Vacuum degassing device having rough material overflow-resisting function
A vacuum degassing device and vulcanized silicone rubber technology, which is applied in the field of vacuum injection molding, can solve the problems of low production efficiency, inability to continue, and difficulty in meeting customer delivery requirements.
Inactive Publication Date: 2009-07-08
天津市天大银泰科技有限公司
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Problems solved by technology
At present, the vacuum injection molding machine commonly used combines the degassing of silica gel and the pouring process of plastic parts into one. The problem caused by this is: because the vulcanized silicone rubber (RTV) itself contains gas, it needs to be degassed by a vacuum machine.
However, vulcanized silicone rubber will foam and expand in a vacuum state, so RTV is easy to overflow the container, resulting in waste and even work failure
At the same time, the production efficiency of this process is low, and it is difficult to meet the customer's requirements for delivery time when there are many orders
Method used
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Embodiment Construction
[0008] The present invention will be further described below by specific examples.
[0009] Connect the parts as shown in the figure. The main body of the degassing device in this embodiment is a cylinder with a diameter of 800 mm and a height of 700 mm. It is pumped by a vacuum pump and the vacuum degree can reach 95 Pa.
[0010] The top cover adopts flip-type transparent tempered glass for easy observation and operation. There are 3 pairs of brackets on both sides of the inner wall at the bottom of the body, the spacing between the brackets is 100mm, and the lowest bracket is 100mm from the bottom of the degassing device. This embodiment adopts the photoelectric sensor of EX-23 through-type side detection, the length of the positioning guide rail for fixing the photoelectric sensor is 150mm, and its center is 100mm away from the top of the degassing device. Before pumping air, place the pallet on a suitable bracket according to the size of the raw material barrel, and adju...
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The invention relates to a vacuum degassing device with the function of preventing vulcanized silicone rubber raw materials from overflowing. Including body, top cover, photoelectric sensor, vacuum pump, and pressure control transmitter, etc. Positioning guide rails are installed on both sides of the inner wall at the upper end of the body, and photoelectric sensors are installed on both sides of the positioning guide rail. The vacuum pump is connected with the main body through the shut-off valve. The electromagnetic vacuum baffle valve and the air release valve are connected to the body in parallel. The input end of the pressure control transmitter is connected to the body, and the output end is connected to the vacuum pump through a relay contactor; the electromagnetic vacuum baffle valve is connected in series to the receiving end of the photoelectric sensor through a relay control module, thereby forming a double closed-loop control mode. The invention utilizes a rail-type photoelectric sensor to detect the liquid level signal, and uses a relay module to control the opening and closing of the electromagnetic vacuum baffle valve, which can prevent the overflow of raw materials, realize the function of automatically completing the degassing of raw materials, and improve the production efficiency. The device can also be used in the vacuum degassing process of other viscous liquids.
Description
technical field [0001] The invention belongs to the technical field of vacuum injection molding, and in particular relates to a vacuum degassing device with the function of preventing raw materials from overflowing. Background technique [0002] Vacuum injection molding machine is a device for quickly copying or trial-producing various plastic products. It is widely used in the development process of new products, which can shorten the development cycle of new products, reduce development costs and reduce development risks. With the continuous expansion of market demand for vacuum injection molding products, a situation of many production orders and tight delivery time has gradually formed. The vacuum injection molding machine commonly used at present combines the degassing of silica gel and the pouring process of plastic parts into one. The problem caused by this is: because the vulcanized silicone rubber (RTV) itself contains gas, it needs to be degassed by a vacuum machin...
Claims
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IPC IPC(8): B29B13/00
Inventor 崔国起孙艳辉窦连贵
Owner 天津市天大银泰科技有限公司