JPH0253144B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a heating device for a cylindrical insert fitting loaded into a mold of a die-casting machine.

(Prior Art) Generally, when die-casting an engine cylinder block from aluminum, a cast iron sleeve is loaded into a mold of a die-casting machine, and then molten aluminum alloy is poured into the die-casting machine.

The cylindrical insert fitting, such as a sleeve, is held by a loading device, and is preheated by a heating device such as a high-frequency heating coil or an atmosphere furnace before being set in a mold.

(Problem to be Solved by the Invention) By the way, in the preheating stage, there is no problem if there is only one metal insert, but when there are multiple metal inserts, such as in an in-line cylinder engine, each cylindrical metal insert has to be heated uniformly. In addition, there are problems such as the fact that the metal fittings have to be re-preset when setting the caster in the casting machine after preheating, which takes time and makes it difficult to set the caster efficiently.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a cylindrical insert heating device that efficiently and uniformly heats a plurality of cylindrical insert metal fittings, and that can be easily attached and detached to ensure efficient setting.

(Means for Solving the Problems) In order to achieve the above object, the present invention arranges in series a plurality of setting jigs 51 each having a positioning pin 52 with respect to the cylindrical insert loading device 2, An elliptical high-frequency heating coil 8 is provided on each of the setting jigs 51 to heat the cylindrical insert fittings S, respectively, and each of the setting jigs 51 is rotated when heating each cylindrical insert fitting S. A driving device 53 is provided to do this.

(Function) A plurality of cylindrical insert fittings S are placed in series in the elliptical high-frequency heating coil 8, and the drive device 53
Since each metal fitting S is heated while being rotated, a plurality of metal fittings S can be uniformly heated efficiently in a short time.

Furthermore, the attachment and detachment of the metal fittings S to and from the setting jig 51 can be performed reliably and efficiently using the positioning pins 52, and presetting when setting into a mold can be easily performed.

(Example) Examples will be described in detail below based on the accompanying drawings.

In FIG. 1, reference numeral 1 denotes a transfer robot, and around this transfer robot 1 there are an insert fitting supply section 4, an insert fitting heating device 5, and a vertical casting machine 6.
are arranged, and the insert fitting supply section 4 and the vertical casting machine 6 are arranged facing each other.

Four cylindrical insert fittings S... which form the cast iron cylinder sleeve of an in-line four-cylinder engine are set on a setting jig (not shown) of the insert fitting supply section 4, and these four cylindrical insert fittings S...
is held by the transfer robot 1 and sent to the insert fitting heating device 5. The metal fittings S... preheated by the heating device 5 are held by the robot 1 again, and then placed in the fixed mold 6 shown in FIG. 2 of the vertical casting machine 6.
1 and the movable mold 63, and the fixed mold 61
set above. Furthermore, the cylinder block B after casting is held by the robot 1, taken out from the casting machine 6, and delivered onto a product delivery section 7 disposed ahead of the metal fitting supply section 4.

The transfer robot 1 is as shown in FIGS. 2 to 4, and a horizontal guide rail 13 is mounted on a rotatable post 12 by a drive device built into a machine base 11.
is fixedly installed, and a slider 14 is installed in the guide rail 13 so as to be horizontally movable. The slider 14 is moved by a motor 15, a rack 16, and a pinion 17 along a guide groove 131 formed in the horizontal direction. , 18, an arm 19 is pivotally supported. Furthermore, a cam roller 181 that engages with the guide groove 131 is provided at the intermediate portion of the front link 18, and a cam groove 132 that slopes downward is provided at the tip of the guide groove 131. This cam groove 13
When the cam roller 181 is engaged with the slider 2, the arm 19 moves up and down with respect to the slider 14 via the parallel links 18, 18.

The arm 19 of the transport robot 1 is provided with an insert fitting loading device 2 and a product unloading device 3.

That is, as shown in FIGS. 5 and 6, arm 1
A vertical guide rail 21 is fixed to the tip of the insert head 9, and an insert head 22 is attached to the guide rail 21.
built in so that it can be raised and lowered freely. The insert head 22 is moved up and down by a cylinder piston device 23, and supports four collect chuck holders 24 in series in a floating manner along its longitudinal direction. A collect chuck 2 for clamping the inner circumferential surface of the cylindrical insert fitting S is provided at the lower part of the holding body 24.
5 is provided.

Further, at the lower end of a piston rod (not shown) that forms the axis of the holder 24 in which a cylinder piston device (not shown) is built-in, a setting jig for the insert metal supply section 4 and a setting jig 51 for the insert metal heating device 5 are fixed. A guide portion 29 that engages with positioning pins 52 . . . , 62 . . . provided on the mold 61 is formed.

In this way, left and right clamp arms 31, 31 for clamping both sides of the cylinder block B, which is a product, are arranged on both sides of the four collect chuck holders 24 provided in series on the insert head 22. 31, 31 as the arm 1
It is pivoted at the tip of 9. The pair of clamp arms 31, 31 are operated by a cylinder piston device 32.

On the other hand, the insert fitting heating device 5 is constructed as shown in FIGS. 7 and 8.

That is, four setting jigs 51... are arranged in series, and a rotating shaft 54... is connected to the lower part of each jig 51.... The four rotating shafts 54 are provided with gears 55 that mesh adjacent to each other, and are supported by a gear case 56. Furthermore gear case 5
6. A joint 57 is attached to one rotating shaft 54 that protrudes downward.
The jig 51 is connected to the motor 58 via the
. . constitutes a drive device 53 that rotates. Further, a cylinder piston device 59 for moving the gear case 56 up and down is provided.

An elliptical high-frequency heating coil 8 is disposed to surround the four jigs 51 arranged in series at the lower limit of the gear case 56 by the cylinder piston device 59.

In the above, when preheating by the heating device 5,
The loading device 2 holding the four cylindrical insert fittings S is conveyed to above the high frequency heating coil 8, the gear case 56 is raised by the cylinder piston device 59 which is a lifting device, and the four setting jigs 51 are loaded.
... is raised above the heating coil 8. Then, the metal fittings S are set on each jig 51.

After setting, the gear case 56 is lowered again by the cylinder piston device 59, and the four metal fittings S set on each jig 51 are exposed to the inside of the heating coil 8.

Thereafter, heating is started by the heating coil 8, and at the same time, each jig 51 is rotated by the drive device 53, and each metal fitting S is heated while being rotated.

After heating for a predetermined period of time, the drive device 53 is stopped, each jig 51 is raised by the cylinder piston device 59, each metal fitting S after heating is held in the loading device 2 again, and transported to the casting machine 6. , perform casting.

The heating device 5 is configured in this way, and four cylindrical insert fittings S are placed inside the elliptical high-frequency heating coil 8.
... are placed in series and each metal fitting S is heated while rotating, so a plurality of metal fittings S can be uniformly heated efficiently in a short time.

In addition, the attachment and detachment of the metal fittings S to and from the setting jig 51 can be reliably and efficiently carried out by the positioning pins 52 that engage with the floating-supported holders 24 of the loading device 2, so that the fittings S can be reliably and efficiently set in the mold 61. Presetting can be done easily.

Although a robot is illustrated as an example of the transport device, the present invention is not limited to this.

(Effects of the Invention) As described above, according to the present invention, it is possible to uniformly heat a plurality of cylindrical insert fittings efficiently, and also it is possible to easily attach and detach them, and to ensure efficient setting.

[Brief explanation of the drawing]

Figure 1 is a schematic plan view of the entire casting machine, Figure 2 is a side view of the casting machine and transfer robot, and Figures 3 and 4.
The figure is a partially cutaway side view of the transfer robot, FIG.
The figure is a longitudinal sectional view of the metal fitting heating device, and FIG. 8 is a plan view thereof. In addition, in the drawing, 1 is a transfer robot, 19 is an arm,
2 is a loading device, 22 is a support body, 24 is a holding body, 2
5 is a collection chuck, 29 is a guide portion, 5 is a heating device, 51 is a setting jig, 52 is a positioning pin, 53 is a drive device, 59 is a lifting device, 61 is a fixed mold, 62 is a positioning pin, 8 is an oval shape A high-frequency heating coil, B a cylinder block, and S a cylindrical insert fitting.

Claims (1)

[Scope of Claims] 1. A heating device configured to heat a cylindrical insert fitting set on a setting jig by placing it in a high-frequency heating coil, comprising: The setting jigs are arranged in series, and an elliptical high-frequency heating coil is provided on each setting jig to heat the cylindrical insert fittings set respectively. A cylindrical insert heating device characterized by being provided with a drive device that rotates the cylindrical insert heating device.