TH25569B - Metal strip casting machine - Google Patents

Abstract

The DC60 double-roller metal strip casting machine consists of two parallel cast rollers, one of which is mounted on a movable roller support allowing it to move the body toward and toward the other roller. A pair of roller bias units, which exert pressure on the roller supports to bias the roller moving toward the other roller, are incorporated. The bias unit consists of a spring that applies the pressure exerted on the roller supports through a push-release and push-reaction structure. The position of the push-reaction structure is set by a hydraulic cylinder unit capable of varying the position of each reaction structure to reverse the movement of the push-release conveyor structure sequentially in order to maintain a constant bias spring pressure regardless of the roller support movement. It is set by a hydraulic cylinder unit that can vary the position of each reaction structure to reverse the movement of the pressure conveying structure in sequence, in order to maintain a constant bias spring pressure regardless of the movement of the roller supports.

Claims (10)

1. A continuous metal strip casting machine in which a pair of positioned casting rollers form a clamping section between them. A metal delivery system conveys molten metal to the clamping section between the casting rollers to form a casting basin of molten metal supported on the casting roller surface above the clamping section, which is restricted in terms of outflow near the ends of the casting rollers. A casting roller drive system then moves the casting rollers in opposite directions to produce a solidified strip of metal which is delivered down from the clamping section. Improvements in strip thickness control against variations during casting include: a. A sensor positioned at the end of the clamping section capable of detecting strip thickness at a given strip width. b. Such sensor can produce an electrical signal indicating the detected strip thickness at the detection position. c. At least one such casting roller mounted on more than one roller conveyor across the strip width, capable of moving independently from another roller conveyor and allowing one casting roller to move transversely and away from the casting roller. d. A conveyor drive system that moves such casting rollers independently to form the clamping section. It is variable in wedge shape and in variable rotation of the crossbar thickness, the thickness of the strip at the clamping section, and e. The control system can control the conveyor drive section by responding to electrical signals from the sensor to vary the clamping section crossbar width to correct, at least partially, for variations in strip thickness according to the strip thickness detected by the sensor. 2. A continuous metal strip casting machine as claimed in claim 1, in which a servo-driven conveyor system can freely move the roller conveyor to vary the crossbar thickness and the width of the strip at the clamping section. 3. A continuous metal strip casting machine as claimed in claim 1, whereby the conveyor drive system shall be composed of individual roller bias units acting on the roller conveyor to bias the casting roller body toward the lubricating rollers in order to vary the thickness of the strip across the width of the strip at the clamping section. 4. A continuous metal strip casting machine as claimed in claim 3, where each roller bias unit shall consist of a thrust conveyor structure connected to each roller conveyor, a compressive spring acting against the thrust conveyor structure to exert force on the thrust conveyor structure and rotate the roller conveyor, and a thrust reactor device capable of operating to vary the length of the compressive spring, and where a control system operates the thrust reactor device until the thrust conveyor structure moves the roller conveyor and rotates, varying the thickness of the crossbar at the clamping section. 5. A continuous metal strip casting machine as claimed in claim 4, where each roller bias unit still consists of a spring-loaded compression reaction structure and can be moved by a compression reaction device until the control system varies the position of the compression reaction structure to exert an effort force through the compression spring on the compression transmission structure and vary the rotation of the strip thickness and strip width at the clamping section. 6. A machine as claimed in Recourse 1 in which the conveyor drive can be detached from the roller conveyor so that the module assembled with the casting rollers and the roller conveyor can be removed without removing or disassembling the conveyor drive. 7. A continuous metal strip casting machine in which a pair of casting rollers forming a clamp between them, a delivery system delivers molten metal to the clamp between the rollers for forming. A casting basin of molten metal is immediately supported on the casting roller surface above the clamp, confined to an anti-flow boundary near the ends of the casting rollers, and the casting roller drive system drives the casting rollers in opposite directions of rotation to produce a solidified strip of metal which is delivered down from the clamp. An improved control of strip thickness variations in strip width during casting consists of: a. At least one such casting roller mounted on the roller conveyor capable of allowing one of the transverse rollers to move toward and away from another casting roller; b. Each roller bias unit acting on the roller conveyor near each end of the casting roller to bias the body of the casting roller toward another casting roller; c. Each roller bias unit consisting of a pressure conveying structure connected to the machine. 1. A conveyor roller near each end of the cast rollers; a compressive spring acting against the thrust conveyor structure to exert force on the thrust conveyor structure and rotate the conveyor roller near each end of the cast rollers; 2. A thrust reaction structure capable of compressing the compressive spring and moving axially along the compressive spring; 3. A device that sets the thrust reaction structure capable of varying the position of the thrust reaction structure relative to the compressive spring; and 4. A control system capable of controlling the operation of the device that sets the thrust reaction structure until the movement of the thrust reaction structure reverses the movement of the thrust conveyor structure, and so that the various movements of the thrust conveyor structure no longer significantly affect the bias force applied to the conveyor rollers and cast rollers by the compressive spring. 8. A device as claimed in claim 7 where the setting device is a driving element capable of exciting fluid to create pressure between the thrust reaction structure and the fixed element. 9. A device as claimed in claim 8 where the driving element capable of exciting fluid will... It consists of a fluid piston and a cylinder unit connected at one end to a fixed structure, the other end of which is either molded or connected to one of the reaction structures of the pressure. 10. The machine as claimed in claim 7, where the control system consists of a position sensor to sense the position of the pressure conveying structure and will operate a device capable of driving fluid pressure until the movement is detected by the sensor, which is then reversed by the movement of the reaction structure of the pressure. 11. The machine as claimed in claim 6, where the roller conveyor consists of a pair of roller end supports for each cast roller, which are generally arranged under the ends of the rollers respectively. 12. The machine as claimed in claim 11, where each pair of rollers and supports conveys journal bearings mounted on the ends of the rollers respectively, for rotation around the central roller axis. 13. The machine as claimed in claim 7, where the cast rollers and roller conveyor. It is mounted on a roller module that is installed in and can be removed from the casting machine as a unit 14. The machine, as claimed in claim 13, where the pressure conveying structure of each bias unit can be separated from the roller conveyor in sequence so that the module containing the casting rollers and the roller conveyor can be removed without removing or detaching the roller bias unit as stated on the pressure reaction structure. 7. The machine shall be entitled to one of the claims made herein, in which the roller conveyor shall consist of a pair of end supports for each roller, generally arranged to be positioned below the end of each roller. 8. The machine in question claims the right under claim 7, whereby each end-roller support structure conveys a journal bearing which holds each end-roller to rotate around the central roller axis. 9. The machine is entitled to one of the aforementioned claims, whereby the casting rollers and the roller conveyor are mounted on a roller module installed in and can be removed from the casting machine as a unit. 10. The machine claims under claim number 9, whereby the power transmission structure of the individual bias unit can be separated from each roller conveyor so that the module can be removed without removing or detaching the roller bias unit (Clause 10, page 2, figure 9).