Rapid temperature testing device for circuit board

Abstract

The utility model discloses a rapid temperature testing device for a circuit board, which comprises an annular sample cabin, an air inlet and a sample placing frame, the air inlet is fixedly communicated with the center of the interior of the annular sample cabin, and the sample placing frame is fixedly connected to the interior of the annular sample cabin. A plurality of sample placing racks are arranged in the annular sample cabin, the sample placing racks are radially and fixedly connected to the interior of the annular sample cabin at equal intervals, a bottom plate is fixedly connected to the bottom of the annular sample cabin, lifting devices are fixedly connected to the left side and the right side of the top of the bottom plate, and a pressing device is arranged between the two lifting devices. According to the utility model, the annular sample cabin, the air inlet, the sample placing rack, the bottom plate, the lifting device, the pressing device, the sealing cover, the sealing ring, the sealing groove, the groove, the moving device and the supporting assembly are matched for use, so that the problem that the testing result is influenced by external air flow, humidity change and the like when the rapid temperature testing device is used for testing a circuit board is solved; and the tested data is not accurate enough.

Description

Technical Field

[0001] This utility model belongs to the field of circuit board testing technology, and in particular relates to a rapid temperature testing device for circuit boards. Background Technology

[0002] Circuit boards (PCBs) are a crucial component of electronic devices, providing electrical connections and mechanical support to ensure the stable operation of various electronic components. High-quality PCBs not only improve device performance but also extend its lifespan. Therefore, comprehensive and accurate testing of PCBs is essential. The main purpose of PCB testing is to ensure the quality, performance, and reliability of the circuit board. Through testing, various problems on the PCB can be identified and corrected, thereby improving the overall quality and safety of the product. Rapid temperature testing equipment for PCBs is mainly used to test the performance of PCBs and related materials under rapid temperature change environments. This equipment is primarily used for rapid temperature change and high / low temperature alternating tests on electronic components, industrial materials, and small electronic products to determine their adaptability and susceptibility to damage when ambient atmospheric temperatures change drastically.

[0003] The problem with existing technology is that when a rapid temperature testing device tests a circuit board, external airflow and humidity changes can affect the test results, resulting in inaccurate data. Utility Model Content

[0004] To address the problems existing in the prior art, this utility model provides a rapid temperature testing device for circuit boards, which has the advantage of forming a sealed space. This solves the problem that external airflow and humidity changes can affect the test results when the rapid temperature testing device is testing the circuit board, resulting in inaccurate test data.

[0005] This invention is implemented as follows: a rapid temperature testing device for circuit boards includes an annular sample chamber, an air inlet, and sample holders. The air inlet is fixedly connected to the center of the annular sample chamber. The sample holders are fixedly connected to the interior of the annular sample chamber, and there are several sample holders that are radially and equidistantly fixed to the interior of the annular sample chamber. A base plate is fixedly connected to the bottom of the annular sample chamber. Lifting devices are fixedly connected to the left and right sides of the top of the base plate. A clamping device is provided between the two lifting devices. Cold and hot air entering through the air inlet flows from the center to the surrounding area.

[0006] In a preferred embodiment of this invention, the lifting device includes a frame, a lead screw, a first motor, and a lifting block. The frame is fixedly connected to the top of the base plate, the lead screw is rotatably connected to the inside of the frame, the first motor is fixedly connected to the top of the frame, and the output end of the first motor is fixedly connected to the top of the lead screw. The lifting block is threadedly connected to the surface of the lead screw, and the pressing device is fixedly connected to the surface of the lifting block. By setting the lifting device, the pressing device can be driven to move up and down, thereby sealing the annular sample chamber through the pressing device.

[0007] As a preferred embodiment of this utility model, the clamping device includes a crossbar and an electric cylinder. The crossbar is fixedly connected to the surface of the lifting block, and the electric cylinder is fixedly connected to the top of the crossbar. The output end of the electric cylinder passes through and extends out of the bottom of the crossbar. The output ends of the two electric cylinders are fixedly connected to a cover. The diameter of the cover is the same as the diameter of the annular sample chamber. By setting the clamping device, the annular sample chamber can form a sealed space, and then hot or cold air can be injected into the annular sample chamber through the air inlet.

[0008] As a preferred embodiment of this utility model, a sealing ring is fixedly connected to the bottom of the cap, and a sealing groove corresponding to the sealing ring is opened on the top of the annular sample chamber. The sealing ring is inserted into the inside of the sealing groove. By setting the sealing ring and the sealing groove, a sealed space can be formed between the cap and the annular sample chamber, preventing airflow from flowing out of the annular sample chamber.

[0009] As a preferred embodiment of this utility model, grooves are provided on both the left and right sides of the top of the base plate. A moving device is provided inside the groove, and a support component is provided on the surface of the moving device. By providing the groove, the moving device, and the support component, the moving device can drive the support component to move, and then the support component can support the cover to prevent the cover from falling.

[0010] In a preferred embodiment of this invention, the moving device includes a second motor, a drive gear, a bracket, a driven gear, two linkage gears, a chain, and two threaded rods. The second motor is fixedly connected to the inside of the groove, the drive gear is fixedly connected to the output end of the second motor, the bracket is fixedly connected to the inside of the groove, the driven gear is rotatably connected to the surface of the bracket, the drive gear meshes with the driven gear, the two linkage gears are rotatably connected to both sides of the inner wall of the groove, the chain meshes with the surfaces of the driven gear and the two linkage gears, the two threaded rods are rotatably connected to both sides of the inner wall of the groove, and the two linkage gears are fixedly connected to the surfaces of the two threaded rods, and the support assembly is threadedly connected to the surface of the threaded rods. By providing the moving device, the support assembly can be moved, thereby improving the flexibility of the support assembly.

[0011] As a preferred embodiment of this utility model, the support assembly includes an upright, a placement platform, a compression spring, and a pressure plate. The upright is threaded to the surface of the threaded rod, the placement platform is fixedly connected to the top of the upright, the compression spring is fixedly connected to the top of the placement platform, and the pressure plate is fixedly connected to the other end of the compression spring. By setting up the support assembly, the cover can be supported, preventing injury to personnel when the cover falls.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. This utility model solves the problem that external airflow and humidity changes can affect the test results of a rapid temperature testing device when testing circuit boards, resulting in inaccurate test data, by setting up an annular sample chamber, air inlet, sample rack, base plate, lifting device, pressing device, cover, sealing ring, sealing groove, groove, moving device and support components.

[0014] 2. By setting a groove, a moving device and a support component, this utility model can move the support component through the moving device, and then support the cover through the support component to prevent the cover from falling. Attached Figure Description

[0015] Figure 1 This is a first-view perspective three-dimensional structural diagram of the temperature testing device provided in this embodiment of the utility model;

[0016] Figure 2 This is a two-dimensional structural diagram of the temperature testing device provided in an embodiment of the present invention from a second perspective;

[0017] Figure 3 This is a three-dimensional structural diagram of the lifting device and the pressing device provided in this embodiment of the utility model;

[0018] Figure 4 This is a three-dimensional structural diagram of the mobile device and support components provided in an embodiment of the present utility model.

[0019] In the diagram: 1. Annular sample chamber; 2. Air inlet; 3. Sample rack; 4. Base plate; 5. Lifting device; 501. Frame; 502. Lead screw; 503. First motor; 504. Lifting block; 6. Clamping device; 601. Crossbar; 602. Electric cylinder; 7. Cover; 8. Sealing ring; 9. Sealing groove; 10. Groove; 11. Moving device; 1101. Second motor; 1102. Drive gear; 1103. Bracket; 1104. Driven gear; 1105. Linkage gear; 1106. Chain; 1107. Threaded rod; 12. Support assembly; 1201. Upright pole; 1202. Placement platform; 1203. Compression spring; 1204. Pressure plate. Detailed Implementation

[0020] To further understand the invention content, features and effects of this utility model, the following embodiments are provided, and detailed descriptions are given in conjunction with the accompanying drawings.

[0021] The structure of this utility model will now be described in detail with reference to the accompanying drawings.

[0022] like Figures 1 to 4 As shown in the figure, the present invention provides a rapid temperature testing device for circuit boards, including an annular sample chamber 1, an air inlet 2, and a sample holder 3. The air inlet 2 is fixedly connected to the center of the interior of the annular sample chamber 1. The sample holder 3 is fixedly connected to the interior of the annular sample chamber 1, and there are several sample holders 3 that are radially and equidistantly fixedly connected to the interior of the annular sample chamber 1. A base plate 4 is fixedly connected to the bottom of the annular sample chamber 1. Lifting devices 5 are fixedly connected to the left and right sides of the top of the base plate 4. A pressing device 6 is provided between the two lifting devices 5. The cold and hot air entering through the air inlet 2 flows from the center to the surrounding area. The top of the sample holder 3 is made of heat-resistant ceramic material. The annular sample chamber 1 is vertically cylindrical. The fluid movement direction of the annular sample chamber 1 is cold and hot air flowing from the center to the surrounding area. The top of the sample holder inside the annular sample chamber 1 is made of heat-resistant material such as ceramic.

[0023] refer to Figure 1 and Figure 3 The lifting device 5 includes a frame 501, a lead screw 502, a first motor 503, and a lifting block 504. The frame 501 is fixedly connected to the top of the base plate 4. The lead screw 502 is rotatably connected to the inside of the frame 501. The first motor 503 is fixedly connected to the top of the frame 501, and the output end of the first motor 503 is fixedly connected to the top of the lead screw 502. The lifting block 504 is threadedly connected to the surface of the lead screw 502. The pressing device 6 is fixedly connected to the surface of the lifting block 504.

[0024] The above solution is adopted: by setting up the lifting device 5, the pressing device 6 can be lifted and lowered, thereby sealing the annular sample chamber 1 through the pressing device 6.

[0025] refer to Figure 1 and Figure 3 The clamping device 6 includes a crossbar 601 and an electric cylinder 602. The crossbar 601 is fixedly connected to the surface of the lifting block 504, and the electric cylinder 602 is fixedly connected to the top of the crossbar 601. The output end of the electric cylinder 602 passes through and extends out of the bottom of the crossbar 601. The output ends of the two electric cylinders 602 are fixedly connected to a cover 7. The diameter of the cover 7 is the same as the diameter of the annular sample chamber 1.

[0026] Using the above scheme: by setting up the clamping device 6, the annular sample chamber 1 can be made into a sealed space, and then hot or cold air can be injected into the annular sample chamber 1 through the air inlet 2.

[0027] refer to Figure 1 and Figure 2 A sealing ring 8 is fixedly connected to the bottom of the cap 7, and a sealing groove 9 corresponding to the sealing ring 8 is opened on the top of the annular sample chamber 1. The sealing ring 8 is inserted into the interior of the sealing groove 9.

[0028] By adopting the above solution, by setting the sealing ring 8 and the sealing groove 9, the cover 7 and the annular sample chamber 1 can form a sealed space, preventing the airflow in the annular sample chamber 1 from flowing out.

[0029] refer to Figure 4 The bottom plate 4 has grooves 10 on both the left and right sides of the top, and a moving device 11 is provided inside the groove 10. A support component 12 is provided on the surface of the moving device 11.

[0030] The above solution is adopted: by setting the groove 10, the moving device 11 and the support component 12, the moving device 11 can drive the support component 12 to move, and then the support component 12 can support the cover 7 to prevent the cover 7 from falling.

[0031] refer to Figure 4 The moving device 11 includes a second motor 1101, a drive gear 1102, a bracket 1103, a driven gear 1104, two linkage gears 1105, a chain 1106, and two threaded rods 1107. The second motor 1101 is fixedly connected to the inside of the groove 10. The drive gear 1102 is fixedly connected to the output end of the second motor 1101. The bracket 1103 is fixedly connected to the inside of the groove 10. The driven gear 1104 is rotatably connected to the surface of the bracket 1103. The drive gear 1102 is meshed with the driven gear 1104. The two linkage gears 1105 are rotatably connected to both sides of the inner wall of the groove 10. The chain 1106 is meshed with the surfaces of the driven gear 1104 and the two linkage gears 1105. The two threaded rods 1107 are rotatably connected to both sides of the inner wall of the groove 10, and the two linkage gears 1105 are fixedly connected to the surfaces of the two threaded rods 1107. The support assembly 12 is threadedly connected to the surface of the threaded rods 1107.

[0032] By adopting the above solution, the moving device 11 can drive the support component 12 to move, thereby improving the flexibility of the support component 12.

[0033] refer to Figure 4The support assembly 12 includes a pole 1201, a placement platform 1202, a compression spring 1203, and a pressure plate 1204. The pole 1201 is threaded to the surface of the threaded rod 1107. The placement platform 1202 is fixedly connected to the top of the pole 1201. The compression spring 1203 is fixedly connected to the top of the placement platform 1202. The pressure plate 1204 is fixedly connected to the other end of the compression spring 1203.

[0034] The above solution involves setting up a support component 12 to support the cover 7, preventing injury to personnel when the cover 7 falls.

[0035] The working principle of this utility model:

[0036] In use, assemble the circuit board to be tested with the sample holder 3, then start the first motor 503. The first motor 503 drives the lead screw 502 to rotate. When the lead screw 502 rotates, it drives the lifting block 504 to descend. When the lifting block 504 moves, it drives the crossbar 601 to descend. When the crossbar 601 descends, it drives the electric cylinder 602 to descend. Then, when the electric cylinder 602 moves, it drives the cover 7 to descend. When it descends to a suitable height, it starts the electric cylinder 602, which then drives the cover 7 to descend to the surface of the annular sample chamber 1. Then, the cover 7 and the annular sample chamber 1 complete the device. At this time, hot or cold air can be injected through the air inlet 2 to test the temperature of the circuit board in the annular sample chamber 1. After the test is completed, the electric cylinder 602 is activated. The machine rotates in the reverse direction, thereby lifting the cover 7. Then, the second motor 1101 can be started. The second motor 1101 drives the drive gear 1102 to rotate. When the drive gear 1102 rotates, it drives the meshing driven gear 1104 to rotate. When the driven gear 1104 rotates, it drives the two linkage gears 1105 to rotate through the chain 1106. Then, the rotation of the linkage gears 1105 drives the threaded rod 1107 to rotate. When the threaded rod 1107 rotates, it drives the threaded upright 1201 to move. Then, the movement of the upright 1201 drives the placement platform 1202, the compression spring 1203 and the pressure plate 1204 to move, thereby supporting the cover 7 through the pressure plate 1204.

[0037] In summary, this rapid temperature testing device for circuit boards solves the problem that external airflow and humidity changes can affect the test results and lead to inaccurate data when testing circuit boards. This is achieved through the coordinated use of annular sample chamber 1, air inlet 2, sample holder 3, base plate 4, lifting device 5, clamping device 6, cover 7, sealing ring 8, sealing groove 9, groove 10, moving device 11, and support assembly 12.

[0038] It should be noted that the first motor, the second motor, and the electric cylinder are all existing devices or equipment, or devices or equipment that can be implemented with existing technology. Furthermore, the specific composition and principle of the power supply of the first motor, the second motor, and the electric cylinder are clear to those skilled in the art, and therefore will not be described in detail.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] Although 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 alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A rapid temperature testing device for circuit boards, comprising an annular sample chamber (1), an air inlet (2), and a sample holder (3), characterized in that: The air inlet (2) is fixedly connected to the center of the annular sample chamber (1). The sample rack (3) is fixedly connected to the inside of the annular sample chamber (1). The sample rack (3) is a number of racks and is fixedly connected to the inside of the annular sample chamber (1) in a radial and equidistant manner. The bottom of the annular sample chamber (1) is fixedly connected to a base plate (4). Lifting devices (5) are fixedly connected to the left and right sides of the top of the base plate (4). A pressing device (6) is provided between the two lifting devices (5). The cold air and hot air entering through the air inlet (2) flow from the center to the surrounding area.

2. The rapid temperature testing device for circuit boards as described in claim 1, characterized in that: The lifting device (5) includes a frame (501), a lead screw (502), a first motor (503), and a lifting block (504). The frame (501) is fixedly connected to the top of the base plate (4). The lead screw (502) is rotatably connected to the inside of the frame (501). The first motor (503) is fixedly connected to the top of the frame (501), and the output end of the first motor (503) is fixedly connected to the top of the lead screw (502). The lifting block (504) is threadedly connected to the surface of the lead screw (502). The pressing device (6) is fixedly connected to the surface of the lifting block (504).

3. The rapid temperature testing device for circuit boards as described in claim 2, characterized in that: The clamping device (6) includes a crossbar (601) and an electric cylinder (602). The crossbar (601) is fixedly connected to the surface of the lifting block (504), and the electric cylinder (602) is fixedly connected to the top of the crossbar (601). The output end of the electric cylinder (602) passes through and extends out of the bottom of the crossbar (601). The output ends of the two electric cylinders (602) are fixedly connected to a cover (7). The diameter of the cover (7) is the same as the diameter of the annular sample chamber (1).

4. The rapid temperature testing device for circuit boards as described in claim 3, characterized in that: A sealing ring (8) is fixedly connected to the bottom of the cover (7), and a sealing groove (9) corresponding to the sealing ring (8) is opened on the top of the annular sample chamber (1). The sealing ring (8) is inserted into the inside of the sealing groove (9).

5. The rapid temperature testing device for circuit boards as described in claim 1, characterized in that: The bottom plate (4) has grooves (10) on both the left and right sides of the top. A moving device (11) is provided inside the groove (10), and a support component (12) is provided on the surface of the moving device (11).

6. The rapid temperature testing device for circuit boards as described in claim 5, characterized in that: The moving device (11) includes a second motor (1101), a drive gear (1102), a bracket (1103), a driven gear (1104), two linkage gears (1105), a chain (1106), and two threaded rods (1107). The second motor (1101) is fixedly connected to the inside of the groove (10), the drive gear (1102) is fixedly connected to the output end of the second motor (1101), the bracket (1103) is fixedly connected to the inside of the groove (10), and the driven gear (1104) is rotatably connected to the surface of the bracket (1103). The drive gear (1102) is meshed with the driven gear (1104), the two linkage gears (1105) are rotatably connected to both sides of the inner wall of the groove (10), the chain (1106) is meshed with the surfaces of the driven gear (1104) and the two linkage gears (1105), the two threaded rods (1107) are rotatably connected to both sides of the inner wall of the groove (10), and the two linkage gears (1105) are fixedly connected to the surfaces of the two threaded rods (1107), and the support assembly (12) is threadedly connected to the surface of the threaded rods (1107).

7. The rapid temperature testing device for circuit boards as described in claim 6, characterized in that: The support assembly (12) includes a pole (1201), a platform (1202), a compression spring (1203), and a pressure plate (1204). The pole (1201) is threaded to the surface of a threaded rod (1107). The platform (1202) is fixedly connected to the top of the pole (1201). The compression spring (1203) is fixedly connected to the top of the platform (1202). The pressure plate (1204) is fixedly connected to the other end of the compression spring (1203).

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