JP3131278B2 - Automatic tool changer for sword bending machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic tool changing device for a sword bending machine, which is equipped with a plurality of bending blades and can automatically change the bending blade according to various products.

[0002]

2. Description of the Related Art Conventionally, a squeezing and bending apparatus is provided with a bottom die which stands upright at a front end on a frame, and a rear end pivotally supported at the other end on the frame so as to be rotatable vertically. A crank beam, a top die at the front end of the crank beam facing the bottom die and holding the work, a bend beam pivotally supported at the rear end on the frame and vertically swingable, and a bend beam The upper and lower bending blades, which are provided at the other end of the work, for bending the work upward or downward, are configured to swing right and downward to bend the work upward and downward to bend the work downward. It is a dynamic bending device.

[0003]

In the case of a product requiring an angle larger than a required bending angle, a tool shape suitable for the product is required in order to avoid interference between the product and the bending blade. It is often necessary to change tools by product or even within the same product. For this reason, a waste time at the time of tool setup change is increased.

[0004] Therefore, the stiffener bending device is required,
There has been a demand for automation of a tool changer that can automatically select and change tools.

SUMMARY OF THE INVENTION An object of the present invention is to provide an automatic tool changer for a sword-bending device which has a simple structure, eliminates wasting time for setup change by automation, and improves work efficiency in order to solve the above problems. It is to be.

[0006]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a bottom die having an upright position at a front end on a frame, and a bottom die having a rear end pivotally supported at a rear end on the frame. A crank beam rotatably provided on the frame, a top die at the front end of the crank beam opposed to the bottom die and holding the work, and a rear end supported on the frame so as to be swingable in the vertical direction. A bending bend beam, and an upper and lower bending blade for performing a bending process on the work at a front end of the bend beam, wherein the slide is provided on the frame to make the bend beam slidable. Part, a tool holder drum provided at the front end of the bend beam and having a plurality of sets of the upper and lower bending blades mounted on the outer periphery thereof, and rotatably driving the tool holder drum. A rotary drive unit, an automatic tool changer of ironing bending apparatus characterized in that it comprises a fixed positioning means for fixing positioning the tool holder drum to be rotated to the required position.

According to another aspect, the upper and lower bending blades are a plurality of divided bending blades arbitrarily fixed in the bending length direction.

[0008] According to still another aspect, the bending blade performs combination processing with another type of bending blade.

[0009]

By using the automatic tool changer of the sword bending apparatus of the present invention, a slide means for slidably moving a bend beam is provided on a frame, and a plurality of sets of upper and lower bending blades are mounted on the outer periphery. A holder drum provided at the front end of the bend beam; a drum rotation drive unit rotatably driving the tool holder drum provided on the bend beam; fixed positioning means for fixing the rotated and positioned tool holder drum;・ By combining the lower bending blade with the split winding bending blade or other types of bending blades, the dead time of setup change is eliminated by automation, and the configuration is simple.
Work efficiency is improved.

[0010]

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

FIG. 1 is a schematic structural view of an embodiment of the present invention, and FIG. 2 is a perspective view of a tool change main body and a tool holder drum which are main parts of FIG. In FIGS. 1 and 2, the swordbending device 1 includes a bottom die 5 erected upward at a front end on a frame 3 and a support base 7 provided at a rear end on the frame 3 with a shaft 9 at a rear end. A crank beam 11 supported by a shaft, a top die 13 provided at the front end of the crank beam 11 so as to face the bottom die 5, and an automatic tool which is provided to be swingable in a vertical direction and performs squeezing bending on the workpiece. And an exchange device 21.

Note that the crank beam 11 is
The other end of the crank beam driving cylinder 25 whose one end is supported by the shaft 27 is supported by the shaft 29 at the upper end of the support 23 provided above. This drive cylinder 2
5, the crank beam 11 is driven in the vertical direction, and the work is held between the top die 13 and the bottom die 5.

The automatic tool changer 21 is provided with a bend beam 1
5, a slide portion 31 for allowing the bend beam 15 to slide back and forth, a tool holder drum 33 provided on the bend beam 15, and a shot pin 37 as tram fixing positioning means.

The slide section 31 includes a slide frame 39.
Are guided by guide rails 41 provided on the frame 3, and are slidably provided in the front-rear direction (die direction or the opposite direction) by the front-rear drive cylinder 43.

The bend beam 15 comprises a swing beam 47 and a tool chain body 49. Rocking beam 47
Is supported at its rear end by a shaft body 45 on a slide frame 39 so as to be vertically swingable. A tool chain main body 49 is integrally provided at the front end of the swing beam 47. In this embodiment, the lower end of the tool chain body 49 is supported by the bending drive cylinder 51 housed in the frame 3, and the bend beam 15 is
Is driven to swing freely.

The tool holder drum 33 is pivotally supported by a tool chain main body 49, and is driven by a tram rotation drive motor 53, which is a drum rotation drive means mounted on the tool chain main body 49, to drive the drive chain 55 and the driven chain 55. It is rotatably provided via a sprocket 57.

The tool holder drum 33 is provided on its outer periphery with a plurality of sets of upper and lower bending blades, for example, an acute upper bending blade 17a, an acute lower bending blade 19a, a 90-degree upper bending blade 17b, and a 90-degree lower bending blade 19b. Have been.

As shown in FIG. 3, a 90-degree bending blade 17b, 1
9b is the bending dimension a for bending the workpiece W to 90 degrees or less.
On the other hand, as shown in FIG.
Is bent to about 135 degrees, the bending dimension b becomes large.

Therefore, as shown in FIGS. 5 and 6, the split bending blade 59 can be set at an arbitrary position and can be bent in combination with the different bending blade 61. A 90-degree bending process (b) can be performed without changing the setup.

Also, as shown in FIG.
Bending by the combination of the 90 ° bending blade 17b and the minimum bending (C) by the 90 ° bending blade 17b;
The acute angle bending process (d) by the acute angle bending blade 17a can be performed without changing the setup. The length l of the bending process (c) is a dimension that cannot be entered by the acute angle bending process.

As shown in FIG. 2, the tool holder drum 33 is provided with a large number of tapping holes 65 for fixing the bending blades in the bending length direction, and the upper and lower bending blades 59a, 59b, 61a, 61a, and 61b.
61b and the like are mounted by the mounting bolts 35 (FIG. 1), and can be combined with another type of bending blade, for example, a split bending blade 59 for mounting the split bending blade 59 at an arbitrary position in the bending length direction. .

Further, the shot pin 37 of this embodiment, which is a fixed positioning means, is provided on the front end face of the tool chain body 49, and is provided so as to be freely fitted into holes 63 provided at both ends of the tool holder drum 33. , Tool holder drum 33
Is fixedly positioned at a required position.

With the above configuration, FIG.
When the workpiece W enters the place of the tool holder drum 33 in the middle of the bending process as shown in (1), the entire tool chain body 49 is moved along the guide rail 41 by the front-rear drive cylinder 43 in the direction opposite to the die direction. Go to

The amount of movement is determined by the upper and lower bending blades 17a, 17b, 19a, 19b attached to the tool holder drum 33.
Is the retreat distance to a point where the rotation locus does not interfere with the work W. In this case, the bending drive cylinder 51 was previously provided.
Are in a balanced state, and a sequence is set up so as not to become a load when the vehicle is retracted by the front-rear drive cylinder 43.

After confirming that the front-rear drive cylinder 43 is at the retracted end, the fixed positioning shot pin 37 is pulled out, and the tool holder drum 33 is opened. At the same time or with a required delay time, the tool holder drum 33
Are arbitrarily selected bending blades 17a, 17b, 19a,
It is rotated and positioned to 19b.

When the positioning operation is completed, the shot pin 37 is inserted into the hole 63 and fixed and positioned. Thereafter, the tool chain main body 4 is driven by the front-rear drive cylinder 43.
9 is advanced to a forward end which is a bending position. next,
The operation pressure of the bending drive cylinder 51 is returned to the bending operation state, and the next bending operation is started.

It should be noted that the present invention is not limited to the above-described embodiment, but can be carried out in other modes by making appropriate design changes. For example, the method of rotating the tool holder drum 33 Does not depend on the driving method of the drum rotation motor 53, but may be a cylinder driving method or the like.
The method of attaching and detaching the bending blades 17a, 19a and the like is not limited to bolting, and it is easy to use a one-touch mounting method or a hydraulic clamping method.

Further, in the present embodiment, the avoiding operation of the tool chain body 9 is not limited to the forward / backward drive of the front / rear drive cylinder 43, but may be a linear movement by a link mechanism or a rack and a pinion.

[0029]

As is clear from the above description, the automatic tool changer of the sword wrapping device of the present invention is provided with a slide means for slidably moving a bend beam on a frame, and a plurality of sets on the outer periphery. A tool holder drum on which the lower bending blade is mounted is provided at the front end of the bend beam, and a drum rotation drive unit for rotatably driving the tool holder drum is provided on the bend beam, and the rotated and positioned tool holder drum is fixed. By combining the upper and lower bending blades with split winding bending blades or other types of bending blades, the problems of the prior art can be effectively solved, and the automation can reduce the waste time of setup change. On the other hand, the construction is simple and the work efficiency is improved.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of an embodiment of the present invention.

FIG. 2 is a perspective view of a tool change main body and a tool holder drum, which are main parts of FIG.

FIG. 3 is an explanatory view of a bending process using a 90-degree bending blade.

FIG. 4 is an explanatory view of a bending process using an acute bending blade.

FIG. 5 is an explanatory view of a combination bending process of a divided bending blade and a different bending blade.

FIG. 6 is an explanatory diagram of a work that has been bent according to FIG. 5;

FIG. 7 is an explanatory diagram of a workpiece bent by a combination of an acute-angle bending blade and a 90-degree bending blade.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Stiffener bending machine 5 Bottle die 11 Crank beam 13 Top die 15 Bend beam 17 Upper bending blade 19 Lower bending blade 21 Automatic tool changer 25 Crank beam drive cylinder 31 Slide part 33 Tool holder drum 37 Shot pin 43 Front-rear drive cylinder 47 Shaking Moving beam 49 Tool chain body 51 Bending drive cylinder 53 Drum drive motor 59 Split bending blade

Claims (3)

(57) [Claims] 1. A bottom die that stands upright at a front end on a frame, a crank beam whose rear end is pivotally supported at a rear end on the frame and that is rotatably provided in a vertical direction. A top die at the front end for holding the work in opposition to the bottom die, a bend beam having a rear end pivotally supported on the frame and provided to be swingable in the vertical direction; A sword bending device having upper and lower bending blades for performing a bending process, wherein a slide portion provided on the frame and capable of sliding the bend beam in the front-rear direction, and provided at a front end of the bend beam on an outer periphery. A tool holder drum on which a plurality of sets of the upper and lower bending blades are mounted, a drum rotation drive unit for rotatably driving the tool holder drum, and the tool holder to be rotated Automatic tool changer of ironing bending apparatus characterized in that it comprises a fixed positioning means for fixing positioning of the ram to the required position. 2. The automatic tool changing device for a sword cutting device according to claim 1, wherein the upper and lower bending blades are a plurality of divided bending blades arbitrarily fixed in a bending length direction. Automatic tool changer for sword bending machine. 3. An automatic tool changer for a bending tool according to claim 1, wherein the upper and lower bending blades are combined with another type of bending blade. Automatic tool changer for bending equipment.