Test fixture for SMT (Surface Mount Technology) processing and forming circuit board

Abstract

The utility model discloses a test fixture for an SMT processing and forming circuit board, which comprises a test box, an air cylinder is fixedly arranged at the center of the top of the test box, a movable plate is fixedly arranged at the output end of the air cylinder, and test heads for detecting the circuit board are fixedly arranged at the two ends of the bottom of the movable plate. According to the utility model, the motor, the screw rod, the connecting piece, the mounting seat and other parts are arranged and matched for use, so that the detection plate can be conveniently ejected out of the mounting groove, an operator can conveniently take a circuit board, the damage to the circuit board is reduced, and the detection efficiency of the circuit board is improved; due to the fact that the circuit board is electrically connected with the detection plate in the detection process of the device, the temperature of the detection plate is too high after long-time use, and the service life is affected, and the air cooler is arranged to be matched with the connecting pipe for use, so that the detection plate is cooled, and the service life of the device is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit boards, in particular to a test fixture for SMT processed circuit boards. 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 circuit board, etc. Circuit boards miniaturize and visualize circuits, and play an important role in the mass production of fixed circuits and the optimization of electrical appliance layout. Circuit boards can be called printed circuit boards or printed circuit boards, which have the characteristics of high wiring density, light weight, thin thickness and good bending properties.

[0003] When using the test fixture in the prior art, the circuit board needs to be placed in a slot. After the test is completed, the circuit board needs to be taken out of the slot. Since the circuit board is very thin, it is very difficult to take it out, and sometimes the circuit board may be damaged due to improper operation. Utility Model Content

[0004] The purpose of the utility model is to provide a test fixture for SMT processed circuit boards, which facilitates the ejection of the test board from the mounting groove by setting a motor, a screw, a connector, a mounting seat, and other components to facilitate the operator to take the circuit board, thereby reducing damage to the circuit board, thereby improving the detection efficiency of the circuit board and solving the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a test fixture for SMT processed circuit boards, comprising a test box, a cylinder is fixedly installed at the top center of the test box, and a movable plate is fixedly installed at the output end of the cylinder, test heads for detecting circuit boards are fixedly installed at both ends of the bottom of the movable plate, a motor is fixedly installed at the inner bottom center of the test box, and a screw is transmission-connected to the output end of the motor, a connecting piece is threadedly connected to the surface of the screw, and a mounting seat is fixedly installed on the surface of the connecting piece, a connecting rod is fixedly installed on one side of the mounting seat, and a support rod is fixedly installed on one end of the connecting rod, and a support block is fixedly installed on the top surface of the support rod.

[0006] Preferably, a carrying plate is fixedly mounted at the center of the inner wall of the test box, and mounting grooves are formed at both ends of the top of the carrying plate.

[0007] Preferably, a detection plate for placing a circuit board is provided inside the installation slot, and movable blocks are fixedly installed around the detection plate, and the movable blocks are snap-fitted into movable slots provided around the installation slot.

[0008] Preferably, a symmetrical lifting rod is fixedly installed on the top of the detection board, and a fixing piece is fixedly installed on the top surface of the lifting rod, and a sponge pad for protecting the circuit board is glued to the bottom surface of the fixing piece by glue.

[0009] Preferably, a mounting plate is fixedly mounted on one side of the test box, and a cooling fan for cooling the detection plate is fixedly mounted on the top surface of the mounting plate.

[0010] Preferably, the output end of the air cooler is fixedly connected with a connecting pipe, and the connecting pipe runs through the interior of the test box, and the lower end of the front side of the test box is movably connected with a protective door through a hinge.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model provides a motor, a screw rod, a connector, a mounting seat and other components for coordinated use, so as to facilitate the detection board to be ejected from the mounting groove, so as to facilitate the operator to take the circuit board, thereby reducing the damage to the circuit board, thereby improving the detection efficiency of the circuit board;

[0013] Since the circuit board and the detection board are electrically connected during the detection process of this device, long-term use will cause the temperature of the detection board to be too high, thus affecting its service life. By setting up a cold air fan and using it in conjunction with the connecting pipe, the detection board can be cooled to increase the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0015] Figure 2 This is a schematic diagram of the structure of the detection plate, moving block, lifting rod and fixing member of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the protective door of the utility model in the open state;

[0017] Figure 4 It is a schematic diagram of the structure of some components of the utility model.

[0018] In the figure: 1. test box; 2. cylinder; 3. movable plate; 4. test head; 5. motor; 6. screw; 7. connecting piece; 8. support rod; 9. support block; 10. load-bearing plate; 11. mounting groove; 12. detection plate; 13. moving block; 14. lifting rod; 15. fixing piece; 16. mounting plate; 17. air cooler; 18. connecting pipe; 19. protective door. 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 Figures 1 to 4 The utility model provides a technical solution: a test fixture for SMT processed circuit boards, comprising a test box 1, a cylinder 2 is fixedly installed at the top center of the test box 1, and a movable plate 3 is fixedly installed at the output end of the cylinder 2, and test heads 4 for detecting circuit boards are fixedly installed at both ends of the bottom of the movable plate 3. By starting the cylinder 2, the output end of the cylinder drives the test head 4 at the bottom to move downward until the test head 4 and the metal probe of the corresponding contact point on the circuit board realize the detection of the circuit board;

[0021] A motor 5 is fixedly installed at the center of the inner bottom of the test box 1, and a screw rod 6 is transmission-connected to the output end of the motor 5, a connector 7 is threadedly connected to the surface of the screw rod 6, and a mounting seat is fixedly installed on the surface of the connector 7, a connecting rod is fixedly installed on one side of the mounting seat, and a support rod 8 is fixedly installed on one end of the connecting rod, and a support block 9 is fixedly installed on the top surface of the support rod 8. By arranging the motor 5, the screw rod 6, the connector 7, the mounting seat, and the like, the above components are used in combination to facilitate the ejection of the detection board 12 from the mounting groove 11, so as to facilitate the operator to take the circuit board, thereby reducing the damage to the circuit board, thereby improving the detection efficiency of the circuit board;

[0022] A carrier plate 10 is fixedly installed at the center of the inner wall of the test box 1, and mounting grooves 11 are provided at both ends of the top of the carrier plate 10. A detection plate 12 for placing a circuit board is provided inside the mounting groove 11, and a moving block 13 is fixedly installed around the detection plate 12, and the moving block 13 is clamped in the moving grooves provided around the mounting groove 11; a symmetrical lifting rod 14 is fixedly installed on the top of the detection plate 12, and a fixing member 15 is fixedly installed on the top surface of the lifting rod 14, and a sponge pad for protecting the circuit board is glued to the bottom surface of the fixing member 15; a mounting plate 16 is fixedly installed on one side of the test box 1, and a useful The air cooler 17 for cooling the detection plate 12 is provided to be used in conjunction with a connecting pipe 18, so as to cool the detection plate 12, so as to increase the service life of the device; the output end of the air cooler 17 is fixedly connected to the connecting pipe 18; when in use, the cold air generated at the output end of the air cooler 17 is started to transmit the cold air to the test box 1 through the connecting pipe 18, so as to cool the detection plate 12; and the connecting pipe 18 runs through the interior of the test box 1, and the lower end of the front side of the test box 1 is movably connected to a protective door 19 through a hinge. By providing the protective door 19, it is convenient to block the components inside the test box 1, so as to achieve an aesthetic effect.

[0023] During specific use, the motor 5 is started to make its output end drive the screw 6 to rotate, thereby driving the connecting piece 7 on the surface of the screw 6 to rotate, and the connecting piece 7 drives the mounting seat, connecting rod, support rod 8 and support block 9 thereon to move upward, thereby pushing the detection board 12 upward out of the mounting groove 11, and the detection board 12 is used in conjunction with the moving block 13 and the moving groove to prevent the detection board 12 from shifting, and the telescopic rod is lifted to separate the fixing piece 15 from the circuit board, and finally the circuit board can be taken out, and the reverse operation will fix the circuit board on the detection board 12.

[0024] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A test fixture for SMT processed circuit boards, comprising a test box (1), characterized in that: A cylinder (2) is fixedly mounted at the top center of the test box (1), and a movable plate (3) is fixedly mounted at the output end of the cylinder (2), and test heads (4) for detecting circuit boards are fixedly mounted at both ends of the bottom of the movable plate (3), a motor (5) is fixedly mounted at the inner bottom center of the test box (1), and a screw rod (6) is transmission-connected to the output end of the motor (5), a connecting piece (7) is threadedly connected to the surface of the screw rod (6), and a mounting seat is fixedly mounted on the surface of the connecting piece (7), a connecting rod is fixedly mounted on one side of the mounting seat, and a support rod (8) is fixedly mounted on one end of the connecting rod, and a support block (9) is fixedly mounted on the top surface of the support rod (8).

2. The test fixture for SMT-processed circuit boards according to claim 1, characterized in that: A carrying plate (10) is fixedly mounted at the center of the inner wall of the test box (1), and mounting grooves (11) are provided at both ends of the top of the carrying plate (10).

3. The test fixture for SMT-processed circuit boards according to claim 2, characterized in that: A detection plate (12) for placing a circuit board is provided inside the installation groove (11), and movable blocks (13) are fixedly installed around the detection plate (12), and the movable blocks (13) are snap-fitted into movable grooves provided around the installation groove (11).

4. The test fixture for SMT-processed circuit boards according to claim 3, characterized in that: A symmetrical lifting rod (14) is fixedly mounted on the top of the detection board (12), and a fixing piece (15) is fixedly mounted on the top surface of the lifting rod (14), and a sponge pad for protecting the circuit board is bonded to the bottom surface of the fixing piece (15) by glue.

5. The test fixture for SMT-processed circuit boards according to claim 1, characterized in that: A mounting plate (16) is fixedly mounted on one side of the test box (1), and a cooling fan (17) for cooling the detection plate (12) is fixedly mounted on the top surface of the mounting plate (16).

6. A test fixture for SMT-processed circuit boards according to claim 5, characterized in that: The output end of the cooling fan (17) is fixedly connected to a connecting pipe (18), and the connecting pipe (18) runs through the interior of the test box (1). The lower end of the front side of the test box (1) is movably connected to a protective door (19) via a hinge.

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