JPH09271987A - Working table for heat cutting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a working table for a heat cutting machine without catching on a work Supporting member at the time of carrying the work. SOLUTION: At the time of carrying the work, since a supporting member table 43 for carrying the work is set to higher position than the supporting member 31 with a vertical shifting mechanism 37, a supporting member 41 for carrying the work projected from a plane part 45 of the supporting member table 43 for carrying the work, supports the work W so as to be carriable. It is prevented to drop the work W into a gap of the work supporting member 31 with the plane part 45 of the supporting member table 43 for carrying the work. At the time of working, since the upper end of the supporting member table 41 for carrying the work is set to lower position than the upper end of the work supporting member 31 with the vertical shifting mechanism 37, the work W is supported to the work supporting member 31. For example, a driving member 37 is rotated by integrally fitting to a rotary shaft and the vertical shifting is executed. The width of the plane part 45 is set to such wide range as not to abut on the work supporting member 31 approached in the case of rotating the supporting member table 43 for carrying the work.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a processing table for a thermal cutting machine which supports a work from below during cutting.

[0002]

2. Description of the Related Art Referring to FIGS. 7 and 8, in a conventional laser processing machine 1 which is a general thermal cutting machine, a laser oscillator 3 for oscillating a laser beam LB and a laser beam from the laser oscillator 3 are produced. It has a laser processing machine body 5 for cutting the work W by LB.

In the laser processing machine main body 5, the main body frame 7
On the lower surface of the upper portion of the main body frame 7, there is provided a processing head 9 which can be moved and positioned in the X-axis, Y-axis, and Z-axis directions. A nozzle 11 for irradiating the laser beam LB is provided at the tip of the processing head 9.

On the other hand, below the body frame 7, a processing table 13 for horizontally holding the work W is provided. Referring to FIG. 9, in this processing table 13,
In order to support the work W from the lower side during processing inside the outer frame 15, for example, a lattice skit 19 in which a skid plate 17 having a mountain-shaped upper end is assembled in a lattice shape, or a needle mountain (not shown) for supporting the work W at points Are provided in a plurality of columns.

Further, between the lattice skits 19 and the like,
A free bearing 21 is provided to movably support the work W during transport of the work W so as not to damage it. Therefore, this free bearing 21 is used to carry in the work W.
When it is carried out, it projects upward from the upper end of the lattice skid 19 or the like, but when it is processed, it is buried below the lattice skit 19 or the like.

The vertical movement of the free bearing 21 is performed, for example, by rotating the rotary shaft 23, which is rotatably supported by mounting the free bearing 21, or by vertically moving the mounting portion of the free bearing 21 (not shown). Is common.

[0007]

However, in such a conventional technique, as shown in FIG. 10, the free bearing 21 is caught in the machined hole 25 after the cutting process, and the mountain of the skit plate 17 or the like. The work W is caught on the tip of a needle thread (not shown), or a thin work W
There is a problem in that it is difficult to carry out the work W after processing, especially when the work W is caught.

An object of the present invention was made in view of the above-mentioned conventional techniques, and it is an object of the present invention to provide a processing table for a thermal cutting machine which does not get caught on a work supporting member when a work is conveyed. .

[0009]

In order to achieve the above-mentioned object, a processing table for a heat cutting machine according to a first aspect of the present invention is a work supporting member for supporting a work at the time of heat cutting, and a work being movable during conveyance. A processing table for a thermal cutting machine having a plurality of work transfer support members provided between the work support members for supporting the work transfer member having a flat surface portion of the work transfer time support member. A workpiece conveying support member table having a hole for projecting an upper end portion, an upper end of the workpiece conveying support member is movable below the workpiece supporting member upper end, and the workpiece conveying support member table is the supporting member upper end. And a vertical movement mechanism capable of projecting at the same position or upward.

Therefore, during the work transfer, the vertical moving mechanism sets the support member table during the work transfer to the same position as the work support member or at a higher position, so that the work transfer projecting from the flat surface of the support member table during the work transfer. The time support member supports the work in a freely transportable manner. At the same time, the flat surface of the support member table prevents the work from falling between the work support members during the work transfer. On the other hand, at the time of processing, the vertical movement mechanism sets the upper end of the support member at the time of conveying the work to a position lower than the upper end of the work support member, so that the work is supported by the work support member.

According to a second aspect of the present invention, there is provided a thermal cutting machine processing table in which the vertical movement mechanism according to the first aspect is configured such that the workpiece conveying support member table and the workpiece conveying support member are integrally mounted and are rotatable. It is characterized by comprising a plurality of rotary shafts, and a drive means for integrally rotating the work transfer support member table and the work transfer support member about each of the rotation shafts.

Therefore, since the work transporting support member table and the work transporting support member are integrally attached to the rotary shaft, the drive means rotates the rotary shaft to move the flat portion of the work transporting support member table. Move and position above the upper end of the support member,
During work transfer, the support member is moved / positioned to a position lower than the upper end of the support member.

According to a third aspect of the present invention, there is provided a processing table for a heat cutting machine, which has a wide width as long as the flat portion of the first and second aspects does not come into contact with an adjacent work supporting member when rotating around the rotary shaft. It is characterized by having.

Therefore, the width of the flat surface portion of the support member table during work transfer is set to be wide as long as the support member table during work transfer is rotated by rotating the rotary shaft so as not to contact the adjacent work support member. It

According to a fourth aspect of the present invention, there is provided a processing table for a thermal cutting machine, wherein the work supporting member is swingable toward a work carrying supporting member table side at a position where the work carrying member is in a work carrying state. It is characterized by that.

Therefore, at the time of carrying a work, the work supporting member at every arbitrary position is swung so as to be inclined from the upright state to the work carrying supporting member table side at the position of the work carrying state. Even a work is further prevented from being supported and dropped by the support member table when the work is transported.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of the present invention will be described with reference to the drawings.

1 and 2 show the structure of the processing table 27 for the thermal cutting machine. Referring to FIG. 2, a plurality of rotating shafts 33 are provided between the lattice skits 31 as work supporting members provided inside the outer frame 29, for example, in the conveying direction of the work W (vertical direction in FIG. 2). Is stretched along. A sprocket 35 is provided on the plurality of rotary shafts 33, and each sprocket 35 is connected by a drive chain 37 that constitutes a vertical movement mechanism. As a result, the rotating shaft 33 rotates in synchronization with the driving of a drive motor (not shown).

Referring to FIG. 1, the rotary shaft 33 is provided with a plurality of bearing pedestals 39, and a free bearing 41 serving as a supporting member at the time of carrying a work is rotatably provided at the tip of the bearing pedestals 39. It is provided.
The height of the bearing pedestal 39 is set so that the free bearing 41 projects from the upper surface of the lattice skit 31 when the work W is transported.

Further, the rotary shaft 33 has a free bearing table 4 as a support member table for conveying the work.
3 are provided. This free bearing table 4
A thin plate 3 is formed by bending, and is provided along the rotary shaft 33.

Work W of the free bearing table 43
A flat portion 45 is provided at the upper end at the transporting position, and the free bearing 41 projects from a hole 47 formed in the flat portion 45. Reinforcing rib plates 49 corresponding to the shape of the flat surface portion 45 of the free bearing table 43 are provided at predetermined intervals.

Since the height of the flat surface portion 45 is set to be the same height as the lattice skit 31 or slightly protrudes when the work W is conveyed, the free bearing 41 is above the lattice skit 31 as described above. Will be projected (pass line during transportation in FIG. 1).

Further, the width B of the flat surface portion 45 has a lattice skit 31A, 31B on which the rotary shaft 33 is provided.
It is determined from the interval BS between. That is, when the free shaft 41 and the free bearing table 43 are rotated by rotating the rotary shaft 33, the width B is set to be as wide as possible so that the free bearing 41 and the free bearing table 43 do not interfere with the lattice skits 31A and 31B. is there.

The rotary shaft 33 is provided with a protective plate 51 formed by bending a plate material to prevent chips and dust from entering the free bearing table 43.

From the above results, since the free bearing table 43 and the free bearing 41 project above the lattice skit 31 when the work W is conveyed, the work W
Are supported by the free bearings 41, and are transported while being supported by the entire free bearing table 43 between the free bearings 41. For this reason, the workpiece W can be smoothly transported without dropping between the lattice skits 31 during transportation.

Further, during machining, the rotary shaft 33 is rotated to retract the free bearing table 43 and the free bearing 41 to a position lower than the upper end of the lattice skit 31, so that the work W is supported by the lattice skit 31 during machining. It will be held at the height of the pass line.

Incidentally, in FIG. 1, a lattice skit 31A
As indicated by the solid line, the workpiece W to be conveyed is tilted to the free bearing table 53 side in the workpiece conveying state by a driving device (not shown) as close as possible.
Can be prevented from falling further.

Next, FIG. 3 shows an example of another embodiment. In FIG. 3, the free bearing 53 as a support member during the work transfer is attached to a free bearing table 57 as a support member table during the work transfer via a free bearing cradle 55, and on the flat surface portion 59 of the free bearing table 57. Hole 6 provided
It protrudes from 1.

A rotary shaft 67 is provided below a skit 65 as a work supporting member mounted by the skit mounting block 63. The free bearing table 57 is rotated about the rotary shaft 67. Has become.

Inside the free bearing table 57, there is provided an arm member 71 which also serves as a reinforcing rib 69, and the lower end portion of the arm member 71 has an elongated hole 73.
Is provided.

On the other hand, below the arm member 71, a slide shaft 75 orthogonal to the longitudinal direction of the free bearing table 57 is provided, for example, the cylinder 7 as shown in FIG.
7 is provided so as to be reciprocally movable by being fixed to a piston rod 79, and a long hole 73 of the arm member 71 is locked to a pin 81 provided on the slide shaft 75 while allowing some movement. There is.

From the above results, when the slide shaft 75 is moved leftward in FIG. 3 by the cylinder 77 at the time of loading, the lower end portion of the arm member 71 moves leftward and the arm member 71 moves the rotary shaft 67. Since it rotates in the hour hand direction around the center, the free bearing 53 projects above the skit 65 and is positioned on the conveying path line (state shown by the solid line in FIG. 3). At this time, pin 8
1 reciprocates inside the elongated hole 73.

As a result, the space between the skits 65 is filled with the flat surface portion 59 of the free bearing table 57, so that the work W is smoothly conveyed without being caught by the skits 65.

During processing, the slide shaft 75 is moved to the right in FIG. 3 by the cylinder 77 to rotate the arm member 71 in the counter hour hand direction, and the free bearing 53 and the free bearing table 57 are skided 65. Are evacuated below the upper end of (the state indicated by the chain double-dashed line in FIG. 3).

As a result, the work W is supported by the skit 65 and is positioned on the pass line during processing, so that cutting work is performed.

The present invention is not limited to the above-described embodiment, but can be embodied in other forms by making appropriate changes. That is, although the case of the lattice skit 31 has been described in the above-mentioned embodiment, the needle skid type can be similarly applied.

Further, as shown in FIG. 5, the rotating shaft 8 is attached to the skit 83 as a fixed work supporting member.
5, a free bearing 87 is mounted as a support member for transporting the work, and a free bearing table 91 having wheels 89 provided at the bottom is rotatably provided. A linear cam 93 is reciprocally provided below the free bearing table 91, and a tension spring 95 attached to the linear cam 93 moves the free bearing cradle 39 to the opposite hour hand direction in FIG. It is urged to prevent it from being separated from the linear cam 93.

Therefore, the free bearing table 91 rotates up and down around the rotary shaft 85 in accordance with the reciprocating motion of the linear motion cam 93, so that the free bearing 87 is rotated.
Can project from the upper end of the skit 83. Even with this configuration, it is possible to obtain the same effects as the above-described embodiment.

Further, referring to FIG. 6, through the rotary shafts 99, 99 mounted on both sides of a skit 97 as a fixed work supporting member, free bearings 101 as work supporting members are mounted respectively. A pair of free bearing pedestals 103, 103 are rotatably provided, and the vertical movement of the cylinder 105 causes the free bearing tables 103, 103 to rotate in the vertical direction via the rigid connecting members 107, 107. Is also good. Even with this configuration, it is possible to obtain the same effects as the above-described embodiment.

In any of the above-described embodiments, the free bearing 4 is used as a supporting member during the work transfer.
Although the case of using 1, 53, 87, 101 has been described, the same applies to the case of using a roller instead. Further, it may be moved up and down without using the rotational movement.

[0041]

As described above, according to the processing table for the thermal cutting machine of the first aspect of the present invention, when the work is conveyed, the vertical movement mechanism determines whether the support member table is at the same position as the work supporting member during the work conveying. Alternatively, the work transfer support member, which is set at a high position and protrudes from the flat portion of the work transfer support member table, supports the work in a freely transferable manner, so that the work can be transferred smoothly. At the same time, the flat portion of the table for supporting members at the time of transporting the work, which is provided around the supporting member for transporting the work, fills the space between the work supporting members flatly, so that the work can be prevented from falling between the work supporting members. On the other hand, at the time of processing, the vertical movement mechanism sets the upper end of the support member at the time of conveying the work at the same position as or lower than the upper end of the work support member, so that the work is supported by the support member and can be cut.

According to the processing table for the thermal cutting machine of the second aspect of the present invention, since the work transporting support member table and the work transporting support member are integrally attached to the rotary shaft, the driving means drives the rotary shaft. By rotating, the flat part of the support member table during work transfer is moved and positioned above the upper end of the support member to accommodate loading, and the support member during work transfer is moved to a position lower than the upper end of the support member. It can be positioned and dealt with during processing.

According to the processing table for the thermal cutting machine of the third aspect of the present invention, when the rotating shaft is rotated and the supporting member table is rotated when the workpiece is rotated, the supporting table does not come into contact with an adjacent supporting member when the workpiece is transferred. Since the width of the flat surface portion of the supporting member table is set to be wide, it is possible to prevent the space between the work supporting members from being filled with the flat surface portion of the supporting member table at the time of transferring the work, and the work from falling between the work supporting members. As a result, the work can be smoothly transported.

According to the processing table for the thermal cutting machine of the fourth aspect of the present invention, when the work is conveyed, the work supporting member is swung at every arbitrary position so that the work supporting member is at a position from the upright state to the work conveying state. By tilting to the support member table side during work transfer, it is possible to further prevent even a small work from being supported and dropped by the support member table during work transfer.

[Brief description of drawings]

FIG. 1 is a sectional view showing a main part of a processing table for a thermal cutting machine according to the present invention.

FIG. 2 is a plan view showing an entire processing table for a thermal cutting machine according to the present invention.

FIG. 3 is a sectional view showing another embodiment of the processing table for the thermal cutting machine according to the present invention.

FIG. 4 is an explanatory view showing a drive device of the slide shaft in FIG.

FIG. 5 is an explanatory view showing another vertical mechanism.

FIG. 6 is an explanatory view showing still another vertically moving mechanism.

FIG. 7 is a front view showing the whole of a general laser processing machine as a thermal cutting machine.

FIG. 8 is a side view seen from the direction VIII in FIG. 7.

FIG. 9 is a plan view showing a conventional processing table for a thermal cutting machine.

FIG. 10 is an explanatory diagram showing a problem in a conventional processing table for a thermal cutting machine.

[Explanation of symbols]

27 processing table 31, 65, 83, 97 skit (work support member) 33, 67, 85, 99 rotating shaft 37 drive chain (vertical movement mechanism) 41, 53, 87, 101 free bearing (support member during work transfer) 43 , 57 Free bearing table (supporting member table at the time of work transfer) 45, 59 Flat part 47, 61 hole W Work

Claims (4)

[Claims] 1. A thermal cutting machine having a work supporting member for supporting a work during thermal cutting, and a plurality of work conveying supporting members provided between the work supporting members for movably supporting the work during transportation. And a workpiece transfer support member table having a flat surface portion and a hole for projecting the upper end portion of the workpiece transfer support member in the flat surface portion, and an upper end of the workpiece transfer support member is the workpiece. For a thermal cutting machine, comprising: a vertical movement mechanism that is movable below an upper end of a support member and that allows the support member table to be in the same position as the upper end of the work support member or protrude upward when the work is transported. Processing table. 2. The up-and-down moving mechanism has a plurality of rotatable shafts to which the work transfer support member table and the work transfer support member are attached integrally, and the work transfer support member table and the work transfer member. 2. A processing table for a thermal cutting machine according to claim 1, further comprising: a driving unit that integrally rotates the time supporting member around each of the rotating shafts. 3. The flat portion has a wide width as long as the flat portion does not come into contact with an adjacent work supporting member when rotated around the rotary shaft.
Processing table for the described heat cutting machine. 4. The work supporting member according to claim 1, wherein the work supporting member is provided so as to be swingable to a support member table side at the time of carrying the work at a position of a work carrying state at every arbitrary position. Processing table for heat cutting machine.