Positioning jig for reflow soldering of PCB (Printed Circuit Board)

Abstract

The utility model provides a positioning jig for reflow soldering of a PCB (printed circuit board), and relates to the field of positioning jigs, grooves are formed in the top end surface of a base, the grooves are clamping grooves, the height of the top end surface of each clamping groove is lower than that of the top end surface of the base, and the clamping grooves are formed in the peripheral surface of the base in an annular array mode. The problems that in the prior art, due to the fact that corresponding positioning jigs need to be customized for positioning according to different specifications of circuit boards, when positioning operation is carried out, different molds need to be replaced for use every time, and the positioning and welding efficiency of the circuit boards can be reduced are solved. By arranging the base of a split structure, the cover plate, the support A and the support B, when the support A and the support B are bent and damaged, the cover plate can be disassembled from the base, and the support A and the support B are synchronously disassembled and replaced, so that the service life of the device can be remarkably prolonged when the device is used.

Description

Technical Field

[0001] The utility model belongs to the field of positioning jigs, and particularly relates to a positioning jig used for reflow soldering of a PCB circuit board. Background Art

[0002] The names of circuit boards include: ceramic circuit board, alumina ceramic circuit board, aluminum nitride ceramic circuit board, circuit board, PCB board, aluminum substrate, high-frequency board, thick copper board, impedance board, PCB, ultra-thin circuit board, ultra-thin circuit board, printed (copper etching technology) circuit board, etc. When the circuit board is undergoing reflow soldering processing, in order to ensure that the circuit board has good stability, it is necessary to use corresponding positioning fixtures to clamp and position the circuit board. When the existing positioning fixtures are used, they need to be customized according to the specifications of the circuit board for positioning. However, when performing the positioning operation, different molds need to be replaced each time, which will reduce the efficiency of positioning welding of the circuit board.

[0003] Therefore, in view of the shortcomings of the above-mentioned scheme in actual production and implementation, it is revised and improved. At the same time, in the spirit and concept of seeking excellence, with the assistance of professional knowledge and experience, and after many ingenuity and experiments, the utility model is created, and a positioning fixture for PCB circuit board reflow soldering is provided to solve the problem that when the existing positioning fixture is used, it is necessary to customize the corresponding positioning fixture according to the different specifications of the circuit board for positioning, but when performing the positioning operation, it is necessary to replace different molds for use each time, which will reduce the efficiency of positioning welding of the circuit board. Utility Model Content

[0004] The utility model proposes a positioning jig for reflow soldering of PCB circuit boards, which solves the problem that the existing positioning jigs need to be customized according to the specifications of the circuit boards for positioning, but when performing the positioning operation, different molds need to be replaced each time, which reduces the efficiency of positioning and soldering of the circuit boards.

[0005] The technical solution of the utility model is implemented as follows: a positioning fixture for PCB circuit board reflow soldering includes a base, the main body of the base is a frame structure, and a through hole is opened inside the base, the through hole is a mounting hole, there are four mounting holes in total, and the four mounting holes are respectively installed at the four corners inside the base, the base and the mounting holes together form a connection structure, and a groove is opened on the top surface of the base, the groove is a card slot, the top surface height of the card slot is lower than the top surface height of the base, and the card slot is opened on the outer peripheral surface of the base in a ring array, and the base and the card slot together form a connection structure:

[0006] As a preferred embodiment, a bracket A is installed inside the slot opened at the top of the base, the main body of the bracket A is arranged longitudinally, and there are four brackets A in total. The four brackets A are installed in a linear array in the slot opened at the top of the base, and a bracket B is fixedly connected to the inner side of the bracket A, and the bracket B and the bracket A are arranged vertically.

[0007] As a preferred embodiment, the main body of the bracket B is arranged horizontally, and the interiors of the bracket B and the bracket A are provided with through holes in a linear array, and the bracket A and the bracket B together constitute a bearing structure, and a cover plate is installed on the top surface of the base, and the main body of the cover plate is a rectangular frame structure.

[0008] As a preferred embodiment, the cover plate is connected to the base via a fixing bolt, and a guide frame is adsorbed and connected to the top of bracket A and bracket B, a longitudinal groove with a one-way opening at the front end is provided inside the guide frame, and there are two guide frames in total, which are adsorbed on top of bracket A and bracket B in a linear array.

[0009] As a preferred embodiment, the size of the cover plate is consistent with the size of the base, and a groove is provided on the top surface of the cover plate. The grooves are arranged in a circular array at the four corners of the top surface of the cover plate, and mounting holes are arranged in a circular array inside the four grooves. Fixing bolts are installed inside the mounting holes provided in the cover plate.

[0010] As a preferred embodiment, a movable seat is installed inside the longitudinal groove opened in the guide frame, and a slider is fixedly connected to the outer side of the movable seat. There are four sliders in total, wherein every two laterally adjacent sliders form a group, and the two groups of sliders are respectively fixedly connected to the left and right side positions of the two movable seats, and the movable seat is slidably connected to the longitudinal groove opened in the guide frame through the slider fixedly connected to the outer side thereof, and a through hole is opened inside the movable seat, and a clamping piece is inserted into the through hole, the main body of the clamping piece is a cylindrical structure, and a blocking plate is fixedly connected to the outer side of the clamping piece, the main body of the blocking plate is a circular structure, and a reset piece is fixedly connected to the side of the blocking plate close to the movable seat, and the reset piece is a spring.

[0011] After using the above technical solution, the beneficial effects of the utility model are:

[0012] 1. In the utility model, a base, a cover plate, a bracket A and a bracket B with a split structure are provided, so that when the bracket A and the bracket B are bent and damaged, the cover plate can be removed from the base, and the bracket A and the bracket B can be disassembled and replaced simultaneously, so that the service life of the device can be significantly extended when it is in use.

[0013] 2. In the utility model, by providing a guide frame and a movable seat, when clamping and positioning a circuit board, the clamping member can be pushed outward by utilizing the setting of a blocking plate and a reset member, so that the clamping member can quickly clamp and position the circuit board placed on bracket A and bracket B, thereby achieving a more practical purpose. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0015] Figure 1 It is a schematic diagram of the top and side views of the positioning fixture of the utility model after being disassembled;

[0016] Figure 2 This is a schematic diagram of the combined structure of the positioning fixture of the utility model;

[0017] Figure 3 It is a schematic diagram of the combined structure of the cover plate and the fixing bolt of the positioning fixture of the utility model;

[0018] Figure 4 It is a schematic diagram of the combined structure of the clamping member and the blocking plate of the positioning fixture of the utility model;

[0019] Figure 5 It is a schematic diagram of the combined structure of the base and the mounting hole of the positioning fixture of the utility model;

[0020] Figure 6 It is a schematic diagram of the top view of the positioning fixture of the utility model;

[0021] In the figure, 1, base; 101, mounting hole; 102, slot; 2, bracket A; 201, bracket B; 202, cover plate; 203, fixing bolt; 3, guide frame; 301, moving seat; 302, slider; 303, clamping member; 304, blocking plate; 305, reset member. DETAILED DESCRIPTION

[0022] 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 of 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.

[0023] like Figure 1-Figure 6 As shown, the positioning fixture for PCB circuit board reflow soldering includes: a base 1, the main body of the base 1 is a frame structure, and a through hole is opened inside the base 1, the through hole is a mounting hole 101, there are four mounting holes 101, and the four mounting holes 101 are respectively installed at the four corners inside the base 1, the base 1 and the mounting holes 101 together form a connection structure, and a groove is opened on the top surface of the base 1, the groove is a card slot 102, the top surface height of the card slot 102 is lower than the top surface height of the base 1, and the card slot 102 is opened on the outer peripheral surface of the base 1 in a ring array, the base 1 and the card slot 102 together form a connection structure, and a moving seat 301 is installed inside the longitudinal groove opened in the guide frame 3, and the moving seat 301 The outer side of the slider 302 is fixedly connected to the slider 302, and the slider 302 is provided at four places, wherein every two laterally adjacent sliders 302 form a group, and the two groups of sliders 302 are respectively fixedly connected to the left and right side positions of the two movable seats 301, and the movable seat 301 is slidably connected to the longitudinal groove opened in the guide frame 3 through the slider 302 fixedly connected to the outer side thereof, and the movable seat 301 is provided with a through hole inside, and a clamping member 303 is inserted into the inside of the through hole, and the main body of the clamping member 303 is a cylindrical structure, and a blocking plate 304 is fixedly connected to the outer side of the clamping member 303, and the main body of the blocking plate 304 is a circular structure, and a reset member 305 is fixedly connected to the side of the blocking plate 304 close to the movable seat 301, and the reset member 305 is a spring.

[0024] Among them, a bracket A2 is installed inside the card slot 102 opened at the top of the base 1, the main body of the bracket A2 is arranged longitudinally, and there are four brackets A2 in total, the four brackets A2 are installed in a linear array in the card slot 102 opened at the top of the base 1, and the inner side of the bracket A2 is fixedly connected with a bracket B201, the bracket B201 and the bracket A2 are arranged vertically, the main body of the bracket B201 is arranged horizontally, and the insides of the brackets B201 and the bracket A2 are opened with through holes in a linear array, and the bracket A2 and the bracket B201 together constitute a bearing structure, and a cover plate 202 is installed on the top surface of the base 1, and the main body of the cover plate 202 is a rectangular frame structure.

[0025] Among them, the size of the cover 202 is consistent with the size of the base 1, and a groove is opened on the top surface of the cover 202. The groove is opened in a circular array at the four corners of the top surface of the cover 202, and the inside of the four grooves are opened with mounting holes 101 in a circular array. The inside of the mounting hole 101 opened in the cover 202 is installed with a fixing bolt 203. The cover 202 and the base 1 are connected by the fixing bolt 203, and the top of the bracket A2 and the bracket B201 are adsorbed and connected with a guide frame 3. A longitudinal groove with a one-way opening at the front end is opened inside the guide frame 3, and there are two guide frames 3 in total. The two guide frames 3 are adsorbed on the top of the bracket A2 and the bracket B201 in a linear array.

[0026] When in use, when the circuit board is undergoing reflow soldering, the base 1 can be placed on a workbench, and the bracket A2 and the bracket B201 can be simultaneously placed inside the card slot 102 opened in the base 1 for assembly, and the cover plate 202 can be simultaneously placed on top of the base 1 to cover and position the bracket A2 and the bracket B201, and then the fixing bolt 203 can be passed through the screw hole opened in the cover plate 202 to achieve the quick fixing and limiting of the base 1 and the cover plate 202;

[0027] And after the limiting of bracket A2 and bracket B201 is completed, two guide frames 3 can be placed on bracket A2 and bracket B201 according to the different specifications of the circuit board, and the adsorption of the guide frame 3 can be used for positioning, and the longitudinal position of the movable seat 301 slidably connected to the guide frame 3 can be manually adjusted according to the current position of the circuit board, and the blocking plate 304 and the reset member 305 can be used to push the clamping member 303 to achieve the clamping and positioning operation of the circuit board, thereby achieving a more practical purpose.

[0028] In the description of the present utility model, it should be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In the description of the present utility model, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can be the internal communication of two elements, it can be a direct connection, or it can be an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0029] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A positioning fixture for PCB circuit board reflow soldering, characterized in that: The invention comprises a base (1), wherein the main body of the base (1) is a frame structure, and a through hole is provided inside the base (1), the through hole is a mounting hole (101), a total of four mounting holes (101) are provided, and the four mounting holes (101) are respectively installed at four corners inside the base (1), the base (1) and the mounting holes (101) together form a connection structure, and a groove is provided on the top surface of the base (1), the groove is a clamping groove (102), the top surface height of the clamping groove (102) is lower than the top surface height of the base (1), and the clamping groove (102) is provided on the outer peripheral surface of the base (1) in a ring array, and the base (1) and the clamping groove (102) together form a connection structure.

2. The positioning fixture for PCB circuit board reflow soldering according to claim 1, characterized in that: A bracket A (2) is installed inside the slot (102) opened at the top of the base (1), the main body of the bracket A (2) is arranged longitudinally, and the bracket A (2) is arranged at four locations, the four brackets A (2) are installed in a linear array in the slot (102) opened at the top of the base (1), and the inner side of the bracket A (2) is fixedly connected with a bracket B (201), and the bracket B (201) and the bracket A (2) are arranged vertically.

3. The positioning fixture for PCB circuit board reflow soldering according to claim 2, characterized in that: The main body of the support B (201) is arranged horizontally, and the interiors of the support B (201) and the support A (2) are provided with through holes in a linear array, and the support A (2) and the support B (201) together form a bearing structure, and a cover plate (202) is installed on the top surface of the base (1), and the main body of the cover plate (202) is a rectangular frame structure.

4. The positioning fixture for PCB circuit board reflow soldering according to claim 3, characterized in that: The size of the cover plate (202) is consistent with the size of the base (1), and a groove is provided on the top surface of the cover plate (202). The grooves are provided in a circular array at the four corners of the top surface of the cover plate (202), and mounting holes (101) are provided in a circular array inside the four grooves. Fixing bolts (203) are installed inside the mounting holes (101) provided in the cover plate (202).

5. The positioning fixture for PCB circuit board reflow soldering according to claim 4, characterized in that: The cover plate (202) is connected to the base (1) via a fixing bolt (203), and the top ends of the brackets A (2) and B (201) are adsorbed and connected with guide frames (3), the inside of the guide frames (3) is provided with a longitudinal groove with a front end one-way opening, and the guide frames (3) are provided at two locations, and the two guide frames (3) are adsorbed on the tops of the brackets A (2) and B (201) in a linear array.

6. The positioning fixture for PCB circuit board reflow soldering according to claim 5, characterized in that: A moving seat (301) is installed inside the longitudinal groove provided in the guide frame (3), and a slider (302) is fixedly connected to the outer side of the moving seat (301). The sliders (302) are provided at four locations, wherein two sliders (302) adjacent to each other in the transverse direction form a group, and the two groups of sliders (302) are respectively fixedly connected to the left and right side surfaces of the two moving seats (301). The moving seat (301) is slidably connected to the guide frame (3) through the sliders (302) fixedly connected to the outer side thereof. A through hole is provided in the longitudinal groove of the frame (3) and inside the movable seat (301), a clamping member (303) is inserted into the through hole, the main body of the clamping member (303) is a cylindrical structure, and a blocking plate (304) is fixedly connected to the outside of the clamping member (303), the main body of the blocking plate (304) is a circular structure, and a reset member (305) is fixedly connected to one side of the blocking plate (304) close to the movable seat (301), and the reset member (305) is a spring.

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