Vulcanization forming mold for marine rubber flexible joint

Abstract

The utility model relates to the technical field of vulcanization forming molds, in particular to a vulcanization forming mold for a marine rubber flexible joint, which is characterized in that a middle penetrating rod and a pair of side penetrating rods are mounted between a middle mold and a lower mold, and the pair of side penetrating rods are symmetrically arranged on two sides of the middle penetrating rod; the framework cavity is arranged between the side penetrating rod and the middle penetrating rod; a framework supporting rod is installed between the side penetrating rod and the middle penetrating rod and used for penetrating through a through hole formed in the metal framework, so that the metal framework is in a suspended state in the framework cavity. A side stop block is mounted on the side penetrating rod, and a middle stop block is mounted on the middle penetrating rod; the side check blocks and the middle check blocks are used for abutting against the two ends of the metal framework respectively. According to the utility model, the flatness problem of the skeleton product is solved, the qualified rate and the inspection efficiency of the product are improved, and the demolding problem of the product is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to vulcanization forming mould technical field, concretely relates to a marine rubber flexible joint vulcanization forming mould. BACKGROUND

[0002] The marine rubber flexible joint mainly has the following effects:

[0003] Axial displacement compensation: In the marine environment, due to the flow of seawater, temperature change and the operation of marine facilities and other factors, the pipeline will produce axial thermal expansion and contraction. Rubber flexible joint can stretch or compress to a certain extent in the axial direction, absorb the axial displacement change of the pipeline, prevent the pipeline from being damaged due to excessive axial stress.

[0004] Lateral displacement compensation: The pipeline in marine engineering may be affected by the transverse force of waves, ocean currents and other factors, resulting in lateral displacement of the pipeline. The flexible structure of the rubber flexible joint can allow the pipeline to move laterally within a certain range, thereby adapting to the lateral displacement and protecting the safety of the pipeline system.

[0005] Angular displacement compensation: When there is an angular deviation between the two ends of the pipeline or there is a certain angular error in the installation process, the rubber flexible joint can compensate for the angular displacement through its elastic deformation, ensuring the tightness of the pipeline connection and normal operation.

[0006] Shock absorption: In marine platforms, ships and other marine facilities, the operation of various equipment and the impact of waves will produce vibration. When these vibrations are transmitted through the pipeline, the rubber flexible joint can use the elastic properties of rubber to convert the vibration energy into the deformation energy of rubber, thereby effectively reducing the transmission of vibration, reducing the vibration amplitude of the pipeline system and protecting the safety of the pipeline and related equipment.

[0007] Noise reduction: The reduction of vibration also helps to reduce the noise generated during the operation of the pipeline system. The rubber flexible joint can absorb the sound wave energy in the pipeline, reduce the propagation of noise and provide a more quiet working and living condition for the marine environment.

[0008] Prevent seawater corrosion: Seawater contains a large amount of salt, minerals and other chemical substances, which have strong corrosive effect on metal materials. The rubber flexible joint is made of rubber materials resistant to seawater corrosion, such as neoprene, ethylene propylene diene rubber, etc. These materials can effectively resist the corrosive components in seawater, protect the pipeline system from the influence of seawater corrosion and prolong the service life of the pipeline.

[0009] Easy to install: Rubber flexible joints are light in weight, small in size, and have good flexibility, so they do not require complex tools and equipment during installation and can be quickly and conveniently installed on pipelines. They have various connection methods, such as flange connection, threaded connection, and clamp connection, which can adapt to different pipeline connection requirements.

[0010] Easy to maintain: Compared with traditional metal joints, rubber flexible joints are not prone to rust and scaling, and have low maintenance costs. When replacement or repair is needed, the old joint can be simply disassembled and replaced with a new one, which is simple and convenient to operate.

[0011] Adapt to uneven settlement of pipeline: In marine engineering, the geological conditions of the seabed are complex, and the pipeline may be affected by uneven settlement of the foundation. Rubber flexible joints can adapt to the uneven settlement of the pipeline to some extent, avoid stress concentration and damage of the pipeline due to settlement, and ensure the stability of the pipeline system.

[0012] In order to prevent the rust of the rubber flexible joint, the metal skeleton of the rubber flexible joint is now made of stainless steel material, and then rubber is attached to the skeleton. For such rubber flexible joints, how to make the flatness of the product meet the requirements and how to improve the efficiency of product vulcanization demolding have become problems that the industry urgently needs to solve. Invention content

[0013] In order to solve the problem of how to make the flatness of the product meet the requirements and how to improve the efficiency of product demolding, the purpose of the present application is to provide a rubber flexible joint for marine use vulcanization forming mold.

[0014] The technical scheme provided by the present application is:

[0015] In a first aspect, a rubber flexible joint for marine use vulcanization forming mold includes a lower mold, a middle mold, and an upper mold stacked in sequence; the lower mold is provided with a lower mold cavity, and the middle mold is provided with a middle mold cavity matched with the lower mold cavity; the lower mold cavity and the middle mold cavity form a skeleton cavity; the middle mold is further provided with a glue injection port communicated with the skeleton cavity;

[0016] A middle penetrating rod and a pair of side penetrating rods are installed between the middle mold and the lower mold, and the pair of side penetrating rods are symmetrically arranged on both sides of the middle penetrating rod; the skeleton cavity is arranged between the side penetrating rod and the middle penetrating rod;

[0017] A skeleton support rod is installed between the side penetrating rod and the middle penetrating rod, and the skeleton support rod is used to pass through the through hole of the metal skeleton, so that the metal skeleton is in a suspended state in the skeleton cavity;

[0018] A side stop block is installed on the side penetrating rod, and a middle stop block is installed on the middle penetrating rod; the side stop block and the middle stop block are used to abut against both ends of the metal skeleton, respectively.

[0019] As one optional technical solution in the first aspect, the end faces of the side blocks and the middle blocks near the metal frame are roughly circular, and the diameter of the circular surface is denoted as R; the through holes provided in the metal frame are distributed in a ring along the end face of the metal frame, and the distance between two radially symmetrical through holes is L; where R < L.

[0020] Optionally, the side stop block is fixedly connected to the side through rod; the middle stop block is movably connected to the middle through rod.

[0021] Furthermore, the middle block includes a connecting portion and end faces located at both ends of the connecting portion; the cross-section passing through the axis of the middle block is approximately "I" shaped;

[0022] The through rod is provided with a first slot for the connecting part to pass through, and the connecting part and the first slot are in clearance fit.

[0023] As an optional technical solution in the first aspect, one end of the frame support rod is fixedly connected to the side through rod, and the other end is movably connected to the central through rod.

[0024] Optionally, the through rod is provided with a second slot for inserting the end of the skeleton support rod; the length of the end of the skeleton support rod inserted into the second slot is not less than 10mm.

[0025] As an optional technical solution in the first aspect, the middle mold and / or the lower mold are provided with inserts; the side through rod is provided with a side through rod insert hole for the insert to pass through; the middle through rod is provided with a middle through rod insert hole for the insert to pass through; the inserts are used to prevent the side through rod and the middle through rod from floating.

[0026] Optionally, the side-through rod is fixedly connected to the lower mold.

[0027] As an optional technical solution in the first aspect, it also includes a rod positioning mechanism, which is used to position the installation positions of the side rod and the middle rod.

[0028] The rod positioning mechanism includes multiple rod positioning pins fixedly connected to the lower mold; the side rods are provided with side rod positioning pin holes for inserting rod positioning pins; the middle rods are provided with middle rod positioning pin holes for inserting rod positioning pins.

[0029] As an optional technical solution in the first aspect, it also includes a module positioning mechanism, which is used to position the installation positions of the middle mold, the upper mold and the lower mold;

[0030] The module positioning mechanism includes multiple module positioning pins fixedly connected to the lower mold; the middle mold is provided with a middle mold positioning pin hole for the module positioning pins to pass through; and the upper mold is provided with an upper mold positioning pin hole for the module positioning pins to be inserted into.

[0031] Compared with the prior art, the technical solution provided by this utility model has the following advantages:

[0032] The utility model discloses a skeleton support rod is set up, one can support the metal skeleton on one hand, make metal skeleton be in the state of suspension in skeleton cavity, and the rubber is convenient to adhere. On the other hand, the side stopper and the middle stopper of cooperation setting support the metal skeleton, guarantee the flatness of metal skeleton after rubber coating is less than 0.5mm, make the flatness of product meet the requirement, improve product quality. In addition, because setting side wear pole and middle wear pole, when stripping, can lift each wear pole together to take out multiple products from the cavity simultaneously, improve efficiency. In addition, through installing the plug, can avoid the side wear pole and middle wear pole floating, thereby help to improve product quality. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 It is schematic view of rubber flexible joint;

[0034] Figure 2 It is schematic view of through hole of rubber flexible joint;

[0035] Figure 3 It is schematic view when installing plug in one embodiment of the application;

[0036] Figure 4 It is sectional view of mold in one embodiment of the application;

[0037] Figure 5 It is schematic view when installing side stopper and middle stopper in one embodiment of the application;

[0038] Figure 6 It is sectional view of lower mold in one embodiment of the application;

[0039] Figure 7 It is top view of middle mold in one embodiment of the application;

[0040] Figure 8 It is sectional view of middle mold in one embodiment of the application;

[0041] Figure 9 It is schematic view when installing skeleton support rod in one embodiment of the application;

[0042] Figure 10 It is schematic view when installing side stopper in side wear pole in one embodiment of the application;

[0043] Figure 11 It is schematic view of middle wear pole in one embodiment of the application.

[0044] Explanation of reference numerals in schematic view:

[0045] Rubber flexible joint 101, through hole 102;

[0046] Upper mold 201;

[0047] Middle mold 301, glue injection hole 302, middle mold positioning pin hole 303, middle mold cavity 304, middle mold rod passing groove 305;

[0048] Lower mold 401, mold positioning pin 402, rod passing positioning pin 404, lower mold cavity 405, lower mold rod passing groove 406;

[0049] Side rod 501, framework support rod 502, screw 503, side rod insertion strip hole 504, side rod positioning pin hole 505, framework support rod mounting hole 506;

[0050] Middle rod 601, middle rod positioning pin hole 602, middle rod insertion strip hole 603, first clamping groove 604, second clamping groove 605;

[0051] Insertion strip 701, side stop block 702, middle stop block 703. DETAILED DESCRIPTION

[0052] In order to further understand the content of the present application, the present application will be described in detail in conjunction with the drawings and examples.

[0053] The structure, proportion, size, etc. shown in the drawings of the present specification are only used to cooperate with the content disclosed in the specification, to be understood and read by those skilled in the art, and do not define the limiting conditions that can be implemented by the present application, so they do not have substantial technical significance. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects and purposes that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application. At the same time, the terms such as "upper", "lower", "left", "right", "middle" and the like in the present specification are only for the convenience of clear description, and are not used to limit the scope of implementation. The change or adjustment of the relative relationship, without substantially changing the technical content, is also considered as the scope of implementation of the present application.

[0054] The structure of the rubber flexible joint 101 is shown in Figures 1-2 The material of the metal framework can be 304 stainless steel. The rubber flexible joint 101 is provided with a plurality of through holes 102 arranged in a ring shape at both ends, and the through holes 102 at both ends are one-to-one corresponding in the axial direction.

[0055] In one embodiment, as Figures 3-11As shown, the present application proposes a rubber flexible joint vulcanization forming mold for marine use, which comprises a lower mold 401, a middle mold 301 and an upper mold 201 stacked in sequence. The lower mold 401 is provided with a lower mold cavity 405, and the middle mold 301 is provided with a middle mold cavity 304 matched with the lower mold cavity 405. The lower mold cavity 405 and the middle mold cavity 304 form a skeleton cavity. One metal skeleton can be filled in each skeleton cavity. In order to improve production efficiency, a set of molds can be provided with multiple pairs of lower mold cavities 405 and middle mold cavities 304, that is, multiple skeleton cavities, so that multiple rubber flexible joints 101 can be produced simultaneously by a set of molds. In the embodiment, as shown in Figure 3 A set of molds is provided with six skeleton cavities.

[0056] As shown in Figure 3 、 4 , 7, the middle mold 301 is provided with a glue injection port 302, which is in communication with the skeleton cavity. The upper surface of the middle mold 301 is also provided with a glue blank groove for storing glue. When the upper mold 201 is closed, the glue enters the skeleton cavity through the glue injection port 302 under the extrusion of the upper mold 201. The glue entering the skeleton cavity can be wrapped around the metal skeleton to form a rubber flexible joint 101.

[0057] A middle penetrating rod 601 and a pair of side penetrating rods 501 are installed between the middle mold 301 and the lower mold 401. The pair of side penetrating rods 501 are symmetrically arranged on both sides of the middle penetrating rod 601. The skeleton cavity is arranged between the side penetrating rod 501 and the middle penetrating rod 601. In order to facilitate the installation of the side penetrating rod 501 and the middle penetrating rod 601, and to avoid the difficulty of tightly closing the middle mold 301 and the lower mold 401 after the installation of the side penetrating rod 501 and the middle penetrating rod 601, a middle mold penetrating rod groove 305 is arranged on the middle mold 301, and a lower mold penetrating rod groove 406 is arranged on the lower mold 401. The middle mold penetrating rod groove 305 corresponds to the lower mold penetrating rod groove 406, and the two form a penetrating rod groove, so that the side penetrating rod 501 and the middle penetrating rod 601 can be inserted.

[0058] A skeleton supporting rod 502 is installed between the side penetrating rod 501 and the middle penetrating rod 601. The arrangement interval and position of the skeleton supporting rod 502 correspond to the through hole 102 provided on the metal skeleton. When the metal skeleton is filled into the skeleton cavity, the skeleton supporting rod 502 needs to pass through the through hole 102 provided on the metal skeleton, and the two are in clearance fit, for example, 0.05 mm. Under the support of the skeleton supporting rod 502, the metal skeleton is in a suspended state in the skeleton cavity. When the glue flows into the skeleton cavity, the glue can adhere to the surface of the metal skeleton.

[0059] A side stop 702 is installed on the side through rod 501, and a middle stop 703 is installed on the middle through rod 601. The metal frame is filled into the frame cavity, and after the frame support rod 502 passes through the through hole 102 provided in the metal frame, the side stop 702 and the middle stop 703 respectively abut against the two ends of the metal frame, thereby ensuring flatness and making the final flatness of the product meet the requirements.

[0060] In one optional embodiment, the end faces of the side blocks 702 and the middle blocks 703 near the metal frame are approximately circular, with the diameter of the circular face denoted as R. The through holes 102 provided in the metal frame are distributed in a ring along the end face of the metal frame, and the distance between two radially symmetrical through holes 102 is L. Where R < L, for example, R is 0.15 mm smaller than L, which ensures the supporting force of the blocks and guarantees that the flatness of the metal frame after coating is less than 0.5 mm.

[0061] Regarding the installation method of the side stop 702 and the middle stop 703, in one embodiment, the side stop 702 is fixedly connected to the side through rod 501, for example, firmly embedded in the side through rod 501. The middle stop 703 is movably connected to the middle through rod 601. In this case, the middle stop 703 is easy to disassemble. When inserting the metal frame, the frame support rod 502 can be allowed to pass through the through hole 102 provided in the metal frame, then the side stop 702 can be allowed to abut against one end face of the metal frame, and finally the middle stop 703 can be installed to abut against the other end face of the metal frame.

[0062] Optionally, the middle stop block 703 includes a connecting part and end faces located at both ends of the connecting part. Thus, the cross-section passing through the axis of the middle stop block 703 is approximately "I"-shaped. The through rod 601 is provided with a first slot 604 to allow the connecting part to pass through. The connecting part and the first slot 604 are in clearance fit, for example, 0.25mm, which facilitates the assembly and disassembly of the middle stop block 703.

[0063] Regarding the installation method of the skeleton support rod 502, in one optional implementation, one end of the skeleton support rod 502 is fixedly connected to the side through rod 501. For example, the side through rod 501 has a skeleton support rod mounting hole 506, and one end of the skeleton support rod 502 is inserted into the skeleton support rod mounting hole 506 and fixed by means of glue or welding. The other end of the skeleton support rod 502 is movably connected to the central through rod 601. At this time, during demolding, the side through rod 501 and the central through rod 601 can be lifted together, thereby removing all the products from the cavity. Then, only the central through rod 601 needs to be removed to remove all the products from the skeleton support rod 502.

[0064] The central through rod 601 is provided with a second slot 605 for inserting the end of the skeleton support rod 502. The length of the end of the skeleton support rod 502 inserted into the second slot 605 is not less than 10mm. This ensures that the skeleton support rod 502 can stably support the metal skeleton and also prevents the mold from being deformed during glue injection.

[0065] In order to avoid the movement of the side penetrating rod 501 and the middle penetrating rod 601 from affecting the precision of the product during glue injection, the insert 701 is inserted into the middle mold 301 and / or the lower mold 401. The side penetrating rod 501 is provided with a side penetrating rod insert hole 504 through which the insert 701 is inserted, and the middle penetrating rod 601 is provided with a middle penetrating rod insert hole 603 through which the insert 701 is inserted. When the insert 701 is inserted into the middle mold 301 and / or the lower mold 401, the insert 701 also passes through the side penetrating rod insert hole 504 and the middle penetrating rod insert hole 603, and at this time, the side penetrating rod 501 and the middle penetrating rod 601 can be prevented from floating up under the restriction of the insert 701.

[0066] In addition, in order to further avoid the movement of the side penetrating rod 501, the side penetrating rod 501 can be fixedly connected with the lower mold 401, for example, the side penetrating rod 501 is fixedly connected with the lower mold 401 through the screw 503. During mold stripping, the screw 503 is removed, and the side penetrating rod 501 and the middle penetrating rod 601 can be lifted together.

[0067] In an alternative embodiment, the mold further comprises a penetrating rod positioning mechanism, and the mounting positions of the side penetrating rod 501 and the middle penetrating rod 601 can be positioned through the penetrating rod positioning mechanism, so as to further improve the flatness of the product. The penetrating rod positioning mechanism comprises a plurality of penetrating rod positioning pins 404 fixedly connected with the lower mold 401. The side penetrating rod 501 is provided with a side penetrating rod positioning pin hole 505 through which the penetrating rod positioning pin 404 is inserted, and the middle penetrating rod 601 is provided with a middle penetrating rod positioning pin hole 602 through which the penetrating rod positioning pin 404 is inserted.

[0068] The mold further comprises a mold positioning mechanism, and the mounting positions of the middle mold 301, the upper mold 201 and the lower mold 401 can be positioned through the mold positioning mechanism. Specifically, the mold positioning mechanism comprises a plurality of mold positioning pins 402 fixedly connected with the lower mold 401. The middle mold 301 is provided with a middle mold positioning pin hole 303 through which the mold positioning pin 402 is inserted, and the upper mold 201 is provided with an upper mold positioning pin hole through which the mold positioning pin 402 is inserted.

[0069] The above description of the utility model and its embodiments is illustrative and non-restrictive, and the embodiments shown in the drawings are only one of the embodiments of the utility model, and the actual structure is not limited thereto. Therefore, if a person skilled in the art is inspired by the above description, without departing from the creative purpose of the utility model, similar structural modes and embodiments can be designed without creativity, which should all belong to the protection scope of the utility model.

Claims

1. A vulcanization molding die for a marine rubber flexible joint, comprising a lower die (401), a middle die (301), and an upper die (201) stacked sequentially; the lower die (401) is provided with a lower mold cavity (405), and the middle die (301) is provided with a middle mold cavity (304) adapted to the lower mold cavity (405); the lower mold cavity (405) and the middle mold cavity (304) form a skeleton cavity; the middle die (301) is also provided with an injection port (302) communicating with the skeleton cavity; Its features are: In A central through rod (601) and a pair of side through rods (501) are installed between the mold (301) and the lower mold (401). The pair of side through rods (501) are symmetrically arranged on both sides of the central through rod (601). The skeleton cavity is located between the side through rods (501) and the central through rod (601). A skeleton support rod (502) is installed between the side through rod (501) and the middle through rod (601). This skeleton support rod (502) is used to pass through the through hole (102) provided in the metal skeleton, so that the metal skeleton is suspended in the skeleton cavity. A side stop (702) is installed on the side rod (501), and a middle stop (703) is installed on the middle rod (601); the side stop (702) and the middle stop (703) are used to abut against the two ends of the metal frame, respectively.

2. The vulcanization molding die for marine rubber flexible joints according to claim 1, characterized in that: The end faces of the side blocks (702) and the middle blocks (703) near the metal frame are roughly circular, and the diameter of the circular face is denoted as R. The through holes (102) provided in the metal frame are distributed in a ring along the end face of the metal frame, and the distance between two radially symmetrical through holes (102) is L; Where R < L.

3. The vulcanization molding die for marine rubber flexible joints according to claim 2, characterized in that: The side stop (702) is fixedly connected to the side through rod (501); the middle stop (703) is movably connected to the middle through rod (601).

4. The vulcanization molding die for marine rubber flexible joints according to claim 3, characterized in that: The middle block (703) includes a connecting part and end faces located at both ends of the connecting part; the cross-section passing through the axis of the middle block (703) is approximately "I" shaped; The through rod (601) is provided with a first slot (604) for the connecting part to pass through, and the connecting part and the first slot (604) are in clearance fit.

5. The vulcanization molding die for a marine rubber flexible joint according to claim 1, characterized in that: One end of the frame support rod (502) is fixedly connected to the side through rod (501), and the other end is movably connected to the central through rod (601).

6. The vulcanization molding die for a marine rubber flexible joint according to claim 5, characterized in that: The central through rod (601) is provided with a second slot (605) for inserting the end of the skeleton support rod (502); The length of the end of the frame strut (502) inserted into the second slot (605) is not less than 10mm.

7. The vulcanization molding die for a marine rubber flexible joint according to claim 1, characterized in that: The middle die (301) and / or the lower die (401) is inserted with an insert bar (701); The side penetrating rod (501) is provided with a side penetrating rod insert bar hole (504) for the insert bar (701) to pass through; The middle penetrating rod (601) is provided with a middle penetrating rod insert bar hole (603) for the insert bar (701) to pass through; The insert bar (701) is used to prevent the side penetrating rod (501) and the middle penetrating rod (601) from floating up.

8. The rubber flexible joint vulcanization forming mold for marine use according to claim 1, characterized in that: The side penetrating rod (501) is fixedly connected with the lower die (401).

9. The rubber flexible joint vulcanization forming mold for marine use according to any one of claims 1-8, characterized in that: It further comprises a penetrating rod positioning mechanism, which is used to position the installation position of the side penetrating rod (501) and the middle penetrating rod (601); The penetrating rod positioning mechanism comprises a plurality of penetrating rod positioning pins (404) fixedly connected with the lower die (401); the side penetrating rod (501) is provided with a side penetrating rod positioning pin hole (505) for the penetrating rod positioning pin (404) to insert; the middle penetrating rod (601) is provided with a middle penetrating rod positioning pin hole (602) for the penetrating rod positioning pin (404) to insert.

10. The rubber flexible joint vulcanization forming mold for marine use according to any one of claims 1-8, characterized in that: It further comprises a module positioning mechanism, which is used to position the installation position of the middle die (301), the upper die (201) and the lower die (401); The module positioning mechanism comprises a plurality of module positioning pins (402) fixedly connected with the lower die (401); the middle die (301) is provided with a middle die positioning pin hole (303) for the module positioning pin (402) to pass through; the upper die (201) is provided with an upper die positioning pin hole for the module positioning pin (402) to insert.

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