KR-20260063147-A - Centrifugal casting automation system

KR20260063147AKR 20260063147 AKR20260063147 AKR 20260063147AKR-20260063147-A

Abstract

The present invention relates to a centrifugal casting automation system comprising: a ring gear (5) fixed to the upper surface of a base (4) fixed to a bottom surface (2); an outer ring (7) axially installed on the outer circumference of the ring gear (5); a rotating shaft tube (10) axially installed on the outer circumference of a central shaft tube (8) fixed to the center of the base (4); a turntable (13) fixed to a top plate (11) fixed to the outer ring (7) and the rotating shaft tube (10); a pinion gear (15) fixed to the rotation axis of a servo motor (14) fixed to a frame (12) and meshing with the ring gear (5); a circular fixing plate (16) fixed to the upper surface of the frame (12); inner and outer rings (17)(18) fixed to the inner and outer sides of the bottom surface of the frame (12); and upper and lower molds (21)(22) and a clamp (95) installed at equal intervals on the fixing plate (16). A centrifugal casting mold (20), a mold motor (23) fixed to a frame (12) and rotating the centrifugal casting mold (20) at high speed, a plurality of inner and outer supports (25) (27) fixed to the inner and outer sides of the bottom surface (2) and a horizontal roller (31) (32) that supports inner and outer rings (17) (18) and is axially installed on a plurality of inner and outer supports (25) (27), a mold rotary jointer (34) and a three-way solenoid valve (35) that supply compressed air to a mold cylinder (33) installed at the bottom of the centrifugal casting mold (20), a pneumatic rotary jointer (36) and a pneumatic distributor (37) that supply compressed air to the mold rotary jointer (34) installed at the center of the top plate (11), a power rotary jointer (38) that supplies operating power to the mold motor (23) installed at the bottom center of the top plate (11), and It includes a power distributor (39) and a plurality of sensors (40)(41)(42)(43).

Inventors

정소희

Assignees

정소희

Dates

Publication Date: 20260507
Application Date: 20241030

Claims (10)

A base fixed to the floor surface with anchor bolts; A ring gear fixed to the edge portion of the upper surface of a base and having a gear formed on its inner circumference; An outer ring that rotates freely, coupled to the outer surface of a ring gear with ball bearings; A central shaft tube fixed to the center of the upper surface of the base; A rotating shaft tube axially installed with multiple bearings on the outer surface of a central shaft tube; Top plate fixed to the upper surface of the outer ring and the rotating shaft tube; A turntable composed of a plurality of frames protruding radially from the outer side of the top plate; Servo motor fixed to the frame; A pinion gear fixed to the rotation axis of a servo motor and meshed with a ring gear; A fixing plate fixed around the upper edge of the frame; An inner ring fixed to the inner side of the bottom surface of the frame; An outer ring fixed to the outer side of the bottom surface of the frame; A centrifugal casting die installed at equal intervals on a fixed plate and composed of upper and lower molds and a clamp; A mold motor and power transmission means fixed to a frame and rotating a centrifugal casting mold at high speed in one direction; A plurality of inner supports fixed to the inner side of the bottom surface and arranged in a circular pattern at equal intervals; A plurality of outer supports fixed to the outer side of the floor surface and arranged in a circular pattern at equal intervals; A horizontal roller that is axially installed on the upper part of the inner support and supports the inner ring; A horizontal roller axially installed on the upper part of the outer support and supporting the outer ring; A mold cylinder installed at the bottom of a centrifugal casting mold and raising and lowering the upper and lower molds; Mold rotary jointer and three-way solenoid valve supplying compressed air to the mold cylinder; A pneumatic rotary jointer and a pneumatic distributor installed in the center of the top plate and supplying compressed air to the mold rotary jointer; A power rotary jointer and power distributor installed at the lower center of the top plate and supplying operating power to the mold motor; A motor power sensor installed on a turntable that supplies and cuts off operating power to a mold motor; A motor brake sensor installed on a turntable and supplying and cutting off the brake power of a mold motor; and A solenoid sensor installed on a turntable that supplies and cuts off power to a three-way solenoid control; Centrifugal casting automation system including
In claim 1; A mold inching sensor fixed to the above-mentioned turntable and driven to open the clamp by the centrifugal force generated by rotating the centrifugal casting mold several times; A centrifugal casting automation system including further
In claim 1 or claim 2; "C" shaped steel fixed around the outer side of the edge portion of the above circular turntable; "U" shaped guide groove formed in the "U" shaped steel section; and A guide roller that is axially installed on one side of the upper portion of a vertical member fixed to the floor surface with an anchor bolt and is coupled to the "U"-shaped guide groove to perform rolling motion; A centrifugal casting automation system including
In claim 1 or claim 2; A centrifugal casting automation system characterized by intermittently rotating a plurality of centrifugal casting dies installed on the turntable at an angle of 1/n, and injecting molten liquid into a centrifugal casting die rotating at high speed in the molten liquid injection section to perform centrifugal casting.
In claim 1 or claim 2; A "C" shaped steel member fixed around the outer edge of the turntable and having a "C" shaped guide groove formed therein; and A support roller axially installed on the upper part of a vertical member that is coupled to the above guide groove, performs rolling motion, and is fixed to the floor surface; A centrifugal casting automation system including
In claim 1 or claim 2; The above horizontal roller includes an angle adjustment means, The above angle adjustment means is, Support plate fixed to the bottom surface; A pivot plate installed on the upper surface of a support plate with an axle pin; Curved holes formed on an arc centered on a pivot pin on one side and the other side of the pivot plate; A bolt that secures the pivot plate by inserting it into a curved hole and then fastening it into a screw hole of the support plate; A vertical support fixed to the upper surface of the pivot plate; A horizontal roller axially supported by an axle on the upper part of a vertical support; A recessed groove formed on one side of the shaft seal; and A bracket fixed to one side of a vertical support with a plurality of bolts and coupled to the recessed groove; A centrifugal casting automation system including
In claim 1 or claim 2; A clamping groove of a predetermined depth formed at the edge portion of the upper surface of the upper mold; and A recessed groove of a predetermined depth formed on the outer surface of the lower mold; A centrifugal casting automation system including
In claim 1 or claim 2; A support plate supporting the lower mold above; A pair of fixing members fixed at three or four locations on the edge of the support plate; A space formed at a predetermined interval between fixed parts; and The lower part of a clamp that is loosely fitted into the space and then pivotally installed with a pin; A centrifugal casting automation system including
In claim 1 or claim 2; A groove formed in the center of the bottom surface of the lower mold; A lifting plate installed at the center of the upper surface of the support plate and coupled to the groove above to raise and clamp the lower mold or lower and unclamp the lower mold; A through hole formed in the center of the lifting plate; and A cylinder rod that penetrates through a through hole and is then fixed to the lower surface of the lifting plate; A centrifugal casting automation system including
In claim 1 or claim 2; The above clamp has a long straight section; A horizontal section that is bent at a right angle and has a short length; and A catch portion that is bent downward at the end of the horizontal portion and engages in a clamping groove; A centrifugal casting automation system including

Description

Centrifugal casting automation system The present invention relates to a centrifugal casting automation system, wherein a plurality of centrifugal casting dies, each independently rotated by a motor, are installed at equal intervals on the edge portion of a circular turntable that rotates intermittently by a driving means, and the assembly, disassembly, and clamping of the centrifugal casting dies, as well as the intermittent rotation and stopping of the turntable, are configured to automatically control these processes, thereby significantly improving productivity and enabling high-speed, high-precision centrifugal casting. Furthermore, through automation, the number of workers required can be reduced by 3 to 4, thereby significantly reducing labor costs and manufacturing costs. Generally, a centrifugal casting machine for centrifugally casting ring-shaped products is configured by assembling an upper mold and a lower mold, fixing them so as not to separate using a clamp or fastening member, and then injecting molten liquid while rotating them at high speed using a motor and a power transmission means to perform centrifugal casting. An injection port of a predetermined size is formed in the upper mold to allow high-temperature molten liquid to be injected, and a power transmission means is configured on the rotating shaft that rotates the lower mold to transmit the rotational force of the motor. Once centrifugal casting is achieved, the machine is stopped, the upper and lower molds are disassembled or separated, the centrifugally cast product is removed from the lower mold and cooled, and then processed into a finished product or semi-finished product using a lathe or the like. The above-mentioned conventional centrifugal casting machine proceeds by repeatedly clamping the assembled upper and lower molds with a clamp or fastening the upper and lower molds with bolts and nuts before injecting the molten metal to centrifugally cast, then unclamping or loosening the bolts and nuts to separate and dismantle the upper and lower molds, and finally pulling out the cast product. During this process, the clamping and unclamping operations, as well as the fastening and unfastening of the upper and lower molds using bolts and nuts, all rely on the hands of the operator. As molten metal reaching a high temperature of approximately 1,700°C is repeatedly injected into the mold handled by the operator, the temperature of the mold and its surroundings rises to approximately 600–700°C. This high temperature heat is directly transmitted to and acts upon the operator, creating an extreme working environment. Furthermore, despite the operator's caution, bare skin exposed through gaps in the protective gear worn by the worker may come into contact with the high temperature, or molten metal may splash onto the bare skin, causing severe burns. In addition, due to the nature of the fastening and unfastening of bolts and nuts used when assembling and disassembling the upper and lower molds, the workers' bodies are in a bent position, which causes severe pain and musculoskeletal disorders. Although an easy-to-handle one-touch locking device has been devised to improve this extreme working environment, safety accidents often occur when the lock is released during use. When molten liquid is injected into the mold through the injection port, the special oil treated inside the mold oxidizes and expands due to high heat, and the internal air also expands and is expelled to the outside of the mold through the injection port. However, because the inner diameter of the injection port is narrow, the expanded air that is not expelled instantaneously acts on the upper and lower molds rotating at high speed, causing the one-touch locking devices to be released. Consequently, not only is the reliability of safety compromised, but there are also frequent cases where valuable human lives and property suffer significant damage. FIG. 1: Plan view illustrating an example of the present invention. FIG. 2: Cross-sectional view illustrating an example of the present invention. FIG. 3: Cross-sectional view illustrating another example of the present invention. FIG. 4: Plan view of a horizontal roller portion illustrated as an example of the present invention. FIG. 5: Longitudinal cross-sectional view of a vertical support portion illustrated as an example of the present invention. FIG. 6: Side view of a vertical support portion illustrated as an example of the present invention. FIG. 7: Plan view of a vertical support and horizontal roller portion illustrated as an example of the present invention. FIG. 8: Plan view of the support plate of a vertical support column illustrated as an example of the present invention. FIG. 9: Plan view of the pivot plate of a vertical support column illustrated as an example of the present invention. FIG. 10: Perspective view of a ring gear portion illustrated as an example of the present invention FIG. 11: Plan view of a