Stepped die jacking and returning device for gypsum block mold

Abstract

The invention discloses a stepped die jacking and returning device for a gypsum block mold. The device comprises an upper cross beam with a mounting plate, a lower cross beam, a movable cross beam, four guide rods, a mold with N cavities, bottom plates at the lower opening ends of all the cavities and an oil cylinder, wherein two push rods are laterally connected below each bottom plate; the oil cylinder is arranged below the lower cross beam, and the oil cylinder rod of the oil cylinder is connected with the movable cross beam; a pressing plate and a square gasket which are superposed up anddown are arranged on the upper side of the movable cross beam to form a chamber; a through hole is formed in the pressing plate opposite to the lower end of each push rod; the lower end of each push rod passes through a corresponding through hole, is extended into the chamber and is connected with a flange plate of which the sectional area is larger than the area of the through hole; at least onegroup of cushion blocks in the chamber are arranged on the movable cross beam; a group of cushion blocks are provided with two cushion plates; the two cushion plates are respectively opposite to two flange plates at the lower ends of the two push rods connected on the lower side of the same bottom plate; and the height of the chamber is greater than the sum of the thicknesses of the cushion plates and the flange plates. The device has a simple structure, and stepped die jacking and returning can be realized, so that the configuration of the oil cylinder is relatively low and the jacking difficulty of a gypsum block is relatively low; therefore, gypsum block production equipment has reduced energy consumption and high production efficiency, and is easy to operate.

Description

technical field [0001] The invention relates to a gypsum block mold stepped top mold return device. Background technique [0002] Gypsum block is one of the green and environmentally friendly building materials that have been vigorously promoted in my country in recent years, with a wide range of applications. At present, the equipment for producing gypsum blocks in China is divided into two categories according to the different ways of ejecting the gypsum blocks: one is the open mode, and the other is the extrusion ejection type. [0003] The extrusion ejection type is now the mainstream production method. The equipment for producing gypsum blocks under this method has the structure of the mold top mold return device equipped in it: the horizontally arranged upper beam and the lower beam are connected in a square arrangement. The four vertical guide rods of the horizontally arranged movable beams are slidingly matched with the four vertical guide rods, and the lower beam i...

AI Technical Summary

Problems solved by technology

[0004] Normally, when the initial setting of gypsum makes the gypsum block have a certain strength, it is most scientific and reasonable to eject the gypsum block. However, the initial setting time of gypsum from different origins and different batches varies greatly, which is difficult in actual production. In addition, the solidification and molding of gypsum blocks is an exothermic reaction. Once the best ejection time is missed, the gypsum blocks will gradually expand and expand, making it more difficult to eject the gypsum blocks, or even unable to eject them. out, also requires a lot of ejection force

Therefore, in order to achieve the required ejection force of the top mold, the structure and hydraulic system of the existing mold top mold return device are relatively complicated and heavy, and the bore of the oil cylinder is generally large to increase the hydraulic pressure, which makes the equipment for producing gypsum blocks Increased energy consumption, complicated operation, and low production efficiency

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