units a and a' perform the drilling operation in the same manner as described above, and the same operation is repeated thereafter.

Note that after the tip of the work w reaches the downstream transfer roller 2, the roller 2 also moves to the upstream roller 2.
Finally, the workpiece w is sent out to the discharge side of the transfer path 3 using only the downstream rollers 2, and at this position, the workpiece w is sent out to a predetermined position manually or automatically by an unloader mechanism or the like.

[0021]

[Effect] According to the present invention, there are two punching units on the left and right sides.
Since a predetermined drilling operation can be carried out with just one punch, the number of drilling units is kept to a minimum and the size of the device can be reduced compared to conventional devices.

[0022] Furthermore, since a detection means for reading and detecting the perforation pattern of the workpiece supplied between the perforation units is provided, and the feeding mechanism of the unit and the workpiece drive means are controlled based on the detection data of the detection means, the unit The feed and workpiece drive operations are quickly set for each workpiece,
There is no need to perform teaching work on mark arrangement coordinates every time the type of workpiece changes, and each unit can be quickly moved to the drilling position, improving machining efficiency.

[Brief explanation of drawings]

[Fig. 1] Front view of the punching device of the present invention

[Figure 2] Plan view of Figure 1

[Figure 3] Enlarged cross-sectional front view of the drilling unit

[Figure 4] Cross-sectional view taken along line 4-4 in Figure 3

[Explanation of symbols]

1... Machine stand
2... Work transfer roller 3... Work transfer path a,
a'...Drilling unit 5...Detection means
14...Feeding mechanism 18...Dice
20……Punch 23
...centering sensor

Claims (1)

[Claims] 1. A pair of perforating units each having a flat U-shaped workpiece transfer space are disposed facing each other on a machine stand, a workpiece transfer path including the workpiece transfer space is formed, and each unit is connected to the workpiece transfer space. A feeding mechanism for moving in a direction perpendicular to the transfer path is provided, each unit is movable over a short distance in the X direction and the Y direction, and a die is attached to a bottom wall that separates the workpiece transfer space. A punch facing the die is attached to the upper wall that separates the space so as to be movable up and down, and a sensor for centering the perforation mark is provided at a constant distance from the punch, and the workpiece is transferred in a fixed amount to the workpiece transfer path. A detection means is provided above the upstream side of the unit to read and detect the perforation pattern of the workpiece supplied between the units, and the feeding mechanism of the unit is installed based on the detection data of the detection means. and a punching device that controls the drive means for the workpiece.