Silicone rubber protective cover mold with frameworks at two ends

Abstract

The utility model relates to a silicon rubber protective cover mold with frameworks at two ends. In the prior art, a forming mold of a silicone rubber protective cover is easy to shift during product production, the mold core is difficult to extract, the inner wall of a product is easy to scratch, and the production efficiency is lower. The mold comprises an upper mold, a mold core and a lower mold, wherein the mold core is corrugated; the mold core is divided into six parts which are assembled and fixed through detachable assemblies. A small-aperture framework is arranged at one end of the mold core for heat vulcanization, and a large-aperture framework is arranged at the other end of the mold core for normal-temperature vulcanization. When products are produced, core shift is not prone to occurring, the mold core is easy to take out, and production efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of mold processing, in particular to a silicone rubber protective cover mold with skeletons at both ends. Background Art

[0002] When operating at sea, ships face a complex and ever-changing marine environment, including high temperatures, high humidity, high salt spray, and the impact of wind and waves. These environmental factors pose a severe test to shipboard equipment and systems, necessitating the use of high-performance protective materials to protect critical equipment and systems. Silicone rubber protective covers, due to their unique properties, are a commonly used protective material on ships. Silicone rubber protective covers are widely used on ships, primarily in the following areas: protecting cables and wire harnesses, protecting engine rooms and engine components, protecting pipelines, isolating cabins and warehouses, and protecting electrical control panels and switch boxes.

[0003] In the prior art, the forming mold of the silicone rubber protective cover is prone to deflection during product production, and the mold core is difficult to extract and easily scratches the inner wall of the product, and the production efficiency is low.

[0004] Therefore, there is an urgent need for a silicone rubber protective cover mold that is not easily deflected during production, has an easy-to-remove mold core, and has high production efficiency. Summary of the Invention

[0005] The utility model aims to provide a silicone rubber protective cover mold with frames at both ends, so as to at least solve the problems of easy core deviation, difficulty in removing the mold core and low production efficiency of the existing mold.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the present utility model is:

[0007] A silicone rubber protective cover mold with frames at both ends, comprising an upper mold, a mold core and a lower mold;

[0008] The mold core is corrugated;

[0009] The mold core is divided into six parts and assembled and fixed by detachable components;

[0010] One end of the mold core is provided with a small-pore skeleton for hot vulcanization, and the other end is provided with a large-pore skeleton for room-temperature vulcanization.

[0011] Furthermore, the cross-section of the small-aperture skeleton is circular, with a small circular hole opened in the center.

[0012] Furthermore, a plurality of connection holes are provided around the small circular hole of the small-aperture skeleton.

[0013] Furthermore, the connecting hole is strip-shaped.

[0014] Furthermore, the cross-section of the large-aperture skeleton is circular, with a large circular hole in the center.

[0015] Furthermore, the large-aperture skeleton is provided with a plurality of circular holes away from the large circular hole.

[0016] Furthermore, the diameter of the small-pore skeleton is smaller than the diameter of the large-pore skeleton.

[0017] Furthermore, the mold core is provided with a skeleton groove at one end of the small-aperture skeleton.

[0018] Furthermore, the mold core is provided with a rubber bonding surface at one end of the large-aperture skeleton.

[0019] Furthermore, the diameters of the six parts of the mold core are all smaller than the diameter of the small circular hole of the small-aperture skeleton.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] 1. The utility model adopts a vulcanization method that combines hot vulcanization and room temperature vulcanization. Room temperature vulcanization can be carried out in batches after hot vulcanization, which greatly improves production efficiency. In addition, by designing the mold core into blocks, the risk of scratching the inner wall of the product during demoulding is reduced, making the mold core easy to remove. At the same time, one side of the frame adopts mold pressing hot vulcanization, which reduces the risk of product core deviation and improves the product qualification rate.

[0022] 2. The utility model is provided with a rubber bonding surface and a skeleton groove at both ends of the mold core. During subsequent assembly, the rubber bonding surface can be fixed to the installation position together with the large-aperture skeleton, reducing the risk of the large-aperture skeleton falling off after room temperature vulcanization, and the small-aperture skeleton can be directly placed in the skeleton groove. The entire operation process can be completed by one person, which is simple and quick. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, without paying any creative work, they can also obtain drawings of other embodiments based on these drawings.

[0024] Figure 1 It is a cross-sectional view of the mold core of the utility model;

[0025] Figure 2 It is a side sectional view of the utility model;

[0026] Figure 3 This is the front view of the small-aperture skeleton of the utility model;

[0027] Figure 4 This is the main view of the large-aperture skeleton of the utility model;

[0028] The symbols in the figure are:

[0029] 1-upper mold, 2-mold core, 3-lower mold, 4-small aperture skeleton, 41-small circular hole, 42-connecting hole, 5-large aperture skeleton, 51-large circular hole, 52-circular hole, 6-skeleton groove, 7-rubber bonding surface. DETAILED DESCRIPTION

[0030] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the disclosure of the present invention.

[0031] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," "connected," and "disposed" should be understood in a broad sense. For example, they may refer to fixed connection or disposition, detachable connection or disposition, or integral connection or disposition. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0033] Example:

[0034] like Figure 2 As shown, this embodiment provides a silicone rubber protective cover mold with frames at both ends, including an upper mold 1, a mold core 2 and a lower mold 3. A vulcanization method combining hot vulcanization and room temperature vulcanization is adopted. Room temperature vulcanization is carried out in batches after the hot vulcanization is completed, which can greatly improve production efficiency.

[0035] Specifically, if Figure 1 As shown, the mold core 2 is corrugated, so that the product is also corrugated, which is convenient for increasing the compressibility of the product, thereby meeting the requirements of the product's minimum compression height of 24 mm and maximum stretching height of 124 mm.

[0036] The mold core 2 is evenly divided into six parts along the radial direction and assembled and fixed by detachable components. The mold core 2 is divided for easy removal and operation. In this embodiment, the detachable components are rivets, and the six parts of the mold core are numbered respectively. When assembling, they are inserted into the pins according to the numbers, so that it is clear and convenient for different personnel to operate. After hot vulcanization is completed, the rivets are removed, the plug at one end is removed, and the middle pin is pulled out. The mold core 2 can be divided into six pieces and taken out one by one, thereby reducing the risk of scratching the protective cover during demolding.

[0037] A small-aperture skeleton 4 is provided at one end of the mold core 2 for hot vulcanization, which can ensure the overall movement of the divided mold core 2, reduce the risk of product core deviation, and improve the product qualification rate. A large-aperture skeleton 5 is provided at the other end of the mold core 2 for room temperature vulcanization, which can avoid the difficulty in extracting the mold core 2 and scratching the inner wall of the protective cover after hot vulcanization treatment. After the hot vulcanization is completed, qualified protective covers are selected for secondary room temperature vulcanization, which improves the product qualification rate and reduces the difficulty of operation.

[0038] In this embodiment, Figure 3 As shown, the cross-section of the small-aperture skeleton 4 is circular, with a small circular hole 41 in the center. Four connecting holes 42 are evenly spaced around the small circular hole 41 of the small-aperture skeleton 4. The connecting holes 42 are strip-shaped. The protective cover is fixed to the connection part of the ship cabin through the connecting holes 42, so that the protective cover can be stretched and compressed with the fluctuation of the hull.

[0039] The diameters of the six parts of the mold core 2 are all smaller than the diameter of the small circular hole 41 of the small-aperture skeleton 4, thereby facilitating the removal of the mold core 2.

[0040] like Figure 4 As shown, the cross section of the large-aperture skeleton 5 is circular, with a large circular hole 51 in the center, and four circular holes 52 are equally spaced around the large-aperture skeleton 5 away from the large circular hole 51 .

[0041] The diameter of the small-pore skeleton 4 is smaller than that of the large-pore skeleton 5 , and the diameter of the small circular hole 41 is smaller than that of the large circular hole 51 .

[0042] In this embodiment, the mold core 2 is located at one end of the small-aperture skeleton 4 and is provided with a skeleton groove 6 as large as the small-aperture skeleton 4. During hot vulcanization, the small-aperture skeleton 4 is directly placed in the skeleton groove 6, which is convenient and quick to operate.

[0043] The mold core 2 is located at one end of the large-aperture skeleton 5 and is provided with a rubber bonding surface 7 of the same size as the large-aperture skeleton 5. The thickness of the rubber bonding surface 7 is 1 mm. During subsequent assembly, the rubber bonding surface 7 can be fixed together with the large-aperture skeleton 5 at the installation position, reducing the risk of the large-aperture skeleton 5 falling off after room temperature vulcanization.

[0044] Since the protective cover needs to be resistant to seawater corrosion, the small-aperture skeleton 4 and the large-aperture skeleton 5 need to be processed in advance. Before production, the small-aperture skeleton 4 and the large-aperture skeleton 5 are coated with adhesive to facilitate subsequent operations.

[0045] The silicone rubber protective cover processed by this embodiment has a high pass rate, avoiding the scratches and debonding that are easy to occur in traditional processes. At the same time, in conjunction with the room temperature vulcanization process, the bonding treatment of large-aperture skeletons 5 can be carried out in batches to meet the production needs of a large number of protective covers. It is not limited to the products in this embodiment where only one end of the skeleton is room temperature vulcanized, which greatly improves production efficiency.

[0046] The operating steps of this embodiment are:

[0047] 1. Skeleton preprocessing

[0048] (1) The small-aperture frame 4 and the large-aperture frame 5 are both 2A12-T4 aluminum alloy frames, and the standard adopted is GJB2053A-2015;

[0049] (2) The pressed small-pore skeleton 4 and large-pore skeleton 5 are electrochemically anodized with sulfuric acid and then sealed with chromate;

[0050] (3) The small-pore skeleton 4 and the large-pore skeleton 5 that have undergone electrochemical treatment are then spray-painted and finally appear black;

[0051] (4) The small-aperture skeleton 4 and the large-aperture skeleton 5 are coated with the adhesive Kemlok 608. The small-aperture skeleton 4 has no front and back sides and can be coated on both sides. The large-aperture skeleton 5 has a countersunk hole 52 on the front side, which is coated with adhesive. The other side does not need to be coated with adhesive.

[0052] 2. Vulcanization

[0053] (1) Find the corresponding mold according to the drawing number and specifications required by the production plan chart, and grind and clean it;

[0054] (2) Use the long edge of the rubber strip to glue along the mold core 2, cut off the excess rubber material and set aside;

[0055] (3) placing the small-aperture skeleton 4 in the skeleton groove 6 and vulcanizing it by a molding hot vulcanization process;

[0056] (4) Close mold 1, pressurize, vent, and vulcanize. After vulcanization is completed, release the pressure, open the mold, take out the product, and apply a release agent.

[0057] 3. Cold bonding

[0058] (1) After vulcanization, trim the edges first to clean the excess rubber edges on the inside of the protective cover;

[0059] (2) Coat the large-pore skeleton 5 with room temperature vulcanized silicone RTV167 after brushing the adhesive, and then align the four small holes at one end of the molded hot-vulcanized product with the circular hole 52 for bonding. After bonding, place a heavy object on top of the product and perform a bonding inspection after 24 hours.

[0060] (3) During the inspection process, use a blade to remove excess room temperature vulcanized silicone rubber, clean the surface of the large-pore skeleton 5, and then perform the second stage of room temperature vulcanization.

[0061] The above examples are used to illustrate the present invention, which are only used to help understand the present invention and are not intended to limit the present invention. Those skilled in the art of the present invention can make some simple deductions, modifications or substitutions based on the concept of the present invention.

Claims

1. A silicone rubber protective cover mold with frames at both ends, comprising an upper mold (1), a mold core (2) and a lower mold (3), characterized in that: The mold core (2) is corrugated; The mold core (2) is divided into six parts and assembled and fixed by detachable components; One end of the mold core (2) is provided with a small-aperture skeleton (4) for thermal vulcanization, and the other end is provided with a large-aperture skeleton (5) for room-temperature vulcanization.

2. The silicone rubber protective cover mold with frames at both ends according to claim 1, characterized in that: The small-aperture skeleton (4) has a circular cross-section, with a small circular hole (41) provided at its center.

3. The silicone rubber protective cover mold with frames at both ends according to claim 2, characterized in that: A plurality of connection holes (42) are provided around the small circular hole (41) of the small-aperture skeleton (4).

4. The silicone rubber protective cover mold with frames at both ends according to claim 3, characterized in that: The connecting hole (42) is in a strip shape.

5. The silicone rubber protective cover mold with frames at both ends according to claim 1, characterized in that: The large-aperture skeleton (5) has a circular cross-section, with a large circular hole (51) opened in the center.

6. The silicone rubber protective cover mold with frames at both ends according to claim 5, characterized in that: The large-aperture skeleton (5) is provided with a plurality of circular holes (52) around the periphery away from the large circular hole (51).

7. The silicone rubber protective cover mold with frames at both ends according to claim 1, characterized in that: The diameter of the small-pore skeleton (4) is smaller than the diameter of the large-pore skeleton (5).

8. The silicone rubber protective cover mold with frames at both ends according to claim 1, characterized in that: The mold core (2) is provided with a skeleton groove (6) at one end of the small-aperture skeleton (4).

9. The silicone rubber protective cover mold with frames at both ends according to claim 1, characterized in that: The mold core (2) is provided with a rubber bonding surface (7) at one end of the large-aperture skeleton (5).

10. The silicone rubber protective cover mold with frames at both ends according to claim 2, characterized in that: The diameters of the six parts of the mold core (2) are all smaller than the diameter of the small circular hole (41) of the small-aperture skeleton (4).

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