Mold and method for pressing incision of product with inner necking

Abstract

The invention discloses a stamping mould for an incision of an inner contraction mouth product and a stamping method. The stamping mould comprises an upper die carrier 2, an upper die 3 fixed with the upper die carrier 2, a punching head 22 fixed with the upper carrier 3, a lower die carrier 11 and a lower die 9 fixed with the lower die carrier 11; and a clamping mechanism and a positioning mechanism are arranged on the lower die 9. The mould can adopt a punch press to carry out machining and is convenient to clamp. The stamping adopts a two-step stamping method: step one, a bending part of a machined product 1 is downwards and is put in a die head 5; the product 1 is fixed through a movable positioning plate 18 and a fixed positioning plate 19; a first incision is stamped; step two, the product 1 is loosened through the movable positioning plate 18 and the fixed positioning plate 19; the product 1 with the first stamped incision horizontally rotates for 180 degrees; the product 1 is fixed through the movable positioning plate 18 and the fixed positioning plate 19; and a second incision is stamped. The method has rapid machining speed and high economic benefit.

Description

technical field [0001] The invention relates to the field of stamping manufacturing, in particular to a stamping die and a stamping method for incisions of inner-neck products. Background technique [0002] At present, general shrinkage products such as figure 1 , figure 2 A hollow cylindrical product 1 is shown, the top of which is bent inwards to form a hollow body inside. There are two symmetrical slits 101 and 102 in the radial direction at the bend of the top, the distance between the two slits is greater than the diameter of the curved inner peripheral surface of the top and smaller than the inner diameter of the product cavity, and the bottom of the product 1 is also provided There is a through hole 103. When the above-mentioned inner necking product 1 is processed, it is generally first formed by a punch press, shrinking the edge, and then machining two incisions. [0003] Since the top of the product with the inner neck is bent inward, an object with a small ope...

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Problems solved by technology

[0003] Since the top of the product with the inner neck is bent inward, an object with a small opening and a large inner cavity is formed, but the lower mold of the stamping die of the prior art is flat as a whole, and it is impossible to clamp and position the product on the lower mold, so the incision Unable to perform stamping

[0004] However, the method of processing two slits with a slotting machine uses the vertical reciprocating motion of the slotting knife to slit the slits, and the amount of cutting each time is only tens of microns, so the processing speed is slow and the economic benefit is poor.

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