Air inlet pipe rubber joint machining die and method

Abstract

The invention discloses an air inlet pipe rubber joint processing die and method.The die comprises an upper die, a lower die, a die core and a framework, the upper die, the lower die and the die core jointly form a cavity for containing rubber, the framework is arranged in the cavity, a positioning hole is formed in the lower die, a positioning protrusion matched with the positioning hole is arranged on the die core, and the positioning protrusion is arranged on the framework. The mold core and the cavity are coaxially arranged through the positioning bulge; the mold further comprises an injection-compression cylinder and a cylinder cover, the injection-compression cylinder is arranged on the upper mold, and the injection-compression cylinder is provided with a containing cavity for containing glue and a glue injection opening for injecting glue into the cavity; the cylinder cover is arranged on the injection molding cylinder and provided with an abutting part matched with the containing cavity, and the cylinder cover is driven by external force to move towards the injection molding cylinder so as to extrude the glue in the containing cavity into the cavity through the glue injection opening; material returning grooves are formed in one end, close to the cavity, of the joint of the lower mold and the upper mold, the joint of the upper mold and the injection-molding cylinder and the joint of the mold core and the injection-molding cylinder. The problems that in the traditional technology, flashes are likely to be generated, and a plastic framework is likely to deform are effectively solved.

Description

Technical Field

[0001] The invention relates to the technical field of rubber processing, and in particular to a processing mould and method for an intake pipe rubber joint. Background Art

[0002] With the development of rubber vulcanization and molding technology, the vulcanization molding technology of rubber products with internal skeletons has emerged. The characteristic of this technology is that the skeleton and rubber are integrated through the vulcanization process. The products have high bonding strength and stability and are widely used in rubber components that require high durability, high sealing and complex shapes.

[0003] Patent document with publication number CN102962931A discloses a production method of a rubber clamp with an inner skeleton and a rubber vulcanization mold. The method is that after the rubber vulcanization mold is heated to a certain temperature, a metal skeleton coated with an adhesive in the rubber vulcanization section is placed in the positioning groove of the lower template of the rubber vulcanization mold, and the holes on the metal skeleton and the positioning holes of the lower template are accurately positioned by positioning pins, and then the upper template is covered, and an appropriate amount of rubber is added to the feeding cavity, and the injection plug is pressed in and vulcanized. In this way, the rubber enters the mold cavity through the main flow guide and is wrapped around the metal skeleton to form a rubber sleeve product, so that the metal skeleton and the rubber sleeve are vulcanized into one by the rubber mold.

[0004] However, the technical solution provided by the invention, when the rubber is squeezed into the mold, there is a lack of space to accommodate the overflow of the rubber, resulting in the rubber directly overflowing onto the mold joint and the surface of the frame. The randomness of this overflow of glue increases the generation of flash and may further affect the surface quality and dimensional accuracy of the product. In addition, the mold structure used in the invention is mainly for the molding of metal frames, and its high temperature and high pressure molding conditions are not applicable to plastic frames. Since the mechanical properties of plastic frames are weak in high temperature environments, they are prone to deformation or even damage during the stress process, resulting in unqualified product quality. Summary of the invention

[0005] Based on this, it is necessary to provide a mold and method for processing the rubber joint of the intake pipe to address the above-mentioned problems of easy flash and easy deformation of the plastic frame.

[0006] The present application provides an intake pipe rubber joint processing mold, comprising an upper mold, a lower mold, a mold core and a skeleton, wherein the upper mold, the lower mold and the mold core together form a mold cavity for accommodating rubber material, and the skeleton is arranged in the mold cavity.

[0007] The lower mold is provided with a positioning hole, the mold core is provided with a positioning protrusion adapted to the positioning hole, and the mold core is coaxially arranged with the cavity through the positioning protrusion;

[0008] The rubber vulcanization mold further comprises an injection cylinder and a cylinder cover, wherein the injection cylinder is arranged on the upper mold, and the injection cylinder has a receiving cavity for receiving the rubber material and a glue injection port for injecting the glue into the mold cavity;

[0009] The cylinder cover is arranged on the injection cylinder, and the cylinder cover has an abutment portion adapted to the accommodating cavity. Under the driving force of an external force, the cylinder cover moves toward the injection cylinder until the abutment portion abuts against the bottom of the accommodating cavity, so as to squeeze the rubber material in the accommodating cavity into the mold cavity through the injection port;

[0010] A material withdrawal groove is provided at one end of the connection between the lower mold and the upper mold close to the cavity, at one end of the connection between the upper mold and the injection cylinder close to the cavity, and at one end of the connection between the mold core and the injection cylinder close to the cavity. The material withdrawal groove is used to accommodate the extruded rubber material.

[0011] Optionally, a positioning groove is provided on the lower mold, and the positioning groove is adapted to the outer ring of the top cover and the upper edge protrusion of the top cover of the skeleton. After the skeleton is loaded into the cavity, the lower edge of the top cover of the skeleton abuts against the upper mold and is fixedly connected to the cavity under the abutment of the upper mold.

[0012] Optionally, a plurality of edge banding ribs are provided on the circumferential side surface of the mold core.

[0013] Optionally, a plurality of guide posts are provided on the top surface of the lower mold, and the upper mold is provided with guide holes adapted to the guide posts, and the height of the guide posts is adapted to the thickness of the upper mold.

[0014] Optionally, films are attached to the inner and outer sides of the legs of the frame, and the films are made of the same material as the rubber material.

[0015] The present application also provides a method for processing an intake pipe rubber joint, using the above-mentioned intake pipe rubber joint processing mold, and further comprising the following steps:

[0016] Mold installation: assemble the lower mold and the upper mold to form a mold assembly, and install the mold assembly on a flat vulcanizer;

[0017] Mold preheating: heating the mold assembly to a set temperature and keeping it warm;

[0018] Frame pretreatment: attach a film of preset thickness to the inner and outer sides of the frame legs;

[0019] Frame installation: put the frame into the cavity and fix it, and install the mold core;

[0020] Glue injection and pressurization: add glue into the injection cylinder, pressurize it to a preset pressure, close the mold and lock the mold assembly, and inject the glue into the cavity from the glue injection port according to the preset injection pressure and combine with the frame;

[0021] Vulcanization molding: Keep the lock in place for a preset time until the rubber material is vulcanized to form a rubber product;

[0022] Demolding: Open the mold, take out the mold core and the rubber product together, and then remove the rubber product from the mold core.

[0023] Optionally, after the demoulding step, the method further comprises:

[0024] Trimming: Peel off the flash formed by the rubber being squeezed into the return chute.

[0025] Optionally, when the preset thickness of the film attached to the inner and outer sides of the skeleton legs is 1-2 mm, the set temperature is 170±5° C., the preset pressure is 10 MPa, the preset injection pressure is 5 MPa, and the preset time is 8 minutes.

[0026] Optionally, when the preset thickness of the film attached to the inner and outer sides of the skeleton support legs is 0.3 mm, the set temperature is 165±5° C., the preset pressure is 15 MPa, the preset injection pressure is 10 MPa, and the preset time is 10 minutes.

[0027] Optionally, in the skeleton preprocessing step, it also includes:

[0028] The film pre-formed according to the preset thickness is cut into a size of 200*20mm, and the cut film is attached to the inner and outer sides of the skeleton legs, and the film and the rubber are made of the same material.

[0029] Compared with the prior art, the technical solution provided by this application has the following beneficial effects:

[0030] The above-mentioned intake pipe rubber joint processing mold, by setting a positioning hole on the lower mold and a positioning protrusion matched with the positioning hole on the mold core, enables the mold core to be coaxially arranged with the cavity. The precision of mold matching ensures the uniformity of the distribution of the rubber material, effectively reduces the flash caused by eccentric force, and provides stable support for the plastic skeleton. In order to further optimize the injection process of the rubber material, the mold also includes an injection cylinder and a cylinder head. The injection cylinder is arranged on the upper mold, and has a accommodating cavity for accommodating the rubber material and an injection port for injecting the rubber into the cavity. The cylinder head is driven by an external force to move toward the bottom of the injection cylinder, and the rubber material is evenly and stably squeezed into the cavity, avoiding deformation of the plastic skeleton due to excessive injection impact force, which is particularly suitable for thinner plastic skeleton parts. The stable injection process can also ensure that the rubber material is fully filled in the cavity, thereby improving the quality of the product.

[0031] At the key joint of the mold, a material return groove is designed to accommodate the excess rubber extruded. The material return grooves are respectively set at the connection between the lower mold and the upper mold, the connection between the upper mold and the injection cylinder, and the connection between the mold core and the injection cylinder. This design controls the flow direction and distribution of the excess rubber, making the connection between the flash near the groove edge and the processed product extremely thin, much thinner than the thickness of the excess rubber in the groove, thus forming a natural weak point. The flash can be easily broken during peeling, which not only reduces the difficulty of trimming, but also avoids damage to the surface of the finished product. This design can also effectively prevent the flash from spreading into the cavity, further ensuring the surface quality and dimensional accuracy of the finished product. The weak design of the flash reduces the difficulty of trimming and processing time, and improves production efficiency.

[0032] The above-mentioned intake pipe rubber joint processing method, by attaching a film of the same material as the rubber material on the inner and outer sides of the frame support legs, not only enhances the strength of the frame, but also reduces the direct impact of high temperature and high pressure injection on the frame, making the frame more stable during the processing process, and is suitable for frames of different specifications and materials. At the same time, a material return groove is added to the mold design, providing a space for accommodating excess rubber, so that the formation of flash is effectively controlled, the trimming process is simple and efficient, and the processing efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 A schematic cross-sectional view of a mold for processing an intake pipe rubber joint provided in one embodiment of the present application;

[0034] Figure 2 A schematic cross-sectional view of a mold for processing an intake pipe rubber joint provided in an embodiment of the present application without a frame;

[0035] Figure 3 for Figure 2 Schematic diagram of the local cross-section structure of the middle B area;

[0036] Figure 4 A schematic diagram of the skeleton structure of an intake pipe rubber joint processing mold provided in one embodiment of the present application;

[0037] Figure 5 A schematic diagram of the skeleton cross-sectional structure of an intake pipe rubber joint processing mold provided in one embodiment of the present application;

[0038] Figure 6 A schematic diagram of a film attached to the frame of an intake pipe rubber joint processing mold provided in one embodiment of the present application.

[0039] Description of reference numerals:

[0040] 1-upper mold; 2-lower mold; 21-positioning hole; 22-positioning groove; 3-mold core; 31-positioning protrusion; 32-edge banding rib; 4-skeleton; 41-top cover upper edge protrusion; 42-top cover lower edge; 5-mold cavity; 6-injection cylinder; 61-glue injection port; 7-cylinder cover; 71-butt portion; 8-return groove; 9-film. DETAILED DESCRIPTION

[0041] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships 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 referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0043] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0044] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0046] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0047] See also Figures 1 to 3 An embodiment of the present invention provides a processing mold for an intake pipe rubber joint, comprising an upper mold 1, a lower mold 2, a mold core 3 and a skeleton 4. The upper mold 1, the lower mold 2 and the mold core 3 together form a mold cavity 5 for accommodating a rubber material, and the skeleton 4 is arranged in the mold cavity 5.

[0048] The lower mold 2 is provided with a positioning hole 21, and the mold core 3 is provided with a positioning protrusion 31 adapted to the positioning hole 21. The mold core 3 is coaxially arranged with the cavity 5 through the positioning protrusion 31;

[0049] The rubber vulcanization mold further includes an injection cylinder 6 and a cylinder cover 7. The injection cylinder 6 is disposed on the upper mold 1. The injection cylinder 6 has a receiving cavity for receiving the rubber material and a glue injection port 61 for injecting glue into the mold cavity 5.

[0050] The cylinder cover 7 is arranged on the injection cylinder 6, and has an abutment portion 71 adapted to the accommodating cavity. Under the driving force of an external force, the cylinder cover 7 moves toward the injection cylinder 6 until the abutment portion 71 abuts against the bottom of the accommodating cavity, so as to squeeze the rubber in the accommodating cavity into the mold cavity 5 through the injection port 61;

[0051] A material return groove 8 is provided at one end of the connection between the lower mold 2 and the upper mold 1 close to the mold cavity 5, at one end of the connection between the upper mold 1 and the injection cylinder 6 close to the mold cavity 5, and at one end of the connection between the mold core 3 and the injection cylinder 6 close to the mold cavity 5. The material return groove 8 is used to accommodate the extruded rubber material.

[0052] The mold for processing the intake pipe rubber joint provided in this embodiment is provided with a positioning hole 21 on the lower mold 2, and a positioning protrusion 31 adapted to the positioning hole 21 is provided on the mold core 3, so that the mold core 3 can be coaxially arranged with the cavity 5. The precision of the mold matching ensures the uniformity of the distribution of the rubber material, effectively reduces the flash caused by eccentric force, and provides stable support for the plastic skeleton 4. In order to further optimize the injection process of the rubber material, the mold also includes an injection cylinder 6 and a cylinder head 7. The injection cylinder 6 is arranged on the upper mold 1, and has a accommodating cavity for accommodating the rubber material and a glue injection port 61 for injecting glue into the cavity 5. The cylinder head 7 is driven by an external force to move toward the bottom of the injection cylinder 6, and the rubber material is evenly and stably squeezed into the cavity 5, avoiding deformation of the plastic skeleton 4 due to excessive injection impact force, which is particularly suitable for thinner plastic skeletons 4. The stable glue injection process can also ensure that the rubber material is fully filled in the cavity 5, thereby improving the quality of the product.

[0053] At the key joint part of the mold, a material withdrawal groove 8 is designed to accommodate the excess rubber material extruded. The material withdrawal groove 8 is respectively arranged at the connection between the lower mold 2 and the upper mold 1, the connection between the upper mold 1 and the injection cylinder 6, and the connection between the mold core 3 and the injection cylinder 6. This design controls the flow direction and distribution of the excess rubber material, so that the connection between the flash near the groove edge and the processed product becomes extremely thin, which is much smaller than the thickness of the excess rubber material in the groove, thereby forming a natural weak point. The flash can be easily broken during peeling, which not only reduces the difficulty of trimming, but also avoids damage to the surface of the finished product. This design can also effectively prevent the flash from spreading into the cavity 5, further ensuring the surface quality and dimensional accuracy of the finished product. The weak design of the flash reduces the difficulty of trimming and processing time, and improves production efficiency.

[0054] See also Figure 3 , Figure 5 and Figure 6 The intake pipe rubber joint processing mold provided in this embodiment has a positioning groove 22 on the lower mold 2, and the positioning groove 22 is adapted to the outer ring of the top cover of the skeleton 4 and the top cover upper edge protrusion 41. After the skeleton 4 is loaded into the cavity 5, the top cover lower edge 42 of the skeleton 4 abuts against the upper mold 1, and is fixedly connected to the cavity 5 under the abutment of the upper mold 1.

[0055] The intake pipe rubber joint processing mold provided in this embodiment, by setting a positioning groove 22 on the lower mold 2, enables the skeleton 4 to be accurately positioned and stably assembled in the cavity 5. The structural design of the positioning groove 22 is compatible with the outer ring and the protrusion of the upper edge of the top cover of the skeleton 4, ensuring that the skeleton 4 can be quickly and accurately embedded in the mold, thereby avoiding the problem of deviation or loosening of the skeleton 4 during the assembly process. After the skeleton 4 is loaded into the cavity 5, the lower edge of its top cover is tightly abutted against the bottom surface of the upper mold 1. This design firmly fixes the skeleton 4 in the cavity 5 through the pressing effect of the upper mold 1 on the skeleton 4. This fixing method not only ensures that the skeleton 4 remains stable during the vulcanization molding process, but also effectively prevents the skeleton 4 from being offset or deformed due to the high temperature and high pressure environment, further ensuring the quality and consistency of the processed products.

[0056] See also Figure 3 In the intake pipe rubber joint processing mold provided in this embodiment, a plurality of edge-sealing ribs 32 are provided on the circumferential side of the mold core 3. By providing a plurality of edge-sealing ribs 32 on the circumferential side of the mold core 3, the rubber material can be evenly filled around the mold core 3 during processing, thereby forming a convex structure that matches the edge-sealing ribs 32 on the inner side of the product. On the one hand, the inner convexity can enhance the sealing performance between the rubber joint and the connector, and by increasing the contact area and local compressibility, the joint is more firm and reliable during assembly and use; on the other hand, this convex design can enhance the durability and deformation resistance of the product, and significantly reduce the risk of loosening or deformation of the joint when facing complex working conditions (such as high temperature, high pressure or frequent vibration).

[0057] In the processing mold for the intake pipe rubber joint provided in this embodiment, a plurality of guide posts are arranged on the top surface of the lower mold 2, and a guide hole adapted to the guide post is arranged on the upper mold 1, and the height of the guide post is adapted to the thickness of the upper mold 1. By arranging a plurality of guide posts on the top surface of the lower mold 2 and designing a guide hole adapted to the guide post in the upper mold 1, accurate guidance and positioning of the mold during assembly and processing are achieved. The height of the guide post is adapted to the thickness of the upper mold 1, and this design structurally ensures accurate alignment when the mold is closed. The cooperation between the guide post and the guide hole provides a precise guiding function for mold assembly, effectively avoiding the misalignment problem that may occur between the upper mold 1 and the lower mold 2 during assembly. If this misalignment problem is not avoided, it may cause the cavity 5 to be irregular or the sealing performance to be insufficient, thereby affecting the quality of the processed product. Through the action of the guide post and the guide hole, the upper and lower molds 2 can maintain a stable and accurate docking, thereby ensuring the integrity of the shape of the cavity 5 and the uniformity of the rubber filling.

[0058] See also Figure 6In the intake manifold rubber joint processing mold provided in this embodiment, films 9 are pasted on the inner and outer sides of the legs of the skeleton 4, and the films 9 are made of the same material as the rubber. Pasting the films 9 firstly improves the strength of the legs of the skeleton 4. The legs are the key part of the structure of the skeleton 4 that bears pressure and supports the shape of the product. Under high temperature and high pressure environment, the weak areas of the skeleton 4 are easily deformed or damaged due to concentrated force. By pasting the films 9 on the surface of the legs, the overall strength and durability of the skeleton 4 can be improved.

[0059] In addition, the film 9 also effectively mitigates the direct impact of the high-temperature and high-pressure rubber on the frame 4. During the processing, the injected rubber will apply instantaneous high pressure to the surface of the frame 4, which is particularly disadvantageous for the thinner plastic frame 4. After the film 9 is pasted, the rubber first merges with the film 9 on the surface of the frame 4 to form a buffer layer, thereby reducing the direct force of the rubber on the frame 4. This design not only protects the frame 4 and reduces the risk of deformation and damage, but also ensures the uniform distribution of the rubber in the cavity 5, thereby improving the quality of the processed product.

[0060] An embodiment of the present invention further provides a method for processing an intake pipe rubber joint, using the above-mentioned intake pipe rubber joint processing mold, and further comprising the following steps:

[0061] Mold installation: Assemble the lower mold 2 and the upper mold 1 to form a mold assembly, and install the mold assembly on a flat vulcanizer;

[0062] The installation of the mold assembly ensures the precise positioning of the mold, and its matching with the vulcanizer provides a stable processing basis for subsequent heating, pressurizing, glue injection and other steps.

[0063] Mold preheating: Heat the mold assembly to the set temperature and keep it warm;

[0064] Preheating the mold helps to improve the vulcanization efficiency, so that the rubber material can quickly heat up and flow evenly after being injected into the cavity 5, while avoiding the internal stress problem of the finished product caused by the temperature difference of the mold.

[0065] Frame pretreatment: attaching a film 9 of a preset thickness to the inner and outer sides of the four legs of the frame;

[0066] The skeleton pretreatment helps to enhance the strength of the skeleton's 4 legs and avoid deformation under high temperature and high pressure conditions, while providing a buffering effect to reduce the direct impact of high-pressure glue injection on the skeleton 4.

[0067] Frame installation: put the frame 4 into the cavity 5 and fix it, and install the mold core 3;

[0068] The precise positioning and fixation of the skeleton 4 in the cavity 5 ensures the position stability during the processing. The installation of the mold core 3 further defines the structural shape of the cavity 5 to ensure that the product meets the design requirements.

[0069] Glue injection and pressurization: add glue into the injection cylinder 6, pressurize to a preset pressure, close the mold and lock the mold assembly, and inject the glue into the cavity 5 from the glue injection port 61 according to the preset injection pressure and combine with the frame 4;

[0070] Precise injection pressure and flow control make the rubber material evenly distributed and fully fill the cavity 5. The combination of the rubber material and the frame 4 forms a strong adhesion under the action of pressure, thereby improving the structural strength and sealing performance of the product.

[0071] Vulcanization molding: Keep the lock in place for a preset time until the rubber material is vulcanized to form a rubber product;

[0072] Maintaining constant high temperature and high pressure within the set time allows the molecular structure of the rubber to undergo chemical cross-linking reactions, ultimately forming high-strength rubber products. The sealing of the mold ensures the accuracy and consistency of the product shape during the vulcanization process.

[0073] Demolding: Open the mold, take out the mold core 3 and the rubber product together, and then remove the rubber product from the mold core 3.

[0074] The design of the mold core 3 makes the demoulding process more convenient. After demoulding, the shape of the product is stable and does not require much subsequent adjustment.

[0075] In this embodiment, by attaching a film 9 of the same material as the rubber material to the inner and outer sides of the legs of the frame 4, the strength of the frame 4 is not only enhanced, but also the direct impact of high temperature and high pressure injection on the frame 4 is reduced, making the frame 4 more stable during processing. At the same time, a material return groove 8 is added to the mold design to provide a space for accommodating excess rubber, so that the formation of flash is effectively controlled, the trimming process is simple and efficient, and the product appearance is neater.

[0076] The method for processing the intake pipe rubber joint provided in this embodiment further comprises, after the demoulding step:

[0077] Trimming: Peel off the flash formed by the rubber material being squeezed into the material withdrawal groove 8.

[0078] The introduction of the trimming step complements the design of the material return slot 8 mentioned above. Through the coordinated optimization of mold design and process flow, the flash generation is reduced from the source, and the residual flash is efficiently removed through a convenient peeling process. This method not only ensures processing quality, but also improves production efficiency, and is suitable for the production of large-scale and high-precision intake pipe rubber joints.

[0079] In the method for processing the intake pipe rubber joint provided in this embodiment, when the preset thickness of the film 9 attached to the inner and outer sides of the four legs of the skeleton is 1-2 mm, the set temperature is 170±5°C, the preset pressure is 10MPa, the preset injection pressure is 5MPa, and the preset time is 8 minutes.

[0080] In the method for processing the intake pipe rubber joint provided in this embodiment, when the preset thickness of the film 9 attached to the inner and outer sides of the four legs of the skeleton is 0.3 mm, the set temperature is 165±5°C, the preset pressure is 15 MPa, the preset injection pressure is 10 MPa, and the preset time is 10 minutes.

[0081] The method for processing the intake pipe rubber joint provided in this embodiment can flexibly adjust key parameters such as injection pressure, vulcanization temperature and time according to different thicknesses of the rubber sheet 9, so that the processing technology has high flexibility and is suitable for skeletons 4 of different specifications and materials.

[0082] The method for processing the intake pipe rubber joint provided in this embodiment, in the skeleton pretreatment step, further comprises:

[0083] The film 9 preformed according to the preset thickness is cut into a size of 200*20mm, and the cut film 9 is attached to the inner and outer sides of the four legs of the frame. The film 9 and the rubber material are made of the same material.

[0084] The intake manifold rubber joint processing method provided in this embodiment further improves the processing accuracy and product quality by adding the cutting and attaching process of the film 9 in the skeleton pretreatment step. This newly added step clarifies the size and attachment requirements of the film 9, providing a reliable process guarantee for the subsequent injection and vulcanization process.

[0085] First, in the skeleton preprocessing step, the film 9 preformed according to the preset thickness is cut into a size of 200×20mm. The standardized size design not only ensures that the film 9 can accurately fit the inside and outside of the four legs of the skeleton, but also improves the convenience and consistency of the processing operation. The cut film 9 can cover the key areas of the four legs of the skeleton, avoiding insufficient coverage or excess stacking caused by size mismatch, thereby further improving the standardization of product processing and the consistency of the finished product.

[0086] Next, the cut film 9 is attached to the inner and outer sides of the legs of the frame 4 so that it is in close contact with the surface of the frame 4. The film 9 is made of the same material as the rubber material, and can be fully integrated with the injected rubber material during the vulcanization process to form a strong bond. This design can not only provide a layer of buffer protection for the frame 4, reducing the direct impact of high-temperature and high-pressure injection on the legs, but also make the joint between the rubber material and the frame 4 smooth and without air gaps, thereby improving the bonding strength and sealing performance of the product.

[0087] In addition, the material of the film 9 is consistent with the rubber material, ensuring chemical compatibility and structural integrity during vulcanization. After vulcanization, the film 9 and the rubber material can be completely integrated, making the internal and external structures of the product uniform and without stratification, and the joint parts show higher strength and durability. This design is particularly suitable for thin-walled or low-strength plastic frames 4, significantly enhancing the compression resistance and adaptability of the frame 4.

[0088] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0089] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A mold for processing an intake pipe rubber joint, comprising an upper mold (1), a lower mold (2), a mold core (3) and a frame (4), wherein the upper mold (1), the lower mold (2) and the mold core (3) together form a mold cavity (5) for accommodating a rubber material, and the frame (4) is arranged in the mold cavity (5), characterized in that: The lower mold (2) is provided with a positioning hole (21), the mold core (3) is provided with a positioning protrusion (31) adapted to the positioning hole (21), and the mold core (3) is coaxially arranged with the mold cavity (5) via the positioning protrusion (31); The rubber vulcanization mold further comprises an injection cylinder (6) and a cylinder cover (7); the injection cylinder (6) is arranged on the upper mold (1); the injection cylinder (6) has a receiving cavity for receiving rubber material, and a glue injection port (61) for injecting glue into the mold cavity (5); The cylinder cover (7) is arranged on the injection cylinder (6), and the cylinder cover (7) has an abutment portion (71) adapted to the accommodating cavity. When driven by an external force, the cylinder cover (7) moves toward the injection cylinder (6) until the abutment portion (71) abuts against the bottom of the accommodating cavity, so as to squeeze the rubber material in the accommodating cavity into the mold cavity (5) through the rubber injection port (61); A material return groove (8) is provided at one end of the connection between the lower mold (2) and the upper mold (1) close to the mold cavity (5), at one end of the connection between the upper mold (1) and the injection cylinder (6) close to the mold cavity (5), and at one end of the connection between the mold core (3) and the injection cylinder (6) close to the mold cavity (5). The material return groove (8) is used to accommodate the extruded rubber material.

2. The intake pipe rubber joint processing mold according to claim 1, characterized in that: The lower mold (2) is provided with a positioning groove (22), and the positioning groove (22) is adapted to the outer ring of the top cover and the top cover upper edge protrusion (41) of the skeleton (4). After the skeleton (4) is installed in the cavity (5), the top cover lower edge (42) of the skeleton (4) abuts against the upper mold (1), and is fixedly connected to the cavity (5) under the abutment of the upper mold (1).

3. The intake pipe rubber joint processing mold according to claim 1, characterized in that: A plurality of edge sealing ribs (32) are provided on the circumferential side surface of the mold core (3).

4. The intake pipe rubber joint processing mold according to claim 1, characterized in that: A plurality of guide columns are provided on the top surface of the lower mold (2), and the upper mold (1) is provided with guide holes adapted to the guide columns, and the height of the guide columns is adapted to the thickness of the upper mold (1).

5. The intake pipe rubber joint processing mold according to claim 1, characterized in that: Films (9) are attached to the inner and outer sides of the legs of the frame (4), and the film (9) is made of the same material as the rubber material.

6. A method for processing an intake pipe rubber joint, characterized in that: The process of using the intake pipe rubber joint processing mold according to any one of claims 1 to 5 further comprises the following steps: Mould installation: assembling the lower mould (2) and the upper mould (1) to form a mould assembly, and installing the mould assembly on a flat vulcanising machine; Mold preheating: heating the mold assembly to a set temperature and keeping it warm; Frame pretreatment: attaching a film (9) of a preset thickness to the inner and outer sides of the legs of the frame (4); Frame installation: placing the frame (4) into the mold cavity (5) and fixing it, and installing the mold core (3); Glue injection and pressurization: adding glue into the injection cylinder (6), pressurizing to a preset pressure, closing and locking the mold assembly, and injecting the glue into the mold cavity (5) from the glue injection port (61) at a preset injection pressure and combining with the frame (4); Vulcanization molding: Keep the lock in place for a preset time until the rubber material is vulcanized to form a rubber product; Demoulding: Open the mould, take out the mould core (3) and the rubber product together, and then remove the rubber product from the mould core (3).

7. The method for processing an intake pipe rubber joint according to claim 6, characterized in that: After the demoulding step, the method further comprises: Trimming: Peel off the flash formed when the rubber material is squeezed into the material return chute (8).

8. The method for processing an intake pipe rubber joint according to claim 6, characterized in that: When the preset thickness of the film (9) attached to the inner and outer sides of the legs of the skeleton (4) is 1-2 mm, the set temperature is 170±5° C., the preset pressure is 10 MPa, the preset injection pressure is 5 MPa, and the preset time is 8 minutes.

9. The method for processing an intake pipe rubber joint according to claim 6, characterized in that: When the preset thickness of the film (9) attached to the inner and outer sides of the legs of the skeleton (4) is 0.3 mm, the set temperature is 165±5° C., the preset pressure is 15 MPa, the preset injection pressure is 10 MPa, and the preset time is 10 minutes.

10. The method for processing an intake pipe rubber joint according to claim 6, characterized in that: In the skeleton preprocessing step, it also includes: The film (9) pre-formed according to a preset thickness is cut into a size of 200*20 mm, and the cut film (9) is attached to the inner and outer sides of the legs of the frame (4), wherein the film (9) and the rubber material are made of the same material.

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