What are the functions of needle arrangement and the temperature requirements during production and processing


Pin arrangement is a type of connector, English name: Pin Header. This type of connector is widely used in PCB circuit boards in electronics, appliances, and instruments, earning the nickname of a universal connector. Generally, it is paired with connectors such as busbar and wire end. Its function is to serve as a bridge between blocked or isolated circuits within the circuit, responsible for the task of current or signal transmission. Usually used in conjunction with busbar to form a board to board connection; Or used in conjunction with electronic wiring harness terminals to form a board to line connection; It can also be used independently for board to board connections.

During the production process of row pin connectors, various problems may be encountered, such as the possibility of excessive temperature during injection molding. Do you know the impact of excessive temperature during injection molding on row pin connectors? In the following text, Changjiang Connectors engineers will focus on introducing the impact of excessive temperature during injection molding on row pin connectors.

Generally speaking, the impact of high temperature during injection molding of pin connectors is mainly manifested in four aspects, as follows:

1. Deformation of rubber seals: In actual testing, it was found that excessive temperature rise in injection molding machines can cause deformation of rubber seals, accelerate aging and failure, reduce sealing performance and service life, and cause leakage.

2. Causing mechanical thermal deformation: The moving components with different thermal expansion coefficients in hydraulic components become stuck due to the reduced fit clearance, causing action failure, affecting the transmission accuracy of the hydraulic system, and resulting in poor working quality of the components.

3. Accelerated oil oxidation and deterioration: Excessive temperature rise in injection molding machines can accelerate oil oxidation and deterioration, precipitate asphalt substances, and reduce the service life of hydraulic oil. The precipitate blocks the damping small hole and gap valve port, causing the pressure valve to become stuck and unable to move, the metal pipeline to stretch and bend, and even break.

4. Reduce the viscosity of the oil: Excessive temperature rise in the injection molding machine will lead to a decrease in the viscosity of the oil, an increase in leakage, and a significant decrease in the volumetric efficiency of the pump and the efficiency of the entire system. Due to the decrease in oil viscosity, the oil film of moving components such as slide valves becomes thinner and cut, resulting in increased frictional resistance and increased wear.

With the intensification of competition in the row pin connector market, some manufacturers are now reducing costs by electroplating (imitating gold) and materials (such as green clad steel, alloy, etc.), but also reducing the product's usage characteristics and lifespan.

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