SU1183367A1 - Device for manufacturing half-finishing product by slip casting method in production of quartz articles - Google Patents

Abstract

1. DEVICE FOR MANUFACTURING PREPARATIONS BY THE METHOD OF 1 SECTIONAL CASTING IN THE PRODUCTION OF QUARTZ. PRODUCTS, containing a rotary machine with a mold for the workpieces, up to; that, in order to improve the quality of the blanks, it is equipped with a node for degassing the slip, filled in the form of a container, in the central part of which is placed a tube with a check valve and an umbrella reflector, and the drying unit is spread over the forms carousel machine. 2. A device according to claim 1, wherein the drying unit comprises a fan, a heater. located in the casing, and an air vent,

Description

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1 The invention relates to devices for the production of hollow articles obtained by the slurry casting method, in particular obtained on the basis of a quartz glass suspension. The purpose of the invention is to improve the quality of the blanks. FIG. 1 shows a general view of the device in FIG. 2 is a diagram of the supply and discharge of the slipJ in FIG. 3 is a diagram of a lever-cam mechanism; in fig. 4 shows the pouring unit of the pucker of FIG. 5 - node suction slip; in fig. 6 shows the degassing assembly of the slipJ in FIG. 7-node drying. The device consists of a carousel machine 1, molds 2 for casting, metering device 3, node 4 for suction of the slip, node 5 for drying, node 6 for degassing the slip, drive 7 for filling, sucking and degassing the slip, as well as washing the tanks of the device with water. The carousel machine 1 (six-position) is designed to fix forms 2 with blanks in strictly defined positions. The dispenser 3 is intended for dosed pouring of the internal cavity of the plaster mold with a slip. It consists of a tank 8, in the lower part of which a sleeve 9 is fixed with a reflector 10 for collecting the suspension from the supply tank 11. A quick-detachable transparent cap 12 is placed in the upper part of the dispenser 3, under which the vacuum pipe 13 is inserted. a cup 14 with a shut-off drain valve 15, the control rod to which is brought out through the upper lip. The valve 15 is locked by the force of the cylindrical spring 16 and opens under the influence of the lever-cam mechanism (Fig. 3). The volume of the expendable cup 14 is comparable with the volume of the internal cavity of the plaster mold 2. The chapiker suction unit 4 is designed to remove the excess slip from the plaster mold 2 after forming the blank . The assembly consists of a tank 17, in the lower part of which a nozzle 18 with a reflector 19 is fixed for suction of a slip from the mold. The slip of the slip into the tank 20 takes place via the drain hose 21 with the reverse valve 22. The movement of the nozzle 18 into 72 the internal cavity 2 during the suction of the slip and back is ensured by the device guide 23 from the drive through a lever-cam mechanism containing a lever, cams, shaft. Fixation against rotation is provided, and smooth movement is ensured by installing a counterweight 24. The degassing unit 6 of the chucker (FIG. 6) is designed to remove air bubbles absorbed by the slurry during suction and draining into the tank, and consists of a tank 25, in the central part of which a tube 26 is provided with a check valve 27 and an umbrella reflector 28 to form a film of a slip. The lower end of the tube is connected through a stop valve 29 with a sleeve for a slip set from the drain tank 20. In the lower part of the tank 25 there is a drain sleeve 30 with a check valve 31 designed to drain the degassed slip into the tank 11. The drive 7 is designed to control the lever-cam mechanisms that provide the opening and closing of the valves of the dispenser 3, the suction device 4 and the valves 32-36 of the vacuum system, as well as the movement of the nozzle 18 into the internal cavity of the mold. The drive includes a direct-current motor 37, which, through two worm gearboxes -38 l 39 and coupling 40, transmits rotation to the drive shaft 41. On the shaft, installed in two detachable bearing supports, there are fixed cams 42-47 that control the lever mechanisms. The billet drying unit is designed to supply heated air to the molds. The assembly consists of a fan 48 with an electric motor 49, a heater 50 and a casing 51 guiding the heated air into the internal cavity of the workpiece into an umbrella 52. Drying is performed in two positions of the molds with the workpieces before unloading. The vacuum system serves to create a vacuum in the dispenser, in the suction and degassing nodes of the slurry. The system consists of a water-ring vacuum pump, a receiver and a number of shut-off valves and valves. , 3 The device operates as follows. The table of the carousel, turning successively, cyclically takes six positions. The plaster mold is set to the initial position, the slip is poured into the mold, the mold is held for a certain time to ensure the formation of the workpiece, the slip is drained from the mold, and the workpiece is dried. The carousel is rotated by position manually. Technological operations are carried out automatically, for which the drive motor is activated. The cams of the drive shaft, rotate, zozdayst; This means that all the necessary operations are carried out. Thus, the dispenser valve on the vacuum line opens and the slurry is sucked into the dispenser, then the valve opens, the fluid connection joins the mold, and the slip is merged into the mold. The dose of the pucker is determined by the time 67.4 of the operation, which can be adjusted by varying the speed of rotation of the drive shaft, as well as by the profile of the control cam. After a certain time, the mold moves under the suction unit, the nozzle starts to move down, loses, zats into the slip and the slip suction occurs. After the nozzle reaches the bottom of the mold, an upward movement begins. At the same time, the capacity valve of the suction device is opened and the slip is leaked to the tank. At the same time, the tank of the degassing unit is connected by vacuum, the slip is drained into this tank and degassed, then the tank is connected to the atmosphere and the slip is drained into the supply tank. Forms with blanks are dried, moved to the first position, where they are rotated 180 ° and unloaded. The proposed device improves the quality of the cast billets and the yield of a single product.

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Claims (2)

I 1. DEVICE FOR MANUFACTURING PREPARATIONS BY THE SLIKE CASTING METHOD FOR THE PRODUCTION OF QUARTZ QUARTERS. PRODUCTS, comprising a rotary machine with blanks, a slurry dispenser, a slurry suction unit, a workpiece drying unit, an unloading unit, an electric motor, , in order to improve the quality of the workpieces, it is equipped with a slip degassing unit made in the form of a container, in the central part of which there is a tube with a check valve and an Umbrella reflector, and the drying unit is located above the carousel shapes nn machine. 2. The device according to π. 1, characterized in that the drying unit comprises a fan, a heater located in the casing, and an umbrella taking away air.