A calender secondary roller surface coating thickness detection device

Abstract

The utility model relates to calendering machine vice roll coating layer detection technical field, and disclose a kind of calendering machine vice roll surface coating thickness detection device, including bottom plate, the bottom plate upper surface is equipped with the bearing assembly for the bearing of calendering machine vice roll, the upper surface of the bottom plate is fixedly connected with fixed frame, multiple square mouths are set on the top wall of the fixed frame, multiple the square mouth is slidably connected with slide, the top inner wall of the slide is fixedly connected with electric push rod between the top outer wall of fixed frame, the slide bottom is slidably connected with slide table two. The utility model is provided with fixed block with cleaning cotton on the both sides of the measuring head of coating thickness gauge, integrates cleaning and detection function, significantly improves measurement accuracy, when measuring, the surface of the measured point is automatically wiped by cleaning cotton, remove dust, dirt and other impurities, effectively avoid the interference of surface pollutant to nondestructive testing accuracy, ensure the authenticity and accuracy of thickness data.

Description

Technical Field

[0001] This utility model relates to the field of coating detection technology for auxiliary rolls of calenders, and more specifically to a device for detecting the coating thickness on the surface of auxiliary rolls of calenders. Background Technology

[0002] Calenders are key equipment in industries such as polymer materials, rubber, and metal foil. They continuously calender materials through a series of high-temperature and high-pressure rollers. The auxiliary rollers usually serve functions such as guiding, cooling, or surface treatment of materials. In order to enhance the wear resistance, corrosion resistance, and non-stick properties of the auxiliary rollers and extend their service life, their surfaces often need to be sprayed or plated with a special coating.

[0003] The thickness of the coating is one of the core parameters for ensuring the performance and quality of the roller. If the coating is too thin, the substrate will wear out prematurely, affecting product quality and even causing downtime. If the coating is too thick, it will result in cost waste, affect heat conduction efficiency, and may cause the coating to peel off due to excessive internal stress.

[0004] Due to long-term use, the surface of the auxiliary roller will accumulate a large amount of dust, oil, and other impurities. If these are not treated, they will affect the accuracy of non-destructive testing and make it impossible to ensure the authenticity and accuracy of the thickness data. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a device for detecting the coating thickness on the surface of a calender auxiliary roll, so as to solve the problems existing in the background art.

[0006] This utility model provides the following technical solution: a coating thickness detection device for a calender auxiliary roll surface, comprising a base plate, a bearing assembly for supporting the calender auxiliary roll on the upper surface of the base plate, a fixed frame fixedly connected to the upper surface of the base plate, multiple square openings on the top wall of the fixed frame, a slide frame slidably connected within the multiple square openings, an electric push rod fixedly connected between the top inner wall of the slide frame and the top outer wall of the fixed frame, a slide table two slidably connected to the bottom of the slide frame, a screw rotatably connected between the inner walls on both sides of the slide frame located below the fixed frame via bearing seats, and the screw passes through a threaded cylinder on the slide table two and is threadedly connected to the threaded cylinder, a drive motor two fixedly connected to one outer wall of the slide frame to rotate the screw axially, two fixing blocks fixedly connected to the lower surface of the slide table two, cleaning cotton is adhered to the bottom end of each of the two fixing blocks, and a coating thickness gauge is fixedly connected between the two fixing blocks.

[0007] As a further embodiment of this utility model, the bearing assembly includes two support seats fixedly connected to the upper surface of the base plate. Each of the two support seats has multiple through holes, and support rollers are fixedly connected to the multiple through holes at symmetrical positions. A clamping assembly for clamping the two ends of the calender auxiliary roller is provided on the upper surface of the base plate and below the bearing assembly.

[0008] As a further embodiment of this utility model, the clamping assembly includes two fixed seats fixedly connected to the upper surface of the base plate, two slide rods fixedly connected between the two fixed seats, two slide tables slidably connected to the two slide rods, a bidirectional lead screw rotatably connected between the two fixed seats through a bearing seat, and the bidirectional lead screw passes through a threaded cylinder on the two slide tables and is threadedly connected to the threaded cylinder, a drive motor for rotating the bidirectional lead screw axially is fixedly connected to one side of one of the fixed seats, a clamp is fixedly connected to the upper surface of each of the two slide tables, and a conical top block is rotatably connected to the opposite side of each of the two clamps through a bearing seat.

[0009] As a further embodiment of this utility model, two symmetrical base frames are fixedly connected to the lower surface of the carriage, and a drive roller frame is fixedly connected to the lower surface of the base frame. A drive motor for rotating the rotating roller is fixedly connected to one side of the drive roller frame.

[0010] As a further improvement of this invention, the cleaning cotton has a certain degree of toughness.

[0011] As a further embodiment of this invention, the centerlines of the plurality of support rollers are all parallel to each other and located on the same horizontal plane.

[0012] As a further embodiment of this utility model, the slide is engraved with a scale for indicating the horizontal movement distance of the slide table.

[0013] As a further embodiment of this utility model, the bearing seat in which the conical top block is rotatably connected to the clamp is a waterproof bearing.

[0014] The technical effects and advantages of this utility model are as follows:

[0015] 1. This utility model has fixed blocks with cleaning cotton on both sides of the measuring head of the coating thickness gauge, which integrates cleaning and detection functions, significantly improving the measurement accuracy. During measurement, the cleaning cotton automatically wipes the surface of the point to be measured to remove dust, oil and other impurities, effectively avoiding the interference of surface contaminants on the accuracy of non-destructive testing, and ensuring the authenticity and accuracy of the thickness data.

[0016] 2. This utility model adopts a bidirectional lead screw structure driven by a drive motor to clamp the axis of the auxiliary roller. The tapered surface design enables it to have a self-centering function, which can automatically center auxiliary rollers of different lengths, ensuring that their axis line is stable and consistent with the detection plane. The clamping is fast and stable, and it is suitable for auxiliary rollers of various specifications of calenders, with strong versatility.

[0017] 3. This utility model precisely controls the movement of the detection head along the roller axis through a drive motor and a screw mechanism, which can quickly and accurately move the measuring head to any point to be measured, greatly improving the detection efficiency, ensuring the consistency of the measurement point, and reducing human error. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 This is a schematic diagram of the base plate structure of this utility model.

[0020] Figure 3 This is a structural schematic diagram of the support base and slide of this utility model.

[0021] Figure 4 This is a schematic diagram of the fixing frame structure of this utility model.

[0022] The attached diagram is labeled as follows: 1. Base plate; 2. Fixing frame; 3. Fixing seat; 4. Bidirectional lead screw; 5. Slide rod; 6. Slide table one; 7. Clamp; 8. Support seat; 9. Drive motor one; 10. Conical top block; 11. Through hole; 12. Support roller; 13. Square opening; 14. Slide carriage; 15. Electric push rod; 16. Screw; 17. Slide table two; 18. Drive motor two; 19. Fixing block; 20. Cleaning cotton; 21. Coating thickness gauge; 22. Base frame; 23. Drive roller frame; 24. Drive motor three. Detailed Implementation

[0023] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. This utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] Reference Figures 1-4This utility model provides a device for detecting the coating thickness on the surface of a calender auxiliary roll, including a base plate 1. A support assembly for supporting the calender auxiliary roll is provided on the upper surface of the base plate 1. A fixing frame 2 is bolted to the upper surface of the base plate 1. Multiple square openings 13 are provided on the top wall of the fixing frame 2. A slide 14 is slidably connected within each of the square openings 13. An electric push rod 15 is bolted to the top inner wall of the slide 14 and the top outer wall of the fixing frame 2. A slide table 17 is slidably connected to the bottom of the slide 14. The slide 14 is located below the fixing frame 2. A screw 16 is rotatably connected between the inner walls of both sides via a bearing seat, and the screw 16 passes through a threaded cylinder on the slide table 17 and is threadedly connected to the threaded cylinder. A drive motor 18 for rotating the screw 16 axially is fixedly connected to one outer wall of the slide 14 via bolts. Two fixing blocks 19 are fixedly connected to the lower surface of the slide table 17 via bolts. Cleaning cotton 20 is adhered to the bottom end of both fixing blocks 19. The cleaning cotton 20 has a certain toughness. A coating thickness gauge 21 (model: DR330 coating thickness gauge) is fixedly connected between the two fixing blocks 19 via bolts.

[0025] In this application, an annular groove is axially provided on the inner wall of the threaded cylinder below the slide 14. A nylon 66 damping ring with a Shore hardness of 85A is embedded in the groove. The continuous axial clamping force generated by its elastic deformation forms a helical angle interference fit with the surface of the screw 16 at 15°-20°. When the threaded pair is subjected to axial vibration load, the nylon insert can generate a maximum elastic compression of 0.3mm, which increases the friction coefficient between the thread contact surfaces from 0.15 to 0.68 (tested according to ASTM D1894 standard), effectively suppressing loosening displacement caused by thread springback.

[0026] Fixing blocks 19 with cleaning cotton 20 are set on both sides of the measuring head of the coating thickness gauge 21, integrating cleaning and detection functions, significantly improving measurement accuracy. During measurement, the cleaning cotton automatically wipes the surface of the point to be measured to remove dust, oil and other impurities, effectively avoiding interference from surface contaminants on the accuracy of non-destructive testing, and ensuring the authenticity and accuracy of the thickness data.

[0027] The detection head is precisely controlled to move along the roller axis by the drive motor 18 and screw 16 mechanism, which can quickly and accurately move the measuring head to any point to be measured, greatly improving the detection efficiency, ensuring the consistency of the measurement point, and reducing human error.

[0028] Before testing, the auxiliary roller on the drive roller frame 23 is slowly rotated by the drive motor 24 to drive the rotating roller 24. The cleaning cotton 20 wipes away dust, oil and other impurities from the surface of the point to be tested, so as to avoid impurities affecting the measurement results. During the rotation cleaning process, the probe of the coating thickness gauge 21 is kept facing the cleaned area. The coating thickness gauge 21 will contact the surface of the coating to be tested and directly display the coating thickness value at that point. The operator can record this data.

[0029] Furthermore, the carriage 14 is engraved with a scale for indicating the horizontal movement distance of the slide table 17.

[0030] In this utility model, the bearing assembly includes two support seats 8 that are fixedly connected to the upper surface of the base plate 1 by bolts. Each of the two support seats 8 has multiple through holes 11. Support rollers 12 are fixedly connected to the multiple through holes 11 symmetrically by bolts. The axis lines of the multiple support rollers 12 are parallel to each other and located on the same horizontal plane. A clamping assembly for locking the two ends of the calender auxiliary roller is provided on the upper surface of the base plate 1 and below the bearing assembly.

[0031] First, the sub-roll of the calender to be tested is placed on multiple support rollers 12 on two support seats 8 of the bearing assembly. The support roller group forms a V-shaped or planar support structure, which can stably support the sub-roll and allow it to rotate easily.

[0032] Furthermore, the clamping assembly includes two fixed seats 3 bolted to the upper surface of the base plate 1, two slide rods 5 bolted between the two fixed seats 3, two slide tables 6 slidably connected to the two slide rods 5, a bidirectional lead screw 4 rotatably connected between the two fixed seats 3 via bearing seats, and the bidirectional lead screw 4 passes through the threaded cylinders on the two slide tables 6 and is threadedly connected to the threaded cylinders. A drive motor 9 for rotating the bidirectional lead screw 4 axially is bolted to one side of one of the fixed seats 3. Clamping brackets 7 are bolted to the upper surfaces of both slide tables 6, and conical top blocks 10 are rotatably connected to the opposite sides of the two clamping brackets 7 via bearing seats. The bearing seats rotatably connected to the conical top blocks 10 and the clamping brackets 7 are waterproof bearings.

[0033] In this application, the inner wall of the threaded cylinder on the slide table 6 is provided with an annular groove, and a nylon 66 damping ring with a Shore hardness of 85A is embedded in the groove. The continuous axial clamping force generated by its elastic deformation forms a helical angle interference fit with the surface of the double-acting screw 4 at 15°-20°. When the threaded pair is subjected to axial vibration load, the nylon insert can generate a maximum elastic compression of 0.3mm, which increases the friction coefficient between the thread contact surfaces from 0.15 to 0.68 (tested according to ASTM D1894 standard), effectively suppressing the loosening displacement caused by thread springback.

[0034] It adopts a bidirectional lead screw structure driven by a drive motor 9 to clamp the axis of the auxiliary roller. The tapered surface design gives it a self-centering function, which can automatically center auxiliary rollers of different lengths, ensuring that their axis line is stable and consistent with the detection plane. It is quick and stable to clamp and is suitable for auxiliary rollers of various specifications of calenders, with strong versatility.

[0035] Then, the drive motor 9 of the clamping assembly is started, which drives the bidirectional lead screw 4 to rotate. Since the bidirectional lead screw 4 is threadedly connected to the two slides 6, the forward and reverse rotation of the motor will drive the two slides 6 to move towards or away from each other along the slide bar 5. The movement on the slides 6 will drive the clamp 7 and the conical top block 10 on its top to move synchronously. By controlling the drive motor 9, the two conical top blocks 10 are pushed in from the two ends of the auxiliary roller. Using the self-centering principle of the conical surface, the auxiliary roller is accurately fixed at the preset detection position and its axis is kept stable.

[0036] It should be noted that drive motor 1 (9), drive motor 2 (18), and drive motor 3 (24) are existing technologies. They are servo motors with encoders, and the number of rotations and rotation angles of the motor output shaft are controllable and highly accurate. Those skilled in the art can set them according to actual needs, which will not be elaborated here.

[0037] In this utility model, two symmetrical base frames 22 are fixedly connected to the lower surface of the slide 14 by bolts, and a drive roller frame 23 is fixedly connected to the lower surface of the base frame 22 by bolts. A drive motor 24 for rotating the rotating roller is fixedly connected to one side of the drive roller frame 23 by bolts.

[0038] Then, the electric push rod 15 is activated to retract, which in turn drives the carriage 14 to move downward along the square opening 13, thereby moving the cleaning cotton 20 at the bottom of the fixing block 19 downward until the cleaning cotton 20 contacts the auxiliary roller.

[0039] It should be noted that the electric push rod 15 is existing technology and can be used with magnetic switches, proximity switches or photoelectric switches to achieve precise control of the push rod's extension and retraction displacement. Those skilled in the art can set it according to actual needs, which will not be elaborated here.

[0040] The use of this utility model involves the following steps:

[0041] S1: Workpiece clamping and positioning. First, place the sub-roll of the calender to be inspected on multiple support rollers 12 on the two support seats 8 of the bearing assembly. The support roller group forms a V-shaped or planar support structure, which can stably support the sub-roll and make it easy to rotate.

[0042] S2: Then start the drive motor 9 of the clamping assembly, which drives the bidirectional lead screw 4 to rotate. Since the bidirectional lead screw 4 is threadedly connected to the two slides 6, the forward and reverse rotation of the motor will drive the two slides 6 to move towards or away from each other along the slide bar 5. The movement on the slides 6 will drive the clamp 7 and the conical top block 10 on its top to move synchronously. By controlling the drive motor 9, the two conical top blocks 10 are pushed in from the two ends of the auxiliary roller. Using the self-centering principle of the conical surface, the auxiliary roller is accurately fixed at the preset detection position and its axis is kept stable.

[0043] S3: Then start the electric push rod 15 to retract, which in turn drives the carriage 14 to move downward along the square opening 13, thereby moving the cleaning cotton 20 at the bottom of the fixed block 19 downward until the cleaning cotton 20 contacts the auxiliary roller.

[0044] S4: Cleaning before testing. Driven by the drive motor 24, the rotating roller on the drive roller frame 23 slowly rotates the auxiliary roller, so that the cleaning cotton 20 wipes away the dust, oil and other impurities on the surface of the point to be tested, so as to avoid the impurities affecting the measurement results. During the rotation cleaning process, keep the probe of the coating thickness gauge 21 facing the cleaned area. The coating thickness gauge 21 will contact the surface of the coating to be tested and directly display the coating thickness value at that point. The operator can record this data.

[0045] Finally, the following points should be noted: In the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection" and "linkage" should be interpreted broadly, and can be mechanical or electrical connection, or internal connection between two components, or direct connection. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationship. When the absolute position of the described object changes, the relative positional relationship may change.

[0046] The electronic components and modules used in this utility model can all be parts that are commonly used in the market and can achieve the specific functions in this case. The specific models and sizes can be selected and adjusted according to actual needs.

[0047] The accompanying drawings of the embodiments disclosed in this utility model only involve the structures involved in the embodiments disclosed in this utility model. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other.

Claims

1. A device for detecting the coating thickness on the surface of a calender auxiliary roll, comprising a base plate (1), characterized in that: The upper surface of the base plate (1) is provided with a bearing assembly for supporting the auxiliary roll of the calender. A fixed frame (2) is fixedly connected to the upper surface of the base plate (1). Multiple square openings (13) are opened on the top wall of the fixed frame (2). A slide (14) is slidably connected in the multiple square openings (13). An electric push rod (15) is fixedly connected between the top inner wall of the slide (14) and the top outer wall of the fixed frame (2). A slide table (17) is slidably connected to the bottom of the slide (14). The slide (14) is located below the fixed frame (2). A screw (16) is rotatably connected between the inner walls on both sides of the square position via a bearing seat, and the screw (16) passes through the threaded cylinder on the slide table (17) and is threadedly connected to the threaded cylinder. A drive motor (18) for rotating the screw (16) axially is fixedly connected to one side of the outer wall of the slide (14). Two fixing blocks (19) are fixedly connected to the lower surface of the slide table (17). Cleaning cotton (20) is glued to the bottom end of the two fixing blocks (19). A coating thickness gauge (21) is fixedly connected between the two fixing blocks (19).

2. The calender auxiliary roll surface coating thickness detection device according to claim 1, characterized in that: The bearing assembly includes two support seats (8) fixedly connected to the upper surface of the base plate (1). Each of the two support seats (8) has multiple through holes (11). Support rollers (12) are fixedly connected to the multiple through holes (11) at symmetrical positions. A clamping assembly for clamping the two ends of the calender auxiliary roller is provided on the upper surface of the base plate (1) and below the bearing assembly.

3. The calender auxiliary roll surface coating thickness detection device according to claim 2, characterized in that: The clamping assembly includes two fixed seats (3) fixedly connected to the upper surface of the base plate (1), two slide rods (5) fixedly connected between the two fixed seats (3), two slide tables (6) slidably connected on the two slide rods (5), a bidirectional lead screw (4) rotatably connected between the two fixed seats (3) through a bearing seat, and the bidirectional lead screw (4) passes through the threaded cylinder on the two slide tables (6) and is threadedly connected to the threaded cylinder. A drive motor (9) for rotating the bidirectional lead screw (4) along the axial direction is fixedly connected to one side of one of the fixed seats (3). A clamp (7) is fixedly connected to the upper surface of each of the two slide tables (6), and a conical top block (10) is rotatably connected to the opposite side of each of the two clamps (7) through a bearing seat.

4. The calender auxiliary roll surface coating thickness detection device according to claim 1, characterized in that: The lower surface of the slide (14) is fixedly connected to two symmetrical base frames (22), the lower surface of the base frame (22) is fixedly connected to a drive roller frame (23), and a drive motor (24) for rotating the rotating roller is fixedly connected to one side of the drive roller frame (23).

5. The calender auxiliary roll surface coating thickness detection device according to claim 1, characterized in that: The cleaning cotton (20) has a certain degree of toughness.

6. The calender auxiliary roll surface coating thickness detection device according to claim 2, characterized in that: The centerlines of the multiple support rollers (12) are parallel to each other and located on the same horizontal plane.

7. The calender auxiliary roll surface coating thickness detection device according to claim 1, characterized in that: The slide (14) is engraved with a scale for indicating the horizontal movement distance of the slide (17).

8. The calender auxiliary roll surface coating thickness detection device according to claim 3, characterized in that: The bearing seat in which the conical top block (10) is rotatably connected to the clamp (7) is a waterproof bearing.

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