A vulcanization molding device and a sealing ring molding method

Abstract

The present invention relates to the technical field of rubber vulcanization molding, and discloses a vulcanization molding device and a sealing ring molding method. The top driving mechanism of the present invention drives a closed molding cavity to be formed between the upper molding mechanism and the lower molding mechanism, and then the step-by-step pressing mechanism driven by the top driving mechanism continues to move downward. The step-by-step pressing mechanism drives each molding component to continue to move downward in sequence from the inside to the outside, reducing the space of the molding cavity from the inside to the outside in sequence, squeezing the space inside the molding cavity, and vulcanizing each rubber raw material layer inside the molding cavity under gradually increasing pressure from the inside to the outside. It can generate sufficient pressing force from the inside to the outside, and can extrude bubbles and the like during the vulcanization process from the inside to the outside, avoiding the rupture of bubbles at the central position, effectively ensuring the molding of the rubber at the middle position, molding part of the defective materials at the edge position, and facilitating the removal of such defects, thereby improving the performance of the produced rubber material.

Description

Technical Field

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

[0002] Rubber vulcanization molding is a key technical link in the production process of rubber products. Its purpose is to crosslink rubber molecular chains through vulcanizing agents, so that rubber changes from thermoplastic to thermosetting material, endowing rubber products with required physical and chemical properties; the vulcanization process has a decisive impact on the performance of rubber products such as service life, wear resistance, and aging resistance; the basic process of rubber vulcanization includes mixing rubber compounds, molding, vulcanization, cooling, and post-treatment. During the vulcanization process, vulcanizing agents (such as sulfur, accelerators, etc.) react with rubber molecules to form a three-dimensional network structure. The vulcanization time, temperature, and pressure are the main factors constituting the vulcanization process conditions.

[0003] 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 vulcanizer (rubber vulcanization molding equipment) makes the rubber material complete the vulcanization process in the mold by heating and applying pressure, thereby significantly improving the physical properties of rubber such as elasticity, strength, heat resistance, and chemical resistance.

[0004] Among various rubber products such as tires, shoe soles, seals, and hoses, since rubber can undergo elastic deformation, rubber can be used as one of the raw materials for producing sealing rings. Rubber rings are mostly formed by pressing and cutting vulcanized rubber. In actual production, multiple layers of rubber can be laminated according to actual needs to produce multi-layer rubber sealing rings with different elastic deformation properties. The vulcanization molding of multi-layer rubber mostly requires separate heating and pressurization vulcanization according to the type of rubber. The uniformity of force application, the direction of force application, and the degree of heating uniformity of the rubber vulcanization molding equipment all have a great impact on the vulcanization process. After the multi-layer rubber is vulcanized and molded separately, the multi-layer rubber is then compounded by means of pressurized pasting, etc., and then punched to produce rubber sealing rings. Summary of the Invention

[0005] Aiming at the deficiencies of the prior art, the present invention provides a vulcanization molding device and a sealing ring molding method.

[0006] To solve the above technical problems, the present invention provides the following technical solutions:

[0007] A vulcanization molding device, comprising: a fixed pedestal, on one side of the top of the fixed pedestal is provided an operation terminal, on the other side of the top of the fixed pedestal is provided a positioning mechanism, at the bottom end inside the positioning mechanism is provided a bottom buffer mechanism and a lower molding mechanism, and at the top end inside the positioning mechanism is provided a top driving mechanism and an upper molding mechanism; the upper molding mechanism includes an upper molding housing and a plurality of molding components, and the plurality of molding components are sequentially arranged from inside to outside inside the upper molding housing, at the top of the upper molding mechanism is provided a step-by-step pressing mechanism, and under the drive of the top driving mechanism, the step-by-step pressing mechanism can drive the upper molding mechanism, and the upper molding mechanism can approach one side of the lower molding mechanism under the restriction of the positioning mechanism; when the upper molding mechanism and the lower molding mechanism are in contact, the lower molding mechanism overcomes the buffer force provided by the bottom buffer mechanism and continues to move downward along with the movement of the upper molding mechanism; after the upper molding mechanism and the lower molding mechanism are closed, 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 bottommost position, the step-by-step pressing mechanism can drive each of the molding components to move downward in sequence from inside to outside, gradually reduce the space of the molding cavity from inside to outside, squeeze the space inside the molding cavity, and vulcanize and mold the rubber inside the molding cavity under gradually increasing pressure from inside to outside.

[0008] Preferably, the lower molding mechanism includes a lower positioning plate and a lower molding housing, and the lower molding housing is slidably connected to the lower positioning plate; the lower molding housing can slide horizontally from the molding position directly above the lower positioning plate to the discharging position on one side of the lower positioning plate; the positioning mechanism includes a plurality of positioning shafts, and each of the positioning shafts respectively penetrates through the upper molding housing and the lower positioning plate.

[0009] Preferably, a plurality of plug-in locking plates are arranged on the outer side of the lower molding housing, and a limiting groove is opened at the bottom end of each of the positioning shafts; both sides of each of the plug-in locking plates are in contact with the inner walls on both sides of the limiting groove, and each of the plug-in locking plates can extend into the limiting groove during the movement from the discharging position to the molding position of the lower molding housing, and the length of the limiting groove is greater than the length of the plug-in locking plate extending into the limiting groove.

[0010] Preferably, when the lower molding housing is in the molding position, each of the plug-in locking plates can only slide up and down inside the corresponding limiting groove, and each of the limiting grooves restricts the longitudinal movement of the lower molding housing through each of the plug-in locking plates, and the lower molding housing can only move up and down under the restriction of each of the positioning shafts.

[0011] Preferably, each of the molding components is slidably connected up and down with the adjacent molding components, and the outer side of the outermost molding component is slidably connected with the upper molding housing; a plurality of connecting sliders are arranged on the outer sides of each of the molding components, a plurality of connecting chutes are arranged on the inner sides of each of the molding components, and a plurality of molding chutes are arranged at the inner top end of the upper molding housing; the connecting sliders of the inner molding components are respectively embedded in the corresponding connecting chutes of the outer molding components, and the connecting sliders of the outermost molding component are respectively embedded in the corresponding molding chutes.

[0012] Preferably, the step-by-step pressing mechanism includes a pressing housing and a driven pressing plate, the pressing housing is slidably connected with the driven pressing plate, there is a pressing cavity between the pressing housing and the driven pressing plate, and an elastic water bag is arranged inside the pressing cavity; the top end of the elastic water bag is fixedly connected with the driven pressing plate, and the pressing housing is fixedly connected with the upper molding housing; when the driven pressing plate is at the top end of the pressing housing, the elastic water bag only contacts the central molding component.

[0013] Preferably, when the driven pressing plate gradually moves towards the upper molding housing, 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 from the inside to the outside in the horizontal direction, and gradually contacts each of the molding components from the inside to the outside, and sequentially drives each of the molding components to move downward from the inside to the outside, and gradually reduces the space of the molding cavity from the inside to the outside.

[0014] Preferably, the top layer driving mechanism includes 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 housing; the elongation degree of the telescopic end of the central pressing cylinder is greater than the elongation degree of the telescopic ends 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.

[0015] Preferably, the bottom layer buffering mechanism includes a connecting pedestal and a supporting pedestal, the top end of the supporting pedestal is fixed to the lower positioning plate, a plurality of buffer springs are arranged between the connecting pedestal and the supporting pedestal, and each of the buffer springs can contract when the lower positioning plate moves downward; a heater is arranged inside the lower molding housing, heaters are arranged inside each of the molding components, and the heating power of the heaters inside each of the molding components can be independently adjusted.

[0016] A method for forming a sealing ring, characterized in that a vulcanization forming device as described above is used to manufacture the raw material of the sealing ring, and the method includes the following steps:

[0017] One by one, the rubber raw material layers to be vulcanized and formed are filled into the lower forming mechanism;

[0018] Under the control of the operation terminal, the top driving mechanism drives the upper forming mechanism to approach the lower forming mechanism side by side under the restriction of the positioning mechanism through the step-by-step pressing mechanism;

[0019] After the upper forming mechanism and the lower forming mechanism are attached to each other, a closed forming cavity is formed between the upper forming mechanism and the lower forming mechanism, and each rubber raw material layer is restricted inside the forming cavity;

[0020] The top driving mechanism continues to drive the step-by-step pressing mechanism to move downward. The step-by-step pressing mechanism drives each forming component to continue to move downward in sequence from the inside to the outside, gradually reducing the space of the forming cavity from the inside to the outside, squeezing the space inside the forming cavity, and vulcanizing and forming each rubber raw material layer inside the forming cavity under gradually increasing pressure from the inside to the outside to produce the raw material of the sealing ring.

[0021] Compared with the prior art, the present invention provides a vulcanization forming device and a method for forming a sealing ring, which have the following beneficial effects:

[0022] 1. For this vulcanization forming device, after the upper forming mechanism and the lower forming mechanism are attached to each other, a closed forming cavity is formed between the upper forming mechanism and the lower forming mechanism, and each rubber raw material layer is restricted inside the forming cavity, thereby preventing the safety hazard caused by the vulcanized rubber in the high-pressure environment inside the forming cavity from being extruded from the forming cavity, so as to effectively ensure the vulcanization effect inside the forming 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 forming component to continue to move downward in sequence from the inside to the outside, gradually reducing the space of the forming cavity from the inside to the outside, squeezing the space inside the forming cavity, and vulcanizing and forming each rubber raw material layer inside the forming cavity under gradually increasing pressure from the inside to the outside, so that sufficient pressing force can be generated from the inside to the outside, and the air bubbles and the like during the vulcanization process can be extruded from the inside to the outside, avoiding the rupture of the air bubbles at the central position, effectively ensuring the forming of the rubber at the middle position, and forming the part of the material with defects at the edge position, so as to facilitate the removal of the part of the defects and improve the performance of the produced rubber material.

[0023] 2. This vulcanization molding device can convert the position of the lower molding shell between the molding position directly above the lower positioning plate and the discharging position on one side of the lower positioning plate through the sliding connection between the lower molding shell and the lower positioning plate. When the lower molding shell is in the discharging position, it is convenient to take out the vulcanized rubber from the inside of the lower molding shell and place the raw materials to be vulcanized into the lower molding shell. Through the cooperation between each plug-in locking plate and the corresponding limiting groove, when the lower molding shell is in the molding position, the lower molding shell can only move up and down under the restriction of each positioning shaft, thus ensuring the stability of the mold closing between the lower molding shell and the upper molding shell, avoiding the movement of the lower molding shell in the longitudinal direction, and effectively ensuring the sealing of the molding cavity during the movement.

[0024] 3. In this vulcanization molding device, the elastic water bag can be gradually pressed by the driven pressing plate, gradually conform to the shape of the pressing cavity, gradually shrink in the vertical direction, and expand from the inside to the outside in the horizontal direction, so as to gradually contact with each molding component from the inside to the outside. The main line drives each molding component to move downward from the inside to the outside in turn, gradually reducing the space of the molding cavity from the inside to the outside, thereby being able to squeeze the space inside the molding cavity, and vulcanize each rubber raw material layer inside the molding cavity under the gradually increasing pressure from the inside to the outside, and being able to generate sufficient pressing force from the inside to the outside to ensure the vulcanization molding of the rubber. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 One of the three-dimensional structure diagrams of a vulcanization molding device of the present invention;

[0026] Figure 2 Another three-dimensional structure diagram of a vulcanization molding device of the present invention;

[0027] Figure 3 A sectional view of a vulcanization molding device of the present invention;

[0028] Figure 4 An assembly diagram of a vulcanization molding device of the present invention;

[0029] Figure 5 A partial structure diagram of the positioning mechanism and the lower molding mechanism of a vulcanization molding device of the present invention;

[0030] Figure 6 A three-dimensional structure diagram of the lower molding mechanism of a vulcanization molding device of the present invention;

[0031] Figure 7 One of the three-dimensional structure diagrams of the upper molding mechanism of a vulcanization molding device of the present invention;

[0032] Figure 8 This is the second schematic three-dimensional structure diagram of the upper forming mechanism of the present invention.

[0033] In the figure: 1. Fixed pedestal; 2. Operation terminal; 3. Positioning mechanism; 31. Positioning shaft; 32. Limit groove; 4. Bottom buffer mechanism; 41. Connecting pedestal; 42. Supporting pedestal; 43. Buffer spring; 5. Lower forming mechanism; 51. Lower positioning plate; 52. Lower forming housing; 53. Plug-in locking plate; 6. Top layer driving mechanism; 61. Central pressing cylinder; 62. Sub-pressing cylinder; 7. Upper forming mechanism; 71. Upper forming housing; 711. Forming chute; 72. Forming assembly; 721. Connecting slider; 722. Connecting chute; 8. Step-by-step pressing mechanism; 81. Pressing housing; 82. Driven pressing plate; 83. Elastic water bag. Specific embodiments

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] As introduced in the background art, there are deficiencies in the prior art. To solve the above technical problems, the present application proposes a vulcanization molding device and a sealing ring molding method.

[0036] Embodiment 1:

[0037] Please refer to Figures 1-8, a vulcanization molding device, comprising: 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 inside the positioning mechanism 3, a top driving mechanism 6 and an upper molding mechanism 7 are arranged at the top end inside the positioning mechanism 3; the upper molding mechanism 7 includes an upper molding housing 71 and a plurality of molding components 72, the plurality of molding components 72 are sequentially arranged from inside to outside inside the upper molding housing 71, a step-by-step pressing mechanism 8 is arranged at the top of the upper molding mechanism 7, and under the drive of the top driving mechanism 6, the step-by-step pressing mechanism 8 can drive the upper molding mechanism 7, and the upper molding mechanism 7 can approach the lower molding mechanism 5 side under the restriction of the positioning mechanism 3; when the upper molding mechanism 7 and the lower molding mechanism 5 are in contact, the lower molding mechanism 5 overcomes the buffering force provided by the bottom buffer 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 closed, 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 bottommost position, the step-by-step pressing mechanism 8 can drive each molding component 72 to move downward in sequence from inside to outside, gradually reduce the space of the molding cavity from inside to outside, squeeze the space inside the molding cavity, and vulcanize and mold the rubber inside the molding cavity under gradually increasing pressure from inside to outside.

[0038] This vulcanization molding equipment can be applied to the vulcanization of single rubber or multi-layer composite rubber. During specific use, first, the rubber raw materials to be vulcanized and molded (in the process of vulcanizing multi-layer composite rubber, the rubber raw material layers can be filled into the lower molding mechanism 5 one by one according to the actual layer sequence) are filled into the lower molding mechanism 5. Then, through the operation of the operation terminal 2 (the means for the operation terminal 2 to control the hydraulic cylinder of the top driving mechanism 6 to move is a common technical solution in the prior art, and the specific operation means of the operation terminal 2 is also a common technical solution in the prior art, which will not be elaborated here), the top driving mechanism 6 drives the upper molding mechanism 7 to approach the lower molding mechanism 5 side by side 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 (after mold closing), a closed molding cavity is formed between the upper molding mechanism 7 and the lower molding mechanism 5 (a pressure relief valve is connected to the molding cavity). Each rubber raw material layer is restricted inside the molding cavity, thus preventing the safety hazard caused by the rubber vulcanized and molded in the high-pressure environment inside the molding cavity from being extruded from 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. The step-by-step pressing mechanism 8 drives each molding component 72 to move downward in turn from the inside to the outside, gradually reducing the space of the molding cavity from the inside to the outside, squeezing the space inside the molding cavity, and vulcanizing each rubber raw material layer inside the molding cavity from the inside to the outside (in the horizontal direction) under gradually increasing pressure, so as to generate sufficient pressing force from the inside to the outside and be able to extrude bubbles and the like during vulcanization from the inside to the outside, avoiding the rupture of bubbles at the central position, effectively ensuring the molding of the rubber at the middle position, and molding some defective materials at the edge position, which is convenient for removing these defects and improving the performance of the produced rubber material.

[0039] Embodiment 2:

[0040] Please refer to Figures 1-8 , which is different from the above embodiment in that the lower molding mechanism 5 includes a lower positioning plate 51 and a lower molding housing 52, and the lower molding housing 52 is slidably connected to the lower positioning plate 51; the lower molding housing 52 can slide horizontally from the molding position directly above the lower positioning plate 51 to the discharging 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 housing 71 and the lower positioning plate 51 respectively.

[0041] A number of plug-in locking plates 53 are arranged on the outer side of the lower molding shell 52, and limit grooves 32 are opened at the bottom ends of the respective positioning shafts 31; both sides of each plug-in locking plate 53 are in contact with the inner walls on both sides of the limit groove 32. During the movement of each plug-in locking plate 53 from the discharging position of the lower molding shell 52 to the molding position, it can extend into the limit groove 32, and the length of the limit groove 32 is greater than the length of the plug-in locking plate 53 extending into the limit groove 32.

[0042] When the lower molding shell 52 is in 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 restricts the longitudinal movement of the lower molding shell 52 through each plug-in locking plate 53, and the lower molding shell 52 can only move up and down under the restriction of each positioning shaft 31.

[0043] During specific use, through the sliding connection between the lower molding shell 52 and the lower positioning plate 51, the position of the lower molding shell 52 can be switched between the molding position directly above the lower positioning plate 51 and the discharging position on one side of the lower positioning plate 51. When the lower molding shell 52 is in the discharging position, it is convenient to take out the vulcanized and molded rubber from the inside of the lower molding shell 52 and to place the raw materials to be vulcanized and molded into 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 in 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, and at the same time, being able to avoid the movement of the lower molding shell 52 in the longitudinal direction, and effectively ensuring the sealing of the molding cavity during the movement.

[0044] Embodiment Three:

[0045] Please refer to Figures 1-8 , which is different from the above embodiment in that each molding component 72 is slidably connected up and down with the adjacent molding component 72, and the outer side of the outermost molding component 72 is slidably connected with the upper molding shell 71; a number of connection sliders 721 are arranged on the outer side of each molding component 72, a number of connection chutes 722 are arranged on the inner side of each molding component 72, and each molding chute 711 is arranged at the inner top end of the upper molding shell 71; the connection sliders 721 of the inner molding components 72 are respectively embedded in the corresponding connection chutes 722 of the outer molding components 72, and the connection sliders 721 of the outermost molding component 72 are respectively embedded in the corresponding molding chutes 711.

[0046] The step-by-step pressing mechanism 8 includes a pressing housing 81 and a driven pressing plate 82. The pressing housing 81 is slidably connected to the driven pressing plate 82. There is a pressing cavity between the pressing housing 81 and the driven pressing plate 82, and an elastic water bag 83 is arranged inside the pressing cavity; the top end of the elastic water bag 83 is fixedly connected to the driven pressing plate 82, and the pressing housing 81 is fixedly connected to the upper forming housing 71; when the driven pressing plate 82 is at the top end of the pressing housing 81, the elastic water bag 83 only contacts the forming assembly 72 located in the center.

[0047] When the driven pressing plate 82 gradually moves towards the upper forming housing 71, the pressing cavity gradually shrinks, and the elastic water bag 83 gradually fits the shape of the pressing cavity, gradually shrinking in the vertical direction and expanding from the inside to the outside in the horizontal direction, and gradually contacting each forming assembly 72 from the inside to the outside. The main line from the inside to the outside drives each forming assembly 72 to move downward in sequence, gradually reducing the space of the forming cavity from the inside to the outside.

[0048] Therefore, during use, after the lower forming housing 52 and the upper forming housing 71 are closed, since there is still a tendency to move downward at this time, the elastic water bag 83 only contacts the forming assembly 72 located in the center. At this time, due to the action of the rubber inside the forming cavity, the bottom surfaces of each forming assembly 72 are all at the same horizontal plane. Then, when the forming cavity no longer moves downward, the elastic water bag 83 is pressed, and first conducts the pressure to the forming assembly 72 located in the center, driving the forming assembly 72 located in the center 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 as to be able to gradually shrink in the vertical direction and expand 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 being pressed and broken), so as to be able to gradually contact each forming assembly 72 from the inside to the outside. The main line from the inside to the outside drives each forming assembly 72 to move downward in sequence, gradually reducing the space of the forming cavity from the inside to the outside, so as to be able to squeeze the space inside the forming cavity, and the rubber raw material layers inside the forming cavity are vulcanized under the gradually increasing pressure from the inside to the outside (in the horizontal direction), 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.

[0049] The top 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 housing 81; the elongation degree of the telescopic end of the central pressing cylinder 61 is greater than the elongation degrees 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 forces provided by each auxiliary pressing cylinder 62.

[0050] The bottom buffer mechanism 4 includes a connecting pedestal 41 and a supporting pedestal 42. The top of the supporting pedestal 42 is fixed to the lower positioning plate 51. A number of buffer springs 43 are arranged between the connecting pedestal 41 and the supporting pedestal 42. Each buffer spring 43 can contract when the lower positioning plate 51 moves downward. A heater is arranged inside the lower forming shell 52, and heaters are arranged inside each forming component 72. The heating power of the heaters inside each forming component 72 can be independently adjusted.

[0051] During use, due to the arrangement of the central pressing cylinder 61 and a number of auxiliary pressing cylinders 62, the extension degree of the telescopic end of the central pressing cylinder 61 is greater than that of the telescopic ends of the auxiliary pressing cylinders 62, and the pressing force provided by the central pressing cylinder 61 is also greater than that provided by the auxiliary pressing cylinders 62, so that the driven pressing plate 82 can slide relative to the pressing shell 81. Thus, each forming component 72 can be driven to move downward in sequence from the inside to the outside of the elastic water bag 83, and each rubber raw material layer inside the forming cavity is vulcanized and formed under gradually increasing pressure from the inside to the outside. During specific use, since a heater is arranged inside the lower forming shell 52 and heaters are arranged inside each forming component 72, and the heating power of the heaters inside each forming component 72 can be independently adjusted, different heat outputs can be provided at different positions inside the forming cavity, and thus the vulcanization forming effect inside the forming cavity can be effectively coordinated.

[0052] Embodiment Four:

[0053] A method for forming a sealing ring uses a vulcanization forming device as described in any one of Embodiments One to Three to manufacture the sealing ring raw material, and includes the following steps:

[0054] One by one, the rubber raw material layers to be vulcanized and formed are filled into the lower forming mechanism 5;

[0055] Under the control of the operation terminal 2, the top driving mechanism 6 drives the upper forming mechanism 7 to approach the lower forming mechanism 5 side by side under the restriction of the positioning mechanism 3 through the step-by-step pressing mechanism 8;

[0056] After the upper forming mechanism 7 and the lower forming mechanism 5 are in contact, a closed forming cavity is formed between the upper forming mechanism 7 and the lower forming mechanism 5, and each rubber raw material layer is restricted inside the forming cavity;

[0057] The top driving mechanism 6 continues to drive the step-by-step pressing mechanism 8 to move downward. The step-by-step pressing mechanism 8 drives each forming component 72 to continue to move downward in sequence from the inside to the outside, gradually reducing the space of the forming cavity from the inside to the outside, squeezing the space inside the forming cavity, and vulcanizing and forming each rubber raw material layer inside the forming cavity from the inside to the outside to produce the sealing ring raw material.

[0058] Although embodiments of the present invention have been shown and described, those of ordinary skill in the art will appreciate that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. 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 bottommost position, the step-by-step pressing mechanism can sequentially drive each molding assembly to move downward from the inside to the outside, shrink 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; 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, each of which passes through the upper molding shell and the lower positioning plate respectively; 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 inner forming assembly is respectively embedded in each connecting chute located outside, and each connecting slider of the outermost forming assembly is respectively embedded in each corresponding forming chute; 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 of the pressing shell, the elastic water bag is in contact only with the molding component located in the center; 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.

2. A vulcanization molding equipment according to claim 1, 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.

3. A vulcanization molding equipment according to claim 2, 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.

4. A vulcanization molding equipment according to claim 1, 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.

5. A vulcanization molding equipment according to claim 1, 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.

6. A sealing ring forming method, characterized in that: The vulcanization molding equipment as described in any one of claims 1 to 5 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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