Fixing and rotating tool for flaw detection machine

Abstract

The invention relates to the technical field of workpiece flaw detection, and provides a flaw detection machine fixing and rotating tool which is used for flaw detection of a cylindrical workpiece and comprises a material clamping part, and the material clamping part is used for clamping the cylindrical workpiece from the two ends and enabling the cylindrical workpiece to rotate around a shaft; the coupling liquid containing and coating assembly can be movably arranged above the material clamping part and is provided with a containing cavity used for containing coupling liquid, an opening is formed in the lower end of the containing cavity, and the coupling liquid containing and coating assembly is configured to abut against and be attached to the barrel wall of the barrel-shaped workpiece after moving, so that the opening is blocked by the barrel wall of the barrel-shaped workpiece; and the flaw detection assembly can be movably arranged above the coupling liquid containing and coating assembly and is configured to enter the containing cavity after moving so as to abut against the barrel wall of the barrel-shaped workpiece. By means of the technical scheme, the technical problems that in the prior art, when a fixed rotating tool of a flaw detector detects flaws, the coupling liquid coating efficiency is low, and the effect is poor are solved.

Description

Technical Field

[0001] The embodiments of the present disclosure relate to the technical field of workpiece flaw detection, and in particular, to a fixed rotating tooling for a flaw detection machine. Background Art

[0002] In the flaw detection operation of cylindrical workpieces, the rotary tooling is a key equipment to ensure the comprehensiveness of the inspection. It drives the workpiece to rotate stably around the axis so that the flaw detection probe can completely scan the inner and outer walls of the workpiece. However, the existing rotary tooling has some defects in the coupling liquid coating process, resulting in low efficiency. On the one hand, the traditional manual pre-coating method not only requires additional operation time, but also makes it difficult to ensure the uniformity of coating. Especially for larger cylindrical workpieces, coating the inner wall is time-consuming and labor-intensive, and is prone to coating omissions or liquid accumulation. On the other hand, some rotary tooling with integrated coating devices, due to structural design limitations, either has a limited coating range and requires multiple adjustments to match the rotation of the workpiece, or is prone to coupling liquid splashing during rotation, making it impossible to achieve efficient and uniform coating simultaneously during the rotation of the workpiece, thereby slowing down the pace of the entire flaw detection process and making it difficult to meet the efficient inspection needs in mass production scenarios. Summary of the Invention

[0003] To overcome the above-mentioned defects, the embodiments of the present disclosure provide a fixed rotating fixture for a flaw detector, which solves the technical problem in the prior art of low efficiency and poor effect of coupling liquid coating when the fixed rotating fixture for a flaw detector is used for flaw detection.

[0004] According to one aspect, at least one embodiment of the present disclosure provides a fixed rotating fixture for a flaw detector, which is used for flaw detection of a cylindrical workpiece, comprising: A clamping member, which is used to clamp the cylindrical workpiece at both ends and can rotate the cylindrical workpiece around the axis; a coupling liquid containing and coating assembly, the coupling liquid containing and coating assembly being movably disposed above the material clamping member and having a housing chamber for containing coupling liquid, the lower end of the housing chamber having an opening, the coupling liquid containing and coating assembly being configured to abut against a wall of the cylindrical workpiece after movement, so that the opening is blocked by the wall of the cylindrical workpiece; The flaw detection component is movably arranged above the coupling liquid containing and coating component, and is configured to enter the containing cavity after movement to abut against the cylindrical wall of the cylindrical workpiece.

[0005] For example, in at least one embodiment of the present disclosure, a fixed rotating tooling for a flaw detector is provided, wherein the coupling liquid containing and coating assembly includes: A frame body, the frame body being movably arranged above the material clamping member, the frame body having a through slot, and side plates being connected to the lower sides of both ends of the through slot; Opening and closing plates, the upper ends of the two opening and closing plates are hingedly arranged on the frame, the two opening and closing plates and the two side plates surround the accommodating cavity, and the lower ends of the two opening and closing plates and the lower ends of the two side plates form the opening; the two opening and closing plates have at least a coating state and a closed state. When in the coating state, the lower ends of the two opening and closing plates are far away from each other, so that the opening is opened. When in the closed state, the lower ends of the two opening and closing plates are abutted against each other, so that the opening is closed.

[0006] For example, at least one embodiment of the present disclosure provides a fixed rotating tooling for a flaw detector, wherein the side plate is a telescopic side plate and the lower end is arc-shaped so as to fit with the cylindrical wall of the cylindrical workpiece.

[0007] For example, in at least one embodiment of the present disclosure, a fixed rotating tool for a flaw detector is provided, wherein the coupling liquid containing and coating assembly further comprises: An elastic member, one end of which acts on the opening and closing plates and the other end of which acts on the frame, provides a force for the two opening and closing plates to move closer to each other and remain in a closed state.

[0008] For example, at least one embodiment of the present disclosure provides a fixed rotating tool for a flaw detector, wherein the opening and closing plate is connected to a guide plate perpendicular to the hinge axis of the opening and closing plate, the guide plate has a push guide groove, and the coupling liquid containing coating assembly further includes: The swing push piece is hingedly arranged on the frame and has a sliding push portion. The sliding push portion and the push guide groove can rotate and slide in a clearance fit, and is used to push the opening and closing plate from a closed state to a coating state.

[0009] For example, at least one embodiment of the present disclosure provides a fixed rotating tooling for a flaw detector, wherein the lower end of the swinging push piece has an abutment portion, which is used to abut against the wall of the cylindrical workpiece and can open the opening and closing plate under the push of the cylindrical workpiece.

[0010] For example, at least one embodiment of the present disclosure provides a fixed rotating tooling for a flaw detector, wherein the lower end of the opening and closing plate has a flexible portion, and the flexible portion is used to fit with the cylindrical wall of the cylindrical workpiece.

[0011] For example, at least one embodiment of the present disclosure provides a fixed rotating tooling for a flaw detector, wherein the cavity wall of the accommodating cavity has an adsorption layer, the adsorption layer is used to adsorb and flow out coupling glue, and the adsorption layer is installed on the side walls of the opening and closing plate and the side plate.

[0012] For example, in at least one embodiment of the present disclosure, a fixed rotary fixture for a flaw detector is provided, wherein the clamping member is configured to be capable of rotation, lifting, and translation; and / or The flaw detection assembly is configured to be capable of lifting, lowering and translating.

[0013] For example, at least one embodiment of the present disclosure provides a fixed rotating tooling for a flaw detector, wherein the flaw detection component includes an ultrasonic flaw detection head.

[0014] The beneficial effects of the embodiments of the present disclosure are: In the present disclosure, the coupling fluid containing and coating assembly is capable of synchronously coating the cylindrical workpiece with the coupling fluid while it rotates, avoiding the additional time consumed by traditional manual pre-coating. Through the moving mechanism and abutting and fitting structure, efficient and uniform coating of the entire cylindrical workpiece wall can be achieved, reducing coating leaks and fluid accumulation, and improving the accuracy of flaw detection. This tooling integrates the functions of clamping, rotation, coupling fluid coating, and flaw detection, achieving an integrated operation of the flaw detection process, reducing the connection time between each link, and improving overall flaw detection efficiency. It is particularly suitable for the efficient detection needs in mass production scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] To more clearly illustrate the technical solutions in the embodiments of the present disclosure, the following briefly describes the drawings required for use in describing the embodiments of the present disclosure. Obviously, the drawings described below are merely some exemplary embodiments of the present disclosure. Those skilled in the art can, without inventive effort, derive other drawings based on the content of the exemplary embodiments of the present disclosure and these drawings.

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of a fixed rotating tooling of a flaw detector according to an embodiment of the present disclosure; Figure 2 for Figure 1 Middle A is a schematic diagram of a partially enlarged structure; Figure 3 for Figure 1 A schematic side view of the fixed rotating fixture of the flaw detector in the embodiment of FIG. Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure of the middle BB; Figure 5 for Figure 4 Middle C is a schematic diagram of the partially enlarged structure; In the figure: the clamping part 100, the coupling liquid containing coating component 200, the containing cavity 201, the opening 2011, the adsorption layer 202, the frame 210, the side plate 211, the opening and closing plate 220, the pushing guide groove 221, the flexible part 222, the elastic part 230, the swinging push part 240, the sliding push part 241, the abutting part 242, the flaw detection component 300, and the flaw detection head 310. DETAILED DESCRIPTION

[0017] The present disclosure will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present disclosure, rather than to limit the present disclosure.

[0018] To simplify the drawings, only the parts relevant to the disclosure are schematically shown in each figure; they do not represent the actual structure of the product. Furthermore, to simplify the drawings and facilitate understanding, in some figures, only one of the components with the same structure or function is schematically shown or labeled. In this document, "one" not only means "only one" but also "more than one," and "several" includes "two" and "more than two."

[0019] It should be noted that, unless otherwise specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they can refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediary; and internal communication between two components. Those skilled in the art will understand the specific meanings of these terms in this disclosure based on the specific circumstances.

[0020] In the present disclosure, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0021] In the description of this embodiment, the terms "up", "down", "left", "right", etc., and the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of description and simplification of operation, and 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 should not be understood as limitations on the present disclosure.

[0022] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0023] like Figures 1 to 5As shown, it shows a fixed rotating tooling of a flaw detector in one embodiment of the present disclosure, which is used for flaw detection of cylindrical workpieces, including a clamping member 100, a coupling liquid containing and coating assembly 200 and a flaw detection assembly 300. The clamping member 100 is used to clamp the cylindrical workpiece from both ends and can rotate the cylindrical workpiece around the axis; the coupling liquid containing and coating assembly 200 can be movably arranged above the clamping member 100, and has a containing cavity 201 for containing coupling liquid, and the lower end of the containing cavity 201 has an opening 2011, and the coupling liquid containing and coating assembly 200 is configured to be able to abut against the cylindrical wall of the cylindrical workpiece after movement, so that the opening 2011 is blocked by the cylindrical wall of the cylindrical workpiece; the flaw detection assembly 300 can be movably arranged above the coupling liquid containing and coating assembly 200, and is configured to be able to enter the containing cavity 201 after movement to abut against the cylindrical wall of the cylindrical workpiece.

[0024] For example, the clamping member 100 is composed of two movable clamping jaw units, which are respectively located at the two ends of the cylindrical workpiece. The inner side of the clamping jaw unit is designed with an arc-shaped groove adapted to the outer wall of the cylindrical workpiece to increase the contact area with the workpiece and improve the clamping stability.

[0025] The coupling liquid containing and coating assembly 200 is generally rectangular in shape, with a containing cavity 201 located within the assembly. The length of the opening 2011 at the lower end of the containing cavity 201 is consistent with the length of the containing cavity 201. When abutting against the wall of the cylindrical workpiece, the opening is blocked to prevent coupling liquid leakage. The coupling liquid containing and coating assembly 200 is located above the clamping member 100 and can be moved toward the cylindrical workpiece to apply coupling liquid thereto. The edge of the opening 2011 at the lower end of the containing cavity 201 is able to closely fit the wall of the cylindrical workpiece, ensuring that the opening 2011 is completely blocked.

[0026] The flaw detection assembly 300 primarily consists of a flaw detection probe, a probe holder, and a lifting mechanism. Depending on the specific flaw detection requirements, the flaw detection probe can be an ultrasonic probe, an eddy current probe, or other suitable probe. For example, an ultrasonic probe, made of piezoelectric ceramic, offers high sensitivity and resolution, enabling precise detection of defects within cylindrical workpieces.

[0027] The clamp 100 can clamp both ends of a cylindrical workpiece. A rotary motor drives the clamp 100 through a coupling, thereby rotating the cylindrical workpiece around its axis. The distance between the two clamping jaws of the clamp 100 can be adjusted to accommodate cylindrical workpieces of different lengths.

[0028] The coupling liquid containment and coating assembly 200 is moved above the cylindrical workpiece via a moving mechanism, then lowered so that the opening 2011 at the lower end of the containment chamber 201 abuts against the cylindrical workpiece's wall, ensuring that opening 2011 is completely blocked. At this point, the coupling liquid within the containment chamber 201 contacts the cylindrical workpiece's wall under the action of gravity. As the cylindrical workpiece rotates, the coupling liquid is evenly coated on the cylindrical wall. The moving mechanism enables the coupling liquid containment and coating assembly 201 to move axially along the cylindrical workpiece, which, combined with the workpiece's own rotation, coats the entire cylindrical wall.

[0029] The flaw detection assembly 300 is moved by a moving mechanism to the position above the coupling fluid containing and coating assembly 200. The flaw detection probe is then moved by a lifting mechanism into the containing chamber 201, where it contacts the cylindrical workpiece's wall. As the cylindrical workpiece rotates, the flaw detection probe inspects the wall, detecting internal defects. The moving mechanism of the flaw detection assembly 300 allows it to move axially along the cylindrical workpiece, enabling flaw detection along the entire wall.

[0030] When applying the coupling liquid, the moving mechanism of the coupling liquid containing and applying component 200 is activated to move the coupling liquid containing and applying component 200 to the top of the cylindrical workpiece. The lifting mechanism is then activated to lower the coupling liquid containing and applying component 200 so that the opening 2011 at the lower end of the containing chamber 201 abuts against the cylindrical wall of the cylindrical workpiece, ensuring that the opening 2011 is completely blocked. At this time, the coupling liquid in the containing chamber 201 contacts the cylindrical wall of the cylindrical workpiece under the action of gravity. As the cylindrical workpiece rotates, the coupling liquid is evenly coated on the cylindrical wall. At the same time, the moving speed of the coupling liquid containing and applying component 200 is adjusted as needed so that it moves along the axial direction of the cylindrical workpiece to achieve coating of the entire cylindrical wall.

[0031] During flaw detection, the movement mechanism of the flaw detection assembly 300 is activated, moving the assembly above the coupling fluid receiving and coating assembly 200. The lifting mechanism is then activated, allowing the flaw detection probe to enter the receiving cavity 201 and abut against the cylindrical workpiece's wall, ensuring stable transmission of the flaw detection signal. As the cylindrical workpiece rotates, the flaw detection probe inspects the wall, detecting defects within the workpiece. Simultaneously, the movement speed of the flaw detection assembly 300 is adjusted as needed, allowing it to move axially along the cylindrical workpiece, thereby inspecting the entire wall.

[0032] The coupling fluid containment and coating assembly 200 applies coupling fluid simultaneously to the cylindrical workpiece as it rotates, eliminating the time-consuming manual pre-coating process. Through its movable mechanism and abutting and fitting structure, it efficiently and evenly coats the entire cylindrical workpiece, minimizing coating leaks and fluid accumulation, and improving flaw detection accuracy.

[0033] The tooling integrates functions such as clamping, rotation, coupling fluid coating and flaw detection, realizing the integrated operation of the flaw detection process, reducing the connection time between each link, and improving the overall flaw detection efficiency. It is especially suitable for the efficient detection needs in mass production scenarios.

[0034] The adjustable jaw unit of the clamping member 100 can adapt to cylindrical workpieces of different lengths, and the flaw detection assembly 300 can replace different types of flaw detection probes to meet various flaw detection needs, thereby improving the versatility and adaptability of the equipment.

[0035] In some examples, such as Figure 2 、 Figure 5 As shown, the coupling liquid containing coating assembly 200 includes a frame 210 and an opening and closing plate 220. The frame 210 can be movably arranged above the clamping member 100. The frame 210 has a through groove, and the lower sides of both ends of the through groove are connected to side plates 211; the upper ends of the two opening and closing plates 220 are hingedly arranged on the frame 210, and the two opening and closing plates 220 and the two side plates 211 form a containing cavity 201, and the lower ends of the two opening and closing plates 220 and the lower ends of the two side plates 211 form an opening 2011; the two opening and closing plates 220 have at least a coating state and a closed state. When in the coating state, the lower ends of the two opening and closing plates 220 are far away from each other, so that the opening 2011 is open. When in the closed state, the lower ends of the two opening and closing plates 220 are abutted against each other, so that the opening 2011 is closed.

[0036] For example, the frame 210 may be square and annular, and the side panels 211 on both sides not only serve to enclose the coupling fluid, but also provide hinged support for the opening and closing plate 220 .

[0037] The frame 210 is installed above the clamping part 100 through linear slide rails and sliders. The sliders are tightly connected to both sides of the frame 210 and can slide along the linear slide rails. The drive motor is connected through a screw rod, which cooperates with the nut on the slider to drive the frame 210 to move smoothly along the linear slide rails.

[0038] The opening and closing plate 220 is a rectangular thin plate. The upper end of the opening and closing plate 220 is hinged to the side plates 211 on both sides of the frame 210 through a hinge. The hinge point is located at the upper position in the height direction of the side plate 211, so that the opening and closing plate 220 can swing around the hinge point as the axis.

[0039] To control the switching of the opening and closing plates 220 between the coating and sealing states, each opening and closing plate 220 is equipped with an electric push rod. One end of the push rod is connected to the opening and closing plate 220 via a joint bearing, and the other end is hinged to the side plate 211. When the push rod is extended or shortened, it causes the opening and closing plate 220 to swing about the hinge point, allowing the opening and closing plate 220 to flexibly switch between the two states.

[0040] A soft and well-sealed rubber strip is installed at the lower edge of the opening and closing plates 220. When the opening and closing plates 220 are in a closed state, the rubber strips at the lower ends of the two opening and closing plates 220 are tightly abutted, ensuring that the opening 2011 is completely closed to prevent coupling fluid leakage.

[0041] When the opening and closing plates 220 are closed, the two opening and closing plates 220 and the two side plates 211 form a chamber 201 for storing coupling fluid. When coupling fluid is required, the electric push rod extends, moving the lower ends of the two opening and closing plates 220 apart. Opening 2011 opens, and the coupling fluid in the chamber 201 flows out under gravity. As the cylindrical workpiece rotates, it is evenly coated on the cylindrical wall. The movable mechanism of the frame 210 allows the entire coupling fluid container and coating assembly 200 to move axially along the cylindrical workpiece, coating the entire cylindrical wall.

[0042] The electric push rod serves as the power source for switching the opening and closing plate 220. By controlling the extension and retraction length of the electric push rod, the opening and closing plate 220 can be quickly and accurately switched between the coating state and the closed state. The provision of a sealing rubber strip ensures the sealing of the receiving chamber 201 in the closed state, preventing leakage of the coupling fluid. In the coating state, the coupling fluid can flow out smoothly for coating.

[0043] The design of the opening and closing plate 220 makes the coating of the coupling liquid more flexible. By controlling the opening and closing of the opening and closing plate 220 through an electric push rod, the coating timing of the coupling liquid can be controlled, thereby improving the coating efficiency compared to traditional coating methods.

[0044] The state switching of the coupling liquid containing coating component 200 is closely coordinated with the flaw detection operation, which reduces the waiting time, optimizes the entire flaw detection process, and further improves the working efficiency of the flaw detection machine fixed rotary tooling in batch production flaw detection operations.

[0045] In some examples, the side plate 211 is a telescopic side plate and the lower end is arc-shaped to fit with the wall of the cylindrical workpiece.

[0046] For example, Figure 2 、 Figure 5 As shown, the side panels 211 are composed of an inner panel and an outer panel. The inner panel can slide within the outer panel to achieve the telescopic function of the side panels. The inner and outer panels are matched by a dovetail groove structure. The dovetail grooves are set on the two side edges of the inner panel. The corresponding positions of the outer panel are machined with matching dovetail guide rails to ensure that the inner panel slides smoothly within the outer panel and does not fall off. A spring can be set between the outer and inner panels to keep the inner panel extended. When the inner panel abuts the wall of the cylindrical workpiece, the inner panel will slide inward to ensure that the opening and closing plate 220 can move downward to abut the wall of the cylindrical workpiece.

[0047] The lower end of side plate 211, i.e., the inner plate, is designed to be curved to match the outer contour of the cylindrical workpiece. The radius of the arc is optimized based on the radius range of common cylindrical workpieces. This design ensures that the edge of opening 2011 fits tightly against the cylindrical workpiece wall, effectively preventing coupling fluid leakage.

[0048] Because the lower end of side plate 211 is curved, the edge of opening 2011 always fits snugly against the wall of the cylindrical workpiece. This design ensures that coupling fluid containment and application assembly 200 effectively holds and applies coupling fluid during the flaw detection process, preventing leakage and ensuring smooth flaw detection. The combination of the retractable side plates and the curved lower end allows the fixture to accommodate cylindrical workpieces of varying diameters.

[0049] In some examples, such as Figure 2 As shown, the coupling liquid containing coating assembly 200 further includes an elastic member 230 , one end of the elastic member 230 acts on the opening and closing plate 220 , and the other end acts on the frame 210 , providing a force to keep the two opening and closing plates 220 close to each other and in a closed state.

[0050] For example, the elastic member 230 is a tension spring, installed between the frame 210 and the opening and closing plate 220. A fixed hook is provided on the side panel 211 of the frame 210, near the hinge point of the opening and closing plate 220. A corresponding hook is also provided on the opening and closing plate 220. The ends of the tension spring are respectively attached to these two hooks. During installation, the spring is pre-stretched to ensure initial elastic force.

[0051] The elastic force of elastic member 230 acts on opening and closing plates 220, causing them to move closer together, thereby keeping opening 2011 closed. During this process, the spring force automatically compensates for any positional shifts in opening and closing plates 220 caused by vibration, shaking, and other factors, ensuring the tightness of accommodating chamber 201. Even if the cylindrical workpiece rotates and vibrates during the flaw detection process, elastic member 230 ensures that opening and closing plates 220 remain tightly in contact, preventing leakage of the coupling fluid.

[0052] In some examples, such as Figure 2 、 Figure 5 As shown, the opening and closing plate 220 is connected to a guide plate perpendicular to the hinge axis of the opening and closing plate 220, and the guide plate has a pushing guide groove 221. The coupling liquid containing coating assembly 200 also includes a swinging pusher 240, which is hingedly arranged on the frame 210 and has a sliding pusher 241. The sliding pusher 241 and the pushing guide groove 221 can rotate and slide with clearance fit, and are used to push the opening and closing plate 220 from a closed state to a coating state.

[0053] For example, the pushing guide groove 221 is provided on the outer side surface of the opening and closing plate 220 , in the middle or near the lower end thereof.

[0054] The swing pusher 240 consists of a connecting arm and a sliding pusher 241. One end of the connecting arm is hinged to the side panel 211 of the frame 210, with the hinge point located at the upper end of the side panel 211, allowing the swing pusher 240 to swing about the hinge point. The sliding pusher 241 is cylindrical and integrally formed with the connecting arm. It fits into the push guide slot 221, allowing it to rotate and slide flexibly within the slot.

[0055] When the opening and closing plates 220 need to be transitioned from the closed state to the coating state, the swinging pusher 240 is pushed to swing about the hinge point. As the swinging pusher 240 swings, its sliding pusher 241 slides and rotates within the push guide groove 221. Guided by the push guide groove 221, the movement of the sliding pusher 241 drives the opening and closing plates 220 to rotate about their hinge points, causing the lower ends of the two opening and closing plates 220 to move away from each other, opening the opening 2011, and thus achieving the transition from the closed state to the coating state.

[0056] When the opening and closing plates 220 are in the closed state, the elastic member 230 provides a force that keeps the opening and closing plates 220 close to each other. When the swing pusher 240 is activated, it overcomes the elastic force of the elastic member 230 and pushes the opening and closing plates 220 open. When the closing state is restored, the elastic force of the elastic member 230 forces the opening and closing plates 220 back to the close position, achieving flexible switching between the two states.

[0057] In some examples, such as Figure 2 、 Figure 5 As shown, the lower end of the swing pusher 240 has an abutting portion 242, which is used to abut against the wall of the cylindrical workpiece and can open the opening and closing plate 220 under the push of the cylindrical workpiece.

[0058] For example, the abutment portion 242 is located at the lower edge of the swing pusher 240 and is a protruding cylindrical or arc-shaped structure. When the opening and closing plate 220 is in the closed state, the sliding pusher portion 241 of the swing pusher 240 is located at one end of the push guide groove 221. At this time, the abutment portion 242 is above the cylindrical wall of the cylindrical workpiece.

[0059] After the coupling fluid containing coating assembly 200 gradually descends from above the cylindrical workpiece, the abutment portion 242 comes into close contact with the cylindrical workpiece wall. Continued downward movement causes the cylindrical workpiece wall to push the swinging pusher 240 to swing about its hinge point. As the swinging pusher 240 swings, the sliding pusher 241 further slides within the pushing guide groove 221, pushing the lower ends of the opening and closing plates 220 away from each other, opening the opening 2011 and entering the coating state.

[0060] The contact between the rotating cylindrical workpiece and the abutment portion 242 serves as the trigger for switching the state of the opening and closing plate 220. This design automatically triggers the opening and closing plate 220 from the closed state to the coating state when the abutment portion 242 contacts the cylindrical workpiece, eliminating the need for additional complex control operations, simplifying the flaw detection process, and improving work efficiency.

[0061] In some examples, such as Figure 5 As shown, the lower end of the opening and closing plate 220 has a flexible portion 222, and the flexible portion 222 is used to fit with the wall of the cylindrical workpiece.

[0062] For example, the flexible portion 222 is made of a highly elastic, wear-resistant silicone rubber material, offering excellent flexibility and sealing properties, adapting to cylindrical workpieces with varying surface conditions and curvatures. The highly elastic silicone rubber material of the flexible portion 222 allows it to tightly adhere to the cylindrical workpiece's wall, whether the surface is flat or slightly uneven, forming a good seal to prevent coupling fluid leakage. Its elongated shape and moderate width increase the contact area with the cylindrical wall, further enhancing the sealing effect.

[0063] In some examples, such as Figure 5 As shown, the cavity wall of the accommodating cavity 201 has an adsorption layer 202 . The adsorption layer 202 is used to absorb and allow the coupling glue to flow out. The adsorption layer 202 is installed on the side walls of the opening and closing plate 220 and the side plate 211 .

[0064] For example, adsorption layer 202 is made of a superabsorbent resin material. This material has extremely strong water absorption and water retention properties, allowing it to absorb large amounts of coupling glue and slowly release it under the action of gravity. Furthermore, to increase the mechanical strength of adsorption layer 202, an appropriate amount of fiber reinforcement material, such as glass fiber, is added to the superabsorbent resin. This allows it to maintain a certain shape after adsorption of the coupling glue and resists breakage.

[0065] The adsorption layer is tightly attached to the inner sidewalls of the opening and closing plate 220 and the side plate 211. Its thickness is designed based on the space of the accommodating cavity 201 and the required amount of coupling glue. The surface of the adsorption layer 202 has many tiny pores, which facilitate the adsorption and outflow of the coupling glue.

[0066] During the preparation stage for flaw detection, coupling glue is injected into the accommodating chamber 201. The adsorption layer 202, utilizing the properties of its highly absorbent resin, rapidly absorbs and stores a large amount of coupling glue. When the opening and closing plate 220 is opened to enter the coating state, due to gravity and the centrifugal force generated by the rotation of the cylindrical workpiece, the coupling glue in the adsorption layer 202 slowly flows out through the tiny pores and is then evenly distributed on the cylindrical wall of the cylindrical workpiece. This design allows the accommodating chamber 201 to accommodate only a small amount of coupling glue, which can prevent accidental excessive outflow of coupling glue from the accommodating chamber 201. This not only ensures a continuous supply of coupling glue during the coating process, but also achieves a more uniform coating effect.

[0067] The adsorption layer 202 is distributed on the side walls of the opening and closing plate 220 and the side plate 211 and eventually flows to the opening 2011 and out of the opening 2011. The presence of the tiny pores controls the outflow speed of the coupling glue, avoiding uneven coating caused by a large amount of coupling glue flowing out at one time.

[0068] In some examples, the clamping member 100 is configured to be rotatable, liftable, and translatable; and the flaw detection assembly 300 is configured to be liftable, liftable, and translatable.

[0069] For example, the rotation function of the clamp 100 is powered by a rotary motor. The rotary motor is installed in the bottom base of the clamp 100, and the output shaft of the motor is connected to the rotating spindle of the clamp 100 through a coupling. The rotating spindle can withstand the large torque generated by the rotation of the cylindrical workpiece.

[0070] The lifting and lowering of the clamp 100 is achieved by a ball screw elevator. The ball screw elevator consists of a motor, a screw, a nut, and a guide rail. The motor is installed in the clamp 100 to drive the screw to rotate. The nut is connected to the main frame of the clamp 100. When the screw rotates, the nut moves up and down along the screw, thereby achieving the lifting and lowering of the clamp 100. The guide rails are installed on both sides of the bottom base of the clamp 100. The main frame of the clamp 100 cooperates with the guide rails through the slider to ensure the smoothness and accuracy of the lifting process. The lifting stroke is sufficient to meet the requirements of flaw detection of cylindrical workpieces of different heights.

[0071] The clamping element 100 is translated using a combination of linear rails and sliders. The linear rails are laid horizontally on the workbench, and the sliders are fixedly connected to the base of the clamping element 100. A motor drives a lead screw, which engages a nut on the slider to achieve translation of the clamping element 100 along the linear rails.

[0072] The Flaw Detection Assembly 300 also uses a ball screw lifter to raise and lower the Flaw Detection Assembly 300. A motor drives the screw. A nut is connected to the probe mounting base of the Flaw Detection Assembly 300. Rotating the screw drives the probe mounting base up and down, raising and lowering the Flaw Detection Probe. Guide rails are attached to the frames on both sides of the Flaw Detection Assembly 300. The probe mounting base cooperates with the guide rails via sliders, ensuring smooth and precise lifting.

[0073] The flaw detection assembly 300 also utilizes a linear slide and slider structure for translation. The linear slide is mounted horizontally on a bracket above the coupling fluid containment and coating assembly 200, while the slider is fixedly connected to the top frame of the flaw detection assembly 300. A motor drives a lead screw, which engages a nut on the slider to achieve translational movement of the flaw detection assembly 300 along the linear slide. The flaw detection probe can move axially along the cylindrical workpiece, completing flaw detection along the entire cylindrical wall.

[0074] In some examples, Figure 5 As shown, the flaw detection assembly 300 includes a flaw detection head 310 , which is an ultrasonic flaw detection head and can be replaced.

[0075] For example, the ultrasonic flaw detection probe uses piezoelectric ceramics as transducer elements, leveraging the piezoelectric effect to convert electrical energy into ultrasonic mechanical energy. The piezoelectric ceramics are meticulously encapsulated within a metal housing made of high-strength, wear-resistant stainless steel. This housing protects the piezoelectric ceramics from environmental influences while also enhancing the overall structural strength of the flaw detection probe. The housing's ergonomic design facilitates handling and installation.

[0076] The flaw detection head 310 is connected to the main frame of the flaw detection assembly 300 through a clamp. When the flaw detection head 310 needs to be replaced, the clamp is loosened and the flaw detection head 310 can be easily pulled out, thereby realizing the replacement of the ultrasonic flaw detection head.

[0077] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present disclosure and are not limiting. Although the present disclosure has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present disclosure may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present disclosure, and all of these should be included in the scope of the claims of the present disclosure.

Claims

1. A fixed rotating fixture for a flaw detector, used for flaw detection of cylindrical workpieces, characterized in that: include: A material clamping member (100), the material clamping member (100) is used to clamp a cylindrical workpiece at both ends and can enable the cylindrical workpiece to rotate around an axis; A coupling liquid containing and coating component (200) is movably arranged above the clamping member (100) and has a containing cavity (201) for containing the coupling liquid, the lower end of the containing cavity (201) having an opening (2011), and the coupling liquid containing and coating component (200) is configured to abut against the wall of the cylindrical workpiece after movement, so that the opening (2011) is blocked by the wall of the cylindrical workpiece; A flaw detection assembly (300) is movably arranged above the coupling liquid containing coating assembly (200) and is configured to enter the containing cavity (201) after movement to abut against the wall of the cylindrical workpiece.

2. A fixed rotating fixture for a flaw detector according to claim 1, characterized in that: The coupling liquid containing coating assembly (200) comprises: A frame (210), the frame (210) being movably disposed above the material clamping member (100), the frame (210) having a through slot, and side plates (211) being connected to the lower sides of both ends of the through slot; The opening and closing plates (220) are hingedly mounted on the frame (210) at their upper ends. The two opening and closing plates (220) and the two side plates (211) enclose the accommodating cavity (201). The lower ends of the two opening and closing plates (220) and the lower ends of the two side plates (211) form the opening (2011). The two opening and closing plates (220) have at least a coating state and a closed state. When in the coating state, the lower ends of the two opening and closing plates (220) are spaced apart, so that the opening (2011) is opened. When in the closed state, the lower ends of the two opening and closing plates (220) are in contact with each other, so that the opening (2011) is closed.

3. A fixed rotating fixture for a flaw detector according to claim 2, characterized in that: The side plate (211) is a telescopic side plate and the lower end is arc-shaped so as to fit with the wall of the cylindrical workpiece.

4. The fixed rotating fixture of a flaw detector according to claim 2, characterized in that: The coupling liquid containing coating assembly (200) further comprises: An elastic member (230), one end of the elastic member (230) acts on the opening and closing plates (220), and the other end acts on the frame (210), providing a force for the two opening and closing plates (220) to move closer to each other and maintain a closed state.

5. The fixed rotating fixture of a flaw detector according to claim 4, characterized in that: The opening and closing plate (220) is connected to a guide plate perpendicular to the hinge axis of the opening and closing plate (220), and the guide plate has a push guide groove (221). The coupling liquid containing coating assembly (200) further includes: A swing pusher (240) is hingedly arranged on the frame (210) and has a sliding pusher portion (241). The sliding pusher portion (241) and the push guide groove (221) can be rotated and slidably matched with each other to push the opening and closing plate (220) from a closed state to a coating state.

6. The fixed rotating fixture of a flaw detector according to claim 5, characterized in that: The lower end of the swing push piece (240) has an abutment portion (242), and the abutment portion (242) is used to abut against the cylinder wall of the cylindrical workpiece and can open the opening and closing plate (220) under the push of the cylindrical workpiece.

7. A fixed rotating fixture for a flaw detector according to any one of claims 2 to 6, characterized in that: The lower end of the opening and closing plate (220) has a flexible portion (222), and the flexible portion (222) is used to fit with the wall of a cylindrical workpiece.

8. A fixed rotating fixture for a flaw detector according to any one of claims 2 to 6, characterized in that: The cavity wall of the accommodating cavity (201) has an adsorption layer (202), the adsorption layer (202) is used to adsorb and flow out the coupling glue, and the adsorption layer (202) is installed on the side walls of the opening and closing plate (220) and the side plate (211).

9. A fixed rotating fixture for a flaw detector according to any one of claims 1 to 6, characterized in that: The material clamping member (100) is configured to be capable of rotation, lifting, and translation; and / or The flaw detection assembly (300) is configured to be capable of lifting and translating.

10. The fixed rotating fixture of a flaw detector according to claim 9, characterized in that: The flaw detection assembly (300) comprises an ultrasonic flaw detection head (310).

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