A fixed rotary tool for a flaw detector

Abstract

The present disclosure relates to the technical field of workpiece flaw detection, and an embodiment of the present disclosure provides a flaw detector fixing and rotating tool for detecting flaws in a cylindrical workpiece. The tool comprises a material clamping part for clamping the cylindrical workpiece from both ends and enabling the cylindrical workpiece to rotate around an axis; a coupling liquid containing and coating assembly movably arranged above the material clamping part, having a containing cavity for containing coupling liquid, the lower end of the containing cavity having an opening, the coupling liquid containing and coating assembly being configured to abut and fit against the barrel wall of the cylindrical workpiece after moving, so that the opening is blocked by the barrel wall of the cylindrical workpiece; and a flaw detection assembly movably arranged above the coupling liquid containing and coating assembly and configured to enter the containing cavity after moving to abut the barrel wall of the cylindrical workpiece. The above technical solution solves the technical problem of low coupling liquid coating efficiency and poor effect of the flaw detector fixing and rotating tool in the prior art when detecting flaws.

Description

TECHNICAL FIELD

[0001] Embodiments of the present disclosure relate to the technical field of workpiece flaw detection, in particular, to a fixed rotary tool for a flaw detector. BACKGROUND

[0002] In the flaw detection operation of the cylindrical workpiece, the rotary tool is a key equipment to ensure the comprehensiveness of detection, which enables the flaw detection probe to scan the inner and outer walls of the workpiece by driving the workpiece to rotate stably around the axis. However, the existing rotary tool has some defects in the coupling liquid coating link, resulting in low efficiency. On the one hand, the traditional manual pre-coating method not only requires additional operation time, but also is difficult to ensure uniformity of coating, especially for large-sized cylindrical workpieces, the inner wall coating is time-consuming and laborious, and is prone to leakage or liquid accumulation. On the other hand, some rotary tools integrated with coating devices are limited by structural design, either the coating range is limited and needs to be adjusted multiple times in coordination with the workpiece rotation, or the coupling liquid is prone to splashing during rotation, which cannot realize efficient and uniform coating during the workpiece rotation, thereby slowing down the entire flaw detection process and failing to meet the efficient detection demand in batch production scenarios. SUMMARY

[0003] To overcome the above-mentioned defects, embodiments of the present disclosure provide a fixed rotary tool for a flaw detector, which solves the technical problem of low efficiency and poor effect of coupling liquid coating in the existing fixed rotary tool for a flaw detector during flaw detection.

[0004] According to one aspect, at least one embodiment of the present disclosure provides a fixed rotary tool for a flaw detector, used for flaw detection of a cylindrical workpiece, comprising:

[0005] A material clamping piece, configured to clamp the cylindrical workpiece from both ends and enable the cylindrical workpiece to rotate around the shaft;

[0006] A coupling liquid containing and coating assembly, movably arranged above the material clamping piece, having a containing cavity for containing coupling liquid, the lower end of the containing cavity having an opening, the coupling liquid containing and coating assembly being configured to abut and fit against the barrel wall of the cylindrical workpiece after moving, so that the opening is blocked by the barrel wall of the cylindrical workpiece;

[0007] A flaw detection assembly, movably arranged above the coupling liquid containing and coating assembly, and configured to enter the containing cavity after moving to abut the barrel wall of the cylindrical workpiece.

[0008] For example, the coupling liquid containing and coating assembly of the fixed rotary tool for a flaw detector provided by at least one embodiment of the present disclosure comprises:

[0009] A frame body is movably arranged above the clamping member, and the frame body has a through slot, and the lower side of both ends of the through slot is connected with a side plate;

[0010] Two opening and closing plates are hingedly arranged on the frame body at the upper end, and the two opening and closing plates and the two side plates form the containing cavity, and the lower end of the two opening and closing plates and the lower end 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 end of the two opening and closing plates is away from each other, so that the opening is opened, and when in the closed state, the lower end of the two opening and closing plates is abutted, so that the opening is closed.

[0011] For example, the disclosed embodiment provides a fixed rotating tool for a flaw detector, and the side plate is a telescopic side plate, and the lower end is arc-shaped to fit the barrel wall of the barrel-shaped workpiece.

[0012] For example, the disclosed embodiment provides a fixed rotating tool for a flaw detector, and the coupling liquid containing and coating assembly further comprises:

[0013] An elastic member is arranged at one end of the opening and closing plate and the other end of the frame body, and provides a force for keeping the two opening and closing plates close to each other in the closed state.

[0014] For example, the disclosed embodiment provides a fixed rotating tool for a flaw detector, and the opening and closing plate is connected with a guide plate of a hinge shaft perpendicular to the opening and closing plate, and the guide plate has a pushing guide groove, and the coupling liquid containing and coating assembly further comprises:

[0015] A swing pushing member is hingedly arranged on the frame body, and has a sliding pushing part, and the sliding pushing part is in clearance fit with the pushing guide groove in a rotatable and slidable manner, and is used for pushing the opening and closing plate from the closed state to the coating state.

[0016] For example, the disclosed embodiment provides a fixed rotating tool for a flaw detector, and the lower end of the swing pushing member has an abutting part, and the abutting part is used for abutting with the barrel wall of the barrel-shaped workpiece and can be opened under the pushing of the barrel-shaped workpiece.

[0017] For example, the disclosed embodiment provides a fixed rotating tool for a flaw detector, and the lower end of the opening and closing plate has a flexible part, and the flexible part is used for fitting the barrel wall of the barrel-shaped workpiece.

[0018] For example, the disclosed embodiment provides a fixed rotating tool for a flaw detector, and the cavity wall of the containing cavity has an adsorption layer, and the adsorption layer is used for adsorbing and flowing out the coupling adhesive, and the adsorption layer is installed on the side wall of the opening and closing plate and the side plate.

[0019] For example, at least one embodiment of this disclosure provides a fixed rotating fixture for a flaw detector, wherein the clamping member is configured to rotate, lift, and translate; and / or

[0020] The flaw detection component is configured to be able to move up, down, and translate.

[0021] For example, at least one embodiment of this disclosure provides a fixed rotating fixture for a flaw detector, wherein the flaw detection component includes an ultrasonic flaw detector head.

[0022] The beneficial effects of the embodiments disclosed herein are as follows:

[0023] In this disclosure, the coupling fluid containing and coating assembly can simultaneously apply the coupling fluid while the cylindrical workpiece is rotating, avoiding the additional time consumption of traditional manual pre-coating. Through the moving mechanism and the abutment-fitting structure, efficient and uniform coating of the entire cylindrical wall of the workpiece can be achieved, reducing missed coating and fluid accumulation, and improving the accuracy of flaw detection. This fixture integrates functions such as clamping, rotation, coupling fluid coating, and flaw detection, realizing integrated operation of the flaw detection process, reducing the connection time between each step, and improving the overall flaw detection efficiency, making it particularly suitable for the high-efficiency inspection needs in mass production scenarios. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this disclosure, the accompanying drawings used in the description of the embodiments of this disclosure will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of this disclosure and these drawings without any creative effort.

[0025] Figure 1 This is a three-dimensional structural diagram of a flaw detector fixed rotating fixture in one embodiment of the present disclosure;

[0026] Figure 2 for Figure 1 A magnified schematic diagram of part A in the middle;

[0027] Figure 3 for Figure 1 A side view of the fixed rotating fixture for the flaw detector in the embodiment;

[0028] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure of the middle BB;

[0029] Figure 5 for Figure 4 A magnified schematic diagram of the C-shaped structure.

[0030] In the figure: the clamping piece 100, the coupling liquid containing coating assembly 200, the containing cavity 201, the opening 2011, the adsorption layer 202, the frame body 210, the side plate 211, the opening and closing plate 220, the pushing guide groove 221, the flexible part 222, the elastic piece 230, the swinging pushing piece 240, the sliding pushing part 241, the abutting part 242, the flaw detection assembly 300, the flaw detection head 310. DETAILED DESCRIPTION

[0031] The present disclosure will be further described below in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present disclosure, but not to limit the present disclosure.

[0032] In order to make the drawing simple, only the parts related to the disclosure are shown in each figure, which does not represent the actual structure of the product. In addition, in order to make the drawing simple and easy to understand, in some figures, only one of the parts with the same structure or function is shown, or only one of them is marked. In this paper, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0033] In this paper, it should be noted that, unless otherwise specified and limited, the terms "mounting", "connection", "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific circumstances.

[0034] In the present disclosure, unless otherwise specified and limited, the first feature "on" or "under" the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature "below", "below" and "below" the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the first feature is lower than the second feature in horizontal height.

[0035] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0036] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0037] like Figures 1-5 The diagram illustrates a fixed rotating fixture for flaw detection of a cylindrical workpiece according to an embodiment of the present disclosure. It includes a clamping component 100, a coupling fluid containing and coating assembly 200, and a flaw detection assembly 300. The clamping component 100 clamps the cylindrical workpiece from both ends and allows it to rotate around an axis. The coupling fluid containing and coating assembly 200 is movably disposed above the clamping component 100 and has a receiving cavity 201 for containing coupling fluid. The lower end of the receiving cavity 201 has an opening 2011. The coupling fluid containing and coating assembly 200 is configured to abut against the cylindrical wall of the cylindrical workpiece after movement, such that the opening 2011 is blocked by the cylindrical wall. The flaw detection assembly 300 is movably disposed above the coupling fluid containing and coating assembly 200 and is configured to enter the receiving cavity 201 after movement to abut against the cylindrical wall of the cylindrical workpiece.

[0038] For example, the clamping component 100 consists of two movable gripper units located at both ends of the cylindrical workpiece. The inner side of the gripper unit is designed with an arc-shaped groove that matches the outer wall of the cylindrical workpiece to increase the contact area with the workpiece and improve the stability of clamping.

[0039] The coupling fluid receiving and coating assembly 200 is generally rectangular, with a receiving cavity 201 located inside the assembly. The length of the opening 2011 at the lower end of the receiving cavity 201 is the same as the length of the receiving cavity 201. When it abuts against the wall of the cylindrical workpiece, it can block the opening to prevent coupling fluid leakage. The coupling fluid receiving and coating assembly 200 is located above the clamping member 100 and can move towards the cylindrical workpiece to coat it with coupling fluid. The edge of the opening 2011 at the lower end of the receiving cavity 201 can tightly fit against the wall of the cylindrical workpiece, ensuring that the opening 2011 is completely blocked.

[0040] The flaw detection assembly 300 mainly 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 types. Taking the ultrasonic probe as an example, the probe is made of piezoelectric ceramic material, possessing high sensitivity and resolution, and can accurately detect internal defects in cylindrical workpieces.

[0041] The clamping member 100 can clamp both ends of the cylindrical workpiece. The rotary motor drives the clamping member 100 to rotate through the shaft coupling, so as to realize the rotation of the cylindrical workpiece around the shaft. The distance between the two clamping jaw units of the clamping member 100 can be adjusted to adapt to cylindrical workpieces of different lengths.

[0042] The coupling liquid containing and coating assembly 200 is moved to the upper side of the cylindrical workpiece by the moving mechanism, and then is lowered to make the opening 2011 at the lower end of the containing cavity 201 abut and fit on the cylindrical wall of the cylindrical workpiece, so as to ensure that the opening 2011 is completely blocked. At this time, the coupling liquid in the containing cavity 201 contacts the cylindrical wall of the cylindrical workpiece under the action of gravity, and the coupling liquid is uniformly coated on the cylindrical wall as the cylindrical workpiece rotates. The moving mechanism can move the coupling liquid containing and coating assembly 200 along the axial direction of the cylindrical workpiece, and then cooperate with the rotation of the cylindrical workpiece, so as to realize the coating of the entire cylindrical wall.

[0043] The flaw detection assembly 300 is moved to the upper side of the coupling liquid containing and coating assembly 200 by the moving mechanism, and then the flaw detection probe is made to enter the containing cavity 201 and abut the cylindrical wall of the cylindrical workpiece by the lifting mechanism. The flaw detection probe detects the defects in the cylindrical workpiece by detecting the cylindrical wall during the rotation of the cylindrical workpiece. The moving mechanism of the flaw detection assembly 300 can move along the axial direction of the cylindrical workpiece, so as to realize the flaw detection of the entire cylindrical wall.

[0044] When the coupling liquid is coated, the moving mechanism of the coupling liquid containing and coating assembly 200 is started to move the coupling liquid containing and coating assembly 200 to the upper side of the cylindrical workpiece. Then the lifting mechanism is started to lower the coupling liquid containing and coating assembly 200, so that the opening 2011 at the lower end of the containing cavity 201 abuts and fits on the cylindrical wall of the cylindrical workpiece, so as to ensure that the opening 2011 is completely blocked. At this time, the coupling liquid in the containing cavity 201 contacts the cylindrical wall of the cylindrical workpiece under the action of gravity, and the coupling liquid is uniformly coated on the cylindrical wall as the cylindrical workpiece rotates. At the same time, the moving speed of the coupling liquid containing and coating assembly 200 is adjusted according to the need, so as to move along the axial direction of the cylindrical workpiece, so as to realize the coating of the entire cylindrical wall.

[0045] When the flaw detection is performed, the moving mechanism of the flaw detection assembly 300 is started to move the assembly to the upper side of the coupling liquid containing and coating assembly 200. Then the lifting mechanism is started to make the flaw detection probe enter the containing cavity 201 and abut the cylindrical wall of the cylindrical workpiece, so as to ensure the stable transmission of the flaw detection signal. The flaw detection probe detects the defects in the cylindrical workpiece by detecting the cylindrical wall during the rotation of the cylindrical workpiece. At the same time, the moving speed of the flaw detection assembly 300 is adjusted according to the need, so as to move along the axial direction of the cylindrical workpiece, so as to realize the flaw detection of the entire cylindrical wall.

[0046] The coupling fluid containing coating assembly 200 can simultaneously apply coupling fluid while the cylindrical workpiece rotates, avoiding the extra time consumed by traditional manual pre-coating. Through the moving mechanism and the abutment and bonding structure, efficient and uniform coating of the entire cylindrical wall of the workpiece can be achieved, reducing missed coating and fluid accumulation, and improving the accuracy of flaw detection.

[0047] This fixture integrates functions such as clamping, rotation, coupling liquid coating, and flaw detection, realizing integrated operation of the flaw detection process, reducing the connection time between each step, and improving the overall flaw detection efficiency. It is especially suitable for high-efficiency testing needs in mass production scenarios.

[0048] The adjustable gripper unit of the clamping component 100 can adapt to cylindrical workpieces of different lengths, and the flaw detection component 300 can be replaced with different types of flaw detection probes to meet various flaw detection needs, thereby improving the versatility and adaptability of the equipment.

[0049] In some examples, such as Figure 2 , Figure 5 As shown, the coupling fluid receiving coating assembly 200 includes a frame 210 and two opening and closing plates 220. The frame 210 is movably disposed above the clamping member 100. The frame 210 has a through groove, and side plates 211 are connected to the lower sides of both ends of the through groove. The upper ends of the two opening and closing plates 220 are hinged to the frame 210. The two opening and closing plates 220 and the two side plates 211 form a receiving cavity 201. 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 apart, so that the opening 2011 is open. When in the closed state, the lower ends of the two opening and closing plates 220 abut each other, so that the opening 2011 is closed.

[0050] For example, the frame 210 can be square and ring-shaped, and the side plates 211 on both sides not only serve to contain the coupling fluid, but also provide hinged support for the opening and closing plate 220.

[0051] The frame 210 is mounted above the clamping component 100 via a linear slide rail and a slider. The slider is tightly connected to both sides of the frame 210 and can slide along the linear slide rail. The drive motor is connected via a lead screw, which engages with a nut on the slider to drive the frame 210 to move smoothly along the linear slide rail.

[0052] The hinge plate 220 is a rectangular thin plate. The upper end of the hinge plate 220 is hinged to the side plates 211 on both sides of the frame 210 via a hinge. The hinge point is located at the upper part of the height direction of the side plate 211, so that the hinge plate 220 can swing about the hinge point as an axis.

[0053] In order to control the switching of the opening and closing plates 220 between the coating state and the closed state, each opening and closing plate 220 is equipped with an electric push rod. One end of the electric push rod is connected to the opening and closing plate 220 through a knuckle joint, and the other end is hinged to the side plate 211. When the electric push rod is extended or shortened, it drives the opening and closing plate 220 to swing around the hinge point, so that the opening and closing plate 220 can be flexibly switched between the two states.

[0054] At the lower edge of the opening and closing plate 220, a layer of soft and good sealing rubber strip is installed. When the opening and closing plate 220 is in the closed state, the rubber strips at the lower ends of the two opening and closing plates 220 are in close contact, ensuring that the opening 2011 is completely closed and preventing the coupling liquid from leaking.

[0055] When the opening and closing plate 220 is in the closed state, the two opening and closing plates 220 and the two side plates 211 form a containing cavity 201, which can be used to store the coupling liquid. When it is necessary to coat the coupling liquid, the electric push rod is extended, so that the lower ends of the two opening and closing plates 220 are far apart, the opening 2011 is opened, and the coupling liquid in the containing cavity 201 flows out under the action of gravity and is uniformly coated on the wall of the cylindrical workpiece as the cylindrical workpiece rotates. The moving mechanism of the frame 210 can move the entire coupling liquid containing and coating assembly 200 along the axial direction of the cylindrical workpiece, realizing coating on the entire wall.

[0056] The electric push rod serves as the power source for the state switching of the opening and closing plate 220. By controlling the extension 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 sealing rubber strip ensures the sealing of the containing cavity 201 in the closed state, preventing the coupling liquid from leaking, and in the coating state, the coupling liquid can flow out smoothly for coating.

[0057] 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 the electric push rod, the timing of the coating of the coupling liquid can be controlled, which improves the coating efficiency compared with the traditional coating method.

[0058] The state switching of the coupling liquid containing and coating assembly 200 is closely coordinated with the flaw detection operation, reducing the waiting time, optimizing the entire flaw detection process, and further improving the working efficiency of the flaw detector fixed rotary tool in batch production flaw detection operation.

[0059] In some examples, the side plate 211 is a telescopic side plate and the lower end is arc-shaped to fit the wall of the cylindrical workpiece.

[0060] For example, as shown in FIG. 6, the side plate 211 is a telescopic side plate, and the lower end is arc-shaped to fit the wall of the cylindrical workpiece. Figure 2 、 Figure 5As shown, the side plate 211 is composed of an inner plate and an outer plate, and the inner plate can slide in the outer plate to realize the telescopic function of the side plate. The inner plate and the outer plate are matched through dovetail groove structure, the dovetail groove is arranged on the two side edges of the inner plate, and the corresponding position of the outer plate is processed with a dovetail-shaped guide rail matched therewith, so that the inner plate slides stably in the outer plate and will not fall off, and a spring can be arranged between the outer plate and the inner plate to keep the inner plate extended, and when the inner plate abuts against the cylinder wall of the cylindrical workpiece, the inner plate will slide inward to ensure that the opening and closing plate 220 can abut against the cylinder wall of the cylindrical workpiece downward.

[0061] The lower end of the side plate 211, that is, the inner plate, is designed as an arc shape matched with the outer contour of the cylindrical workpiece. The radius of the arc shape is optimized according to the radius range of common cylindrical workpieces, and through this design, the edges of the opening 2011 can be closely fitted with the cylinder wall of the cylindrical workpiece, effectively preventing the coupling liquid from leaking.

[0062] Because the lower end of the side plate 211 is arc-shaped, the edges of the opening 2011 can always be closely fitted with the cylinder wall of the cylindrical workpiece, and this design ensures that the coupling liquid containing and coating assembly 200 can effectively contain and coat the coupling liquid during the flaw detection process, avoids the leakage of the coupling liquid, and ensures the smooth progress of the flaw detection work. The combination of the telescopic side plate and the arc-shaped lower end enables the tooling to adapt to cylindrical workpieces of different diameters.

[0063] In some examples, as shown in FIG. 6, Figure 2 As shown, the coupling liquid containing and coating assembly 200 further comprises an elastic member 230, one end of the elastic member 230 acting on the opening and closing plate 220, and the other end acting on the frame body 210, providing a force for keeping the two opening and closing plates 220 close to each other in a closed state.

[0064] For example, the elastic member 230 is selected as a tension spring, and the elastic member 230 is installed between the frame body 210 and the opening and closing plate 220. A fixed hook is arranged on the side plate 211 of the frame body 210, close to the hinge point of the opening and closing plate 220. A hook is also arranged at the corresponding position of the opening and closing plate 220. The two ends of the tension spring are hung on the two hooks respectively, and the spring is in a certain pre-tension state during installation to ensure the initial elastic force.

[0065] The elastic force of the elastic member 230 acts on the opening and closing plate 220, so that the opening and closing plate 220 has a tendency to move close to each other, thereby keeping the opening 2011 in a closed state. In this process, the elastic force of the spring can automatically compensate for the position change of the opening and closing plate 220 caused by factors such as vibration and shaking, thereby ensuring the sealing of the containing cavity 201. Even if the cylindrical workpiece rotates to produce a certain vibration during the flaw detection process, the elastic member 230 can always make the opening and closing plate 220 closely fitted to prevent the coupling liquid from leaking.

[0066] In some examples, as shown in FIG. 6, Figure 2 , Figure 5As shown, the opening and closing plate 220 is connected with a guide plate which vertically connects the hinge shaft of the opening and closing plate 220, and the guide plate has a pushing guide groove 221. The coupling liquid containing coating assembly 200 further comprises a swing pushing piece 240 which is hingedly arranged on the frame body 210 and has a sliding pushing part 241 which is rotatably and slidably matched with the pushing guide groove 221, and is used to push the opening and closing plate 220 from the closed state to the coating state.

[0067] For example, the pushing guide groove 221 is arranged on the outer side of the opening and closing plate 220 and is located at the middle or near the lower end. The guide groove is long strip-shaped and extends along the length direction of the opening and closing plate 220.

[0068] The swing pushing piece 240 is composed of a connecting arm and the sliding pushing part 241. One end of the connecting arm is hingedly connected to the side plate 211 of the frame body 210, and the hinge point is located at the upper end of the side plate 211, so that the swing pushing piece 240 can swing around the hinge point. The sliding pushing part 241 is cylindrical, is integrally formed with the connecting arm, and is matched with the pushing guide groove 221, so as to be rotatable and slidable in the guide groove.

[0069] When it is needed to change the opening and closing plate 220 from the closed state to the coating state, the swing pushing piece 240 is swung around the hinge point. With the swing of the swing pushing piece 240, the sliding pushing part 241 slides and rotates in the pushing guide groove 221. Due to the guiding effect of the pushing guide groove 221, the movement of the sliding pushing part 241 drives the opening and closing plate 220 to rotate around the hinge point, so that the lower ends of the two opening and closing plates 220 are away from each other, and the opening 2011 is opened, thereby realizing the change from the closed state to the coating state.

[0070] When the opening and closing plate 220 is in the closed state, the elastic member 230 provides a force to keep the opening and closing plate 220 close to each other. When the swing pushing piece 240 is started, the swing pushing piece 240 overcomes the elastic force of the elastic member 230 and pushes the opening and closing plate 220 to open. When it is needed to return to the closed state, the elastic force of the elastic member 230 makes the opening and closing plate 220 return to the close-to-each-other position, thereby realizing the flexible switching between the two states.

[0071] In some examples, as shown in Figure 2 , Figure 5 As shown, the lower end of the swing pushing piece 240 has an abutting part 242 which is used to abut against the barrel wall of the barrel-shaped workpiece and can be opened by the barrel-shaped workpiece.

[0072] For example, the abutting part 242 is located at the lower end edge of the swing pushing piece 240 and is a protruding columnar or arc-shaped structure. When the opening and closing plate 220 is in the closed state, the sliding pushing part 241 of the swing pushing piece 240 is located at one end of the pushing guide groove 221, and at this time, the abutting part 242 is above the barrel wall of the barrel-shaped workpiece.

[0073] When the coupling liquid containing coating assembly 200 gradually descends from above the cylindrical workpiece, the abutting portion 242 is in close contact with the cylindrical wall of the cylindrical workpiece. Further downward movement will cause the cylindrical wall of the cylindrical workpiece to push the swing push piece 240 to swing around its hinge point. With the swing of the swing push piece 240, the sliding push portion 241 further slides in the push guide groove 221, thereby pushing the lower ends of the opening and closing plate 220 away from each other, opening the opening 2011, and entering the coating state.

[0074] The abutting push of the cylindrical workpiece with the abutting portion 242 serves as the trigger power for the state switching of the opening and closing plate 220. This design enables the abutting portion 242 to automatically trigger the opening and closing plate 220 to change from the closed state to the coating state after contacting the cylindrical workpiece, without the need for additional complex control operations, simplifying the flaw detection process and improving work efficiency.

[0075] In some examples, as shown in Figure 5 The lower end of the opening and closing plate 220 has a flexible portion 222 for conforming to the cylindrical wall of the cylindrical workpiece.

[0076] For example, the flexible portion 222 is made of high-elasticity and wear-resistant silicone rubber material, which has good flexibility and sealing performance and can adapt to cylindrical workpieces with different surface conditions and curvatures. The high-elasticity silicone rubber material of the flexible portion 222 enables it to closely conform to the cylindrical wall of the cylindrical workpiece, and can form a good seal with the cylindrical wall regardless of whether the surface of the cylindrical wall is flat or slightly uneven, preventing leakage of the coupling liquid. The long and moderately wide design increases the contact area with the cylindrical wall, further improving the sealing effect.

[0077] In some examples, as shown in Figure 5 The cavity wall of the containing cavity 201 has an adsorption layer 202 for adsorbing and releasing the coupling glue, and the adsorption layer 202 is installed on the side wall of the opening and closing plate 220 and the side plate 211.

[0078] For example, the adsorption layer 202 is made of superabsorbent resin material, which has strong water absorption and water retention properties and can adsorb a large amount of coupling glue and slowly release it under the action of gravity. At the same time, in order to increase the mechanical strength of the adsorption layer 202, a suitable amount of fiber reinforced material such as glass fiber is added to the superabsorbent resin, so that the adsorption layer 202 can maintain a certain shape after adsorbing the coupling glue and is not easy to break.

[0079] The adsorption layer is closely attached to the inner side wall of the opening and closing plate 220 and the side plate 211. Its thickness is designed according to the space of the containing cavity 201 and the amount of coupling glue required. The surface of the adsorption layer 202 has many small pores which help the adsorption and release of the coupling glue.

[0080] In the preparation stage of the flaw detection work, the coupling glue is injected into the containing cavity 201, and the adsorption layer 202 uses the characteristics of the superabsorbent resin to quickly adsorb a large amount of coupling glue and store it. When the opening and closing plate 220 is opened to enter the coating state, due to the action of gravity and the centrifugal force generated when the cylindrical workpiece rotates, the coupling glue in the adsorption layer 202 slowly flows out through the micro pores and is uniformly distributed on the wall of the cylindrical workpiece. This design makes the containing cavity 201 only need to contain a small amount of coupling glue, which can avoid the accidental overflow of the coupling glue in the containing cavity 201, not only ensures the continuous supply of the coupling glue during the coating process, but also realizes a more uniform coating effect.

[0081] The adsorption layer 202 is distributed on the side wall of the opening and closing plate 220 and the side plate 211 and finally flows to the opening 2011 and flows out from the opening 2011. The existence of the micro pores controls the flow rate of the coupling glue, avoiding the phenomenon of uneven coating caused by the one-time large flow of the coupling glue.

[0082] In some examples, the material clamping part 100 is configured to be able to rotate, lift and translate; the flaw detection assembly 300 is configured to be able to lift and translate.

[0083] For example, the rotating function of the material clamping part 100 is powered by a rotating motor. The rotating motor is installed in the bottom base of the material clamping part 100, and the output shaft of the motor is connected to the rotating main shaft of the material clamping part 100 through a shaft coupling. The rotating main shaft can withstand the large torque generated when the cylindrical workpiece rotates.

[0084] The lifting of the material clamping part 100 is realized by a ball screw lifter. The ball screw lifter is composed of a motor, a screw, a nut and a guide rail. The motor is installed to drive the screw to rotate. The nut is connected to the main frame of the material clamping part 100, and when the screw rotates, the nut moves up and down along the screw, thereby realizing the lifting of the material clamping part 100. The guide rail is installed on both sides of the bottom base of the material clamping part 100, and the main frame of the material clamping part 100 is connected to the guide rail through a sliding block to ensure the stability and accuracy of the lifting process. The lifting stroke is sufficient to meet the flaw detection requirements of cylindrical workpieces of different heights.

[0085] The translation of the material clamping part 100 adopts the combination of linear slide rails and sliding blocks. The linear slide rails are laid horizontally on the workbench, and the sliding blocks are fixedly connected to the bottom base of the material clamping part 100. The linear slide rails are laid horizontally on the workbench, and the sliding blocks are fixedly connected to the bottom base of the material clamping part 100. The screw is driven by a motor, and the screw is matched with the nut on the sliding block to realize the translation of the material clamping part 100 along the linear slide rails.

[0086] The lifting of the flaw detection assembly 300 also adopts a ball screw lifter. The motor drives the screw to rotate. The nut is connected with the probe mounting seat of the flaw detection assembly 300. When the screw rotates, the nut drives the probe mounting seat to move up and down, thereby realizing the lifting of the flaw detection probe. The guide rail is installed on the two side frames of the flaw detection assembly 300. The probe mounting seat is connected with the guide rail through the sliding block, thereby ensuring the stability and accuracy of the lifting process.

[0087] The translation of the flaw detection assembly 300 also adopts the structure of the linear slide rail and the sliding block. The linear slide rail is installed in the horizontal direction on the bracket above the coupling liquid containing coating assembly 200. The sliding block is fixedly connected with the top frame of the flaw detection assembly 300. The screw is driven by the motor. The screw is matched with the nut on the sliding block, thereby realizing the translation of the flaw detection assembly 300 along the linear slide rail. The flaw detection probe can move in the axial direction of the cylindrical workpiece, thereby completing the flaw detection work on the entire cylinder wall.

[0088] In some examples, Figure 5 As shown, the flaw detection assembly 300 comprises a flaw detection head 310. The flaw detection head 310 is an ultrasonic flaw detection head and can be replaced.

[0089] For example, the selected ultrasonic flaw detection head adopts piezoelectric ceramics as the transducer element and realizes the mutual conversion between electric energy and ultrasonic mechanical energy by using the piezoelectric effect. The piezoelectric ceramic sheet is carefully packaged in a metal shell made of high-strength and wear-resistant stainless steel. The shell can not only protect the internal piezoelectric ceramic sheet from the influence of the external environment, but also can enhance the overall structural strength of the flaw detection head. The shape of the shell is designed according to the principle of ergonomics, thereby facilitating the operator to hold and install.

[0090] The flaw detection head 310 is connected with the main frame of the flaw detection assembly 300 through a chuck. When the flaw detection head 310 needs to be replaced, the chuck is loosened, and the flaw detection head 310 can be easily pulled out, thereby realizing the replacement of the ultrasonic flaw detection head.

[0091] It should be noted that the above examples are only used to illustrate the technical solutions of the present disclosure but not limit the present disclosure. 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 can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present disclosure. All of the above should be covered in the scope of the claims of the present disclosure.

Claims

1. A fixed rotating fixture for flaw detection machine, used for flaw detection of cylindrical workpieces, characterized in that, The utility model relates to a kind of coupling liquid containing coating assemblies, including: Clamping piece (100), the clamping piece (100) is used to be clamped by two ends to tubular workpiece, and can make tubular workpiece rotate around shaft; Coupling liquid containing coating assembly (200) is movably arranged above the clamping piece (100), with containing cavity (201) for containing coupling liquid, the lower end of the containing cavity (201) has opening (2011), the coupling liquid containing coating assembly (200) is configured to be abutted after moving and is attached to the cylinder wall of the tubular workpiece, so that the opening (2011) is blocked by the cylinder wall of the tubular workpiece; 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 moving to abut the cylinder wall of tubular workpiece; The coupling liquid containing coating assembly (200) includes: Frame body (210) is movably arranged above the clamping piece (100), and the frame body (210) has through slot, and the lower side of both ends of the through slot is connected with side plate (211); Opening and closing plate (220), two opening and closing plates (220) upper end hinged arrangement is set on the frame body (210), two opening and closing plates (220) and two side plates (211) form the containing cavity (201), and the lower end of two opening and closing plates (220) and the lower end of two side plates (211) form the opening (2011);Two opening and closing plates (220) at least have coating state and closed state, when being in coating state, the lower end of two opening and closing plates (220) is far away from each other, so that the opening (2011) is opened, when being in closed state, the lower end of two opening and closing plates (220) is abutted, so that the opening (2011) is closed.

2. The fixed rotary tooling for a flaw detector of claim 1, wherein, The side plate (211) is telescopic side plate and arc-shaped lower end, to be attached to the cylinder wall of the tubular workpiece.

3. The fixed rotary tooling for a flaw detector of claim 1, wherein, The coupling liquid containing coating assembly (200) further includes: 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 body (210), to provide the force that two opening and closing plates (220) are kept closed by approaching each other.

4. The fixed rotary tooling for a flaw detector of claim 3, wherein, The opening and closing plate (220) is connected with the guide plate perpendicular to the hinge shaft of the opening and closing plate (220), and the guide plate has push guide groove (221), and the coupling liquid containing coating assembly (200) further includes: Swing push piece (240), the swing push piece (240) is hingedly arranged on the frame body (210), and has sliding push part (241), the sliding push part (241) and the push guide groove (221) can be rotatably and slidably clearance fit, for pushing the opening and closing plate (220) from closed state to coating state.

5. The fixed rotary tooling for a flaw detector of claim 4, wherein, The lower end of the swing pushing piece (240) has an abutting part (242) for abutting with the cylinder wall of the cylindrical workpiece and capable of opening the opening and closing plate (220) under the pushing of the cylindrical workpiece.

6. A fixed rotary tool for a flaw detector according to any one of claims 1 to 5, characterized in that, The lower end of the opening and closing plate (220) has a flexible part (222) for adhering with the cylinder wall of the cylindrical workpiece.

7. A rotating fixture for a flaw detector according to any one of claims 1-5, characterized in that, The cavity wall of the accommodating cavity (201) has an adsorption layer (202) for adsorbing and capable of flowing out the coupling glue, and the adsorption layer (202) is installed on the side wall of the opening and closing plate (220) and the side plate (211).

8. A fixed rotary tooling for a flaw detector according to any one of claims 1-5, characterized in that, The material clamping piece (100) is configured to be capable of rotating, lifting and translating; And / or The flaw detection assembly (300) is configured to be capable of lifting and translating.

9. The fixed rotary tooling for a flaw detector according to claim 8, wherein, The flaw detection assembly (300) comprises an ultrasonic flaw detection head (310).

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