MultiPierce Bulk-Feed Design Info

Operation

Bulk Pierce Nuts are fed into a Multipierce or Multimatic Head through plastic nut guide from a gravity or power feed device. Constant pressure from the feeder, transmitted through the nuts, keeps a nut under the plunger when in the "open" or "ready" position. The press, when lowered, forces the plunger to drive the nut into the part, supported by a die button. The die button forms the part material into and around the Pierce Nut undercuts and/or clinches the nut corners, securing the nut in position.

Die Design Information

Multipierce and Multimatic Bulk Feed Heads are designed into a die in the same manner as Multipierce and Multimatic Reel-Feed Heads; same access requirements exist. Refer to Multipierce and Multimatic sections for Head mounting dimensions.

HI Series Pierce Nut - HI Stress Pierce Nut
Ext		Shut Height		Open Height		Stroke		A
MM	In	MM	In	MM	In	MM	In	MM	In

12.7	0.50	132.7	5.225	161.9	6.375	29.2	1.15	25.4	1.00

38.1	1.50	158.1	6.225	212.7	8.375	54.6	2.15	50.8	2.00

57.2	2.25	177.2	6.975	250.8	9.875	73.7	2.90	69.9	2.75

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