Positioning adjustment device on conveyor belt

Abstract

This utility model relates to the technical field of sheet metal conveying equipment, specifically a positioning and adjustment device on a conveyor belt. It includes a conveyor belt body for carrying stamped aluminum alloy shell sheets. A positioning and holding mechanism is located at a predetermined station on the conveyor belt body to detect the arrival status of the aluminum alloy shell sheet and hold it in a preset holding area. A posture adjustment mechanism is located in the corresponding preset holding area and mounted on the conveyor belt body to perform X-axis positioning, Y-axis calibration, and posture correction on the held aluminum alloy shell sheet. In this conveyor belt positioning and adjustment device, the posture adjustment mechanism, through the coordinated action of the lateral positioning component (X-axis) and the longitudinal calibration component (Y-axis), combined with contour recognition by a visual sensor or edge detection by a displacement sensor, forms a closed-loop control system, enabling precise control of positioning deviation and effective correction of posture tilt for the aluminum alloy sheet.

Description

Technical Field

[0001] This utility model relates to the technical field of sheet metal conveying equipment, and more specifically, to a positioning and adjustment device on a conveyor belt. Background Technology

[0002] In the manufacturing process of aluminum alloy casings for electronic products (such as tablet computer back covers), aluminum alloy sheets are gradually shaped through multiple processes including stamping and CNC machining. The transfer and stacking of stamped sheets is a crucial step in ensuring the accuracy and efficiency of subsequent processing. These aluminum alloy casing sheets are typically 7-9mm thick, with dimensions adapted to tablet specifications. Some sheets form boss structures after stamping for camera holes. The shape accuracy and posture consistency of these bosses directly affect the clamping accuracy of subsequent CNC machining fixtures, batch production yield, and the effectiveness of subsequent cleaning and sandblasting processes.

[0003] Currently, stamped aluminum alloy sheets are mostly transported directly via ordinary conveyor belts, relying on manual stacking or robotic arms for handling. However, due to the structural characteristics of the sheets (such as protruding bosses causing center of gravity shift), vibrations from the conveyor belt, and initial positional deviations during loading, sheets are prone to X-axis offset, Y-axis misalignment, and tilting on the conveyor belt. These deviations lead to a series of production challenges: First, manual stacking is labor-intensive and inefficient, and manual operation can easily cause scratches on the sheet surface and damage to bosses, affecting product appearance quality. Second, existing conveyor belts lack effective positioning and posture correction mechanisms, resulting in poor sheet posture consistency, low success rate of subsequent robotic arm handling, and the risk of sheet detachment and disordered stacking during handling, thus affecting the standardization of pallet transport. Third, if sheet positioning deviations are not corrected in time, they can cause misalignment of the fixture clamping reference during subsequent CNC machining, increasing machining errors in critical dimensions such as hole diameter and slot depth, and raising the risk of batch defects. Utility Model Content

[0004] The purpose of this utility model is to provide a positioning and adjustment device on a conveyor belt to solve the problems mentioned in the background art, such as the X-axis offset, Y-axis misalignment and tilting of the plate on the conveyor belt due to the structural characteristics of the plate itself (such as the center of gravity shift caused by the protrusion of the boss), the vibration of the conveyor belt, and the initial position deviation when the plate is loaded.

[0005] To achieve the above objectives, this utility model provides a positioning adjustment device for a conveyor belt, comprising: The conveyor belt body is used to support the stamped aluminum alloy outer shell plate; A positioning and retention mechanism is provided at a set station of the conveyor belt body to detect the position status of the aluminum alloy shell plate and retain it in a preset retention area. An attitude adjustment mechanism is provided and mounted on the conveyor belt body in the corresponding preset retention area, and is used to position the aluminum alloy shell plate in the X-axis direction, calibrate it in the Y-axis direction, and correct its attitude. The control unit is electrically connected to the positioning and holding mechanism and the attitude adjustment mechanism. It is used to receive the positioning and holding mechanism's arrival signal, control the positioning and holding mechanism to lock the aluminum alloy shell plate, synchronously drive the attitude adjustment mechanism to perform positioning calibration, and control the positioning and holding mechanism to unlock after the attitude is qualified, so that the plate can be adapted to the subsequent gripping and stacking of the robot arm.

[0006] This setup achieves integrated control of sheet metal conveying, positioning, and correction through a collaborative architecture of conveyor belt body, positioning and holding mechanism, posture adjustment mechanism, and control unit: The conveyor belt body carries the stamped 7-9mm thick aluminum alloy sheet metal, completing the basic conveying; the positioning and holding mechanism detects whether the sheet metal is in place at the set station, and if it is, it holds it in the preset area to prevent the sheet metal from moving continuously with the conveyor belt; the posture adjustment mechanism performs X-axis positioning (lateral position calibration), Y-axis calibration (longitudinal position calibration), and overall posture correction (such as tilt adjustment) for the held sheet metal; the control unit, as the core hub, receives the positioning and holding mechanism's arrival signal, first controls it to lock the sheet metal, and then synchronously drives the posture adjustment mechanism to perform the action. After the sheet metal's posture meets the standard, it is unlocked, ensuring that the sheet metal enters the subsequent robotic arm gripping and stacking stage in a regular posture.

[0007] Preferably, the positioning and holding mechanism includes a positioning detection component, a blocking execution component, and a driving component. The positioning detection component is a photoelectric sensor used to collect the positioning signal of the plate. Two driving components are symmetrically arranged on both sides or above the conveyor belt body. The blocking execution component is connected between the driving ends of the two driving components. The blocking execution component is located above the conveyor belt body. The blocking execution component includes a liftable blocking block. The driving component is a cylinder or an electric push rod. The driving component is drivenly connected to the blocking block. The control unit controls the driving component to drive the blocking block to descend onto the conveyor belt body according to the positioning signal, thereby holding the plate in the preset holding area.

[0008] This positioning and holding mechanism achieves precise plate holding through a detection-execution-drive linkage logic: the arrival detection component (symmetrically arranged photoelectric sensors) collects the plate signals on both sides / above of the conveyor belt in real time to determine whether the plate has reached the preset position; when the plate is detected to be in position, the signal is transmitted to the control unit, which drives the drive component (cylinder / electric push rod) to move the blocking execution component (liftable blocking block) down to the surface of the conveyor belt; the blocking block prevents the plate from continuing to move with the conveyor belt, keeping it stably held in the preset area, providing a fixed operating space for subsequent posture adjustment.

[0009] Preferably, the blocking block has two symmetrically arranged arc-shaped guide plates on one side, the inner arc surface of the arc-shaped guide plates faces the middle of the conveyor belt body, and the arc surface of the arc-shaped guide plates that contacts the plate is provided with a silicone protective layer.

[0010] This design optimizes the contact between the blocking block and the plate: the arc-shaped guide plate on the top of one side of the blocking block faces the center of the conveyor belt. When the plate moves to the blocking block with the conveyor belt, the arc-shaped surface can guide the plate to shift towards the center of the conveyor belt, avoiding jamming or shifting of the plate edge; the arc-shaped guide plate has a silicone protective layer on the arc surface that contacts the plate, which uses the flexible properties of silicone to reduce the impact of hard contact between the plate and the guide plate.

[0011] Preferably, the attitude adjustment mechanism includes a lateral positioning component and a longitudinal calibration component. The two lateral positioning components are symmetrically arranged on both sides of the preset dwell area along the X-axis. The lateral positioning component includes a movable lateral push plate and a lateral drive cylinder. The two lateral drive cylinders drive the two lateral push plates to move towards each other / away from each other to achieve lateral centering of the plate. The longitudinal calibration component is located at the front end of the preset dwell area along the Y-axis and includes a longitudinal push plate and a longitudinal drive cylinder. The longitudinal push plate can extend and retract along the Y-axis to push the plate against the preset reference surface to complete longitudinal positioning.

[0012] This setup achieves panel posture correction through a two-way adjustment logic of lateral positioning and longitudinal calibration: Lateral positioning component (two lateral push plates symmetrical along the X-axis + two lateral drive cylinders): When the two cylinders drive the two push plates to move towards each other, they apply a uniform thrust from both sides of the panel, pushing it to the lateral center position of the conveyor belt, achieving centered positioning in the X-axis direction; when the push plates move away from each other, they leave space for subsequent panels; Longitudinal calibration component (longitudinal push plates set along the Y-axis + longitudinal drive cylinders): The cylinders drive the longitudinal push plates to extend and retract, pushing the edge of the panel against a preset reference surface (such as the longitudinal positioning edge of the conveyor belt), ensuring that the panel is uniformly positioned in the Y-axis direction.

[0013] Preferably, the side of the transverse push plate and the longitudinal push plate that contacts the plate is provided with a flexible buffer layer, which is made of rubber or PU material and has a thickness of 0.5-2mm.

[0014] This feature involves setting a 0.5-2mm thick flexible buffer layer of rubber or PU material on the side where the horizontal and vertical push plates contact the workpiece. The buffer layer utilizes the elastic properties of rubber / PU to absorb some of the impact force when the push plates push the workpiece, avoiding hard contact between the push plates and the workpiece. The thickness design of the buffer layer balances the buffering effect and positioning accuracy, ensuring that it is neither too thick and insufficient in pushing force nor too thin and loses its buffering effect.

[0015] Preferably, the attitude adjustment mechanism further includes an attitude detection unit, which is a visual sensor or multiple sets of displacement sensors. The visual sensor is disposed above the preset dwell area and is used to acquire the outline image of the board and identify attitude deviations. The displacement sensors are distributed along the X-axis and Y-axis directions and are used to detect the position offset of the board edge. The control unit adjusts the stroke of the lateral positioning component and the longitudinal calibration component according to the attitude deviation data.

[0016] This setting improves attitude adjustment accuracy through a closed-loop control system of detection-feedback-adjustment. If a vision sensor is used: it is installed above the preset dwell area to acquire the contour image of the board in real time, and analyzes the posture deviation of the board from the preset benchmark (such as X-axis offset, Y-axis misalignment, and tilt angle) through image recognition algorithms; if a displacement sensor is used: it is distributed along the X and Y axes to directly detect the distance between the edge of the board and the sensor and calculate the position offset; the sensor transmits the deviation data to the control unit, and the control unit dynamically adjusts the stroke of the horizontal and vertical push plates according to the data (if the offset is large, the push plate movement distance is increased) to ensure that the posture of the board meets the standard after adjustment.

[0017] Preferably, the conveying surface of the conveyor belt body is provided with anti-slip protrusions, which are evenly distributed along the conveying direction, with a protrusion height of 0.3-0.5mm, and the protrusion material is wear-resistant silicone.

[0018] This feature is installed on the conveyor surface of the conveyor belt body, with wear-resistant silicone anti-slip bumps evenly distributed along the conveying direction and 0.3-0.5mm high. The bumps increase the friction between the conveyor belt surface and the bottom surface of the plate, reducing the relative displacement of the plate caused by conveyor belt vibration and start / stop impact during the conveying process. The silicone material has both wear resistance and flexibility, which not only prevents the bumps from scratching the bottom surface of the plate, but also extends the service life of the conveyor belt.

[0019] Preferably, the positioning and holding mechanism further includes two guide components, which are vertically arranged guide columns. The blocking block is slidably sleeved on the two guide columns, and the output end of the driving component is fixedly connected to the end of the blocking block to realize the smooth lifting and lowering of the blocking block.

[0020] This feature adds a vertically positioned guide post to the positioning and holding mechanism, with the blocking block slidably fitted onto the guide post. When the driving component (cylinder / electric actuator) drives the blocking block to rise and fall, the guide post restricts the direction of movement of the blocking block, preventing it from swaying or tilting due to uneven force. The sliding fit between the guide post and the blocking block ensures that the blocking block rises and falls smoothly and vertically, always maintaining vertical contact with the surface of the conveyor belt.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows: In this conveyor belt positioning and adjustment device, the attitude adjustment mechanism, through the coordinated action of the lateral positioning component (X-axis) and the longitudinal calibration component (Y-axis), combined with the contour recognition of the vision sensor or the edge detection of the displacement sensor, forms a closed-loop control system. This system can accurately control the positioning deviation and effectively correct the attitude tilt of 7-9mm thick aluminum alloy plates. This level of accuracy effectively solves the problem of CNC clamping datum misalignment caused by plate offset in traditional conveying, significantly reduces machining errors in key dimensions such as hole diameter and slot depth, and significantly reduces the risk of batch defects and the cost of rework in first-piece quality inspection.

[0022] The photoelectric sensor of the positioning and holding mechanism is linked with the blocking block to achieve precise holding of the sheet metal after it is in place. The control unit synchronously drives the attitude adjustment and unlocking conveyor, forming a fully automated process of detection-holding-correction-release, without human intervention. Compared with traditional manual stacking, the success rate of the robotic arm gripping is greatly improved, the number of sheets processed per unit time on a single production line is significantly increased, and the efficiency fluctuations caused by manual operation are avoided, adapting to the rhythm of the automated production line of stamping-conveying-gripping-stacking.

[0023] The guide column assembly of the positioning and holding mechanism ensures smooth lifting and lowering of the blocking block, avoiding damage to the plate and equipment from impact loads. The attitude adjustment mechanism can dynamically adjust the push plate stroke through sensor data to adapt to flat back shell plates of different lengths and widths. The overall structure of the device is designed for the weight and boss structure of 7-9mm thick aluminum alloy plates, ensuring positioning accuracy while possessing strong adaptability to working conditions. It can meet the needs of large-scale production, and the maintenance cost is significantly reduced compared to existing equipment. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2This is a schematic diagram of the positioning and retention mechanism in this utility model; Figure 3 This is a schematic diagram of the posture adjustment mechanism in this utility model; The meanings of the labels in the diagram are as follows: 1. Conveyor belt body; 11. Anti-slip protrusions; 2. Positioning and holding mechanism; 21. Position detection component; 22. Blocking execution component; 23. Drive component; 24. Arc-shaped guide plate; 25. Silicone protective layer; 26. Guide component; 3. Attitude adjustment mechanism; 31. Lateral positioning component; 32. Longitudinal calibration component; 33. Flexible buffer layer; 34. Attitude detection unit; 341. Vision sensor; 342. Displacement sensor; 4. Control unit. Detailed Implementation

[0025] 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.

[0026] This utility model provides a positioning and adjustment device for a conveyor belt, such as... Figures 1-3 As shown, the system includes a conveyor belt body 1, a positioning and holding mechanism 2, an attitude adjustment mechanism 3, and a control unit 4. The conveyor belt body 1 carries the stamped aluminum alloy shell plate, which is a plate-shaped structure with a thickness of 7-9mm. The positioning and holding mechanism 2 is set at a designated station on the conveyor belt body 1 to detect the position of the aluminum alloy shell plate and hold it in a preset holding area. The attitude adjustment mechanism 3 is set in the corresponding preset holding area and assembled on the conveyor belt body 1 to perform X-axis positioning, Y-axis calibration, and attitude correction on the held aluminum alloy shell plate. The control unit 4 is electrically connected to both the positioning and holding mechanism 2 and the attitude adjustment mechanism 3. It receives the position signal from the positioning and holding mechanism 2, controls the positioning and holding mechanism 2 to lock the aluminum alloy shell plate, synchronously drives the attitude adjustment mechanism 3 to perform positioning calibration, and controls the positioning and holding mechanism 2 to unlock after the attitude is met, so that the plate can be adapted for subsequent gripping and stacking by the robotic arm.

[0027] In use, the integrated control of sheet metal conveying, positioning, and correction is achieved through the collaborative architecture of conveyor belt body 1, positioning and holding mechanism 2, posture adjustment mechanism 3, and control unit 4: Conveyor belt body 1 carries 7-9mm thick aluminum alloy sheets after stamping, completing the basic conveying; positioning and holding mechanism 2 detects whether the sheet metal is in place at the set workstation, and if it is in place, it holds it in the preset area to prevent the sheet metal from moving continuously with conveyor belt body 1; posture adjustment mechanism 3 performs X-axis positioning (lateral position calibration), Y-axis calibration (longitudinal position calibration), and overall posture correction (such as tilt adjustment) for the held sheet metal; control unit 4, as the core hub, receives the arrival signal from positioning and holding mechanism 2, first controls it to lock the sheet metal, and then synchronously drives posture adjustment mechanism 3 to perform actions. After the sheet metal posture meets the standard, it controls positioning and holding mechanism 2 to unlock, ensuring that the sheet metal enters the subsequent robotic arm gripping and stacking stage in a regular posture.

[0028] It solves the pain points of traditional conveyor belts lacking positioning and correction: avoiding positional deviations and posture tilts caused by vibration and center of gravity shifts (such as those caused by camera protrusions) during sheet material transport, providing a unified benchmark for subsequent CNC machining, quality inspection and other processes; achieving automated connection of the conveyor belt body 1 conveying-positioning and holding mechanism 2 positioning-posture adjustment mechanism 3 correction-control unit 4 release, without manual intervention, improving production line continuity, adapting to the automated process of stamping-clamping-stacking, and stacking, and reducing reliance on manual labor.

[0029] In this embodiment, the positioning and holding mechanism 2 includes a positioning detection component 21, a blocking execution component 22, and a driving component 23. The positioning detection component 21 is a photoelectric sensor used to collect the positioning signal of the plate. The two driving components 23 are symmetrically arranged on both sides or above the conveyor belt body 1. The driving ends of the two driving components 23 are connected to the blocking execution component 22. The blocking execution component 22 is located above the conveyor belt body 1. The blocking execution component 22 includes a liftable blocking block. The driving component 23 is a cylinder or an electric push rod. The driving component 23 is drivenly connected to the blocking block. The control unit 4 controls the driving component 23 to drive the blocking block to descend onto the conveyor belt body 1 according to the positioning signal, so as to hold the plate in the preset holding area.

[0030] In use, the positioning and holding mechanism 2 achieves precise holding of the board through a detection-execution-drive linkage logic: two positioning detection components 21 (symmetrically arranged photoelectric sensors) collect the board signals on both sides / above of the conveyor belt body 1 in real time to determine whether the board has reached the preset position; when the board is detected to be in position, the signal is transmitted to the control unit 4, and the control unit 4 drives the drive component 23 (cylinder / electric push rod) to drive the blocking execution component 22 (liftable blocking block) to descend to the surface of the conveyor belt body 1; the blocking block of the blocking execution component 22 prevents the board from continuing to move with the conveyor belt body 1, and stably holds it in the preset area, providing a fixed operating space for the subsequent posture adjustment mechanism 3.

[0031] To address the issues of traditional manual judgment of positioning or lack of retention structure: the symmetrical arrangement of the two positioning detection components 21 ensures no blind spots in detection, avoids missed detection or false retention of the plate due to offset, and improves the accuracy of positioning judgment; the blocking execution component 22 driven by the drive component 23 (cylinder / electric push rod) responds quickly and can be adapted to the conveyor belt body 1 with different conveying speeds, avoiding plate overshoot or retention position deviation, and laying a stable foundation for the subsequent action of the attitude adjustment mechanism 3.

[0032] Specifically, two symmetrically arranged arc-shaped guide plates 24 are provided on one side of the blocking block. The inner arc surface of the arc-shaped guide plate 24 faces the middle of the conveyor belt body 1, and the arc surface of the arc-shaped guide plate 24 that contacts the plate is provided with a silicone protective layer 25. The bottom surface of the arc-shaped guide plate 24 is flush with the bottom surface of the blocking block.

[0033] In use, when the plate moves to the blocking block along with the conveyor belt body 1, the arc-shaped surface of the arc-shaped guide plate 24 can guide the plate to shift towards the center of the conveyor belt body 1, avoiding the plate edge from getting stuck or shifting; the arc surface of the arc-shaped guide plate 24 that contacts the plate is provided with a silicone protective layer 25, which utilizes the flexible properties of silicone to reduce the hard contact impact between the plate and the arc-shaped guide plate 24.

[0034] To address the risks of offset and damage when the plate contacts the blocking block: Two arc-shaped guide plates 24 can actively correct slight offsets during plate transport, ensuring that the plate is centered in the preset area when it is stationary, reducing the difficulty of subsequent posture adjustment mechanism 3; The silicone protective layer 25 prevents the plate surface (especially the stamped bosses) from being scratched or bumped by the arc-shaped guide plates 24, protecting the product's appearance quality and reducing rework caused by appearance damage.

[0035] Furthermore, the attitude adjustment mechanism 3 includes a lateral positioning component 31 and a longitudinal calibration component 32. The two lateral positioning components 31 are symmetrically arranged on both sides of the preset retention area along the X-axis. The lateral positioning component 31 includes a movable lateral push plate and a lateral drive cylinder. The two lateral drive cylinders drive the two lateral push plates to move towards each other / backwards to achieve lateral centering positioning of the plate. The longitudinal calibration component 32 is set at the front end of the preset retention area along the Y-axis and includes a longitudinal push plate and a longitudinal drive cylinder. The longitudinal push plate can extend and retract along the Y-axis to push the plate against the preset reference surface to complete longitudinal positioning.

[0036] In use, the attitude adjustment mechanism 3 achieves plate attitude correction through a two-way adjustment logic of lateral positioning + longitudinal calibration: Lateral positioning component 31 (two lateral push plates symmetrical along the X-axis + two lateral drive cylinders): When the two cylinders drive the two lateral push plates to move towards each other, a uniform thrust is applied from both sides of the plate, pushing the plate to the lateral center position of the conveyor belt body 1, achieving centering positioning in the X-axis direction; when the push plates move away from each other, space is left for subsequent plate placement; Longitudinal calibration component 32 (longitudinal push plate set along the Y-axis + longitudinal drive cylinder): The cylinder drives the longitudinal push plate to extend and retract, pushing the edge of the plate against a preset reference surface (such as the longitudinal positioning edge of the conveyor belt body 1), ensuring that the plate is uniformly positioned in the Y-axis direction.

[0037] Precisely solves the problem of X-axis offset and Y-axis misalignment of the plates: The bidirectional adjustment of the lateral positioning component 31 and the longitudinal calibration component 32 can significantly reduce the positional deviation of the plates on the conveyor belt body 1, ensuring that the posture of multiple plates is consistent, which provides a guarantee for the precise gripping of the robot arm and the unified clamping benchmark during CNC machining. Compared with manual adjustment, the mechanical push plate of the lateral positioning component 31 and the longitudinal calibration component 32 has uniform pushing force and stable position, avoiding posture differences caused by the randomness of manual operation and improving the consistency of mass production.

[0038] Furthermore, a flexible buffer layer 33 is provided on the side of the transverse push plate and the longitudinal push plate that contacts the plate. The flexible buffer layer 33 is made of rubber or PU material and has a thickness of 0.5-2mm.

[0039] In use, a 0.5-2mm thick flexible buffer layer 33 of rubber or PU material is provided on the side of the transverse push plate of the transverse positioning component 31 and the longitudinal push plate of the longitudinal calibration component 32 that contacts the plate. The flexible buffer layer 33 utilizes the elastic properties of rubber / PU to absorb part of the impact force when the push plate pushes the plate, avoiding hard contact between the push plate and the plate. The thickness design of the flexible buffer layer 33 takes into account both the buffering effect and the positioning accuracy. It will not be too thick, resulting in insufficient pushing force of the transverse positioning component 31 and the longitudinal calibration component 32, nor will it lose its buffering effect if it is too thin.

[0040] Balancing the need for positioning accuracy and panel protection: The flexible buffer layer 33 prevents the push plates of the lateral positioning component 31 and the longitudinal calibration component 32 from scratching the panel surface (especially the smooth surface of aluminum alloy) when adjusting the posture, avoiding scratches and indentations, and ensuring the product appearance; the flexible buffer layer 33 can adapt to slight irregularities on the edge of the panel (such as small burrs after stamping), reduce panel deformation caused by hard contact, and ensure that the flatness of the panel after adjustment meets the requirements of subsequent processing.

[0041] Furthermore, the attitude adjustment mechanism 3 also includes an attitude detection unit 34, which has a vision sensor 341 or multiple sets of displacement sensors 342. The vision sensor 341 is set above the preset dwell area and is used to collect the outline image of the board and identify the attitude deviation. The displacement sensors 342 are distributed along the X-axis and Y-axis directions and are used to detect the position offset of the edge of the board. The control unit 4 adjusts the stroke of the lateral positioning component 31 and the longitudinal calibration component 32 according to the attitude deviation data.

[0042] In use, the attitude adjustment mechanism 3 improves the attitude adjustment accuracy through closed-loop control of detection-feedback-adjustment: If it is a vision sensor 341, it is installed above the preset retention area to collect the contour image of the board in real time and analyze the attitude deviation of the board from the preset benchmark (such as X-axis offset, Y-axis misalignment, tilt angle) through image recognition algorithm; if it is a displacement sensor 342, it is distributed along the X-axis and Y-axis directions to directly detect the distance between the edge of the board and the sensor and calculate the position offset; the attitude detection unit 34 (vision sensor 341 or displacement sensor 342) transmits the deviation data to the control unit 4, and the control unit 4 dynamically adjusts the movement stroke of the lateral positioning component 31 and the longitudinal calibration component 32 according to the data (if the offset is large, the push plate movement distance is increased) to ensure that the attitude of the board meets the standard after adjustment.

[0043] To address the issues of blind or inadequate adjustments: The attitude detection unit 34, control unit 4, lateral positioning component 31, and longitudinal calibration component 32 form a closed-loop control system, avoiding the shortcomings of traditional fixed-stroke adjustments that cannot adapt to different deviations. This significantly improves the adjustment accuracy of the attitude adjustment mechanism 3, ensuring that the deviation of the plate is controlled within an acceptable range for subsequent processes. It is also compatible with different specifications of flat back shell plates (such as different length and width dimensions), eliminating the need for frequent changes to the adjustment parameters of the lateral positioning component 31 and the longitudinal calibration component 32, thus enhancing the versatility of the device.

[0044] Furthermore, the conveying surface of the conveyor belt body 1 is provided with anti-slip protrusions 11, which are evenly distributed along the conveying direction, with a protrusion height of 0.3-0.5mm and the protrusion material is wear-resistant silicone.

[0045] During use, the anti-slip protrusions 11 prevent the plate from shifting laterally or longitudinally during the conveyor belt body 1, ensuring that the plate can accurately reach the detection area of ​​the positioning and holding mechanism 2, reducing the adjustment pressure of the subsequent attitude adjustment mechanism 3; the anti-slip protrusions 11 prevent the bottom surface of the plate from making hard contact with the conveyor belt body 1, especially protecting the flatness of the bottom surface of the plate after stamping, avoiding scratches on the bottom surface caused by conveying, and reducing the failure rate of quality inspection.

[0046] Furthermore, the positioning and holding mechanism 2 also includes two guide components 26, which are vertically arranged guide columns. The blocking block is slidably sleeved on the two guide columns, and the output end of the driving component 23 is fixedly connected to the end of the blocking block to realize the smooth lifting and lowering of the blocking block.

[0047] In use, the guide assembly 26 prevents the plate from impacting and shifting due to the shaking of the blocking block during lifting and lowering, ensuring the plate's accurate positioning and reducing the additional burden on the subsequent attitude adjustment mechanism 3. The guide assembly 26 also reduces the eccentric wear between the blocking block of the blocking execution assembly 22 and the drive component 23, extending the service life of the positioning and holding mechanism 2, reducing equipment maintenance costs, and adapting to the needs of long-term large-scale production.

[0048] The positioning and adjustment device for the conveyor belt of this utility model is used in the following steps: Step 1: Panel loading and initial conveying The 7-9mm thick aluminum alloy shell plate after stamping is placed at the input end of the conveyor belt body 1. After the conveyor belt body 1 is started, it drives the plate to move along the conveying direction. At this time, the anti-slip protrusions 11 (0.3-0.5mm thick wear-resistant silicone) on the surface of the conveyor belt increase the friction between the plate and the conveying surface, and prevent the plate from shifting laterally or longitudinally due to the impact or vibration of the conveyor belt starting / stopping, so as to ensure that the plate is conveyed to the set station in a relatively stable posture.

[0049] Step 2: Arrival Inspection and Panel Delay When the plate moves with the conveyor belt body 1 to the set position of the positioning and holding mechanism 2: the two positioning detection components 21 (photoelectric sensors symmetrically arranged on both sides / above the conveyor belt body 1) detect the plate signal and immediately transmit the positioning signal to the control unit 4; After receiving the signal, the control unit 4 synchronously drives the drive component 23 (cylinder / electric push rod) of the positioning and holding mechanism 2, which drives the blocking block of the blocking execution component 22 to descend smoothly along the guide component 26 (vertical guide post) to the surface of the conveyor belt body 1. As the plate continues to move until it contacts the blocking block, the blocking block prevents the plate from moving forward. At the same time, the arc-shaped guide plate 24 on the top of the blocking block (facing the middle of the conveyor belt) guides the plate to shift laterally towards the center of the conveyor belt, eventually leaving the plate in the preset retention area. The silicone protective layer 25 on the arc surface of the arc guide plate 24 prevents the surface of the plate (including the stamped boss) from being scratched.

[0050] Step 3: Attitude Deviation Detection After the plate stabilizes, the control unit 4 triggers the attitude detection unit 34 of the attitude adjustment mechanism 3: If a vision sensor 341 is used (located above the preset dwell area): the outline image of the board is acquired in real time, and the outline of the board is compared with the preset reference through an image recognition algorithm to identify the posture deviations such as X-axis offset, Y-axis misalignment and tilt angle. If displacement sensors 342 (distributed along the X and Y axes) are used: the distance between the edge of the plate and the sensor is directly detected, and the positional offset of the plate in the lateral and longitudinal directions is calculated; The attitude detection unit 34 feeds back the deviation data to the control unit 4 in real time.

[0051] Step 4: Bidirectional Attitude Adjustment Based on the deviation data fed back by the attitude detection unit 34, the control unit 4 synchronously drives the lateral positioning component 31 and the longitudinal calibration component 32 of the attitude adjustment mechanism 3 to perform attitude correction. X-axis positioning: Two transverse drive cylinders drive two transverse push plates to move towards each other, applying uniform thrust from both sides of the plate to push the plate to the transverse center position of the conveyor belt body 1, eliminating X-axis offset; the flexible buffer layer 33 (0.5-2mm thick rubber / PU) on the side of the push plate that contacts the plate absorbs the impact force and prevents the plate from deforming or scratching. Y-axis calibration: The longitudinal drive cylinder drives the longitudinal push plate to extend along the Y-axis, pushing the edge of the plate against the preset reference surface (such as the longitudinal positioning edge of the conveyor belt body 1) to ensure that the plate is in a uniform position in the Y-axis direction and eliminate Y-axis misalignment; During the adjustment process, the attitude detection unit 34 continuously collects the attitude data of the board until the deviation meets the preset standard (such as the offset ≤ the allowable range), and the control unit 4 stops the adjustment action.

[0052] Step 5: Adjust verification and unlocking procedures After confirming that the board's posture meets the requirements, control unit 4 simultaneously executes two actions: The driving component 23 of the driving positioning and retention mechanism 2 drives the blocking block of the blocking execution component 22 to rise smoothly along the guide component 26, thereby releasing the retention restriction on the plate. Send a "gripable signal" to the subsequent robotic arm to ensure that the plate continues to be transported with the conveyor belt body 1 in a regular posture, which is adapted to the precise gripping requirements of the robotic arm.

[0053] Step 6: Preparation for Cyclic Operations After the board is gripped by the robotic arm, the control unit 4 controls the push plate of the lateral positioning component 31 to move in opposite directions and the push plate of the longitudinal calibration component 32 to retract. At the same time, the blocking block of the positioning and holding mechanism 2 is reset to the initial raised state, waiting for the next board to enter the set station. The above steps 1-5 are repeated to realize continuous batch board positioning and adjustment operations.

[0054] Finally, it should be noted that the electronic components in the positioning detection component 21 and other components in this embodiment are all general standard parts or components known to those skilled in the art. Their structure and principle can be known to those skilled in the art through technical manuals or conventional experimental methods. In the idle part of this device, all the above-mentioned electrical components are connected by wires. The specific connection method should refer to the working order between each electrical component in the above working principle to complete the electrical connection. All of these are technologies known in the art.

[0055] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A positioning and adjustment device for a conveyor belt, characterized in that: include Conveyor belt body (1), the conveyor belt body (1) is used to carry the aluminum alloy shell plate after stamping; Positioning and holding mechanism (2), the positioning and holding mechanism (2) is set at the set station of the conveyor belt body (1) and is used to detect the position status of the aluminum alloy shell plate and hold it in the preset holding area. The attitude adjustment mechanism (3) is set in the corresponding preset retention area and mounted on the conveyor belt body (1) for positioning the aluminum alloy shell plate in the X-axis direction, calibrating it in the Y-axis direction and correcting its attitude. The control unit (4) is electrically connected to the positioning and holding mechanism (2) and the attitude adjustment mechanism (3). It is used to receive the positioning and holding mechanism (2) in place, control the positioning and holding mechanism (2) to lock the aluminum alloy shell plate, and synchronously drive the attitude adjustment mechanism (3) to perform positioning calibration. After the attitude meets the standard, it controls the positioning and holding mechanism (2) to unlock, so that the plate can be adapted to the subsequent gripping and stacking of the robot arm.

2. The positioning and adjustment device on the conveyor belt according to claim 1, characterized in that: The positioning and holding mechanism (2) includes a positioning detection component (21), a blocking execution component (22), and a driving component (23). The positioning detection component (21) is a photoelectric sensor used to collect the positioning signal of the plate. Two driving components (23) are symmetrically arranged on both sides or above the conveyor belt body (1). The driving ends of the two driving components (23) are connected to the blocking execution component (22). The blocking execution component (22) is located above the conveyor belt body (1). The blocking execution component (22) includes a liftable blocking block. The driving component (23) is a cylinder or an electric push rod. The driving component (23) is driven to the blocking block. The control unit (4) controls the driving component (23) to drive the blocking block to descend onto the conveyor belt body (1) according to the positioning signal, so as to hold the plate in the preset holding area.

3. The positioning and adjustment device on the conveyor belt according to claim 2, characterized in that: Two symmetrically arranged arc-shaped guide plates (24) are provided on one side of the blocking block. The inner arc surface of the arc-shaped guide plate (24) faces the middle of the conveyor belt body (1), and the arc surface of the arc-shaped guide plate (24) that contacts the plate is provided with a silicone protective layer (25).

4. The positioning and adjustment device on the conveyor belt according to claim 1, characterized in that: The attitude adjustment mechanism (3) includes a lateral positioning component (31) and a longitudinal calibration component (32). The two lateral positioning components (31) are symmetrically arranged on both sides of the preset dwell area along the X-axis. The lateral positioning component (31) includes a movable lateral push plate and a lateral drive cylinder. The two lateral drive cylinders drive the two lateral push plates to move towards each other / backwards to achieve lateral centering of the plate. The longitudinal calibration component (32) is set at the front end of the preset dwell area along the Y-axis and includes a longitudinal push plate and a longitudinal drive cylinder. The longitudinal push plate can extend and retract along the Y-axis to push the plate against the preset reference surface to complete the longitudinal positioning.

5. The positioning and adjustment device on the conveyor belt according to claim 4, characterized in that: The side of the transverse push plate and the longitudinal push plate that contacts the plate is provided with a flexible buffer layer (33). The flexible buffer layer (33) is made of rubber or PU material and has a thickness of 0.5-2mm.

6. The positioning and adjustment device on the conveyor belt according to claim 4, characterized in that: The attitude adjustment mechanism (3) further includes an attitude detection unit (34), which is a vision sensor (341) or multiple sets of displacement sensors (342). The vision sensor (341) is set above the preset retention area and is used to collect the outline image of the board and identify the attitude deviation. The displacement sensors (342) are distributed along the X-axis and Y-axis and are used to detect the position offset of the edge of the board. The control unit (4) adjusts the movement stroke of the lateral positioning component (31) and the longitudinal calibration component (32) according to the attitude deviation data.

7. The positioning and adjustment device on the conveyor belt according to claim 1, characterized in that: The conveying surface of the conveyor belt body (1) is provided with anti-slip protrusions (11). The anti-slip protrusions (11) are evenly distributed along the conveying direction, with a protrusion height of 0.3-0.5mm and the protrusion material is wear-resistant silicone.

8. The positioning and adjustment device on the conveyor belt according to claim 2, characterized in that: The positioning and holding mechanism (2) also includes two guide components (26), which are vertically arranged guide columns. The blocking block is slidably sleeved on the two guide columns. The output end of the driving component (23) is fixedly connected to the end of the blocking block to realize the smooth lifting and lowering of the blocking block.

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