JPS61289989A - Table for cutting machine - Google Patents

Abstract

PURPOSE:To permit the easy, safe and quick feed, transfer and ejection of works by fixing needle-like posts for supporting materials between tables above endless chains and providing bearing posts highter than the needle-like posts in the stage of feeding the materials. CONSTITUTION:The positioning and fine adjustment of the feed and ejection of the works 1 are preliminarily executed in the 1st range 13 of the endless chains 3a, 3b, i.e., by operating a lifting mechanism 19 to preliminarily raise universal rotating body 17 groups. The works 1 are fed with the light force by rolling of the body 17 groups after the works are positioned and finely adjusted, the mechanism 19 is operated to lower the body 17 groups. The works 1 are transferred onto needle groups 33 and the chains 3a, 3b are driven. The chains are stopped when flat plate-shaped slats 39 come under the range where the works 1 are to be imposed. Cutting is executed and the table is restored to the original state, then the works 1 are ejected.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] This invention relates to improvements in cutting machine tables for thermal cutting, particularly laser light cutting.

[Technical Background and Problems] The table for placing the workpiece in a laser beam cutting machine is often a so-called needle table, which has a large number of needle-shaped protrusions arranged with the upper end positioned on a horizontal plane. . This is because the laser beam or assist gas needs to pass through to the back surface of the work, so a space must be provided on the back surface of the work. However, when placing a workpiece on this needle table, there are many difficulties when the workpiece is of a certain size and weight, that is, the workpiece has a shape and weight that cannot be easily handled with one's hands. That is, it is difficult to transport the workpiece to a predetermined position on the needle. This is because sliding the workpiece on the needle must be avoided as it may cause damage, and therefore the work that has been moved while floating on the needle must be gently lowered and placed on the needle. be.

For the same reason, fine positioning adjustments on the pincus cannot be made by sliding, and the needle floats and makes fine movements, which is extremely difficult to operate. Carrying out the workpiece after the cutting process similarly requires lifting and movement, and furthermore, it is troublesome to take out the workpiece, chips, etc. that have fallen below the needle.

[Purpose of the Invention] This invention was devised in view of the above-mentioned problems, so that workpieces can be easily carried in and out of the needle table without any problem, and minute positioning movements such as reference point alignment can be easily and reliably carried out. The purpose is to provide cutting machine tables.

[Structure of the Invention] This invention, which can achieve the above object, provides a slat in a part of an endless chain that can be driven freely in circulation, and a material is supported at a position facing the slat when it is delivered. A slat equipped with a bearing branch is provided so that it can be raised and lowered, and a needle-shaped support for supporting the material during processing is fixed between the table above the endless chain. This is a thermal cutting machine table that is set higher than the standard.

[Embodiment of the Invention] An embodiment of the present invention will be described below based on the drawings of FIGS. 1 to 7.

An endless chain 3a is located below the area where the workpiece 1, that is, the workpiece 1, is conveyed to the cutting machine (not shown).

A total of two sets of 3b are arranged, one on each side in the width direction.

The chain length of the endless chain 3aXb is more than twice the distance required to transport the workpiece 1.Therefore, the endless chain 3a, 1) is attached to the sprocket wheels 5a to 5h.
The machine length of the chain conveying device arranged across the chain is approximately equal to the sum of the length of the workpiece 1 placement range, the carry-in distance, and the carry-out distance, that is, the necessary conveyance distance of the workpiece 1. The endless chains 3a, 3b are equipped with a drive mechanism in which one of the sprocket wheels 5a to 5h is driven and rotated by a geared motor 7.

In this embodiment, a slab [-1] has nine upright fins 9 arranged between the left and right endless chains 3a and 3b.
1 is being passed. The range in which the finned slats 11 are arranged is a first range 13 having a length corresponding to the distance required for transporting the work 1 on the endless chino 3aSb. A notch 15 is provided in the vicinity of the center of the fin top of each of the plurality of 9 groups of fins of the finned slat 1-11 in the transport direction. A freely rotatable body 17 is attached to each of the notches 15. An elevating mechanism 19 is provided for simultaneously elevating and lowering a group of freely rotatable bodies 17 arranged in large numbers in the first range 13. In the case of the embodiment, the elevating mechanism 19 has a finned slat 11 having a groove-shaped cross section, and rollers 21 and 2 mounted on both ends of the slat 11.
Guide rail 25 with swing link 23 on which 1 is riding
, a cylinder device 27 that slides the guide rail 25
, a spindle 29 with a spring (see FIG. 2) interposed between the endless chains 3a, 3b and the slat 11. When the cylinder device 27 slides the guide rail 25, the guide rail 25 is raised and lowered by the swing link 23, and the groove-shaped cross-section slat 11 is raised and lowered via the roller 21, and naturally the fins 9 of the slat 11 are raised and lowered.
A group of 17 freely rotatable bodies attached to the top notch 15 of the holder moves up and down. The mounting height of the group of freely rotatable bodies 17 is determined so that the top level of the group of freely rotatable bodies 17 when it is raised corresponds to the transport level of the workpiece 1. The spring-equipped spindle 29 prevents the endless chain 3a1b from moving up and down when the groove-shaped cross-section slat 11 with the fins 9 moves up and down as the guide rail 25 moves up and down, thereby maintaining smooth driving of the endless chain 3a1b. It is for.

Needle-like protrusions 31 as supporting members having a large number of sharp tips are arranged between a large number of rotatable bodies 17 arranged above the fins 9 of the slat 11 with the fins 9, thereby forming a workpiece mounting seat. A pincushion 33 is formed as a surface. Acicular process 3
As shown in the figure, in the embodiment in which the endless chains 3a and 3b are installed in the tension direction near the 9 rows of fins of the slat 11, they are arranged at a partial pitch above the 8 beams 35 lined up in the width direction. It is. The top level of the group of nail-like protrusions 31 is determined to be several IJ mm lower than the top level of the group of freely navigable rotary bodies 17 when they are raised.

For the remaining second range 37 other than the first range 13 on the endless chains 3a and 3b, the endless chains 3a and 3b
, flat plate-shaped slat 3 in a form that almost closes the vertical direction between b.
9 is installed. Before and after the tensioning range of endless chains 3a, 3b, that is, of work 1! Before and after the necessary range of M transport, there is a loading table 41 for the workpiece 1 on the right side in Fig. 2.
Similarly, a table 43 for taking out the workpiece 1 is provided on the left side. Further, a packet 45 is placed below the take-out table 43.

Next, the operation of the cutting machine double, which has an irregular structure, will be described.

Loading and unloading workpiece 1 and fine adjustment of positioning are shown in Figures 4 and 5.
As shown in FIG.
After positioning the group and operating the lifting mechanism 19, the freely rotating body 17
Keep the group elevated.

Then, the workpiece 1 can be pulled in and carried in with extremely light force by shifting the group of freely rotating bodies 17, and after fine positioning is made, the elevating mechanism 19 is operated to lower the group of freely rotating bodies 17.

The workpiece 1 is transferred to the pincushion 33, after which the endless chains 3a and 3b are driven, and the second range 37, that is, the flat plate-like slat 39 comes below the workpiece 1 placement range and is stopped. This state is shown in FIGS. 6 and 7, and processing is performed in this state. When the machining is completed, the workpiece 1 is returned to the state shown in FIGS. 4 and 5, and the next new workpiece 1 is carried out.
can be carried in, and the above steps are repeated thereafter.

By operating in this way, the cutting machine table of the present invention can perform each operation of each of the stairs either manually or automatically.

Fine adjustment of transportation and positioning is carried out on the 17 groups of freely rotatable bodies, so it can be operated easily, easily, reliably, and quickly.
Since it can be done without coming into contact with 3, there is no risk of getting hurt. Large and heavy workpieces can be handled easily, safely, and quickly. More nails +1. + Chips, small machining parts, spatter, etc. that fell below 33 are also removed from the endless chain 3a.
Since it is taken out into the packet 45 by driving b, it is extremely easy and safe.

This invention is not limited to the one embodiment described above, and can be modified and applied in many ways. For example, various mechanisms other than those described above can be used for the elevator m19 of the group of freely rotating bodies 17, and the mechanism can be made extremely simple by using an air cylinder or the like to raise and lower the entire chain conveying device.

In addition, this cutting machine table can be conveniently applied to gas cutting machines other than laser beam cutting machines, high-pressure water cutting machines other than thermal cutting methods, and processing machines other than cutting machines, so it has an extremely wide range of applications. wide.

[Effects of the Invention] As is clear from the above, the cutting machine table of the present invention facilitates various operations such as loading the workpiece, adjusting positioning, transferring it to the needle, picking up and transferring it from the nail III after processing, and carrying it out. It can be done extremely easily, safely, quickly, and reliably, and can be automated, resulting in many effects. Furthermore, it can be widely applied as a transport table that is easy to position, not only for cutting machines but also for other processing machines.

[Brief explanation of the drawing]

Fig. 1 is a schematic perspective view of an embodiment of the cutting machine table of the present invention, Fig. 2 is a sectional view of the main part of the device shown in Fig. 1, Fig. 3 is a plan view of Fig. 2, and Fig. 4 is a schematic perspective view of an embodiment of the cutting machine table of the present invention. Figure 5 is a front configuration diagram showing the state during loading, unloading, and positioning adjustment of the workpiece.
FIG. 6 is a configuration diagram when the figure is viewed from the side, FIG. 6 is a configuration diagram when the workpiece is being processed when viewed from the front, and FIG. 7 is a configuration diagram when FIG. 6 is viewed from the side. Explanation of main drawing symbols 1... Workpiece 3a1b... Endless chain 11... Fined slat 13... First range 17... Freely rotating body 19
・・・Lifting mechanism

Claims (1)

[Claims] A slat is provided in a part of the endless chain that can be freely circulated, and a slat that is equipped with a bearing column that supports the material during transportation is provided at a position opposite to the slat that can be raised and lowered, and a slat is installed between the tables above the endless chain. 1. A thermal cutting machine table, characterized in that a needle-like support for supporting a material during processing is fixedly provided, and the bearing support is provided higher than the needle-like support when the material is carried in.