Steel pipe clamping device for steel pipe straightening machine
By combining the upper and lower clamps driven by a hydraulic cylinder, along with guide components and a ball bearing structure, the problems of non-adjustable clamping force and slow adjustment speed in existing technologies are solved, achieving stability and rapid straightening of steel pipe clamping.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHANGJIAGANG ZHONGZHENGLIAN PRECISION TUBE MFG CO LTD
- Filing Date
- 2025-06-16
- Publication Date
- 2026-05-19
AI Technical Summary
Existing straightening machines have an unadjustable clamping force when clamping steel pipes, which can easily damage the pipes and the adjustment speed is slow.
The upper and lower clamps are combined with hydraulic cylinders, along with guides and ball bearings, to achieve adjustable clamping force and stable positioning, ensuring that the steel pipe is not damaged during the straightening process.
It improves the stability and applicability of steel pipe clamping, ensures that the steel pipe is not damaged during the straightening process, and has a fast clamping speed.
Smart Images
Figure CN224254056U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of steel pipe straightening technology, specifically a steel pipe clamping device for a steel pipe straightening machine. Background Technology
[0002] A steel pipe straightening machine is a mechanical device used to straighten steel pipes. By straightening, it can achieve the ideal straightness requirements or rotational accuracy requirements, ensuring that the parts can achieve the assembly accuracy or obtain the minimum cutting allowance for the next process.
[0003] Existing straightening machines mostly use mechanical screw clamping for positioning when straightening steel pipes. Although this clamping and positioning method is simple and low-cost, its adjustment speed is slow and the clamping force is not adjustable, which may damage the steel pipe. Therefore, further improvements are needed. Utility Model Content
[0004] To address the aforementioned problems, this utility model provides the following technical solution: a steel pipe clamping device for a steel pipe straightening machine, comprising a base, a vertical frame fixedly installed on the center of the back of the base, an electric push rod fixedly installed on the top of the vertical frame, a punch fixedly installed at the bottom of the telescopic end of the electric push rod, a controller provided on the side of the vertical frame, an active rotating component and a driven rotating component respectively provided at both ends of the base, and a clamping and limiting component for clamping and positioning the steel pipe provided on the top side of the base and between the two active rotating components.
[0005] As an optimization, the clamping and limiting assembly includes a mounting base fixedly installed on the top side of the base. Brackets are fixedly installed on both sides of the mounting base, and a lower clamp is fixedly installed on the top side of the mounting base. A hydraulic cylinder is fixedly installed in the middle of the top wall of the brackets, and an upper clamp is fixedly installed at the bottom of the telescopic end of the hydraulic cylinder. Both the lower clamp and the upper clamp have "V"-shaped slots inside. By activating the hydraulic cylinder, the upper clamp can be moved downward, thereby causing the steel pipe to be stuck between the V-shaped slots of the lower clamp and the upper clamp.
[0006] As an optimization, both sides of the lower clamp and the upper clamp have edge portions, and a guide member for guiding and limiting is provided between the upper and lower edge portions.
[0007] As an optimization, the guide component includes a guide rod fixedly installed on the top side of the edge of the lower clamp, and a guide cylinder fixedly installed on the top side of the edge of the upper clamp, and the guide cylinder is slidably sleeved on the outside of the guide rod. By sliding the guide cylinder along the outside of the guide rod, it can play a limiting and guiding role.
[0008] As an optimization, a spring is sleeved on the outer side of the guide rod, and the spring is fixedly installed between the upper and lower side edges. The spring can play a certain buffering role and can also drive the upper clamp to return to its original position.
[0009] As an optimization, both the lower and upper clamps have sliding grooves inside their V-shaped grooves, and movable parts are provided inside the sliding grooves.
[0010] As an optimization, the movable component includes a slider that is slidably connected in the groove, with a ball embedded in the end of the slider. A compression spring is fixedly installed between the slider and the inner wall of the groove. The spring force itself will cause the ball to press tightly against the outside of the steel pipe, thereby limiting the movement of the steel pipe without hindering its rotation.
[0011] The beneficial effects of this utility model are:
[0012] The steel pipe straightening machine uses a steel pipe clamping device. By starting the hydraulic cylinder, the upper clamp moves downward and then gets stuck on the outside of the steel pipe through its internal V-groove, thus clamping and positioning the steel pipe. At the same time, the guide cylinder slides along the outside of the guide rod, which plays a limiting and guiding role in the vertical direction, improving the stability of the steel pipe clamping.
[0013] The steel pipe straightening machine uses a steel pipe clamping device. When the steel pipe is clamped and positioned, the slider is squeezed into the groove, which compresses the compression spring. Under the action of its elasticity, the ball bearings are driven to press tightly against the outside of the steel pipe. Since the ball bearings roll on the outside of the steel pipe, they do not hinder the rotation of the steel pipe, thus not affecting the straightening process of the steel pipe. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the structure of this utility model;
[0015] Figure 2 This is a three-dimensional schematic diagram of the clamping and limiting structure of this utility model;
[0016] Figure 3 This is a front view of the clamping and limiting structure of this utility model;
[0017] Figure 4 This utility model Figure 3 A magnified schematic diagram of the local structure at point A in the middle.
[0018] In the diagram: 1. Base; 2. Stand; 3. Electric push rod; 4. Punch; 5. Controller; 6. Active rotating component; 7. Driven rotating component; 8. Clamping and limiting assembly; 9. Mounting seat; 10. Bracket; 11. Lower clamp; 12. Hydraulic cylinder; 13. Upper clamp; 14. Guide rod; 15. Guide cylinder; 16. Spring; 17. Slider; 18. Ball bearing; 19. Compression spring. Detailed Implementation
[0019] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] Please see Figure 1 A steel pipe clamping device for a steel pipe straightening machine includes a base 1, a stand 2 fixedly installed on the middle of the back of the base 1, an electric push rod 3 fixedly installed on the top of the stand 2, a punch 4 fixedly installed at the bottom of the telescopic end of the electric push rod 3, a controller 5 provided on the side of the stand 2, an active rotating component 6 and a driven rotating component 7 respectively provided at both ends of the base 1, and a clamping and limiting component 8 for clamping and positioning the steel pipe is provided on the top side of the base 1 and between the two active rotating components 6.
[0022] Please see Figure 2-3 The clamping and limiting component 8 includes a mounting base 9 fixedly installed on the top side of the base 1. Brackets 10 are fixedly installed on both sides of the mounting base 9. A lower clamp 11 is fixedly installed on the top side of the mounting base 9. A hydraulic cylinder 12 is fixedly installed in the middle of the top wall of the bracket 10. An upper clamp 13 is fixedly installed at the bottom of the telescopic end of the hydraulic cylinder 12. Both the lower clamp 11 and the upper clamp 13 have "V" shaped slots inside. By starting the hydraulic cylinder 12, the upper clamp 13 can be driven to move downward, which will cause the steel pipe to be stuck between the V-shaped slots of the lower clamp 11 and the upper clamp 13, thus playing a clamping and limiting role. In addition, through the V-shaped design, it can position steel pipes of different diameters within a certain range, improving applicability.
[0023] Please see Figure 2-3Both sides of the lower clamp 11 and the upper clamp 13 have edge portions, and a guide member for guiding and limiting is provided between the upper and lower edge portions. The guide member includes a guide rod 14 fixedly installed on the top side of the edge portion of the lower clamp 11, and a guide cylinder 15 fixedly installed on the top side of the edge portion of the upper clamp 13. The guide cylinder 15 is slidably sleeved on the outside of the guide rod 14. By sliding the guide cylinder 15 along the outside of the guide rod 14, it can play a limiting and guiding role. A spring 16 is sleeved on the outside of the guide rod 14, and the spring 16 is fixedly installed between the upper and lower edge portions. The spring 16 can play a certain buffering role and can also drive the upper clamp 13 to return to its original position.
[0024] Please see Figure 4 Both the lower clamp 11 and the upper clamp 13 have sliding grooves inside their V-shaped grooves, and movable parts are provided in the sliding grooves. The movable parts include a slider 17 that is slidably connected in the sliding groove. A ball 18 is embedded in the end of the slider 17. A compression spring 19 is fixedly installed between the slider 17 and the inner wall of the sliding groove. The elastic force of the compression spring 19 will make the ball 18 press tightly against the outside of the steel pipe, so as to limit the steel pipe while not hindering the rotation of the steel pipe.
[0025] When in use, first place the steel pipe between the lower clamp 11 and the upper clamp 13, then start the hydraulic cylinder 12 to drive the upper clamp 13 to move downward, and then it will be stuck on the outside of the steel pipe through its internal V-groove, thus clamping and positioning the steel pipe. At the same time, the guide cylinder 15 slides along the outside of the guide rod 14, which will play a limiting and guiding role in the vertical direction, improving the stability of clamping the steel pipe.
[0026] At the same time, when clamping and positioning the steel pipe, the slider 17 will be squeezed into the groove, and the compression spring 19 will be compressed, so that the ball 18 will be pressed tightly against the outside of the steel pipe. Therefore, when the active rotating part 6 is started to drive the steel pipe to rotate, the ball 18 will be driven to roll along the outside of the steel pipe, so as not to affect the rotation of the steel pipe. Then, the straightening operation can be performed by moving the punch 4 up and down to squeeze the steel pipe.
[0027] In summary, the steel pipe clamping device of the steel pipe straightening machine moves the upper clamp 13 downward by starting the hydraulic cylinder 12, and then the upper clamp 13 is clamped on the outside of the steel pipe through its internal V-groove, thus clamping and positioning the steel pipe. At the same time, the guide cylinder 15 slides along the outside of the guide rod 14, which plays a limiting and guiding role in the vertical direction, improving the stability of clamping the steel pipe.
[0028] When the steel pipe is positioned by clamping, the slider 17 is squeezed into the groove, which compresses the compression spring 19. Under its elastic force, the ball 18 is driven to press tightly against the outside of the steel pipe. Since the ball 18 rolls on the outside of the steel pipe, it does not hinder the rotation of the steel pipe, thus not affecting the straightening operation of the steel pipe.
[0029] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," "join," and "fix" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0030] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings.
[0031] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.
Claims
1. A steel pipe clamping device for a steel pipe straightening machine, comprising a base (1), characterized in that: A stand (2) is fixedly installed on the back center of the base (1). An electric push rod (3) is fixedly installed on the top of the stand (2). A punch (4) is fixedly installed at the bottom of the telescopic end of the electric push rod (3). A controller (5) is provided on the side of the stand (2). An active rotating component (6) and a driven rotating component (7) are respectively provided at both ends of the base (1). A clamping and limiting component (8) for clamping and positioning the steel pipe is provided on the top side of the base (1) and between the two active rotating components (6).
2. The steel pipe clamping device for a steel pipe straightening machine according to claim 1, characterized in that: The clamping and limiting assembly (8) includes a mounting base (9) fixedly installed on the top side of the base (1), brackets (10) fixedly installed on both sides of the mounting base (9), a lower clamp (11) fixedly installed on the top side of the mounting base (9), a hydraulic cylinder (12) fixedly installed in the middle of the top wall of the bracket (10), an upper clamp (13) fixedly installed at the bottom of the telescopic end of the hydraulic cylinder (12), and both the lower clamp (11) and the upper clamp (13) have "V" shaped slots inside.
3. The steel pipe clamping device for a steel pipe straightening machine according to claim 2, characterized in that: Both sides of the lower clamp (11) and the upper clamp (13) have edge portions, and a guide member for guiding and limiting is provided between the upper and lower edge portions.
4. The steel pipe clamping device for a steel pipe straightening machine according to claim 3, characterized in that: The guide includes a guide rod (14) fixedly installed on the top side of the edge of the lower clamp (11), and a guide cylinder (15) fixedly installed on the top side of the edge of the upper clamp (13), and the guide cylinder (15) is slidably sleeved on the outside of the guide rod (14).
5. The steel pipe clamping device for a steel pipe straightening machine according to claim 4, characterized in that: A spring (16) is sleeved on the outside of the guide rod (14), and the spring (16) is fixedly installed between the upper and lower side edges.
6. The steel pipe clamping device for a steel pipe straightening machine according to claim 2, characterized in that: The V-groove of both the lower clamp (11) and the upper clamp (13) is provided with a sliding groove, and a movable part is provided in the sliding groove.
7. The steel pipe clamping device for a steel pipe straightening machine according to claim 6, characterized in that: The movable component includes a slider (17) slidably connected in a groove, with a ball (18) embedded in the end of the slider (17), and a compression spring (19) fixedly installed between the slider (17) and the inner wall of the groove.