JPH11285769A - Device for supplying work joining different kind of steel material into electric forged contracting device or the like - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the feeding of a work into an electric forged contracting device, etc., while directing a martensite steel material side upward in the work formed by joining a non-magnetic austenite steel material and a magnetic martensite steel material. SOLUTION: In a supplying device for supplying a joined work 1 composed of a magnetic material 1b and a non-magnetic material 1a into an electric forged contracting device, etc., a sensor 22 for detecting whether a part has magnetism or not by approaching the upper end part of the joined work 1 held with a holding means 13 is provided near the holding means 13 (finger) feeding the joined work 1 into the electric forged contracting device, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for joining a magnetic material made of, for example, martensitic steel and a non-magnetic material made of austenitic steel, which are joined to each other, to an electric forging device by mistake. To a supply device that is not supplied in the opposite direction.

[0002]

2. Description of the Related Art For example, among engine valves, there is a valve of a dissimilar steel material joining type in which an umbrella portion which becomes high in temperature is formed of austenitic steel and a shaft portion having a small heat load is formed of martensite steel.

As shown in FIG. 3, such an engine valve comprises an austenitic steel material (1a) and a martensitic steel material.
After joining the end faces of (1b) to each other to form a rod-shaped first work (1), the work is fed into an electric forging device, and a second work having an enlarged diameter portion (2a) on the austenitic steel material (1a) side. A work is formed, the second work (2) is hot forged, formed into a third work (3) having substantially the same shape as the engine valve, and then machined to produce a product.

FIG. 4 schematically shows a conventional apparatus for supplying the first work (1) to the electric forging apparatus shown in FIG. 5, and a storage box (4) for the first work (1). Has a front opening, and an inclined plate (5) which is inclined forward and downward is provided in the inside thereof.
An elevating plate (6) for discharging a large number of first works (1) stored in (5) one by one is provided.

[0005] Immediately below the front end of the storage box (4), there is a first work.
The supply device (7) of (1) is installed, and the bearing part (8) at the base end thereof
The rotating arm (9) pivotally supported at the left end is always an inclined plate
There is a horizontal waiting just below (5), and when the first work (1) is supplied, it is turned upward by 90 °. A pair of V-shaped work receivers (10) are fixed to both ends of the upper surface of the horizontal rotating arm (9), and a stopper (11) is erected near the bearing (8). ing. (12) is a support base for the rotating arm (9) in a horizontal state.

Although not shown, a finger (13) for detachably gripping the first work (1) by the biasing force of a spring is provided at a location above the bearing portion (8). Where
A first air cylinder (14) pointing downward is provided, respectively. In the above-mentioned supply device, the first work (1) discharged from the storage box (4) receives the work of the rotating arm (9).
When riding on (10), as shown by the imaginary line in FIG.
(9) is rotated upward by 90 °, and the central portion of the first work (1) is automatically pushed open by the finger (13) and is gripped.

Next, the first air cylinder (14) is extended, and the first work (1) is pushed down until the lower end abuts on the stopper (11) to have a predetermined length. It returns to the standby position indicated by the solid line in FIG.

Next, the finger (13) moves, and the first work (1) is sent to the electric forging device (15) shown in FIG.
By energizing between the upper and lower electrodes (16) and (17), the diameter of the austenitic steel material (1a) side is increased, and the second work (2) is formed. In FIG. 5, (18) is an electrode clamp, (19) is a second air cylinder, (20) is a push-up rod, and (21) is a power supply.

[0009]

However, in the conventional feeder described above, even if the austenitic steel (1a) and the martensitic steel (1b) are inserted into the storage box (4) with their sides turned in opposite directions, this is not the case. Since it is difficult to visually check the material, the material may be directly sent to the electric forging device (15) to form a large-diameter portion on the martensitic steel material (1a) side.

The present invention has been made in order to solve the above-mentioned problems.
It is an object of the present invention to provide a work supply apparatus capable of checking the orientation of a material of each first work and preventing a defective product from being formed beforehand.

[0011]

According to the present invention, an object of the present invention is to provide a supply device for supplying a joint work made of a magnetic material and a non-magnetic material to an electric forging device or the like. The problem is solved by providing a sensor for detecting the presence or absence of magnetism of the portion by bringing the one end portion of the joined work held by the holding means close to the gripping means for feeding the joined work to the like.

[0012]

1 and 2 show a supply apparatus according to the present invention. Members similar to those of the above-described conventional apparatus are denoted by the same reference numerals, and detailed description thereof will be omitted. .

A first work supported by a rotating arm (9) is provided between the finger (13) and the first air cylinder (14).
When (1) is gripped by the finger (13), the magnetic sensor (22) to which the upper end of the vertical first work (1) can be loosely fitted,
It is attached to a bracket (not shown). Magnetic sensor
(22) is connected to the alarm transmitter (23) via a lead wire (24).

In the above embodiment, as in the prior art, the rotating arm (9) is provided with the first work (1) discharged from the storage box (4).
, The first work (1) is clamped by the fingers (13), and at the same time, the upper end of the first work (1) is loosely fitted into the magnetic sensor (22). .

At this time, if the upper end of the first workpiece (1) is austenitic steel (1a) as usual, this steel is a non-magnetic material, so that the magnetic sensor (22) does not operate and the finger ( 13) moves as usual, and the first work (1) is sent to the electric forging device (15) to form the second work (2). In the unlikely event that the first work (1) in the opposite direction is mixed into the storage box (4), the finger (1
When gripped by 3), the martensitic steel is a magnetic material, so the magnetic sensor (22) is activated, and a signal generated from this activates the alarm transmitter (23) to move the finger (13). To stop automatically.

Therefore, the first work (1) is not sent to the electric forging device, and the formation of defective products is prevented beforehand. The device of the present invention is not limited to the first work (1) for manufacturing an engine valve, but is also effectively applied to discriminate a joint work between different magnetic materials and non-magnetic materials. be able to.

[0017]

According to the present invention, when a joint work made of, for example, an austenitic steel and a martensitic steel for forming an engine valve is gripped in the opposite direction by the gripping means, the sensor is activated and the work is electrically forged. Since the supply to the compression device or the like is stopped, it is possible to prevent the formation of defective products.

[Brief description of the drawings]

FIG. 1 is a front view showing an embodiment of the present invention.

FIG. 2 is also a side view.

FIG. 3 is a front view showing a manufacturing process of the engine valve.

FIG. 4 is a front view of a conventional work supply device.

FIG. 5 is a partially cutaway front view of the electric forging apparatus.

[Explanation of symbols]

 (1) 1st work (1a) Austenitic steel (1b) Martensite steel (2) 2nd work (2a) Enlarged section (3) 3rd work (4) Storage box (5) Inclined plate (6) Lifting plate (7) Supply device (8) Bearing part (9) Rotating arm (10) Work receiver (11) Stopper (12) Support table (13) Finger (14) First air cylinder (15) Electric forging device (16 (17) Electrode (18) Clamping tool (19) Second air cylinder (20) Push-up rod (21) Power supply (22) Magnetic sensor (23) Alarm transmitter (24) Lead wire

Claims (1)

[Claims] 1. A supply device for supplying a joint work made of a magnetic material and a non-magnetic material to an electric forging device or the like, comprising: An apparatus for supplying a joint work of dissimilar steel to an electric forging device or the like, characterized in that a sensor is provided for detecting the presence or absence of magnetism of the joint work by being brought close to one end of the joint work held by the means.