Negative Pressure Automatic Butt-joint Machine

Through vacuum pumping, the air will be drawn out of the sand between the special sand box to make the sand in the sealed sand box firm, so that the sand mold has a certain tightness, and the interior is in the vacuum negative pressure state. When pouring, vacuum pumping can accelerate the exhaust velocity and reduce the exhaust volume, reduce the pressure of the metal liquid and mold interface, speed up metal liquid flow, improve the filling ability of the liquid and reduce the carbon black defect on the surface of the casting, and also inhibit the burning of foam, promote its gasification. With the fluidity and formability of the molten metal, the contour of the casting is clear.

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Product Description

Product Structure:

The automatic butt joint is mainly composed of butt rubber block, butt joint connecting pipe, driving cylinder, equipment frame, distributor connection pipe and control solenoid valve. The connecting pipe of the docking device is divided into two branch pipes, which are respectively controlled by pipeline valves, and a branch can be closed when holding the pressure. Bottom suction negative pressure automatic butt joint and side suction negative pressure automatic butt joint can be selected.

Negative Pressure Automatic Butt-joint Machine

Product Performance and Characteristics:

1. Connection method: through the control cylinder to realize the docking of the negative pressure system and the sand box.

2. The automatic joint solves the problems of high working load, low efficiency and unsafe if pressure connecting is made manually.

3. The interlock of the operation system avoids crash because of the PLC control.

Model selection and technical parameters:

Model	Dimension		jointing stroke	joint diameter
ROF1-Ⅲ(01)	side vacuuming joint	bottom vacuuming joint	80-150mm	φ80mm
	1330×460×540	1100×300×1250

(Note: the specific model is based on the actual design.)

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