Abstract: A plate-like shape die 1 for forming a honeycomb structure provided with an introduction portion 3 having plural back holes on one side face (an introduction side) thereof and a formation portion provided with silts 6 communicating with plural back holes 7 on other side face thereof; using for forming a honeycomb shape with passing raw materials being introduced from back holes 7 of an introduction portion 3 through silts 6 being provided on the forming portion 2, wherein the introduction portion 3 is composed of two layers of a plate-like abrasion portion 5 constituting an introduction face 8, and an introduction portion main body 4 located between the abrasion portion 5 and the forming portion 2, and the abrasion portion 5 is detachably disposed on the introduction portion main body 4.

Abstract: There is provided a method for manufacturing a honeycomb structure forming die, the method includes: an introduction hole forming step for forming, in plate-shaped die substrate having one side end face and the other side end face, a plurality of introduction holes for introducing kneaded clay on the other side end face to function as a kneaded clay introduction face, and a slit forming step for forming slits communicating with the introduction holes in order to form the partition walls of the honeycomb structure by extruding the kneaded clay by performing a comb-like electro-discharge machining by a comb-like electrode 21 where a plurality of plate-shaped protrusion electrodes 23 corresponding with width of the slits are disposed on the one side end face to function as a kneaded clay formation face of the die substrate.

Abstract: There is provided a method for manufacturing a honeycomb structure forming die including a liquid groove forming step for forming linear processing liquid grooves 3 whose width is smaller than that of the slit 5, in positions for forming the slits 5 for forming the partition walls 41 of the honeycomb structure 40 by subjecting the kneaded clay to extrusion in one side end face 7 as a kneaded clay forming face 17 of a plate-shaped die substrate 2. An introduction hole forming step for forming introduction holes 4 for introducing the kneaded clay is performed before or after the liquid groove forming step. Slits 5 communicating with the introduction holes 4 are formed by performing comb-like electro-discharge machining by a comb-like electrode 21 where plate-shaped protrusion electrodes 23 corresponding with the slit 5 width are disposed in positions including the processing liquid grooves 3.

Abstract: A die for forming a honeycomb structure, comprising a platy die base member having a clay supply face on back surface thereof and including a plurality of introduction holes for introducing a mixed raw material for forming; and a clay forming face on upper surface including a plurality of slits for extrusion of the material being connected to the introduction holes and formed lattice-like partition regions; at least a part of lattice-like partition regions being provided in such a position that the extended line of at least part of a plurality of lattice-like regions overlap with the slits at edges thereof as top view, slits including inner peripheral slits formed in the inner peripheral region, and outer peripheral slits formed in the outer peripheral region surrounding the inner peripheral region and having a width-enlarged portion having a width larger than that of the inner peripheral slit, and production method thereof.

Abstract: A diel for forming the honeycomb structure includes: a plate-like die main body 4 including an introducing portion 3 provided on the side of one surface thereof and having a plurality of back holes 7 and a forming portion 2 provided on the side of the other surface thereof and having slits 6; and a back plate 5 detachably attached to the surface of the introducing portion 3 and having a plurality of through holes 9 connected to the back holes 7 of the introducing portion 3. Through hole opening portions 12 of the through holes 9 formed in the back plate 5 in the one surface of the die main body have such an enlarging shape as to enlarge toward the one surface of the die main body. The diel for forming the honeycomb structure can decrease the resistance of a forming material during extrusion.

Abstract: A plate-like shape die 1 for forming a honeycomb structure provided with an introduction portion 3 having plural back holes on one side face (an introduction side) thereof and a formation portion provided with silts 6 communicating with plural back holes 7 on other side face thereof; using for forming a honeycomb shape with passing raw materials being introduced from back holes 7 of an introduction portion 3 through silts 6 being provided on the forming portion 2, wherein the introduction portion 3 is composed of two layers of a plate-like abrasion portion 5 constituting an introduction face 8, and an introduction portion main body 4 located between the abrasion portion 5 and the forming portion 2, and the abrasion portion 5 is detachably disposed on the introduction portion main body 4.

Abstract: A process for producing a die for forming a honeycomb structure having slits having hexagonal honeycomb cell shape 5 at one of surfaces 7 of a plate-like base material for die 2, and backside holes 4 each communicating with respective slits 5 at the other surface 8, which comprises the steps of forming holes 3 for dielectric fluid each having an opening diameter smaller than the width of the slit 5 in a predetermined depth at the one of surfaces 7 thereof, and holes 4 communicating with holes 3 at the rest surface 8; and then passing a dielectric fluid 10 for electrical discharge machining from the surface 8 to the surface 7 via holes 3 and 4 until the machining proceeds to a position communicating with each hole 4; thereby, the slits 5 are formed at the surface 7 of the base material 2.

Abstract: In a connector terminal into which a cooperating male contact terminal can be smoothly inserted and a movable contact strip can be prevented from being buckled while a desired contact pressure can be attained, a connecting portion 11 is formed into a substantially box shape by folding a bottom plate 13, side plates 14, 15 (14 is not shown) continuously extending from respective sides of the bottom plate and a top plate 16 continuously extending from one of the side plates. A movable contact strip 17 is formed by folding back the top plate 16 around a gently curved portion 17a into a resilient spring having an inverted triangular shape including a contact portion 17b near an inwardly bent middle portion of the movable contact strip 17. A hole 17c is formed at an end portion of the movable contact strip 17 into which an engagement tip 16b formed by folding a part of the top plate 16 inwardly is inserted.

Abstract: A process for producing a die for forming a honeycomb structure having slits having hexagonal honeycomb cell shape 5 at one of surfaces 7 of a plate-like base material for die 2, and backside holes 4 each communicating with respective slits 5 at the other surface 8, which comprises the steps of forming holes 3 for dielectric fluid each having an opening diameter smaller than the width of the slit 5 in a predetermined depth at the one of surfaces 7 thereof, and holes 4 communicating with holes 3 at the rest surface 8; and then passing a dielectric fluid 10 for electrical discharge machining from the surface 8 to the surface 7 via holes 3 and 4 until the machining proceeds to a position communicating with each hole 4; thereby, the slits 5 are formed at the surface 7 of the base material 2.

Abstract: In a connector terminal into which a cooperating male contact terminal can be smoothly inserted and a movable contact strip can be prevented from being buckled while a desired contact pressure can be attained, a connecting portion 11 is formed into a substantially box shape by folding a bottom plate 13, side plates 14, 15 (14 is not shown) continuously extending from respective sides of the bottom plate and a top plate 16 continuously extending from one of the side plates. A movable contact strip 17 is formed by folding back the top plate 16 around a gently curved portion 17a into a resilient spring having an inverted triangular shape including a contact portion 17b near an inwardly bent middle portion of the movable contact strip 17. A hole 17c is formed at an end portion of the movable contact strip 17 into which an engagement tip 16b formed by folding a part of the top plate 16 inwardly is inserted.