Separating device for PCBs (printed circuit boards)

Abstract

The invention relates to a separating device for a PCB (Printed Circuit Board). The separating device comprises a rack and a conveying table arranged in the rack, a bearing seat for loading a PCB (Printed Circuit Board) is arranged on one side of the conveying table, and a turnover mechanism for turning over the bearing seat is mounted on the rack; the rack is further provided with a lateral jacking mechanism used for jacking the PCB and a separator used for separating the PCB, and the separator and the lateral jacking mechanism are located on the two opposite sides of the PCB. The separator comprises a separation mounting seat and a separation main body arranged in the separation mounting seat in a lifting manner, and a separation head for lifting the single side of the PCB is formed at the end part of the separation main body; compared with the prior art, under the action of the turnover mechanism, the vertically-arranged bearing plate can be turned over, the requirement for horizontal splitting of the PCBs is met, meanwhile, the adhesion time between the adjacent PCBs is shortened, and therefore the adhesion degree between the adjacent PCBs is reduced, and subsequent splitting operation of the PCBs is facilitated.

Description

Technical Field

[0001] The present invention relates to the technical field of equipment related to the production of PCB circuit boards, and specifically relates to a sheet separating device for PCB boards. Background Art

[0002] PCB, the Chinese name is printed circuit board, also known as printed wiring board, is an important electronic component, a support for electronic components, and a carrier for the electrical interconnection of electronic components. Since it is made by electronic printing technology, it is called a "printed" circuit board.

[0003] In the automated connection of LDI, robotic or non-robotic board loading machines generally use the method of vibrating the board to handle possible abnormal situations of board sticking and dropping. The vibrating board mechanism consists of cylinders arranged at the four corners of the PCB board, and the vibrating frequency of the board is controlled by setting the action frequency of the solenoid valve controlling the cylinders.

[0004] In the prior art, the existing PCB board sheet separating mechanism has a relatively compact structure, and it is difficult to shake open adjacent and stuck PCB boards. At the same time, the surface adhesion of the PCB board is greatly affected by the previous process, and there is also a risk that even after successful separation by vibrating the board, the board that is shaken off, due to free fall under gravity, deviates from the original position after falling, resulting in a corresponding shift in the board loading position when taking the board again, which will affect the passing of large-sized boards and cause board jamming.

[0005] Chinese Patent Publication No. CN112645057A discloses a sheet separating device, including a frame and a suction cup fixture fixed on the frame. The sheet separating device is characterized in that it further includes a rotating assembly with bristles, and the rotating assembly is arranged on one side of the frame, and the bristles rotate from the outside of the frame to the inside under the drive of the rotating assembly. The present invention completely separates the circuit boards that stick to each other during the processing through a simple structure.

[0006] The above-mentioned disclosed sheet separating device ensures the separation between adjacent PCB boards through bristles, blowing air and separation strips, and realizes the sheet separation of PCB boards through suction cups. However, under the lateral acting force of the bristles, blowing air and separation strips, it is easy to cause the position deviation of the PCB board to be separated below, thus affecting the accuracy of the board loading position after taking the board. At the same time, each time the above-mentioned sheet separating device takes a board, it is necessary to perform operations on adjacent PCB boards such as bristling, blowing air and separation strips in sequence, and the board taking efficiency is low. Summary of the Invention

[0007] The present invention aims to overcome the above-mentioned defects in the prior art and provides a sheet separating device for PCB boards in which the position of the separated board remains unchanged and does not affect the position of subsequent boards.

[0008] To achieve the above-mentioned invention object, the present invention adopts the following technical solutions: A sheet separation device for PCB boards, comprising a frame and a transfer table installed inside the frame; on one side of the transfer table, there is a carrier seat for loading PCB boards, and a flipping mechanism for flipping the carrier seat is installed on the frame; on the frame, there is also a side pressing mechanism for pressing the PCB boards tightly and a sheet separator for separating the PCB boards, and the sheet separator and the side pressing mechanism are located on opposite sides of the PCB board; the sheet separator includes a sheet separation mounting seat and a sheet separation main body arranged in a lifting manner inside the sheet separation mounting seat, and a sheet separation head for lifting one side of the PCB board is formed at the end of the sheet separation main body.

[0009] As a preferred solution of the present invention, the sheet separation mounting seat is a frame structure vertically and fixedly connected inside the frame. A sheet separation base for loading the sheet separation main body is arranged inside the sheet separation mounting seat, and a lifting motor for controlling the lifting of the sheet separation base is arranged at the bottom of the sheet separation mounting seat.

[0010] As a preferred solution of the present invention, vertical guiding edges that are always in contact with the side walls of the sheet separation base are formed on both sides of the sheet separation mounting seat, and vertical sliding rails are formed on the vertical guiding edges. A back plate adapted to the vertical sliding rails is installed on the back of the sheet separation base. A horizontal sliding rail facing the PCB board is installed inside the sheet separation base, and a locking block that can be locked on the horizontal sliding rail is arranged at the bottom of the sheet separation main body.

[0011] As a preferred solution of the present invention, a slider slidably connected to the vertical sliding rail is installed on the back plate, and a reserved hole for facilitating the horizontal movement of the sheet separation main body is reserved in the middle of the back plate.

[0012] As a preferred solution of the present invention, a vertically arranged screw rod is provided at the output end of the lifting motor, a lifting block threadedly connected to the screw rod is provided on the back plate, and a bearing seat rotatably connected to the screw rod is installed at the top of the sheet separation mounting seat.

[0013] As a preferred solution of the present invention, at least two parallel sheet separation heads are installed on the sheet separation main body. A rotating seat for supporting the rotation of the sheet separation head is arranged inside the sheet separation main body, and a driving cylinder for driving the movement of the rotating seat is arranged at the end of the sheet separation main body. A saw tooth rack is installed on the sheet separation head.

[0014] As a preferred solution of the present invention, the sheet separation head is inclined inward from top to bottom.

[0015] As a preferred solution of the present invention, the flipping mechanism includes a rotating frame that rotates synchronously with the carrier seat and an arc-shaped rack connected to the rotating frame. A rotating pin shaft rotatably connected to the frame is arranged on the rotating frame, and a servo motor is arranged on the frame. A gear meshing with the arc-shaped rack is provided at the output end of the servo motor.

[0016] As a preferred embodiment of the present invention, a rectangular placement groove for loading PCB boards is formed on the carrier seat.

[0017] As a preferred embodiment of the present invention, the side tightening mechanism includes a tightening plate and a hinge connecting rod. The hinge connecting rod includes a first hinge rod and a second hinge rod that are hinged to each other. The first hinge rod is hinged to the frame, and the second hinge rod is hinged to the tightening plate.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows: Under the action of the flipping mechanism, the vertically arranged carrier plate can be flipped, which can reduce the adhesion time between adjacent PCB boards while meeting the horizontal splitting of PCB boards, thereby reducing the adhesion degree between adjacent PCB boards and facilitating the subsequent splitting operation of PCB boards; Under the action of the splitter, unilateral jacking of the PCB board is achieved, thereby realizing the uncovering jacking of the PCB board, facilitating the splitting operation of the PCB board. At the same time, in combination with the side tightening mechanism, the position of the PCB board during the splitting process is limited to ensure the position accuracy of the PCB board during the splitting process and facilitate the manipulator to grasp the PCB board. Description of the Drawings

[0019] Figure 1 is a schematic structural diagram of the present invention; Figure 2 is a top view of the present invention; Figure 3 is a front view of the present invention; Figure 4 is a schematic structural diagram of the splitter; Figure 5 is a rear view of the splitter; Figure 6 is a schematic structural diagram of the splitting main body; Figure 7 is Figure 6 a partial enlarged view of part A in Figure 8 is a front view of the splitting main body; Figure 9 is a cross-sectional view of the splitting main body taken along the A-A plane; Figure 10 is a cross-sectional view of the splitting main body taken along the B-B plane; Figure 11 is a schematic diagram of the splitting of PCB boards; Reference numerals: frame 1, conveyor table 2, PCB board 3, carrier seat 4, turnover mechanism 5, servo motor 51, rotating frame 52, arc rack 53, gear 54, rotating pin shaft 55, sheet separator 6, sheet separation mounting seat 61, vertical guiding edge 611, vertical slide rail 612, sheet separation main body 62, locking block 621, rotating seat 622, sheet separation head 623, driving cylinder 624, saw rack 625, sheet separation base 63, lifting motor 64, back plate 65, reserved hole 651, slider 652, screw 66, bearing seat 67, lifting block 68, horizontal slide rail 69, side tightening mechanism 7, tightening plate 71, first hinge rod 72, second hinge rod 73. Detailed implementation manners

[0020] The following will describe the embodiments of the present invention in detail with reference to the accompanying drawings.

[0021] As Figures 1-11 shown, a sheet separation device for PCB boards includes a frame 1 and a conveyor table 2 installed in the frame 1; a carrier seat 4 for loading PCB boards is provided on one side of the conveyor table 2, and a turnover mechanism 5 for turning over the carrier seat 4 is installed on the frame 1; a side tightening mechanism 7 for tightening the PCB boards and a sheet separator 6 for separating the PCB boards are further provided on the frame 1, and the sheet separator 6 and the side tightening mechanism 7 are located on opposite sides of the PCB boards; the sheet separator 6 includes a sheet separation mounting seat 61 and a sheet separation main body 62 arranged in a lifting manner in the sheet separation mounting seat 61, and a sheet separation head 623 for lifting one side of the PCB boards is formed at the end of the sheet separation main body 62.

[0022] While receiving the PCB boards 3, the conveyor table 2 is used to convey the PCB boards 3 outside the frame 1 for the next process. The carrier seat 4 is used to load the overlapping PCB boards 3, and the carrier seat 4 can be turned over under the action of the turnover mechanism 5. Thus, when the PCB boards are placed on the carrier seat 4, the PCB boards are in a vertical state in the initial state, and at this time, several PCB boards are arranged in a row, thereby reducing the adhesion between the subsequent PCB boards 3 and facilitating the subsequent separation of the PCB boards 3.

[0023] A manipulator for transporting the PCB boards 3 from the carrier seat 4 to the conveyor table 2 is provided in the frame 1. The manipulator grabs the PCB boards 3 by means of a suction cup, and the manipulator grabs the PCB boards 3 separated by the sheet separator 6 under the action of the suction cup, ensuring that the manipulator transports a single PCB board 3 each time, so as to ensure that the manipulator does not affect the subsequent PCB boards 3 during the transportation of the PCB boards 3.

[0024] When the sheet separator 6 separates the overlapping PCB boards 3, under the action of the sheet separator 6, unilateral lifting of the PCB boards 3 is achieved, so that even if there is adhesion between the overlapping PCB boards 3, under the unilateral lifting action of the sheet separator 6, the PCB boards 3 are gradually lifted on the adjacent PCB boards 3. At the same time, under the action of the side pressing mechanism 7, the horizontal position of the overlapping PCB boards 3 is abutted, and the PCB boards 3 during the separation process by the sheet separator 6 are limited and supported to ensure the stability of the overall PCB boards 3.

[0025] The sheet separation mounting base 61 is a frame structure vertically and fixedly connected inside the frame 1. A sheet separation base 63 for loading the sheet separation main body 62 is provided inside the sheet separation mounting base 61, and a lifting motor 64 for controlling the lifting of the sheet separation base 63 is provided at the bottom of the sheet separation mounting base 61.

[0026] The sheet separation mounting base 61 is fixedly connected to the frame 1 by bolts. Under the action of the sheet separation mounting base 61 that is always in a relatively fixed position, the sheet separation base 63 can be adjusted in position along the height direction of the sheet separation mounting base 61 by the lifting motor 64, and the sheet separation main body 62 is synchronously driven to lift during the lifting process of the sheet separation base 63. The lifting of the sheet separation main body 62 is used to achieve the synchronous lifting of the PCB boards 3, thereby realizing the separation operation of the PCB boards 3.

[0027] Vertical guiding edges 611 that are always in contact with the side walls of the sheet separation base 63 are formed on both sides of the sheet separation mounting base 61, and vertical slide rails 612 are formed on the vertical guiding edges 611. A back plate 65 adapted to the vertical slide rails 612 is installed on the back of the sheet separation base 63, a horizontal slide rail 69 facing the PCB boards is installed inside the sheet separation base 63, and a locking block 621 that can be locked on the horizontal slide rail 69 is provided at the bottom of the sheet separation main body 62.

[0028] The sheet separation mounting base 61 is a hollow frame structure. The sheet separation base 63 is always located inside the hollow structure of the sheet separation mounting base 61. At the same time, under the action of the vertical guiding edges 611 that are always in contact with the sheet separation base 63, the lifting of the sheet separation base 63 is guided to ensure the stable lifting of the sheet separation base 63.

[0029] The back plate 65 is lifted and lowered relative to the sheet separation mounting base 61 under the action of the lifting motor 64. During the lifting and lowering process of the back plate 65, the sheet separation base 63 and the sheet separation main body 62 are synchronously driven to lift and lower. Therefore, the lifting motor 64 controls the lifting and lowering of the sheet separation main body 62 by controlling the lifting and lowering of the back plate 65.

[0030] Sliding blocks 652 slidably connected to the vertical slide rails 612 are installed on the back plate 65, and a reserved hole 651 for facilitating the horizontal movement of the sheet separation main body 62 is reserved in the middle of the back plate 65.

[0031] Under the cooperation of the vertical slide rail 612 and the slider 652, the lifting of the back plate 65 is guided to ensure that the back plate 65 moves up and down along the vertical direction of the sheet separating mounting base 61. At the same time, under the action of the reserved hole 651, the position of the sheet separating main body 62 is adjusted. By adjusting the position of the sheet separating main body 62 on the sheet separating base 63, the adjustment of the distance between the sheet separating main body 62 and the carrier seat 4 is realized, so as to meet the lifting requirements of the sheet separating main body 62 for PCB boards 3 of different sizes. The locking block 621 can be a slider structure with a threaded hole. After moving the sheet separating main body 62 to the corresponding position of the horizontal slide rail 69, by installing bolts on the locking block 621, the relative position of the sheet separating main body 62 on the horizontal slide rail 69 is locked.

[0032] A vertically arranged screw rod 66 is provided at the output end of the lifting motor 64. An lifting block 68 threadedly connected to the screw rod 66 is provided on the back plate 65. A bearing seat 67 rotatably connected to the screw rod 66 is installed on the top of the sheet separating mounting base 61.

[0033] The lifting motor 64 is used to drive the rotation of the screw rod 66. Thus, during the rotation of the screw rod 66, the threaded rotation with the lifting block 68 is realized, and the lifting block 68 moves up and down along the length direction of the screw rod 66, thereby driving the lifting of the back plate 65. The bearing seat 67 is used to support the rotation of the screw rod 66.

[0034] At least two parallel sheet separating heads 623 are installed on the sheet separating main body 62. A rotating seat 622 for supporting the rotation of the sheet separating heads 623 is provided inside the sheet separating main body 62. And a driving cylinder 624 for driving the movement of the rotating seat 622 is provided at the end of the sheet separating main body 62. A saw tooth rack 625 is installed on the sheet separating head 623.

[0035] The number of the sheet separating heads 623 is set according to actual needs. And the driving cylinders 624 at the end of the sheet separating main body 62 are connected to the sheet separating heads 623 one by one. All the driving cylinders 624 on the sheet separating main body 62 operate synchronously, so as to realize the synchronous control of multiple sheet separating heads 623.

[0036] The sheet separating heads 623 are always in the same inclined state, and the position of the sheet separating heads 623 can be adjusted by the telescopic movement of the driving cylinder 624.

[0037] During the use process, the sheet separating heads 623 and the rotating seat 622 are both in the horizontal state in the initial state. After the robotic arm takes away each PCB board, the lifting motor 64 drives the sheet separating main body 62 to descend, synchronously driving the synchronous descent of the sheet separating base 63, the back plate 65 and the horizontal slide rail 69. The descending position of the sheet separating main body 62 increases by the thickness of one PCB board layer by layer, ensuring that the rack 625 always aligns with the topmost PCB board.

[0038] After the rack 625 aligns with the PCB board to be lifted as required, the separating head 623 extends under the action of the driving cylinder 624. The middle part of the rack 625 abuts against the PCB board to be lifted. Under the action of the driving cylinder 624, the separating head 623 is lifted on the rotating seat 622, thereby realizing the unilateral lifting of the PCB board.

[0039] The flipping mechanism 5 includes a rotating frame 52 that rotates synchronously with the bearing seat 4 and an arc-shaped rack 53 connected to the rotating frame 52. A rotating pin shaft 55 rotatably connected to the frame 1 is provided on the rotating frame 52, and a servo motor 51 is provided on the frame 1. A gear 54 meshing with the arc-shaped rack 53 is provided at the output end of the servo motor 51.

[0040] The arc-shaped rack 53 is set according to the required flipping radian of the bearing seat 4. The servo motor 51 is fixedly connected to the frame 1 by bolts. Under the action of the servo motor 51, the rotation of the gear 54 is driven, thereby realizing the movement of the arc-shaped rack 53 and driving the flipping of the rotating frame 52. The bearing seat 4 can be flipped from an inclined state to a horizontal state.

[0041] A rectangular placement groove for loading PCB boards is formed on the bearing seat 4. The bearing seat 4 is in a vertical state in the initial state. At this time, the PCB boards only need to be placed vertically in the rectangular placement groove of the bearing seat 4. After the required PCB boards are placed, the vertically placed PCB boards can be flipped to a horizontal state by flipping the bearing seat 4, thereby reducing the adhesion degree between the PCB boards and facilitating the subsequent separation of the PCB boards.

[0042] The side tightening mechanism 7 includes a tightening plate 71 and a hinge connecting rod. The hinge connecting rod includes a first hinge rod 72 and a second hinge rod 73 that are hinged to each other. The first hinge rod 72 is hinged to the frame 1, and the second hinge rod 73 is hinged to the tightening plate 71.

[0043] After the PCB board 3 is flipped to a horizontal state under the flipping action of the bearing seat 4, the side tightening mechanism 7 is adjusted to make the tightening plate 71 abut against the sides of all the PCB boards 3, and the fixed connection between the first hinge rod 72 and the second hinge rod 73 is realized by bolts. Synchronously, the fixed connection between the first hinge rod 72 and the frame 1 is also realized by bolts, and the fixed connection between the second hinge rod 73 and the tightening plate 71 is realized by bolts, thereby realizing the stable support of the side tightening mechanism 7 for the PCB board 3.

[0044] During actual use, after the PCB board 3 is placed in position, the servo motor 51 drives the gear 54 to rotate. Through the meshing of the gear 54, the arc-shaped rack 53 is driven to make a rotational movement, realizing the flipping of the carrier 4. The separator 6 is fixed to the frame 1. The lifting motor 64 drives the separator main body 62 to rise to a specified position. At the same time, after the PCB board 3 is laid flat, the side tightening mechanism 7 tightens the stacked PCB boards 3. Thus, the preparation for separating is completed.

[0045] Through the separating operation of the separator 6, the topmost PCB board 3 is lifted. Then, the manipulator performs the operation of picking up the board. The separator 6 only lifts one board each time, and then, driven by the lifting motor 64, it performs the separating operation for the next board.

[0046] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but rather will conform to the widest scope consistent with the principles and novel features disclosed herein.

[0047] Although terms such as frame 1, transfer table 2, PCB board 3, carrier 4, flipping mechanism 5, servo motor 51, rotating frame 52, arc-shaped rack 53, gear 54, rotating pin shaft 55, separator 6, separator mounting base 61, vertical guiding edge 611, vertical sliding rail 612, separator main body 62, locking block 621, rotating seat 622, separator head 623, driving cylinder 624, saw-tooth rack 625, separator base 63, lifting motor 64, back plate 65, reserved hole 651, slider 652, screw 66, bearing seat 67, lifting block 68, horizontal sliding rail 69, side tightening mechanism 7, tightening plate 71, first articulated rod 72, second articulated rod 73, etc. are used more frequently in this article, the possibility of using other terms is not excluded. These terms are only used to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitation is contrary to the spirit of the present invention.

Claims

1. A sheet separating device for PCB boards, comprising a frame (1) and a transfer table (2) installed inside the frame (1); characterized in that, On one side of the transfer table (2), there is a bearing seat (4) for loading PCB boards, and a turnover mechanism (5) for turning over the bearing seat (4) is installed on the frame (1); on the frame (1), there is also a side tightening mechanism (7) for tightly pressing the PCB boards and a separator (6) for separating the PCB boards. The separator (6) and the side tightening mechanism (7) are located on opposite sides of the PCB board; the separator (6) includes a separator mounting seat (61) and a separator main body (62) arranged in a lifting manner in the separator mounting seat (61). At the end of the separator main body (62), there is a separator head (623) for lifting one side of the PCB board.

2. The sheet separating device for PCB boards according to claim 1, wherein The separator mounting seat (61) is a frame structure vertically and fixedly connected to the inside of the frame (1). Inside the separator mounting seat (61), there is a separator base (63) for loading the separator main body (62), and at the bottom of the separator mounting seat (61), there is a lifting motor (64) for controlling the lifting of the separator base (63).

3. A sheet separating device for PCB boards according to claim 2, characterized in that, On both sides of the separator mounting seat (61), there are vertical guiding edges (611) that always abut against the side walls of the separator base (63), and on the vertical guiding edges (611), there are vertically arranged vertical sliding rails (612). On the back of the separator base (63), there is a back plate (65) adapted to the vertical sliding rails (612). Inside the separator base (63), there is a horizontal sliding rail (69) arranged towards the PCB board. At the bottom of the separator main body (62), there is a locking block (621) that can be locked on the horizontal sliding rail (69).

4. A sheet separation device for PCB boards according to claim 3, characterized in that, On the back plate (65), there is a slider (652) slidably connected to the vertical sliding rail (612), and in the middle of the back plate (65), there is a reserved hole (651) for facilitating the horizontal movement of the separator main body (62).

5. A sheet separating device for PCB boards according to claim 2, characterized in that, At the output end of the lifting motor (64), there is a vertically arranged screw rod (66). On the back plate (65), there is a lifting block (68) threadedly connected to the screw rod (66). At the top of the separator mounting seat (61), there is a bearing seat (67) rotatably connected to the screw rod (66).

6. The sheet separating device for PCB board according to claim 1, characterized in that, On the separator main body (62), there are at least two parallel separator heads (623) installed. Inside the separator main body (62), there is a rotating seat (622) for supporting the rotation of the separator heads (623), and at the end of the separator main body (62), there is a driving cylinder (624) for driving the movement of the rotating seat (622). On the separator head (623), there is a sawtooth rack (625).

7. A sheet separating device for PCB boards according to claim 6, characterized in that, The separator head (623) is inclined inward from top to bottom.

8. A sheet separating device for PCB boards according to claim 1, characterized in that, The turnover mechanism (5) includes a rotating frame (52) that rotates synchronously with the bearing seat (4) and an arc-shaped rack (53) connected to the rotating frame (52). On the rotating frame (52), there is a rotating pin shaft (55) rotatably connected to the frame (1), and on the frame (1), there is a servo motor (51). At the output end of the servo motor (51), there is a gear (54) meshing with the arc-shaped rack (53).

9. A sheet separation device for PCB boards according to claim 8, characterized in that, On the bearing seat (4), there is a rectangular placement groove for loading PCB boards.

10. A sheet separating device for PCB boards according to claim 1, characterized in that, The side pressing mechanism (7) includes a pressing plate (71) and a hinge connecting rod, and the hinge connecting rod includes a first hinge rod (72) and a second hinge rod (73) which are hinged to each other. The first hinge rod (72) is hinged to the frame (1), and the second hinge rod (73) is hinged to the pressing plate (71).

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