JPH0547359B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a multi-axis punching device, and more particularly to a device for punching holes in sheet materials or plate materials such as circuit board materials using a plurality of punches.

<Archived techniques and their technical challenges> In general, manufacturing circuit boards requires a large number of drilling operations, including reference holes.

In conventional punching devices, the punch is fixed in a fixed position (position adjustment is possible), and the punch is
A method is used to center the machine by moving it.

In other words, in the drilling operation using a conventional punching device, for example, as in the one disclosed in Japanese Patent Application Laid-open No. 60-263604, the punching mark marked on the workpiece is positioned near the punch, and then the punching mark is imaged with a camera and image processed. After that, the center of the punch mark is centered, and after that, the punch center is moved to align with the center axis of the punch, and then punching is started. However, in conventional punching devices, the above operation is required for each punch even when the punches are multi-axis.

However, in the conventional device, the workpiece is clamped on the workpiece during centering operation of the drilling work, and the workpiece is clamped in the X direction,
This requires an operation to move it in the Y direction and align it on the center axis of the punch. For this reason, conventionally, only cut sheets can be perforated, and it has been impossible to incorporate a perforation device into a production line that handles continuous sheets.

An object of the present invention is to provide a multi-axis drilling device that can be incorporated into a production line in which workpieces are continuous by eliminating the movement of the workpiece that was performed during centering of the punching mark and drilling operation. purpose.

<Means for Solving the Problems> The multi-axis drilling device of the present invention has a plurality of drilling units disposed on two opposite sides of the machine base in the X direction and the Y direction, respectively, along the top surface of the machine base. Each unit is supported so that its position can be adjusted, and each unit forms a notch-like working space at the same height of the vertical flat case, and the space is oriented toward the center of the workpiece transfer path so that the workpiece can pass through the case. and each unit has a die attached to the tip of the bottom wall that separates the working space,
A punch facing the die is attached to the upper wall that separates the work space so as to be movable up and down, an optical sensor 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 apparatus is characterized in that it is equipped with a drive mechanism for moving the perforation unit in the X direction and the Y direction.

<Operation> According to the above means, the plurality of punching units arranged on two opposite sides of the base are moved in the X direction and the Y direction respectively by the drive of the drive mechanism, and their positions are adjusted on the workpiece. Ru.

On the other hand, each perforating unit is equipped with an optical sensor for centering the perforation mark, and this optical sensor detects the perforation mark made on the workpiece directly below, so that the punch of the perforation unit and the perforation position on the workpiece are aligned. The holes are punched together with the impact of the punch.

<Example> To explain an example of the present invention with reference to the drawings, the first example is as follows.
- In Fig. 3, 1 is a machine installed in the middle of a transfer path along which the workpiece w is transferred in the direction of the arrow in Fig. Perforation units a, a on each side respectively
…, a′, a′… are installed and arranged.

Each unit a, a' is a vertical flat case 10,
Working spaces 11, 11' are formed in the upper part of the case 10' in the shape of a U-shaped notch, and the cases 10, 10' are installed on the drive mechanism 19, and the units a, 11' on each left and right side are
a' is arranged with the cut opening ends of its working spaces 11, 11' facing the other side of the unit, that is, the workpiece w moves in a penetrating manner across the working spaces 11, 11' of both units a, a'. It is arranged like this.

Moreover, each unit a, a' is mounted on the machine stand 1 in the Y direction, which is the same direction as the transfer direction of the workpiece w, and in the X direction, which is perpendicular to that direction.
Installed so that the position can be adjusted in any direction. That is, linear guide grooves 2 are formed on the left and right sides of the machine base 1, and a support base 3 equipped with an air clamp 3' is slidably attached to the guide grooves 2, and a drive mechanism 19 is attached to the support base 3. The wedge-shaped sliding grooves 4 formed on the bottom of the guide grooves 2 are fitted together to allow the units a and a' to be movably supported in the direction (X direction) perpendicular to the guide groove 2, thereby moving the units a and a' in the X and Y directions. and fix it at a predetermined position with an air clamp 3'.

In the example drawings, there are 4 on each left and right side on the machine base 1.
This shows a case in which a total of 8 units a, a..., a', a'... are arranged, and feed rollers 5 and 6 for transferring the work w are installed on the work loading and unloading sides of the machine 1, respectively. It is installed so that it can rotate intermittently.

Since the above-mentioned units a and a' have the same mechanism except that the arrangement is reversed, for convenience of explanation, unit a will be explained with reference to FIG. 4.

The case 10 is constructed by detachably attaching side plates 13 to both sides of a case main body 12 having a cross-sectional shape having a working space 11 as shown in FIG. 4, leaving the working space 11.

The drive mechanism 19 has a pulse motor 21 and an X-direction screw 22 rotated by the pulse motor 21 installed on a substrate 20 having the sliding groove 4 on the bottom surface, and a movable rail 23 screwed onto the screw 22.
and a pulse motor 24 arranged on the movable rail 23
The Y-direction screw 25 rotates by the case body 1.
It is screwed onto the side portion 12c of No. 2.

The drive mechanism 19 rotates the movable rail 2 by rotating the screw 22 driven by the pulse motor 21.
3 in the X direction (arrow A in FIG. 5), thereby making the case body 12 on the movable rail 23 freely movable in the X direction, and also by the rotation of the screw 25 driven by the pulse motor 24. Therefore, the case body 12 is moved by a small distance in the Y direction (arrow B in the figure) perpendicular to the X direction.

The case body 12 has a stepped portion 12'a formed at the tip of a space bottom wall 12a that partitions the work space 11, and a die 15 is attached to the stepped portion 12'a flush with the bottom wall 12a. In addition, a through hole 16a is opened in the upper wall 12b of the space that partitions the work space 11 and is coaxial with the receiving hole (not shown) of the die 15, so that the punch 16 is slidably mounted therein.

Further, the case body 12 is provided with an elevating mechanism 26 and an optical sensor 29 for centering the perforation mark m.

The elevating mechanism 26 includes an elevating mechanism main body 27 installed on the upper surface of the case main body 12, an elevating piston 28a linked to the punch 16 provided within the main body 27, and the piston 28a fitted into a cylinder 28b.
The air supply and exhaust hole 2 communicates with the cylinder 28b.
By supplying and discharging compressed air from 8c and 28d, the punch 16 is moved up and down a desired stroke to punch holes in the workpiece w.

The optical sensor 29 is attached to the tip of the upper wall 12b of the case body 12 at a predetermined distance from the punch 16 in the Y direction. The optical sensor 29 is a well-known centering sensor that detects the edges of the perforation mark m marked on the workpiece w in the vertical and horizontal directions as the case body 12 moves in the X and Y directions while continuing to emit and receive light. Then, the center of the mark m is measured and centered, and after centering, the punch 16 is positioned at the center.

A workpiece w, which is a material such as a circuit board, is carried into the above device by the drive of feed rollers 5 and 6, and the workpiece w has perforation marks m, m, etc. printed in advance at the perforation locations. , both left and right units a, depending on the arrangement of the marks m, m...
The positions of a..., a', a'... in the X direction and Y direction are set and arranged.

That is, the work w passes through the working spaces 11, 11' of the left and right units a, a' with both side edges, and is intermittently moved with its bottom surface in contact with the space bottom wall 12a that separates the die 15 and the working space 11. Although it is transferred,
When it stops, the optical sensor 29 of each unit a, a'
Set the position of the unit so that the drilling mark m is located below. After the work w is stopped, each unit sequentially performs the centering process and the drilling process in accordance with the order controlled by the computer using a predetermined command signal.

In the centering process, the sensor 29 of the instructed unit a measures the perforation mark m directly below it using the aforementioned known detection means that drives the drive mechanism 19 to move the case body 12, and determines the center coordinates of the mark.
X ₀ −Y ₀ is detected [FIG. 6], and after the detection, the pulse motor 24 is driven to move the case body 12 in the Y direction by the distance between the punch 16 and the optical sensor 29, and the punch 16 is moved to the center coordinate X. ₀ - Y ₀ , and the punch 16 is lowered by the operation of the lifting cylinder 28a to punch a hole at the center position of the mark m (FIG. 6). After drilling, the punch 16 returns to the upper position, and the drilling process of the unit a is completed (FIG. 6).

Next, the next instructed unit goes through the same two steps as above, and the same steps thereafter, and when the steps of all the units are completed, the feed roller 5,
6 is driven to feed the workpiece w by a predetermined amount, and when it stops, the same drilling operation is repeated again.

In the above-mentioned centering process, the centering process of the succeeding unit may start while the preceding unit is in the drilling process, and the succeeding unit may start the drilling process at the same time as the completion of the drilling process. It is possible to shorten the working time, and when the sensor does not detect a perforation mark during the centering process, the unit in question may determine that the perforation work is not necessary and move on to the next unit.

<Effects> As described above, when drilling reference holes in circuit boards, etc., the present invention allows a plurality of drilling units disposed on two opposite sides of the machine stand to be moved in the X direction and Y direction, respectively, while the workpiece is stopped. By adjusting the position in the direction, the centering sensor and punch of each perforation unit can be moved individually, and the centering operation of the perforation mark can be performed continuously, making it efficient even when the workpiece is in the form of a continuous sheet. Drilling work is possible. Therefore, the apparatus of the present invention can be incorporated into a production line in which continuous sheet-like workpieces are perforated, thereby greatly improving work efficiency.

[Brief explanation of drawings]

Fig. 1 is a plan view of the device of the present invention, Fig. 2 is a front view thereof, Fig. 3 is a side view thereof, Fig. 4 is an enlarged sectional view of the perforation unit, and Fig. 5 is a line 5-5 in Fig. 4. Cross-sectional views, FIGS. 6A and 6B are cross-sectional views showing a part of the process of the drilling operation. In the figure, 1 is the machine base, a, a' are the drilling units, 1
0, 10' are the case, 11, 11' are the work space, w
is the workpiece, 12a is the bottom wall, 15 is the die, 12b
16 is a punch, m is a perforation mark, 29 is an optical sensor, and 19 is a drive mechanism.

Claims (1)

[Claims] 1 A plurality of perforating units arranged on two opposite sides of the machine base are supported along the top surface of the machine base so that their positions can be adjusted freely in the X direction and the Y direction, respectively, so that each unit is positioned at the same height of the vertical flat case. A notch-like working space is formed at the position, and the space is oriented toward the center of the workpiece transfer path so that the workpiece passes through the workpiece, and each unit has a die at the tip of the bottom wall that separates the working space. , a punch facing the die is attached to an upper wall that separates the working space so as to be movable up and down, and an optical sensor for centering the perforation mark is attached to the tip of the upper wall at a predetermined distance from the punch;
A multi-axis drilling device is provided with a drive mechanism installed outside the case to move the drilling unit in the X direction and the Y direction.