Pin pressing device for MOS (Metal Oxide Semiconductor) tube

Abstract

The utility model discloses an MOS (Metal Oxide Semiconductor) tube pin pressing device, which comprises a rack, the front side face of the upper end of the rack is in sliding connection with a movable frame, the lower end of the movable frame is in sliding connection with a guide rod, a supporting plate is arranged on the lower surface of the guide rod, the outer arc face of the guide rod is movably sleeved with a spring, the spring is located between the supporting plate and the movable frame, and a pressing head base is arranged on the lower surface of the supporting plate. The lower surface of the movable frame is provided with a positioning unit, the positioning unit and the supporting plate are arranged in a matched mode, the upper end of the rack is provided with an electric push rod, and the telescopic end of the electric push rod is fixedly connected with the upper surface of the movable frame. And the use cost is low, the structure is simple, and the use convenience is good.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit board production, in particular to a MOS tube pin pressing device. Background Art

[0002] MOS tube is a field effect transistor, that is, it converts the change of input voltage into the change of output current. It is widely used in circuit design such as switching power supply and motor controller. MOS tube generally has pins. In order to facilitate the welding of MOS tube on circuit board, the pins of MOS tube mostly need to be bent and then welded. During the welding process, it is necessary to use MOS tube pin pressing device to squeeze the upper surface of MOS tube to make its pin close to the circuit board for welding. The existing MOS tube pin pressing device generally directly uses a power device to squeeze the MOS tube to achieve pressing, which will have the disadvantage of not being able to adjust the pressure. Alternatively, a pressure sensor is used to detect the pressure to achieve pressure control, and the force control effect is good, but the pressure sensor is expensive and increases the cost of use. Utility Model Content

[0003] The technical problem to be solved by the utility model is to overcome the existing defects and provide a MOS tube pin pressing device, which uses a spring to press the MOS tube pin and adjusts the position of the proximity switch, thereby controlling the compression amount of the spring, thereby facilitating the adjustment of the pressure and having a low cost of use, a simple structure and good convenience of use, and can effectively solve the problems in the background technology.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a MOS tube pin pressing device, comprising a frame;

[0005] Frame: The front side surface of its upper end is slidably connected to a mobile frame, the lower end of the mobile frame is slidably connected to a guide rod, the lower surface of the guide rod is provided with a support plate, a spring is movably sleeved on the outer arc surface of the guide rod, the spring is located between the support plate and the mobile frame, the lower surface of the support plate is provided with a pressure head seat, the lower end of the pressure head seat is movably plugged with a pressure head, the lower surface of the mobile frame is provided with a positioning unit, the positioning unit and the support plate are arranged in coordination, the spring is used to press the MOS tube pin, and the position of the proximity switch is adjusted to control the compression amount of the spring, thereby facilitating the adjustment of the pressure and having low cost of use, simple structure and good convenience of use.

[0006] Furthermore, an electric push rod is provided at the upper end of the frame, the telescopic end of the electric push rod is fixedly connected to the upper surface of the mobile frame, a controller is provided at the rear end of the mobile frame, the input end of the electric push rod is electrically connected to the output end of the controller, and the input end of the controller is electrically connected to an external power supply to generate pressure.

[0007] Furthermore, the positioning unit includes a rectangular plate, a movable seat and a proximity switch, the rectangular plate is arranged on the lower surface of the movable frame, the lower end of the rectangular plate is slidably connected to the support plate, the middle part of the rectangular plate is slidably connected to the movable seat, the front side surface of the movable seat is provided with a proximity switch, the proximity switch is arranged in coordination with the support plate, and the output end of the proximity switch is electrically connected to the input end of the controller, so as to conveniently control the stop of the electric push rod.

[0008] Furthermore, the positioning unit also includes a small spring sheet and an arc groove 1. The small spring sheet is arranged on the left side of the movable seat. The left side of the rectangular plate is provided with an evenly distributed arc groove 1. The upper end of the small spring sheet is matched with the laterally corresponding arc groove 1 to facilitate the positioning of the movable seat.

[0009] Furthermore, the positioning unit also includes scale lines, which are arranged on the front side of the rectangular plate to facilitate the determination of the position of the moving seat.

[0010] Furthermore, the left ends of the front and rear side surfaces of the movable seat are each provided with an arc groove 2 to facilitate the gripping of the movable seat.

[0011] Furthermore, a large spring sheet is provided on the front side of the pressure head seat, and the lower end of the large spring sheet is movably engaged with the large arc groove at the upper end of the front side of the pressure head, so as to facilitate the fixation of the pressure head.

[0012] Compared with the prior art, the beneficial effects of the utility model are: the MOS tube pin pressing device has the following advantages:

[0013] By using a spring to press the MOS tube pin and adjusting the position of the proximity switch, the compression amount of the spring can be controlled, thereby facilitating the adjustment of the pressure and having low cost, simple structure and good convenience. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a cross-sectional structural schematic diagram of the positioning unit of the utility model;

[0016] Figure 3 This is an enlarged structural diagram of the utility model at A;

[0017] Figure 4 It is a schematic diagram of the enlarged structure of point B of the utility model.

[0018] In the figure: 1 frame, 2 moving frame, 3 guide rod, 4 support plate, 5 pressure head seat, 6 pressure head, 7 spring, 8 positioning unit, 81 rectangular plate, 82 moving seat, 83 proximity switch, 84 small spring sheet, 85 arc groove one, 86 scale line, 9 arc groove two, 10 large spring sheet, 11 electric push rod, 12 controller. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-4 , this embodiment provides a technical solution: a MOS tube pin pressing device, including a frame 1;

[0021] Frame 1: The front side surface of its upper end is slidably connected with a moving frame 2, and the frame 1 is installed to the rear side of the MOS tube production line. The lower end of the moving frame 2 is slidably connected with a guide rod 3, and a support plate 4 is provided on the lower surface of the guide rod 3. A spring 7 is movably sleeved on the outer arc surface of the guide rod 3, and the spring 7 is located between the support plate 4 and the moving frame 2. A pressure head seat 5 is provided on the lower surface of the support plate 4, and a pressure head 6 is movably inserted at the lower end of the pressure head seat 5. During the working process, the circuit board and the MOS tube move to the bottom of the pressure head 6, and the moving frame 2 drives the guide rod 3, the support plate 4, the pressure head seat 5 and the pressure head 6 to move downward synchronously. When the pressure head 6 contacts the upper surface of the MOS tube, it will block the downward movement of the pressure head 6, the pressure head seat 5, the support plate 4 and the guide rod 3, and the support plate 4 will compress the spring 7. During the compression process, the spring 7 will also pass The support plate 4, the pressure head seat 5 and the pressure head 6 apply pressure to the MOS tube, thereby facilitating the pressing of the MOS tube pins and the circuit board. A positioning unit 8 is provided on the lower surface of the mobile frame 2, and the positioning unit 8 is arranged in cooperation with the support plate 4. An electric push rod 11 is provided at the upper end of the frame 1, and the telescopic end of the electric push rod 11 is fixedly connected to the upper surface of the mobile frame 2. A controller 12 is provided at the rear end of the mobile frame 2, and the input end of the electric push rod 11 is electrically connected to the output end of the controller 12, and the input end of the controller 12 is electrically connected to an external power supply. The telescopic end of the electric push rod 11 extends to drive the mobile frame 2 to slide downward along the frame 1. A large spring sheet 10 is provided on the front side of the pressure head seat 5, and the lower end of the large spring sheet 10 is movably engaged with the large arc groove at the upper end of the front side of the pressure head 6, and the large spring sheet 10 can position the pressure head 6;

[0022] Wherein: the positioning unit 8 includes a rectangular plate 81, a moving seat 82 and a proximity switch 83, the rectangular plate 81 is arranged on the lower surface of the moving frame 2, the lower end of the rectangular plate 81 is slidably connected to the support plate 4, the middle part of the rectangular plate 81 is slidably connected to the moving seat 82, the circular axis in the middle of the moving seat 82 is slidably connected to the long sliding hole in the middle of the rectangular plate 81, and the front side of the moving seat 82 is provided with a proximity switch 83, the proximity switch 83 is arranged in coordination with the support plate 4, the output end of the proximity switch 83 is electrically connected to the input end of the controller 12, as the support plate 4 moves downward, the rectangular plate 81 drives the proximity switch 83 to move downward through the moving seat 82, and then the proximity switch 83 will sense the support plate 4, and the proximity switch 83 sends an electrical signal to the controller 12, the positioning unit 8 also includes a small spring sheet 84 and an arc groove 85, the small spring sheet 84 is arranged on the left side of the moving seat 82, the left side of the rectangular plate 81 The side surface is provided with evenly distributed arc grooves 85, and the upper end of the small spring piece 84 is matched with the arc groove 85 corresponding to the transverse direction. The movable seat 82 drives the small spring piece 84 and the proximity switch 83 to move synchronously, so that the position of the proximity switch 83 can be adjusted, which is convenient for controlling the compression amount of the spring 7. The upper end of the small spring piece 84 slides relative to the left side of the rectangular plate 81. At the same time, during the movement, the small spring piece 84 will undergo elastic deformation, which can be conveniently engaged with the arc groove 85 to position the proximity switch 83. The positioning unit 8 also includes scale lines 86, which are arranged on the front side surface of the rectangular plate 81. The scale lines 86 facilitate the determination of the position of the movable seat 82. The left ends of the front and rear sides of the movable seat 82 are provided with arc grooves 9. The movable seat 82 can be pinched with two fingers at the position of the arc groove 9 to move the movable seat 82 up and down with force.

[0023] The working principle of a MOS tube pin pressing device provided by the utility model is as follows: when in use, the frame 1 is installed to the rear side of the MOS tube production line. During the working process, the circuit board and the MOS tube are moved to the bottom of the pressure head 6. When the pins are pressed, the controller 12 is adjusted, and the telescopic end of the electric push rod 11 is extended to drive the moving frame 2 to slide downward along the frame 1. The moving frame 2 drives the guide rod 3, the support plate 4, the pressure head seat 5 and the pressure head 6 to move downward synchronously. When the pressure head 6 contacts the upper surface of the MOS tube, it will block the pressure head 6, the pressure head seat 5, the support plate 4 and the guide rod 3 from moving downward. The support plate 4 will compress the spring 7. At the same time, as the support plate 4 moves downward, the rectangular plate 81 drives the proximity switch 83 to move downward through the moving seat 82, and then the proximity switch 83 will sense the support plate 4, and then the proximity switch 83 will send an electrical signal to the controller 12, and the controller 12 controls the electric push rod 11 to continue to extend. The force effect is mutual, and then the spring 7 will also pass through the support plate 4, the pressure head seat 5 and the guide rod 3 during the compression process. The pressure head 6 applies pressure to the MOS tube, thereby facilitating the pressing of the MOS tube pin and the circuit board. At the same time, during use, the compression length of the spring 7 can be adjusted to facilitate the adjustment of the pressure. During adjustment, the movable seat 82 can be pinched at the position of the arc groove 29 with two fingers, and the movable seat 82 can be moved up and down with force. The movable seat 82 drives the small spring piece 84 and the proximity switch 83 to move synchronously, and then the position of the proximity switch 83 can be adjusted to facilitate the control of the compression amount of the spring 7. The upper end of the small spring piece 84 slides relative to the left side of the rectangular plate 81. At the same time, during the movement, the small spring piece 84 will undergo elastic deformation, which can be conveniently engaged with the arc groove 1 85 to position the proximity switch 83. At the same time, the pressure head 6 can be replaced according to the size of the MOS tube. During the disassembly and assembly process, the large arc groove at the upper end of the front side of the pressure head 6 is misaligned with the lower end of the large spring piece 10, and the large spring piece 10 will undergo elastic deformation, and the large spring piece 10 can position the pressure head 6.

[0024] It is worth noting that the proximity switch 83, the electric push rod 11 and the controller 12 disclosed in the above embodiments can be freely configured according to the actual application scenario. The proximity switch 83 can use a proximity switch of model TL-Q5MC1, the electric push rod 11 can use an electric push rod of model ANT-52, and the controller 12 can use a controller of model FX3U-16MR / ES-A. The controller 12 controls the operation of the proximity switch 83 and the electric push rod 11 using methods commonly used in the prior art.

[0025] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A MOS tube pin pressing device, characterized in that: comprising a frame (1); The frame (1) has a front side surface at its upper end slidably connected to a movable frame (2), a lower end of the movable frame (2) slidably connected to a guide rod (3), a lower surface of the guide rod (3) is provided with a support plate (4), a spring (7) is movably sleeved on the outer arc surface of the guide rod (3), the spring (7) is located between the support plate (4) and the movable frame (2), a pressure head seat (5) is provided on the lower surface of the support plate (4), a pressure head (6) is movably inserted at the lower end of the pressure head seat (5), and a positioning unit (8) is provided on the lower surface of the movable frame (2), and the positioning unit (8) is arranged in coordination with the support plate (4).

2. A MOS tube pin pressing device according to claim 1, characterized in that: An electric push rod (11) is provided at the upper end of the frame (1), the telescopic end of the electric push rod (11) is fixedly connected to the upper surface of the mobile frame (2), a controller (12) is provided at the rear end of the mobile frame (2), the input end of the electric push rod (11) is electrically connected to the output end of the controller (12), and the input end of the controller (12) is electrically connected to an external power supply.

3. A MOS tube pin pressing device according to claim 2, characterized in that: The positioning unit (8) comprises a rectangular plate (81), a movable seat (82) and a proximity switch (83); the rectangular plate (81) is arranged on the lower surface of the movable frame (2); the lower end of the rectangular plate (81) is slidably connected to the support plate (4); the middle part of the rectangular plate (81) is slidably connected to the movable seat (82); the front side surface of the movable seat (82) is provided with a proximity switch (83); the proximity switch (83) is arranged in coordination with the support plate (4); the output end of the proximity switch (83) is electrically connected to the input end of the controller (12).

4. A MOS tube pin pressing device according to claim 3, characterized in that: The positioning unit (8) further comprises a small spring sheet (84) and an arc-shaped groove (85), wherein the small spring sheet (84) is arranged on the left side of the movable seat (82), and the left side of the rectangular plate (81) is provided with evenly distributed arc-shaped grooves (85), and the upper end of the small spring sheet (84) is matched with the arc-shaped groove (85) corresponding to the horizontal direction.

5. The MOS tube pin pressing device according to claim 3, characterized in that: The positioning unit (8) further comprises a scale line (86), and the scale line (86) is arranged on the front side of the rectangular plate (81).

6. The MOS tube pin pressing device according to claim 3, characterized in that: The left ends of the front and rear side surfaces of the movable seat (82) are both provided with arc-shaped grooves (9).

7. The MOS tube pin pressing device according to claim 1, characterized in that: A large spring sheet (10) is provided on the front side of the pressure head seat (5), and the lower end of the large spring sheet (10) is movably engaged with the large arc groove at the upper end of the front side of the pressure head (6).

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