JPH06233Y2 - Processing table of laser processing machine - Google Patents

Description

[Detailed description of the device]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a processing table for a laser processing machine, and enables a work piece to be easily loaded or unloaded on the processing table.

[Prior art]

Generally, in a laser processing machine, a plate material as a workpiece is placed on a lattice-shaped or needle-shaped support member provided on a processing table to perform laser processing. Therefore, it is necessary to carry in the work to be loaded and placed on the support member, but there is a drawback in that the work requires a great deal of labor especially when the work is large. By the way, conventionally, in a table such as a press brake, an elevating member is provided on the table so as to be able to ascend and descend, and a ball is provided on the elevating member, and when the elevating member is raised, the work piece is easily carried in by the ball. It has been proposed that the table be fixedly supported by the table when the lifting member is lowered (Japanese Utility Model Laid-Open No. 56-12526).

[Problems to be solved by the device]

However, when such a means is used in a laser processing machine, especially when the ball is located immediately below the workpiece, the laser beam that has penetrated the workpiece during laser processing is The ball may be damaged, smooth rotation of the ball may be impaired, and the workpiece may not be conveyed. By the way, in laser processing, it is usual to set the energy density so that the laser beam penetrating the workpiece does not damage the processing table itself. It is possible to prevent the ball from being damaged by the laser beam if it is sufficiently lowered to a certain extent, but in that case, since it is necessary to raise and lower the ball relatively greatly,
In particular, when the work piece is a heavy work piece, the lifting mechanism is large and expensive. In view of such drawbacks, the present invention makes it possible to easily carry a workpiece onto a processing table by means of the ball by means of a mechanism which is smaller and less expensive than the lifting mechanism, and at the time of laser processing, the ball The present invention provides a processing table of a laser processing machine, which can prevent the laser beam from being damaged by a laser beam.

[Means for Solving the Problems]

That is, the present invention provides a processing table of a laser processing machine that includes a supporting member that supports a workpiece, and that performs laser processing by irradiating a laser beam on the workpiece placed on the supporting member. The rotating member is rotatably supported, and the rotating member is provided with a ball capable of carrying the workpiece, and the rotating member is provided with a first rotating position in which the ball projects above the supporting member, and The rotation driving means is provided for rotating the ball to a position below the supporting member and for moving the ball to a second rotation position where the rotation member itself shields the laser beam from irradiation.

[Action]

According to the above configuration, the ball can be projected upward from the support member by locating the rotary member at the first rotation position, so that the ball can easily carry in and carry out the workpiece. it can. Then, if the rotary member is positioned at the second rotation position by the rotation driving means while the workpiece is carried in, the balls can be positioned below the support member, so that the workpiece is supported by the support member. Moreover, since the ball is shielded from the irradiation of the laser beam by the rotating member itself, it is possible to prevent the ball from being damaged by the laser beam during the laser processing. Further, since it is only necessary to rotate the rotating member by the rotation driving means, the rotation driving means is small and inexpensive as compared with an elevating mechanism in which the ball is moved up and down largely even if the workpiece is a heavy object. Can be one.

【Example】

The present invention will be described below with reference to the illustrated embodiment.
In FIG. 2, 1 is a processing table of the laser processing machine,
The processing table 1 integrally includes a large number of needle-shaped support members 2 that support a workpiece such as a steel plate (not shown). As is well known in the art, a laser nozzle for emitting a laser beam (not shown) is arranged on the processing table 1, and the processing table 1 can be moved in the XY directions as required. , Or fixed. A plurality of rotating members 3 are arranged on the processing table 1 in parallel with the direction of loading the workpiece as indicated by the arrow in FIG. 1 so as to be rotatable with respect to the machine frame of the processing table 1. In addition to being pivotally supported, a plurality of balls 4 are provided on one side of each rotary member 3 as a transporting means for transporting a workpiece at a required interval. When the ball 4 is located at the first rotation position, which is directed upward with the rotation of the rotating member 3, the ball 4 is in a protruding position that protrudes upward from the top of the needle-shaped support member 2, and in this state The workpiece can be transported in. On the other hand, when the rotating member 3 is rotated 180 degrees from the above rotation angle position to the second rotating position in which the ball 4 is directed downward, the ball 4 and the rotating member 3 are, of course, triangular on the side opposite to the ball 4. The top of the shape is also lower than the top of the needle-shaped support member 2 so that the workpiece on the ball 4 can be supported by the needle-shaped support member 2. In this state, since the ball 4 is shielded from the laser beam irradiation by the rotating member 3 itself, damage by the laser beam is prevented. Further, the surface of the rotating member 3 also serves as a guide for the work piece, and particularly when the work piece is made of a thin steel plate, the tip of the steel plate is lowered by its own weight.
The surface is supported to prevent the tip of the needle-shaped support member 2 from being caught. And the ball 4
Is provided so as to slightly project from the surface of the rotating member 3,
The tip of the steel plate smoothly moves from the surface of the rotating member 3 to the ball 4
I am able to move up. In the case where the thin steel plate is to be processed in large numbers, it is possible to prevent the contact between the steel plate and the rotating member 3 by setting the interval between the balls 4 narrow in advance. Each of the rotating members 3 has a pinion 5 on one side thereof, and each of the pinions 5 meshes with a rack 6. The back side of the tooth portion of each rack 6 is supported by a roller 7 so as to be reciprocally movable in a direction orthogonal to the carrying-in direction of the workpiece, and each rack 6 is mutually connected by a connecting rod 8. They are connected together to form a single rod. Then, one end of this rod-shaped body is connected to the cylinder device 9. In FIG. 1, 10 is a ball provided on the machine frame of the processing table 1. According to the above configuration, when the workpiece is carried in, if the rotating member 3 is rotated to the first rotation position by the cylinder device 9 and all the balls 4 are directed upward, the workpiece is processed by the balls 4. The object can be easily carried in, and because it is a ball, the object can be easily positioned not only in the carrying-in direction but also in the direction orthogonal thereto. When the workpiece is positioned, the cylinder device 9 is actuated to rotate the rotating member 3 to the second rotation position so that all the balls 4 face downward. It can be placed on top of which the laser processing can be carried out and the ball 4 can be shielded from the irradiation of the laser beam by the rotating member 3 itself. After the laser processing is completed, if there is a work piece that can be conveyed by the ball 4 on the needle-shaped support member 2, the rotary member 3 is again moved to the first position by the cylinder device.
By rotating the ball 4 to the rotating position and directing the ball 4 upward and placing the workpiece on the ball, the workpiece can be easily carried out.

As described above, according to the present invention, by positioning the rotating member at the first rotation position, the work piece can be easily carried onto the processing table by the balls provided on the rotating member. Further, by positioning the rotary member at the second rotation position during laser processing, the workpiece can be supported by the support member, and the ball is damaged by the laser beam by the rotary member itself. The effect that it can be prevented is obtained. Further, even if the molten metal piece is scattered during the laser processing, it can be prevented from adhering to the ball. Therefore, it is possible to prevent the situation in which the rotation of the ball is obstructed by the adhesion, and the work piece is Even in the case of a heavy object, it is possible to obtain an effect that the rotation driving means can be made small and inexpensive as compared with an elevating mechanism which elevates and lowers the ball largely.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of the present invention, and FIG.
It is sectional drawing which follows the II-II line of a figure. 1 ... Machining table 2 ... Needle-like support member 3 ... Rotating member 4 ... Ball 5 ... Pinion 6 ... Rack 9 ... Cylinder device

Claims (1)

[Scope of utility model registration request] 1. A processing table of a laser processing machine, comprising: a supporting member for supporting an object to be processed, wherein the object to be processed placed on the supporting member is irradiated with a laser beam to perform laser processing. The rotating member is rotatably supported, and the rotating member is provided with a ball capable of carrying the workpiece, and the rotating member is provided with a first rotating position in which the ball projects above the supporting member, and A laser beam machine is provided with rotation driving means for moving the ball to a position below the support member and for moving the ball to a second rotation position where the ball is shielded from irradiation of a laser beam by the rotation member itself. Processing table.