JPS6281219A - Full automatic bending device - Google Patents

Abstract

PURPOSE:To increase the bending degree of freedom without being limited by the length of a pipe by turning the holding die which holds a blank pipe and the hydraulic cylinder provided on the holding die to the right and left centering around a bending die. CONSTITUTION:A hydraulic servomotor 52 is connected directly to the shaft 51 of a gear 50 by engaging the gear 50 of the other part to the gear 49 connected directly to the shaft 48 of a bending die 2. The bending die 2, holding die 5, holding die support 6, 7 holding cylinder 8 and the holding die arm 9 to which these are fixed are rotated by turning the hydraulic servomotor 52 thereof. When the holding die arm 9 is rotated and collided with the end face of the right pressure die 12 or left pressure die 17 by rotating the holding die arm 9, the holding die 5 moves in the longitudinal direction of the pipe 1 on the holding die support. Also the right bending clamp die 3 and left bending clamp die 4 are fixed to the bending die 2. The right bending or left bending is performed by operating the booster cylinder 28 connected to the booster clamp die 22 which clamps hydraulic motor 52 and pipe 1.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to a fully automatic bending device that is applied, for example, to cold bending of pipes, and particularly to rolling mills and nuclear power plants.

The present invention relates to a fully automatic bending device suitable for bending pipes made of elastic materials for thermal power, hydraulic power, and other hydraulic piping and pneumatic piping.

[Background of the invention]

Conventionally, as shown in FIG. 8, tl from one end.

1, +1. ．． 1 turtle +t, +t3, and 1. +12
To obtain the pipe 1 bent at +13 +14, the following method was used.

First, as shown in FIG. 9(a), one area of a straight pipe l is held down by a holding part 61, and a bending mold 62 is placed near the holding part.
Next, attach the holding part 6 to the piping 1 on the opposite side of the holding part 61 to the contact part with the bending die 62.
Assign 3. Thereafter, as shown in FIG.
Figure 9 (C
), after the holding member 611, the bending die 62, and the holding member 63 are brought into the same positional relationship as in FIG. 9(a), the holding part 63 is moved.

However, in this case, as shown in FIG. 9(d), the portion W1 on the side bent in the previous step is oriented toward the floor surface 64 side. Therefore, there is a limit to the distance to the floor surface 64, and the distance cannot be set too large. This means that AIl (n=
1.2 and 3.4), which limits the degree of freedom when designing the piping described in @. Such restrictions are the same even if the point A or point B of the pipe 1 shown in FIG. 8 is used as the starting point of bending.

[Purpose of the invention]

The present invention has been made based on the above circumstances, and provides a fully automatic bending device with a large degree of freedom without any restriction on the length even when obtaining the piping metal shown in Fig. 8. [Summary of the Invention] To achieve the above object, the present invention is made.

A holding mold that holds the raw pipe, a hydraulic cylinder provided on the holding mold, a bending mold that removably fixes the bent portion of the raw pipe at the bending position, and this bending mold is rotated by the bending angle. A holding mold having a bending mechanism having a hydraulic servo motor and holding a blank pipe, and a hydraulic cylinder provided in the holding mold.

It is configured to rotate in both left and right directions around the bending die.

[Embodiments of the invention]

1 to 61 are one embodiment of a fully automatic bending device according to the present invention. This embodiment shows a fully automatic bending device for bending piping for oil and pneumatic equipment.

FIG. 1 shows the overall configuration of a fully automatic bending device.

A gear 49 directly connected to the shaft 48 of the bending mold 2 meshes with another gear 50, and a hydraulic servo motor 52 is directly connected to the shaft 51 of the gear 50. This hydraulic servo motor 52
By rotating gear 50. A bending die 2 and a holding die 5 fixed thereto via a gear 49. Retention type support 6.7° Retention type cylinder 8. The holding arm 9 to which these are fixed is pivotable. The holding mold 5 is fixed via a holding mold support 6.7.

The holding support 7 is provided with a holding cylinder 8 for clamping the pipe 1 in a direction perpendicular to the pipe 1. The structure of The holding mold 5 can be moved on the holding mold support 7 in the longitudinal direction of the pipe 1 by rotating the holding mold arm 9 and colliding with the end face of the right pressure mold 12 or the left pressure mold 17. After this movement, the right fixed cylinder 11
Alternatively, the holding mold 5 and the holding mold support 7 can be fixed with the left fixed cylinder 10.

The right pressure mold 12 is fixed via supports 13.14,
The left pressure type 17 is fixed via supports 18 and 19. Right pressure type 12. The left pressure type 17 is indicated by ■-■ in Figure 1.
As shown in FIG. 3, which is a cross-sectional view of FIG.

On the pressure type support 25 is the right booster clamp type 2.
2. Left booster clamp type 24. A booster clamp cylinder 23 is provided respectively.

Right booster clamp type 22. The booster clamp cylinder 23, which has a left booster clamp type 24-piece single-rod cylinder structure, can move in the direction perpendicular to the pipe 1.

The right pressure mold 12 can be moved in the direction perpendicular to the pipe 1 by means of a right pressure mold cylinder 15 via supports 13.14. The right pressure type cylinder support 16 serves as a guide for the right pressure type cylinder. The left pressure type 17 can be moved in the direction perpendicular to the pipe 1 by means of the left pressure type cylinder 20 via supports 18,19. The left pressure type cylinder support 21 is a guide for the left pressure type cylinder 20. A booster cylinder 28 is fixed to the pressure support 25, which can be moved in the longitudinal direction of the pipe 1.

FIG. 4 is a sectional view taken along line 1--2 in FIG. 1 and shows the structure of the bending die 2. FIG. This bending type 2 is.

Bending guide 35. It is fixed to the shaft 48 via keys 37, 38. Also, for this bending die 2.

As shown in FIG. 1, the right bending clamp type 3. A left bending clamp 4 is fixed.

FIG. 5 shows the structure of a single-bend type moving arm. Bending type hook 34v'i, bending type hook rotating cylinder 1 fixed to nonder 33
is fixed to the hook moving cylinder 32 via a guide 36 fixed to the one-bending moving arm 29. From these K, the bending die hook 34 can be rotated by the bending die hook rotation cylinder 33 and moved in the vertical direction of the bending die 2 by the hook moving cylinder 32. 7 The bending die moving arm 29 can be rotated via the support 30. The arm-swivel cylinder 31 is fixed to the cylinder/darler 31, and the arm-swivel cylinder 31 is fixed to the right pressure type cylinder support 16. The arm rotation cylinder 31 causes the first bending mold moving arm 29 to rotate to the center position e of the bending mold 2.
The bending type hook 34 can be moved up to 1.

FIG. 6 is a diagram showing a one-bending radius movement mechanism.

Both bending devices described above are provided on the slide base 41. A rack 45 is fixed to the slide base 41, and a pinion 46 is engaged with the rack 45. A servo motor 47 is connected to this pinion 46. When the bending radius is input to the microcomputer, the servo motor 47 receives a command from the microcomputer and rotates by a predetermined amount, and the slide base 41 moves to a predetermined position.Then, the slide base 41 is moved by the fixed cylinder 43 fixed to the fixed support 42. The bending radius can be fixed and positioned. This servo motor 47 and the fixed cylinder 4
3 is fixed by a support 44.

The pipe chuck device 40 shown in FIG. 1 is a general chuck device for holding the pipe 1 with claws 39 and positioning and rotating the pipe 1 in the longitudinal direction.

Next, the operation of the automatic step setting method for the first stage right bend and the second stage left bend will be explained using FIGS. 1, 7, and 8.

First, the microcomputer checks that it is in the right bending state and begins the first bending stage. As shown in FIG. 1, the pipe 1 is positioned by a pipe chuck device 40, and then the pipe lt-ff1 holding mold 5. The pipe is clamped by the right pressure mold 12 and the right booster clamp mold 22, and the pipe chuck by the pipe chuck device 40 is released.

Next, with the pipe 1 clamped in this manner, the hydraulic servo motor 52 and the booster cylinder 28 are operated to perform a right bending process, as shown in FIG. 7(a). Next, as shown in Fig. 7(b), one bending process is completed. &N Release the holding mold 5 and attach the pipe 1 to the claw 3 of the pipe chuck device 40.
9, return the right booster clamp mold 22, return the right pressure mold 12 supported by the booster cylinder 28 and the right booster clamp mold, and pipe chuck device 40.
to position the pipe 1 and rotate the bending mold upward 90', return the holding arm 9 and the bending mold 2 by the hydraulic servo motor 52, and further release the fixed support 42,
The slide base 41 is moved by the servo motor 47 in the direction of the left pressure mold 17 by the diameter of the pipe 1.

Next, as shown in FIG. 7(C), the pipe 1 is moved to the rear of the bending device by the pipe chuck device 40.

The bending die moving arm 29 is moved by the arm rotation cylinder 31 shown in FIG. 5 to move the bending die hook 34 above the key hole in the center of the first bending die 2. In this case, Fig. 8 (a
) As shown in Figure 1, the center of the bending die is.

It will be moved so that it coincides with the center of the bending type hook 34.

Next, as shown in FIG. 8), the first bending die hook 34 is inserted into the key hole of the bending die 2 by the hook moving cylinder 32, and the first bending die hook 34 is inserted into the bending die 2 key hole by the first bending die hook turning cylinder 33. Rotate 90° in the hole and bend the die 2
hold.

Next (/C1) As shown in Figure 8 (C), move the hook moving cylinder 32 upwards on the bending die 2, hook the bending die 2 onto the bending die hook 34, and press the key 38°3.
Raise the height of 9 to 5 bend type guide 35Q guide.

Next, in this state, return the right fixed cylinder 11 to make the holding mold 5 free, and move the holding mold arm 9 to the left pressure mold 17.
The holding mold 5 is completely moved until the holding mold 5 comes into contact with the end face of the left pressure mold 17. In this case, the left fixed cylinder is clamped to fix the holding mold 5 and the holding mold support.

Therefore, at this time, the bending die 5 does not move once.

Only the holding mold 5 will rotate.

Next, the 1-bend hook 34 is operated in the reverse order.

That is, the first bending die 2 is placed in the key 38, 39 by the hook moving cylinder 32, using the bending die guide 35 as a guide, and the first bending die 2 is lowered in the axis 48 direction. let me,
The hook moving cylinder is moved upward, the first bending type hook is pulled out from the bending die 2, and the first bending type hook rotating cylinder 33 is used to move the first bending type moving arm 29't-Fig.
), return to the original position.

Next, the left booster clamp mold is moved toward the right pressure mold by the booster clamp cylinder 23, and the slide base 41 is moved by the servo motor 47V (by the right pressure mold 1
Move in two directions by (diameter of bending die 5) + (twice the diameter of pipe 1).

The pipe 1 is reinserted into the bending device using the pipe chuck device 40, and the pipe 1 is positioned in the longitudinal direction and in the rotational direction.

Next, as shown in FIG. 7(f), the slide base 41
is moved in the direction of the left pressure type 17 by the diameter of the pipe 1 by the servo motor 47, the fixed support 42 is clamped, the fixed support 42 and the slide base 41 are fixed, the right pressure type fixed cylinder 26 is opened, Clamp the left pressure type cylinder 27, fix the left pressure type 17 and pressure type support 25, and attach the pipe 1 metal holding mold 5. Left pressure type 17
and clamped by the left booster clamp type 24.

Release the claws 39 of the pipe chuck 40.

As described above, by these operations, it is possible to automatically set up the first stage right bend and the second stage left bend.

In the above embodiment, automatic setup from right to left bending has been described, but automatic setup from left to right can also be performed in the same way by reversing the direction of movement.

In addition, according to this embodiment, it is possible to freely select right or left bending within one bending interval, and it is also possible to process piping shown in FIG. 9 with dimensions that were previously impossible. The degree of freedom in design is greatly improved.

In the above embodiment, the movement of the two bending molds 2 was explained using a dedicated bending mold moving arm 29, but it goes without saying that the present invention can also be carried out by replacing this with a robot or the like.

Further, as in the above embodiment, the present invention is not limited to pipes.

It goes without saying that C can be applied to various types of bending of one material.

[Invention O @ attack]

As is clear from the above explanation, according to the fully automatic bending fl according to the present invention, even when obtaining the piping 'f shown in the 7π8 diagram, there is no limit on the length (lζ) and the degree of freedom is You will be able to obtain a large amount of

[Brief explanation of drawings]

1 to 6 are block diagrams showing one embodiment of a fully automatic bending device according to the present invention, FIG. 1 is an overall block diagram of the fully automatic bending device, and FIG. 2 is an I-I of FIG. cross section at line,
3 is a cross-sectional view taken along the line ■-■ in FIG. 1, FIG. 4 is a cross-sectional view taken along the line ■-■ in FIG. Figure 6 is a configuration diagram of the slide base mechanism of the fully automatic bending device, and Figure 7 (
a) to f) are explanatory diagrams showing the operation of the fully automatic bending device. FIG. 8(a) to C) is an explanatory diagram showing the operation of the bending type arm, FIG. 9 is an explanatory diagram of piping applied to one embodiment of the present invention, and FIG. 10(a) to d) is a process diagram showing an example of a conventional fully automatic device. 1...Pipe, 2...Bending type, 3...Right bending type clamp. 4... Left bending type clamp, 5... Holding type, 8...
Holding type cylinder, 9... Holding type arm, 10...
Left fixed cylinder, 11...Right fixed cylinder, 12
...Right pressure type, 15...Right pressure type cylinder, 17
...Left pressure type, 20...Left pressure type cylinder, 22
...Right booster clamp type, 23...Booster clamp cylinder, 24...Left booster clamp type, 25...Pressure type support, 26...Right pressure type fixed cylinder. 27...Left pressure type cylinder, 28...Booster cylinder, 29...Bending type arm, 31...Arm rotation cylinder, 32...Hook moving cylinder. 33...Bending type hook turning cylinder, 34...Bending type hook, 35...Bending type guide, 39...Claw, 4
0... Pipe chuck device, 41... Slide pace. 43...Fixed cylinder, 45...Rack, 46.
... Binion, 47... Servo motor, 48... Curved shaft. 49... Gear, 50... Gear, 52... Hydraulic servo motor.

Claims (1)

[Claims] 1. A holding die that holds the blank pipe, a hydraulic cylinder installed in this holding die, a bending die that removably fixes the bent portion of the blank pipe at the bending position, and a bending die that holds the blank pipe by the bending angle. and means for rotating the holding mold for holding the blank pipe and the hydraulic cylinder provided on the holding mold in both left and right directions about the bending mold. A fully automatic bending device featuring: