A straightening mechanism for bolt bars

Abstract

This utility model relates to the field of bar straightening and discloses a straightening mechanism for bolt bars, including several first bearing seats, which are respectively disposed on the top surface of two bases. A first straightening shaft is rotatably inserted between two first bearing seats. Two fixed square tubes are fixed between the two bases, and an installation square tube is fixed between the two fixed square tubes. Several lifting plates are fixed on one side of each of the front bases and the installation square tubes. A lifting plate is slidably disposed inside each lifting plate. A threaded column is fixed on one side of each lifting plate. A sliding opening is opened on one side of each lifting plate. The threaded column is slidably inserted into the sliding opening. One end of the threaded column passes through the sliding opening and is threadedly connected to a nut. Two lifting rods are fixed on the top surface of each lifting plate. By adjusting the distance between the upper and lower straightening wheels, bars of different diameters can be used, increasing the applicability for straightening bent bars.

Description

Technical Field

[0001] This utility model relates to the technical field of bar straightening, specifically a straightening mechanism for bolt bars. Background Technology

[0002] Bolt bar straightening is a key metalworking process designed to eliminate plastic deformations such as bending and warping that occur during rolling, transportation, or storage, ensuring the bars meet specified straightness requirements. This is typically achieved by applying repeated bending or pressure to the bars using a specialized straightening machine, thus correcting the material's elastic-plastic properties.

[0003] According to Chinese Patent No. CN223171771U, a straightening fixture for processing metal bars includes a rectangular base plate, on which a straightening mechanism and a clamping mechanism are provided. Two support plates are fixedly connected to the top of the rectangular base plate, located on the front and rear sides of the rectangular base plate respectively. Several rotating shafts are rotatably passed through the rear support plate, and several rotating shafts are rotatably passed through the front support plate. Worm gears are fixedly connected to the sides of the rotating shafts and the rotating shafts that are away from the support plates.

[0004] The above solution still has the following drawbacks: the fixed spacing between two straightening rollers in a set can only straighten bars within a limited diameter range, which reduces the applicability of bar straightening. Utility Model Content

[0005] The purpose of this invention is to provide a straightening mechanism for bolt bars, which solves the problem that a fixed spacing between two straightening rollers can only straighten bars within a limited diameter range, thus reducing the applicability of bar straightening.

[0006] To achieve the above-mentioned utility model objectives, the present utility model adopts the following technical solution: a straightening mechanism for bolt bars, comprising a plurality of first bearing seats, the plurality of first bearing seats being respectively disposed on the top surface of two bases, wherein a first straightening shaft is rotatably inserted between two first bearing seats, two fixed square tubes are fixed between the two bases, and an installation square tube is fixed between the two fixed square tubes, a plurality of lifting baffles are fixed on one side of the front base and one side of the installation square tube, a lifting plate is slidably disposed inside the lifting baffle, a threaded column is fixed on one side of the lifting plate, a sliding opening is opened on one side of the lifting baffle, the threaded column is slidably inserted into the sliding opening, one end of the threaded column passes through the sliding opening and is threadedly connected to a nut, two lifting rods are fixed on the top surface of the lifting plate, the lifting rods are slidably inserted into the top surface of the lifting baffle, a second bearing seat is disposed on the top surface of the lifting baffle, the top end of the lifting rod is fixed to the bottom surface of the second bearing seat, a second straightening shaft is rotatably inserted between two second bearing seats, and straightening wheels are detachably disposed at both ends of the first straightening shaft and the second straightening shaft.

[0007] Preferably, two connecting square tubes are fixed between the two bases.

[0008] Preferably, the surface of the straightening wheel is provided with a positioning hole, and the surfaces of the first straightening shaft and the second straightening shaft are both provided with threaded grooves. A positioning bolt is inserted into the positioning hole, and the bottom end of the positioning bolt passes through the positioning hole and is threadedly connected to the threaded groove.

[0009] Preferably, the bottom surface of the fixed square tube is fixed with two supporting square tubes, a reinforcing square tube is fixed between the two supporting square tubes, and a shelf is fixed on one side of the two supporting square tubes on the left.

[0010] Preferably, an adjusting cylinder is fixed to the bottom end of the supporting square tube, an anti-slip pad is provided on the bottom surface of the adjusting cylinder, a lifting bolt is fixed to the top surface of the anti-slip pad, and the lifting bolt is threadedly connected to the bottom surface of the adjusting cylinder.

[0011] Preferably, a connecting plate is fixed to one side of the adjusting cylinder, a supporting folding plate is provided on one side of the connecting plate, a plurality of threaded holes are provided on one side of the connecting plate, an adjusting port is provided on one side of the supporting folding plate, an adjusting bolt is inserted into the adjusting port, one end of the adjusting bolt passes through the adjusting port and is threadedly connected to the threaded hole, and a fixing hole is provided on the top surface of the horizontal plane of the supporting folding plate.

[0012] Compared with the prior art, the bolt bar straightening mechanism that adopts the above technical solution has the following advantages: 1. By adjusting the distance between the upper and lower straightening rollers, bars of different diameters can be used, increasing the applicability when straightening bent bars; 2. When the surface curvature of the bar stock and the curvature of the straightening wheel groove are poorly matched, the workers will remove the positioning bolts in the threaded groove. Then, the workers can remove the current straightening wheel and replace it with a straightening wheel with a higher matching degree. The positioning bolts are then passed through the positioning holes and threaded into the inside of the threaded groove. By replacing the straightening wheels with different specifications, the matching degree between the surface of the bar stock and the inner wall of the straightening wheel groove is increased. 3. Depending on the ground conditions, the workers will rotate the anti-slip pad to drive the lifting bolts to rotate synchronously. The threaded connection between the lifting bolts and the bottom of the adjusting cylinder will push the adjusting cylinder upward, thereby adjusting the total height of the supporting square tubes. After adjusting the distance between the anti-slip pad and the adjusting cylinder, the workers will remove the adjusting bolts in the threaded holes and then adjust the height difference between the connecting plate and the supporting folding plate accordingly. This will allow the bottom of the supporting folding plate to be supported on the ground in conjunction with the anti-slip pad, enabling the four supporting square tubes to adapt to uneven ground and increasing the stability of the base on the ground. Attached Figure Description

[0013] Figure 1 This is a perspective view of an embodiment.

[0014] Figure 2 This is a breakdown diagram of an embodiment.

[0015] Figure 3 This is a schematic diagram of the lifting plate in an embodiment.

[0016] Figure 4 This is a schematic diagram of the connecting plate in an embodiment.

[0017] Figure 5 for Figure 2 A magnified schematic diagram of the local structure at point A in the middle.

[0018] In the diagram: 1. Base; 2. First bearing seat; 3. First straightening shaft; 4. Connecting square tube; 5. Fixed square tube; 6. Installing square tube; 7. Lifting folding plate; 8. Lifting plate; 9. Threaded column; 10. Sliding port; 11. Lifting rod; 12. Second bearing seat; 13. Second straightening shaft; 14. Straightening wheel; 15. Positioning hole; 16. Threaded groove; 17. Positioning bolt; 18. Supporting square tube; 19. Reinforcing square tube; 20. Shelf; 21. Adjusting cylinder; 22. Anti-slip pad; 23. Lifting bolt; 24. Connecting plate; 25. Supporting folding plate; 26. Threaded hole; 27. Adjusting port; 28. Adjusting bolt; 29. ​​Fixing hole. Detailed Implementation

[0019] The preferred embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0020] like Figures 1-3As shown, a straightening mechanism for bolt bars includes several first bearing seats 2, which are respectively disposed on the top surfaces of two bases 1. The mechanism is characterized in that a first straightening shaft 3 is rotatably inserted between two first bearing seats 2; two fixed square tubes 5 are fixed between the two bases 1; an installation square tube 6 is fixed between the two fixed square tubes 5; several lifting baffles 7 are fixed to one side of both the front base 1 and the installation square tube 6; a lifting plate 8 is slidably disposed inside the lifting baffle 7; a threaded post 9 is fixed to one side of the lifting plate 8; and a sliding opening 1 is provided on one side of the lifting baffle 7. 0. Threaded column 9 is slidably inserted into sliding port 10. One end of threaded column 9 passes through sliding port 10 and is threadedly connected to nut. Two lifting rods 11 are fixed on the top surface of lifting plate 8. Lifting rods 11 are slidably inserted into the top surface of lifting baffle plate 7. A second bearing seat 12 is provided on the top surface of lifting baffle plate 7. The top end of lifting rod 11 is fixed to the bottom surface of second bearing seat 12. A second straightening shaft 13 is rotatably inserted between the two second bearing seats 12. Straightening wheels 14 are detachably provided at both ends of the first straightening shaft 3 and the second straightening shaft 13. Two connecting square tubes 4 are fixed between the two bases 1.

[0021] In use, the operator first places the bent bar inside the groove of the straightening wheel 14. Then, the straightening wheel 14 rotates synchronously under the rotation of the first straightening shaft 3 and the second straightening shaft 13, which causes the bar to slide inside the groove of the multiple straightening wheels 14. When the bar moves to the bottom of the second straightening shaft 13, the straightening wheels 14 installed at both ends of the second straightening shaft 13 will cooperate with the straightening wheels 14 installed at both ends of the first straightening shaft 3 to apply a straightening and squeezing force to the bent bar, thus straightening the bent bar. Depending on the diameter of the bar, the operator first removes the nut on the threaded column 9. Then, the operator applies an upward force to the second bearing seat 12, causing the lifting rod 11 and the second bearing seat 12 to slide upward on the top surface of the lifting baffle 7, thereby adjusting the distance between the first straightening shaft 3 and the second straightening shaft 13, and thus adjusting the distance between the two straightening wheels 14. Finally, the operator reconnects the nut to the threaded column 9 and squeezes it on one side of the lifting baffle 7. By adjusting the spacing between the upper and lower straightening rollers 14, rods of different diameters can be used, increasing the applicability when straightening bent rods.

[0022] like Figure 2 and Figure 5As shown, the surface of the straightening wheel 14 is provided with a positioning hole 15, and the surfaces of the first straightening shaft 3 and the second straightening shaft 13 are both provided with threaded grooves 16. A positioning bolt 17 is inserted into the positioning hole 15, and the bottom end of the positioning bolt 17 passes through the positioning hole 15 and is threadedly connected to the threaded groove 16. Two supporting square tubes 18 are fixed to the bottom surface of the fixed square tube 5, and a reinforcing square tube 19 is fixed between the two supporting square tubes 18. A shelf 20 is fixed to one side of the two supporting square tubes 18 on the left side.

[0023] In use, when the surface curvature of the bar stock and the curvature of the groove of the straightening wheel 14 are poorly matched, the operator will remove the positioning bolt 17 in the threaded groove 16. Then the operator can remove the current straightening wheel 14 and replace it with a straightening wheel 14 with a higher matching degree. The positioning bolt 17 is then passed through the positioning hole 15 and threaded into the inside of the threaded groove 16. By replacing the straightening wheel 14 with a different specification, the matching degree between the surface of the bar stock and the inner wall of the groove of the straightening wheel 14 is increased.

[0024] like Figure 2 and Figure 4 As shown, an adjusting cylinder 21 is fixed to the bottom end of the supporting square tube 18. An anti-slip pad 22 is provided on the bottom surface of the adjusting cylinder 21. A lifting bolt 23 is fixed to the top surface of the anti-slip pad 22. The lifting bolt 23 is threadedly connected to the bottom surface of the adjusting cylinder 21. A connecting plate 24 is fixed to one side of the adjusting cylinder 21. A supporting folding plate 25 is provided on one side of the connecting plate 24. Several threaded holes 26 are opened on one side of the connecting plate 24. An adjusting port 27 is opened on one side of the supporting folding plate 25. An adjusting bolt 28 is inserted into the adjusting port 27. One end of the adjusting bolt 28 passes through the adjusting port 27 and is threadedly connected to the threaded hole 26. A fixing hole 29 is opened on the top surface of the horizontal plane of the supporting folding plate 25.

[0025] During use, depending on the ground conditions, the operator will rotate the anti-slip pad 22 to drive the lifting bolt 23 to rotate synchronously. The threaded connection between the lifting bolt 23 and the bottom of the adjusting cylinder 21 will push the adjusting cylinder 21 to move upward, thereby adjusting the total height of the supporting square tube 18. After adjusting the distance between the anti-slip pad 22 and the adjusting cylinder 21, the operator will remove the adjusting bolt 28 in the threaded hole 26 and then adjust the height difference between the connecting plate 24 and the supporting folding plate 25 accordingly. This will allow the bottom surface of the supporting folding plate 25 to cooperate with the anti-slip pad 22 to support the ground, so that the four supporting square tubes 18 can adapt to uneven ground and increase the stability of the base 1 on the ground.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A bolt bar straightening mechanism, comprising a plurality of first bearing seats (2), wherein the plurality of first bearing seats (2) are respectively disposed on the top surface of two bases (1), characterized in that, A first straightening shaft (3) is rotatably inserted between two of the first bearing seats (2). Two fixed square tubes (5) are fixed between the two bases (1). An installation square tube (6) is fixed between the two fixed square tubes (5). Several lifting plates (7) are fixed on one side of the front base (1) and the installation square tube (6). A lifting plate (8) is slidably arranged inside the lifting plate (7). A threaded column (9) is fixed on one side of the lifting plate (8). A sliding opening (10) is opened on one side of the lifting plate (7). The threaded column (9) and the sliding opening (10) are slidably inserted. One end of the threaded column (9) passes through the sliding port (10) and is threadedly connected to a nut. Two lifting rods (11) are fixed on the top surface of the lifting plate (8). The lifting rods (11) are slidably inserted into the top surface of the lifting baffle (7). A second bearing seat (12) is provided on the top surface of the lifting baffle (7). The top end of the lifting rod (11) is fixed to the bottom surface of the second bearing seat (12). A second straightening shaft (13) is rotatably inserted between the two second bearing seats (12). Straightening wheels (14) are detachably provided at both ends of the first straightening shaft (3) and the second straightening shaft (13).

2. The bolt bar straightening mechanism according to claim 1, characterized in that: Two connecting square tubes (4) are fixed between the two bases (1).

3. The bolt bar straightening mechanism according to claim 1, characterized in that: The surface of the straightening wheel (14) is provided with a positioning hole (15), and the surfaces of the first straightening shaft (3) and the second straightening shaft (13) are provided with threaded grooves (16). A positioning bolt (17) is inserted into the positioning hole (15), and the bottom end of the positioning bolt (17) passes through the positioning hole (15) and is threadedly connected to the threaded groove (16).

4. The bolt bar straightening mechanism according to claim 1, characterized in that: The bottom surface of the fixed square tube (5) is fixed with two supporting square tubes (18), and a reinforcing square tube (19) is fixed between the two supporting square tubes (18). A shelf (20) is fixed on one side of the two supporting square tubes (18) on the left.

5. The bolt bar straightening mechanism according to claim 4, characterized in that: An adjusting cylinder (21) is fixed at the bottom end of the supporting square tube (18). An anti-slip pad (22) is provided on the bottom surface of the adjusting cylinder (21). A lifting bolt (23) is fixed on the top surface of the anti-slip pad (22). The lifting bolt (23) is threadedly connected to the bottom surface of the adjusting cylinder (21).

6. The bolt bar straightening mechanism according to claim 5, characterized in that: A connecting plate (24) is fixed on one side of the adjusting cylinder (21). A supporting folding plate (25) is provided on one side of the connecting plate (24). Several threaded holes (26) are opened on one side of the connecting plate (24). An adjusting port (27) is opened on one side of the supporting folding plate (25). An adjusting bolt (28) is inserted into the adjusting port (27). One end of the adjusting bolt (28) passes through the adjusting port (27) and is threadedly connected to the threaded hole (26). A fixing hole (29) is opened on the top surface of the horizontal plane of the supporting folding plate (25).

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