How to install moulds?
(1) before the mold installation, the preparation work shall be carried out to check and verify the mold before installing a new set of moulds on the injection molding machine template.
To verify whether the material volume of mold molded products matches the injection volume (volume) of the injection molding machine.
The formula for calculating the melt volume of mold forming products is as follows.
V = nViVj
V -- the volume of the melt material is required for the molding of a product;
Vi -- a mold cavity volume;
Vj - a casting system and the required volume of the flying side;
N -- number of cavity.
The relationship between the melt volume (volume) and injection molding machine (volume) of the molding tool is V less than 0.8vmax. In the formula, Vmax is the theoretical injection volume of the injection molding machine.
To verify and verify that the mold process requires the maximum force relationship between the mould force and the injection molding machine.Note that the mold process requires that the mold force should be less than the maximum force of the injection molding machine, namely F1 is less than 0.9fmax.
F1 < aPAX10-3
F1 in formula -- injection products need to be combined with mold, t;
A - safety factor, generally a=1~1.2;
P -- mean cavity pressure, MPa;
A -- the projected area of mold parting surface, cm2.
Whether the total thickness (height) of the mold is matched with the length range of the template.Shall ensure that
L p H1H2 + H3
Type H1 - twice the height of the moving mold;
H2 -- the length value is 5~l0mm;
H3 - fixed mold height, mm.
How to install moulds?
Check and check the product launch pad position in mold and injection molding system, whether the size is matched and can be coordinated.
Whether the size of the rod spacing of the injection molding machine is larger than that of the shape mold, the thread hole arrangement on the template is suitable for the concrete installation of the mold.
To check whether the arc radius of the front end of the nozzle is closely matched with the arc of the material inlet of the mold.
The positioning sleeve of the test template is matched with the mold positioning device.After the assembly of the two parts, it is possible to ensure that the nozzle hole is coincident with the center line of the inlet liner of the melting material.
(2) mold installation
To clean the assembly of the template and mold.
Adjust the operation button of the injection molding machine to adjust position.
To cut off the injection molding machine operation power supply.
To check whether the clamping plate is fastening and fastening for mold closing.
The specific peripheral auxiliary parts (valve, switch, oil nozzle) of the inspection and test mode are complete and can work normally.
To install the mould crane.If the tonnage of the hoisting device is not enough, the mould can be separately hoisted and installed.When two parts are installed and fixed, the guide column and guide sleeve shall be used to adjust the installation reference.
The positioning of the mold shall be determined according to the position between the template thread hole and the mold, and the fastening mould can be used with the screw, and the compression plate can be used in combination with the screw.Each fastening point distribution should be reasonable, the fastening force of each screw should be even.For the concrete fastening of large models, attention should be paid to the mold, which should be coordinated and coordinated with the bearing capacity of the concrete supporting device.