JPS59153524A - Pipe bender - Google Patents

Abstract

PURPOSE:To provide a pipe bender which permits easy automation in supplying, bending and discharging of a pipe by constituting so that the pipe is clamped and twisted in the axial center position in the turning part of a twisting unit and the pipe is guided to the outside by a discharging mechanism after bending. CONSTITUTION:A pipe (a) is introduced along the guide groove 11 of a rotary plate 13 together with the V-shaped detaining part 17 of a discharging mechanism into the turning part 14 in the root part 10 of a twisting unit provided to a pipe bender and is clamped by a clamping mechanism consisting of cylinders 15, 2 and a fitting 31, a connecting piece 33, a clamp 16, etc. in the axial center part in the rotating part 14. A spiral cylinder 24 meshed with the tooth part 22 inscribed on the circumferential edge of the plate 13 is rotated by a servocontrol motor 25 and the plate 13 is rotated to twist the pipe (a); at the same time the pipe is bent in an optional position by a bending unit (not shown in a figure). After the pipe (a) is unclamped, the pipe is discharged to the outside of the part 14 along the groove 11 by a discharging mechanism consisting of an arm 18 provided with the part 17, the 1st and 2nd auxiliary arms 19, 20 and a cylinder 21, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pipe twisting unit in a pipe bender.

In recent years, unmanned work has progressed in various production factories, and not only the machine tools installed there are automated, but also the movement of workpieces between machines needs to be automated and unmanned. There is a strong desire for a pipe bender, which is a type of machine tool, to be completely unmanned for supplying pipes, processing them, transporting finished products after processing, moving between other machine tools, etc.

In this respect, conventional pipe benders often supply and transport pipes by hand, making it difficult to install the equipment in an unmanned production factory.

The present invention was invented in consideration of the above points, and includes a method for clamping a pipe 7 and supplying the pipe to a pipe twisting unit that can rotate the pipe on its axis, processing the pipe, and processing the pipe after processing. The aim is to be able to fully automate the unloading process.

Embodiments of the present invention will be described below with reference to the drawings. FIG. (a) is clamped along the longitudinal direction of the main body frame (1), and the clamped pipe (
A torsion unit (2) having a torsion mechanism that rotates and twists the pipe (a) on its axis, and the clamped pipe (a)
In order to bend any part of the mold, a folding device is installed on the main body frame (1) so as to be movable toward and away from the torsion unit (2), and rotates along the mold (3) and the outer periphery of the mold. It consists of a pair of bending units (5) having a bending arm (4).

Based on Figure 2 to Figure 5, the above torsion unit (2
) will be explained. A pair of side plates (81) equipped with a cut groove (7) with an exit (6) on the upper edge
9) A light is placed on the base α0 facing each other with the base θG.
A rotating portion 0 small is provided in the gap (9). The rotating part (+4') id, each cut groove (7) of the side plate (8) (8)
)K compatible ((Similar guide grooves (11)
) is formed from the center to the outer periphery 2, and the side plates on both sides (
8) (8) K, a pair of rotating plates (having 1, 30, 3 and 2) pivoted on the rotation mark.
4) has a clamp αυaeh which is attached between both rotary plates 03α9 so as to be movable in the direction toward and away from each other, and which is disposed opposite to each other at a position sandwiching the center part of the rotary plate 0''03, and these clamps ( The pipe (a) at the center of the rotating part 04 is held between the pipes (a) by the operation of the cylinder a9.

On the other hand, the pipe unloading mechanism consists of both side plates (81) of the base αO.
8), and a V-shaped locking part (171) is provided at the tip.
arms (18) which can be moved along the
Auxiliary arm 010 moan and these first auxiliary arm a rec aS
A second one is pivotally connected at one end to each other end of the
It consists of an auxiliary arm holder and a cylinder I21 for rotating the auxiliary arm. Each of the above components constitutes the torsion unit (2),
The pipe is supplied or discharged at the extension shown in Figure 4, and the pipe (
While holding a) with the clamp 06aυ, turn and twist it at an arbitrary angle.

Furthermore, based on FIGS. 4 and 5, to describe the rotating part (141 in detail), teeth extending approximately half the circumference of the rotating plate α3 are carved, and this tooth part (A) and While meshing, it can be rotated at any angle by a spiral cylinder @ fixed to the rotating shaft stem. The detector that detects the integration and controls the rotation angle of the rotation part 04), of course, memorizes the reference point of the rotation angle of the rotation part α4, and always detects the rotation i1!1 part αA in FIG. This is a reference point controller provided to return to the state. In addition, the rotating part (14
) between the rotary plates α30 of the rotary parts 0 so as to be movable toward the center of the treetop, and clamp the pipe (a>) with the V-shaped tips (a). , fixed to rotating plate 0j03 (two-pronged metal fitting G moved by cylinder 09)
) are connected to both tips (a) and (c) via connecting pieces (c) and (c). Clamp 06αG and bifurcated metal fitting 01)
The connecting pieces (C) (C), whose both ends are pivotally connected to the box (A), are clamped on the oea pipe (a) from the state shown in Fig. 4 to the state shown in Fig. 5 by the lever of the cylinder α. ). In the same figure, (c) is the empty space of the rotating plate provided at the moving parts of both ends (c) and (a) of the two-pronged metal fitting 011.

Next, the pipe delivery mechanism will be described in detail based on FIGS. 2 and 3. On both sides of the base α1 (81), there are first
The arm 08, which is pivoted to the fulcrum @, is pivoted to one end of the first auxiliary arm α at its rear end. And the first
The other end of the auxiliary arm α9 is at the second fulcrum (a) at the center of the arm.
The second auxiliary arm (a) is pivoted to one end of the dogleg-shaped second auxiliary arm (a), and the other end of the second auxiliary arm is connected to the cylinder e.
21). Therefore, as shown by the chain line (Fig. 3), the pipe (a) is connected to the cut groove (7) and the guide groove I.
It can be carried out from the central portion of the rotating portion a4 to the outside of the base θG through the rotating portion a4.

In FIG. 1, a pair of bending units (51(5)) installed movably in the directions of approaching and separating from each other are in a standby state, and the molds (3) and (3) are respectively connected to the torsion unit (2).
The center part corresponds to the end of the clamped pipe (a), and the pipe (a) at the upper end of the mold (31(3))
After pressing the pipe (a) with the presser part ζ ta and the presser molds (A) and (To) of 9, press the pipe (a) into the mold with the bending arm (4+ (41) pressure mold @ (B) at the lower end). (3) (3)
While pressing the bending arm (4) (4) onto the mold (3)
(3) The vibrator bends by rotating around the circumference.

In Fig. 1, (c) and (to) indicate a positioning device for correctly clamping a predetermined portion of the pipe when fixing the pipe (a) to the screw unit (2), and a handle (g) indicates a bending unit. (5) A moving frame on which (5) is placed and moved on the main body frame (1), and an adjustment section that adjusts the height of the pipe by appropriately raising and lowering the 00 Kenjiri unit (2). I cut it,
In Figures 4 and 5, Op is the bearing of the rotating shaft;
(A2c42 indicates the metal that connects both rotating plates α3 together.

Next, the present invention configured as described above will be explained in detail.

Now, with the guide groove OD of the part #J (04) aligned with the groove (7) of the base αG, and with the clamp QA QA open, insert the pipe (al) from the exit (6) to the guide groove 01. )
When the pipe (a) is inserted into the cut groove (7), the pipe (a) rides on the locking part of the arm α and is housed in the central part of the rotating part 041. Now operate the cylinder Ov and clamp OnαG
Clamp the pipe (a) from both sides, move the bending unit (5), bend any part of the pipe (a) by rotating the bending arm (4), and then clamp the pipe (a) from both sides.
5) Return to the state at time f and then move to another part of the pipe. The second bend is performed here, but in order to perform the second bend on a plane different from the bending plane of the pipe in the first bend, the rotating part (insertion) of the torsion unit (2) must be If the servo motor @ is driven to rotate the pipe at any angle, the pipe (a) try clamped by the clamp book α will rotate on its axis and be twisted again by the bending unit (5). When the bending process is performed, this second pipe bending is done on a different plane from the first bending process.After the bending process is completed in this way, the six rotating parts are returned to their original positions. When rotated in the opposite direction, the kerf (7) on the base 00 and the guide groove αD on the rotation M (14>) match, and at this point, the cylinder head is returned to open the clamp 00αG, and the cylinder e21+ is actuated to close the arm a. is rotated around the fulcrum □□□, and the processed pipe (a'l) riding on the locking part a at the tip is carried out from the inlet/outlet (6) to the outside of the twisting unit (2).

In the above structure, the pipe clamping mechanism, the rotation mechanism of the rotating part, and the pipe delivery mechanism may have other structures, and the present invention is not limited to the above embodiments.

As described above, the present invention provides a pipe bender consisting of a twisting unit that clamps a pipe, rotates and twists the pipe on its axis, and a bending unit that bends any part of the clamped pipe. The pipe has a clamping mechanism for the pipe, and a guide groove is formed extending from the center part to the outer periphery, and a rotating part that rotates the pipe at an arbitrary angle while clamping the pipe, and a rotating part that rotates the unclamped pipe. The pipe is characterized by being equipped with a twisting unit equipped with a pipe delivery mechanism that guides the pipe to the outside along a guide groove from the central part of the pipe.
Pipe processing in which pipes are bent at multiple points on different bending planes can be performed very easily, and the pipe to be processed can be supplied to the pipe bender and the pipe can be carried out after processing without using human hands. In addition, since the above-mentioned processing steps can be easily automated by controlling each mechanism, the present invention has features such as being able to be used as a machine tool in an unmanned factory.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention; FIG. 1 is a front view of a pipe bender, FIG. 2 is a front view of a torsion unit, FIG. 3 is a side view, and FIG. 4 is a longitudinal side view. ,
Similarly, FIG. 5 is a longitudinal sectional side view showing the rotating portion when it is in operation. (11...Body frame, (2)...Nesiri unit, (5)...Bending unit, (7)...Kill, 0
0...Base, al)...Guide groove, (14)...
Rotating part, aυ...clamp, (171...locking part, (to)...arm, patent applicant Keiyo Bend Steel Tube Co., Ltd. 1A valve"± Chiba Futoshi -・7.・', '5..7
．． . ″′″7

Claims (1)

[Claims] A pipe bender consisting of a twisting unit that clamps a pipe and rotates on the axis of the pipe, and a bending unit that bends any part of the clamped pipe, which has a pipe clamping mechanism in the center part and A rotating part that rotates the pipe at any angle while cranking the pipe with the clamp mechanism, and guiding the processed pipe from the center of the rotating part. A pipe bender equipped with a torsion unit equipped with a pipe delivery mechanism that guides the pipe to the outside along a groove.