A press roll surface defect detection device

Abstract

The utility model provides a kind of film press roller surface defect detection device, comprising: positioning clamp seat one and movable seat, the positioning clamp seat one right side is equipped with a set of positioning clamp seat two for with it cooperation is carried out to the upper shell and is pressed down and hold, the positioning clamp seat one, positioning clamp seat two front side lower end is equipped with a set of pressure head for the upper shell is connected fixed, compared with prior art, the utility model has the beneficial effects as follows: after starting device, motor drives film press roller uniform speed rotation, slide rail one and slide rail two are adjusted movable seat position in coordination, so that the multiple ultrasonic sensors in arc cover are accurately close to the front side of roll surface, control component real-time acquisition sensor data, detect surface gap and other defects, while vibration acceleration sensor monitors rotating dynamic balance state, the spectrum confocal displacement sensor of upper detection plate is scanned on the upper surface of roll body synchronously, realize multidimensional defect detection.

Description

Technical Field

[0001] This utility model belongs to the field of film pressing roller inspection technology, and relates to a film pressing roller surface defect detection device. Background Technology

[0002] The main shortcomings of existing film pressing rollers in detecting surface defects lie in their accuracy, speed, and adaptability. Due to variations in the reflectivity, transparency, or color depth of the film pressing roller surface, conventional visual inspection systems struggle to accurately identify defects, resulting in insufficient accuracy. When the film pressing roller operates at high speeds, existing inspection equipment often cannot keep up, leading to missed detections or misjudgments. The significant differences in the shape and size of film pressing rollers limit the adaptability of conventional inspection equipment, necessitating frequent adjustments or replacements and impacting production efficiency.

[0003] These shortcomings stem from limitations in existing technologies, such as performance constraints of light sources and sensors, deficiencies in image processing algorithms, and inflexibility of mechanical structures. Conventional solutions include using high-resolution cameras, enhancing the uniformity and intensity of light sources, and improving image processing algorithms to increase recognition accuracy. Simultaneously, increasing the automation level of the detection equipment can improve detection speed and adaptability; however, these methods also have drawbacks. For example, high-resolution cameras are expensive and require greater computing resources, increasing system complexity and maintenance costs. Enhanced light sources may cause discomfort to operators and may not achieve the desired results in certain environments. Furthermore, the aforementioned devices can only detect single data points and cannot comprehensively inspect roller defects. Therefore, there is an urgent need for a surface defect detection device for pressure rollers to address these issues. Utility Model Content

[0004] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a device for detecting surface defects of a film pressing roller, thereby solving the problems mentioned in the background art.

[0005] This utility model is achieved through the following technical solution: a surface defect detection device for a pressure roller, comprising: a positioning clamp first and a movable seat, wherein a set of positioning clamp second is provided on the right side of the positioning clamp first for cooperating with it to press the upper shell downward, and a set of pressure heads for connecting and fixing the upper shell is provided at the lower front side of the positioning clamp first and the positioning clamp second respectively.

[0006] Both sets of pressure heads are of the same specification and are fixed to the upper shell by bolts. The upper shell is a hollow structure with a set of detection grooves for detecting defects on the upper end of the pressing roller inside its upper end. Inside the detection grooves is a set of upper detection plates for detecting defects on the surface of the pressing roller. The lower end of the upper detection plates is equipped with a strip-shaped spectral confocal displacement sensor. The lower end of the upper shell is equipped with a set of lower shells for supporting the pressing roller to be tested. The lower shell has a cavity inside, and the pressing roller to be tested is placed between the interior of the upper shell and the interior of the lower shell.

[0007] In a preferred embodiment, the lower shell has a set of side positioning grooves on its left and right sides for maintaining the rotation and positioning of the pressing roller, and the pressing roller has a set of rotating rods inside for driving its rotation. The left side of the rotating rods is connected to an external motor.

[0008] In a preferred embodiment, the rotating rod penetrates the center of the pressing roller and the interior of two sets of side positioning grooves. Each set of positioning grooves is equipped with a positioning bearing for maintaining the positioning of the rotating rod and a vibration acceleration sensor for detecting the dynamic balance of the pressing roller rotation. In actual use, the pressing roller to be tested is first placed in the cavity of the lower shell. The center positioning of the roller is achieved by the side positioning grooves on both sides and the rotating rod. The left end of the rotating rod is connected to an external motor to provide rotational power. Positioning clamp one and positioning clamp two work together through the pressure head, and the upper shell is fixed and pressed above the pressing roller with bolts to ensure structural stability during the testing process. After the device is started, the motor drives the rotating rod to rotate the pressing roller at a uniform speed. The vibration acceleration sensor in the side positioning groove monitors the rotational dynamic balance in real time. The upper detection plate in the detection groove of the upper shell continuously scans the surface of the rotating roller through a strip-shaped spectral confocal displacement sensor and detects problems such as depressions and protrusions on the surface of the roller.

[0009] In a preferred embodiment, the front side of the lower shell is provided with a set of detection grooves for detecting defects on the surface of the pressing roller, and the detection grooves are provided with a set of side detection components for detecting defects on the surface of the pressing roller.

[0010] In a preferred embodiment, the side detection component includes an arc-shaped cover, an ultrasonic sensor, and a control assembly. The arc-shaped cover has a set of ultrasonic sensors for detecting gaps on the front surface of the pressure roller. The ultrasonic sensors are arranged in several sets in a vertical structure.

[0011] In a preferred embodiment, a control component for controlling and reading relevant detection data is provided on the rear side of several sets of ultrasonic sensors, and a movable seat for adjusting the arc-shaped cover and the front and rear positions of the ultrasonic sensors is provided at the lower end of the control component.

[0012] In a preferred embodiment, the lower end of the movable seat is provided with a set of slide rails for guiding its front and rear, the lower end of the slide rails is provided with a set of movable plates for supporting its lower end, and the lower end of the movable plates is provided with a set of movable seats for movably engaging with the slide rails.

[0013] In a preferred embodiment, the lower end of the movable seat is provided with a set of slide rails two for guiding the movable plate on both sides. The positioning clamps one and two are of the same specification and are both vertical clamps. The lower ends of the positioning clamps one and two are respectively provided with a set of support platforms for supporting their lower ends. In actual use, the pressing roller is first installed in the cavity of the lower shell, and the center positioning is achieved by the side positioning grooves and the rotating rod. The left end of the rotating rod is connected to an external motor to drive the roller to rotate. The positioning clamps one and two are fixed to the upper shell in cooperation through the vertical clamp structure. The pressure head bolts ensure the structural stability during the detection process. After the device is started, the motor drives the pressing roller to rotate at a uniform speed. The slide rails one and two work together to adjust the position of the movable seat, so that the multiple sets of ultrasonic sensors in the arc-shaped cover are accurately close to the front of the roller. The control component collects sensor data in real time to detect defects such as surface gaps. At the same time, the vibration acceleration sensor monitors the rotation dynamic balance state, and the spectral confocal displacement sensor of the upper detection plate scans the upper surface of the roller to realize multi-dimensional defect detection.

[0014] After adopting the above technical solution, the beneficial effects of this utility model are as follows: First, the pressure roller to be tested is placed in the cavity of the lower shell. The center positioning of the roller body is achieved by the side positioning grooves on both sides and the rotating rod. The left end of the rotating rod is connected to an external motor to provide rotation power. Positioning clamp one and positioning clamp two work together through the pressure head. The upper shell is fixed and pressed above the pressure roller by bolts to ensure structural stability during the testing process. After the device is started, the motor drives the rotating rod to drive the pressure roller to rotate at a uniform speed. The vibration acceleration sensor in the side positioning groove monitors the rotation dynamic balance state in real time. The upper detection plate in the detection groove of the upper shell continuously scans the surface of the rotating roller body through the strip-shaped spectral confocal displacement sensor and detects problems such as depressions and protrusions on the surface of the roller body.

[0015] After the device is started, the motor drives the pressure roller to rotate at a constant speed. The slide rail one and slide rail two work together to adjust the position of the movable seat, so that multiple sets of ultrasonic sensors inside the arc-shaped cover are precisely close to the front of the roller. The control component collects sensor data in real time to detect defects such as surface gaps. At the same time, the vibration acceleration sensor monitors the rotational dynamic balance state, and the spectral confocal displacement sensor on the upper detection plate scans the upper surface of the roller body synchronously to achieve multi-dimensional defect detection. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the right oblique front view and top view of the structure of the surface defect detection device for a film pressing roller according to this utility model;

[0018] Figure 2 This is a top view of the left oblique front side of the structure of the pressure roller surface defect detection device of this utility model;

[0019] Figure 3 This is a schematic diagram of the front side of the slide rail 2 in the surface defect detection device for a pressure roller of this utility model;

[0020] Figure 4 This is a right-side structural schematic diagram of the side detection component in a film roller surface defect detection device of this utility model;

[0021] In the diagram: 100-Positioning clamp one, 110-Pressure head, 120-Positioning clamp two, 130-Support platform, 140-Upper shell, 150-Upper detection plate, 160-Lower shell, 170-Side positioning groove, 180-Rotor, 190-Side detection component, 200-Slide rail one, 210-Modible plate one, 220-Slide rail two, 230-Modible seat, 240-Modible seat;

[0022] 19a - Curved cover, 19b - Ultrasonic sensor, 19c - Control components. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-4 As the first embodiment of this utility model:

[0025] A device for detecting surface defects of a film pressing roller includes: a positioning clamp 100 and a movable seat 240. The right side of the positioning clamp 100 is provided with a second positioning clamp 120 for cooperating with it to press the upper shell 140 downward. The lower front end of the positioning clamp 100 and the second positioning clamp 120 are respectively provided with a set of pressure heads 110 for connecting and fixing the upper shell 140.

[0026] The two sets of pressure heads 110 are identical in specifications. Both sets of pressure heads 110 are fixed to the upper shell 140 by bolts. The upper shell 140 is a hollow structure. A set of detection grooves for detecting defects on the upper end of the pressing roller is opened inside the upper end. An upper detection plate 150 for detecting defects on the surface of the pressing roller is installed inside the detection groove. A strip-shaped spectral confocal displacement sensor is installed at the lower end of the upper detection plate 150. A lower shell 160 for supporting the pressing roller to be tested is installed at the lower end of the upper shell 140. The lower shell 160 has a cavity inside. The pressing roller to be tested is placed between the interior of the upper shell 140 and the interior of the lower shell 160.

[0027] The lower shell 160 has a set of side positioning grooves 170 on the left and right sides to keep the pressure roller rotating and positioned. The pressure roller has a set of rotating rods 180 inside to drive it to rotate. The left side of the rotating rods 180 is connected to an external motor.

[0028] The rotating rod 180 penetrates the center of the pressing roller and the interior of the two sets of side positioning grooves 170. Each set of positioning grooves is equipped with a positioning bearing for maintaining the positioning of the rotating rod 180 and a vibration acceleration sensor for detecting the dynamic balance of the pressing roller rotation. In actual use, the pressing roller to be tested is first placed in the cavity of the lower shell 160. The center positioning of the roller is achieved by the side positioning grooves 170 and the rotating rod 180. The left end of the rotating rod 180 is connected to an external motor to provide rotational power. The positioning clamp 100 and the positioning clamp 120 work together through the pressure head 110. The upper shell 140 is fixed and pressed above the pressing roller with bolts to ensure structural stability during the testing process. After the device is started, the motor drives the rotating rod 180 to rotate the pressing roller at a uniform speed. The vibration acceleration sensor in the side positioning groove 170 monitors the rotational dynamic balance in real time. The upper detection plate 150 in the detection groove of the upper shell 140 continuously scans the surface of the rotating roller through a strip-shaped spectral confocal displacement sensor and detects problems such as depressions and protrusions on the surface of the roller.

[0029] Please see Figures 1-4 As a second embodiment of the present invention: based on the description in the above embodiments, further, a set of detection grooves for detecting defects on the surface of the pressing roller is provided on the front side of the lower shell 160, and a set of side detection components 190 for detecting defects on the surface of the pressing roller is provided inside the detection grooves.

[0030] The side detection component 190 includes an arc-shaped cover 19a, an ultrasonic sensor 19b, and a control component 19c. The arc-shaped cover 19a has a set of ultrasonic sensors 19b for detecting gaps on the front surface of the pressure roller. Several sets of ultrasonic sensors 19b are arranged in a vertical structure.

[0031] A control component 19c for controlling and reading relevant detection data is provided on the rear side of several sets of ultrasonic sensors 19b. At the lower end of the control component 19c is a movable seat 240 for adjusting the front and rear positions of the arc-shaped cover 19a and the ultrasonic sensors 19b.

[0032] The lower end of the movable seat 240 is provided with a set of slide rails 200 for guiding its front and rear. The lower end of the slide rails 200 is provided with a set of movable plates 210 for supporting its lower end. The lower end of the movable plates 210 is provided with a set of movable seats 230 for moving and engaging with the slide rails 220.

[0033] The lower end of the movable seat 230 is equipped with a set of slide rails 220 for guiding the movable plate on both sides. Positioning clamp 100 and positioning clamp 220 are of the same specifications and are both vertical clamps. The lower ends of positioning clamp 100 and positioning clamp 220 are respectively equipped with a set of support platforms 130 for supporting their lower ends. In actual use, the pressure roller is first installed in the cavity of the lower shell 160, and center positioning is achieved through the side positioning grooves 170 and the rotating rod 180. The left end of the rotating rod 180 is connected to an external motor to drive the roller to rotate. The upper shell 140 is fixed by the vertical clamp structure together with the positioning clamp 120 and the positioning clamp 110 bolt to ensure the structural stability during the detection process. After the device is started, the motor drives the pressure roller to rotate at a constant speed. The slide rail 120 and the slide rail 220 work together to adjust the position of the movable seat 240 so that the multiple sets of ultrasonic sensors 19b in the arc cover 19a are precisely close to the front side of the roller. The control component 19c collects sensor data in real time to detect defects such as surface gaps. At the same time, the vibration acceleration sensor monitors the rotation dynamic balance state. The spectral confocal displacement sensor of the upper detection plate 150 scans the upper surface of the roller body synchronously to realize multi-dimensional defect detection.

[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A platen roller surface defect detection apparatus, comprising: The positioning clamp (100) and the movable seat (240) are characterized in that: the right side of the positioning clamp (100) is provided with a set of positioning clamps (120) for cooperating with it to press the upper shell (140) downward; the lower front end of the positioning clamp (100) and the positioning clamp (120) are respectively provided with a set of pressure heads (110) for connecting and fixing the upper shell (140); The two sets of pressure heads (110) are identical in specifications. Both sets of pressure heads (110) are fixed to the upper shell (140) by bolts. The upper shell (140) is a hollow structure. A set of detection grooves for detecting defects on the upper end of the pressing roller is provided inside the upper end. An upper detection plate (150) for detecting defects on the surface of the pressing roller is provided inside the detection groove. A strip-shaped spectral confocal displacement sensor is provided at the lower end of the upper detection plate (150). A lower shell (160) for supporting the pressing roller to be tested is provided at the lower end of the upper shell (140). The lower shell (160) has a cavity inside. The pressing roller to be tested is placed between the interior of the upper shell (140) and the interior of the lower shell (160).

2. A press roll surface defect detection apparatus according to claim 1, characterized by: The lower shell (160) is provided with a set of side positioning grooves (170) on the left and right sides respectively for maintaining the rotation and positioning of the pressing roller. The pressing roller is provided with a set of rotating rods (180) for driving its rotation. The left side of the rotating rods (180) is connected to an external motor.

3. A press roll surface defect detection apparatus according to claim 2, characterized in that: The rotating rod (180) passes through the center of the pressure roller and the interior of two sets of side positioning grooves (170). Each set of positioning grooves is provided with a positioning bearing for maintaining the positioning of the rotating rod (180) and a vibration acceleration sensor for detecting the dynamic balance of the pressure roller rotation.

4. A press roll surface defect detection apparatus according to claim 3, characterized by: The lower shell (160) has a set of detection grooves on the front side for detecting defects on the surface of the pressing roller, and a set of side detection components (190) for detecting defects on the surface of the pressing roller is provided inside the detection grooves.

5. The device for detecting surface defects of a film pressing roller according to claim 4, characterized in that: The side detection component (190) includes an arc-shaped cover (19a), an ultrasonic sensor (19b), and a control component (19c). The arc-shaped cover (19a) is provided with a set of ultrasonic sensors (19b) for detecting gaps on the front surface of the pressure roller. Several sets of ultrasonic sensors (19b) are provided and arranged in a vertical structure.

6. The device for detecting surface defects of a film pressing roller according to claim 5, characterized in that: A set of control components (19c) for controlling and reading relevant detection data is provided on the rear side of several sets of ultrasonic sensors (19b). The lower end of the control components (19c) is provided with a set of movable seats (240) for adjusting the front and rear positions of the arc-shaped cover (19a) and the ultrasonic sensors (19b).

7. The device for detecting surface defects of a pressure roller according to claim 6, characterized in that: The lower end of the movable seat (240) is provided with a set of slide rails (200) for guiding its front and rear. The lower end of the slide rails (200) is provided with a set of movable plates (210) for supporting its lower end. The lower end of the movable plates (210) is provided with a set of movable seats (230) for moving and engaging with the slide rails (220).

8. The device for detecting surface defects of a pressure roller according to claim 7, characterized in that: The lower end of the movable seat (230) is provided with a set of slide rails (220) for guiding the movable plate on the left and right sides. The positioning clamps (100) and (120) are of the same specifications. The positioning clamps (100) and (120) are of the same specifications and are both vertical clamps. The lower ends of the positioning clamps (100) and (120) are respectively provided with a set of support platforms (130) for supporting their lower ends.

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