SU1416258A1 - Pattern plates - Google Patents

Description

(21) 4161256 / 23-02

(22) 10/4/86

(46) 08/15/88. Bul No. 30

(71) Production Association

Vladimir Tractor Plant

them, A.A. Zhdanov

(.72) A.N. Alexander and V.A. Denisov

(53) 621.744.062 (088.8)

(56) Av. Author's certificate of the USSR No. 1178530, class B 22 C 7/04, 1984.

(54) MODELING EQUIPMENT

(57) The invention relates to a foundry industry, in particular, to the manufacture of molds from

wet sandy-argillaceous and cold-hard en tix; mixes on model plates. The aim of the invention is to improve reliability by reducing the model skew during drawing. The proposed model equipment contains a model, centering elements and a sub-model plate, which is perpendicularly mounted with false models in the form of cylinders or prisms that do not have molding patterns. The use of the proposed design allows to increase the service life of prices -. trimming pairs and improve the geometric accuracy of castings. 2 Il.

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The invention relates to a foundry, in particular, to the manufacture of single molds from raw sand-clay and cold-hardened mixtures on model plates.

The purpose of the invention is to increase the reliability of work by reducing the skew of the model during drawing.

The proposed model equipment 10 contains a model, a sub-model plate, centering elements, as well as false models in the form of cylinders or prisms that do not have molding slopes, which are installed perpendicularly-15 on the sub-model plate.

Figure 1 shows the model equipment; figure 2 - the initial time of the broach.

Model equipment contains a sub- model plate 1 with model 2, false models 3, and pins. 4. On the model plate 1, resting on it in its own way, there is a molded flask 5, oriented when mounted with a sleeve 6, which is connected with pin 4 with technological gap A and gap B formed between the model and her fingerprint in the process The protrusion .. The 30 Protka is performed as follows.

in a way.

Model plate 1 (figure 2), down -. From the molded flask 5, fastened with model plate 35, model 1, 2, are oriented on the side surfaces of the false models 3 that do not have a gap with their imprint in the molded mold 5. During the stretching between model 2 and its seal 40 in the molded mold 5, the gap B is formed due to the molding slopes on model 2. When the gap B is formed, the gap occurs along the centering pair: pin 45

4 - sleeve 6. It is possible to use the device in the case of other pairs: cylinder-rod, column-sleeve, etc., as well as their combinations.

As a result of the transfer of forces, which occur during the displacement of the model plate to the QT mold half molds, to the false models that are installed perpendicularly to the connector on the model plate, the breakage of the molded form is almost completely eliminated when making advanced molds from sandy-clay mixtures. . More rigid fixation of the model during pulling allows to obtain castings instead of the third in the second class of accuracy and similar to it for other types of casting.

This design was tested on model plates of an automatic line installed in the foundry shop of the plant, which ensured an increase in the reliability of the line, A follow up, and productivity, as the downtime and repair time was reduced. The life of centering pairs has increased. The geometrical accuracy of castings increased, which allowed saving the metal 1-2% of the mass of castings.

Claims (1)

Invention Formula Model equipment, containing a model, a sub-model plate and centering elements, characterized in that, in order to increase the reliability of work by reducing the model skew during stretching, it is equipped with false models in the form of cylinders or, prisms without forming gradients, installed perpendicularly on the submodel slab ... FIG. Fi.2