Vulcanization forming equipment and sealing ring forming method

Abstract

The invention relates to the technical field of rubber vulcanization forming, and discloses vulcanization forming equipment and a sealing ring forming method. The top layer driving mechanism drives the upper forming mechanism and the lower forming mechanism to form the closed forming cavity, then the step-by-step pressing mechanism driven by the top layer driving mechanism continues to move downwards, and the step-by-step pressing mechanism sequentially drives all the forming assemblies to continue to move downwards from inside to outside. The space of the forming cavity is sequentially reduced from inside to outside, the space in the forming cavity is extruded, all the rubber raw material layers in the forming cavity are subjected to gradually-increased pressure from inside to outside to be subjected to vulcanization forming, enough pressing force can be generated from inside to outside, bubbles and the like in the vulcanization process can be extruded out from inside to outside, and the forming effect is good. By means of the technical scheme, bubbles are prevented from being broken at the center position, forming of rubber at the middle position can be effectively guaranteed, part of materials with defects are formed at the edge position, the defects of the part can be removed conveniently, and the performance of the produced rubber materials is improved.

Description

Technical Field

[0001] The invention relates to the technical field of rubber vulcanization molding, in particular to a vulcanization molding device and a sealing ring molding method. Background Art

[0002] Rubber vulcanization is a key technical link in the production process of rubber products. Its purpose is to cross-link the rubber molecular chains through vulcanizing agents, so that the rubber changes from thermoplastic to thermosetting material, giving the rubber products the required physical and chemical properties. The vulcanization process has a decisive influence on the service life, wear resistance, aging resistance and other properties of rubber products. The basic process of rubber vulcanization includes mixing rubber materials, molding, vulcanization, cooling and post-treatment. During the vulcanization process, the vulcanizing agent (such as sulfur, accelerator, etc.) reacts chemically with the rubber molecules to form a three-dimensional network structure. The vulcanization time, temperature and pressure are the main factors that constitute the vulcanization process conditions. The equipment used for rubber vulcanization molding mainly includes vulcanizers (rubber vulcanization molding equipment), including flat vulcanizers, fully automatic vacuum vulcanizers, fully automatic injection molding machines, etc. The vulcanizers (rubber vulcanization molding equipment) complete the vulcanization process of the rubber material in the mold by heating and applying pressure, thereby significantly improving the physical properties of the rubber such as elasticity, strength, heat resistance and chemical resistance; In tires, soles, seals, hoses and other rubber products, rubber can be used as one of the raw materials for the production of sealing rings because of its elastic deformation. Rubber rings are mostly made of vulcanized rubber through pressing and cutting. In actual production, multiple layers of rubber can be stacked for production according to actual needs to obtain multi-layer rubber sealing rings with different elastic deformation properties. The vulcanization of multiple layers of rubber often requires heating and pressurizing vulcanization separately according to the type of rubber. The force uniformity and force direction of the rubber vulcanization molding equipment and the degree of heating uniformity have a great influence on the vulcanization process. After the multiple layers of rubber are vulcanized and formed separately, they are compounded by pressurized bonding and other methods, and then punched out to produce rubber sealing rings. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a vulcanization molding device and a sealing ring molding method.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: A vulcanization molding equipment comprises: a fixed pedestal, an operation terminal is arranged on one side of the top of the fixed pedestal, a positioning mechanism is arranged on the other side of the top of the fixed pedestal, a bottom buffer mechanism and a lower molding mechanism are arranged at the bottom of the positioning mechanism, a top driving mechanism and an upper molding mechanism are arranged at the top of the positioning mechanism; the upper molding mechanism comprises an upper molding shell and a plurality of molding components, the plurality of molding components are arranged in sequence from the inside to the outside of the upper molding shell, a step-by-step pressing mechanism is arranged at the top of the upper molding mechanism, the step-by-step pressing mechanism can drive the upper molding mechanism under the drive of the top driving mechanism, and the upper molding mechanism can move to the lower molding mechanism under the restriction of the positioning mechanism. One side of the molding mechanism is close; when the upper molding mechanism and the lower molding mechanism are fitted together, the lower molding mechanism overcomes the buffering force provided by the bottom buffering mechanism and continues to move downward with the movement of the upper molding mechanism; after the upper molding mechanism and the lower molding mechanism are molded together, a closed molding cavity is formed between the upper molding mechanism and the lower molding mechanism; when the upper molding mechanism and the lower molding mechanism move to the bottom position, the step-by-step pressing mechanism can drive each of the molding components to move downward from the inside to the outside, reduce the space of the molding cavity from the inside to the outside, squeeze the space inside the molding cavity, and vulcanize the rubber inside the molding cavity under gradually increasing pressure from the inside to the outside.

[0005] Preferably, the lower molding mechanism includes a lower positioning plate and a lower molding shell, and the lower molding shell is slidably connected to the lower positioning plate; the lower molding shell can slide laterally from a molding position directly above the lower positioning plate to a discharge position on one side of the lower positioning plate; the positioning mechanism includes a plurality of positioning shafts, and each of the positioning shafts passes through the upper molding shell and the lower positioning plate respectively.

[0006] Preferably, a plurality of plug-in locking plates are provided on the outer side of the lower molding shell, and a limiting groove is provided at the bottom end of each positioning shaft; both sides of each plug-in locking plate are fitted between the inner walls on both sides of the limiting groove, and each plug-in locking plate can extend into the limiting groove during the movement from the discharge position of the lower molding shell to the molding position, and the length of the limiting groove is greater than the length of the plug-in locking plate extending into the limiting groove.

[0007] Preferably, when the lower molding shell is located at the molding position, each plug-in locking plate can only slide up and down inside the corresponding limit groove, and each limit groove limits the longitudinal movement of the lower molding shell through each plug-in locking plate, and the lower molding shell can only move up and down under the restriction of each positioning axis.

[0008] Preferably, each of the molding components is slidably connected up and down with the adjacent molding components, and the outer side of the molding component located at the outermost side is slidably connected with the upper molding shell; a plurality of connecting sliders are provided on the outer side of each of the molding components, a plurality of connecting grooves are provided on the inner side of each of the molding components, and each molding groove is provided on the inner top end of the upper molding shell; each connecting slider of the molding components located inside is respectively embedded in the interior of each connecting groove located outside, and each connecting slider of the molding components located at the outermost side is respectively embedded in the interior of each corresponding molding groove.

[0009] Preferably, the step-by-step pressing mechanism includes a pressing shell and a driven pressing plate, the pressing shell and the driven pressing plate are slidably connected, a pressing cavity is present between the pressing shell and the driven pressing plate, an elastic water bag is arranged inside the pressing cavity; the top end of the elastic water bag is connected and fixed to the driven pressing plate, and the pressing shell is connected and fixed to the upper molding shell; when the driven pressing plate is at the top end of the pressing shell, the elastic water bag is in contact only with the molding component located in the center.

[0010] Preferably, when the driven pressing plate gradually moves toward the side of the upper molding shell, the pressing cavity gradually shrinks, the elastic water bag gradually fits the shape of the pressing cavity, gradually shrinks in the vertical direction, and expands sequentially from the inside to the outside in the horizontal direction, gradually coming into contact with each of the molding components from the inside to the outside, and the main line from the inside to the outside drives each of the molding components to move downward in turn, shrinking the space of the molding cavity from the inside to the outside.

[0011] Preferably, the top-level driving mechanism includes a central pressing cylinder and several auxiliary pressing cylinders, the telescopic end of the central pressing cylinder is fixed to the driven pressing plate, and the telescopic ends of several auxiliary pressing cylinders are fixed to the pressing shell; the elongation of the telescopic end of the central pressing cylinder is greater than the elongation of the telescopic ends of each auxiliary pressing cylinder, and the pressing force provided by the central pressing cylinder is also greater than the pressing force provided by each auxiliary pressing cylinder.

[0012] Preferably, the bottom buffer mechanism includes a connecting base and a supporting base, the top end of the supporting base is fixed to the lower positioning plate, and a plurality of buffer springs are arranged between the connecting base and the supporting base, and each of the buffer springs can contract when the lower positioning plate moves downward; a heater is arranged inside the lower molding shell, and a heater is arranged inside each molding component, and the heating power of the heater inside each molding component can be adjusted independently.

[0013] A sealing ring molding method, characterized in that the sealing ring raw material is manufactured using the above-mentioned vulcanization molding equipment, comprising the following steps: Fill the rubber raw material layers to be vulcanized and molded into the lower molding mechanism one by one; Through the control of the operating terminal, the top driving mechanism drives the upper forming mechanism to move closer to the lower forming mechanism under the restriction of the positioning mechanism through the step-by-step pressing mechanism; After the upper molding mechanism and the lower molding mechanism are attached to each other, a closed molding cavity is formed between the upper molding mechanism and the lower molding mechanism, and each rubber raw material layer is confined inside the molding cavity; The top-level driving mechanism continues to drive the step-by-step pressing mechanism to move downward, and the step-by-step pressing mechanism drives each molding component to continue to move downward from the inside to the outside, shrinking the space of the molding cavity from the inside to the outside, squeezing the space inside the molding cavity, and subjecting each rubber raw material layer inside the molding cavity to gradually increasing pressure from the inside to the outside and vulcanizing and molding, thereby producing sealing ring raw materials.

[0014] Compared with the prior art, the present invention provides a vulcanization molding device and a sealing ring molding method, which have the following beneficial effects: 1. In this vulcanization molding equipment, after the upper molding mechanism and the lower molding mechanism are attached to each other, a closed molding cavity is formed between the upper molding mechanism and the lower molding mechanism, and each rubber raw material layer is confined inside the molding cavity, thereby preventing the safety hazard caused by the rubber vulcanized and molded in the high-pressure environment inside the molding cavity being squeezed out of the molding cavity, so as to effectively ensure the vulcanization effect inside the molding cavity; the step-by-step pressing mechanism driven by the top driving mechanism continues to move downward, and the step-by-step pressing mechanism drives each molding component to continue to move downward from the inside to the outside in turn, and the space of the molding cavity is successively reduced from the inside to the outside, and the space inside the molding cavity is squeezed, and each rubber raw material layer inside the molding cavity is subjected to gradually increasing pressure from the inside to the outside for vulcanization molding, and sufficient pressing force can be generated from the inside to the outside, and bubbles in the vulcanization process can be squeezed out from the inside to the outside, so as to avoid the rupture of bubbles in the central position, and the molding of the rubber in the middle position can be effectively guaranteed, and some materials with defects are molded at the edge position, so that the defects can be easily removed, and the performance of the output rubber material can be improved.

[0015] 2. This vulcanization molding equipment can switch the position of the lower molding shell between a molding position located directly above the lower positioning plate and a discharge position located on one side of the lower positioning plate through a sliding connection between the lower molding shell and the lower positioning plate. When the lower molding shell is at the discharge position, it is convenient to remove the vulcanized rubber from the inside of the lower molding shell and to place the raw materials that need to be vulcanized into the inside of the lower molding shell. Through the cooperation between each plug-in locking plate and the corresponding limit groove, when the lower molding shell is at the molding position, the lower molding shell can only move up and down under the restriction of each positioning axis, thereby ensuring the stability of the mold closing of the lower molding shell and the upper molding shell, while avoiding the movement of the lower molding shell in the longitudinal direction, and effectively ensuring the sealing of the molding cavity during the movement.

[0016] 3. In this vulcanization molding equipment, the elastic water bag can be gradually pressed by the driven pressing plate and gradually fit the shape of the pressing cavity, so that it can gradually shrink in the vertical direction and expand in sequence from the inside to the outside in the horizontal direction, so that it can gradually contact with each molding component from the inside to the outside. The main line drives each molding component downward in sequence from the inside to the outside, and the space of the molding cavity is successively reduced from the inside to the outside, so that the space inside the molding cavity can be squeezed, and each rubber raw material layer inside the molding cavity is subjected to gradually increasing pressure from the inside to the outside and vulcanized, and sufficient pressing force can be generated from the inside to the outside to ensure the vulcanization molding of the rubber from the inside to the outside. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is one of the three-dimensional structural schematic diagrams of a vulcanization molding device of the present invention; Figure 2 This is a second schematic diagram of the three-dimensional structure of a vulcanization molding device of the present invention; Figure 3 A cross-sectional view of a vulcanization molding device of the present invention; Figure 4 It is a schematic diagram of the assembly of a vulcanization molding equipment of the present invention; Figure 5 It is a partial structural schematic diagram of a positioning mechanism and a lower molding mechanism of a vulcanization molding device of the present invention; Figure 6 It is a three-dimensional structural schematic diagram of a lower molding mechanism of a vulcanization molding device of the present invention; Figure 7 It is one of the three-dimensional structural schematic diagrams of the upper forming mechanism of the present invention; Figure 8 This is the second schematic diagram of the three-dimensional structure of the upper forming mechanism of the present invention.

[0018] In the figure: 1. fixed base; 2. operating terminal; 3. positioning mechanism; 31. positioning shaft; 32. limiting groove; 4. bottom buffer mechanism; 41. connecting base; 42. supporting base; 43. buffer spring; 5. lower forming mechanism; 51. lower positioning plate; 52. lower forming shell; 53. plug-in locking plate; 6. top driving mechanism; 61. central pressing cylinder; 62. auxiliary pressing cylinder; 7. upper forming mechanism; 71. upper forming shell; 711. forming slide; 72. forming assembly; 721. connecting slider; 722. connecting slide; 8. step-by-step pressing mechanism; 81. pressing shell; 82. driven pressing plate; 83. elastic water bag. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] As introduced in the background technology, there are deficiencies in the prior art. In order to solve the above technical problems, the present application proposes a vulcanization molding equipment and a sealing ring molding method.

[0021] Embodiment 1: See also Figure 1-Figure 8A vulcanization molding device comprises: a fixed pedestal 1, an operation terminal 2 is arranged on one side of the top of the fixed pedestal 1, a positioning mechanism 3 is arranged on the other side of the top of the fixed pedestal 1, a bottom buffer mechanism 4 and a lower molding mechanism 5 are arranged at the bottom end of the positioning mechanism 3, a top driving mechanism 6 and an upper molding mechanism 7 are arranged at the top of the positioning mechanism 3; the upper molding mechanism 7 comprises an upper molding shell 71 and a plurality of molding components 72, the plurality of molding components 72 are arranged in sequence from the inside to the outside inside the upper molding shell 71, a step-by-step pressing mechanism 8 is arranged at the top of the upper molding mechanism 7, and the step-by-step pressing mechanism 8 can drive the upper molding mechanism 7 under the drive of the top driving mechanism 6, and the upper molding mechanism 7 can be limited by the positioning mechanism 3. The upper molding mechanism 7 is pressed downward and approaches one side of the lower molding mechanism 5; when the upper molding mechanism 7 is fitted with the lower molding mechanism 5, the lower molding mechanism 5 overcomes the buffering force provided by the bottom buffering mechanism 4 and continues to move downward with the movement of the upper molding mechanism 7; after the upper molding mechanism 7 and the lower molding mechanism 5 are molded, a closed molding cavity is formed between the upper molding mechanism 7 and the lower molding mechanism 5; when the upper molding mechanism 7 and the lower molding mechanism 5 move to the bottom position, the step-by-step pressing mechanism 8 can drive each molding component 72 to move downward from the inside to the outside, reduce the space of the molding cavity from the inside to the outside, squeeze the space inside the molding cavity, and vulcanize the rubber inside the molding cavity under gradually increasing pressure from the inside to the outside.

[0022] This type of vulcanization molding equipment can be applied to the vulcanization of a single rubber or the vulcanization of a multi-layer composite rubber. When it is used specifically, the rubber raw material to be vulcanized and molded is first filled into the lower molding mechanism 5 (in the process of vulcanizing the multi-layer composite rubber, the rubber raw material layers can be filled one by one according to the actual layer order), and then the operation terminal 2 is operated (the means of controlling the movement of the hydraulic cylinder of the top driving mechanism 6 by the operating terminal 2 is a common technical solution in the prior art, and the specific operation means of the operating terminal 2 is also a common technical solution in the prior art, which will not be repeated here), so that the top driving mechanism 6 drives the upper molding mechanism 7 to approach the side of the lower molding mechanism 5 under the restriction of the positioning mechanism 3 through the step-by-step pressing mechanism 8, and after the upper molding mechanism 7 and the lower molding mechanism 5 are fitted together (after the mold is closed), a closed molding cavity is formed between the upper molding mechanism 7 and the lower molding mechanism 5 (a pressure relief valve is provided in the molding cavity connection) , each rubber raw material layer is confined inside the molding cavity, thereby preventing the safety hazard caused by the rubber vulcanized and molded in the high-pressure environment inside the molding cavity being squeezed out of the molding cavity, so as to effectively ensure the vulcanization effect inside the molding cavity; the step-by-step pressing mechanism 8 driven by the top driving mechanism 6 continues to move downward, and the step-by-step pressing mechanism 8 drives each molding component 72 to continue to move downward from the inside to the outside in turn, and the space of the molding cavity is successively reduced from the inside to the outside, and the space inside the molding cavity is squeezed, and each rubber raw material layer inside the molding cavity is subjected to gradually increasing pressure from the inside to the outside (in the horizontal direction) and vulcanized, and sufficient pressing force can be generated from the inside to the outside, and bubbles in the vulcanization process can be squeezed out from the inside to the outside, avoiding the rupture of bubbles in the central position, and can effectively ensure the molding of the rubber in the middle position, and some materials with defects are molded at the edge position, which can facilitate the removal of these defects and improve the performance of the output rubber material.

[0023] Embodiment 2: See also Figure 1-Figure 8 , which is different from the above-mentioned embodiment, is that the lower molding mechanism 5 includes a lower positioning plate 51 and a lower molding shell 52, and the lower molding shell 52 is slidably connected to the lower positioning plate 51; the lower molding shell 52 can slide laterally from a molding position directly above the lower positioning plate 51 to a discharge position on one side of the lower positioning plate 51; the positioning mechanism 3 includes a plurality of positioning shafts 31, and each positioning shaft 31 passes through the upper molding shell 71 and the lower positioning plate 51 respectively.

[0024] A plurality of plug-in locking plates 53 are arranged on the outer side of the lower molding shell 52, and a limiting groove 32 is provided at the bottom end of each positioning shaft 31; both sides of each plug-in locking plate 53 are fitted with the inner walls on both sides of the limiting groove 32, and each plug-in locking plate 53 can extend into the limiting groove 32 during the movement from the discharge position of the lower molding shell 52 to the molding position, and the length of the limiting groove 32 is greater than the length of the plug-in locking plate 53 extending into the limiting groove 32.

[0025] When the lower molding shell 52 is located at the molding position, each plug-in locking plate 53 can only slide up and down inside the corresponding limit groove 32. Each limit groove 32 limits the longitudinal movement of the lower molding shell 52 through each plug-in locking plate 53. The lower molding shell 52 can only move up and down under the restriction of each positioning shaft 31.

[0026] During specific use, through the sliding connection between the lower molding shell 52 and the lower positioning plate 51, the lower molding shell 52 can be switched between the molding position located directly above the lower positioning plate 51 and the discharge position located on one side of the lower positioning plate 51. When the lower molding shell 52 is at the discharge position, it is convenient to remove the vulcanized rubber from the inside of the lower molding shell 52 and to place the raw materials that need to be vulcanized into the inside of the lower molding shell 52. Through the cooperation between each plug-in locking plate 53 and the corresponding limit groove 32, when the lower molding shell 52 is at the molding position, the lower molding shell 52 can only move up and down under the restriction of each positioning shaft 31, thereby ensuring the stability of the mold closing of the lower molding shell 52 and the upper molding shell 71, while avoiding the movement of the lower molding shell 52 in the longitudinal direction, and effectively ensuring the sealing of the molding cavity during the movement.

[0027] Embodiment three: See also Figure 1-Figure 8 , which is different from the above-mentioned embodiment, each molding component 72 is respectively connected to the adjacent molding components 72 by sliding up and down, and the outer side of the molding component 72 located at the outermost side is connected to the upper molding shell 71 by sliding; a plurality of connecting sliders 721 are arranged on the outer side of each molding component 72, a plurality of connecting grooves 722 are arranged on the inner side of each molding component 72, and each molding groove 711 is arranged on the inner top of the upper molding shell 71; each connecting slider 721 of the molding component 72 located inside is respectively embedded in each connecting groove 722 located outside, and each connecting slider 721 of the molding component 72 located at the outermost side is respectively embedded in each corresponding molding groove 711.

[0028] The step-by-step pressing mechanism 8 includes a pressing shell 81 and a driven pressing plate 82. The pressing shell 81 and the driven pressing plate 82 are slidably connected. There is a pressing cavity between the pressing shell 81 and the driven pressing plate 82. An elastic water bag 83 is arranged inside the pressing cavity. The top end of the elastic water bag 83 is connected and fixed to the driven pressing plate 82, and the pressing shell 81 is connected and fixed to the upper molding shell 71. When the driven pressing plate 82 is at the top end of the pressing shell 81, the elastic water bag 83 is only in contact with the molding component 72 located in the center.

[0029] When the driven pressing plate 82 gradually moves toward the side of the upper molding shell 71, the pressing cavity gradually shrinks, the elastic water bag 83 gradually fits the shape of the pressing cavity, gradually shrinks in the vertical direction, and expands from the inside to the outside in the horizontal direction, gradually contacting each molding component 72 from the inside to the outside. The main line from the inside to the outside drives each molding component 72 to move downward in turn, shrinking the space of the molding cavity from the inside to the outside.

[0030] Therefore, when in use, after the lower molding shell 52 and the upper molding shell 71 are molded together, the elastic water bag 83 is only in contact with the molding component 72 located in the center because it still has a tendency to move downward. At this time, due to the action of the rubber inside the molding cavity, the bottom surfaces of each molding component 72 are all located in the same horizontal plane. Then, when the molding cavity no longer moves downward, the elastic water bag 83 is pressurized, and the pressure is first transmitted to the molding component 72 located in the center, and the molding component 72 located in the center is driven to move downward to generate pressure. In the subsequent process, the elastic water bag 83 can be gradually pressed by the driven pressing plate 82, and gradually fit the shape of the pressing cavity, so that it can be vertically pressed. The direction gradually shrinks, and expands in sequence from the inside to the outside in the horizontal direction (when the pressing cavity is in the smallest state, it can cooperate with the buffering of each buffer spring 43 in the following text to avoid the elastic water bag 83 from being compressed and ruptured), so that it can gradually contact with each molding component 72 from the inside to the outside, and the main line drives each molding component 72 to move downward from the inside to the outside, and the space of the molding cavity is successively reduced from the inside to the outside, so that the space inside the molding cavity can be squeezed, and each rubber raw material layer inside the molding cavity is subjected to gradually increasing pressure from the inside to the outside (in the horizontal direction) and vulcanized, and sufficient pressing force can be generated from the inside to the outside, so as to ensure the vulcanization molding of the rubber from the inside to the outside.

[0031] The top-level driving mechanism 6 includes a central pressing cylinder 61 and several auxiliary pressing cylinders 62. The telescopic end of the central pressing cylinder 61 is fixed to the driven pressing plate 82, and the telescopic ends of several auxiliary pressing cylinders 62 are fixed to the pressing shell 81. The elongation of the telescopic end of the central pressing cylinder 61 is greater than the elongation of the telescopic ends of each auxiliary pressing cylinder 62, and the pressing force provided by the central pressing cylinder 61 is also greater than the pressing force provided by each auxiliary pressing cylinder 62.

[0032] The bottom buffer mechanism 4 includes a connecting base 41 and a supporting base 42. The top of the supporting base 42 is fixed to the lower positioning plate 51. A plurality of buffer springs 43 are arranged between the connecting base 41 and the supporting base 42. Each buffer spring 43 can contract when the lower positioning plate 51 moves downward. A heater is arranged inside the lower molding shell 52. A heater is arranged inside each molding component 72. The heating power of the heater inside each molding component 72 can be adjusted independently.

[0033] During use, by setting the central pressing cylinder 61 and several auxiliary pressing cylinders 62, the extension degree of the telescopic end of the central pressing cylinder 61 is greater than the extension degree of the telescopic end of each auxiliary pressing cylinder 62, and the pressing force provided by the central pressing cylinder 61 is also greater than the pressing force provided by each auxiliary pressing cylinder 62, so that the driven pressing plate 82 can slide with the pressing shell 81, so that each molding component 72 can be driven downward in sequence through the main line from the inside to the outside of the elastic water bag 83, and each rubber raw material layer inside the molding cavity is subjected to gradually increasing pressure from the inside to the outside and vulcanized and molded. In specific use, a heater is provided inside the lower molding shell 52, and a heater is provided inside each molding component 72. The heating power of the heater inside each molding component 72 can be adjusted independently, and different heat outputs can be provided to each position inside the molding cavity, so as to effectively cooperate with the vulcanization molding effect inside the molding cavity.

[0034] Embodiment 4: A sealing ring molding method, using a vulcanization molding device as described in any one of Embodiments 1 to 3 to manufacture a sealing ring raw material, comprises the following steps: Fill the rubber raw material layers to be vulcanized and molded into the lower molding mechanism 5 one by one; Through the control of the operation terminal 2, the top driving mechanism 6 drives the upper forming mechanism 7 to move closer to the side of the lower forming mechanism 5 under the restriction of the positioning mechanism 3 through the step-by-step pressing mechanism 8; After the upper molding mechanism 7 and the lower molding mechanism 5 are attached to each other, a closed molding cavity is formed between the upper molding mechanism 7 and the lower molding mechanism 5, and each rubber raw material layer is confined inside the molding cavity; The top-level driving mechanism 6 continues to drive the step-by-step pressing mechanism 8 to move downward, and the step-by-step pressing mechanism 8 drives each molding component 72 to continue to move downward from the inside to the outside, thereby successively reducing the space of the molding cavity from the inside to the outside, squeezing the space inside the molding cavity, and subjecting each rubber raw material layer inside the molding cavity to gradually increasing pressure from the inside to the outside and vulcanizing and molding, thereby producing sealing ring raw materials.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A vulcanization molding equipment, characterized in that: include: A fixed pedestal, wherein an operation terminal is arranged on one side of the top of the fixed pedestal, a positioning mechanism is arranged on the other side of the top of the fixed pedestal, a bottom buffer mechanism and a lower forming mechanism are arranged at the bottom end of the positioning mechanism, and a top driving mechanism and an upper forming mechanism are arranged at the top end of the positioning mechanism; The upper forming mechanism comprises an upper forming shell and a plurality of forming components, wherein the plurality of forming components are sequentially arranged from the inside to the outside inside the upper forming shell, and a step-by-step pressing mechanism is arranged at the top of the upper forming mechanism, and the step-by-step pressing mechanism can drive the upper forming mechanism under the drive of the top driving mechanism, and the upper forming mechanism can approach one side of the lower forming mechanism under the restriction of the positioning mechanism; When the upper forming mechanism and the lower forming mechanism are in contact with each other, the lower forming mechanism overcomes the buffering force provided by the bottom buffering mechanism and continues to move downward along with the movement of the upper forming mechanism; After the upper molding mechanism and the lower molding mechanism are molded together, a closed molding cavity is formed between the upper molding mechanism and the lower molding mechanism; When the upper molding mechanism and the lower molding mechanism move to the bottom position, the step-by-step pressing mechanism can drive each molding component to move downward in sequence from the inside to the outside, shrink the space of the molding cavity from the inside to the outside in sequence, squeeze the space inside the molding cavity, and vulcanize the rubber inside the molding cavity under gradually increasing pressure from the inside to the outside.

2. A vulcanization molding equipment according to claim 1, characterized in that: The lower molding mechanism comprises a lower positioning plate and a lower molding shell, and the lower molding shell is slidably connected to the lower positioning plate; The lower forming shell can slide laterally from a forming position located directly above the lower positioning plate to a discharge position located on one side of the lower positioning plate; The positioning mechanism includes a plurality of positioning shafts, and each of the positioning shafts passes through the upper molding shell and the lower positioning plate respectively.

3. A vulcanization molding equipment according to claim 2, characterized in that: A plurality of plug-in locking plates are arranged on the outer side of the lower molded shell, and a limiting groove is arranged at the bottom end of each positioning shaft; Both sides of each of the plug-in locking plates are fitted between the inner walls of both sides of the limit groove, and each of the plug-in locking plates can extend into the limit groove during the movement from the discharge position of the lower molding shell to the molding position, and the length of the limit groove is greater than the length of the plug-in locking plate extending into the limit groove.

4. A vulcanization molding equipment according to claim 3, characterized in that: When the lower molding shell is in the molding position, each plug-in locking plate can only slide up and down inside the corresponding limit groove, and each limit groove limits the longitudinal movement of the lower molding shell through each plug-in locking plate. The lower molding shell can only move up and down under the restriction of each positioning axis.

5. A vulcanization molding equipment according to claim 1, characterized in that: Each of the molding components is slidably connected to the adjacent molding components up and down, and the outer side of the molding component located at the outermost side is slidably connected to the upper molding shell; The outer side of each of the molding components is provided with a plurality of connecting sliders, the inner side of each of the molding components is provided with a plurality of connecting slide grooves, and the inner top end of the upper molding shell is provided with each molding slide groove; Each connecting slider of the molding assembly located inside is respectively embedded in each connecting slide groove located outside, and each connecting slider of the molding assembly located on the outermost side is respectively embedded in each corresponding molding slide groove.

6. A vulcanization molding equipment according to claim 1, characterized in that: The step-by-step pressing mechanism comprises a pressing shell and a driven pressing plate, wherein the pressing shell and the driven pressing plate are slidably connected, and a pressing cavity is provided between the pressing shell and the driven pressing plate, wherein an elastic water bag is provided inside the pressing cavity; The top end of the elastic water bag is connected and fixed to the driven pressing plate, and the pressing shell is connected and fixed to the upper forming shell; When the driven pressing plate is at the top end of the pressing shell, the elastic water bag is only in contact with the molding component located in the center.

7. A vulcanization molding equipment according to claim 6, characterized in that: When the driven pressing plate gradually moves toward the side of the upper molding shell, the pressing cavity gradually shrinks, and the elastic water bag gradually fits the shape of the pressing cavity, gradually shrinks in the vertical direction, and expands from the inside to the outside in the horizontal direction, gradually contacting each of the molding components from the inside to the outside. The main line from the inside to the outside drives each of the molding components to move downward in turn, and the space of the molding cavity is reduced from the inside to the outside.

8. A vulcanization molding equipment according to claim 7, characterized in that: The top layer driving mechanism comprises a central pressing cylinder and a plurality of auxiliary pressing cylinders, the telescopic end of the central pressing cylinder is fixed to the driven pressing plate, and the telescopic ends of the plurality of auxiliary pressing cylinders are fixed to the pressing shell; The extension degree of the telescopic end of the central pressing cylinder is greater than the extension degree of the telescopic end of each of the auxiliary pressing cylinders, and the pressing force provided by the central pressing cylinder is also greater than the pressing force provided by each of the auxiliary pressing cylinders.

9. A vulcanization molding equipment according to claim 2, characterized in that: The bottom buffer mechanism includes a connecting seat and a supporting seat, the top of the supporting seat is fixed to the lower positioning plate, and a plurality of buffer springs are arranged between the connecting seat and the supporting seat, and each of the buffer springs can be contracted when the lower positioning plate moves downward; A heater is arranged inside the lower molding shell, and a heater is arranged inside each molding component. The heating power of the heater inside each molding component can be adjusted independently.

10. A sealing ring forming method, characterized in that: The vulcanization molding equipment as described in any one of claims 1 to 9 is used to manufacture the sealing ring raw material, comprising the following steps: Fill the rubber raw material layers to be vulcanized and molded into the lower molding mechanism one by one; Through the control of the operating terminal, the top driving mechanism drives the upper forming mechanism to move closer to the lower forming mechanism under the restriction of the positioning mechanism through the step-by-step pressing mechanism; After the upper molding mechanism and the lower molding mechanism are attached to each other, a closed molding cavity is formed between the upper molding mechanism and the lower molding mechanism, and each rubber raw material layer is confined inside the molding cavity; The top-level driving mechanism continues to drive the step-by-step pressing mechanism to move downward, and the step-by-step pressing mechanism drives each molding component to continue to move downward from the inside to the outside, shrinking the space of the molding cavity from the inside to the outside, squeezing the space inside the molding cavity, and subjecting each rubber raw material layer inside the molding cavity to gradually increasing pressure from the inside to the outside and vulcanizing and molding, thereby producing sealing ring raw materials.

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