A novel plastic steel formwork surface flatness detection device and detection method

Abstract

The present application relates to the technical field of flatness detection, in particular to a novel plastic steel formwork surface flatness detection device and method, the device comprises a detection box, a conveying roller and an optical detection assembly, a spacing adjustment mechanism, a driving assembly and a plurality of reflective material coating units are arranged on the detection box; the spacing adjustment mechanism is expanded along the length direction of the detection box, driving the plurality of reflective material coating units to expand at equal intervals to match different specifications of plastic steel formwork. The driving assembly drives the reflective material coating unit to contact the plastic steel formwork, so that the surface of the plastic steel formwork forms regularly arranged reflective marker points, so that the plastic steel formwork does not need to attach a reflective film during detection, thereby reducing the problem of insufficient detection accuracy caused by possible bubbles in the reflective film attachment. Since there is no need to attach and peel off the reflective film, the additional operation steps are reduced, the detection efficiency of the production line is significantly improved, and it is suitable for continuous production.

Description

Technical Field

[0001] This invention relates to the field of flatness testing technology, specifically to a novel device and method for testing the surface flatness of plastic steel templates. Background Technology

[0002] The flatness inspection of sheet materials is generally divided into contact inspection methods, such as using a straightedge, feeler gauge, and dial indicator, and non-contact inspection methods, such as laser triangulation, visual inspection, and ultrasonic testing. Nowadays, non-contact inspection methods are generally used for sheet materials to improve convenience and accuracy.

[0003] For example, a bridge steel formwork flatness testing device disclosed in Chinese Patent Publication No. CN117553712B uses an adhesive component to attach a reflective film to the plate to be tested. A laser beam is emitted onto the reflective film, which reflects the light. If the light is refracted and received by a photosensitive sensor, it indicates that the flatness is substandard. This method can test the entire formwork, overcoming the limitations of existing technologies and effectively detecting the flatness of large-area steel formwork. However, there is a problem with this method: if the reflective film is only attached to a portion of the plate, it becomes cumbersome; if the film is attached to the entire plate, the adhesion between the film and the plate becomes an issue, affecting the accuracy of the test. Summary of the Invention

[0004] To address the aforementioned issues, a novel device and method for detecting the surface flatness of PVC-U formwork is provided. A spacing adjustment mechanism unfolds along the length of the detection box, driving multiple reflective material coating units to unfold at equal intervals to match PVC-U formwork of different specifications. A drive assembly brings the reflective material coating units into contact with the PVC-U formwork, creating regularly arranged reflective markings on the surface. This eliminates the need for applying reflective film during detection, reducing the risk of air bubbles and insufficient detection accuracy. Since the application and removal of reflective film is eliminated, additional operational steps are reduced, significantly improving the detection efficiency of the production line and making it suitable for continuous production.

[0005] To address the problems of existing technologies, this invention provides a novel surface flatness testing device for PVC templates, comprising a testing box and a conveyor roller disposed below the testing box. An optical testing component is installed inside the testing box, and a spacing adjustment mechanism that can extend along the length of the testing box is installed on the testing box. Multiple equally spaced reflective material coating units are installed on the spacing adjustment mechanism. A drive component is located beside the spacing adjustment mechanism, capable of moving the reflective material coating units toward the PVC template on the conveyor roller. Through the contact between the reflective material coating units and the PVC template, regularly arranged reflective markings are formed on the surface of the PVC template. The optical testing component inside the testing box detects the multiple reflective markings on the PVC template. If the light intensity emitted by the reflective markings exceeds or falls below a threshold set by the program, the flatness of the PVC template is considered substandard.

[0006] Preferably, the spacing adjustment mechanism includes a fork-shaped frame, which has a fixed end that is fixedly connected to the center of the detection box and two movable ends that can slide relative to each other along the length of the detection box. Multiple reflective material coating units are disposed on the fork-shaped frame.

[0007] Preferably, the reflective material coating unit includes a support frame mounted on the spacing adjustment mechanism. A mounting shaft extending along the length of the test box is provided on the side of the support frame away from the test box. A transmission frame is sleeved on the mounting shaft, and the transmission frame is provided with a coating head capable of coating the plastic steel template.

[0008] Preferably, the fork-shaped frame is provided with a guide shaft extending along the length of the detection box, and the support frames of all reflective material coating units are sleeved on the guide shaft. Linear actuators are provided on both sides of the fixed end and hinged thereto, and the other ends of the two linear actuators are respectively hinged to the two moving ends.

[0009] Preferably, the transmission frame is provided with a mounting plate that can extend in the horizontal direction, and the transmission frame is provided with an elastic element connected to the support frame. The drive assembly is provided with a drive frame that can slide in the height direction of the detection box. The drive frame is located below the mounting plate. When the drive frame slides in the height direction of the detection box, it can drive the mounting plate to move.

[0010] Preferably, the mounting plate is provided with a slide groove extending along its length direction, and the drive assembly also includes a sliding rod that can extend along the length direction of the detection box. The sliding rod is mounted on the drive frame, and the sliding rod is provided with drive heads that are the same number as and correspond one-to-one with the reflective material coating units. The drive heads are slidably mounted on the sliding rod, and the bottom of the drive heads is slidably mounted in the slide groove. The bottom of the drive heads is located below the slide groove and is provided with a pop-out drive rod.

[0011] Preferably, an electromagnet that can slide along its length is provided at the top of the inner part of the drive head. The electromagnet is elastically connected to the drive head. Two drive rods are rotatably arranged inside the drive head. A connecting rod that is hinged to the electromagnet is provided in the middle of the drive rod.

[0012] Preferably, the testing box is equipped with a sensor capable of measuring the length of the plastic steel template.

[0013] Preferably, the conveyor roller is equipped with two guide rods that can center and clamp the plastic steel template.

[0014] A method for detecting the surface flatness of PVC-U formwork, applied to the aforementioned novel PVC-U formwork surface flatness detection device, includes the following steps:

[0015] S1. Place the plastic steel template on the conveyor roller, start the conveyor roller to drive the plastic steel template to move along the width direction of the inspection box, so that it passes through the spacing adjustment mechanism and the inspection box in sequence;

[0016] S2. The spacing adjustment mechanism expands or contracts along the length of the detection box, causing multiple reflective material coating units to automatically adjust their spacing so that they cover the effective detection area of ​​the plastic steel template.

[0017] S3. The drive component moves the reflective material coating unit toward the surface of the plastic steel template and applies pressure to form regularly arranged reflective markings on the surface of the plastic steel template.

[0018] S4. After the plastic steel template enters the inspection box, the optical inspection component collects and analyzes the reflected light signal of the reflective marking point. If the reflective brightness of a certain marking point exceeds the preset threshold range, it is determined that there is a flatness defect.

[0019] The advantages of this invention compared to the prior art are:

[0020] 1. This invention uses a spacing adjustment mechanism that unfolds along the length of the testing box, driving multiple reflective material coating units to unfold at equal intervals to match different specifications of plastic steel templates. This eliminates the need for individual equipment adjustments for different plastic steel templates, improving equipment compatibility. The drive assembly brings the reflective material coating units into contact with the plastic steel template, forming regularly arranged reflective markings on the template's surface. This eliminates the need for attaching reflective film during testing, reducing the risk of insufficient testing accuracy due to air bubbles in the reflective film. Since the application and removal of reflective film is eliminated, additional operational steps are reduced, significantly improving the testing efficiency of the production line and making it suitable for continuous production.

[0021] 2. To ensure that the drive frame moves only the coating head located on the plastic steel template during lifting, this invention includes a chute, a sliding rod, a drive head, and a drive rod. By adjusting the extension of the drive rod, only the coating head on the plastic steel template is driven, ensuring the accuracy of the coating operation, avoiding unnecessary paint consumption, and improving material utilization. Coating heads not involved in the coating operation remain stationary to prevent accidental contact with the conveyor rollers, thereby reducing the risk of equipment damage and extending the overall equipment lifespan.

[0022] 3. This invention uses two guide rods to center and clamp the plastic steel template, ensuring its stability and central position within the detection device during transport. This prevents the template from shifting during transport, allowing for precise alignment of reflective markings and improving the accuracy of optical detection. It also prevents the template from wobbling or shifting on the conveyor rollers, reducing detection errors caused by inaccurate positioning. Attached Figure Description

[0023] Figure 1 This is a three-dimensional structural diagram of a novel plastic steel template surface flatness detection device.

[0024] Figure 2 This is a side view of a novel plastic steel formwork surface flatness detection device.

[0025] Figure 3 A three-dimensional structural diagram of the spacing adjustment mechanism and drive assembly in a novel plastic steel formwork surface flatness testing device. Figure 1 ;

[0026] Figure 4 A three-dimensional structural diagram of the spacing adjustment mechanism and drive assembly in a novel plastic steel formwork surface flatness testing device. Figure 2 ;

[0027] Figure 5 This is a three-dimensional structural diagram of the spacing adjustment mechanism in a novel plastic steel template surface flatness detection device;

[0028] Figure 6 yes Figure 3 Enlarged view of point A in the middle;

[0029] Figure 7 yes Figure 5 Enlarged view of point B in the middle;

[0030] Figure 8 A three-dimensional structural diagram of the reflective material coating unit in a novel plastic steel formwork surface flatness testing device. Figure 1 ;

[0031] Figure 9 A three-dimensional structural diagram of the reflective material coating unit in a novel plastic steel formwork surface flatness testing device. Figure 2 ;

[0032] Figure 10 This is a three-dimensional structural diagram of the drive head in a novel plastic steel template surface flatness detection device.

[0033] The diagram is labeled as follows: 1. Detection box; 11. Conveyor roller; 111. Guide rod; 12. Drive assembly; 121. Drive frame; 1211. Sliding rod; 1212. Drive head; 12121. Drive rod; 12122. Electromagnet; 12123. Connecting rod; 12124. Sensor; 2. Spacing adjustment mechanism; 21. Reflective material coating unit; 211. Support frame; 2111. Mounting shaft; 212. Transmission frame; 2121. Coating head; 2122. Mounting plate; 2123. Slide groove; 2124. Elastic element; 213. Guide shaft; 22. Fork frame; 221. Fixed end; 2211. Linear actuator; 222. Moving end; 3. Plastic steel template. Detailed Implementation

[0034] To further understand the features, technical means, and specific objectives and functions achieved by the present invention, the present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

[0035] like Figures 1 to 4 As shown: A novel plastic steel template surface flatness detection device includes a detection box 1 and a conveyor roller 11 disposed below the detection box 1. The detection box 1 is equipped with an optical detection component, and the detection box 1 is equipped with a spacing adjustment mechanism that can be extended along the length direction of the detection box 1. The spacing adjustment mechanism is equipped with a plurality of equally spaced reflective material coating units 21. A drive component 12 is disposed on the side of the spacing adjustment mechanism, which can drive the reflective material coating units 21 to move towards the plastic steel template 3 on the conveyor roller 11. Through the contact between the reflective material coating units 21 and the plastic steel template 3, the surface of the plastic steel template 3 forms regularly arranged reflective marking points. The optical detection component in the detection box 1 detects the plurality of reflective marking points on the plastic steel template 3. If the light intensity emitted by the reflective marking points exceeds or falls below the threshold set by the program, the flatness of the plastic steel template 3 is not up to standard.

[0036] First, the plastic steel template 3 is placed on the conveyor roller 11. The conveyor roller 11 drives the plastic steel template 3 through the inspection box 1. Before passing through the inspection box 1, the spacing adjustment mechanism is driven first. The spacing adjustment mechanism unfolds along the length of the inspection box 1, driving multiple reflective material coating units 21 to unfold at equal intervals to match plastic steel templates 3 of different specifications. There is no need to adjust the equipment separately for different plastic steel templates 3, which improves the compatibility of the equipment.

[0037] By activating the drive assembly 12 (which can be a cylinder or an electric actuator), the reflective material coating unit 21 is driven to contact the plastic steel template 3. Combined with the movement of the conveyor roller 11, this creates a regularly arranged array of reflective markings on the surface of the plastic steel template 3. These markings are arranged in a rectangular row. After the plastic steel template 3 enters the inspection box 1, the optical inspection component (not shown in the figure) inside the inspection box 1 inspects multiple reflective markings on the plastic steel template 3. If the light intensity emitted by the reflective markings exceeds or falls below the threshold set by the program, it means that the flatness of the plastic steel template 3 is substandard. The equipment marks this location for subsequent repair or secondary inspection. The reflective material coating unit 21 is located beside the equipment. A feeding mechanism for supplying reflective material is provided (the reflective material coating unit 21 is connected to the feeding mechanism via a pipe), so that the plastic steel template 3 does not need to be attached to reflective film during testing. This reduces the problem of insufficient testing accuracy caused by air bubbles that may exist when attaching reflective film, and also avoids the need to separate the reflective film after testing. Although reflective film can be recycled, it may deform after being attached multiple times, which is not conducive to multiple testing operations on the production line. With the setting of reflective material coating unit 21, reflective material is coated on the surface of plastic steel template 3. The reflective material is preferably a powder or liquid coating agent, which does not need to be removed after testing and will not affect the subsequent use of plastic steel template 3, thereby simplifying the process and improving production convenience.

[0038] By directly coating reflective material instead of the traditional reflective film application process, detection errors caused by factors such as air bubbles and edge lifting during application are avoided, resulting in higher detection accuracy. Since there is no need for applying and peeling the reflective film, additional operating steps are reduced, significantly improving the detection efficiency of the production line and making it suitable for continuous production.

[0039] like Figures 3 to 9 As shown: The spacing adjustment mechanism includes a fork frame 22, on which a fixed end 221 fixedly connected to the center of the detection box 1 and two movable ends 222 that can slide relative to each other along the length direction of the detection box 1 are provided. Multiple reflective material coating units 21 are provided on the fork frame 22.

[0040] The fixed end 221 provides a reference point for the spacing adjustment mechanism. The opening width of the fork-shaped frame 22 is changed by the relative sliding of the two movable ends 222 along the length of the detection box 1. Multiple reflective material coating units 21 are evenly distributed on the fork-shaped frame 22, allowing the spacing of the fork-shaped frame 22 to adjust synchronously with the sliding of the movable ends 222. This ensures that the multiple reflective material coating units 21 form equidistant reflective markings on the surface of the plastic steel template 3. This allows the equipment to adapt to plastic steel templates 3 of different widths, ensuring that the reflective markings always cover the plastic steel template 3. The symmetrical sliding arrangement of the fork-shaped frame 22 eliminates the need for a complex transmission mechanism; simple linear motion is sufficient to deploy multiple reflective material coating units 21 at equal intervals on the detection box 1, facilitating subsequent coating of the plastic steel template 3 and improving the equipment's response speed.

[0041] like Figures 3 to 9 As shown: The reflective material coating unit 21 includes a support frame 211 mounted on the spacing adjustment mechanism. A mounting shaft 2111 extending along the length direction of the detection box 1 is provided on the side of the support frame 211 away from the detection box 1. A transmission frame 212 is sleeved on the mounting shaft 2111. The transmission frame 212 is provided with a coating head 2121 that can coat the plastic steel template 3.

[0042] By mounting the transmission frame 212 onto the mounting shaft 2111, the transmission frame 212 can rotate around the mounting shaft 2111, thereby driving the coating head 2121 on the transmission frame 212 to contact the plastic steel template 3. The rotation of the transmission frame 212 not only drives the multiple coating heads 2121 on it to contact the surface of the plastic steel template 3, but also dynamically adjusts the coating pressure according to the thickness or material characteristics of the plastic steel template 3, ensuring uniform coating of reflective paint and improving detection accuracy.

[0043] Specifically, during the rotation of the transmission frame 212, the coating head 2121 can precisely apply reflective paint to the surface of the plastic steel template 3 by extrusion or rolling. The coating head 2121 can move in many ways, not limited to the rotation method mentioned above. The coating head 2121 may also be vertically slidable on the transmission frame 212, or the coating head 2121 may be telescopically mounted on the transmission frame 212.

[0044] like Figures 3 to 9 As shown: A guide shaft 213 extending along the length of the detection box 1 is provided on the fork-shaped frame 22. The support frame 211 of all reflective material coating units 21 is sleeved on the guide shaft 213. Linear actuators 2211 are provided on both sides of the fixed end 221 and are hinged to it. The other end of the two linear actuators 2211 is hinged to the two moving ends 222 respectively.

[0045] The linear actuator 2211 is preferably a cylinder or an electric actuator. The two moving ends 222 are respectively fixedly connected to the support frame 211 of the reflective material coating unit 21 on both sides of the fixed end 221, so that the linear actuator 2211 can drive the moving ends 222 to slide in the length direction of the detection box 1. Since the two moving ends 222 are respectively fixedly connected to the support frame 211 on both sides of the fixed end 221, when the linear actuator 2211 is started, it pushes the moving ends 222 to move synchronously along the guide shaft 213, thereby driving the position adjustment of the reflective material coating unit 21 to adapt to different specifications of plastic steel template 3.

[0046] Since the support frame 211 of all reflective material coating units 21 is sleeved on the guide shaft 213, the reflective material coating unit 21 can slide smoothly on the guide shaft 213, ensuring the uniform distribution of coating points and improving detection accuracy.

[0047] The linear actuator 2211 can dynamically adjust the position of the moving end 222 according to the specifications of the plastic steel template 3, so that the reflective material coating unit 21 can automatically match the width range of the plastic steel template 3 without manual intervention. When the size of the plastic steel template 3 is small, the linear actuator 2211 retracts, and the moving end 222 moves closer to the fixed end 221, reducing the spacing of the reflective material coating unit 21; when the size of the plastic steel template 3 is large, the linear actuator 2211 extends, causing the moving end 222 to expand outward, increasing the spacing of the reflective material coating unit 21, thereby adapting to templates of different widths.

[0048] It should be noted that the support frame 211 will not rotate when it slides on the guide shaft 213, but can only slide. The guide shaft 213 has a guide groove (not shown in the figure) to prevent the support frame 211 from rotating.

[0049] like Figures 3 to 9 As shown: The transmission frame 212 is provided with a mounting plate 2122 that can extend in the horizontal direction, and the transmission frame 212 is provided with an elastic element 2124 connected to the support frame 211. The drive assembly 12 is provided with a drive frame 121 that can slide in the height direction of the detection box 1. The drive frame 121 is located below the mounting plate 2122. When the drive frame 121 slides in the height direction of the detection box 1, it can drive the mounting plate 2122 to move.

[0050] The coating unit can be precisely adjusted via a drive frame 121 that can slide along the height of the testing box 1. Since the drive frame 121 is located below the mounting plate 2122, when the drive frame 121 moves towards the top of the testing box 1, it drives the mounting plate 2122 to rise synchronously. The rising of the mounting plate 2122 causes the transmission frame 212 to rotate around the mounting shaft 2111, thereby causing the coating head 2121 on the transmission frame 212 to gradually approach the plastic steel template 3, enabling the coating head 2121 to uniformly coat the plastic steel template 3. Because the transmission frame 212 is equipped with an elastic element 2124, when the drive frame 121 gradually descends to its original position after coating, the elastic element 2124 will elastically contract, causing the transmission frame 212 to rotate in the opposite direction around the mounting shaft 2111. This automatically resets the coating head 2121, moving it away from the plastic steel template 3. The entire coating process requires no additional manual intervention, achieving precise control of the movement trajectory of the coating head 2121 and ensuring that plastic steel templates 3 of different specifications receive consistent coating quality. This improves the automation level of the production line.

[0051] like Figures 3 to 9 As shown: The mounting plate 2122 is provided with a slide groove 2123 extending along its length direction. The drive assembly 12 also includes a sliding rod 1211 that can extend along the length direction of the detection box 1. The sliding rod 1211 is mounted on the drive frame 121. The sliding rod 1211 is provided with drive heads 1212 that are the same number as the reflective material coating units 21 and correspond one-to-one. The drive heads 1212 are slidably disposed on the sliding rod 1211, and the bottom of the drive heads 1212 is slidably disposed in the slide groove 2123. The bottom of the drive heads 1212 is located below the slide groove 2123 and is provided with a pop-out drive rod 12121.

[0052] During the process of driving the mounting plates 2122 through the drive frame 121, each lifting and lowering of the drive frame 121 will cause all the mounting plates 2122 to move, causing the transmission frames 212 that are not on the plastic steel template 3 to rotate. This will cause the coating heads 2121 on these transmission frames 212 to move closer to the conveyor roller 11, which may cause damage to the coating heads 2121 or waste of paint.

[0053] To ensure that the drive frame 121 only moves the coating head 2121 located on the plastic steel template 3 during lifting and lowering, a slide groove 2123, a sliding rod 1211, a drive head 1212, and a drive rod 12121 are provided. Since the drive head 1212 is slidably mounted on the sliding rod 1211, and its bottom is located within the slide groove 2123, when the reflective material coating unit 21 is adjusted by the spacing adjustment mechanism 2, the drive frame 212 drives the drive head 1212 to move via the mounting plate 2122 and the slide groove 2123, allowing the drive head 1212 to slide along the sliding rod 1211. When the coating head 2121 needs to coat the plastic steel template 3, the drive frame 121 moves towards the top of the inspection box 1, causing the sliding rod 1211 to move as it moves. The movement of the sliding rod 1211 drives the movement of the drive head 1212. At this time, the drive rod 12121 at the bottom of the drive head 1212 pops out, causing it to abut against the slide groove 2123 as it moves with the drive head 1212. This drives the mounting plate 2122, causing the transmission frame 212 to rotate around the mounting shaft 2111. This enables the coating head 2121 to perform the coating operation on the plastic steel template 3. When the coating head 2121 is removed from the outside of the plastic steel template 3, the drive rod 12121 on the drive head 1212 does not pop out, so the drive head 1212 only moves along the slide groove 2123 and cannot drive the mounting plate 2122, thus keeping this part of the transmission frame 212 stationary. By controlling whether the drive rod 12121 pops out or not, only the coating head 2121 located on the plastic steel template 3 is driven, ensuring the accuracy of the coating operation, avoiding unnecessary paint consumption, and improving material utilization. The coating head 2121 that is not involved in the coating operation remains stationary to prevent it from contacting the conveyor roller 11 due to accidental operation, thereby reducing the risk of equipment damage and extending the overall equipment life.

[0054] Meanwhile, through the above method, the coating head 2121 can adjust the density of the coating head 2121 according to the size of the plastic steel template 3, and can also adjust the density of the coating head 2121 to meet the different testing requirements of the plastic steel template 3, so that the plastic steel template 3 can form a denser dotted coating, thereby further improving the testing accuracy.

[0055] It should be noted that the drive head 1212 does not rotate when sliding on the sliding rod 1211; it can only slide. The sliding rod 1211 also has a guide groove (not shown in the figure) to prevent the drive head 1212 from rotating. There are various ways to drive the drive rod 12121. An electromagnetic actuator, a miniature cylinder, a spring return mechanism, or an electric push rod can be installed inside the drive head 1212 to realize the pop-out and retraction of the drive rod 12121. These methods will not be described in detail here.

[0056] like Figures 5 to 9As shown: The top of the inside of the drive head 1212 is provided with an electromagnet 12122 that can slide along its length direction. The electromagnet 12122 is elastically connected to the drive head 1212. Two drive rods 12121 are rotatably disposed inside the drive head 1212. A connecting rod 12123 that is hinged to the electromagnet 12122 is provided in the middle of the drive rod 12121.

[0057] An electromagnet 12122 is installed at the top of the drive head 1212 and is elastically connected to the drive head 1212. When the electromagnet 12122 is energized, it slides downward along the length of the drive head 1212. Since a connecting rod 12123 is hinged on the electromagnet 12122, the connecting rod 12123 will drive the drive rod 12121 to rotate around its connection point with the drive head 1212 towards the outside of the drive head 1212. This allows the drive rod 12121 to unfold below the slide groove 2123. As the drive rod 12121 moves with the drive head 1212, it can drive the mounting plate 2122 to move, which in turn drives the transmission frame 212 to rotate. When the electromagnet 12122 is de-energized, it resets under the action of elastic force, returning to its initial position. Simultaneously, the connecting rod 12123 drives the drive rod 12121 to retract into the drive head 1212, achieving precise control of the transmission frame 212. Using the electromagnet 12122 for driving, and controlling the pop-up and retraction of the drive rod 12121 via current, avoids unnecessary coating and improves detection accuracy.

[0058] like Figure 1 As shown: The detection box 1 is equipped with a sensor 12124 that can measure the length of the plastic steel template 3.

[0059] Sensor 12124 can be a photoelectric sensor 12124, a laser rangefinder 12124, or an ultrasonic rangefinder 12124 to measure the length of the plastic steel template 3 in real time. When the plastic steel template 3 passes through the detection box 1, sensor 12124 will detect the starting point and ending point of the plastic steel template 3, calculate the actual length, and transmit the measurement data to the back-end controller.

[0060] After receiving the length data, the controller drives the spacing adjustment mechanism 2 to make corresponding adjustments based on the template specifications. This allows multiple reflective material coating units 21 to adjust their spacing for different plastic steel templates 3 to match different testing requirements. This avoids uneven coverage or repeated coating due to mismatched spacing, reducing material consumption and improving production efficiency. Sensors 12124, combined with the control system, enable data management, making the production process more intelligent and efficient, and reducing errors from manual intervention. No manual intervention is required, improving testing accuracy and automation.

[0061] like Figure 1 and Figure 2 As shown: The conveyor roller 11 is equipped with two guide rods 111 that can center and clamp the plastic steel template 3.

[0062] Two guide rods 111 are installed on the conveyor roller 11 to center and clamp the plastic steel template 3, ensuring that the template remains stable and centered in the detection device during conveying. When the plastic steel template 3 is placed on the conveyor roller 11, the roller 11 starts running. As the template passes the guide rods 111, the clamping force of the guide rods ensures it does not shift, thus guaranteeing that the template accurately enters the detection box 1. This ensures that the plastic steel template 3 does not shift during transmission, allowing for precise alignment of reflective markings and improving the accuracy of optical detection. It also prevents the plastic steel template 3 from shaking or shifting on the conveyor roller 11, reducing detection errors caused by inaccurate positioning. The automatic centering and clamping mechanism reduces manual intervention, increases the automation level of the production line, and enables the detection device to operate continuously and stably.

[0063] like Figures 1 to 4 As shown: A method for detecting the surface flatness of PVC-U formwork, applied to the aforementioned novel PVC-U formwork surface flatness detection device, includes the following steps:

[0064] S1. Place the plastic steel template 3 on the conveyor roller 11, start the conveyor roller 11 to drive the plastic steel template 3 to move along the width direction of the detection box 1, so that it passes through the spacing adjustment mechanism and the detection box 1 in sequence;

[0065] S2. The spacing adjustment mechanism expands or contracts along the length of the detection box 1, causing multiple reflective material coating units 21 to automatically adjust their spacing so that they cover the effective detection area of ​​the plastic steel template 3.

[0066] S3, the drive component 12 drives the reflective material coating unit 21 to move toward the surface of the plastic steel template 3 and apply pressure, forming regularly arranged reflective marking points on the surface of the plastic steel template 3;

[0067] S4. After the plastic steel template 3 enters the inspection box 1, the optical inspection component collects and analyzes the reflected light signal of the reflective marking point: if the reflective brightness of a certain marking point exceeds the preset threshold range, it is determined that there is a flatness defect.

[0068] The above embodiments only illustrate one or more implementations of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of protection of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A novel plastic steel formwork surface flatness detection device, comprising a detection box (1) and a conveying roller (11) arranged below the detection box (1), the inside of the detection box (1) is provided with an optical detection assembly, characterized in that, The detection box (1) is provided with a spacing adjusting mechanism which can be unfolded along the length direction of the detection box (1); the spacing adjusting mechanism is provided with a plurality of light-reflecting material coating units (21) which are arranged at equal intervals; the side of the spacing adjusting mechanism is provided with a driving assembly (12) which can drive the light-reflecting material coating units (21) to move to the plastic steel template (3) on the conveying roller (11); through the contact between the light-reflecting material coating units (21) and the plastic steel template (3), the surface of the plastic steel template (3) forms regularly arranged light-reflecting mark points; the optical detection assembly in the detection box (1) detects a plurality of light-reflecting mark points on the plastic steel template (3); if the light brightness emitted by the light-reflecting mark points exceeds or is lower than the threshold value set by the program, the flatness of the plastic steel template (3) does not meet the standard; the spacing adjusting mechanism comprises a fork-shaped frame (22), the fork-shaped frame (22) is provided with a fixed end (221) which is fixedly connected with the center of the detection box (1) and two movable ends (222) which can slide along the length direction of the detection box (1), a plurality of light-reflecting material coating units (21) are arranged on the fork-shaped frame (22), the light-reflecting material coating unit (21) comprises a support frame (211) arranged on the spacing adjusting mechanism, the side of the support frame (211) away from the detection box (1) is provided with a mounting shaft (2111) which extends along the length direction of the detection box (1), the mounting shaft (2111) is sleeved with a transmission frame (212), the transmission frame (212) is provided with a coating head (2121) which can coat the plastic steel template (3), the fork-shaped frame (22) is provided with a guide shaft (213) which extends along the length direction of the detection box (1), the support frames (211) of all the light-reflecting material coating units (21) are sleeved on the guide shaft (213), the two sides of the fixed end (221) are provided with linear drives (2211) which are hingedly connected with the fixed end (221), the other ends of the two linear drives (2211) are respectively hingedly connected with the two movable ends (222).

2. The novel plastic steel formwork surface flatness detection device according to claim 1, characterized in that, The transmission frame (212) is provided with a mounting plate (2122) which can extend along the horizontal direction, and the transmission frame (212) is provided with an elastic member (2124) which is connected with the support frame (211), the driving assembly (12) is provided with a driving frame (121) which can slide along the height direction of the detection box (1), the driving frame (121) is located below the mounting plate (2122), and when the driving frame (121) slides along the height direction of the detection box (1), the mounting plate (2122) can be driven to move.

3. The novel plastic steel formwork surface flatness detection device according to claim 2, characterized in that, The installation plate (2122) is provided with a sliding groove (2123) extending along the length direction thereof, and the driving assembly (12) further comprises a sliding rod (1211) extending along the length direction of the detection box (1), the sliding rod (1211) is installed on the driving frame (121), and the sliding rod (1211) is provided with driving heads (1212) corresponding to the number of the reflective material coating units (21), the driving heads (1212) are slidably arranged on the sliding rod (1211), the bottoms of the driving heads (1212) are slidably arranged in the sliding groove (2123), and the bottoms of the driving heads (1212) are provided with driving rods (12121) which can be popped out below the sliding groove (2123).

4. The novel plastic steel formwork surface flatness detection device according to claim 3, characterized in that, The inner top end of the driving head (1212) is provided with an electromagnet (12122) which can slide along the length direction thereof, the electromagnet (12122) is elastically connected with the driving head (1212), the two driving rods (12121) are rotatably arranged in the driving head (1212), and the middle portions of the driving rods (12121) are provided with connecting rods (12123) which are hinged with the electromagnet (12122).

5. The novel plastic steel formwork surface flatness detection device according to claim 1, characterized in that, The detection box (1) is provided with a sensor (12124) which can measure the length of the plastic steel template (3).

6. The novel plastic steel formwork surface flatness detection device according to claim 1, characterized in that, The conveying roller (11) is provided with two guide rods (111) which can center and clamp the plastic steel template (3).

7. A method for detecting the surface flatness of a plastic steel formwork, applied to the novel plastic steel formwork surface flatness detection device of any one of claims 1-6, characterized in that, The method comprises the following steps: S1, placing the plastic steel template (3) on the conveying roller (11), starting the conveying roller (11) to drive the plastic steel template (3) to move along the width direction of the detection box (1), so that the plastic steel template (3) passes through the distance adjusting mechanism and the detection box (1) in turn; S2, expanding or contracting the distance adjusting mechanism along the length direction of the detection box (1) to drive the plurality of reflective material coating units (21) to automatically adjust the distance, so that the reflective material coating units (21) cover the effective detection area of the plastic steel template (3); S3, the driving assembly (12) drives the reflective material coating units (21) to move to the surface of the plastic steel template (3) and apply pressure, so as to form regularly arranged reflective mark points on the surface of the plastic steel template (3); S4, after the plastic steel template (3) enters the detection box (1), the optical detection assembly collects and analyzes the reflected light signals of the reflective mark points, and if the reflective brightness of a mark point exceeds the preset threshold range, it is determined that there is a flatness defect.

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