Automatic jacking jig for circuit board production

Abstract

The utility model discloses an automatic jacking jig for circuit board production, which comprises a working table, a groove is arranged on the upper end face of the working table, and a jacking plate is arranged at the middle position in the groove; the driving seat is arranged below the working table, the driving seat and the working table are fixed through bolts, a limiting sliding groove is formed in the driving seat, a lifting column is installed in the limiting sliding groove, and the lifting column is in sliding connection with the limiting sliding groove; the clamping plates are arranged on the two sides of the jacking plate, a transmission cavity is formed in the jacking plate, a transmission gear is installed at the upper end of the interior of the transmission cavity, the transmission gear is rotationally connected with the jacking plate, movable rods are installed on the front side and the rear side of the transmission gear, one end of each movable rod is fixed to the corresponding clamping plate, and the other end of each movable rod is fixed to the corresponding clamping plate. Tooth grooves are formed in the inner sides of the movable rods and engaged with the transmission gears, and the jacking jig can improve the clamping convenience on the premise that the moving stability of the circuit board is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board production, in particular to an automatic lifting fixture for circuit board production. Background Art

[0002] With the rapid development of modern electronic technology, circuit boards, as a crucial component of electronic equipment, are subject to increasingly stringent production processes and quality requirements. The production of circuit boards involves multiple steps, such as welding, testing, and assembly, which often require precise positioning and stable operation of the boards. Lifting fixtures for circuit board production are a type of auxiliary equipment specifically designed for use during the processing, testing, or assembly of circuit boards. Their introduction has greatly improved the automation and efficiency of circuit board production, while reducing the complexity and error rate of manual operations. Through a precise lifting mechanism, the fixture can smoothly raise or lower the circuit board to the desired position, facilitating subsequent welding, testing, and other processes.

[0003] For example, the Chinese patent application CN217573113U, entitled "An Adjustable Fixture for Circuit Board Production," includes a mounting plate, a top plate, a clamping plate, a guide slide groove, and side plates provided on the mounting plate. A guide slide barrel slides in the guide slide groove, a screw is threadedly connected to the guide slide barrel, an adjustment disc is provided on the screw, and a dial groove group is provided on the adjustment disc. The top plate is provided at the top of the screw, and the side plates are provided with a control switch and a cylinder. The piston rod of the cylinder is provided with a clamping seat, a screw pin is threadedly connected to the clamping seat, and a bearing is provided on the clamping plate, which is sleeved with the screw pin. The flexible circuit board can be clamped and straightened stably as a whole, and the bottom sliding adjustment can be achieved to support the area where drilling is required.

[0004] Although the above-mentioned existing technology can realize the lifting of the circuit board, the clamping structure is relatively complicated. On the one hand, it is inconvenient to operate, which affects the processing efficiency. On the other hand, it has poor stability and is prone to instability during the movement of the circuit board. Therefore, it does not meet the existing needs. In this regard, we propose an automatic lifting fixture for circuit board production. Utility Model Content

[0005] The purpose of the present utility model is to provide an automatic lifting fixture for circuit board production, so as to solve the problem raised in the above background technology of how to improve the clamping convenience of the lifting fixture while improving the moving stability of the circuit board.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: an automatic lifting fixture for circuit board production, comprising a workbench, wherein the upper end surface of the workbench is provided with a groove, and a lifting plate is installed at the middle position inside the groove; and further comprising:

[0007] A driving seat is provided below the workbench, and the driving seat and the workbench are fixed by bolts. A limiting slide groove is provided inside the driving seat, and a lifting column is installed inside the limiting slide groove. The lifting column is slidably connected to the limiting slide groove, and the upper end of the lifting column is fixed to the bottom of the lifting plate;

[0008] The clamping plates are arranged on both sides of the lifting plate, and a transmission cavity is provided inside the lifting plate. A transmission gear is installed at the upper end of the transmission cavity, and the transmission gear is rotatably connected to the lifting plate. Movable rods are installed on the front and rear sides of the transmission gear, and one end of the movable rod is fixed to the clamping plate. The inner side of the movable rod is provided with a tooth groove, and the tooth groove is engaged with the transmission gear.

[0009] Preferably, a first servo motor is provided below the limiting slide groove, and the first servo motor is fixed to the driving seat, and a stud is installed on the output shaft of the first servo motor, the stud extends to the inside of the lifting column, and the stud and the lifting column are matched through threads.

[0010] Preferably, an infrared sensor is embedded in the upper end of the clamping plate, an output end of the infrared sensor is connected to a processor, and an output end of the processor is connected to the first servo motor.

[0011] Preferably, a worm wheel is installed at the lower end of the transmission cavity, and the shaft of the worm wheel is fixed to the transmission gear. A worm is installed on one side of the worm wheel, and the worm is adapted to the worm wheel. A second servo motor is installed at one end of the worm.

[0012] Preferably, support legs are installed at the four corners of the bottom of the workbench, and the support legs are connected to the workbench through threads.

[0013] Preferably, a rubber pad is adhered and fixed to the upper end of the inner side of the clamping plate.

[0014] Preferably, the clamping plate is flush with the horizontal plane of the workbench in the retracted state.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. The utility model is provided with a flexible clamping mechanism, and the circuit board is placed on the upper end of the lifting plate through a mechanical arm. By turning on the second servo motor, its output shaft drives the worm to rotate, and the contact surface between the worm and the worm wheel forms a spiral friction transmission surface. The rotation of the worm drives the worm wheel to rotate, and then the worm wheel drives the transmission gear to rotate. Under the engagement of the transmission gear and the inner tooth groove of the movable rod, the clamping plate on one side is driven by the movable rod to synchronously retract toward the lifting plate, thereby clamping and fixing the circuit board. On the one hand, this clamping method utilizes the self-locking property of the worm and the worm wheel to improve the fixing effect of the clamping plate in this position, avoiding the instability of the circuit board during movement. On the other hand, the two clamping plates extend or retract synchronously, which can quickly form the positioning adjustment of the circuit board, effectively improving convenience.

[0017] 2. The utility model uses a flexible lifting mechanism. By turning on the first servo motor, its output shaft drives the stud to rotate. Under the friction between its external thread and the screw hole in the lifting column, the limiting slide guides the lifting column, thereby driving the lifting plate to move vertically. Then the circuit board positioned by the clamping plate can move accordingly, so as to cooperate with the robotic arm to perform the transfer action. The lifting height and position of the lifting mechanism can be precisely adjusted to ensure that the circuit board can be accurately aligned with the relevant equipment or fixture on the workbench. At the same time, the structural design is stable and can withstand the weight of the circuit board and the force during operation, ensuring that the circuit board will not shake or tilt during the lifting process.

[0018] 3. The utility model provides an embedded infrared sensor at the upper end of the clamping plate. The transmitter will emit a beam of infrared signal. If it encounters an object, the infrared will be reflected back by the object. As the distance shortens, the intensity of the reflected infrared signal will gradually increase. The processing circuit inside the infrared sensor will monitor the received infrared signal intensity in real time and perform corresponding analysis and judgment. When it is lower than the set value, it indicates that the circuit board is about to collide with the object. At this time, the lifting column is quickly lowered by controlling the first servo motor to achieve the purpose of protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional diagram of the utility model;

[0020] Figure 2 This is a schematic diagram of the internal structure of the utility model;

[0021] Figure 3 This is a schematic diagram of the connection structure between the transmission gear and the movable rod of the utility model;

[0022] Figure 4 This is a schematic diagram of the transmission gear drive structure of the utility model;

[0023] Figure 5 For the utility model Figure 1 A partial enlarged view of area A in the middle.

[0024] In the figure: 1. Workbench; 2. Support leg; 3. Groove; 4. Lifting plate; 5. Clamping plate; 6. Movable rod; 7. Drive seat; 8. First servo motor; 9. Limiting slide; 10. Lifting column; 11. Stud; 12. Tooth groove; 13. Transmission gear; 14. Transmission cavity; 15. Worm gear; 16. Worm; 17. Second servo motor; 18. Infrared sensor. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0026] See also Figure 1-5 The present invention provides an embodiment of an automatic lifting fixture for circuit board production, comprising a workbench 1, wherein the upper end surface of the workbench 1 is provided with a groove 3, and a lifting plate 4 is installed at the middle position inside the groove 3; and further comprising:

[0027] The driving seat 7 is arranged below the workbench 1 and is fixed to the workbench 1 by bolts. A limiting chute 9 is provided inside the driving seat 7. A lifting column 10 is installed inside the limiting chute 9. The lifting column 10 is slidably connected to the limiting chute 9, and the upper end of the lifting column 10 is fixed to the bottom of the lifting plate 4;

[0028] The clamping plate 5 is arranged on both sides of the lifting plate 4, and a transmission cavity 14 is provided inside the lifting plate 4. A transmission gear 13 is installed at the upper end of the transmission cavity 14, and the transmission gear 13 is rotatably connected to the lifting plate 4. Movable rods 6 are installed on the front and rear sides of the transmission gear 13, and one end of the movable rod 6 is fixed to the clamping plate 5. A tooth groove 12 is provided on the inner side of the movable rod 6, and the tooth groove 12 is engaged with the transmission gear 13.

[0029] During use, the circuit board is placed on the upper end of the lifting plate 4 by the robotic arm, and the second servo motor 17 is turned on, and its output shaft drives the worm 16 to rotate. The contact surface between the worm 16 and the worm wheel 15 forms a spiral friction transmission surface. The rotation of the worm 16 drives the worm wheel 15 to rotate, and then the worm wheel 15 drives the transmission gear 13 to rotate. Under the engagement of the transmission gear 13 and the inner tooth groove of the movable rod 6, the clamping plate 5 on one side is driven by the movable rod 6 to synchronously shrink toward the lifting plate 4, thereby clamping and fixing the circuit board.

[0030] See also Figure 2A first servo motor 8 is provided below the limiting slide groove 9, and the first servo motor 8 is fixed to the driving seat 7. A stud 11 is installed on the output shaft of the first servo motor 8. The stud 11 extends to the inside of the lifting column 10, and the stud 11 and the lifting column 10 are matched through threads. The lifting height and position of the jacking mechanism can be precisely adjusted to ensure that the circuit board can be accurately aligned with the relevant equipment or fixtures on the workbench. At the same time, the structural design is stable and can withstand the weight of the circuit board and the force during operation, ensuring that the circuit board will not shake or tilt during the lifting process.

[0031] See also Figure 5 An infrared sensor 18 is embedded in the upper end of the clamping plate 5. The output end of the infrared sensor 18 is connected to the processor, and the output end of the processor is connected to the first servo motor 8. By controlling the first servo motor 8, the lifting column 10 is quickly lowered to achieve the purpose of protection.

[0032] See also Figure 4 A worm gear 15 is installed at the lower end of the transmission cavity 14, and the shaft of the worm gear 15 is fixed to the transmission gear 13. A worm 16 is installed on one side of the worm gear 15, and the worm 16 is adapted to the worm gear 15. A second servo motor 17 is installed at one end of the worm 16. On the one hand, this clamping method utilizes the self-locking property of the worm 16 and the worm gear 15 to improve the fixing effect of the clamping plate 5 in this position, avoiding the instability of the circuit board during the movement. On the other hand, the two clamping plates 5 extend or contract synchronously, which can quickly form the positioning adjustment of the circuit board, effectively improving the convenience.

[0033] See also Figure 1 Support legs 2 are installed at the four corners of the bottom of the workbench 1, and the support legs 2 are connected to the workbench 1 through threads to improve the support stability.

[0034] Furthermore, rubber pads are bonded and fixed to the upper ends of the inner sides of the clamping plates 5 to improve the protection effect on the circuit board.

[0035] See also Figure 2 , the clamping plate 5 is flush with the horizontal plane where the workbench 1 is located in the retracted state.

[0036] Working principle: When in use, by turning on the first servo motor 8, its output shaft drives the stud 11 to rotate. Under the friction between its external thread and the screw hole inside the lifting column 10, the limiting slide 9 guides the lifting column 10, thereby driving the lifting plate 4 to move vertically. Then the circuit board positioned by the clamping plate can move accordingly, so as to cooperate with the robotic arm to perform the transfer action. The infrared sensor 18 will emit a beam of infrared signal. If it encounters an object, the infrared light will be reflected back by the object. As the distance shortens, the intensity of the reflected infrared signal will gradually increase. The processing circuit inside the infrared sensor 18 will monitor the received infrared signal intensity in real time, and perform corresponding analysis and judgment. When it is lower than the set value, it means that the circuit board is about to collide with the object. At this time, the lifting column 10 is quickly lowered by controlling the first servo motor 8 to achieve the purpose of protection.

[0037] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. An automatic lifting fixture for circuit board production, comprising a workbench (1), wherein the upper end surface of the workbench (1) is provided with a groove (3), and a lifting plate (4) is installed at the middle position inside the groove (3); Features: Also includes: A driving seat (7) is arranged below the workbench (1), and the driving seat (7) and the workbench (1) are fixed by bolts, a limiting slide groove (9) is arranged inside the driving seat (7), a lifting column (10) is installed inside the limiting slide groove (9), the lifting column (10) is slidably connected to the limiting slide groove (9), and the upper end of the lifting column (10) is fixed to the bottom of the lifting plate (4); A clamping plate (5) is arranged on both sides of the lifting plate (4); a transmission cavity (14) is arranged inside the lifting plate (4); a transmission gear (13) is installed at the upper end of the transmission cavity (14), and the transmission gear (13) is rotatably connected to the lifting plate (4); movable rods (6) are installed on the front and rear sides of the transmission gear (13), and one end of the movable rod (6) is fixed to the clamping plate (5); a tooth groove (12) is arranged on the inner side of the movable rod (6), and the tooth groove (12) is meshed with the transmission gear (13).

2. The automatic lifting fixture for circuit board production according to claim 1 is characterized in that: A first servo motor (8) is arranged below the limiting slide groove (9), and the first servo motor (8) is fixed to the driving seat (7). A stud (11) is installed on the output shaft of the first servo motor (8), and the stud (11) extends into the interior of the lifting column (10), and the stud (11) and the lifting column (10) are matched by threads.

3. The automatic lifting fixture for circuit board production according to claim 2 is characterized in that: An infrared sensor (18) is embedded in the upper end of the clamping plate (5), the output end of the infrared sensor (18) is connected to the processor, and the output end of the processor is connected to the first servo motor (8).

4. The automatic lifting fixture for circuit board production according to claim 1 is characterized in that: A worm wheel (15) is installed at the lower end of the transmission chamber (14), and the shaft of the worm wheel (15) is fixed to the transmission gear (13). A worm (16) is installed on one side of the worm wheel (15), and the worm (16) is adapted to the worm wheel (15). A second servo motor (17) is installed at one end of the worm (16).

5. The automatic lifting fixture for circuit board production according to claim 1 is characterized in that: Support legs (2) are installed at the four corners of the bottom of the workbench (1), and the support legs (2) are connected to the workbench (1) through threads.

6. The automatic lifting fixture for circuit board production according to claim 1 is characterized in that: The upper ends of the inner sides of the clamping plates (5) are all bonded and fixed with rubber pads.

7. The automatic lifting fixture for circuit board production according to claim 1 is characterized by: The clamping plate (5) is flush with the horizontal plane where the workbench (1) is located in the retracted state.

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