An ABS brake oil seal sealing rod air tightness detection structure

Abstract

The application discloses an ABS brake oil seal sealing rod air tightness detection structure and belongs to the technical field of oil seal air tightness detection. Mainly including machine table, and bearing is installed on the rotating disc of machine table, the rotating disc is connected with motor, the side of rotating disc is provided with feeding mechanism, the feeding mechanism is composed of double shaft driving structure and clamping jaw installed on the double shaft driving structure, four groups of positioning mechanisms are installed on the rotating disc, the positioning mechanism has the bottom plate fixed on the rotating disc and the base plate fixed on the bottom plate, the bearing is installed with the middle disc at the center of the base plate, the arc groove is formed in the middle disc, the cover plate is installed on the base plate, three groups of clamping blocks are slidably installed on the cover plate, the guide rod matched with the arc groove is fixed on the clamping block, the air tightness detection mechanism is installed on the machine table, the air tightness detection mechanism has the plugging head and the air nozzle arranged below the rotating disc, the air nozzle is connected with the air pump. The ABS brake oil seal sealing rod air tightness detection structure can solve the problem that the work station is inconvenient for positioning sealing rods with different sizes.

Description

Technical Field

[0001] This application relates to the field of oil seal air tightness testing technology, specifically to an ABS brake oil seal sealing rod air tightness testing structure. Background Technology

[0002] The ABS brake fluid seal rod is a key sealing component in the anti-lock braking system. It is mainly used to maintain the sealing of the drive shaft, wheel hub bearing or sensor area under dynamic conditions, prevent grease leakage and external contaminant intrusion, and ensure stable ABS signal transmission and braking safety.

[0003] In the production of sealing rods, in order to ensure the precision of the connection between the oil seal and the sealing rod, it is usually necessary to test the air tightness of the sealing rod to ensure its sealing performance. Existing air tightness testing devices mainly use a worktable on an indexing plate to clamp the sealing rod, and use a pressure sealing column and an air pump under the worktable to inflate the sealing rod with air. By monitoring the change in air pressure, the air tightness of the sealing rod can be detected.

[0004] However, in actual sealing rod air tightness testing, sealing rods need to be used in different scenarios, so they have different sizes. However, the existing sealing rod testing station is usually fixed, which requires the station to be replaced when positioning and fixing sealing rods of different sizes. This makes the loading of sealing rods inconvenient and has a certain impact on the air tightness testing efficiency. Therefore, it is necessary to provide an ABS brake oil seal sealing rod air tightness testing structure to solve the above problems.

[0005] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Utility Model Content

[0006] Based on the aforementioned problems in the existing technology, the problem to be solved by this application is to provide an ABS brake oil seal sealing rod air tightness detection structure to solve the problem of inconvenience in positioning sealing rods of different sizes on the workstation.

[0007] To achieve the above objectives, this application provides the following technical solution: an airtightness testing structure for an ABS brake oil seal rod, comprising a machine base and a turntable with bearings mounted on the machine base. The turntable is connected to a motor, and a feeding mechanism is provided on the side of the turntable. The feeding mechanism consists of a dual-axis drive structure and grippers mounted on the dual-axis drive structure. Four sets of positioning mechanisms are mounted on the turntable. The positioning mechanisms are used for positioning and clamping the seal rod. Each positioning mechanism has a base plate fixed to the turntable and a clamping plate fixed to the... The base plate has a base plate on which a central plate is mounted with a bearing. An arc groove is formed on the central plate. A cover plate is mounted on the base plate. Three sets of clamping blocks are slidably mounted on the cover plate. Guide rods adapted to the arc groove are fixed on the clamping blocks. An airtightness detection mechanism is mounted on the machine base. The airtightness detection mechanism has a sealing head and an air nozzle located below the turntable. The air nozzle is connected to an air pump. Each set of clamping blocks is adapted to move synchronously towards or away from the center of the central plate under the rotation of the central plate to position and clamp the sealing rod.

[0008] Preferably, a sliding groove is provided between the substrate and the cover plate, and three sets of arc plates are provided on the outer side of the substrate. A connecting rod is fixedly installed between the arc plates and the middle plate, and the connecting rod is slidably installed in the sliding groove.

[0009] Preferably, a spring is installed in the groove, and the end of the spring is fixedly connected to the connecting rod.

[0010] Preferably, the airtightness testing mechanism further includes a column fixed to the machine base and a dual-drive unit installed on the column. The dual-drive unit consists of a screw drive assembly and a cylinder disposed on the screw drive assembly. The screw drive assembly has a movable part, the cylinder is fixed on the movable part, the sealing head is installed on the output end of the cylinder, a drive part is fixed at the bottom end of the movable part, the sealing head is slidably installed through the center of the drive part, the top side of the arc plate is inclined, the edge of the drive part is provided with a toothed plate adapted to the arc plate, and the arc plate and the toothed plate are wedge-shaped connected.

[0011] Preferably, the end of the sealing head is provided with a sealing sheet made of silicone material, and the bottom horizontal position of the sealing head is higher than the lowest horizontal position of the toothed plate.

[0012] Preferably, the bottom of the turntable is provided with a vent hole, and the vent hole is connected to the center of the positioning mechanism.

[0013] Preferably, the outer wall of the air nozzle is provided with a silicone body, and the end of the air nozzle is adapted to the vent hole.

[0014] The beneficial effects of this application are as follows: The ABS brake oil seal sealing rod air tightness testing structure provided by this application, through the driving action of the screw transmission group, causes the driving part to move closer to the positioning mechanism, and under the wedge-shaped cooperation of the toothed plate and the arc plate, drives the middle plate to rotate, and under the action of the arc groove, drives the three sets of clamping blocks to move closer to the sealing rod synchronously, so as to position and fix the sealing rod, thereby achieving the purpose of positioning and fixing sealing rods of different sizes, and solving the problem that it is inconvenient for the workstation to position sealing rods of different sizes.

[0015] In addition to the purposes, features, and advantages described above, this application has other purposes, features, and advantages. A further detailed description of this application will be provided below with reference to the figures. Attached Figure Description

[0016] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments and descriptions of this application are used to explain this application and do not constitute an undue limitation of this application. In the drawings:

[0017] Figure 1 This is an overall schematic diagram of an ABS brake oil seal sealing rod air tightness testing structure according to this application;

[0018] Figure 2 for Figure 1 A cross-sectional view of the transfer plate;

[0019] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0020] Figure 4 for Figure 2 Enlarged structural diagram at point B;

[0021] The following are the labeling elements in the figure:

[0022] 1. Machine base; 11. Turntable; 12. Material bin; 2. Air tightness detection mechanism; 21. Column; 22. Dual drive unit; 23. Drive unit; 231. Toothed plate; 24. Air nozzle; 241. Silicone body; 25. Sealing head; 251. Sealing sheet; 3. Feeding mechanism; 31. Dual-axis drive structure; 32. Gripper; 4. Positioning mechanism; 41. Base plate; 42. Base plate; 421. Cover plate; 422. Slide groove; 43. Clamping block; 44. Middle plate; 441. Arc groove; 45. Arc plate; 46. Spring. Detailed Implementation

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0024] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0025] like Figures 1-2 As shown, this application provides an ABS brake oil seal sealing rod air tightness testing structure, including a machine base 1 and a turntable 11 with bearings mounted on the machine base 1. The turntable 11 is connected to a motor (not shown in the figure), and a feeding mechanism 3 is provided on the side of the turntable 11, and a material box 12 is provided on the side of the feeding mechanism 3.

[0026] The feeding mechanism 3 consists of a dual-axis drive structure 31 and grippers 32 mounted on the dual-head drive mechanism. The dual-axis drive structure 31 is adapted to drive the grippers 32 to move along the YZ axis direction (e.g., Figure 2 (As shown in the upper right corner of the text), and the dual-axis drive structure 31 is existing technology. For its specific structure and principle, please refer to the existing technology. It will not be elaborated on here.

[0027] like Figures 2-4 As shown, four sets of positioning mechanisms 4 are installed on the turntable 11. The positioning mechanism 4 is used for positioning and clamping the sealing rod. The positioning mechanism 4 includes a base plate 41 fixed on the turntable 11 and a base plate 42 fixed on the base plate 41. A middle plate 44 is mounted on the center of the base plate 42. Three sets of arc grooves 441 are opened on the middle plate 44.

[0028] A cover plate 421 is mounted on the substrate 42. Three sets of clamping blocks 43 are slidably mounted on the cover plate 421. The clamping blocks 43 are adapted to move toward the center of the cover plate 421. A guide rod (not shown in the figure) adapted to the arc groove 441 is fixed on the clamping block 43. When the middle plate 44 rotates, the inner wall of the arc groove 441 presses the guide rod and drives the three sets of clamping blocks 43 to move closer to or away from the center of the cover plate 421 simultaneously.

[0029] A sliding groove 422 is provided between the base plate 42 and the cover plate 421. Three sets of arc plates 45 are provided on the outer side of the base plate 42. The arc plates 45 are connected to the middle plate 44 with connecting rods. The connecting rods on each set of arc plates 45 are slidably installed in the sliding groove 422. A spring 46 is installed in the sliding groove 422. The end of the spring 46 is fixedly connected to the connecting rod of the arc plate 45.

[0030] When the arc plate 45 is subjected to external force, the arc plate 45 drives the middle plate 44 to rotate, and cooperates with the connecting rod to squeeze the spring 46. Through the arc groove 441 on the middle plate 44, the clamping block 43 is driven to move towards the center of the cover plate 421. After the external force on the arc plate 45 disappears, the connecting rod is pushed by the elastic force of the spring 46, and the arc plate 45 is reset at the same time, and the clamping block 43 is returned to its original position at the same time.

[0031] Meanwhile, an airtightness testing mechanism 2 is installed on the machine base 1. The airtightness testing mechanism 2 also includes a column 21 fixed on the machine base 1, and a dual-drive unit 22 (not shown in the figure, but can be referenced) installed on the column 21. Figure 2 (See enlarged view of the structure in the upper right corner). The dual-drive unit 22 consists of a screw drive assembly and a cylinder fixed on the screw drive assembly. The screw drive assembly has a movable part, and the cylinder is fixed on the movable part.

[0032] In this application, the dual drive unit 22 and the screw drive assembly are both prior art. For their specific structure and principle, please refer to the prior art. They will not be described in detail here.

[0033] The bottom end of the movable part of the screw drive assembly is connected to the drive part 23. A sealing head 25 is slidably installed at the center of the drive part 23 and is installed on the cylinder output end. The end of the sealing head 25 is provided with a sealing sheet 251 made of silicone material, and the bottom horizontal position of the sealing head 25 is higher than the lowest horizontal position of the toothed plate 231.

[0034] Furthermore, the top side of the arc plate 45 is set with an inclined surface, and the edge of the drive part 23 is provided with a toothed plate 231 that is adapted to the arc plate 45. The toothed plate 231 and the arc plate 45 are connected in a wedge shape.

[0035] An air pump is provided inside the machine base 1, and an air nozzle 24 is installed at the output end of the air pump. The air nozzle 24 is located at the bottom of the turntable 11, and the bottom of the turntable 11 is provided with a vent hole that is compatible with the air nozzle 24. A silicone body 241 for sealing the connection between the air nozzle 24 and the vent hole is fitted on the air nozzle 24. The vent hole is connected to the center of the positioning mechanism 4. The air pump is adapted to move closer to the turntable 11 under external driving force.

[0036] When the sealing rod is tested, the dual-axis drive structure 31 first drives the gripper 32 to load the sealing rod in the material box 12 into the positioning mechanism 4 on the turntable 11. Then the turntable 11 rotates and transfers the sealing rod to the airtightness testing mechanism 2.

[0037] After the sealing rod reaches the airtightness testing mechanism 2, the screw drive assembly first drives the drive unit 23 to approach the positioning mechanism 4. During this process, the toothed plate 231 of the drive unit 23 abuts against the arc plate 45 and forms a wedge fit. Under the continuous pushing force of the screw drive assembly, the arc plate 45 is moved by external force and indirectly drives the middle plate 44 to rotate. At the same time, in conjunction with the action of the arc groove 441, the three sets of clamping blocks 43 are driven to move towards the center of the cover plate 421 in sync to position and fix the sealing rod. After the sealing rod is positioned, the cylinder drives the sealing head 25 to approach the sealing rod, and the sealing plate 251 seals the top of the sealing rod.

[0038] Finally, under the action of external force, the air pump moves closer to the bottom of the turntable 11, and under the action of the silicone body 241, it first seals the edge of the vent hole by contact, and then the air nozzle 24 is connected to the vent hole to complete the airtightness test of the sealing rod.

[0039] In summary, the drive unit 23 moves closer to the positioning mechanism 4 through the driving action of the screw drive assembly. Under the wedge-shaped cooperation of the toothed plate 231 and the arc plate 45, the middle plate 44 is driven to rotate. Under the action of the arc groove 441, the three sets of clamping blocks 43 are driven to move closer to the sealing rod synchronously to position and fix the sealing rod. This achieves the purpose of positioning and fixing sealing rods of different sizes and solves the problem that it is inconvenient to position sealing rods of different sizes on the worktable.

[0040] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations are possible for those skilled in the art. Any improvements and modifications made within the spirit and principles of this application, without departing from its principles, should also be considered within the scope of protection of this application.

Claims

1. An air tightness testing structure for an ABS brake oil seal rod, comprising a machine base (1) and a turntable (11) with bearings mounted on the machine base (1), the turntable (11) being connected to a motor, and a feeding mechanism (3) being provided on the side of the turntable (11), the feeding mechanism (3) being composed of a dual-axis drive structure (31) and grippers (32) mounted on the dual-axis drive structure (31); The turntable (11) is equipped with four sets of positioning mechanisms (4), which are used for positioning and clamping the sealing rod. The feature is that: The positioning mechanism (4) has a base plate (41) fixed on the turntable (11) and a base plate (42) fixed on the base plate (41). A middle plate (44) is mounted on the center of the base plate (42) and an arc groove (441) is provided on the middle plate (44). A cover plate (421) is mounted on the substrate (42), and three sets of clamping blocks (43) are slidably mounted on the cover plate (421). Guide rods adapted to the arc groove (441) are fixed on the clamping blocks (43). An airtightness testing mechanism (2) is installed on the machine (1). The airtightness testing mechanism (2) has a sealing head (25) and an air nozzle (24) located below the turntable (11). The air nozzle (24) is connected to an air pump. Wherein: each set of clamping blocks (43) is adapted to move synchronously toward or away from the center of the middle plate (44) under the rotation of the middle plate (44) in order to position and clamp the sealing rod.

2. The airtightness testing structure for an ABS brake oil seal rod according to claim 1, characterized in that: A groove (422) is provided between the substrate (42) and the cover plate (421). Three sets of arc plates (45) are provided on the outer side of the substrate (42). A connecting rod is fixedly installed between the arc plate (45) and the middle plate (44). The connecting rod is slidably installed in the groove (422).

3. The airtightness testing structure for an ABS brake oil seal rod according to claim 2, characterized in that: A spring (46) is installed inside the groove (422), and the end of the spring (46) is fixedly connected to the connecting rod.

4. The airtightness testing structure for an ABS brake oil seal rod according to claim 3, characterized in that: The airtightness testing mechanism (2) also includes a column (21) fixed on the machine base (1) and a dual drive unit (22) installed on the column (21). The dual drive unit (22) consists of a screw drive assembly and a cylinder set on the screw drive assembly. The screw drive assembly has a movable part, the cylinder is fixed on the movable part, and the sealing head (25) is installed on the cylinder output end. The bottom end of the active part is fixed with a driving part (23), the sealing head (25) is slidably installed in the center of the driving part (23), the top side of the arc plate (45) is set with an inclined surface, the edge of the driving part (23) is provided with a toothed plate (231) adapted to the arc plate (45), and the arc plate (45) and the toothed plate (231) are wedge-shaped connected.

5. The airtightness testing structure for an ABS brake oil seal rod according to claim 4, characterized in that: The sealing head (25) is provided with a sealing sheet (251) made of silicone material at its end, and the bottom horizontal position of the sealing head (25) is higher than the lowest horizontal position of the toothed plate (231).

6. The airtightness testing structure for an ABS brake oil seal rod according to claim 5, characterized in that: The turntable (11) has a ventilation hole at its bottom, and the ventilation hole is connected to the center of the positioning mechanism (4).

7. The airtightness testing structure for an ABS brake oil seal rod according to claim 6, characterized in that: The outer wall of the air nozzle (24) is provided with a silicone body (241), and the end of the air nozzle (24) is adapted to the air vent.

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