Workpiece thickness automatic detection device

Abstract

The application provides a workpiece thickness automatic detection device, which comprises a rack, a detection platform, a feeding conveyor belt and a discharging conveyor belt arranged on the rack; a first detection element and a second detection element are arranged on the upper and lower sides of the detection platform on the rack, the second detection element slides through the lower detection platform and abuts against the lower end surface of the workpiece, and the first detection element abuts against the upper end surface of the workpiece; a lifting blocking plate is arranged above one end of the discharging conveyor belt, an upper feeding sensor is arranged above the outlet end of the feeding conveyor belt on the rack, and a lower discharging sensor is arranged above the inlet end of the discharging conveyor belt on the rack; when the lower discharging sensor does not detect the workpiece, the blocking plate descends to a blocking position; when the upper feeding sensor detects the workpiece and keeps for a certain time, the blocking plate ascends to an initial position. The workpiece thickness automatic detection device can detect the contour size of the product after grinding without transfer, has high detection precision and does not need manual participation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automatic detection, in particular to a workpiece thickness automatic detection device. BACKGROUND

[0002] At present, magnetic steel is generally produced and manufactured by powder metallurgy, and then ground by a grinding device after production. Grinding is the most common and widely used processing method in all mechanical processing. The outer surface or corner position of most workpieces needs to be ground to the desired design shape. In order to ensure that the processed product meets the design requirements, the shape contour size (length, width or thickness) of the processed product needs to be detected to determine whether the workpiece grinding is qualified.

[0003] In the prior art, the most common method for detecting the size of the ground magnetic steel is manual sampling inspection, that is, a certain proportion of the products is sampled for shape contour size detection after the same batch of products is processed, so as to confirm the qualified rate of the products. During detection, the products need to be transferred to the corresponding detection equipment, which not only prolongs the production cycle, but also increases the damage rate of the products due to the frequent transfer process. In addition, the sampling inspection method cannot truly reflect the qualified rate of the whole batch of products, and uncontrollable unqualified products may be mixed in, affecting the authenticity of the inspection. SUMMARY

[0004] To overcome at least one of the above defects in the prior art, the present application provides a workpiece thickness automatic detection device which can detect the shape contour size of the product without transferring the product during the discharging process after the product is ground. The detection precision is high, and the whole process does not require manual intervention, saving labor costs and improving work efficiency.

[0005] The present application provides a workpiece thickness automatic detection device: a rack is provided with a detection platform, an upper conveying belt for conveying the workpiece to the detection platform, and a lower conveying belt for conveying the workpiece on the detection platform to the next station; a first detection element is connected to the upper side of the detection platform, and a second detection element is connected to the lower side of the detection platform; a communication hole is formed in the detection platform, and the probe of the second detection element slides through the communication hole and is located directly below the probe of the first detection element; when the workpiece slides through the detection platform, the probes of the first and second detection elements respectively slide against the upper and lower end faces thereof.

[0006] The unloading conveyor belt is equipped with a vertically movable baffle plate above the detection platform. The frame is also equipped with an unloading sensor and a loading sensor. The loading sensor is located above the end of the loading conveyor belt near the detection platform, and the unloading sensor is located above the end of the unloading conveyor belt near the detection platform and to the left of the baffle plate. During system operation, when the unloading sensor does not detect a workpiece, the baffle plate descends to the blocking position. As workpieces accumulate, when the loading sensor detects a workpiece and holds it for a certain period, the baffle plate ascends to its initial position.

[0007] Compared with the prior art, the automatic workpiece thickness detection device of the present invention has the following advantages:

[0008] The detection device of this invention is a specialized mechanism installed at the discharge end of a grinding machine for real-time detection of the workpiece after grinding. Specifically, it includes a frame installed at the discharge end of the grinding machine, a detection platform mounted on the frame, and a loading conveyor belt and a unloading conveyor belt installed at both ends of the detection platform. Above and below the detection platform, a liftable first detection element and a second detection element are respectively installed. During the translation of the workpiece from the detection platform, the probes of the first and second detection elements abut against the upper and lower surfaces of the workpiece, respectively. The thickness of the workpiece is calculated using the test data from the two detection elements. This vertical arrangement of the detection elements ensures better accuracy of the detection results. The lower surface of the workpiece can serve as a reference plane during the movement. The surface remains relatively stable, and a second detection element is also set on the lower surface of the workpiece, thereby avoiding the impact of fluctuations in the reference surface on the detection results. In addition, the workpiece can be continuously and automatically passed through the detection platform under the action of the corresponding conveyor belt to achieve detection without manual intervention, resulting in high detection efficiency. Furthermore, in the detection device of this invention, a feeding sensor and a discharging sensor are respectively set above the corresponding positions of the feeding conveyor belt and the discharging conveyor belt, and a baffle is set at the inlet end of the discharging conveyor belt. Through the cooperation of the feeding sensor, the discharging sensor, the baffle, and the controller, and under the operation of the corresponding control program, the workpiece is continuously conveyed to the right, and the thickness of the workpiece is automatically detected during the conveying process. The entire detection process does not require manual intervention, is fast, efficient, and has high detection accuracy.

[0009] As an improvement, a support frame is connected to the rear side of the detection platform on the frame. A vertically slidable fixed seat and a drive assembly for driving the fixed seat to slide up and down are connected to the support frame. The first detection element is connected to the fixed seat, and a grating ruler for detecting the vertical movement distance of the fixed seat is connected between the fixed seat and the support frame.

[0010] Furthermore, the drive assembly includes a servo motor, a lead screw, and a lead screw slider. The upper end of the lead screw is connected to the output shaft of the servo motor, the lead screw slider is fitted outside the lead screw, and the fixed base is connected to the lead screw slider.

[0011] In a further improvement, a dovetail-shaped positioning block is protruding from the side wall of the support frame, and a guide groove is provided on the side wall of the lead screw slider to slide and fit with the positioning block.

[0012] In a further improvement, a mounting bracket is connected to the fixed base, and two pressure rollers are connected to the mounting bracket. These rollers are located above the detection platform and are used to elastically abut against the upper surfaces of both ends of the workpiece to be detected. The first detection element is located between the two pressure rollers.

[0013] In a further improvement, two first screws are slidably threaded along the vertical direction on the horizontal fixing plate of the mounting bracket. The lower ends of the two first screws are connected to first connecting plates. Both first connecting plates are slidably connected to the vertical plate of the mounting bracket via linear guide rails. Elastic elements are provided between the top of the two first connecting plates and the horizontal fixing plate. The two pressure rollers are respectively connected to the lower ends of the two first connecting plates.

[0014] In a further improvement, a second screw is slidably threaded through the horizontal fixing plate of the mounting frame along the vertical direction. The lower end of the second screw is connected to a second connecting plate. The second connecting plate is slidably connected to the vertical plate of the mounting frame via a linear guide rail. An elastic element is provided between the top of the second connecting plate and the horizontal fixing plate. The lower end of the second connecting plate is connected to a guide wheel, which is located directly above the discharge end of the feeding conveyor belt.

[0015] In a further improvement, the upper surface of the detection platform is provided with several V-shaped grooves that form a certain angle with the moving direction of the workpiece, so that several toothed scrapers are formed on the upper surface of the detection platform.

[0016] In the improved version, the feeding conveyor belt, the unloading conveyor belt, and the detection platform are located in the same straight direction. Both ends of the detection platform are provided with arc-shaped inner grooves, and the two inner grooves respectively cooperate with the outlet end of the feeding conveyor belt and the inlet end of the unloading conveyor belt.

[0017] On the other hand, the present invention also provides a workpiece processing system, including a grinding machine main unit, a controller, and an automatic detection device with any of the aforementioned structures. The discharge port of the grinding machine main unit is connected to the loading port of the loading conveyor belt via a conveying assembly. The grinding machine main unit includes two opposing grinding discs and an adjustment mechanism for adjusting the distance between the two grinding discs. The first detection element, the second detection element, and the adjustment mechanism are all electrically connected to the controller. The two detection elements are respectively connected to the controller to realize the automatic recording of the workpiece thickness dimension, and can also compare it with the qualified data pre-stored in the controller. When the workpiece dimension is found to be continuously unqualified, the signal is promptly fed back to the grinding machine main unit, and the distance between the two grinding discs is adjusted in time by the grinding disc adjustment mechanism to perform online correction and adjustment of the grinding value of the workpiece, effectively ensuring the workpiece processing accuracy and improving the product qualification rate.

[0018] Other improvements and advantages of the invention will be set forth in the detailed description that follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention may be realized and obtained by means of the structures particularly pointed out in the description and the drawings. Attached Figure Description

[0019] Figure 1 This is a three-dimensional structural diagram of the automatic workpiece thickness detection device of the present invention;

[0020] Figure 2 for Figure 1 Another schematic diagram of the automatic workpiece thickness detection device from a different angle;

[0021] Figure 3 for Figure 1 Enlarged structural diagram at point X in the diagram;

[0022] Figure 4 for Figure 1 Another schematic diagram of the automatic workpiece thickness detection device from a different angle;

[0023] Figure 5 for Figure 4 Enlarged structural diagram at point Y;

[0024] Figure 6 for Figure 1 A partial front view of the automatic workpiece thickness detection device;

[0025] Figure 7 for Figure 1 A partial structural schematic diagram of the automatic workpiece thickness detection device;

[0026] Figure 8 This is a schematic diagram of the workpiece processing system of the present invention.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Frame; 2. Detection platform; 3. Feeding conveyor belt; 4. Discharging conveyor belt; 5. First detection element; 6. Second detection element; 7. Communicating hole; 8. Baffle plate; 9. Feeding sensor; 10. Discharging sensor; 11. Support frame; 12. Fixed base; 13. Grating ruler; 14. Servo motor; 15. Lead screw; 16. Lead screw slider; 17. Positioning block; 18. Mounting frame; 19. Pressure roller; 20. First screw; 21. First connecting plate; 22. Elastic element; 23. Second screw; 24. Second connecting plate; 25. Guide wheel; 26. V-groove; 27. Grinding machine main unit; 28. Conveying assembly; 29. ​​Grinding disc; 30. Adjustment mechanism; 31. Probe; 32. Positioning baffle plate. Detailed Implementation

[0029] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0030] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "fixed" and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0031] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0032] See Figures 1 to 7As shown in the embodiment of this application, an automatic workpiece thickness detection device is disclosed, including a frame 1. The frame 1 is equipped with a feeding conveyor belt 3, a discharging conveyor belt 4, and a detection platform 2. One end of the detection platform 2 is connected to the outlet end of the feeding conveyor belt 3, and the other end is connected to the inlet end of the discharging conveyor belt 4. That is, the workpiece comes out of the grinding equipment and enters the feeding conveyor belt 3, which is automatically conveyed to the detection platform 2 to complete the detection process. Then the workpiece enters the discharging conveyor belt 4 and is automatically conveyed to the next stage. Specifically, a first detection element 5 is connected to the frame 1 above the detection platform 2 and can be raised and lowered. A second detection element 6 is also connected to the frame 1 below the detection platform 2. The detection platform 2 has a connecting hole 7. The probe 31 of the second detection element 6 slides through the connecting hole 7. When the ground workpieces slide one by one from the feeding conveyor belt 3 across the detection platform 2, the probe 31 of the first detection element 5 and the probe 31 of the second detection element 6 slide and abut against the upper and lower end faces of the workpiece, respectively, to realize the automatic detection of the workpiece thickness.

[0033] Furthermore, in this embodiment, a baffle plate 8 that can move up and down is provided above the unloading conveyor belt 4 near the detection platform 2. Preferably, the left end of the baffle plate 8 is just enough to allow a workpiece to stop between it and the inlet end of the unloading conveyor belt 4. The baffle plate 8 is adjusted by a lifting drive cylinder, which is electrically connected to the controller. The frame 1 is also provided with a loading sensor 9 and a unloading sensor 10. The loading sensor 9 is located above the end of the loading conveyor belt 3 near the detection platform 2, and the unloading sensor 10 is located above the end of the unloading conveyor belt 4 near the detection platform 2 and to the left of the baffle plate 8. When the loading sensor 9 detects a workpiece, the baffle plate 8 moves down to the blocking position. When the unloading sensor 10 detects a workpiece, the baffle plate 8 moves up to the initial position.

[0034] The working principle of the above structure is as follows: the distance between the first detection element 5 and the second detection element 6 is adjusted according to the thickness of the workpiece. The feeding conveyor belt 3 runs to convey the workpieces to the detection platform 2 one by one at a certain interval. Since the detection platform 2 is stationary, after the workpiece moves to the detection platform 2, it needs to be pushed by the workpiece behind it to continue moving to the right until it moves to the unloading conveyor belt 4.

[0035] The testing process is as follows:

[0036] When the detection device starts running, the unloading sensor 10 does not detect a workpiece signal. The controller controls the baffle plate 8 to move downwards to the baffle position. As more and more workpieces are conveyed by the loading conveyor belt 3, the workpieces on the detection platform 2 line up in sequence and slowly move towards the unloading conveyor belt 4. When the rightmost workpiece is about to contact the baffle plate 8, the unloading sensor 10 detects a workpiece signal. As the workpiece continues to be pushed to the right until the rightmost workpiece touches the baffle plate 8, the loading conveyor belt 3 continues to drive the workpiece to the right. When the loading sensor 9 detects a workpiece and remains stationary for a certain period of time, the controller controls the baffle plate 8 to move upwards. After the baffle plate 8 loses its blocking effect, the rightmost workpiece will be carried away by the unloading conveyor belt 4 and moved to the right. At the same time, the loading conveyor belt 3 feeds again and moves to the right by the first set distance before stopping and delaying, waiting for the system to read the first detection point data of the workpiece at the detection position. After completing the first data recording, the loading conveyor belt 3 feeds again and moves to the right by the second set distance before stopping and delaying, waiting for the system to read the second detection point data of the workpiece at the detection position. The workpiece at the detection position has completed two detection points. After data recording, the system calculates the average value as the thickness of the workpiece. After the feeding conveyor belt 3 performs two feeding advances, there will be a certain time delay. After the corresponding delay, the unloading sensor 10 continues to detect the signal. If the unloading sensor 10 can detect the workpiece signal, it means that more than half of the workpiece length is on the unloading conveyor belt 4, and the workpiece will be automatically carried away. If the unloading sensor 10 does not detect the workpiece signal, the baffle plate 8 moves down again. After the feeding conveyor belt 3 completes the delay, it pushes the workpiece to the right again until the rightmost workpiece touches the baffle plate 8. When the feeding sensor 3 detects the workpiece again and keeps it stationary for a certain period of time, the controller controls the baffle plate 8 to move upward. After the baffle plate 8 loses its blocking effect, the rightmost workpiece will be carried away by the unloading conveyor belt 4 and moved to the right. Then the feeding conveyor belt 3 performs two feedings of the designed distance to realize the reading of data from the two detection points of the next workpiece. By continuously repeating this process, continuous automatic detection of the workpiece can be achieved, and the data is more accurate because the workpiece is detected through two points.

[0037] It is important to note that during this process, the unloading sensor 10 will only start the next detection cycle after the system has completed one detection cycle of the workpiece (one workpiece has been detected). That is, after the rightmost workpiece is taken away by the unloading conveyor belt 4, the unloading sensor 10 will not immediately start the signal detection for the next cycle. Instead, it will wait until the loading conveyor belt 3 has completed two set distance transmissions before starting the next detection cycle.

[0038] In addition, in the above-mentioned detection device, since the two detection elements are generally located in the middle of the detection platform 2, the first few workpieces are not actually detected when the system starts running, so the first few workpieces need to be removed; when the rightmost workpiece comes into contact with the baffle plate 8, the workpieces starting from the workpiece located between the two detection elements have been detected and need to be conveyed to the next process.

[0039] In the above-mentioned testing process, at each testing stage, the two distances by which the feeding conveyor belt 3 moves the workpiece to the right can be set according to the actual length of the product. In this embodiment, for example, if the workpiece length is 30mm, then the first set distance is generally about 5mm, that is, the first testing point is 5mm away from the front end of the workpiece, and the second set distance is 20mm, that is, the second testing point is 25mm away from the front end of the workpiece.

[0040] In other embodiments, if the workpiece is short, the system can be set to only one transmission distance, meaning the workpiece only reads data from one monitoring point. If the workpiece is long, three transmission distances can be set, meaning each product reads data from three monitoring points.

[0041] More specifically, the above inspection process can achieve continuous inspection of workpieces, that is, each workpiece is inspected; or the transmission distance between two inspection processes can be lengthened, that is, after the current workpiece is inspected, the next inspection point directly jumps to the second subsequent workpiece, skipping one workpiece in between, which is equivalent to inspecting every two workpieces.

[0042] In the above structure, the feeding conveyor belt 3 is preferably a step feeding mechanism, that is, the movement of each feeding movement can be adjusted and controlled by a specific encoder to be suitable for the conveying of workpieces of different conventional specifications, and to ensure that the thickness data of each workpiece can be accurately detected.

[0043] Furthermore, in this embodiment, the first detection element 5 and the second detection element 6 are both existing contact displacement sensors, specifically capacitive micrometers. In practical applications, the two detection elements are connected to the controller to automatically record the workpiece thickness. They can also be compared with pre-stored qualified data in the controller. When continuous non-compliance in workpiece dimensions is detected, a signal is promptly fed back to the grinding equipment, and the distance between the grinding discs is adjusted in a timely manner, achieving online linkage adjustment.

[0044] In the above structure, during the translation of the workpiece from the detection platform 2, the probes 31 of the first detection element 5 and the second detection element 6 abut against the upper and lower surfaces of the workpiece, respectively. The thickness of the workpiece is calculated by the test data of the two detection elements. This vertical setting of the detection elements can better ensure the accuracy of the detection results. The lower surface of the workpiece can be used as a reference surface. The reference surface remains basically stable during the movement. The second detection element 6 is also set on the lower surface of the workpiece, so as to avoid the impact of fluctuations in the reference surface on the detection results.

[0045] Furthermore, in this embodiment, a support frame 11 is connected to the rear side of the detection platform 2 on the frame 1. A vertically slidable fixed seat 12 and a driving assembly for driving the fixed seat 12 to slide up and down are connected to the support frame 11. The first detection element 5 is connected to the fixed seat 12, and a grating ruler 13 for detecting the vertical movement distance of the fixed seat 12 is connected between the fixed seat 12 and the support frame 11. In this structure, the grating ruler 13 makes the vertical adjustment distance of the fixed seat 12 more precise and controllable.

[0046] Preferred options are listed in the appendix. Figure 2 The drive components in the above structure include a servo motor 14, a lead screw 15, and a lead screw slider 16. The servo motor 14 is vertically mounted on the top of the support frame 11, and the lead screw 15 is also vertically mounted, with its upper end connected to the output shaft of the servo motor 14. The lead screw slider 16 is fitted outside the lead screw 15, and the fixed base 12 is connected to the lead screw slider 16. The operation of the servo motor 14 drives the lead screw 15 to rotate, thereby driving the lead screw slider 16 to rise and fall along the axis of the lead screw 15, which in turn drives the fixed base 12 to rise and fall vertically, ultimately realizing the height adjustment of the first detection element 5. The adjustment distance is monitored in real time by the grating ruler 13. With this setup, when the specifications of the workpiece to be inspected change, the workpiece thickness dimension can be input through the corresponding control interface, and the servo motor 14 can automatically run to realize the height adjustment of the first detection element 5.

[0047] In addition, to ensure the smoothness of the lifting and lowering of the fixed seat 12, a positioning block 17 is connected on the frame 1, and the lead screw slider 16 is slidably engaged in the guide groove; preferably, the positioning block 17 is a dovetail-shaped structure, and the guide groove is also a dovetail groove shape. The dovetail-shaped sliding engagement structure can ensure the smooth vertical sliding while also limiting the horizontal direction, thus better ensuring the smoothness of the vertical movement of the fixed seat 12.

[0048] For more details, please see the appendix. Figure 2 , 3In this embodiment, a mounting frame 18 is connected to the front side of the fixed base 12. Two pressure rollers 19 are connected to the mounting frame 18, located above the detection platform 2 and used to elastically abut against the upper surfaces of both ends of the workpiece to be detected. The first detection element 5 is located between the two pressure rollers 19. The pressure rollers ensure that the workpiece can smoothly pass between the two detection elements, improving detection accuracy. Preferably, two first screws 20 are slidably threaded vertically through the horizontal fixed plate of the mounting frame 18. The lower ends of the two first screws 20 are connected to first connecting plates 21. Both first connecting plates 21 are slidably connected to the vertical plate of the mounting frame 18 via linear guides. Elastic elements 22 are provided between the top of each of the two first connecting plates 21 and the horizontal fixed plate. The two pressure rollers 19 are respectively connected to the lower ends of the two first connecting plates 21. In this structure, the two pressure rollers can elastically oscillate vertically, ensuring that they always adhere to and press against the upper surface of the workpiece. Furthermore, the elastic element 22 is preferably a cylindrical spring. Two cylindrical springs are fitted around the two first screws 20, and their upper and lower ends respectively abut against the lower end face of the horizontal fixing plate and the upper end face of the first connecting plate 21.

[0049] On the other hand, see Appendix. Figure 3 In this embodiment, a second screw 23 is slidably mounted vertically on the horizontal fixed plate of the mounting frame 18. The lower end of the second screw 23 is connected to a second connecting plate 24, which is slidably connected to the vertical plate of the mounting frame 18 via a linear guide rail. An elastic element 22 is provided between the top of the second connecting plate 24 and the horizontal fixed plate. The lower end of the second connecting plate 24 is connected to a guide wheel 25, which is located directly above the discharge end of the feeding conveyor belt 3. The guide wheel 25 has a rightward pushing force, enabling the workpieces on the feeding conveyor belt 3 to be more stably conveyed to the detection platform 2, thereby pushing the workpieces on the detection platform 2 to move to the right as a whole, ensuring accurate thickness detection for each workpiece.

[0050] Additionally, in the above structure, see Appendix Figure 7 Several drainage grooves are provided on the upper surface of the inspection platform 2 to achieve the effect of draining and drying the workpiece. Preferably, the drainage grooves are V-shaped grooves 26, which form a certain angle with the moving direction of the workpiece, so that several toothed scrapers are formed on the upper surface of the inspection platform 2. Therefore, when the workpiece passes horizontally across the inspection platform 2 from left to right, in addition to collecting accumulated water, particulate impurities can also be scraped off its lower surface to prevent particulate matter from affecting the inspection results. Furthermore, the V-shaped grooves 26 can be designed with one side higher than the other to facilitate timely drainage of accumulated water.

[0051] In this embodiment, see Appendix Figure 3Positioning baffles 32 are provided on both sides of the frame 1 along the width direction of the feeding conveyor belt 3 and the unloading conveyor belt 4. Each positioning baffle 32 includes a right-angled vertical baffle and a horizontal connecting plate. The vertical baffles of two opposing positioning baffles 32 form a positioning channel for the workpiece. Each positioning baffle 32 has a waist-shaped hole extending along the width direction of the positioning channel on its horizontal connecting plate. Connecting screws (not shown in the figure) for connecting each positioning baffle 32 to the frame 1 are inserted in the waist-shaped hole. The position of the horizontal connecting plate can be adjusted by customizing the waist-shaped hole, thereby adjusting the width of the positioning channel to accommodate workpieces of different specifications, thus achieving high versatility.

[0052] Specifically, in this embodiment, the feeding conveyor belt 3, the unloading conveyor belt 4, and the detection platform 2 are located in the same straight direction. Both ends of the detection platform 2 are provided with arc-shaped inner grooves, and the two inner grooves are respectively matched with the outlet end of the feeding conveyor belt 3 and the inlet end of the unloading conveyor belt 4, so as to ensure that the two ends of the detection platform 2 are better connected with the feeding conveyor belt 3 and the unloading conveyor belt 4. Furthermore, the upper surface of the detection platform 2 is flush with the upper surface of the feeding conveyor belt 3 and the unloading conveyor belt 4, thereby ensuring the stability of the workpiece during the movement process.

[0053] On the other hand, this application also discloses a workpiece processing system, including a grinding machine main unit 27, a controller, and an automatic detection device. The discharge port of the grinding machine main unit 27 is connected to the loading conveyor belt 3 via a conveying component 28. The grinding machine main unit 27 includes two opposing grinding discs 29 and an adjustment mechanism 30 for adjusting the distance between the two grinding discs 29. The first detection element 5, the second detection element 6, and the adjustment mechanism 30 are all electrically connected to the controller. That is, the workpiece from the discharge port of the grinding machine main unit 27 enters the loading conveyor belt 3 of the detection device via the corresponding conveying component 28 and enters the detection platform 2 for detection. The two detection elements are respectively electrically connected to the controller to realize the automatic recording of the workpiece thickness. It can also be compared with the qualified data pre-stored in the controller. When the workpiece size is found to be continuously unqualified, the signal is fed back to the grinding machine main unit 27 in time. The distance between the two grinding discs 29 is adjusted in time by the adjustment mechanism 30 to perform online correction and adjustment of the grinding value of the workpiece, effectively ensuring the accuracy requirements of the workpiece grinding process, and realizing the automatic detection of the grinding thickness. The detection results are linked with the grinding machine main unit 27 in real time.

[0054] In the description of this application, the reference to the term "this embodiment" refers to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0055] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. An automatic workpiece thickness detection device, comprising a frame (1), characterized in that: The frame (1) is provided with a detection platform (2), a feeding conveyor belt (3) for conveying workpieces to the detection platform (2), and a discharging conveyor belt (4) for conveying workpieces on the detection platform (2) to the next station; the frame (1) is provided with a liftable first detection element (5) above the detection platform (2), and the frame (1) is also provided with a second detection element (6) below the detection platform (2); the detection platform (2) is provided with a connecting hole (7), and the probe (31) of the second detection element (6) slides through the connecting hole (7) and is located directly below the probe (31) of the first detection element (5); when the workpiece slides over the detection platform (2), the probe (31) of the first detection element (5) and the probe (31) of the second detection element (6) slide against its upper and lower end faces respectively; The unloading conveyor belt (4) is provided with a baffle plate (8) that can move up and down near the detection platform (2). The frame (1) is also provided with a loading sensor (9) and a unloading sensor (10). The loading sensor (9) is located above the end of the loading conveyor belt (3) near the detection platform (2). The unloading sensor (10) is located above the end of the unloading conveyor belt (4) near the detection platform (2) and to the left of the baffle plate (8). When the system is running, when the unloading sensor (10) does not detect a workpiece, the baffle plate (8) moves down to the baffle position. As the workpieces accumulate, when the loading sensor (9) detects a workpiece and holds it for a certain period of time, the baffle plate (8) moves up to the initial position. A support frame (11) is connected to the rear side of the detection platform (2) on the frame (1). A vertically slidable fixed seat (12) is connected to the support frame (11). A mounting frame (18) is connected to the fixed seat (12). Two pressure rollers (19) located above the detection platform (2) and elastically abutting against the upper surfaces of both ends of the workpiece to be detected are connected to the mounting frame (18). The first detection element (5) is located between the two pressure rollers (19). Two first screws (20) are slidably threaded through the horizontal fixed plate of 18) along the vertical direction. The lower ends of the two first screws (20) are connected to the first connecting plate (21). The two first connecting plates (21) are slidably connected to the vertical plate of the mounting frame (18) through linear guide rails. Elastic elements (22) are provided between the top of the two first connecting plates (21) and the horizontal fixed plate. The two pressing rollers (19) are respectively connected to the lower ends of the two first connecting plates (21).

2. The automatic workpiece thickness detection device according to claim 1, characterized in that: The support frame (11) is also connected to a drive assembly for driving the fixed seat (12) to slide up and down. The first detection element (5) is connected to the fixed seat (12), and a grating ruler (13) for detecting the vertical movement distance of the fixed seat (12) is connected between the fixed seat (12) and the support frame (11).

3. The automatic workpiece thickness detection device according to claim 2, characterized in that: The drive assembly includes a servo motor (14), a lead screw (15), and a lead screw slider (16). The upper end of the lead screw (15) is connected to the output shaft of the servo motor (14). The lead screw slider (16) is fitted outside the lead screw (15), and the fixed seat (12) is connected to the lead screw slider (16).

4. The automatic workpiece thickness detection device according to claim 3, characterized in that: The support frame (11) has a dovetail-shaped positioning block (17) protruding outward on its side wall, and the lead screw slider (16) has a guide groove on its side wall that is slidably fitted with the positioning block (17).

5. The automatic workpiece thickness detection device according to claim 1, characterized in that: A second screw (23) is slidably threaded through the horizontal fixed plate of the mounting frame (18) along the vertical direction. The lower end of the second screw (23) is connected to a second connecting plate (24). The second connecting plate (24) is slidably connected to the vertical plate of the mounting frame (18) through a linear guide rail. An elastic element (22) is provided between the top of the second connecting plate (24) and the horizontal fixed plate. The lower end of the second connecting plate (24) is connected to a guide wheel (25). The guide wheel (25) is located directly above the discharge end of the feeding conveyor belt (3).

6. The automatic workpiece thickness detection device according to claim 1, characterized in that: The upper surface of the detection platform (2) is provided with several V-shaped grooves (26) that form a certain angle with the moving direction of the workpiece, so that several toothed scrapers are formed on the upper surface of the detection platform (2).

7. The automatic workpiece thickness detection device according to claim 1, characterized in that: The feeding conveyor belt (3), the unloading conveyor belt (4) and the detection platform (2) are located in the same straight direction. Both ends of the detection platform (2) are provided with arc-shaped inner grooves, and the two inner grooves are respectively matched with the outlet end of the feeding conveyor belt (3) and the inlet end of the unloading conveyor belt (4).

8. A workpiece processing system, characterized in that: The device includes a grinding machine main unit (27), a controller, and an automatic detection device as described in any one of claims 1 to 7. The discharge port of the grinding machine main unit (27) is connected to the feeding conveyor belt (3) via a conveying assembly (28). The grinding machine main unit (27) includes two grinding discs arranged opposite each other and an adjustment mechanism (30) for adjusting the distance between the two grinding discs. The first detection element (5), the second detection element (6), and the adjustment mechanism (30) are all electrically connected to the controller.

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