Connecting rod type servo drawing pad structure

Abstract

The invention discloses a connecting rod type servo deep drawing pad structure, and mainly relates to the field of press machinery industry. Comprising an upper die and a lower die which are arranged on a pressing machine, an ejector rod is arranged on the lower die, a top crown is arranged at the bottom of the ejector rod, a fixed plate is arranged below the top crown, a power assembly for driving the top crown to move up and down is arranged on the fixed plate, and the power assembly comprises a fixed block, a movable block, a connecting rod, a rocker and a power part. The moving block is slidably connected to the fixing plate, the two ends of the connecting rod are rotationally connected with the top crown and the moving block respectively, one end of the rocker is rotationally connected to the fixing block, the other end of the rocker is rotationally connected with the connecting rod, an overload protection part is arranged on the top crown, and the connecting rod is rotationally connected with the overload protection part on the top crown. The tension pad has the beneficial effects that the load value of a transmission part and the impact on the transmission part can be effectively reduced, the service life of the tension pad is ensured, the replacement and maintenance cost is reduced, and the service life and economical efficiency of the tension pad are ensured.

Description

technical field [0001] The invention relates to the field of press machinery industry, in particular to a connecting rod type servo deep drawing pad structure. Background technique [0002] The deep drawing pad device is mainly used in the sheet metal forming process of the press, to provide the blank holding force for the blank blanking process of the sheet metal, control the flow of the material, and inhibit the wrinkling and cracking of the sheet metal. During the sheet metal forming process, it needs to provide reliable and stable And the blank holder force can be adjusted in real time according to the forming process to meet the drawing and forming requirements of the sheet metal. If the blank holder force fluctuates too much, it will cause the sheet metal to wrinkle and crack. [0003] At present, the commonly used deep drawing pads include pure gas deep drawing pads, hydraulic deep drawing pads, gas-liquid mixed deep drawing pads, and rack and pinion driven deep drawi...

AI Technical Summary

Problems solved by technology

[0003] At present, the commonly used drawing mats include pure gas drawing mats, hydraulic drawing mats, gas-liquid mixed drawing mats, and rack and pinion driven drawing mats. The blank-holding force fluctuates greatly in the middle, and the blank-holding force is not easy to control accurately, and the pure gas drawing pad needs to use gas storage tanks, cylinders, etc. to store gas, which occupies a large space and cannot meet the requirements of the precise drawing process of the sheet metal; The pressure of the hydraulic drawing pad can be set according to the process requirements during the sheet metal forming process, but the hydraulic drawing pad needs to be equipped with a large hydraulic pump station, cooling system, hydraulic pipeline, etc., which has a complex structure, a large floor space, and high energy consumption. , the oil needs to be replaced regularly, the cost is high, and the leaking oil pollutes the working environment. This device with a large area and high energy consumption is no longer suitable for the current environment and national energy consumption requirements;

[0004] The purely mechanical drawing mat has a simple transmission structure and high mechanical efficiency, but there are also obvious shortcomings. For example, the transmission mechanism of a large-tonnage mechanical drawing mat directly bears a load of several hundred tons, which has a large impact, short service life, and high replacement and maintenance costs. Extremely high, the structure of the mechanical stretch pad used in our factory needs to be improved urgently to reduce the load value borne by the transmission part, ensure the service life of the device, reduce the cost of use and the frequency of replacement

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