JPH0337785Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention relates to the improvement of bending technology that automatically feeds, tilts, and bends processing materials such as wire rods and pipes. The present invention relates to an automatic bending machine that sequentially tilts and bends the workpiece in multiple stages according to various stopper regulations in conjunction with multi-stage feeding.

(Prior Art) Conventionally, in this type of wire rod and pipe bending equipment, NC benders, which control three parts, feeding, tilting, and bending, using servo motors have been the mainstream.

(Problem that the invention aims to solve) However, because this conventional NC vendor uses many servo motors and complicated system control devices, it is forced to have a very expensive and complicated mechanism, and it has to be operated repeatedly. Problems were also likely to occur.

(Means for Solving the Problems) This invention was made to solve the above-mentioned conventional problems, and is constructed as follows.

Next, the automatic bending machine of this invention will be described in detail with reference to the drawings. 4 is a movable table that can move forward and backward along two rails 3 installed on the front and rear supports 1 and 2; In the embodiment shown in FIG. 2, there are four feed stoppers 5a, 5b, 5a, 5b, which are arranged at appropriate regular intervals at the rear end of the moving table 4 and whose lengths are gradually increased.
5c and 5d project in parallel and horizontally in the front-rear direction, respectively, to form a multistage feed position stopper 5.
Further, the support body 7 at the rear of the rear support plate 2 is provided with corresponding cylinders 6a to 6d, in which the rear ends of the feed stoppers 5a to 5d and the front ends of the piston rods respectively engage, forming a feed cylinder 6. ing. Further, the support body 7 is provided with a separate main cylinder 8 for moving the movable table 4 back and forth. In the embodiments shown in FIGS. 1 and 2, the moving table 4 can be positioned and transferred in multiple stages by means of a feed cylinder 6 that engages with a multi-stage feed position stopper 5.

In the embodiment shown in FIG. 3, the movable table 4 can be positioned and transferred in multiple stages by rotating a feed screw 10 using a servo motor 9. Next, in the embodiment shown in FIGS. 1 and 2, reference numeral 11 denotes a tilting shaft that is installed on the movable table 4 so as to be freely rotatable in the front and back direction, and has an automatic chuck 12 at its tip, and a pinion 14 in the center thereof. is fixed, and the pinion 14 meshes with a rack 15 that moves forward and backward in the left-right direction by a cylinder 16 on the right side of the movable table 4. As the rack 15 moves back and forth, the tilting shaft 11 rotates in forward and reverse directions via the pinion 15, forming a tilting unit A. Next, each tilting stopper 17a to 17 for regulating the tilting angle at each stage to the position where the movable table 4 is moved in multiple stages.
d are respectively attached to the mounting beams 18 to form multi-stage tilt stoppers 17. Furthermore, moving platform 4
The arm girder 19 (example shown in FIGS. 1 and 2) connected to
9 (FIG. 3 embodiment) includes bending stoppers 20a to 20d (first and second bending stops) for regulating the bending angle of each step.
Embodiment), each bending stopper 30a to 30b (third
The multi-stage bending stopper 2
0 (Embodiment in Figures 1 and 2), multi-stage bending stopper 30
are formed respectively. In the embodiments shown in FIGS. 1 and 2, the movable table 4 is connected to the rear support plate 2 as shown in FIG.
Each cylinder 6a reaches the reference line in the left and right direction passing through the rear end of the feed stopper 5a when it reaches the rearward limit where it stops.
The strokes of each of the cylinders 6a to 6d are kept constant so that the piston rod tips 6d to 6d are aligned.

Further, the difference in length between the feed stoppers 6a and 6b for regulating the multi-stage feed of the movable table 4 is
a, 17b and between the bending stoppers 20a, 20b, and the lengths of the feed stoppers 6b, 6c are the same as the respective interval lengths between the tilting stoppers 17b, 17c and the bending stoppers 20b, 20c. The difference in length between the feed stoppers 6c and 6d is between the tilting stoppers 17c and 17d and between the bending stoppers 20c and 2.
These are made equal to each interval length between 0d.

Then, the moving table 4 has four feed stoppers 5a to 5.
When each reaches the position regulated by d, cylinder 1
The racks 15 actuated by the cylinders 6 are brought into positions where they fit with their respective tilting stops 17a to 17d, and the racks 21 which are actuated by the cylinders 22 are placed into positions where they fit with their respective bending stops 20a to 20d. There is. When the rack 21 moves forward by operating the cylinder 22, the pinion 23 that meshes with it rotates, and the workpiece 13 held by the chuck 12 is bent by the bending protrusion 25 as shown by the chain line in Figures 1 and 2. It is something that will be done.

Next, in the embodiment shown in FIG. 3, no tilting is performed, and the workpiece 13 is fed in multiple stages by the servo motor 9, and the bending process is performed. By pressing, the workpiece 13 is pressed and bent.
Note that 28 is a regulating girder integrated with the pressing and bending girder 27, and each bending stopper 30a-
It is arranged to be located at a position corresponding to 30d.

The multi-stage tilting stopper 17 and the multi-stage bending stoppers 20 and 30 may be of the connected stopper type as shown in FIG. 4, and the multi-stage tilting stopper 17 may be of the plate cam angle stopper type as shown in FIG. can be used respectively.

(Operation of the Embodiment) When the final tilting and bending process is completed, the chuck 12 is automatically released and the bent product is dropped. Subsequently, the cylinder 16 moves the tilting rack 15 back to its retracting limit, and the feed cylinders 6a to 6d retract. Then, the movable table 4 is moved backward by the main cylinder 8 to the backward limit. Next, the machine will start, but first move the moving table 4 forward by operating the main cylinder 8, and when the chuck 12 comes to the position indicated by the chain line in FIG.
Chatting. Next, the movable table 4 is moved backward by the main cylinder 8, and at the same time the rod of the cylinder 6a is moved forward by a constant two strokes. Then, at the backward limit of the moving table 4, the feed stopper 5 is moved as shown in Fig. 1.
The rod tip of the cylinder 6a collides with the rear end of the cylinder 6a on the reference line and stops. Next, the cylinder 16 is actuated to advance the rack 15 and tilt the workpiece 13 integrally with the tilting shaft 11 by the regulation angle. Thereafter, the cylinder 22 is operated to perform the bending process at the regulated angle. Next, from the above state, the rod of the cylinder 6b moves forward, pushes the feed stopper 5b to the reference line, and sends the movable table 4. Then, tilting by the cylinder 16 and bending by the cylinder 22 are performed. Next, the rod of the cylinder 6c moves forward to push the feed stopper 5c to the reference line and feed the movable table 4. Then, tilting by the cylinder 16 and bending by the cylinder 22 are performed again. Next, the rod of the cylinder 6d moves forward and pushes the feed stopper 5d to the reference line to send the movable table 4. (The state shown in FIG. 2) Then, the cylinder 16 performs the final tilting operation, and the cylinder 22 performs the final bending process in sequence.

(Effect of the invention) The automatic bending machine of this invention has the above configuration,
Along with the multi-step feeding of the moving platform, the material to be processed, such as wire or pipe, is sequentially tilted and bent in multiple stages using the multi-stage tilting stopper and multi-stage bending stopper regulation. Unlike NC benders, which control bending and three locations using servo motors, this product can be provided at a significantly lower cost, and its simple mechanism does not cause any trouble during repeated operations, making it accurate even when processing short materials with a large number of bends. It has outstanding effects such as being easy to process.

In addition, since the tilting and bending operations are each regulated by stoppers, adjustment is easy and the functions are stable, thereby improving the functionality of this type of bending machine.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing the state of the automatic bending machine according to the invention at the time of startup, Fig. 2 is a plan view showing the state just before the completion of processing, and Fig. 3 is a plan view of another embodiment. Figure 4 is a plan view of the connecting stopper, and Figure 5 is a plan view of the connecting stopper.
The figure is a plan view of the angle stopper. 1... Front branch plate, 2... Back branch plate, 3... Rail, 4
...Moving table, 5...Multi-stage feed position stopper, 5a
~5d...Feed stopper, 6...Feed cylinder,
6a to 6d...Cylinder, 7...Support, 8...
Main cylinder, 9...Servo motor, 10...Feed screw, 11...Tilt axis, 12...Chuck, 13
...Processing material, 14...Pinion, 15...Rack, 16...Cylinder, 17...Multi-stage tilting stopper, 17a-17b...Tilt stopper, 18...
Mounting girder, 19...Arm girder, 20...Multi-stage bending stopper, 20a-20d...Bending stopper, 21...
Rack, 22... cylinder, 23... pinion,
24... Shaft, 25... Bending protrusion, 26... Cylinder, 27... Press bending girder, 28... Regulating girder, 29...
...Arm girder, 30...Multi-stage bending stopper, 30a-3
0d...bending stopper, A...tilting unit,
...Reference line.

Claims (1)

[Scope of utility model registration request] A moving table with a tilting unit capable of positioning and transferring in multiple stages by a feed cylinder or a servo motor that engages with a multi-stage feed position stopper, and a multistage provided at the position where the moving table moves to regulate the tilting angle. It consists of a tilting stopper and a multi-stage bending stopper connected to a moving table to regulate the bending angle.As the moving table moves in multiple stages, the processed material such as wire or pipe is sequentially moved in multiple stages according to the regulation of each stopper. An automatic bending machine that is characterized by tilting and bending.