SU1611550A1 - Mulding automatic machine for producing facuum-film moulds - Google Patents

Abstract

The invention relates to foundry, in particular, to devices for producing predominantly flaskless molds by vacuum molding. The purpose of the invention is to expand the product range and increase the flexibility of the system by ensuring non-stop replacement of model tooling and accumulation of manufactured forms. A molding machine consists of devices for applying a synthetic film, applying a nonstick coating, drying a nonstick coating, loading a molding material, drawing models, a vertically closed transport system, a store of model plates, and rotary tables. The use of the invention allows to significantly expand the range of castings in the conditions of non-stop operation of the molding machine. 2 hp f-ly, 3 ill.

Description

The invention relates to foundry, in particular, to devices for the production of casting molds, preferably flaskless, by a vacuum forming method.

The purpose of the invention is to improve the product range and increase the flexibility of the system by ensuring non-stop replacement of model equipment and accumulation of manufactured forms.

FIG. 1 shows a molding machine for making flaskless vacuum-film forms; FIG. 2 is a section A-A in FIG. one; in fig. 3 is a view B in FIG. 1 (synthetic film cutter with vacuumized model plate).

The automatic molding machine contains five technological positions with devices: applying a synthetic film 1 (Fig. 1), applying a nonstick coating 2, drying a nonstick coating 3, loading the molding material 4 and drawing models 5. Technological positions with devices 1-4 are located on the top a vertical vertically closed transport system made on the basis of a non-driven roller table 6 with positively oriented pushers 7 and 8, and a device 5 on the section of the reverse drive roller table 9 on the lower floor dy lifts 10 and 11. In

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In addition, on the lower floor there are two mara-mia evacuated model plates 12 and 13 (Fig. 2), located along the outer edges of the roller table 9 and connected with it via rotary tables 14 and 15.

Each of the units of the model equipment (the model plate being vacuumed) of the molding machine is represented as a vacuum 16 and a model 17 plates with a model container 18 fastened together. At the same time, the stop 19 of the drive of the wire cutter 20 synthetic film 21 (in Fig. 1, film 21 is depicted as device 1 loaded from a roll under the heater) mounted on a rotary lever 7.7. with roller 23 and located between the initial and subsequent technological positions of the upper floor or, respectively, between devices 1 and 2.

The forming machine operates as follows (the position shown in Fig. 1 is taken as the initial one).

, A molded vacuumized model plate (16-18) located in the zone of operation of the drawing device 5 according to a known technology removes the flaskless form (the indicated technology assumes docking of the model container 18 with the pallet, evacuation of the latter and drawing model plate 17). Then, the vacuum model plate is moved along the drive roller table 9 to the lift 10, which feeds it under the device 1, where a synthetic film 21 is also applied to the model container 1B using the well-known technology. nor partially combines. with the time of removal of the form and (and-pi) transportation of the vacuumized model plate. After applying a synthetic film, the model 16–18 vacuumed in vacuum is connected to a vacuum system (the vacuum system of the molding machine is not shown) together with a number of plates previously installed on the roller b (except for the installed on the last position of the upper floor

which at the specified time should be transferred by lift 11 to roller table 9), is moved by pusher 7 with pusher support 8 to the subsequent technological position of the upper floor, at the same time unwinding of film 21 and its section is performed by means of stop 19 and roller 23 on torch 22, the dielectric 22. Subsequently, using a device 2, a nonstick coating is applied and, with the same described above movement of the evacuated model plate, respectively, using a device 3 and 4 - sushi and coating and container loading model molding material. At the same time, the last of the listed operations according to the traditional technology is completed by vibrating the molding material, for this purpose in this case serves a pair of vibrators (two imbalance vibrators are needed to create in this case a vertically directional vector of vibrations) installed on the lift 11, which, after completion of the compaction process and lowers the evacuated model plate onto the drive roller table 9. When the vacuum plate model 9 that is located on the roll table 9 is being vacumed, the model plate with the shaped container 18 can be transported portirovats of the device 5 for removal zone shape or at vtol- .nenii accumulating forms nd transmitted through the rotary table 15 in the store 13. In the first of these cases roller 9 operates in the forward, in the second - in the reversing mode. At the same time, regardless of the address of the molded vakuzt of the model plate, but if the latter is located outside the roller table 9 (for example, on the table of the elevator 11, device 5 or 13), a new plate can be inserted from the magazine 12 through the rotary table 14, starting from the elevator 10, passes the flowed full technological cycle of vacuum forming on a molding machine. The space vacated by the store 12 after the introduction of a new model plate is mainly taken up by the plate that was drawn through the drawing device, i.e. after removing the flaskless vacuum form from it.

The use of the invention will significantly expand the range from 5161.

in the conditions of the non-stop operation of the molding machine.

Claims (3)

1. Forming machine for manufacturing vacuum-film forms, predominantly safety-free, containing installed in a technological sequence devices for applying a synthetic film, cutting it, loading molding material and drawing models, evacuated model plates installed in series with the possibility of plane-parallel movement on two floors vertically -closed transport system by means of pushers and lifts, characterized in that, in order to expand the product range and increase system flexibility by ensuring non-stop replacement of model tooling and o 5506 vanilla mold manufacturing, the lower floor transport system is designed as a reversible drive roller conveyor with one or more magazine stores, and the device for applying a synthetic film is located at the extreme position of the upper floor above the lift, 2. The molding machine according to claim 1, characterized in that the model drawing device is located on the section of the drive roller table between elevator # 1, and the drive stores are located on the outer edges of the said section, 3. The forming machine according to claim 1, characterized in that the 20 synthetic cutter; the film is mounted on a rotary shaft, located on the upper floor and connected to a drive for moving the vacuumable model PLT1T. / 7 /