Disassembly and installation of components on the hydraulic pump manifold, such as directional valves, cartridge valves, tubular, plate, stacked, embedded and a variety of other structures, different principles of use, there are different precautions, today we will talk about our experience in the installation and maintenance of injection moulding machines, I hope to be useful to you.
Maintenance:Let’s start with the experience of the repair, which will be more helpful to most of you.
General approach: Before dismantling, first understand the role of this component and ensure there is no internal pressure. If trapped pressure exists, such as in nitrogen cylinders where it can be very high, similar phenomena may occur in other parts. It is generally advisable to gently loosen bolts gradually to allow the component to release pressure slowly and eliminate the possibility of trapped pressure. Secondly, if you don’t understand the structure, pay attention to take pictures or draw a line to mark, so as not to forget how to recover after dismantling, dismantle not all the bolts completely detached at one time, retain a bolt positioning or change the positioning of long bolts, such as oil pumps or motors, components, generally need to pay attention to avoid making mistakes and causing greater losses.
Installation or design of new parts: generally more helpful when replacing or re-selecting, designing.
When selecting the model, understand clearly the parameters and use of the product. The factory has quality checked and performance tested components, and they have sealed the oil ports with plastic plugs for dust-free sealing. They have enclosed a certain number of spare parts in plastic bags for shipment.Before use, should check whether the certificate of conformity, instructions and spare parts are complete, and check whether there is poor packaging, damage or foreign objects, whether the oil port is open. If there is any abnormality, you can return it, or it is better to clean it with paraffin once before installation. If there is no abnormality, it is better to clean it with air hose as well.
General components have to do anti-dull anti-fault device, the installation should also pay attention to:Do not connect each oil port incorrectly (typically, each oil port on components is marked with text or codes); When installing motorized control valves, pay attention to the stroke of the cam or tappet block and the distance between the valves to prevent collisions during the test run; flange mounted connecting elements, the connecting screw should be screwed appropriately, screwed too tightly instead of sealing the seal is bad; some of the mesh type has been Opened to facilitate the manufacture and installation of holes, after the installation should be useless to plug the rotor pump; after installation, a variety of components of the spare sealing trap should be kept in case of maintenance to replace the use of.
New installation of hydraulic pump manifold components must also pay attention to the following points: should be carried out in the dust-free workshop, but many times the conditions can not reach the dust-free state, often the first drying, drying after the installation can control a certain amount of pollution.
1、Before installation, carefully inspect the unsealed hydraulic pump manifold parts for conformity certificates and review the manual. Conduct a visual inspection; if there are signs of chipping or cracking, address them promptly to prevent potential failures or malfunctions during use. If necessary, calibrate the pressure and seals for accuracy.
2、Confirm the installation direction, figure out the valve inlet and return port orientation.
3、When installing valves without specific provisions for position, place them in accessible and maintenance-friendly locations. Pay attention to venting for general control components; aim to install them below the cylinder position to prevent trapped air from affecting control accuracy. Install directional control valves horizontally.
4、use a reasonable torque to fix the valve, too loose or too tight will cause oil leakage sealing bad.
5、some of the valve plate in the processing will be some excess process holes, pay attention to plug.
6、sometimes can not buy the original valve replacement, be sure to check the interchangeability of different brands in order to replace, if it is really not possible, then increase the number one flow rate to choose to use.
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