Composition and function of plastic suction machine
Time:
2022-11-08
1、 Clamping equipment When the plastic sheet is formed, the sheet is fixed on the clamping device. Clamping devices convenient for fixing sheets of various sizes are often used on general and composite hot forming machines for hot forming. Some of the machines are equipped with a set of clamping frames. Clamping devices can be divided into two types: - type is frame type, and - type is split type. The frame type clamping device is composed of upper and lower frames. The sheet is sandwiched between two frames. When the frame is open, the lower frame generally remains fixed. The lower part of the upper frame of various types of single station molding machines is directly fixed on the molding room. When the frame size is large, the manual and semi-automatic molding machines that manually install parison and take out finished products are equipped with safety operating devices within the opening range of the frame. For parison with large forming slip, it is required that the clamping force can be adjusted in a wide range. For this purpose, two rubber covered rollers are used to compress each other with springs and equipped with a pressure regulating device. The clamping of the continuous pull sheet forming machine is the joint action of the zippers on both sides and the front and rear brakes. It is better to adopt automatic control for the clamping device so that it can act quickly and help to improve the quality and efficiency of parts. 2、 Heating equipment One of the main steps in the vacuum forming process of thermoplastic sheets and films is sheet heating. The duration and quality of electric heating depend on the structure of the heater, the thermal inertia of temperature transfer behind the radiant surface, the distance between the sheet and the heater, the radiation energy absorption coefficient, the characteristics of the heater surface and the thermophysical properties of the material. Common heaters include electric heater, crystal radiator and infrared heater.
1、 Clamping equipment
When the plastic sheet is formed, the sheet is fixed on the clamping device. Clamping devices convenient for fixing sheets of various sizes are often used on general and composite hot forming machines for hot forming. Some of the machines are equipped with a set of clamping frames.
Clamping devices can be divided into two types: - type is frame type, and - type is split type. The frame type clamping device is composed of upper and lower frames. The sheet is sandwiched between two frames. When the frame is open, the lower frame generally remains fixed. The lower part of the upper frame of various types of single station molding machines is directly fixed on the molding room. When the frame size is large, the manual and semi-automatic molding machines that manually install parison and take out finished products are equipped with safety operating devices within the opening range of the frame. For parison with large forming slip, it is required that the clamping force can be adjusted in a wide range. For this purpose, two rubber covered rollers are used to compress each other with springs and equipped with a pressure regulating device. The clamping of the continuous pull sheet forming machine is the joint action of the zippers on both sides and the front and rear brakes.
It is better to adopt automatic control for the clamping device so that it can act quickly and help to improve the quality and efficiency of parts.
2、 Heating equipment
One of the main steps in the vacuum forming process of thermoplastic sheets and films is sheet heating. The duration and quality of electric heating depend on the structure of the heater, the thermal inertia of temperature transfer behind the radiant surface, the distance between the sheet and the heater, the radiation energy absorption coefficient, the characteristics of the heater surface and the thermophysical properties of the material. Common heaters include electric heater, crystal radiator and infrared heater.
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