JPS58832B2 - induction heating device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to induction heating for heating only the longitudinal end of an object to be heated, and uses a vertical heating coil and a clamp and walking beam method as a means of conveying the object. This method adopts a combination method.

In conventional induction heating devices of this type (hereinafter referred to as partial heaters), the heating coil is installed horizontally, and the objects to be heated are heated by pushing the inside of the heating coil one by one with a pusher, or by heating the object by pushing the inside of the heating coil one by one with a pusher, or by placing the heating coil between the upper and lower conveyors. There was a method of sandwiching the object to be heated and passing it through the coil.

The disadvantage of these methods is that the coil is installed horizontally, so scale generated from the heated object may accumulate inside the coil and cause short circuits, or the refractory inside the coil may bulge and crack on the floor, or it may crack on the ceiling. They were also cracking and falling off.

Regarding conveyance, the push-button method has disadvantages in that the object to be heated may buckle within the coil, and the object to be heated may slide on the refractory material, damaging the refractory material.

In addition, in the method of sandwiching the heated object between conveyors, the heated object is
There was a drawback that reliable transportation was not possible because each book could not be clamped sufficiently.

The present invention has been made to eliminate these drawbacks.

In other words, the features of the present invention are that by installing the heating coil vertically, there is no accumulation of scale, which reduces the chance of ground faults or short circuits in the coil; Not only is it stronger and less likely to fall off, but the inner refractory of the coil can be lined with a flexible heat-resistant sheet (for example, Khao Wool Blanket) rather than castable, and it has the advantage of being easy to repair.

On the other hand, by adopting a clamp and walking beam method for transporting the heated objects into the heating coil, this method clamps several heated objects at the same time and moves them one pitch, and the nationally designated clamping device moves several of them. The clamping device moves the object to be heated, releases the object to be heated, returns to its original position, clamps several objects again, and moves the object again.The feature is that the mounting pitch of the object to be heated can be reduced. The structure is simple because several pieces can be chucked at the same time, and springs are installed on both sides of the chucking part, so even if the diameter of the object to be heated changes slightly, the structure can be simplified. It has features such as being able to be clamped securely.

An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 shows a conventional system. FIG. 2 shows a view taken along arrows 1--2 in FIG.

In this method, the object to be heated 2 is conveyed in the direction of the arrow while rolling and sliding on this refractory material, and the shaded area is heated to a predetermined temperature.

Note that mechanisms such as buttons are omitted. FIG. 3 shows a front view of an embodiment of the present invention. The object to be heated 2 is conveyed sequentially from the bottom to the top as shown by the arrows, and is heated by induction with the heating coil 1 with the hatched part placed in the vertical direction. It is.

In addition, FIG. 4 is an IV-IV arrow view of FIG. 3, and FIG.
In FIG. 4, the heated part 3 2x is a V-shaped pedestal.

First, the object to be heated 2 placed on the pedestal 3 is pushed in the direction of the arrow by a button (not shown), and its tip hits a stopper (not shown) and stops.

In this state, the walking clamper 5 clamps the heated material 2 and moves upward by one pinch.

Next, the fixed clamper 4 clamps the object to be heated 2a that has moved.

Then, the walking clamper 5 releases (opens) the clamp on the material to be heated 2a, descends one pitch to the original position in that state, and clamps the next material 2 that comes in, and at the same time also clamps the material 2a.

At the same time, the fixed clamper 4 releases 2a, and the walking clamper 5 rises by one pitch.

Then, 2a is placed at the position of 2b, 2 is placed at the position of 2a, and 1 is placed at the position of 2a.
It means that we have progressed step by step.

By repeating the above operation, the object to be heated 2 passes through the heating coil 1, and the heated material 2X comes out of the heating coil 1. The material 2X that comes out is placed in another clamper (not shown). It will be removed.

In this way, the fixed clamper 4 only clamps and releases the material at that position without moving the entire clamper, while the walking clamper 5 not only clamps and releases the material, but also clamps and releases the material 2. It can also be moved up and down by clamping and moving upward one pitch, and releasing and returning one pitch to the original position.

Although the heating coil 1 is not shown, it is attached to a pedestal and there is no need to worry about it falling over.

1a is a lead terminal of a heating coil.

Reference numeral 1b represents the inner wall of the heating coil, which may be made of refractory cement, or may be lined with a heat-resistant plate or sheet.

Because the coil is vertical, scale does not fall downward and accumulate inside, and the refractory material is strong and difficult to fall off.

Next, details of the method for conveying the heated material 2 will be explained.

FIG. 5 shows the structure of the fixed clamp part 1 in the direction of the arrows ■--■ in FIG.

The fixed clamper does not move up and down, but merely repeats the operation of clamping and releasing the heated material 2 at the same position.

Reference numeral 6 denotes a holding fitting for holding the material to be heated 2, which has several V-shaped grooves so that several pieces can be held at the same time.

On the other hand, 10 is also a holding metal fitting for holding the material to be heated 2, and these metal fittings are individually supported by a frame 12 via springs (disc springs in the example) 11.

Reference numeral 7 denotes a guide shaft attached to the holding fitting 6 or the frame 12, which can be slid left and right using a bearing 8 as a guide.

In this way, the holding fittings 6 and 10 are moved horizontally by a driving source such as the cylinder 9 to clamp or release the material to be heated.

The major point of the present invention is that one of the holders 10 is individually supported via the springs 11, so even if the diameters of the heated materials are slightly different, they can be reliably clamped.

Another feature is that the left and right holding fittings 6 and 10 are both movable.The reason for this is that in a method where one is fixed and only one is moved to clamp, the object to be heated cannot be held directly above the object using the walking clamper 5, which will be described later. This is because it will hit the V-groove and become impossible to lift.

If the object cannot be conveyed directly above, the object to be heated will hit the inner surface of the heating coil, which will be undesirable.

Note that 10 is designed to be able to slide without rotating (not shown).

FIG. 6 shows details of the walking clamper 5, taken along arrow VI-VI in FIG.

This has the function of the fixed clamper shown in FIG. 5, and also has the function of moving the entire mechanism up and down by the pitch of the material to be heated.

That is, 13 is a frame that supports the entire clamper, and a guide shaft 15 is connected to a bearing 1 using a cylinder 6 as a driving source.
4 as a guide, the entire frame 13, that is, the entire clamper section, moves up and down.

Therefore, the movement of the walking beam clamper is as shown in FIG.

The material to be heated is clamped in the 1st action, the material to be heated is clamped in the 2nd action and raised 51 pitches, and the clamp is released in the 3rd action.At this time, the heated material is clamped by the fixed clamper)
, 4 returns to the original position, and by repeating this, the object to be heated sequentially moves upward one pitch at a time from the bottom,
During this time, the material to be heated is heated by induction, and the material to be heated that comes out of the heating coil is completely heated and is taken out by another clamp mechanism.

As described above in detail using one embodiment, according to the induction heating device of the present invention, by installing the heating coil vertically, scale accumulation is eliminated, and the fear of coil short circuits and ground faults is eliminated. A fixed clamp and walking beam method are used as a means of transporting the heated object, so
It has a simple configuration that enables reliable lamp operation, and it is possible to reduce the mounting pitch of the heated material and improve heating efficiency, which is far superior to conventional similar devices and has many practical effects. It is.

[Brief explanation of drawings]

Figure 1 is a front view of the conventional device, and Figure 2 is the ■- of Figure 1.
■An arrow view, FIG. 3 is a front view showing an embodiment of this invention,
Figure 4 is a view from IV-TV in Figure 3, Figure 5 is a view from ■-v in Figure 3, Figure 6 is a view from VI-VI in Figure 3, and Figure 7 is a walking view. FIG. 3 is a diagram for explaining the movement of a beam clamper. In the figure, 1 is a heating coil, 2 is a heated material, 3 is a pedestal, 4 is a fixed clamper, and 5 is a walking clamper. Note that the same reference numerals in the drawings indicate the same or equivalent parts.

Claims (1)

[Claims] 1. In an induction heating device that heats a part of a material to be heated, heating coils are installed vertically, and a walking clamper is used to clamp and release several coils at the same time to convey the material to be heated. . An induction heating device comprising a fixed clamper that fixedly supports a material to be heated when the walking clamper is released. 2. The induction heating device according to claim 1, wherein the clamper has a holding fitting corresponding to each of the materials to be heated, and a spring for following the diameter of the material to be heated.