JPS6056433A - Induction heating device - Google Patents

Abstract

PURPOSE:To enable application of lubricant on an object to be heated without using a complicated conveyor by providing an outflow controlling wall that restrains flowing out of lubricant supplied to the object to be heated from the object. CONSTITUTION:The object to be heated 1 is carried on a slat conveyor, and sent by pressure into a preheating coil 14 by a pinch roller, and after raising temperature, sent into an outflow controlling tank 15 by a supporting device 16 through a mouth piece 154. As the object to be heated 1 passes in lubricant 9 in the outflow controlling tank 15, the lubricant 9 is coated on the surface of the object to be heated 1. A part of lubricant 9 supplied to the outflow controlling tank 15 flows out through a gap between the mouth piece 154 and the object to be heated 1. However, the flowing of remaining lubricant 9 to outside of the outflow controlling tank 15 is restrained by each controlling end wall 151, each controlling side wall 152 and a controlling bottom plate 153.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an induction heating device that supplies lubricant to a metal to be heated by a heating coil.

[Prior art] Generally, the metal to be heated (hereinafter referred to as the object to be heated) is heated to 300°C or more.
Warm forging, which involves heating to 900°C for forging, has the problem that precision forging is not possible due to problems such as poor fitting.To solve this problem, lubrication such as lubricating oil is applied to the surface of the heated object. It is common practice to forge after applying the agent.

In this case, if the above-mentioned lubricant is heated immediately after application, the vaporized components of the lubricant may adhere to the furnace wall of the heating coil that constitutes the induction heating device, damaging the coil. The heated body is heated to 100°C to 300°C, a lubricant is applied to the heated body, and after the vaporized components of the lubricant are evaporated by the heat of the heated body, it is heated by a heating coil for warm forging. is normal.

An example of a conventional layout device including the above-mentioned preheating, furnace, lubricating oil application means, heating coil, etc. will be explained with reference to FIGS. 1 and 9P and 2. In the figure, (1) is the object to be heated, (2) is the first material supply device that continuously discharges the object (1) to be heated one by one, and (3) is the material feed device (2).
), (4) is a pinch roller that pressure-feeds the heated object (1), (5) is a heating coil, and (6) is a slat conveyor (3). ), a pinch roller (4), and a heating coil (5), all of which are aligned units. (7) is a forging press, (
8) is the first conveyor, and as shown in FIG. 2, a complex structure having a descending section (81), a flat section (82), and an ascending section (83) is used. (9) is a lubricant such as lubricating oil, (10) is a bathtub filled with lubricant (9),
(11) is a preheating furnace, which normally uses heavy oil to heat the object to be heated (1). (12) is the linear second
The material is passed through a preheating furnace (11) by a conveyor, and (13) is a second material supply device.

Next, the operation will be explained. The object to be heated (1), which is continuously supplied one tree at a time from the second material supply device (13), is passed through a preheating furnace (11) by a linear second conveyor (12) to a temperature of 100°C to 300°C. heated to. Thereafter, the object to be heated (1) is carried into the bathtub (10) by the descending part (81) of the special first conveyor (8), which is different from other linear conveyors, and then is carried into the bathtub (10) by the flat part (82). ) is passed through the lubricant (9) to apply the lubricant (9), and then the heated body (1) is moved to the bathtub (
10) The material is supplied to the material supply device (2) of the apprentice 1, which is carried out.

The first material supply device (2) is connected to the second material supply device (13
), the objects to be heated (1) are successively sent one by one onto a linear slat conveyor (3) and are forced into the heating coil (5) by pinch rollers (4), but the process up to this point is lubricated. The vaporized component of the agent (9) is dried by the heat possessed by the heated object (1), and the lubricating particles are attached to the heated object (1). After being heated to 10°C, the product is sent to a forging press (7)K, where the lubricating particles play a role of lubrication and precision forging is performed.

The conventional induction heating device described above includes a step of preheating the object to be heated (1), a step of applying a lubricant (9) to the object to be heated (1), and a step of heating the object to be heated (1). In the step of
2), the device is configured to be transported in different directions, which increases the number of components, complicates the structure, and increases line space. ) and lubricating oil (9).
) is coated, and also serves as a first conveyor (8) for carrying out the object to be heated (1) from the bathtub (10).
The drawback is that the conveyor has to have a complicated structure.

[Summary of the invention]

In view of the above-mentioned conventional circumstances, it is an object of the present invention to provide an induction heating device equipped with a coating means that enables lubricant to be coated without using a conveyor with a complicated structure in the conventional device. A lubricant outflow suppressing wall is provided between the heating coil and the preheating coil near the lubricant supply port that supplies lubricant to the heated object, and also close to the heated object, and this outflow suppressing wall This prevents the lubricant supplied from the lubricant supply port to the heated object from flowing out from above the heated object.

[Embodiments of the invention]

An embodiment of the present invention will be described below with reference to FIGS. 3, 4, and 5. In the figure, (1) to (7L (9)) are the same as the conventional one, so their explanation will be omitted.

(14) uses a preheating coil to heat the heated object (1) to 100°C to 3°C.
Induction heating to 00°C. (15) is an outflow suppression tank that includes a control end wall (151) separated from each other by a predetermined distance, a control side wall (152) separated by a predetermined distance from each other, and a control bottom opening (15).
53), and in order to minimize the amount of lubricating oil (9) that flows out, for example, a cylindrical heated body (
The end face of a cylinder with an inner diameter slightly larger than the diameter of 1) or a C-shape with a predetermined length in the axial direction (
154) on the inner side of each end wall (151). In addition, when the dimensions of the object to be heated (1) change, the suppression end wall (151) suitable for the dimensions can be changed. (16) is a preheating coil (14) and a heating coil (5
) A supporting device for transporting a heated object (1) consisting of two parallel rails arranged in a substantially straight line between
The collection tub (17) provided along the opening at the bottom of the C-shaped cap (154) is a collection tub (18) for collecting the lubricating oil (9) that has flowed out from the spill suppression tank (15).
The lubricating oil (9) collected in 7) is transferred to the lubricating oil tank (19).
The lubricating oil recovery pipe (20) is the lubricating oil tank (1
The lubricating oil (9) stored in the lubricating oil supply pipe (2) is
1) Pump that sends out water to the outflow control tank (15) (22)
This is the lubricating oil supply port for lubricating.

Preheating coil (14), heating coil (5) and base (154)
) are located approximately in a straight line.

The outflow suppression tank (15) is attached to the recovery tub (18) (not shown).

In operation, heated objects (1) are aligned one by one in a fixed direction from the first material supply device (2) and discharged, and the discharged heated objects (1) are transported on a slat conveyor (3). and is forced into the preheating coil (14) by the pinch roller (4). The heated object (1) whose temperature has been raised to 100°C to 300°C by the preheating coil (14) is discharged from the preheating coil (14) and transferred to the support device (16) on one side (154).
It is fed into the outflow suppression tank (15) through the inside, and is transferred to the outside of the outflow suppression tank (15) through the other mouthpiece (154), and then supplied to the heating coil (5). Therefore, in the spill suppression tank (15), since the heated object (1) passes through the lubricating oil (9) supplied to the spill suppression tank (15), the lubricating oil (9)
is applied to the surface of the object to be heated (1).

By the way, the lubricating oil (
Part of the lubricating oil (9) flows out through a small gap between the base (154) and the heated object (1), but the remaining lubricating oil (9)
) are prevented from flowing out of the outflow suppression tank (15) by each suppression end wall (151) and each suppression side wall (152).Of course, as a result of this suppression, lubricating oil (9) is prevented from flowing out of the spillage suppression tank (15). (15) overflows from the spill suppression tank (15).This overflowing lubricating oil (9) and the nozzle (15)
Lubricating oil (9) leaked from the gap between the heated body (1) and the heated body (1).
) falls into the collection bathtub (17) and is collected. The recovered lubricating oil (9) is stored in a lubricating oil tank (19) via a recovery pipe (18), and is passed through a lubricating oil supply port (21) by a pump (20) to a lubricating oil supply port (2).
2) is again supplied to the outflow suppression tank (15).

On the other hand, the heated object (1) coated with lubricating oil (9) and discharged from the spill suppression tank (15) is heated by the preheating coil (14) until it reaches the heating coil (5). 9
) is evaporated and only the lubricating particles are attached to the heated object (1
), so the heating coil (5)
After being heated to a predetermined temperature (300 DEG C. to 900 DEG C.) inside, it is sent to a forging press (7) where the lubricating particles act as lubrication and precision forging is performed.

By doing the above, the conventional system was configured to transport preheating, lubrication, and heating in different directions, but it can now be configured in one direction, reducing the number of equipment components and reducing the number of line components. Space becomes smaller. Further, since the distance between the preheating coil (14) and the heating coil (5) is shortened, the temperature drop of the heated object (1) is reduced, and an energy-saving device can be obtained. In addition, since the preheating coil (14), outflow suppression tank (15), and heating coil (5) are on the same path line, troubles during transportation due to changes in the size of the heated object (1) are reduced, and the dummy bar is There is an advantage that the object to be heated (1) can be entirely discharged to the forging press (7) while heating the preheating coil (14) and the heating coil (5) by pressing.

In the above embodiment, the case where the cap (154) extends toward the inside of the end wall (151) is illustrated, but the cap (154)
The same effect as in the above embodiment can be obtained when the end wall (151) extends toward the outside of the end wall (151). Furthermore, depending on the thickness of the end wall (151), the cap (164) may not necessarily be necessary.

Furthermore, if the support device (16) in the outflow suppression tank (15) is bent upward or downward, the lubricating oil (9) can be easily applied to the end surface of the heated body <1) at the bent portion.

〔Effect of the invention〕

As described above, according to the present invention, as a lubricant application means,
A flow-out suppression wall is provided near the lubricant supply port and close to the heated object to prevent the lubricant supplied to the heated object from flowing out from above the heated object, so it is not possible to use the lubricant as in conventional equipment. This has the effect of making it possible to apply lubricant to the heated object without using a complicated conveyor.

[Brief explanation of drawings]

1 and 2 are diagrams showing a conventional induction heating device, in which FIG. 1 is a plan view, FIG. 2 is a sectional view taken along the line ■-■ in FIG. 1, and FIG. 5 to 5 are diagrams showing an embodiment of the present invention, FIG. 3 is a side view, FIG. 4 is an enlarged sectional view of the ■ part in FIG. 3, and FIG. It is a perspective view which expands and shows a part. In the figure, (1) is the metal to be heated, (5) is the heating coil,
(9) is the lubricating oil, (14) is the preheating coil, (151) is the outflow prevention end wall, (152) is the outflow prevention 1 side wall, (
153) is the outflow suppression bottom plate, (16) is the support device, (22)
) is the lubricant supply port. Note that the same reference numerals in the figures indicate the same or equivalent parts. Agent Masuo OiwaFigure 1Figure 2Figure 3Figure 4Figure 5n

Claims (1)

[Claims] a heating coil, a preheating coil provided before the heating coil; a heating coil disposed approximately in a straight line between the heating coil and the preheating coil; heated by both the coils; A support device that supports a plurality of heated metals to be transferred, a lubricant supply port that supplies lubricant to the heated metals between the heating coil and the preheating coil, and a lubricant supply port near the lubricant supply port. An induction heating device equipped with an outflow suppression wall that suppresses the above-mentioned overflow.