JPH0344386Y2 - - Google Patents

Description

[Detailed explanation of the invention] [Purpose of the invention] (Field of industrial application) The invention consists of a punch press machine that punches a plate-shaped workpiece, and a thermal cutting machine that performs fusing using laser processing or plasma jet. This invention relates to a multi-purpose processing machine that is combined with a processing machine.

(Prior art) Multi-purpose processing machines that combine a punching machine and a thermal cutting machine such as a laser processing machine or a plasma jet processing machine do not perform punching and thermal cutting at the same time; During processing, the thermal cutting machine is in a resting state, and conversely, during the thermal cutting processing, the punching processing machine is in a resting state.

Therefore, the multi-tasking machine is equipped with a thermal cutting head that is movable up and down in order to maintain the thermal cutting head in an elevated state during punching.

(Problem to be solved by the invention) Conventionally, the configuration for vertically moving the thermal cutting head in a multi-tasking machine is a screw mechanism using a ball screw or the like or a rack and pinion, so an expensive drive motor is required. In addition, a mechanism is required to prevent the device from descending due to its own weight, which increases manufacturing costs and complicates the configuration.
Moreover, it is difficult to raise the thermal cutting head even with a slight external force.

Conventionally, a contact sensor or the like is provided around the thermal cutting head, and when a workpiece, work clamp, etc. comes into contact with the thermal cutting head, the contact sensor is activated to prevent the movement of the workpiece, etc. A configuration has been adopted to stop it. Therefore, there is a problem that, for example, the work clamp does not stop the moment it comes into contact with the thermal cutting head, but the thermal cutting head may be damaged by the inertia of the work clamp.

The present invention has been made in view of the conventional problems as described above.

[Structure of the idea]

(Means for solving the problems) In order to solve the conventional problems as mentioned above,
The present invention has a thermal cutting head that is movable up and down and is installed close to a mold holder that supports a punch and a die for punching a plate-shaped workpiece, and has multiple stages that move the processing head up and down. A fluid pressure cylinder is provided, and an elastic member is provided to support the processing head when the processing head is in the lowered position, and an upward component force acts on the lower part of the processing head when the workpiece comes into contact with the processing head. It is equipped with an inclined part.

(Operation) In the above configuration, the thermal cutting head is moved up and down by operating the plurality of stages of fluid pressure cylinders. In addition, in the lowered position of the thermal cutting head, it is supported by an elastic member, so if even a slight upward force is applied, the thermal cutting head will be easily raised by the action of the elastic member. .
The lower part of the thermal cutting head is equipped with an inclined part that applies an upward component of force when a workpiece, etc. comes into contact with it, so when a workpiece, etc. comes into contact with it, it is immediately raised, and the thermal cutting head is heated. The processing head will be protected.

(Example) As schematically shown in a plan view in FIG. 1, a multi-tasking machine 1 implementing the present invention supports a punch and a die (not shown) for punching a plate-shaped workpiece W. The punch press 5 is basically a turret punch press 5 which is rotatably provided with a turret 3 as a mold holder.

The tallest punch press 5 has a gate-shaped frame 7.
It also includes a work table 9 that supports the workpiece W, and a moving positioning device 11 that moves and positions the workpiece W in the X-axis direction and the Y-axis direction. This moving positioning device 11 is equipped with a work clamp 13 that can freely grip a work piece W. Incidentally, since the turret punch press 5 having the above configuration is well known, a more detailed explanation will be omitted.

At a position close to the punching position P in the turret punch press 5, there is provided a thermal cutting position C where the workpiece W is thermally cut using a laser beam or a plasma jet. In this embodiment, the punching position P and the thermal cutting position C are shown separated in the left-right direction in FIG. 1, but they may be arranged in any direction.

Referring to FIG. 2, a thermal cutting head 15 such as a plasma processing head or a laser processing head is provided at the thermal cutting position C so as to be movable up and down. That is, the frame 7 is provided with a vertical guide 17, and the thermal cutting head 15 is vertically guided and supported on this guide 17.

In order to move the thermal cutting head 15 up and down, the frame 7 is provided with multiple stages of fluid pressure cylinders 19.
is provided. More specifically, the fluid pressure cylinder 19 includes a first cylinder 21 with a large stroke length and a second cylinder 23 with a small stroke length.
The upper end of the first piston rod 25, which projects upward from the first cylinder 21, is fixed to the frame 7 as appropriate. Further, a second piston rod 27 protruding downward from the second cylinder 23 is connected to the thermal cutting head 15.

Therefore, the first control switching valve 29 that controls the supply and discharge of the working fluid to the first cylinder 21 and the second control switching valve 31 that controls the supply and discharge of the working fluid to the second cylinder 23 are moved to positions A and 1, respectively. By appropriately switching between B and C, the thermal cutting head 15 can be moved up and down largely or slightly. Also,
When the thermal cutting head 15 is in a lowered state,
The first and second cylinders 21 and 23 can be maintained in a state open to atmospheric pressure, making it possible to raise the thermal cutting head 15 by applying an external force.

The internal structure of the thermal cutting head 15 is similar to that of a general processing head, but in this embodiment, the thermal cutting head 15 has locking portions 33 provided on the frame 7 at appropriate positions. A stopper 35 that can be freely contacted is provided. Further, the thermal cutting head 15 has a support portion 4 supported by an elastic member 39 such as a coil spring supported by a spring seat 37 provided on the frame 7.
1 is provided.

The elastic member 39 supports the thermal cutting head 15 by being elastically mounted between the spring seat 37 and the support portion 41 when the thermal cutting head 15 is lowered to its lowest position. . Therefore, the thermal cutting head 15 is always urged upward by the elastic member 39 at the lowest position, and easily rises when a slight upward external force is applied. .

Further, at the bottom of the thermal cutting head 15,
An inclined portion 4 on which an upward component force acts when the workpiece W or the work clamp 13 comes into contact with it.
3 is formed.

In the above configuration, the first control switching valve 2
9 to the C position and the second control switching valve 31 to the C position, the first cylinder 21 is raised and the thermal cutting head 15 is also raised.
That is, the thermal cutting head 15 is positioned at the highest position. Therefore, the thermal cutting head 1
5 and the work clamp 13, etc., and there is no risk of interference during punching.

When the first and second control switching valves 29 and 31 are both switched to position A to perform thermal cutting when the thermal cutting head 15 is in the highest position, the first cylinder 21 and the thermal cutting Processing head 1
5 will be the lowest. Then, when both the first and second control switching valves 29 and 31 are switched to the neutral position B, the first and second cylinders 21 and 23 are both opened to atmospheric pressure.

As mentioned above, when the thermal cutting head 15 is in the lowest position, the stopper 35 is attached to the locking portion 3.
3 and is supported by an elastic member 39. Therefore, the thermal cutting head 1
When the workpiece clamp 13 or the workpiece W is lowered to the lowest position and thermal cutting is possible,
When it comes into contact with the inclined portion 43 of the thermal cutting head 15, an upward component of force acts, and the thermal cutting head 15 is easily raised to prevent damage.

As described above, when the second control switching valve 31 is switched to the C position when the thermal cutting head 15 is at the lowest position, the thermal cutting head 15 is raised by a slight stroke of the second cylinder 23. Therefore, when moving the workpiece W to change the thermal cutting position, the workpiece W can be moved quickly.

(Effects of the invention) As can be understood from the above description of the embodiments, the gist of the invention is as stated in the claims for utility model registration, so according to the invention,
Even with a simple configuration, the thermal cutting head can be moved up and down, and when it comes into contact with a workpiece or work clamp, the thermal cutting head can be easily raised by an upward component of force, which prevents collisions. can prevent damage caused by

[Brief explanation of the drawing]

FIG. 1 is a plan view schematically showing an apparatus embodying the present invention, and FIG. 2 is a schematic explanatory view corresponding to the direction of the arrow in FIG. 3...turret, 15...thermal cutting head,
21...first cylinder, 23...second cylinder,
39...Elastic member, 43...Slope portion.

Claims (1)

[Scope of utility model registration request] A thermal cutting head is installed in close proximity to a mold holder that supports a punch and die for punching a plate-shaped workpiece, and is movable up and down, and a multi-stage fluid pressure cylinder moves the processing head up and down. An elastic member is provided to support the processing head when the processing head is in the lowered position, and an inclined portion is provided at the lower part of the processing head to which an upward force is applied when the workpiece comes into contact with the processing head. A multi-purpose punching/thermal cutting processing machine.