JPS61286084A - Cutter table - Google Patents

Abstract

PURPOSE:To facilitate the operation in carrying in and positioning and carrying out after working of a work by providing freely vertically movably a groove shaped slat in the range of one part of the circulating plate slat and by providing the freely rotating body group movable vertically for work movement and the numerous needle body group movable vertically for work movement and the numerous needle beds for placing works on the upper part thereof as well. CONSTITUTION:The carrying in and carrying out of a work 1 is performed by moving the second range 33 of endless chains 23a, 23b to the lower part of the work 1, by lifting a groove shaped slat 35 by a lifting mechanism 39 and by raising the work 1 higher than the top level of a needle bed 3 and freely rotating body 13 group by a fin 37. The work 1 is then located correctly by its sliding to the before, behind and right, left by its placing on the freely rotating body 13 with the descent of the fin 37 by moving the lifting mechanism 39 to the lower part. The work 1 is then worked by placing on the needle bed 3 with the descent of the freely rotating body 13 group. Then with the ascent by the lifting mechanism 39 of the slat 35 with the fin 37 the work 1 is placed on the fin 37 and transferred.

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] A table for placing a workpiece in a laser beam cutting machine has a number of needle-like protrusions, the upper end of which is positioned on a horizontal plane, a so-called needle table or a number of knifes. Seats arranged side by side are often used. 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, there are many difficulties when it comes to the pain of placing a workpiece on this needle table or the like, and when the workpiece is of a certain size and weight, that is, the workpiece is too large and fiffi to be handled lightly with one's hands. That is, first, it is difficult to carry the workpiece to a predetermined position on the needle. This must be avoided as sliding the workpiece on the pincushion can cause damage, so the workpiece, which has been moved with the pincushion floating, should be gently lowered and placed on the pincushion. This is because it has to be placed. For the same reason, it is not possible to make fine positioning adjustments on the needle by sliding it, and the needle floats and makes minute movements, which is extremely difficult to operate. Carrying out the workpiece after the cutting process similarly required lifting and movement, and furthermore, it was dangerous and troublesome to take out the workpiece, chips, etc. that had fallen below the pincushion.

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

[Structure of the Invention] In order to achieve the above object, the present invention provides a workpiece mount comprising a support member having a plurality of sharply formed tips disposed at a workpiece mounting level with the upper end aligned on a substantially horizontal plane. A device for positioning and moving workpieces, which is located between a mounting seat and a support member for this seating surface, and has a lifting mechanism that can move the top level up and down with respect to the workpiece mounting level, and is arranged on a substantially horizontal plane. A group of freely rotatable bodies, and a flat plate disposed below the seating surface and the group of freely rotatable bodies so as to substantially close the vertical direction between the endless chains for a first range corresponding to the required workpiece conveyance distance. A plurality of rows of fins are provided in the remaining second range other than the first range of the endless chain, protruding between the needle and the group of freely rotating bodies, and arranged in such a manner that a workpiece can be placed and transferred. A cutting machine table was constituted by a lifting mechanism provided so that the fin top level of the slat having these fin rows could be vertically displaced relative to the top level of the seat surface.

[Embodiment of the Invention] An embodiment of the present invention will be described below based on the drawings of FIGS. 1 to 9.

A needle 3 serving as a seating surface for placing the workpiece 1 is installed over a workpiece placement range at a level at which the workpiece 1, that is, the workpiece 1, is placed on a cutting machine (not shown). The pincushion 3 has needle-like protrusions 7 as supporting members having a plurality of sharply formed tips and whose upper ends 5 are aligned on a horizontal plane located at the level on which the workpiece 1 is placed, arranged in four rows in the width direction as shown in the figure. It consists of

Below the needle-like protrusion 7 is a vertical support 9, and horizontal beams 9 arranged in a four-tree row/V in the left-right direction of the drawing also serve as a support valve. Four horizontal shafts 11 are arranged between each row of needle-like protrusions 7 of the pincushion 3 in a row in the left-right direction in the figure, and each horizontal shaft 11 has a large number of freely rotating bodies 13 ( (free ball bearings, etc.) are installed. The horizontal shafts 11 are each connected to a worm reducer 15, and each input shaft of the worm reducer 1115 serves as a common shaft 17, which is rotated in forward and reverse directions by a geared motor 19.

The horizontal shaft 11 is now rotated by 180°.

For example, when each horizontal shaft 11 rotates normally and the freely rotatable body 13 comes to the upper part, the top level of the group of freely rotatable bodies 13 is arranged to be several III degrees higher than the top level of the pincushion 3. Next, when the horizontal axis 11 is reversed by 180 degrees, a large number of conical caps 21 are disposed at positions where the top level becomes several points or more lower than the top level of the pincushion 3. In other words, the horizontal shaft 11 that rotates in forward and reverse directions serves as an elevating mechanism for the freely rotating body 13. Although a free ball is used as the freely rotatable body 13 in the embodiment, it may be a general-purpose caster roll.

A total of two sets of endless chains 23a and 23b are disposed on the left and right sides in the width direction below the range in which the pincushion 3 and the group of freely rotating bodies 13 are disposed. The chain length of the endless chains 23a and 23b is more than twice the distance required for transporting the workpiece 1.

Therefore, the captain as a chain transport device, which is arranged by extending the endless chains 23a and 23b across the sprocket wheels 25a-h, brings the work into the workpiece placement range and takes it out. . The endless chain 238%b is equipped with a drive mechanism in which any of the sprocket wheels 25a to 25h is driven by a geared motor 27.

Two first ranges are defined as the length equivalent to the necessary workpiece transport distance of the endless chains 23a and 23b, that is, about half the length of the endless chain 23a1b, and the flat slats 31 are attached to these ranges.

The flat slat 31 has left and right endless chains 23a.
, b, and almost blocks the horizontal plane in the vertical direction. Endless chain 23a,
The remaining second range 33 other than the first range 29 of b, that is, the flat plate-shaped slab]-31 is connected between the left and right endless chains 23a and 23b by a slat 35 with a groove-shaped cross section. ing. As shown in the figure, a large number of fins 37 are erected on the outer surface of the groove-shaped cross-section slat 35, forming a slat having a plurality of rows of fins.

The fins 37 are arranged in a protruding relationship between the row of needles 3 and the row of the freely rotatable bodies 13, and the work 1 is placed on the top of the fins 37 and transported.

Therefore, the fins 37 are attached to the endless chains 23a and 23b in the range where the groove-shaped cross-section slats 35 with fins are attached.
An elevating mechanism 39 is provided so that the top level of the pin 3 and the top level of the group of freely rotating bodies 13 can be displaced from above to below. In this embodiment, the elevating mechanism 39 includes a roller 41 attached to both ends of a groove-shaped cross-sectional slat 35, a guide rail 43 with a swing link on which the roller 41 rests, an air cylinder 45 for sliding the guide rail 43, and the above-mentioned. It consists of endless chains 23a, b and a spring-equipped spindle 47 interposed between groove-shaped cross-sectional slats 35. When the air cylinder 45 slides the guide rail 43, the guide rail 43 is raised and lowered by the swing link 49, and the fin 37 on the groove-shaped cross-section slat 35 is raised 111? Jru. The spring-equipped spindle 47 prevents the endless chains 23a and 23b from moving up and down together with the grooved cross-section slats 35. A take-out table 51 is disposed on the take-out side of the transport range of the workpiece 1 by the endless chains 23a and 23b, and a feed table 53 is disposed on the feed side.

Next, the operation of the cutting machine table having the above structure will be described.

The workpiece 1 is loaded and unloaded by moving the second range of the endless chain 23a1b below the workpiece 1, and then raising and lowering the groove-shaped cross-section slat 35 by 8 m as shown in FIGS. 4 and 5.
The work 1 is lifted by the operation 39, and the fins 37 place the work 1 higher than the top level of the pincushion 3 and the group of freely rotating bodies 13.

The workpiece 1 is carried out in the above-described state toward the left side in FIG. 1, transferred to the takeout table 51, and then taken out. As shown in FIG. 1, the workpiece 1 is brought in from the right-hand feeding table 53 and stopped approximately at the center of the drawing. At this position, the driving of the endless chains 23a and 23b is stopped, the lifting mechanism 39 is driven in the downward direction, the fins 37 are lowered, the workpiece 1 is transferred to the freely rotating body 13, and the endless chains 23a and 37 are lowered. Chin 23a
, b are driven again and advanced by about half the circumference length, and the flat plate-like slat 31' mounting range, that is, the first range 29, is moved toward the workpiece 1.
Comes down and stops. This state becomes the positioning stage of the workpiece 1 shown in FIGS. 6 and 7. At this positioning stage, the workpiece 1 is placed on the group of 13 freely rotatable bodies, so that it can be easily slid six ways in any direction, front, rear, left, or right, and accurate positioning adjustment can be performed. Of course, during this time, the top level of the group of freely rotating bodies 13 is maintained higher than the top level of the pincushion 3.

When the positioning adjustment of 1 node 1 is completed, the 13 groups of freely rotating bodies descend while maintaining the position, and the work 1 moves to 4 peaks 3.
It is then transferred to the processing stage shown in FIGS. 8 and M9. The group of freely rotating bodies 13 is lowered by rotating the horizontal shaft 11 by 180 degrees, and the direction of rotation is set by the workpiece 1.
It is convenient to maintain the positioning completion position by matching the direction in which there is a tendency to press against a positioning stopper (not shown). At this processing stage, the endless chain 23a
, b, the flat plate-like slat 31 mounting range is below the work 1, as in the previous stage of work positioning. Therefore, chips, small workpieces, spatter, etc. from the cutting process rest on the flat slat 31. When the machining stage is over and the workpiece 1 is to be unloaded, the endless chains 23a and 23b are driven about half a turn.

At this time, the flat slats 31 move together, so that the chips, small processed materials, spatter, etc. on the flat slats 31 are carried out and taken out. Endless chains 23a, b
When the slat 35 with fins 37 is positioned below the processed workpiece 1, the endless chain 2
3aSb is temporarily stopped.

Next, the slat 35 with the fins 37 is raised by operating the lift v1 structure 39, and the workpiece 1 is transferred from the needle 3 onto the fins 37. In this state, the endless chains 23a and 23b are driven again and the workpiece 1 is conveyed to the top of the take-out table 51. In this state, the endless chain 23a to 1b makes one more revolution, and the next new workpiece 1 prepared on the feed table 53 side is carried in, and the above steps are repeated.

By operating in this manner, the cutting machine table of the present invention can perform each of the above-mentioned operations either manually or automatically.

Fine positioning adjustment is also carried out on the freely rotatable body 138Y as described above, so it can be done easily, easily, reliably, and quickly, and since it does not come into contact with the pincushion 3, it will not be damaged.

Loading and unloading of large and heavy workpieces can be carried out extremely easily, safely and quickly. Furthermore, it is very easy to remove chips, small workpieces, spatter, etc. that have fallen below the pincushion 3.

This invention is not limited to the one embodiment described above, and can be modified and applied in many ways. For example, the elevating mechanism for the group of freely rotating bodies 13 and the elevating and lowering mechanism 39 for the group of slats with fins 37 can employ various mechanisms other than those described above, and it is also possible to simplify the mechanism by using an air cylinder or the like.

In addition, this cutting machine table can be used not only with laser beam cutting machines, but also with gas cutting machines, and even high-pressure water flow machines other than the heat type 1Ji15 type.
It can be conveniently applied to processing machines other than cutting machines, such as I7i machines, and has a very wide range of applications.

``Effects of the Invention'' As is clear from the above, the cutting i + i table of the present invention allows workpieces to be carried in, positioned and adjusted, transferred to the pincushion, and removed from the pincushion after machining very easily, safely, quickly and reliably. Various operations such as picking up, loading, unloading, etc. can be carried out, making it possible to streamline operations and achieve great effects. Furthermore, of course for cutting machines,
It can be widely used as a transport table for other processing machines and is easy to position.

[Brief explanation of the drawing]

FIG. 1 is a schematic perspective view of one embodiment of the cutting table of the present invention, FIG. 2 is an enlarged sectional view of a part of the device shown in FIG. 1, and FIG.
The figure is a plan view of Fig. 2, Fig. 4 is a configuration diagram seen from the front when loading and unloading a workpiece, Fig. 5 is a configuration diagram of Fig. 4 viewed from the side, and Fig. 6 is a configuration diagram when positioning a workpiece. Figure 7 is a configuration diagram of Figure 6 viewed from the side, Figure 8 is a configuration diagram of the state during processing viewed from the front, and Figure 9 is a side view of Figure 8. FIG. Explanation of main drawing symbols 1... Work 3... Pin (seat) 7
...Acicular projection (supporting member with a sharply formed tip) 13...Free rotating body 11...Horizontal shaft 15...Worm reducer 17...Common shaft 19...Gard motor 23a , b... Endless chain 258-h... Sprocket wheel 27... Geared motor 29... First range 31... Flat slat 3
3...Second range 35...Groove-shaped new surface slat 37...Fin 39...Elevating mechanism (i:51.1' Agent Patent attorney Yasuo Miyoshi 1'', Fig. 41, 23a No. Figure 6. Shiba 3a Figure 5 7 (2) 1 !9i 7, =====Nini=

Claims (1)

[Claims] A plate-shaped slat is attached to a part of an endless chain that can be freely circulated, and a groove-shaped slat equipped with a workpiece delivery member is installed to another part of the endless chain that faces the plate-shaped slat attachment area. A supporting member (abbreviated as a needle) for placing a workpiece during processing is fixedly provided above the endless chain installation range, and a plurality of freely rotatable bodies are provided for supporting and moving the workpiece when loading the workpiece. A cutting machine table for thermal cutting, characterized in that it is provided with an elevating mechanism that moves up and down in a range above and below the needle arrangement level.