CN213651166U

CN213651166U - Conveying mechanism

Info

Publication number: CN213651166U
Application number: CN202021627560.7U
Authority: CN
Inventors: 陈鸣; 黄祖理
Original assignee: Shenzhen Eagle Eye Online Electronics Technology Co ltd
Current assignee: Shenzhen Eagle Eye Online Electronics Technology Co ltd
Priority date: 2020-08-06
Filing date: 2020-08-06
Publication date: 2021-07-09
Anticipated expiration: 2030-08-06

Abstract

The embodiment of this application provides a transport mechanism, transport mechanism is used for conveying the plate, includes: a frame; the first conveying assembly comprises a first clamp seat and at least one first clamp arranged on the first clamp seat, the two opposite ends of the first clamp seat are connected with the rack in a sliding mode, and the first clamp is used for clamping the plate; the second conveying assembly comprises a second clamp seat and at least one second clamp arranged on the second clamp seat, and two opposite ends of the second clamp seat are connected with the rack in a sliding manner; the sliding rail of the second clamp seat and the sliding rail of the first clamp seat are arranged at intervals along a first direction, and the first direction is crossed with or vertical to the sliding direction of the first clamp seat; the second clamp is used for clamping the plate, the second clamp is arranged on one side, close to the first clamp seat, of the second clamp seat, and the first clamp is arranged on one side, close to the second clamp seat, of the first clamp seat. The application provides a transport mechanism can accurate control the transfer rate of panel.

Description

Conveying mechanism

Technical Field

The application relates to the field of circuit board detection equipment, in particular to a conveying mechanism.

Background

In the process of detecting and processing the Printed Circuit Board (PCB)/Flexible Printed Circuit Board (FPC), glass Board, paperboard and other boards, the boards need to be conveyed, and how to design a conveying mechanism improves the conveying efficiency of the boards, which is a technical problem to be solved.

SUMMERY OF THE UTILITY MODEL

The application provides a transport mechanism that can improve the conveying efficiency of plate.

The embodiment of this application provides a transport mechanism for conveying plate spare includes:

a frame;

the first conveying assembly comprises a first clamp seat and at least one first clamp arranged on the first clamp seat, two opposite ends of the first clamp seat are connected with the rack in a sliding mode, and the first clamp is used for clamping the plate; and

the second conveying assembly comprises a second clamp seat and at least one second clamp arranged on the second clamp seat, and two opposite ends of the second clamp seat are connected with the rack in a sliding mode; the sliding rail of the second clamp seat and the sliding rail of the first clamp seat are arranged at intervals along a first direction, and the first direction is intersected with or perpendicular to the sliding direction of the first clamp seat; the second clamp is used for clamping the plate, the second clamp is arranged on one side, close to the first clamp seat, of the second clamp seat, and the first clamp is arranged on one side, close to the second clamp seat, of the first clamp seat.

According to the conveying mechanism provided by the embodiment of the application, the first conveying assembly slides along the rack through the first clamp seat, and the second conveying assembly slides along the rack through the second clamp seat; the first clamp seat is arranged on the side, close to the second conveying assembly, of the first clamp seat, the second clamp is arranged on the side, close to the first conveying assembly, of the second clamp seat, so that the first clamp and the second clamp are located at similar heights, in the process of clamping the plate, the distance between the first clamp and the second clamp in the first direction can be reduced, the plate can be clamped by the first clamp and the second clamp, the clamping time of the first conveying assembly and the second conveying assembly is saved, the clamping speed is increased, and the conveying efficiency of the conveying mechanism is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a conveying mechanism according to an embodiment of the present application.

Fig. 2 is a partially enlarged view of the transfer mechanism in fig. 1.

Fig. 3 is a schematic structural diagram of the first conveying assembly in fig. 2 clamping the circuit board.

Fig. 4 is a schematic structural view of the first jig of fig. 3.

Fig. 5 is a schematic structural view of the second conveying assembly in fig. 2 clamping the circuit board.

Fig. 6 is a schematic structural view of the second jig of fig. 5.

Fig. 7 is a schematic structural diagram of a conveying mechanism according to a second embodiment of the present application.

Fig. 8 is a partially enlarged view of the transfer mechanism of fig. 7.

Fig. 9 is a second enlarged view of a portion of the transfer mechanism of fig. 7.

Fig. 10 is a partially enlarged view of the first transfer assembly and the second transfer assembly of fig. 9.

Fig. 11 is a schematic structural view of the first conveying assembly in fig. 9 clamping the circuit board.

Fig. 12 is a schematic structural view of the first jig of fig. 11.

Fig. 13 is a schematic structural view of the second transfer module of fig. 9 clamping the circuit board.

Fig. 14 is a schematic structural view of the second jig of fig. 13.

The following are at least some of the reference numerals used in the drawings of the present application:

a circuit board-2000; a transport mechanism-600; a frame-601; a first side panel-603; a second side panel-605; a first rail-607; a second rail-609; a first transfer component-611; a first clamp mount-613; a first clamp-615; a movable cylinder-617; a cylinder block-619; a clamping cylinder-621; a clamp link-623; a clip bearing-625; a clamp movable plate-627; a clip securing plate-629; a clip presser-628; a floating joint-631; a cylinder moving plate 630; a second conveying assembly-633; a second clamp mount-635; a second jig-637; a first motor-641; a first belt-643; a first drive pulley-642; a first transmission axis-645; a second motor-646; a second belt-647; a second drive wheel-648; a second transfer shaft-649; a first clip-615 a; a second clip-615 b; a third motor-651; a third belt-653; a third drive wheel-655; a third clip-637 a; a fourth clip-637 b.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The embodiments listed in the present application may be appropriately combined with each other.

The embodiment of the application provides a transport mechanism 600 capable of improving transport efficiency, and the transport mechanism 600 can be used for transporting plates such as steel plates, paperboards, glass, printed circuit boards and flexible circuit boards, and of course, the transport mechanism 600 can also be used for transporting non-plate objects such as blocks and irregular shapes. The transport mechanism 600 may also be used in the logistics industry, for example, to pick up and transport express packages, etc. The transfer mechanism 600 will be described in detail below with reference to the drawings.

Referring to fig. 1, a transmission mechanism 600 according to an embodiment of the present application is illustrated by taking a transmission circuit board 2000 as an example. The transmission mechanism 600 includes, but is not limited to, a transmission line board 2000 applied to an optical inspection apparatus. The optical inspection apparatus is used to inspect the wiring board 2000 for the presence of defects, such as open, short, micro-short, copper, burrs, dirt, pin holes, chips, etc., that affect the performance of the wiring board. Therefore, the production good product of the circuit board is screened out. Of course, the transport mechanism 600 may also be used with a transport device or a detection device. Modifications and applications which may occur to those skilled in the art from the disclosure of the present application are within the scope of the present application.

For convenience of description, the present embodiment defines the "front stage" as the source structure in the transmission direction of the circuit board 2000. The "rear stage" is a removing structure in the transfer direction of the wiring board 2000. The embodiment of the application defines that one end of each mechanism connected with the front section is a feeding end, and defines that one end of each mechanism connected with the rear section is a discharging end.

For convenience of description, a direction in which the transfer mechanism 600 transfers the line plate 2000 is determined as an X-axis direction, and a direction perpendicular to the X-axis direction within the transfer plane of the line plate 2000 is a Y-axis direction. The optical detection device is disposed on a horizontal plane, and the height direction of the transfer mechanism 600 is defined as the Z-axis direction. The X-axis direction, the Y-axis direction and the Z-axis direction are vertical to each other.

Referring to fig. 1, the transfer mechanism 600 includes a frame 601, a first transfer module 611, a second transfer module 633 and a controller (not shown).

Referring to fig. 1, the frame 601 includes a first side plate 603 and a second side plate 605 disposed along opposite sides. The first side panel 603 and the second side panel 605 may be disposed in parallel or non-parallel arrangement.

Referring to fig. 1 and fig. 2, a pair of first guide rails 607 is disposed on the frame 601. The pair of first guide rails 607 may extend in the X-axis direction or approximately in the X-axis direction. A pair of first guide rails 607 are respectively provided on the first side plate 603 and the second side plate 605. The frame 601 is further provided with a pair of second guide rails 609. The pair of second guide rails 609 may extend in the X-axis direction or approximately in the X-axis direction. The pair of first guide rails 607 and the pair of second guide rails 609 may be arranged in the opposite direction along the Z-axis. A pair of first guide rails 607 and a pair of second guide rails 609 may also be arranged in the Z-axis forward direction. A pair of second guide rails 609 are provided on the first side plate 603 and the second side plate 605, respectively.

Referring to fig. 1 and 2, the first transfer assembly 611 is disposed on the frame 601. The first transfer assembly 611 may extend generally in the Y-axis direction. The first transfer module 611 is used to hold and transfer the circuit board 2000. The opposite ends of the first conveying assembly 611 are slidably connected to a pair of first guide rails 607, respectively. The first conveying assembly 611 can slide along the frame 601 under the driving of an external force to convey the circuit board 2000 from the front section of the conveying mechanism 600 to other structures (such as a blanking conveying mechanism, which will be described in detail later). Specifically, the first transmission assembly 611 may be driven by a precise high-speed transmission mechanism such as a motor, a ball screw, a linear motor, etc. to slidably connect the pair of first guide rails 607.

Referring to fig. 3 and 4, the first transfer assembly 611 includes a first fixture seat 613 and at least one first fixture 615 disposed on the first fixture seat 613. The first jig base 613 is disposed in the Y-axis direction. The opposite ends of the first clamp seat 613 are slidably connected to the frame 601. The first clamp 615 is used to clamp the board (i.e., the circuit board 2000).

Referring to fig. 1 and 2, the second conveying assembly 633 is disposed on the frame 601. The second conveying assembly 633 may extend generally in the Y-axis direction. The second transfer unit 633 is used to hold and transfer the circuit board 2000. A pair of second guide rails 609 are slidably connected to opposite ends of the second conveying assembly 633 respectively. The second conveying assembly 633 can slide along the frame 601 under the driving of external force to convey the circuit board 2000 from the front section of the conveying mechanism 600 to other structures (such as a blanking conveying mechanism). Specifically, the second conveying assembly 633 can be driven by a precise high-speed transmission mechanism such as a motor, a ball screw, a linear motor, etc. to slidably connect the pair of second guide rails 609. The second conveying assembly 633 is disposed in a first direction, staggered from the first conveying assembly 611. The first direction is perpendicular to the sliding direction of the second conveying assembly 633. Specifically, the first direction may be a Z-axis direction. The sliding direction of the first conveying assembly 611 and the sliding direction of the second conveying assembly 633 are both X-axis directions (including X-axis forward direction or X-axis reverse direction).

Referring to fig. 5 and 6, the second conveying assembly 633 includes a second fixture seat 635 and at least one second fixture 637 disposed on the second fixture seat 635. The second jig base 635 is disposed in the Y-axis direction. The opposite ends of the second clamp seat 635 are slidably connected to the frame 601. The sliding rail of the second jig block 637 (along the X-axis direction) and the sliding rail of the first jig block 613 (along the X-axis direction) are arranged at an interval in the first direction (Z-axis direction). The first direction intersects with or is perpendicular to the sliding direction of the first jig base 613. The second fixture 637 is configured to clamp the plate, the second fixture 637 is disposed on a side of the second fixture seat 635 close to the first fixture seat 613, and the first fixture 615 is disposed on a side of the first fixture seat 613 close to the second fixture seat 635.

The first conveying assembly 611 is arranged to be slidable along a pair of first guide rails 607 through a first clamp seat 613, and the second conveying assembly 633 is arranged to be slidable along a pair of second guide rails 609 through a second clamp seat 635, wherein the first guide rails 607 and the second guide rails 609 are arranged at intervals in a first direction; by disposing the first fixture 615 on the side of the first fixture seat 613 close to the second conveying assembly 633 and disposing the second fixture 637 on the side of the second fixture seat 635 close to the first conveying assembly 611, the first fixture 615 and the second fixture 637 are located at a similar height, so that the distance that the first fixture 615 and the second fixture 637 move in the first direction can be reduced in the process of clamping the circuit board 2000 by the first fixture 615 and the second fixture 637, that is, the first fixture 615 and the second fixture 637 can clamp the board, the clamping time of the first conveying assembly 611 and the second conveying assembly 633 can be saved, the clamping speed can be increased, and the conveying efficiency of the conveying mechanism 600 can be increased.

Alternatively, the first conveying assembly 611 and the second conveying assembly 633 may be driven by a belt-motor combination to slidably connect the first side plate 603 and the second side plate 605.

Optionally, the controller is connected to the motor driving the first conveying assembly 611 and the motor driving the second conveying assembly 633. The controller is used for controlling the first transmission assembly 611 and the second transmission assembly 633 to alternately transmit the circuit board 2000. The controller may be an integrated chip, and is disposed on a circuit board, which is fixed to the machine 601 or other positions of the optical detection device. The present application is not limited to the specific structure and location of the controller.

In this embodiment, referring to fig. 2, the transmission mechanism 600 further includes a first motor 641 (which is covered by the first side plate 603 in fig. 2, refer to fig. 8), at least one first transmission belt 643, at least two first transmission wheels 642 and a first transmission shaft 645. In the present embodiment, only two first transmission belts 643 and four first transmission wheels 642 are taken as an example for explanation, and the number of the first transmission belts 643 is not limited to two in the present application, and the number of the first transmission wheels 642 is four. Specifically, the first drive pulley 642 is a timing pulley. The first driving wheel 642 may be a pulley, a steel pulley, or the like. Specifically, the first belt 643 is a synchronous belt. The first transmission belt 643 may be a belt or a steel belt.

The first motor 641 is disposed on a side of the first side plate 603 facing away from the second side plate 605 to reduce interference with the processes of the first conveying assembly 611 and the second conveying assembly 633. Of course, in other embodiments, the position of the first motor 641 may also be disposed on a side of the second side plate 605 facing away from the first side plate 603. Of course, the first motor 641 may be replaced by another power assembly capable of driving the first transmission shaft 645 to rotate.

Referring to fig. 2, the first transmission shaft 645 is disposed along the Y-axis direction, most of the first transmission shaft 645 is disposed between the first side plate 603 and the second side plate 605, one end of the first transmission shaft 645 penetrates through the first side plate 603 and is directly or indirectly connected to the rotating shaft of the first motor 641, and the other end of the first transmission shaft 645 is rotatably connected to the second side plate 605. Thus, the first transmission shaft 645 can rotate under the driving of the first motor 641.

Referring to fig. 2, the first transmission shaft 645 may be disposed near the feeding end of the conveying mechanism 600, and may also be disposed near the discharging end of the conveying mechanism 600. In this embodiment, the first transmission shaft 645 is disposed near the discharging end of the conveying mechanism 600 to reduce interference with the clamping of the plate member at the feeding end of the conveying mechanism 600.

Referring to fig. 2, the first driving wheel 642 is disposed at one end of the first transmission shaft 645 connected to the first side plate 603, and the second first driving wheel 642 is disposed at a position of the first side plate 603 near the feeding end. The first driving wheel 642 and the second driving wheel 642 are axially arranged along the Y-axis direction, and both the first driving wheel 642 and the second driving wheel 642 can rotate relative to the first side plate 603.

Referring to fig. 2, both ends of the first driving belt 643 are mounted on the first driving wheel 642 and the second first driving wheel 642. When the first motor 641 drives the first transmission shaft 645 to rotate, the first transmission shaft 645 drives the first transmission wheel 642 to rotate, the first transmission wheel 642 drives the first transmission belt 643 to transmit, and the first transmission belt 643 also drives the second first transmission wheel 642 to rotate during transmission.

In this way, the rotation shaft of the first motor 641, the first transmission shaft 645, the two first transmission wheels 642, and the first transmission belt 643 rotate synchronously.

In one embodiment, a first driving wheel 642 and a first driving belt 643 may be disposed on both sides of the first side plate 603 and the second side plate 605. In other words, the first motor 641 transmits the power for moving the first transmission assembly 611 at both ends of the first transmission assembly 611.

Specifically, on the basis that the first driving wheel 642, the second first driving wheel 642 and the first driving belt 643 are disposed on the side of the first side plate 603, the second first driving wheel 642, the third first driving wheel 642 and the fourth first driving wheel 642 are disposed on the side of the second side plate 605. Although the second, third and fourth

first driving wheels

642, 642 and 642 are shielded by the second side plate 605, the arrangement of the second, third and fourth

first driving wheels

642 and 642 can refer to the arrangement of the first driving wheel 642, the first driving wheel 642 and the second first driving wheel 642.

Specifically, the third first driving wheel 642 is disposed at one end of the first transmission shaft 645 connected to the first side plate 603, and the fourth first driving wheel 642 is disposed at a position of the first side plate 603 near the feeding end. The third first driving wheel 642 and the fourth first driving wheel 642 are axially arranged along the Y-axis direction, and the third first driving wheel 642 and the fourth first driving wheel 642 are rotatable relative to the first side plate 603.

Specifically, both ends of the second first driving belt 643 are mounted on the third first driving wheel 642 and the fourth first driving wheel 642. When the first motor 641 drives the first transmission shaft 645 to rotate, the first transmission shaft 645 drives the third first transmission wheel 642 to rotate, the third first transmission wheel 642 drives the second first transmission belt 643 to transmit, and the second first transmission belt 643 also drives the fourth first transmission wheel 642 to rotate during transmission.

In this way, the rotation shaft of the first motor 641, the first transmission shaft 645, the four first transmission wheels 642, and the two first transmission belts 643 rotate synchronously.

The first motor 641 drives the first transmission belt 643 to move in a clockwise direction or a counterclockwise direction. The first transmission assembly 611 is connected to the first transmission belt 643 to move along the X-axis forward direction or the X-axis reverse direction under the driving of the first motor 641. Opposite ends of the first transmission assembly 611 are respectively connected to two first transmission belts 643, so that the first motor 641 can control the speed of the first transmission assembly 611 with high precision through the first transmission shaft 645, the first transmission wheel 642 and the first transmission belts 643.

Particularly, in an application scenario requiring extremely precise transmission speed, for example, in the optical detection device of the circuit board 2000, if the speed of the circuit board 2000 during the detection process is not matched with the speed detected by the optical detection device, the image acquired by the optical detection device may be blurred, and further, problems such as detection failure and inaccuracy may occur.

Based on the above application scenarios, the first transmission assembly 611 can be controlled to transmit at a constant speed or an actual speed with high precision from the required theoretical speed by using the first motor 641, the first transmission shaft 645, the first transmission wheel 642 and the first transmission belt 643. When the first transmission assembly 611 transmits at a constant speed or an actual speed and the required theoretical speed with high accuracy, the circuit board 2000 also transmits at the constant speed or the actual speed and the required theoretical speed with high accuracy, so that the speed of the circuit board 2000 in the detection process is matched with the speed detected by the optical detection device, the image acquired by the optical detection device is clear, and the detection result is accurate.

In another embodiment, as compared to the previous embodiment, the first transmission shaft 645 may not be provided, and the first transmission wheel 642 and the first transmission belt 643 may be provided only on the side of the first side plate 603 or the second side plate 605 to provide a driving force for moving at one end of the first transmission assembly 611, so that the transmission of the first transmission assembly 611 is realized by the clamp seat of the first transmission assembly 611 sliding along the first side plate 603 and the second side plate 605. In other words, the first motor 641 imparts motive force to the movement of the first transferring assembly 611 at one end of the first transferring assembly 611. The implementation mode has the characteristics of simple structure and low cost.

By providing the first driving wheel 642 and the first driving belt 643 at both sides of the first side plate 603 and the second side plate 605, the loss of the driving efficiency can be minimized, and the problem of the hysteresis of the power transmission only by the clamp seat due to the large span at the left and right sides can be effectively avoided, compared with the case where the first driving wheel 642 and the first driving belt 643 are provided at one side. Especially in the optical detection process, the position of the plate head needs to be kept synchronous at the moment of detection starting, if transmission delay occurs, the problem that two clamps or a plurality of clamps are asynchronous is caused, and further abnormity occurs on a detected image.

Referring to fig. 2, the transmission mechanism 600 further includes a second motor 646 (which is covered by the first side plate 603 in fig. 2, see fig. 8), at least one second belt 647, and at least two second driving wheels 648, for driving the second transmission assembly 633 to move. The transfer mechanism 600 may also include a second drive shaft 649. The position of the second transmission shaft 649 may be similar, and specifically, the second transmission shaft 649 and the first transmission shaft 645 are arranged in the Z-axis direction. The second motor 646 may be located close to the first motor 641, and both are located on a side of the first side plate 603 away from the second side plate 605. Of course, the second motor 646 could also be located on the side of the second side plate 605 that is distal from the first side plate 603. Specifically, the second drive wheel 648 is a timing pulley. The second drive wheel 648 may be a pulley, a steel pulley, or the like. Specifically, the second belt 647 is a timing belt. The second belt 647 may be a belt or a steel belt, etc.

One end of a second transmission shaft 649 penetrates through the first side plate 603 and is electrically connected to the second motor 646, and the other end of the second transmission shaft 649 is rotatably connected to the second side plate 605. The assembly and transmission of the second transmission wheel 648 and the second transmission shaft 649 can refer to the assembly and transmission of the first transmission wheel 642 and the first transmission shaft 645. The assembly and transmission of the second driving wheel 648 and the second driving belt 647 can refer to the assembly and transmission of the first driving wheel 642 and the second driving belt 647.

In this way, the rotation shaft of the second motor 646, the second transmission shaft 649, the second transmission wheel 648 and the second transmission belt 647 are synchronously rotated, so as to realize the movement of the second transmission assembly 633 along the positive direction or direction of the X axis. Because the second transmission component 633 also transmits in the mode of a motor, a transmission shaft, a transmission wheel and a transmission belt, the second transmission component 633 can be controlled to transmit at a constant speed or an actual speed and a required theoretical speed with high precision, and the circuit board 2000 also transmits at the constant speed or the actual speed and the required theoretical speed with high precision, so that the speed of the circuit board 2000 in the detection process is matched with the speed detected by the optical detection equipment, images acquired by the optical detection equipment are clear, and the detection result is accurate.

Further, a position signal such as a grating ruler, a magnetic grating ruler or other encoders may be disposed on the first side plate 603 and/or the second side plate 605 to read the positions of the first conveying assembly 611 and the second conveying assembly 633 in the X direction in real time, and to feed back the position information to the detection mechanism or the controller.

Referring to fig. 2, the first conveying assembly 611 is an upper conveying assembly, and the second conveying assembly 633 is a lower conveying assembly; alternatively, the first conveying assembly 611 is a lower conveying assembly, and the second conveying assembly 633 is an upper conveying assembly. The "upper transfer unit" refers to a transfer unit that is located on the ground surface and is relatively far from the ground surface when the transfer mechanism 600 is located on the ground surface. The "lower conveyance unit" refers to a conveyance unit that is located relatively close to the floor surface when the conveyance mechanism 600 is installed on the floor surface. The first transmission component 611 is taken as an upper transmission component in the embodiment of the present application. The second conveying assembly 633 is illustrated as a lower conveying assembly.

According to the transmission mechanism 600 provided by the embodiment of the application, the first transmission component 611 and the second transmission component 633 are arranged to alternately transmit the circuit board 2000 with the front section pressed by the transmission mechanism 600 to the blanking conveying mechanism under the action of the controller, so that the transmission efficiency of the circuit board 2000 can be effectively improved.

Of course, the number of the first conveying assemblies 611 is not specifically limited in the present application, in other words, the number of the first conveying assemblies 611 may be plural, and the number of the second conveying assemblies 633 is not specifically limited in the present application, in other words, the number of the second conveying assemblies 633 may be plural.

At present, the traditional conveying mechanism for conveying circuit boards generally adopts a mode of combining an upper roller and a lower roller or a mode of combining an upper belt and a lower belt. For a roller-type transport mechanism, the disadvantages include at least the following: 1. authenticity and efficiency of the image: when the circuit board enters the image acquisition area through the transmission of a set of rollers, the head of the circuit board instantly enters the next set of rollers, so that the transmission of the circuit board is suddenly blocked, and the phenomenon of slipping occurs. The image compression is shown on the collected image, which affects the detection result and causes the false judgment and the missing detection of the circuit board detection. When the circuit board just leaves the image acquisition area, the board tail suddenly leaves a group of rollers, the resistance of the circuit board suddenly decreases at the moment, the transmission speed suddenly increases, and the phenomenon of slipping also occurs. The collected image shows image stretching, which affects the detection result and causes circuit board detection misjudgment and missing detection. Therefore, the acquired image is not real, and the detection efficiency is influenced. 2. The roller processing requirements and the cost are as follows: for the roller type transmission, according to the parameters of the detection camera and the detection precision requirement, the calculated requirement of the equipment on the full-run-out tolerance of the roller processing is very high, the standard specification size of an industrial circuit board is 28 inches, the roller processing with the length is very difficult to achieve the processing precision run-out, and the cost is very high (for example, the roller size: the diameter is 45mm, the length is 950mm, the full-run-out tolerance requirement is within 0.01mm, the full-run-out tolerance requirement is very difficult to process and the cost is very high). 3. Service life aspect: after the roller is used for a long time, the roller is affected by stress deformation generated by load and the roller, the full run-out tolerance is gradually increased, the roller is scrapped and needs to be replaced, and the service life is short. 4. Performance stability: when the rollers are conveyed, the upper roller and the lower roller move in a tangent mode, at the moment, the roller group can only press one line and is affected by the material of the circuit board, the unevenness of the board surface and the like, the acquisition area is uneven, the image blurring occurs, the detection result is affected, and the performance is unstable. Moreover, because the environment of a circuit board manufacturing workshop is severe, the roller can convey the circuit board for a long time, so that more dust particles are adhered to the surface of the roller, the surface of the circuit board is polluted, the detection image is misjudged, and the performance stability is poor. 5. Maintenance and debugging difficulties: the roller group that upper and lower cylinder is constituteed, the assembly requirement is very high, and the full run-out tolerance and the depth of parallelism requirement of upper and lower cylinder are within 0.01mm to there is fixed requirement in the clearance of upper and lower cylinder, and the debugging is fairly complicated, has brought very big difficulty for maintenance and debugging.

For belt-type transfer mechanisms, the drawbacks include at least the following: 1. performance stability: influenced by circuit board self material and face unevenness etc. be difficult to guarantee the roughness when the conveying on the belt, add conveyer itself and also be uneven, lead to the regional unevenness of collection, the image appears fuzzy, influences the testing result, the performance is unstable. 2. Service life aspect: the belt material is polyurethane belt or the belt of other materials, and long-time and circuit board friction conveying pass the board, lead to the belt wearing and tearing easily, often need change, life is short. 3. Compatibility: the belt has flexible tensor, leads to upper and lower two sets of belts can't the tensioning contact, receives the influence of circuit board self material, and most circuit boards have the phenomenon of local warpage, and the circuit board that conveys thinly is unable contact transmission, consequently has the limitation, can not satisfy the demand of most customer's commonality product, and the compatibility is low. 4. Maintenance and debugging difficulties: the gap between the upper belt and the lower belt of the equipment acquisition section is small, the debugging of the distance and the parallelism between the two belts is quite complex, and great difficulty is brought to the maintenance and the debugging.

In this embodiment, by disposing the first conveying assembly 611 and the second conveying assembly 633 on the conveying mechanism 600, the first conveying assembly 611 and the second conveying assembly 633 both clamp the circuit board 2000, and then the motor drives the first conveying assembly 611 and the second conveying assembly 633 to move along the Y axis, so that the first conveying assembly 611 drives the circuit board 2000 to gradually get away from the front section of the conveying mechanism 600, and the second conveying assembly 633 drives the circuit board 2000 to gradually get away from the front section of the conveying mechanism 600. Compared with the conventional roller transmission or belt transmission, the conveying mechanism 600 provided by the embodiment of the application is driven by the clamping circuit board 2000 and the motor, and the motor can stably drive the conveying assembly (the conveying assembly comprises the first conveying assembly 611 and the second conveying assembly 633) to move along the Y-axis direction, so that the circuit board 2000 does not slide, and the conveying speed of the conveying assembly can be accurately controlled, for example, the conveying speed of a plate can be accurately controlled to be conveyed at a constant speed or at a real speed and at a required theoretical speed with high accuracy; meanwhile, the head of the circuit board 2000 is clamped by the conveying assembly, and the tail of the circuit board 2000 is pressed by the front section of the conveying mechanism 600, so that the circuit board 2000 can keep stable and stable performance in the moving process, and the service life of the first conveying assembly 611 and the second conveying assembly 633 cannot be influenced.

One possible application of the transport mechanism 600 is in an optical inspection apparatus. In the prior art, for the online automatic optical detection equipment of the PCB/FPC, the detection requires that the transmission speed of an image acquisition system is matched with that of a circuit board 2000, the authenticity of an acquired image is ensured, automatic optical detection software can automatically detect the acquired image and then output a detection result. The transport mechanism 600 that this application embodiment provided can accurately control the transfer rate of conveying subassembly through the motor, can avoid the plate to produce effectively and slide in the transfer process, realizes that the transfer rate of accurate control plate conveys with the high accuracy of constant speed or actual speed and required theoretical speed.

Referring to fig. 2, in the embodiment, two opposite ends of the second clamp seat 635 are respectively connected to a pair of first guide rails 607 in a sliding manner. The opposite ends of the second clamp seat 635 are slidably connected to a pair of second guide rails 609 of the frame 601, respectively. The second chuck 635 and the first chuck 613 extend along the Y-axis direction. A pair of first rail 607 and second rail 609 are provided along the Z-axis direction. In other words, the first jig holder 613 and the second jig holder 635 are provided to be offset in the first direction (Z-axis direction).

Referring to fig. 2, the first clamp seat 613 is connected to the first belt 643, and the second clamp seat 635 is connected to the second belt 647.

Referring to fig. 2, a first fixture 615 is disposed on the first fixture seat 613, and a second fixture 637 is disposed on the second fixture seat 635. The first gripper 615 is disposed on a side of the first gripper base 613 facing the front section of the transfer mechanism 600. The second jig 637 is also provided on the side of the second jig base 635 facing the front section of the transfer mechanism 600. Both the first fixture 615 and the second fixture 637 are used to clamp the wiring board 2000.

The first fixture 615 and the second fixture 637 may be of the same or different configurations. Optionally, the first clamp 615 is slidable relative to the clamp base in the Z-axis direction to adjust the height of the first clamp 615. Likewise, the second fixture 637 may also slide in the Z-axis direction relative to the fixture seat to adjust the height of the second fixture 637.

Alternatively, the number of the first jigs 615 on the first jig base 613 may be one or more, and when the number of the first jigs 615 is plural, the plural first jigs 615 may be adjusted in height individually, or the plural first jigs 615 may be adjusted in height together. Accordingly, the number of the second jigs 637 may be one or more, and when the number of the second jigs 637 is plural, the plural second jigs 637 may be adjusted in height individually, or the plural second jigs 637 may be adjusted in height together.

The design of the first clamp 615 in this embodiment includes, but is not limited to, the following embodiments. In this embodiment, the first jig 615 is used as an upper jig, and the second jig 637 is used as a lower jig.

Referring to fig. 3 and 4, in one possible embodiment of the first clamp, the first clamp 615 includes a cylinder block 619, a clamping cylinder 621, a floating joint 631, a clamp moving plate 627 and a clamp fixing plate 629.

Referring to fig. 3 and 4, the cylinder block 619 is directly or indirectly connected to the first clamp block 613. The clamping cylinder 621 is provided on the cylinder block 619. The floating joint 631 is connected to the clamp cylinder 621 in the positive Z-axis direction. One end of the floating joint 631 is connected to the clamp cylinder 621, and the other end of the floating joint 631 is connected to a first end of the clamp movable plate 627. The clip moving plate 627 extends substantially in the X-axis direction. Wherein, a clip pressing plate 628 is disposed at a second end of the clip moving plate 627. A clip fixing plate 629 is located on the side of the clip moving plate 627 facing away from the clamping cylinder 621. A first end of the clip securing plate 629 is fixedly attached to the cylinder block 619. The middle section of the clip fixing plate 629 is rotatably connected with the middle section of the clip moving plate 627 by a rotating shaft. The second end of the clamp fixing plate 629 and the second end of the clamp movable plate 627 generate a clamping force against each other under the actions of the clamping cylinder 621 and the floating connector 631 to clamp the circuit board 2000.

The floating joint 631 is also called as a floating coupling, and the floating joint 631 can absorb the eccentricity and the lack of parallelism precision between the clamp moving plate 627 and the clamping cylinder 621 on one hand, so that the clamp moving plate 627 and the clamping cylinder 621 can work within an allowable eccentricity range; on the other hand, the floating joint 631 occupies a small volume and has few parts.

By designing the first clamp 615, the clamping cylinder 621 can push the floating joint 631 along the Z-axis in the reverse direction, so as to move the first end of the clamp moving plate 627 along the Z-axis in the reverse direction, and further drive the second end of the clamp moving plate 627 to move along the Z-axis in the forward direction, at this time, the clamp pressing plate 628 on the second end of the clamp moving plate 627 is separated from the second end of the clamp fixing plate 629 to form an opening, and the first motor 641 drives the first driving belt 643 to move towards the X-axis in the reverse direction, so that the end of the circuit board 2000 press-fitted with the front section of the transmission mechanism 600 is disposed in. The clamp cylinder 621 pulls the floating joint 631 along the Z-axis forward direction to move the first end of the clamp moving plate 627 along the Z-axis forward direction, so as to drive the second end of the clamp moving plate 627 to move along the Z-axis backward direction until the clamp pressing plate 628 on the second end of the clamp moving plate 627 and the second end of the clamp fixing plate 629 clamp the end of the circuit board 2000. The first motor 641 drives the first transmission belt 643 to move forward along the X axis, so that the first transmission assembly 611 drives the circuit board 2000 to move forward along the X axis.

It can be understood that the opening angle of the clamp moving plate 627 relative to the clamp fixing plate 629 can be adjusted by the clamping cylinder 621, so that the first clamp 615 can clamp circuit boards 2000 with different thicknesses; the clamp moving plate 627 has enough clamping force when clamping the circuit board 2000 by the control of the clamping cylinder 621, so as to stably clamp the circuit board 2000.

The front end of the clamp (the second end of the clamp movable plate 627) is provided with a clamp pressing plate 628, so that circuit boards 2000 with different thicknesses can be clamped tightly, and the problem that a thin plate (for example, a plate with a thickness of 0.05 mm) cannot be detected is solved. The clamp pressing plate 628 is provided with a saw-toothed structure, the second end of the clamp fixing plate 629 is also provided with a saw-toothed structure, so that the friction force between the clamp pressing plate 628 and the circuit board 2000 is increased, the friction force between the second end of the clamp fixing plate 629 and the circuit board 2000 is increased, the clamping force of the first clamp 615 is improved by increasing friction factors, and the circuit board 2000 is prevented from sliding down in the clamping process.

Further, referring to fig. 2 and 3, the first clamp 615 further includes a movable cylinder 617. Wherein the movable cylinder 617 is fixed to the first chuck base 613. A movable cylinder 617 may be connected to the cylinder block 619 of the first plurality of clamps 615 by a connecting plate to move the first plurality of clamps 615 together in a first direction (i.e., a Z-axis direction). In other words, one movable cylinder 617 is used to adjust the heights of the plurality of first clamps 615.

In other embodiments, a movable cylinder 617 may be coupled to a cylinder block 619 of a first clamp 615 to move the first clamp 615 in a first direction (i.e., the Z-axis).

Referring to fig. 3, in an embodiment of a possible layout of the first fixture, the number of the first fixtures 615 arranged on the first fixture seat 613 is plural, and the plural first fixtures 615 include at least one first clamp 615a and at least one second clamp 615 b. Alternatively, the first clip 615a may be fixed or slidable with respect to the first holder 613. Alternatively, the second clip 615b may be fixed or slidable with respect to the first holder 613. In this embodiment, the first clip 615a and the second clip 615b are both fixed relative to the first clamp seat 613. The number of the first clips 615a may be one, and the number of the second clips 615b may be plural. Optionally, a distance between the adjacent first clips 615a and the second clips 615b is smaller than or equal to a distance between two adjacent second clips 615 b. In other words, the plurality of second clips 615b are disposed at a higher density. A different second clip 615 may be adapted to grip a second end of the panel while the first clip 615a grips the first end of the panel. Thus, the second grippers 615b can be used for the first conveying assembly 611 to grip different lengths of plate members. Of course, in other embodiments, the number of the first clips 615a may be one, and the number of the second clips 615b may be one. The first clip 615a and the second clip 615b are fixed relative to the first clamp seat 613. The first clip 615a and the second clip 615b are disposed at an interval, and the first clip 615a and the second clip 615b can clamp a plate having a length greater than a distance between the two clips. In other embodiments, the number of first clips 615a may be one, and the number of second clips 615b may be one. The first clip 615a is fixed with respect to the first holder 613, and the second clip 615b is slidable along the first holder 613. By adjusting the position of the second clamp 615b, plates with different sizes can be clamped. In other embodiments, the number of first clips 615a may be one, and the number of second clips 615b may be one. The first clip 615a and the second clip 615b both slide relative to the first holder 613. By adjusting the positions of the first clip 615a and the second clip 615b, plates with different sizes can be clamped.

In this embodiment, referring to fig. 3, a plurality of first clamps 615 are disposed on a cylinder moving plate 630, and the cylinder moving plate 630 is connected to the movable cylinder 617 through a guide rail, so that all the first clamps 615 can complete the ascending and descending operations under the action of the movable cylinder 617.

In the transport mechanism 600, a position signal feedback device such as a grating scale or other encoder is disposed on the first guide rail 607 to feed back the position of the first transport unit 611 in the X direction.

In operation, the first conveying assembly 611 takes out the circuit board 2000 at a constant speed (or non-uniform speed) by the first motor 641, and after the circuit board 2000 is taken out, all the first clamps 615 are opened at the same time to clamp the circuit board 2000. All the first grippers 615 are simultaneously opened again to drop the circuit board 2000 into the blanking conveyor mechanism and then all the first grippers 615 are returned to the original position by the movable air cylinder 617, and the next transfer is repeated. The Z-axis direction position of all the first jigs 615 is controlled by one movable cylinder 617, on the one hand, the number of cylinders in the Z-axis direction can be reduced, and on the other hand, the heights of all the first jigs 615 in the Z-axis direction can be made uniform.

Referring to fig. 5, the structure of the second conveying assembly 633 is substantially the same as that of the first conveying assembly 611, and the second conveying assembly 633 is different from the first conveying assembly 611 in that the first fixture 615 is different from the second fixture 637.

Referring to fig. 4 and 6, in a possible structure of the first and second jigs, the second jig 637 and the first jig 615 have substantially the same structure. The second clamp 637 includes a cylinder block 619, a clamping cylinder 621, a clamp moving plate 627, and a clamp fixing plate 629. Optionally, the second clamp 637 may further include a floating joint 631 and a movable cylinder 617.

The second clamp 637 mainly differs from the first clamp 615 in that the clamping cylinder 621 of the first clamp 615 is located on a side of the clamp moving plate 627 which faces away from the clamp fixing plate 629. The clamping cylinder 621 of the second clamp 637 is located on a side of the clamp fixing plate 629 away from the clamp moving plate 627. In other words, in the first direction (Z-axis direction), the clamping cylinder 621 of the first clamp 615, the clamp moving plate 627 of the first clamp 615, and the clamp fixing plate 629 of the first clamp 615 are sequentially disposed. The clip moving plate 627 of the second clip 637, the clip fixing plate 629 of the second clip 637, and the clamping cylinder 621 of the second clip are sequentially disposed.

Specifically, referring to fig. 6, the clamping cylinder 621, the clip fixing plate 629 and the clip moving plate 627 of the second clamp 637 are sequentially arranged along the Z-axis forward direction. The principle of the second clamp 637 clamping and releasing the circuit board 2000 can refer to the principle of the first clamp 615 clamping and releasing the circuit board 2000, and is not described in detail here.

In this embodiment, referring to fig. 2, in the Z-axis direction, the first clamp 615 is disposed on a side of the first clamp seat 613 close to the second clamp seat 635. The second fixture 637 is disposed on a side of the second fixture seat 635 close to the first fixture seat 613, so that the first fixture 615 and the second fixture 637 are both close to the circuit board 2000, and thus the distance between the first fixture 615 and the second fixture 637 to be adjusted in the Z-axis direction is small. Of course, in other embodiments, the first clamp 615 is disposed on a side of the first clamp seat 613 away from the second clamp seat 635; and the second clamp 637 is disposed on a side of the second clamp seat 635 close to the first clamp seat 613. Alternatively, the first clamp 615 is disposed on a side of the first clamp seat 613 away from the second clamp seat 635; and the second clamp 637 is disposed on a side of the second clamp seat 635 away from the first clamp seat 613. Alternatively, the first clamp 615 is disposed on a side of the first clamp seat 613 close to the second clamp seat 635; and the second clamp 637 is disposed on a side of the second clamp seat 635 away from the first clamp seat 613.

In the process of transferring the wiring board 2000 by the first transfer member 611, for the position adjustment in the X-axis direction, the first motor 641 transfers the first transfer member 611 to a position close to the wiring board 2000. For the position adjustment in the Y-axis direction, one first clip 615a of the first transport assembly 611 is located at a position close to the first side plate 603, and the other second clip 615b of the first transport assembly 611 slides along the first clip seat 613 to a suitable position according to the dimension of the wiring board 2000 in the Y-axis direction, so that the first clip 615a and the second clip 615b described above can stably clip the side of the wiring board 2000 extending in the Y-axis direction. For the position adjustment in the Z-axis direction, the movable cylinder 617 adjusts the position of the first jig 615 in the Z-axis direction so that the height of the clip fixing plate 629 of the first jig 615 matches the height of the bottom side of the wiring board 2000. For the clip control process, the clamping cylinder 621 acts on the clip moving plate 627 through the floating joint 631 to open the second end of the clip moving plate 627 to a proper angle with respect to the clip fixing plate 629 to enable the first clamp 615 to clamp the circuit board 2000. When the first clamp 615 is unfolded to a proper angle, the first motor 641 drives the first transmission assembly 611 to move further close to the circuit board 2000, so that the edge of the circuit board 2000 enters a certain distance into the opening of the first clamp 615, and the clamping cylinder 621 acts on the clamp moving plate 627 through the floating joint 631, so that the opening of the first clamp 615 is closed, and the circuit board 2000 is clamped. The first motor 641 drives the first transmission assembly 611 to drive the circuit board 2000 to move away from the front section of the transmission mechanism 600 at a precise control speed. When the transferring mechanism 600 is used for optical inspection, the inspecting mechanism inspects defects on the circuit board 2000, and the first motor 641 controls the moving speed of the circuit board 2000 to be matched with the inspecting speed of the inspecting mechanism, so as to improve the quality of the inspected image.

It is understood that the structure and the transferring process of the second transferring assembly 633 can refer to the structure and the transferring process of the first transferring assembly 611, wherein the structure of the second fixture 637 is different from the structure of the first fixture 615, and the above description is referred to, and therefore, the description thereof is omitted. The principle that the second transmission module 633 transmits the circuit board 2000 can refer to the principle that the first transmission module 611 transmits the circuit board 2000, and is not described herein again.

Referring to fig. 6, in an alternative embodiment of a possible layout of the first and second jigs, the second jig 637 includes at least one third clip 637a and at least one fourth clip 637 b. The third and

fourth clips

637a and 637b may be fixed or slidable with respect to the second jig base 630. For example, the third and

fourth clips

637a and 637b are both fixed relative to the second jig base 630. The number of the third clips 637a is one, the number of the fourth clips 637b is plural, and the distance between the adjacent third clips 637a and fourth clips 637b is larger than the distance between the adjacent two fourth clips 637b, so that the third clips 637a and fourth clips 637b can grip plates with different length sizes. The first clip 615a and the third clip 637a may be provided in line in the X-axis direction or may be provided offset in the X-axis direction. The second clip 615b and the fourth clip 637b may be arranged in line in the X-axis direction or may be arranged offset in the X-axis direction.

The second jig base 630 of the second convey assembly 633 is mounted to a pair of second rails 609. A position signal feedback device such as a grating ruler or other encoder is arranged on the second guide rail 609 to feed back the position of the second conveying component 633 in the X direction, and the detected circuit board 2000 is conveyed out of the device.

By arranging a plurality of relatively dense clamps along the Y-axis direction, the circuit board 2000 with any size can be compatible, and the compatibility is high. The conveying assembly adopts a modular design, and is convenient to debug and maintain.

In a second possible layout embodiment of the first clamp, referring to fig. 7-9, the first clamp 615 includes at least one first clip 615a and at least one second clip 615 b. The first clip 615a is a fixed clip fixed to the first clip base 613, and the position of the first clip 615a can be fixed to a reference position. The second clip 615b is a movable clip with respect to the first clip seat 613. The second clip 615b is disposed on the belt module on the first clamp seat 613, and can move relative to the first clamp seat 613 under the action of the belt module, and the position of the second clip 615b in the Y direction is changed by the belt module according to the dimension information of the circuit board 2000 in the Y axis direction, so that the first transmission component 611 can be suitable for the transmission of the circuit board 2000 with any dimension. It will be appreciated that the belt module may be replaced by a ball screw or linear motor or the like.

Specifically, the belt module includes a third motor 651, at least one third driving belt 653 and at least two third driving wheels 655. The third motor 651, the third driving belt 653 and the third driving wheel 655 are all disposed on the first chuck base. The third driving belt 653 may be disposed in the Y-axis direction. When the first clip 615a is adjacent to the first side plate 603, the third drive belt 653 may be relatively close to the second side plate 605. The axial directions of the two third transmission wheels 655 may be arranged in the Z-axis direction. Of course, in other embodiments, the axial directions of the two third transmission wheels 655 may be arranged in the X-axis direction by changing the arrangement surfaces of the two third transmission wheels 655. The rotating shaft of the third motor 651 can be directly or indirectly connected to the rotating shaft of one third driving wheel 655, and the third driving belt 653 is sleeved on the two third driving wheels 655. The second clip 615b is provided on the third belt 653. When the third motor 651 drives the rotating shaft of the third driving wheel 655 to rotate, the third driving wheel 655 drives the third driving belt 653 to drive the second clamp 615b to move along the Y-axis direction, so as to adjust the position of the second clamp 615b in the Y-axis direction, and clamp circuit boards 2000 with different Y-axis sizes.

In addition, a plurality of position signals such as a grating scale, a magnetic grating scale or other encoders are further disposed on the first gripper seat 613 to read the position of the second gripper 615b in the X direction in real time, so as to feed back the position information of the second gripper 615b to the controller.

Referring to fig. 10 and fig. 11, the principle of the first transmission assembly 611 for transmitting the circuit board 2000 is as follows: firstly, according to the size information of the circuit board 2000, the position of the second clamp 615b is adjusted through a belt module, when the first conveying assembly 611 moves to a proper position, the first clamp 615a and the second clamp 615b are controlled to be opened simultaneously, the first clamp 615a and the second clamp 615b are lowered to the conveying height in the Z direction through the movable air cylinder 617, then the first conveying assembly 611 is conveyed to the position to be conveyed through the first motor 641, after the first conveying assembly is in place, the first clamp 615a and the second clamp 615b are closed simultaneously, the circuit board 2000 is taken out at a constant speed through the first motor 641, after the first clamp 615a and the second clamp 615b are opened simultaneously to release the circuit board 2000, the circuit board 2000 falls into the blanking conveyor to be conveyed out, then the first clamp 615a and the second clamp 615b return to the initial position through the movable air cylinder 617, and the next conveying is repeated.

In a second possible structure of the first clamp, referring to fig. 11, the first clamp 615 includes a cylinder block 619, a clamping cylinder 621, a clamp link 623, a clamp bearing 625, a clamp moving plate 627 and a clamp fixing plate 629.

Referring to fig. 3 and 4, the cylinder block 619 is directly or indirectly connected to the first clamp block 613. The clamping cylinder 621 is provided on the cylinder block 619. The clamp bearing 625 and the clamp link 623 are connected to the clamp cylinder 621 in sequence along the positive direction of the Z-axis. One end of the clamp link 623 is connected to the clamp cylinder 621, the other end of the clamp link 623 is connected to one end of the clamp bearing 625, and the other end of the clamp bearing 625 is connected to the first end of the clamp movable plate 627. The clip moving plate 627 extends substantially in the X-axis direction. Wherein, a clip pressing plate 628 is disposed at a second end of the clip moving plate 627. A clip fixing plate 629 is located on the side of the clip moving plate 627 facing away from the clamping cylinder 621. A first end of the clip securing plate 629 is fixedly attached to the cylinder block 619. The middle section of the clip fixing plate 629 is rotatably connected with the middle section of the clip moving plate 627 by a rotating shaft. The second end of the clamp fixing plate 629 and the second end of the clamp movable plate 627 generate a clamping force against each other under the actions of the clamping cylinder 621 and the floating connector 631 to clamp the circuit board 2000.

The clamp adopts the connecting rod structure design, is simple and reliable in structure, free of friction damage, long in service life, and simple and convenient to debug and maintain.

Further, referring to fig. 12, the first clamp 615 further includes a movable cylinder 617. Wherein the movable cylinder 617 is fixed to the first chuck base 613. A movable cylinder 617 may be coupled to a cylinder block 619 of a first clamp 615 to move the first clamp 615 in a first direction (i.e., the Z-axis).

In a possible structure of the second fixture, referring to fig. 13 and 14, the second fixture 637 is substantially the same as the first fixture 615. The second clamp 637 includes a cylinder block 619, a clamping cylinder 621, a clamp moving plate 627, and a clamp fixing plate 629. Optionally, the second clamp 637 may further include a clamp link 623 and a clamp bearing 625.

The second clamp 637 mainly differs from the first clamp 615 in that the clamping cylinder 621 of the first clamp 615 is located on a side of the clamp moving plate 627 which faces away from the clamp fixing plate 629. The clamping cylinder 621 of the second clamp 637 is located on a side of the clamp fixing plate 629 away from the clamp moving plate 627.

Referring to fig. 13 and 14, in a possible layout of the second fixture, the second fixture 637 includes a third clamp 637a fixed relative to the second fixture seat 635 and a fourth clamp 637b movable relative to the second fixture seat 635. The driving structure of the fourth clip 637b moving along the second clip seat 635 refers to the driving structure of the second clip 615b moving along the first clip seat 613, and is not described in detail herein. The second clamp 637 is substantially identical in construction to the first clamp 615. The second clamp 637 mainly differs from the first clamp 615 in that the clamping cylinder 621 of the first clamp 615 is located on a side of the clamp moving plate 627 which faces away from the clamp fixing plate 629. The clamping cylinder 621 of the second clamp 637 is located on a side of the clamp fixing plate 629 away from the clamp moving plate 627. In other words, in the first direction (Z-axis direction), the clamping cylinder 621 of the first clamp 615, the clamp moving plate 627 of the first clamp 615, and the clamp fixing plate 629 of the first clamp 615 are sequentially disposed. The clip moving plate 627 of the second clip 637, the clip fixing plate 629 of the second clip 637, and the clamping cylinder 621 of the second clip are sequentially disposed.

It should be understood that, referring to fig. 12 and 13, the structure of the second conveying assembly 633 may refer to the structure of the first conveying assembly 611, wherein the structure of the first clamp 615 is different from the structure of the second clamp 637, and the above description is referred to, and is not repeated herein. The principle that the second transmission module 633 transmits the circuit board 2000 can refer to the principle that the first transmission module 611 transmits the circuit board 2000, and is not described herein again. The first transmission assembly 611 and the second transmission assembly 633 in the present embodiment can also realize alternate transmission line boards 2000 to increase the transmission efficiency of the line boards 2000.

The specific action flow is as follows: after the circuit board 2000 is conveyed to the conveying waiting position, the fourth clamp 637b of the second conveying assembly 633 adjusts the clamp position according to the size of the circuit board 2000, the second clamp 615b and the first clamp 615a of the first conveying assembly 611 are opened, the movable air cylinder 617 of the second conveying assembly 633 is lifted, the second conveying assembly 633 moves to the waiting position through the second guide rail 609, the clamp of the second conveying assembly 633 is closed to clamp the circuit board 2000, then the circuit board 2000 is taken out at a constant speed through the second guide rail 609 until all the circuit board 2000 passes through the collecting position, similarly, the first conveying assembly 611 completes conveying according to the same procedure, the first conveying assembly 611 and the second conveying assembly 633 alternately perform conveying, the efficiency is improved, the conveyed circuit board 2000 directly falls onto the blanking conveying mechanism below, and the circuit board 2000 is conveyed out through the blanking conveying mechanism.

This application is for traditional circuit board 2000's automated optical inspection's transfer mode, solve the unreal problem of the collection image that traditional cylinder conveying and belt drive brought effectively, in order to adopt the transport mechanism 600 that has anchor clamps and adopt first transport assembly 611 and the transmission of second transport assembly 633 alternative, the X axle direction configuration grating chi of transport assembly or other encoder wait position signal feedback device simultaneously, guarantee the stationarity and the production efficiency of circuit board 2000 conveying, the transport mode that adopts anchor clamps can prevent effectively that circuit board 2000 from skidding in the data send process, thereby the authenticity of collection image when transport mechanism 600 has been used for optical inspection equipment has been guaranteed.

According to the transmission mechanism 600 provided by the embodiment of the application, the first transmission assembly 611 and the second transmission assembly 633 are arranged on the transmission mechanism 600, the first transmission assembly 611 and the second transmission assembly 633 clamp the circuit board 2000, and the motor drives the first transmission assembly 611 and the second transmission assembly 633 to move along the Y axis, so that the first transmission assembly 611 and the second transmission assembly 633 drive the circuit board 2000 to gradually get away from the front section of the transmission mechanism 600. Compared with the traditional roller transmission or belt transmission, the transmission mechanism 600 provided by the embodiment of the application is driven by the clamping circuit board 2000 and the motor, and the motor can stably drive the transmission assembly to move along the Y-axis direction, so that the circuit board 2000 cannot slide, and the authenticity and efficiency of the image acquired by the detection mechanism are ensured; the first and second conveying

assemblies

611 and 633 are alternately driven by different motors to improve the conveying efficiency of the wiring board 2000.

The foregoing is a partial description of the present application, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present application, and these modifications and decorations are also regarded as the protection scope of the present application.

Claims

1. A transport mechanism for transporting sheet material, comprising:

a frame;

2. The transfer mechanism of claim 1, wherein said first gripper is plural in number, and wherein said plural first grippers includes at least one first clip fixed with respect to said first gripper seat and at least one second clip slidable along said first gripper seat.

3. The transfer mechanism of claim 2, wherein the first transfer assembly further comprises a motor, a belt, and a drive wheel disposed on the first gripper block, the motor configured to rotate the drive wheel, the drive wheel configured to move the belt, the belt coupled to the second gripper to slide the second gripper along the second gripper block.

4. The transfer mechanism of claim 1, wherein said first gripper is plural in number, and said plural first grippers includes at least one first clip and at least one second clip, and said first clip and said second clip are both fixed with respect to said first gripper seat, and when said plural second clips are plural, a spacing between adjacent ones of said first clips and said second clips is less than or equal to a spacing between adjacent ones of said second clips.

5. The transfer mechanism of claim 1, wherein said second gripper is plural in number, and a plurality of said second grippers includes at least one third gripper fixed with respect to said second gripper seat and at least one fourth gripper slidable along said second gripper seat; or the number of the second clamps is multiple, the multiple second clamps comprise at least one third clamp and at least one fourth clamp, the third clamp and the fourth clamp are both fixed relative to the second clamp seat, and when the number of the fourth clamps is multiple, the distance between the adjacent third clamp and the fourth clamp is smaller than or equal to the distance between the adjacent two fourth clamps.

6. The conveying mechanism as claimed in claim 1, wherein the first clamp and the second clamp each include a cylinder block, a clamping cylinder, a clamp moving plate and a clamp fixing plate, the cylinder block is connected to the first clamp block or the second clamp block, the clamping cylinder is disposed on the cylinder block, the clamping cylinder is connected to one end of the clamp moving plate, one end of the clamp fixing plate is fixedly connected to the cylinder block, the middle section of the clamp fixing plate is rotatably connected to the middle section of the clamp moving plate, and the other end of the clamp fixing plate and the other end of the clamp moving plate generate mutually abutting clamping force under the action of the clamping cylinder to clamp the plate.

7. The transfer mechanism of claim 6, wherein the clamp cylinder of the first clamp, the clamp movable plate of the first clamp, and the clamp fixed plate of the first clamp are sequentially disposed, and the clamp movable plate of the second clamp, the clamp fixed plate of the second clamp, and the clamp cylinder of the second clamp are sequentially disposed, along the first direction.

8. The transfer mechanism of claim 6, wherein each of the first and second clamps further comprises a floating joint, one end of the floating joint being connected to the clamping cylinder and the other end of the floating joint being connected to one end of the clamp flap; or, the first clamp and the second clamp both further comprise a clamp connecting rod and a clamp bearing, one end of the clamp connecting rod is connected with the clamping cylinder, and the clamp bearing is connected with the other end of the clamp connecting rod and one end of the clamp movable plate.

9. The transfer mechanism as claimed in claim 7, wherein each of the first transfer assembly and the second transfer assembly further comprises a movable cylinder, the movable cylinder of the first transfer assembly is fixed to the first clamp seat and connected to the cylinder seat of at least one of the first clamps to move the at least one of the first clamps in the first direction; the movable air cylinder of the second conveying assembly is fixed on the second clamp seat and connected with the air cylinder seat of at least one second clamp so as to drive the at least one second clamp to move along the first direction.

10. The transfer mechanism as claimed in any one of claims 1 to 9, further comprising a controller connecting the first transfer assembly and the second transfer assembly, the controller being configured to control the first transfer assembly and the second transfer assembly to alternately transfer the plate members.