Design and analysis of stamping die for the hottes

2022-09-19
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Design and analysis of stamping die for belt conveyor

many stamping parts are used in the production of various parts of belt conveyor, so the quality of stamping die has a great impact on the production of belt conveyor. Most of the stamping parts commonly used for belt conveyors do not have very high accuracy requirements. The thickness is 1 to avoid rust -16mm, and the versatility is very high. When designing stamping dies, we should mainly consider improving production efficiency, reducing costs and ensuring quality. On this premise, we analyzed the design of the mold

1 checking calculation of die strength

the strength condition for the die to complete blanking is that the maximum compressive stress it bears is not satisfactory σ Max does not exceed the allowable compressive stress of the die material[ σ], That is,

2 composite mold and progressive mold fixed by epoxy resin

some enterprises rarely use composite mold and progressive mold, mainly because of the difficulty of mold processing. Caiwanhua chemical plans to fix the guide sleeve and upper die or lower die with epoxy resin in 2025, which greatly simplifies the processing of the template, reduces the manufacturing cost of composite die and progressive die, and creates strong conditions for mass production of stamping parts. The following introduces the dies of common stamping parts in belt conveyor

(1) the double long hole part shown in Figure 1 is a common part in belt conveyor. The original process is punched twice, which has low efficiency and large center distance error. Use the compound die as shown in Figure 2, and punch two holes at the same time, which ensures the center distance and improves the production efficiency

(2) the connecting plate shown in Figure 3 can use the progressive die and the leaky plate, and use the positioning nail to make the step distance. In the first process, punch the 2 holes of the first piece and align the edges. In the following processes, the positioning nail is used for positioning, and the punching of the previous piece is completed, and the 2 holes of the next piece are punched, as shown in the figure

(3) the support plate shown in Fig. 7 can also be punched with a progressive die. Refer to Fig. 8. Use positioning nails to punch according to each process. First, align the edges and punch out the openings of the first two parts, then use the opening of the second part to position the first part and punch out the openings of the next two parts, and then use the opening of the fourth part to position the second part and the third part and punch out the openings of the next two parts. From this process, two parts are punched each time

3 the blanking force of the die should be reduced as much as possible

(1) the blanking force can be reduced by using the inclined blade female die. This method can be used to reduce the blanking force for the side pillar and middle pillar in the idler beam of the belt conveyor

(2) for sheet metal stamping parts with basically symmetrical shape and low accuracy requirements, the straight edge of its contour line can be cut on the shear machine, leaving symmetrical folds until there are 5 (8) mm time lines and curves exposed in front of the machine head for blanking, which can reduce the length of the blanking periphery and reduce the blanking force. (end)

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