Vulcanizing mold for rubber output shaft protection sleeve

Abstract

A vulcanization mold for a rubber output shaft protection sleeve relates to a rubber vulcanization mold, and is characterized in that a core mold mechanism and an outer sleeve (7) of the mold are positioned on a lower mold (2) through axial clearance fit of a positioning pin I (1) and a positioning pin III (3); the sectioning die (4) is mechanically matched and positioned by using a positioning block (16); the outer sleeve (7) is mechanically matched with the sectioning die (4) to enable the sectioning die to radially contact and apply pressure; an upper die (9) mechanically matches and positions an outer sleeve (7) and a core die mechanism, positioning blocks (16) and a first taper sleeve (3) module are in base hole interference mechanical fit to accurately position and fix left and right guide sliding blocks, the upper surfaces of the inner sides of the left and right positioning blocks (16) are in base hole clearance mechanical fit with a die splitting piece (4), and the rubber product is clamped by the die splitting piece (4) in the die assembly process; and the outer sleeve module (7) is mechanically matched with the sectioning module (4). The rubber corrugated pipe vulcanization mold with a vertical structure is formed, so that the vulcanization manufacturing and assembling process of the matched rubber output shaft protection sleeve is realized.

Description

Technical Field

[0001] This utility model relates to a rubber vulcanizing mold, and more particularly to a vulcanizing mold for a rubber output shaft protective sleeve. Background Technology

[0002] The rubber output shaft protective sleeve is a flexible connection device installed on a certain type of aircraft. This sleeve isolates engine compartment components and the main gearbox compartment, and provides some fire resistance. The sleeve is composed of a double-layered coated fabric and an outer rubber layer, belonging to the medium-pressure fabric-reinforced product category. It consists of two parts: a rubber corrugated pipe and a rubber flange base, with the flange base forming a 7° angle with the corrugated pipe. It is a composite rubber corrugated pipe product. The product has a complex structure, stringent performance requirements, and strict dimensional accuracy requirements. Because this sleeve operates under harsh conditions of contraction and compensation over extended periods, its quality and technical requirements are quite stringent.

[0003] Traditional manufacturing processes first involve pre-forming the rubber using the core mold mechanism of a vulcanizing mold. After pre-forming, the core mold is placed horizontally in the lower mold, and vulcanization is then performed using pressure applied by the upper mold of the vulcanizing mold.

[0004] Because the flange base of this product forms a 7° angle with the bellows, traditional horizontal vulcanization processes make it difficult to mold while maintaining the product's angle. Furthermore, as the temperature rises during vulcanization, the rubber flows, making it difficult to apply sufficient pressure to the flange base area. This results in uneven pressure on the flange base's circumference, affecting the product's quality and safety. Summary of the Invention

[0005] The purpose of this utility model is to provide a vulcanization mold for a rubber output shaft protective sleeve. This mold is formed by shaping the rubber product of the corrugated pipe composite flange base and applying full pressure after the flange base is accurately positioned, thus forming a vertical structure rubber corrugated pipe vulcanization mold, which realizes the matching "rubber output shaft protective sleeve vulcanization manufacturing and assembly process".

[0006] The objective of this utility model is achieved through the following technical solution:

[0007] A vulcanizing mold for a rubber output shaft protective sleeve is disclosed. The mold has a three-part structure (upper, middle, and lower), comprising an upper mold, an outer sleeve, a split mold, a core mold mechanism, a lower mold positioning pin 1, a positioning pin 2, a positioning pin 3, and a slider. The core mold mechanism includes a split core mold, a core mold shaft, a cone sleeve 1, a cone sleeve 2, a washer, and a hexagonal nut. The split mold is composed of two parts. The core mold mechanism and the outer sleeve are positioned on the lower mold using axial clearance fit with positioning pins 1 and 3. The split mold is mechanically positioned using positioning blocks. The outer sleeve mechanically fits the split mold to apply radial pressure. The upper mold mechanically positions the outer sleeve and the core mold mechanism. The positioning blocks and the cone sleeve 1 are press-fitted with a hole-based design to precisely position and fix the left and right guide sliders. The inner upper surfaces of the left and right positioning blocks are clearance-fitted with the split mold parts using a hole-based design. During mold closing, the split mold parts clamp the rubber product. The outer sleeve mold parts are mechanically fitted with the split mold parts.

[0008] The vulcanizing mold for a rubber output shaft protective sleeve, wherein the core mold mechanism and the outer sleeve are positioned on the lower mold by a clearance fit of positioning pin one and positioning pin three.

[0009] The vulcanizing mold for the rubber output shaft protective sleeve, wherein the slider and the cone sleeve are fitted with an interference fit using a hole-based system to ensure precise positioning and fixation of the left and right guide sliders.

[0010] The vulcanizing mold for the protective sleeve of the rubber output shaft is described above, wherein the inner side and upper surface of the left and right positioning blocks are mechanically fitted with the segmented mold using a hole-based clearance mechanism.

[0011] The vulcanizing mold for a rubber output shaft protective sleeve, wherein the upper mold is mechanically positioned in conjunction with the outer sleeve and the core mold mechanism.

[0012] The advantages and effects of this utility model are:

[0013] 1. This utility model provides a vertical structure vulcanizing mold for rubber corrugated pipe products, which solves the molding problem of the composite base structure of rubber corrugated pipes, and enables the two parts of the structure with their axes at an angle to each other to be easily loaded and unloaded.

[0014] 2. This utility model utilizes the mechanical fit between the outer jacket and the segmented mold to apply radial pressure to the segmented mold; the upper mold is mechanically fitted and positioned to fit the outer jacket and the core mold mechanism, thus ensuring the dimensional accuracy of the vulcanized product. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the mold structure of this utility model;

[0016] Figure 2 A schematic diagram of the structure that ensures the product's angle within the mold.

[0017] Components in the diagram: 1-Positioning pin one, 2-Lower mold, 3-Conical sleeve one, 4-Segmented mold, 5-Segmented core mold, 6-Core mold, 7-Outer sleeve, 8-Conical sleeve two, 9-Upper mold, 10-Rubber output shaft protective sleeve, 11-Handle, 12-Positioning pin two, 13-Washer, 14-Hexagonal nut, 15-Positioning pin three, 16-Slider. Detailed Implementation

[0018] The present invention will now be described in detail with reference to the embodiments shown in the accompanying drawings.

[0019] This utility model relates to a vulcanizing mold for a vertical structure rubber corrugated pipe composite flange base product. The mold has a three-part structure consisting of an upper mold 9, an outer sleeve 7, a split mold 4, a core mold mechanism, a lower mold 2, positioning pins 1-1, 2-2, 3-15, and a slider 16. The core mold mechanism is assembled from the split core mold 5, core mold shaft 6, tapered sleeve 3-3, tapered sleeve 2-8, washer 13, and hexagonal nut 14. The split mold 4 is a two-part mold. The core mold mechanism and the outer sleeve 7 are positioned on the lower mold 2 with axial clearance fit using positioning pins 1-1 and 3-3. The split mold 4 is mechanically positioned using positioning block 16. The outer sleeve 7 mechanically fits the split mold 4 to apply radial contact pressure. The upper mold 9 mechanically fits and positions the outer sleeve 7 and the core mold mechanism, ensuring the dimensional accuracy of the product. The positioning block 16 and the cone sleeve 3 are fitted with an interference fit using a hole-based system to precisely position and fix the left and right guide sliders. The inner upper surface of the left and right positioning blocks 16 is fitted with the split mold part 4 using a clearance fit using a hole-based system. During the mold closing process, the split mold part 4 clamps the rubber product and prevents positional rotation. The outer mold part 7 and the split mold part 4 are precisely fitted with each other, preventing mold "biting" and ensuring the accuracy of mold dimensions and specifications, as well as the dimensional accuracy of the rubber product. Example

[0020] In this embodiment, the vulcanizing mold is a three-part mold consisting of an upper mold, a middle mold, and a lower mold. It comprises an upper mold 9, an outer mold 7, a segmented mold 4, a core mold mechanism, and positioning pins 1-1, 2-2, 3-15, and a slider 16 in the lower mold 2. The core mold mechanism is assembled from the segmented core mold 5, core mold shaft 6, cone sleeve 3-3, cone sleeve 2-8, washer 13, and hexagonal nut 14. The segmented mold 4 is a two-part mold. During the molding and vulcanization process, the core mold mechanism and the outer mold 7 are positioned on the lower mold 2 using a clearance fit with positioning pins 1-1 and 3-15; the slider 16 and the cone sleeve 3 are precisely positioned and fixed by an interference fit using a hole-based system; the inner sides and upper surfaces of the left and right positioning blocks 16 are also in a clearance fit with the segmented mold 4 using a hole-based system; the outer mold 7 applies radial pressure to the segmented mold 4 through a mechanical fit; and the upper mold 9 applies axial pressure after positioning the outer mold 7 and the core mold mechanism through a mechanical fit. The mold will not "bite" and will be subjected to sufficient pressure in the axial and radial directions to vulcanize qualified rubber products.

[0021] The mold parts for this vulcanization mold are all made of 45 stainless steel. # High-quality carbon steel. Each mold part is machined according to the dimensions in the drawings, then quenched and tempered at high temperature. The surface treatment hardness is HRC28-32, the surface roughness of the product cavity is 1.6, and the surface roughness of the mechanical mating parts is 3.2.

Claims

1. A vulcanization mold for a rubber output shaft protection sleeve, characterized by, The mold is an upper, middle and lower three-opening mold structure, comprising an upper mold (9), an outer sleeve (7), a split mold (4), a core mold mechanism, a lower mold (2), a positioning pin one (1), a positioning pin two (12), a positioning pin three (15), a positioning block (16); wherein the core mold mechanism comprises a split core mold (5), a core mold shaft (6), a taper sleeve one (3), a taper sleeve two (8), a gasket (13), a hexagonal nut (14); the core mold mechanism and the outer sleeve (7) are positioned on the lower mold (2) by using the positioning pin one (1), the positioning pin two (12) and the positioning pin three (15) axial gap cooperation; the split mold (4) is radially contacted and pressed by using the mechanical cooperation of the outer sleeve (7); the upper mold (9) is mechanically cooperated and positioned with the outer sleeve (7) and the core mold mechanism; the split mold (4) is a two-piece mold module, and the split mold (4) is mechanically cooperated and positioned with the core mold mechanism by using the positioning block (16); the positioning block (16) and the taper sleeve one (3) module adopt a base hole design interference mechanical cooperation to accurately position and fix the left and right guide slides, and the inner side upper surface of the positioning block (16) and the split mold (4) adopt a base hole design gap mechanical cooperation, and the split mold (4) clamps the rubber product during the mold closing process; the outer sleeve (7) is mechanically cooperated with the split mold (4).

2. The vulcanization mold for a rubber output shaft protection sleeve according to claim 1, characterized by, The core mold mechanism and the outer sleeve (7) are positioned on the lower mold (2) by using the positioning pin one (1) and the positioning pin three (15) gap cooperation.

3. The vulcanization mold for a rubber output shaft protection sleeve according to claim 1, characterized by, The positioning block (16) and the taper sleeve one (3) module adopt a base hole design interference mechanical cooperation to accurately position and fix the left and right guide slides.

4. The vulcanization mold for a rubber output shaft protection sleeve according to claim 1, characterized by, The inner side and the upper surface of the positioning block (16) and the split mold (4) adopt a base hole design gap mechanical cooperation.

5. The vulcanization mold for a rubber output shaft protection sleeve according to claim 1, characterized by, The upper mold (9) is mechanically cooperated and positioned with the outer sleeve (7) and the core mold mechanism.

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