A circuit board testing platform for electronic information engineering

Abstract

The present invention relates to the technical field of circuit board testing, and in particular to a circuit board testing platform for electronic information engineering; it comprises a testing platform and a cylinder fixedly connected to the upper surface of the testing platform through a testing frame; the cylinder output shaft is fixedly connected to a contact pin through a needle plate; square testing slots are provided through the upper and lower parts of the testing platform; main rotating slots are provided through the upper and lower parts of the testing platform; two main rotating slots are distributed on both sides of the testing slot and are connected to the testing slot; a loading box is provided at the lower notch of the testing slot; the bottom of the loading box is connected to a push plate through a first spring; the present invention enables multiple circuit boards loaded in the loading box to cooperate with the rotation of two main spiral plates, so that multiple circuit boards can complete the loading test process by themselves, and compared with the traditional manual loading of circuit boards, the testing efficiency of the circuit board testing platform is greatly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of circuit board testing, in particular to a circuit board testing platform for electronic information engineering. Background Art

[0002] In electronic information engineering, a circuit board test platform is a tool used to inspect and verify the functionality and performance of a circuit board. It is typically used during the quality control and product testing phases of the manufacturing process to ensure the circuit board operates properly and meets design requirements.

[0003] During the circuit board testing process, the tester needs to place the circuit boards one by one onto the pallet on the upper surface of the circuit board testing platform, and after the circuit board is clamped, control the cylinder above the circuit board to move downward. The downward-moving cylinder will drive the needle plate and multiple test pins on the lower surface of the needle plate to move downward. The downward-moving pins will contact the metal contact positions on the circuit board to test the circuit board. After the test is completed, the cylinder will drive the needle plate and the pins to move upward. Finally, the tester needs to remove the tested circuit board and place a new circuit board to be tested. This process is repeated. The loading of the circuit boards needs to be placed manually by the tester, which is undoubtedly inefficient and laborious for mass production.

[0004] In view of this, in order to overcome the above technical problems, the present invention proposes a circuit board testing platform for electronic information engineering, which solves the above technical problems. Summary of the Invention

[0005] In order to make up for the shortcomings of the existing technology, the present invention proposes a circuit board testing platform for electronic information engineering. The present invention loads multiple circuit boards in a loading box and cooperates with the rotation of two main spiral plates, so that multiple circuit boards can complete the loading and testing process by themselves. Compared with traditional manual circuit board loading, the testing efficiency of the circuit board testing platform is greatly improved.

[0006] The technical solution adopted by the present invention to solve its technical problems is: the present invention describes a circuit board testing platform for electronic information engineering, comprising a test bench and a cylinder fixedly connected to the upper surface of the test bench through a test frame; the cylinder output shaft is fixedly connected to the contact pin through a needle plate; the test bench is provided with square test slots from top to bottom; the test bench is provided with main rotating slots from top to bottom; two main rotating slots are distributed on both sides of the test slot and are connected to the test slot; a loading box is provided at the lower slot of the test slot; the bottom of the loading box is connected to the push plate through a first spring; a circuit board is placed in the inner space of the loading box above the push plate; the main rotating column is rotatably connected in the main rotating slot; the center of the upper surface of the main rotating column is connected to the inner side of the test frame through a main motor; the outer wall of the main rotating column is provided with a main spiral plate; the pitch of the main spiral plate is adapted to the distance between upper and lower adjacent circuit boards; the main spiral plate can be inserted into the gap between adjacent circuit boards during rotation and drive multiple circuit boards to move upward.

[0007] Preferably, the test bench is provided with an auxiliary rotating groove running through the upper and lower parts; the auxiliary rotating groove is located behind the test groove and is connected to the test groove; the auxiliary rotating column is rotatably connected in the auxiliary rotating groove; the center of the upper surface of the auxiliary rotating column is connected to the inner side of the test frame through an auxiliary motor; the outer wall of the auxiliary rotating column is provided with an auxiliary spiral plate; the auxiliary spiral plate can be inserted into the gap between adjacent circuit boards during rotation.

[0008] Preferably, the auxiliary motor output shaft is fixedly connected to a spring piece; the spring piece is arranged close to the upper end of the auxiliary rotating column; the spring piece can push the circuit board above the test slot to move away.

[0009] Preferably, the pitch of the main spiral plate and the auxiliary spiral plate at the lower position is adapted to the distance between adjacent circuit boards; the pitch of the main spiral plate and the auxiliary spiral plate at the upper position increases from bottom to top; the distance between upper and lower adjacent circuit boards increases as the main spiral plate is transferred from bottom to top.

[0010] Preferably, the main spiral plate is sleeved on the outer wall of the main rotating column; the main spiral plate is fixedly connected to the main rotating column at its lower end; the auxiliary spiral plate is sleeved on the outer wall of the auxiliary rotating column; the auxiliary spiral plate is fixedly connected to the auxiliary rotating column at its lower end; the main spiral plate and the auxiliary spiral plate are elastic and can be reset after being compressed.

[0011] Preferably, vertical grooves are provided at the upper positions of the outer walls of the main rotating column and the auxiliary rotating column; vertical bars are slidably connected in the vertical grooves; the upper ends of the main spiral plate and the auxiliary spiral plate are fixedly connected to the corresponding vertical bars; the pitch of the main spiral plate and the auxiliary spiral plate after the corresponding vertical bars move downward is greater than the distance between the upper and lower adjacent circuit boards.

[0012] Preferably, cylindrical grooves connected to the vertical grooves are provided inside the main rotating column and the auxiliary rotating column; a cylindrical cylinder with an inverted opening facing downward is slidingly and sealably connected inside the cylindrical groove; the cylindrical cylinder is fixedly connected to the corresponding vertical bar; a single-turn elastic strip is provided along the spiral line at the upper end of the main spiral plate and the auxiliary spiral plate; the inner space of the elastic strip is connected to the bottom wall of the cylindrical cylinder through a first air hole.

[0013] Preferably, the lower surface of the test bench is fixed with L-shaped slide rails parallel to each other on both sides of the loading box; the upper end of the loading box is flanged toward both sides; the loading box slides and fits inside the two L-shaped slide rails; a lower circular groove is provided at the flange position at the upper end of the loading box; an upper circular groove is provided on the lower surface of one of the main rotating columns; an upper circular block is slidably connected in the upper circular groove; a guide surface is obliquely provided at the lower end of the upper circular block; the upper end of the upper circular block is connected to the bottom of the upper circular groove by an upper spring; the lower circular groove corresponds to the position of the upper circular groove after the loading box moves; the lower end of the upper circular block is stuck in the lower circular groove under the action of the upper spring.

[0014] Preferably, the sliding seal in the lower circular groove is connected to the lower disc; the lower disc is connected to the bottom of the lower circular groove through a lower spring; the lower disc is eccentrically fixed to the semi-arc protrusion; the push plate is slidingly sealed and connected to the inner wall of the feeding box; the bottom wall of the feeding box and the inner wall of the lower circular groove are connected through a second air hole; the lower disc blocks the second air hole in the initial state.

[0015] The beneficial effects of the present invention are as follows:

[0016] The present invention enables multiple circuit boards loaded in the loading box to cooperate with the rotation of two main spiral plates, so that multiple circuit boards can complete the loading and testing process independently. Compared with traditional manual circuit board loading, the testing efficiency of the circuit board testing platform is greatly improved.

[0017] In the present invention, when the stylus contacts the contact point on the circuit board as the needle plate moves downward, the three-point support formed by the two main spiral plates and the auxiliary spiral plate makes the circuit board under test less likely to shake during the test process, thereby improving the stability of the circuit board test; the spring piece accumulates force by pressing against the rear of the circuit board as the auxiliary motor rotates, and is pushed out by the spring piece at the moment the top circuit board moves out of the upper port of the test slot, thereby achieving the purpose of automatic unloading of the circuit board under test, and further improving the test efficiency of the circuit board.

[0018] In the present invention, the gas in the space below the cylindrical tube in the cylindrical groove is pressurized and enters the elastic strip along the first air hole, so that the elastic strips on the main spiral plate and the auxiliary spiral plate are pressurized and expanded. The elastic strip can be understood as a spiral capsule strip. After the elastic strip expands, it can provide buffering and support for the downward movement of the tested circuit board. The expanded elastic strip fills the gap between the main spiral plate and the auxiliary spiral plate and the lower surface of the circuit board, so that the circuit board is supported more stably, avoiding the tilt of the circuit board affecting the contact of the stylus, and improving the circuit board detection accuracy and stability.

[0019] In the present invention, the upper round block will squeeze the protrusion to overcome the lower spring and drive the lower disc to move downward, so that the second air hole is exposed, and the external air can enter the interior of the loading box along the second air hole, so that the push plate moves upward under the action of the first spring. After the main spiral plate drives the circuit board to move up one position, the protrusion will open the second air hole once, so that the push plate moves up with the upward movement of the circuit board, avoiding the push plate from constantly squeezing the circuit boards stacked above under the action of the elastic force of the first spring, thereby reducing the damage of the stacked circuit boards in the loading box, and further improving the stability of the test platform for testing circuit boards. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 is a perspective view of the present invention;

[0022] Figure 2 It is a position diagram of the shrapnel of the present invention;

[0023] Figure 3 yes Figure 2 Enlarged view of point A in the middle;

[0024] Figure 4 It is a three-dimensional diagram of the main spiral plate and the auxiliary spiral plate in the present invention;

[0025] Figure 5 is a cross-sectional view of the present invention;

[0026] Figure 6 yes Figure 5 Enlarged view of point B in the middle;

[0027] Figure 7 It is a three-dimensional diagram of the main spiral plate and the main rotating column in the present invention;

[0028] Figure 8 It is a cross-sectional view of the main rotating column.

[0029] In the figure: test bench 1, test slot 11, main rotating slot 12, auxiliary rotating slot 13, L-shaped slide rail 14, test frame 2, cylinder 21, needle plate 22, contact pin 23, loading box 3, first spring 31, push plate 32, lower circular groove 33, lower disc 34, lower spring 35, protrusion 36, second air hole 37, main rotating column 4, main motor 41, main spiral plate 42, vertical slot 43, vertical bar 44, cylindrical slot 45, cylindrical tube 46, elastic strip 47, first air hole 48, upper circular slot 49, auxiliary rotating column 5, auxiliary motor 51, auxiliary spiral plate 52, spring piece 53, upper round block 6, guide surface 61, upper spring 62. DETAILED DESCRIPTION

[0030] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0031] like Figures 1 to 8 As shown, the present invention includes the following embodiments:

[0032] Example 1:

[0033] A circuit board test platform for electronic information engineering, comprising a test bench 1 and a cylinder 21 fixedly connected to the upper surface of the test bench 1 through a test frame 2; the output shaft of the cylinder 21 is fixedly connected to a contact pin 23 through a needle plate 22; a square test slot 11 is provided through the upper and lower parts of the test bench 1; a main rotating slot 12 is provided through the upper and lower parts of the test bench 1; two main rotating slots 12 are distributed on both sides of the test slot 11 and are connected to the test slot 11; a loading box 3 is provided at the lower notch of the test slot 11; the bottom of the loading box 3 is connected to the test slot 11 by a first spring. 31 is connected to the push plate 32; the circuit board is placed in the space inside the loading box 3 above the push plate 32; the main rotating column 4 is connected to the main rotating groove 12 in rotation; the center of the upper surface of the main rotating column 4 is connected to the inner side of the test frame 2 through the main motor 41; the outer wall of the main rotating column 4 is provided with a main spiral plate 42; the pitch of the main spiral plate 42 is adapted to the distance between the upper and lower adjacent circuit boards; the main spiral plate 42 can be inserted into the gap between adjacent circuit boards during rotation and drive multiple circuit boards to move upward; the bottom of the test bench 1 is supported by legs;

[0034] During operation, during the circuit board testing process, the tester needs to place the circuit boards onto the support plate on the upper surface of the circuit board testing platform in sequence, and after the circuit boards are clamped, control the cylinder 21 above the circuit boards to move downward, and the downward-moving cylinder 21 will drive the needle plate 22 and the multiple test contact pins 23 on the lower surface of the needle plate 22 to move downward, and the contact pins 23 after moving downward will contact the metal contact positions on the circuit board, thereby testing the circuit board. After the test is completed, the cylinder 21 will drive the needle plate 22 and the contact pins 23 to move upward, and finally the tester needs to remove the circuit board that has completed the test and place a new circuit board that needs to be tested. This is repeated, and the loading of the circuit boards requires the tester to place them manually, which is undoubtedly inefficient and laborious for mass production.

[0035] Therefore, before testing the circuit boards, the staff of the present invention will place the circuit boards in a stacked manner above the push plate 32 inside the loading box 3. With the action of the first spring 31, the first spring 31 will push the push plate 32 upward. During the upward movement of the push plate 32, the stacked circuit boards above will be driven to move upward. Each circuit board has electronic components soldered on its upper surface. Therefore, a toggle gap is formed between adjacent circuit boards under the action of the electronic components. During the upward movement of multiple stacked circuit boards, they will enter the inner side of the lower notch of the test slot 11. The inner cross-section of the loading box 3 is adapted to the inner cross-section of the test slot 11. With the control of the controller, the control The controller controls the automatic operation of the test platform, and the controller controls the two main motors 41 to rotate in opposite directions. The two main spiral plates 42 are symmetrically arranged about the test slot 11. During the rotation of the main motor 41, the corresponding main rotating column 4 is driven to rotate in the main rotating slot 12. During the rotation of the main rotating column 4, the main spiral plate 42 connected to the outer wall is driven to rotate. During the rotation of the main spiral plate 42, the main spiral plate 42 is inserted into the toggle gap formed by the upper and lower adjacent circuit boards. As the main spiral plate 42 rotates, multiple circuit boards will move up in the test slot 11 under the rotation of the two main spiral plates 42 until the uppermost circuit board moves to the test slot 11. After the upper port is inside, it stops moving, and then the controller controls the cylinder 21 to extend. During the extension of the cylinder 21, the needle plate 22 is driven to move downward. During the downward movement of the needle plate 22, the contact pin 23 connected to the lower surface is driven to move downward. After the contact pin 23 moves downward, it corresponds to the contact point on the circuit board. In this way, the test is performed after the two are in contact. After the test of the circuit board is completed, the controller drives the cylinder 21 to shorten. During the shortening of the cylinder 21, the needle plate 22 is driven to move upward. During the upward movement of the needle plate 22, the contact pin 23 on the lower surface is driven to break away from the contact with the circuit board. The main motor 41 continues to drive the multiple circuit boards in the test slot 11 to move upward. After being tested, the topmost circuit board is driven upward by the main spiral plate 42 and removed from the inner side of the upper port of the test slot 11, while the next circuit board moves to the lower notch of the test slot 11. The inner wall of the test slot 11 adapts to the shape of the circuit board, so it is not easy to shake during the circuit board testing process, which facilitates the contact test of the stylus 23. After the topmost circuit board is ejected from the inner side of the upper port of the test slot 11, the tester removes the tested circuit board and then controls the cylinder 21 to extend again to drive the needle plate 22 and the stylus 23 downward. This process is repeated to complete the continuous loading and testing process of multiple circuit boards.

[0036] The present invention enables multiple circuit boards loaded in the loading box 3 to cooperate with the rotation of the two main spiral plates 42, so that multiple circuit boards can complete the loading and testing process independently. Compared with traditional manual circuit board loading, the testing efficiency of the circuit board testing platform is greatly improved.

[0037] Example 2:

[0038] The test bench 1 is provided with an auxiliary rotation slot 13 running through the upper and lower parts; the auxiliary rotation slot 13 is located behind the test slot 11 and is connected to the test slot 11; the auxiliary rotation column 5 is rotatably connected in the auxiliary rotation slot 13; the center of the upper surface of the auxiliary rotation column 5 is connected to the inner side of the test frame 2 through the auxiliary motor 51; the outer wall of the auxiliary rotation column 5 is provided with an auxiliary spiral plate 52; the auxiliary spiral plate 52 can be inserted into the gap between adjacent circuit boards during rotation.

[0039] In this embodiment, the output shaft of the auxiliary motor 51 is fixedly connected to a spring 53; the spring 53 is arranged near the upper end of the auxiliary rotating column 5; the spring 53 can push the circuit board above the test slot 11 to move away;

[0040] During operation, the first spring 31 drives multiple stacked circuit boards to move up the inner side of the loading box 3. The top circuit board will contact the main spiral plate 42 and the auxiliary spiral plate 52, and under the rotation of the main motor 41 and the auxiliary motor 51, the main rotating column 4 and the auxiliary rotating column 5 will rotate. Since the two main spiral plates 42 are symmetrically arranged, the two main spiral plates 42 rotate in opposite directions, and the auxiliary rotating column 5 drives the auxiliary spiral plate 52 to rotate during the rotation. During the rotation of the auxiliary spiral plate 52, it will insert into the gap position between adjacent circuit boards, and with the cooperation of the main spiral plate 42, multiple circuit boards are transported from bottom to top inside the test slot 11. During the upward movement of the circuit boards, they can be transported at three points of the two main spiral plates 42 and one auxiliary spiral plate 52, thereby making the loading of multiple circuit boards more stable. In addition, after the top circuit board moves up to the test position inside the upper port of the test slot 11, the control The device controls the cylinder 21 to drive the needle plate 22 and the contact pin 23 on the lower surface to move downward. After the contact pin 23 moves downward, it contacts the contact point on the surface of the uppermost circuit board to realize the test. Since the circuit board is supported by three points, the circuit board is more stable during the test process and is not easy to tilt or shift, thereby improving the test accuracy. After completing the test of the uppermost circuit board, the cylinder 21 will drive the needle plate 22 and the contact pin 23 to move upward, the auxiliary motor 51 and the main motor 41 continue to rotate, and the multiple circuit boards in the test slot 11 will move upward. During the rotation of the auxiliary motor 51, the spring piece 53 will be driven to rotate. During the rotation of the spring piece 53, it will abut against the rear edge of the circuit board that is not exposed to the upper port of the test slot 11, and at the moment when the uppermost circuit board moves out of the upper port of the test slot 11, the spring piece 53 pushes the uppermost circuit board from the top of the test slot 11 toward the front side, so that the tested circuit board moves out of the front of the test table 1.

[0041] In this embodiment, when the stylus 23 contacts the contact point on the circuit board as the needle plate 22 moves downward, the three-point support formed by the two main spiral plates 42 and the auxiliary spiral plate 52 makes the tested circuit board less likely to shake during the test process, thereby improving the stability of the circuit board test; the spring piece 53 accumulates force against the back of the circuit board as the auxiliary motor 51 rotates, and is pushed out by the spring piece 53 at the moment the top circuit board moves out of the upper port of the test slot 11, thereby achieving the purpose of automatic unloading of the tested circuit board, and further improving the test efficiency of the circuit board.

[0042] Example 3:

[0043] The pitch of the main spiral plate 42 and the auxiliary spiral plate 52 at the lower position is adapted to the distance between adjacent circuit boards; the pitch of the main spiral plate 42 and the auxiliary spiral plate 52 at the upper position increases from bottom to top; the distance between upper and lower adjacent circuit boards increases as the main spiral plate 42 is transported from bottom to top.

[0044] In this embodiment, the main spiral plate 42 is sleeved on the outer wall of the main rotating column 4; the main spiral plate 42 is fixedly connected to the main rotating column 4 at the lower end; the auxiliary spiral plate 52 is sleeved on the outer wall of the auxiliary rotating column 5; the auxiliary spiral plate 52 is fixedly connected to the auxiliary rotating column 5 at the lower end; the main spiral plate 42 and the auxiliary spiral plate 52 are elastic and can be reset after being compressed.

[0045] In this embodiment, a vertical groove 43 is provided at the upper position of the outer wall of the main rotating column 4 and the auxiliary rotating column 5; a vertical bar 44 is slidably connected in the vertical groove 43; the upper end of the main spiral plate 42 and the auxiliary spiral plate 52 are fixedly connected to the corresponding vertical bar 44; the pitch of the main spiral plate 42 and the auxiliary spiral plate 52 after the corresponding vertical bar 44 moves downward is greater than the distance between the upper and lower adjacent circuit boards.

[0046] In this embodiment, a cylindrical groove 45 communicating with the vertical groove 43 is provided inside the main rotating column 4 and the auxiliary rotating column 5; an inverted cylindrical tube 46 with its opening facing downward is slidably and sealedly connected in the cylindrical groove 45; the cylindrical tube 46 is fixedly connected to the corresponding vertical bar 44; a single-turn elastic strip 47 is provided along the spiral line near the upper end of the main spiral plate 42 and the auxiliary spiral plate 52; the space inside the elastic strip 47 is connected to the bottom wall of the cylindrical tube 46 via a first air hole 48;

[0047] During operation, the rotation of the main rotating column 4 and the auxiliary rotating column 5 will cause the corresponding main spiral plate 42 and the auxiliary spiral plate 52 to rotate. During the rotation of the main spiral plate 42 and the auxiliary spiral plate 52, multiple circuit boards in the test slot 11 will be driven to move upward. Since the pitch of the upper position of the main spiral plate 42 and the auxiliary spiral plate 52 increases from bottom to top, the distance between adjacent circuit boards increases with the upward transmission of the main spiral plate 42 and the auxiliary spiral plate 52. After the adjacent circuit boards are out of contact with each other and move away from each other, the circuit boards are prevented from being damaged by pressure contact. After the top circuit board moves to the position to be tested, the cylinder 21 will drive the needle plate 22 and the contact pins 23 on the lower surface of the needle plate 22 to move downward to contact the contacts on the circuit board, so that the top circuit board is tested. If the contact pins 23 squeeze the circuit board too much, the top circuit board will move downward. During the downward movement of the circuit board, the elastic force of the main spiral plate 42 and the auxiliary spiral plate 52 will be overcome. The material of the main spiral plate 42 and the auxiliary spiral plate 52 can be made of spring steel. The main spiral plate 42 and the auxiliary spiral plate 52 provide buffer and support for the circuit board during the downward movement of the top circuit board, and the tested circuit board moves downward to avoid the loss of the circuit board caused by the rigid test. As the main spiral plate 42 and the auxiliary spiral plate 52 move downward near the upper end, the corresponding vertical bar 44 is driven to move downward along the corresponding vertical groove 43. During the downward movement of the vertical bar 44, the cylindrical tube 46 is driven to move downward, so that the gas in the space below the cylindrical tube 46 in the cylindrical groove 45 is pressurized and enters the elastic bar 47 along the first air hole 48, so that the elastic bar 47 on the main spiral plate 42 and the auxiliary spiral plate 52 is pressurized and expanded. The elastic bar 47 can be understood as a spiral capsule bar. After the elastic bar 47 expands, it can provide buffer and support for the downward movement of the tested circuit board. The expanded elastic bar 47 fills the gap between the main spiral plate 42 and the auxiliary spiral plate 52 and the lower surface of the circuit board, so that the circuit board is supported more stably, avoiding the tilt of the circuit board affecting the contact of the stylus 23, and improving the accuracy and stability of circuit board detection.

[0048] After completing the test of the circuit board, the cylinder 21 will drive the needle plate 22 and the contact needle 23 to move upward, and the tested circuit board will move up. The main spiral plate 42 and the auxiliary spiral plate 52 will reset, so that the cylindrical tube 46 moves up as the corresponding vertical bar 44 moves upward, so that the gas in the elastic strip 47 enters the cylindrical groove 45 space below the cylindrical tube 46 along the first air hole 48 under the action of negative pressure. The gas inside the elastic strip 47 is extracted and deflated, so as to prevent the bulging elastic strip 47 from affecting the transmission of the main spiral plate 42 or the auxiliary spiral plate 52 to the circuit board.

[0049] Example 4:

[0050] The lower surface of the test bench 1 and the two sides of the loading box 3 are fixedly connected with L-shaped slide rails 14 parallel to each other; the upper end of the loading box 3 is flanged toward both sides; the loading box 3 slides and fits inside the two L-shaped slide rails 14; the flange position of the upper end of the loading box 3 is provided with a lower circular groove 33; one of the main rotating columns 4 is provided with an upper circular groove 49 on the lower surface; the upper circular block 6 is slidably connected in the upper circular groove 49; the upper circular block 6 is provided with a guide surface 61 at an angle at the lower end; the upper end of the upper circular block 6 is connected to the bottom of the upper circular groove 49 by an upper spring 62; the lower circular groove 33 corresponds to the position of the upper circular groove 49 after the loading box 3 moves; the lower end of the upper circular block 6 is stuck in the lower circular groove 33 under the action of the upper spring 62.

[0051] In this embodiment, the lower circular groove 33 is slidably and sealably connected to the lower disc 34; the lower disc 34 is connected to the bottom of the lower circular groove 33 via a lower spring 35; the lower disc 34 is eccentrically fixedly connected to a semi-arc-shaped protrusion 36; the push plate 32 is slidably and sealably connected to the inner wall of the loading box 3; the bottom wall of the loading box 3 and the inner wall of the lower circular groove 33 are connected via a second air hole 37; the lower disc 34 blocks the second air hole 37 in the initial state;

[0052] When working, one end of the two L-shaped slide rails 14 extends toward the front side of the test table 1, and the other end extends toward the rear side of the test table 1. When multiple stacked circuit boards are placed in the loading box 3, the push plate 32 is squeezed, and the lower disc 34 is controlled to expose the second air hole 37, so that the push plate 32 moves downward to discharge the lower gas along the second air hole 37 to the lower circular groove 33, and finally discharged along the upper end of the lower circular groove 33. After the circuit boards in the loading box 3 are loaded, the lower disc 34 is released, and the lower disc 34 moves upward under the action of the lower spring 35 to block the second air hole 37, thereby locking the push plate 32; then, before the loading box 3 slides along the inner side of the L-shaped slide rail 14, The main motor 41 drives the main rotating column 4, the upper spring 62 and the upper round block 6 to rotate, so that the guide surface 61 of the upper round block 6 faces the front side of the test bench 1, and then the loading box 3 starts to slide toward the rear from the front side of the L-shaped slide rail 14. During the backward sliding process of the loading box 3, the guide surface 61 of the upper round block 6 is squeezed, so that the upper round block 6 is pressed to overcome the upper spring 62 and moves upward. The lower circular groove 33 is aligned with the upper circular groove 49 after the loading box 3 moves. The upper round block 6 is stuck in the lower circular groove 33 under the action of the upper spring 62, thereby locking the loading box 3 and preventing the loading box 3 from shifting. In the process of the spiral plate being driven by the main motor 41 to rotate, the main motor 41 will drive the main rotating column 4 and the fixed upper spring The spring 62 and the upper round block 6 rotate, and the upper round block 6 will squeeze the protrusion 36 to overcome the lower spring 35 and drive the lower disc 34 to move downward, so that the second air hole 37 is exposed, and the external air can enter the interior of the loading box 3 along the second air hole 37, so that the push plate 32 moves upward under the action of the first spring 31. After the main spiral plate 42 drives the circuit board to move up one position, the protrusion 36 will open the second air hole 37 once, so that the push plate 32 moves up with the upward movement of the circuit board, avoiding the push plate 32 from constantly squeezing the stacked circuit boards above under the elastic force of the first spring 31, thereby reducing the damage of the stacked circuit boards in the loading box 3, making the test platform stable in testing circuit boards. The performance is further improved; the upper surface of the push plate 32 is fixedly connected to the pad, which can screw the last circuit board into the test slot 11 under the rotation of the main spiral plate 42. After the last circuit board enters the test slot 11, the guide surface 61 of the upper round block 6 is controlled to face the front side, and the new loading box 3 is controlled to slide from the inside of the L-shaped slide rail 14. The new loading box 3 pushes the old loading box 3 from under the test slot 11 to complete the replacement of the loading box 3 and prepare for the subsequent continuous testing of the circuit boards; in the process of the old loading box 3 moving out from the rear side, the front and rear arc surfaces of the pad play a guiding role, and after being pressed, they can overcome the slight downward movement of the push plate 32, and there will be no interference or jamming.

[0053] In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the attached Figure 1The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood as limiting the scope of protection of the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0054] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the foregoing embodiments. The foregoing embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A circuit board testing platform for electronic information engineering, comprising a testing platform (1) and a cylinder (21) fixedly connected to the upper surface of the testing platform (1) through a testing frame (2); an output shaft of the cylinder (21) fixedly connected to a contact pin (23) through a needle plate (22); characterized in that: The test bench (1) is provided with a square test slot (11) running through the upper and lower parts; the test bench (1) is provided with a main rotating slot (12) running through the upper and lower parts; the two main rotating slots (12) are distributed on both sides of the test slot (11) and are connected to the test slot (11); a loading box (3) is provided at the lower slot of the test slot (11); the bottom of the loading box (3) is connected to a push plate (32) through a first spring (31); a circuit board is placed in the inner space of the loading box (3) above the push plate (32); a main rotating column (4) is rotatably connected in the main rotating slot (12); the center of the upper surface of the main rotating column (4) is connected to the inner side of the test frame (2) through a main motor (41); a main spiral plate (42) is provided on the outer wall of the main rotating column (4); the pitch of the main spiral plate (42) is adapted to the distance between upper and lower adjacent circuit boards; the main spiral plate (42) can be inserted into the gap between adjacent circuit boards during rotation and drive multiple circuit boards to move upward; The pitch of the main spiral plate (42) and the auxiliary spiral plate (52) at the lower position is adapted to the distance between adjacent circuit boards; the pitch of the main spiral plate (42) and the auxiliary spiral plate (52) at the upper position increases from bottom to top; the distance between upper and lower adjacent circuit boards increases as the main spiral plate (42) is transported from bottom to top; The main spiral plate (42) is sleeved on the outer wall of the main rotating column (4); the main spiral plate (42) is fixedly connected to the main rotating column (4) at its lower end; the auxiliary spiral plate (52) is sleeved on the outer wall of the auxiliary rotating column (5); the auxiliary spiral plate (52) is fixedly connected to the auxiliary rotating column (5) at its lower end; the main spiral plate (42) and the auxiliary spiral plate (52) are elastic and can be reset after being compressed; A vertical groove (43) is provided at the upper position of the outer wall of the main rotating column (4) and the auxiliary rotating column (5); a vertical bar (44) is slidably connected in the vertical groove (43); the upper end of the main spiral plate (42) and the auxiliary spiral plate (52) is fixedly connected to the corresponding vertical bar (44); the pitch of the main spiral plate (42) and the auxiliary spiral plate (52) after the corresponding vertical bar (44) moves downward is greater than the distance between the upper and lower adjacent circuit boards; The main rotating column (4) and the auxiliary rotating column (5) are provided with cylindrical grooves (45) in communication with the vertical grooves (43); the cylindrical grooves (45) are slidably sealed to be connected with an inverted cylindrical tube (46) with its opening facing downward; the cylindrical tube (46) is fixedly connected to the corresponding vertical bar (44); a single-turn elastic strip (47) is provided along the spiral line at the upper end of the main spiral plate (42) and the auxiliary spiral plate (52); the inner space of the elastic strip (47) is connected to the bottom wall of the cylindrical tube (46) through a first air hole (48).

2. The circuit board testing platform for electronic information engineering according to claim 1, characterized in that: The test bench (1) is provided with an auxiliary rotating groove (13) running through the upper and lower parts; the auxiliary rotating groove (13) is located behind the test groove (11) and is connected to the test groove (11); the auxiliary rotating column (5) is rotatably connected in the auxiliary rotating groove (13); the center of the upper surface of the auxiliary rotating column (5) is connected to the inner side of the test frame (2) through an auxiliary motor (51); the outer wall of the auxiliary rotating column (5) is provided with an auxiliary spiral plate (52); the auxiliary spiral plate (52) can be inserted into the gap between adjacent circuit boards during the rotation process.

3. The circuit board testing platform for electronic information engineering according to claim 2, characterized in that: The output shaft of the auxiliary motor (51) is fixedly connected to a spring sheet (53); the spring sheet (53) is arranged close to the upper end of the auxiliary rotating column (5); the spring sheet (53) can push the circuit board above the test slot (11) to move away.

4. The circuit board testing platform for electronic information engineering according to claim 1, characterized in that: The lower surface of the test bench (1) and the two sides of the loading box (3) are fixedly connected with L-shaped slide rails (14) parallel to each other; the upper end of the loading box (3) is flanged toward the two sides; the loading box (3) slides and fits inside the two L-shaped slide rails (14); a lower circular groove (33) is provided at the flanged position of the upper end of the loading box (3); an upper circular groove (49) is provided on the lower surface of one of the main rotating columns (4); an upper circular block (6) is slidably connected in the upper circular groove (49); a guide surface (61) is obliquely provided at the lower end of the upper circular block (6); the upper end of the upper circular block (6) is connected to the bottom of the upper circular groove (49) by an upper spring (62); the lower circular groove (33) corresponds to the position of the upper circular groove (49) after the loading box (3) moves; the lower end of the upper circular block (6) is inserted into the lower circular groove (33) under the action of the upper spring (62).

5. The circuit board testing platform for electronic information engineering according to claim 4, characterized in that: The lower circular groove (33) is connected to the lower disc (34) in a sliding seal; the lower disc (34) is connected to the bottom of the lower circular groove (33) via a lower spring (35); the lower disc (34) is eccentrically fixed to a semi-arc-shaped protrusion (36); the push plate (32) is connected to the inner wall of the loading box (3) in a sliding seal; the bottom wall of the loading box (3) and the inner wall of the lower circular groove (33) are connected via a second air hole (37); the lower disc (34) blocks the second air hole (37) in an initial state.

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