JPH06206154A - Finishing device for large-sized container liner welded bead part - Google Patents

Abstract

PURPOSE:To improve the working efficiency by installing a guide rail having a rack on a liner on the inner wall of a large-sized container, suspending a device body in free traveling through a guide roller, and finishing-working a welded bead part by a working head which is mounted in free floating on the device body. CONSTITUTION:A guide rail 8 for automatic welding is installed through an angle member on a liner 7 installed on the inner wall of a large-sized container, and a worm pinion 10 revolved by a driving part 3 installed on a device body is meshed with a rack 9 formed on the inner peripheral surface. The device body is equipped with a guide roller part 2 which supports a body in free traveling in the state nipping the guide rail 8 from the upper and lower, and a cutter head (or grinder head) 6 is installation-supported through floating supporting device 4. The cutter head 6 is floating-supported for the body 1, and can be shifted in the perpendicular direction for the liner 7 in correspondence to the strain of the liner 7, and the bead of the liner welded part is ground by the operation of the cutter head 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bead finishing device which is applied to a liner welded portion on the inner wall of a large container.

[0002]

2. Description of the Related Art FIG. 8 is an explanatory view of a liner on the inner wall of a large container, in which (a) is a liner assembly drawing and (b) is a developed view of a part thereof.

In FIG. 8A, the liner 7 is assembled by welding a number of unit plates 61 on site. And the welding is mechanized using an automatic welding machine,
The bead portion 62 after welding needs to be processed and finished for X-ray inspection as shown in FIG.

FIG. 9 (a) is a sectional view of a bead portion after welding,
(B) shows a final processing drawing.

In FIG. 9 (a), the head portion of the bead portion 62 removes the removed portion 63 leaving Δt on the surface of the liner 7, and the edge portion has the removed portion 64 as shown in FIG. 9 (b). To remove and smooth the surface. Conventionally, these removed parts 6
For 3, 64, the worker manually removed the work on the scaffold with a grinder.

[0006]

By the way, as described above, since the processing and finishing of the bead portion after the conventional welding were performed manually, there were some problems as described below.

(1) Work efficiency is poor due to manual work.

(2) Since the work is performed on the scaffold, the work environment is bad and there is a danger.

(3) Due to the manual work, it is necessary to pay close attention to the sliding of the grinder, and the finishing accuracy varies depending on the operator.

(4) The working environment is very bad due to the dust of the grinder.

It is an object of the present invention to provide a new large container liner weld bead finishing device which solves the above-mentioned problems.

[0012]

As a structure for achieving the above object, a large container liner weld bead finishing device of the present invention is provided on a large container liner with a cutter head or a grinder head mounted by a floating support device. In a large vessel liner welding bead finishing device that has a main body that runs using automatic welding rails, combines the main body and cutter head during bead processing work, and uses the main body and grinder head together during edge finishing work The main body includes a guide roller unit, a driving unit, and a floating support device on a base plate, the cutter head includes an air motor, a cutter, and a guide roller, and a gap required for processing the bead unit is provided between the cutter unit and the liner surface. The grinder head is an air motor,
The grinder and the guide roller are provided, the grinder head is attached at an angle necessary for finishing the edge portion, and the cutter portion and the grinder portion are further provided with a dust collecting cover.

[0013]

Since the welding bead portion finishing device of the present invention is constructed as described above, it has the following actions.

(1) The cutter head moves along the rails for automatic welding while keeping a constant gap with the liner surface, and the floating support device allows the cutter to follow the strain of the liner to follow the bead portion. Process to a constant thickness.

(2) In the case of the grinder head, while keeping a certain inclination with respect to the liner surface, it moves in the same manner as in (1), the edge portion of the bead portion is obliquely shaped, and the inclination of the grinder head is changed. The other edges are shaped in reverse.

(3) During the work described in (1) and (2) above, a vacuum cleaner is attached to the cover provided on the cutter part or the grinder part to absorb chips and dust during processing.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS. FIG. 1 is an overall explanatory view of a welding bead finishing device according to the present invention, FIG. 2 is a rail laying diagram on a liner, and FIG.
Is an explanatory view of the main body guide roller portion, FIG. 4 is an explanatory view of the main body drive portion, FIG. 5 is an explanatory view of the floating support device of the head portion, FIG. 6 is an explanatory view of the cutter head, and FIG. 7 is an explanatory view of the grinder head. Show.

First, an outline of the entire structure of this apparatus will be described with reference to FIG. In FIG. 1, (a) is a combination view of a welding bead finishing device (main body + cutter head), (b) is a view taken along the line PP, and (c) is a view taken along the line QQ. .

In FIG. 1A, the main body 1 is composed of a guide roller portion 2, a driving portion 3 and a floating support device 4, and is attached to a base plate 5.

As shown in FIGS. 1B and 2, the main body 1 is held by two sets of guide roller portions 2 on a guide rail 8 for automatic welding provided on a liner 7 attached to the inner wall of a large container, and driven. The portion 3 is configured to travel along the guide rail 8.

A cutter head 6 is held on the floating support device 4.

A rack 9 is provided on the guide rail 8, and as shown in FIG. 1C, a worm pinion 10 connected to the gear mechanism of the drive unit 3 is meshed with the rack 9, and the worm pinion 10 is connected. The main body 1 is configured to run by rotating.

Therefore, as shown in FIG. 1A, the drive unit 3 is moved by an angle corresponding to the advance angle α of the worm pinion 10.
Is attached to the base plate 5 tilting with respect to the center line of the guide rail 8.

Next, the details of each of the above components will be sequentially described.

First, the concrete structure of the main body guide roller portion will be described with reference to FIG. 3. FIG. 3 (a) is a side view of the guide roller portion 2, and FIG. 3 (b) is an RR arrow view of the same. .

In FIG. 3A, the guide rail 8 is fixed to the liner 7 by an angle member 11.

The guide roller portion 2 has a fixed roller 12 and a movable roller 13 which are arranged to face each other with the guide rail 8 interposed therebetween. The movable roller 13 is slidably supported on the base plate 5 by a tension block 14 and a tension bolt 15. The base plate 5 is configured to be attachable to and detachable from the guide rail 8, and the holding force to the guide rail 8 can be adjusted by the bell spring 16.

The tension block 14 is constructed so as to move along a guide plate 17 fixed to the base plate 5 as shown in FIG. 3 (b).

Next, the specific structure of the sliding portion of the main body is shown in FIG.
Described in. FIG. 4A is a sectional view of the drive unit 3, FIG.
(B) shows the SS sectional view of the same figure.

In FIG. 4A, the drive unit 3 is a motor 1
8, a coupling 19 connected to the motor 18, a gear mechanism 20, a clutch 21, a bevel gear 22, and a cam plate 23.

Of these, the clutch 21, the bevel gear 22, and the cam plate 23 are the mechanisms required when the main body 1 is used for other purposes, and the clutch 2 is used when finishing the welding bead portion of the present invention.
1 is opened so that the cam plate 23 does not rotate. These mechanical parts are protected by a cover 24.

The gear mechanism 20 drives the worm pinion 10 via an idle gear 25 shown in FIG. 4 (b). The worm pinion 10 meshes with the rack 9 provided on the guide rail 8 as described above.

Motor 18, gear mechanism 20, clutch 21
Are supported by brackets 26, 27 and 28, respectively, and attached to the base plate 5.

Next, the specific structure of the floating support device for the head portion will be described with reference to FIG. FIG. 5A shows the floating support device 4.
5A is a plan view, FIG. 5B is a sectional view taken along line GG of FIG. 5A, and FIG. 5C is a sectional view taken along line HH.

In the figure, a floating support device for mounting and supporting a cutter head or a grinder head is a guide bracket 29, an arm 30, a cam follower 31, a tension shaft 3.
2. The fulcrum block 33.

In the sliding groove 34 of the guide bracket 29,
The slide hardware 35 of the cutter head 6 is fitted in the cutter head 6 so that the cutter head 6 can move up and down with respect to the paper surface of FIG.

As shown in FIG. 5 (a), one end of the arm 30 and the fork end of the slide hardware 35 together with the cam follower 3 are provided.
One end shaft penetrates and the other end is pin-supported by the bracket 36.

In the vicinity of the central portion of the arm 30, as shown in FIG.
As shown in (c), a guide metal piece 37 through which the tension shaft 32 penetrates is attached so as to be movable on the tension shaft 32, and the cam follower 31 is applied with an appropriate force by a coil spring 38, a flat spring 39, and a nut 40. It is adjusted so that it is pressed against the cam plate 23.

One end of the tension shaft 32 is the fulcrum block 3
3 is pin-supported, and the others are free ends.

Therefore, the cutter head 6 (that is, the slide metal piece 35) is floatingly supported with respect to the main body 1 as shown in FIGS. 1 (b) and 1 (c) described above, and the cutter head 6 is attached to the liner 7 as described later. The liner 7 can be moved in a direction perpendicular to the strain.

Next, the structure of the cutter head will be described with reference to FIG. FIG. 6A is a side view of the cutter head 6, FIG. 6B is a view taken along the line JJ of FIG. 6A, and FIG.
Indicates a cutter shape.

The cutter head 6 is for processing the surface of the weld bead 62 shown in FIG. 9A with a cutter 47 to a specified thickness Δt. The cutter head 6 comprises a motor 41, a bearing box 42, a gear box 43 and a cutter shaft 44. The slide hardware 35 described in FIG. 5 is fixed to the box 42, and the roller 45 is attached to the gear box 43.

The cutter shaft 44 is a bevel gear 4 mounted coaxially.
6, the power of the motor 41 is transmitted to the cutter 47 at the shaft end. The cutter 47 is provided with a cover 48 on the outer periphery thereof, and the cutting chips are discharged from a suction hole 49 of the cover and collected by a vacuum cleaner (not shown).

As shown in FIG. 6A, the roller 45 is set so that the gap between the cutter 47 and the liner 7 becomes Δt, and the surface of the bead 62 is processed as shown in FIG. Even if there is a distortion in the blade, it prevents the cutter 47 from being cut in combination with the action of the roller 45 and the floating support device 4 described above.
The gap Δt can be maintained.

Further, the construction of the grinder head to be mounted and used at the time of finishing the edge portion of the weld bead will be described with reference to FIG. 7 (a) is a side view of the grinder head, FIG. 7 (b) is a view taken along the line KK of FIG. 7 (a), and FIG.
(C) shows the action explanatory drawing which changed the grinder direction.

The grinder head is for finishing the welding bead 62 as shown in FIG. 9 (b). The holding bracket 51, the motor 52, the bearing box 53, and the grinder shaft 5 are used.
4 and the holding bracket 51 has a slide hardware 3
5 is attached and can be attached to the main body 1 by exchanging it with the cutter head 6 described above.

The motor 52 and the bearing box 53 are directly connected to each other and attached to the holding bracket 51 with a nut 55.
It is fixed like the X1 axis or the X2 axis as shown in (a).
Then, as shown in FIG. 7C, the welding bead upper edge is shaped in the case of the X1 axis and the lower edge is shaped in the case of the X2 axis.

The holding bracket 51 is provided with rollers 56, and the grinder 57 is always arranged at a constant distance from the liner 7. As in the case of the cutter head 6, the floating support device 4 causes the liner 7 to move. Follow the distortion of.

A cover 58 is provided on the outer peripheral portion of the grinder 57.
Is provided to absorb dust. Cover 58
When using with X2 axis, attach it by turning 180 °.

Although one embodiment of the present invention has been briefly described above, the present invention is not limited to the above embodiment, and various design changes can be made within the scope of the technical idea of the present invention. Also belongs to the technical scope of the present invention.

[0051]

As described above, according to the large container liner welding bead portion finishing device of the present invention, the following effects can be obtained, and safety and work efficiency can be improved, resulting in a significant cost reduction. Can be expected.

(1) Since the apparatus is run by using the guide rail for automatic welding, it is not necessary to perform a fine adjustment work by a person in a high place work.

(2) Since the processing and shaping of the weld bead portion are automatically performed by remote control, efficiency is improved, individual differences are eliminated, and labor is saved.

(3) By replacing and attaching the cutter head or grinder head to the main body, machining and shaping of the bead can be easily switched, and even if the liner is distorted, it can be automatically changed by the combination of the roller and the floating support device. Can be processed and shaped according to the purpose.

(4) Covers are provided on the cutter and grinder to connect the vacuum cleaner to collect chips and dust, thus improving the working environment.

[Brief description of drawings]

FIG. 1 is an overall schematic configuration diagram of a welding bead finishing device according to an embodiment of the present invention, in which (a) is a combination view of the devices and (b) is a schematic view.
Is a P-P arrow view, and (c) is a Q-Q arrow view.

FIG. 2 is a diagram of laying rails on a liner according to the present invention.

3A and 3B are configuration diagrams of a main body guide roller portion in the device of the present invention, in which FIG. 3A is a side view and FIG.

FIG. 4 is a configuration diagram of a main body drive section in the device of the present invention,
(A) is sectional drawing, (b) is SS sectional drawing of the same figure.

5A and 5B are configuration diagrams of a floating support device for a head portion in the device of the present invention, FIG. 5A is a plan view, FIG. 5B is a sectional view taken along line GG in FIG. 5, and FIG. 5C is a sectional view taken along line HH. .

6A and 6B are configuration diagrams of a cutter head in the device of the present invention, in which FIG. 6A is a side sectional view, FIG.
(C) is a cutter shape drawing.

7A and 7B are configuration diagrams of a grinder head in the device of the present invention, in which FIG. 7A is a side sectional view, FIG.
(C) is an explanatory view of an operation in which the grinder direction is changed.

8A and 8B are explanatory views of a liner of a large container, FIG. 8A is a liner assembly view, and FIG. 8B is a partially developed view of the same.

FIG. 9 is an explanatory view of processing and shaping of a liner weld bead portion,
(A) is a cross-sectional view of a bead portion after welding, and (b) is a final processed view of the bead portion.

[Explanation of symbols]

 1 main body 2 guide roller part 3 drive part 4 floating support device 5 base plate 6 cutter head 7 liner 8 guide rail 9 rack 10 worm pinion 12 fixed roller 13 movable roller 14 tension block 17 guide plate 19 coupling 20 gear mechanism 26, 27, 28 Bracket 29 Guide Bracket 30 Arm 31 Cam Follower 32 Tension Shaft 33 Support Point Block 34 Sliding Groove 35 Slide Hardware 44 Cutter Shaft 45, 46 Roller 47 Cutter 48 Cover 49 Suction Hole 51 Holding Bracket 54 Grinder Shaft 57 Grinder 61 Unit Plate 62 Weld Bead 63 , 64 removed

Claims (1)

[Claims] 1. A cutter head or a grinder head is mounted by a floating support device, and has a main body that travels by using an automatic welding rail provided in a large container liner, and the main body and cutter head are combined during bead processing work. In a finishing device for a large container liner weld bead that uses a main body and a grinder head in combination at the time of edge portion finishing work, the main body has a guide roller portion on a base plate,
The cutter head includes a drive unit and a floating support device, the cutter head includes an air motor, a cutter, and a guide roller, and is fixed so as to maintain a gap required for processing the bead portion between the liner surface and the grinder head. Is equipped with an air motor, a grinder, and a guide roller, the grinder head is attached at an angle necessary for finishing the edge portion, and a dust collecting cover is further provided on the cutter portion and the grinder portion. Weld bead finishing device.