A quick exhaust system for a truck tire building machine

Abstract

This invention proposes a rapid exhaust system for a heavy-duty tire forming machine. The system includes an air storage and filtration unit whose air output is connected to the air inputs of the chassis-side reverse-wrapping unit, the tail frame-side reverse-wrapping unit, and the internal pressure inflation unit; the air output of the internal pressure inflation unit is connected to the air input of the support block unit; the air input of the rapid internal pressure exhaust unit is connected to the air outputs of the chassis-side reverse-wrapping unit, the tail frame-side reverse-wrapping unit, and the support block unit; and the air output of the rapid internal pressure exhaust unit is connected to the air input of the air storage and filtration unit. This invention improves the efficiency of internal pressure exhaust by adding a rapid external exhaust valve. These modifications, applied to the tire forming process, enhance forming accuracy and production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic control technology, specifically a rapid exhaust system for a heavy-duty tire forming machine. Background Technology

[0002] Tire carcasses are formed by tire forming machines. Tire forming machines generally include belt drums, tread feeders, forming drums, carcass drums, carcass feeders, and transfer rings. In the tire forming drum, the timing of the venting pipe of the internal pressure booster block is directly related to the key stages of the forming process; its core function is to precisely control the internal air pressure during the tire carcass forming process. In the CN119820902A tire forming machine and tire forming method application, although the tire carcass is rolled and formed using components such as a reverse-wrapped bladder, forming drum, and rear pressure roller, the deflating time is relatively long, which does not meet the efficiency requirements of industrial production. Therefore, it is urgent for those skilled in the art to solve the corresponding technical problems. Utility Model Content

[0003] This utility model aims to at least solve the technical problems existing in the prior art, and in particular, it innovatively proposes a rapid exhaust system for a heavy-duty tire forming machine.

[0004] To achieve the above-mentioned objectives of this utility model, this utility model provides a rapid exhaust system for a heavy-duty tire forming machine, including an internal pressure rapid exhaust unit, which includes an internal pressure rapid exhaust solenoid valve and a reverse wrapping rapid exhaust solenoid valve.

[0005] Among them, the air output end of the internal pressure quick exhaust solenoid directional valve and the air output end of the reverse wrap quick exhaust solenoid directional valve are respectively connected to the booster exhaust air pipe and then connected to the quick exhaust valve.

[0006] When rapid discharge is required, the rapid discharge valve opens.

[0007] In a preferred embodiment of this utility model, it further includes: an air storage and filtration unit, a support block unit, a chassis side reverse wrapping unit, a tail frame side reverse wrapping unit, and an internal pressure inflation unit;

[0008] The air output of the air storage filter unit is connected to the air input of the chassis-side reverse packaging unit, the air input of the tailstock-side reverse packaging unit, and the air input of the internal pressure inflation unit.

[0009] The air output end of the internal pressure inflation unit is connected to the air input end of the support block unit;

[0010] The air input terminal of the internal pressure quick exhaust unit is connected to the air output terminal of the chassis-side reverse wrapping unit, the air output terminal of the tailstock-side reverse wrapping unit, and the air output terminal of the support block unit;

[0011] The air output of the internal pressure quick exhaust unit is connected to the air input of the air storage filter unit.

[0012] In a preferred embodiment of this utility model, the air storage and filtration unit includes: an air tank, a pneumatic triplet, and an air storage and filtration unit pressure regulating valve. The air output end of the air tank is connected to the air input end of the pneumatic triplet, and the air output end of the pneumatic triplet is connected to the air input end of the air storage and filtration unit pressure regulating valve. The air output end of the air storage and filtration unit pressure regulating valve is connected to the air input ends of the chassis-side reverse pressure valve, the tailstock-side reverse pressure valve, and the internal pressure inflation check valve. The first digital signal output of the programmable logic controller is connected to the adjustment signal input end of the air storage and filtration unit pressure regulating valve.

[0013] In a preferred embodiment of this utility model, the support block unit includes: a support block raising and lowering solenoid valve, a support block pressure regulating solenoid valve, and a support block raising pressure switch. The air input terminal of the support block raising and lowering solenoid valve is connected to the air output terminal of the support block pressure regulating solenoid valve; the air input terminal of the support block pressure regulating solenoid valve is connected to the air output terminal of the internal pressure charging solenoid valve; the air input terminal of the support block raising pressure switch is connected to the air output terminal of the support block raising and lowering solenoid valve; the air output terminal of the support block raising pressure switch is connected to the air input terminals of the internal pressure quick-release solenoid valve and the reverse quick-release solenoid valve; the second digital signal output terminal of the programmable logic controller (PLC) is connected to the raising and lowering signal input terminal of the support block raising and lowering solenoid valve; the third digital signal output terminal of the PLC is connected to the regulating signal input terminal of the support block pressure regulating solenoid valve; and the fourth digital signal output terminal of the PLC is connected to the switching signal input terminal of the support block raising pressure switch.

[0014] In a preferred embodiment of this utility model, the chassis-side reverse packaging unit includes: a chassis-side lifting solenoid valve, a chassis-side pressure regulating solenoid valve, a chassis-side vacuum one-way solenoid valve, a chassis-side reverse packaging pressure switch, and a chassis-side reverse packaging pressure valve. The air input terminal of the chassis-side reverse packaging pressure valve is connected to the air output terminal of the air storage and filtration unit pressure regulating valve; the air output terminal of the chassis-side reverse packaging pressure valve is connected to the air input terminal of the chassis-side pressure regulating solenoid valve; the air output terminal of the chassis-side pressure regulating solenoid valve is connected to the air input terminal of the chassis-side lifting solenoid valve; the air output terminal of the chassis-side lifting solenoid valve is connected to the air input terminals of the chassis-side reverse packaging pressure switch and the chassis-side vacuum one-way solenoid valve; and the air output terminal of the chassis-side vacuum one-way solenoid valve is connected to a vacuum pump. The air output terminal of the force switch is connected to the air input terminals of the internal pressure quick-release solenoid directional valve and the reverse pressure quick-release solenoid directional valve. During the process, the programmable logic controller (PLC) sends pulse width modulation waveform signals to control the chassis-side lifting solenoid directional valve and the chassis-side pressure regulating solenoid directional valve. The fifth digital signal output terminal of the PLC is connected to the lifting signal input terminal of the chassis-side lifting solenoid directional valve. The sixth digital signal output terminal of the PLC is connected to the regulating signal input terminal of the chassis-side pressure regulating solenoid directional valve. The seventh digital signal output terminal of the PLC is connected to the switch signal input terminal of the chassis-side vacuum check solenoid valve. The eighth digital signal output terminal of the PLC is connected to the switch signal input terminal of the chassis-side reverse pressure switch. The ninth digital signal output terminal of the PLC is connected to the switch signal input terminal of the chassis-side reverse pressure valve.

[0015] In a preferred embodiment of this utility model, the tailstock-side reverse-packing unit includes: a tailstock-side lifting solenoid valve, a tailstock-side pressure regulating solenoid valve, a tailstock-side reverse-packing pressure switch, and a tailstock-side reverse-packing pressure valve. The air input terminal of the tailstock-side reverse-packing pressure valve is connected to the air output terminal of the pressure regulating valve of the air storage and filtration unit; the air output terminal of the tailstock-side reverse-packing pressure valve is connected to the air input terminal of the tailstock-side pressure regulating solenoid valve; the air output terminal of the tailstock-side pressure regulating solenoid valve is connected to the air input terminal of the tailstock-side lifting solenoid valve; and the air output terminal of the tailstock-side lifting solenoid valve is connected to the air input terminal of the tailstock-side reverse-packing pressure switch. The air input terminal of the vacuum one-way solenoid valve on the chassis side is connected to the air output terminal of the tailstock side reverse pressure switch, which is connected to the air input terminals of the internal pressure quick-release solenoid directional valve and the reverse pressure quick-release solenoid directional valve. The fifth digital signal output terminal of the programming logic controller is connected to the lifting signal input terminal of the tailstock side lifting solenoid directional valve. The sixth digital signal output terminal of the programming logic controller is connected to the regulating signal input terminal of the tailstock side pressure regulating solenoid directional valve. The eighth digital signal output terminal of the programming logic controller is connected to the switch signal input terminal of the tailstock side reverse pressure switch. The ninth digital signal output terminal of the programming logic controller is connected to the switch signal input terminal of the tailstock side reverse pressure valve.

[0016] In a preferred embodiment of this utility model, the air input terminal of the internal pressure quick-exhaust solenoid directional valve is connected to the air output terminal of the chassis-side reverse pressure switch, the air output terminal of the tailstock-side reverse pressure switch, and the air output terminal of the support block lifting pressure switch; the air input terminal of the reverse pressure quick-exhaust solenoid directional valve is connected to the air output terminal of the chassis-side reverse pressure switch, the air output terminal of the tailstock-side reverse pressure switch, and the air output terminal of the support block lifting pressure switch; the air input terminal of the air storage filter unit pressure regulating valve is connected to the air output terminals of the internal pressure quick-exhaust solenoid directional valve and the reverse pressure quick-exhaust solenoid directional valve; and the 10th digital signal output terminal of the programming logic controller is connected to the switch signal input terminal of the internal pressure quick-exhaust solenoid directional valve and the switch signal input terminal of the reverse pressure quick-exhaust solenoid directional valve.

[0017] In a preferred embodiment of this utility model, the internal pressure inflation unit includes: an internal pressure inflation solenoid directional valve and an internal pressure inflation check valve, wherein the air input end of the internal pressure inflation check valve is connected to the air output end of the pressure regulating valve of the air storage and filtration unit, the air input end of the internal pressure inflation solenoid directional valve is connected to the air output end of the internal pressure inflation check valve, the air output end of the internal pressure inflation solenoid directional valve is connected to the air input end of the support block pressure regulating solenoid directional valve, and the 11th digital signal output end of the programming logic controller is connected to the regulating signal input end of the internal pressure inflation solenoid directional valve.

[0018] In a preferred embodiment of this utility model, a booster cylinder unit is further comprising: a booster cylinder body, a booster cylinder input pipeline, a booster cylinder output pipeline, and a booster cylinder one-way solenoid valve. The air input end of the booster cylinder input pipeline is connected to the air output end of the pressure regulating valve of the air storage and filtration unit; the air output end of the booster cylinder input pipeline is connected to the air inlet compression port of the booster cylinder body and the air input end of the booster cylinder one-way solenoid valve; the air input end of the booster cylinder output pipeline is connected to the air outlet booster port of the booster cylinder body and the air output end of the booster cylinder one-way solenoid valve; the air output end of the booster cylinder output pipeline is connected to the air input end of the support block pressure regulating solenoid reversing valve; and the 12th digital signal output terminal of the programming logic controller is connected to the switch signal input terminal of the booster cylinder one-way solenoid valve.

[0019] In a preferred embodiment of this utility model, the internal pressure protection relay further includes: an internal pressure protection solenoid directional valve, wherein the air input terminal of the internal pressure protection solenoid directional valve is connected to the air output terminal of the pressure regulating valve of the air storage filter unit, the air output terminal of the internal pressure protection solenoid directional valve is connected to the air input terminals of the reverse quick-release solenoid directional valve and the internal pressure quick-release solenoid directional valve, and the 13th digital signal output terminal of the programming logic controller is connected to the switch signal input terminal of the internal pressure protection solenoid directional valve.

[0020] In a preferred embodiment of this utility model, the spindle brake further includes: a spindle brake pressure switch, a spindle brake pressure regulating valve, and a spindle brake pressure, wherein the switch signal output terminal of the spindle pressure switch is connected to the servo motor drive signal input terminal, the switch signal input terminal of the spindle pressure switch is connected to the regulating signal output terminal of the spindle brake pressure regulating valve, and the regulating signal input terminal of the spindle brake pressure regulating valve is connected to the switch signal output terminal of the spindle brake pressure.

[0021] In summary, due to the adoption of the above technical solutions, the beneficial effects of this utility model are as follows: The use of a fast external discharge valve to discharge internal pressure improves the efficiency of internal pressure discharge; the additional air storage and filtration unit provides stable gas pressure to the internal pressure inflation unit, support block unit, chassis-side reverse wrapping unit, and tail frame-side reverse wrapping unit, precisely controlling the pressure according to process requirements, making the tire forming process more efficient and smooth. The support block unit adjusts the specific pressure according to the support block pressure requirements of the steel wire bead, ensuring the tire bead is firmly locked in the set position, preventing tire bead displacement that could lead to bead deformation or air bubbles, reducing scrap rate, and indirectly improving production efficiency. Internal pressure inflation creates a uniform air pressure field inside the drum, ensuring stable pressure in the support block unit, allowing materials such as the cord fabric and tread to tightly adhere to the drum surface, eliminating air bubbles and creases; after the reverse wrapping bladder is inflated to the process-set pressure value, the reverse wrapping arm automatically extends to reverse wrap the tire sidewall, and the rear pressure roller rolls the tire sidewall to further remove excess gas, ensuring tight material adhesion and guaranteeing the quality of the tire blank forming. The solenoid valves for regulating pressure on the chassis side and tailstock side can adjust the pressure according to process requirements. Both the chassis-side and tailstock-side reverse-wrapping pressure switches are equipped with pressure gauges to detect the internal air pressure of the reverse-wrapping bladder, ensuring appropriate pressure during the reverse-wrapping process and preventing air bubbles from remaining between the sidewall rubber and the cord fabric. The pressure rollers ensure that the sidewall rubber material evenly wraps around the bead wires, enhancing structural integrity and improving tire quality. The main shaft brake pressure switch, controlled by a solenoid valve, enables rapid and effective braking of the main shaft. The main shaft brake pressure regulating valve is used to precisely adjust the braking system pressure to adapt to braking requirements under different working conditions. The main shaft brake pressure is used to detect the pressure during main shaft braking, ensuring the normal operation of the braking system and guaranteeing the stable operation of the molding machine. The internal pressure protection relay, as a key safety component of the air pressure control system, monitors the reverse-wrapping bladder pressure status in real time through electrical logic, implementing a rapid protective response to abnormal pressure, ensuring the safety of the equipment and tire blank, and preventing equipment damage or tire blank molding failure due to abnormal pressure. The support block pressure regulating solenoid valve, based on the support block pressure requirements of the steel wire ring, sends a signal to the support block pressure regulating solenoid valve via a programmable logic controller to adjust the specific pressure value of the support block to the manufacturing process value. The chassis-side and tailstock-side pressure regulating solenoid valves can adjust the pressure according to process requirements, meeting the diverse pressure requirements during the forming process of different tire specifications, offering flexible and convenient operation. These technological improvements work together in the tire forming process, helping to improve production efficiency. The support block lifting and lowering solenoid valve controls the lifting and lowering of the support block through the opening and closing of the control port. The chassis-side and tailstock-side lifting and lowering solenoid valves are connected to the inner cavity of the bladder to control the lifting and lowering of the bladder. Each unit is precisely controlled, allowing operators to easily adjust and control according to actual conditions.

[0022] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0023] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0024] Figure 1 This is a schematic diagram of the main body unit of the molding drum of this utility model;

[0025] Figure 2 This is a schematic diagram of the spindle brake of this utility model;

[0026] Figure 3 This is a schematic diagram of the internal pressure quick-release system of this utility model;

[0027] Figure 4 This is a schematic diagram of the internal pressure protection relay of this utility model;

[0028] Figure 5 This is a schematic diagram of the support block unit of this utility model;

[0029] Figure 6 This is a schematic diagram of the chassis side reverse packaging unit and the tail frame side reverse packaging unit of this utility model;

[0030] Figure 7 This is a schematic diagram of the air storage and filtration unit of this utility model;

[0031] Figure 8 This is a schematic diagram of the internal pressure inflation unit of this utility model;

[0032] Figure 9 This is a schematic diagram of the booster cylinder of this utility model;

[0033] Figure 10 This is a schematic diagram illustrating the application of this utility model;

[0034] Figure 11 This is a schematic diagram of the overall pneumatic principle of the molded drum of this utility model. Detailed Implementation

[0035] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0036] This utility model discloses a rapid exhaust system for a heavy-duty tire forming machine, such as... Figure 1 , 10As shown in Figure 11, it includes: an air storage and filtration unit, a support block unit, a chassis-side reverse wrapping unit, a tailstock-side reverse wrapping unit, an internal pressure quick exhaust unit, and an internal pressure inflation unit;

[0037] The air output of the air storage filter unit is connected to the air input of the chassis-side reverse packaging unit, the air input of the tailstock-side reverse packaging unit, and the air input of the internal pressure inflation unit.

[0038] The air output end of the internal pressure inflation unit is connected to the air input end of the support block unit;

[0039] The air input terminal of the internal pressure quick exhaust unit is connected to the air output terminal of the chassis-side reverse wrapping unit, the air output terminal of the tailstock-side reverse wrapping unit, and the air output terminal of the support block unit;

[0040] The air output of the internal pressure quick exhaust unit is connected to the air input of the air storage filter unit.

[0041] The tire carcass and other materials formed from the tire blank are picked up and transferred to the forming drum by a transfer ring according to the design requirements. The air storage and filtration unit outputs air, and the internal pressure is inflated. The support block unit is inflated to tightly fit the support block against the left and right steel wire rings and lock them in place. The reverse wrapping bladders of the machine side reverse wrapping unit and the tail frame side reverse wrapping unit are inflated. As the reverse wrapping bladder is inflated to the process set pressure value, the servo motor in the forming drum machine box rotates at high speed, and the reverse wrapping arm automatically extends to reverse wrap the tire side. The rear pressure roller rolls the tire side and shapes it through internal pressure. The reverse wrapping bladder and arm reverse wrap, and the rear pressure roller rolls to remove excess air, making the materials fit tightly together, thereby forming various semi-parts into the shape of the tire blank.

[0042] Once the embryo is formed, the internal pressure and the pressure inside the reverse capsule need to be released. The gas inside the reverse capsule will be quickly discharged through the internal pressure rapid discharge unit.

[0043] During the release of internal pressure, the support block will continue to provide support, ensuring the stability and precision of the tire shape;

[0044] like Figure 2 The diagram shown is of the main spindle brake, including:

[0045] The switch signal output terminal of the spindle pressure switch is connected to the servo motor drive signal input terminal, the switch signal input terminal of the spindle pressure switch is connected to the adjustment signal output terminal of the spindle brake pressure regulating valve, and the adjustment signal input terminal of the spindle brake pressure regulating valve is connected to the switch signal output terminal of the spindle brake pressure.

[0046] Main spindle brake pressure switch: Controlled by a solenoid valve, it enables rapid and effective braking of the main spindle, ensuring stable operation of the molding machine;

[0047] Spindle brake pressure regulating valve: used to precisely regulate the pressure of the braking system to meet the braking requirements under different working conditions;

[0048] Spindle braking pressure: Used to detect the pressure during spindle braking to ensure the normal operation of the braking system.

[0049] like Figure 3 The diagram shown is a schematic of internal pressure rapid discharge, including:

[0050] The air input terminal of the internal pressure quick-exhaust solenoid directional valve is connected to the air output terminal of the chassis-side reverse pressure switch, the air output terminal of the tailstock-side reverse pressure switch, and the air output terminal of the support block lifting pressure switch; the air input terminal of the reverse pressure quick-exhaust solenoid directional valve is connected to the air output terminal of the chassis-side reverse pressure switch, the air output terminal of the tailstock-side reverse pressure switch, and the air output terminal of the support block lifting pressure switch; the air input terminal of the air storage filter unit pressure regulating valve is connected to the first air output terminal of the internal pressure quick-exhaust solenoid directional valve and the first air output terminal of the reverse pressure quick-exhaust solenoid directional valve; the 10th digital signal output terminal of the programming logic controller is connected to the switch signal input terminal of the internal pressure quick-exhaust solenoid directional valve and the switch signal input terminal of the reverse pressure quick-exhaust solenoid directional valve.

[0051] The air output terminals of the internal pressure quick-release solenoid directional valve and the reverse quick-release solenoid directional valve are connected to the booster exhaust air pipe. The quick exhaust valve is installed at the end of the booster exhaust air pipe. When the quick exhaust valve is an intelligent on / off valve, the control signal input terminal of the quick exhaust valve is connected to the control signal output terminal of the programmable logic controller. After the tire shape is basically formed, the internal pressure needs to be released to complete the shaping. During the release of internal pressure, the quick exhaust valve is automatically opened, and the air is discharged through the booster exhaust air pipe and the quick exhaust valve. This significantly shortens the exhaust time compared to internal exhaust, and improves the product CT cycle efficiency.

[0052] like Figure 4 The diagram shown is of an internal pressure protection relay, including:

[0053] The air input terminal of the internal pressure protection solenoid directional valve is connected to the air output terminal of the pressure regulating valve of the air storage filter unit. The air output terminal of the internal pressure protection solenoid directional valve is connected to the air input terminals of the reverse quick exhaust solenoid directional valve and the internal pressure quick exhaust solenoid directional valve. The signal terminal of the programmable logic controller is connected to the signal terminal of the internal pressure protection solenoid directional valve.

[0054] In tire forming drum equipment, the internal pressure protection relay is a key safety component of the air pressure control system. Its core function is to monitor the pressure status output by the air storage and filtration unit in real time, implement a rapid protective response to abnormal pressure, and ensure the safety of the equipment and tire blank.

[0055] like Figure 5 The diagram shown is of a support block unit, including:

[0056] The air input terminal of the support block lifting solenoid directional valve is connected to the air output terminal of the support block pressure regulating solenoid directional valve. The air input terminal of the support block pressure regulating solenoid directional valve is connected to the air output terminal of the internal pressure charging solenoid directional valve. The air input terminal of the support block lifting pressure switch is connected to the first air output terminal of the support block lifting solenoid directional valve. The air output terminal of the support block lifting pressure switch is connected to the air input terminals of the internal pressure quick discharge solenoid directional valve and the reverse wrap quick discharge solenoid directional valve. The second digital signal output terminal of the programming logic controller is connected to the lifting signal input terminal of the support block lifting solenoid directional valve. The third digital signal output terminal of the programming logic controller is connected to the regulating signal input terminal of the support block pressure regulating solenoid directional valve. The fourth digital signal output terminal of the programming logic controller is connected to the switch signal input terminal of the support block lifting pressure switch.

[0057] The support block is connected to the second air output terminal of the support block lifting solenoid valve. The specific pressure value of the support block is adjusted to the manufacturing process value by the support block pressure regulating solenoid valve. The programmable logic controller sends a signal to control the first air output terminal of the support block lifting solenoid valve to close and the second air output terminal of the support block lifting solenoid valve to open, so as to lift the support block. The lifting of the support block firmly locks the tire bead in the set position to prevent tire bead displacement during the process, which may cause deformation of the bead or air bubbles. After the tire bead is formed, the first air output terminal of the support block lifting solenoid valve opens, the support block lifting pressure switch opens, and the gas is discharged.

[0058] like Figure 6 The diagram shows the chassis-side reverse packaging unit and the tailstock-side reverse packaging unit, including:

[0059] The air inlet of the chassis-side reverse pressure valve is connected to the air outlet of the air storage and filter unit pressure regulating valve. The air outlet of the chassis-side reverse pressure valve is connected to the air inlet of the chassis-side pressure regulating solenoid valve. The air outlet of the chassis-side pressure regulating solenoid valve is connected to the air inlet of the chassis-side lifting solenoid valve. The air outlet of the chassis-side lifting solenoid valve is connected to the air inlet of the chassis-side reverse pressure switch and the air inlet of the chassis-side vacuum check solenoid valve. The air outlet of the chassis-side vacuum check solenoid valve is connected to the vacuum pumping equipment. The first air outlet of the chassis-side reverse pressure switch is connected to the air inlet of the internal pressure quick-exhaust solenoid valve and the air inlet of the reverse pressure quick-exhaust solenoid valve. During the process, the programmable logic controller (PLC) sends pulse width modulation waveform signals to control the chassis-side lifting solenoid valve and the chassis-side pressure regulating solenoid valve. The fifth digital signal output of the PLC is connected to the lifting signal input of the chassis-side lifting solenoid valve, the sixth digital signal output of the PLC is connected to the regulating signal input of the chassis-side pressure regulating solenoid valve, the seventh digital signal output of the PLC is connected to the switch signal input of the chassis-side vacuum check solenoid valve, the eighth digital signal output of the PLC is connected to the switch signal input of the chassis-side reverse pressure switch, and the ninth digital signal output of the PLC is connected to the switch signal input of the chassis-side reverse pressure valve.

[0060] The air inlet of the tailstock-side reverse pressure valve is connected to the air outlet of the air storage and filter unit pressure regulating valve; the air outlet of the tailstock-side reverse pressure valve is connected to the air inlet of the tailstock-side pressure regulating solenoid valve; the air outlet of the tailstock-side pressure regulating solenoid valve is connected to the air inlet of the tailstock-side lifting solenoid valve; the air outlet of the tailstock-side lifting solenoid valve is connected to the air inlet of the tailstock-side reverse pressure switch and the air inlet of the chassis-side vacuum check solenoid valve; the first air outlet of the tailstock-side reverse pressure switch is connected to the inner... The air input terminal of the quick-release solenoid directional valve is connected to the air input terminal of the reverse quick-release solenoid directional valve. The fifth digital signal output terminal of the programmable logic controller (PLC) is connected to the lifting signal input terminal of the tailstock side lifting solenoid directional valve. The sixth digital signal output terminal of the PLC is connected to the regulating signal input terminal of the tailstock side pressure regulating solenoid directional valve. The eighth digital signal output terminal of the PLC is connected to the switch signal input terminal of the tailstock side reverse pressure switch. The ninth digital signal output terminal of the PLC is connected to the switch signal input terminal of the tailstock side reverse pressure valve.

[0061] The molding drum housing-side reverse-packing unit and the tailstock-side reverse-packing unit are symmetrically arranged. Each of the housing-side and tailstock-side reverse-packing units has a set of reverse-packing capsules connected to its second air output terminal. The reverse-packing capsules are inflated outwards through their internal cavity. The housing-side and tailstock-side pressure regulating solenoid valves adjust the pressure according to process requirements. The programmable logic controller sends a signal, simultaneously closing the first air output terminals of both the housing-side and tailstock-side lifting solenoid valves to control the simultaneous raising of the reverse-packing capsules. After the reverse wrapping is completed, the first air output terminals of the tailstock side lifting solenoid valve and the chassis side lifting solenoid valve open simultaneously to release the gas. The chassis side reverse wrapping pressure switch and the tailstock side reverse wrapping pressure switch each have a set of air pressure gauges to detect the air pressure inside the reverse wrapping capsule. When the air pressure inside the reverse wrapping capsule is too high, the air inside the capsule is discharged by rolling to avoid air bubbles remaining between the sidewall rubber and the cord fabric. During the reverse wrapping process, the pressure roller can ensure that the sidewall rubber material is evenly wrapped around the bead wire, enhancing the structural integrity.

[0062] like Figure 7 The diagram shown is of an air storage and filtration unit, including:

[0063] The air outlet of the air tank is connected to the air inlet of the pneumatic triplet. The air outlet of the pneumatic triplet is connected to the air inlet of the pressure regulating valve of the air storage and filter unit. The air outlet of the pressure regulating valve of the air storage and filter unit is connected to the air inlet of the chassis-side reverse pressure valve, the air inlet of the tailstock-side reverse pressure valve, and the air inlet of the internal pressure inflation check valve. The first digital signal output of the programmable logic controller is connected to the regulation signal input of the pressure regulating valve of the air storage and filter unit.

[0064] When the forming drum is in operation, the pressure regulating valve of the air storage filter unit opens to regulate the output pressure, the gas rapid filling system provides stable gas pressure, the servo motor drives each half of the component to rotate at high speed for reverse wrapping and rolling forming, and the filter valve is located at the rear end of the pneumatic triplet to control the switch and switch the air path.

[0065] like Figure 8 The diagram shown is of an internal pressure inflation unit, including:

[0066] The air input terminal of the internal pressure inflation check valve is connected to the air output terminal of the pressure regulating valve of the air storage and filter unit; the air input terminal of the internal pressure inflation solenoid directional valve is connected to the air output terminal of the internal pressure inflation check valve; the air output terminal of the internal pressure inflation solenoid directional valve is connected to the air input terminal of the support block pressure regulating solenoid directional valve; and the 11th digital signal output terminal of the programming logic controller is connected to the regulating signal input terminal of the internal pressure inflation solenoid directional valve.

[0067] The internal pressure inflation unit continuously injects compressed air into the support block unit, forming a uniform air pressure field inside the drum body. This ensures stable pressure in the support block unit, ensures that materials such as the cord fabric and tread fit tightly against the drum surface, and eliminates air bubbles and creases.

[0068] like Figure 9 The diagram shown is of a booster cylinder, including:

[0069] The air input end of the booster cylinder input pipeline is connected to the air output end of the pressure regulating valve of the air storage and filter unit; the air output end of the booster cylinder input pipeline is connected to the air inlet compression port of the booster cylinder body and the air input end of the booster cylinder one-way solenoid valve; the air input end of the booster cylinder output pipeline is connected to the air outlet booster port of the booster cylinder body and the air output end of the booster cylinder one-way solenoid valve; the air output end of the booster cylinder output pipeline is connected to the air input end of the support block pressure regulating solenoid reversing valve; the 12th digital signal output end of the programming logic controller is connected to the switch signal input end of the booster cylinder one-way solenoid valve.

[0070] The booster cylinder is driven by compressed air, and the output air pressure is increased by tens of times through the ratio of the cross-sectional area of ​​the large and small pistons, generating a compaction force of 0.5Mpa to 1.0Mpa, which is used for rolling and bonding of rubber parts such as tire sidewalls and belt layers, eliminating air bubbles and ensuring the compaction strength of the support blocks.

[0071] The electromagnetic directional valve described above can be a three-position four-way electromagnetic directional valve. During the manufacturing process of the forming drum, the forming drum needs to maintain stable pressure in stages such as inflation, bonding, and shaping. The three-position four-way valve can switch to the middle position to maintain constant system pressure. The electromagnet in the electromagnetic directional valve can directly receive electrical signals and directly link with the programmable logic controller for control. Through proportional electromagnet technology, continuous pressure adjustment can be achieved to meet the fine control of pressure gradient in complex forming processes.

[0072] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A rapid exhaust system for a heavy-duty tire forming machine, characterized in that, It includes an internal pressure quick discharge unit, which includes an internal pressure quick discharge solenoid directional valve and a reverse wrap quick discharge solenoid directional valve; Among them, the air output end of the internal pressure quick exhaust solenoid directional valve and the air output end of the reverse wrap quick exhaust solenoid directional valve are respectively connected to the booster exhaust air pipe and then connected to the quick exhaust valve. When rapid discharge is required, the rapid discharge valve opens.

2. The rapid exhaust system for a heavy-duty tire forming machine according to claim 1, characterized in that, Also includes: Air storage and filtration unit, support block unit, chassis side reverse wrapping unit, tail frame side reverse wrapping unit, and internal pressure inflation unit; The air output of the air storage filter unit is connected to the air input of the chassis-side reverse packaging unit, the air input of the tailstock-side reverse packaging unit, and the air input of the internal pressure inflation unit. The air output end of the internal pressure inflation unit is connected to the air input end of the support block unit; The air input terminal of the internal pressure quick exhaust unit is connected to the air output terminal of the chassis-side reverse wrapping unit, the air output terminal of the tailstock-side reverse wrapping unit, and the air output terminal of the support block unit; The air output of the internal pressure quick exhaust unit is connected to the air input of the air storage filter unit.

3. The rapid exhaust system for a heavy-duty tire forming machine according to claim 2, characterized in that, The air storage and filtration unit includes: an air tank, a pneumatic triplet, and an air storage and filtration unit pressure regulating valve. The air output end of the air tank is connected to the air input end of the pneumatic triplet, and the air output end of the pneumatic triplet is connected to the air input end of the air storage and filtration unit pressure regulating valve. The air output end of the air storage and filtration unit pressure regulating valve is connected to the air input ends of the chassis-side reverse pressure valve, the tailstock-side reverse pressure valve, and the internal pressure inflation check valve. The first digital signal output of the programmable logic controller is connected to the adjustment signal input end of the air storage and filtration unit pressure regulating valve.

4. The rapid exhaust system for a heavy-duty tire forming machine according to claim 2, characterized in that, The support block unit includes: a support block raising and lowering solenoid valve, a support block pressure regulating solenoid valve, and a support block raising pressure switch. The air input terminal of the support block raising and lowering solenoid valve is connected to the air output terminal of the support block pressure regulating solenoid valve; the air input terminal of the support block pressure regulating solenoid valve is connected to the air output terminal of the internal pressure charging solenoid valve; the air input terminal of the support block raising pressure switch is connected to the air output terminal of the support block raising and lowering solenoid valve; the air output terminal of the support block raising pressure switch is connected to the air input terminals of the internal pressure quick-release solenoid valve and the reverse quick-release solenoid valve; the second digital signal output terminal of the programmable logic controller (PLC) is connected to the raising and lowering signal input terminal of the support block raising and lowering solenoid valve; the third digital signal output terminal of the PLC is connected to the regulating signal input terminal of the support block pressure regulating solenoid valve; and the fourth digital signal output terminal of the PLC is connected to the switching signal input terminal of the support block raising pressure switch.

5. The rapid exhaust system for a heavy-duty tire forming machine according to claim 2, characterized in that, The chassis-side reverse-packing unit includes: a chassis-side lifting solenoid valve, a chassis-side pressure regulating solenoid valve, a chassis-side vacuum one-way solenoid valve, a chassis-side reverse-packing pressure switch, and a chassis-side reverse-packing pressure valve. The air inlet of the chassis-side reverse-packing pressure valve is connected to the air outlet of the air storage and filtration unit pressure regulating valve; the air outlet of the chassis-side reverse-packing pressure valve is connected to the air inlet of the chassis-side pressure regulating solenoid valve; the air outlet of the chassis-side pressure regulating solenoid valve is connected to the air inlet of the chassis-side lifting solenoid valve; the air outlet of the chassis-side lifting solenoid valve is connected to the air inlet of the chassis-side reverse-packing pressure switch and the air inlet of the chassis-side vacuum one-way solenoid valve; the air outlet of the chassis-side vacuum one-way solenoid valve is connected to a vacuum pump; and the air outlet of the chassis-side reverse-packing pressure switch... The air input terminals of the internal pressure quick-release solenoid directional valve and the reverse-flow quick-release solenoid directional valve are connected. During the process, the programmable logic controller (PLC) sends pulse width modulation waveform signals to control the chassis-side lifting solenoid directional valve and the chassis-side pressure regulating solenoid directional valve. The fifth digital signal output terminal of the PLC is connected to the lifting signal input terminal of the chassis-side lifting solenoid directional valve. The sixth digital signal output terminal of the PLC is connected to the regulating signal input terminal of the chassis-side pressure regulating solenoid directional valve. The seventh digital signal output terminal of the PLC is connected to the switch signal input terminal of the chassis-side vacuum check solenoid valve. The eighth digital signal output terminal of the PLC is connected to the switch signal input terminal of the chassis-side reverse-flow pressure switch. The ninth digital signal output terminal of the PLC is connected to the switch signal input terminal of the chassis-side reverse-flow pressure valve.

6. The rapid exhaust system for a heavy-duty tire forming machine according to claim 2, characterized in that, The tailstock-side reverse-packing unit includes: a tailstock-side lifting solenoid valve, a tailstock-side pressure regulating solenoid valve, a tailstock-side reverse-packing pressure switch, and a tailstock-side reverse-packing pressure valve. The air inlet of the tailstock-side reverse-packing pressure valve is connected to the air outlet of the pressure regulating valve of the air storage and filtration unit; the air outlet of the tailstock-side reverse-packing pressure valve is connected to the air inlet of the tailstock-side pressure regulating solenoid valve; the air outlet of the tailstock-side pressure regulating solenoid valve is connected to the air inlet of the tailstock-side lifting solenoid valve; and the air outlet of the tailstock-side lifting solenoid valve is connected to the air inlet of the tailstock-side reverse-packing pressure switch and the chassis-side vacuum one-way valve. The air input terminal of the solenoid valve is connected, the air output terminal of the tailstock side reverse pressure switch is connected to the air input terminals of the internal pressure quick-release solenoid directional valve and the reverse pressure quick-release solenoid directional valve, the fifth digital signal output terminal of the programming logic controller is connected to the lifting signal input terminal of the tailstock side lifting solenoid directional valve, the sixth digital signal output terminal of the programming logic controller is connected to the regulating signal input terminal of the tailstock side pressure regulating solenoid directional valve, the eighth digital signal output terminal of the programming logic controller is connected to the switch signal input terminal of the tailstock side reverse pressure switch, and the ninth digital signal output terminal of the programming logic controller is connected to the switch signal input terminal of the tailstock side reverse pressure valve.

7. The rapid exhaust system for a heavy-duty tire forming machine according to claim 2, characterized in that, The air input terminal of the internal pressure quick-exhaust solenoid directional valve is connected to the air output terminal of the chassis-side reverse pressure switch, the air output terminal of the tailstock-side reverse pressure switch, and the air output terminal of the support block lifting pressure switch; the air input terminal of the reverse pressure quick-exhaust solenoid directional valve is connected to the air output terminal of the chassis-side reverse pressure switch, the air output terminal of the tailstock-side reverse pressure switch, and the air output terminal of the support block lifting pressure switch; the air input terminal of the air storage filter unit pressure regulating valve is connected to the air output terminal of the internal pressure quick-exhaust solenoid directional valve and the air output terminal of the reverse pressure quick-exhaust solenoid directional valve; the 10th digital signal output terminal of the programmable logic controller is connected to the switch signal input terminal of the internal pressure quick-exhaust solenoid directional valve and the switch signal input terminal of the reverse pressure quick-exhaust solenoid directional valve.

8. The rapid exhaust system for a heavy-duty tire forming machine according to claim 2, characterized in that, The internal pressure inflation unit includes an internal pressure inflation solenoid directional valve and an internal pressure inflation check valve. The air input terminal of the internal pressure inflation check valve is connected to the air output terminal of the pressure regulating valve of the air storage and filtration unit. The air input terminal of the internal pressure inflation solenoid directional valve is connected to the air output terminal of the internal pressure inflation check valve. The air output terminal of the internal pressure inflation solenoid directional valve is connected to the air input terminal of the support block pressure regulating solenoid directional valve. The 11th digital signal output terminal of the programmable logic controller is connected to the regulation signal input terminal of the internal pressure inflation solenoid directional valve.

9. The rapid exhaust system for a heavy-duty tire forming machine according to claim 2, characterized in that, The booster cylinder unit also includes: a booster cylinder body, a booster cylinder input pipeline, a booster cylinder output pipeline, and a booster cylinder one-way solenoid valve. The air input end of the booster cylinder input pipeline is connected to the air output end of the pressure regulating valve of the air storage and filtration unit; the air output end of the booster cylinder input pipeline is connected to the air inlet / compression port of the booster cylinder body and the air input end of the booster cylinder one-way solenoid valve. The air input end of the booster cylinder output pipeline is connected to the air outlet / boost port of the booster cylinder body and the air output end of the booster cylinder one-way solenoid valve; the air output end of the booster cylinder output pipeline is connected to the air input end of the support block pressure regulating solenoid directional valve. The 12th digital signal output terminal of the programmable logic controller is connected to the switch signal input terminal of the booster cylinder one-way solenoid valve.

10. The rapid exhaust system for a heavy-duty tire forming machine according to claim 2, characterized in that, The internal pressure protection relay also includes: an internal pressure protection solenoid directional valve, wherein the air input terminal of the internal pressure protection solenoid directional valve is connected to the air output terminal of the air storage filter unit pressure regulating valve, the air output terminal of the internal pressure protection solenoid directional valve is connected to the air input terminal of the reverse quick exhaust solenoid directional valve and the air input terminal of the internal pressure quick exhaust solenoid directional valve, and the 13th digital signal output terminal of the programming logic controller is connected to the switch signal input terminal of the internal pressure protection solenoid directional valve; The spindle brake also includes: a spindle brake pressure switch, a spindle brake pressure regulating valve, and a spindle brake pressure. The switch signal output terminal of the spindle pressure switch is connected to the servo motor drive signal input terminal, the switch signal input terminal of the spindle pressure switch is connected to the regulating signal output terminal of the spindle brake pressure regulating valve, and the regulating signal input terminal of the spindle brake pressure regulating valve is connected to the switch signal output terminal of the spindle brake pressure.

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