Test fixture for DBC automatic test machine

Abstract

The invention discloses a test fixture for a DBC automatic test machine, and the fixture comprises a housing which is internally connected with a pedestal through a reset mechanism. According to the test fixture for the DBC automatic test machine, through rotation of the cam handle and combination with the first mounting hole, the base ascends and descends, the stroke of the floating plate is reduced when the fixture is locked, contact between a probe card and the test fixture is generated, the test result is qualified, a probe of the test fixture and the DBC base are opposite to each other, the probe card is fixed through a screw, and the test efficiency is improved. A blank area and a fixing opening used for being buckled with a DBC base are reserved at the position of the probe, the testing jig can complete testing on any testing machine through a corresponding testing line through the device, testing data can be verified in a cross mode, cost is low, the weight is light, and moving is flexible. A test jig of a compatible test machine is adapted to various DBC cross validation test machines; no other variables exist, and data verification is more reliable.

Description

Technical Field

[0001] This invention relates to the field of test fixture technology, specifically a test fixture for a DBC automated test machine. Background Technology

[0002] DBC testing can effectively reduce the defect rate of module packaging. It can effectively screen out defective products, reduce waste in packaging testing, and improve product yield. Currently, testing is mainly achieved through a test machine and handler. To ensure test accuracy through cross-validation, custom-designed manual DBC test fixtures are expensive and have a limited design. To match different DBC types, multiple custom fixtures are required, increasing the variability of the test fixtures. Summary of the Invention

[0003] The purpose of this invention is to provide a test fixture for a DBC automated testing machine to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, the present invention provides the following technical solution: a test fixture for a DBC automated test machine, comprising a housing, a base connected to the housing via a reset mechanism, a floating plate connected to the top of the base via a telescopic mechanism, a placement groove being provided on the top of the floating plate, side clamps being provided on both sides of the housing, and a pushing mechanism for pushing the base being provided at the bottom of the housing.

[0005] Preferably, the reset mechanism includes side plates fixedly connected to both sides of the base, and the side plates are connected to the housing via a first spring.

[0006] Preferably, the telescopic mechanism includes a plurality of first mounting holes formed at the bottom of the floating plate, and a plurality of second mounting holes formed at the top of the base. A second spring is inserted into the first mounting holes and the second mounting holes, and the two ends of the second spring are fixed to the top of the first mounting hole and the bottom of the second mounting hole, respectively.

[0007] Preferably, the pushing mechanism includes two locking blocks fixedly connected to the bottom of the housing, and the locking blocks are rotatably connected to a cam handle via a first rotating shaft.

[0008] Preferably, the side wall of the locking block is provided with a speed limiting mechanism for limiting the rotation of the cam handle, and the speed limiting mechanism includes a mounting groove formed in the side wall of the locking block, and a mounting cover is fixedly inserted in the mounting groove, and a friction block is connected to the mounting cover through a telescopic component.

[0009] Preferably, the telescopic assembly includes two first sleeve rods fixedly connected to the side wall of the friction block, and a first sleeve is sleeved on the side wall of each first sleeve rod. The other end of the first sleeve is fixed to the side wall of the mounting cover, and a first return spring is sleeved on the side wall of each first sleeve.

[0010] Preferably, the top of the floating plate is provided with multiple limiting mechanisms, which are used to limit the product placed in the placement slot. Each limiting mechanism includes a first groove formed on the top of the floating plate, and two first fixing blocks are fixedly connected in the first groove. A second sleeve rod is fixedly connected to the side wall of each first fixing block, and a second sleeve is sleeved on the side wall of each second sleeve rod. An L-shaped block is fixedly connected to the other end of the second sleeve, and a second return spring is sleeved on the side wall of each second sleeve. A first inclined plate is fixedly connected to the top of the L-shaped block, and a second inclined plate is fixedly connected to the top of the first inclined plate. A limiting component for limiting the cam handle is provided inside the mounting cover, and a push-out mechanism for pushing out the tested product is provided on the top of the floating plate.

[0011] Preferably, the limiting component includes multiple slots formed on the side wall of the cam handle, and two third sleeves are fixedly connected to the inner wall of the mounting cover. A third rod is inserted into each of the third sleeves, and a connecting block is fixedly connected to the other end of the third rod. A moving block is fixedly connected to the top of the connecting block, and a third spring is sleeved on the side wall of each third sleeve. A plug rod is fixedly connected to the side wall of the moving block, and a first inclined surface is provided on the top of the plug rod. The movement of the moving block is driven by a pushing mechanism.

[0012] Preferably, the pushing mechanism includes multiple fourth sleeves fixedly connected to the inner wall of the mounting cover, and a fourth rod is inserted into the fourth sleeve. A fixing ring is fixedly sleeved on the side wall of the fourth rod, and a fourth spring is sleeved on the side wall of the fourth sleeve. The side wall of the floating plate is connected to an oil storage tank through a fixing plate, and a telescopic pipe is fixedly connected to the bottom of the oil storage tank. The fourth sleeve communicates with the telescopic pipe through a connecting pipe. A movable disk is slidably connected inside the oil storage tank. The oil storage tank is filled with hydraulic oil. A pushing rod is fixedly connected to the top of the movable disk. A connecting plate is fixedly connected to the side wall of the L-shaped block. A trapezoidal block is fixedly connected to the bottom of the connecting plate, and the trapezoidal block includes two symmetrically arranged second inclined surfaces.

[0013] Preferably, the pushing mechanism includes a second groove formed in the top of the floating plate, and two second fixing blocks are fixedly connected to the top of the second groove. A fifth sleeve rod is fixedly connected to the side wall of each second fixing block, and a fifth sleeve is sleeved on the side wall of the fifth sleeve rod. The other end of the fifth sleeve is fixedly connected to the inclined block, and a fifth spring is sleeved on the side wall of each fifth sleeve. A support block is fixedly connected to the side wall of the floating plate, and a rotating plate is rotatably connected to the side wall of the support block through a second rotating shaft. A rubber rod is fixedly connected to the side wall of the rotating plate, and a first L-shaped frame is fixedly connected to the side wall of the connecting plate. A limiting block is fixedly connected to the top of the first L-shaped frame, and a second L-shaped frame is fixedly connected to the top of the first fixing block. A fixing cover is fixedly connected to the side wall of the second L-shaped frame, and a sliding block is slidably connected in the fixing cover through a sixth spring. A plurality of triangular blocks are fixedly connected to the bottom of the sliding block, and a third inclined surface is arranged on the side wall of the triangular block.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: <000003,Through the arrangement of the pushing mechanism and the telescopic mechanism, etc., by rotating the cam handle, the base is raised and lowered in combination with the first mounting hole, so that the stroke of the floating plate is reduced when the fixture is locked, resulting in the contact between the pin card and the test fixture, making the test result qualified. The probe of the test fixture and the DBC base are opposite to each other. The pin card is fixed by screws, leaving a blank area at the probe position and a fixing port in the form of a buckle for the DBC base. Through the above device, this test fixture can be tested on any testing machine through the corresponding test line. The test data can be cross-verified, with low cost, light weight, and flexible movement; it is compatible with the test fixture of the testing machine and adapts to a variety of DBC cross-verification testing machines; there are no other variables, and the data verification is more reliable. <OO00032>BRIEF DESCRIPTION OF THE DRAWINGS <000OO34> Figure 1 is a schematic diagram of the overall structure of the present invention; Figure 2 is a schematic diagram of the overall structure of another perspective of the present invention; Figure 3 is a partial cross-sectional structure diagram of the locking block and the mounting cover in the present invention; Figure 4 is a partial cross-sectional structure diagram of the housing, the base and the floating plate in the present invention; [[ID=ZI]] Figure 5 is a cross-sectional structure diagram of the present invention; Figure 6 is a structural diagram of the limiting mechanism and the pushing mechanism in the present invention; Figure 7 [[ID=Z9]]is Figure 2 the enlarged structural diagram of part A in ; Figure 8 is Figure 6 A magnified structural diagram at point B in the middle.

[0016] In the diagram: 1. Housing; 201. Side plate; 202. First spring; 301. Second spring; 302. First mounting hole; 303. Second mounting hole; 401. Locking block; 402. First rotating shaft; 403. Cam handle; 501. Mounting groove; 502. Mounting cover; 503. Friction block; 601. First sleeve; 602. First sleeve rod; 603. First return spring; 701. First groove; 702. L-shaped block; 703, first inclined plate; 704, second inclined plate; 705, second sleeve rod; 706, second sleeve; 707, second return spring; 708, first fixing block; 801, slot; 802, third sleeve; 803, third sleeve rod; 804, connecting block; 805, third spring; 806, moving block; 807, insertion rod; 808, first inclined surface; 901, oil reservoir; 902, fixing plate; 90 3. Moving plate; 904. Telescopic tube; 905. Connecting tube; 906. Push rod; 907. Connecting plate; 908. Trapezoidal block; 909. Second inclined plane; 910. Fourth sleeve; 911. Fourth sleeve rod; 912. Fixing ring; 913. Fourth spring; 1001. Second groove; 1002. Second fixing block; 1003. Fifth sleeve rod; 1004. Fifth sleeve; 1005. Fifth spring; 1006. 1007. Inclined block; 1008. Support block; 1009. Second rotating shaft; 1010. Rotating plate; 1011. Rubber rod; 1012. First L-shaped frame; 1013. Limiting block; 1014. Second L-shaped frame; 1015. Fixing cover; 1016. Sixth spring; 1017. Sliding block; 1018. Triangular block; 1019. Third inclined surface; 1010. Base; 1010. Floating plate; 1011. Placement slot; 102. Side clamp. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see Figures 1-8This invention provides a test fixture for an automated DBC testing machine, comprising a housing 1, a base 11 connected to the housing 1 via a reset mechanism, and a floating plate 12 connected to the top of the base 11 via a telescopic mechanism. The top of the floating plate 12 has a placement groove 13, and side clamps 14 are provided on both sides of the housing 1. A pushing mechanism for pushing the base 11 is provided at the bottom of the housing 1. By rotating a cam handle 403, combined with a first mounting hole 302, the base 11 is raised and lowered, thereby reducing the stroke of the floating plate 12 when the fixture is locked, creating contact between the probe and the test fixture, ensuring the test results are qualified. The probe and the DBC base of the test fixture are opposite to each other. The probe is fixed with screws, leaving a blank area at the probe position and a fixing port for the DBC base via a snap-fit. This device allows the test fixture to be tested on any testing machine using corresponding test lines. Test data can be cross-validated. It is low-cost, lightweight, and highly mobile; compatible with various DBC cross-validation testing machines; and has no other variables, making data verification more reliable.

[0019] Please see Figure 5 The reset mechanism includes side plates 201 fixedly connected to both sides of the base 11, and the side plates 201 are connected to the housing 1 through the first spring 202, which plays a reset role in the movement of the base 11.

[0020] Please see Figure 4 The telescopic mechanism includes multiple first mounting holes 302 opened at the bottom of the floating plate 12, and multiple second mounting holes 303 opened at the top of the base 11. Second springs 301 are inserted into the first mounting holes 302 and the second mounting holes 303, and the two ends of the second springs 301 are fixed to the top of the first mounting holes 302 and the bottom of the second mounting holes 303 respectively, to ensure the elastic connection between the floating plate 12 and the base 11.

[0021] Please see Figure 2 , Figure 4 and Figure 5 The pushing mechanism includes two locking blocks 401 fixedly connected to the bottom of the housing 1, and the locking blocks 401 are rotatably connected to the cam handle 403 through the first rotating shaft 402. When the cam handle 403 is rotated, it can push the cam handle 403 to move upward when the protruding part of the cam handle 403 abuts against the bottom of the base 11.

[0022] Please see Figure 3 and Figure 7The side wall of the locking block 401 is provided with a speed limiting mechanism for limiting the rotation of the cam handle 403. The speed limiting mechanism includes a mounting groove 501 opened in the side wall of the locking block 401, and a mounting cover 502 is fixedly inserted in the mounting groove 501. A friction block 503 is connected to the mounting cover 502 through a telescopic component. Under the action of the telescopic component, the friction block 503 can abut against the side wall of the cam handle 403, thereby limiting the rotation of the cam handle 403, making it more stable and reliable, and ensuring the test effect and service life.

[0023] Please see Figure 3 The telescopic assembly includes two first sleeve rods 602 fixedly connected to the side wall of the friction block 503, and a first sleeve 601 is sleeved on the side wall of each first sleeve rod 602. The other end of the first sleeve 601 is fixed to the side wall of the mounting cover 502, and a first return spring 603 is sleeved on the side wall of each first sleeve 601. Under the action of the first return spring 603, the friction block 503 abuts against the side wall of the cam handle 403.

[0024] Please see Figure 4 and Figure 6 The top of the floating plate 12 is provided with multiple limiting mechanisms, which are used to limit the products placed in the placement slot 13. Each limiting mechanism includes a first groove 701 opened on the top of the floating plate 12, and two first fixing blocks 708 are fixedly connected in the first groove 701. A second sleeve rod 705 is fixedly connected to the side wall of each first fixing block 708, and a second sleeve 706 is sleeved on the side wall of each second sleeve rod 705. An L-shaped block 702 is fixedly connected to the other end of the second sleeve 706, and a second return spring 707 is sleeved on the side wall of each second sleeve 706. A first inclined plate 703 is fixedly connected to the top of the L-shaped block 702, and the first... A second inclined plate 704 is fixedly connected to the top of the inclined plate 703. A limiting component for limiting the cam handle 403 is provided inside the mounting cover 502. The top of the floating plate 12 is provided with a push-out mechanism for pushing out the tested product. During testing, the product placed in the placement slot 13 can be flattened and limited to ensure that it is completely in contact with the bottom of the placement slot 13. This is more stable and reliable, ensuring the accuracy of subsequent tests. When the product is not flat, the limiting component can be triggered to limit the cam handle 403, preventing the cam handle 403 from rotating upward. This ensures that the product can be placed in the correct position before subsequent tests can be performed, thus ensuring the accuracy of the test.

[0025] Please see Figure 3The limiting component includes multiple slots 801 formed on the side wall of the cam handle 403, and two third sleeves 802 are fixedly connected to the inner wall of the mounting cover 502. A third sleeve rod 803 is inserted into each third sleeve 802, and a connecting block 804 is fixedly connected to the other end of the third sleeve rod 803. A moving block 806 is fixedly connected to the top of the connecting block 804, and a third spring 805 is sleeved on the side wall of each third sleeve 802. An insertion rod 807 is fixedly connected to the side wall of the moving block 806, and a first inclined surface 808 is provided on the top of the insertion rod 807. The movement of the moving block 806 is driven by a pushing mechanism. The pushing mechanism drives the moving block 806 to move, so that the insertion rod 807 is inserted into the slot 801 for limiting, so that the cam handle 403 cannot rotate upward.

[0026] Please see Figure 3 , Figure 6 and Figure 7 The driving mechanism includes multiple fourth sleeves 910 fixedly connected to the inner wall of the mounting cover 502, and a fourth sleeve rod 911 is inserted into the fourth sleeve 910. A fixing ring 912 is fixedly sleeved on the side wall of the fourth sleeve rod 911, and a fourth spring 913 is sleeved on the side wall of the fourth sleeve 910. The side wall of the floating plate 12 is connected to an oil storage tank 901 through a fixing plate 902, and a telescopic pipe 904 is fixedly connected to the bottom of the oil storage tank 901. The fourth sleeves 910 are connected to the telescopic pipe 904 through a connecting pipe 905. A movable disc 903 is slidably connected inside the oil storage tank 901. The oil storage tank 901 is filled with hydraulic oil. A push rod 906 is fixedly connected to the top of the movable disc 903. A connecting plate 907 is fixedly connected to the side wall of the L-shaped block 702, and a trapezoidal block 908 is fixedly connected to the bottom of the connecting plate 907. The trapezoidal block 908 includes two symmetrically arranged second inclined surfaces 909. When the product cannot be placed in the placement slot 13, the product will abut against the first inclined plate 703 and cannot move to the bottom of the L-shaped block 702. At this time, the trapezoidal block 908 cannot be fully reset, causing the top of the connecting plate 907 to abut against the second inclined surface 909 or the bottom of the trapezoidal block 908. At this time, the moving plate 903 can be pushed to move downward along the oil tank 901, thereby squeezing the hydraulic oil in the oil tank 901. The hydraulic oil can enter the fourth sleeve 910 through the telescopic pipe 904 and the connecting pipe 905. Under the action of hydraulic pressure, the fourth sleeve rod 911 can be pushed to move away from the fourth sleeve 910. The fourth spring 913 is stretched and can push the moving block 806 and the insertion rod 807 to move.

[0027] Please see Figure 6The launching mechanism includes a second groove 1001 formed on the top of the floating plate 12, and two second fixing blocks 1002 are fixedly connected to the top of the second groove 1001. A fifth sleeve rod 1003 is fixedly connected to the side wall of each second fixing block 1002, and a fifth sleeve tube 1004 is sleeved on the side wall of the fifth sleeve rod 1003. The other end of the fifth sleeve tube 1004 is fixedly connected to an inclined block 1006, and a fifth spring 1005 is sleeved on the side wall of each fifth sleeve tube 1004. A support block 1007 is fixedly connected to the side wall of the floating plate 12, and a rotating plate 1009 is rotatably connected to the side wall of the support block 1007 via a second rotating shaft 1008. A rubber rod 1010 is fixedly connected to the side wall of the moving plate 1009, and a first L-shaped frame 1011 is fixedly connected to the side wall of the connecting plate 907. A limit block 1012 is fixedly connected to the top of the first L-shaped frame 1011, and a second L-shaped frame 1013 is fixedly connected to the top of the first fixing block 708. A fixing cover 1014 is fixedly connected to the side wall of the second L-shaped frame 1013, and a sliding block 1016 is slidably connected inside the fixing cover 1014 via a sixth spring 1015. Multiple triangular blocks 1017 are fixedly connected to the bottom of the sliding block 1016, and a third inclined surface 1018 is provided on the side wall of the triangular block 1017. After the test is completed, the device is manually moved. Multiple first inclined plates 703 move towards the first fixed block 708 and detach from the product. Simultaneously, the connecting plate 907 drives the first L-shaped frame 1011 and the limiting block 1012 to move. When the first L-shaped frame 1011 abuts against the rotating plate 1009, it pushes the rotating plate 1009 to rotate along the second rotating shaft 1008, simultaneously driving the rubber rod 1010 to rotate. This causes the rubber rod 1010 to abut against the inclined block 1006 and be compressed and deformed. Furthermore, it allows the trapezoidal block 908 to pass over the pushing rod 906. When the limiting block 1012 abuts against the third inclined surface 1018, it pushes the triangular block 101... 7 and sliding block 1016 move upward, the sixth spring 1015 is compressed, and when the limiting block 1012 passes the triangular block 1017, the sliding block 1016 and triangular block 1017 can move downward and reset under the action of the sixth spring 1015, and the limiting block 1012 abuts against the side wall of the triangular block 1017. At this time, the first L-shaped frame 1011 and the connecting plate 907 can be limited. After the limiting mechanism is separated from the product, under the action of the rubber rod 1010, the inclined block 1006 can be pushed to move and the product can be pushed upward from the placement slot 13, which makes it easier and faster to take out the tested product.

[0028] Working principle: During use, the rotation of the cam handle 403, combined with the first mounting hole 302, causes the base 11 to rise and fall, thereby reducing the stroke of the floating plate 12 when the fixture is locked. This creates contact between the probe and the test fixture, ensuring the test results are qualified. The probe and the DBC base of the test fixture are opposite to each other. The probe is fixed with screws, leaving a blank area at the probe position and a fixing port for the DBC base via a snap-fit. This device allows the test fixture to be tested on any testing machine using the corresponding test line. Test data can be cross-validated. It is low-cost, lightweight, and flexible to move; compatible with testing machines and test fixtures, and adaptable to various DBC cross-validation testing machines; with no other variables, data verification is more reliable.

[0029] When the cam handle 403 rotates, the friction block 503 abuts against the side wall of the cam handle 403 under the action of the first return spring 603, thereby limiting the rotation speed of the cam handle 403, making it more stable and reliable, and ensuring the test effect and service life.

[0030] During testing, the product is placed in the placement slot 13. When the product comes into contact with the second inclined plate 704, it can push the L-shaped block 702 to move closer to the first fixed block 708. At the same time, the second return spring 707 is compressed. When the product passes the second inclined plate 704, the L-shaped block 702 and the first inclined plate 703 can move and reset under the action of the second return spring 707, so that the first inclined plate 703 comes into contact with the product, thereby pushing it down into the placement slot 13 and gradually moving to the bottom of the L-shaped block 702. This can flatten and limit the product, ensuring that it is completely in contact with the bottom of the placement slot 13, and is more stable and reliable, ensuring the accuracy of subsequent tests.

[0031] Furthermore, when the L-shaped block 702 moves, it can drive the trapezoidal block 908 to move via the connecting plate 907. Under the action of the second inclined surface 909, the trapezoidal block 908 can pass over the push rod 906. When the product cannot be placed in the placement slot 13, the product will abut against the first inclined plate 703 and cannot move to the bottom of the L-shaped block 702. At this time, the trapezoidal block 908 cannot be fully reset, causing the top of the connecting plate 907 to abut against the second inclined surface 909 or the bottom of the trapezoidal block 908. At this point, the moving disk 903 can be pushed downwards along the oil reservoir 901. The hydraulic oil in the reservoir 901 can be squeezed, and the hydraulic oil can enter the fourth sleeve 910 through the telescopic tube 904 and the connecting tube 905. Under the action of hydraulic pressure, the fourth sleeve rod 911 can be pushed to move away from the fourth sleeve 910. The fourth spring 913 is stretched and can push the moving block 806 and the insertion rod 807 to move. The third spring 805 is stretched, so that the insertion rod 807 is inserted into the slot 801 for limit, so that the cam handle 403 cannot be rotated upward, ensuring that the product can be placed in place before subsequent testing, and ensuring the accuracy of the test.

[0032] After the test is completed, the multiple first inclined plates 703 are manually moved towards the first fixed block 708 and detached from the product. Simultaneously, the connecting plate 907 drives the first L-shaped frame 1011 and the limiting block 1012 to move. When the first L-shaped frame 1011 abuts against the rotating plate 1009, it pushes the rotating plate 1009 to rotate along the second rotating shaft 1008. This also drives the rubber rod 1010 to rotate, causing it to abut against the inclined block 1006 and be compressed and deformed. Furthermore, it allows the trapezoidal block 908 to pass over the pushing rod 906. When the limiting block 1012 abuts against the third inclined surface 1018, it pushes the third inclined surface 1018 to rotate. When corner block 1017 and sliding block 1016 move upward, the sixth spring 1015 is compressed. When the limiting block 1012 passes the triangular block 1017, the sliding block 1016 and triangular block 1017 can move downward and reset under the action of the sixth spring 1015, and the limiting block 1012 abuts against the side wall of the triangular block 1017. At this time, the first L-shaped frame 1011 and the connecting plate 907 can be limited. After the limiting mechanism is separated from the product, under the action of the rubber rod 1010, the inclined block 1006 can be pushed to move and the product can be pushed upward from the placement slot 13, which makes it easier and faster to take out the tested product.

[0033] Finally, pushing the sliding block 1016 causes the triangular block 1017 to move upward and disengage from the limiting block 1012. At this time, the connecting plate 907 and the L-shaped block 702 can move and reset under the action of the second reset spring 707 so that subsequent testing can continue.

[0034] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0035] The present invention and its embodiments have been described above. This description is not restrictive, and the accompanying drawings are only one embodiment of the present invention; the actual structure is not limited thereto. In conclusion, if those skilled in the art are inspired by this description and design similar structures and embodiments without departing from the spirit of the invention, such designs should fall within the protection scope of the present invention.

Claims

1. A test fixture for a DBC automated testing machine, comprising a housing (1), characterized in that: The housing (1) is connected to a base (11) via a reset mechanism, and a floating plate (12) is connected to the top of the base (11) via a telescopic mechanism. A placement slot (13) is provided on the top of the floating plate (12), and side clamps (14) are provided on both sides of the housing (1). A pushing mechanism for pushing the base (11) is provided at the bottom of the housing (1).

2. The test fixture for a DBC automated testing machine according to claim 1, characterized in that: The reset mechanism includes side plates (201) fixedly connected to both sides of the base (11), and the side plates (201) are connected to the housing (1) by a first spring (202).

3. The test fixture for a DBC automated testing machine according to claim 1, characterized in that: The telescopic mechanism includes multiple first mounting holes (302) at the bottom of the floating plate (12) and multiple second mounting holes (303) at the top of the base (11). A second spring (301) is inserted into the first mounting hole (302) and the second mounting hole (303), and the two ends of the second spring (301) are fixed to the top of the first mounting hole (302) and the bottom of the second mounting hole (303) respectively.

4. The test fixture for a DBC automated testing machine according to claim 1, characterized in that: The pushing mechanism includes two locking blocks (401) fixedly connected to the bottom of the housing (1), and the locking blocks (401) are rotatably connected to a cam handle (403) via a first rotating shaft (402).

5. The test fixture for a DBC automated testing machine according to claim 4, characterized in that: The side wall of the locking block (401) is provided with a speed limiting mechanism for limiting the rotation of the cam handle (403), and the speed limiting mechanism includes a mounting groove (501) opened on the side wall of the locking block (401), and a mounting cover (502) is fixedly inserted in the mounting groove (501), and a friction block (503) is connected in the mounting cover (502) through a telescopic component.

6. The test fixture for a DBC automated testing machine according to claim 5, characterized in that: The telescopic assembly includes two first sleeve rods (602) fixedly connected to the side wall of the friction block (503), and each first sleeve rod (602) has a first sleeve (601) sleeved on its side wall. The other end of the first sleeve (601) is fixed to the side wall of the mounting cover (502), and each first sleeve (601) has a first return spring (603) sleeved on its side wall.

7. A test fixture for a DBC automated testing machine according to claim 5, characterized in that: The top of the floating plate (12) is provided with multiple limiting mechanisms, which are used to limit the product placed in the placement slot (13). Each limiting mechanism includes a first groove (701) opened on the top of the floating plate (12), and two first fixing blocks (708) are fixedly connected in the first groove (701). A second sleeve rod (705) is fixedly connected to the side wall of each first fixing block (708), and a second sleeve tube (706) is sleeved on the side wall of each second sleeve rod (705). The other end of (706) is fixedly connected to an L-shaped block (702), and the side wall of each second sleeve (706) is fitted with a second return spring (707). The top of the L-shaped block (702) is fixedly connected to a first inclined plate (703), and the top of the first inclined plate (703) is fixedly connected to a second inclined plate (704). The mounting cover (502) is provided with a limiting component for limiting the cam handle (403), and the top of the floating plate (12) is provided with a push-out mechanism for pushing out the tested product.

8. A test fixture for a DBC automated testing machine according to claim 7, characterized in that: The limiting component includes multiple slots (801) formed on the side wall of the cam handle (403), and two third sleeves (802) are fixedly connected to the inner wall of the mounting cover (502). A third sleeve rod (803) is inserted into each of the third sleeves (802), and a connecting block (804) is fixedly connected to the other end of the third sleeve rod (803). A moving block (806) is fixedly connected to the top of the connecting block (804), and a third spring (805) is sleeved on the side wall of each of the third sleeves (802). A plug rod (807) is fixedly connected to the side wall of the moving block (806), and a first inclined surface (808) is provided on the top of the plug rod (807). The movement of the moving block (806) is driven by a pushing mechanism.

9. A test fixture for a DBC automated testing machine according to claim 8, characterized in that: The pushing mechanism includes a plurality of fourth sleeves (910) fixedly connected to the inner wall of the mounting cover (502), and a fourth sleeve rod (911) is inserted into the fourth sleeve (910). A fixing ring (912) is fixedly sleeved on the side wall of the fourth sleeve rod (911), and a fourth spring (913) is sleeved on the side wall of the fourth sleeve (910). The side wall of the floating plate (12) is connected to an oil storage tank (901) through a fixing plate (902), and a telescopic tube (904) is fixedly connected to the bottom of the oil storage tank (901). The sleeve (910) is connected to the telescopic pipe (904) through the connecting pipe (905), and a movable disk (903) is slidably connected inside the oil tank (901). The oil tank (901) is filled with hydraulic oil. A push rod (906) is fixedly connected to the top of the movable disk (903), and a connecting plate (907) is fixedly connected to the side wall of the L-shaped block (702). A trapezoidal block (908) is fixedly connected to the bottom of the connecting plate (907), and the trapezoidal block (908) includes two symmetrically arranged second inclined surfaces (909).

10. A test fixture for a DBC automated testing machine according to claim 9, characterized in that: The launching mechanism includes a second groove (1001) formed on the top of the floating plate (12), and two second fixing blocks (1002) are fixedly connected to the top of the second groove (1001). A fifth sleeve rod (1003) is fixedly connected to the side wall of each second fixing block (1002), and a fifth sleeve tube (1004) is sleeved on the side wall of the fifth sleeve rod (1003). The other end of the fifth sleeve tube (1004) is fixedly connected to the inclined block (1006), and a fifth spring (1005) is sleeved on the side wall of each fifth sleeve tube (1004). A support block (1007) is fixedly connected to the side wall of the floating plate (12), and a rotating plate (1005) is rotatably connected to the side wall of the support block (1007) through a second rotating shaft (1008). 09), the side wall of the rotating plate (1009) is fixedly connected to a rubber rod (1010), and the side wall of the connecting plate (907) is fixedly connected to a first L-shaped frame (1011). The top of the first L-shaped frame (1011) is fixedly connected to a limit block (1012), and the top of the first fixing block (708) is fixedly connected to a second L-shaped frame (1013). The side wall of the second L-shaped frame (1013) is fixedly connected to a fixing cover (1014), and a sliding block (1016) is slidably connected inside the fixing cover (1014) by a sixth spring (1015). The bottom of the sliding block (1016) is fixedly connected to multiple triangular blocks (1017), and the side wall of the triangular block (1017) is provided with a third inclined surface (1018).

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