Radial tire hydraulic vulcanizing machine

Abstract

The utility model provides a hydraulic vulcanizing machine for a radial tire, which comprises an upper die assembly, a lower die assembly and a lower die assembly, the upper die assembly comprises an outer shell and a forming area, and a sealing ring is arranged on the end face of the outer shell; a sealing groove assembly is arranged on the peripheral side of the bottom die assembly, and the sealing ring is connected with the sealing groove assembly in an inserted mode; a plurality of groups of limiting holes are formed in the inner wall of the sealing ring, a limiting column of a magnetic ring, a limiting seat provided with an electromagnet and a supporting spring are arranged in the sealing groove assembly, and the limiting column extends out of the limiting seat under the action of the supporting spring and is inserted into the limiting holes; the electromagnet is electrified to generate electromagnetic force and then forms repulsive force with the magnetic ring to help the supporting spring to abut the limiting column in the limiting hole. The electromagnetic structure principle is used for being matched with the supporting spring to enhance the connectivity of the sealing ring and the sealing groove assembly, and the pressure between the upper die assembly and the bottom die assembly is kept stable in the machining process.

Description

Technical Field

[0001] The utility model belongs to the technical field of radial tire processing, in particular to a radial tire hydraulic vulcanizer. Background Art

[0002] The radial tire consists of six main parts: tread, carcass, sidewall, buffer layer (or belt layer), bead, and inner liner (or airtight layer). During the processing of radial tires, hydraulic vulcanization treatment is required. Tire vulcanization is a process in which a rubber material with certain plasticity and viscosity is converted into a soft elastic rubber product or a hard tough rubber product under certain external conditions through the action of chemical or physical factors, thereby obtaining performance.

[0003] In the processing, the radial tire blank to be formed is generally placed in a hydraulic vulcanizer, and a qualified radial tire is finally formed after a certain period of processing. In order to ensure the smooth progress of the processing, it is necessary to maintain a stable internal pressure of the equipment. Usually, the sealing component of the hydraulic vulcanizer will form a seal on the mold surface after mold closing to reduce the leakage of internal pressure. In the prior art, the locking device on the sealing structure mostly adopts a single locking structure such as a spring structure, which not only meets the need for automatic opening when opening the mold but also maintains the pressure requirement in the mold closing stage. The spring parts are prone to loosening after long-term use, resulting in a decrease in the connection strength of the sealing structure at the mold closing, which ultimately leads to a decrease in the sealing performance. Utility Model Content

[0004] The utility model provides a radial tire hydraulic vulcanizer, aiming to solve the problem that the existing spring parts are prone to loosening after long-term use, resulting in reduced connection strength of the sealing structure at the mold closing position, and ultimately leading to reduced sealing performance.

[0005] The utility model is implemented in this way: a radial tire hydraulic vulcanizer, comprising:

[0006] An upper mold assembly, the upper mold assembly comprising an outer shell and a molding area, the end surface of the outer shell is provided with a sealing ring, and the molding area is provided with a mold for tire processing;

[0007] A bottom mold assembly, wherein a sealing groove assembly is provided on the periphery of the bottom mold assembly, and the sealing ring is plugged into the sealing groove assembly;

[0008] The inner wall of the sealing ring is provided with several groups of limit holes, and the sealing groove assembly is provided with a limit column, a limit seat and a support spring. Under the action of the support spring, the limit column extends out of the limit seat and is inserted into the limit hole; the end face of the limit column facing the limit seat is provided with a magnetic ring, and the limit seat is provided with an electromagnet. After the electromagnet is energized to generate electromagnetic force, a repulsive force is formed with the magnetic ring to help the support spring to hold the limit column in the limit hole.

[0009] Preferably, the annular array of limiting holes is distributed on the inner wall of the sealing ring, the limiting columns and limiting seats constitute a group of limiting units, and the limiting units are distributed in the sealing groove assembly in a one-to-one correspondence with the positions of the limiting holes.

[0010] Preferably, the sealing groove assembly comprises an annular frame and an embedding groove, the embedding groove is arranged on the annular frame, and the side wall of the embedding groove is provided with a first sealing rubber ring and a second sealing rubber ring.

[0011] Preferably, after the sealing ring is inserted into the sealing groove assembly, the inner wall of the sealing ring is in contact with and connected to the second sealing rubber ring, and the outer wall of the sealing ring is in contact with and connected to the first sealing rubber ring.

[0012] Preferably, the limiting column comprises a front column body, a different diameter column and a limiting baffle plate, wherein the front column body and the limiting baffle plate are respectively arranged at two ends of the different diameter column, and the front column body passes through the limiting seat and extends into the limiting hole.

[0013] Preferably, the interior of the limit seat is divided into a first sliding area and a second sliding area by a partition;

[0014] The front column slides in the first sliding area, and the different-diameter column penetrates the partition and is connected with the limit baffle located in the second sliding area.

[0015] Preferably, the magnetic ring is arranged on the end surface of the front column facing the partition.

[0016] Preferably, an electromagnet is provided on the end surface of the partition facing the front column.

[0017] Preferably, one end of the support spring is connected to the limit seat, and the other end is abutted against the end surface of the limit baffle away from the different-diameter column.

[0018] Preferably, a different-diameter hole for accommodating different-diameter columns is provided at the center of the partition.

[0019] Compared with the prior art, the embodiments of the present application have the following beneficial effects:

[0020] The radial tire hydraulic vulcanizer provided by the utility model is provided with a magnetic ring and an electromagnet respectively between a limit column and a limit seat. When the electromagnet is energized, a repulsive force is generated between the electromagnet and the magnetic ring to enhance the thrust received by one end of the limit column. The electromagnetic structure principle is used in conjunction with a supporting spring to enhance the connectivity of the sealing ring and the sealing groove assembly, thereby maintaining the pressure stability between the upper mold assembly and the bottom mold assembly during the processing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 The utility model is a structural schematic diagram of a radial tire hydraulic vulcanizer provided by the utility model.

[0022] Figure 2The utility model is a schematic diagram of the bottom structure of an upper mold component of a radial tire hydraulic vulcanizer.

[0023] Figure 3 The utility model is a schematic diagram of the structure of a sealing groove component of a radial tire hydraulic vulcanizer.

[0024] Figure 4 The utility model is a structural schematic diagram of a cross section of a middle sealing groove assembly of a radial tire hydraulic vulcanizer.

[0025] Figure 5 The utility model is a schematic diagram of a limit column and a limit seat structure of a radial tire hydraulic vulcanizer.

[0026] Figure 6 The utility model is a schematic diagram of the inner ring wall structure of a sealing ring of a radial tire hydraulic vulcanizer.

[0027] Description of reference numerals:

[0028] 100, upper mold assembly; 110, outer shell; 120, sealing ring; 121, limiting hole; 130, molding area; 200, bottom mold assembly; 300, sealing groove assembly; 310, annular frame; 320, embedded groove; 331, first sealing rubber ring; 332, second sealing rubber ring; 400, mold; 510, limiting column; 511, front column; 512, conical surface; 513, limiting baffle; 514, different diameter column; 515, magnetic ring; 520, limiting seat; 521, first sliding area; 522, second sliding area; 523, partition; 524, electromagnet; 530, support spring. DETAILED DESCRIPTION

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, not to describe a specific order.

[0030] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0031] The utility model embodiment provides a radial tire hydraulic vulcanizer, such as Figure 1-Figure 6 As shown, the radial tire hydraulic vulcanizer comprises:

[0032] An upper mold assembly 100, the upper mold assembly 100 comprises an outer shell 110 and a molding area 130 arranged at the center of the outer shell 110, a sealing ring 120 is arranged on the end surface of the outer shell 110, and a mold 400 for tire processing is arranged in the molding area 130;

[0033] A bottom mold assembly 200, wherein a sealing groove assembly 300 is disposed on the periphery of the bottom mold assembly 200, and the sealing ring 120 is plugged into the sealing groove assembly 300;

[0034] The inner wall of the sealing ring 120 is provided with a plurality of groups of limiting holes 121, and the sealing groove assembly 300 is provided with a limiting column 510, a limiting seat 520 and a supporting spring 530. The limiting column 510 includes a front column 511, a different diameter column 514 and a limiting baffle 513. The inside of the limiting seat 520 is divided into a first sliding area 521 and a second sliding area 522 by a partition 523. The front column 511 slides in the first sliding area 521, and the different diameter column 514 penetrates the partition 523 and is connected to the limiting baffle 513 located in the second sliding area 522; the supporting spring 530 is located in the second sliding area 522, and one end of the supporting spring 530 is connected to the limiting seat 520, and the other end abuts against the end of the limiting baffle 513 away from the different diameter column 514;

[0035] Here, the end surface of the front pillar 511 facing the partition 523 is provided with a magnetic ring 515, and the end surface of the partition 523 facing the front pillar 511 is provided with an electromagnet 524. When the electromagnet 524 is energized, it generates an electromagnetic force that forms a repulsive force with the magnetic force of the magnetic ring 515, so that the front pillar 511 extends toward the outside of the limiting seat 520 and is inserted into the limiting hole 121, helping the support spring 530 to enhance the effect of the sealing groove assembly 300 on limiting and fixing the sealing ring 120;

[0036] In the present application, the upper mold assembly 100 and the bottom mold assembly 200 are basically the same in structure as the hydraulic vulcanization equipment in the prior art. The upper mold assembly 100 is mainly responsible for loading the flexible mold on the top of the bottom mold assembly 200, and completing the vulcanization process by applying pressure through the hydraulic equipment (not shown in the figure). This part of the structure is based on the principle of the prior art, and this part of the structure is not described in detail here. During the mold closing process of the upper mold assembly 100 and the bottom mold assembly 200, the sealing ring 120 located on the end face of the upper mold assembly 100 will be inserted into the sealing groove assembly 300 on the bottom mold assembly 200, and a closed vulcanization processing area is formed between the upper mold assembly 100 and the bottom mold assembly 200 through sealing;

[0037] The magnetic ring 515 and the electromagnet 524 described here are both prior art. After the electromagnet 524 is powered on, the direction of the magnetic ring 515 toward the magnetic pole of the electromagnet 524 is set to be opposite to the direction of the magnetic pole of the electromagnet 524 toward the magnetic ring 515, so that the electromagnet 524 and the magnetic ring 515 can generate a repulsive force, and the limit column 510 can be pushed into the limit hole 121. At the same time, the current of the electromagnet 524 can be increased as needed to enhance the magnetic force of the electromagnet 524, enhance the resistance to the limit column 510, and maintain the pressure holding process by enhancing the connectivity between the sealing ring 120 and the sealing groove assembly 300;

[0038] As a preferred implementation in this embodiment, the sealing groove assembly 300 includes an annular frame 310 and an embedded groove 320, the embedded groove 320 is arranged on the annular frame 310, and the side wall of the embedded groove 320 is provided with a first sealing rubber ring 331 and a second sealing rubber ring 332; the second sealing rubber ring 332 is located on the side wall of the embedded groove 320 closer to the center of the annular frame 310, and the first sealing rubber ring 331 is arranged on the side wall of the embedded groove 320 away from the center of the annular frame 310;

[0039] The sealing groove assembly 300 can be directly arranged on the side of the bottom mold assembly 200, or a ring groove capable of accommodating the sealing groove assembly 300 can be provided on the side of the bottom mold assembly 200 for embedding design. The sealing groove assembly 300 and the bottom mold assembly 200 are detachably connected.

[0040] As a preferred implementation in this embodiment, the limiting seat 520 is arranged on the side wall of the embedding groove 320 where the second sealing rubber ring 332 is arranged, and the limiting column 510 extends out of the limiting seat 520 under the action of the supporting spring 530;

[0041] The center of the partition 523 is provided with a different diameter hole, and the different diameter hole accommodates the different diameter column 514 to pass through; and the end of the front column 511 away from the limit baffle 513 is a conical surface 512, and the inclined surface structure can be used to reduce the resistance during the insertion of the sealing ring 120;

[0042] In this embodiment, the limiting hole 121 is arranged on the inner ring wall of the sealing ring 120. After the sealing ring 120 is inserted into the sealing groove assembly 300, the inner wall of the sealing ring 120 is in contact with and connected to the second sealing rubber ring 332, and the outer wall of the sealing ring 120 is in contact with and connected to the first sealing rubber ring 331.

[0043] In a further preferred embodiment of the utility model, an annular groove is provided on the end surface of the front cylinder 511 away from the conical surface 512, and a stepped structure is formed on the side wall of the front cylinder 511, and the magnetic ring 515 is nested in the annular groove on the front cylinder 511;

[0044] It should be noted that, for the above-mentioned embodiments, for the sake of simplicity, they are all described as a series of action combinations, but those skilled in the art should know that the utility model is not limited by the described action sequence, because according to the utility model, some steps may be performed in other sequences or simultaneously. Secondly, those skilled in the art should also know that the embodiments described in the specification are all preferred embodiments, and the actions and modules involved are not necessarily required by the utility model.

[0045] The above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit the protection scope of the utility model. Obviously, the described embodiments are only some embodiments of the utility model, rather than all embodiments. Based on these embodiments, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model. Although the utility model has been described in detail with reference to the above embodiments, ordinary technicians in this field can still combine, add, delete or make other adjustments to the features in the various embodiments of the utility model according to the circumstances without conflict, without making creative work, so as to obtain different other technical solutions that do not deviate from the concept of the utility model in essence, and these technical solutions also belong to the scope of protection of the utility model.

Claims

1. A radial tire hydraulic vulcanizer, characterized in that: include: An upper mold assembly (100), the upper mold assembly (100) comprising an outer shell (110) and a molding area (130), the end surface of the outer shell (110) being provided with a sealing ring (120), and a mold (400) for tire processing being provided in the molding area (130); A bottom mold assembly (200), wherein a sealing groove assembly (300) is provided on the periphery of the bottom mold assembly (200), and the sealing ring (120) is plugged into the sealing groove assembly (300); The inner wall of the sealing ring (120) is provided with a plurality of groups of limiting holes (121); the sealing groove assembly (300) is provided with a limiting column (510), a limiting seat (520) and a supporting spring (530); the limiting column (510) extends out of the limiting seat (520) and is inserted into the limiting hole (121) under the action of the supporting spring (530); the end surface of the limiting column (510) facing the limiting seat (520) is provided with a magnetic ring (515); the limiting seat (520) is provided with an electromagnet (524); after the electromagnet (524) is energized to generate an electromagnetic force, a repulsive force is formed with the magnetic ring (515), thereby helping the supporting spring (530) to hold the limiting column (510) in the limiting hole (121).

2. A radial tire hydraulic vulcanizer according to claim 1, characterized in that: The limiting holes (121) are distributed in an annular array on the inner wall of the sealing ring (120); the limiting columns (510) and the limiting seats (520) form a group of limiting units; and the limiting units are distributed in the sealing groove assembly (300) in a one-to-one correspondence with the limiting holes (121).

3. A radial tire hydraulic vulcanizer as claimed in claim 2, characterized in that: The sealing groove assembly (300) comprises an annular frame (310) and an embedding groove (320), wherein the embedding groove (320) is arranged on the annular frame (310), and a first sealing rubber ring (331) and a second sealing rubber ring (332) are arranged on the side wall of the embedding groove (320).

4. A radial tire hydraulic vulcanizer as claimed in claim 3, characterized in that: After the sealing ring (120) is inserted into the sealing groove assembly (300), the inner wall of the sealing ring (120) is in contact with and connected to the second sealing rubber ring (332), and the outer wall of the sealing ring (120) is in contact with and connected to the first sealing rubber ring (331).

5. A radial tire hydraulic vulcanizer as claimed in claim 4, characterized in that: The limiting column (510) comprises a front column body (511), a different-diameter column (514) and a limiting baffle (513); the front column body (511) and the limiting baffle (513) are respectively arranged at two ends of the different-diameter column (514); the front column body (511) passes through the limiting seat (520) and extends into the limiting hole (121).

6. A radial tire hydraulic vulcanizer as claimed in claim 5, characterized in that: The interior of the limiting seat (520) is divided into a first sliding area (521) and a second sliding area (522) by a partition (523); The front column (511) slides in the first sliding area (521), and the different-diameter column (514) penetrates the partition plate (523) and is connected to the limit baffle (513) located in the second sliding area (522).

7. A radial tire hydraulic vulcanizer as claimed in claim 6, characterized in that: The end surface of the front column (511) of the magnetic ring (515) faces the partition (523).

8. A radial tire hydraulic vulcanizer as claimed in claim 7, characterized in that: The electromagnet (524) is arranged on the end surface of the partition (523) facing the front column (511).

9. A radial tire hydraulic vulcanizer as claimed in claim 8, characterized in that: One end of the support spring (530) is connected to the limiting seat (520), and the other end is abutted against the end surface of the limiting baffle (513) away from the different-diameter column (514).

10. A radial tire hydraulic vulcanizer as claimed in claim 9, characterized in that: A different-diameter hole for accommodating the different-diameter column (514) to pass through is provided at the center of the partition (523).

Images