A pipe end connector alignment device

Abstract

The application relates to a pipe end connector calibration positioning device which comprises straight linear guides extending along a first direction, two sliders in sliding cooperation with the straight linear guides, and two calibration mechanisms respectively connected with the sliders, each calibration mechanism comprising a base connected with the slider, a ring-shaped scale arranged on the side of the base, and a clamping assembly connected with the slider and used for clamping a pipe end, the axial direction of the ring-shaped scale is parallel to the first direction, and the side surface of the ring-shaped scale is provided with scale marks which are distributed in an equidistant array along the circumferential side. The pipe end connector calibration positioning device effectively solves the problems of low precision, difficulty in standardization and dependence on manual experience in the angle calibration of the existing hydraulic pipe connector, and further realizes the integrated technical effects of visual angle adjustment, unified positioning reference and efficient assembly.

Description

Technical Field

[0001] This utility model relates to a connector calibration and positioning device, and more particularly to a pipe end connector calibration and positioning device. Background Technology

[0002] In modern engineering machinery, hydraulic equipment, and high-pressure transmission systems, hydraulic fittings are typically pre-fabricated to meet the connection requirements of hydraulic actuators in different locations. Standard connectors (such as threaded joints or flanges) are then welded or installed at both ends of these fittings. During subsequent installation, these connectors must be aligned with the inlets and outlets on the equipment; therefore, their orientation must strictly match the equipment interfaces. Otherwise, connection difficulties or even installation failure may occur. To ensure installation accuracy, the orientation of the connectors at both ends must be precisely calibrated during fitting fabrication or maintenance to ensure they meet the actual installation requirements of the equipment.

[0003] In existing technologies, in order to achieve angle calibration of the connectors at both ends of hydraulic pipe fittings, manual comparison, visual positioning, or auxiliary correction using a square or fixed fixtures are usually adopted.

[0004] However, the aforementioned methods generally suffer from low positioning accuracy, reliance on manual experience, poor repeatability, and an inability to intuitively reflect angular deviations. This is especially true in mass production scenarios, where manual calibration is inefficient and difficult to standardize. Furthermore, for systems requiring high-precision assembly, such as hydraulic control valve assembly connections and oil pipe connections in critical parts of engineering machinery, existing structures struggle to meet angular alignment requirements, leading to error accumulation and impacting the overall system's sealing and operational stability. Therefore, there is an urgent need to develop a pipe end connector calibration and positioning device to address these issues. Utility Model Content

[0005] The purpose of this invention is to provide a pipe end connector calibration and positioning device that enables angle visualization and precise adjustment, can also meet the adaptation needs of various pipe fitting specifications, and improves the efficiency and consistency of connector orientation calibration.

[0006] The technical solution adopted by this utility model to solve the above problems is: a pipe end connector calibration and positioning device, comprising:

[0007] Linear guide rail, extending along the first direction;

[0008] Two sliders, both of which are slidably engaged with the linear guide rail;

[0009] Two calibration mechanisms, each corresponding to one of the two sliders, each calibration mechanism comprising:

[0010] A base, connected to the slider, moves with the slider;

[0011] A ring-shaped measuring scale is disposed on the side of the base. The axis of the ring-shaped measuring scale is parallel to the first direction, and the side of the ring-shaped measuring scale parallel to the first direction is provided with scale marks. The scale marks are distributed in an array at equal intervals along the circumference of the ring-shaped measuring scale.

[0012] A clamping assembly for clamping the tube end, the clamping assembly being connected to the slider.

[0013] Preferably, both the base and the annular measuring scale are provided with horizontal bubbles.

[0014] Preferably, the calibration and positioning device further includes two locking members, which are detachably connected to the two sliders in a one-to-one correspondence, and the locking members are configured to abut against the linear guide rail after the sliders are moved to the target position.

[0015] Preferably, the axes of the two annular measuring scales are collinear, and the graduation marks on the two annular measuring scales are located on opposite sides.

[0016] Preferably, the clamping assembly includes:

[0017] A fixed bracket is fixedly connected to the base or the slider, and the fixed bracket has a mounting surface on the side away from the slider;

[0018] A first clamping element is disposed at the mounting surface;

[0019] The second clamping member is disposed on the side of the first clamping member away from the slider, and the second clamping member is detachably connected to the first clamping member.

[0020] The first clamping member has an arc-shaped groove on the side near the second clamping member and the second clamping member has an arc-shaped groove on the side near the first clamping member. When the first clamping member and the second clamping member clamp the tube end, the two arc-shaped grooves form a circular groove. The center of the circular groove is collinear with the axis of the annular measuring scale, and the diameter of the circular groove is adapted to the diameter of the tube end.

[0021] Preferably, the clamping assembly further includes two pads, which are respectively disposed in the two arc-shaped grooves.

[0022] Preferably, the padding layer is made of a flexible material.

[0023] Preferably, one side of the first clamping member is rotatably connected to one side of the second clamping member; a rotating shaft is rotatably connected to the other side of the first clamping member, and a through hole is formed on the side of the rotating shaft along its own radial direction. A connecting rod is movably inserted into the through hole. A first limiting member is provided at the far end of the connecting rod, and a second limiting member is provided at the other end of the connecting rod. An abutment and a spring are also movably sleeved on the connecting rod. The abutment and the spring are both disposed between the first limiting member and the second limiting member. The spring is located between the abutment and the second limiting member, and its two ends abut against the abutment and the second limiting member, respectively. When the first and second clamping members clamp the tube end, the abutment abuts against the side of the second clamping member away from the first clamping member to restrict relative rotation between the second and first clamping members.

[0024] The beneficial effects of the embodiments of this utility model are as follows:

[0025] 1. By employing a technical approach consisting of a linear guide rail, two slidingly fitted sliders, and two calibration mechanisms corresponding to the sliders, and by introducing a combination structure of a ring measuring scale with equally spaced graduations and a clamping assembly into the calibration mechanism, the existing technologies effectively solve the problems of relying on manual experience, low positioning accuracy, inability to intuitively quantify angle deviation, and difficulty in achieving standardization in mass production. This results in achieving the technical effects of synchronous and visual adjustment of connector angles, unified positioning reference, improved operational efficiency, and enhanced assembly consistency.

[0026] 2. By adopting the technical means of rotatably connecting the first clamping component and the second clamping component, and combining the limiting control structure composed of the rotating shaft, through hole connecting rod, end limit components, abutment component and spring, the problems of the existing clamping structure being unable to open and close quickly, lacking effective limitation of clamping angle, and poor stability of clamping process are effectively solved. Thus, the technical effect of precise and controllable clamping component angle, efficient and convenient clamping operation and reliable structure reset is achieved. Attached Figure Description

[0027] Figure 1 This is a schematic structural diagram of a calibration and positioning device proposed in one embodiment of the present invention.

[0028] Figure 2 This is a schematic side view of a calibration and positioning device proposed in one embodiment of the present invention.

[0029] Figure 3 This is a schematic structural diagram of a clamping component proposed in one embodiment of the present invention.

[0030] Wherein: 10, linear guide rail; 20, slider; 30, calibration mechanism; 310, base; 320, ring measuring scale; 321, scale mark; 330, clamping assembly; 331, fixed bracket; 332, first clamping member; 333, second clamping member; 334, arc groove; 335, pad; 40, horizontal bubble; 50, locking member; 60, first limiting member; 70, second limiting member; 80, abutment member; 90, spring. Detailed Implementation

[0031] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0032] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not 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 limiting the scope of protection of this application. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0033] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection between two components. Those skilled in the art will understand the specific meaning of the above terms in this application based on the specific circumstances.

[0034] Please see Figures 1 to 2 A preferred embodiment of this application provides a pipe end connector calibration and positioning device. This device is suitable for the precise calibration and positioning of the angles of the connectors at both ends of the pipe fitting during the manufacturing and assembly process of hydraulic pipe fittings. It is particularly suitable for use scenarios in hydraulic systems where the orientation of the connectors is strictly required for installation.

[0035] The calibration and positioning device for the aforementioned pipe end connector includes a linear guide rail 10, two sliders 20, and two calibration mechanisms 30. The linear guide rail 10 extends along a first direction; both sliders 20 are slidably engaged with the linear guide rail 10; the two calibration mechanisms 30 are connected one-to-one with each slider 20. Each calibration mechanism 30 includes a base 310, an annular measuring scale 320, and a clamping assembly 330. The base 310 is connected to the sliders 20 to move with them. The annular measuring scale 320 is disposed on the side of the base 310, with its axial direction parallel to the first direction. The side of the annular measuring scale 320 parallel to the first direction has graduations 321, which are evenly spaced along the circumference of the annular measuring scale 320. The clamping assembly 330 is used to clamp the pipe end and is connected to the sliders 20.

[0036] Specifically:

[0037] The linear guide rail 10 can be made of metal profiles, and its length can be adjusted to fit different specifications of hydraulic fittings. The surface of the guide rail is provided with guide grooves or precision ball bearing tracks to improve the smoothness of sliding and the repeatability of the slider 20. The guide rail is mounted on a horizontal working platform, and the surface of the platform is finely adjusted by a leveling mechanism to ensure that the reference plane of the entire device remains parallel to the ground.

[0038] The two slider assemblies 20 are connected to the linear guide rail 10 via internal ball bearings or linear sliding pairs, enabling low-friction sliding movement along the guide rail direction. Each slider 20 is fixedly connected to a set of calibration mechanisms 30. The movement of the slider 20 can be achieved by manual knob, lead screw adjustment, or stepper motor control. Once its position is determined, it can be fixed by a locking mechanism to prevent position deviation.

[0039] Each calibration mechanism 30 includes a base 310, a set of annular measuring scales 320, and a set of clamping assemblies 330. The base 310 is a metal frame structure, and its bottom is connected and fixed to the slider 20 by screws or a snap-fit ​​structure, so that it moves synchronously with the slider 20. The annular measuring scales 320 are vertically mounted on the side wall of the base 310. The axis of the annular measuring scales 320 is parallel to the extension direction of the linear guide rail 10, that is, consistent with the axis of the hydraulic pipe. The annular measuring scales 320 are made of transparent plexiglass or metal material, and one side of them has evenly distributed angle graduations 321, which cover the entire circumference, to mark the angular position of the connector relative to the reference direction, so as to facilitate intuitive comparison and adjustment of the connector angle.

[0040] The clamping assembly 330 is used to reliably clamp the pipe end. This assembly is fixedly mounted on the base 310 or the slider 20. The clamping assembly 330 can employ various clamping structures, such as two-jaw or multi-jaw structures, and is opened and closed by drive components such as knobs, lead screws, or pneumatic cylinders, thereby adapting to pipe fittings of different outer diameters. The clamping axis of the clamping assembly 330 is parallel to the extension direction of the linear guide rail 10, ensuring axial consistency and angular stability of the pipe fitting during clamping.

[0041] During operation, the hydraulic fitting is placed horizontally between two calibration mechanisms 30. Two sliders 20 move and position themselves according to the fitting length. Then, the clamping components 330 are operated to securely hold the two ends of the fitting. The operator can observe the graduations 321 on each annular measuring scale 320 to read the current angle orientation of the connector and adjust the connector by rotation according to calibration requirements until the graduation values ​​at both ends meet the installation requirements or the set angle deviation requirements. After calibration, welding, crimping, or fixing operations can be performed.

[0042] This device is suitable for hydraulic assembly workshops, pipe processing lines, maintenance and testing stations, and can be used for extended periods in indoor environments with normal temperature and humidity without requiring special environmental constraints. It is compatible with a wide range of pipe sizes, has a robust structure, and is easy to industrialize.

[0043] In this embodiment, by employing a graduated ring measuring scale 320 structure, a movable slider 20 calibration mechanism 30, and a multi-specification compatible clamping assembly 330, the problem of the inability to synchronously and accurately align the angles of the two ends of the hydraulic pipe fittings in the prior art is effectively solved. This achieves the technical effects of visual adjustment of the orientation of the fittings, high positioning accuracy, and easy operation.

[0044] To improve the attitude stability and operational accuracy of the calibration and positioning device during use, in some embodiments, please refer to... Figures 1 to 2 Both the base 310 and the annular measuring scale 320 in the calibration mechanism 30 are provided with horizontal bubbles 40.

[0045] Specifically:

[0046] The bubble level 40 indicates the horizontal state of the base 310 and the measuring component in their current spatial orientation, thus assisting the operator in real-time judgment of any tilt deviation during device placement and leveling. The bubble level 40, located on the base 310, can be mounted on its upper surface or side, typically using a bubble level encapsulated in a transparent plastic shell. The shell is embedded in the positioning hole of the base 310 or attached above the calibration surface. This structure indicates whether the entire calibration mechanism 30 is in an ideal horizontal reference state during installation or use, ensuring that the sliding direction of the slider 20 is aligned with the axial direction of the tube, and avoiding clamping deviations caused by overall device tilt.

[0047] The horizontal bubble 40 on the ring measuring scale 320 is located on the side of the scale or on one side of its support frame, allowing the operator to simultaneously observe whether the measuring scale body has deflected when reading the angle scale or adjusting the orientation of the connecting parts, thereby further ensuring the accuracy of the angle scale reading. The horizontal bubble 40 is mounted on the same reference plane as the scale dial, ensuring that its indication status truly reflects the spatial orientation of the ring measuring scale 320.

[0048] During operation, before placing the device, the operator should first observe the horizontal bubble 40 on the base 310, adjust the adjustment mechanism of the support platform below the base 310 until the bubble is centered, and confirm that the base 310 is level before moving the slider 20 and positioning the pipe. When adjusting the orientation of the connector, the operator can simultaneously observe whether the horizontal bubble 40 on the annular measuring scale 320 is deviated to determine whether the measuring scale has become skewed during operation, and make adjustments accordingly to ensure the reliability of the final angle indication.

[0049] In this embodiment, by employing the technique of setting a horizontal bubble 40 on the base 310 and the ring measuring scale 320, the problem of angle measurement deviation and calibration inaccuracy caused by the non-horizontal posture of the device in the prior art is effectively solved. This achieves the technical effects of visualizing the device leveling process, making angle reading more accurate, and improving the reliability of calibration results.

[0050] To enhance the positioning stability of slider 20 after adjustment and prevent accidental displacement of slider 20 due to external forces or vibrations during operation, please refer to [link / reference needed]. Figure 1 In some embodiments, the calibration positioning device further includes two locking members 50, which are detachably connected to the two sliders 20 in a one-to-one correspondence. The locking members 50 are configured to abut against the linear guide rail 10 after the sliders 20 are moved to the target position.

[0051] Specifically:

[0052] The two locking elements 50 are detachably connected to the two sliders 20 respectively. After the slider 20 moves to the target position, it can lock the position of the slider 20 by contacting or fixing it with the linear guide rail 10, thereby ensuring that the entire calibration mechanism 30 maintains its posture during the calibration operation.

[0053] The locking element 50 can take the form of bolts, clamping blocks, or lever-type clamping structures, preferably using a threaded knob plate or an elastic locking structure. One end of each locking element 50 is detachably mounted to the slider 20 via a screw or guide pin, and the other end extends to one side of the linear guide rail 10, having a contact surface that contacts the guide rail surface or sidewall. After adjusting the position of the slider 20, the operator rotates the knob or clamping lever to press the contact surface downwards against the guide rail surface, thereby creating a mechanical locking state and restricting further sliding of the slider 20.

[0054] The locking structure can be applied to the bottom or side of the slider 20, depending on the shape of the guide rail structure. When locking is no longer required or the position of the slider 20 needs to be readjusted, simply loosening or removing the locking element 50 upwards will unlock the operation. The design of the locking element 50 fully considers maintainability and adaptability; its connection structure allows for quick assembly and replacement, facilitating users to quickly switch between different calibration positions based on the pipe length.

[0055] In actual use, the slider 20 is slid along the guide rail to the target position aligned with the tube end, either manually or electrically. The operator then uses the locking device 50 to fix its position, forming a stable frame for the entire calibration structure. In this state, the angle calibration of the connectors and clamping operations can be further performed, ensuring that the entire calibration process is completed smoothly without interference.

[0056] In this embodiment, by adopting the technical means of setting a locking member 50 corresponding to the slider 20 and abutting against the linear guide rail 10 through the locking member 50, the problem of the slider 20 being difficult to maintain stably and easily shifting after adjustment in the prior art is effectively solved. Thus, the technical effect of reliable position locking of the slider 20 during the calibration operation is achieved, which is convenient to operate and has high repeatability.

[0057] To improve the symmetry, intuitiveness, and operational consistency of the device in calibrating the angle of the pipe end connectors, please refer to [link / reference needed]. Figure 1 In some embodiments, the axes of the two annular measuring scales 320 are collinear, and the scale marks 321 on the two annular measuring scales 320 are arranged on opposite sides, that is, facing outwards respectively, forming a mirror arrangement structure.

[0058] Specifically:

[0059] Two annular measuring scales 320 are respectively fixed on the base 310 of the corresponding calibration mechanism 30. After the base 310 is connected to the slider 20, the two annular measuring scales 320 can move synchronously or independently along the linear guide rail 10 with the slider 20. In this embodiment, after the two sliders 20 move to the target positions corresponding to the two ends of the pipe, the central axes of the two annular measuring scales 320 are kept strictly coaxial, thus giving them natural consistency in angular reference. This collinear arrangement ensures easy installation and debugging through structural symmetry design. During the calibration process, the angular reference surfaces of the two connecting parts are in the same plane of rotation, eliminating visual errors caused by tilting or misalignment.

[0060] Furthermore, to facilitate the operator's intuitive reading of angle information from directly in front, the graduation marks 321 of both annular measuring scales 320 are located on the visible surface of the outer side of the ring body and are arranged in opposite directions. In this way, when observing the orientation of either end of the connector, the operator can directly read the graduation on the side closer to them without having to cross the pipe or look in the opposite direction to observe the graduation value of the other measuring scale, thus avoiding reading errors caused by different observation angles.

[0061] This structure allows the two calibration mechanisms 30 to independently display the rotation angle of their respective end connectors during use, while simultaneously forming a relatively accurate angle reference system. Once the angles of the connectors on both sides are adjusted, the operator only needs to compare whether the two scale values ​​are consistent or meet the preset deviation to determine whether calibration is complete. The operation is efficient and has minimal error.

[0062] In this embodiment, by employing the technique of having two annular measuring scales 320 with their axes collinear and the scale marks 321 located on opposite sides, the problem of inconsistent angle references, difficulty in reading, and blind spots in the orientation calibration of connectors in the prior art is effectively solved. This achieves the technical effect of synchronous calibration of connectors at both ends, clear and intuitive scale reading, and high consistency in angle comparison.

[0063] To achieve high-precision clamping and centering of the pipe fitting ends, please refer to... Figure 2 and Figure 3In some embodiments, the clamping assembly 330 includes a fixed bracket 331, a first clamping member 332, and a second clamping member 333. The fixed bracket 331 is fixedly connected to the base 310 or the slider 20, and has a mounting surface on the side of the fixed bracket 331 away from the slider 20. The first clamping member 332 is disposed at the first mounting surface. The second clamping member 333 is disposed on the side of the first clamping member 332 away from the slider 20, and is detachably connected to the first clamping member 332. Both the side of the first clamping member 332 near the second clamping member 333 and the side of the second clamping member 333 near the first clamping member 332 have arc-shaped grooves 334. When the first clamping member 332 and the second clamping member 333 clamp the tube end, the two arc-shaped grooves 334 together form a circular groove. The center of the circular groove is collinear with the axis of the side ruler, and the diameter of the circular groove is adapted to the diameter of the tube end.

[0064] Specifically:

[0065] The fixed bracket 331 serves as a support platform for constructing the clamping structure and is rigidly connected to the slider 20 or the base 310 to ensure that the clamping assembly 330 is stable and synchronized during the movement of the slider 20, without shifting or loosening. The fixed bracket 331 is preferably made of metal and machined or welded as a whole, and has a mounting surface for mounting the clamping component on the side closest to the slider 20.

[0066] The first clamping member 332 is installed on the mounting surface as the fixed end of the clamping structure. Its structure is integrally formed or fixed to the mounting surface by screws. The first clamping member 332 has an arc-shaped groove 334 on the side facing the second clamping member 333. The curvature of the arc-shaped groove 334 is adapted to the outer diameter of the pipe end to be clamped. The inner surface of the groove is smooth or covered with elastic material to prevent damage to the surface of the pipe during the clamping process.

[0067] The second clamping member 333 is located on the side of the first clamping member 332 away from the slider 20. Its structure forms a pairing relationship with the first clamping member 332, and the two are detachably connected by bolts, snaps, slide rails, or quick-connect structures. The second clamping member 333 also has a matching arc-shaped groove 334 on the opposite side of the first clamping member 332. When the second clamping member 333 and the first clamping member 332 are closed or locked, the two arc-shaped grooves 334 together form a complete circular groove. The size of this circular groove is closely matched to the outer diameter of the pipe end to be calibrated, ensuring that the pipe does not wobble radially and remains axially aligned after clamping.

[0068] Crucially, the center of the circular groove is collinear with the axis of the annular measuring scale 320 in the calibration mechanism 30, ensuring strict alignment between the pipe axis and the angle reference axis. This guarantees that subsequent readings and adjustments of the connector angle are based on this coaxial reference, avoiding angle errors caused by clamping eccentricity. This structure, combined with a high-precision scale setting, enables accurate calibration of the connector's orientation angle.

[0069] During operation, the operator first places both ends of the pipe fitting between the two clamping components 330, and then adjusts the second clamping component 333 to achieve clamping, ensuring that the arc-shaped grooves 334 of the two clamping components completely surround and fit the outer wall of the pipe end. Because the inner surface of the circular groove has a large contact area with the circumference of the pipe end, it not only ensures a firm clamping, but also physically constrains the position of the pipe fitting's axis, keeping it highly coaxial with the side ruler axis.

[0070] The clamping assembly 330 is suitable for clamping hydraulic pipes, pneumatic pipes, and other metal pipe fittings of different specifications, and is particularly suitable for orientation calibration processes requiring high alignment accuracy. Under different application conditions, different diameter pipe ends can be adapted by changing the size of the arc groove 334 on the clamping assembly or by using a modular insert plate.

[0071] In this embodiment, the clamping assembly 330, consisting of a fixed bracket 331, a first clamping member 332, and a second clamping member 333, is adopted. By using a pairing arc-shaped groove 334 to form a circular groove that is adapted to the outer diameter of the pipe end and whose axis is collinear with the measuring scale, the problem of pipe clamping eccentricity, inaccurate positioning, and large angle reading error in the prior art is effectively solved. This achieves the technical effects of accurate coaxial clamping of the pipe end, consistent calibration benchmark of the connecting member angle, and high operating efficiency.

[0072] To enhance the protective performance of the clamping assembly 330 on the pipe end and improve contact stability during clamping, please refer to... Figure 2 and Figure 3 In some embodiments, each of the two arcuate grooves 334 in each clamping assembly 330 is provided with a pad 335, which is made of a flexible material.

[0073] Specifically:

[0074] Two pads 335 are respectively attached to the bottom or inner wall of the arc-shaped grooves 334 corresponding to the first clamping member 332 and the second clamping member 333, and are used to form a buffer contact interface with the outer wall of the pipe during the clamping process.

[0075] The pad 335 is made of flexible material, preferably rubber, silicone, polyurethane foam, flexible plastic, ethylene-vinyl acetate copolymer and other elastomer materials. These materials have good deformation ability, pressure resistance and anti-slip properties, and can achieve shape self-adaptation during clamping, effectively conforming to the pipe end surface with different morphology or slight deformation, while avoiding the rigid clamp from causing indentation, scratch, abrasion or local stress concentration on the metal pipe.

[0076] Each pad 335 can be installed using an embedded structure, secured by limiting edges or positioning grooves within the groove, or it can be adhered to the surface of the arc-shaped groove 334 using adhesive. Its thickness is designed and adjusted according to the clamping force requirements and material hardness, ensuring sufficient cushioning performance without affecting the precise matching of the arc-shaped groove 334 to the circular contour. The surface of the pad 335 can have a fine texture or raised dot structure to enhance friction and prevent axial slippage of the pipe fitting under stress.

[0077] During operation, when the operator clamps the end of the pipe fitting using the first clamping member 332 and the second clamping member 333, the outer wall of the pipe fitting contacts the padding layer 335 within the two arc-shaped grooves 334. The flexible padding layer 335 undergoes slight deformation under pressure, forming a wrapping fit, which not only improves clamping stability but also provides cushioning protection. Even if the pipe fitting has minor irregularities or ellipticity deviations, the flexibility of the padding layer 335 can effectively compensate for these, thereby maintaining the alignment of the pipe axis with the calibration mechanism 30.

[0078] In different application scenarios, the 335 pad material can be selected according to the material, surface treatment, and operating environment of the clamped object. For example, for high-strength stainless steel pipes, a high-friction coefficient elastic rubber pad 335 can be selected; for aluminum alloy pipes with surface spraying or anodizing, a flexible foam material that is not easily scratched is preferred; when operating in high-temperature environments, heat-resistant flexible materials such as silicone can be used.

[0079] In this embodiment, by employing the technical means of setting flexible material pads 335 in the two arc-shaped grooves 334 of the clamping component 330, the problems of sliding displacement, clamping damage and uneven contact that exist in the prior art when clamping the pipe end are effectively solved. Thus, the technical effects of improving contact stability, protecting the pipe surface and enhancing clamping adaptability are achieved while ensuring clamping force.

[0080] To improve the structural integrity and ease of operation of the clamping assembly 330, and to achieve self-resetting and limit control of the clamping components during opening and closing, please refer to... Figure 2 and Figure 3In some embodiments, one side of the first clamping member 332 is rotatably connected to one side of the second clamping member 333, which can be manifested as a hinge to form a rotatable and openable clamping structure; the other side of the first clamping member 332 is rotatably connected to a rotating shaft, the side of the rotating shaft has a through hole along its own radial direction, a connecting rod is movably inserted in the through hole, the far end of the connecting rod is provided with a first limiting member 60, the other end of the connecting rod is provided with a second limiting member 70, and an abutment member 80 and a spring 90 are movably sleeved on the connecting rod, the abutment member 80 and the spring 90 are both disposed between the first limiting member 60 and the second limiting member 70, the spring 90 is located between the abutment member 80 and the second limiting member 70, and the two ends of the spring 90 abut against the abutment member 80 and the second limiting member 70 respectively. When the first clamping member 332 and the second clamping member 333 clamp the tube end, the abutting member 80 abuts against the side of the second clamping member 333 away from the first clamping member 332, so as to restrict the relative rotation between the second clamping member 333 and the first clamping member 332.

[0081] Specifically:

[0082] The rotatable connection between the first clamping member 332 and the second clamping member 333 forms a rotatable and closable clamping structure, thereby realizing self-resetting and limit control of the clamping members during the opening and closing process. This structure allows operators to quickly place or remove the pipe end, avoiding the cumbersome operation caused by bolt fastening, while improving assembly stability and clamping consistency through the integrated rotary connection.

[0083] In this embodiment, a rotating shaft is connected to the other side of the first clamping member 332. The rotating shaft is rotatably connected to the first clamping member 332, and the rotating shaft can be axially disposed within the fixed bracket 331 or the clamping member housing. A through hole is formed on the side wall of the rotating shaft along its own radial direction, and a connecting rod is movably inserted into the through hole. The connecting rod can slide radially within the through hole. A first limiting member 60 is provided at one end of the connecting rod, and a second limiting member 70 is provided at the other end. The two limiting members are used to limit the maximum stroke of the connecting rod to prevent overtravel or structural failure.

[0084] A contact member 80 and a spring 90 are movably sleeved on the connecting rod, both positioned between the first limiting member 60 and the second limiting member 70. The spring 90 is located between the contact member 80 and the second limiting member 70 and is kept under a certain compression state, with one end abutting against the contact member 80 and the other end abutting against the second limiting member 70. This structure achieves elastic preload loading of the contact member 80 in the axial direction of the connecting rod.

[0085] When the first clamping member 332 and the second clamping member 333 close to clamp the tube end, the side of the second clamping member 333 closest to the first clamping member 332 rotates and closes under the clamping action. The abutment member 80 slides outward under the pushing force of the spring 90 and finally abuts against the side of the second clamping member 333 away from the first clamping member 332, forming a limiting stop state. This prevents the second clamping member 333 from continuing to rotate around the connection point and exceeding the closing angle, ensuring that the clamping angle is precisely controlled and avoiding structural overshoot. At the same time, this structure can also provide a certain degree of reset assistance when releasing, improving the consistency of the clamping member's springback. The entire mechanism has a compact structure and a sensitive response during the action process, making it suitable for workstation environments with high-frequency opening and closing clamping. Its rotating connection not only improves the integration level of the fixture structure but also effectively reduces the difficulty of disassembly and assembly and the complexity of maintenance.

[0086] In this embodiment, the first clamping member 332 and the second clamping member 333 are rotatably connected, and the limiting and self-resetting functions are achieved through the cooperation of the rotating shaft, connecting rod, limiting member, spring 90 and abutment member 80. Therefore, the problems of the clamping structure being difficult to close quickly, the rotation angle being uncontrollable and the clamping process being unstable in the prior art are effectively solved. Thus, the technical effects of integral molding of the clamping structure, efficient and reliable clamping opening and closing action, and precise and adjustable limiting are achieved.

[0087] The above description in this specification is merely illustrative of the present invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, as long as they do not depart from the content of this specification or exceed the scope defined in the claims, all of which shall fall within the protection scope of this invention.

Claims

1. A pipe end connection alignment device, comprising: include: Linear guide rail, extending along the first direction; Two sliders, both of which are slidably engaged with the linear guide rail; Two calibration mechanisms, each corresponding to one of the two sliders, each calibration mechanism comprising: A base, connected to the slider, moves with the slider; A ring-shaped measuring scale is disposed on the side of the base. The axis of the ring-shaped measuring scale is parallel to the first direction, and the side of the ring-shaped measuring scale parallel to the first direction is provided with scale marks. The scale marks are distributed in an array at equal intervals along the circumference of the ring-shaped measuring scale. A clamping assembly for clamping the tube end, the clamping assembly being connected to the slider.

2. A pipe end connector alignment device according to claim 1, wherein, Both the base and the annular measuring scale are equipped with horizontal bubbles.

3. The pipe end connector calibration and positioning device according to claim 1, characterized in that, It also includes two locking elements, which are detachably connected to the two sliders in a one-to-one correspondence, and the locking elements are configured to abut against the linear guide after the sliders are moved to the target position.

4. A pipe end connector alignment device according to claim 1, wherein, The axes of the two ring-shaped measuring scales are collinear, and the graduation marks on the two ring-shaped measuring scales are located on opposite sides.

5. A pipe end connector alignment device as defined in claim 1, wherein, The clamping assembly includes: A fixed bracket is fixedly connected to the base or the slider, and the fixed bracket has a mounting surface on the side away from the slider; A first clamping element is disposed at the mounting surface; The second clamping member is disposed on the side of the first clamping member away from the slider, and the second clamping member is detachably connected to the first clamping member; The first clamping member has an arc-shaped groove on the side near the second clamping member and the second clamping member has an arc-shaped groove on the side near the first clamping member. When the first clamping member and the second clamping member clamp the tube end, the two arc-shaped grooves form a circular groove. The center of the circular groove is collinear with the axis of the annular measuring scale, and the diameter of the circular groove is adapted to the diameter of the tube end.

6. A pipe end connector alignment device according to claim 5, wherein, The clamping assembly also includes two pads, which are respectively disposed in the two arc-shaped grooves.

7. A pipe end connector alignment device according to claim 6, wherein, The padding layer is made of a flexible material.

8. A pipe end connector calibration and positioning device according to claim 5, 6, or 7, characterized in that: One side of the first clamping member is rotatably connected to one side of the second clamping member; the other side of the first clamping member is rotatably connected to a rotating shaft, and a through hole is opened on the side of the rotating shaft along its own radial direction. A connecting rod is movably inserted into the through hole. A first limiting member is provided at the far end of the connecting rod, and a second limiting member is provided at the other end of the connecting rod. An abutment and a spring are also movably sleeved on the connecting rod. The abutment and the spring are both disposed between the first limiting member and the second limiting member. The spring is located between the abutment and the second limiting member, and both ends of the spring abut against the abutment and the second limiting member, respectively. When the first clamping member and the second clamping member clamp the tube end, the abutting member abuts against the second clamping member on the side away from the first clamping member, so as to restrict the relative rotation between the second clamping member and the first clamping member.

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