A strength testing device for metal speaker mesh coating and its usage method
By integrating flexible clamping, closed grinding, and automated timing and quantitative detection, the problems of clamping deformation, dust splashing, and inaccurate data in the detection of coated metal speaker mesh are solved, achieving high-precision and pollution-free automated detection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- CHONGQING SURPASS AUTOMBILE PARTS CO LTD
- Filing Date
- 2026-05-06
- Publication Date
- 2026-06-30
AI Technical Summary
Existing methods for detecting the coating on metal speaker grilles cannot achieve quantitative detection. The clamping structure is prone to deformation, dust is easily splashed during the grinding process, the degree of automation is low, and the detection data is inaccurate.
The solution adopts a combination of flexible clamping structure, transparent protective cover for enclosed grinding, constant pressure grinding and automated timing and quantitative detection. It integrates clamping components, grinding components, dust removal components and PLC controller to achieve flexible clamping, enclosed grinding, constant pressure grinding and automated timing and quantitative detection.
It improves detection accuracy and efficiency, avoids dust pollution, ensures the accuracy and repeatability of detection data, adapts to metal speaker meshes of different sizes and thicknesses, and realizes automated operation.
Smart Images
Figure CN122306546A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the technical field of coating testing equipment, and particularly relates to a strength testing device for metal speaker mesh coating and its usage method. Background Technology
[0002] As a crucial component of audio equipment, the bonding strength of the surface coating on metal speaker grilles directly affects the product's durability, corrosion resistance, and appearance. Currently, the industry primarily uses methods such as cross-cut adhesion, tape application, or simple manual polishing to test coating strength. These methods can only roughly assess the adhesion of the coating layer and cannot achieve quantitative testing. Furthermore, given the easily damaged and difficult-to-tear nature of mesh coatings, traditional peeling tests are difficult to implement smoothly, resulting in insufficient objectivity in the test results.
[0003] Existing testing devices generally have functional defects. For example, when testing the strength of a coating by grinding, the clamping structure is too rigid, which can easily cause deformation and indentation when clamping thin metal speaker mesh, affecting the testing accuracy. On the other hand, the grinding process is not enclosed and protected, and waste chips can easily fly and pollute the environment and interfere with observation. It is impossible to determine the strength of the coating through standardized grinding parameters. The degree of automation is low and the repeatability of test data is poor, making it difficult to meet the needs of efficient, stable and accurate testing of metal speaker mesh coating. Summary of the Invention
[0004] To address the problems existing in the prior art, this invention provides a strength testing device for metal speaker mesh coating and its usage method. It has the advantages of clamping and buffering without damaging the mesh, sealing and polishing to prevent splashing, constant and controllable pressure, and automatic timing and quantitative testing. It solves the problems of easy deformation during clamping, lack of protection, low degree of automation, and inaccurate test data in the prior art.
[0005] This invention is implemented as follows: a strength testing device for a metal speaker mesh coating includes a worktable with a support base fixedly connected to it. Clamping components are installed at both ends of the top of the worktable. Each clamping component includes a clamping seat fixed to the worktable, a pressure plate and a buffer plate installed at the upper and lower ends of the clamping seat's inner side. The metal speaker mesh is clamped between the pressure plate and the buffer plate. A dust removal component is installed inside the worktable corresponding to the lower part of the clamping component. A grinding component capable of moving left and right is installed on the support base corresponding to the upper part of the clamping component. A sealing plate is fixed to the worktable corresponding to the left side of the clamping component. The grinding component includes a grinding head, a fixed plate connected to the grinding head via a limiting rod, and a rotating rod fixedly connected to the fixed plate. A transparent protective cover is slidably fitted on the rotating rod. The left end of the transparent protective cover is open and corresponds to the sealing plate. The grinding component can not only drive the transparent protective cover and the sealing plate to open and close, but also perform a moving grinding operation when the transparent protective cover is closed. A PLC controller and a timer are also fixedly installed on the support base.
[0006] The stepper motor, electric actuator, grinding motor, pressure sensor, dust collector, and timer are all electrically connected to the PLC controller.
[0007] In a preferred embodiment of the present invention, the clamping seat is fixed to the top of the workbench by a support block, a screw is threaded through the top of the clamping seat, the end of the screw is connected to the top of the pressure plate by a bearing, a guide block is fixedly connected to one side of the pressure plate, a guide hole is provided on the side wall of the clamping seat, the guide block slides along the guide hole, and a uniformly distributed buffer is fixedly connected to the inner bottom of the clamping seat, the upper end of the buffer is fixed to the bottom of the buffer plate.
[0008] With this setup, rotating the screw drives the pressure plate to move up and down along the guide hole, which can flexibly adjust the clamping height to adapt to metal horn meshes of different thicknesses, preventing workpiece displacement. The buffer plate and buffer components work together to provide elastic support for the bottom of the metal horn mesh, effectively buffering the grinding pressure and preventing the thin metal horn mesh from deforming or being indented due to rigid clamping or excessive force.
[0009] In a preferred embodiment of the present invention, the buffer component includes a support cylinder fixed to the inner bottom of the clamping seat, a buffer rod slidably passing through the top of the support cylinder, and a stop block fixedly connected to the upper end of the buffer rod. The stop block is fixedly connected to the bottom of the buffer plate. The support cylinder and the stop block are fixedly connected by a second buffer spring. A sliding plate is fixed to the lower end of the buffer rod. The sliding plate slides along the inside of the support cylinder. The sliding plate and the inner bottom of the support cylinder are fixedly connected by a first buffer spring.
[0010] With this setup, the support cylinder, buffer rod, first buffer spring, and second buffer spring form a double-layer elastic buffer structure. When grinding pressure is applied to the metal horn mesh, the buffer rod drives the slide plate to compress the first buffer spring, while the stop block compresses the second buffer spring. The buffering force of the two springs is used to achieve constant pressure grinding and deformation buffering, ensuring that the metal horn mesh remains flat during the inspection process and will not be rigidly damaged, thus improving the inspection accuracy.
[0011] In a preferred embodiment of the present invention, the dust removal component includes a dust collection box with an open top and fixed to the top of the workbench. A waste channel is provided through the top of the workbench. The bottom of the dust collection box is fixedly connected to one end of a vacuum cleaner fan. A door panel is hinged to the front of the workbench. A ventilation hole is provided on the door panel. The other end of the vacuum cleaner fan communicates with the ventilation hole. A filter screen is slidably inserted into the inside of the dust collection box.
[0012] With this setup, the dust collection box corresponds to the grinding area via the waste channel. After the dust collector is started, the coating debris and dust generated during grinding are sucked into the dust collection box through the waste channel. The filter effectively intercepts the debris, and the ventilation holes ensure heat dissipation of the dust collector and airflow. Opening the door panel allows for easy removal of the filter to clean the accumulated debris, achieving effective collection of grinding dust and avoiding environmental pollution and debris interference with observation.
[0013] In a preferred embodiment of the present invention, support plates are fixedly connected to both sides of the support base, a guide rod is fixedly connected between the support plates, and a lead screw is connected via bearings. A stepper motor is fixedly installed on the outer wall of the support plate, and the output end of the stepper motor is fixedly connected to one end of the lead screw. A transverse sliding seat is sleeved between the lead screw and the guide rod. The transverse sliding seat is threadedly connected to the lead screw and slidably connected to the guide rod. An electric push rod is fixedly installed at the bottom of the transverse sliding seat, and a fixed box is fixedly installed at the end of the electric push rod. A grinding motor is fixedly installed inside the fixed box, and a rotating rod is connected to the bottom of the fixed box via bearings. The output end of the grinding motor is fixedly connected to the upper end of the rotating rod, and the lower end of the rotating rod is fixedly connected to the fixed plate.
[0014] With this setup, the stepper motor drives the lead screw to rotate, which, in conjunction with the guide rod's guide limit, causes the transverse slide to move smoothly left and right along the support base, thus achieving lateral position adjustment of the grinding head. The electric push rod drives the fixed box and grinding components to move up and down, achieving contact and pressure adjustment between the grinding head and the workpiece. The grinding motor drives the rotating rod to rotate the grinding head, achieving uniform grinding action. The overall structure achieves automated and precise control.
[0015] In a preferred embodiment of the present invention, the middle part of the rotating rod is fitted with an upper limit ring and a lower limit ring via a bearing sleeve. A guide slide is provided at the top of the transparent protective cover, and the rotating rod passes through the guide slide. The upper limit ring and the lower limit ring slide along the inner and outer walls of the transparent protective cover. A vertical plate is fixed on the transparent protective cover corresponding to the left end of the guide slide. The left side of the upper limit ring and the vertical plate are fixedly connected by a telescopic spring. Soft brush strips that are evenly distributed are fixedly connected to the groove wall of the guide slide, which facilitates the lateral sliding of the rotating rod and also helps to block the splashing of waste chips. The bottom of the transparent protective cover is slidably connected to the top of the workbench.
[0016] During inspection, the rotating rod drives the transparent protective cover to move to the left through the telescopic spring until it fits against the sealing plate. The transparent protective cover is then restricted, achieving stable coverage of the workpiece. When grinding the workpiece, the rotating rod and the grinding part can move back and forth along the guide slide for uniform grinding. That is, moving to the left compresses the telescopic spring, and moving to the right resets the telescopic spring. Moving within the range of the guide slide ensures stable contact and closure between the protective cover and the sealing plate during grinding, preventing waste chips from flying.
[0017] With this setup, the transparent protective cover, together with the sealing plate, forms a closed grinding space to prevent debris from flying. The rotating rod slides left and right in the guide rail, and with the elastic reset of the telescopic spring, it can easily move the grinding parts on the transparent protective cover back and forth. The upper limit ring and lower limit ring limit the stability of the connection between the transparent protective cover and the rotating rod. The soft brush strip fills the gap between the rotating rod and the rail, which not only ensures the smooth sliding of the rotating rod, but also effectively prevents dust from escaping, improving the detection environment and the clarity of observation.
[0018] In a preferred embodiment of the present invention, both ends of the fixing plate have slidably passing through limit rods. The lower end of the limit rod is fixedly connected to the top of the grinding head, and the upper end of the limit rod is fixedly fixed to a limit block. A rubber sleeve is fixedly connected between the top of the grinding head and the fixing plate, and the rubber sleeve is fitted onto the limit rod. A pressure sensor is fixedly installed between the middle of the fixing plate and the grinding head. A flexible grinding sleeve is fitted and fixedly attached to the bottom of the grinding head, and the flexible grinding sleeve is made of polyurethane foam.
[0019] This design allows the limiting rod and rubber sleeve to achieve an elastic connection between the grinding head and the grinding head, ensuring flexible contact during grinding and preventing damage to the metal horn mesh substrate. The pressure sensor detects the pressure value between the grinding head and the coating in real time and transmits it to the PLC controller. The PLC controller can finely adjust the height via an electric push rod to maintain a constant grinding pressure. The flexible grinding sleeve is made of polyurethane foam, which is soft, wear-resistant, and has good fit, ensuring uniform grinding of the mesh coating. At the same time, the pressure data provides an objective basis for the quantitative determination of the coating strength.
[0020] A method for using a strength testing device for a metal horn mesh coating, applicable to the aforementioned strength testing device for a metal horn mesh coating, includes the following steps: S1. Place the metal speaker mesh on the buffer plate of the clamping part, adjust the pressure plate to press and fix the edge of the mesh body to achieve flexible support and avoid workpiece deformation. Check the status of the dust removal part, grinding part, PLC controller and timer, and set the grinding pressure, moving speed and other detection parameters. S2. The grinding component moves the transparent protective cover to the left until the transparent protective cover and the sealing plate close to form a closed grinding space. Then the grinding head starts to rotate and moves back and forth inside the transparent protective cover to perform constant pressure grinding on the metal speaker mesh surface coating. The dust removal component simultaneously removes the waste generated by grinding, and the timer records the grinding time in real time. S3. When the coating is polished to the point where the metal substrate is exposed, record the polishing time displayed by the timer. The PLC controller determines the coating strength level based on the polishing time and polishing pressure. After polishing is completed, the polished part is reset, the transparent protective cover is separated from the sealing plate, the pressure plate is released, and the metal speaker mesh that has been tested can be taken out.
[0021] Compared with the prior art, the beneficial effects of the present invention are as follows: The flexible clamping structure and double-layer buffer components achieve non-destructive clamping of the metal speaker mesh, avoiding deformation and indentation of the mesh, thus improving detection accuracy. The transparent protective cover and sealing plate form a closed space, which, combined with a dust removal component, enables dust-free grinding, avoiding contamination and improving observation and detection accuracy. Constant pressure grinding is achieved through a pressure sensor and PLC controller, and a timer is used to quantitatively determine the coating strength, enabling a comprehensive determination of coating strength based on grinding time and pressure parameters. The clamping components can adapt to metal speaker meshes of different sizes and thicknesses, enabling automatic left and right movement. Furthermore, the transparent protective cover and sealing plate adopt an automatic opening and closing design, facilitating loading and unloading. The entire detection process is automated, improving detection efficiency. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the transparent protective cover in the open state provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the transparent protective cover in its closed state according to an embodiment of the present invention; Figure 3 This is provided by the embodiments of the present invention. Figure 2 Cross-sectional structural diagram; Figure 4 This is provided by the embodiments of the present invention. Figure 2 Partial enlarged structural diagram; Figure 5 This is a schematic diagram of the cross-sectional structure of the clamping member provided in an embodiment of the present invention; Figure 6 This is a schematic diagram of the cross-sectional structure of the grinding part provided in an embodiment of the present invention; Figure 7 This is a schematic diagram of the cross-sectional structure of the support cylinder provided in an embodiment of the present invention.
[0023] In the diagram: 1. Workbench; 101. Support base; 102. Waste channel; 103. Door panel; 104. Ventilation hole; 105. Sealing plate; 106. Support block; 2. Lead screw; 201. Support plate; 202. Guide rod; 203. Stepper motor; 3. Horizontal sliding seat; 301. Electric push rod; 302. Fixing box; 303. Grinding motor; 4. Rotating rod; 401. Upper limit ring; 402. Lower limit ring; 403. Fixing plate; 404. Telescopic spring; 405. Vertical plate; 5. Transparent protective cover; 501. Guide slide; 502. Soft 6. Brush strip; 7. Grinding head; 8. Flexible grinding sleeve; 9. Limiting rod; 10. Rubber sleeve; 11. Limiting block; 2. Pressure sensor; 3. Clamping seat; 4. Guide hole; 5. Pressure plate; 6. Screw; 704. Guide block; 8. Buffer plate; 9. Support cylinder; 10. Slide plate; 11. First buffer spring; 22. Buffer rod; 33. Stop block; 44. Second buffer spring; 5. Dust collection box; 65. Filter screen; 76. Dust collection fan; 77. PLC controller; 88. Timer. Detailed Implementation
[0024] To further understand the invention's content, features, and effects, the following embodiments are provided, and detailed descriptions are given in conjunction with the accompanying drawings.
[0025] The structure of the present invention will now be described in detail with reference to the accompanying drawings.
[0026] refer to Figures 1 to 7 As shown in the figure, an embodiment of the present invention provides a strength testing device for a metal speaker mesh coating, including a workbench 1, on which a support base 101 is fixedly connected. Clamping components are installed at both ends of the top of the workbench 1. Each clamping component includes a clamping seat 7 fixed to the workbench 1, a pressure plate 702 and a buffer plate 705 installed on the upper and lower ends of the inner side of the clamping seat 7. The metal speaker mesh is clamped between the pressure plate 702 and the buffer plate 705. A dust removal component is installed inside the workbench 1 corresponding to the lower part of the clamping component. A grinding component that can move left and right is installed on the support base 101 corresponding to the upper part of the clamping component. A sealing plate 105 is fixed on the workbench 1 on the left side of the clamping component. The grinding component includes a grinding head 6, a fixing plate 403 connected to the grinding head 6 via a limiting rod 602, and a rotating rod 4 fixedly connected to the fixing plate 403. A transparent protective cover 5 is slidably sleeved on the rotating rod 4. The left end of the transparent protective cover 5 is open and corresponds to the sealing plate 105. The grinding component can not only drive the transparent protective cover 5 and the sealing plate 105 to open and close, but also perform a moving grinding operation when the transparent protective cover 5 is closed. A PLC controller 9 and a timer 10 are also fixedly installed on the support base 101.
[0027] Stepper motor 203, electric push rod 301, grinding motor 303, pressure sensor 605, vacuum fan 802 and timer 10 are all electrically connected to PLC controller 9.
[0028] Specifically, the clamping seat 7 is fixed to the top of the workbench 1 by the support block 106. A screw 703 is threaded through the top of the clamping seat 7. The end of the screw 703 is connected to the top of the pressure plate 702 by a bearing. A guide block 704 is fixedly connected to one side of the pressure plate 702. A guide hole 701 is provided on the side wall of the clamping seat 7. The guide block 704 slides along the guide hole 701. A uniformly distributed buffer is fixedly connected to the inner bottom of the clamping seat 7. The upper end of the buffer is fixed to the bottom of the buffer plate 705.
[0029] Using the above scheme, rotating the screw 703 drives the pressure plate 702 to move up and down along the guide hole 701, which can flexibly adjust the clamping height to adapt to metal horn meshes of different thicknesses and prevent workpiece displacement. The buffer plate 705 cooperates with the buffer component to achieve elastic support for the bottom of the metal horn mesh, effectively buffering the grinding pressure and preventing the thin metal horn mesh from deforming or being indented due to rigid clamping or excessive force.
[0030] Specifically, the buffer component includes a support cylinder 706 fixed to the inner bottom of the clamping seat 7, a buffer rod 709 slidably passing through the top of the support cylinder 706, and a stop block 710 fixedly connected to the upper end of the buffer rod 709. The stop block 710 is fixedly connected to the bottom of the buffer plate 705. The support cylinder 706 and the stop block 710 are fixedly connected by a second buffer spring 711. A sliding plate 707 is fixed to the lower end of the buffer rod 709. The sliding plate 707 slides along the inside of the support cylinder 706. The sliding plate 707 and the inner bottom of the support cylinder 706 are fixedly connected by a first buffer spring 708.
[0031] Using the above scheme, the support cylinder 706, buffer rod 709, first buffer spring 708 and second buffer spring 711 constitute a double-layer elastic buffer structure. When the grinding pressure is applied to the metal horn mesh, the buffer rod 709 drives the slide plate 707 to compress the first buffer spring 708, while the stop block 710 compresses the second buffer spring 711. The buffering force of the two springs is used to achieve constant pressure grinding and deformation buffering, ensuring that the metal horn mesh remains flat during the inspection process and will not be rigidly damaged, thus improving the inspection accuracy.
[0032] Specifically, the dust removal component includes a dust collection box 8 with an open top and fixed to the top of the workbench 1. A waste channel 102 is provided through the top of the workbench 1. The bottom of the dust collection box 8 is fixedly connected to one end of a vacuum cleaner fan 802. A door panel 103 is hinged to the front of the workbench 1. A ventilation hole 104 is provided on the door panel 103. The other end of the vacuum cleaner fan 802 communicates with the ventilation hole 104. A filter screen 801 is slidably inserted into the inside of the dust collection box 8.
[0033] Using the above solution, the dust collection box 8 corresponds to the grinding area through the waste channel 102. After the dust collection fan 802 is started, the coating debris and dust generated during grinding are sucked into the dust collection box 8 through the waste channel 102. The filter screen 801 effectively intercepts the debris, and the ventilation hole 104 ensures heat dissipation and airflow of the dust collection fan 802. Opening the door panel 103 allows for easy removal of the filter screen 801 to clean the accumulated debris, achieving effective collection of grinding dust and avoiding environmental pollution and debris interference with observation.
[0034] Specifically, support plates 201 are fixedly connected to both sides of the support base 101. A guide rod 202 is fixedly connected between the support plates 201, and a lead screw 2 is connected through a bearing. A stepper motor 203 is fixedly installed on the outer wall of the support plate 201. The output end of the stepper motor 203 is fixedly connected to one end of the lead screw 2. A transverse sliding seat 3 is sleeved between the lead screw 2 and the guide rod 202. The transverse sliding seat 3 is threadedly connected to the lead screw 2 and slidably connected to the guide rod 202. An electric push rod 301 is fixedly installed at the bottom of the transverse sliding seat 3. A fixed box 302 is fixedly installed at the end of the electric push rod 301. A grinding motor 303 is fixedly installed inside the fixed box 302. A rotating rod 4 is connected to the bottom of the fixed box 302 through a bearing. The output end of the grinding motor 303 is fixedly connected to the upper end of the rotating rod 4, and the lower end of the rotating rod 4 is fixedly connected to the fixed plate 403.
[0035] Using the above scheme, the stepper motor 203 drives the lead screw 2 to rotate, and with the guide rod 202 for guiding and limiting, it drives the transverse seat 3 to move smoothly left and right along the support seat 101, thereby realizing the lateral position adjustment of the grinding head 6. The electric push rod 301 drives the fixed box 302 and the grinding assembly to move up and down, thereby realizing the contact between the grinding head 6 and the workpiece and the pressure adjustment. The grinding motor 303 drives the rotating rod 4 to rotate the grinding head 6, thereby realizing the uniform grinding action. The overall structure realizes automated and precise control.
[0036] Specifically, the middle part of the rotating rod 4 is fitted with an upper limit ring 401 and a lower limit ring 402 via bearings. The top of the transparent protective cover 5 is provided with a guide slide 501. The rotating rod 4 passes through the guide slide 501. The upper limit ring 401 and the lower limit ring 402 slide along the inner and outer walls of the transparent protective cover 5. A vertical plate 405 is fixed on the transparent protective cover 5 corresponding to the left end of the guide slide 501. The left side of the upper limit ring 401 and the vertical plate 405 are fixedly connected by a telescopic spring 404. Soft brush strips 502 are evenly distributed and fixedly connected to the groove wall of the guide slide 501, which facilitates the lateral sliding of the rotating rod 4 and also helps to block the splashing of waste. The bottom of the transparent protective cover 5 is slidably connected to the top of the workbench 1.
[0037] During testing, the rotating rod 4 drives the transparent protective cover 5 to move to the left through the telescopic spring 404 until it is in contact with the sealing plate 105. The transparent protective cover 5 is restricted, thus achieving stable coverage of the workpiece. When grinding the workpiece, the rotating rod 4 and the workpiece can move back and forth along the guide slide 501 for uniform grinding. That is, moving to the left compresses the telescopic spring 404, and moving to the right resets the telescopic spring 404. It moves within the range of the guide slide, which ensures that the protective cover and the sealing plate 105 are stably in contact and closed during grinding, avoiding the splashing of waste chips.
[0038] Using the above scheme, the transparent protective cover 5, together with the sealing plate 105, forms a closed grinding space to prevent debris from flying. The rotating rod 4 slides left and right in the guide slide 501. With the elastic reset of the telescopic spring 404, the grinding parts on the transparent protective cover 5 can move back and forth easily. The upper limit ring 401 and the lower limit ring 402 limit the stability of the connection between the transparent protective cover 5 and the rotating rod 4. The soft brush strip 502 fills the gap between the rotating rod 4 and the slide, which not only ensures the smooth sliding of the rotating rod 4, but also effectively prevents dust from escaping, thus improving the detection environment and the clarity of observation.
[0039] Specifically, both ends of the fixing plate 403 slide through the limiting rod 602. The lower end of the limiting rod 602 is fixedly connected to the top of the grinding head 6, and the upper end of the limiting rod 602 is fixedly fixed with a limiting block 604. A rubber sleeve 603 is fixedly connected between the top of the grinding head 6 and the fixing plate 403. The rubber sleeve 603 is sleeved on the limiting rod 602. A pressure sensor 605 is fixedly installed between the middle of the fixing plate 403 and the grinding head 6. A flexible grinding sleeve 601 is sleeved and fixedly attached to the bottom of the grinding head 6. The flexible grinding sleeve 601 is made of polyurethane foam.
[0040] Using the above scheme, the limiting rod 602 and the rubber sleeve 603 achieve an elastic connection between the grinding head 6 and the grinding head 6, ensuring flexible contact during grinding and avoiding damage to the metal speaker mesh substrate. The pressure sensor 605 detects the pressure value between the grinding head 6 and the coating in real time and transmits it to the PLC controller 9. The PLC controller 9 can finely adjust the height through the electric push rod 301 to maintain a constant grinding pressure. The flexible grinding sleeve 601 is made of polyurethane foam material, which is soft, wear-resistant and has good fit, ensuring uniform grinding of the mesh coating. At the same time, the pressure data provides an objective basis for the quantitative determination of the coating strength.
[0041] A method for using a strength testing device for a metal horn mesh coating, applicable to the aforementioned strength testing device for a metal horn mesh coating, includes the following steps: S1. Place the metal speaker mesh on the buffer plate 705 of the clamping part, adjust the pressure plate 702 to press and fix the edge of the mesh body to achieve flexible support and avoid workpiece deformation. Check the status of the dust removal part, the grinding part, the PLC controller 9 and the timer 10, and set the grinding pressure, the moving speed and other detection parameters. S2. The grinding component moves the transparent protective cover 5 to the left until the transparent protective cover 5 and the sealing plate 105 close to form a closed grinding space. Then the grinding head 6 starts to rotate and moves back and forth inside the transparent protective cover 5 to perform constant pressure grinding on the metal speaker mesh surface coating. The dust removal component simultaneously removes the waste generated by grinding, and the timer 10 records the grinding time in real time. S3. When the coating is polished to the point where the metal substrate is exposed, record the polishing time displayed by the timer 10. The PLC controller 9 determines the coating strength level based on the polishing time and polishing pressure. After polishing is completed, the polished part is reset, the transparent protective cover 5 is separated from the sealing plate 105, the pressure plate 702 is released, and the metal speaker mesh that has been tested can be taken out.
[0042] Working principle of the invention: In use, the metal horn mesh is placed on the buffer plate 705 of the clamping component. The pressure plate 702 is adjusted by the screw 703 to press the workpiece. The double-layer buffer spring provides flexible support to prevent the mesh from deforming. During testing, the stepper motor 203 drives the lead screw 2 to move the transverse seat 3 to the left. Under the action of the telescopic spring 404, the rotating rod 4 pushes the transparent protective cover 5 and the sealing plate 105 to close and form a closed space. The electric push rod 301 adjusts the height of the grinding head 6. The pressure sensor 605 monitors the grinding pressure in real time and feeds it back to the PLC controller 9 to maintain constant pressure. Then, the grinding motor 303 drives the grinding head 6 to rotate. The transverse seat 3 drives the grinding head 6 to grind back and forth in the protective cover. The dust collector 802 simultaneously sucks away dust through the waste channel 102. The timer 10 records the time from grinding to the point where the coating is damaged and the substrate is exposed. The PLC controller 9 determines the coating strength based on the grinding time and pressure parameters. After the test is completed, all components are reset, and the workpiece can be removed by releasing the pressure plate 702.
[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.
[0044] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A strength testing device for a metal speaker mesh coating, comprising a workbench (1), characterized in that: A support base (101) is fixedly connected to the workbench (1). Clamping components are installed at both ends of the top of the workbench (1). The clamping components include a clamping seat (7) fixed to the workbench (1), a pressure plate (702) and a buffer plate (705) installed on the upper and lower ends of the inner side of the clamping seat (7). A metal horn mesh is clamped between the pressure plate (702) and the buffer plate (705). A dust removal component is installed inside the workbench (1) below the clamping component. A grinding component that can move left and right is installed on the support base (101) above the clamping component. A sealing plate (10) is fixed on the workbench (1) to the left of the clamping component. 5) The grinding component includes a grinding head (6), a fixed plate (403) connected to the grinding head (6) via a limiting rod (602), and a rotating rod (4) fixedly connected to the fixed plate (403). A transparent protective cover (5) is slidably sleeved on the rotating rod (4). The left end of the transparent protective cover (5) is open and corresponds to the sealing plate (105). The grinding component can not only drive the transparent protective cover (5) and the sealing plate (105) to open and close, but also perform mobile grinding operations when the transparent protective cover (5) is closed. A PLC controller (9) and a timer (10) are also fixedly installed on the support base (101).
2. The strength testing device for a metal speaker mesh coating as described in claim 1, characterized in that: The clamping seat (7) is fixed to the top of the workbench (1) by a support block (106). A screw (703) is threaded through the top of the clamping seat (7). The end of the screw (703) is connected to the top of the pressure plate (702) by a bearing. A guide block (704) is fixedly connected to one side of the pressure plate (702). A guide hole (701) is provided on the side wall of the clamping seat (7). The guide block (704) slides along the guide hole (701). A uniformly distributed buffer is fixedly connected to the inner bottom of the clamping seat (7). The upper end of the buffer is fixed to the bottom of the buffer plate (705).
3. The strength testing device for a metal speaker mesh coating as described in claim 2, characterized in that: The buffer component includes a support cylinder (706) fixed to the inner bottom of the clamping seat (7), a buffer rod (709) sliding through the top of the support cylinder (706), and a stop block (710) fixedly connected to the upper end of the buffer rod (709). The stop block (710) is fixedly connected to the bottom of the buffer plate (705). The support cylinder (706) and the stop block (710) are fixedly connected by a second buffer spring (711). A sliding plate (707) is fixed to the lower end of the buffer rod (709). The sliding plate (707) slides along the inside of the support cylinder (706). The sliding plate (707) and the inner bottom of the support cylinder (706) are fixedly connected by a first buffer spring (708).
4. The strength testing device for a metal speaker mesh coating as described in claim 1, characterized in that: The dust removal component includes a dust collection box (8) with an open top and fixed to the top of the workbench (1). A waste channel (102) is provided through the top of the workbench (1). The bottom of the dust collection box (8) is fixedly connected to one end of a dust collection fan (802). A door panel (103) is hinged to the front of the workbench (1). A ventilation hole (104) is provided on the door panel (103). The other end of the dust collection fan (802) is connected to the ventilation hole (104). A filter screen (801) is slidably inserted into the inside of the dust collection box (8).
5. The strength testing device for a metal speaker mesh coating as described in claim 1, characterized in that: Support plates (201) are fixedly connected to both sides of the support base (101). A guide rod (202) is fixedly connected between the support plates (201), and a lead screw (2) is connected through a bearing. A stepper motor (203) is fixedly installed on the outer wall of the support plate (201). The output end of the stepper motor (203) is fixedly connected to one end of the lead screw (2). A transverse sliding seat (3) is sleeved between the lead screw (2) and the guide rod (202). The transverse sliding seat (3) is threadedly connected to the lead screw (2) and to... The guide rod (202) is slidably connected, and an electric push rod (301) is fixedly installed at the bottom of the transverse seat (3). A fixed box (302) is fixed at the end of the electric push rod (301). A grinding motor (303) is fixedly installed inside the fixed box (302). The rotating rod (4) is connected to the bottom of the fixed box (302) through a bearing. The output end of the grinding motor (303) is fixedly connected to the upper end of the rotating rod (4). The lower end of the rotating rod (4) is fixedly connected to the fixed plate (403).
6. The strength testing device for a metal speaker mesh coating as described in claim 1, characterized in that: The middle part of the rotating rod (4) is fitted with an upper limit ring (401) and a lower limit ring (402) through a bearing. The top of the transparent protective cover (5) is provided with a guide slide (501). The rotating rod (4) passes through the guide slide (501). The upper limit ring (401) and the lower limit ring (402) slide along the inner and outer walls of the transparent protective cover (5). A vertical plate (405) is fixed on the transparent protective cover (5) corresponding to the left end of the guide slide (501). The left side of the upper limit ring (401) and the vertical plate (405) are fixedly connected by a telescopic spring (404). Soft brush strips (502) are evenly distributed on the groove wall of the guide slide (501), which facilitates the lateral sliding of the rotating rod (4) and also helps to block the splashing of waste. The bottom of the transparent protective cover (5) is slidably connected to the top of the workbench (1).
7. The strength testing device for a metal speaker mesh coating as described in claim 1, characterized in that: Both ends of the fixed plate (403) slide through the limiting rod (602). The lower end of the limiting rod (602) is fixedly connected to the top of the grinding head (6). The upper end of the limiting rod (602) is fixedly fixed with a limiting block (604). A rubber sleeve (603) is fixedly connected between the top of the grinding head (6) and the fixed plate (403). The rubber sleeve (603) is sleeved on the limiting rod (602). A pressure sensor (605) is fixedly installed between the middle of the fixed plate (403) and the grinding head (6). A flexible grinding sleeve (601) is sleeved and fixed at the bottom of the grinding head (6). The flexible grinding sleeve (601) is made of polyurethane foam.
8. A method for using a strength testing device for a metal speaker mesh coating, characterized in that, The strength testing device for the metal speaker mesh coating according to any one of claims 1-7 includes the following steps: S1. Place the metal horn mesh on the buffer plate (705) of the clamping part, adjust the pressure plate (702) to press and fix the edge of the mesh body, realize flexible support to avoid workpiece deformation, check the status of dust removal parts, grinding parts and PLC controller (9) and timer (10), and set grinding pressure, moving speed and other detection parameters. S2. The grinding component moves the transparent protective cover (5) to the left until the transparent protective cover (5) and the sealing plate (105) close to form a closed grinding space. Then the grinding head (6) starts to rotate and moves back and forth in the transparent protective cover (5) to perform constant pressure grinding on the metal speaker mesh surface coating. The dust removal component simultaneously removes the waste generated by the grinding. The timer (10) records the grinding time in real time. S3. When the coating is polished to expose the metal substrate, record the polishing time displayed by the timer (10). The PLC controller (9) comprehensively judges the coating strength level based on the polishing time and polishing pressure. After polishing is completed, the polished part is reset, the transparent protective cover (5) is separated from the sealing plate (105), the pressure plate (702) is released, and the metal speaker mesh that has been tested is taken out.