Multi-point positioning mechanism for stainless steel pipe

Abstract

The utility model relates to a multi-point positioning mechanism for a stainless steel pipe, and aims to realize multi-point accurate positioning of the stainless steel pipe and improve the machining efficiency and precision. The mechanism comprises a fixed seat, a bearing, a main shaft, a sleeve, a positioning device, a rotating shaft, a connecting rod and the like, and the sleeve can be accurately positioned at different positions through the synergistic effect of the bearing, a flange plate and a support and the limiting matching of the positioning device and a polygonal cylinder at the tail end of the main shaft. The multi-point positioning device is simple in structure and easy to maintain, has an adjustable positioning mechanism of the screw, the spring and the pin in the guide cylinder, meets the multi-point positioning requirement, and remarkably improves the machining efficiency and precision.

Description

Technical Field

[0001] The present application relates to the field of stainless steel pipe processing and manufacturing, and specifically to a multi-point positioning mechanism for stainless steel pipes. Background Art

[0002] In existing stainless steel pipe processing, precise positioning of the pipes at intervals is often required to ensure machining accuracy. However, existing positioning mechanisms often only achieve single-point positioning and cannot meet the requirements for multi-point precise positioning, which limits improvements in machining efficiency and accuracy. Furthermore, while some mechanisms capable of multi-point positioning meet the functional requirements, their complex structures and high maintenance requirements hinder their practical application and maintenance. Utility Model Content

[0003] The purpose of this application is to provide a multi-point positioning mechanism for stainless steel pipes, which can achieve multi-point precise positioning of stainless steel pipes, improve processing efficiency and precision, and has a simple structure and is easy to maintain. To achieve the above purpose, this application provides the following technical solutions: a multi-point positioning mechanism for stainless steel pipes, comprising:

[0004] A fixing seat, wherein a through hole is provided in the fixing seat;

[0005] A bearing is arranged on one side of the through hole, the outer diameter of the bearing is smaller than the outer diameter of the through hole, and a flange is provided on the outer ring of the bearing;

[0006] A main shaft, wherein the head end of the main shaft is a cylinder and passes through the inner ring of the bearing and is fixedly connected to the inner ring of the bearing, the cylinder passes through the through hole and is fixed to the through hole via a bracket, and the tail end of the main shaft is a polygonal column;

[0007] A sleeve, the sleeve is sleeved on the polygonal cylinder, and connection plates are provided at the ends and the middle of the sleeve, the connection plates provided at the ends are connected to the flange, and the steel pipe is sleeved on the sleeve and fixed by the connection plate provided in the middle;

[0008] A positioning device, the positioning device is arranged on the outer wall of the sleeve and is connected to the interior of the sleeve. The exterior of the positioning device is a guide cylinder, the guide cylinder has an internal thread, and a screw, a spring, and a pin are provided inside the guide cylinder. The screw is threadedly connected to the guide cylinder, one end of the spring contacts the screw, and the other end is connected to the pin. The other end of the pin abuts the side wall of the polygonal cylinder;

[0009] A rotating shaft, the rotating shaft is disposed in the cylinder and can rotate relative to the cylinder;

[0010] A connecting rod, one end of which is connected to the rotating shaft, and the other end of which can contact the guide cylinder. The connecting rod rotates around the rotating shaft to realize the rotation of the guide cylinder. The positioning device cooperates with the side wall of the polygonal cylinder to enable the sleeve to be positioned in different positions.

[0011] Preferably, the screw is a nutless structure, and the screw can fully penetrate the guide cylinder. The length of the internal thread of the guide cylinder allows the pressure of the pin on the side wall of the polygonal cylinder to be changed by adjusting the position of the screw.

[0012] Preferably, the connecting rod is L-shaped, and the length of one end of the connecting rod connected to the rotating shaft is larger than the outer diameter of the fixing seat.

[0013] Preferably, the fixing seat is in an inverted T shape.

[0014] Preferably, the brackets are multiple and evenly distributed around the periphery of the cylinder.

[0015] Preferably, the present technical solution further includes a ball, which is arranged between the outer wall of the bearing and the through hole.

[0016] Preferably, the interior of the guide cylinder is a T-shaped cylindrical space, and the end of the guide cylinder with a larger inner diameter is used to accommodate the pin.

[0017] Preferably, the diameter of the pin is larger than the minimum diameter of the guide cylinder.

[0018] Preferably, in the technical solution, the surface where the pin contacts the polygonal cylinder is a plane.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] Through a unique multi-point positioning mechanism, precise multi-point positioning of the stainless steel tube is achieved, overcoming the limitations of single-point positioning in the prior art and significantly improving processing accuracy. By limiting the positioning device and the sidewalls of the polygonal cylinder, the sleeve can be positioned at different positions, meeting the requirements of multi-point positioning. Because this application can achieve multi-point precise positioning, frequent position adjustments are no longer required during the processing of the stainless steel tube, significantly improving processing efficiency. Simultaneous positioning at multiple points means more work can be completed in a shorter time. Compared to the complex positioning mechanisms in the prior art, the multi-point positioning mechanism of this application has a simple design. It includes components such as a fixed seat, bearings, spindle, sleeve, positioning device, rotating shaft, and connecting rod. The components fit together precisely, the structure is compact, and easy to manufacture and install. The coordinated operation of the bearings, flange, spindle, sleeve, and positioning device ensures the stability of the stainless steel tube during processing and reduces potential errors during processing. The screws, springs, and pins inside the guide cylinder provide an adjustable positioning mechanism, allowing the positioning accuracy and force to be adjusted according to actual needs to meet different processing requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a three-dimensional schematic diagram of a multi-point positioning mechanism for a stainless steel pipe proposed in an embodiment of the present application;

[0022] Figure 2 This is a three-dimensional schematic diagram from another perspective of a multi-point positioning mechanism for a stainless steel pipe proposed in an embodiment of the present application;

[0023] Figure 3 This is a three-dimensional schematic diagram from another perspective of a multi-point positioning mechanism for a stainless steel pipe proposed in an embodiment of the present application;

[0024] Figure 4 for Figure 3 Exploded view of the middle part structure;

[0025] Figure 5 This is a partial structural diagram of a multi-point positioning mechanism for a stainless steel pipe proposed in an embodiment of the present application;

[0026] Figure 6 This is a front view of a multi-point positioning mechanism for a stainless steel pipe proposed in an embodiment of the present application;

[0027] Figure 7 This is a partial left view of the structure of a multi-point positioning mechanism for a stainless steel pipe proposed in an embodiment of the present application;

[0028] In the figure: 1. fixing seat; 2. through hole; 3. bearing; 4. flange; 5. main shaft; 6. cylinder; 7. bracket; 8. polygonal cylinder; 9. sleeve; 10. connecting plate; 11. positioning device; 12. guide cylinder; 13. screw; 14. spring; 15. pin; 16. rotating shaft; 17. connecting rod; 18. ball bearing. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0030] It should be noted that, in the description of this application, the terms "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as a limitation on this application.

[0031] Furthermore, it should be understood that for ease of description, the sizes of the various components shown in the drawings are not drawn according to actual proportions. For example, the thickness or width of certain layers may be exaggerated relative to other layers.

[0032] It should be noted that like numbers and letters represent similar items in the following figures, so once an item is defined or described in one figure, it will not need to be further discussed and described in detail in the description of the subsequent figures.

[0033] In order to solve the technical problems in the background technology, such as Figure 1-7 As shown, the present application provides a technical solution: a multi-point positioning mechanism for a stainless steel pipe, which has the following characteristics:

[0034] The fixing base 1 is a sturdy component and the foundation of the present invention. It contains a through-hole 2. Through-hole 2 extends through the fixing base 1 and is slightly larger than the outer diameter of the bearing 3. The bearing 3 is mounted within through-hole 2, with its outer ring diameter smaller than that of the through-hole 2 to ensure free rotation within the through-hole 2. A flange 4 is fixed to the outer ring of the bearing 3, which connects to the end connection plate 10 of the sleeve 9. Specifically, the flange 4 is fixedly connected to one side of the outer ring of the bearing 3 and rotates synchronously with the outer ring of the bearing 3. The spindle 5 is an elongated component with a cylindrical body 6 at its head end. The cylindrical body 6 passes through the inner ring of the bearing 3 and is fixedly connected to it. The cylindrical body 6 continues through the through-hole 2 and is secured to the through-hole 2 by a bracket 7, ensuring the stability of the spindle 5. The end of the spindle 5 is designed as a polygonal column 8, which mates with the sleeve 9. The sleeve 9 is a cylindrical component that fits over the polygonal column 8. The sleeve 9 is provided with connecting plates 10 at both the ends and the middle. The connecting plates 10 at the ends are connected to the flange 4 via bolts or other fasteners, while the connecting plate 10 in the middle is used to secure the steel pipe. A positioning device 11 is mounted on the outer wall of the sleeve 9 and communicates with the interior of the sleeve 9. The positioning device 11 is externally mounted on a guide cylinder 12 with an internal thread. Inside the guide cylinder 12 are a screw 13, a spring 14, and a pin 15. The screw 13 is threadedly connected to the internal thread of the guide cylinder 12 to adjust the preload of the spring 14. One end of the spring 14 contacts the screw 13, and the other end connects to the pin 15. The other end of the pin 15 abuts the sidewall of the polygonal cylinder 8, restricting the movement of the guide cylinder 12 and, therefore, the rotation of the sleeve 9. A rotating shaft 16 is mounted within the cylindrical body 6 and can rotate freely relative to the cylindrical body 6. The design of the rotating shaft 16 allows the connecting rod 17 to rotate around it. One end of the connecting rod 17 is connected to the rotating shaft 16, and the other end is designed to contact the outer surface of the guide cylinder 12. When the connecting rod 17 rotates around the rotating shaft 16, it can drive the guide cylinder 12 to rotate, and the sleeve 9 is positioned under the limiting cooperation of the positioning device 11 and the side wall of the polygonal column (8).

[0035] It should be noted that the screw 13 is designed as a nutless structure, which means that it does not have a traditional nut part. Instead, it has a threaded outer surface, a smooth flat end on one end, and a concave hexagonal hole on the other end to accommodate a hexagonal wrench. This design allows the screw 13 to fully penetrate the interior of the guide tube 12 and not protrude from the end surface of the guide tube 12. The guide tube 12 is a hollow cylindrical component with internal threads machined inside. The length of these internal threads is designed to be long enough to allow the screw 13 to move significantly inside the guide tube 12. The length of the internal threads allows the pressure of the pin 15 on the side wall of the polygonal cylinder 8 to be changed by adjusting the position of the screw 13. The pin 15 is an elongated cylindrical or conical component with one end connected to the spring 14 and the other end designed to abut the side wall of the polygonal cylinder 8. The position of the pin 15 and the pressure on the side wall of the polygonal cylinder 8 can be controlled by adjusting the position of the screw 13 within the guide tube 12. In this design, the nutless construction of screw 13 and its ability to fully penetrate guide tube 12 create a cleaner exterior for the entire positioning mechanism, minimizing interference with surrounding components. Furthermore, by adjusting the position of screw 13, the pressure exerted by pin 15 on the sidewall of polygonal cylinder 8 can be precisely controlled, achieving precise positioning of sleeve 9. This design not only improves positioning flexibility and accuracy, but also reduces maintenance complexity and costs due to its simplified structure.

[0036] Furthermore, the connecting rod 17 is designed to be L-shaped, that is, it consists of two vertical parts forming a right angle. This design allows one end of the connecting rod 17 to be connected to the rotating shaft 16, while the other end can extend out to contact the guide cylinder 12. The length of the end of the connecting rod 17 connected to the rotating shaft 16 is designed to be larger than the outer diameter of the fixed seat 1. This design ensures that this end of the connecting rod 17 can extend out of the outside of the fixed seat 1 after being connected to the rotating shaft 16, so that it can contact the guide cylinder 12 without interference. When the free end of the connecting rod 17, that is, the long side of the L-shape, contacts the guide cylinder 12, the connecting rod 17 is driven to rotate around the rotating shaft 16 by the operator or mechanical power, which can drive the guide cylinder 12 to rotate. This rotation is transmitted to the sleeve 9 through the positioning device 11, thereby realizing the precise positioning of the sleeve 9 on the polygonal cylinder 8.

[0037] It should be noted that the overall shape of the mounting base 1 is an inverted T-shape, meaning it consists of a horizontal main portion and a vertical extension. The horizontal portion forms the main body of the mounting base 1, while the vertical portion extends vertically from one side or the center of the main portion. The vertical portion is used for connection to other devices. The inverted T-shape design provides the mounting base 1 with a large contact area on the horizontal plane, thus providing good stability. This is crucial for ensuring the stability of the entire positioning mechanism during operation.

[0038] Furthermore, the brackets 7 are designed to be multiple and evenly distributed around the periphery of the cylinder 6. This design ensures that the cylinder 6 is fully supported in the fixing base 1, thereby increasing the stability and durability of the entire mechanism. The brackets 7 are fixed to the fixing base 1 and the cylinder 6 by welding, bolting or other mechanical connection methods. The choice of connection method depends on the required strength and convenience of installation. The main function of the brackets 7 is to fix the cylinder 6 to prevent it from displacement or rotation during processing. The evenly distributed brackets 7 can effectively disperse the force and reduce local stress concentration, thereby improving the reliability of the entire mechanism.

[0039] It is worth noting that balls 18 are positioned between the outer wall of bearing 3 and through-hole 2. This arrangement allows bearing 3 to rotate more freely within holder 1 while reducing wear caused by direct contact. Balls 18 can be arranged in a single or multiple rows, the number of which depends on the size of bearing 3 and the required load capacity. Balls 18 are evenly distributed around the periphery of bearing 3 to ensure even load distribution. The balls 18 form a circular arrangement around the periphery of bearing 3, providing continuous rolling contact points as bearing 3 rotates, thereby reducing friction and improving rotational smoothness.

[0040] It should be pointed out that the interior of the guide cylinder 12 is designed as a T-shaped cylindrical space, which means that the internal structure of the guide cylinder 12 consists of two parts: a larger cylindrical space and a smaller cylindrical space, which intersect vertically inside the guide cylinder 12. The end with a larger inner diameter inside the guide cylinder 12 is designed to accommodate the pin 15. The inner diameter of this end is large enough to ensure that the pin 15 can move freely therein. The internal thread of the guide cylinder 12 is designed in the smaller cylindrical space part, and this part of the thread matches the external thread of the screw 13, allowing the screw 13 to move along the axial direction inside the guide cylinder 12. The spring 14 is located in the smaller cylindrical space. The guide cylinder 12 not only provides a stable structure to accommodate the pin 15, but also realizes precise control of the position of the pin 15 through its internal T-shaped cylindrical space, thereby improving the positioning accuracy and operational flexibility of the entire stainless steel pipe multi-point positioning mechanism.

[0041] It should be noted that the diameter of the pin 15 is designed to be larger than the minimum inner diameter of the guide cylinder 12. This design ensures that the pin 15 can move within the larger cylindrical space within the guide cylinder 12, but cannot enter the smaller cylindrical space, thus being restricted. Therefore, the pin 15 can only move axially within the guide cylinder 12 to a limited extent.

[0042] It should be noted that the surface where the pin 15 contacts the polygonal cylinder 8 is designed to be a plane. This design enables the pin 15 to provide a stable and uniform contact point on the polygonal cylinder 8, ensuring accuracy and reliability during the positioning process.

[0043] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A multi-point positioning mechanism for stainless steel pipes, characterized in that: include: A fixing seat (1), wherein a through hole (2) is provided in the fixing seat (1); A bearing (3), the bearing (3) being arranged on one side of the through hole (2), the outer diameter of the bearing (3) being smaller than the outer diameter of the through hole (2), and a flange (4) being arranged on the outer ring of the bearing (3); A main shaft (5), the head end of the main shaft (5) is a cylinder (6) and passes through the inner ring of the bearing (3) and is fixedly connected to the inner ring of the bearing (3), the cylinder (6) passes through the through hole (2) and is fixed to the through hole (2) via a bracket (7), and the end of the main shaft (5) is a polygonal column (8); A sleeve (9), the sleeve (9) is sleeved on the polygonal column (8), and connecting plates (10) are provided at the ends and the middle of the sleeve (9), the connecting plates (10) provided at the ends are connected to the flange (4), and the steel pipe is sleeved on the sleeve (9) and fixed by the connecting plate (10) provided at the middle; A positioning device (11), the positioning device (11) is arranged on the outer wall of the sleeve (9) and is communicated with the interior of the sleeve (9), the exterior of the positioning device (11) is a guide cylinder (12), the guide cylinder (12) has an internal thread, a screw (13), a spring (14) and a pin (15) are provided inside the guide cylinder (12), the screw (13) is threadedly connected to the guide cylinder (12), one end of the spring (14) contacts the screw (13), and the other end is connected to the pin (15), and the other end of the pin (15) abuts against the side wall of the polygonal cylinder (8); A rotating shaft (16), the rotating shaft (16) is arranged in the cylindrical body (6), and the rotating shaft (16) can rotate relative to the cylindrical body (6); A connecting rod (17) is provided, one end of which is connected to the rotating shaft (16) and the other end of which can contact the guide cylinder (12). The connecting rod (17) rotates around the rotating shaft (16) to realize the rotation of the guide cylinder (12). The positioning device (11) cooperates with the side wall of the polygonal column (8) to realize the positioning of the sleeve (9) at different positions.

2. The multi-point positioning mechanism for stainless steel pipe according to claim 1, characterized in that: The screw (13) is a nutless structure, and the screw (13) can be completely inserted into the guide cylinder (12). The length of the internal thread of the guide cylinder (12) allows the pressure of the pin (15) on the side wall of the polygonal cylinder (8) to be changed by adjusting the position of the screw (13).

3. The multi-point positioning mechanism for stainless steel pipe according to claim 1, characterized in that: The connecting rod (17) is L-shaped, and the length of one end of the connecting rod (17) connected to the rotating shaft (16) is greater than the outer diameter of the fixing seat (1).

4. The multi-point positioning mechanism for stainless steel pipe according to claim 1, characterized in that: The fixing seat (1) is in an inverted T shape.

5. The multi-point positioning mechanism for stainless steel pipe according to claim 1, characterized in that: There are multiple supports (7) that are evenly distributed around the periphery of the cylinder (6).

6. The multi-point positioning mechanism for stainless steel pipe according to any one of claims 1 to 5, characterized in that: It also includes a ball (18), which is arranged between the outer wall of the bearing (3) and the through hole (2).

7. The multi-point positioning mechanism for stainless steel pipe according to claim 6, characterized in that: The interior of the guide cylinder (12) is a T-shaped cylindrical space, and the end of the guide cylinder (12) with a larger inner diameter is used to accommodate the pin (15).

8. The multi-point positioning mechanism for stainless steel pipe according to claim 7, characterized in that: The diameter of the pin (15) is larger than the minimum diameter of the guide cylinder (12).

9. The multi-point positioning mechanism for stainless steel pipe according to claim 8, characterized in that: The surface where the pin (15) contacts the polygonal column (8) is a plane.

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