An oil seal press-fitting device with positioning and guiding functions

Abstract

The utility model discloses a kind of oil seal press-fitting device with positioning and guiding function, belong to oil seal press-fitting technical field, the oil seal press-fitting device with positioning and guiding function, including guide cone, the guide cone upper end is fixedly connected with step, the guide cone bottom is equipped with connecting screw hole, the guide cone upper end is slidably connected with elastic dust cover, the guide cone is installed with positioning assembly, and the positioning assembly can provide accurate positioning for guide cone, the utility model is provided with step and give way slot, step can control oil seal press-fitting subsidence, give way slot is used to give double-lip oil seal lip give way, prevent crushing lip, and then greatly improve the service life of workpiece, by setting positioning assembly, evenly distributed positioning pin is inserted into workpiece positioning groove, form circumferentially symmetric constraint, quickly limit the radial deviation and angular inclination of guide cone, when hydraulic press presses down, positioning block is accurately slid along positioning profile inner wall, ensure accuracy when oil seal press-fitting.

Description

Technical Field

[0001] This utility model relates to the field of oil seal press-fitting technology, and in particular to an oil seal press-fitting device with positioning and guiding functions. Background Technology

[0002] Oil seals, as key sealing components that isolate the lubrication chamber of equipment from the external environment, are widely used in core components such as automotive transmissions, hydraulic cylinders of construction machinery, and motor bearing end covers. Their assembly quality directly determines the sealing reliability and service life of the equipment. If there are deviations in the pressing of the oil seal, it may lead to lubricating oil leakage and increased equipment maintenance costs, or even serious failures such as component wear and hydraulic system failure.

[0003] In existing press-fit engine oil seals, the oil seal and the oil seal hole are interference fit and there is no positioning structure. It is necessary to use a hydraulic press for press-fitting, while ensuring a certain oil seal flatness and sinking amount. At the same time, it will lead to insufficient sealing force, and engine oil will easily leak from the lip. If the pressure is not stopped in time, excessive press-fitting will cause plastic deformation of the oil seal hole.

[0004] Therefore, there is an urgent need to provide an oil seal press-fitting device with positioning and guiding functions to solve the above problems. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide an oil seal press-fitting device with positioning and guiding functions.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: providing an oil seal press-fitting device with positioning and guiding functions, including a guide cone, wherein a step is fixedly connected to the upper end of the guide cone, and a clearance groove is provided between the step and the guide cone;

[0007] The bottom of the guide cone is provided with a connecting screw hole, and the upper end of the guide cone is slidably connected with an elastic dustproof sleeve;

[0008] The guide cone is equipped with a positioning component, which provides precise positioning for the guide cone.

[0009] The present invention is further configured such that the diameter of the step is 109 mm and the diameter of the lower end of the guide cone is 50 mm.

[0010] The above technical solution facilitates quick insertion into the mounting holes of the oil seal or workpiece, significantly reducing the difficulty of aligning the device and the workpiece. Furthermore, it provides a uniform annular bearing surface for the oil seal during press-fitting, preventing uneven local stress from causing oil seal deformation. At the same time, it limits the radial displacement of the oil seal, ensuring the stability of the oil seal's posture during press-fitting.

[0011] The present invention is further configured such that: the thread of the connecting screw hole is a common metric thread, and the inner diameter of the connecting screw hole is 27mm, and the pitch of the connecting screw hole is 2mm.

[0012] Through the above technical solutions, metric threads improve the practicality and maintainability of the equipment. The 2mm pitch ensures a sufficient number of thread teeth while avoiding the problems of excessively dense thread teeth and insufficient strength of a single tooth caused by an excessively small pitch. The axial force during press-fitting can be distributed and transmitted through multiple thread teeth, preventing thread damage caused by stripping due to overload of a single tooth, and ensuring the stable connection between the guide cone and the press-fitting equipment.

[0013] The present invention is further configured such that: the positioning component includes multiple positioning holes opened at the upper end of the guide cone, each of the multiple positioning holes is slidably connected to a positioning pin, multiple positioning profiles are fixedly connected to the outer surface of the lower end of the guide cone, each of the multiple positioning profiles is slidably connected to a positioning block, a connecting plate is fixedly connected between the bottoms of the multiple positioning blocks, and multiple guide plates are fixedly connected to the upper end of the connecting plate.

[0014] The above technical solution involves first inserting multiple positioning pins into the positioning grooves of the workpiece to achieve initial positioning, then installing the connecting plate onto the hydraulic press head. When the hydraulic press head presses down, multiple positioning blocks slide into the positioning profiles accordingly to achieve final positioning.

[0015] The present invention is further configured such that: a plurality of positioning holes are evenly distributed on the upper end of the guide cone, and a plurality of positioning pins are matched with the corresponding positioning holes.

[0016] The above technical solution ensures that the reaction force of the workpiece borne by each positioning pin is evenly distributed and balanced, avoiding wear and deformation of local positioning holes and positioning pins due to concentrated overload. Furthermore, each positioning pin can smoothly slide into the corresponding positioning hole, avoiding jamming and misalignment.

[0017] The present invention is further configured such that the inner side of the elastic dust cover is in close contact with the guide cone and the outer surface of the step.

[0018] The above technical solution forms a continuous sealing surface through close contact, which can completely block external dust, oil, metal shavings and other impurities from entering the mating area between the guide cone and the oil seal, avoid impurities causing wear and scratches on the guide surface, and prevent uneven pressure resistance and skewed posture of the oil seal caused by impurities.

[0019] The present invention is further configured such that: the plurality of positioning blocks are all fitted with the inner wall of the corresponding positioning profile, and the top of the connecting plate is tightly fitted with the bottom of the guide cone.

[0020] Through the above technical solution, the positioning block and the inner wall of the positioning profile fit with high precision, which can form a strict radial constraint on the guide cone in the circumferential direction, greatly limiting the radial offset of the guide cone, and making the alignment accuracy between the axis of the guide cone and the axis of the workpiece oil seal mounting hole higher.

[0021] The beneficial effects of this utility model are as follows:

[0022] 1. By setting steps and clearance grooves, this utility model can control the amount of oil seal press-fit sinking, and the clearance groove is used to make way for the lip of the double-lip oil seal to prevent damage to the lip, thereby greatly improving the service life of the workpiece.

[0023] 2. This utility model, by setting up a positioning component, has evenly distributed positioning pins inserted into the workpiece positioning groove to form a circumferential symmetrical constraint, which quickly limits the radial offset and angular tilt of the guide cone. When the hydraulic press presses down, the positioning block slides precisely along the inner wall of the positioning profile. Through the circumferential constraint of multiple blocks that fit the workpiece reference surface, the accuracy of oil seal pressing is ensured. Attached Figure Description

[0024] Figure 1 This is an appearance drawing of the present utility model;

[0025] Figure 2 This is a cross-sectional view of the present invention;

[0026] Figure 3 This is a schematic diagram of the guide cone structure of this utility model;

[0027] Figure 4 This is a schematic diagram of the positioning component structure of this utility model.

[0028] In the figure: 1. Guide cone; 2. Step; 3. Leaving groove; 4. Connecting screw hole; 5. Elastic dust cover; 6. Positioning component; 601. Positioning hole; 602. Positioning pin; 603. Positioning profile; 604. Connecting plate; 605. Guide plate; 606. Positioning block. Detailed Implementation

[0029] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0030] Please see Figure 1 - Figure 4An oil seal press-fitting device with positioning and guiding functions includes a guide cone 1, a step 2 fixedly connected to the upper end of the guide cone 1, the step 2 having a diameter of 109 mm, and the lower end of the guide cone 1 having a diameter of 50 mm. This facilitates quick insertion into the mounting hole of the oil seal or workpiece, significantly reducing the difficulty of aligning the device with the workpiece. During press-fitting, it provides a uniform annular bearing surface for the oil seal, preventing uneven local stress that could lead to oil seal deformation, while also limiting the radial displacement of the oil seal and ensuring stable oil seal posture during press-fitting. A clearance groove 3 is provided between the step 2 and the guide cone 1. A connecting screw hole 4 is opened at the bottom of the guide cone 1. The thread of the connecting screw hole 4 is a standard metric thread, with an inner diameter of 27 mm and a pitch of 2 mm. The threaded design enhances the practicality and maintainability of the equipment. The 2mm pitch ensures a sufficient number of thread teeth while avoiding the problems of excessively dense thread teeth and insufficient strength of a single tooth caused by an excessively small pitch. The axial force during press-fitting can be distributed and transmitted through multiple thread teeth, preventing thread damage caused by stripping due to overload of a single tooth. This ensures a stable connection between the guide cone 1 and the press-fitting equipment. An elastic dustproof sleeve 5 is slidably connected to the upper end of the guide cone 1. The inner side of the elastic dustproof sleeve 5 is tightly fitted with the outer surface of the guide cone 1 and the step 2. The tight fit forms a continuous sealing surface, which can completely block external dust, oil, metal shavings and other impurities from entering the mating area between the guide cone 1 and the oil seal, avoiding wear and scratches on the guide surface caused by impurities, and preventing uneven pressing resistance and posture deviation of the oil seal due to impurities jamming.

[0031] like Figure 2 , Figure 3 and Figure 4As shown, a positioning assembly 6 is installed on the guide cone 1. The positioning assembly 6 includes multiple positioning holes 601 opened at the upper end of the guide cone 1. Positioning pins 602 are slidably connected to the inner side of each of the multiple positioning holes 601. Multiple positioning profiles 603 are fixedly connected to the outer surface of the lower end of the guide cone 1. Positioning blocks 606 are slidably connected to the inner wall of each of the multiple positioning profiles 603. A connecting plate 604 is fixedly connected between the bottoms of the multiple positioning blocks 606. Multiple guide plates 605 are fixedly connected to the upper end of the connecting plate 604. First, multiple positioning pins 602 are inserted into the positioning grooves of the workpiece to achieve initial positioning. Then, the connecting plate 604 is installed on the hydraulic press head. When the hydraulic press head presses down, the multiple positioning blocks 606 slide into the positioning profiles 603 accordingly to achieve final positioning. The multiple positioning holes 601 are evenly distributed on the guide cone 1. At the upper end, multiple positioning pins 602 match the corresponding positioning holes 601; the even distribution ensures that the workpiece reaction force borne by each positioning pin 602 is balanced and symmetrical, avoiding wear and deformation of the positioning holes 601 and positioning pins 602 due to concentrated overload, and each positioning pin 602 can smoothly slide into the corresponding positioning hole 601, avoiding jamming and misalignment. Multiple positioning blocks 606 fit with the inner wall of the corresponding positioning profile 603, and the top of the connecting plate 604 fits tightly with the bottom of the guide cone 1; the positioning blocks 606 fit with the inner wall of the positioning profile 603 with high precision, which can form a strict radial constraint on the guide cone 1 in the circumferential direction, greatly limiting the radial offset of the guide cone 1, making the alignment accuracy between the axis of the guide cone 1 and the axis of the workpiece oil seal mounting hole higher, and the positioning component 6 can provide precise positioning for the guide cone 1.

[0032] In use, this utility model first inserts multiple positioning pins 602 into the positioning groove of the workpiece to achieve initial positioning. Then, the connecting plate 604 is installed on the hydraulic press head. When the hydraulic press head presses down, multiple positioning blocks 606 slide into the positioning profile 603 to achieve final positioning. Finally, the guide cone 1 is pressed into the oil seal hole by the hydraulic press.

[0033] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. An oil seal press-fitting device with positioning and guiding functions, comprising a guide cone (1), characterized in that: The upper end of the guide cone (1) is fixedly connected to a step (2), and a clearance groove (3) is provided between the step (2) and the guide cone (1). The bottom of the guide cone (1) is provided with a connecting screw hole (4), and the upper end of the guide cone (1) is slidably connected with an elastic dustproof sleeve (5). The guide cone (1) is equipped with a positioning component (6), and the positioning component (6) can provide precise positioning for the guide cone (1).

2. The oil seal press-fitting device with positioning and guiding functions according to claim 1, characterized in that: The diameter of the step (2) is 109 mm, and the diameter of the lower end of the guide cone (1) is 50 mm.

3. The oil seal press-fitting device with positioning and guiding functions according to claim 1, characterized in that: The thread of the connecting screw hole (4) is a standard metric thread, and the inner diameter of the connecting screw hole (4) is 27 mm, and the pitch of the connecting screw hole (4) is 2 mm.

4. The oil seal press-fitting device with positioning and guiding functions according to claim 1, characterized in that: The positioning component (6) includes multiple positioning holes (601) opened at the upper end of the guide cone (1), and positioning pins (602) are slidably connected to the inner side of each of the multiple positioning holes (601). Multiple positioning profiles (603) are fixedly connected to the outer surface of the lower end of the guide cone (1). Positioning blocks (606) are slidably connected to the inner walls of each of the multiple positioning profiles (603). A connecting plate (604) is fixedly connected between the bottoms of the multiple positioning blocks (606). Multiple guide plates (605) are fixedly connected to the upper end of the connecting plate (604).

5. The oil seal press-fitting device with positioning and guiding functions according to claim 4, characterized in that: The plurality of positioning holes (601) are evenly distributed on the upper end of the guide cone (1), and the plurality of positioning pins (602) are matched with the corresponding positioning holes (601).

6. The oil seal press-fitting device with positioning and guiding functions according to claim 4, characterized in that: The inner side of the elastic dust cover (5) is in close contact with the outer surface of the guide cone (1) and the step (2).

7. The oil seal press-fitting device with positioning and guiding functions according to claim 4, characterized in that: Each of the positioning blocks (606) fits into the inner wall of the corresponding positioning profile (603), and the top of the connecting plate (604) fits tightly into the bottom of the guide cone (1).

Images