Metal workpiece surface coating detection equipment

Abstract

The invention relates to the technical field of coating detection, in particular to metal workpiece surface coating detection equipment which comprises a cross-cut knife and further comprises a guide rail, a connecting beam, a sliding part and a supporting part, the cross-cut knife is arranged below the connecting beam, the connecting beam is arranged on a guide groove of the guide rail through the sliding part, and the supporting part is arranged below the guide rail. According to the metal workpiece surface coating detection equipment, a biform fixing assembly is arranged on the inner side of the supporting piece, the biform fixing assembly is provided with a fixed block and a movable block so as to clamp and position a metal workpiece, the adhesive force of a surface coating can be conveniently tested, and according to the metal workpiece surface coating detection equipment, self-adaptive positioning of the workpiece is achieved by arranging the structure of the biform fixing assembly; the fixed block and the movable block can be compatible with workpiece surfaces of different shapes, fixation is formed through the convex edge and the arc-shaped edge, the movable block drives the concentric-square-shaped rod to horizontally move, the connecting rod mechanism drives the movable piece to be separated from the magnetic attraction positioning groove, the whole system reaches the dynamic balance state, and automatic centering and stable fixing of workpieces can be achieved without external power.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of coating detection, in particular to a metal workpiece surface coating detection equipment. BACKGROUND

[0002] The accurate evaluation of the adhesion of metal surface coating plays a key role in industrial quality control. The traditional detection method widely used in the current industry mainly relies on technical personnel to directly perform manual scratching tests on the surface of the workpiece by hand with a crosshatch cutter. This operation mode has many inherent limitations.

[0003] The reliability of the detection results is largely subject to individual differences of the operators. Different testers have significant differences in force uniformity, scratching speed control and precision of cutter mark spacing, which directly leads to instability and comparability of the test data. Especially when facing irregularly shaped workpieces, it is difficult for manual operation to accurately maintain the perpendicular angle of the cutter to the coating surface, and the angle deviation will seriously affect the quality and depth consistency of the scribed grid.

[0004] It is also difficult to standardize the operation of manually controlled scratching force. Insufficient force may cause the coating to be not completely scribed through, which cannot truly reflect the adhesion condition, while excessive force may scratch the metal substrate, both of which will cause the final adhesion rating result to deviate from the actual situation. In addition, for workpieces with large size differences or production scenes requiring batch detection, repeated manual positioning and testing operations not only consume time and effort, but also introduce additional errors due to operator fatigue.

[0005] There are also obvious deficiencies in the workpiece fixing link. Different shapes of samples usually need to be fixed by using various auxiliary clamps or completely relying on manual support, which significantly increases the operation complexity. More critically, during the scratching test process, the workpiece may experience a small displacement that is difficult to detect, which will cause the scribed grid pattern to deform or the scribed marks to have different depths, directly affecting the accuracy of the test results.

[0006] The above factors combined make it difficult for the traditional detection method to ensure the repeatability and reliability of the test data. The operation process is low in efficiency and has many human interference factors, and it is difficult to meet the strict requirements of modern industrial production on quality control links in terms of high precision, high efficiency and standardization. Especially when facing diversified and large batch detection requirements, the limitations of the traditional method are more prominent.

[0007] Therefore, we propose a metal workpiece surface coating detection equipment. SUMMARY

[0008] One of the technical problems to be solved by the present application is that the traditional manual detection method relies on personnel operation, resulting in poor consistency and low efficiency of the results.

[0009] To solve the above technical problems, the metal workpiece surface coating detection equipment provided by the embodiment of the application comprises a hundred grid cutter, and further comprises a guide rail, a connecting beam, a sliding part, and a support part, the hundred grid cutter is arranged below the connecting beam, the connecting beam is arranged on the guide groove of the guide rail through the sliding part, and the support part is arranged below the guide rail; The inner side of the support part is provided with a double-mode fixing assembly, the double-mode fixing assembly is provided with a fixing block, a moving block, a limiting part, and a movable part, the fixing block is arranged on the inner side of the support part, the moving block is arranged in the fixing block, the limiting part is arranged between the inner sides of the two support parts, and the movable part is arranged above the limiting part; The fixing block and the moving block cooperate to fix the metal workpiece in a fixed state, the movable part is away from the positioning groove of the limiting part, the fixing block and the moving block do not fix the metal workpiece in a relaxed state, and the movable part falls back to the positioning groove of the limiting part.

[0010] In some embodiments, the connecting beam is composed of a plurality of detachable connecting blocks, one end face of the connecting block is provided with a connecting port, the connecting port is provided with a second screw thread, the other end face of the connecting block is provided with a protruding connecting part, the protruding connecting part is provided with a third screw thread, and the second screw thread and the third screw thread are matched in size.

[0011] In some embodiments, the middle connecting block of the connecting beam is provided with a connecting part at the bottom, the connecting part is internally provided with a first screw thread, and the first screw thread is detachably connected with the tail part of the hundred grid cutter.

[0012] In some embodiments, the guide groove is arranged on the top surface of the guide rail, the two ends of the connecting beam are provided with sliding parts, the cross-sectional size of the sliding part is matched with the guide groove, and the sliding part changes its length through the detachable structure like the connecting beam.

[0013] In some embodiments, the fixing block is provided with a through hole for accommodating the moving block, the fixing block is provided with an arc-shaped edge, the end face of the moving block is sequentially provided with an inner contact surface and a convex edge, and the convex edge protrudes from the arc-shaped edge relative to the inner contact surface.

[0014] In some embodiments, the support part is internally provided with a space, the space is provided with a back-shaped rod, one end of the back-shaped rod is fixedly connected with the moving block, the other end of the back-shaped rod is fixedly connected with the connecting rod, and the back-shaped rod can move horizontally in the space.

[0015] In some embodiments, the two sides of the movable part are provided with side plates one, and the side plates one are hingedly connected with the outer side of the connecting rod.

[0016] In some embodiments, the other end of the connecting rod is hingedly connected with a side plate two, and the side plate two is fixedly arranged on the end side of the connecting rod.

[0017] In some embodiments, the bottom of the movable piece is provided with a limiting piece, both ends of the limiting piece are arranged inside the supporting piece and below the connecting rod, the connecting rod, the limiting piece and the connecting beam change the length of themselves through the screw dismountable structure.

[0018] In some embodiments, the limiting piece at the bottom of the movable piece is provided with a positioning groove capable of accommodating the cross section of the bottom of the movable piece, and a magnet capable of attracting the bottom of the movable piece is arranged in the positioning groove.

[0019] The present application has at least the following beneficial effects: 1. The flexible adjustment of the overall length is realized through the dismountable connecting beam structure, the connecting blocks are connected in a screw engagement mode, users can freely assemble the connecting beam with the required length according to the actual size of the workpiece to be measured, the modular design improves the adaptability of the equipment to workpieces of different specifications, and facilitates transportation and storage. The dismountable screw connection between the hundred grid cutter and the connecting beam facilitates tool replacement and maintenance.

[0020] 2. The cooperation of the sliding piece and the guide rail guide groove enables the hundred grid cutter to move smoothly along the predetermined trajectory, the sliding piece itself also has a length adjustment function, further enhancing the adaptability of the equipment to changes in the size of the workpiece, and the guide structure ensures the stability of the movement of the hundred grid cutter during the marking process, providing mechanical support for the repeatability of the test results.

[0021] 3. The self-adaptive positioning of the workpiece is realized through the structure of the double-form fixed assembly, the working of the fixed block and the moving block is compatible with the surfaces of workpieces of different shapes, including flat plates, curved surfaces and circular tubes. When the workpiece contacts the inner contact surface, effective fixation is formed through the cooperation of the convex edge and the arc-shaped edge, the moving block drives the L-shaped rod to move horizontally after being stressed, and then drives the movable piece to separate from the magnetic attraction positioning groove through the connecting rod mechanism, so that the whole system reaches a state of dynamic balance, without the need for external power to realize the automatic centering and stable fixation of the workpiece.

[0022] 4. The space inside the supporting piece provides a track for the horizontal movement of the L-shaped rod, ensuring the stability of the transmission of the fixing force. The connecting rod and the limiting piece also adopt an adjustable length design, which cooperates with the length adjustment function of the connecting beam, so that the equipment can match various workpieces from narrow flat plates to large diameter pipes. The magnetic attraction positioning structure can reliably fix the movable piece in the non-working state to avoid part shaking, and can automatically release the locking when the workpiece is loaded, simplifying the operation process.

[0023] 5、The device improves the efficiency and reliability of coating adhesion detection. The operator only needs to quickly assemble the corresponding length of the part according to the size of the workpiece, and push the workpiece into the fixed area to trigger automatic positioning. After the hundred-grid knife completes accurate marking under the guidance of the guide rail, the fixed system is automatically reset when the workpiece is taken out. The whole process does not need complex clamp adjustment or positioning calibration, especially suitable for continuous detection of workpieces of different shapes and sizes, effectively reducing the operation difficulty and time cost. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a schematic diagram of the overall structure of the present application. Figure 2 It is a schematic diagram of the overall structure of the present application. Figure 1 It is an enlarged view of A in the middle. Figure 3 It is a schematic diagram of the overall structure of the present application. Figure 4 It is a schematic diagram of the overall structure of the present application. Figure 3 It is a sectional view of B-B in the middle. Figure 5 It is a sectional view of B-B in the middle. Figure 3 It is an enlarged view of C in the middle. Figure 6 It is a schematic diagram of the overall structure of the present application. Figure 7 It is a sectional view of D-D in the middle. Figure 6 It is a sectional view of D-D in the middle. Figure 8 It is a schematic diagram of the overall structure of the present application. Figure 9 It is a schematic diagram of the overall structure of the present application. Figure 10 Figure 9 It is an enlarged view of E in the middle. Figure 11 It is a schematic diagram of the overall structure of the present application. Figure 12 It is an enlarged view of F in the middle. Figure 11 It is a schematic diagram of the overall structure of the present application. Figure 13 It is an enlarged view of G in the middle. Figure 14 Figure 13 It is an enlarged view of G in the middle. Figure 15 It is a schematic diagram of the overall structure of the present application. Figure 16 It is a schematic diagram of the overall structure of the present application. Figure 17 It is a schematic diagram of the overall structure of the present application.

[0025] ​​In the figure, 100 - guide rail; 101 - guide groove; 102 - connecting pair one; 103 - connecting pair two; 104 - circular arc; 105 - connecting shaft; 106 - connecting fixed cap; 107 - protruding connecting part; 108 - connecting hole; 200 - connecting beam; 2000 - connecting block; 201 - connecting piece; 2011 - thread one; 202 - connecting port; 2021 - thread two; 203 - protruding connecting part; 2031 - thread three; 300 - sliding piece; 400 - support piece; 500 - double-form fixing assembly; 5000 - fixing block; 5001 - arc-shaped edge; 501 - moving block; 5011 - inner contact surface; 5012 - convex edge; 502 - connecting rod; 503 - limiting piece; 5031 - positioning groove; 5032 - magnet; 504 - movable piece; 505 - side plate one; 506 - side plate two; 507 - connecting rod; 508 - through hole; 509 - back-shaped rod; 510 - space; 600 - crosshatch cutter; 700 - flat workpiece; 800 - curved workpiece; 900 - round pipe workpiece. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0027] Embodiment 1, see Figures 1-17 The present application provides a technical solution: a metal workpiece surface coating detection device, comprising a crosshatch cutter 600, further comprising a guide rail 100, a connecting beam 200, a sliding piece 300, and a support piece 400, the crosshatch cutter 600 is arranged below the connecting beam 200, the connecting beam 200 is arranged on the guide groove 101 of the guide rail 100 through the sliding piece 300, and the support piece 400 is arranged below the guide rail 100. The inner side of the support piece 400 is provided with a double-form fixing assembly 500, the double-form fixing assembly 500 is provided with a fixing block 5000, a moving block 501, a limiting piece 503, and a movable piece 504, the fixing block 5000 is arranged on the inner side of the support piece 400, the moving block 501 is arranged in the fixing block 5000, the limiting piece 503 is arranged in the middle of the inner sides of the two support pieces 400, and the movable piece 504 is arranged above the limiting piece 503. In the fixed metal workpiece state, the fixing block 5000 and the moving block 501 cooperate to fix the metal workpiece, the movable piece 504 is away from the positioning groove 5031 of the limiting piece 503, in the relaxed state, the fixing block 5000 and the moving block 501 do not fix the metal workpiece, and the movable piece 504 falls back to the positioning groove 5031 of the limiting piece 503.

[0028] Specifically, the structural design of the device is based on the principle of mechanical linkage and modular combination. The guide rail 100 provides a basic support platform for the entire system, and the guide groove 101 on the top thereof forms a precise fit with the sliding member 300. This guide structure ensures that the crosshatch cutter 600 always maintains a stable motion trajectory during movement, effectively eliminating the angle deviation problem commonly encountered during manual operation. The connecting beam 200 is designed in a split type, and a plurality of connecting blocks 2000 are adjusted in length by the engagement of thread two 2021 and thread three 2031. This modular structure enables the device to adapt to the detection requirements of workpieces of different sizes, and facilitates disassembly, transportation and storage.

[0029] The crosshatch cutter 600 is detachably connected to the connecting member 201 through thread one 2011, realizing quick replacement of the tool. The sliding member 300 also has a length adjustment function and cooperates with the length change of the connecting beam 200 to ensure stable guiding performance under different spans. The support member 400 serves as a basic bearing structure, and the double-form fixing assembly 500 arranged on the inner side thereof adopts a mechanical self-balancing principle. When the workpiece contacts the inner contact surface 5011 of the moving block 501, an external force pushes the moving block 501 to horizontally displace, and the connecting rod 502 is moved through the back-shaped rod 509. This movement is converted into the vertical lifting movement of the movable member 504 through the hinged mechanism of the connecting rod 507, the side plate one 505 and the side plate two 506.

[0030] The special structure of the double-form fixing assembly 500 enables it to adapt to workpieces of different shapes. The flat plate workpiece 700 is positioned through the gap formed by the inner contact surface 5011 and the convex edge 5012; the curved surface workpiece 800 is curvedly fitted through the inner contact surface 5011; and the circular tube workpiece 900 is fixed by enveloping through the convex edge 5012 and the arc-shaped edge 5001. This multi-form adaptability significantly reduces the operation steps of frequently replacing fixtures in traditional detection.

[0031] The overall structure forms a size adjustment system through the length-adjustable connecting beam 200, the sliding member 300, the connecting rod 502 and the limiting member 503, so that a single device can cover the detection requirements from narrow flat plates to large-diameter pipes. The motion path of the crosshatch cutter 600 guided by the guide rail 100, in cooperation with the self-balancing fixing system, ensures that the workpiece and the cutter always maintain a stable relative position during the marking process. This design ensures the test accuracy while significantly reducing the dependence on the skills of the operator, improving the detection efficiency and the repeatability of the results.

[0032] Embodiment 2, see Figures 1-17The connecting beam 200 is composed of a plurality of detachable connecting blocks 2000. One end of each connecting block 2000 is provided with a connecting port 202, and a threaded hole 2021 is arranged in the connecting port 202. The other end of each connecting block 2000 is provided with a protruding connecting part 203, and a threaded hole 2031 is arranged on the protruding connecting part 203. The threaded hole 2021 and the threaded hole 2031 are matched in size.

[0033] The bottom of the middle connecting block 2000 of the connecting beam 200 is provided with a connecting piece 201, and a threaded hole 2011 is arranged in the connecting piece 201. The connecting piece 201 is detachably connected to the tail of the reticle knife 600 through the threaded hole 2011.

[0034] Specifically, the connecting beam 200 adopts a modular split structure design and is composed of a plurality of detachable connecting blocks 2000. Each connecting block 2000 is provided with a standardized interface at both ends. One end is a connecting port 202 with a threaded hole 2021, and the other end is a protruding connecting part 203 with a threaded hole 2031. This symmetrical threaded interface design allows any two connecting blocks 2000 to be quickly assembled through threaded engagement. The bottom of the middle connecting block 2000 is additionally provided with a connecting piece 201 with a threaded hole 2011, forming a standardized tool interface with the tail of the reticle knife 600.

[0035] This structure realizes three core functions. First, the total length of the connecting beam 200 can be freely adjusted by increasing or decreasing the number of connecting blocks 2000, so that the equipment can adapt to the detection needs of workpieces of different sizes. Second, the detachable connection design of the threaded hole 2011 and the reticle knife 600 facilitates tool replacement and maintenance. When the tool head is worn out, it can be individually disassembled and replaced. Third, the modular design significantly improves the transportation and storage efficiency of the equipment. The disassembled connecting blocks 2000 can be compactly stored.

[0036] The size matching of the threaded hole 2021 and the threaded hole 2031 ensures the complete interchangeability of all connecting blocks 2000. The operator does not need to distinguish between specific blocks. Any two blocks can be reliably connected through threaded engagement. This standardized interface design reduces assembly complexity and avoids the common problem of part mismatch in traditional customized equipment. The threaded hole 2011 of the connecting piece 201 also adopts a standardized specification, ensuring compatibility with the reticle knife 600 of the same specification.

[0037] The overall structure realizes rigid connection through mechanical threads, ensuring structural strength while providing flexible size adjustment capability. Compared with the integral beam structure, this design not only solves the problem of equipment size limitation in large-span detection, but also avoids the high cost of individually customizing equipment for different sizes of workpieces. The reliability of the threaded connection ensures that the connecting beam 200 does not shift or shake during the test process, providing a stable support foundation for the reticle knife 600.

[0038] Embodiment 3, seeFigures 1-17 The guide groove 101 is arranged on the top surface of the guide rail 100, and the two end portions of the connecting beam 200 are provided with sliding members 300, the cross-sectional size of the sliding member 300 matches the guide groove 101, and the sliding member 300 changes its length through the detachable structure as the connecting beam 200.

[0039] Specifically, the guide groove 101 arranged on the top surface of the guide rail 100 precisely matches the sliding member 300, the cross-sectional profile of the sliding member 300 matches the inner cavity size of the guide groove 101, and the geometric constraint ensures that the sliding member 300 can only move horizontally on the path defined by the guide groove 101. The sliding member 300 fixedly installed at both ends of the connecting beam 200 forms a double-point support structure, so that the entire motion system obtains a stable guiding basis.

[0040] The sliding member 300 itself has a length adjustment function, which is consistent with the modular design of the connecting beam 200. When the connecting beam 200 changes the overall length by increasing or decreasing the connecting blocks 2000, the sliding member 300 can be adjusted in length at the same time. This linkage adjustment mechanism ensures that the sliding member 300 at both ends of the connecting beam 200 can always maintain full contact with the guide groove 101 regardless of the length of the connecting beam 200, avoiding the occurrence of partial suspension or poor contact.

[0041] The guide groove 101 precisely controls the movement freedom of the sliding member 300, and only the translational freedom in the length direction of the guide rail 100 is reserved. This constraint effectively eliminates the lateral deviation or angular deflection that may occur during the marking process of the crosshatch cutter 600, ensuring that the cutter tip movement trajectory remains linear. The gap between the sliding member 300 and the guide groove 101 is optimized to ensure smooth sliding and prevent significant shaking.

[0042] The detachable structure design of the sliding member 300 enables adaptive adjustment according to the actual length of the connecting beam 200. When detecting narrow workpieces, short-size sliding members 300 can be used; when facing wide workpieces, long-size sliding members 300 are assembled. This size matching relationship maintains the structural rigidity of the equipment in different working states, preventing the middle part of the connecting beam 200 from being deformed due to excessive support span.

[0043] This guiding system replaces manual control with physical constraints, solving the problem of unstable angle retention of the crosshatch cutter 600 during manual operation. The symmetrical layout of the double sliding members 300 provides balanced load capacity, ensuring that the crosshatch cutter 600 is always perpendicular to the workpiece surface during marking. The straightness accuracy of the guide groove 101 directly determines the quality of the marked grid, and this mechanical guiding method makes the uniformity of the cutter mark spacing no longer dependent on the skill of the operator.

[0044] Embodiment 4, see Figures 1-17The fixed block 5000 is provided with a through hole 508 for accommodating the moving block 501. The fixed block 5000 is provided with an arc-shaped edge 5001. The end face of the moving block 501 is sequentially provided with an inner contact surface 5011 and a convex edge 5012. The convex edge 5012 protrudes from the arc-shaped edge 5001 more than the inner contact surface 5011.

[0045] The support 400 adopts a hollow design and is internally provided with a space 510. The space 510 is internally provided with a U-shaped rod 509. One end of the U-shaped rod 509 is fixedly connected with the moving block 501. The other end of the U-shaped rod 509 is fixedly connected with the connecting rod 502. The U-shaped rod 509 can move horizontally in the space 510.

[0046] The movable part 504 is provided with a side plate one 505 on both sides. The side plate one 505 is hingedly connected with the outer side of the connecting rod 507. The other end of the connecting rod 507 is hingedly connected with a side plate two 506. The side plate two 506 is fixedly arranged on the end side of the connecting rod 502.

[0047] Specifically, the structural design of the double-form fixed assembly 500 is based on the lever transmission and self-balancing principle. The fixed block 5000 serves as a whole base. The through hole 508 of the fixed block 5000 provides a horizontal moving track for the moving block 501. The end part of the moving block 501 is designed to have a stepped structure containing the inner contact surface 5011 and the convex edge 5012. The convex edge 5012 extends outward relative to the arc-shaped edge 5001 to form an overhanging support surface. This geometric feature forms a double-level positioning reference surface.

[0048] The U-shaped rod 509 forms a horizontal force transmission mechanism in the space 510 of the support 400. When the workpiece contacts the inner contact surface 5011 or the convex edge 5012 of the moving block 501, an external force pushes the moving block 501 to move horizontally. This movement is synchronously transmitted to the connecting rod 502 through the U-shaped rod 509. The displacement of the connecting rod 502 is transmitted to the hinged connecting rod 507 through the side plate two 506.

[0049] The connecting rod 507 forms a core conversion mechanism. The two ends of the connecting rod 507 are respectively connected with the side plate one 505 and the side plate two 506 to form a rotary pair connection. When the connecting rod 502 moves horizontally, the side plate two 506 is driven to move synchronously. The connecting rod 507 produces a lever effect under the constraint of the side plate one 505, converting the horizontal movement of the connecting rod 502 into the vertical lifting movement of the movable part 504. The magnet 5032 at the bottom of the movable part 504 is attracted to the limiting part 503 in a non-working state, forming a self-locking state.

[0050] The purpose of such design is that, firstly, the inner contact surface 5011 of the moving block 501 is suitable for positioning the flat workpiece 700 and the curved workpiece 800, and the gap formed by the convex edge 5012 is dedicated to the axial positioning of the round pipe workpiece 900. When different workpieces contact different positions, horizontal displacement transmission can be triggered. Secondly, the vertical lifting of the movable part 504 can adapt to the change of the workpiece height, ensuring that workpieces of different thicknesses can be firmly attached to the support surface. Thirdly, the self-adsorption characteristic of the magnet 5032 keeps the mechanism reset in the non-testing state and automatically releases the lock during testing.

[0051] The dual-mode fixing assembly 500 realizes three-point self-adaptive balance through the above-mentioned mechanical linkage. When the workpiece contacts the moving block 501 to generate an initial displacement, the displacement is transmitted through the transmission path of the meander rod 509-connection rod 502-connecting rod 507, synchronously driving the movable part 504 to adjust the support height. The entire process does not require additional operation steps, and the workpiece is automatically triggered to be fixed and positioned. This self-balancing feature effectively solves the problem of repeated adjustment of traditional manual clamps, especially improving the detection efficiency of irregular workpieces.

[0052] Embodiment 5, refer to Figures 1-17 The bottom of the movable part 504 is provided with a limiting part 503, and the two ends of the limiting part 503 are arranged inside the support part 400 and below the connection rod 502. The connection rod 502, the limiting part 503 and the connecting beam 200 change their lengths through the screw thread detachable structure.

[0053] The limiting part 503 at the bottom of the movable part 504 is provided with a positioning groove 5031 capable of accommodating the cross section of the bottom of the movable part 504, and a magnet 5032 capable of adsorbing the bottom of the movable part 504 is arranged in the positioning groove 5031.

[0054] Specifically, the limiting part 503 in the dual-mode fixing assembly 500 serves as the positioning base mechanism of the movable part 504, and the two ends of the limiting part 503 are fixed to the inner wall surface of the support part 400 and located directly below the connection rod 502, forming a stable horizontal support frame. The positioning groove 5031 arranged on the top surface of the limiting part 503 accurately matches the cross-sectional profile of the bottom of the movable part 504, providing reliable geometric constraints. The magnet 5032 embedded in the positioning groove 5031 provides auxiliary fixing force, keeping the initial position of the movable part 504 in the non-working state.

[0055] The cooperation of the bottom of the movable part 504 and the positioning groove 5031 realizes double positioning function, and the geometric constraints ensure that the movable part 504 can only move in the vertical direction, avoiding deviation or shaking. The adsorption force generated by the magnet 5032 maintains the stability of the movable part 504 in the non-working state, preventing accidental displacement during transportation or idling. When the workpiece contacts the moving block 501 to trigger the mechanical linkage, the driving force required for the lifting of the movable part 504 can easily overcome the magnetic force, realizing smooth vertical movement.

[0056] The connecting rod 502 and the limiting piece 503 are both designed with a screw thread detachable structure consistent with the connecting beam 200. This standardized design enables the entire fixing system to have size adjustment capability. When facing different sizes of workpieces, the length of the connecting rod 502 and the limiting piece 503 can be adjusted synchronously to ensure that the mechanical linkage range of the double-form fixing assembly 500 matches the size of the workpiece. The length change of the connecting rod 502 corresponds to the stroke range of the moving block 501, and the length change of the limiting piece 503 ensures that the positioning groove 5031 is always below the movement track of the movable piece 504.

[0057] The purpose of this design is that the magnet 5032 maintains the mechanism reset in the non-working state, simplifying the operation process. The second, the mechanical driving force generated when the workpiece is placed automatically releases the magnetic attraction locking, without the need for additional unlocking operation. The third, the geometric constraint of the positioning groove 5031 ensures the perpendicularity of the movement track of the movable piece 504, avoiding jamming or deflection. This design significantly improves the positioning accuracy and repeatability of workpiece fixing.

[0058] The length-adjustable mechanism ensures that the equipment adapts to different sizes of workpieces. The short size configuration is suitable for small workpiece detection, and the long size configuration meets the needs of large workpieces. All adjustments are achieved through standardized screw thread connections, avoiding the need for customized tooling. The length change of the limiting piece 503 is adjusted synchronously with the connecting rod 502 to maintain the stability of the entire force transmission mechanism. This size adaptability fundamentally solves the problem of repeated positioning caused by changes in workpiece size in traditional detection.

[0059] Embodiment 6, as shown in Figure 15 The guide rail 100 adopts a foldable connection mode, and an arc portion 104 is arranged at the butt joint position of the two guide rails 100. A connecting pair one 102 and a connecting pair two 103 are arranged on the arc portion 104 respectively. The connecting pair one 102 is located at both ends of the arc portion 104, and the connecting pair two 103 is located in the middle of the arc portion 104. A connecting shaft 105 passes through the connecting pair one 102 and the connecting pair two 103 and is fixed by a connecting fixing cap 106, so that the guide rail 100 can rotate along the connecting shaft 105 and be folded together. The folded guide rail 100 does not occupy space, is light and portable, and can be applied to various scenes.

[0060] Embodiment 7, as shown in Figure 16 The guide rail 100 can also adopt a connection mode of a protruding connection portion 107 and a connecting hole 108. The protruding connection portion 107 and the connecting hole 108 are respectively provided with external and internal threads that mesh with each other. This connection mode is convenient and detachable, and at the same time, the length of the guide rail 100 can be adjusted to adapt to the testing of the adhesion force of the surface coating of metal workpieces of different sizes.

[0061] The following will be described in combination with Figures 1-17The working process of the equipment is introduced: firstly, the connecting beam 200 is assembled, the thread two 2021 of the connecting port 202 is engaged with the thread three 2031 of the convex connecting part 203, the tail of the crosshatch cutter 600 is engaged with the thread one 2011 of the connecting piece 201, and the sliding piece 300 is connected with the connecting beam 200. The length of the connecting beam 200 and the length of the sliding piece 300 can be adjusted according to the size of the workpiece. The assembled connecting beam 200, sliding piece 300 and crosshatch cutter 600 are placed in the guide groove 101 of the guide rail 100, and the length of the limiting piece 503 and the connecting rod 502 can also be adjusted according to the size of the workpiece.

[0062] When the device is not working, the movable piece 504 is located in the positioning groove 5031, and the bottom of the movable piece 504 is attracted by the magnet 5032. When it is necessary to detect a metal workpiece, the flat plate workpiece 700 is moved along the length direction of the guide rail 100 through the gap between the convex edge 5012 and the inner contact surface 5011 of the moving block 501, and the side edge of the flat plate workpiece 700 is clamped into the gap between the inner contact surface 5011 and the convex edge 5012. At this time, the side edge of the flat plate workpiece 700 will extrude the inner contact surface 5011 of the moving block 501 outward, so that the inner contact surface 5011 moves outward, and then the L-shaped rod 509 moves outward in the space 510, so that the connecting rod 502 moves outward together with the L-shaped rod 509, and then the side plate two 506 moves outward together with the connecting rod 502, so that the outer end of the connecting rod 507 moves outward along with the side plate two 506, and the inner side of the connecting rod 507 rotates clockwise along the side plate one 505, so that the movable piece 504 overcomes the attraction between the magnet 5032 and the bottom of the movable piece 504, and rises out of the positioning groove 5031 to be in a balanced state. At this time, the connecting beam 200 is pushed to make the tip of the crosshatch cutter 600 scratch the surface coating of the flat plate workpiece 700. When the detection is finished, the flat plate workpiece 700 is taken out, and the moving block 501 moves inward to the original position due to the attraction of the magnet 5032 to the movable piece 504 and the absence of the side edge of the flat plate workpiece 700 blocking the moving block 501 from falling back into the positioning groove 5031. The specific process is opposite to the above process and will not be described here.

[0063] When the curved surface workpiece 800 is subjected to coating adhesion force detection, the side surface of the curved surface workpiece 800 needs to be pressed against the inner contact surface 5011, and the remaining process is consistent with that of the flat plate workpiece 700, which will not be described here. When the round pipe workpiece 900 needs to be subjected to coating adhesion force detection, the lengths of the connecting beam 200, the sliding piece 300, the connecting rod 502 and the limiting piece 503 need to be adjusted, and the outer side of the round pipe workpiece 900 is pressed against the convex edge 5012 to extrude the moving block 501 outward, and the arc-shaped edge 5001 is fitted with the outer side surface of the round pipe workpiece 900. The subsequent process is consistent with that of the flat plate workpiece 700 and the curved surface workpiece 800, and will not be described here.

[0064] It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting, since the scope of the present application will be limited to the appended claims. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. It will be apparent to one of ordinary skill in the art that many embodiments of the application can be made without departing from the spirit or scope of the application. Numerous specific details are described in order to provide a thorough understanding of the embodiments of the application. However, it will be apparent to one of ordinary skill in the art that embodiments of the present application can be practiced without many of these specific details. In other instances, well-known methods, procedures and components have not been described in detail so as not to unnecessarily obscure aspects of the embodiments of the application. In general, well-known methods, procedures and components have been described in detail so as not to unnecessarily obscure aspects of the embodiments of the present application.

[0065] While the embodiments of the application have been shown and described herein, it will be understood by those skilled in the art that many changes, modifications, substitutions and alterations to these embodiments can be made without departing from the spirit and scope of the present application.

Claims

1. A metal workpiece surface coating inspection device, comprising a cross-cutting tool (600), characterized in that: It also includes a guide rail (100), a connecting beam (200), a sliding member (300), and a support member (400). The cross-cutting tool (600) is disposed below the connecting beam (200). The connecting beam (200) is disposed on the guide groove (101) of the guide rail (100) through the sliding member (300). The support member (400) is disposed below the guide rail (100). The support member (400) is provided with a dual-form fixing component (500) on its inner side. The dual-form fixing component (500) is provided with a fixing block (5000), a moving block (501), a limiting member (503), and a movable member (504). The fixing block (5000) is provided on the inner side of the support member (400), the moving block (501) is provided inside the fixing block (5000), the limiting member (503) is provided in the middle of the inner sides of the two support members (400), and the movable member (504) is provided above the limiting member (503). When the metal workpiece is fixed, the fixing block (5000) and the moving block (501) cooperate to fix the metal workpiece, and the movable part (504) leaves the positioning groove (5031) of the limiting part (503). When the metal workpiece is relaxed, the fixing block (5000) and the moving block (501) do not fix the metal workpiece, and the movable part (504) falls back into the positioning groove (5031) of the limiting part (503).

2. The metal workpiece surface coating inspection device according to claim 1, characterized in that: The connecting beam (200) is composed of several detachable connecting blocks (2000). One end face of the connecting block (2000) is provided with a connecting port (202), and a threaded second (2021) is provided in the connecting port (202). The other end face of the connecting block (2000) is provided with a protruding connecting part (203), and a threaded third (2031) is provided on the protruding connecting part (203). The threaded second (2021) and the threaded third (2031) are sized to match.

3. The metal workpiece surface coating inspection device according to claim 2, characterized in that: A connector (201) is provided at the bottom of the middle connecting block (2000) of the connecting beam (200). The connector (201) has a thread (2011) inside, and is detachably connected to the tail of the cross-cutting tool (600) through the thread (2011).

4. The metal workpiece surface coating inspection device according to claim 3, characterized in that: The guide groove (101) is provided on the top surface of the guide rail (100), and the two ends of the connecting beam (200) are provided with sliding members (300). The cross-sectional dimensions of the sliding member (300) match those of the guide groove (101). The sliding member (300), like the connecting beam (200), changes its length through a detachable structure.

5. The metal workpiece surface coating inspection device according to claim 1, characterized in that: The fixed block (5000) is provided with a through hole (508) for accommodating the movable block (501). The fixed block (5000) is provided with an arc-shaped edge (5001). The end face of the movable block (501) is provided with an inner contact surface (5011) and a protruding edge (5012) in sequence. The protruding edge (5012) protrudes beyond the arc-shaped edge (5001) than the inner contact surface (5011).

6. The metal workpiece surface coating inspection device according to claim 5, characterized in that: The support member (400) has a space (510) inside, and a spiral rod (509) is provided in the space (510). One end of the spiral rod (509) is fixedly connected to the moving block (501), and the other end of the spiral rod (509) is fixedly connected to the connecting rod (502). The spiral rod (509) can move horizontally in the space (510).

7. The metal workpiece surface coating inspection device according to claim 6, characterized in that: The movable part (504) is provided with side plates (505) on both sides, and the side plates (505) are hinged to the outer side of the connecting rod (507).

8. The metal workpiece surface coating inspection device according to claim 7, characterized in that: The other end of the connecting rod (507) is hinged to the side plate (506), and the side plate (506) is fixedly disposed on the end side of the connecting rod (502).

9. A metal workpiece surface coating inspection device according to claim 8, characterized in that: The bottom of the movable part (504) is provided with a limiting part (503). The two ends of the limiting part (503) are located inside the support (400) and below the connecting rod (502). The connecting rod (502), the limiting part (503), and the connecting beam (200) change their length through a threaded detachable structure.

10. A metal workpiece surface coating inspection device according to claim 9, characterized in that: The bottom of the movable part (504) is provided with a positioning groove (5031) that can accommodate the bottom cross section of the movable part (504), and a magnet (5032) that can attract the bottom of the movable part (504) is provided in the positioning groove (5031).

Images