Aging test device for circuit board

Abstract

The utility model belongs to the field of circuit board aging test, and particularly relates to an aging test device for a circuit board, which comprises a box body, one side of the box body is provided with a gas circulation mechanism, the other side of the box body is fixedly provided with an electric heater, and one end of the electric heater penetrates into an inner cavity of the box body; by arranging the gas circulation mechanism, when the circuit board in the box body is subjected to an aging test, an external control switch is utilized to start the electric heater, and then gas in the inner cavity of the box body can be uniformly heated under the action of continuous air draft and air delivery of the gas circulation mechanism, so that the aging test quality and efficiency of the plurality of circuit boards are improved; and an electric telescopic rod is used for driving a positioning plate and a limiting frame to move downwards, so that circuit boards of different specifications can be efficiently positioned, and the problem that different mounting clamps need to be replaced when the circuit boards of different specifications are tested due to the fact that the circuit boards of different specifications are inconvenient to mount by an existing aging test device, and the test efficiency is reduced is solved.

Description

Technical Field

[0001] The utility model relates to the field of circuit board aging testing, in particular to an aging testing device for a circuit board. Background Art

[0002] Circuit boards are essential components in many electronic products and need to have high stability. With the continuous development of science and technology, the upgrading and innovation of electronic products, circuit board technology is also constantly upgrading. When electronic products are put into production, the circuit boards to be installed need to be subjected to aging tests to improve their stability before they can be put into use. Common aging tests include light aging, damp heat aging, and thermal aging. The aging test uses a heating wire to heat the gas so that the airflow blows onto the circuit board for heating, thereby achieving aging testing of the circuit board.

[0003] Existing aging test devices are not convenient for installing circuit boards of different specifications, resulting in the need to replace different installation fixtures when testing circuit boards of different specifications, thereby reducing test efficiency; therefore, to address the above problem, an aging test device for circuit boards is proposed. Utility Model Content

[0004] In order to make up for the shortcomings of the existing technology and solve the problem that the existing aging test device is not convenient for installing circuit boards of different specifications, resulting in the need to replace different installation fixtures when testing circuit boards of different specifications, thereby reducing test efficiency, the utility model proposes an aging test device for circuit boards.

[0005] The technical solution adopted by the utility model to solve its technical problems is: an aging test device for a circuit board, comprising a box body, a gas circulation mechanism is provided on one side of the box body, an electric heater is fixedly installed on the other side of the box body, one end of the electric heater passes through the inner cavity of the box body, an electric telescopic rod is fixedly installed on the top of the box body, the output end of the electric telescopic rod passes through the inner cavity of the box body and is fixedly connected to a positioning plate, the bottom of the positioning plate is fixedly connected to a limiting frame, the bottom of the inner cavity of the box body is fixedly connected to a positioning frame, and the top of the positioning frame is fixedly connected to the positioning frame;

[0006] The gas circulation mechanism includes a fixed plate and a protective shell, wherein the fixed plate and the protective shell are both arranged on one side of the box body, one side of the fixed plate is fixedly connected to the surface of the box body, the top of the fixed plate is fixedly connected to the fan, the output end of the fan is fixedly connected to the air outlet pipe, one end of the air outlet pipe passes through the inner cavity of the box body, the input end of the fan is fixedly connected to a connecting pipe, one end of the connecting pipe passes through the inner cavity of the protective shell and is fixedly connected to a filter element, the top of the filter element is fixedly connected to a dust collecting bag, the dust collecting bag is arranged in the inner cavity of the protective shell, the top of the dust collecting bag is fixedly connected to an air inlet pipe, and one end of the air inlet pipe passes through the inner cavity of the box body.

[0007] Preferably, the inner cavity of the positioning plate is slidably connected to two sliding rods, one end of the sliding rod is fixedly connected to the inner wall of the box body, and the other end of the sliding rod is fixedly connected to the top of the positioning frame.

[0008] Preferably, a first spring is sleeved on the surface of the slide rod, one end of the first spring is fixedly connected to the bottom of the positioning plate, and the other end of the first spring is fixedly connected to the top of the positioning frame.

[0009] By providing the first spring, the positioning plate can be efficiently reset, thereby improving the stability of the positioning plate during use.

[0010] Preferably, the inner cavity of the limit frame is fixedly connected to a first clamping strip, the number of the first clamping strips is several, the inner cavity of the first clamping strip is provided with a second spring, one end of the second spring is fixedly connected to the inner cavity of the first clamping strip, and the other end of the second spring is fixedly connected to the limit strip, and both sides of the limit strip are in contact with the inner wall of the first clamping strip.

[0011] Preferably, the inner cavity of the positioning frame is fixedly connected to a second clamping strip, the number of the second clamping strips is several, and the inner cavity of the second clamping strip is rotatably connected to a limiting wheel via an axle pin.

[0012] By arranging the second clamping strip and cooperating with the limiting wheel, the bottom of the circuit board can be limited, thereby improving the stability of the installation.

[0013] Preferably, two support frames are fixedly connected to the bottom of the fixing plate, and one side of the support frame is fixedly connected to the surface of the box.

[0014] Preferably, two limiting rings are provided on the surface of the protective shell, and one side of the limiting ring is fixedly connected to the surface of the box body.

[0015] The utility model is beneficial in that:

[0016] The utility model provides a gas circulation mechanism. When the aging test of the circuit boards inside the box is carried out, the electric heater is started by an external control switch. Subsequently, the gas in the inner cavity of the box is evenly heated by the continuous extraction and supply of air by the gas circulation mechanism, thereby improving the quality and efficiency of the aging test of multiple circuit boards. In addition, the electric telescopic rod is used to drive the positioning plate and the limit frame to move downward, so that circuit boards of different specifications can be positioned efficiently, solving the problem that the existing aging test device is inconvenient for installing circuit boards of different specifications, resulting in the need to replace different installation fixtures when testing circuit boards of different specifications, thereby reducing the test efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a structural cross-sectional view of the box, electric heater and positioning frame of the utility model;

[0020] Figure 3 This is a structural diagram of the electric telescopic rod, positioning frame and sliding rod of the utility model;

[0021] Figure 4 This is a schematic structural diagram of the first card strip and the second card strip of the present invention;

[0022] Figure 5 This is a structural cross-sectional view of the gas circulation mechanism of the present invention.

[0023] In the figure: 1. Box body; 2. Gas circulation mechanism; 201. Fixed plate; 202. Protective shell; 203. Fan; 204. Air outlet pipe; 205. Connecting pipe; 206. Filter element; 207. Dust bag; 208. Air inlet pipe; 209. Support frame; 210. Limiting ring; 3. Electric heater; 4. Electric telescopic rod; 5. Positioning plate; 6. Limiting frame; 7. Positioning frame; 8. Positioning frame; 9. Sliding rod; 10. First spring; 11. First clip; 12. Second spring; 13. Limiting strip; 14. Second clip; 15. Limiting wheel. DETAILED DESCRIPTION

[0024] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0025] The following is combined with Figure 1-5 To further explain this application,

[0026] The embodiment of the present application discloses an aging test device for a circuit board. Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 A circuit board aging test device includes a box body 1, a gas circulation mechanism 2 is provided on one side of the box body 1, an electric heater 3 is fixedly installed on the other side of the box body 1, one end of the electric heater 3 passes through the inner cavity of the box body 1, an electric telescopic rod 4 is fixedly installed on the top of the box body 1, the output end of the electric telescopic rod 4 passes through the inner cavity of the box body 1 and is fixedly connected to a positioning plate 5, the bottom of the positioning plate 5 is fixedly connected to a limiting frame 6, the bottom of the inner cavity of the box body 1 is fixedly connected to a positioning frame 7, and the top of the positioning frame 7 is fixedly connected to a positioning frame 8;

[0027] The gas circulation mechanism 2 includes a fixed plate 201 and a protective shell 202. The fixed plate 201 and the protective shell 202 are both arranged on one side of the box body 1. One side of the fixed plate 201 is fixedly connected to the surface of the box body 1. The top of the fixed plate 201 is fixedly connected to the fan 203. The output end of the fan 203 is fixedly connected to the air outlet pipe 204. One end of the air outlet pipe 204 passes through the inner cavity of the box body 1. The input end of the fan 203 is fixedly connected to the connecting pipe 205. One end of the connecting pipe 205 passes through the inner cavity of the protective shell 202 and is fixedly connected to the filter element 206. The top of the filter element 206 is fixedly connected to the dust collecting bag 207. The dust collecting bag 207 is arranged in the inner cavity of the protective shell 202, and the top of the dust collecting bag 207 is fixedly connected to the air inlet pipe 208, and one end of the air inlet pipe 208 passes through the inner cavity of the box body 1; by setting up a gas circulation mechanism 2, when the aging test of the circuit board inside the box body 1 is carried out, the electric heater 3 is started by an external control switch, and then the gas in the inner cavity of the box body 1 is heated evenly under the action of continuous exhaust and air supply of the gas circulation mechanism 2, thereby improving the aging test quality and efficiency of multiple circuit boards, and the electric telescopic rod 4 is used to drive the positioning plate 5 and the limit frame 6 to move downward, so that circuit boards of different specifications can be efficiently positioned.

[0028] Reference Figure 3 The inner cavity of the positioning plate 5 is slidably connected to two sliding rods 9, one end of the sliding rod 9 is fixedly connected to the inner wall of the box body 1, and the other end of the sliding rod 9 is fixedly connected to the top of the positioning frame 7; by setting the sliding rod 9, the positioning plate 5 can be limited to avoid the position of the positioning plate 5 from shifting when it moves vertically.

[0029] Reference Figure 3 A first spring 10 is sleeved on the surface of the slide rod 9, one end of the first spring 10 is fixedly connected to the bottom of the positioning plate 5, and the other end of the first spring 10 is fixedly connected to the top of the positioning frame 7; by providing the first spring 10, the positioning plate 5 can be efficiently reset, thereby improving the stability of the positioning plate 5 during use.

[0030] Reference Figure 4The inner cavity of the limit frame 6 is fixedly connected with a first clip 11, and the number of the first clip 11 is several. The inner cavity of the first clip 11 is provided with a second spring 12, one end of the second spring 12 is fixedly connected to the inner cavity of the first clip 11, and the other end of the second spring 12 is fixedly connected to the limit strip 13, and both sides of the limit strip 13 are in contact with the inner wall of the first clip 11; by setting the first clip strip 11, the second spring 12 and the limit strip 13, when the electric telescopic rod 4 drives the positioning plate 5 and the limit frame 6 to move downward to limit the circuit board, the second spring 12 and the limit strip 13 can play a role of buffering protection to prevent the circuit board from being squeezed and damaged.

[0031] Reference Figure 4 The inner cavity of the positioning frame 8 is fixedly connected to a second clamping strip 14, and the number of the second clamping strips 14 is several. The inner cavity of the second clamping strip 14 is rotatably connected to the limiting wheel 15 through an axle pin; by setting the second clamping strip 14 and the limiting wheel 15 together, the bottom of the circuit board can be limited, thereby improving the stability of the installation.

[0032] Reference Figure 5 The bottom of the fixed plate 201 is fixedly connected to two support frames 209, and one side of the support frame 209 is fixedly connected to the surface of the box body 1; by setting the support frame 209, the fixed plate 201 can be supported and fixed to prevent the fixed plate 201 from falling off during use.

[0033] Reference Figure 5 The surface of the protective shell 202 is provided with two limiting rings 210, and one side of the limiting ring 210 is fixedly connected to the surface of the box body 1; by providing the limiting ring 210, the protective shell 202 can be limited, thereby improving the stability of the protective shell 202 during use.

[0034] Working principle: When in use, the staff inserts the circuit boards one by one into the inner cavity of the second clamping strip 14, and then uses the external control switch to start the electric telescopic rod 4. The telescopic end of the electric telescopic rod 4 drives the positioning plate 5 to move downward. When the positioning plate 5 moves downward, it drives the limit frame 6 and the first clamping strip 11 to move downward. When the first clamping strip 11 moves downward, it drives the second spring 12 and the limit strip 13 to move downward. When the limit strip 13 contacts the top of the circuit board, the external control switch is used to turn off the electric telescopic rod 4. At this time, the limit strip 13 and the second spring are used to move downward. The spring 12 can buffer and protect the upper end of the circuit board to prevent the circuit board from being squeezed and damaged. When the circuit board is fixed, the staff uses the external control switch to start the electric heater 3 and the fan 203. The electric heater 3 heats the air in the inner cavity of the box 1, and the fan 203 draws the air in the inner cavity of the box 1 into the inner cavity of the dust collecting bag 207, which can remove dust from the gas and then transport it to the inner cavity of the box 1. This reciprocating extraction and delivery of air can make the air in the inner cavity of the box 1 evenly heated, thereby improving the efficiency and quality of the aging test of the circuit board.

[0035] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention, and such changes and improvements fall within the scope of the present invention as claimed.

Claims

1. A circuit board aging test device, characterized by: The invention comprises a box body (1), a gas circulation mechanism (2) is provided on one side of the box body (1), an electric heater (3) is fixedly installed on the other side of the box body (1), one end of the electric heater (3) passes through the inner cavity of the box body (1), an electric telescopic rod (4) is fixedly installed on the top of the box body (1), the output end of the electric telescopic rod (4) passes through the inner cavity of the box body (1) and is fixedly connected to a positioning plate (5), the bottom of the positioning plate (5) is fixedly connected to a limiting frame (6), the bottom of the inner cavity of the box body (1) is fixedly connected to a positioning frame (7), and the top of the positioning frame (7) is fixedly connected to a positioning frame (8); The gas circulation mechanism (2) comprises a fixed plate (201) and a protective shell (202), wherein the fixed plate (201) and the protective shell (202) are both arranged on one side of the box body (1), one side of the fixed plate (201) is fixedly connected to the surface of the box body (1), the top of the fixed plate (201) is fixedly connected to a fan (203), the output end of the fan (203) is fixedly connected to an air outlet pipe (204), one end of the air outlet pipe (204) passes through the inner cavity of the box body (1), and the fan (203) is fixedly connected to the output end of the fan (203). The input end of the machine (203) is fixedly connected to a connecting pipe (205), one end of the connecting pipe (205) penetrates into the inner cavity of the protective shell (202) and is fixedly connected to a filter element (206), the top of the filter element (206) is fixedly connected to a dust collecting bag (207), the dust collecting bag (207) is arranged in the inner cavity of the protective shell (202), the top of the dust collecting bag (207) is fixedly connected to an air inlet pipe (208), and one end of the air inlet pipe (208) penetrates into the inner cavity of the box body (1).

2. The circuit board aging test device according to claim 1, characterized in that: The inner cavity of the positioning plate (5) is slidably connected to two sliding rods (9), one end of the sliding rod (9) is fixedly connected to the inner wall of the box body (1), and the other end of the sliding rod (9) is fixedly connected to the top of the positioning frame (7).

3. The circuit board aging test device according to claim 2, characterized in that: A first spring (10) is sleeved on the surface of the slide rod (9), one end of the first spring (10) is fixedly connected to the bottom of the positioning plate (5), and the other end of the first spring (10) is fixedly connected to the top of the positioning frame (7).

4. The circuit board aging test device according to claim 1, characterized in that: The inner cavity of the limiting frame (6) is fixedly connected to a first clamping strip (11), the number of the first clamping strips (11) is several, the inner cavity of the first clamping strip (11) is provided with a second spring (12), one end of the second spring (12) is fixedly connected to the inner cavity of the first clamping strip (11), and the other end of the second spring (12) is fixedly connected to a limiting strip (13), and both sides of the limiting strip (13) are in contact with the inner wall of the first clamping strip (11).

5. The circuit board aging test device according to claim 1, characterized in that: The inner cavity of the positioning frame (8) is fixedly connected to a second clamping strip (14), the number of the second clamping strips (14) is several, and the inner cavity of the second clamping strip (14) is rotatably connected to a limiting wheel (15) via an axle pin.

6. The circuit board aging test device according to claim 1, characterized in that: Two support frames (209) are fixedly connected to the bottom of the fixing plate (201), and one side of the support frame (209) is fixedly connected to the surface of the box body (1).

7. The circuit board aging test device according to claim 1, characterized in that: Two limiting rings (210) are sleeved on the surface of the protective shell (202), and one side of the limiting ring (210) is fixedly connected to the surface of the box body (1).

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