CN2340531Y

CN2340531Y - Rotary mould

Info

Publication number: CN2340531Y
Application number: CN 98240490
Authority: CN
Inventors: 刘德聚; 刘瑛
Original assignee: Individual
Current assignee: Individual
Priority date: 1998-09-01
Filing date: 1998-09-01
Publication date: 1999-09-29
Anticipated expiration: 2008-09-01

Abstract

The utility model relates to a rotary mould. The utility model is characterized in that four revolution surfaces which are composed of a circular ring surface, an inverted conical surface, a cylindrical surface and a conical surface are manufactured on the central hole surface of a mould core. 1-12 convex spiral ribs are uniformly distributed on the inverted conical surface and the cylindrical surface. Because the working condition of the mold is rotary, and the mold is rotated, drawn and formed once, the tensile strength and bondability and other physical properties various metal processed and alloy are increased The utility model is widely used for building structures with high standard and requirement, high intensity and large span and members.

Description

Rotary die

The utility model belongs to B21C class technology, particularly relates to the rotary die of cold drawing metal material usefulness carbide alloy in a kind of cold working.

In the known technology, be used for the metal processed mould, need roller mold to process as spiral, and for example plain steel-bar needs the hand-drawn wire mould to process, the indentation steel need one group of ragged roll mould to process for another example, they exist jointly deficiency be its goods when being used for key areas for its bond stress and the bad assurance of tensile strength.Also exist the wear-resistant degree of mould itself very poor after needing one group of ragged roll mould to process for the indentation steel in addition, perhaps the deficiency that ruptures easily.

The purpose of this utility model is to overcome the deficiency in the known technology and a kind of rotary die that improves metal anti-stretching intensity and bond stress and other physical property greatly is provided.

The purpose of this utility model is achieved in that

Four surface of revolutions are made on the centre bore surface of core rod of the present utility model, and its concrete structure is that anchor ring is made in the wherein inlet region on the centre bore surface of core rod; The rounding conical surface is made in the wherein workspace on the centre bore surface of core rod; The wherein sizing area on the centre bore surface of core rod is made the face of cylinder, its diameter phi=0.8 millimeter～36 millimeters; The wherein outlet area on the centre bore surface of core rod is made taper seat.On the centre bore surface of core rod wherein the workspace make the rounding conical surface and wherein sizing area make on the face on the face of cylinder and be shaped on equally distributed 1～12 protruding spiral ribs, this rib is made in the workspace on the face of the rounding conical surface by low and is increased and from narrow to wide, this rib is made the part on the face on the face of cylinder at sizing area, its end face is parallel to this face of cylinder, pitch angle alpha will=5 ° of projection spiral ribs～55 °, the width S of rib=0.1 millimeter～16 millimeters, the height H of rib=0.1 millimeter～9 millimeters, the length L of rib=0.2 millimeter～30 millimeters.

The utility model has following accompanying drawing:

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the expansion schematic diagram of Fig. 1 protrusions spiral ribs 8;

Fig. 3 is the A-A cross-sectional view of Fig. 1 protrusions spiral ribs 8;

Fig. 4 is a perspective view of the present utility model.

Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail:

The composition mould of in die sleeve 7, core rod 6 being packed into, centre bore 5 surfaces of its core rod will include oral region 1 and workspace 2, sizing area 3 and outlet area 4 and make four surface of revolutions, and it is concrete that to constitute be that anchor ring is made in its inlet region 1; The rounding conical surface is made in its workspace 2; Its sizing area 3 is made the face of cylinder; Its outlet area 4 is made taper seat, and these surface of revolutions are to be the rotation bus by connecting to form with circular arc, oblique line, parallel lines, oblique line, serve as that the axle rotation forms with the central shaft of mould, referring to Fig. 1.To make the diameter on the face of cylinder be four minimum diameters in the surface of revolution to sizing area in four surface of revolutions in the centre bore of core rod surface in addition, its diameter phi=0.8 millimeter～36 millimeters, and the present embodiment diameter is elected φ=10 millimeter as.On the centre bore surface of core rod, wherein the workspace make the rounding conical surface and wherein sizing area make on the face on the face of cylinder and be shaped on equally distributed 1～12 protruding spiral ribs, present embodiment is elected 6 protruding spiral ribs as, referring to Fig. 2 and Fig. 3 and Fig. 4.This rib is increased and is progressively changed from narrow to wide by low on the face of the rounding conical surface, and the part on the face on the face of cylinder, its end face is parallel to the face of cylinder.The two sides of rib are ruled surfaces in addition, allow 0 °～30 ° oblique angle in its normal section, and there is 0.01 millimeter～1 millimeter fillet at two ends, rib top.Pitch angle alpha will=5 ° of projection spiral ribs～55 °; The width S of its rib=0.1 millimeter～16 millimeters; The height H of rib=0.1 millimeter～9 millimeters; Pitch angle alpha will=15 ° are selected in the length L of rib=0.2 millimeter～30 millimeters, present embodiment; Rib width S=1.5 millimeter; The high H=0.5 millimeter of rib; The long L=10 millimeter of rib.

The utlity model has advantage and good effect is, because the working condition of mould is rotation , so that work metal Uniform Flow after entering die cavity forms longitudinally tension metal spiral shell Revolve rib, standard the longitudinal fiber of metal, and again because mould rotate therefore raising The metal all surface is the fineness of rib and groove especially, and the result of metal flow harden is big simultaneously Big metal anti-stretching intensity and bond stress and other physical property of improving. Once revolve with the utility model Turn to metal that the drawing moulding processes and bond stress and tensile strength and the superficiality of alloy product thereof The spiral that can all be better than processing with known technology roller mold and hand-drawn wire mould respectively, Indentation steel and plain steel-bar. The utility model is widely used in high strength that high standard requires, big The building structure of span, large bay and other decorating structure are particularly useful for building industry as building The arrangement of reinforcement of member. Both reach economical with materials, reduced cost and the production efficiency height, reached again product The measured purpose of matter.

Claims

1. a rotary die mainly is made up of the core rod of packing in die sleeve, it is characterized in that: four surface of revolutions are made on the centre bore surface of core rod, and its concrete structure is that anchor ring is made in the wherein inlet region on the centre bore surface of core rod; The rounding conical surface is made in the wherein workspace on the centre bore surface of core rod; The wherein sizing area on the centre bore surface of core rod is made the face of cylinder, its diameter phi=0.8 millimeter～36 millimeters; The wherein outlet area on the centre bore surface of core rod is made taper seat, on the centre bore surface of core rod wherein the workspace make the rounding conical surface and wherein sizing area make on the face on the face of cylinder and be shaped on equally distributed 1～12 protruding spiral ribs, this rib is made in the workspace on the face of the rounding conical surface by low and is increased and from narrow to wide, this rib is made the part on the face on the face of cylinder at sizing area, its end face is parallel to the face of cylinder, pitch angle alpha will=5 ° of projection spiral ribs～55 °, the width S of rib=0.1 millimeter～16 millimeters, the height H of rib=0.1 millimeter～9 millimeters, the length L of rib=0.2 millimeter～30 millimeters.