Fixing device for SMT surface mounting

Abstract

The utility model discloses a fixing device for SMT surface mounting, which belongs to the technical field of SMT production, and comprises a support plate and two C-shaped support frames, the support plate is used for providing support for SMT surface mounting of a printed circuit board, a sliding rod is welded on the inner side wall of each support frame, the sliding rod is connected with two sliding blocks in a sliding manner, the side surfaces of the two sliding blocks are connected with the support frames in a sliding manner, and the sliding blocks are connected with the support frames in a sliding manner. An L-shaped connecting frame is welded to the top faces of the sliding blocks, a first electric telescopic rod is installed on the inner top wall of the connecting frame, a fixing plate is welded to the movable end of the first electric telescopic rod, a rubber plate used for vertically extruding the SMT printed circuit board is fixedly connected to the bottom face of the fixing plate, and the bottom faces of the four sliding blocks are in sliding friction contact with the supporting plate. According to the SMT surface mounting device, the situation that SMT surface mounting is inconvenient to carry out on the part, shielded by the rubber plate, of the printed circuit board is prevented, and the SMT surface mounting efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of SMT production, in particular to a fixing device for SMT surface mounting. Background Art

[0002] SMT is a circuit assembly technology that mounts pinless or short-lead surface-mount components on the surface of a printed circuit board or other substrate, and assembles them by soldering through methods such as reflow soldering or dip soldering. During the SMT surface mounting process, a fixture is required to clamp and fix the printed circuit board. When clamping and fixing the printed circuit board with existing fixtures, it is not convenient to adjust the clamping position, resulting in the clamping position being blocked, making it inconvenient to perform SMT surface mounting and reducing the efficiency of SMT surface mounting.

[0003] In the related art, a search revealed a solution for an SMT surface mounting fixing device (Announcement No. CN220755368U), which includes a device base, a movable structure installed in the middle position of the device base, and a fixed structure installed on the top of the movable structure, support plates fixed on the front and rear sides of the device base, and a PCB board installed in the middle position of the support plate, a bracket fixed on the bottom of the device base, and a cooling fan provided inside the device base, the movable structure includes a sleeve plate, a rotating rod, a first threaded rod, a threaded sleeve block and a rotating shaft, a sleeve plate is provided on the outer wall of the movable structure, and a rotating rod passes through the middle position of the sleeve plate; the utility model can be applied to PCB boards of different sizes, specifications and shapes, and has better stability when fixed and is not easy to move, but the device is not convenient for adjusting the clamping position of the printed circuit board, resulting in that the clamped part of the printed circuit board is not convenient for SMT surface mounting, thereby reducing the efficiency of SMT surface mounting. Utility Model Content

[0004] The purpose of the utility model is to provide a SMT surface mount fixing device to solve the problems raised in the background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a SMT surface mounting fixing device, comprising a support plate for providing support for the SMT surface mounting of a printed circuit board and two C-shaped support frames, a sliding rod is welded to the inner side wall of the support frame, the sliding rod is slidably connected to two sliders, the sides of the two sliders are slidably connected to the support frame, an L-shaped connecting frame is welded to the top surface of the slider, an electric telescopic rod 1 is installed on the inner top wall of the connecting frame, a fixing plate is welded to the movable end of the electric telescopic rod 1, a rubber plate for vertically extruding the SMT surface mounted printed circuit board is fixedly connected to the bottom surface of the fixing plate, the bottom surfaces of the four sliders are in sliding friction contact with the support plate, the side surfaces of the sliders are threadedly connected to fixing bolts, the threaded ends of the fixing bolts are fixedly connected to rubber blocks, and the side surfaces of the rubber blocks abut against the sliding rods.

[0006] Preferably, bases are welded to both ends of the bottom of the support plate, and the bottom surfaces of the support frames with two eccentrically arranged inner walls are in sliding friction contact with the support plate.

[0007] Preferably, L-shaped connecting plates are welded to both ends of the support frame, and moving blocks are welded to the bottom surfaces of the connecting plates.

[0008] Preferably, through grooves are provided on the sides of the two moving blocks, and the inner walls of the through grooves of the two moving blocks are slidably connected to the limiting rods.

[0009] Preferably, both end surfaces of the limiting rod are welded to the inner side walls of the limiting frame, and the adjacent sides of the two limiting frames are welded to the support plate.

[0010] Preferably, a groove is provided on the top surface of the support plate, and two electric telescopic rods 2 are installed on the inner wall of the groove of the support plate.

[0011] Preferably, a movable plate is welded to the movable end of the second electric telescopic rod, and the top surface of the movable plate is welded to the support frame.

[0012] Preferably, the bottom surfaces and side surfaces of the two movable plates are slidably connected to the support plate.

[0013] Compared with the prior art, the technical effects and advantages of this utility model are:

[0014] The SMT surface mounting fixture is powered by four electric telescopic rods. During the movement of the movable end of the electric telescopic rod, the fixed plate is driven to move longitudinally. Under the connection provided by the fixed plate, the rubber plate is easily moved downward to provide a longitudinal clamping and fixing effect on the printed circuit board located on the top surface of the support plate. The rubber plate provides a buffering and protective effect. At the same time, the fixed plate provides a supporting effect on the rubber plate, so that the rubber plate uniformly squeezes the printed circuit board. At the same time, the slider moves downward along the path of the slider. During the transmission process, the clamping position of the rubber plate on the printed circuit board is easily adjusted to prevent the clamped part of the printed circuit board from being inconvenient for SMT surface mounting, thereby improving the efficiency of the fixture for SMT surface mounting.

[0015] The SMT surface mounting fixing device is provided with two electric telescopic rods that provide power, so that the moving end of the electric telescopic rod drives the moving plate to move in position during the movement. Under the connection provided by the moving plate, the lateral position of the support frame is adjusted during the transmission process to adapt to the clamping and fixing of printed circuit boards of different sizes. At the same time, the provided moving block moves along the path of the limit rod. Under the connection provided by the connecting plate, the lateral movement stability of the support frame is enhanced during the transmission process, preventing the two support frames from shaking when horizontally squeezing the printed circuit board, causing the printed circuit board to be damaged by friction, and improving the SMT surface mounting quality of the printed circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 It is a structural diagram of the utility model;

[0018] Figure 2 This is a structural diagram of the support frame and the slide rod of the utility model;

[0019] Figure 3 This is a structural diagram of the slider and the connecting frame of the utility model;

[0020] Figure 4 This is a structural diagram of the fixing bolt of the present utility model.

[0021] Description of reference numerals:

[0022] In the figure: 1. Support plate; 2. Support frame; 3. Sliding rod; 4. Sliding block; 5. Connecting frame; 6. Electric telescopic rod 1; 7. Fixed plate; 8. Rubber plate; 9. Moving plate; 10. Electric telescopic rod 2; 11. Base; 12. Connecting plate; 13. Moving block; 14. Limit rod; 15. Limiting frame; 16. Fixing bolt; 17. Rubber block. DETAILED DESCRIPTION

[0023] In the following description, numerous specific details are provided to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features known in the art are not described to avoid confusion with the present invention.

[0024] Unless otherwise defined, the directions of up, down, left, right, front, back, inside and outside involved in this document are based on the directions of up, down, left, right, front, back, inside and outside shown in the figures of the present invention, and are explained here together.

[0025] The connection method can be bonding, welding, bolt connection, etc., which shall be based on actual needs.

[0026] In order to solve the problem that the clamping position of the SMT surface mount fixture is inconvenient to adjust during use, which reduces the efficiency of SMT surface mount, please refer to Figures 1 to 4The structure of the device body is a support plate 1 and two C-shaped support frames 2 for providing support for the SMT surface mounting of the printed circuit board, so that the printed circuit board is placed on the top surface of the support plate 1, providing preliminary conditions for the SMT surface mounting, and the printed circuit board is located on the adjacent sides of the two support frames 2, and a slide bar 3 is welded on the inner wall of the support frame 2. The support frame 2 is provided to provide support and fixation for the slide bar 3, and the slide bar 3 is slidably connected to two sliders 4, so that one slide bar 3 provides a fixing effect on the moving path of the two sliders 4. The sides of the two sliders 4 are slidably connected to the support frame 2, further enhancing the lateral movement stability of the two sliders 4, and an L-shaped connecting frame 5 is welded on the top surface of the slider 4 to realize the synchronous movement of the connecting frame 5 and the slider 4.

[0027] An electric telescopic rod 6 is installed on the inner top wall of the connecting frame 5. A through groove is provided on the inner top wall of the connecting frame 5. The inner wall of the through groove of the connecting frame 5 is detachably connected to the fixed end of the electric telescopic rod 6 by bolts, so that the connecting frame 5 provides support and fixation for the electric telescopic rod 6. A fixing plate 7 is welded to the movable end of the electric telescopic rod 6. A rubber plate 8 for vertically extruding the SMT surface-mounted printed circuit board is fixedly connected to the bottom surface of the fixing plate 7. When the movable end of the electric telescopic rod 6 moves, the longitudinal position of the rubber plate 8 is easily adjusted under the connection provided by the fixing plate 7, so that the rubber plate 8 provides an extrusion and fixing effect on the printed circuit board located on the top surface of the support plate 1.

[0028] The set fixing plate 7 provides a supporting effect on the rubber plate 8, so that the rubber plate 8 is in uniform contact with the printed circuit board, and at the same time it is convenient to adjust the contact position of the rubber plate 8 and the printed circuit board, preventing the printed circuit board from being partially blocked by the rubber plate 8 and making it inconvenient to perform SMT surface mounting, thereby improving the efficiency of SMT surface mounting. The bottom surfaces of the four sliders 4 are in sliding friction contact with the support plate 1, and the side surfaces of the sliders 4 are threadedly connected with fixing bolts 16, and the threaded ends of the fixing bolts 16 are fixedly connected with rubber blocks 17. The side surfaces of the rubber blocks 17 abut against the slide rod 3, so that the fixing bolts 16 move along the threaded path of the slider 4, thereby making it convenient for the fixing bolts 16 to drive the rubber blocks 17 to abut against the slide rod 3. Under the anti-slip effect provided by the rubber blocks 17 and the squeezing force of the rubber blocks 17 and the slide rod 3, the lateral position of the rubber plate 8 is fixed, thereby improving the clamping and fixing stability of the printed circuit board.

[0029] A base 11 is welded at both ends of the bottom of the support plate 1. The two bases 11 provide support for the support plate 1. The bottom surface of the support frame 2 with two centrifugally arranged inner walls is in sliding friction contact with the support plate 1. L-shaped connecting plates 12 are welded at both ends of the support frame 2, and the inner walls of the two connecting plates 12 are arranged centripetally. A moving block 13 is welded on the bottom surface of the connecting plate 12. Under the connection provided by the two connecting plates 12, the two moving blocks 13 are synchronously moved laterally with one support frame 2. Through grooves are opened on the sides of the two moving blocks 13, and the inner walls of the through grooves of the two moving blocks 13 are slidably connected to the limiting rod 14.

[0030] The two ends of the limit rod 14 are welded to the inner wall of the limit frame 15, and the adjacent sides of the two limit frames 15 are welded to the support plate 1. The top surface of the support plate 1 is provided with a groove, and two electric telescopic rods 2 10 are installed on the inner wall of the through groove of the support plate 1. The inner wall of the through groove of the support plate 1 is detachably connected to the fixed end of the two electric telescopic rods 2 10 by bolts. The moving end of the electric telescopic rod 2 10 is welded with a moving plate 9, and the top surface of the moving plate 9 is welded to the support frame 2. The bottom and side surfaces of the two moving plates 9 are slidably connected to the support plate 1, so that the moving ends of the two electric telescopic rods 2 10 move. The spacing between the two support frames 2 is adjusted during transmission to adapt to the horizontal clamping and fixation of printed circuit boards of different sizes.

[0031] The electric telescopic rod 1 6 and the electric telescopic rod 2 10 are both prior art. Their working principles, sizes and models are irrelevant to the functions of the present application, so they are not described in detail. The control method of the present invention is controlled by a controller. The control circuit of the controller can be implemented by simple programming by technicians in this field. The power supply is also common knowledge in this field. Moreover, the present invention is mainly used to protect mechanical devices, so the control method and circuit connection are no longer explained in detail in the present invention.

[0032] How it works

[0033] When using the SMT surface mount fixing device, the user starts the two electric telescopic rods 10, so that the moving end of the electric telescopic rod 10 drives the moving plate 9 to move during the movement, and then adjusts the distance between the two support frames 2, so that the two support frames 2 can horizontally clamp the printed circuit board placed on the top surface of the support plate 1. At the same time, under the connection action of the connecting plate 12, the moving block 13 moves along the path of the limit rod 14, and the two side surfaces of the moving block 13 are slidably connected to the limit frame 15.

[0034] The four electric telescopic rods 6 are started. During the movement of the mobile end of the electric telescopic rod 6, the fixed plate 7 is driven to move, thereby causing the rubber plate 8 to move downward and squeeze the printed circuit board. At the same time, the contact between the rubber plate 8 and the printed circuit board is released, so that the slider 4 moves downward along the path of the slide bar 3, which facilitates the adjustment of the squeezing position of the rubber plate 8 on the printed circuit board. During the rotation of the fixing bolt 16, it moves downward along the threaded path of the slider 4, driving the rubber block 17 to squeeze the slide bar 3, and fixing the position of the rubber plate 8 during the transmission process.

[0035] It should be noted that, in this article, relational terms such as one and two are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions. The sentence "including an element defined by ... does not exclude the presence of other identical elements in the process, method, article or device that includes the element."

[0036] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A SMT surface mounting fixture, comprising a support plate (1) for providing support for the SMT surface mounting of a printed circuit board and two C-shaped support frames (2), characterized in that: The inner wall of the support frame (2) is welded with a sliding rod (3), and the sliding rod (3) is slidably connected to two sliders (4). The sides of the two sliders (4) are slidably connected to the support frame (2). An L-shaped connecting frame (5) is welded to the top surface of the slider (4), and an electric telescopic rod (6) is installed on the inner top wall of the connecting frame (5). A fixed plate (7) is welded to the movable end of the electric telescopic rod (6); The bottom surface of the fixing plate (7) is fixedly connected to a rubber plate (8) for vertically extruding a printed circuit board mounted on an SMT surface; the bottom surfaces of the four sliders (4) are in sliding friction contact with the support plate (1); the side surfaces of the sliders (4) are threadedly connected to fixing bolts (16); the threaded ends of the fixing bolts (16) are fixedly connected to rubber blocks (17); and the side surfaces of the rubber blocks (17) are in contact with the slide rod (3).

2. The SMT surface mount fixture according to claim 1, characterized in that: Bases (11) are welded to both ends of the bottom of the support plate (1), and the bottom surfaces of the support frames (2) with two inner side walls arranged eccentrically are in sliding frictional contact with the support plate (1).

3. The SMT surface mount fixture according to claim 2, wherein: L-shaped connecting plates (12) are welded to both ends of the support frame (2), and a moving block (13) is welded to the bottom surface of the connecting plate (12).

4. The SMT surface mount fixture according to claim 3, characterized in that: Through slots are provided on the sides of the two moving blocks (13), and the inner walls of the through slots of the two moving blocks (13) are slidably connected to limit rods (14).

5. The SMT surface mount fixture according to claim 4, characterized in that: The inner side walls of the limiting frames (15) are welded to both end surfaces of the limiting rod (14), and the adjacent sides of the two limiting frames (15) are welded to the support plate (1).

6. The SMT surface mount fixture according to claim 5, characterized in that: A groove is provided on the top surface of the support plate (1), and two electric telescopic rods (10) are installed on the inner wall of the through groove of the support plate (1).

7. The SMT surface mount fixture according to claim 6, characterized in that: A movable plate (9) is welded to the movable end of the second electric telescopic rod (10), and the top surface of the movable plate (9) is welded to the support frame (2).

8. The SMT surface mount fixture according to claim 7, characterized in that: The bottom surfaces and side surfaces of the two movable plates (9) are both slidably connected to the support plate (1).

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