Automatic deviation rectifying system for conveying belt

Abstract

The utility model discloses an automatic deviation rectifying system for a conveying belt, which comprises the conveying belt supported at the upper part of a spreading machine bedplate, a deviation rectifying device is arranged at the side part of the spreading machine bedplate, the deviation rectifying device comprises lever driving mechanisms arranged at the two sides of the conveying belt, and deviation rectifying wheels connected with the end parts are driven by the lever driving mechanisms to clamp the conveying belt for pulling deviation rectifying. The lever driving mechanism is driven and controlled through a deviation rectifying detection system, the system has the advantages of being accurate in control, high in response sensitivity and free of manual intervention, compared with a traditional deviation rectifying mode, the fault rate of a production line is lower, the product quality is more stable, the production cost is lower, and the system has the advantages of being simple in structure, small in occupied space and convenient to install. The device can be widely applied to various artificial board production lines.

Description

Technical Field

[0001] This utility model relates to the field of conveyor belt correction for engineered wood products, and specifically to an automatic conveyor belt correction system. Background Technology

[0002] my country is the world's largest producer of engineered wood products. By the end of 2024, my country had more than 100 continuous production lines for engineered wood products. As an important piece of equipment in engineered wood product production lines, the laying system's conveyor belt often deviates during the production process, causing raw materials to become stuck on the conveyor belt and affecting production. Therefore, it is necessary to study an automatic conveyor belt correction system to solve the above problems. Utility Model Content

[0003] To address the aforementioned problems, this invention provides an automatic conveyor belt correction system.

[0004] This utility model is achieved through the following technical solution:

[0005] An automatic conveyor belt correction system includes a conveyor belt supported on the upper part of a paving machine platform. A correction device is provided on the side of the paving machine platform. The correction device includes a lever drive mechanism on both sides of the conveyor belt. The correction wheel connected to the end of the lever drive mechanism is driven to clamp the conveyor belt and pull it to correct its deviation. The lever drive mechanism is driven and controlled by a correction detection system.

[0006] Further optionally, the lever drive mechanism includes a support column, with a crossbar connected to the upper part of the support column. The lower part of one side of the crossbar is hinged to one side of the lever via a cylinder. The middle part of the lever is hinged to the support column. The other end of the lever rotatably supports a correction wheel located on the upper edge of the conveyor belt.

[0007] Alternatively, a support wheel is provided directly below the correction wheel to support the bottom edge of the conveyor belt, and the support wheel is installed at the end of the connecting rod on the side of the support column.

[0008] Alternatively, the deviation correction detection system includes actuating wheels on both sides of the conveyor belt, the actuating wheels being connected to actuating rods of corresponding angular displacement sensors, and the angular displacement sensors being mounted on the side of the support column via connecting rods.

[0009] Alternatively, the angular displacement sensors on both sides of the conveyor belt are electrically connected to the PLC controller, and the PLC controller is connected to the control valve that drives the cylinder.

[0010] Alternatively, a certain offset distance can be set between the two sides of the conveyor belt and the corresponding actuating wheel.

[0011] Alternatively, the correction wheel and support wheel may be made of rubber.

[0012] Compared with existing technologies, the advantages of this utility model are: this utility model has the characteristics of precise control, high response sensitivity, and no need for manual intervention. Compared with traditional correction methods, the failure rate of the production line is lower, the product quality is more stable, and the production cost is lower. Moreover, the system has the characteristics of simple structure, small space occupation, and convenient installation, and can be widely used in various artificial board production lines. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 yes Figure 1 Side view of the center correction device;

[0015] Figure 3 This is a force diagram of the practical straightening wheel during straightening;

[0016] Figure 4 This is a connection diagram of this practical system;

[0017] In the diagram: 1. Paving machine platform; 2. Conveyor belt; 3. Correction device; 4. Support column; 5. Crossbar; 6. Cylinder; 7. Lever; 8. Correction wheel; 9. Support wheel; 10. Control valve; 11. Actuating wheel; 12. Angular displacement sensor; 13. Connecting rod; 14. PLC controller. Detailed Implementation

[0018] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0019] like Figure 1 As shown, an automatic conveyor belt correction system includes a conveyor belt 2 supported on the upper part of a paving machine platform 1. A correction device 3 is provided on the side of the paving machine platform 1. The correction device 3 includes lever drive mechanisms on both sides of the conveyor belt 2. The correction wheel 8 connected to the end of the lever drive mechanism is driven to clamp the conveyor belt 2 and pull it to correct its deviation. The lever drive mechanism is driven and controlled by a correction detection system.

[0020] like Figure 2 As shown, the lever drive mechanism includes a support column 4, a crossbar 5 connected to the upper part of the support column 4, a lower part of one side of the crossbar 5 being hinged to one side of the lever 7 via a cylinder 6, a middle part of the lever 7 being hinged to the support column 4, and a correction wheel 8 located on the upper edge of the conveyor belt 2 being rotatably supported at the other end of the lever 7.

[0021] like Figure 2 As shown, a support wheel 9 is provided directly below the correction wheel 8 to support the bottom edge of the conveyor belt 2. The support wheel 9 is installed at the end of the connecting rod on the side of the support column 4.

[0022] like Figure 1 , 2As shown, the deviation correction detection system includes actuating wheels 11 on both sides of the conveyor belt 2. The actuating wheels 11 are connected to the actuating rods of the corresponding angular displacement sensors 12. The angular displacement sensors 12 are installed on the side of the support column 4 through connecting rods 13.

[0023] like Figure 4 As shown, the angular displacement sensors 12 on both sides of the conveyor belt 2 are electrically connected to the PLC controller 14, and the PLC controller 14 is driven by the control valve 10 that drives the cylinder 6.

[0024] like Figure 4 As shown, there is a certain offset gap between the two sides of the conveyor belt 2 and the corresponding actuating wheel 11. This offset gap can be set to 2-4mm. This offset range can avoid the correction system from being involved for a long time and ensure the stable operation of the entire system.

[0025] The correction wheel 8 and the support wheel 9 are made of rubber. The support wheel 9 not only has a large frictional pull, but also makes soft contact when it pulls and clamps the edge of the conveyor belt 2, so as to avoid the conveyor belt 2 being pulled and damaged.

[0026] The implementation principle of an automatic conveyor belt correction system according to an embodiment of this application is as follows:

[0027] When the paving conveyor belt 2 runs on the paving machine platform 1 to transport timber raw materials, if it deviates to the left, the paving conveyor belt 2 pushes the actuating wheel 11 to move to the left. The actuating wheel 11 rotates through the actuating rod, triggering the angular displacement sensor 12. The angular displacement sensor 12 detects the deviation of the conveyor belt 2 and transmits the deviation signal to the PLC controller 14. The PLC controller 14 controls the pneumatic proportional control valve 10 of the right (opposite) lever drive mechanism. Through the control valve 10, the cylinder 6 is controlled to retract. The retracted cylinder 6 of the lever drive mechanism drives the lever 7 to rotate. The correction wheel 8, which is close to the side of the conveyor belt 2, rotates downward to the side, thereby pressing the right side of the conveyor belt 2. When the correction wheel 8 deviates, it will apply a correction force F3 to the right side of the conveyor belt 2 (the pressure applied by the correction wheel 8 when it deviates is F1). Figure 3 As shown, F1 is decomposed into downward and rightward forces F2 and F3. The downward force F2 is supported and offset by the support wheel 9. As the deflection angle of the correction wheel 8 increases, F3 increases. Under the action of the pulling force F3, the conveyor belt 2 moves to the right and returns to the normal trajectory. The greater the deviation, the greater the output opening of the servo control valve 10, and the greater the clamping and correction force.

[0028] After returning to the normal trajectory, the conveyor belt 2 disengages from the previously triggered actuating wheel 11. The corresponding angular displacement sensor 12 transmits a signal to the PLC controller 14. When the PLC controller 14 controls the control valve 10 to reverse its action, the cylinder 6 extends, causing the right-side correction wheel 8 to move upward and stop applying correction force to the conveyor belt 2.

[0029] This system is characterized by reliable operation, sensitive response, and precise control. The deviation of the paving belt can be controlled within ±1mm, which effectively solves the problem of production instability caused by paving belt deviation in the engineered wood industry and reduces production costs.

[0030] 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 illustrative of the principles of this 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 conveyor belt automatic deviation correction system comprising a conveyor belt (2) supported on an upper portion of a paving machine table (1), characterized in that: The paving machine platform (1) side is provided with a deviation rectifying device (3), the deviation rectifying device (3) includes lever drive mechanism at both sides of the conveying belt (2), the deviation rectifying wheel (8) connected by the lever drive mechanism drive end is used to clamp and pull the conveying belt (2) to rectify deviation, and the lever drive mechanism is driven and controlled by a deviation rectifying detection system.

2. A conveyor belt automatic deviation correction system according to claim 1, characterized in that: The lever drive mechanism includes a support column (4), a crossbar (5) is connected to the upper part of the support column (4), one side of the lower part of the crossbar (5) is hingedly fixed with a lever (7) through a gas cylinder (6), the middle part of the lever (7) is hingedly fixed with the support column (4), and the other end of the lever (7) is rotatably supported with a deviation rectifying wheel (8) at the upper part of the edge of the conveying belt (2).

3. A conveyor belt automatic deviation correction system according to claim 2, characterized in that: A supporting wheel (9) supporting the bottom edge of the conveying belt (2) is arranged directly below the deviation rectifying wheel (8), and the supporting wheel (9) is installed at the end of the connecting rod of the side end of the support column (4).

4. The conveyor belt automatic deviation correction system of claim 1, wherein: The deviation rectifying detection system includes a poking wheel (11) at both sides of the conveying belt (2), the poking wheel (11) is connected with a poking rod of a corresponding angle displacement sensor (12), and the angle displacement sensor (12) is installed on the side of the support column (4) through a connecting rod (13).

5. A conveyor belt automatic deviation correction system according to claim 4, characterized in that: The angle displacement sensors (12) at both sides of the conveying belt (2) are electrically connected with a PLC controller (14), and the PLC controller (14) is drivingly connected with a control valve (10) driving the gas cylinder (6) to act.

6. A conveyor belt automatic deviation correction system according to claim 5, characterized in that: A certain offset distance is arranged between the conveying belt (2) and the corresponding poking wheel (11) at both sides.

7. A conveyor belt automatic deviation correction system according to claim 3, characterized in that: The deviation rectifying wheel (8) and the supporting wheel (9) are rubber wheels.

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