JPS599800Y2 - machine tool cover - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a cover for a machine tool.

A cover that partitions a pallet or a workpiece conveyance path of a machine tool such as a machining center or a transfer machine must be opened and closed when the pallet is conveyed.

Conventionally, the opening and closing of the cover that partitions the pallet loading/unloading section is as follows:
There is a method of opening and closing the cover left and right with respect to the pallet loading/unloading direction, or opening and closing the cover up and down.

However, in the former case, the width of the cover must be widened in order to secure the processing area, etc., and when the cover is opened,
This had the disadvantage that the cover was placed on the operation side of the machine, making it difficult to operate the machine.

Further, in the latter case, pillars and guides are provided at the four corners so that the cover can be opened and closed up and down, and the cover must be made somewhat sturdy, resulting in a disadvantage that it becomes expensive.

Furthermore, as a related drawback, since the cover opens during pallet transportation, there is a problem that the coolant being discharged from the main shaft side will be scattered outside the machine unless it is stopped by switching a solenoid valve or the like.

The present invention eliminates these drawbacks, and the first
The object of the present invention is to provide a cover that is simple in structure and inexpensive, since the opening and closing operations of the cover can be performed simultaneously at both the pallet loading and unloading ports using one driving source.

In addition, the second purpose is when loading pallets,
Since the machine spindle side of the machining area can be partitioned at the same time as the partition cover on the transport path side is opened, the coolant does not scatter outside the machine even if it is discharged, eliminating the need for a solenoid valve to switch the coolant discharge. It is in.

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a side view of the cover seen from the pallet loading side, showing a state in which the conveyance path is partitioned by a movable partition cover 2.

FIG. 2 is a cross-sectional view taken along the line B-B in FIG.
The area around the area is completely partitioned with a cover, indicating a sealed state.

When the movable partition cover 2 is viewed from above as shown in FIG. 3, the drive source that drives the movable partition cover is as follows.
Each beam 18 extends from the top of the fixed cover 5 on both sides.
, 19 on the base 11.

Further, as shown in FIG. 4, the U-shaped movable partition cover is oriented with the open side of the movable partition cover facing downward.

A shaft 15 is fixed to the center of the roof of the cover with bolts to a flange portion provided on the shaft 15 so as to be perpendicular to the floor surface.

Further, a small diameter portion of the housing 21 is inserted into a hole provided in the center of the base, and the humiding 21
A flange portion provided on the base 11 is fixed on the base 11 with bolts.

The shaft 15 is connected to the housing 2 mounted on the base 11.
It is rotatably supported via bearings 16 and 17 provided at 1.

Further, the upper part of the shaft 15 is integrally fixed to the arm 6.

On the other hand, a bracket 10 is mounted on the base 11, and the cylinder 8 is pivotally attached to the bracket 12 by a pin 9 and a bracket 12 provided on the side opposite to the piston rod side of the cylinder.

Further, a bracket 14 is screwed into a threaded portion cut at the tip of the piston rod of the cylinder 8 so that the longitudinal direction of the piston rod can be adjusted.

The bracket 14 is pivotably attached to one end of the arm 6 with a pin 13.

Further, at the other end of the arm 6, within the rotation plane of the arm,
A bolt 20 is attached to the arm so as to be adjustable at right angles, and the actuator of the limit switch 7a is set at the end of the bolt 20 in an ON state, and is attached to the base.

Further, a limit switch 7b is provided on the same base 11 and opposite to the limit switch 7a at a position 90 degrees away from the limit switch 7a on the swing locus of the arm.

The present invention has the structure described above and operates as described below.

That is, the movable partition cover 2 that partitions the pallet conveyance path operates in the same way as the arm 6 that is integrally attached via the shaft 15.

In other words, it is an electrical sign that the machine has completed a series of machining operations, and the cylinder 8 is activated by switching a solenoid valve (not shown).
When the piston moves forward due to fluid pressure, the arm 6 moves to the third position.
Turn <90 degrees as shown by the two-dot chain line in the figure.

At the same time, the cover 2 also rotates 90 degrees.

Then, at the same time as the pallet conveyance path is opened, the main shaft side of the machine is partitioned off by the partition cover.

At this time, when the bolt 20 provided at one end of the arm 6 steps on the actuator of the limit switch 7b and issues an ON signal, conveyance of the pallet begins.

Therefore, since the main shaft side is partitioned by the partition cover, the coolant being discharged will not be scattered outside the machine even while the pallet is being conveyed.

Next, when the conveyance of the pallet 3 is completed and the workpiece placed on the pallet is conveyed again to a predetermined processing position, the piston rod of the cylinder 8 operated by the fluid pressure provided on the base 11 is activated. Due to the backward movement, the arm 6 pivots about the shaft 15 in the same direction as the clock hands.

Therefore, when the entrance and exit of the conveyance path is partitioned off by the partition cover by the rotation of the arm, the bolt 20 provided at one end of the arm depresses the actuator of the limit switch 7a, and the machining operation of the machine is stopped by the signal of the limit switch 7a. Start.

Note that FIG. 5 shows a case where there is only one communication port. As stated above, the present invention is not limited to the configuration shown in the examples, and modifications are expected within the scope of the technical idea of the present invention as described in the claims. .

[Brief explanation of drawings]

FIG. 1 is a side view of the cover seen from the pallet loading side. FIG. 2 is a sectional view taken along the line BB in FIG. 1. 3 is a view in the direction of arrow A in FIG. 1, and FIG. 4 is a view in the direction of arrow C in FIG. FIG. 5 shows another embodiment. In the figure, 1...
・Machine body, 2...Movable partition recoverer 3.
...Pallet, 4,5...Fixing force bar,
6... Arm, 7a, 7b... Limit switch, 8... Cylinder, 11...
・Base, 15... Axis, 16, 17...
...Axis, 18, 19...Beam, 20...
・Bolt, 21...Housing.

Claims (1)

[Scope of utility model registration request] In a machine tool that has a setup station located near the machining area for intermittent unloading of workpieces,
an unloader device that connects the setup station and a machining area of a machine tool; a fixed cover that covers the machining area including the main shaft end of the machine tool and has an opening only at a workpiece loading/unloading path that connects the setup station; The fixed cover is suspended from a pivot provided at the upper center of the fixed cover, and is pivotable about the pivot between a first and second angular position, and in the first angular position, the fixed cover is The opening coincides with the opening and closes on the spindle side, and at the same time serves as a communication port between the machining area and the setup station, and at a second angular position, has an opening that serves as a communication port toward the spindle side within the machining area of the machine tool. Power bar and cover for certain machine tools