What Is Injection Molding Clamping Unit?
A clamping unit for an IMM is used to keep the mold shut against the forces developed when injection pressure pushes plastic into the closed mold. It includes a drive mechanism for moving a moving platen of the injection molding machine in at least one direction.
Some think there are only 2 types of clamping units for injection molding, while actually there are 3.
1.Injection Molding Toggle Type Clamping Unit:
A toggle clamping unit for an IMM includes a toggle link, a crosshead connected to the toggle link, and a driving device for driving the crosshead. People mainly use it for high speed injection molding. Due to the different angles to the toggle position has a decelerate interval before the mold touchpoint that can literally give safety to the mold. In comparing with hydraulic-clamping the oil piston of the toggle is smaller, so it can provide a more high-speed in platen moving. And the mold thick adjust is using adjusting nuts to fix the platen, the mold position will always stay at the same point unless change the position.
Clamping Unit in machines
2.Injection Molding Hydraulic Type Clamping Unit：
Advantages:
1.Ideal for producing large volume parts, highly complex parts (automotive industry), high-tech product components with perfect surfaces, or thick-walled parts
2.Good for driving core-pulling and valve sprue
3.Due to the high availability and low cost of spare parts The return on investment is faster
4.There are opportunities for better injection rates, precise injection, and high levels of process stability.
3.Magnetic Type Clamping Unit:
Clamping force generated by a magnetic module in a magnetic mold splint or platen. Plate magnetization, demagnetization, mold closing, mold change can be operated through the interface
panel.It is easy to use and operate. They give huge advantages through increased efficiency and productivity in a great number of applications even with limited handling.
