Large-specification engineering tire molding blank storage supporting device and method

Abstract

The invention discloses a large-specification engineering tire molding green tire storage supporting device and method, and relates to the technical field of tires. According to the technical scheme, the device comprises a center connecting disc, a circular-ring-shaped main capsule, an inflation mechanism and a plurality of buffering capsules, the buffering capsules are arranged on the inner ring side wall of the main capsule in the circumferential direction, and the main capsule is communicated with each buffering capsule; a plurality of supporting rods distributed in the circumferential direction are hinged to the center connecting disc, and the ends of the supporting rods are hinged to the buffering capsules. And the inflation mechanism is connected with an inflation inlet of the buffer capsule. The large-specification engineering tire forming tire blank can be uniformly supported so as to avoid local extrusion and tire side deformation, the tire blank defect rate is reduced, the tire finished product quality and the use performance are improved, and the equipment maintenance cost is reduced.

Description

Technical Field

[0001] This invention relates to the field of tire technology, specifically to a storage and support device and method for large-size engineering tire blanks. Background Technology

[0002] Large-format engineering tire blanks, due to their large size and weight, are prone to collapse and deformation over time during storage, a key bottleneck restricting the quality of engineering tire production. Currently, the mainstream storage methods for tire blanks in the industry are pallet storage and tire support frame storage; however, both methods have significant technical shortcomings and are insufficient to meet the production requirements of high-quality engineering tires. The shortcomings of the pallet storage method are: 1) The pallet can only support the bead area of ​​the tire blank. The lower sidewall area will be overstretched due to the lack of effective support, resulting in uneven distribution of rubber material in this area, which directly affects the structural stability of the finished tire; 2) The sidewall is a high-risk area for engineering tire failures. The pallet cannot provide effective support for the sidewall. During storage, the sidewall is prone to sagging and folding, causing the tire cords to bend and the rubber material to flow abnormally, which ultimately leads to quality problems such as sidewall bulges and cracks in the finished tire.

[0003] The shortcomings of the tire support frame storage method are: 1) The support frame is mostly a mechanical structure made in the factory. It needs to be designed separately according to different specifications of tire blanks and tire blank cars. It has poor versatility and increases the factory's equipment investment and management costs; 2) The support frame adopts a fixed point or fixed area hard support method. When it comes into contact with the inside of the tire blank, it is easy to cause local compression, resulting in uneven thickness of the tire inner rubber. This leads to a decrease in the dynamic balance performance of the finished tire, and even serious defects such as insufficient rubber in the tire inner rubber and exposed cords.

[0004] Therefore, the technical shortcomings of the existing storage methods not only reduce the production qualification rate of engineering tires, but also affect the load-bearing capacity and durability of tires in actual use, making them unsuitable for the manufacturing needs of high-end engineering tires. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a storage support device and method for large-size engineering tire blanks. This solves the problems caused by the collapse of large-size engineering tire blanks, such as missing rubber on the tire sidewall, exposed wires inside the tire, and X-ray reverse bending. Compared with traditional support methods, it has a more stable support effect, a more convenient operation method, and is highly replicable even in different factories.

[0006] Through the inflatable flexible support structure and adaptive design, large-size engineering tire blanks can be uniformly supported to avoid local compression and sidewall deformation, thereby improving the universality and ease of operation of the device, reducing the defect rate of the blanks, improving the quality and performance of finished tires, and reducing equipment maintenance costs.

[0007] The technical solution of this invention is as follows: On one hand, the present invention provides a storage and support device for large-size engineering tire blanks, including a central connecting plate, a circular main capsule, an inflation mechanism, and several buffer capsules. The several buffer capsules are circumferentially arranged on the inner ring sidewall of the main capsule, and the main capsule is connected to each buffer capsule respectively. Several circumferentially distributed support rods are hinged on the central connecting plate, and the ends of the support rods are hinged to the buffer capsules. The inflation mechanism is connected to the inflation port of the buffer capsules.

[0008] Preferably, three buffer capsules are provided.

[0009] Preferably, the inflation mechanism includes a four-way adapter disposed on one of the buffer capsules, the air inlet of the four-way adapter is connected to a valve, the three air outlets of the four-way adapter are respectively connected to the three buffer capsules, and a manual air valve is installed on the valve.

[0010] Preferably, there is a gap between adjacent buffer capsules, and a pressure monitoring mechanism is provided on the inner ring sidewall of the main capsule at the gap. The pressure monitoring mechanism includes a valve two provided on the inner ring sidewall of the main capsule, a valve adapter two connected to the valve two, a pipe connector two connected to the valve adapter two, and an automatic pressure relief valve and a pressure sensor installed on the pipe connector two.

[0011] Preferably, the support rod includes a short rod and a long rod, the short rod is fixed on the central connecting plate, the short rod and the long rod are hinged by a fisheye bearing, and a sliding sleeve is fitted on the support rod.

[0012] Preferably, a limiting plate one is provided at one end of the short rod fixed to the central connecting plate, and a limiting plate two is provided at one end of the long rod near the fisheye bearing, with the sliding sleeve located between the limiting plate one and the limiting plate two.

[0013] Preferably, the main capsule is provided with a butyl rubber layer, a nylon fiber braided layer, a nitrile rubber layer, and a polyurethane coating from the inside out.

[0014] Preferably, the inner wall of the main capsule is provided with a plurality of rubber cushioning pads in the circumferential direction.

[0015] On the other hand, the present invention provides a method for storing and supporting large-size engineering tire blanks, the operation of which is as follows: Place the aforementioned large-size engineering tire blank storage support device inside the finished tire blank; lay the buffer capsule and main capsule inside the tire blank, and rotate the support rod to support the device inside the tire blank; inflate the buffer capsule through the inflation mechanism, and finally complete the inflation of the main capsule; transfer the supported tire blank to the tire drying area for storage.

[0016] Compared with the prior art, the present invention has the following advantages: 1. This invention replaces the traditional hard-contact multi-point support frame with an inflatable flexible support structure of the main capsule and the buffer capsule. The support force can be evenly distributed on the inside of the tire carcass, eliminating problems such as insufficient rubber and uneven thickness caused by local compression, and ensuring the molding accuracy of the tire carcass.

[0017] 2. The inflation, depressurization and disassembly processes of the device of the present invention can be completed in the conventional production environment of a tire factory without the need for additional customized special equipment, which significantly improves the ease of operation and production efficiency.

[0018] 3. The inflatable support structure of the present invention can effectively support the tire embryo sidewall, avoiding cord bending and material flow problems caused by the tire sidewall sagging and folding due to its own weight, and significantly reducing the failure rate of the finished tire sidewall lacking rubber and exposed cords in the tire; at the same time, the morphological stability of the tire embryo during storage is improved, reducing the amount of reverse bending found in X-ray inspection, making the tire carcass structure more regular, and significantly improving the actual performance of the finished tire in terms of load-bearing capacity and impact resistance.

[0019] 4. In this invention, the main capsule adopts a composite structure of butyl rubber layer, nylon fiber braided layer and polyurethane coating, which not only improves the tensile strength and airtightness of the capsule, but also prevents friction and adhesion between the capsule and the embryo through polyurethane coating, thus extending the service life of the device and reducing the maintenance costs and production interruption risks caused by frequent capsule replacement.

[0020] 5. The device of the present invention is equipped with a pressure monitoring mechanism consisting of a pressure sensor and an automatic pressure relief valve, which can monitor and precisely regulate the air pressure inside the capsule in real time, avoiding capsule damage or excessive expansion and deformation of the embryo due to excessive air pressure, while preventing support failure caused by insufficient air pressure, thus improving the safety and stability of the storage process. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the large-size engineering tire preform storage and support device of the present invention.

[0022] Figure 2 yes Figure 1 A magnified view of a portion at point A.

[0023] Figure 3 yes Figure 1 A magnified view of a section at point B.

[0024] Figure 4 yes Figure 1 A magnified view of a section at point C.

[0025] Figure 5 yes Figure 1 A magnified view of a portion at point D.

[0026] Figure 6 This is a schematic diagram of the structure of the support rod in this invention when the long rod is in a vertical state.

[0027] Figure 7 This is a schematic diagram of the structure when the long rod of the support rod in this invention is in a horizontal state.

[0028] Figure 8 This is a schematic diagram of the structure in this invention that uses a sliding sleeve to fix the support rod.

[0029] Figure 9 This is a schematic diagram of the structure of the rubber buffer pad on the inner wall of the main capsule in this invention.

[0030] In the diagram: 1. Central connecting plate; 2. Main capsule; 201. Butyl rubber layer one; 202. Nylon fiber braided layer; 203. Nitrile rubber layer two; 204. Polyurethane coating; 3. Inflation mechanism; 301. Four-way adapter; 302. Valve one; 303. Valve adapter one; 304. Pipe joint one; 305. Manual air valve; 306. Inflation pipeline; 401. Support rod; 4011. Short rod; 4012. Long rod; 402. Fisheye bearing; 403. Sliding sleeve; 404. Limiting plate one; 405. Limiting plate two; 5. Buffer capsule; 6. Connecting port; 7. Pressure monitoring mechanism; 701. Valve two; 702. Valve adapter two; 703. Pipe joint two; 704. Automatic pressure relief valve; 705. Pressure sensor; 8. Rubber buffer pad; 9. Ball end bearing. Detailed Implementation

[0031] To enable those skilled in the art to better understand the technical solutions of this invention, the technical solutions of this invention will be clearly and completely described below in conjunction with the embodiments of this invention.

[0032] Example 1 like Figure 1 As shown, this embodiment provides a storage and support device for large-size engineering tire blanks, including a central connecting plate 1, a circular main capsule 2, an inflation mechanism 3, and three buffer capsules 5. The three buffer capsules 5 are disposed inside the main capsule 2 and are circumferentially disposed on the inner ring sidewall of the main capsule 2; the main capsule 2 and each buffer capsule 5 are connected through a communication port 6.

[0033] like Figure 1 As shown, four circumferentially spaced support rods 401 are hinged to the central connecting plate 1. The ends of the support rods 401 are hinged to the inner side of the buffer capsule 5 via ball bearings 9. Specifically, in this embodiment, as... Figure 2As shown, the support rod 401 includes a short rod 4011 and a long rod 4012. The short rod 4011 is fixed to the central connecting plate 1, and a limiting plate 404 is provided at one end of the short rod 4011 fixed to the central connecting plate 1. The short rod 4011 and the long rod 4012 are hinged through a fisheye bearing 402. A second limiting plate 405 is provided at one end of the long rod 4012 near the fisheye bearing 402. A sliding sleeve 403 is sleeved between the first limiting plate 404 and the second limiting plate 405. Figure 6 As shown, the long rod 4012 of the support rod 401 is in a vertical position when not in use, keeping the entire device in a retracted state; when it is necessary to use the device to support the capsule inside the fetal carcass, the long rod 4012 of the support rod 401 can be rotated under the action of the fisheye bearing 402, so that the support rod 401 rotates 90° to a horizontal position (as shown). Figure 7 As shown), slide the sleeve 403 until it covers the fisheye bearing 402, thus completing the unfolding and fixing of the support rod 401 (as shown). Figure 8 As shown in the figure, this facilitates the subsequent storage and support of the embryo in the device.

[0034] like Figure 3 As shown, the inflation mechanism 3 includes a four-way adapter 301 fixed on one of the buffer capsules 5. The air inlet of the four-way adapter 301 is connected to a valve 302, and the three air outlets of the four-way adapter 301 are respectively connected to the inflation ports of the three buffer capsules 5 through inflation pipes 306. A manual air valve 305 and a valve adapter 303 are installed on the valve 302, and the valve adapter 303 is connected to a pipe connector 304. When inflating the device, an air duct can be connected to the pipe connector 304, and the buffer capsule 5 is inflated through the air duct. The buffer capsule 5 is inflated first to improve rigidity and facilitate fixed position, and finally the main capsule 2 is evenly inflated through the connecting port 6 to avoid uneven tire support caused by sudden local pressure increases.

[0035] Furthermore, in this embodiment, as Figure 1 , 4As shown, there is a gap between adjacent buffer capsules 5. A pressure monitoring mechanism 7 is installed on the inner ring sidewall of the main capsule 2 at this gap. The pressure monitoring mechanism 7 includes a valve 701 installed on the inner ring sidewall of the main capsule 2. A valve adapter 702 is connected to the valve 701. The valve adapter 702 is connected to a pipe connector 703. An automatic pressure relief valve 704 and a pressure sensor 705 are installed on the pipe connector 703. The pressure sensor 705 can detect the inflation pressure in the main capsule 2 in real time. A pressure upper limit value can be preset in the controller. When the pressure sensor 705 detects that the inflation pressure in the main capsule 2 reaches the pressure upper limit value, it controls the automatic pressure relief valve 704 to open until the pressure sensor 705 detects that the pressure in the main capsule 2 has dropped below the pressure upper limit value. This improves the safety factor of the main capsule 2 and avoids the reduction of the life of the main capsule 2 due to excessive pressure.

[0036] The method for storing and supporting large-size engineering tire blanks in this embodiment is as follows: (1) Place the above-mentioned large-size engineering tire blank storage support device inside the finished tire blank; (2) Lay the main capsule 2 inside the embryo, rotate and fix the support rod 401 so that the device is supported inside the embryo; (3) Connect the air duct of the factory molding machine to the pipe joint 304 of the inflation mechanism 3, open the manual air valve 305, and under the monitoring of the pressure sensor 705, inflate the main capsule 2 to 350-400 kPa. (4) After confirming the inflation pressure, close the manual air valve 305, disconnect the air pipe of the factory molding machine, and transfer the supported tire blank to the drying area for storage.

[0037] Before loading the tire carcass into the vulcanizing pot, the tire carcass storage support device needs to be removed. The operation is as follows: open the manual air valve 305 at the vulcanizing machine, connect the vacuum air pipe to the pipe joint 304, and evacuate until the main capsule 2 is flat; disconnect the vacuum air pipe, retract the support rod 401 upwards, remove the device, and then load the tire carcass into the vulcanizing pot.

[0038] Example 2 Based on Example 1, such as Figure 5 As shown, the main capsule 2 is composed of, from the inside out, a butyl rubber layer 201, a nylon fiber braided layer 202, a nitrile rubber layer 203, and a polyurethane coating 204. The outer layer uses a polyurethane coating 204 to prevent the main capsule 2 from rubbing and sticking to the tire blank; the inner layer uses butyl rubber, commonly used in tire molding processes, and a nylon fiber braided mesh is added between the two butyl rubber layers to improve the tensile strength of the main capsule 2 after inflation. Meanwhile, as... Figure 9As shown, the inner wall of the main capsule 2 has eight fluororubber (FKM) cushioning pads 8 arranged circumferentially on one side and an estimated 16 on both sides. The side wall of the main capsule is the main load-bearing and contact position with the fetal carcass. Since the temperature of the fetal carcass winding will be conducted to the inside of the fetal carcass, and there are also temperature requirements for storage, high temperature and aging resistant fluororubber is used to increase the thickness of the side wall of the main capsule, so that the side wall stretches more gently and extends the service life.

Claims

1. A storage and support device for large-size engineering tire blanks, characterized in that, It includes a central connecting plate (1), a circular main capsule (2), an inflation mechanism (3), and several buffer capsules (5). The several buffer capsules (5) are circumferentially arranged on the inner ring sidewall of the main capsule (2), and the main capsule (2) is connected to each buffer capsule (5). Several circumferentially distributed support rods (401) are hinged on the central connecting plate (1), and the ends of the support rods (401) are hinged to the buffer capsules (5). The inflation mechanism (3) is connected to the inflation port of the buffer capsules (5).

2. The large-size engineering tire blank storage and support device as described in claim 1, characterized in that, The buffer capsule (5) is provided in three parts.

3. The large-size engineering tire blank storage and support device as described in claim 2, characterized in that, The inflation mechanism (3) includes a four-way adapter (301) installed on one of the buffer capsules (5). The air inlet of the four-way adapter (301) is connected to a valve (302). The three air outlets of the four-way adapter (301) are respectively connected to the three buffer capsules (5). A manual air valve (305) is installed on the valve (302).

4. The large-size engineering tire blank storage and support device as described in claim 1, characterized in that, There is a gap between adjacent buffer capsules (5). A pressure monitoring mechanism (7) is provided on the inner ring sidewall of the main capsule (2) at the gap. The pressure monitoring mechanism (7) includes a valve two (701) provided on the inner ring sidewall of the main capsule (2). A valve adapter two (702) is connected to the valve two (701). A pipe connector two (703) is connected to the valve adapter two (702). An automatic pressure relief valve (704) and a pressure sensor (705) are installed on the pipe connector two (703).

5. The large-size engineering tire blank storage and support device as described in claim 1, characterized in that, The support rod (401) includes a short rod (4011) and a long rod (4012). The short rod (4011) is fixed on the central connecting plate (1). The short rod (4011) and the long rod (4012) are hinged through a fisheye bearing (402), and a sliding sleeve (403) is sleeved on the support rod (401).

6. The storage and support device for large-size engineering tire blanks as described in claim 5, characterized in that, The short rod (4011) is fixed to one end of the central connecting plate (1) and a limiting plate one (404) is provided. The long rod (4012) is provided with a limiting plate two (405) at one end near the fisheye bearing (402). The sliding sleeve (403) is located between the limiting plate one (404) and the limiting plate two (405).

7. The large-size engineering tire blank storage and support device as described in claim 1, characterized in that, The main capsule (2) is provided with a butyl rubber layer (201), a nylon fiber braided layer (202), a nitrile rubber layer (203), and a polyurethane coating (204) from the inside to the outside.

8. The large-size engineering tire blank storage and support device as described in claim 1, characterized in that, The inner wall of the main capsule (2) is provided with several rubber cushioning pads (8) in the circumferential direction.

9. A method for storing and supporting large-size engineering tire blanks, characterized in that, The operation is as follows: Place the large-size engineering tire blank storage support device as described in any one of claims 1-8 inside the finished tire blank; lay the buffer capsule (5) and the main capsule (2) inside the tire blank, rotate the support rod (401) to support the device inside the tire blank; inflate the buffer capsule (5) through the inflation mechanism (3) and finally complete the inflation of the main capsule (2); transfer the supported tire blank to the tire drying area for storage.

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