Rotatable positioning device for cylindrical steel machining

Abstract

The utility model relates to the field of steel structure processing, in particular to a rotatable positioning device for cylindrical steel processing, which comprises a base, positioning structures are symmetrically mounted on two sides of the top of the base, each positioning structure comprises mounting plates fixedly mounted on two sides of the base, and a first guide plate is mounted on the top of the base and positioned between the two mounting plates. According to the rotatable positioning device for cylindrical steel machining, more accurate positioning and stable supporting are achieved through a self-adaptive multi-wheel positioning supporting and slope transmission structure, rolling friction is used for assisting flexible rotation of cylindrical steel, multi-angle machining is facilitated, the machining precision is improved, and the machining efficiency is improved. And through single driving source control, operation is more convenient, adjustment is faster, and the device can adapt to cylindrical steel of different specifications.

Description

Technical Field

[0001] This utility model relates to the field of steel structure processing technology, specifically a rotatable positioning device for processing cylindrical steel. Background Technology

[0002] Cylindrical steel is a common steel structure material, widely used in machinery manufacturing, construction, aerospace, and other fields. During production, positioning devices are typically used to hold the cylindrical steel in place before painting or drilling. Traditional processing methods have several drawbacks. Firstly, manually positioning the cylindrical steel is not only labor-intensive but also heavily reliant on worker experience, making consistency difficult to guarantee. Secondly, existing simple positioning devices are often limited in function. Many devices can only fix the cylindrical steel in place, failing to meet the need for rotation during processing, thus restricting operations. For example, some traditional positioning devices can only fix the cylindrical steel in one position; when performing multi-directional machining of the cylindrical surface, repeated disassembly and reassembly of the cylindrical steel are required, significantly reducing processing efficiency. Summary of the Invention

[0003] The main purpose of this utility model is to solve the problem of low production efficiency in existing products and to provide a rotatable positioning device for processing cylindrical steel.

[0004] The specific solution of this utility model is as follows: a rotatable positioning device for processing cylindrical steel, comprising a base, with positioning structures symmetrically installed on both sides of the top of the base. Each positioning structure includes mounting plates fixedly installed on both sides of the base. A first guide plate is installed on the top of the base, positioned between the two mounting plates. A first dovetail groove is formed at the top of the first guide plate, and a first slider is slidably installed within the first dovetail groove. A driving block is provided at the top of the first slider, and a first inclined surface is provided at the top of the driving block. A lifting structure is installed on one side of the driving block. The lifting structure includes a second guide plate fixed to the top of the base, a second dovetail groove formed on the surface of the second guide plate, and a second slider slidably installed within the second dovetail groove. A lifting block is fixedly connected to the end of the second slider away from the wall of the second dovetail groove, and the lifting block is located above the driving block. A lifting block is provided at the bottom of the lifting block. A second inclined plane parallel to the first inclined plane continuously pushes the lifting block upward as the driving block moves along the first dovetail groove. The lifting block has two third inclined planes symmetrically arranged on both sides. A support member is installed at the top of the lifting block, and a support wheel is rotatably mounted on the top of the support member to support the bottom of the steel pipe. Auxiliary clamping structures are installed on both sides of the lifting block. Each auxiliary clamping structure includes two fixed plates respectively mounted on the surface of the mounting plate. Arc-shaped connecting rods are hinged to the fixed plates. A first guide wheel is rotatably mounted at the top of the arc-shaped connecting rod, and a second guide wheel is mounted at the other end. A tension spring connects the bottom surfaces of the two arc-shaped connecting rods, causing the two second guide wheels to contact the third inclined planes respectively. A driving structure is installed at one end of the driving block to drive the driving block to move along the first dovetail groove.

[0005] According to the above technical solution, when the driving block moves along the first dovetail groove to push the lifting block upward, the change in the height of the lifting block will cause a corresponding change in the height of the support wheel. At the same time, the positions of the first guide wheel and the second guide wheel of the auxiliary clamping structure will also be adaptively adjusted due to the action of the third inclined surface of the lifting block. This allows the device to automatically adapt to cylindrical steel of different diameters and always maintain precise positioning of the cylindrical steel.

[0006] Furthermore, the drive structure includes a cylinder, with the cylinder drive end passing through one of the mounting plates and connected to the end of the drive block away from the first inclined surface.

[0007] According to the above technical solution, by using a cylinder as the driving source, the operator only needs to control the intake and exhaust of the cylinder to drive the drive block to move along the first dovetail groove.

[0008] Furthermore, the arc-shaped connecting rod is hinged to the fixed plate at its arc-shaped inflection point, which improves the stability of the arc-shaped connecting rod during rotation.

[0009] According to the above technical solution, the arc-shaped inflection point of the arc-shaped connecting rod is a key part of the structure. It can make the force evenly distributed in various parts when the arc-shaped connecting rod rotates, preventing stress concentration. The arc-shaped connecting rod will be more stable during rotation, reducing swaying and swinging, and improving the stability of the entire auxiliary clamping structure.

[0010] Furthermore, the support member has a U-shaped structure, and a support wheel is rotatably installed inside the U-shaped opening. The support wheel, the first guide wheel, and the second guide wheel rotate in the direction of rotation toward the mounting plates on both sides.

[0011] According to the above technical solution, by fixing the rotation direction of the support wheel, the first guide wheel, and the second guide wheel and aligning them towards the mounting plates on both sides, the device can adapt to cylindrical steel of different diameters. Regardless of the diameter of the cylindrical steel, it can effectively support and position the cylindrical steel through its own rotation and adjustment of relative position, thus improving the versatility and applicability of the device.

[0012] Compared with the prior art, the present invention has the following advantages: the rotatable positioning device for processing cylindrical steel achieves more precise positioning and stable support through adaptive multi-wheel positioning support and inclined plane transmission structure. The rolling friction assists the cylindrical steel to rotate flexibly, which is convenient for multi-angle processing. Moreover, the single drive source control makes it easier to operate and adjust faster, and it can be adapted to cylindrical steel of different specifications. Attached Figure Description

[0013] Figure 1 This is a three-dimensional schematic diagram of the present invention;

[0014] Figure 2 yes Figure 1 The left view;

[0015] Figure 3 yes Figure 1 Front view section

[0016] Figure 4 yes Figure 3 Enlarged view of the structure at point A;

[0017] In the diagram: 1. Base; 2. Mounting plate; 3. First guide plate; 4. First dovetail groove; 5. First slider; 6. Drive block; 7. First inclined plane; 8. Second guide plate; 9. Second dovetail groove; 10. Second slider; 11. Lifting block; 12. Second inclined plane; 13. Third inclined plane; 14. Support component; 15. Support wheel; 16. Fixing plate; 17. Arc-shaped connecting rod; 18. First guide wheel; 19. Second guide wheel; 20. Tension spring; 21. Cylinder. Detailed Implementation

[0018] See Figure 1-4This embodiment is a rotatable positioning device for processing cylindrical steel. A base 1 is used to install positioning structures. Positioning structures are symmetrically installed on both sides of the top of the base 1. Each positioning structure includes mounting plates 2 welded to both sides of the top of the base 1. A first guide plate 3 is welded to the top of the base 1, located between the two mounting plates 2. A first dovetail groove 4 is formed on the top surface of the first guide plate 3. A first slider 5 is slidably installed within the first dovetail groove 4. A driving block 6 is integrally formed on the top of the first slider 5. A first inclined surface 7 is provided on the top of the driving block 6. A lifting structure is installed on one side of the driving block 6. The lifting structure includes a second guide plate 8 welded to the top of the base 1. The second guide plate 8 is located on one side of the mounting plate 2. A second dovetail groove 9 is formed on the side of the second guide plate 8 closest to the driving block 6. A second slider 10 is slidably installed within the second dovetail groove 9. A lifting block 11 is fixedly connected to the end of the second slider 10 away from the groove wall of the second dovetail groove 9. The lifting block 11 is integrally formed with the second slider 10, and the lifting block 11 is located directly above the driving block 6. The bottom of the lifting block 11 has a first inclined surface 7. The second inclined surface 12 is parallel to the inclined surface 7. When the driving block 6 moves along the first dovetail groove 4, it continuously pushes the second inclined surface 12 at the bottom of the lifting block 11 through the first inclined surface 7, causing the lifting block 11 to move upward. The two sides of the lifting block 11 are provided with third inclined surfaces 13, and the two third inclined surfaces 13 are symmetrically arranged on both sides of the lifting block 11. A support member 14 is installed on the top of the lifting block 11, and a support wheel 15 is rotatably installed on the top of the support member 14. The support wheel 15 is used to support the bottom of the cylindrical steel. Auxiliary clamping structures are installed on both sides of the lifting block 11. The auxiliary clamping structure includes two fixed plates 16 respectively mounted on the surfaces of the mounting plates 2 on both sides. An arc-shaped connecting rod 17 is hinged to the fixed plate 16. A first guide wheel 18 is rotatably mounted on the top end of the arc-shaped connecting rod 17, and a second guide wheel 19 is mounted on the other end. A tension spring 20 is fixedly connected between the bottom surfaces of the two arc-shaped connecting rods 17, so that the two second guide wheels 19 contact the third inclined surfaces 13 on both sides of the lifting block 11 respectively. A driving structure is mounted on one end of the driving block 6. The driving structure is used to drive the driving block 6 to move along the first dovetail groove 4.

[0019] Furthermore, the drive structure includes a cylinder 21, the drive end of which passes through one of the mounting plates 2 and is connected to the end of the drive block 6 away from the first inclined surface 7, thereby achieving the effect of driving the drive block 6 to move.

[0020] Furthermore, the arc-shaped connecting rod 17 is hinged to the fixed plate 16 at the arc-shaped inflection point, which improves the stability of the arc-shaped connecting rod 17 during rotation.

[0021] Furthermore, the support member 14 has a U-shaped structure, and a support wheel 15 is rotatably installed inside the U-shaped opening. The support wheel 15, the first guide wheel 18, and the second guide wheel 19 rotate in the direction of the mounting plates 2 on both sides, thereby achieving the effect of assisting the rotation of the cylindrical steel.

[0022] The working principle of this embodiment is as follows: In use, the cylinder 21 is first started. The piston rod of the cylinder 21 extends and retracts, driving the drive block 6 to move along the first dovetail groove 4 of the first guide plate 3. The first inclined surface 7 at the top of the drive block 6 pushes the second inclined surface 12 parallel to the bottom of the lifting block 11. Because the lifting block 11 is installed in the second dovetail groove 9 of the second guide plate 8 through the second slider 10, its horizontal movement is restricted. When the lifting block 11 moves upward, it drives the top support 14 and the support wheel 15 rotatably installed on it to rise until the support wheel 15 supports the bottom of the cylindrical steel. In the auxiliary clamping structure, the fixing plate 16 is installed on the mounting plate 2, and the two ends of the arc-shaped connecting rod 17 hinged on it are The first guide wheel 18 and the second guide wheel 19 are respectively installed. The tension spring 20 connects the bottom ends of the two arc-shaped connecting rods 17 and keeps them in a stretched state, so that the two second guide wheels 19 contact the third inclined surfaces 13 on both sides of the lifting block 11. When the lifting block 11 moves upward, the third inclined surfaces 13 push the second guide wheels 19, causing the arc-shaped connecting rods 17 to rotate around the hinge point, driving the first guide wheel 18 to approach the cylindrical steel for auxiliary clamping and positioning. The rotation direction of the support wheel 15, the first guide wheel 18 and the second guide wheel 19 are all towards the mounting plates 2 on both sides. When the cylindrical steel needs to rotate, their rolling reduces the friction with the surface of the cylindrical steel, assisting the cylindrical steel to rotate smoothly around its own axis.

Claims

1. A rotatable positioning device for cylindrical steel workpieces, comprising a base, characterized in that: The base top is symmetrically provided with positioning structures on both sides, the positioning structures comprise mounting plates fixedly installed on both sides of the base, the base top is provided with a first guide plate between the two mounting plates, the first guide plate is provided with a first dovetail groove at the top end, a first sliding block is slidably installed in the first dovetail groove, the first sliding block is provided with a driving block at the top, the driving block is provided with a first slope at the top end, the driving block is provided with a jacking structure on one side, the jacking structure comprises a second guide plate fixedly installed on the base top, the second guide plate is provided with a second dovetail groove on the surface, a second sliding block is slidably installed in the second dovetail groove, the second sliding block is fixedly connected with a jacking block at the end away from the second dovetail groove, and the jacking block is located above the driving block, the jacking block is provided with a second slope parallel to the first slope at the bottom, the driving block continuously pushes the jacking block to move upwards when moving along the first dovetail groove, the jacking block is provided with a third slope on both sides of the surface, the two third slopes are symmetrically arranged on both sides of the jacking block, the jacking block is provided with a support at the top end, and the support is rotatably provided with a support wheel at the top end, which is used for supporting the bottom of the steel pipe; the jacking block is provided with an auxiliary clamping structure on both sides, the auxiliary clamping structure comprises two fixed plates installed on the surfaces of the mounting plates respectively, the fixed plates are hingedly provided with arc-shaped connecting rods, the arc-shaped connecting rods are rotatably provided with first guide wheels at the top ends, the other ends are provided with second guide wheels, and the two arc-shaped connecting rods are connected with a tension spring between the bottom end surfaces, so that the two second guide wheels are in contact with the third slopes respectively; one end of the driving block is provided with a driving structure, and the driving structure is used for driving the driving block to move along the first dovetail groove.

2. The rotatable positioning device for cylindrical steel machining according to claim 1, characterized in that: The driving structure comprises a gas cylinder, and the driving end of the gas cylinder is connected with the end of the driving block away from the first slope through one of the mounting plates.

3. The rotatable positioning device for cylindrical steel machining according to claim 1, characterized in that: The arc-shaped inflection point of the arc-shaped connecting rod is hingedly connected with the fixed plate, which improves the stability of the arc-shaped connecting rod when rotating.

4. The rotatable positioning device for cylindrical steel machining according to claim 1, characterized in that: The support is in a U-shaped structure, and the support wheel is rotatably installed in the U-shaped opening, and the support wheel, the first guide wheel and the second guide wheel rotate towards the two mounting plates.

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