Modeling machine used for foundry_Energy saving induction heating equipment manufacturers

1. Seismic molding machine:
The working principle of this type of molding machine is that the sand box and the pattern are fixed on the work table of the molding machine. The sand type is tightened by the collision of the table with the impact surface of the anvil and the inertia of the sand. The advantage of this molding machine is that the equipment is low in cost and simple in operation . The disadvantage is that the upper and lower compactness of the sand type is not uniform , especially the upper compactness is insufficient, the noise is serious, the labor intensity of the worker is large, the production efficiency is low, the environmental pollution is serious, and the impact on the factory foundation is large. The machine has been gradually replaced by a microseismic compaction molding machine.
2 , shock molding machine :
The working principle of the machine is to compact the compacted sand mold to obtain a tight sand pattern at the upper and lower parts. It is commonly used that the microseismic compaction molding machine ( microseismic compaction molding machine ) uses the falling of the table to collide with the floating shock iron, and the microseismic compacted sand is compacted. The microseismic vibration is based on the high frequency (500 to 1000 beats /min ) and the small amplitude (5 to 25 mm ) vibration instead of the low frequency (60 to 120 beats / min ) of the vibrating molding machine and the large amplitude vibration. The advantage of this molding machine is that the equipment is low in cost, simple in operation , the sand-type compactness is basically uniform, and the requirements on the factory foundation are also low. The disadvantages are serious noise, high labor intensity, low production efficiency and serious environmental pollution.
3 , compact molding machine :
The working principle of the machine is to use the air pressure or hydraulic pressure to apply pressure to the molding sand in the sand box through the pressure head or the pattern to compact the sand. Its pressure is generally 0.25 to 0.4 MPa. This molding machine, so that sand compaction away from the pressing surface difference. The early 1950s there has been a high-pressure molding machine, pressure sand on the plane above 0.7 MPa. The pressure head of the high-pressure molding machine is divided into several structural forms such as a flat pressing head , a forming indenter and a multi-contact indenter. Among them, the high-pressure multi-contact molding machine is the most widely used.
Multi-contact high-pressure molding machine ram divided into many small blocks vertically movable contacts ──, great pressure strength can be obtained by a hydraulic cylinder. In real time, each contact applies a corresponding pressure according to the height of the pattern below it ( ie the thickness of the pressed sand layer ) . Achieve high, uniform compaction and hardness of the sand. These molding machines are equipped with a micro-shock structure that can adapt to the complex shape. The high-pressure multi-contact molding machine adopts four-column structure, and has single-station type and double-station type. In order to adapt to the production of small and medium-sized castings, this molding machine is often equipped with a template quick change device. The molding machine does not have to be shut down when the template is changed. The advantage of this molding machine is that the sand type is good . The disadvantage is that the noise is more serious, the labor intensity of the workers is large, the production efficiency is low, and the environmental pollution is serious.
4 , vertical injection type boxless molding machine :
It works by using compressed air to uniformly inject the molding sand into the flask for pre-compaction, and then applying external pressure for compaction. The vertical split type boxless injection molding machine does not use a sand box, and the molding sand is directly injected into the molding room with the template. The advantage of this machine is that the sand making type has high dimensional accuracy , and the cavity has a cavity on both sides, and the productivity is high . The disadvantage is that the core is difficult and the quality of the sand is very strict.
5 , horizontal split off-box injection molding machine :

This type of machine is currently the world's and domestic's highest-end sand molding machine. At present, only Japan's Xindong, Japan's Dongjiu, and the United States Hunter can produce, but because of its high price, the practical application of China's foundry industry is also very limited. It works by using compressed air to uniformly inject the molding sand into the flask for pre-compaction, and then applying external pressure for compaction. The horizontal splitting and out-of-box injection molding machine uses a sand box for modeling, and the sand type is formed after the mold is unpacked. The advantage of this machine is that the sand making type has high dimensional precision, and the lower core is convenient , and the double-station lower core can be realized, the productivity is high, and the molding sand has less leakage. The disadvantage is that the sand compactness is slightly insufficient, the sand type is flipped, and it is easy to collapse during the launching process. The other is that the cost is relatively high, and the average customer is more difficult to accept.

index Energy saving point	Energy saving measures	index Reduction	cut back energy used
Each type of casting Saving sand	The sand type has high firmness, good strength and small sand shape.	-20kg / type	-1 degree / type
Each type saves compressed air volume	Once shot, compacted, no need for multiple air pressure shocks.	-2 cubic / type	-0.5 degrees / type
Each type saves power consumption	The sand-type upper and lower boxes are directly clamped directly, and then pushed to the casting line, without the need to repeatedly flip and transfer the sand box.		-0.4 degrees / type
Each type saves new sand mixing amount	After increasing the sand strength, the sand content of the sand source can be increased.	-6kg / type	-0.3 degrees / type
total			-2.2 degrees / type

model index	Traditional shock molding machine	Traditional shock molding machine	Traditional compaction molding machine	Japanese-made horizontal type off-box molding machine
Productivity (seconds/type)	210	210	120	36
Sand powder leakage ( kg / H )	many	many	many	≤2
Power consumption index ( K )	3	3	2	1
Rejection rate (%)	≥10%	≥10%	≤8%	≤3%
Running noise (decibel)	≥85%	≥85%	≥80%	≤76%
Old sand back sand ratio (%)	≤85%	≤85%	≤90%	≥95%