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Seven vacuum molding machine molding equipment

by:Mengxing     2020-07-18
Suction molding machine molding as usual go through many steps, through the common of the seven combination eventually achieved suction machines in operation. A, clamping equipment of plastic forming, sheet is fixed on the clamping assembly. In hot forming of universal and composite thermoforming machine used more for fixed clamping assembly of various size sheet. Have a plenty of the whole machine with a set of clamping frame. The clamping assembly can be divided into two kinds: one kind is frame type, another kind is split type. Frame type clamping assembly consists of upper and lower two frameworks. Sheet between two frameworks. Framework opens, under the framework of maintaining a constant condition as usual. All types of simplex bit molding machine on the bottom of the frame fixed on the molding room directly. Parison and products with the hand pull out the manual and semi-active molding machine, when the frame size is very big, there are open the safe operating within the scope of the frame assembly. The larger parison forming glide, clamping force can in a relatively wide range adjustment, therefore, the two bags rubber roller, with mutual compression spring, and is equipped with a pressure adjusting assembly. Continue's clamping piece molding machine is the zipper on both sides with the front and rear brake work together. Clamping assembly had better use active control to agile, can contribute to progress parts quality and compliance. Second, vacuum heating thermoplastic plastic sheet and film forming process, the heating is one of the important process of sheet. Electric heating duration and quality depends on the structure of the heater in chengdu personnel test web page, after the appearance of radiation temperature of heat transfer of thermal inertia, the distance between the sheet and heater, radiant energy absorbing coefficient of website production prices, heater appearance characteristics and thermal physical properties of materials. Commonly used radiator heater electric heater, crystal and infrared heater. Vacuum system consists of vacuum pumps, vacuum equipment and storage tanks, valves, piping, and vacuum gauge, etc, used in vacuum forming separate type vacuum pump, this pump vacuum should reach 0. 7 ~ 0. 09 Mpa( 520毫米汞柱) The above. Storage tanks as usual is made of steel sheet welding cylindrical box body, bottom is elliptical. The capacity of the storage tank should be at least half than maximum molding chamber capacity. You must have appropriate valves, vacuum tubes, to control the vacuum narrow capacity. The rotation of the vacuum pump power is determined by the size of the molding equipment and forming speed, larger or molding equipment commonly used to 2 - fast 4 kw. Vacuum system among large factory in detail the requirements of the production and development. Four, compressed air equipment pneumatic system by the machine itself with the compressor, storage tanks, workshop director path sets, valve, etc. Molding machine necessary pressure to zero. 4 - 0. 5 mpa compressed air, widely used in all kinds of vacuum plastic molding machine piston type air compressor. You can also use large supply screw air compressor of the whole factory. In addition to a large number of compressed air shall be in shape, there are at the beginning of the part when used for stripping, finished product outside such as cooling and manipulation of the mold frame and operation sheet parts movement. Five, the cooling equipment to improve production obedience, vacuum forming products before stripping cooling is often required. Ideally parts inside outside looks and appearance are in contact with the mould cooling, had better use the built-in cooling coil and mold. For non-metallic mold, such as wood, plaster, glass fiber reinforced plastic, epoxy resin, such as mold, unable to use water, can use air cooling, and can add water spray to cool vacuum forming parts of the outer appearance. If the production of annealing parts can be obtained using natural cooling, the impact resistance of conducive to progress. Water cooling, although high obedience, internal stress is larger parts. Six, stripping equipment stripping is the finished product will be moved out of die, punch, usually either die those most occasions because of finished product cooling contraction and against mould, so by vacuum attract air hole or the opposite direction to release. Especially for draft of small or die mold, at the same time using demoulding mechanism against or vibration demould, daub on accident on the sheet and mould release agent or mold surface spray teflon treatment. Seven as usual, control equipment control system including the vacuum forming process of molding and finishing the including of instruments, meters, pipe, valves, various parameters and the movement control. Control style manual and electric - Mechanical control, computer control, etc. , detail selection according to the initial investment and labor, technical requirements, material cost, production and maintenance of equipment cost factors such as comprehensive consideration.
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