JPH09182925A - Moving and positioning device of plate stock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable plate stock clamps to drive without depending on ball screws and enable respective plural plate stock clamps to drive independently. SOLUTION: Plural linear motor stators 13 are provided in the longitudinal direction of a carriage base 23 With suitable gaps, and plural plate stock clamps 11 integrated linear motor needles 31 sliding on linear motor stators are moved and positioned in the longitudinal direction of the carriage base 23 with linear motors. In the case of conveying the work W of plate stocks with plural plate clamps 11, plural plate stock clamps 11 are synchronously driven, respective plate stock clamps 11 are independently driven when plate stock clamps 11 enter dead band areas and at the time of repositioning.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a plate material moving / positioning device for moving and positioning a work in a plate material processing machine such as a turret punch press.

[0002]

2. Description of the Related Art A plate material moving / positioning device 101 of a conventional plate material processing machine will be described in detail with reference to FIGS. The plate work W is gripped and fixed by the clamp portion 105 at the tip of the plate clamp 103, and moves in the X-axis direction as the plate clamp 103 moves in the X-axis direction.

In this example, a plurality of plate clamps 103, two in number, are attached to the carriage 107.
The carriage 107 is supported by a guide 109 and moves in the X-axis direction while sliding on the guide 109. The guide 109 is attached to and supported by the carriage base 111.

The ball screw 113 is screwed onto the carriage 107, and the rotation of the ball screw 113 moves the carriage 107 in the X-axis direction. Ball screw 1
13 is rotationally driven by a motor 117 via a power transmission 115. The carriage base 111 is integrated with the side table 119 so that it can be moved in the Y-axis direction.

In FIG. 7, the work W is moved from the position indicated by the solid line to 2
When the plate material clamp 103 moves to the position indicated by the dotted line, the plate material clamp 103 grips the work W to compensate for the shortage of the stroke of the carriage 107 in the X-axis direction. Plate clamp 1
When entering the dead zone 03, the plate clamp 103 is retracted by a dedicated clamp retracting mechanism (not shown).

[0006]

By the way, according to the above-mentioned plate material movement positioning apparatus, the rotational force of the motor 117 is converted into a linear thrust force via the power transmission groove 115, the ball screw 113 and the like. It was done. In this method, a large number of the above-mentioned mechanical elements are required for transmission and conversion of power, the apparatus becomes complicated and large, and power consumption is large and noise is large.

Further, since a plurality of plate material clamps 103 are mounted on one carriage 107 and moved in the X-axis direction, each plate material clamp 103 cannot be driven independently, so that it enters the dead zone. In this case, there is a problem that it is necessary to evacuate with a retracting cylinder or the like, and it is necessary to provide a repositioning cylinder or the like at the time of repositioning to shift the plate material clamp relative to the carriage.

The object of the present invention is not to rely on a ball screw,
It is an object of the present invention to provide a plate material moving / positioning device in which a plate material clamp can be driven by a linear motor and a plurality of plate material clamps can be independently driven.

[0009]

In order to achieve the above object, a plate material moving / positioning device according to the present invention according to claim 1 is provided with a plurality of linear motor stators at appropriate intervals in the longitudinal direction of a carriage base. It is characterized in that a plurality of plate clamps having a built-in linear motor mover that slides on the linear motor stator are moved and positioned in the longitudinal direction of the carriage base by a linear motor.

Therefore, by providing a plurality of plate clamps driven by the linear motor, the mechanism for driving the carriage by the ball screw is not required, the weight of the apparatus is reduced, and the noise caused by the ball screw drive is eliminated.

According to a second aspect of the present invention, there is provided a plate material moving / positioning apparatus according to the first aspect of the present invention, in which the plurality of plate material clamps are synchronously driven when the plurality of plate material clamps are used to clamp and convey the plate materials. As soon as the plate clamp enters the dead zone area,
Each of the plate clamps is independently driven during repositioning.

Therefore, since the plurality of plate clamps driven by the linear motors can be independently driven and synchronously driven, the evacuation from the dead zone and the gripping can be performed without a dedicated mechanism. Easily done.

[0013]

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

Referring to FIG. 4, a plate material processing machine 1 is an example of a turret punch press having a plate material moving / positioning device 3 of the present invention, and a main body frame 5 is erected on a base (not shown). The main body frame 5 is
It is composed of an upper frame 7 above the central opening and a lower frame 9 below the central opening.

The plate material moving / positioning device 3 of the present invention is attached to the lower frame 9 to move and position the work W. A linear motor stator 13 is provided at the bottom of the plate material movement positioning device 3, and the linear motor stator 13 is arranged so as to extend in the direction perpendicular to the drawing of FIG. 4, that is, in the X-axis direction shown in FIG. The plate material clamp 11 which is provided and constitutes the plate material movement positioning device 3 slides on the linear motor stator 13 and moves in the direction perpendicular to the drawing of FIG. 4, that is, in the X-axis direction shown in FIG. It should be noted that the structure shown in FIG. 1 can be moved in the Y-axis direction by a device that further supports them from below.

An electromagnetic work clamp 15 is attached to the plate clamp 11 so that the work W can be gripped and fixed, and can be released. When the work W is moved and positioned, it is gripped and fixed. A work table 17 is widely and horizontally provided on the lower frame 9 to support the work W.

An upper turret 19 is attached to the upper frame 7, and together with the vertically movable ram 21 which is also attached, the upper turret 19 descends together when punching the workpiece W to fix the workpiece W. Perform punching. A lower turret corresponding to the upper turret 19 is provided on the lower frame 9.

Referring to FIG. 1, the carriage base 23
Moves in the Y-axis direction while being fixed to the side table 25. A guide rail 27 extending in the X-axis direction is integrated with the carriage base 23.
All devices for moving the workpiece W in the axial direction are mounted and attached.

The linear motor stator 13 is in close contact with the carriage base 23, extends in parallel with the carriage base 23, extends in the X-axis direction, and is guided by a guide rail 27 to slide.

The plate clamp 11 incorporates a linear motor mover 29. The linear motor mover 29 is attached to the bottom bottom surface of the plate clamp 11.

With reference to FIGS. 2 and 3, the linear motor mover 29 is arranged so as to face the linear motor stator 13, and the magnetic field lines (not shown) pass through both magnetic poles. Have

Referring to FIG. 1, the linear motor mover power supply wire 31 is supplied with a signal current to the linear motor mover 29, and the plate clamp 1 is operated by the linear motor.
1 is moved to a predetermined position and accurately stopped at a predetermined position.

The work clamp 15 is attached to the plate clamp 11.
The work clamp 15 holds the work W by the signal current flowing through the clamp actuating power supply wire 33, and releases the work W held and fixed. Linear motor mover power supply wire 31
The clamp operating power supply wire 33 is housed in a common line (electric wire) 35. The line (electricity) 35 has a caterpillar type outer sheath, and the lines (electricity) 35 connected to the plurality of plate material clamps 11 interfere with each other and can move together with each plate material clamp 11 without being entangled.

FIG. 2 is a perspective view showing the relative positional relationship of the main components of the linear motor. The linear motor mover 29 is arranged on the linear motor stator 13 which extends horizontally, and moves forward and backward linearly on the linear motor stator 13 horizontally along the linear motor stator. . The signal current to the linear motor mover 29 is supplied by the line 35 attached to the linear motor mover 29.

FIG. 3 is a detailed sectional view of the linear motor mover 29 and the linear motor stator 13 arranged so as to face it. A magnetic pole 37 is provided on the upper surface of the linear motor stator 13 so as to be arranged in a comb shape, and a conductor 39 through which a current flows is attached so as to surround the magnetic pole 37.

On the other hand, a linear motor mover 29 is arranged facing the above linear motor stator 13 very closely. The number of the mover main bodies 41 forming the linear motor mover 29 is three in this example, but usually has a plurality of movable magnetic poles 43 to generate a moving magnetic field. Therefore, the movable magnetic pole 43
Is usually made of a laminated structure such as a silicon steel plate and has a small power loss and a small amount of heat generation under a moving magnetic field.

A signal current for exciting the movable magnetic pole 43 is passed through the coil 45. The coil 45 has a structure wound around the movable magnetic pole 43, and a moving magnetic field is generated by the signal current, and a thrust is given to the linear motor mover 29 to drive it. At this time, the pole teeth 4 are provided between the movable magnetic poles 43.
7 is provided to form an efficient magnetic path.

Referring to FIGS. 5 and 1 together, when the work W is clamped and conveyed by the plurality of plate clamps 11, the three plate clamps 11 are synchronously driven to work W.
Is moved to the fixed position in the Y-axis direction.

When the work clamp 15 which is the work W gripping portion of the plate clamp 11 enters the punching position, that is, the so-called dead zone area and the work W is stopped,
In FIG. 5, when the position of the work W is moved from the A position to the B position, when the work W is grasped, that is, when repositioning, the plate clamps 11 are independently driven to move the work from the dead zone. The clamp 15 can be retracted, and the work can be moved to the position B in FIG. 5 by gripping the work.

Further, the linear motor drive type plate material clamp 11 of the present invention has a compact structure and is not attached to a strong carriage to move.
In addition to the case of being composed of the three plate material clamps 11 described in the present embodiment, a large number of plate material clamps 11 can be mounted on one linear motor stator 13 as necessary, so a plate material for processing a large work W It is also applicable to the processing machine 1.

Due to the above-described structure and operation, the plurality of plate material clamps 11 move synchronously when the work W is conveyed and stop at a fixed position, and a large number of plate material clamps 11 according to the weight and size of the work to be processed. It becomes possible to process a large workpiece W by mounting the. Further, when the clamp 15 is retracted when it enters the dead zone region, or when repositioning for gripping, the plate material clamps 11 are easily driven independently.

[0032]

As can be understood from the above description of the embodiments, the plate material moving / positioning device according to the first aspect of the present invention eliminates the need for carriage and makes the plate material processing machine compact and lightweight. it can. Power for driving the carriage is also reduced. Further, since the mechanism for driving the carriage by the ball screw is eliminated, noise can be reduced.

According to the plate material moving / positioning device of the second aspect of the present invention, since it does not move due to the carriage, it is easy to drive the plate material clamping device independently, so that it is dedicated to the evacuation from the dead zone. There is no need for a mechanism, that is, a retracting clamp. Further, the repositioning cylinder for changing the material is not required. Furthermore, since a large number of plate clamps can be mounted, it is possible to process large workpieces.

[Brief description of the drawings]

FIG. 1 is a perspective view of an essential part of an embodiment of a plate material movement positioning apparatus of the present invention.

FIG. 2 is a perspective view illustrating a main part of a linear motor applied to the present invention.

FIG. 3 is a front sectional view showing details of a linear motor mover and a linear motor stator of the present invention.

FIG. 4 is a front view of a plate material processing machine of an embodiment for carrying out the plate material movement positioning apparatus of the present invention.

FIG. 5 is a plan view of the plate material movement positioning apparatus of the present invention.

FIG. 6 is a perspective view of a conventional plate material movement positioning device.

FIG. 7 is a plan view of a conventional plate material movement positioning device.

[Explanation of symbols]

 3 Plate Material Moving Positioning Device 5 Body Frame 11 Plate Material Clamp 13 Linear Motor Stator 15 Work Clamp 23 Carriage Base 31 Linear Motor Mover 33 Linear Motor Mover Power Wire 35 Clamp Actuating Power Wire 37 Circuit (Electronic) W Work

Claims (2)

[Claims] 1. A linear motor having a plurality of linear motor stators provided at appropriate intervals in the longitudinal direction of a carriage base and having a plurality of plate material clamps incorporating a linear motor mover sliding on the linear motor stator. A moving and positioning device for a plate material, characterized in that it is moved and positioned in the longitudinal direction of the carriage base. 2. When the plate materials are clamped and conveyed by the plurality of plate material clamps, the plurality of plate material clamps are synchronously driven, and when the plate material clamps enter a dead zone region or at the time of repositioning, the respective plate material clamps are driven. 2. The plate material moving / positioning device according to claim 1, wherein each of them is independently driven.