CN2239845Y

CN2239845Y - Device for producing cold-rolled ribbed reinforcing bar

Info

Publication number: CN2239845Y
Application number: CN 94221292
Authority: CN
Inventors: 朱为昌; 刘希和; 郑宝龙
Original assignee: University of Science and Technology Beijing USTB
Current assignee: University of Science and Technology Beijing USTB
Priority date: 1994-09-30
Filing date: 1994-09-30
Publication date: 1996-11-13
Anticipated expiration: 2004-09-30

Abstract

The utility model provides a new device for producing cold-rolled ribbed reinforcing bars, which comprises a machine base of three rollers which are distributed in a Y shape in the machine base, a lubricating device and an adjustable take-up device. The rotation of the three rollers is changed into initiative rotation; the troublesome process of manual operation is reduced; liquid lubrication is realized by changing the structure of the lubricating device; rolled products are not only in a coiling state but also in a straight state; the specification of products can be extended.

Description

The process units of cold rolled reinforcing steel bar with ribs

The utility model belongs to metal rolled field.

Cold rolled reinforcing steel bar with ribs (being commonly called as cold-rolled threaded reinforcing steel) is the high performance steel that a kind of novel concrete is used, its dimensions is Φ 4～Φ 12m, intensity rank 550～800MPa, because its intensity index is greatly improved than the hot calendering round bar with the trade mark, enough plasticity index are arranged again, thereby energy reinforcing steel bar and concrete bond stress, improve the anchoring of reinforcing bar in concrete, improve the intensity and the safety stock of concrete component, can save steel about 10～30%, have favorable economic benefit and social benefit.

Existing cold rolled reinforcing steel bar with ribs production method and device (CN1014500B etc.) comprise that paying out machine, descaling mill, the lubricated machine of dry powder, three rollers roll mould cold-rolling mill, rotary bench and trunk-type take-up machine etc.Its operating process is: earlier wire rod is placed on that a circle one launches all over the ground on the paying out machine, therefrom draw the head of using the bar pointer pointing in advance, pass descaling mill, the lubricated machine of dry powder, pierce into three rollers again and roll the mould cold-rolling mill, clamp the head of wire rod pointing then by rotary bench.Reel is subjected to the motor-driven active rotation, be wrapped in reinforcing bar on the reel round and round, the pulling force of bestowing by the reel of active rotation pulls out reinforcing bar and makes reinforcing bar to finish the forming process of tube reducing and indentation from the cold-rolling mill three roll pass, obtain the finished product cold rolled reinforcing steel bar with ribs at last, and coil the state delivery by the admission machine harvest.From above-mentioned production run process its deficiency of existing as can be seen: 1. the lubricated machine of the dry powder on the milling train can only use the powdery lubricant, Steel Wire Surface is to be difficult to its absorption is formed firm lubricating layer or lubricating layer carrier in its surface, and, powdery lubricant breaker roll and reinforcing bar do not produce cooling effect, therefore, the lubricant effect that can not get expecting is unfavorable for improving the mechanical performance of reinforcing bar.2. three rollers roll three rolls of mould wire drawing machine can not active rotation, thereby the wire rod of can not nipping is automatically realized the operation of rolling, must roll mould to wire rod head pointing with passing in advance, and clamp and be wrapped on the reel, increase the fussy hand operation operation by drawing block.3. the power of cold-rolled process is provided the virial that reinforcing bar produces by the drawing block of active rotation, as otherwise reinforcing bar is wrapped on the reel, this cold-rolled process just can't be realized.Therefore, the reinforcing bar product that adopts this mode of production and device to produce only can be coiled state delivery, because cold rolled reinforcing bar intensity is very high, the reinforcing bar of coiling state delivery is difficult to carry out straightening again and uses, and brings very big difficulty to site operation.4. reinforcing bar will produce plastic bending through reel in process of production, the diameter of this reel is not very big, be generally Φ 550～Φ 880mm, therefore, such process units only can be produced the small dimension reinforcing bar of Φ 4～Φ 6mm, reinforcing bar greater than Φ 8mm almost can't be produced, and has limited the demand in market widely.

The purpose of this utility model is the process units that is to provide a kind of cold rolled reinforcing steel bar with ribs, overcomes the deficiency of said apparatus.Three rolls are active rotation, to reduce the fussy hand operation operation; Change lubricating arrangement, to realize hydrodynamic lubrication; Shut out that product is not only the state of coiling and can be the vertical bar state, and can enlarge description.

The utility model is made up of the mill stand, lubricating arrangement, the adjustable take-up that are the roll that the Y type arranges on three its inside.

Fig. 1 is the utility model structural representation

Fig. 2 is for driving the figure that is in transmission connection of roll rotation

Fig. 3 is adjustable take-up structural representation;

Among Fig. 1, mill stand is equipped with the transmission pipeline of lubricating arrangement and shower nozzle etc., and the port of export of mill stand has an adjustable take-up.

Among Fig. 1, conveyance conduit 8, valve 7 shower nozzles 9 of lubricating fluid have been installed above mill stand 10, lubricating fluid can directly spray on roll in reinforcing bar and the frame, gear, the reinforcing bar, play and lubricate and cool off two kinds of effects, the bottom of mill stand connects a settling tank 1 and storage bin 2, be inserted with conveyance conduit in the storage bin, and a water pump 3 is housed, used lubricating fluid inflow settling tank 1 is back in the storage bin 2 and precipitates once more and cool off, after the filtration, again lay conveyance conduit by water pump 3 and recycle, 5 is the railing on the admission machine, and 11 is wire rod.

Among Fig. 2, three alternate rolls of 120 ° 13 are arranged in the frame 10, the angle of three roll shafts is 60 °, wherein long roll shaft 19 is the final drive shaft of milling train, two short axles 20 are the inferior power transmission shaft of milling train in addition, in the both sides that initiatively pass axle 19 topping rolls 13

angular wheel

12 and 14 are arranged respectively, they respectively with inferior power transmission shaft 20 on the angular wheel engagement.All rolls and angular wheel all link together with three power transmission shafts respectively by key, and final drive shaft 19 is connected by the power transmission shaft of shaft coupling 15 with gearbox 16; Motor 18 is connected with gearbox 16 1 ends by shaft coupling 17, and gearbox 16 other ends have several output shafts, is connected with the final drive shaft 19 of support 10 by shaft coupling 15, and interior three power transmission shafts of milling train and the roll that links are thereon just followed rotation.

Among Fig. 3, the port of export of milling train is provided with a take-up 6, by horizontal level a pair of spacing adjustable nip roller 23 and three adjustable bending rolls 22 is installed.After the finished product reinforcing bar leaves the last rolling mill port of export, the roller 23 of being nipped is immediately bitten and is sent in the bending roll 22, by adjusting the relative position of bending roll, the finished product reinforcing bar is bent to arbitrary diameter, therefore, what both can obtain various different-diameters coils reinforcing bar 4, and the finished product reinforcing bar 21,17 that also can obtain vertical bar is shaft coupling.

Implementation procedure of the present utility model is: motor 18 is passed to gearbox 16 to moment of torsion by shaft coupling 17, by shaft coupling 15 moment of torsion is passed to the final drive shaft 19 of several working stands 10 again, by the angular wheel in the working

stand

12 and 14 moment of torsion is sent to roll on time power transmission shaft again, three rolls energy active rotation during not steel rolling, when wire rod is sent in the roll pass, the roll wire rod of just nipping is automatically realized the operation of rolling, thereby has saved existing process units because roll is passive necessary pointing and wears operation hand-manipulated such as mould.Wire rod does not need reinforcing bar is wrapped on the reel and can realize the operation of rolling because roll can active rotation be nipped, the tube reducing of wire rod and press overall process that rib is shaped to the Ribbed Bar finished product fully point-blank tandem rolling finish, do not produce any crooked or distortion, therefore, three roller apparatus for cold rolling of this roll active rotation not only can make the reinforcing bar finished product of production be the vertical bar shape naturally, realize the delivery of vertical bar shape, bring convenience to unit in charge of construction, and it also realizes the production of major diameter reinforcing bar easily.There is motor to be used as power in the take-up 6 of this device, by decelerator power is passed to nip roller 23 and bending roll 22, thereby the roller 23 of nipping can automatically be bitten the finished product reinforcing bar that comes out from milling train and send in the bending roll 22, carry out for making the order of nipping, reinforcing bar to different size can be realized by the pass size that adjustment is nipped between the roller 23, for the reinforcing bar that obtains any bending radius is coiled, can realize by the operating position of adjusting bending roll 22, the position of the railing 5 on the take-up reel can be moved along radial direction, so that arbitrarily change the diameter of coiling, guarantee that the bending diameter of different size reinforcing bar is in the elastic bending state.The rotation of take-up reel is the thrust of advancing by reinforcing bar, also can start the power set that are provided with under the take-up reel in case of necessity and give an augmented thrust, guarantees that the rotary speed and the reinforcing bar mill speed of take-up reel is complementary.When rolling, liquid lubricant leaves in the storage bin 2, by pump 3 lubricating fluid is flowed in the three-high mill via conveyance conduit 8, valve 7 and shower nozzle 9, wherein roll and bevel gear and the reinforcing bar that rolled are cooled off and lubricate, with life-span of improving roll and gear and the temperature that reduces reinforcing bar, improve the mechanical performance of reinforcing bar finished product.Used lubricant can make iron scale and other contamination precipitation get off during via settling tank, flows back to storage bin 2, uses through precipitation, filtration cycle through return line again.

Major advantage of the present utility model is:

1, the roll of the active rotation wire rod of automatically nipping is realized the operation of rolling, economizes Remove the necessary wire rod pointing of existing process units, worn the workers hand-manipulated such as mould Order has been simplified operating process.

2, can directly produce vertical bar shape reinforcing bar finished product.

3, can produce the reinforcing bar of coiling that is in the elastic bending state.

4, can produce the reinforcing bar finished product of the whole specifications of Φ 4～Φ 12mm.

5, lubricating arrangement has concurrently lubricated and cools off two kinds of functions, and lubricating fluid can recycle, no dust pollution.

Claims

1, a kind of process units of cold rolled reinforcing steel bar with ribs, comprise that there is the mill stand of three rolls that are Y type layout its inside, cooling and lubricating device, adjustable take-up, it is characterized in that, motor is connected with gearbox one end by shaft coupling, gearbox other end output shaft is connected with the final drive shaft of support by shaft coupling, respectively there is an angular wheel roll both sides on the final drive shaft, they respectively with inferior power transmission shaft on the angular wheel interlock, the port of export of milling train is installed a pair of roller of nipping by horizontal level, three bending rolls, the conveyance conduit of lubricating fluid has been installed in the top of mill stand, valve, shower nozzle, the support bottom connects a settling tank and storage bin, be inserted with conveyance conduit in the storage bin, and a water pump is housed.