Composite gasket mold

Abstract

The utility model discloses a kind of composite gasket mould, and a plurality of installation sites are respectively opened on upper die plate, middle die plate and lower die plate in correspondence;Each installation site is equipped with the independently detachable mold core unit, and the mold core unit includes mutually matched upper mold core piece, middle mold core piece and lower mold core piece, and upper mold core piece, middle mold core piece and lower mold core piece jointly form the mold cavity for forming composite gasket, annular step for placing and positioning metal framework is arranged on the inner cavity wall of middle mold core piece, and the upper surface of annular step is flush with the upper surface of middle die plate or slightly higher than the upper surface of middle die plate. In this way, the mold core adopts insert type structure, and spare mold can be quickly replaced, full-hole production is maintained in time, the risk of mold being pressed and damaged due to improper placement of framework is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and in particular to a composite gasket mold. Background Technology

[0002] Composite gaskets are integrally vulcanized and bonded rubber rings and metal rings. They are sealing rings used to seal threaded and flanged connections. They consist of a metal skeleton and a rubber sealing gasket and are widely used for static sealing of the end faces of welding, ferrules, flared pipe fittings, bolts, and mechanical pressure systems. They are most widely used in bolt plugs. They seal the bolt and cylinder body through the upper and lower lips respectively to ensure that the sealing medium does not leak.

[0003] Traditional composite gasket molds are whole-plate milling structures, including upper template, middle template and lower template. Multiple cavities are directly opened on the upper template, middle template and lower template. The metal skeleton is positioned in the middle template. Although it has advantages such as good overall flatness, stable product sealing, high material feeding efficiency, easy removal of material cup flash and many mold cavities, it has the following disadvantages: (1) The positioning of the skeleton in the middle mold is affected by the cooperation of the middle and upper molds. It is difficult for workers to see whether the skeleton is installed in place, which can easily lead to mold damage; (2) Due to whole-plate processing, individual cavities cannot be replaced in time when damaged, and full-cavity production cannot be maintained, which seriously affects production efficiency. Utility Model Content

[0004] To address the technical problems existing in the background art, this utility model proposes a composite gasket mold.

[0005] This utility model proposes a composite gasket mold, comprising a plug plate, an upper template, a middle template, and a lower template arranged sequentially from top to bottom. Each of the upper, middle, and lower templates has a plurality of mounting positions. Each mounting position contains an independently detachable and replaceable mold core unit. The mold core unit includes an upper mold core component, a middle mold core component, and a lower mold core component that cooperate with each other. The upper, middle, and lower mold core components together form a mold cavity for molding the composite gasket. The inner wall of the middle mold core component has an annular step for placing and positioning a metal skeleton. The upper surface of the annular step is flush with or slightly higher than the upper surface of the middle template.

[0006] Preferably, the upper mold core and the middle mold core are respectively fixed to the upper template and the middle template by spiral snap rings, and the lower mold core is fixed to the lower template by bolts.

[0007] Preferably, the outer peripheral walls of the upper mold core and the middle mold core are provided with annular grooves for accommodating the spiral retaining spring, and the inner walls of the mounting holes of the upper template and the middle template are provided with limiting grooves that cooperate with the spiral retaining spring.

[0008] Preferably, the upper template, middle template, and lower template are all made of 45 steel, and the upper mold core, middle mold core, and lower mold core are made of mold steel SM1 material with a tempered hardness of HRC44-48.

[0009] Preferably, the lower surface of the injection plate is provided with an integral material cup, and the lower end of the material cup is provided with a conical guide nozzle that communicates with the injection port of the upper mold core.

[0010] Preferably, the lower surface of the injection plate is provided with an integral material cup, and the lower end of the material cup is provided with a conical guide nozzle that communicates with the injection port of the upper mold core.

[0011] Preferably, the lower mold plate is provided with an ejection mechanism, which includes an ejector rod and an ejector plate, with the upper end of the ejector rod corresponding to the bottom of the lower mold core.

[0012] In summary, this utility model has the following beneficial effects: the mold core adopts an insert structure, and each mold core unit is detachably connected to the upper mold plate, middle mold plate, and lower mold plate. When individual cavities are damaged, a spare mold can be quickly replaced, which can maintain full-cavity production in a timely manner and avoid the entire mold from being shut down due to damage to individual cavities, thus greatly improving production efficiency; the upper surface of the annular step is flush with or slightly higher than the upper surface of the middle mold plate. When placing the skeleton, workers can directly judge whether it is placed flat and in place by touch or visual inspection, which greatly reduces the risk of damaging the mold due to improper placement of the skeleton.

[0013] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the composite gasket mold according to an embodiment of the present invention.

[0015] In the picture:

[0016] 1. Upper mold template; 2. Middle mold template; 3. Lower mold template; 4. Upper mold core; 5. Middle mold core; 6. Lower mold core; 7. Helical snap ring; 8. Bolt. Detailed Implementation

[0017] The embodiments of this utility model are described in detail below. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar symbols denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0018] like Figure 1As shown, the composite gasket mold proposed in this embodiment includes a plug plate, an upper template 1, a middle template 2, and a lower template 3 arranged sequentially from top to bottom. The upper template 1, the middle template 2, and the lower template 3 are respectively provided with multiple mounting positions. Each mounting position is provided with a mold core unit that can be independently disassembled and replaced. The mold core unit includes an upper mold core 4, a middle mold core 5, and a lower mold core 6 that cooperate with each other. The upper mold core 4, the middle mold core 5, and the lower mold core 6 together form a mold cavity for forming a composite gasket. The inner wall of the middle mold core 5 is provided with an annular step for placing and positioning a metal skeleton. The upper surface of the annular step is flush with or slightly higher than the upper surface of the middle template 2.

[0019] The upper mold plate 1, middle mold plate 2, and lower mold plate 3 are all made of 45 steel. The upper mold core 4, middle mold core 5, and lower mold core 6 are made of mold steel SM1 with a tempered hardness of HRC44-48. The high hardness provides good wear resistance and impact resistance, reducing the frequency of the skeleton crushing the cavity and significantly extending the service life of the mold.

[0020] In this way, the mold core adopts an insert structure, and each mold core unit is detachably connected to the upper mold plate 1, the middle mold plate 2 and the lower mold plate 3. When individual cavities are damaged, spare molds can be quickly replaced, which can maintain full cavity production in time and avoid the entire mold from stopping production due to damage to individual cavities, thus greatly improving production efficiency. The upper surface of the annular step is flush with or slightly higher than the upper surface of the middle mold plate 2. When placing the skeleton, workers can directly judge whether it is placed flat and in place by touch or visual inspection, which greatly reduces the risk of damaging the mold due to improper placement of the skeleton.

[0021] Furthermore, the upper mold core 4 and the middle mold core 5 are both fixed to the upper template 1 and the middle template 2 respectively by spiral retaining springs 7, and the lower mold core 6 is fixed to the lower template 3 by bolts 8. Specifically, the upper mold core 4 is installed in the mounting groove at the lower end of the upper template 1 by spiral retaining springs 7, the middle mold core 5 is installed in the mounting hole of the middle template 2 by spiral retaining springs 7, and the lower mold core 6 is installed in the mounting groove at the upper end of the lower template 3 by bolts 8. The spiral retaining springs 7 have good elasticity and clamping force, which can ensure the mold core is installed firmly, while facilitating the disassembly and replacement of the mold core.

[0022] Furthermore, the outer peripheral walls of the upper mold core 4 and the middle mold core 5 are provided with annular grooves for accommodating the spiral retaining spring 7, and the inner walls of the mounting holes of the upper template 1 and the middle template 2 are provided with limiting grooves that cooperate with the spiral retaining spring 7.

[0023] In this embodiment, the lower surface of the injection plate is provided with an integrated material cup (not shown in the figure), and the lower end of the material cup is provided with a conical guide nozzle that communicates with the injection port of the upper mold core 4. The conical guide nozzle optimizes the flow of the material, reduces injection resistance, and helps to improve product quality.

[0024] The lower mold core 6 has an venting groove (not shown in the figure) on its top surface. This prevents defects such as material shortage and air bubbles, ensuring the quality of the rubber products.

[0025] Preferably, the lower mold plate 3 is provided with an ejection mechanism (not shown in the figure), which includes an ejector rod and an ejector plate, with the upper end of the ejector rod corresponding to the bottom of the lower mold core 6. This achieves automated ejection, reduces manual intervention, and improves production efficiency.

[0026] It should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0028] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0029] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0030] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A composite gasket mold, comprising a plug plate, an upper template, a middle template, and a lower template arranged sequentially from top to bottom, characterized in that, The upper, middle, and lower templates are each provided with multiple mounting positions. Each mounting position contains a mold core unit that can be independently disassembled and replaced. The mold core unit includes an upper mold core, a middle mold core, and a lower mold core that cooperate with each other. The upper mold core, the middle mold core, and the lower mold core together form a mold cavity for molding composite gaskets. The inner wall of the middle mold core is provided with an annular step for placing and positioning the metal skeleton. The upper surface of the annular step is flush with or slightly higher than the upper surface of the middle template.

2. The composite gasket mold according to claim 1, characterized in that, The upper mold core and the middle mold core are respectively fixed to the upper template and the middle template by spiral snap rings, and the lower mold core is fixed to the lower template by bolts.

3. The composite gasket mold according to claim 2, characterized in that, The outer peripheral walls of the upper mold core and the middle mold core are provided with annular grooves for accommodating the spiral retaining spring, and the inner walls of the mounting holes of the upper template and the middle template are provided with limiting grooves that cooperate with the spiral retaining spring.

4. The composite gasket mold according to claim 2, characterized in that, The upper template, middle template, and lower template are all made of 45 steel, and the upper mold core, middle mold core, and lower mold core are made of mold steel SM1 material with a tempered hardness of HRC44-48.

5. The composite gasket mold according to claim 1, characterized in that, The lower surface of the injection plate is provided with an integrated material cup, and the lower end of the material cup is provided with a conical guide nozzle that communicates with the injection port of the upper mold core.

6. The composite gasket mold according to claim 5, characterized in that, The top surface of the lower mold core is provided with an venting groove.

7. The composite gasket mold according to claim 6, characterized in that, The lower mold plate is provided with an ejection mechanism, which includes an ejector rod and an ejector plate. The upper end of the ejector rod corresponds to the bottom of the lower mold core.

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