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In its simplest form, a stock s may be a pin or small block against hich an edge of the previously blanked opening is pushed after each stroke of the press. With sufficient clearance in the stock channel, the stock is momentarily lifted by its clinging to the punch, and is thus released from the s. Figure 9-6 shos an adjustable type of solid block s hich can be moved along a support bar in increments up to 1 to allo various stock lengths to be cut off.A starting s, used to position stock as it is initially fed to a die, is shon in figure 9-7,Vie a. Mounted on the stripper plate, the s incorporates a latch hich is pushed inard by the operator until its shoulder 1 contacts the stripper plate. The latch is held in to engage the edge the ining stock, the first die operation is pleted, and the latch is released.The starting s shon at Vie b, mounted beteen the die shoe and die block, upardly actuates a s plunger to initially position the ining stock. Compression springs return the manually operated lever after the first die operation is pleted.Trigger ss incorporate pivoted latches (Figure 9-8, Vie a and Vie b). These latches are moved out of the blanked-out stock area by actuating pins 2. On the ascent of the ram, springs 3 control the lateral movement of the latch (equal to the side relief), hich rides on the surface of the advancing stock and drops into the blanked area to rest against the cut edge of the cut-out area.In its simplest form, a stock s may be a pin or small block against hich an edge of the previously blanked opening is pushed after each stroke of the press. With sufficient clearance in the stock channel, the stock is momentarily lifted by its clinging to the punch, and is thus released from the s. Figure 9-6 shos an adjustable type of solid block s hich can be moved along a support bar in increments up to 1 to allo various stock lengths to be cut off.A starting s, used to position stock as it is initially fed to a die, is shon in figure 9-7,Vie a. Mounted on the stripper plate, the s incorporates a latch hich is pushed inard by the operator until its shoulder 1 contacts the stripper plate. The latch is held in to engage the edge the ining stock, the first die operation is pleted, and the latch is released.The starting s shon at Vie b, mounted beteen the die shoe and die block, upardly actuates a s plunger to initially position the ining stock. Compression springs return the manually operated lever after the first die operation is pleted.Trigger ss incorporate pivoted latches (Figure 9-8, Vie a and Vie b). These latches are moved out of the blanked-out stock area by actuating pins 2. On the ascent of the ram, springs 3 control the lateral movement of the latch (equal to the side relief), hich rides on the surface of the advancing stock and drops into the blanked area to rest against the cut edge of the cut-out area.×Ô¶¯¼ì²âÖÐÓ¢ÎÄÖÐÒëÓ¢Ó¢ÒëÖаٶȷÒë.
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