JPH0120016Y2 - - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a material pulling device used to pull and position a workpiece to a predetermined position relative to a material clamper of a processing machine such as an NC punch press.

Conventionally, for example, turret punch presses have been known to have a built-in material positioning device. A magnetic roller is attached to a side table, the workpiece is carried into the material processing section of the processing machine, the workpiece is attracted to a magnetic holder connected to a cylinder, and the cylinder is activated to position the workpiece. It was a matter of composition. However, in the case of such conventional material positioning devices, the installation location of the device is fixed, and appropriate operation according to the size of the material is not possible. There was also the problem that it could not be used for non-magnetic materials because it held the material.

This idea was made in view of the conventional problems mentioned above, and it is possible to grasp the workpiece at the optimal position and pull it into the material clamp, regardless of the material of the workpiece or the size of the workpiece. The purpose of this invention is to provide a material pulling device that can do the following.

The embodiment shown in the figures will be explained in detail below. 1st
The figure shows the entire turret punch press 1 used in one embodiment of this invention. A large number of impact type punch dies 5 are attached to the upper turret 3, and dies 9 corresponding to each of the punch dies 5 are attached to the lower turret 7. The upper and lower turrets 3 and 7 rotate to bring and position a desired pair of punch molds 5 and dies 9 directly below the striking element 11.

A desired processing part of the workpiece W gripped by the material clamper 13 is moved by moving the carriage 15 to which the material clamper 13 is attached in the front-rear direction and moving the carriage base 17 to which the carriage 15 is attached in the left-right direction. In combination with this, it is brought directly under the striking element 11 and positioned between the punch die 5 and the die 9.

In this turret punch press 1, after the above-mentioned positioning of the pair of punch die 5 and die 9 and positioning of the processing part of the workpiece W, the striking element 11 strikes the punch die 5. Punching is performed in a desired shape according to the set of dies 9.

A material pulling device 1 according to an embodiment of this invention used in such a turret punch press 1
9 is shown in detail in Figures 2 and below. This material pulling device 19 is composed of a device base 21, a rotating cylinder 23, a material pulling cylinder 25, and a material clamping member 27.
It is installed between 3 and 13. and device base 2
1 is the carriage 1 in the same way as the material clamper 13.
5 is attached to a bulging attachment protrusion 29, and its attachment position can be changed by loosening the fastening member 33 by operating the handle 31. Further, both the rotating cylinder 23 and the material drawing cylinder 25 are rotatably attached to the device base 21 using, for example, a clevis cylinder. The tip of the piston 35 of the rotating cylinder 23 is rotatably connected to the body of the material drawing cylinder 25.

The material clamping member 27 is divided into a connecting part 37 and a clamping part 39. The connecting portion 37 is connected to the piston 41 of the material drawing cylinder 25. The clamp section 39 is a device similar to the material clamper 13, and can clamp the workpiece W by holding it in its mouth from above and below.
7 by a hinge 43. Furthermore, a compression spring is installed between the connecting portion 37 and the clamping portion 39 in order to always keep the two sides of the workpiece W to be clamped parallel to the material positioning reference line (X-axis direction and Y-axis direction in FIG. 2). 45 are provided,
A clockwise rotational force is applied to the clamp portion 39 about the hinge 43 in FIG. Further, as shown in detail in FIGS. 4 and 5, a clamp portion 39 is provided on the front surface of this connecting portion 37.
comes into contact with the clamp portion 39 of the carriage 15.
A cam surface 47 is formed in order to always be at right angles to the surface.

In addition, in order to detect the abutment of the workpiece W, the locate pin 49 and the abutment surface 51 of the material clamper 13 are used.
A sensor 53 is installed.

The operation of the material pulling device 19 having the above configuration will be described next. At the stage when the workpiece W is carried onto the table surface of the material processing section, the material clamping member 27 is pushed out by the pulling cylinder 25. At this time, the material clamp section 39 is in an open state. Piston 4 of cylinder 25 for drawing material
1 is pushed out to the maximum extent, the clamp portion 39 of the material clamping member 27 closes and clamps the workpiece W.

Next, the material drawing cylinder 25 is connected to the piston 4
1 and pull the material clamping member 27. At the same time, the rotating cylinder 23 is driven, and the material drawing cylinder 25 is rotated counterclockwise in FIG. 2. At this time, the compression spring 45
Therefore, the clamp part 39 opens clockwise relative to the connecting part 37 as shown in FIG. 5, and the workpiece W is moved while being maintained parallel to the X and Y directions in FIG. Eventually, the workpiece W hits the locate pin 49 and is pressed against the clamp abutment surface 51. When the end face of the workpiece hits the locate pin 49 and the material abutment surface 51, the abutment sensor 53 detects the workpiece W, and the material clamper 13 is closed to finally clamp the workpiece.

In this way, the material clamper 13
is completely clamped, the material clamping member 2
The clamp portion 39 of No. 7 is opened to release the workpiece W. The rotating cylinder 23 is further driven to rotate the material drawing cylinder 25, so that the material clamping member 27 is housed outside the processing range of the processing machine, as shown in FIG.

In this example, two material clampers 1
Since the material pulling device 19 is provided between 3 and 13, the mounting position can be changed according to the size of the workpiece W, and the material pulling device 19 can be installed so as to pull almost the center of the workpiece W. Settings can be made and material pulling can be carried out accurately.

As can be understood from the above description of the embodiments, the gist of the present invention is as stated in the claims for utility model registration. An apparatus base 21 is installed between the plurality of material clampers 13 installed on the carriage 15 so as to be freely adjustable in position. A material clamping member 27 is swingably attached to a connecting portion 37 provided at the tip.

Therefore, in the present invention, the position of the material clamping member 27 can be adjusted according to the size of the workpiece W, etc., and the material clamping member 27 can be adjusted to an optimal position, for example, near the center of the workpiece W. It can be clamped. In addition, when the workpiece W is brought into contact with the plurality of material clampers 13 by the pulling operation and swinging action of the material pulling cylinder 25, even if the workpiece W is tilted, the material clamping By horizontally swinging the member 27, the workpiece W can be accurately brought into contact with each material clamper 13. Furthermore, by greatly swinging the material pulling cylinder 25,
It can be separated from the workpiece W clamped by the material clamper 13, and will not become a hindrance during processing.

[Brief explanation of the drawing]

Fig. 1 is a front view of a turret punch press used in one embodiment of this invention, Fig. 2 is a plan view of the material clamper attachment part of the same embodiment, and Fig. 3 is a front view of the same embodiment. FIG. 4 is an enlarged plan view of the material clamping member of the embodiment, FIG. 5 is a plan view illustrating the operation of the material clamping member, and FIG. 6 is a plan view illustrating the operation of the embodiment. DESCRIPTION OF SYMBOLS 1... Turret punch press, 13... Material clamper, 15... Carriage, 17... Carriage base, 19... Material pulling device, 21... Device base, 23... Rotating cylinder, 25... Material pulling cylinder, 27... material clamping member,
29... Mounting protrusion, 35... Piston, 37...
...Connecting part, 39... Clamp part, 41... Piston, 43... Hinge, 45... Compression spring, 47...
...cam face.

Claims (1)

[Scope of utility model registration request] The carriage 15 is moved between the plurality of material clampers 13 attached to the carriage 15 in the processing machine.
A mounting base 21 is mounted and provided in a position adjustable manner,
A material drawing cylinder 25 for drawing the workpiece W on the table of the processing machine to the material clamper 13 is horizontally swingably mounted on the device base 21, and the material drawing cylinder 25 is also swung. A piston rod 4 that can freely reciprocate the material drawing cylinder 25 is provided.
A material clamping member 27 that can freely clamp the workpiece W is attached to the connecting portion 37 provided at the tip of the connecting member 3 so as to be able to swing horizontally.
7 to the material clamping member 27 to the elastic member 45
1. A material pulling device which is held in a predetermined posture by a material pulling device.