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Characteristics of mask machine accessories

Release time: 2021-01-26

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Characteristics of mask machine accessories

1. Wear resistance, when the blank is plastically deformed in the cavity of the mask machine parts, it flows and slides along the surface of the cavity, causing friction between the surface of the cavity and the blank, which causes the mask machine parts to fail due to wear. Therefore, the wear resistance of the material is one of the basic and important properties of the mask machine accessories.

2. Strong, the working conditions of the mold are mostly very bad, and some often bear resisting impact load, which leads to brittle fracture. In order to prevent sudden brittle fracture of mold parts during work, the mold must have higher strength and added value.

mask machine accessories

3. Fatigue fracture performance, in the working process of mask machine parts, under the long-term action of cyclic stress, fatigue fracture is often caused. Its forms include low-energy multiple impact fatigue fracture, tensile fatigue fracture, contact fatigue fracture, and bending fatigue fracture.

4. High temperature performance. When the working temperature of the mold is higher, the size and strength will decrease, leading to early wear of the mold or plastic deformation and failure. Therefore, the mold material should have high anti-tempering stability, so that the mold has high hardness and strength at the working temperature.

5. Heat and cold fatigue resistance. Some molds are often heated and cooled repeatedly during the working process, which causes the surface of the cavity to be stretched and the pressure changes to stress, causing surface cracks and peeling, increasing friction, compressing plastic deformation, and reducing Improved dimensional accuracy, which led to mold failure.

mask machine accessories

6. Corrosion resistance. When some molds such as plastic molds are working, due to the presence of elements such as chlorine and fluorine in the plastic, strong corrosive gases such as hci and hf will be resolved after heating, which will erode the mold cavity surface and increase its surface roughness. Exacerbate wear failure.

Existing mask machine accessories generally include a clamping mold and a concave mold. One end of the concave mold is connected with a press or a cylinder, and the other end is provided with a cavity 101 containing the head of the steel shell. The bottom of the cavity 101 is connected with the steel shell head.

The contact surface is arc surface 102. When sealing, a fixed mold is composed of a steel shell fixed by a clamping die (clamped at the rolling groove of the steel shell), and a concave mold driven by a press or a cylinder is a movable mold. The center of the steel shell is the same as the center of the cavity 101 On the axis; under the action of a press or a cylinder, the die moves to the right, and the head of the steel shell is incorporated into the cavity 101, and the head of the steel shell is pressed and bent inward along the arc surface 102 to complete the sealing.

mask machine accessories

Because the steel shells of many existing cylindrical lithium batteries are often "two-stage", the lower part of the side wall of the steel shell is thinner to increase the battery capacity, while the side wall of the upper part is thicker to seal To avoid leakage during subsequent processing or use. When the above-mentioned mask machine parts are used for sealing, the two steps of fixing the steel shell head in the mold cavity and calendering deformation are carried out almost at the same time, and there is no delay in the middle. Mouth, or wrinkles are generated at the joints of the steel shell or on the thinner part of the side wall, causing the battery to be scrapped.

For more information about mask machine accessories, welcome to consult Strong H Machinery Technology Co., Ltd.