Processing method of lower base plate of vehicle seat back
A technology of a car seat and a processing method, which is applied to the processing field of the lower bottom plate of the car seat back, can solve the problems of easy deformation of the rounded edge, insufficient strength of the rounded edge, variation of welding tolerance, etc., so as to ensure product quality and reduce Processing cost, effect of reducing deformation
Inactive Publication Date: 2011-04-27
SHANGHAI KOAL AUTO METAL PRODS
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Problems solved by technology
However, the processing process of the lower floor of the automobile seat back in the prior art includes cutting, preforming, trimming and punching, forming a U shape as a whole, side punching, rolling, shaping, punching and turning holes, profiling, and punching. and connecting forming steps. This method adopts the process of welding the rounded edge and the body during the connection and forming. The disadvantage is that the rounded edge is prone to deformation during welding and the strength of the rounded edge is not enough; in addition, because the welding surface is easy to Oxidation and welding tolerance variation, which can lead to quality defects and affect the life of the product
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[0010] Cooperate see figure 1 , figure 2 , the processing method of the bottom plate of the car seat back of the present invention is, at first the plate raw material is cut into a material plate of a set size with a shearing machine. Then put the above-mentioned material sheet into the preforming mold, and use a hydraulic press to punch out the core structural shape of the lower bottom plate in the middle of the material sheet. Then put the above-mentioned preformed plate into the trimming and punching die, cut out the peripheral shape with a press and punch out 9 installation connection holes at the set position, and cut out two protruding connection pieces on one side. In the trimming and punching step, ensure 9 hole positions and hole distance dimensions (3-Φ6.5 +0.2 +0.1 ) technical requirements to meet the hole edge burr ≤ 0.2mm. Then put the rounded edge of the material plate that has been trimmed and punched into a U-shaped mold, and press the rounded edge into a ...
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The invention discloses a processing method of a lower base plate of a vehicle seat back. The processing method comprises the steps of cutting material, pre-molding, trimming and punching, coiling a circular edge into the U shape, molding a U-shaped whole body, side punching, coiling a circle, reshaping, punching a flanging hole, profiling, punching and squeezing a rivet for connecting and molding, wherein the step of coiling the circular edge into the U shape is that the coiled circular edge of the trimmed and punched material plate is pressed into a plurality of U-shaped interphase corrugated shapes; and the step of the squeezing the rivet for connecting and molding is that the material plate obtained after the last step is used for the rivet squeezing and connection with the corrugatedcoiled circular edges by a special rivet squeezing tool. The processing method of the invention increases the material strength of the coiled circular edge due to the step of coiling the circular edge into the U shape and avoids the quality defect caused by easy oxidization of welded surfaces and welding variation of tolerance due to the step of squeezing the rivet for connecting and molding, thereby increasing the strength, reducing the deformation and prolonging the service life of a product.
Description
technical field [0001] The invention relates to a manufacturing method of an automobile seat part, in particular to a processing method for a lower bottom plate of an automobile seat backrest. Background technique [0002] The car seat is composed of an internal frame and an external cladding layer. Its comfort, firmness and service life mainly depend on the structure of the internal frame, including the structure and connection relationship of the components that make up the internal frame. Wherein, the bottom plate of the car seat back is a horizontal plate arranged on the lower part of the seat back, which plays a role in supporting the force of the lower part of the seat and transmitting the active force of the backrest adjustment shaft. Due to the above reasons, plus the vibration and shaking generated by the car during driving, it is required that the bottom plate of the car seat back has a higher compressive and tensile strength. However, the processing process of th...
Claims
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IPC IPC(8): B23P15/00
Inventor 陆海天董伟国黄振东胡群力王静陈丽萍张淑琴
Owner SHANGHAI KOAL AUTO METAL PRODS