CN200977540Y - Iso-curvature turning stop device for steel bar straightening machine - Google Patents

Abstract

The utility model relates to a steel bar straightening machine, in particular to an equal curvature anti-rotation device of the steel bar straightening machine. It is characterized in that two lower straightening rollers (2) arranged side by side are installed on the left transmission shaft (10) and the right transmission shaft (14), and an upper straightening roller (5) is installed on the two lower straightening rollers (2). ). Wherein the roll spacing of two lower straightening rollers (2) and the reduction amount of the upper straightening roller (5) can be adjusted to adapt to straightening steel bars of different diameters. The utility model is installed in the horizontal roller system of the steel bar straightening machine. When straightening, the steel bar (3) can be rolled in this mechanism by adjusting the roll spacing of the lower straightening roller (2) and the upper straightening roller (5). plastic deformation occurs. In this way, the rotation of the steel bar (3) produced during the straightening process can be effectively controlled, and at the same time, after the steel bar (3) undergoes plastic deformation, the residual curvature of the steel bar (3) can be unified to achieve equal curvature, thereby ensuring the straightening quality of the steel bar.

Description

Equal curvature anti-rotation device of steel bar straightening machine

technical field

The utility model relates to a steel bar straightening machine, in particular to an equal curvature anti-rotation device of the steel bar straightening machine.

Background technique

At present, when the parallel-roller steel bar straightening machine straightens the steel bar, the steel bar tends to rotate along the direction of its own axis during the bending process, and the original curvature of the steel bar is often quite different. In this way, the deformation plane of the steel bar is unstable. The second is that the original curvature of the steel bar is not uniform, which makes the straightening effect of the steel bar unsatisfactory.

Contents of the invention

In order to solve the above-mentioned problems existing in the parallel-roller steel bar straightening machine, the utility model provides an equal-curvature anti-rotation device of the steel bar straightening machine, which prevents the self-rotation of the steel bar while straightening, and unifies the original curvature of the steel bar to reach The purpose of equal curvature straightening, and then solve the problems existing in the above-mentioned background technology.

The technical scheme adopted by the utility model to solve its technical problems is: two lower straightening rollers arranged side by side and an upper straightening roller placed on the two lower straightening rollers, wherein the roll distance of the two lower straightening rollers is Both the reduction amount of the upper straightening roller and the upper straightening roller can be adjusted to adapt to straightening steel bars of different diameters. During straightening, by adjusting the roll distance of the upper straightening roller and the two lower straightening rollers, the steel bar undergoes large plastic deformation in the mechanism, which can effectively control the rotation of the steel bar during the straightening process, and at the same time, After the steel bar undergoes large plastic deformation, the uniform curvature residual reaches equal curvature, which ensures the straightening quality of the steel bar.

The axes of the two lower straightening rollers are on a horizontal plane; after the upper straightening roller is pressed down during work, the line connecting the center of the upper straightening roller and the center of the two lower straightening rollers with the same roller diameter forms an isosceles triangle, and the steel bar The axes are respectively tangent to the circumference formed by the upper straightening roller and the bottom of the lower straightening roller groove with the same diameter as the two rollers.

The beneficial effect of the utility model is: the mechanism is arranged in the horizontal roller system of the steel bar straightening machine, which can effectively prevent the self-rotation of the steel bar during the straightening process, and at the same time unify the curvature of the steel bar to realize the equal curvature straightening of the subsequent roller system straight.

Description of drawings

Fig. 1 is the structural representation of the equal curvature anti-rotation device of steel bar straightening machine;

Fig. 2 is the equal curvature anti-rotation device A-A sectional view of steel bar straightening machine;

Fig. 2 is the equal-curvature anti-rotation device B-B sectional view of steel bar straightening machine;

Fig. 4 is a schematic diagram of the notch in the straightening roller groove;

Fig. 5 is a partial enlarged view of I;

Figure 6 is a partial enlarged view of II;

Fig. 7 is a partial enlarged view of III.

In the above drawings, 1. Front left roller distance adjustment device, 2. Lower straightening roller, 3. Steel bar, 4. Press down adjustment device, 5. Upper straightening roller, 6. Rear right roller distance adjustment device , 7. Frame, 8. Left sprocket, 9. Spring, 10. Left transmission shaft, 11. Rear left roller distance adjustment device, 12. Intermediate wheel, 13. Right sprocket, 14. Right transmission shaft, 15. Front right roller distance adjustment device, 16. Scoring, 17. Power input sprocket, 18. Front slider, 19. Front guide rail, 20. End cover, 21. Rolling bearing, 22. Rear slider, 23. Rear guide rail , 24. Front locking device, 25. Rear locking device, 26. Groove, 27. Upper locking device, 28. Upper straightening roller.

Detailed ways

Example

Below in conjunction with accompanying drawing, present embodiment is described in detail:

Fig. 1 is an embodiment (seeing Fig. 1) disclosed by the utility model, on the left transmission shaft 10 of frame 7 and the right transmission shaft 14, the lower straightening roller 2 that two roll diameters are identical, two lower straightening rollers 2, the upper straightening roller 5 is installed, and the roll diameter of the upper straightening roller 5 is larger than that of the lower straightening roller 2, and there are notches in the grooves 26 of the two lower straightening rollers 2 and the upper straightening roller 5 16. Right transmission shaft 14 is installed in the inner ring of rolling bearing 21, and is fixed on the front slide block 18 by end cover 20, adopts screw nut mechanism between the front right side roller distance adjusting device 15 and front slide block 18. The right side roller distance adjusting device 15 before rotation can make the front slide block 18 move on the front guide rail 19; After the adjustment is completed, it is locked by the front locking device 24 and the rear locking device 25 . The structure of the rear right side roller distance adjustment device 6, the front left side roller distance adjustment device 1, and the rear left side roller distance adjustment device 11 is identical with the front right side roller distance adjustment device 15. The pressing adjustment device 4 is in contact with the middle part of the upper straightening roller shaft 28, two springs 9 are arranged at both ends of the upper straightening roller shaft 28, and an upper locking device 27 is arranged on the pressing adjustment device 4 .

The left sprocket 8 and the right sprocket 13 are housed on the left transmission shaft 10 and the right transmission shaft 14, and the left sprocket 8 and the right sprocket 13 are meshed with the intermediate wheel 12.

The lower straightening roller 2 is the main drive roller and obtains power from the steel bar straightener by the power input sprocket 17. During straightening, the steel bar 3 undergoes plastic deformation between the three straightening rollers, and while overcoming the self-rotation of the steel bar, the curvature of the steel bar is unified to achieve the purpose of equal curvature straightening.

Claims (4)

1. A constant curvature anti-rotation mechanism of a steel bar straightening machine, comprising a frame (7), a left sprocket (8), a right sprocket (13), an intermediate wheel (12), a spring (9), a left drive shaft (10) and right transmission shaft (14), it is characterized in that: the left transmission shaft (10) of frame (7) and the lower straightening roller (2) that two roll diameters are identical are installed on the right transmission shaft (14), The upper straightening roller (5) is installed above the two lower straightening rollers (2), and the roller diameter of the upper straightening roller (5) is greater than the roller diameter of the two lower straightening rollers (2); the left drive shaft (10) One side of the front left side roller distance adjustment device (1) and the rear left side roller distance adjustment device (11), and one side of the right drive shaft (14) is provided with the front right side roller distance adjustment device (15) and the rear right side The roller distance adjusting device (6), and the upper straightening roller (5) is provided with a pressing adjusting device (4). 2. The equal-curvature anti-rotation mechanism of the steel bar straightening machine according to claim 1, characterized in that: a screw nut mechanism is used between the front right side roller distance adjustment device (15) and the front slider (18), and the front The sliding block (18) is connected with the rolling bearing (21) of the right drive shaft (14) by the end cover (20) with bolts, and the front right side roller distance adjustment device (15) is rotated so that the front sliding block (18) is on the front guide rail (19 ) moves up, and the front right roller distance adjustment device (15) is provided with the front locking device (24); the adjustment device (4) is pressed down to contact with the middle part of the upper straightening roller shaft (28), and the upper straightening roller shaft (28) ) Two springs (9) are arranged at both ends of the lower part, and the upper locking device (27) is arranged on the depressing adjustment device (4). 3. The equal curvature anti-rotation mechanism of the steel bar straightening machine according to claim 1 or 2, characterized in that: the left drive shaft (10) and the right drive shaft (14) are equipped with a left sprocket (8) and a right chain Wheel (13), left sprocket wheel (8) and right sprocket wheel (13) mesh with intermediate wheel (12), and the shaft end of right drive shaft (14) is installed power input sprocket wheel (17). 4. The equal-curvature anti-rotation mechanism of the steel bar straightening machine according to claim 1 or 2, characterized in that: the grooves (26) of the two lower straightening rollers (2) and the upper straightening roller (5) are the same , all have notch (16) in the type groove (26).

Images