CN201906963U - Straightening, roll finishing and stress adjusting and controlling device for brass bar wires - Google Patents

Abstract

The utility model discloses a straightening, roll finishing and stress adjusting and controlling device for brass bar wires, wherein, an upper roller and a lower roller are arranged on an upper bracket and a lower bracket respectively; the upper bracket is connected with a cross beam, and the lower bracket is connected with a base; a roller face of a concave roller of the upper roller is a flexible roller face that can be adjusted through a hydraulic roller tensioning system; and the roller face of the lower roller is a convex roller face which adapts to the roller face of the upper roller 1. In the straightening, roll finishing and stress adjusting and controlling device for the brass bar wires, the upper roller and the lower roller are in special convex and concave roller shapes, the flexible roller face of the concave roller can be adjusted, and a convex roller is thick at the middle part and thin at the two ends in shape; a thick end of the convex roller is suitable for straightening a bar with a diameter ranging from 50 to 80 mm; and a thin end of the convex roller is suitable for straightening a bar with a diameter ranging from 25 to 50 mm. Therefore, the defect that the straightening effect is ever-changing when a traditional roller is used for straightening bars in different specifications can be avoided, the bars in different specifications can be in complete contact with a straightening roller, and the optimum straightening effect can be achieved.

Description

The device of brass bar wire rod aligning-tumbling-regulation and control stress

Technical field

The utility model relates to the finishing of brass bar wire rod to be handled, and especially relates to the device of a kind of brass bar wire rod aligning-tumbling-regulation and control stress.

Background technology

Through the surperficial residual tension that exists of the brass rod of drawing processing is very harmful, and surperficial tension is the root that alloy produces stress corrosion and crackle.Aborning, brass drawing bar usually because the resting period is long slightly, does not in time carry out annealing in process, is containing ammonia or SO

Crack under the effect of atmosphere and scrap.Free-cutting brass is owing to contain a large amount of fragility elements, and the tendency of stress corrosion cracking is stronger, and general employing of traditional handicraft carried out stress relief annealing under 270-350 ℃ of temperature, and the later brass of annealing also need strip off the skin and pickling processes.At present, what two-roll straightening machine extensively adopted is " recessed flat " roll shape, is used for aligning the line bar of diameter below 18mm more.This small dimension stock usually carries out twice aligning, and first road is rectified with multiple roll or stretch bending is rectified and carried out de-distortion, and second road rectifys with two rollers that to carry out essence strong.Need experienced operator to take long to before rectifying and adjust straightener drafts and roller oblique angle; Change and rectified material diameter, material, need readjustment roller oblique angle, and do not have definite rule to follow, cause the straightening quality instability.The reason that produces is that roller will be aligned by roll extrusion and a spot of recurvation to the very big thrust of bar, and the roller surfaces quick abrasion also forms pit; Sometimes produce bar undergauge phenomenon; Though can reach the smart purpose of rectifying tumbling of bar, there are problems such as operation is numerous and diverse, metal loss is big, lumber recovery is low, production cost height in employing annealing-pickling-strip off the skin and two passage straightening process.The roller of domestic a lot of straightener factory is because copy, no matter no matter what specification of what material all use one to overlap unalterable experience roller.Reach desirable leveling effect, when diameter of rod, elastic modelling quantity, yield strength change, roll forming will be adjusted accordingly, and a kind of roll shape can only be rectified the bar of certain limit.

The utility model content

The purpose of this utility model is exactly the deficiency that exists at above-mentioned prior art, provide a kind of can once align-the burnishing-in diameter is at the free-cutting brass bar of 25-80mm, stress distribution by regulation and control brass rod surface, the realization brass rod is exempted from annealing and is exempted from acid cleaning process, realizes shortened process, reduces production costs, satisfies the aligning-tumbling of big specification brass rod-exempt to anneal and exempt from the technological requirement of pickling.

For achieving the above object, solution of the present utility model is: the device of a kind of brass bar wire rod aligning-tumbling-regulation and control stress that the utility model proposes, top roll is connected with top roll main transmission by roll shaft, lower roll is connected with lower roll main transmission by roll shaft, described top roll and lower roll are contained in respectively on upper bracket and the lower carriage, upper bracket is connected with crossbeam, lower carriage is connected with base, the recessed roller roll surface of described top roll is that the roll surface of described lower roll is set to the protruding roll surface suitable with the top roll roll surface by the hydraulic pressure adjustable flexible roll surface of roller system that rises.

The inner chamber of described top roll is provided with the high-voltage oil cavity of hollow, is provided with oil-in in its roll shaft, the roll surface adjustable hydraulic that oil-in and high-voltage oil cavity the are formed top roll roller system that rises.

The protruding roller roll surface length of described lower roll is than the recessed roller roll surface long 40% of top roll, the roll body curved surface of lower roll is continuous space curved surface, and is thin ends and thick middle, and the roll body two ends are the hyperboloid roll body, adjacent hyperboloid be two sections different cylinders of diameter, be the hyperboloid roll body between two sections cylinders.

Described lower carriage is connected with Traverse Displacement Unit, makes lower carriage can carry out lateral displacement on base.Regulate the mating surface of protruding roller and recessed roller.

Be provided with the roll gap inclining rotary mechanism between described top roll and the lower roll, be furnished with manual ratchet micro-adjusting mechanism on the described roll gap inclining rotary mechanism, described roll gap inclining rotary mechanism is complied with the roll gap between top roll and the lower roll and is regulated.

The device of the brass bar wire rod aligning-tumbling-regulation and control stress that the utility model proposes, its top roll, lower roll has special " convex-concave " roll shape, the flexible roll surface of recessed roller can be regulated, protruding roller roll surface is the five-part form structure, roll surface length is than recessed roller roll surface long 40%, from roll profile, the roll body curved surface is continuous space curved surface, thin ends and thick middle, the roll body two ends are the hyperboloid roll body, adjacent hyperboloid be two sections different cylinders of diameter, be the hyperboloid roll body between two sections cylinders, roll body two ends diameter is inconsistent, and butt end is applicable to that the aligning diameter is the bar of 50-80mm, thin end is applicable to that the aligning diameter is the bar of 25-50mm, the roll surface of top roll carries out roll surface and regulates by the hydraulic pressure roller system that rises, and adapts with the roll surface convexity of protruding roller, has overcome traditional roll body in-and-out shortcoming of leveling effect when the bar of aligning different size, the bar that guarantees different size all contacts with smoothing roll, realizes best leveling effect.The roll gap inclining rotary mechanism makes protruding roller, recessed roller and aligning axis be inclined to certain angle, in the lower roll side direction Traverse Displacement Unit is housed, and makes down roller form the aligning pass, adopts wrong roller, pitches roller, takes out roller, means such as the roller that rises regulate roll gap and pass.Bar oppositely bends through too much helical pitch iso-curvature large deformation press-bending and iso-curvature small deformation in roll gap, and the former makes the residual bending of bar reach consistent everywhere, and the latter makes the bar total length obtain aligning.Roll shape curve is made up of aligning, tumbling and transition region, the entrance side roll gap plays nips and the pre-straightening effect, make the total length bending direction of bar obtain unification, the outlet side roll gap plays the aligning effect, and play unified residual bending and eliminates surperficial action of pulling stress in the iso-curvature district at roller waist place.Two rollers roll, the rubbing bar makes the bar superficial layer produce plastic deformation, and form the compressive stress layer of a sealing on the bar surface, have eliminated the residual tension on bar surface; When the spirality roll-in face that forms when the surface overlapped and is integral, bar reached polishing effect.Realize that brass rod exempts to anneal and exempt from the technological requirement of pickling, shortened process, reduce production costs, satisfy 25-80mm brass rod aligning-tumbling-exempt to anneal and exempt from the technological requirement of pickling.Solved general straightener and can not align end to end, along with diameter of rod changes the difficult problem that drift also takes place leveling effect bar; Straightening quality is obviously promoted, and the residual winding degree after bar is rectified reduces to 0.1-0.3mm/m; External diameter to bar has stronger rounding effect; Can effectively eliminate the undergauge phenomenon after bar is aligned, guarantee dimensional accuracy; Two rollers can form certain cornerite, aligning good stability, guide plate light abrasion, roller life-span.

Description of drawings

Fig. 1 is the structural representation of the utility model embodiment.

The specific embodiment

As shown in Figure 1, the device of brass bar wire rod described in the utility model aligning-tumbling-regulation and control stress, its top roll 3 is connected with top roll main transmission 2 by roll shaft, and lower roll 5 is connected with lower roll main transmission 6 by roll shaft, and top roll 1 and lower roll 5 are driven by top roll main transmission 2 and lower roll main transmission 6 respectively.Described top roll 3 and lower roll 5 are contained in respectively on upper bracket 4 and the lower carriage 7, and upper bracket 4 is connected with crossbeam, and the memorial archway of forming with four root posts between two crossbeams 11 connects, and four pull bars of memorial archway 11 apply prestressing force with hydraulic nut, and the change rigid mounting is flexible frame.Lowering or hoisting gear is equipped with in top roll support 4 Shanghai, this lowering or hoisting gear is contained on the forging of a special plane, be to connect its height of adjusting by carrying device 8 on worm and gear 9 and the hydraulic pressure, two roller end bearings are contained on the rotating disk, directly corresponding with housing screw, the off-centre that causes in the time of can making bar come in and go out roll gap end to end is no more than the support scope of memorial archway.Lower carriage 7 is connected with base 10, and the recessed roller roll surface of described top roll 1 is by the hydraulic pressure adjustable flexible roll surface of roller system that rises.The inner chamber of top roll 1 is provided with the high-voltage oil cavity 3 of hollow, is provided with oil-in in its roll shaft, the roll surface adjustable hydraulic that oil-in and high-voltage oil cavity 3 the formed top rolls 1 roller system that rises.The roll surface of described lower roll 5 is set to and the suitable protruding roll surface of top roll 1 roll surface.The protruding roller roll surface length of described lower roll 5 is than the recessed roller roll surface long 40% of top roll 1, the roll body curved surface of lower roll 5 is continuous space curved surface, thin ends and thick middle, the roll body two ends are the hyperboloid roll body, adjacent hyperboloid be two sections different cylinders of diameter, be the hyperboloid roll body between two sections cylinders.Described lower carriage 7 is connected with Traverse Displacement Unit 12, makes lower carriage 7 can carry out lateral displacement on base 10.Regulate the mating surface of protruding roller and recessed roller.Be provided with roll gap inclining rotary mechanism 13 between described top roll 1 and the lower roll 5, be furnished with manual ratchet micro-adjusting mechanism on the described roll gap inclining rotary mechanism 13, the roll gap between 13 pairs of top rolls 1 of described roll gap inclining rotary mechanism and the lower roll 5 is according to regulating.Load onto the lubricated roll surface of atomizer at the roll gap place and clean the bar surface, on bar discharging guide pin bushing, refill and purge air curtain, be used to dry up the oil on bar surface.

Claims (5)

1. the device of brass bar wire rod aligning-tumbling-regulation and control stress, top roll (3) is connected with top roll main transmission (2) by roll shaft, lower roll (5) is connected with lower roll main transmission (6) by roll shaft, described top roll (3) and lower roll (5) are contained in respectively on upper bracket (4) and the lower carriage (7), upper bracket (4) is connected with crossbeam, lower carriage (7) is connected with base (10), it is characterized in that: the recessed roller roll surface of described top roll (1) is by the hydraulic pressure adjustable flexible roll surface of roller system that rises, and the roll surface of described lower roll (5) is set to and the suitable protruding roll surface of top roll (1) roll surface.

2. the device of brass bar wire rod according to claim 1 aligning-tumbling-regulation and control stress, it is characterized in that: the inner chamber of described top roll (1) is provided with the high-voltage oil cavity (3) of hollow, be provided with oil-in in its roll shaft, the roll surface adjustable hydraulic that oil-in and high-voltage oil cavity (3) are formed top roll (1) the roller system that rises.

3. the device of brass bar wire rod according to claim 1 aligning-tumbling-regulation and control stress, it is characterized in that: the protruding roller roll surface length of described lower roll (5) is than the recessed roller roll surface long 40% of top roll (1), the roll body curved surface of lower roll (5) is continuous space curved surface, thin ends and thick middle, the roll body two ends are the hyperboloid roll body, adjacent hyperboloid be two sections different cylinders of diameter, be the hyperboloid roll body between two sections cylinders.

4. the device of brass bar wire rod according to claim 1 aligning-tumbling-regulation and control stress, it is characterized in that: described lower carriage (7) is connected with Traverse Displacement Unit (12), make lower carriage (7) on base (10), can carry out lateral displacement, regulate the mating surface of protruding roller and recessed roller.

5. the device of brass bar wire rod according to claim 1 aligning-tumbling-regulation and control stress, it is characterized in that: be provided with roll gap inclining rotary mechanism (13) between described top roll (1) and the lower roll (5), be furnished with manual ratchet micro-adjusting mechanism on the described roll gap inclining rotary mechanism (13), described roll gap inclining rotary mechanism (13) is complied with the roll gap between top roll (1) and the lower roll (5) and is regulated.

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