Circular end piece detection device and method of detecting same

Abstract

The present application belongs to the technical field of detection, and particularly relates to a circular end piece detection device and a detection method thereof. One of the circular end piece detection devices comprises: a detection assembly arranged on one side of a rotating platform; a feeding mechanical arm; and a tray assembly arranged on one side of the rotating platform and used for containing the circular end pieces, which comprises: a tray horizontally arranged and provided with a plurality of placing holes in a matrix manner; a leveling module radially and slidingly arranged in the placing hole; and a driving member vertically arranged below the tray and linked with the leveling module. When the driving member moves downward, the leveling module radially slides outward to make the circular end piece fall into the placing hole. When the driving member moves upward, the leveling module radially slides inward to correct the circular end piece to be horizontally placed. The feeding mechanical arm carries the circular end piece to a fixed station by negative pressure, and the detection assembly is suitable for detecting whether the size of the circular end piece is qualified.

Description

Technical Field

[0001] The present invention belongs to the field of detection technology, and specifically relates to testing using optical means, and more particularly to a circular end piece detection device and a detection method thereof. Background Art

[0002] In the new energy industry, especially in battery module production, the upper and lower end covers of cylindrical batteries are circular end pieces, and the diameters of the circular end pieces are required to be consistent during the production process.

[0003] In the prior art, to ensure the stability of the circular end piece supported by the tray, a placement hole is typically provided on the tray to hold the circular end piece in place. The inner diameter of the placement hole is typically slightly larger than the diameter of the circular end piece (with a clearance of approximately 0.5-1 mm). This can cause the circular end piece to easily abut against the inner wall of the placement hole and tilt when placed inside.

[0004] When using a robotic arm to transport circular end pieces, the arm's negative pressure suction surface doesn't make sufficient contact with the surface of the end piece, causing it to slip during handling. When the robotic arm carries a tilted end piece to the inspection probe, it can't be accurately placed into the inspection station, increasing the error rate during inspection and leading to technical problems such as misjudgment.

[0005] Based on this need, a circular end piece detection device and a detection method thereof are designed.

[0006] It should be noted that the above information disclosed in this background technology section is only used to understand the background technology of the present application concept, and therefore, the above description is not considered to constitute information of related technology. Summary of the Invention

[0007] The embodiments of the present disclosure at least provide a circular end piece detection device and a working method thereof.

[0008] In a first aspect, an embodiment of the present disclosure provides a circular end piece detection device, comprising:

[0009] A rotating platform is rotatably mounted on a workbench and has a number of testing stations evenly distributed around the circumference;

[0010] A detection component is arranged on one side of the rotating platform;

[0011] The loading robot is set on the side of the rotating platform away from the detection component and is used to transport the round end piece under negative pressure;

[0012] The tray assembly is provided on one side of the rotating platform and is used to hold the circular end pieces, comprising:

[0013] The material tray is arranged horizontally and has a plurality of placement holes provided in a matrix;

[0014] a leveling module, radially slidingly disposed in the placement hole;

[0015] The driving part is set below the material tray and is linked with the leveling module;

[0016] The driving member moves downward to drive the leveling module to slide radially outward, so that the circular end piece falls into the placement hole;

[0017] When the driving member moves upward, the leveling module slides radially inward to correct the circular end piece so that it is placed horizontally;

[0018] The loading robot carries the circular end piece to the inspection station under negative pressure, and the inspection component is suitable for inspecting whether the size of the circular end piece is qualified.

[0019] In an optional embodiment, a plurality of accommodating cavities are provided on the tray, and the accommodating cavities are coaxially arranged with the placement holes and have an inner diameter larger than that of the placement holes;

[0020] The leveling module comprises: a slider which is slidably arranged in the accommodating cavity, and the inner wall of which is provided with an arc surface matching the circular end piece;

[0021] A tension spring, two ends of which are respectively arranged on the inner wall of the accommodating cavity and the outer wall of the slider;

[0022] Wherein, when the driving member moves upward, it pushes the slider to slide radially inward;

[0023] When the driving member moves downward, the tension spring pulls the slider to slide radially outward.

[0024] In an optional embodiment, a first inclined surface is provided on the lower portion of the outer wall of the slider, and the angle between the first inclined surface and the horizontal plane is 55°±2°.

[0025] In an optional embodiment, the driving member includes: a driving plate, which is arranged parallel to the bottom wall of the material tray and has a gap with the bottom wall of the material tray;

[0026] A plurality of oil draining platforms are arranged on the driving plate and are arranged to be lifted and lowered in the accommodating cavity;

[0027] A second inclined surface, which is located on the side wall of the oil draining platform and matches the first inclined surface;

[0028] When the driving plate moves upward, the second inclined surface abuts against the first inclined surface to push each of the sliding blocks to slide radially inward.

[0029] In an optional embodiment, an oil storage cavity is provided in the driving plate;

[0030] The driving plate is provided with a plurality of oil holes, which are connected to the oil storage cavity and are located below the slider;

[0031] When the driving plate moves downward, the tension spring pulls the slider to slide radially outward to open the oil hole, and the oil on the oil draining table flows into the oil storage chamber through the oil hole.

[0032] In an optional embodiment, a driving cylinder is provided on the workbench, and the end of the piston rod of the driving cylinder is fixed to the bottom wall of the driving plate.

[0033] In an optional embodiment, a liquid level sensor is provided in the oil storage chamber, and an alarm is triggered when the oil accumulation exceeds a threshold value;

[0034] An oil drain pipe is provided on the side wall of the driving plate, and the oil drain pipe is communicated with the oil storage cavity.

[0035] In an optional embodiment, the negative pressure suction cup of the loading robot is connected to a multi-stage buffer cylinder with a buffer stroke of 10-15 mm, which is used to compensate for the placement height tolerance of the circular end piece.

[0036] In an optional embodiment, the detection component includes:

[0037] The detection bracket is vertically set on the workbench.

[0038] an eddy current thickness gauge, which is fixed to the side wall of the detection bracket;

[0039] an optical imaging unit, which is fixed to the side wall of the detection bracket and located above the eddy current thickness gauge;

[0040] The rotating platform drives the circular end piece to move to the detection station, and the eddy current thickness gauge and the optical imaging unit are used to measure the thickness of the oil layer and capture the surface coverage uniformity respectively.

[0041] In a second aspect, an embodiment of the present disclosure further provides a detection method for a circular end piece detection device, the detection method comprising:

[0042] The driving member moves downward to drive the leveling module to slide radially outward so that the circular end piece falls into the placement hole;

[0043] When the driving member moves upward, the leveling module slides radially inward to correct the circular end piece so that it is placed horizontally;

[0044] The loading robot carries the circular end piece to the inspection station under negative pressure, and the rotating platform drives the circular end piece to rotate to the inspection station. The inspection component is suitable for inspecting whether the size of the circular end piece is qualified.

[0045] The present invention has the beneficial effect of providing a circular end piece detection device and method. Through the coordination of a tray assembly, a loading robot, and a detection assembly, before detection, a leveling module and a driver cooperate, with the driver moving upward to drive the leveling module radially inward, thereby automatically correcting the horizontality of the circular end piece, completely resolving the problem of circular end piece tilting caused by placement hole gaps. A horizontal circular end piece not only improves the stability of the negative pressure adsorption of the loading robot, but also ensures the detection accuracy of the detection probe.

[0046] Other features and advantages of the present invention will be described in the following description, and in part will become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description and the drawings.

[0047] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are specifically cited herein and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in related technologies, the following briefly introduces the drawings required for use in the specific embodiments or related technical descriptions. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0049] Figure 1 A three-dimensional diagram of a circular end piece detection device provided in an embodiment of the present disclosure;

[0050] Figure 2 A perspective view of a tray assembly provided in accordance with an embodiment of the present disclosure;

[0051] Figure 3 An internal cross-sectional view of a tray assembly provided in accordance with an embodiment of the present disclosure;

[0052] Figure 4 A sectional perspective view of a leveling module and a driving plate provided in an embodiment of the present disclosure;

[0053] Figure 5 A schematic diagram of the leveling module sliding outwards provided in an embodiment of the present disclosure;

[0054] Figure 6 A three-dimensional diagram of a loading robot provided in an embodiment of the present disclosure;

[0055] Figure 7 A three-dimensional diagram of the rotating platform and detection assembly provided in an embodiment of the present disclosure.

[0056] In the picture:

[0057] 1. Rotating platform; 10. Inspection station;

[0058] 2. Detection component; 21. Detection bracket; 22. Eddy current thickness gauge; 23. Optical imaging unit;

[0059] 3. Loading robot; 31. Negative pressure suction cup; 32. Buffer cylinder;

[0060] 4. Tray assembly; 41. Material tray; 410. Placement hole; 411. Accommodation cavity;

[0061] 42. Leveling module; 421. Slider; 422. Tension spring; 423. First inclined surface; 424. Limit block;

[0062] 43. Driving member; 431. Driving plate; 432. Oil draining platform; 433. Second inclined surface; 434. Oil storage cavity; 435. Oil hole; 44. Driving cylinder;

[0063] 5. Workbench. DETAILED DESCRIPTION

[0064] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of them. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0065] In this document, when it is mentioned that a first component is located on a second component, this may mean that the first component may be directly formed on the second component, or that a third component may be interposed between the first component and the second component. In addition, in the drawings, the thickness of components may be exaggerated or reduced in order to effectively describe technical content.

[0066] Herein, example embodiments of the present disclosure will be described in more detail with reference to the accompanying drawings. As used herein, expressions such as "at least one of..." when following a list of elements modify the entire list of elements, rather than modifying individual elements in the list. For example, the expression "at least one of a, b, and c" should be understood to include only a, only b, only c, both a and b, both a and c, both b and c, or all of a, b, and c.

[0067] The terms used herein are only used to describe specific exemplary configurations and are not intended to be limiting. As used herein, the singular articles "a", "an" and "the" may also be intended to include plural forms, unless otherwise clearly indicated herein. The terms "comprise", "include" and "have" are inclusive and therefore specify the presence of features, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, steps, operations, elements, components and / or combinations thereof. The method steps, processes and operations described herein should not be interpreted as necessarily requiring them to be performed in the particular order discussed or shown, unless specifically identified as an execution order. Additional or alternative steps may be adopted.

[0068] As used herein, the phrases "in one embodiment," "according to one embodiment," "in some embodiments," and the like generally refer to the fact that the particular feature, structure, or characteristic following the phrase may be included in at least one embodiment of the present disclosure. Thus, a particular feature, structure, or characteristic may be included in more than one embodiment of the present disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, the terms "example," "exemplary," and the like are used to "serve as an example, instance, or illustration." Any implementation, aspect, or design described herein as "example" or "exemplary" is not necessarily to be construed as preferred or advantageous over other implementations, aspects, or designs. Instead, the use of the terms "example," "exemplary," and the like is intended to present concepts in a concrete manner.

[0069] After research, it was found that in the relevant technology, in order to ensure the stability of the material tray supporting the circular end piece, a placement hole for limiting the circular end piece is usually opened on the material tray. The inner diameter of the placement hole is usually slightly larger than the diameter of the circular end piece (the gap is about 0.5-1mm). (If the inner diameter of the placement hole is too large, it can prevent the circular end piece from tilting after being placed. However, if the inner diameter of the placement hole is too large, it cannot ensure that the axis of the circular end piece and the axis of the placement hole are almost coincident, resulting in the robot negative pressure adsorption of the circular end piece, and the positioning accuracy of the circular end piece when placing it on the processing station is affected.) When the circular end piece is placed in the placement hole, it is easy to abut against the inner wall of the placement hole and tilt, resulting in insufficient contact between the negative pressure adsorption surface of the robot and the surface of the circular end piece, and slippage during transportation. The circular end piece in an inclined state cannot be accurately placed into the detection station by the robot (because the outer wall of the circular end piece is limited by the inner wall of the placement hole, causing it to tilt, and its axis is misaligned with the axis of the negative pressure suction cup of the robot. Therefore, when the circular end piece is placed with the axis of the negative pressure suction cup as the reference point, the circular end piece cannot accurately detect the axis of the station), resulting in an increase in the error rate during detection and causing technical problems such as misjudgment.

[0070] In related technologies, existing solutions (such as directional arrangement of vibration plates) cannot adapt to the deformation characteristics of thin-walled circular end pieces, and positioning is time-consuming in high-speed detection scenarios, resulting in low efficiency.

[0071] Based on this need, a circular end piece detection device and a detection method thereof are designed.

[0072] The defects in the above solutions and the causes of their occurrence are the results obtained by the inventors after practice and careful research. Therefore, the process of discovering the above problems and the solutions proposed by the present disclosure in this article should be the contributions made by the inventors to the present disclosure during the disclosure process.

[0073] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0074] The following embodiments of the present invention are described in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features therein may be combined with each other.

[0075] like Figures 1 to 7 As shown, at least one embodiment provides a circular end piece detection device, comprising:

[0076] The rotating platform 1 is rotatably arranged on the workbench 5 and has a plurality of detection stations 10 evenly distributed around the circumference. The rotating platform 1 is fixed to the workbench 5 by a servo motor. The rotating platform 1 has no less than 6 detection stations 10 evenly distributed around the circumference, and the station spacing accuracy is ±0.05mm.

[0077] Reference Attachment Figure 7 , a detection component 2 is arranged on one side of the rotating platform 1; the detection component 2 includes: a detection bracket 21, which is vertically arranged on the workbench 5, an eddy current thickness gauge 22, which is fixed on the side wall of the detection bracket 21, the accuracy of the eddy current thickness gauge 22 is ±0.55μm, and when the circular end piece moves to the detection station, the eddy current thickness gauge 22 is 3mm away from the workpiece; an optical imaging unit 23, which is fixed on the side wall of the detection bracket 21 and is located above the eddy current thickness gauge 22; the optical imaging unit 23 is a 5-megapixel CCD, a stroboscopic light source, wherein the rotating platform 1 drives the circular end piece to move to the detection station, the eddy current thickness gauge 22 and the optical imaging unit 23 are used to measure the oil layer thickness and capture the surface coverage uniformity, respectively.

[0078] Reference Attachment Figure 6 The loading robot 3, located on the side of the rotating platform 1 away from the inspection assembly 2, is used to transport the circular end pieces under negative pressure. Its negative pressure suction cup 31 is connected to a multi-stage cushioning cylinder 32 with a cushioning stroke of 10-15mm to compensate for the height tolerance of the circular end pieces. The negative pressure suction cup 31 is connected to a three-stage cushioning cylinder 3232 with a vacuum pressure of -80kPa.

[0079] Reference Attachment Figure 3 The tray assembly 4 is arranged on one side of the rotating platform 1 and is used to hold the circular end pieces. It includes: a material tray 41, which is arranged horizontally and has a plurality of placement holes 410 in a matrix; a leveling module 42, which is radially slidingly arranged in the placement holes 410; a driving member 43, which is arranged to be lifted and lowered below the material tray 41 and is linked to the leveling module 42; wherein the driving member 43 moves downward to drive the leveling module 42 to slide radially outward so that the circular end piece falls into the placement hole 410; when the driving member 43 moves upward, the leveling module 42 slides radially inward to correct the circular end piece so that it is placed horizontally; the loading robot 3 transports the circular end piece to the inspection station 10 under negative pressure, and the inspection assembly 2 is suitable for detecting whether the size of the circular end piece is qualified. In this embodiment, the circular end piece is the raw material of the cylindrical battery. During the storage process, the circular end piece needs to be oiled to avoid rust.

[0080] Reference Attachment Figure 4 The tray 41 is provided with a plurality of accommodating cavities 411, which are coaxially arranged with the placement hole 410 and have an inner diameter larger than that of the placement hole 410. The diameter of the accommodating cavities 411 is 5-10 mm larger than the diameter of the placement hole 410. The leveling module 42 includes a slider 421, which is slidably disposed within the accommodating cavity 411. The inner wall of the slider 421 is provided with an arc surface that matches the curvature of the circular end piece. The top wall of the slider 421 is provided with a T-shaped limit block 424. The top wall of the accommodating cavity 411 is provided with a plurality of slide grooves that are compatible with the limit blocks 424. Each limit block 424 corresponds to one slide groove, and the extension direction of the slide groove is consistent with the expansion and contraction direction of the tension spring 422. The cooperation between the stopper 424 and the slideway ensures that the slider 421 can only move horizontally within the accommodating cavity 411. When the drive plate 431 moves downward, the cooperation between the stopper 424 and the slideway prevents the slider 421 from moving downward. A first inclined surface 423 is provided on the lower portion of the outer wall of the slider 421. The angle between the first inclined surface 423 and the horizontal plane is 55°±2°. Figure 5 Where a represents the angle between the first inclined surface 423 and the horizontal plane. A tension spring 422 has two ends respectively located on the inner wall of the accommodating cavity 411 and the outer wall of the slider 421. The tension spring 422 has a stiffness coefficient of 1.2 N / mm and a preload force of 5 N. When the driver 43 moves upward, it pushes the slider 421 radially inward. When the driver 43 moves downward, the tension spring 422 pulls the slider 421 radially outward.

[0081] Continue to refer to the attached Figure 4The driving member 43 includes: a driving plate 431, which is arranged parallel to the bottom wall of the material tray 41 and has a gap with the bottom wall of the material tray 41; a driving cylinder 44 suitable for driving the driving plate 431 to move up and down relative to the material tray 41. A plurality of oil draining platforms 432 are arranged on the driving plate 431 and are arranged to be lifted and lowered in the accommodating cavity 411; a second inclined surface 433 is located on the side wall of the oil draining platform 432 and matches the first inclined surface 423. Figure 5 When the driving plate 431 moves upward, the second inclined surface 433 contacts the first inclined surface 423 to push each of the sliders 421 to slide radially inward. When the driving plate 431 moves downward, Figure 5 F1 in the figure represents the force that drives the plate 431 to move downward; the second inclined surface 433 is disengaged from the first inclined surface 423 , and the tension spring 422 pulls the slider 421 to slide radially outward to open the oil hole 435 . Figure 5 F2 represents the outward sliding force exerted on the slider 421. An oil reservoir 434 is defined within the drive plate 431. The drive plate 431 is provided with a plurality of oil holes 435, which communicate with the oil reservoir 434 and are located below the slider 421. When the drive plate 431 moves downward, the tension spring 422 pulls the slider 421 radially outward to open the oil holes 435, allowing the oil on the oil draining platform 432 to flow through the oil holes 435 into the oil reservoir 434. The drive cylinder 44 pushes the drive plate 431 upward, causing the second inclined surface 433 of the oil draining platform 432 to contact the first inclined surface 423 of the slider 421, thereby generating a radial thrust that causes each slider 421 to slide radially inward. This inward sliding of each slider 421 is suitable for correcting the circular end piece, thereby improving the levelness of the circular end piece.

[0082] Refer again to the attached Figure 4 The oil storage chamber 434 is equipped with a liquid level sensor that triggers an alarm when the oil accumulation exceeds a threshold. A drain pipe is provided on the side wall of the drive plate 431 and communicates with the oil storage chamber 434. The drain pipe is connected to a negative pressure recovery device. When the liquid level sensor detects that the oil accumulation exceeds a threshold, the negative pressure recovery device vacuums the oil in the oil storage chamber 434.

[0083] Reference Attachment Figure 2 A driving cylinder 44 is provided on the workbench 5, and the end of the piston rod of the driving cylinder 44 is fixed to the bottom wall of the driving plate 431. The driving cylinder 44 is used to drive the driving plate 431 to move up and down.

[0084] At least one embodiment provides a method for detecting a circular end piece detection device, the method comprising:

[0085] The driving member 43 moves downward to drive the leveling module 42 to slide radially outward, so that the circular end piece falls into the placement hole 410;

[0086] When the driving member 43 moves upward, the leveling module 42 slides radially inward to correct the circular end piece so that it is placed horizontally;

[0087] The loading robot 3 carries the circular end piece to the inspection station 10 under negative pressure, and the rotating platform 1 drives the circular end piece to rotate to the inspection station. The inspection component 2 is suitable for inspecting whether the size of the circular end piece is qualified.

[0088] In the description of the embodiments of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; direct or indirect connections through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0089] With the above-described preferred embodiments of the present invention as a guide, and with reference to the above description, relevant personnel are fully capable of making various changes and modifications without departing from the technical scope of this invention. The technical scope of this invention is not limited to the contents of the specification and must be determined according to the scope of the claims.

Claims

1. A circular end piece detection device, characterized in that: include: A rotating platform (1) is rotatably mounted on a workbench (5) and has a plurality of detection stations (10) uniformly distributed around the circumference; A detection component (2) is arranged on one side of the rotating platform (1); A loading robot (3) is provided on a side of the rotating platform (1) away from the detection component (2) and is used for negative pressure transport of the circular end piece; The tray assembly (4) is arranged on one side of the rotating platform (1) and is used to hold the circular end pieces, comprising: A material tray (41) is arranged horizontally and has a plurality of placement holes (410) formed in a matrix; a leveling module (42) radially slidably disposed in the placement hole (410); A driving member (43) is arranged below the material tray (41) and is linked to the leveling module (42); The driving member (43) moves downward to drive the leveling module (42) to slide radially outward, so that the circular end piece falls into the placement hole (410); When the driving member (43) moves upward, the leveling module (42) slides radially inward to correct the circular end piece so that it is placed horizontally; The loading manipulator (3) transports the circular end piece to the inspection station (10) under negative pressure, and the inspection component (2) is suitable for inspecting whether the size of the circular end piece is qualified; The material tray (41) is provided with a plurality of accommodating cavities (411), the accommodating cavities (411) are coaxially arranged with the placement holes (410), and the inner diameters of the accommodating cavities (411) are larger than those of the placement holes (410); The leveling module (42) comprises: a slider (421) which is slidably arranged in the accommodating cavity (411), and the inner wall of which is provided with an arc surface matching the circular end piece; A tension spring (422), two ends of which are respectively arranged on the inner wall of the accommodating cavity (411) and the outer wall of the slider (421); When the driving member (43) moves upward, it pushes the slider (421) to slide radially inward; When the driving member (43) moves downward, the tension spring (422) pulls the slider (421) to slide radially outward; A first inclined surface (423) is provided at the lower portion of the outer wall of the sliding block (421), and the angle between the first inclined surface (423) and the horizontal plane is 55°±2°; The driving member (43) comprises: a driving plate (431) which is arranged parallel to the bottom wall of the material tray (41) and has a gap with the bottom wall of the material tray (41); A plurality of oil draining platforms (432) are arranged on the driving plate (431) and are arranged to be lifted and lowered in the accommodating cavity (411); A second inclined surface (433) is located on a side wall of the oil draining platform (432) and matches the first inclined surface (423); When the driving plate (431) moves upward, the second inclined surface (433) abuts against the first inclined surface (423) to push each of the sliders (421) to slide radially inward; An oil storage cavity (434) is provided in the driving plate (431); The driving plate (431) is provided with a plurality of oil holes (435), the oil holes (435) being in communication with the oil storage cavity (434) and being located below the slider (421); When the driving plate (431) moves downward, the tension spring (422) pulls the slider (421) to slide radially outward to open the oil hole (435), and the oil on the oil draining platform (432) flows into the oil storage chamber (434) through the oil hole (435).

2. The circular end piece detection device according to claim 1, characterized in that: A driving cylinder (44) is provided on the workbench (5), and the end of the piston rod of the driving cylinder (44) is fixed to the bottom wall of the driving plate (431).

3. The circular end piece detection device according to claim 1, wherein: A liquid level sensor is provided in the oil storage cavity (434), and an alarm is triggered when the oil accumulation exceeds a threshold value; An oil drain pipe is provided on the side wall of the driving plate (431), and the oil drain pipe is in communication with the oil storage chamber (434).

4. The circular end piece detection device according to claim 1, wherein: The negative pressure suction cup of the loading manipulator (3) is connected to a multi-stage buffer cylinder (32) with a buffer stroke of 10-15 mm, which is used to compensate for the placement height tolerance of the circular end piece.

5. The circular end piece detection device according to claim 1, characterized in that: The detection component (2) comprises: The detection bracket (21) is vertically arranged on the workbench (5). An eddy current thickness gauge (22) is fixed to the side wall of the detection bracket (21); An optical imaging unit (23) fixed to a side wall of the detection bracket (21) and located above the eddy current thickness gauge (22); The rotating platform (1) drives the circular end piece to move to the detection station, and the eddy current thickness gauge (22) and the optical imaging unit (23) are used to measure the thickness of the oil layer and capture the surface coverage uniformity, respectively.

6. A detection method for a circular end piece detection device, characterized in that: Using the circular end piece detection device according to any one of claims 1 to 5, the detection method includes: The driving member (43) moves downward to drive the leveling module (42) to slide radially outward, so that the circular end piece falls into the placement hole (410); When the driving member (43) moves upward, the leveling module (42) slides radially inward to correct the circular end piece so that it is placed horizontally; The loading manipulator (3) carries the circular end piece to the inspection station (10) under negative pressure, and the rotating platform (1) drives the circular end piece to rotate to the inspection station. The inspection component (2) is suitable for inspecting whether the size of the circular end piece is qualified.

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