JPH0723111Y2 - Support device for head moving mechanism in laser cutter - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a work piece such as a cloth arranged on a processing surface of a flat plate, and a head which is arranged facing the processing surface and moves in at least one direction. The present invention relates to a device for supporting a head moving mechanism in a laser cutter that irradiates a laser beam and cuts it so as to prevent deformation of a support body that movably holds a head.

[Prior Art] In the above-mentioned laser cutter, in order to move the head having the laser light source on the processing plane, the support is moved to one side (Y direction) of the processing surface, and is perpendicular to the moving direction. Which was achieved by moving the head in the longitudinal direction (X direction) of the support,
In order to move in the direction, for example, as shown in FIGS. 2 and 3, a belt 4 is wound around pulleys 2 and 3 arranged at both longitudinal ends of a support 1, and a motor 5 is connected to this one pulley 2. The belt 4 is operated by driving the motor 5 to move the head 6 in the X direction.

[Problems to be Solved] In such a case, since the weight of the head 6 acts as a load on the belt 4 stretched over both pulleys 2, 3,
A considerable amount of tension acts to stretch the belt 4, and as shown in FIG. 4, a bending moment acts on the support 1 to bend the support. For this reason, the belt 4 sags, the moving position of the head 6 becomes inaccurate, the optical axis of the laser beam shifts, and the cutting is not performed reliably, resulting in a decrease in reliability and a decrease in product quality. Occurred. In addition, since the structure of the support 1 is made rigid so that the support does not bend, the support 1 becomes large or heavy and the inertia becomes large, so that there are disadvantages such as high speed and low efficiency.

[Means for Solving the Problems] In order to solve such problems, the present invention generates tension almost equal to the direction opposite to the tension direction of the belt.
A tension generating mechanism including a wire stretched between both ends of the support in the longitudinal direction was provided.

[Operation] With such a configuration, the wire generates tension that cancels the bending moment applied to the support by the belt.

[Embodiment] This embodiment of the present invention will be described with reference to FIG. The same parts as the conventional ones are given the same numbers and their explanations are omitted. Pins 7 and 8 are projectingly provided on both ends in the longitudinal direction of the surface opposite to the pulleys 2 and 3 mounting surface of the support body 1, and one ends of two wires 9 and 10 are fixed to the pins 7 and 8, respectively. The other ends of 9 and 10 are connected to a turnbuckle 11. The turnbuckle 11 rotates the wire 9, depending on the direction of rotation,
The other end of 10 is contacted or separated, that is, the wires 9, 10 are adjustably pulled to generate tension.

The present invention has the above-described structure, and the operator rotates and adjusts the turnbuckle 11 at the time of assembling or adjusting the tension of the belt 4 and the wires 9 and 10 so that the bending moment is canceled and the support 1 is not bent. Balance with tension.

[Effect] As described above, since the present invention is provided with the tension generating mechanism including the adjusted wire between the longitudinal ends of the support so as to generate the tension substantially equal to the direction opposite to the tension direction of the belt, Since it is not necessary to make the support strong, and it can be made light and small, it can move at high speed by reducing the inertia, improve the efficiency, and prevent the support from bending due to bending moment. Since the cutting can be performed accurately without the optical axis of the light being displaced, the effect of improving the quality can be obtained.

[Brief description of drawings]

FIG. 1 is a front view showing a supporting device of a head moving mechanism of this embodiment, FIG. 2 is a perspective view of a conventional laser cutter, and FIG.
FIG. 4 is a front view of a conventional supporting device for a head moving mechanism, and FIG. 4 is a diagram showing a state in which the supporting device of FIG. 3 is bent.

Claims (1)

[Scope of utility model registration request] 1. A support body which is disposed above a flat machining surface and is long on one side of the machining surface; a belt which is stretched between both longitudinal ends of the support body and which is connected to a drive source; A head having a laser light source that movably supports in the longitudinal direction and irradiates the processing surface, and, in a supporting device of a head moving mechanism in a laser cutter having, to generate substantially equal tension in a direction opposite to a belt tension direction. A head moving mechanism supporting device in a laser cutter provided with a tension generating mechanism including a wire stretched between both ends in the longitudinal direction of a supporting body.