A test bench for automobile bus protocol conversion equipment

Abstract

The present invention relates to the field of automotive electronic manufacturing application technology, and discloses a test bench for automotive bus protocol conversion equipment, including a test base, a three-axis manipulator is mounted on the top of the test base, a programmable controller is fixedly installed on the front, three groups of conveying mechanisms are arranged in parallel on the top of the test base, and the three groups of conveying mechanisms can convey the conversion equipment, the three-axis manipulator includes an X-axis moving module, a Y-axis moving module and a Z-axis moving module, and the Z-axis moving module is provided with a clamping positioning mechanism and an air supply test mechanism. The test bench for automotive bus protocol conversion equipment intermittently conveys the conversion equipment through the conveying mechanism in the middle position, and drives the clamping positioning mechanism and the air supply test mechanism to move through the three-axis manipulator, and after the clamping positioning mechanism clamps and positions the conversion equipment after it is moved into place, power is provided by an electric telescopic rod to press the gas in the accordion airbag into the conversion equipment.

Description

Technical Field

[0001] The invention relates to the technical field of automobile electronic manufacturing application, in particular to an automobile bus protocol conversion equipment test bench. Background Art

[0002] With the development of the automobile industry, the control of various automobile systems has gradually shifted towards automation and intelligence, and the automobile electrical system has become increasingly complex. In order to meet the real-time requirements of various electronic systems, it is necessary to share automobile public data (such as engine speed, wheel speed, throttle pedal position, etc.). The commonly used automobile buses in automobiles are the local interconnect protocol LIN and the controller area network CAN, and various types of automobile data are converted through bus protocol conversion equipment.

[0003] In the production process of automotive bus protocol conversion equipment, in order to ensure its quality, it is necessary to test its various performances, and air tightness is an important indicator that the conversion equipment needs to test. Good air tightness ensures that the conversion equipment has good waterproof and dustproof effects during use. At present, the air tightness of automotive bus protocol conversion equipment is usually tested by soaking in water, that is, using manual or mechanical equipment to immerse the conversion equipment in water, and visually observe whether bubbles are generated. If there are bubbles, it means that the sealing is not good, and it is an NG product. If there are no bubbles, it is an OK product. This test method has many defects: after the test is completed, it is necessary to use an air gun to blow away the water on the conversion equipment, which takes a long time and leads to low test efficiency; if the conversion equipment leaks but the bubbles are small, it is not easy to see, and it is very easy to misjudge due to subjective factors; there are usually electronic components such as resistors and coils inside the conversion equipment, and soaking in water will inevitably affect its reliability and service life. For this reason, we propose an automotive bus protocol conversion equipment test bench to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a vehicle bus protocol conversion equipment test bench to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a test bench for automobile bus protocol conversion equipment, comprising a test base, a three-axis manipulator is mounted on the top of the test base, a programmable controller is fixedly installed on the front, three groups of conveying mechanisms are arranged in parallel on the top of the test base, and the three groups of conveying mechanisms can all convey the conversion equipment, the three-axis manipulator comprises an X-axis moving module, a Y-axis moving module and a Z-axis moving module, and a clamping positioning mechanism and an air supply test mechanism are arranged on the Z-axis moving module;

[0006] The clamping and positioning mechanism can clamp the conversion device transported on the conveying mechanism, and the clamping and positioning mechanism includes a connecting plate, an adjusting dial rotatably connected to the bottom of the connecting plate, four sets of transmission connecting rods hinged on the adjusting dial, a positioning end cover fixedly connected to the bottom of the connecting plate, four sets of support arms fixedly connected to the positioning end cover, a clamping arm slidably mounted on the support arm, a secondary clamping screw threadedly connected to the clamping arm, and a servo motor fixedly mounted on the top of the connecting plate, and the servo motor is transmission-connected to the adjusting dial;

[0007] The air supply test mechanism can pressurize air into the conversion device after being clamped by the clamping and positioning mechanism. The air supply test mechanism includes an electric telescopic rod, a mounting cage, a connecting frame fixedly connected to the output shaft of the electric telescopic rod, a primary air guide pipe arranged at one end of the connecting frame, a secondary air guide pipe and a tertiary air guide pipe movably mounted with the primary air guide pipe, a sealing end cover fixedly connected to the secondary air guide pipe, and an accordion-type air bag arranged inside the mounting cage, and a pressure plate, a one-way air inlet valve and a pressure sensor are fixedly installed on the top of the accordion-type air bag.

[0008] Preferably, the conveying mechanism includes a mounting bracket fixedly mounted on the top of the test base, a conveyor belt movably mounted inside the mounting bracket, and a limit baffle symmetrically arranged on the upper inner side of the mounting bracket. The conveyor belt can intermittently transport the conversion device when driven by a conveying stepper motor, and perform an airtight test on the conversion device during the interval through the cooperation of a clamping positioning mechanism and an air supply test mechanism.

[0009] Preferably, a group of conveying mechanisms close to the programmable controller is fixedly equipped with a conveying stepper motor, and the conveying stepper motor is transmission-connected to the conveyor belts in the three conveying mechanisms. The conveying stepper motor is electrically connected to the programmable controller. Under the control of the programmable controller, the conveying stepper motor can drive the three conveying mechanisms to move synchronously to realize the conveyance of the conversion equipment. At the same time, the three conveying mechanisms can respectively convey the conversion equipment to be tested, qualified products and unqualified products.

[0010] Preferably, the three-axis manipulator is electrically connected to the programmable controller, the Z-axis moving module includes a Z-axis moving slide movably mounted on the Y-axis moving module, a Z-axis servo motor fixedly mounted on the Z-axis moving slide, and a transmission backplate slidably mounted on the Z-axis moving slide, an adjusting screw is fixedly connected to the output shaft of the Z-axis servo motor, and the adjusting screw is transmission-connected to the transmission backplate, the X-axis moving module can drive the clamping and positioning mechanism and the air supply test mechanism to be adjusted along the X-axis, the Y-axis moving module can drive the clamping and positioning mechanism and the air supply test mechanism to move along the Y-axis, so as to realize the transportation of the conversion equipment between different conveying mechanisms, and the Z-axis moving module can adjust the height of the clamping and positioning mechanism and the air supply test mechanism.

[0011] Preferably, the connecting disk is fixedly connected to the bottom of the transmission back plate, and a mounting platform cooperating with the adjusting dial is provided at the bottom of the connecting disk, and a bearing is nested on the outside of the mounting platform. The adjusting dial is rotatably connected to the bottom of the connecting disk through the bearing, thereby ensuring that the adjusting dial is firmly installed at the bottom of the connecting disk and can rotate stably, thereby realizing stable adjustment of the four sets of clamping arms.

[0012] Preferably, the positioning end cover is fixedly connected to the turntable at the bottom of the connecting disk, and the diameter of the positioning end cover is larger than the diameter of the adjusting turntable. The positioning end cover can be used to position the adjusting turntable to prevent the adjusting turntable from falling off along the bottom of the connecting disk due to gravity.

[0013] Preferably, the positions of the four groups of transmission links correspond one-to-one to the four groups of support arms, and the end of the transmission link away from the adjusting dial is hingedly connected to the clamping arm on the support arm. When the adjusting dial rotates, the transmission is transmitted through the transmission links, which can drive the four groups of clamping arms to move synchronously, thereby realizing the clamping positioning of the conversion device.

[0014] Preferably, a transmission gear ring is provided above the outside of the adjustment dial, a driving gear is fixedly mounted on the output shaft of the servo motor, and the driving gear and the transmission gear ring are meshed with each other, the servo motor is electrically connected to the programmable controller, and the driving gear and the transmission gear ring are driven to rotate by the servo motor, which in turn drives the adjustment dial to rotate, thereby realizing the adjustment of the positions of the four groups of clamping arms.

[0015] Preferably, the electric telescopic rod and the mounting cage are both fixedly mounted on the transmission back plate, the connecting frame is slidably mounted on the transmission back plate, the connecting frame is fixedly connected to the pressure plate, the electric telescopic rod and the pressure sensor are both electrically connected to the programmable controller, and the connecting frame is driven to move by the electric telescopic rod to achieve the snap connection of the sealing end cover to the interface position at the top of the conversion device, and at the same time, the gas in the accordion airbag is pressed into the conversion device.

[0016] Preferably, the tertiary air duct is fixedly connected to the bottom end of the accordion-type airbag, the tertiary air duct is movably mounted on the top of the primary air duct, and the secondary air duct is movably mounted on the bottom of the primary air duct. The primary air duct and the secondary air duct are provided with mutually cooperating retaining rings to prevent the secondary air duct from falling off along the outside of the primary air duct due to the elastic force of the compression spring. The external movable sleeve of the primary air duct is provided with a compression spring located on the inner side of the secondary air duct, and a sealing ring is glued to the bottom of the sealing end cover to improve the sealing of the connection between the sealing end cover and the conversion device.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The vehicle bus protocol conversion equipment test bench intermittently transports the conversion equipment through the conveying mechanism in the middle position, and drives the clamping and positioning mechanism and the air supply test mechanism to move through the three-axis manipulator. After the clamping and positioning mechanism clamps and positions the conversion equipment after moving into place, the electric telescopic rod provides power to press the gas in the accordion airbag into the conversion equipment. The pressure value of the pressure sensor is monitored by the programmable controller to test the air tightness of the conversion equipment. The test bench can realize continuous testing of the air tightness of the conversion equipment, thereby improving the test efficiency. The air tightness of the conversion equipment is tested by monitoring the air pressure changes, thereby improving the accuracy of the test and avoiding affecting the reliability and service life of the conversion equipment.

[0019] 2. The automotive bus protocol conversion device test bench can clamp the conversion device by driving four sets of clamping arms to move synchronously through servo motors. At the same time, the secondary clamping screws on the clamping arms are adjusted according to the length and width of the conversion device, so as to clamp the conversion device to the center position of the connecting disk, realize precise positioning between the sealing end cover and the conversion device, ensure that the sealing end cover can effectively seal the interface of the conversion device, and thus ensure the accuracy of the airtight test of the conversion device.

[0020] 3. The vehicle bus protocol conversion equipment test bench, after the clamping and positioning mechanism clamps and positions the conversion equipment, drives the connecting frame and the primary air duct, the secondary air duct, and the sealing end cover to move downward through the electric telescopic rod, and snaps the sealing end cover into the conversion equipment interface to achieve sealing of the conversion equipment interface. At the same time, the electric telescopic rod continues to drive the connecting frame downward while synchronously driving the pressure plate to press the gas in the accordion airbag into the conversion equipment along the air duct to achieve pressurized testing of the conversion equipment. The driving structure and the air supply structure of the sealing end cover are integrated, and there is no need to set up an additional air pump structure, thereby reducing costs.

[0021] 4. The vehicle bus protocol conversion equipment test bench has three sets of conveying mechanisms arranged in parallel. The conveying mechanism in the middle position can convey the conversion equipment to be tested, and the other two sets of conveying mechanisms can convey qualified and unqualified conversion equipment. While testing the air tightness of the conversion equipment, the conversion equipment can be sorted. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the structure after the overall combination of the present invention;

[0023] Figure 2 It is a structural schematic diagram of the top of the test base in the present invention;

[0024] Figure 3 It is a structural schematic diagram of the conveying mechanism in the present invention;

[0025] Figure 4It is a structural schematic diagram of the three-axis manipulator in the present invention;

[0026] Figure 5 It is a structural schematic diagram of the installation positions of the clamping and positioning mechanism and the air supply testing mechanism in the present invention;

[0027] Figure 6 It is a structural schematic diagram of the clamping and positioning mechanism in the present invention;

[0028] Figure 7 It is a schematic diagram of the structure of the peripheral side of the connecting disk in the present invention;

[0029] Figure 8 It is a structural schematic diagram of the cross section of the connecting disk and the adjusting rotating disk in the present invention;

[0030] Fig. 9 It is a structural schematic diagram of the gas supply test mechanism in the present invention;

[0031] Fig.10 It is a schematic diagram of the structure inside the installation cage in the present invention;

[0032] Fig.11 It is a schematic diagram of the structure of the connection frame and the first, second and third level air guide pipes in the present invention.

[0033] In the figure: 1. Test base; 2. Conveying mechanism; 21. Mounting bracket; 22. Conveying belt; 23. Limit baffle; 3. Conveying stepper motor; 4. Three-axis manipulator; 41. X-axis moving module; 42. Y-axis moving module; 43. Z-axis moving module; 431. Z-axis moving slide; 432. Z-axis servo motor; 433. Adjusting screw rod; 434. Transmission back plate; 5. Clamping and positioning mechanism; 50. Positioning end cover; 51. Connecting plate; 52. Adjusting turntable; 53. Transmission gear ring; 54. Servo motor; 55. Driving gear; 56. Support arm; 57. Transmission connecting rod; 58. Clamping arm; 59. Secondary clamping screw; 6. Air supply test mechanism; 61. Electric telescopic rod; 62. Connecting frame; 63. Primary air duct; 64. Secondary air duct; 65. Compression spring; 66. Sealing end cover; 67. Mounting cage; 68. Accordion airbag; 69. Pressure plate; 691. Tertiary air duct; 692. One-way air inlet valve; 693. Pressure sensor; 7. Programmable controller. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] See also Figures 1 to 11 In an embodiment of the present invention, a vehicle bus protocol conversion device test bench includes a test base 1, a three-axis manipulator 4 is mounted on the top of the test base 1, a programmable controller 7 is fixedly installed on the front, three groups of conveying mechanisms 2 are arranged in parallel on the top of the test base 1, and the three groups of conveying mechanisms 2 can all convey the conversion device. By arranging the three groups of conveying mechanisms 2 in parallel, the conveying mechanism 2 in the middle position can convey the conversion device to be tested, and the other two groups of conveying mechanisms 2 can convey qualified and unqualified conversion devices, and the conversion device can be sorted while the air tightness test is being performed on the conversion device. The three-axis manipulator 4 includes an X-axis moving The moving module 41, the Y-axis moving module 42 and the Z-axis moving module 43 are provided with a clamping and positioning mechanism 5 and an air supply test mechanism 6. The conversion device is intermittently transported by the conveying mechanism 2 in the middle position, and the clamping and positioning mechanism 5 and the air supply test mechanism 6 are driven to move by the three-axis manipulator 4. After the clamping and positioning mechanism 5 clamps and positions the conversion device after it moves into place, the electric telescopic rod 61 provides power to press the gas in the accordion airbag 68 into the conversion device. The pressure value of the pressure sensor 693 is monitored by the programmable controller 7, so as to realize the air tightness test of the conversion device.

[0036] The clamping and positioning mechanism 5 can clamp the conversion device transported on the conveying mechanism 2. The clamping and positioning mechanism 5 includes a connecting disk 51, an adjusting dial 52 rotatably connected to the bottom of the connecting disk 51, four groups of transmission connecting rods 57 hinged on the adjusting dial 52, a positioning end cover 50 fixedly connected to the bottom of the connecting disk 51, four groups of support arms 56 fixedly connected to the positioning end cover 50, a clamping arm 58 slidably mounted on the support arm 56, a secondary clamping screw 59 threadedly connected to the clamping arm 58, and a servo motor 54 fixedly mounted on the top of the connecting disk 51. The servo motor 54 is transmission-connected to the adjusting dial 52, and the four groups of clamping arms 58 are driven by the servo motor 54 to move synchronously, so as to realize the clamping of the conversion device. At the same time, according to the length and width of the conversion device, the secondary clamping screw 59 on the clamping arm 58 is adjusted, so as to realize the clamping of the conversion device to the center position of the connecting disk 51, and realize the precise positioning between the sealing end cover 66 and the conversion device.

[0037] The air supply test mechanism 6 can pressurize air into the conversion device after being clamped by the clamping and positioning mechanism 5. The air supply test mechanism 6 includes an electric telescopic rod 61, a mounting cage 67, and a connecting frame 62 fixedly connected to the output shaft of the electric telescopic rod 61. The connecting frame 62, the primary air guide pipe 63, the secondary air guide pipe 64, and the sealing end cover 66 are driven downward by the electric telescopic rod 61, and the sealing end cover 66 is snapped to the interface of the conversion device to achieve sealing of the conversion device interface. The primary air guide pipe 63 arranged at one end of the connecting frame 62, the secondary air guide pipe 64 and the tertiary air guide pipe 691 that are movably mounted on the primary air guide pipe 63, and the sealing end cover 66 that are fixedly connected to the secondary air guide pipe 64 are sealed. The end cover 66 is an accordion-type airbag 68 arranged inside the mounting cage 67. When the electric telescopic rod 61 continues to drive the connecting frame 62 to move downward, it simultaneously drives the pressure plate 69 to move, and presses the gas in the accordion-type airbag 68 into the conversion device along the air guide tube, so as to realize the pressurization test of the conversion device. The pressure plate 69, the one-way air inlet valve 692 and the pressure sensor 693 are fixedly installed on the top of the accordion-type airbag 68. After the conversion device is pressurized, the internal pressure of the conversion device is detected by the pressure sensor 693, and the air tightness of the conversion device is tested by monitoring the air pressure changes, which improves the accuracy of the test and avoids affecting the reliability and service life of the conversion device.

[0038] As a further implementation scheme of the above invention: the conveying mechanism 2 includes a mounting bracket 21 fixedly mounted on the top of the test base 1, a conveyor belt 22 movably mounted inside the mounting bracket 21, and a limit baffle 23 symmetrically arranged on the upper inner side of the mounting bracket 21. The conveyor belt 22 is driven by the conveying stepper motor 3 to intermittently convey the conversion device, and during the intervals, the clamping positioning mechanism 5 and the air supply test mechanism 6 cooperate to perform an airtight test on the conversion device. When the conveyor belt 22 rotates to convey the conversion device, the limit baffle 23 can assist in positioning the conversion device.

[0039] As a further implementation scheme of the above invention: a group of conveying mechanisms 2 near the programmable controller 7 is fixedly installed with a conveying stepper motor 3, and the conveying stepper motor 3 is transmission-connected to the conveyor belts 22 in the three groups of conveying mechanisms 2, and the conveying stepper motor 3 is electrically connected to the programmable controller 7. The conveying stepper motor 3 can drive the three groups of conveying mechanisms 2 to move synchronously under the control of the programmable controller 7 to realize the conveyance of the conversion equipment. At the same time, the three groups of conveying mechanisms 2 can respectively convey the conversion equipment to be tested, qualified products and unqualified products. The conveying stepper motor 3 is a prior art and is commercially available.

[0040] As a further implementation scheme of the above invention: the three-axis manipulator 4 is electrically connected to the programmable controller 7, the Z-axis moving module 43 includes a Z-axis moving slide 431 movably mounted on the Y-axis moving module 42, a Z-axis servo motor 432 fixedly mounted on the Z-axis moving slide 431, and a transmission backplate 434 slidably mounted on the Z-axis moving slide 431, an adjusting screw 433 is fixedly connected to the output shaft of the Z-axis servo motor 432, and the adjusting screw 433 is transmission-connected to the transmission backplate 434, the three-axis manipulator 4 is prior art, obtained commercially, the X-axis moving module 41 can drive the clamping and positioning mechanism 5 and the air supply test mechanism 6 to adjust along the X-axis, the Y-axis moving module 42 can drive the clamping and positioning mechanism 5 and the air supply test mechanism 6 to move along the Y-axis, so as to realize the transportation of the conversion device between different conveying mechanisms 2, and the Z-axis moving module 43 can adjust the height of the clamping and positioning mechanism 5 and the air supply test mechanism 6, so as to realize the clamping and airtightness test of the conversion device.

[0041] As a further implementation scheme of the above invention: the connecting disk 51 is fixedly connected to the bottom of the transmission back plate 434, and a mounting platform cooperating with the adjusting dial 52 is provided at the bottom of the connecting disk 51, and a bearing is nested on the outside of the mounting platform. The adjusting dial 52 is rotatably connected to the bottom of the connecting disk 51 through the bearing, ensuring that the adjusting dial 52 is firmly installed at the bottom of the connecting disk 51 and can rotate stably, thereby realizing stable adjustment of the four sets of clamping arms 58.

[0042] As a further implementation scheme of the above invention: the positioning end cover 50 is fixedly connected to the turntable at the bottom of the connecting disk 51, and the diameter of the positioning end cover 50 is larger than the diameter of the adjusting turntable 52. The positioning end cover 50 can be used to position the adjusting turntable 52 to prevent the adjusting turntable 52 from falling off along the bottom of the connecting disk 51 due to gravity.

[0043] As a further implementation scheme of the above invention: the positions of the four groups of transmission links 57 correspond one to one with the four groups of support arms 56, and the end of the transmission link 57 away from the adjusting dial 52 is hingedly connected to the clamping arm 58 on the support arm 56. When the adjusting dial 52 rotates, it is transmitted through the transmission link 57, which can drive the four groups of clamping arms 58 to move synchronously, thereby realizing the clamping positioning of the conversion equipment.

[0044] As a further implementation scheme of the above invention: a transmission gear ring 53 is arranged above the outside of the adjusting dial 52, a driving gear 55 is fixedly mounted on the output shaft of the servo motor 54, and the driving gear 55 and the transmission gear ring 53 are meshed with each other. The servo motor 54 is a prior art and is commercially available. The servo motor 54 is electrically connected to the programmable controller 7. The driving gear 55 and the transmission gear ring 53 are driven to rotate by the servo motor 54, and then the adjusting dial 52 can be driven to rotate, thereby adjusting the positions of the four groups of clamping arms 58.

[0045] As a further implementation scheme of the above invention: the electric telescopic rod 61 and the mounting cage 67 are both fixedly mounted on the transmission back plate 434, the connecting frame 62 is slidably mounted on the transmission back plate 434, the connecting frame 62 is fixedly connected to the pressure plate 69, and the electric telescopic rod 61 drives the connecting frame 62 to move, so as to adjust the position of the sealing end cover 66, and to snap the sealing end cover 66 into the interface position at the top of the conversion device, and at the same time drive the pressure plate 69 to move downward, so as to press the gas in the accordion airbag 68 into the conversion device, the electric telescopic rod 61 and the pressure sensor 693 are both electrically connected to the programmable controller 7, and the electric telescopic rod 61 and the pressure sensor 693 are both prior art and are commercially available.

[0046] As a further implementation scheme of the above invention: the tertiary air guide tube 691 is fixedly connected to the bottom end of the accordion-type air bag 68, and the tertiary air guide tube 691 is movably mounted on the top of the primary air guide tube 63. When the connecting frame 62 drives the primary air guide tube 63 to move up and down, it is ensured that the tertiary air guide tube 691 and the primary air guide tube 63 are still in a connected state. At the same time, the primary air guide tube 63 and the accordion-type air bag 68 can also be connected through a hose. The secondary air guide tube 64 is movably mounted below the primary air guide tube 63. The primary air guide tube 63 and the secondary air guide tube 64 are provided with mutually cooperating retaining rings to prevent the secondary air guide tube 64 from falling off along the outside of the primary air guide tube 63 under the elastic force of the compression spring 65. The outer movably mounted portion of the primary air guide tube 63 is provided with a compression spring 65 located on the inner side of the secondary air guide tube 64. A sealing ring is glued to the bottom of the sealing end cover 66 to improve the sealing performance of the connection between the sealing end cover 66 and the conversion device.

[0047] During specific implementation: the programmable controller 7 controls the conveying stepper motor 3 to drive the conveyor belts 22 in the three groups of conveying mechanisms 2 to rotate synchronously and intermittently, and the conversion device to be tested is placed on the middle conveying mechanism 2 with the interface facing upwards, and the conversion device to be tested is gradually conveyed to the bottom of the clamping and positioning mechanism 5 through the middle conveying mechanism 2. When the conveyor belt 22 rotates to convey the conversion device, the symmetrically distributed limit baffles 23 are used to assist in positioning the conversion device; after each intermittent action of the conveying mechanism 2, the programmable controller 7 controls the three-axis manipulator 4 to drive the clamping and positioning mechanism 5 and the air supply test mechanism 6 to clamp and position the conversion device delivered to the middle conveying mechanism 2 and perform airtightness Before testing the conversion device, the secondary clamping screws 59 on the four clamping arms 58 are adjusted according to the length and width of the conversion device, so that when the clamping arms 58 drive the secondary clamping screws 59 to clamp the conversion device, the conversion device can be clamped to the center of the connecting plate 51, so as to realize the positioning of the conversion device and the sealing end cover 66; the Z-axis servo motor 432 drives the adjusting screw 433 to rotate, drives the transmission back plate 434 and the clamping positioning mechanism 5 and the air supply test mechanism 6 to move downward as a whole, and moves the four clamping arms 58 in the clamping positioning mechanism 5 downward to the peripheral side of the conversion device, and the servo motor 54 drives the driving gear 55-transmission gear ring 53 to rotate, thereby driving the adjusting turntable 52 The four sets of clamping arms 58 are driven to move inward synchronously through four sets of transmission connecting rods 57. Since the positions of the secondary clamping screws 59 on the four sets of clamping arms 58 have been adjusted in advance, the secondary clamping screws 59 on the four sets of clamping arms 58 can clamp the conversion device to the center position of the connecting plate 51, thereby realizing the positioning between the conversion device and the sealing end cover 66. The electric telescopic rod 61 drives the connecting frame 62, the primary air guide tube 63, the secondary air guide tube 64, and the sealing end cover 66 to move downward. The sealing end cover 66 is first clamped to the interface at the top of the conversion device to seal the interface position at the top of the conversion device. The connecting frame 62 drives the pressure plate 69 to move downward during the downward movement to seal the accordion airbag 68. The sealing end cover 66 is clamped at the interface position of the conversion device, and the gas in the accordion airbag 68 is squeezed into the conversion device along the third-level air guide pipe 691, the first-level air guide pipe 63 and the second-level air guide pipe 64, and the conversion device is squeezed. After the electric telescopic rod 61 drives the connecting frame 62 to move down to the set position, the conversion device is pressurized for 3-8 seconds, and the data of the pressure sensor 693 is monitored by the programmable controller 7. During the pressure holding stage, the data of the pressure sensor 693 does not change, indicating that the conversion device has no leaks and the air tightness is qualified. During the pressure holding stage, the data of the pressure sensor 693 changes, especially the pressure decreases, indicating that the conversion device has leaks and the air tightness is unqualified.After the test is completed, the electric telescopic rod 61 drives the connecting frame 62 and the primary air guide tube 63 to reset. The connecting frame 62 drives the pressing plate 69 to move upward during the upward movement, and pulls the accordion airbag 68 to expand again through the pressing plate 69, and adsorbs along the one-way air inlet valve 692, so that the accordion airbag 68 can continue to work in the future; for the conversion equipment that passes the air tightness test, the programmable controller 7 controls the Y-axis moving module 42 to drive the Z-axis moving module 43 to move, and transports the qualified conversion equipment to a group of conveying mechanisms 2 at the edge for transportation; for the conversion equipment that fails the air tightness test, the programmable controller 7 controls the Y-axis moving module 42 to drive the Z-axis moving module 43 to move, and transports the qualified conversion equipment to another group of conveying mechanisms 2 at the edge for transportation. ;

[0048] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A vehicle bus protocol conversion equipment test bench, comprising a test base (1), a three-axis manipulator (4) is mounted on the top of the test base (1), and a programmable controller (7) is fixedly mounted on the front, characterized in that: Three groups of conveying mechanisms (2) are arranged in parallel on the top of the test base (1), and the three groups of conveying mechanisms (2) can all convey the conversion equipment, the three-axis manipulator (4) comprises an X-axis moving module (41), a Y-axis moving module (42) and a Z-axis moving module (43), and the Z-axis moving module (43) is provided with a clamping positioning mechanism (5) and an air supply test mechanism (6); The clamping and positioning mechanism (5) can clamp the conversion device transported on the conveying mechanism (2), and the clamping and positioning mechanism (5) comprises a connecting plate (51), an adjusting dial (52) rotatably connected to the bottom of the connecting plate (51), four groups of transmission connecting rods (57) hinged on the adjusting dial (52), a positioning end cover (50) fixedly connected to the bottom of the connecting plate (51), four groups of support arms (56) fixedly connected to the positioning end cover (50), a clamping arm (58) slidably mounted on the support arm (56), a secondary clamping screw (59) threadedly connected to the clamping arm (58), and a servo motor (54) fixedly mounted on the top of the connecting plate (51), wherein the servo motor (54) is transmission-connected to the adjusting dial (52); The air supply test mechanism (6) can pressurize air into the conversion device after being clamped by the clamping and positioning mechanism (5), and the air supply test mechanism (6) comprises an electric telescopic rod (61), a mounting cage (67), a connecting frame (62) fixedly connected to the output shaft of the electric telescopic rod (61), a primary air guide tube (63) arranged at one end of the connecting frame (62), a secondary air guide tube (64) and a tertiary air guide tube (691) movably mounted on the primary air guide tube (63), a sealing end cover (66) fixedly connected to the secondary air guide tube (64), and an accordion-type air bag (68) arranged inside the mounting cage (67), wherein a pressure plate (69), a one-way air inlet valve (692) and a pressure sensor (693) are fixedly installed on the top of the accordion-type air bag (68); The positions of the four groups of transmission connecting rods (57) correspond to the four groups of support arms (56) in a one-to-one manner, and one end of the transmission connecting rod (57) away from the adjustment dial (52) is hingedly connected to a clamping arm (58) on the support arm (56); The tertiary air guide tube (691) is fixedly connected to the bottom end of the accordion-type air bag (68); the tertiary air guide tube (691) is movably mounted on the top of the primary air guide tube (63); the secondary air guide tube (64) is movably mounted on the bottom of the primary air guide tube (63); the primary air guide tube (63) and the secondary air guide tube (64) are provided with retaining rings that cooperate with each other; the outer part of the primary air guide tube (63) is movably mounted with a compression spring (65) located on the inner side of the secondary air guide tube (64); and the bottom of the sealing end cover (66) is glued with a sealing ring.

2. The vehicle bus protocol conversion equipment test bench according to claim 1, characterized in that: The conveying mechanism (2) comprises a mounting bracket (21) fixedly mounted on the top of the test base (1), a conveying belt (22) movably mounted inside the mounting bracket (21), and a limit baffle (23) symmetrically arranged above the inner side of the mounting bracket (21).

3. The vehicle bus protocol conversion equipment test bench according to claim 1, characterized in that: A conveying stepper motor (3) is fixedly mounted on a group of conveying mechanisms (2) near the programmable controller (7), and the conveying stepper motor (3) is drivingly connected to the conveying belts (22) in the three groups of conveying mechanisms (2), and the conveying stepper motor (3) is electrically connected to the programmable controller (7).

4. The vehicle bus protocol conversion equipment test bench according to claim 1, characterized in that: The three-axis manipulator (4) is electrically connected to a programmable controller (7); the Z-axis moving module (43) comprises a Z-axis moving slide (431) movably mounted on the Y-axis moving module (42); a Z-axis servo motor (432) fixedly mounted on the Z-axis moving slide (431); and a transmission back plate (434) slidably mounted on the Z-axis moving slide (431); an adjusting screw (433) is fixedly connected to the output shaft of the Z-axis servo motor (432), and the adjusting screw (433) is transmission-connected to the transmission back plate (434).

5. The vehicle bus protocol conversion equipment test bench according to claim 4, characterized in that: The connecting disk (51) is fixedly connected to the bottom of the transmission back plate (434); a mounting platform matched with the adjusting turntable (52) is provided at the bottom of the connecting disk (51); a bearing is embedded on the outside of the mounting platform; the adjusting turntable (52) is rotatably connected to the bottom of the connecting disk (51) via the bearing.

6. The vehicle bus protocol conversion equipment test bench according to claim 5, characterized in that: The positioning end cap (50) is fixedly connected to a turntable at the bottom of the connection disk (51), and the diameter of the positioning end cap (50) is greater than the diameter of the adjustment turntable (52).

7. The vehicle bus protocol conversion equipment test bench according to claim 1, characterized in that: A transmission gear ring (53) is arranged above the outside of the adjustment dial (52), a driving gear (55) is fixedly mounted on the output shaft of the servo motor (54), and the driving gear (55) and the transmission gear ring (53) are meshed with each other, and the servo motor (54) is electrically connected to the programmable controller (7).

8. The vehicle bus protocol conversion equipment test bench according to claim 4, characterized in that: The electric telescopic rod (61) and the mounting cage (67) are both fixedly mounted on the transmission back plate (434), the connecting frame (62) is slidably mounted on the transmission back plate (434), the connecting frame (62) is fixedly connected to the pressure plate (69), and the electric telescopic rod (61) and the pressure sensor (693) are both electrically connected to the programmable controller (7).

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