Self-adaptive gas check for die pad on punching machine
An airtight device and self-adaptive technology, applied in the direction of stamping machines, presses, manufacturing tools, etc., can solve problems such as air bag leakage, minor faults and major repairs, and easy loosening of screws, etc., to achieve convenient installation, simple maintenance, and avoid The effect of loosening and shifting
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[0016] The present invention will be described in further detail below in conjunction with the embodiments of the drawings.
[0017] As shown in the figure, an adaptive air-tight device for die pads on a punch includes a fixing seat 1, a piston 2, a retaining ring 3, and a sealing ring 6. The lower end of the fixing seat 1 is sealed and fixedly connected with the air bag or the cylinder block 4, The fixed seat 1 is provided with a first air passage 11, the piston 2 is arranged in the fixed seat 1 and is in a sealed sliding fit with the fixed seat 1, the retaining ring 3 is sleeved on the piston 2 and is fixedly connected to the fixed seat 1, and the inner part of the retaining ring 3 The surface is integrally provided with a first positioning step 31, and the outer surface of the piston 2 is integrally provided with a second positioning step 21. The first positioning step 31 abuts the second positioning step 21 to prevent the piston 2 from sliding out of the fixing seat 1. The lo...
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