Chapter IV Structure Design and Manufacturing of Two-piece Cans
One or two cans
The two-piece can body consists of a side wall and a tank bottom. The molding method includes a shallow stretching method and a multi-stage stretching method.
The characteristics of two-piece cans and specifications
1. Classification of two-piece cans
1 Deep drawing tank 2 thinning drawing tank
2, the characteristics of two-piece cans
1The outer surface can be fully printed and decorated to improve the packaging effect. 2 Two-piece cans are light, the thin-walled 3 can body and the tank bottom are integrated and seamless, the mechanical strength is high, the sealing is good, and the can lid is easily sealed. 5 Simple molding process and quick molding
3, two pieces of material
4, the specifications of the two-piece cans
Three, two-piece can structure
1, can body 2, can lid
Four, two-piece can body manufacturing process and quality inspection
1, can body manufacturing process
1 Shallow stretch tank (shallow tank). Its tank draft and can diameter ratio is less than 1
2 Stretch deep tank (deep irrigation). The ratio of tank height to tank diameter is greater than 1
3 thin stretching tank
2, quality inspection
Technical requirements of 1 pair of tanks 2 Quality inspection methods 5. Manufacturing process of circular top open lid The top open lid is the plate that is stamped and formed with a round or profiled lid with reinforced concrete. When opening the can, it is cut with a special tool. The manufacturing process route of the circular top opening cover is:
1, cutting board
2ã€Covering the round edge
3, plastic injection and drying
Six, easy to open the lid manufacturing process
1, easy to open the cover of the classification of 1 open mouth size 2 points of the material used to connect 3 open way points
2, the performance requirements of aluminum alloy materials
3, easy to open the manufacturing process and equipment 1 pull ring easy open lid production process 2 base cover production 3 finished cover
4. Technical requirements for easy opening cover 1 Basic size inspection 2 Main performance 3 Appearance quality requirements 4 Coating quality requirements
5ã€Quality check method 1 Easy to open the lid compressive strength test 2 Easy to open the lid tightness test
Seven, determine the tank type, structure of metal cans
1, the factors that affect the cost
2, should meet the packaging requirements of internal packagings Tank capacity refers to the volume of metal cans at 20 °C, calculated to deduct tank bottom and tank lid height.
Eight, the choice of metal cans of raw materials
The material and its thickness should be determined based on the structural strength of the metal pipe. The thickness of the sheet metal used for the metal tube is approximately 0.15-0.5 mm.
1, the determination of the material thickness should be based on the structural strength of the metal cans to determine the cans
2, the calculation of material area