Center grading pneumatic cylinder structure for capsule vulcanizing machine

Abstract

The utility model discloses a center grading pneumatic cylinder structure for a capsule vulcanizing machine, and relates to the technical field of capsule vulcanizing machines. The air cylinder comprises an air cylinder shell, a first inflation pipe is fixedly inserted into the surface of the air cylinder shell, a second-stage air cylinder piston rod is movably inserted into the inner wall of the air cylinder shell, a first sealing rubber ring is movably connected to the surface of the second-stage air cylinder piston rod in a sleeved mode, and a third-stage air cylinder piston rod is movably inserted into the inner wall of the second-stage air cylinder piston rod. According to the multi-stage telescopic pneumatic cylinder, the interior of the cylinder shell is inflated through the first inflation pipe, gas enters the interior of the second-stage cylinder piston rod through the bottom gas inlet pipe opening, and the pneumatic cylinder is of a multi-stage telescopic structure through telescopic movement of the second-stage cylinder piston rod and the third-stage cylinder piston rod; the height of the central base for mounting the pneumatic cylinder on the die holder is reduced, so that the overall height of the capsule vulcanizing machine is reduced.

Description

Technical Field

[0001] This utility model relates to the field of capsule vulcanizing machine technology, specifically to a central grading pneumatic cylinder structure for a capsule vulcanizing machine. Background Technology

[0002] Tire vulcanization refers to the vulcanization of the outer tire, which is carried out using a mold pressurization method. A key feature is that the outer diameter of the tire blank is smaller than the inner diameter of the mold. During vulcanization, the tire blank is filled with a water-filled tubing or bladder, and high-pressure hot water is injected into the water-filled tubing. The expansion pressure of the water-filled tubing or bladder fills the mold with the outer tire. Chinese Patent Publication No. CN207841861U discloses a novel vulcanizing machine for rubber tire production, including a housing, a bladder, a mold cover, a rotator, and a mold block. The rotator is located at the lower part of the housing, and a movable connector is located on the upper part of the rotator. An input pipe is located on the movable connector, and a hydraulic cylinder is located on the movable connector.

[0003] Regarding this disclosed technology, most commercially available capsule vulcanizing machines currently use a two-stage cylinder for the central pressure cylinder. With a two-stage cylinder, each stage is relatively long. Because the first-stage cylinder is fixedly mounted in the center of the central base, the height of the central base is also relatively high. If the central base for each stage is also relatively high, the overall height of the multi-stage vulcanizing machine is relatively high, which places higher demands on the height of the factory building. Reducing the height of the central base also reduces the overall height of the multi-stage vulcanizing machine.

[0004] Therefore, a central staged pneumatic cylinder structure for a capsule vulcanizing machine is proposed. Utility Model Content

[0005] The purpose of this utility model is to solve the problem that most of the central air pressure cylinders of capsule vulcanizing machines on the market are two-stage cylinders. With two-stage cylinders, the length of each stage cylinder is relatively long. In order to reduce the height of the central base and also to reduce the overall height of the multi-stage vulcanizing machine, this utility model provides a central staged air pressure cylinder structure for capsule vulcanizing machines.

[0006] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0007] A central staged pneumatic cylinder structure for a capsule vulcanizing machine includes a cylinder shell, a first inflation tube fixedly inserted into the surface of the cylinder shell, opening components inside and on the surface of the cylinder shell, an inflation component on the surface of the cylinder shell, a vulcanizing capsule mounting component on the surface of the cylinder shell, a secondary cylinder piston rod movably inserted into the inner wall of the cylinder shell, an auxiliary component for cylinder extension and retraction on the surface of the secondary cylinder piston rod, a first sealing ring movably fitted onto the surface of the secondary cylinder piston rod, a tertiary cylinder piston rod movably inserted into the inner wall of the secondary cylinder piston rod, and a second sealing ring movably fitted onto the surface of the tertiary cylinder piston rod.

[0008] Furthermore, the opening assembly includes a venting groove, the cylinder housing has a venting groove inside, and the cylinder housing has an outlet hole through it.

[0009] Furthermore, the inflation assembly includes a secondary cylinder flange, which is fixedly installed on the top surface of the cylinder housing. A through hole is provided on the top surface of the secondary cylinder flange, and the opening position of the through hole is located directly above the air outlet. A second inflation pipe is fixedly inserted into the surface of the cylinder housing.

[0010] Furthermore, the vulcanizing capsule mounting assembly includes an external thread, the surface of the cylinder housing is provided with an external thread, the surface of the cylinder housing is threadedly connected to the vulcanizing capsule mounting block through the external thread, and the top surface of the vulcanizing capsule mounting block is provided with a through hole.

[0011] Furthermore, the auxiliary component includes a bottom air inlet, the bottom surface of the second-stage cylinder piston rod is provided with a bottom air inlet, and the top surface of the second-stage cylinder piston rod is fixedly installed with a third-stage cylinder flange.

[0012] Furthermore, there are multiple air outlets, and these multiple air outlets are distributed in a circular array on the top surface of the cylinder housing.

[0013] The beneficial effects of this utility model are as follows:

[0014] This invention uses a first inflation tube to inflate the inside of the cylinder housing. The air pressure allows the piston rod of the second-stage cylinder to move within the cylinder housing. A first sealing ring seals the gap between the piston rod and the cylinder housing. After the piston rod completes its extension and retraction within the cylinder housing, gas enters through the bottom inlet. The gas compression causes the piston rod of the third-stage cylinder to move within the second-stage cylinder, allowing for further extension and retraction. A second sealing ring seals the third-stage cylinder... The gap between the piston rod and the piston rod of the second-stage cylinder is sealed. The extension and retraction of the piston rods of the second-stage and third-stage cylinders makes the pneumatic cylinder a multi-stage telescopic structure. When the tire is being molded, gas is injected into the venting groove through the second inflation pipe. The gas inflates the vulcanizing bladder through the through hole and the through hole. Conversely, it can also be deflated. This multi-stage telescopic structure, using a multi-stage central cylinder, reduces the height of the central base on the mold base used to install the pneumatic cylinder, thereby reducing the overall height of the bladder vulcanizing machine. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0016] Figure 2 This is a partial cross-sectional view of the present invention;

[0017] Figure 3 This is an enlarged schematic diagram of the structure at point A of this utility model;

[0018] Figure 4 This is an enlarged schematic diagram of the structure at point B of this utility model;

[0019] Figure 5 This is a partial cross-sectional view and a schematic diagram of the internal structure of this utility model.

[0020] Reference numerals: 1. Cylinder housing; 2. First inflation pipe; 3. Opening assembly; 301. Vent groove; 302. Air outlet; 4. Inflation assembly; 401. Second stage cylinder flange; 402. Through hole; 403. Second inflation pipe; 5. Vulcanizing capsule mounting assembly; 501. External thread; 502. Vulcanizing capsule mounting block; 503. Through hole; 6. Second stage cylinder piston rod; 7. Auxiliary assembly; 701. Bottom air inlet; 702. Third stage cylinder flange; 8. First sealing ring; 9. Third stage cylinder piston rod; 10. Second sealing ring. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0023] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] like Figure 1-5As shown, a central staged pneumatic cylinder structure for a capsule vulcanizing machine includes a cylinder shell 1, a first inflation pipe 2 fixedly inserted into the surface of the cylinder shell 1, an opening assembly 3 formed inside and on the surface of the cylinder shell 1, an inflation assembly 4 provided on the surface of the cylinder shell 1, a vulcanizing capsule mounting assembly 5 provided on the surface of the cylinder shell 1, a secondary cylinder piston rod 6 movably inserted into the inner wall of the cylinder shell 1, and a limit ring movably sleeved on the surface of the secondary cylinder piston rod 6, and a feature for cylinder extension and retraction provided on the surface of the secondary cylinder piston rod 6. Auxiliary component 7: A first sealing ring 8 is movably sleeved on the surface of the secondary cylinder piston rod 6, and a tertiary cylinder is movably inserted into the inner wall of the secondary cylinder piston rod 6; specifically, this capsule vulcanizing machine uses a centrally graded pneumatic cylinder structure. The first inflation pipe 2 is connected to an external inflation device to inflate the inside of the cylinder housing 1. The air pressure causes the secondary cylinder piston rod 6 to extend and retract inside the cylinder housing 1. The first sealing ring 8 is used to seal the gap between the secondary cylinder piston rod 6 and the cylinder housing 1. The first sealing ring 8 is an O-ring seal. This is the most common type of sealing ring, with a circular cross-section. It has the advantages of simple structure, convenient installation, and good sealing performance. A limiting ring on the surface of the secondary cylinder piston rod 6 assists its movement. Through the auxiliary component 7, when the secondary cylinder piston rod 6 cannot extend or retract within the cylinder housing 1, air pressure enters the interior of the secondary cylinder piston rod 6 through the components of the auxiliary component 7. At this time, the air pressure compresses the tertiary cylinder piston rod 9, causing the tertiary cylinder piston rod 9 to extend and retract within the secondary cylinder piston rod 6. The second sealing ring 10 is also included. The gap between the piston rod 6 of the second-stage cylinder and the piston rod 9 of the third-stage cylinder is sealed. The vulcanizing bladder mounting assembly 5 is set up for the installation of vulcanizing bladders used in tire processing. At the same time, through the cooperation of the inflation assembly 4, it is connected to an external inflation device. Gas flows out through the structure of the inflation assembly 4 to inflate the vulcanizing bladder. Conversely, it can also deflate the bladder. This makes the pneumatic cylinder a multi-stage telescopic structure. The use of a multi-stage central cylinder reduces the height of the central base on the mold base used to install the pneumatic cylinder, thereby reducing the overall height of the bladder vulcanizing machine.

[0026] like Figure 3 , Figure 5 As shown, the opening assembly 3 includes a venting groove 301. The venting groove 301 is provided inside the cylinder housing 1, and an outlet hole 302 is provided through the surface of the cylinder housing 1. Specifically, the venting groove 301 allows gas to pass through the cylinder housing 1, thereby inflating and deflating the vulcanizing capsule. The outlet hole 302 allows gas to flow out from the cylinder housing 1. The outlet hole 302 can also be replaced by an annular groove, which allows gas to pass through more conveniently and is also more convenient to open.

[0027] like Figure 2 , Figure 3 As shown, the inflation assembly 4 includes a secondary cylinder flange 401. The secondary cylinder flange 401 is fixedly installed on the top surface of the cylinder housing 1. A through hole 402 is provided through the top surface of the secondary cylinder flange 401, and the opening position of the through hole 402 is located directly above the air outlet 302. A second inflation pipe 403 is fixedly inserted into the surface of the cylinder housing 1. Specifically, the inflation assembly 4 is configured such that when the tire is molded, the second inflation pipe 403 is connected to an external inflation device. Gas is filled into the interior of the ventilation groove 301 through the second inflation pipe 403. Then, the gas flows to the inflation assembly 4 through the ventilation groove 301 and the air outlet 302. The position of the air outlet 302 is directly opposite the position of the through hole 402. Gas inflates the vulcanizing bladder through the through hole 402 and the through hole 503. Conversely, it can also be used for deflating.

[0028] like Figure 1 , Figure 3 As shown, the vulcanizing capsule mounting assembly 5 includes an external thread 501. The surface of the cylinder housing 1 is provided with the external thread 501, and the surface of the cylinder housing 1 is threadedly connected to the vulcanizing capsule mounting block 502 via the external thread 501. The top surface of the vulcanizing capsule mounting block 502 is provided with a through hole 503. Specifically, the vulcanizing capsule mounting assembly 5 is configured such that the external thread 501 is used for mounting the vulcanizing capsule mounting block 502 on the surface of the cylinder housing 1, the vulcanizing capsule mounting block 502 is used for mounting the vulcanizing capsule, and the through hole 503 allows the gas discharged through the through hole 402 to pass through the vulcanizing capsule mounting block 502.

[0029] like Figure 2 , Figure 4 As shown, the auxiliary component 7 includes a bottom air inlet 701. The bottom surface of the secondary cylinder piston rod 6 is provided with the bottom air inlet 701, and the top surface of the secondary cylinder piston rod 6 is fixedly installed with a tertiary cylinder flange 702. Specifically, with the auxiliary component 7, gas enters the interior of the secondary cylinder piston rod 6 through the bottom air inlet 701. Through the compression of the gas, the tertiary cylinder piston rod 9 moves inside the secondary cylinder piston rod 6, and then performs further extension and retraction. The installation of the second sealing ring 10 on the surface of the tertiary cylinder piston rod 9 seals the gap between the tertiary cylinder piston rod 9 and the secondary cylinder piston rod 6. The setting of the tertiary cylinder flange 702 prevents the tertiary cylinder piston rod 9 from moving out of the secondary cylinder piston rod 6.

[0030] like Figure 3 As shown, there are multiple air outlets 302, and the multiple air outlets 302 are distributed in a circular array on the top surface of the cylinder housing 1; specifically, there are several air outlets 302 and through holes 402, so that the gas can flow out more fully, and thus better perform the filling and degassing treatment of the vulcanizing capsule.

[0031] In summary: This capsule vulcanizing machine uses a centrally graded pneumatic cylinder structure. The first inflation pipe 2 is used to connect to external inflation equipment to inflate the inside of the cylinder housing 1. The pneumatic pressure allows the piston rod 6 of the second-stage cylinder to extend and retract within the cylinder housing 1. The installation of the first sealing ring 8 on the surface of the second-stage cylinder piston rod 6 seals the gap between the piston rod 6 and the cylinder housing 1. The center of the second-stage cylinder piston rod 6 is hollow, and the bore diameter matches the bottom diameter of the third-stage cylinder piston rod 9. After the piston rod 6 of the second-stage cylinder completes its telescopic movement inside the cylinder housing 1, the installation of the second-stage cylinder flange 401 prevents the piston rod 6 from moving out of the cylinder housing 1. Through the auxiliary component 7, gas enters the interior of the second-stage cylinder piston rod 6 via the bottom air inlet 701. The gas compression causes the third-stage cylinder piston rod 9 to move inside the second-stage cylinder piston rod 6, thus performing further telescopic movement. The installation of the second sealing ring 10 on the surface of the third-stage cylinder piston rod 9 further enhances the performance of the third-stage cylinder piston rod. The gap between piston rod 9 and secondary cylinder piston rod 6 is sealed. The setting of the tertiary cylinder flange 702 prevents the tertiary cylinder piston rod 9 from moving out of the secondary cylinder piston rod 6. Through the telescopic movement of the secondary cylinder piston rod 6 and the tertiary cylinder piston rod 9, the pneumatic cylinder has a multi-stage telescopic structure. The vulcanizing bladder mounting assembly 5 is provided, with external thread 501 for mounting the vulcanizing bladder mounting block 502 on the surface of the cylinder housing 1. The vulcanizing bladder mounting block 502 is used for mounting the vulcanizing bladder. This is done at the tire molding point. During operation, the second inflation tube 403 is connected to an external inflation device. Gas is injected into the venting groove 301 through the second inflation tube 403. Subsequently, the gas flows to the inflation assembly 4 through the venting groove 301 and the vent hole 302. The vent hole 302 is positioned directly opposite the through hole 402. There are several vent holes 302 and through holes 402, allowing the gas to circulate more fully. The gas inflates the vulcanizing capsule through the through hole 402 and the through hole 503. Conversely, it can also be deflated.

[0032] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A central grading pneumatic cylinder structure for a capsule vulcanizing machine, characterized in that, The cylinder housing (1) includes a first inflation tube (2) fixedly inserted into the surface of the cylinder housing (1), an opening assembly (3) provided inside and on the surface of the cylinder housing (1), an inflation assembly (4) provided on the surface of the cylinder housing (1), a vulcanizing capsule installation assembly (5) provided on the surface of the cylinder housing (1), a secondary cylinder piston rod (6) movably inserted into the inner wall of the cylinder housing (1), an auxiliary assembly (7) for cylinder extension and retraction provided on the surface of the secondary cylinder piston rod (6), a first sealing ring (8) movably sleeved on the surface of the secondary cylinder piston rod (6), a tertiary cylinder piston rod (9) movably inserted into the inner wall of the secondary cylinder piston rod (6), and a second sealing ring (10) movably sleeved on the surface of the tertiary cylinder piston rod (9).

2. The structure of a central staged pneumatic cylinder for a capsule vulcanizing machine according to claim 1, characterized in that, The opening assembly (3) includes a venting groove (301), the cylinder housing (1) has a venting groove (301) inside, and the cylinder housing (1) has an exhaust hole (302) through it.

3. The structure of a central staged pneumatic cylinder for a capsule vulcanizing machine according to claim 2, characterized in that, The inflation assembly (4) includes a secondary cylinder flange (401). The secondary cylinder flange (401) is fixedly installed on the top surface of the cylinder housing (1). A through hole (402) is opened through the top surface of the secondary cylinder flange (401), and the opening position of the through hole (402) is located directly above the air outlet (302). A second inflation pipe (403) is fixedly inserted into the surface of the cylinder housing (1).

4. The structure of a central staged pneumatic cylinder for a capsule vulcanizing machine according to claim 1, characterized in that, The vulcanized capsule mounting assembly (5) includes an external thread (501). The surface of the cylinder housing (1) is provided with an external thread (501). The surface of the cylinder housing (1) is threadedly connected to a vulcanized capsule mounting block (502) through the external thread (501). A through hole (503) is provided on the top surface of the vulcanized capsule mounting block (502).

5. The structure of a central staged pneumatic cylinder for a capsule vulcanizing machine according to claim 1, characterized in that, The auxiliary component (7) includes a bottom air inlet (701), the bottom surface of the second-stage cylinder piston rod (6) is provided with a bottom air inlet (701), and the top surface of the second-stage cylinder piston rod (6) is fixedly installed with a third-stage cylinder flange (702).

6. The structure of a central staged pneumatic cylinder for a capsule vulcanizing machine according to claim 2, characterized in that, There are multiple air outlets (302), and the multiple air outlets (302) are distributed in a circular array on the top surface of the cylinder housing (1).

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