Wedge-shaped lifting mechanism for roller seat of lower straightening roller of metal tube and bar inclined roller straightening machine

Abstract

The utility model belongs to the technical field of metallurgical tube and bar straightening machine equipment, and mainly relates to a wedge-shaped lifting mechanism for a lower straightening roll seat of a metal tube and bar inclined roll straightening machine. A roller seat for supporting the lower straightening roller is arranged corresponding to the lower straightening roller; a base is fixed at the lower part of the roller seat; the bottom surface of the base is two symmetrical inclined surfaces, and a tapered wedge I and a tapered wedge II are correspondingly arranged on the two inclined surfaces respectively; the lower parts of the tapered wedge I and the tapered wedge II are both in threaded connection with the right-hand and left-hand threaded screw rod, and the tapered wedge I and the tapered wedge II are combined together to be located in a slide way of the lower rack; one end of the right-hand and left-hand thread lead screw is matched with a transmission shaft to form a structure that the transmission shaft drives the right-hand and left-hand thread lead screw to rotate so as to enable the wedge I and the wedge II to move towards each other or away from each other, and the wedge I and the wedge II drive the base and drive the roller seat and the lower straightening roller to ascend and descend. The lifting device solves the problem that after a straightening machine is used for a long time, the lead screw nut for adjusting lifting on the roller seat of the lower roller of the straightening roller is blocked.

Description

Technical Field

[0001] This utility model belongs to the technical field of metallurgical tube and bar straightening machine equipment, and mainly relates to a wedge-shaped lifting mechanism for the lower straightening roller seat of a metal tube and bar inclined roller straightening machine. Background Technology

[0002] like Figure 1 As shown, in conventional skew roller straighteners for tubes and bars, the roller seat 4 of the lower straightening roller 7 is driven by a lead screw 2 rotating to push a copper nut 3, causing the roller seat 4 of the straightening roller on the lower frame 5 of the straightener to move up and down. The rotation of the lead screw 2 is driven by a reducer fixed on the lower frame 5. After long-term use of the equipment, this structure is prone to jamming of the upper lead screw 2 and the nut 3, which seriously affects the adjustment effect. This is especially true for large tube and bar straighteners, where jamming is more likely to occur due to the particularly large straightening force. In addition, the copper nut has limited bearing capacity and is insufficient to withstand the straightening force generated by large tubes and bars. Utility Model Content

[0003] To address the aforementioned problems, the purpose of this utility model is to propose a wedge-shaped lifting mechanism for the lower straightening roller seat of a metal tube and bar inclined roller straightener. By setting a base and correspondingly setting two wedge-shaped blocks on the base, the movement of the two wedge-shaped blocks drives the base, the roller seat on the base, and the lower straightening roller to move, thereby realizing the lifting and lowering of the lower straightening roller and avoiding the jamming phenomenon in the prior art.

[0004] To achieve the above objectives, this utility model employs the following technical solution:

[0005] A wedge-shaped lifting mechanism for the lower straightening roller seat of a metal tube and bar skew roller straightener is disclosed. A roller seat is provided to support the lower straightening roller. A base is fixed to the lower part of the roller seat. The bottom surface of the base consists of two symmetrical inclined surfaces, with wedge I and wedge II respectively provided on each of the two inclined surfaces. The lower parts of wedge I and wedge II are threadedly connected to a screw rod with opposing threads, and wedge I and wedge II are combined and seated in a slide rail of the lower frame. One end of the screw rod is engaged with a drive shaft, forming a structure where the drive shaft drives the screw rod to rotate, thereby causing wedge I and wedge II to move towards or away from each other. Wedge I and wedge II drive the base, and in turn, lift the roller seat and the lower straightening roller.

[0006] The wedges I and II are respectively provided with positive threads and negative threads that cooperate with the positive and negative threaded screws.

[0007] A sliding copper sleeve is provided between the base and the lower frame of the straightening machine.

[0008] This utility model proposes a wedge-shaped lifting mechanism for the lower straightening roller seat of a metal tube and bar inclined roller straightener. The mechanism uses a positive and negative threaded screw to drive two inclined wedges to move horizontally axially, thereby realizing the lifting and lowering of the lower straightening roller seat. The straightening force borne by the lower straightening roller seat is transmitted to the lower frame machine through the two inclined wedges, which solves the problem of jamming of the screw nut for adjusting the lifting and lowering of the lower straightening roller seat after long-term use of the straightener. Attached Figure Description

[0009] Figure 1 This is a schematic diagram of adjusting the lifting and lowering of the straightening roller seat using the lead screw nut of a previous straightening machine.

[0010] Figure 2 This is a schematic diagram of the structure of this utility model.

[0011] In the diagram: 1. Reducer, 2. Adjusting screw, 3. Adjusting nut, 4. Roller seat, 5. Lower frame, 6. Locking cylinder, 7. Lower straightening roller, 8. Positive and negative threaded screw, 9. Wedge I, 10. Wedge II, 11. Base, 12. Drive shaft. Detailed Implementation

[0012] The present invention will be described in conjunction with the accompanying drawings and specific embodiments:

[0013] like Figure 1 As shown, a wedge-shaped lifting mechanism for the lower straightening roller seat of a metal tube and bar skew roller straightener is provided. A roller seat 4 is provided to support the lower straightening roller. A base 11 is fixed to the lower part of the roller seat 1. The bottom surface of the base 11 is two symmetrical inclined surfaces. An inclined wedge I 9 and an inclined wedge II 10 are respectively provided on the two inclined surfaces 11. The lower parts of the inclined wedge I 9 and the inclined wedge II 10 are threadedly connected to the positive and negative threaded screws 8, and the inclined wedge I 9 and the inclined wedge II 10 are combined and placed in the slide of the lower frame 2. One end of the positive and negative threaded screw 1 is engaged with the transmission shaft 12, which forms a structure in which the transmission shaft 12 drives the positive and negative threaded screw 1 to rotate, thereby causing the inclined wedge I 9 and the inclined wedge II 10 to move towards or away from each other. The inclined wedge I 9 and the inclined wedge II 10 drive the base 11 and drive the roller seat 4 and the lower straightening roller 7 to rise and fall.

[0014] The wedges I9 and II10 are respectively provided with positive threads and negative threads that cooperate with the positive and negative threaded screws.

[0015] A sliding copper sleeve is provided between the base 11 and the lower frame 5 of the straightening machine.

[0016] One end of the positive and negative threaded screw 8 is provided with an internal hexagonal hole, which cooperates with the external hexagonal shaft on the transmission shaft 12. The external hexagonal shaft on the transmission shaft 12 drives the positive and negative threaded screw 8 to rotate. The rotation of the positive and negative threaded screw 8 causes the wedge I 9 and wedge II 10 to move axially and horizontally symmetrically in the slide of the lower frame 8. The axial horizontal symmetrical movement of the wedge I 9 and wedge II 10 pushes the base 11 to move up and down. The base can only move up and down under the constraint of the inner hole of the cylinder of the lower frame, thereby realizing the up and down lifting of the lower roller seat of the straightening machine sitting on the upper part of the platform.

Claims

1. A wedge-shaped lifting mechanism for the lower straightening roller seat of a metal tube and bar skew roller straightener, wherein a roller seat is provided corresponding to the lower straightening roller to support it; characterized in that: The lower part of the roller seat is fixed with a base; the bottom surface of the base is two symmetrical inclined surfaces, and wedge I and wedge II are respectively provided on the two inclined surfaces; the lower parts of wedge I and wedge II are threadedly connected to the positive and negative threaded screws, and wedge I and wedge II are combined and placed in the slide of the lower frame; one end of the positive and negative threaded screws is engaged with the drive shaft, which constitutes the structure in which the drive shaft drives the positive and negative threaded screws to rotate, thereby causing wedge I and wedge II to move towards or away from each other. Wedge I and wedge II drive the base and drive the roller seat and the lower straightening roller to rise and fall.

2. The wedge-shaped lifting mechanism for the lower straightening roller seat of a metal tube / bar skew roller straightener as described in claim 1, characterized in that: The wedges I and II are respectively provided with positive threads and negative threads that cooperate with the positive and negative threaded screws.

3. The wedge-shaped lifting mechanism for the lower straightening roller seat of a metal tube and bar skew roller straightener as described in claim 1, characterized in that: A sliding copper sleeve is provided between the base and the lower frame of the straightening machine.

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