Drawing process and drawing production line
A production line and process technology, applied in the field of food-grade stainless steel product drawing process and drawing production line, can solve the problems of easy cracking of the bottom and R angle, complicated processing technology, insufficient drawing depth, etc., and achieve low cost and flexible delivery. , the effect of high processing efficiency
Active Publication Date: 2016-06-01
山东胜宁电器有限公司
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Problems solved by technology
This method solves the problems of insufficient drawing depth and easy cracking of the bottom and R corners in the stainless steel drawing process, but the annealing heat treatment that must be carried out after each drawing in the processed semi-finished product makes the processing cost high and the processing process complicated
Method used
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[0024] The specific implementation manners of the present invention will be described below in conjunction with the accompanying drawings. The invention discloses a stretching process, which is used to stretch a thin sheet made of food-grade stainless steel into a deep-groove bottom cover of a soybean milk machine. In order to meet the stretching requirements, the stretching process includes more than six passes by The stretching deformation completed by the hydraulic press, the raw material used before stretching in this embodiment is 304 stainless steel plate, the thickness of the stainless steel plate circular plate is 0.41mm, the diameter is 237mm, the total height of the lower cover after stretching is 156mm, and the diameter of the cylindrical port part Ⅷ It is 124mm-125mm, and the height of the cylindrical port part Ⅷ is 28m. The specific tensile parameters are set as:
[0025] 1) The stretching time of the first pass is 6.6 seconds, and the stretching pressure is 0.5MP...
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Abstract
The invention discloses a drawing process and a drawing production line. The process is used for producing deep-groove-type lower covers of soybean milk machines by drawing food grade stainless steel sheets. The drawing process includes six or more passes of drawing deformation completed by an oil press. According to the lower cover drawing process disclosed by the invention, optimum matching of parameters of all the eight passes of drawing is achieved, and the quality of a drawn product is guaranteed. Secondly, the production line is provided with a feeder, and thus automatic feeding of raw materials can be completed, and processed workpieces are collected by a box body; fetching and delivering with a multi-dimensional moving manipulator are flexible, and transfer and handover of semi-finished products between different stations can be completed automatically; and the production line realizes assembly line automatic processing of fetching, oiling, drawing, transfer and final forming of the workpieces, has the advantages of being high in processing efficiency, good in quality and low in cost, and is suitable for processing a large number of workpieces such as the lower covers of the soybean milk machines.
Description
technical field [0001] The invention relates to the technical field of metal stretching, in particular to a food-grade stainless steel product stretching process and a stretching production line. Background technique [0002] Due to the frequent exposure to acid and alkali in the food production process, and stainless steel has good acid and alkali resistance, food processing machinery needs to use food-grade stainless steel that meets the national standards. [0003] As common household kitchen utensils, the lower covers of soybean milk machines and electric kettles are made of food-grade stainless steel, and the lower covers are processed by stretching stainless steel sheets. In the prior art, the stretching is done by one-time stretching by a hydraulic machine, and the cup body processed by this has the disadvantages of poor thickness uniformity, many surface cracks, low forming rate and qualified rate. [0004] The invention patent with the application number 2010101434...
Claims
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Login to View More IPC IPC(8): B21D22/20B21D43/11
CPCB21D22/20B21D43/105B21D43/11
Inventor 王云岗董禄友陈志磊
Owner 山东胜宁电器有限公司