Split lower platen of steam chamber of tire vulcanizer

Abstract

The present invention discloses a split lower platen for a steam chamber of a tire vulcanizer, including a plate body. The plate body includes a lower support ring plate I sleeved and fixed on a central mechanism in a lower steam chamber and a lower support ring plate II supported by a piston rod of a power cylinder at the bottom of a mold. The lower support ring plate I is coaxially installed in a ring hole of the lower support ring plate II, and the upper and lower end faces of the lower support ring plate I and the lower support ring plate II are flush. A sealing ring I is provided between the installation surfaces of the lower support ring plate I and the lower support ring plate II. In the present invention, the original lower platen is decomposed into a lower support ring plate I and a lower support ring plate II, so that the use function of the lower platen is divided into two. When replacing the seal of the piston rod of the booster cylinder, only the lower support ring plate II needs to be removed, greatly reducing the time required for disassembly and assembly and greatly reducing the difficulty of maintenance operations.

Description

Technical Field

[0001] The present invention relates to the structural components of a tire shaping vulcanizer, and particularly to a split lower platen for the steam chamber of a tire vulcanizer. Background Art

[0002] The lower platen of the steam chamber of a hydraulic tire vulcanizer is placed between the piston rod of the power cylinder and the mold, and is used to support the mold and fix the central mechanism; during vulcanization, high-temperature and high-pressure steam is introduced into the chamber of the steam chamber as the vulcanization medium, and the vulcanization medium heats the mold and the lower platen in the chamber to vulcanize the tire. The steam chamber relies on a variety of sealing structures to prevent steam from leaking outwards.

[0003] In the structure of the existing steam chamber (including the upper steam chamber and the lower steam chamber), the sealing position at its lower part is between the piston rod of the booster cylinder and the lower steam chamber. During maintenance, it is necessary to first remove the lower platen, the central mechanism and the relevant connecting pipelines, and then open the cover plate for fixing each sealing ring before the sealing ring can be inspected and repaired. After the maintenance is completed, it is also necessary to reinstall each cover plate, the lower platen and the central mechanism. During this maintenance process, a lifting device and personnel cooperation are required.

[0004] It can be seen that due to the limitation of the structure of the lower platen, the traditional steam chamber requires a large number of maintenance operators, a lifting device and a crane operator; because important components are removed, it is also necessary to coordinate the site occupation and the equipment operation arrangement. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the technical problem to be solved by the present invention is to provide a split lower platen for the steam chamber of a tire vulcanizer that is easy to maintain the lower seal of the steam chamber.

[0006] The split lower platen for the steam chamber of a tire vulcanizer that can solve the above technical problems includes a plate body. The difference is that the plate body includes a lower support ring plate I sleeved and fixed on the central mechanism in the lower steam chamber and a lower support ring plate II supported by the piston rod of the power cylinder at the bottom of the mold. The lower support ring plate I is coaxially installed in the ring hole of the lower support ring plate II, and the upper and lower end faces of the lower support ring plate I and the lower support ring plate II are flush. A sealing ring I is provided between the installation surfaces of the lower support ring plate I and the lower support ring plate II.

[0007] Further, the outer ring part of the lower support ring plate I is a stepped shaft structure, the ring hole of the lower support ring plate II is a stepped hole structure matching the stepped shaft structure, and the lower support ring plate I and the lower support ring plate II are assembled through the stepped shaft and hole structure and are fixedly connected by bolt parts I evenly distributed in the circumferential direction.

[0008] Advantages of the Present Invention

[0009] 1. In the structure of the split lower platen of the steam chamber of the tire vulcanizer of the present invention, due to the adoption of the split lower support ring plate I and the lower support ring plate II, when overhauling the lower seal of the steam chamber, only the lower support ring plate II needs to be removed to perform the overhaul and replacement of the sealing ring II between the piston rod of the power cylinder and the lower steam chamber. Since there is no need to disassemble and assemble any pipeline components and the central mechanism, the time required for disassembly and assembly is greatly reduced, and the difficulty of maintenance work is greatly reduced.

[0010] 2. In the structure of the present invention, the assembled lower support ring plate I and the lower support ring plate II can maintain the universality with the original structure, and the sealing effect and the use effect of the original structure will not change, but the difficulty and time for replacing the sealing ring II between the piston rod of the booster cylinder and the lower steam chamber can be greatly reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic structural diagram of an embodiment of the present invention.

[0012] Figure 2 is Figure 1 An installation schematic diagram of the embodiment in the lower steam chamber.

[0013] Reference numerals: 1. Lower steam chamber; 2. Central mechanism; 3. Lower support ring plate I; 4. Lower support ring plate II; 5. Sealing ring I; 6. Bolt member I; 7. Power cylinder; 7-1. Piston rod; 8. Cover plate; 9. Seat sleeve; 10. Cushion; 11. Sealing ring II; 12. Bolt member II. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0014] The technical solutions of the present invention will be further described below in conjunction with the embodiments shown in the drawings.

[0015] The split lower platen of the steam chamber of the tire vulcanizer of the present invention includes a plate body provided at the lower part of the lower steam chamber 1. A central mechanism 2 penetrates through the center of the bottom of the lower steam chamber 1. Two or more power cylinders 7 are evenly installed around the central mechanism 2 at the bottom of the lower steam chamber 1. The piston rod 7-1 of the power cylinder 7 passes upward through the bottom of the lower steam chamber 1 into the chamber. A lower sealing ring limited by a cover plate 8 is provided at the through-hole of each piston rod 7-1 at the bottom of the lower steam chamber 1, as Figure 2 shown.

[0016] The plate body of the lower support plate is a split structure. The plate body includes a lower support ring plate I 3 in the middle and a lower support ring plate II 4 on the outside. A seat sleeve 9 is coaxially welded to the end face of the lower support ring plate I 3 at the upper opening of the annular hole of the lower support ring plate I 3. The outer ring part of the lower support ring plate I 3 is turned into a stepped shaft shape with a smaller upper part and a larger lower part. Threaded holes I are evenly distributed in the circumferential direction on the lower shaft step of the lower support ring plate I 3. Sealing grooves are coaxially opened on the lower shaft step inside each threaded hole I. Sealing rings I 5 are arranged in the sealing grooves; the annular hole of the lower support ring plate II 4 is turned into a stepped hole shape with a smaller upper part and a larger lower part. The shape and size of the stepped hole match the shape and size of the stepped shaft. Corresponding to the lower shaft hole part, bolt holes that are the same in number as the threaded holes I and are located on the same circumference are evenly distributed in the circumferential direction on the top of the lower support ring plate II 4. The lower support ring plate I 3 in the shape of a stepped shaft is fitted into the stepped hole annular hole of the lower support ring plate II 4, and the upper and lower end faces of the lower support ring plate I 3 and the lower support ring plate II 4 are flush. Align each bolt hole with the threaded hole I and use bolt parts I 6 to fasten the lower support ring plate I 3 and the lower support ring plate II 4 into one body, as Figure 1 shown.

[0017] Threaded holes II that are the same in number as the power cylinders 7 are evenly distributed in the circumferential direction on the top of the lower support ring plate II 4. And the circumferences where the centers of each threaded hole II are located are the same as the circumferences where the centers of each piston rod 7-1 are located. Bolt parts II 12 are screwed into each threaded hole II to fasten the corresponding cushion 10 to the bottom of the lower support ring plate II 4, as Figure 2 shown.

[0018] The plate body fastened into one body by the lower support ring plate I 3 and the lower support ring plate II 4 is sleeved and fixed on the central mechanism 2 through the seat sleeve 9 and placed at the lower part of the lower steam chamber 1. Each cushion 10 at the bottom of the lower support ring plate II 4 is seated on the piston rod 7-1 of the corresponding power cylinder 7. Each piston rod 7-1 supports the mold in the lower steam chamber 1 through the lower support ring plate II 4. The central mechanism 2 extends upward into the mold, as shown in Figure 2 shown.

[0019] In the structure of the present invention, the use function of the original lower support plate in the prior art is divided into two parts, that is, the plate body of the lower support plate is divided into a lower support ring plate I 3 and a lower support ring plate II 4 that are connected to each other. When replacing the sealing rings II 11 (lower seal of the lower steam chamber 1) of each piston rod 7-1, only the lower support ring plate II 4 needs to be removed, and then the sealing rings II 11 can be directly repaired and replaced without removing the central mechanism 2 and its related connecting pipelines, which can greatly reduce the replacement difficulty and replacement time of the sealing rings II 11 between the piston rods 7-1 of each power cylinder 7 and the lower steam chamber 1.

Claims

1. Split lower carrier plate of steam chamber of tire vulcanizer, including a plate body provided at the lower part of the lower steam chamber (1). A central mechanism (2) is penetrated through the center of the bottom of the lower steam chamber (1). More than two power cylinders (7) are evenly installed around the central mechanism (2) at the bottom of the lower steam chamber (1). The piston rod (7-1) of the power cylinder (7) passes upward through the bottom of the lower steam chamber (1) into the chamber. At the outlet of each piston rod (7-1) passing through the bottom of the lower steam chamber (1), a sealing ring II (11) limited by a cover plate (8) is provided. It is characterized in that: The plate body of the lower carrier plate is a split structure. The plate body includes a lower carrier ring plate I (3) in the middle and a lower carrier ring plate II (4) on the outside. The upper opening of the ring hole of the lower carrier ring plate I (3) is provided with a seat sleeve (9) welded coaxially on the end face of the lower carrier ring plate I (3). The outer ring part of the lower carrier ring plate I (3) is turned into a stepped shaft shape with a smaller upper part and a larger lower part. Threaded holes I are evenly opened in the circumferential direction on the lower shaft step of the lower carrier ring plate I (3). Sealing grooves are coaxially opened on the lower shaft step inside each threaded hole I. A sealing ring I (5) is arranged in the sealing grooves. The ring hole of the lower carrier ring plate II (4) is turned into a stepped hole shape with a smaller upper part and a larger lower part. The shape and size of the stepped hole match the shape and size of the stepped shaft. Corresponding to the lower shaft hole part, bolt holes with the same number as the threaded holes I and located on the same circumference are evenly opened on the top circumference of the lower carrier ring plate II (4). The lower carrier ring plate I (3) with a stepped shaft shape is fitted into the stepped hole ring hole of the lower carrier ring plate II (4), and the upper and lower end faces of the lower carrier ring plate I (3) and the lower carrier ring plate II (4) are flush. Align each bolt hole with the threaded hole I and use bolt parts I (6) to fasten the lower carrier ring plate I (3) and the lower carrier ring plate II (4) into one body; Threaded holes II with the same number as the power cylinders (7) are evenly opened on the top circumference of the lower carrier ring plate II (4), and the circumference where the centers of each threaded hole II are located is the same as the circumference where the centers of each piston rod (7-1) are located. Bolt parts II (12) are screwed into each threaded hole II to fasten the corresponding support pads (10) to the bottom of the lower carrier ring plate II 4; The plate body fastened by the lower carrier ring plate I (3) and the lower carrier ring plate II (4) is sleeved and fixed on the central mechanism (2) through the seat sleeve (9) and placed at the lower part of the lower steam chamber (1). Each support pad (10) at the bottom of the lower carrier ring plate II (4) is seated on the piston rod (7-1) of the corresponding power cylinder (7). Each piston rod (7-1) supports the mold in the lower steam chamber (1) through the lower carrier ring plate II (4), and the central mechanism (2) extends upward into the mold; The lower carrier plate is divided into a lower carrier ring plate I (3) and a lower carrier ring plate II (4) connected to each other. When replacing the sealing ring II (11) of each piston rod (7-1), that is, the lower seal of the lower steam chamber (1), only the lower carrier ring plate II (4) needs to be removed to directly repair and replace each sealing ring II (11), without removing the central mechanism (2) and its related connecting pipelines.

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