Power device DBC high-temperature test tool

Abstract

The utility model belongs to the technical field of testing tools, and particularly relates to a power device DBC high-temperature testing tool which comprises a base. Through the arrangement of the positioning mechanism, the high-temperature test of the DBC board can be conveniently and continuously carried out, the detection efficiency is improved, the motor is started to drive the test base and rotate the test frame on which the DBC board is placed to the position below the test board, and at the moment, the top end of the sleeve is inserted into the clamping groove to carry out movement limiting on the test base; a first air cylinder is started to drive a heating plate to move upwards to penetrate through a testing hole and be inserted into a testing frame, a heating block is started to conduct heating and testing, after testing is completed, the first air cylinder is started to drive the heating plate to descend through a heat insulation plate, movement limiting of a testing seat disappears, but movement limiting is still conducted on a pressing block, and a motor drives the testing seat to rotate; the new test jig is moved to the position below the test board, the tested test jig is moved to the position above the corresponding cooling pipe, and cold air flows into the test jig and cools the power device DBC board.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of test tool, specifically a kind of power device DBC high temperature test tool. BACKGROUND

[0002] After power device completes DBC welding process, it will be carried out open and off test under chip heating state before encapsulation glue pouring process, and the DBC with problem is screened out, so as to improve the yield of IGBT module after packaging.

[0003] The current power device DBC high temperature test tool is usually composed of a base, a first air cylinder fixedly connected to the top of the base, a heating block fixedly connected to the output end of the first air cylinder, a second air cylinder fixedly connected to the top of the base, a top plate fixedly connected to the output end of the second air cylinder, a tester fixedly connected to the bottom of the top plate, and a placing rack fixedly connected to the top of the base through a connecting rod, etc. That is, the power device is placed in the placing rack, the first air cylinder is started to lift the heating block to contact the power device DBC board and to contact the tester, the heating block is started, and the test is carried out through the tester.

[0004] However, the temperature of the tested power device DBC board and the placing rack is relatively high, and the power device DBC board is easily touched and scalded when taken out, and needs to be cooled down before being taken out and replaced for DBC board, which reduces the test efficiency. Therefore, a power device DBC high temperature test tool is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0005] In order to make up for the shortcomings of the prior art, solve the problem that the temperature of the tested power device DBC board and the placing rack is relatively high, and the power device DBC board is easily touched and scalded when taken out, and needs to be cooled down before being taken out and replaced for DBC board, which reduces the test efficiency, a power device DBC high temperature test tool is proposed.

[0006] The utility model solves the technical scheme that the utility model discloses a kind of power device DBC high temperature test tool, including base;The top of the base is fixedly connected with motor, and the output end of the motor is fixedly connected with test seat, and the top of the base is fixedly connected with cooling pipe, and the top of the test seat is equipped with test hole, and the top of the test seat is installed with test rack, and the bottom of the test seat is equipped with clamping slot, and the top of the base is fixedly connected with first air cylinder, and the output end of the first air cylinder is fixedly connected with heating plate by heat insulation plate, and the top of the base is fixedly connected with test plate by support rod, and the bottom of the test plate is installed with tester;

[0007] The base is provided with a positioning mechanism, the positioning mechanism comprises a limiting plate fixedly connected to the top of the base, a limiting slot is formed in the top of the limiting plate, a sleeve is slidably connected in the limiting slot, a threaded hole is formed in the bottom of the sleeve, a lead screw is threadedly connected to the threaded hole, the bottom end of the lead screw extends out of the threaded hole and is rotatably connected to the inner bottom wall of the limiting slot, a gear is fixedly connected to the outer wall of the lead screw in the limiting slot, a through slot is formed in one side of the limiting plate and communicates with the limiting slot, a rack is slidably connected in the through slot, the rack is meshingly connected with the gear, one end of the rack extends out of the through slot and is fixedly connected with a pressing block, a reset slot is formed in the inner side wall of the limiting slot, a reset block is slidably connected in the reset slot, one end of the reset block is elastically connected to the inner side wall of the reset slot through a first spring, the other end of the reset block extends out of the reset slot and is fixedly connected with the rack, through the setting of the positioning mechanism, the high temperature test of the DBC plate can be continuously carried out, the test and cooling are synchronized, the operation steps are simplified, and the detection efficiency is improved.

[0008] Preferably, a support block is slidably connected in the test frame, and a support groove is formed in the top of the support block, through the setting of the support block and the support groove, the DBC plate can be conveniently moved and limited, and displacement of the DBC plate during the test is avoided.

[0009] Preferably, a fixed block is slidably connected in the test frame, a through slot is formed in one side of the test frame, a connecting block is fixedly connected to one side of the fixed block close to the through slot, the other end of the connecting block extends out of the through slot, a push rod is fixedly connected to the top of the fixed block, the top end of the push rod penetrates through the support block, through the setting of the fixed block, the push rod and the connecting block, the DBC plate can be conveniently taken out after the test and cooling are completed.

[0010] Preferably, a knob is fixedly connected to one end of the connecting block in the external environment, and anti-skid lines are formed on the outer wall of the knob, through the setting of the knob, the connecting block can be moved by driving the knob, and the through slot can be shielded.

[0011] Preferably, a sealing groove is formed in the top of the test frame, a sealing ring is slidably connected in the sealing groove, and the bottom end of the sealing ring is elastically connected to the inner bottom wall of the sealing groove through a second spring, through the setting of the sealing ring and the second spring, the sealing can be assisted and strengthened.

[0012] Preferably, a support rod is fixedly connected to the top of the base, and the top end of the support rod abuts against the bottom of the test seat, through the setting of the support rod, the test seat can be assisted and supported.

[0013] Preferably, an installation hole is formed in the top of the base, and anti-skid protrusions are formed on the bottom of the base, through the setting of the installation hole, the base can be fixed.

[0014] The utility model discloses a beneficial effect:

[0015] 1, the utility model provides a kind of power device DBC high temperature test tool, by the setting of positioning mechanism, DBC board can be conveniently continuously high temperature tested, improve detection efficiency, start motor drives test seat and is rotated to test board below with the test frame that has placed DBC board, when the top end of casing is inserted into card slot and moves the limit of test seat, start first cylinder drives heating plate and inserts into test frame after passing through test hole, start heating block and carry out test after heating, after testing, start first cylinder and drive heating plate to descend by heat insulating plate, the movement limit of test seat disappears, but still moves the limit of pressing block, motor drives test seat rotation, move new test frame to test board below, and test after test frame moves to the top of corresponding cooling pipe, cold air rushes into test frame and carries out cooling to power device DBC board.

[0016] 2, the utility model provides a kind of power device DBC high temperature test tool, by the setting of support block and support groove, DBC board can be conveniently moved and limited, avoid DBC board displacement in testing process, by the setting of fixed block, push rod and connecting block, after testing and cooling are completed, DBC board can be conveniently assisted to be taken out, by the setting of driving block, connecting block can be conveniently moved by driving block, and through slot is shielded. DRAWINGS

[0017] The drawings described herein are used to provide further understanding of the utility model, and constitute a part of the present application, and the illustrative embodiment of the utility model and its explanation are used to explain the utility model, and do not constitute undue limitation to the utility model. In the drawings:

[0018] Figure 1 It is the perspective drawing of the utility model;

[0019] Figure 2 It is the sectional structure drawing of base and test seat in the utility model;

[0020] Figure 3 It is the perspective drawing of limit plate in the utility model;

[0021] Figure 4 It is the sectional structure drawing of limit plate in the utility model;

[0022] Figure 5 It is the perspective drawing of test frame in the utility model;

[0023] Figure 6 It is the sectional structure drawing of test frame in the utility model.

[0024] Legend:

[0025] 1, base; 2, test seat; 3, cooling pipe; 4, test hole; 5, test frame; 6, first cylinder; 7, heating plate; 8, test plate; 9, positioning mechanism; 91, limit plate; 92, sleeve; 93, screw; 94, gear; 95, rack; 96, pressing block; 97, reset groove; 98, first spring; 10, support block; 11, fixed block; 12, toggle block; 13, sealing ring; 14, second spring; 15, support rod. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be described clearly and completely below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0027] Specific embodiments are given below.

[0028] Please refer to Figures 1-6 The utility model provides a kind of power device DBC high temperature test tool, including base 1;The top of base 1 is fixedly connected with motor, and the output of motor is fixedly connected with test seat 2, and the top of base 1 is fixedly connected with cooling pipe 3, and the top of test seat 2 is provided with test hole 4, and the top of test seat 2 is installed with test frame 5, and the bottom of test seat 2 is provided with clamping groove, and the top of base 1 is fixedly connected with first cylinder 6, and the output of first cylinder 6 is fixedly connected with heating plate 7 by heat insulation plate, and the top of base 1 is fixedly connected with test plate 8 by support rod 15, and the bottom of test plate 8 is installed with tester;

[0029] The base 1 is provided with a positioning mechanism 9, the positioning mechanism 9 includes a limiting plate 91 fixedly connected to the top of the base 1, a limiting groove is formed in the top of the limiting plate 91, a sleeve 92 is slidably connected in the limiting groove, a threaded hole is formed in the bottom of the sleeve 92, a lead screw 93 is threadedly connected to the threaded hole, the bottom end of the lead screw 93 extends out of the threaded hole and is rotatably connected to the inner bottom wall of the limiting groove, a gear 94 is fixedly connected to the outer wall of the lead screw 93 in the limiting groove, a through groove is formed in one side of the limiting plate 91 and communicates with the limiting groove, a rack 95 is slidably connected in the through groove, the rack 95 is meshingly connected with the gear 94, one end of the rack 95 extends out of the through groove and is fixedly connected with a pressing block 96, a reset groove 97 is formed in the inner side wall of the limiting groove, a reset block is slidably connected in the reset groove 97, one end of the reset block is elastically connected to the inner side wall of the reset groove 97 through a first spring 98, the other end of the reset block extends out of the reset groove 97 and is fixedly connected with the rack 95; during operation, the cooling pipe 3 is connected with an external refrigerating device through a hose to introduce cold air, the positioning mechanism 9 is arranged to continuously perform high temperature test on the DBC board, so that the test and cooling are performed synchronously, the operation steps are simplified, and the detection efficiency is improved, that is, the power device DBC board to be tested is placed in the test frame 5, the motor is started to drive the test seat 2 and rotate the test frame 5 on which the power device DBC board is placed to below the test plate 8 and the tester, at this time, the top end of the sleeve 92 is inserted into the clamping groove to move and limit the test seat 2, the first air cylinder 6 is started to drive the heating plate 7 to move upward and pass through the test hole 4 and be inserted into the test frame 5, the heating plate 7 lifts the power device DBC board to contact the tester, the heating block is started to heat and test, in this process, the heat insulation block extrudes the pressing block 96, the pressing block drives the rack 95 to move, the rack 95 applies pressure to the spring through the reset block, the rack 95 drives the gear 94 to rotate, the gear 94 drives the lead screw 93 to rotate, the lead screw 93 rotates to drive the sleeve 92 to descend, the top end of the sleeve 92 moves out of the clamping groove to release the limiting of the test seat 2, but at the same time, the heating plate 7 moves to limit the test seat 2, when the test is completed, the first air cylinder 6 is started to drive the heating plate 7 to descend through the heat insulation plate, in this process, the heat insulation plate always applies pressure to the pressing block 96 until the heat insulation plate and the heating plate 7 are reset, at the same time, the heating plate 7 moves out of the test hole 4, the movement limiting of the test seat 2 disappears, but the movement limiting of the pressing block 96 still exists, the motor drives the test seat 2 to rotate, moves the new test frame 5 to below the test plate 8, and moves the tested test frame 5 to above the cooling pipe 3, cold air rushes into the test frame 5 to cool and heat the power device DBC board, the above steps are repeated to continuously perform batch high temperature test on the power device DBC board, and the test efficiency is improved.

[0030] Further, as Figure 5 and Figure 6As shown, the support block 10 is slidably connected in the test rack 5, and a support groove is formed in the top of the support block 10. In operation, the support block 10 and the support groove can facilitate the movement and positioning of the DBC board, thereby avoiding displacement of the DBC board during testing.

[0031] Further, as shown in Figure 5 and Figure 6 , the test rack 5 is slidably connected with a fixed block 11, one side of the test rack 5 is provided with a through slot, the side of the fixed block 11 close to the through slot is fixedly connected with a connecting block, the other end of the connecting block extends out of the through slot, the top of the fixed block 11 is fixedly connected with a push rod, and the top end of the push rod penetrates through the support block 10. In operation, the fixed block 11, the push rod and the connecting block can facilitate the removal of the DBC board after testing and cooling.

[0032] Further, as shown in Figure 5 and Figure 6 , one end of the connecting block is fixedly connected with a knob 12, and the outer wall of the knob 12 is provided with anti-skid lines. In operation, the knob 12 can facilitate the movement of the connecting block and the blocking of the through slot.

[0033] Further, as shown in Figure 5 and Figure 6 , a sealing groove is formed in the top of the test rack 5, a sealing ring 13 is slidably connected in the sealing groove, and the bottom end of the sealing ring 13 is elastically connected with the inner bottom wall of the sealing groove through a second spring 14. In operation, the sealing ring 13 and the second spring 14 can facilitate the auxiliary sealing.

[0034] Further, as shown in Figure 1 and Figure 2 , the top of the base 1 is fixedly connected with a support rod 15, and the top end of the support rod 15 abuts against the bottom of the test seat 2. In operation, the support rod 15 can assist in supporting the test seat 2.

[0035] Further, as shown in Figure 1 and Figure 2 , the top of the base 1 is provided with a mounting hole, and the bottom of the base 1 is provided with anti-skid protrusions. In operation, the mounting hole can facilitate the fixation of the base 1.

[0036] Working principle: the power device DBC board to be tested is placed in the test frame 5, and the motor is started to drive the test seat 2 and rotate the test frame 5 placed with the power device DBC board to the test plate 8 and the tester below, at this time the top end of the sleeve 92 is inserted into the clamping groove to move and limit the test seat 2, the first cylinder 6 is started to drive the heating plate 7 to move upwards and pass through the test hole 4 and insert into the test frame 5, the heating plate 7 lifts the power device DBC board and contacts the tester, the heating block can be started to heat and test, in this process, the heat insulation block extrudes the pressing block 96, so that the extrusion block drives the rack 95 to move, the rack 95 applies pressure to the spring through the return block, the rack 95 drives the gear 94 to rotate, the gear 94 drives the lead screw 93 to rotate, the lead screw 93 rotates to drive the sleeve 92 to descend, the top end of the sleeve 92 moves out of the clamping groove, and the limiting of the test seat 2 is released, but at the same time the heating plate 7 moves and limits the test seat 2, and when the test is completed, the first cylinder 6 is started and the heating plate 7 is driven to descend by the heat insulation plate, in this process, the heat insulation plate always applies pressure to the pressing block 96 until the heat insulation plate and the heating plate 7 are reset, and at the same time the heating plate 7 moves out of the test hole 4, the movement limiting of the test seat 2 disappears, but the pressing block 96 is still moved and limited, the motor drives the test seat 2 to rotate, moves the new test frame 5 to the test plate 8 below, and moves the tested test frame 5 to the upper side of the corresponding cooling pipe 3, cold air rushes into the test frame 5 and cools the power device DBC board, the above steps are repeated to continuously test the batch of power device DBC boards, and the test efficiency is improved.

[0037] The basic principle, main features and advantages of the utility model are shown and described above. It should be understood by those skilled in the art that the utility model is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed.

Claims

1. A power device DBC high temperature test fixture, characterized in that: Including the base (1), the top of the base (1) is fixedly connected with a motor, the output end of the motor is fixedly connected with a test seat (2), the top of the base (1) is fixedly connected with a cooling pipe (3), the top of the test seat (2) is provided with a test hole (4), the top of the test seat (2) is provided with a test frame (5), the bottom of the test seat (2) is provided with a clamping groove, the top of the base (1) is fixedly connected with a first air cylinder (6), the output end of the first air cylinder (6) is fixedly connected with a heating plate (7) through a heat insulation plate, the top of the base (1) is fixedly connected with a test plate (8) through a supporting rod (15), and the bottom of the test plate (8) is provided with a tester; The base (1) is provided with a positioning mechanism (9), the positioning mechanism (9) comprises a limiting plate (91) fixedly connected to the top of the base (1), a limiting slot is formed in the top of the limiting plate (91), a sleeve (92) is slidably connected in the limiting slot, a threaded hole is formed in the bottom of the sleeve (92), a lead screw (93) is threadedly connected with the threaded hole, the bottom end of the lead screw (93) extends out of the threaded hole and is rotatably connected with the inner bottom wall of the limiting slot, a gear (94) is fixedly connected to the outer wall of the lead screw (93) in the limiting slot, a through slot is formed in one side of the limiting plate (91) and communicates with the limiting slot, a rack (95) is slidably connected in the through slot, the rack (95) is meshingly connected with the gear (94), one end of the rack (95) extends out of the through slot and is fixedly connected with a pressing block (96), a reset slot (97) is formed in the inner side wall of the limiting slot, a reset block is slidably connected in the reset slot (97), one end of the reset block is elastically connected with the inner side wall of the reset slot (97) through a first spring (98), and the other end of the reset block extends out of the reset slot (97) and is fixedly connected with the rack (95).

2. The power device DBC high temperature test tooling of claim 1, wherein: The test frame (5) is slidably connected with a supporting block (10), and the top of the supporting block (10) is provided with a supporting groove.

3. The power device DBC high temperature test fixture of claim 2, wherein: The test frame (5) is slidably connected with a fixing block (11), one side of the test frame (5) is provided with a through slot, one side of the fixing block (11) close to the through slot is fixedly connected with a connecting block, the other end of the connecting block extends out of the through slot, the top of the fixing block (11) is fixedly connected with a push rod, and the top end of the push rod penetrates the supporting block (10).

4. The power device DBC high temperature test tooling of claim 3, wherein: One end of the connecting block located outside is fixedly connected with a knob (12), and the outer wall of the knob (12) is provided with anti-skid lines.

5. The power device DBC high temperature test fixture of claim 4, wherein: The top of the test frame (5) is provided with a sealing groove, the sealing groove is slidably connected with a sealing ring (13), and the bottom end of the sealing ring (13) is elastically connected with the inner bottom wall of the sealing groove through a second spring (14).

6. The power device DBC high temperature test fixture of claim 5, wherein: The top of the base (1) is fixedly connected with a supporting rod (15), and the top end of the supporting rod (15) abuts against the bottom of the test seat (2).

7. The power device DBC high temperature test fixture of claim 6, wherein: The top of the base (1) is provided with a mounting hole, and the bottom of the base (1) is provided with anti-skid protrusions.

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