Flexible secondary cut device for rotary oil seal

Abstract

The utility model discloses a flexible auxiliary incision device of rotary oil seal, its characterized in that, including the rotary device of drive oil seal rotation, be used for cutting the incision cutter of oil seal to oil seal, and the compression device of compression on oil seal, when using, rotary device drive oil seal rotation, incision cutter cut to oil seal, and the compression device forms the compression force of axial to oil seal, the compression device includes at least two symmetrical installation frame, and the guide column of sliding along vertical direction is established on the installation frame, and the bottom end of guide column is equipped with a compression piece, and the compression piece is pressed and connected with oil seal, and a spring is sleeved on the guide column, and one end of spring is connected with the installation frame, and the other end is connected with the compression piece, the utility model discloses have simple structure, convenient operation, positioning reliable, cutting quality higher advantage, be applicable to the cutting process demand of various large -size rotary oil seal.

Description

Technical Field

[0001] This utility model belongs to the field of oil seal cutting technology, specifically relating to a flexible auxiliary cutting device for a rotary oil seal. Background Technology

[0002] Rotary oil seals, as key components in sealing systems, are widely used in automobiles, construction machinery, hydraulic equipment, and various rotating shaft components. Their main function is to prevent lubricating oil leakage and prevent external impurities from entering the system. With the increasing demands for sealing performance in industry, the size, materials, and machining precision of rotary oil seals are constantly evolving and improving. In particular, large-size oil seals are being used more and more frequently in heavy machinery and special equipment, making efficient and high-quality machining of these seals a significant technical challenge for the industry.

[0003] Currently, most oil seal cutting processes employ a motor-driven rotary fixture to cut the oil seal in a fixed position. However, for larger diameter oil seals, the large moment of inertia during rotation leads to instability in the vacuum adsorption state, even causing axial runout or offset. This not only affects the positioning accuracy of the cutting tool but can also cause uneven, skewed, or torn cut surfaces, thus reducing product yield and increasing rework costs. Existing technologies lack an effective solution specifically addressing the axial stability problem during the cutting of large-size oil seals, especially under limited vacuum adsorption conditions, making it difficult to achieve efficient and stable auxiliary clamping.

[0004] Therefore, designing an auxiliary clamping device that is simple in structure, reliable in clamping, and suitable for large-size rotary oil seals to suppress axial runout caused by inertia during rotation and improve cutting quality is an urgent technical problem that needs to be solved. Utility Model Content

[0005] To address the aforementioned issues, this invention provides a flexible auxiliary cutting device for rotary oil seals, which features simple structure, convenient operation, reliable positioning, and high cutting quality, making it suitable for the cutting process requirements of various large-size rotary oil seals.

[0006] The technical solution provided by this utility model is as follows:

[0007] A flexible auxiliary cutting device for a rotary oil seal, characterized in that it includes a rotating device for driving the oil seal to rotate, a cutting knife for cutting the oil seal, and a pressing device pressed onto the oil seal.

[0008] In use, the rotating device drives the oil seal to rotate, the cutting knife cuts the oil seal, and the clamping device forms an axial clamping force on the oil seal;

[0009] The clamping device includes at least two symmetrically arranged mounting brackets. Each mounting bracket has a guide post that slides vertically. The bottom end of each guide post has a pressure member that presses against an oil seal. A spring is fitted onto each guide post, with one end of the spring connected to the mounting bracket and the other end connected to the pressure member.

[0010] The flexible auxiliary cutting device for the rotary oil seal according to the claim is characterized in that the rotating device includes a motor and a rotating shaft, the rotating shaft is rotatably mounted on the mounting plate, the motor and the rotating shaft are driven by a synchronous belt, and the rotating shaft is provided with a chuck for fixing the oil seal.

[0011] In some implementations, the chuck is a vacuum adsorption chuck.

[0012] In some implementations, the press-fit element is crimped onto the edge of the oil seal.

[0013] In some embodiments, the pressure member includes a U-shaped block, and a pressure roller is rotatably connected inside the U-shaped block via a rotating shaft. The pressure roller is pressed against an oil seal.

[0014] In some embodiments, the pressure member includes a locking block with a ball embedded in its bottom, the ball being pressed against an oil seal.

[0015] In some implementations, a limiting block is provided at the top of the guide post.

[0016] In summary, the beneficial effects of this utility model are as follows:

[0017] This invention introduces a clamping device at both ends during the rotation of the oil seal. The spring preload stabilizes and presses the edge of the oil seal, effectively counteracting the axial force generated by rotational inertia. This prevents the oil seal from jumping or shifting due to vacuum instability, thereby ensuring a constant relative position between the cutting blade and the cutting area, and significantly improving cutting accuracy and product consistency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a cross-sectional structural diagram of another embodiment of the pressure component.

[0020] The attached figures are labeled as follows:

[0021] 1. Oil seal; 2. Cutting knife; 3. Mounting bracket; 4. Guide column; 5. Spring; 6. Motor; 7. Shaft; 8. Mounting plate; 9. Synchronous belt; 10. Chuck; 11. U-block; 12. Pressure roller; 13. Clamping block; 14. Ball bearing; 15. Limit block. Detailed Implementation

[0022] To enhance understanding of this utility model, the present utility model will be further described in detail below with reference to the embodiments and accompanying drawings. These embodiments are only used to explain the present utility model and do not constitute a limitation on the scope of protection of the present utility model.

[0023] like Figure 1-2 As shown, this application provides a flexible auxiliary cutting device for a rotary oil seal, including a rotating device, a cutting blade 2, and a clamping device, wherein the cutting blade 2 is fixed on a cutting machine (not shown in the figure). The device is mainly used to cut rotary oil seals 1 with a large diameter to solve the problem of unstable vacuum adsorption caused by the large inertia of the oil seal when rotating at high speed, thereby improving the cutting accuracy and stability.

[0024] The rotating device is used to drive the oil seal 1 to rotate at high speed around its central axis. Specifically, it includes a motor 6, a synchronous belt 9, a rotating shaft 7, and a mounting plate 8. The motor 6 is fixedly mounted on a frame (not shown in the figure), and its output end is connected to the rotating shaft 7 via the synchronous belt 9. The rotating shaft 7 is vertically mounted and rotatably mounted on the mounting plate 8 via a bearing assembly. One end of the rotating shaft 7 is connected to a chuck 10 for fixing the oil seal 1.

[0025] Preferably, the chuck 10 is a vacuum adsorption chuck, which can tightly adsorb the oil seal 1 onto the chuck surface through negative pressure to achieve preliminary positioning and clamping.

[0026] To prevent vacuum instability and axial runout of the oil seal 1 due to its large rotational inertia during high-speed rotation, this invention provides a clamping device on one side of the oil seal 1. The clamping device is moved by an external motion mechanism (not shown in the figure). The clamping device includes two symmetrically arranged mounting brackets 3, respectively located on both sides of the oil seal 1. Each mounting bracket 3 has a guide post 4, which can slide vertically up and down. A pressure member is connected to the lower end of the guide post 4 for pressing against the edge of the oil seal 1. A spring 5 is fitted onto the guide post 4, with one end abutting against the mounting bracket 3 and the other end abutting against the pressure member, providing axial preload to stably press the oil seal 1, thereby counteracting the axial component force generated by its rotational inertia.

[0027] Please refer to Figure 1 In one embodiment, the pressing component includes a U-shaped block 11, which is rotatably connected to a pressure roller 12 via a rotating shaft. The pressure roller 12 is a cylindrical component, and its outer surface contacts the edge of the oil seal 1. During the rotation of the oil seal 1, it can rotate relative to the oil seal 1, effectively reducing wear and friction, ensuring the pressing effect without affecting the surface quality of the oil seal.

[0028] Please refer to Figure 2In another embodiment, the pressing element can be a locking block 13, with a ball bearing 14 embedded at its bottom. The ball bearing 14 contacts the edge of the oil seal 1 by rolling, which can reduce the friction during the pressing process and achieve the same purpose of stable pressing.

[0029] In addition, to prevent the guide column 4 from sliding down excessively due to the excessive elasticity of the spring 5 or other external forces, thus affecting the stability of the device, a limit block 15 is provided at the top of the guide column 4 to limit its maximum downward stroke and protect the oil seal from being crushed.

[0030] In actual use, the operator first installs the oil seal 1 to be cut on the chuck 10, fixes the oil seal 1 by vacuum adsorption, and starts the motor 6 to drive the rotating shaft 7 to rotate the oil seal at high speed. At the same time, the pressing device is moved to a suitable position by the motion mechanism (not shown in the figure) so that the pressing part is pressed against the edge of the oil seal, and a stable axial pressing force is provided under the elastic action of the spring 5. Then the cutting knife 2 is started to cut the oil seal 1. The cutting process is stable and highly accurate, which significantly improves the cutting quality and avoids the problem of knife deviation or uneven cutting caused by the oil seal jumping.

[0031] Through the above structural design, the device of the present invention effectively solves the problem of axial runout of large-diameter oil seals during the rotary cutting process. It has the advantages of simple structure, convenient operation, reliable positioning, and high cutting quality, and is suitable for the cutting process requirements of various large-size rotary oil seals.

[0032] It should be noted that implementations not shown or described in the accompanying drawings or the main text of the specification are all forms known to those skilled in the art and are not described in detail. Furthermore, the definitions of the elements and methods described above are not limited to the various specific structures, shapes, or methods mentioned in the embodiments.

[0033] It should also be noted that this document may provide examples of parameters containing specific values, but these parameters need not be exactly equal to the corresponding values, but can approximate the corresponding values ​​within acceptable error tolerances or design constraints. Directional terms mentioned in the embodiments, such as "up," "down," "front," "back," "left," "right," "inner," and "outer," are only for reference to the directions in the accompanying drawings and are not intended to limit the scope of protection of this application.

[0034] The foregoing description illustrates and describes preferred embodiments of the present invention. As previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or related technical or knowledge. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A flexible auxiliary cutting device for a rotary oil seal, characterized in that, It includes a rotating device that drives the oil seal (1) to rotate, a cutting knife (2) for cutting the oil seal (1), and a pressing device that presses against the oil seal (1); In use, the rotating device drives the oil seal (1) to rotate, the cutting knife (2) cuts the oil seal (1), and the clamping device forms an axial clamping force on the oil seal (1); The clamping device includes at least two symmetrically arranged mounting brackets (3). Each mounting bracket (3) has a guide post (4) that slides vertically. The bottom end of the guide post (4) is provided with a pressure member. The pressure member is pressed against the oil seal (1). A spring (5) is sleeved on the guide post (4). One end of the spring (5) is connected to the mounting bracket (3), and the other end is connected to the pressure member.

2. The flexible auxiliary cutting device for the rotary oil seal according to claim 1, characterized in that, The rotating device includes a motor (6) and a rotating shaft (7). The rotating shaft (7) is rotatably mounted on the mounting plate (8). The motor (6) and the rotating shaft (7) are driven by a synchronous belt (9). The rotating shaft (7) is provided with a chuck (10) for fixing the oil seal (1).

3. The flexible auxiliary cutting device for the rotary oil seal according to claim 2, characterized in that, The chuck (10) is a vacuum adsorption chuck.

4. The flexible auxiliary cutting device for a rotary oil seal according to claim 1, characterized in that, The press-fit component is pressed against the edge of the oil seal (1).

5. The flexible auxiliary cutting device for the rotary oil seal according to claim 4, characterized in that, The pressing component includes a U-shaped block (11), and a pressure roller (12) is rotatably connected inside the U-shaped block (11) via a rotating shaft. The pressure roller (12) is pressed against the oil seal (1).

6. The flexible auxiliary cutting device for a rotary oil seal according to claim 4, characterized in that, The pressing component includes a locking block (13), and a ball (14) is embedded in the bottom of the locking block (13). The ball (14) is pressed against the oil seal (1).

7. The flexible auxiliary cutting device for a rotary oil seal according to claim 1, characterized in that, A limiting block (15) is provided at the top of the guide post (4).

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