SU975180A1

SU975180A1 - Apparatus for producing flaskless casting moulds

Info

Publication number: SU975180A1
Application number: SU813294630A
Authority: SU
Inventors: Владимир Николаевич Леснов; Борис Пантелеймонович Благонравов; Юрий Иванович Беляков; Алексей Васильевич Уваров; Ирина Степановна Милитосян
Original assignee: Московский автомеханический институт
Priority date: 1981-05-29
Filing date: 1981-05-29
Publication date: 1982-11-23

Description

Изобретение относится к литейному производству, в частности к изготовлению разовой литейной формы.The invention relates to foundry, in particular to the manufacture of a single mold.

Известно устройство, в котором камера прессования выполнена в виде рамы, с двумя окнами и приводом для возвратно-поступательного перемещения [1] .A device is known in which the pressing chamber is made in the form of a frame, with two windows and a drive for reciprocating movement [1].

Однако при уплотнении прессованием стенки камеры прессования нагру- ^,ижаются силами бокового давления, достигающими 0,4-0,5 вертикального сжимающего напряжения. Это приводит к тому, что часть вертикального сжимающего напряжения передаётся на осно-15 вание машины через камеру прессования за счет трения При уплотнении смеси.However, during compaction by pressing, the walls of the pressing chamber are loaded ^{, and they} are pressed by lateral pressure forces reaching 0.4-0.5 of vertical compressive stress. This leads to the fact that part of the vertical compressive stress is transmitted to the base of the machine through the pressing chamber due to friction during compaction of the mixture.

Наиболее близким по технической сущности и достигаемому результату является устройство для изготовления безопочных литейных форм содержащее основание и установленные на нем камеру прессования и размещенные друг против друга две подмодельные плиты [2].The closest in technical essence and the achieved result is a device for the manufacture of safety casting molds containing a base and a pressing chamber mounted on it and two submodels placed against each other [2].

Недостатком .известного устройства является жесткая связь камеры прессования с основанием машины, что не позволяет получить высокую плотность по всему объему формы, а также использовать способ двухстороннего прессования смеси.A disadvantage of the known device is the tight connection of the pressing chamber with the base of the machine, which does not allow to obtain a high density over the entire volume of the mold, as well as to use the method of two-sided pressing of the mixture.

Целью изобретения является повышение равномерности уплотнения.формы.The aim of the invention is to increase the uniformity of compaction. Forms.

Поставленная цель достигается тем, что в устройстве для изготовления безопочных литейных форм, содержащем основание и установленные на нем камеру прессования и подмодельные плиты, размещенные одна против другой, ' камера прессования установлена на основании через роликовые опоры и снабжена механизмом возврата в исходное положение.This goal is achieved by the fact that in the device for the manufacture of non-flask foundry molds containing the base and the pressing chamber and model plates placed on it, placed one against the other, the pressing chamber is mounted on the base through roller bearings and is equipped with a mechanism for returning to the initial position.

На чертеже показана камера прессования, поперечный разрез:.The drawing shows a pressing chamber, a cross section :.

Устройство, содержит камеру 1.. прессования, установленную через ролико20 вые опоры 2 на основании машины 3, механизм 4 возврата, прессовые плиты 5 и 6.The device comprises a pressing chamber 1 .. installed through roller bearings 2 on the base of machine 3, a return mechanism 4, and press plates 5 and 6.

Работа устройства осуществляется следующим образом.The operation of the device is as follows.

“ Камера.1 прессования заполняется формовочной смесью. Активная нагрузка Р через прессовую плиту 5 передается на формовочную смесь. В этот мо_ мент времени привод механизма возвра’θ та 4 отключен и камера прессования может перемещаться влево или вправо. Усилие Р замыкается на основание машины 3 через формовочную смесь и прессовую плиту 6.“Press chamber 1 is filled with molding sand. The active load P through the press plate 5 is transferred to the molding mixture. At this moment, the drive of the return mechanism θ 4 is turned off and the bale chamber can move left or right. The force P is closed to the base of the machine 3 through the molding mixture and the press plate 6.

В конце работы машины камера прессования центрируется относительно ос- 5 новация машины механизмом возврата 4. В результате чего повышается равномерность плотности формы.At the end of the operation of the machine, the pressing chamber is centered relative to the base of the machine by the return mechanism 4. As a result, the uniformity of the shape density is increased.

Claims

The invention relates to foundry, in particular to the manufacture of a single casting mold. A device is known in which the pressing chamber is made in the form of a frame, with two windows and a drive for reciprocating movement 1. However, when compacted by pressing, the walls of the pressing chamber are loaded by lateral pressure, reaching 0.4-0.5 vertical compressive stress. This leads to the fact that part of the vertical compressive stress is transferred to the base of the machine through the pressing chamber due to friction during the compaction of the mixture. The closest in technical essence and the achieved result is a device for the manufacture of furnace-free casting molds containing a base and an extrusion chamber mounted on it and two sub-model sections 2 placed opposite each other. A disadvantage of the known device is the rigid connection of the extrusion chamber with the base of the machine, which does not allow to obtain a high density throughout the volume of the mold, as well as to use the method of two-sided pressing of the mixture. The aim of the invention is to improve the uniformity of the seal, shape. This goal is achieved by the fact that, in a device for the manufacture of flaskless molds, comprising a base and mounted on it a pressing chamber and submodeled plates placed opposite one another, the pressing chamber is mounted on. basis through roller bearings and equipped with a mechanism to return to its original position. The drawing shows a pressing chamber, a cross-sectional view; The device contains a chamber 1, pressing, installed through roller supports 2 on the base of the machine 3, a return mechanism 4, press plates 5 and 6. The device is operated as follows. The pressing chamber 1 is filled with molding sand. The active load P is transmitted through the press plate 5 to the molding sand. At this point in time, the drive of the return mechanism 4 is turned off and the pressing chamber can be moved to the left or right. The force P is closed on the base of the machine 3 through the molding mixture and the prestress plate 6. At the end of the operation of the machine, the compression chamber is centered relative to the base of the machine by the return mechanism 4 As a result, the uniformity of the mold density increases. The invention The device for the manufacture of bezopochny casting molds, containing the base and installed on it a pressing chamber and submodel plates, placed one against the other, such that, in order to improve the uniformity, compacted. neither the mold, the pressing chamber is installed on the base through the roller bearings and is equipped with a reset mechanism. Sources of information taken into account in the examination 1. UK patent number 803332, cl. In 3 F, 1958.

2. Patent of Denmark 119373, cl. B 22 C. 25700, 1971.