PCB (Printed Circuit Board) positioning mechanism of plug-in machine

Abstract

A PCB positioning mechanism of a plug-in machine comprises a workbench, the workbench is provided with a conveying guide rail used for conveying a PCB, a rotating rod assembly and a first driver, the rotating rod assembly is provided with a limiting assembly and a positioning assembly, and the first driver is installed on an external board feeding machine. The external plate feeding machine drives the first driver to move downwards, the output end of the first driver acts on the rotating rod assembly when stretching out so that the rotating rod assembly can drive the limiting assembly and the positioning assembly to be lifted, and when the output end of the first driver retracts, the rotating rod assembly resets and rotates by a certain angle so as to drive the limiting assembly and the positioning assembly to move downwards. When the PCB is conveyed to the corresponding position, the PCB acts on the limiting assembly, when the external board feeding machine drives the first driver to move upwards, the rotating rod assembly completely resets and rotates, so that the limiting assembly and the positioning assembly are driven to descend to the maximum position, and then the positioning assembly acts on the PCB. According to the PCB positioning mechanism provided by the utility model, the accurate positioning of the PCB can be realized.

Description

Technical Field

[0001] The utility model relates to the technical field of plug-in machines, in particular to a PCB board positioning mechanism of a plug-in machine. Background Art

[0002] PCB boards generally require the insertion of spring clips. The spring clips are generally sucked by a chuck device, then moved to the top of the PCB board, and then moved downward to insert the spring clips into the PCB board. When inserting the spring clips, the PCB board generally needs to be positioned so that the spring clips can be accurately inserted into the PCB board. However, existing PCB board positioning mechanisms cannot accurately position the PCB board, making it difficult to accurately insert the spring clips into the PCB board.

[0003] Therefore, further improvements are necessary. Utility Model Content

[0004] The purpose of the utility model is to provide a PCB board positioning mechanism for an insertion machine with a simple structure, high reliability, high production efficiency, precise positioning and strong practicality, so as to overcome the shortcomings of the prior art.

[0005] A PCB board positioning mechanism of an insertion machine designed for this purpose includes a workbench, characterized in that: a conveying guide rail for conveying the PCB board, a rotating rod assembly and a first driver are provided on the workbench, a limiting assembly and a positioning assembly are provided on the rotating rod assembly, the first driver is installed on an external loader, the external loader drives the first driver downward and acts on the rotating rod assembly when the output end of the first driver is extended, so that the rotating rod assembly drives the limiting assembly and the positioning assembly to lift, when the output end of the first driver is retracted, the rotating rod assembly resets and rotates a certain angle to drive the limiting assembly and the positioning assembly to descend, and acts on the limiting assembly when the PCB board is conveyed to the corresponding position, and when the external loader drives the first driver upward, the rotating rod assembly completely resets and rotates to drive the limiting assembly and the positioning assembly to descend to the maximum position, thereby causing the positioning assembly to act on the PCB board.

[0006] The rotating rod assembly includes a rotating rod and an action piece installed at one end of the rotating rod. The rotating rod is rotatably set on the conveying guide rail. The external loader drives the first driver downward and the output end of the first driver extends to act on the action piece to rotate the rotating rod.

[0007] Several fixed seats are provided on the conveying guide rail, and the rotating rod is rotatably installed on the fixed seat. The rotating rod assembly also includes a first elastic member sleeved on the rotating rod, and the first elastic member is arranged between the action member and the fixed seat. The rotating rod assembly resets and rotates under the elastic force of the first elastic member.

[0008] The first driver is a cylinder, on which a piston rod is telescopically arranged, and when the piston rod is extended, it acts on the acting member.

[0009] The limit assembly includes a bracket and a limit plate. The bracket is mounted on the rotating rod and the limit plate is installed on the bracket. After the rotating rod drives the limit assembly to descend, the PCB board acts on the limit plate when it is transported to the corresponding position.

[0010] The limiting assembly further includes a second elastic member, which is sleeved on the rotating rod and arranged between the bracket and the conveying guide rail.

[0011] The positioning assembly includes a mounting base and a positioning claw. The mounting base is mounted on the rotating rod, and the positioning claw is installed on the mounting base. When the rotating rod drives the positioning assembly to descend to the maximum position, the positioning claw acts on the PCB board.

[0012] A positioning post is provided on the positioning claw, and a positioning hole is provided on the PCB board. When the positioning claw acts on the PCB board, the positioning post and the positioning hole are positioned and matched.

[0013] It also includes a driving device, which includes a second driver, a rotating shaft, a driving wheel, a driven wheel and a transmission belt. The second driver drives the connected rotating shaft, the driving wheel is installed on the rotating shaft, the transmission belt is arranged between the driving wheel and the driven wheel, and the transmission belt is arranged in the conveying guide rail. When the transmission belt moves, the PCB board is conveyed.

[0014] The conveying guide rail includes a first conveying guide rail and a second conveying guide rail. The PCB board is placed between the first conveying guide rail and the second conveying guide rail during transportation. The first conveying guide rail is fixed on the workbench, and the second conveying guide rail is slidably installed on the workbench through a slide rail assembly to adjust the distance between the first conveying guide rail and the second conveying guide rail.

[0015] The PCB board positioning mechanism of the utility model is provided with a conveying guide rail, a rotating rod assembly, a first driver, a limit assembly and a positioning assembly. The first driver drives the limit assembly and the positioning assembly to be lifted or lowered through the rotating rod assembly. After the limit assembly is lowered, the PCB board acts on the limit assembly when it is conveyed to the corresponding position. When the positioning assembly is lowered to the maximum position, it acts on the PCB board, thereby completing the precise positioning of the PCB board, so that the spring piece can be accurately inserted into the PCB board, thereby greatly improving the quality of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 Schematic diagram of the overall structure of the positioning mechanism in one embodiment of the present invention.

[0017] Figure 2 It is a partial structural diagram of the positioning mechanism in one embodiment of the present utility model.

[0018] Figure 3Schematic diagram of the overall structure of the limiting assembly in one embodiment of the present invention.

[0019] Figure 4 Schematic diagram of the overall structure of the positioning assembly in one embodiment of the present invention.

[0020] Figure 5 Schematic diagram of the overall structure of the first driver in one embodiment of the present invention.

[0021] Figure 6 This is a schematic diagram of the overall structure of a PCB board in one embodiment of the present invention. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] See also Figures 1-6 The PCB board positioning mechanism of the present insertion machine includes a workbench 1, on which is provided a conveying guide rail 3 for conveying the PCB board 2, a rotating rod assembly and a first driver 4, a limiting assembly and a positioning assembly are provided on the rotating rod assembly, and the first driver 4 is installed on the guide rail of an external loader (not shown in the figure). The external loader drives the first driver 4 downward and when the output end of the first driver 4 is extended, it acts on the rotating rod assembly, so that the rotating rod assembly drives the limiting assembly and the positioning assembly to lift up, and when the output end of the first driver 4 is retracted, the rotating rod assembly resets and rotates a certain angle to drive the limiting assembly and the positioning assembly to descend, and acts on the limiting assembly when the PCB board 2 is conveyed to the corresponding position, and when the external loader drives the first driver 4 upward, the rotating rod assembly completely resets and rotates to drive the limiting assembly and the positioning assembly to descend to the maximum position, thereby causing the positioning assembly to act on the PCB board 2.

[0024] The rotating rod assembly includes a rotating rod 5 and an action member 6 mounted on one end of the rotating rod 5. The action member 6 is a handle. The rotating rod 5 is rotatably set on the conveying guide rail 3. When the external loading machine drives the first driver 4 downward and the output end of the first driver 4 extends, it acts on the action member 6 to rotate the rotating rod 5. When the rotating rod 5 rotates, it drives the limit assembly and the positioning assembly to lift. At this time, the PCB board 2 can pass through the entire conveying guide rail 3.

[0025] A plurality of fixed seats 7 are provided on the conveying guide rail 3 (the first conveying guide rail 22), and the rotating rod 5 is rotatably mounted on the fixed seat 7. The fixed seat 7 is provided with a rotating hole, and the rotating rod 5 is passed through the rotating hole. The rotating rod assembly also includes a first elastic member 8 sleeved on the rotating rod 5. The first elastic member 8 is arranged between the action member 6 and the fixed seat 7. One end of the first elastic member 8 is connected to the action member 6 and the other end is connected to the fixed seat 7. The rotating rod assembly resets and rotates under the elastic force of the first elastic member 8. The first elastic member 8 is a torsion spring.

[0026] The first driver 4 is a cylinder, on which a piston rod 9 is telescopically provided. When the piston rod 9 is extended, it acts on one end of the action member 6 so that the action member 6 drives the rotating rod 5 to rotate. One end of the piston rod 9 is the output end of the first driver 4.

[0027] The limiting assembly includes a bracket 10 and a limiting plate 11. The bracket 10 is mounted on the rotating rod 5. The limiting plate 11 is installed on the bracket 10 by screws. After the rotating rod 5 drives the limiting assembly to descend, the PCB board 2 acts on the limiting plate 11 when it is transported to the corresponding position.

[0028] A stop bar 25 is provided at one end of the limiting piece 11 . When the PCB board 2 is conveyed to a corresponding position, it acts on the stop bar 25 , and at this time, the conveyance of the PCB board 2 stops.

[0029] The limiting assembly also includes a second elastic member 12, which is mounted on the rotating rod 5 and is arranged between the bracket 10 and the conveying guide rail 3 (the first conveying guide rail 22). One end of the second elastic member 12 is connected to the bracket 10 and the other end is connected to the conveying guide rail 3. The second elastic member 12 is a torsion spring, which also serves to reset and rotate the rotating rod assembly; the elastic force of the first elastic member 8 is greater than the elastic force of the second elastic member 12.

[0030] The positioning assembly includes a mounting base 13 and a positioning claw 14. The mounting base 13 is mounted on the rotating rod 5. The positioning claw 14 is installed on the mounting base 13 by screws. When the rotating rod 5 drives the positioning assembly to descend to the maximum position, the positioning claw 14 acts on the PCB board 2.

[0031] A positioning post 15 is provided at one end of the positioning claw 14 , and a positioning hole 16 is provided on the PCB board 2 . When the positioning claw 14 acts on the PCB board 2 , the positioning post 15 is positioned and matched with the positioning hole 16 to position the PCB board 2 .

[0032] A tapered portion (cone) 26 is provided at one end of the positioning post 15 . When the positioning post 15 is positioned and matched with the positioning hole 16 , the tapered portion 26 is inserted into the positioning hole 16 , thereby achieving accurate positioning of the PCB board 2 .

[0033] It also includes a driving device, which includes a second driver 17, a rotating shaft 18, a driving wheel 19, a driven wheel 20 and a transmission belt 21. The second driver 17 is fixed on the workbench 1, and the second driver 17 drives the connected rotating shaft 18. The driving wheel 19 is installed on the rotating shaft 18, and the transmission belt 21 is arranged between the driving wheel 19 and the driven wheel 20. The driven wheel 20 is rotatably installed on the conveying guide rail 3, and the transmission belt 21 is arranged in the conveying guide rail 3. The PCB board 2 is placed on the transmission belt 21 during transportation, and the transmission belt 21 transports the PCB board 2 when it moves; the second driver 17 drives the driving wheel 19 to rotate through the rotating shaft 18, and the driving wheel 19 drives the transmission belt 21 to move; the second driver 17 is a stepping motor.

[0034] The conveying guide rail 3 includes a first conveying guide rail 22 and a second conveying guide rail 23. The PCB board 2 is placed between the first conveying guide rail 22 and the second conveying guide rail 23 during conveyance. The first conveying guide rail 22 is fixed on the workbench 1, and the second conveying guide rail 23 is slidably installed on the workbench 1 through a slide rail assembly 24 to adjust the distance between the first conveying guide rail 22 and the second conveying guide rail 23 to accommodate PCB boards 2 of different widths; the slide rail assembly 24 is a combination of a slide rail and a slider; the driving wheel 19, the driven wheel 20 and the transmission belt 21 correspond to the first conveying guide rail 22 and the second conveying guide rail 23 respectively.

[0035] The working principle of the PCB board positioning mechanism of this plug-in machine:

[0036] 1. When the system sends a request signal to the host computer, the PCB board 2 enters the workbench 1 through the external loader. The external loader moves downward to align with the conveyor guide rail 3. The first driver 4, installed on the external loader guide rail, extends the piston rod 9 and moves downward with the external loader. The piston rod 9 acts on the action member 6, which presses down, driving the rotating rod 5 to rotate upward to the maximum angle.

[0037] 2. The limiting piece 11 is fully lifted, and the second driver 17 drives the transmission belt 21 to transport the PCB board 2 from left to right. The PCB board 2 passes through the conveying guide rail 3 smoothly (the first PCB board 2 is not inserted with the spring piece);

[0038] 3. After the system detects that there is no plate in the conveyor guide rail 3, the first driver 4 is activated, and the piston rod 9 retracts and contracts. At this time, the rotating rod 5 is reset and rotated downward by a certain angle under the action of the first elastic member 8, and the limit plate 11 returns to the positioning angle;

[0039] 4. The PCB board 2 enters the workbench 1 through the external loader. The second driver 17 drives the transmission belt 21 to transport the PCB board 2 from left to right to the limit plate 11. When the system receives the signal that the PCB board 2 is in place, the second driver 17 stops working.

[0040] 5. The external loader drives the first driver 4 upward to release the action member 6. The stored energy of the first elastic member 8 drives the rotating rod 5 to fully return downward and rotate. Since the elastic force of the first elastic member 8 is greater than the elastic force of the second elastic member 12, the second elastic member 12 is passively compressed until the positioning column 15 (tapered portion 26) of the positioning claw 14 is inserted into the positioning hole 16 of the PCB board 2, completing the precise positioning of the PCB board 2; then the chuck device moves the spring piece to above the PCB board 2, and the chuck device moves downward to insert the spring piece onto the PCB board 2; then the chuck device resets, the external loader drives the first driver 4 downward, and the first driver 4 extends the piston rod 9 to fully lift the limit plate 11 and the positioning claw 14, and the second driver 17 drives the transmission belt 21 to transport the PCB board 2 from left to right, and the PCB board 2 passes through the conveying guide rail 3; then steps 3 to 5 are repeated.

[0041] The above is a preferred embodiment of the present invention, which illustrates and describes the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A PCB board positioning mechanism for an insertion machine, comprising a workbench (1), characterized in that: The workbench (1) is provided with a conveying guide rail (3) for conveying a PCB board (2), a rotating rod assembly and a first driver (4), a limit assembly and a positioning assembly being provided on the rotating rod assembly, and the first driver (4) being installed on an external loading machine. The external loading machine drives the first driver (4) downward and the output end of the first driver (4) extends, acting on the rotating rod assembly, so that the rotating rod assembly drives the limit assembly and the positioning assembly to rise. When the output end of the first driver (4) retracts, the rotating rod assembly resets and rotates a certain angle, so as to drive the limit assembly and the positioning assembly to descend. When the PCB board (2) is conveyed to a corresponding position, it acts on the limit assembly. When the external loading machine drives the first driver (4) upward, the rotating rod assembly completely resets and rotates, so as to drive the limit assembly and the positioning assembly to descend to a maximum position, thereby causing the positioning assembly to act on the PCB board (2).

2. The PCB board positioning mechanism of the insertion machine according to claim 1, characterized in that: The rotating rod assembly includes a rotating rod (5) and an action member (6) installed at one end of the rotating rod (5). The rotating rod (5) is rotatably arranged on the conveying guide rail (3). The external upper plate machine drives the first driver (4) downward and the output end of the first driver (4) extends to act on the action member (6) to rotate the rotating rod (5).

3. The PCB board positioning mechanism of the insertion machine according to claim 2, characterized in that: A plurality of fixed seats (7) are provided on the conveying guide rail (3), and the rotating rod (5) is rotatably mounted on the fixed seat (7). The rotating rod assembly further comprises a first elastic member (8) sleeved on the rotating rod (5), and the first elastic member (8) is provided between the action member (6) and the fixed seat (7). The rotating rod assembly is reset and rotated under the elastic force of the first elastic member (8).

4. The PCB board positioning mechanism of the insertion machine according to claim 3, characterized in that: The first driver (4) is a cylinder, on which a piston rod (9) is telescopically provided. When the piston rod (9) is extended, it acts on the action member (6).

5. The PCB board positioning mechanism of the insertion machine according to claim 3, characterized in that: The limiting assembly comprises a bracket (10) and a limiting piece (11), wherein the bracket (10) is sleeved on the rotating rod (5), and the limiting piece (11) is mounted on the bracket (10). After the rotating rod (5) drives the limiting assembly to descend, the PCB board (2) acts on the limiting piece (11) when it is transported to the corresponding position.

6. The PCB board positioning mechanism of the insertion machine according to claim 5, characterized in that: The limiting assembly further comprises a second elastic member (12), the second elastic member (12) being sleeved on the rotating rod (5), and the second elastic member (12) being arranged between the bracket (10) and the conveying guide rail (3).

7. The PCB board positioning mechanism of the insertion machine according to claim 3, characterized in that: The positioning assembly includes a mounting seat (13) and a positioning claw (14), wherein the mounting seat (13) is sleeved on the rotating rod (5), and the positioning claw (14) is mounted on the mounting seat (13). When the rotating rod (5) drives the positioning assembly to descend to the maximum position, the positioning claw (14) acts on the PCB board (2).

8. The PCB board positioning mechanism of the insertion machine according to claim 7, characterized in that: A positioning column (15) is provided on the positioning claw (14), and a positioning hole (16) is provided on the PCB board (2). When the positioning claw (14) acts on the PCB board (2), the positioning column (15) and the positioning hole (16) are positioned and matched.

9. The PCB board positioning mechanism of the insertion machine according to claim 1, characterized in that: The invention also includes a driving device, which includes a second driver (17), a rotating shaft (18), a driving wheel (19), a driven wheel (20) and a transmission belt (21). The second driver (17) drives the rotating shaft (18). The driving wheel (19) is installed on the rotating shaft (18). The transmission belt (21) is arranged between the driving wheel (19) and the driven wheel (20). The transmission belt (21) is arranged in the conveying guide rail (3). When the transmission belt (21) moves, it conveys the PCB board (2).

10. The PCB board positioning mechanism of the insertion machine according to claim 9, characterized in that: The conveying guide rail (3) includes a first conveying guide rail (22) and a second conveying guide rail (23). The PCB board (2) is placed between the first conveying guide rail (22) and the second conveying guide rail (23) during conveyance. The first conveying guide rail (22) is fixed on the workbench (1). The second conveying guide rail (23) is slidably mounted on the workbench (1) via a slide rail assembly (24) to adjust the distance between the first conveying guide rail (22) and the second conveying guide rail (23).

Images