RU1822360C - Moulding machine - Google Patents

Abstract

Usage: in foundry, GU, in particular in machines for the manufacture of single sand molds. SUMMARY OF THE INVENTION: the device comprises a rotary table, a movable mechanism for gripping the flasks, a stationary lifting and pressing table. What is new in the device is that, to carry out the drawing process using the draw plate, the molding machine is equipped with a draw plate fixation mechanism that provides a difference in the speeds of movement of the model with the model plate and the draw plate. This difference is ensured by braking the draw plate until the flask is stopped by the gripping mechanism. 1 s.p. f-ly, 2 ill.

Description

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The invention relates to foundry, in particular to rotary table sand making machines.

The aim of the present invention is to expand the technological capabilities of the machine in the manufacture of complex Lorms and to improve the quality of the molds by a pulling process using a pull plate.

Nd yig. 1 shows a molding machine, general view; 0IG “2” is a view along arrow A of the molding machine, where the fixing mechanism of the long plate is shown.

Molding machine (gzhg.O contains a bed 1 with columns 2, a rotary table 3 with a model plate mounted on it and a long plate

5 with stops 6, a lifting table 7, a press block 8, a movable gripping mechanism for flasks 9 with rollers 10, a device for pulling a model with a locking mechanism 11. The locking mechanism of the long plate (see Figure 2) is attached to the movable gripping mechanism for the butt 9 and consists of a traverse 12, an arm 13, a shock absorber And, made in the form of a hydraulic spring, two spring-loaded guide rolling pins 15 with rollers 16. Model 17 is installed on model plate C, filling frame 18, and flask 19 is shown on a long plate 5 in the position of its interaction with the Fixat mechanism 11.

The device operates as follows.

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A model-test set consisting of a flask 19, a proto-hole 5 and a model one (the plates together with the model 17 and the moldable mixture are lifted by the lifting table 7 into the press area, while the movable gripping mechanism of the flasks 9 is in the open position (see dotted line Fig.-1) .A molding process takes place.After the molding process, the movable mechanism for gripping the flask comes into the gripping position, the lifting table 7 together with the model kit is lowered down to install the flask on the rollers of the gripping mechanism. the gripping mechanism, the long plate 5 with its stops 6 touches the rollers 16 of the speed locking mechanism 11 and is braked. In other words, the long plate with its stops G through the rollers 1 (, the rolling pin 15 and the yoke 1.2 moves the hydraulic spring with a certain adjustable speed LJTOK, performed It plays the role of a shock absorber. The hydraulic system is made in a known manner. The slab with the flask is braked and the lift table with the model slab and model continue to move down. Due to the difference in the speeds of movement of the draw plate and the model plate, the model is pulled, while the compacted molding mixture is held along the model’s contour by the draw plate, which prevents its destruction, the process is expired (the model is out of shape when the lift table is continuously moving with The amount of model extrusion from the mold at the moment the flask fits on the rollers of the gripping mechanism can be controlled by the high-speed locking mechanism, in particular, by changing the area of the hydraulic valve passage section springs.

After the flask is planted on the rollers of the gripping mechanism, the long plate is lowered onto the moving model plate under the action of force, gravity,

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He overcame the resistance force of hydroprotruction. The framed flask mounted on the frames of the gripping mechanism is pushed out of the machines, the lifting table with the model plate returns to its initial position. An empty flask enters the machine, rises, and a filling frame is placed in its place. The gripping mechanism is in an open position and the model kit is lowered. The table is rotated, the flask with the molding sand is placed in the starting position. The formation cycle is repeated.

The use of molding machines with a rotary table, a movable mechanism for gripping the flasks, a stationary lifting and pressing table, and a pulling mechanism made with the mechanism for fixing the draw plate will improve the quality of the molds, to obtain complex, for example, ribbed castings with minimal casting slopes with deep and extended intercostal spaces, without bays along the line of connectors.

Claims (2)

1. A molding machine comprising a bed with a sealing device, a column with a rotary table, a lifting-press table, a movable mechanism for gripping the flasks, characterized in that, in order to improve the quality of molds and expand technological capabilities, it is equipped with a long plate and a mechanism its fixation in the form of shock absorbers, which allows you to retrieve the model while lowering the draw plate at different speeds provided by braking the draw plate until the flask is stopped by the gripping mechanism. 2. The machine according to claim 1, characterized in that the shock absorber is a hydraulic spring. 09Јgg} 1 Dida