Elastic pressing die for assembling bearing sealing ring

Abstract

The utility model provides an elastic pressing die for assembling a bearing sealing ring, which comprises a fixed pressing die and a movable pressing die, a movable cavity with a downward opening is arranged in the fixed pressing die, an annular step is arranged on the lower end face of the fixed pressing die, the movable pressing die is arranged in the movable cavity in an up-and-down movable manner, and an elastic piece is arranged between the movable pressing die and the fixed pressing die. A positioning groove is formed in the outer wall of the movable pressing die, a positioning hole is formed in the fixed pressing die in a penetrating mode, a positioning piece is inserted into the positioning hole, the outer end of the positioning piece stretches out of the fixed pressing die, the inner end of the positioning piece stretches into the positioning groove, and a gap for vertical movement is reserved between the inner end of the positioning piece and the positioning groove. A positioning protruding column and an inner lip pressing ring are arranged at the lower end of the movable pressing die. The inner lip of the bearing sealing ring is arranged in the dustproof groove of the bearing inner ring through the inner lip pressing ring, so that the problem that the inner lip of the bearing sealing ring is not assembled in place is solved, and the performance of the bearing is ensured. And the movable pressing die and the fixed pressing die are limited and fixed through the positioning piece, so that the universality is good.

Description

Technical Field

[0001] This utility model relates to the field of bearing technology, and in particular to an elastic compression mold for assembling bearing seal rings. Background Technology

[0002] The bearing seal plays a crucial role in the bearing's performance and lifespan. On one hand, the seal prevents lubricant loss during use, keeping the bearing consistently lubricated. On the other hand, it prevents dust or harmful gases from entering the bearing cavity and causing damage. Bearings operating in harsh environments generally require seals; therefore, the seal is a vital component within the bearing.

[0003] In existing technology, the sealing ring is pressed into the sealing groove of the bearing using a press-fitting tool. The inner lip of the sealing ring must mate with the groove on the inner ring of the bearing to achieve a sealing and dustproof function. However, the pressing die of the existing press-fitting tool only presses on the skeleton of the sealing ring. The inner lip of the sealing ring is not easily inserted into the dustproof groove inside the inner ring due to the obstruction of the side wall of the inner ring, causing incomplete assembly and thus affecting the performance of the bearing. Summary of the Invention

[0004] The purpose of this utility model is to provide an elastic compression mold for assembling bearing seal rings, which can solve the technical problems mentioned in the background art.

[0005] To achieve the above objectives, the technical solution of this utility model is as follows: An elastic mold for assembling a bearing seal ring includes a fixed mold and a movable mold. The fixed mold has a downward-opening movable cavity. The lower end face of the fixed mold has an annular step for pressing the bearing seal ring skeleton. The movable mold is movably disposed in the movable cavity. An elastic element is provided between the movable mold and the fixed mold. The outer wall of the movable mold has a positioning groove. The fixed mold has a positioning hole through which a positioning element is inserted, opposite to the positioning groove. A positioning element is inserted into the positioning hole. The outer end of the positioning element extends out of the fixed mold, and the inner end of the positioning element extends into the positioning groove. A gap is left between the inner end of the positioning element and the positioning groove for vertical movement. The lower end of the movable mold has a positioning protrusion for positioning the inner ring of the bearing, and an inner lip pressure ring located outside the outer circle of the positioning protrusion for pressing the inner lip of the bearing seal ring. The lower end face of the inner lip pressure ring is higher than the lower end face of the positioning protrusion.

[0006] Preferably, there are two positioning holes symmetrically arranged on the fixed mold.

[0007] Preferably, the positioning groove is a countersunk hole and there are two of them, with each of the two positioning grooves corresponding to one of the two positioning holes.

[0008] Preferably, the positioning groove is an annular groove formed by the inward indentation of the outer wall of the movable mold.

[0009] Preferably, the positioning element is a pin.

[0010] Preferably, the positioning element is a screw, and the middle part of the positioning element is threadedly fitted with the positioning hole.

[0011] Preferably, the elastic element is a spring.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This utility model positions the bearing inner ring through the positioning protrusion of the movable die, and presses the bearing seal ring between the bearing inner ring and the bearing outer ring by the annular step of the fixed die pressing on the bearing seal ring skeleton. The inner lip pressure ring of the movable die presses on the inner lip of the bearing seal ring, ensuring the inner lip of the bearing seal ring is installed in the dustproof groove of the bearing inner ring. This eliminates the problem of improper assembly of the bearing seal ring inner lip, guaranteeing bearing performance. 2. Because an elastic element is provided between the movable die and the fixed die, the inner lip pressure ring will not forcibly press down on the inner lip of the bearing seal ring, minimizing damage to the inner lip of the bearing seal ring. 3. The movable die and the fixed die are limited and fixed by the positioning element, making disassembly and installation very convenient. It can also be replaced, offering good versatility. Attached Figure Description

[0013] Figure 1 This is a cross-sectional view of the assembled state of this utility model.

[0014] Figure 2 This is a cross-sectional view of the separated state of this utility model.

[0015] Figure 3 This is a partially enlarged view of the movable mold of this utility model. Detailed Implementation

[0016] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0017] like Figure 1 , Figure 2 , Figure 3As shown, this utility model provides an elastic mold for assembling bearing seal rings, including a fixed mold 1 and a movable mold 2. The fixed mold 1 has a downward-opening movable cavity 3, and the lower end face of the fixed mold 1 has an annular step 4 for pressing the bearing seal ring skeleton. The movable mold 2 is movably disposed in the movable cavity 3. An elastic element 5 is provided between the movable mold 2 and the fixed mold 1. The elastic element 5 is preferably a spring. The outer wall of the movable mold 2 has a positioning groove 6, and the fixed mold 1 has a through-hole groove that connects to the fixed mold 1. The positioning hole 7 is opposite to the positioning groove 6. A positioning element 8 is inserted into the positioning hole 7. The outer end of the positioning element 8 extends out of the fixed mold 1, and the inner end of the positioning element 8 extends into the positioning groove 6. There is a gap for vertical movement between the inner end of the positioning element 8 and the positioning groove 8. The lower end of the movable mold 2 is provided with a positioning protrusion 9 for positioning the inner ring of the bearing, and an inner lip pressure ring 10 located outside the outer circle of the positioning protrusion 9 for pressing the inner lip of the bearing seal ring. The lower end face of the inner lip pressure ring 10 is higher than the lower end face of the positioning protrusion 9.

[0018] The fixed mold 1 of this invention is connected to a drive mechanism at its upper end. A bearing positioning seat for positioning and placing the bearing assembly is provided below the movable mold 2. The bearing seal ring is placed in the corresponding position of the bearing assembly. The drive mechanism causes the fixed mold 1 and the movable mold 2 to move downwards. The positioning protrusion 9 of the movable mold 2 extends into the inner hole of the bearing inner ring, thereby positioning the bearing assembly. The inner lip pressure ring 10 of the movable mold 2 contacts the inner lip of the bearing seal ring. Because there is an elastic element 5 between the movable mold 2 and the fixed mold 1, the lower side of the positioning element 8 is positioned between the positioning groove 6 and the positioning element 8. With a gap, the movable die 2 moves upward relative to the fixed die 1, compressing the elastic element 5 until the lower side of the positioning element 8 contacts the positioning groove 6. The movable die 2 and the fixed die 1 then move downward together. The annular step 4 of the fixed die 1 presses against the bearing seal ring skeleton, allowing the bearing seal ring to be installed between the inner and outer rings of the bearing. Simultaneously, the inner lip pressure ring 10 of the movable die 2 presses against the inner lip of the bearing seal ring, allowing the inner lip of the bearing seal ring to be installed into the dustproof groove of the inner ring of the bearing. This prevents the bearing seal ring inner lip from being misaligned, ensuring bearing performance. Because the movable die 2 and the fixed die 1 have an elastic element 5 between them, the inner lip pressure ring 10 will not forcefully press down on the inner lip of the bearing seal ring, minimizing damage to the inner lip of the bearing seal ring. The positioning element 8 limits and fixes the movable die 2 and the fixed die 1, making disassembly and installation very convenient. It can also be replaced, offering good versatility. Then, the drive mechanism moves the fixed mold 1 and the movable mold 2 upwards, and the movable mold 2 is reset downwards under the action of the elastic element 5, so that the assembled bearing assembly can be removed and the next round of bearing seal ring installation can be carried out.

[0019] Preferably, there are two positioning holes 7 symmetrically arranged on the fixed mold 1, and the structure is more stable through positioning and fixing on both sides.

[0020] Preferably, when the positioning groove 6 is a countersunk hole and there are two of them, the two positioning grooves 6 correspond one-to-one with the two positioning holes 7, and positioning and fixing are achieved by inserting two positioning elements 8 into the corresponding positioning holes 7 and positioning grooves 6. Alternatively, when the positioning groove 6 is an annular groove formed by the inward indentation of the outer wall of the movable mold 2, the positioning elements 8 are inserted into the corresponding positioning holes 7 and then into the positioning groove 6. Since the positioning groove 6 is an annular groove, the positioning elements are easy to insert.

[0021] Preferably, the positioning element 8 can be a pin, which can be directly inserted into the positioning hole 7 and the positioning groove 6. Alternatively, the positioning element 8 can be a screw, with the middle part of the positioning element 8 threaded into the positioning hole 7 for installation, that is, the positioning element 8 is screwed into the positioning hole 7 for installation, which is reliable.

[0022] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. An elastic compression mold for assembling bearing seal rings, characterized in that: The device includes a fixed mold and a movable mold. The fixed mold has a downward-opening movable cavity. The lower end face of the fixed mold has an annular step for pressing the bearing seal ring skeleton. The movable mold is movably disposed in the movable cavity. An elastic element is provided between the movable mold and the fixed mold. The outer wall of the movable mold has a positioning groove. The fixed mold has a positioning hole through which a positioning element is inserted, opposite to the positioning groove. A positioning element is inserted into the positioning hole. The outer end of the positioning element extends out of the fixed mold, and the inner end of the positioning element extends into the positioning groove. A gap is left between the inner end of the positioning element and the positioning groove for vertical movement. The lower end of the movable mold has a positioning protrusion for positioning the inner ring of the bearing, and an inner lip pressure ring located outside the outer circle of the positioning protrusion for pressing the inner lip of the bearing seal ring. The lower end face of the inner lip pressure ring is higher than the lower end face of the positioning protrusion.

2. The elastic compression mold for assembling bearing seals according to claim 1, characterized in that: There are two positioning holes, which are symmetrically arranged on the fixed mold.

3. The elastic compression mold for assembling bearing seals according to claim 2, characterized in that: The positioning groove is a countersunk hole and there are two of them, with each of the two positioning grooves corresponding to one of the two positioning holes.

4. The elastic compression mold for assembling bearing seals according to claim 2, characterized in that: The positioning groove is an annular groove formed by the inward indentation of the outer wall of the movable mold.

5. The elastic compression mold for assembling bearing seals according to any one of claims 1-4, characterized in that: The positioning component is a pin.

6. The elastic compression mold for assembling bearing seals according to any one of claims 1-4, characterized in that: The positioning component is a screw, and the middle part of the positioning component is threadedly fitted into the positioning hole.

7. The elastic compression mold for assembling bearing seals according to any one of claims 1-4, characterized in that: The elastic element is a spring.

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