Presumably everyone is not very familiar with the components and functions of the blister machine. Today, the editor of this website will introduce to you the 7 major components and their functions of the blister machine~! Let's read this article with the editor!

 

1. Clamping equipment

 

    When the plastic sheet is formed, the sheet is fixed on the clamping device. In thermoforming general-purpose and composite thermoforming machines, clamping devices that are convenient for fixing sheets of various sizes are often used. Some are equipped with a clamping frame for the entire forming machine.

 

2. Heating equipment

 

One of the main processes 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 the temperature heat transfer after the radiant surface, the distance between the sheet and the heater, the radiant energy absorption coefficient, the characteristics of the heater surface and the thermal physical properties of the material. Commonly used heaters are electric heaters, crystal radiators and infrared heaters.

 

 

3. Vacuum equipment

 

The vacuum system consists of vacuum pumps, gas storage tanks, valves, pipelines and vacuum gauges. In vacuum forming, a separate vacuum pump is often used. The vacuum of this pump should reach 0.07~0.09 Mpa (520mmHg) or more. Gas storage tanks are generally cylindrical boxes welded with thin steel plates, with an oval bottom. The capacity of the gas storage tank should be at least half the capacity of the largest forming chamber. Appropriate valves must be installed on the vacuum line to control the narrow vacuum capacity. The rotating power of the vacuum pump is determined by the size of the molding equipment and the molding speed. Larger or faster equipment is usually as large as 2-4KW. The size of the vacuum central system depends on the specific production and development requirements of the factory.

 

 

4. Compressed air equipment

 

The pneumatic system can be composed of the molding machine itself with compressors, gas storage tanks, workshop supervisory circuits, valves, etc. The molding machine needs compressed air with a pressure of 0.4-0.5MPa, and various vacuum suction molding machines widely use piston air compressors. It can also be supplied by a large screw air compressor in the whole plant. In addition to a large amount of compressed air used for molding, a part of it is used for demoulding, external cooling and

The power for manipulating the mold frame and moving the sheet.

 

 

Five, cooling equipment

 

In order to improve production efficiency, the vacuum molded products often need to be cooled before demolding. The ideal situation is that the inner and outer surfaces of the part in contact with the mold are cooled, and it is best to use a mold with a built-in cooling coil. For non-metal molds, such as wood, plaster, glass fiber reinforced plastic, epoxy resin and other molds, because they cannot be cooled by water, air cooling can be used instead, and water mist can be added to cool the outer surface of the vacuum molded parts. If natural cooling is used in production, annealed parts can be obtained, which is beneficial to improve the impact resistance of the parts. Although water cooling has high production efficiency, the internal stress of the parts is relatively large.

 

 

Six, demoulding equipment

 

Demolding is to remove the product out of the mold, usually whether it is a concave mold or a convex mold. In most cases, the product cools and shrinks and adheres to the mold. Therefore, it is demolded by vacuum suction holes or blowing in the opposite direction.

Especially for molds with small demolding angles or concave molds, the demolding mechanism is used to collide or vibrate to demold at the same time. Sometimes a mold release agent is applied to the sheet and the mold or the mold surface is sprayed with Teflon.

 

 

Seven, control equipment

The control system generally includes the control of various parameters and actions of instruments, meters, pipelines, and valves in the process of vacuum forming and finishing. The control methods include manual, electrical-mechanical automatic control, computer control, etc. The specific selection should be based on the initial investment labor cost, technical requirements, raw material costs, production and maintenance equipment costs and other factors.

 

Well, the above is the relevant content of "Seven Components of Blister Machines and Their Functions" collected by the editor of this website for you. I hope it can be helpful to you! Shenzhen Yonghengsheng Machinery Manufacturing Co., Ltd. has been committed to research and development for 16 years to provide Shenzhen blister machine, Shenzhen blister machine, Shenzhen vacuum blister machine, Shenzhen thick film blister machine, Shenzhen blister forming machine, Shenzhen thermoforming machine, Blister machine hotline: 0755-84817776

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