JPS59209426A - Method and apparatus for manufacturing annular body - Google Patents

Abstract

PURPOSE:To manufacture an annular body without requiring independent bending of end part and without using a bending roll by holding both ends of a plate, bending them to draw near to each other, turning them around specified points, and joining both end parts. CONSTITUTION:Both end parts of a plate 20 are held by the first and second clamping devices 21, 22. When a switch for arm rotation in a switch box 30 is operated, the first arm 23 and the second arm 24 are turned. The steel plate 20 is turned in the direction to draw both ends near to each other around the centers of rotation of the first arm 23 and second arm 24, and bent while being guided so as to come into contact to outer periphery of a guide member 26. Meanwhile, the guide member 26 is lowered as shown by the arrow 71 by its own weight. When the work is completed, both end parts of the steel plate 20 are joined together, and a truely circular annular body that follows the shape of outer periphery of the guide member 26.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method and apparatus for manufacturing an annular body, and more particularly to a method and apparatus for manufacturing an annular body suitable for annular bending of a long thin plate.

Conventionally, a plate material is bent into an annular shape to form an annular body. There is a manufacturing method using a roll bender as a method for +J construction, but due to restrictions on the roll pitch with a roll bender, it may not be possible to bend the edges of the plate material, so bending with a roll bender is not possible. Bend the edge of the board before
Separate processing is often required.

Figures 1 and 2 are explanatory diagrams showing this conventional method for manufacturing an annular body. FIG.

In the conventional method, first, as shown in FIG.
The end 6 of the plate material 5 for forming the table-shaped body? '+S, and the upper die 1 is pressed against the lower die 3 to bend the end portion 6 of the plate material 5.

Then, the plate material 5 whose end has been bent in this manner is distributed between the bending rolls 7, 8, and 9 as shown by the broken line in Fig. 2, and these bending rolls 7
．． 8. While rotating the plate 5K, apply pressure repeatedly to bend the plate 5 into an annular shape.Finally, as shown by the solid line, the ends 6 and 6' of the plate 5 are aligned to form 11. I try to keep my body in shape. In addition, @ the end 6
, 6' are held together, a contact plate is brought into contact with them, and they are fixed together by welding.

By the way, the conventional manufacturing method performed in this manner has the following problems.

(1) B requires a large number of man-hours because it requires end bending work using an end bending machine and circular bending work using a roll bender.

(2) Annular bending work using a roll bender, 2nd
The bending roll 7 shown in the figure is moved in the direction of the arrow 10, and the bending rolls 8 and 9 are moved in the directions of the arrows 11 and 12, and the bending is repeated while adjusting the positions, so it requires skill and requires a great deal of work. It requires a lot of man-hours.

(3) As mentioned in (1) and (2) above, it requires a large number of man-hours, an end bending machine, and an expensive roll bender, so the manufacturing cost of the annular body is low. It gets expensive.

(4) y+r! 7g! Since a bending machine and a roll bender are required, and the bending rolls included in the roll bender usually have a large length of 1 m or more, a large space is used as the installation space for the annular body manufacturing equipment. . Furthermore, when manufacturing an annular body with a sufficiently small width dimension, that is, a band-shaped annular body, the length dimension of the bending roll is too large compared to the size of the annular body, and is not suitable. It's hard to say.

In addition, when the ends 6, 6' of the plate material 5 are fixed together by bath welding, conventionally, the annular bending work is performed separately from the work of gripping the ends 6, 6', and the work of gripping the ends 6, 6'. It requires welding preparation work such as making abutment plates for the parts, and therefore no improvement in work efficiency can be expected.

The present invention has been made in view of the actual situation in the prior art, and its purpose is to eliminate the need for independent end bending operations and without using bending rolls.
In addition, the annular body can be manufactured without any skill required (the object of the present invention is to provide a method and apparatus for manufacturing an annular body).

In order to achieve this objective, the annular body manufacturing method of the present invention includes:
Grasp the ll1jl ends of the plate material, bend both ends in a direction toward each other while rotating each around a predetermined point, and then align the two sides to produce an annular body. This is the composition. Furthermore, the flaky body manufacturing apparatus according to the present invention used for carrying out the method for manufacturing an annular body described above includes a first clamp device and a second clamp device that grip each of both ends of a plate material.
a clamping device, a first arm holding the first clamping device, a second arm holding the second clamping device i''t, and the first arm and the second arm. The main body is rotatably supported.

Hereinafter, the annular body manufacturing method and apparatus of the present invention will be explained based on the drawings. In addition, FIGS. 3 to 8(a).

(1:+), (C) First, the annular body manufacturing apparatus of the present invention will be explained, and then the annular body manufacturing method of the present invention will be described.

Figures 3 to 5 are explanatory diagrams showing one example of the manufacturing apparatus N of the present invention. Figure 3 is a front view showing the state before the bending operation starts, and Figure 4 is the state at the end of the bending operation. Plan view showing the state, No. 5
The figure is also a front view showing the state at the end of the bending work, ti1
FIGS. 6(a) and 6(b) are explanatory diagrams showing enlarged portions of the guide lever provided in this embodiment, and FIG.
) is an explanatory diagram showing the mode during bending work, FIG. 6(b) is an explanatory diagram showing the mode when removing the annular body, FIG. 7(a),
(b) l (C) is an explanatory diagram showing an enlarged view of the first clamp device provided in this embodiment, and FIG. 7(a)
7(b) is a front view, FIG. 7(C1 is a plan view, and FIG. 8(a)?(b) and (C) are arm rotation means provided in this embodiment. FIG. 8 (Al is a front view, Figure 78(b) is a left side view, and FIG. 8(C) is a right side view.

In Fig. 3.4.5, reference numeral 20 denotes an elastic plate 1 used for forming the annular body, such as a strip-shaped steel plate;
22 are a first clamping device and a second clamping device, which will be described later, which hold both ends of the tube, 23° and 24, respectively.
5 is a first arm and a second arm that hold the first clamp device 21 and the second clamp device n, respectively; 5 rotatably supports the first arm device and the second arm 24; This is the main body. Although not shown, devices such as a motor, a hydraulic pump, and a hydraulic hose are housed inside the main body 5. Reference numeral 26 is a guide member which is fixed approximately at the center of the steel plate A) and can be circumferentially surrounded by the steel plate 20, and 27 is a part of a later-described sliding guide lever which can change the shape of the outer peripheral part of the guide member 26. In addition, 'IJ, 29 is the first
Hydraulic hoses 30 are connected to the clamp devices 21 and 22 respectively, and 30 are housed in the main body, and a switch for clamping a motor (not shown), a switch for releasing the clamp, and a switch for rotating the arm. A switch box in which switches such as a switch and an arm return switch are arranged; 31 is a core wire connecting the switch of the switch box 30 and the motor in the main body δ; 32 is a cable connecting the first arm device to the second arm 24. This knob constitutes a moving mechanism that moves the second arm 24 toward or away from the second arm 24.

The guide lever portion 27 described above is illustrated in FIG.
) and (b). These 8
i+, 6 Figures (a) and (b), 33, 34
35 is a bracket provided integrally with the guide member 26;
(both ends are platen) 33, a lever connected to 34; 36 is a lever 35 and a bracket; 33 is a bottle that connects; 37 is a bottle that connects the lever 35 and bracket 34; 38 is formed on the lever 35; Reference numeral 39 denotes a protrusion formed on the lever 35, into which the aforementioned bottle 3G is movably inserted.

40 is another lever rotatably attached to the bottle; 36, for example, and is provided with a cam portion 43 that engages a large diameter portion 41 and a small diameter portion 42.

During work, the curve on the steel plate side mentioned above is
), that is, the color is arranged so that the large diameter portion 41 of the cam portion 43 of the lever 40 comes into contact with the protruding portion 39 of the lever 35, and thereby the shape of the outer peripheral portion of the guide portion side 26 is changed, for example. − It is set to be 1 yen. Further, when removing the annular body formed by the steel plate 20, the lever 4 is arranged as shown in FIG. 6(b).
The lever 40 is turned so that the small diameter part 42 of the cam part 43 of 0 faces the protruding part 39, and thereby the platen)
33 and 34 can be moved toward each other, that is, it is possible to change the shape of the outer circumference of the guide member 26 from a perfect circle to a shape with a smaller diameter.

Further, the first clamp device #21 described above is, for example, the seventh clamp device #21.
The configuration is as shown in Figures (a), (b), and (C).

In these 81!7 figures (a), (b), and (C), 44 is a base plate fixed to the first arm device, 45 is a hydraulic cylinder fixed to this base plate 44, and 46 is a part on the pace plate 44. A bracket 47 installed upright is a cam connected at one end to a hydraulic cylinder 45, and is rotatably supported by a platen 46Vc via a bin 48. Reference numeral 49 denotes a suppressing member that can press the end of the copper plate 20, and is swingably connected to the other end of the cam 47 via a pin. Note that 51 is a contact plate made of copper, for example, which is provided integrally with the pressing member 49, and can come into contact with the end portion on the steel plate side. Further, 52 shown in FIG. 7(a) is a bolt for fixing the base plate 1/-) 44 to the first arm device, and this bolt 52 is a long hole provided in the base plate 44).
Therefore, by loosening this bolt 52, the first clamp device 2J can be moved along the longitudinal direction of the first arm device. Although not shown, a second clamp device, 2
2 is also configured almost similarly to the first clamp device 21. However, the contact plate 5 provided in the first clamp device 21
1 is not provided on the second clamp device rod 22.

In addition, 5 shown in FIG. 8 (al l (bl, (C))
Reference numeral 3 denotes a housing portion that constitutes the upper portion of the main body 5. 54
, 55 are spur gears, among which the spur gear 54 is connected to the housing part 53.
The spur gear 55 is rotatably mounted on the movable body 53a, which is movably provided in the j''R body portion 53.
, 55 is the above-mentioned first arm %, second arm z4
It is placed coaxially with the center of rotation MJ. That is, the first arm 23 and the arm 24 of the plane 2 are connected to these spur gears 54.
, 55. Further, the above-mentioned moving body 53a is moved by the above-mentioned rotational force of the handle 320.

56 and 57 spur gears 54 and 55 are rack gears that mesh with VC, respectively, 58 and 59 are rack gears 5fi,
57 are each attached to a frame. Note that the end portion 60 of the frame 58 is movable with respect to the housing portion 53.
The frame 59 is movably housed in a guide member 61 that is provided in the guide member 61, and an end portion 62 of the frame 59 is fixed to the guide member 61.

The frame 58 is integrally fixed to the aforementioned moving body 53a. A bolt 03 fixes the frame 58 and is inserted into a hole provided in the guide member 61. By tightening this bolt 63, the frame 58 is fixed to the guide member 61, and by tightening this bolt 63, the frame 58, that is, the movable body 53a, can move toward or away from the frame 59. becomes. 64 is a hydraulic cylinder (55, 6
6 is rotatably provided on the moving body 53a, and the frame 5
A roller 67 is rotatably provided in the housing portion 53 to smoothly mesh the rack gear 56 mounted on the frame 59 and the spur gear 55. 2. Use the rollers to make it move smoothly.

The above-mentioned spur gears 54, 55, rack gears 56, 57
, the frames 58, 59, the guide section side 61, the hydraulic cylinder (]4, and the rollers 65, 66, 67 are the third
As shown in the figures, arm rotation means 46 are configured to rotate the first arm and the second arm through hydraulic pressure.

Next, the annular physical strength performed in the annular body manufacturing apparatus configured in this way! 8! An example of the transfer method will be described.

First, for example, both ends 81s on the steel plate side are placed on the base plate 44 of the first clamp device FAT 21 and the base plate of the second clamp device 2, and the clamp switch of the switch box 30 is activated.

As a result, the motor (not shown) in the main body operates 1 to 1.
The hydraulic pump is driven, and the pressure oil of the hydraulic pump is guided to the hydraulic hoses 28 and 29. Hydraulic hose path led il
, Fig. 7(a), (t)l, (
The hydraulic cylinder 45 shown in cl is operated, the cam 47 and the pressing member 49 are rotated, and one end on the steel plate side is gripped by the base plate and the pressing member 49. Similarly, the other end of the steel plate 20 is gripped by the pressure oil applied to the hydraulic hose 19 IC.

Next, the guide portion 1126 is set as shown in FIG. 6(a) and fixed to the center of the steel plate 2o as shown in FIG. 3, and then the switch for arm rotation 7Rj+ of the switch box 3o is activated. As a result, a motor (not shown) inside the main body δ is activated, the hydraulic pump is driven, and pressure oil is pushed through the hydraulic hose into the hydraulic cylinder 54 shown in FIG. 8(a), and the hydraulic cylinder 64 is It contracts in the direction of arrow 68 in (a). As the hydraulic cylinder 64 contracts, the frame 59%, rack gear 57, guide member 61, frame 58, and rack gear 56 move in the direction of the arrow 68.
As a result, the spur gear 54 moves to the arrow 69 in FIG. 8(a).
The spur gear 55 rotates counterclockwise as shown in FIG.
) in the clockwise direction shown by the arrow 70. Then, the first arm and the second arm unit rotate together with the rotation of these spur gears 54 and '550, and the steel plate 20 is moved in a direction in which both ends of the steel plate 20 approach each other, and both ends of the steel plate 20 are moved toward respective predetermined positions. The guide member 26 rotates around the point , that is, the center of rotation of the first arm device and the second arm device, and is guided and bent so as to contact the outer peripheral portion of the guide member 26 . During this time, the guide member 26 descends as shown by the arrow 71 in the 31st position. When the bending work shown in FIGS. 4 and 5 is completed, both ends of the copper plate side meet, and a perfectly circular annular body that follows the shape of the outer periphery 1s and IS of the guide part side 26 is formed. A contact plate 51 provided in the first clamp device 2J is brought into contact with the lower part of these drawing caps.

If it is not necessary to fix both ends of the steel plate [Delta] together, it is possible to fix them immediately in this state, for example by welding.

From the above-mentioned state, for example, if the clamp release switch of the switch box 30 is not pressed, the gripping of both ends of the copper plate by the first clamping device 21 and the second clamping device ^122, that is, gripping of the annular body, becomes impossible. The annular body and the guide member portion can be separated from the main body 5 or 11-'1. Then, by releasing the fixation between the annular body and the guide member 26 at the center of the annular body, and rotating the lever 40 constituting the guide lever part 27 as shown in FIG. 6 (1)), the annular body can be moved. It can be removed from the guide member 26.

Then, when the arm return switch of the switch box 30 is pressed, the first arm 23 and the second arm 24 return to the state shown in FIG. 3.

In addition, by loosening the bolt 52 in FIG. 7(a) and changing the position of the first clamp device 2, the first clamp device 21 can be finely adjusted to the optimal position that matches the length dimension of the green plate 20. can do. Also, loosen the bolt e3 shown in FIG. 8(a), and
In the state where a is movable, the hole shown in Fig. 3 etc.
When the handle 32 is rotated, the moving body 53a and the frame 5
8, spur gear 54, rack gear 56, rollers 65, 66
, one end of the hydraulic cylinder b4, and the first arm K move, so that the distance between the first arm and the second arm U can be changed as appropriate, and the above-mentioned fine adjustment and Alternatively, the first clamping device 21 can be placed in an optimal position that matches the length dimension of the steel plate 20.

In the manufacturing method and manufacturing apparatus for manufacturing an annular body in this manner, the annular bending operation is performed with both ends of the steel plate 20 being held by the first clamping device 21 and the second clamping device 22. By carrying out this method, the annular body can be manufactured without requiring an independent end bending operation on the copper plate side.

In addition, an electrical system including a switch box 3 (), a hydraulic system including a hydraulic pump and a hydraulic cylinder, and a first arm 2:3 of a size corresponding to the dimensions of the annular body to be manufactured.
By providing the second arm 24, the kite member 26, and the main body 5, it is possible to manufacture an annular body without using a bending roll.

Further, by pressing the switch of the switch box 30, the annular body can be easily manufactured without requiring any special skill.

In addition, when both ends of the steel plate 20 are fixed together by welding in the state shown in Figures 4 and 5, both ends are correctly positioned by the contact plate 51, preventing the YNN group from falling off, and Since this contact plate 51 is made of a hollow structure, welding between the welding portion and the contact plate 51 is prevented, and therefore the ±17-shaped body, that is, both ends of the intermediate plate 200 can be easily removed from the contact plate 51.

In the above embodiment, the first clamp device f*: 21,
The second clamping device 22, the first arm "I3,'
? The arm 24 of B2 is actuated via hydraulic pressure (IT
Although the present invention is not limited to this configuration,
To operate the first clamp device 21, second clamp device 22, rabbit 1 arm, and second arm by directly utilizing the power transmitted by the motor. is also possible.

Further, in the above-mentioned example 7111i, the annular body is replaced by the band-shaped end plate 20.
However, the present invention is not limited to this, and it is possible to manufacture annular bodies with various width dimensions.

Further, in the above embodiment, the first clamping device 21 has a contact plate 5.
1, such a contact plate 51 can also be provided in the second clamp device 22.

Further, in the above embodiment, the outer circumferential portion of the guide member 26 can form a perfect circle, but the present invention is not limited to this. For example, the outer circumferential portion of the guide member 26 may be configured to form an ellipse. can. Note that, if there is no particular need, the configuration may be such that the guide member portion is not included.

Since the method and apparatus for manufacturing a J-shaped body and a Y-shaped body according to the present invention are constructed as described above, it is possible to form a circular shape without requiring an independent end bending operation, without using a bending roll, and without requiring any skill. The body can be manufactured and has the effects listed below.

(1) Since the annular body can be manufactured without requiring independent end bending work, the number of work steps can be reduced compared to the conventional method.

(2) Since the annular body can be manufactured without using bending rolls, there is no need for fine adjustment or repeated annular bending process associated with bending rolls, and even beginners can easily perform the process without requiring any skill. The number of man-hours required for circular bending work can be reduced compared to conventional methods.

(3) As mentioned in (1) and (2) above, the number of man-hours can be reduced, and the conventional end bending machine and expensive roll bender are not required. can be reduced compared to

(4) Since an end bending machine and a roll bender are not required, the installation and space of the annular body manufacturing apparatus can be minimized.

In addition, when the ends of the annular body are welded to form a solid body, there is no need for welding preparation work such as conventional end gripping work and contact work with abutment plate, and the annular bending can be done after the work. Since welding can be performed continuously, work efficiency is significantly improved compared to conventional methods.

[Brief explanation of the drawing]

Figures 1 and 2 are explanatory diagrams showing a conventional method for manufacturing an annular body. Figure 1 is an explanatory diagram showing a process using a processing machine for bending the end, and Figure 2 is an explanatory diagram showing a process using a roll bender. Mausoleum map shown,
3 to 5 are explanatory diagrams showing one embodiment of an annular body manufacturing apparatus for carrying out the annular body manufacturing method of the present invention, FIG. 3 is a front view showing the state before the bending work starts, and FIG. 4 FIG. 5 is a plan view showing the state at the end of the bending work, FIG. This is an explanatory diagram showing the 61st! Sjl (a) is an explanatory diagram showing the mode during bending work, FIG. 6(b) is an explanatory diagram showing the mode when removing the annular body, and FIGS. 7(a), (b), (c
) are explanatory diagrams showing an enlarged view of the first clamp device provided in this embodiment, FIG. 7(a) is a side view, FIG. 7(b) is a front view, and FIG. 7(C1 is a plan view, Fig. 8(a)
, (b) and (C) are explanatory diagrams showing an enlarged view of the arm rotation means provided in this embodiment, and FIG.
a) is a front view, Fig. 8 (b) is a left side view, Fig. 8 (CJ
is a right side view. W...Steel plate (plate cut), 21...First clamp device ff, 22...Second clamp device 6.4...Planer, Arm 1, 24...
・Skin 2 arm, 5... Body, z6...
・Guide member, 7.7... Part of guide lever, 3
2...No-endoru, 43...Cam part,
44...Base plate, 45°04...
...Hydraulic cylinder, 46...Bracket, 47
...Cam, 48,! 50...pin, 49...pressing member, 51...butting plate,
52, ti3...Bolt, 53...
・Housing portion, 53 a...Moving object! '+4.
, 55... Spur gear, 56 , 57...
Rack gear, 58, 59... Frame, ti
5, 66, 67... Laura. 1st Figure 6 2nd I! 1 Figure 3 7 Figure 7 (G) Figure 8

Claims (1)

[Claims] 1. Grasp both ends of the plate material, bend the ends in a direction toward each other while rotating each around a predetermined point, and then align the ends. A method for manufacturing an annular body having the 4S characteristic of manufacturing an annular body by 2. The method for manufacturing an annular body according to claim 1, wherein the plate material is bent along the outer periphery of the guide member. 3. The method for manufacturing an annular body according to claim 1, wherein the Bfr feature is to fix the matched ends. 4. An annular body manufactured by gripping both ends of a plate, bending the ends in a direction toward each other while rotating each around a predetermined point, and then aligning the ends. The apparatus used in the manufacturing method includes a quasi-first clamp device and a second clamp device that grip each of both ends of the plate material, a first arm that holds the first clamp device, and a second clamp k. u3 holding IM,
4. An annular body characterized by comprising two arms and a main body rotatably supporting the first arm and the second arm. 5. The annular body manufacturing apparatus according to claim 4, further comprising a guide member which is fixed to the plate material and which the plate material can circumferentially surround. 6. The annular body manufacturing apparatus as set forth in claim 5, wherein the outer peripheral portion of the guide portion is capable of forming a perfect circle. 7. At least one of the first clamp device and the second clamp device has a contact plate that can come into contact with both ends of the board shed. Body manufacturing equipment. 8. An annular body manufacturing apparatus as set forth in claim E1Σ, paragraph 4, characterized in that it has an arm rotation means for rotating the first arm and the second arm through hydraulic pressure.