A capsule forming drum noise reduction device

Abstract

The utility model relates to a capsule forming drum noise reduction device, be provided between the main shaft (1) of capsule forming drum and annular support (2), including sound insulation cotton layer (3), and the quick -drain valve (4) of capsule forming drum sets up in sound insulation cotton layer (3). Compared with prior art, the utility model has the advantages of low cost, not easy to block, easy to install and disassemble and the like.

Description

Technical Field

[0001] This utility model relates to the field of tire manufacturing technology, and in particular to a noise reduction device for a capsule forming drum. Background Technology

[0002] A bladder forming drum is a key piece of equipment in tire production, primarily used to accurately bond the tire carcass, sidewalls, and other components together. This is achieved by bladders positioned on both sides of the drum, allowing the sidewalls to wrap around the tire carcass. The bladder forming drum consists of two side drums, each containing a wrapping bladder and a booster bladder. During inflation, the wrapping bladder expands the sidewall, causing it to move towards the side of the tire carcass. The booster bladder provides support to the wrapping bladder, facilitating the bonding of the sidewall material. After bonding, a quick-release valve opens, allowing air to escape from the wrapping and booster bladders. This quick-release process generates noise. Current technologies often use mufflers to reduce noise, but this is problematic. Firstly, multiple quick-release valves require multiple mufflers, increasing costs. Secondly, mufflers are prone to clogging over time, making maintenance and cleaning complex. Utility Model Content

[0003] The purpose of this invention is to provide a capsule forming drum noise reduction device that is low in cost and not prone to clogging.

[0004] The purpose of this utility model can be achieved through the following technical solution: a noise reduction device for a capsule forming drum, which is set between the main shaft of the capsule forming drum and the annular support, includes a sound insulation cotton layer, and the quick exhaust valve of the capsule forming drum is set inside the sound insulation cotton layer.

[0005] Preferably, the sound insulation cotton layer has a ring structure, and the sound insulation cotton layer is coaxially arranged with the main shaft and the ring support.

[0006] More preferably, the inner and outer sides of the sound insulation cotton layer are respectively attached to the main shaft and the annular support, and radially fill the annular gap between the main shaft and the annular support.

[0007] More preferably, the outer side of the sound insulation cotton layer is provided with an annular outer shell, and one end of the annular outer shell away from the middle part of the main shaft is detachably connected to the annular support.

[0008] More preferably, the detachable connection method includes a snap-fit ​​connection.

[0009] More preferably, the inner side of the sound insulation cotton layer is provided with an annular inner shell, which is sleeved on the main shaft, and the inner diameter is not less than the outer diameter of the main shaft.

[0010] More preferably, an end cap is provided between the annular outer shell and the annular inner shell. The end cap is located at one end of the annular outer shell and the annular inner shell away from the middle part of the main shaft, and the end cap has a hollow structure.

[0011] Preferably, the sound insulation cotton layer is divided into multiple regions by multiple radial partitions, and multiple quick-release valves connected to the capsules on the same side of the capsule forming drum are arranged in different regions of the sound insulation cotton layer.

[0012] More preferably, the radial partition plate is provided with perforated holes.

[0013] Preferably, two capsule forming drum noise reduction devices are provided between the main shaft of the capsule forming drum and the annular support. The two capsule forming drum noise reduction devices are respectively set at both ends of the annular support, and multiple quick exhaust valves connected to the capsules on the same side of the capsule forming drum are set in the corresponding sound insulation cotton layer.

[0014] Preferably, the quick-release valve is a three-way valve, with one port connected to a gas source via a gas pipeline, another port connected to a booster capsule or reverse capsule via a gas pipeline, and the last port facing the sound insulation layer.

[0015] More preferably, the gas pipeline includes an external gas pipeline and an internal gas pipeline, with a quick exhaust valve installed on the internal gas pipeline. One end of the external gas pipeline is connected to a gas source, and the other end is detachably connected to the internal gas pipeline. One end of the internal gas pipeline is detachably connected to the external gas pipeline, and the other end is connected to the booster capsule or the reverse capsule.

[0016] More preferably, the end of the internal gas pipeline extends out of the sound insulation cotton layer and is detachably connected to the external gas pipeline.

[0017] More preferably, the quick-release valve is an electromagnetic three-way valve.

[0018] Preferably, the sound insulation cotton layer has a space for accommodating a quick-release valve.

[0019] Preferably, the sound insulation cotton layer has a space for gas pipelines to pass through.

[0020] Preferably, the capsule forming drum includes a main shaft, an annular support, a quick-release valve, a booster capsule, and a reverse-encapsulation capsule;

[0021] The annular support is sleeved on the outside of the main shaft, with an annular gap between it and the main shaft. The booster capsule and the reverse capsule are arranged on the outside of the annular support and connected to a quick-release valve, which is located inside the annular gap.

[0022] More preferably, the capsule forming drum further includes a cylinder;

[0023] The booster capsule is connected to a cylinder that drives its movement, and the cylinder is positioned within an annular gap.

[0024] More preferably, the annular support is provided with a channel for propelling the capsule to move.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. This utility model reduces noise through a sound insulation cotton layer. It has a simple structure, and multiple quick-drain valves can be placed in the same sound insulation cotton layer. There is no need to set up multiple silencers, which can reduce costs. Moreover, the sound insulation cotton area is larger than that of the silencer, making it less prone to clogging and relatively simple to maintain and clean.

[0027] 2. The present invention facilitates the installation and disassembly of the sound insulation cotton layer through the matching of the inner and outer shells, and avoids the risk of the sound insulation cotton layer falling off or failing.

[0028] 3. By setting the end cap, this utility model can effectively prevent the sound insulation cotton layer from bulging when the quick exhaust valve releases gas, and can also improve the overall stability of the noise reduction device and the support effect on the gas pipeline.

[0029] 4. This utility model, through the design of radial partitions, can divide the sound insulation cotton layer into sections, avoiding mutual interference between the quick exhaust valve and its gas pipeline, and can also improve the overall structural stability of the noise reduction device.

[0030] 5. This utility model uses sound-insulating cotton in the annular gap between the main shaft and the annular support to isolate the air, combining the advantages of resistive noise reduction and resistive noise reduction. By comprehensively utilizing the two noise reduction principles, it can achieve noise elimination over a wider frequency band.

[0031] 6. This utility model reduces the noise during exhaust to below 85 decibels, meeting the controllable noise standard stipulated in the Occupational Disease Prevention and Control Law. Attached Figure Description

[0032] Figure 1 This is a schematic diagram illustrating the working principle of the noise reduction device of this utility model;

[0033] Figure 2 Here is a photograph of the actual noise reduction device of this utility model;

[0034] Figure 3 This is a schematic diagram of the structure of the sound insulation cotton layer, the annular outer shell, and the annular inner shell of this utility model;

[0035] Figure 4 This is a schematic diagram of the end cap structure of this utility model;

[0036] Figure 5 This is a schematic diagram of the installation of the noise reduction device of this utility model;

[0037] In the diagram: 1-Main shaft, 2-Annular support, 3-Sound insulation layer, 4-Quick exhaust valve, 5-Annular outer shell, 6-Annular inner shell, 7-End cap, 8-Boosting capsule, 9-Reverse capsule, 10-Cylinder, a-Tire body, b-Tire sidewall. Detailed Implementation

[0038] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. This embodiment is based on the technical solution of the present invention and provides detailed implementation methods and specific operating procedures; however, the scope of protection of the present invention is not limited to the following embodiments.

[0039] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0040] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0041] Example 1

[0042] A noise reduction device for capsule forming drum, such as Figure 1 As shown, it includes a sound insulation cotton layer 3, which is disposed between the main shaft 1 of the capsule forming drum and the annular support 2.

[0043] In this embodiment, as Figure 2 As shown, the inner and outer sides of the sound insulation cotton layer 3 are directly attached to the main shaft 1 and the annular support 2, and the quick exhaust valve 4 of the capsule-shaped drum is directly inserted into the sound insulation cotton layer 3.

[0044] This invention, through the addition of a sound-insulating cotton layer, can simultaneously reduce noise in multiple quick-release valves at low cost and is less prone to clogging.

[0045] Example 2

[0046] A noise reduction device for capsule forming drum, such as Figure 3 As shown, the sound insulation cotton layer 3 has a ring structure and is coaxially arranged with the main shaft 1 and the ring support 2. The inner and outer sides are respectively provided with an inner ring shell 6 and an outer ring shell 5. The sound insulation cotton layer 3 is detachably connected to the ring support 2 through the outer ring shell 5 and is sleeved on the main shaft 1 through the inner ring shell 6.

[0047] The rest is the same as in Example 1.

[0048] This embodiment uses a combination of annular inner shell and annular outer shell to facilitate the installation and removal of the sound insulation cotton layer, and avoids the risk of the sound insulation cotton layer falling off or failing.

[0049] Example 3

[0050] A noise reduction device for capsule forming drum, such as Figure 4 As shown, an end cap 7 is provided between the annular outer shell 5 and the annular inner shell 6, and the end cap 7 has a hollow structure.

[0051] like Figure 5As shown, the gas pipeline connected to the quick-release valve 4 extends through the hollow structure into the sound insulation cotton layer 3.

[0052] The rest is the same as in Example 1.

[0053] In this embodiment, the end cap design effectively prevents the sound insulation cotton layer from bulging out when the quick-release valve releases gas, and also improves the overall stability of the noise reduction device and its support effect on the gas pipeline.

[0054] Example 4

[0055] A noise reduction device for a capsule forming drum is provided on the capsule forming drum, which includes a main shaft 1, an annular support 2, a quick exhaust valve 4, a booster capsule 8, a reverse-packing capsule 9, and a cylinder 10.

[0056] Two annular supports 2 are symmetrically fitted on the outer side of the main shaft 1. An annular gap is left between the inner side of each annular support 2 and the outer side of the main shaft 1. Each annular support 2 is provided with a booster capsule 8 and a reverse capsule 9 on its outer side. The booster capsule 8 is located at the end away from the middle of the main shaft 1, and the reverse capsule 9 is located at the end close to the middle of the main shaft 1. The booster capsule 8 and the reverse capsule 9 are respectively connected to a quick exhaust valve 4 through a gas pipeline. The quick exhaust valve 4 is located in the annular gap. The booster capsule 8 is connected to a cylinder 10 that can drive its movement. The cylinder 10 is also located in the annular gap.

[0057] The capsule forming drum noise reduction device in this embodiment includes a sound-insulating cotton layer 3, which is also disposed within the annular gap. A quick-exhaust valve 4 is inserted into the sound-insulating cotton layer 3. The quick-exhaust valve 4 is a three-way valve, including an air inlet, an air outlet, and an exhaust outlet. The air inlet is connected to an air source via a gas pipeline to provide compressed air. The air outlet is connected to the booster capsule 8 or the reverse capsule 9 via a gas pipeline to inflate the capsule. The exhaust outlet faces the sound-insulating cotton layer 3 to quickly discharge waste gas from the capsule.

[0058] The working principle of the capsule forming drum and noise reduction device in this embodiment is as follows:

[0059] The tire body a is placed on the main shaft 1 between two annular supports 2, and the tire sidewall b is placed on the reverse-wrapping capsule 9. The reverse-wrapping capsule 9 is inflated through the air source, gas pipeline and quick-release valve 4. The reverse-wrapping capsule 9 expands evenly under air pressure, which can evenly wrap the tire sidewall b onto the tire body a. The booster capsule 8 is inflated through the air source, gas pipeline and quick-release valve 4, and the booster capsule 8 is driven by the cylinder 10 to move to the side closer to the middle part of the main shaft 1, which further provides support for the reverse-wrapping capsule 9 and is conducive to the adhesion of the tire sidewall b rubber material. After the tire sidewall b is adhered, the exhaust port of the quick-release valve 4 is opened to allow the reverse-wrapping capsule 9 and the booster capsule 8 to exhaust. The gas is discharged through the sound insulation cotton layer 3 to reduce noise. The reverse-wrapping capsule 9 and the booster capsule 8 return to their initial state and are ready for the next molding.

[0060] This embodiment uses sound-insulating cotton to block the air during exhaust, combining the advantages of reactive and resistive noise reduction. By comprehensively utilizing the two noise reduction principles, it can achieve noise reduction over a wider frequency band, with good reliability, convenience, and feasibility, and has good scalability.

[0061] The above description of the embodiments is provided to enable those skilled in the art to understand and use the utility model. It will be apparent to those skilled in the art that various modifications can be easily made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present utility model is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present utility model without departing from its scope should be within the protection scope of the present utility model.

Claims

1. A noise reduction device for a capsule forming drum, characterized in that, The capsule forming drum is located between the main shaft (1) and the annular support (2), including a sound insulation cotton layer (3), and the quick exhaust valve (4) of the capsule forming drum is located inside the sound insulation cotton layer (3).

2. The capsule forming drum noise reduction device according to claim 1, characterized in that, The sound insulation cotton layer (3) has a ring structure and is coaxially arranged with the main shaft (1) and the ring support (2).

3. The capsule forming drum noise reduction device according to claim 2, characterized in that, The sound insulation cotton layer (3) is provided with an annular shell (5) on the outside. One end of the annular shell (5) away from the middle part of the main shaft (1) is detachably connected to the annular support (2).

4. The capsule forming drum noise reduction device according to claim 3, characterized in that, The sound insulation cotton layer (3) has an annular inner shell (6) on its inner side. The annular inner shell (6) is fitted on the main shaft (1) and its inner diameter is not less than the outer diameter of the main shaft (1).

5. The capsule forming drum noise reduction device according to claim 4, characterized in that, An end cap (7) is provided between the annular outer shell (5) and the annular inner shell (6). The end cap (7) is located at one end of the annular outer shell (5) and the annular inner shell (6) away from the middle part of the main shaft (1). The end cap (7) has a hollow structure.

6. The capsule forming drum noise reduction device according to claim 1, characterized in that, The sound insulation cotton layer (3) is divided into multiple regions by multiple radial partitions, and multiple quick-release valves (4) connected to the capsules on the same side of the capsule forming drum are set in different regions of the sound insulation cotton layer (3).

7. The capsule forming drum noise reduction device according to claim 1, characterized in that, Two capsule forming drum noise reduction devices are provided between the main shaft (1) of the capsule forming drum and the annular support (2). The two capsule forming drum noise reduction devices are respectively set at both ends of the annular support (2). Multiple quick exhaust valves (4) connected to the capsules on the same side of the capsule forming drum are set in the corresponding sound insulation cotton layer (3).

8. The capsule forming drum noise reduction device according to claim 1, characterized in that, The quick-release valve (4) is a three-way valve. One port of the three-way valve is connected to the gas source through a gas pipeline, the other port is connected to the booster capsule (8) or the reverse capsule (9) through a gas pipeline, and the last port faces the sound insulation cotton layer (3).

9. The capsule forming drum noise reduction device according to claim 8, characterized in that, The gas pipeline includes an external gas pipeline and an internal gas pipeline. The quick exhaust valve (4) is installed on the internal gas pipeline. One end of the external gas pipeline is connected to the gas source, and the other end is detachably connected to the internal gas pipeline. One end of the internal gas pipeline is detachably connected to the external gas pipeline, and the other end is connected to the booster capsule (8) or the reverse capsule (9).

10. The capsule forming drum noise reduction device according to claim 1, characterized in that, The capsule forming drum includes a main shaft (1), an annular support (2), a quick exhaust valve (4), a booster capsule (8), a reverse-encapsulation capsule (9), and a cylinder (10); The annular support (2) is sleeved on the outside of the main shaft (1) with an annular gap between it and the main shaft (1). The booster capsule (8) and the reverse capsule (9) are set on the outside of the annular support (2) and connected to a quick exhaust valve (4). The quick exhaust valve (4) is set in the annular gap. The booster capsule (8) is connected to a cylinder (10) that can drive its movement. The cylinder (10) is set in the annular gap.

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