JPH032569B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a long material punching device mainly used for punching long materials such as angle iron.

In this kind of long material processing line, for example, as shown in FIG. 1, an input conveyor 2 and an output conveyor 3 are arranged in a straight line with a processing station 1 in between, and the long materials are handled by a material feeding device 4 attached to the input conveyor 2. is sent to the processing station 1, first engraved by a stamping machine 5, then punched in sequence by a Z-axis punching device 6 and a Y-axis punching device 7.
The paper is cut and transported by the transport conveyor 3.

An example of the punching device will be described with reference to FIGS. 2 and 3. A punch cylinder 11 is vertically installed downward on the upper arm 10 of the main body 9, and a cylinder rod 12 of the punch cylinder is arranged so as to be movable up and down the main body 9. Installed block 13. A plurality of punch rods 16 are suspended in one row in the material feeding direction on this block, and the punch rods 16 engage the lower part 14 of the block at the top flange 15. A punch 20 is attached to a punch adapter 19 at the lower end of the punch rod 16 to face a die 22 of a die holder 21, and the punch rod 16 is supported at the middle by a bearing part 18 of an intermediate arm 17 projecting from the main body 9. On the other hand, block 1
3, an axis selection cylinder 23 is provided for each punch rod 16, and a selection block 25 fixed to the tip of the piston rod 24 is connected to the lower part of the block 1.
The punch rod 1 is located within the space 27 formed between the punch rod 4 and the block upper part 26 and is used for punching.
6 is placed on the punch rod 16 as shown. Therefore, when the cylinder rod 12 is stroked, the punch thrust is transmitted only to the punch rod 16 to be used through the select block 25, thereby punching out the material. However, this conventional device had the following drawbacks.

Since the block 13 arranges the punch rods 16 in the material feed direction, the width of the main body 9 increases as the number of shafts increases. Further, since a large bending moment is applied to the punch rod 16 which is deviated from the axis of the punch cylinder 11 during punching, it is necessary to increase the size of the device to withstand this. Further, as the punch rod 16 is subjected to a large bending moment, as it moves up and down, the bearing portion 18 wears unevenly, causing the punch rod to tilt, resulting in accidents such as breakage of the punch.

The conventional device shown in FIGS. 4 and 5 has a main body 30
A punch-die set 32 is mounted on the bed 31 so as to be movable in the material feeding direction, and a plurality of pairs of hole-drilling tools each consisting of a punch rod 33 and a die 22 are arranged in a row in the material feeding direction in this punch-die set. At the same time, a T-slot 37 of the cylinder rod 36 of the punch cylinder 11 vertically disposed downward in the central upper arm 35 of the main body 30 and a T-slot 39 of the holder 38 protruding from the main body 30 to both sides of the cylinder rod 36 form a T-slot 39 at the top of the punch rod 33. Tsuba part 34
Guide and support. Then, the punch rod 33 to be used is inserted into the T-groove 37 of the cylinder rod 36 by the punch rod selection drive device 40, and then the punch cylinder 11 is operated to punch out the material.

In this conventional device, the punch rod 33 used
Since it is located within the cylinder rod 36, the bending moment during punching is small and the related parts can be made smaller. However, since the punch rods 33 are arranged in one row on the left and right, there is a drawback that the width of the punch die set 32 and the main body 30 that supports it increases as the number of axes increases. Additionally, the arm length of the material feeding device 4 and the processing station 1 become longer. Furthermore, since the U-shaped main body 30 is provided with a guide bar 41 for guiding the punch die set 32 in the middle, the punch die set 32 connected to this guide bar 41 can be bent due to the deflection of the main body 30 during punching (as shown by the dashed line). Inclination has a negative effect on punching.

In addition, as other conventional techniques, for example,
There is number 185024.

The object of the present invention is to provide a compact punching device that eliminates the adverse effects of the bending moment acting on the punch rod during punching and the deflection of the main body, and the width of the punch die set does not change even if the number of axes of the punch rod is increased. It is said that

In the present invention, a punch die set is provided in the lower part of the main body, and the punch die set is rotated by a predetermined angle by an axis selection indexing device, and the punch die set is provided with a punch die set arranged at circular arc intervals corresponding to the predetermined angle on the same circumference around the center of rotation of the punch die set. A punching device in which a punch rod and a die are arranged as a pair, and a punch cylinder is installed vertically downward in the main body, and a guide groove for supporting and guiding the punch rod is provided in the cylinder rod directly above the indexing position of the punch rod. This achieves the above objective.

The present invention will be explained below based on embodiments shown in the drawings. In FIGS. 6 to 8, the main body 43 is disposed on the inclined guide portion 45 of the base frame 44 and is screwed with a nut 48 to a screw rod 47 that is pivotally attached to a motor 46 fixed to the base frame 44. When rotated, the angle iron 49 is shifted perpendicular to the feeding direction. A punch cylinder 11 is installed vertically downward on the upper arm 50 of the main body 43, and a punch is mounted on a support base 51 protruding forward at the lower part, which rotates at a predetermined angle by an axis selection indexing device 52 fixed to the side of the support base. A die set 53 is provided. This punch-die set includes three sets of hole-drilling tools in which a punch rod 56 and a die 22 are paired at arcuate intervals corresponding to the predetermined angle on the same circumference centered on the axis 55 of the rotating shaft 54, which is the center of rotation. It is placed. Thus, the axis of the cylinder rod 58 is set at the punching tool indexing position, and the punch rod 56 is positioned at the flange 57 at the top thereof.
Block 6 of the punch die set 53 so that the T groove 59 of the cylinder rod 58 remains at the same level as
It is supported by a pin 62 which is pressed by a spring 61 to 0 and comes into contact with a stepped portion 63 of the punch rod 56 only when not punching.

Since this embodiment has the above-described configuration, the punch rod 56 used for punching is indexed by the axis selection indexing device 52 to the hole punch indexing position, that is, directly below the cylinder rod 58, and the punch rod 56 is indexed to the punching position of the angle iron 49. is positioned at the drilling tool indexing position by the material feeding device 4, the punch cylinder 11 is operated, and punching is performed using the punch 20 and die 22. When the punching is finished, the material feeding device 4 sets the next punching position of the angle iron to the hole punch indexing position, and when the punch diameter changes, the required punch rod is set to the axis selection indexing device 5.
At step 2, index the punch to the index position and perform punching, and then repeat the above-mentioned operations.

In punching out multiple rows, the motor 46 is appropriately driven to shift the punch-die set 53 along with the main body 43 by a predetermined length perpendicular to the material feeding direction before punching.

As explained above, according to the present invention, since the punching tools are arranged on the same circumference of the punch-die set, the width of the punch-die set does not change even if the number of punching tools increases, resulting in a compact punch. Can be used as a dice set. Therefore, the main body can be made smaller, and accordingly, the arm length of the material feeding device and the processing station can be shortened. Furthermore, since the punch rod used is positioned within the cylinder rod to reduce or eliminate the bending moment during punching, it is possible to reduce the size of related parts. In addition, the punch rod is placed on a support base that protrudes forward from the bottom of the main body, so it is not affected by the deflection of the main body that occurs during punching.
This has the advantage of improving punching accuracy and extending tool life.

[Brief explanation of the drawing]

Figure 1 is a plan view of the long material processing line, Figure 2 is a partially cutaway side view of the conventional equipment, and Figure 3 is a partially cutaway side view of the conventional equipment.
The figures are a view taken in the direction of arrow A in Fig. 2, Fig. 4 is a front view of another conventional device, Fig. 5 is a side view of the same, Fig. 6 is a side view showing an embodiment of the present invention, and Fig. 7 is a FIG. 8 is a partially sectional side view of the punch die set, and FIG. 8 is a plan view of the punch die set. 11...Punch cylinder, 22...Die, 43
... Main body, 44 ... Base frame, 45 ... Inclined guide section, 46 ... Motor, 47 ... Screw rod, 4
8...Nut, 49...Angle iron, 52...Axis selection indexing device, 53...Punch die set, 54...
Rotating shaft, 56... punch rod, 58... cylinder rod, 59... T groove.

Claims (1)

[Claims] 1. A punch die set is provided at the bottom of the main body and rotates at a predetermined angle by an axis selection indexing device, and this punch die set has a punch rod and a die set on the same circumference around the center of rotation at arcuate intervals corresponding to the predetermined angle. A long material in which a pair of punching tools are arranged, and a punch cylinder is installed vertically downward in the main body, and a guide groove for supporting and guiding the punch rod is provided in the cylinder rod directly above the indexing position of the punching tool. punching device.