A six-position testing device and method for brake master cylinder

Abstract

This invention discloses a six-station testing device and method for brake master cylinders, relating to the field of brake master cylinder testing equipment. It includes a test bench with a rotating platform rotatably mounted on it. Six stations are evenly distributed on the rotating platform, each equipped with a master cylinder positioning seat and a sensor. An RFID card is positioned next to each master cylinder positioning seat, and an RFID reader / writer is located at the corresponding position of the RFID card at each station to read and write test data of the master cylinder under test. The testing method includes master cylinder placement, first piston stroke detection, static seal and no-stroke detection, dynamic seal and full stroke detection, secondary piston cup seal detection, laser marking, and pass / fail judgment. This invention optimizes the spatial layout requirements of brake master cylinder testing equipment on the production line, shortening the production line length; it enables single-person operation of one testing device, reducing the risk of product damage from repeated assembly and disassembly, and significantly improving testing efficiency.

Description

Technical Field

[0001] This invention relates to the field of brake master cylinder testing equipment, and specifically to a six-station brake master cylinder testing equipment and testing method. Background Technology

[0002] Brake master cylinder testing equipment is used to inspect the effectiveness and reliability of the assembly process during the production of brake master cylinders, ensuring product quality. Current brake master cylinder testing equipment uses a single device to test one item, requiring multiple devices for multiple items. However, arranging multiple devices linearly together occupies a large production space, necessitates manual handling of the brake master cylinders between devices, and requires manual operation of each device. This results in low overall automation, a large number of operators, and low testing efficiency. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a six-station testing device and method for brake master cylinder, which can automatically test all six stations with only one operator, greatly improving the testing efficiency.

[0004] The objective of this invention is achieved through the following technical solution: This six-station brake master cylinder testing device includes a test platform, on which a rotating platform is rotatably mounted. The rotating platform has a first station, a second station, a third station, a fourth station, a fifth station, and a sixth station evenly distributed along the circumference. Each station is equipped with a master cylinder positioning seat for placing the master cylinder under test and a sensor for sensing the master cylinder. An RFID card is correspondingly positioned next to each master cylinder positioning seat. An RFID read / write device is positioned at the corresponding location of the RFID card at each station to read and write the test data of the master cylinder under test to the RFID card. The second station is equipped with a first piston testing device for detecting the first piston stroke of the master cylinder under test. The third station is equipped with a static seal and no-stroke testing device for testing the stroke of the main cylinder under static sealing conditions; the fourth station is equipped with a dynamic seal and full-stroke testing device for testing the vacuum dynamic seal of the main cylinder under test; the fifth station is equipped with a secondary piston cup sealing testing device for testing the sealing performance of the secondary piston cup of the main cylinder under test; the sixth station is equipped with a laser marking machine, which communicates with an RFID reader to obtain the test information of the main cylinder under test and generates a QR code, which is then engraved on the surface of the main cylinder under test by the laser marking machine; the sensor controls the operation of the rotating platform, the first piston testing device, the static seal and no-stroke testing device, the dynamic seal and full-stroke testing device, the secondary piston cup sealing testing device, and the laser marking machine through signals.

[0005] As a further technical solution, a through hole is opened at the center of the main cylinder positioning seat.

[0006] As a further technical solution, the first piston testing device includes a piston push rod disposed below the master cylinder positioning seat. The piston push rod passes through the through hole to realize the first piston stroke test of the master cylinder under test.

[0007] As a further technical solution, the static seal and no-stroke test device, the dynamic seal and full-stroke test device, and the auxiliary cup seal test device all include a main cylinder push stroke guide rod, a cylinder body clamping device, and a sealing element; the main cylinder push stroke guide rod passes through the through hole and is used to lift the main cylinder to be tested, the cylinder body clamping device is used to clamp the main cylinder to be tested, and the sealing element is used to seal the main cylinder to be tested.

[0008] As a further technical solution, the main cylinder propulsion stroke guide rod is driven to rise and fall by a servo electric cylinder, and the servo electric cylinder is fixed below the test platform by a clamping device.

[0009] As a further technical solution, the cylinder pressing device is driven to rise and fall by a pressing cylinder.

[0010] As a further technical solution, the sealing element is driven to extend and retract by a sealing element pushing device, which is mounted on the sealing element fixing device.

[0011] As a further technical solution, the rotating platform is driven to rotate by a power-off self-locking stepper motor, and the rotating platform rotates one-sixth of a revolution each time.

[0012] A method for testing a brake master cylinder at six positions includes the following steps:

[0013] 1) Master cylinder placement: Place the master cylinder to be tested on the first station. After the sensor on the first station senses the master cylinder to be tested, control the rotating platform to rotate the master cylinder to the second station.

[0014] 2) First piston stroke detection: After the sensor on the second station senses the master cylinder under test, the first piston test device is started to detect the first piston stroke of the master cylinder under test. After the test is completed, the RF read / write device on the second station writes the test data into the corresponding RF card, and the rotating platform rotates the master cylinder under test to the third station.

[0015] 3) Static sealing and no-stroke detection: After the sensor on the third station senses the main cylinder under test, it starts the static sealing and no-stroke test device to perform a stroke test under static sealing on the main cylinder under test. After the test is completed, the RF reading and writing device on the third station writes the test data into the corresponding RF card, and the rotating platform rotates the main cylinder under test to the fourth station.

[0016] 4) Dynamic seal and full stroke test: After the sensor on the fourth station senses the main cylinder under test, it starts the dynamic seal and full stroke test device to perform a vacuum dynamic seal test on the main cylinder under test. After the test is completed, the RF reading and writing device on the fourth station writes the test data into the corresponding RF card, and the rotating platform rotates the main cylinder under test to the fifth station.

[0017] 5) Sub-bowl sealing test: After the sensor on the fifth station senses the main cylinder under test, the sub-bowl sealing test device is started to test the sealing performance of the sub-bowl of the main cylinder under test. After the test is completed, the RF reading and writing device on the fifth station writes the test data into the corresponding RF card, and the rotating platform rotates the main cylinder under test to the sixth station.

[0018] 6) Laser marking: After the sensor on the sixth station detects the main cylinder to be tested, the radio frequency reading and writing device on the sixth station reads the corresponding radio frequency card information, generates a QR code, starts the laser marking machine, and laser engraves the QR code on the surface of the main cylinder to be tested. The rotating platform rotates the main cylinder to be tested to the first station.

[0019] 7) Qualification judgment: After the sensor on the first station senses the master cylinder under test, the RF card information is read by the RF reading and writing device on the first station, and the qualification of the master cylinder under test is judged. After the judgment is completed, the master cylinder under test is removed from the master cylinder positioning seat of the first station.

[0020] As a further technical solution, in step 7), if the master cylinder under test is qualified, a green light will be lit; if the master cylinder under test is unqualified, an alarm signal will be issued.

[0021] The beneficial effects of this invention are as follows: the design and manufacturing of the brake master cylinder testing equipment in this solution optimizes the spatial layout requirements of the brake master cylinder testing equipment on the production line and shortens the length of the production line; it realizes single-person operation of one testing equipment and single-piece flow of products; at the same time, it reduces the time for multiple assembly and disassembly of products and the risk of product collisions when using single-station testing equipment, and greatly improves testing efficiency. Attached Figure Description

[0022] Figure 1 This is the main structural view of the present invention.

[0023] Figure 2 This is a top view of the structure of the present invention.

[0024] Figure 3 This is a schematic diagram of the static sealing and no-travel testing device in this invention.

[0025] Explanation of reference numerals in the attached drawings: Station 1, Station 2, Station 3, Station 4, Station 5, Station 6, Rotary platform, Test platform, Main cylinder positioning seat, Main cylinder under test, Radio frequency reading and writing device, First piston testing device, Static seal and no-stroke testing device, Dynamic seal and full stroke testing device, Secondary leather cup seal testing device, Laser marking machine, Through hole, Main cylinder propulsion stroke guide rod, Cylinder body clamping device, Sealing element, Servo electric cylinder, Tightening device, Clamping cylinder, Sealing element propulsion device, Sealing element fixing device, Radio frequency card, RFID card. Detailed Implementation

[0026] The present invention will now be described in detail with reference to the accompanying drawings:

[0027] Example: As attached Figures 1-3 As shown, a six-station testing device for a brake master cylinder includes a test platform 8. A rotating platform 7 is rotatably mounted on the test platform 8. The rotating platform 7 has six stations (1, 2, 3, 4, 5, and 6) evenly distributed along its circumference. Each station is equipped with a master cylinder positioning seat 9 for placing the master cylinder 10 under test and a sensor for sensing the master cylinder 10. An RFID card 26 is positioned next to each master cylinder positioning seat 9. An RFID reader / writer 11 is positioned at each station corresponding to the RFID card 26 to read and write the test data of the master cylinder 10 under test to the RFID card 26. The RFID card 26 rotates with the rotating platform 7 and passes through the six stations, thereby recording the test data of the same master cylinder 10 under test at each station. The second station 2 is equipped with a first piston testing device 12 for detecting the first piston stroke of the main cylinder 10 under test; the third station 3 is equipped with a static seal and idle stroke testing device 13 for performing a static seal stroke test on the main cylinder 10 under test; the fourth station 4 is equipped with a dynamic seal and full stroke testing device 14 for performing a vacuum dynamic seal test on the main cylinder 10 under test; the fifth station 5 is equipped with a secondary diaphragm seal testing device 15 for detecting the secondary diaphragm seal performance of the main cylinder 10 under test; the sixth station 6 is equipped with a laser marking machine 16, which communicates with the radio frequency reader / writer 11 to obtain the test information of the main cylinder 10 under test and generates a QR code, which is then engraved on the surface of the main cylinder 10 under test by the laser marking machine 16; the sensor controls the operation of the rotating platform 7, the first piston testing device 12, the static seal and idle stroke testing device 13, the dynamic seal and full stroke testing device 14, the secondary diaphragm seal testing device 15, and the laser marking machine 16 through signals.

[0028] Reference Appendix Figure 3The main cylinder positioning seat 9 has a through hole 17 at its center. The static seal and idle stroke testing device 13, the dynamic seal and full stroke testing device 14, and the auxiliary cup seal testing device 15 all include a main cylinder thrust stroke guide rod 18, a cylinder body clamping device 19, and a sealing element 20. The main cylinder thrust stroke guide rod 18 passes through the through hole 17 and is used to lift the main cylinder 10 under test. The cylinder body clamping device 19 is used to clamp the main cylinder 10 under test. The sealing element 20 is used to seal the main cylinder 10 under test. The main cylinder thrust stroke guide rod 18 is driven to rise and fall by a servo electric cylinder 21, which is fixed below the test platform 8 by a clamping device 22. The cylinder body clamping device 19 is driven to rise and fall by a clamping cylinder 23. The sealing element 20 is driven to extend and retract by a sealing element thrust device 24, which is mounted on a sealing element fixing device 25, which is fixed to the test platform 8.

[0029] The first piston testing device 12 includes a piston push rod (not shown in the figure, its structure is similar to the main cylinder thrust stroke guide rod 18) located below the main cylinder positioning seat 9. The piston push rod passes through the through hole 17 to perform stroke testing on the first piston of the main cylinder 10 to be tested.

[0030] Preferably, the rotating platform 7 is driven to rotate by a power-off self-locking stepper motor, and the rotating platform 7 rotates one-sixth of a revolution each time, that is, it moves from the previous workstation to the next workstation. The radio frequency reading and writing device 11 is preferably an RFID reader / writer.

[0031] A six-position testing method for brake master cylinder, see attached document. Figure 2 This includes the following steps:

[0032] 1) Master cylinder placement: Place the master cylinder 10 to be tested on the first station 1. After the sensor on the first station 1 senses the master cylinder 10 to be tested, control the rotating platform 7 to rotate the master cylinder 10 to the second station 2.

[0033] 2) First piston stroke detection: After the sensor on the second station 2 senses the test master cylinder 10, the first piston test device 12 is started to detect the first piston stroke of the test master cylinder 10. After the test is completed, the radio frequency reading and writing device 11 on the second station 2 writes the test data into the corresponding radio frequency card 26, and the rotating platform 7 rotates the test master cylinder 10 to the third station 3.

[0034] 3) Static sealing and no-stroke detection: After the sensor on the third station 3 senses the main cylinder 10 under test, the static sealing and no-stroke test device 13 is started to perform a stroke test under static sealing on the main cylinder 10 under test. After the test is completed, the RF reading and writing device 11 on the third station 3 writes the test data into the corresponding RF card 26, and the rotating platform 7 rotates the main cylinder 10 under test to the fourth station 4.

[0035] 4) Dynamic seal and full stroke test: After the sensor on the fourth station 4 senses the main cylinder 10 under test, the dynamic seal and full stroke test device 14 is started to perform a vacuum dynamic seal test on the main cylinder 10 under test. After the test is completed, the radio frequency reading and writing device 11 on the fourth station 4 writes the test data into the corresponding radio frequency card 26, and the rotating platform 7 rotates the main cylinder 10 under test to the fifth station 5.

[0036] 5) Sub-bowl sealing test: After the sensor on the fifth station 5 senses the main cylinder 10 under test, the sub-bowl sealing test device 15 is started to test the sealing performance of the sub-bowl of the main cylinder 10 under test. After the test is completed, the radio frequency reading and writing device 11 on the fifth station 5 writes the test data into the corresponding radio frequency card 26, and the rotating platform 7 rotates the main cylinder 10 under test to the sixth station 6.

[0037] 6) Laser marking: After the sensor on the sixth station 6 senses the main cylinder 10 to be tested, the radio frequency reading and writing device 11 on the sixth station 6 reads the corresponding radio frequency card 26 information, generates a QR code, starts the laser marking machine 16, and laser marks the QR code on the surface of the main cylinder 10 to be tested. The rotating platform 7 rotates the main cylinder 10 to be tested to the first station 1.

[0038] 7) Qualification judgment: After the sensor on the first station 1 senses the master cylinder 10 under test, it reads the information of the radio frequency card 26 through the radio frequency reading and writing device 11 on the first station 1 and judges the qualification of the master cylinder 10 under test. If the master cylinder 10 under test is qualified, the green light will be lit. If the master cylinder 10 under test is unqualified, an alarm signal will be issued. After the judgment is completed, the operator removes the master cylinder 10 under test from the master cylinder positioning seat 9 of the first station 1 for subsequent processing.

[0039] It is understood that, for those skilled in the art, any equivalent substitutions or modifications to the technical solutions and inventive concepts of this invention should fall within the scope of protection of the appended claims.

Claims

1. A six-station testing device for brake master cylinders, characterized in that: The test platform (8) is rotatably mounted on a rotating platform (7). The rotating platform (7) is provided with a first station (1), a second station (2), a third station (3), a fourth station (4), a fifth station (5), and a sixth station (6) arranged in sequence along the circumferential direction. Each station is provided with a main cylinder positioning seat (9) for placing the main cylinder (10) under test and a sensor for sensing the main cylinder (10) under test. A radio frequency card (26) is set next to each main cylinder positioning seat (9). A radio frequency reading and writing device (11) is set at the position corresponding to the radio frequency card (26) at each station for reading and writing the test data of the main cylinder (10) under test to the radio frequency card (26). The second station (2) is provided with a first piston testing device (12) for detecting the first piston stroke of the main cylinder (10) under test. The third station (3) is provided with a static seal and empty stroke testing device (12). 13), used to perform static sealing stroke test on the main cylinder (10) under test; the fourth station (4) is equipped with a dynamic sealing and full stroke test device (14), used to perform vacuum dynamic sealing test on the main cylinder (10) under test; the fifth station (5) is equipped with a secondary leather cup sealing test device (15), used to detect the secondary leather cup sealing performance of the main cylinder (10) under test; the sixth station (6) is equipped with a laser marking machine (16), which communicates with the radio frequency reading and writing device (11) to obtain the test information of the main cylinder (10) under test and generates a QR code, which is engraved on the surface of the main cylinder (10) under test by the laser marking machine (16); the sensor controls the operation of the rotating platform (7), the first piston test device (12), the static sealing and empty stroke test device (13), the dynamic sealing and full stroke test device (14), the secondary leather cup sealing test device (15) and the laser marking machine (16) through the signal; The main cylinder positioning seat (9) has a through hole (17) in the center. The first piston testing device (12) includes a piston push rod located below the master cylinder positioning seat (9), the piston push rod passing through the through hole (17) to realize the first piston stroke test of the master cylinder (10) to be tested; The static seal and no-stroke test device (13), the dynamic seal and full-stroke test device (14), and the auxiliary cup seal test device (15) all include a main cylinder push stroke guide rod (18), a cylinder body clamping device (19), and a sealing element (20). The main cylinder push stroke guide rod (18) passes through the through hole (17) and is used to lift the main cylinder (10) to be tested. The cylinder body clamping device (19) is used to clamp the main cylinder (10) to be tested. The sealing element (20) is used to seal the main cylinder (10) to be tested.

2. The six-station testing equipment for the brake master cylinder according to claim 1, characterized in that: The main cylinder propulsion stroke guide rod (18) is driven to rise and fall by a servo electric cylinder (21), which is fixed below the test platform (8) by a clamping device (22).

3. The six-station testing equipment for the brake master cylinder according to claim 1, characterized in that: The cylinder pressing device (19) is driven to lift and lower by the pressing cylinder (23).

4. The six-station testing equipment for the brake master cylinder according to claim 1, characterized in that: The sealing element (20) is driven to extend and retract by the sealing element pushing device (24), which is mounted on the sealing element fixing device (25).

5. The six-station testing equipment for the brake master cylinder according to claim 1, characterized in that: The rotating platform (7) is driven to rotate by a power-off self-locking stepper motor, and the rotating platform (7) rotates one-sixth of a revolution each time.

6. A detection method using the detection equipment of claim 1, characterized in that: Includes the following steps: 1) Placement of the main cylinder: Place the main cylinder (10) to be tested on the first station (1). After the sensor on the first station (1) senses the main cylinder (10) to be tested, it controls the rotating platform (7) to rotate the main cylinder (10) to the second station (2). 2) First piston stroke detection: After the sensor on the second station (2) senses the master cylinder (10) under test, the first piston test device (12) is started to detect the first piston stroke of the master cylinder (10) under test. After the detection is completed, the radio frequency reading and writing device (11) on the second station (2) writes the test data into the corresponding radio frequency card (26), and the rotating platform (7) rotates the master cylinder (10) under test to the third station (3). 3) Static sealing and no-stroke detection: After the sensor on the third station (3) senses the main cylinder (10) under test, the static sealing and no-stroke test device (13) is started to perform a stroke test under static sealing on the main cylinder (10) under test. After the test is completed, the radio frequency reading and writing device (11) on the third station (3) writes the test data into the corresponding radio frequency card (26), and the rotating platform (7) rotates the main cylinder (10) under test to the fourth station (4). 4) Dynamic sealing and full stroke test: After the sensor on the fourth station (4) senses the main cylinder (10) under test, the dynamic sealing and full stroke test device (14) is started to perform a vacuum dynamic sealing test on the main cylinder (10) under test. After the test is completed, the radio frequency reading and writing device (11) on the fourth station (4) writes the test data into the corresponding radio frequency card (26), and the rotating platform (7) rotates the main cylinder (10) under test to the fifth station (5). 5) Sub-bowl sealing test: After the sensor on the fifth station (5) senses the main cylinder (10) under test, the sub-bowl sealing test device (15) is started to test the sub-bowl sealing performance of the main cylinder (10) under test. After the test is completed, the radio frequency reading and writing device (11) on the fifth station (5) writes the test data into the corresponding radio frequency card (26), and the rotating platform (7) rotates the main cylinder (10) under test to the sixth station (6). 6) Laser marking: After the sensor on the sixth station (6) senses the main cylinder (10) to be tested, the radio frequency reading and writing device (11) on the sixth station (6) reads the corresponding radio frequency card (26) information, generates a QR code, starts the laser marking machine (16), laser marks the QR code on the surface of the main cylinder (10) to be tested, and the rotating platform (7) rotates the main cylinder (10) to be tested to the first station (1). 7) Qualification judgment: After the sensor on the first station (1) senses the master cylinder (10) to be tested, it reads the information of the radio frequency card (26) through the radio frequency reading and writing device (11) on the first station (1) and judges the qualification of the master cylinder (10) to be tested. After the judgment is completed, the master cylinder (10) to be tested is removed from the master cylinder positioning seat (9) on the first station (1).

7. The six-position detection method for the brake master cylinder according to claim 6, characterized in that: In step 7), if the test master cylinder (10) is qualified, a green light will be lit; if the test master cylinder (10) is unqualified, an alarm signal will be issued.

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