Tightening of limit switch bolts for vacuum forming machines

Tightening of limit switch bolts for vacuum forming machines

 

Tightening of limit switch bolts. In order to ensure the reliability of the vertical injection molding machine, the bolts or screws of the limit switch should be tightened at least once a week. Often limit switches are subject to frequent bumps during operation, which may cause bolts to loosen or fall.

Thread fastening of molds and moving parts of vacuum forming machines

 

All critical threaded connections should be retightened at least once a week. For general threaded connections, it should be tightened at any time if it is found to be loose.

Utilization of Section Pressure Holding and Multi-stage Shooting Rate in Vertical Injection Molding Machine of Vacuum Forming Machine

 

(1) Generally speaking, without affecting the appearance, the injection should be carried out at a high speed, but it should be carried out at a lower speed before switching between gates and pressure holding;

 

(2) The holding pressure should be gradually decreased to avoid too high residual stress in the molded product and easy deformation of the molded product.

Correction of Plasticizing Parameters of Vertical Injection Molding Machine of Vacuum Forming Machine

 

 

 

(1) Confirm whether the back pressure needs to be adjusted;

 

(2) Adjust the screw speed so that the metering time is slightly shorter than the cooling time;

 

(3) To confirm whether the measurement time is stable, you can try to adjust the temperature gradient of the heating ring.

 

(4) Confirm whether the nozzle has dripping material, whether there is pig tail or sticking in the main channel, and whether the finished product has air marks, etc., and appropriately adjust the temperature of the nozzle or the loosening distance.

The correction of the cooling time of the vertical injection molding machine of the vacuum molding machine and the gradual reduction of the cooling time

 

(1) The molded product will not be whitened, cracked or deformed when it is ejected, clipped, trimmed, and packaged.

 

(2) The mold temperature can be balanced and stable. A simple algorithm for the cooling time of products with a meat thickness of 4mm or more:

 

1) Theoretical cooling time=S(1+2S)…….The mold temperature is below 60 degrees.

 

2) Theoretical cooling time = 1.3S (1+2S) ....... the mold is more than 60 degrees [S represents the maximum thickness of the molded product].

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