German molla spring molla model molla price

molla springs are elastic elements with multiple peaks and valleys on a thin metal ring. They are typically used in applications with low loads and deformation, where low spring stiffness and axial preload are required. Wave springs are particularly suitable for weight-sensitive applications and those constrained by limited installation space. Typical application areas include aerospace, precision machinery, hydraulic sealing, and high-end motors. They are thin, ring-shaped elastic metal components composed of multiple peaks and valleys. The product uses high-quality spring steel 65Mn (60Si2MnA/50CrVA /0Cr17Ni7Al /SUS304), heat-treated using specific methods. Depending on the specific conditions, hardness is generally controlled between HRC44 and 55. The surface is blackened, providing good elasticity. Wave springs are widely used in motors, textile machinery, hydraulic equipment, automotive, and other industries. They are mainly installed in bearing housings or bores suitable for their nominal dimensions. They require minimal installation space and offer special functions such as noise reduction and vibration damping.

molla spring applications

Extension springs, also known as helical extension springs, generally have uniform pitch and circular cross-sections. They can be used in many occasions, such as production assembly, testing, R&D, and maintenance. Extension springs hold an important position in the global market and are widely used in national defense, marine, computer, electronics, automotive, mold, medical, biochemical, aerospace, railway, nuclear power, wind power, thermal power, construction machinery, mining machinery, building machinery, elevators, and other fields.

molla spring selection

A. Selection of spring force: Select the quantity, model, and spring force of each gas spring based on the calculated punching force. Generally, the spring force of the gas spring should be selected by adding an increment of 15% to 20% to the calculated punching force, which better reflects actual conditions. First, after mold wear, changes in clearance occur. Changes in process parameters such as blunt cutting edges, inconsistencies in mold thickness and sheet metal deformation resistance, will cause changes in workpiece deformation resistance, so allowance should be made for deformation resistance in the design. Second, during charging of the gas spring, high-pressure gas inevitably experiences throttling losses, causing a slight decrease in spring force. Third, gas springs have a long service life; after a period of use, there will be certain leakage of high-pressure nitrogen, resulting in a slight drop in spring force. B. Selection of the number of gas springs: Based on alignment requirements, combined with the mold structure and the position of force application points, ensure that no eccentric loading occurs during mold operation, while also facilitating mold adjustment. This ensures sufficient service life for the gas springs during use. C. Selection of the boost ratio for gas springs: The boost ratio can be selected based on the gas spring characteristic curve and stamping process requirements to determine the gas spring model. Determining the boost ratio is particularly important when stable force change, basically constant working force, or large initial force is required. D. Selection of gas spring stroke: Regardless of the process, when selecting a gas spring, it is preferred that the total height of the gas spring is not too high to avoid instability and overly complex structures during mold installation. Moreover, the larger the stroke, the higher the price of the gas spring, which is especially important for independent gas springs. If a large stroke is indeed required due to process needs, it is recommended to adopt a gas spring seat plate system, which can reduce mold height and improve the stability and reliability of the gas spring. Sometimes, for safety and to avoid accidents, when selecting a gas spring, a safety stroke of 3-5mm needs to be increased. Selection of gas spring structural form: When designers use gas springs in molds, they first need to decide on the structural form. Comprehensive consideration should be given to the stamping process requirements of the required parts, the mold structure, equipment used, working environment, working conditions, mold cost, and adjustment and maintenance factors. A. Independent type: The most widely used is the independent gas spring, which occupies less mold space, is securely placed, and has various structural forms. Several different installation forms do not require any accessories and can be used directly by placing them in the mold. It is the preferred design form for designers today. B. Pipeline connection type: Pipeline connection types are generally applied to large stamping parts and large coverings. It uses high-pressure pipes to connect individual gas springs together, and installs a control instrument to equalize the spring force of each gas spring in the entire system, thereby integrating the entire system into one, equivalent to an independent gas spring. Thus, a larger spring force and balance of spring force transmission are achieved, improving mold life and ensuring the quality of stamped parts.

molla spring uses

1) For blacksmiths: Because leaf springs are made of higher quality steel, they are a favorite material for blacksmiths. In countries such as Nepal, Bangladesh, the Philippines, and Pakistan, where traditional blacksmiths still produce a large number of tools, leaf springs from scrapped cars are often used to make tools such as knives. 2) Used in trampolines: Leaf springs have also replaced traditional coil springs in some trampolines (known as soft-edge trampolines), which improves user safety and reduces the risk of concussion. Leaf springs are spaced around the frame "legs", branching from the base frame to suspend the jumping mat, thereby providing elasticity. 3) Used in clutches: The common "diaphragm" in automotive clutches is a type of leaf spring.

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