SU1614895A1 - Machine for continuous casting of hollow blanks of vertical type - Google Patents

Abstract

The invention relates to metallurgy, in particular to a continuous casting machine of hollow billets of the vertical type. The purpose of the invention is to simplify the design, increase productivity and expand the technological capabilities of the machine. The machine contains a mechanism for forming and stretching the workpiece, a mechanism for changing chill molds, a device for separating the workpiece, and a mandrel mold, which has an internal cavity with channels for feeding the melt to the forming zone. Continuous casting of blanks is carried out due to the fact that the mechanism for shaping and stretching the blanks is made in the form of detachable chill molds interconnected in a vertically closed circuit with a shaped molding profile and equipped with automatic connector and chill molds. 3 hp f-ly, 5 ill.

Description

 The invention relates to a foundry and can be used for continuous casting of hollow billets with a shaped outer surface, for example cylinder liners of internal combustion engines.

The purpose of the invention is to simplify the design, increase productivity and expand technological capabilities.

Fig, 1 shows the machine, a general view; FIG. 2 is a section A-A in FIG. one; FIG. 3 is a section BB in FIG. one; FIG. 4 is a view B of FIG. 3; in fig. 5 - orn.

Continuous casting machine hollow. vertical-type workpieces contains frame 1 on which a movable split mold of workpieces is mounted

2, equipped with a guiding device

3, and mecha.nizm 4 change of chill molds. The movable detachable mold is made in the form of interconnected using mapimpoB 5 into an infinite chain of chill molds 6 and equipped with a drive 7. Each mold 6 is made in the form of two shaping dies 8 connected by hinges 9 mounted on the bracket 10 of plate 11 connected to the base 12 fitted with spring-loaded latches (not shown) and rollers 13 in contact with on, guides 14, mounted on frame 1, Hinges 9 are supplied (M1s with temperature compensated expansion joints 15, made in the course of spring-loaded liners. Aval; device 3 is made in the form of e) yy. and; ilusravla1111

jOWrlL

but

00

coke

planes 16 mounted on frame 1 by means of hinges 17 and fitted with a rigid fixing unit 18 of their position. The planes 16 have floating spring-loaded inserts 19 to compensate for the gap between the guide plane 16 and the moving chill molds 6 under the conditions of thermal expansion. A mandrel 20 is installed in the upper part of the frame with the possibility of chipping it with chill molds in the straight section of their movement. It is equipped with a cooling system 21 and is provided with a cavity 22 and channels 23 for supplying liquid metal to the forming zone of the workpiece. For the automatic closing of the dies 8, the cocyles 6 in the upper part of the frame 1 are installed the device 24, made in the form of two mirrored stops 25 with shaped working surfaces that have the ability to interact with the supporting platforms made on the dies c. A device 26 is installed in the lower part of the frame. The device is made in the form of an anvil 27 with two mirrored shaped working surfaces for an automatic chill mold connector.

The drive 7 of the mold is installed in the upper part of the frame in front of the shaping zone. Due to this arrangement of the drive and the presence of guaranteed gaps in the swivel joints of the molds, reliable contact is provided between adjacent molds in the formation zone of the workpiece.

The machine is equipped with a piece by piece separation device (not shown).

The machine works as follows

In the initial position, all the chills 6 of the compensator 15 are open, the planes 16 of the guiding device 3 are separated to the sides. Before the metal is poured, the chill molds located on the straight section in the forming zone are closed, by preliminarily inserting the workpiece into the chill mold, covering the mandrel 20. Then align the planes 16 of the guide device 3 to contact the lateral surfaces of the chill mold and 16 fix them nodes 18 rigid fixation. Further include

0

five

0

five

0

five

0

five

0

five

The mold 7 of the mold and the internal cavity 22 and the ducts 23 of the mandrel 20 feed the metal into the annular cavity formed by the mandrel and the shaped surface. The liquid metal crystallizes in it as it moves, and at the same time it fills the next chill. At the same time, the chill mold approaching the mandrel comes in contact with the lugs 25 of the device 24 and, slipping on the shaped working surfaces, closes, encompassing the mandrel, and the chill coming out of the guide device comes in contact with the dies stops 27 of the device 26 and opens, and in this position moves to approach the mandrel. Thus, in the vertical section of the movement of the molds, the continuous formation and stretching of the billet takes place, which along the path of the downward movement of the iodine 1) is carried out by element-by-section, followed by cleaning, painting and drying. When the need arises to change the chill mold, this operation is performed using mechanism 4 without stopping the drive 7. Using a continuous casting machine of hollow billets of the vertical type allows increasing the volume of product removal from a production unit, reducing the machining allowance and reducing the weight of the machine by 1 kW. power.

Claims (4)

1. A continuous casting machine of hollow billets of the vertical type, comprising mounted on a movable separable mold consisting of chill molds, a guide device, mandrels and a billet separation device, characterized in that, in order to simplify the design, increase productivity and expand technological capabilities, movable split mold is made in the form of hinged interconnected in an infinite chain of chill molds. while the chill mold is made of matrices connected by hinges, and the machine is equipped devices for automatic -smocking and dies of the molds of dies, / made in the form of stops with mirrored working surfaces, installed with the possibility of interaction with the support sites on the dies, and the turf has an internal cavity with channels for feeding liquid metal to form the workpiece and is equipped with a system cooling, 2 o The machine according to claim 1, characterized in that the swivel joint of the chill molds is made with a guaranteed clearance, and the drive of the mold is located in the upper parts of the frame above the zone of formation of the shell. 3. Machine iiort, 1, characterized in that the guide device B1 :: is completed in the form of planes hinged on the frame. 4. The machine according to claim 1, characterized in that the hinges of the matrices of the plane of the guiding device are provided with temperature expansion joints made in the form of spring-loaded liners and rollers. 1 FIG. 2 77 ////// ////// Л / Г / // y- ™ Bv W zzn - // f2 Fig.Z WA a FIG L