RU2063301C1 - Gear for submerging casting - Google Patents

Abstract

FIELD: foundry. SUBSTANCE: invention refers specifically to casting of shaped castings by method of submersion. Gear has intermediate bracket with mechanism removing castings from rod manufactured in the form of mobile frame connected to vertical power cylinder. Guiding columns are located in vertical plane one above other and horizontal power cylinder is positioned between them. EFFECT: enhanced casting efficiency. 2 cl, 2 dwg

Description

 The invention relates to the field of foundry, and more particularly to immersion casting.

 A device for extracting castings by A. with. 859026, adopted as a prototype.

 The device contains a chill mold with a vertical plane of the connector, brackets, guide columns, mechanisms for detonating the chill mold and pushing the casting, stretching. In this case, the columns are located in a horizontal plane. To design the internal cavities of the casting, sand rods are used.

 Along with the advantages of the device has two significant drawbacks. Firstly, the device lacks constructive possibilities of using permanent rods to design the internal cavities of the casting. Secondly, the device does not have sufficient rigidity, despite the use of stretch marks. Stretch marks give a certain rigidity only in statics, protecting the columns from deflection. In dynamics, i.e. in the process of opening the chill mold, due to a large deviation from the coaxiality of the interacting forces, elastic deformation is observed both in the columns and in the brackets. This makes it difficult to remove the casting from the mold, leading to distortions and scoring on the casting.

 The objective of the invention is to expand technological capabilities and increase the rigidity of the device.

 The problem is solved due to the fact that the device further comprises a stationary intermediate bracket, in which a casting mechanism with a power cylinder is integrated, and the guide columns are located in a vertical plane one above the other.

 The device is shown in FIG. 1 and 2. It contains: guide columns (1), a cross-arm (2), a power cylinder (3), a spacer (4), a rod (5), movable brackets (6), a fixed bracket (7), cooled coolers (8 ), forming core (9), chill mold (10) vertical columns (11), rotary table (12), vertical power cylinder (13) with rod 14, rods (15), lower plate (16) with a puller-sleeve (17 ) and the top plate (18).

 The device operates as follows. In the initial position, the chill mold (10) is opened, the crosshead (2) with the chill mechanism is in its highest position. With the “Start” command, the vertical cylinder (13), abutting the rod (14) against the bracket (7), raises the lower plate (16) with the puller-sleeve (17) using the plate (18) and rods (15). The cylinder (3) connects the brackets (6) with the rod (5) and the spacer (4) and closes the halves of the chill mold (10) through the choke holders (8).

 The collected chill mold is carried out into the furnace zone by turning the entire chill mechanism on the rotary table (12). Next, the chill mechanism is lowered along the columns (11) and the chill is immersed in the melt.

 After technological exposure, the mechanism with the chill mold rises to its highest position and turns to its original position. The chill mold is disassembled here: the cylinder (3) extends the arms (6), and with it the halves of the chill mold. In this case, the casting remains on a fixed rod (9), which is faced by a puller-sleeve (17), mounted on a plate (16). The latter is driven by a cylinder (13) through the plate (18) and the rod (15). Next, the cycle repeats.

 The use of an intermediate fixed bracket with a removable mechanism in the claimed technical solution significantly expands its technological capabilities. It becomes possible to use not only sand cores for the design of the internal cavity of the casting, but also metal, permanent, which reduces the cost of castings and increases labor productivity.

 An important advantage of this technical solution is the absence of pusher plates with pushers and counter-pushers, levers interacting with them. This greatly simplifies the design and reduces the size of the chill mold.

 The location of the guide columns in a vertical plane one above the other, and between them the power cylinder allowed to significantly increase the rigidity of the system, get rid of stretch marks and eliminate distortions of the movable brackets. As a result, the connector of the chill mold and the extraction of the casting have been improved.

 The distance between the columns is chosen not less than the distance to the chill mold from the lower column for purely practical reasons: reducing the distance between the columns reduces the stiffness of the structure, increasing structurally and economically impractical, although possible.

 Patent research was conducted on the novelty of the claimed facility in seven leading countries. The studies revealed the prototype indicated above. No other analogues were found.

 The proposed device for casting by immersion is made, mounted on the base works M20P40 and tested experimentally. Currently, preparations are underway for using it in serial production for casting the front brake cylinders of a VAZ-2101 car at the Neftemash plant in Samara.

 The expected economic effect is the reduction in the cost of castings due to the use of metal rods instead of sand, increasing the productivity of the machine due to an increase in the degree of automation, eliminating the loss of time for manual alignment of the rod, and reducing downtime due to failures during extraction of castings.

Claims (2)

 1. A device for casting by immersion, comprising a detachable chill mold, brackets, guide columns and mechanisms for opening the chill mold with a power cylinder, characterized in that it is provided with an additional fixed bracket and a mechanism for pushing the casting placed on the bracket and representing a power cylinder connected to with its body, the upper plate and the lower plate having a bushing puller, the upper and lower plates being interconnected by rods.  2. The device according to claim 1, characterized in that the guide columns are located in a vertical plane one above the other at a distance not less than the distance from the lower column to the chill mold, while the power cylinder of the chill mold opening mechanism is located between the guiding columns.

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