Biscuit processing and conveying mechanism with limiting and rectifying mechanism

Abstract

The present application relates to the technical field of food processing, and particularly relates to a biscuit processing and conveying mechanism with a limiting and deviation rectifying mechanism, a rack, a conveying belt arranged on the inner side of the rack, a control box fixedly installed on the outer side of the rack, and a plurality of limiting and deviation rectifying assemblies installed on the rack, a central controller is built-in the control box, a high-precision clock synchronization module is built-in the central controller, and the plurality of limiting and deviation rectifying assemblies are respectively controlled through the central controller; the limiting and deviation rectifying assembly is additionally arranged, the long conveying belt is divided into a plurality of stable sections through distributed layout, the cumulative effect of deviation is effectively inhibited through active intervention at key nodes, meanwhile, the laser displacement sensor collects the edge coordinates of the conveying belt at respective positions in real time, and uploads data to the central controller, and the central controller judges whether the deviation is local disturbance or global trend based on a deviation gradient algorithm.

Description

Technical Field

[0001] This invention relates to the field of food processing technology, and in particular to a biscuit processing conveying mechanism with a limit and correction mechanism. Background Technology

[0002] In the processing of shortbread biscuits, the biscuits are mostly characterized by their crispness and fragility, requiring a high degree of uniformity in their shape, which places extremely stringent demands on the stability of the conveying process. Generally, in order to meet the production needs of large-scale mass production, existing biscuit conveying devices mostly consist of a long conveyor line, with multiple biscuits continuously transported on the line in an arrangement. In this process, the belt conveyor plays a crucial role.

[0003] However, in actual operation, conveyor belt misalignment is a common and challenging technical problem. The causes of misalignment are complex and varied, mainly including: uneven tension or stretching deformation of the conveyor belt itself due to long-term use; parallelism errors during the installation of the drive and driven rollers; lateral impact forces caused by uneven material drop points; and dynamic vibrations generated during high-speed operation. Once misalignment occurs, it can lead to minor issues such as product misalignment and disruption of subsequent processes (e.g., sandwiching, packaging); or serious incidents such as severe friction between the conveyor belt edge and the frame, causing belt tearing, product spillage, or even a complete production line shutdown, severely impacting production continuity and food safety.

[0004] To address the aforementioned issues, various tracking devices have been developed in the prior art, commonly including mechanical passive tracking rollers, sensor-based active tracking mechanisms, and belt tracking mechanisms positioned in the middle of the conveyor line. However, these devices still have significant drawbacks when applied to the food industry. Poor single-stage correction effect: If only single-stage correction is set at the end, it is difficult to eliminate the slight serpentine movement on the entire line, resulting in the biscuit formation having a deviation before reaching the handover point; Straightening impact causes belt vibration: When a traditional rigid straightening mechanism performs macroscopic position adjustment under the drive of a cylinder, it generates instantaneous impact force. This impact is transmitted to the conveyor belt through the rotating roller, causing belt vibration and disrupting the stable biscuit formation. Tension imbalance between front and rear rollers: During long-distance conveying, tension imbalance between front and rear rollers can occur due to temperature changes, load fluctuations, or belt creep, causing belt snaking. At the same time, insufficient tension can cause the biscuits to slip during acceleration / deceleration, disrupting the formation.

[0005] To address the aforementioned issues, there is an urgent need for a biscuit processing conveying mechanism with a limit and correction mechanism. Summary of the Invention

[0006] In order to overcome the problem that an existing biscuit processing conveyor mechanism with a limit correction mechanism cannot reduce the impact caused by conveyor belt correction while maintaining multiple stable sections.

[0007] The technical solution of the present invention is as follows: a biscuit processing conveyor mechanism with a limit correction mechanism, including a frame, a conveyor belt disposed inside the frame, a control box fixedly installed outside the frame, and multiple sets of limit correction components installed on the frame. The control box has a built-in central controller, and the central controller has a built-in high-precision clock synchronization module. The multiple sets of limit correction components are controlled separately by the central controller. The central controller determines whether the deviation is a local disturbance or a global trend based on the deviation gradient algorithm (e.g., calculating the offset difference Δx / ΔL between two adjacent measuring points). The multiple sets of limit correction components are evenly distributed on the frame. For example, when two sets of limit correction components are set, the two sets of limit correction components are located at 1 / 3 and 2 / 3 of the total length of the frame, respectively. A belt stabilizing component for attenuating the vibration of the conveyor belt is also installed on the frame. The belt stabilizing component is located downstream of the limit correction components. Each set of limit and correction components includes correction cylinders mounted on both sides of the frame via hinged seats, correction brackets fixedly connected to the output end of the correction cylinders, floating limit units mounted inside the correction brackets, correction rollers mounted on the floating limit units, and laser displacement sensors fixedly mounted on the upper end of the frame. The laser displacement sensors are used to detect the offset of the conveyor belt edge relative to the preset reference position in real time. The central controller generates control commands to drive the correction cylinders based on the offset signal from the laser displacement sensors.

[0008] As a preferred embodiment, the floating limiting unit includes a roller end floating structure and a roller circumference buffer structure; The roller end floating structure includes a symmetrically distributed fixed frame, a locking block set on one side of the fixed frame, a damper and a buffer spring arranged in parallel between the fixed frame and the locking block, and a bearing seat fixedly installed on the locking block to fix the position of the correction roller. The fixed frame is rotatably installed on the correction bracket through a connecting rod. The buffer spring and damper are used to provide axial freedom and isolate external impacts.

[0009] Preferably, the roller circumferential buffer structure is used to absorb and buffer the instantaneous impact force during the adjustment process. It includes a high-damping elastic buffer cylinder sleeved on the outside of the straightening roller, a rigid bushing sleeved between the straightening roller and the high-damping elastic buffer cylinder, and the outer circumferential surface of the high-damping elastic buffer cylinder rolling contact with the bottom surface of the conveyor belt.

[0010] Preferably, the smooth pressing assembly includes a guide rail fixedly mounted on the upper surface of the frame and a slider disposed inside the guide rail, the guide rail being used to drive the slider to move along the length direction of the frame.

[0011] Preferably, the smooth belt pressing assembly also includes a suspension fixedly connected to the inside of the slider, a belt pressing strip disposed on the lower side of the suspension, and a shock-absorbing spring fixedly connected between the suspension and the belt pressing strip. Inside the belt pressing strip, rollers that roll with the conveyor belt are mounted via shafts, and the rollers are in contact with the upper surface of the conveyor belt.

[0012] Preferably, a drive roller is provided at the front end of the frame, and a driven roller seat that can slide along the longitudinal direction of the frame is provided at the rear end of the frame. The conveyor belt is sleeved between the drive roller and the driven roller seat, and multiple sets of intermediate rollers consistent with the drive roller and the driven roller seat are evenly distributed on the inner side of the frame. The frame is equipped with dual-end coordinated tension adjustment components at both the front and rear ends. These components are used to protect the tension balance between the front and rear rollers of the frame and include a front active tensioning unit and a rear adaptive tensioning unit.

[0013] Preferably, the front-end active tensioning unit includes a mounting bracket fixed on the frame, an adjusting cylinder mounted on the upper surface of the mounting bracket, a lifting bracket set at the output end of the adjusting cylinder, and a tensioning roller rotatably mounted on the lifting bracket. The adjusting cylinder drives the lifting bracket and the tensioning roller to move downward as a whole to adjust the tension of the conveyor belt.

[0014] Preferably, the rear adaptive tensioning unit includes a movable bracket mounted on the frame, disc springs disposed on the upper and lower sides of the movable bracket, and a hanging wheel rotatably mounted on the movable bracket, wherein the disc springs are compressed and buffered when the load suddenly increases.

[0015] Preferably, the rear adaptive tensioning unit also includes a steel wire rope wound on the pulley and a counterweight fixedly installed at the end of the steel wire rope. When the conveyor belt extends, the driven roller seat moves backward under the traction of the counterweight to compensate for the extension.

[0016] Preferably, an industrial camera for capturing real-time images of the biscuit formation is mounted on the rack via a bracket. The output of the industrial camera is electrically connected to the image processing module of the central controller for real-time feedback on the biscuit formation status.

[0017] The beneficial effects of this invention are: 1. The biscuit processing conveyor mechanism with limit correction mechanism, by adding limit correction components, adopts a distributed layout to divide the long conveyor belt into multiple stable sections, and actively intervenes at key nodes to effectively suppress the cumulative effect of deviation. At the same time, the laser displacement sensor collects the edge coordinates of the conveyor belt at its respective position in real time and uploads the data to the central controller. The central controller determines whether the deviation is a local disturbance or a global trend based on the deviation gradient algorithm.

[0018] 2. By setting up a floating limit unit, the position is adjusted under the drive of the cylinder to achieve correction. At the same time, it can absorb and buffer the instantaneous impact force during the adjustment process, prevent the impact force from being transmitted to the conveyor belt through the roller, causing belt vibration, and avoid disrupting the stable biscuit formation.

[0019] 3. By adding a smooth belt pressing component downstream of the limit correction component, after the biscuit passes through the correction roller, the pressing strip quickly attenuates the micro-radial up-and-down vibration of the conveyor belt caused by the reaction force through damping contact, so that the belt returns to smoothness before entering the next section, thereby indirectly stabilizing the biscuit posture.

[0020] 4. By setting up a double-end coordinated tension adjustment component, the driven roller automatically moves backward to compensate when the belt stretches, and the disc spring is compressed and buffered when the load suddenly increases, so as to avoid the tension from rising suddenly and thus protect the biscuit formation.

[0021] 5. By setting up a central controller, industrial camera and laser displacement sensor, images of the biscuit formation are captured in real time. The image processing module calculates the centerline offset and column spacing standard deviation of each row of biscuits. If the formation disorder is detected (e.g., standard deviation > threshold), even if the conveyor belt position is normal, a "soften correction parameter" command is sent to the central controller. The controller then reduces the cylinder propulsion speed and stroke of subsequent correction actions and instead relies on the passive fine adjustment of the roller buffer structure to achieve the closed-loop coordination of "correction-tension-vision". Attached Figure Description

[0022] Figure 1 The image shown is an overall top view of the invention; Figure 2 The diagram shown is a schematic representation of the overall structure of the present invention. Figure 3 What is shown is Figure 2 Enlarged view of point A in the middle; Figure 4 The diagram shown is a schematic representation of the structure of the positioning and correction component of the present invention. Figure 5 The diagram shown is a schematic representation of the structure of the floating limiting unit of the present invention. Figure 6 The diagram shown is a structural schematic of the tape-pressing assembly of the present invention. Figure 7 This invention is shown. Figure 6 Enlarged view of point B in the middle; Figure 8 The diagram shown is a distribution diagram of the active tensioning unit at the front end of this invention; Figure 9 The diagram shown is a structural schematic of the active tensioning unit at the front end of the present invention. Figure 10 The diagram shown is a distribution diagram of the adaptive tensioning unit at the back end of this invention; Figure 11 The diagram shown is a schematic representation of the structure of the adaptive tensioning unit at the back end of this invention.

[0023] Explanation of reference numerals in the attached drawings: 1. Frame; 11. Drive roller; 12. Driven roller seat; 2. Conveyor belt; 3. Limiting and correcting assembly; 31. Correcting cylinder; 311. Hinge seat; 32. Floating limit unit; 321. Fixed frame; 3211. Connecting rod; 322. Damper; 323. Buffer spring; 324. Bearing seat; 325. Clamping block; 326. High-damping elastic buffer cylinder; 327. Rigid bushing; 33. Correcting bracket; 34. Correcting roller; 35. Laser displacement. 4. Sensor; 5. Smooth belt pressing assembly; 6. Guide rail; 7. Slider; 8. Suspension; 9. Pressing strip; 10. Shock-absorbing spring; 11. Roller; 12. Industrial camera; 13. Control box; 14. Front active tensioning unit; 15. Mounting bracket; 16. Adjusting cylinder; 17. Lifting bracket; 18. Tensioning roller; 19. Rear adaptive tensioning unit; 10. Movable bracket; 11. Disc spring; 12. Hanging wheel; 13. Wire rope; 14. Counterweight. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] Please see Figures 1-11This invention provides an embodiment of a biscuit processing conveying mechanism with a limit correction mechanism, comprising a frame 1, a conveyor belt 2 disposed inside the frame 1, a control box 6 fixedly installed outside the frame 1, and multiple sets of limit correction components 3 installed on the frame 1. The control box 6 has a built-in central controller, which has a built-in high-precision clock synchronization module. The multiple sets of limit correction components 3 are all controlled separately by the central controller. The central controller determines whether the deviation is a local disturbance or a global trend based on a deviation gradient algorithm (e.g., calculating the offset difference Δx / ΔL between two adjacent measuring points). The multiple sets of limit correction components 3 are evenly distributed on the frame 1. For example, when two sets of limit correction components 3 are set, the two sets... The limit correction components 3 are located at 1 / 3 and 2 / 3 of the total length of the frame 1, respectively. This layout can effectively distinguish and handle two different types of deviation (local disturbance: such as a small instantaneous deviation caused by a single cookie falling or a brief foreign object interference; global trend: such as a continuous deviation of the entire conveyor belt 2 caused by tension imbalance or roller wear). By calculating in real time the ratio of the deviation difference (Δx) collected by the two sets of laser displacement sensors 35 to its physical distance (ΔL) (i.e., Δx / ΔL), if the gradient value exceeds the preset threshold, it is determined to be a global trend deviation, and dual-point collaborative correction needs to be started; otherwise, it is regarded as a local disturbance, and only the downstream correction component needs to make fine adjustments. The frame 1 is also equipped with a belt stabilizing assembly 4 for damping the vibration of the conveyor belt 2. The belt stabilizing assembly 4 is located downstream of the limit correction assembly 3. An industrial camera 5 for capturing real-time images of the biscuit formation is mounted on the frame 1 via a bracket. The output of the industrial camera 5 is electrically connected to the image processing module of the central controller for real-time feedback of the biscuit formation status. The central controller dynamically adjusts the response threshold or tension parameter of the limit correction assembly 3 according to the biscuit formation image. If the formation is already scattered, the correction response threshold can be appropriately relaxed to avoid over-adjustment causing secondary damage. In one embodiment of the present invention, in the deviation gradient algorithm adopted by the central controller, the judgment threshold of the ratio of the offset difference (Δx) to its physical distance (ΔL) (i.e., Δx / ΔL) can be set in the range of 0.10 mm / m to 0.30 mm / m. When the calculated gradient value exceeds 0.30 mm / m, the system determines it as a global trend deviation and triggers the coordinated correction action of the two sets of limit correction components 3; when the gradient value is lower than or equal to 0.10 mm / m, it is considered as normal fluctuation or no significant deviation; if the gradient value is between the two, it is combined with the pancake formation status fed back by the industrial camera 5 for comprehensive judgment. Furthermore, to avoid secondary damage to the product caused by excessive correction, the central controller can dynamically adjust the sensitivity of the correction response based on the degree of disorder in the biscuit formation detected by the industrial camera 5. For example, when a significant misalignment or breakage in the formation is detected, the system can appropriately relax the aforementioned gradient judgment threshold, but its upper limit should not exceed 0.50 mm / m. This relaxation mechanism is only used to temporarily suppress frequent correction actions to ensure the smoothness of the conveying process. Once the formation stabilizes, the threshold will automatically return to the initial set range. Each set of limit and correction components 3 includes correction cylinders 31 mounted on both sides of the frame 1 via hinge seats 311, correction brackets 33 fixedly connected to the output end of the correction cylinders 31, floating limit units 32 mounted inside the correction brackets 33, correction rollers 34 mounted on the floating limit units 32, and laser displacement sensors 35 fixedly mounted on the upper end of the frame 1. The laser displacement sensors 35 are used to detect the offset of the edge of the conveyor belt 2 relative to a preset reference position in real time. The central controller generates control commands to drive the correction cylinders 31 based on the offset signal from the laser displacement sensors 35. The laser displacement sensors 35 non-contactly monitor the precise position of the edge of the conveyor belt 2 in real time and transmit the data back to the central controller at high speed, forming a complete "perception-decision-execution" closed loop. When the central controller issues a command, the correction cylinders 31 extend and retract, pushing the correction brackets 33 to swing at a small angle around the hinge seats 311.

[0026] Please see Figures 2-5 The floating limit unit 32 includes a roller end floating structure and a roller circumference buffer structure. The roller end floating structure includes a symmetrically distributed fixed frame 321, a locking block 325 disposed on one side of the fixed frame 321, a damper 322 and a buffer spring 323 disposed side by side between the fixed frame 321 and the locking block 325, and a bearing seat 324 fixedly mounted on the locking block 325 for fixing the position of the correction roller 34. The fixed frame 321 is rotatably mounted on the correction bracket 33 via a connecting rod 3211. The buffer spring 323 and the damper 322 are used to provide axial freedom and isolate external impacts. When the correction action occurs, the buffer spring 323 provides the necessary axial freedom, allowing the correction roller 34 to adjust its position; while the damper 322 can effectively absorb and dissipate the kinetic energy during the movement, isolate external impacts, and prevent rigid collisions. The roller circumferential buffer structure is used to absorb and buffer the instantaneous impact force during the adjustment process. It includes a high-damping elastic buffer cylinder 326 sleeved on the outside of the correction roller 34 and a rigid bushing 327 sleeved between the correction roller 34 and the high-damping elastic buffer cylinder 326. The outer circumferential surface of the high-damping elastic buffer cylinder 326 rolls in contact with the bottom surface of the conveyor belt 2. Its high damping characteristics can convert the instantaneous impact force generated during the correction process into heat energy dissipation, which greatly reduces the vibration energy transmitted to the conveyor belt 2 and the biscuit.

[0027] Please see Figures 6-7 The smooth belt pressing assembly 4 includes a guide rail 41 fixedly mounted on the upper surface of the frame 1 and a slider 42 disposed inside the guide rail 41. The guide rail 41 drives the slider 42 to move along the length of the frame 1. The smooth belt pressing assembly 4 also includes a suspension 43 fixedly connected to the inner side of the slider 42, a pressing strip 44 disposed below the suspension 43, and a shock-absorbing spring 45 fixedly connected between the suspension 43 and the pressing strip 44. Inside the pressing strip 44, rollers 46 that roll with the conveyor belt 2 are mounted via shafts and fit against the upper surface of the conveyor belt 2. When the conveyor belt 2 bounces up and down due to the correction action or its own operation, the rollers 46 will rise and fall accordingly. Through the compression and rebound of the shock-absorbing spring 45, the vibration energy is absorbed and attenuated, thereby ensuring that the conveyor belt 2 can quickly return to a stable state after correction, providing a stable bearing platform for the biscuits.

[0028] Please see Figures 8-9 The frame 1 has a drive roller 11 at its front end and a driven roller seat 12 that can slide longitudinally along the frame at its rear end. The conveyor belt 2 is fitted between the drive roller 11 and the driven roller seat 12. Multiple sets of intermediate rollers, identical to the drive roller 11 and the driven roller seat 12, are evenly distributed on the inner side of the frame 1. A dual-end coordinated tension adjustment assembly is provided at both the front and rear ends of the frame 1. This assembly is used to maintain the tension balance between the front and rear rollers of the frame 1. It includes a front active tensioning unit 71 and a rear adaptive tensioning unit 72. The front active tensioning unit 71 includes a mounting bracket 711 fixed to the frame 1, an adjusting cylinder 712 mounted on the upper surface of the mounting bracket 711, a lifting bracket 713 located at the output end of the adjusting cylinder 712, and a tensioning roller 714 rotatably mounted on the lifting bracket 713. The adjusting cylinder 712 drives the lifting bracket 713 and the tensioning roller 714 to move downwards as a whole to adjust the tension of the conveyor belt 2. The central controller can actively control the extension and retraction of the regulating cylinder 712 according to production needs (such as start-up, stop, speed changes) or the formation information fed back by the industrial camera 5, thereby accurately and quickly adjusting the overall tension of the conveyor belt 2.

[0029] Please see Figures 10-11The rear adaptive tensioning unit 72 includes a movable bracket 721 mounted on the frame 1, disc springs 722 disposed on the upper and lower sides of the movable bracket 721, and a hanging wheel 723 rotatably mounted on the movable bracket 721. When the load suddenly increases, the disc springs 722 are compressed for buffering. The rear adaptive tensioning unit 72 also includes a steel wire rope 724 wound on the hanging wheel 723 and a counterweight 725 fixedly mounted on the end of the steel wire rope 724. When the conveyor belt 2 extends, the driven roller seat 12 moves backward under the traction of the counterweight 725 for compensation. When the production line load suddenly increases (such as a large accumulation of biscuits), the disc springs 722 are compressed to absorb the impact and protect the conveyor belt 2 and the drive system. At the same time, through the constant force traction system composed of the hanging wheel 723, the steel wire rope 724 and the counterweight 725, the driven roller seat 12 can be automatically pulled backward when the conveyor belt 2 naturally extends due to long-term use, realizing stepless and adaptive compensation of tension and always maintaining tension balance.

[0030] Working principle: First, after the system starts up, the central controller initializes all sensors. Laser displacement sensor 35 continuously scans the edge position of conveyor belt 2, and industrial camera 5 monitors the biscuit formation in real time.

[0031] The central controller receives data from two sets of laser displacement sensors 35 and uses a deviation gradient algorithm (Δx / ΔL) to determine the nature of the deviation. If it is a local disturbance, only the downstream correction component is instructed to act; if it is a global trend, the two sets of correction components are controlled in a coordinated manner to gently push the conveyor belt 2 back to the center line. At the same time, image data from the industrial camera 5 is used as an auxiliary criterion to optimize the correction strategy.

[0032] Upon receiving the command, the correction cylinder 31 pushes the correction bracket 33 to swing. This action is transmitted to the correction roller 34 through the floating limit unit 32. During this process, the buffer spring 323 and damper 322 at the roller end absorb most of the rigid impact, while the high-damping elastic buffer cylinder 326 around the roller further softens the remaining instantaneous impact force, ensuring that the correction action has minimal impact on the conveyor belt 2 and the biscuit.

[0033] After the correction action is completed, the conveyor belt 2 may have residual vibration. At this time, the downstream stabilizing belt pressing assembly 4 begins to function. Its rollers 46 are in contact with the belt surface, and through the damping action of the shock-absorbing springs 45, the up-and-down shaking is quickly attenuated, allowing the conveyor belt 2 to return to stability.

[0034] Throughout the process, the front-end active tensioning unit 71 adjusts the macroscopic tension according to the instructions of the central controller, while the back-end adaptive tensioning unit 72 is always ready to deal with sudden load changes and belt elongation. The two work together to fundamentally eliminate the hidden danger of belt deviation caused by tension imbalance.

[0035] Experimental data detection:

[0036] Conclusion: In Scenario 1, the gradient G is always a relatively small positive value (0.16 - 0.25 mm / m), indicating that the deviation develops smoothly and consistently along the conveying direction. This is a typical global problem. At this time, the central controller will coordinate the control of two groups of deviation correction components, gently pushing the entire belt back to the center in a coordinated manner to avoid stress concentration caused by single-point strong deviation correction.

[0037] In Scenario 2, the gradient G shows a negative value with a very large absolute value but a very short duration (-0.32 mm / m). This indicates that the deviation only occurs near Sensor A, and the downstream Sensor B is hardly affected. This is a typical local instantaneous disturbance. After the algorithm determines it as a local disturbance, it only instructs the downstream deviation correction component to make fine adjustments or not act, allowing the belt to return to the correct position naturally relying on its own tension, thus avoiding secondary interference to the biscuit formation caused by unnecessary deviation correction actions.

[0038] This solution quickly identifies this as a serious systematic failure through a high gradient value (0.35 - 0.40 mm / m). While performing deviation correction, the central controller will immediately trigger the dual-end coordinated tension adjustment component: instruct the front-end active tensioning unit 71 to increase the tension and monitor the status of the rear-end adaptive tensioning unit 72. This multi-system linkage strategy solves the problem at the root and significantly shortens the fault recovery time.

Claims

1. A biscuit processing conveying mechanism with a limit and correction mechanism, characterized in that: Includes a frame (1), a conveyor belt (2) set inside the frame (1), a control box (6) fixedly installed on the outside of the frame (1), and multiple sets of limit correction components (3) installed on the frame (1). The control box (6) has a built-in central controller, and the central controller has a built-in high-precision clock synchronization module. The multiple sets of limit correction components (3) are all controlled by the central controller, and the multiple sets of limit correction components (3) are evenly distributed on the frame (1). The frame (1) is also equipped with a smooth belt pressing component (4) for attenuating the vibration of the conveyor belt (2). The smooth belt pressing component (4) is set downstream of the limit correction component (3). Each set of limit correction components (3) includes correction cylinders (31) mounted on both sides of the frame (1) via hinge seats (311), correction brackets (33) fixedly connected to the output end of correction cylinders (31), floating limit units (32) mounted inside the correction brackets (33), correction rollers (34) mounted on the floating limit units (32), and laser displacement sensors (35) fixedly mounted on the upper end of the frame (1). The laser displacement sensors (35) are used to detect the offset of the edge of the conveyor belt (2) relative to the preset reference position in real time. The central controller generates control commands to drive the correction cylinders (31) based on the offset signal of the laser displacement sensors (35).

2. The biscuit processing conveying mechanism with a limit and correction mechanism according to claim 1, characterized in that: The floating limit unit (32) includes a roller end floating structure and a roller circumference buffer structure; The roller end floating structure includes a symmetrically distributed fixed frame (321), a locking block (325) set on one side of the fixed frame (321), a damper (322) and a buffer spring (323) arranged in parallel between the fixed frame (321) and the locking block (325), and a bearing seat (324) fixedly installed on the locking block (325) for fixing the position of the correction roller (34). The fixed frame (321) is rotatably mounted on the correction bracket (33) through a connecting rod (3211). The buffer spring (323) and the damper (322) are used to provide axial freedom and isolate external impacts.

3. A biscuit processing conveying mechanism with a limit and correction mechanism according to claim 2, characterized in that: The roller buffer structure is used to absorb and buffer the instantaneous impact force during the adjustment process. It includes a high-damping elastic buffer cylinder (326) sleeved on the outside of the correction roller (34) and a rigid bushing (327) sleeved between the correction roller (34) and the high-damping elastic buffer cylinder (326). The outer peripheral surface of the high-damping elastic buffer cylinder (326) is in rolling contact with the bottom surface of the conveyor belt (2).

4. A biscuit processing conveying mechanism with a limit and correction mechanism according to claim 1, characterized in that: The smooth pressing assembly (4) includes a guide rail (41) fixedly mounted on the upper surface of the frame (1) and a slider (42) disposed inside the guide rail (41). The guide rail (41) is used to drive the slider (42) to move along the length direction of the frame (1).

5. A biscuit processing conveying mechanism with a limit and correction mechanism according to claim 4, characterized in that: The smooth belt pressing assembly (4) also includes a suspension (43) fixedly connected to the inside of the slider (42), a pressing strip (44) set on the lower side of the suspension (43), and a shock-absorbing spring (45) fixedly connected between the suspension (43) and the pressing strip (44). Inside the pressing strip (44), there is a roller (46) that rolls with the conveyor belt (2) via a shaft. The roller (46) is attached to the upper surface of the conveyor belt (2).

6. A biscuit processing conveying mechanism with a limit and correction mechanism according to claim 1, characterized in that: The front end of the frame (1) is provided with a drive roller (11), and the rear end of the frame (1) is provided with a driven roller seat (12) that can slide along the longitudinal direction of the frame. The conveyor belt (2) is sleeved between the drive roller (11) and the driven roller seat (12), and multiple sets of intermediate rollers consistent with the drive roller (11) and the driven roller seat (12) are evenly distributed on the inner side of the frame (1). The frame (1) is provided with a dual-end coordinated tension adjustment component at both ends. The dual-end coordinated tension adjustment component is used to protect the tension balance between the front and rear rollers of the frame (1). It includes a front active tensioning unit (71) and a rear adaptive tensioning unit (72).

7. A biscuit processing conveying mechanism with a limit and correction mechanism according to claim 6, characterized in that: The front-end active tensioning unit (71) includes a mounting bracket (711) fixed on the frame (1), an adjusting cylinder (712) mounted on the upper surface of the mounting bracket (711), a lifting bracket (713) set at the output end of the adjusting cylinder (712), and a tensioning roller (714) rotatably mounted on the lifting bracket (713). The adjusting cylinder (712) drives the lifting bracket (713) and the tensioning roller (714) to move down as a whole to adjust the tension of the conveyor belt (2).

8. A biscuit processing conveying mechanism with a limit and correction mechanism according to claim 7, characterized in that: The rear adaptive tensioning unit (72) includes a movable bracket (721) mounted on the frame (1), disc springs (722) set on the upper and lower sides of the movable bracket (721), and a rotatable caster (723) mounted on the movable bracket (721). When the load suddenly increases, the disc springs (722) are compressed and buffered.

9. A biscuit processing conveying mechanism with a limit and correction mechanism according to claim 8, characterized in that: The rear adaptive tensioning unit (72) also includes a wire rope (724) wound on a pulley (723) and a counterweight (725) fixedly installed at the end of the wire rope (724). When the conveyor belt (2) extends, the driven roller seat (12) moves backward under the traction of the counterweight (725) to compensate for the backward movement.

10. A biscuit processing conveying mechanism with a limit and correction mechanism according to claim 1, characterized in that: An industrial camera (5) for capturing images of the biscuit formation in real time is mounted on the frame (1) via a bracket. The output of the industrial camera (5) is electrically connected to the image processing module of the central controller for real-time feedback of the biscuit formation status.

Images