Mould preheating system of vulcanization steam pipeline
By connecting 10kg and 17kg steam pipes in the vulcanized steam pipeline system and using PLC control to achieve steam pressure switching, the problems of low preheating efficiency and high energy consumption of vulcanized steam pipeline molds are solved, and fast and energy-saving mold preheating is achieved. Improves vulcanization efficiency and reduces the occurrence of tire undervulcanization.
Patent Information
- Application Number
- CN202420207151.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-29
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-01-29
AI Technical Summary
The existing vulcanized steam pipe mold preheating system is low in efficiency and high energy consumption, resulting in long preheating time of mold and difficult to meet the standard, resulting in tire under-vulcanization and loss of production efficiency.
The parallel system of 10kg and 17kg steam pipelines is adopted to switch steam pressure through PLC control, and the high temperature is used to quickly preheat the mold. After the preheating is completed, the steam transfer path and valve are optimized. Configuration to reduce heat loss.
The mold preheating time is shortened to 30 to 40 minutes, which improves vulcanization efficiency and reduces energy consumption, ensures that the mold temperature reaches the standard, and reduces the occurrence of tire undervulcanization.
Smart Images
Figure CN222178776U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of preheating, in particular to a mold preheating system of a vulcanization steam pipeline. Background Art
[0002] After the molding process of the raw tire is completed, it needs to be vulcanized before it can become a tire. The vulcanization process is to heat and pressurize the molded raw tire for a certain period of time. The rubber components inside the tire undergo physical and chemical reactions to become the tire used by our vehicles.
[0003] During the vulcanization process, because a vulcanizer needs to vulcanize tires of different specifications, the mold needs to be replaced. Because the temperature of the cold mold is lower after the replacement, the cold mold needs to be preheated for a certain period of time after the mold is replaced. The mold preheating part of the vulcanization steam pipeline is the part that plays a preheating role. It can only be vulcanized normally after being preheated to the temperature we need. The longer mold preheating process is a waste of production efficiency.
[0004] The temperature of the cold mold after replacement is 18-35℃ at room temperature, while the mold temperature required for the normal vulcanization process is 160-178℃, so the mold needs to be preheated. High-pressure steam is used for mold preheating. The mold is mounted on a mold sleeve, and a cavity for steam circulation is processed on the mold sleeve. The mold is heated by steam circulation. The steam temperature is 178℃. It usually takes 90-120min for the mold preheating temperature to rise from room temperature to 178℃ (depending on the size of the tire, the preheating time for small-sized tires is short, and the preheating time for large-sized tires is long). For a tire factory with a general production capacity of about 30,000 tires, the mold exchange parameters reach about 60 times a day, so the time lost due to mold preheating is 5400-7200min a day. According to the average vulcanization time of a single tire of 10min, the efficiency loss is 540-720 tires a day, and the efficiency loss is 186,300-248,400 tires a year, which is a huge efficiency impact on the factory.
[0005] Because the steam temperature is 178℃, and there is bound to be energy loss during the energy transfer process, it is difficult for the mold to reach the standard 178℃. Moreover, when the mold temperature rises to above 170℃, the mold temperature is too close to the steam temperature, causing the mold temperature to rise very slowly. (According to temperature measurement experience: it takes 10 minutes for each 1℃ increase in temperature)
[0006] If the mold is not preheated sufficiently, resulting in a low mold temperature or failing to reach the required temperature, the green tire will not be fully vulcanized, resulting in under-vulcanized waste products, and will also cause certain economic losses.
[0007] Through the temperature measurement research on the vulcanization mold preheating process, it was found that there are big problems in the mold preheating process. Long-term preheating will first cause efficiency loss; secondly, it will also cause steam energy loss; if the mold temperature rises slowly or fails to reach the standard temperature, it will also cause the generation of scrap tires.
[0008] That is to say, the existing preheating technology mainly has the problems of low efficiency and high energy consumption. In addition, there are also problems such as the mold temperature easily failing to reach the standard temperature and the tire being under-vulcanized and rejected due to insufficient mold preheating temperature.
[0009] Therefore, in view of the shortcomings of the above scheme in actual production and implementation, it is revised and improved. At the same time, in the spirit and concept of seeking excellence, with the assistance of professional knowledge and experience, and after many ingenuity and experiments, the utility model is created. A mold preheating system for a vulcanizing steam pipeline is provided. By shortening the mold preheating time and increasing the mold preheating temperature, the purpose of energy saving and efficiency improvement is achieved, which is used to solve the technical problems of low efficiency and high energy consumption of existing preheating technologies. Utility Model Content
[0010] The purpose of the utility model is to provide a mold preheating system for a vulcanization steam pipeline, which is used to solve the technical problems of low efficiency and high energy consumption of existing preheating technologies. The specific problems to be solved also include:
[0011] 1. Solve the problem of efficiency loss caused by long mold preheating time;
[0012] 2. Solve the problem that the mold temperature cannot reach the standard temperature due to the loss of steam transfer energy;
[0013] 3. Solve the problem of under-vulcanized tire waste caused by insufficient mold preheating temperature.
[0014] The technical solution of the utility model is achieved in this way:
[0015] The mold preheating system of the vulcanization steam pipeline comprises a mold preheating steam pipeline, the mold preheating steam pipeline is connected with a 10kg steam pipeline, the 10kg steam pipeline is sequentially provided with a first starting film regulating valve, a first filter, and a first stop valve, the end of the 10kg steam pipeline is connected with a first control gas source, the first starting film regulating valve is connected with a first return pipeline, the first return pipeline is provided with a first electrical converter and a first valve, the first electrical converter is communicatively connected with a PLC,
[0016] The mold preheating steam pipeline is connected to a 17kg steam pipeline, and the 17kg steam pipeline is connected in parallel with the 10kg steam pipeline. The 17kg steam pipeline is sequentially provided with a second starting membrane regulating valve, a second filter, and a second stop valve. The end of the 17kg steam pipeline is connected to a second control air source, and the second starting membrane regulating valve is connected to a second return pipeline. The second return pipeline is provided with a second electrical converter and a second valve, and the second electrical converter is communicatively connected to a PLC. The first return pipeline and the second return pipeline are commonly connected to a total return pipeline, and a one-way valve is provided on the 10kg steam pipeline.
[0017] The connection and communication of each part is generally achieved by using pipelines, which is the same as the prior art.
[0018] There are generally two types of vulcanization steam pressure. One is 10kg, which is the pressure currently used for preheating the side panels and molds. The temperature of 10kg pressure can reach about 178°C. During the normal vulcanization process, steam also needs to be introduced into the capsule. This steam is 17kg and the temperature reaches 206°C. The reason for choosing 17kg steam is that the equipment is shut down when the mold is preheating, and the 17kg pressure in the vulcanization capsule can be used temporarily to preheat the mold. After the preheating is completed and the vulcanization is carried out normally, the mold is preheated with steam and returns to 10kg. 17kg steam is still used in the vulcanization capsule, which will not affect normal operations and is more convenient to use. If 20kg / 15kg is used, it may be necessary to convert the pressure or supply steam separately.
[0019] As a preferred implementation, a first ball valve is provided on the first filter, and a second ball valve is provided on the second filter.
[0020] As a preferred implementation, the first valve is a three-way valve, and the second valve is a three-way valve.
[0021] The beneficial effects of the utility model are:
[0022] The utility model can shorten the vulcanization mold preheating time to about 30-40 minutes and the vulcanization preheating time to 60-90 minutes by optimizing and realizing the switching use of 10kg and 17kg steam. The purpose of energy saving and efficiency improvement is achieved by shortening the mold preheating time and increasing the mold preheating temperature, optimizing the vulcanization efficiency and saving the vulcanization energy consumption, and solving the technical problems of low efficiency and high energy consumption of the existing preheating technology.
[0023] The specific beneficial effects are reflected in:
[0024] 1. Greatly shorten the preheating time of the vulcanization mold and improve the vulcanization efficiency;
[0025] 2. Shortening the steam preheating time reduces the steam volume, thereby reducing the energy consumption of vulcanization;
[0026] 3. The mold preheating temperature can reach the standard temperature to reduce the occurrence of poor vulcanization. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0028] Figure 1 It is a schematic diagram of the principle of the prior art vulcanization pipeline;
[0029] Figure 2 This is a schematic diagram of the pipeline connection of the utility model.
[0030] In the figure, 1-mold preheating steam pipeline; 2-one-way valve; 3-10kg steam pipeline; 4-first start-up diaphragm regulating valve; 5-first electrical converter; 6-first valve; 7-first reflux pipeline; 8-first filter; 9-first ball valve; 10-first stop valve; 11-first control air source; 12-17kg steam pipeline; 13-second start-up diaphragm regulating valve; 14-second electrical converter; 15-second valve; 16-second reflux pipeline; 17-second filter; 18-second ball valve; 19-second stop valve; 20-second control air source; 21-total reflux pipeline. DETAILED DESCRIPTION
[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.
[0032] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0033] In addition, the descriptions of "first", "second", etc. in the present invention are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features.
[0034] In the description of the embodiments, unless otherwise clearly specified and limited, the terms "disposed", "connected" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, or an electrical connection; it can be a direct connection, or it can be connected through an intermediate medium, or it can be a communication between two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0035] See also Figure 1 , A in the principle diagram of the vulcanization pipeline is the preheating part of the existing vulcanization technology center, and the utility model is an improvement on this part.
[0036] See also Figure 2 The mold preheating system of the vulcanization steam pipeline includes a mold preheating steam pipeline 1, the mold preheating steam pipeline 1 is connected to a 10kg steam pipeline 3, the 10kg steam pipeline 3 is sequentially provided with a first starting film regulating valve 4, a first filter 8, and a first stop valve 10, the end of the 10kg steam pipeline 3 is connected to a first control gas source 11, the first starting film regulating valve 4 is connected to a first return pipeline 7, the first return pipeline 7 is provided with a first electrical converter 5 and a first valve 6, and the first electrical converter 5 is communicatively connected to a PLC,
[0037] The mold preheating steam pipeline 1 is connected to a 17kg steam pipeline 12, which is connected in parallel with a 10kg steam pipeline 3. A second starting membrane regulating valve 13, a second filter 17, and a second stop valve 19 are sequentially arranged on the 17kg steam pipeline 12. A second control gas source 20 is connected to the end of the 17kg steam pipeline 12. The second starting membrane regulating valve 13 is connected to a second return pipeline 16. A second electrical converter 14 and a second valve 15 are arranged on the second return pipeline 16. The second electrical converter 14 is communicatively connected to a PLC. The first return pipeline 7 and the second return pipeline 16 are commonly connected to a total return pipeline 21. A one-way valve 2 is arranged on the 10kg steam pipeline 3.
[0038] The connection and communication of each part is generally achieved by using pipelines, which is the same as the prior art.
[0039] There are generally two types of vulcanization steam pressure. One is 10kg, which is the pressure currently used for preheating the side panels and molds. The temperature of 10kg pressure can reach about 178°C. During the normal vulcanization process, steam also needs to be introduced into the capsule. This steam is 17kg and the temperature reaches 206°C. The reason for choosing 17kg steam is that the equipment is shut down when the mold is preheating, and the 17kg pressure in the vulcanization capsule can be used temporarily to preheat the mold. After the preheating is completed and the vulcanization is carried out normally, the mold is preheated with steam and returns to 10kg. 17kg steam is still used in the vulcanization capsule, which will not affect normal operations and is more convenient to use. If 20kg / 15kg is used, it may be necessary to convert the pressure or supply steam separately.
[0040] See also Figure 2 The first filter 8 is provided with a first ball valve 9 , and the second filter 17 is provided with a second ball valve 18 .
[0041] See also Figure 2 The first valve 6 is a three-way valve, and the second valve 15 is a three-way valve.
[0042] The first control gas source 11 and the second control gas source 20 are responsible for providing 10 kg and 17 kg of steam respectively.
[0043] The utility model optimizes the sulfide steam pipeline ( Figure 1 A in the middle is before optimization), add a 17kg steam pipe to the mold preheating steam pipe 1 (see Figure 2 ), the 17kg steam first passes through the second stop valve 19 to facilitate manual closing of the steam channel, and then passes through a second filter 17 with a second ball valve 18 to remove impurities in the steam, and finally passes through the second starting membrane regulating valve 13 and the PLC control unit. The second starting membrane regulating valve 13 realizes the stability of the 17kg steam pressure, and the PLC unit realizes the switching of the 10kg and 17kg steam pipelines 12.
[0044] When the molds are alternated, the steam pipeline is closed through the operation panel. After the molds are replaced, the mold preheating starts by clicking on the computer screen (PLC control program optimization). The mold preheating pipeline is automatically switched to 17kg steam preheating. In order to prevent the high-pressure steam from passing through the 10kg steam pipeline 3 and causing heat loss, a one-way valve 2 is added to the 10kg steam pipeline 3. After 20-25 minutes of 17kg steam passing through, it is automatically switched to the 10kg steam pipeline 3 for preheating (the pipeline switching can be controlled by the time relay). The high-pressure steam preheating time can be set according to the different specifications of tires. The 17kg steam pressure can provide a temperature of 206℃, which can quickly make the mold preheating temperature reach above 170℃. Before reaching the standard mold preheating temperature, the steam pipeline is switched in advance through PLC control, and then the 10kg steam temperature is passed through to provide a temperature of 178℃. After a period of 10kg steam stabilization, the mold temperature is stabilized at the standard temperature, and normal preheating and subsequent vulcanization operations are carried out.
[0045] The beneficial effects of the utility model are:
[0046] The utility model can shorten the vulcanization mold preheating time to about 30-40 minutes and the vulcanization preheating time to 60-90 minutes by optimizing and realizing the switching use of 10kg and 17kg steam. The purpose of energy saving and efficiency improvement is achieved by shortening the mold preheating time and increasing the mold preheating temperature, optimizing the vulcanization efficiency and saving the vulcanization energy consumption, and solving the technical problems of low efficiency and high energy consumption of the existing preheating technology.
[0047] The specific beneficial effects are reflected in:
[0048] 1. Greatly shorten the preheating time of the vulcanization mold and improve the vulcanization efficiency;
[0049] 2. Shortening the steam preheating time reduces the steam volume, thereby reducing the energy consumption of vulcanization;
[0050] 3. The mold preheating temperature can reach the standard temperature to reduce the occurrence of poor vulcanization.
[0051] The above is only a preferred embodiment of the utility model, and is not intended to limit the utility model. 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. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement; when the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the utility model.
Claims
1. A mold preheating system for a vulcanization steam pipeline, comprising a mold preheating steam pipeline, the mold preheating steam pipeline is connected to a 10kg steam pipeline, the 10kg steam pipeline is sequentially provided with a first starting film regulating valve, a first filter, and a first stop valve, the end of the 10kg steam pipeline is connected to a first control gas source, the first starting film regulating valve is connected to a first return pipeline, the first return pipeline is provided with a first electrical converter and a first valve, the first electrical converter is communicatively connected to a PLC, It is characterized in that The mold preheating steam pipeline is connected to a 17kg steam pipeline, and the 17kg steam pipeline is connected in parallel with the 10kg steam pipeline. The 17kg steam pipeline is sequentially provided with a second starting membrane regulating valve, a second filter, and a second stop valve. The end of the 17kg steam pipeline is connected to a second control air source, and the second starting membrane regulating valve is connected to a second return pipeline. The second return pipeline is provided with a second electrical converter and a second valve, and the second electrical converter is communicatively connected to a PLC. The first return pipeline and the second return pipeline are commonly connected to a total return pipeline, and a one-way valve is provided on the 10kg steam pipeline.
2. The mold preheating system for a vulcanization steam pipeline according to claim 1, characterized in that: The first filter is provided with a first ball valve, and the second filter is provided with a second ball valve.
3. The mold preheating system for a vulcanization steam pipeline according to claim 1, characterized in that: The first valve is a three-way valve, and the second valve is a three-way valve.