Height adjusting mechanism for compression roller of cold bending machine

Abstract

The utility model discloses a height adjusting mechanism for a compression roller of a cold bending machine, which relates to the technical field of cold bending machines and comprises a fixing part, the top wall and the bottom wall of an inner cavity of the fixing part are both fixedly connected with a shell, the inner side wall of the shell is provided with a sliding groove, the inner side wall of the sliding groove is slidably connected with a sliding block, and the side wall of the sliding block is fixedly connected with a lifting plate. A movable part is fixedly connected between the lifting plates, the movable part is in sliding connection with the inner side wall of the fixed part, the side wall of the movable part is rotationally connected with a pressing roller shaft, and a transmission mechanism used for jacking the lifting plates is arranged in the shell; the lifting operation of the movable part is simple and convenient, the whole transmission mechanism has a self-locking characteristic, the movable part can be stably kept at the current position and cannot move or reverse accidentally when driving is stopped, the lifting stability of the compression roller is guaranteed, the adjustment operation is simple and convenient, and the use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of cold bending machines, in particular to a pressure roller height adjustment mechanism for a cold bending machine. Background Art

[0002] The main function of an I-beam cold bending machine is to cold-bend various types of steel to a specific curvature radius according to construction requirements without altering the internal stress of the steel. This achieves the desired bending deformation without compromising the steel's mechanical properties and strength, significantly reducing labor intensity and labor costs while improving efficiency and precision. This machine has become a specialized tool for processing steel arches in tunnel construction. Steel arches processed by I-beam cold bending machines are widely used in railway, highway, and hydraulic tunnel construction, as well as in bridges, large industrial plants, and other projects. They feature high bending dimensional accuracy, minimal distortion, and a smooth, uniform curvature. However, existing I-beam cold bending machines, when used for I-beams of varying heights, require cumbersome height adjustment of the upper limit rollers on the gantry. This adjustment is accomplished using a cross-shaped sliding groove, which is vertically adjustable, resulting in poor adjustment precision and stability.

[0003] Therefore, those skilled in the art provide a cold bending machine pressure roller height adjustment mechanism to solve the problems raised in the above background technology. Utility Model Content

[0004] The purpose of the utility model is to provide a cold bending machine pressure roller height adjustment mechanism to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A cold bending machine pressure roller height adjustment mechanism includes a fixing part, the top wall and the bottom wall of the inner cavity of the fixing part are fixedly connected to a shell, the inner side wall of the shell is provided with a slide groove, the inner side wall of the slide groove is slidably connected to a slider, the side wall of the slider is fixedly connected to a lifting plate, a movable part is fixedly connected between the lifting plates, the movable part is slidably connected to the inner side wall of the fixing part, the side wall of the movable part is rotatably connected to the pressure roller shaft, and a transmission mechanism for lifting the lifting plate is provided inside the shell.

[0007] As a further solution of the present invention: the transmission mechanism includes a bidirectional screw, a screw sleeve, a movable block, a lower hinge, a connecting rod and an upper hinge. The inner side walls of the shell are rotatably connected to the bidirectional screw, and the threads of the two bidirectional screws are arranged in opposite directions. Both ends of the bidirectional screw are threadedly connected to the screw sleeve, and the movable block is fixedly connected to the surface of the screw sleeve.

[0008] As a further solution of the present invention: a first hinged part is fixedly connected to the surface of the movable block.

[0009] As a further solution of the present invention: a second hinged component is fixedly connected to the surface of the lifting plate, and a connecting rod is hinged between the first hinged component and the second hinged component.

[0010] As a further solution of the present invention: the side wall of the fixing member is rotatably connected to two sets of synchronous pulleys, and the synchronous pulleys are respectively fixedly connected to the shaft ends of the two bidirectional screws.

[0011] As a further solution of the present invention: a timing belt is provided between the synchronous pulleys.

[0012] As a further solution of the present invention: a servo motor is fixedly connected to the side wall of the fixing member, and a power output end of the servo motor is fixedly connected to the shaft end of the bidirectional screw.

[0013] Compared with the prior art, the beneficial effects of the present invention are:

[0014] When the servo motor is running, the power output end of the servo motor rotates to drive the bidirectional screw to rotate, and the rotation of the bidirectional screw drives the screw sleeve to move, and the movement of the screw sleeve drives the movable block to move, and the movement of the movable block drives the first hinge to move, and the movement of the first hinge drives the connecting rod to rotate. The rotation of the connecting rod lifts the lifting plate. At the same time, the rotation of the bidirectional screw drives the synchronous pulley to rotate, and the rotation of the synchronous pulley drives the other synchronous pulley to rotate under the action of the timing belt, thereby realizing the rotation of the other bidirectional screw, so that the two lifting plates rise and fall, namely, the lifting and lowering of the movable part is realized. Due to the existence of friction, the bidirectional screw is difficult to be pushed to rotate when it is not driven. In this case, the entire transmission mechanism will have a self-locking feature, ensuring that when the drive stops, the movable part can stably maintain the current position and will not move or reverse inadvertently, thereby ensuring the stability of the pressure roller lifting and lowering. The adjustment operation is simple and convenient, and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of a cold bending machine pressure roller height adjustment mechanism.

[0016] Figure 2 This is a schematic diagram of the planar structure of a cold bending machine pressure roller height adjustment mechanism.

[0017] Figure 3 A cold bending machine roller height adjustment mechanism Figure 2 Enlarged view of point A in the middle.

[0018] In the figure: 1. Fixed part; 2. Movable part; 3. Pressure roller shaft; 4. Housing; 5. Slide groove; 6. Slider; 7. Lifting plate; 8. Bidirectional screw; 9. Screw sleeve; 10. Movable block; 11. First hinge; 12. Connecting rod; 13. Second hinge; 14. Servo motor; 15. Synchronous pulley; 16. Timing belt. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example 1

[0020] Reference Figure 1-3 , This embodiment provides a cold bending machine pressure roller height adjustment mechanism, including a fixing part 1, the inner cavity top wall and the inner cavity bottom wall of the fixing part 1 are fixedly connected to a shell 4, the inner side wall of the shell 4 is provided with a slide groove 5, the inner side wall of the slide groove 5 is slidably connected to a slider 6, the side wall of the slider 6 is fixedly connected to a lifting plate 7, a movable part 2 is fixedly connected between the lifting plates 7, the movable part 2 is slidably connected to the inner side wall of the fixing part 1, the side wall of the movable part 2 is rotatably connected to the pressure roller shaft 3, and a transmission mechanism for lifting the lifting plate 7 is provided inside the shell 4, the transmission mechanism includes a bidirectional screw rod 8, a screw rod sleeve 9, a movable block 10, a lower The hinge, connecting rod 12 and upper hinge, the inner side wall of the shell 4 are rotatably connected with a bidirectional screw 8, and the threads of the two bidirectional screws 8 are oppositely arranged, and both ends of the bidirectional screw 8 are threadedly connected with a screw sleeve 9, the surface of the screw sleeve 9 is fixedly connected with a movable block 10, the surface of the movable block 10 is fixedly connected with a first hinge 11, the surface of the lifting plate 7 is fixedly connected with a second hinge 13, and a connecting rod 12 is hinged between the first hinge 11 and the second hinge 13, the side wall of the fixed part 1 is rotatably connected with two sets of synchronous pulleys 15, and the synchronous pulleys 15 are respectively fixedly connected to the shaft ends of the two bidirectional screws 8, A timing belt 16 is provided between the step pulleys 15, and a servo motor 14 is fixedly connected to the side wall of the fixing member 1, and the power output end of the servo motor 14 is fixedly connected to the shaft end of the bidirectional screw 8; when the servo motor 14 is running, the power output end of the servo motor 14 rotates to drive the bidirectional screw 8 to rotate, and the rotation of the bidirectional screw 8 drives the screw sleeve 9 to move, and the movement of the screw sleeve 9 drives the movable block 10 to move, and the movement of the movable block 10 drives the first hinge 11 to move, and the movement of the first hinge 11 drives the connecting rod 12 to rotate, and the rotation of the connecting rod 12 causes the lifting plate 7 to be lifted. At the same time, the rotation of the bidirectional screw 8 drives the synchronous The pulley 15 rotates, and the rotation of the synchronous pulley 15 drives the other synchronous pulley 15 to rotate under the action of the timing belt 16, that is, the rotation of the other bidirectional screw rod 8 is realized, so that the two lifting plates 7 rise and fall, that is, the lifting and lowering of the movable part 2 is realized. Due to the existence of friction, the bidirectional screw rod 8 is difficult to be pushed to rotate when it is not driven. In this case, the entire transmission mechanism will have a self-locking feature, ensuring that when the drive stops, the movable part 2 can stably maintain the current position and will not move or reverse inadvertently, thereby ensuring the stability of the lifting and lowering of the pressure roller. The adjustment operation is simple and convenient, and easy to use.

[0021] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0022] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A cold bending machine roller height adjustment mechanism, characterized in that: The invention comprises a fixing member (1), wherein the inner cavity top wall and the inner cavity bottom wall of the fixing member (1) are fixedly connected to a shell (4), the inner side wall of the shell (4) is provided with a slide groove (5), the inner side wall of the slide groove (5) is slidably connected to a slider (6), the side wall of the slider (6) is fixedly connected to a lifting plate (7), a movable member (2) is fixedly connected between the lifting plates (7), the movable member (2) is slidably connected to the inner side wall of the fixing member (1), the side wall of the movable member (2) is rotatably connected to a pressure roller shaft (3), and a transmission mechanism for lifting the lifting plate (7) is provided inside the shell (4).

2. A cold bending machine pressure roller height adjustment mechanism according to claim 1, characterized in that: The transmission mechanism comprises a bidirectional screw (8), a screw sleeve (9), a movable block (10), a lower hinge, a connecting rod (12) and an upper hinge. The inner side wall of the housing (4) is rotatably connected to the bidirectional screw (8), and the threads of the two bidirectional screws (8) are arranged in opposite directions. Both ends of the bidirectional screw (8) are threadedly connected to the screw sleeve (9), and the surface of the screw sleeve (9) is fixedly connected to the movable block (10).

3. The cold bending machine pressure roller height adjustment mechanism according to claim 2, characterized in that: A first hinged member (11) is fixedly connected to the surface of the movable block (10).

4. The cold bending machine roller height adjustment mechanism according to claim 1, characterized in that: A second hinged member (13) is fixedly connected to the surface of the lifting plate (7), and a connecting rod (12) is hinged between the first hinged member (11) and the second hinged member (13).

5. The cold bending machine pressure roller height adjustment mechanism according to claim 1, characterized in that: The side wall of the fixing member (1) is rotatably connected to two sets of synchronous pulleys (15), and the synchronous pulleys (15) are respectively fixedly connected to the shaft ends of the two bidirectional screw rods (8).

6. A cold bending machine pressure roller height adjustment mechanism according to claim 5, characterized in that: A timing belt (16) is provided between the synchronous pulleys (15).

7. The cold bending machine roller height adjustment mechanism according to claim 1, characterized in that: The side wall of the fixing member (1) is fixedly connected to a servo motor (14), and the power output end of the servo motor (14) is fixedly connected to the shaft end of the bidirectional screw rod (8).

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