保定市乐通机械设备科技有限公司

1、震实式造型机

1. Jolt moulding machine

此种造型机工作原理是砂箱和模样固定在造型机的工作台上﹐利用工作台下落时与砧座撞击面的相撞﹑砂粒的惯性来紧实砂型。这种造型机的优点是设备造价低，操作简单。缺点是砂型上下紧实度不均匀，尤其上部紧实度不足，噪声严重，工人劳动强度大，生产效率低下，环境污染严重，对厂房基础冲击较大。该机已经逐步被微震压实造型机所代替。

The working principle of the molding machine is that the sand box and the shape are fixed on the working platform of the molding machine, and the sand mould is pressed by the collision of the landing surface of the worktable and the inertia of the sand grains to compact the sand mold. The utility model has the advantages of low equipment cost and simple operation. The disadvantage is that the upper and lower compaction degree of the sand mould is uneven, especially the upper compactness is not enough, the noise is serious, the labor intensity of the workers is great, the production efficiency is low, the environmental pollution is serious, and the impact on the foundation of the factory building is larger. The machine has been gradually replaced by a jolt compaction molding machine.

2、震压式造型机

2, shock molding machine

该机的工作原理是对震实的砂型再进行压实，可以获得上下部紧实的砂型。常用的是微震压实式造型机(微震压实式造型机 )是利用工作台下落与浮动的震铁相撞，微震紧实型砂，再进行压实。微震是以较高频率(500～1000次/分)，小振幅(5～25毫米)的振动代替震实式造型机的低频率 (60～120次/分)﹑大振幅的振动。这种造型机的优点是设备造价低，操作简单，所造砂型紧实度基本均匀，对厂房基础要求也较低。缺点是噪声严重，工人劳动强度大，生产效率低下，环境污染较严重。

The working principle of the machine is that the sand mould is compacted again, and the sand mould with upper and lower parts can be compacted. Commonly used is the micro vibration compaction molding machine (microseismic compaction molding machine) is the use of landing gear and floating shock iron collision, microseismic compaction molding sand, and then compaction. MS is a higher frequency (500 ~ 1000 / min), small amplitude (5 to 25 mm) of low frequency vibration instead of Jolt Molding Machine rate (60 to 120 bpm), large amplitude vibration. The advantage of the molding machine is that the equipment cost is low and the operation is simple. The compaction degree of the sand mould is basically uniform, and the requirement of the workshop is low. The disadvantage is that the noise is serious, the labor intensity of the workers is large, the production efficiency is low, and the environmental pollution is serious.

3、压实式造型机

3, compaction molding machine

该机的工作原理是利用气压或液压通过压头或模样对砂箱内的型砂施加压力来紧实型砂。其压强一般为0.25～0.4兆帕。这种造型机﹐使远离施压面的砂型紧实度差。20世纪50年代初出现了高压造型机﹐砂型平面上的压强在 0.7兆帕以上。高压造型机的压头分为平压头﹑成形压头和多触头压头等几种结构形式。其中以高压多触头造型机应用最为广泛。

The working principle of the machine is to press sand or pressure on the sand in the sand box by pressing the head or shape to compact the sand. Its pressure is generally 0.25 ~ 0.4 mpa. The molding machine keeps the sand tight from the pressure face. In the early 1950s, a high-pressure molding machine appeared. The pressure on the sand mould was above 0.7 mpa. The head of the high-pressure moulding machine is divided into several structural forms, such as flat head, forming head and multi contact pressing head. Among them, the high pressure multi contact molding machine is most widely used.

高压多触头造型机压头分割成许多可上下运动的小方块──触头﹐通过液压缸可获得很大的压实力。压实时﹐各触头按其下面的模样高度(即受压砂层厚度)施加相应的压力﹐使砂型获得很高的﹑均匀的紧实度和硬度。这类造型机都设有微震机构﹐能够适应复杂模样的造型。高压多触头造型机多采用四立柱结构﹐有单工位式和双工位式。为了适应中小批量铸件的生产﹐这种造型机多附有模板快换装置﹐更换模板时﹐造型机不必停机。这种造型机的优点是所造砂型紧实度好。缺点是噪声较严重，工人劳动强度大，生产效率低下，环境污染较严重。

Divided into many blocks, can move up and down contact pressure head high pressure squeeze moulding machine, the hydraulic cylinder can obtain great compaction force. When compacting, each contact exerts the corresponding pressure according to the height of its appearance (that is to say, the thickness of the compressed sand layer), so that the sand mold gets a high degree of uniform compactness and hardness. This type of molding machine is equipped with micro vibration mechanism, which can adapt to the appearance of complex shapes. High pressure multi contact moulding machine adopts four column structure, single station type and double station type. In order to adapt to the production of medium and small batches of castings, the molding machine is often equipped with a template quick change device. When the template is replaced, the molding machine needs no downtime. The advantage of this molding machine is that the sand mold has good compactness. The disadvantage is the noise is serious, workers labor intensity, production efficiency is low, environmental pollution is more serious.