JPS59218253A - Treating device for inside surface at one end of centrifugal casting die - Google Patents

Abstract

PURPOSE:To prevent surely the unnecessary displacement of spraying and brushing by providing a pair of upper and lower advancing and retreating frames via extension/contraction rods to a lifting frame positioned to face one end of a die and attaching separately a brushing device and a spraying nozzle. CONSTITUTION:A lifting frame 3 is positioned to face one end 2 of a centrifugal casting die 1 in the axial center direction thereof. A pair of upper and lower advancing and retreating frames 45 are provided via extension/contraction rods 8, 36 to the inside of the frame 3. A brushing device 22 of a rotary type is attached to the frame 5 and a spraying nozzle 41 for a mold coating material is attached to the upper frame 4. The height of the frame 3 is adjusted in accordance with the inside diameter of the die 2 and the device 22 is turned by a cylinder device by which said device is brought into press contact with the inside surface of the end 1 and brushing is performed. The entire inside surface of the end 1 is brushed by moving gradually the frame 5 forward and backward. The frame 4 is then gradually advanced and the mold coating material is sprayed from the nozzle 41 thereby coating the inside surface of the end 1.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for treating the inner surface of one end of a centrifugal casting mold.

For example, when centrifugally casting cast iron pipes, the inner surface of one end of a centrifugal mold often has a special shape. In order to cope with this problem and to properly treat the inner surface of the one end, a conventional example has been proposed as shown in Japanese Patent Application No. 185698/1982.

Its structure is that an elevating frame is provided axially opposite to one end of the mold frame, and a pair of upper and lower egress frames supported toward one end of the mold so as to be able to move toward and away from each other are provided on this elevating frame. A mold coating spray nozzle is arranged on the lower egress/egress frame, and a sinking device is placed in the lower egress/egress frame so as to be biased downward. This makes it possible to change the height of the lashing device and the spray nozzle in response to metal frames with different diameters, and also allows the rotating brush to be applied to the inner surface of one end of the mold according to changes in shape. It is possible to apply pressure almost evenly without any friction so that it can be brushed completely.

However, in the above-mentioned conventional device, since the egress and egress frame on the spray nozzle side is only cantilever-supported by the elevating frame by the pantograph mechanism, there is a problem in that it is easily displaced vertically and horizontally. In addition, the egress and egress frame on the brushing device side is connected to the telescoping support beam with a connecting member in order to cope with the reaction force during brushing, but it is not necessary to reliably receive and stop the reaction force. It's not enough.

Therefore, an object of the present invention is to reliably prevent unnecessary displacement between the spray nozzle and the brushing device.

In order to achieve this object, the present invention provides an elevating frame that is positioned opposite to one end of the mold in the axial direction, and has first and second elevating frames.
A pair of upper and lower egress/retractable frames to which the syringe portion of the cylinder device is fixed is provided, and the telescopic rod of the first cylinder device of each egress/egress frame is arranged on the side opposite to the mold, and its tip is attached to the elevating frame. The telescopic end of the second cylinder device of the upper retractable frame is arranged on the mold side, and a spray nozzle for mold coating agent is attached to the tip thereof, and the second cylinder device of the lower retractable frame is connected. A telescopic rod is disposed on the side of the mold, and a brushing device is attached to the tip thereof, and an O-ra for supporting each egress/exit frame separately is provided on the elevating frame.

Therefore, the cylinder devices of each egress/egress frame and the instrument barrel 1 are supported by the elevating frame by the telescopic rods and rollers, and the syringe portion of each cylinder device is fixed to the egress/egress frame. This acts as a strength member, making the entire structure strong and reliably preventing unnecessary displacement between the spray nozzle and the brushing device.

Hereinafter, one embodiment of the present invention will be described based on the drawings.

In Figures 1 to 4, (1) is the centrifugal casting mold (2)
One end (3) is an elevating frame that can be raised and lowered by a pantograph mechanism (not shown), and is located opposite to the one end (1) in the axial direction. A pair of upper and lower entrance/exit frames (4) and (5) are provided within the elevator frame (3).

The lower egress/egress frame (5) is integrally fixed with the retractable rod (8) of the pair of lower first cylinder devices (6). ) is the mold (2)
It is connected to the elevator frame (3) on the opposite side through a pin (9) and a racket 00. A lower second cylinder device (l) is arranged between both cylinder devices (6), and its cylinder portion 0 is connected to the exit/exit frame (1) in the same way as above.
5) is integrally fixed. Second cylinder device OD
The telescopic rod (to) is arranged on the mold (2) side.

At the tip of the telescopic rod (to), there is a vertical end plate (14+
and the bottom plate aO arranged horizontally below the exit/exit frame (5).
An L-shaped moving platform αe consisting of the following is attached.

A pair of upper slide bars αη extending into the exit/exit frame (5) are fixed to the end plate (14), and this slide bar α force is applied to the exit/exit frame (5) by the expansion and contraction of the telescopic rod (to). It can be slid within a bushing attached to the end. On the other hand, a pair of lower guide bars parallel to the slider α force are passed inside the egress/exit frame (5), and this guide bar is provided at the end of the bottom plate a0 opposite to the end plate 04. A pair of sliders (1) slidably fitted onto 01
has been erected.

The bottom plate αυ is equipped with a rotary nozzle th/j device (a) which is rotatably biased downward by its own weight and a spring (to) via a plug-soto Q force attached to the bottom surface of the bottom plate αυ. It is attached so that it can swing up and down. (C) is the main body of this Plassy/Iji device (A), the rear part of which is rotatably supported by the support shaft (C), and the rotary brush ( C) is installed. (Foundation) is Driving Tanabata.

(C) and (E) are a pair of supports that are erected from the elevator frame (3) toward the mold (2) side of the exit/exit frame (5), and each support (G) and (G) is equipped with an idling type roller (to) that supports the lower surface of the egress/egress frame (5), and a reversible type 〇-RA G]) that supports the side surface of the egress/egress frame (5).

The upper entry/exit frame (4) has an upper first cylinder device (
) and the upper second cylinder unit ft&C (3) are fixed together, and the telescopic rod (or mold (2) of the first cylinder unit 0) is fixed together. The elevating frame (3) part i on the opposite side is fixed.In addition, the telescopic Drad C cut of the second cylinder device (g) is placed on the mold (2) side, and its tip has a vertical direction. A mounting plate (to) is fixed to the mounting plate (g).One end of the mounting plate (t) extending into the exit/exit frame (4) is fixed, and the other end of the id bar 931 is fixed to the mounting plate (g). , a sliter 00 fitted externally is attached to the cylinder part (to).Furthermore, a mold coating spray nozzle (b) is attached to the mounting plate (to), and a mold coating agent spray nozzle (b) is attached to the mounting plate (to).
It is attached diagonally downward toward 2).

A horizontal beam member (c) extending upward from the support column (a) is attached to the elevating frame (3). A round bar-shaped idling roller is passed between the bearing @→ attached to the lower surface of the beam member (6) and the bearing ■ attached to the upper surface of the support column. The lower surface of the exit/exit frame (4) is supported by 〇-ra θ0.

In the above configuration, casting within the mold (2) is completed.

When the product is taken out from one end (1), the lifting frame (3)
is moved horizontally by appropriate means, and the brushing device (
A) and a spray nozzle (41) are opposed to the end (1). At this time, the height of the lifting frame (3) is set in advance by the mold (
2), and the respective heights are set so that brushing of the inner surface of one end (1) by the rotating brush (E) and application of the T-type agent by the spray nozzle θ are performed optimally. ing.

Next, when the cylinder device (6) ασ is extended and the drive Tanabata (a) is driven, the brushing device (a) rotates downward due to its own weight and the action of the spring (c), and the rotating brush (i. ) rotates while pressing against the inner surface of one end (1), thereby performing brushing. (See imaginary line in Figure 1)
In this state, cylinder device (6)
By gradually moving backward, the entire inner surface of one end (1) is brushed. At this time, the egress/egress frame (5) receives a reaction force, but this egress/egress frame (5) is reliably moved to the elevating frame ( 3), and unnecessary displacement is prevented. In addition, the moving platform αe also has an egress/exit frame (5) using the cylinder device θυ, slide bar a't>, and h side bar 01.
As a result, the rotating brush (c) is reliably pressed against the inner surface of the one end (1), and stable brushing is performed.

Next, immediately after the completion of lashing, the retractable frame (4) is gradually advanced by extending the cylinder device (0), and the coating agent is sprayed from the spray nozzle αD, and immediately after the forward movement is completed, the retractable frame (4) is sprayed. (4) By spraying the coating agent from the spray nozzle θ◇ while gradually retreating,
The inner surface of one end (1) is coated with a molding agent. At this time as well, the egress/egress frame (4) is connected to the tip of the telescopic rod (to) of the cylinder device 02 and the roller (. (To) and the action of slider 00, Sj L/
- The nozzle θ° C. is stably supported by the egress frame (4). This prevents unnecessary displacement of the spray nozzle θ and allows the mold coating agent to be applied in an optimal state.

As described above, according to the present invention, each entry/exit frame and the winter 1 cylinder, . . . Since the part is fixed to the egress/egress frame, it acts as a strength member of the egress/egress frame, making the entire structure strong and making it possible to reliably prevent unnecessary changes in the spray nozzle and the spray sinter device.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a front view thereof;
Figure 2 is its left side view, and the 8th factor is nl in Figure 1.
-III sectional view, FIG. 4 is a view taken in the direction of the ■ arrow in FIG. (1)...One end, (2)...Centrifugal casting mold, (3
)... Elevation slot, (4) (5)... Entry/exit slot, (6).
...first cylinder device on the lower side, (8)...extendable 0-dot, αD...second cylinder device on the lower side, Qa...extendable 0-dos, (a)...zu lashing device ,(g)C(
1)...roller, (to)...upper first cylinder'
j outfit f! ii 2%)...Upper second cylinder device, cap 1, telescopic rod, 0υ...Street nozzle, etc.)
...M-transfer agent Yoshihiro Morimoto

Claims (1)

[Claims] (2) A lift frame is provided that faces one end of the mold in the axial direction, and a pair of upper and lower egress frames to which the cylinder parts of the first and second cylinder devices are fixed is provided, and each egress frame is The telescopic D-rad of the first cylinder device is arranged on the side opposite to the mold, and its tip is connected to the elevating frame, and the telescopic D-rad of the second cylinder device of the upper ejection frame is placed on the side opposite to the mold. Attach a mold coating spray nozzle to the tip, and
A telescopic tube of the second cylinder device of the lower egress/egress frame is placed on the mold side, a brushing device is attached to the tip thereof, and a D-ra for supporting each egress/egress frame separately is attached to the elevating frame. A device for treating the inner surface of one end of a centrifugal casting mold.