An automatic test bench for automotive electronics aging

Abstract

The present invention discloses an automatic test bench for automotive electronic aging, which relates to the field of automotive electronic testing technology. In order to solve the problem of efficiency, the bench specifically comprises a column and a turntable rotatably connected to the outer wall of the column. The top of the turntable is provided with three groups of fixed clamping mechanisms in a circular array, and one side of the top of the column is connected to a heating and temperature control mechanism via an electric slider, and a plug is provided on the side of the column located at the test station. The heating and temperature control mechanism comprises an outer cover and a gas-type heating component and a timing component respectively provided on the top of the outer cover. The present invention provides a rotatable turntable and cooperates with the provision of multiple groups of fixed clamping mechanisms. The workstation can be switched by rotating the turntable, so that the loading, testing, and unloading steps can be performed synchronously, thereby greatly increasing the test efficiency for batch testing.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile electronic testing, in particular to an automatic automobile electronic aging test bench. Background Art

[0002] Automotive electronic components are an important part of automotive electronic control. After being assembled into electronic modules, they need to undergo aging tests. The aging test is to connect the electronic components and then test whether they are working properly at different temperatures.

[0003] After searching, the Chinese patent publication number CN117706257B discloses an automatic aging test device for new energy vehicle electronic devices, including a cabinet and a test cavity arranged in the cabinet, the cabinet is equipped with an atomizing component and an airflow heating component, and the atomizing component and the airflow heating component are both connected to the test cavity, the front and rear ends of the test cavity are provided with lateral rotating belts along the direction of its four side walls, a middle rotating belt is provided between the two lateral rotating belts, an upper clamping rod and a lower clamping rod that can be raised and lowered along a circular arc trajectory with the upper clamping rod as the center are equidistantly installed on the inner side surface of the lateral rotating belt, the upper clamping rod and the lower clamping rod are respectively clamped on the two side surfaces of the middle rotating belt.

[0004] The above patent has the following deficiencies: although it sets up multiple stations for aging testing, it needs to carry out the loading-testing-unloading process in sequence, and cannot form an assembly line test. When conducting batch testing, the efficiency is low.

[0005] To this end, the present invention proposes an automatic test bench for automobile electronic aging. Summary of the Invention

[0006] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an automatic test bench for automobile electronic aging.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions:

[0008] An automatic test bench for automobile electronic aging includes a column and a turntable rotatably connected to the outer wall of the column.

[0009] Three sets of circular array fixed clamping mechanisms are provided on the top of the turntable, and one side of the top of the column is connected to the heating and temperature control mechanism through an electric slider, and a plug is provided on the side of the column located at the test station;

[0010] The heating and temperature control mechanism includes an outer cover and a gas heating component and a timing component respectively arranged on the top of the outer cover;

[0011] The gas heating assembly includes an air pump and a heating wire. An air inlet is provided on the top of the outer cover. The air pump is fixed to the end of the air inlet, and the air outlet of the air pump is located on one side of the air inlet. The heating wire is fixedly installed on the inner wall of the air inlet.

[0012] The fixed clamping mechanism consists of two symmetrically arranged clamping components and a socket card block fixed on the top of the turntable.

[0013] Preferably: the timing assembly includes a shell and a gantry, the shell is connected to the inner side of the gantry through a telescopic transmission, the inner wall of the shell is slidably connected to piston 1, the bottom outer wall of piston 1 is fixed with resistive electrode 2, the bottom of the shell is open, and the bottom inner wall of the shell is fixed with resistive electrode 1, the top outer wall of piston 1 is buckled with spring 1, and the other end of spring 1 is buckled to the inner wall of the shell.

[0014] Furthermore, the resistive electrode 1 and the resistive electrode 2 cooperate with each other, and the resistive electrode 1 and the resistive electrode 2 are connected in series to the circuit of the heating wire.

[0015] On the basis of the above-mentioned solution: the inner wall of the shell is slidably connected with an arc head clamping rod through spring 2, and the arc head clamping rod is in contact and limited cooperation with piston 1.

[0016] A better solution among the above solutions is: the clamping assembly includes a cavity plate fixed to the outer wall of the turntable top and a piston 2 evenly slidably connected to the side wall of the cavity plate, a clamp for clamping electronic components is fixed to the side of the piston 2, and the bottom of the cavity plate is connected and communicated with a connecting pipe.

[0017] As a further solution of the present invention: a connecting ring is fixed to the outer wall of the bottom of the turntable, a concave wheel is fixed to the outer wall of the column located on the inner wall of the connecting ring, and the concave part of the concave wheel is located at the loading station and the unloading station.

[0018] At the same time, the inner wall of the connecting ring is slidably connected to a limit touch rod that contacts and limits the outer wall of the cam wheel. A sliding block is fixed to the other end of the limit touch rod. The sliding block is buckled with a spring three on the opposite side of the connecting ring. The other end of the sliding block is rotatably connected to a connecting rod. The other end of the connecting rod is rotatably connected to a piston three that slides and fits in the inner wall of the connecting tube.

[0019] As a preferred embodiment of the present invention, a motor is fixed to the side wall of the column by bolts, the output shaft of the motor is connected to a gear by a key, and the gear is engaged with the outer wall of the connecting ring.

[0020] At the same time, the plug is slidably connected to the side wall of the column through a guide rod, and the plug is driven by a linkage assembly.

[0021] As a more optimal solution of the present invention: the linkage assembly includes a limiting groove and a limiting column that contact and cooperate with each other, and the protrusions of the limiting groove are respectively directed toward the three groups of fixed clamping mechanisms.

[0022] The beneficial effects of the present invention are:

[0023] 1. The present invention provides a rotatable turntable and cooperates with the arrangement of multiple sets of fixed clamping mechanisms. The rotation of the turntable can be used to switch workstations, so that the loading, testing, and unloading steps can be carried out synchronously, thereby greatly increasing the testing efficiency during batch testing.

[0024] 2. The present invention, by setting a timing component, utilizing ingenious circuit connection and Joule's law, can use resistive electrode 1 and resistive electrode 2 to perform timing control of the heating wire, and can achieve inverse proportional control of the heating power and heating time of the heating wire, thereby achieving the function of long low-temperature test time and short high-temperature test time.

[0025] 3. The present invention, by configuring the clamping assembly to be composed of a cavity plate and a plurality of clamps, and combining it with a pneumatic drive form, enables the plurality of clamps to fit well to the outer wall of the electronic component, and the clamping force of each clamp is equal.

[0026] 4. The present invention increases the test stability by clamping the electronic components, and by setting the clamping driving force, the clamping and unclamping can be matched with the work position of the electronic components, without setting a power source or corresponding control logic.

[0027] 5. The present invention, by setting up a linkage component and utilizing the mutual limitation of the limiting groove and the limiting column, can make the connection and separation of the plug and the integrated wiring harness fully automatic without the need for a power source and a control logic algorithm. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the overall structure of an automatic test bench for automotive electronics aging proposed by the present invention;

[0029] Figure 2 This is a schematic diagram of the heating and temperature control mechanism structure of an automotive electronic aging automatic test bench proposed by the present invention;

[0030] Figure 3 This is a schematic cross-sectional view of the heating and temperature control mechanism of an automatic test bench for automotive electronics aging proposed by the present invention;

[0031] Figure 4 This is a schematic cross-sectional view of the timing component of an automatic test bench for automotive electronics aging proposed by the present invention;

[0032] Figure 5This is a structural schematic diagram of a fixed clamping mechanism of an automatic test bench for automotive electronics aging proposed by the present invention;

[0033] Figure 6 This is a schematic cross-sectional view of the clamping assembly of an automatic test bench for automotive electronics aging proposed by the present invention;

[0034] Figure 7 This is a schematic diagram of the bottom-up structure of an automatic test bench for automotive electronics aging proposed by the present invention;

[0035] Figure 8 This is a schematic diagram of the linkage component structure of an automotive electronics aging automatic test bench proposed by the present invention.

[0036] In the figure: 1. column; 2. turntable; 3. fixed clamping mechanism; 4. heating temperature control mechanism; 5. outer cover; 6. gas heating assembly; 7. timing assembly; 8. resistive electrode 1; 9. resistive electrode 2; 10. piston 1; 11. shell; 12. spring 1; 13. gantry; 14. telescoping device; 15. air pump; 16. heating wire; 17. air inlet; 18. arc head clamping rod; 19. spring 2; 20. clamping assembly; 21. socket block; 22. plug; 23. linkage assembly; 24. cavity plate; 25. piston 2; 26. chuck; 27. connecting pipe; 28. piston 3; 29. ​​connecting rod; 30. sliding block; 31. spring 3; 32. limit contact rod; 33. gear; 34. motor; 35. cam; 36. limit groove; 37. connecting ring; 38. limit column; 39. guide rod. DETAILED DESCRIPTION

[0037] The technical solution of the present invention will be further described in detail below in conjunction with specific implementation methods.

[0038] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0039] Example 1: An automatic test bench for automotive electronic aging, such as Figures 1-8 As shown, it includes a column 1 and a turntable 2 rotatably connected to the outer wall of the column 1, three groups of fixed clamping mechanisms 3 in a circular array are provided on the top of the turntable 2, and one side of the top of the column 1 is connected to the heating temperature control mechanism 4 through an electric slider transmission, and a plug 22 is provided on the side of the column 1 located at the test station.

[0040] The heating and temperature control mechanism 4 includes an outer cover 5 and a gas heating component 6 and a timing component 7 respectively arranged on the top of the outer cover 5.

[0041] The gas heating component 6 includes an air pump 15 and a heating wire 16. An air inlet 17 is provided at the top of the outer cover 5. The air pump 15 is fixed to the end of the air inlet 17, and the air outlet of the air pump 15 is located on one side of the air inlet 17. The heating wire 16 is fixedly installed on the inner wall of the air inlet 17.

[0042] The fixed clamping mechanism 3 is composed of two symmetrically arranged clamping components 20 and a socket block 21 fixed to the top of the turntable 2 .

[0043] When the device is in use, it can be located at the loading station to place the assembled electronic components between the two clamping assemblies 20, and then the integrated wiring harness socket of the electronic component is limited by the socket block 21, and then the turntable 2 rotates, the clamping assembly 20 clamps the electronic component, and then rotates to the testing station, the plug 22 is inserted into the socket of the integrated wiring harness, and the other end of the plug 22 is connected to the test computer, and at the same time the outer cover 5 descends to cover the electronic component, the air pump 15 starts to blow air into the outer cover 5, the heating wire 16 heats the air, thereby increasing the working temperature of the electronic component, and then the computer is used to test whether the electronic component can work normally. After the test is completed, the turntable 2 continues to rotate to the unloading station for unloading.

[0044] This device, by setting up a rotatable turntable 2 and coordinating the setting of multiple groups of fixed clamping mechanisms 3, can switch workstations by rotating the turntable 2, so that the loading, testing, and unloading steps can be carried out synchronously, thereby greatly increasing the testing efficiency for batch testing.

[0045] During the test, the greater the thermal power of the heating wire 16, the higher the temperature of the inner cavity of the outer cover 5. The higher the temperature, the shorter the test time needs to be to prevent high temperature damage to the electronic components caused by the test. Therefore, in order to solve the time control problem; Figure 3 、 4 As shown, the timing assembly 7 includes a shell 11 and a gantry 13. The shell 11 is connected to the inner side of the gantry 13 through a telescopic device 14. The inner wall of the shell 11 is slidably connected to a piston 10. The bottom outer wall of the piston 10 is fixed with a resistive electrode 2 9. The bottom of the shell 11 is open, and the bottom inner wall of the shell 11 is fixed with a resistive electrode 8. The top outer wall of the piston 10 is buckled with a spring 12, and the other end of the spring 12 is buckled with the inner wall of the shell 11.

[0046] The resistive electrode 1 8 and the resistive electrode 2 9 cooperate with each other, and the resistive electrode 1 8 and the resistive electrode 2 9 are connected in series to the circuit of the heating wire 16 .

[0047] When testing, the retractor 14 will drive the shell 11 to descend, so that the bottom opening of the shell 11 is blocked by the outer cover 5. Then, when the heating wire 16 is started, the resistive electrode 2 9 and the resistive electrode 1 8 will also be energized, and the resistive electrode 1 8 and the resistive electrode 2 9 will also generate Joule heat, thereby heating the air in the inner cavity at the bottom of the shell 11, and the gas expansion generates a thrust on the piston 10. When the thrust is greater than the movement resistance of the piston 10, the piston 10 will move upward, thereby separating the resistive electrode 1 8 from the resistive electrode 2 9, and the circuit of the heating wire 16 is disconnected. After the test is completed, the shell 11 is driven to rise by the retractor 14, the bottom opening of the shell 11 will dissipate heat, and the piston 10 is reset.

[0048] This device, by setting up a timing component 7, uses clever circuit connections and Joule's law, so that the resistive electrode 1 8 and the resistive electrode 2 9 can be used to perform timing control of the heating wire 16, and can achieve inverse proportional control of the heating power and heating time of the heating wire 16, thereby achieving the function of long low-temperature test time and short high-temperature test time.

[0049] The inner wall of the shell 11 is slidably connected to an arc head clamping rod 18 through a spring 2 19, and the arc head clamping rod 18 is in contact with the piston 10 and limited. The arc head clamping rod 18 can generate resistance to the piston 10. When the thrust of the expanding gas on the piston 10 is greater than the resistance of the arc head clamping rod 18 on the piston 10, the piston 10 will move instantly and will not return to its original position until the heat is dissipated.

[0050] To solve automation problems; such as Figure 5-7 As shown, the clamping assembly 20 includes a cavity plate 24 fixed to the top outer wall of the turntable 2 and a piston 25 evenly slidably connected to the side wall of the cavity plate 24. A clamp 26 for clamping electronic components is fixed to the side of the piston 25, and the bottom of the cavity plate 24 is connected and communicated with a connecting pipe 27.

[0051] When the air pressure in the connecting pipe 27 increases, it transmits the air pressure to the inner cavity of the cavity plate 24 , thereby causing the second piston 25 to move outward and be clamped by the multiple clamps 26 .

[0052] This device, by configuring the clamping assembly 20 to consist of a cavity plate 24 and a plurality of clamps 26 and combining it with a pneumatic drive form, enables the plurality of clamps 26 to fit well against the outer wall of the electronic component, and the clamping force of each clamp 26 is equal.

[0053] A connecting ring 37 is fixed to the outer wall of the bottom of the turntable 2, and a concave wheel 35 is fixed to the outer wall of the column 1 located on the inner wall of the connecting ring 37, and the concave part of the concave wheel 35 is located at the loading station and the unloading station. The figure takes one concave as an example, and the inner wall of the connecting ring 37 is slidably connected to a limit touch rod 32 that contacts and limits the outer wall of the concave wheel 35. A sliding block 30 is fixed to the other end of the limit touch rod 32. The sliding block 30 is buckled with a spring three 31 on the opposite side of the connecting ring 37. The other end of the sliding block 30 is rotatably connected to a connecting rod 29, and the other end of the connecting rod 29 is rotatably connected to a piston three 28 that slides and fits with the inner wall of the connecting tube 27.

[0054] When the turntable 2 rotates, it will drive the limit touch rod 32 to rotate. When the limit touch rod 32 rotates to the loading or unloading position, the sliding block 30 will be pulled inward by the spring three 31, thereby pulling the piston three 28 in the connecting tube 27 outward through the connecting rod 29, and the air pressure in the connecting tube 27 is reduced, releasing the clamping. When the limit touch rod 32 rotates to the non-loading and unloading position, the limit touch rod 32 will be limited by the cam 35 and move outward, thereby squeezing the piston three 28 into the inside of the connecting tube 27 through the connecting rod 29, and the air pressure in the connecting tube 27 is increased, thereby clamping.

[0055] This device increases the test stability by clamping the electronic components, and by setting the clamping driving force, it can make the clamping and unclamping match the position of the electronic components, without setting a power source or corresponding control logic.

[0056] The side wall of the column 1 is fixed with a motor 34 by bolts. The output shaft of the motor 34 is connected to the gear 33 by a key. The gear 33 is engaged with the outer wall of the connecting ring 37.

[0057] When this embodiment is in use, the assembled electronic components can be placed between the two clamping assemblies 20 at the loading station, and then the integrated wiring harness socket of the electronic components is limited by the socket block 21. Then the turntable 2 rotates, the clamping assembly 20 clamps the electronic components, and then rotates to the testing station, the plug 22 is inserted into the socket of the integrated wiring harness, and the other end of the plug 22 is connected to the test computer. At the same time, the outer cover 5 descends to cover the electronic components, the air pump 15 starts to blow control air into the outer cover 5, the heating wire 16 heats the air, thereby increasing the working temperature of the electronic components, and then the computer is used to test whether the electronic components can work normally. After the test is completed, the turntable 2 continues to rotate to the unloading station for unloading. Specifically: when testing, the telescopic device 14 will drive the shell 11 to descend, so that the bottom opening of the shell 11 is blocked by the outer cover 5, and then when the heating wire 16 is started, the resistive electrode 2 9 and the resistive electrode 1 8 will also be energized, and the resistive electrode 1 8 and the resistive electrode 2 9 will also generate Joule heat, from The air in the inner cavity at the bottom of the shell 11 is heated, and the gas expands to generate a thrust on the piston 10. When the thrust is greater than the movement resistance of the piston 10, the piston 10 will move upward, thereby separating the resistive electrode 18 from the resistive electrode 29, and the circuit of the heating wire 16 is disconnected. After the test is completed, the shell 11 is driven up by the telescopic device 14, and the bottom opening of the shell 11 will dissipate heat. The piston 10 is reset. When the turntable 2 rotates, it will drive the limit contact rod 32 to rotate. When the limit contact rod 32 When rotating to the loading or unloading position, the sliding block 30 will be pulled inward by the spring three 31, thereby pulling the piston three 28 in the connecting tube 27 outward through the connecting rod 29, reducing the air pressure in the connecting tube 27 and releasing the clamping. When the limit touch rod 32 rotates to the non-loading and unloading position, the limit touch rod 32 will be limited by the cam 35 and move outward, thereby squeezing the piston three 28 into the inside of the connecting tube 27 through the connecting rod 29, increasing the air pressure in the connecting tube 27 and clamping.

[0058] Example 2: An automatic test bench for automotive electronics aging, such as Figure 5 、 8 As shown, in order to solve the automation problem, this embodiment makes the following improvements based on Example 1: the plug 22 is slidably connected to the side wall of the column 1 through the guide rod 39, and the plug 22 is driven by the linkage assembly 23.

[0059] The linkage assembly 23 includes a limiting groove 36 and a limiting column 38 that contact and cooperate with each other, and the protrusions of the limiting groove 36 are respectively directed toward the three groups of fixed clamping mechanisms 3.

[0060] When this embodiment is in use, when the fixed clamping mechanism 3 clamps the electronic component and rotates to the test position, the limiting groove 36 is convex at this time, so that the plug 22 can be driven outward by limiting the limiting column 38, so that the plug 22 is inserted into the integrated wiring harness socket.

[0061] This device, by providing a linkage assembly 23 and utilizing the mutual limitation between the limiting groove 36 and the limiting column 38, can make the connection and disconnection of the plug 22 and the integrated wiring harness fully automatic without the need for a power source and a control logic algorithm.

[0062] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An automatic test bench for automobile electronic aging, comprising a column (1) and a turntable (2) rotatably connected to the outer wall of the column (1), characterized in that: Three groups of fixed clamping mechanisms (3) in a circular array are provided on the top of the turntable (2), and one side of the top of the column (1) is connected to the heating temperature control mechanism (4) through an electric slider, and a plug (22) is provided on one side of the column (1) located at the test station; The heating and temperature control mechanism (4) comprises an outer cover (5) and a gas heating component (6) and a timing component (7) respectively arranged on the top of the outer cover (5); The gas-type heating component (6) includes an air pump (15) and a heating wire (16); an air inlet (17) is provided on the top of the outer cover (5); the air pump (15) is fixed to the end of the air inlet (17); and the air outlet of the air pump (15) is located on one side of the air inlet (17); the heating wire (16) is fixedly installed on the inner wall of the air inlet (17); The fixed clamping mechanism (3) is composed of two symmetrically arranged clamping components (20) and a socket block (21) fixed to the top of the turntable (2); The timing assembly (7) includes a shell (11) and a gantry (13), the shell (11) is connected to the inner side of the gantry (13) through a telescopic device (14), the inner wall of the shell (11) is slidably connected to a piston 1 (10), the bottom outer wall of the piston 1 (10) is fixed with a resistive electrode 2 (9), the bottom of the shell (11) is open, and the bottom inner wall of the shell (11) is fixed with a resistive electrode 1 (8), the top outer wall of the piston 1 (10) is buckled with a spring 1 (12), and the other end of the spring 1 (12) is buckled with the inner wall of the shell (11); The resistive electrode 1 (8) and the resistive electrode 2 (9) cooperate with each other, and the resistive electrode 1 (8) and the resistive electrode 2 (9) are connected in series to the circuit of the heating wire (16); The inner wall of the housing (11) is slidably connected to an arc-head clamping rod (18) via a second spring (19), and the arc-head clamping rod (18) is in contact and limited engagement with the first piston (10); The clamping assembly (20) includes a cavity plate (24) fixed to the top outer wall of the turntable (2) and a second piston (25) uniformly slidably connected to the side wall of the cavity plate (24), a clamp (26) for clamping electronic components is fixed to the side of the second piston (25), and the bottom of the cavity plate (24) is connected and communicated with a connecting pipe (27); A connecting ring (37) is fixed to the outer wall of the bottom of the turntable (2), a concave wheel (35) is fixed to the outer wall of the column (1) located on the inner wall of the connecting ring (37), and the concave part of the concave wheel (35) is located at the loading station and the unloading station; The inner wall of the connecting ring (37) is slidably connected to a limit contact rod (32) that contacts and limits the outer wall of the concave wheel (35); a sliding block (30) is fixed to the other end of the limit contact rod (32); a spring (31) is buckled on the opposite side of the sliding block (30) and the connecting ring (37); the other end of the sliding block (30) is rotatably connected to a connecting rod (29); the other end of the connecting rod (29) is rotatably connected to a piston (28) that slidably fits the inner wall of the connecting tube (27); The plug (22) is slidably connected to the side wall of the column (1) via a guide rod (39), and the plug (22) is driven by a linkage assembly (23); The linkage assembly (23) comprises a limiting groove (36) and a limiting column (38) that are in contact with each other and limit fit, and the protrusions of the limiting groove (36) are oriented towards the three groups of fixed clamping mechanisms (3).

2. The automotive electronic aging automatic test bench according to claim 1, characterized in that: The side wall of the column (1) is fixed with a motor (34) by means of bolts. The output shaft of the motor (34) is connected to the gear (33) by means of a key. The gear (33) is engaged with the outer wall of the connecting ring (37).

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