Corner turning device and PCB production line

Abstract

The utility model provides a corner device and a PCB production line, and belongs to the technical field of corner equipment. The turning device comprises a supporting frame, a first working platform and a second working platform are arranged in the supporting frame, and turning mechanisms are arranged on the platforms and used for changing the flow direction of a tray. The first bearing plate is rotatably arranged on the partition plate and used for generating rotation; the second bearing plate is arranged on the first bearing plate in a sliding manner, can rotate along with the first bearing plate and can generate displacement relative to the first bearing plate; the conveying mechanism is used for bearing trays, is arranged on the second bearing plate through a distance adjusting mechanism, can move along with the second bearing plate, moves the trays outside the supporting frame into the supporting frame to realize reversing, and conveys the reversed trays to the outside of the supporting frame; the distance adjusting mechanism is used for adjusting the bearing width of the conveying mechanism so as to be matched with trays of different sizes. The tray clamping device is simple in structure, capable of being matched with trays of different sizes and wide in application range.

Description

Technical Field

[0001] The utility model relates to the technical field of corner equipment, and particularly relates to a corner device and a PCB board production line. Background Art

[0002] Some existing production lines are relatively long and require a relatively large space for layout. However, due to site limitations, the production line cannot be arranged in a straight line. To adapt to the space, the production line is divided into multiple rows or columns for layout. Usually, a corner machine is set at the turning point or intersection of the production line after adjustment to change the flow direction of materials, so as to achieve the purposes of changing the flow direction, diverting, converging, and sorting to adapt to production.

[0003] However, in the prior art, among the corner machines using trays for conveying, some can only convey trays of one size and cannot achieve rapid size switching. When trays of different sizes need to be conveyed, manual spacing adjustment is required, which limits the scope of application and reduces the operation efficiency. Summary of the Utility Model

[0004] The purpose of the embodiments of the utility model is to provide a corner device and a PCB board production line to solve the problems that some corner machines can only convey trays of one size, cannot achieve rapid size switching, when trays of different sizes need to be conveyed, manual spacing adjustment is required, which limits the scope of application and has low operation efficiency.

[0005] To achieve the above purpose, the embodiments of the utility model provide a corner device, and the corner device includes:

[0006] A support frame, in which two upper and lower partition boards are arranged. The two partition boards form a first working platform and a second working platform inside the support frame. Corner mechanisms are arranged on both the first working platform and the second working platform, and the corner mechanisms are used to change the flow direction of the trays. The corner mechanisms include;

[0007] A first carrier plate, rotatably arranged on the partition board, and used to rotate under the action of a first driving force;

[0008] A second carrier plate, slidably arranged on the first carrier plate, capable of rotating with the first carrier plate, and capable of generating a displacement relative to the first carrier plate under the action of a second driving force;

[0009] A conveying mechanism, arranged on the second carrier plate through a spacing adjustment mechanism, capable of moving with the second carrier plate. The conveying mechanism is used to carry the trays, move the trays outside the support frame into the support frame to realize tray commutation, and convey the trays that have completed commutation outside the support frame;

[0010] The spacing adjustment mechanism is used to adjust the carrying width of the conveying mechanism to match pallets of different sizes.

[0011] Optionally, a plurality of horizontal adjustment mechanisms are symmetrically arranged at the near-ground end of the support frame for adjusting the horizontality of the corner device.

[0012] Optionally, the horizontal adjustment mechanism includes:

[0013] A support screw, the top end of the support screw is rotationally connected to the frame of the support frame by a thread and fixed by a locking nut; an anti-slip pad is arranged at the bottom end of the support screw through a ball bearing.

[0014] Optionally, the first bearing plate is rotatably arranged on the partition board through a support bearing, and a driving tooth is arranged on the lower surface of the first bearing plate;

[0015] The corner device further includes:

[0016] A first driving motor, arranged on the partition board, the rotating shaft of the first driving motor is meshed and connected with the driving tooth of the first bearing plate through a driving bearing, and is used to generate a first driving force to drive the first bearing plate to rotate.

[0017] Optionally, at least one track is arranged on the upper surface of the first bearing plate;

[0018] The second bearing plate is slidably arranged on the track through a slider;

[0019] The corner device further includes:

[0020] A second driving motor, arranged on the first bearing plate, the rotating shaft of the second driving motor is connected with the slider through a belt, and is used to generate a second driving force to drive the slider to move.

[0021] Optionally, the conveying mechanism includes:

[0022] Mounting frames oppositely arranged on the spacing adjustment mechanism, a transmission chain is rotatably arranged on each mounting frame, and the transmission chain matches the pallet;

[0023] A rotating shaft, rotatably arranged on the second bearing plate, is connected with the transmission chain through a driving gear, and the rotating shaft is driven to rotate by a third driving motor arranged on the second bearing plate to drive the transmission chain to rotate synchronously.

[0024] Optionally, the rotating shaft is of a polygonal structure; the driving gear is slidably sleeved on the rotating shaft.

[0025] Optionally, the spacing adjustment mechanism includes:

[0026] The relatively arranged lead screws are respectively located on both sides of the rotating shaft. The mounting frame is connected to the lead screws through nuts, and the two lead screws are connected to each other through a drive belt;

[0027] A fourth driving motor is arranged on the second bearing plate and connected to any one of the lead screws, and is used to generate a fourth driving force to drive the lead screw to rotate so as to adjust the distance between the mounting frames.

[0028] Optionally, the corner device further includes:

[0029] At least one tensioning mechanism is arranged on the second bearing plate and contacts the drive belt, and is used to adjust the tension degree of the drive belt;

[0030] The tensioning mechanism includes:

[0031] A mounting plate is arranged on the second bearing plate, and a height adjusting mechanism is arranged on the mounting plate;

[0032] A rotating part is rotatably arranged on the height adjusting mechanism and contacts the drive belt. The height adjusting mechanism is used to adjust the vertical height of the rotating part so as to change the tension degree of the drive belt.

[0033] On the other hand, the present invention also provides a PCB board production line, including the above-mentioned corner device.

[0034] The corner device in this technical solution has two sets of corner mechanisms that are independently arranged, and in each corner mechanism, through the arranged distance adjusting mechanism, the corner of trays of different sizes can be realized. The overall structure is simple, it can adapt to trays of different sizes, has a wide adaptation range, can greatly improve the operation efficiency, and can provide a structural basis for automatic control.

[0035] Other features and advantages of the embodiments of the present invention will be described in detail in the subsequent specific implementation part. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] The drawings are used to provide a further understanding of the embodiments of the present invention, and constitute a part of the specification. Together with the following specific implementation manners, they are used to explain the embodiments of the present invention, but do not constitute a limitation to the embodiments of the present invention. In the drawings:

[0037] Figure 1 is a schematic structural diagram of the corner device provided by the present invention;

[0038] Figure 2 is a schematic structural diagram of the horizontal adjusting mechanism provided by the present invention;

[0039] Figure 3 is a top view of the corner mechanism provided by the present invention;

[0040] Figure 4 is the front view of some structures in the corner mechanism provided by the present invention;

[0041] Figure 5 is the structural schematic diagram of the tensioning mechanism provided by the present invention.

[0042] Explanation of reference numerals

[0043] 1 - Support frame; 2 - Corner mechanism; 3 - Horizontal adjustment mechanism;

[0044] 11 - Partition board; 21 - First bearing plate; 22 - Second bearing plate;

[0045] 23 - Conveying mechanism; 24 - Spacing adjustment mechanism; 25 - First driving motor;

[0046] 26 - Second driving motor; 27 - Third driving motor; 28 - Fourth driving motor;

[0047] 29 - Tensioning mechanism; 31 - Support screw; 32 - Anti - slip pad;

[0048] 33 - Locking nut; 211 - Support bearing; 212 - Driving tooth;

[0049] 213 - Track; 221 - Slide block; 231 - Installation frame;

[0050] 232 - Conveyor chain; 233 - Rotating shaft; 234 - Driving gear;

[0051] 241 - Lead screw; 242 - Nut; 243 - Driving belt;

[0052] 251 - Driving bearing; 261 - Belt; 291 - Installation plate;

[0053] 292 - Height adjustment mechanism; 293 - Rotating part; 2911 - Slot - shaped hole;

[0054] 2921 - Screw; 2922 - Nut. Detailed implementation manners

[0055] The following will detail the specific implementation manners of the embodiments of the present utility model in conjunction with the accompanying drawings. It should be understood that the specific implementation manners described herein are only for explaining and illustrating the embodiments of the present utility model, and are not used to limit the embodiments of the present utility model.

[0056] In the embodiments of the present utility model, unless otherwise stated, the orientation terms such as "upper", "lower", "left", and "right" generally refer to the orientation or positional relationship based on the drawings, or the orientation or positional relationship in which the utility model product is usually placed during use.

[0057] The terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0058] The terms "parallel", "perpendicular", etc. do not mean that the components are required to be absolutely parallel or perpendicular, but can be slightly inclined. For example, "parallel" only means that its direction is more parallel relative to "perpendicular", and does not mean that the structure must be completely parallel, but can be slightly inclined.

[0059] The terms "horizontal", "vertical", "hanging", etc. do not mean that the components are required to be absolutely horizontal, vertical or hanging, but can be slightly inclined. For example, "horizontal" only means that its direction is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0060] In addition, terms such as "substantially", "basically", etc. are intended to indicate that the relevant content does not require absolute precision, but can have a certain deviation. For example: "substantially equal" does not only mean absolute equality. Since it is difficult to achieve absolute "equality" during actual production and operation processes, there is generally a certain deviation. Therefore, in addition to absolute equality, "substantially equal" also includes the above-mentioned situation with a certain deviation. Taking this as an example, in other cases, unless otherwise specified, terms such as "substantially", "basically", etc. have meanings similar to the above.

[0061] In the description of the present utility model, it should also be noted that unless otherwise clearly specified and limited, the terms "set", "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0062] Figure 1 is a schematic structural view of the corner device provided by the present invention; Figure 2 is a schematic structural view of the horizontal adjustment mechanism provided by the present invention; Figure 3 is a top view of the corner mechanism provided by the present invention; Figure 4 is a front view of a part of the structure in the corner mechanism provided by the present invention; Figure 5 is a schematic structural view of the tensioning mechanism provided by the present invention.

[0063] Such asFigure 1 , 3 As shown in FIGS. -4, an embodiment provides a corner device, which includes:

[0064] A support frame 1, which is set as a frame structure. Therefore, it has an internal accommodation space. To improve the space utilization rate and ensure the corner efficiency at the same time, two partition plates 11 are sequentially and spacedly arranged in the support frame 1 from top to bottom. The two partition plates 11 respectively form a first working platform and a second working platform inside the support frame 1. Correspondingly, corner mechanisms 2 are arranged on both the first working platform and the second working platform. The corner mechanism 2 can realize the turning of the tray and change the moving direction of the tray by 90 degrees, so as to increase the space utilization rate in turn. In addition, in order to protect the internal structure of the support frame 1 and the operators, a housing is arranged on the support frame 1. To facilitate the movement of the tray, a tray inlet and a tray outlet are opened in the corresponding areas of the first working platform and the second working platform on the housing.

[0065] More specifically, in order to realize the turning of the tray, the corner mechanism 2 is set to include:

[0066] A first bearing plate 21, which is rotatably arranged on the partition plate 11 and is used to rotate under the action of a first driving force; preferably, the first bearing plate 21 can be set as a circular or square structure;

[0067] A second bearing plate 22, which is slidably arranged on the first bearing plate 21 and can rotate with the first bearing plate 21 and generate a displacement relative to the first bearing plate 21 under the action of a second driving force; preferably, the second bearing plate 22 is set as a square structure;

[0068] A conveying mechanism 23, which is arranged on the second bearing plate 22 through a spacing adjusting mechanism 24 and can move with the second bearing plate 22. The conveying mechanism 23 is used to carry the tray, move the tray outside the support frame 1 into the support frame 1 to realize tray commutation, and convey the tray that has completed commutation out of the support frame 1; the spacing adjusting mechanism 24 is used to adjust the carrying width of the conveying mechanism 23 to match trays of different sizes.

[0069] In one embodiment, since the production line floor cannot be guaranteed to be completely level, therefore, in order to ensure that the device works without being affected by the ground, as Figure 1 shown, a plurality of horizontal adjusting mechanisms 3 are symmetrically arranged at the bottom end (near the ground end) of the support frame 1. By adjusting the horizontal adjusting mechanisms 3 at the corresponding positions, the overall levelness of the corner device can be adjusted. Preferably, in this embodiment, as Figure 2 shown, the horizontal adjusting mechanism 3 is set to include:

[0070] Support screw 31 has external threads on its outer surface. At the corresponding position of the support frame 1, a matching threaded hole is provided. The top end of the support screw 31 is located in the threaded hole of the frame body of the support frame 1 and is rotatably connected to the support frame 1 through threads, thereby realizing the adjustment of the extended length;

[0071] In addition, an anti-slip pad 32 is provided at the bottom end of the support screw 31 through a ball bearing. By setting the anti-slip pad 32 through a ball bearing, the anti-slip pad 32 has the function of universal rotation to achieve stable contact with different inclined ground surfaces;

[0072] To ensure that the support screw 31 can be firmly fixed on the support frame 1, a locking nut 33 is provided on the support screw 31. The locking nut 33 can rotate on the support screw 31 and is used to fix the support screw 31 on the support frame 1. To ensure stability, the thread direction of the locking nut 33 can be set in the opposite direction to the thread direction of the threaded hole of the support frame 1, so as to avoid loosening through mutual matching.

[0073] In one embodiment, as Figure 4 shown, to ensure that the first bearing plate 21 can rotate, first, the first bearing plate 21 is arranged on the partition plate 11 through a support bearing 211, thereby realizing the limit of the first bearing plate 21, so that the first bearing plate 21 can only rotate around the bearing. And, to realize the drive of the first bearing plate 21, a first driving motor 25 is provided to generate a first driving force. The first driving motor 25 is arranged on the partition plate 11, and the rotating shaft of the first driving motor 25 is meshed and connected with the driving tooth 212 of the first bearing plate 21 through a driving bearing 251. When the rotating shaft of the first driving motor 25 rotates, the first bearing plate 21 rotates synchronously, thereby driving the second bearing plate 22 and the conveying mechanism 23 to rotate synchronously to realize steering; preferably, the first bearing plate 21 can be set as a circular or square structure.

[0074] In one embodiment, as Figure 4 shown, to realize the displacement adjustment of the second bearing plate 22, first, at least one track 213 is arranged on the upper surface of the first bearing plate 21. At the same time, a slider 221 is slidably arranged on the track 213, and then the second bearing plate 22 is arranged on the slider 221. The slider 221 drives the second bearing plate 22 to move. To realize the drive of the slider 221, a second driving motor 26 is arranged on the first bearing plate 21 (on the side of the first bearing plate 21) to generate the required driving force. At the same time, the rotating shaft of the second driving motor 26 is connected to the slider 221 through a belt 261. When the rotating shaft of the second driving motor 26 rotates, the slider 221 is driven to slide through the belt 261. By adopting this soft connection method, the transmission of vibration can be avoided.

[0075] In another embodiment, the second drive motor 26 can also be replaced by an electric telescopic rod. The electric telescopic rod is also arranged on the upper surface of the first carrier plate 21. The telescopic end of the electric telescopic rod is connected to the slider, and the displacement of the slider is adjusted by telescoping.

[0076] In another embodiment, the track 213, the slider 221 and the second drive motor 26 are replaced by a linear motor module.

[0077] In one embodiment, the tray is carried by the provided conveying mechanism 23, such as Figure 3 shown, the structure of the conveying mechanism 23 includes:

[0078] Mounting frames 231 oppositely arranged on the spacing adjusting mechanism 24. There is a certain spacing between the two mounting frames 231 for accommodating the tray. And a transmission chain 232 is rotatably arranged on each mounting frame 231. The transmission chain 232 matches the tray. When the tray needs to be conveyed, the edge of the tray contacts the transmission chain 232;

[0079] In order to drive the transmission chain 232 to rotate, a rotating shaft 233 and a third drive motor 27 are rotatably arranged on the second carrier plate 22. The output shaft of the third drive motor 27 is connected to the rotating shaft 233 for driving the rotating shaft 233 to rotate. And a driving gear 234 is slidably arranged on the rotating shaft 233. The driving gear 234 is meshed with the two transmission chains 232, so that the rotating shaft 233 drives the transmission chains 232 to rotate synchronously.

[0080] Furthermore, in order to match trays of different sizes and enable the two transmission chains 232 to hold up the tray, the spacing between the two mounting frames 231 needs to be adjusted by the spacing adjusting mechanism 24. Therefore, in order to ensure that the force transmission between the rotating shaft 233 and the transmission chain 232 is not affected by the position adjustment, the driving gear 234 is slidably arranged on the rotating shaft 233, so that while adjusting the position of the mounting frame 231, the driving gear 234 can be adjusted accordingly. Therefore, the rotating shaft 233 is set as a polygonal structure (such as a triangular column, a square column, a pentagonal column, etc.). Similarly, the inner ring of the driving gear 234 is set as a matching polygonal structure, so as to realize the force transmission of the rotating shaft 233 and ensure that the driving gear 234 slides on the rotating shaft 233.

[0081] In one embodiment, in order to match trays of different sizes and enable the two transmission chains 232 to hold up the tray, the spacing between the two mounting frames 231 needs to be adjusted by the spacing adjusting mechanism 24. Therefore, in this embodiment, as Figure 3 shown, the spacing adjusting mechanism 24 includes:

[0082] Two relatively arranged lead screws 241 are respectively located on both sides of the rotating shaft 233 and are arranged parallel to the rotating shaft 233. At least two nuts 242 are arranged on each lead screw 241. When the lead screw 241 rotates, the nut 242 can move. Therefore, the mounting frame 231 is arranged on the corresponding nut 242, and the relative movement of the two mounting frames 231 is realized through the movement of the nut 242, so as to adjust the distance between the two mounting frames 231. At the same time, the two lead screws 241 are connected to each other through a drive belt 243, and a rotational driving force is generated by a fourth drive motor 28 arranged on the second bearing plate 22, so as to ensure that the two lead screws 241 can rotate synchronously.

[0083] In one embodiment, in order to match pallets of different sizes and enable the two conveyor chains 232 to support the pallet, the lead screw 241 and the nut 242 cooperate with each other to adjust the distance between the two mounting frames 231. During the use of the arranged drive belt 243, the drive belt 243 may be deformed or the like, resulting in loose meshing, which may cause a certain delay in the transmission of the rotational driving force, and thus cause an error in the adjustment of the distance between the mounting frames 231. Therefore, at least one tensioning mechanism 29 is arranged on the second bearing plate 22. The tensioning mechanism 29 is in contact with the drive belt 243 and is used to adjust the tension degree of the drive belt 243. The number of the arranged tensioning mechanisms 29 is determined by the length of the drive belt 243. When more than two tensioning mechanisms 29 are arranged, they are respectively located on both sides of the rotating shaft 233; as Figure 5 shown, the tensioning mechanism 29 specifically includes:

[0084] A mounting plate 291 is vertically arranged on the second bearing plate 22, and a height adjustment mechanism 292 is arranged on each mounting plate 291;

[0085] A rotating part 293 is rotatably arranged on the height adjustment mechanism 292. The rotating part 293 is in contact with the drive belt 243 and can rotate along with the drive belt 243. Among them, the height adjustment mechanism 292 is used to adjust the vertical height of the rotating part 293 to change the tension degree of the drive belt 243.

[0086] Specifically, the mounting plate 291 is an L-shaped plate to increase the contact area of the mounting plate 291 and ensure the stability of the connection. A waist-shaped hole 2911 is formed on the mounting plate 291; the height adjustment mechanism 292 includes a screw 2921 and two nuts 2922; the rotating part 293 is a roller or a bearing and is arranged at the first end of the screw; the end of the screw passes through the waist-shaped hole and is tightened against the two sides of the mounting plate 291 by the two nuts to fix the screw on the mounting plate 291. When the tension degree needs to be adjusted, the nuts are loosened, the height of the screw is adjusted, and then the nuts are tightened to achieve fixation.

[0087] Specifically, the working principle of the corner device in this embodiment is as follows: When the tray to be turned is conveyed to the feeding port of the corner device, the third driving motor 27 is controlled to start working. By driving the transmission chain 232 to rotate, the transmission chain 232 contacts the tray outside the support frame 1 and bears the tray, and continues to work to move the tray to the middle position of the support frame 1 and then stops working. Then, the first driving motor 25 is controlled to start working, driving the first bearing plate 21 to rotate 90 degrees to realize the commutation of the tray, and the first driving motor 25 is controlled to stop working. Secondly, the second driving motor 26 is controlled to start working. By driving the slider 221 to move, the second bearing plate 22 is moved to the preset position, and then the second driving motor 26 stops working. Then, the third driving motor 27 is controlled to start working. By driving the transmission chain 232 to rotate, the tray that has completed the commutation is conveyed out of the support frame 1.

[0088] This embodiment also provides a PCB board production line, including the above-mentioned corner device. Among them, the corner device can be determined according to the actual production line length and the space of the factory building.

[0089] The optional implementation manners of the embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the embodiments of the present invention are not limited to the specific details in the above implementation manners. Within the technical concept scope of the embodiments of the present invention, various simple modifications can be made to the technical solutions of the embodiments of the present invention, and these simple modifications all belong to the protection scope of the embodiments of the present invention.

[0090] In addition, it should be noted that, among the various specific technical features described in the above specific implementation manners, they can be combined in any appropriate manner without conflict. To avoid unnecessary repetition, the embodiments of the present invention will not separately describe various possible combination manners.

[0091] Those skilled in the art can understand that all or part of the steps of implementing the methods in the above embodiments can be completed by instructing relevant hardware through a program. The program is stored in a storage medium, including several instructions for causing a single-chip microcomputer, a chip, or a processor to execute all or part of the steps of the methods described in various embodiments of the present application. The foregoing storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memories (ROM, Read-Only Memory), random access memories (RAM, Random Access Memory), magnetic disks, or optical discs that can store program codes.

[0092] In addition, any combination can be made between various different implementation manners of the embodiments of the present invention, as long as it does not violate the idea of the embodiments of the present invention, and it should also be regarded as the content disclosed in the embodiments of the present invention.

Claims

1. A corner device, characterized in that: The corner device comprises: A support frame (1), wherein two upper and lower partitions (11) are arranged inside the support frame (1), and the two partitions (11) form a first working platform and a second working platform inside the support frame (1), and both the first working platform and the second working platform are provided with a corner mechanism (2), and the corner mechanism (2) is used to change the flow direction of the tray, and the corner mechanism (2) comprises; A first bearing plate (21) is rotatably disposed on the partition plate (11) and is used to generate rotation under the action of a first driving force; A second bearing plate (22) is slidably disposed on the first bearing plate (21), is capable of rotating with the first bearing plate (21), and is capable of generating a displacement relative to the first bearing plate (21) under the action of a second driving force; A conveying mechanism (23) is arranged on the second carrying plate (22) through a spacing adjustment mechanism (24) and can move with the second carrying plate (22), wherein the conveying mechanism (23) is used to carry a pallet and move a pallet outside the support frame (1) into the support frame (1) to achieve pallet reversal, and to convey the pallet that has completed reversal to the outside of the support frame (1); The spacing adjustment mechanism (24) is used to adjust the load-bearing width of the conveying mechanism (23) to match pallets of different sizes.

2. The corner device according to claim 1, characterized in that: A plurality of level adjustment mechanisms (3) are symmetrically arranged at the ground-proximal end of the support frame (1) for adjusting the level of the corner device.

3. The corner device according to claim 2, characterized in that: The level adjustment mechanism (3) comprises: A support screw rod (31), the top end of which is rotatably connected to the frame body of the support frame (1) via a thread and fixed via a locking nut (33); the bottom end of the support screw rod (31) is provided with an anti-slip pad (32) via a ball bearing.

4. The corner device according to claim 1, characterized in that: The first bearing plate (21) is rotatably arranged on the partition plate (11) via a support bearing (211), and a driving tooth (212) is arranged on the lower surface of the first bearing plate (21); The corner device also includes: A first driving motor (25) is arranged on the partition (11); the rotating shaft of the first driving motor (25) is meshedly connected with the driving teeth (212) of the first supporting plate (21) via a driving bearing (251) to generate a first driving force to drive the first supporting plate (21) to rotate.

5. The corner device according to claim 1, characterized in that: At least one track (213) is provided on the upper surface of the first carrying plate (21); The second carrying plate (22) is slidably arranged on the track (213) via a slider (221); The corner device also includes: A second driving motor (26) is arranged on the first bearing plate (21); a rotating shaft of the second driving motor (26) is connected to the slider (221) via a belt (261) and is used to generate a second driving force to drive the slider (221) to move.

6. The corner device according to claim 1, characterized in that: The conveying mechanism (23) comprises: Relative to the installation frame (231) arranged on the spacing adjustment mechanism (24), each installation frame (231) is rotatably provided with a conveying chain (232), and the conveying chain (232) and the tray are matched with each other; The rotating shaft (233) is rotatably arranged on the second supporting plate (22) and is connected to the conveying chain (232) via a driving gear (234). The rotating shaft (233) is driven to rotate by a third driving motor (27) arranged on the second supporting plate (22) to drive the conveying chain (232) to rotate synchronously.

7. The corner device according to claim 6, characterized in that: The rotating shaft (233) is a polygonal structure; the driving gear (234) can be slidably sleeved on the rotating shaft (233).

8. The corner device according to claim 7, characterized in that: The spacing adjustment mechanism (24) comprises: The screw rods (241) are arranged opposite to each other and are respectively located on both sides of the rotating shaft (233); the mounting frame (231) is connected to the screw rods (241) via a nut (242); and the two screw rods (241) are connected to each other via a driving belt (243); A fourth driving motor (28) is arranged on the second bearing plate (22) and is connected to any one of the threaded rods (241) and is used to generate a fourth driving force to drive the threaded rod (241) to rotate so as to adjust the spacing between the installation frames (231).

9. The corner device according to claim 8, characterized in that: The corner device also includes: at least one tensioning mechanism (29), arranged on the second carrying plate (22), in contact with the driving belt (243), and used for adjusting the tension of the driving belt (243); The tensioning mechanism (29) comprises: A mounting plate (291) is arranged on the second bearing plate (22), and a height adjustment mechanism (292) is arranged on the mounting plate (291); The rotating part (293) is rotatably arranged on the height adjustment mechanism (292) and contacts the driving belt (243). The height adjustment mechanism (292) is used to adjust the vertical height of the rotating part (293) to change the tension of the driving belt (243).

10. A PCB production line, characterized in that: The invention comprises the corner device according to any one of claims 1 to 9.

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