Automatic bearing airtightness testing device

Abstract

This utility model relates to an automatic bearing airtightness testing device, which includes a bearing platform, an airtightness testing device, a sliding platform, and a discharge track. The bearing platform includes a bearing unloading station and a bearing seal testing station. The airtightness testing device includes a first fixed seat, a second fixed seat, a sealing sleeve, a lifting sliding seat, and a lifting cylinder. Vertical posts are installed at the top of both the first and second fixed seats. A suspension bracket is fixed to the top of the posts and connected to a vertical bearing guide rod. A bearing clearance is left between the bottom end of the bearing guide rod and the bearing unloading station. The lifting cylinder drives the lifting sliding seat to slide relative to the posts. When the sealing sleeve below the lifting sliding seat cooperates with the bearing seal testing station, a testing chamber is formed. The sliding platform includes a reciprocating servo slide, and two sets of electric grippers are fixed above the servo slide. This achieves alternating transport of bearings from the bearing unloading station to the bearing seal testing station and the discharge track, with fully automated seal testing throughout the process, making the process simple and efficient.

Description

Technical Field

[0001] The utility model relates to a bearing detection device, specifically an automatic detection device for bearing air tightness. Background Art

[0002] Bearing air tightness detection is a relatively important link in the existing bearing production process. Bearing sealing performance is the key to ensuring normal operation of bearings under different working conditions and prolonging their service life. The existing air tightness detection methods mainly adopt the pressure method: placing a bearing in a sealed cavity, charging air and maintaining pressure, observing the gas leakage during the pressure holding period. If the leakage pressure is within the allowable range, the bearing is qualified; otherwise, it is unqualified. Some automatic detection devices for bearing air tightness are disclosed in the prior art. For example, in the Chinese patent document with the authorization announcement number CN210774563U, the authorization announcement date is June 16, 2020, and the utility model titled "an automatic air tightness detection device for sealed bearings", it discloses that automatic transfer of sealed bearings for detection is realized through a rotatable column, a liftable connecting rod and a clamping jaw. Although this structure can realize automatic detection of bearing air tightness, the process is relatively complicated and not simplified, the waiting cycle for bearing feeding, detection and discharging is long, and the overall efficiency is not high. Therefore, it is necessary to improve the existing bearing air tightness detection devices. Summary of the Invention

[0003] To overcome the above drawbacks, the purpose of the utility model is to provide an automatic bearing air tightness detection device for the art, so as to solve the technical problems of the existing similar detection devices that the detection process is relatively complicated, the waiting cycle for bearing feeding, detection and discharging is long, and the efficiency is not high. The purpose of the utility model is achieved through the following technical solutions.

[0004] An automatic bearing airtightness testing device is disclosed. The device includes a platform support, a bearing platform fixed to the platform support, an airtightness testing device, a sliding platform, and a discharge track. The bearing platform comprises a bearing unloading station and a bearing seal testing station located on the same horizontal plane. The airtightness testing device includes a first fixed seat, a second fixed seat, a sealing sleeve, a lifting sliding seat, and a lifting cylinder. Vertical posts are installed at the top of both the first and second fixed seats. A suspension bracket is fixedly connected to the top of the post of the first fixed seat. A vertical bearing guide rod is suspended from the suspension bracket. The bottom end of the bearing guide rod is located above the bearing unloading station, and a gap of at least one bearing thickness and less than two bearing thicknesses is left between the bottom end of the bearing guide rod and the bearing unloading station. The lifting cylinder is fixed to the posts of the first and second fixed seats. The top end of the lifting cylinder... A lifting sliding seat is fixedly connected to the first fixed seat and the second fixed seat. The lifting sliding seat slides relative to the uprights of the first fixed seat and the second fixed seat. The sealing sleeve is fixedly connected to the bottom of the lifting sliding seat. When the sealing sleeve is pushed into place by the lifting cylinder, it cooperates with the bearing sealing test position of the bearing platform to form a test chamber for testing the bearing sealing performance. An air inlet pipe for air intake into the test chamber is connected to the outside of the sealing sleeve. The bottom of the bearing sealing test position is provided with an exhaust hole for the discharge of bearing leakage pressure in the test chamber. The sliding platform includes a slide rail bracket and a servo slide that slides back and forth along the slide rail bracket. Two sets of electric grippers are fixedly connected to the top of the servo slide. When the gripping position of one of the electric grippers slides between the bearing unloading position and the bearing sealing test position with the servo slide, the gripping position of the other electric gripper slides between the bearing sealing test position and the bearing inlet of the discharge track with the servo slide. With the above structure, the bearing guide rod is used to realize the bearing's own weight unloading. The electric gripper realizes the bearing from the bearing unloading station to the bearing sealing test station and the discharge track. The bearing sealing test device is controlled by the lifting cylinder to realize automatic sealing test. The whole process is fully automatic and the procedure is relatively simple and efficient.

[0005] One end of the suspension bracket is provided with an elastic clamp for holding the upright, and a locking bolt is provided at the elastic clamp to clamp and fix the elastic clamp to the upright. The other end of the suspension bracket is provided with an insertion hole for vertical insertion of the bearing guide rod. The top of the bearing guide rod is provided with a limiting head, which limits the bearing guide rod to the upper part of the insertion hole after it is inserted from above. This structure makes the installation and use of the bearing guide rod more convenient, facilitating the batch loading operation of the bearings to be tested.

[0006] Above the bearing unloading station of the bearing platform, there is a guide seat that guides the bearing at the lower end of the guide rod. The guide seat contains a sensor to identify the bearing's passage. This structure ensures more accurate and reliable bearing placement along the guide rod and monitors for any bearing shortage within the guide rod, facilitating timely refilling if necessary.

[0007] The bearing inlet of the discharge track is equipped with an inclined guide seat that guides the horizontal bearings into the discharge track at an angle. This structure facilitates the accurate placement of the bearings into the discharge track.

[0008] The bearing platform has at least two bearing seal testing stations, each with a different horizontal orientation relative to the bearing unloading station. Each bearing seal testing station corresponds to a set of airtightness testing devices, and each bearing platform has an independent sliding platform on one side, with a discharge track at one end of each sliding platform. This structure enables continuous sealing testing of bearings across multiple stations, reducing waiting time for single-station testing and improving efficiency.

[0009] The bearing platform has two bearing seal testing stations horizontally symmetrically distributed relative to the bearing unloading station. Each bearing seal testing station is equipped with a set of airtightness testing devices. Discharge tracks are located on one side of both ends of the sliding platform. Two sets of electric grippers on the sliding platform alternately transport the bearing from the unloading station to the bearing seal testing stations and the discharge tracks on both sides. This structure enables dual-station bearing seal testing with high efficiency, and only one set of sliding platform is needed for bidirectional bearing gripping and transport.

[0010] This utility model has a relatively compact overall structure and can automatically realize the entire process of bearing blanking, inspection and unloading. The process is simple and can realize multi-station operation at the same time, with high efficiency. It is suitable for use as a bearing airtightness testing device for various types of bearings, or as a structural improvement of similar devices. Attached Figure Description

[0011] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0012] Figure 2 yes Figure 1 A partial planar structural diagram is shown, with a partial cross-section.

[0013] Figure 3 yes Figure 1 A schematic diagram of the working state and structure.

[0014] Figure 4 yes Figure 1 The working state of the second structure diagram.

[0015] Figure 5 yes Figure 1 A schematic diagram of the improved scheme.

[0016] Figure 6 yes Figure 1 Schematic diagram of the improved scheme two.

[0017] The numbers and names in the diagram are as follows: 1. Bearing platform, 101. Bearing unloading station, 102. Bearing sealing test station, 2. First fixed seat, 3. Second fixed seat, 4. Upright pole, 5. Suspension bracket, 6. Bearing guide rod, 601. Limit head, 7. Guide seat, 701. Sensor, 8. Lifting cylinder, 9. Mounting plate, 10. Lifting sliding seat, 11. Sealing sleeve, 12. Slide rail bracket, 13. Servo slide, 14. Electric gripper, 15. Discharge track, 16. Inclined guide seat, 17. Platform bracket, 18. Bearing. Implementation

[0018] The present invention will now be further described with reference to the accompanying drawings.

[0019] like Figures 1-4 As shown, the automatic bearing airtightness testing device includes a platform support 17, a bearing platform 1 fixed to the platform support, an airtightness testing device, a sliding platform, and a discharge track 15. The bearing platform includes a bearing unloading station 101 and a bearing sealing test station 102 located on the same horizontal plane. The airtightness testing device includes a first fixed seat 2, a second fixed seat 3, a sealing sleeve 11, a lifting sliding seat 10, and a lifting cylinder 8. The top of both the first and second fixed seats is provided with vertical uprights 4. The top of the upright of the first fixed seat is fixedly connected to a suspension bracket 5. One end of the suspension bracket is provided with an elastic clamp for clamping the upright, and a locking bolt is provided at the elastic clamp. The elastic clamp is clamped and fixed to the upright by the locking bolt. The other end of the suspension bracket is provided with an insertion hole for vertical insertion of a bearing guide rod 6. The top of the bearing guide rod is provided with a limiting head 601. After the bearing guide rod is inserted from above the insertion hole, the limiting head is limited to the upper part of the insertion hole. The bottom end of the bearing guide rod is located above the bearing unloading station, and a gap greater than or equal to the thickness of one bearing 18mm and less than the thickness of two bearings is left between the bottom end of the bearing guide rod and the bearing unloading station. Above the bearing unloading station of the bearing platform, there is a guide seat 7 to guide the bearing at the lower end of the guide rod. The guide seat is equipped with a sensor 701 to identify whether the bearing is missing material in the bearing guide rod.

[0020] The aforementioned lifting cylinder 8 is fixed to the mounting plate 9. The mounting plate is slidably connected to the uprights 4 of the first fixed seat 2 and the second fixed seat 3 and then locked in place by radial screws, which facilitates the adjustment of the installation height of the lifting cylinder. The top rod end of the lifting cylinder faces downward and is fixedly connected to the lifting sliding seat 10. The lifting sliding seat slides relative to the uprights of the first fixed seat and the second fixed seat. A sealing sleeve 11 is fixedly connected to the bottom of the lifting sliding seat. The sealing sleeve has a sealing top rod that forms a positioning seal for the inner hole of the bearing 18. When the sealing sleeve is pushed into place by the lifting cylinder, it cooperates with the bearing sealing test position 102 of the bearing platform 1 to form a test chamber for testing the bearing sealing performance. An air inlet pipe for air intake into the test chamber is connected to the outside of the sealing sleeve. An exhaust hole for venting the bearing leakage pressure in the test chamber is provided at the bottom of the bearing sealing test position. The sliding platform includes a slide rail bracket 12 and a servo slide 13 that slides back and forth along the slide rail bracket. Two sets of electric grippers 14 are fixedly connected to the top of the servo slide. As one of the electric grippers slides between the bearing unloading station 101 and the bearing seal testing station via the servo slide, the other electric gripper slides between the bearing seal testing station and the bearing inlet of the discharge track 15 via the servo slide. The bearing inlet of the discharge track is provided with a slanted guide seat 16 that guides the horizontal bearings into the discharge track at an angle.

[0021] like Figure 5 As shown, the bearing platform 1 can also be provided with multiple bearing seal test stations 102. Each bearing seal test station has a different horizontal orientation relative to the bearing unloading station 101. Each bearing seal test station is provided with a set of air tightness testing devices. Each bearing platform is provided with an independent sliding platform on one side. Each sliding platform is provided with a corresponding discharge track 15 on one side of its end.

[0022] like Figure 6 As shown, the bearing platform 1 may also be provided with two bearing seal test stations 102 that are horizontally symmetrically distributed relative to the bearing unloading station 101. Each bearing seal test station is provided with a set of air tightness detection devices. Both ends of the sliding platform are provided with discharge tracks 15. The two sets of electric grippers 14 of the sliding platform alternately transport the bearing 18 at the bearing unloading station to the bearing seal test stations and discharge tracks on both sides.

[0023] The automatic bearing airtightness testing device works as follows: the bearing 18 at the bearing guide rod 6 is unloaded by its own weight. The servo slide 13 of the sliding platform controls the sliding of two sets of electric grippers 14. When one of the electric grippers picks up the bearing at the bearing unloading station 101 on the bearing platform 1, the other electric gripper places the picked-up bearing into the bearing sealing test station 102 on the bearing platform. The bearing airtightness testing device is activated, and the lifting cylinder 8 drives the sealing sleeve 11 to press down and form a test chamber with the bearing sealing test station. Air is introduced through the air inlet pipe to pressurize the test chamber. The sealing performance of the bearing is tested by monitoring the air leakage at the exhaust port or the pressure drop in the test chamber. After the test is completed, the lifting cylinder resets, and the servo slide 13 of the sliding platform controls the sliding of two sets of electric grippers. One electric gripper picks up the tested bearing and transports it to the bearing inlet above the discharge track 15, then releases the gripper. Under the guidance of the inclined guide seat 16, the bearing automatically falls into the discharge track and rolls out. The other electric gripper transports the bearing picked up at the bearing unloading station to the bearing sealing test station to await sealing inspection. The above realizes the automatic unloading, airtightness testing, and unloading process of the bearing, which is relatively simple and efficient.

[0024] The above description is intended to illustrate the technical means of this utility model and is not intended to limit the technical scope of this utility model. Any obvious improvements or substitutions made to this utility model by those skilled in the art based on existing common knowledge also fall within the protection scope of the claims of this utility model.

Claims

1. A kind of bearing air-tightness automatic detection device, the detection device includes platform support (17), bearing platform (1) fixed to platform support, air-tightness detection device, sliding platform and discharge track (15);Its characterized in that The bearing platform (1) includes a bearing unloading station (101) and a bearing sealing test station (102) located on the same horizontal plane. The airtightness testing device includes a first fixed seat (2), a second fixed seat (3), a sealing sleeve (11), a lifting sliding seat (10), and a lifting cylinder (8). The top of the first fixed seat and the second fixed seat are both provided with vertical uprights (4). The top of the upright of the first fixed seat is fixedly connected to a suspension bracket (5). The suspension bracket is suspended and connected to a vertical bearing guide rod (6). The bottom end of the bearing guide rod is located above the bearing unloading station, and there is a gap between the bottom end of the bearing guide rod and the bearing unloading station that is greater than or equal to the thickness of one bearing (18) and less than the thickness of two bearings. The lifting cylinder is fixed to the uprights of the first fixed seat and the second fixed seat. The top end of the lifting cylinder is fixedly connected to the lifting sliding seat. The seat slides relative to the uprights of the first fixed seat and the second fixed seat. The sealing sleeve is fixedly connected to the bottom of the lifting sliding seat. When the sealing sleeve is pushed into place by the lifting cylinder, it cooperates with the bearing sealing test position of the bearing platform to form a test chamber for testing the bearing sealing performance. The sealing sleeve is connected to an air inlet pipe for air intake in the test chamber. The bottom of the bearing sealing test position is provided with an exhaust hole for the bearing leakage pressure in the test chamber to be discharged. The sliding platform includes a slide rail bracket (12) and a servo slide (13) that slides back and forth along the slide rail bracket. Two sets of electric grippers (14) are fixedly connected to the top of the servo slide. When the gripping position of one of the electric grippers slides between the bearing unloading position and the bearing sealing test position with the servo slide, the gripping position of the other electric gripper slides between the bearing sealing test position and the bearing inlet of the discharge track with the servo slide.

2. The apparatus of claim 1, wherein One end of the suspension bracket (5) is provided with an elastic clamp for clamping the upright (4), and a locking bolt is provided at the elastic clamp. The elastic clamp is clamped and fixed to the upright by the locking bolt. The other end of the suspension bracket is provided with an insertion hole adapted to the vertical insertion of the bearing guide rod (6). The top of the bearing guide rod is provided with a limiting head (601). After the bearing guide rod is inserted from above the insertion hole, the limiting head is limited to the upper part of the insertion hole.

3. The apparatus of claim 1 wherein Above the bearing unloading station (101) of the bearing platform (1), there is a guide seat (7) that guides the bearing (18) at the lower end of the bearing guide rod (6). The guide seat is equipped with a sensor (701) that identifies the passage of the bearing.

4. The apparatus of claim 1 wherein The discharge track (15) is provided with a slanted guide seat (16) at the bearing inlet to guide the horizontal bearing (18) into the discharge track.

5. The automatic bearing airtightness testing device according to claim 1, characterized in that... The bearing platform (1) is provided with at least two bearing sealing test stations (102). Each bearing sealing test station has a different horizontal orientation relative to the bearing unloading station (101). Each bearing sealing test station is provided with a set of air tightness detection devices. Each bearing sealing test station is located on one side of the bearing platform and is provided with an independent sliding platform. Each sliding platform is provided with a discharge track (15) on one side of its end.

6. The apparatus of claim 1 wherein The bearing platform (1) is provided with two bearing sealing test stations (102) that are horizontally symmetrically distributed relative to the bearing unloading station (101). Each bearing sealing test station is provided with a set of air tightness detection devices. The sliding platform is provided with discharge tracks (15) on one side of both ends. The two sets of electric grippers (14) of the sliding platform alternately transport the bearing (18) at the bearing unloading station to the bearing sealing test stations and discharge tracks on both sides.

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