A blanking buffer cylinder based on damping principle
A buffer cylinder and damping cylinder technology, applied in the field of sheet metal stamping and forming, can solve the problems of heavy maintenance workload, large buffer cylinder piston diameter, short service life, etc., save external control pipes and valve groups, and shorten blanking buffer Stroke, the effect of reducing the amount of maintenance
Active Publication Date: 2019-02-22
DALIAN DESIGN INST CO LTD CHINA FIRST HEAVY IND +1
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Problems solved by technology
[0004] 1. The buffer cylinder is an ordinary piston cylinder, the buffer stroke is long, and the mold is complicated;
[0005] 2. The buffer cylinder is sealed to realize the sealing of the cylinder body. The seal bears a huge impact load, the service life is short, and the maintenance workload is heavy;
[0006] 3. The piston diameter of the buffer cylinder is large, and the volume of the buffer cylinder is large, so it cannot be used in a press with limited space
Method used
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Embodiment Construction
[0030] Such as figure 1 A blanking buffer cylinder based on the damping principle is shown, including: a buffer rod 1, an end cover 3 and a damping cylinder 4;
[0031] The damping cylinder 4 is a cylinder with an open top and a cylindrical stepped hole processed in the center;
[0032] The buffer rod 1 is a cylindrical rod with unequal diameters composed of a top telescopic section, a middle auxiliary section and a lower damping section;
[0033] Among them, the lower damping section extends into the small-diameter cylindrical hole at the bottom of the 4 stepped holes of the damping cylinder body, and is matched with the inner arm of the small-diameter cylindrical hole at the bottom of the stepped hole with a slight clearance, and the thickness of the lower damping section is smaller than the depth of the small-diameter cylindrical hole, and is in line with the small-diameter cylindrical hole. The inner wall of the hole forms an ultra-high pressure chamber A;
[0034] The u...
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The invention discloses a blanking buffer cylinder based on a damping principle. The blanking buffer cylinder comprises a buffer rod, an end cover and a damping cylinder body. The damping cylinder body is a cylinder body provided with an opening in the top and a cylindrical step hole in the center. The end cover is assembled to the upper end of the damping cylinder body. The buffer rod is an unequal-diameter cylinder rod body composed of a top telescopic segment, a middle auxiliary segment and a lower damping segment. The middle auxiliary segment and the lower damping segment extend into the step hole of the damping cylinder body and are in microclearance fit with the inner wall of the step hole. A super-high-pressure cavity is filled with oil liquid, and the middle auxiliary segment of the buffer rod is promoted to float in a large-diameter cylinder hole, namely, the large-diameter cylinder hole of the damping cylinder body step hole is divided into a lower auxiliary cavity and an upper oil cavity through the middle auxiliary segment of the buffer rod; and the auxiliary cavity is filled with oil liquid as well, a damping hole communicating the auxiliary cavity with the super-high-pressure cavity is formed in the lower damping segment, an overflow channel for communicating the auxiliary cavity with the upper oil cavity is arranged on the middle auxiliary segment, and thus the blanking buffer cylinder capable of resisting the large load impact is formed.
Description
technical field [0001] The invention relates to the field of sheet metal stamping and forming, in particular to a blanking buffer cylinder based on a damping principle. Background technique [0002] Blanking buffer is an important link in the blanking process of sheet metal stamping, and the buffering effect directly determines the life of the press and the service life of the mold. After the steel plate is pressed and formed by the mold, the material head at the necessary position needs to be cut and removed by the mold. The moment the steel plate is torn will cause the sudden loss of load of the press, which will inevitably lead to severe vibration of the fuselage and impact of the pipeline . In order to alleviate the damage caused by shock and vibration to the press, the high-end blanking press should be equipped with a buffer cylinder. The existing buffer cylinders are all piston cylinders based on conventional pressure, which cannot well meet the requirements of users...
Claims
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IPC IPC(8): F15B15/22F16F9/19F16F9/32
CPCF16F9/19F16F9/3235F16F2222/12
Inventor 郝铁文殷文齐蔡喜陈刚
Owner DALIAN DESIGN INST CO LTD CHINA FIRST HEAVY IND