JPH09182990A - Device for inserting partition of pressure container and its welding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a device for inserting a partition into a welding position without manual aid. SOLUTION: The device is such that a disk-like partition 4 is inserted into the welding position where the partition is girth-welded inside a cylindrical member 2 constituting a pressure container; the device is provided with a clamp mechanism 16 by which at least the periphery of the disk-like partition 4 is clamped inside the inner diameter of the cylindrical member 2, and with a driving mechanism 11 by which the clamp mechanism 16 is moved in the axial direction of the cylindrical member 2. In addition, if necessary, the device is provided with a receiving body 25 which is inserted into the cylindrical member 2 from the side opposite to the inserting direction of the partition 4, which supports the partition 4 in cooperation with the clamp mechanism 16 on the opposite side from the face supported by the clamp mechanism 16, and which also moves synchronously with the clamp mechanism 16.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a partition wall inserting device for inserting the partition wall to a welding position when the partition wall is inserted and welded inside a pressure resistant container such as an air tank, and an inserting device therefor. A partition wall welding device provided.

[0002]

2. Description of the Related Art For example, an air tank for an air brake is
As shown in FIG. 3, the seam-welded body (cylindrical member)
2 and end plates 3 and 3 that close the openings of both ends thereof, and a partition wall 4 that is inserted into the body 2 and welded to the inner periphery of the body 2 to divide the interior space into two. .

To manufacture this air tank 1, first,
A rectangular metal plate is rolled into a cylindrical shape, both ends in the circumferential direction are brought into contact with each other, and the seam 5 is welded to form the cylindrical body portion 2. Next, a bowl-shaped partition wall 4 is inserted into the body portion 2, positioned, and circumferentially welded. After that, the end plates 3 and 3 are circumferentially welded so as to close the openings at both ends of the body 2, and the air tank 1 is obtained. It should be noted that holes 6 such as an air supply port and an air discharge port are formed through the body portion 2 at the stage of a flat metal plate.

By the way, conventionally, the insertion and positioning of the partition wall 4 has been performed manually.

[0005]

However, the manual work is labor-intensive, and the partition wall 4 is likely to be inserted in a tilted state, resulting in a decrease in positioning accuracy. In particular, since the weld bead of the seam 5 exists on the inner peripheral surface, it is difficult to press-fit the partition wall 4 in a correct posture without tilting with respect to the inner peripheral surface of the body portion 2. In addition, if the circumference welding is performed with the tilted state,
Welding failure may occur, and welding failure is often found by air leak check at the stage of finally attaching the end plate, so re-welding at that stage is impossible,
It was supposed to be treated as a defective product.

In view of the above circumstances, the present invention provides a partition wall insertion device for a pressure-resistant container in which the partition wall can be inserted and positioned with high precision without manual labor, and a partition wall welding device equipped with the insertion device. The purpose is to

[0007]

According to a first aspect of the present invention, a partition wall inserting device for inserting a disk-shaped partition wall, which is circumferentially welded to its inner periphery, into a cylindrical member constituting a pressure vessel to a welding position. And a clamp mechanism that clamps at least the peripheral edge of the disk-shaped partition wall inside the inner diameter of the cylindrical member, and a drive mechanism that moves the clamp mechanism in the axial direction of the cylindrical member. Characterize.

According to a second aspect of the present invention, in addition to the structure of the first aspect, the partition is inserted into the cylindrical member from the side opposite to the insertion direction of the partition wall, and the partition is provided on the side opposite to the supporting surface by the clamp mechanism. It is characterized by comprising a receiver that supports the wall in cooperation with the clamp mechanism and moves in synchronization with the clamp mechanism.

A partition wall welding device according to a third aspect of the present invention is characterized in that the partition wall inserting device according to the first or second aspect is provided with a welding machine for circumferentially welding the partition wall.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to the drawings. 1 and 2 are side sectional views of a partition wall welding device 10 including a partition wall insertion device as a main part.
This device 10 is one in which a welding machine 50 (see FIG. 2) is attached to a partition wall insertion device. The partition wall insertion device is the first
It has a frame 12 which is moved up and down by a cylinder (driving mechanism) 11. A center rod 13 is hung downward from the frame 12. Around the center rod 13, a plurality of (three or more) peripheral rods 14 are arranged at intervals in the circumferential direction of the center rod 13. The upper end of each peripheral rod 14 is supported by the frame 12 so as to be vertically slidable.

At the lower end of the center rod 13, there is rotatably mounted a disk-shaped pressing head 15 that abuts the center of the upper surface (concave surface) of the bowl-shaped partition wall 4. Peripheral rod 1
A fitting body (clamping mechanism) that clamps the peripheral edge of the partition wall 4 by being press-fitted onto the inner periphery of the upper end of the partition wall 4 at the lower end of 4.
16 are connected. The fitting body 16 has a substantially ring shape having a diameter slightly smaller than the inner diameter of the body portion 2, and has a notch for disposing the torch of the welding machine 50 at one position in the circumferential direction. The lower ends of the peripheral rods 14 are connected to each other by a lower connecting arm 17 which is vertically slidable along the center rod 13, so that the fitting body 16 can be moved.
Is supported concentrically with.

The upper ends of the peripheral rods 14 penetrate the frame 12, and the protruding ends are connected to each other by the upper connecting arm 18. A central portion of the upper connecting arm 18 is connected to a rod of a second cylinder 21 fixed to the frame 12 in an upward direction.
By operating 1, the fitting body 16 as a clamp mechanism can be moved up and down independently of the pressing head 15 via the peripheral rod 14.

A fitting ring 23 is arranged around the peripheral rod 14. The fitting ring 23 is the partition wall 4.
Is inserted into the welding position, and is fitted to the inner periphery of the upper opening edge of the body 2. The fitting ring 23 is arranged concentrically with the center rod 13 and rotatably hangs at a predetermined height below the frame 12 via a support rod 24.

Then, the welding device 50 is attached to the center rod 13 of the partition wall insertion device thus constructed,
The partition wall 4 can be circumferentially welded to the inner peripheral surface of the body 2.

Below the center rod 13, an upward receiving body 25 is arranged so as to face the pressing head 15 at the lower end of the center rod 13. The receiving body 25 has an upper surface shape so that the partition wall 4 can be placed in a fixed posture, and the partition wall 4 can be sandwiched between the receiving body 25 and the pressing head 15. The receiver 25 is vertically movable so that it can follow the movement of the pressing head 15 in a synchronized manner, and can be rotationally driven.

Next, the operation will be described. In order to insert the partition wall 4 into the body portion 2, first, the fitting body 16 is fitted into the partition wall 4 to clamp the peripheral edge of the partition wall 4, and at the same time, the pressing head 15 is attached to the central portion of the upper surface of the partition wall 4. Press against. Also,
Before and after that, the body portion 2 is erected on the table 30 with the axis direction vertically, and the upper end opening of the body portion 2 and the partition wall 4 face each other.

In this state, the first cylinder 11 is driven in the direction of arrow (a) in FIG. 2 to lower the frame 12.
Then, the fitting body 16 and the pressing head 15 are lowered via the center rod 13 and the peripheral rod 14, and the partition wall 4 supported and clamped by these is press-fitted into the body portion 2. At the time of this press-fitting, since the partition wall 4 is lowered while the peripheral portion is securely clamped, the partition wall 4 is press-fitted in a correct posture without tilting. Prior to press fitting, the lower receiving body 25 is applied to the lower surface of the partition wall 4, and the partition wall 4 is sandwiched between the pressure head 15 and the pressing head 15.
By lowering 5 and the receiving body 25, the partition wall 4 can be press-fitted into the body portion 2 in a more stable posture.

When the partition wall 4 is inserted to the welding position as shown in FIG. 2, the driving of the first cylinder 11 is stopped at that position. At this point, the fitting ring 23 is fitted into the upper end opening of the body 2. After the first cylinder 11 is stopped, the second cylinder 21 is then operated in the arrow (B) direction to displace the peripheral rod 14 upward with respect to the center rod 13. Then, the fitting body 16 comes out from the peripheral edge of the partition wall 4 pressed by the pressing head 15, and the peripheral edge clamp is released.

Therefore, the partition wall 4 can be welded to the inner periphery of the body 2 by the welding machine 50 while rotating the body 2 in this state as shown by the arrow (c). When the welding is completed, the first cylinder 11 is driven to the original position, and the frame 12 and the receiving body 25 are returned to the initial state.

[0020]

As described above, according to the invention of claim 1, the partition wall is pushed into the inside of the cylindrical member while pressing the peripheral edge of the partition wall by the clamp mechanism, so that the partition wall is not tilted. It can be pushed securely to the welding position.
Therefore, the insertion and positioning of the partition wall can be accurately performed without manual labor, and the occurrence of defective welding can be prevented.

When the receiving body is provided as in the second aspect of the invention, the partition wall can be pushed into the cylindrical member while supporting it from the opposite side, so that the partition wall is press-fitted in a more stable posture. It is possible to improve the position accuracy.

By providing a welding machine as in the third aspect of the present invention, welding can be automatically performed at the same time as the insertion positioning.

[Brief description of the drawings]

FIG. 1 is a side sectional view showing a configuration of an embodiment of the present invention.

FIG. 2 is a side sectional view showing a state at the time of welding of the same embodiment.

FIG. 3 shows the structure of an air tank as a pressure resistant container,
(A) is an exploded perspective view, (b) is a sectional view.

[Explanation of symbols]

 2 Body (Cylindrical Member) 4 Partition Wall 10 Partition Wall Welding Device 11 First Cylinder (Drive Mechanism) 16 Fitting Body (Clamping Mechanism) 25 Receiving Body 50 Welder

Claims (3)

[Claims] 1. Inside a cylindrical member constituting a pressure-resistant container,
A partition wall insertion device that inserts a disk-shaped partition wall that is welded around its inner periphery to a welding position, and a clamping mechanism that clamps at least the peripheral edge of the disk-shaped partition wall inside the inner diameter of the cylindrical member. And a drive mechanism for moving the clamp mechanism in the axial direction of the cylindrical member. 2. The partition wall is inserted into the cylindrical member from the side opposite to the insertion direction, supports the partition wall in cooperation with the clamp mechanism on the side opposite to the supporting surface by the clamp mechanism, and synchronizes with the clamp mechanism. The partition wall insertion device for a pressure-resistant container according to claim 1, further comprising a receiving body that moves by moving. 3. A partition wall welding device for a pressure resistant container, wherein the partition wall insertion device according to claim 1 or 2 is provided with a welding machine for circumferentially welding the partition wall.