JPH0321764Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a machine tool operating panel suspension device that allows the operating position and direction of the operating panel to be easily changed.

In general, when operating a machine tool, an operator is required to operate an operation panel near the working position, and there is a need to change the operating position and operating direction. This is especially necessary for machine tools such as press brakes that have a wide working range.

From the viewpoint of operability, it is desirable that the operating panel hanging device that meets the above-mentioned needs be able to easily change the operating position and operating direction of the operating panel by an operator's one-handed operation. In addition, it is necessary to have a safe design so that it will not move under external conditions such as factory vibrations, and will not be damaged even if the material being worked on accidentally comes into contact with it.

The present invention was developed in response to the above-mentioned need, and it is an object of the present invention to provide an operation panel suspension device for a machine tool that can easily change the operation position and operation direction of the operation panel of the machine tool according to the operator's request. purpose.

Hereinafter, the present invention will be described in detail with reference to one embodiment.

FIG. 1 shows a perspective view of a press brake equipped with an operation panel hanging device. The press brake 1 has an upper frame 3 and a lower ram 5, and bends a plate between an upper die 7 attached below the upper frame 3 and a lower die 9 attached above the ram 5. It is. An operation panel 15 is attached to the control panel 11, which is fixed to the machine body, via an operation panel suspension device 13, and
A foot pedal device 19 is provided via a cable 17. An operator stands in front of the press brake 1 and performs the work of bending the plate material. In this example, the movement command of the ram 5 is sent to the foot petal device 19.
The operation panel 15 is used to operate the power supply, set the upper and lower limits of the ram 5, set the movement mode of the ram 5, change the speed, and command the position. Note that the operation panel 15 is also equipped with a display that displays the set upper limit position, etc.

FIG. 2 shows a plan view of the operation panel hanging device, and FIG. 3 shows a side view. The operation panel hanging device 13 includes an arm 23 that is rotatable in a horizontal plane on a column 21, and the operation panel 1 is attached to the tip of the arm via a joint 25.
5, and the joint portion 25 is provided with a resistance device 27 that allows the operation panel 15 to rotate around a vertical axis and provides resistance to the rotation. Figure 2 shows the main movement positions AP1, AP2, AP3 of the arm 23.
It shows. The operation panel 15 is rotatable so that the front face faces the operator at each movement position of the arm 23. As shown in the operation panel 15 of FIG. 1, a handle is provided on the side of the operation panel so that the operator operation panel 15 can be easily rotated with one hand. In addition, pillar 2
The rotational resistance between the operation panel 15 and the arm 23 is
It is preferable that the turning moment be made larger than the turning moment given to the arm 23 by one-handed operation.

The operator can easily turn the arm 23 to a desired position, and can also easily move it in a desired direction with one hand. Also, the joint part 25
Since the resistor device 27 is provided in the holder, it will not move arbitrarily due to external conditions such as factory vibrations.

FIG. 4 shows a detailed enlarged view of FIG. 3. Fifth
6 and 7 are enlarged views of the -, - and - sectional views of FIG. 4, respectively. The so-called click stop device 29 is constructed using a ball plunger 39. The support column 21 is composed of an outer cylinder 31 that stands upright with respect to the control panel 11 and an inner cylinder 33 that is a pivot axis of the arm 23. The inner cylinder 33 is connected to the outer cylinder 3
1 through dry bearings 35, 35. A vertical groove 3 is formed on the outer peripheral surface of the inner cylinder 33.
7 is carved, and the outer cylinder 31 is provided with a ball plunger 39 whose tip abuts against the vertical groove 37 in a freely engaging and detachable manner. Reference numeral 40 indicates a cavity through which the signal wire passes.

The click stop device 29 allows the arm 23 to be lightly locked at any angle, and will not be moved due to external conditions such as factory vibrations. Furthermore, the arm 23 does not pivot due to the pivoting moment caused by a one-handed rotation operation for changing the direction of the operation panel 15.

The resistance device 27 includes an inner cylinder 45 having two grooves 41 and 43 on its outer periphery, and an outer cylinder 51 having a fitting hole 49 facing the grooves 41 and 43 and into which a sphere 47 is inserted.
and a sleeve 53 that slides into contact with the outer periphery of the outer cylinder 51. Note that a small recess is provided in the groove 41 provided in the inner cylinder 45, and the movement angle of the sphere 47 is regulated by a stop ball 55. There are 2 grooves on the inner cylinder.
Although an example has been shown in which the restriction angle by the stop ball is 180°, it goes without saying that the number of grooves, the number of spheres, and the restriction angle can be changed freely in order to adjust the frictional resistance.

Due to the resistance device 27, the rotation of the operation panel 15 is subjected to an appropriate resistance force against the arm 23, and it is possible to prevent excessive rotation or arbitrary rotation due to factory vibration or the like. Note that the assembly work of the resistance device 27 is easy. That is, the stop ball 55 is inserted into a small recess provided in the groove 41 of the inner cylinder 45, the outer cylinder 51 is aligned with the inner cylinder 45, the plurality of spheres are inserted through the insertion holes 49, and the sleeve 53 is placed on top. .

A flexible pipe 57 having appropriate bending characteristics is provided between the resistance device 27 and the operation panel 15 via joints J1 and J2. The flexible pipe 57 allows the operation panel 15 to swing in the horizontal direction without expanding or contracting in the vertical direction. By attaching the joint J1 or J2, the operation panel 15 can be easily attached or detached. Even if the plate material hits the operation panel 15 by mistake, the impact can be absorbed by the flexible pipe, so the plate material or the operation panel will not be damaged and it is safe.

As can be understood from the above description of the embodiments, the gist of the present invention is essentially as stated in the claims of the utility model registration. As is clear from the description, in the support column 21 installed in the frame, the outer cylinder 31 is provided with a ball plunger 39 whose tip can be freely engaged and detached from a plurality of vertical grooves 37 formed on the outer peripheral surface of the inner cylinder 33. There is. Therefore, when the arm 23 having the operation panel 15 at its tip is rotated, the outer cylinder 31 and the inner cylinder 33 rotate relative to each other, and the tip of the ball plunger 39 is placed in the vertical groove 37 at an arbitrary position. When engaged, the relative positional relationship between the outer cylinder 31 and the inner cylinder 33 is maintained constant unless a large external force is applied.

In addition, in the present invention, as a configuration in which the operation panel 15 is suspended from the tip of the arm 23, the outer cylinder 51 provided at the upper end of the flexible pipe 57, which has the operation panel 15 at the lower end, is attached to the tip of the arm 23. The ball 47 is fitted into the inner cylinder 45 which is vertically installed in the inner cylinder 45, and the ball 47 provided in the fitting hole 49 of the outer cylinder 51 is engaged with the grooves 41 and 43 formed in the inner cylinder 45. The outer cylinder 51 is vertically supported by the inner cylinder 45. Therefore, when rotating the outer cylinder 51 with respect to the inner cylinder 45 in order to correct the directionality of the operation panel 15, the sphere 47 is rotated between the inner cylinder 45 and the outer cylinder 51.
is not a rolling contact but a sliding contact. That is, there is a relatively large sliding friction between the inner cylinder 45 and the outer cylinder 51, which restricts the operation panel 15 from freely rotating, and it is easy to rotate the operation panel 15 after correcting its direction. It is not something that rotates.

That is, in the present invention, the rotation of the arm 23 with respect to the frame uses a so-called click stop mechanism to maintain a fixed position unless a large external force is applied, and the rotation of the operation panel 15 with respect to the arm 23 is restricted. Since the configuration is such that the operation is performed with relatively high abrasion resistance, there is no possibility that the arm 23 will rotate relative to the frame when attempting to rotate the operation panel 15 relative to the arm 23 to correct the directionality. This improves operability when the operator positions the machine tool at a predetermined position and performs the operation. Also, arm 2 is attached to the frame.
3 is easy to rotate, and the operation panel is easy to position.

Note that the present invention is not limited to the above-mentioned embodiments, but can be implemented in other embodiments by making appropriate design changes.

[Brief explanation of the drawing]

The drawings all show embodiments of the present invention; Fig. 1 is a perspective view of a press brake equipped with an operation panel suspension device, Fig. 2 is a plan view of the operation panel suspension device, and Fig. 3 is a perspective view of a press brake equipped with an operation panel suspension device. 4 is an enlarged side view showing the details of FIG. 3 in partial cross section; FIGS. 5 and 6 are side views of the lower device;
Figures 7 and 7 are -, -, and Figure 4, respectively.
- Shows an enlarged sectional view in the direction of arrows. 13...Operation panel hanging device, 15...Operation panel, 2
1... Support column, 23... Arm, 25... Joint part,
27...Resistance device, 29...Click stop device, 57...Flexible pipe.

Claims (1)

[Scope of claim for utility model registration] Post 21 installed on the frame of a machine tool
A flexible pipe 57 rotatably supports the base end of the arm 23 horizontally, and is vertically rotatably mounted on the distal end of the arm 23 via a resistance device 27.
The operation panel hanging device has an operation panel 15 attached to the lower end of the control panel, and the support column 21 has an inner tube 33 rotatably fitted into an outer tube 31 and is formed on the outer peripheral surface of the inner tube 33. A ball plunger 39 whose tip end can be freely engaged and detached from a plurality of vertical grooves 37 is provided in the outer cylinder 31, one of the outer cylinder 31 or the inner cylinder 33 is fixed to the frame, and the other is integrally fixed to the base end of the arm 23. The resistance device 27 is constructed by fitting the inner cylinder 45 vertically attached to the tip of the arm 23 into the outer cylinder 51 attached to the upper end of the flexible pipe 57, and inserting the insertion holes provided at a plurality of locations in the outer cylinder 51. Sphere 4 inserted into 49
7 is engaged with a plurality of grooves 41 and 43 formed in the outer cylinder 51 of the inner cylinder 45, and the outer cylinder 51 is rotatably suspended relative to the inner cylinder 45, thereby preventing the sphere 47 from falling off. A sleeve 53 for preventing the rotation is fitted on the outer periphery of the outer cylinder 51, and a stop ball 55 for restricting the range of rotation of the outer cylinder 51 with respect to the inner cylinder 45 by coming into contact with the sphere 47 is inserted into the groove of the inner cylinder 45. An operation panel hanging device for a machine tool, characterized in that it is fixed to a 41.