CN2057121U

CN2057121U - Forming device for multiple swisted steel by roll milling

Info

Publication number: CN2057121U
Application number: CN 88216188
Authority: CN
Inventors: 吴钟群
Original assignee: Individual
Current assignee: Individual
Priority date: 1988-11-08
Filing date: 1988-11-08
Publication date: 1990-05-16

Abstract

The utility model relates to a forming device for producing the multi head screw steel, which can roll and mill the multi-strong reinforcing steel bar for building or ordinary hot rolling coiled bar reinforcing steel bar into screw steel in the process of cooling the plate. The device is composed of a plurality of rolling and milling wheels which is equispaced arranged on the same roller frame and incline to the same direction with the axial line and form a certain angle. While the workpieces performing straight-line motion by pulling force, the rolling and milling wheel autorotates passively, and meanwhile the roller frame revolves around the working axial line, and thus the round steel is rolled into twisted steel.

Description

Forming device for multiple swisted steel by roll milling

The utility model is a kind of device of producing the multiple thread reinforcing bar.Be mainly used in high tensile reinforcement for building, common hot rolling dish round bar or the cold-drawn constantly of vertical bar steel bar continuous and roll and roll over into screw-thread steel.

As everyone knows, the bond stress of reinforcing bar in concrete, except the factors such as cohesive force of the contraction of concrete, cement, the increase of rebar surface unevenness, bond stress also will have significant increase, therefore, use deformed bar, can improve the bond stress of reinforcing bar in the concrete product, make full use of the dosage of reinforcing bar, save rolled steel dosage.For a long time, people are studying the deformed bar that can improve bond stress always, have produced hot rolling chevron, crescent moon line, cold rolling rag, multiply kink, single reinforcement and have flattened deformed bars such as cold twisting, local pier be thick and ironed.But except the hot rolling deformation reinforcing bar more than 12 millimeters, the production method of cold deformation reinforcing bar is more complicated all, and inconvenience is promoted.For example: the steel bar cold rolling of Taiyuan Heavy Machinery College development is turned round technology and equipment thereof, and its manufacturing procedure is: hot rolling dish unit reinforcing bar is carried out cold-drawn → become twisted shape screw-thread steel vertical bar → scale → cut-out around volume → alignment → draw down → cold twisting.(see " Chinese technological achievement complete works " 1987 version 403 pages).At present, the concrete preform still is extensive use of plain bar.

The utility model is intended to design the equipment of comparatively simple and easy to do cold working multiple thread deformed bar, to reduce the production cost of deformed bar, promotes the production and the use of spiral.

Device described in the utility model has one group of several work to roll rolling wheel 22, generally can be at 2～6, and these roll rolling wheel with rolling

Bearing is supported on the roller axle bed 23, and the roller axle bed is perpendicular to workpiece 20 Even being distributed on the inwall of cylindrical shape roller combined bay 24 on the same plane of axis, the axis of each roller axis and workpiece is the tilt alpha angle in the same way, generally can be 65 °～75 °, the two ends of roller combined bay 24 are bearing in respectively in shell 25 bodies with cone bearing 21, shell is fixed on the support by rear support 19, and a regular polygon pass is formed at several working face edges that roll rolling wheel on the vertical plane of axis of workpiece.

The forming principle of spiral is, its pass is that the requirement section by required screw-thread steel designs, be slightly larger than by the round steel that rolls the pass inscribed circle diameter that rolling wheel forms, because pulling force moving linearly in pass, roller is subjected to the frictional force effect of workpiece and the rotation of rolling, since several roll rolling wheel around with the Gong spare And certain angle α that tilts in the same way, so this group is rolled rolling except that separately around the axis rotation, also revolve round the sun around axis of workpiece with the roller combined bay, the round steel of moving linearly rolls under the spiral spreading effect of rolling wheel rotation and revolution at several, be rolled into several head thread steel, its number is identical with the number of rolling rolling wheel.

The screw-thread steel that the utility model is produced; it is the method for taking cold-drawn to add to roll rolling; can utilize various hot candied unit current in the present production,, load onto and roll the rolling shaped device as D5C type wire drawing machine; pull out the spiral of rolling over reduced size; as shown in Figure 1, on the common hot candied unit that in existing production, uses, unit afterbody circular hole wire-drawing die is changed; install screw-thread steel in its position and roll rolling shaped device 8, can produce the screw-thread steel wire rod.In addition, also can only use and roll the rolling shaped device, add tractive force, drawing is difficult for the larger-diameter reinforcing bar of alignment, as the vertical bar multiple-thread steel series of products of φ more than 8.Shown in the accompanying drawing 2, roll over the two ends that shaped device 14 and hoist engine 18 are placed in rectangular seat,, clamp, start hoist engine, can extract required vertical bar screw-thread steel with chuck 16 with passing shaped device 14 behind the straight steel bar dog with rolling.

The utility model is used to produce the multiple thread reinforcing bar, its method is simple, operation is few, apparatus structure is uncomplicated, can be directly used on the general drawing machine, be the rolling spreading owing to become crowded the drawing of the slip of wire-drawing die, the consume of shaped device reduces, the also corresponding reduction of required pulling force, and can continuously produce wire rod, be convenient to promotion and implementation, the cold drawn rolling screw-thread steel of being produced that rolls, be used for building existing around or precast member produce, can reduce labour intensity, simplify production technology, under equal conditions, its amount of reinforcement can reduce about 20% or 7% than with round bar, and this screw-thread steel also can be formulated new-type antiskid pedal etc.

The description of drawings of the utility model specification.

Fig. 1 is that screw-thread steel rolls and rolles over shaped device is processed the wire rod screw steel wire on hot candied unit schematic diagram, 1 wire rod uncoiling frame wherein, 2 round steel wire rods, 3,4,5 progressive wire-drawing dies, 6,7 godet rollers, 8 multiple thread shaped devices, 9 unload guide frame, 10 hot candied drums, 11 screw steel wire products.

Fig. 2 is that multiple-thread steel rolls and rolles over shaped device processing vertical bar screw-thread steel schematic diagram, 13 vertical bars unit steel wherein, 14 multiple thread building mortions, 15 vertical bar screw-thread steel products, 16 chucks, 17 haulage cables, 18 hoist engines.

Fig. 3 is that multiple-thread steel rolls rolling shaped device structure chart.19 rear supports wherein, 20 charging light round steel, 21 taper roller bearings, 22 roll rolling wheel, and 23 roll the rolling wheel axle bed, and 24 roll the rolling wheel combined bay, 25 shells, 26 screw-thread steels that are shaped, 27 roll the hole shape that rolling wheel is formed.

Fig. 4 is I among Fig. 3-I profile.

Embodiments of the invention

Be used for D5C type drawing machine, on the position of the afterbody circular hole wire-drawing die of drawing machine, change the multiple-thread steel shaped device, this device is made up of the quaternate rolling wheel that rolls, hole shape is a square, roller outer bus is long, the outer is to hole shape centre-to-centre spacing, and its size is selected by required section, and the material of roller adopts alloy tool steel.

The roller axle bed is placed in the combined bay inwall, is set in 22 ° the groove of tilting in the same way.

The turning rolls shell has enough frees degree by rear support and slightly upper and lower, the move left and right of drawing machine support connection hinged-support.

Claims

1, the cold drawn rolling shaped device that rolls of a kind of multiple-thread steel, form by rolling rolling wheel, bearing, bearing block, shell, commentaries on classics bearing etc., it is characterized in that, several roll rolling wheel and are installed in the cylindrical shape roller combined bay 24, and be distributed on the same plane perpendicular to axis of workpiece, each rolls rolling wheel axis and axis of workpiece certain angle that tilts in the same way.

2,, it is characterized in that cylindrical shape roller combined bay 24 two ends are supported in the crust of the device 25 with bearing 21 according to the described device of claim 1.

3,, it is characterized in that on plane a regular polygon pass is formed at several working face edges that roll rolling wheel perpendicular to axis of operation according to the described device of claim 1.