Cylinder structure beneficial to prolonging service life of sealing ring and vulcanizing machine thereof

Abstract

The utility model discloses a barrel structure beneficial to prolonging the service life of a sealing ring and a vulcanizing machine thereof, and belongs to the technical field of steamer type tire vulcanizing equipment, the barrel structure comprises a barrel, and a smooth layer is arranged on the inner wall of the barrel; the surface roughness of the smooth layer is lower than that of the cylinder body; the outer wall of the lower steam chamber is in clearance fit with the inner wall of the barrel; the lower steam chamber can move in the axis direction of the barrel. The sealing ring sleeves and is fixed on the outer wall of the lower steam chamber; the sealing ring blocks a gap between the cylinder body and the lower steam chamber; in the moving process of the lower steam chamber, the sealing ring is always in contact with the smooth layer; by means of the smooth layer which is arranged on the inner wall of the cylinder body and is low in surface roughness, friction force between the sealing ring and the inner wall of the cylinder body when the lower steam chamber moves relative to the cylinder body can be reduced, the sealing effect of the sealing ring can be improved, the service life of the sealing ring can be prolonged, and the replacement frequency of the sealing ring is greatly reduced. The utilization rate of the vulcanizing machine and the vulcanizing efficiency of the tire are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steamer-type tire vulcanizing equipment, in particular to a barrel structure and a vulcanizing machine thereof which are beneficial to prolonging the service life of a sealing ring. Background Art

[0002] The core structure of the existing steamer-type tire vulcanizer is a steam chamber located in a cylinder, and the steam chamber is usually composed of an upper steam chamber, a middle steam chamber and a lower steam chamber. During the vulcanization process of the tire, it is necessary to adjust the height of the lower steam chamber according to the size of the tire mold. A sealing ring is provided between the lower steam chamber and the cylinder to isolate the steam chamber from the outside world. The sealing ring is usually fixed to the lower steam chamber by pressing.

[0003] During the movement of the lower steam chamber relative to the cylinder, the friction between the sealing ring and the cylinder will reduce the sealing effect and service life of the sealing ring. The current common solution is to reduce the friction coefficient by controlling the machining accuracy of the inner wall of the cylinder. However, in actual application, the high temperature and high pressure gas in the steam chamber will corrode the inner wall of the cylinder, which will greatly increase the roughness of the inner wall of the cylinder, resulting in unsatisfactory sealing effect and service life of the sealing ring.

[0004] Therefore, developing and designing a barrel structure and a vulcanizing machine thereof which can effectively reduce the friction between the sealing ring and the barrel, have good corrosion resistance, and improve the sealing effect and service life of the sealing ring is a problem that needs to be solved urgently at this stage. Utility Model Content

[0005] In order to solve the problems existing in the prior art, the utility model provides a barrel structure and a vulcanizer thereof which are beneficial to extending the service life of the sealing ring. By utilizing a smooth layer with a low surface roughness arranged on the inner wall of the barrel, the friction between the sealing ring and the inner wall of the barrel when the lower steam chamber moves relative to the barrel can be greatly reduced, thereby improving the sealing effect and service life of the sealing ring, greatly reducing the replacement frequency of the sealing ring, and improving the utilization rate of the vulcanizer and the vulcanization efficiency of the tire.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0007] On the one hand, the utility model provides a cylinder structure that is beneficial to prolonging the service life of the sealing ring, including:

[0008] A cylinder, wherein a smooth layer is provided on the inner wall of the cylinder; the surface roughness of the smooth layer is lower than the surface roughness of the cylinder;

[0009] A lower steam chamber, the lower steam chamber is located in the cylinder, the outer wall of the lower steam chamber and the inner wall of the cylinder are in clearance fit; the lower steam chamber can move along the axial direction of the cylinder;

[0010] A sealing ring is sleeved and fixed on the outer wall of the lower steam chamber, and the sealing ring seals the gap between the cylinder and the lower steam chamber; during the movement of the lower steam chamber, the sealing ring is always in contact with the smooth layer.

[0011] As a preferred technical solution, the material of the smoothing layer is set to be stainless steel.

[0012] As a preferred technical solution, the smoothing layer is a nickel-chromium alloy coating sprayed on the inner wall of the cylinder;

[0013] Alternatively, the smooth layer is configured as a cylindrical plate, and the smooth layer is embedded on the inner wall of the cylinder.

[0014] As a preferred technical solution, a support plate is provided at the bottom of the lower steam chamber, and the support plate can drive the lower steam chamber to move;

[0015] And / or, the width of the smooth layer along the axial direction of the cylinder is not less than the stroke of the lower steam chamber.

[0016] As a preferred technical solution, a pressure plate fixedly connected to the end surface of the lower steam chamber is provided, and a shoulder is provided at the outer edge of the end surface of the lower steam chamber. The pressure plate and the shoulder form a placement groove for positioning the sealing ring.

[0017] As a preferred technical solution, part of the sealing ring is embedded in the placement groove and has an interference fit with the placement groove.

[0018] As a preferred technical solution, a V-shaped ring groove is provided on the contact surface between the sealing ring and the pressing plate;

[0019] and / or, the width of the sealing ring gradually decreases in a direction away from the pressing plate;

[0020] And / or, a plurality of annular protrusions are provided on the outer wall and the inner wall of the sealing ring, and the plurality of annular protrusions are distributed around the axial direction of the sealing ring.

[0021] As a preferred technical solution, the pressure plate is fixedly connected to the lower steam chamber via a stud; a screw hole is provided on the end surface of the lower steam chamber, and the pressure plate has a through hole, the stud passes through the through hole and is threadedly connected to the screw hole, the stud is provided with a nut threadedly connected to it, and the pressure plate is located between the nut and the lower steam chamber.

[0022] As a preferred technical solution, a gasket is embedded between the pressing plate and the end surface of the lower steam chamber.

[0023] In a second aspect, the utility model provides a vulcanizing machine, comprising the aforementioned barrel structure which is beneficial for extending the service life of the sealing ring.

[0024] The beneficial effects of the utility model are as follows:

[0025] 1. The utility model utilizes a smooth layer with low surface roughness arranged on the inner wall of the cylinder, which can greatly reduce the friction between the sealing ring and the inner wall of the cylinder when the lower steam chamber moves relative to the cylinder, can improve the sealing effect of the sealing ring, and has less damage to the sealing ring. The service life of the sealing ring can be extended by 3-4 times, the structure is reliable and durable, the replacement frequency of the sealing ring is greatly reduced, the cost loss caused by replacing the sealing ring is reduced, and the utilization rate of the vulcanizer and the vulcanization efficiency of the tire are improved.

[0026] 2. The material of the smoothing layer of the utility model is stainless steel, which has good high temperature resistance and corrosion resistance. During the vulcanization process, the high temperature and high pressure gas in the steam chamber will not cause corrosion to the surface of the smoothing layer, ensuring that the smoothing layer always has a low surface roughness.

[0027] 3. The utility model can be applied to the existing vulcanizing machine with a steam chamber structure, the transformation period is short, and the impact on normal production is small. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of an embodiment of a cylinder structure that is beneficial for extending the service life of a sealing ring of the utility model;

[0029] Figure 2 for Figure 1 A magnified image of area A;

[0030] Figure 3 for Figure 1 Magnified view of area B.

[0031] In the figure: 1-cylinder, 2-smooth layer, 3-lower steam chamber, 31-support plate, 32-shaft shoulder, 33-screw hole, 4-sealing ring, 41-V-shaped ring groove, 42-annular protrusion, 5-pressing plate, 51-through hole, 6-stud, 61-nut, 7-gasket. DETAILED DESCRIPTION

[0032] In order to facilitate understanding by those skilled in the art, the present invention is further described below in conjunction with the accompanying drawings.

[0033] First, please refer to Figure 1-Figure 3, an embodiment of a cylinder structure that is beneficial to extending the service life of a sealing ring provided by the utility model, comprises a vertically arranged cylinder 1 and a lower steam chamber 3 arranged in the cylinder 1, the outer wall of the lower steam chamber 3 is gap-matched with the inner wall of the cylinder 1, and the lower steam chamber 3 can move in the vertical direction; a sealing ring 4 is fixed at the outer wall of the lower steam chamber 3, and the sealing ring 4 blocks the gap between the cylinder 1 and the lower steam chamber 3 to achieve the sealing of the steam chamber; a smooth layer 2 is provided at the inner wall of the cylinder 1 corresponding to the sealing ring 4, and the surface roughness of the smooth layer 2 is lower than the surface roughness of the cylinder 1, and in the movement process of the lower steam chamber 3, the sealing ring 4 is always in contact with the smooth layer 2, which can greatly reduce the friction between the sealing ring 4 and the inner wall of the cylinder 1 when the lower steam chamber 3 moves relative to the cylinder 1, thereby improving the sealing effect and service life of the sealing ring 4.

[0034] It should be noted that the material of the smooth layer 2 is preferably stainless steel, which has good high temperature resistance and corrosion resistance, and can ensure that the smooth layer 2 always has a low surface roughness.

[0035] For further information, please refer to Figure 1-Figure 3 , the smoothing layer 2 is set to be a cylindrical stainless steel plate, and the stainless steel plate is fixed on the inner wall of the cylinder 1 by inlaying; specifically, a groove for inlaying is processed on the inner wall of the cylinder 1 corresponding to the smoothing layer 2, and after the stainless steel plate is inlaid into the groove, the stainless steel plate is fixed in the groove by welding; in other embodiments, the smoothing layer 2 can also be set to a nickel-chromium alloy coating sprayed on the inner wall of the cylinder 1, so as to effectively ensure that the smoothing layer 2 has a lower surface roughness and a higher corrosion resistance.

[0036] In this embodiment, please refer to Figure 1 A supporting plate 31 is provided at the bottom of the lower steam chamber 3. The supporting plate 31 can support the lower steam chamber 3, and the hydraulic cylinder can drive the lower steam chamber 3 to move in the vertical direction through the supporting plate 31.

[0037] For further information, please refer to Figure 3 The width W of the smooth layer 2 along the axial direction of the cylinder 1 should not be less than the stroke S of the lower steam chamber 3, which can ensure that the sealing ring 4 is always in contact with the smooth layer 2 during the movement of the lower steam chamber 3.

[0038] In this embodiment, please refer to Figure 2 and Figure 3 A pressure plate 5 fixedly connected to the end surface of the lower steam chamber 3 is provided, and a shoulder 32 is provided at the outer edge of the end surface of the lower steam chamber 3. The pressure plate 5 and the shoulder 32 form a placement groove for positioning the sealing ring 4; specifically, part of the sealing ring 4 is embedded in the placement groove and has an interference fit with the placement groove, so that the sealing ring 4 can be firmly positioned in the placement groove.

[0039] For further information, please refer to Figure 2 and Figure 3 A V-shaped annular groove 41 is provided on the abutting surface between the sealing ring 4 and the pressure plate 5. At the same time, the width of the sealing ring 4 gradually decreases in the direction away from the pressure plate 5, that is, the cross-section of the sealing ring 4 is a trapezoid. The shape of the sealing ring 4 and the V-shaped annular groove 41 provided on the sealing ring 4 can make the sealing ring 4 easier to produce corresponding deformation following the pressure change in the steam chamber, thereby ensuring the sealing effect.

[0040] For further information, please refer to Figure 2 and Figure 3 A plurality of annular protrusions 42 are provided on the outer wall and the inner wall of the sealing ring 4. The plurality of annular protrusions 42 are distributed around the axial direction of the sealing ring 4. The annular protrusions 42 are in contact with the bottom surface of the placement groove and the inner wall of the cylinder 1 respectively, which can improve the sealing effect.

[0041] Based on the above examples, please refer to Figure 2 and Figure 3 , the pressing plate 5 is fixedly connected to the lower steam chamber 3 through the stud 6; specifically, a screw hole 33 is provided on the end surface of the lower steam chamber 3, and a through hole 51 is provided on the pressing plate 5. The stud 6 passes through the through hole 51 and is threadedly connected to the screw hole 33. The stud 6 is provided with a nut 61 threadedly connected to it. The pressing plate 5 is located between the nut 61 and the lower steam chamber 3. By tightening the nut 61, the pressing plate 5 can be fixed to the end surface of the lower steam chamber 3.

[0042] For further information, please refer to Figure 2 and Figure 3 A gasket 7 is embedded between the pressing plate 5 and the end surface of the lower steam chamber 3. By adjusting the thickness of the gasket 7, the width of the placement groove can be adjusted, which is convenient for placing and positioning the sealing ring 4.

[0043] Second, please refer to Figure 1 , which is an embodiment of a vulcanizer provided by the utility model, includes the aforementioned barrel structure which is beneficial to prolonging the service life of the sealing ring, and can conveniently transform the existing vulcanizer with a steam chamber structure, with a short transformation period and little impact on normal production.

[0044] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A cylinder structure that is beneficial to extending the service life of a sealing ring, characterized in that: include: A cylinder (1), wherein a smooth layer (2) is provided on the inner wall of the cylinder (1); the surface roughness of the smooth layer (2) is lower than the surface roughness of the cylinder (1); A lower steam chamber (3), the lower steam chamber (3) is located in the barrel (1), the outer wall of the lower steam chamber (3) is clearance-matched with the inner wall of the barrel (1); the lower steam chamber (3) can move along the axial direction of the barrel (1); A sealing ring (4), the sealing ring (4) is sleeved and fixed on the outer wall of the lower steam chamber (3), and the sealing ring (4) blocks the gap between the cylinder (1) and the lower steam chamber (3); during the movement of the lower steam chamber (3), the sealing ring (4) is always in contact with the smooth layer (2).

2. A cylinder structure that is beneficial for extending the service life of the sealing ring according to claim 1, characterized in that: The material of the smooth layer (2) is stainless steel.

3. A cylinder structure that is beneficial for extending the service life of the sealing ring according to claim 2, characterized in that: The smoothing layer (2) is a nickel-chromium alloy coating sprayed on the inner wall of the cylinder (1); Alternatively, the smooth layer (2) is provided as a cylindrical plate, and the smooth layer (2) is embedded on the inner wall of the cylindrical body (1).

4. A cylinder structure that is beneficial for extending the service life of a sealing ring according to claim 1, characterized in that: A support plate (31) is provided at the bottom of the lower steam chamber (3), and the support plate (31) can drive the lower steam chamber (3) to move; And / or, the width of the smooth layer (2) along the axial direction of the cylinder (1) is not less than the stroke of the lower steam chamber (3).

5. The barrel structure for extending the service life of the sealing ring according to claim 1, characterized in that: A pressure plate (5) fixedly connected to the end surface of the lower steam chamber (3) is provided, and a shaft shoulder (32) is provided at the outer edge of the end surface of the lower steam chamber (3). The pressure plate (5) and the shaft shoulder (32) form a placement groove for positioning the sealing ring (4).

6. A cylinder structure that is beneficial for extending the service life of the sealing ring according to claim 5, characterized in that: Part of the sealing ring (4) is embedded in the placement groove and is interference fit with the placement groove.

7. A cylinder structure that is beneficial for extending the service life of the sealing ring according to claim 6, characterized in that: A V-shaped annular groove (41) is provided on the contact surface between the sealing ring (4) and the pressing plate (5); And / or, the width of the sealing ring (4) gradually decreases in a direction away from the pressing plate (5); And / or, a plurality of annular protrusions (42) are provided on the outer wall and the inner wall of the sealing ring (4), and the plurality of annular protrusions (42) are distributed around the axial direction of the sealing ring (4).

8. The cylinder structure for extending the service life of the sealing ring according to claim 5, characterized in that: The pressing plate (5) is fixedly connected to the lower steam chamber (3) via a stud (6); a screw hole (33) is provided on the end surface of the lower steam chamber (3); the pressing plate (5) has a through hole (51); the stud (6) passes through the through hole (51) and is threadedly connected to the screw hole (33); the stud (6) is provided with a nut (61) threadedly connected thereto; the pressing plate (5) is located between the nut (61) and the lower steam chamber (3).

9. A cylinder structure that is beneficial for extending the service life of the sealing ring according to claim 8, characterized in that: A gasket (7) is embedded between the pressing plate (5) and the end surface of the lower steam chamber (3).

10. A vulcanizing machine, characterized in that: It comprises a cylinder structure as described in any one of claims 1-9, which is beneficial for extending the service life of the sealing ring.

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