Rubber seal ring mold with skeleton

Abstract

The utility model relates to mould technical field, specifically is a kind of rubber sealing ring mould with framework, including lower mould and upper mould, recess and the cavity for forming sealing ring are provided between the lower mould and upper mould, recess is provided with middle layer board in, recess is provided with the glue leakage groove that is communicated with cavity in the side adjacent to cavity, the cross section of glue leakage groove is conical, its shallow narrow end near cavity, and gradually widen and deepen towards the direction away from cavity, the side corresponding to the outlet of glue leakage groove of middle layer board is provided with adjustable glue leakage component, for control the opening degree of glue leakage groove, lower mould, upper mould and middle layer board are all provided with snap spring groove, ensure that product forming is dense uniform, simultaneously reduce subsequent finishing workload to minimum, realize high product qualification rate and production efficiency.

Description

Technical Field

[0001] This utility model relates to the field of mold technology, and more specifically, to a mold for a rubber sealing ring with a skeleton. Background Technology

[0002] A skeletonized rubber sealing ring mold is a specialized tooling used to integrate a metal skeleton and rubber material into a composite sealing product through a compression molding process. Its core function is to vulcanize and mold the rubber within the mold cavity under high temperature and high pressure conditions, and firmly bond it with the pre-placed metal skeleton, thereby giving the sealing ring excellent elasticity, sealing performance, and mechanical strength. These molds typically employ upper and lower molds or parting surface structures. Skeletonized rubber sealing ring molds are widely used in automotive oil seals, bearing seals, hydraulic and pneumatic systems, and other fields, and are important process equipment for ensuring the sealing reliability and service life of industrial equipment.

[0003] For example, Chinese patent disclosure: A rubber sealing ring mold for easy demolding, application number: CN202320583731.8, includes a square plate and a cover plate. The square plate has a circular groove, and a circular block is installed on the cover plate. An annular plastic sheet is placed in the circular groove, and an annular plastic film is wrapped around the circular block. A cooling device is installed on the square plate. In this rubber sealing ring mold for easy demolding, the annular plastic sheet is laid at the bottom of the circular groove beforehand, and the annular plastic film is placed on the circular block. After the rubber sealing ring is formed, when the cover plate is removed, the inner ring of the formed rubber sealing ring is in contact with the annular plastic film, and the bottom is in contact with the annular plastic sheet, which facilitates the demolding of the formed rubber sealing ring from the mold. A water pump draws water from the water tank and fills the annular water pool through the water inlet pipe, which cools the raw material in the rubber sealing ring mold between the circular block and the circular groove, and forms it quickly. After cooling is completed, the valve is opened, and the water in the annular water pool flows back to the water tank through the return pipe for easy reuse.

[0004] However, in the above technical solutions, the production process of the skeleton rubber sealing ring requires vulcanization molding. During the vulcanization process, excess rubber is prone to form irregular adhesion (flash) on the surface of the metal skeleton, resulting in a high product defect rate. It requires manual repair that takes more than 30 seconds per piece, and the risk of damage during repair is high. Secondly, traditional molds lack an effective control mechanism for cavity pressure, making it difficult to adapt to different rubber properties, which can easily lead to insufficient product density or excessive flash, exacerbating the repair burden. Utility Model Content

[0005] The main purpose of this utility model is to provide a mold for a rubber sealing ring with a skeleton, which can effectively solve the problem in the background technology that the production process of rubber sealing rings with skeletons requires vulcanization molding. During the vulcanization process, excess rubber is prone to irregular adhesion (flash) on the surface of the metal skeleton, resulting in a high product defect rate. It requires manual repair that takes more than 30 seconds per piece and has a high risk of damage. Secondly, traditional molds lack an effective control mechanism for cavity pressure, making it difficult to adapt to different rubber properties, which can easily lead to insufficient product density or excessive flash, exacerbating the repair burden.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a rubber sealing ring mold with a skeleton, comprising a lower mold and an upper mold, wherein a groove and a cavity for forming the sealing ring are provided between the lower mold and the upper mold, a middle layer plate is provided in the groove, and a glue-draining groove communicating with the cavity is provided on the side of the groove adjacent to the cavity, the cross-section of the glue-draining groove is conical, its end near the cavity is shallower and narrower, and gradually widens and deepens towards the direction away from the cavity, an adjustable glue-draining component is provided on the side of the middle layer plate corresponding to the outlet of the glue-draining groove, for controlling the opening degree of the glue-draining groove, and retaining spring grooves are provided on the lower mold, the upper mold and the middle layer plate.

[0007] Preferably, the groove surrounds the cavity.

[0008] Preferably, the adhesive release assembly includes an assembly base, on which a feed trough is provided, and a discharge trough is provided on one side of the feed trough. A sliding groove is provided on the inner wall of one side of the discharge trough, and a stop block is slidably disposed in the sliding groove.

[0009] Preferably, a threaded post is threaded on one side of the component base, a knob is fixedly provided at one end of the threaded post, and a scale is provided on the outer wall surface of one side of the component base.

[0010] Preferably, the feed trough is connected to the glue discharge trough.

[0011] Preferably, the end of the threaded post away from the knob is rotatably connected to the stop.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] (1) By adding a tapered cross-section rubber discharge groove connected to the cavity, the excess rubber during the vulcanization process is guided to the outside of the skeleton area in an orderly manner, which fundamentally avoids the defect of slough on the skeleton surface. Combined with the rubber discharge component that can precisely adjust the opening size, the active control of the vulcanization pressure in the cavity is realized, which effectively improves the product molding density and consistency. While ensuring product quality, it greatly reduces the amount of subsequent finishing work, and finally achieves a high product qualification rate and production efficiency. Attached Figure Description

[0014] Figure 1 This is a structural schematic diagram of a rubber sealing ring mold with a skeleton according to the present invention;

[0015] Figure 2 This is a schematic diagram of the internal structure of a rubber sealing ring mold with a skeleton according to the present invention;

[0016] Figure 3 This is a schematic diagram of the adhesive release component in a rubber sealing ring mold with a skeleton according to the present invention;

[0017] Figure 4 This is a schematic diagram of the internal structure of the rubber discharge component in a rubber sealing ring mold with a skeleton according to this utility model.

[0018] In the diagram: 1. Lower mold; 2. Upper mold; 3. Cavity; 4. Groove; 5. Middle layer plate; 6. Glue drain groove; 7. Glue drain assembly; 701. Assembly base; 702. Feed groove; 703. Discharge groove; 704. Slide groove; 705. Stop block; 706. Threaded post; 707. Knob; 708. Scale; 8. Snap ring groove. Detailed Implementation

[0019] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0020] like Figure 1 and Figure 2 As shown, a rubber sealing ring mold with a skeleton includes a lower mold 1 and an upper mold 2. A groove 4 and a cavity 3 for forming the sealing ring are provided between the lower mold 1 and the upper mold 2. A middle layer plate 5 is provided in the groove 4. A glue discharge groove 6 communicating with the cavity 3 is provided on the side of the groove 4 adjacent to the cavity 3. The cross-section of the glue discharge groove 6 is conical, and its end near the cavity 3 is shallower and narrower, gradually becoming wider and deeper in the direction away from the cavity 3. An adjustable glue discharge component 7 is provided on the side of the middle layer plate 5 corresponding to the outlet of the glue discharge groove 6 to control the opening degree of the glue discharge groove 6. A retaining spring groove 8 is provided on the lower mold 1, the upper mold 2 and the middle layer plate 5.

[0021] like Figure 3 and Figure 4As shown, in another embodiment of the present invention, the glue-releasing assembly 7 includes an assembly base 701, an inlet groove 702 is provided on the assembly base 701, an outlet groove 703 is provided on one side of the inlet groove 702, a sliding groove 704 is provided on the inner wall of one side of the outlet groove 703, and a stop block 705 is slidably provided in the sliding groove 704.

[0022] A threaded post 706 is threaded on one side of the component base 701, a knob 707 is fixedly provided on one end of the threaded post 706, and a scale 708 is provided on the outer wall surface of one side of the component base 701.

[0023] Rotating the knob 707 causes the threaded post 706, which is fixed to it, to rotate. Since the threaded post 706 and the component base 701 are threadedly engaged, the rotational motion is converted into the linear forward and backward movement of the threaded post 706, thereby pushing the stop 705, which is rotatably connected to it, to slide within the groove 704. By observing the position of the edge of the stop 705 relative to the scale 708, the size of the opening formed between the stop 705 and the side wall of the discharge groove 703 can be precisely adjusted. The size of this opening directly determines the effective cross-sectional area of ​​the glue discharge channel, thereby achieving precise control of the vulcanization pressure inside the cavity 3.

[0024] The working principle of this type of rubber sealing ring mold with skeleton:

[0025] During use, when the mold is closed, the upper mold 2 and the lower mold 1 press together to fix the middle layer plate 5. After the metal skeleton is precisely placed in the cavity 3, rubber is injected for vulcanization. The core improvement lies in the addition of a rubber drain groove 6 connected to the cavity 3. During the vulcanization process, excess rubber is actively guided to a predetermined channel outside the skeleton area, thus fundamentally avoiding irregular adhesion of rubber to the skeleton surface, i.e., sludge. Specifically, under pressure, excess rubber first flows into the rubber drain groove 6, which has a conical cross-section that is shallow and narrow near the cavity end and gradually widens and deepens outward. This structure can flatten the surface of the skeleton. The adhesive flow is gently guided, reducing turbulence and air bubbles. The adhesive then enters the feed trough 702 of the adhesive discharge assembly 7. By rotating the knob 707 with a scale 708, the threaded column 706 is driven, pushing the stop 705 to slide in the slide groove 704. This precisely adjusts the size of the opening formed by the stop 705 and the discharge trough 703, thereby precisely controlling the vulcanization pressure in the cavity 3. This coordinated control of the overflow path and pressure ensures that the product molding is dense and uniform, while minimizing the amount of subsequent finishing work, ultimately achieving a high product qualification rate and production efficiency.

[0026] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. For those skilled in the art, other variations or modifications can be made based on the above description. It is impossible to exhaustively list all the implementation methods here. All obvious variations or modifications derived from the technical solutions of the present invention are still within the protection scope of the present invention.

Claims

1. A rubber sealing ring mold with a skeleton, comprising a lower mold (1) and an upper mold (2), characterized in that: A groove (4) and a cavity (3) for forming a sealing ring are provided between the lower mold (1) and the upper mold (2). A middle plate (5) is provided in the groove (4). A glue-releasing groove (6) communicating with the cavity (3) is provided on the side of the groove (4) adjacent to the cavity (3). The cross-section of the glue-releasing groove (6) is conical. Its end near the cavity (3) is shallower and narrower, and it gradually becomes wider and deeper in the direction away from the cavity (3). An adjustable glue-releasing component (7) is provided on the side of the middle plate (5) corresponding to the outlet of the glue-releasing groove (6) to control the opening degree of the glue-releasing groove (6). A retaining ring groove (8) is provided on the lower mold (1), the upper mold (2) and the middle plate (5).

2. The rubber sealing ring mold with skeleton according to claim 1, characterized in that: The groove (4) surrounds the cavity (3).

3. A rubber sealing ring mold with a skeleton according to claim 2, characterized in that: The adhesive release assembly (7) includes an assembly base (701), an inlet groove (702) is provided on the assembly base (701), an outlet groove (703) is provided on one side of the inlet groove (702), a sliding groove (704) is provided on the inner wall of one side of the outlet groove (703), and a stop block (705) is slidably provided in the sliding groove (704).

4. A rubber sealing ring mold with a skeleton according to claim 3, characterized in that: The component base (701) has a threaded post (706) on one side, a knob (707) is fixedly provided at one end of the threaded post (706), and a scale (708) is provided on the outer wall surface of one side of the component base (701).

5. A rubber sealing ring mold with a skeleton according to claim 4, characterized in that: The feed trough (702) is connected to the glue discharge trough (6).

6. A rubber sealing ring mold with a skeleton according to claim 5, characterized in that: The threaded post (706) is rotatably connected to the stop block (705) on the side away from the knob (707).

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