Partitioned adsorption type high-precision conveying device

Abstract

This invention discloses a zoned adsorption-type high-precision conveying device, comprising: an edge-aligning device and a conveying device. The edge-aligning device is equipped with a leveling wall, and the side edges of the circuit board move against the leveling wall to the conveying device. The conveying device includes: a conveyor belt and an adjusting box. The conveyor belt is partially supported above the adjusting box, and multiple adsorption holes are provided on the conveyor belt. A vacuum chamber is provided inside the adjusting box. A vacuum pump is connected to the adsorption holes through the vacuum chamber, and the circuit board adheres to the conveyor belt through the adsorption holes and moves with the conveyor belt. By using the leveling wall on the edge-aligning device, the side edges of the circuit board slide along the wall surface, completing mechanical pre-alignment before entering the conveying device, effectively eliminating incoming angle deviations, and ensuring that each circuit board enters the subsequent station with a uniform and accurate posture.

Description

Technical Field

[0001] This application relates to the field of circuit board conveying devices, and in particular to a partitioned adsorption type high-precision conveying device. Background Technology

[0002] In AOI (Automated Optical Inspection) production testing, high-precision conveyor lines are responsible for the stable transport of PCB boards. Their operational stability directly determines the reliability and consistency of product inspection performance. AOI inspection relies on high-resolution cameras to scan and image the PCB board. Any shaking, slippage, offset, or speed fluctuations during transport will cause deviations between the image acquisition position and the preset inspection path, leading to misjudgments, missed judgments, or image blurring, severely affecting inspection accuracy and the final product quality assessment. These problems are particularly pronounced when PCB boards vary in size, thickness, or contain a mixture of hard and soft materials; if the conveyor system cannot adaptively adjust, these issues will become even more significant.

[0003] Traditional PCB conveyor systems primarily employ belt conveyors. Their flatness is affected by factors such as belt tension, roller parallelism, and long-term wear, making it difficult to maintain PCB stability during extended operation. Furthermore, the belt-PCB relationship relies on friction; in mixed-production scenarios with diverse product types and varying sizes, the frictional forces between PCBs of different sizes and weights and the belt differ significantly, resulting in poor conveyor synchronization and a tendency for boards to slide relative to each other, shift, or even pile up or fall off. In addition, traditional belt conveyors lack proactive lateral alignment and positioning capabilities, failing to meet the stringent requirements of high-precision AOI inspection for consistent PCB board positioning. Summary of the Invention

[0004] Based on the above problems, this invention proposes a partitioned adsorption-type high-precision conveying device for maintaining the stability of PCB boards during transportation and ensuring that PCB boards are uniformly grouped during transportation.

[0005] This invention is achieved through the following technical solution: A partitioned adsorption type high-precision conveying device includes: a aligning device and a transport device. The aligning device is provided with a regularizing wall, and one edge of the circuit board moves to the transport device by abutting the regularizing wall. The transport device includes a conveyor belt and an adjustment box. The conveyor belt is partially supported above the adjustment box. The conveyor belt is provided with multiple adsorption holes. The adjustment box is provided with a vacuum chamber. A vacuum pump is connected to the adsorption holes through the vacuum chamber. The circuit board is attached to the conveyor belt through the adsorption holes and moves with the conveyor belt.

[0006] Furthermore, the regulating box includes: a tray, a box body, and pump body pipes; The vacuum chamber is disposed inside the box, and the vacuum pump is connected to the vacuum chamber through the pump body pipe; The tray covers the box and supports the conveyor belt; the tray is provided with through holes, and the vacuum chamber is connected to the adsorption holes through the through holes; A sealing gasket is provided between the tray and the box body.

[0007] Furthermore, a plurality of partitions are spaced apart inside the box, and the partitions form a plurality of vacuum cavities inside the box; Each of the vacuum pumps is connected to a single vacuum chamber via the pump body pipe.

[0008] Furthermore, a first detection device for detecting the position of the circuit board is provided above the conveyor belt. The first detection device is used to turn on or off a single vacuum pump.

[0009] Furthermore, the edge-setting device includes: a conveying roller, a first leveling wall, and a pusher plate; The circuit board is placed on the conveyor roller, and the rotation of the conveyor roller moves the circuit board to the transport device. The first leveling wall is disposed at one end of the conveying roller; The pusher plate moves along the axial direction of the conveying roller and gradually approaches the first regularized wall until the pusher plate pushes the circuit board to abut against the first regularized wall.

[0010] Furthermore, the edge-aligning device includes a second detection device for detecting the size of the circuit board, the second detection device being disposed above the conveying roller.

[0011] Furthermore, the edge-aligning device includes: a detection plate, on which a third detection device for reducing the moving speed of the push plate is installed. The detection plate is mounted on the push plate and extends toward the first regularizing wall. The third detection device is installed on the side or below the detection plate.

[0012] Furthermore, the edge-aligning device includes: an insertion area, a bottom wall, a first roller, and a second alignment wall; The circuit board is placed in the edge-gathering device through the placement area; The first roller is disposed between the bottom wall and the second regularized wall; the circuit board is placed on the first roller, and the rotation of the first roller drives the circuit board to move; The first roller is inclined relative to the bottom wall, and the first roller drives the circuit board to move simultaneously toward the bottom wall and along the extension direction of the bottom wall.

[0013] Furthermore, the edge-aligning device is provided with several second regularizing walls at intervals to form multiple regularizing zones; A partition gap is provided between part of the second regularization wall and the bottom wall; the first roller pushes the circuit board through the partition gap or against the second regularization wall; the width of the partition gap decreases as the length of the second regularization wall from the insertion area increases.

[0014] The edge-aligning device is also provided with a push block, which pushes the circuit board into the alignment zone; Furthermore, a second roller is provided within the regularization zone; the first roller is inclined relative to the second regularization wall, and the second roller pushes the circuit board to move against the second regularization wall.

[0015] The beneficial effects of this invention are as follows: The aligning wall on the edge-aligning device allows the circuit board sides to slide along the wall surface, achieving mechanical pre-alignment before entering the transport device. This effectively eliminates incoming angle deviations and ensures that each circuit board enters the subsequent workstation with a uniform and accurate posture. The adsorption holes on the conveyor belt are connected to the vacuum pump through the vacuum chamber in the regulating box, allowing the circuit board to be adsorbed onto the surface of the conveyor belt by negative pressure during transport. Even during high-speed movement or start-stop, the circuit board can be reliably attached, preventing relative sliding or shifting and improving the stability of the transport process. Combining edge alignment with adsorption transport eliminates the need for manual alignment or additional clamps, resulting in a high degree of automation. The stable adsorption force can also avoid problems such as scratches and stacking caused by vibration or offset. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a three-dimensional structural diagram of a partitioned adsorption type high-precision conveying device according to one embodiment of the present invention; Figure 2 This is an exploded view of the transport device in this invention; Figure 3 This is a three-dimensional structural schematic diagram of the edge-returning device according to Embodiment 3 of the present invention; Figure 4 This is a schematic diagram of the positional structure of the settling device and the transport device in Embodiment 4 of the present invention; Figure 5 for Figure 4 Enlarged view of point A in the middle; Figure 6This is a design drawing of the PCB AOI inspection machine of the present invention; Figure 7 This is a physical image of the PCB AOI inspection machine of the present invention.

[0018] in: 1. Transport device; 11. Conveyor belt; 111. Adsorption hole; 12. Adjustment box; 120. Box body; 121. Vacuum chamber; 122. Pallet; 1221. Through hole; 1222. Sealing gasket; 123. Partition plate; 124. Pump body pipeline; 125. First detection device; 2. Edge-setting device; 21a. First leveling wall; 22a. Conveying roller; 23a. Push plate; 24a. Second detection device; 25a. Detection plate; 26a. Third detection device; 21b. Second leveling wall; 22b. First roller; 23b. Second roller; 24b. Bottom wall; 25b. Placement area; 26b. Leveling area; 27b. Push block; 28b. Partition gap; 29b. Slide groove; 30. Protrusion. Detailed Implementation

[0019] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.

[0020] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0021] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0022] Please refer to Figure 1The present invention discloses a partitioned adsorption-type high-precision conveying device, comprising: an edge-aligning device 2 and a transport device 1. The edge-aligning device 2 is used to straighten the position of the circuit board. Specifically, the edge-aligning device 2 is provided with an alignment wall, and one edge of the circuit board abuts against the alignment wall and moves along the alignment wall. The alignment wall includes a first alignment wall 21a and a second alignment wall 21b. The transport device 1 is used to transport the positioned circuit board to the next unit (such as a testing unit or an assembly unit). The circuit board is loaded from the side of the edge-aligning device 2 away from the transport device 1 and unloaded from the side of the transport device 1 away from the edge-aligning device 2. The direction of movement of the circuit board during the entire transport process is from the edge-aligning device 2 to the transport device 1.

[0023] The transport device 1 includes a conveyor belt 11 and an adjustment box 12. The conveyor belt 11, driven by a motor, circulates around the adjustment box 12. The conveyor belt 11 is planar on top of the adjustment box 12, and the circuit board is placed on the conveyor belt 11 for transport. The adjustment box 12 contains multiple vacuum chambers 121, and the conveyor belt 11 has suction holes 111 communicating with the vacuum chambers 121. During transport, a vacuum pump connected to the vacuum chambers 121 operates, generating negative pressure on the conveyor belt 11 through the suction holes 111, increasing the friction between the circuit board and the conveyor belt 11. Compared to existing technologies, the circuit board is effectively fixed to the conveyor belt 11 due to the negative pressure, preventing it from shifting during transport. The circuit board is already positioned in the edge-aligning device 2 before being placed in the transport device 1. Therefore, the coordinated operation of the edge-aligning device 2 and the transport device 1 ensures that the circuit board moves linearly along a fixed position when transported to the next unit, without rotation or offset, meeting the high-precision AOI inspection requirements for PCB board position consistency. The PCB board in the entire invention is the circuit board. The length direction of the vacuum cavity 121 is parallel or perpendicular to the movement direction of the circuit board in the area corresponding to the transport device 1. Negative pressure is generated only in the area corresponding to the transport device 1, that is, the circuit board is only adsorbed after the edge positioning is completed.

[0024] Please refer to Figure 2 The regulating box 12 includes: a tray 122, a box body 120, and a pump body pipe 124.

[0025] The tray 122 is located above the housing 120, that is, the tray 122 is the upper surface of the regulating box 12, and the tray 122 is located between the conveyor belt 11 and the housing 120. The tray 122 is a smooth metal plate, and the tray 122 directly contacts the conveyor belt 11 in a supporting manner to reduce the friction between the leather or rubber conveyor belt 11 and the tray 122. The tray 122 is provided with a through hole 1221, and the vacuum chamber 121, the through hole 1221 and the adsorption hole 111 are connected.

[0026] The vacuum chamber 121 is located inside the housing 120, and the vacuum pump is connected to the vacuum chamber 121 through the pump body pipe 124.

[0027] The tray 122 covers the housing 120 and seals the vacuum chamber 121 from the upper opening of the housing 120, so that the vacuum chamber 121 is connected to the adsorption hole 111 only through the through hole 1221. A sealing gasket 1222 is provided between the tray 122 and the housing 120 to prevent insufficient sealing from causing the negative pressure in the vacuum chamber 121 to fail to reach the preset value.

[0028] In one feasible embodiment of the present invention, a plurality of partitions 123 are spaced apart inside the housing 120, and the partitions 123 form a plurality of vacuum chambers 121 within the housing 120; a single vacuum pump is connected to a single vacuum chamber 121 through a pump body pipe 124. The purpose of connecting a single vacuum pump to a single vacuum chamber 121 is to achieve zoned adsorption and transport on the conveyor belt 11. Preferably, for rigid PCBs, the output power of the vacuum pump is increased to increase the adsorption force on the rigid PCBs on the conveyor belt 11 and prevent displacement of the rigid PCBs. For flexible PCBs, the output power of the vacuum pump is decreased to reduce the adsorption force on the flexible PCBs on the conveyor belt 11 and prevent deformation of the flexible PCBs.

[0029] Figure 6 This is a design drawing of the PCB AOI inspection machine of the present invention. Figure 7 To and Figure 6 The corresponding physical image shows that the whole machine integrates a feeding module, a dust removal module, an AOI detection module, a laser marking module, a plate output module, and the partitioned adsorption high-precision conveying device of the present invention, which connects different modules in series.

[0030] Example 1 Vacuum chambers 121 are arranged sequentially perpendicular to the conveying direction of the conveyor belt 11, i.e. Figure 2 The conveyor belt 11 in the vacuum chamber 121 carries the circuit board along the width direction of the vacuum chamber 121, which is the direction from one vacuum chamber 121 to another.

[0031] In this structure, each vacuum chamber 121 corresponds to a partition, and each partition only performs adsorption processing on the circuit board above it. This structure is designed for the simultaneous transport of multiple circuit boards in multiple rows.

[0032] Example 2 Vacuum chambers 121 are arranged sequentially along the conveying direction of the conveyor belt 11, that is... Figure 2 The conveyor belt 11 in the vacuum cavity 121 carries the circuit board along its length.

[0033] In this structure, multiple vacuum chambers 121 are linked throughout the entire conveying process of the circuit board. When the circuit board is transported above a designated vacuum chamber 121, the vacuum pump corresponding to the previously passed vacuum chamber 121 stops working, and the vacuum pump corresponding to the current vacuum chamber 121 starts working. In the prior art, this process can be achieved by setting photoelectric sensors on both sides of the conveyor belt 11 to control the opening and closing of the vacuum pump. When the photoelectric sensor detects the circuit board, it can be determined that the circuit board is above the vacuum chamber 121, and the vacuum pump is turned on for adsorption; when the photoelectric sensor fails to detect the circuit board, it means that the circuit board has not reached or has already passed above the current vacuum chamber 121, and the vacuum pump is turned off. This structure is for the transportation of a single or multiple circuit boards in a single row. Compared with multiple vacuum chambers 121 working simultaneously, the mode of single vacuum chambers 121 working sequentially can effectively reduce the friction between the tray 122 and the conveyor belt 11, reduce the working time of the vacuum pump, improve the service life of the vacuum pump, and reduce the overall energy consumption of the device.

[0034] A first detection device 125 for detecting the position of the circuit board is provided above the conveyor belt 11. The first detection device 125 is used to turn on or off a single vacuum pump. The first detection device 125 can be any one or any combination of photoelectric sensors, capacitive proximity switches, and ultrasonic sensors. The first detection device 125 is electrically connected to a PLC controller. The PLC controller controls the opening and closing of the vacuum pump and the power to generate negative pressure. The specific connection and control methods can be set by those skilled in the art using existing technology, and will not be described in detail in this invention.

[0035] The edge-aligning device 2 of this invention is used to position and straighten the circuit boards placed on it. After the circuit boards are placed on the edge-aligning device 2, they are pushed laterally and transported forward during transportation. The forward transport direction is from the edge-aligning device 2 towards the transport device 1. The lateral pushing causes one edge of the circuit board to abut against the alignment wall. Because the alignment wall is fixed along the forward transport direction, it can be ensured that after the circuit board passes through the edge-aligning device 2, all designated side edges of the circuit board are located on the same straight line, thus achieving alignment and positioning of the circuit board.

[0036] Example 3 Please refer to Figure 3 The edge-aligning device 2 includes a conveying roller 22a, a first leveling wall 21a, and a pusher plate 23a. The conveying roller 22a is perpendicular to the first leveling wall 21a and the pusher plate 23a, and the first leveling wall 21a and the pusher plate 23a are parallel to each other. A circuit board is placed on the conveying roller 22a, and the rotation of the conveying roller 22a moves the circuit board to the transport device 1. The first leveling wall 21a is located at one end of the conveying roller 22a.

[0037] The conveyor roller 22a has the same rolling direction as the conveyor belt 11, and the conveyor roller 22a is used to transport the circuit board placed on it to the transport device 1.

[0038] The pusher plate 23a moves axially along the conveyor roller 22a, gradually approaching the first leveling wall 21a located at one end of the axis of the conveyor roller 22a. During the approach, the pusher plate 23a pushes the circuit board above the conveyor roller 22a until it abuts against the first leveling wall 21a. Under the constraint of the pusher plate 23a and the first leveling wall 21a, that is, the pusher plate 23a and the first leveling wall 21a clamp the circuit board from both sides, so that as the circuit board moves forward with the rotation of the conveyor roller 22a, one edge of the circuit board always remains against the first leveling wall 21a.

[0039] The edge-aligning device 2 includes a second detection device 24a for detecting the size of the circuit board. The second detection device 24a is disposed above the conveying roller 22a and is used to detect the size and position of the circuit board.

[0040] In one feasible embodiment of the present invention, a plurality of first straightening walls 21a and push plates 23a may be provided on the conveying roller 22a, so that the edge-strapping device 2 can process the straightening and transporting of circuit boards in multiple rows simultaneously.

[0041] In a preferred embodiment of Example 3, the edge-aligning device 2 includes a detection plate 25a, on which a third detection device 26a is mounted to reduce the moving speed of the push plate 23a. The detection plate 25a is mounted on the push plate 23a and extends towards the first leveling wall 21a. The third detection device 26a is installed on the side or below the detection plate 25a. When the third detection device 26a does not detect the circuit board, the push plate 23a moves towards the first leveling wall 21a at a relatively fast speed to quickly approach the circuit board. When the third detection device 26a detects the circuit board, it indicates that the push plate 23a is pushing the circuit board towards the first leveling wall 21a. To prevent the push plate 23a from damaging the circuit board if it fails to stop in time after hitting the first leveling wall 21a, the third detection device 26a is connected to the drive device of the push plate 23a. When the third detection device 26a detects the circuit board, it slows down the moving speed of the push plate 23a, so that the push plate 23a can stop in time while the circuit board is being edge-aligned. The drive device for push plate 23a is a cylinder. The piston rod of the cylinder is connected to push plate 23a. When the piston rod extends, it drives push plate 23a to move closer to the first regularized wall 21a; when the piston rod retracts, it drives push plate 23a to move away from the first regularized wall 21a. The third detection device 26a is electrically connected to the signal input terminal of the PLC controller, and the signal output terminal of the PLC controller is electrically connected to the solenoid valve. An air pipe connects the working port of the solenoid valve to the air port of the cylinder. The PLC controller sends an electrical signal to the solenoid valve coil. The energized solenoid valve coil generates magnetic force to push the valve core to move, changing the air circuit connection state. Thus, the air circuit is switched according to the electrical signal, and compressed air is used to drive the piston rod to extend or retract. The drive device for push plate 23a can also be a servo motor or other structure to allow push plate 23a to stay in any position.

[0042] Example 4 Please refer to Figure 4 The edge-aligning device 2 includes: an insertion area 25b, a bottom wall 24b, a first roller 22b, and a second alignment wall 21b.

[0043] The placement area 25b is used by the operator to place the circuit board into the edge-aligning device 2. The first roller 22b is located between the bottom wall 24b and the second alignment wall 21b. When the circuit board is placed in the placement area 25b, it is supported by the first roller 22b. When the first roller 22b rotates, it drives the circuit board to move within the edge-aligning device 2.

[0044] The axis of the first roller 22b is inclined relative to the bottom wall 24b. Therefore, when the first roller 22b rolls, it pushes the circuit board to move obliquely: the circuit board moves closer to the bottom wall 24b and simultaneously moves along the extension direction of the bottom wall 24b. When the circuit board has reached the bottom wall 24b, it moves forward against the bottom wall 24b. The angle between the axis of the first roller 22b and the bottom wall 24b ranges from 30 to 60 degrees; this embodiment uses an angle of 45 degrees as an example.

[0045] like Figure 4 As shown in the above embodiment, the edge-aligning device 2 is provided with a plurality of second alignment walls 21b, which are parallel to each other and perpendicular to the bottom wall 24b. The plurality of second alignment walls 21b are spaced apart to form a plurality of alignment zones 26b, which are the areas between two adjacent alignment walls 21b. The distance between each second alignment wall 21b and the bottom wall 24b is different: the distance between the second alignment wall 21b farther from the insertion area 25b and the bottom wall 24b is shorter, i.e., the farther the second alignment wall 21b is from the insertion area 25b, the closer its end is to the bottom wall 24b. The second alignment wall 21b farthest from the insertion area 25b is detachably connected to the bottom wall 24b or integrally formed. A gap exists between some of the second alignment walls 21b and the bottom wall 24b; this gap is a partition gap 28b.

[0046] During the movement of the circuit board against the bottom wall 24b, the partition gaps 28b it passes through vary depending on the width of the circuit board. When the width of the circuit board is less than the partition gap 28b, the first roller 22b drives the circuit board through the partition gap 28b to the next partition gap 28b, and then the push block 27b pushes the circuit board into the corresponding regularization area 26b. When the width of the circuit board is greater than the partition gap 28b, one edge of the circuit board is against the bottom wall 24b, and the other edge abuts against the second regularization wall 21b. At this time, the circuit board stays in the regularization area 26b.

[0047] like Figures 4-5 As shown, a push block 27b is provided between two adjacent partition gaps 28b. The push block 27b is inserted into three sliding grooves 29b. A protrusion 30 is provided on the bottom of the push block 27b, and the protrusion 30 is inserted into the sliding groove 29b. A screw and nut mechanism is used to drive the push block 27b, that is, the output shaft of the motor is connected to the screw, the motor drives the screw to rotate, and the nut is rigidly connected to the push block 27b. Ball bearings are embedded in the rotating groove of the screw. When the screw rotates, the ball bearings roll along the spiral track, and the push nut and push block 27b move linearly along the direction of the sliding groove 29b. The push block 27b starts from the bottom wall 24b and moves towards the regularization zone 26b. During the movement, the push circuit board moves away from the bottom wall 24b, abuts against the second regularization wall 21b, and moves into the regularization zone 26b.

[0048] To prevent the circuit board from rotating or moving laterally within the regularization area 26b, a plurality of second rollers 23b are provided within the regularization area 26b. The axes of the first roller 22b and the axes of the second roller 23b are both inclined relative to the second regularization wall 21b, but the inclination direction of the second roller 23b is different from that of the first roller 22b. The second rollers 23b push the circuit board against the second regularization wall 21b and move it along the second regularization wall 21b.

[0049] Compared to Example 3, the edge-aligning device 2 in Example 4 performs an automatic screening function. This invention drives the circuit board through a combination of a push plate 23a and tilting rollers, causing the circuit board to automatically align its edges and enter the regularization area 26b.

[0050] The edge-aligning device 2 uses a leveling wall to slide the circuit board's sides along the wall, achieving mechanical pre-alignment before entering the transport device 1. This effectively eliminates incoming angle deviations, ensuring each circuit board enters the subsequent workstation with a uniform and accurate posture. The suction holes 111 on the conveyor belt 11 are connected to a vacuum pump via the vacuum chamber 121 inside the regulating box 12. This allows the circuit board to be suctioned onto the conveyor belt surface by negative pressure during transport. Even during high-speed movement or start-stop, the circuit board remains reliably attached, preventing relative sliding or shifting and improving the stability of the transport process. Combining edge alignment with suction transport eliminates the need for manual alignment or additional clamps, resulting in a high degree of automation. The stable suction force also avoids scratches and stacking caused by vibration or offset.

[0051] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A partitioned adsorption type high-precision conveying device, characterized in that, include: The circuit board has a straightening wall and a transport device. The straightening wall is provided with a regularizing wall. One side edge of the circuit board moves to the transport device by abutting the regularizing wall. The transport device includes: a conveyor belt and an adjustment box, the conveyor belt is partially supported above the adjustment box, the conveyor belt is provided with a plurality of suction holes, and the adjustment box is provided with a vacuum chamber; The vacuum pump is connected to the adsorption hole through the vacuum chamber, and the circuit board is attached to the conveyor belt through the adsorption hole and moves with the conveyor belt.

2. The partitioned adsorption type high-precision conveying device according to claim 1, characterized in that, The regulating box includes: a tray, a box body, a pump body, and pipelines; The vacuum chamber is disposed inside the box, and the vacuum pump is connected to the vacuum chamber through the pump body pipe; The tray covers the box and supports the conveyor belt; the tray is provided with through holes, and the vacuum chamber is connected to the adsorption holes through the through holes; A sealing gasket is provided between the tray and the box body.

3. The partitioned adsorption type high-precision conveying device according to claim 2, characterized in that, The box is provided with several partitions at intervals, and the partitions form several vacuum cavities inside the box. Each of the vacuum pumps is connected to a single vacuum chamber via the pump body pipe.

4. The partitioned adsorption type high-precision conveying device according to claim 3, characterized in that, A first detection device for detecting the position of the circuit board is provided above the conveyor belt. The first detection device is used to turn a single vacuum pump on or off.

5. The partitioned adsorption type high-precision conveying device according to claim 1, characterized in that, The edge-setting device includes: a conveying roller, a first leveling wall, and a pusher plate; The circuit board is placed on the conveyor roller, and the rotation of the conveyor roller moves the circuit board to the transport device. The first leveling wall is disposed at one end of the conveying roller; The pusher plate moves along the axial direction of the conveying roller and gradually approaches the first regularized wall until the pusher plate pushes the circuit board to abut against the first regularized wall.

6. The partitioned adsorption type high-precision conveying device according to claim 5, characterized in that, The edge-aligning device includes a second detection device for detecting the size of the circuit board, which is positioned above the conveyor roller.

7. The partitioned adsorption type high-precision conveying device according to claim 5, characterized in that, The edge-aligning device includes: a detection plate, on which a third detection device for reducing the moving speed of the push plate is installed. The detection plate is mounted on the push plate and extends toward the first regularized wall. The third detection device is installed on the side or below the detection plate.

8. The partitioned adsorption type high-precision conveying device according to claim 1, characterized in that, The edge-aligning device includes: an insertion area, a bottom wall, a first roller, and a second alignment wall; The circuit board is placed in the edge-gathering device through the placement area; The first roller is disposed between the bottom wall and the second regularized wall; the circuit board is placed on the first roller, and the rotation of the first roller drives the circuit board to move; The first roller is inclined relative to the bottom wall, and the first roller drives the circuit board to move simultaneously toward the bottom wall and along the extension direction of the bottom wall.

9. The partitioned adsorption type high-precision conveying device according to claim 8, characterized in that, The edge-aligning device is provided with several second regularizing walls at intervals, forming multiple regularizing zones; A partition gap is provided between part of the second regularization wall and the bottom wall; the first roller pushes the circuit board through the partition gap or against the second regularization wall; the width of the partition gap decreases as the distance between the second regularization wall and the insertion area increases; The edge-aligning device is also equipped with a push block, which pushes the circuit board into the alignment zone.

10. The partitioned adsorption type high-precision conveying device according to claim 9, characterized in that, A second roller is provided within the regularization zone; the first roller is inclined relative to the second regularization wall, and the second roller pushes the circuit board to move against the second regularization wall.

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