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 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, a support for electronic components, and a carrier for electrical connections between electronic components. Because it is made using electronic printing technology, it is called a "printed" circuit board.

[0003] In the automated wiring of LDI, robotic or non-robotic board placement machines generally use board shaking to deal with possible board sticking and board falling 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, and it is difficult to shake apart adjacent PCB boards that are stuck together. At the same time, the surface adhesion of the PCB boards is greatly affected by the previous process, and even if the boards are successfully separated, there is a risk that the boards that are shaken off will deviate from their original positions due to free fall due to gravity. As a result, when the boards are taken again, the board placement position will be shifted accordingly, which will affect the passability of large-size boards and cause board jamming.

[0005] China Publication No. CN112645057A discloses a sheet separation device, comprising a frame and a suction cup fixture fixed on the frame, characterized in that the sheet separation device also comprises a rotating assembly with bristles, the rotating assembly is arranged on one side of the frame, and the bristles rotate from the outer side of the frame to the inner side thereof under the drive of the rotating assembly. The present invention completely separates the circuit boards that stick to each other during the processing process through a simple structure.

[0006] The above-disclosed separating device ensures the separation between adjacent PCB boards by means of bristles, air blowing and separation strips, and separates the PCB boards by means of suction cups. However, the lateral force of the bristles, air blowing and separation strips can easily cause the position of the PCB board to be separated below to shift, thereby affecting the accuracy of the board placement position after the board is taken out. 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 the board is taken out, resulting in low efficiency in taking out the boards. Summary of the invention

[0007] The present invention aims to overcome the defects in the prior art and provide 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 invention object, the present invention adopts the following technical scheme: a sheeting device for PCB plates, comprising a frame and a conveying table installed in the frame; a supporting seat for loading PCB plates is provided on one side of the conveying table, and a flipping mechanism for flipping the supporting seat is installed on the frame; the frame is also provided with a lateral tightening mechanism for tightening the PCB plates and a sheeter for sheeting the PCB plates, and the sheeter and the lateral tightening mechanism are located on opposite sides of the PCB plates; the sheeter comprises a sheeting mounting seat and a sheeting body arranged in a lifting manner in the sheeting mounting seat, and a sheeting head for lifting the PCB plate on one side is formed at the end of the sheeting 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 mounting seat is provided with a sheet base for loading the sheet body, and a lifting motor is provided at the bottom of the sheet mounting seat for controlling the lifting of the sheet base.

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

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

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

[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 rotating separation head is provided inside 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 shaft that is rotatably connected to the frame, and the frame is provided with a servo motor, and 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 bearing 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 beneficial effects: the vertically arranged carrier plate can be flipped under the action of the flipping mechanism, and while meeting the requirement of horizontal separation of PCB plates, the adhesion time between adjacent PCB plates is reduced, thereby reducing the degree of adhesion between adjacent PCB plates, and facilitating the subsequent separation of PCB plates; The PCB sheet is lifted on one side by the separator, thereby realizing the uncovering lifting of the PCB sheet, which is convenient for the sheet separation operation of the PCB sheet. At the same time, combined with the side tightening mechanism, the position of the PCB sheet during the sheet separation process is limited to ensure the position accuracy of the PCB sheet during the sheet separation process, which is convenient for the robot to grab the PCB sheet. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 is a top view of the present invention; Figure 3 It is a front view of the present invention; Figure 4 It is a structural schematic diagram of a spreader; Figure 5 It is the rear view of the spreader; Figure 6 It is a structural diagram of the main body of the sheet; Figure 7 yes Figure 6 A partial enlarged view of the middle A; Figure 8 It is the main view of the main body of the sheet; Fig. 9 It is the AA-plane cross-sectional view of the main body of the sheet; Fig.10 It is the BB section view of the main body of the sheet; Fig.11 It is a schematic diagram of the PCB board; Figure markings: frame 1, conveying table 2, PCB board 3, bearing 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, transverse slide rail 69, side tightening mechanism 7, tightening plate 71, first hinge rod 72, second hinge rod 73. DETAILED DESCRIPTION

[0020] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0021] like Figure 1-Figure 11 As shown, a sheeting device for PCB plates comprises a frame 1 and a conveying table 2 installed in the frame 1; a supporting seat 4 for loading PCB plates is provided on one side of the conveying 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 plates and a sheeter 6 for sheeting the PCB plates, and the sheeter 6 and the lateral tightening mechanism 7 are located on opposite sides of the PCB plates; the sheeter 6 comprises a sheeting mounting seat 61 and a sheeting main body 62 which is lifted and arranged in the sheeting mounting seat 61, and a sheeting head 623 for lifting one side of the PCB plate is formed at the end of the sheeting main body 62.

[0022] 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 board is in a vertical state in the initial state, and at this time, several PCB sheets are arranged in a row, thereby reducing the adhesion between the subsequent PCB sheets 3, which is convenient for the subsequent separation of the PCB sheets 3.

[0023] 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.

[0024] When the spreader 6 spreads the overlapping PCB sheets 3, the spreader 6 lifts the PCB sheets 3 on one side, so that even if there is adhesion between the overlapping PCB sheets 3, the PCB sheets 3 are gradually lifted up on the adjacent PCB sheets 3 under the action of the spreader 6. At the same time, under the action of the lateral tightening mechanism 7, the horizontal positions of the overlapping PCB sheets 3 are abutted, and the PCB sheets 3 in the spreading process of the spreader 6 are limited and supported, thereby ensuring the stability of the overall PCB sheets 3.

[0025] 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.

[0026] The sheet separation mounting seat 61 is fixedly connected to the frame 1 by bolts. With the sheet separation mounting seat 61 always in a relatively fixed position, the sheet separation base 63 can be adjusted in the height direction of the sheet separation mounting seat 61 by the lifting motor 64, and the sheet separation body 62 can be lifted and lowered synchronously during the lifting and lowering process of the sheet separation base 63. The lifting of the sheet separation body 62 is used to achieve the synchronous lifting of the PCB plate 3, thereby realizing the sheet separation operation of the PCB plate 3.

[0027] Vertical guide 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 seat 61, and vertical guide edges 611 are formed with vertical slide rails 612. A back plate 65 that is compatible with the vertical slide rails 612 is installed on the back of the sheet separation base 63. A horizontal slide rail 69 that is arranged toward the PCB board is installed in 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 body 62.

[0028] 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.

[0029] The back plate 65 is raised and lowered relative to the sheet mounting seat 61 by the lifting motor 64. During the lifting process of the back plate 65, the sheet base 63 and the sheet body 62 are synchronously driven to rise and fall. Therefore, the lifting motor 64 controls the lifting of the sheet body 62 by controlling the lifting of the back plate 65.

[0030] 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 for facilitating the horizontal movement of the sheet separation body 62 .

[0031] The vertical slide rail 612, in cooperation with the slider 652, guides the lifting and lowering of the back plate 65 to ensure that the back plate 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 transverse slide rail 69, the relative position of the sheet body 62 on the transverse slide rail 69 is locked by installing bolts on the locking block 621.

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

[0033] 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 of the back plate 65, and the bearing seat 67 is used to support the rotation of the screw 66.

[0034] At least two parallel separating heads 623 are installed on the separating body 62. A rotating seat 622 for supporting the separating head 623 to rotate is provided inside the separating body 62. A driving cylinder 624 for driving the rotating seat 622 to move is provided at the end of the separating body 62. A serrated bar 625 is installed on the separating head 623.

[0035] The number of sheet separation heads 623 is set according to actual needs, and the driving cylinder 624 at the end of the sheet separation body 62 is linked to the sheet separation head 623 one by one, and all the driving cylinders 624 on the sheet separation body 62 operate synchronously, thereby realizing synchronous control of multiple sheet separation heads 623.

[0036] 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 .

[0037] During use, the sheet separation head 623 and the rotating seat 622 are both in a horizontal state in the initial state. After the robot arm takes away each PCB sheet, the lifting motor 64 drives the sheet separation body 62 to descend, and simultaneously drives the sheet separation base 63, the back plate 65 and the horizontal slide rail 69 to descend synchronously. The descending position of the sheet separation body 62 increases the thickness of a PCB sheet layer by layer, ensuring that the rack 625 is always aligned with the top PCB sheet.

[0038] 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.

[0039] The flip 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.

[0040] 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. The servo motor 51 drives the gear 54 to rotate, thereby realizing the movement of the arc-shaped rack 53 and driving the flipping of the rotating frame 52, so that the supporting seat 4 can be flipped from an inclined state to a horizontal state.

[0041] A rectangular placement groove for loading PCB plates 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 plates only need to be placed vertically in the rectangular placement groove of the supporting seat 4. After the required PCB plates are placed, the vertical PCB plates can be flipped to a horizontal state by flipping the supporting seat 4, thereby reducing the degree of adhesion between the PCB plates and facilitating the subsequent separation of the PCB plates.

[0042] The lateral tightening mechanism 7 includes a tightening plate 71 and an articulated connecting rod, the articulated connecting rod includes a first articulated rod 72 and a second articulated rod 73 which are articulated to each other. The first articulated rod 72 is articulated to the frame 1 , and the second articulated rod 73 is articulated to the tightening plate 71 .

[0043] 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, so as to achieve stable support of the PCB board 3 by the side tightening mechanism 7.

[0044] 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, and the arc rack 53 is driven to rotate through the meshing of the gear 54 to realize the flipping of the supporting seat 4. The separator 6 is fixed on the frame 1, and the lifting motor 64 drives the separator 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 separation preparation work is completed.

[0045] Through the sheet separation work of the sheet separator 6, the topmost PCB board 3 is lifted up, and then the robot takes the board. The sheet separator 6 only lifts one board at a time, and then the lifting motor 64 drives the next sheet separation.

[0046] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be 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 will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0047] Although the present invention uses the following terms more frequently: frame 1, conveying table 2, PCB board 3, bearing seat 4, flip 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, sawtooth 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. The use of these terms is only for the purpose of more conveniently describing and explaining the essence of the present invention; interpreting them as any additional restrictions 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 support seat (4) for loading PCB plates is provided on one side of the conveying platform (2), and a flipping mechanism (5) for flipping the support seat (4) is installed on the frame (1); the frame (1) is also provided with a lateral pressing mechanism (7) for pressing the PCB plates and a spreader (6) for spreading the PCB plates, the spreader (6) and the lateral pressing mechanism (7) are located on opposite sides of the PCB plates; 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 plates on one side is formed at the end of the spreader body (62).

2. A PCB sheet separation device according to claim 1, characterized in that: The sheet-splitting mounting seat (61) is a frame-type structure vertically fixedly connected to the frame (1); a sheet-splitting base (63) for loading the sheet-splitting body (62) is provided in the sheet-splitting mounting seat (61); and a lifting motor (64) for controlling the lifting of the sheet-splitting base (63) is provided at the bottom of the sheet-splitting mounting seat (61).

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

4. A PCB sheet separation device according to claim 3, characterized in that: The back plate (65) is provided with a sliding block (652) slidably connected to the vertical sliding rail (612), 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).

5. The PCB sheet separation device according to claim 2, characterized in that: The output end of the lifting motor (64) is provided with a vertically arranged screw rod (66), the back plate (65) is provided with a lifting block (68) threadedly connected to the screw rod (66), and the top of the spreader mounting seat (61) is provided with a bearing seat (67) rotatably connected to the screw rod (66).

6. The device for separating PCB sheets according to claim 1, characterized in that: At least two sheet separation heads (623) arranged in parallel are mounted on the sheet separation body (62); a rotating seat (622) for supporting the sheet separation head (623) to rotate is arranged inside the sheet separation body (62); a driving cylinder (624) for driving the rotating seat (622) to move is arranged at the end of the sheet separation body (62); and a sawtooth bar (625) is mounted on the sheet separation head (623).

7. A PCB sheet separation device according to claim 6, characterized in that: The separating head (623) is arranged to be inclined inward from top to bottom.

8. The device for separating PCB sheets according to claim 1, characterized in that: The turning mechanism (5) comprises a rotating frame (52) that rotates synchronously with the bearing 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); the frame (1) is provided with a servo motor (51); and the output end of the servo motor (51) is provided with a gear (54) that meshes with the arc-shaped rack (53).

9. A PCB sheet separation device according to claim 8, characterized in that: The bearing seat (4) is formed with a rectangular placement groove for loading PCB plates.

10. The device for separating PCB sheets according to claim 1, characterized in that: The lateral tightening mechanism (7) comprises a tightening plate (71) and a hinged connecting rod, the hinged connecting rod comprising a first hinged rod (72) and a second hinged rod (73) which are hinged to each other, the first hinged rod (72) being hinged to the frame (1), and the second hinged rod (73) being hinged to the tightening plate (71).

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