SU1338962A1 - Moulding machine for making half-moulds - Google Patents

Abstract

The invention relates to foundry, in particular, to devices for making one-off sand and clay forms. The purpose of the invention is to improve the distribution of the density of the mixture over the volume of the mold. The device contains parallel spaced perforated plates 10-12. The bottom plates 11 and 12 are rigidly mounted with a gap on the rods 13 of the pressing mechanism 4, and the top 10 are mounted on the rods of the prepressing mechanism with the possibility of vertical movement and spring-loaded. The holes in the plates are placed with an offset by the diameter of the hole of the underlying plate. 4 il. J5 W 2 / (L 00 with CX) with 05 HchE

Description

The invention relates to foundry, in particular, to machines for the manufacture of disposable foundry sand-clay forms by dynamic methods, and can be used in automatic casting lines.

The purpose of the invention is to improve the distribution of the density of the mixture over the volume of the mold.

FIG. 1 shows a diagram of the molding machine in the initial polishing; in fig. 2 — molding unit before the molding sand mixture; in fig. 3 is the same at the beginning of compaction; 4 to 15, the result of which the mixture begins to sweep the same at the end of the seal.

The molding machine for making the lower half-molds consists of a bed 1 with a receiver 2, which is connected to the network pressure by an opening 3, Inside the receiver 2 there is a 4-pressing mechanism, and an air sealing head 5 is mounted on top, which is connected to the receiver 2 by a quick-action valve 6. On an air sealing head 5 is provided with a filling frame 7 with a flask 8. The working surface of the air sealing head 5 is formed by a rigid pressing block 9 consisting of three perforated plates 10-12, two of which the bottom (bottom) 11 and 12 are fixed on the rods 13 of the mechanism 4 for the cushioning, and the plate 10 is installed to rise towards the model plate 17 and at the same time receives a certain amount of kinetic energy, which goes into the work of compaction

20 when the mixture hits the model. The mixture is additionally compacted by a prepressor pad 9, after which the model is drawn through a pressing mechanism 16. The finished semi-25 mold is moved by means of the drive rollers 19 to the position of inserting the rods and the assembly, after which the pressing mechanism 4 is lowered to the initial position.

thirty

Then the cycle repeats. Using this machine will improve the quality of the casting molds by improving the distribution of the limited vertical density of the mixture over the volume of the mold. The movement on the rods 13 and the sub-spring can be completed with automatic ones. The support lines, columns 14, on which the crosspiece 15 with the pressing mechanism 16 of the model plate 17, the frame 18 of the drive 40 rollers 19 and the frame 20, on which the metering 21, the loading 22 devices and the pusher 23. are installed are strengthened on the frame 1 equipped with slide gates 24.

The molding machine works with the formula invented

A molding machine for making the lower half-molds, comprising a frame, an air sealing head, a repressor mechanism in the form of 45 hydraulic cylinders with rods mounted on the frame, and a filling

blown; im way.

The loading device 22, filled with molding sand, is pushed with the help of the pusher 23 into the working space of the machine and installed above the filling frame 7, after which the shutter 24 is opened and the filling frame is filled. The boot device then returns to its original position.

According to the drive rollers 19, the flask 8 is fed into the working space of the machine, after which the model plate

17 is pressed by the pressing mechanism 16 to the flask 8, and in the cavity of the receiver 2 a certain pressure of compressed air is created by a compressor (not shown), then the quick-action valve 6 is opened and the high-speed air flow rushes into the cavity of the air sealing head 5, at the same time pressing block 9, while the flow of air, the passage through the perforation of the plates 10-12, is distributed evenly over the entire surface of the coma mixture, in the direction of the model plate 17 and gets a certain amount cal energy that goes into sealing work

when you hit the mixture on the model. The mixture is additionally compacted by a prepressor pad 9, after which the model is drawn through a pressing mechanism 16. The finished mold half is driven by the drive rollers 19 to the position of insertion of the rods and the assembly, after which the pressing mechanism 4 is lowered to the initial position.

Then the cycle repeats. Using this machine will improve the quality of the casting molds by improving the distribution of the density of the mixture over the volume of the mold. It can be completed automatically lines

Claims (1)

Formula invented Then the cycle repeats. Using this machine will improve the quality of the casting molds by improving the distribution of the 35 density of the mixture throughout the volume of the mold. It can be equipped with automatic lines, 40 A molding machine for making the lower half-molds, comprising a frame, an air sealing head, a repressor mechanism in the form of 45 hydraulic cylinders with rods mounted on the frame, and a filling frame, supporting columns with a crossbeam, on which the model plate and boot device are placed, are about 50 so that, in order to improve the density distribution of the mixture over the volume of the mold, it is equipped with three perforated plates located one under another 55 the two lower ones are rigidly fixed on the rods of the additional pressing mechanism with a gap relative to each other, and the upper plate is placed freely on the rods of the additional pressing mechanism with the possibility vertical movement and spring-loaded relative to the underlying plates, with the holes of each plate placed offset by the diameter of the hole relative to the holes of the underlying plate. W P 1Z FIG. g Compiled by E. Khludov Editor S. Pekar Tehred M. Didyk Order 41,69 / 9 Circulation 740 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab, 4/5 Production, printing company, Uzhgorod, st. Project, 4 Proofreader G. Reshetnik