A sheet separation device for PCB boards

Abstract

A device for separating PCB sheets, comprising a frame and a conveying platform installed in the frame; a bearing seat for loading PCB sheets is provided on one side of the conveying platform, and a flipping mechanism for flipping the bearing seat is installed on the frame; the frame is also provided with a lateral tightening mechanism for tightening the PCB sheets and a spreader for separating the PCB sheets, and the spreader and the lateral tightening mechanism are located on opposite sides of the PCB sheets; the spreader comprises a spreader mounting seat and a spreader body arranged in a lifting manner in the spreader mounting seat, and a spreader head for lifting the PCB sheets on one side is formed at the end of the spreader body; compared with the prior art, the vertically arranged bearing plate can be flipped under the action of the flipping mechanism, while meeting the horizontal separation of the PCB sheets, reducing the adhesion time between adjacent PCB sheets, thereby reducing the adhesion degree between adjacent PCB sheets, and facilitating the subsequent separation of the PCB sheets.

Description

Technical Field

[0001] The present invention relates to the technical field of equipment related to PCB circuit board production, and in particular to a sheet separation device for PCB plates. Background Art

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

[0003] In LDI automated wiring, robotic or non-robotic board placement machines generally use board shaking to deal with possible board sticking and board dropping anomalies. The board shaking mechanism consists of cylinders arranged at the four corners of the PCB board. The frequency of the board shaking is controlled by setting the operating frequency of the solenoid valve that controls the cylinder.

[0004] In the prior art, the existing PCB board separation mechanism has a relatively compact structure, making it difficult to shake apart adjacent PCB boards that are stuck together. Furthermore, the surface adhesion of the PCB boards is greatly affected by the previous process. Even after the boards are successfully separated, there is a risk that the boards that have been shaken off will deviate from their original positions due to free fall due to gravity. This will cause the board placement position to shift accordingly when the boards are retrieved again, affecting the passability of large-size boards and causing board jamming.

[0005] Chinese Publication No. CN112645057A discloses a separating device comprising a frame and a suction cup fixture secured to the frame. The separating device also includes a rotating assembly with bristles, located on one side of the frame. Driven by the rotating assembly, the bristles rotate from the outside of the frame to the inside. This simple structure allows the present invention to completely separate stuck circuit boards during processing.

[0006] The above-disclosed separating device ensures the separation between adjacent PCB boards through brushes, air blowing and separation strips, and realizes the separation of PCB boards through suction cups. However, under the lateral force of the brushes, air blowing and separation strips, the position of the PCB board to be separated below is easily caused to shift, thereby affecting the accuracy of the board placement position after the board is taken. At the same time, the above-mentioned separating device needs to perform brushing, air blowing and separation strip operations on adjacent PCB boards in turn each time a board is taken, resulting in low board taking efficiency. Summary of the Invention

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

[0008] In order to achieve the above-mentioned purpose of the invention, the present invention adopts the following technical solution: a device for separating PCB sheets, comprising a frame and a conveying platform installed in the frame; a supporting seat for loading PCB sheets is provided on one side of the conveying platform, and a flipping mechanism for flipping the supporting seat is installed on the frame; the frame is also provided with a side tightening mechanism for tightening the PCB sheets and a spreader for separating the PCB sheets, and the spreader and the side tightening mechanism are located on opposite sides of the PCB sheets; the spreader includes a spreader mounting seat and a spreader body arranged in a lifting manner in the spreader mounting seat, and a spreader head for lifting the PCB sheet on one side is formed at the end of the spreader body.

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

[0010] As a preferred solution of the present invention, vertical guide edges are formed on both sides of the sheet mounting seat, which are always in contact with the side walls of the sheet base, and vertical slide rails are formed on the vertical guide edges. A back panel that is compatible with the vertical slide rails is installed on the back of the sheet base, and a horizontal slide rail arranged toward the PCB board is installed in the sheet base. A locking block that can be locked on the horizontal slide rail is provided at the bottom of the sheet body.

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

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

[0013] As a preferred solution of the present invention, at least two parallel separating heads are installed on the separating body, a rotating seat for supporting the rotation of the separating head is provided in the separating body, and a driving cylinder for driving the rotating seat to move is provided at the end of the separating body, and a serrated bar is installed on the separating head.

[0014] As a preferred solution of the present invention, the separating head is arranged to be 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 supporting seat and an arc-shaped rack connected to the rotating frame. The rotating frame is provided with a rotating pin connected to the frame for rotation, and the frame is provided with a servo motor. The output end of the servo motor is provided with a gear that meshes with the arc-shaped rack.

[0016] As a preferred solution of the present invention, a rectangular placement groove for loading PCB plates is formed on the supporting seat.

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

[0018] Compared with the prior art, the present invention has the following advantages: the vertically arranged carrier plate can be flipped under the action of the flipping mechanism, thereby reducing the adhesion time between adjacent PCB plates while meeting the requirements of horizontal PCB plate separation, thereby reducing the adhesion degree between adjacent PCB plates and facilitating the subsequent PCB plate separation operation;

[0019] Under the action of the spreader, the PCB board is lifted on one side, thereby realizing the uncovering lifting of the PCB board, which is convenient for the separation operation of the PCB board. At the same time, combined with the side tightening mechanism, the position of the PCB board during the separation process is limited to ensure the position accuracy of the PCB board during the separation process, which is convenient for the robot to grab the PCB board. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention;

[0021] Figure 2 is a top view of the present invention;

[0022] Figure 3 It is a front view of the present invention;

[0023] Figure 4 It is a structural diagram of the spreader;

[0024] Figure 5 It is the rear view of the spreader;

[0025] Figure 6 It is a structural diagram of the main body of the sheet;

[0026] Figure 7 yes Figure 6 A partial enlarged view of point A in the middle;

[0027] Figure 8 It is the main view of the main body of the sheet;

[0028] Figure 9 It is the AA section view of the main body of the sheet;

[0029] Figure 10 This is the BB section view of the main body of the sheet;

[0030] Figure 11It is a schematic diagram of the PCB board;

[0031] Figure markings: frame 1, conveying table 2, PCB board 3, supporting seat 4, flipping mechanism 5, servo motor 51, rotating frame 52, arc rack 53, gear 54, rotating pin 55, spreader 6, spreader mounting seat 61, vertical guide edge 611, vertical slide rail 612, spreader body 62, locking block 621, rotating seat 622, spreader head 623, driving cylinder 624, serrated bar 625, spreader 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 DESCRIPTION

[0032] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0033] like Figures 1-11 As shown, a device for separating PCB sheets comprises a frame 1 and a conveyor table 2 installed in the frame 1; a supporting seat 4 for loading PCB sheets is provided on one side of the conveyor table 2, and a flipping mechanism 5 for flipping the supporting seat 4 is installed on the frame 1; the frame 1 is also provided with a lateral tightening mechanism 7 for tightening the PCB sheets and a spreader 6 for separating the PCB sheets, and the spreader 6 and the lateral tightening mechanism 7 are located on opposite sides of the PCB sheets; the spreader 6 comprises a spreader mounting seat 61 and a spreader body 62 which is lifted and arranged in the spreader mounting seat 61, and a spreader head 623 for lifting the PCB sheet on one side is formed at the end of the spreader body 62.

[0034] The conveying table 2 is used to receive the PCB sheets 3 and convey the PCB sheets 3 to the outside of the frame 1 for the next process. The supporting seat 4 is used to load the overlapping PCB sheets 3, and the supporting seat 4 can be flipped under the action of the flipping mechanism 5. Therefore, when the PCB sheets are placed on the supporting seat 4, the PCB boards are in a vertical state in the initial state, and at this time, several PCB sheets are arranged in rows, thereby reducing the adhesion between subsequent PCB sheets 3 and facilitating the subsequent separation of the PCB sheets 3.

[0035] A robot for transporting the PCB sheet 3 from the supporting base 4 to the conveying platform 2 is provided in the frame 1. The robot grabs the PCB sheet 3 by means of a suction cup, and the robot grabs the PCB sheet 3 separated by the separator 6 under the action of the suction cup, ensuring that the robot transports a single PCB sheet 3 each time, thereby ensuring that the robot does not affect subsequent PCB sheets 3 during the process of transporting the PCB sheet 3.

[0036] When the spreader 6 spreads the overlapping PCB sheets 3, the spreader 6 lifts the PCB sheets 3 on one side. Even if there is adhesion between the overlapping PCB sheets 3, the spreader 6 lifts the PCB sheets 3 on one side and gradually lifts the PCB sheets 3 on the adjacent PCB sheets 3. At the same time, the side tightening mechanism 7 supports the horizontal positions of the overlapping PCB sheets 3 and provides positional support for the PCB sheets 3 during the spreading process, thereby ensuring the stability of the entire PCB sheet 3.

[0037] The sheet mounting seat 61 is a frame structure vertically fixedly connected to the frame 1. A sheet base 63 for loading the sheet body 62 is provided in the sheet mounting seat 61, and a lifting motor 64 for controlling the lifting of the sheet base 63 is provided at the bottom of the sheet mounting seat 61.

[0038] The sheet-splitting mounting seat 61 is fixedly connected to the frame 1 by bolts. Under the action of the sheet-splitting mounting seat 61 which is always in a relatively fixed position, the sheet-splitting base 63 can be adjusted in the height direction of the sheet-splitting mounting seat 61 by the lifting motor 64, and the sheet-splitting body 62 can be driven to rise and fall synchronously during the lifting process of the sheet-splitting base 63. The lifting of the sheet-splitting body 62 is used to achieve the synchronous lifting of the PCB board 3, thereby realizing the sheet-splitting operation of the PCB board 3.

[0039] Vertical guide edges 611 are formed on both sides of the sheet mounting seat 61, which are always in contact with the side walls of the sheet base 63, and vertical guide edges 611 are formed with vertical slide rails 612. A back plate 65 adapted to the vertical slide rails 612 is installed on the back of the sheet base 63. A horizontal slide rail 69 arranged toward the PCB board is installed in the sheet 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 body 62.

[0040] The sheet mounting seat 61 is a hollow frame structure, and the sheet base 63 is always located in the hollow structure of the sheet mounting seat 61. At the same time, under the action of the vertical guide edge 611 that is always in contact with the sheet base 63, the lifting and lowering of the sheet base 63 is guided to ensure the stable lifting and lowering of the sheet base 63.

[0041] The back plate 65 is raised and lowered relative to the sheet mounting seat 61 under the action of the lifting motor 64. During the lifting process of the back plate 65, the sheet base 63 and the sheet main body 62 are synchronously driven to rise and fall. Therefore, the lifting motor 64 controls the lifting of the sheet main body 62 by controlling the lifting of the back plate 65.

[0042] A slider 652 slidably connected to the vertical slide rail 612 is installed on the back plate 65 , and a reserved hole 651 is reserved in the middle of the back plate 65 to facilitate the horizontal movement of the sheet separation body 62 .

[0043] The vertical slide rail 612, in cooperation with the slider 652, guides the lifting and lowering of the back panel 65 to ensure that the back panel 65 is lifted and lowered along the vertical direction of the sheet mounting seat 61. At the same time, under the action of the reserved hole 651, the position of the sheet body 62 is adjusted. By adjusting the position of the sheet body 62 on the sheet base 63, the distance between the sheet body 62 and the supporting seat 4 is adjusted, thereby meeting the lifting requirements of the sheet body 62 corresponding to PCB plates 3 of different sizes. The locking block 621 can be a slider structure with a screw hole. After moving the sheet body 62 to the corresponding position of the horizontal slide rail 69, the relative position of the sheet body 62 on the horizontal slide rail 69 is locked by installing bolts on the locking block 621.

[0044] A vertically arranged screw 66 is provided at the output end of the lifting motor 64 , a lifting block 68 threadedly connected to the screw 66 is provided on the back plate 65 , and a bearing seat 67 rotatably connected to the screw 66 is installed on the top of the spreader mounting seat 61 .

[0045] The lifting motor 64 is used to drive the rotation of the screw 66, so that during the rotation of the screw 66, the thread rotation with the lifting block 68 is realized, and the lifting block 68 is lifted and lowered along the length direction of the screw 66, thereby driving the lifting and lowering of the back plate 65, and the bearing seat 67 is used to support the rotation of the screw 66.

[0046] At least two parallel separating heads 623 are installed on the separating body 62. A rotating seat 622 is provided inside the separating body 62 for supporting the rotation of the separating head 623, and a driving cylinder 624 is provided at the end of the separating body 62 for driving the rotating seat 622 to move. A serrated bar 625 is installed on the separating head 623.

[0047] The number of the sheeting heads 623 is set according to actual needs, and the driving cylinders 624 at the ends of the sheeting body 62 are linked to the sheeting heads 623 one by one. All the driving cylinders 624 on the sheeting body 62 operate synchronously, thereby realizing synchronous control of multiple sheeting heads 623.

[0048] The spreading head 623 is always in the same tilted state, and the position of the spreading head 623 can be extended or retracted by driving the cylinder 624 .

[0049] During use, the sheet separating head 623 and the rotating seat 622 are both in a horizontal state in the initial state. After the robotic arm takes away each PCB board, the lifting motor 64 drives the sheet separating body 62 to descend, and simultaneously drives the sheet separating base 63, the back plate 65 and the horizontal slide rail 69 to descend synchronously. The descending position of the sheet separating body 62 increases the thickness of a PCB board layer by layer, ensuring that the rack 625 is always aligned with the top PCB board.

[0050] After the rack 625 is aligned with the PCB plate to be lifted, the spreading head 623 is extended under the action of the driving cylinder 624, and the middle part of the rack 625 abuts against the PCB plate to be lifted. Under the action of the driving cylinder 624, the spreading head 623 is lifted on the rotating seat 622, thereby achieving unilateral lifting of the PCB plate.

[0051] The flipping mechanism 5 includes a rotating frame 52 that rotates synchronously with the supporting seat 4 and an arc-shaped rack 53 connected to the rotating frame 52. The rotating frame 52 is provided with a rotating pin 55 that is rotatably connected to the frame 1, and the frame 1 is provided with a servo motor 51. The output end of the servo motor 51 is provided with a gear 54 that meshes with the arc-shaped rack 53.

[0052] The arc-shaped rack 53 is set according to the required flipping arc of the supporting seat 4. The servo motor 51 is fixedly connected to the frame 1 by bolts. Under the action of the servo motor 51, the gear 54 is driven to rotate, thereby realizing the movement of the arc-shaped rack 53 and driving the flipping of the rotating frame 52, which can flip the supporting seat 4 from an inclined state to a horizontal state.

[0053] A rectangular placement groove for loading PCB boards is formed on the supporting seat 4. The supporting 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 supporting seat 4. After the required PCB boards are placed, the vertical PCB boards can be flipped to a horizontal state by flipping the supporting seat 4, thereby reducing the degree of adhesion between the PCB boards and facilitating the subsequent separation of the PCB boards.

[0054] The side tightening mechanism 7 includes a tightening plate 71 and a hinged connecting rod, the hinged connecting rod includes a first hinged rod 72 and a second hinged rod 73 that are hinged to each other. The first hinged rod 72 is hinged to the frame 1, and the second hinged rod 73 is hinged to the tightening plate 71.

[0055] When the PCB board 3 is flipped to a horizontal state under the flipping action of the supporting base 4, the side tightening mechanism 7 is adjusted to make the tightening plate 71 abut against all the side edges of the PCB board 3, and the first hinge rod 72 and the second hinge rod 73 are fixedly connected by bolts. At the same time, the first hinge rod 72 and the frame 1 are fixedly connected by bolts, and the second hinge rod 73 and the tightening plate 71 are fixedly connected by bolts, thereby achieving stable support of the PCB board 3 by the side tightening mechanism 7.

[0056] During actual use, after the PCB board 3 is placed in place, the gear 54 is driven to rotate under the action of the servo motor 51. Through the engagement of the gear 54, the arc-shaped rack 53 is driven to rotate, thereby realizing the flipping of the supporting seat 4. The spreader 6 is fixed on the frame 1, and the lifting motor 64 drives the spreader body 62 to rise to the specified position. At the same time, after the PCB board 3 is flattened, the side tightening mechanism 7 tightens the stacked PCB boards 3. At this point, the spreader preparation work is completed.

[0057] Through the sheet separation work of the separator 6, the top sheet of the PCB board 3 is lifted up, and then the robot performs the board removal action. The separator 6 only lifts one sheet at a time, and then it performs the next sheet separation action under the drive of the lifting motor 64.

[0058] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein, but is to be embodied in the widest possible manner consistent with the principles and novel features disclosed herein.

[0059] Although this document frequently uses the following terms: frame 1, conveyor 2, PCB board 3, support base 4, flip mechanism 5, servo motor 51, rotating frame 52, arc-shaped rack 53, gear 54, rotating pin 55, spreader 6, spreader mounting base 61, vertical guide edge 611, vertical slide rail 612, spreader body 62, locking block 621, rotating base 622, spreader head 623, driving cylinder 624, serrated bar 625, spreader base 63, lifting motor 64, back plate 65, reserved hole 651, slider 652, screw 66, bearing seat 67, lifting block 68, transverse slide rail 69, lateral tightening mechanism 7, tightening plate 71, first hinge rod 72, second hinge rod 73, etc., the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the present invention; interpreting them as any additional limitations is contrary to the spirit of the present invention.

Claims

1. A device for separating PCB sheets, comprising a frame (1) and a conveying platform (2) installed in the frame (1); characterized in that: A supporting seat (4) for loading PCB plates is provided on one side of the conveying platform (2), and a flipping mechanism (5) for flipping the supporting seat (4) is installed on the frame (1); the frame (1) is also provided with a side tightening mechanism (7) for tightening the PCB plates and a spreader (6) for spreading the PCB plates, and the spreader (6) and the side tightening mechanism (7) are located on opposite sides of the PCB plates; the spreader (6) includes a spreader mounting seat (61) and a spreader body (62) that is lifted and arranged in the spreader mounting seat (61), and a spreader head (623) for lifting the PCB plates on one side is formed at the end of the spreader body (62); when the PCB plates are placed on the supporting seat (4), the PCB plates are in a vertical state in the initial state, and at this time A plurality of PCB boards are arranged in a row; the sheet mounting seat (61) is a frame structure vertically fixedly connected to the frame (1); a sheet base (63) for loading the sheet body (62) is provided in the sheet mounting seat (61); and a lifting motor (64) for controlling the lifting of the sheet base (63) is provided at the bottom of the sheet mounting seat (61); at least two sheet heads (623) arranged in parallel are installed on the sheet body (62); a rotating seat (622) for supporting the sheet head (623) to rotate is provided in the sheet body (62); and a driving cylinder (624) for driving the rotating seat (622) to move is provided at the end of the sheet body (62); a sawtooth bar (625) is installed on the sheet head (623); the sheet head (623) is arranged to be tilted inward from top to bottom.

2. The PCB sheet separation device according to claim 1, characterized in that: Vertical guide edges (611) that are always in contact with the side walls of the sheet-forming base (63) are formed on both sides of the sheet-forming mounting seat (61), and vertical guide edges (611) are formed on the vertical guide edges (611). A back plate (65) that is compatible with the vertical slide rail (612) is installed on the back of the sheet-forming base (63). A horizontal slide rail (69) that is arranged toward the PCB board is installed in the sheet-forming base (63). A locking block (621) that can be locked on the horizontal slide rail (69) is provided at the bottom of the sheet-forming body (62).

3. The PCB sheet separation device according to claim 2, characterized in that: The back plate (65) is provided with a slider (652) slidably connected to the vertical slide rail (612), and a reserved hole (651) is reserved in the middle of the back plate (65) for facilitating the horizontal movement of the sheet separation body (62).

4. The PCB sheet separation device according to claim 1, characterized in that: The output end of the lifting motor (64) is provided with a vertically arranged screw (66), the back plate (65) is provided with a lifting block (68) threadedly connected to the screw (66), and the top of the spreader mounting seat (61) is provided with a bearing seat (67) rotatably connected to the screw (66).

5. The PCB sheet separation device according to claim 1, characterized in that: The turning mechanism (5) comprises a rotating frame (52) that rotates synchronously with the supporting seat (4) and an arc-shaped rack (53) connected to the rotating frame (52); a rotating pin (55) that is rotatably connected to the frame (1) is provided on the rotating frame (52); a servo motor (51) is provided on the frame (1); and a gear (54) that meshes with the arc-shaped rack (53) is provided at the output end of the servo motor (51).

6. The PCB sheet separation device according to claim 5, characterized in that: A rectangular placement slot for loading PCB plates is formed on the bearing seat (4).

7. The PCB sheet separation device according to claim 1, characterized in that: The side tightening mechanism (7) comprises a tightening plate (71) and a hinged connecting rod, wherein the hinged connecting rod comprises a first hinged rod (72) and a second hinged rod (73) that are hinged to each other, the first hinged rod (72) is hinged to the frame (1), and the second hinged rod (73) is hinged to the tightening plate (71).

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