Sealing structure for carrier roller

Abstract

The utility model relates to the field of carrier roller sealing, and discloses a sealing structure for a carrier roller, which comprises a contact piece, an installation piece is arranged on the lower portion of the contact piece, a sealing piece is arranged on the periphery of the contact piece and the installation piece, the sealing piece comprises an extrusion ring, and the inner side of the extrusion ring is in extrusion contact with the outer side of the contact piece. A first matching ring is fixedly connected to the lower portion of the sealing piece, a protection piece is clamped to the outer side of the sealing piece, and a second matching ring is fixedly connected to the upper portion of the outer side of the mounting piece. According to the utility model, the number of components of the sealing structure is reduced, the overall structure is simplified, the cost and the installation complexity are reduced, and the convex ring at the lower part of the contact piece is clamped with the clamping groove at the middle part of the installation piece, so that the stable connection is ensured, and the installation and the disassembly are convenient; the contact area and the pressure with the contact piece are increased, moisture and impurities are effectively prevented from invading through cooperation with the contact piece, and the waterproof sealing effect is improved.

Description

Technical Field

[0001] This utility model relates to the field of idler roller sealing, and in particular to a sealing structure for idler rollers. Background Technology

[0002] In practical applications of idlers, sealing performance is of paramount importance, as it directly affects the service life, operational stability, and overall performance of the equipment.

[0003] Existing waterproof sealing structures have excessive frictional resistance between the seal and other components of the idler roller, causing the idler roller to consume more power during operation. On the other hand, sealing structures with low resistance have poor waterproofing effect. Once water enters the interior of the idler roller, it will accelerate the corrosion and rust of critical components such as bearings, reducing the service life of the idler roller. Therefore, a sealing structure for idler rollers is proposed to solve the above problems. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a sealing structure for idler rollers, which aims to improve the problems of existing sealing structures being complex, having high resistance after use, being prone to wear, and not being able to provide waterproofing for a long time.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a sealing structure for idler rollers, including a contact member, a mounting member provided at the lower part of the contact member, and a sealing member provided around the contact member and the mounting member;

[0006] The sealing element includes a compression ring, the inner side of which is pressed against the outer side of the contact element. A first mating ring is fixedly connected to the lower part of the sealing element, a protective element is snapped onto the outer side of the sealing element, and a second mating ring is fixedly connected to the upper outer side of the mounting element.

[0007] As a further description of the above technical solution:

[0008] The extrusion rings are provided in two sets, and the two sets of extrusion rings are evenly arranged from top to bottom in the inner ring of the seal. The width of the extrusion rings gradually decreases from the point near the seal and is inclined upward.

[0009] As a further description of the above technical solution:

[0010] The upper outer side of the seal has a groove, and the upper outer side of the seal is set as an upward inclined surface. The protective component is snapped into the inner wall of the groove of the seal and is attached to the outer side of the inclined surface of the seal.

[0011] As a further description of the above technical solution:

[0012] The outer side of the mounting component is recessed, and it is fixedly connected to the middle of the recess with a second ring.

[0013] As a further description of the above technical solution:

[0014] A raised ring is provided on the lower outer side of the contact element, and a slot is provided on the middle inner side of the mounting element, with the raised ring engaging with the inner wall of the slot.

[0015] As a further description of the above technical solution:

[0016] The first mating ring is provided in two sets, and the two sets of the first mating ring are respectively located on both sides of the second mating ring.

[0017] As a further description of the above technical solution:

[0018] The first mating ring and the second mating ring together form a maze groove.

[0019] As a further description of the above technical solution:

[0020] A limit ring is provided on the lower side of the upper part of the contact element near the periphery of the seal.

[0021] This utility model has the following beneficial effects:

[0022] 1. In this utility model, by reducing the number of sealing structure components, the overall structure is simplified, reducing costs and installation complexity. The engagement between the lower convex ring of the contact component and the middle slot of the mounting component ensures a stable connection and facilitates installation and disassembly. Two sets of compression rings are set, which gradually narrow from the near part of the sealing component and tilt upwards to increase the contact area and pressure with the contact component. In conjunction with the contact component, they effectively prevent moisture and impurities from intruding and improve the waterproof sealing effect.

[0023] 2. In this utility model, the labyrinth groove structure is formed by the matching ring one and matching ring two. The multiple bends in the channel can increase the amount of grease stored, and perform secondary lubrication and maintenance on the bearing. Attached Figure Description

[0024] Figure 1 This is a three-dimensional structural diagram of the overall device in this utility model;

[0025] Figure 2 This is a bottom-view three-dimensional structural diagram of the overall device in this utility model;

[0026] Figure 3 This is a three-dimensional structural diagram of the disassembled integral device in this utility model;

[0027] Figure 4 This is a front-view three-dimensional cross-sectional view of the overall device in this utility model;

[0028] Figure 5 This is a front-view three-dimensional cross-sectional view of the sealing and protective components in this utility model.

[0029] Legend:

[0030] 1. Contact element; 2. Mounting element; 3. Seal element; 31. Extrusion ring; 32. Mating ring one; 4. Protective element; 5. Mating ring two; 6. Labyrinth groove; 7. Raised ring; 8. Slot. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Reference Figure 1 - Figure 3 This utility model provides an embodiment of a sealing structure for idler rollers, including a contact member 1 made of rubber, which is installed on the outside of the idler roller shaft to prevent external pollutants such as dust, impurities, and moisture from entering the idler roller. A mounting member 2 made of rubber is provided at the lower part of the contact member 1 for connection with the bearing. During rotation, it achieves self-lubrication through the grease inside the labyrinth groove 6. A convex ring 7 is provided on the lower outer side of the contact member 1. A groove 8 is opened on the inner side of the middle part of the mounting member 2. The convex ring 7 is engaged with the inner wall of the groove 8. The cooperation between the convex ring 7 and the groove 8 ensures the stability of the connection with the mounting member 2. This reduces the number of sealing structure components, simplifies the overall structure, and reduces costs and installation complexity. A sealing member 3 is provided around the contact member 1 and the mounting member 2.

[0033] Reference Figure 3 - Figure 5 The sealing element 3 includes a compression ring 31, the inner side of which is pressed against the outer side of the contact element 1. A mating ring 32 is fixedly connected to the lower part of the sealing element 3. A protective element 4, made of metal, is snapped onto the outer side of the sealing element 3. Its main function is to protect against external dust, impurities, etc., from directly contacting the sealing element 3, thus preventing damage to the sealing element 3 and extending its service life. During installation, the lower part of the protective element 4 is compressed and deformed, allowing it to approach the outer side of the mounting element 2 but not to fit against it. At the same time, the deformation of the protective element 4 achieves a self-tightening function, facilitating gripping by the robotic arm. It can be used for automated robotic arm picking and assembly. A mating ring 5 is fixedly connected to the upper outer side of the mounting element 2. The mating ring 32 and the mating ring 5 form a labyrinth groove 6. With its multiple bends, the amount of grease stored can be increased, providing secondary lubrication and maintenance for the bearing, reducing bearing wear, improving the rotation efficiency of the idler roller, and extending its service life.

[0034] Reference Figure 4 and Figure 5 Two sets of extrusion rings 31 are provided, evenly arranged from top to bottom on the inner ring of the seal 3. The width of the extrusion rings 31 gradually narrows from near the seal 3 and is inclined upwards. The shape of the extrusion rings 31 increases the contact area and pressure with the contact element 1, effectively preventing moisture and impurities from entering the roller, significantly improving the waterproof sealing effect, reducing oxidation and rust of items, and supporting and positioning the seal 3. A groove is provided on the upper outer side of the seal 3, and the upper outer side of the seal 3 is set as an upward inclined surface. The protective element 4 is snapped into the inner wall of the groove of the seal 3, and the protective element... 4 is attached to the outside of the inclined surface of the seal 3. The seal 3 is made of rubber. When the protective part 4 is installed, the seal 3 has a certain deformation. The outer dimension of the seal 3 is slightly larger than that of the outer dimension of the protective part 4. When snapping, the seal 3 will deform, thereby increasing the snapping strength. The outer side of the mounting part 2 is recessed, and the mating ring 2 5 is fixedly connected to the middle of the recess. There are two sets of mating ring 1 32. The two sets of mating ring 1 32 are located on both sides of mating ring 2 5. The upper and lower sides of the contact part 1 are provided with limit rings near the outer periphery of the seal 3 to block dust and moisture.

[0035] Working principle: When in use, align the contact 1 with the mounting part 2, and the protruding ring 7 at the bottom of the contact 1 will be inserted into the slot 8 on the inner side of the middle of the mounting part 2. This snap-fit ​​method not only makes the contact 1 and the mounting part 2 firmly connected, but also facilitates subsequent installation and disassembly operations.

[0036] Two sets of extrusion rings 31 on the seal 3 are tightly pressed against the outside of the contact 1. The width of the extrusion rings 31 gradually narrows and tilts upward from the point near the seal 3. This special shape increases the contact area and pressure with the contact 1, effectively preventing external moisture and impurities from entering the idler roller, reducing oxidation and rust of internal parts of the idler roller, and improving the waterproof sealing effect.

[0037] Meanwhile, the limiting ring set on the upper lower side of the contact element 1 near the periphery of the seal element 3 can also play a certain role in blocking dust and moisture.

[0038] The protective component 4 is snapped into the inner wall of the groove on the upper outer side of the seal 3 and fits against its upward inclined surface. The protective component 4 is made of metal, which can prevent external dust and impurities from directly contacting the seal 3, avoid damage to the seal 3, and extend the service life of the seal 3. During installation, the lower part of the protective component 4 is squeezed and deformed, approaching the outside of the mounting component 2 but not fitting, further enhancing the sealing effect.

[0039] The labyrinth groove 6 structure is formed by the first ring 32 and the second ring 5. The labyrinth groove 6 increases the amount of grease stored by the multiple bends of the channel. During the operation of the idler roller, the stored grease can perform secondary lubrication and maintenance on the bearing, reduce bearing wear, improve the rotation efficiency of the idler roller, and extend the service life of the idler roller.

[0040] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sealing structure for a carrier roller, comprising a contact piece (1), characterized in that: The lower part of the contact piece (1) is provided with a mounting piece (2), and the periphery of the contact piece (1) and the mounting piece (2) is provided with a sealing piece (3); The sealing piece (3) comprises an extrusion ring (31), the inner side of the extrusion ring (31) is extruded and contacted on the outer side of the contact piece (1), the lower part of the sealing piece (3) is fixedly connected with a matching ring one (32), the outer side of the sealing piece (3) is connected with a protective piece (4), and the upper part of the outer side of the mounting piece (2) is fixedly connected with a matching ring two (5).

2. A sealing structure for an idler roller according to claim 1, characterized in that: The extrusion ring (31) is provided with two groups, and the two groups of extrusion rings (31) are evenly arranged from top to bottom at the inner ring of the sealing piece (3), the width of the extrusion ring (31) gradually shrinks from the position close to the sealing piece (3), and the extrusion ring (31) is inclined upward.

3. The sealing structure for a carrier roller according to claim 1, characterized by: The upper side of the outer side of the sealing piece (3) is provided with a groove, and the upper part of the outer side of the sealing piece (3) is provided as an inclined surface, the protective piece (4) is connected in the inner wall of the groove of the sealing piece (3), and the protective piece (4) is attached to the outer side of the inclined surface of the sealing piece (3).

4. The sealing structure for a carrier roller according to claim 1, characterized by: The outer side of the mounting piece (2) is concave, and the matching ring two (5) is fixedly connected to the middle part of the concave part.

5. The sealing structure for a carrier roller according to claim 1, characterized by: The lower part of the outer side of the contact piece (1) is provided with a convex ring (7), the inner side of the middle part of the mounting piece (2) is provided with a clamping groove (8), and the convex ring (7) is connected in the inner wall of the clamping groove (8).

6. The sealing structure for a carrier roller according to claim 1, characterized by: The matching ring one (32) is provided with two groups, and the two groups of matching ring one (32) are respectively located on both sides of the matching ring two (5).

7. The sealing structure for a carrier roller according to claim 1, characterized by: The matching ring one (32) and the matching ring two (5) form a labyrinth groove (6).

8. The sealing structure for a carrier roller according to claim 1, characterized by: The upper part of the lower side of the contact piece (1) is provided with a limiting ring close to the periphery of the sealing piece (3).

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