CN2118601U

CN2118601U - Cold roll forging machine

Info

Publication number: CN2118601U
Application number: CN 92210136
Authority: CN
Inventors: 蔡德敷
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-01-22
Filing date: 1992-01-22
Publication date: 1992-10-14

Abstract

The utility model discloses a cold roll forging machine which can make cold rolling screw steel bar, mainly comprising a base, two single three roll forging machines which are oppositely arranged are fixedly connected with the base, and each single three roll forging machine is respectively composed of a base, a cantilever gear speed change mechanism, three rollers and three pairs of bevel gears. The belt pulley and two drive gears of the main drive shaft of the base are driven by an electric motor, which drives the speed change mechanism to work to cause three rollers of each single three roll forging machine to be synchronous and rotated to same direction, and the external shape of cold rolling screw steel bar with three rows of crescent transverse bars is roll forged. The utility model is characterized in that raw materials do not need to be dragged when worked, and the occurrence of the phenomenon of lengthwise help does not exist, which can keep the high elongation rate of the raw materials.

Description

Cold roll forging machine

The utility model relates to a kind of special equipment that spiral is used of making, and particularly a kind ofly makes the spiral Cold roll forging machine that profile has three row's crescent cross ribs.

The spiral of China's production at present mostly is hot rolling, profile is two row's crescent cross rib and two vertical ribs, its intensity of this kind hot-rolled screw thread reinforcing bar is on the low side, and in the world, especially the spiral of West Germany's production mostly is cold rolling, its profile is to have three row's crescent cross ribs, and these cross ribs have a certain degree with axis again, this cold-rolled threaded reinforcing steel has the high strength of cold group of low-carbon (LC) reinforcing bar, has the good advantage of bond stress between deformed sections reinforcing bar and the concrete again, be the new type steel that building trade is used, be used on the armored concrete and can save steel 30%, can improve bond stress between reinforcing bar and the concrete simultaneously more than 2.6 times.This shows and use above-mentioned cold-rolled threaded reinforcing steel to have remarkable economic efficiency and social benefit.

Before 1989, it still is a blank that China produces cold-rolled threaded reinforcing steel, just produces cold-rolled threaded reinforcing steel as a trial at the beginning of the year ends 89 and nineteen ninety, and its production method is to draw--rolling-type.Promptly use wire drawing machine tractive (doing power) in front, and then the cross rib of roll extrusion crescent in the above, the colored roller that roll extrusion this moment is used is passive.Though the chill performance of spiral of producing with the method is good, percentage elongation too small (cold brittleness is big), circularity is poor simultaneously, has vertical rib sometimes, and particularly this kind method is difficult to produce the spiral of big specification (as φ ^b ₈-φ ^b ₁₄).

In view of the advantage of above-mentioned cold-rolled threaded reinforcing steel and its remarkable society, economic benefit and the building trade conditions of demand to big specification spiral, the purpose of this utility model provides a kind ofly can produce big specification and percentage elongation is big, outward appearance meets the cold-rolled threaded reinforcing steel of West Germany's form roll forging special equipment.

The purpose of this utility model is realized by following technical scheme: list three forging rolls of two relative installations on it comprises pedestal and is connected in this pedestal, each single three forging roll is respectively by base, cantilever speed-changing gear box and three square toes that are located at that this case outside (two casees opposite sides) arranges by five equilibrium angle (120 degree) and respectively be located at three rolls formations that roll shaft is connected in three square toes, three rolls of one of them single three forging roll are smooth roll, three rolls of another single three forging rolls are the flower roller, and three smooth rolls and three staggered phase differences 60 of colored rollers of arranging relatively on two list three forging rolls are spent angles; Be provided with respectively by travelling gear in the cantilever speed-changing gear box in two list three forging rolls, gear broad in the middle, three gear graduation transmission mechanisms that pinion constitutes, wherein each gear is located on separately the cantilever gear shaft respectively, the gear shaft of gear broad in the middle is a hollow shaft, a bevel pinion respectively is connected on three pinions gear shaft separately, and this bevel pinion be located at the bevel gear wheel that roll shaft links to each other in the square toes respectively and be meshed, three pinions all are meshed with gear broad in the middle, a gear in three pinions through travelling gear with cross base in driving gear on the final drive shaft be meshed, also be provided with on the final drive shaft and can make the bel-drivenn belt pulley with motor.During work, by motor drives belt pulley and two driving gears rotation coaxial with it, and drive thus on two list three forging rolls three smooth rolls and three colored rollers simultaneously, synchronous, equidirectional rotation, when the reinforcing bar of certain specification size is imported from the hollow shaft of middle gear wheel, three smooth roll frictionallies are nipped material, and carry out roll forging, and at this moment material enters again in other three colored rollers of phase difference 60 degree equally, roll forging once more makes it roll forging and goes out satisfactory spiral.

Characteristics of the present utility model are that three rolls that are provided with respectively on two list three forging rolls are initiatively roll, raw material is without tractive during work, thereby do not have the phenomenon that vertical rib occurs, and kept the higher percentage elongation of raw material, can produce the spiral of big specification with this equipment.Two shared motors of list three forging rolls also make the cost of this equipment greatly reduce in addition.

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 is the utility model structural representation.

Fig. 2 is that the B of Fig. 1 is to view.

Fig. 3 is that the A of Fig. 1 is to view.

With reference to the accompanying drawings, the utility model by pedestal 18 be connected in this pedestal on list three forging rolls of two relative installations constitute.Wherein each single three forging roll is made of base 17, cantilever speed-changing gear box 15, three square toes 8, three rolls 12 and three bevel pinions 6, three bevel gear wheels 7 respectively.Three square toes 8 wait the branch angle to be connected in the outside of speed-changing gear box 15 by bolt 9 by 120 degree respectively, three rolls 12 respectively be located at three roll shafts 13 in the square toes and link to each other, three rolls 12 on single three forging rolls in right side are smooth roll, and the roll 12 on single three forging rolls in left side is the flower roller.Cantilever speed-changing gear box 15 inside are equipped with by gear 5 broad in the middle, travelling gear 3, three gear graduation transmission mechanisms that pinion 4 constitutes, the gear shaft of each gear is cantilever, simplified structure under the situation that does not influence intensity and rigidity, makes dismounting very convenient so greatly.Three bevel pinions 6 respectively with three pinions, 4 coaxial being connected, promptly with the pinion coaxial rotation, simultaneously three bevel pinions 6 respectively be connected in roll shaft 13 on bevel gear wheel 7 be meshed, cross a final drive shaft 19 in two monomer bases 17, be fixed with on this axle and can make bel-drivenn belt pulley 1 and two driving gears 2 with motor, rotate by driven by motor belt pulley 1 during work, meanwhile drive two travelling gears 3 in list three forging rolls respectively with coaxial two driving gears 2 of this belt pulley, by this gear 3 power is passed to a pinion 4, drive gear 5 broad in the middle and two other pinion 4 simultaneously, this moment, the bevel pinion 6 on the axle drove rolls 12 simultaneously by the bevel gear wheel that is meshed with it 7 separately, synchronously, equidirectional rotation, when the reinforcing bar of certain specification size penetrates from the hollow shaft of right side gear broad in the middle, three the smooth roll frictionallies in right side are nipped reinforcing bar, and carry out roll forging, send into then in three the colored rollers in left side of spending with three smooth roll phase differences 60, roll forging once more, pass in the hollow shaft by left side gear broad in the middle, promptly make profile and have three row's crescent moon cross rib and angled with the axis again cold-rolled threaded reinforcing steels of the horizontal side of body.

For the ease of adjusting the radial displacement of square toes 8, speed-changing gear box 15 be positioned at install square toes one side above be provided with the projection of gearbox body 15 one and adjust support 20, this adjustment support is provided with the turnbuckle 10 or the puller bolt 11 that can make square toes 8 displacement up or down.

Final drive shaft 19 also can be split type, and promptly the power transmission shaft that will be placed in two monomer bases by jaw clutch 16 is linked as a final drive shaft, makes it both can constitute when making single three forging rolls, Cheng Shuansan forging roll capable of being combined again.

Claims

1, a kind of Cold roll forging machine of making cold-rolled threaded reinforcing steel, it is characterized in that: list three forging rolls of two relative installations on it comprises pedestal and is connected in this pedestal, each single three forging roll is respectively by base, cantilever speed-changing gear box and three square toes that are located at that this case outside arranges by the five equilibrium angle and respectively be located at three rolls that roll shaft is connected in three square toes and constitute, three rolls of one of them single three forging roll are smooth roll, three rolls of another single three forging rolls are the flower roller, and three smooth rolls and three staggered phase differences 60 of colored rollers of arranging relatively on two list three forging rolls are spent angles; Be provided with respectively by travelling gear in the cantilever speed-changing gear box in two list three forging rolls, gear broad in the middle, three gear graduation transmission mechanisms that pinion constitutes, wherein each gear is located on separately the cantilever gear shaft respectively, the gear shaft of gear broad in the middle is a hollow shaft, a bevel pinion respectively is connected on three pinions gear shaft separately, and this bevel pinion be located at the bevel gear wheel that roll shaft links to each other in the square toes respectively and be meshed, three pinions all are meshed with gear broad in the middle, a gear in three pinions through travelling gear with cross base in driving gear on the final drive shaft be meshed, also be provided with on the final drive shaft and can make the bel-drivenn belt pulley with motor.

2, cold roll forming machine according to claim 1, it is characterized in that: speed-changing gear box be positioned at install square toes one side above be provided with protruding adjustment rack with the gearbox one, this adjustment rack is provided with the turnbuckle or the puller bolt that can make square toes displacement up or down.